2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 * @brief NAT formatting
21 #include <nat/nat_inlines.h>
22 #include <nat/nat_det.h>
25 unformat_nat_protocol (unformat_input_t * input, va_list * args)
27 u32 *r = va_arg (*args, u32 *);
30 #define _(N, i, n, s) else if (unformat (input, s)) *r = NAT_PROTOCOL_##N;
39 format_nat_protocol (u8 * s, va_list * args)
41 u32 i = va_arg (*args, u32);
46 #define _(N, j, n, str) case NAT_PROTOCOL_##N: t = (u8 *) str; break;
50 s = format (s, "unknown");
53 s = format (s, "%s", t);
58 format_nat_addr_and_port_alloc_alg (u8 * s, va_list * args)
60 u32 i = va_arg (*args, u32);
65 #define _(v, N, s) case NAT_ADDR_AND_PORT_ALLOC_ALG_##N: t = (u8 *) s; break;
66 foreach_nat_addr_and_port_alloc_alg
69 s = format (s, "unknown");
72 s = format (s, "%s", t);
77 format_snat_key (u8 * s, va_list * args)
79 u64 key = va_arg (*args, u64);
83 nat_protocol_t protocol;
86 split_nat_key (key, &addr, &port, &fib_index, &protocol);
88 s = format (s, "%U proto %U port %d fib %d",
89 format_ip4_address, &addr,
90 format_nat_protocol, protocol,
91 clib_net_to_host_u16 (port), fib_index);
96 format_snat_session_state (u8 * s, va_list * args)
98 u32 i = va_arg (*args, u32);
103 #define _(v, N, str) case SNAT_SESSION_##N: t = (u8 *) str; break;
104 foreach_snat_session_state
107 t = format (t, "unknown");
109 s = format (s, "%s", t);
114 format_snat_session (u8 * s, va_list * args)
116 snat_main_per_thread_data_t *tsm =
117 va_arg (*args, snat_main_per_thread_data_t *);
118 snat_session_t *sess = va_arg (*args, snat_session_t *);
120 if (snat_is_unk_proto_session (sess))
122 s = format (s, " i2o %U proto %u fib %u\n",
123 format_ip4_address, &sess->in2out.addr,
124 sess->in2out.port, sess->in2out.fib_index);
125 s = format (s, " o2i %U proto %u fib %u\n",
126 format_ip4_address, &sess->out2in.addr,
127 sess->out2in.port, sess->out2in.fib_index);
131 s = format (s, " i2o %U\n", format_snat_key, &sess->in2out);
132 s = format (s, " o2i %U\n", format_snat_key, &sess->out2in);
134 if (is_ed_session (sess) || is_fwd_bypass_session (sess))
136 if (is_twice_nat_session (sess))
138 s = format (s, " external host o2i %U:%d i2o %U:%d\n",
139 format_ip4_address, &sess->ext_host_addr,
140 clib_net_to_host_u16 (sess->ext_host_port),
141 format_ip4_address, &sess->ext_host_nat_addr,
142 clib_net_to_host_u16 (sess->ext_host_nat_port));
146 if (sess->ext_host_addr.as_u32)
147 s = format (s, " external host %U:%u\n",
148 format_ip4_address, &sess->ext_host_addr,
149 clib_net_to_host_u16 (sess->ext_host_port));
152 s = format (s, " index %llu\n", sess - tsm->sessions);
153 s = format (s, " last heard %.2f\n", sess->last_heard);
154 s = format (s, " total pkts %d, total bytes %lld\n",
155 sess->total_pkts, sess->total_bytes);
156 if (snat_is_session_static (sess))
157 s = format (s, " static translation\n");
159 s = format (s, " dynamic translation\n");
160 if (is_fwd_bypass_session (sess))
161 s = format (s, " forwarding-bypass\n");
162 if (is_lb_session (sess))
163 s = format (s, " load-balancing\n");
164 if (is_twice_nat_session (sess))
165 s = format (s, " twice-nat\n");
171 format_snat_user (u8 * s, va_list * args)
173 snat_main_per_thread_data_t *tsm =
174 va_arg (*args, snat_main_per_thread_data_t *);
175 snat_user_t *u = va_arg (*args, snat_user_t *);
176 int verbose = va_arg (*args, int);
177 dlist_elt_t *head, *elt;
178 u32 elt_index, head_index;
180 snat_session_t *sess;
182 s = format (s, "%U: %d dynamic translations, %d static translations\n",
183 format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions);
188 if (u->nsessions || u->nstaticsessions)
190 head_index = u->sessions_per_user_list_head_index;
191 head = pool_elt_at_index (tsm->list_pool, head_index);
193 elt_index = head->next;
