diff options
Diffstat (limited to 'src/plugins/snat/snat.c')
-rw-r--r-- | src/plugins/snat/snat.c | 2842 |
1 files changed, 0 insertions, 2842 deletions
diff --git a/src/plugins/snat/snat.c b/src/plugins/snat/snat.c deleted file mode 100644 index 315cec8a65b..00000000000 --- a/src/plugins/snat/snat.c +++ /dev/null @@ -1,2842 +0,0 @@ -/* - * snat.c - simple nat plugin - * - * Copyright (c) 2016 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. - */ - -#include <vnet/vnet.h> -#include <vnet/ip/ip.h> -#include <vnet/ip/ip4.h> -#include <vnet/plugin/plugin.h> -#include <snat/snat.h> -#include <snat/snat_ipfix_logging.h> -#include <snat/snat_det.h> -#include <snat/nat64.h> -#include <vnet/fib/fib_table.h> -#include <vnet/fib/ip4_fib.h> - -#include <vpp/app/version.h> - -snat_main_t snat_main; - - -/* Hook up input features */ -VNET_FEATURE_INIT (ip4_snat_in2out, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-in2out", - .runs_before = VNET_FEATURES ("snat-out2in"), -}; -VNET_FEATURE_INIT (ip4_snat_out2in, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-out2in", - .runs_before = VNET_FEATURES ("ip4-lookup"), -}; -VNET_FEATURE_INIT (ip4_snat_det_in2out, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-det-in2out", - .runs_before = VNET_FEATURES ("snat-det-out2in"), -}; -VNET_FEATURE_INIT (ip4_snat_det_out2in, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-det-out2in", - .runs_before = VNET_FEATURES ("ip4-lookup"), -}; -VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-in2out-worker-handoff", - .runs_before = VNET_FEATURES ("snat-out2in-worker-handoff"), -}; -VNET_FEATURE_INIT (ip4_snat_out2in_worker_handoff, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-out2in-worker-handoff", - .runs_before = VNET_FEATURES ("ip4-lookup"), -}; -VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-in2out-fast", - .runs_before = VNET_FEATURES ("snat-out2in-fast"), -}; -VNET_FEATURE_INIT (ip4_snat_out2in_fast, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-out2in-fast", - .runs_before = VNET_FEATURES ("ip4-lookup"), -}; -VNET_FEATURE_INIT (ip4_snat_hairpin_dst, static) = { - .arc_name = "ip4-unicast", - .node_name = "snat-hairpin-dst", - .runs_before = VNET_FEATURES ("ip4-lookup"), -}; - -/* Hook up output features */ -VNET_FEATURE_INIT (ip4_snat_in2out_output, static) = { - .arc_name = "ip4-output", - .node_name = "snat-in2out-output", - .runs_before = VNET_FEATURES ("interface-output"), -}; -VNET_FEATURE_INIT (ip4_snat_in2out_output_worker_handoff, static) = { - .arc_name = "ip4-output", - .node_name = "snat-in2out-output-worker-handoff", - .runs_before = VNET_FEATURES ("interface-output"), -}; -VNET_FEATURE_INIT (ip4_snat_hairpin_src, static) = { - .arc_name = "ip4-output", - .node_name = "snat-hairpin-src", - .runs_before = VNET_FEATURES ("interface-output"), -}; - - -/* *INDENT-OFF* */ -VLIB_PLUGIN_REGISTER () = { - .version = VPP_BUILD_VER, - .description = "Network Address Translation", -}; -/* *INDENT-ON* */ - -/** - * @brief Add/del NAT address to FIB. - * - * Add the external NAT address to the FIB as receive entries. This ensures - * that VPP will reply to ARP for this address and we don't need to enable - * proxy ARP on the outside interface. - * - * @param addr IPv4 address. - * @param plen address prefix length - * @param sw_if_index Interface. - * @param is_add If 0 delete, otherwise add. - */ -void -snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index, - int is_add) -{ - fib_prefix_t prefix = { - .fp_len = p_len, - .fp_proto = FIB_PROTOCOL_IP4, - .fp_addr = { - .ip4.as_u32 = addr->as_u32, - }, - }; - u32 fib_index = ip4_fib_table_get_index_for_sw_if_index(sw_if_index); - - if (is_add) - fib_table_entry_update_one_path(fib_index, - &prefix, - FIB_SOURCE_PLUGIN_HI, - (FIB_ENTRY_FLAG_CONNECTED | - FIB_ENTRY_FLAG_LOCAL | - FIB_ENTRY_FLAG_EXCLUSIVE), - DPO_PROTO_IP4, - NULL, - sw_if_index, - ~0, - 1, - NULL, - FIB_ROUTE_PATH_FLAG_NONE); - else - fib_table_entry_delete(fib_index, - &prefix, - FIB_SOURCE_PLUGIN_HI); -} - -void snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id) -{ - snat_address_t * ap; - snat_interface_t *i; - - if (vrf_id != ~0) - sm->vrf_mode = 1; - - /* Check if address already exists */ - vec_foreach (ap, sm->addresses) - { - if (ap->addr.as_u32 == addr->as_u32) - return; - } - - vec_add2 (sm->addresses, ap, 1); - ap->addr = *addr; - if (vrf_id != ~0) - ap->fib_index = - fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id); - else - ap->fib_index = ~0; -#define _(N, i, n, s) \ - clib_bitmap_alloc (ap->busy_##n##_port_bitmap, 65535); - foreach_snat_protocol -#undef _ - - /* Add external address to FIB */ - pool_foreach (i, sm->interfaces, - ({ - if (i->is_inside) - continue; - - snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1); - break; - })); - pool_foreach (i, sm->output_feature_interfaces, - ({ - if (i->is_inside) - continue; - - snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1); - break; - })); -} - -static int is_snat_address_used_in_static_mapping (snat_main_t *sm, - ip4_address_t addr) -{ - snat_static_mapping_t *m; - pool_foreach (m, sm->static_mappings, - ({ - if (m->external_addr.as_u32 == addr.as_u32) - return 1; - })); - - return 0; -} - -void increment_v4_address (ip4_address_t * a) -{ - u32 v; - - v = clib_net_to_host_u32(a->as_u32) + 1; - a->as_u32 = clib_host_to_net_u32(v); -} - -static void -snat_add_static_mapping_when_resolved (snat_main_t * sm, - ip4_address_t l_addr, - u16 l_port, - u32 sw_if_index, - u16 e_port, - u32 vrf_id, - snat_protocol_t proto, - int addr_only, - int is_add) -{ - snat_static_map_resolve_t *rp; - - vec_add2 (sm->to_resolve, rp, 1); - rp->l_addr.as_u32 = l_addr.as_u32; - rp->l_port = l_port; - rp->sw_if_index = sw_if_index; - rp->e_port = e_port; - rp->vrf_id = vrf_id; - rp->proto = proto; - rp->addr_only = addr_only; - rp->is_add = is_add; -} - -/** - * @brief Add static mapping. - * - * Create static mapping between local addr+port and external addr+port. - * - * @param l_addr Local IPv4 address. - * @param e_addr External IPv4 address. - * @param l_port Local port number. - * @param e_port External port number. - * @param vrf_id VRF ID. - * @param addr_only If 0 address port and pair mapping, otherwise address only. - * @param sw_if_index External port instead of specific IP address. - * @param is_add If 0 delete static mapping, otherwise add. - * - * @returns - */ -int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, - u16 l_port, u16 e_port, u32 vrf_id, int addr_only, - u32 sw_if_index, snat_protocol_t proto, int is_add) -{ - snat_main_t * sm = &snat_main; - snat_static_mapping_t *m; - snat_session_key_t m_key; - clib_bihash_kv_8_8_t kv, value; - snat_address_t *a = 0; - u32 fib_index = ~0; - uword * p; - snat_interface_t *interface; - int i; - - /* If the external address is a specific interface address */ - if (sw_if_index != ~0) - { - ip4_address_t * first_int_addr; - - /* Might be already set... */ - first_int_addr = ip4_interface_first_address - (sm->ip4_main, sw_if_index, 0 /* just want the address*/); - - /* DHCP resolution required? */ - if (first_int_addr == 0) - { - snat_add_static_mapping_when_resolved - (sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto, - addr_only, is_add); - return 0; - } - else - e_addr.as_u32 = first_int_addr->as_u32; - } - - m_key.addr = e_addr; - m_key.port = addr_only ? 0 : e_port; - m_key.protocol = addr_only ? 0 : proto; - m_key.fib_index = sm->outside_fib_index; - kv.key = m_key.as_u64; - if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value)) - m = 0; - else - m = pool_elt_at_index (sm->static_mappings, value.value); - - if (is_add) - { - if (m) - return VNET_API_ERROR_VALUE_EXIST; - - /* Convert VRF id to FIB index */ - if (vrf_id != ~0) - { - p = hash_get (sm->ip4_main->fib_index_by_table_id, vrf_id); - if (!p) - return VNET_API_ERROR_NO_SUCH_FIB; - fib_index = p[0]; - } - /* If not specified use inside VRF id from SNAT plugin startup config */ - else - { - fib_index = sm->inside_fib_index; - vrf_id = sm->inside_vrf_id; - } - - /* Find external address in allocated addresses and reserve port for - address and port pair mapping when dynamic translations enabled */ - if (!addr_only && !