FD.io VPP  v18.04-17-g3a0d853
Vector Packet Processing
l2tp.c
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1 /*
2  * l2tp.c : L2TPv3 tunnel support
3  *
4  * Copyright (c) 2013 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <vppinfra/error.h>
19 #include <vppinfra/hash.h>
20 #include <vnet/vnet.h>
21 #include <vnet/ip/ip.h>
22 #include <vnet/l2/l2_input.h>
23 #include <vnet/ethernet/ethernet.h>
24 #include <vnet/l2tp/l2tp.h>
25 
27 
28 /* packet trace format function */
29 u8 *
30 format_l2t_trace (u8 * s, va_list * args)
31 {
32  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
33  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
34  l2t_trace_t *t = va_arg (*args, l2t_trace_t *);
35 
36  if (t->is_user_to_network)
37  s = format (s, "L2T: %U (client) -> %U (our) session %d",
40  else
41  s = format (s, "L2T: %U (our) -> %U (client) session %d)",
44  return s;
45 }
46 
47 u8 *
48 format_l2t_session (u8 * s, va_list * args)
49 {
50  l2t_session_t *session = va_arg (*args, l2t_session_t *);
51  l2t_main_t *lm = &l2t_main;
54 
55  s = format (s, "[%d] %U (our) %U (client) %U (sw_if_index %d)\n",
56  session - lm->sessions,
61  session->sw_if_index);
62 
63  s = format (s, " local cookies %016llx %016llx remote cookie %016llx\n",
64  clib_net_to_host_u64 (session->local_cookie[0]),
65  clib_net_to_host_u64 (session->local_cookie[1]),
66  clib_net_to_host_u64 (session->remote_cookie));
67 
68  s = format (s, " local session-id %d remote session-id %d\n",
69  clib_net_to_host_u32 (session->local_session_id),
70  clib_net_to_host_u32 (session->remote_session_id));
71 
72  s = format (s, " l2 specific sublayer %s\n",
73  session->l2_sublayer_present ? "preset" : "absent");
74 
75  counter_index =
78 
79  vlib_get_combined_counter (&lm->counter_main, counter_index, &v);
80  if (v.packets != 0)
81  s = format (s, " user-to-net: %llu pkts %llu bytes\n",
82  v.packets, v.bytes);
83 
84  vlib_get_combined_counter (&lm->counter_main, counter_index + 1, &v);
85 
86  if (v.packets != 0)
87  s = format (s, " net-to-user: %llu pkts %llu bytes\n",
88  v.packets, v.bytes);
89  return s;
90 }
91 
92 static clib_error_t *
94  unformat_input_t * input, vlib_cli_command_t * cmd)
95 {
96  l2t_session_t *session;
97  l2t_main_t *lm = &l2t_main;
98  char *keystr = 0;
99  int verbose = 0;
100 
101  if (unformat (input, "verbose") || unformat (input, "v"))
102  verbose = 1;
103 
104  if (pool_elts (lm->sessions) == 0)
105  vlib_cli_output (vm, "No l2tp sessions...");
106  else
107  vlib_cli_output (vm, "%u l2tp sessions...", pool_elts (lm->sessions));
108 
109  if (verbose)
110  {
111  switch (lm->lookup_type)
112  {
114  keystr = "src address";
115  break;
116 
118  keystr = "dst address";
119  break;
120 
122  keystr = "session id";
123  break;
124 
125  default:
126  keystr = "BOGUS!";
127  break;
128  }
129 
130  vlib_cli_output (vm, "L2tp session lookup on %s", keystr);
131 
132  /* *INDENT-OFF* */
133  pool_foreach (session, lm->sessions,
134  ({
135  vlib_cli_output (vm, "%U", format_l2t_session, session);
136  }));
137  /* *INDENT-ON* */
138  }
139 
140  return 0;
141 }
142 
143 /* *INDENT-OFF* */
144 VLIB_CLI_COMMAND (show_session_detail_command, static) = {
145  .path = "show l2tpv3",
146  .short_help = "show l2tpv3 [verbose]",
