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skbedit: allow the user to specify bitmask for mark

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The user may want to use only some bits of the skb mark in
his skbedit rules because the remaining part might be used by
something else.

Introduce the "mask" parameter to the skbedit actor in order
to implement such functionality.

When the mask is specified, only those bits selected by the
latter are altered really changed by the actor, while the
rest is left untouched.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antonio Quartulli
2016-10-24 20:32:57 +08:00
committed by David S. Miller
parent 6edf10173a
commit 4fe77d82ef
3 changed files with 21 additions and 3 deletions
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2
include/uapi/linux/tc_act/tc_skbedit.h
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@@ -28,6 +28,7 @@
#define SKBEDIT_F_QUEUE_MAPPING 0x2
#define SKBEDIT_F_MARK 0x4
#define SKBEDIT_F_PTYPE 0x8
#define SKBEDIT_F_MASK 0x10
struct tc_skbedit {
tc_gen;
@@ -42,6 +43,7 @@ enum {
TCA_SKBEDIT_MARK,
TCA_SKBEDIT_PAD,
TCA_SKBEDIT_PTYPE,
TCA_SKBEDIT_MASK,
__TCA_SKBEDIT_MAX
};
#define TCA_SKBEDIT_MAX (__TCA_SKBEDIT_MAX - 1)