X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat.c;h=03e264eda3ba24564eb0afe4e9f1c58e54e2325f;hb=bb4e0225;hp=f9ecb943a90da3eea37e076383c6eb435dff202e;hpb=2bd3f8a525d5767ddcc19342167f78ad3c7d5997;p=vpp.git diff --git a/src/plugins/nat/nat.c b/src/plugins/nat/nat.c old mode 100644 new mode 100755 index f9ecb943a90..03e264eda3b --- a/src/plugins/nat/nat.c +++ b/src/plugins/nat/nat.c @@ -20,9 +20,15 @@ #include #include #include +#include #include #include #include +#include +#include +#include +#include +#include #include #include @@ -35,64 +41,128 @@ snat_main_t snat_main; VNET_FEATURE_INIT (ip4_snat_in2out, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-in2out", - .runs_before = VNET_FEATURES ("nat44-out2in"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_out2in, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-out2in", - .runs_before = VNET_FEATURES ("ip4-lookup"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + "ip4-dhcp-client-detect"), +}; +VNET_FEATURE_INIT (ip4_nat_classify, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-classify", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_det_in2out, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-det-in2out", - .runs_before = VNET_FEATURES ("nat44-det-out2in"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_det_out2in, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-det-out2in", - .runs_before = VNET_FEATURES ("ip4-lookup"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + "ip4-dhcp-client-detect"), +}; +VNET_FEATURE_INIT (ip4_nat_det_classify, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-det-classify", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), +}; +VNET_FEATURE_INIT (ip4_nat44_ed_in2out, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-ed-in2out", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), +}; +VNET_FEATURE_INIT (ip4_nat44_ed_out2in, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-ed-out2in", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + "ip4-dhcp-client-detect"), +}; +VNET_FEATURE_INIT (ip4_nat44_ed_classify, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-ed-classify", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-in2out-worker-handoff", - .runs_before = VNET_FEATURES ("nat44-out2in-worker-handoff"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_out2in_worker_handoff, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-out2in-worker-handoff", - .runs_before = VNET_FEATURES ("ip4-lookup"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + "ip4-dhcp-client-detect"), +}; +VNET_FEATURE_INIT (ip4_nat_handoff_classify, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-handoff-classify", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-in2out-fast", - .runs_before = VNET_FEATURES ("nat44-out2in-fast"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_out2in_fast, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-out2in-fast", - .runs_before = VNET_FEATURES ("ip4-lookup"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa", + "ip4-dhcp-client-detect"), }; VNET_FEATURE_INIT (ip4_snat_hairpin_dst, static) = { .arc_name = "ip4-unicast", .node_name = "nat44-hairpin-dst", - .runs_before = VNET_FEATURES ("ip4-lookup"), + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), +}; +VNET_FEATURE_INIT (ip4_nat44_ed_hairpin_dst, static) = { + .arc_name = "ip4-unicast", + .node_name = "nat44-ed-hairpin-dst", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), }; /* Hook up output features */ VNET_FEATURE_INIT (ip4_snat_in2out_output, static) = { .arc_name = "ip4-output", .node_name = "nat44-in2out-output", - .runs_before = VNET_FEATURES ("interface-output"), + .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_in2out_output_worker_handoff, static) = { .arc_name = "ip4-output", .node_name = "nat44-in2out-output-worker-handoff", - .runs_before = VNET_FEATURES ("interface-output"), + .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), }; VNET_FEATURE_INIT (ip4_snat_hairpin_src, static) = { .arc_name = "ip4-output", .node_name = "nat44-hairpin-src", - .runs_before = VNET_FEATURES ("interface-output"), + .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), +}; +VNET_FEATURE_INIT (ip4_nat44_ed_in2out_output, static) = { + .arc_name = "ip4-output", + .node_name = "nat44-ed-in2out-output", + .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), +}; +VNET_FEATURE_INIT (ip4_nat44_ed_hairpin_src, static) = { + .arc_name = "ip4-output", + .node_name = "nat44-ed-hairpin-src", + .runs_after = VNET_FEATURES ("acl-plugin-out-ip4-fa"), +}; + +/* Hook up ip4-local features */ +VNET_FEATURE_INIT (ip4_nat_hairpinning, static) = +{ + .arc_name = "ip4-local", + .node_name = "nat44-hairpinning", + .runs_before = VNET_FEATURES("ip4-local-end-of-arc"), +}; +VNET_FEATURE_INIT (ip4_nat44_ed_hairpinning, static) = +{ + .arc_name = "ip4-local", + .node_name = "nat44-ed-hairpinning", + .runs_before = VNET_FEATURES("ip4-local-end-of-arc"), }; @@ -103,6 +173,498 @@ VLIB_PLUGIN_REGISTER () = { }; /* *INDENT-ON* */ +vlib_node_registration_t nat44_classify_node; +vlib_node_registration_t nat44_ed_classify_node; +vlib_node_registration_t nat44_det_classify_node; +vlib_node_registration_t nat44_handoff_classify_node; + +typedef enum { + NAT44_CLASSIFY_NEXT_IN2OUT, + NAT44_CLASSIFY_NEXT_OUT2IN, + NAT44_CLASSIFY_N_NEXT, +} nat44_classify_next_t; + +void +nat_free_session_data (snat_main_t * sm, snat_session_t * s, u32 thread_index) +{ + snat_session_key_t key; + clib_bihash_kv_8_8_t kv; + nat_ed_ses_key_t ed_key; + clib_bihash_kv_16_8_t ed_kv; + snat_main_per_thread_data_t *tsm = + vec_elt_at_index (sm->per_thread_data, thread_index); + + if (is_fwd_bypass_session (s)) + { + ed_key.l_addr = s->in2out.addr; + ed_key.r_addr = s->ext_host_addr; + ed_key.l_port = s->in2out.port; + ed_key.r_port = s->ext_host_port; + ed_key.proto = snat_proto_to_ip_proto (s->in2out.protocol); + ed_key.fib_index = 0; + ed_kv.key[0] = ed_key.as_u64[0]; + ed_kv.key[1] = ed_key.as_u64[1]; + if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0)) + nat_log_warn ("in2out_ed key del failed"); + return; + } + + /* session lookup tables */ + if (is_ed_session (s)) + { + if (is_affinity_sessions (s)) + nat_affinity_unlock (s->ext_host_addr, s->out2in.addr, + s->in2out.protocol, s->out2in.port); + ed_key.l_addr = s->out2in.addr; + ed_key.r_addr = s->ext_host_addr; + ed_key.fib_index = s->out2in.fib_index; + if (snat_is_unk_proto_session (s)) + { + ed_key.proto = s->in2out.port; + ed_key.r_port = 0; + ed_key.l_port = 0; + } + else + { + ed_key.proto = snat_proto_to_ip_proto (s->in2out.protocol); + ed_key.l_port = s->out2in.port; + ed_key.r_port = s->ext_host_port; + } + ed_kv.key[0] = ed_key.as_u64[0]; + ed_kv.key[1] = ed_key.as_u64[1]; + if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &ed_kv, 0)) + nat_log_warn ("out2in_ed key del failed"); + ed_key.l_addr = s->in2out.addr; + ed_key.fib_index = s->in2out.fib_index; + if (!snat_is_unk_proto_session (s)) + ed_key.l_port = s->in2out.port; + if (is_twice_nat_session (s)) + { + ed_key.r_addr = s->ext_host_nat_addr; + ed_key.r_port = s->ext_host_nat_port; + } + ed_kv.key[0] = ed_key.as_u64[0]; + ed_kv.key[1] = ed_key.as_u64[1]; + if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &ed_kv, 0)) + nat_log_warn ("in2out_ed key del failed"); + } + else + { + kv.key = s->in2out.as_u64; + if (clib_bihash_add_del_8_8 (&tsm->in2out, &kv, 0)) + nat_log_warn ("in2out key del failed"); + kv.key = s->out2in.as_u64; + if (clib_bihash_add_del_8_8 (&tsm->out2in, &kv, 0)) + nat_log_warn ("out2in key del failed"); + } + + if (snat_is_unk_proto_session (s)) + return; + + /* 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); + + /* Twice NAT address and port for external host */ + if (is_twice_nat_session (s)) + { + key.protocol = s->in2out.protocol; + key.port = s->ext_host_nat_port; + key.addr.as_u32 = s->ext_host_nat_addr.as_u32; + snat_free_outside_address_and_port (sm->twice_nat_addresses, + thread_index, &key); + } + + if (snat_is_session_static (s)) + return; + + if (s->outside_address_index != ~0) + snat_free_outside_address_and_port (sm->addresses, thread_index, + &s->out2in); +} + +snat_user_t * +nat_user_get_or_create (snat_main_t *sm, ip4_address_t *addr, u32 fib_index, + u32 thread_index) +{ + snat_user_t *u = 0; + snat_user_key_t user_key; + clib_bihash_kv_8_8_t kv, value; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + dlist_elt_t * per_user_list_head_elt; + + user_key.addr.as_u32 = addr->as_u32; + user_key.fib_index = fib_index; + kv.key = user_key.as_u64; + + /* Ever heard of the "user" = src ip4 address before? */ + if (clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value)) + { + /* no, make a new one */ + pool_get (tsm->users, u); + memset (u, 0, sizeof (*u)); + u->addr.as_u32 = addr->as_u32; + u->fib_index = fib_index; + + pool_get (tsm->list_pool, per_user_list_head_elt); + + u->sessions_per_user_list_head_index = per_user_list_head_elt - + tsm->list_pool; + + clib_dlist_init (tsm->list_pool, u->sessions_per_user_list_head_index); + + kv.value = u - tsm->users; + + /* add user */ + if (clib_bihash_add_del_8_8 (&tsm->user_hash, &kv, 1)) + nat_log_warn ("user_hash keay add failed"); + } + else + { + u = pool_elt_at_index (tsm->users, value.value); + } + + return u; +} + +snat_session_t * +nat_session_alloc_or_recycle (snat_main_t *sm, snat_user_t *u, u32 thread_index) +{ + snat_session_t *s; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + u32 oldest_per_user_translation_list_index, session_index; + dlist_elt_t * oldest_per_user_translation_list_elt; + dlist_elt_t * per_user_translation_list_elt; + + /* Over quota? Recycle the least recently used translation */ + if ((u->nsessions + u->nstaticsessions) >= sm->max_translations_per_user) + { + oldest_per_user_translation_list_index = + clib_dlist_remove_head (tsm->list_pool, + u->sessions_per_user_list_head_index); + + ASSERT (oldest_per_user_translation_list_index != ~0); + + /* Add it back to the end of the LRU list */ + clib_dlist_addtail (tsm->list_pool, + u->sessions_per_user_list_head_index, + oldest_per_user_translation_list_index); + /* Get the list element */ + oldest_per_user_translation_list_elt = + pool_elt_at_index (tsm->list_pool, + oldest_per_user_translation_list_index); + + /* Get the session index from the list element */ + session_index = oldest_per_user_translation_list_elt->value; + + /* Get the session */ + s = pool_elt_at_index (tsm->sessions, session_index); + nat_free_session_data (sm, s, thread_index); + if (snat_is_session_static(s)) + u->nstaticsessions--; + else + u->nsessions--; + s->outside_address_index = ~0; + s->flags = 0; + s->total_bytes = 0; + s->total_pkts = 0; + s->state = 0; + s->ext_host_addr.as_u32 = 0; + s->ext_host_port = 0; + s->ext_host_nat_addr.as_u32 = 0; + s->ext_host_nat_port = 0; + } + else + { + pool_get (tsm->sessions, s); + memset (s, 0, sizeof (*s)); + s->outside_address_index = ~0; + + /* Create list elts */ + pool_get (tsm->list_pool, per_user_translation_list_elt); + clib_dlist_init (tsm->list_pool, + per_user_translation_list_elt - tsm->list_pool); + + per_user_translation_list_elt->value = s - tsm->sessions; + s->per_user_index = per_user_translation_list_elt - tsm->list_pool; + s->per_user_list_head_index = u->sessions_per_user_list_head_index; + + clib_dlist_addtail (tsm->list_pool, + s->per_user_list_head_index, + per_user_translation_list_elt - tsm->list_pool); + } + + return s; +} + +snat_session_t * +nat_ed_session_alloc (snat_main_t *sm, snat_user_t *u, u32 thread_index) +{ + snat_session_t *s; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + dlist_elt_t * per_user_translation_list_elt; + + if ((u->nsessions + u->nstaticsessions) >= sm->max_translations_per_user) + { + nat_log_warn ("max translations per user %U", format_ip4_address, &u->addr); + snat_ipfix_logging_max_entries_per_user (sm->max_translations_per_user, + u->addr.as_u32); + return 0; + } + + pool_get (tsm->sessions, s); + memset (s, 0, sizeof (*s)); + s->outside_address_index = ~0; + + /* Create list elts */ + pool_get (tsm->list_pool, per_user_translation_list_elt); + clib_dlist_init (tsm->list_pool, + per_user_translation_list_elt - tsm->list_pool); + + per_user_translation_list_elt->value = s - tsm->sessions; + s->per_user_index = per_user_translation_list_elt - tsm->list_pool; + s->per_user_list_head_index = u->sessions_per_user_list_head_index; + + clib_dlist_addtail (tsm->list_pool, + s->per_user_list_head_index, + per_user_translation_list_elt - tsm->list_pool); + + return s; +} + +typedef struct { + u8 next_in2out; +} nat44_classify_trace_t; + +static u8 * format_nat44_classify_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + nat44_classify_trace_t *t = va_arg (*args, nat44_classify_trace_t *); + char *next; + + next = t->next_in2out ? "nat44-in2out" : "nat44-out2in"; + + s = format (s, "nat44-classify: next %s", next); + + return s; +} + +static inline uword +nat44_classify_node_fn_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame, + int is_ed) +{ + u32 n_left_from, * from, * to_next; + nat44_classify_next_t next_index; + snat_main_t *sm = &snat_main; + snat_static_mapping_t *m; + u32 thread_index = vm->thread_index; + snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index]; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, + to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + u32 next0 = NAT44_CLASSIFY_NEXT_IN2OUT, sw_if_index0, rx_fib_index0; + ip4_header_t *ip0; + snat_address_t *ap; + snat_session_key_t m_key0; + clib_bihash_kv_8_8_t kv0, value0; + clib_bihash_kv_16_8_t ed_kv0, ed_value0; + udp_header_t *udp0; + + /* speculatively enqueue b0 to the current next frame */ + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ip0 = vlib_buffer_get_current (b0); + udp0 = ip4_next_header (ip0); + + if (is_ed) + { + sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; + rx_fib_index0 = + fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, + sw_if_index0); + make_ed_kv (&ed_kv0, &ip0->src_address, &ip0->dst_address, + ip0->protocol, rx_fib_index0, udp0->src_port, + udp0->dst_port); + if (!clib_bihash_search_16_8 (&tsm->in2out_ed, &ed_kv0, &ed_value0)) + goto enqueue0; + } + + vec_foreach (ap, sm->addresses) + { + if (ip0->dst_address.as_u32 == ap->addr.as_u32) + { + next0 = NAT44_CLASSIFY_NEXT_OUT2IN; + goto enqueue0; + } + } + + if (PREDICT_FALSE (pool_elts (sm->static_mappings))) + { + m_key0.addr = ip0->dst_address; + m_key0.port = 0; + m_key0.protocol = 0; + m_key0.fib_index = 0; + kv0.key = m_key0.as_u64; + if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv0, &value0)) + { + m = pool_elt_at_index (sm->static_mappings, value0.value); + if (m->local_addr.as_u32 != m->external_addr.as_u32) + next0 = NAT44_CLASSIFY_NEXT_OUT2IN; + goto enqueue0; + } + m_key0.port = clib_net_to_host_u16 (udp0->dst_port); + m_key0.protocol = ip_proto_to_snat_proto (ip0->protocol); + kv0.key = m_key0.as_u64; + if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv0, &value0)) + { + m = pool_elt_at_index (sm->static_mappings, value0.value); + if (m->local_addr.as_u32 != m->external_addr.as_u32) + next0 = NAT44_CLASSIFY_NEXT_OUT2IN; + } + } + + enqueue0: + if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + nat44_classify_trace_t *t = + vlib_add_trace (vm, node, b0, sizeof (*t)); + t->next_in2out = next0 == NAT44_CLASSIFY_NEXT_IN2OUT ? 1 : 0; + } + + /* verify speculative enqueue, maybe switch current next frame */ + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, + to_next, n_left_to_next, + bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + return frame->n_vectors; +} + +static uword +nat44_classify_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return nat44_classify_node_fn_inline (vm, node, frame, 0); +}; + +VLIB_REGISTER_NODE (nat44_classify_node) = { + .function = nat44_classify_node_fn, + .name = "nat44-classify", + .vector_size = sizeof (u32), + .format_trace = format_nat44_classify_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_next_nodes = NAT44_CLASSIFY_N_NEXT, + .next_nodes = { + [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-in2out", + [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-out2in", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nat44_classify_node, + nat44_classify_node_fn); +static uword +nat44_ed_classify_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return nat44_classify_node_fn_inline (vm, node, frame, 1); +}; + +VLIB_REGISTER_NODE (nat44_ed_classify_node) = { + .function = nat44_ed_classify_node_fn, + .name = "nat44-ed-classify", + .vector_size = sizeof (u32), + .format_trace = format_nat44_classify_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_next_nodes = NAT44_CLASSIFY_N_NEXT, + .next_nodes = { + [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-ed-in2out", + [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-ed-out2in", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_classify_node, + nat44_ed_classify_node_fn); + +static uword +nat44_det_classify_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return nat44_classify_node_fn_inline (vm, node, frame, 0); +}; + +VLIB_REGISTER_NODE (nat44_det_classify_node) = { + .function = nat44_det_classify_node_fn, + .name = "nat44-det-classify", + .vector_size = sizeof (u32), + .format_trace = format_nat44_classify_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_next_nodes = NAT44_CLASSIFY_N_NEXT, + .next_nodes = { + [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-det-in2out", + [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-det-out2in", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nat44_det_classify_node, + nat44_det_classify_node_fn); + +static uword +nat44_handoff_classify_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return nat44_classify_node_fn_inline (vm, node, frame, 0); +}; + +VLIB_REGISTER_NODE (nat44_handoff_classify_node) = { + .function = nat44_handoff_classify_node_fn, + .name = "nat44-handoff-classify", + .vector_size = sizeof (u32), + .format_trace = format_nat44_classify_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_next_nodes = NAT44_CLASSIFY_N_NEXT, + .next_nodes = { + [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-in2out-worker-handoff", + [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-out2in-worker-handoff", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nat44_handoff_classify_node, + nat44_handoff_classify_node_fn); + /** * @brief Add/del NAT address to FIB. * @@ -131,7 +693,7 @@ snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index, if (is_add) fib_table_entry_update_one_path(fib_index, &prefix, - FIB_SOURCE_PLUGIN_HI, + FIB_SOURCE_PLUGIN_LOW, (FIB_ENTRY_FLAG_CONNECTED | FIB_ENTRY_FLAG_LOCAL | FIB_ENTRY_FLAG_EXCLUSIVE), @@ -145,40 +707,52 @@ snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index, else fib_table_entry_delete(fib_index, &prefix, - FIB_SOURCE_PLUGIN_HI); + FIB_SOURCE_PLUGIN_LOW); } -void snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id) +int snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id, + u8 twice_nat) { snat_address_t * ap; snat_interface_t *i; + vlib_thread_main_t *tm = vlib_get_thread_main (); - if (vrf_id != ~0) - sm->vrf_mode = 1; + if (twice_nat && !sm->endpoint_dependent) + return VNET_API_ERROR_FEATURE_DISABLED; /* Check if address already exists */ - vec_foreach (ap, sm->addresses) + vec_foreach (ap, twice_nat ? sm->twice_nat_addresses : sm->addresses) { if (ap->addr.as_u32 == addr->as_u32) - return; + return VNET_API_ERROR_VALUE_EXIST; } - vec_add2 (sm->addresses, ap, 1); + if (twice_nat) + vec_add2 (sm->twice_nat_addresses, ap, 1); + else + 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); + fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, vrf_id, + FIB_SOURCE_PLUGIN_LOW); else ap->fib_index = ~0; #define _(N, i, n, s) \ - clib_bitmap_alloc (ap->busy_##n##_port_bitmap, 65535); + clib_bitmap_alloc (ap->busy_##n##_port_bitmap, 65535); \ + ap->busy_##n##_ports = 0; \ + vec_validate_init_empty (ap->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0); foreach_snat_protocol #undef _ + if (twice_nat) + return 0; + /* Add external address to FIB */ pool_foreach (i, sm->interfaces, ({ - if (i->is_inside) + if (nat_interface_is_inside(i) || sm->out2in_dpo) continue; snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1); @@ -186,12 +760,14 @@ void snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id) })); pool_foreach (i, sm->output_feature_interfaces, ({ - if (i->is_inside) + if (nat_interface_is_inside(i) || sm->out2in_dpo) continue; snat_add_del_addr_to_fib(addr, 32, i->sw_if_index, 1); break; })); + + return 0; } static int is_snat_address_used_in_static_mapping (snat_main_t *sm, @@ -224,7 +800,8 @@ snat_add_static_mapping_when_resolved (snat_main_t * sm, u32 vrf_id, snat_protocol_t proto, int addr_only, - int is_add) + int is_add, + u8 * tag) { snat_static_map_resolve_t *rp; @@ -237,6 +814,18 @@ snat_add_static_mapping_when_resolved (snat_main_t * sm, rp->proto = proto; rp->addr_only = addr_only; rp->is_add = is_add; + rp->tag = vec_dup (tag); +} + +static u32 get_thread_idx_by_port(u16 e_port) +{ + snat_main_t * sm = &snat_main; + u32 thread_idx = sm->num_workers; + if (sm->num_workers > 1) + { + thread_idx = sm->first_worker_index + sm->workers[(e_port - 1024) / sm->port_per_thread]; + } + return thread_idx; } /** @@ -252,12 +841,21 @@ snat_add_static_mapping_when_resolved (snat_main_t * sm, * @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. + * @param twice_nat If value is TWICE_NAT then translate external host address + * and port. + * If value is TWICE_NAT_SELF then translate external host + * address and port whenever external host address equals + * local address of internal host. + * @param out2in_only If 1 rule match only out2in direction + * @param tag - opaque string tag * * @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) + u32 sw_if_index, snat_protocol_t proto, int is_add, + twice_nat_type_t twice_nat, u8 out2in_only, + u8 * tag) { snat_main_t * sm = &snat_main; snat_static_mapping_t *m; @@ -268,32 +866,94 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, uword * p; snat_interface_t *interface; int i; + snat_main_per_thread_data_t *tsm; + snat_user_key_t u_key; + snat_user_t *u; + dlist_elt_t * head, * elt; + u32 elt_index, head_index; + u32 ses_index; + u64 user_index; + snat_session_t * s; + snat_static_map_resolve_t *rp, *rp_match = 0; + + if (!sm->endpoint_dependent) + { + if (twice_nat || out2in_only) + return VNET_API_ERROR_FEATURE_DISABLED; + } /* If the external address is a specific interface address */ if (sw_if_index != ~0) { ip4_address_t * first_int_addr; + for (i = 0; i < vec_len (sm->to_resolve); i++) + { + rp = sm->to_resolve + i; + if (rp->sw_if_index != sw_if_index || + rp->l_addr.as_u32 != l_addr.as_u32 || + rp->vrf_id != vrf_id || rp->addr_only != addr_only) + continue; + + if (!addr_only) + { + if (rp->l_port != l_port || rp->e_port != e_port || rp->proto != proto) + continue; + } + + rp_match = rp; + break; + } + /* 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) + if (is_add) { + if (rp_match) + return VNET_API_ERROR_VALUE_EXIST; + 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; + addr_only, is_add, tag); + + /* DHCP resolution required? */ + if (first_int_addr == 0) + { + return 0; + } + else + { + e_addr.as_u32 = first_int_addr->as_u32; + /* Identity mapping? */ + if (l_addr.as_u32 == 0) + l_addr.as_u32 = e_addr.as_u32; + } + } + else + { + if (!rp_match) + return VNET_API_ERROR_NO_SUCH_ENTRY; + + vec_del1 (sm->to_resolve, i); + + if (first_int_addr) + { + e_addr.as_u32 = first_int_addr->as_u32; + /* Identity mapping? */ + if (l_addr.as_u32 == 0) + l_addr.as_u32 = e_addr.as_u32; + } + else + 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; + m_key.fib_index = 0; kv.key = m_key.as_u64; if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value)) m = 0; @@ -305,6 +965,9 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, if (m) return VNET_API_ERROR_VALUE_EXIST; + if (twice_nat && addr_only) + return VNET_API_ERROR_UNSUPPORTED; + /* Convert VRF id to FIB index */ if (vrf_id != ~0) { @@ -320,9 +983,20 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, vrf_id = sm->inside_vrf_id; } + if (!out2in_only) + { + m_key.addr = l_addr; + m_key.port = addr_only ? 