(sm->static_mapping_only)) - { - for (i = 0; i < vec_len (sm->addresses); i++) - { - if (sm->addresses[i].addr.as_u32 == e_addr.as_u32) - { - a = sm->addresses + i; - /* External port must be unused */ - switch (proto) - { -#define _(N, j, n, s) \ - case SNAT_PROTOCOL_##N: \ - if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, e_port)) \ - return VNET_API_ERROR_INVALID_VALUE; \ - clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 1); \ - if (e_port > 1024) \ - a->busy_##n##_ports++; \ - break; - foreach_snat_protocol -#undef _ - default: - clib_warning("unknown_protocol"); - return VNET_API_ERROR_INVALID_VALUE_2; - } - break; - } - } - /* External address must be allocated */ - if (!a) - return VNET_API_ERROR_NO_SUCH_ENTRY; - } - - pool_get (sm->static_mappings, m); - memset (m, 0, sizeof (*m)); - m->local_addr = l_addr; - m->external_addr = e_addr; - m->addr_only = addr_only; - m->vrf_id = vrf_id; - m->fib_index = fib_index; - if (!addr_only) - { - m->local_port = l_port; - m->external_port = e_port; - m->proto = proto; - } - - m_key.addr = m->local_addr; - m_key.port = m->local_port; - m_key.protocol = m->proto; - m_key.fib_index = m->fib_index; - kv.key = m_key.as_u64; - kv.value = m - sm->static_mappings; - clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 1); - - m_key.addr = m->external_addr; - m_key.port = m->external_port; - m_key.fib_index = sm->outside_fib_index; - kv.key = m_key.as_u64; - kv.value = m - sm->static_mappings; - clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 1); - - /* Assign worker */ - if (sm->workers) - { - snat_user_key_t w_key0; - snat_worker_key_t w_key1; - - w_key0.addr = m->local_addr; - w_key0.fib_index = m->fib_index; - kv.key = w_key0.as_u64; - - if (clib_bihash_search_8_8 (&sm->worker_by_in, &kv, &value)) - { - kv.value = sm->first_worker_index + - sm->workers[sm->next_worker++ % vec_len (sm->workers)]; - - clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv, 1); - } - else - { - kv.value = value.value; - } - - w_key1.addr = m->external_addr; - w_key1.port = clib_host_to_net_u16 (m->external_port); - w_key1.fib_index = sm->outside_fib_index; - kv.key = w_key1.as_u64; - clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv, 1); - } - } - else - { - if (!m) - return VNET_API_ERROR_NO_SUCH_ENTRY; - - /* Free external address port */ - if (!addr_only && !(sm->static_mapping_only)) - { - for (i = 0; i < vec_len (sm->addresses); i++) - { - if (sm->addresses[i].addr.as_u32 == e_addr.as_u32) - { - a = sm->addresses + i; - switch (proto) - { -#define _(N, j, n, s) \ - case SNAT_PROTOCOL_##N: \ - clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, e_port, 0); \ - if (e_port > 1024) \ - a->busy_##n##_ports--; \ - break; - foreach_snat_protocol -#undef _ - default: - clib_warning("unknown_protocol"); - return VNET_API_ERROR_INVALID_VALUE_2; - } - break; - } - } - } - - m_key.addr = m->local_addr; - m_key.port = m->local_port; - m_key.protocol = m->proto; - m_key.fib_index = m->fib_index; - kv.key = m_key.as_u64; - clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 0); - - m_key.addr = m->external_addr; - m_key.port = m->external_port; - m_key.fib_index = sm->outside_fib_index; - kv.key = m_key.as_u64; - clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 0); - - /* Delete session(s) for static mapping if exist */ - if (!(sm->static_mapping_only) || - (sm->static_mapping_only && sm->static_mapping_connection_tracking)) - { - snat_user_key_t u_key; - snat_user_t *u; - dlist_elt_t * head, * elt; - u32 elt_index, head_index, del_elt_index; - u32 ses_index; - u64 user_index; - snat_session_t * s; - snat_main_per_thread_data_t *tsm; - - u_key.addr = m->local_addr; - u_key.fib_index = m->fib_index; - kv.key = u_key.as_u64; - if (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value)) - { - user_index = value.value; - if (!clib_bihash_search_8_8 (&sm->worker_by_in, &kv, &value)) - tsm = vec_elt_at_index (sm->per_thread_data, value.value); - else - tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); - u = pool_elt_at_index (tsm->users, user_index); - if (u->nstaticsessions) - { - head_index = u->sessions_per_user_list_head_index; - head = pool_elt_at_index (tsm->list_pool, head_index); - elt_index = head->next; - elt = pool_elt_at_index (tsm->list_pool, elt_index); - ses_index = elt->value; - while (ses_index != ~0) - { - s = pool_elt_at_index (tsm->sessions, ses_index); - del_elt_index = elt_index; - elt_index = elt->next; - elt = pool_elt_at_index (tsm->list_pool, elt_index); - ses_index = elt->value; - - if (!addr_only) - { - if ((s->out2in.addr.as_u32 != e_addr.as_u32) && - (clib_net_to_host_u16 (s->out2in.port) != e_port)) - continue; - } - - if (snat_is_unk_proto_session (s)) - { - clib_bihash_kv_16_8_t up_kv; - snat_unk_proto_ses_key_t up_key; - up_key.l_addr = s->in2out.addr; - up_key.r_addr = s->ext_host_addr; - up_key.fib_index = s->in2out.fib_index; - up_key.proto = s->in2out.port; - up_key.rsvd[0] = up_key.rsvd[1] = up_key.rsvd[2] = 0; - up_kv.key[0] = up_key.as_u64[0]; - up_kv.key[1] = up_key.as_u64[1]; - if (clib_bihash_add_del_16_8 (&sm->in2out_unk_proto, - &up_kv, 0)) - clib_warning ("in2out key del failed"); - - up_key.l_addr = s->out2in.addr; - up_key.fib_index = s->out2in.fib_index; - up_kv.key[0] = up_key.as_u64[0]; - up_kv.key[1] = up_key.as_u64[1]; - if (clib_bihash_add_del_16_8 (&sm->out2in_unk_proto, - &up_kv, 0)) - clib_warning ("out2in key del failed"); - - goto delete; - } - /* log NAT event */ - snat_ipfix_logging_nat44_ses_delete(s->in2out.addr.as_u32, - s->out2in.addr.as_u32, - s->in2out.protocol, - s->in2out.port, - s->out2in.port, - s->in2out.fib_index); - - value.key = s->in2out.as_u64; - if (clib_bihash_add_del_8_8 (&sm->in2out, &value, 0)) - clib_warning ("in2out key del failed"); - value.key = s->out2in.as_u64; - if (clib_bihash_add_del_8_8 (&sm->out2in, &value, 0)) - clib_warning ("out2in key del failed"); -delete: - pool_put (tsm->sessions, s); - - clib_dlist_remove (tsm->list_pool, del_elt_index); - pool_put_index (tsm->list_pool, del_elt_index); - u->nstaticsessions--; - - if (!addr_only) - break; - } - if (addr_only) - { - pool_put (tsm->users, u); - clib_bihash_add_del_8_8 (&sm->user_hash, &kv, 0); - } - } - } - } - - /* Delete static mapping from pool */ - pool_put (sm->static_mappings, m); - } - - if (!addr_only) - return 0; - - /* Add/delete external address to FIB */ - pool_foreach (interface, sm->interfaces, - ({ - if (interface->is_inside) - continue; - - snat_add_del_addr_to_fib(&e_addr, 32, interface->sw_if_index, is_add); - break; - })); - pool_foreach (interface, sm->output_feature_interfaces, - ({ - if (interface->is_inside) - continue; - - snat_add_del_addr_to_fib(&e_addr, 32, interface->sw_if_index, is_add); - break; - })); - - return 0; -} - -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; - snat_interface_t *interface; - 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, - m->proto, 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; - } - } - - if (a->fib_index != ~0) - fib_table_unlock(a->fib_index, FIB_PROTOCOL_IP4); - - /* Delete sessions using address */ - if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports) - { - vec_foreach (tsm, sm->per_thread_data) - { - pool_foreach (ses, tsm->sessions, ({ - if (ses->out2in.addr.as_u32 == addr.as_u32) - { - if (snat_is_unk_proto_session (ses)) - { - clib_bihash_kv_16_8_t up_kv; - snat_unk_proto_ses_key_t