net: openvswitch: add likely in flow_lookup (0a3e0137) · Commits · 戴 / test

The most case *index < ma->max, and flow-mask is not NULL. We add un/likely for performance. Signed-off-by:

net/openvswitch/flow_table.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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);