2.6.x experimental net driver queue
Subsystems (3)
PATCH 1/1 2.6.x experimental net driver queue
This is the latest installment of "stuff I think should go into 2.6.1" ;-) or IOW, my patch queue.
The changelog was getting quite long, so I'm now omitting all but the new changes. The full changelog is in BK, and also will be posted on kernel.org in the same directory as its respective patch.
The new and interesting thing in today's patch is the e100 rewrite.
A bit of history. I have been really impressed with what Intel has done with the e100 driver. If anyone saw it in the days when e100 only reared its head in vendor kernels, it was pretty grotty, and had license problems to boot. The current guys working on e100 listened to feedback from the community, and over time improved e100's code and license to the point where it was acceptable for merging into the mainline kernel.
Well, even after all that work, it was a pretty darn big driver. It supported all the whiz bang hw-offload features. But as hardware does, you find out about various limits and errata that have crept into the field over time. Particularly, some of the hwaccel features don't work on some chips.
So we come full circle, with e100 version 3. I've received a lot of "this works where e100 and eepro100 don't" reports, so I'm anxious to see how it does in wide testing. To quote from the driver,
* VLAN offload support of tagging, stripping and filtering is not * supported, but driver will accommodate the extra 4-byte VLAN tag * for processing by upper layers. Tx/Rx Checksum offloading is not * supported. Tx Scatter/Gather is not supported. Jumbo Frames is * not supported.
*
* NAPI support is enabled with CONFIG_E100_NAPI.
*
* MagicPacket(tm) WoL support is enabled/disabled via ethtool.
In other words, the scales tip back in the direction of letting the net stack do a bit more of the work. And guess what? The newer, more simple driver not only seems a bit more stable, but sometimes faster, because it now scales upward with the performance of your system CPU.
If I may risk a tangent, this is another reason why I feel interest in TOE may be more trouble than it's worth. Forget security issues. Forget userland interface issues. The plain and simple fact is that CPUs keep getting faster, while that TOE card you bought last month does not.
Getting back on topic, I like the new e100. Yes, it's a rewrite from scratch. But darn, it's clean, and early reports seem to indicate it's more stable and faster, too. So why not?
Jeff
BK users:
bk pull bk://gkernel.bkbits.net/net-drivers-2.5-exp
Patch:
ftp://ftp.kernel.org/pub/linux/kernel/people/jgarzik/patchkits/2.6/2.6.0-test11-netdrvr-exp2.patch.bz2
This will update the following files:
Documentation/networking/8139too.txt | 438 --- drivers/net/68360enet.c | 951 ------ drivers/net/e100/LICENSE | 339 -- drivers/net/e100/Makefile | 8 drivers/net/e100/e100.h | 999 ------- drivers/net/e100/e100_config.c | 639 ---- drivers/net/e100/e100_config.h | 168 - drivers/net/e100/e100_eeprom.c | 565 ---- drivers/net/e100/e100_main.c | 4358 -------------------------------- drivers/net/e100/e100_phy.c | 1163 -------- drivers/net/e100/e100_phy.h | 158 - drivers/net/e100/e100_test.c | 500 --- drivers/net/e100/e100_ucode.h | 365 -- Documentation/SubmittingPatches | 4 Documentation/networking/netconsole.txt | 57 drivers/char/synclink.c | 43 drivers/net/3c501.c | 116 drivers/net/3c501.h | 1 drivers/net/3c503.c | 117 drivers/net/3c505.c | 128 drivers/net/3c507.c | 120 drivers/net/3c515.c | 328 +- drivers/net/3c523.c | 108 