net: improve support for SCTP checksums
Subsystems (10)
cover net: improve support for SCTP checksums
When NETIF_F_CSUM_MASK bits are all 0 on netdev features, validate_xmit_skb uses skb_checksum_help to compute 16-bit, 2-complement checksum on non-GSO skbs having ip_summed equal to CHECKSUM_PARTIAL.
This results in a systematic corruption of SCTP packets, since they need to be checksummed with crc32c. Moreover, this is done regardless the value of NETIF_F_SCTP_CRC, so any chance to offload crc32c computation on the NIC is lost. Finally, even when at least one bit in NETIF_F_CSUM_MASK is set on netdev features, validate_xmit_skb skips checksum computation - but then most NIC drivers can only call skb_checksum_help if their HW can't offload the checksum computation. Depending on the driver code, this results in wrong handling of SCTP, leading to:
- packet being dropped
- packet being transmitted with identically-zero checksum
- packet being transmitted with 2-complement checksum instead of crc32c
This series tries to address the above issue, by providing:
- the possibility to compute crc32c on skbs in Linux net core [patch 1]
- skb_sctp_csum_help, a function sharing common code with the original skb_checksum_help, that performs SW checksumming for skbs using crc32c [patch 2 and patch 3]
- skb_csum_hwoffload_help, called by validate xmit skb to perform SW checksumming using the correct algorithm based on the value of IP protocol number and netdev features bitmask [patch 4]
- an update to Linux documentation [patch 5]
Davide Caratti (5):
skbuff: add stub to help computing crc32c on SCTP packets
net: split skb_checksum_help
net: introduce skb_sctp_csum_help
net: more accurate checksumming in validate_xmit_skb
Documentation: add description of skb_sctp_csum_help
Documentation/networking/checksum-offloads.txt | 9 +- include/linux/netdevice.h | 1 + include/linux/skbuff.h | 5 +- net/core/dev.c | 132 +++++++++++++++++++++---- net/core/skbuff.c | 20 ++++ net/sctp/offload.c | 7 ++ 6 files changed, 151 insertions(+), 23 deletions(-)
Signature · 1 line
2.7.4
RFC PATCH 1/5 skbuff: add stub to help computing crc32c on SCTP packets
sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so it can't be used in net core. Like it has been done previously with other symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops to allow computation of SCTP checksum in net core after sctp.ko (and thus libcrc32c) has been loaded.
--- include/linux/skbuff.h | 2 ++ net/core/skbuff.c | 20 ++++++++++++++++++++ net/sctp/offload.c | 7 +++++++ 3 files changed, 29 insertions(+)
include/linux/skbuff.h +2 -0
@@ -3119,6 +3119,8 @@ struct skb_checksum_ops {__wsum (*combine)(__wsum csum,__wsum csum2,int offset,int len); }; +extern const struct skb_checksum_ops *sctp_csum_stub__read_mostly ; +__wsum __skb_checksum (const struct sk_buff *skb,int offset,int len,__wsum csum,const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
net/core/skbuff.c +19 -0
@@ -2235,6 +2235,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, }EXPORT_SYMBOL (skb_copy_and_csum_bits); +static __wsum warn_sctp_csum_update (const void *buff,int len,__wsum sum) +{ +net_warn_ratelimited ("attempt to compute crc32c without sctp.ko\n" ); +return 0 ; +} + +static __wsum warn_sctp_csum_combine (__wsum csum,__wsum csum2, +int offset,int len) +{ +net_warn_ratelimited ("attempt to compute crc32c without sctp.ko\n" ); +return 0 ; +} + +const struct skb_checksum_ops *sctp_csum_stub __read_mostly + &(struct skb_checksum_ops) { + .update = warn_sctp_csum_update, + .combine = warn_sctp_csum_combine, +}; +EXPORT_SYMBOL (sctp_csum_stub); +/** * skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy() * @from: source buffer
net/sctp/offload.c +6 -0
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = { }, }; +static const struct skb_checksum_ops *sctp_csum_ops __read_mostly + &(struct skb_checksum_ops) { + .update = sctp_csum_update, + .combine = sctp_csum_combine, +}; +int __init sctp_offload_init (void ) {int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)if (ret) goto ipv4; + sctp_csum_stub = sctp_csum_ops;return ret; ipv4:
Signature · 1 line
2.7.4
RFC PATCH 2/5 net: split skb_checksum_help
In reply to Davide Carattiskb_checksum_help is designed to compute the Internet Checksum only. To avoid duplicating code when other checksumming algorithms (e.g. crc32c) are used, separate common part from RFC1624-specific part.
--- net/core/dev.c | 51 +++++++++++++++++++++++++++++++++++---------------- 1 file changed, 35 insertions(+), 16 deletions(-)
net/core/dev.c +35 -16
@@ -2532,13 +2532,36 @@ static void skb_warn_bad_offload(const struct sk_buff *skb) skb_shinfo(skb)->gso_type, skb->ip_summed); } -/* -* Invalidate hardware checksum when packet is to be mangled, and +/* compute 16-bit RFC1624 checksum and store it at skb->data + offset */ +static int skb_rfc1624_csum (struct sk_buff *skb,int offset) +{ +__wsum csum; +int ret =0 ; + + csum =skb_checksum (skb, offset, skb->len - offset,0 ); + + offset += skb->csum_offset; +BUG_ON (offset +sizeof (__sum16) >skb_headlen (skb)); + +if (skb_cloned (skb) && + !skb_clone_writable (skb, offset +sizeof (__sum16))) { + ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); +if (ret) + goto out; + } + *(__sum16 *)(skb->data + offset) =csum_fold (csum) ?:CSUM_MANGLED_0 ; +out: +return ret; +} + +/* Invalidate hardware checksum when packet is to be mangled, and * complete checksum manually on outgoing path. +* @skb - buffer that needs checksum +* @csum_algo(skb, offset) - function used to compute the checksum */ -int skb_checksum_help (struct sk_buff *skb) +static int __skb_checksum_help (struct sk_buff *skb, +int (*csum_algo)(struct sk_buff *,int )) { -__wsum csum;int ret =0 , offset;if (skb->ip_summed =CHECKSUM_COMPLETE )
@@ -2560,24 +2583,20 @@ int skb_checksum_help(struct sk_buff *skb) offset =skb_checksum_start_offset (skb);BUG_ON (offset >=skb_headlen (skb)); - csum =skb_checksum (skb, offset, skb->len - offset,0 ); - - offset += skb->csum_offset; -BUG_ON (offset +sizeof (__sum16) >skb_headlen (skb)); - -if (skb_cloned (skb) && - !skb_clone_writable (skb, offset +sizeof (__sum16))) { - ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); -if (ret) - goto out; - } - *(__sum16 *)(skb->data + offset) =csum_fold (csum) ?:CSUM_MANGLED_0 ; + ret =csum_algo (skb, offset); +if (ret) + goto out; out_set_summed: skb->ip_summed =CHECKSUM_NONE ; out:return ret; } + +int skb_checksum_help (struct sk_buff *skb) +{ +return __skb_checksum_help (skb, skb_rfc1624_csum); +}EXPORT_SYMBOL (skb_checksum_help);__be16 skb_network_protocol (struct sk_buff *skb,int *depth)
Signature · 1 line
2.7.4
Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help
Quoted 45 lines · Davide Caratti
skb_checksum_helpis designed to compute the Internet Checksum only. To avoid duplicating code when other checksumming algorithms (e.g. crc32c) are used, separate common part from RFC1624-specific part.Reviewed-by Marcelo Ricardo Leitner <[email protected]>Signed-off-by Davide Caratti <[email protected]>--- net/core/dev.c | 51 +++++++++++++++++++++++++++++++++++---------------- 1 file changed, 35 insertions(+), 16 deletions(-)net/core/dev.c +24
-2@@ -2532,13 +2532,36 @@ static void skb_warn_bad_offload(const struct sk_buff *skb) skb_shinfo(skb)->gso_type, skb->ip_summed); } -/* -* Invalidate hardware checksum when packet is to be mangled, and +/* compute 16-bit RFC1624 checksum and store it at skb->data + offset */ +static int skb_rfc1624_csum (struct sk_buff *skb,int offset) +{ +__wsum csum; +int ret =0 ; + + csum =skb_checksum (skb, offset, skb->len - offset,0 ); + + offset += skb->csum_offset; +BUG_ON (offset +sizeof (__sum16) >skb_headlen (skb)); + +if (skb_cloned (skb) && + !skb_clone_writable (skb, offset +sizeof (__sum16))) { + ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); +if (ret) + goto out; + } + *(__sum16 *)(skb->data + offset) =csum_fold (csum) ?:CSUM_MANGLED_0 ; +out: +return ret; +} + +/* Invalidate hardware checksum when packet is to be mangled, and * complete checksum manually on outgoing path. +* @skb - buffer that needs checksum
net/core/dev.c static void skb_warn_bad_offload(const struct sk_buff *skb) · line 2567
Quoted 10 lines
net/core/dev.c +3
-2+* @csum_algo(skb, offset) - function used to compute the checksum */ -int skb_checksum_help (struct sk_buff *skb) +static int __skb_checksum_help (struct sk_buff *skb, +int (*csum_algo)(struct sk_buff *,int )) { -__wsum csum;int ret =0 , offset;if (skb->ip_summed =CHECKSUM_COMPLETE )
skb_checksum_help is specific to the Internet checksum. For instance, CHECKSUM_COMPLETE can _only_ refer to Internet checksum calculation nothing else will work. Checksums and CRCs are very different things with very different processing. They are not interchangeable, have very different properties, and hence it is a mistake to try to shoe horn things so that they use a common infrastructure.
It might make sense to create some CRC helper functions, but last time I checked there are so few users of CRC in skbufs I'm not even sure that would make sense.
Tom
Quoted 36 lines
net/core/dev.c +8
-13@@ -2560,24 +2583,20 @@ int skb_checksum_help(struct sk_buff *skb) offset =skb_checksum_start_offset (skb);BUG_ON (offset >=skb_headlen (skb)); - csum =skb_checksum (skb, offset, skb->len - offset,0 ); - - offset += skb->csum_offset; -BUG_ON (offset +sizeof (__sum16) >skb_headlen (skb)); - -if (skb_cloned (skb) && - !skb_clone_writable (skb, offset +sizeof (__sum16))) { - ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); -if (ret) - goto out; - } - *(__sum16 *)(skb->data + offset) =csum_fold (csum) ?:CSUM_MANGLED_0 ; + ret =csum_algo (skb, offset); +if (ret) + goto out; out_set_summed: skb->ip_summed =CHECKSUM_NONE ; out:return ret; } + +int skb_checksum_help (struct sk_buff *skb) +{ +return __skb_checksum_help (skb, skb_rfc1624_csum); +}EXPORT_SYMBOL (skb_checksum_help);__be16 skb_network_protocol (struct sk_buff *skb,int *depth) --2.7.4
RE: [RFC PATCH net-next 2/5] net: split skb_checksum_help
RnJvbTogVG9tIEhlcmJlcnQNCj4gU2VudDogMjMgSmFudWFyeSAyMDE3IDIxOjAwDQouLg0KPiBz a2JfY2hlY2tzdW1faGVscCBpcyBzcGVjaWZpYyB0byB0aGUgSW50ZXJuZXQgY2hlY2tzdW0uIEZv ciBpbnN0YW5jZSwNCj4gQ0hFQ0tTVU1fQ09NUExFVEUgY2FuIF9vbmx5XyByZWZlciB0byBJbnRl cm5ldCBjaGVja3N1bSBjYWxjdWxhdGlvbg0KPiBub3RoaW5nIGVsc2Ugd2lsbCB3b3JrLiBDaGVj a3N1bXMgYW5kIENSQ3MgYXJlIHZlcnkgZGlmZmVyZW50IHRoaW5ncw0KPiB3aXRoIHZlcnkgZGlm ZmVyZW50IHByb2Nlc3NpbmcuIFRoZXkgYXJlIG5vdCBpbnRlcmNoYW5nZWFibGUsIGhhdmUNCj4g dmVyeSBkaWZmZXJlbnQgcHJvcGVydGllcywgYW5kIGhlbmNlIGl0IGlzIGEgbWlzdGFrZSB0byB0 cnkgdG8gc2hvZQ0KPiBob3JuIHRoaW5ncyBzbyB0aGF0IHRoZXkgdXNlIGEgY29tbW9uIGluZnJh c3RydWN0dXJlLg0KPiANCj4gSXQgbWlnaHQgbWFrZSBzZW5zZSB0byBjcmVhdGUgc29tZSBDUkMg aGVscGVyIGZ1bmN0aW9ucywgYnV0IGxhc3QgdGltZQ0KPiBJIGNoZWNrZWQgdGhlcmUgYXJlIHNv IGZldyB1c2VycyBvZiBDUkMgaW4gc2tidWZzIEknbSBub3QgZXZlbiBzdXJlDQo+IHRoYXQgd291 bGQgbWFrZSBzZW5zZS4NCg0KSSBjYW4gaW1hZ2luZSBob3JyaWQgdGhpbmdzIGhhcHBlbmluZyBp ZiBzb21lb25lIHRyaWVzIHRvIGVuY2Fwc3VsYXRlDQpTQ1RQL0lQIGluIFVEUCAob3Igd29yc2Ug VURQL0lQIGluIFNDVFApLg0KDQpGb3IgVURQIGluIFVEUCBJIHN1c3BlY3QgdGhhdCBDSEVDS1NV TV9DT01QTEVURSBvbiBhbiBpbm5lciBVRFAgcGFja2V0DQphbGxvd3MgdGhlIG91dGVyIGNoZWNr c3VtIGJlIGNhbGN1bGF0ZWQgYnkgaWdub3JpbmcgdGhlIGlubmVyIHBhY2tldA0KKHNpbmNlIGl0 IHN1bXMgdG8gemVybykuDQpUaGlzIGp1c3QgaXNuJ3QgdHJ1ZSBpZiBTQ1RQIGlzIGludm9sdmVk Lg0KVGhlcmUgYXJlIHRyaWNrcyB0byBnZW5lcmF0ZSBhIGNyYyBvZiBhIGxvbmdlciBwYWNrZXQs IGJ1dCB0aGV5J2Qgb25seQ0Kd29yayBmb3IgU0NUUCBpbiBTQ1RQLg0KDQpGb3Igbm9uLWVuY2Fw c3VsYXRlZCBwYWNrZXRzIGl0IGlzIGEgZGlmZmVyZW50IG1hdHRlci4NCg0KCURhdmlkDQoNCg=
Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help
hello Tom and David,
thank you for the attention.
Quoted 12 lines
From: Tom Herbert
Quoted 2 lines
Sent: 23 January 2017 21:00
..
Quoted 8 lines
skb_checksum_helpis specific to the Internet checksum. For instance,CHECKSUM_COMPLETEcan _only_ refer to Internet checksum calculation nothing else will work. Checksums and CRCs are very different things with very different processing. They are not interchangeable, have very different properties, and hence it is a mistake to try to shoe horn things so that they use a common infrastructure.
true, we don't need to test CHECKSUM_COMPLETE on skbs carrying SCTP. So maybe we can simply replace patches 2/5 and 3/5 with the smaller one at the bottom of this message.
Quoted 3 lines
Quoted 3 lines
It might make sense to create some CRC helper functions, but last time I checked there are so few users of CRC in skbufs I'm not even sure that would make sense.
This is exactly the cause of issues I see with SCTP. These packets can be wrongly checksummed using skb_checksum_help, or simply not checksummed at all; and in both cases, the packet goes out from the NIC with wrong L4 checksum.
For example: there are scenarios, even the trivial one below, where skb carrying SCTP packets are wrongly checksummed, because the originating socket read NETIF_F_SCTP_CRC bit in the underlying device features. Then, after the kernel forwards the skb, the final transmission happens on another device where CRC offload is not available: this typically leads to bad checksums on transmitted SCTP packets.
namespace 1 | namespace 2
| | br0 | +------- Linux bridge -------+ | | | | V V
vethA <-----------> vethB eth0 |
|
when a socket bound to vethA in namespace 1 generates an INIT packet, it's not checksummed since veth devices have NETIF_F_SCTP_CRC set [1]. Then, after vethB receives the packet in namespace 2, linux bridge forwards it to eth0, and (depending on eth0 driver code), it will be transmitted with wrong CRC32c or simply dropped.
Quoted 4 lines · David Laight
I can imagine horrid things happening if someone tries to encapsulate SCTP/IP in UDP (or worse UDP/IP in SCTP).
Quoted 8 lines
For UDP in UDP I suspect that
CHECKSUM_COMPLETEon an inner UDP packet allows the outer checksum be calculated by ignoring the inner packet (since it sums to zero).
This just isn't true if SCTP is involved.
There are tricks to generate a crc of a longer packet, but they'd only work for SCTP in SCTP.For non-encapsulated packets it is a different matter.
If we limit the scope to skbs having ip_summed equal to CHECKSUM_PARTIAL, like it's done in patch 4, we only need checksumming the packet starting from csum_start to its end, and copy the computed value to csum_offset. The difficult thing is discriminating skbs that need CRC32c, namely SCTP, from the rest of the traffic (that will likely be checksummed by skb_checksum_help).
Currently, the only way to fix wrong CRCs in the scenario above is to configure tc filter with "csum" action on eth0 egress, to compensate the missing capability of eth0 driver to deal with SCTP packets having ip_summed equal to CHECKSUM_PARTIAL [2].
Patch 4 in the series is an attempt to solve the issue, both for encapsulated and non-encapsulated skbs, calling skb_csum_hwoffload_help() inside validate_xmit_skb. In order to look for unchecksummed SCTP packets, I took inspiration from a Linux-4.4 commit (6ae23ad36253 "net: Add driver helper functions ...) to implement skb_csum_hwoffload_help, then I called it in validate_xmit_skb() to fix situations that can't be recovered by the NIC driver (it's the case where NETIF_F_CSUM_MASK bits are all zero).
Today most NICs can provide at least HW offload for Internet Checksum:
that's why I'm a bit doubtful if it's ok to spend extra CPU cycles in validate_xmit_skb() to ensure correct CRC in some scenarios. Since this issue affects some (not all) NICs, maybe it's better to drop patch 4, or part of it, and provide a fix for individual drivers that don't currently handle non-checksummed SCTP packets. But to do that, we need at least patch 1 and the small code below.
------------------- 8< --------------------------
include/linux/skbuff.h +0 -0
@@ -200,7 +200,8 @@
* accordingly. Note the there is no indication in the skbuff that the * CHECKSUM_PARTIAL refers to an FCOE checksum, a driver that supports * both IP checksum offload and FCOE CRC offload must verify which offload
- * is configured for a packet presumably by inspecting packet headers.
+ * is configured for a packet presumably by inspecting packet headers; in
+ * case, skb_sctp_csum_help is provided to compute CRC on SCTP packets. *
* E. Checksumming on output with GSO.
*
net/core/dev.c +0 -0
@@ -2580,6 +2580,42 @@ int skb_checksum_help(struct sk_buff *skb)
}
EXPORT_SYMBOL(skb_checksum_help);
+int skb_sctp_csum_help(struct sk_buff *skb)
+{
+ __le32 crc32c_csum;
+ int ret = 0, offset;
+
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ goto out;
+ if (unlikely(skb_is_gso(skb)))
+ goto out;
+ if (skb_has_shared_frag(skb)) {
+ ret = __skb_linearize(skb);
+ if (ret)
+ goto out;
+ }
+
+ offset = skb_checksum_start_offset(skb);
+ crc32c_csum = cpu_to_le32(~__skb_checksum(skb, offset,
+ skb->len - offset, ~(__u32)0,
+ sctp_csum_stub));
+
+ offset += offsetof(struct sctphdr, checksum);
+ BUG_ON(offset >= skb_headlen(skb));
+
+ if (skb_cloned(skb) &&
+ !skb_clone_writable(skb, offset + sizeof(__le32))) {
+ ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+ if (ret)
+ goto out;
+ }
+ *(__le32 *)(skb->data + offset) = crc32c_csum;
+ skb->ip_summed = CHECKSUM_NONE;
+out:
+ return ret;
+}
+EXPORT_SYMBOL(skb_sctp_csum_help);
+
__be16 skb_network_protocol(struct sk_buff *skb, int *depth) {
__be16 type = skb->protocol;
--
2.7.4
------------------- >8 --------------------------
Thank you again for paying attention to this, and I would appreciate if you share your opinion.
Notes:
[1] see commit c80fafbbb59e ("veth: sctp: add NETIF_F_SCTP_CRC to device features")
[2] see commit c008b33f3ef ("net/sched: act_csum: compute crc32c on SCTP packets"). We could also turn off NETIF_F_SCTP_CRC bit from vethA, but this would generate useless crc32c calculations if the SCTP server is not outside the physical node (e.g. it is bound to br0), leading to a throughput degradation.
RE: [RFC PATCH net-next 2/5] net: split skb_checksum_help
RnJvbTogRGF2aWRlIENhcmF0dGkNCj4gU2VudDogMDIgRmVicnVhcnkgMjAxNyAxNTowNw0KPiA+ IEZyb206IFRvbSBIZXJiZXJ0DQo+ID4gPg0KPiA+ID4gU2VudDogMjMgSmFudWFyeSAyMDE3IDIx OjAwDQo+ID4gLi4NCj4gPiA+DQo+ID4gPiBza2JfY2hlY2tzdW1faGVscCBpcyBzcGVjaWZpYyB0 byB0aGUgSW50ZXJuZXQgY2hlY2tzdW0uIEZvciBpbnN0YW5jZSwNCj4gPiA+IENIRUNLU1VNX0NP TVBMRVRFIGNhbiBfb25seV8gcmVmZXIgdG8gSW50ZXJuZXQgY2hlY2tzdW0gY2FsY3VsYXRpb24N Cj4gPiA+IG5vdGhpbmcgZWxzZSB3aWxsIHdvcmsuIENoZWNrc3VtcyBhbmQgQ1JDcyBhcmUgdmVy eSBkaWZmZXJlbnQgdGhpbmdzDQo+ID4gPiB3aXRoIHZlcnkgZGlmZmVyZW50IHByb2Nlc3Npbmcu IFRoZXkgYXJlIG5vdCBpbnRlcmNoYW5nZWFibGUsIGhhdmUNCj4gPiA+IHZlcnkgZGlmZmVyZW50 IHByb3BlcnRpZXMsIGFuZCBoZW5jZSBpdCBpcyBhIG1pc3Rha2UgdG8gdHJ5IHRvIHNob2UNCj4g PiA+IGhvcm4gdGhpbmdzIHNvIHRoYXQgdGhleSB1c2UgYSBjb21tb24gaW5mcmFzdHJ1Y3R1cmUu DQo+ID4gPg0KPiANCj4gdHJ1ZSwgd2UgZG9uJ3QgbmVlZCB0byB0ZXN0IENIRUNLU1VNX0NPTVBM RVRFIG9uIHNrYnMgY2FycnlpbmcgU0NUUC4NCj4gU28gbWF5YmUgd2UgY2FuIHNpbXBseSByZXBs YWNlIHBhdGNoZXMgMi81IGFuZCAzLzUgd2l0aCB0aGUgc21hbGxlciBvbmUgYXQNCj4gdGhlIGJv dHRvbSBvZiB0aGlzIG1lc3NhZ2UuDQoNCkkgaGF2ZSB0byBhZG1pdCB0byBub3Qga25vd2luZyBl eGFjdGx5IHdoYXQgdGhlIENIRUNLU1VNX3h4eCBmbGFncyBhY3R1YWxseSBtZWFuLg0KSSBoYXZl IGEgZ29vZCBpZGVhIGFib3V0IHdoYXQgdGhlIGludGVudGlvbiBpcyB0aG91Z2guDQoNCi4uLg0K PiBPbiBUdWUsIDIwMTctMDEtMjQgYXQgMTY6MzUgKzAwMDAsIERhdmlkIExhaWdodCB3cm90ZToN Cj4gPg0KPiA+IEkgY2FuIGltYWdpbmUgaG9ycmlkIHRoaW5ncyBoYXBwZW5pbmcgaWYgc29tZW9u ZSB0cmllcyB0byBlbmNhcHN1bGF0ZQ0KPiA+IFNDVFAvSVAgaW4gVURQIChvciB3b3JzZSBVRFAv SVAgaW4gU0NUUCkuDQo+ID4NCj4gPiBGb3IgVURQIGluIFVEUCBJIHN1c3BlY3QgdGhhdCBDSEVD S1NVTV9DT01QTEVURSBvbiBhbiBpbm5lciBVRFAgcGFja2V0DQo+ID4gYWxsb3dzIHRoZSBvdXRl ciBjaGVja3N1bSBiZSBjYWxjdWxhdGVkIGJ5IGlnbm9yaW5nIHRoZSBpbm5lciBwYWNrZXQNCj4g PiAoc2luY2UgaXQgc3VtcyB0byB6ZXJvKS4NCj4gPiBUaGlzIGp1c3QgaXNuJ3QgdHJ1ZSBpZiBT Q1RQIGlzIGludm9sdmVkLg0KPiA+IFRoZXJlIGFyZSB0cmlja3MgdG8gZ2VuZXJhdGUgYSBjcmMg b2YgYSBsb25nZXIgcGFja2V0LCBidXQgdGhleSdkIG9ubHkNCj4gPiB3b3JrIGZvciBTQ1RQIGlu IFNDVFAuDQo+ID4NCj4gPiBGb3Igbm9uLWVuY2Fwc3VsYXRlZCBwYWNrZXRzIGl0IGlzIGEgZGlm ZmVyZW50IG1hdHRlci4NCj4gDQo+IElmIHdlIGxpbWl0IHRoZSBzY29wZSB0byBza2JzIGhhdmlu ZyBpcF9zdW1tZWQgZXF1YWwgdG8gQ0hFQ0tTVU1fUEFSVElBTCwNCj4gbGlrZSBpdCdzIGRvbmUg aW4gcGF0Y2ggNCwgd2Ugb25seSBuZWVkIGNoZWNrc3VtbWluZyB0aGUgcGFja2V0IHN0YXJ0aW5n DQo+IGZyb20gY3N1bV9zdGFydCB0byBpdHMgZW5kLCBhbmQgY29weSB0aGUgY29tcHV0ZWQgdmFs dWUgdG8gY3N1bV9vZmZzZXQuDQo+IFRoZSBkaWZmaWN1bHQgdGhpbmcgaXMgZGlzY3JpbWluYXRp bmcgc2ticyB0aGF0IG5lZWQgQ1JDMzJjLCBuYW1lbHkgU0NUUCwNCj4gZnJvbSB0aGUgcmVzdCBv ZiB0aGUgdHJhZmZpYyAodGhhdCB3aWxsIGxpa2VseSBiZSBjaGVja3N1bW1lZCBieQ0KPiBza2Jf Y2hlY2tzdW1faGVscCkuDQouLi4NCg0KSSdtIGd1ZXNzaW5nIHRoYXQgdGhlIFNDVFAgY29kZSBv bmx5IHNldHMgQ0hFQ0tTVU1fUEFSVElBTCAoYW5kIGRvZXNuJ3QNCnBlcmZvcm0gdGhlIGNoZWNr c3VtKSBpZiBpdCBzb21laG93IGtub3dzIHRoYXQgdGhlIHRhcmdldCBpbnRlcmZhY2UNCnN1cHBv cnRzIENSQzMyYyBjaGVja3N1bXMuDQoNCkknZCBwdXQgdGhlIG9udXMgb24gYW55IHN1Y2ggaW50 ZXJmYWNlIHRvIHBlcmZvcm0gdGhlIGNoZWNrc3VtIChhbmQNCnNldCBDSEVDS1NVTV9DT01QTEVU RSAob3IgaXMgaXQgVU5ORUNFU1NBUlk/KSBiZWZvcmUgcGFzc2luZyB0aGUgDQptZXNzYWdlIG9u dG8gYW4gaW50ZXJmYWNlIHRoYXQgZG9lc24ndCBhZHZlcnRpc2UgQ1JDMzIgc3VwcG9ydC4NCg0K WW91IGNlcnRhaW5seSBkb24ndCB3YW50IHRvIGhhdmUgdG8gZ28gdGhyb3VnaCBhbGwgdGhlIGV0 aGVybmV0IGRyaXZlcnMhDQoNCj4gDQo+IC0tLS0tLS0tLS0tLS0tLS0tLS0gODwgLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0NCj4gLS0tIGEvaW5jbHVkZS9saW51eC9za2J1ZmYuaA0KPiArKysg Yi9pbmNsdWRlL2xpbnV4L3NrYnVmZi5oDQo+IEBAIC0yMDAsNyArMjAwLDggQEANCj4gICphY2Nv cmRpbmdseS4gTm90ZSB0aGUgdGhlcmUgaXMgbm8gaW5kaWNhdGlvbiBpbiB0aGUgc2tidWZmIHRo YXQgdGhlDQo+ICAqQ0hFQ0tTVU1fUEFSVElBTCByZWZlcnMgdG8gYW4gRkNPRSBjaGVja3N1bSwg YSBkcml2ZXIgdGhhdCBzdXBwb3J0cw0KPiAgKmJvdGggSVAgY2hlY2tzdW0gb2ZmbG9hZCBhbmQg RkNPRSBDUkMgb2ZmbG9hZCBtdXN0IHZlcmlmeSB3aGljaCBvZmZsb2FkDQo+IC0gKmlzIGNvbmZp Z3VyZWQgZm9yIGEgcGFja2V0IHByZXN1bWFibHkgYnkgaW5zcGVjdGluZyBwYWNrZXQgaGVhZGVy cy4NCj4gKyAqaXMgY29uZmlndXJlZCBmb3IgYSBwYWNrZXQgcHJlc3VtYWJseSBieSBpbnNwZWN0 aW5nIHBhY2tldCBoZWFkZXJzOyBpbg0KPiArICpjYXNlLCBza2Jfc2N0cF9jc3VtX2hlbHAgaXMg cHJvdmlkZWQgdG8gY29tcHV0ZSBDUkMgb24gU0NUUCBwYWNrZXRzLg0KPiAgKg0KPiAgKiBFLiBD aGVja3N1bW1pbmcgb24gb3V0cHV0IHdpdGggR1NPLg0KPiAgKg0KPiBkaWZmIC0tZ2l0IGEvbmV0 L2NvcmUvZGV2LmMgYi9uZXQvY29yZS9kZXYuYw0KPiBpbmRleCBhZDU5NTllLi5mYTliZTZkIDEw MDY0NA0KPiAtLS0gYS9uZXQvY29yZS9kZXYuYw0KPiArKysgYi9uZXQvY29yZS9kZXYuYw0KPiBA QCAtMjU4MCw2ICsyNTgwLDQyIEBAIGludCBza2JfY2hlY2tzdW1faGVscChzdHJ1Y3Qgc2tfYnVm ZiAqc2tiKQ0KPiB9DQo+IEVYUE9SVF9TWU1CT0woc2tiX2NoZWNrc3VtX2hlbHApOw0KPiANCj4g K2ludCBza2Jfc2N0cF9jc3VtX2hlbHAoc3RydWN0IHNrX2J1ZmYgKnNrYikNCj4gK3sNCj4gKwlf X2xlMzIgY3JjMzJjX2NzdW07DQo+ICsJaW50IHJldCA9IDAsIG9mZnNldDsNCj4gKw0KPiArCWlm IChza2ItPmlwX3N1bW1lZCAhPSBDSEVDS1NVTV9QQVJUSUFMKQ0KPiArCQlnb3RvIG91dDsNCj4g KwlpZiAodW5saWtlbHkoc2tiX2lzX2dzbyhza2IpKSkNCj4gKwkJZ290byBvdXQ7DQo+ICsJaWYg KHNrYl9oYXNfc2hhcmVkX2ZyYWcoc2tiKSkgew0KPiArCQlyZXQgPSBfX3NrYl9saW5lYXJpemUo c2tiKTsNCg0KSSBkb24ndCB0aGluayB5b3UgcmVhbGx5IHdhbnQgdG8gbGluZWFyaXplIHRoZSBw YWNrZXQuDQouLi4NCg0KCURhdmlkDQoNCg=
Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help
In reply to Davide CarattiQuoted 21 lines · Davide Caratti
hello Tom and David,
thank you for the attention.
Quoted 12 lines
From: Tom Herbert
Quoted 2 lines
Sent: 23 January 2017 21:00
..
Quoted 8 lines
skb_checksum_helpis specific to the Internet checksum. For instance,CHECKSUM_COMPLETEcan _only_ refer to Internet checksum calculation nothing else will work. Checksums and CRCs are very different things with very different processing. They are not interchangeable, have very different properties, and hence it is a mistake to try to shoe horn things so that they use a common infrastructure.true, we don't need to test
CHECKSUM_COMPLETEon skbs carrying SCTP. So maybe we can simply replace patches 2/5 and 3/5 with the smaller one at the bottom of this message.
Quoted 9 lines
Quoted 3 lines
Quoted 3 lines
It might make sense to create some CRC helper functions, but last time I checked there are so few users of CRC in skbufs I'm not even sure that would make sense.
This is exactly the cause of issues I see with SCTP. These packets can be wrongly checksummed using
skb_checksum_help, or simply not checksummed at all; and in both cases, the packet goes out from the NIC with wrong L4 checksum.
Okay, makes sense. Please consider doing the following:
- Add a bit to skbuf called something like "csum_not_inet". When ip_summed = CHECKSUM_PARTIAL and this bit is set that means we are dealing with something other than an Internet checksum.
- At the top of skb_checksum_help (or maybe before the point where the inet specific checksum start begins do something like:
if (unlikely(skb->csum_not_inet))
return skb_checksum_help_not_inet(...); The rest of skb_checksum_help should remained unchanged.
- Add a description of the new bit and how skb_checksum_help can work to the comments for CHECKSUM_PARTIAL in skbuff.h
- Add FCOE to the list of protocol that can set CHECKSUM_UNNECESSARY for a CRC/csum
- Add a note to CHECKSUM_COMPLETE section that it can only refer to an Internet checksum
Thanks,
Tom
Quoted 144 lines
For example: there are scenarios, even the trivial one below, where skb carrying SCTP packets are wrongly checksummed, because the originating socket read
NETIF_F_SCTP_CRCbit in the underlying device features. Then, after the kernel forwards the skb, the final transmission happens on another device where CRC offload is not available: this typically leads to bad checksums on transmitted SCTP packets.namespace 1 | namespace 2 | | br0 | +------- Linux bridge -------+ | | | | V V vethA <-----------> vethB eth0 | |when a socket bound to vethA in namespace 1 generates an INIT packet, it's not checksummed since veth devices have
NETIF_F_SCTP_CRCset [1]. Then, after vethB receives the packet in namespace 2, linux bridge forwards it to eth0, and (depending on eth0 driver code), it will be transmitted with wrong CRC32c or simply dropped.Quoted 4 lines · David Laight
I can imagine horrid things happening if someone tries to encapsulate SCTP/IP in UDP (or worse UDP/IP in SCTP).
Quoted 8 lines
For UDP in UDP I suspect that
CHECKSUM_COMPLETEon an inner UDP packet allows the outer checksum be calculated by ignoring the inner packet (since it sums to zero).
This just isn't true if SCTP is involved.
There are tricks to generate a crc of a longer packet, but they'd only work for SCTP in SCTP.For non-encapsulated packets it is a different matter.
If we limit the scope to skbs having
ip_summedequal toCHECKSUM_PARTIAL, like it's done in patch 4, we only need checksumming the packet starting fromcsum_startto its end, and copy the computed value tocsum_offset. The difficult thing is discriminating skbs that need CRC32c, namely SCTP, from the rest of the traffic (that will likely be checksummed byskb_checksum_help).Currently, the only way to fix wrong CRCs in the scenario above is to configure tc filter with "csum" action on eth0 egress, to compensate the missing capability of eth0 driver to deal with SCTP packets having
ip_summedequal toCHECKSUM_PARTIAL[2].Patch 4 in the series is an attempt to solve the issue, both for encapsulated and non-encapsulated skbs, calling
skb_csum_hwoffload_help()insidevalidate_xmit_skb. In order to look for unchecksummed SCTP packets, I took inspiration from a Linux-4.4 commit (6ae23ad36253"net: Add driver helper functions ...) to implementskb_csum_hwoffload_help, then I called it invalidate_xmit_skb()to fix situations that can't be recovered by the NIC driver (it's the case whereNETIF_F_CSUM_MASKbits are all zero).Today most NICs can provide at least HW offload for Internet Checksum:
that's why I'm a bit doubtful if it's ok to spend extra CPU cycles invalidate_xmit_skb()to ensure correct CRC in some scenarios. Since this issue affects some (not all) NICs, maybe it's better to drop patch 4, or part of it, and provide a fix for individual drivers that don't currently handle non-checksummed SCTP packets. But to do that, we need at least patch 1 and the small code below.------------------- 8< --------------------------
include/linux/skbuff.h +2
-1@@ -200,7 +200,8 @@* accordingly. Note the there is no indication in the skbuff that the * CHECKSUM_PARTIAL refers to an FCOE checksum, a driver that supports * both IP checksum offload and FCOE CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers. +* is configured for a packet presumably by inspecting packet headers; in +* case, skb_sctp_csum_help is provided to compute CRC on SCTP packets. * * E. Checksumming on output with GSO. * net/core/dev.c +36
-1@@ -2580,6 +2580,42 @@ int skb_checksum_help(struct sk_buff *skb) }EXPORT_SYMBOL (skb_checksum_help); +int skb_sctp_csum_help (struct sk_buff *skb) +{ +__le32 crc32c_csum; +int ret =0 , offset; + +if (skb->ip_summed !=CHECKSUM_PARTIAL ) + goto out; +if (unlikely (skb_is_gso (skb))) + goto out; +if (skb_has_shared_frag (skb)) { + ret =__skb_linearize (skb); +if (ret) + goto out; + } + + offset =skb_checksum_start_offset (skb); + crc32c_csum =cpu_to_le32 (~__skb_checksum (skb, offset, + skb->len - offset, ~(__u32 )0 , + sctp_csum_stub)); + + offset += offsetof(struct sctphdr , checksum); +BUG_ON (offset >=skb_headlen (skb)); + +if (skb_cloned (skb) && + !skb_clone_writable (skb, offset +sizeof (__le32))) { + ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); +if (ret) + goto out; + } + *(__le32 *)(skb->data + offset) = crc32c_csum; + skb->ip_summed =CHECKSUM_NONE ; +out: +return ret; +} +EXPORT_SYMBOL (skb_sctp_csum_help); +__be16 skb_network_protocol (struct sk_buff *skb,int *depth) {__be16 type = skb->protocol; --2.7.4
------------------- >8 --------------------------Thank you again for paying attention to this, and I would appreciate if you share your opinion.
Notes:
[1] see commit
c80fafbbb59e("veth: sctp: addNETIF_F_SCTP_CRCto device features")
[2] see commitc008b33f3ef("net/sched:act_csum: compute crc32c on SCTP packets"). We could also turn offNETIF_F_SCTP_CRCbit from vethA, but this would generate useless crc32c calculations if the SCTP server is not outside the physical node (e.g. it is bound to br0), leading to a throughput degradation.
Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help
Quoted 3 lines · Tom Herbert
Quoted 3 lines
Quoted 3 lines
Quoted 3 lines
It might make sense to create some CRC helper functions, but last time I checked there are so few users of CRC in skbufs I'm not even sure that would make sense.
hello Tom and David,
after some (thinking + testing) time, I'm going to re-post this RFC as v2 with some feedbacks. Thank you in advance for looking at it!
Quoted 11 lines · Tom Herbert
Quoted 5 lines · Davide Caratti
This is exactly the cause of issues I see with SCTP. These packets can be wrongly checksummed using
skb_checksum_help, or simply not checksummed at all; and in both cases, the packet goes out from the NIC with wrong L4 checksum.Okay, makes sense. Please consider doing the following:
- Add a bit to skbuf called something like "
csum_not_inet". Whenip_summed=CHECKSUM_PARTIALand this bit is set that means we are dealing with something other than an Internet checksum.
Ok, done. Another solution would be to extend possible values of skb->ip_summed, and define a new value suitable for identifying not-yet-checksummed SCTP packets (something like CRC32C_PARTIAL). Since skb->ip_summed is 2-bit wide, the overall effect on skb metadata is the same as adding skb->csum_not_inet [1].
Quoted 7 lines
- At the top of
skb_checksum_help(or maybe before the point where the inet specific checksum start begins do something like:if (unlikely(skb->csum_not_inet)) return skb_checksum_help_not_inet(...);The rest of
skb_checksum_helpshould remained unchanged.
According to documentation [2], validate_xmit_skb() is a good place where the if() statement above can be done, to preserve the possibility of having the CRC32c computation offloaded by the NIC hardware:
if (unlikely(skb->csum_not_inet && !(features & NETIF_F_SCTP_CRC))
return skb_checksum_help_not_inet(...);
Quoted 6 lines · David Laight
I'd put the onus on any such interface to perform the checksum (and set
CHECKSUM_COMPLETE(or is it UNNECESSARY?) before passing the message onto an interface that doesn't advertise CRC32 support.You certainly don't want to have to go through all the ethernet drivers!
Ideally, a driver not able to offload checksum computation should call skb_checksum_help() or skb_sctp_csum_help() to resolve CHECKSUM_PARTIAL and turn it to CHECKSUM_NONE.
But this wouldn't solve all possible setups: there can be scenarios where the NIC is configured with NETIF_F_SCTP_CRC set and NETIF_F_CSUM_HW cleared (it's evil, but possible). In this situation, non-GSO SCTP packets having CHECKSUM_PARTIAL will be systematically corrupted when they are processed by validate_xmit_skb().
Quoted 3 lines · Tom Herbert
- Add a description of the new bit and how
skb_checksum_helpcan work to the comments forCHECKSUM_PARTIALinskbuff.h
Done.
Quoted 3 lines
- Add FCOE to the list of protocol that can set
CHECKSUM_UNNECESSARYfor a CRC/csum
Done.
Quoted 3 lines
- Add a note to
CHECKSUM_COMPLETEsection that it can only refer to an Internet checksum
Done.
/* references + notes */
[1] ... this recalls to latest comment from David Laight:
Quoted 3 lines · David Laight
I have to admit to not knowing exactly what the
CHECKSUM_xxxflags actually mean. I have a good idea about what the intention is though.
According to domumentation, CHECKSUM_COMPLETE and CHECKSUM_UNNECESSARY are not used for SCTP (nor in the TX path at all); nevertheless, IPVS snat/dnat actually set CHECKSUM_UNNECESSARY on SCTP packets after the checksum is updated (see 97203abe6bc4 "net: ipvs: sctp: do not recalc...).
I'm not sure if setting CHECKSUM_UNNECESSARY fits my case, because this would implicitly skip RX validation when using devices like veth or loopback.
[2] Documentation/networking/checksum_offloads.txt
regards,
--
davide
Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help
Quoted 86 lines · Davide Caratti
Quoted 3 lines · Tom Herbert
Quoted 3 lines
Quoted 3 lines
Quoted 3 lines
It might make sense to create some CRC helper functions, but last time I checked there are so few users of CRC in skbufs I'm not even sure that would make sense.
hello Tom and David,
after some (thinking + testing) time, I'm going to re-post this RFC as v2 with some feedbacks. Thank you in advance for looking at it!
Quoted 11 lines · Tom Herbert
Quoted 5 lines · Davide Caratti
This is exactly the cause of issues I see with SCTP. These packets can be wrongly checksummed using
skb_checksum_help, or simply not checksummed at all; and in both cases, the packet goes out from the NIC with wrong L4 checksum.Okay, makes sense. Please consider doing the following:
- Add a bit to skbuf called something like "
csum_not_inet". Whenip_summed=CHECKSUM_PARTIALand this bit is set that means we are dealing with something other than an Internet checksum.Ok, done. Another solution would be to extend possible values of
skb->ip_summed, and define a new value suitable for identifying not-yet-checksummed SCTP packets (something likeCRC32C_PARTIAL). Sinceskb->ip_summedis 2-bit wide, the overall effect on skb metadata is the same as addingskb->csum_not_inet[1].Quoted 7 lines
- At the top of
skb_checksum_help(or maybe before the point where the inet specific checksum start begins do something like:if (unlikely(skb->csum_not_inet)) return skb_checksum_help_not_inet(...);The rest of
skb_checksum_helpshould remained unchanged.According to documentation [2],
validate_xmit_skb()is a good place where theif()statement above can be done, to preserve the possibility of having the CRC32c computation offloaded by the NIC hardware:if (
unlikely(skb->csum_not_inet && !(features & NETIF_F_SCTP_CRC))return skb_checksum_help_not_inet(...);Quoted 6 lines · David Laight
I'd put the onus on any such interface to perform the checksum (and set
CHECKSUM_COMPLETE(or is it UNNECESSARY?) before passing the message onto an interface that doesn't advertise CRC32 support.You certainly don't want to have to go through all the ethernet drivers!
Ideally, a driver not able to offload checksum computation should call
skb_checksum_help()orskb_sctp_csum_help()to resolveCHECKSUM_PARTIALand turn it toCHECKSUM_NONE.
But this wouldn't solve all possible setups: there can be scenarios where the NIC is configured withNETIF_F_SCTP_CRCset andNETIF_F_CSUM_HWcleared (it's evil, but possible). In this situation, non-GSO SCTP packets havingCHECKSUM_PARTIALwill be systematically corrupted when they are processed byvalidate_xmit_skb().Quoted 3 lines · Tom Herbert
- Add a description of the new bit and how
skb_checksum_helpcan work to the comments forCHECKSUM_PARTIALinskbuff.hDone.
Quoted 3 lines
- Add FCOE to the list of protocol that can set
CHECKSUM_UNNECESSARYfor a CRC/csumDone.
Quoted 3 lines
- Add a note to
CHECKSUM_COMPLETEsection that it can only refer to an Internet checksumDone.
/* references + notes */
[1] ... this recalls to latest comment from David Laight:
Quoted 1 line · David Laight
Quoted 8 lines
Quoted 2 lines
I have to admit to not knowing exactly what the
CHECKSUM_xxxflags actually mean. I have a good idea about what the intention is though.According to domumentation,
CHECKSUM_COMPLETEandCHECKSUM_UNNECESSARYare not used for SCTP (nor in the TX path at all); nevertheless, IPVS snat/dnat actually setCHECKSUM_UNNECESSARYon SCTP packets after the checksum is updated (see97203abe6bc4"net: ipvs: sctp: do not recalc...).
CHECKSUM_PARTIAL is the preferred mechanism on the transmit path this defers defers the checksum computation as long as possible. Unfortunately, if SCTP is encapsulated in UDP we will probably need to run the SCTP CRC on the host which will be done with your changes to skb_checksum_help.
Quoted 3 lines
I'm not sure if setting
CHECKSUM_UNNECESSARYfits my case, because this would implicitly skip RX validation when using devices like veth or loopback.
CHECKSUM_UNNECESSARY can be used in the transmit path (really the forwarding path), however this I think this must imply that the checksum in the packet must be correct. Please see my post about drivers that are mistakingly using CHECKSUM_UNNECESSARY with LRO since the checksum in the packet sent into the stack is not correct.
Tom
Quoted 5 lines
[2]
Documentation/networking/checksum_offloads.txtregards,
--
davide
Re: [RFC PATCH net-next 2/5] net: split skb_checksum_help
Quoted 5 lines · Tom Herbert
CHECKSUM_PARTIALis the preferred mechanism on the transmit path this defers defers the checksum computation as long as possible. Unfortunately, if SCTP is encapsulated in UDP we will probably need to run the SCTP CRC on the host which will be done with your changes toskb_checksum_help.
right. Tunnel devices have NETIF_F_SCTP_CRC bit cleared and NETIF_F_HW_CSUM bit set: so, in this case csum_not_inet can help recovering non-GSO SCTP packets having ip_summed equal to CHECKSUM_PARTIAL.
Quoted 8 lines
Quoted 3 lines
I'm not sure if setting
CHECKSUM_UNNECESSARYfits my case, because this would implicitly skip RX validation when using devices like veth or loopback.
CHECKSUM_UNNECESSARYcan be used in the transmit path (really the forwarding path), however this I think this must imply that the checksum in the packet must be correct. Please see my post about drivers that are mistakingly usingCHECKSUM_UNNECESSARYwith LRO since the checksum in the packet sent into the stack is not correct.
Ok, now I'm more convinced to use CHECKSUM_NONE :-)
thank you for the attention!
regards
--
davide
Â
RFC PATCH v2 1/4 skbuff: add stub to help computing crc32c on SCTP packets
In reply to Davide Carattisctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so it can't be used in net core. Like it has been done previously with other symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops to allow computation of SCTP checksum in net core after sctp.ko (and thus libcrc32c) has been loaded.
--- include/linux/skbuff.h | 2 ++ net/core/skbuff.c | 20 ++++++++++++++++++++ net/sctp/offload.c | 7 +++++++ 3 files changed, 29 insertions(+)
include/linux/skbuff.h +2 -0
@@ -3125,6 +3125,8 @@ struct skb_checksum_ops {__wsum (*combine)(__wsum csum,__wsum csum2,int offset,int len); }; +extern const struct skb_checksum_ops *sctp_csum_stub__read_mostly ; +__wsum __skb_checksum (const struct sk_buff *skb,int offset,int len,__wsum csum,const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
net/core/skbuff.c +19 -0
@@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, }EXPORT_SYMBOL (skb_copy_and_csum_bits); +static __wsum warn_sctp_csum_update (const void *buff,int len,__wsum sum) +{ +net_warn_ratelimited ("attempt to compute crc32c without sctp.ko\n" ); +return 0 ; +} + +static __wsum warn_sctp_csum_combine (__wsum csum,__wsum csum2, +int offset,int len) +{ +net_warn_ratelimited ("attempt to compute crc32c without sctp.ko\n" ); +return 0 ; +} + +const struct skb_checksum_ops *sctp_csum_stub __read_mostly + &(struct skb_checksum_ops) { + .update = warn_sctp_csum_update, + .combine = warn_sctp_csum_combine, +}; +EXPORT_SYMBOL (sctp_csum_stub); +/** * skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy() * @from: source buffer
net/sctp/offload.c +6 -0
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = { }, }; +static const struct skb_checksum_ops *sctp_csum_ops __read_mostly + &(struct skb_checksum_ops) { + .update = sctp_csum_update, + .combine = sctp_csum_combine, +}; +int __init sctp_offload_init (void ) {int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)if (ret) goto ipv4; + sctp_csum_stub = sctp_csum_ops;return ret; ipv4:
Signature · 1 line
2.7.4
Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets
Quoted 5 lines · Davide Caratti
sctp_compute_checksumrequires crc32c symbol (provided by libcrc32c), so it can't be used in net core. Like it has been done previously with other symbols (e.g.ipv6_dst_lookup), introduce a stub structskb_checksum_opsto allow computation of SCTP checksum in net core after sctp.ko (and thus libcrc32c) has been loaded.
At a minimum the name really needs to change. SCTP does not do checksums. It does a CRC, and a CRC is a very different thing. The fact that somebody decided that offloading a CRC could use the same framework is very unfortunate, and your patch descriptions in this whole set are calling out a CRC as checksums which it is not.
I don't want to see anything "checksum" or "csum" related in the naming when it comes to dealing with SCTP unless we absolutely have to have it. So any function names or structures with sctp in the name should call out "crc32" or "crc", please don't use checksum.
Quoted 78 lines
Reviewed-by Marcelo Ricardo Leitner <[email protected]>Signed-off-by Davide Caratti <[email protected]>--- include/linux/skbuff.h | 2 ++ net/core/skbuff.c | 20 ++++++++++++++++++++ net/sctp/offload.c | 7 +++++++ 3 files changed, 29 insertions(+)include/linux/skbuff.h +2
-0@@ -3125,6 +3125,8 @@ struct skb_checksum_ops {__wsum (*combine)(__wsum csum,__wsum csum2,int offset,int len); }; +extern const struct skb_checksum_ops *sctp_csum_stub__read_mostly ; +__wsum __skb_checksum (const struct sk_buff *skb,int offset,int len,__wsum csum,const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,net/core/skbuff.c +19
-0@@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, }EXPORT_SYMBOL (skb_copy_and_csum_bits); +static __wsum warn_sctp_csum_update (const void *buff,int len,__wsum sum) +{ +net_warn_ratelimited ("attempt to compute crc32c without sctp.ko\n" ); +return 0 ; +} + +static __wsum warn_sctp_csum_combine (__wsum csum,__wsum csum2, +int offset,int len) +{ +net_warn_ratelimited ("attempt to compute crc32c without sctp.ko\n" ); +return 0 ; +} + +const struct skb_checksum_ops *sctp_csum_stub __read_mostly > + &(struct skb_checksum_ops) { + .update = warn_sctp_csum_update, + .combine = warn_sctp_csum_combine, +}; +EXPORT_SYMBOL (sctp_csum_stub); +/** * skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy() * @from: source buffer net/sctp/offload.c +6
-1@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = { }, }; +static const struct skb_checksum_ops *sctp_csum_ops __read_mostly > + &(struct skb_checksum_ops) { + .update = sctp_csum_update, + .combine = sctp_csum_combine, +}; +int __init sctp_offload_init (void ) {int ret;@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)if (ret) goto ipv4; + sctp_csum_stub = sctp_csum_ops;return ret; ipv4: --2.7.4
Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets
Quoted 13 lines · Alexander Duyck
Quoted 5 lines · Davide Caratti
sctp_compute_checksumrequires crc32c symbol (provided by libcrc32c), so it can't be used in net core. Like it has been done previously with other symbols (e.g.ipv6_dst_lookup), introduce a stub structskb_checksum_opsto allow computation of SCTP checksum in net core after sctp.ko (and thus libcrc32c) has been loaded.At a minimum the name really needs to change. SCTP does not do checksums. It does a CRC, and a CRC is a very different thing. The fact that somebody decided that offloading a CRC could use the same framework is very unfortunate, and your patch descriptions in this whole set are calling out a CRC as checksums which it is not.
Quoted 5 lines
I don't want to see anything "checksum" or "csum" related in the naming when it comes to dealing with SCTP unless we absolutely have to have it. So any function names or structures with sctp in the name should call out "crc32" or "crc", please don't use checksum.
Alexander,
I agree that internal functions to sctp should not refer to checksum, but I think we need to take care to be consistent with any external API (even if somebody made a mistake defining it this way :-) ). As you know the checksum interface must be very precisely defined, there is no leeway for ambiguity. Many places in the stack use csum and CHECKSUM_* to refer to the API not the actual algorithm, others don't (e.g. CHECKSUM_UNNECESSARY can apply to SCTP checksum, CHECKSUM_COMPLETE must be an Internet checksum).
For instance, in that light skb_sctp_csum_help is appropriately named I think because this is being called from skb_csum_help and refers to the interface to resolve a checksum.
