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Vector Packet Processing
interface.c
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1 /*
2  * Copyright (c) 2015 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:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
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.
14  */
15 /*
16  * ethernet_interface.c: ethernet interfaces
17  *
18  * Copyright (c) 2008 Eliot Dresselhaus
19  *
20  * Permission is hereby granted, free of charge, to any person obtaining
21  * a copy of this software and associated documentation files (the
22  * "Software"), to deal in the Software without restriction, including
23  * without limitation the rights to use, copy, modify, merge, publish,
24  * distribute, sublicense, and/or sell copies of the Software, and to
25  * permit persons to whom the Software is furnished to do so, subject to
26  * the following conditions:
27  *
28  * The above copyright notice and this permission notice shall be
29  * included in all copies or substantial portions of the Software.
30  *
31  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38  */
39 
40 #include <vnet/vnet.h>
41 #include <vnet/ip/ip.h>
42 #include <vnet/pg/pg.h>
43 #include <vnet/ethernet/ethernet.h>
44 #include <vnet/l2/l2_input.h>
45 #include <vnet/adj/adj.h>
46 
47 /**
48  * @file
49  * @brief Loopback Interfaces.
50  *
51  * This file contains code to manage loopback interfaces.
52  */
53 
54 const u8 *
56 {
57  const static u8 ethernet_mcast_dst_mac[] = {
58  0x1, 0x0, 0x5e, 0x0, 0x0, 0x0,
59  };
60 
61  return (ethernet_mcast_dst_mac);
62 }
63 
64 const u8 *
66 {
67  const static u8 ethernet_mcast_dst_mac[] = {
68  0x33, 0x33, 0x00, 0x0, 0x0, 0x0,
69  };
70 
71  return (ethernet_mcast_dst_mac);
72 }
73 
74 /**
75  * @brief build a rewrite string to use for sending packets of type 'link_type'
76  * to 'dst_address'
77  */
78 u8 *
80  u32 sw_if_index,
81  vnet_link_t link_type, const void *dst_address)
82 {
83  vnet_sw_interface_t *sub_sw = vnet_get_sw_interface (vnm, sw_if_index);
84  vnet_sw_interface_t *sup_sw = vnet_get_sup_sw_interface (vnm, sw_if_index);
85  vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
89  ethernet_type_t type;
90  uword n_bytes = sizeof (h[0]);
91  u8 *rewrite = NULL;
92  u8 is_p2p = 0;
93 
94  if (sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P)
95  is_p2p = 1;
96  if (sub_sw != sup_sw)
97  {
98  if (sub_sw->sub.eth.flags.one_tag)
99  {
100  n_bytes += sizeof (ethernet_vlan_header_t);
101  }
102  else if (sub_sw->sub.eth.flags.two_tags)
103  {
104  n_bytes += 2 * (sizeof (ethernet_vlan_header_t));
105  }
106  else if (PREDICT_FALSE (is_p2p))
107  {
108  n_bytes = sizeof (ethernet_header_t);
109  }
110  if (PREDICT_FALSE (!is_p2p))
111  {
112  // Check for encaps that are not supported for L3 interfaces
113  if (!(sub_sw->sub.eth.flags.exact_match) ||
114  (sub_sw->sub.eth.flags.default_sub) ||
115  (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
116  (sub_sw->sub.eth.flags.inner_vlan_id_any))
117  {
118  return 0;
119  }
120  }
121  else
122  {
123  n_bytes = sizeof (ethernet_header_t);
124  }
125  }
126 
127  switch (link_type)
128  {
129 #define _(a,b) case VNET_LINK_##a: type = ETHERNET_TYPE_##b; break
130  _(IP4, IP4);
131  _(IP6, IP6);
132  _(MPLS, MPLS);
133  _(ARP, ARP);
134 #undef _
135  default:
136  return NULL;
137  }
138 
139  vec_validate (rewrite, n_bytes - 1);
140  h = (ethernet_header_t *) rewrite;
141  ei = pool_elt_at_index (em->interfaces, hw->hw_instance);
142  clib_memcpy (h->src_address, ei->address, sizeof (h->src_address));
143  if (is_p2p)
144  {
145  clib_memcpy (h->dst_address, sub_sw->p2p.client_mac,
146  sizeof (h->dst_address));
147  }
148  else
149  {
150  if (dst_address)
151  clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
152  else
153  memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
154  }
155 
156  if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag)
157  {
158  ethernet_vlan_header_t *outer = (void *) (h + 1);
159 
160  h->type = sub_sw->sub.eth.flags.dot1ad ?