up_key; - up_key.l_addr = ses->in2out.addr; - up_key.r_addr = ses->ext_host_addr; - up_key.fib_index = ses->in2out.fib_index; - up_key.proto = ses->in2out.port; - up_key.rsvd[0] = up_key.rsvd[1] = up_key.rsvd[2] = 0; - up_kv.key[0] = up_key.as_u64[0]; - up_kv.key[1] = up_key.as_u64[1]; - if (clib_bihash_add_del_16_8 (&sm->in2out_unk_proto, - &up_kv, 0)) - clib_warning ("in2out key del failed"); - - up_key.l_addr = ses->out2in.addr; - up_key.fib_index = ses->out2in.fib_index; - up_kv.key[0] = up_key.as_u64[0]; - up_kv.key[1] = up_key.as_u64[1]; - if (clib_bihash_add_del_16_8 (&sm->out2in_unk_proto, - &up_kv, 0)) - clib_warning ("out2in key del failed"); - } - else - { - /* 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); - 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); - } - vec_add1 (ses_to_be_removed, ses - tsm->sessions); - 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); - - /* Delete external address from FIB */ - pool_foreach (interface, sm->interfaces, - ({ - if (interface->is_inside) - continue; - - snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0); - break; - })); - pool_foreach (interface, sm->output_feature_interfaces, - ({ - if (interface->is_inside) - continue; - - snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0); - break; - })); - - return 0; -} - -int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del) -{ - snat_main_t *sm = &snat_main; - snat_interface_t *i; - const char * feature_name; - snat_address_t * ap; - snat_static_mapping_t * m; - snat_det_map_t * dm; - - if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking)) - feature_name = is_inside ? "snat-in2out-fast" : "snat-out2in-fast"; - else - { - if (sm->num_workers > 1 && !sm->deterministic) - feature_name = is_inside ? "snat-in2out-worker-handoff" : "snat-out2in-worker-handoff"; - else if (sm->deterministic) - feature_name = is_inside ? "snat-det-in2out" : "snat-det-out2in"; - else - feature_name = is_inside ? "snat-in2out" : "snat-out2in"; - } - - vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, - !is_del, 0, 0); - - if (sm->fq_in2out_index == ~0 && !sm->deterministic && sm->num_workers > 1) - sm->fq_in2out_index = vlib_frame_queue_main_init (sm->in2out_node_index, 0); - - if (sm->fq_out2in_index == ~0 && !sm->deterministic && sm->num_workers > 1) - sm->fq_out2in_index = vlib_frame_queue_main_init (sm->out2in_node_index, 0); - - pool_foreach (i, sm->interfaces, - ({ - if (i->sw_if_index == sw_if_index) - { - if (is_del) - pool_put (sm->interfaces, i); - else - return VNET_API_ERROR_VALUE_EXIST; - - goto fib; - } - })); - - if (is_del) - return VNET_API_ERROR_NO_SUCH_ENTRY; - - pool_get (sm->interfaces, i); - i->sw_if_index = sw_if_index; - i->is_inside = is_inside; - - /* Add/delete external addresses to FIB */ -fib: - if (is_inside) - return 0; - - vec_foreach (ap, sm->addresses) - snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, !is_del); - - pool_foreach (m, sm->static_mappings, - ({ - if (!(m->addr_only)) - continue; - - snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del); - })); - - pool_foreach (dm, sm->det_maps, - ({ - snat_add_del_addr_to_fib(&dm->out_addr, dm->out_plen, sw_if_index, !is_del); - })); - - return 0; -} - -int snat_interface_add_del_output_feature (u32 sw_if_index, - u8 is_inside, - int is_del) -{ - snat_main_t *sm = &snat_main; - snat_interface_t *i; - snat_address_t * ap; - snat_static_mapping_t * m; - - if (sm->deterministic || - (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))) - return VNET_API_ERROR_UNSUPPORTED; - - if (is_inside) - { - vnet_feature_enable_disable ("ip4-unicast", "snat-hairpin-dst", - sw_if_index, !is_del, 0, 0); - vnet_feature_enable_disable ("ip4-output", "snat-hairpin-src", - sw_if_index, !is_del, 0, 0); - goto fq; - } - - if (sm->num_workers > 1) - { - vnet_feature_enable_disable ("ip4-unicast", "snat-out2in-worker-handoff", - sw_if_index, !is_del, 0, 0); - vnet_feature_enable_disable ("ip4-output", - "snat-in2out-output-worker-handoff", - sw_if_index, !is_del, 0, 0); - } - else - { - vnet_feature_enable_disable ("ip4-unicast", "snat-out2in", sw_if_index, - !is_del, 0, 0); - vnet_feature_enable_disable ("ip4-output", "snat-in2out-output", - sw_if_index, !is_del, 0, 0); - } - -fq: - if (sm->fq_in2out_output_index == ~0 && sm->num_workers > 1) - sm->fq_in2out_output_index = - vlib_frame_queue_main_init (sm->in2out_output_node_index, 0); - - if (sm->fq_out2in_index == ~0 && sm->num_workers > 1) - sm->fq_out2in_index = vlib_frame_queue_main_init (sm->out2in_node_index, 0); - - pool_foreach (i, sm->output_feature_interfaces, - ({ - if (i->sw_if_index == sw_if_index) - { - if (is_del) - pool_put (sm->output_feature_interfaces, i); - else - return VNET_API_ERROR_VALUE_EXIST; - - goto fib; - } - })); - - if (is_del) - return VNET_API_ERROR_NO_SUCH_ENTRY; - - pool_get (sm->output_feature_interfaces, i); - i->sw_if_index = sw_if_index; - i->is_inside = is_inside; - - /* Add/delete external addresses to FIB */ -fib: - if (is_inside) - return 0; - - vec_foreach (ap, sm->addresses) - snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, !is_del); - - pool_foreach (m, sm->static_mappings, - ({ - if (!(m->addr_only)) - continue; - - snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del); - })); - - return 0; -} - -int snat_set_workers (uword * bitmap) -{ - snat_main_t *sm = &snat_main; - int i, j = 0; - - if (sm->num_workers < 2) - return VNET_API_ERROR_FEATURE_DISABLED; - - if (clib_bitmap_last_set (bitmap) >= sm->num_workers) - return VNET_API_ERROR_INVALID_WORKER; - - vec_free (sm->workers); - clib_bitmap_foreach (i, bitmap, - ({ - vec_add1(sm->workers, i); - sm->per_thread_data[i].snat_thread_index = j; - j++; - })); - - sm->port_per_thread = (0xffff - 1024) / _vec_len (sm->workers); - sm->num_snat_thread = _vec_len (sm->workers); - - return 0; -} - - -static void -snat_ip4_add_del_interface_address_cb (ip4_main_t * im, - uword opaque, - u32 sw_if_index, - ip4_address_t * address, - u32 address_length, - u32 if_address_index, - u32 is_delete); - -static clib_error_t * snat_init (vlib_main_t * vm) -{ - snat_main_t * sm = &snat_main; - clib_error_t * error = 0; - ip4_main_t * im = &ip4_main; - ip_lookup_main_t * lm = &im->lookup_main; - uword *p; - vlib_thread_registration_t *tr; - vlib_thread_main_t *tm = vlib_get_thread_main (); - uword *bitmap = 0; - u32 i; - ip4_add_del_interface_address_callback_t cb4; - - sm->vlib_main = vm; - sm->vnet_main = vnet_get_main(); - sm->ip4_main = im; - sm->ip4_lookup_main = lm; - sm->api_main = &api_main; - sm->first_worker_index = 0; - sm->next_worker = 0; - sm->num_workers = 0; - sm->num_snat_thread = 1; - sm->workers = 0; - sm->port_per_thread = 0xffff - 1024; - sm->fq_in2out_index = ~0; - sm->fq_out2in_index = ~0; - sm->udp_timeout = SNAT_UDP_TIMEOUT; - sm->tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT; - sm->tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT; - sm->icmp_timeout = SNAT_ICMP_TIMEOUT; - - p = hash_get_mem (tm->thread_registrations_by_name, "workers"); - if (p) - { - tr = (vlib_thread_registration_t *) p[0]; - if (tr) - { - sm->num_workers = tr->count; - sm->first_worker_index = tr->first_index; - } - } - - vec_validate (sm->per_thread_data, tm->n_vlib_mains - 1); - - /* Use all available workers by default */ - if (sm->num_workers > 1) - { - for (i=0; i < sm->num_workers; i++) - bitmap = clib_bitmap_set (bitmap, i, 1); - snat_set_workers(bitmap); - clib_bitmap_free (bitmap); - } - else - { - sm->per_thread_data[0].snat_thread_index = 0; - } - - error = snat_api_init(vm, sm); - if (error) - return error; - - /* Set up the interface address add/del callback */ - cb4.function = snat_ip4_add_del_interface_address_cb; - cb4.function_opaque = 0; - - vec_add1 (im->add_del_interface_address_callbacks, cb4); - - /* Init IPFIX logging */ - snat_ipfix_logging_init(vm); - - error = nat64_init(vm); - - return error; -} - -VLIB_INIT_FUNCTION (snat_init); - -void snat_free_outside_address_and_port (snat_main_t * sm, - snat_session_key_t * k, - u32 address_index) -{ - snat_address_t *a; - u16 port_host_byte_order = clib_net_to_host_u16 (k->port); - - ASSERT (address_index < vec_len (sm->addresses)); - - a = sm->addresses + address_index; - - switch (k->protocol) - { -#define _(N, i, n, s) \ - case SNAT_PROTOCOL_##N: \ - ASSERT (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \ - port_host_byte_order) == 1); \ - clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \ - port_host_byte_order, 0); \ - a->busy_##n##_ports--; \ - break; - foreach_snat_protocol -#undef _ - default: - clib_warning("unknown_protocol"); - return; - } -} - -/** - * @brief Match SNAT static mapping. - * - * @param sm SNAT main. - * @param match Address and port to match. - * @param mapping External or local address and port of the matched mapping. - * @param by_external If 0 match by local address otherwise match by external - * address. - * @param is_addr_only If matched mapping is address only - * - * @returns 0 if match found otherwise 1. - */ -int snat_static_mapping_match (snat_main_t * sm, - snat_session_key_t match, - snat_session_key_t * mapping, - u8 by_external, - u8 *is_addr_only) -{ - clib_bihash_kv_8_8_t kv, value; - snat_static_mapping_t *m; - snat_session_key_t m_key; - clib_bihash_8_8_t *mapping_hash = &sm->static_mapping_by_local; - - if (by_external) - mapping_hash = &sm->static_mapping_by_external; - - m_key.addr = match.addr; - m_key.port = clib_net_to_host_u16 (match.port); - m_key.protocol = match.protocol; - m_key.fib_index = match.fib_index; - - kv.key = m_key.as_u64; - - if (clib_bihash_search_8_8 (mapping_hash, &kv, &value)) - { - /* Try address only mapping */ - m_key.port = 0; - m_key.protocol = 0; - kv.key = m_key.as_u64; - if (clib_bihash_search_8_8 (mapping_hash, &kv, &value)) - return 1; - } - - m = pool_elt_at_index (sm->static_mappings, value.value); - - if (by_external) - { - mapping->addr = m->local_addr; - /* Address only mapping doesn't change port */ - mapping->port = m->addr_only ? match.port - : clib_host_to_net_u16 (m->local_port); - mapping->fib_index = m->fib_index; - } - else - { - mapping->addr = m->external_addr; - /* Address only mapping doesn't change port */ - mapping->port = m->addr_only ? match.port - : clib_host_to_net_u16 (m->external_port); - mapping->fib_index = sm->outside_fib_index; - } - - if (PREDICT_FALSE(is_addr_only != 0)) - *is_addr_only = m->addr_only; - - return 0; -} - -static_always_inline u16 -snat_random_port (snat_main_t * sm, u16 min, u16 max) -{ - return min + random_u32 (&sm->random_seed) / - (random_u32_max() / (max - min + 1) + 1); -} - -int snat_alloc_outside_address_and_port (snat_main_t * sm, - u32 fib_index, - u32 thread_index, - snat_session_key_t * k, - u32 * address_indexp) -{ - int i; - snat_address_t *a; - u32 portnum; - - for (i = 0; i < vec_len (sm->addresses); i++) - { - a = sm->addresses + i; - if (sm->vrf_mode && a->fib_index != ~0 && a->fib_index != fib_index) - continue; - switch (k->protocol) - { -#define _(N, j, n, s) \ - case SNAT_PROTOCOL_##N: \ - if (a->busy_##n##_ports < (sm->port_per_thread * sm->num_snat_thread)) \ - { \ - while (1) \ - { \ - portnum = (sm->port_per_thread * \ - sm->per_thread_data[thread_index].snat_thread_index) + \ - snat_random_port(sm, 0, sm->port_per_thread) + 1024; \ - if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, portnum)) \ - continue; \ - clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, portnum, 1); \ - a->busy_##n##_ports++; \ - k->addr = a->addr; \ - k->port = clib_host_to_net_u16(portnum); \ - *address_indexp = i; \ - return 0; \ - } \ - } \ - break; - foreach_snat_protocol -#undef _ - default: - clib_warning("unknown protocol"); - return 1; - } - - } - /* Totally out of translations to use... */ - snat_ipfix_logging_addresses_exhausted(0); - return 1; -} - - -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; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - 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, "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) - clib_warning ("%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) - snat_add_address (sm, &this_addr, vrf_id); - else - rv = snat_del_address (sm, this_addr, 0); - - switch (rv) - { - case VNET_API_ERROR_NO_SUCH_ENTRY: - error = clib_error_return (0, "S-NAT address not exist."); - goto done; - case VNET_API_ERROR_UNSPECIFIED: - error = clib_error_return (0, "S-NAT address used in static mapping."); - goto done; - default: - break; - } - - increment_v4_address (&this_addr); - } - -done: - unformat_free (line_input); - - return error; -} - -VLIB_CLI_COMMAND (add_address_command, static) = { - .path = "snat add address", - .short_help = "snat add addresses <ip4-range-start> [- <ip4-range-end>] " - "[tenant-vrf <vrf-id>] [del]", - .function = add_address_command_fn, -}; - -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 is_del = 0; - int i; - - sw_if_index = ~0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - 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 (snat_interface_add_del_output_feature (sw_if_index, 1, is_del)) - { - error = clib_error_return (0, "%s %U failed", - is_del ? "del" : "add", - format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (vnm, - sw_if_index)); - goto done; - } - } - else - { - if (snat_interface_add_del (sw_if_index, 1, is_del)) - { - error = clib_error_return (0, "%s %U failed", - is_del ? "del" : "add", - format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (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 (snat_interface_add_del_output_feature (sw_if_index, 0, is_del)) - { - error = clib_error_return (0, "%s %U failed", - is_del ? "del" : "add", - format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (vnm, - sw_if_index)); - goto done; - } - } - else - { - if (snat_interface_add_del (sw_if_index, 0, is_del)) - { - error = clib_error_return (0, "%s %U failed", - is_del ? "del" : "add", - format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (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; -} - -VLIB_CLI_COMMAND (set_interface_snat_command, static) = { - .path = "set interface snat", - .function = snat_feature_command_fn, - .short_help = "set interface snat in <intfc> out <intfc> [output-feature] " - "[del]", -}; - -uword -unformat_snat_protocol (unformat_input_t * input, va_list * args) -{ - u32 *r = va_arg (*args, u32 *); - - if (0); -#define _(N, i, n, s) else if (unformat (input, s)) *r = SNAT_PROTOCOL_##N; - foreach_snat_protocol -#undef _ - else - return 0; - return 1; -} - -u8 * -format_snat_protocol (u8 * s, va_list * args) -{ - u32 i = va_arg (*args, u32); - u8 *t = 0; - - switch (i) - { -#define _(N, j, n, str) case SNAT_PROTOCOL_##N: t = (u8 *) str; break; - foreach_snat_protocol -#undef _ - default: - s = format (s, "unknown"); - return s; - } - s = format (s, "%s", t); - return s; -} - -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; - clib_error_t * error = 0; - ip4_address_t l_addr, e_addr; - u32 l_port = 0, e_port = 0, vrf_id = ~0; - int is_add = 1; - int addr_only = 1; - u32 sw_if_index = ~0; - vnet_main_t * vnm = vnet_get_main(); - int rv; - snat_protocol_t proto; - u8 proto_set = 0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "local %U %u", unformat_ip4_address, &l_addr, - &l_port)) - addr_only = 0; - 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)) - addr_only = 0; - 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)) - addr_only = 0; - - else if (unformat (line_input, "external %U", - unformat_vnet_sw_interface, vnm, &sw_if_index)) - ; - else if (unformat (line_input, "vrf %u", &vrf_id)) - ; - else if (unformat (line_input, "%U", unformat_snat_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 (!addr_only && !proto_set) - { - error = clib_error_return (0, "missing protocol"); - goto done; - } - - rv = snat_add_static_mapping(l_addr, e_addr, (u16) l_port, (u16) e_port, - vrf_id, addr_only, sw_if_index, proto, is_add); - - 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 addres 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; -} - -/*? - * @cliexpar - * @cliexstart{snat 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# snat add static mapping local tcp 10.0.0.3 6303 external 4.4.4.4 3606 - * If not runnig "static mapping only" S-NAT plugin mode use before: - * vpp# snat add address 4.4.4.4 - * To create static mapping between local and external address use: - * vpp# snat add static mapping local 10.0.0.3 external 4.4.4.4 - * @cliexend -?