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RDMA/mlx5: Introduce UAPI to query PD attributes

Browse source 
Introduce UAPI to query PD attributes, this can be used to retrieve PD
attributes by having the PD handle of the created one and owning the
command FD for the ucontxet.

Link: https://lore.kernel.org/r/20200630093916.332097-7-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Yishai Hadas 2020-06-30 12:39:15 +03:00 committed by Jason Gunthorpe
parent 0fb556b2b5
commit 05f71ef979
5 changed files with 60 additions and 1 deletions
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3
drivers/infiniband/hw/mlx5/Makefile
View file

@ -23,4 +23,5 @@ mlx5_ib-$(CONFIG_INFINIBAND_ON_DEMAND_PAGING) += odp.o
mlx5_ib-$(CONFIG_MLX5_ESWITCH) += ib_rep.o
mlx5_ib-$(CONFIG_INFINIBAND_USER_ACCESS) += devx.o \
flow.o \
qos.o
qos.o \
std_types.o

1
drivers/infiniband/hw/mlx5/main.c
View file

@ -6401,6 +6401,7 @@ static const struct uapi_definition mlx5_ib_defs[] = {
UAPI_DEF_CHAIN(mlx5_ib_devx_defs),
UAPI_DEF_CHAIN(mlx5_ib_flow_defs),
UAPI_DEF_CHAIN(mlx5_ib_qos_defs),
UAPI_DEF_CHAIN(mlx5_ib_std_types_defs),
UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
&mlx5_ib_flow_action),

2
drivers/infiniband/hw/mlx5/mlx5_ib.h
View file

@ -1384,6 +1384,8 @@ 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[];
extern const struct uapi_definition mlx5_ib_qos_defs[];
extern const struct uapi_definition mlx5_ib_std_types_defs[];
#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user);

45
drivers/infiniband/hw/mlx5/std_types.c Normal file
View file

@ -0,0 +1,45 @@
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* Copyright (c) 2020, Mellanox Technologies inc. All rights reserved.
*/
#include <rdma/uverbs_ioctl.h>
#include <rdma/mlx5_user_ioctl_cmds.h>
#include <rdma/mlx5_user_ioctl_verbs.h>
#include <linux/mlx5/driver.h>
#include "mlx5_ib.h"
#define UVERBS_MODULE_NAME mlx5_ib
#include <rdma/uverbs_named_ioctl.h>
static int UVERBS_HANDLER(MLX5_IB_METHOD_PD_QUERY)(
struct uverbs_attr_bundle *attrs)
{
struct ib_pd *pd =
uverbs_attr_get_obj(attrs, MLX5_IB_ATTR_QUERY_PD_HANDLE);
struct mlx5_ib_pd *mpd = to_mpd(pd);
return uverbs_copy_to(attrs, MLX5_IB_ATTR_QUERY_PD_RESP_PDN,
&mpd->pdn, sizeof(mpd->pdn));
}
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_PD_QUERY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_QUERY_PD_HANDLE,
UVERBS_OBJECT_PD,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_QUERY_PD_RESP_PDN,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY));
ADD_UVERBS_METHODS(mlx5_ib_pd,
UVERBS_OBJECT_PD,
&UVERBS_METHOD(MLX5_IB_METHOD_PD_QUERY));
const struct uapi_definition mlx5_ib_std_types_defs[] = {
UAPI_DEF_CHAIN_OBJ_TREE(
UVERBS_OBJECT_PD,
&mlx5_ib_pd),
{},
};

10
include/uapi/rdma/mlx5_user_ioctl_cmds.h
View file

@ -290,4 +290,14 @@ enum mlx5_ib_create_flow_action_create_packet_reformat_attrs {
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF,
};
enum mlx5_ib_query_pd_attrs {
MLX5_IB_ATTR_QUERY_PD_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
MLX5_IB_ATTR_QUERY_PD_RESP_PDN,
};
enum mlx5_ib_pd_methods {
MLX5_IB_METHOD_PD_QUERY = (1U << UVERBS_ID_NS_SHIFT),
};
#endif