161  clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
162  clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
163  outer->priority_cfi_and_id =
164  clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
165  outer->type = clib_host_to_net_u16 (type);
166 
167  }
168  else if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.two_tags)
169  {
170  ethernet_vlan_header_t *outer = (void *) (h + 1);
171  ethernet_vlan_header_t *inner = (void *) (outer + 1);
172 
173  h->type = sub_sw->sub.eth.flags.dot1ad ?
174  clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
175  clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
176  outer->priority_cfi_and_id =
177  clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
178  outer->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
179  inner->priority_cfi_and_id =
180  clib_host_to_net_u16 (sub_sw->sub.eth.inner_vlan_id);
181  inner->type = clib_host_to_net_u16 (type);
182 
183  }
184  else
185  {
186  h->type = clib_host_to_net_u16 (type);
187  }
188 
189  return (rewrite);
190 }
191 
192 void
194 {
195  ip_adjacency_t *adj;
196 
197  adj = adj_get (ai);
198 
199  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
200  if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
201  {
202  default_update_adjacency (vnm, sw_if_index, ai);
203  }
204  else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
205  {
206  arp_update_adjacency (vnm, sw_if_index, ai);
207  }
208  else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto)
209  {
210  ip6_ethernet_update_adjacency (vnm, sw_if_index, ai);
211  }
212  else
213  {
214  ASSERT (0);
215  }
216 }
217 
218 static clib_error_t *
220 {
222  ethernet_main_t *em;
223 
224  em = &ethernet_main;
225  ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
226 
228  STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1);
229  clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
230 
231  clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
234 
235  return (NULL);
236 }
237 
238 /* *INDENT-OFF* */
240  .name = "Ethernet",
241  .format_address = format_ethernet_address,
242  .format_header = format_ethernet_header_with_length,
243  .unformat_hw_address = unformat_ethernet_address,
244  .unformat_header = unformat_ethernet_header,
245  .build_rewrite = ethernet_build_rewrite,
246  .update_adjacency = ethernet_update_adjacency,
247  .mac_addr_change_function = ethernet_mac_change,
248 };
249 /* *INDENT-ON* */
250 
251 uword
253 {
254  vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
255  u32 *result = va_arg (*args, u32 *);
256  u32 hw_if_index;
259 
260  if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
261  return 0;
262 
263  eif = ethernet_get_interface (em, hw_if_index);
264  if (eif)
265  {
266  *result = hw_if_index;
267  return 1;
268  }
269  return 0;
270 }
271 
272 clib_error_t *
274  u32 dev_class_index,
275  u32 dev_instance,
276  u8 * address,
277  u32 * hw_if_index_return,
279 {
283  clib_error_t *error = 0;
284  u32 hw_if_index;
285 
286  pool_get (em->interfaces, ei);
287  ei->flag_change = flag_change;
288 
289  hw_if_index = vnet_register_interface
290  (vnm,
291  dev_class_index, dev_instance,
292  ethernet_hw_interface_class.index, ei - em->interfaces);
293  *hw_if_index_return = hw_if_index;
294 
295  hi = vnet_get_hw_interface (vnm, hw_if_index);
296 
298 
304  /* preamble */ 8 + /* inter frame gap */ 12;
305 
306  /* Standard default ethernet MTU. */
308 
309  clib_memcpy (ei->address, address, sizeof (ei->address));
310  vec_add (hi->hw_address, address, sizeof (ei->address));
311 
312  if (error)
313  {
314  pool_put (em->interfaces, ei);
315  return error;
316  }
317  return error;
318 }
319 
320 void
322 {
326  main_intf_t *main_intf;
327  vlan_table_t *vlan_table;
328  u32 idx;
329 
330  hi = vnet_get_hw_interface (vnm, hw_if_index);
331  ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
332 
333  /* Delete vlan mapping table for dot1q and dot1ad. */
334  main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
335  if (main_intf->dot1q_vlans)
