SYSCTL_FOREACH
SYSCTL_FOREACH(group_oidp, SYSCTL_CHILDREN(kobj->oidp)) {
SYSCTL_FOREACH(oidp, SYSCTL_CHILDREN(kobj->oidp)) {
SYSCTL_FOREACH(oid, SYSCTL_CHILDREN(drioid)) {
SYSCTL_FOREACH(oidp, l) {
SYSCTL_FOREACH(oidp, list) {
SYSCTL_FOREACH(oidp, list) {