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authorVeaceslav Falico <vfalico@redhat.com>2013-03-12 06:31:32 +0000
committerDavid S. Miller <davem@davemloft.net>2013-03-13 04:53:17 -0400
commit876254ae2758d50dcb08c7bd00caf6a806571178 (patch)
tree0c9b2e5e350d76db147a150befa57cc6908de882 /drivers/net
parentd35162f89b8f00537d7b240b76d2d0e8b8d29aa0 (diff)
downloadop-kernel-dev-876254ae2758d50dcb08c7bd00caf6a806571178.zip
op-kernel-dev-876254ae2758d50dcb08c7bd00caf6a806571178.tar.gz
bonding: don't call update_speed_duplex() under spinlocks
bond_update_speed_duplex() might sleep while calling underlying slave's routines. Move it out of atomic context in bond_enslave() and remove it from bond_miimon_commit() - it was introduced by commit 546add79, however when the slave interfaces go up/change state it's their responsibility to fire NETDEV_UP/NETDEV_CHANGE events so that bonding can properly update their speed. I've tested it on all combinations of ifup/ifdown, autoneg/speed/duplex changes, remote-controlled and local, on (not) MII-based cards. All changes are visible. Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/bonding/bond_main.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 8b4e96e..6bbd90e 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1746,6 +1746,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
bond_compute_features(bond);
+ bond_update_speed_duplex(new_slave);
+
read_lock(&bond->lock);
new_slave->last_arp_rx = jiffies -
@@ -1798,8 +1800,6 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
new_slave->link == BOND_LINK_DOWN ? "DOWN" :
(new_slave->link == BOND_LINK_UP ? "UP" : "BACK"));
- bond_update_speed_duplex(new_slave);
-
if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) {
/* if there is a primary slave, remember it */
if (strcmp(bond->params.primary, new_slave->dev->name) == 0) {
@@ -2374,8 +2374,6 @@ static void bond_miimon_commit(struct bonding *bond)
bond_set_backup_slave(slave);
}
- bond_update_speed_duplex(slave);
-
pr_info("%s: link status definitely up for interface %s, %u Mbps %s duplex.\n",
bond->dev->name, slave->dev->name,
slave->speed, slave->duplex ? "full" : "half");
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