FD.io VPP  v19.01.3-6-g70449b9b9
Vector Packet Processing
l2_fib.c
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1 /*
2  * l2_fib.c : layer 2 forwarding table (aka mac table)
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 
19 #include <vlib/vlib.h>
20 #include <vnet/vnet.h>
21 #include <vnet/pg/pg.h>
22 #include <vnet/ethernet/ethernet.h>
23 #include <vlib/cli.h>
24 
25 #include <vppinfra/error.h>
26 #include <vppinfra/hash.h>
27 #include <vnet/l2/l2_input.h>
28 #include <vnet/l2/l2_fib.h>
29 #include <vnet/l2/l2_learn.h>
30 #include <vnet/l2/l2_bd.h>
31 
33 
34 #include <vlibmemory/api.h>
35 #include <vnet/vnet_msg_enum.h>
36 
37 #define vl_typedefs /* define message structures */
38 #include <vnet/vnet_all_api_h.h>
39 #undef vl_typedefs
40 
41 #define vl_endianfun /* define message structures */
42 #include <vnet/vnet_all_api_h.h>
43 #undef vl_endianfun
44 
45 /**
46  * @file
47  * @brief Ethernet MAC Address FIB Table Management.
48  *
49  * The MAC Address forwarding table for bridge-domains is called the l2fib.
50  * Entries are added automatically as part of mac learning, but MAC Addresses
51  * entries can also be added manually.
52  *
53  */
54 
56 
57 u8 *
58 format_l2fib_entry_result_flags (u8 * s, va_list * args)
59 {
60  l2fib_entry_result_flags_t flags = va_arg (*args, int);
61 
62  if (L2FIB_ENTRY_RESULT_FLAG_NONE == flags)
63  {
64  s = format (s, "none");
65  }
66  else
67  {
68 #define _(a,v,t) { \
69  if (flags & L2FIB_ENTRY_RESULT_FLAG_##a) \
70  s = format (s, "%s ", t); \
71  }
73 #undef _
74  }
75  return (s);
76 }
77 
78 static void
80 {
81  u64 tmp = *((u64 *) mac);
82  tmp = clib_net_to_host_u64 (tmp);
83  tmp += 1 << 16; /* skip unused (least significant) octets */
84  tmp = clib_host_to_net_u64 (tmp);
85 
86  clib_memcpy_fast (mac, &tmp, 6);
87 }
88 
89 /** Format sw_if_index. If the value is ~0, use the text "N/A" */
90 u8 *
92 {
93  vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
94  u32 sw_if_index = va_arg (*args, u32);
95  if (sw_if_index == ~0)
96  return format (s, "N/A");
97 
98  vnet_sw_interface_t *swif = vnet_get_sw_interface_safe (vnm, sw_if_index);
99  if (!swif)
100  return format (s, "Stale");
101 
102  return format (s, "%U", format_vnet_sw_interface_name, vnm,
103  vnet_get_sw_interface_safe (vnm, sw_if_index));
104 }
105 
107 {
112 
113 static void
114 l2fib_dump_walk_cb (BVT (clib_bihash_kv) * kvp, void *arg)
115 {
116  l2fib_dump_walk_ctx_t *ctx = arg;
117  l2fib_entry_result_t result;
118  l2fib_entry_key_t key;
119 
120  key.raw = kvp->key;
121  result.raw = kvp->value;
122 
123  if ((ctx->bd_index == ~0) || (ctx->bd_index == key.fields.bd_index))
124  {
125  vec_add1 (ctx->l2fe_key, key);
126  vec_add1 (ctx->l2fe_res, result);
127  }
128 }
129 
130 void
134 {
135  l2fib_main_t *msm = &l2fib_main;
137  .bd_index = bd_index,
138  };
139 
141  (&msm->mac_table, l2fib_dump_walk_cb, &ctx);
142 
143  *l2fe_key = ctx.l2fe_key;
144  *l2fe_res = ctx.l2fe_res;
145 }
146 
148 {
159 
160 static void
161 l2fib_show_walk_cb (BVT (clib_bihash_kv) * kvp, void *arg)
162 {
163  l2fib_show_walk_ctx_t *ctx = arg;
164  l2_bridge_domain_t *bd_config;
165  l2fib_entry_result_t result;
166  l2fib_entry_key_t key;
167 
168  if (ctx->verbose && ctx->first_entry)
169  {
170  ctx->first_entry = 0;
171  vlib_cli_output (ctx->vm,
172  "%=19s%=7s%=7s%=8s%=9s%=7s%=7s%=5s%=30s",
173  "Mac-Address", "BD-Idx", "If-Idx",
174  "BSN-ISN", "Age(min)", "static", "filter",
175  "bvi", "Interface-Name");
176  }
177 
178  key.raw = kvp->key;
179  result.raw = kvp->value;
180  ctx->total_entries++;
181 
182  if (ctx->verbose &&
183  ((ctx->bd_index >> 31) || (ctx->bd_index == key.fields.bd_index)))
184  {
185  u8 *s = NULL;
186 
187  if (ctx->learn && l2fib_entry_result_is_set_AGE_NOT (&result))
188  return; /* skip provisioned macs */
189 
190  if (ctx->add && !l2fib_entry_result_is_set_AGE_NOT (&result))
191  return; /* skip learned macs */
192 
194  key.fields.bd_index);
195 
196  if (l2fib_entry_result_is_set_AGE_NOT (&result))
197  s = format (s, "no");
198  else if (bd_config->mac_age == 0)
199  s = format (s, "-");
200  else
201  {
202  i16 delta = ctx->now - result.fields.timestamp;
203  delta += delta < 0 ? 256 : 0;
204  s = format (s, "%d", delta);
205  }
206 
207  vlib_cli_output (ctx->vm,
208  "%=19U%=7d%=7d %3d/%-3d%=9v%=7s%=7s%=5s%=30U",
210  key.fields.bd_index,
211  result.fields.sw_if_index == ~0
212  ? -1 : result.fields.sw_if_index,
213  result.fields.sn.bd, result.fields.sn.swif, s,
214  l2fib_entry_result_is_set_STATIC (&result) ? "*" : "-",
215  l2fib_entry_result_is_set_FILTER (&result) ? "*" : "-",
216  l2fib_entry_result_is_set_BVI (&result) ? "*" : "-",
218  ctx->vnm, result.fields.sw_if_index);
219  vec_free (s);
220  }
221 }
222 
223 /** Display the contents of the l2fib. */
224 static clib_error_t *
226  unformat_input_t * input, vlib_cli_command_t * cmd)
227 {
228  bd_main_t *bdm = &bd_main;
229  l2fib_main_t *msm = &l2fib_main;
230  u8 raw = 0;
231  u32 bd_id;
233  .first_entry = 1,
234  .bd_index = ~0,
235  .now = (u8) (vlib_time_now (vm) / 60),