147  .function = show_l2tp_command_fn,
148 };
149 /* *INDENT-ON* */
150 
151 static clib_error_t *
153  unformat_input_t * input, vlib_cli_command_t * cmd)
154 {
155  l2t_session_t *session;
156  l2t_main_t *lm = &l2t_main;
157  u32 session_index;
159  u32 nincr = 0;
160  u32 thread_index = vlib_get_thread_index ();
161 
162  /* *INDENT-OFF* */
163  pool_foreach (session, lm->sessions,
164  ({
165  session_index = session - lm->sessions;
166  counter_index =
167  session_index_to_counter_index (session_index,
168  SESSION_COUNTER_USER_TO_NETWORK);
169  vlib_increment_combined_counter (&lm->counter_main,
170  thread_index,
171  counter_index,
172  1/*pkt*/, 1111 /*bytes*/);
173  vlib_increment_combined_counter (&lm->counter_main,
174  thread_index,
175  counter_index+1,
176  1/*pkt*/, 2222 /*bytes*/);
177  nincr++;
178 
179  }));
180  /* *INDENT-ON* */
181  vlib_cli_output (vm, "Incremented %d active counters\n", nincr);
182 
183  return 0;
184 }
185 
186 /* *INDENT-OFF* */
187 VLIB_CLI_COMMAND (test_counters_command, static) = {
188  .path = "test counters",
189  .short_help = "increment all active counters",
190  .function = test_counters_command_fn,
191 };
192 /* *INDENT-ON* */
193 
194 static clib_error_t *
196  unformat_input_t * input, vlib_cli_command_t * cmd)
197 {
198  l2t_session_t *session;
199  l2t_main_t *lm = &l2t_main;
200  u32 session_index;
202  u32 nincr = 0;
203 
204  /* *INDENT-OFF* */
205  pool_foreach (session, lm->sessions,
206  ({
207  session_index = session - lm->sessions;
208  counter_index =
209  session_index_to_counter_index (session_index,
210  SESSION_COUNTER_USER_TO_NETWORK);
211  vlib_zero_combined_counter (&lm->counter_main, counter_index);
212  vlib_zero_combined_counter (&lm->counter_main, counter_index+1);
213  nincr++;
214  }));
215  /* *INDENT-ON* */
216  vlib_cli_output (vm, "Cleared %d active counters\n", nincr);
217 
218  return 0;
219 }
220 
221 /* *INDENT-OFF* */
222 VLIB_CLI_COMMAND (clear_counters_command, static) = {
223  .path = "clear counters",
224  .short_help = "clear all active counters",
225  .function = clear_counters_command_fn,
226 };
227 /* *INDENT-ON* */
228 
229 static u8 *
230 format_l2tpv3_name (u8 * s, va_list * args)
231 {
232  l2t_main_t *lm = &l2t_main;
233  u32 i = va_arg (*args, u32);
234  u32 show_dev_instance = ~0;
235 
236  if (i < vec_len (lm->dev_inst_by_real))
237  show_dev_instance = lm->dev_inst_by_real[i];
238 
239  if (show_dev_instance != ~0)
240  i = show_dev_instance;
241 
242  return format (s, "l2tpv3_tunnel%d", i);
243 }
244 
245 static int
247 {
248  l2t_main_t *lm = &l2t_main;
249 
251 
252  lm->dev_inst_by_real[hi->dev_instance] = new_dev_instance;
253 
254  return 0;
255 }
256 
257 static uword
259  vlib_node_runtime_t * node, vlib_frame_t * frame)
260 {
261  clib_warning ("you shouldn't be here, leaking buffers...");
262  return frame->n_vectors;
263 }
264 
265 /* *INDENT-OFF* */
266 VNET_DEVICE_CLASS (l2tpv3_device_class,static) = {
267  .name = "L2TPv3",
268  .format_device_name = format_l2tpv3_name,
269  .name_renumber = l2tpv3_name_renumber,
270  .tx_function = dummy_interface_tx,
271 };
272 /* *INDENT-ON* */
273 
274 static u8 *
275 format_l2tp_header_with_length (u8 * s, va_list * args)
276 {
277  u32 dev_instance = va_arg (*args, u32);
