On Fri, Jan 15, 2010 at 2:19 PM, Eric Dumazet [off-list ref] wrote:

Le 15/01/2010 03:22, Changli Gao a écrit :

quoted

On Fri, Jan 15, 2010 at 5:56 AM, Tom Herbert [off-list ref] wrote:

quoted

+
+       if (skb->rxhash)
+               goto got_hash; /* Skip hash computation on packet header */
+
+       switch (skb->protocol) {
+       case __constant_htons(ETH_P_IP):
+               if (!pskb_may_pull(skb, sizeof(*ip)))
+                       goto done;
+
+               ip = (struct iphdr *) skb->data;
+               ip_proto = ip->protocol;
+               addr1 = ip->saddr;
+               addr2 = ip->daddr;
+               ihl = ip->ihl;
+               break;
+       case __constant_htons(ETH_P_IPV6):
+               if (!pskb_may_pull(skb, sizeof(*ip6)))
+                       goto done;
+
+               ip6 = (struct ipv6hdr *) skb->data;
+               ip_proto = ip6->nexthdr;

This code can't work, when there are extra headers. ipv6_skip_exthdr()
can be used to get the l4 header.

Could you give exact code please ?

The code bellow is from my ifb-mq.patch
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
        case __constant_htons(ETH_P_IPV6):
process_ipv6:
                if (unlikely(!pskb_may_pull(skb, sizeof(struct ipv6hdr))))
                        goto process_other;
                addr1 = ipv6_hdr(skb)->saddr.s6_addr32[3];
                addr2 = ipv6_hdr(skb)->daddr.s6_addr32[3];
                ihl = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &ip_proto);
                if (unlikely(ihl < 0))
                        goto process_other_trans;
                break;
#endif


-- 
Regards，
Changli Gao(xiaosuo@gmail.com)
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