236  .vm = vm,
237  .vnm = msm->vnet_main,
238  };
239 
241  {
242  if (unformat (input, "raw"))
243  {
244  raw = 1;
245  ctx.verbose = 0;
246  break;
247  }
248  else if (unformat (input, "verbose"))
249  ctx.verbose = 1;
250  else if (unformat (input, "all"))
251  ctx.verbose = 1;
252  else if (unformat (input, "bd_index %d", &ctx.bd_index))
253  ctx.verbose = 1;
254  else if (unformat (input, "learn"))
255  {
256  ctx.add = 0;
257  ctx.learn = 1;
258  ctx.verbose = 1;
259  }
260  else if (unformat (input, "add"))
261  {
262  ctx.learn = 0;
263  ctx.add = 1;
264  ctx.verbose = 1;
265  }
266  else if (unformat (input, "bd_id %d", &bd_id))
267  {
268  uword *p = hash_get (bdm->bd_index_by_bd_id, bd_id);
269  if (p)
270  {
271  ctx.verbose = 1;
272  ctx.bd_index = p[0];
273  }
274  else
275  return clib_error_return (0,
276  "bridge domain id %d doesn't exist\n",
277  bd_id);
278  }
279  else
280  break;
281  }
282 
284  (&msm->mac_table, l2fib_show_walk_cb, &ctx);
285 
286  if (ctx.total_entries == 0)
287  vlib_cli_output (vm, "no l2fib entries");
288  else
289  {
291  vlib_cli_output (vm, "L2FIB total/learned entries: %d/%d "
292  "Last scan time: %.4esec Learn limit: %d ",
295  if (lm->client_pid)
296  vlib_cli_output (vm, "L2MAC events client PID: %d "
297  "Last e-scan time: %.4esec Delay: %.2esec "
298  "Max macs in event: %d",
299  lm->client_pid, msm->evt_scan_duration,
301  }
302 
303  if (raw)
304  vlib_cli_output (vm, "Raw Hash Table:\n%U\n",
305  BV (format_bihash), &msm->mac_table, 1 /* verbose */ );
306 
307  return 0;
308 }
309 
310 /*?
311  * This command displays the MAC Address entries of the L2 FIB table.
312  * Output can be filtered to just get the number of MAC Addresses or display
313  * each MAC Address for all bridge domains or just a single bridge domain.
314  *
315  * @cliexpar
316  * Example of how to display the number of MAC Address entries in the L2
317  * FIB table:
318  * @cliexstart{show l2fib}
319  * 3 l2fib entries
320  * @cliexend
321  * Example of how to display all the MAC Address entries in the L2
322  * FIB table:
323  * @cliexstart{show l2fib all}
324  * Mac Address BD Idx Interface Index static filter bvi refresh timestamp
325  * 52:54:00:53:18:33 1 GigabitEthernet0/8/0.200 3 0 0 0 0 0
326  * 52:54:00:53:18:55 1 GigabitEthernet0/8/0.200 3 1 0 0 0 0
327  * 52:54:00:53:18:77 1 N/A -1 1 1 0 0 0
328  * 3 l2fib entries
329  * @cliexend
330 ?*/
331 /* *INDENT-OFF* */
332 VLIB_CLI_COMMAND (show_l2fib_cli, static) = {
333  .path = "show l2fib",
334  .short_help = "show l2fib [all] | [bd_id <nn> | bd_index <nn>] [learn | add] | [raw]",
335  .function = show_l2fib,
336 };
337 /* *INDENT-ON* */
338 
339 
340 /* Remove all entries from the l2fib */
341 void
343 {
344  l2fib_main_t *mp = &l2fib_main;
345 
346  /* Remove all entries */
347  BV (clib_bihash_free) (&mp->mac_table);
348  BV (clib_bihash_init) (&mp->mac_table, "l2fib mac table",
351 }
352 
353 /** Clear all entries in L2FIB.
354  * @TODO: Later we may want a way to remove only the non-static entries
355  */
356 static clib_error_t *
358  unformat_input_t * input, vlib_cli_command_t * cmd)
359 {
361  return 0;
362 }
363 
364 /*?
365  * This command clears all the MAC Address entries from the L2 FIB table.
366  *
367  * @cliexpar
368  * Example of how to clear the L2 FIB Table:
369  * @cliexcmd{clear l2fib}
370  * Example to show the L2 FIB Table has been cleared:
371  * @cliexstart{show l2fib verbose}
372  * no l2fib entries
373  * @cliexend
374 ?*/
375 /* *INDENT-OFF* */
376 VLIB_CLI_COMMAND (clear_l2fib_cli, static) = {
377  .path = "clear l2fib",
378  .short_help = "clear l2fib",
379  .function = clear_l2fib,
380 };
381 /* *INDENT-ON* */
382 
383 static inline l2fib_seq_num_t
385 {
386  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);
387  /* *INDENT-OFF* */
388  return (l2fib_seq_num_t) {
389  .swif = *l2fib_swif_seq_num (sw_if_index),
390  .bd = bd_config->seq_num,
391  };
392  /* *INDENT-ON* */
393 }
394 
395 /**
396  * Add an entry to the l2fib.
397  * If the entry already exists then overwrite it
398  */
399 void
402 {
403  l2fib_entry_key_t key;
404  l2fib_entry_result_t result;
405  __attribute__ ((unused)) u32 bucket_contents;
408  BVT (clib_bihash_kv) kv;
409 
410  /* set up key */
411  key.raw = l2fib_make_key (mac, bd_index);
412 
413  /* check if entry already exist */
414  if (BV (clib_bihash_search) (&fm->mac_table, &kv, &kv))
415  {
416  /* decrement counter if overwriting a learned mac */
417  result.raw = kv.value;
418  if ((!l2fib_entry_result_is_set_AGE_NOT (&result))
419  && (lm->global_learn_count))
420  lm->global_learn_count--;
421  }
422 
423  /* set up result */
424  result.raw = 0; /* clear all fields */
425  result.fields.sw_if_index = sw_if_index;
426  result.fields.flags = flags;
427 
428  /* no aging for provisioned entry */
429  l2fib_entry_result_set_AGE_NOT (&result);
430 
431  kv.key = key.raw;
432  kv.value = result.raw;
433 
434  BV (clib_bihash_add_del) (&fm->mac_table, &kv, 1 /* is_add */ );
435 }
436 
437 /**
438  * Add an entry to the L2FIB.
