commit 8ddd094675cfd453fc9838caa46ea108a4107183
author Pravin B Shelar <pshelar@nicira.com> Tue Oct 29 23:10:58 2013 -0700
committer Jesse Gross <jesse@nicira.com> Fri Nov 01 18:43:46 2013 -0700
tree 197ff564a74885ac227917a82c1e987454895878
parent 5eb26b156e29eadcc21f73fb5d14497f0db24b86

openvswitch: Use flow hash during flow lookup operation.

Flow->hash can be used to detect hash collisions and avoid flow key
compare in flow lookup.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>

net/openvswitch/flow_table.c

diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index 536b4d2..e425427 100644
--- a/net/openvswitch/flow_table.c
+++ b/net/openvswitch/flow_table.c
@@ -421,7 +421,7 @@
 	hash = flow_hash(&masked_key, key_start, key_end);
 	head = find_bucket(ti, hash);
 	hlist_for_each_entry_rcu(flow, head, hash_node[ti->node_ver]) {
-		if (flow->mask == mask &&
+		if (flow->mask == mask && flow->hash == hash &&
 		    flow_cmp_masked_key(flow, &masked_key,
 					  key_start, key_end))
 			return flow;