NAME

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

SYNOPSIS

       #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

       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

       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

       ibv_alloc_parent_domain(3),

AUTHORS

       Alex Rosenbaum <alexr@mellanox.com>

       Yishai Hadas <yishaih@mellanox.com>