ib_register_client
ret = ib_register_client(&cm_client);
ret = ib_register_client(&cma_client);
EXPORT_SYMBOL(ib_register_client);
if (ib_register_client(&mad_client)) {
ret = ib_register_client(&mcast_client);
ret = ib_register_client(&sa_client);
ret = ib_register_client(&ucm_client);
ret = ib_register_client(&umad_client);
ret = ib_register_client(&uverbs_client);
ret = ib_register_client(&ipoib_client);
ib_register_client(&sdp_client);
return ib_register_client(&madeye_client);
int ib_register_client (struct ib_client *client);