RDMA: Add dedicated MR resource tracker function

In order to avoid double multiplexing of the resource when it is a MR, add
a dedicated callback function.

Link: https://lore.kernel.org/r/20200623113043.1228482-5-leon@kernel.orgSigned-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/core/device.c

@@ -2618,7 +2618,8 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
 	SET_DEVICE_OP(dev_ops, drain_sq);
 	SET_DEVICE_OP(dev_ops, enable_driver);
 	SET_DEVICE_OP(dev_ops, fill_res_entry);
-	SET_DEVICE_OP(dev_ops, fill_stat_entry);
+	SET_DEVICE_OP(dev_ops, fill_res_mr_entry);
+	SET_DEVICE_OP(dev_ops, fill_stat_mr_entry);
 	SET_DEVICE_OP(dev_ops, get_dev_fw_str);
 	SET_DEVICE_OP(dev_ops, get_dma_mr);
 	SET_DEVICE_OP(dev_ops, get_hw_stats);

drivers/infiniband/core/nldev.c

@@ -454,14 +454,6 @@ static bool fill_res_entry(struct ib_device *dev, struct sk_buff *msg,
 	return dev->ops.fill_res_entry(msg, res);
 }
 
-static bool fill_stat_entry(struct ib_device *dev, struct sk_buff *msg,
-			    struct rdma_restrack_entry *res)
-{
-	if (!dev->ops.fill_stat_entry)
-		return false;
-	return dev->ops.fill_stat_entry(msg, res);
-}
-
 static int fill_res_qp_entry(struct sk_buff *msg, bool has_cap_net_admin,
 			     struct rdma_restrack_entry *res, uint32_t port)
 {
@@ -641,9 +633,8 @@ static int fill_res_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
 	if (fill_res_name_pid(msg, res))
 		goto err;
 
-	if (fill_res_entry(dev, msg, res))
-		goto err;
-
+	if (dev->ops.fill_res_mr_entry)
+		return dev->ops.fill_res_mr_entry(msg, mr);
 	return 0;
 
 err:	return -EMSGSIZE;
@@ -786,9 +777,8 @@ static int fill_stat_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
 	if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id))
 		goto err;
 
-	if (fill_stat_entry(dev, msg, res))
-		goto err;
-
+	if (dev->ops.fill_stat_mr_entry)
+		return dev->ops.fill_stat_mr_entry(msg, mr);
 	return 0;
 
 err:

drivers/infiniband/hw/cxgb4/iw_cxgb4.h

@@ -1055,6 +1055,7 @@ struct c4iw_wr_wait *c4iw_alloc_wr_wait(gfp_t gfp);
 
 typedef int c4iw_restrack_func(struct sk_buff *msg,
 			       struct rdma_restrack_entry *res);
+int c4iw_fill_res_mr_entry(struct sk_buff *msg, struct ib_mr *ibmr);
 extern c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX];
 
 #endif

drivers/infiniband/hw/cxgb4/provider.c

@@ -486,6 +486,7 @@ static const struct ib_device_ops c4iw_dev_ops = {
 	.destroy_qp = c4iw_destroy_qp,
 	.destroy_srq = c4iw_destroy_srq,
 	.fill_res_entry = fill_res_entry,
+	.fill_res_mr_entry = c4iw_fill_res_mr_entry,
 	.get_dev_fw_str = get_dev_fw_str,
 	.get_dma_mr = c4iw_get_dma_mr,
 	.get_hw_stats = c4iw_get_mib,

drivers/infiniband/hw/cxgb4/restrack.c

@@ -433,10 +433,8 @@ static int fill_res_cq_entry(struct sk_buff *msg,
 	return -EMSGSIZE;
 }
 
-static int fill_res_mr_entry(struct sk_buff *msg,
-			     struct rdma_restrack_entry *res)
+int c4iw_fill_res_mr_entry(struct sk_buff *msg, struct ib_mr *ibmr)
 {
-	struct ib_mr *ibmr = container_of(res, struct ib_mr, res);
 	struct c4iw_mr *mhp = to_c4iw_mr(ibmr);
 	struct c4iw_dev *dev = mhp->rhp;
 	u32 stag = mhp->attr.stag;
@@ -497,5 +495,4 @@ c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX] = {
 	[RDMA_RESTRACK_QP]	= fill_res_qp_entry,
 	[RDMA_RESTRACK_CM_ID]	= fill_res_ep_entry,
 	[RDMA_RESTRACK_CQ]	= fill_res_cq_entry,
-	[RDMA_RESTRACK_MR]	= fill_res_mr_entry,
 };

