ibv_alloc_td(3) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | AUTHORS | COLOPHON

IBV_ALLOC_TD(3)      Libibverbs Programmer's Manual      IBV_ALLOC_TD(3)

NAME         top

       ibv_alloc_td(), ibv_dealloc_td() - allocate and deallocate thread
       domain object

SYNOPSIS         top

       #include <infiniband/verbs.h>

       struct ibv_td *ibv_alloc_td(struct ibv_context *context,
                                   struct ibv_td_init_attr *init_attr);

       int ibv_dealloc_td(struct ibv_td *td);

DESCRIPTION         top

       ibv_alloc_td() allocates a thread domain object for the RDMA
       device context context.

       The thread domain object defines how the verbs libraries and
       provider will use locks and additional hardware capabilities to
       achieve best performance for handling multi-thread or single-
       thread protection.  An application assigns verbs resources to a
       thread domain when it creates a verbs object.

       If the ibv_td object is specified then any objects created under
       this thread domain will disable internal locking designed to
       protect against concurrent access to that object from multiple
       user threads. By default all verbs objects are safe for multi-
       threaded access, whether or not a thread domain is specified.

       A struct ibv_td can be added to a parent domain via
       ibv_alloc_parent_domain() and then the parent domain can be used
       to create verbs objects.

       ibv_dealloc_td() will deallocate the thread domain td.  All
       resources created with the td should be destroyed prior to
       deallocating the td.

RETURN VALUE         top

       ibv_alloc_td() returns a pointer to the allocated struct ibv_td
       object, or NULL if the request fails (and sets errno to indicate
       the failure reason).

       ibv_dealloc_td() returns 0 on success, or the value of errno on
       failure (which indicates the failure reason).

SEE ALSO         top

       ibv_alloc_parent_domain(3),

AUTHORS         top

       Alex Rosenbaum <[email protected]>

       Yishai Hadas <[email protected]>

COLOPHON         top

       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
       [email protected].  This page was obtained from the
       project's upstream Git repository
       ⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2024-06-14.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2024-06-10.)  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
       [email protected]

libibverbs                     2017-11-06                IBV_ALLOC_TD(3)

Pages that refer to this page: ibv_alloc_parent_domain(3)