bonding: slight optimizztion for bond_slave_override()

When the skb is xmit by the function bond_slave_override(),
it will have duplicate judgement for slave state, and I think it
will consumes a little performance, maybe it is negligible,
so I simplify the function and remove the unwanted judgement.

Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 06f3a9f..9efccef 100644 (file)
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3673,28 +3673,24 @@ static inline int bond_slave_override(struct bonding *bond,
                                      struct sk_buff *skb)
 {
        struct slave *slave = NULL;
-       struct slave *check_slave;
        struct list_head *iter;
-       int res = 1;
 
        if (!skb->queue_mapping)
                return 1;
 
        /* Find out if any slaves have the same mapping as this skb. */
-       bond_for_each_slave_rcu(bond, check_slave, iter) {
-               if (check_slave->queue_id == skb->queue_mapping) {
-                       slave = check_slave;
+       bond_for_each_slave_rcu(bond, slave, iter) {
+               if (slave->queue_id == skb->queue_mapping) {
+                       if (slave_can_tx(slave)) {
+                               bond_dev_queue_xmit(bond, skb, slave->dev);
+                               return 0;
+                       }
+                       /* If the slave isn't UP, use default transmit policy. */
                        break;
                }
        }
 
-       /* If the slave isn't UP, use default transmit policy. */
-       if (slave && slave->queue_id && IS_UP(slave->dev) &&
-           (slave->link == BOND_LINK_UP)) {
-               res = bond_dev_queue_xmit(bond, skb, slave->dev);
-       }
-
-       return res;
+       return 1;
 }