[dpdk-dev] [PATCH v2 1/4] net/mlx5: add flow action functions to glue

Yongseok Koh yskoh at mellanox.com
Mon Oct 8 21:43:15 CEST 2018


On Sun, Oct 07, 2018 at 05:25:05PM +0300, Dekel Peled wrote:
> This patch adds glue functions for operations:
> - Create packet reformat (encap/decap) flow action.
> - Destroy flow action.
> 
> Signed-off-by: Dekel Peled <dekelp at mellanox.com>
> ---

I'm not still able to compile this patch on my host, which is RH7.4 with MOFED
MLNX_OFED_LINUX-4.4-2.0.4.0.

>  drivers/net/mlx5/mlx5_glue.c | 33 +++++++++++++++++++++++++++++++++
>  drivers/net/mlx5/mlx5_glue.h |  9 +++++++++
>  2 files changed, 42 insertions(+)
> 
> diff --git a/drivers/net/mlx5/mlx5_glue.c b/drivers/net/mlx5/mlx5_glue.c
> index 48590df..caa4c34 100644
> --- a/drivers/net/mlx5/mlx5_glue.c
> +++ b/drivers/net/mlx5/mlx5_glue.c
> @@ -174,6 +174,12 @@
>  	return ibv_destroy_flow(flow_id);
>  }
>  
> +static int
> +mlx5_glue_destroy_flow_action(struct ibv_flow_action *action)
> +{
> +	return ibv_destroy_flow_action(action);
> +}

Shouldn't this be under HAVE_IBV_FLOW_DV_SUPPORT? My host doesn't have it either
- ibv_destroy_flow_action() and ibv_flow_action.

> +
>  static struct ibv_qp *
>  mlx5_glue_create_qp(struct ibv_pd *pd, struct ibv_qp_init_attr *qp_init_attr)
>  {
> @@ -388,6 +394,30 @@
>  #endif
>  }
>  
> +static struct ibv_flow_action *
> +mlx5_glue_dv_create_flow_action_packet_reformat
> +		(struct ibv_context *ctx,
> +		 size_t data_sz,
> +		 void *data,
> +		 enum mlx5dv_flow_action_packet_reformat_type reformat_type,
> +		 enum mlx5dv_flow_table_type ft_type)
> +{
> +#ifdef HAVE_IBV_FLOW_DV_SUPPORT

I don't think your change can be protected by this. According to the git logs of
rdma-core, HAVE_IBV_FLOW_DV_SUPPORT is to mark the following patch of Yishai
Hadas,

	mlx5: Introduce mlx5dv_create_flow

While, the flow action has been added by another patchset of Mark Bloch later,

	mlx5: Add packet reformat flow action

So, it seems to need another macro, doesn't it?
E.g. HAVE_IBV_FLOW_ACTION_DV_SUPPORT

> +	return mlx5dv_create_flow_action_packet_reformat(ctx,
> +							 data_sz,
> +							 data,
> +							 reformat_type,
> +							 ft_type);
> +#else
> +	(void)ctx;
> +	(void)data_sz;
> +	(void)data;
> +	(void)reformat_type;
> +	(void)ft_type;
> +	return NULL;
> +#endif
> +}
> +
>  alignas(RTE_CACHE_LINE_SIZE)
>  const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue){
>  	.version = MLX5_GLUE_VERSION,
> @@ -414,6 +444,7 @@
>  	.modify_wq = mlx5_glue_modify_wq,
>  	.create_flow = mlx5_glue_create_flow,
>  	.destroy_flow = mlx5_glue_destroy_flow,
> +	.destroy_flow_action = mlx5_glue_destroy_flow_action,
>  	.create_qp = mlx5_glue_create_qp,
>  	.create_qp_ex = mlx5_glue_create_qp_ex,
>  	.destroy_qp = mlx5_glue_destroy_qp,
> @@ -437,4 +468,6 @@
>  	.dv_create_flow_matcher = mlx5_glue_dv_create_flow_matcher,
>  	.dv_destroy_flow_matcher = mlx5_glue_dv_destroy_flow_matcher,
>  	.dv_create_flow = mlx5_glue_dv_create_flow,
> +	.dv_create_flow_action_packet_reformat =
> +			mlx5_glue_dv_create_flow_action_packet_reformat,
>  };
> diff --git a/drivers/net/mlx5/mlx5_glue.h b/drivers/net/mlx5/mlx5_glue.h
> index f6e4e38..8ef4fcc 100644
> --- a/drivers/net/mlx5/mlx5_glue.h
> +++ b/drivers/net/mlx5/mlx5_glue.h
> @@ -44,6 +44,8 @@
>  struct mlx5dv_flow_matcher_attr;
>  struct mlx5dv_flow_action_attr;
>  struct mlx5dv_flow_match_parameters;
> +enum mlx5dv_flow_action_packet_reformat_type;
> +enum mlx5dv_flow_table_type;
>  #endif
>  
>  /* LIB_GLUE_VERSION must be updated every time this structure is modified. */
> @@ -85,6 +87,7 @@ struct mlx5_glue {
>  	struct ibv_flow *(*create_flow)(struct ibv_qp *qp,
>  					struct ibv_flow_attr *flow);
>  	int (*destroy_flow)(struct ibv_flow *flow_id);
> +	int (*destroy_flow_action)(struct ibv_flow_action *action);
>  	struct ibv_qp *(*create_qp)(struct ibv_pd *pd,
>  				    struct ibv_qp_init_attr *qp_init_attr);
>  	struct ibv_qp *(*create_qp_ex)
> @@ -137,6 +140,12 @@ struct mlx5_glue {
>  			  struct mlx5dv_flow_match_parameters *match_value,
>  			  size_t num_actions,
>  			  struct mlx5dv_flow_action_attr *actions_attr);
> +	struct ibv_flow_action *(*dv_create_flow_action_packet_reformat)
> +		(struct ibv_context *ctx,
> +		 size_t data_sz,
> +		 void *data,
> +		 enum mlx5dv_flow_action_packet_reformat_type reformat_type,
> +		 enum mlx5dv_flow_table_type ft_type);
>  };
>  
>  const struct mlx5_glue *mlx5_glue;
> -- 
> 1.8.3.1
> 


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