AcoSail/kernel_optimize_test
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bonding: slight optimizztion for bond_slave_override()

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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>
This commit is contained in:
dingtianhong 2014-01-02 09:13:06 +08:00 committed by David S. Miller
parent 4d4ac1b092
commit 3900f29021
1 changed files with 8 additions and 12 deletions
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20
drivers/net/bonding/bond_main.c
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@ -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;
}