ceph_decode_entity_addrvec
err = ceph_decode_entity_addrvec(p, end, msgr2, &addr);
int ceph_decode_entity_addrvec(void **p, void *end, bool msgr2,
EXPORT_SYMBOL(ceph_decode_entity_addrvec);
ret = ceph_decode_entity_addrvec(&p, end, true, &addr);
ret = ceph_decode_entity_addrvec(p, end, msgr2, addr);
err = ceph_decode_entity_addrvec(p, end, msgr2, addr);
ret = ceph_decode_entity_addrvec(p, end, msgr2, &addr);
ret = ceph_decode_entity_addrvec(p, end, msgr2, &addr);