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common/mlx5: glue device and PD import

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Add support for rdma-core API to import device.
The API gets ibv_context file descriptor and returns an ibv_context
pointer that is associated with the given file descriptor.
Add also support for rdma-core API to import PD.
The API gets ibv_context and PD handle and returns a protection domain
(PD) that is associated with the given handle in the given context.

Signed-off-by: Michael Baum <michaelba@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
This commit is contained in:
Michael Baum 2022-02-25 01:25:07 +02:00 committed by Thomas Monjalon
parent c2e3059a10
commit 0777921a61
3 changed files with 47 additions and 0 deletions
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2
drivers/common/mlx5/linux/meson.build
View File

@ -202,6 +202,8 @@ has_sym_args = [
'mlx5dv_dr_domain_allow_duplicate_rules' ],
[ 'HAVE_MLX5_IBV_REG_MR_IOVA', 'infiniband/verbs.h',
'ibv_reg_mr_iova' ],
[ 'HAVE_MLX5_IBV_IMPORT_CTX_PD_AND_MR', 'infiniband/verbs.h',
'ibv_import_device' ],
]
config = configuration_data()
foreach arg:has_sym_args

41
drivers/common/mlx5/linux/mlx5_glue.c
View File

@ -34,6 +34,32 @@ mlx5_glue_dealloc_pd(struct ibv_pd *pd)
return ibv_dealloc_pd(pd);
}
static struct ibv_pd *
mlx5_glue_import_pd(struct ibv_context *context, uint32_t pd_handle)
{
#ifdef HAVE_MLX5_IBV_IMPORT_CTX_PD_AND_MR
return ibv_import_pd(context, pd_handle);
#else
(void)context;
(void)pd_handle;
errno = ENOTSUP;
return NULL;
#endif
}
static int
mlx5_glue_unimport_pd(struct ibv_pd *pd)
{
#ifdef HAVE_MLX5_IBV_IMPORT_CTX_PD_AND_MR
ibv_unimport_pd(pd);
return 0;
#else
(void)pd;
errno = ENOTSUP;
return -errno;
#endif
}
static struct ibv_device **
mlx5_glue_get_device_list(int *num_devices)
{
@ -52,6 +78,18 @@ mlx5_glue_open_device(struct ibv_device *device)
return ibv_open_device(device);
}
static struct ibv_context *
mlx5_glue_import_device(int cmd_fd)
{
#ifdef HAVE_MLX5_IBV_IMPORT_CTX_PD_AND_MR
return ibv_import_device(cmd_fd);
#else
(void)cmd_fd;
errno = ENOTSUP;
return NULL;
#endif
}
static int
mlx5_glue_close_device(struct ibv_context *context)
{
@ -1402,9 +1440,12 @@ const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue) {
.fork_init = mlx5_glue_fork_init,
.alloc_pd = mlx5_glue_alloc_pd,
.dealloc_pd = mlx5_glue_dealloc_pd,
.import_pd = mlx5_glue_import_pd,
.unimport_pd = mlx5_glue_unimport_pd,
.get_device_list = mlx5_glue_get_device_list,
.free_device_list = mlx5_glue_free_device_list,
.open_device = mlx5_glue_open_device,
.import_device = mlx5_glue_import_device,
.close_device = mlx5_glue_close_device,
.query_device = mlx5_glue_query_device,
.query_device_ex = mlx5_glue_query_device_ex,

4
drivers/common/mlx5/linux/mlx5_glue.h
View File

@ -151,9 +151,13 @@ struct mlx5_glue {
int (*fork_init)(void);
struct ibv_pd *(*alloc_pd)(struct ibv_context *context);
int (*dealloc_pd)(struct ibv_pd *pd);
struct ibv_pd *(*import_pd)(struct ibv_context *context,
uint32_t pd_handle);
int (*unimport_pd)(struct ibv_pd *pd);
struct ibv_device **(*get_device_list)(int *num_devices);
void (*free_device_list)(struct ibv_device **list);
struct ibv_context *(*open_device)(struct ibv_device *device);
struct ibv_context *(*import_device)(int cmd_fd);
int (*close_device)(struct ibv_context *context);
int (*query_device)(struct ibv_context *context,
struct ibv_device_attr *device_attr);