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xfrm: use gre key as flow upper protocol info

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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>
This commit is contained in:
Timo Teräs
2010-11-03 04:41:38 +00:00
committed by David S. Miller
parent e1f2d8c2cc
commit cc9ff19da9
4 changed files with 30 additions and 5 deletions
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12
net/ipv4/ip_gre.c
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@@ -779,9 +779,9 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
.tos = RT_TOS(tos)
}
},
.proto = IPPROTO_GRE
}
;
.proto = IPPROTO_GRE,
.fl_gre_key = tunnel->parms.o_key
};
if (ip_route_output_key(dev_net(dev), &rt, &fl)) {
dev->stats.tx_carrier_errors++;
goto tx_error;
@@ -958,7 +958,8 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev)
.tos = RT_TOS(iph->tos)
}
},
.proto = IPPROTO_GRE
.proto = IPPROTO_GRE,
.fl_gre_key = tunnel->parms.o_key
};
struct rtable *rt;
@@ -1223,7 +1224,8 @@ static int ipgre_open(struct net_device *dev)
.tos = RT_TOS(t->parms.iph.tos)
}
},
.proto = IPPROTO_GRE
.proto = IPPROTO_GRE,
.fl_gre_key = t->parms.o_key
};
struct rtable *rt;