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| author | Veaceslav Falico <vfalico@redhat.com> | 2013-03-12 06:31:32 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-28 12:11:52 -0700 |
| commit | e7778a61fff957a36c0e53fc565df17d68dcbee6 (patch) | |
| tree | c9a766abdae5ac9803ddc6fe37b5050d600c17d5 /drivers | |
| parent | b52f06719c794cc8df5ea871a4fd498ff252210a (diff) | |
| download | lwn-e7778a61fff957a36c0e53fc565df17d68dcbee6.tar.gz lwn-e7778a61fff957a36c0e53fc565df17d68dcbee6.zip | |
bonding: don't call update_speed_duplex() under spinlocks
[ Upstream commit 876254ae2758d50dcb08c7bd00caf6a806571178 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 6df52c9ba499..dadf337ca61b 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1737,6 +1737,8 @@ 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; @@ -1780,8 +1782,6 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) new_slave->link = BOND_LINK_DOWN; } - 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) { @@ -2462,8 +2462,6 @@ 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"); |