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| author | Stephen Hemminger <shemminger@vyatta.com> | 2008-02-05 03:20:13 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-02-05 03:20:13 -0800 |
| commit | 3113e88c3cb3c0a22920b621f8e4d1f2ccc07f1e (patch) | |
| tree | 241192a6492a5254cd1a2fb8fff8e87969ef0420 | |
| parent | dded91611a728d65721cdab3dd41d801a356fa15 (diff) | |
| download | lwn-3113e88c3cb3c0a22920b621f8e4d1f2ccc07f1e.tar.gz lwn-3113e88c3cb3c0a22920b621f8e4d1f2ccc07f1e.zip | |
[PKT_SCHED]: vlan tag match
Provide a way to use tc filters on vlan tag even if tag is buried in
skb due to hardware acceleration.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/pkt_cls.h | 3 | ||||
| -rw-r--r-- | include/linux/tc_ematch/tc_em_meta.h | 1 | ||||
| -rw-r--r-- | net/sched/em_meta.c | 17 |
3 files changed, 20 insertions, 1 deletions
diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h index 1c1dba9ea5fb..40fac8c4559d 100644 --- a/include/linux/pkt_cls.h +++ b/include/linux/pkt_cls.h @@ -459,7 +459,8 @@ enum #define TCF_EM_U32 3 #define TCF_EM_META 4 #define TCF_EM_TEXT 5 -#define TCF_EM_MAX 5 +#define TCF_EM_VLAN 6 +#define TCF_EM_MAX 6 enum { diff --git a/include/linux/tc_ematch/tc_em_meta.h b/include/linux/tc_ematch/tc_em_meta.h index e21937cf91d0..c50d2ba5caf0 100644 --- a/include/linux/tc_ematch/tc_em_meta.h +++ b/include/linux/tc_ematch/tc_em_meta.h @@ -81,6 +81,7 @@ enum TCF_META_ID_SK_SNDTIMEO, TCF_META_ID_SK_SENDMSG_OFF, TCF_META_ID_SK_WRITE_PENDING, + TCF_META_ID_VLAN_TAG, __TCF_META_ID_MAX }; #define TCF_META_ID_MAX (__TCF_META_ID_MAX - 1) diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c index a1e5619b1876..9c2ec1992a2a 100644 --- a/net/sched/em_meta.c +++ b/net/sched/em_meta.c @@ -65,6 +65,7 @@ #include <linux/string.h> #include <linux/skbuff.h> #include <linux/random.h> +#include <linux/if_vlan.h> #include <linux/tc_ematch/tc_em_meta.h> #include <net/dst.h> #include <net/route.h> @@ -170,6 +171,21 @@ META_COLLECTOR(var_dev) } /************************************************************************** + * vlan tag + **************************************************************************/ + +META_COLLECTOR(int_vlan_tag) +{ + unsigned short tag; + if (vlan_get_tag(skb, &tag) < 0) + *err = -1; + else + dst->value = tag; +} + + + +/************************************************************************** * skb attributes **************************************************************************/ @@ -520,6 +536,7 @@ static struct meta_ops __meta_ops[TCF_META_TYPE_MAX+1][TCF_META_ID_MAX+1] = { [META_ID(SK_SNDTIMEO)] = META_FUNC(int_sk_sndtimeo), [META_ID(SK_SENDMSG_OFF)] = META_FUNC(int_sk_sendmsg_off), [META_ID(SK_WRITE_PENDING)] = META_FUNC(int_sk_write_pend), + [META_ID(VLAN_TAG)] = META_FUNC(int_vlan_tag), } }; |