[dpdk-dev] [PATCH 02/13] net/mlx5: query hca hairpin capabilities

[Slava Ovsiienko]

> -----Original Message-----
> From: Ori Kam <orika at mellanox.com>
> Sent: Thursday, September 26, 2019 9:29
> To: Matan Azrad <matan at mellanox.com>; Shahaf Shuler
> <shahafs at mellanox.com>; Slava Ovsiienko <viacheslavo at mellanox.com>
> Cc: dev at dpdk.org; Ori Kam <orika at mellanox.com>; jingjing.wu at intel.com;
> stephen at networkplumber.org
> Subject: [PATCH 02/13] net/mlx5: query hca hairpin capabilities
> 
> This commit query and store the hairpin capabilities from the device.
> 
> Those capabilities will be used when creating the hairpin queue.
> 
> Signed-off-by: Ori Kam <orika at mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>

> ---
>  drivers/net/mlx5/mlx5.h           | 4 ++++
>  drivers/net/mlx5/mlx5_devx_cmds.c | 7 +++++++
>  2 files changed, 11 insertions(+)
> 
> diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index
> d4d2ca8..cd896c8 100644
> --- a/drivers/net/mlx5/mlx5.h
> +++ b/drivers/net/mlx5/mlx5.h
> @@ -184,6 +184,10 @@ struct mlx5_hca_attr {
>  	uint32_t tunnel_lro_vxlan:1;
>  	uint32_t lro_max_msg_sz_mode:2;
>  	uint32_t
> lro_timer_supported_periods[MLX5_LRO_NUM_SUPP_PERIODS];
> +	uint32_t hairpin:1;
> +	uint32_t log_max_hairpin_queues:5;
> +	uint32_t log_max_hairpin_wq_data_sz:5;
> +	uint32_t log_max_hairpin_num_packets:5;
>  };
> 
>  /* Flow list . */
> diff --git a/drivers/net/mlx5/mlx5_devx_cmds.c
> b/drivers/net/mlx5/mlx5_devx_cmds.c
> index acfe1de..b072c37 100644
> --- a/drivers/net/mlx5/mlx5_devx_cmds.c
> +++ b/drivers/net/mlx5/mlx5_devx_cmds.c
> @@ -327,6 +327,13 @@ struct mlx5_devx_obj *
>  	attr->flow_counters_dump = MLX5_GET(cmd_hca_cap, hcattr,
>  					    flow_counters_dump);
>  	attr->eswitch_manager = MLX5_GET(cmd_hca_cap, hcattr,
> eswitch_manager);
> +	attr->hairpin = MLX5_GET(cmd_hca_cap, hcattr, hairpin);
> +	attr->log_max_hairpin_queues = MLX5_GET(cmd_hca_cap, hcattr,
> +						log_max_hairpin_queues);
> +	attr->log_max_hairpin_wq_data_sz = MLX5_GET(cmd_hca_cap,
> hcattr,
> +
> log_max_hairpin_wq_data_sz);
> +	attr->log_max_hairpin_num_packets = MLX5_GET
> +		(cmd_hca_cap, hcattr, log_min_hairpin_wq_data_sz);
>  	attr->eth_net_offloads = MLX5_GET(cmd_hca_cap, hcattr,
>  					  eth_net_offloads);
>  	attr->eth_virt = MLX5_GET(cmd_hca_cap, hcattr, eth_virt);
> --
> 1.8.3.1