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team: Replace rcu_read_lock with a mutex in team_vlan_rx_kill_vid

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[ Upstream commit 60a6531bfe ]

We can't be within an RCU read-side critical section when deleting
VLANs, as underlying drivers might sleep during the hardware operation.
Therefore, replace the RCU critical section with a mutex. This is
consistent with team_vlan_rx_add_vid.

Fixes: 3d249d4ca7 ("net: introduce ethernet teaming device")
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ido Schimmel
2016-01-18 17:30:22 +02:00
committed by Greg Kroah-Hartman
parent 9ef3ceb4e7
commit 442f7b4816
1 changed files with 3 additions and 3 deletions
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6
drivers/net/team/team.c
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@@ -1845,10 +1845,10 @@ static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
struct team *team = netdev_priv(dev);
struct team_port *port;
rcu_read_lock();
list_for_each_entry_rcu(port, &team->port_list, list)
mutex_lock(&team->lock);
list_for_each_entry(port, &team->port_list, list)
vlan_vid_del(port->dev, proto, vid);
rcu_read_unlock();
mutex_unlock(&team->lock);
return 0;
}