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path: root/drivers/net/bonding/bond_main.c
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Diffstat (limited to 'drivers/net/bonding/bond_main.c')
-rw-r--r--drivers/net/bonding/bond_main.c96
1 files changed, 52 insertions, 44 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index c5944f1a4f9d..c34cc1e7c6f6 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -773,9 +773,6 @@ static void bond_resend_igmp_join_requests(struct bonding *bond)
read_lock(&bond->lock);
- if (bond->kill_timers)
- goto out;
-
/* rejoin all groups on bond device */
__bond_resend_igmp_join_requests(bond->dev);
@@ -789,9 +786,9 @@ static void bond_resend_igmp_join_requests(struct bonding *bond)
__bond_resend_igmp_join_requests(vlan_dev);
}
- if ((--bond->igmp_retrans > 0) && !bond->kill_timers)
+ if (--bond->igmp_retrans > 0)
queue_delayed_work(bond->wq, &bond->mcast_work, HZ/5);
-out:
+
read_unlock(&bond->lock);
}
@@ -2517,10 +2514,11 @@ void bond_mii_monitor(struct work_struct *work)
struct bonding *bond = container_of(work, struct bonding,
mii_work.work);
bool should_notify_peers = false;
+ unsigned long delay;
read_lock(&bond->lock);
- if (bond->kill_timers)
- goto out;
+
+ delay = msecs_to_jiffies(bond->params.miimon);
if (bond->slave_cnt == 0)
goto re_arm;
@@ -2529,7 +2527,15 @@ void bond_mii_monitor(struct work_struct *work)
if (bond_miimon_inspect(bond)) {
read_unlock(&bond->lock);
- rtnl_lock();
+
+ /* Race avoidance with bond_close cancel of workqueue */
+ if (!rtnl_trylock()) {
+ read_lock(&bond->lock);
+ delay = 1;
+ should_notify_peers = false;
+ goto re_arm;
+ }
+
read_lock(&bond->lock);
bond_miimon_commit(bond);
@@ -2540,14 +2546,18 @@ void bond_mii_monitor(struct work_struct *work)
}
re_arm:
- if (bond->params.miimon && !bond->kill_timers)
- queue_delayed_work(bond->wq, &bond->mii_work,
- msecs_to_jiffies(bond->params.miimon));
-out:
+ if (bond->params.miimon)
+ queue_delayed_work(bond->wq, &bond->mii_work, delay);
+
read_unlock(&bond->lock);
if (should_notify_peers) {
- rtnl_lock();
+ if (!rtnl_trylock()) {
+ read_lock(&bond->lock);
+ bond->send_peer_notif++;
+ read_unlock(&bond->lock);
+ return;
+ }
netdev_bonding_change(bond->dev, NETDEV_NOTIFY_PEERS);
rtnl_unlock();
}
@@ -2789,9 +2799,6 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval);
- if (bond->kill_timers)
- goto out;
-
if (bond->slave_cnt == 0)
goto re_arm;
@@ -2888,9 +2895,9 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
}
re_arm:
- if (bond->params.arp_interval && !bond->kill_timers)
+ if (bond->params.arp_interval)
queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks);
-out:
+
read_unlock(&bond->lock);
}
@@ -3131,9 +3138,6 @@ void bond_activebackup_arp_mon(struct work_struct *work)
read_lock(&bond->lock);
- if (bond->kill_timers)
- goto out;
-
delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval);
if (bond->slave_cnt == 0)
@@ -3143,7 +3147,15 @@ void bond_activebackup_arp_mon(struct work_struct *work)
if (bond_ab_arp_inspect(bond, delta_in_ticks)) {
read_unlock(&bond->lock);
- rtnl_lock();
+
+ /* Race avoidance with bond_close flush of workqueue */
+ if (!rtnl_trylock()) {
+ read_lock(&bond->lock);
+ delta_in_ticks = 1;
+ should_notify_peers = false;
+ goto re_arm;
+ }
+
read_lock(&bond->lock);
bond_ab_arp_commit(bond, delta_in_ticks);
@@ -3156,13 +3168,18 @@ void bond_activebackup_arp_mon(struct work_struct *work)
bond_ab_arp_probe(bond);
re_arm:
- if (bond->params.arp_interval && !bond->kill_timers)
+ if (bond->params.arp_interval)
queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks);
-out:
+
read_unlock(&bond->lock);
if (should_notify_peers) {
- rtnl_lock();
+ if (!rtnl_trylock()) {
+ read_lock(&bond->lock);
+ bond->send_peer_notif++;
+ read_unlock(&bond->lock);
+ return;
+ }
netdev_bonding_change(bond->dev, NETDEV_NOTIFY_PEERS);
rtnl_unlock();
}
@@ -3424,8 +3441,6 @@ static int bond_open(struct net_device *bond_dev)
struct slave *slave;
int i;
- bond->kill_timers = 0;
-
/* reset slave->backup and slave->inactive */
read_lock(&bond->lock);
if (bond->slave_cnt > 0) {
@@ -3494,33 +3509,30 @@ static int bond_close(struct net_device *bond_dev)
bond->send_peer_notif = 0;
- /* signal timers not to re-arm */
- bond->kill_timers = 1;
-
write_unlock_bh(&bond->lock);
if (bond->params.miimon) { /* link check interval, in milliseconds. */
- cancel_delayed_work(&bond->mii_work);
+ cancel_delayed_work_sync(&bond->mii_work);
}
if (bond->params.arp_interval) { /* arp interval, in milliseconds. */
- cancel_delayed_work(&bond->arp_work);
+ cancel_delayed_work_sync(&bond->arp_work);
}
switch (bond->params.mode) {
case BOND_MODE_8023AD:
- cancel_delayed_work(&bond->ad_work);
+ cancel_delayed_work_sync(&bond->ad_work);
break;
case BOND_MODE_TLB:
case BOND_MODE_ALB:
- cancel_delayed_work(&bond->alb_work);
+ cancel_delayed_work_sync(&bond->alb_work);
break;
default:
break;
}
if (delayed_work_pending(&bond->mcast_work))
- cancel_delayed_work(&bond->mcast_work);
+ cancel_delayed_work_sync(&bond->mcast_work);
if (bond_is_lb(bond)) {
/* Must be called only after all
@@ -4367,26 +4379,22 @@ static void bond_setup(struct net_device *bond_dev)
static void bond_work_cancel_all(struct bonding *bond)
{
- write_lock_bh(&bond->lock);
- bond->kill_timers = 1;
- write_unlock_bh(&bond->lock);
-
if (bond->params.miimon && delayed_work_pending(&bond->mii_work))
- cancel_delayed_work(&bond->mii_work);
+ cancel_delayed_work_sync(&bond->mii_work);
if (bond->params.arp_interval && delayed_work_pending(&bond->arp_work))
- cancel_delayed_work(&bond->arp_work);
+ cancel_delayed_work_sync(&bond->arp_work);
if (bond->params.mode == BOND_MODE_ALB &&
delayed_work_pending(&bond->alb_work))
- cancel_delayed_work(&bond->alb_work);
+ cancel_delayed_work_sync(&bond->alb_work);
if (bond->params.mode == BOND_MODE_8023AD &&
delayed_work_pending(&bond->ad_work))
- cancel_delayed_work(&bond->ad_work);
+ cancel_delayed_work_sync(&bond->ad_work);
if (delayed_work_pending(&bond->mcast_work))
- cancel_delayed_work(&bond->mcast_work);
+ cancel_delayed_work_sync(&bond->mcast_work);
}
/*
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 18:12:26 +0000