278  s = format (s, "unimplemented dev %u", dev_instance);
279  return s;
280 }
281 
282 /* *INDENT-OFF* */
283 VNET_HW_INTERFACE_CLASS (l2tpv3_hw_class) = {
284  .name = "L2TPV3",
285  .format_header = format_l2tp_header_with_length,
286  .build_rewrite = default_build_rewrite,
288 };
289 /* *INDENT-ON* */
290 
291 int
293  ip6_address_t * client_address,
294  ip6_address_t * our_address,
296  u32 remote_session_id,
297  u64 local_cookie,
298  u64 remote_cookie,
299  int l2_sublayer_present,
300  u32 encap_fib_index, u32 * sw_if_index)
301 {
302  l2t_session_t *s = 0;
303  vnet_main_t *vnm = lm->vnet_main;
305  uword *p = (uword *) ~ 0;
306  u32 hw_if_index;
307  l2tpv3_header_t l2tp_hdr;
308  ip6_address_t *dst_address_copy, *src_address_copy;
310 
311  remote_session_id = clib_host_to_net_u32 (remote_session_id);
312  local_session_id = clib_host_to_net_u32 (local_session_id);
313 
314  switch (lm->lookup_type)
315  {
317  p = hash_get_mem (lm->session_by_src_address, client_address);
318  break;
319 
321  p = hash_get_mem (lm->session_by_dst_address, our_address);
322  break;
323 
325  p = hash_get (lm->session_by_session_id, local_session_id);
326  break;
327 
328  default:
329  ASSERT (0);
330  }
331 
332  /* adding a session: session must not already exist */
333  if (p)
334  return VNET_API_ERROR_INVALID_VALUE;
335 
336  pool_get (lm->sessions, s);
337  memset (s, 0, sizeof (*s));
338  clib_memcpy (&s->our_address, our_address, sizeof (s->our_address));
339  clib_memcpy (&s->client_address, client_address,
340  sizeof (s->client_address));
341  s->local_cookie[0] = clib_host_to_net_u64 (local_cookie);
342  s->remote_cookie = clib_host_to_net_u64 (remote_cookie);
344  s->remote_session_id = remote_session_id;
345  s->l2_sublayer_present = l2_sublayer_present;
346  /* precompute l2tp header size */
347  s->l2tp_hdr_size = l2_sublayer_present ?
348  sizeof (l2tpv3_header_t) :
349  sizeof (l2tpv3_header_t) - sizeof (l2tp_hdr.l2_specific_sublayer);
350  s->admin_up = 0;
351  s->encap_fib_index = encap_fib_index;
352 
353  /* Setup hash table entries */
354  switch (lm->lookup_type)
355  {
357  src_address_copy = clib_mem_alloc (sizeof (*src_address_copy));
358  clib_memcpy (src_address_copy, client_address,
359  sizeof (*src_address_copy));
360  hash_set_mem (lm->session_by_src_address, src_address_copy,
361  s - lm->sessions);
362  break;
364  dst_address_copy = clib_mem_alloc (sizeof (*dst_address_copy));
365  clib_memcpy (dst_address_copy, our_address, sizeof (*dst_address_copy));
366  hash_set_mem (lm->session_by_dst_address, dst_address_copy,
367  s - lm->sessions);
368  break;
370  hash_set (lm->session_by_session_id, local_session_id,
371  s - lm->sessions);
372  break;
373 
374  default:
375  ASSERT (0);
376  }
377 
378  /* validate counters */
379  counter_index =
382  vlib_validate_combined_counter (&lm->counter_main, counter_index);
383  vlib_validate_combined_counter (&lm->counter_main, counter_index + 1);
384 
386  {
387  hw_if_index = lm->free_l2tpv3_tunnel_hw_if_indices
389  _vec_len (lm->free_l2tpv3_tunnel_hw_if_indices) -= 1;
390 
391  hi = vnet_get_hw_interface (vnm, hw_if_index);
392  hi->dev_instance = s - lm->sessions;
393  hi->hw_instance = hi->dev_instance;
394  }
395  else
396  {
397  hw_if_index = vnet_register_interface