194 elt = pool_elt_at_index (tsm->list_pool, elt_index);
195 session_index = elt->value;
197 while (session_index != ~0)
199 sess = pool_elt_at_index (tsm->sessions, session_index);
201 s = format (s, " %U\n", format_snat_session, tsm, sess);
203 elt_index = elt->next;
204 elt = pool_elt_at_index (tsm->list_pool, elt_index);
205 session_index = elt->value;
213 format_snat_static_mapping (u8 * s, va_list * args)
215 snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *);
216 nat44_lb_addr_port_t *local;
218 if (is_identity_static_mapping (m))
220 if (is_addr_only_static_mapping (m))
221 s = format (s, "identity mapping %U",
222 format_ip4_address, &m->local_addr);
224 s = format (s, "identity mapping %U %U:%d",
225 format_nat_protocol, m->proto,
226 format_ip4_address, &m->local_addr, m->local_port);
229 pool_foreach (local, m->locals,
231 s = format (s, " vrf %d", local->vrf_id);
238 if (is_addr_only_static_mapping (m))
239 s = format (s, "local %U external %U vrf %d %s %s",
240 format_ip4_address, &m->local_addr,
241 format_ip4_address, &m->external_addr,
243 m->twice_nat == TWICE_NAT ? "twice-nat" :
244 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
245 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
248 if (is_lb_static_mapping (m))
250 s = format (s, "%U external %U:%d %s %s",
251 format_nat_protocol, m->proto,
252 format_ip4_address, &m->external_addr, m->external_port,
253 m->twice_nat == TWICE_NAT ? "twice-nat" :
254 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
255 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
258 pool_foreach (local, m->locals,
260 s = format (s, "\n local %U:%d vrf %d probability %d\%",
261 format_ip4_address, &local->addr, local->port,
262 local->vrf_id, local->probability);
268 s = format (s, "%U local %U:%d external %U:%d vrf %d %s %s",
269 format_nat_protocol, m->proto,
270 format_ip4_address, &m->local_addr, m->local_port,
271 format_ip4_address, &m->external_addr, m->external_port,
273 m->twice_nat == TWICE_NAT ? "twice-nat" :
274 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
275 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
281 format_snat_static_map_to_resolve (u8 * s, va_list * args)
283 snat_static_map_resolve_t *m = va_arg (*args, snat_static_map_resolve_t *);
284 vnet_main_t *vnm = vnet_get_main ();
287 s = format (s, "local %U external %U vrf %d",
288 format_ip4_address, &m->l_addr,
289 format_vnet_sw_if_index_name, vnm, m->sw_if_index, m->vrf_id);
291 s = format (s, "%U local %U:%d external %U:%d vrf %d",
292 format_nat_protocol, m->proto,
293 format_ip4_address, &m->l_addr, m->l_port,
294 format_vnet_sw_if_index_name, vnm, m->sw_if_index,
295 m->e_port, m->vrf_id);
301 format_det_map_ses (u8 * s, va_list * args)
303 snat_det_map_t *det_map = va_arg (*args, snat_det_map_t *);
304 ip4_address_t in_addr, out_addr;
305 u32 in_offset, out_offset;
306 snat_det_session_t *ses = va_arg (*args, snat_det_session_t *);
307 u32 *i = va_arg (*args, u32 *);
309 u32 user_index = *i / SNAT_DET_SES_PER_USER;
311 clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->in_addr.as_u32) +
314 clib_net_to_host_u32 (in_addr.as_u32) -
315 clib_net_to_host_u32 (det_map->in_addr.as_u32);
316 out_offset = in_offset / det_map->sharing_ratio;
318 clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->out_addr.as_u32) +
322 "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n",
323 format_ip4_address, &in_addr, clib_net_to_host_u16 (ses->in_port),
324 format_ip4_address, &out_addr,
325 clib_net_to_host_u16 (ses->out.out_port), format_ip4_address,
326 &ses->out.ext_host_addr,
327 clib_net_to_host_u16 (ses->out.ext_host_port),
328 format_snat_session_state, ses->state, ses->expire);
334 * fd.io coding-style-patch-verification: ON
337 * eval: (c-set-style "gnu")