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authorJay Vosburgh <fubar@us.ibm.com>2008-03-21 22:29:33 -0700
committerJeff Garzik <jeff@garzik.org>2008-03-25 23:15:38 -0400
commit2bf86b7aa8e74bf81a9872f7b610f49b610a4649 (patch)
tree243fab364159920c950e393194c0ba8421a15d05 /drivers/net
parent26c080bf8308449330037f91daa3ac0a7c41023e (diff)
bonding: Fix locking in 802.3ad mode
The 802.3ad state machine lock can be acquired in both softirq and not softirq context, but was not held at _bh to prevent a deadlock (which could occur if a LACPDU arrived and was processed while the lock was held). Corrected this, now hold the state machine lock at _bh to prevent deadlock. Bug reported by Todd Fleisher <todd@fleish.org>. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/bonding/bond_3ad.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index cb3c6faa788..d16e0e1d2b3 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -310,7 +310,7 @@ static inline int __check_agg_selection_timer(struct port *port)
*/
static inline void __get_rx_machine_lock(struct port *port)
{
- spin_lock(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
+ spin_lock_bh(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
}
/**
@@ -320,7 +320,7 @@ static inline void __get_rx_machine_lock(struct port *port)
*/
static inline void __release_rx_machine_lock(struct port *port)
{
- spin_unlock(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
+ spin_unlock_bh(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
}
/**