0 : l_port; + m_key.protocol = addr_only ? 0 : proto; + m_key.fib_index = fib_index; + kv.key = m_key.as_u64; + if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value)) + return VNET_API_ERROR_VALUE_EXIST; + } + /* 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)) + if (!(addr_only || sm->static_mapping_only || out2in_only)) { for (i = 0; i < vec_len (sm->addresses); i++) { @@ -338,29 +1012,54 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, 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++; \ + { \ + a->busy_##n##_ports++; \ + a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]++; \ + } \ break; foreach_snat_protocol #undef _ default: - clib_warning("unknown_protocol"); + nat_log_info ("unknown protocol"); return VNET_API_ERROR_INVALID_VALUE_2; } break; } } /* External address must be allocated */ - if (!a) - return VNET_API_ERROR_NO_SUCH_ENTRY; + if (!a && (l_addr.as_u32 != e_addr.as_u32)) + { + if (sw_if_index != ~0) + { + for (i = 0; i < vec_len (sm->to_resolve); i++) + { + rp = sm->to_resolve + i; + if (rp->addr_only) + continue; + if (rp->sw_if_index != sw_if_index && + rp->l_addr.as_u32 != l_addr.as_u32 && + rp->vrf_id != vrf_id && rp->l_port != l_port && + rp->e_port != e_port && rp->proto != proto) + continue; + + vec_del1 (sm->to_resolve, i); + break; + } + } + return VNET_API_ERROR_NO_SUCH_ENTRY; + } } pool_get (sm->static_mappings, m); memset (m, 0, sizeof (*m)); + m->tag = vec_dup (tag); 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; + m->twice_nat = twice_nat; + m->out2in_only = out2in_only; if (!addr_only) { m->local_port = l_port; @@ -368,57 +1067,84 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, m->proto = proto; } + if (sm->num_workers > 1) + { + ip4_header_t ip = { + .src_address = m->local_addr, + }; + vec_add1 (m->workers, sm->worker_in2out_cb (&ip, m->fib_index)); + tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]); + } + else + tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); + 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); + if (!out2in_only) + 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; + m_key.fib_index = 0; 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) + /* Delete dynamic sessions matching local address (+ local port) */ + if (!(sm->static_mapping_only)) { - snat_user_key_t w_key0; - snat_worker_key_t w_key1; + 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 (&tsm->user_hash, &kv, &value)) + { + user_index = value.value; + u = pool_elt_at_index (tsm->users, user_index); + if (u->nsessions) + { + 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); + elt = pool_elt_at_index (tsm->list_pool, elt->next); + ses_index = elt->value; - w_key0.addr = m->local_addr; - w_key0.fib_index = m->fib_index; - kv.key = w_key0.as_u64; + if (snat_is_session_static (s)) + continue; - 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)]; + if (!addr_only && (clib_net_to_host_u16 (s->in2out.port) != m->local_port)) + continue; - clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv, 1); - } - else - { - kv.value = value.value; - } + nat_free_session_data (sm, s, tsm - sm->per_thread_data); + nat44_delete_session (sm, s, tsm - sm->per_thread_data); - 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); + if (!addr_only && !sm->endpoint_dependent) + break; + } + } + } } } else { if (!m) - return VNET_API_ERROR_NO_SUCH_ENTRY; + { + if (sw_if_index != ~0) + return 0; + else + return VNET_API_ERROR_NO_SUCH_ENTRY; + } /* Free external address port */ - if (!addr_only && !(sm->static_mapping_only)) + if (!(addr_only || sm->static_mapping_only || out2in_only)) { for (i = 0; i < vec_len (sm->addresses); i++) { @@ -431,12 +1157,15 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, 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--; \ + { \ + a->busy_##n##_ports--; \ + a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]--; \ + } \ break; foreach_snat_protocol #undef _ default: - clib_warning("unknown_protocol"); + nat_log_info ("unknown protocol"); return VNET_API_ERROR_INVALID_VALUE_2; } break; @@ -444,16 +1173,22 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, } } + if (sm->num_workers > 1) + tsm = vec_elt_at_index (sm->per_thread_data, m->workers[0]); + else + tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); + 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); + if (!out2in_only) + 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; + m_key.fib_index = 0; kv.key = m_key.as_u64; clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 0); @@ -461,25 +1196,12 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, 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)) + if (!clib_bihash_search_8_8 (&tsm->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) { @@ -491,87 +1213,45 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr, 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); + elt = pool_elt_at_index (tsm->list_pool, elt->next); ses_index = elt->value; if (!addr_only) { - if ((s->out2in.addr.as_u32 != e_addr.as_u32) && + 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 (is_lb_session (s)) + continue; - if (!addr_only) + if (!snat_is_session_static (s)) + continue; + + nat_free_session_data (sm, s, tsm - sm->per_thread_data); + nat44_delete_session (sm, s, tsm - sm->per_thread_data); + + if (!addr_only && !sm->endpoint_dependent) break; } - if (addr_only) - { - pool_put (tsm->users, u); - clib_bihash_add_del_8_8 (&sm->user_hash, &kv, 0); - } } } } + vec_free (m->tag); + vec_free (m->workers); /* Delete static mapping from pool */ pool_put (sm->static_mappings, m); } - if (!addr_only) + if (!addr_only || (l_addr.as_u32 == e_addr.as_u32)) return 0; /* Add/delete external address to FIB */ pool_foreach (interface, sm->interfaces, ({ - if (interface->is_inside) + if (nat_interface_is_inside(interface) || sm->out2in_dpo) continue; snat_add_del_addr_to_fib(&e_addr, 32, interface->sw_if_index, is_add); @@ -579,7 +1259,7 @@ delete: })); pool_foreach (interface, sm->output_feature_interfaces, ({ - if (interface->is_inside) + if (nat_interface_is_inside(interface) || sm->out2in_dpo) continue; snat_add_del_addr_to_fib(&e_addr, 32, interface->sw_if_index, is_add); @@ -589,25 +1269,288 @@ delete: return 0; } -int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm) +int nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, + snat_protocol_t proto, + nat44_lb_addr_port_t *locals, u8 is_add, + twice_nat_type_t twice_nat, u8 out2in_only, + u8 *tag, u32 affinity) +{ + 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; + int i; + nat44_lb_addr_port_t *local; + u32 elt_index, head_index, ses_index; + snat_main_per_thread_data_t *tsm; + snat_user_key_t u_key; + snat_user_t *u; + snat_session_t * s; + dlist_elt_t * head, * elt; + uword *bitmap = 0; + + if (!sm->endpoint_dependent) + return VNET_API_ERROR_FEATURE_DISABLED; + + m_key.addr = e_addr; + m_key.port = e_port; + m_key.protocol = proto; + m_key.fib_index = 0; + 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; + + if (vec_len (locals) < 2) + return VNET_API_ERROR_INVALID_VALUE; + + /* Find external address in allocated addresses and reserve port for + address and port pair mapping when dynamic translations enabled */ + if (!(sm->static_mapping_only || out2in_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++; \ + a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]++; \ + } \ + break; + foreach_snat_protocol +#undef _ + default: + nat_log_info ("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->tag = vec_dup (tag); + m->external_addr = e_addr; + m->addr_only = 0; + m->external_port = e_port; + m->proto = proto; + m->twice_nat = twice_nat; + m->out2in_only = out2in_only; + m->affinity = affinity; + + if (affinity) + m->affinity_per_service_list_head_index = + nat_affinity_get_per_service_list_head_index(); + else + m->affinity_per_service_list_head_index = ~0; + + m_key.addr = m->external_addr; + m_key.port = m->external_port; + m_key.protocol = m->proto; + m_key.fib_index = 0; + kv.key = m_key.as_u64; + kv.value = m - sm->static_mappings; + if (clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 1)) + { + nat_log_err ("static_mapping_by_external key add failed"); + return VNET_API_ERROR_UNSPECIFIED; + } + + m_key.fib_index = m->fib_index; + for (i = 0; i < vec_len (locals); i++) + { + locals[i].fib_index = fib_table_find_or_create_and_lock ( + FIB_PROTOCOL_IP4, locals[i].vrf_id, FIB_SOURCE_PLUGIN_LOW); + m_key.addr = locals[i].addr; + m_key.fib_index = locals[i].fib_index; + if (!out2in_only) + { + m_key.port = locals[i].port; + 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); + } + locals[i].prefix = (i == 0) ? locals[i].probability :\ + (locals[i - 1].prefix + locals[i].probability); + vec_add1 (m->locals, locals[i]); + if (sm->num_workers > 1) + { + ip4_header_t ip = { + .src_address = locals[i].addr, + }; + bitmap = clib_bitmap_set ( + bitmap, sm->worker_in2out_cb (&ip, m->fib_index), 1); + } + } + + /* Assign workers */ + if (sm->num_workers > 1) + { + clib_bitmap_foreach (i, bitmap, + ({ + vec_add1(m->workers, i); + })); + } + } + else + { + if (!m) + return VNET_API_ERROR_NO_SUCH_ENTRY; + + /* Free external address port */ + if (!