/* * Copyright (c) 2018 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * @file * @brief NAT44 CLI */ #include #include #include #include #include #include #include #define NAT44_ED_EXPECTED_ARGUMENT "expected required argument(s)" static clib_error_t * nat44_ed_enable_disable_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd) { snat_main_t *sm = &snat_main; unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; nat44_config_t c = { 0 }; u8 enable_set = 0, enable = 0, mode_set = 0; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (!mode_set && unformat (line_input, "static-mapping-only")) { mode_set = 1; c.static_mapping_only = 1; if (unformat (line_input, "connection-tracking")) { c.connection_tracking = 1; } } else if (unformat (line_input, "inside-vrf %u", &c.inside_vrf)); else if (unformat (line_input, "outside-vrf %u", &c.outside_vrf)); else if (unformat (line_input, "sessions %u", &c.sessions)); else if (!enable_set) { enable_set = 1; if (unformat (line_input, "disable")) ; else if (unformat (line_input, "enable")) enable = 1; } else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (!enable_set) { error = clib_error_return (0, "expected enable | disable"); goto done; } if (enable) { if (sm->enabled) { error = clib_error_return (0, "already enabled"); goto done; } if (nat44_plugin_enable (c) != 0) error = clib_error_return (0, "enable failed"); } else { if (!sm->enabled) { error = clib_error_return (0, "already disabled"); goto done; } if (nat44_plugin_disable () != 0) error = clib_error_return (0, "disable failed"); } done: unformat_free (line_input); return error; } static clib_error_t * set_workers_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; uword *bitmap = 0; int rv = 0; clib_error_t *error = 0; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "%U", unformat_bitmap_list, &bitmap)) ; else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (bitmap == 0) { error = clib_error_return (0, "List of workers must be specified."); goto done; } rv = snat_set_workers (bitmap); clib_bitmap_free (bitmap); switch (rv) { case VNET_API_ERROR_INVALID_WORKER: error = clib_error_return (0, "Invalid worker(s)."); goto done; case VNET_API_ERROR_FEATURE_DISABLED: error = clib_error_return (0, "Supported only if 2 or more workes available."); goto done; default: break; } done: unformat_free (line_input); return error; } static clib_error_t * nat_show_workers_commnad_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; u32 *worker; if (sm->num_workers > 1) { vlib_cli_output (vm, "%d workers", vec_len (sm->workers)); vec_foreach (worker, sm->workers) { vlib_worker_thread_t *w = vlib_worker_threads + *worker + sm->first_worker_index; vlib_cli_output (vm, " %s", w->name); } } return 0; } static clib_error_t * snat_set_log_level_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; snat_main_t *sm = &snat_main; u8 log_level = NAT_LOG_NONE; clib_error_t *error = 0; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); if (!unformat (line_input, "%d", &log_level)) { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } if (log_level > NAT_LOG_DEBUG) { error = clib_error_return (0, "unknown logging level '%d'", log_level); goto done; } sm->log_level = log_level; done: unformat_free (line_input); return error; } static clib_error_t * snat_ipfix_logging_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; u32 domain_id = 0, src_port = 0; u8 enable_set = 0, enable = 0; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "domain %d", &domain_id)) ; else if (unformat (line_input, "src-port %d", &src_port)) ; else if (!enable_set) { enable_set = 1; if (unformat (line_input, "disable")) ; else if (unformat (line_input, "enable")) enable = 1; } else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (!enable_set) { error = clib_error_return (0, "expected enable | disable"); goto done; } if (nat_ipfix_logging_enable_disable (enable, domain_id, (u16) src_port)) { error = clib_error_return (0, "ipfix logging enable failed"); goto done; } done: unformat_free (line_input); return error; } static clib_error_t * nat44_show_hash_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; nat_affinity_main_t *nam = &nat_affinity_main; int i; int verbose = 0; if (unformat (input, "detail")) verbose = 1; else if (unformat (input, "verbose")) verbose = 2; vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->static_mapping_by_local, verbose); vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->static_mapping_by_external, verbose); vlib_cli_output (vm, "%U", format_bihash_16_8, &sm->flow_hash, verbose); vec_foreach_index (i, sm->per_thread_data) { vlib_cli_output (vm, "-------- thread %d %s --------\n", i, vlib_worker_threads[i].name); vlib_cli_output (vm, "%U", format_bihash_16_8, &sm->flow_hash, verbose); } vlib_cli_output (vm, "%U", format_bihash_16_8, &nam->affinity_hash, verbose); vlib_cli_output (vm, "-------- hash table parameters --------\n"); vlib_cli_output (vm, "translation buckets: %u", sm->translation_buckets); return 0; } static clib_error_t * nat_set_mss_clamping_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; snat_main_t *sm = &snat_main; clib_error_t *error = 0; u32 mss; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "disable")) sm->mss_clamping = 0; else if (unformat (line_input, "%d", &mss)) sm->mss_clamping = (u16) mss; else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } done: unformat_free (line_input); return error; } static clib_error_t * nat_show_mss_clamping_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; if (sm->mss_clamping) vlib_cli_output (vm, "mss-clamping %d", sm->mss_clamping); else vlib_cli_output (vm, "mss-clamping disabled"); return 0; } static clib_error_t * add_address_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; snat_main_t *sm = &snat_main; ip4_address_t start_addr, end_addr, this_addr; u32 start_host_order, end_host_order; u32 vrf_id = ~0; int i, count; int is_add = 1; int rv = 0; clib_error_t *error = 0; u8 twice_nat = 0; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "%U - %U", unformat_ip4_address, &start_addr, unformat_ip4_address, &end_addr)) ; else if (unformat (line_input, "tenant-vrf %u", &vrf_id)) ; else if (unformat (line_input, "%U", unformat_ip4_address, &start_addr)) end_addr = start_addr; else if (unformat (line_input, "twice-nat")) twice_nat = 1; else if (unformat (line_input, "del")) is_add = 0; else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (sm->static_mapping_only) { error = clib_error_return (0, "static mapping only mode"); goto done; } start_host_order = clib_host_to_net_u32 (start_addr.as_u32); end_host_order = clib_host_to_net_u32 (end_addr.as_u32); if (end_host_order < start_host_order) { error = clib_error_return (0, "end address less than start address"); goto done; } count = (end_host_order - start_host_order) + 1; if (count > 1024) nat_log_info ("%U - %U, %d addresses...", format_ip4_address, &start_addr, format_ip4_address, &end_addr, count); this_addr = start_addr; for (i = 0; i < count; i++) { if (is_add) { rv = nat44_ed_add_address (&this_addr, vrf_id, twice_nat); } else { rv = nat44_ed_del_address (this_addr, 0, twice_nat); } switch (rv) { case VNET_API_ERROR_VALUE_EXIST: error = clib_error_return (0, "NAT address already in use."); goto done; case VNET_API_ERROR_NO_SUCH_ENTRY: error = clib_error_return (0, "NAT address not exist."); goto done; case VNET_API_ERROR_UNSPECIFIED: error = clib_error_return (0, "NAT address used in static mapping."); goto done; default: break; } increment_v4_address (&this_addr); } done: unformat_free (line_input); return error; } static void nat44_show_lru_summary (vlib_main_t * vm, snat_main_per_thread_data_t * tsm, u64 now, u64 sess_timeout_time) { snat_main_t *sm = &snat_main; dlist_elt_t *oldest_elt; snat_session_t *s; u32 oldest_index; if (tsm->lru_pool) { #define _(n, d) \ oldest_index = \ clib_dlist_remove_head (tsm->lru_pool, tsm->n##_lru_head_index); \ if (~0 != oldest_index) \ { \ oldest_elt = pool_elt_at_index (tsm->lru_pool, oldest_index); \ s = pool_elt_at_index (tsm->sessions, oldest_elt->value); \ sess_timeout_time = \ s->last_heard + (f64) nat44_session_get_timeout (sm, s); \ vlib_cli_output (vm, d " LRU min session timeout %llu (now %llu)", \ sess_timeout_time, now); \ clib_dlist_addhead (tsm->lru_pool, tsm->n##_lru_head_index, \ oldest_index); \ } _ (tcp_estab, "established tcp"); _ (tcp_trans, "transitory tcp"); _ (udp, "udp"); _ (unk_proto, "unknown protocol"); _ (icmp, "icmp"); #undef _ } } static clib_error_t * nat44_show_summary_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_per_thread_data_t *tsm; snat_main_t *sm = &snat_main; snat_session_t *s; u32 count = 0; u64 now = vlib_time_now (vm); u64 sess_timeout_time = 0; u32 udp_sessions = 0; u32 tcp_sessions = 0; u32 icmp_sessions = 0; u32 timed_out = 0; u32 transitory = 0; u32 transitory_wait_closed = 0; u32 transitory_closed = 0; u32 established = 0; u32 fib; for (fib = 0; fib < vec_len (sm->max_translations_per_fib); fib++) vlib_cli_output (vm, "max translations per thread: %u fib %u", sm->max_translations_per_fib[fib], fib); if (sm->num_workers > 1) { vec_foreach (tsm, sm->per_thread_data) { pool_foreach (s, tsm->sessions) { sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s); if (now >= sess_timeout_time) timed_out++; switch (s->nat_proto) { case NAT_PROTOCOL_ICMP: icmp_sessions++; break; case NAT_PROTOCOL_TCP: tcp_sessions++; if (s->state) { if (s->tcp_closed_timestamp) { if (now >= s->tcp_closed_timestamp) { ++transitory_closed; } else { ++transitory_wait_closed; } } transitory++; } else established++; break; case NAT_PROTOCOL_UDP: default: udp_sessions++; break; } } nat44_show_lru_summary (vm, tsm, now, sess_timeout_time); count += pool_elts (tsm->sessions); } } else { tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); pool_foreach (s, tsm->sessions) { sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s); if (now >= sess_timeout_time) timed_out++; switch (s->nat_proto) { case NAT_PROTOCOL_ICMP: icmp_sessions++; break; case NAT_PROTOCOL_TCP: tcp_sessions++; if (s->state) { if (s->tcp_closed_timestamp) { if (now >= s->tcp_closed_timestamp) { ++transitory_closed; } else { ++transitory_wait_closed; } } transitory++; } else established++; break; case NAT_PROTOCOL_UDP: default: udp_sessions++; break; } } nat44_show_lru_summary (vm, tsm, now, sess_timeout_time); count = pool_elts (tsm->sessions); } vlib_cli_output (vm, "total timed out sessions: %u", timed_out); vlib_cli_output (vm, "total sessions: %u", count); vlib_cli_output (vm, "total tcp sessions: %u", tcp_sessions); vlib_cli_output (vm, "total tcp established sessions: %u", established); vlib_cli_output (vm, "total tcp transitory sessions: %u", transitory); vlib_cli_output (vm, "total tcp transitory (WAIT-CLOSED) sessions: %u", transitory_wait_closed); vlib_cli_output (vm, "total tcp transitory (CLOSED) sessions: %u", transitory_closed); vlib_cli_output (vm, "total udp sessions: %u", udp_sessions); vlib_cli_output (vm, "total icmp sessions: %u", icmp_sessions); return 0; } static clib_error_t * nat44_show_addresses_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; snat_address_t *ap; vlib_cli_output (vm, "NAT44 pool addresses:"); vec_foreach (ap, sm->addresses) { vlib_cli_output (vm, "%U", format_ip4_address, &ap->addr); if (ap->fib_index != ~0) vlib_cli_output (vm, " tenant VRF: %u", fib_table_get(ap->fib_index, FIB_PROTOCOL_IP4)->ft_table_id); else vlib_cli_output (vm, " tenant VRF independent"); #define _(N, i, n, s) \ vlib_cli_output (vm, " %d busy %s ports", ap->busy_##n##_ports, s); foreach_nat_protocol #undef _ } vlib_cli_output (vm, "NAT44 twice-nat pool addresses:"); vec_foreach (ap, sm->twice_nat_addresses) { vlib_cli_output (vm, "%U", format_ip4_address, &ap->addr); if (ap->fib_index != ~0) vlib_cli_output (vm, " tenant VRF: %u", fib_table_get(ap->fib_index, FIB_PROTOCOL_IP4)->ft_table_id); else vlib_cli_output (vm, " tenant VRF independent"); #define _(N, i, n, s) \ vlib_cli_output (vm, " %d busy %s ports", ap->busy_##n##_ports, s); foreach_nat_protocol #undef _ } return 0; } static clib_error_t * snat_feature_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; vnet_main_t *vnm = vnet_get_main (); clib_error_t *error = 0; u32 sw_if_index; u32 *inside_sw_if_indices = 0; u32 *outside_sw_if_indices = 0; u8 is_output_feature = 0; int i, rv, is_del = 0; sw_if_index = ~0; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "in %U", unformat_vnet_sw_interface, vnm, &sw_if_index)) vec_add1 (inside_sw_if_indices, sw_if_index); else if (unformat (line_input, "out %U", unformat_vnet_sw_interface, vnm, &sw_if_index)) vec_add1 (outside_sw_if_indices, sw_if_index); else if (unformat (line_input, "output-feature")) is_output_feature = 1; else if (unformat (line_input, "del")) is_del = 1; else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (vec_len (inside_sw_if_indices)) { for (i = 0; i < vec_len (inside_sw_if_indices); i++) { sw_if_index = inside_sw_if_indices[i]; if (is_output_feature) { if (is_del) { rv = nat44_ed_del_output_interface (sw_if_index); } else { rv = nat44_ed_add_output_interface (sw_if_index); } if (rv) { error = clib_error_return (0, "%s %U failed", is_del ? "del" : "add", format_vnet_sw_if_index_name, vnm, sw_if_index); goto done; } } else { if (is_del) { rv = nat44_ed_del_interface (sw_if_index, 1); } else { rv = nat44_ed_add_interface (sw_if_index, 1); } if (rv) { error = clib_error_return (0, "%s %U failed", is_del ? "del" : "add", format_vnet_sw_if_index_name, vnm, sw_if_index); goto done; } } } } if (vec_len (outside_sw_if_indices)) { for (i = 0; i < vec_len (outside_sw_if_indices); i++) { sw_if_index = outside_sw_if_indices[i]; if (is_output_feature) { if (is_del) { rv = nat44_ed_del_output_interface (sw_if_index); } else { rv = nat44_ed_add_output_interface (sw_if_index); } if (rv) { error = clib_error_return (0, "%s %U failed", is_del ? "del" : "add", format_vnet_sw_if_index_name, vnm, sw_if_index); goto done; } } else { if (is_del) { rv = nat44_ed_del_interface (sw_if_index, 0); } else { rv = nat44_ed_add_interface (sw_if_index, 0); } if (rv) { error = clib_error_return (0, "%s %U failed", is_del ? "del" : "add", format_vnet_sw_if_index_name, vnm, sw_if_index); goto done; } } } } done: unformat_free (line_input); vec_free (inside_sw_if_indices); vec_free (outside_sw_if_indices); return error; } static clib_error_t * nat44_show_interfaces_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; snat_interface_t *i; vnet_main_t *vnm = vnet_get_main (); vlib_cli_output (vm, "NAT44 interfaces:"); pool_foreach (i, sm->interfaces) { vlib_cli_output (vm, " %U %s", format_vnet_sw_if_index_name, vnm, i->sw_if_index, (nat_interface_is_inside(i) && nat_interface_is_outside(i)) ? "in out" : (nat_interface_is_inside(i) ? "in" : "out")); } pool_foreach (i, sm->output_feature_interfaces) { vlib_cli_output (vm, " %U output-feature %s", format_vnet_sw_if_index_name, vnm, i->sw_if_index, (nat_interface_is_inside(i) && nat_interface_is_outside(i)) ? "in out" : (nat_interface_is_inside(i) ? "in" : "out")); } return 0; } static clib_error_t * add_static_mapping_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; vnet_main_t *vnm = vnet_get_main (); clib_error_t *error = 0; int rv; nat_protocol_t proto = NAT_PROTOCOL_OTHER; ip4_address_t l_addr, e_addr, pool_addr; u32 l_port = 0, e_port = 0, vrf_id = ~0; u8 l_port_set = 0, e_port_set = 0; u32 sw_if_index, flags = 0; int is_add = 1; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "local %U %u", unformat_ip4_address, &l_addr, &l_port)) { l_port_set = 1; } else if (unformat (line_input, "local %U", unformat_ip4_address, &l_addr)) ; else if (unformat (line_input, "external %U %u", unformat_ip4_address, &e_addr, &e_port)) { e_port_set = 1; } else if (unformat (line_input, "external %U", unformat_ip4_address, &e_addr)) ; else if (unformat (line_input, "external %U %u", unformat_vnet_sw_interface, vnm, &sw_if_index, &e_port)) { flags |= NAT_SM_FLAG_SWITCH_ADDRESS; e_port_set = 1; } else if (unformat (line_input, "external %U", unformat_vnet_sw_interface, vnm, &sw_if_index)) { flags |= NAT_SM_FLAG_SWITCH_ADDRESS; } else if (unformat (line_input, "exact %U", unformat_ip4_address, &pool_addr)) { flags |= NAT_SM_FLAG_EXACT_ADDRESS; } else if (unformat (line_input, "vrf %u", &vrf_id)) ; else if (unformat (line_input, "%U", unformat_nat_protocol, &proto)) ; else if (unformat (line_input, "self-twice-nat")) { flags |= NAT_SM_FLAG_SELF_TWICE_NAT; } else