diff options
| author | Timo Teräs <timo.teras@iki.fi> | 2010-11-03 04:41:38 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-11-15 10:44:04 -0800 |
| commit | cc9ff19da9bf76a2f70bcb80225a1c587c162e52 (patch) | |
| tree | 181efcd617a42a48fa94c51cfe9dc0e77b3b5775 /include/net | |
| parent | e1f2d8c2cc61d2b9472efe44e8a2b098336914b4 (diff) | |
xfrm: use gre key as flow upper protocol info
The GRE Key field is intended to be used for identifying an individual
traffic flow within a tunnel. It is useful to be able to have XFRM
policy selector matches to have different policies for different
GRE tunnels.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/flow.h | 2 | ||||
| -rw-r--r-- | include/net/xfrm.h | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/include/net/flow.h b/include/net/flow.h index 0ac3fb5e097..7196e6864b8 100644 --- a/include/net/flow.h +++ b/include/net/flow.h @@ -67,6 +67,7 @@ struct flowi { } dnports; __be32 spi; + __be32 gre_key; struct { __u8 type; @@ -78,6 +79,7 @@ struct flowi { #define fl_icmp_code uli_u.icmpt.code #define fl_ipsec_spi uli_u.spi #define fl_mh_type uli_u.mht.type +#define fl_gre_key uli_u.gre_key __u32 secid; /* used by xfrm; see secid.txt */ } __attribute__((__aligned__(BITS_PER_LONG/8))); diff --git a/include/net/xfrm.h b/include/net/xfrm.h index bcfb6b24b01..54b28322948 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -805,6 +805,9 @@ __be16 xfrm_flowi_sport(struct flowi *fl) case IPPROTO_MH: port = htons(fl->fl_mh_type); break; + case IPPROTO_GRE: + port = htonl(fl->fl_gre_key) >> 16; + break; default: port = 0; /*XXX*/ } @@ -826,6 +829,9 @@ __be16 xfrm_flowi_dport(struct flowi *fl) case IPPROTO_ICMPV6: port = htons(fl->fl_icmp_code); break; + case IPPROTO_GRE: + port = htonl(fl->fl_gre_key) & 0xffff; + break; default: port = 0; /*XXX*/ } |