diff options
| author |   Florian Westphal <fw@strlen.de> | 2015-03-18 20:55:31 +0100 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2015-03-22 19:45:55 +0100 |
| commit | 8d0451638ad3f7ccd5250c1dd90e06ad487b2703 (patch) | |
| tree | 22e8caef37b59bbc0600e2a7dea95a733d4f385e /net | |
| parent | netfilter: nf_tables: consolidate error path of nf_tables_newtable() (diff) | |
| download | linux-dev-8d0451638ad3f7ccd5250c1dd90e06ad487b2703.tar.xz linux-dev-8d0451638ad3f7ccd5250c1dd90e06ad487b2703.zip | |
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')
| -rw-r--r-- | net/bridge/br_netfilter.c | 12 | ||||
| -rw-r--r-- | net/ipv4/ip_output.c | 5 |
2 files changed, 13 insertions, 4 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); diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index a7aea2048a0d..90b49e88e84a 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -636,10 +636,7 @@ slow_path: left = skb->len - hlen; /* Space per frame */ ptr = hlen; /* Where to start from */ - /* for bridged IP traffic encapsulated inside f.e. a vlan header, - * we need to make room for the encapsulating header - */ - ll_rs = LL_RESERVED_SPACE_EXTRA(rt->dst.dev, nf_bridge_pad(skb)); + ll_rs = LL_RESERVED_SPACE(rt->dst.dev); /* * Fragment the datagram. |