439  * The CLI format is:
440  * l2fib add <mac> <bd> <intf> [static] [bvi]
441  * l2fib add <mac> <bd> filter
442  * Note that filter and bvi entries are always static
443  */
444 static clib_error_t *
446  unformat_input_t * input, vlib_cli_command_t * cmd)
447 {
448  bd_main_t *bdm = &bd_main;
449  vnet_main_t *vnm = vnet_get_main ();
450  clib_error_t *error = 0;
451  u8 mac[6];
452  u32 bd_id;
453  u32 bd_index;
454  u32 sw_if_index = ~0;
455  uword *p;
457 
459 
460  if (!unformat (input, "%U", unformat_ethernet_address, mac))
461  {
462  error = clib_error_return (0, "expected mac address `%U'",
463  format_unformat_error, input);
464  goto done;
465  }
466 
467  if (!unformat (input, "%d", &bd_id))
468  {
469  error = clib_error_return (0, "expected bridge domain ID `%U'",
470  format_unformat_error, input);
471  goto done;
472  }
473 
474  p = hash_get (bdm->bd_index_by_bd_id, bd_id);
475  if (!p)
476  {
477  error = clib_error_return (0, "bridge domain ID %d invalid", bd_id);
478  goto done;
479  }
480  bd_index = p[0];
481 
482  if (unformat (input, "filter"))
483  {
484  l2fib_add_filter_entry (mac, bd_index);
485  return 0;
486  }
487 
488  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
489  {
490  error = clib_error_return (0, "unknown interface `%U'",
491  format_unformat_error, input);
492  goto done;
493  }
494 
495  if (unformat (input, "static"))
496  flags |= L2FIB_ENTRY_RESULT_FLAG_STATIC;
497  else if (unformat (input, "bvi"))
498  flags |= (L2FIB_ENTRY_RESULT_FLAG_STATIC | L2FIB_ENTRY_RESULT_FLAG_BVI);
499 
501  {
502  error = clib_error_return (0, "Interface sw_if_index %d not in L2 mode",
503  sw_if_index);
504  goto done;
505  }
506 
507  l2fib_add_entry (mac, bd_index, sw_if_index, flags);
508 
509 done:
510  return error;
511 }
512 
513 /*?
514  * This command adds a MAC Address entry to the L2 FIB table
515  * of an existing bridge-domain. The MAC Address can be static
516  * or dynamic. This command also allows a filter to be added,
517  * such that packets with given MAC Addresses (source mac or
518  * destination mac match) are dropped.
519  *
520  * @cliexpar
521  * Example of how to add a dynamic MAC Address entry to the L2 FIB table
522  * of a bridge-domain (where 200 is the bridge-domain-id):
523  * @cliexcmd{l2fib add 52:54:00:53:18:33 200 GigabitEthernet0/8/0.200}
524  * Example of how to add a static MAC Address entry to the L2 FIB table
525  * of a bridge-domain (where 200 is the bridge-domain-id):
526  * @cliexcmd{l2fib add 52:54:00:53:18:55 200 GigabitEthernet0/8/0.200 static}
527  * Example of how to add a filter such that a packet with the given MAC
528  * Address will be dropped in a given bridge-domain (where 200 is the
529  * bridge-domain-id):
530  * @cliexcmd{l2fib add 52:54:00:53:18:77 200 filter}
531  * Example of show command of the provisioned MAC Addresses and filters:
532  * @cliexstart{show l2fib verbose}
533  * Mac Address BD Idx Interface Index static filter bvi refresh timestamp
534  * 52:54:00:53:18:33 1 GigabitEthernet0/8/0.200 3 0 0 0 0 0
535  * 52:54:00:53:18:55 1 GigabitEthernet0/8/0.200 3 1 0 0 0 0
536  * 52:54:00:53:18:77 1 N/A -1 1 1 0 0 0
537  * 3 l2fib entries
538  * @cliexend
539 ?*/
540 /* *INDENT-OFF* */
541 VLIB_CLI_COMMAND (l2fib_add_cli, static) = {
542  .path = "l2fib add",
543  .short_help = "l2fib add <mac> <bridge-domain-id> filter | <intf> [static | bvi]",
544  .function = l2fib_add,
545 };
546 /* *INDENT-ON* */
547 
548 
549 static clib_error_t *
551  unformat_input_t * input, vlib_cli_command_t * cmd)
552 {
553  clib_error_t *error = 0;
554  u8 mac[6], save_mac[6];
555  u32 bd_index = 0;
556  u32 sw_if_index = 8;
557  u32 is_add = 0;
558  u32 is_del = 0;
559  u32 is_check = 0;
560  u32 count = 1;
561  int mac_set = 0;
562  int i;
563 
565  {
566  if (unformat (input, "mac %U", unformat_ethernet_address, mac))
567  mac_set = 1;
568  else if (unformat (input, "add"))
569  is_add = 1;
570  else if (unformat (input, "del"))
571  is_del = 1;
572  else if (unformat (input, "check"))
573  is_check = 1;
574  else if (unformat (input, "count %d", &count))
575  ;
576  else
577  break;
578  }
579 
580  if (mac_set == 0)
581  return clib_error_return (0, "mac not set");
582 
583  if (is_add == 0 && is_del == 0 && is_check == 0)
584  return clib_error_return (0,
585  "noop: pick at least one of (add,del,check)");
586 
587  clib_memcpy_fast (save_mac, mac, 6);
588 
589  if (is_add)
590  {
591  for (i = 0; i < count; i++)
592  {
593  l2fib_add_entry (mac, bd_index, sw_if_index,
595  incr_mac_address (mac);
596  }
597  }
598 
599  if (is_check)
600  {
601  BVT (clib_bihash_kv) kv;
602  l2fib_main_t *mp = &l2fib_main;
603 
604  clib_memcpy_fast (mac, save_mac, 6);
605 
606  for (i = 0; i < count; i++)
607  {
608  kv.key = l2fib_make_key (mac, bd_index);
609  if (BV (clib_bihash_search) (&mp->mac_table, &kv, &kv))
610  {
611  clib_warning ("key %U AWOL", format_ethernet_address, mac);
612  break;
613  }
614  incr_mac_address (mac);
615  }
616  }
617 
618  if (is_del)
619  {
620  clib_memcpy_fast (mac, save_mac, 6);
621 
622  for (i = 0; i < count; i++)
623  {
624  l2fib_del_entry (mac, bd_index, 0);
625  incr_mac_address (mac);
626  }
627  }
628 
629  return error;
630 }
631 
632 /*?
