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bonding: 3ad: use curr_slave_lock instead of bond->lock

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In 3ad mode the only syncing needed by bond->lock is for the wq
and the recv handler, so change them to use curr_slave_lock.
There're no locking dependencies here as 3ad doesn't use
curr_slave_lock at all.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2014-09-09 23:16:58 +02:00 committed by David S. Miller
parent 51752afa73
commit bdbc5f1303
2 changed files with 11 additions and 10 deletions
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9
drivers/net/bonding/bond_3ad.c
View File

@ -2057,7 +2057,7 @@ void bond_3ad_state_machine_handler(struct work_struct *work)
struct port *port;
bool should_notify_rtnl = BOND_SLAVE_NOTIFY_LATER;
read_lock(&bond->lock);
read_lock(&bond->curr_slave_lock);
rcu_read_lock();
/* check if there are any slaves */
@ -2120,7 +2120,7 @@ re_arm:
}
}
rcu_read_unlock();
read_unlock(&bond->lock);
read_unlock(&bond->curr_slave_lock);
if (should_notify_rtnl && rtnl_trylock()) {
bond_slave_state_notify(bond);
@ -2395,7 +2395,6 @@ int __bond_3ad_get_active_agg_info(struct bonding *bond,
return 0;
}
/* Wrapper used to hold bond->lock so no slave manipulation can occur */
int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info)
{
int ret;
@ -2487,9 +2486,9 @@ int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
if (!lacpdu)
return ret;
read_lock(&bond->lock);
read_lock(&bond->curr_slave_lock);
ret = bond_3ad_rx_indication(lacpdu, slave, skb->len);
read_unlock(&bond->lock);
read_unlock(&bond->curr_slave_lock);
return ret;
}

12
drivers/net/bonding/bond_main.c
View File

@ -1687,13 +1687,15 @@ static int __bond_release_one(struct net_device *bond_dev,
* for this slave anymore.
*/
netdev_rx_handler_unregister(slave_dev);
write_lock_bh(&bond->lock);
/* Inform AD package of unbinding of slave. */
if (BOND_MODE(bond) == BOND_MODE_8023AD)
if (BOND_MODE(bond) == BOND_MODE_8023AD) {
/* Sync against bond_3ad_rx_indication and
* bond_3ad_state_machine_handler
*/
write_lock_bh(&bond->curr_slave_lock);
bond_3ad_unbind_slave(slave);
write_unlock_bh(&bond->lock);
write_unlock_bh(&bond->curr_slave_lock);
}
netdev_info(bond_dev, "Releasing %s interface %s\n",
bond_is_active_slave(slave) ? "active" : "backup",