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authorTom Herbert <therbert@google.com>2014-01-02 11:48:26 -0800
committerDavid S. Miller <davem@davemloft.net>2014-01-03 19:38:45 -0500
commit7d442fab0a6777fd7612cfcada32ea859553d370 (patch)
tree3d5282fdd3007f33565e482e2dffbdd55dab7703 /include
parentf916ec9608af017dda3e0fa7b5c6a344fc05285e (diff)
ipv4: Cache dst in tunnels
Avoid doing a route lookup on every packet being tunneled. In ip_tunnel.c cache the route returned from ip_route_output if the tunnel is "connected" so that all the rouitng parameters are taken from tunnel parms for a packet. Specifically, not NBMA tunnel and tos is from tunnel parms (not inner packet). Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/ip_tunnels.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index 732f8c6ae975..bde50fc5b4f0 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -54,6 +54,9 @@ struct ip_tunnel {
int hlen; /* Precalculated header length */
int mlink;
+ struct dst_entry __rcu *dst_cache;
+ spinlock_t dst_lock;
+
struct ip_tunnel_parm parms;
/* for SIT */