633  * The set of '<em>test l2fib</em>' commands allow the L2 FIB table of the default
634  * bridge domain (bridge-domain-id of 0) to be modified.
635  *
636  * @cliexpar
637  * @parblock
638  * Example of how to add a set of 4 sequential MAC Address entries to L2
639  * FIB table of the default bridge-domain:
640  * @cliexcmd{test l2fib add mac 52:54:00:53:00:00 count 4}
641  *
642  * Show the set of 4 sequential MAC Address entries that were added:
643  * @cliexstart{show l2fib verbose}
644  * Mac Address BD Idx Interface Index static filter bvi refresh timestamp
645  * 52:54:00:53:00:00 0 GigabitEthernet0/8/0.300 8 0 0 0 0 0
646  * 52:54:00:53:00:01 0 GigabitEthernet0/8/0.300 8 0 0 0 0 0
647  * 52:54:00:53:00:03 0 GigabitEthernet0/8/0.300 8 0 0 0 0 0
648  * 52:54:00:53:00:02 0 GigabitEthernet0/8/0.300 8 0 0 0 0 0
649  * 4 l2fib entries
650  * @cliexend
651  *
652  * Example of how to check that the set of 4 sequential MAC Address
653  * entries were added to L2 FIB table of the default
654  * bridge-domain. Used a count of 5 to produce an error:
655  *
656  * @cliexcmd{test l2fib check mac 52:54:00:53:00:00 count 5}
657  * The output of the check command is in the log files. Log file
658  * location may vary based on your OS and Version:
659  *
660  * <b><em># tail -f /var/log/messages | grep l2fib_test_command_fn</em></b>
661  *
662  * Sep 7 17:15:24 localhost vnet[4952]: l2fib_test_command_fn:446: key 52:54:00:53:00:04 AWOL
663  *
664  * Example of how to delete a set of 4 sequential MAC Address entries
665  * from L2 FIB table of the default bridge-domain:
666  * @cliexcmd{test l2fib del mac 52:54:00:53:00:00 count 4}
667  * @endparblock
668 ?*/
669 /* *INDENT-OFF* */
670 VLIB_CLI_COMMAND (l2fib_test_command, static) = {
671  .path = "test l2fib",
672  .short_help = "test l2fib [add|del|check] mac <base-addr> count <nn>",
673  .function = l2fib_test_command_fn,
674 };
675 /* *INDENT-ON* */
676 
677 
678 /**
679  * Delete an entry from the l2fib.
680  * Return 0 if the entry was deleted, or 1 it was not found or if
681  * sw_if_index is non-zero and does not match that in the entry.
682  */
683 u32
685 {
686  l2fib_entry_result_t result;
687  l2fib_main_t *mp = &l2fib_main;
688  BVT (clib_bihash_kv) kv;
689 
690  /* set up key */
691  kv.key = l2fib_make_key (mac, bd_index);
692 
693  if (BV (clib_bihash_search) (&mp->mac_table, &kv, &kv))
694  return 1;
695 
696  result.raw = kv.value;
697 
698  /* check if sw_if_index of entry match */
699  if ((sw_if_index != 0) && (sw_if_index != result.fields.sw_if_index))
700  return 1;
701 
702  /* decrement counter if dynamically learned mac */
703  if ((!l2fib_entry_result_is_set_AGE_NOT (&result)) &&
706 
707  /* Remove entry from hash table */
708  BV (clib_bihash_add_del) (&mp->mac_table, &kv, 0 /* is_add */ );
709  return 0;
710 }
711 
712 /**
713  * Delete an entry from the L2FIB.
714  * The CLI format is:
715  * l2fib del <mac> <bd-id>
716  */
717 static clib_error_t *
719  unformat_input_t * input, vlib_cli_command_t * cmd)
720 {
721  bd_main_t *bdm = &bd_main;
722  clib_error_t *error = 0;
723  u8 mac[6];
724  u32 bd_id;
725  u32 bd_index;
726  uword *p;
727 
728  if (!unformat (input, "%U", unformat_ethernet_address, mac))
729  {
730  error = clib_error_return (0, "expected mac address `%U'",
731  format_unformat_error, input);
732  goto done;
733  }
734 
735  if (!unformat (input, "%d", &bd_id))
736  {
737  error = clib_error_return (0, "expected bridge domain ID `%U'",
738  format_unformat_error, input);
739  goto done;
740  }
741 
742  p = hash_get (bdm->bd_index_by_bd_id, bd_id);
743  if (!p)
744  {
745  error = clib_error_return (0, "bridge domain ID %d invalid", bd_id);
746  goto done;
747  }
748  bd_index = p[0];
749 
750  /* Delete the entry */
751  if (l2fib_del_entry (mac, bd_index, 0))
752  {
753  error = clib_error_return (0, "mac entry not found");
754  goto done;
755  }
756 
757 done:
758  return error;
759 }
760 
761 /*?
762  * This command deletes an existing MAC Address entry from the L2 FIB
763  * table of an existing bridge-domain.
764  *
765  * @cliexpar
766  * Example of how to delete a MAC Address entry from the L2 FIB table of a bridge-domain (where 200 is the bridge-domain-id):
767  * @cliexcmd{l2fib del 52:54:00:53:18:33 200}
768 ?*/
769 /* *INDENT-OFF* */
770 VLIB_CLI_COMMAND (l2fib_del_cli, static) = {
771  .path = "l2fib del",
772  .short_help = "l2fib del <mac> <bridge-domain-id> []",
773  .function = l2fib_del,
774 };
775 /* *INDENT-ON* */
776 
777 /**
778  Kick off ager to scan MACs to age/delete MAC entries
779 */
780 void
782 {
784 
785  /* check if there is at least one bd with mac aging enabled */
786  l2_bridge_domain_t *bd_config;
787  vec_foreach (bd_config, l2input_main.bd_configs)
788  {
789  if (bd_config->bd_id != ~0 && bd_config->mac_age != 0)
790  {
792  break;
793  }
794  }
795 
796  vlib_process_signal_event (vm, l2fib_mac_age_scanner_process_node.index,
797  evt, 0);
798 }
799 
800 /**
801  Flush all non static MACs from an interface
802 */
803 void
805 {
806  *l2fib_swif_seq_num (sw_if_index) += 1;
808 }
809 
810 /**
811  Flush all non static MACs in a bridge domain
812 */
813 void
815 {
816  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);
817  bd_config->seq_num += 1;
819 }
820 
821 /**
822  Flush all non static MACs - flushes all valid BDs
823 */
824 void
826 {
827  l2_bridge_domain_t *bd_config;
828  vec_foreach (bd_config, l2input_main.bd_configs)
829  if (bd_is_valid (bd_config))
830  bd_config->seq_num += 1;
831 
833 }
834 
835 
836 /**
837  Flush MACs, except static ones, associated with an interface
838  The CLI format is:
839  l2fib flush-mac interface <if-name>
840 */
841 static clib_error_t *
843  unformat_input_t * input, vlib_cli_command_t * cmd)
844 {
845  vnet_main_t *vnm = vnet_get_main ();
846  clib_error_t *error = 0;
848 
849  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
850  {
851  error = clib_error_return (0, "unknown interface `%U'",
852  format_unformat_error, input);
853  goto done;
854  }
855 
856  l2fib_flush_int_mac (vm, sw_if_index);
857 
858 done:
859  return error;
860 }
861 
862 /**
863  Flush all MACs, except static ones
864  The CLI format is:
865  l2fib flush-mac all
866 */
867 static clib_error_t *
869  unformat_input_t * input, vlib_cli_command_t * cmd)
870 {
871  l2fib_flush_all_mac (vm);
872  return 0;
873 }
874 
875 /*?