Tom
Quoted 78 lines
Quoted 78 lines
Reviewed-by Marcelo Ricardo Leitner <[email protected]>Signed-off-by Davide Caratti <[email protected]>--- include/linux/skbuff.h | 2 ++ net/core/skbuff.c | 20 ++++++++++++++++++++ net/sctp/offload.c | 7 +++++++ 3 files changed, 29 insertions(+)include/linux/skbuff.h +2
-0@@ -3125,6 +3125,8 @@ struct skb_checksum_ops {__wsum (*combine)(__wsum csum,__wsum csum2,int offset,int len); }; +extern const struct skb_checksum_ops *sctp_csum_stub__read_mostly ; +__wsum __skb_checksum (const struct sk_buff *skb,int offset,int len,__wsum csum,const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,net/core/skbuff.c +19
-0@@ -2242,6 +2242,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, }EXPORT_SYMBOL (skb_copy_and_csum_bits); +static __wsum warn_sctp_csum_update (const void *buff,int len,__wsum sum) +{ +net_warn_ratelimited ("attempt to compute crc32c without sctp.ko\n" ); +return 0 ; +} + +static __wsum warn_sctp_csum_combine (__wsum csum,__wsum csum2, +int offset,int len) +{ +net_warn_ratelimited ("attempt to compute crc32c without sctp.ko\n" ); +return 0 ; +} + +const struct skb_checksum_ops *sctp_csum_stub __read_mostly >> + &(struct skb_checksum_ops) { + .update = warn_sctp_csum_update, + .combine = warn_sctp_csum_combine, +}; +EXPORT_SYMBOL (sctp_csum_stub); +/** * skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy() * @from: source buffer net/sctp/offload.c +6
-1@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = { }, }; +static const struct skb_checksum_ops *sctp_csum_ops __read_mostly >> + &(struct skb_checksum_ops) { + .update = sctp_csum_update, + .combine = sctp_csum_combine, +}; +int __init sctp_offload_init (void ) {int ret;@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)if (ret) goto ipv4; + sctp_csum_stub = sctp_csum_ops;return ret; ipv4: --2.7.4
RE: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets
In reply to Alexander DuyckRnJvbTogQWxleGFuZGVyIER1eWNrDQo+IFNlbnQ6IDI4IEZlYnJ1YXJ5IDIwMTcgMjI6NDYNCi4u Lg0KPiBJIGRvbid0IHdhbnQgdG8gc2VlIGFueXRoaW5nICJjaGVja3N1bSIgb3IgImNzdW0iIHJl bGF0ZWQgaW4gdGhlDQo+IG5hbWluZyB3aGVuIGl0IGNvbWVzIHRvIGRlYWxpbmcgd2l0aCBTQ1RQ IHVubGVzcyB3ZSBhYnNvbHV0ZWx5IGhhdmUgdG8NCj4gaGF2ZSBpdC4gIFNvIGFueSBmdW5jdGlv biBuYW1lcyBvciBzdHJ1Y3R1cmVzIHdpdGggc2N0cCBpbiB0aGUgbmFtZQ0KPiBzaG91bGQgY2Fs bCBvdXQgImNyYzMyIiBvciAiY3JjIiwgcGxlYXNlIGRvbid0IHVzZSBjaGVja3N1bS4NCg0KVGhl biBhbHNvIGNoYW5nZSBhbGwgdGhlIHBsYWNlcyB0aGF0IHJlZmVyIHRoZSBJUCAxJ3MgY29tcGxp bWVudA0KY2hlY2tzdW0gdG8gaXBjaGVja3N1bS4NCg0KCURhdmlkDQoNCg=
Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets
In reply to Alexander DuyckQuoted 8 lines · Alexander Duyck
Quoted 6 lines · Davide Caratti
sctp_compute_checksumrequires crc32c symbol (provided by libcrc32c), so it can't be used in net core. Like it has been done previously with other symbols (e.g.ipv6_dst_lookup), introduce a stub structskb_checksum_opsto allow computation of SCTP checksum in net core after sctp.ko (and thus libcrc32c) has been loaded.
Quoted 5 lines
At a minimum the name really needs to change. SCTP does not do checksums. It does a CRC, and a CRC is a very different thing. The fact that somebody decided that offloading a CRC could use the same framework is very unfortunate, and your patch descriptions in this whole set are calling out a CRC as checksums which it is not.
hello Alexander,
thank you for contributing to this topic. I see there has been a similar discussion some months ago
(https://www.mail-archive.com/[email protected]/msg94955.html).
Quoted 4 lines
I don't want to see anything "checksum" or "csum" related in the naming when it comes to dealing with SCTP unless we absolutely have to have it. So any function names or structures with sctp in the name should call out "crc32" or "crc", please don't use checksum.
Quoted 2 lines · David Laight
Then also change all the places that refer the IP 1's compliment checksum to ipchecksum.
(but crc32 uses a different polynomial than crc32c! :-) ) I understand your concerns, nevertheless we are writing to a member of struct sctphdr whose name is 'checksum' since the earliest introduction of SCTP; moreover, similar terminology ('crc32c checksum') is used throughout all RFC4960. That's why I don't think anybody will be confused by usage of 'csum' or 'checksum' words.
Quoted 5 lines · Tom Herbert
I agree that internal functions to sctp should not refer to checksum, but I think we need to take care to be consistent with any external API (even if somebody made a mistake defining it this way :-) ). As you know the checksum interface must be very precisely defined, there is no leeway for ambiguity.
We can make the new symbols more generic removing 'sctp' from the symbol name, and writing explicitly that skb needs crc32c (rather than skb does not need internet checksum).
Proposal:
we use crc32c, possibly combined with 'csum' or 'checksum', just like it has been done in RFC4960. So, symbol names can be replaced as follows:
RFC v2 name | RFC v3 name
-------------------------+-----------------------------
warn_sctp_csum_update | warn_crc32c_csum_update warn_sctp_csum_combine | warn_crc32c_csum_combine sctp_csum_stub | crc32c_csum_stub sctp_csum_ops | crc32c_csum_ops skb_sctp_csum_help | skb_crc32c_csum_help skb->csum_not_inet | skb->crc32c_csum
please let me know if the proposal can be acceptable from your point of view.
Quoted 5 lines · Tom Herbert
Unfortunately this potentially pushes the skbuf flags over 32 bits if I count correctly. I suggest that you rename
csum_badtocsum_not_inet. Looks likecsum_badis only set by a grand total of one driver and I don't believe that is enough to justify its existence. It's probably a good time to remove it.
you are right: find below the current layout obtained with 'allyesconfig':
short unsigned int queue_mapping; /* 140 2 */ unsigned char __cloned_offset[0]; /* 142 0 */ unsigned char cloned:1; /* 142: 7 1 */ unsigned char nohdr:1; /* 142: 6 1 */ unsigned char fclone:2; /* 142: 4 1 */ unsigned char peeked:1; /* 142: 3 1 */ unsigned char head_frag:1; /* 142: 2 1 */ unsigned char xmit_more:1; /* 142: 1 1 */ unsigned char __unused:1; /* 142: 0 1 */
/* XXX 1 byte hole, try to pack */
unsigned int headers_start[0]; /* 144 0 */ unsigned char __pkt_type_offset[0]; /* 144 0 */ unsigned char pkt_type:3; /* 144: 5 1 */
<...>
unsigned char ipvs_property:1; /* 147: 7 1 */ unsigned char inner_protocol_type:1; /* 147: 6 1 */ unsigned char remcsum_offload:1; /* 147: 5 1 */ unsigned char offload_fwd_mark:1; /* 147: 4 1 */ unsigned char tc_skip_classify:1; /* 147: 3 1 */ unsigned char tc_at_ingress:1; /* 147: 2 1 */ unsigned char tc_redirected:1; /* 147: 1 1 */ unsigned char tc_from_ingress:1; /* 147: 0 1 */ short unsigned int tc_index; /* 148 2 */
/* XXX 2 bytes hole, try to pack */
union {
unsigned int csum; /* 4 */
struct {
short unsigned int csum_start; /* 152 2 */
short unsigned int csum_offset; /* 154 2 */
}; /* 4 */
} /* 152 4 */
skb->tc_from_ingress is the last element of the 32 bits starting at skb->pkt_type. There are 16 bits free before skb->csum, and 9 free bits before skb->pkt_type. I don't think I can easily make room by removing 'csum_bad' as per your suggestion, because it is used by GRO and netfilter code also (see users of __skb_mark_checksum_bad()). So, either I place 'csum_not_inet' in one of the two above intervals (i.e replacing __unused with csum_not_inet AKA crc32c_csum), or I have to give up the (good) idea of using a bit in sk_buff.
BTW: unlike what I see with other NICs, using ixgbe driver I don't see corrupted L4 packets, even when SCTP CRC offload is turned off. Looking at the code, I see ixgbe_tx_csum does a simple test to identify SCTP in packets with CHECKSUM_PARTIAL and have their checksum resolved by the hardware:
switch (skb->csum_offset) {
case offsetof(struct tcphdr, check):
/* it's TCP */
/* fall-through */
case offsetof(struct udphdr, check)
/* it's UDP */
break;
case offsetof(struct scphdr, checksum):
if (/* an ipv4 or ipv6 header with protocol equal to
* IPPOROTO_SCTP is found
*/)
/* it's SCTP */
break;
}
/* fall through */
default:
skb_checksum_help(skb);
}The above code is functionally similar to what I did in patch 4/5 of the initial series (http://www.spinics.net/lists/linux-sctp/msg05608.html).
Should we consider it again for fixing wrong CRC32c issues in case using a bit in struct sk_buff is not viable?
Quoted 3 lines · Tom Herbert
Return value looks complex. Maybe we should just change skb_csum_*_help to return bool, true of checksum was handled false if not.
These functions can return -EINVAL if skb is a GSO packet, or -ENOMEM if skb_linearize(skb) or pskb_expand_head(skb) fail, or 0. I would preserve the return value of skb_checksum_help() and provide similar range of return values for skb_sctp_csum_help() (also known as skb_crc32c_csum_help()): this can help eventual future attempts to remove skb_warn_bad_offload(). It makes sense to make boolean the return value of skb_csum_hwoffload_help(), since we are using it only for non-GSO packets.
Thank you in advance for the feedbacks,
regards,
--
davide
Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets
Quoted 54 lines · Davide Caratti
Quoted 8 lines · Alexander Duyck
Quoted 6 lines · Davide Caratti
sctp_compute_checksumrequires crc32c symbol (provided by libcrc32c), so it can't be used in net core. Like it has been done previously with other symbols (e.g.ipv6_dst_lookup), introduce a stub structskb_checksum_opsto allow computation of SCTP checksum in net core after sctp.ko (and thus libcrc32c) has been loaded.Quoted 5 lines
At a minimum the name really needs to change. SCTP does not do checksums. It does a CRC, and a CRC is a very different thing. The fact that somebody decided that offloading a CRC could use the same framework is very unfortunate, and your patch descriptions in this whole set are calling out a CRC as checksums which it is not.
hello Alexander,
thank you for contributing to this topic. I see there has been a similar discussion some months ago
(https://www.mail-archive.com/[email protected]/msg94955.html).Quoted 4 lines
I don't want to see anything "checksum" or "csum" related in the naming when it comes to dealing with SCTP unless we absolutely have to have it. So any function names or structures with sctp in the name should call out "crc32" or "crc", please don't use checksum.
Quoted 2 lines · David Laight
Then also change all the places that refer the IP 1's compliment checksum to ipchecksum.
(but crc32 uses a different polynomial than crc32c! :-) ) I understand your concerns, nevertheless we are writing to a member of struct sctphdr whose name is 'checksum' since the earliest introduction of SCTP; moreover, similar terminology ('crc32c checksum') is used throughout all RFC4960. That's why I don't think anybody will be confused by usage of 'csum' or 'checksum' words.
Quoted 5 lines · Tom Herbert
I agree that internal functions to sctp should not refer to checksum, but I think we need to take care to be consistent with any external API (even if somebody made a mistake defining it this way :-) ). As you know the checksum interface must be very precisely defined, there is no leeway for ambiguity.
We can make the new symbols more generic removing 'sctp' from the symbol name, and writing explicitly that skb needs crc32c (rather than skb does not need internet checksum).
Proposal:
we use crc32c, possibly combined with 'csum' or 'checksum', just like it has been done in RFC4960. So, symbol names can be replaced as follows:RFC v2 name | RFC v3 name
-------------------------+-----------------------------
Quoted 8 lines
warn_sctp_csum_update | warn_crc32c_csum_update warn_sctp_csum_combine | warn_crc32c_csum_combine sctp_csum_stub | crc32c_csum_stub sctp_csum_ops | crc32c_csum_ops skb_sctp_csum_help | skb_crc32c_csum_help skb->csum_not_inet | skb->crc32c_csumplease let me know if the proposal can be acceptable from your point of view.
I do like this approach better. You might even take this one step further. You could convert crc32_csum into a 1 bit enum for now. Basically you would use 0 for 1's compliement csum, and 1 to represent a crc32c csum. Then if we end up having to add another bit for something like FCoE in the future it would give us 4 possible checksum types instead of just giving us 1 with a bit mask.
Quoted 79 lines · Tom Herbert
Quoted 5 lines
Unfortunately this potentially pushes the skbuf flags over 32 bits if I count correctly. I suggest that you rename
csum_badtocsum_not_inet. Looks likecsum_badis only set by a grand total of one driver and I don't believe that is enough to justify its existence. It's probably a good time to remove it.you are right: find below the current layout obtained with 'allyesconfig':
short unsigned int queue_mapping; /* 140 2 */ unsigned char __cloned_offset[0]; /* 142 0 */ unsigned char cloned:1; /* 142: 7 1 */ unsigned char nohdr:1; /* 142: 6 1 */ unsigned char fclone:2; /* 142: 4 1 */ unsigned char peeked:1; /* 142: 3 1 */ unsigned char head_frag:1; /* 142: 2 1 */ unsigned char xmit_more:1; /* 142: 1 1 */ unsigned char __unused:1; /* 142: 0 1 *//* XXX 1 byte hole, try to pack */
unsigned int headers_start[0]; /* 144 0 */ unsigned char __pkt_type_offset[0]; /* 144 0 */ unsigned char pkt_type:3; /* 144: 5 1 */<...>
unsigned char ipvs_property:1; /* 147: 7 1 */ unsigned char inner_protocol_type:1; /* 147: 6 1 */ unsigned char remcsum_offload:1; /* 147: 5 1 */ unsigned char offload_fwd_mark:1; /* 147: 4 1 */ unsigned char tc_skip_classify:1; /* 147: 3 1 */ unsigned char tc_at_ingress:1; /* 147: 2 1 */ unsigned char tc_redirected:1; /* 147: 1 1 */ unsigned char tc_from_ingress:1; /* 147: 0 1 */ short unsigned int tc_index; /* 148 2 *//* XXX 2 bytes hole, try to pack */
union {
unsigned int csum; /* 4 */
struct {
short unsigned intcsum_start; /* 152 2 */
short unsigned intcsum_offset; /* 154 2 */
}; /* 4 */
} /* 152 4 */
skb->tc_from_ingressis the last element of the 32 bits starting atskb->pkt_type. There are 16 bits free beforeskb->csum, and 9 free bits beforeskb->pkt_type. I don't think I can easily make room by removing 'csum_bad' as per your suggestion, because it is used by GRO and netfilter code also (see users of__skb_mark_checksum_bad()). So, either I place 'csum_not_inet' in one of the two above intervals (i.e replacing__unusedwithcsum_not_inetAKAcrc32c_csum), or I have to give up the (good) idea of using a bit insk_buff.BTW: unlike what I see with other NICs, using ixgbe driver I don't see corrupted L4 packets, even when SCTP CRC offload is turned off. Looking at the code, I see
ixgbe_tx_csumdoes a simple test to identify SCTP in packets withCHECKSUM_PARTIALand have their checksum resolved by the hardware:switch (skb->csum_offset) { case offsetof(struct tcphdr, check): /* it's TCP */ /* fall-through */ case offsetof(struct udphdr, check) /* it's UDP */ break; case offsetof(struct scphdr, checksum): if (/* an ipv4 or ipv6 header with protocol equal to * IPPOROTO_SCTP is found */) /* it's SCTP */ break; } /* fall through */ default: skb_checksum_help(skb); }
Quoted 4 lines
The above code is functionally similar to what I did in patch 4/5 of the initial series (http://www.spinics.net/lists/linux-sctp/msg05608.html).
Should we consider it again for fixing wrong CRC32c issues in case using a bit in structsk_buffis not viable?
I would say if you can't use an extra bit to indicate the checksum type you probably don't have too much other choice.
As far as the patch you provided I would say it is a good start, but was a bit to aggressive in a few spots. For now we don't have support for offloading crc32c when encapsulating a frame so you don't need to worry about that too much for now. Also as far as the features test you should only need to find that one of the feature bits is set in the list you were testing. What might make sense would be to look into updating can_checksum_protocol to possibly factor in csum_offset when determining if we can offload it or not.
Quoted 20 lines · Tom Herbert
Quoted 3 lines
Return value looks complex. Maybe we should just change skb_csum_*_help to return bool, true of checksum was handled false if not.
These functions can return
-EINVALif skb is a GSO packet, or-ENOMEMifskb_linearize(skb)orpskb_expand_head(skb)fail, or 0. I would preserve the return value ofskb_checksum_help()and provide similar range of return values forskb_sctp_csum_help()(also known asskb_crc32c_csum_help()): this can help eventual future attempts to removeskb_warn_bad_offload(). It makes sense to make boolean the return value ofskb_csum_hwoffload_help(), since we are using it only for non-GSO packets.Thank you in advance for the feedbacks,
regards,
--
davide
Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets
hello Alexander and Tom,
Quoted 7 lines · Alexander Duyck
You might even take this one step
further. You could convertcrc32_csuminto a 1 bit enum for now. Basically you would use 0 for 1's compliement csum, and 1 to represent a crc32c csum. Then if we end up having to add another bit for something like FCoE in the future it would give us 4 possible checksum types instead of just giving us 1 with a bit mask.
<...>
Quoted 2 lines
I would say if you can't use an extra bit to indicate the checksum type you probably don't have too much other choice.
Unluckily, there are no free bits in struct sk_buff (i.e. there is 1 + 8 bits after skb->xmit_more, but its content would be be lost after __copy_skb_header() _ so simply we can't use them).
As soon as two bits in sk_buff are freed, we will be able to rely on the skb metadata, instead of inspecting the packet headers, to understand what algorithm is used to ensure data integrity in the packet.
Quoted 4 lines
As far as the patch you provided I would say it is a good start, but was a bit to aggressive in a few spots. For now we don't have support for offloading crc32c when encapsulating a frame so you don't need to worry about that too much for now.
Ok _ so, skb_csum_hwoffload_help(skb, features) will assume that skb needs crc32c if all the following conditions are met:
- feature bitmask does not have NETIF_F_SCTP_CRC bit set
- skb->csum_offset is equal to 8 (i.e. offsetof(struct sctphdr,checksum)).
- skb is carrying an (outer, non encapsulated) IPv4/IPv6 header with protocol number equal to 132 (i.e. IPPROTO_SCTP)
In any other case, we will compute the internet checksum or do nothing _ just what it's happening right now for non-GSO packets reaching validate_xmit_skb(). I think this implementation can be extended to the FCoE case if needed.
Quoted 5 lines
Also as far as the features test
you should only need to find that one of the feature bits is set in the list you were testing. What might make sense would be to look into updatingcan_checksum_protocolto possibly factor incsum_offsetwhen determining if we can offload it or not.
Looking again at the code, I noticed that the number of test on 'features' bits can be reduced: see below.
can_checksum_protocol() takes an ethertype as parameter, so we would need to invent a non-standardized valure for SCTP. Moreover, it is used in skb_segment() for GSO: so, adding extra CPU cycles would affect performance on a path where the kernel is already showing the right behavior (GSO SCTP packets have their CRC32 computed correctly when sctp_gso_segment() is called).
hello Tom,
Quoted 6 lines
Quoted 6 lines · Tom Herbert
Quoted 4 lines
Return value looks complex. Maybe we should just change skb_csum_*_help to return bool, true of checksum was handled false if not.
Quoted 7 lines
Quoted 7 lines
These functions can return
-EINVALif skb is a GSO packet, or-ENOMEMifskb_linearize(skb)orpskb_expand_head(skb)fail, or 0. I would preserve the return value ofskb_checksum_help()and provide similar range of return values forskb_sctp_csum_help()(also known asskb_crc32c_csum_help()): this can help eventual future attempts to removeskb_warn_bad_offload(). It makes sense to make boolean the return value ofskb_csum_hwoffload_help(), since we are using it only for non-GSO packets.
the above statement is still valid after the body of the function changed. A very small thing: according to the kernel coding style, I should find a 'predicative' name for this function. Something like
skb_can_resolve_partial_csum(),
(which is terrible, I know)
or similar / better.
Please let me know if you think the code below is ok for you. Thank you in advance!
regards,
--
davide
net/core/dev.c +33 -2
@@ -2987,6 +2987,38 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,return skb; } +static bool skb_csum_hwoffload_help (struct sk_buff *skb, +netdev_features_t features) +{ +bool crc32c_csum_hwoff = !!(features &NETIF_F_SCTP_CRC ); +bool inet_csum_hwoff = !!(features &NETIF_F_CSUM_MASK ); +unsigned int offset =0 ; + +if (crc32c_csum_hwoff && inet_csum_hwoff) +return true; + +if (skb->encapsulation || + skb->csum_offset != offsetof(struct sctphdr , checksum)) + goto inet_csum; + +switch (vlan_get_protocol (skb)) { +case ntohs (ETH_P_IP ): +if (ip_hdr (skb)->protocol =IPPROTO_SCTP ) + goto crc32c_csum; +break ; +case ntohs (ETH_P_IPV6 ): +if (ipv6_find_hdr (skb, &offset,IPPROTO_SCTP ,NULL ,NULL ) = +IPPROTO_SCTP ) + goto crc32c_csum; +break ; + } +inet_csum: +return inet_csum_hwoff ? true : !skb_checksum_help (skb); + +crc32c_csum: +return crc32c_csum_hwoff ? true : !skb_crc32c_csum_help (skb); +} +static struct sk_buff *validate_xmit_skb (struct sk_buff *skb,struct net_device *dev) {netdev_features_t features;
@@ -3022,8 +3054,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_deviceelse skb_set_transport_header (skb,skb_checksum_start_offset (skb)); -if (!(features &NETIF_F_CSUM_MASK ) && -skb_checksum_help (skb)) +if (skb_csum_hwoffload_help (skb, features) = false) goto out_kfree_skb; } }
Re: [PATCH RFC net-next v2 1/4] skbuff: add stub to help computing crc32c on SCTP packets
Quoted 26 lines · Davide Caratti
hello Alexander and Tom,
Quoted 7 lines · Alexander Duyck
You might even take this one step
further. You could convertcrc32_csuminto a 1 bit enum for now. Basically you would use 0 for 1's compliement csum, and 1 to represent a crc32c csum. Then if we end up having to add another bit for something like FCoE in the future it would give us 4 possible checksum types instead of just giving us 1 with a bit mask.<...>
Quoted 2 lines
I would say if you can't use an extra bit to indicate the checksum type you probably don't have too much other choice.
Unluckily, there are no free bits in struct
sk_buff(i.e. there is 1 + 8 bits afterskb->xmit_more, but its content would be be lost after__copy_skb_header()_ so simply we can't use them).
As soon as two bits insk_buffare freed, we will be able to rely on the skb metadata, instead of inspecting the packet headers, to understand what algorithm is used to ensure data integrity in the packet.Quoted 4 lines
As far as the patch you provided I would say it is a good start, but was a bit to aggressive in a few spots. For now we don't have support for offloading crc32c when encapsulating a frame so you don't need to worry about that too much for now.
Quoted 7 lines
Ok _ so,
skb_csum_hwoffload_help(skb, features)will assume that skb needs crc32c if all the following conditions are met:
- feature bitmask does not haveNETIF_F_SCTP_CRCbit set
-skb->csum_offsetis equal to 8 (i.e.offsetof(struct sctphdr,checksum)).
- skb is carrying an (outer, non encapsulated) IPv4/IPv6 header with protocol number equal to 132 (i.e.IPPROTO_SCTP)
That's too complicated. Just create a non_ip_csum bit in skbuff. csum_bad can replaced with this I think. If the bit is set then more work can be done to differentiate between alternative checksums.
Tom
Quoted 110 lines
In any other case, we will compute the internet checksum or do nothing _ just what it's happening right now for non-GSO packets reaching
validate_xmit_skb(). I think this implementation can be extended to the FCoE case if needed.Quoted 5 lines
Also as far as the features test
you should only need to find that one of the feature bits is set in the list you were testing. What might make sense would be to look into updatingcan_checksum_protocolto possibly factor incsum_offsetwhen determining if we can offload it or not.Looking again at the code, I noticed that the number of test on 'features' bits can be reduced: see below.
can_checksum_protocol()takes an ethertype as parameter, so we would need to invent a non-standardized valure for SCTP. Moreover, it is used inskb_segment()for GSO: so, adding extra CPU cycles would affect performance on a path where the kernel is already showing the right behavior (GSO SCTP packets have their CRC32 computed correctly whensctp_gso_segment()is called).hello Tom,
Quoted 6 lines
Quoted 6 lines · Tom Herbert
Quoted 4 lines
Return value looks complex. Maybe we should just change skb_csum_*_help to return bool, true of checksum was handled false if not.
Quoted 7 lines
Quoted 7 lines
These functions can return
-EINVALif skb is a GSO packet, or-ENOMEMifskb_linearize(skb)orpskb_expand_head(skb)fail, or 0. I would preserve the return value ofskb_checksum_help()and provide similar range of return values forskb_sctp_csum_help()(also known asskb_crc32c_csum_help()): this can help eventual future attempts to removeskb_warn_bad_offload(). It makes sense to make boolean the return value ofskb_csum_hwoffload_help(), since we are using it only for non-GSO packets.the above statement is still valid after the body of the function changed. A very small thing: according to the kernel coding style, I should find a 'predicative' name for this function. Something like
skb_can_resolve_partial_csum(),(which is terrible, I know)
or similar / better.
Please let me know if you think the code below is ok for you. Thank you in advance!
regards,
--
davidenet/core/dev.c +33
-2@@ -2987,6 +2987,38 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,return skb; } +static bool skb_csum_hwoffload_help (struct sk_buff *skb, +netdev_features_t features) +{ +bool crc32c_csum_hwoff = !!(features &NETIF_F_SCTP_CRC ); +bool inet_csum_hwoff = !!(features &NETIF_F_CSUM_MASK ); +unsigned int offset =0 ; + +if (crc32c_csum_hwoff && inet_csum_hwoff) +return true; + +if (skb->encapsulation || + skb->csum_offset != offsetof(struct sctphdr , checksum)) + goto inet_csum; + +switch (vlan_get_protocol (skb)) { +case ntohs (ETH_P_IP ): +if (ip_hdr (skb)->protocol =IPPROTO_SCTP ) + goto crc32c_csum; +break ; +case ntohs (ETH_P_IPV6 ): +if (ipv6_find_hdr (skb, &offset,IPPROTO_SCTP ,NULL ,NULL ) = +IPPROTO_SCTP ) + goto crc32c_csum; +break ; + } +inet_csum: +return inet_csum_hwoff ? true : !skb_checksum_help (skb); + +crc32c_csum: +return crc32c_csum_hwoff ? true : !skb_crc32c_csum_help (skb); +} +static struct sk_buff *validate_xmit_skb (struct sk_buff *skb,struct net_device *dev) {netdev_features_t features;@@ -3022,8 +3054,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_deviceelse skb_set_transport_header (skb,skb_checksum_start_offset (skb)); -if (!(features &NETIF_F_CSUM_MASK ) && -skb_checksum_help (skb)) +if (skb_csum_hwoffload_help (skb, features) = false) goto out_kfree_skb; } }
v3 cover improve CRC32c in the forwarding path
Quoted 6 lines · Alexander Duyck
You might even take this one step
further. You could convertcrc32_csuminto a 1 bit enum for now. Basically you would use 0 for 1's compliement csum, and 1 to represent a crc32c csum. Then if we end up having to add another bit for something like FCoE in the future it would give us 4 possible checksum types instead of just giving us 1 with a bit mask.
Quoted 3 lines · Tom Herbert
Just create a
non_ip_csumbit in skbuff.csum_badcan replaced with this I think. If the bit is set then more work can be done to differentiate between alternative checksums.
hello Alexander and Tom,
I refreshed the series including your suggestions. Some followups are still possible:
* drivers that parse the packet header to correctly resolve CHECKSUM_PARTIAL (e.g. ixgbe_tx_csum()) can benefit from skb->csum_algo savng some CPU cycles (e.g. avoiding calling ip_hdr(skb)->protocol or ixgbe_ipv6_csum_is_sctp(skb)).
* drivers that call skb_checksum_help() to resolve CHECKSUM_PARTIAL can call skb_crc32c_csum_help (or skb_csum_hwoffload_help(skb, 0)) to avoid wrong CRC on SCTP packets.
thank you in advance for looking at this!
regards,
--
davide
v3:
* review documentation
* include a fix for corrupted SCTP packets in openvswitch datapath
* skb->crc32c_csum renamed in skb->csum_algo and converted to enum
* deprecate skb->csum_bad to free one bit in struct sk_buff
* use 'CRC32c csum' terminology everywhere
RFC PATCH v3 1/7 skbuff: add stub to help computing crc32c on SCTP packets
In reply to Tom Herbertsctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so it can't be used in net core. Like it has been done previously with other symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops to allow computation of crc32c checksum in net core after sctp.ko (and thus libcrc32c) has been loaded.
--- include/linux/skbuff.h | 2 ++ net/core/skbuff.c | 24 ++++++++++++++++++++++++ net/sctp/offload.c | 7 +++++++ 3 files changed, 33 insertions(+)
include/linux/skbuff.h +2 -0
@@ -3126,6 +3126,8 @@ struct skb_checksum_ops {__wsum (*combine)(__wsum csum,__wsum csum2,int offset,int len); }; +extern const struct skb_checksum_ops *crc32c_csum_stub__read_mostly ; +__wsum __skb_checksum (const struct sk_buff *skb,int offset,int len,__wsum csum,const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
net/core/skbuff.c +23 -0
@@ -2242,6 +2242,30 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, }EXPORT_SYMBOL (skb_copy_and_csum_bits); +static __wsum warn_crc32c_csum_update (const void *buff,int len,__wsum sum) +{ +net_warn_ratelimited ( +"%s: attempt to compute crc32c without libcrc32c.ko\n" , + __func__); +return 0 ; +} + +static __wsum warn_crc32c_csum_combine (__wsum csum,__wsum csum2, +int offset,int len) +{ +net_warn_ratelimited ( +"%s: attempt to compute crc32c without libcrc32c.ko\n" , + __func__); +return 0 ; +} + +const struct skb_checksum_ops *crc32c_csum_stub __read_mostly + &(struct skb_checksum_ops) { + .update = warn_crc32c_csum_update, + .combine = warn_crc32c_csum_combine, +}; +EXPORT_SYMBOL (crc32c_csum_stub); +/** * skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy() * @from: source buffer
net/sctp/offload.c +6 -0
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = { }, }; +static const struct skb_checksum_ops *crc32c_csum_ops __read_mostly + &(struct skb_checksum_ops) { + .update = sctp_csum_update, + .combine = sctp_csum_combine, +}; +int __init sctp_offload_init (void ) {int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)if (ret) goto ipv4; + crc32c_csum_stub = crc32c_csum_ops;return ret; ipv4:
Signature · 1 line
2.7.4
RFC PATCH v3 2/7 net: introduce skb_crc32c_csum_help
In reply to Tom Herbertskb_crc32c_csum_help is like skb_checksum_help, but it is designed for checksumming SCTP packets using crc32c (see RFC3309), provided that libcrc32c.ko has been loaded before. In case libcrc32c is not loaded, invoking skb_crc32c_csum_help on a skb results in one the following printouts:
warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.kowarn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko
--- include/linux/netdevice.h | 1 + include/linux/skbuff.h | 3 ++- net/core/dev.c | 40 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+), 1 deletion(-)
include/linux/netdevice.h +1 -0
@@ -3899,6 +3899,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);int dev_get_nest_level (struct net_device *dev);int skb_checksum_help (struct sk_buff *skb); +int skb_crc32c_csum_help (struct sk_buff *skb);struct sk_buff *__skb_gso_segment (struct sk_buff *skb,netdev_features_t features,bool tx_path); struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
include/linux/skbuff.h +2 -1
@@ -193,7 +193,8 @@* accordingly. Note the there is no indication in the skbuff that the * CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports * both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers. +* is configured for a packet presumably by inspecting packet headers; in +* case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack
net/core/dev.c +40 -0
@@ -140,6 +140,7 @@#include <linux/hrtimer.h> #include <linux/netfilter_ingress.h> #include <linux/crash_dump.h> +#include <linux/sctp.h> #include "net-sysfs.h"
@@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb) }EXPORT_SYMBOL (skb_checksum_help); +int skb_crc32c_csum_help (struct sk_buff *skb) +{ +__le32 crc32c_csum; +int ret =0 , offset; + +if (skb->ip_summed !=CHECKSUM_PARTIAL ) + goto out; + +if (unlikely (skb_is_gso (skb))) + goto out; + +/* Before computing a checksum, we should make sure no frag could +* be modified by an external entity : checksum could be wrong. +*/ +if (unlikely (skb_has_shared_frag (skb))) { + ret =__skb_linearize (skb); +if (ret) + goto out; + } + + offset =skb_checksum_start_offset (skb); + crc32c_csum =cpu_to_le32 (~__skb_checksum (skb, offset, + skb->len - offset, ~(__u32 )0 , + crc32c_csum_stub)); + offset += offsetof(struct sctphdr , checksum); +BUG_ON (offset >=skb_headlen (skb)); + +if (skb_cloned (skb) && + !skb_clone_writable (skb, offset +sizeof (__le32))) { + ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); +if (ret) + goto out; + } + *(__le32 *)(skb->data + offset) = crc32c_csum; + skb->ip_summed =CHECKSUM_NONE ; +out: +return ret; +} +__be16 skb_network_protocol (struct sk_buff *skb,int *depth) {__be16 type = skb->protocol;
Signature · 1 line
2.7.4
RFC PATCH v3 3/7 sk_buff: remove support for csum_bad in sk_buff
In reply to Tom HerbertThis bit was introduced with 5a21232983aa ("net: Support for csum_bad in skbuff") to reduce the stack workload when processing RX packets carrying a wrong Internet Checksum. Up to now, only one driver (besides GRO core) are setting it.
The test on NAPI_GRO_CB(skb)->flush in dev_gro_receive() is now done before the test on same_flow, to preserve behavior in case of wrong checksum.
--- drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 2 +- include/linux/netdevice.h | 4 +--- include/linux/skbuff.h | 23 ++--------------------- net/bridge/netfilter/nft_reject_bridge.c | 5 +---- net/core/dev.c | 8 +++----- net/ipv4/netfilter/nf_reject_ipv4.c | 2 +- net/ipv6/netfilter/nf_reject_ipv6.c | 3 --- 7 files changed, 9 insertions(+), 38 deletions(-)
drivers/net/ethernet/aquantia/atlantic/aq_ring.c +1 -1
@@ -222,7 +222,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget) skb->protocol =eth_type_trans (skb, ndev);if (unlikely (buff->is_cso_err)) { ++self->stats.rx.errors; -__skb_mark_checksum_bad (skb); + skb->ip_summed =CHECKSUM_NONE ; }else {if (buff->is_ip_cso) {__skb_incr_checksum_unnecessary (skb);
include/linux/netdevice.h +1 -3
@@ -2547,9 +2547,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)if (__skb_gro_checksum_validate_needed (skb, zero_okay, check)) \ __ret =__skb_gro_checksum_validate_complete (skb, \compute_pseudo (skb, proto)); \ -if (__ret) \ -__skb_mark_checksum_bad (skb); \ -else \ +if (!__ret) \skb_gro_incr_csum_unnecessary (skb); \ __ret; \ })
include/linux/skbuff.h +2 -21
@@ -742,7 +742,7 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 csum_bad:1; + __u8 __unused:1; /* one bit hole */ __u8 dst_pending_confirm:1;#ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -3386,21 +3386,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb) } } -static inline void __skb_mark_checksum_bad (struct sk_buff *skb) -{ -/* Mark current checksum as bad (typically called from GRO -* path). In the case that ip_summed is CHECKSUM_NONE -* this must be the first checksum encountered in the packet. -* When ip_summed is CHECKSUM_UNNECESSARY, this is the first -* checksum after the last one validated. For UDP, a zero -* checksum can not be marked as bad. -*/ - -if (skb->ip_summed =CHECKSUM_NONE || - skb->ip_summed =CHECKSUM_UNNECESSARY ) - skb->csum_bad =1 ; -} -/* Check if we need to perform checksum complete validation. * * Returns true if checksum complete is needed, false otherwise
@@ -3454,9 +3439,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb, skb->csum_valid =1 ;return 0 ; } - }else if (skb->csum_bad) { -/* ip_summed = CHECKSUM_NONE in this case */ -return (__force __sum16 )1 ; } skb->csum = psum;
@@ -3516,8 +3498,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)static inline bool __skb_checksum_convert_check (struct sk_buff *skb) { -return (skb->ip_summed =CHECKSUM_NONE && - skb->csum_valid && !skb->csum_bad); +return (skb->ip_summed =CHECKSUM_NONE && skb->csum_valid); } static inline void __skb_checksum_convert(struct sk_buff *skb,
net/bridge/netfilter/nft_reject_bridge.c +1 -4
@@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,__wsum csum;u8 proto; -if (oldskb->csum_bad || !nft_bridge_iphdr_validate (oldskb)) +if (!nft_bridge_iphdr_validate (oldskb))return ;/* IP header checks: fragment. */
@@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)__be16 fo;u8 proto = ip6h->nexthdr; -if (skb->csum_bad) -return false; -if (skb_csum_unnecessary (skb))return true;
net/core/dev.c +3 -5
@@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buffif (!(skb->dev->features &NETIF_F_GRO )) goto normal; -if (skb->csum_bad) - goto normal; -gro_list_prepare (napi, skb);rcu_read_lock ();
@@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff napi->gro_count--; } +if (NAPI_GRO_CB (skb)->flush) + goto normal; +if (same_flow) goto ok; -if (NAPI_GRO_CB (skb)->flush) - goto normal;if (unlikely (napi->gro_count >=MAX_GRO_SKBS )) {struct sk_buff *nskb = napi->gro_list;
net/ipv4/netfilter/nf_reject_ipv4.c +1 -1
@@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)struct iphdr *iph =ip_hdr (skb_in);u8 proto; -if (skb_in->csum_bad || iph->frag_off &htons (IP_OFFSET )) +if (iph->frag_off &htons (IP_OFFSET ))return ;if (skb_csum_unnecessary (skb_in)) {
net/ipv6/netfilter/nf_reject_ipv6.c +0 -3
@@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)__be16 fo;u8 proto; -if (skb->csum_bad) -return false; -if (skb_csum_unnecessary (skb))return true;
Signature · 1 line
2.7.4
RFC PATCH v3 4/7 net: use skb->csum_algo to identify packets needing crc32c
In reply to Tom Herbertskb->csum_algo carries the indication on which algorithm is needed to compute checksum on skb in the transmit path, when skb->ip_summed is equal to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been yet written in L4 header, skb->csum_algo is assigned to CRC32C_CHECKSUM. In any other case, skb->csum_algo is set to INTERNET_CHECKSUM.
--- include/linux/skbuff.h | 28 ++++++++++++++++++++-------- net/core/dev.c | 2 +- net/netfilter/ipvs/ip_vs_proto_sctp.c | 2 +- net/netfilter/nf_nat_proto_sctp.c | 2 +- net/sched/act_csum.c | 2 +- net/sctp/offload.c | 2 +- net/sctp/output.c | 3 ++- 7 files changed, 27 insertions(+), 14 deletions(-)
include/linux/skbuff.h +20 -8
@@ -189,12 +189,13 @@* * NETIF_F_SCTP_CRC - This feature indicates that a device is capable of * offloading the SCTP CRC in a packet. To perform this offload the stack -* will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset -* accordingly. Note the there is no indication in the skbuff that the -* CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports -* both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers; in -* case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets. +* will set set csum_start and csum_offset accordingly, set ip_summed to +* CHECKSUM_PARTIAL and set csum_algo to CRC32C_CHECKSUM, to provide an +* indication in the skbuff that the CHECKSUM_PARTIAL refers to CRC32c. +* A driver that supports both IP checksum offload and SCTP CRC32c offload +* must verify which offload is configured for a packet by testing the +* value of skb->csum_algo; skb_crc32c_csum_help is provided to resolve +* CHECKSUM_PARTIAL on skbs where csum_algo is CRC32C_CHECKSUM. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack
@@ -614,6 +615,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,* @wifi_acked_valid: wifi_acked was set * @wifi_acked: whether frame was acked on wifi or not * @no_fcs: Request NIC to treat last 4 bytes as Ethernet FCS +* @csum_algo: algorithm used to compute checksum * @dst_pending_confirm: need to confirm neighbour * @napi_id: id of the NAPI struct this skb came from * @secmark: security marking
@@ -742,8 +744,10 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 __unused:1; /* one bit hole */ - +enum { +INTERNET_CHECKSUM =0 , +CRC32C_CHECKSUM , + } csum_algo:1; __u8 dst_pending_confirm:1;#ifdef CONFIG_IPV6_NDISC_NODETYPE __u8 ndisc_nodetype:2;
@@ -3129,6 +3133,14 @@ struct skb_checksum_ops {extern const struct skb_checksum_ops *crc32c_csum_stub__read_mostly ; +static inline void skb_set_crc32c_ipsummed (struct sk_buff *skb, +const u8 ip_summed) +{ + skb->csum_algo = ip_summed =CHECKSUM_PARTIAL ?CRC32C_CHECKSUM : +INTERNET_CHECKSUM ; + skb->ip_summed = ip_summed; +} +__wsum __skb_checksum (const struct sk_buff *skb,int offset,int len,__wsum csum,const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
net/core/dev.c +1 -1
@@ -2641,7 +2641,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb) goto out; } *(__le32 *)(skb->data + offset) = crc32c_csum; - skb->ip_summed =CHECKSUM_NONE ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_NONE ); out:return ret; }
net/netfilter/ipvs/ip_vs_proto_sctp.c +1 -1
@@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, unsigned int sctphoff) { sctph->checksum =sctp_compute_cksum (skb, sctphoff); - skb->ip_summed =CHECKSUM_UNNECESSARY ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_UNNECESSARY ); } static int
net/netfilter/nf_nat_proto_sctp.c +1 -1
@@ -60,7 +60,7 @@ sctp_manip_pkt(struct sk_buff *skb,if (skb->ip_summed !=CHECKSUM_PARTIAL ) { hdr->checksum =sctp_compute_cksum (skb, hdroff); - skb->ip_summed =CHECKSUM_NONE ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_NONE ); }return true;
net/sched/act_csum.c +1 -1
@@ -349,7 +349,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl, sctph->checksum =sctp_compute_cksum (skb,skb_network_offset (skb) + ihl); - skb->ip_summed =CHECKSUM_NONE ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_NONE );return 1 ; }
net/sctp/offload.c +1 -1
@@ -34,7 +34,7 @@static __le32 sctp_gso_make_checksum (struct sk_buff *skb) { - skb->ip_summed =CHECKSUM_NONE ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_NONE );return sctp_compute_cksum (skb,skb_transport_offset (skb)); }
net/sctp/output.c +2 -1
@@ -524,10 +524,11 @@ static int sctp_packet_pack(struct sctp_packet *packet,struct sctphdr *sh (struct sctphdr *)skb_transport_header (head); +skb_set_crc32c_ipsummed (head,CHECKSUM_NONE ); sh->checksum =sctp_compute_cksum (head,0 ); }else { chksum: - head->ip_summed =CHECKSUM_PARTIAL ; +skb_set_crc32c_ipsummed (head,CHECKSUM_PARTIAL ); head->csum_start =skb_transport_header (head) - head->head; head->csum_offset = offsetof(struct sctphdr , checksum); }
Signature · 1 line
2.7.4
Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c
Quoted 52 lines · Davide Caratti
skb->csum_algocarries the indication on which algorithm is needed to compute checksum on skb in the transmit path, whenskb->ip_summedis equal toCHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been yet written in L4 header,skb->csum_algois assigned toCRC32C_CHECKSUM. In any other case,skb->csum_algois set toINTERNET_CHECKSUM.Suggested-by Tom Herbert <[email protected]>Signed-off-by Davide Caratti <[email protected]>--- include/linux/skbuff.h | 28 ++++++++++++++++++++-------- net/core/dev.c | 2 +- net/netfilter/ipvs/ip_vs_proto_sctp.c | 2 +- net/netfilter/nf_nat_proto_sctp.c | 2 +- net/sched/act_csum.c | 2 +- net/sctp/offload.c | 2 +- net/sctp/output.c | 3 ++- 7 files changed, 27 insertions(+), 14 deletions(-)include/linux/skbuff.h +8
-6@@ -189,12 +189,13 @@* * NETIF_F_SCTP_CRC - This feature indicates that a device is capable of * offloading the SCTP CRC in a packet. To perform this offload the stack -* will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset -* accordingly. Note the there is no indication in the skbuff that the -* CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports -* both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers; in -* case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets. +* will set set csum_start and csum_offset accordingly, set ip_summed to +* CHECKSUM_PARTIAL and set csum_algo to CRC32C_CHECKSUM, to provide an +* indication in the skbuff that the CHECKSUM_PARTIAL refers to CRC32c. +* A driver that supports both IP checksum offload and SCTP CRC32c offload +* must verify which offload is configured for a packet by testing the +* value of skb->csum_algo; skb_crc32c_csum_help is provided to resolve +* CHECKSUM_PARTIAL on skbs where csum_algo is CRC32C_CHECKSUM. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack @@ -614,6 +615,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,* @wifi_acked_valid: wifi_acked was set * @wifi_acked: whether frame was acked on wifi or not * @no_fcs: Request NIC to treat last 4 bytes as Ethernet FCS +* @csum_algo: algorithm used to compute checksum * @dst_pending_confirm: need to confirm neighbour * @napi_id: id of the NAPI struct this skb came from * @secmark: security marking
include/linux/skbuff.h struct sk_buff { · line 750
Quoted 9 lines
include/linux/skbuff.h +4
-2@@ -742,8 +744,10 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 __unused:1; /* one bit hole */ - +enum { +INTERNET_CHECKSUM =0 , +CRC32C_CHECKSUM , + } csum_algo:1;
I am worried this opens the door to a new open ended functionality that will be rarely used in practice. Checksum offload is pervasive, CRC offload is still a very narrow use case. Adding yet more CRC/checksum variants will need more bits. It may be sufficient for now just to make this a single bit which indicates "ones' checksum" or indicates "other". In this case of "other" we need some analysis so determine which checksum it is, this might be something that flow dissector could support.
include/linux/skbuff.h struct skb_checksum_ops { · line 3141
Quoted 13 lines
include/linux/skbuff.h +6
-0__u8 dst_pending_confirm:1;#ifdef CONFIG_IPV6_NDISC_NODETYPE __u8 ndisc_nodetype:2;@@ -3129,6 +3133,14 @@ struct skb_checksum_ops {extern const struct skb_checksum_ops *crc32c_csum_stub__read_mostly ; +static inline void skb_set_crc32c_ipsummed (struct sk_buff *skb, +const u8 ip_summed) +{ + skb->csum_algo = ip_summed =CHECKSUM_PARTIAL ?CRC32C_CHECKSUM : +INTERNET_CHECKSUM ; + skb->ip_summed = ip_summed;
This seems odd to me. skb->csum_algo and skb->ip_summed always end up having the same value.
Quoted 23 lines
include/linux/skbuff.h +2
-0+} +__wsum __skb_checksum (const struct sk_buff *skb,int offset,int len,__wsum csum,const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,net/core/dev.c +1
-1@@ -2641,7 +2641,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb) goto out; } *(__le32 *)(skb->data + offset) = crc32c_csum; - skb->ip_summed =CHECKSUM_NONE ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_NONE ); out:return ret; }net/netfilter/ipvs/ip_vs_proto_sctp.c +0
-0
net/netfilter/ipvs/ip_vs_proto_sctp.c static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, · line 84
Quoted 5 lines
net/netfilter/ipvs/ip_vs_proto_sctp.c +1
-1@@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, unsigned int sctphoff) { sctph->checksum =sctp_compute_cksum (skb, sctphoff); - skb->ip_summed =CHECKSUM_UNNECESSARY ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_UNNECESSARY );
The old code is better. CHECKSUM_UNNECESSARY already applies to non IP checksums. There is nothing special about crc32 in this regard and skb->csum_algo should only be valid when skb->ip_summed = CHECKSUM_PARTIAL so no need to set it here. This point should also be in documentation.
Quoted 61 lines
net/netfilter/ipvs/ip_vs_proto_sctp.c +0
-0} static intnet/netfilter/nf_nat_proto_sctp.c +1
-1@@ -60,7 +60,7 @@ sctp_manip_pkt(struct sk_buff *skb,if (skb->ip_summed !=CHECKSUM_PARTIAL ) { hdr->checksum =sctp_compute_cksum (skb, hdroff); - skb->ip_summed =CHECKSUM_NONE ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_NONE ); }return true;net/sched/act_csum.c +1
-1@@ -349,7 +349,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl, sctph->checksum =sctp_compute_cksum (skb,skb_network_offset (skb) + ihl); - skb->ip_summed =CHECKSUM_NONE ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_NONE );return 1 ; }net/sctp/offload.c +1
-1@@ -34,7 +34,7 @@static __le32 sctp_gso_make_checksum (struct sk_buff *skb) { - skb->ip_summed =CHECKSUM_NONE ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_NONE );return sctp_compute_cksum (skb,skb_transport_offset (skb)); }net/sctp/output.c +2
-2@@ -524,10 +524,11 @@ static int sctp_packet_pack(struct sctp_packet *packet, struct sctphdr *sh > (struct sctphdr *)skb_transport_header(head); +skb_set_crc32c_ipsummed (head,CHECKSUM_NONE ); sh->checksum =sctp_compute_cksum (head,0 ); }else { chksum: - head->ip_summed =CHECKSUM_PARTIAL ; +skb_set_crc32c_ipsummed (head,CHECKSUM_PARTIAL ); head->csum_start =skb_transport_header (head) - head->head; head->csum_offset = offsetof(struct sctphdr , checksum); } --2.7.4
Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c
hello Tom,
Quoted 15 lines · Tom Herbert
include/linux/skbuff.h struct sk_buff { · line 750
Quoted 10 lines · Davide Caratti
include/linux/skbuff.h +4
-2@@ -742,8 +744,10 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 __unused:1; /* one bit hole */ - +enum { +INTERNET_CHECKSUM =0 , +CRC32C_CHECKSUM , + } csum_algo:1;I am worried this opens the door to a new open ended functionality that will be rarely used in practice. Checksum offload is pervasive, CRC offload is still a very narrow use case.
thank you for the prompt response. I thought there was a silent agreement on that - Alexander proposed usage of an enum bitfield to be ready for FCoE (and I'm not against it, unless I have to find a second free bit in struct sk_buff :-) ). But maybe I'm misunderstanding your concern: is it the name of the variable, (csum_algo instead of crc32c_csum), or the usage of enum bitfield (or both?) ?
Quoted 6 lines · Tom Herbert
Adding yet more
CRC/checksum variants will need more bits. It may be sufficient for now just to make this a single bit which indicates "ones' checksum" or indicates "other". In this case of "other" we need some analysis so determine which checksum it is, this might be something that flow dissector could support.
... which is my intent: by the way, from my perspective, we don't need more than 1 bit to extend the functionality. While reviewing my code, I was also considering extending the witdth of skb->ip_summed from 2 to 3 bit, so that it was possible to
#define
CRC32C_PARTIAL <- for SCTPCRC_PARTIAL <- for FCoECHECKSUM_PARTIAL <- for everything else
It's conceptually the same thing, and the free bit is used more efficiently. But then I would need to check all places where CHECKSUM_PARTIAL is used in assignments and test: so, I told myself it's not worth doing it until somebody requests to extend this functionality to FCoE.
Quoted 4 lines
Quoted 4 lines
include/linux/skbuff.h +0
-0@@ -3129,6 +3133,14 @@ struct skb_checksum_ops {extern const struct skb_checksum_ops *crc32c_csum_stub__read_mostly ;
Quoted 9 lines
include/linux/skbuff.h struct skb_checksum_ops { · line 3141
Quoted 6 lines
include/linux/skbuff.h +6
-0+static inline void skb_set_crc32c_ipsummed (struct sk_buff *skb, +const u8 ip_summed) +{ + skb->csum_algo = ip_summed =CHECKSUM_PARTIAL ?CRC32C_CHECKSUM : +INTERNET_CHECKSUM ; + skb->ip_summed = ip_summed;This seems odd to me.
skb->csum_algoandskb->ip_summedalways end up having the same value.
this is accidentally true for CHEKSUM_NONE and CHECKSUM_PARTIAL, and only if skb carries a SCTP packet. This was my intent:
ip_summed (2 bit) | csum_algo (1 bit)
---------------------------------------+-------------------
CHEKSUM_NONE = 0 | INTERNET_CHECKSUM = 0 CHECKSUM_PARTIAL = 1 | CRC32C_CHECKSUM = 1 CHECKSUM_COMPLETE = 2 (not applicable) | INTERNET_CHECKSUM = 0 (don't care) CHECKSUM_UNNECESSARY = 3 | INTERNET_CHECKSUM = 0
I can do this in a more explicit way, changing the prototype to
static inline void skb_set_crc32c_ipsummed(struct sk_buff *skb,
const u8 ip_summed, const u8 csum_algo)
(with the advantage of saving a test on the value of ip_summed). Find in the comment below the reason why I'm clearing csum_algo every time the SCTP CRC32c is computed.
Quoted 6 lines
Quoted 6 lines
net/netfilter/ipvs/ip_vs_proto_sctp.c +0
-0@@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, unsigned int sctphoff) { sctph->checksum =sctp_compute_cksum (skb, sctphoff);
Quoted 8 lines
net/netfilter/ipvs/ip_vs_proto_sctp.c static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, · line 84
Quoted 2 lines
net/netfilter/ipvs/ip_vs_proto_sctp.c +1
-1- skb->ip_summed =CHECKSUM_UNNECESSARY ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_UNNECESSARY );The old code is better.
