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net/mlx5: Enable setting hairpin queue size 

Allow to specify the size of the hairpin queues along with the
packet buffer data size from the core setup code.

If the driver doesn't provide this, the FW applies proper value that
matches the provided data size and a FW chosen RQ stride size.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Or Gerlitz 2018-01-04 12:26:21 +02:00 committed by Saeed Mahameed
parent 3f6d08d196
commit 4d533e0f86
3 changed files with 9 additions and 2 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/transobj.c
View File

@ -413,6 +413,7 @@ static int mlx5_hairpin_create_rq(struct mlx5_core_dev *mdev,
MLX5_SET(rqc, rqc, counter_set_id, params->q_counter);
MLX5_SET(wq, wq, log_hairpin_data_sz, params->log_data_size);
MLX5_SET(wq, wq, log_hairpin_num_packets, params->log_num_packets);
return mlx5_core_create_rq(mdev, in, MLX5_ST_SZ_BYTES(create_rq_in), rqn);
}
@ -430,6 +431,7 @@ static int mlx5_hairpin_create_sq(struct mlx5_core_dev *mdev,
MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
MLX5_SET(wq, wq, log_hairpin_data_sz, params->log_data_size);
MLX5_SET(wq, wq, log_hairpin_num_packets, params->log_num_packets);
return mlx5_core_create_sq(mdev, in, MLX5_ST_SZ_BYTES(create_sq_in), sqn);
}

8
include/linux/mlx5/mlx5_ifc.h
View File

@ -1031,7 +1031,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 log_max_hairpin_queues[0x5];
u8 reserved_at_3c8[0x3];
u8 log_max_hairpin_wq_data_sz[0x5];
u8 reserved_at_3d0[0xb];
u8 reserved_at_3d0[0x3];
u8 log_max_hairpin_num_packets[0x5];
u8 reserved_at_3d8[0x3];
u8 log_max_wq_sz[0x5];
u8 nic_vport_change_event[0x1];
@ -1172,7 +1174,9 @@ struct mlx5_ifc_wq_bits {
u8 reserved_at_118[0x3];
u8 log_wq_sz[0x5];
u8 reserved_at_120[0xb];
u8 reserved_at_120[0x3];
u8 log_hairpin_num_packets[0x5];
u8 reserved_at_128[0x3];
u8 log_hairpin_data_sz[0x5];
u8 reserved_at_130[0x5];

1
include/linux/mlx5/transobj.h
View File

@ -77,6 +77,7 @@ void mlx5_core_destroy_rqt(struct mlx5_core_dev *dev, u32 rqtn);
struct mlx5_hairpin_params {
u8 log_data_size;
u8 log_num_packets;
u16 q_counter;
int num_channels;
};