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authorFlorian Westphal <fw@strlen.de>2015-03-18 20:55:31 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2015-03-22 19:45:55 +0100
commit8d0451638ad3f7ccd5250c1dd90e06ad487b2703 (patch)
tree22e8caef37b59bbc0600e2a7dea95a733d4f385e /net/bridge/br_netfilter.c
parentffdb210eb415501c289f6becafb54fe2f4535efa (diff)
netfilter: bridge: kill nf_bridge_pad
The br_netfilter frag output function calls skb_cow_head() so in case it needs a larger headroom to e.g. re-add a previously stripped PPPOE or VLAN header things will still work (at cost of reallocation). We can then move nf_bridge_encap_header_len to br_netfilter. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/bridge/br_netfilter.c')
-rw-r--r--net/bridge/br_netfilter.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index bd2d24d1ff21..f3884a1b942f 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -153,6 +153,18 @@ static inline struct nf_bridge_info *nf_bridge_unshare(struct sk_buff *skb)
return nf_bridge;
}
+static unsigned int nf_bridge_encap_header_len(const struct sk_buff *skb)
+{
+ switch (skb->protocol) {
+ case __cpu_to_be16(ETH_P_8021Q):
+ return VLAN_HLEN;
+ case __cpu_to_be16(ETH_P_PPP_SES):
+ return PPPOE_SES_HLEN;
+ default:
+ return 0;
+ }
+}
+
static inline void nf_bridge_push_encap_header(struct sk_buff *skb)
{
unsigned int len = nf_bridge_encap_header_len(skb);

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