CHECKSUM_UNNECESSARYalready applies to non IP checksums. There is nothing special about crc32 in this regard andskb->csum_algoshould only be valid whenskb->ip_summed=CHECKSUM_PARTIALso no need to set it here. This point should also be in documentation.
In my understanding, csum_algo needs to be set to INTERNET_CHECKSUM after the CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it is encapsulated in a UDP frame), there is the possibility for skb->ip_summed to become CHECKSUM_PARTIAL again. So, to ensure that skb_checksum_help() and not skb_crc32c_help() will be called, csum_algo must be 0.
To minimize the impact of the patch, I substituted all assignments of skb->ip_summed, done by SCTP-related code, with calls to skb_set_crc32c_ipsummed(). The alternative is to explicitly set csum_algo to 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?
thank you in advance,
regards
--
davide
Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c
Quoted 34 lines · Davide Caratti
hello Tom,
Quoted 15 lines · Tom Herbert
include/linux/skbuff.h struct sk_buff { · line 750
Quoted 10 lines · Davide Caratti
include/linux/skbuff.h +4
-2@@ -742,8 +744,10 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 __unused:1; /* one bit hole */ - +enum { +INTERNET_CHECKSUM =0 , +CRC32C_CHECKSUM , + } csum_algo:1;I am worried this opens the door to a new open ended functionality that will be rarely used in practice. Checksum offload is pervasive, CRC offload is still a very narrow use case.
thank you for the prompt response. I thought there was a silent agreement on that - Alexander proposed usage of an enum bitfield to be ready for FCoE (and I'm not against it, unless I have to find a second free bit in struct
sk_buff:-) ). But maybe I'm misunderstanding your
concern: is it the name of the variable, (csum_algoinstead ofcrc32c_csum), or the usage of enum bitfield (or both?) ?Quoted 6 lines · Tom Herbert
Adding yet more
CRC/checksum variants will need more bits. It may be sufficient for now just to make this a single bit which indicates "ones' checksum" or indicates "other". In this case of "other" we need some analysis so determine which checksum it is, this might be something that flow dissector could support.
Quoted 5 lines
... which is my intent: by the way, from my perspective, we don't need more than 1 bit to extend the functionality. While reviewing my code, I was also considering extending the witdth of
skb->ip_summedfrom 2 to 3 bit, so that it was possible to
Maybe just call it csum_not_ip then. Then just do "if (unlikely(skb->csum_not_ip)) ..."
Quoted 6 lines
#define
CRC32C_PARTIAL<- for SCTPCRC_PARTIAL<- for FCoECHECKSUM_PARTIAL<- for everything else
Quoted 6 lines
It's conceptually the same thing, and the free bit is used more efficiently. But then I would need to check all places where
CHECKSUM_PARTIALis used in assignments and test: so, I told myself it's not worth doing it until somebody requests to extend this functionality to FCoE.
I've thought about extending ip_summed before with something like csum_invalid. I think it opens up a can of worms since ip_summed is being used in so many places already and the semantics of each value have to be extremely well defined for the whole system (this is one place where we can't tolerate any ambiguity at all and it everything needs to be clearly documented).
Quoted 49 lines
Quoted 4 lines
Quoted 4 lines
include/linux/skbuff.h +0
-0@@ -3129,6 +3133,14 @@ struct skb_checksum_ops {extern const struct skb_checksum_ops *crc32c_csum_stub__read_mostly ;Quoted 9 lines
include/linux/skbuff.h struct skb_checksum_ops { · line 3141
Quoted 6 lines
include/linux/skbuff.h +6
-0+static inline void skb_set_crc32c_ipsummed (struct sk_buff *skb, +const u8 ip_summed) +{ + skb->csum_algo = ip_summed =CHECKSUM_PARTIAL ?CRC32C_CHECKSUM : +INTERNET_CHECKSUM ; + skb->ip_summed = ip_summed;This seems odd to me.
skb->csum_algoandskb->ip_summedalways end up having the same value.this is accidentally true for
CHEKSUM_NONEandCHECKSUM_PARTIAL, and only if skb carries a SCTP packet. This was my intent:
ip_summed(2 bit) |csum_algo(1 bit)
---------------------------------------+-------------------CHEKSUM_NONE = 0 | INTERNET_CHECKSUM = 0 CHECKSUM_PARTIAL = 1 | CRC32C_CHECKSUM = 1 CHECKSUM_COMPLETE = 2 (not applicable) | INTERNET_CHECKSUM = 0 (don't care) CHECKSUM_UNNECESSARY = 3 | INTERNET_CHECKSUM = 0I can do this in a more explicit way, changing the prototype to
static inline void skb_set_crc32c_ipsummed(struct
sk_buff*skb,
const u8ip_summed, const u8csum_algo)(with the advantage of saving a test on the value of
ip_summed). Find in the comment below the reason why I'm clearingcsum_algoevery time the SCTP CRC32c is computed.Quoted 6 lines
Quoted 6 lines
net/netfilter/ipvs/ip_vs_proto_sctp.c +0
-0@@ -81,7 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, unsigned int sctphoff) { sctph->checksum =sctp_compute_cksum (skb, sctphoff);Quoted 8 lines
net/netfilter/ipvs/ip_vs_proto_sctp.c static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, · line 84
Quoted 2 lines
net/netfilter/ipvs/ip_vs_proto_sctp.c +1
-1- skb->ip_summed =CHECKSUM_UNNECESSARY ; +skb_set_crc32c_ipsummed (skb,CHECKSUM_UNNECESSARY );The old code is better.
CHECKSUM_UNNECESSARYalready applies to non IP checksums. There is nothing special about crc32 in this regard andskb->csum_algoshould only be valid whenskb->ip_summed=CHECKSUM_PARTIALso no need to set it here. This point should also be in documentation.
Quoted 6 lines
In my understanding,
csum_algoneeds to be set toINTERNET_CHECKSUMafter the CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it is encapsulated in a UDP frame), there is the possibility forskb->ip_summedto becomeCHECKSUM_PARTIALagain. So, to ensure thatskb_checksum_help()and notskb_crc32c_help()will be called,csum_algomust be 0.
ip_summed should no longer be CHECKSUM_PARTIAL with CRC32c is computed.
Quoted 4 lines
To minimize the impact of the patch, I substituted all assignments of
skb->ip_summed, done by SCTP-related code, with calls toskb_set_crc32c_ipsummed(). The alternative is to explicitly setcsum_algoto 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?
No, like I said the only case where this new bit is relevant is when CHECKSUM_PARTIAL for a CRC is being done. When it's set for offloading sctp crc it must be set. When CRC is resolved, in the helper for instance, it must be cleared. If these rules are properly followed then the bit will be zero in all other cases without needing any additional work or conditionals.
Tom
Quoted 5 lines
thank you in advance,
regards
--
davide
Re: [PATCH RFC net-next v3 4/7] net: use skb->csum_algo to identify packets needing crc32c
thank you,
Quoted 2 lines · Tom Herbert
Maybe just call it
csum_not_ipthen. Then just do "if (unlikely(skb->csum_not_ip)) ..."
OK, I will rename the bit, avoid the enum and use the 'unlikely'. Up to now, this series uses the bit for SCTP only and leaves unmodified behavior of offloaded FCoE frames: please let me know if you disagree on that.
Quoted 8 lines · Tom Herbert
Quoted 5 lines · Davide Caratti
In my understanding,
csum_algoneeds to be set toINTERNET_CHECKSUMafter the CRC32c is computed. Otherwise, after subsequent operation on the skb (e.g. it is encapsulated in a UDP frame), there is the possibility forskb->ip_summedto becomeCHECKSUM_PARTIALagain. So, to ensure thatskb_checksum_help()and notskb_crc32c_help()will be called,csum_algomust be 0.
ip_summedshould no longer beCHECKSUM_PARTIALwith CRC32c is computed.
Even though it's uncommon, skb->ip_summed can become CHECKSUM_PARTIAL again after the CRC32c is computed and CHECKSUM_NONE is set: for example, when a veth and a vxlan with UDP checksums are enslaved to the same bridge, and the NIC below vxlan has no checksumming capabilities. Here, validate_xmit_skb is called three times on the same skb (see perf output at the bottom):
* before transmission on the veth: here ip_summed is CHECKSUM_PARTIAL, but the device supports CRC32c offload so the skb is (correctly) untouched.
* before vxlan encapsulation: here ip_summed is CHECKSUM_PARTIAL, skb->csum_not_inet is 1 and NETIF_F_SCTP_CRC is not set. Here, skb_csum_hwoffload_help() correctly fills the CRC32c and assigns ip_summed to CHECKSUM_NONE.
* before transmission on the NIC: ip_summed is CHECKSUM_PARTIAL again (because udp_set_csum changed csum_start and csum_offset to point to the tunnel UDP header). No bit in NETIF_F_HW_CSUM is set: if skb->csum_not_inet is still 1, the helper (wrongly) computes CRC32c again, thus corrupting the outer UDP transport header. On the contrary, if skb->csum_not_inet is 0, skb_checksum_help() correctly resolves CHECKSUM_PARTIAL.
To avoid this problem, skb->csum_not_inet must be assigned to 0 every time the CHECKSUM_PARTIAL is resolved on skb carrying SCTP packets.
Quoted 10 lines
Quoted 3 lines
To minimize the impact of the patch, I substituted all assignments of
skb->ip_summed, done by SCTP-related code, with calls toskb_set_crc32c_ipsummed(). The alternative is to explicitly setcsum_algoto 0 (INTERNET_CHECKSUM) in SCTP-related code. Do you agree?No, like I said the only case where this new bit is relevant is when
CHECKSUM_PARTIALfor a CRC is being done. When it's set for offloading sctp crc it must be set. When CRC is resolved, in the helper for instance, it must be cleared. If these rules are properly followed then the bit will be zero in all other cases without needing any additional work or conditionals.
At a minimum, this csum_not_inet bit needs to be cleared in three places:
1) in skb_crc32c_csum_help, to fix scenarios like veth->bridge->vxlan->NIC above.
2) in sctp_gso_make_checksum, a SCTP GSO packet is segmented and CRC32c is written on each segment. skb->ip_summed transitions from CHECKSUM_PARTIAL to CHECKSUM_NONE.
3) in act_csum, because TC action mangling the packet are called before validate_xmit_skb().
It is not necessary to do it in netfilter NAT (even it is harmless), because SCTP packets having CHECKSUM_PARTIAL are not resolved (since commit 3189a290f98d "netfilter: nat: skip checksum on offload SCTP packets"). And it should be not needed in IPVS code, because ip_summed is set to CHECKSUM_UNNECESSARY, so skb is not going to be checksummed anymore.
thank you in advance for the feedback!
regards,
--
davide
scenario:
vethA --> vethB --> bridge --> vxlan encaps --> NIC
# ./perf probe -k vmlinux --add \ "skb_csum_hwoffload_help csum_offset=skb->csum_offset ip_summed=skb->ip_summed:b2@7/32 skb=skb" # ./perf record -e probe:skb_csum_hwoffload_help -aR -- ./scenario-vxlan.sh
# ./perf script <....> ncat 7577 [000] 22056.548907: probe:skb_csum_hwoffload_help: (ffffffff8162a6f0) csum_offset=8 ip_summed=1 skb=0xffff880106f6bd00 ncat 7577 [000] 22056.548915: probe:skb_csum_hwoffload_help: (ffffffff8162a6f0) csum_offset=8 ip_summed=1 skb=0xffff880106f6bd00 ncat 7577 [000] 22056.548917: probe:skb_csum_hwoffload_help: (ffffffff8162a6f0) csum_offset=6 ip_summed=1 skb=0xffff880106f6bd00 <....>
v4 cover net: improve support for SCTP checksums
In reply to Tom Herberthello Tom,
Quoted 2 lines · Tom Herbert
maybe just call it
csum_not_ipthen. Then just do "if (unlikely(skb->csum_not_ip)) ..."
Ok, done. V4 uses this bit for SCTP only and leaves unmodified behavior when offloaded FCoE frames are processed. Further work is still possible to extend this fix for FCoE, if needed, either by using additional sk_buff bits, or using skb->csum_not_ip and use other data (e.g. skb->csum_offset) to distinguish SCTP from FCoE.
Quoted 4 lines
the only case where this new bit is relevant is when
CHECKSUM_PARTIALfor a CRC is being done. When it's set for offloading sctp crc it must be set. When CRC is resolved, in the helper for instance, it must be cleared.
in V4 the bit is set when SCTP packets with offloaded checksum are generated; the bit is cleared when CRC32c is resolved for such packets (i.e. skb->ip_summed transitions from CHECKSUM_PARTIAL to CHECKSUM_NONE).
Any feedbacks are appreciated!
thank you in advance,
--
davide
Davide Caratti (7):
skbuff: add stub to help computing crc32c on SCTP packets
net: introduce skb_crc32c_csum_help
sk_buff: remove support for csum_bad in sk_buff
net: use skb->csum_not_inet to identify packets needing crc32c
net: more accurate checksumming in validate_xmit_skb()
openvswitch: more accurate checksumming in queue_userspace_packet() sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}
Documentation/networking/checksum-offloads.txt | 11 +++-- drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 2 +- include/linux/netdevice.h | 8 +-- include/linux/skbuff.h | 58 +++++++++------------- net/bridge/netfilter/nft_reject_bridge.c | 5 +- net/core/dev.c | 63 +++++++++++++++++++++--- net/core/skbuff.c | 24 +++++++++ net/ipv4/netfilter/nf_reject_ipv4.c | 2 +- net/ipv6/netfilter/nf_reject_ipv6.c | 3 -- net/openvswitch/datapath.c | 2 +- net/sched/act_csum.c | 1 + net/sctp/offload.c | 8 +++ net/sctp/output.c | 1 + 13 files changed, 128 insertions(+), 60 deletions(-)
Signature · 1 line
2.7.4
Marcelo Ricardo Leitner
maintainerQuoted 27 lines · Davide Caratti
hello Tom,
Quoted 2 lines · Tom Herbert
maybe just call it
csum_not_ipthen. Then just do "if (unlikely(skb->csum_not_ip)) ..."Ok, done. V4 uses this bit for SCTP only and leaves unmodified behavior when offloaded FCoE frames are processed. Further work is still possible to extend this fix for FCoE, if needed, either by using additional
sk_buffbits, or usingskb->csum_not_ipand use other data (e.g.skb->csum_offset) to distinguish SCTP from FCoE.Quoted 4 lines
the only case where this new bit is relevant is when
CHECKSUM_PARTIALfor a CRC is being done. When it's set for offloading sctp crc it must be set. When CRC is resolved, in the helper for instance, it must be cleared.in V4 the bit is set when SCTP packets with offloaded checksum are generated; the bit is cleared when CRC32c is resolved for such packets (i.e.
skb->ip_summedtransitions fromCHECKSUM_PARTIALtoCHECKSUM_NONE).Any feedbacks are appreciated!
thank you in advance,
--
davide
Quoted 8 lines
Davide Caratti (7):
skbuff: add stub to help computing crc32c on SCTP packets
net: introduceskb_crc32c_csum_help
sk_buff: remove support forcsum_badinsk_buff
net: useskb->csum_not_inetto identify packets needing crc32c
net: more accurate checksumming invalidate_xmit_skb()
openvswitch: more accurate checksumming inqueue_userspace_packet()sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}
Other than the comments I did on patch 2, this series LGTM.
Quoted 24 lines
Documentation/networking/checksum-offloads.txt | 11 +++-- drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 2 +- include/linux/netdevice.h | 8 +-- include/linux/skbuff.h | 58 +++++++++------------- net/bridge/netfilter/nft_reject_bridge.c | 5 +- net/core/dev.c | 63 +++++++++++++++++++++--- net/core/skbuff.c | 24 +++++++++ net/ipv4/netfilter/nf_reject_ipv4.c | 2 +- net/ipv6/netfilter/nf_reject_ipv6.c | 3 -- net/openvswitch/datapath.c | 2 +- net/sched/act_csum.c | 1 + net/sctp/offload.c | 8 +++ net/sctp/output.c | 1 + 13 files changed, 128 insertions(+), 60 deletions(-)Signature · 6 lines
2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
RFC PATCH v4 1/7 skbuff: add stub to help computing crc32c on SCTP packets
In reply to Tom Herbertsctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so it can't be used in net core. Like it has been done previously with other symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops to allow computation of crc32c checksum in net core after sctp.ko (and thus libcrc32c) has been loaded.
--- include/linux/skbuff.h | 2 ++ net/core/skbuff.c | 24 ++++++++++++++++++++++++ net/sctp/offload.c | 7 +++++++ 3 files changed, 33 insertions(+)
include/linux/skbuff.h +2 -0
@@ -3127,6 +3127,8 @@ struct skb_checksum_ops {__wsum (*combine)(__wsum csum,__wsum csum2,int offset,int len); }; +extern const struct skb_checksum_ops *crc32c_csum_stub__read_mostly ; +__wsum __skb_checksum (const struct sk_buff *skb,int offset,int len,__wsum csum,const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
net/core/skbuff.c +23 -0
@@ -2242,6 +2242,30 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, }EXPORT_SYMBOL (skb_copy_and_csum_bits); +static __wsum warn_crc32c_csum_update (const void *buff,int len,__wsum sum) +{ +net_warn_ratelimited ( +"%s: attempt to compute crc32c without libcrc32c.ko\n" , + __func__); +return 0 ; +} + +static __wsum warn_crc32c_csum_combine (__wsum csum,__wsum csum2, +int offset,int len) +{ +net_warn_ratelimited ( +"%s: attempt to compute crc32c without libcrc32c.ko\n" , + __func__); +return 0 ; +} + +const struct skb_checksum_ops *crc32c_csum_stub __read_mostly + &(struct skb_checksum_ops) { + .update = warn_crc32c_csum_update, + .combine = warn_crc32c_csum_combine, +}; +EXPORT_SYMBOL (crc32c_csum_stub); +/** * skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy() * @from: source buffer
net/sctp/offload.c +6 -0
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = { }, }; +static const struct skb_checksum_ops *crc32c_csum_ops __read_mostly + &(struct skb_checksum_ops) { + .update = sctp_csum_update, + .combine = sctp_csum_combine, +}; +int __init sctp_offload_init (void ) {int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)if (ret) goto ipv4; + crc32c_csum_stub = crc32c_csum_ops;return ret; ipv4:
Signature · 1 line
2.7.4
RFC PATCH v4 2/7 net: introduce skb_crc32c_csum_help
In reply to Tom Herbertskb_crc32c_csum_help is like skb_checksum_help, but it is designed for checksumming SCTP packets using crc32c (see RFC3309), provided that libcrc32c.ko has been loaded before. In case libcrc32c is not loaded, invoking skb_crc32c_csum_help on a skb results in one the following printouts:
warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.kowarn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko
--- include/linux/netdevice.h | 1 + include/linux/skbuff.h | 3 ++- net/core/dev.c | 40 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+), 1 deletion(-)
include/linux/netdevice.h +1 -0
@@ -3898,6 +3898,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);int dev_get_nest_level (struct net_device *dev);int skb_checksum_help (struct sk_buff *skb); +int skb_crc32c_csum_help (struct sk_buff *skb);struct sk_buff *__skb_gso_segment (struct sk_buff *skb,netdev_features_t features,bool tx_path); struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
include/linux/skbuff.h +2 -1
@@ -193,7 +193,8 @@* accordingly. Note the there is no indication in the skbuff that the * CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports * both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers. +* is configured for a packet presumably by inspecting packet headers; in +* case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack
net/core/dev.c +40 -0
@@ -140,6 +140,7 @@#include <linux/hrtimer.h> #include <linux/netfilter_ingress.h> #include <linux/crash_dump.h> +#include <linux/sctp.h> #include "net-sysfs.h"
@@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb) }EXPORT_SYMBOL (skb_checksum_help); +int skb_crc32c_csum_help (struct sk_buff *skb) +{ +__le32 crc32c_csum; +int ret =0 , offset; + +if (skb->ip_summed !=CHECKSUM_PARTIAL ) + goto out; + +if (unlikely (skb_is_gso (skb))) + goto out; + +/* Before computing a checksum, we should make sure no frag could +* be modified by an external entity : checksum could be wrong. +*/ +if (unlikely (skb_has_shared_frag (skb))) { + ret =__skb_linearize (skb); +if (ret) + goto out; + } + + offset =skb_checksum_start_offset (skb); + crc32c_csum =cpu_to_le32 (~__skb_checksum (skb, offset, + skb->len - offset, ~(__u32 )0 , + crc32c_csum_stub)); + offset += offsetof(struct sctphdr , checksum); +BUG_ON (offset >=skb_headlen (skb)); + +if (skb_cloned (skb) && + !skb_clone_writable (skb, offset +sizeof (__le32))) { + ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); +if (ret) + goto out; + } + *(__le32 *)(skb->data + offset) = crc32c_csum; + skb->ip_summed =CHECKSUM_NONE ; +out: +return ret; +} +__be16 skb_network_protocol (struct sk_buff *skb,int *depth) {__be16 type = skb->protocol;
Signature · 1 line
2.7.4
Marcelo Ricardo Leitner
maintainerRe: [PATCH RFC net-next v4 2/7] net: introduce skb_crc32c_csum_help
Quoted 74 lines · Davide Caratti
skb_crc32c_csum_helpis likeskb_checksum_help, but it is designed for checksumming SCTP packets using crc32c (see RFC3309), provided that libcrc32c.ko has been loaded before. In case libcrc32c is not loaded, invokingskb_crc32c_csum_helpon a skb results in one the following printouts:
warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.kowarn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.koSigned-off-by Davide Caratti <[email protected]>--- include/linux/netdevice.h | 1 + include/linux/skbuff.h | 3 ++- net/core/dev.c | 40 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+), 1 deletion(-)include/linux/netdevice.h +1
-0@@ -3898,6 +3898,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);int dev_get_nest_level (struct net_device *dev);int skb_checksum_help (struct sk_buff *skb); +int skb_crc32c_csum_help (struct sk_buff *skb);struct sk_buff *__skb_gso_segment (struct sk_buff *skb,netdev_features_t features,bool tx_path); struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,include/linux/skbuff.h +2
-1@@ -193,7 +193,8 @@* accordingly. Note the there is no indication in the skbuff that the * CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports * both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers. +* is configured for a packet presumably by inspecting packet headers; in +* case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack net/core/dev.c +17
-0@@ -140,6 +140,7 @@#include <linux/hrtimer.h> #include <linux/netfilter_ingress.h> #include <linux/crash_dump.h> +#include <linux/sctp.h> #include "net-sysfs.h" @@ -2606,6 +2607,45 @@ int skb_checksum_help(struct sk_buff *skb) }EXPORT_SYMBOL (skb_checksum_help); +int skb_crc32c_csum_help (struct sk_buff *skb) +{ +__le32 crc32c_csum; +int ret =0 , offset; + +if (skb->ip_summed !=CHECKSUM_PARTIAL ) + goto out; + +if (unlikely (skb_is_gso (skb))) + goto out; + +/* Before computing a checksum, we should make sure no frag could +* be modified by an external entity : checksum could be wrong. +*/ +if (unlikely (skb_has_shared_frag (skb))) { + ret =__skb_linearize (skb);
net/core/dev.c int skb_checksum_help(struct sk_buff *skb) · line 2635
Quoted 10 lines
net/core/dev.c +10
-0+if (ret) + goto out; + } + + offset =skb_checksum_start_offset (skb); + crc32c_csum =cpu_to_le32 (~__skb_checksum (skb, offset, + skb->len - offset, ~(__u32 )0 , + crc32c_csum_stub)); + offset += offsetof(struct sctphdr , checksum); +BUG_ON (offset >=skb_headlen (skb));
I suggest using WARN_ON_ONCE() here and returning an error instead. Will still allow debugging and won't disrupt the system.
net/core/dev.c int skb_checksum_help(struct sk_buff *skb) · line 2642
Quoted 7 lines
net/core/dev.c +7
-0+ +if (skb_cloned (skb) && + !skb_clone_writable (skb, offset +sizeof (__le32))) { + ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); +if (ret) + goto out; + }
We could do this check (including the BUG_ON/WARN check above) before the actual crc32 calc. This can fail, and if it does, we will have calculated it in vain. Note how offset doesn't really depend on the checksum result.
I know skb_checksum_help also does it this way, maybe it was because of some cache optimization on the offset += checksum offset operation?
Quoted 17 lines
net/core/dev.c +6
-0+ *(__le32 *)(skb->data + offset) = crc32c_csum; + skb->ip_summed =CHECKSUM_NONE ; +out: +return ret; +} +__be16 skb_network_protocol (struct sk_buff *skb,int *depth) {__be16 type = skb->protocol;Signature · 6 lines
2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
RFC PATCH v4 3/7 sk_buff: remove support for csum_bad in sk_buff
In reply to Tom HerbertThis bit was introduced with 5a21232983aa ("net: Support for csum_bad in skbuff") to reduce the stack workload when processing RX packets carrying a wrong Internet Checksum. Up to now, only one driver (besides GRO core) are setting it.
The test on NAPI_GRO_CB(skb)->flush in dev_gro_receive() is now done before the test on same_flow, to preserve behavior in case of wrong checksum.
--- drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 2 +- include/linux/netdevice.h | 4 +--- include/linux/skbuff.h | 23 ++--------------------- net/bridge/netfilter/nft_reject_bridge.c | 5 +---- net/core/dev.c | 8 +++----- net/ipv4/netfilter/nf_reject_ipv4.c | 2 +- net/ipv6/netfilter/nf_reject_ipv6.c | 3 --- 7 files changed, 9 insertions(+), 38 deletions(-)
drivers/net/ethernet/aquantia/atlantic/aq_ring.c +1 -1
@@ -223,7 +223,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget) skb->protocol =eth_type_trans (skb, ndev);if (unlikely (buff->is_cso_err)) { ++self->stats.rx.errors; -__skb_mark_checksum_bad (skb); + skb->ip_summed =CHECKSUM_NONE ; }else {if (buff->is_ip_cso) {__skb_incr_checksum_unnecessary (skb);
include/linux/netdevice.h +1 -3
@@ -2546,9 +2546,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)if (__skb_gro_checksum_validate_needed (skb, zero_okay, check)) \ __ret =__skb_gro_checksum_validate_complete (skb, \compute_pseudo (skb, proto)); \ -if (__ret) \ -__skb_mark_checksum_bad (skb); \ -else \ +if (!__ret) \skb_gro_incr_csum_unnecessary (skb); \ __ret; \ })
include/linux/skbuff.h +2 -21
@@ -743,7 +743,7 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 csum_bad:1; + __u8 __csum_bad_unused:1; /* one bit hole */ __u8 dst_pending_confirm:1;#ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -3387,21 +3387,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb) } } -static inline void __skb_mark_checksum_bad (struct sk_buff *skb) -{ -/* Mark current checksum as bad (typically called from GRO -* path). In the case that ip_summed is CHECKSUM_NONE -* this must be the first checksum encountered in the packet. -* When ip_summed is CHECKSUM_UNNECESSARY, this is the first -* checksum after the last one validated. For UDP, a zero -* checksum can not be marked as bad. -*/ - -if (skb->ip_summed =CHECKSUM_NONE || - skb->ip_summed =CHECKSUM_UNNECESSARY ) - skb->csum_bad =1 ; -} -/* Check if we need to perform checksum complete validation. * * Returns true if checksum complete is needed, false otherwise
@@ -3455,9 +3440,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb, skb->csum_valid =1 ;return 0 ; } - }else if (skb->csum_bad) { -/* ip_summed = CHECKSUM_NONE in this case */ -return (__force __sum16 )1 ; } skb->csum = psum;
@@ -3517,8 +3499,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)static inline bool __skb_checksum_convert_check (struct sk_buff *skb) { -return (skb->ip_summed =CHECKSUM_NONE && - skb->csum_valid && !skb->csum_bad); +return (skb->ip_summed =CHECKSUM_NONE && skb->csum_valid); } static inline void __skb_checksum_convert(struct sk_buff *skb,
net/bridge/netfilter/nft_reject_bridge.c +1 -4
@@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,__wsum csum;u8 proto; -if (oldskb->csum_bad || !nft_bridge_iphdr_validate (oldskb)) +if (!nft_bridge_iphdr_validate (oldskb))return ;/* IP header checks: fragment. */
@@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)__be16 fo;u8 proto = ip6h->nexthdr; -if (skb->csum_bad) -return false; -if (skb_csum_unnecessary (skb))return true;
net/core/dev.c +3 -5
@@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buffif (!(skb->dev->features &NETIF_F_GRO )) goto normal; -if (skb->csum_bad) - goto normal; -gro_list_prepare (napi, skb);rcu_read_lock ();
@@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff napi->gro_count--; } +if (NAPI_GRO_CB (skb)->flush) + goto normal; +if (same_flow) goto ok; -if (NAPI_GRO_CB (skb)->flush) - goto normal;if (unlikely (napi->gro_count >=MAX_GRO_SKBS )) {struct sk_buff *nskb = napi->gro_list;
net/ipv4/netfilter/nf_reject_ipv4.c +1 -1
@@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)struct iphdr *iph =ip_hdr (skb_in);u8 proto; -if (skb_in->csum_bad || iph->frag_off &htons (IP_OFFSET )) +if (iph->frag_off &htons (IP_OFFSET ))return ;if (skb_csum_unnecessary (skb_in)) {
net/ipv6/netfilter/nf_reject_ipv6.c +0 -3
@@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)__be16 fo;u8 proto; -if (skb->csum_bad) -return false; -if (skb_csum_unnecessary (skb))return true;
Signature · 1 line
2.7.4
kernel test robot
build bot[sk_buff] 95510aef27: BUG:Bad_page_state_in_process
FYI, we noticed the following commit:
FYI, we noticed the following commit:
commit: 95510aef27899c42a1b8c25a656b44d31fc5fcad ("sk_buff: remove support for csum_bad in sk_buff")
url: https://github.com/0day-ci/linux/commits/Davide-Caratti/skbuff-add-stub-to-help-computing-crc32c-on-SCTP-packets/20170420-233814
in testcase: unixbench
with following parameters:
runtime: 300s nr_task: 100% test: context1 cpufreq_governor: performance
test-description: UnixBench is the original BYTE UNIX benchmark suite aims to test performance of Unix-like system.
test-url: https://github.com/kdlucas/byte-unixbench
on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 4G memory
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+----------------+------------+------------+ | | 4c264afe8e | 95510aef27 | +----------------+------------+------------+ | boot_successes | 4 | 3 | +----------------+------------+------------+
[ 479.604098] BUG: Bad page state in process swapper/3 pfn:11bd99 [ 479.604100] page:ffffea00046f6640 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.604101] flags: 0x17ffffc0000000() [ 479.604103] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.604104] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000 [ 479.604104] page dumped because: nonzero _count [ 479.604105] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.604124] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.11.0-rc6-01591-g95510ae #1 [ 479.604125] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.604125] Call Trace: [ 479.604127] <IRQ> [ 479.604131] dump_stack+0x63/0x8a [ 479.604134] bad_page+0xc4/0x130 [ 479.604135] check_new_page_bad+0x67/0x80 [ 479.604137] get_page_from_freelist+0x448/0xca0 [ 479.604139] __alloc_pages_nodemask+0xd0/0x240 [ 479.604140] page_frag_alloc+0xc0/0x1a0 [ 479.604143] __napi_alloc_skb+0x8e/0xf0 [ 479.604145] rtl8169_poll+0x1dd/0x640 [ 479.604147] net_rx_action+0x23c/0x3f0 [ 479.604148] ? rtl8169_interrupt+0x6b/0x70 [ 479.604150] __do_softirq+0x104/0x2cb [ 479.604153] irq_exit+0xf1/0x100 [ 479.604155] do_IRQ+0x4f/0xd0 [ 479.604157] common_interrupt+0x93/0x93 [ 479.604159] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.604160] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.604161] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.604161] RDX: 0000006faaa19b7c RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.604162] RBP: ffffc900006bbeb8 R08: 000000000000049e R09: 0000000000000018 [ 479.604162] R10: ffffc900006bbe48 R11: 000000000000028c R12: ffff88011fba4500 [ 479.604163] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.604163] </IRQ> [ 479.604165] ? cpuidle_enter_state+0x110/0x2e0 [ 479.604167] cpuidle_enter+0x17/0x20 [ 479.604169] call_cpuidle+0x23/0x40 [ 479.604170] do_idle+0x189/0x200 [ 479.604171] cpu_startup_entry+0x1d/0x20 [ 479.604174] start_secondary+0x107/0x130 [ 479.604175] start_cpu+0x14/0x14 [ 479.604176] Disabling lock debugging due to kernel taint [ 479.605091] BUG: Bad page state in process swapper/3 pfn:117b70 [ 479.605092] page:ffffea00045edc00 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.605092] flags: 0x17ffffc0000000() [ 479.605094] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.605095] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 [ 479.605095] page dumped because: nonzero _count [ 479.605095] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.605112] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.605113] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.605113] Call Trace: [ 479.605114] <IRQ> [ 479.605116] dump_stack+0x63/0x8a [ 479.605118] bad_page+0xc4/0x130 [ 479.605119] check_new_page_bad+0x67/0x80 [ 479.605121] get_page_from_freelist+0x46c/0xca0 [ 479.605123] ? tcp_gro_receive+0x259/0x310 [ 479.605125] __alloc_pages_nodemask+0xd0/0x240 [ 479.605126] page_frag_alloc+0xc0/0x1a0 [ 479.605129] __napi_alloc_skb+0x8e/0xf0 [ 479.605131] rtl8169_poll+0x1dd/0x640 [ 479.605132] net_rx_action+0x23c/0x3f0 [ 479.605133] ? rtl8169_interrupt+0x6b/0x70 [ 479.605134] __do_softirq+0x104/0x2cb [ 479.605137] irq_exit+0xf1/0x100 [ 479.605139] do_IRQ+0x4f/0xd0 [ 479.605140] common_interrupt+0x93/0x93 [ 479.605142] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.605142] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.605143] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.605144] RDX: 0000006faab0b565 RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.605145] RBP: ffffc900006bbeb8 R08: 0000000000000294 R09: 0000000000000018 [ 479.605145] R10: ffffc900006bbe48 R11: 000000000000028c R12: ffff88011fba4500 [ 479.605145] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.605146] </IRQ> [ 479.605148] ? cpuidle_enter_state+0x110/0x2e0 [ 479.605149] cpuidle_enter+0x17/0x20 [ 479.605151] call_cpuidle+0x23/0x40 [ 479.605151] do_idle+0x189/0x200 [ 479.605152] cpu_startup_entry+0x1d/0x20 [ 479.605155] start_secondary+0x107/0x130 [ 479.605156] start_cpu+0x14/0x14 [ 479.606932] BUG: Bad page state in process swapper/3 pfn:116f19 [ 479.606933] page:ffffea00045bc640 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.606934] flags: 0x17ffffc0000000() [ 479.606935] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.606936] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000 [ 479.606936] page dumped because: nonzero _count [ 479.606936] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.606952] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.606953] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.606953] Call Trace: [ 479.606954] <IRQ> [ 479.606956] dump_stack+0x63/0x8a [ 479.606957] bad_page+0xc4/0x130 [ 479.606958] check_new_page_bad+0x67/0x80 [ 479.606960] get_page_from_freelist+0x448/0xca0 [ 479.606962] ? tcp_gro_receive+0x259/0x310 [ 479.606963] __alloc_pages_nodemask+0xd0/0x240 [ 479.606965] page_frag_alloc+0xc0/0x1a0 [ 479.606967] __napi_alloc_skb+0x8e/0xf0 [ 479.606969] rtl8169_poll+0x1dd/0x640 [ 479.606970] net_rx_action+0x23c/0x3f0 [ 479.606971] ? rtl8169_interrupt+0x6b/0x70 [ 479.606973] __do_softirq+0x104/0x2cb [ 479.606975] irq_exit+0xf1/0x100 [ 479.606977] do_IRQ+0x4f/0xd0 [ 479.606978] common_interrupt+0x93/0x93 [ 479.606980] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.606980] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.606981] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.606982] RDX: 0000006faacc6225 RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.606982] RBP: ffffc900006bbeb8 R08: 000000000000028b R09: 0000000000000018 [ 479.606983] R10: ffffc900006bbe48 R11: 000000000000023b R12: ffff88011fba4500 [ 479.606983] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.606984] </IRQ> [ 479.606985] ? cpuidle_enter_state+0x110/0x2e0 [ 479.606987] cpuidle_enter+0x17/0x20 [ 479.606989] call_cpuidle+0x23/0x40 [ 479.606989] do_idle+0x189/0x200 [ 479.606990] cpu_startup_entry+0x1d/0x20 [ 479.606992] start_secondary+0x107/0x130 [ 479.606993] start_cpu+0x14/0x14 [ 479.607896] BUG: Bad page state in process swapper/3 pfn:11640c [ 479.607897] page:ffffea0004590300 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.607898] flags: 0x17ffffc0000000() [ 479.607899] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.607900] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.607900] page dumped because: nonzero _count [ 479.607900] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.607915] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.607916] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.607916] Call Trace: [ 479.607916] <IRQ> [ 479.607918] dump_stack+0x63/0x8a [ 479.607920] bad_page+0xc4/0x130 [ 479.607921] check_new_page_bad+0x67/0x80 [ 479.607922] get_page_from_freelist+0x448/0xca0 [ 479.607924] ? tcp_gro_receive+0x259/0x310 [ 479.607926] __alloc_pages_nodemask+0xd0/0x240 [ 479.607927] page_frag_alloc+0xc0/0x1a0 [ 479.607929] __napi_alloc_skb+0x8e/0xf0 [ 479.607930] rtl8169_poll+0x1dd/0x640 [ 479.607932] net_rx_action+0x23c/0x3f0 [ 479.607933] ? rtl8169_interrupt+0x6b/0x70 [ 479.607934] __do_softirq+0x104/0x2cb [ 479.607936] irq_exit+0xf1/0x100 [ 479.607938] do_IRQ+0x4f/0xd0 [ 479.607940] common_interrupt+0x93/0x93 [ 479.607941] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.607941] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.607942] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.607943] RDX: 0000006faadb774d RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.607943] RBP: ffffc900006bbeb8 R08: 000000000000028b R09: 0000000000000018 [ 479.607944] R10: ffffc900006bbe48 R11: 000000000000027e R12: ffff88011fba4500 [ 479.607944] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.607945] </IRQ> [ 479.607946] ? cpuidle_enter_state+0x110/0x2e0 [ 479.607948] cpuidle_enter+0x17/0x20 [ 479.607949] call_cpuidle+0x23/0x40 [ 479.607950] do_idle+0x189/0x200 [ 479.607951] cpu_startup_entry+0x1d/0x20 [ 479.607953] start_secondary+0x107/0x130 [ 479.607954] start_cpu+0x14/0x14 [ 479.611708] BUG: Bad page state in process swapper/3 pfn:1171ca [ 479.611709] page:ffffea00045c7280 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.611710] flags: 0x17ffffc0000000() [ 479.611711] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.611712] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.611712] page dumped because: nonzero _count [ 479.611712] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.611727] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.611728] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.611728] Call Trace: [ 479.611729] <IRQ> [ 479.611730] dump_stack+0x63/0x8a [ 479.611732] bad_page+0xc4/0x130 [ 479.611733] check_new_page_bad+0x67/0x80 [ 479.611735] get_page_from_freelist+0x448/0xca0 [ 479.611737] __alloc_pages_nodemask+0xd0/0x240 [ 479.611738] page_frag_alloc+0xc0/0x1a0 [ 479.611740] __napi_alloc_skb+0x8e/0xf0 [ 479.611742] rtl8169_poll+0x1dd/0x640 [ 479.611743] net_rx_action+0x23c/0x3f0 [ 479.611744] ? rtl8169_interrupt+0x6b/0x70 [ 479.611745] __do_softirq+0x104/0x2cb [ 479.611747] irq_exit+0xf1/0x100 [ 479.611750] do_IRQ+0x4f/0xd0 [ 479.611751] common_interrupt+0x93/0x93 [ 479.611752] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.611753] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.611754] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.611754] RDX: 0000006fab15558c RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.611755] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018 [ 479.611755] R10: ffffc900006bbe48 R11: 0000000000000236 R12: ffff88011fba4500 [ 479.611756] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.611756] </IRQ> [ 479.611758] ? cpuidle_enter_state+0x110/0x2e0 [ 479.611759] cpuidle_enter+0x17/0x20 [ 479.611761] call_cpuidle+0x23/0x40 [ 479.611761] do_idle+0x189/0x200 [ 479.611762] cpu_startup_entry+0x1d/0x20 [ 479.611764] start_secondary+0x107/0x130 [ 479.611765] start_cpu+0x14/0x14 [ 479.612535] BUG: Bad page state in process swapper/3 pfn:117a15 [ 479.612535] page:ffffea00045e8540 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.612536] flags: 0x17ffffc0000000() [ 479.612537] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.612538] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.612539] page dumped because: nonzero _count [ 479.612539] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.612553] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.612553] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.612554] Call Trace: [ 479.612554] <IRQ> [ 479.612556] dump_stack+0x63/0x8a [ 479.612557] bad_page+0xc4/0x130 [ 479.612558] check_new_page_bad+0x67/0x80 [ 479.612560] get_page_from_freelist+0x448/0xca0 [ 479.612562] ? tcp_gro_receive+0x259/0x310 [ 479.612563] __alloc_pages_nodemask+0xd0/0x240 [ 479.612565] page_frag_alloc+0xc0/0x1a0 [ 479.612567] __napi_alloc_skb+0x8e/0xf0 [ 479.612568] rtl8169_poll+0x1dd/0x640 [ 479.612569] net_rx_action+0x23c/0x3f0 [ 479.612570] ? rtl8169_interrupt+0x6b/0x70 [ 479.612571] __do_softirq+0x104/0x2cb [ 479.612574] irq_exit+0xf1/0x100 [ 479.612575] do_IRQ+0x4f/0xd0 [ 479.612577] common_interrupt+0x93/0x93 [ 479.612578] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.612578] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.612579] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.612580] RDX: 0000006fab21ea9e RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.612580] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018 [ 479.612581] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500 [ 479.612581] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.612582] </IRQ> [ 479.612583] ? cpuidle_enter_state+0x110/0x2e0 [ 479.612584] cpuidle_enter+0x17/0x20 [ 479.612586] call_cpuidle+0x23/0x40 [ 479.612587] do_idle+0x189/0x200 [ 479.612587] cpu_startup_entry+0x1d/0x20 [ 479.612589] start_secondary+0x107/0x130 [ 479.612590] start_cpu+0x14/0x14 [ 479.613358] BUG: Bad page state in process swapper/3 pfn:11721a [ 479.613359] page:ffffea00045c8680 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.613359] flags: 0x17ffffc0000000() [ 479.613361] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.613362] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.613362] page dumped because: nonzero _count [ 479.613362] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.613376] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.613377] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.613377] Call Trace: [ 479.613378] <IRQ> [ 479.613379] dump_stack+0x63/0x8a [ 479.613381] bad_page+0xc4/0x130 [ 479.613382] check_new_page_bad+0x67/0x80 [ 479.613383] get_page_from_freelist+0x448/0xca0 [ 479.613385] ? tcp_gro_receive+0x259/0x310 [ 479.613387] __alloc_pages_nodemask+0xd0/0x240 [ 479.613388] page_frag_alloc+0xc0/0x1a0 [ 479.613390] __napi_alloc_skb+0x8e/0xf0 [ 479.613391] rtl8169_poll+0x1dd/0x640 [ 479.613392] net_rx_action+0x23c/0x3f0 [ 479.613393] ? rtl8169_interrupt+0x6b/0x70 [ 479.613395] __do_softirq+0x104/0x2cb [ 479.613396] irq_exit+0xf1/0x100 [ 479.613398] do_IRQ+0x4f/0xd0 [ 479.613399] common_interrupt+0x93/0x93 [ 479.613401] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.613401] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.613402] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.613402] RDX: 0000006fab2e84df RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.613403] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018 [ 479.613403] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500 [ 479.613404] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.613404] </IRQ> [ 479.613406] ? cpuidle_enter_state+0x110/0x2e0 [ 479.613407] cpuidle_enter+0x17/0x20 [ 479.613409] call_cpuidle+0x23/0x40 [ 479.613409] do_idle+0x189/0x200 [ 479.613410] cpu_startup_entry+0x1d/0x20 [ 479.613412] start_secondary+0x107/0x130 [ 479.613413] start_cpu+0x14/0x14 [ 479.614172] BUG: Bad page state in process swapper/3 pfn:11b3b5 [ 479.614173] page:ffffea00046ced40 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.614174] flags: 0x17ffffc0000000() [ 479.614174] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.614175] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.614176] page dumped because: nonzero _count [ 479.614176] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.614190] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.614190] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.614191] Call Trace: [ 479.614191] <IRQ> [ 479.614193] dump_stack+0x63/0x8a [ 479.614194] bad_page+0xc4/0x130 [ 479.614195] check_new_page_bad+0x67/0x80 [ 479.614197] get_page_from_freelist+0x448/0xca0 [ 479.614198] ? tcp_gro_receive+0x259/0x310 [ 479.614200] __alloc_pages_nodemask+0xd0/0x240 [ 479.614201] page_frag_alloc+0xc0/0x1a0 [ 479.614203] __napi_alloc_skb+0x8e/0xf0 [ 479.614204] rtl8169_poll+0x1dd/0x640 [ 479.614206] net_rx_action+0x23c/0x3f0 [ 479.614206] ? rtl8169_interrupt+0x6b/0x70 [ 479.614208] __do_softirq+0x104/0x2cb [ 479.614209] irq_exit+0xf1/0x100 [ 479.614211] do_IRQ+0x4f/0xd0 [ 479.614212] common_interrupt+0x93/0x93 [ 479.614214] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.614214] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.614215] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.614215] RDX: 0000006fab3b1327 RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.614216] RBP: ffffc900006bbeb8 R08: 000000000000026c R09: 0000000000000018 [ 479.614216] R10: ffffc900006bbe48 R11: 000000000000025e R12: ffff88011fba4500 [ 479.614217] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.614217] </IRQ> [ 479.614219] ? cpuidle_enter_state+0x110/0x2e0 [ 479.614220] cpuidle_enter+0x17/0x20 [ 479.614221] call_cpuidle+0x23/0x40 [ 479.614222] do_idle+0x189/0x200 [ 479.614223] cpu_startup_entry+0x1d/0x20 [ 479.614225] start_secondary+0x107/0x130 [ 479.614226] start_cpu+0x14/0x14 [ 479.615817] BUG: Bad page state in process swapper/3 pfn:116506 [ 479.615818] page:ffffea0004594180 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.615819] flags: 0x17ffffc0000000() [ 479.615820] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.615821] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.615821] page dumped because: nonzero _count [ 479.615821] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.615835] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.615835] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.615836] Call Trace: [ 479.615836] <IRQ> [ 479.615838] dump_stack+0x63/0x8a [ 479.615839] bad_page+0xc4/0x130 [ 479.615841] check_new_page_bad+0x67/0x80 [ 479.615842] get_page_from_freelist+0x448/0xca0 [ 479.615844] ? tcp_gro_receive+0x259/0x310 [ 479.615845] __alloc_pages_nodemask+0xd0/0x240 [ 479.615847] page_frag_alloc+0xc0/0x1a0 [ 479.615849] __napi_alloc_skb+0x8e/0xf0 [ 479.615850] rtl8169_poll+0x1dd/0x640 [ 479.615851] net_rx_action+0x23c/0x3f0 [ 479.615852] ? rtl8169_interrupt+0x6b/0x70 [ 479.615853] __do_softirq+0x104/0x2cb [ 479.615855] irq_exit+0xf1/0x100 [ 479.615857] do_IRQ+0x4f/0xd0 [ 479.615858] common_interrupt+0x93/0x93 [ 479.615859] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.615860] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.615861] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.615861] RDX: 0000006fab543d4b RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.615862] RBP: ffffc900006bbeb8 R08: 000000000000025d R09: 0000000000000018 [ 479.615862] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500 [ 479.615863] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.615863] </IRQ> [ 479.615865] ? cpuidle_enter_state+0x110/0x2e0 [ 479.615866] cpuidle_enter+0x17/0x20 [ 479.615867] call_cpuidle+0x23/0x40 [ 479.615868] do_idle+0x189/0x200 [ 479.615869] cpu_startup_entry+0x1d/0x20 [ 479.615871] start_secondary+0x107/0x130 [ 479.615871] start_cpu+0x14/0x14 [ 479.615889] BUG: Bad page state in process swapper/3 pfn:11b0ea [ 479.615890] page:ffffea00046c3a80 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.615891] flags: 0x17ffffc0000000() [ 479.615891] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.615892] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.615893] page dumped because: nonzero _count [ 479.615893] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.615905] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.615905] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.615906] Call Trace: [ 479.615906] <IRQ> [ 479.615907] dump_stack+0x63/0x8a [ 479.615909] bad_page+0xc4/0x130 [ 479.615910] check_new_page_bad+0x67/0x80 [ 479.615911] get_page_from_freelist+0x448/0xca0 [ 479.615913] ? tcp_gro_receive+0x259/0x310 [ 479.615914] __alloc_pages_nodemask+0xd0/0x240 [ 479.615916] page_frag_alloc+0xc0/0x1a0 [ 479.615917] __napi_alloc_skb+0x8e/0xf0 [ 479.615919] rtl8169_poll+0x1dd/0x640 [ 479.615920] net_rx_action+0x23c/0x3f0 [ 479.615920] ? rtl8169_interrupt+0x6b/0x70 [ 479.615922] __do_softirq+0x104/0x2cb [ 479.615924] irq_exit+0xf1/0x100 [ 479.615925] do_IRQ+0x4f/0xd0 [ 479.615927] common_interrupt+0x93/0x93 [ 479.615928] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.615928] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.615929] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.615929] RDX: 0000006fab543d4b RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.615930] RBP: ffffc900006bbeb8 R08: 000000000000025d R09: 0000000000000018 [ 479.615930] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500 [ 479.615931] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.615931] </IRQ> [ 479.615933] ? cpuidle_enter_state+0x110/0x2e0 [ 479.615934] cpuidle_enter+0x17/0x20 [ 479.615935] call_cpuidle+0x23/0x40 [ 479.615936] do_idle+0x189/0x200 [ 479.615937] cpu_startup_entry+0x1d/0x20 [ 479.615938] start_secondary+0x107/0x130 [ 479.615939] start_cpu+0x14/0x14 [ 479.617485] BUG: Bad page state in process swapper/3 pfn:116f7b [ 479.617486] page:ffffea00045bdec0 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.617487] flags: 0x17ffffc0000000() [ 479.617488] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.617489] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.617489] page dumped because: nonzero _count [ 479.617489] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.617503] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.617503] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.617503] Call Trace: [ 479.617504] <IRQ> [ 479.617507] dump_stack+0x63/0x8a [ 479.617508] bad_page+0xc4/0x130 [ 479.617509] check_new_page_bad+0x67/0x80 [ 479.617511] get_page_from_freelist+0x448/0xca0 [ 479.617513] ? tcp_gro_receive+0x259/0x310 [ 479.617514] __alloc_pages_nodemask+0xd0/0x240 [ 479.617516] page_frag_alloc+0xc0/0x1a0 [ 479.617517] __napi_alloc_skb+0x8e/0xf0 [ 479.617518] rtl8169_poll+0x1dd/0x640 [ 479.617520] net_rx_action+0x23c/0x3f0 [ 479.617520] ? rtl8169_interrupt+0x6b/0x70 [ 479.617522] __do_softirq+0x104/0x2cb [ 479.617523] irq_exit+0xf1/0x100 [ 479.617525] do_IRQ+0x4f/0xd0 [ 479.617526] common_interrupt+0x93/0x93 [ 479.617528] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.617528] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.617529] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.617529] RDX: 0000006fab6d65e4 RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.617530] RBP: ffffc900006bbeb8 R08: 000000000000025a R09: 0000000000000018 [ 479.617531] R10: ffffc900006bbe48 R11: 0000000000000235 R12: ffff88011fba4500 [ 479.617531] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.617531] </IRQ> [ 479.617533] ? cpuidle_enter_state+0x110/0x2e0 [ 479.617534] cpuidle_enter+0x17/0x20 [ 479.617536] call_cpuidle+0x23/0x40 [ 479.617536] do_idle+0x189/0x200 [ 479.617537] cpu_startup_entry+0x1d/0x20 [ 479.617539] start_secondary+0x107/0x130 [ 479.617540] start_cpu+0x14/0x14 [ 479.618280] BUG: Bad page state in process swapper/3 pfn:116411 [ 479.618281] page:ffffea0004590440 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.618281] flags: 0x17ffffc0000000() [ 479.618282] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.618283] raw: 0000000000000000 0000000300000001 0000000000000000 0000000000000000 [ 479.618284] page dumped because: nonzero _count [ 479.618284] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.618297] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.618298] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.618298] Call Trace: [ 479.618300] <IRQ> [ 479.618302] dump_stack+0x63/0x8a [ 479.618303] bad_page+0xc4/0x130 [ 479.618304] check_new_page_bad+0x67/0x80 [ 479.618306] get_page_from_freelist+0x448/0xca0 [ 479.618307] ? tcp_gro_receive+0x259/0x310 [ 479.618309] __alloc_pages_nodemask+0xd0/0x240 [ 479.618310] page_frag_alloc+0xc0/0x1a0 [ 479.618312] __napi_alloc_skb+0x8e/0xf0 [ 479.618313] rtl8169_poll+0x1dd/0x640 [ 479.618315] net_rx_action+0x23c/0x3f0 [ 479.618315] ? rtl8169_interrupt+0x6b/0x70 [ 479.618317] __do_softirq+0x104/0x2cb [ 479.618318] irq_exit+0xf1/0x100 [ 479.618320] do_IRQ+0x4f/0xd0 [ 479.618321] common_interrupt+0x93/0x93 [ 479.618322] RIP: 0010:cpuidle_enter_state+0x122/0x2e0 [ 479.618323] RSP: 0018:ffffc900006bbe78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff4e [ 479.618324] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000000001f [ 479.618324] RDX: 0000006fab79fde5 RSI: ffff88011fb98a98 RDI: 0000000000000000 [ 479.618325] RBP: ffffc900006bbeb8 R08: 00000000ffffffff R09: 0000000000000008 [ 479.618325] R10: ffffc900006bbe48 R11: 000000000000026e R12: ffff88011fba4500 [ 479.618326] R13: ffffffff81f0b538 R14: 0000000000000004 R15: ffffffff81f0b520 [ 479.618326] </IRQ> [ 479.618328] ? cpuidle_enter_state+0x110/0x2e0 [ 479.618329] cpuidle_enter+0x17/0x20 [ 479.618331] call_cpuidle+0x23/0x40 [ 479.618331] do_idle+0x189/0x200 [ 479.618332] cpu_startup_entry+0x1d/0x20 [ 479.618334] start_secondary+0x107/0x130 [ 479.618335] start_cpu+0x14/0x14 [ 479.620004] BUG: Bad page state in process ksoftirqd/1 pfn:116688 [ 479.620005] page:ffffea000459a200 count:-45 mapcount:0 mapping: (null) index:0x0 [ 479.620006] flags: 0x17ffffc0000000() [ 479.620007] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffd3ffffffff [ 479.620008] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 [ 479.620009] page dumped because: nonzero _count [ 479.620009] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.620025] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.620025] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.620025] Call Trace: [ 479.620028] dump_stack+0x63/0x8a [ 479.620029] bad_page+0xc4/0x130 [ 479.620031] check_new_page_bad+0x67/0x80 [ 479.620033] get_page_from_freelist+0x46c/0xca0 [ 479.620035] ? tcp_gro_receive+0x259/0x310 [ 479.620037] __alloc_pages_nodemask+0xd0/0x240 [ 479.620039] page_frag_alloc+0xc0/0x1a0 [ 479.620041] __napi_alloc_skb+0x8e/0xf0 [ 479.620043] rtl8169_poll+0x1dd/0x640 [ 479.620045] net_rx_action+0x23c/0x3f0 [ 479.620046] ? pick_next_task_fair+0x312/0x520 [ 479.620048] __do_softirq+0x104/0x2cb [ 479.620050] ? smpboot_thread_fn+0x34/0x1f0 [ 479.620052] ? smpboot_thread_fn+0x12d/0x1f0 [ 479.620053] run_ksoftirqd+0x29/0x70 [ 479.620055] smpboot_thread_fn+0x128/0x1f0 [ 479.620056] kthread+0x114/0x150 [ 479.620058] ? sort_range+0x30/0x30 [ 479.620059] ? kthread_create_on_node+0x40/0x40 [ 479.620060] ret_from_fork+0x2c/0x40 [ 479.620062] BUG: Bad page state in process ksoftirqd/1 pfn:1178f0 [ 479.620063] page:ffffea00045e3c00 count:-65162 mapcount:0 mapping: (null) index:0x0 [ 479.620063] flags: 0x17ffffc0000000() [ 479.620065] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffff00f8ffffffff [ 479.620066] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 [ 479.620066] page dumped because: nonzero _count [ 479.620067] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.620082] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.620082] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.620082] Call Trace: [ 479.620084] dump_stack+0x63/0x8a [ 479.620086] bad_page+0xc4/0x130 [ 479.620087] check_new_page_bad+0x67/0x80 [ 479.620089] get_page_from_freelist+0x46c/0xca0 [ 479.620091] ? tcp_gro_receive+0x259/0x310 [ 479.620093] __alloc_pages_nodemask+0xd0/0x240 [ 479.620095] page_frag_alloc+0xc0/0x1a0 [ 479.620097] __napi_alloc_skb+0x8e/0xf0 [ 479.620098] rtl8169_poll+0x1dd/0x640 [ 479.620100] net_rx_action+0x23c/0x3f0 [ 479.620101] ? pick_next_task_fair+0x312/0x520 [ 479.620103] __do_softirq+0x104/0x2cb [ 479.620105] ? smpboot_thread_fn+0x34/0x1f0 [ 479.620106] ? smpboot_thread_fn+0x12d/0x1f0 [ 479.620108] run_ksoftirqd+0x29/0x70 [ 479.620109] smpboot_thread_fn+0x128/0x1f0 [ 479.620111] kthread+0x114/0x150 [ 479.620112] ? sort_range+0x30/0x30 [ 479.620113] ? kthread_create_on_node+0x40/0x40 [ 479.620115] ret_from_fork+0x2c/0x40 [ 479.623011] BUG: Bad page state in process ksoftirqd/1 pfn:117a50 [ 479.623012] page:ffffea00045e9400 count:-72723 mapcount:0 mapping: (null) index:0x0 [ 479.623013] flags: 0x17ffffc0000000() [ 479.623014] raw: 0017ffffc0000000 0000000000000000 0000000000000000 fffee3b3ffffffff [ 479.623015] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 [ 479.623016] page dumped because: nonzero _count [ 479.623016] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.623031] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.623031] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.623032] Call Trace: [ 479.623034] dump_stack+0x63/0x8a [ 479.623035] bad_page+0xc4/0x130 [ 479.623037] check_new_page_bad+0x67/0x80 [ 479.623038] get_page_from_freelist+0x46c/0xca0 [ 479.623040] ? tcp_gro_receive+0x259/0x310 [ 479.623042] __alloc_pages_nodemask+0xd0/0x240 [ 479.623044] page_frag_alloc+0xc0/0x1a0 [ 479.623046] __napi_alloc_skb+0x8e/0xf0 [ 479.623047] rtl8169_poll+0x1dd/0x640 [ 479.623049] net_rx_action+0x23c/0x3f0 [ 479.623050] ? pick_next_task_fair+0x4c5/0x520 [ 479.623052] __do_softirq+0x104/0x2cb [ 479.623053] ? smpboot_thread_fn+0x34/0x1f0 [ 479.623055] ? smpboot_thread_fn+0x12d/0x1f0 [ 479.623056] run_ksoftirqd+0x29/0x70 [ 479.623058] smpboot_thread_fn+0x128/0x1f0 [ 479.623059] kthread+0x114/0x150 [ 479.623060] ? sort_range+0x30/0x30 [ 479.623061] ? kthread_create_on_node+0x40/0x40 [ 479.623063] ret_from_fork+0x2c/0x40 [ 479.623064] BUG: Bad page state in process ksoftirqd/1 pfn:1166a4 [ 479.623065] page:ffffea000459a900 count:-1 mapcount:0 mapping: (null) index:0x0 [ 479.623066] flags: 0x17ffffc0000000() [ 479.623067] raw: 0017ffffc0000000 0000000000000000 0000000000000000 ffffffffffffffff [ 479.623068] raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 479.623068] page dumped because: nonzero _count [ 479.623069] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 479.623082] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 479.623083] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 479.623083] Call Trace: [ 479.623084] dump_stack+0x63/0x8a [ 479.623086] bad_page+0xc4/0x130 [ 479.623087] check_new_page_bad+0x67/0x80 [ 479.623089] get_page_from_freelist+0x448/0xca0 [ 479.623091] ? tcp_gro_receive+0x259/0x310 [ 479.623092] __alloc_pages_nodemask+0xd0/0x240 [ 479.623094] page_frag_alloc+0xc0/0x1a0 [ 479.623096] __napi_alloc_skb+0x8e/0xf0 [ 479.623097] rtl8169_poll+0x1dd/0x640 [ 479.623099] net_rx_action+0x23c/0x3f0 [ 479.623100] ? pick_next_task_fair+0x4c5/0x520 [ 479.623101] __do_softirq+0x104/0x2cb [ 479.623103] ? smpboot_thread_fn+0x34/0x1f0 [ 479.623104] ? smpboot_thread_fn+0x12d/0x1f0 [ 479.623106] run_ksoftirqd+0x29/0x70 [ 479.623107] smpboot_thread_fn+0x128/0x1f0 [ 479.623109] kthread+0x114/0x150 [ 479.623110] ? sort_range+0x30/0x30 [ 479.623111] ? kthread_create_on_node+0x40/0x40 [ 479.623113] ret_from_fork+0x2c/0x40 [ 507.274837] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [curl:6596] [ 507.282650] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sr_mod cdrom sg intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core ppdev ahci snd_hwdep i915 kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel libahci snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ghash_clmulni_intel cryptd snd pcspkr libata soundcore drm wmi shpchp parport_pc parport video ip_tables [ 507.331983] CPU: 3 PID: 6596 Comm: curl Tainted: G B 4.11.0-rc6-01591-g95510ae #1 [ 507.341396] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 507.349933] task: ffff880100f3cb80 task.stack: ffffc90009f0c000 [ 507.356591] RIP: 0010:skb_release_all+0x0/0x30 [ 507.361790] RSP: 0018:ffffc90009f0fb90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 [ 507.370146] RAX: 0000000000000001 RBX: ffff88011671bc00 RCX: 000000000e9d01da [ 507.378058] RDX: 000000000e9d01d9 RSI: ffff88011fb9e780 RDI: ffff88011671be00 [ 507.385962] RBP: ffffc90009f0fbb0 R08: 000000000001e780 R09: ffffffff81854469 [ 507.393900] R10: ffffea0004594c00 R11: ffff880100f3cb80 R12: ffff88011671be00 [ 507.401840] R13: ffffffff81856a07 R14: ffff88011668f740 R15: ffff88011c203b44 [ 507.409778] FS: 00007f21439d5c00(0000) GS:ffff88011fb80000(0000) knlGS:0000000000000000 [ 507.418742] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 507.425293] CR2: 000055c5d2c00488 CR3: 0000000116024000 CR4: 00000000001406e0 [ 507.433206] Call Trace: [ 507.436432] ? kfree_skb+0x32/0xa0 [ 507.440550] kfree_skb_list+0x17/0x30 [ 507.444942] skb_release_data+0xfc/0x110 [ 507.449578] ? kfree_skb_list+0x17/0x30 [ 507.454059] skb_release_all+0x24/0x30 [ 507.458480] kfree_skb+0x32/0xa0 [ 507.462370] kfree_skb_list+0x17/0x30 [ 507.466695] skb_release_data+0xfc/0x110 [ 507.471245] ? kfree_skb_list+0x17/0x30 [ 507.475745] skb_release_all+0x24/0x30 [ 507.480138] kfree_skb+0x32/0xa0 [ 507.484048] kfree_skb_list+0x17/0x30 [ 507.488362] skb_release_data+0xfc/0x110 [ 507.492915] skb_release_all+0x24/0x30 [ 507.497283] __kfree_skb+0x12/0x20 [ 507.501348] tcp_recvmsg+0x2ca/0xb20 [ 507.505569] inet_recvmsg+0x3c/0xa0 [ 507.509676] sock_recvmsg+0x3d/0x50 [ 507.513810] SYSC_recvfrom+0xd5/0x140 [ 507.518084] ? ktime_get_ts64+0x4f/0x100 [ 507.522626] SyS_recvfrom+0xe/0x10 [ 507.526638] entry_SYSCALL_64_fastpath+0x1a/0xa9 [ 507.531914] RIP: 0033:0x7f214312553f [ 507.536135] RSP: 002b:00007ffcfa06e220 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 507.544403] RAX: ffffffffffffffda RBX: 00007f214310fb58 RCX: 00007f214312553f [ 507.552334] RDX: 0000000000004000 RSI: 000055c5d2be8ce0 RDI: 0000000000000003 [ 507.560133] RBP: 0000000000002705 R08: 0000000000000000 R09: 0000000000000000 [ 507.567962] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f214310fb58 [ 507.575786] R13: 0000000000001010 R14: 000055c5d2bff470 R15: 00007f214310fb00 [ 507.583563] Code: 74 07 be 01 00 00 00 ff d0 49 8b 7e 08 48 85 ff 74 05 e8 04 01 00 00 4c 89 e7 e8 fc dd ff ff 5b 41 5c 41 5d 41 5e 5d c3 0f 1f 00 <0f> 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 3e dd ff ff 48 83 bb [ 507.603930] Kernel panic - not syncing: softlockup: hung tasks [ 507.610447] CPU: 3 PID: 6596 Comm: curl Tainted: G B L 4.11.0-rc6-01591-g95510ae #1 [ 507.619765] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 [ 507.628178] Call Trace: [ 507.631211] <IRQ> [ 507.633833] dump_stack+0x63/0x8a [ 507.637725] panic+0xd5/0x21e [ 507.641304] watchdog_timer_fn+0x216/0x220 [ 507.645974] ? watchdog_park_threads+0x70/0x70 [ 507.651088] __hrtimer_run_queues+0xdd/0x250 [ 507.655925] hrtimer_interrupt+0xa3/0x1f0 [ 507.660492] ? kfree_skb_list+0x17/0x30 [ 507.664939] local_apic_timer_interrupt+0x38/0x60 [ 507.670198] smp_apic_timer_interrupt+0x38/0x50 [ 507.675296] apic_timer_interrupt+0x93/0xa0 [ 507.680044] RIP: 0010:skb_release_all+0x0/0x30 [ 507.685001] RSP: 0018:ffffc90009f0fb90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 [ 507.693198] RAX: 0000000000000001 RBX: ffff88011671bc00 RCX: 000000000e9d01da [ 507.700923] RDX: 000000000e9d01d9 RSI: ffff88011fb9e780 RDI: ffff88011671be00 [ 507.708680] RBP: ffffc90009f0fbb0 R08: 000000000001e780 R09: ffffffff81854469 [ 507.716498] R10: ffffea0004594c00 R11: ffff880100f3cb80 R12: ffff88011671be00 [ 507.724254] R13: ffffffff81856a07 R14: ffff88011668f740 R15: ffff88011c203b44 [ 507.731994] </IRQ> [ 507.734647] ? kfree_skb_list+0x17/0x30 [ 507.739128] ? kfree_skbmem+0x59/0x60 [ 507.743367] ? kfree_skb+0x32/0xa0 [ 507.747344] kfree_skb_list+0x17/0x30 [ 507.751615] skb_release_data+0xfc/0x110 [ 507.756115] ? kfree_skb_list+0x17/0x30 [ 507.760553] skb_release_all+0x24/0x30 [ 507.764893] kfree_skb+0x32/0xa0 [ 507.768709] kfree_skb_list+0x17/0x30 [ 507.772945] skb_release_data+0xfc/0x110 [ 507.777461] ? kfree_skb_list+0x17/0x30 [ 507.781890] skb_release_all+0x24/0x30 [ 507.786242] kfree_skb+0x32/0xa0 [ 507.790044] kfree_skb_list+0x17/0x30 [ 507.794354] skb_release_data+0xfc/0x110 [ 507.798879] skb_release_all+0x24/0x30 [ 507.803227] __kfree_skb+0x12/0x20 [ 507.807215] tcp_recvmsg+0x2ca/0xb20 [ 507.811359] inet_recvmsg+0x3c/0xa0 [ 507.815397] sock_recvmsg+0x3d/0x50 [ 507.819452] SYSC_recvfrom+0xd5/0x140 [ 507.823656] ? ktime_get_ts64+0x4f/0x100 [ 507.828130] SyS_recvfrom+0xe/0x10 [ 507.832106] entry_SYSCALL_64_fastpath+0x1a/0xa9 [ 507.837280] RIP: 0033:0x7f214312553f [ 507.841354] RSP: 002b:00007ffcfa06e220 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 507.849440] RAX: ffffffffffffffda RBX: 00007f214310fb58 RCX: 00007f214312553f [ 507.857101] RDX: 0000000000004000 RSI: 000055c5d2be8ce0 RDI: 0000000000000003 [ 507.864817] RBP: 0000000000002705 R08: 0000000000000000 R09: 0000000000000000 [ 507.872494] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f214310fb58 [ 507.880139] R13: 0000000000001010 R14: 000055c5d2bff470 R15: 00007f214310fb00 [ 507.887799] Kernel Offset: disabled
