[SRU][F:linux-bluefield][PATCH 4/5] net/sched: cls_flower: Add match on the ct_state reply flag

[Roi Dayan]

From: Paul Blakey <paulb at nvidia.com>

BugLink: https://bugs.launchpad.net/bugs/1922682

Add match on the ct_state reply flag.

Example:
$ tc filter add dev ens1f0_0 ingress prio 1 chain 1 proto ip flower \
  ct_state +trk+est+rpl \
  action mirred egress redirect dev ens1f0_1
$ tc filter add dev ens1f0_1 ingress prio 1 chain 1 proto ip flower \
  ct_state +trk+est-rpl \
  action mirred egress redirect dev ens1f0_0

Signed-off-by: Paul Blakey <paulb at nvidia.com>
Reviewed-by: Jiri Pirko <jiri at nvidia.com>
Signed-off-by: Jakub Kicinski <kuba at kernel.org>
(cherry picked from commit 8c85d18ce647ac2517a1a1bb01b02648e23700e6)
Signed-off-by: Roi Dayan <roid at nvidia.com>
---
 include/uapi/linux/pkt_cls.h | 1 +
 net/sched/cls_flower.c       | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h
index e82ca1c4edb9..b4b05688a3b6 100644
--- a/include/uapi/linux/pkt_cls.h
+++ b/include/uapi/linux/pkt_cls.h
@@ -564,6 +564,7 @@ enum {
 	TCA_FLOWER_KEY_CT_FLAGS_RELATED = 1 << 2, /* Related to an established connection. */
 	TCA_FLOWER_KEY_CT_FLAGS_TRACKED = 1 << 3, /* Conntrack has occurred. */
 	TCA_FLOWER_KEY_CT_FLAGS_INVALID = 1 << 4, /* Conntrack is invalid. */
+	TCA_FLOWER_KEY_CT_FLAGS_REPLY = 1 << 5, /* Packet is in the reply direction. */
 };
 
 enum {
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 68364d9cc96f..d4d891d60ae8 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -286,9 +286,11 @@ static u16 fl_ct_info_to_flower_map[] = {
 	[IP_CT_RELATED] =		TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
 					TCA_FLOWER_KEY_CT_FLAGS_RELATED,
 	[IP_CT_ESTABLISHED_REPLY] =	TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
-					TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
+					TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED |
+					TCA_FLOWER_KEY_CT_FLAGS_REPLY,
 	[IP_CT_RELATED_REPLY] =		TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
-					TCA_FLOWER_KEY_CT_FLAGS_RELATED,
+					TCA_FLOWER_KEY_CT_FLAGS_RELATED |
+					TCA_FLOWER_KEY_CT_FLAGS_REPLY,
 	[IP_CT_NEW] =			TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
 					TCA_FLOWER_KEY_CT_FLAGS_NEW,
 };
-- 
2.26.2