diff options
| author |   Florian Westphal <fw@strlen.de> | 2015-07-23 16:21:30 +0200 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2015-07-30 13:37:42 +0200 |
| commit | 72b1e5e4cac72efa6b739b47e41f53e4520b4194 (patch) | |
| tree | bb0bc144905b1e5f83ffae53de5590f07283af9f /include/linux/skbuff.h | |
| parent | netfilter: nf_ct_sctp: minimal multihoming support (diff) | |
| download | linux-dev-72b1e5e4cac72efa6b739b47e41f53e4520b4194.tar.xz linux-dev-72b1e5e4cac72efa6b739b47e41f53e4520b4194.zip | |
netfilter: bridge: reduce nf_bridge_info to 32 bytes again
We can use union for most of the temporary cruft (original ipv4/ipv6
address, source mac, physoutdev) since they're used during different
stages of br netfilter traversal.
Also get rid of the last two ->mask users.
Shrinks struct from 48 to 32 on 64bit arch.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index d6cdd6e87d53..ac732e67a6c8 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -173,17 +173,24 @@ struct nf_bridge_info { BRNF_PROTO_8021Q, BRNF_PROTO_PPPOE } orig_proto:8; - bool pkt_otherhost; + u8 pkt_otherhost:1; + u8 in_prerouting:1; + u8 bridged_dnat:1; __u16 frag_max_size; - unsigned int mask; struct net_device *physindev; union { - struct net_device *physoutdev; - char neigh_header[8]; - }; - union { + /* prerouting: detect dnat in orig/reply direction */ __be32 ipv4_daddr; struct in6_addr ipv6_daddr; + + /* after prerouting + nat detected: store original source + * mac since neigh resolution overwrites it, only used while + * skb is out in neigh layer. + */ + char neigh_header[8]; + + /* always valid & non-NULL from FORWARD on, for physdev match */ + struct net_device *physoutdev; }; }; #endif |