336  {
337  vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
338  for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
339  {
340  if (vlan_table->vlans[idx].qinqs)
341  {
342  pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
343  }
344  }
345  pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
346  main_intf->dot1q_vlans = 0;
347  }
348  if (main_intf->dot1ad_vlans)
349  {
350  vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
351  for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
352  {
353  if (vlan_table->vlans[idx].qinqs)
354  {
355  pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
356  }
357  }
358  pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
359  main_intf->dot1ad_vlans = 0;
360  }
361 
362  vnet_delete_hw_interface (vnm, hw_if_index);
363  pool_put (em->interfaces, ei);
364 }
365 
366 u32
368 {
372 
373  hi = vnet_get_hw_interface (vnm, hw_if_index);
374 
376 
377  ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
378  if (ei->flag_change)
379  return ei->flag_change (vnm, hi, flags);
380  return (u32) ~ 0;
381 }
382 
383 /* Echo packets back to ethernet/l2-input. */
384 static uword
386  vlib_node_runtime_t * node,
387  vlib_frame_t * frame)
388 {
389  u32 n_left_from, n_left_to_next, n_copy, *from, *to_next;
391  u32 i, next_node_index, bvi_flag, sw_if_index;
392  u32 n_pkts = 0, n_bytes = 0;
393  u32 thread_index = vm->thread_index;
394  vnet_main_t *vnm = vnet_get_main ();
396  vlib_node_main_t *nm = &vm->node_main;
397  vlib_node_t *loop_node;
398  vlib_buffer_t *b;
399 
400  // check tx node index, it is ethernet-input on loopback create
401  // but can be changed to l2-input if loopback is configured as
402  // BVI of a BD (Bridge Domain).
403  loop_node = vec_elt (nm->nodes, node->node_index);
404  next_node_index = loop_node->next_nodes[next_index];
405  bvi_flag = (next_node_index == l2input_node.index) ? 1 : 0;
406 
407  n_left_from = frame->n_vectors;
408  from = vlib_frame_args (frame);
409 
410  while (n_left_from > 0)
411  {
412  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
413 
414  n_copy = clib_min (n_left_from, n_left_to_next);
415 
416  clib_memcpy (to_next, from, n_copy * sizeof (from[0]));
417  n_left_to_next -= n_copy;
418  n_left_from -= n_copy;
419  i = 0;
420  b = vlib_get_buffer (vm, from[i]);
421  sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
422  while (1)
423  {
424  // Set up RX and TX indices as if received from a real driver
425  // unless loopback is used as a BVI. For BVI case, leave TX index
426  // and update l2_len in packet as required for l2 forwarding path
427  vnet_buffer (b)->sw_if_index[VLIB_RX] = sw_if_index;
428  if (bvi_flag)
429  {
430  vnet_update_l2_len (b);
431  vnet_buffer (b)->sw_if_index[VLIB_TX] = L2INPUT_BVI;
432  }
433  else
434  vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0;
435 
436  i++;
437  n_pkts++;
438  n_bytes += vlib_buffer_length_in_chain (vm, b);
439 
440  if (i < n_copy)
441  b = vlib_get_buffer (vm, from[i]);
442  else
443  break;
444  }
445  from += n_copy;
446 
447  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
448 
449  /* increment TX interface stat */
452  thread_index, sw_if_index, n_pkts,
453  n_bytes);
454  }
455 
456  return n_left_from;
457 }
458 
459 static u8 *
460 format_simulated_ethernet_name (u8 * s, va_list * args)
461 {
462  u32 dev_instance = va_arg (*args, u32);
463  return format (s, "loop%d", dev_instance);
464 }
465 
466 static clib_error_t *
468  u32 flags)
469 {
470  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
472  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
473  return 0;
474 }
475 
476 /* *INDENT-OFF* */
477 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
478  .name = "Loopback",
479  .format_device_name = format_simulated_ethernet_name,
480  .tx_function = simulated_ethernet_interface_tx,
481  .admin_up_down_function = simulated_ethernet_admin_up_down,
482 };
483 /* *INDENT-ON* */
484 
485 
486 /*
487  * Maintain a bitmap of allocated loopback instance numbers.
