From: Tonghao Zhang <xiangxia.m....@gmail.com>
The most case *index < ma->max, and flow-mask is not NULL.
We add un/likely for performance.
Signed-off-by: Tonghao Zhang <xiangxia.m....@gmail.com>
Tested-by: Greg Rose <gvrose8...@gmail.com>
Acked-by: William Tu <u9012...@gmail.com>
---
net/openvswitch/flow_table.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index 96757e2..9f5a06e 100644
--- a/net/openvswitch/flow_table.c
+++ b/net/openvswitch/flow_table.c
@@ -519,7 +519,7 @@ static struct sw_flow *flow_lookup(struct flow_table *tbl,
struct sw_flow_mask *mask;
int i;
- if (*index < ma->max) {
+ if (likely(*index < ma->max)) {
mask = rcu_dereference_ovsl(ma->masks[*index]);
if (mask) {
flow = masked_flow_lookup(ti, key, mask, n_mask_hit);
@@ -534,7 +534,7 @@ static struct sw_flow *flow_lookup(struct flow_table *tbl,
continue;
mask = rcu_dereference_ovsl(ma->masks[i]);
- if (!mask)
+ if (unlikely(!mask))
break;
flow = masked_flow_lookup(ti, key, mask, n_mask_hit);
--
1.8.3.1
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