drivers/infiniband/hw/mlx5/main.c

@@ -6598,8 +6598,8 @@ static const struct ib_device_ops mlx5_ib_dev_ops = {
 	.drain_rq = mlx5_ib_drain_rq,
 	.drain_sq = mlx5_ib_drain_sq,
 	.enable_driver = mlx5_ib_enable_driver,
-	.fill_res_entry = mlx5_ib_fill_res_entry,
-	.fill_stat_entry = mlx5_ib_fill_stat_entry,
+	.fill_res_mr_entry = mlx5_ib_fill_res_mr_entry,
+	.fill_stat_mr_entry = mlx5_ib_fill_stat_mr_entry,
 	.get_dev_fw_str = get_dev_fw_str,
 	.get_dma_mr = mlx5_ib_get_dma_mr,
 	.get_link_layer = mlx5_ib_port_link_layer,

drivers/infiniband/hw/mlx5/mlx5_ib.h

@@ -1375,10 +1375,8 @@ struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *dev,
 						   u8 *native_port_num);
 void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *dev,
 				  u8 port_num);
-int mlx5_ib_fill_res_entry(struct sk_buff *msg,
-			   struct rdma_restrack_entry *res);
-int mlx5_ib_fill_stat_entry(struct sk_buff *msg,
-			    struct rdma_restrack_entry *res);
+int mlx5_ib_fill_res_mr_entry(struct sk_buff *msg, struct ib_mr *ib_mr);
+int mlx5_ib_fill_stat_mr_entry(struct sk_buff *msg, struct ib_mr *ib_mr);
 
 extern const struct uapi_definition mlx5_ib_devx_defs[];
 extern const struct uapi_definition mlx5_ib_flow_defs[];

drivers/infiniband/hw/mlx5/restrack.c

@@ -8,10 +8,9 @@
 #include <rdma/restrack.h>
 #include "mlx5_ib.h"
 
-static int fill_stat_mr_entry(struct sk_buff *msg,
-			      struct rdma_restrack_entry *res)
+int mlx5_ib_fill_stat_mr_entry(struct sk_buff *msg,
+			       struct ib_mr *ibmr)
 {
-	struct ib_mr *ibmr = container_of(res, struct ib_mr, res);
 	struct mlx5_ib_mr *mr = to_mmr(ibmr);
 	struct nlattr *table_attr;
 
@@ -41,10 +40,9 @@ static int fill_stat_mr_entry(struct sk_buff *msg,
 	return -EMSGSIZE;
 }
 
-static int fill_res_mr_entry(struct sk_buff *msg,
-			     struct rdma_restrack_entry *res)
+int mlx5_ib_fill_res_mr_entry(struct sk_buff *msg,
+			      struct ib_mr *ibmr)
 {
-	struct ib_mr *ibmr = container_of(res, struct ib_mr, res);
 	struct mlx5_ib_mr *mr = to_mmr(ibmr);
 	struct nlattr *table_attr;
 
@@ -70,21 +68,3 @@ static int fill_res_mr_entry(struct sk_buff *msg,
 	nla_nest_cancel(msg, table_attr);
 	return -EMSGSIZE;
 }
-
-int mlx5_ib_fill_res_entry(struct sk_buff *msg,
-			   struct rdma_restrack_entry *res)
-{
-	if (res->type == RDMA_RESTRACK_MR)
-		return fill_res_mr_entry(msg, res);
-
-	return 0;
-}
-
-int mlx5_ib_fill_stat_entry(struct sk_buff *msg,
-			    struct rdma_restrack_entry *res)
-{
-	if (res->type == RDMA_RESTRACK_MR)
-		return fill_stat_mr_entry(msg, res);
-
-	return 0;
-}

include/rdma/ib_verbs.h

@@ -2583,6 +2583,7 @@ struct ib_device_ops {
 	 */
 	int (*fill_res_entry)(struct sk_buff *msg,
 			      struct rdma_restrack_entry *entry);
+	int (*fill_res_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr);
 
 	/* Device lifecycle callbacks */
 	/*
@@ -2637,8 +2638,7 @@ struct ib_device_ops {
 	 * Allows rdma drivers to add their own restrack attributes
 	 * dumped via 'rdma stat' iproute2 command.
 	 */
-	int (*fill_stat_entry)(struct sk_buff *msg,
-			       struct rdma_restrack_entry *entry);
+	int (*fill_stat_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr);
 
 	DECLARE_RDMA_OBJ_SIZE(ib_ah);
 	DECLARE_RDMA_OBJ_SIZE(ib_cq);