drivers/net/3c527.c | 682 ++--- drivers/net/3c527.h | 6 drivers/net/3c59x.c | 17 drivers/net/8139too.c | 405 +- drivers/net/82596.c | 83 drivers/net/Kconfig | 34 drivers/net/Makefile | 4 drivers/net/Space.c | 587 ++-- drivers/net/a2065.c | 21 drivers/net/ac3200.c | 91 drivers/net/amd8111e.c | 14 drivers/net/apne.c | 81 drivers/net/appletalk/ipddp.c | 62 drivers/net/appletalk/ltpc.c | 2 drivers/net/arcnet/arc-rimi.c | 131 drivers/net/arcnet/arcnet.c | 6 drivers/net/arcnet/com20020-isa.c | 84 drivers/net/arcnet/com20020-pci.c | 54 drivers/net/arcnet/com20020.c | 16 drivers/net/arcnet/com90io.c | 126 drivers/net/arcnet/com90xx.c | 238 - drivers/net/ariadne.c | 10 drivers/net/arm/am79c961a.c | 2 drivers/net/arm/ether00.c | 4 drivers/net/arm/ether1.c | 2 drivers/net/arm/ether3.c | 2 drivers/net/arm/etherh.c | 2 drivers/net/at1700.c | 166 - drivers/net/atari_bionet.c | 62 drivers/net/atari_pamsnet.c | 67 drivers/net/atarilance.c | 58 drivers/net/atp.c | 40 drivers/net/au1000_eth.c | 61 drivers/net/bagetlance.c | 77 drivers/net/cs89x0.c | 132 drivers/net/de600.c | 59 drivers/net/de600.h | 1 drivers/net/de620.c | 63 drivers/net/declance.c | 17 drivers/net/defxx.c | 2 drivers/net/depca.c | 20 drivers/net/dummy.c | 2 drivers/net/e100.c | 2299 ++++++++++++++++ drivers/net/e100/e100_config.c | 8 drivers/net/e100/e100_main.c | 41 drivers/net/e100/e100_phy.c | 14 drivers/net/e1000/e1000.h | 10 drivers/net/e1000/e1000_ethtool.c | 94 drivers/net/e1000/e1000_hw.c | 65 drivers/net/e1000/e1000_hw.h | 9 drivers/net/e1000/e1000_main.c | 143 - drivers/net/e1000/e1000_param.c | 45 drivers/net/e2100.c | 88 drivers/net/eepro.c | 256 - drivers/net/eepro100.c | 21 drivers/net/eexpress.c | 91 drivers/net/eql.c | 2 drivers/net/es3210.c | 87 drivers/net/eth16i.c | 119 drivers/net/ethertap.c | 3 drivers/net/ewrk3.c | 684 ++--- drivers/net/fc/iph5526.c | 3 drivers/net/fc/iph5526_scsi.h | 2 drivers/net/fmv18x.c | 111 drivers/net/gt96100eth.c | 49 drivers/net/hamradio/baycom_epp.c | 2 drivers/net/hamradio/bpqether.c | 2 drivers/net/hamradio/hdlcdrv.c | 2 drivers/net/hamradio/yam.c | 2 drivers/net/hp-plus.c | 84 drivers/net/hp.c | 84 drivers/net/hp100.c | 743 ++--- drivers/net/hplance.c | 85 drivers/net/hydra.c | 19 drivers/net/jazzsonic.c | 88 drivers/net/lance.c | 129 drivers/net/lasi_82596.c | 17 drivers/net/lne390.c | 88 drivers/net/mac8390.c | 103 drivers/net/mac89x0.c | 77 drivers/net/mace.c | 50 drivers/net/macmace.c | 30 drivers/net/macsonic.c | 103 drivers/net/meth.c | 83 drivers/net/mvme147.c | 64 drivers/net/natsemi.c | 39 drivers/net/ne.c | 83 drivers/net/ne2.c | 82 drivers/net/ne2k-pci.c | 3 drivers/net/ne2k_cbus.c | 107 drivers/net/ne2k_cbus.h | 2 drivers/net/ne3210.c | 18 drivers/net/netconsole.c | 120 drivers/net/ni5010.c | 184 - drivers/net/ni52.c | 118 drivers/net/ni65.c | 101 drivers/net/ns83820.c | 2 drivers/net/oaknet.c | 61 drivers/net/pci-skeleton.c | 2 drivers/net/pcmcia/3c574_cs.c | 25 drivers/net/pcmcia/3c589_cs.c | 24 drivers/net/pcmcia/axnet_cs.c | 17 drivers/net/pcmcia/com20020_cs.c | 47 drivers/net/pcmcia/fmvj18x_cs.c | 28 drivers/net/pcmcia/ibmtr_cs.c | 15 drivers/net/pcmcia/nmclan_cs.c | 24 drivers/net/pcmcia/pcnet_cs.c | 17 drivers/net/pcmcia/smc91c92_cs.c | 24 drivers/net/pcmcia/xirc2ps_cs.c | 7 drivers/net/pcnet32.c | 11 drivers/net/plip.c | 18 drivers/net/ppp_generic.c | 67 drivers/net/r8169.c | 448 ++- drivers/net/saa9730.c | 63 drivers/net/sb1250-mac.c | 49 drivers/net/seeq8005.c | 97 drivers/net/sgiseeq.c | 29 drivers/net/shaper.c | 11 drivers/net/sk_g16.c | 182 - drivers/net/sk_mca.c | 119 