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[NET_SCHED]: cls_flow: support classification based on VLAN tag

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Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2008-02-05 16:21:04 -08:00 • committed by David S. Miller
parent 181499356e
commit 9ec138101f
2 changed files with 13 additions and 0 deletions
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1
include/linux/pkt_cls.h
View file

@ -348,6 +348,7 @@ enum
FLOW_KEY_RTCLASSID, FLOW_KEY_RTCLASSID,
FLOW_KEY_SKUID, FLOW_KEY_SKUID,
FLOW_KEY_SKGID, FLOW_KEY_SKGID,
FLOW_KEY_VLAN_TAG,
__FLOW_KEY_MAX, __FLOW_KEY_MAX,
}; };

12
net/sched/cls_flow.c
View file

@ -19,6 +19,7 @@
#include <linux/in.h> #include <linux/in.h>
#include <linux/ip.h> #include <linux/ip.h>
#include <linux/ipv6.h> #include <linux/ipv6.h>
#include <linux/if_vlan.h>
#include <net/pkt_cls.h> #include <net/pkt_cls.h>
#include <net/ip.h> #include <net/ip.h>
@ -270,6 +271,15 @@ static u32 flow_get_skgid(const struct sk_buff *skb)
return 0; return 0;
} }
static u32 flow_get_vlan_tag(const struct sk_buff *skb)
{
u16 uninitialized_var(tag);
if (vlan_get_tag(skb, &tag) < 0)
return 0;
return tag & VLAN_VID_MASK;
}
static u32 flow_key_get(const struct sk_buff *skb, int key) static u32 flow_key_get(const struct sk_buff *skb, int key)
{ {
switch (key) { switch (key) {
@ -305,6 +315,8 @@ static u32 flow_key_get(const struct sk_buff *skb, int key)
return flow_get_skuid(skb); return flow_get_skuid(skb);
case FLOW_KEY_SKGID: case FLOW_KEY_SKGID:
return flow_get_skgid(skb); return flow_get_skgid(skb);
case FLOW_KEY_VLAN_TAG:
return flow_get_vlan_tag(skb);
default: default:
WARN_ON(1); WARN_ON(1);
return 0; return 0;