diff mbox series

IB/mlx5: Support flow counters offset for bulk counters

Message ID 20210520112920.5570-2-tim.gardner@canonical.com
State New
Headers show
Series IB/mlx5: Support flow counters offset for bulk counters | expand

Commit Message

Tim Gardner May 20, 2021, 11:29 a.m. UTC 
From: Yevgeny Kliteynik <kliteyn@mellanox.com>

BugLink: https://bugs.launchpad.net/bugs/1922494

Add support for flow steering counters action with a non-base counter
ID (offset) for bulk counters.

When creating a flow counter object, save the bulk value.  This value is
used when a flow action with a non-base counter ID is requested - to
validate that the required offset is in the range of the allocated bulk.

Link: https://lore.kernel.org/r/20191103140723.77411-1-leon@kernel.org
Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
(cherry picked from commit 208d70f562e563226df178ff8f969364972e9e99)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
---
 drivers/infiniband/hw/mlx5/devx.c        | 15 +++++++++++-
 drivers/infiniband/hw/mlx5/flow.c        | 29 ++++++++++++++++++++++--
 drivers/infiniband/hw/mlx5/mlx5_ib.h     |  2 +-
 include/uapi/rdma/mlx5_user_ioctl_cmds.h |  1 +
 4 files changed, 43 insertions(+), 4 deletions(-)

Comments

Krzysztof Kozlowski May 20, 2021, 1:22 p.m. UTC | #1 
On 20/05/2021 07:29, Tim Gardner wrote:
> From: Yevgeny Kliteynik <kliteyn@mellanox.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1922494
> 
> Add support for flow steering counters action with a non-base counter
> ID (offset) for bulk counters.
> 
> When creating a flow counter object, save the bulk value.  This value is
> used when a flow action with a non-base counter ID is requested - to
> validate that the required offset is in the range of the allocated bulk.
> 
> Link: https://lore.kernel.org/r/20191103140723.77411-1-leon@kernel.org
> Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
> Reviewed-by: Mark Bloch <markb@mellanox.com>
> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
> (cherry picked from commit 208d70f562e563226df178ff8f969364972e9e99)
> Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
> ---
>  drivers/infiniband/hw/mlx5/devx.c        | 15 +++++++++++-
>  drivers/infiniband/hw/mlx5/flow.c        | 29 ++++++++++++++++++++++--
>  drivers/infiniband/hw/mlx5/mlx5_ib.h     |  2 +-
>  include/uapi/rdma/mlx5_user_ioctl_cmds.h |  1 +
>  4 files changed, 43 insertions(+), 4 deletions(-)
> 


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>


Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c
index 08d20cbb41f4e..ae2e761b0e475 100644
--- a/drivers/infiniband/hw/mlx5/devx.c
+++ b/drivers/infiniband/hw/mlx5/devx.c
@@ -100,6 +100,7 @@  struct devx_obj {
 		struct mlx5_ib_devx_mr	devx_mr;
 		struct mlx5_core_dct	core_dct;
 		struct mlx5_core_cq	core_cq;
+		u32			flow_counter_bulk_size;
 	};
 	struct list_head event_sub; /* holds devx_event_subscription entries */
 };
@@ -192,15 +193,20 @@  bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id, int *dest_type)
 	}
 }
 
-bool mlx5_ib_devx_is_flow_counter(void *obj, u32 *counter_id)
+bool mlx5_ib_devx_is_flow_counter(void *obj, u32 offset, u32 *counter_id)
 {
 	struct devx_obj *devx_obj = obj;
 	u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
 
 	if (opcode == MLX5_CMD_OP_DEALLOC_FLOW_COUNTER) {
+
+		if (offset && offset >= devx_obj->flow_counter_bulk_size)
+			return false;
+
 		*counter_id = MLX5_GET(dealloc_flow_counter_in,
 				       devx_obj->dinbox,
 				       flow_counter_id);
+		*counter_id += offset;
 		return true;
 	}
 
@@ -1470,6 +1476,13 @@  static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)(
 	if (err)
 		goto obj_free;
 
+	if (opcode == MLX5_CMD_OP_ALLOC_FLOW_COUNTER) {
+		u8 bulk = MLX5_GET(alloc_flow_counter_in,
+				   cmd_in,
+				   flow_counter_bulk);
+		obj->flow_counter_bulk_size = 128UL * bulk;
+	}
+
 	uobj->object = obj;
 	INIT_LIST_HEAD(&obj->event_sub);
 	obj->ib_dev = dev;
diff --git a/drivers/infiniband/hw/mlx5/flow.c b/drivers/infiniband/hw/mlx5/flow.c
index b198ff10cde96..dbee17d22d50b 100644
--- a/drivers/infiniband/hw/mlx5/flow.c
+++ b/drivers/infiniband/hw/mlx5/flow.c
@@ -85,6 +85,8 @@  static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 	struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
 	int len, ret, i;
 	u32 counter_id = 0;
+	u32 *offset_attr;
+	u32 offset = 0;
 
 	if (!capable(CAP_NET_RAW))
 		return -EPERM;
@@ -151,8 +153,27 @@  static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 	if (len) {
 		devx_obj = arr_flow_actions[0]->object;
 
-		if (!mlx5_ib_devx_is_flow_counter(devx_obj, &counter_id))
+		if (uverbs_attr_is_valid(attrs,
+					 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET)) {
+
+			int num_offsets = uverbs_attr_ptr_get_array_size(
+				attrs,
+				MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
+				sizeof(u32));
+
+			if (num_offsets != 1)
+				return -EINVAL;
+
+			offset_attr = uverbs_attr_get_alloced_ptr(
+				attrs,
+				MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET);
+			offset = *offset_attr;
+		}
+
+		if (!mlx5_ib_devx_is_flow_counter(devx_obj, offset,
+						  &counter_id))
 			return -EINVAL;
+
 		flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
 	}
 
@@ -598,7 +619,11 @@  DECLARE_UVERBS_NAMED_METHOD(
 	UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX,
 			     MLX5_IB_OBJECT_DEVX_OBJ,
 			     UVERBS_ACCESS_READ, 1, 1,
-			     UA_OPTIONAL));
+			     UA_OPTIONAL),
+	UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
+			   UVERBS_ATTR_MIN_SIZE(sizeof(u32)),
+			   UA_OPTIONAL,
+			   UA_ALLOC_AND_COPY));
 
 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
 	MLX5_IB_METHOD_DESTROY_FLOW,
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index a9ce46c4c1ae6..b4440b368127d 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1350,7 +1350,7 @@  struct mlx5_ib_flow_handler *mlx5_ib_raw_fs_rule_add(
 	struct mlx5_flow_act *flow_act, u32 counter_id,
 	void *cmd_in, int inlen, int dest_id, int dest_type);
 bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id, int *dest_type);
-bool mlx5_ib_devx_is_flow_counter(void *obj, u32 *counter_id);
+bool mlx5_ib_devx_is_flow_counter(void *obj, u32 offset, u32 *counter_id);
 int mlx5_ib_get_flow_trees(const struct uverbs_object_tree_def **root);
 void mlx5_ib_destroy_flow_action_raw(struct mlx5_ib_flow_action *maction);
 #else
diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h
index d0da070cf0ab7..20d88307f75f3 100644
--- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h
+++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h
@@ -198,6 +198,7 @@  enum mlx5_ib_create_flow_attrs {
 	MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS,
 	MLX5_IB_ATTR_CREATE_FLOW_TAG,
 	MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX,
+	MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
 };
 
 enum mlx5_ib_destoy_flow_attrs {