diff options
| author | Patrick McHardy <kaber@trash.net> | 2006-03-20 19:23:05 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-03-20 19:23:05 -0800 |
| commit | a193a4abdd1f742a57f3f70b6a83c3e536876e97 (patch) | |
| tree | 1b77f9f388ae153815248e8ef30b0297943c7016 /net | |
| parent | 6ffd30fbbb1b4a01a9f56049521693375a864d3e (diff) | |
| download | linux-a193a4abdd1f742a57f3f70b6a83c3e536876e97.tar.gz | |
[NETFILTER]: Fix skb->nf_bridge lifetime issues
The bridge netfilter code simulates the NF_IP_PRE_ROUTING hook and skips
the real hook by registering with high priority and returning NF_STOP if
skb->nf_bridge is present and the BRNF_NF_BRIDGE_PREROUTING flag is not
set. The flag is only set during the simulated hook.
Because skb->nf_bridge is only freed when the packet is destroyed, the
packet will not only skip the first invocation of NF_IP_PRE_ROUTING, but
in the case of tunnel devices on top of the bridge also all further ones.
Forwarded packets from a bridge encapsulated by a tunnel device and sent
as locally outgoing packet will also still have the incorrect bridge
information from the input path attached.
We already have nf_reset calls on all RX/TX paths of tunnel devices,
so simply reset the nf_bridge field there too. As an added bonus,
the bridge information for locally delivered packets is now also freed
when the packet is queued to a socket.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/netfilter/ipt_REJECT.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c index 26ea6c19f5bd2..9d3b3579f27ca 100644 --- a/net/ipv4/netfilter/ipt_REJECT.c +++ b/net/ipv4/netfilter/ipt_REJECT.c @@ -154,10 +154,6 @@ static void send_reset(struct sk_buff *oldskb, int hook) /* This packet will not be the same as the other: clear nf fields */ nf_reset(nskb); nskb->nfmark = 0; -#ifdef CONFIG_BRIDGE_NETFILTER - nf_bridge_put(nskb->nf_bridge); - nskb->nf_bridge = NULL; -#endif tcph = (struct tcphdr *)((u_int32_t*)nskb->nh.iph + nskb->nh.iph->ihl); |