-static int unit_find_free_netclass_cgroup(Unit *u, uint32_t *ret) {
-
- uint32_t start, i;
- Manager *m;
-
- assert(u);
-
- m = u->manager;
-
- i = start = m->cgroup_netclass_registry_last;
-
- do {
- i++;
-
- if (!hashmap_get(m->cgroup_netclass_registry, UINT_TO_PTR(i))) {
- m->cgroup_netclass_registry_last = i;
- *ret = i;
- return 0;
- }
-
- if (i == UINT32_MAX)
- i = CGROUP_NETCLASS_FIXED_MAX;
-
- } while (i != start);
-
- return -ENOBUFS;
-}
-
-int unit_add_to_netclass_cgroup(Unit *u) {
-
- CGroupContext *cc;
- Unit *first;
- void *key;
- int r;
-
- assert(u);
-
- cc = unit_get_cgroup_context(u);
- if (!cc)
- return 0;
-
- switch (cc->netclass_type) {
- case CGROUP_NETCLASS_TYPE_NONE:
- return 0;
-
- case CGROUP_NETCLASS_TYPE_FIXED:
- u->cgroup_netclass_id = cc->netclass_id;
- break;
-
- case CGROUP_NETCLASS_TYPE_AUTO:
- /* Allocate a new ID in case it was requested and not done yet */
- if (u->cgroup_netclass_id == 0) {
- r = unit_find_free_netclass_cgroup(u, &u->cgroup_netclass_id);
- if (r < 0)
- return r;
-
- log_debug("Dynamically assigned netclass cgroup id %" PRIu32 " to %s", u->cgroup_netclass_id, u->id);
- }
-
- break;
- }
-
- r = hashmap_ensure_allocated(&u->manager->cgroup_netclass_registry, &trivial_hash_ops);
- if (r < 0)
- return r;
-
- key = UINT32_TO_PTR(u->cgroup_netclass_id);
- first = hashmap_get(u->manager->cgroup_netclass_registry, key);
-
- if (first) {
- LIST_PREPEND(cgroup_netclass, first, u);
- return hashmap_replace(u->manager->cgroup_netclass_registry, key, u);
- }
-
- return hashmap_put(u->manager->cgroup_netclass_registry, key, u);
-}
-
-int unit_remove_from_netclass_cgroup(Unit *u) {
-
- Unit *head;
- void *key;
-
- assert(u);
-
- key = UINT32_TO_PTR(u->cgroup_netclass_id);
-
- LIST_FIND_HEAD(cgroup_netclass, u, head);
- LIST_REMOVE(cgroup_netclass, head, u);
-
- if (head)
- return hashmap_replace(u->manager->cgroup_netclass_registry, key, head);
-
- hashmap_remove(u->manager->cgroup_netclass_registry, key);
-
- return 0;
-}
-