From d2d1acdb6a632486be9a731f40c68980c09f0490 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@linux-foundation.org>
Date: Fri, 1 Jun 2007 09:43:57 -0700
Subject: [PATCH] VLAN: kill_vid is only useful for VLAN filtering devices
The interface for network device VLAN extension was confusing.
The kill_vid function is only really useful for devices that do
hardware filtering. Devices that only do VLAN receiption without
filtering were being forced to provide the hook, and there were
bugs in those devices.
Many drivers had kill_vid routine that called vlan_group_set_device, with
NULL, but that is done already.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
net/8021q/vlan.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index bd93c45778d4..ceef57c9ab32 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -240,10 +240,8 @@ static int unregister_vlan_dev(struct net_device *real_dev,
* interlock with HW accelerating devices or SW vlan
* input packet processing.
*/
- if (real_dev->features &
- (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER)) {
+ if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
real_dev->vlan_rx_kill_vid(real_dev, vlan_id);
- }
vlan_group_set_device(grp, vlan_id, NULL);
synchronize_net();
@@ -409,16 +407,14 @@ static struct net_device *register_vlan_device(const char *eth_IF_name,
}
if ((real_dev->features & NETIF_F_HW_VLAN_RX) &&
- (real_dev->vlan_rx_register == NULL ||
- real_dev->vlan_rx_kill_vid == NULL)) {
+ !real_dev->vlan_rx_register) {
printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n",
__FUNCTION__, real_dev->name);
goto out_put_dev;
}
if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) &&
- (real_dev->vlan_rx_add_vid == NULL ||
- real_dev->vlan_rx_kill_vid == NULL)) {
+ (!real_dev->vlan_rx_add_vid || !real_dev->vlan_rx_kill_vid)) {
printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n",
__FUNCTION__, real_dev->name);
goto out_put_dev;
--
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