net/mlx5e: Change VF representor's RQ size and type

Set the representor's rq params using the same method the
standard nic netdev uses to set its rq params. This allowed
the representor to use a striding rq if it is supported, and
allowed for increasing the size of the representor's rq if it
is not. This increases the representor's receive performance,
as can be seen in the following measruements:

Baseline VF/VM:
          TCP Throughput [Gb/s]   UDP Received PPS (Drop %)
VF to VM            29.1                      571K (0%)
VM to VF            16.4                      623K (27%)

Representor/VM before current changes:
          TCP Throughput [Gb/s]   UDP Received PPS (Drop %)
Representor to VM   40.8                      462K (0%)
VM to Representor    0.6                      248K (74%)

Representor/VM after current changes:
          TCP Throughput [Gb/s]   UDP Received PPS (Drop %)
Representor to VM   40.6                      476K (0%)
VM to Representor   20.2                      620K (74%)

Issue: 1155559
Change-Id: I6cd96f24d1c93da4dd2b8d80ce0ae4ab19028d2a
Signed-off-by: Gavi Teitz <[email protected]>

Author: Gavi Teitz

drivers/net/ethernet/mellanox/mlx5/core/en.h

@@ -932,6 +932,8 @@ void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params,
 				 u8 cq_period_mode);
 void mlx5e_set_rq_type_params(struct mlx5_core_dev *mdev,
 			      struct mlx5e_params *params, u8 rq_type);
+void mlx5e_set_rq_params(struct mlx5_core_dev *mdev,
+			 struct mlx5e_params *params);
 
 static inline
 struct mlx5e_tx_wqe *mlx5e_post_nop(struct mlx5_wq_cyc *wq, u32 sqn, u16 *pc)

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

@@ -115,7 +115,7 @@ void mlx5e_set_rq_type_params(struct mlx5_core_dev *mdev,
 		       MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS));
 }
 
-static void mlx5e_set_rq_params(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
+void mlx5e_set_rq_params(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
 {
 	u8 rq_type = mlx5e_check_fragmented_striding_rq_cap(mdev) &&
 		    !params->xdp_prog && !MLX5_IPSEC_DEV(mdev) ?

drivers/net/ethernet/mellanox/mlx5/core/en_rep.c

@@ -787,15 +787,14 @@ static void mlx5e_build_rep_params(struct mlx5_core_dev *mdev,
 					 MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
 
 	params->log_sq_size = MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE;
-	params->rq_wq_type  = MLX5_WQ_TYPE_LINKED_LIST;
-	params->log_rq_size = MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE;
+
+	mlx5e_set_rq_params(mdev, params);
 
 	params->rx_am_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
 	mlx5e_set_rx_cq_mode_params(params, cq_period_mode);
 
 	params->tx_max_inline         = mlx5e_get_max_inline_cap(mdev);
 	params->num_tc                = 1;
-	params->lro_wqe_sz            = MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;
 
 	mlx5_query_min_inline(mdev, &params->tx_min_inline_mode);
 }
@@ -933,7 +932,7 @@ static struct mlx5e_profile mlx5e_rep_profile = {
 	.max_nch		= mlx5e_get_rep_max_num_channels,
 	.update_carrier		= NULL,
 	.rx_handlers.handle_rx_cqe       = mlx5e_handle_rx_cqe_rep,
-	.rx_handlers.handle_rx_cqe_mpwqe = NULL /* Not supported */,
+	.rx_handlers.handle_rx_cqe_mpwqe = mlx5e_handle_rx_cqe_mpwrq,
 	.max_tc			= 1,
 };