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ipv4: Pass struct net into ip_defrag and ip_check_defrag

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The function ip_defrag is called on both the input and the output
paths of the networking stack.  In particular conntrack when it is
tracking outbound packets from the local machine calls ip_defrag.

So add a struct net parameter and stop making ip_defrag guess which
network namespace it needs to defragment packets in.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2015-10-09 13:44:54 -05:00 • committed by David S. Miller
parent 37fcbab61b
commit 19bcf9f203
8 changed files with 20 additions and 19 deletions
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7
net/ipv4/ip_input.c
View file

@ -170,7 +170,7 @@ bool ip_call_ra_chain(struct sk_buff *skb)
sk->sk_bound_dev_if == dev->ifindex) &&
net_eq(sock_net(sk), net)) {
if (ip_is_fragment(ip_hdr(skb))) {
if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN))
if (ip_defrag(net, skb, IP_DEFRAG_CALL_RA_CHAIN))
return true;
}
if (last) {
@ -247,14 +247,15 @@ int ip_local_deliver(struct sk_buff *skb)
/*
* Reassemble IP fragments.
*/
struct net *net = dev_net(skb->dev);
if (ip_is_fragment(ip_hdr(skb))) {
if (ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER))
if (ip_defrag(net, skb, IP_DEFRAG_LOCAL_DELIVER))
return 0;
}
return NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_IN,
dev_net(skb->dev), NULL, skb, skb->dev, NULL,
net, NULL, skb, skb->dev, NULL,
ip_local_deliver_finish);
}