if (unformat (line_input, "twice-nat")) { flags |= NAT_SM_FLAG_TWICE_NAT; } else if (unformat (line_input, "out2in-only")) { flags |= NAT_SM_FLAG_OUT2IN_ONLY; } else if (unformat (line_input, "del")) { is_add = 0; } else { error = clib_error_return (0, "unknown input: '%U'", format_unformat_error, line_input); goto done; } } if (l_port_set != e_port_set) { error = clib_error_return (0, "Either both ports are set or none."); goto done; } if (!l_port_set) { flags |= NAT_SM_FLAG_ADDR_ONLY; } else { l_port = clib_host_to_net_u16 (l_port); e_port = clib_host_to_net_u16 (e_port); } // TODO: specific pool_addr for both pool & twice nat pool ? if (is_add) { rv = nat44_ed_add_static_mapping (l_addr, e_addr, l_port, e_port, proto, vrf_id, sw_if_index, flags, pool_addr, 0); } else { rv = nat44_ed_del_static_mapping (l_addr, e_addr, l_port, e_port, proto, vrf_id, sw_if_index, flags); } // TODO: fix returns switch (rv) { case VNET_API_ERROR_INVALID_VALUE: error = clib_error_return (0, "External port already in use."); goto done; case VNET_API_ERROR_NO_SUCH_ENTRY: if (is_add) error = clib_error_return (0, "External address must be allocated."); else error = clib_error_return (0, "Mapping not exist."); goto done; case VNET_API_ERROR_NO_SUCH_FIB: error = clib_error_return (0, "No such VRF id."); goto done; case VNET_API_ERROR_VALUE_EXIST: error = clib_error_return (0, "Mapping already exist."); goto done; default: break; } done: unformat_free (line_input); return error; } // TODO: either delete this bullshit or update it static clib_error_t * add_identity_mapping_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; vnet_main_t *vnm = vnet_get_main (); clib_error_t *error = 0; int rv, is_add = 1, port_set = 0; u32 sw_if_index, port, flags, vrf_id = ~0; nat_protocol_t proto; ip4_address_t addr; flags = NAT_SM_FLAG_IDENTITY_NAT; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "%U", unformat_ip4_address, &addr)) ; else if (unformat (line_input, "external %U", unformat_vnet_sw_interface, vnm, &sw_if_index)) { flags |= NAT_SM_FLAG_SWITCH_ADDRESS; } else if (unformat (line_input, "vrf %u", &vrf_id)) ; else if (unformat (line_input, "%U %u", unformat_nat_protocol, &proto, &port)) { port_set = 1; } else if (unformat (line_input, "del")) { is_add = 0; } else { error = clib_error_return (0, "unknown input: '%U'", format_unformat_error, line_input); goto done; } } if (!port_set) { flags |= NAT_SM_FLAG_ADDR_ONLY; } else { port = clib_host_to_net_u16 (port); } if (is_add) { rv = nat44_ed_add_static_mapping (addr, addr, port, port, proto, vrf_id, sw_if_index, flags, addr, 0); } else { rv = nat44_ed_del_static_mapping (addr, addr, port, port, proto, vrf_id, sw_if_index, flags); } // TODO: fix returns switch (rv) { case VNET_API_ERROR_INVALID_VALUE: error = clib_error_return (0, "External port already in use."); goto done; case VNET_API_ERROR_NO_SUCH_ENTRY: if (is_add) error = clib_error_return (0, "External address must be allocated."); else error = clib_error_return (0, "Mapping not exist."); goto done; case VNET_API_ERROR_NO_SUCH_FIB: error = clib_error_return (0, "No such VRF id."); goto done; case VNET_API_ERROR_VALUE_EXIST: error = clib_error_return (0, "Mapping already exist."); goto done; default: break; } done: unformat_free (line_input); return error; } static clib_error_t * add_lb_static_mapping_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; ip4_address_t l_addr, e_addr; u32 l_port = 0, e_port = 0, vrf_id = 0, probability = 0, affinity = 0; u8 proto_set = 0; nat_protocol_t proto; nat44_lb_addr_port_t *locals = 0, local; int rv, is_add = 1; u32 flags = 0; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "local %U:%u probability %u", unformat_ip4_address, &l_addr, &l_port, &probability)) { clib_memset (&local, 0, sizeof (local)); local.addr = l_addr; local.port = (u16) l_port; local.probability = (u8) probability; vec_add1 (locals, local); } else if (unformat (line_input, "local %U:%u vrf %u probability %u", unformat_ip4_address, &l_addr, &l_port, &vrf_id, &probability)) { clib_memset (&local, 0, sizeof (local)); local.addr = l_addr; local.port = (u16) l_port; local.probability = (u8) probability; local.vrf_id = vrf_id; vec_add1 (locals, local); } else if (unformat (line_input, "external %U:%u", unformat_ip4_address, &e_addr, &e_port)) ; else if (unformat (line_input, "protocol %U", unformat_nat_protocol, &proto)) { proto_set = 1; } else if (unformat (line_input, "twice-nat")) { flags |= NAT_SM_FLAG_TWICE_NAT; } else if (unformat (line_input, "self-twice-nat")) { flags |= NAT_SM_FLAG_SELF_TWICE_NAT; } else if (unformat (line_input, "out2in-only")) { flags |= NAT_SM_FLAG_OUT2IN_ONLY; } else if (unformat (line_input, "del")) { is_add = 0; } else if (unformat (line_input, "affinity %u", &affinity)) ; else { error = clib_error_return (0, "unknown input: '%U'", format_unformat_error, line_input); goto done; } } if (vec_len (locals) < 2) { error = clib_error_return (0, "at least two local must be set"); goto done; } if (!proto_set) { error = clib_error_return (0, "missing protocol"); goto done; } if (is_add) { rv = nat44_ed_add_lb_static_mapping (e_addr, (u16) e_port, proto, locals, flags, 0, affinity); } else { rv = nat44_ed_del_lb_static_mapping (e_addr, (u16) e_port, proto, flags); } switch (rv) { case VNET_API_ERROR_INVALID_VALUE: error = clib_error_return (0, "External port already in use."); goto done; case VNET_API_ERROR_NO_SUCH_ENTRY: if (is_add) error = clib_error_return (0, "External address must be