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
Kernel Test Robot
#
# Automatically generated file; DO NOT EDIT.
# Linux/x86_64 4.11.0-rc6 Kernel Configuration
#CONFIG_64BIT=yCONFIG_X86_64=yCONFIG_X86=yCONFIG_INSTRUCTION_DECODER=y CONFIG_OUTPUT_FORMAT="elf64-x86-64" CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig" CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=yCONFIG_MMU=yCONFIG_ARCH_MMAP_RND_BITS_MIN=28 CONFIG_ARCH_MMAP_RND_BITS_MAX=32 CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8 CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16 CONFIG_NEED_DMA_MAP_STATE=y CONFIG_NEED_SG_DMA_LENGTH=y CONFIG_GENERIC_ISA_DMA=yCONFIG_GENERIC_BUG=y CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y CONFIG_GENERIC_HWEIGHT=y CONFIG_ARCH_MAY_HAVE_PC_FDC=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_GENERIC_CALIBRATE_DELAY=y CONFIG_ARCH_HAS_CPU_RELAX=y CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y CONFIG_HAVE_SETUP_PER_CPU_AREA=y CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y CONFIG_ARCH_WANT_GENERAL_HUGETLB=y CONFIG_ZONE_DMA32=yCONFIG_AUDIT_ARCH=y CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y CONFIG_HAVE_INTEL_TXT=yCONFIG_X86_64_SMP=yCONFIG_ARCH_SUPPORTS_UPROBES=y CONFIG_FIX_EARLYCON_MEM=yCONFIG_PGTABLE_LEVELS=4 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" CONFIG_IRQ_WORK=yCONFIG_BUILDTIME_EXTABLE_SORT=y CONFIG_THREAD_INFO_IN_TASK=y
#
# General setup
#CONFIG_INIT_ENV_ARG_LIMIT=32CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not setCONFIG_LOCALVERSION=""CONFIG_LOCALVERSION_AUTO=yCONFIG_HAVE_KERNEL_GZIP=yCONFIG_HAVE_KERNEL_BZIP2=yCONFIG_HAVE_KERNEL_LZMA=yCONFIG_HAVE_KERNEL_XZ=yCONFIG_HAVE_KERNEL_LZO=yCONFIG_HAVE_KERNEL_LZ4=yCONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not setCONFIG_DEFAULT_HOSTNAME="(none)"CONFIG_SWAP=yCONFIG_SYSVIPC=yCONFIG_SYSVIPC_SYSCTL=yCONFIG_POSIX_MQUEUE=yCONFIG_POSIX_MQUEUE_SYSCTL=yCONFIG_CROSS_MEMORY_ATTACH=yCONFIG_FHANDLE=yCONFIG_USELIB=yCONFIG_AUDIT=yCONFIG_HAVE_ARCH_AUDITSYSCALL=yCONFIG_AUDITSYSCALL=yCONFIG_AUDIT_WATCH=yCONFIG_AUDIT_TREE=y
#
# IRQ subsystem
#CONFIG_GENERIC_IRQ_PROBE=yCONFIG_GENERIC_IRQ_SHOW=yCONFIG_GENERIC_PENDING_IRQ=yCONFIG_IRQ_DOMAIN=yCONFIG_IRQ_DOMAIN_HIERARCHY=yCONFIG_GENERIC_MSI_IRQ=yCONFIG_GENERIC_MSI_IRQ_DOMAIN=y
# CONFIG_IRQ_DOMAIN_DEBUG is not setCONFIG_IRQ_FORCED_THREADING=yCONFIG_SPARSE_IRQ=yCONFIG_CLOCKSOURCE_WATCHDOG=yCONFIG_ARCH_CLOCKSOURCE_DATA=yCONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=yCONFIG_GENERIC_TIME_VSYSCALL=yCONFIG_GENERIC_CLOCKEVENTS=yCONFIG_GENERIC_CLOCKEVENTS_BROADCAST=yCONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=yCONFIG_GENERIC_CMOS_UPDATE=y
#
# Timers subsystem
#CONFIG_TICK_ONESHOT=yCONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
# CONFIG_NO_HZ_IDLE is not setCONFIG_NO_HZ_FULL=y
# CONFIG_NO_HZ_FULL_ALL is not set
# CONFIG_NO_HZ_FULL_SYSIDLE is not setCONFIG_NO_HZ=yCONFIG_HIGH_RES_TIMERS=y
#
# CPU/Task time and stats accounting
#CONFIG_VIRT_CPU_ACCOUNTING=yCONFIG_VIRT_CPU_ACCOUNTING_GEN=y
# CONFIG_IRQ_TIME_ACCOUNTING is not setCONFIG_BSD_PROCESS_ACCT=yCONFIG_BSD_PROCESS_ACCT_V3=yCONFIG_TASKSTATS=yCONFIG_TASK_DELAY_ACCT=yCONFIG_TASK_XACCT=yCONFIG_TASK_IO_ACCOUNTING=y
#
# RCU Subsystem
#CONFIG_TREE_RCU=y
# CONFIG_RCU_EXPERT is not setCONFIG_SRCU=yCONFIG_TASKS_RCU=yCONFIG_RCU_STALL_COMMON=yCONFIG_CONTEXT_TRACKING=y
# CONFIG_CONTEXT_TRACKING_FORCE is not set
# CONFIG_TREE_RCU_TRACE is not setCONFIG_RCU_NOCB_CPU=y
# CONFIG_RCU_NOCB_CPU_NONE is not set
# CONFIG_RCU_NOCB_CPU_ZERO is not setCONFIG_RCU_NOCB_CPU_ALL=yCONFIG_BUILD_BIN2C=yCONFIG_IKCONFIG=yCONFIG_IKCONFIG_PROC=yCONFIG_LOG_BUF_SHIFT=19CONFIG_LOG_CPU_MAX_BUF_SHIFT=12CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=yCONFIG_ARCH_SUPPORTS_NUMA_BALANCING=yCONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=yCONFIG_ARCH_SUPPORTS_INT128=yCONFIG_NUMA_BALANCING=yCONFIG_NUMA_BALANCING_DEFAULT_ENABLED=yCONFIG_CGROUPS=yCONFIG_PAGE_COUNTER=yCONFIG_MEMCG=yCONFIG_MEMCG_SWAP=yCONFIG_MEMCG_SWAP_ENABLED=yCONFIG_BLK_CGROUP=y
# CONFIG_DEBUG_BLK_CGROUP is not setCONFIG_CGROUP_WRITEBACK=yCONFIG_CGROUP_SCHED=yCONFIG_FAIR_GROUP_SCHED=yCONFIG_CFS_BANDWIDTH=yCONFIG_RT_GROUP_SCHED=y
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not setCONFIG_CGROUP_FREEZER=yCONFIG_CGROUP_HUGETLB=yCONFIG_CPUSETS=yCONFIG_PROC_PID_CPUSET=yCONFIG_CGROUP_DEVICE=y
# CONFIG_CGROUP_CPUACCT is not setCONFIG_CGROUP_PERF=y
# CONFIG_CGROUP_BPF is not set
# CONFIG_CGROUP_DEBUG is not setCONFIG_SOCK_CGROUP_DATA=yCONFIG_CHECKPOINT_RESTORE=yCONFIG_NAMESPACES=yCONFIG_UTS_NS=yCONFIG_IPC_NS=yCONFIG_USER_NS=yCONFIG_PID_NS=yCONFIG_NET_NS=yCONFIG_SCHED_AUTOGROUP=y
# CONFIG_SYSFS_DEPRECATED is not setCONFIG_RELAY=yCONFIG_BLK_DEV_INITRD=yCONFIG_INITRAMFS_SOURCE=""CONFIG_RD_GZIP=yCONFIG_RD_BZIP2=yCONFIG_RD_LZMA=yCONFIG_RD_XZ=yCONFIG_RD_LZO=yCONFIG_RD_LZ4=yCONFIG_INITRAMFS_COMPRESSION=".gz"CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not setCONFIG_SYSCTL=yCONFIG_ANON_INODES=yCONFIG_HAVE_UID16=yCONFIG_SYSCTL_EXCEPTION_TRACE=yCONFIG_HAVE_PCSPKR_PLATFORM=yCONFIG_BPF=yCONFIG_EXPERT=yCONFIG_UID16=yCONFIG_MULTIUSER=yCONFIG_SGETMASK_SYSCALL=yCONFIG_SYSFS_SYSCALL=y
# CONFIG_SYSCTL_SYSCALL is not setCONFIG_POSIX_TIMERS=yCONFIG_KALLSYMS=yCONFIG_KALLSYMS_ALL=yCONFIG_KALLSYMS_ABSOLUTE_PERCPU=yCONFIG_KALLSYMS_BASE_RELATIVE=yCONFIG_PRINTK=yCONFIG_PRINTK_NMI=yCONFIG_BUG=yCONFIG_ELF_CORE=yCONFIG_PCSPKR_PLATFORM=yCONFIG_BASE_FULL=yCONFIG_FUTEX=yCONFIG_EPOLL=yCONFIG_SIGNALFD=yCONFIG_TIMERFD=yCONFIG_EVENTFD=yCONFIG_BPF_SYSCALL=yCONFIG_SHMEM=yCONFIG_AIO=yCONFIG_ADVISE_SYSCALLS=yCONFIG_USERFAULTFD=yCONFIG_PCI_QUIRKS=yCONFIG_MEMBARRIER=yCONFIG_EMBEDDED=yCONFIG_HAVE_PERF_EVENTS=y
# CONFIG_PC104 is not set
#
# Kernel Performance Events And Counters
#CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set CONFIG_VM_EVENT_COUNTERS=y CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_MEMCG_SYSFS_ON is not set
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not setCONFIG_SLUB=y
# CONFIG_SLOB is not set
# CONFIG_SLAB_FREELIST_RANDOM is not set CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_SYSTEM_DATA_VERIFICATION is not set CONFIG_PROFILING=yCONFIG_TRACEPOINTS=yCONFIG_KEXEC_CORE=yCONFIG_OPROFILE=m CONFIG_OPROFILE_EVENT_MULTIPLEX=y CONFIG_HAVE_OPROFILE=y CONFIG_OPROFILE_NMI_TIMER=yCONFIG_KPROBES=yCONFIG_JUMP_LABEL=y
# CONFIG_STATIC_KEYS_SELFTEST is not set CONFIG_OPTPROBES=y CONFIG_KPROBES_ON_FTRACE=y
# CONFIG_UPROBES is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y CONFIG_ARCH_USE_BUILTIN_BSWAP=y CONFIG_KRETPROBES=y CONFIG_USER_RETURN_NOTIFIER=y CONFIG_HAVE_IOREMAP_PROT=y CONFIG_HAVE_KPROBES=y CONFIG_HAVE_KRETPROBES=y CONFIG_HAVE_OPTPROBES=y CONFIG_HAVE_KPROBES_ON_FTRACE=y CONFIG_HAVE_NMI=y CONFIG_HAVE_ARCH_TRACEHOOK=y CONFIG_HAVE_DMA_CONTIGUOUS=y CONFIG_GENERIC_SMP_IDLE_THREAD=y CONFIG_ARCH_HAS_SET_MEMORY=y CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y CONFIG_HAVE_CLK=y CONFIG_HAVE_DMA_API_DEBUG=y CONFIG_HAVE_HW_BREAKPOINT=y CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y CONFIG_HAVE_USER_RETURN_NOTIFIER=y CONFIG_HAVE_PERF_EVENTS_NMI=y CONFIG_HAVE_PERF_REGS=y CONFIG_HAVE_PERF_USER_STACK_DUMP=y CONFIG_HAVE_ARCH_JUMP_LABEL=y CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y CONFIG_HAVE_CMPXCHG_LOCAL=y CONFIG_HAVE_CMPXCHG_DOUBLE=y CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y CONFIG_HAVE_ARCH_SECCOMP_FILTER=y CONFIG_SECCOMP_FILTER=y CONFIG_HAVE_GCC_PLUGINS=y
# CONFIG_GCC_PLUGINS is not set CONFIG_HAVE_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR is not set CONFIG_CC_STACKPROTECTOR_NONE=y
# CONFIG_CC_STACKPROTECTOR_REGULAR is not set # CONFIG_CC_STACKPROTECTOR_STRONG is not set CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y CONFIG_HAVE_CONTEXT_TRACKING=y CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y CONFIG_HAVE_ARCH_HUGE_VMAP=y CONFIG_HAVE_ARCH_SOFT_DIRTY=y CONFIG_MODULES_USE_ELF_RELA=y CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y CONFIG_ARCH_HAS_ELF_RANDOMIZE=y CONFIG_HAVE_ARCH_MMAP_RND_BITS=y CONFIG_HAVE_EXIT_THREAD=y CONFIG_ARCH_MMAP_RND_BITS=28 CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8 CONFIG_HAVE_COPY_THREAD_TLS=y CONFIG_HAVE_STACK_VALIDATION=y
# CONFIG_HAVE_ARCH_HASH is not set
# CONFIG_ISA_BUS_API is not set CONFIG_OLD_SIGSUSPEND3=y CONFIG_COMPAT_OLD_SIGACTION=y
# CONFIG_CPU_NO_EFFICIENT_FFS is not set CONFIG_HAVE_ARCH_VMAP_STACK=y CONFIG_VMAP_STACK=y
# CONFIG_ARCH_OPTIONAL_KERNEL_RWX is not set # CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT is not set CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y CONFIG_STRICT_KERNEL_RWX=y CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y CONFIG_STRICT_MODULE_RWX=y
#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not setCONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not setCONFIG_SLABINFO=yCONFIG_RT_MUTEXES=yCONFIG_BASE_SMALL=0CONFIG_MODULES=yCONFIG_MODULE_FORCE_LOAD=yCONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
# CONFIG_MODULE_COMPRESS is not set
# CONFIG_TRIM_UNUSED_KSYMS is not setCONFIG_MODULES_TREE_LOOKUP=yCONFIG_BLOCK=yCONFIG_BLK_SCSI_REQUEST=yCONFIG_BLK_DEV_BSG=yCONFIG_BLK_DEV_BSGLIB=yCONFIG_BLK_DEV_INTEGRITY=y
# CONFIG_BLK_DEV_ZONED is not setCONFIG_BLK_DEV_THROTTLING=y
# CONFIG_BLK_CMDLINE_PARSER is not set
# CONFIG_BLK_WBT is not setCONFIG_BLK_DEBUG_FS=y
# CONFIG_BLK_SED_OPAL is not set
#
# Partition Types
#CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_AIX_PARTITION is not setCONFIG_OSF_PARTITION=yCONFIG_AMIGA_PARTITION=y
# CONFIG_ATARI_PARTITION is not setCONFIG_MAC_PARTITION=yCONFIG_MSDOS_PARTITION=yCONFIG_BSD_DISKLABEL=yCONFIG_MINIX_SUBPARTITION=yCONFIG_SOLARIS_X86_PARTITION=yCONFIG_UNIXWARE_DISKLABEL=y
# CONFIG_LDM_PARTITION is not setCONFIG_SGI_PARTITION=y
# CONFIG_ULTRIX_PARTITION is not setCONFIG_SUN_PARTITION=yCONFIG_KARMA_PARTITION=yCONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
# CONFIG_CMDLINE_PARTITION is not setCONFIG_BLOCK_COMPAT=yCONFIG_BLK_MQ_PCI=yCONFIG_BLK_MQ_VIRTIO=y
#
# IO Schedulers
#CONFIG_IOSCHED_NOOP=yCONFIG_IOSCHED_DEADLINE=yCONFIG_IOSCHED_CFQ=yCONFIG_CFQ_GROUP_IOSCHED=yCONFIG_DEFAULT_DEADLINE=y
# CONFIG_DEFAULT_CFQ is not set
# CONFIG_DEFAULT_NOOP is not setCONFIG_DEFAULT_IOSCHED="deadline"CONFIG_MQ_IOSCHED_DEADLINE=yCONFIG_PREEMPT_NOTIFIERS=yCONFIG_PADATA=yCONFIG_ASN1=yCONFIG_INLINE_SPIN_UNLOCK_IRQ=yCONFIG_INLINE_READ_UNLOCK=yCONFIG_INLINE_READ_UNLOCK_IRQ=yCONFIG_INLINE_WRITE_UNLOCK=yCONFIG_INLINE_WRITE_UNLOCK_IRQ=yCONFIG_ARCH_SUPPORTS_ATOMIC_RMW=yCONFIG_MUTEX_SPIN_ON_OWNER=yCONFIG_RWSEM_SPIN_ON_OWNER=yCONFIG_LOCK_SPIN_ON_OWNER=yCONFIG_ARCH_USE_QUEUED_SPINLOCKS=yCONFIG_QUEUED_SPINLOCKS=yCONFIG_ARCH_USE_QUEUED_RWLOCKS=yCONFIG_QUEUED_RWLOCKS=yCONFIG_FREEZER=y
#
# Processor type and features
#CONFIG_ZONE_DMA=yCONFIG_SMP=yCONFIG_X86_FEATURE_NAMES=yCONFIG_X86_FAST_FEATURE_TESTS=yCONFIG_X86_X2APIC=yCONFIG_X86_MPPARSE=y
# CONFIG_GOLDFISH is not setCONFIG_INTEL_RDT_A=yCONFIG_X86_EXTENDED_PLATFORM=y
# CONFIG_X86_NUMACHIP is not set
# CONFIG_X86_VSMP is not setCONFIG_X86_UV=y
# CONFIG_X86_GOLDFISH is not set
# CONFIG_X86_INTEL_MID is not setCONFIG_X86_INTEL_LPSS=y
# CONFIG_X86_AMD_PLATFORM_DEVICE is not setCONFIG_IOSF_MBI=y
# CONFIG_IOSF_MBI_DEBUG is not setCONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_SCHED_OMIT_FRAME_POINTER is not setCONFIG_HYPERVISOR_GUEST=yCONFIG_PARAVIRT=y
# CONFIG_PARAVIRT_DEBUG is not setCONFIG_PARAVIRT_SPINLOCKS=y
# CONFIG_QUEUED_LOCK_STAT is not setCONFIG_XEN=yCONFIG_XEN_DOM0=yCONFIG_XEN_PVHVM=yCONFIG_XEN_512GB=yCONFIG_XEN_SAVE_RESTORE=y
# CONFIG_XEN_DEBUG_FS is not set
# CONFIG_XEN_PVH is not setCONFIG_KVM_GUEST=y
# CONFIG_KVM_DEBUG_FS is not setCONFIG_PARAVIRT_TIME_ACCOUNTING=yCONFIG_PARAVIRT_CLOCK=yCONFIG_NO_BOOTMEM=y
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not setCONFIG_GENERIC_CPU=yCONFIG_X86_INTERNODE_CACHE_SHIFT=6CONFIG_X86_L1_CACHE_SHIFT=6CONFIG_X86_TSC=yCONFIG_X86_CMPXCHG64=yCONFIG_X86_CMOV=yCONFIG_X86_MINIMUM_CPU_FAMILY=64CONFIG_X86_DEBUGCTLMSR=y
# CONFIG_PROCESSOR_SELECT is not setCONFIG_CPU_SUP_INTEL=yCONFIG_CPU_SUP_AMD=yCONFIG_CPU_SUP_CENTAUR=yCONFIG_HPET_TIMER=yCONFIG_HPET_EMULATE_RTC=yCONFIG_DMI=yCONFIG_GART_IOMMU=y
# CONFIG_CALGARY_IOMMU is not setCONFIG_SWIOTLB=yCONFIG_IOMMU_HELPER=yCONFIG_MAXSMP=yCONFIG_NR_CPUS=8192CONFIG_SCHED_SMT=yCONFIG_SCHED_MC=yCONFIG_SCHED_MC_PRIO=y
# CONFIG_PREEMPT_NONE is not setCONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not setCONFIG_PREEMPT_COUNT=yCONFIG_X86_LOCAL_APIC=yCONFIG_X86_IO_APIC=yCONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=yCONFIG_X86_MCE=yCONFIG_X86_MCE_INTEL=yCONFIG_X86_MCE_AMD=yCONFIG_X86_MCE_THRESHOLD=yCONFIG_X86_MCE_INJECT=mCONFIG_X86_THERMAL_VECTOR=y
#
# Performance monitoring
#CONFIG_PERF_EVENTS_INTEL_UNCORE=y CONFIG_PERF_EVENTS_INTEL_RAPL=y CONFIG_PERF_EVENTS_INTEL_CSTATE=y
# CONFIG_PERF_EVENTS_AMD_POWER is not set
# CONFIG_VM86 is not setCONFIG_X86_16BIT=yCONFIG_X86_ESPFIX64=y CONFIG_X86_VSYSCALL_EMULATION=yCONFIG_I8K=mCONFIG_MICROCODE=yCONFIG_MICROCODE_INTEL=yCONFIG_MICROCODE_AMD=y CONFIG_MICROCODE_OLD_INTERFACE=y CONFIG_X86_MSR=yCONFIG_X86_CPUID=y CONFIG_ARCH_PHYS_ADDR_T_64BIT=y CONFIG_ARCH_DMA_ADDR_T_64BIT=y CONFIG_X86_DIRECT_GBPAGES=yCONFIG_NUMA=yCONFIG_AMD_NUMA=yCONFIG_X86_64_ACPI_NUMA=y CONFIG_NODES_SPAN_OTHER_NODES=y
# CONFIG_NUMA_EMU is not set CONFIG_NODES_SHIFT=10 CONFIG_ARCH_SPARSEMEM_ENABLE=y CONFIG_ARCH_SPARSEMEM_DEFAULT=y CONFIG_ARCH_SELECT_MEMORY_MODEL=y CONFIG_ARCH_MEMORY_PROBE=y CONFIG_ARCH_PROC_KCORE_TEXT=y CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000 CONFIG_SELECT_MEMORY_MODEL=y CONFIG_SPARSEMEM_MANUAL=yCONFIG_SPARSEMEM=yCONFIG_NEED_MULTIPLE_NODES=y CONFIG_HAVE_MEMORY_PRESENT=y CONFIG_SPARSEMEM_EXTREME=y CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER=y CONFIG_SPARSEMEM_VMEMMAP=y CONFIG_HAVE_MEMBLOCK=y CONFIG_HAVE_MEMBLOCK_NODE_MAP=y CONFIG_ARCH_DISCARD_MEMBLOCK=y CONFIG_MEMORY_ISOLATION=yCONFIG_MOVABLE_NODE=y CONFIG_HAVE_BOOTMEM_INFO_NODE=y CONFIG_MEMORY_HOTPLUG=y CONFIG_MEMORY_HOTPLUG_SPARSE=y
# CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set CONFIG_MEMORY_HOTREMOVE=y CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_MEMORY_BALLOON=y CONFIG_BALLOON_COMPACTION=yCONFIG_COMPACTION=yCONFIG_MIGRATION=y CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y CONFIG_PHYS_ADDR_T_64BIT=yCONFIG_BOUNCE=yCONFIG_VIRT_TO_BUS=yCONFIG_MMU_NOTIFIER=yCONFIG_KSM=yCONFIG_DEFAULT_MMAP_MIN_ADDR=4096 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y CONFIG_MEMORY_FAILURE=yCONFIG_HWPOISON_INJECT=m CONFIG_TRANSPARENT_HUGEPAGE=y CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set CONFIG_TRANSPARENT_HUGE_PAGECACHE=y CONFIG_CLEANCACHE=yCONFIG_FRONTSWAP=yCONFIG_CMA=y
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set CONFIG_CMA_AREAS=7
# CONFIG_MEM_SOFT_DIRTY is not set CONFIG_ZSWAP=yCONFIG_ZPOOL=yCONFIG_ZBUD=y
# CONFIG_Z3FOLD is not setCONFIG_ZSMALLOC=y
# CONFIG_PGTABLE_MAPPING is not set
# CONFIG_ZSMALLOC_STAT is not set CONFIG_GENERIC_EARLY_IOREMAP=y CONFIG_ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT=y # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
# CONFIG_IDLE_PAGE_TRACKING is not set CONFIG_ZONE_DEVICE=yCONFIG_FRAME_VECTOR=y CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y CONFIG_ARCH_HAS_PKEYS=y CONFIG_X86_PMEM_LEGACY_DEVICE=y CONFIG_X86_PMEM_LEGACY=m CONFIG_X86_CHECK_BIOS_CORRUPTION=y
# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set CONFIG_X86_RESERVE_LOW=64CONFIG_MTRR=yCONFIG_MTRR_SANITIZER=y CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0 CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1 CONFIG_X86_PAT=yCONFIG_ARCH_USES_PG_UNCACHED=y CONFIG_ARCH_RANDOM=yCONFIG_X86_SMAP=y
# CONFIG_X86_INTEL_MPX is not set CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y CONFIG_EFI=yCONFIG_EFI_STUB=y
# CONFIG_EFI_MIXED is not setCONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not setCONFIG_HZ_1000=yCONFIG_HZ=1000CONFIG_SCHED_HRTICK=yCONFIG_KEXEC=y
# CONFIG_KEXEC_FILE is not set CONFIG_CRASH_DUMP=yCONFIG_KEXEC_JUMP=y CONFIG_PHYSICAL_START=0x1000000 CONFIG_RELOCATABLE=y
# CONFIG_RANDOMIZE_BASE is not set CONFIG_PHYSICAL_ALIGN=0x1000000 CONFIG_HOTPLUG_CPU=y
# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
# CONFIG_COMPAT_VDSO is not set
# CONFIG_LEGACY_VSYSCALL_NATIVE is not set CONFIG_LEGACY_VSYSCALL_EMULATE=y
# CONFIG_LEGACY_VSYSCALL_NONE is not set
# CONFIG_CMDLINE_BOOL is not set CONFIG_MODIFY_LDT_SYSCALL=y CONFIG_HAVE_LIVEPATCH=y
# CONFIG_LIVEPATCH is not set CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y CONFIG_USE_PERCPU_NUMA_NODE_ID=y
#
# Power management and ACPI options
#CONFIG_ARCH_HIBERNATION_HEADER=yCONFIG_SUSPEND=yCONFIG_SUSPEND_FREEZER=y
# CONFIG_SUSPEND_SKIP_SYNC is not setCONFIG_HIBERNATE_CALLBACKS=yCONFIG_HIBERNATION=yCONFIG_PM_STD_PARTITION=""CONFIG_PM_SLEEP=yCONFIG_PM_SLEEP_SMP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not setCONFIG_PM=yCONFIG_PM_DEBUG=yCONFIG_PM_ADVANCED_DEBUG=yCONFIG_PM_TEST_SUSPEND=yCONFIG_PM_SLEEP_DEBUG=y
# CONFIG_DPM_WATCHDOG is not set
# CONFIG_PM_TRACE_RTC is not setCONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not setCONFIG_ACPI=yCONFIG_ACPI_LEGACY_TABLES_LOOKUP=yCONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=yCONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
# CONFIG_ACPI_DEBUGGER is not setCONFIG_ACPI_SLEEP=y
# CONFIG_ACPI_PROCFS_POWER is not setCONFIG_ACPI_REV_OVERRIDE_POSSIBLE=yCONFIG_ACPI_EC_DEBUGFS=mCONFIG_ACPI_AC=yCONFIG_ACPI_BATTERY=yCONFIG_ACPI_BUTTON=yCONFIG_ACPI_VIDEO=mCONFIG_ACPI_FAN=yCONFIG_ACPI_DOCK=yCONFIG_ACPI_CPU_FREQ_PSS=yCONFIG_ACPI_PROCESSOR_CSTATE=yCONFIG_ACPI_PROCESSOR_IDLE=yCONFIG_ACPI_CPPC_LIB=yCONFIG_ACPI_PROCESSOR=yCONFIG_ACPI_IPMI=mCONFIG_ACPI_HOTPLUG_CPU=yCONFIG_ACPI_PROCESSOR_AGGREGATOR=mCONFIG_ACPI_THERMAL=yCONFIG_ACPI_NUMA=y
# CONFIG_ACPI_CUSTOM_DSDT is not setCONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=yCONFIG_ACPI_TABLE_UPGRADE=yCONFIG_ACPI_DEBUG=yCONFIG_ACPI_PCI_SLOT=yCONFIG_X86_PM_TIMER=yCONFIG_ACPI_CONTAINER=yCONFIG_ACPI_HOTPLUG_MEMORY=yCONFIG_ACPI_HOTPLUG_IOAPIC=yCONFIG_ACPI_SBS=mCONFIG_ACPI_HED=yCONFIG_ACPI_CUSTOM_METHOD=mCONFIG_ACPI_BGRT=y
# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not setCONFIG_ACPI_NFIT=m
# CONFIG_ACPI_NFIT_DEBUG is not setCONFIG_HAVE_ACPI_APEI=yCONFIG_HAVE_ACPI_APEI_NMI=yCONFIG_ACPI_APEI=yCONFIG_ACPI_APEI_GHES=yCONFIG_ACPI_APEI_PCIEAER=yCONFIG_ACPI_APEI_MEMORY_FAILURE=yCONFIG_ACPI_APEI_EINJ=m
# CONFIG_ACPI_APEI_ERST_DEBUG is not set
# CONFIG_DPTF_POWER is not set
# CONFIG_ACPI_EXTLOG is not set
# CONFIG_PMIC_OPREGION is not set
# CONFIG_ACPI_CONFIGFS is not setCONFIG_SFI=y
#
# CPU Frequency scaling
#CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_GOV_ATTR_SET=y CONFIG_CPU_FREQ_GOV_COMMON=y
# CONFIG_CPU_FREQ_STAT is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=y CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
# CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set
#
# CPU frequency scaling drivers
#CONFIG_X86_INTEL_PSTATE=yCONFIG_X86_PCC_CPUFREQ=mCONFIG_X86_ACPI_CPUFREQ=mCONFIG_X86_ACPI_CPUFREQ_CPB=yCONFIG_X86_POWERNOW_K8=mCONFIG_X86_AMD_FREQ_SENSITIVITY=m
# CONFIG_X86_SPEEDSTEP_CENTRINO is not setCONFIG_X86_P4_CLOCKMOD=m
#
# shared options # CONFIG_X86_SPEEDSTEP_LIB=m
#
# CPU Idle
#CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_GOV_LADDER is not setCONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not setCONFIG_INTEL_IDLE=y
