diff options
| author | Florian Westphal <fw@strlen.de> | 2015-04-01 22:36:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-06 22:04:08 +0200 |
| commit | cf1cab07a20abcfa17f0cf431d103471ebd7b33c (patch) | |
| tree | ace013085107a9f362166762532cb363ec7650c1 | |
| parent | 4c0a56b2ee7b3a3741339e943acd2692c146fcb1 (diff) | |
netfilter: bridge: really save frag_max_size between PRE and POST_ROUTING
commit 0b67c43ce36a9964f1d5e3f973ee19eefd3f9f8f upstream.
We also need to save/store in forward, else br_parse_ip_options call
will zero frag_max_size as well.
Fixes: 93fdd47e5 ('bridge: Save frag_max_size between PRE_ROUTING and POST_ROUTING')
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/bridge/br_netfilter.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c index 0ee453fad3de..f371cbff6d45 100644 --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -651,6 +651,13 @@ static int br_nf_forward_finish(struct sk_buff *skb) struct net_device *in; if (!IS_ARP(skb) && !IS_VLAN_ARP(skb)) { + int frag_max_size; + + if (skb->protocol == htons(ETH_P_IP)) { + frag_max_size = IPCB(skb)->frag_max_size; + BR_INPUT_SKB_CB(skb)->frag_max_size = frag_max_size; + } + in = nf_bridge->physindev; if (nf_bridge->mask & BRNF_PKT_TYPE) { skb->pkt_type = PACKET_OTHERHOST; @@ -710,8 +717,14 @@ static unsigned int br_nf_forward_ip(const struct nf_hook_ops *ops, nf_bridge->mask |= BRNF_PKT_TYPE; } - if (pf == NFPROTO_IPV4 && br_parse_ip_options(skb)) - return NF_DROP; + if (pf == NFPROTO_IPV4) { + int frag_max = BR_INPUT_SKB_CB(skb)->frag_max_size; + + if (br_parse_ip_options(skb)) + return NF_DROP; + + IPCB(skb)->frag_max_size = frag_max; + } /* The physdev module checks on this */ nf_bridge->mask |= BRNF_BRIDGED; |