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 snat_session_key_t *key = va_arg (*args, snat_session_key_t *);
81 s = format (s, "%U proto %U port %d fib %d",
82 format_ip4_address, &key->addr,
83 format_nat_protocol, key->protocol,
84 clib_net_to_host_u16 (key->port), key->fib_index);
89 format_static_mapping_key (u8 * s, va_list * args)
91 snat_session_key_t *key = va_arg (*args, snat_session_key_t *);
93 s = format (s, "%U proto %U port %d fib %d",
94 format_ip4_address, &key->addr,
95 format_nat_protocol, key->protocol, key->port, key->fib_index);
100 format_snat_session_state (u8 * s, va_list * args)
102 u32 i = va_arg (*args, u32);
107 #define _(v, N, str) case SNAT_SESSION_##N: t = (u8 *) str; break;
108 foreach_snat_session_state
111 t = format (t, "unknown");
113 s = format (s, "%s", t);
118 format_snat_session (u8 * s, va_list * args)
120 snat_main_per_thread_data_t *tsm =
121 va_arg (*args, snat_main_per_thread_data_t *);
122 snat_session_t *sess = va_arg (*args, snat_session_t *);
124 if (snat_is_unk_proto_session (sess))
126 s = format (s, " i2o %U proto %u fib %u\n",
127 format_ip4_address, &sess->in2out.addr,
128 sess->in2out.port, sess->in2out.fib_index);
129 s = format (s, " o2i %U proto %u fib %u\n",
130 format_ip4_address, &sess->out2in.addr,
131 sess->out2in.port, sess->out2in.fib_index);
135 s = format (s, " i2o %U\n", format_snat_key, &sess->in2out);
136 s = format (s, " o2i %U\n", format_snat_key, &sess->out2in);
138 if (is_ed_session (sess) || is_fwd_bypass_session (sess))
140 if (is_twice_nat_session (sess))
142 s = format (s, " external host o2i %U:%d i2o %U:%d\n",
143 format_ip4_address, &sess->ext_host_addr,
144 clib_net_to_host_u16 (sess->ext_host_port),
145 format_ip4_address, &sess->ext_host_nat_addr,
146 clib_net_to_host_u16 (sess->ext_host_nat_port));
150 if (sess->ext_host_addr.as_u32)
151 s = format (s, " external host %U:%u\n",
152 format_ip4_address, &sess->ext_host_addr,
153 clib_net_to_host_u16 (sess->ext_host_port));
156 s = format (s, " index %llu\n", sess - tsm->sessions);
157 s = format (s, " last heard %.2f\n", sess->last_heard);
158 s = format (s, " total pkts %d, total bytes %lld\n",
159 sess->total_pkts, sess->total_bytes);
160 if (snat_is_session_static (sess))
161 s = format (s, " static translation\n");
163 s = format (s, " dynamic translation\n");
164 if (is_fwd_bypass_session (sess))
165 s = format (s, " forwarding-bypass\n");
166 if (is_lb_session (sess))
167 s = format (s, " load-balancing\n");
168 if (is_twice_nat_session (sess))
169 s = format (s, " twice-nat\n");
175 format_snat_user (u8 * s, va_list * args)
177 snat_main_per_thread_data_t *tsm =
178 va_arg (*args, snat_main_per_thread_data_t *);
179 snat_user_t *u = va_arg (*args, snat_user_t *);
180 int verbose = va_arg (*args, int);
181 dlist_elt_t *head, *elt;
182 u32 elt_index, head_index;
184 snat_session_t *sess;
186 s = format (s, "%U: %d dynamic translations, %d static translations\n",
187 format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions);
192 if (u->nsessions || u->nstaticsessions)
194 head_index = u->sessions_per_user_list_head_index;
195 head = pool_elt_at_index (tsm->list_pool, head_index);
197 elt_index = head->next;
198 elt = pool_elt_at_index (tsm->list_pool, elt_index);
199 session_index = elt->value;
201 while (session_index != ~0)
203 sess = pool_elt_at_index (tsm->sessions, session_index);
205 s = format (s, " %U\n", format_snat_session, tsm, sess);
207 elt_index = elt->next;
