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net/sched: act_vlan: Introduce TCA_VLAN_ACT_MODIFY vlan action

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TCA_VLAN_ACT_MODIFY allows one to change an existing tag.

It accepts same attributes as TCA_VLAN_ACT_PUSH (protocol, id,
priority).
If packet is vlan tagged, then the tag gets overwritten according to
user specified attributes.

For example, this allows user to replace a tag's vid while preserving
its priority bits (as opposed to "action vlan pop pipe action vlan push").

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shmulik Ladkani 2016-09-19 19:11:10 +03:00 • committed by David S. Miller
parent bfca4c520f
commit 45a497f2d1
2 changed files with 29 additions and 1 deletions
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1
include/uapi/linux/tc_act/tc_vlan.h
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@ -16,6 +16,7 @@
#define TCA_VLAN_ACT_POP 1
#define TCA_VLAN_ACT_PUSH 2
#define TCA_VLAN_ACT_MODIFY 3
struct tc_vlan {
tc_gen;