+int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm)
+{
+ snat_address_t *a = 0;
+ snat_session_t *ses;
+ u32 *ses_to_be_removed = 0, *ses_index;
+ clib_bihash_kv_8_8_t kv, value;
+ snat_user_key_t user_key;
+ snat_user_t *u;
+ snat_main_per_thread_data_t *tsm;
+ snat_static_mapping_t *m;
+ int i;
+
+ /* Find SNAT address */
+ for (i=0; i < vec_len (sm->addresses); i++)
+ {
+ if (sm->addresses[i].addr.as_u32 == addr.as_u32)
+ {
+ a = sm->addresses + i;
+ break;
+ }
+ }
+ if (!a)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ if (delete_sm)
+ {
+ pool_foreach (m, sm->static_mappings,
+ ({
+ if (m->external_addr.as_u32 == addr.as_u32)
+ (void) snat_add_static_mapping (m->local_addr, m->external_addr,
+ m->local_port, m->external_port,
+ m->vrf_id, m->addr_only, ~0, 0);
+ }));
+ }
+ else
+ {
+ /* Check if address is used in some static mapping */
+ if (is_snat_address_used_in_static_mapping(sm, addr))
+ {
+ clib_warning ("address used in static mapping");
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+ }
+
+ /* Delete sessions using address */
+ if (a->busy_ports)
+ {
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ pool_foreach (ses, tsm->sessions, ({
+ if (ses->out2in.addr.as_u32 == addr.as_u32)
+ {
+ /* log NAT event */
+ snat_ipfix_logging_nat44_ses_delete(ses->in2out.addr.as_u32,
+ ses->out2in.addr.as_u32,
+ ses->in2out.protocol,
+ ses->in2out.port,
+ ses->out2in.port,
+ ses->in2out.fib_index);
+ vec_add1 (ses_to_be_removed, ses - tsm->sessions);
+ kv.key = ses->in2out.as_u64;
+ clib_bihash_add_del_8_8 (&sm->in2out, &kv, 0);
+ kv.key = ses->out2in.as_u64;
+ clib_bihash_add_del_8_8 (&sm->out2in, &kv, 0);
+ clib_dlist_remove (tsm->list_pool, ses->per_user_index);
+ user_key.addr = ses->in2out.addr;
+ user_key.fib_index = ses->in2out.fib_index;
+ kv.key = user_key.as_u64;
+ if (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
+ {
+ u = pool_elt_at_index (tsm->users, value.value);
+ u->nsessions--;
+ }
+ }
+ }));
+
+ vec_foreach (ses_index, ses_to_be_removed)
+ pool_put_index (tsm->sessions, ses_index[0]);
+
+ vec_free (ses_to_be_removed);
+ }
+ }
+
+ vec_del1 (sm->addresses, i);
+
+ return 0;
+}
+