drivers/net/sk_mca.h | 3 drivers/net/skfp/skfddi.c | 32 drivers/net/smc-ultra.c | 107 drivers/net/smc-ultra32.c | 85 drivers/net/smc9194.c | 110 drivers/net/stnic.c | 42 drivers/net/sun3_82586.c | 81 drivers/net/sun3lance.c | 85 drivers/net/tc35815.c | 194 - drivers/net/tg3.c | 16 drivers/net/tlan.c | 11 drivers/net/tokenring/3c359.c | 4 drivers/net/tokenring/abyss.c | 2 drivers/net/tokenring/madgemc.c | 6 drivers/net/tokenring/proteon.c | 184 - drivers/net/tokenring/skisa.c | 182 - drivers/net/tokenring/smctr.c | 194 - drivers/net/tokenring/tmspci.c | 2 drivers/net/tulip/Kconfig | 20 drivers/net/tulip/de2104x.c | 2 drivers/net/tulip/dmfe.c | 2 drivers/net/tulip/interrupt.c | 417 ++- drivers/net/tulip/tulip.h | 18 drivers/net/tulip/tulip_core.c | 78 drivers/net/tulip/winbond-840.c | 2 drivers/net/tulip/xircom_tulip_cb.c | 3 drivers/net/tun.c | 18 drivers/net/wan/cosa.c | 37 drivers/net/wan/lmc/lmc_main.c | 375 -- drivers/net/wan/lmc/lmc_var.h | 15 drivers/net/wan/x25_asy.c | 2 drivers/net/wd.c | 89 drivers/net/wireless/arlan-main.c | 283 -- drivers/net/wireless/arlan.h | 6 drivers/net/wireless/atmel.c | 2 drivers/net/wireless/ray_cs.c | 17 drivers/net/wireless/strip.c | 2 drivers/net/wireless/wavelan.c | 251 - drivers/net/wireless/wavelan.p.h | 58 drivers/net/wireless/wavelan_cs.c | 113 drivers/net/wireless/wavelan_cs.p.h | 49 drivers/net/znet.c | 36 drivers/net/zorro8390.c | 19 drivers/s390/net/qeth.c | 18 drivers/usb/gadget/ether.c | 2 include/linux/arcdevice.h | 1 include/linux/com20020.h | 1 include/linux/netdevice.h | 18 include/linux/netpoll.h | 38 include/linux/pci_ids.h | 2 net/Kconfig | 20 net/core/Makefile | 1 net/core/dev.c | 39 net/core/netpoll.c | 646 ++++ net/wanrouter/wanmain.c | 2 198 files changed, 10465 insertions(+), 17186 deletions(-)
through these ChangeSets:
<[email protected]> (03/12/05 1.1505)
[netdrvr tlan] netpoll support
Hi Jeff,
Below is the pollcontroller patch for tlan network device driver. This patch can be applied over 2.6.0-test9-bk25-netdrvr-exp1.patch
<[email protected]> (03/12/05 1.1504)
[netdrvr smc-ultra] netpoll support
Hi Jeff,
Below is the pollcontroller patch for smc ultra net driver. This patch can be applied over 2.6.0-test9-bk25-netdrvr-exp1.patch
<[email protected]> (03/12/05 1.1503)
[netdrvr e100] complete rewrite of e100 driver
[... snip changes from previous net-drivers-2.5-exp patchkits ...]
new e100 (was Re: [BK PATCHES] 2.6.x experimental net driver queue)
Oh, since it wasn't very clear, this is largely the work of Scott Feldman at Intel. In addition to have been in public testing for a while, Scott says Intel Q/A beat up e100 v3 for a while, too.
Kudos Scott,
Jeff
PATCH 1/1 remove com20020-isa.c unused variables
In reply to Jeff GarzikHi Jeff,
your experimental net driver queue patch introduced the following compile warnings when compiling com20020-isa statically into the kernel:
<-- snip -->
...
CC drivers/net/arcnet/com20020-isa.odrivers/net/arcnet/com20020-isa.c: In function `com20020isa_setup':drivers/net/arcnet/com20020-isa.c:189: warning: unused variable lp' drivers/net/arcnet/com20020-isa.c:188: warning: unused variable dev'
...
<-- snip -->
The fix is trivial (the net driver queue patch removes all uses of these variables):
drivers/net/arcnet/com20020-isa.c renamed from drivers/net/arcnet/com20020-isa.c.old +0 -2
@@ -185,8 +185,6 @@#ifndef MODULE static int __init com20020isa_setup (char *s) { -struct net_device *dev; -struct arcnet_local *lp;int ints[8 ]; s =get_options (s,8 , ints);
cu
Adrian
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