398  (vnm, l2tpv3_device_class.index, s - lm->sessions,
399  l2tpv3_hw_class.index, s - lm->sessions);
400  hi = vnet_get_hw_interface (vnm, hw_if_index);
401  hi->output_node_index = l2t_encap_node.index;
402  /* $$$$ initialize custom dispositions, if needed */
403  }
404 
405  s->hw_if_index = hw_if_index;
406  s->sw_if_index = hi->sw_if_index;
407 
408  if (sw_if_index)
409  *sw_if_index = hi->sw_if_index;
410 
411  return 0;
412 }
413 
414 static clib_error_t *
416  unformat_input_t * input,
417  vlib_cli_command_t * cmd)
418 {
419  ip6_address_t client_address, our_address;
420  unformat_input_t _line_input, *line_input = &_line_input;
421  l2t_main_t *lm = &l2t_main;
422  u64 local_cookie = (u64) ~ 0, remote_cookie = (u64) ~ 0;
423  u32 local_session_id = 1, remote_session_id = 1;
424  int our_address_set = 0, client_address_set = 0;
425  int l2_sublayer_present = 0;
426  int rv;
427  u32 sw_if_index;
428  u32 encap_fib_id = ~0;
429  u32 encap_fib_index = ~0;
430  clib_error_t *error = NULL;
431 
432  /* Get a line of input. */
433  if (!unformat_user (input, unformat_line_input, line_input))
434  return 0;
435 
436  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
437  {
438  if (unformat (line_input, "client %U",
439  unformat_ip6_address, &client_address))
440  client_address_set = 1;
441  else if (unformat (line_input, "our %U",
442  unformat_ip6_address, &our_address))
443  our_address_set = 1;
444  else if (unformat (line_input, "local-cookie %llx", &local_cookie))
445  ;
446  else if (unformat (line_input, "remote-cookie %llx", &remote_cookie))
447  ;
448  else if (unformat (line_input, "local-session-id %d",
449  &local_session_id))
450  ;
451  else if (unformat (line_input, "remote-session-id %d",
452  &remote_session_id))
453  ;
454  else if (unformat (line_input, "fib-id %d", &encap_fib_id))
455  ;
456  else if (unformat (line_input, "l2-sublayer-present"))
457  l2_sublayer_present = 1;
458  else
459  {
460  error = clib_error_return (0, "parse error: '%U'",
461  format_unformat_error, line_input);
462  goto done;
463  }
464  }
465 
466  if (encap_fib_id != ~0)
467  {
468  uword *p;
469  ip6_main_t *im = &ip6_main;
470  if (!(p = hash_get (im->fib_index_by_table_id, encap_fib_id)))
471  {
472  error = clib_error_return (0, "No fib with id %d", encap_fib_id);
473  goto done;
474  }
475  encap_fib_index = p[0];
476  }
477  else
478  {
479  encap_fib_index = ~0;
480  }
481 
482  if (our_address_set == 0)
483  {
484  error = clib_error_return (0, "our address not specified");
485  goto done;
486  }
487  if (client_address_set == 0)
488  {
489  error = clib_error_return (0, "client address not specified");
490  goto done;
491  }
492 
493  rv = create_l2tpv3_ipv6_tunnel (lm, &client_address, &our_address,
494  local_session_id, remote_session_id,
495  local_cookie, remote_cookie,
496  l2_sublayer_present,
497  encap_fib_index, &sw_if_index);
498  switch (rv)
499  {
500  case 0:
502  vnet_get_main (), sw_if_index);
503  break;
504  case VNET_API_ERROR_INVALID_VALUE:
505  error = clib_error_return (0, "session already exists...");
506  goto done;
507 
508  case VNET_API_ERROR_NO_SUCH_ENTRY:
509  error = clib_error_return (0, "session does not exist...");
510  goto done;
511 
512  default:
