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| author | hummerbliss@gmail.com <hummerbliss@gmail.com> | 2009-04-20 17:12:35 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2009-04-20 17:12:35 +0200 |
| commit | c197facc8ea08062f8f949aade6a33649ee06771 (patch) | |
| tree | fe91cc539f7ebe89e66f432949c316fd5b3a496e | |
| parent | a0142733a7ef2f3476e63938b330026a08c53f37 (diff) | |
| download | linux-stable-c197facc8ea08062f8f949aade6a33649ee06771.tar.gz linux-stable-c197facc8ea08062f8f949aade6a33649ee06771.tar.bz2 linux-stable-c197facc8ea08062f8f949aade6a33649ee06771.zip | |
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>
| -rw-r--r-- | net/bridge/br_netfilter.c | 10 |
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, |