allocated."); else error = clib_error_return (0, "Mapping not exist."); goto done; case VNET_API_ERROR_VALUE_EXIST: error = clib_error_return (0, "Mapping already exist."); goto done; default: break; } done: unformat_free (line_input); vec_free (locals); return error; } static clib_error_t * add_lb_backend_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; ip4_address_t l_addr, e_addr; u32 l_port = 0, e_port = 0, vrf_id = 0, probability = 0; int is_add = 1; int rv; nat_protocol_t proto; u8 proto_set = 0; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "local %U:%u probability %u", unformat_ip4_address, &l_addr, &l_port, &probability)) ; else if (unformat (line_input, "local %U:%u vrf %u probability %u", unformat_ip4_address, &l_addr, &l_port, &vrf_id, &probability)) ; else if (unformat (line_input, "external %U:%u", unformat_ip4_address, &e_addr, &e_port)) ; else if (unformat (line_input, "protocol %U", unformat_nat_protocol, &proto)) proto_set = 1; else if (unformat (line_input, "del")) is_add = 0; else { error = clib_error_return (0, "unknown input: '%U'", format_unformat_error, line_input); goto done; } } if (!l_port || !e_port) { error = clib_error_return (0, "local or external must be set"); goto done; } if (!proto_set) { error = clib_error_return (0, "missing protocol"); goto done; } rv = nat44_ed_add_del_lb_static_mapping_local ( e_addr, (u16) e_port, l_addr, l_port, proto, vrf_id, probability, is_add); switch (rv) { case VNET_API_ERROR_INVALID_VALUE: error = clib_error_return (0, "External is not load-balancing static " "mapping."); goto done; case VNET_API_ERROR_NO_SUCH_ENTRY: error = clib_error_return (0, "Mapping or back-end not exist."); goto done; case VNET_API_ERROR_VALUE_EXIST: error = clib_error_return (0, "Back-end already exist."); goto done; case VNET_API_ERROR_UNSPECIFIED: error = clib_error_return (0, "At least two back-ends must remain"); goto done; default: break; } done: unformat_free (line_input); return error; } static clib_error_t * nat44_show_static_mappings_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; snat_static_mapping_t *m; snat_static_map_resolve_t *rp; vlib_cli_output (vm, "NAT44 static mappings:"); pool_foreach (m, sm->static_mappings) { vlib_cli_output (vm, " %U", format_snat_static_mapping, m); } vec_foreach (rp, sm->to_resolve) vlib_cli_output (vm, " %U", format_snat_static_map_to_resolve, rp); return 0; } static clib_error_t * snat_add_interface_address_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; snat_main_t *sm = &snat_main; clib_error_t *error = 0; int rv, is_del = 0; u8 twice_nat = 0; u32 sw_if_index; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "%U", unformat_vnet_sw_interface, sm->vnet_main, &sw_if_index)) ; else if (unformat (line_input, "twice-nat")) { twice_nat = 1; } else if (unformat (line_input, "del")) { is_del = 1; } else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (!is_del) { rv = nat44_ed_add_interface_address (sw_if_index, twice_nat); if (rv) { error = clib_error_return (0, "add address returned %d", rv); } } else { rv = nat44_ed_del_interface_address (sw_if_index, twice_nat); if (rv) { error = clib_error_return (0, "del address returned %d", rv); } } done: unformat_free (line_input); return error; } static clib_error_t * nat44_show_interface_address_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; vnet_main_t *vnm = vnet_get_main (); u32 *sw_if_index; vlib_cli_output (vm, "NAT44 pool address interfaces:"); vec_foreach (sw_if_index, sm->auto_add_sw_if_indices) { vlib_cli_output (vm, " %U", format_vnet_sw_if_index_name, vnm, *sw_if_index); } vlib_cli_output (vm, "NAT44 twice-nat pool address interfaces:"); vec_foreach (sw_if_index, sm->auto_add_sw_if_indices_twice_nat) { vlib_cli_output (vm, " %U", format_vnet_sw_if_index_name, vnm, *sw_if_index); } return 0; } static clib_error_t * nat44_show_sessions_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; snat_main_per_thread_data_t *tsm; snat_main_t *sm = &snat_main; int i = 0; if (!unformat_user (input, unformat_line_input, line_input)) goto print; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); break; } unformat_free (line_input); print: vlib_cli_output (vm, "NAT44 ED sessions:"); vec_foreach_index (i, sm->per_thread_data) { tsm = vec_elt_at_index (sm->per_thread_data, i); vlib_cli_output (vm, "-------- thread %d %s: %d sessions --------\n", i, vlib_worker_threads[i].name, pool_elts (tsm->sessions)); snat_session_t *s; pool_foreach (s, tsm->sessions) { vlib_cli_output (vm, " %U\n", format_snat_session, tsm, s); } } return error; } static clib_error_t * nat44_set_session_limit_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; u32 session_limit = 0, vrf_id = 0; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "%u", &session_limit)) ; else if (unformat (line_input, "vrf %u", &vrf_id)) ; else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (!session_limit) error = clib_error_return (0, "missing value of session limit"); else if (nat44_update_session_limit (session_limit, vrf_id)) error = clib_error_return (0, "nat44_set_session_limit failed"); done: unformat_free (line_input); return error; } static clib_error_t * nat44_del_session_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; unformat_input_t _line_input, *line_input = &_line_input; u32 port = 0, eh_port = 0, vrf_id = sm->outside_vrf_id; clib_error_t *error = 0; ip4_address_t addr, eh_addr; nat_protocol_t proto; int is_in = 0; int rv; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "%U:%u %U", unformat_ip4_address, &addr, &port, unformat_nat_protocol, &proto)) ; else if (unformat (line_input, "in")) { is_in = 1; vrf_id = sm->inside_vrf_id; } else if (unformat (line_input, "out")) { is_in = 0; vrf_id = sm->outside_vrf_id; } else if (unformat (line_input, "vrf %u", &vrf_id)) ; else if (unformat (line_input, "external-host %U:%u", unformat_ip4_address, &eh_addr, &eh_port)) ; else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } rv = nat44_ed_del_session (sm, &addr, clib_host_to_net_u16 (port), &eh_addr, clib_host_to_net_u16 (eh_port), nat_proto_to_ip_proto (proto), vrf_id, is_in); switch (rv) { case 0: break; default: error = clib_error_return (0, "nat44_del_session returned %d", rv); goto done; } done: unformat_free (line_input); return error; } static clib_error_t * snat_forwarding_set_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; u8 enable_set = 0, enable = 0; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (!enable_set) { enable_set = 1; if (unformat (line_input, "disable")) ; else if (unformat (line_input, "enable")) enable = 1; } else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (!enable_set) error = clib_error_return (0, "expected enable | disable"); else sm->forwarding_enabled = enable; done: unformat_free (line_input); return error; } static clib_error_t * set_timeout_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "udp %u", &sm->timeouts.udp)); else if (unformat (line_input, "tcp-established %u", &sm->timeouts.tcp.established)); else if (unformat (line_input, "tcp-transitory %u", &sm->timeouts.tcp.transitory)); else if (unformat (line_input, "icmp %u", &sm->timeouts.icmp)); else if (unformat (line_input, "reset")) nat_reset_timeouts (&sm->timeouts); else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } done: unformat_free (line_input); return error; } static clib_error_t * nat_show_timeouts_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { snat_main_t *sm = &snat_main; vlib_cli_output (vm, "udp timeout: %dsec", sm->timeouts.udp); vlib_cli_output (vm, "tcp-established timeout: %dsec", sm->timeouts.tcp.established); vlib_cli_output (vm, "tcp-transitory timeout: %dsec", sm->timeouts.tcp.transitory); vlib_cli_output (vm, "icmp timeout: %dsec", sm->timeouts.icmp); return 0; } static clib_error_t * set_frame_queue_nelts_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd) { unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; u32 frame_queue_nelts = 0; if (!unformat_user (input, unformat_line_input, line_input)) return clib_error_return (0, NAT44_ED_EXPECTED_ARGUMENT); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "%u", &frame_queue_nelts)) ; else { error = clib_error_return (0, "unknown input '%U'", format_unformat_error, line_input); goto done; } } if (!frame_queue_nelts) { error = clib_error_return (0, "frame_queue_nelts cannot be zero"); goto done; } if (nat44_ed_set_frame_queue_nelts (frame_queue_nelts) != 0) { error = clib_error_return (0, "snat_set_frame_queue_nelts failed"); goto done; } done: unformat_free (line_input); return error; } /*? * @cliexpar * @cliexstart{nat44} * Enable nat44 plugin * To enable nat44-ed, use: * vpp# nat44 enable * To disable nat44-ed, use: * vpp# nat44 disable * To enable nat44-ed static mapping with connection tracking, use: * vpp# nat44-ed enable static-mapping connection-tracking * To set inside-vrf outside-vrf, use: * vpp# nat44 enable inside-vrf outside-vrf * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_ed_enable_disable_command, static) = { .path = "nat44", .short_help = "nat44 ] [static-mapping-only " "connection-tracking] [inside-vrf ] " "[outside-vrf ]>|disable", .function = nat44_ed_enable_disable_command_fn, }; /*? * @cliexpar * @cliexstart{set snat workers} * Set NAT workers if 2 or more workers available, use: * vpp# set snat workers 0-2,5 * @cliexend ?*/ VLIB_CLI_COMMAND (set_workers_command, static) = { .path = "set nat workers", .function = set_workers_command_fn, .short_help = "set nat workers ", }; /*? * @cliexpar * @cliexstart{show nat workers} * Show NAT workers. * vpp# show nat workers: * 2 workers * vpp_wk_0 * vpp_wk_1 * @cliexend ?*/ VLIB_CLI_COMMAND (nat_show_workers_command, static) = { .path = "show nat workers", .short_help = "show nat workers", .function = nat_show_workers_commnad_fn, }; /*? * @cliexpar * @cliexstart{set nat timeout} * Set values of timeouts for NAT sessions (in seconds), use: * vpp# set nat timeout udp 120 tcp-established 7500 tcp-transitory 250 icmp 90 * To reset default values use: * vpp# set nat timeout reset * @cliexend ?*/ VLIB_CLI_COMMAND (set_timeout_command, static) = { .path = "set nat timeout", .function = set_timeout_command_fn, .short_help = "set nat timeout [udp | tcp-established " "tcp-transitory | icmp | reset]", }; /*? * @cliexpar * @cliexstart{show nat timeouts} * Show values of timeouts for NAT sessions. * vpp# show nat timeouts * udp timeout: 300sec * tcp-established timeout: 7440sec * tcp-transitory timeout: 240sec * icmp timeout: 60sec * @cliexend ?*/ VLIB_CLI_COMMAND (nat_show_timeouts_command, static) = { .path = "show nat timeouts", .short_help = "show nat timeouts", .function = nat_show_timeouts_command_fn, }; /*? * @cliexpar * @cliexstart{set nat frame-queue-nelts} * Set number of worker handoff frame queue elements. * @cliexend ?*/ VLIB_CLI_COMMAND (set_frame_queue_nelts_command, static) = { .path = "set nat frame-queue-nelts", .function = set_frame_queue_nelts_command_fn, .short_help = "set nat frame-queue-nelts ", }; /*? * @cliexpar * @cliexstart{nat set logging level} * To set NAT logging level use: * Set nat logging level * @cliexend ?