tcp: replace ehash_size by ehash_mask

Storing the mask (size - 1) instead of the size allows fast path to be
a bit faster.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 625cc5f64c94..a45aaf3d48b1 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -209,7 +209,7 @@ struct sock * __inet_lookup_established(struct net *net,
          * have wildcards anyways.
          */
         unsigned int hash = inet_ehashfn(net, daddr, hnum, saddr, sport);
-        unsigned int slot = hash & (hashinfo->ehash_size - 1);
+        unsigned int slot = hash & hashinfo->ehash_mask;
         struct inet_ehash_bucket *head = &hashinfo->ehash[slot];
 
         rcu_read_lock();