#
# Bus options (PCI etc.)
#CONFIG_PCI=yCONFIG_PCI_DIRECT=yCONFIG_PCI_MMCONFIG=yCONFIG_PCI_XEN=yCONFIG_PCI_DOMAINS=y
# CONFIG_PCI_CNB20LE_QUIRK is not setCONFIG_PCIEPORTBUS=yCONFIG_HOTPLUG_PCI_PCIE=yCONFIG_PCIEAER=yCONFIG_PCIE_ECRC=yCONFIG_PCIEAER_INJECT=mCONFIG_PCIEASPM=y
# CONFIG_PCIEASPM_DEBUG is not setCONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not setCONFIG_PCIE_PME=y
# CONFIG_PCIE_DPC is not set
# CONFIG_PCIE_PTM is not setCONFIG_PCI_BUS_ADDR_T_64BIT=yCONFIG_PCI_MSI=yCONFIG_PCI_MSI_IRQ_DOMAIN=y
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_REALLOC_ENABLE_AUTO is not setCONFIG_PCI_STUB=y
# CONFIG_XEN_PCIDEV_FRONTEND is not setCONFIG_HT_IRQ=yCONFIG_PCI_ATS=yCONFIG_PCI_IOV=yCONFIG_PCI_PRI=yCONFIG_PCI_PASID=yCONFIG_PCI_LABEL=y
# CONFIG_PCI_HYPERV is not setCONFIG_HOTPLUG_PCI=yCONFIG_HOTPLUG_PCI_ACPI=yCONFIG_HOTPLUG_PCI_ACPI_IBM=m
# CONFIG_HOTPLUG_PCI_CPCI is not setCONFIG_HOTPLUG_PCI_SHPC=m
#
# DesignWare PCI Core Support
#
# CONFIG_PCIE_DW_PLAT is not set
#
# PCI host controller drivers
#
# CONFIG_VMD is not set
# CONFIG_ISA_BUS is not setCONFIG_ISA_DMA_API=yCONFIG_AMD_NB=yCONFIG_PCCARD=y
# CONFIG_PCMCIA is not setCONFIG_CARDBUS=y
#
# PC-card bridges
#CONFIG_YENTA=mCONFIG_YENTA_O2=yCONFIG_YENTA_RICOH=yCONFIG_YENTA_TI=yCONFIG_YENTA_ENE_TUNE=yCONFIG_YENTA_TOSHIBA=y
# CONFIG_RAPIDIO is not set
# CONFIG_X86_SYSFB is not set
#
# Executable file formats / Emulations
#CONFIG_BINFMT_ELF=yCONFIG_COMPAT_BINFMT_ELF=yCONFIG_ELFCORE=yCONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=yCONFIG_BINFMT_SCRIPT=y
# CONFIG_HAVE_AOUT is not setCONFIG_BINFMT_MISC=mCONFIG_COREDUMP=yCONFIG_IA32_EMULATION=y
# CONFIG_IA32_AOUT is not set
# CONFIG_X86_X32 is not setCONFIG_COMPAT_32=yCONFIG_COMPAT=yCONFIG_COMPAT_FOR_U64_ALIGNMENT=yCONFIG_SYSVIPC_COMPAT=yCONFIG_KEYS_COMPAT=yCONFIG_X86_DEV_DMA_OPS=yCONFIG_NET=yCONFIG_COMPAT_NETLINK_MESSAGES=yCONFIG_NET_INGRESS=yCONFIG_NET_EGRESS=y
#
# Networking options
#CONFIG_PACKET=yCONFIG_PACKET_DIAG=mCONFIG_UNIX=yCONFIG_UNIX_DIAG=mCONFIG_XFRM=yCONFIG_XFRM_ALGO=yCONFIG_XFRM_USER=yCONFIG_XFRM_SUB_POLICY=yCONFIG_XFRM_MIGRATE=yCONFIG_XFRM_STATISTICS=yCONFIG_XFRM_IPCOMP=mCONFIG_NET_KEY=mCONFIG_NET_KEY_MIGRATE=yCONFIG_INET=yCONFIG_IP_MULTICAST=yCONFIG_IP_ADVANCED_ROUTER=yCONFIG_IP_FIB_TRIE_STATS=yCONFIG_IP_MULTIPLE_TABLES=yCONFIG_IP_ROUTE_MULTIPATH=yCONFIG_IP_ROUTE_VERBOSE=yCONFIG_IP_ROUTE_CLASSID=yCONFIG_IP_PNP=yCONFIG_IP_PNP_DHCP=y
# CONFIG_IP_PNP_BOOTP is not set
# CONFIG_IP_PNP_RARP is not setCONFIG_NET_IPIP=mCONFIG_NET_IPGRE_DEMUX=mCONFIG_NET_IP_TUNNEL=mCONFIG_NET_IPGRE=mCONFIG_NET_IPGRE_BROADCAST=yCONFIG_IP_MROUTE=yCONFIG_IP_MROUTE_MULTIPLE_TABLES=yCONFIG_IP_PIMSM_V1=yCONFIG_IP_PIMSM_V2=yCONFIG_SYN_COOKIES=yCONFIG_NET_IPVTI=mCONFIG_NET_UDP_TUNNEL=m
# CONFIG_NET_FOU is not set
# CONFIG_NET_FOU_IP_TUNNELS is not setCONFIG_INET_AH=mCONFIG_INET_ESP=m
# CONFIG_INET_ESP_OFFLOAD is not setCONFIG_INET_IPCOMP=mCONFIG_INET_XFRM_TUNNEL=mCONFIG_INET_TUNNEL=mCONFIG_INET_XFRM_MODE_TRANSPORT=mCONFIG_INET_XFRM_MODE_TUNNEL=mCONFIG_INET_XFRM_MODE_BEET=mCONFIG_INET_DIAG=mCONFIG_INET_TCP_DIAG=mCONFIG_INET_UDP_DIAG=m
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not setCONFIG_TCP_CONG_ADVANCED=yCONFIG_TCP_CONG_BIC=mCONFIG_TCP_CONG_CUBIC=yCONFIG_TCP_CONG_WESTWOOD=mCONFIG_TCP_CONG_HTCP=mCONFIG_TCP_CONG_HSTCP=mCONFIG_TCP_CONG_HYBLA=mCONFIG_TCP_CONG_VEGAS=m
# CONFIG_TCP_CONG_NV is not setCONFIG_TCP_CONG_SCALABLE=mCONFIG_TCP_CONG_LP=mCONFIG_TCP_CONG_VENO=mCONFIG_TCP_CONG_YEAH=mCONFIG_TCP_CONG_ILLINOIS=m
# CONFIG_TCP_CONG_DCTCP is not set
# CONFIG_TCP_CONG_CDG is not set
# CONFIG_TCP_CONG_BBR is not setCONFIG_DEFAULT_CUBIC=y
# CONFIG_DEFAULT_RENO is not setCONFIG_DEFAULT_TCP_CONG="cubic"CONFIG_TCP_MD5SIG=yCONFIG_IPV6=yCONFIG_IPV6_ROUTER_PREF=yCONFIG_IPV6_ROUTE_INFO=yCONFIG_IPV6_OPTIMISTIC_DAD=yCONFIG_INET6_AH=mCONFIG_INET6_ESP=m
# CONFIG_INET6_ESP_OFFLOAD is not setCONFIG_INET6_IPCOMP=mCONFIG_IPV6_MIP6=m
# CONFIG_IPV6_ILA is not setCONFIG_INET6_XFRM_TUNNEL=mCONFIG_INET6_TUNNEL=mCONFIG_INET6_XFRM_MODE_TRANSPORT=mCONFIG_INET6_XFRM_MODE_TUNNEL=mCONFIG_INET6_XFRM_MODE_BEET=mCONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
# CONFIG_IPV6_VTI is not setCONFIG_IPV6_SIT=mCONFIG_IPV6_SIT_6RD=yCONFIG_IPV6_NDISC_NODETYPE=yCONFIG_IPV6_TUNNEL=m
# CONFIG_IPV6_GRE is not set
# CONFIG_IPV6_FOU is not set
# CONFIG_IPV6_FOU_TUNNEL is not setCONFIG_IPV6_MULTIPLE_TABLES=y
# CONFIG_IPV6_SUBTREES is not setCONFIG_IPV6_MROUTE=yCONFIG_IPV6_MROUTE_MULTIPLE_TABLES=yCONFIG_IPV6_PIMSM_V2=y
# CONFIG_IPV6_SEG6_LWTUNNEL is not set
# CONFIG_IPV6_SEG6_HMAC is not setCONFIG_NETLABEL=yCONFIG_NETWORK_SECMARK=yCONFIG_NET_PTP_CLASSIFY=yCONFIG_NETWORK_PHY_TIMESTAMPING=yCONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not setCONFIG_NETFILTER_ADVANCED=yCONFIG_BRIDGE_NETFILTER=m
#
# Core Netfilter Configuration
#CONFIG_NETFILTER_INGRESS=yCONFIG_NETFILTER_NETLINK=mCONFIG_NETFILTER_NETLINK_ACCT=mCONFIG_NETFILTER_NETLINK_QUEUE=mCONFIG_NETFILTER_NETLINK_LOG=mCONFIG_NF_CONNTRACK=mCONFIG_NF_LOG_COMMON=m
# CONFIG_NF_LOG_NETDEV is not setCONFIG_NF_CONNTRACK_MARK=yCONFIG_NF_CONNTRACK_SECMARK=yCONFIG_NF_CONNTRACK_ZONES=yCONFIG_NF_CONNTRACK_PROCFS=yCONFIG_NF_CONNTRACK_EVENTS=y
# CONFIG_NF_CONNTRACK_TIMEOUT is not setCONFIG_NF_CONNTRACK_TIMESTAMP=yCONFIG_NF_CONNTRACK_LABELS=yCONFIG_NF_CT_PROTO_DCCP=yCONFIG_NF_CT_PROTO_GRE=mCONFIG_NF_CT_PROTO_SCTP=yCONFIG_NF_CT_PROTO_UDPLITE=yCONFIG_NF_CONNTRACK_AMANDA=mCONFIG_NF_CONNTRACK_FTP=mCONFIG_NF_CONNTRACK_H323=mCONFIG_NF_CONNTRACK_IRC=mCONFIG_NF_CONNTRACK_BROADCAST=mCONFIG_NF_CONNTRACK_NETBIOS_NS=mCONFIG_NF_CONNTRACK_SNMP=mCONFIG_NF_CONNTRACK_PPTP=mCONFIG_NF_CONNTRACK_SANE=mCONFIG_NF_CONNTRACK_SIP=mCONFIG_NF_CONNTRACK_TFTP=mCONFIG_NF_CT_NETLINK=m
# CONFIG_NF_CT_NETLINK_TIMEOUT is not set
# CONFIG_NETFILTER_NETLINK_GLUE_CT is not setCONFIG_NF_NAT=mCONFIG_NF_NAT_NEEDED=yCONFIG_NF_NAT_PROTO_DCCP=yCONFIG_NF_NAT_PROTO_UDPLITE=yCONFIG_NF_NAT_PROTO_SCTP=yCONFIG_NF_NAT_AMANDA=mCONFIG_NF_NAT_FTP=mCONFIG_NF_NAT_IRC=mCONFIG_NF_NAT_SIP=mCONFIG_NF_NAT_TFTP=mCONFIG_NF_NAT_REDIRECT=mCONFIG_NETFILTER_SYNPROXY=mCONFIG_NF_TABLES=m
# CONFIG_NF_TABLES_INET is not set
# CONFIG_NF_TABLES_NETDEV is not setCONFIG_NFT_EXTHDR=mCONFIG_NFT_META=m
# CONFIG_NFT_RT is not set
# CONFIG_NFT_NUMGEN is not setCONFIG_NFT_CT=m
# CONFIG_NFT_SET_RBTREE is not set
# CONFIG_NFT_SET_HASH is not set
# CONFIG_NFT_SET_BITMAP is not setCONFIG_NFT_COUNTER=mCONFIG_NFT_LOG=mCONFIG_NFT_LIMIT=m
# CONFIG_NFT_MASQ is not set
# CONFIG_NFT_REDIR is not setCONFIG_NFT_NAT=m
# CONFIG_NFT_OBJREF is not set
# CONFIG_NFT_QUEUE is not set
# CONFIG_NFT_QUOTA is not set
# CONFIG_NFT_REJECT is not setCONFIG_NFT_COMPAT=mCONFIG_NFT_HASH=mCONFIG_NETFILTER_XTABLES=y
#
# Xtables combined modules
#CONFIG_NETFILTER_XT_MARK=mCONFIG_NETFILTER_XT_CONNMARK=mCONFIG_NETFILTER_XT_SET=m
#
# Xtables targets
#CONFIG_NETFILTER_XT_TARGET_AUDIT=mCONFIG_NETFILTER_XT_TARGET_CHECKSUM=mCONFIG_NETFILTER_XT_TARGET_CLASSIFY=mCONFIG_NETFILTER_XT_TARGET_CONNMARK=mCONFIG_NETFILTER_XT_TARGET_CONNSECMARK=mCONFIG_NETFILTER_XT_TARGET_CT=mCONFIG_NETFILTER_XT_TARGET_DSCP=mCONFIG_NETFILTER_XT_TARGET_HL=mCONFIG_NETFILTER_XT_TARGET_HMARK=mCONFIG_NETFILTER_XT_TARGET_IDLETIMER=mCONFIG_NETFILTER_XT_TARGET_LED=mCONFIG_NETFILTER_XT_TARGET_LOG=mCONFIG_NETFILTER_XT_TARGET_MARK=mCONFIG_NETFILTER_XT_NAT=mCONFIG_NETFILTER_XT_TARGET_NETMAP=mCONFIG_NETFILTER_XT_TARGET_NFLOG=mCONFIG_NETFILTER_XT_TARGET_NFQUEUE=mCONFIG_NETFILTER_XT_TARGET_NOTRACK=mCONFIG_NETFILTER_XT_TARGET_RATEEST=mCONFIG_NETFILTER_XT_TARGET_REDIRECT=mCONFIG_NETFILTER_XT_TARGET_TEE=mCONFIG_NETFILTER_XT_TARGET_TPROXY=mCONFIG_NETFILTER_XT_TARGET_TRACE=mCONFIG_NETFILTER_XT_TARGET_SECMARK=mCONFIG_NETFILTER_XT_TARGET_TCPMSS=mCONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m
#
# Xtables matches
#CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=mCONFIG_NETFILTER_XT_MATCH_BPF=m
# CONFIG_NETFILTER_XT_MATCH_CGROUP is not setCONFIG_NETFILTER_XT_MATCH_CLUSTER=mCONFIG_NETFILTER_XT_MATCH_COMMENT=mCONFIG_NETFILTER_XT_MATCH_CONNBYTES=mCONFIG_NETFILTER_XT_MATCH_CONNLABEL=mCONFIG_NETFILTER_XT_MATCH_CONNLIMIT=mCONFIG_NETFILTER_XT_MATCH_CONNMARK=mCONFIG_NETFILTER_XT_MATCH_CONNTRACK=mCONFIG_NETFILTER_XT_MATCH_CPU=mCONFIG_NETFILTER_XT_MATCH_DCCP=mCONFIG_NETFILTER_XT_MATCH_DEVGROUP=mCONFIG_NETFILTER_XT_MATCH_DSCP=mCONFIG_NETFILTER_XT_MATCH_ECN=mCONFIG_NETFILTER_XT_MATCH_ESP=mCONFIG_NETFILTER_XT_MATCH_HASHLIMIT=mCONFIG_NETFILTER_XT_MATCH_HELPER=mCONFIG_NETFILTER_XT_MATCH_HL=m
# CONFIG_NETFILTER_XT_MATCH_IPCOMP is not setCONFIG_NETFILTER_XT_MATCH_IPRANGE=mCONFIG_NETFILTER_XT_MATCH_IPVS=mCONFIG_NETFILTER_XT_MATCH_L2TP=mCONFIG_NETFILTER_XT_MATCH_LENGTH=mCONFIG_NETFILTER_XT_MATCH_LIMIT=mCONFIG_NETFILTER_XT_MATCH_MAC=mCONFIG_NETFILTER_XT_MATCH_MARK=mCONFIG_NETFILTER_XT_MATCH_MULTIPORT=mCONFIG_NETFILTER_XT_MATCH_NFACCT=mCONFIG_NETFILTER_XT_MATCH_OSF=mCONFIG_NETFILTER_XT_MATCH_OWNER=mCONFIG_NETFILTER_XT_MATCH_POLICY=mCONFIG_NETFILTER_XT_MATCH_PHYSDEV=mCONFIG_NETFILTER_XT_MATCH_PKTTYPE=mCONFIG_NETFILTER_XT_MATCH_QUOTA=mCONFIG_NETFILTER_XT_MATCH_RATEEST=mCONFIG_NETFILTER_XT_MATCH_REALM=mCONFIG_NETFILTER_XT_MATCH_RECENT=mCONFIG_NETFILTER_XT_MATCH_SCTP=mCONFIG_NETFILTER_XT_MATCH_STATE=mCONFIG_NETFILTER_XT_MATCH_STATISTIC=mCONFIG_NETFILTER_XT_MATCH_STRING=mCONFIG_NETFILTER_XT_MATCH_TCPMSS=mCONFIG_NETFILTER_XT_MATCH_TIME=mCONFIG_NETFILTER_XT_MATCH_U32=mCONFIG_IP_SET=mCONFIG_IP_SET_MAX=256CONFIG_IP_SET_BITMAP_IP=mCONFIG_IP_SET_BITMAP_IPMAC=mCONFIG_IP_SET_BITMAP_PORT=mCONFIG_IP_SET_HASH_IP=m
# CONFIG_IP_SET_HASH_IPMARK is not setCONFIG_IP_SET_HASH_IPPORT=mCONFIG_IP_SET_HASH_IPPORTIP=mCONFIG_IP_SET_HASH_IPPORTNET=m
# CONFIG_IP_SET_HASH_IPMAC is not set
# CONFIG_IP_SET_HASH_MAC is not set
# CONFIG_IP_SET_HASH_NETPORTNET is not setCONFIG_IP_SET_HASH_NET=m
# CONFIG_IP_SET_HASH_NETNET is not setCONFIG_IP_SET_HASH_NETPORT=mCONFIG_IP_SET_HASH_NETIFACE=mCONFIG_IP_SET_LIST_SET=mCONFIG_IP_VS=mCONFIG_IP_VS_IPV6=y
# CONFIG_IP_VS_DEBUG is not setCONFIG_IP_VS_TAB_BITS=12
#
# IPVS transport protocol load balancing support
#CONFIG_IP_VS_PROTO_TCP=yCONFIG_IP_VS_PROTO_UDP=yCONFIG_IP_VS_PROTO_AH_ESP=yCONFIG_IP_VS_PROTO_ESP=yCONFIG_IP_VS_PROTO_AH=yCONFIG_IP_VS_PROTO_SCTP=y
#
# IPVS scheduler
#CONFIG_IP_VS_RR=mCONFIG_IP_VS_WRR=mCONFIG_IP_VS_LC=mCONFIG_IP_VS_WLC=m
# CONFIG_IP_VS_FO is not set
# CONFIG_IP_VS_OVF is not setCONFIG_IP_VS_LBLC=mCONFIG_IP_VS_LBLCR=mCONFIG_IP_VS_DH=mCONFIG_IP_VS_SH=mCONFIG_IP_VS_SED=mCONFIG_IP_VS_NQ=m
#
# IPVS SH scheduler
#CONFIG_IP_VS_SH_TAB_BITS=8
#
# IPVS application helper
#CONFIG_IP_VS_FTP=mCONFIG_IP_VS_NFCT=yCONFIG_IP_VS_PE_SIP=m
#
# IP: Netfilter Configuration
#CONFIG_NF_DEFRAG_IPV4=mCONFIG_NF_CONNTRACK_IPV4=m
# CONFIG_NF_SOCKET_IPV4 is not setCONFIG_NF_TABLES_IPV4=mCONFIG_NFT_CHAIN_ROUTE_IPV4=m
# CONFIG_NFT_REJECT_IPV4 is not set
# CONFIG_NFT_DUP_IPV4 is not set
# CONFIG_NFT_FIB_IPV4 is not set
# CONFIG_NF_TABLES_ARP is not setCONFIG_NF_DUP_IPV4=m
# CONFIG_NF_LOG_ARP is not setCONFIG_NF_LOG_IPV4=mCONFIG_NF_REJECT_IPV4=mCONFIG_NF_NAT_IPV4=mCONFIG_NFT_CHAIN_NAT_IPV4=mCONFIG_NF_NAT_MASQUERADE_IPV4=mCONFIG_NF_NAT_SNMP_BASIC=mCONFIG_NF_NAT_PROTO_GRE=mCONFIG_NF_NAT_PPTP=mCONFIG_NF_NAT_H323=mCONFIG_IP_NF_IPTABLES=mCONFIG_IP_NF_MATCH_AH=mCONFIG_IP_NF_MATCH_ECN=mCONFIG_IP_NF_MATCH_RPFILTER=mCONFIG_IP_NF_MATCH_TTL=mCONFIG_IP_NF_FILTER=mCONFIG_IP_NF_TARGET_REJECT=mCONFIG_IP_NF_TARGET_SYNPROXY=mCONFIG_IP_NF_NAT=mCONFIG_IP_NF_TARGET_MASQUERADE=mCONFIG_IP_NF_TARGET_NETMAP=mCONFIG_IP_NF_TARGET_REDIRECT=mCONFIG_IP_NF_MANGLE=mCONFIG_IP_NF_TARGET_CLUSTERIP=mCONFIG_IP_NF_TARGET_ECN=mCONFIG_IP_NF_TARGET_TTL=mCONFIG_IP_NF_RAW=mCONFIG_IP_NF_SECURITY=mCONFIG_IP_NF_ARPTABLES=mCONFIG_IP_NF_ARPFILTER=mCONFIG_IP_NF_ARP_MANGLE=m
#
# IPv6: Netfilter Configuration
#CONFIG_NF_DEFRAG_IPV6=mCONFIG_NF_CONNTRACK_IPV6=m
# CONFIG_NF_SOCKET_IPV6 is not setCONFIG_NF_TABLES_IPV6=mCONFIG_NFT_CHAIN_ROUTE_IPV6=m
# CONFIG_NFT_REJECT_IPV6 is not set
# CONFIG_NFT_DUP_IPV6 is not set
# CONFIG_NFT_FIB_IPV6 is not setCONFIG_NF_DUP_IPV6=mCONFIG_NF_REJECT_IPV6=mCONFIG_NF_LOG_IPV6=mCONFIG_NF_NAT_IPV6=mCONFIG_NFT_CHAIN_NAT_IPV6=m
# CONFIG_NF_NAT_MASQUERADE_IPV6 is not setCONFIG_IP6_NF_IPTABLES=mCONFIG_IP6_NF_MATCH_AH=mCONFIG_IP6_NF_MATCH_EUI64=mCONFIG_IP6_NF_MATCH_FRAG=mCONFIG_IP6_NF_MATCH_OPTS=mCONFIG_IP6_NF_MATCH_HL=mCONFIG_IP6_NF_MATCH_IPV6HEADER=mCONFIG_IP6_NF_MATCH_MH=mCONFIG_IP6_NF_MATCH_RPFILTER=mCONFIG_IP6_NF_MATCH_RT=mCONFIG_IP6_NF_TARGET_HL=mCONFIG_IP6_NF_FILTER=mCONFIG_IP6_NF_TARGET_REJECT=mCONFIG_IP6_NF_TARGET_SYNPROXY=mCONFIG_IP6_NF_MANGLE=mCONFIG_IP6_NF_RAW=mCONFIG_IP6_NF_SECURITY=m
# CONFIG_IP6_NF_NAT is not setCONFIG_NF_TABLES_BRIDGE=m
# CONFIG_NFT_BRIDGE_META is not set
# CONFIG_NF_LOG_BRIDGE is not setCONFIG_BRIDGE_NF_EBTABLES=mCONFIG_BRIDGE_EBT_BROUTE=mCONFIG_BRIDGE_EBT_T_FILTER=mCONFIG_BRIDGE_EBT_T_NAT=mCONFIG_BRIDGE_EBT_802_3=mCONFIG_BRIDGE_EBT_AMONG=mCONFIG_BRIDGE_EBT_ARP=mCONFIG_BRIDGE_EBT_IP=mCONFIG_BRIDGE_EBT_IP6=mCONFIG_BRIDGE_EBT_LIMIT=mCONFIG_BRIDGE_EBT_MARK=mCONFIG_BRIDGE_EBT_PKTTYPE=mCONFIG_BRIDGE_EBT_STP=mCONFIG_BRIDGE_EBT_VLAN=mCONFIG_BRIDGE_EBT_ARPREPLY=mCONFIG_BRIDGE_EBT_DNAT=mCONFIG_BRIDGE_EBT_MARK_T=mCONFIG_BRIDGE_EBT_REDIRECT=mCONFIG_BRIDGE_EBT_SNAT=mCONFIG_BRIDGE_EBT_LOG=mCONFIG_BRIDGE_EBT_NFLOG=mCONFIG_IP_DCCP=mCONFIG_INET_DCCP_DIAG=m
#
# DCCP CCIDs Configuration
#
# CONFIG_IP_DCCP_CCID2_DEBUG is not setCONFIG_IP_DCCP_CCID3=y
# CONFIG_IP_DCCP_CCID3_DEBUG is not setCONFIG_IP_DCCP_TFRC_LIB=y
#
# DCCP Kernel Hacking
#
# CONFIG_IP_DCCP_DEBUG is not set
# CONFIG_NET_DCCPPROBE is not set CONFIG_IP_SCTP=mCONFIG_NET_SCTPPROBE=m
# CONFIG_SCTP_DBG_OBJCNT is not set
# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_MD5 is not set CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1=y
# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_NONE is not set CONFIG_SCTP_COOKIE_HMAC_MD5=y CONFIG_SCTP_COOKIE_HMAC_SHA1=y CONFIG_INET_SCTP_DIAG=m
# CONFIG_RDS is not setCONFIG_TIPC=mCONFIG_TIPC_MEDIA_UDP=yCONFIG_ATM=mCONFIG_ATM_CLIP=m
# CONFIG_ATM_CLIP_NO_ICMP is not set CONFIG_ATM_LANE=m
# CONFIG_ATM_MPOA is not set CONFIG_ATM_BR2684=m
# CONFIG_ATM_BR2684_IPFILTER is not set CONFIG_L2TP=mCONFIG_L2TP_DEBUGFS=mCONFIG_L2TP_V3=yCONFIG_L2TP_IP=mCONFIG_L2TP_ETH=mCONFIG_STP=mCONFIG_GARP=mCONFIG_MRP=mCONFIG_BRIDGE=m CONFIG_BRIDGE_IGMP_SNOOPING=y CONFIG_BRIDGE_VLAN_FILTERING=y CONFIG_HAVE_NET_DSA=y
# CONFIG_NET_DSA is not set CONFIG_VLAN_8021Q=mCONFIG_VLAN_8021Q_GVRP=y CONFIG_VLAN_8021Q_MVRP=y
# CONFIG_DECNET is not setCONFIG_LLC=m
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_6LOWPAN is not set CONFIG_IEEE802154=m
# CONFIG_IEEE802154_NL802154_EXPERIMENTAL is not set CONFIG_IEEE802154_SOCKET=m CONFIG_MAC802154=mCONFIG_NET_SCHED=y
#
# Queueing/Scheduling
#CONFIG_NET_SCH_CBQ=mCONFIG_NET_SCH_HTB=mCONFIG_NET_SCH_HFSC=mCONFIG_NET_SCH_ATM=mCONFIG_NET_SCH_PRIO=mCONFIG_NET_SCH_MULTIQ=mCONFIG_NET_SCH_RED=mCONFIG_NET_SCH_SFB=mCONFIG_NET_SCH_SFQ=mCONFIG_NET_SCH_TEQL=mCONFIG_NET_SCH_TBF=mCONFIG_NET_SCH_GRED=mCONFIG_NET_SCH_DSMARK=mCONFIG_NET_SCH_NETEM=mCONFIG_NET_SCH_DRR=mCONFIG_NET_SCH_MQPRIO=mCONFIG_NET_SCH_CHOKE=mCONFIG_NET_SCH_QFQ=mCONFIG_NET_SCH_CODEL=mCONFIG_NET_SCH_FQ_CODEL=m
# CONFIG_NET_SCH_FQ is not set
# CONFIG_NET_SCH_HHF is not set
# CONFIG_NET_SCH_PIE is not setCONFIG_NET_SCH_INGRESS=mCONFIG_NET_SCH_PLUG=m
# CONFIG_NET_SCH_DEFAULT is not set
#
# Classification
#CONFIG_NET_CLS=yCONFIG_NET_CLS_BASIC=mCONFIG_NET_CLS_TCINDEX=mCONFIG_NET_CLS_ROUTE4=mCONFIG_NET_CLS_FW=mCONFIG_NET_CLS_U32=mCONFIG_CLS_U32_PERF=yCONFIG_CLS_U32_MARK=yCONFIG_NET_CLS_RSVP=mCONFIG_NET_CLS_RSVP6=mCONFIG_NET_CLS_FLOW=mCONFIG_NET_CLS_CGROUP=yCONFIG_NET_CLS_BPF=m
# CONFIG_NET_CLS_FLOWER is not set
# CONFIG_NET_CLS_MATCHALL is not setCONFIG_NET_EMATCH=yCONFIG_NET_EMATCH_STACK=32CONFIG_NET_EMATCH_CMP=mCONFIG_NET_EMATCH_NBYTE=mCONFIG_NET_EMATCH_U32=mCONFIG_NET_EMATCH_META=mCONFIG_NET_EMATCH_TEXT=mCONFIG_NET_EMATCH_IPSET=mCONFIG_NET_CLS_ACT=yCONFIG_NET_ACT_POLICE=mCONFIG_NET_ACT_GACT=mCONFIG_GACT_PROB=yCONFIG_NET_ACT_MIRRED=m
# CONFIG_NET_ACT_SAMPLE is not setCONFIG_NET_ACT_IPT=mCONFIG_NET_ACT_NAT=mCONFIG_NET_ACT_PEDIT=mCONFIG_NET_ACT_SIMP=mCONFIG_NET_ACT_SKBEDIT=mCONFIG_NET_ACT_CSUM=m
# CONFIG_NET_ACT_VLAN is not set
# CONFIG_NET_ACT_BPF is not set
# CONFIG_NET_ACT_CONNMARK is not set
# CONFIG_NET_ACT_SKBMOD is not set
# CONFIG_NET_ACT_IFE is not set
# CONFIG_NET_ACT_TUNNEL_KEY is not setCONFIG_NET_CLS_IND=yCONFIG_NET_SCH_FIFO=yCONFIG_DCB=yCONFIG_DNS_RESOLVER=m
# CONFIG_BATMAN_ADV is not setCONFIG_OPENVSWITCH=mCONFIG_OPENVSWITCH_GRE=mCONFIG_OPENVSWITCH_VXLAN=mCONFIG_VSOCKETS=mCONFIG_VMWARE_VMCI_VSOCKETS=m
# CONFIG_VIRTIO_VSOCKETS is not setCONFIG_NETLINK_DIAG=mCONFIG_MPLS=yCONFIG_NET_MPLS_GSO=m
# CONFIG_MPLS_ROUTING is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_NET_NCSI is not setCONFIG_RPS=yCONFIG_RFS_ACCEL=yCONFIG_XPS=y
# CONFIG_CGROUP_NET_PRIO is not setCONFIG_CGROUP_NET_CLASSID=yCONFIG_NET_RX_BUSY_POLL=yCONFIG_BQL=yCONFIG_BPF_JIT=yCONFIG_NET_FLOW_LIMIT=y
#
# Network testing
#CONFIG_NET_PKTGEN=m
# CONFIG_NET_TCPPROBE is not setCONFIG_NET_DROP_MONITOR=y
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_STREAM_PARSER is not setCONFIG_FIB_RULES=yCONFIG_WIRELESS=yCONFIG_WIRELESS_EXT=yCONFIG_WEXT_CORE=yCONFIG_WEXT_PROC=yCONFIG_WEXT_PRIV=yCONFIG_CFG80211=m
# CONFIG_NL80211_TESTMODE is not set
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
# CONFIG_CFG80211_CERTIFICATION_ONUS is not setCONFIG_CFG80211_DEFAULT_PS=y
# CONFIG_CFG80211_DEBUGFS is not set
# CONFIG_CFG80211_INTERNAL_REGDB is not setCONFIG_CFG80211_CRDA_SUPPORT=yCONFIG_CFG80211_WEXT=yCONFIG_LIB80211=m
# CONFIG_LIB80211_DEBUG is not setCONFIG_MAC80211=mCONFIG_MAC80211_HAS_RC=yCONFIG_MAC80211_RC_MINSTREL=yCONFIG_MAC80211_RC_MINSTREL_HT=y
# CONFIG_MAC80211_RC_MINSTREL_VHT is not setCONFIG_MAC80211_RC_DEFAULT_MINSTREL=yCONFIG_MAC80211_RC_DEFAULT="minstrel_ht"CONFIG_MAC80211_MESH=yCONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_MESSAGE_TRACING is not set
# CONFIG_MAC80211_DEBUG_MENU is not setCONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_WIMAX is not setCONFIG_RFKILL=mCONFIG_RFKILL_LEDS=yCONFIG_RFKILL_INPUT=y
# CONFIG_RFKILL_GPIO is not setCONFIG_NET_9P=yCONFIG_NET_9P_VIRTIO=y
# CONFIG_NET_9P_DEBUG is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not setCONFIG_DST_CACHE=yCONFIG_GRO_CELLS=y
# CONFIG_NET_DEVLINK is not setCONFIG_MAY_USE_DEVLINK=yCONFIG_HAVE_EBPF_JIT=y
#
# Device Drivers
#
#
# Generic Driver Options
#CONFIG_UEVENT_HELPER=yCONFIG_UEVENT_HELPER_PATH=""CONFIG_DEVTMPFS=yCONFIG_DEVTMPFS_MOUNT=yCONFIG_STANDALONE=yCONFIG_PREVENT_FIRMWARE_BUILD=yCONFIG_FW_LOADER=y
# CONFIG_FIRMWARE_IN_KERNEL is not setCONFIG_EXTRA_FIRMWARE=""CONFIG_FW_LOADER_USER_HELPER=yCONFIG_FW_LOADER_USER_HELPER_FALLBACK=yCONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not setCONFIG_SYS_HYPERVISOR=y
# CONFIG_GENERIC_CPU_DEVICES is not setCONFIG_GENERIC_CPU_AUTOPROBE=yCONFIG_REGMAP=yCONFIG_REGMAP_I2C=yCONFIG_REGMAP_SPI=yCONFIG_DMA_SHARED_BUFFER=y
# CONFIG_DMA_FENCE_TRACE is not setCONFIG_DMA_CMA=y
#
# Default contiguous memory area size:
#CONFIG_CMA_SIZE_MBYTES=200CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_MAX is not setCONFIG_CMA_ALIGNMENT=8
#
# Bus devices
#CONFIG_CONNECTOR=yCONFIG_PROC_EVENTS=yCONFIG_MTD=m
# CONFIG_MTD_TESTS is not set
# CONFIG_MTD_REDBOOT_PARTS is not set
# CONFIG_MTD_CMDLINE_PARTS is not set
# CONFIG_MTD_AR7_PARTS is not set
#
# User Modules And Translation Layers
#CONFIG_MTD_BLKDEVS=mCONFIG_MTD_BLOCK=m
# CONFIG_MTD_BLOCK_RO is not set
# CONFIG_FTL is not set
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set
# CONFIG_SM_FTL is not set
# CONFIG_MTD_OOPS is not set
# CONFIG_MTD_SWAP is not set
# CONFIG_MTD_PARTITIONED_MASTER is not set
#
# RAM/ROM/Flash chip drivers
#
# CONFIG_MTD_CFI is not set
# CONFIG_MTD_JEDECPROBE is not setCONFIG_MTD_MAP_BANK_WIDTH_1=yCONFIG_MTD_MAP_BANK_WIDTH_2=yCONFIG_MTD_MAP_BANK_WIDTH_4=y
# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_32 is not setCONFIG_MTD_CFI_I1=yCONFIG_MTD_CFI_I2=y
# CONFIG_MTD_CFI_I4 is not set
# CONFIG_MTD_CFI_I8 is not set
# CONFIG_MTD_RAM is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set
#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_INTEL_VR_NOR is not set
# CONFIG_MTD_PLATRAM is not set
#
# Self-contained MTD device drivers
#
# CONFIG_MTD_PMC551 is not set
# CONFIG_MTD_DATAFLASH is not set
# CONFIG_MTD_SST25L is not set
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLOCK2MTD is not set
#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOCG3 is not set
# CONFIG_MTD_NAND is not set
# CONFIG_MTD_ONENAND is not set
#
# LPDDR & LPDDR2 PCM memory drivers
#
# CONFIG_MTD_LPDDR is not set
# CONFIG_MTD_SPI_NOR is not setCONFIG_MTD_UBI=mCONFIG_MTD_UBI_WL_THRESHOLD=4096CONFIG_MTD_UBI_BEB_LIMIT=20
# CONFIG_MTD_UBI_FASTMAP is not set
# CONFIG_MTD_UBI_GLUEBI is not set
# CONFIG_MTD_UBI_BLOCK is not set
# CONFIG_OF is not setCONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=yCONFIG_PARPORT=mCONFIG_PARPORT_PC=mCONFIG_PARPORT_SERIAL=m
# CONFIG_PARPORT_PC_FIFO is not set
# CONFIG_PARPORT_PC_SUPERIO is not set
# CONFIG_PARPORT_GSC is not set
# CONFIG_PARPORT_AX88796 is not setCONFIG_PARPORT_1284=yCONFIG_PARPORT_NOT_PC=yCONFIG_PNP=y
# CONFIG_PNP_DEBUG_MESSAGES is not set
#
# Protocols
#CONFIG_PNPACPI=yCONFIG_BLK_DEV=yCONFIG_BLK_DEV_NULL_BLK=mCONFIG_BLK_DEV_FD=m
# CONFIG_PARIDE is not setCONFIG_BLK_DEV_PCIESSD_MTIP32XX=m
# CONFIG_ZRAM is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not setCONFIG_BLK_DEV_LOOP=mCONFIG_BLK_DEV_LOOP_MIN_COUNT=0
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SKD is not setCONFIG_BLK_DEV_OSD=mCONFIG_BLK_DEV_SX8=mCONFIG_BLK_DEV_RAM=mCONFIG_BLK_DEV_RAM_COUNT=16CONFIG_BLK_DEV_RAM_SIZE=16384
# CONFIG_BLK_DEV_RAM_DAX is not setCONFIG_CDROM_PKTCDVD=mCONFIG_CDROM_PKTCDVD_BUFFERS=8
# CONFIG_CDROM_PKTCDVD_WCACHE is not setCONFIG_ATA_OVER_ETH=mCONFIG_XEN_BLKDEV_FRONTEND=m
# CONFIG_XEN_BLKDEV_BACKEND is not setCONFIG_VIRTIO_BLK=y
# CONFIG_VIRTIO_BLK_SCSI is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_BLK_DEV_RBD is not setCONFIG_BLK_DEV_RSXX=mCONFIG_NVME_CORE=mCONFIG_BLK_DEV_NVME=m
# CONFIG_BLK_DEV_NVME_SCSI is not set
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TARGET is not set
#
# Misc devices
#CONFIG_SENSORS_LIS3LV02D=m
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not setCONFIG_SGI_IOC4=mCONFIG_TIFM_CORE=mCONFIG_TIFM_7XX1=m
# CONFIG_ICS932S401 is not setCONFIG_ENCLOSURE_SERVICES=mCONFIG_SGI_XP=mCONFIG_HP_ILO=mCONFIG_SGI_GRU=m
# CONFIG_SGI_GRU_DEBUG is not setCONFIG_APDS9802ALS=mCONFIG_ISL29003=mCONFIG_ISL29020=mCONFIG_SENSORS_TSL2550=mCONFIG_SENSORS_BH1770=mCONFIG_SENSORS_APDS990X=m
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_TI_DAC7512 is not setCONFIG_VMWARE_BALLOON=m
# CONFIG_USB_SWITCH_FSA9480 is not set
# CONFIG_LATTICE_ECP3_CONFIG is not set
# CONFIG_SRAM is not set
# CONFIG_PANEL is not set
# CONFIG_C2PORT is not set
#
# EEPROM support
#CONFIG_EEPROM_AT24=m
# CONFIG_EEPROM_AT25 is not setCONFIG_EEPROM_LEGACY=mCONFIG_EEPROM_MAX6875=mCONFIG_EEPROM_93CX6=m
# CONFIG_EEPROM_93XX46 is not set
# CONFIG_EEPROM_IDT_89HPESX is not setCONFIG_CB710_CORE=m
# CONFIG_CB710_DEBUG is not setCONFIG_CB710_DEBUG_ASSUMPTIONS=y
#
# Texas Instruments shared transport line discipline #
# CONFIG_TI_ST is not set CONFIG_SENSORS_LIS3_I2C=m
#
# Altera FPGA firmware download module
#CONFIG_ALTERA_STAPL=mCONFIG_INTEL_MEI=yCONFIG_INTEL_MEI_ME=y
# CONFIG_INTEL_MEI_TXE is not setCONFIG_VMWARE_VMCI=m
#
# Intel MIC Bus Driver
#
# CONFIG_INTEL_MIC_BUS is not set
#
# SCIF Bus Driver
#
# CONFIG_SCIF_BUS is not set
#
# VOP Bus Driver
#
# CONFIG_VOP_BUS is not set
#
# Intel MIC Host Driver
#
#
# Intel MIC Card Driver
#
#
# SCIF Driver
#
#
# Intel MIC Coprocessor State Management (COSM) Drivers #
#
# VOP Driver
#
# CONFIG_GENWQE is not set
# CONFIG_ECHO is not set
# CONFIG_CXL_BASE is not set
# CONFIG_CXL_AFU_DRIVER_OPS is not setCONFIG_HAVE_IDE=y
# CONFIG_IDE is not set
#
# SCSI device support
#CONFIG_SCSI_MOD=yCONFIG_RAID_ATTRS=mCONFIG_SCSI=yCONFIG_SCSI_DMA=yCONFIG_SCSI_NETLINK=y
# CONFIG_SCSI_MQ_DEFAULT is not setCONFIG_SCSI_PROC_FS=y
#
# SCSI support type (disk, tape, CD-ROM)
#CONFIG_BLK_DEV_SD=mCONFIG_CHR_DEV_ST=mCONFIG_CHR_DEV_OSST=mCONFIG_BLK_DEV_SR=mCONFIG_BLK_DEV_SR_VENDOR=yCONFIG_CHR_DEV_SG=mCONFIG_CHR_DEV_SCH=mCONFIG_SCSI_ENCLOSURE=mCONFIG_SCSI_CONSTANTS=yCONFIG_SCSI_LOGGING=yCONFIG_SCSI_SCAN_ASYNC=y
#
# SCSI Transports
#CONFIG_SCSI_SPI_ATTRS=mCONFIG_SCSI_FC_ATTRS=mCONFIG_SCSI_ISCSI_ATTRS=mCONFIG_SCSI_SAS_ATTRS=mCONFIG_SCSI_SAS_LIBSAS=mCONFIG_SCSI_SAS_ATA=yCONFIG_SCSI_SAS_HOST_SMP=yCONFIG_SCSI_SRP_ATTRS=mCONFIG_SCSI_LOWLEVEL=yCONFIG_ISCSI_TCP=mCONFIG_ISCSI_BOOT_SYSFS=mCONFIG_SCSI_CXGB3_ISCSI=mCONFIG_SCSI_CXGB4_ISCSI=mCONFIG_SCSI_BNX2_ISCSI=mCONFIG_SCSI_BNX2X_FCOE=mCONFIG_BE2ISCSI=m
# CONFIG_BLK_DEV_3W_XXXX_RAID is not setCONFIG_SCSI_HPSA=mCONFIG_SCSI_3W_9XXX=mCONFIG_SCSI_3W_SAS=m
# CONFIG_SCSI_ACARD is not setCONFIG_SCSI_AACRAID=m
# CONFIG_SCSI_AIC7XXX is not setCONFIG_SCSI_AIC79XX=mCONFIG_AIC79XX_CMDS_PER_DEVICE=4CONFIG_AIC79XX_RESET_DELAY_MS=15000
# CONFIG_AIC79XX_DEBUG_ENABLE is not setCONFIG_AIC79XX_DEBUG_MASK=0
# CONFIG_AIC79XX_REG_PRETTY_PRINT is not set
# CONFIG_SCSI_AIC94XX is not setCONFIG_SCSI_MVSAS=m
# CONFIG_SCSI_MVSAS_DEBUG is not setCONFIG_SCSI_MVSAS_TASKLET=yCONFIG_SCSI_MVUMI=m
# CONFIG_SCSI_DPT_I2O is not set
# CONFIG_SCSI_ADVANSYS is not setCONFIG_SCSI_ARCMSR=m
# CONFIG_SCSI_ESAS2R is not set
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not setCONFIG_MEGARAID_SAS=mCONFIG_SCSI_MPT3SAS=mCONFIG_SCSI_MPT2SAS_MAX_SGE=128CONFIG_SCSI_MPT3SAS_MAX_SGE=128CONFIG_SCSI_MPT2SAS=m
# CONFIG_SCSI_SMARTPQI is not setCONFIG_SCSI_UFSHCD=mCONFIG_SCSI_UFSHCD_PCI=m
# CONFIG_SCSI_UFS_DWC_TC_PCI is not set
# CONFIG_SCSI_UFSHCD_PLATFORM is not setCONFIG_SCSI_HPTIOP=m
# CONFIG_SCSI_BUSLOGIC is not setCONFIG_VMWARE_PVSCSI=m
# CONFIG_XEN_SCSI_FRONTEND is not setCONFIG_HYPERV_STORAGE=mCONFIG_LIBFC=mCONFIG_LIBFCOE=mCONFIG_FCOE=mCONFIG_FCOE_FNIC=m
# CONFIG_SCSI_SNIC is not set
# CONFIG_SCSI_DMX3191D is not set
# CONFIG_SCSI_EATA is not set
# CONFIG_SCSI_FUTURE_DOMAIN is not set
# CONFIG_SCSI_GDTH is not setCONFIG_SCSI_ISCI=m
# CONFIG_SCSI_IPS is not setCONFIG_SCSI_INITIO=m
# CONFIG_SCSI_INIA100 is not set
# CONFIG_SCSI_PPA is not set
# CONFIG_SCSI_IMM is not setCONFIG_SCSI_STEX=m
# CONFIG_SCSI_SYM53C8XX_2 is not setCONFIG_SCSI_IPR=mCONFIG_SCSI_IPR_TRACE=yCONFIG_SCSI_IPR_DUMP=y
# CONFIG_SCSI_QLOGIC_1280 is not setCONFIG_SCSI_QLA_FC=m
# CONFIG_TCM_QLA2XXX is not setCONFIG_SCSI_QLA_ISCSI=m
# CONFIG_SCSI_LPFC is not set
# CONFIG_SCSI_DC395x is not set
# CONFIG_SCSI_AM53C974 is not set
# CONFIG_SCSI_WD719X is not setCONFIG_SCSI_DEBUG=mCONFIG_SCSI_PMCRAID=mCONFIG_SCSI_PM8001=m
# CONFIG_SCSI_BFA_FC is not setCONFIG_SCSI_VIRTIO=mCONFIG_SCSI_CHELSIO_FCOE=mCONFIG_SCSI_DH=yCONFIG_SCSI_DH_RDAC=yCONFIG_SCSI_DH_HP_SW=yCONFIG_SCSI_DH_EMC=yCONFIG_SCSI_DH_ALUA=yCONFIG_SCSI_OSD_INITIATOR=mCONFIG_SCSI_OSD_ULD=mCONFIG_SCSI_OSD_DPRINT_SENSE=1
# CONFIG_SCSI_OSD_DEBUG is not setCONFIG_ATA=m
# CONFIG_ATA_NONSTANDARD is not setCONFIG_ATA_VERBOSE_ERROR=yCONFIG_ATA_ACPI=y
# CONFIG_SATA_ZPODD is not setCONFIG_SATA_PMP=y
#
# Controllers with non-SFF native interface
#CONFIG_SATA_AHCI=mCONFIG_SATA_AHCI_PLATFORM=m
# CONFIG_SATA_INIC162X is not setCONFIG_SATA_ACARD_AHCI=mCONFIG_SATA_SIL24=mCONFIG_ATA_SFF=y
#
# SFF controllers with custom DMA interface
#CONFIG_PDC_ADMA=mCONFIG_SATA_QSTOR=mCONFIG_SATA_SX4=mCONFIG_ATA_BMDMA=y
#
# SATA SFF controllers with BMDMA
#CONFIG_ATA_PIIX=m
# CONFIG_SATA_DWC is not setCONFIG_SATA_MV=mCONFIG_SATA_NV=mCONFIG_SATA_PROMISE=mCONFIG_SATA_SIL=mCONFIG_SATA_SIS=mCONFIG_SATA_SVW=mCONFIG_SATA_ULI=mCONFIG_SATA_VIA=mCONFIG_SATA_VITESSE=m
#
# PATA SFF controllers with BMDMA
#CONFIG_PATA_ALI=mCONFIG_PATA_AMD=mCONFIG_PATA_ARTOP=mCONFIG_PATA_ATIIXP=mCONFIG_PATA_ATP867X=mCONFIG_PATA_CMD64X=m
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not setCONFIG_PATA_HPT366=mCONFIG_PATA_HPT37X=mCONFIG_PATA_HPT3X2N=mCONFIG_PATA_HPT3X3=m
# CONFIG_PATA_HPT3X3_DMA is not setCONFIG_PATA_IT8213=mCONFIG_PATA_IT821X=mCONFIG_PATA_JMICRON=mCONFIG_PATA_MARVELL=mCONFIG_PATA_NETCELL=mCONFIG_PATA_NINJA32=m
# CONFIG_PATA_NS87415 is not setCONFIG_PATA_OLDPIIX=m
# CONFIG_PATA_OPTIDMA is not setCONFIG_PATA_PDC2027X=mCONFIG_PATA_PDC_OLD=m
# CONFIG_PATA_RADISYS is not setCONFIG_PATA_RDC=mCONFIG_PATA_SCH=mCONFIG_PATA_SERVERWORKS=mCONFIG_PATA_SIL680=mCONFIG_PATA_SIS=mCONFIG_PATA_TOSHIBA=m
# CONFIG_PATA_TRIFLEX is not setCONFIG_PATA_VIA=m
# CONFIG_PATA_WINBOND is not set
#
# PIO-only SFF controllers
#
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_PLATFORM is not set
# CONFIG_PATA_RZ1000 is not set
#
# Generic fallback / legacy drivers
#CONFIG_PATA_ACPI=mCONFIG_ATA_GENERIC=m
# CONFIG_PATA_LEGACY is not set CONFIG_MD=yCONFIG_BLK_DEV_MD=yCONFIG_MD_AUTODETECT=yCONFIG_MD_LINEAR=mCONFIG_MD_RAID0=mCONFIG_MD_RAID1=mCONFIG_MD_RAID10=mCONFIG_MD_RAID456=mCONFIG_MD_MULTIPATH=mCONFIG_MD_FAULTY=m
# CONFIG_MD_CLUSTER is not set
# CONFIG_BCACHE is not set CONFIG_BLK_DEV_DM_BUILTIN=y CONFIG_BLK_DEV_DM=m
# CONFIG_DM_MQ_DEFAULT is not set CONFIG_DM_DEBUG=yCONFIG_DM_BUFIO=m
# CONFIG_DM_DEBUG_BLOCK_MANAGER_LOCKING is not set CONFIG_DM_BIO_PRISON=m CONFIG_DM_PERSISTENT_DATA=m CONFIG_DM_CRYPT=mCONFIG_DM_SNAPSHOT=m CONFIG_DM_THIN_PROVISIONING=m CONFIG_DM_CACHE=mCONFIG_DM_CACHE_SMQ=m CONFIG_DM_CACHE_CLEANER=m
# CONFIG_DM_ERA is not set CONFIG_DM_MIRROR=m CONFIG_DM_LOG_USERSPACE=mCONFIG_DM_RAID=mCONFIG_DM_ZERO=mCONFIG_DM_MULTIPATH=m CONFIG_DM_MULTIPATH_QL=m CONFIG_DM_MULTIPATH_ST=mCONFIG_DM_DELAY=mCONFIG_DM_UEVENT=yCONFIG_DM_FLAKEY=mCONFIG_DM_VERITY=m
# CONFIG_DM_VERITY_FEC is not set CONFIG_DM_SWITCH=m
# CONFIG_DM_LOG_WRITES is not set CONFIG_TARGET_CORE=mCONFIG_TCM_IBLOCK=mCONFIG_TCM_FILEIO=mCONFIG_TCM_PSCSI=m
# CONFIG_TCM_USER2 is not set CONFIG_LOOPBACK_TARGET=mCONFIG_TCM_FC=mCONFIG_ISCSI_TARGET=m
# CONFIG_ISCSI_TARGET_CXGB4 is not set
# CONFIG_SBP_TARGET is not set CONFIG_FUSION=yCONFIG_FUSION_SPI=m
# CONFIG_FUSION_FC is not set CONFIG_FUSION_SAS=m CONFIG_FUSION_MAX_SGE=128 CONFIG_FUSION_CTL=m CONFIG_FUSION_LOGGING=y
#
# IEEE 1394 (FireWire) support
#CONFIG_FIREWIRE=mCONFIG_FIREWIRE_OHCI=mCONFIG_FIREWIRE_SBP2=mCONFIG_FIREWIRE_NET=m
# CONFIG_FIREWIRE_NOSY is not setCONFIG_MACINTOSH_DRIVERS=yCONFIG_MAC_EMUMOUSEBTN=yCONFIG_NETDEVICES=yCONFIG_MII=yCONFIG_NET_CORE=yCONFIG_BONDING=mCONFIG_DUMMY=m
# CONFIG_EQUALIZER is not setCONFIG_NET_FC=yCONFIG_IFB=mCONFIG_NET_TEAM=mCONFIG_NET_TEAM_MODE_BROADCAST=mCONFIG_NET_TEAM_MODE_ROUNDROBIN=mCONFIG_NET_TEAM_MODE_RANDOM=mCONFIG_NET_TEAM_MODE_ACTIVEBACKUP=mCONFIG_NET_TEAM_MODE_LOADBALANCE=mCONFIG_MACVLAN=mCONFIG_MACVTAP=mCONFIG_VXLAN=m
# CONFIG_GENEVE is not set
# CONFIG_GTP is not set
# CONFIG_MACSEC is not setCONFIG_NETCONSOLE=mCONFIG_NETCONSOLE_DYNAMIC=yCONFIG_NETPOLL=yCONFIG_NET_POLL_CONTROLLER=yCONFIG_TUN=mCONFIG_TAP=m
# CONFIG_TUN_VNET_CROSS_LE is not setCONFIG_VETH=mCONFIG_VIRTIO_NET=yCONFIG_NLMON=m
# CONFIG_ARCNET is not set
# CONFIG_ATM_DRIVERS is not set
#
# CAIF transport drivers
#
#
# Distributed Switch Architecture drivers
#CONFIG_ETHERNET=yCONFIG_MDIO=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_NET_VENDOR_ADAPTEC is not setCONFIG_NET_VENDOR_AGERE=y
# CONFIG_ET131X is not setCONFIG_NET_VENDOR_ALACRITECH=y
# CONFIG_SLICOSS is not set
# CONFIG_NET_VENDOR_ALTEON is not set
# CONFIG_ALTERA_TSE is not setCONFIG_NET_VENDOR_AMAZON=y
# CONFIG_ENA_ETHERNET is not set
# CONFIG_NET_VENDOR_AMD is not setCONFIG_NET_VENDOR_AQUANTIA=y
# CONFIG_AQTION is not setCONFIG_NET_VENDOR_ARC=yCONFIG_NET_VENDOR_ATHEROS=yCONFIG_ATL2=mCONFIG_ATL1=mCONFIG_ATL1E=mCONFIG_ATL1C=mCONFIG_ALX=m
# CONFIG_NET_VENDOR_AURORA is not setCONFIG_NET_CADENCE=y
# CONFIG_MACB is not setCONFIG_NET_VENDOR_BROADCOM=yCONFIG_B44=mCONFIG_B44_PCI_AUTOSELECT=yCONFIG_B44_PCICORE_AUTOSELECT=yCONFIG_B44_PCI=y
# CONFIG_BCMGENET is not setCONFIG_BNX2=mCONFIG_CNIC=mCONFIG_TIGON3=yCONFIG_TIGON3_HWMON=y
# CONFIG_BNX2X is not set
# CONFIG_BNXT is not setCONFIG_NET_VENDOR_BROCADE=yCONFIG_BNA=mCONFIG_NET_VENDOR_CAVIUM=y
# CONFIG_THUNDER_NIC_PF is not set
# CONFIG_THUNDER_NIC_VF is not set
# CONFIG_THUNDER_NIC_BGX is not set
# CONFIG_THUNDER_NIC_RGX is not set
# CONFIG_LIQUIDIO is not set
# CONFIG_LIQUIDIO_VF is not setCONFIG_NET_VENDOR_CHELSIO=y
# CONFIG_CHELSIO_T1 is not setCONFIG_CHELSIO_T3=mCONFIG_CHELSIO_T4=m
# CONFIG_CHELSIO_T4_DCB is not setCONFIG_CHELSIO_T4VF=mCONFIG_CHELSIO_LIB=mCONFIG_NET_VENDOR_CISCO=yCONFIG_ENIC=m
# CONFIG_CX_ECAT is not setCONFIG_DNET=mCONFIG_NET_VENDOR_DEC=yCONFIG_NET_TULIP=yCONFIG_DE2104X=mCONFIG_DE2104X_DSL=0CONFIG_TULIP=y
# CONFIG_TULIP_MWI is not setCONFIG_TULIP_MMIO=y
# CONFIG_TULIP_NAPI is not setCONFIG_DE4X5=mCONFIG_WINBOND_840=mCONFIG_DM9102=mCONFIG_ULI526X=mCONFIG_PCMCIA_XIRCOM=m
# CONFIG_NET_VENDOR_DLINK is not setCONFIG_NET_VENDOR_EMULEX=yCONFIG_BE2NET=mCONFIG_BE2NET_HWMON=yCONFIG_NET_VENDOR_EZCHIP=y
# CONFIG_NET_VENDOR_EXAR is not set
# CONFIG_NET_VENDOR_HP is not setCONFIG_NET_VENDOR_INTEL=y
# CONFIG_E100 is not setCONFIG_E1000=yCONFIG_E1000E=yCONFIG_E1000E_HWTS=yCONFIG_IGB=yCONFIG_IGB_HWMON=yCONFIG_IGBVF=mCONFIG_IXGB=mCONFIG_IXGBE=yCONFIG_IXGBE_HWMON=yCONFIG_IXGBE_DCB=yCONFIG_IXGBEVF=mCONFIG_I40E=m
# CONFIG_I40E_DCB is not set
# CONFIG_I40EVF is not set
# CONFIG_FM10K is not set
# CONFIG_NET_VENDOR_I825XX is not setCONFIG_JME=mCONFIG_NET_VENDOR_MARVELL=yCONFIG_MVMDIO=mCONFIG_SKGE=mCONFIG_SKGE_DEBUG=yCONFIG_SKGE_GENESIS=yCONFIG_SKY2=mCONFIG_SKY2_DEBUG=yCONFIG_NET_VENDOR_MELLANOX=yCONFIG_MLX4_EN=mCONFIG_MLX4_EN_DCB=yCONFIG_MLX4_CORE=mCONFIG_MLX4_DEBUG=y
# CONFIG_MLX5_CORE is not set
# CONFIG_MLXSW_CORE is not set
# CONFIG_NET_VENDOR_MICREL is not setCONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_ENC28J60 is not set
# CONFIG_ENCX24J600 is not setCONFIG_NET_VENDOR_MYRI=yCONFIG_MYRI10GE=m
# CONFIG_FEALNX is not set
# CONFIG_NET_VENDOR_NATSEMI is not setCONFIG_NET_VENDOR_NETRONOME=y
# CONFIG_NFP is not set
# CONFIG_NET_VENDOR_NVIDIA is not setCONFIG_NET_VENDOR_OKI=yCONFIG_ETHOC=mCONFIG_NET_PACKET_ENGINE=y
# CONFIG_HAMACHI is not setCONFIG_YELLOWFIN=mCONFIG_NET_VENDOR_QLOGIC=yCONFIG_QLA3XXX=mCONFIG_QLCNIC=mCONFIG_QLCNIC_SRIOV=yCONFIG_QLCNIC_DCB=yCONFIG_QLCNIC_HWMON=yCONFIG_QLGE=mCONFIG_NETXEN_NIC=m
# CONFIG_QED is not setCONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_QCOM_EMAC is not setCONFIG_NET_VENDOR_REALTEK=y
# CONFIG_ATP is not setCONFIG_8139CP=yCONFIG_8139TOO=yCONFIG_8139TOO_PIO=y
# CONFIG_8139TOO_TUNE_TWISTER is not setCONFIG_8139TOO_8129=y
# CONFIG_8139_OLD_RX_RESET is not setCONFIG_R8169=yCONFIG_NET_VENDOR_RENESAS=y
# CONFIG_NET_VENDOR_RDC is not setCONFIG_NET_VENDOR_ROCKER=yCONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SILAN is not set
# CONFIG_NET_VENDOR_SIS is not setCONFIG_NET_VENDOR_SOLARFLARE=yCONFIG_SFC=mCONFIG_SFC_MTD=yCONFIG_SFC_MCDI_MON=yCONFIG_SFC_SRIOV=yCONFIG_SFC_MCDI_LOGGING=y
# CONFIG_SFC_FALCON is not setCONFIG_NET_VENDOR_SMSC=yCONFIG_EPIC100=m
# CONFIG_SMSC911X is not setCONFIG_SMSC9420=m
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_NET_VENDOR_SUN is not set
# CONFIG_NET_VENDOR_TEHUTI is not set
# CONFIG_NET_VENDOR_TI is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not setCONFIG_NET_VENDOR_SYNOPSYS=y
# CONFIG_DWC_XLGMAC is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_NET_SB1000 is not setCONFIG_MDIO_DEVICE=yCONFIG_MDIO_BITBANG=m
# CONFIG_MDIO_GPIO is not set
# CONFIG_MDIO_OCTEON is not set
# CONFIG_MDIO_THUNDER is not setCONFIG_PHYLIB=yCONFIG_SWPHY=y
# CONFIG_LED_TRIGGER_PHY is not set
#
# MII PHY device drivers
#CONFIG_AMD_PHY=m
