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>