+static u32
+nat44_ed_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip,
+ u32 rx_fib_index, u8 is_output);
+
+static u32
+nat44_ed_get_worker_in2out_cb (ip4_header_t * ip, u32 rx_fib_index,
+ u8 is_output);
+
+static u32
+snat_get_worker_out2in_cb (vlib_buffer_t * b, ip4_header_t * ip0,
+ u32 rx_fib_index0, u8 is_output);
+
+static u32
+snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0,
+ u8 is_output);
+
+static u32 nat_calc_bihash_buckets (u32 n_elts);
+
+u8 *
+format_session_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+
+ s = format (s, "%U session-index %llu", format_snat_key, v->key, v->value);
+
+ return s;
+}
+
+u8 *
+format_static_mapping_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+
+ s = format (s, "%U static-mapping-index %llu",
+ format_snat_key, v->key, v->value);
+
+ return s;
+}
+
+u8 *
+format_user_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *);
+ snat_user_key_t k;
+
+ k.as_u64 = v->key;
+
+ s = format (s, "%U fib %d user-index %llu", format_ip4_address, &k.addr,
+ k.fib_index, v->value);
+
+ return s;
+}
+
+u8 *
+format_ed_session_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *);
+
+ u8 proto;
+ u16 r_port, l_port;
+ ip4_address_t l_addr, r_addr;
+ u32 fib_index;
+
+ split_ed_kv (v, &l_addr, &r_addr, &proto, &fib_index, &l_port, &r_port);
+ s =
+ format (s,
+ "local %U:%d remote %U:%d proto %U fib %d thread-index %u session-index %u",
+ format_ip4_address, &l_addr, clib_net_to_host_u16 (l_port),
+ format_ip4_address, &r_addr, clib_net_to_host_u16 (r_port),
+ format_ip_protocol, proto, fib_index,
+ ed_value_get_session_index (v), ed_value_get_thread_index (v));
+
+ return s;
+}
+
+void
+nat44_ei_free_session_data (snat_main_t * sm, snat_session_t * s,
+ u32 thread_index, u8 is_ha)
+{
+ clib_bihash_kv_8_8_t kv;
+
+ snat_main_per_thread_data_t *tsm =
+ vec_elt_at_index (sm->per_thread_data, thread_index);
+
+ init_nat_i2o_k (&kv, s);
+ if (clib_bihash_add_del_8_8 (&tsm->in2out, &kv, 0))
+ nat_elog_warn ("in2out key del failed");
+
+ init_nat_o2i_k (&kv, s);
+ if (clib_bihash_add_del_8_8 (&tsm->out2in, &kv, 0))
+ nat_elog_warn ("out2in key del failed");
+
+ if (!is_ha)
+ {
+ nat_syslog_nat44_apmdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->out2in.addr, s->out2in.port, s->nat_proto);
+
+ nat_ipfix_logging_nat44_ses_delete (thread_index,
+ s->in2out.addr.as_u32,
+ s->out2in.addr.as_u32,
+ s->nat_proto,
+ s->in2out.port,
+ s->out2in.port,
+ s->in2out.fib_index);
+
+ nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
+ s->ext_host_port, s->nat_proto, s->out2in.fib_index,
+ thread_index);
+
+ }
+
+ if (snat_is_session_static (s))
+ return;
+
+ snat_free_outside_address_and_port (sm->addresses, thread_index,
+ &s->out2in.addr, s->out2in.port,
+ s->nat_proto);
+}
+
+static_always_inline void
+nat44_ei_user_del_sessions (snat_user_t * u, u32 thread_index)
+{
+ dlist_elt_t *elt;
+ snat_session_t *s;
+
+ snat_main_t *sm = &snat_main;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+
+ // get head
+ elt = pool_elt_at_index (tsm->list_pool,
+ u->sessions_per_user_list_head_index);
+ // get first element
+ elt = pool_elt_at_index (tsm->list_pool, elt->next);
+
+ while (elt->value != ~0)
+ {
+ s = pool_elt_at_index (tsm->sessions, elt->value);
+ elt = pool_elt_at_index (tsm->list_pool, elt->next);
+
+ nat44_ei_free_session_data (sm, s, thread_index, 0);
+ nat44_delete_session (sm, s, thread_index);
+ }
+}
+
+int
+nat44_ei_user_del (ip4_address_t * addr, u32 fib_index)
+{
+ int rv = 1;
+
+ snat_main_t *sm = &snat_main;
+ snat_main_per_thread_data_t *tsm;
+
+ snat_user_key_t user_key;
+ clib_bihash_kv_8_8_t kv, value;
+
+ if (sm->endpoint_dependent)
+ return rv;
+
+ user_key.addr.as_u32 = addr->as_u32;
+ user_key.fib_index = fib_index;
+ kv.key = user_key.as_u64;
+
+ if (sm->num_workers > 1)
+ {
+ /* *INDENT-OFF* */
+ vec_foreach (tsm, sm->per_thread_data)
+ {
+ if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+ {
+ nat44_ei_user_del_sessions (
+ pool_elt_at_index (tsm->users, value.value),
+ tsm->thread_index);
+ rv = 0;
+ break;
+ }
+ }
+ /* *INDENT-ON* */
+ }
+ else
+ {
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+ if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value))
+ {
+ nat44_ei_user_del_sessions (pool_elt_at_index
+ (tsm->users, value.value),
+ tsm->thread_index);
+ rv = 0;
+ }
+ }
+ return rv;
+}
+