*/ -VLIB_CLI_COMMAND (add_static_mapping_command, static) = { - .path = "snat add static mapping", - .function = add_static_mapping_command_fn, - .short_help = - "snat add static mapping local tcp|udp|icmp <addr> [<port>] external <addr> [<port>] [vrf <table-id>] [del]", -}; - -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 0; - - 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; -} - -/*? - * @cliexpar - * @cliexstart{set snat workers} - * Set SNAT 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 snat workers", - .function = set_workers_command_fn, - .short_help = - "set snat workers <workers-list>", -}; - -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; - u32 domain_id = 0; - u32 src_port = 0; - u8 enable = 1; - int rv = 0; - clib_error_t *error = 0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - 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 (unformat (line_input, "disable")) - enable = 0; - else - { - error = clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - goto done; - } - } - - rv = snat_ipfix_logging_enable_disable (enable, domain_id, (u16) src_port); - - if (rv) - { - error = clib_error_return (0, "ipfix logging enable failed"); - goto done; - } - -done: - unformat_free (line_input); - - return error; -} - -/*? - * @cliexpar - * @cliexstart{snat ipfix logging} - * To enable SNAT IPFIX logging use: - * vpp# snat 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 = "snat ipfix logging", - .function = snat_ipfix_logging_enable_disable_command_fn, - .short_help = "snat ipfix logging [domain <domain-id>] [src-port <port>] [disable]", -}; - -static u32 -snat_get_worker_in2out_cb (ip4_header_t * ip0, u32 rx_fib_index0) -{ - snat_main_t *sm = &snat_main; - snat_user_key_t key0; - clib_bihash_kv_8_8_t kv0, value0; - u32 next_worker_index = 0; - - key0.addr = ip0->src_address; - key0.fib_index = rx_fib_index0; - - kv0.key = key0.as_u64; - - /* Ever heard of of the "user" before? */ - if (clib_bihash_search_8_8 (&sm->worker_by_in, &kv0, &value0)) - { - /* No, assign next available worker (RR) */ - next_worker_index = sm->first_worker_index; - if (vec_len (sm->workers)) - { - next_worker_index += - sm->workers[sm->next_worker++ % _vec_len (sm->workers)]; - } - - /* add non-traslated packets worker lookup */ - kv0.value = next_worker_index; - clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv0, 1); - } - else - next_worker_index = value0.value; - - return next_worker_index; -} - -static u32 -snat_get_worker_out2in_cb (ip4_header_t * ip0, u32 rx_fib_index0) -{ - snat_main_t *sm = &snat_main; - snat_worker_key_t key0; - clib_bihash_kv_8_8_t kv0, value0; - udp_header_t * udp0; - u32 next_worker_index = 0; - - udp0 = ip4_next_header (ip0); - - key0.addr = ip0->dst_address; - key0.port = udp0->dst_port; - key0.fib_index = rx_fib_index0; - - if (PREDICT_FALSE(ip0->protocol == IP_PROTOCOL_ICMP)) - { - icmp46_header_t * icmp0 = (icmp46_header_t *) udp0; - icmp_echo_header_t *echo0 = (icmp_echo_header_t *)(icmp0+1); - key0.port = echo0->identifier; - } - - kv0.key = key0.as_u64; - - /* Ever heard of of the "user" before? */ - if (clib_bihash_search_8_8 (&sm->worker_by_out, &kv0, &value0)) - { - key0.port = 0; - kv0.key = key0.as_u64; - - if (clib_bihash_search_8_8 (&sm->worker_by_out, &kv0, &value0)) - { - /* No, assign next available worker (RR) */ - next_worker_index = sm->first_worker_index; - if (vec_len (sm->workers)) - { - next_worker_index += - sm->workers[sm->next_worker++ % _vec_len (sm->workers)]; - } - } - else - { - /* Static mapping without port */ - next_worker_index = value0.value; - } - - /* Add to translated packets worker lookup */ - kv0.value = next_worker_index; - clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv0, 1); - } - else - next_worker_index = value0.value; - - return next_worker_index; -} - -static clib_error_t * -snat_config (vlib_main_t * vm, unformat_input_t * input) -{ - snat_main_t * sm = &snat_main; - u32 translation_buckets = 1024; - u32 translation_memory_size = 128<<20; - u32 user_buckets = 128; - u32 user_memory_size = 64<<20; - u32 max_translations_per_user = 100; - u32 outside_vrf_id = 0; - u32 inside_vrf_id = 0; - u32 static_mapping_buckets = 1024; - u32 static_mapping_memory_size = 64<<20; - u8 static_mapping_only = 0; - u8 static_mapping_connection_tracking = 0; - - sm->deterministic = 0; - - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "translation hash buckets %d", &translation_buckets)) - ; - else if (unformat (input, "translation hash memory %d", - &translation_memory_size)); - else if (unformat (input, "user hash buckets %d", &user_buckets)) - ; - else if (unformat (input, "user hash memory %d", - &user_memory_size)) - ; - else if (unformat (input, "max translations per user %d", - &max_translations_per_user)) - ; - else if (unformat (input, "outside VRF id %d", - &outside_vrf_id)) - ; - else if (unformat (input, "inside VRF id %d", - &inside_vrf_id)) - ; - else if (unformat (input, "static mapping only")) - { - static_mapping_only = 1; - if (unformat (input, "connection tracking")) - static_mapping_connection_tracking = 1; - } - else if (unformat (input, "deterministic")) - sm->deterministic = 1; - else - return clib_error_return (0, "unknown input '%U'", - format_unformat_error, input); - } - - /* for show commands, etc. */ - sm->translation_buckets = translation_buckets; - sm->translation_memory_size = translation_memory_size; - sm->user_buckets = user_buckets; - sm->user_memory_size = user_memory_size; - sm->max_translations_per_user = max_translations_per_user; - sm->outside_vrf_id = outside_vrf_id; - sm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, - outside_vrf_id); - sm->inside_vrf_id = inside_vrf_id; - sm->inside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, - inside_vrf_id); - sm->static_mapping_only = static_mapping_only; - sm->static_mapping_connection_tracking = static_mapping_connection_tracking; - - if (sm->deterministic) - { - sm->in2out_node_index = snat_det_in2out_node.index; - sm->in2out_output_node_index = ~0; - sm->out2in_node_index = snat_det_out2in_node.index; - sm->icmp_match_in2out_cb = icmp_match_in2out_det; - sm->icmp_match_out2in_cb = icmp_match_out2in_det; - } - else - { - sm->worker_in2out_cb = snat_get_worker_in2out_cb; - sm->worker_out2in_cb = snat_get_worker_out2in_cb; - sm->in2out_node_index = snat_in2out_node.index; - sm->in2out_output_node_index = snat_in2out_output_node.index; - sm->out2in_node_index = snat_out2in_node.index; - if (!static_mapping_only || - (static_mapping_only && static_mapping_connection_tracking)) - { - sm->icmp_match_in2out_cb = icmp_match_in2out_slow; - sm->icmp_match_out2in_cb = icmp_match_out2in_slow; - - clib_bihash_init_8_8 (&sm->worker_by_in, "worker-by-in", user_buckets, - user_memory_size); - - clib_bihash_init_8_8 (&sm->worker_by_out, "worker-by-out", user_buckets, - user_memory_size); - - clib_bihash_init_8_8 (&sm->in2out, "in2out", translation_buckets, - translation_memory_size); - - clib_bihash_init_8_8 (&sm->out2in, "out2in", translation_buckets, - translation_memory_size); - - clib_bihash_init_8_8 (&sm->user_hash, "users", user_buckets, - user_memory_size); - - clib_bihash_init_16_8 (&sm->in2out_unk_proto, "in2out-unk-proto", - translation_buckets, translation_memory_size); - - clib_bihash_init_16_8 (&sm->out2in_unk_proto, "out2in-unk-proto", - translation_buckets, translation_memory_size); - } - else - { - sm->icmp_match_in2out_cb = icmp_match_in2out_fast; - sm->icmp_match_out2in_cb = icmp_match_out2in_fast; - } - clib_bihash_init_8_8 (&sm->static_mapping_by_local, - "static_mapping_by_local", static_mapping_buckets, - static_mapping_memory_size); - - clib_bihash_init_8_8 (&sm->static_mapping_by_external, - "static_mapping_by_external", static_mapping_buckets, - static_mapping_memory_size); - } - - return 0; -} - -VLIB_CONFIG_FUNCTION (snat_config, "snat"); - -u8 * format_snat_session_state (u8 * s, va_list * args) -{ - u32 i = va_arg (*args, u32); - u8 *t = 0; - - switch (i) - { -#define _(v, N, str) case SNAT_SESSION_##N: t = (u8 *) str; break; - foreach_snat_session_state -#undef _ - default: - t = format (t, "unknown"); - } - s = format (s, "%s", t); - return s; -} - -u8 * format_snat_key (u8 * s, va_list * args) -{ - snat_session_key_t * key = va_arg (*args, snat_session_key_t *); - char * protocol_string = "unknown"; - static char *protocol_strings[] = { - "UDP", - "TCP", - "ICMP", - }; - - if (key->protocol < ARRAY_LEN(protocol_strings)) - protocol_string = protocol_strings[key->protocol]; - - s = format (s, "%U proto %s port %d fib %d", - format_ip4_address, &key->addr, protocol_string, - clib_net_to_host_u16 (key->port), key->fib_index); - return s; -} - -u8 * format_snat_session (u8 * s, va_list * args) -{ - snat_main_t * sm __attribute__((unused)) = va_arg (*args, snat_main_t *); - snat_session_t * sess = va_arg (*args, snat_session_t *); - - if (snat_is_unk_proto_session (sess)) - { - s = format (s, " i2o %U proto %u fib %u\n", - format_ip4_address, &sess->in2out.addr, sess->in2out.port, - sess->in2out.fib_index); - s = format (s, " o2i %U proto %u fib %u\n", - format_ip4_address, &sess->out2in.addr, sess->out2in.port, - sess->out2in.fib_index); - } - else - { - s = format (s, " i2o %U\n", format_snat_key, &sess->in2out); - s = format (s, " o2i %U\n", format_snat_key, &sess->out2in); - } - s = format (s, " last heard %.2f\n", sess->last_heard); - s = format (s, " total pkts %d, total bytes %lld\n", - sess->total_pkts, sess->total_bytes); - if (snat_is_session_static (sess)) - s = format (s, " static translation\n"); - else - s = format (s, " dynamic translation\n"); - - return s; -} - -u8 * format_snat_user (u8 * s, va_list * args) -{ - snat_main_per_thread_data_t * sm = va_arg (*args, snat_main_per_thread_data_t *); - snat_user_t * u = va_arg (*args, snat_user_t *); - int verbose = va_arg (*args, int); - dlist_elt_t * head, * elt; - u32 elt_index, head_index; - u32 session_index; - snat_session_t * sess; - - s = format (s, "%U: %d dynamic translations, %d static translations\n", - format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions); - - if (verbose == 0) - return s; - - if (u->nsessions || u->nstaticsessions) - { - head_index = u->sessions_per_user_list_head_index; - head = pool_elt_at_index (sm->list_pool, head_index); - - elt_index = head->next; - elt = pool_elt_at_index (sm->list_pool, elt_index); - session_index = elt->value; - - while (session_index != ~0) - { - sess = pool_elt_at_index (sm->sessions, session_index); - - s = format (s, " %U\n", format_snat_session, sm, sess); - - elt_index = elt->next; - elt = pool_elt_at_index (sm->list_pool, elt_index); - session_index = elt->value; - } - } - - return s; -} - -u8 * format_snat_static_mapping (u8 * s, va_list * args) -{ - snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *); - - if (m->addr_only) - s = format (s, "local %U external %U vrf %d", - format_ip4_address, &m->local_addr, - format_ip4_address, &m->external_addr, - m->vrf_id); - else - s = format (s, "%U local %U:%d external %U:%d vrf %d", - format_snat_protocol, m->proto, - format_ip4_address, &m->local_addr, m->local_port, - format_ip4_address, &m->external_addr, m->external_port, - m->vrf_id); - - return s; -} - -u8 * format_snat_static_map_to_resolve (u8 * s, va_list * args) -{ - snat_static_map_resolve_t *m = va_arg (*args, snat_static_map_resolve_t *); - vnet_main_t *vnm = vnet_get_main(); - - if (m->addr_only) - s = format (s, "local %U external %U vrf %d", - format_ip4_address, &m->l_addr, - format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (vnm, m->sw_if_index), - m->vrf_id); - else - s = format (s, "%U local %U:%d external %U:%d vrf %d", - format_snat_protocol, m->proto, - format_ip4_address, &m->l_addr, m->l_port, - format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (vnm, m->sw_if_index), m->e_port, - m->vrf_id); - - return s; -} - -u8 * format_det_map_ses (u8 * s, va_list * args) -{ - snat_det_map_t * det_map = va_arg (*args, snat_det_map_t *); - ip4_address_t in_addr, out_addr; - u32 in_offset, out_offset; - snat_det_session_t * ses = va_arg (*args, snat_det_session_t *); - u32 * i = va_arg (*args, u32 *); - - u32 user_index = *i / SNAT_DET_SES_PER_USER; - in_addr.as_u32 = clib_host_to_net_u32 ( - clib_net_to_host_u32(det_map->in_addr.as_u32) + user_index); - in_offset = clib_net_to_host_u32(in_addr.as_u32) - - clib_net_to_host_u32(det_map->in_addr.as_u32); - out_offset = in_offset / det_map->sharing_ratio; - out_addr.as_u32 = clib_host_to_net_u32( - clib_net_to_host_u32(det_map->out_addr.as_u32) + out_offset); - s = format (s, "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n", - format_ip4_address, &in_addr, - clib_net_to_host_u16 (ses->in_port), - format_ip4_address, &out_addr, - clib_net_to_host_u16 (ses->out.out_port), - format_ip4_address, &ses->out.ext_host_addr, - clib_net_to_host_u16 (ses->out.ext_host_port), - format_snat_session_state, ses->state, - ses->expire); - - return s; -} - -static clib_error_t * -show_snat_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - int verbose = 0; - snat_main_t * sm = &snat_main; - snat_user_t * u; - snat_static_mapping_t *m; - snat_interface_t *i; - snat_address_t * ap; - vnet_main_t *vnm = vnet_get_main(); - snat_main_per_thread_data_t *tsm; - u32 users_num = 0, sessions_num = 0, *worker, *sw_if_index; - uword j = 0; - snat_static_map_resolve_t *rp; - snat_det_map_t * dm; - snat_det_session_t * ses; - - if (unformat (input, "detail")) - verbose = 1; - else if (unformat (input, "verbose")) - verbose = 2; - - if (sm->static_mapping_only) - { - if (sm->static_mapping_connection_tracking) - vlib_cli_output (vm, "SNAT mode: static mapping only connection " - "tracking"); - else - vlib_cli_output (vm, "SNAT mode: static mapping only"); - } - else if (sm->deterministic) - { - vlib_cli_output (vm, "SNAT mode: deterministic mapping"); - } - else - { - vlib_cli_output (vm, "SNAT mode: dynamic translations enabled"); - } - - if (verbose > 0) - { - pool_foreach (i, sm->interfaces, - ({ - vlib_cli_output (vm, "%U %s", format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (vnm, i->sw_if_index), - i->is_inside ? "in" : "out"); - })); - - pool_foreach (i, sm->output_feature_interfaces, - ({ - vlib_cli_output (vm, "%U output-feature %s", - format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (vnm, i->sw_if_index), - i->is_inside ? "in" : "out"); - })); - - if (vec_len (sm->auto_add_sw_if_indices)) - { - vlib_cli_output (vm, "SNAT pool addresses interfaces:"); - vec_foreach (sw_if_index, sm->auto_add_sw_if_indices) - { - vlib_cli_output (vm, "%U", format_vnet_sw_interface_name, vnm, - vnet_get_sw_interface (vnm, *sw_if_index)); - } - } - - 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", - ip4_fib_get(ap->fib_index)->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_snat_protocol -#undef _ - } - } - - if (sm->num_workers > 1) - { - vlib_cli_output (vm, "%d workers", vec_len (sm->workers)); - if (verbose > 0) - { - 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); - } - } - } - - if (sm->deterministic) - { - vlib_cli_output (vm, "udp timeout: %dsec", sm->udp_timeout); - vlib_cli_output (vm, "tcp-established timeout: %dsec", - sm->tcp_established_timeout); - vlib_cli_output (vm, "tcp-transitory timeout: %dsec", - sm->tcp_transitory_timeout); - vlib_cli_output (vm, "icmp timeout: %dsec", sm->icmp_timeout); - vlib_cli_output (vm, "%d deterministic mappings", - pool_elts (sm->det_maps)); - if (verbose > 0) - { - pool_foreach (dm, sm->det_maps, - ({ - vlib_cli_output (vm, "in %U/%d out %U/%d\n", - format_ip4_address, &dm->in_addr, dm->in_plen, - format_ip4_address, &dm->out_addr, dm->out_plen); - vlib_cli_output (vm, " outside address sharing ratio: %d\n", - dm->sharing_ratio); - vlib_cli_output (vm, " number of ports per inside host: %d\n", - dm->ports_per_host); - vlib_cli_output (vm, " sessions number: %d\n", dm->ses_num); - if (verbose > 1) - { - vec_foreach_index (j, dm->sessions) - { - ses = vec_elt_at_index (dm->sessions, j); - if (ses->in_port) - vlib_cli_output (vm, " %U", format_det_map_ses, dm, ses, - &j); - } - } - })); - } - } - else - { - if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking)) - { - vlib_cli_output (vm, "%d static mappings", - pool_elts (sm->static_mappings)); - - if (verbose > 0) - { - pool_foreach (m, sm->static_mappings, - ({ - vlib_cli_output (vm, "%U", format_snat_static_mapping, m); - })); - } - } - else - { - vec_foreach (tsm, sm->per_thread_data) - { - users_num += pool_elts (tsm->users); - sessions_num += pool_elts (tsm->sessions); - } - - vlib_cli_output (vm, "%d users, %d outside addresses, %d active sessions," - " %d static mappings", - users_num, - vec_len (sm->addresses), - sessions_num, - pool_elts (sm->static_mappings)); - - if (verbose > 0) - { - vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->in2out, - verbose - 1); - vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->out2in, - verbose - 1); - vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->worker_by_in, - verbose - 1); - vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->worker_by_out, - verbose - 1); - vec_foreach_index (j, sm->per_thread_data) - { - tsm = vec_elt_at_index (sm->per_thread_data, j); - - if (pool_elts (tsm->users) == 0) - continue; - - vlib_worker_thread_t *w = vlib_worker_threads + j; - vlib_cli_output (vm, "Thread %d (%s at lcore %u):", j, w->name, - w->lcore_id); - vlib_cli_output (vm, " %d list pool elements", - pool_elts (tsm->list_pool)); - - pool_foreach (u, tsm->users, - ({ - vlib_cli_output (vm, " %U", format_snat_user, tsm, u, - verbose - 1); - })); - } - - if (pool_elts (sm->static_mappings)) - { - vlib_cli_output (vm, "static mappings:"); - pool_foreach (m, sm->static_mappings, - ({ - vlib_cli_output (vm, "%U", format_snat_static_mapping, m); - })); - for (j = 0; j < vec_len (sm->to_resolve); j++) - { - rp = sm->to_resolve + j; - vlib_cli_output (vm, "%U", - format_snat_static_map_to_resolve, rp); - } - } - } - } - } - return 0; -} - -VLIB_CLI_COMMAND (show_snat_command, static) = { - .path = "show snat", - .short_help = "show snat", - .function = show_snat_command_fn, -}; - - -static void -snat_ip4_add_del_interface_address_cb (ip4_main_t * im, - uword opaque, - u32 sw_if_index, - ip4_address_t * address, - u32 address_length, - u32 if_address_index, - u32 is_delete) -{ - snat_main_t *sm = &snat_main; - snat_static_map_resolve_t *rp; - u32 *indices_to_delete = 0; - int i, j; - int rv; - - for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++) - { - if (sw_if_index == sm->auto_add_sw_if_indices[i]) - { - if (!is_delete) - { - /* Don't trip over lease renewal, static config */ - for (j = 0; j < vec_len(sm->addresses); j++) - if (sm->addresses[j].addr.as_u32 == address->as_u32) - return; - - snat_add_address (sm, address, ~0); - /* Scan static map resolution vector */ - for (j = 0; j < vec_len (sm->to_resolve); j++) - { - rp = sm->to_resolve + j; - /* On this interface? */ - if (rp->sw_if_index == sw_if_index) - { - /* Add the static mapping */ - rv = snat_add_static_mapping (rp->l_addr, - address[0], - rp->l_port, - rp->e_port, - rp->vrf_id, - rp->addr_only, - ~0 /* sw_if_index */, - rp->proto, - rp->is_add); - if (rv) - clib_warning ("snat_add_static_mapping returned %d", - rv); - vec_add1 (indices_to_delete, j); - } - } - /* If we resolved any of the outstanding static mappings */ - if (vec_len(indices_to_delete)) - { - /* Delete them */ - for (j = vec_len(indices_to_delete)-1; j >= 0; j--) - vec_delete(sm->to_resolve, 1, j); - vec_free(indices_to_delete); - } - return; - } - else - { - (void) snat_del_address(sm, address[0], 1); - return; - } - } - } -} - - -int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del) -{ - ip4_main_t * ip4_main = sm->ip4_main; - ip4_address_t * first_int_addr; - snat_static_map_resolve_t *rp; - u32 *indices_to_delete = 0; - int i, j; - - first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, - 0 /* just want the address*/); - - for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++) - { - if (sm->auto_add_sw_if_indices[i] == sw_if_index) - { - if (is_del) - { - /* if have address remove it */ - if (first_int_addr) - (void) snat_del_address (sm, first_int_addr[0], 1); - else - { - for (j = 0; j < vec_len (sm->to_resolve); j++) - { - rp = sm->to_resolve + j; - if (rp->sw_if_index == sw_if_index) - vec_add1 (indices_to_delete, j); - } - if (vec_len(indices_to_delete)) - { - for (j = vec_len(indices_to_delete)-1; j >= 0; j--) - vec_del1(sm->to_resolve, j); - vec_free(indices_to_delete); - } - } - vec_del1(sm->auto_add_sw_if_indices, i); - } - else - return VNET_API_ERROR_VALUE_EXIST; - - return 0; - } - } - - if (is_del) - return VNET_API_ERROR_NO_SUCH_ENTRY; - - /* add to the auto-address list */ - vec_add1(sm->auto_add_sw_if_indices, sw_if_index); - - /* If the address is already bound - or static - add it now */ - if (first_int_addr) - snat_add_address (sm, first_int_addr, ~0); - - 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) -{ - snat_main_t *sm = &snat_main; - unformat_input_t _line_input, *line_input = &_line_input; - u32 sw_if_index; - int rv; - int is_del = 0; - clib_error_t *error = 0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - 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, "del")) - is_del = 1; - else - { - error = clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - goto done; - } - } - - rv = snat_add_interface_address (sm, sw_if_index, is_del); - - switch (rv) - { - case 0: - break; - - default: - error = clib_error_return (0, "snat_add_interface_address returned %d", - rv); - goto done; - } - -done: - unformat_free (line_input); - - return error; -} - -VLIB_CLI_COMMAND (snat_add_interface_address_command, static) = { - .path = "snat add interface address", - .short_help = "snat add interface address <interface> [del]", - .function = snat_add_interface_address_command_fn, -}; - -static clib_error_t * -snat_det_map_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; - ip4_address_t in_addr, out_addr; - u32 in_plen, out_plen; - int is_add = 1, rv; - clib_error_t *error = 0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "in %U/%u", unformat_ip4_address, &in_addr, &in_plen)) - ; - else if (unformat (line_input, "out %U/%u", unformat_ip4_address, &out_addr, &out_plen)) - ; - 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; - } - } - - unformat_free (line_input); - - rv = snat_det_add_map(sm, &in_addr, (u8) in_plen, &out_addr, (u8)out_plen, - is_add); - - if (rv) - { - error = clib_error_return (0, "snat_det_add_map return %d", rv); - goto done; - } - -done: - unformat_free (line_input); - - return error; -} - -/*? - * @cliexpar - * @cliexstart{snat deterministic add} - * Create bijective mapping of inside address to outside address and port range - * pairs, with the purpose of enabling deterministic NAT to reduce logging in - * CGN deployments. - * To create deterministic mapping between inside network 10.0.0.0/18 and - * outside network 1.1.1.0/30 use: - * # vpp# snat deterministic add in 10.0.0.0/18 out 1.1.1.0/30 - * @cliexend -?