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(parent: d814b84) | patch
ip6_gre: Return an error when adding an existing tunnel.
authorSteffen Klassert <steffen.klassert@secunet.com>
Mon, 22 Sep 2014 08:07:26 +0000 (10:07 +0200)
committerDavid S. Miller <davem@davemloft.net>
Sun, 28 Sep 2014 20:19:46 +0000 (16:19 -0400)
commitcd0a0bd9b8e157b19aa38eeac30c60f1a0d010bd
treebc590a02ea4c79082993e0d026d9a6d60b894345tree | snapshot (tar.gz zip)
parentd814b847be7b47575a1cc2194760d3461e1c43c8commit | diff
ip6_gre: Return an error when adding an existing tunnel.

ip6gre_tunnel_locate() should not return an existing tunnel if
create is true. Otherwise it is possible to add the same
tunnel multiple times without getting an error.

So return NULL if the tunnel that should be created already
exists.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/ip6_gre.c diff | blob | blame | history