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authorMatthias Schiffer <mschiffer@universe-factory.net>2017-02-23 17:19:41 +0100
committerDavid S. Miller <davem@davemloft.net>2017-02-24 11:42:55 -0500
commit4e37d6911f36545b286d15073f6f2222f840e81c (patch)
tree4139f508e0ceca2b96802686c7eb4683d1cfa8da /drivers/net
parent681a55d71799b575f46fe94121728cf67460d1c3 (diff)
downloadlinux-4e37d6911f36545b286d15073f6f2222f840e81c.tar.bz2
vxlan: correctly validate VXLAN ID against VXLAN_N_VID
The incorrect check caused an off-by-one error: the maximum VID 0xffffff was unusable. Fixes: d342894c5d2f ("vxlan: virtual extensible lan") Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Acked-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/vxlan.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 556953f53437..268c2a12e61d 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2675,7 +2675,7 @@ static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[])
if (data[IFLA_VXLAN_ID]) {
__u32 id = nla_get_u32(data[IFLA_VXLAN_ID]);
- if (id >= VXLAN_VID_MASK)
+ if (id >= VXLAN_N_VID)
return -ERANGE;
}