(sm->static_mapping_only || out2in_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--; \ + a->busy_##n##_ports_per_thread[get_thread_idx_by_port(e_port)]--; \ + } \ + break; + foreach_snat_protocol +#undef _ + default: + nat_log_info ("unknown protocol"); + return VNET_API_ERROR_INVALID_VALUE_2; + } + break; + } + } + } + + m_key.addr = m->external_addr; + m_key.port = m->external_port; + m_key.protocol = m->proto; + m_key.fib_index = 0; + kv.key = m_key.as_u64; + if (clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 0)) + { + nat_log_err ("static_mapping_by_external key del failed"); + return VNET_API_ERROR_UNSPECIFIED; + } + + vec_foreach (local, m->locals) + { + fib_table_unlock (local->fib_index, FIB_PROTOCOL_IP4, + FIB_SOURCE_PLUGIN_LOW); + m_key.addr = local->addr; + if (!out2in_only) + { + m_key.port = local->port; + m_key.fib_index = local->fib_index; + kv.key = m_key.as_u64; + if (clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 0)) + { + nat_log_err ("static_mapping_by_local key del failed"); + return VNET_API_ERROR_UNSPECIFIED; + } + } + + if (sm->num_workers > 1) + { + ip4_header_t ip = { + .src_address = local->addr, + }; + tsm = vec_elt_at_index (sm->per_thread_data, + sm->worker_in2out_cb (&ip, m->fib_index)); + } + else + tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); + + /* Delete sessions */ + u_key.addr = local->addr; + u_key.fib_index = m->fib_index; + kv.key = u_key.as_u64; + if (!clib_bihash_search_8_8 (&tsm->user_hash, &kv, &value)) + { + u = pool_elt_at_index (tsm->users, value.value); + 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); + elt = pool_elt_at_index (tsm->list_pool, elt->next); + ses_index = elt->value; + + if (!(is_lb_session (s))) + continue; + + if ((s->in2out.addr.as_u32 != local->addr.as_u32) || + (clib_net_to_host_u16 (s->in2out.port) != local->port)) + continue; + + nat_free_session_data (sm, s, tsm - sm->per_thread_data); + nat44_delete_session (sm, s, tsm - sm->per_thread_data); + } + } + } + } + if (m->affinity) + nat_affinity_flush_service (m->affinity_per_service_list_head_index); + vec_free(m->locals); + vec_free(m->tag); + vec_free(m->workers); + + pool_put (sm->static_mappings, m); + } + + return 0; +} + +int +snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm, + u8 twice_nat) { 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; + snat_address_t *addresses = twice_nat ? sm->twice_nat_addresses : sm->addresses; /* Find SNAT address */ - for (i=0; i < vec_len (sm->addresses); i++) + for (i=0; i < vec_len (addresses); i++) { - if (sm->addresses[i].addr.as_u32 == addr.as_u32) + if (addresses[i].addr.as_u32 == addr.as_u32) { - a = sm->addresses + i; + a = addresses + i; break; } } @@ -622,7 +1565,8 @@ int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm) (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); + m->proto, 0, m->twice_nat, + m->out2in_only, m->tag); })); } else @@ -630,13 +1574,14 @@ int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm) /* 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"); + nat_log_notice ("address used in static mapping"); return VNET_API_ERROR_UNSPECIFIED; } } if (a->fib_index != ~0) - fib_table_unlock(a->fib_index, FIB_PROTOCOL_IP4); + fib_table_unlock(a->fib_index, FIB_PROTOCOL_IP4, + FIB_SOURCE_PLUGIN_LOW); /* Delete sessions using address */ if (a->busy_tcp_ports || a->busy_udp_ports || a->busy_icmp_ports) @@ -646,69 +1591,34 @@ int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm) 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); - } + ses->outside_address_index = ~0; + nat_free_session_data (sm, ses, tsm - sm->per_thread_data); 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]); + { + ses = pool_elt_at_index (tsm->sessions, ses_index[0]); + nat44_delete_session (sm, ses, tsm - sm->per_thread_data); + } vec_free (ses_to_be_removed); } } - vec_del1 (sm->addresses, i); + if (twice_nat) + { + vec_del1 (sm->twice_nat_addresses, i); + return 0; + } + else + vec_del1 (sm->addresses, i); /* Delete external address from FIB */ pool_foreach (interface, sm->interfaces, ({ - if (interface->is_inside) + if (nat_interface_is_inside(interface) || sm->out2in_dpo) continue; snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0); @@ -716,7 +1626,7 @@ int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm) })); pool_foreach (interface, sm->output_feature_interfaces, ({ - if (interface->is_inside) + if (nat_interface_is_inside(interface) || sm->out2in_dpo) continue; snat_add_del_addr_to_fib(&addr, 32, interface->sw_if_index, 0); @@ -730,10 +1640,22 @@ 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; + const char * feature_name, *del_feature_name; snat_address_t * ap; snat_static_mapping_t * m; snat_det_map_t * dm; + nat_outside_fib_t *outside_fib; + u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, + sw_if_index); + + if (sm->out2in_dpo && !is_inside) + return VNET_API_ERROR_UNSUPPORTED; + + pool_foreach (i, sm->output_feature_interfaces, + ({ + if (i->sw_if_index == sw_if_index) + return VNET_API_ERROR_VALUE_EXIST; + })); if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking)) feature_name = is_inside ? "nat44-in2out-fast" : "nat44-out2in-fast"; @@ -743,27 +1665,161 @@ int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del) feature_name = is_inside ? "nat44-in2out-worker-handoff" : "nat44-out2in-worker-handoff"; else if (sm->deterministic) feature_name = is_inside ? "nat44-det-in2out" : "nat44-det-out2in"; + else if (sm->endpoint_dependent) + feature_name = is_inside ? "nat44-ed-in2out" : "nat44-ed-out2in"; else feature_name = is_inside ? "nat44-in2out" : "nat44-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); + sm->fq_in2out_index = vlib_frame_queue_main_init (sm->in2out_node_index, + NAT_FQ_NELTS); 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); + sm->fq_out2in_index = vlib_frame_queue_main_init (sm->out2in_node_index, + NAT_FQ_NELTS); + if (!is_inside) + { + vec_foreach (outside_fib, sm->outside_fibs) + { + if (outside_fib->fib_index == fib_index) + { + if (is_del) + { + outside_fib->refcount--; + if (!outside_fib->refcount) + vec_del1 (sm->outside_fibs, outside_fib - sm->outside_fibs); + } + else + outside_fib->refcount++; + goto feature_set; + } + } + if (!is_del) + { + vec_add2 (sm->outside_fibs, outside_fib, 1); + outside_fib->refcount = 1; + outside_fib->fib_index = fib_index; + } + } +feature_set: pool_foreach (i, sm->interfaces, ({ if (i->sw_if_index == sw_if_index) { if (is_del) - pool_put (sm->interfaces, i); + { + if (nat_interface_is_inside(i) && nat_interface_is_outside(i)) + { + if (is_inside) + i->flags &= ~NAT_INTERFACE_FLAG_IS_INSIDE; + else + i->flags &= ~NAT_INTERFACE_FLAG_IS_OUTSIDE; + + if (sm->num_workers > 1 && !sm->deterministic) + { + del_feature_name = "nat44-handoff-classify"; + feature_name = !is_inside ? "nat44-in2out-worker-handoff" : + "nat44-out2in-worker-handoff"; + } + else if (sm->deterministic) + { + del_feature_name = "nat44-det-classify"; + feature_name = !is_inside ? "nat44-det-in2out" : + "nat44-det-out2in"; + } + else if (sm->endpoint_dependent) + { + del_feature_name = "nat44-ed-classify"; + feature_name = !is_inside ? "nat44-ed-in2out" : + "nat44-ed-out2in"; + } + else + { + del_feature_name = "nat44-classify"; + feature_name = !is_inside ? "nat44-in2out" : "nat44-out2in"; + } + + vnet_feature_enable_disable ("ip4-unicast", del_feature_name, + sw_if_index, 0, 0, 0); + vnet_feature_enable_disable ("ip4-unicast", feature_name, + sw_if_index, 1, 0, 0); + if (!is_inside) + { + if (sm->endpoint_dependent) + vnet_feature_enable_disable ("ip4-local", + "nat44-ed-hairpinning", + sw_if_index, 1, 0, 0); + else if (!sm->deterministic) + vnet_feature_enable_disable ("ip4-local", + "nat44-hairpinning", + sw_if_index, 1, 0, 0); + } + } + else + { + vnet_feature_enable_disable ("ip4-unicast", feature_name, + sw_if_index, 0, 0, 0); + pool_put (sm->interfaces, i); + if (is_inside) + { + if (sm->endpoint_dependent) + vnet_feature_enable_disable ("ip4-local", + "nat44-ed-hairpinning", + sw_if_index, 0, 0, 0); + else if (!sm->deterministic) + vnet_feature_enable_disable ("ip4-local", + "nat44-hairpinning", + sw_if_index, 0, 0, 0); + } + } + } else - return VNET_API_ERROR_VALUE_EXIST; + { + if ((nat_interface_is_inside(i) && is_inside) || + (nat_interface_is_outside(i) && !is_inside)) + return 0; + + if (sm->num_workers > 1 && !sm->deterministic) + { + del_feature_name = !is_inside ? "nat44-in2out-worker-handoff" : + "nat44-out2in-worker-handoff"; + feature_name = "nat44-handoff-classify"; + } + else if (sm->deterministic) + { + del_feature_name = !is_inside ? "nat44-det-in2out" : + "nat44-det-out2in"; + feature_name = "nat44-det-classify"; + } + else if (sm->endpoint_dependent) + { + del_feature_name = !is_inside ? "nat44-ed-in2out" : + "nat44-ed-out2in"; + feature_name = "nat44-ed-classify"; + } + else + { + del_feature_name = !is_inside ? "nat44-in2out" : "nat44-out2in"; + feature_name = "nat44-classify"; + } + + vnet_feature_enable_disable ("ip4-unicast", del_feature_name, + sw_if_index, 0, 0, 0); + vnet_feature_enable_disable ("ip4-unicast", feature_name, + sw_if_index, 1, 0, 0); + if (!is_inside) + { + if (sm->endpoint_dependent) + vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning", + sw_if_index, 0, 0, 0); + else if (!sm->deterministic) + vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning", + sw_if_index, 0, 0, 0); + } + goto set_flags; + } goto fib; } @@ -774,19 +1830,36 @@ int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del) pool_get (sm->interfaces, i); i->sw_if_index = sw_if_index; - i->is_inside = is_inside; + i->flags = 0; + vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index, 1, 0, 0); - /* Add/delete external addresses to FIB */ -fib: + if (is_inside && !sm->out2in_dpo) + { + if (sm->endpoint_dependent) + vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning", + sw_if_index, 1, 0, 0); + else if (!sm->deterministic) + vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning", + sw_if_index, 1, 0, 0); + } + +set_flags: if (is_inside) - return 0; + { + i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE; + return 0; + } + else + i->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE; + /* Add/delete external addresses to FIB */ +fib: 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)) + if (!(m->addr_only) || (m->local_addr.as_u32 == m->external_addr.as_u32)) continue; snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del); @@ -813,18 +1886,35 @@ int snat_interface_add_del_output_feature (u32 sw_if_index, (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))) return VNET_API_ERROR_UNSUPPORTED; + pool_foreach (i, sm->interfaces, + ({ + if (i->sw_if_index == sw_if_index) + return VNET_API_ERROR_VALUE_EXIST; + })); + if (is_inside) { - vnet_feature_enable_disable ("ip4-unicast", "nat44-hairpin-dst", - sw_if_index, !is_del, 0, 0); - vnet_feature_enable_disable ("ip4-output", "nat44-hairpin-src", - sw_if_index, !is_del, 0, 0); + if (sm->endpoint_dependent) + { + vnet_feature_enable_disable ("ip4-unicast", "nat44-ed-hairpin-dst", + sw_if_index, !is_del, 0, 0); + vnet_feature_enable_disable ("ip4-output", "nat44-ed-hairpin-src", + sw_if_index, !is_del, 0, 0); + } + else + { + vnet_feature_enable_disable ("ip4-unicast", "nat44-hairpin-dst", + sw_if_index, !is_del, 0, 0); + vnet_feature_enable_disable ("ip4-output", "nat44-hairpin-src", + sw_if_index, !is_del, 0, 0); + } goto fq; } if (sm->num_workers > 1) { - vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in-worker-handoff", + vnet_feature_enable_disable ("ip4-unicast", + "nat44-out2in-worker-handoff", sw_if_index, !is_del, 0, 0); vnet_feature_enable_disable ("ip4-output", "nat44-in2out-output-worker-handoff", @@ -832,10 +1922,20 @@ int snat_interface_add_del_output_feature (u32 sw_if_index, } else { - vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in", sw_if_index, - !is_del, 0, 0); - vnet_feature_enable_disable ("ip4-output", "nat44-in2out-output", - sw_if_index, !is_del, 0, 0); + if (sm->endpoint_dependent) + { + vnet_feature_enable_disable ("ip4-unicast", "nat44-ed-out2in", + sw_if_index, !is_del, 0, 0); + vnet_feature_enable_disable ("ip4-output", "nat44-ed-in2out-output", + sw_if_index, !is_del, 0, 0); + } + else + { + vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in", + sw_if_index, !is_del, 0, 0); + vnet_feature_enable_disable ("ip4-output", "nat44-in2out-output", + sw_if_index, !is_del, 0, 0); + } } fq: @@ -864,7 +1964,11 @@ fq: pool_get (sm->output_feature_interfaces, i); i->sw_if_index = sw_if_index; - i->is_inside = is_inside; + i->flags = 0; + if (is_inside) + i->flags |= NAT_INTERFACE_FLAG_IS_INSIDE; + else + i->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE; /* Add/delete external addresses to FIB */ fib: @@ -876,7 +1980,7 @@ fib: pool_foreach (m, sm->static_mappings, ({ - if (!