876  * This command kick off ager to delete all existing MAC Address entries,
877  * except static ones, associated with an interface from the L2 FIB table.
878  *
879  * @cliexpar
880  * Example of how to flush MAC Address entries learned on an interface from the L2 FIB table:
881  * @cliexcmd{l2fib flush-mac interface GigabitEthernet2/1/0}
882 ?*/
883 /* *INDENT-OFF* */
884 VLIB_CLI_COMMAND (l2fib_flush_mac_all_cli, static) = {
885  .path = "l2fib flush-mac all",
886  .short_help = "l2fib flush-mac all",
887  .function = l2fib_flush_mac_all,
888 };
889 /* *INDENT-ON* */
890 
891 /*?
892  * This command kick off ager to delete all existing MAC Address entries,
893  * except static ones, associated with an interface from the L2 FIB table.
894  *
895  * @cliexpar
896  * Example of how to flush MAC Address entries learned on an interface from the L2 FIB table:
897  * @cliexcmd{l2fib flush-mac interface GigabitEthernet2/1/0}
898 ?*/
899 /* *INDENT-OFF* */
900 VLIB_CLI_COMMAND (l2fib_flush_mac_int_cli, static) = {
901  .path = "l2fib flush-mac interface",
902  .short_help = "l2fib flush-mac interface <if-name>",
903  .function = l2fib_flush_mac_int,
904 };
905 /* *INDENT-ON* */
906 
907 /**
908  Flush bridge-domain MACs except static ones.
909  The CLI format is:
910  l2fib flush-mac bridge-domain <bd-id>
911 */
912 static clib_error_t *
914  unformat_input_t * input, vlib_cli_command_t * cmd)
915 {
916  bd_main_t *bdm = &bd_main;
917  clib_error_t *error = 0;
918  u32 bd_index, bd_id;
919  uword *p;
920 
921  if (!unformat (input, "%d", &bd_id))
922  {
923  error = clib_error_return (0, "expecting bridge-domain id but got `%U'",
924  format_unformat_error, input);
925  goto done;
926  }
927 
928  p = hash_get (bdm->bd_index_by_bd_id, bd_id);
929  if (p)
930  bd_index = *p;
931  else
932  return clib_error_return (0, "No such bridge domain %d", bd_id);
933 
934  l2fib_flush_bd_mac (vm, bd_index);
935 
936 done:
937  return error;
938 }
939 
940 /*?
941  * This command kick off ager to delete all existing MAC Address entries,
942  * except static ones, in a bridge domain from the L2 FIB table.
943  *
944  * @cliexpar
945  * Example of how to flush MAC Address entries learned in a bridge domain from the L2 FIB table:
946  * @cliexcmd{l2fib flush-mac bridge-domain 1000}
947 ?*/
948 /* *INDENT-OFF* */
949 VLIB_CLI_COMMAND (l2fib_flush_mac_bd_cli, static) = {
950  .path = "l2fib flush-mac bridge-domain",
951  .short_help = "l2fib flush-mac bridge-domain <bd-id>",
952  .function = l2fib_flush_mac_bd,
953 };
954 /* *INDENT-ON* */
955 
956 clib_error_t *
958 {
959  l2_input_config_t *config = l2input_intf_config (sw_if_index);
960  if ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) == 0 && config->bridge)
961  l2fib_flush_int_mac (vnm->vlib_main, sw_if_index);
962  return 0;
963 }
964 
966 
967 BVT (clib_bihash) * get_mac_table (void)
968 {
969  l2fib_main_t *mp = &l2fib_main;
970  return &mp->mac_table;
971 }
972 
974 allocate_mac_evt_buf (u32 client, u32 client_index)
975 {
978  (sizeof (*mp) + (fm->max_macs_in_event * sizeof (vl_api_mac_entry_t)));
979  mp->_vl_msg_id = htons (VL_API_L2_MACS_EVENT);
980  mp->pid = htonl (client);
981  mp->client_index = client_index;
982  return mp;
983 }
984 
986 l2fib_scan (vlib_main_t * vm, f64 start_time, u8 event_only)
987 {
990 
991  BVT (clib_bihash) * h = &fm->mac_table;
992  int i, j, k;
993  f64 last_start = start_time;
994  f64 accum_t = 0;
995  f64 delta_t = 0;
996  u32 evt_idx = 0;
997  u32 learn_count = 0;
998  u32 client = lm->client_pid;
999  u32 cl_idx = lm->client_index;
1000  vl_api_l2_macs_event_t *mp = 0;
1001  vl_api_registration_t *reg = 0;
1002 
1003  if (client)
1004  {
1005  mp = allocate_mac_evt_buf (client, cl_idx);
1007  }
1008 
1009  for (i = 0; i < h->nbuckets; i++)
1010  {
1011  /* allow no more than 20us without a pause */
1012  delta_t = vlib_time_now (vm) - last_start;
1013  if (delta_t > 20e-6)
1014  {
1015  vlib_process_suspend (vm, 100e-6); /* suspend for 100 us */
1016  last_start = vlib_time_now (vm);
1017  accum_t += delta_t;
1018  }
1019 
1020  if (i < (h->nbuckets - 3))
1021  {
1022  BVT (clib_bihash_bucket) * b = &h->buckets[i + 3];
1024  b = &h->buckets[i + 1];
1025  if (b->offset)
1026  {
1027  BVT (clib_bihash_value) * v =
1028  BV (clib_bihash_get_value) (h, b->offset);
1030  }
1031  }
1032 
1033  BVT (clib_bihash_bucket) * b = &h->buckets[i];
1034  if (b->offset == 0)
1035  continue;
1036  BVT (clib_bihash_value) * v = BV (clib_bihash_get_value) (h, b->offset);
1037  for (j = 0; j < (1 << b->log2_pages); j++)
1038  {
1039  for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
1040  {
1041  if (v->kvp[k].key == ~0ULL && v->kvp[k].value == ~0ULL)
1042  continue;
1043 
1044  l2fib_entry_key_t key = {.raw = v->kvp[k].key };
1045  l2fib_entry_result_t result = {.raw = v->kvp[k].value };
1046 
1047  if (!l2fib_entry_result_is_set_AGE_NOT (&result))
1048  learn_count++;
1049 
1050  if (client)
1051  {
1052  if (PREDICT_FALSE (evt_idx >= fm->max_macs_in_event))
1053  {
1054  /* event message full, send it and start a new one */
1055  if (reg && vl_api_can_send_msg (reg))
1056  {
1057  mp->n_macs = htonl (evt_idx);
1058  vl_api_send_msg (reg, (u8 *) mp);
1059  mp = allocate_mac_evt_buf (client, cl_idx);
1060  }
1061  else
1062  {
1063  if (reg)
1064  clib_warning ("MAC event to pid %d queue stuffed!"
