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[net-next,5/6] mlxsw: spectrum_trap: Split sampling traps between ASICs

Message ID 20210311122416.2620300-6-idosch@idosch.org (mailing list archive)
State Accepted
Commit 34a277212c67a395b47b715aa89c4b4e2c957d42
Delegated to: Netdev Maintainers
Headers show
Series mlxsw: Implement sampling using mirroring | expand

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Commit Message

Ido Schimmel March 11, 2021, 12:24 p.m. UTC 
From: Ido Schimmel <idosch@nvidia.com>

Sampling of ingress packets is supported using a dedicated sampling
mechanism on all Spectrum ASICs. However, Spectrum-2 and later ASICs
support more sophisticated sampling by mirroring packets to the CPU.

As a preparation for more advanced sampling configurations, split the trap
configuration used for sampled packets between Spectrum-1 and later ASICs.

This is needed since packets that are mirrored to the CPU are trapped
via a different trap identifier compared to packets that are sampled
using the dedicated sampling mechanism.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
---
 .../ethernet/mellanox/mlxsw/spectrum_trap.c   | 39 ++++++++++++-------
 1 file changed, 26 insertions(+), 13 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
index 4ef12e3e021a..6ecc77fde095 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
@@ -463,11 +463,6 @@  static const struct mlxsw_sp_trap_group_item mlxsw_sp_trap_group_items_arr[] = {
 		.hw_group_id = MLXSW_REG_HTGT_TRAP_GROUP_SP_PTP1,
 		.priority = 2,
 	},
-	{
-		.group = DEVLINK_TRAP_GROUP_GENERIC(ACL_SAMPLE, 0),
-		.hw_group_id = MLXSW_REG_HTGT_TRAP_GROUP_SP_PKT_SAMPLE,
-		.priority = 0,
-	},
 	{
 		.group = DEVLINK_TRAP_GROUP_GENERIC(ACL_TRAP, 18),
 		.hw_group_id = MLXSW_REG_HTGT_TRAP_GROUP_SP_FLOW_LOGGING,
@@ -992,14 +987,6 @@  static const struct mlxsw_sp_trap_item mlxsw_sp_trap_items_arr[] = {
 			MLXSW_SP_RXL_NO_MARK(PTP1, PTP1, TRAP_TO_CPU, false),
 		},
 	},
-	{
-		.trap = MLXSW_SP_TRAP_CONTROL(FLOW_ACTION_SAMPLE, ACL_SAMPLE,
-					      MIRROR),
-		.listeners_arr = {
-			MLXSW_RXL(mlxsw_sp_rx_sample_listener, PKT_SAMPLE,
-				  MIRROR_TO_CPU, false, SP_PKT_SAMPLE, DISCARD),
-		},
-	},
 	{
 		.trap = MLXSW_SP_TRAP_CONTROL(FLOW_ACTION_TRAP, ACL_TRAP, TRAP),
 		.listeners_arr = {
@@ -1709,10 +1696,23 @@  int mlxsw_sp_trap_group_policer_hw_id_get(struct mlxsw_sp *mlxsw_sp, u16 id,
 
 static const struct mlxsw_sp_trap_group_item
 mlxsw_sp1_trap_group_items_arr[] = {
+	{
+		.group = DEVLINK_TRAP_GROUP_GENERIC(ACL_SAMPLE, 0),
+		.hw_group_id = MLXSW_REG_HTGT_TRAP_GROUP_SP_PKT_SAMPLE,
+		.priority = 0,
+	},
 };
 
 static const struct mlxsw_sp_trap_item
 mlxsw_sp1_trap_items_arr[] = {
+	{
+		.trap = MLXSW_SP_TRAP_CONTROL(FLOW_ACTION_SAMPLE, ACL_SAMPLE,
+					      MIRROR),
+		.listeners_arr = {
+			MLXSW_RXL(mlxsw_sp_rx_sample_listener, PKT_SAMPLE,
+				  MIRROR_TO_CPU, false, SP_PKT_SAMPLE, DISCARD),
+		},
+	},
 };
 
 static int
@@ -1749,6 +1749,11 @@  mlxsw_sp2_trap_group_items_arr[] = {
 		.priority = 0,
 		.fixed_policer = true,
 	},
+	{
+		.group = DEVLINK_TRAP_GROUP_GENERIC(ACL_SAMPLE, 0),
+		.hw_group_id = MLXSW_REG_HTGT_TRAP_GROUP_SP_PKT_SAMPLE,
+		.priority = 0,
+	},
 };
 
 static const struct mlxsw_sp_trap_item
@@ -1760,6 +1765,14 @@  mlxsw_sp2_trap_items_arr[] = {
 		},
 		.is_source = true,
 	},
+	{
+		.trap = MLXSW_SP_TRAP_CONTROL(FLOW_ACTION_SAMPLE, ACL_SAMPLE,
+					      MIRROR),
+		.listeners_arr = {
+			MLXSW_RXL(mlxsw_sp_rx_sample_listener, PKT_SAMPLE,
+				  MIRROR_TO_CPU, false, SP_PKT_SAMPLE, DISCARD),
+		},
+	},
 };
 
 static int