488  */
489 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
490 
491 static u32
492 loopback_instance_alloc (u8 is_specified, u32 want)
493 {
495 
496  /*
497  * Check for dynamically allocaetd instance number.
498  */
499  if (!is_specified)
500  {
501  u32 bit;
502 
504  if (bit >= LOOPBACK_MAX_INSTANCE)
505  {
506  return ~0;
507  }
509  bit, 1);
510  return bit;
511  }
512 
513  /*
514  * In range?
515  */
516  if (want >= LOOPBACK_MAX_INSTANCE)
517  {
518  return ~0;
519  }
520 
521  /*
522  * Already in use?
523  */
524  if (clib_bitmap_get (em->bm_loopback_instances, want))
525  {
526  return ~0;
527  }
528 
529  /*
530  * Grant allocation request.
531  */
533  want, 1);
534 
535  return want;
536 }
537 
538 static int
540 {
542 
543  if (instance >= LOOPBACK_MAX_INSTANCE)
544  {
545  return -1;
546  }
547 
548  if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
549  {
550  return -1;
551  }
552 
554  instance, 0);
555  return 0;
556 }
557 
558 int
559 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
560  u8 is_specified, u32 user_instance)
561 {
562  vnet_main_t *vnm = vnet_get_main ();
564  clib_error_t *error;
565  u32 instance;
566  u8 address[6];
567  u32 hw_if_index;
568  vnet_hw_interface_t *hw_if;
569  u32 slot;
570  int rv = 0;
571 
572  ASSERT (sw_if_indexp);
573 
574  *sw_if_indexp = (u32) ~ 0;
575 
576  memset (address, 0, sizeof (address));
577 
578  /*
579  * Allocate a loopback instance. Either select on dynamically
580  * or try to use the desired user_instance number.
581  */
582  instance = loopback_instance_alloc (is_specified, user_instance);
583  if (instance == ~0)
584  {
585  return VNET_API_ERROR_INVALID_REGISTRATION;
586  }
587 
588  /*
589  * Default MAC address (dead:0000:0000 + instance) is allocated
590  * if zero mac_address is configured. Otherwise, user-configurable MAC
591  * address is programmed on the loopback interface.
592  */
593  if (memcmp (address, mac_address, sizeof (address)))
594  clib_memcpy (address, mac_address, sizeof (address));
595  else
596  {
597  address[0] = 0xde;
598  address[1] = 0xad;
599  address[5] = instance;
600  }
601 
603  (vnm,
604  ethernet_simulated_device_class.index, instance, address, &hw_if_index,
605  /* flag change */ 0);
606 
607  if (error)
608  {
609  rv = VNET_API_ERROR_INVALID_REGISTRATION;
610  clib_error_report (error);
611  return rv;
612  }
613 
614  hw_if = vnet_get_hw_interface (vnm, hw_if_index);
616  (vm, hw_if->tx_node_index,
619 
620  {
621  vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
622  *sw_if_indexp = si->sw_if_index;
623 
624  /* By default don't flood to loopbacks, as packets just keep
625  * coming back ... If this loopback becomes a BVI, we'll change it */
627  }
628 
629  return 0;
630 }
631 
632 static clib_error_t *
634  unformat_input_t * input,
635  vlib_cli_command_t * cmd)
636 {
637  int rv;
638  u32 sw_if_index;
639  u8 mac_address[6];
640  u8 is_specified = 0;
641  u32 user_instance = 0;
642 
643  memset (mac_address, 0, sizeof (mac_address));
644 
646  {
647  if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
648  ;
649  if (unformat (input, "instance %d", &user_instance))
650  is_specified = 1;
651  else
652  break;
653  }
654 
655  rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
656  is_specified, user_instance);
657 
658  if (rv)
659  return clib_error_return (0, "vnet_create_loopback_interface failed");
660 
662  sw_if_index);
663  return 0;
664 }
665 
666 /*?
