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[VLAN]: Fix promiscous/allmulti synchronization races

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The set_multicast_list function may be called without holding the rtnl
mutex, resulting in races when changing the underlying device's promiscous
and allmulti state. Use the change_rx_mode hook, which is always invoked
under the rtnl.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2007-07-14 18:52:56 -07:00
committed by David S. Miller
parent a0a400d79e
commit 6c78dcbd47
4 changed files with 22 additions and 20 deletions
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net/8021q/vlan.h
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@@ -69,6 +69,7 @@ int vlan_dev_set_vlan_flag(const struct net_device *dev,
u32 flag, short flag_val);
void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result);
void vlan_change_rx_flags(struct net_device *dev, int change);
void vlan_dev_set_multicast_list(struct net_device *vlan_dev);
int vlan_check_real_dev(struct net_device *real_dev, unsigned short vlan_id);