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authorhummerbliss@gmail.com <hummerbliss@gmail.com>2009-04-20 19:12:35 +0400
committerPatrick McHardy <kaber@trash.net>2009-04-20 19:12:35 +0400
commitc197facc8ea08062f8f949aade6a33649ee06771 (patch)
treefe91cc539f7ebe89e66f432949c316fd5b3a496e /net/bridge
parenta0142733a7ef2f3476e63938b330026a08c53f37 (diff)
downloadlinux-c197facc8ea08062f8f949aade6a33649ee06771.tar.xz
netfilter: bridge: allow fragmentation of VLAN packets traversing a bridge
br_nf_dev_queue_xmit only checks for ETH_P_IP packets for fragmenting but not VLAN packets. This results in dropping of large VLAN packets. This can be observed when connection tracking is enabled. Connection tracking re-assembles fragmented packets, and these have to re-fragmented when transmitting out. Also, make sure only refragmented packets are defragmented as per suggestion from Patrick McHardy. Signed-off-by: Saikiran Madugula <hummerbliss@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_netfilter.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 3953ac4214c8..e4a418fcb35b 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -788,15 +788,23 @@ static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff *skb,
return NF_STOLEN;
}
+#if defined(CONFIG_NF_CONNTRACK_IPV4) || defined(CONFIG_NF_CONNTRACK_IPV4_MODULE)
static int br_nf_dev_queue_xmit(struct sk_buff *skb)
{
- if (skb->protocol == htons(ETH_P_IP) &&
+ if (skb->nfct != NULL &&
+ (skb->protocol == htons(ETH_P_IP) || IS_VLAN_IP(skb)) &&
skb->len > skb->dev->mtu &&
!skb_is_gso(skb))
return ip_fragment(skb, br_dev_queue_push_xmit);
else
return br_dev_queue_push_xmit(skb);
}
+#else
+static int br_nf_dev_queue_xmit(struct sk_buff *skb)
+{
+ return br_dev_queue_push_xmit(skb);
+}
+#endif
/* PF_BRIDGE/POST_ROUTING ********************************************/
static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff *skb,