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[net-next,11/11] openvswitch: Use flow hash during flow lookup operation.

Message ID 1383378230-59624-12-git-send-email-jesse@nicira.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Jesse Gross Nov. 2, 2013, 7:43 a.m. UTC 
From: Pravin B Shelar <pshelar@nicira.com>

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 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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 @@  static struct sw_flow *masked_flow_lookup(struct table_instance *ti,
 	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;