netdev - [patch net-next 14/42] mlxsw: spectrum: Use action 'discard' when removing traps

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Date:	Fri,  1 Jul 2016 16:04:42 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, idosch@...lanox.com, yotamg@...lanox.com,
	eladr@...lanox.com, nogahf@...lanox.com, ogerlitz@...lanox.com,
	sfeldma@...il.com, roopa@...ulusnetworks.com, andy@...yhouse.net,
	dsa@...ulusnetworks.com, tgraf@...g.ch, jhs@...atatu.com,
	linville@...driver.com, ivecera@...hat.com
Subject: [patch net-next 14/42] mlxsw: spectrum: Use action 'discard' when removing traps

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

When removing packet traps we should use action 'discard' instead of
'forward', as some trap IDs we'll add cannot be configured with the
later. However, result is the same, as packets are not trapped to the
CPU.

In the future we will be able to reverse the operation properly by
detaching the trap group from the CPU.

Signed-off-by: Ido Schimmel <idosch@...lanox.com>
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index d15ebf3..de30763 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2295,7 +2295,7 @@ err_rx_trap_set:
 					  mlxsw_sp);
 err_rx_listener_register:
 	for (i--; i >= 0; i--) {
-		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
+		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
 				    mlxsw_sp_rx_listener[i].trap_id);
 		mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
 
@@ -2312,7 +2312,7 @@ static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
-		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
+		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
 				    mlxsw_sp_rx_listener[i].trap_id);
 		mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
 
-- 
2.5.5