*/ VLIB_CLI_COMMAND (snat_set_log_level_command, static) = { .path = "nat set logging level", .function = snat_set_log_level_command_fn, .short_help = "nat set logging level ", }; /*? * @cliexpar * @cliexstart{snat ipfix logging} * To enable NAT IPFIX logging use: * vpp# nat ipfix logging * To set IPFIX exporter use: * vpp# set ipfix exporter collector 10.10.10.3 src 10.10.10.1 * @cliexend ?*/ VLIB_CLI_COMMAND (snat_ipfix_logging_enable_disable_command, static) = { .path = "nat ipfix logging", .function = snat_ipfix_logging_enable_disable_command_fn, .short_help = "nat ipfix logging disable|] " "[src-port ]>", }; /*? * @cliexpar * @cliexstart{nat mss-clamping} * Set TCP MSS rewriting configuration * To enable TCP MSS rewriting use: * vpp# nat mss-clamping 1452 * To disbale TCP MSS rewriting use: * vpp# nat mss-clamping disable * @cliexend ?*/ VLIB_CLI_COMMAND (nat_set_mss_clamping_command, static) = { .path = "nat mss-clamping", .short_help = "nat mss-clamping |disable", .function = nat_set_mss_clamping_command_fn, }; /*? * @cliexpar * @cliexstart{show nat mss-clamping} * Show TCP MSS rewriting configuration * @cliexend ?*/ VLIB_CLI_COMMAND (nat_show_mss_clamping_command, static) = { .path = "show nat mss-clamping", .short_help = "show nat mss-clamping", .function = nat_show_mss_clamping_command_fn, }; /*? * @cliexpar * @cliexstart{show nat44 hash tables} * Show NAT44 hash tables * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_show_hash, static) = { .path = "show nat44 hash tables", .short_help = "show nat44 hash tables [detail|verbose]", .function = nat44_show_hash_command_fn, }; /*? * @cliexpar * @cliexstart{nat44 add address} * Add/delete NAT44 pool address. * To add NAT44 pool address use: * vpp# nat44 add address 172.16.1.3 * vpp# nat44 add address 172.16.2.2 - 172.16.2.24 * To add NAT44 pool address for specific tenant (identified by VRF id) use: * vpp# nat44 add address 172.16.1.3 tenant-vrf 10 * @cliexend ?*/ VLIB_CLI_COMMAND (add_address_command, static) = { .path = "nat44 add address", .short_help = "nat44 add address [- ] " "[tenant-vrf ] [twice-nat] [del]", .function = add_address_command_fn, }; /*? * @cliexpar * @cliexstart{show nat44 summary} * Show NAT44 summary * vpp# show nat44 summary * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_show_summary_command, static) = { .path = "show nat44 summary", .short_help = "show nat44 summary", .function = nat44_show_summary_command_fn, }; /*? * @cliexpar * @cliexstart{show nat44 addresses} * Show NAT44 pool addresses. * vpp# show nat44 addresses * NAT44 pool addresses: * 172.16.2.2 * tenant VRF independent * 10 busy udp ports * 0 busy tcp ports * 0 busy icmp ports * 172.16.1.3 * tenant VRF: 10 * 0 busy udp ports * 2 busy tcp ports * 0 busy icmp ports * NAT44 twice-nat pool addresses: * 10.20.30.72 * tenant VRF independent * 0 busy udp ports * 0 busy tcp ports * 0 busy icmp ports * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_show_addresses_command, static) = { .path = "show nat44 addresses", .short_help = "show nat44 addresses", .function = nat44_show_addresses_command_fn, }; /*? * @cliexpar * @cliexstart{set interface nat44} * Enable/disable NAT44 feature on the interface. * To enable NAT44 feature with local network interface use: * vpp# set interface nat44 in GigabitEthernet0/8/0 * To enable NAT44 feature with external network interface use: * vpp# set interface nat44 out GigabitEthernet0/a/0 * @cliexend ?*/ VLIB_CLI_COMMAND (set_interface_snat_command, static) = { .path = "set interface nat44", .function = snat_feature_command_fn, .short_help = "set interface nat44 in out [output-feature] " "[del]", }; /*? * @cliexpar * @cliexstart{show nat44 interfaces} * Show interfaces with NAT44 feature. * vpp# show nat44 interfaces * NAT44 interfaces: * GigabitEthernet0/8/0 in * GigabitEthernet0/a/0 out * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_show_interfaces_command, static) = { .path = "show nat44 interfaces", .short_help = "show nat44 interfaces", .function = nat44_show_interfaces_command_fn, }; /*? * @cliexpar * @cliexstart{nat44 add static mapping} * Static mapping allows hosts on the external network to initiate connection * to to the local network host. * To create static mapping between local host address 10.0.0.3 port 6303 and * external address 4.4.4.4 port 3606 for TCP protocol use: * vpp# nat44 add static mapping tcp local 10.0.0.3 6303 external 4.4.4.4 3606 * If not runnig "static mapping only" NAT plugin mode use before: * vpp# nat44 add address 4.4.4.4 * To create address only static mapping between local and external address use: * vpp# nat44 add static mapping local 10.0.0.3 external 4.4.4.4 * To create ICMP static mapping between local and external with ICMP echo * identifier 10 use: * vpp# nat44 add static mapping icmp local 10.0.0.3 10 external 4.4.4.4 10 * To force use of specific pool address, vrf independent * vpp# nat44 add static mapping local 10.0.0.2 1234 external 10.0.2.2 1234 twice-nat exact 10.0.1.2 * @cliexend ?