net/sched: introduce Match-all classifier

The matchall classifier matches every packet and allows the user to apply
actions on it. This filter is very useful in usecases where every packet
should be matched, for example, packet mirroring (SPAN) can be setup very
easily using that filter.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h
index 5702e933dc07..a32494887e01 100644
--- a/include/uapi/linux/pkt_cls.h
+++ b/include/uapi/linux/pkt_cls.h
@@ -433,6 +433,17 @@ enum {
 
 #define TCA_FLOWER_MAX (__TCA_FLOWER_MAX - 1)
 
+/* Match-all classifier */
+
+enum {
+        TCA_MATCHALL_UNSPEC,
+        TCA_MATCHALL_CLASSID,
+        TCA_MATCHALL_ACT,
+        __TCA_MATCHALL_MAX,
+};
+
+#define TCA_MATCHALL_MAX (__TCA_MATCHALL_MAX - 1)
+
 /* Extended Matches */
 
 struct tcf_ematch_tree_hdr {