[PATCH] vlan: Make it possible to add vlan with id 4095

Paulius Zaleckas
2012-09-28T12:33:02Z

vconfig help tells that vlan_id should be 0-4095, but fails
with 4095.

There is an off-by-one bug while evaluating vlan_id.
Fix it by evaluating against count(4096), not mask(0x0fff = 4095).

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
---

net/8021q/vlan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 9096bcb..9e528bf 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -199,7 +199,7 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
char name[IFNAMSIZ];
int err;

- if (vlan_id >= VLAN_VID_MASK)
+ if (vlan_id >= VLAN_N_VID)
return -ERANGE;

err = vlan_check_real_dev(real_dev, vlan_id);