/* * Copyright (c) 2018 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * @file * @brief NAT formatting */ #include <nat/nat.h> #include <nat/nat_det.h> uword unformat_snat_protocol (unformat_input_t * input, va_list * args) { u32 *r = va_arg (*args, u32 *); if (0); #define _(N, i, n, s) else if (unformat (input, s)) *r = SNAT_PROTOCOL_##N; foreach_snat_protocol #undef _ else return 0; return 1; } u8 * format_snat_protocol (u8 * s, va_list * args) { u32 i = va_arg (*args, u32); u8 *t = 0; switch (i) { #define _(N, j, n, str) case SNAT_PROTOCOL_##N: t = (u8 *) str; break; foreach_snat_protocol #undef _ default: s = format (s, "unknown"); return s; } s = format (s, "%s", t); return s; } u8 * format_nat_addr_and_port_alloc_alg (u8 * s, va_list * args) { u32 i = va_arg (*args, u32); u8 *t = 0; switch (i) { #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; } u8 * format_snat_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, 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_state (u8 * s, va_list * args) { u32 i = va_arg (*args, u32); u8 *t = 0; switch (i) { #define _(v, N, str) case SNAT_SESSION_##N: t = (u8 *) str; break; foreach_snat_session_state #undef _ default: t = format (t, "unknown"); } s = format (s, "%s", t); return s; } u8 * format_snat_session (u8 * s, va_list * args) { 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, sess->in2out.fib_index); s = format (s, " o2i %U proto %u fib %u\n", format_ip4_address, &sess->out2in.addr, sess->out2in.port, sess->out2in.fib_index); } else { s = format (s, " i2o %U\n", format_snat_key, &sess->in2out); s = format (s, " o2i %U\n", format_snat_key, &sess->out2in); } 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); if (snat_is_session_static (sess)) 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; } u8 * format_snat_user (u8 * s, va_list * args) { snat_main_per_thread_data_t *sm = va_arg (*args, snat_main_per_thread_data_t *); snat_user_t *u = va_arg (*args, snat_user_t *); int verbose = va_arg (*args, int); dlist_elt_t *head, *elt; u32 elt_index, head_index; u32 session_index; snat_session_t *sess; s = format (s, "%U: %d dynamic translations, %d static translations\n", format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions); if (verbose == 0) return s; if (u->nsessions || u->nstaticsessions) { head_index = u->sessions_per_user_list_head_index; head = pool_elt_at_index (sm->list_pool, head_index); elt_index = head->next; elt = pool_elt_at_index (sm->list_pool, elt_index); session_index = elt->value; while (session_index != ~0) { sess = pool_elt_at_index (sm->sessions, session_index); s = format (s, " %U\n", format_snat_session, sm, sess); elt_index = elt->next; elt = pool_elt_at_index (sm->list_pool, elt_index); session_index = elt->value; } } return s; } u8 * format_snat_static_mapping (u8 * s, va_list * args) { snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *); nat44_lb_addr_port_t *local; if (is_identity_static_mapping (m)) { if (is_addr_only_static_mapping (m)) s = format (s, "identity mapping %U", format_ip4_address, &m->local_addr); else s = format (s, "identity mapping %U %U:%d", format_snat_protocol, m->proto, format_ip4_address, &m->local_addr, m->local_port); /* *INDENT-OFF* */ pool_foreach (local, m->locals, ({ s = format (s, " vrf %d", local->vrf_id); })); /* *INDENT-ON* */ return s; } if (is_addr_only_static_mapping (m)) 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->twice_nat == TWICE_NAT ? "twice-nat" : m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "", is_out2in_only_static_mapping (m) ? "out2in-only" : ""); else { if (is_lb_static_mapping (m)) { 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" : "", is_out2in_only_static_mapping (m) ? "out2in-only" : ""); /* *INDENT-OFF* */ pool_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); })); /* *INDENT-ON* */ } 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" : "", is_out2in_only_static_mapping (m) ? "out2in-only" : ""); } return s; } u8 * format_snat_static_map_to_resolve (u8 * s, va_list * args) { snat_static_map_resolve_t *m = va_arg (*args, snat_static_map_resolve_t *); vnet_main_t *vnm = vnet_get_main (); if (m->addr_only) s = format (s, "local %U external %U vrf %d", format_ip4_address, &m->l_addr, format_vnet_sw_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_if_index_name, vnm, m->sw_if_index, m->e_port, m->vrf_id); return s; } u8 * format_det_map_ses (u8 * s, va_list * args) { snat_det_map_t *det_map = va_arg (*args, snat_det_map_t *); ip4_address_t in_addr, out_addr; u32 in_offset, out_offset; snat_det_session_t *ses = va_arg (*args, snat_det_session_t *); u32 *i = va_arg (*args, u32 *); u32 user_index = *i / SNAT_DET_SES_PER_USER; in_addr.as_u32 = clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->in_addr.as_u32) + user_index); in_offset = clib_net_to_host_u32 (in_addr.as_u32) - clib_net_to_host_u32 (det_map->in_addr.as_u32); out_offset = in_offset / det_map->sharing_ratio; out_addr.as_u32 = clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->out_addr.as_u32) + out_offset); s = format (s, "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n", format_ip4_address, &in_addr, clib_net_to_host_u16 (ses->in_port), format_ip4_address, &out_addr, clib_net_to_host_u16 (ses->out.out_port), format_ip4_address, &ses->out.ext_host_addr, clib_net_to_host_u16 (ses->out.ext_host_port), format_snat_session_state, ses->state, ses->expire); return s; } u8 * format_nat44_reass_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_reass_trace_t *t = va_arg (*args, nat44_reass_trace_t *); s = format (s, "NAT44_REASS: sw_if_index %d, next index %d, status %s", t->sw_if_index, t->next_index, t->cached ? "cached" : "translated"); return s; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */