genl_register_family
carp_family_id = genl_register_family(CARP_NL_FAMILY_NAME, 0, 2,
uint16_t genl_register_family(const char *family_name, size_t hdrsize,
ctrl_family_id = genl_register_family(NLSE_FAMILY_NAME, 0, 2, NLSE_ATTR_MAX);
family_id = genl_register_family(PFNL_FAMILY_NAME, 0, 2, PFNL_CMD_MAX);
family_id = genl_register_family(PFLOWNL_FAMILY_NAME, 0, 2,
rpcnl_family_id = genl_register_family(rpcnl_family_name, 0, 1, 1);
family_id = genl_register_family(KTEST_FAMILY_NAME, 0, 1, KTEST_CMD_MAX);