ibv_dm_export_dmabuf_fd(3)                      Libibverbs Programmer's Manual

NAME
       ibv_dm_export_dmabuf_fd - export dmabuf fd for a given ibv_dm.

SYNOPSIS
              #include <infiniband/verbs.h>

              int ibv_dm_export_dmabuf_fd(struct ibv_dm *dm);

DESCRIPTION
       ibv_dm_export_dmabuf_fd() exports a dmabuf fd that is associated with
       the given dm.

       The returned fd can be later used for DMA and RDMA operations
       associated with it.

       Once the usage has been ended close() should be called while supplying
       the fd.

       This call will release resources that were earlier allocated using the
       ibv_dm_export_dmabuf_fd() API.

ARGUMENTS
       dm     An ibv_dm pointer to export the dmabuf fd for its memory.

RETURN VALUE
       ibv_dm_export_dmabuf_fd() returns an fd number >= 0 upon success, or -1
       if the request fails and errno set to the error.

SEE ALSO
       ibv_reg_mr_ex(3)

AUTHOR
       Yishai Hadas <yishaih@nvidia.com>

libibverbs                         2025-12-7        ibv_dm_export_dmabuf_fd(3)