*/ -VLIB_CLI_COMMAND (snat_det_map_command, static) = { - .path = "snat deterministic add", - .short_help = "snat deterministic add in <addr>/<plen> out <addr>/<plen> [del]", - .function = snat_det_map_command_fn, -}; - -static clib_error_t * -snat_det_forward_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; - ip4_address_t in_addr, out_addr; - u16 lo_port; - snat_det_map_t * dm; - clib_error_t *error = 0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "%U", unformat_ip4_address, &in_addr)) - ; - else - { - error = clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - goto done; - } - } - - unformat_free (line_input); - - dm = snat_det_map_by_user(sm, &in_addr); - if (!dm) - vlib_cli_output (vm, "no match"); - else - { - snat_det_forward (dm, &in_addr, &out_addr, &lo_port); - vlib_cli_output (vm, "%U:<%d-%d>", format_ip4_address, &out_addr, - lo_port, lo_port + dm->ports_per_host - 1); - } - -done: - unformat_free (line_input); - - return error; -} - -/*? - * @cliexpar - * @cliexstart{snat deterministic forward} - * Return outside address and port range from inside address for deterministic - * NAT. - * To obtain outside address and port of inside host use: - * vpp# snat deterministic forward 10.0.0.2 - * 1.1.1.0:<1054-1068> - * @cliexend -?*/ -VLIB_CLI_COMMAND (snat_det_forward_command, static) = { - .path = "snat deterministic forward", - .short_help = "snat deterministic forward <addr>", - .function = snat_det_forward_command_fn, -}; - -static clib_error_t * -snat_det_reverse_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; - ip4_address_t in_addr, out_addr; - u32 out_port; - snat_det_map_t * dm; - clib_error_t *error = 0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "%U:%d", unformat_ip4_address, &out_addr, &out_port)) - ; - else - { - error = clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - } - } - - unformat_free (line_input); - - if (out_port < 1024 || out_port > 65535) - { - error = clib_error_return (0, "wrong port, must be <1024-65535>"); - goto done; - } - - dm = snat_det_map_by_out(sm, &out_addr); - if (!dm) - vlib_cli_output (vm, "no match"); - else - { - snat_det_reverse (dm, &out_addr, (u16) out_port, &in_addr); - vlib_cli_output (vm, "%U", format_ip4_address, &in_addr); - } - -done: - unformat_free (line_input); - - return error; -} - -/*? - * @cliexpar - * @cliexstart{snat deterministic reverse} - * Return inside address from outside address and port for deterministic NAT. - * To obtain inside host address from outside address and port use: - * #vpp snat deterministic reverse 1.1.1.1:1276 - * 10.0.16.16 - * @cliexend -?*/ -VLIB_CLI_COMMAND (snat_det_reverse_command, static) = { - .path = "snat deterministic reverse", - .short_help = "snat deterministic reverse <addr>:<port>", - .function = snat_det_reverse_command_fn, -}; - -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; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "udp %u", &sm->udp_timeout)) - ; - else if (unformat (line_input, "tcp-established %u", - &sm->tcp_established_timeout)) - ; - else if (unformat (line_input, "tcp-transitory %u", - &sm->tcp_transitory_timeout)) - ; - else if (unformat (line_input, "icmp %u", &sm->icmp_timeout)) - ; - else if (unformat (line_input, "reset")) - { - sm->udp_timeout = SNAT_UDP_TIMEOUT; - sm->tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT; - sm->tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT; - sm->icmp_timeout = SNAT_ICMP_TIMEOUT; - } - else - { - error = clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - goto done; - } - } - - unformat_free (line_input); - -done: - unformat_free (line_input); - - return error; -} - -/*? - * @cliexpar - * @cliexstart{set snat deterministic timeout} - * Set values of timeouts for deterministic NAT (in seconds), use: - * vpp# set snat deterministic timeout udp 120 tcp-established 7500 - * tcp-transitory 250 icmp 90 - * To reset default values use: - * vpp# set snat deterministic timeout reset - * @cliexend -?*/ -VLIB_CLI_COMMAND (set_timeout_command, static) = { - .path = "set snat deterministic timeout", - .function = set_timeout_command_fn, - .short_help = - "set snat deterministic timeout [udp <sec> | tcp-established <sec> " - "tcp-transitory <sec> | icmp <sec> | reset]", -}; - -static clib_error_t * -snat_det_close_session_out_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; - ip4_address_t out_addr, ext_addr, in_addr; - u16 out_port, ext_port; - snat_det_map_t * dm; - snat_det_session_t * ses; - snat_det_out_key_t key; - clib_error_t *error = 0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "%U:%d %U:%d", - unformat_ip4_address, &out_addr, &out_port, - unformat_ip4_address, &ext_addr, &ext_port)) - ; - else - { - error = clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - goto done; - } - } - - unformat_free (line_input); - - dm = snat_det_map_by_out(sm, &out_addr); - if (!dm) - vlib_cli_output (vm, "no match"); - else - { - snat_det_reverse(dm, &ext_addr, out_port, &in_addr); - key.ext_host_addr = out_addr; - key.ext_host_port = ntohs(ext_port); - key.out_port = ntohs(out_port); - ses = snat_det_get_ses_by_out(dm, &out_addr, key.as_u64); - if (!ses) - vlib_cli_output (vm, "no match"); - else - snat_det_ses_close(dm, ses); - } - -done: - unformat_free (line_input); - - return error; -} - -/*? - * @cliexpar - * @cliexstart{snat deterministic close session out} - * Close session using outside ip address and port - * and external ip address and port, use: - * vpp# snat deterministic close session out 1.1.1.1:1276 2.2.2.2:2387 - * @cliexend -?*/ -VLIB_CLI_COMMAND (snat_det_close_sesion_out_command, static) = { - .path = "snat deterministic close session out", - .short_help = "snat deterministic close session out " - "<out_addr>:<out_port> <ext_addr>:<ext_port>", - .function = snat_det_close_session_out_fn, -}; - -static clib_error_t * -snat_det_close_session_in_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; - ip4_address_t in_addr, ext_addr; - u16 in_port, ext_port; - snat_det_map_t * dm; - snat_det_session_t * ses; - snat_det_out_key_t key; - clib_error_t *error = 0; - - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (line_input, "%U:%d %U:%d", - unformat_ip4_address, &in_addr, &in_port, - unformat_ip4_address, &ext_addr, &ext_port)) - ; - else - { - error = clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - goto done; - } - } - - unformat_free (line_input); - - dm = snat_det_map_by_user (sm, &in_addr); - if (!dm) - vlib_cli_output (vm, "no match"); - else - { - key.ext_host_addr = ext_addr; - key.ext_host_port = ntohs (ext_port); - ses = snat_det_find_ses_by_in (dm, &in_addr, ntohs(in_port), key); - if (!ses) - vlib_cli_output (vm, "no match"); - else - snat_det_ses_close(dm, ses); - } - -done: - unformat_free(line_input); - - return error; -} - -/*? - * @cliexpar - * @cliexstart{snat deterministic close_session_in} - * Close session using inside ip address and port - * and external ip address and port, use: - * vpp# snat deterministic close session in 3.3.3.3:3487 2.2.2.2:2387 - * @cliexend -?*/ -VLIB_CLI_COMMAND (snat_det_close_session_in_command, static) = { - .path = "snat deterministic close session in", - .short_help = "snat deterministic close session in " - "<in_addr>:<in_port> <ext_addr>:<ext_port>", - .function = snat_det_close_session_in_fn, -}; |