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net: add addr len check to dev_mc_add

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Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2010-02-24 22:49:15 +00:00 committed by David S. Miller
parent c79c5ffdce
commit 6e17d45ae3
1 changed files with 2 additions and 0 deletions
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2
net/core/dev_mcast.c
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@ -96,6 +96,8 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
int err; int err;
netif_addr_lock_bh(dev); netif_addr_lock_bh(dev);
if (alen != dev->addr_len)
return -EINVAL;
err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl); err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
if (!err) if (!err)
__dev_set_rx_mode(dev); __dev_set_rx_mode(dev);