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NAME | SYNOPSIS | DESCRIPTION | ARGUMENTS | RETURN VALUE | SEE ALSO | AUTHOR | COLOPHON |
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mlx5dv_open_device(3) mlx5dv_open_device(3)
mlx5dv_open_device - Open an RDMA device context for the mlx5
provider
#include <infiniband/mlx5dv.h>
struct ibv_context *
mlx5dv_open_device(struct ibv_device *device, struct mlx5dv_context_attr *attr);
Open an RDMA device context with specific mlx5 provider
attributes.
device RDMA device to open.
attr
mlx5dv_context_attr
struct mlx5dv_context_attr {
uint32_t flags;
uint64_t comp_mask;
struct ibv_fd_arr *fds;
};
flags
A bitwise OR of the various values described below.
*MLX5DV_CONTEXT_FLAGS_DEVX*:
Allocate a DEVX context
comp_mask
Bitmask specifying what fields in the structure are valid
*MLX5DV_CONTEXT_ATTR_MASK_FD_ARRAY*:
Valid value in *fds*
fds
Used to pass a file descriptor array.
ibv_fd_arr
struct ibv_fd_arr {
int *arr;
uint32_t count;
};
arr Pointer to the file descriptor array.
count Number of elements in the array.
Returns a pointer to the allocated device context, or NULL if the
request fails.
ibv_open_device(3)
Yishai Hadas ⟨yishaih@mellanox.com⟩
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
linux-rdma@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
mlx5dv_open_device(3)
Pages that refer to this page: mlx5dv_create_mkey(3), mlx5dv_destroy_mkey(3), mlx5dv_mkey_check(3), mlx5dv_qp_cancel_posted_send_wrs(3), mlx5dv_wr_mkey_configure(3), mlx5dv_wr_set_mkey_access_flags(3), mlx5dv_wr_set_mkey_layout_interleaved(3), mlx5dv_wr_set_mkey_layout_list(3), mlx5dv_wr_set_mkey_sig_block(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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