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authornikolay@redhat.com <nikolay@redhat.com>2013-09-02 13:51:40 +0200
committerDavid S. Miller <davem@davemloft.net>2013-09-04 00:27:24 -0400
commitc509316b5b33664b08b2a40d09534e0bd3c6b648 (patch)
tree3769e355a452894b9eaa4694f0486670c8adde64 /drivers/net/bonding/bond_3ad.c
parentee8487c0e1aed52b534f9bf31d3934af4c50bf33 (diff)
downloadlinux-linaro-stable-c509316b5b33664b08b2a40d09534e0bd3c6b648.tar.gz
bonding: simplify bond_3ad_update_lacp_rate and use RTNL for sync
We can drop the use of bond->lock for mutual exclusion in bond_3ad_update_lacp_rate and use RTNL in the sysfs store function instead. This way we'll prevent races with mode change and interface up/down as well as simplify update_lacp_rate by removing the check for port->slave because it'll always be initialized (done while enslaving with RTNL). This change will also help in the future removal of reader bond->lock from bond_enslave. Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding/bond_3ad.c')
-rw-r--r--drivers/net/bonding/bond_3ad.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index 90102652c82a..0d8f427ade93 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -2514,17 +2514,13 @@ int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
*/
void bond_3ad_update_lacp_rate(struct bonding *bond)
{
- struct slave *slave;
struct port *port = NULL;
+ struct slave *slave;
int lacp_fast;
- write_lock_bh(&bond->lock);
lacp_fast = bond->params.lacp_fast;
-
bond_for_each_slave(bond, slave) {
port = &(SLAVE_AD_INFO(slave).port);
- if (port->slave == NULL)
- continue;
__get_state_machine_lock(port);
if (lacp_fast)
port->actor_oper_port_state |= AD_STATE_LACP_TIMEOUT;
@@ -2532,6 +2528,4 @@ void bond_3ad_update_lacp_rate(struct bonding *bond)
port->actor_oper_port_state &= ~AD_STATE_LACP_TIMEOUT;
__release_state_machine_lock(port);
}
-
- write_unlock_bh(&bond->lock);
}