netdev - [RFC PATCH net-next 09/12] mlxsw: reg: Add new trap action

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Message-Id: <20190528122136.30476-10-idosch@idosch.org>
Date:   Tue, 28 May 2019 15:21:33 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, jiri@...lanox.com, mlxsw@...lanox.com,
        dsahern@...il.com, roopa@...ulusnetworks.com,
        nikolay@...ulusnetworks.com, andy@...yhouse.net,
        pablo@...filter.org, jakub.kicinski@...ronome.com,
        pieter.jansenvanvuuren@...ronome.com, andrew@...n.ch,
        f.fainelli@...il.com, vivien.didelot@...oirfairelinux.com,
        Ido Schimmel <idosch@...lanox.com>
Subject: [RFC PATCH net-next 09/12] mlxsw: reg: Add new trap action

From: Ido Schimmel <idosch@...lanox.com>

Subsequent patches will add discard traps support in mlxsw. The driver
cannot configure such traps with a normal trap action, but need to use
exception trap action, which also increments an error counter.

Signed-off-by: Ido Schimmel <idosch@...lanox.com>
Acked-by: Jiri Pirko <jiri@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/reg.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index e8002bfc1e8f..b4c9c7edd866 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -5429,6 +5429,7 @@ enum mlxsw_reg_hpkt_action {
 	MLXSW_REG_HPKT_ACTION_DISCARD,
 	MLXSW_REG_HPKT_ACTION_SOFT_DISCARD,
 	MLXSW_REG_HPKT_ACTION_TRAP_AND_SOFT_DISCARD,
+	MLXSW_REG_HPKT_ACTION_TRAP_EXCEPTION_TO_CPU,
 };
 
 /* reg_hpkt_action
@@ -5439,6 +5440,7 @@ enum mlxsw_reg_hpkt_action {
  * 3 - Discard.
  * 4 - Soft discard (allow other traps to act on the packet).
  * 5 - Trap and soft discard (allow other traps to overwrite this trap).
+ * 6 - Trap to CPU (CPU receives sole copy) and count it as error.
  * Access: RW
  *
  * Note: Must be set to 0 (forward) for event trap IDs, as they are already
-- 
2.20.1