[PATCH mlx5-next 7/8] net/mlx5: Add VHCA RX flow destination support for FW steering

[Tariq Toukan <tariqt@nvidia.com>]

From: Shay Drory <shayd@nvidia.com>

Introduce MLX5_FLOW_DESTINATION_TYPE_VHCA_RX as a new flow steering
destination type.

Wire the new destination through flow steering command setup by mapping
it to MLX5_IFC_FLOW_DESTINATION_TYPE_VHCA_RX and passing the vhca id,
extend forward-destination validation to accept it, and teach the flow
steering tracepoint formatter to print rx_vhca_id.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 .../net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c   | 3 +++
 drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c           | 4 ++++
 drivers/net/ethernet/mellanox/mlx5/core/fs_core.c          | 7 +++++--
 include/linux/mlx5/fs.h                                    | 4 ++++
 4 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
index 6d73127b7217..2cf1d3825def 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
@@ -282,6 +282,9 @@ const char *parse_fs_dst(struct trace_seq *p,
 	case MLX5_FLOW_DESTINATION_TYPE_NONE:
 		trace_seq_printf(p, "none\n");
 		break;
+	case MLX5_FLOW_DESTINATION_TYPE_VHCA_RX:
+		trace_seq_printf(p, "rx_vhca_id=%u\n", dst->vhca.id);
+		break;
 	}
 
 	trace_seq_putc(p, 0);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
index 16b28028609d..1cd4cd898ec2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
@@ -716,6 +716,10 @@ static int mlx5_cmd_set_fte(struct mlx5_core_dev *dev,
 				id = dst->dest_attr.ft->id;
 				ifc_type = MLX5_IFC_FLOW_DESTINATION_TYPE_TABLE_TYPE;
 				break;
+			case MLX5_FLOW_DESTINATION_TYPE_VHCA_RX:
+				id = dst->dest_attr.vhca.id;
+				ifc_type = MLX5_IFC_FLOW_DESTINATION_TYPE_VHCA_RX;
+				break;
 			default:
 				id = dst->dest_attr.tir_num;
 				ifc_type = MLX5_IFC_FLOW_DESTINATION_TYPE_TIR;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index 2c3544880a30..003d211306a7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -503,7 +503,8 @@ static bool is_fwd_dest_type(enum mlx5_flow_destination_type type)
 		type == MLX5_FLOW_DESTINATION_TYPE_FLOW_SAMPLER ||
 		type == MLX5_FLOW_DESTINATION_TYPE_TIR ||
 		type == MLX5_FLOW_DESTINATION_TYPE_RANGE ||
-		type == MLX5_FLOW_DESTINATION_TYPE_TABLE_TYPE;
+		type == MLX5_FLOW_DESTINATION_TYPE_TABLE_TYPE ||
+		type == MLX5_FLOW_DESTINATION_TYPE_VHCA_RX;
 }
 
 static bool check_valid_spec(const struct mlx5_flow_spec *spec)
@@ -1890,7 +1891,9 @@ static bool mlx5_flow_dests_cmp(struct mlx5_flow_destination *d1,
 		     d1->range.hit_ft == d2->range.hit_ft &&
 		     d1->range.miss_ft == d2->range.miss_ft &&
 		     d1->range.min == d2->range.min &&
-		     d1->range.max == d2->range.max))
+		     d1->range.max == d2->range.max) ||
+		    (d1->type == MLX5_FLOW_DESTINATION_TYPE_VHCA_RX &&
+		     d1->vhca.id == d2->vhca.id))
 			return true;
 	}
 
diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h
index 9cadb1d5e6df..02064424e868 100644
--- a/include/linux/mlx5/fs.h
+++ b/include/linux/mlx5/fs.h
@@ -55,6 +55,7 @@ enum mlx5_flow_destination_type {
 	MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM,
 	MLX5_FLOW_DESTINATION_TYPE_RANGE,
 	MLX5_FLOW_DESTINATION_TYPE_TABLE_TYPE,
+	MLX5_FLOW_DESTINATION_TYPE_VHCA_RX,
 };
 
 enum {
@@ -189,6 +190,9 @@ struct mlx5_flow_destination {
 		u32			ft_num;
 		struct mlx5_flow_table	*ft;
 		struct mlx5_fc          *counter;
+		struct {
+			u16		id;
+		} vhca;
 		struct {
 			u16		num;
 			u16		vhca_id;
-- 
2.44.0