diff options
| author | Jay Vosburgh <fubar@us.ibm.com> | 2007-10-17 17:37:51 -0700 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-10-23 20:32:01 -0400 |
| commit | d0e81b7e2246a41d068ecaf15aac9de570816d63 (patch) | |
| tree | 27b1dac99c2ee47846bafab1a530cd6ffb2a0f03 /drivers | |
| parent | 6603a6f25e4bca922a7dfbf0bf03072d98850176 (diff) | |
| download | lwn-d0e81b7e2246a41d068ecaf15aac9de570816d63.tar.gz lwn-d0e81b7e2246a41d068ecaf15aac9de570816d63.zip | |
bonding: Acquire correct locks in alb for promisc change
Update ALB mode monitor to hold correct locks (RTNL and nothing
else) when calling dev_set_promiscuity.
Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/bonding/bond_alb.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c index 6db5d763f6b6..25b8dbf6cfd7 100644 --- a/drivers/net/bonding/bond_alb.c +++ b/drivers/net/bonding/bond_alb.c @@ -1455,16 +1455,16 @@ void bond_alb_monitor(struct work_struct *work) /* handle rlb stuff */ if (bond_info->rlb_enabled) { - /* the following code changes the promiscuity of the - * the curr_active_slave. It needs to be locked with a - * write lock to protect from other code that also - * sets the promiscuity. - */ - write_lock_bh(&bond->curr_slave_lock); - if (bond_info->primary_is_promisc && (++bond_info->rlb_promisc_timeout_counter >= RLB_PROMISC_TIMEOUT)) { + /* + * dev_set_promiscuity requires rtnl and + * nothing else. + */ + read_unlock(&bond->lock); + rtnl_lock(); + bond_info->rlb_promisc_timeout_counter = 0; /* If the primary was set to promiscuous mode @@ -1473,9 +1473,10 @@ void bond_alb_monitor(struct work_struct *work) */ dev_set_promiscuity(bond->curr_active_slave->dev, -1); bond_info->primary_is_promisc = 0; - } - write_unlock_bh(&bond->curr_slave_lock); + rtnl_unlock(); + read_lock(&bond->lock); + } if (bond_info->rlb_rebalance) { bond_info->rlb_rebalance = 0; |