# CONFIG_AQUANTIA_PHY is not setCONFIG_AT803X_PHY=m
# CONFIG_BCM7XXX_PHY is not setCONFIG_BCM87XX_PHY=mCONFIG_BCM_NET_PHYLIB=mCONFIG_BROADCOM_PHY=mCONFIG_CICADA_PHY=mCONFIG_DAVICOM_PHY=m
# CONFIG_DP83848_PHY is not set
# CONFIG_DP83867_PHY is not setCONFIG_FIXED_PHY=yCONFIG_ICPLUS_PHY=m
# CONFIG_INTEL_XWAY_PHY is not setCONFIG_LSI_ET1011C_PHY=mCONFIG_LXT_PHY=mCONFIG_MARVELL_PHY=mCONFIG_MICREL_PHY=m
# CONFIG_MICROCHIP_PHY is not set
# CONFIG_MICROSEMI_PHY is not setCONFIG_NATIONAL_PHY=mCONFIG_QSEMI_PHY=mCONFIG_REALTEK_PHY=mCONFIG_SMSC_PHY=mCONFIG_STE10XP=m
# CONFIG_TERANETICS_PHY is not setCONFIG_VITESSE_PHY=m
# CONFIG_XILINX_GMII2RGMII is not set
# CONFIG_MICREL_KS8995MA is not set
# CONFIG_PLIP is not setCONFIG_PPP=mCONFIG_PPP_BSDCOMP=mCONFIG_PPP_DEFLATE=mCONFIG_PPP_FILTER=yCONFIG_PPP_MPPE=mCONFIG_PPP_MULTILINK=yCONFIG_PPPOATM=mCONFIG_PPPOE=mCONFIG_PPTP=mCONFIG_PPPOL2TP=mCONFIG_PPP_ASYNC=mCONFIG_PPP_SYNC_TTY=mCONFIG_SLIP=mCONFIG_SLHC=mCONFIG_SLIP_COMPRESSED=yCONFIG_SLIP_SMART=y
# CONFIG_SLIP_MODE_SLIP6 is not setCONFIG_USB_NET_DRIVERS=yCONFIG_USB_CATC=yCONFIG_USB_KAWETH=yCONFIG_USB_PEGASUS=yCONFIG_USB_RTL8150=yCONFIG_USB_RTL8152=m
# CONFIG_USB_LAN78XX is not setCONFIG_USB_USBNET=yCONFIG_USB_NET_AX8817X=yCONFIG_USB_NET_AX88179_178A=mCONFIG_USB_NET_CDCETHER=yCONFIG_USB_NET_CDC_EEM=yCONFIG_USB_NET_CDC_NCM=m
# CONFIG_USB_NET_HUAWEI_CDC_NCM is not setCONFIG_USB_NET_CDC_MBIM=mCONFIG_USB_NET_DM9601=y
# CONFIG_USB_NET_SR9700 is not set
# CONFIG_USB_NET_SR9800 is not setCONFIG_USB_NET_SMSC75XX=yCONFIG_USB_NET_SMSC95XX=yCONFIG_USB_NET_GL620A=yCONFIG_USB_NET_NET1080=yCONFIG_USB_NET_PLUSB=yCONFIG_USB_NET_MCS7830=yCONFIG_USB_NET_RNDIS_HOST=yCONFIG_USB_NET_CDC_SUBSET_ENABLE=yCONFIG_USB_NET_CDC_SUBSET=yCONFIG_USB_ALI_M5632=yCONFIG_USB_AN2720=yCONFIG_USB_BELKIN=yCONFIG_USB_ARMLINUX=yCONFIG_USB_EPSON2888=yCONFIG_USB_KC2190=yCONFIG_USB_NET_ZAURUS=yCONFIG_USB_NET_CX82310_ETH=mCONFIG_USB_NET_KALMIA=mCONFIG_USB_NET_QMI_WWAN=mCONFIG_USB_HSO=mCONFIG_USB_NET_INT51X1=yCONFIG_USB_IPHETH=yCONFIG_USB_SIERRA_NET=yCONFIG_USB_VL600=m
# CONFIG_USB_NET_CH9200 is not setCONFIG_WLAN=y
# CONFIG_WIRELESS_WDS is not setCONFIG_WLAN_VENDOR_ADMTEK=y
# CONFIG_ADM8211 is not setCONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
# CONFIG_ATH5K is not set
# CONFIG_ATH5K_PCI is not set
# CONFIG_ATH9K is not set
# CONFIG_ATH9K_HTC is not set
# CONFIG_CARL9170 is not set
# CONFIG_ATH6KL is not set
# CONFIG_AR5523 is not set
# CONFIG_WIL6210 is not set
# CONFIG_ATH10K is not set
# CONFIG_WCN36XX is not setCONFIG_WLAN_VENDOR_ATMEL=y
# CONFIG_ATMEL is not set
# CONFIG_AT76C50X_USB is not setCONFIG_WLAN_VENDOR_BROADCOM=y
# CONFIG_B43 is not set
# CONFIG_B43LEGACY is not set
# CONFIG_BRCMSMAC is not set
# CONFIG_BRCMFMAC is not setCONFIG_WLAN_VENDOR_CISCO=y
# CONFIG_AIRO is not setCONFIG_WLAN_VENDOR_INTEL=y
# CONFIG_IPW2100 is not set
# CONFIG_IPW2200 is not set
# CONFIG_IWL4965 is not set
# CONFIG_IWL3945 is not set
# CONFIG_IWLWIFI is not setCONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
# CONFIG_HERMES is not set
# CONFIG_P54_COMMON is not set
# CONFIG_PRISM54 is not setCONFIG_WLAN_VENDOR_MARVELL=y
# CONFIG_LIBERTAS is not set
# CONFIG_LIBERTAS_THINFIRM is not set
# CONFIG_MWIFIEX is not set
# CONFIG_MWL8K is not setCONFIG_WLAN_VENDOR_MEDIATEK=y
# CONFIG_MT7601U is not setCONFIG_WLAN_VENDOR_RALINK=y
# CONFIG_RT2X00 is not setCONFIG_WLAN_VENDOR_REALTEK=y
# CONFIG_RTL8180 is not set
# CONFIG_RTL8187 is not setCONFIG_RTL_CARDS=m
# CONFIG_RTL8192CE is not set
# CONFIG_RTL8192SE is not set
# CONFIG_RTL8192DE is not set
# CONFIG_RTL8723AE is not set
# CONFIG_RTL8723BE is not set
# CONFIG_RTL8188EE is not set
# CONFIG_RTL8192EE is not set
# CONFIG_RTL8821AE is not set
# CONFIG_RTL8192CU is not set
# CONFIG_RTL8XXXU is not setCONFIG_WLAN_VENDOR_RSI=y
# CONFIG_RSI_91X is not setCONFIG_WLAN_VENDOR_ST=y
# CONFIG_CW1200 is not setCONFIG_WLAN_VENDOR_TI=y
# CONFIG_WL1251 is not set
# CONFIG_WL12XX is not set
# CONFIG_WL18XX is not set
# CONFIG_WLCORE is not setCONFIG_WLAN_VENDOR_ZYDAS=y
# CONFIG_USB_ZD1201 is not set
# CONFIG_ZD1211RW is not setCONFIG_MAC80211_HWSIM=m
# CONFIG_USB_NET_RNDIS_WLAN is not set
#
# Enable WiMAX (Networking options) to see the WiMAX drivers #CONFIG_WAN=y
# CONFIG_LANMEDIA is not setCONFIG_HDLC=mCONFIG_HDLC_RAW=m
# CONFIG_HDLC_RAW_ETH is not set CONFIG_HDLC_CISCO=mCONFIG_HDLC_FR=mCONFIG_HDLC_PPP=m
#
# X.25/LAPB support is disabled
#
# CONFIG_PCI200SYN is not set
# CONFIG_WANXL is not set
# CONFIG_PC300TOO is not set
# CONFIG_FARSYNC is not set
# CONFIG_DSCC4 is not setCONFIG_DLCI=mCONFIG_DLCI_MAX=8
# CONFIG_SBNI is not setCONFIG_IEEE802154_DRIVERS=mCONFIG_IEEE802154_FAKELB=m
# CONFIG_IEEE802154_AT86RF230 is not set
# CONFIG_IEEE802154_MRF24J40 is not set
# CONFIG_IEEE802154_CC2520 is not set
# CONFIG_IEEE802154_ATUSB is not set
# CONFIG_IEEE802154_ADF7242 is not set
# CONFIG_IEEE802154_CA8210 is not setCONFIG_XEN_NETDEV_FRONTEND=m
# CONFIG_XEN_NETDEV_BACKEND is not setCONFIG_VMXNET3=m
# CONFIG_FUJITSU_ES is not setCONFIG_HYPERV_NET=mCONFIG_ISDN=yCONFIG_ISDN_I4L=mCONFIG_ISDN_PPP=yCONFIG_ISDN_PPP_VJ=yCONFIG_ISDN_MPP=yCONFIG_IPPP_FILTER=y
# CONFIG_ISDN_PPP_BSDCOMP is not setCONFIG_ISDN_AUDIO=yCONFIG_ISDN_TTY_FAX=y
#
# ISDN feature submodules
#CONFIG_ISDN_DIVERSION=m
#
# ISDN4Linux hardware drivers
#
#
# Passive cards
#
# CONFIG_ISDN_DRV_HISAX is not setCONFIG_ISDN_CAPI=m
# CONFIG_CAPI_TRACE is not setCONFIG_ISDN_CAPI_CAPI20=mCONFIG_ISDN_CAPI_MIDDLEWARE=yCONFIG_ISDN_CAPI_CAPIDRV=m
# CONFIG_ISDN_CAPI_CAPIDRV_VERBOSE is not set
#
# CAPI hardware drivers
#CONFIG_CAPI_AVM=yCONFIG_ISDN_DRV_AVMB1_B1PCI=mCONFIG_ISDN_DRV_AVMB1_B1PCIV4=yCONFIG_ISDN_DRV_AVMB1_T1PCI=mCONFIG_ISDN_DRV_AVMB1_C4=m
# CONFIG_CAPI_EICON is not setCONFIG_ISDN_DRV_GIGASET=mCONFIG_GIGASET_CAPI=y
# CONFIG_GIGASET_I4L is not set
# CONFIG_GIGASET_DUMMYLL is not setCONFIG_GIGASET_BASE=mCONFIG_GIGASET_M105=mCONFIG_GIGASET_M101=m
# CONFIG_GIGASET_DEBUG is not setCONFIG_HYSDN=mCONFIG_HYSDN_CAPI=yCONFIG_MISDN=mCONFIG_MISDN_DSP=mCONFIG_MISDN_L1OIP=m
#
# mISDN hardware drivers
#CONFIG_MISDN_HFCPCI=mCONFIG_MISDN_HFCMULTI=mCONFIG_MISDN_HFCUSB=mCONFIG_MISDN_AVMFRITZ=mCONFIG_MISDN_SPEEDFAX=mCONFIG_MISDN_INFINEON=mCONFIG_MISDN_W6692=mCONFIG_MISDN_NETJET=mCONFIG_MISDN_IPAC=mCONFIG_MISDN_ISAR=mCONFIG_ISDN_HDLC=m
# CONFIG_NVM is not set
#
# Input device support
#CONFIG_INPUT=yCONFIG_INPUT_LEDS=yCONFIG_INPUT_FF_MEMLESS=mCONFIG_INPUT_POLLDEV=mCONFIG_INPUT_SPARSEKMAP=m
# CONFIG_INPUT_MATRIXKMAP is not set
#
# Userland interfaces
#CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not setCONFIG_INPUT_MOUSEDEV_SCREEN_X=1024CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not setCONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set
#
# Input Device Drivers
#CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not setCONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_GPIO is not set
# CONFIG_KEYBOARD_GPIO_POLLED is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_TM2_TOUCHKEY is not set
# CONFIG_KEYBOARD_XTKBD is not setCONFIG_INPUT_MOUSE=yCONFIG_MOUSE_PS2=yCONFIG_MOUSE_PS2_ALPS=yCONFIG_MOUSE_PS2_BYD=yCONFIG_MOUSE_PS2_LOGIPS2PP=yCONFIG_MOUSE_PS2_SYNAPTICS=yCONFIG_MOUSE_PS2_CYPRESS=yCONFIG_MOUSE_PS2_LIFEBOOK=yCONFIG_MOUSE_PS2_TRACKPOINT=yCONFIG_MOUSE_PS2_ELANTECH=yCONFIG_MOUSE_PS2_SENTELIC=y
# CONFIG_MOUSE_PS2_TOUCHKIT is not setCONFIG_MOUSE_PS2_FOCALTECH=y
# CONFIG_MOUSE_PS2_VMMOUSE is not setCONFIG_MOUSE_SERIAL=mCONFIG_MOUSE_APPLETOUCH=mCONFIG_MOUSE_BCM5974=mCONFIG_MOUSE_CYAPA=m
# CONFIG_MOUSE_ELAN_I2C is not setCONFIG_MOUSE_VSXXXAA=m
# CONFIG_MOUSE_GPIO is not setCONFIG_MOUSE_SYNAPTICS_I2C=mCONFIG_MOUSE_SYNAPTICS_USB=m
# CONFIG_INPUT_JOYSTICK is not setCONFIG_INPUT_TABLET=yCONFIG_TABLET_USB_ACECAD=mCONFIG_TABLET_USB_AIPTEK=mCONFIG_TABLET_USB_GTCO=m
# CONFIG_TABLET_USB_HANWANG is not setCONFIG_TABLET_USB_KBTAB=m
# CONFIG_TABLET_USB_PEGASUS is not set
# CONFIG_TABLET_SERIAL_WACOM4 is not setCONFIG_INPUT_TOUCHSCREEN=yCONFIG_TOUCHSCREEN_PROPERTIES=y
# CONFIG_TOUCHSCREEN_ADS7846 is not set
# CONFIG_TOUCHSCREEN_AD7877 is not set
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_CYTTSP4_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_EGALAX_SERIAL is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GOODIX is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_EKTF2127 is not set
# CONFIG_TOUCHSCREEN_ELAN is not set
# CONFIG_TOUCHSCREEN_ELO is not setCONFIG_TOUCHSCREEN_WACOM_W8001=mCONFIG_TOUCHSCREEN_WACOM_I2C=m
# CONFIG_TOUCHSCREEN_MAX11801 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MELFAS_MIP4 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set
# CONFIG_TOUCHSCREEN_WM97XX is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2004 is not set
# CONFIG_TOUCHSCREEN_TSC2005 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_RM_TS is not set
# CONFIG_TOUCHSCREEN_SILEAD is not set
# CONFIG_TOUCHSCREEN_SIS_I2C is not set
# CONFIG_TOUCHSCREEN_ST1232 is not set
# CONFIG_TOUCHSCREEN_SUR40 is not set
# CONFIG_TOUCHSCREEN_SURFACE3_SPI is not set
# CONFIG_TOUCHSCREEN_SX8654 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_TOUCHSCREEN_ZET6223 is not set
# CONFIG_TOUCHSCREEN_ZFORCE is not set
# CONFIG_TOUCHSCREEN_ROHM_BU21023 is not setCONFIG_INPUT_MISC=y
# CONFIG_INPUT_AD714X is not set
# CONFIG_INPUT_BMA150 is not set
# CONFIG_INPUT_E3X0_BUTTON is not setCONFIG_INPUT_PCSPKR=m
# CONFIG_INPUT_MMA8450 is not setCONFIG_INPUT_APANEL=m
# CONFIG_INPUT_GP2A is not set
# CONFIG_INPUT_GPIO_BEEPER is not set
# CONFIG_INPUT_GPIO_TILT_POLLED is not set
# CONFIG_INPUT_GPIO_DECODER is not setCONFIG_INPUT_ATLAS_BTNS=mCONFIG_INPUT_ATI_REMOTE2=mCONFIG_INPUT_KEYSPAN_REMOTE=m
# CONFIG_INPUT_KXTJ9 is not setCONFIG_INPUT_POWERMATE=mCONFIG_INPUT_YEALINK=mCONFIG_INPUT_CM109=mCONFIG_INPUT_UINPUT=m
# CONFIG_INPUT_PCF8574 is not set
# CONFIG_INPUT_PWM_BEEPER is not set
# CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set
# CONFIG_INPUT_ADXL34X is not set
# CONFIG_INPUT_IMS_PCU is not set
# CONFIG_INPUT_CMA3000 is not setCONFIG_INPUT_XEN_KBDDEV_FRONTEND=m
# CONFIG_INPUT_IDEAPAD_SLIDEBAR is not set
# CONFIG_INPUT_DRV260X_HAPTICS is not set
# CONFIG_INPUT_DRV2665_HAPTICS is not set
# CONFIG_INPUT_DRV2667_HAPTICS is not set
# CONFIG_RMI4_CORE is not set
#
# Hardware I/O ports
#CONFIG_SERIO=yCONFIG_ARCH_MIGHT_HAVE_PC_SERIO=yCONFIG_SERIO_I8042=yCONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PARKBD is not set
# CONFIG_SERIO_PCIPS2 is not setCONFIG_SERIO_LIBPS2=yCONFIG_SERIO_RAW=mCONFIG_SERIO_ALTERA_PS2=m
# CONFIG_SERIO_PS2MULT is not setCONFIG_SERIO_ARC_PS2=mCONFIG_HYPERV_KEYBOARD=m
# CONFIG_USERIO is not set
# CONFIG_GAMEPORT is not set
#
# Character devices
#CONFIG_TTY=yCONFIG_VT=yCONFIG_CONSOLE_TRANSLATIONS=yCONFIG_VT_CONSOLE=yCONFIG_VT_CONSOLE_SLEEP=yCONFIG_HW_CONSOLE=yCONFIG_VT_HW_CONSOLE_BINDING=yCONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not setCONFIG_SERIAL_NONSTANDARD=y
# CONFIG_ROCKETPORT is not setCONFIG_CYCLADES=m
# CONFIG_CYZ_INTR is not setCONFIG_MOXA_INTELLIO=mCONFIG_MOXA_SMARTIO=mCONFIG_SYNCLINK=mCONFIG_SYNCLINKMP=mCONFIG_SYNCLINK_GT=mCONFIG_NOZOMI=m
# CONFIG_ISI is not setCONFIG_N_HDLC=mCONFIG_N_GSM=m
# CONFIG_TRACE_SINK is not setCONFIG_DEVMEM=y
# CONFIG_DEVKMEM is not set
#
# Serial drivers
#CONFIG_SERIAL_EARLYCON=y CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set CONFIG_SERIAL_8250_PNP=y
# CONFIG_SERIAL_8250_FINTEK is not set CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_DMA=y CONFIG_SERIAL_8250_PCI=y CONFIG_SERIAL_8250_EXAR=y CONFIG_SERIAL_8250_NR_UARTS=32 CONFIG_SERIAL_8250_RUNTIME_UARTS=4 CONFIG_SERIAL_8250_EXTENDED=y CONFIG_SERIAL_8250_MANY_PORTS=y CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_8250_DETECT_IRQ is not set CONFIG_SERIAL_8250_RSA=y
# CONFIG_SERIAL_8250_FSL is not set CONFIG_SERIAL_8250_DW=y
# CONFIG_SERIAL_8250_RT288X is not set CONFIG_SERIAL_8250_LPSS=y CONFIG_SERIAL_8250_MID=y
# CONFIG_SERIAL_8250_MOXA is not set
#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
# CONFIG_SERIAL_MAX310X is not set
# CONFIG_SERIAL_UARTLITE is not setCONFIG_SERIAL_CORE=yCONFIG_SERIAL_CORE_CONSOLE=yCONFIG_SERIAL_JSM=m
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_IFX6X60 is not setCONFIG_SERIAL_ARC=mCONFIG_SERIAL_ARC_NR_PORTS=1
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_TTY_PRINTK is not setCONFIG_PRINTER=m
# CONFIG_LP_CONSOLE is not setCONFIG_PPDEV=mCONFIG_HVC_DRIVER=yCONFIG_HVC_IRQ=yCONFIG_HVC_XEN=yCONFIG_HVC_XEN_FRONTEND=yCONFIG_VIRTIO_CONSOLE=yCONFIG_IPMI_HANDLER=m
# CONFIG_IPMI_PANIC_EVENT is not setCONFIG_IPMI_DEVICE_INTERFACE=mCONFIG_IPMI_SI=m
# CONFIG_IPMI_SSIF is not setCONFIG_IPMI_WATCHDOG=mCONFIG_IPMI_POWEROFF=mCONFIG_HW_RANDOM=yCONFIG_HW_RANDOM_TIMERIOMEM=mCONFIG_HW_RANDOM_INTEL=mCONFIG_HW_RANDOM_AMD=mCONFIG_HW_RANDOM_VIA=mCONFIG_HW_RANDOM_VIRTIO=yCONFIG_HW_RANDOM_TPM=mCONFIG_NVRAM=y
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_MWAVE is not setCONFIG_RAW_DRIVER=yCONFIG_MAX_RAW_DEVS=8192CONFIG_HPET=yCONFIG_HPET_MMAP=y
# CONFIG_HPET_MMAP_DEFAULT is not setCONFIG_HANGCHECK_TIMER=mCONFIG_UV_MMTIMER=mCONFIG_TCG_TPM=yCONFIG_TCG_TIS_CORE=yCONFIG_TCG_TIS=y
# CONFIG_TCG_TIS_SPI is not set
# CONFIG_TCG_TIS_I2C_ATMEL is not set
# CONFIG_TCG_TIS_I2C_INFINEON is not set
# CONFIG_TCG_TIS_I2C_NUVOTON is not setCONFIG_TCG_NSC=mCONFIG_TCG_ATMEL=mCONFIG_TCG_INFINEON=m
# CONFIG_TCG_XEN is not set
# CONFIG_TCG_CRB is not set
# CONFIG_TCG_VTPM_PROXY is not set
# CONFIG_TCG_TIS_ST33ZP24_I2C is not set
# CONFIG_TCG_TIS_ST33ZP24_SPI is not setCONFIG_TELCLOCK=mCONFIG_DEVPORT=y
# CONFIG_XILLYBUS is not set
#
# I2C support
#CONFIG_I2C=yCONFIG_ACPI_I2C_OPREGION=yCONFIG_I2C_BOARDINFO=yCONFIG_I2C_COMPAT=yCONFIG_I2C_CHARDEV=mCONFIG_I2C_MUX=m
#
# Multiplexer I2C Chip support
#
# CONFIG_I2C_MUX_GPIO is not set
# CONFIG_I2C_MUX_PCA9541 is not set
# CONFIG_I2C_MUX_PCA954x is not set
# CONFIG_I2C_MUX_PINCTRL is not set
# CONFIG_I2C_MUX_REG is not set
# CONFIG_I2C_MUX_MLXCPLD is not setCONFIG_I2C_HELPER_AUTO=yCONFIG_I2C_SMBUS=yCONFIG_I2C_ALGOBIT=yCONFIG_I2C_ALGOPCA=m
#
# I2C Hardware Bus support
#
#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not setCONFIG_I2C_AMD756=mCONFIG_I2C_AMD756_S4882=mCONFIG_I2C_AMD8111=mCONFIG_I2C_I801=yCONFIG_I2C_ISCH=mCONFIG_I2C_ISMT=mCONFIG_I2C_PIIX4=mCONFIG_I2C_NFORCE2=mCONFIG_I2C_NFORCE2_S4985=m
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not setCONFIG_I2C_SIS96X=mCONFIG_I2C_VIA=mCONFIG_I2C_VIAPRO=m
#
# ACPI drivers
#CONFIG_I2C_SCMI=m
#
# I2C system bus drivers (mostly embedded / system-on-chip) #
# CONFIG_I2C_CBUS_GPIO is not set CONFIG_I2C_DESIGNWARE_CORE=m CONFIG_I2C_DESIGNWARE_PLATFORM=m CONFIG_I2C_DESIGNWARE_PCI=m
# CONFIG_I2C_DESIGNWARE_BAYTRAIL is not set
# CONFIG_I2C_EMEV2 is not set
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set CONFIG_I2C_PCA_PLATFORM=m
# CONFIG_I2C_PXA_PCI is not set CONFIG_I2C_SIMTEC=m
# CONFIG_I2C_XILINX is not set
#
# External I2C/SMBus adapter drivers
#CONFIG_I2C_DIOLAN_U2C=mCONFIG_I2C_PARPORT=mCONFIG_I2C_PARPORT_LIGHT=m
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not setCONFIG_I2C_TINY_USB=mCONFIG_I2C_VIPERBOARD=m
#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_MLXCPLD is not setCONFIG_I2C_STUB=m
# CONFIG_I2C_SLAVE is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not setCONFIG_SPI=y
# CONFIG_SPI_DEBUG is not setCONFIG_SPI_MASTER=y
#
# SPI Master Controller Drivers
#
# CONFIG_SPI_ALTERA is not set
# CONFIG_SPI_AXI_SPI_ENGINE is not set
# CONFIG_SPI_BITBANG is not set
# CONFIG_SPI_BUTTERFLY is not set
# CONFIG_SPI_CADENCE is not setCONFIG_SPI_DESIGNWARE=m
# CONFIG_SPI_DW_PCI is not set
# CONFIG_SPI_DW_MMIO is not set
# CONFIG_SPI_GPIO is not set
# CONFIG_SPI_LM70_LLP is not set
# CONFIG_SPI_OC_TINY is not setCONFIG_SPI_PXA2XX=mCONFIG_SPI_PXA2XX_PCI=m
# CONFIG_SPI_ROCKCHIP is not set
# CONFIG_SPI_SC18IS602 is not set
# CONFIG_SPI_XCOMM is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_ZYNQMP_GQSPI is not set
#
# SPI Protocol Masters
#
# CONFIG_SPI_SPIDEV is not set
# CONFIG_SPI_LOOPBACK_TEST is not set
# CONFIG_SPI_TLE62X0 is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
#
# PPS support
#CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set
#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not setCONFIG_PPS_CLIENT_LDISC=mCONFIG_PPS_CLIENT_PARPORT=mCONFIG_PPS_CLIENT_GPIO=m
#
# PPS generators support
#
#
# PTP clock support
#CONFIG_PTP_1588_CLOCK=yCONFIG_DP83640_PHY=mCONFIG_PTP_1588_CLOCK_KVM=yCONFIG_PINCTRL=y
#
# Pin controllers
#CONFIG_PINMUX=yCONFIG_PINCONF=yCONFIG_GENERIC_PINCONF=y
# CONFIG_DEBUG_PINCTRL is not set
# CONFIG_PINCTRL_AMD is not set
# CONFIG_PINCTRL_SX150X is not setCONFIG_PINCTRL_BAYTRAIL=y
# CONFIG_PINCTRL_CHERRYVIEW is not set
# CONFIG_PINCTRL_BROXTON is not set
# CONFIG_PINCTRL_GEMINILAKE is not set
# CONFIG_PINCTRL_SUNRISEPOINT is not setCONFIG_GPIOLIB=yCONFIG_GPIO_ACPI=yCONFIG_GPIOLIB_IRQCHIP=y
# CONFIG_DEBUG_GPIO is not setCONFIG_GPIO_SYSFS=y
#
# Memory mapped GPIO drivers
#
# CONFIG_GPIO_AMDPT is not set
# CONFIG_GPIO_DWAPB is not set
# CONFIG_GPIO_EXAR is not set
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_ICH is not setCONFIG_GPIO_LYNXPOINT=mCONFIG_GPIO_MOCKUP=y
# CONFIG_GPIO_VX855 is not set
#
# Port-mapped I/O GPIO drivers
#
# CONFIG_GPIO_F7188X is not set
# CONFIG_GPIO_IT87 is not set
# CONFIG_GPIO_SCH is not set
# CONFIG_GPIO_SCH311X is not set
#
# I2C GPIO expanders
#
# CONFIG_GPIO_ADP5588 is not set
# CONFIG_GPIO_MAX7300 is not set
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_SX150X is not set
# CONFIG_GPIO_TPIC2810 is not set
#
# MFD GPIO expanders
#
#
# PCI GPIO expanders
#
# CONFIG_GPIO_AMD8111 is not set
# CONFIG_GPIO_ML_IOH is not set
# CONFIG_GPIO_PCI_IDIO_16 is not set
# CONFIG_GPIO_RDC321X is not set
#
# SPI GPIO expanders
#
# CONFIG_GPIO_MAX7301 is not set
# CONFIG_GPIO_MC33880 is not set
# CONFIG_GPIO_PISOSR is not set
#
# SPI or I2C GPIO expanders
#
#
# USB GPIO expanders
#
# CONFIG_GPIO_VIPERBOARD is not set
# CONFIG_W1 is not set
# CONFIG_POWER_AVS is not setCONFIG_POWER_RESET=y
# CONFIG_POWER_RESET_RESTART is not setCONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_TEST_POWER is not set
# CONFIG_BATTERY_DS2780 is not set
# CONFIG_BATTERY_DS2781 is not set
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_SBS is not set
# CONFIG_CHARGER_SBS is not set
# CONFIG_BATTERY_BQ27XXX is not set
# CONFIG_BATTERY_MAX17040 is not set
# CONFIG_BATTERY_MAX17042 is not set
# CONFIG_CHARGER_ISP1704 is not set
# CONFIG_CHARGER_MAX8903 is not set
# CONFIG_CHARGER_LP8727 is not set
# CONFIG_CHARGER_GPIO is not set
# CONFIG_CHARGER_BQ2415X is not set
# CONFIG_CHARGER_BQ24190 is not set
# CONFIG_CHARGER_BQ24257 is not set
# CONFIG_CHARGER_BQ24735 is not set
# CONFIG_CHARGER_BQ25890 is not setCONFIG_CHARGER_SMB347=m
# CONFIG_BATTERY_GAUGE_LTC2941 is not set
# CONFIG_CHARGER_RT9455 is not setCONFIG_HWMON=yCONFIG_HWMON_VID=m
# CONFIG_HWMON_DEBUG_CHIP is not set
#
# Native drivers
#CONFIG_SENSORS_ABITUGURU=mCONFIG_SENSORS_ABITUGURU3=m
# CONFIG_SENSORS_AD7314 is not setCONFIG_SENSORS_AD7414=mCONFIG_SENSORS_AD7418=mCONFIG_SENSORS_ADM1021=mCONFIG_SENSORS_ADM1025=mCONFIG_SENSORS_ADM1026=mCONFIG_SENSORS_ADM1029=mCONFIG_SENSORS_ADM1031=mCONFIG_SENSORS_ADM9240=mCONFIG_SENSORS_ADT7X10=m
# CONFIG_SENSORS_ADT7310 is not setCONFIG_SENSORS_ADT7410=mCONFIG_SENSORS_ADT7411=mCONFIG_SENSORS_ADT7462=mCONFIG_SENSORS_ADT7470=mCONFIG_SENSORS_ADT7475=mCONFIG_SENSORS_ASC7621=mCONFIG_SENSORS_K8TEMP=mCONFIG_SENSORS_K10TEMP=mCONFIG_SENSORS_FAM15H_POWER=mCONFIG_SENSORS_APPLESMC=mCONFIG_SENSORS_ASB100=mCONFIG_SENSORS_ATXP1=mCONFIG_SENSORS_DS620=mCONFIG_SENSORS_DS1621=mCONFIG_SENSORS_DELL_SMM=mCONFIG_SENSORS_I5K_AMB=mCONFIG_SENSORS_F71805F=mCONFIG_SENSORS_F71882FG=mCONFIG_SENSORS_F75375S=mCONFIG_SENSORS_FSCHMD=m
# CONFIG_SENSORS_FTSTEUTATES is not setCONFIG_SENSORS_GL518SM=mCONFIG_SENSORS_GL520SM=mCONFIG_SENSORS_G760A=m
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_GPIO_FAN is not set
# CONFIG_SENSORS_HIH6130 is not setCONFIG_SENSORS_IBMAEM=mCONFIG_SENSORS_IBMPEX=m
# CONFIG_SENSORS_I5500 is not setCONFIG_SENSORS_CORETEMP=mCONFIG_SENSORS_IT87=m
# CONFIG_SENSORS_JC42 is not set
# CONFIG_SENSORS_POWR1220 is not setCONFIG_SENSORS_LINEAGE=m
# CONFIG_SENSORS_LTC2945 is not set
# CONFIG_SENSORS_LTC2990 is not setCONFIG_SENSORS_LTC4151=mCONFIG_SENSORS_LTC4215=m
# CONFIG_SENSORS_LTC4222 is not setCONFIG_SENSORS_LTC4245=m
# CONFIG_SENSORS_LTC4260 is not setCONFIG_SENSORS_LTC4261=m
# CONFIG_SENSORS_MAX1111 is not setCONFIG_SENSORS_MAX16065=mCONFIG_SENSORS_MAX1619=mCONFIG_SENSORS_MAX1668=mCONFIG_SENSORS_MAX197=m
# CONFIG_SENSORS_MAX31722 is not setCONFIG_SENSORS_MAX6639=mCONFIG_SENSORS_MAX6642=mCONFIG_SENSORS_MAX6650=mCONFIG_SENSORS_MAX6697=m
# CONFIG_SENSORS_MAX31790 is not setCONFIG_SENSORS_MCP3021=m
# CONFIG_SENSORS_TC654 is not set
# CONFIG_SENSORS_ADCXX is not setCONFIG_SENSORS_LM63=m
# CONFIG_SENSORS_LM70 is not setCONFIG_SENSORS_LM73=mCONFIG_SENSORS_LM75=mCONFIG_SENSORS_LM77=mCONFIG_SENSORS_LM78=mCONFIG_SENSORS_LM80=mCONFIG_SENSORS_LM83=mCONFIG_SENSORS_LM85=mCONFIG_SENSORS_LM87=mCONFIG_SENSORS_LM90=mCONFIG_SENSORS_LM92=mCONFIG_SENSORS_LM93=mCONFIG_SENSORS_LM95234=mCONFIG_SENSORS_LM95241=mCONFIG_SENSORS_LM95245=mCONFIG_SENSORS_PC87360=mCONFIG_SENSORS_PC87427=mCONFIG_SENSORS_NTC_THERMISTOR=m
# CONFIG_SENSORS_NCT6683 is not setCONFIG_SENSORS_NCT6775=m
# CONFIG_SENSORS_NCT7802 is not set
# CONFIG_SENSORS_NCT7904 is not setCONFIG_SENSORS_PCF8591=mCONFIG_PMBUS=mCONFIG_SENSORS_PMBUS=mCONFIG_SENSORS_ADM1275=mCONFIG_SENSORS_LM25066=mCONFIG_SENSORS_LTC2978=m
# CONFIG_SENSORS_LTC3815 is not setCONFIG_SENSORS_MAX16064=m
# CONFIG_SENSORS_MAX20751 is not setCONFIG_SENSORS_MAX34440=mCONFIG_SENSORS_MAX8688=m
# CONFIG_SENSORS_TPS40422 is not setCONFIG_SENSORS_UCD9000=mCONFIG_SENSORS_UCD9200=mCONFIG_SENSORS_ZL6100=m
# CONFIG_SENSORS_SHT15 is not setCONFIG_SENSORS_SHT21=m
# CONFIG_SENSORS_SHT3x is not set
# CONFIG_SENSORS_SHTC1 is not setCONFIG_SENSORS_SIS5595=mCONFIG_SENSORS_DME1737=mCONFIG_SENSORS_EMC1403=m
# CONFIG_SENSORS_EMC2103 is not setCONFIG_SENSORS_EMC6W201=mCONFIG_SENSORS_SMSC47M1=mCONFIG_SENSORS_SMSC47M192=mCONFIG_SENSORS_SMSC47B397=mCONFIG_SENSORS_SCH56XX_COMMON=mCONFIG_SENSORS_SCH5627=mCONFIG_SENSORS_SCH5636=m
# CONFIG_SENSORS_STTS751 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_ADC128D818 is not setCONFIG_SENSORS_ADS1015=mCONFIG_SENSORS_ADS7828=m
# CONFIG_SENSORS_ADS7871 is not setCONFIG_SENSORS_AMC6821=mCONFIG_SENSORS_INA209=mCONFIG_SENSORS_INA2XX=m
# CONFIG_SENSORS_INA3221 is not set
# CONFIG_SENSORS_TC74 is not setCONFIG_SENSORS_THMC50=mCONFIG_SENSORS_TMP102=m
# CONFIG_SENSORS_TMP103 is not set
# CONFIG_SENSORS_TMP108 is not setCONFIG_SENSORS_TMP401=mCONFIG_SENSORS_TMP421=mCONFIG_SENSORS_VIA_CPUTEMP=mCONFIG_SENSORS_VIA686A=mCONFIG_SENSORS_VT1211=mCONFIG_SENSORS_VT8231=mCONFIG_SENSORS_W83781D=mCONFIG_SENSORS_W83791D=mCONFIG_SENSORS_W83792D=mCONFIG_SENSORS_W83793=mCONFIG_SENSORS_W83795=m
# CONFIG_SENSORS_W83795_FANCTRL is not setCONFIG_SENSORS_W83L785TS=mCONFIG_SENSORS_W83L786NG=mCONFIG_SENSORS_W83627HF=mCONFIG_SENSORS_W83627EHF=m
# CONFIG_SENSORS_XGENE is not set
#
# ACPI drivers
#CONFIG_SENSORS_ACPI_POWER=m CONFIG_SENSORS_ATK0110=mCONFIG_THERMAL=yCONFIG_THERMAL_HWMON=y CONFIG_THERMAL_WRITABLE_TRIPS=y CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set # CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set # CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR is not set CONFIG_THERMAL_GOV_FAIR_SHARE=y CONFIG_THERMAL_GOV_STEP_WISE=y CONFIG_THERMAL_GOV_BANG_BANG=y CONFIG_THERMAL_GOV_USER_SPACE=y
# CONFIG_THERMAL_GOV_POWER_ALLOCATOR is not set # CONFIG_THERMAL_EMULATION is not set CONFIG_INTEL_POWERCLAMP=m CONFIG_X86_PKG_TEMP_THERMAL=m
# CONFIG_INTEL_SOC_DTS_THERMAL is not set
#
# ACPI INT340X thermal drivers
#
# CONFIG_INT340X_THERMAL is not setCONFIG_INTEL_PCH_THERMAL=mCONFIG_WATCHDOG=yCONFIG_WATCHDOG_CORE=y
# CONFIG_WATCHDOG_NOWAYOUT is not set
# CONFIG_WATCHDOG_SYSFS is not set
#
# Watchdog Device Drivers
#CONFIG_SOFT_WATCHDOG=m
# CONFIG_WDAT_WDT is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_ZIIRAVE_WATCHDOG is not set
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_ACQUIRE_WDT is not set
# CONFIG_ADVANTECH_WDT is not setCONFIG_ALIM1535_WDT=mCONFIG_ALIM7101_WDT=mCONFIG_F71808E_WDT=mCONFIG_SP5100_TCO=mCONFIG_SBC_FITPC2_WATCHDOG=m
# CONFIG_EUROTECH_WDT is not setCONFIG_IB700_WDT=mCONFIG_IBMASR=m
# CONFIG_WAFER_WDT is not setCONFIG_I6300ESB_WDT=yCONFIG_IE6XX_WDT=mCONFIG_ITCO_WDT=yCONFIG_ITCO_VENDOR_SUPPORT=yCONFIG_IT8712F_WDT=mCONFIG_IT87_WDT=mCONFIG_HP_WATCHDOG=mCONFIG_HPWDT_NMI_DECODING=y
# CONFIG_SC1200_WDT is not set
# CONFIG_PC87413_WDT is not setCONFIG_NV_TCO=m
# CONFIG_60XX_WDT is not set
# CONFIG_CPU5_WDT is not setCONFIG_SMSC_SCH311X_WDT=m
# CONFIG_SMSC37B787_WDT is not setCONFIG_VIA_WDT=mCONFIG_W83627HF_WDT=mCONFIG_W83877F_WDT=mCONFIG_W83977F_WDT=mCONFIG_MACHZ_WDT=m
# CONFIG_SBC_EPX_C3_WATCHDOG is not set
# CONFIG_INTEL_MEI_WDT is not set
# CONFIG_NI903X_WDT is not set
# CONFIG_NIC7018_WDT is not set
# CONFIG_MEN_A21_WDT is not setCONFIG_XEN_WDT=m
#
# PCI-based Watchdog Cards
#CONFIG_PCIPCWATCHDOG=mCONFIG_WDTPCI=m
#
# USB-based Watchdog Cards
#CONFIG_USBPCWATCHDOG=m
#
# Watchdog Pretimeout Governors
#
# CONFIG_WATCHDOG_PRETIMEOUT_GOV is not setCONFIG_SSB_POSSIBLE=y
#
# Sonics Silicon Backplane
#CONFIG_SSB=mCONFIG_SSB_SPROM=yCONFIG_SSB_PCIHOST_POSSIBLE=yCONFIG_SSB_PCIHOST=y
# CONFIG_SSB_B43_PCI_BRIDGE is not setCONFIG_SSB_SDIOHOST_POSSIBLE=yCONFIG_SSB_SDIOHOST=y
# CONFIG_SSB_SILENT is not set
# CONFIG_SSB_DEBUG is not setCONFIG_SSB_DRIVER_PCICORE_POSSIBLE=yCONFIG_SSB_DRIVER_PCICORE=y
# CONFIG_SSB_DRIVER_GPIO is not setCONFIG_BCMA_POSSIBLE=y
#
# Broadcom specific AMBA
#CONFIG_BCMA=mCONFIG_BCMA_HOST_PCI_POSSIBLE=yCONFIG_BCMA_HOST_PCI=y
# CONFIG_BCMA_HOST_SOC is not setCONFIG_BCMA_DRIVER_PCI=yCONFIG_BCMA_DRIVER_GMAC_CMN=y
# CONFIG_BCMA_DRIVER_GPIO is not set
# CONFIG_BCMA_DEBUG is not set
#
# Multifunction device drivers
#CONFIG_MFD_CORE=y
# CONFIG_MFD_AS3711 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_AAT2870_CORE is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_AXP20X_I2C is not set
# CONFIG_MFD_CROS_EC is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_SPI is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_MFD_DA9062 is not set
# CONFIG_MFD_DA9063 is not set
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_DLN2 is not set
# CONFIG_MFD_MC13XXX_SPI is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_HTC_I2CPLD is not set
# CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not setCONFIG_LPC_ICH=yCONFIG_LPC_SCH=m
# CONFIG_INTEL_SOC_PMIC is not set
# CONFIG_MFD_INTEL_LPSS_ACPI is not set
# CONFIG_MFD_INTEL_LPSS_PCI is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_EZX_PCAP is not setCONFIG_MFD_VIPERBOARD=m
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_UCB1400_CORE is not set
# CONFIG_MFD_RDC321X is not setCONFIG_MFD_RTSX_PCI=m
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RTSX_USB is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_SEC_CORE is not set
# CONFIG_MFD_SI476X_CORE is not setCONFIG_MFD_SM501=m
# CONFIG_MFD_SM501_GPIO is not set
# CONFIG_MFD_SKY81452 is not set
# CONFIG_MFD_SMSC is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65086 is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_TPS65217 is not set
# CONFIG_MFD_TI_LP873X is not set
# CONFIG_MFD_TPS65218 is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65910 is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS65912_SPI is not set
# CONFIG_MFD_TPS80031 is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TMIO is not setCONFIG_MFD_VX855=m
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_ARIZONA_SPI is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM831X_SPI is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
# CONFIG_REGULATOR is not setCONFIG_MEDIA_SUPPORT=m
#
# Multimedia core support
#CONFIG_MEDIA_CAMERA_SUPPORT=yCONFIG_MEDIA_ANALOG_TV_SUPPORT=yCONFIG_MEDIA_DIGITAL_TV_SUPPORT=yCONFIG_MEDIA_RADIO_SUPPORT=y
# CONFIG_MEDIA_SDR_SUPPORT is not setCONFIG_MEDIA_RC_SUPPORT=y
# CONFIG_MEDIA_CEC_SUPPORT is not set
# CONFIG_MEDIA_CONTROLLER is not setCONFIG_VIDEO_DEV=mCONFIG_VIDEO_V4L2=m
# CONFIG_VIDEO_ADV_DEBUG is not set
# CONFIG_VIDEO_FIXED_MINOR_RANGES is not setCONFIG_VIDEO_TUNER=mCONFIG_VIDEOBUF_GEN=mCONFIG_VIDEOBUF_DMA_SG=mCONFIG_VIDEOBUF_VMALLOC=mCONFIG_VIDEOBUF_DVB=mCONFIG_VIDEOBUF2_CORE=mCONFIG_VIDEOBUF2_MEMOPS=mCONFIG_VIDEOBUF2_VMALLOC=mCONFIG_VIDEOBUF2_DMA_SG=mCONFIG_VIDEOBUF2_DVB=mCONFIG_DVB_CORE=mCONFIG_DVB_NET=yCONFIG_TTPCI_EEPROM=mCONFIG_DVB_MAX_ADAPTERS=8CONFIG_DVB_DYNAMIC_MINORS=y
# CONFIG_DVB_DEMUX_SECTION_LOSS_LOG is not set
#
# Media drivers
#CONFIG_RC_CORE=mCONFIG_RC_MAP=mCONFIG_RC_DECODERS=yCONFIG_LIRC=mCONFIG_IR_LIRC_CODEC=mCONFIG_IR_NEC_DECODER=mCONFIG_IR_RC5_DECODER=mCONFIG_IR_RC6_DECODER=mCONFIG_IR_JVC_DECODER=mCONFIG_IR_SONY_DECODER=mCONFIG_IR_SANYO_DECODER=mCONFIG_IR_SHARP_DECODER=mCONFIG_IR_MCE_KBD_DECODER=mCONFIG_IR_XMP_DECODER=mCONFIG_RC_DEVICES=yCONFIG_RC_ATI_REMOTE=mCONFIG_IR_ENE=m
# CONFIG_IR_HIX5HD2 is not setCONFIG_IR_IMON=mCONFIG_IR_MCEUSB=mCONFIG_IR_ITE_CIR=mCONFIG_IR_FINTEK=mCONFIG_IR_NUVOTON=mCONFIG_IR_REDRAT3=m
# CONFIG_IR_SPI is not setCONFIG_IR_STREAMZAP=mCONFIG_IR_WINBOND_CIR=m
# CONFIG_IR_IGORPLUGUSB is not setCONFIG_IR_IGUANA=mCONFIG_IR_TTUSBIR=m
# CONFIG_RC_LOOPBACK is not setCONFIG_IR_GPIO_CIR=m
# CONFIG_IR_SERIAL is not setCONFIG_MEDIA_USB_SUPPORT=y
#
# Webcam devices
#CONFIG_USB_VIDEO_CLASS=mCONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=yCONFIG_USB_GSPCA=mCONFIG_USB_M5602=mCONFIG_USB_STV06XX=mCONFIG_USB_GL860=mCONFIG_USB_GSPCA_BENQ=mCONFIG_USB_GSPCA_CONEX=mCONFIG_USB_GSPCA_CPIA1=m
# CONFIG_USB_GSPCA_DTCS033 is not setCONFIG_USB_GSPCA_ETOMS=mCONFIG_USB_GSPCA_FINEPIX=mCONFIG_USB_GSPCA_JEILINJ=mCONFIG_USB_GSPCA_JL2005BCD=m
# CONFIG_USB_GSPCA_KINECT is not setCONFIG_USB_GSPCA_KONICA=mCONFIG_USB_GSPCA_MARS=mCONFIG_USB_GSPCA_MR97310A=mCONFIG_USB_GSPCA_NW80X=mCONFIG_USB_GSPCA_OV519=mCONFIG_USB_GSPCA_OV534=mCONFIG_USB_GSPCA_OV534_9=mCONFIG_USB_GSPCA_PAC207=mCONFIG_USB_GSPCA_PAC7302=mCONFIG_USB_GSPCA_PAC7311=mCONFIG_USB_GSPCA_SE401=mCONFIG_USB_GSPCA_SN9C2028=mCONFIG_USB_GSPCA_SN9C20X=mCONFIG_USB_GSPCA_SONIXB=mCONFIG_USB_GSPCA_SONIXJ=mCONFIG_USB_GSPCA_SPCA500=mCONFIG_USB_GSPCA_SPCA501=mCONFIG_USB_GSPCA_SPCA505=mCONFIG_USB_GSPCA_SPCA506=mCONFIG_USB_GSPCA_SPCA508=mCONFIG_USB_GSPCA_SPCA561=mCONFIG_USB_GSPCA_SPCA1528=mCONFIG_USB_GSPCA_SQ905=mCONFIG_USB_GSPCA_SQ905C=mCONFIG_USB_GSPCA_SQ930X=mCONFIG_USB_GSPCA_STK014=m
# CONFIG_USB_GSPCA_STK1135 is not setCONFIG_USB_GSPCA_STV0680=mCONFIG_USB_GSPCA_SUNPLUS=mCONFIG_USB_GSPCA_T613=mCONFIG_USB_GSPCA_TOPRO=m
# CONFIG_USB_GSPCA_TOUPTEK is not setCONFIG_USB_GSPCA_TV8532=mCONFIG_USB_GSPCA_VC032X=mCONFIG_USB_GSPCA_VICAM=mCONFIG_USB_GSPCA_XIRLINK_CIT=mCONFIG_USB_GSPCA_ZC3XX=mCONFIG_USB_PWC=m
# CONFIG_USB_PWC_DEBUG is not setCONFIG_USB_PWC_INPUT_EVDEV=y
# CONFIG_VIDEO_CPIA2 is not setCONFIG_USB_ZR364XX=mCONFIG_USB_STKWEBCAM=mCONFIG_USB_S2255=m
# CONFIG_VIDEO_USBTV is not set
#
# Analog TV USB devices
#CONFIG_VIDEO_PVRUSB2=mCONFIG_VIDEO_PVRUSB2_SYSFS=yCONFIG_VIDEO_PVRUSB2_DVB=y
# CONFIG_VIDEO_PVRUSB2_DEBUGIFC is not setCONFIG_VIDEO_HDPVR=mCONFIG_VIDEO_USBVISION=m
# CONFIG_VIDEO_STK1160_COMMON is not set
# CONFIG_VIDEO_GO7007 is not set
#
# Analog/digital TV USB devices
#CONFIG_VIDEO_AU0828=mCONFIG_VIDEO_AU0828_V4L2=y
# CONFIG_VIDEO_AU0828_RC is not setCONFIG_VIDEO_CX231XX=mCONFIG_VIDEO_CX231XX_RC=yCONFIG_VIDEO_CX231XX_ALSA=mCONFIG_VIDEO_CX231XX_DVB=mCONFIG_VIDEO_TM6000=mCONFIG_VIDEO_TM6000_ALSA=mCONFIG_VIDEO_TM6000_DVB=m
#
# Digital TV USB devices
#CONFIG_DVB_USB=m
# CONFIG_DVB_USB_DEBUG is not setCONFIG_DVB_USB_DIB3000MC=mCONFIG_DVB_USB_A800=mCONFIG_DVB_USB_DIBUSB_MB=m
# CONFIG_DVB_USB_DIBUSB_MB_FAULTY is not setCONFIG_DVB_USB_DIBUSB_MC=mCONFIG_DVB_USB_DIB0700=mCONFIG_DVB_USB_UMT_010=mCONFIG_DVB_USB_CXUSB=mCONFIG_DVB_USB_M920X=mCONFIG_DVB_USB_DIGITV=mCONFIG_DVB_USB_VP7045=mCONFIG_DVB_USB_VP702X=mCONFIG_DVB_USB_GP8PSK=mCONFIG_DVB_USB_NOVA_T_USB2=mCONFIG_DVB_USB_TTUSB2=mCONFIG_DVB_USB_DTT200U=mCONFIG_DVB_USB_OPERA1=mCONFIG_DVB_USB_AF9005=mCONFIG_DVB_USB_AF9005_REMOTE=mCONFIG_DVB_USB_PCTV452E=mCONFIG_DVB_USB_DW2102=mCONFIG_DVB_USB_CINERGY_T2=mCONFIG_DVB_USB_DTV5100=mCONFIG_DVB_USB_FRIIO=mCONFIG_DVB_USB_AZ6027=mCONFIG_DVB_USB_TECHNISAT_USB2=mCONFIG_DVB_USB_V2=mCONFIG_DVB_USB_AF9015=mCONFIG_DVB_USB_AF9035=mCONFIG_DVB_USB_ANYSEE=mCONFIG_DVB_USB_AU6610=mCONFIG_DVB_USB_AZ6007=mCONFIG_DVB_USB_CE6230=mCONFIG_DVB_USB_EC168=mCONFIG_DVB_USB_GL861=mCONFIG_DVB_USB_LME2510=mCONFIG_DVB_USB_MXL111SF=mCONFIG_DVB_USB_RTL28XXU=m
# CONFIG_DVB_USB_DVBSKY is not set
# CONFIG_DVB_USB_ZD1301 is not setCONFIG_DVB_TTUSB_BUDGET=mCONFIG_DVB_TTUSB_DEC=mCONFIG_SMS_USB_DRV=mCONFIG_DVB_B2C2_FLEXCOP_USB=m
# CONFIG_DVB_B2C2_FLEXCOP_USB_DEBUG is not set
# CONFIG_DVB_AS102 is not set
#
# Webcam, TV (analog/digital) USB devices
#CONFIG_VIDEO_EM28XX=m
# CONFIG_VIDEO_EM28XX_V4L2 is not setCONFIG_VIDEO_EM28XX_ALSA=mCONFIG_VIDEO_EM28XX_DVB=mCONFIG_VIDEO_EM28XX_RC=mCONFIG_MEDIA_PCI_SUPPORT=y
#
# Media capture support
#
# CONFIG_VIDEO_MEYE is not set
# CONFIG_VIDEO_SOLO6X10 is not set
# CONFIG_VIDEO_TW5864 is not set
# CONFIG_VIDEO_TW68 is not set
# CONFIG_VIDEO_TW686X is not set
# CONFIG_VIDEO_ZORAN is not set
#
# Media capture/analog TV support
#CONFIG_VIDEO_IVTV=m
# CONFIG_VIDEO_IVTV_DEPRECATED_IOCTLS is not set
# CONFIG_VIDEO_IVTV_ALSA is not setCONFIG_VIDEO_FB_IVTV=m
# CONFIG_VIDEO_HEXIUM_GEMINI is not set
# CONFIG_VIDEO_HEXIUM_ORION is not set
# CONFIG_VIDEO_MXB is not set
# CONFIG_VIDEO_DT3155 is not set
#
# Media capture/analog/hybrid TV support
#CONFIG_VIDEO_CX18=mCONFIG_VIDEO_CX18_ALSA=mCONFIG_VIDEO_CX23885=mCONFIG_MEDIA_ALTERA_CI=m
# CONFIG_VIDEO_CX25821 is not setCONFIG_VIDEO_CX88=mCONFIG_VIDEO_CX88_ALSA=mCONFIG_VIDEO_CX88_BLACKBIRD=mCONFIG_VIDEO_CX88_DVB=mCONFIG_VIDEO_CX88_ENABLE_VP3054=yCONFIG_VIDEO_CX88_VP3054=mCONFIG_VIDEO_CX88_MPEG=mCONFIG_VIDEO_BT848=mCONFIG_DVB_BT8XX=mCONFIG_VIDEO_SAA7134=mCONFIG_VIDEO_SAA7134_ALSA=mCONFIG_VIDEO_SAA7134_RC=yCONFIG_VIDEO_SAA7134_DVB=mCONFIG_VIDEO_SAA7164=m
#
# Media digital TV PCI Adapters
#CONFIG_DVB_AV7110_IR=yCONFIG_DVB_AV7110=mCONFIG_DVB_AV7110_OSD=yCONFIG_DVB_BUDGET_CORE=mCONFIG_DVB_BUDGET=mCONFIG_DVB_BUDGET_CI=mCONFIG_DVB_BUDGET_AV=mCONFIG_DVB_BUDGET_PATCH=mCONFIG_DVB_B2C2_FLEXCOP_PCI=m
# CONFIG_DVB_B2C2_FLEXCOP_PCI_DEBUG is not setCONFIG_DVB_PLUTO2=mCONFIG_DVB_DM1105=mCONFIG_DVB_PT1=m
# CONFIG_DVB_PT3 is not setCONFIG_MANTIS_CORE=mCONFIG_DVB_MANTIS=mCONFIG_DVB_HOPPER=mCONFIG_DVB_NGENE=mCONFIG_DVB_DDBRIDGE=m
# CONFIG_DVB_SMIPCIE is not set
# CONFIG_DVB_NETUP_UNIDVB is not set
# CONFIG_V4L_PLATFORM_DRIVERS is not set
# CONFIG_V4L_MEM2MEM_DRIVERS is not set
# CONFIG_V4L_TEST_DRIVERS is not set
# CONFIG_DVB_PLATFORM_DRIVERS is not set
#
# Supported MMC/SDIO adapters
#CONFIG_SMS_SDIO_DRV=mCONFIG_RADIO_ADAPTERS=yCONFIG_RADIO_TEA575X=m