513  error = clib_error_return (0, "l2tp_session_add_del returned %d", rv);
514  goto done;
515  }
516 
517 done:
518  unformat_free (line_input);
519 
520  return error;
521 }
522 
523 /* *INDENT-OFF* */
524 VLIB_CLI_COMMAND (create_l2tpv3_tunnel_command, static) =
525 {
526  .path = "create l2tpv3 tunnel",
527  .short_help =
528  "create l2tpv3 tunnel client <ip6> our <ip6> local-cookie <hex> remote-cookie <hex> local-session <dec> remote-session <dec>",
530 };
531 /* *INDENT-ON* */
532 
533 int
535  u32 sw_if_index,
536  u64 new_local_cookie, u64 new_remote_cookie)
537 {
538  l2t_session_t *s;
540  vnet_main_t *vnm = vnet_get_main ();
541  hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
542 
544  return VNET_API_ERROR_INVALID_VALUE;
545 
546  s = pool_elt_at_index (lm->sessions, hi->dev_instance);
547 
548  s->local_cookie[1] = s->local_cookie[0];
549  s->local_cookie[0] = clib_host_to_net_u64 (new_local_cookie);
550  s->remote_cookie = clib_host_to_net_u64 (new_remote_cookie);
551 
552  return 0;
553 }
554 
555 
556 static clib_error_t *
558  unformat_input_t * input,
559  vlib_cli_command_t * cmd)
560 {
561  l2t_main_t *lm = &l2t_main;
562  vnet_main_t *vnm = vnet_get_main ();
563  u32 sw_if_index = ~0;
564  u64 local_cookie = (u64) ~ 0, remote_cookie = (u64) ~ 0;
565 
566  int rv;
567 
569  {
570  if (unformat (input, "%U", unformat_vnet_sw_interface, vnm,
571  &sw_if_index))
572  ;
573  else if (unformat (input, "local %llx", &local_cookie))
574  ;
575  else if (unformat (input, "remote %llx", &remote_cookie))
576  ;
577  else
578  break;
579  }
580  if (sw_if_index == ~0)
581  return clib_error_return (0, "unknown interface");
582  if (local_cookie == ~0)
583  return clib_error_return (0, "local cookie required");
584  if (remote_cookie == ~0)
585  return clib_error_return (0, "remote cookie required");
586 
587  rv = l2tpv3_set_tunnel_cookies (lm, sw_if_index,
588  local_cookie, remote_cookie);
589 
590  switch (rv)
591  {
592  case 0:
593  break;
594 
595  case VNET_API_ERROR_INVALID_SW_IF_INDEX:
596  return clib_error_return (0, "invalid interface");
597 
598  default:
599  return clib_error_return (0, "l2tp_session_set_cookies returned %d",
600  rv);
601  }
602 
603  return 0;
604 }
605 
606 /* *INDENT-OFF* */
607 VLIB_CLI_COMMAND (set_l2tp_tunnel_cookie_command, static) =
608 {
609  .path = "set l2tpv3 tunnel cookie",
610  .short_help =
611  "set l2tpv3 tunnel cookie <intfc> local <hex> remote <hex>",
613 };
614 /* *INDENT-ON* */
615 
616 int
618  u32 sw_if_index, int enable_disable)
619 {
620 
621  if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
622  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
623 
624  vnet_feature_enable_disable ("ip6-unicast", "l2tp-decap", sw_if_index,
625  enable_disable, 0, 0);
626  return 0;
627 }
628 
629 /* Enable/disable L2TPv3 intercept on IP6 fowarding path */
630 static clib_error_t *
632  unformat_input_t * input, vlib_cli_command_t * cmd)
633 {
634  u32 sw_if_index = ~0;
635  int is_add = 1;
636  int rv;
637  vnet_main_t *vnm = vnet_get_main ();
638 
640  {
641  if (unformat (input, "%U", unformat_vnet_sw_interface, vnm,
642  &sw_if_index))
643  ;
644  else if (unformat (input, "del"))
645  is_add = 0;
646  else
647  break;
648  }
649 
650  if (sw_if_index == ~0)
651  return clib_error_return (0, "interface required");
