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6lowpan: Only make 6lowpan links to IEEE802154 devices

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Refuse to create 6lowpan links if the actual hardware interface is
of any type other than ARPHRD_IEEE802154.

Signed-off-by: Alan Ott <alan@signal11.us>
Suggested-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alan Ott 2013-10-05 23:15:18 -04:00 committed by David S. Miller
parent 88ba09df23
commit 7adac1ec81
1 changed files with 2 additions and 0 deletions
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net/ieee802154/6lowpan.c
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@ -1372,6 +1372,8 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev,
real_dev = dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
if (!real_dev)
return -ENODEV;
if (real_dev->type != ARPHRD_IEEE802154)
return -EINVAL;
lowpan_dev_info(dev)->real_dev = real_dev;
lowpan_dev_info(dev)->fragment_tag = 0;