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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
commit 6c78dcbd47
4 changed files with 22 additions and 20 deletions
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2
include/linux/if_vlan.h
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@ -132,8 +132,6 @@ struct vlan_dev_info {
* made, in order to feed the right changes down
* to the real hardware...
*/
int old_allmulti; /* similar to above. */
int old_promiscuity; /* similar to above. */
struct net_device *real_dev; /* the underlying device/interface */
unsigned char real_dev_addr[ETH_ALEN];
struct proc_dir_entry *dent; /* Holds the proc data */