mlx5dv_get_vfio_device_list - Man Page

Get list of available devices to be used over VFIO

Synopsis

#include <infiniband/mlx5dv.h>

struct ibv_device **
mlx5dv_get_vfio_device_list(struct mlx5dv_vfio_context_attr *attr);

Description

Returns a NULL-terminated array of devices based on input attr.

Arguments

attr: Describe the VFIO devices to return in list.

attr argument

struct mlx5dv_vfio_context_attr {
    const char *pci_name;
    uint32_t flags;
    uint64_t comp_mask;
};

pci_name

The PCI name of the required device.

flags

A bitwise OR of the various values described below.

*MLX5DV_VFIO_CTX_FLAGS_INIT_LINK_DOWN*:
Upon device initialization link should stay down.

comp_mask

Bitmask specifying what fields in the structure are valid.

Return Value

Returns the array of the matching devices, or sets errno and returns NULL if the request fails.

Client code should open all the devices it intends to use with ibv_open_device() before calling ibv_free_device_list(). Once it frees the array with ibv_free_device_list(), it will be able to use only the open devices; pointers to unopened devices will no longer be valid.

Author

Yishai Hadas yishaih@nvidia.com\c

Referenced By

mlx5dv_vfio_get_events_fd(3), mlx5dv_vfio_process_events(3).