667  * Create a loopback interface. Optionally, a MAC Address can be
668  * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
669  *
670  * @cliexpar
671  * The following two command syntaxes are equivalent:
672  * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
673  * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
674  * Example of how to create a loopback interface:
675  * @cliexcmd{loopback create-interface}
676 ?*/
677 /* *INDENT-OFF* */
678 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
679  .path = "loopback create-interface",
680  .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
682 };
683 /* *INDENT-ON* */
684 
685 /*?
686  * Create a loopback interface. Optionally, a MAC Address can be
687  * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
688  *
689  * @cliexpar
690  * The following two command syntaxes are equivalent:
691  * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
692  * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
693  * Example of how to create a loopback interface:
694  * @cliexcmd{create loopback interface}
695 ?*/
696 /* *INDENT-OFF* */
697 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
698  .path = "create loopback interface",
699  .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
701 };
702 /* *INDENT-ON* */
703 
706 {
708  vnet_get_hw_interface (vnet_get_main (), hw_if_index);
709  return (i->hw_class_index ==
711  index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
712 }
713 
714 int
716 {
717  vnet_main_t *vnm = vnet_get_main ();
719  u32 hw_if_index;
721  u32 instance;
722 
723  if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
724  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
725 
726  si = vnet_get_sw_interface (vnm, sw_if_index);
727  hw_if_index = si->hw_if_index;
728  hw = vnet_get_hw_interface (vnm, hw_if_index);
729  instance = hw->dev_instance;
730 
731  if (loopback_instance_free (instance) < 0)
732  {
733  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
734  }
735 
736  ethernet_delete_interface (vnm, hw_if_index);
737 
738  return 0;
739 }
740 
741 int
743 {
744  vnet_main_t *vnm = vnet_get_main ();
746  int rv = 0;
747 
748  if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
749  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
750 
751  si = vnet_get_sw_interface (vnm, sw_if_index);
752  if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
754  {
756  vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
757  u64 sup_and_sub_key =
758  ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
759  hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
761  vnet_delete_sw_interface (vnm, sw_if_index);
762  }
763  else
764  rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
765 
766  return rv;
767 }
768 
769 static clib_error_t *
771  unformat_input_t * input,
772  vlib_cli_command_t * cmd)
773 {
774  int rv;
775  u32 sw_if_index = ~0;
776  vnet_main_t *vnm = vnet_get_main ();
777 
779  {
780  if (unformat (input, "intfc %U",
781  unformat_vnet_sw_interface, vnm, &sw_if_index))
782  ;
783  else
784  break;
785  }
786 
787  if (sw_if_index == ~0)
788  return clib_error_return (0, "interface not specified");
789 
790  rv = vnet_delete_loopback_interface (sw_if_index);
791 
792  if (rv)
793  return clib_error_return (0, "vnet_delete_loopback_interface failed");
794 
795  return 0;
796 }
797 
798 static clib_error_t *
800  unformat_input_t * input, vlib_cli_command_t * cmd)
801 {
802  int rv = 0;
803  u32 sw_if_index = ~0;
804  vnet_main_t *vnm = vnet_get_main ();
805 
807  {
808  if (unformat
809  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
810  ;
811  else
812  break;
813  }
814  if (sw_if_index == ~0)
815  return clib_error_return (0, "interface doesn't exist");
816 
817  if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
818  rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
819  else
820  rv = vnet_delete_sub_interface (sw_if_index);
821  if (rv)
822  return clib_error_return (0, "delete_subinterface_interface failed");
823  return 0;
824 }
825 
826 /*?