*/ VLIB_CLI_COMMAND (add_static_mapping_command, static) = { .path = "nat44 add static mapping", .function = add_static_mapping_command_fn, .short_help = "nat44 add static mapping tcp|udp|icmp local [] " "external [] [vrf ] [twice-nat|self-twice-nat] " "[out2in-only] [exact ] [del]", }; /*? * @cliexpar * @cliexstart{nat44 add identity mapping} * Identity mapping translate an IP address to itself. * To create identity mapping for address 10.0.0.3 port 6303 for TCP protocol * use: * vpp# nat44 add identity mapping 10.0.0.3 tcp 6303 * To create identity mapping for address 10.0.0.3 use: * vpp# nat44 add identity mapping 10.0.0.3 * To create identity mapping for DHCP addressed interface use: * vpp# nat44 add identity mapping external GigabitEthernet0/a/0 tcp 3606 * @cliexend ?*/ VLIB_CLI_COMMAND (add_identity_mapping_command, static) = { .path = "nat44 add identity mapping", .function = add_identity_mapping_command_fn, .short_help = "nat44 add identity mapping |external " "[ ] [vrf ] [del]", }; /*? * @cliexpar * @cliexstart{nat44 add load-balancing static mapping} * Service load balancing using NAT44 * To add static mapping with load balancing for service with external IP * address 1.2.3.4 and TCP port 80 and mapped to 2 local servers * 10.100.10.10:8080 and 10.100.10.20:8080 with probability 80% resp. 20% use: * vpp# nat44 add load-balancing static mapping protocol tcp external 1.2.3.4:80 local 10.100.10.10:8080 probability 80 local 10.100.10.20:8080 probability 20 * @cliexend ?*/ VLIB_CLI_COMMAND (add_lb_static_mapping_command, static) = { .path = "nat44 add load-balancing static mapping", .function = add_lb_static_mapping_command_fn, .short_help = "nat44 add load-balancing static mapping protocol tcp|udp " "external : local : [vrf ] " "probability [twice-nat|self-twice-nat] [out2in-only] " "[affinity ] [del]", }; /*? * @cliexpar * @cliexstart{nat44 add load-balancing static mapping} * Modify service load balancing using NAT44 * To add new back-end server 10.100.10.30:8080 for service load balancing * static mapping with external IP address 1.2.3.4 and TCP port 80 use: * vpp# nat44 add load-balancing back-end protocol tcp external 1.2.3.4:80 local 10.100.10.30:8080 probability 25 * @cliexend ?*/ VLIB_CLI_COMMAND (add_lb_backend_command, static) = { .path = "nat44 add load-balancing back-end", .function = add_lb_backend_command_fn, .short_help = "nat44 add load-balancing back-end protocol tcp|udp " "external : local : [vrf ] " "probability [del]", }; /*? * @cliexpar * @cliexstart{show nat44 static mappings} * Show NAT44 static mappings. * vpp# show nat44 static mappings * NAT44 static mappings: * local 10.0.0.3 external 4.4.4.4 vrf 0 * tcp local 192.168.0.4:6303 external 4.4.4.3:3606 vrf 0 * tcp vrf 0 external 1.2.3.4:80 out2in-only * local 10.100.10.10:8080 probability 80 * local 10.100.10.20:8080 probability 20 * tcp local 10.100.3.8:8080 external 169.10.10.1:80 vrf 0 twice-nat * tcp local 10.0.0.10:3603 external GigabitEthernet0/a/0:6306 vrf 10 * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_show_static_mappings_command, static) = { .path = "show nat44 static mappings", .short_help = "show nat44 static mappings", .function = nat44_show_static_mappings_command_fn, }; /*? * @cliexpar * @cliexstart{nat44 add interface address} * Use NAT44 pool address from specific interfce * To add NAT44 pool address from specific interface use: * vpp# nat44 add interface address GigabitEthernet0/8/0 * @cliexend ?*/ VLIB_CLI_COMMAND (snat_add_interface_address_command, static) = { .path = "nat44 add interface address", .short_help = "nat44 add interface address [twice-nat] [del]", .function = snat_add_interface_address_command_fn, }; /*? * @cliexpar * @cliexstart{show nat44 interface address} * Show NAT44 pool address interfaces * vpp# show nat44 interface address * NAT44 pool address interfaces: * GigabitEthernet0/a/0 * NAT44 twice-nat pool address interfaces: * GigabitEthernet0/8/0 * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_show_interface_address_command, static) = { .path = "show nat44 interface address", .short_help = "show nat44 interface address", .function = nat44_show_interface_address_command_fn, }; /*? * @cliexpar * @cliexstart{show nat44 sessions} * Show NAT44 sessions. * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_show_sessions_command, static) = { .path = "show nat44 sessions", .short_help = "show nat44 sessions", .function = nat44_show_sessions_command_fn, }; /*? * @cliexpar * @cliexstart{set nat44 session limit} * Set NAT44 session limit. * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_set_session_limit_command, static) = { .path = "set nat44 session limit", .short_help = "set nat44 session limit [vrf ]", .function = nat44_set_session_limit_command_fn, }; /*? * @cliexpar * @cliexstart{nat44 del session} * To administratively delete NAT44 session by inside address and port use: * vpp# nat44 del session in 10.0.0.3:6303 tcp * To administratively delete NAT44 session by outside address and port use: * vpp# nat44 del session out 1.0.0.3:6033 udp * @cliexend ?*/ VLIB_CLI_COMMAND (nat44_del_session_command, static) = { .path = "nat44 del session", .short_help = "nat44 del session in|out : tcp|udp|icmp [vrf ] [external-host :]", .function = nat44_del_session_command_fn, }; /*? * @cliexpar * @cliexstart{nat44 forwarding} * Enable or disable forwarding * Forward packets which don't match existing translation * or static mapping instead of dropping them. * To enable forwarding, use: * vpp# nat44 forwarding enable * To disable forwarding, use: * vpp# nat44 forwarding disable * @cliexend ?*/ VLIB_CLI_COMMAND (snat_forwarding_set_command, static) = { .path = "nat44 forwarding", .short_help = "nat44 forwarding enable|disable", .function = snat_forwarding_set_command_fn, }; /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */