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net: rps: use proto_ports_offset() to handle the AH message correctly

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The SPI isn't at the beginning of an AH message.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Changli Gao 2010-08-17 19:04:32 +00:00 committed by David S. Miller
parent e760702ed8
commit 12fcdefb36
1 changed files with 7 additions and 16 deletions
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23
net/core/dev.c
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@ -2266,7 +2266,7 @@ static inline void ____napi_schedule(struct softnet_data *sd,
*/
__u32 __skb_get_rxhash(struct sk_buff *skb)
{
int nhoff, hash = 0;
int nhoff, hash = 0, poff;
struct ipv6hdr *ip6;
struct iphdr *ip;
u8 ip_proto;
@ -2306,24 +2306,15 @@ __u32 __skb_get_rxhash(struct sk_buff *skb)
goto done;
}
switch (ip_proto) {
case IPPROTO_TCP:
case IPPROTO_UDP:
case IPPROTO_DCCP:
case IPPROTO_ESP:
case IPPROTO_AH:
case IPPROTO_SCTP:
case IPPROTO_UDPLITE:
if (pskb_may_pull(skb, (ihl * 4) + 4 + nhoff)) {
ports.v32 = * (__force u32 *) (skb->data + nhoff +
(ihl * 4));
ports.v32 = 0;
poff = proto_ports_offset(ip_proto);
if (poff >= 0) {
nhoff += ihl * 4 + poff;
if (pskb_may_pull(skb, nhoff + 4)) {
ports.v32 = * (__force u32 *) (skb->data + nhoff);
if (ports.v16[1] < ports.v16[0])
swap(ports.v16[0], ports.v16[1]);
break;
}
default:
ports.v32 = 0;
break;
}
/* get a consistent hash (same value on both flow directions) */