# CONFIG_RADIO_SI470X is not set
# CONFIG_RADIO_SI4713 is not set
# CONFIG_USB_MR800 is not set
# CONFIG_USB_DSBR is not set
# CONFIG_RADIO_MAXIRADIO is not set
# CONFIG_RADIO_SHARK is not set
# CONFIG_RADIO_SHARK2 is not set
# CONFIG_USB_KEENE is not set
# CONFIG_USB_RAREMONO is not set
# CONFIG_USB_MA901 is not set
# CONFIG_RADIO_TEA5764 is not set
# CONFIG_RADIO_SAA7706H is not set
# CONFIG_RADIO_TEF6862 is not set
# CONFIG_RADIO_WL1273 is not set
#
# Texas Instruments WL128x FM driver (ST based)
#
#
# Supported FireWire (IEEE 1394) Adapters
#CONFIG_DVB_FIREDTV=mCONFIG_DVB_FIREDTV_INPUT=yCONFIG_MEDIA_COMMON_OPTIONS=y
#
# common driver options # CONFIG_VIDEO_CX2341X=m CONFIG_VIDEO_TVEEPROM=m CONFIG_CYPRESS_FIRMWARE=m CONFIG_DVB_B2C2_FLEXCOP=m CONFIG_VIDEO_SAA7146=m CONFIG_VIDEO_SAA7146_VV=m CONFIG_SMS_SIANO_MDTV=m CONFIG_SMS_SIANO_RC=y # CONFIG_SMS_SIANO_DEBUGFS is not set
#
# Media ancillary drivers (tuners, sensors, i2c, spi, frontends) #CONFIG_MEDIA_SUBDRV_AUTOSELECT=yCONFIG_MEDIA_ATTACH=yCONFIG_VIDEO_IR_I2C=m
#
# Audio decoders, processors and mixers
#CONFIG_VIDEO_TVAUDIO=mCONFIG_VIDEO_TDA7432=mCONFIG_VIDEO_MSP3400=mCONFIG_VIDEO_CS3308=mCONFIG_VIDEO_CS5345=mCONFIG_VIDEO_CS53L32A=mCONFIG_VIDEO_WM8775=mCONFIG_VIDEO_WM8739=mCONFIG_VIDEO_VP27SMPX=m
#
# RDS decoders
#CONFIG_VIDEO_SAA6588=m
#
# Video decoders
#CONFIG_VIDEO_SAA711X=m
#
# Video and audio decoders
#CONFIG_VIDEO_SAA717X=mCONFIG_VIDEO_CX25840=m
#
# Video encoders
#CONFIG_VIDEO_SAA7127=m
#
# Camera sensor devices
#
#
# Flash devices
#
#
# Video improvement chips
#CONFIG_VIDEO_UPD64031A=mCONFIG_VIDEO_UPD64083=m
#
# Audio/Video compression chips
#CONFIG_VIDEO_SAA6752HS=m
#
# Miscellaneous helper chips
#CONFIG_VIDEO_M52790=m
#
# Sensors used on soc_camera driver
#CONFIG_MEDIA_TUNER=mCONFIG_MEDIA_TUNER_SIMPLE=mCONFIG_MEDIA_TUNER_TDA8290=mCONFIG_MEDIA_TUNER_TDA827X=mCONFIG_MEDIA_TUNER_TDA18271=mCONFIG_MEDIA_TUNER_TDA9887=mCONFIG_MEDIA_TUNER_TEA5761=mCONFIG_MEDIA_TUNER_TEA5767=mCONFIG_MEDIA_TUNER_MT20XX=mCONFIG_MEDIA_TUNER_MT2060=mCONFIG_MEDIA_TUNER_MT2063=mCONFIG_MEDIA_TUNER_MT2266=mCONFIG_MEDIA_TUNER_MT2131=mCONFIG_MEDIA_TUNER_QT1010=mCONFIG_MEDIA_TUNER_XC2028=mCONFIG_MEDIA_TUNER_XC5000=mCONFIG_MEDIA_TUNER_XC4000=mCONFIG_MEDIA_TUNER_MXL5005S=mCONFIG_MEDIA_TUNER_MXL5007T=mCONFIG_MEDIA_TUNER_MC44S803=mCONFIG_MEDIA_TUNER_MAX2165=mCONFIG_MEDIA_TUNER_TDA18218=mCONFIG_MEDIA_TUNER_FC0011=mCONFIG_MEDIA_TUNER_FC0012=mCONFIG_MEDIA_TUNER_FC0013=mCONFIG_MEDIA_TUNER_TDA18212=mCONFIG_MEDIA_TUNER_E4000=mCONFIG_MEDIA_TUNER_FC2580=mCONFIG_MEDIA_TUNER_M88RS6000T=mCONFIG_MEDIA_TUNER_TUA9001=mCONFIG_MEDIA_TUNER_SI2157=mCONFIG_MEDIA_TUNER_IT913X=mCONFIG_MEDIA_TUNER_R820T=mCONFIG_MEDIA_TUNER_QM1D1C0042=m
#
# Multistandard (satellite) frontends
#CONFIG_DVB_STB0899=mCONFIG_DVB_STB6100=m
CONFIG_DVB_STV090x=m
CONFIG_DVB_STV6110x=mCONFIG_DVB_M88DS3103=m
#
# Multistandard (cable + terrestrial) frontends
#CONFIG_DVB_DRXK=mCONFIG_DVB_TDA18271C2DD=mCONFIG_DVB_SI2165=mCONFIG_DVB_MN88472=mCONFIG_DVB_MN88473=m
#
# DVB-S (satellite) frontends
#CONFIG_DVB_CX24110=mCONFIG_DVB_CX24123=mCONFIG_DVB_MT312=mCONFIG_DVB_ZL10036=mCONFIG_DVB_ZL10039=mCONFIG_DVB_S5H1420=mCONFIG_DVB_STV0288=mCONFIG_DVB_STB6000=mCONFIG_DVB_STV0299=mCONFIG_DVB_STV6110=mCONFIG_DVB_STV0900=mCONFIG_DVB_TDA8083=mCONFIG_DVB_TDA10086=mCONFIG_DVB_TDA8261=mCONFIG_DVB_VES1X93=mCONFIG_DVB_TUNER_ITD1000=mCONFIG_DVB_TUNER_CX24113=mCONFIG_DVB_TDA826X=mCONFIG_DVB_TUA6100=mCONFIG_DVB_CX24116=mCONFIG_DVB_CX24117=mCONFIG_DVB_CX24120=mCONFIG_DVB_SI21XX=mCONFIG_DVB_TS2020=mCONFIG_DVB_DS3000=mCONFIG_DVB_MB86A16=mCONFIG_DVB_TDA10071=m
#
# DVB-T (terrestrial) frontends
#CONFIG_DVB_SP8870=mCONFIG_DVB_SP887X=mCONFIG_DVB_CX22700=mCONFIG_DVB_CX22702=mCONFIG_DVB_DRXD=mCONFIG_DVB_L64781=mCONFIG_DVB_TDA1004X=mCONFIG_DVB_NXT6000=mCONFIG_DVB_MT352=mCONFIG_DVB_ZL10353=mCONFIG_DVB_DIB3000MB=mCONFIG_DVB_DIB3000MC=mCONFIG_DVB_DIB7000M=mCONFIG_DVB_DIB7000P=mCONFIG_DVB_TDA10048=mCONFIG_DVB_AF9013=mCONFIG_DVB_EC100=mCONFIG_DVB_STV0367=mCONFIG_DVB_CXD2820R=mCONFIG_DVB_RTL2830=mCONFIG_DVB_RTL2832=mCONFIG_DVB_SI2168=m
# CONFIG_DVB_AS102_FE is not setCONFIG_DVB_GP8PSK_FE=m
#
# DVB-C (cable) frontends
#CONFIG_DVB_VES1820=mCONFIG_DVB_TDA10021=mCONFIG_DVB_TDA10023=mCONFIG_DVB_STV0297=m
#
# ATSC (North American/Korean Terrestrial/Cable DTV) frontends #CONFIG_DVB_NXT200X=mCONFIG_DVB_OR51211=mCONFIG_DVB_OR51132=mCONFIG_DVB_BCM3510=mCONFIG_DVB_LGDT330X=mCONFIG_DVB_LGDT3305=mCONFIG_DVB_LGDT3306A=mCONFIG_DVB_LG2160=mCONFIG_DVB_S5H1409=mCONFIG_DVB_AU8522=mCONFIG_DVB_AU8522_DTV=mCONFIG_DVB_AU8522_V4L=mCONFIG_DVB_S5H1411=m
#
# ISDB-T (terrestrial) frontends
#CONFIG_DVB_S921=mCONFIG_DVB_DIB8000=mCONFIG_DVB_MB86A20S=m
#
# ISDB-S (satellite) & ISDB-T (terrestrial) frontends #CONFIG_DVB_TC90522=m
#
# Digital terrestrial only tuners/PLL
#CONFIG_DVB_PLL=mCONFIG_DVB_TUNER_DIB0070=mCONFIG_DVB_TUNER_DIB0090=m
#
# SEC control devices for DVB-S
#CONFIG_DVB_DRX39XYJ=mCONFIG_DVB_LNBP21=mCONFIG_DVB_LNBP22=mCONFIG_DVB_ISL6405=mCONFIG_DVB_ISL6421=mCONFIG_DVB_ISL6423=mCONFIG_DVB_A8293=mCONFIG_DVB_LGS8GXX=mCONFIG_DVB_ATBM8830=m
CONFIG_DVB_TDA665x=mCONFIG_DVB_IX2505V=mCONFIG_DVB_M88RS2000=mCONFIG_DVB_AF9033=m
#
# Tools to develop new frontends
#
# CONFIG_DVB_DUMMY_FE is not set
#
# Graphics support
#CONFIG_AGP=yCONFIG_AGP_AMD64=yCONFIG_AGP_INTEL=yCONFIG_AGP_SIS=yCONFIG_AGP_VIA=yCONFIG_INTEL_GTT=yCONFIG_VGA_ARB=yCONFIG_VGA_ARB_MAX_GPUS=64CONFIG_VGA_SWITCHEROO=yCONFIG_DRM=mCONFIG_DRM_MIPI_DSI=y
# CONFIG_DRM_DP_AUX_CHARDEV is not set
# CONFIG_DRM_DEBUG_MM_SELFTEST is not setCONFIG_DRM_KMS_HELPER=mCONFIG_DRM_KMS_FB_HELPER=yCONFIG_DRM_FBDEV_EMULATION=yCONFIG_DRM_LOAD_EDID_FIRMWARE=yCONFIG_DRM_TTM=m
#
# I2C encoder or helper chips
#CONFIG_DRM_I2C_CH7006=mCONFIG_DRM_I2C_SIL164=mCONFIG_DRM_I2C_NXP_TDA998X=m
# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_AMDGPU is not set
#
# ACP (Audio CoProcessor) Configuration
#
# CONFIG_DRM_NOUVEAU is not setCONFIG_DRM_I915=m
# CONFIG_DRM_I915_ALPHA_SUPPORT is not setCONFIG_DRM_I915_CAPTURE_ERROR=yCONFIG_DRM_I915_COMPRESS_ERROR=yCONFIG_DRM_I915_USERPTR=y
# CONFIG_DRM_I915_GVT is not set
#
# drm/i915 Debugging # # CONFIG_DRM_I915_WERROR is not set # CONFIG_DRM_I915_DEBUG is not set # CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS is not set # CONFIG_DRM_VGEM is not set CONFIG_DRM_VMWGFX=m CONFIG_DRM_VMWGFX_FBCON=y CONFIG_DRM_GMA500=m CONFIG_DRM_GMA600=y CONFIG_DRM_GMA3600=y CONFIG_DRM_UDL=m CONFIG_DRM_AST=m CONFIG_DRM_MGAG200=m CONFIG_DRM_CIRRUS_QEMU=m CONFIG_DRM_QXL=m # CONFIG_DRM_BOCHS is not set # CONFIG_DRM_VIRTIO_GPU is not set CONFIG_DRM_PANEL=y
#
# Display Panels
#CONFIG_DRM_BRIDGE=y
#
# Display Interface Bridges
#
# CONFIG_DRM_ANALOGIX_ANX78XX is not set
# CONFIG_DRM_HISI_HIBMC is not set
# CONFIG_DRM_TINYDRM is not set
# CONFIG_DRM_LEGACY is not set
# CONFIG_DRM_LIB_RANDOM is not set
#
# Frame buffer Devices
#CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set CONFIG_FB_CMDLINE=yCONFIG_FB_NOTIFY=y
# CONFIG_FB_DDC is not set CONFIG_FB_BOOT_VESA_SUPPORT=y CONFIG_FB_CFB_FILLRECT=y CONFIG_FB_CFB_COPYAREA=y CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set CONFIG_FB_SYS_FILLRECT=m CONFIG_FB_SYS_COPYAREA=m CONFIG_FB_SYS_IMAGEBLIT=m
# CONFIG_FB_PROVIDE_GET_FB_UNMAPPED_AREA is not set # CONFIG_FB_FOREIGN_ENDIAN is not set CONFIG_FB_SYS_FOPS=m CONFIG_FB_DEFERRED_IO=y
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
# CONFIG_FB_MODE_HELPERS is not set CONFIG_FB_TILEBLITTING=y
#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_UVESA is not setCONFIG_FB_VESA=yCONFIG_FB_EFI=y
# CONFIG_FB_N411 is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I740 is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_INTEL is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_VIA is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_SM501 is not set
# CONFIG_FB_SMSCUFX is not set
# CONFIG_FB_UDL is not set
# CONFIG_FB_IBM_GXT4500 is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_XEN_FBDEV_FRONTEND is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_MB862XX is not set
# CONFIG_FB_BROADSHEET is not set
# CONFIG_FB_AUO_K190X is not setCONFIG_FB_HYPERV=m
# CONFIG_FB_SIMPLE is not set
# CONFIG_FB_SM712 is not setCONFIG_BACKLIGHT_LCD_SUPPORT=yCONFIG_LCD_CLASS_DEVICE=m
# CONFIG_LCD_L4F00242T03 is not set
# CONFIG_LCD_LMS283GF05 is not set
# CONFIG_LCD_LTV350QV is not set
# CONFIG_LCD_ILI922X is not set
# CONFIG_LCD_ILI9320 is not set
# CONFIG_LCD_TDO24M is not set
# CONFIG_LCD_VGG2432A4 is not setCONFIG_LCD_PLATFORM=m
# CONFIG_LCD_S6E63M0 is not set
# CONFIG_LCD_LD9040 is not set
# CONFIG_LCD_AMS369FG06 is not set
# CONFIG_LCD_LMS501KF03 is not set
# CONFIG_LCD_HX8357 is not setCONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_GENERIC is not set
# CONFIG_BACKLIGHT_PWM is not setCONFIG_BACKLIGHT_APPLE=m
# CONFIG_BACKLIGHT_PM8941_WLED is not set
# CONFIG_BACKLIGHT_SAHARA is not set
# CONFIG_BACKLIGHT_ADP8860 is not set
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_LM3630A is not set
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LP855X is not set
# CONFIG_BACKLIGHT_GPIO is not set
# CONFIG_BACKLIGHT_LV5207LP is not set
# CONFIG_BACKLIGHT_BD6107 is not set
# CONFIG_VGASTATE is not setCONFIG_HDMI=y
#
# Console display driver support
#CONFIG_VGA_CONSOLE=yCONFIG_VGACON_SOFT_SCROLLBACK=y CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
# CONFIG_VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT is not set CONFIG_DUMMY_CONSOLE=yCONFIG_DUMMY_CONSOLE_COLUMNS=80CONFIG_DUMMY_CONSOLE_ROWS=25CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=yCONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set CONFIG_LOGO_LINUX_CLUT224=yCONFIG_SOUND=mCONFIG_SOUND_OSS_CORE=yCONFIG_SOUND_OSS_CORE_PRECLAIM=yCONFIG_SND=mCONFIG_SND_TIMER=mCONFIG_SND_PCM=mCONFIG_SND_HWDEP=mCONFIG_SND_RAWMIDI=mCONFIG_SND_JACK=yCONFIG_SND_JACK_INPUT_DEV=yCONFIG_SND_SEQUENCER=mCONFIG_SND_SEQ_DUMMY=mCONFIG_SND_OSSEMUL=y
# CONFIG_SND_MIXER_OSS is not set
# CONFIG_SND_PCM_OSS is not setCONFIG_SND_PCM_TIMER=yCONFIG_SND_SEQUENCER_OSS=yCONFIG_SND_HRTIMER=mCONFIG_SND_SEQ_HRTIMER_DEFAULT=yCONFIG_SND_DYNAMIC_MINORS=yCONFIG_SND_MAX_CARDS=32
# CONFIG_SND_SUPPORT_OLD_API is not setCONFIG_SND_PROC_FS=yCONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not setCONFIG_SND_VMASTER=yCONFIG_SND_DMA_SGBUF=yCONFIG_SND_RAWMIDI_SEQ=mCONFIG_SND_OPL3_LIB_SEQ=m
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not setCONFIG_SND_EMU10K1_SEQ=mCONFIG_SND_MPU401_UART=mCONFIG_SND_OPL3_LIB=mCONFIG_SND_VX_LIB=mCONFIG_SND_AC97_CODEC=mCONFIG_SND_DRIVERS=yCONFIG_SND_PCSP=mCONFIG_SND_DUMMY=mCONFIG_SND_ALOOP=mCONFIG_SND_VIRMIDI=mCONFIG_SND_MTPAV=m
# CONFIG_SND_MTS64 is not set
# CONFIG_SND_SERIAL_U16550 is not setCONFIG_SND_MPU401=m
# CONFIG_SND_PORTMAN2X4 is not set CONFIG_SND_AC97_POWER_SAVE=y CONFIG_SND_AC97_POWER_SAVE_DEFAULT=5CONFIG_SND_PCI=yCONFIG_SND_AD1889=m
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not setCONFIG_SND_ALI5451=mCONFIG_SND_ASIHPI=mCONFIG_SND_ATIIXP=mCONFIG_SND_ATIIXP_MODEM=mCONFIG_SND_AU8810=mCONFIG_SND_AU8820=mCONFIG_SND_AU8830=m
# CONFIG_SND_AW2 is not set
# CONFIG_SND_AZT3328 is not setCONFIG_SND_BT87X=m
# CONFIG_SND_BT87X_OVERCLOCK is not setCONFIG_SND_CA0106=mCONFIG_SND_CMIPCI=mCONFIG_SND_OXYGEN_LIB=mCONFIG_SND_OXYGEN=m
# CONFIG_SND_CS4281 is not setCONFIG_SND_CS46XX=mCONFIG_SND_CS46XX_NEW_DSP=yCONFIG_SND_CTXFI=mCONFIG_SND_DARLA20=mCONFIG_SND_GINA20=mCONFIG_SND_LAYLA20=mCONFIG_SND_DARLA24=mCONFIG_SND_GINA24=mCONFIG_SND_LAYLA24=mCONFIG_SND_MONA=mCONFIG_SND_MIA=mCONFIG_SND_ECHO3G=mCONFIG_SND_INDIGO=mCONFIG_SND_INDIGOIO=mCONFIG_SND_INDIGODJ=mCONFIG_SND_INDIGOIOX=mCONFIG_SND_INDIGODJX=mCONFIG_SND_EMU10K1=mCONFIG_SND_EMU10K1X=mCONFIG_SND_ENS1370=mCONFIG_SND_ENS1371=m
# CONFIG_SND_ES1938 is not setCONFIG_SND_ES1968=mCONFIG_SND_ES1968_INPUT=yCONFIG_SND_ES1968_RADIO=y
# CONFIG_SND_FM801 is not setCONFIG_SND_HDSP=mCONFIG_SND_HDSPM=mCONFIG_SND_ICE1712=mCONFIG_SND_ICE1724=mCONFIG_SND_INTEL8X0=mCONFIG_SND_INTEL8X0M=mCONFIG_SND_KORG1212=mCONFIG_SND_LOLA=mCONFIG_SND_LX6464ES=mCONFIG_SND_MAESTRO3=mCONFIG_SND_MAESTRO3_INPUT=yCONFIG_SND_MIXART=m
# CONFIG_SND_NM256 is not setCONFIG_SND_PCXHR=m
# CONFIG_SND_RIPTIDE is not setCONFIG_SND_RME32=mCONFIG_SND_RME96=mCONFIG_SND_RME9652=m
# CONFIG_SND_SONICVIBES is not setCONFIG_SND_TRIDENT=mCONFIG_SND_VIA82XX=mCONFIG_SND_VIA82XX_MODEM=mCONFIG_SND_VIRTUOSO=mCONFIG_SND_VX222=m
# CONFIG_SND_YMFPCI is not set
#
# HD-Audio
#CONFIG_SND_HDA=mCONFIG_SND_HDA_INTEL=mCONFIG_SND_HDA_HWDEP=y
# CONFIG_SND_HDA_RECONFIG is not setCONFIG_SND_HDA_INPUT_BEEP=yCONFIG_SND_HDA_INPUT_BEEP_MODE=0
# CONFIG_SND_HDA_PATCH_LOADER is not setCONFIG_SND_HDA_CODEC_REALTEK=mCONFIG_SND_HDA_CODEC_ANALOG=mCONFIG_SND_HDA_CODEC_SIGMATEL=mCONFIG_SND_HDA_CODEC_VIA=mCONFIG_SND_HDA_CODEC_HDMI=mCONFIG_SND_HDA_CODEC_CIRRUS=mCONFIG_SND_HDA_CODEC_CONEXANT=mCONFIG_SND_HDA_CODEC_CA0110=mCONFIG_SND_HDA_CODEC_CA0132=mCONFIG_SND_HDA_CODEC_CA0132_DSP=yCONFIG_SND_HDA_CODEC_CMEDIA=mCONFIG_SND_HDA_CODEC_SI3054=mCONFIG_SND_HDA_GENERIC=mCONFIG_SND_HDA_POWER_SAVE_DEFAULT=0CONFIG_SND_HDA_CORE=mCONFIG_SND_HDA_DSP_LOADER=yCONFIG_SND_HDA_I915=yCONFIG_SND_HDA_PREALLOC_SIZE=512CONFIG_SND_SPI=yCONFIG_SND_USB=yCONFIG_SND_USB_AUDIO=mCONFIG_SND_USB_UA101=mCONFIG_SND_USB_USX2Y=mCONFIG_SND_USB_CAIAQ=mCONFIG_SND_USB_CAIAQ_INPUT=yCONFIG_SND_USB_US122L=mCONFIG_SND_USB_6FIRE=m
# CONFIG_SND_USB_HIFACE is not set
# CONFIG_SND_BCD2000 is not set
# CONFIG_SND_USB_POD is not set
# CONFIG_SND_USB_PODHD is not set
# CONFIG_SND_USB_TONEPORT is not set
# CONFIG_SND_USB_VARIAX is not setCONFIG_SND_FIREWIRE=yCONFIG_SND_FIREWIRE_LIB=m
# CONFIG_SND_DICE is not set
# CONFIG_SND_OXFW is not setCONFIG_SND_ISIGHT=m
# CONFIG_SND_FIREWORKS is not set
# CONFIG_SND_BEBOB is not set
# CONFIG_SND_FIREWIRE_DIGI00X is not set
# CONFIG_SND_FIREWIRE_TASCAM is not set
# CONFIG_SND_SOC is not setCONFIG_SND_X86=y
# CONFIG_HDMI_LPE_AUDIO is not set
# CONFIG_SOUND_PRIME is not setCONFIG_AC97_BUS=m
#
# HID support
#CONFIG_HID=yCONFIG_HID_BATTERY_STRENGTH=yCONFIG_HIDRAW=yCONFIG_UHID=mCONFIG_HID_GENERIC=y
#
# Special HID drivers
#CONFIG_HID_A4TECH=yCONFIG_HID_ACRUX=m
# CONFIG_HID_ACRUX_FF is not setCONFIG_HID_APPLE=yCONFIG_HID_APPLEIR=m
# CONFIG_HID_ASUS is not setCONFIG_HID_AUREAL=mCONFIG_HID_BELKIN=y
# CONFIG_HID_BETOP_FF is not setCONFIG_HID_CHERRY=yCONFIG_HID_CHICONY=y
# CONFIG_HID_CORSAIR is not setCONFIG_HID_PRODIKEYS=m
# CONFIG_HID_CMEDIA is not set
# CONFIG_HID_CP2112 is not setCONFIG_HID_CYPRESS=yCONFIG_HID_DRAGONRISE=m
# CONFIG_DRAGONRISE_FF is not set
# CONFIG_HID_EMS_FF is not setCONFIG_HID_ELECOM=m
# CONFIG_HID_ELO is not setCONFIG_HID_EZKEY=y
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not setCONFIG_HID_HOLTEK=m
# CONFIG_HOLTEK_FF is not set
# CONFIG_HID_GT683R is not setCONFIG_HID_KEYTOUCH=mCONFIG_HID_KYE=mCONFIG_HID_UCLOGIC=mCONFIG_HID_WALTOP=mCONFIG_HID_GYRATION=mCONFIG_HID_ICADE=mCONFIG_HID_TWINHAN=mCONFIG_HID_KENSINGTON=yCONFIG_HID_LCPOWER=mCONFIG_HID_LED=m
# CONFIG_HID_LENOVO is not setCONFIG_HID_LOGITECH=yCONFIG_HID_LOGITECH_DJ=mCONFIG_HID_LOGITECH_HIDPP=m
# CONFIG_LOGITECH_FF is not set
# CONFIG_LOGIRUMBLEPAD2_FF is not set
# CONFIG_LOGIG940_FF is not set
# CONFIG_LOGIWHEELS_FF is not setCONFIG_HID_MAGICMOUSE=y
# CONFIG_HID_MAYFLASH is not setCONFIG_HID_MICROSOFT=yCONFIG_HID_MONTEREY=yCONFIG_HID_MULTITOUCH=mCONFIG_HID_NTRIG=yCONFIG_HID_ORTEK=mCONFIG_HID_PANTHERLORD=m
# CONFIG_PANTHERLORD_FF is not set
# CONFIG_HID_PENMOUNT is not setCONFIG_HID_PETALYNX=mCONFIG_HID_PICOLCD=mCONFIG_HID_PICOLCD_FB=yCONFIG_HID_PICOLCD_BACKLIGHT=yCONFIG_HID_PICOLCD_LCD=yCONFIG_HID_PICOLCD_LEDS=yCONFIG_HID_PICOLCD_CIR=yCONFIG_HID_PLANTRONICS=yCONFIG_HID_PRIMAX=mCONFIG_HID_ROCCAT=mCONFIG_HID_SAITEK=mCONFIG_HID_SAMSUNG=mCONFIG_HID_SONY=m
# CONFIG_SONY_FF is not setCONFIG_HID_SPEEDLINK=mCONFIG_HID_STEELSERIES=mCONFIG_HID_SUNPLUS=m
# CONFIG_HID_RMI is not setCONFIG_HID_GREENASIA=m
# CONFIG_GREENASIA_FF is not setCONFIG_HID_HYPERV_MOUSE=mCONFIG_HID_SMARTJOYPLUS=m
# CONFIG_SMARTJOYPLUS_FF is not setCONFIG_HID_TIVO=mCONFIG_HID_TOPSEED=mCONFIG_HID_THINGM=mCONFIG_HID_THRUSTMASTER=m
# CONFIG_THRUSTMASTER_FF is not set
# CONFIG_HID_UDRAW_PS3 is not setCONFIG_HID_WACOM=mCONFIG_HID_WIIMOTE=m
# CONFIG_HID_XINMO is not setCONFIG_HID_ZEROPLUS=m
# CONFIG_ZEROPLUS_FF is not setCONFIG_HID_ZYDACRON=m
# CONFIG_HID_SENSOR_HUB is not set
# CONFIG_HID_ALPS is not set
#
# USB HID support
#CONFIG_USB_HID=yCONFIG_HID_PID=yCONFIG_USB_HIDDEV=y
#
# I2C HID support
#CONFIG_I2C_HID=m
#
# Intel ISH HID support
#
# CONFIG_INTEL_ISH_HID is not setCONFIG_USB_OHCI_LITTLE_ENDIAN=yCONFIG_USB_SUPPORT=yCONFIG_USB_COMMON=yCONFIG_USB_ARCH_HAS_HCD=yCONFIG_USB=yCONFIG_USB_ANNOUNCE_NEW_DEVICES=y
#
# Miscellaneous USB options
#CONFIG_USB_DEFAULT_PERSIST=y
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_OTG_WHITELIST is not set
# CONFIG_USB_OTG_BLACKLIST_HUB is not set
# CONFIG_USB_LEDS_TRIGGER_USBPORT is not setCONFIG_USB_MON=yCONFIG_USB_WUSB=mCONFIG_USB_WUSB_CBAF=m
# CONFIG_USB_WUSB_CBAF_DEBUG is not set
#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not setCONFIG_USB_XHCI_HCD=yCONFIG_USB_XHCI_PCI=yCONFIG_USB_XHCI_PLATFORM=yCONFIG_USB_EHCI_HCD=yCONFIG_USB_EHCI_ROOT_HUB_TT=yCONFIG_USB_EHCI_TT_NEWSCHED=yCONFIG_USB_EHCI_PCI=y
# CONFIG_USB_EHCI_HCD_PLATFORM is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_FOTG210_HCD is not set
# CONFIG_USB_MAX3421_HCD is not setCONFIG_USB_OHCI_HCD=yCONFIG_USB_OHCI_HCD_PCI=y
# CONFIG_USB_OHCI_HCD_PLATFORM is not setCONFIG_USB_UHCI_HCD=y
# CONFIG_USB_U132_HCD is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_WHCI_HCD is not setCONFIG_USB_HWA_HCD=m
# CONFIG_USB_HCD_BCMA is not set
# CONFIG_USB_HCD_SSB is not set
# CONFIG_USB_HCD_TEST_MODE is not set
#
# USB Device Class drivers
#CONFIG_USB_ACM=mCONFIG_USB_PRINTER=mCONFIG_USB_WDM=mCONFIG_USB_TMC=m
#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may #
#
# also be needed; see USB_STORAGE Help for more info # CONFIG_USB_STORAGE=m # CONFIG_USB_STORAGE_DEBUG is not set CONFIG_USB_STORAGE_REALTEK=m CONFIG_REALTEK_AUTOPM=y CONFIG_USB_STORAGE_DATAFAB=m CONFIG_USB_STORAGE_FREECOM=m CONFIG_USB_STORAGE_ISD200=m CONFIG_USB_STORAGE_USBAT=m CONFIG_USB_STORAGE_SDDR09=m CONFIG_USB_STORAGE_SDDR55=m CONFIG_USB_STORAGE_JUMPSHOT=m CONFIG_USB_STORAGE_ALAUDA=m CONFIG_USB_STORAGE_ONETOUCH=m CONFIG_USB_STORAGE_KARMA=m CONFIG_USB_STORAGE_CYPRESS_ATACB=m CONFIG_USB_STORAGE_ENE_UB6250=m CONFIG_USB_UAS=m
#
# USB Imaging devices
#CONFIG_USB_MDC800=mCONFIG_USB_MICROTEK=m
# CONFIG_USBIP_CORE is not set
# CONFIG_USB_MUSB_HDRC is not setCONFIG_USB_DWC3=y
# CONFIG_USB_DWC3_HOST is not setCONFIG_USB_DWC3_GADGET=y
# CONFIG_USB_DWC3_DUAL_ROLE is not set
#
# Platform Glue Driver Support
#CONFIG_USB_DWC3_PCI=y
# CONFIG_USB_DWC2 is not set
# CONFIG_USB_CHIPIDEA is not set
# CONFIG_USB_ISP1760 is not set
#
# USB port drivers
#CONFIG_USB_USS720=mCONFIG_USB_SERIAL=yCONFIG_USB_SERIAL_CONSOLE=yCONFIG_USB_SERIAL_GENERIC=y
# CONFIG_USB_SERIAL_SIMPLE is not setCONFIG_USB_SERIAL_AIRCABLE=mCONFIG_USB_SERIAL_ARK3116=mCONFIG_USB_SERIAL_BELKIN=mCONFIG_USB_SERIAL_CH341=mCONFIG_USB_SERIAL_WHITEHEAT=mCONFIG_USB_SERIAL_DIGI_ACCELEPORT=mCONFIG_USB_SERIAL_CP210X=mCONFIG_USB_SERIAL_CYPRESS_M8=mCONFIG_USB_SERIAL_EMPEG=mCONFIG_USB_SERIAL_FTDI_SIO=mCONFIG_USB_SERIAL_VISOR=mCONFIG_USB_SERIAL_IPAQ=mCONFIG_USB_SERIAL_IR=mCONFIG_USB_SERIAL_EDGEPORT=mCONFIG_USB_SERIAL_EDGEPORT_TI=m
# CONFIG_USB_SERIAL_F81232 is not set
# CONFIG_USB_SERIAL_F8153X is not setCONFIG_USB_SERIAL_GARMIN=mCONFIG_USB_SERIAL_IPW=mCONFIG_USB_SERIAL_IUU=mCONFIG_USB_SERIAL_KEYSPAN_PDA=mCONFIG_USB_SERIAL_KEYSPAN=mCONFIG_USB_SERIAL_KLSI=mCONFIG_USB_SERIAL_KOBIL_SCT=mCONFIG_USB_SERIAL_MCT_U232=m
# CONFIG_USB_SERIAL_METRO is not setCONFIG_USB_SERIAL_MOS7720=mCONFIG_USB_SERIAL_MOS7715_PARPORT=yCONFIG_USB_SERIAL_MOS7840=m
# CONFIG_USB_SERIAL_MXUPORT is not setCONFIG_USB_SERIAL_NAVMAN=mCONFIG_USB_SERIAL_PL2303=mCONFIG_USB_SERIAL_OTI6858=mCONFIG_USB_SERIAL_QCAUX=mCONFIG_USB_SERIAL_QUALCOMM=mCONFIG_USB_SERIAL_SPCP8X5=mCONFIG_USB_SERIAL_SAFE=mCONFIG_USB_SERIAL_SAFE_PADDED=yCONFIG_USB_SERIAL_SIERRAWIRELESS=mCONFIG_USB_SERIAL_SYMBOL=m
# CONFIG_USB_SERIAL_TI is not setCONFIG_USB_SERIAL_CYBERJACK=mCONFIG_USB_SERIAL_XIRCOM=mCONFIG_USB_SERIAL_WWAN=mCONFIG_USB_SERIAL_OPTION=mCONFIG_USB_SERIAL_OMNINET=mCONFIG_USB_SERIAL_OPTICON=mCONFIG_USB_SERIAL_XSENS_MT=m
# CONFIG_USB_SERIAL_WISHBONE is not setCONFIG_USB_SERIAL_SSU100=mCONFIG_USB_SERIAL_QT2=m
# CONFIG_USB_SERIAL_UPD78F0730 is not setCONFIG_USB_SERIAL_DEBUG=m
#
# USB Miscellaneous drivers
#CONFIG_USB_EMI62=mCONFIG_USB_EMI26=mCONFIG_USB_ADUTUX=mCONFIG_USB_SEVSEG=m
# CONFIG_USB_RIO500 is not setCONFIG_USB_LEGOTOWER=mCONFIG_USB_LCD=m
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not setCONFIG_USB_IDMOUSE=mCONFIG_USB_FTDI_ELAN=mCONFIG_USB_APPLEDISPLAY=mCONFIG_USB_SISUSBVGA=mCONFIG_USB_SISUSBVGA_CON=yCONFIG_USB_LD=m
# CONFIG_USB_TRANCEVIBRATOR is not setCONFIG_USB_IOWARRIOR=m
# CONFIG_USB_TEST is not set
# CONFIG_USB_EHSET_TEST_FIXTURE is not setCONFIG_USB_ISIGHTFW=m
# CONFIG_USB_YUREX is not setCONFIG_USB_EZUSB_FX2=m
# CONFIG_USB_HUB_USB251XB is not setCONFIG_USB_HSIC_USB3503=m
# CONFIG_USB_HSIC_USB4604 is not set
# CONFIG_USB_LINK_LAYER_TEST is not set
# CONFIG_USB_CHAOSKEY is not set
# CONFIG_UCSI is not setCONFIG_USB_ATM=mCONFIG_USB_SPEEDTOUCH=mCONFIG_USB_CXACRU=mCONFIG_USB_UEAGLEATM=mCONFIG_USB_XUSBATM=m
#
# USB Physical Layer drivers
#CONFIG_USB_PHY=yCONFIG_NOP_USB_XCEIV=y
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_USB_ISP1301 is not setCONFIG_USB_GADGET=y
# CONFIG_USB_GADGET_DEBUG is not set
# CONFIG_USB_GADGET_DEBUG_FILES is not set
# CONFIG_USB_GADGET_DEBUG_FS is not setCONFIG_USB_GADGET_VBUS_DRAW=2CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2
#
# USB Peripheral Controller
#
# CONFIG_USB_FOTG210_UDC is not set
# CONFIG_USB_GR_UDC is not set
# CONFIG_USB_R8A66597 is not set
# CONFIG_USB_PXA27X is not set
# CONFIG_USB_MV_UDC is not set
# CONFIG_USB_MV_U3D is not set
# CONFIG_USB_M66592 is not set
# CONFIG_USB_BDC_UDC is not set
# CONFIG_USB_AMD5536UDC is not set
# CONFIG_USB_NET2272 is not set
# CONFIG_USB_NET2280 is not set
# CONFIG_USB_GOKU is not set
# CONFIG_USB_EG20T is not set
# CONFIG_USB_DUMMY_HCD is not setCONFIG_USB_LIBCOMPOSITE=mCONFIG_USB_F_MASS_STORAGE=m
# CONFIG_USB_CONFIGFS is not set
# CONFIG_USB_ZERO is not set
# CONFIG_USB_AUDIO is not set
# CONFIG_USB_ETH is not set
# CONFIG_USB_G_NCM is not set
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_FUNCTIONFS is not setCONFIG_USB_MASS_STORAGE=m
# CONFIG_USB_GADGET_TARGET is not set
# CONFIG_USB_G_SERIAL is not set
# CONFIG_USB_MIDI_GADGET is not set
# CONFIG_USB_G_PRINTER is not set
# CONFIG_USB_CDC_COMPOSITE is not set
# CONFIG_USB_G_ACM_MS is not set
# CONFIG_USB_G_MULTI is not set
# CONFIG_USB_G_HID is not set
# CONFIG_USB_G_DBGP is not set
# CONFIG_USB_G_WEBCAM is not set
# CONFIG_USB_LED_TRIG is not set
# CONFIG_USB_ULPI_BUS is not setCONFIG_UWB=mCONFIG_UWB_HWA=mCONFIG_UWB_WHCI=mCONFIG_UWB_I1480U=mCONFIG_MMC=m
# CONFIG_MMC_DEBUG is not setCONFIG_MMC_BLOCK=mCONFIG_MMC_BLOCK_MINORS=8CONFIG_MMC_BLOCK_BOUNCE=yCONFIG_SDIO_UART=m
# CONFIG_MMC_TEST is not set
#
# MMC/SD/SDIO Host Controller Drivers
#CONFIG_MMC_SDHCI=mCONFIG_MMC_SDHCI_PCI=mCONFIG_MMC_RICOH_MMC=yCONFIG_MMC_SDHCI_ACPI=mCONFIG_MMC_SDHCI_PLTFM=m
# CONFIG_MMC_WBSD is not setCONFIG_MMC_TIFM_SD=m
# CONFIG_MMC_SPI is not setCONFIG_MMC_CB710=mCONFIG_MMC_VIA_SDMMC=mCONFIG_MMC_VUB300=mCONFIG_MMC_USHC=m
# CONFIG_MMC_USDHI6ROL0 is not setCONFIG_MMC_REALTEK_PCI=m
# CONFIG_MMC_TOSHIBA_PCI is not set
# CONFIG_MMC_MTK is not setCONFIG_MEMSTICK=m
# CONFIG_MEMSTICK_DEBUG is not set
#
# MemoryStick drivers
#
# CONFIG_MEMSTICK_UNSAFE_RESUME is not setCONFIG_MSPRO_BLOCK=m
# CONFIG_MS_BLOCK is not set
#
# MemoryStick Host Controller Drivers
#CONFIG_MEMSTICK_TIFM_MS=mCONFIG_MEMSTICK_JMICRON_38X=mCONFIG_MEMSTICK_R592=mCONFIG_MEMSTICK_REALTEK_PCI=mCONFIG_NEW_LEDS=yCONFIG_LEDS_CLASS=y
# CONFIG_LEDS_CLASS_FLASH is not set
# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set
#
# LED drivers
#CONFIG_LEDS_LM3530=m
# CONFIG_LEDS_LM3642 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_GPIO is not setCONFIG_LEDS_LP3944=m
# CONFIG_LEDS_LP3952 is not setCONFIG_LEDS_LP55XX_COMMON=mCONFIG_LEDS_LP5521=mCONFIG_LEDS_LP5523=mCONFIG_LEDS_LP5562=m
# CONFIG_LEDS_LP8501 is not set
# CONFIG_LEDS_LP8860 is not setCONFIG_LEDS_CLEVO_MAIL=m
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_PCA963X is not set
# CONFIG_LEDS_DAC124S085 is not set
# CONFIG_LEDS_PWM is not set
# CONFIG_LEDS_BD2802 is not setCONFIG_LEDS_INTEL_SS4200=m
# CONFIG_LEDS_LT3593 is not set
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_TLC591XX is not set
# CONFIG_LEDS_LM355x is not set
#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM) #CONFIG_LEDS_BLINKM=m
# CONFIG_LEDS_MLXCPLD is not set
# CONFIG_LEDS_USER is not set
# CONFIG_LEDS_NIC78BX is not set
#
# LED Triggers
#CONFIG_LEDS_TRIGGERS=yCONFIG_LEDS_TRIGGER_TIMER=mCONFIG_LEDS_TRIGGER_ONESHOT=m
# CONFIG_LEDS_TRIGGER_DISK is not set
# CONFIG_LEDS_TRIGGER_MTD is not setCONFIG_LEDS_TRIGGER_HEARTBEAT=mCONFIG_LEDS_TRIGGER_BACKLIGHT=m
# CONFIG_LEDS_TRIGGER_CPU is not set
# CONFIG_LEDS_TRIGGER_GPIO is not setCONFIG_LEDS_TRIGGER_DEFAULT_ON=m
#
# iptables trigger is under Netfilter config (LED target) # CONFIG_LEDS_TRIGGER_TRANSIENT=m CONFIG_LEDS_TRIGGER_CAMERA=m # CONFIG_LEDS_TRIGGER_PANIC is not set # CONFIG_ACCESSIBILITY is not set # CONFIG_INFINIBAND is not set CONFIG_EDAC_ATOMIC_SCRUB=y CONFIG_EDAC_SUPPORT=y CONFIG_EDAC=y CONFIG_EDAC_LEGACY_SYSFS=y # CONFIG_EDAC_DEBUG is not set CONFIG_EDAC_DECODE_MCE=m CONFIG_EDAC_MM_EDAC=m CONFIG_EDAC_AMD64=m # CONFIG_EDAC_AMD64_ERROR_INJECTION is not set CONFIG_EDAC_E752X=m CONFIG_EDAC_I82975X=m CONFIG_EDAC_I3000=m CONFIG_EDAC_I3200=m # CONFIG_EDAC_IE31200 is not set CONFIG_EDAC_X38=m CONFIG_EDAC_I5400=m CONFIG_EDAC_I7CORE=m CONFIG_EDAC_I5000=m CONFIG_EDAC_I5100=m CONFIG_EDAC_I7300=m CONFIG_EDAC_SBRIDGE=m # CONFIG_EDAC_SKX is not set # CONFIG_EDAC_PND2 is not set CONFIG_RTC_LIB=y CONFIG_RTC_MC146818_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc0" # CONFIG_RTC_SYSTOHC is not set # CONFIG_RTC_DEBUG is not set
#
# RTC interfaces
#CONFIG_RTC_INTF_SYSFS=yCONFIG_RTC_INTF_PROC=yCONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set
#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_ABB5ZES3 is not set
# CONFIG_RTC_DRV_ABX80X is not setCONFIG_RTC_DRV_DS1307=mCONFIG_RTC_DRV_DS1307_HWMON=y
# CONFIG_RTC_DRV_DS1307_CENTURY is not setCONFIG_RTC_DRV_DS1374=m
# CONFIG_RTC_DRV_DS1374_WDT is not setCONFIG_RTC_DRV_DS1672=mCONFIG_RTC_DRV_MAX6900=mCONFIG_RTC_DRV_RS5C372=mCONFIG_RTC_DRV_ISL1208=mCONFIG_RTC_DRV_ISL12022=mCONFIG_RTC_DRV_X1205=mCONFIG_RTC_DRV_PCF8523=m
# CONFIG_RTC_DRV_PCF85063 is not setCONFIG_RTC_DRV_PCF8563=mCONFIG_RTC_DRV_PCF8583=mCONFIG_RTC_DRV_M41T80=mCONFIG_RTC_DRV_M41T80_WDT=yCONFIG_RTC_DRV_BQ32K=m
# CONFIG_RTC_DRV_S35390A is not setCONFIG_RTC_DRV_FM3130=m
# CONFIG_RTC_DRV_RX8010 is not setCONFIG_RTC_DRV_RX8581=mCONFIG_RTC_DRV_RX8025=mCONFIG_RTC_DRV_EM3027=m
# CONFIG_RTC_DRV_RV8803 is not set
#
# SPI RTC drivers
#
# CONFIG_RTC_DRV_M41T93 is not set
# CONFIG_RTC_DRV_M41T94 is not set
# CONFIG_RTC_DRV_DS1302 is not set
# CONFIG_RTC_DRV_DS1305 is not set
# CONFIG_RTC_DRV_DS1343 is not set
# CONFIG_RTC_DRV_DS1347 is not set
# CONFIG_RTC_DRV_DS1390 is not set
# CONFIG_RTC_DRV_MAX6916 is not set
# CONFIG_RTC_DRV_R9701 is not set
# CONFIG_RTC_DRV_RX4581 is not set
# CONFIG_RTC_DRV_RX6110 is not set
# CONFIG_RTC_DRV_RS5C348 is not set
# CONFIG_RTC_DRV_MAX6902 is not set
# CONFIG_RTC_DRV_PCF2123 is not set
# CONFIG_RTC_DRV_MCP795 is not setCONFIG_RTC_I2C_AND_SPI=y
#
# SPI and I2C RTC drivers
#CONFIG_RTC_DRV_DS3232=m
# CONFIG_RTC_DRV_PCF2127 is not setCONFIG_RTC_DRV_RV3029C2=mCONFIG_RTC_DRV_RV3029_HWMON=y
#
# Platform RTC drivers
#CONFIG_RTC_DRV_CMOS=yCONFIG_RTC_DRV_DS1286=mCONFIG_RTC_DRV_DS1511=mCONFIG_RTC_DRV_DS1553=m
# CONFIG_RTC_DRV_DS1685_FAMILY is not setCONFIG_RTC_DRV_DS1742=mCONFIG_RTC_DRV_DS2404=mCONFIG_RTC_DRV_STK17TA8=m
# CONFIG_RTC_DRV_M48T86 is not setCONFIG_RTC_DRV_M48T35=mCONFIG_RTC_DRV_M48T59=mCONFIG_RTC_DRV_MSM6242=mCONFIG_RTC_DRV_BQ4802=mCONFIG_RTC_DRV_RP5C01=mCONFIG_RTC_DRV_V3020=m
#
# on-CPU RTC drivers
#
#
# HID Sensor RTC drivers
#
# CONFIG_RTC_DRV_HID_SENSOR_TIME is not setCONFIG_DMADEVICES=y
# CONFIG_DMADEVICES_DEBUG is not set
#
# DMA Devices
#CONFIG_DMA_ENGINE=yCONFIG_DMA_VIRTUAL_CHANNELS=yCONFIG_DMA_ACPI=y
# CONFIG_INTEL_IDMA64 is not set
# CONFIG_INTEL_IOATDMA is not set
# CONFIG_QCOM_HIDMA_MGMT is not set
# CONFIG_QCOM_HIDMA is not setCONFIG_DW_DMAC_CORE=yCONFIG_DW_DMAC=mCONFIG_DW_DMAC_PCI=yCONFIG_HSU_DMA=y
#
# DMA Clients
#CONFIG_ASYNC_TX_DMA=yCONFIG_DMATEST=m
#
# DMABUF options
#CONFIG_SYNC_FILE=yCONFIG_SW_SYNC=yCONFIG_AUXDISPLAY=yCONFIG_KS0108=mCONFIG_KS0108_PORT=0x378CONFIG_KS0108_DELAY=2CONFIG_CFAG12864B=mCONFIG_CFAG12864B_RATE=20
# CONFIG_IMG_ASCII_LCD is not setCONFIG_UIO=mCONFIG_UIO_CIF=mCONFIG_UIO_PDRV_GENIRQ=m
# CONFIG_UIO_DMEM_GENIRQ is not setCONFIG_UIO_AEC=mCONFIG_UIO_SERCOS3=mCONFIG_UIO_PCI_GENERIC=m
# CONFIG_UIO_NETX is not set
# CONFIG_UIO_PRUSS is not set
# CONFIG_UIO_MF624 is not set
# CONFIG_UIO_HV_GENERIC is not setCONFIG_VFIO_IOMMU_TYPE1=mCONFIG_VFIO_VIRQFD=mCONFIG_VFIO=m
# CONFIG_VFIO_NOIOMMU is not setCONFIG_VFIO_PCI=m
# CONFIG_VFIO_PCI_VGA is not setCONFIG_VFIO_PCI_MMAP=yCONFIG_VFIO_PCI_INTX=yCONFIG_VFIO_PCI_IGD=y
# CONFIG_VFIO_MDEV is not setCONFIG_IRQ_BYPASS_MANAGER=m
# CONFIG_VIRT_DRIVERS is not setCONFIG_VIRTIO=y
#
# Virtio drivers
#CONFIG_VIRTIO_PCI=yCONFIG_VIRTIO_PCI_LEGACY=yCONFIG_VIRTIO_BALLOON=y
# CONFIG_VIRTIO_INPUT is not set
# CONFIG_VIRTIO_MMIO is not set
#
# Microsoft Hyper-V guest support
#CONFIG_HYPERV=mCONFIG_HYPERV_UTILS=mCONFIG_HYPERV_BALLOON=m
#
# Xen driver support
#CONFIG_XEN_BALLOON=y
# CONFIG_XEN_SELFBALLOONING is not set
# CONFIG_XEN_BALLOON_MEMORY_HOTPLUG is not setCONFIG_XEN_SCRUB_PAGES=yCONFIG_XEN_DEV_EVTCHN=mCONFIG_XEN_BACKEND=yCONFIG_XENFS=mCONFIG_XEN_COMPAT_XENFS=yCONFIG_XEN_SYS_HYPERVISOR=yCONFIG_XEN_XENBUS_FRONTEND=y
# CONFIG_XEN_GNTDEV is not set
# CONFIG_XEN_GRANT_DEV_ALLOC is not setCONFIG_SWIOTLB_XEN=yCONFIG_XEN_TMEM=mCONFIG_XEN_PCIDEV_BACKEND=m
# CONFIG_XEN_SCSI_BACKEND is not setCONFIG_XEN_PRIVCMD=mCONFIG_XEN_ACPI_PROCESSOR=m
# CONFIG_XEN_MCE_LOG is not setCONFIG_XEN_HAVE_PVMMU=yCONFIG_XEN_EFI=yCONFIG_XEN_AUTO_XLATE=yCONFIG_XEN_ACPI=yCONFIG_XEN_SYMS=yCONFIG_XEN_HAVE_VPMU=yCONFIG_STAGING=y
# CONFIG_PRISM2_USB is not set
# CONFIG_COMEDI is not set
# CONFIG_RTL8192U is not setCONFIG_RTLLIB=mCONFIG_RTLLIB_CRYPTO_CCMP=mCONFIG_RTLLIB_CRYPTO_TKIP=mCONFIG_RTLLIB_CRYPTO_WEP=mCONFIG_RTL8192E=mCONFIG_R8712U=m
# CONFIG_R8188EU is not set
# CONFIG_RTS5208 is not set
# CONFIG_VT6655 is not set
# CONFIG_VT6656 is not set
# CONFIG_FB_SM750 is not set
# CONFIG_FB_XGI is not set
#
# Speakup console speech
#
# CONFIG_SPEAKUP is not set
# CONFIG_STAGING_MEDIA is not set
#
# Android
#
# CONFIG_LTE_GDM724X is not setCONFIG_FIREWIRE_SERIAL=mCONFIG_FWTTY_MAX_TOTAL_PORTS=64CONFIG_FWTTY_MAX_CARD_PORTS=32
# CONFIG_LNET is not set
# CONFIG_DGNC is not set
# CONFIG_GS_FPGABOOT is not set
# CONFIG_CRYPTO_SKEIN is not set
# CONFIG_UNISYSSPAR is not set
# CONFIG_FB_TFT is not set
# CONFIG_WILC1000_SDIO is not set
# CONFIG_WILC1000_SPI is not set
# CONFIG_MOST is not set
# CONFIG_KS7010 is not set
# CONFIG_GREYBUS is not setCONFIG_X86_PLATFORM_DEVICES=yCONFIG_ACER_WMI=mCONFIG_ACERHDF=m
# CONFIG_ALIENWARE_WMI is not setCONFIG_ASUS_LAPTOP=m
# CONFIG_DELL_LAPTOP is not set
# CONFIG_DELL_WMI is not setCONFIG_DELL_WMI_AIO=m
# CONFIG_DELL_SMO8800 is not set
# CONFIG_DELL_RBTN is not setCONFIG_FUJITSU_LAPTOP=m
# CONFIG_FUJITSU_LAPTOP_DEBUG is not setCONFIG_FUJITSU_TABLET=mCONFIG_AMILO_RFKILL=mCONFIG_HP_ACCEL=m
# CONFIG_HP_WIRELESS is not setCONFIG_HP_WMI=mCONFIG_MSI_LAPTOP=mCONFIG_PANASONIC_LAPTOP=mCONFIG_COMPAL_LAPTOP=mCONFIG_SONY_LAPTOP=mCONFIG_SONYPI_COMPAT=yCONFIG_IDEAPAD_LAPTOP=m
# CONFIG_SURFACE3_WMI is not setCONFIG_THINKPAD_ACPI=mCONFIG_THINKPAD_ACPI_ALSA_SUPPORT=y
# CONFIG_THINKPAD_ACPI_DEBUGFACILITIES is not set
# CONFIG_THINKPAD_ACPI_DEBUG is not set
# CONFIG_THINKPAD_ACPI_UNSAFE_LEDS is not setCONFIG_THINKPAD_ACPI_VIDEO=yCONFIG_THINKPAD_ACPI_HOTKEY_POLL=yCONFIG_SENSORS_HDAPS=m
# CONFIG_INTEL_MENLOW is not setCONFIG_EEEPC_LAPTOP=mCONFIG_ASUS_WMI=mCONFIG_ASUS_NB_WMI=mCONFIG_EEEPC_WMI=m
# CONFIG_ASUS_WIRELESS is not setCONFIG_ACPI_WMI=mCONFIG_MSI_WMI=mCONFIG_TOPSTAR_LAPTOP=mCONFIG_TOSHIBA_BT_RFKILL=m
# CONFIG_TOSHIBA_HAPS is not set
# CONFIG_TOSHIBA_WMI is not setCONFIG_ACPI_CMPC=m
# CONFIG_INTEL_HID_EVENT is not set
# CONFIG_INTEL_VBTN is not setCONFIG_INTEL_IPS=m
# CONFIG_INTEL_PMC_CORE is not set
# CONFIG_IBM_RTL is not setCONFIG_SAMSUNG_LAPTOP=mCONFIG_MXM_WMI=mCONFIG_INTEL_OAKTRAIL=mCONFIG_SAMSUNG_Q10=mCONFIG_APPLE_GMUX=m
# CONFIG_INTEL_RST is not set
# CONFIG_INTEL_SMARTCONNECT is not setCONFIG_PVPANIC=y
# CONFIG_INTEL_PMC_IPC is not set
# CONFIG_SURFACE_PRO3_BUTTON is not set
# CONFIG_INTEL_PUNIT_IPC is not set
# CONFIG_MLX_PLATFORM is not set
# CONFIG_MLX_CPLD_PLATFORM is not set
# CONFIG_INTEL_TURBO_MAX_3 is not set
# CONFIG_SILEAD_DMI is not setCONFIG_PMC_ATOM=y
# CONFIG_CHROME_PLATFORMS is not setCONFIG_CLKDEV_LOOKUP=yCONFIG_HAVE_CLK_PREPARE=yCONFIG_COMMON_CLK=y
#
# Common Clock Framework
#
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_CDCE706 is not set
# CONFIG_COMMON_CLK_CS2000_CP is not set
# CONFIG_COMMON_CLK_NXP is not set
# CONFIG_COMMON_CLK_PWM is not set
# CONFIG_COMMON_CLK_PXA is not set
# CONFIG_COMMON_CLK_PIC32 is not set
#
# Hardware Spinlock drivers
#
#
# Clock Source drivers
#CONFIG_CLKEVT_I8253=yCONFIG_I8253_LOCK=yCONFIG_CLKBLD_I8253=y
# CONFIG_ATMEL_PIT is not set
# CONFIG_SH_TIMER_CMT is not set
# CONFIG_SH_TIMER_MTU2 is not set
# CONFIG_SH_TIMER_TMU is not set
# CONFIG_EM_TIMER_STI is not setCONFIG_MAILBOX=yCONFIG_PCC=y
# CONFIG_ALTERA_MBOX is not setCONFIG_IOMMU_API=yCONFIG_IOMMU_SUPPORT=y
#
# Generic IOMMU Pagetable Support
#CONFIG_IOMMU_IOVA=yCONFIG_AMD_IOMMU=yCONFIG_AMD_IOMMU_V2=mCONFIG_DMAR_TABLE=yCONFIG_INTEL_IOMMU=y
# CONFIG_INTEL_IOMMU_SVM is not set
# CONFIG_INTEL_IOMMU_DEFAULT_ON is not setCONFIG_INTEL_IOMMU_FLOPPY_WA=yCONFIG_IRQ_REMAP=y
#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
#
# Rpmsg drivers
#
#
# SOC (System On Chip) specific Drivers
#
#
# Broadcom SoC drivers
#
# CONFIG_SUNXI_SRAM is not set
# CONFIG_SOC_TI is not set
# CONFIG_SOC_ZTE is not setCONFIG_PM_DEVFREQ=y
#
# DEVFREQ Governors
#CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=m
# CONFIG_DEVFREQ_GOV_PERFORMANCE is not set
# CONFIG_DEVFREQ_GOV_POWERSAVE is not set
# CONFIG_DEVFREQ_GOV_USERSPACE is not set
# CONFIG_DEVFREQ_GOV_PASSIVE is not set
#
# DEVFREQ Drivers
#
# CONFIG_PM_DEVFREQ_EVENT is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not setCONFIG_NTB=m
# CONFIG_NTB_AMD is not set
# CONFIG_NTB_INTEL is not set
# CONFIG_NTB_PINGPONG is not set
# CONFIG_NTB_TOOL is not set
# CONFIG_NTB_PERF is not set
# CONFIG_NTB_TRANSPORT is not set
# CONFIG_VME_BUS is not setCONFIG_PWM=yCONFIG_PWM_SYSFS=y
# CONFIG_PWM_LPSS_PCI is not set
# CONFIG_PWM_LPSS_PLATFORM is not set
# CONFIG_PWM_PCA9685 is not setCONFIG_ARM_GIC_MAX_NR=1
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
# CONFIG_FMC is not set
1,289 lines not shown · raw message
Part of this message is not shown here. View the raw message.
