NAME

       ibv_is_fork_initialized - check if fork support (ibv_fork_init) is enabled

SYNOPSIS

              #include <infiniband/verbs.h>

              enum ibv_fork_status {
                  IBV_FORK_DISABLED,
                  IBV_FORK_ENABLED,
                  IBV_FORK_UNNEEDED,
              };

              enum ibv_fork_status ibv_is_fork_initialized(void);

DESCRIPTION

       ibv_is_fork_initialized() checks whether libibverbs fork() support was enabled through the
       ibv_fork_init() verb.

RETURN VALUE

       ibv_is_fork_initialized() returns  IBV_FORK_DISABLED  if  fork  support  is  disabled,  or
       IBV_FORK_ENABLED  if  enabled.   IBV_FORK_UNNEEDED  return value indicates that the kernel
       copies DMA pages on fork, hence a call to ibv_fork_init() is unneeded.

NOTES

       The  IBV_FORK_UNNEEDED  return  value  takes   precedence   over   IBV_FORK_DISABLED   and
       IBV_FORK_ENABLED.    If   the   kernel   supports   copy-on-fork   for   DMA   pages  then
       IBV_FORK_UNNEEDED will be returned regardless of whether  ibv_fork_init()  was  called  or
       not.

SEE ALSO

       fork(2), ibv_fork_init(3)

AUTHOR

       Gal Pressman <galpress@amazon.com>