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netfilter: nf_ct_reasm: fix conntrack reassembly expire code

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Commit b836c99fd6 (ipv6: unify conntrack reassembly expire
code with standard one) use the standard IPv6 reassembly
code(ip6_expire_frag_queue) to handle conntrack reassembly expire.

In ip6_expire_frag_queue, it invoke dev_get_by_index_rcu to get
which device received this expired packet.so we must save ifindex
when NF_conntrack get this packet.

With this patch applied, I can see ICMP Time Exceeded sent
from the receiver when the sender sent out 1/2 fragmented
IPv6 packet.

Signed-off-by: Haibo Xi <haibbo@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Haibo Xi 2012-12-06 23:42:17 +00:00 committed by Pablo Neira Ayuso
parent d7a769ff0e
commit 97cf00e93c
1 changed files with 4 additions and 1 deletions
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3
net/ipv6/netfilter/nf_conntrack_reasm.c
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@ -311,7 +311,10 @@ static int nf_ct_frag6_queue(struct frag_queue *fq, struct sk_buff *skb,
else
fq->q.fragments = skb;
if (skb->dev) {
fq->iif = skb->dev->ifindex;
skb->dev = NULL;
}
fq->q.stamp = skb->tstamp;
fq->q.meat += skb->len;
if (payload_len > fq->q.max_size)