[PATCH net-next 2/5] mlxsw: spectrum_trap: Add ecn_mark trap

[Ido Schimmel]

From: Petr Machata <pe...@nvidia.com>

Register with devlink a new buffer drop trap, ecn_mark. Since Spectrum-1
does not support the ecn_mark trap, do it only for Spectrum-2 and above.

Reviewed-by: Jiri Pirko <j...@nvidia.com>
Signed-off-by: Petr Machata <pe...@nvidia.com>
Signed-off-by: Ido Schimmel <ido...@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
index 4ef12e3e021a..45cf6c027cac 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
@@ -51,6 +51,8 @@ enum {
 enum {
        /* Packet was early dropped. */
        MLXSW_SP_MIRROR_REASON_INGRESS_WRED = 9,
+       /* Packet was ECN marked. */
+       MLXSW_SP_MIRROR_REASON_EGRESS_ECN = 13,
 };
 
 static int mlxsw_sp_rx_listener(struct mlxsw_sp *mlxsw_sp, struct sk_buff *skb,
@@ -1760,6 +1762,13 @@ mlxsw_sp2_trap_items_arr[] = {
                },
                .is_source = true,
        },
+       {
+               .trap = MLXSW_SP_TRAP_BUFFER_DROP(ECN_MARK),
+               .listeners_arr = {
+                       MLXSW_SP_RXL_BUFFER_DISCARD(EGRESS_ECN),
+               },
+               .is_source = true,
+       },
 };
 
 static int
-- 
2.29.2