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_det.h>
24 unformat_snat_protocol (unformat_input_t * input, va_list * args)
26 u32 *r = va_arg (*args, u32 *);
29 #define _(N, i, n, s) else if (unformat (input, s)) *r = SNAT_PROTOCOL_##N;
38 format_snat_protocol (u8 * s, va_list * args)
40 u32 i = va_arg (*args, u32);
45 #define _(N, j, n, str) case SNAT_PROTOCOL_##N: t = (u8 *) str; break;
49 s = format (s, "unknown");
52 s = format (s, "%s", t);
57 format_nat_addr_and_port_alloc_alg (u8 * s, va_list * args)
59 u32 i = va_arg (*args, u32);
64 #define _(v, N, s) case NAT_ADDR_AND_PORT_ALLOC_ALG_##N: t = (u8 *) s; break;
65 foreach_nat_addr_and_port_alloc_alg
68 s = format (s, "unknown");
71 s = format (s, "%s", t);
76 format_snat_key (u8 * s, va_list * args)
78 snat_session_key_t *key = va_arg (*args, snat_session_key_t *);
80 s = format (s, "%U proto %U port %d fib %d",
81 format_ip4_address, &key->addr,
82 format_snat_protocol, key->protocol,
83 clib_net_to_host_u16 (key->port), key->fib_index);
88 format_static_mapping_key (u8 * s, va_list * args)
90 snat_session_key_t *key = va_arg (*args, snat_session_key_t *);
92 s = format (s, "%U proto %U port %d fib %d",
93 format_ip4_address, &key->addr,
94 format_snat_protocol, key->protocol, key->port, key->fib_index);
99 format_snat_session_state (u8 * s, va_list * args)
101 u32 i = va_arg (*args, u32);
106 #define _(v, N, str) case SNAT_SESSION_##N: t = (u8 *) str; break;
107 foreach_snat_session_state
110 t = format (t, "unknown");
112 s = format (s, "%s", t);
117 format_snat_session (u8 * s, va_list * args)
119 snat_main_per_thread_data_t *sm =
120 va_arg (*args, snat_main_per_thread_data_t *);
121 snat_session_t *sess = va_arg (*args, snat_session_t *);
123 if (snat_is_unk_proto_session (sess))
125 s = format (s, " i2o %U proto %u fib %u\n",
126 format_ip4_address, &sess->in2out.addr,
127 sess->in2out.port, sess->in2out.fib_index);
128 s = format (s, " o2i %U proto %u fib %u\n",
129 format_ip4_address, &sess->out2in.addr,
130 sess->out2in.port, sess->out2in.fib_index);
134 s = format (s, " i2o %U\n", format_snat_key, &sess->in2out);
135 s = format (s, " o2i %U\n", format_snat_key, &sess->out2in);
137 if (is_ed_session (sess) || is_fwd_bypass_session (sess))
139 if (is_twice_nat_session (sess))
141 s = format (s, " external host o2i %U:%d i2o %U:%d\n",
142 format_ip4_address, &sess->ext_host_addr,
143 clib_net_to_host_u16 (sess->ext_host_port),
144 format_ip4_address, &sess->ext_host_nat_addr,
145 clib_net_to_host_u16 (sess->ext_host_nat_port));
149 if (sess->ext_host_addr.as_u32)
150 s = format (s, " external host %U:%u\n",
151 format_ip4_address, &sess->ext_host_addr,
152 clib_net_to_host_u16 (sess->ext_host_port));
155 s = format (s, " index %llu\n", sess - sm->sessions);
156 s = format (s, " last heard %.2f\n", sess->last_heard);
157 s = format (s, " total pkts %d, total bytes %lld\n",
158 sess->total_pkts, sess->total_bytes);
159 if (snat_is_session_static (sess))
160 s = format (s, " static translation\n");
162 s = format (s, " dynamic translation\n");
163 if (is_fwd_bypass_session (sess))
164 s = format (s, " forwarding-bypass\n");
165 if (is_lb_session (sess))
166 s = format (s, " load-balancing\n");
167 if (is_twice_nat_session (sess))
168 s = format (s, " twice-nat\n");
174 format_snat_user (u8 * s, va_list * args)
176 snat_main_per_thread_data_t *sm =
177 va_arg (*args, snat_main_per_thread_data_t *);
178 snat_user_t *u = va_arg (*args, snat_user_t *);
179 int verbose = va_arg (*args, int);
180 dlist_elt_t *head, *elt;
181 u32 elt_index, head_index;
183 snat_session_t *sess;
185 s = format (s, "%U: %d dynamic translations, %d static translations\n",
186 format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions);
191 if (u->nsessions || u->nstaticsessions)
193 head_index = u->sessions_per_user_list_head_index;
194 head = pool_elt_at_index (sm->list_pool, head_index);
196 elt_index = head->next;
197 elt = pool_elt_at_index (sm->list_pool, elt_index);
198 session_index = elt->value;
200 while (session_index != ~0)
202 sess = pool_elt_at_index (sm->sessions, session_index);
204 s = format (s, " %U\n", format_snat_session, sm, sess);
206 elt_index = elt->next;
207 elt = pool_elt_at_index (sm->list_pool, elt_index);
208 session_index = elt->value;
216 format_snat_static_mapping (u8 * s, va_list * args)
218 snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *);
219 nat44_lb_addr_port_t *local;
221 if (is_identity_static_mapping (m))
223 if (is_addr_only_static_mapping (m))
224 s = format (s, "identity mapping %U",
225 format_ip4_address, &m->local_addr);
227 s = format (s, "identity mapping %U %U:%d",
228 format_snat_protocol, m->proto,
229 format_ip4_address, &m->local_addr, m->local_port);
232 pool_foreach (local, m->locals,
234 s = format (s, " vrf %d", local->vrf_id);
241 if (is_addr_only_static_mapping (m))
242 s = format (s, "local %U external %U vrf %d %s %s",
243 format_ip4_address, &m->local_addr,
244 format_ip4_address, &m->external_addr,
246 m->twice_nat == TWICE_NAT ? "twice-nat" :
247 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
248 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
251 if (is_lb_static_mapping (m))
253 s = format (s, "%U external %U:%d %s %s",
254 format_snat_protocol, m->proto,
255 format_ip4_address, &m->external_addr, m->external_port,
256 m->twice_nat == TWICE_NAT ? "twice-nat" :
257 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
258 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
261 pool_foreach (local, m->locals,
263 s = format (s, "\n local %U:%d vrf %d probability %d\%",
264 format_ip4_address, &local->addr, local->port,
265 local->vrf_id, local->probability);
271 s = format (s, "%U local %U:%d external %U:%d vrf %d %s %s",
272 format_snat_protocol, m->proto,
273 format_ip4_address, &m->local_addr, m->local_port,
274 format_ip4_address, &m->external_addr, m->external_port,
276 m->twice_nat == TWICE_NAT ? "twice-nat" :
277 m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
278 is_out2in_only_static_mapping (m) ? "out2in-only" : "");
284 format_snat_static_map_to_resolve (u8 * s, va_list * args)
286 snat_static_map_resolve_t *m = va_arg (*args, snat_static_map_resolve_t *);
287 vnet_main_t *vnm = vnet_get_main ();
290 s = format (s, "local %U external %U vrf %d",
291 format_ip4_address, &m->l_addr,
292 format_vnet_sw_if_index_name, vnm, m->sw_if_index, m->vrf_id);
294 s = format (s, "%U local %U:%d external %U:%d vrf %d",
295 format_snat_protocol, m->proto,
296 format_ip4_address, &m->l_addr, m->l_port,
297 format_vnet_sw_if_index_name, vnm, m->sw_if_index,
298 m->e_port, m->vrf_id);
304 format_det_map_ses (u8 * s, va_list * args)
306 snat_det_map_t *det_map = va_arg (*args, snat_det_map_t *);
307 ip4_address_t in_addr, out_addr;
308 u32 in_offset, out_offset;
309 snat_det_session_t *ses = va_arg (*args, snat_det_session_t *);
310 u32 *i = va_arg (*args, u32 *);
312 u32 user_index = *i / SNAT_DET_SES_PER_USER;
314 clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->in_addr.as_u32) +
317 clib_net_to_host_u32 (in_addr.as_u32) -
318 clib_net_to_host_u32 (det_map->in_addr.as_u32);
319 out_offset = in_offset / det_map->sharing_ratio;
321 clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->out_addr.as_u32) +
325 "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n",
326 format_ip4_address, &in_addr, clib_net_to_host_u16 (ses->in_port),
327 format_ip4_address, &out_addr,
328 clib_net_to_host_u16 (ses->out.out_port), format_ip4_address,
329 &ses->out.ext_host_addr,
330 clib_net_to_host_u16 (ses->out.ext_host_port),
331 format_snat_session_state, ses->state, ses->expire);
337 * fd.io coding-style-patch-verification: ON
340 * eval: (c-set-style "gnu")