Skip to contentSkip to conversation

igb: Correctly get protocol information

PATCH Applied Auke Kok 2 participants 2 messages Mar 7, 2008 – Mar 17, 2008

Subsystems (2)
Networking Network drivers
lore
Share & tools
lore

Auke Kok

author
#0 lore raw

PATCH 1/1 igb: Correctly get protocol information

From: Mitch Williams <[email protected]>

We can't look at the socket to get protocol information. We should instead look directly at the packet, and hope there are no IPv6 option headers.

Signed-off-by Mitch Williams <[email protected]>
Signed-off-by Auke Kok <[email protected]>

---

 drivers/net/igb/igb_main.c |   21 +++++++++++++++++----
 1 files changed, 17 insertions(+), 4 deletions(-)
drivers/net/igb/igb_main.c +17 -4
index 6a1f230..928ce82 100644
@@ -31,7 +31,6 @@
 #include <linux/vmalloc.h>
 #include <linux/pagemap.h>
 #include <linux/netdevice.h>
-#include <linux/tcp.h>
 #include <linux/ipv6.h>
 #include <net/checksum.h>
 #include <net/ip6_checksum.h>

@@ -2484,10 +2483,24 @@ static inline bool igb_tx_csum_adv(struct igb_adapter *adapter,
 		tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
 
 		if (skb->ip_summed == CHECKSUM_PARTIAL) {
-			if (skb->protocol == htons(ETH_P_IP))
+			switch (skb->protocol) {
+			case __constant_htons(ETH_P_IP):
 				tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
-			if (skb->sk && (skb->sk->sk_protocol == IPPROTO_TCP))
-				tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+				if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+					tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+				break;
+			case __constant_htons(ETH_P_IPV6):
+				/* XXX what about other V6 headers?? */
+				if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
+					tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+				break;
+			default:
+				if (unlikely(net_ratelimit()))
+					dev_warn(&adapter->pdev->dev,
+					    "partial checksum but proto=%x!\n",
+					    skb->protocol);
+				break;
+			}
 		}
 
 		context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/