1065  " %d MAC entries lost", client,
1066  evt_idx);
1067  }
1068  evt_idx = 0;
1069  }
1070 
1071  if (l2fib_entry_result_is_set_LRN_EVT (&result))
1072  {
1073  /* copy mac entry to event msg */
1074  clib_memcpy_fast (mp->mac[evt_idx].mac_addr,
1075  key.fields.mac, 6);
1076  mp->mac[evt_idx].action =
1077  l2fib_entry_result_is_set_LRN_MOV (&result) ?
1079  mp->mac[evt_idx].sw_if_index =
1080  htonl (result.fields.sw_if_index);
1081  /* clear event bits and update mac entry */
1082  l2fib_entry_result_clear_LRN_EVT (&result);
1083  l2fib_entry_result_clear_LRN_MOV (&result);
1084  BVT (clib_bihash_kv) kv;
1085  kv.key = key.raw;
1086  kv.value = result.raw;
1087  BV (clib_bihash_add_del) (&fm->mac_table, &kv, 1);
1088  evt_idx++;
1089  continue; /* skip aging */
1090  }
1091  }
1092 
1093  if (event_only || l2fib_entry_result_is_set_AGE_NOT (&result))
1094  continue; /* skip aging - static_mac always age_not */
1095 
1096  /* start aging processing */
1097  u32 bd_index = key.fields.bd_index;
1098  u32 sw_if_index = result.fields.sw_if_index;
1099  u16 sn = l2fib_cur_seq_num (bd_index, sw_if_index).as_u16;
1100  if (result.fields.sn.as_u16 != sn)
1101  goto age_out; /* stale mac */
1102 
1103  l2_bridge_domain_t *bd_config =
1105 
1106  if (bd_config->mac_age == 0)
1107  continue; /* skip aging */
1108 
1109  i16 delta = (u8) (start_time / 60) - result.fields.timestamp;
1110  delta += delta < 0 ? 256 : 0;
1111 
1112  if (delta < bd_config->mac_age)
1113  continue; /* still valid */
1114 
1115  age_out:
1116  if (client)
1117  {
1118  /* copy mac entry to event msg */
1119  clib_memcpy_fast (mp->mac[evt_idx].mac_addr, key.fields.mac,
1120  6);
1121  mp->mac[evt_idx].action = MAC_EVENT_ACTION_DELETE;
1122  mp->mac[evt_idx].sw_if_index =
1123  htonl (result.fields.sw_if_index);
1124  evt_idx++;
1125  }
1126  /* delete mac entry */
1127  BVT (clib_bihash_kv) kv;
1128  kv.key = key.raw;
1129  BV (clib_bihash_add_del) (&fm->mac_table, &kv, 0);
1130  learn_count--;
1131  /*
1132  * Note: we may have just freed the bucket's backing
1133  * storage, so check right here...
1134  */
1135  if (b->offset == 0)
1136  goto doublebreak;
1137  }
1138  v++;
1139  }
1140  doublebreak:
1141  ;
1142  }
1143 
1144  /* keep learn count consistent */
1145  l2learn_main.global_learn_count = learn_count;
1146 
1147  if (mp)
1148  {
1149  /* send any outstanding mac event message else free message buffer */
1150  if (evt_idx)
1151  {
1152  if (reg && vl_api_can_send_msg (reg))
1153  {
1154  mp->n_macs = htonl (evt_idx);
1155  vl_api_send_msg (reg, (u8 *) mp);
1156  }
1157  else
1158  {
1159  if (reg)
1160  clib_warning ("MAC event to pid %d queue stuffed!"
