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authorDavid Miller <davem@davemloft.net>2015-04-06 05:19:04 +0300
committerDavid S. Miller <davem@davemloft.net>2015-04-07 22:25:55 +0300
commit7026b1ddb6b8d4e6ee33dc2bd06c0ca8746fa7ab (patch)
tree3e11ed0f186ea6066a3f7efecb88d85bc732ee51 /net/ipv6/ndisc.c
parent1c984f8a5df085bcf35364a8a870bd4db4da4ed3 (diff)
downloadlinux-7026b1ddb6b8d4e6ee33dc2bd06c0ca8746fa7ab.tar.xz
netfilter: Pass socket pointer down through okfn().
On the output paths in particular, we have to sometimes deal with two socket contexts. First, and usually skb->sk, is the local socket that generated the frame. And second, is potentially the socket used to control a tunneling socket, such as one the encapsulates using UDP. We do not want to disassociate skb->sk when encapsulating in order to fix this, because that would break socket memory accounting. The most extreme case where this can cause huge problems is an AF_PACKET socket transmitting over a vxlan device. We hit code paths doing checks that assume they are dealing with an ipv4 socket, but are actually operating upon the AF_PACKET one. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ndisc.c')
-rw-r--r--net/ipv6/ndisc.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 71fde6cafb35..96f153c0846b 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -463,8 +463,9 @@ static void ndisc_send_skb(struct sk_buff *skb,
idev = __in6_dev_get(dst->dev);
IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
- err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL, dst->dev,
- dst_output);
+ err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, sk, skb,
+ NULL, dst->dev,
+ dst_output_sk);
if (!err) {
ICMP6MSGOUT_INC_STATS(net, idev, type);
ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);