652 
653  rv = l2tpv3_interface_enable_disable (vnm, sw_if_index, is_add);
654 
655  switch (rv)
656  {
657  case 0:
658  break;
659 
660  case VNET_API_ERROR_INVALID_SW_IF_INDEX:
661  return clib_error_return (0, "invalid interface");
662 
663  default:
664  return clib_error_return (0,
665  "l2tp_interface_enable_disable returned %d",
666  rv);
667  }
668  return 0;
669 }
670 
671 /* *INDENT-OFF* */
672 VLIB_CLI_COMMAND (set_interface_ip6_l2tpv3, static) =
673 {
674  .path = "set interface ip6 l2tpv3",
675  .function = set_ip6_l2tpv3,
676  .short_help = "set interface ip6 l2tpv3 <intfc> [del]",
677 };
678 /* *INDENT-ON* */
679 
680 static clib_error_t *
682 {
683  l2t_main_t *lm = &l2t_main;
684 
686  {
687  if (unformat (input, "lookup-v6-src"))
689  else if (unformat (input, "lookup-v6-dst"))
691  else if (unformat (input, "lookup-session-id"))
693  else
694  return clib_error_return (0, "unknown input `%U'",
695  format_unformat_error, input);
696  }
697  return 0;
698 }
699 
701 
702 
703 clib_error_t *
705 {
706  l2t_main_t *lm = &l2t_main;
707  vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
708  if (hi->hw_class_index != l2tpv3_hw_class.index)
709  return 0;
710 
711  u32 session_index = hi->dev_instance;
712  l2t_session_t *s = pool_elt_at_index (lm->sessions, session_index);
713  s->admin_up = ! !(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP);
714  return 0;
715 }
716 
718 
719 clib_error_t *
721 {
722  l2t_main_t *lm = &l2t_main;
723  ip_main_t *im = &ip_main;
724  ip_protocol_info_t *pi;
725 
726  lm->vnet_main = vnet_get_main ();
727  lm->vlib_main = vm;
729 
731  (0, sizeof (ip6_address_t) /* key bytes */ ,
732  sizeof (u32) /* value bytes */ );
734  (0, sizeof (ip6_address_t) /* key bytes */ ,
735  sizeof (u32) /* value bytes */ );
736  lm->session_by_session_id = hash_create (0, sizeof (uword));
737 
738  pi = ip_get_protocol_info (im, IP_PROTOCOL_L2TP);
740 
741  /* insure these nodes are included in build */
742  l2tp_encap_init (vm);
743  l2tp_decap_init ();
744 
745  return 0;
746 }
747 
749 
750 clib_error_t *
752 {
753  l2tp_encap_init (vm);
754 
755  return 0;
756 }
757 
759 
760 /*
761  * fd.io coding-style-patch-verification: ON
762  *
763  * Local Variables:
764  * eval: (c-set-style "gnu")
765  * End:
766  */
int is_user_to_network
Definition: l2tp.h:88
u64 local_cookie[2]
Definition: l2tp.h:32
vmrglw vmrglh hi
#define hash_set(h, key, value)
Definition: hash.h:254
ip6_address_t client_address
Definition: l2tp.h:91
#define CLIB_UNUSED(x)
Definition: clib.h:79
void vlib_validate_combined_counter(vlib_combined_counter_main_t *cm, u32 index)
validate a combined counter
Definition: counter.c:89
static u8 * format_l2tpv3_name(u8 *s, va_list *args)
Definition: l2tp.c:230
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
vnet_interface_main_t interface_main
Definition: vnet.h:56
uword * session_by_session_id
Definition: l2tp.h:66
#define NULL
Definition: clib.h:55
ip6_address_t our_address
Definition: l2tp.h:28
vlib_node_registration_t l2t_encap_node
(constructor) VLIB_REGISTER_NODE (l2t_encap_node)
Definition: encap.c:60
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
u32 encap_fib_index
Definition: l2tp.h:42
Combined counter to hold both packets and byte differences.
