From: Yevgeny Kliteynik <kliteyn@mellanox.com>
Date: Sun, 3 Nov 2019 16:07:23 +0200
Subject: IB/mlx5: Support flow counters offset for bulk counters
Patch-mainline: v5.5-rc1
Git-commit: 208d70f562e563226df178ff8f969364972e9e99
References: jsc#SLE-8446
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
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(-)
--- 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
}
}
-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;
}
@@ -1463,6 +1469,13 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD
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;
--- 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
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
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,
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1367,7 +1367,7 @@ struct mlx5_ib_flow_handler *mlx5_ib_raw
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
--- 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 {