netdev - [PATCH net-next 4/6] mlxsw: spectrum_qdisc: Offload RED qevent mark

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Message-Id: <20211010114018.190266-5-idosch@idosch.org>
Date:   Sun, 10 Oct 2021 14:40:16 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, jiri@...dia.com,
        petrm@...dia.com, mlxsw@...dia.com,
        Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 4/6] mlxsw: spectrum_qdisc: Offload RED qevent mark

From: Petr Machata <petrm@...dia.com>

The RED "mark" qevent can be offloaded under similar conditions as the RED
"early_drop" qevent. Therefore recognize its binding type in the
TC_SETUP_BLOCK handler and translate to the right SPAN trigger, with the
right set of supported actions.

Signed-off-by: Petr Machata <petrm@...dia.com>
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c       |  2 ++
 drivers/net/ethernet/mellanox/mlxsw/spectrum.h       |  2 ++
 drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c | 10 ++++++++++
 3 files changed, 14 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index d366786ce0f8..3c9844f2aa1d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1035,6 +1035,8 @@ static int mlxsw_sp_setup_tc_block(struct mlxsw_sp_port *mlxsw_sp_port,
 		return mlxsw_sp_setup_tc_block_clsact(mlxsw_sp_port, f, false);
 	case FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP:
 		return mlxsw_sp_setup_tc_block_qevent_early_drop(mlxsw_sp_port, f);
+	case FLOW_BLOCK_BINDER_TYPE_RED_MARK:
+		return mlxsw_sp_setup_tc_block_qevent_mark(mlxsw_sp_port, f);
 	default:
 		return -EOPNOTSUPP;
 	}
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 0ebbd9b04b89..aae1aed5345b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -1195,6 +1195,8 @@ int mlxsw_sp_setup_tc_fifo(struct mlxsw_sp_port *mlxsw_sp_port,
 			   struct tc_fifo_qopt_offload *p);
 int mlxsw_sp_setup_tc_block_qevent_early_drop(struct mlxsw_sp_port *mlxsw_sp_port,
 					      struct flow_block_offload *f);
+int mlxsw_sp_setup_tc_block_qevent_mark(struct mlxsw_sp_port *mlxsw_sp_port,
+					struct flow_block_offload *f);
 
 /* spectrum_fid.c */
 bool mlxsw_sp_fid_is_dummy(struct mlxsw_sp *mlxsw_sp, u16 fid_index);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
index 2dfc9e38307d..e367c63e72bf 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
@@ -2024,6 +2024,16 @@ int mlxsw_sp_setup_tc_block_qevent_early_drop(struct mlxsw_sp_port *mlxsw_sp_por
 					      action_mask);
 }
 
+int mlxsw_sp_setup_tc_block_qevent_mark(struct mlxsw_sp_port *mlxsw_sp_port,
+					struct flow_block_offload *f)
+{
+	unsigned int action_mask = BIT(MLXSW_SP_MALL_ACTION_TYPE_MIRROR);
+
+	return mlxsw_sp_setup_tc_block_qevent(mlxsw_sp_port, f,
+					      MLXSW_SP_SPAN_TRIGGER_ECN,
+					      action_mask);
+}
+
 int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port)
 {
 	struct mlxsw_sp_qdisc_state *qdisc_state;
-- 
2.31.1