208 elt = pool_elt_at_index (tsm->list_pool, elt_index);
209 session_index = elt->value;
217 format_snat_static_mapping (u8 * s, va_list * args)
219 snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *);
220 nat44_lb_addr_port_t *local;
222 if (is_identity_static_mapping (m))
224 if (is_addr_only_static_mapping (m))
225 s = format (s, "identity mapping %U",
226 format_ip4_address, &m->local_addr);
228 s = format (s, "identity mapping %U %U:%d",
229 format_nat_protocol, m->proto,
230 format_ip4_address, &m->local_addr, m->local_port);
233 pool_foreach (local, m->locals,
235 s = format (s, " vrf %d", local->vrf_id);
242 if (is_addr_only_static_mapping (m))
243 s = format (s, "local %U external %U vrf %d %s %s",
244 format_ip4_address, &m->local_addr,
245 format_ip4_address, &m->external_addr,
247 m->twice_nat == TWICE_NAT ? "twice-nat" :
248 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
249 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
252 if (is_lb_static_mapping (m))
254 s = format (s, "%U external %U:%d %s %s",
255 format_nat_protocol, m->proto,
256 format_ip4_address, &m->external_addr, m->external_port,
257 m->twice_nat == TWICE_NAT ? "twice-nat" :
258 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
259 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
262 pool_foreach (local, m->locals,
264 s = format (s, "\n local %U:%d vrf %d probability %d\%",
265 format_ip4_address, &local->addr, local->port,
266 local->vrf_id, local->probability);
272 s = format (s, "%U local %U:%d external %U:%d vrf %d %s %s",
273 format_nat_protocol, m->proto,
274 format_ip4_address, &m->local_addr, m->local_port,
275 format_ip4_address, &m->external_addr, m->external_port,
277 m->twice_nat == TWICE_NAT ? "twice-nat" :
278 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
279 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
285 format_snat_static_map_to_resolve (u8 * s, va_list * args)
287 snat_static_map_resolve_t *m = va_arg (*args, snat_static_map_resolve_t *);
288 vnet_main_t *vnm = vnet_get_main ();
291 s = format (s, "local %U external %U vrf %d",
292 format_ip4_address, &m->l_addr,
293 format_vnet_sw_if_index_name, vnm, m->sw_if_index, m->vrf_id);
295 s = format (s, "%U local %U:%d external %U:%d vrf %d",
296 format_nat_protocol, m->proto,
297 format_ip4_address, &m->l_addr, m->l_port,
298 format_vnet_sw_if_index_name, vnm, m->sw_if_index,
299 m->e_port, m->vrf_id);
305 format_det_map_ses (u8 * s, va_list * args)
307 snat_det_map_t *det_map = va_arg (*args, snat_det_map_t *);
308 ip4_address_t in_addr, out_addr;
309 u32 in_offset, out_offset;
310 snat_det_session_t *ses = va_arg (*args, snat_det_session_t *);
311 u32 *i = va_arg (*args, u32 *);
313 u32 user_index = *i / SNAT_DET_SES_PER_USER;
315 clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->in_addr.as_u32) +
318 clib_net_to_host_u32 (in_addr.as_u32) -
319 clib_net_to_host_u32 (det_map->in_addr.as_u32);
320 out_offset = in_offset / det_map->sharing_ratio;
322 clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->out_addr.as_u32) +
326 "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n",
327 format_ip4_address, &in_addr, clib_net_to_host_u16 (ses->in_port),
328 format_ip4_address, &out_addr,
329 clib_net_to_host_u16 (ses->out.out_port), format_ip4_address,
330 &ses->out.ext_host_addr,
331 clib_net_to_host_u16 (ses->out.ext_host_port),
332 format_snat_session_state, ses->state, ses->expire);
338 * fd.io coding-style-patch-verification: ON
341 * eval: (c-set-style "gnu")