Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[linux-2.6-omap-h63xx.git] / drivers / net / bonding / bond_alb.c

diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index 9b55a123c08f26dc611d9eb8a812f728664ef411..b57bc9467dbe7a22d1c609fffa1ca5154daf9382 100644 (file)
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -979,7 +979,7 @@ static void alb_swap_mac_addr(struct bonding *bond, struct slave *slave1, struct
 /*
  * Send learning packets after MAC address swap.
  *
- * Called with RTNL and bond->lock held for read.
+ * Called with RTNL and no other locks
  */
 static void alb_fasten_mac_swap(struct bonding *bond, struct slave *slave1,
                                struct slave *slave2)
@@ -987,6 +987,8 @@ static void alb_fasten_mac_swap(struct bonding *bond, struct slave *slave1,
        int slaves_state_differ = (SLAVE_IS_OK(slave1) != SLAVE_IS_OK(slave2));
        struct slave *disabled_slave = NULL;
 
+       ASSERT_RTNL();
+
        /* fasten the change in the switch */
        if (SLAVE_IS_OK(slave1)) {
                alb_send_learning_packets(slave1, slave1->dev->dev_addr);
@@ -1031,7 +1033,7 @@ static void alb_fasten_mac_swap(struct bonding *bond, struct slave *slave1,
  * a slave that has @slave's permanet address as its current address.
  * We'll make sure that that slave no longer uses @slave's permanent address.
  *
- * Caller must hold bond lock
+ * Caller must hold RTNL and no other locks
  */
 static void alb_change_hw_addr_on_detach(struct bonding *bond, struct slave *slave)
 {
@@ -1542,7 +1544,12 @@ int bond_alb_init_slave(struct bonding *bond, struct slave *slave)
        return 0;
 }
 
-/* Caller must hold bond lock for write */
+/*
+ * Remove slave from tlb and rlb hash tables, and fix up MAC addresses
+ * if necessary.
+ *
+ * Caller must hold RTNL and no other locks
+ */
 void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave)
 {
        if (bond->slave_cnt > 1) {
@@ -1658,12 +1665,11 @@ void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave
                                       bond->alb_info.rlb_enabled);
        }
 
-       read_lock(&bond->lock);
-
        if (swap_slave) {
                alb_fasten_mac_swap(bond, swap_slave, new_slave);
+               read_lock(&bond->lock);
        } else {
-               /* fasten bond mac on new current slave */
+               read_lock(&bond->lock);
                alb_send_learning_packets(new_slave, bond->dev->dev_addr);
        }