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-rw-r--r--drivers/net/bonding/bond_3ad.c30
-rw-r--r--include/net/bond_3ad.h2
2 files changed, 26 insertions, 6 deletions
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index ed170d803247..41e58bd2e606 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -233,7 +233,7 @@ static inline int __check_agg_selection_timer(struct port *port)
if (bond == NULL)
return 0;
- return BOND_AD_INFO(bond).agg_select_timer ? 1 : 0;
+ return atomic_read(&BOND_AD_INFO(bond).agg_select_timer) ? 1 : 0;
}
/**
@@ -1985,7 +1985,7 @@ static void ad_marker_response_received(struct bond_marker *marker,
*/
void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout)
{
- BOND_AD_INFO(bond).agg_select_timer = timeout;
+ atomic_set(&BOND_AD_INFO(bond).agg_select_timer, timeout);
}
/**
@@ -2269,6 +2269,28 @@ void bond_3ad_update_ad_actor_settings(struct bonding *bond)
}
/**
+ * bond_agg_timer_advance - advance agg_select_timer
+ * @bond: bonding structure
+ *
+ * Return true when agg_select_timer reaches 0.
+ */
+static bool bond_agg_timer_advance(struct bonding *bond)
+{
+ int val, nval;
+
+ while (1) {
+ val = atomic_read(&BOND_AD_INFO(bond).agg_select_timer);
+ if (!val)
+ return false;
+ nval = val - 1;
+ if (atomic_cmpxchg(&BOND_AD_INFO(bond).agg_select_timer,
+ val, nval) == val)
+ break;
+ }
+ return nval == 0;
+}
+
+/**
* bond_3ad_state_machine_handler - handle state machines timeout
* @bond: bonding struct to work on
*
@@ -2303,9 +2325,7 @@ void bond_3ad_state_machine_handler(struct work_struct *work)
if (!bond_has_slaves(bond))
goto re_arm;
- /* check if agg_select_timer timer after initialize is timed out */
- if (BOND_AD_INFO(bond).agg_select_timer &&
- !(--BOND_AD_INFO(bond).agg_select_timer)) {
+ if (bond_agg_timer_advance(bond)) {
slave = bond_first_slave_rcu(bond);
port = slave ? &(SLAVE_AD_INFO(slave)->port) : NULL;
diff --git a/include/net/bond_3ad.h b/include/net/bond_3ad.h
index c8696a230b7d..1a28f299a4c6 100644
--- a/include/net/bond_3ad.h
+++ b/include/net/bond_3ad.h
@@ -262,7 +262,7 @@ struct ad_system {
struct ad_bond_info {
struct ad_system system; /* 802.3ad system structure */
struct bond_3ad_stats stats;
- u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */
+ atomic_t agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */
u16 aggregator_identifier;
};