(m->addr_only)) + if (!(m->addr_only) || (m->local_addr.as_u32 == m->external_addr.as_u32)) continue; snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del); @@ -900,7 +2004,7 @@ int snat_set_workers (uword * bitmap) clib_bitmap_foreach (i, bitmap, ({ vec_add1(sm->workers, i); - sm->per_thread_data[i].snat_thread_index = j; + sm->per_thread_data[sm->first_worker_index + i].snat_thread_index = j; j++; })); @@ -920,6 +2024,24 @@ snat_ip4_add_del_interface_address_cb (ip4_main_t * im, u32 if_address_index, u32 is_delete); +static void +nat_ip4_add_del_addr_only_sm_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 int +nat_alloc_addr_and_port_default (snat_address_t * addresses, + u32 fib_index, + u32 thread_index, + snat_session_key_t * k, + u32 * address_indexp, + u16 port_per_thread, + u32 snat_thread_index); + static clib_error_t * snat_init (vlib_main_t * vm) { snat_main_t * sm = &snat_main; @@ -932,6 +2054,7 @@ static clib_error_t * snat_init (vlib_main_t * vm) uword *bitmap = 0; u32 i; ip4_add_del_interface_address_callback_t cb4; + vlib_node_t * error_drop_node; sm->vlib_main = vm; sm->vnet_main = vnet_get_main(); @@ -939,7 +2062,6 @@ static clib_error_t * snat_init (vlib_main_t * vm) 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; @@ -950,6 +2072,13 @@ static clib_error_t * snat_init (vlib_main_t * vm) sm->tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT; sm->tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT; sm->icmp_timeout = SNAT_ICMP_TIMEOUT; + sm->alloc_addr_and_port = nat_alloc_addr_and_port_default; + sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT; + sm->forwarding_enabled = 0; + sm->log_class = vlib_log_register_class ("nat", 0); + error_drop_node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); + sm->error_node_index = error_drop_node->index; + sm->mss_clamping = 0; p = hash_get_mem (tm->thread_registrations_by_name, "workers"); if (p) @@ -987,26 +2116,48 @@ static clib_error_t * snat_init (vlib_main_t * vm) vec_add1 (im->add_del_interface_address_callbacks, cb4); + cb4.function = nat_ip4_add_del_addr_only_sm_cb; + cb4.function_opaque = 0; + + vec_add1 (im->add_del_interface_address_callbacks, cb4); + + nat_dpo_module_init (); + /* Init IPFIX logging */ snat_ipfix_logging_init(vm); + /* Init NAT64 */ error = nat64_init(vm); + if (error) + return error; - return error; + dslite_init(vm); + + nat66_init(); + + /* Init virtual fragmenentation reassembly */ + return nat_reass_init(vm); } VLIB_INIT_FUNCTION (snat_init); -void snat_free_outside_address_and_port (snat_main_t * sm, - snat_session_key_t * k, - u32 address_index) +void snat_free_outside_address_and_port (snat_address_t * addresses, + u32 thread_index, + snat_session_key_t * k) { snat_address_t *a; + u32 address_index; u16 port_host_byte_order = clib_net_to_host_u16 (k->port); - ASSERT (address_index < vec_len (sm->addresses)); + for (address_index = 0; address_index < vec_len (addresses); address_index++) + { + if (addresses[address_index].addr.as_u32 == k->addr.as_u32) + break; + } + + ASSERT (address_index < vec_len (addresses)); - a = sm->addresses + address_index; + a = addresses + address_index; switch (k->protocol) { @@ -1017,11 +2168,12 @@ void snat_free_outside_address_and_port (snat_main_t * sm, clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \ port_host_byte_order, 0); \ a->busy_##n##_ports--; \ + a->busy_##n##_ports_per_thread[thread_index]--; \ break; foreach_snat_protocol #undef _ default: - clib_warning("unknown_protocol"); + nat_log_info ("unknown protocol"); return; } } @@ -1035,6 +2187,8 @@ void snat_free_outside_address_and_port (snat_main_t * sm, * @param by_external If 0 match by local address otherwise match by external * address. * @param is_addr_only If matched mapping is address only + * @param twice_nat If matched mapping is twice NAT. + * @param lb If matched mapping is load-balanced. * * @returns 0 if match found otherwise 1. */ @@ -1042,20 +2196,28 @@ 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) + u8 *is_addr_only, + twice_nat_type_t *twice_nat, + lb_nat_type_t *lb, + ip4_address_t * ext_host_addr) { 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; + u32 rand, lo = 0, hi, mid; + u8 backend_index; + m_key.fib_index = match.fib_index; if (by_external) - mapping_hash = &sm->static_mapping_by_external; + { + mapping_hash = &sm->static_mapping_by_external; + m_key.fib_index = 0; + } 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; @@ -1073,11 +2235,61 @@ int snat_static_mapping_match (snat_main_t * sm, 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; + if (vec_len (m->locals)) + { + if (PREDICT_FALSE(lb != 0)) + *lb = m->affinity ? AFFINITY_LB_NAT : LB_NAT; + if (m->affinity) + { + if (nat_affinity_find_and_lock (ext_host_addr[0], match.addr, + match.protocol, match.port, &backend_index)) + goto get_local; + + mapping->addr = m->locals[backend_index].addr; + mapping->port = clib_host_to_net_u16 (m->locals[backend_index].port); + mapping->fib_index = m->locals[backend_index].fib_index; + goto end; + } +get_local: + hi = vec_len (m->locals) - 1; + rand = 1 + (random_u32 (&sm->random_seed) % m->locals[hi].prefix); + while (lo < hi) + { + mid = ((hi - lo) >> 1) + lo; + (rand > m->locals[mid].prefix) ? (lo = mid + 1) : (hi = mid); + } + if (!(m->locals[lo].prefix >= rand)) + return 1; + if (PREDICT_FALSE (sm->num_workers > 1)) + { + ip4_header_t ip = { + .src_address = m->locals[lo].addr, + }; + if (sm->worker_in2out_cb (&ip, m->fib_index) != vlib_get_thread_index ()) + goto get_local; + } + mapping->addr = m->locals[lo].addr; + mapping->port = clib_host_to_net_u16 (m->locals[lo].port); + mapping->fib_index = m->locals[lo].fib_index; + if (m->affinity) + { + if (nat_affinity_create_and_lock (ext_host_addr[0], match.addr, + match.protocol, match.port, lo, m->affinity, + m->affinity_per_service_list_head_index)) + nat_log_info ("create affinity record failed"); + } + } + else + { + if (PREDICT_FALSE(lb != 0)) + *lb = NO_LB_NAT; + mapping->fib_index = m->fib_index; + 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->protocol = m->proto; } else { @@ -1088,289 +2300,259 @@ int snat_static_mapping_match (snat_main_t * sm, mapping->fib_index = sm->outside_fib_index; } +end: if (PREDICT_FALSE(is_addr_only != 0)) *is_addr_only = m->addr_only; + if (PREDICT_FALSE(twice_nat != 0)) + *twice_nat = m->twice_nat; + return 0; } static_always_inline u16 -snat_random_port (snat_main_t * sm, u16 min, u16 max) +snat_random_port (u16 min, u16 max) { + snat_main_t *sm = &snat_main; 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 +snat_alloc_outside_address_and_port (snat_address_t * addresses, + u32 fib_index, + u32 thread_index, + snat_session_key_t * k, + u32 * address_indexp, + u16 port_per_thread, + u32 snat_thread_index) { - int i; - snat_address_t *a; + snat_main_t *sm = &snat_main; + + return sm->alloc_addr_and_port(addresses, fib_index, thread_index, k, + address_indexp, port_per_thread, + snat_thread_index); +} + +static int +nat_alloc_addr_and_port_default (snat_address_t * addresses, + u32 fib_index, + u32 thread_index, + snat_session_key_t * k, + u32 * address_indexp, + u16 port_per_thread, + u32 snat_thread_index) +{ + int i, gi = 0; + snat_address_t *a, *ga = 0; u32 portnum; - for (i = 0; i < vec_len (sm->addresses); i++) + for (i = 0; i < vec_len (addresses); i++) { - a = sm->addresses + i; - if (sm->vrf_mode && a->fib_index != ~0 && a->fib_index != fib_index) - continue; + a = addresses + i; 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)) \ + if (a->busy_##n##_ports_per_thread[thread_index] < port_per_thread) \ { \ - while (1) \ + if (a->fib_index == fib_index) \ { \ - 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; \ + while (1) \ + { \ + portnum = (port_per_thread * \ + snat_thread_index) + \ + snat_random_port(1, 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_per_thread[thread_index]++; \ + a->busy_##n##_ports++; \ + k->addr = a->addr; \ + k->port = clib_host_to_net_u16(portnum); \ + *address_indexp = i; \ + return 0; \ + } \ + } \ + else if (a->fib_index == ~0) \ + { \ + ga = a; \ + gi = i; \ } \ } \ break; foreach_snat_protocol #undef _ default: - clib_warning("unknown protocol"); + nat_log_info ("unknown protocol"); return 1; } } + + if (ga) + { + a = ga; + switch (k->protocol) + { +#define _(N, j, n, s) \ + case SNAT_PROTOCOL_##N: \ + while (1) \ + { \ + portnum = (port_per_thread * \ + snat_thread_index) + \ + snat_random_port(1, 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_per_thread[thread_index]++; \ + a->busy_##n##_ports++; \ + k->addr = a->addr; \ + k->port = clib_host_to_net_u16(portnum); \ + *address_indexp = gi; \ + return 0; \ + } + break; + foreach_snat_protocol +#undef _ + default: + nat_log_info ("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) +static int +nat_alloc_addr_and_port_mape (snat_address_t * addresses, + u32 fib_index, + u32 thread_index, + snat_session_key_t * k, + u32 * address_indexp, + u16 port_per_thread, + u32 snat_thread_index) { - 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; + snat_main_t *sm = &snat_main; + snat_address_t *a = addresses; + u16 m, ports, portnum, A, j; + m = 16 - (sm->psid_offset + sm->psid_length); + ports = (1 << (16 - sm->psid_length)) - (1 << m); - 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 (!vec_len (addresses)) + goto exhausted; - if (sm->static_mapping_only) + switch (k->protocol) { - error = clib_error_return (0, "static mapping only mode"); - goto done; +#define _(N, i, n, s) \ + case SNAT_PROTOCOL_##N: \ + if (a->busy_##n##_ports < ports) \ + { \ + while (1) \ + { \ + A = snat_random_port(1, pow2_mask(sm->psid_offset)); \ + j = snat_random_port(0, pow2_mask(m)); \ + portnum = A | (sm->psid << sm->psid_offset) | (j << (16 - m)); \ + 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: + nat_log_info ("unknown protocol"); + return 1; } - 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; - } +exhausted: + /* Totally out of translations to use... */ + snat_ipfix_logging_addresses_exhausted(0); + return 1; +} - count = (end_host_order - start_host_order) + 1; +static int +nat_alloc_addr_and_port_range (snat_address_t * addresses, + u32 fib_index, + u32 thread_index, + snat_session_key_t * k, + u32 * address_indexp, + u16 port_per_thread, + u32 snat_thread_index) +{ + snat_main_t *sm = &snat_main; + snat_address_t *a = addresses; + u16 portnum, ports; - if (count > 1024) - clib_warning ("%U - %U, %d addresses...", - format_ip4_address, &start_addr, - format_ip4_address, &end_addr, - count); + ports = sm->end_port - sm->start_port + 1; - this_addr = start_addr; + if (!vec_len (addresses)) + goto exhausted; - for (i = 0; i < count; i++) + switch (k->protocol) { - 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); +#define _(N, i, n, s) \ + case SNAT_PROTOCOL_##N: \ + if (a->busy_##n##_ports < ports) \ + { \ + while (1) \ + { \ + portnum = snat_random_port(sm->start_port, sm->end_port); \ + 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: + nat_log_info ("unknown protocol"); + return 1; } -done: - unformat_free (line_input); - - return error; +exhausted: + /* Totally out of translations to use... */ + snat_ipfix_logging_addresses_exhausted(0); + return 1; } -VLIB_CLI_COMMAND (add_address_command, static) = { - .path = "nat44 add address", - .short_help = "nat44 add address [- ] " - "[tenant-vrf ] [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) +void +nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add) { - 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; - } - } + dpo_id_t dpo_v4 = DPO_INVALID; + fib_prefix_t pfx = { + .fp_proto = FIB_PROTOCOL_IP4, + .fp_len = 32, + .fp_addr.ip4.as_u32 = addr.as_u32, + }; - if (vec_len (inside_sw_if_indices)) + if (is_add) { - 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; - } - } - } + nat_dpo_create (DPO_PROTO_IP4, 0, &dpo_v4); + fib_table_entry_special_dpo_add (0, &pfx, FIB_SOURCE_PLUGIN_HI, + FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4); + dpo_reset (&dpo_v4); } - - if (vec_len (outside_sw_if_indices)) + else { - 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; - } - } - } + fib_table_entry_special_remove (0, &pfx, FIB_SOURCE_PLUGIN_HI); } - -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 nat44", - .function = snat_feature_command_fn, - .short_help = "set interface nat44 in out [output-feature] " - "[del]", -}; - uword unformat_snat_protocol (unformat_input_t * input, va_list * args) { @@ -1404,279 +2586,101 @@ format_snat_protocol (u8 * s, va_list * args) return s; } -static clib_error_t * -add_static_mapping_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) +u8 * +format_nat_addr_and_port_alloc_alg (u8 * s, va_list * args) { - 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; + u32 i = va_arg (*args, u32); + u8 *t = 0; - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + switch (i) { - 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; - } +#define _(v, N, s) case NAT_ADDR_AND_PORT_ALLOC_ALG_##N: t = (u8 *) s; break; + foreach_nat_addr_and_port_alloc_alg +#undef _ + default: + s = format (s, "unknown"); + return s; } + s = format (s, "%s", t); + return s; +} - if (!addr_only && !proto_set) - { - error = clib_error_return (0, "missing protocol"); - goto done; - } +u8 * format_snat_key (u8 * s, va_list * args); +u8 * format_static_mapping_key (u8 * s, va_list * args); - 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); +u8 * +format_session_kvp (u8 * s, va_list * args) +{ + clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *); + snat_session_key_t k; - 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; - } + k.as_u64 = v->key; -done: - unformat_free (line_input); + s = format (s, "%U session-index %llu", format_snat_key, &k, v->value); - return error; + return s; } -/*? - * @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# 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 static mapping between local and external address use: - * vpp# nat44 add static mapping local 10.0.0.3 external 4.4.4.4 - * @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 ] [del]", -}; - -static clib_error_t * -set_workers_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) +u8 * +format_static_mapping_kvp (u8 * s, va_list * args) { - 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; + clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *); + snat_session_key_t k; - 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; - } - } + k.as_u64 = v->key; - if (bitmap == 0) - { - error = clib_error_return (0, "List of workers must be specified."); - goto done; - } + s = format (s, "%U static-mapping-index %llu", + format_static_mapping_key, &k, v->value); - rv = snat_set_workers(bitmap); + return s; +} - clib_bitmap_free (bitmap); +u8 * +format_user_kvp (u8 * s, va_list * args) +{ + clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *); + snat_user_key_t k; - 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; - } + k.as_u64 = v->key; -done: - unformat_free (line_input); + s = format (s, "%U fib %d user-index %llu", format_ip4_address, &k.addr, + k.fib_index, v->value); - return error; + return s; } -/*? - * @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 ", -}; - -static clib_error_t * -snat_ipfix_logging_enable_disable_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) +u8 * +format_ed_session_kvp (u8 * s, va_list * args) { - 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); + clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *); + nat_ed_ses_key_t k; - if (rv) - { - error = clib_error_return (0, "ipfix logging enable failed"); - goto done; - } + k.as_u64[0] = v->key[0]; + k.as_u64[1] = v->key[1]; -done: - unformat_free (line_input); + s = format (s, "local %U:%d remote %U:%d proto %U fib %d session-index %llu", + format_ip4_address, &k.l_addr, clib_net_to_host_u16 (k.l_port), + format_ip4_address, &k.r_addr, clib_net_to_host_u16 (k.r_port), + format_ip_protocol, k.proto, k.fib_index, v->value); - return error; + return s; } -/*? - * @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 [domain ] [src-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; + u32 hash; - 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)]; - } + next_worker_index = sm->first_worker_index; + hash = ip0->src_address.as_u32 + (ip0->src_address.as_u32 >> 8) + + (ip0->src_address.as_u32 >> 16) + (ip0->src_address.as_u32 >>24); - /* add non-traslated packets worker lookup */ - kv0.value = next_worker_index; - clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv0, 1); - } + if (PREDICT_TRUE (is_pow2 (_vec_len (sm->workers)))) + next_worker_index += sm->workers[hash & (_vec_len (sm->workers) - 1)]; else - next_worker_index = value0.value; + next_worker_index += sm->workers[hash % _vec_len (sm->workers)]; return next_worker_index; } @@ -1685,54 +2689,196 @@ 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; + udp_header_t *udp; + u16 port; + snat_session_key_t m_key; + clib_bihash_kv_8_8_t kv, value; + snat_static_mapping_t *m; + u32 proto; 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)) + /* first try static mappings without port */ + if (PREDICT_FALSE (pool_elts (sm->static_mappings))) { - icmp46_header_t * icmp0 = (icmp46_header_t *) udp0; - icmp_echo_header_t *echo0 = (icmp_echo_header_t *)(icmp0+1); - key0.port = echo0->identifier; + m_key.addr = ip0->dst_address; + m_key.port = 0; + m_key.protocol = 0; + m_key.fib_index = rx_fib_index0; + kv.key = m_key.as_u64; + if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value)) + { + m = pool_elt_at_index (sm->static_mappings, value.value); + return m->workers[0]; + } } - kv0.key = key0.as_u64; + proto = ip_proto_to_snat_proto (ip0->protocol); + udp = ip4_next_header (ip0); + port = udp->dst_port; - /* Ever heard of of the "user" before? */ - if (clib_bihash_search_8_8 (&sm->worker_by_out, &kv0, &value0)) + if (PREDICT_FALSE (ip4_is_fragment (ip0))) { - key0.port = 0; - kv0.key = key0.as_u64; + if (PREDICT_FALSE (nat_reass_is_drop_frag (0))) + return vlib_get_thread_index (); - 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)]; - } - } + if (PREDICT_TRUE (!ip4_is_first_fragment (ip0))) + { + nat_reass_ip4_t *reass; + + reass = nat_ip4_reass_find (ip0->src_address, ip0->dst_address, + ip0->fragment_id, ip0->protocol); + + if (reass && (reass->thread_index != (u32) ~ 0)) + return reass->thread_index; + else + return vlib_get_thread_index (); + } + } + + /* unknown protocol */ + if (PREDICT_FALSE (proto == ~0)) + { + /* use current thread */ + return vlib_get_thread_index (); + } + + if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_ICMP)) + { + icmp46_header_t * icmp = (icmp46_header_t *) udp; + icmp_echo_header_t *echo = (icmp_echo_header_t *)(icmp + 1); + if (!icmp_is_error_message (icmp)) + port = echo->identifier; else { - /* Static mapping without port */ - next_worker_index = value0.value; + ip4_header_t *inner_ip = (ip4_header_t *)(echo + 1); + proto = ip_proto_to_snat_proto (inner_ip->protocol); + void *l4_header = ip4_next_header (inner_ip); + switch (proto) + { + case SNAT_PROTOCOL_ICMP: + icmp = (icmp46_header_t*)l4_header; + echo = (icmp_echo_header_t *)(icmp + 1); + port = echo->identifier; + break; + case SNAT_PROTOCOL_UDP: + case SNAT_PROTOCOL_TCP: + port = ((tcp_udp_header_t*)l4_header)->src_port; + break; + default: + return vlib_get_thread_index (); + } } + } - /* Add to translated packets worker lookup */ - kv0.value = next_worker_index; - clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv0, 1); + /* try static mappings with port */ + if (PREDICT_FALSE (pool_elts (sm->static_mappings))) + { + m_key.addr = ip0->dst_address; + m_key.port = clib_net_to_host_u16 (port); + m_key.protocol = proto; + m_key.fib_index = rx_fib_index0; + kv.key = m_key.as_u64; + if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value)) + { + m = pool_elt_at_index (sm->static_mappings, value.value); + return m->workers[0]; + } + } + + /* worker by outside port */ + next_worker_index = sm->first_worker_index; + next_worker_index += + sm->workers[(clib_net_to_host_u16 (port) - 1024) / sm->port_per_thread]; + return next_worker_index; +} + +static u32 +nat44_ed_get_worker_out2in_cb (ip4_header_t * ip, u32 rx_fib_index) +{ + snat_main_t *sm = &snat_main; + clib_bihash_kv_8_8_t kv, value; + u32 proto, next_worker_index = 0; + udp_header_t *udp; + u16 port; + snat_static_mapping_t *m; + u32 hash; + + /* first try static mappings without port */ + if (PREDICT_FALSE (pool_elts (sm->static_mappings))) + { + make_sm_kv (&kv, &ip->dst_address, 0, rx_fib_index, 0); + if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value)) + { + m = pool_elt_at_index (sm->static_mappings, value.value); + return m->workers[0]; + } + } + + proto = ip_proto_to_snat_proto (ip->protocol); + + /* unknown protocol */ + if (PREDICT_FALSE (proto == ~0)) + { + /* use current thread */ + return vlib_get_thread_index (); + } + + udp = ip4_next_header (ip); + port = udp->dst_port; + + if (PREDICT_FALSE (ip->protocol == IP_PROTOCOL_ICMP)) + { + icmp46_header_t * icmp = (icmp46_header_t *) udp; + icmp_echo_header_t *echo = (icmp_echo_header_t *)(icmp + 1); + if (!icmp_is_error_message (icmp)) + port = echo->identifier; + else + { + ip4_header_t *inner_ip = (ip4_header_t *)(echo + 1); + proto = ip_proto_to_snat_proto (inner_ip->protocol); + void *l4_header = ip4_next_header (inner_ip); + switch (proto) + { + case SNAT_PROTOCOL_ICMP: + icmp = (icmp46_header_t*)l4_header; + echo = (icmp_echo_header_t *)(icmp + 1); + port = echo->identifier; + break; + case SNAT_PROTOCOL_UDP: + case SNAT_PROTOCOL_TCP: + port = ((tcp_udp_header_t*)l4_header)->src_port; + break; + default: + return vlib_get_thread_index (); + } + } + } + + /* try static mappings with port */ + if (PREDICT_FALSE (pool_elts (sm->static_mappings))) + { + make_sm_kv (&kv, &ip->dst_address, proto, rx_fib_index, + clib_net_to_host_u16 (port)); + if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value)) + { + m = pool_elt_at_index (sm->static_mappings, value.value); + if (!vec_len(m->locals)) + return m->workers[0]; + + hash = ip->src_address.as_u32 + (ip->src_address.as_u32 >> 8) + + (ip->src_address.as_u32 >> 16) + (ip->src_address.as_u32 >>24); + + if (PREDICT_TRUE (is_pow2 (_vec_len (m->workers)))) + return m->workers[hash & (_vec_len (m->workers) - 1)]; + else + return m->workers[hash % _vec_len (m->workers)]; + } } - else - next_worker_index = value0.value; + + /* worker by outside port */ + next_worker_index = sm->first_worker_index; + next_worker_index += + sm->workers[(clib_net_to_host_u16 (port) - 1024) / sm->port_per_thread]; return next_worker_index; } @@ -1741,19 +2887,29 @@ static clib_error_t * snat_config (vlib_main_t * vm, unformat_input_t * input) { snat_main_t * sm = &snat_main; + nat66_main_t * nm = &nat66_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 outside_ip6_vrf_id = 0; u32 inside_vrf_id = 0; u32 static_mapping_buckets = 1024; u32 static_mapping_memory_size = 64<<20; + u32 nat64_bib_buckets = 1024; + u32 nat64_bib_memory_size = 128 << 20; + u32 nat64_st_buckets = 2048; + u32 nat64_st_memory_size = 256 << 20; u8 static_mapping_only = 0; u8 static_mapping_connection_tracking = 0; + snat_main_per_thread_data_t *tsm; + dslite_main_t * dm = &dslite_main; sm->deterministic = 0; + sm->out2in_dpo = 0; + sm->endpoint_dependent = 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { @@ -1772,6 +2928,9 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) else if (unformat (input, "outside VRF id %d", &outside_vrf_id)) ; + else if (unformat (input, "outside ip6 VRF id %d", + &outside_ip6_vrf_id)) + ; else if (unformat (input, "inside VRF id %d", &inside_vrf_id)) ; @@ -1783,26 +2942,66 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) } else if (unformat (input, "deterministic")) sm->deterministic = 1; + else if (unformat (input, "nat64 bib hash buckets %d", + &nat64_bib_buckets)) + ; + else if (unformat (input, "nat64 bib hash memory %d", + &nat64_bib_memory_size)) + ; + else if (unformat (input, "nat64 st hash buckets %d", &nat64_st_buckets)) + ; + else if (unformat (input, "nat64 st hash memory %d", + &nat64_st_memory_size)) + ; + else if (unformat (input, "out2in dpo")) + sm->out2in_dpo = 1; + else if (unformat (input, "dslite ce")) + dslite_set_ce(dm, 1); + else if (unformat (input, "endpoint-dependent")) + sm->endpoint_dependent = 1; else return clib_error_return (0, "unknown input '%U'", format_unformat_error, input); } + if (sm->deterministic && sm->endpoint_dependent) + return clib_error_return ( + 0, "deterministic and endpoint-dependent modes are mutually exclusive"); + + if (static_mapping_only && (sm->deterministic || sm->endpoint_dependent)) + return clib_error_return ( + 0, "static mapping only mode available only for simple nat"); + + if (sm->out2in_dpo && (sm->deterministic || sm->endpoint_dependent)) + return clib_error_return ( + 0, "out2in dpo mode available only for simple nat"); + /* for show commands, etc. */ sm->translation_buckets = translation_buckets; sm->translation_memory_size = translation_memory_size; + /* do not exceed load factor 10 */ + sm->max_translations = 10 * translation_buckets; 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); + outside_vrf_id, + FIB_SOURCE_PLUGIN_HI); + nm->outside_vrf_id = outside_ip6_vrf_id; + nm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, + outside_ip6_vrf_id, + FIB_SOURCE_PLUGIN_HI); sm->inside_vrf_id = inside_vrf_id; sm->inside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, - inside_vrf_id); + inside_vrf_id, + FIB_SOURCE_PLUGIN_HI); sm->static_mapping_only = static_mapping_only; sm->static_mapping_connection_tracking = static_mapping_connection_tracking; + nat64_set_hash(nat64_bib_buckets, nat64_bib_memory_size, nat64_st_buckets, + nat64_st_memory_size); + if (sm->deterministic) { sm->in2out_node_index = snat_det_in2out_node.index; @@ -1813,37 +3012,67 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) } 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)) + if (sm->endpoint_dependent) + { + sm->worker_in2out_cb = snat_get_worker_in2out_cb; + sm->worker_out2in_cb = nat44_ed_get_worker_out2in_cb; + sm->in2out_node_index = nat44_ed_in2out_node.index; + sm->in2out_output_node_index = nat44_ed_in2out_output_node.index; + sm->out2in_node_index = nat44_ed_out2in_node.index; + sm->icmp_match_in2out_cb = icmp_match_in2out_ed; + sm->icmp_match_out2in_cb = icmp_match_out2in_ed; + nat_affinity_init (vm); + } + 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; sm->icmp_match_in2out_cb = icmp_match_in2out_slow; sm->icmp_match_out2in_cb = icmp_match_out2in_slow; + } + if (!static_mapping_only || + (static_mapping_only && static_mapping_connection_tracking)) + { + vec_foreach (tsm, sm->per_thread_data) + { + if (sm->endpoint_dependent) + { + clib_bihash_init_16_8 (&tsm->in2out_ed, "in2out-ed", + translation_buckets, + translation_memory_size); + clib_bihash_set_kvp_format_fn_16_8 (&tsm->in2out_ed, + format_ed_session_kvp); + + clib_bihash_init_16_8 (&tsm->out2in_ed, "out2in-ed", + translation_buckets, + translation_memory_size); + clib_bihash_set_kvp_format_fn_16_8 (&tsm->out2in_ed, + format_ed_session_kvp); + } + else + { + clib_bihash_init_8_8 (&tsm->in2out, "in2out", + translation_buckets, + translation_memory_size); + clib_bihash_set_kvp_format_fn_8_8 (&tsm->in2out, + format_session_kvp); + + clib_bihash_init_8_8 (&tsm->out2in, "out2in", + translation_buckets, + translation_memory_size); + clib_bihash_set_kvp_format_fn_8_8 (&tsm->out2in, + format_session_kvp); + } - 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_8_8 (&tsm->user_hash, "users", user_buckets, + user_memory_size); + clib_bihash_set_kvp_format_fn_8_8 (&tsm->user_hash, + format_user_kvp); + } - clib_bihash_init_16_8 (&sm->out2in_unk_proto, "out2in-unk-proto", - translation_buckets, translation_memory_size); } else { @@ -1853,10 +3082,14 @@ snat_config (vlib_main_t * vm, unformat_input_t * input) clib_bihash_init_8_8 (&sm->static_mapping_by_local, "static_mapping_by_local", static_mapping_buckets, static_mapping_memory_size); + clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_local, + format_static_mapping_kvp); clib_bihash_init_8_8 (&sm->static_mapping_by_external, "static_mapping_by_external", static_mapping_buckets, static_mapping_memory_size); + clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_external, + format_static_mapping_kvp); } return 0; @@ -1884,34 +3117,39 @@ u8 * format_snat_session_state (u8 * s, va_list * args) 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, + s = format (s, "%U proto %U port %d fib %d", + format_ip4_address, &key->addr, + format_snat_protocol, key->protocol, clib_net_to_host_u16 (key->port), key->fib_index); return s; } +u8 * format_static_mapping_key (u8 * s, va_list * args) +{ + snat_session_key_t * key = va_arg (*args, snat_session_key_t *); + + s = format (s, "%U proto %U port %d fib %d", + format_ip4_address, &key->addr, + format_snat_protocol, key->protocol, + 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_main_per_thread_data_t * sm = va_arg (*args, snat_main_per_thread_data_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, + format_ip4_address, &sess->in2out.addr, + clib_net_to_host_u16 (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, + format_ip4_address, &sess->out2in.addr, + clib_net_to_host_u16 (sess->out2in.port), sess->out2in.fib_index); } else @@ -1919,6 +3157,25 @@ u8 * format_snat_session (u8 * s, va_list * args) s = format (s, " i2o %U\n", format_snat_key, &sess->in2out); s = format (s, " o2i %U\n", format_snat_key, &sess->out2in); } + if (is_ed_session (sess) || is_fwd_bypass_session (sess)) + { + if (is_twice_nat_session (sess)) + { + s = format (s, " external host o2i %U:%d i2o %U:%d\n", + format_ip4_address, &sess->ext_host_addr, + clib_net_to_host_u16 (sess->ext_host_port), + format_ip4_address, &sess->ext_host_nat_addr, + clib_net_to_host_u16 (sess->ext_host_nat_port)); + } + else + { + if (sess->ext_host_addr.as_u32) + s = format (s, " external host %U:%u\n", + format_ip4_address, &sess->ext_host_addr, + clib_net_to_host_u16 (sess->ext_host_port)); + } + } + s = format (s, " index %llu\n", sess - sm->sessions); 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); @@ -1926,6 +3183,12 @@ u8 * format_snat_session (u8 * s, va_list * args) s = format (s, " static translation\n"); else s = format (s, " dynamic translation\n"); + if (is_fwd_bypass_session (sess)) + s = format (s, " forwarding-bypass\n"); + if (is_lb_session (sess)) + s = format (s, " load-balancing\n"); + if (is_twice_nat_session (sess)) + s = format (s, " twice-nat\n"); return s; } @@ -1973,19 +3236,41 @@ u8 * format_snat_user (u8 * s, va_list * args) u8 * format_snat_static_mapping (u8 * s, va_list * args) { snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *); + nat44_lb_addr_port_t *local; if (m->addr_only) - s = format (s, "local %U external %U vrf %d", + s = format (s, "local %U external %U vrf %d %s %s", format_ip4_address, &m->local_addr, format_ip4_address, &m->external_addr, - m->vrf_id); + m->vrf_id, + m->twice_nat == TWICE_NAT ? "twice-nat" : + m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "", + m->out2in_only ? "out2in-only" : ""); 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); - + { + if (vec_len (m->locals)) + { + s = format (s, "%U external %U:%d %s %s", + format_snat_protocol, m->proto, + format_ip4_address, &m->external_addr, m->external_port, + m->twice_nat == TWICE_NAT ? "twice-nat" : + m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "", + m->out2in_only ? "out2in-only" : ""); + vec_foreach (local, m->locals) + s = format (s, "\n local %U:%d vrf %d probability %d\%", + format_ip4_address, &local->addr, local->port, + local->vrf_id, local->probability); + } + else + s = format (s, "%U local %U:%d external %U:%d vrf %d %s %s", + 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, + m->twice_nat == TWICE_NAT ? "twice-nat" : + m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "", + m->out2in_only ? "out2in-only" : ""); + } return s; } @@ -1997,16 +3282,14 @@ u8 * format_snat_static_map_to_resolve (u8 * s, va_list * args) 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), + format_vnet_sw_if_index_name, 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); + format_vnet_sw_if_index_name, vnm, m->sw_if_index, + m->e_port, m->vrf_id); return s; } @@ -2040,224 +3323,76 @@ u8 * format_det_map_ses (u8 * s, va_list * args) return s; } -static clib_error_t * -show_snat_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) +static void +nat_ip4_add_del_addr_only_sm_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) { - 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_main_t *sm = &snat_main; 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; + snat_static_mapping_t *m; + snat_session_key_t m_key; + clib_bihash_kv_8_8_t kv, value; + int i, rv; + ip4_address_t l_addr; - if (sm->static_mapping_only) - { - if (sm->static_mapping_connection_tracking) - vlib_cli_output (vm, "NAT plugin mode: static mapping only connection " - "tracking"); - else - vlib_cli_output (vm, "NAT plugin mode: static mapping only"); - } - else if (sm->deterministic) - { - vlib_cli_output (vm, "NAT plugin mode: deterministic mapping"); - } - else + for (i = 0; i < vec_len (sm->to_resolve); i++) { - vlib_cli_output (vm, "NAT plugin mode: dynamic translations enabled"); + rp = sm->to_resolve + i; + if (rp->addr_only == 0) + continue; + if (rp->sw_if_index == sw_if_index) + goto match; } - 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, "NAT44 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 _ - } - } + return; - 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); - } - } - } +match: + m_key.addr.as_u32 = address->as_u32; + m_key.port = rp->addr_only ? 