netdev - [PATCH net-next 10/11] mlxsw: spectrum: Use dedicated trap group for sampled packets

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Message-Id: <20200524215107.1315526-11-idosch@idosch.org>
Date:   Mon, 25 May 2020 00:51:06 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, jiri@...lanox.com,
        mlxsw@...lanox.com, Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net-next 10/11] mlxsw: spectrum: Use dedicated trap group for sampled packets

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

The rate with which packets are sampled is determined by user space, so
there is no need to associate such packets with a policer.

Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/reg.h      | 1 +
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index 4d61c414348f..9b27a129b0a6 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -5547,6 +5547,7 @@ enum mlxsw_reg_htgt_trap_group {
 	MLXSW_REG_HTGT_TRAP_GROUP_SP_PTP0,
 	MLXSW_REG_HTGT_TRAP_GROUP_SP_PTP1,
 	MLXSW_REG_HTGT_TRAP_GROUP_SP_VRRP,
+	MLXSW_REG_HTGT_TRAP_GROUP_SP_PKT_SAMPLE,
 
 	__MLXSW_REG_HTGT_TRAP_GROUP_MAX,
 	MLXSW_REG_HTGT_TRAP_GROUP_MAX = __MLXSW_REG_HTGT_TRAP_GROUP_MAX - 1
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index c4fdfe8fd5a3..d275887bba28 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -4103,7 +4103,7 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
 			     ROUTER_EXP, false),
 	/* PKT Sample trap */
 	MLXSW_RXL(mlxsw_sp_rx_listener_sample_func, PKT_SAMPLE, MIRROR_TO_CPU,
-		  false, SP_IP2ME, DISCARD),
+		  false, SP_PKT_SAMPLE, DISCARD),
 	/* ACL trap */
 	MLXSW_SP_RXL_NO_MARK(ACL0, TRAP_TO_CPU, IP2ME, false),
 	/* Multicast Router Traps */
@@ -4252,6 +4252,7 @@ static int mlxsw_sp_trap_groups_set(struct mlxsw_core *mlxsw_core)
 			priority = 1;
 			tc = 1;
 			break;
+		case MLXSW_REG_HTGT_TRAP_GROUP_SP_PKT_SAMPLE:
 		case MLXSW_REG_HTGT_TRAP_GROUP_SP_LBERROR:
 			priority = 0;
 			tc = 0;
-- 
2.26.2