Re: [PATCH RFC net-next v4 3/7] sk_buff: remove support for csum_bad in sk_buff
In reply to Davide CarattiQuoted 183 lines · Davide Caratti
This bit was introduced with
5a21232983aa("net: Support forcsum_badin skbuff") to reduce the stack workload when processing RX packets carrying a wrong Internet Checksum. Up to now, only one driver (besides GRO core) are setting it.
The test on NAPI_GRO_CB(skb)->flush indev_gro_receive()is now done before the test onsame_flow, to preserve behavior in case of wrong checksum.Suggested-by Tom Herbert <[email protected]>Signed-off-by Davide Caratti <[email protected]>--- drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 2 +- include/linux/netdevice.h | 4 +--- include/linux/skbuff.h | 23 ++--------------------- net/bridge/netfilter/nft_reject_bridge.c | 5 +---- net/core/dev.c | 8 +++----- net/ipv4/netfilter/nf_reject_ipv4.c | 2 +- net/ipv6/netfilter/nf_reject_ipv6.c | 3 --- 7 files changed, 9 insertions(+), 38 deletions(-)drivers/net/ethernet/aquantia/atlantic/aq_ring.c +1
-1@@ -223,7 +223,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget) skb->protocol =eth_type_trans (skb, ndev);if (unlikely (buff->is_cso_err)) { ++self->stats.rx.errors; -__skb_mark_checksum_bad (skb); + skb->ip_summed =CHECKSUM_NONE ; }else {if (buff->is_ip_cso) {__skb_incr_checksum_unnecessary (skb);include/linux/netdevice.h +1
-3@@ -2546,9 +2546,7 @@ static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)if (__skb_gro_checksum_validate_needed (skb, zero_okay, check)) \ __ret =__skb_gro_checksum_validate_complete (skb, \compute_pseudo (skb, proto)); \ -if (__ret) \ -__skb_mark_checksum_bad (skb); \ -else \ +if (!__ret) \skb_gro_incr_csum_unnecessary (skb); \ __ret; \ })include/linux/skbuff.h +2
-21@@ -743,7 +743,7 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 csum_bad:1; + __u8 __csum_bad_unused:1; /* one bit hole */ __u8 dst_pending_confirm:1;#ifdef CONFIG_IPV6_NDISC_NODETYPE @@ -3387,21 +3387,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb) } } -static inline void __skb_mark_checksum_bad (struct sk_buff *skb) -{ -/* Mark current checksum as bad (typically called from GRO -* path). In the case that ip_summed is CHECKSUM_NONE -* this must be the first checksum encountered in the packet. -* When ip_summed is CHECKSUM_UNNECESSARY, this is the first -* checksum after the last one validated. For UDP, a zero -* checksum can not be marked as bad. -*/ - -if (skb->ip_summed =CHECKSUM_NONE || - skb->ip_summed =CHECKSUM_UNNECESSARY ) - skb->csum_bad =1 ; -} -/* Check if we need to perform checksum complete validation. * * Returns true if checksum complete is needed, false otherwise @@ -3455,9 +3440,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb, skb->csum_valid =1 ;return 0 ; } - }else if (skb->csum_bad) { -/* ip_summed = CHECKSUM_NONE in this case */ -return (__force __sum16 )1 ; } skb->csum = psum;@@ -3517,8 +3499,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto)static inline bool __skb_checksum_convert_check (struct sk_buff *skb) { -return (skb->ip_summed =CHECKSUM_NONE && - skb->csum_valid && !skb->csum_bad); +return (skb->ip_summed =CHECKSUM_NONE && skb->csum_valid); } static inline void __skb_checksum_convert(struct sk_buff *skb,net/bridge/netfilter/nft_reject_bridge.c +1
-4@@ -111,7 +111,7 @@ static void nft_reject_br_send_v4_unreach(struct net *net,__wsum csum;u8 proto; -if (oldskb->csum_bad || !nft_bridge_iphdr_validate (oldskb)) +if (!nft_bridge_iphdr_validate (oldskb))return ;/* IP header checks: fragment. */ @@ -226,9 +226,6 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)__be16 fo;u8 proto = ip6h->nexthdr; -if (skb->csum_bad) -return false; -if (skb_csum_unnecessary (skb))return true;net/core/dev.c +3
-5@@ -4533,9 +4533,6 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buffif (!(skb->dev->features &NETIF_F_GRO )) goto normal; -if (skb->csum_bad) - goto normal; -gro_list_prepare (napi, skb);rcu_read_lock ();@@ -4595,11 +4592,12 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff napi->gro_count--; } +if (NAPI_GRO_CB (skb)->flush) + goto normal; +if (same_flow) goto ok; -if (NAPI_GRO_CB (skb)->flush) - goto normal;if (unlikely (napi->gro_count >=MAX_GRO_SKBS )) {struct sk_buff *nskb = napi->gro_list;net/ipv4/netfilter/nf_reject_ipv4.c +1
-1@@ -172,7 +172,7 @@ void nf_send_unreach(struct sk_buff *skb_in, int code, int hook)struct iphdr *iph =ip_hdr (skb_in);u8 proto; -if (skb_in->csum_bad || iph->frag_off &htons (IP_OFFSET )) +if (iph->frag_off &htons (IP_OFFSET ))return ;if (skb_csum_unnecessary (skb_in)) {net/ipv6/netfilter/nf_reject_ipv6.c +0
-4@@ -220,9 +220,6 @@ static bool reject6_csum_ok(struct sk_buff *skb, int hook)__be16 fo;u8 proto; -if (skb->csum_bad) -return false; -if (skb_csum_unnecessary (skb))return true; --
Quoted 2 lines
2.7.4
RFC PATCH v4 4/7 net: use skb->csum_not_inet to identify packets needing crc32c
In reply to Tom Herbertskb->csum_not_inet carries the indication on which algorithm is needed to compute checksum on skb in the transmit path, when skb->ip_summed is equal to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been yet written in L4 header, skb->csum_not_inet is assigned to 1; otherwise, assume Internet Checksum is needed and thus set skb->csum_not_inet to 0.
--- include/linux/skbuff.h | 16 +++++++++------- net/core/dev.c | 1 + net/sched/act_csum.c | 1 + net/sctp/offload.c | 1 + net/sctp/output.c | 1 + 5 files changed, 13 insertions(+), 7 deletions(-)
include/linux/skbuff.h +9 -7
@@ -189,12 +189,13 @@* * NETIF_F_SCTP_CRC - This feature indicates that a device is capable of * offloading the SCTP CRC in a packet. To perform this offload the stack -* will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset -* accordingly. Note the there is no indication in the skbuff that the -* CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports -* both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers; in -* case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets. +* will set set csum_start and csum_offset accordingly, set ip_summed to +* CHECKSUM_PARTIAL and set csum_not_inet to 1, to provide an indication in +* the skbuff that the CHECKSUM_PARTIAL refers to CRC32c. +* A driver that supports both IP checksum offload and SCTP CRC32c offload +* must verify which offload is configured for a packet by testing the +* value of skb->csum_not_inet; skb_crc32c_csum_help is provided to resolve +* CHECKSUM_PARTIAL on skbs where csum_not_inet is set to 1. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack
@@ -615,6 +616,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,* @wifi_acked_valid: wifi_acked was set * @wifi_acked: whether frame was acked on wifi or not * @no_fcs: Request NIC to treat last 4 bytes as Ethernet FCS +* @csum_not_inet: use CRC32c to resolve CHECKSUM_PARTIAL * @dst_pending_confirm: need to confirm neighbour * @napi_id: id of the NAPI struct this skb came from * @secmark: security marking
@@ -743,7 +745,7 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 __csum_bad_unused:1; /* one bit hole */ + __u8 csum_not_inet:1; __u8 dst_pending_confirm:1;#ifdef CONFIG_IPV6_NDISC_NODETYPE
net/core/dev.c +1 -0
@@ -2642,6 +2642,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb) } *(__le32 *)(skb->data + offset) = crc32c_csum; skb->ip_summed =CHECKSUM_NONE ; + skb->csum_not_inet =0 ; out:return ret; }
net/sched/act_csum.c +1 -0
@@ -350,6 +350,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl, sctph->checksum =sctp_compute_cksum (skb,skb_network_offset (skb) + ihl); skb->ip_summed =CHECKSUM_NONE ; + skb->csum_not_inet =0 ;return 1 ; }
net/sctp/offload.c +1 -0
@@ -35,6 +35,7 @@static __le32 sctp_gso_make_checksum (struct sk_buff *skb) { skb->ip_summed =CHECKSUM_NONE ; + skb->csum_not_inet =0 ;return sctp_compute_cksum (skb,skb_transport_offset (skb)); }
net/sctp/output.c +1 -0
@@ -538,6 +538,7 @@ static int sctp_packet_pack(struct sctp_packet *packet, }else { chksum: head->ip_summed =CHECKSUM_PARTIAL ; + head->csum_not_inet =1 ; head->csum_start =skb_transport_header (head) - head->head; head->csum_offset = offsetof(struct sctphdr , checksum); }
Signature · 1 line
2.7.4
Re: [PATCH RFC net-next v4 4/7] net: use skb->csum_not_inet to identify packets needing crc32c
Quoted 106 lines · Davide Caratti
skb->csum_not_inetcarries the indication on which algorithm is needed to compute checksum on skb in the transmit path, whenskb->ip_summedis equal toCHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been yet written in L4 header,skb->csum_not_inetis assigned to 1; otherwise, assume Internet Checksum is needed and thus setskb->csum_not_inetto 0.Suggested-by Tom Herbert <[email protected]>Signed-off-by Davide Caratti <[email protected]>--- include/linux/skbuff.h | 16 +++++++++------- net/core/dev.c | 1 + net/sched/act_csum.c | 1 + net/sctp/offload.c | 1 + net/sctp/output.c | 1 + 5 files changed, 13 insertions(+), 7 deletions(-)include/linux/skbuff.h +9
-7@@ -189,12 +189,13 @@* * NETIF_F_SCTP_CRC - This feature indicates that a device is capable of * offloading the SCTP CRC in a packet. To perform this offload the stack -* will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset -* accordingly. Note the there is no indication in the skbuff that the -* CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports -* both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers; in -* case, skb_crc32c_csum_help is provided to compute CRC on SCTP packets. +* will set set csum_start and csum_offset accordingly, set ip_summed to +* CHECKSUM_PARTIAL and set csum_not_inet to 1, to provide an indication in +* the skbuff that the CHECKSUM_PARTIAL refers to CRC32c. +* A driver that supports both IP checksum offload and SCTP CRC32c offload +* must verify which offload is configured for a packet by testing the +* value of skb->csum_not_inet; skb_crc32c_csum_help is provided to resolve +* CHECKSUM_PARTIAL on skbs where csum_not_inet is set to 1. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack @@ -615,6 +616,7 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1,* @wifi_acked_valid: wifi_acked was set * @wifi_acked: whether frame was acked on wifi or not * @no_fcs: Request NIC to treat last 4 bytes as Ethernet FCS +* @csum_not_inet: use CRC32c to resolve CHECKSUM_PARTIAL * @dst_pending_confirm: need to confirm neighbour * @napi_id: id of the NAPI struct this skb came from * @secmark: security marking @@ -743,7 +745,7 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 __csum_bad_unused:1; /* one bit hole */ + __u8 csum_not_inet:1; __u8 dst_pending_confirm:1;#ifdef CONFIG_IPV6_NDISC_NODETYPE net/core/dev.c +1
-0@@ -2642,6 +2642,7 @@ int skb_crc32c_csum_help(struct sk_buff *skb) } *(__le32 *)(skb->data + offset) = crc32c_csum; skb->ip_summed =CHECKSUM_NONE ; + skb->csum_not_inet =0 ; out:return ret; }net/sched/act_csum.c +1
-0@@ -350,6 +350,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl, sctph->checksum =sctp_compute_cksum (skb,skb_network_offset (skb) + ihl); skb->ip_summed =CHECKSUM_NONE ; + skb->csum_not_inet =0 ;return 1 ; }net/sctp/offload.c +1
-0@@ -35,6 +35,7 @@static __le32 sctp_gso_make_checksum (struct sk_buff *skb) { skb->ip_summed =CHECKSUM_NONE ; + skb->csum_not_inet =0 ;return sctp_compute_cksum (skb,skb_transport_offset (skb)); }net/sctp/output.c +1
-1@@ -538,6 +538,7 @@ static int sctp_packet_pack(struct sctp_packet *packet, }else { chksum: head->ip_summed =CHECKSUM_PARTIAL ; + head->csum_not_inet =1 ; head->csum_start =skb_transport_header (head) - head->head; head->csum_offset = offsetof(struct sctphdr , checksum); } --
Quoted 2 lines
2.7.4
Looks great!
RFC PATCH v4 5/7 net: more accurate checksumming in validate_xmit_skb()
In reply to Tom Herbertskb_csum_hwoffload_help() uses netdev features and skb->csum_not_inet to determine if skb needs software computation of Internet Checksum or crc32c (or nothing, if this computation can be done by the hardware). Use it in place of skb_checksum_help() in validate_xmit_skb() to avoid corruption of non-GSO SCTP packets having skb->ip_summed equal to CHECKSUM_PARTIAL.
While at it, remove references to skb_csum_off_chk* functions, since they are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').
--- Documentation/networking/checksum-offloads.txt | 11 +++++++---- include/linux/netdevice.h | 3 +++ include/linux/skbuff.h | 13 +++++-------- net/core/dev.c | 14 ++++++++++++-- 4 files changed, 27 insertions(+), 14 deletions(-)
Documentation/networking/checksum-offloads.txt +7 -4
@@ -35,6 +35,9 @@ This interface only allows a single checksum to be offloaded. Where encapsulation is used, the packet may have multiple checksum fields in different header layers, and the rest will have to be handled by another mechanism such as LCO or RCO. +CRC32c can also be offloaded using this interface, by means of filling + skb->csum_start and skb->csum_offset as described above, and setting + skb->csum_not_inet: see skbuff.h comment (section 'D') for more details. No offloading of the IP header checksum is performed; it is always done in software. This is OK because when we build the IP header, we obviously have it in cache, so summing it isn't expensive. It's also rather short.
@@ -49,9 +52,9 @@ A driver declares its offload capabilities in netdev->hw_features; see and csum_offset given in the SKB; if it tries to deduce these itself in hardware (as some NICs do) the driver should check that the values in the SKB match those which the hardware will deduce, and if not, fall back to - checksumming in software instead (with skb_checksum_help or one of the - skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h). This - is a pain, but that's what you get when hardware tries to be clever. + checksumming in software instead (with skb_csum_hwoffload_help() or one of + the skb_checksum_help() / skb_crc32c_csum_help functions, as mentioned in + include/linux/skbuff.h). The stack should, for the most part, assume that checksum offload is supported by the underlying device. The only place that should check is
@@ -60,7 +63,7 @@ The stack should, for the most part, assume that checksum offload is may include other offloads besides TX Checksum Offload) and, if they are not supported or enabled on the device (determined by netdev->features), performs the corresponding offload in software. In the case of TX - Checksum Offload, that means calling skb_checksum_help(skb). + Checksum Offload, that means calling skb_csum_hwoffload_help(skb, features). LCO: Local Checksum Offload
include/linux/netdevice.h +3 -0
@@ -3897,6 +3897,9 @@ void netdev_rss_key_fill(void *buffer, size_t len);int dev_get_nest_level (struct net_device *dev);int skb_checksum_help (struct sk_buff *skb);int skb_crc32c_csum_help (struct sk_buff *skb); +int skb_csum_hwoffload_help (struct sk_buff *skb, +const netdev_features_t features); +struct sk_buff *__skb_gso_segment (struct sk_buff *skb,netdev_features_t features,bool tx_path); struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
include/linux/skbuff.h +5 -8
@@ -162,14 +162,11 @@* * NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of * NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate -* checksum offload capability. If a device has limited checksum capabilities -* (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as -* described above) a helper function can be called to resolve -* CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper -* function takes a spec argument that describes the protocol layer that is -* supported for checksum offload and can be called for each packet. If a -* packet does not match the specification for offload, skb_checksum_help -* is called to resolve the checksum. +* checksum offload capability. +* skb_csum_hwoffload_help() can be called to resolve CHECKSUM_PARTIAL based +* on network device checksumming capabilities: if a packet does not match +* them, skb_checksum_help or skb_crc32c_help (depending on the value of +* csum_not_inet, see item D.) is called to resolve the checksum. * * CHECKSUM_NONE: *
net/core/dev.c +12 -2
@@ -2989,6 +2989,17 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,return skb; } +int skb_csum_hwoffload_help (struct sk_buff *skb, +const netdev_features_t features) +{ +if (unlikely (skb->csum_not_inet)) +return !!(features &NETIF_F_SCTP_CRC ) ?0 : +skb_crc32c_csum_help (skb); + +return !!(features &NETIF_F_CSUM_MASK ) ?0 :skb_checksum_help (skb); +} +EXPORT_SYMBOL (skb_csum_hwoffload_help); +static struct sk_buff *validate_xmit_skb (struct sk_buff *skb,struct net_device *dev) {netdev_features_t features;
@@ -3024,8 +3035,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_deviceelse skb_set_transport_header (skb,skb_checksum_start_offset (skb)); -if (!(features &NETIF_F_CSUM_MASK ) && -skb_checksum_help (skb)) +if (skb_csum_hwoffload_help (skb, features)) goto out_kfree_skb; } }
Signature · 1 line
2.7.4
RFC PATCH v4 6/7 openvswitch: more accurate checksumming in queue_userspace_packet()
In reply to Tom Herbertif skb carries an SCTP packet and ip_summed is CHECKSUM_PARTIAL, it needs CRC32c in place of Internet Checksum: use skb_csum_hwoffload_help to avoid corrupting such packets while queueing them towards userspace.
--- net/openvswitch/datapath.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
net/openvswitch/datapath.c +1 -1
@@ -453,7 +453,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,/* Complete checksum if needed */ if (skb->ip_summed =CHECKSUM_PARTIAL && - (err =skb_checksum_help (skb))) + (err =skb_csum_hwoffload_help (skb,0 ))) goto out;/* Older versions of OVS user space enforce alignment of the last
Signature · 1 line
2.7.4
RFC PATCH v4 7/7 sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}
In reply to Tom HerbertAdd FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP and FCoE protocols.
--- include/linux/skbuff.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
include/linux/skbuff.h +5 -2
@@ -109,6 +109,7 @@* may perform further validation in this case. * GRE: only if the checksum is present in the header. * SCTP: indicates the CRC in SCTP header has been validated. +* FCOE: indicates the CRC in FC frame has been validated. * * skb->csum_level indicates the number of consecutive checksums found in * the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -126,8 +127,10 @@* packet as seen by netif_rx() and fills out in skb->csum. Meaning, the * hardware doesn't need to parse L3/L4 headers to implement this. * -* Note: Even if device supports only some protocols, but is able to produce -* skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY. +* Notes: +* - Even if device supports only some protocols, but is able to produce +* skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY. +* - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols. * * CHECKSUM_PARTIAL: *
Signature · 1 line
2.7.4
Re: [PATCH RFC net-next v4 7/7] sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}
Quoted 36 lines · Davide Caratti
Add FCoE to the list of protocols that can set
CHECKSUM_UNNECESSARY; add a note toCHECKSUM_COMPLETEsection to specify that it does not apply to SCTP and FCoE protocols.Suggested-by Tom Herbert <[email protected]>Signed-off-by Davide Caratti <[email protected]>--- include/linux/skbuff.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)include/linux/skbuff.h +5
-3@@ -109,6 +109,7 @@* may perform further validation in this case. * GRE: only if the checksum is present in the header. * SCTP: indicates the CRC in SCTP header has been validated. +* FCOE: indicates the CRC in FC frame has been validated. * * skb->csum_level indicates the number of consecutive checksums found in * the packet minus one that have been verified as CHECKSUM_UNNECESSARY. @@ -126,8 +127,10 @@* packet as seen by netif_rx() and fills out in skb->csum. Meaning, the * hardware doesn't need to parse L3/L4 headers to implement this. * -* Note: Even if device supports only some protocols, but is able to produce -* skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY. +* Notes: +* - Even if device supports only some protocols, but is able to produce +* skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY. +* - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols. * * CHECKSUM_PARTIAL: * --
Quoted 2 lines
2.7.4
RFC PATCH v3 5/7 net: more accurate checksumming in validate_xmit_skb()
In reply to Tom Herbertskb_csum_hwoffload_help() uses netdev features and skb->csum_algo to determine if skb needs software computation of Internet Checksum or crc32c (or nothing, if this computation can be done by the hardware). Use it in place of skb_checksum_help() in validate_xmit_skb() to avoid corruption of non-GSO SCTP packets having skb->ip_summed equal to CHECKSUM_PARTIAL.
While at it, remove references to skb_csum_off_chk* functions, since they are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').
--- Documentation/networking/checksum-offloads.txt | 12 ++++++++---- include/linux/netdevice.h | 3 +++ include/linux/skbuff.h | 11 ++++------- net/core/dev.c | 14 ++++++++++++-- 4 files changed, 27 insertions(+), 13 deletions(-)
Documentation/networking/checksum-offloads.txt +8 -4
@@ -35,6 +35,10 @@ This interface only allows a single checksum to be offloaded. Where encapsulation is used, the packet may have multiple checksum fields in different header layers, and the rest will have to be handled by another mechanism such as LCO or RCO. +CRC can also be offloaded using this interface, by means of filling + skb->csum_start and skb->csum_offset as described above, and setting + skb->csum_algo to values different than INTERNET_CHECKSUM: see skbuff.h + comment (section 'D') for more details. No offloading of the IP header checksum is performed; it is always done in software. This is OK because when we build the IP header, we obviously have it in cache, so summing it isn't expensive. It's also rather short.
@@ -49,9 +53,9 @@ A driver declares its offload capabilities in netdev->hw_features; see and csum_offset given in the SKB; if it tries to deduce these itself in hardware (as some NICs do) the driver should check that the values in the SKB match those which the hardware will deduce, and if not, fall back to - checksumming in software instead (with skb_checksum_help or one of the - skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h). This - is a pain, but that's what you get when hardware tries to be clever. + checksumming in software instead (with skb_csum_hwoffload_help() or one of + the skb_checksum_help() / skb_crc32c_csum_help functions, as mentioned in + include/linux/skbuff.h). The stack should, for the most part, assume that checksum offload is supported by the underlying device. The only place that should check is
@@ -60,7 +64,7 @@ The stack should, for the most part, assume that checksum offload is may include other offloads besides TX Checksum Offload) and, if they are not supported or enabled on the device (determined by netdev->features), performs the corresponding offload in software. In the case of TX - Checksum Offload, that means calling skb_checksum_help(skb). + Checksum Offload, that means calling skb_csum_hwoffload_help(skb, features). LCO: Local Checksum Offload
include/linux/netdevice.h +3 -0
@@ -3898,6 +3898,9 @@ void netdev_rss_key_fill(void *buffer, size_t len);int dev_get_nest_level (struct net_device *dev);int skb_checksum_help (struct sk_buff *skb);int skb_crc32c_csum_help (struct sk_buff *skb); +int skb_csum_hwoffload_help (struct sk_buff *skb, +const netdev_features_t features); +struct sk_buff *__skb_gso_segment (struct sk_buff *skb,netdev_features_t features,bool tx_path); struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
include/linux/skbuff.h +4 -7
@@ -162,13 +162,10 @@* * NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of * NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate -* checksum offload capability. If a device has limited checksum capabilities -* (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as -* described above) a helper function can be called to resolve -* CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper -* function takes a spec argument that describes the protocol layer that is -* supported for checksum offload and can be called for each packet. If a -* packet does not match the specification for offload, skb_checksum_help +* checksum offload capability. +* skb_csum_hwoffload_help() can be called to resolve CHECKSUM_PARTIAL based +* on network device checksumming capabilities: if a packet does not match +* them, skb_checksum_help/skb_crc32c_help (based on csum_algo, see item D.) * is called to resolve the checksum. * * CHECKSUM_NONE:
net/core/dev.c +12 -2
@@ -2988,6 +2988,17 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,return skb; } +int skb_csum_hwoffload_help (struct sk_buff *skb, +const netdev_features_t features) +{ +if (skb->csum_algo =CRC32C_CHECKSUM ) +return !!(features &NETIF_F_SCTP_CRC ) ?0 : +skb_crc32c_csum_help (skb); + +return !!(features &NETIF_F_CSUM_MASK ) ?0 :skb_checksum_help (skb); +} +EXPORT_SYMBOL (skb_csum_hwoffload_help); +static struct sk_buff *validate_xmit_skb (struct sk_buff *skb,struct net_device *dev) {netdev_features_t features;
@@ -3023,8 +3034,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_deviceelse skb_set_transport_header (skb,skb_checksum_start_offset (skb)); -if (!(features &NETIF_F_CSUM_MASK ) && -skb_checksum_help (skb)) +if (skb_csum_hwoffload_help (skb, features)) goto out_kfree_skb; } }
Signature · 1 line
2.7.4
RFC PATCH v3 6/7 openvswitch: more accurate checksumming in queue_userspace_packet()
In reply to Tom Herbertif skb carries an SCTP packet and ip_summed is CHECKSUM_PARTIAL, it needs CRC32c in place of Internet Checksum: use skb_csum_hwoffload_help to avoid corrupting such packets while queueing them towards userspace.
--- net/openvswitch/datapath.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
net/openvswitch/datapath.c +1 -1
@@ -453,7 +453,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,/* Complete checksum if needed */ if (skb->ip_summed =CHECKSUM_PARTIAL && - (err =skb_checksum_help (skb))) + (err =skb_csum_hwoffload_help (skb,0 ))) goto out;/* Older versions of OVS user space enforce alignment of the last
Signature · 1 line
2.7.4
RFC PATCH v3 7/7 sk_buff.h: improve description of CHECKSUM_{COMPLETE,UNNECESSARY}
In reply to Tom HerbertAdd FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP and FCoE protocols.
--- include/linux/skbuff.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
include/linux/skbuff.h +5 -2
@@ -109,6 +109,7 @@* may perform further validation in this case. * GRE: only if the checksum is present in the header. * SCTP: indicates the CRC in SCTP header has been validated. +* FCOE: indicates the CRC in FC frame has been validated. * * skb->csum_level indicates the number of consecutive checksums found in * the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -126,8 +127,10 @@* packet as seen by netif_rx() and fills out in skb->csum. Meaning, the * hardware doesn't need to parse L3/L4 headers to implement this. * -* Note: Even if device supports only some protocols, but is able to produce -* skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY. +* Notes: +* - Even if device supports only some protocols, but is able to produce +* skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY. +* - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols. * * CHECKSUM_PARTIAL: *
Signature · 1 line
2.7.4
RFC PATCH v2 2/4 net: introduce skb_sctp_csum_help
In reply to Davide Carattiskb_sctp_csum_help is like skb_checksum_help, but it is designed for checksumming SCTP packets using crc32c (see RFC3309), provided that sctp.ko has been loaded before. In case sctp.ko is not loaded, invoking skb_sctp_csum_help on a skb results in the following printout:
sk_buff: attempt to compute crc32c without sctp.ko
--- include/linux/netdevice.h | 1 + include/linux/skbuff.h | 3 ++- net/core/dev.c | 40 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+), 1 deletion(-)
include/linux/netdevice.h +1 -0
@@ -3918,6 +3918,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);int dev_get_nest_level (struct net_device *dev);int skb_checksum_help (struct sk_buff *skb); +int skb_sctp_csum_help (struct sk_buff *skb);struct sk_buff *__skb_gso_segment (struct sk_buff *skb,netdev_features_t features,bool tx_path); struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
include/linux/skbuff.h +2 -1
@@ -192,7 +192,8 @@* accordingly. Note the there is no indication in the skbuff that the * CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports * both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers. +* is configured for a packet presumably by inspecting packet headers; in +* case, skb_sctp_csum_help is provided to compute CRC on SCTP packets. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack
net/core/dev.c +40 -0
@@ -140,6 +140,7 @@#include <linux/hrtimer.h> #include <linux/netfilter_ingress.h> #include <linux/crash_dump.h> +#include <linux/sctp.h> #include "net-sysfs.h"
@@ -2578,6 +2579,45 @@ int skb_checksum_help(struct sk_buff *skb) }EXPORT_SYMBOL (skb_checksum_help); +int skb_sctp_csum_help (struct sk_buff *skb) +{ +__le32 crc32c_csum; +int ret =0 , offset; + +if (skb->ip_summed !=CHECKSUM_PARTIAL ) + goto out; + +if (unlikely (skb_is_gso (skb))) + goto out; + +/* Before computing a checksum, we should make sure no frag could +* be modified by an external entity : checksum could be wrong. +*/ +if (unlikely (skb_has_shared_frag (skb))) { + ret =__skb_linearize (skb); +if (ret) + goto out; + } + + offset =skb_checksum_start_offset (skb); + crc32c_csum =cpu_to_le32 (~__skb_checksum (skb, offset, + skb->len - offset, ~(__u32 )0 , + sctp_csum_stub)); + offset += offsetof(struct sctphdr , checksum); +BUG_ON (offset >=skb_headlen (skb)); + +if (skb_cloned (skb) && + !skb_clone_writable (skb, offset +sizeof (__le32))) { + ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); +if (ret) + goto out; + } + *(__le32 *)(skb->data + offset) = crc32c_csum; + skb->ip_summed =CHECKSUM_NONE ; +out: +return ret; +} +__be16 skb_network_protocol (struct sk_buff *skb,int *depth) {__be16 type = skb->protocol;
Signature · 1 line
2.7.4
RFC PATCH v2 3/4 net: more accurate checksumming in validate_xmit_skb
In reply to Davide CarattiIntroduce skb->csum_not_inet to identify not-yet-checksummed SCTP packets. Use this bit in combination with netdev feature bit in validate_xmit_skb, to discriminate whether skb needs crc32c or 2-complement Internet Checksum (or none of the two, when the underlying device can do checksum offload).
--- include/linux/skbuff.h | 1 + net/core/dev.c | 14 ++++++++++++-- net/netfilter/ipvs/ip_vs_proto_sctp.c | 1 + net/netfilter/nf_nat_proto_sctp.c | 1 + net/sched/act_csum.c | 1 + net/sctp/output.c | 1 + 6 files changed, 17 insertions(+), 2 deletions(-)
include/linux/skbuff.h +1 -0
@@ -759,6 +759,7 @@ struct sk_buff { __u8 tc_redirected:1; __u8 tc_from_ingress:1;#endif + __u8 csum_not_inet:1;#ifdef CONFIG_NET_SCHED __u16 tc_index;/* traffic control index */
net/core/dev.c +12 -2
@@ -2614,6 +2614,7 @@ int skb_sctp_csum_help(struct sk_buff *skb) } *(__le32 *)(skb->data + offset) = crc32c_csum; skb->ip_summed =CHECKSUM_NONE ; + skb->csum_not_inet =0 ; out:return ret; }
@@ -2960,6 +2961,16 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,return skb; } +static int skb_csum_hwoffload_help (struct sk_buff *skb, +netdev_features_t features) +{ +if (unlikely (skb->csum_not_inet)) +return !(features &NETIF_F_SCTP_CRC ) ? +skb_sctp_csum_help (skb) :0 ; + +return !(features &NETIF_F_CSUM_MASK ) ?skb_checksum_help (skb) :0 ; +} +static struct sk_buff *validate_xmit_skb (struct sk_buff *skb,struct net_device *dev) {netdev_features_t features;
@@ -2995,8 +3006,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_deviceelse skb_set_transport_header (skb,skb_checksum_start_offset (skb)); -if (!(features &NETIF_F_CSUM_MASK ) && -skb_checksum_help (skb)) +if (skb_csum_hwoffload_help (skb, features)) goto out_kfree_skb; } }
net/netfilter/ipvs/ip_vs_proto_sctp.c +1 -0
@@ -81,6 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, unsigned int sctphoff) { sctph->checksum =sctp_compute_cksum (skb, sctphoff); + skb->csum_not_inet =0 ; skb->ip_summed =CHECKSUM_UNNECESSARY ; }
net/netfilter/nf_nat_proto_sctp.c +1 -0
@@ -49,6 +49,7 @@ sctp_manip_pkt(struct sk_buff *skb,if (skb->ip_summed !=CHECKSUM_PARTIAL ) { hdr->checksum =sctp_compute_cksum (skb, hdroff); + skb->csum_not_inet =0 ; skb->ip_summed =CHECKSUM_NONE ; }
net/sched/act_csum.c +1 -0
@@ -337,6 +337,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl, sctph->checksum =sctp_compute_cksum (skb,skb_network_offset (skb) + ihl); + skb->csum_not_inet =0 ; skb->ip_summed =CHECKSUM_NONE ;return 1 ;
net/sctp/output.c +1 -0
@@ -528,6 +528,7 @@ static int sctp_packet_pack(struct sctp_packet *packet, }else { chksum: head->ip_summed =CHECKSUM_PARTIAL ; + head->csum_not_inet =1 ; head->csum_start =skb_transport_header (head) - head->head; head->csum_offset = offsetof(struct sctphdr , checksum); }
Signature · 1 line
2.7.4
Re: [PATCH RFC net-next v2 3/4] net: more accurate checksumming in validate_xmit_skb
Quoted 20 lines · Davide Caratti
Introduce
skb->csum_not_inetto identify not-yet-checksummed SCTP packets. Use this bit in combination with netdev feature bit invalidate_xmit_skb, to discriminate whether skb needs crc32c or 2-complement Internet Checksum (or none of the two, when the underlying device can do checksum offload).Signed-off-by Davide Caratti <[email protected]>--- include/linux/skbuff.h | 1 + net/core/dev.c | 14 ++++++++++++-- net/netfilter/ipvs/ip_vs_proto_sctp.c | 1 + net/netfilter/nf_nat_proto_sctp.c | 1 + net/sched/act_csum.c | 1 + net/sctp/output.c | 1 + 6 files changed, 17 insertions(+), 2 deletions(-)include/linux/skbuff.h +0
-0
include/linux/skbuff.h struct sk_buff { · line 763
Quoted 5 lines
include/linux/skbuff.h +1
-0@@ -759,6 +759,7 @@ struct sk_buff { __u8 tc_redirected:1; __u8 tc_from_ingress:1;#endif + __u8 csum_not_inet:1;
Unfortunately this potentially pushes the skbuf flags over 32 bits if I count correctly. I suggest that you rename csum_bad to csum_not_inet. Looks like csum_bad is only set by a grand total of one driver and I don't believe that is enough to justify its existence. It's probably a good time to remove it.
Quoted 15 lines
include/linux/skbuff.h +0
-0#ifdef CONFIG_NET_SCHED __u16 tc_index;/* traffic control index */ net/core/dev.c +1
-0@@ -2614,6 +2614,7 @@ int skb_sctp_csum_help(struct sk_buff *skb) } *(__le32 *)(skb->data + offset) = crc32c_csum; skb->ip_summed =CHECKSUM_NONE ; + skb->csum_not_inet =0 ; out:return ret; }
net/core/dev.c static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb, · line 2970
Quoted 10 lines
net/core/dev.c +7
-0@@ -2960,6 +2961,16 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,return skb; } +static int skb_csum_hwoffload_help (struct sk_buff *skb, +netdev_features_t features) +{ +if (unlikely (skb->csum_not_inet)) +return !(features &NETIF_F_SCTP_CRC ) ? +skb_sctp_csum_help (skb) :0 ; +
Return value looks complex. Maybe we should just change skb_csum_*_help to return bool, true of checksum was handled false if not.
Quoted 67 lines
net/core/dev.c +4
-2+return !(features &NETIF_F_CSUM_MASK ) ?skb_checksum_help (skb) :0 ; +} +static struct sk_buff *validate_xmit_skb (struct sk_buff *skb,struct net_device *dev) {netdev_features_t features;@@ -2995,8 +3006,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_deviceelse skb_set_transport_header (skb,skb_checksum_start_offset (skb)); -if (!(features &NETIF_F_CSUM_MASK ) && -skb_checksum_help (skb)) +if (skb_csum_hwoffload_help (skb, features)) goto out_kfree_skb; } }net/netfilter/ipvs/ip_vs_proto_sctp.c +1
-0@@ -81,6 +81,7 @@ static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph, unsigned int sctphoff) { sctph->checksum =sctp_compute_cksum (skb, sctphoff); + skb->csum_not_inet =0 ; skb->ip_summed =CHECKSUM_UNNECESSARY ; }net/netfilter/nf_nat_proto_sctp.c +1
-0@@ -49,6 +49,7 @@ sctp_manip_pkt(struct sk_buff *skb,if (skb->ip_summed !=CHECKSUM_PARTIAL ) { hdr->checksum =sctp_compute_cksum (skb, hdroff); + skb->csum_not_inet =0 ; skb->ip_summed =CHECKSUM_NONE ; }net/sched/act_csum.c +1
-0@@ -337,6 +337,7 @@ static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl, sctph->checksum =sctp_compute_cksum (skb,skb_network_offset (skb) + ihl); + skb->csum_not_inet =0 ; skb->ip_summed =CHECKSUM_NONE ;return 1 ;net/sctp/output.c +1
-1@@ -528,6 +528,7 @@ static int sctp_packet_pack(struct sctp_packet *packet, }else { chksum: head->ip_summed =CHECKSUM_PARTIAL ; + head->csum_not_inet =1 ; head->csum_start =skb_transport_header (head) - head->head; head->csum_offset = offsetof(struct sctphdr , checksum); } --2.7.4
RFC PATCH v2 4/4 Documentation: update notes on checksum offloading
In reply to Davide CarattiAdd description of skb_sctp_csum_help in networking/checksum-offload.txt, and document its usage in combination with skb->csum_not_inet. While at it, remove reference to skb_csum_off_chk* functions, since they have been removed from Linux source tree since commit cf53b1da73bd ("Revert "net:
Add driver helper functions to determine checksum""), and add missing explaination of CHECKSUM_UNNECESSARY for FCOE protocol.
--- Documentation/networking/checksum-offloads.txt | 7 ++++--- include/linux/skbuff.h | 25 ++++++++++++------------- 2 files changed, 16 insertions(+), 16 deletions(-)
Documentation/networking/checksum-offloads.txt +4 -3
@@ -49,8 +49,8 @@ A driver declares its offload capabilities in netdev->hw_features; see and csum_offset given in the SKB; if it tries to deduce these itself in hardware (as some NICs do) the driver should check that the values in the SKB match those which the hardware will deduce, and if not, fall back to - checksumming in software instead (with skb_checksum_help or one of the - skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h). This + checksumming in software instead (with skb_checksum_help or + skb_sctp_csum_help functions as mentioned in include/linux/skbuff.h). This is a pain, but that's what you get when hardware tries to be clever. The stack should, for the most part, assume that checksum offload is
@@ -60,7 +60,8 @@ The stack should, for the most part, assume that checksum offload is may include other offloads besides TX Checksum Offload) and, if they are not supported or enabled on the device (determined by netdev->features), performs the corresponding offload in software. In the case of TX - Checksum Offload, that means calling skb_checksum_help(skb). + Checksum Offload, that means calling skb_sctp_csum_help(skb) for SCTP + packets, and skb_checksum_help(skb) for other packets. LCO: Local Checksum Offload
include/linux/skbuff.h +12 -13
@@ -108,6 +108,7 @@* may perform further validation in this case. * GRE: only if the checksum is present in the header. * SCTP: indicates the CRC in SCTP header has been validated. +* FCOE: indicates the CRC in FC frame has been validated. * * skb->csum_level indicates the number of consecutive checksums found in * the packet minus one that have been verified as CHECKSUM_UNNECESSARY.
@@ -161,14 +162,13 @@* * NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of * NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate -* checksum offload capability. If a device has limited checksum capabilities -* (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as -* described above) a helper function can be called to resolve -* CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper -* function takes a spec argument that describes the protocol layer that is -* supported for checksum offload and can be called for each packet. If a -* packet does not match the specification for offload, skb_checksum_help -* is called to resolve the checksum. +* checksum offload capability. If a device has limited checksum capabilities +* (for instance it can't perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as +* described above) a helper function (namely skb_csum_hwoffload_help) can +* be called to resolve CHECKSUM_PARTIAL. This function uses netdev_features_t +* to have the Internet Checksum computed by HW, in case any feature belonging +* to NETIF_F_CSUM_MASK is set, or by software using skb_checksum_help(). +* See also Section D. * * CHECKSUM_NONE: *
@@ -189,11 +189,10 @@* NETIF_F_SCTP_CRC - This feature indicates that a device is capable of * offloading the SCTP CRC in a packet. To perform this offload the stack * will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset -* accordingly. Note the there is no indication in the skbuff that the -* CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports -* both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers; in -* case, skb_sctp_csum_help is provided to compute CRC on SCTP packets. +* accordingly. skb->csum_not_inet is an indication in the skbuff that the +* CHECKSUM_PARTIAL refers to an SCTP checksum: a driver can use it to +* decide whether skb_checksum_help() or skb_sctp_csum_help() have to be +* called on a sk_buff having ip_summed set to CHECKSUM_PARTIAL. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack
Signature · 1 line
2.7.4
RFC PATCH 3/5 net: introduce skb_sctp_csum_help
In reply to Davide Carattiskb_sctp_csum_help is like skb_checksum_help, but it is designed for checksumming SCTP packets using crc32c (see RFC3309), provided that sctp.ko has been loaded before. In case sctp.ko is not loaded, invoking skb_sctp_csum_help() on a skb results in the following printout:
sk_buff: attempt to compute crc32c without sctp.ko
--- include/linux/netdevice.h | 1 + include/linux/skbuff.h | 3 ++- net/core/dev.c | 29 +++++++++++++++++++++++++++++ 3 files changed, 32 insertions(+), 1 deletion(-)
include/linux/netdevice.h +1 -0
@@ -3902,6 +3902,7 @@ void netdev_rss_key_fill(void *buffer, size_t len);int dev_get_nest_level (struct net_device *dev);int skb_checksum_help (struct sk_buff *skb); +int skb_sctp_csum_help (struct sk_buff *skb);struct sk_buff *__skb_gso_segment (struct sk_buff *skb,netdev_features_t features,bool tx_path); struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
include/linux/skbuff.h +2 -1
@@ -192,7 +192,8 @@* accordingly. Note the there is no indication in the skbuff that the * CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports * both IP checksum offload and SCTP CRC offload must verify which offload -* is configured for a packet presumably by inspecting packet headers. +* is configured for a packet presumably by inspecting packet headers; in +* case, skb_sctp_csum_help is provided to compute CRC on SCTP packets. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack
net/core/dev.c +29 -0
@@ -2554,6 +2554,29 @@ static int skb_rfc1624_csum(struct sk_buff *skb, int offset)return ret; } +/* compute 32-bit RFC3309 checksum and store it at skb->data + offset */ +static int skb_rfc3309_csum (struct sk_buff *skb,int offset) +{ +__le32 crc32c_csum; +int ret =0 ; + + crc32c_csum =cpu_to_le32 (~__skb_checksum (skb, offset, + skb->len - offset, ~(__u32 )0 , + sctp_csum_stub)); + offset += skb->csum_offset; +BUG_ON ((offset +sizeof (__le32)) >skb_headlen (skb)); + +if (skb_cloned (skb) && + !skb_clone_writable (skb, offset +sizeof (__le32))) { + ret =pskb_expand_head (skb,0 ,0 ,GFP_ATOMIC ); +if (ret) + goto out; + } + *(__le32 *)(skb->data + offset) = crc32c_csum; +out: +return ret; +} +/* Invalidate hardware checksum when packet is to be mangled, and * complete checksum manually on outgoing path. * @skb - buffer that needs checksum
@@ -2599,6 +2622,12 @@ int skb_checksum_help(struct sk_buff *skb) }EXPORT_SYMBOL (skb_checksum_help); +int skb_sctp_csum_help (struct sk_buff *skb) +{ +return __skb_checksum_help (skb, skb_rfc3309_csum); +} +EXPORT_SYMBOL (skb_sctp_csum_help); +__be16 skb_network_protocol (struct sk_buff *skb,int *depth) {__be16 type = skb->protocol;
Signature · 1 line
2.7.4
RFC PATCH 4/5 net: more accurate checksumming in validate_xmit_skb
In reply to Davide Carattiintroduce skb_csum_hwoffload_help and use it as a replacement for skb_checksum_help in validate_xmit_skb, to compute checksum using crc32c or 2-complement Internet Checksum (or leave the packet unchanged and let the NIC do the checksum), depending on netdev checksum offloading capabilities and on presence of IPPROTO_SCTP as protocol number in IPv4/IPv6 header.
--- net/core/dev.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 50 insertions(+), 2 deletions(-)
net/core/dev.c +50 -2
@@ -140,6 +140,7 @@#include <linux/hrtimer.h> #include <linux/netfilter_ingress.h> #include <linux/crash_dump.h> +#include <linux/sctp.h> #include "net-sysfs.h"
@@ -2960,6 +2961,54 @@ static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,return skb; } +static int skb_csum_hwoffload_help (struct sk_buff *skb, +netdev_features_t features) +{ +bool encap = skb->encapsulation; +unsigned int offset =0 ; +__be16 protocol; + +if (likely ((features & (NETIF_F_SCTP_CRC |NETIF_F_CSUM_MASK )) = + (NETIF_F_SCTP_CRC |NETIF_F_CSUM_MASK ))) +return 0 ; + +if (skb->csum_offset != offsetof(struct sctphdr , checksum)) + goto inet_csum; + +if (encap) { + protocol = skb->inner_protocol; +if (skb->inner_protocol_type =ENCAP_TYPE_IPPROTO ) +switch (protocol) { +case IPPROTO_IPV6 : + protocol =ntohs (ETH_P_IPV6 ); +break ; +case IPPROTO_IP : + protocol =ntohs (ETH_P_IP ); +break ; +default : + goto inet_csum; + } + }else { + protocol =vlan_get_protocol (skb); + } +switch (protocol) { +case ntohs (ETH_P_IP ): +if ((encap ?inner_ip_hdr (skb) :ip_hdr (skb))->protocol = +IPPROTO_SCTP ) + goto sctp_csum; +break ; +case ntohs (ETH_P_IPV6 ): +if (ipv6_find_hdr (skb, &offset,IPPROTO_SCTP ,NULL ,NULL ) = +IPPROTO_SCTP ) + goto sctp_csum; +break ; + } +inet_csum: +return !(features &NETIF_F_CSUM_MASK ) ?skb_checksum_help (skb) :0 ; +sctp_csum: +return !(features &NETIF_F_SCTP_CRC ) ?skb_sctp_csum_help (skb) :0 ; +} +static struct sk_buff *validate_xmit_skb (struct sk_buff *skb,struct net_device *dev) {netdev_features_t features;
@@ -2995,8 +3044,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_deviceelse skb_set_transport_header (skb,skb_checksum_start_offset (skb)); -if (!(features &NETIF_F_CSUM_MASK ) && -skb_checksum_help (skb)) +if (skb_csum_hwoffload_help (skb, features)) goto out_kfree_skb; } }
Signature · 1 line
2.7.4
RFC PATCH 5/5 Documentation: add description of skb_sctp_csum_help
In reply to Davide CarattiAdd description of skb_sctp_csum_help in networking/checksum-offload.txt; while at it, remove reference to skb_csum_off_chk* functions, since they are not present anymore in Linux since commit cf53b1da73bd ('Revert "net:
Add driver helper functions to determine checksum"').
--- Documentation/networking/checksum-offloads.txt | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
Documentation/networking/checksum-offloads.txt +5 -4
@@ -49,9 +49,9 @@ A driver declares its offload capabilities in netdev->hw_features; see and csum_offset given in the SKB; if it tries to deduce these itself in hardware (as some NICs do) the driver should check that the values in the SKB match those which the hardware will deduce, and if not, fall back to - checksumming in software instead (with skb_checksum_help or one of the - skb_csum_off_chk* functions as mentioned in include/linux/skbuff.h). This - is a pain, but that's what you get when hardware tries to be clever. + checksumming in software instead (with skb_checksum_help or + skb_sctp_csum_help functions as mentioned in include/linux/skbuff.h). + This is a pain, but that's what you get when hardware tries to be clever. The stack should, for the most part, assume that checksum offload is supported by the underlying device. The only place that should check is
@@ -60,7 +60,8 @@ The stack should, for the most part, assume that checksum offload is may include other offloads besides TX Checksum Offload) and, if they are not supported or enabled on the device (determined by netdev->features), performs the corresponding offload in software. In the case of TX - Checksum Offload, that means calling skb_checksum_help(skb). + Checksum Offload, that means calling skb_sctp_csum_help(skb) for SCTP + packets, and skb_checksum_help(skb) for other packets. LCO: Local Checksum Offload
Signature · 1 line
2.7.4