On Sun, Sep 29, 2019 at 7:09 PM <xiangxia.m....@gmail.com> wrote:
>
> From: Tonghao Zhang <xiangxia.m....@gmail.com>
>
> The most case *index < ma->max, we add likely for performance.
>
> Signed-off-by: Tonghao Zhang <xiangxia.m....@gmail.com>
> ---
> net/openvswitch/flow_table.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
> index c8e79c1..c21fd52 100644
> --- a/net/openvswitch/flow_table.c
> +++ b/net/openvswitch/flow_table.c
> @@ -526,7 +526,7 @@ 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)) {
After changes from patch 5, ma->count is the limit for mask array. so
why not use ma->count here.
> mask = rcu_dereference_ovsl(ma->masks[*index]);
> if (mask) {
> flow = masked_flow_lookup(ti, key, mask, n_mask_hit);
> --
> 1.8.3.1
>