827  * Delete a loopback interface.
828  *
829  * @cliexpar
830  * The following two command syntaxes are equivalent:
831  * @cliexcmd{loopback delete-interface intfc <interface>}
832  * @cliexcmd{delete loopback interface intfc <interface>}
833  * Example of how to delete a loopback interface:
834  * @cliexcmd{loopback delete-interface intfc loop0}
835 ?*/
836 /* *INDENT-OFF* */
837 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
838  .path = "loopback delete-interface",
839  .short_help = "loopback delete-interface intfc <interface>",
841 };
842 /* *INDENT-ON* */
843 
844 /*?
845  * Delete a loopback interface.
846  *
847  * @cliexpar
848  * The following two command syntaxes are equivalent:
849  * @cliexcmd{loopback delete-interface intfc <interface>}
850  * @cliexcmd{delete loopback interface intfc <interface>}
851  * Example of how to delete a loopback interface:
852  * @cliexcmd{delete loopback interface intfc loop0}
853 ?*/
854 /* *INDENT-OFF* */
855 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
856  .path = "delete loopback interface",
857  .short_help = "delete loopback interface intfc <interface>",
859 };
860 /* *INDENT-ON* */
861 
862 /*?
863  * Delete a sub-interface.
864  *
865  * @cliexpar
866  * Example of how to delete a sub-interface:
867  * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
868 ?*/
869 /* *INDENT-OFF* */
870 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
871  .path = "delete sub-interface",
872  .short_help = "delete sub-interface <interface>",
873  .function = delete_sub_interface,
874 };
875 /* *INDENT-ON* */
876 
877 /*
878  * fd.io coding-style-patch-verification: ON
879  *
880  * Local Variables:
881  * eval: (c-set-style "gnu")
882  * End:
883  */
unformat_function_t unformat_vnet_hw_interface
u32 * next_nodes
Definition: node.h:288
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:434
vmrglw vmrglh hi
int vnet_delete_loopback_interface(u32 sw_if_index)
Definition: interface.c:715
const u8 * ethernet_ip6_mcast_dst_addr(void)
Definition: interface.c:65
#define ETHERNET_N_VLAN
Definition: packet.h:133
#define clib_min(x, y)
Definition: clib.h:340
static clib_error_t * delete_simulated_ethernet_interfaces(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: interface.c:770
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:554
#define hash_unset(h, key)
Definition: hash.h:260
static void vlib_increment_combined_counter(vlib_combined_counter_main_t *cm, u32 thread_index, u32 index, u64 n_packets, u64 n_bytes)
Increment a combined counter.
Definition: counter.h:211
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 vlib_node_add_named_next_with_slot(vlib_main_t *vm, uword node, char *name, uword slot)
Definition: node.c:262
vnet_p2p_sub_interface_t p2p
Definition: interface.h:627
#define NULL
Definition: clib.h:55
ethernet_type_t
Definition: packet.h:45
IP unicast adjacency.
Definition: adj.h:175
u8 src_address[6]
Definition: packet.h:56
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
u32 thread_index
Definition: main.h:176
vlib_node_registration_t l2input_node
(constructor) VLIB_REGISTER_NODE (l2input_node)
Definition: l2_input.c:457
void arp_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: arp.c:443
int i
int vnet_delete_sub_interface(u32 sw_if_index)
Definition: interface.c:742
static uword * clib_bitmap_set(uword *ai, uword i, uword value)
Sets the ith bit of a bitmap to new_value Removes trailing zeros from the bitmap. ...