Definition: counter.h:139
int i
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
#define hash_set_mem(h, key, value)
Definition: hash.h:274
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
unformat_function_t unformat_vnet_sw_interface
Definition: ip.h:109
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:227
u64 remote_cookie
Definition: l2tp.h:33
static u32 session_index_to_counter_index(u32 session_index, u32 counter_id)
Definition: l2tp.h:106
format_function_t format_vnet_sw_if_index_name
VNET_HW_INTERFACE_CLASS(l2tpv3_hw_class)
ip6_address_t client_address
Definition: l2tp.h:29
static int l2tpv3_name_renumber(vnet_hw_interface_t *hi, u32 new_dev_instance)
Definition: l2tp.c:246
unformat_function_t * unformat_pg_edit
Definition: ip.h:90
l2t_main_t l2t_main
Definition: l2tp.c:26
VLIB_WORKER_INIT_FUNCTION(l2tp_worker_init)
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:440
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
VNET_DEVICE_CLASS(l2tpv3_device_class, static)
static u32 counter_index(vlib_main_t *vm, vlib_error_t e)
#define clib_error_return(e, args...)
Definition: error.h:99
unsigned long u64
Definition: types.h:89
clib_error_t * l2tp_init(vlib_main_t *vm)
Definition: l2tp.c:720
void l2tp_encap_init(vlib_main_t *vm)
Definition: encap.c:222
int l2tpv3_interface_enable_disable(vnet_main_t *vnm, u32 sw_if_index, int enable_disable)
Definition: l2tp.c:617
static clib_error_t * test_counters_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: l2tp.c:152
u32 vnet_register_interface(vnet_main_t *vnm, u32 dev_class_index, u32 dev_instance, u32 hw_class_index, u32 hw_instance)
Definition: interface.c:705
static clib_error_t * set_l2tp_tunnel_cookie_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: l2tp.c:557
u32 hw_if_index
Definition: l2tp.h:38
unformat_function_t unformat_line_input
Definition: format.h:281
#define hash_create_mem(elts, key_bytes, value_bytes)
Definition: hash.h:660
#define hash_get(h, key)
Definition: hash.h:248
format_function_t format_vnet_sw_interface_name
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:461
static ip_protocol_info_t * ip_get_protocol_info(ip_main_t *im, u32 protocol)
Definition: ip.h:136
counter_t packets
packet counter
Definition: counter.h:141
u32 local_session_id
Definition: l2tp.h:34
u8 * format_l2t_trace(u8 *s, va_list *args)
Definition: l2tp.c:30
#define v
Definition: acl.c:495
struct _unformat_input_t unformat_input_t
#define VLIB_CONFIG_FUNCTION(x, n,...)
Definition: init.h:119
static u32 local_session_id(local_session_t *ll)
Definition: application.h:212
ip6_to_l2_lookup_t lookup_type
Definition: l2tp.h:68
uword * fib_index_by_table_id
Definition: ip6.h:186
unformat_function_t unformat_ip6_address
Definition: format.h:94
ip6_address_t our_address
Definition: l2tp.h:90
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
static clib_error_t * create_l2tpv3_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: l2tp.c:415
u16 n_vectors
Definition: node.h:344
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:221
format_function_t format_ip6_address
Definition: format.h:95
static void vlib_get_combined_counter(const vlib_combined_counter_main_t *cm, u32 index, vlib_counter_t *result)
Get the value of a combined counter, never called in the speed path Scrapes the entire set of per-thr...
