net/mlx5: DR, Add memory statistics for domain object

Add counters for number of buddies that are currently in use per domain
per buddy type (STE, MODIFY-HEADER, MODIFY-PATTERN).
Signed-off-by: Erez Shitrit <erezsh@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_dbg.c

@@ -633,7 +633,7 @@ dr_dump_domain(struct seq_file *file, struct mlx5dr_domain *dmn)
 	u64 domain_id = DR_DBG_PTR_TO_ID(dmn);
 	int ret;
 
-	seq_printf(file, "%d,0x%llx,%d,0%x,%d,%u.%u.%u,%s,%d\n",
+	seq_printf(file, "%d,0x%llx,%d,0%x,%d,%u.%u.%u,%s,%d,%u,%u,%u\n",
 		   DR_DUMP_REC_TYPE_DOMAIN,
 		   domain_id, dmn->type, dmn->info.caps.gvmi,
 		   dmn->info.supp_sw_steering,
@@ -641,7 +641,10 @@ dr_dump_domain(struct seq_file *file, struct mlx5dr_domain *dmn)
 		   LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL,
 		   LINUX_VERSION_SUBLEVEL,
 		   pci_name(dmn->mdev->pdev),
-		   0); /* domain flags */
+		   0, /* domain flags */
+		   dmn->num_buddies[DR_ICM_TYPE_STE],
+		   dmn->num_buddies[DR_ICM_TYPE_MODIFY_ACTION],
+		   dmn->num_buddies[DR_ICM_TYPE_MODIFY_HDR_PTRN]);
 
 	ret = dr_dump_domain_info(file, &dmn->info, domain_id);
 	if (ret < 0)

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_icm_pool.c

@@ -288,6 +288,8 @@ static int dr_icm_buddy_create(struct mlx5dr_icm_pool *pool)
 	/* add it to the -start- of the list in order to search in it first */
 	list_add(&buddy->list_node, &pool->buddy_mem_list);
 
+	pool->dmn->num_buddies[pool->icm_type]++;
+
 	return 0;
 
 err_cleanup_buddy:
@@ -301,13 +303,17 @@ static int dr_icm_buddy_create(struct mlx5dr_icm_pool *pool)
 
 static void dr_icm_buddy_destroy(struct mlx5dr_icm_buddy_mem *buddy)
 {
+	enum mlx5dr_icm_type icm_type = buddy->pool->icm_type;
+
 	dr_icm_pool_mr_destroy(buddy->icm_mr);
 
 	mlx5dr_buddy_cleanup(buddy);
 
-	if (buddy->pool->icm_type == DR_ICM_TYPE_STE)
+	if (icm_type == DR_ICM_TYPE_STE)
 		dr_icm_buddy_cleanup_ste_cache(buddy);
 
+	buddy->pool->dmn->num_buddies[icm_type]--;
+
 	kvfree(buddy);
 }
 

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h

@@ -72,6 +72,7 @@ enum mlx5dr_icm_type {
 	DR_ICM_TYPE_STE,
 	DR_ICM_TYPE_MODIFY_ACTION,
 	DR_ICM_TYPE_MODIFY_HDR_PTRN,
+	DR_ICM_TYPE_MAX,
 };
 
 static inline enum mlx5dr_icm_chunk_size
@@ -955,6 +956,8 @@ struct mlx5dr_domain {
 	struct list_head dbg_tbl_list;
 	struct mlx5dr_dbg_dump_info dump_info;
 	struct xarray definers_xa;
+	/* memory management statistics */
+	u32 num_buddies[DR_ICM_TYPE_MAX];
 };
 
 struct mlx5dr_table_rx_tx {