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vlan: Avoid hash table lookup to find group.

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A struct net_device always maps to zero or one vlan groups and we
always know the device when we are looking up a group.  We currently
do a hash table lookup on the device to find the group but it is
much simpler to just store a pointer.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jesse Gross
2010-10-20 13:56:05 +00:00
committed by David S. Miller
parent 7b9c609037
commit 65ac6a5fa6
5 changed files with 34 additions and 73 deletions
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5
include/linux/netdevice.h
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@@ -942,7 +942,10 @@ struct net_device {
/* Protocol specific pointers */
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
struct vlan_group *vlgrp; /* VLAN group */
#endif
#ifdef CONFIG_NET_DSA
void *dsa_ptr; /* dsa specific data */
#endif