Re: [dpdk-dev] [PATCH v2 3/5] common/mlx5: add mlx5 APIs for single flow dump feature

["Kinsella, Ray" <mdr@ashroe.eu>]

On 07/04/2021 07:09, Haifei Luo wrote:
> add mlx5 APIs for single flow dump feature
> 
> Signed-off-by: Haifei Luo <haifeil@nvidia.com>
> ---
>  drivers/common/mlx5/linux/meson.build           |  2 ++
>  drivers/common/mlx5/linux/mlx5_glue.c           | 13 +++++++++++++
>  drivers/common/mlx5/linux/mlx5_glue.h           |  1 +
>  drivers/common/mlx5/mlx5_devx_cmds.c            | 14 ++++++++++++++
>  drivers/common/mlx5/mlx5_devx_cmds.h            |  2 ++
>  drivers/common/mlx5/rte_common_mlx5_exports.def |  1 +

Perhaps check with David Marchand on this, I suspect amendments to the exports file will soon be redundant.

>  drivers/common/mlx5/version.map                 |  1 +
>  7 files changed, 34 insertions(+)
> 
> diff --git a/drivers/common/mlx5/linux/meson.build b/drivers/common/mlx5/linux/meson.build
> index 220de35..3f42163 100644
> --- a/drivers/common/mlx5/linux/meson.build
> +++ b/drivers/common/mlx5/linux/meson.build
> @@ -186,6 +186,8 @@ has_sym_args = [
>  	'mlx5dv_dr_action_create_aso' ],
>  	[ 'HAVE_INFINIBAND_VERBS_H', 'infiniband/verbs.h',
>  	'INFINIBAND_VERBS_H' ],
> +	[ 'HAVE_MLX5_DR_FLOW_DUMP_RULE', 'infiniband/mlx5dv.h',
> +	'mlx5dv_dump_dr_rule' ],
>  ]
>  config = configuration_data()
>  foreach arg:has_sym_args
> diff --git a/drivers/common/mlx5/linux/mlx5_glue.c b/drivers/common/mlx5/linux/mlx5_glue.c
> index 964f7e7..d3bd645 100644
> --- a/drivers/common/mlx5/linux/mlx5_glue.c
> +++ b/drivers/common/mlx5/linux/mlx5_glue.c
> @@ -1101,6 +1101,18 @@
>  }
>  
>  static int
> +mlx5_glue_dr_dump_single_rule(FILE *file, void *rule)
> +{
> +#ifdef HAVE_MLX5_DR_FLOW_DUMP_RULE
> +	return mlx5dv_dump_dr_rule(file, rule);
> +#else
> +	RTE_SET_USED(file);
> +	RTE_SET_USED(rule);
> +	return -ENOTSUP;
> +#endif
> +}
> +
> +static int
>  mlx5_glue_dr_dump_domain(FILE *file, void *domain)
>  {
>  #ifdef HAVE_MLX5_DR_FLOW_DUMP
> @@ -1423,6 +1435,7 @@
>  	.devx_wq_query = mlx5_glue_devx_wq_query,
>  	.devx_port_query = mlx5_glue_devx_port_query,
>  	.dr_dump_domain = mlx5_glue_dr_dump_domain,
> +	.dr_dump_rule = mlx5_glue_dr_dump_single_rule,
>  	.dr_reclaim_domain_memory = mlx5_glue_dr_reclaim_domain_memory,
>  	.dr_create_flow_action_sampler =
>  		mlx5_glue_dr_create_flow_action_sampler,
> diff --git a/drivers/common/mlx5/linux/mlx5_glue.h b/drivers/common/mlx5/linux/mlx5_glue.h
> index 9e385be..97462e9 100644
> --- a/drivers/common/mlx5/linux/mlx5_glue.h
> +++ b/drivers/common/mlx5/linux/mlx5_glue.h
> @@ -313,6 +313,7 @@ struct mlx5_glue {
>  			       uint32_t port_num,
>  			       struct mlx5dv_devx_port *mlx5_devx_port);
>  	int (*dr_dump_domain)(FILE *file, void *domain);
> +	int (*dr_dump_rule)(FILE *file, void *rule);
>  	int (*devx_query_eqn)(struct ibv_context *context, uint32_t cpus,
>  			      uint32_t *eqn);
>  	struct mlx5dv_devx_event_channel *(*devx_create_event_channel)
> diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
> index c90e020..c0b6fdb 100644
> --- a/drivers/common/mlx5/mlx5_devx_cmds.c
> +++ b/drivers/common/mlx5/mlx5_devx_cmds.c
> @@ -1579,6 +1579,20 @@ struct mlx5_devx_obj *
>  	return -ret;
>  }
>  
> +int
> +mlx5_devx_cmd_flow_single_dump(void *rule_info __rte_unused,
> +			FILE *file __rte_unused)
> +{
> +	int ret = 0;
> +#ifdef HAVE_MLX5_DR_FLOW_DUMP_RULE
> +	if (rule_info)
> +		ret = mlx5_glue->dr_dump_rule(file, rule_info);
> +#else
> +	ret = ENOTSUP;
> +#endif
> +	return -ret;
> +}
> +
>  /*
>   * Create CQ using DevX API.
>   *
> diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h
> index 2826c0b..f587d0c 100644
> --- a/drivers/common/mlx5/mlx5_devx_cmds.h
> +++ b/drivers/common/mlx5/mlx5_devx_cmds.h
> @@ -474,6 +474,8 @@ struct mlx5_devx_obj *mlx5_devx_cmd_create_tis(void *ctx,
>  int mlx5_devx_cmd_flow_dump(void *fdb_domain, void *rx_domain, void *tx_domain,
>  			    FILE *file);
>  __rte_internal
> +int mlx5_devx_cmd_flow_single_dump(void *rule, FILE *file);
> +__rte_internal
>  struct mlx5_devx_obj *mlx5_devx_cmd_create_cq(void *ctx,
>  					      struct mlx5_devx_cq_attr *attr);
>  __rte_internal
> diff --git a/drivers/common/mlx5/rte_common_mlx5_exports.def b/drivers/common/mlx5/rte_common_mlx5_exports.def
> index fd62b80..0e6d6d3 100644
> --- a/drivers/common/mlx5/rte_common_mlx5_exports.def
> +++ b/drivers/common/mlx5/rte_common_mlx5_exports.def
> @@ -20,6 +20,7 @@ EXPORTS
>  	mlx5_devx_cmd_flow_counter_alloc
>  	mlx5_devx_cmd_flow_counter_query
>  	mlx5_devx_cmd_flow_dump
> +	mlx5_devx_cmd_flow_single_dump
>  	mlx5_devx_cmd_mkey_create
>  	mlx5_devx_cmd_modify_qp_state
>  	mlx5_devx_cmd_modify_rq
> diff --git a/drivers/common/mlx5/version.map b/drivers/common/mlx5/version.map
> index 91f3fa5..4d49011 100644
> --- a/drivers/common/mlx5/version.map
> +++ b/drivers/common/mlx5/version.map
> @@ -28,6 +28,7 @@ INTERNAL {
>  	mlx5_devx_cmd_flow_counter_alloc;
>  	mlx5_devx_cmd_flow_counter_query;
>  	mlx5_devx_cmd_flow_dump;
> +	mlx5_devx_cmd_flow_single_dump;
>  	mlx5_devx_cmd_mkey_create;
>  	mlx5_devx_cmd_modify_qp_state;
>  	mlx5_devx_cmd_modify_rq;
>