Definition: bitmap.h:167
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
main_intf_t * main_intfs
Definition: ethernet.h:287
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
uword * sub_interface_sw_if_index_by_id
Definition: interface.h:483
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
unformat_function_t unformat_vnet_sw_interface
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:390
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
Definition: buffer_funcs.h:107
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:227
format_function_t format_vnet_sw_if_index_name
static vnet_sw_interface_t * vnet_get_hw_sw_interface(vnet_main_t *vnm, u32 hw_if_index)
#define vec_add(V, E, N)
Add N elements to end of vector V (no header, unspecified alignment)
Definition: vec.h:597
ethernet_main_t ethernet_main
Definition: init.c:45
static ip_adjacency_t * adj_get(adj_index_t adj_index)
Get a pointer to an adjacency object from its index.
Definition: adj.h:376
vnet_flood_class_t flood_class
Definition: interface.h:630
void default_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Default adjacency update function.
Definition: interface.c:1508
u8 * format_ethernet_address(u8 *s, va_list *args)
Definition: format.c:44
void ip6_ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: ip6_neighbor.c:614
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:718
u8 dst_address[6]
Definition: packet.h:55
vlib_node_t ** nodes
Definition: node.h:640
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
static vnet_sw_interface_t * vnet_get_sup_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
#define clib_error_return(e, args...)
Definition: error.h:99
unsigned long u64
Definition: types.h:89
ethernet_flag_change_function_t * flag_change
Definition: ethernet.h:157
static clib_error_t * simulated_ethernet_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:467
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
u32 max_supported_packet_bytes
Definition: interface.h:466
u16 dot1q_vlans
Definition: ethernet.h:221
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:461
vnet_sub_interface_t sub
Definition: interface.h:624
vlib_main_t * vlib_main
Definition: vnet.h:78
static u32 loopback_instance_alloc(u8 is_specified, u32 want)
Definition: interface.c:492
#define LOOPBACK_MAX_INSTANCE
Definition: interface.c:489
struct _unformat_input_t unformat_input_t
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:273
uword * sw_if_index_by_sup_and_sub
Definition: interface.h:712
static int loopback_instance_free(u32 instance)
Definition: interface.c:539
#define PREDICT_FALSE(x)
Definition: clib.h:105
static clib_error_t * ethernet_mac_change(vnet_hw_interface_t *hi, char *mac_address)
Definition: interface.c:219
u16 dot1ad_vlans
Definition: ethernet.h:222
u32 node_index
Node index.
Definition: node.h:437
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
Definition: node_funcs.h:364
#define L2INPUT_BVI
Definition: l2_input.h:101
vnet_hw_interface_class_t ethernet_hw_interface_class
uword unformat_ethernet_interface(unformat_input_t *input, va_list *args)
Definition: interface.c:252
static clib_error_t * create_simulated_ethernet_interfaces(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: interface.c:633
u8 * format_ethernet_header_with_length(u8 *s, va_list *args)
Definition: format.c:91
VNET_HW_INTERFACE_CLASS(ethernet_hw_interface_class)
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
u16 n_vectors
Definition: node.h:344
vlib_main_t * vm
Definition: buffer.c:294
#define clib_memcpy(a, b, c)
Definition: string.h:75
#define VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:270
const u8 * ethernet_ip4_mcast_dst_addr(void)
Definition: interface.c:55
void vlib_put_next_frame(vlib_main_t *vm, vlib_node_runtime_t *r, u32 next_index, u32 n_vectors_left)
Release pointer to next frame vector data.
Definition: main.c:454
static uword clib_bitmap_get(uword *ai, uword i)
Gets the ith bit value from a bitmap.
Definition: bitmap.h:197
int vnet_create_loopback_interface(u32 *sw_if_indexp, u8 *mac_address, u8 is_specified, u32 user_instance)
Definition: interface.c:559
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
static u8 * format_simulated_ethernet_name(u8 *s, va_list *args)
Definition: interface.c:460
void ethernet_delete_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:321
static uword simulated_ethernet_interface_tx(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: interface.c:385
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:588
u32 max_l3_packet_bytes[VLIB_N_RX_TX]
Definition: interface.h:480
uword unformat_ethernet_address(unformat_input_t *input, va_list *args)
Definition: format.c:227
#define pool_put_index(p, i)
Free pool element with given index.
