netdev - [patch net-next 09/16] mlxsw: acl_flex_actions: Trap all ACL dropped packets to DISCARD_*

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Message-Id: <20200224073558.26500-10-jiri@resnulli.us>
Date:   Mon, 24 Feb 2020 08:35:51 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, idosch@...lanox.com,
        mlxsw@...lanox.com
Subject: [patch net-next 09/16] mlxsw: acl_flex_actions: Trap all ACL dropped packets to DISCARD_*_ACL traps

From: Jiri Pirko <jiri@...lanox.com>

Introduce a new set of traps:
DISCARD_INGRESS_ACL and DISCARD_EGRESS_ACL
Set the trap_action from NOP to TRAP which causes the packets dropped
by the TRAP action to be trapped under new trap IDs, depending on the
ingress/egress binding point.

Signed-off-by: Jiri Pirko <jiri@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c | 6 ++++--
 drivers/net/ethernet/mellanox/mlxsw/trap.h                  | 2 ++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
index b0e587583528..424ef26e6cca 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
@@ -820,8 +820,10 @@ int mlxsw_afa_block_append_drop(struct mlxsw_afa_block *block, bool ingress)
 
 	if (IS_ERR(act))
 		return PTR_ERR(act);
-	mlxsw_afa_trap_pack(act, MLXSW_AFA_TRAP_TRAP_ACTION_NOP,
-			    MLXSW_AFA_TRAP_FORWARD_ACTION_DISCARD, 0);
+	mlxsw_afa_trap_pack(act, MLXSW_AFA_TRAP_TRAP_ACTION_TRAP,
+			    MLXSW_AFA_TRAP_FORWARD_ACTION_DISCARD,
+			    ingress ? MLXSW_TRAP_ID_DISCARD_INGRESS_ACL :
+				      MLXSW_TRAP_ID_DISCARD_EGRESS_ACL);
 	return 0;
 }
 EXPORT_SYMBOL(mlxsw_afa_block_append_drop);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/trap.h b/drivers/net/ethernet/mellanox/mlxsw/trap.h
index 12e1fa998d42..eaa521b7561b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/trap.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/trap.h
@@ -102,6 +102,8 @@ enum {
 	MLXSW_TRAP_ID_ACL1 = 0x1C1,
 	/* Multicast trap used for routes with trap-and-forward action */
 	MLXSW_TRAP_ID_ACL2 = 0x1C2,
+	MLXSW_TRAP_ID_DISCARD_INGRESS_ACL = 0x1C3,
+	MLXSW_TRAP_ID_DISCARD_EGRESS_ACL = 0x1C4,
 
 	MLXSW_TRAP_ID_MAX = 0x1FF
 };
-- 
2.21.1