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igb: Correctly get protocol information

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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 <mitch.a.williams@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Mitch Williams 2008-03-07 10:32:13 -08:00 committed by Jeff Garzik
parent 725e49c5da
commit 44b0cda375
1 changed files with 17 additions and 4 deletions
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21
drivers/net/igb/igb_main.c
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@ -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);