Definition: counter.h:250
vlib_main_t * vm
Definition: buffer.c:294
u32 * free_l2tpv3_tunnel_hw_if_indices
Definition: l2tp.h:74
ip_main_t ip_main
Definition: ip_init.c:42
clib_error_t * l2tp_sw_interface_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: l2tp.c:704
uword unformat_pg_l2tp_header(unformat_input_t *input, va_list *args)
Definition: pg.c:41
#define clib_warning(format, args...)
Definition: error.h:59
#define clib_memcpy(a, b, c)
Definition: string.h:75
u8 * format_l2t_session(u8 *s, va_list *args)
Definition: l2tp.c:48
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:270
u8 * default_build_rewrite(vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
Return a complete, zero-length (aka dummy) rewrite.
Definition: interface.c:1500
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
clib_error_t * l2tp_worker_init(vlib_main_t *vm)
Definition: l2tp.c:751
#define hash_create(elts, value_bytes)
Definition: hash.h:681
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:588
#define ASSERT(truth)
vlib_main_t * vlib_main
Definition: l2tp.h:80
u32 remote_session_id
Definition: l2tp.h:35
unsigned int u32
Definition: types.h:88
ip6_main_t ip6_main
Definition: ip6_forward.c:2750
int create_l2tpv3_ipv6_tunnel(l2t_main_t *lm, ip6_address_t *client_address, ip6_address_t *our_address, u32 local_session_id, u32 remote_session_id, u64 local_cookie, u64 remote_cookie, int l2_sublayer_present, u32 encap_fib_index, u32 *sw_if_index)
Definition: l2tp.c:292
static uword dummy_interface_tx(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: l2tp.c:258
vnet_main_t * vnet_main
Definition: l2tp.h:81
uword * session_by_dst_address
Definition: l2tp.h:65
static void * clib_mem_alloc(uword size)
Definition: mem.h:112
vlib_combined_counter_main_t counter_main
Definition: l2tp.h:71
u64 uword
Definition: types.h:112
counter_t bytes
byte counter
Definition: counter.h:142
void l2tp_decap_init(void)
Definition: decap.c:298
u8 l2tp_hdr_size
Definition: l2tp.h:44
static clib_error_t * l2tp_config(vlib_main_t *vm, unformat_input_t *input)
Definition: l2tp.c:681
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
unsigned char u8
Definition: types.h:56
static void unformat_free(unformat_input_t *i)
Definition: format.h:161
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:709
a point 2 point interface
Definition: interface.h:285
l2t_session_t * sessions
Definition: l2tp.h:61
#define hash_get_mem(h, key)
Definition: hash.h:268
static clib_error_t * clear_counters_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: l2tp.c:195
static u8 * format_l2tp_header_with_length(u8 *s, va_list *args)
Definition: l2tp.c:275
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
static clib_error_t * show_l2tp_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: l2tp.c:93
u8 admin_up
Definition: l2tp.h:48
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(l2tp_sw_interface_up_down)
u32 * dev_inst_by_real
Definition: l2tp.h:77
uword * session_by_src_address
Definition: l2tp.h:64
u8 l2_sublayer_present
Definition: l2tp.h:45
u32 flags
Definition: vhost-user.h:77
#define vec_validate_init_empty(V, I, INIT)
Make sure vector is long enough for given index and initialize empty space (no header, unspecified alignment)
Definition: vec.h:483
u32 sw_if_index
Definition: l2tp.h:39
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:680
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
int vnet_feature_enable_disable(const char *arc_name, const char *node_name, u32 sw_if_index, int enable_disable, void *feature_config, u32 n_feature_config_bytes)
Definition: feature.c:233
u32 session_index
Definition: l2tp.h:89
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169
int l2tpv3_set_tunnel_cookies(l2t_main_t *lm, u32 sw_if_index, u64 new_local_cookie, u64 new_remote_cookie)
Definition: l2tp.c:534
static clib_error_t * set_ip6_l2tpv3(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: l2tp.c:631
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128