1161  " %d MAC entries lost", client, evt_idx);
1162  vl_msg_api_free (mp);
1163  }
1164  }
1165  else
1166  vl_msg_api_free (mp);
1167  }
1168  return delta_t + accum_t;
1169 }
1170 
1171 static uword
1173  vlib_frame_t * f)
1174 {
1175  uword event_type, *event_data = 0;
1178  bool enabled = 0;
1179  f64 start_time, next_age_scan_time = CLIB_TIME_MAX;
1180 
1181  while (1)
1182  {
1183  if (lm->client_pid)
1185  else if (enabled)
1186  {
1187  f64 t = next_age_scan_time - vlib_time_now (vm);
1189  }
1190  else
1192 
1193  event_type = vlib_process_get_events (vm, &event_data);
1194  vec_reset_length (event_data);
1195 
1196  start_time = vlib_time_now (vm);
1197  enum
1198  { SCAN_MAC_AGE, SCAN_MAC_EVENT, SCAN_DISABLE } scan = SCAN_MAC_AGE;
1199 
1200  switch (event_type)
1201  {
1202  case ~0: /* timer expired */
1203  if (lm->client_pid != 0 && start_time < next_age_scan_time)
1204  scan = SCAN_MAC_EVENT;
1205  break;
1206 
1208  enabled = 1;
1209  break;
1210 
1212  enabled = 0;
1213  scan = SCAN_DISABLE;
1214  break;
1215 
1217  break;
1218 
1219  default:
1220  ASSERT (0);
1221  }
1222 
1223  if (scan == SCAN_MAC_EVENT)
1224  l2fib_main.evt_scan_duration = l2fib_scan (vm, start_time, 1);
1225  else
1226  {
1227  if (scan == SCAN_MAC_AGE)
1228  l2fib_main.age_scan_duration = l2fib_scan (vm, start_time, 0);
1229  if (scan == SCAN_DISABLE)
1230  {
1231  l2fib_main.age_scan_duration = 0;
1232  l2fib_main.evt_scan_duration = 0;
1233  }
1234  /* schedule next scan */
1235  if (enabled)
1236  next_age_scan_time = start_time + L2FIB_AGE_SCAN_INTERVAL;
1237  else
1238  next_age_scan_time = CLIB_TIME_MAX;
1239  }
1240  }
1241  return 0;
1242 }
1243 
1244 /* *INDENT-OFF* */
1245 VLIB_REGISTER_NODE (l2fib_mac_age_scanner_process_node) = {
1246  .function = l2fib_mac_age_scanner_process,
1247  .type = VLIB_NODE_TYPE_PROCESS,
1248  .name = "l2fib-mac-age-scanner-process",
1249 };
1250 /* *INDENT-ON* */
1251 
1252 clib_error_t *
1254 {
1255  l2fib_main_t *mp = &l2fib_main;
1256  l2fib_entry_key_t test_key;
1257  u8 test_mac[6];
1258 
1259  mp->vlib_main = vm;
1260  mp->vnet_main = vnet_get_main ();
1261 
1262  /* Create the hash table */
1263  BV (clib_bihash_init) (&mp->mac_table, "l2fib mac table",
1265 
1266  /* verify the key constructor is good, since it is endian-sensitive */
1267  clib_memset (test_mac, 0, sizeof (test_mac));
1268  test_mac[0] = 0x11;
1269  test_key.raw = 0;
1270  test_key.raw = l2fib_make_key ((u8 *) & test_mac, 0x1234);
1271  ASSERT (test_key.fields.mac[0] == 0x11);
1272  ASSERT (test_key.fields.bd_index == 0x1234);
1273 
1274  return 0;
1275 }
1276 
1278 
1279 /*
1280  * fd.io coding-style-patch-verification: ON
1281  *
1282  * Local Variables:
1283  * eval: (c-set-style "gnu")
1284  * End:
1285  */
static_always_inline void * allocate_mac_evt_buf(u32 client, u32 client_index)
Definition: l2_fib.c:974
f64 evt_scan_duration
Definition: l2_fib.h:52
static clib_error_t * l2fib_test_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: l2_fib.c:550
u32 global_learn_count
Definition: l2_learn.h:32
l2_input_config_t * configs
Definition: l2_input.h:61
u32 flags
Definition: vhost_user.h:115
u8 * format_vnet_sw_if_index_name_with_NA(u8 *s, va_list *args)
Format sw_if_index.
Definition: l2_fib.c:91
vlib_main_t * vlib_main
Definition: l2_fib.h:62
vnet_main_t * vnm
Definition: l2_fib.c:152
static f64 vlib_process_wait_for_event_or_clock(vlib_main_t *vm, f64 dt)
Suspend a cooperative multi-tasking thread Waits for an event, or for the indicated number of seconds...
Definition: node_funcs.h:673
#define BIHASH_KVP_PER_PAGE
Definition: bihash_16_8.h:19
static uword * vlib_process_wait_for_event(vlib_main_t *vm)
Definition: node_funcs.h:593
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
vnet_main_t * vnet_main
Definition: l2_fib.h:63
void clib_bihash_free(clib_bihash *h)
Destroy a bounded index extensible hash table.
unsigned long u64
Definition: types.h:89
u64 raw
Definition: l2_fib.h:149
l2_input_config_t * l2input_intf_config(u32 sw_if_index)
Get a pointer to the config for the given interface.
Definition: l2_input.c:520
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
#define NULL
Definition: clib.h:58
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:232
static void vl_api_send_msg(vl_api_registration_t *rp, u8 *elem)
Definition: api.h:34
clib_error_t * l2fib_init(vlib_main_t *vm)
Definition: l2_fib.c:1253
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:525
int i
static_always_inline u8 * l2fib_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:457
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
#define L2FIB_MEMORY_SIZE
Definition: l2_fib.h:28
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
unformat_function_t unformat_vnet_sw_interface
u32 max_macs_in_event
Definition: l2_fib.h:59
enum l2fib_entry_result_flags_t_ l2fib_entry_result_flags_t
vlib_main_t * vm
Definition: l2_fib.c:151
void * vl_msg_api_alloc(int nbytes)
static clib_error_t * l2fib_del(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Delete an entry from the L2FIB.
Definition: l2_fib.c:718
unsigned char u8
Definition: types.h:56
u8 * format_l2fib_entry_result_flags(u8 *s, va_list *args)
Definition: l2_fib.c:58
u8 action
Definition: l2.api:172
u32 client_index
Definition: l2_learn.h:39
Entry for learned or aged MAC in L2 MAC Events.
Definition: l2.api:168
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
double f64
Definition: types.h:142
#define fm
Definition: l2_fib.h:137
static uword vlib_process_suspend(vlib_main_t *vm, f64 dt)
Suspend a vlib cooperative multi-tasking thread for a period of time.
Definition: node_funcs.h:422
static int vl_api_can_send_msg(vl_api_registration_t *rp)
Definition: api.h:47
#define L2FIB_AGE_SCAN_INTERVAL
Definition: l2_fib.h:31
l2learn_main_t l2learn_main
Definition: l2_learn.c:33
#define static_always_inline
Definition: clib.h:99
u8 * format_ethernet_address(u8 *s, va_list *args)
Definition: format.c:44
int clib_bihash_add_del(clib_bihash *h, clib_bihash_kv *add_v, int is_add)
Add or delete a (key,value) pair from a bi-hash table.
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
static uword vlib_process_get_events(vlib_main_t *vm, uword **data_vector)
Return the first event type which has occurred and a vector of per-event data of that type...
Definition: node_funcs.h:516
u32 sw_if_index
Definition: vxlan_gbp.api:37
struct l2fib_entry_result_t_::@243::@245 fields
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
#define clib_error_return(e, args...)
Definition: error.h:99
void l2fib_add_entry(const u8 *mac, u32 bd_index, u32 sw_if_index, l2fib_entry_result_flags_t flags)
Add an entry to the l2fib.
Definition: l2_fib.c:400
unsigned int u32
Definition: types.h:88
L2 MAC event for a list of learned or aged MACs.
