net/mlx5e: Expose RX dma info helpers

In order to support RQs outside of channel context, change
mlx5e_init_di_list() signature to accept NUMA node instead of cpu.
In addition, expose dma info helpers as API. This API will be used for
RQ's creation in other files in downstream patches.

Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -1072,6 +1072,8 @@ void mlx5e_destroy_q_counters(struct mlx5e_priv *priv);
 int mlx5e_open_drop_rq(struct mlx5e_priv *priv,
 		       struct mlx5e_rq *drop_rq);
 void mlx5e_close_drop_rq(struct mlx5e_rq *drop_rq);
+int mlx5e_init_di_list(struct mlx5e_rq *rq, int wq_sz, int node);
+void mlx5e_free_di_list(struct mlx5e_rq *rq);
 
 int mlx5e_create_indirect_rqt(struct mlx5e_priv *priv);
 

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

@@ -343,13 +343,11 @@ static void mlx5e_init_frags_partition(struct mlx5e_rq *rq)
 		prev->last_in_page = true;
 }
 
-static int mlx5e_init_di_list(struct mlx5e_rq *rq,
-			      int wq_sz, int cpu)
+int mlx5e_init_di_list(struct mlx5e_rq *rq, int wq_sz, int node)
 {
 	int len = wq_sz << rq->wqe.info.log_num_frags;
 
-	rq->wqe.di = kvzalloc_node(array_size(len, sizeof(*rq->wqe.di)),
-				   GFP_KERNEL, cpu_to_node(cpu));
+	rq->wqe.di = kvzalloc_node(array_size(len, sizeof(*rq->wqe.di)), GFP_KERNEL, node);
 	if (!rq->wqe.di)
 		return -ENOMEM;
 
@@ -358,7 +356,7 @@ static int mlx5e_init_di_list(struct mlx5e_rq *rq,
 	return 0;
 }
 
-static void mlx5e_free_di_list(struct mlx5e_rq *rq)
+void mlx5e_free_di_list(struct mlx5e_rq *rq)
 {
 	kvfree(rq->wqe.di);
 }
@@ -500,7 +498,7 @@ static int mlx5e_alloc_rq(struct mlx5e_channel *c,
 			goto err_rq_wq_destroy;
 		}
 
-		err = mlx5e_init_di_list(rq, wq_sz, c->cpu);
+		err = mlx5e_init_di_list(rq, wq_sz, cpu_to_node(c->cpu));
 		if (err)
 			goto err_rq_frags;