aboutsummaryrefslogtreecommitdiff
path: root/net/ipv6/ip6_input.c
diff options
context:
space:
mode:
authorDavid Miller <davem@davemloft.net>2015-04-05 22:19:04 -0400
committerDavid S. Miller <davem@davemloft.net>2015-04-07 15:25:55 -0400
commit7026b1ddb6b8d4e6ee33dc2bd06c0ca8746fa7ab (patch)
tree3e11ed0f186ea6066a3f7efecb88d85bc732ee51 /net/ipv6/ip6_input.c
parent1c984f8a5df085bcf35364a8a870bd4db4da4ed3 (diff)
downloadlinux-stericsson-7026b1ddb6b8d4e6ee33dc2bd06c0ca8746fa7ab.tar.gz
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/ip6_input.c')
-rw-r--r--net/ipv6/ip6_input.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index fb97f7f8d4ed..f2e464eba5ef 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -46,8 +46,7 @@
#include <net/xfrm.h>
#include <net/inet_ecn.h>
-
-int ip6_rcv_finish(struct sk_buff *skb)
+int ip6_rcv_finish(struct sock *sk, struct sk_buff *skb)
{
if (sysctl_ip_early_demux && !skb_dst(skb) && skb->sk == NULL) {
const struct inet6_protocol *ipprot;
@@ -183,7 +182,8 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
/* Must drop socket now because of tproxy. */
skb_orphan(skb);
- return NF_HOOK(NFPROTO_IPV6, NF_INET_PRE_ROUTING, skb, dev, NULL,
+ return NF_HOOK(NFPROTO_IPV6, NF_INET_PRE_ROUTING, NULL, skb,
+ dev, NULL,
ip6_rcv_finish);
err:
IP6_INC_STATS_BH(net, idev, IPSTATS_MIB_INHDRERRORS);
@@ -198,7 +198,7 @@ drop:
*/
-static int ip6_input_finish(struct sk_buff *skb)
+static int ip6_input_finish(struct sock *sk, struct sk_buff *skb)
{
struct net *net = dev_net(skb_dst(skb)->dev);
const struct inet6_protocol *ipprot;
@@ -277,7 +277,8 @@ discard:
int ip6_input(struct sk_buff *skb)
{
- return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_IN, skb, skb->dev, NULL,
+ return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_IN, NULL, skb,
+ skb->dev, NULL,
ip6_input_finish);
}