Definition: l2.api:182
uword * bd_index_by_bd_id
Definition: l2_bd.h:36
u32 sw_if_index
Definition: l2.api:170
void l2fib_start_ager_scan(vlib_main_t *vm)
Kick off ager to scan MACs to age/delete MAC entries.
Definition: l2_fib.c:781
#define hash_get(h, key)
Definition: hash.h:249
f64 event_scan_delay
Definition: l2_fib.h:56
format_function_t format_vnet_sw_interface_name
struct l2fib_dump_walk_ctx_t_ l2fib_dump_walk_ctx_t
vlib_main_t * vlib_main
Definition: vnet.h:80
static void vlib_process_signal_event(vlib_main_t *vm, uword node_index, uword type_opaque, uword data)
Definition: node_funcs.h:934
static void l2fib_show_walk_cb(BVT(clib_bihash_kv) *kvp, void *arg)
Definition: l2_fib.c:161
long ctx[MAX_CONNS]
Definition: main.c:144
u32 bd_id
Definition: gbp.api:260
struct _unformat_input_t unformat_input_t
unsigned short u16
Definition: types.h:57
void l2fib_flush_bd_mac(vlib_main_t *vm, u32 bd_index)
Flush all non static MACs in a bridge domain.
Definition: l2_fib.c:814
#define PREDICT_FALSE(x)
Definition: clib.h:111
void l2fib_flush_all_mac(vlib_main_t *vm)
Flush all non static MACs - flushes all valid BDs.
Definition: l2_fib.c:825
l2fib_entry_key_t * l2fe_key
Definition: l2_fib.c:109
#define L2FIB_NUM_BUCKETS
Definition: l2_fib.h:27
static_always_inline f64 l2fib_scan(vlib_main_t *vm, f64 start_time, u8 event_only)
Definition: l2_fib.c:986
void clib_bihash_init(clib_bihash *h, char *name, u32 nbuckets, uword memory_size)
initialize a bounded index extensible hash table
l2fib_main_t l2fib_main
Definition: l2_fib.c:55
static u32 bd_is_valid(l2_bridge_domain_t *bd_config)
Definition: l2_bd.h:133
static clib_error_t * clear_l2fib(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Clear all entries in L2FIB.
Definition: l2_fib.c:357
BVT(clib_bihash)
Definition: l2_fib.c:967
clib_error_t * l2fib_sw_interface_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: l2_fib.c:957
static clib_error_t * show_l2fib(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Display the contents of the l2fib.
Definition: l2_fib.c:225
An API client registration, only in vpp/vlib.
Definition: api_common.h:45
void clib_bihash_foreach_key_value_pair(clib_bihash *h, void *callback, void *arg)
Visit active (key,value) pairs in a bi-hash table.
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
static clib_error_t * l2fib_flush_mac_all(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Flush all MACs, except static ones The CLI format is: l2fib flush-mac all.
Definition: l2_fib.c:868
u32 l2fib_del_entry(const u8 *mac, u32 bd_index, u32 sw_if_index)
Delete an entry from the l2fib.
Definition: l2_fib.c:684
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:79
vlib_main_t * vm
Definition: buffer.c:301
static void incr_mac_address(u8 *mac)
Definition: l2_fib.c:79
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
static clib_error_t * l2fib_flush_mac_int(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Flush MACs, except static ones, associated with an interface The CLI format is: l2fib flush-mac inter...
Definition: l2_fib.c:842
#define clib_warning(format, args...)
Definition: error.h:59
f64 age_scan_duration
Definition: l2_fib.h:53
static vnet_sw_interface_t * vnet_get_sw_interface_safe(vnet_main_t *vnm, u32 sw_if_index)
static u64 l2fib_make_key(const u8 *mac_address, u16 bd_index)
make address sanitizer skip this: The 6-Bytes mac-address is cast into an 8-Bytes u64...
Definition: l2_fib.h:223
void l2fib_clear_table(void)
Definition: l2_fib.c:342
static l2fib_seq_num_t l2fib_cur_seq_num(u32 bd_index, u32 sw_if_index)
Definition: l2_fib.c:384
static_always_inline l2_bridge_domain_t * l2input_bd_config(u32 bd_index)
Definition: l2_input.h:85
static vl_api_registration_t * vl_api_client_index_to_registration(u32 index)
Definition: api.h:56
u8 mac_addr[6]
Definition: l2.api:171
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
struct l2fib_entry_key_t::@235::@237 fields
static void l2fib_dump_walk_cb(BVT(clib_bihash_kv) *kvp, void *arg)
Definition: l2_fib.c:114
uword unformat_ethernet_address(unformat_input_t *input, va_list *args)
Definition: format.c:233
#define ASSERT(truth)
#define CLIB_TIME_MAX
Definition: time.h:212
Definition: l2_fib.h:71
static uword l2fib_mac_age_scanner_process(vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f)
Definition: l2_fib.c:1172
vl_api_mac_entry_t mac[n_macs]
Definition: l2.api:187
size_t count
Definition: vapi.c:47
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(l2fib_sw_interface_up_down)
u32 global_learn_limit
Definition: l2_learn.h:35
void vl_msg_api_free(void *)
template key/value backing page structure
Definition: bihash_doc.h:44
static clib_error_t * l2fib_flush_mac_bd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Flush bridge-domain MACs except static ones.
Definition: l2_fib.c:913
l2input_main_t l2input_main
Definition: l2_input.c:122
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
u64 uword
Definition: types.h:112
l2fib_entry_result_t * l2fe_res
Definition: l2_fib.c:110
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:64
static void l2fib_add_filter_entry(const u8 *mac, u32 bd_index)
Definition: l2_fib.h:433
void l2fib_table_dump(u32 bd_index, l2fib_entry_key_t **l2fe_key, l2fib_entry_result_t **l2fe_res)
Definition: l2_fib.c:131
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
#define vec_foreach(var, vec)
Vector iterator.
static void * clib_bihash_get_value(clib_bihash *h, uword offset)
Get pointer to value page given its clib mheap offset.
bd_main_t bd_main
Definition: l2_bd.c:44
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
static clib_error_t * l2fib_add(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Add an entry to the L2FIB.
Definition: l2_fib.c:445
u32 client_pid
Definition: l2_learn.h:38
vl_api_mac_address_t mac
Definition: gbp.api:118
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:762
void l2fib_flush_int_mac(vlib_main_t *vm, u32 sw_if_index)
Flush all non static MACs from an interface.
Definition: l2_fib.c:804
struct l2fib_show_walk_ctx_t_ l2fib_show_walk_ctx_t
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
u64 raw
Definition: l2_fib.h:85
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
signed short i16
Definition: types.h:46