0 : rp->e_port; + m_key.protocol = rp->addr_only ? 0 : rp->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 (sm->deterministic) + if (!is_delete) { - 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); - } - } - })); - } + /* Don't trip over lease renewal, static config */ + if (m) + return; } 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); - } - } - } - } + if (!m) + return; } - return 0; -} - -VLIB_CLI_COMMAND (show_snat_command, static) = { - .path = "show nat44", - .short_help = "show nat44", - .function = show_snat_command_fn, -}; + /* Indetity mapping? */ + if (rp->l_addr.as_u32 == 0) + l_addr.as_u32 = address[0].as_u32; + else + l_addr.as_u32 = rp->l_addr.as_u32; + /* Add the static mapping */ + rv = snat_add_static_mapping (l_addr, + address[0], + rp->l_port, + rp->e_port, + rp->vrf_id, + rp->addr_only, + ~0 /* sw_if_index */, + rp->proto, + !is_delete, + 0, 0, rp->tag); + if (rv) + nat_log_notice ("snat_add_static_mapping returned %d", rv); +} static void snat_ip4_add_del_interface_address_cb (ip4_main_t * im, @@ -2270,85 +3405,99 @@ snat_ip4_add_del_interface_address_cb (ip4_main_t * im, { snat_main_t *sm = &snat_main; snat_static_map_resolve_t *rp; - u32 *indices_to_delete = 0; + ip4_address_t l_addr; int i, j; int rv; + u8 twice_nat = 0; + snat_address_t *addresses = sm->addresses; for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++) { if (sw_if_index == sm->auto_add_sw_if_indices[i]) + goto match; + } + + for (i = 0; i < vec_len(sm->auto_add_sw_if_indices_twice_nat); i++) + { + twice_nat = 1; + addresses = sm->twice_nat_addresses; + if (sw_if_index == sm->auto_add_sw_if_indices_twice_nat[i]) + goto match; + } + + return; + +match: + if (!is_delete) + { + /* Don't trip over lease renewal, static config */ + for (j = 0; j < vec_len(addresses); j++) + if (addresses[j].addr.as_u32 == address->as_u32) + return; + + (void) snat_add_address (sm, address, ~0, twice_nat); + /* Scan static map resolution vector */ + for (j = 0; j < vec_len (sm->to_resolve); j++) { - if (!is_delete) + rp = sm->to_resolve + j; + if (rp->addr_only) + continue; + /* On this interface? */ + if (rp->sw_if_index == sw_if_index) { - /* 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; + /* Indetity mapping? */ + if (rp->l_addr.as_u32 == 0) + l_addr.as_u32 = address[0].as_u32; + else + l_addr.as_u32 = rp->l_addr.as_u32; + /* Add the static mapping */ + rv = snat_add_static_mapping (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, + 0, 0, rp->tag); + if (rv) + nat_log_notice ("snat_add_static_mapping returned %d", rv); } } + return; + } + else + { + (void) snat_del_address(sm, address[0], 1, twice_nat); + return; } } -int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del) +int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del, + u8 twice_nat) { 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; + u32 *auto_add_sw_if_indices = + twice_nat ? sm->auto_add_sw_if_indices_twice_nat : sm->auto_add_sw_if_indices; 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++) + for (i = 0; i < vec_len(auto_add_sw_if_indices); i++) { - if (sm->auto_add_sw_if_indices[i] == sw_if_index) + if (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); + (void) snat_del_address (sm, first_int_addr[0], 1, twice_nat); else { for (j = 0; j < vec_len (sm->to_resolve); j++) @@ -2364,7 +3513,10 @@ int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del) vec_free(indices_to_delete); } } - vec_del1(sm->auto_add_sw_if_indices, i); + if (twice_nat) + vec_del1(sm->auto_add_sw_if_indices_twice_nat, i); + else + vec_del1(sm->auto_add_sw_if_indices, i); } else return VNET_API_ERROR_VALUE_EXIST; @@ -2377,466 +3529,134 @@ int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int 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 (twice_nat) + vec_add1(sm->auto_add_sw_if_indices_twice_nat, sw_if_index); + else + 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); + (void) snat_add_address (sm, first_int_addr, ~0, twice_nat); 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 = "nat44 add interface address", - .short_help = "nat44 add interface address [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) +int +nat44_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port, + snat_protocol_t proto, u32 vrf_id, int is_in) { - 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# nat44 deterministic add in 10.0.0.0/18 out 1.1.1.0/30 - * @cliexend -?*/ -VLIB_CLI_COMMAND (snat_det_map_command, static) = { - .path = "nat44 deterministic add", - .short_help = "nat44 deterministic add in / out / [del]", - .function = snat_det_map_command_fn, -}; + snat_main_per_thread_data_t *tsm; + clib_bihash_kv_8_8_t kv, value; + ip4_header_t ip; + u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id); + snat_session_key_t key; + snat_session_t *s; + clib_bihash_8_8_t *t; -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; + if (sm->endpoint_dependent) + return VNET_API_ERROR_UNSUPPORTED; - /* Get a line of input. */ - if (!unformat_user (input, unformat_line_input, line_input)) - return 0; + ip.dst_address.as_u32 = ip.src_address.as_u32 = addr->as_u32; + if (sm->num_workers > 1) + tsm = + vec_elt_at_index (sm->per_thread_data, + sm->worker_in2out_cb (&ip, fib_index)); + else + tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + key.addr.as_u32 = addr->as_u32; + key.port = clib_host_to_net_u16 (port); + key.protocol = proto; + key.fib_index = fib_index; + kv.key = key.as_u64; + t = is_in ? &tsm->in2out : &tsm->out2in; + if (!clib_bihash_search_8_8 (t, &kv, &value)) { - 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); + if (pool_is_free_index (tsm->sessions, value.value)) + return VNET_API_ERROR_UNSPECIFIED; - 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); + s = pool_elt_at_index (tsm->sessions, value.value); + nat_free_session_data (sm, s, tsm - sm->per_thread_data); + nat44_delete_session (sm, s, tsm - sm->per_thread_data); + return 0; } -done: - unformat_free (line_input); - - return error; + return VNET_API_ERROR_NO_SUCH_ENTRY; } -/*? - * @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# nat44 deterministic forward 10.0.0.2 - * 1.1.1.0:<1054-1068> - * @cliexend -?*/ -VLIB_CLI_COMMAND (snat_det_forward_command, static) = { - .path = "nat44 deterministic forward", - .short_help = "nat44 deterministic forward ", - .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) +int +nat44_del_ed_session (snat_main_t *sm, ip4_address_t *addr, u16 port, + ip4_address_t *eh_addr, u16 eh_port, u8 proto, + u32 vrf_id, int is_in) { - 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); + ip4_header_t ip; + clib_bihash_16_8_t *t; + nat_ed_ses_key_t key; + clib_bihash_kv_16_8_t kv, value; + u32 fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id); + snat_session_t *s; + snat_main_per_thread_data_t *tsm; - if (out_port < 1024 || out_port > 65535) - { - error = clib_error_return (0, "wrong port, must be <1024-65535>"); - goto done; - } + if (!sm->endpoint_dependent) + return VNET_API_ERROR_FEATURE_DISABLED; - dm = snat_det_map_by_out(sm, &out_addr); - if (!dm) - vlib_cli_output (vm, "no match"); + ip.dst_address.as_u32 = ip.src_address.as_u32 = addr->as_u32; + if (sm->num_workers > 1) + tsm = + vec_elt_at_index (sm->per_thread_data, + sm->worker_in2out_cb (&ip, fib_index)); 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); + tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers); + + t = is_in ? &tsm->in2out_ed : &tsm->out2in_ed; + key.l_addr.as_u32 = addr->as_u32; + key.r_addr.as_u32 = eh_addr->as_u32; + key.l_port = clib_host_to_net_u16 (port); + key.r_port = clib_host_to_net_u16 (eh_port); + key.proto = proto; + key.fib_index = clib_host_to_net_u32 (fib_index); + kv.key[0] = key.as_u64[0]; + kv.key[1] = key.as_u64[1]; + if (clib_bihash_search_16_8 (t, &kv, &value)) + return VNET_API_ERROR_NO_SUCH_ENTRY; - return error; + if (pool_is_free_index (tsm->sessions, value.value)) + return VNET_API_ERROR_UNSPECIFIED; + s = pool_elt_at_index (tsm->sessions, value.value); + nat_free_session_data (sm, s, tsm - sm->per_thread_data); + nat44_delete_session (sm, s, tsm - sm->per_thread_data); + return 0; } -/*? - * @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 nat44 deterministic reverse 1.1.1.1:1276 - * 10.0.16.16 - * @cliexend -?*/ -VLIB_CLI_COMMAND (snat_det_reverse_command, static) = { - .path = "nat44 deterministic reverse", - .short_help = "nat44 deterministic reverse :", - .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) +void +nat_set_alloc_addr_and_port_mape (u16 psid, u16 psid_offset, u16 psid_length) { 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; + sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_MAPE; + sm->alloc_addr_and_port = nat_alloc_addr_and_port_mape; + sm->psid = psid; + sm->psid_offset = psid_offset; + sm->psid_length = psid_length; } -/*? - * @cliexpar - * @cliexstart{set snat deterministic timeout} - * Set values of timeouts for deterministic NAT (in seconds), use: - * vpp# set nat44 deterministic timeout udp 120 tcp-established 7500 - * tcp-transitory 250 icmp 90 - * To reset default values use: - * vpp# set nat44 deterministic timeout reset - * @cliexend -?*/ -VLIB_CLI_COMMAND (set_timeout_command, static) = { - .path = "set nat44 deterministic timeout", - .function = set_timeout_command_fn, - .short_help = - "set nat44 deterministic timeout [udp | tcp-established " - "tcp-transitory | icmp | reset]", -}; - -static clib_error_t * -snat_det_close_session_out_fn (vlib_main_t *vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) +void +nat_set_alloc_addr_and_port_range (u16 start_port, u16 end_port) { 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; + sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_RANGE; + sm->alloc_addr_and_port = nat_alloc_addr_and_port_range; + sm->start_port = start_port; + sm->end_port = end_port; } -/*? - * @cliexpar - * @cliexstart{snat deterministic close session out} - * Close session using outside ip address and port - * and external ip address and port, use: - * vpp# nat44 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 = "nat44 deterministic close session out", - .short_help = "nat44 deterministic close session out " - ": :", - .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) +void +nat_set_alloc_addr_and_port_default (void) { 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; + sm->addr_and_port_alloc_alg = NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT; + sm->alloc_addr_and_port = nat_alloc_addr_and_port_default; } -/*? - * @cliexpar - * @cliexstart{snat deterministic close_session_in} - * Close session using inside ip address and port - * and external ip address and port, use: - * vpp# nat44 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 = "nat44 deterministic close session in", - .short_help = "nat44 deterministic close session in " - ": :", - .function = snat_det_close_session_in_fn, -};