fib: Add fib rule match on tunnel id
This add the ability to select a routing table based on the tunnel
id which allows to maintain separate routing tables for each virtual
tunnel network.
ip rule add from all tunnel-id 100 lookup 100
ip rule add from all tunnel-id 200 lookup 200
A new static key controls the collection of metadata at tunnel level
upon demand.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index 903a55e..4e8f804 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -19,6 +19,7 @@
u8 action;
/* 3 bytes hole, try to use */
u32 target;
+ __be64 tun_id;
struct fib_rule __rcu *ctarget;
struct net *fr_net;
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index 0b7e18c..0a5a776 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -303,6 +303,17 @@
return (struct ip_tunnel_info *)lwtstate->data;
}
+extern struct static_key ip_tunnel_metadata_cnt;
+
+/* Returns > 0 if metadata should be collected */
+static inline int ip_tunnel_collect_metadata(void)
+{
+ return static_key_false(&ip_tunnel_metadata_cnt);
+}
+
+void ip_tunnel_need_metadata(void);
+void ip_tunnel_unneed_metadata(void);
+
#endif /* CONFIG_INET */
#endif /* __NET_IP_TUNNELS_H */