Definition: pool.h:296
vlan_table_t * vlan_pool
Definition: ethernet.h:290
#define ASSERT(truth)
void ethernet_ndp_change_mac(u32 sw_if_index)
unsigned int u32
Definition: types.h:88
clib_error_t * ethernet_register_interface(vnet_main_t *vnm, u32 dev_class_index, u32 dev_instance, u8 *address, u32 *hw_if_index_return, ethernet_flag_change_function_t flag_change)
Definition: interface.c:273
enum vnet_link_t_ vnet_link_t
Link Type: A description of the protocol of packets on the link.
u32( ethernet_flag_change_function_t)(vnet_main_t *vnm, struct vnet_hw_interface_t *hi, u32 flags)
Definition: ethernet.h:137
#define clib_error_report(e)
Definition: error.h:113
static void * vlib_frame_args(vlib_frame_t *f)
Get pointer to frame scalar data.
Definition: node_funcs.h:284
vlan_intf_t vlans[ETHERNET_N_VLAN]
Definition: ethernet.h:234
uword * bm_loopback_instances
Definition: ethernet.h:305
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
void vnet_delete_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:917
u64 uword
Definition: types.h:112
#define vec_elt(v, i)
Get vector value at index i.
fib_protocol_t ia_nh_proto
The protocol of the neighbor/peer.
Definition: adj.h:203
Definition: defs.h:47
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
unsigned char u8
Definition: types.h:56
static void vnet_update_l2_len(vlib_buffer_t *b)
Definition: l2_input.h:217
vlib_node_main_t node_main
Definition: main.h:132
struct vnet_sub_interface_t::@191::@192::@194 flags
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:709
u32 ethernet_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:367
u8 * ethernet_build_rewrite(vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
build a rewrite string to use for sending packets of type &#39;link_type&#39; to &#39;dst_address&#39; ...
Definition: interface.c:79
Definition: lisp_types.h:37
static void hash_unset_mem_free(uword **h, void *key)
Definition: hash.h:294
#define vnet_buffer(b)
Definition: buffer.h:372
u32 min_supported_packet_bytes
Definition: interface.h:463
vnet_sw_interface_type_t type
Definition: interface.h:583
qinq_table_t * qinq_pool
Definition: ethernet.h:293
#define STRUCT_SIZE_OF(t, f)
Definition: clib.h:64
#define ETHERNET_MAX_PACKET_BYTES
Definition: ethernet.h:140
void vnet_delete_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface.c:652
ethernet_interface_t * ethernet_get_interface(ethernet_main_t *em, u32 hw_if_index)
Definition: interface.c:705
u32 per_packet_overhead_bytes
Definition: interface.h:477
VNET_DEVICE_CLASS(ethernet_simulated_device_class)
struct vnet_sub_interface_t::@191 eth
static uword clib_bitmap_first_clear(uword *ai)
Return the lowest numbered clear bit in a bitmap.
Definition: bitmap.h:424
u32 flags
Definition: vhost-user.h:77
Definition: lisp_types.h:38
ethernet_interface_t * interfaces
Definition: ethernet.h:278
#define ETHERNET_MIN_PACKET_BYTES
Definition: ethernet.h:139
void ethernet_arp_change_mac(u32 sw_if_index)
Definition: arp.c:2481
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:680
void ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: interface.c:193
static clib_error_t * delete_sub_interface(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: interface.c:799
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:57
static void ethernet_setup_node(vlib_main_t *vm, u32 node_index)
Definition: ethernet.h:369
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
Definition: defs.h:46
uword unformat_ethernet_header(unformat_input_t *input, va_list *args)
Definition: format.c:277
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169