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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 
93  if (sub_sw != sup_sw)
94  {
95  if (sub_sw->sub.eth.flags.one_tag)
96  {
97  n_bytes += sizeof (ethernet_vlan_header_t);
98  }
99  else if (sub_sw->sub.eth.flags.two_tags)
100  {
101  n_bytes += 2 * (sizeof (ethernet_vlan_header_t));
102  }
103  // Check for encaps that are not supported for L3 interfaces
104  if (!(sub_sw->sub.eth.flags.exact_match) ||
105  (sub_sw->sub.eth.flags.default_sub) ||
106  (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
107  (sub_sw->sub.eth.flags.inner_vlan_id_any))
108  {
109  return 0;
110  }
111  }
112 
113  switch (link_type)
114  {
115 #define _(a,b) case VNET_LINK_##a: type = ETHERNET_TYPE_##b; break
116  _(IP4, IP4);
117  _(IP6, IP6);
118  _(MPLS, MPLS_UNICAST);
119  _(ARP, ARP);
120 #undef _
121  default:
122  return NULL;
123  }
124 
125  vec_validate (rewrite, n_bytes - 1);
126  h = (ethernet_header_t *) rewrite;
127  ei = pool_elt_at_index (em->interfaces, hw->hw_instance);
128  clib_memcpy (h->src_address, ei->address, sizeof (h->src_address));
129  if (dst_address)
130  clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
131  else
132  memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
133 
134  if (sub_sw->sub.eth.flags.one_tag)
135  {
136  ethernet_vlan_header_t *outer = (void *) (h + 1);
137 
138  h->type = sub_sw->sub.eth.flags.dot1ad ?
139  clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
140  clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
141  outer->priority_cfi_and_id =
142  clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
143  outer->type = clib_host_to_net_u16 (type);
144 
145  }
146  else if (sub_sw->sub.eth.flags.two_tags)
147  {
148  ethernet_vlan_header_t *outer = (void *) (h + 1);
149  ethernet_vlan_header_t *inner = (void *) (outer + 1);
150 
151  h->type = sub_sw->sub.eth.flags.dot1ad ?
152  clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
153  clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
154  outer->priority_cfi_and_id =
155  clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
156  outer->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
157  inner->priority_cfi_and_id =
158  clib_host_to_net_u16 (sub_sw->sub.eth.inner_vlan_id);
159  inner->type = clib_host_to_net_u16 (type);
160 
161  }
162  else
163  {
164  h->type = clib_host_to_net_u16 (type);
165  }
166 
167  return (rewrite);
168 }
169 
170 void
172 {
173  ip_adjacency_t *adj;
174 
175  adj = adj_get (ai);
176 
177  if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
178  {
179  arp_update_adjacency (vnm, sw_if_index, ai);
180  }
181  else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto)
182  {
183  ip6_ethernet_update_adjacency (vnm, sw_if_index, ai);
184  }
185  else
186  {
187  ASSERT (0);
188  }
189 }
190 
191 static clib_error_t *
193 {
195  ethernet_main_t *em;
196 
197  em = &ethernet_main;
198  ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
199 
201  STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1);
202  clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
203 
204  clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
207 
208  return (NULL);
209 }
210 
211 /* *INDENT-OFF* */
213  .name = "Ethernet",
214  .format_address = format_ethernet_address,
215  .format_header = format_ethernet_header_with_length,
216  .unformat_hw_address = unformat_ethernet_address,
217  .unformat_header = unformat_ethernet_header,
218  .build_rewrite = ethernet_build_rewrite,
219  .update_adjacency = ethernet_update_adjacency,
220  .mac_addr_change_function = ethernet_mac_change,
221 };
222 /* *INDENT-ON* */
223 
224 uword
226 {
227  vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
228  u32 *result = va_arg (*args, u32 *);
229  u32 hw_if_index;
232 
233  if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
234  return 0;
235 
236  eif = ethernet_get_interface (em, hw_if_index);
237  if (eif)
238  {
239  *result = hw_if_index;
240  return 1;
241  }
242  return 0;
243 }
244 
245 clib_error_t *
247  u32 dev_class_index,
248  u32 dev_instance,
249  u8 * address,
250  u32 * hw_if_index_return,
252 {
256  clib_error_t *error = 0;
257  u32 hw_if_index;
258 
259  pool_get (em->interfaces, ei);
260  ei->flag_change = flag_change;
261 
262  hw_if_index = vnet_register_interface
263  (vnm,
264  dev_class_index, dev_instance,
265  ethernet_hw_interface_class.index, ei - em->interfaces);
266  *hw_if_index_return = hw_if_index;
267 
268  hi = vnet_get_hw_interface (vnm, hw_if_index);
269 
271 
277  /* preamble */ 8 + /* inter frame gap */ 12;
278 
279  /* Standard default ethernet MTU. */
281 
282  clib_memcpy (ei->address, address, sizeof (ei->address));
283  vec_free (hi->hw_address);
284  vec_add (hi->hw_address, address, sizeof (ei->address));
285 
286  if (error)
287  {
288  pool_put (em->interfaces, ei);
289  return error;
290  }
291  return error;
292 }
293 
294 void
296 {
300  main_intf_t *main_intf;
301  vlan_table_t *vlan_table;
302  u32 idx;
303 
304  hi = vnet_get_hw_interface (vnm, hw_if_index);
305  ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
306 
307  /* Delete vlan mapping table for dot1q and dot1ad. */
308  main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
309  if (main_intf->dot1q_vlans)
310  {
311  vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
312  for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
313  {
314  if (vlan_table->vlans[idx].qinqs)
315  {
316  pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
317  }
318  }
319  pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
320  }
321  if (main_intf->dot1ad_vlans)
322  {
323  vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
324  for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
325  {
326  if (vlan_table->vlans[idx].qinqs)
327  {
328  pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
329  }
330  }
331  pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
332  }
333 
334  vnet_delete_hw_interface (vnm, hw_if_index);
335  pool_put (em->interfaces, ei);
336 }
337 
338 u32
340 {
344 
345  hi = vnet_get_hw_interface (vnm, hw_if_index);
346 
348 
349  ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
350  if (ei->flag_change)
351  return ei->flag_change (vnm, hi, flags);
352  return (u32) ~ 0;
353 }
354 
355 /* Echo packets back to ethernet/l2-input. */
356 static uword
358  vlib_node_runtime_t * node,
359  vlib_frame_t * frame)
360 {
361  u32 n_left_from, n_left_to_next, n_copy, *from, *to_next;
363  u32 i, next_node_index, bvi_flag, sw_if_index;
364  u32 n_pkts = 0, n_bytes = 0;
365  u32 cpu_index = vm->cpu_index;
366  vnet_main_t *vnm = vnet_get_main ();
368  vlib_node_main_t *nm = &vm->node_main;
369  vlib_node_t *loop_node;
370  vlib_buffer_t *b;
371 
372  // check tx node index, it is ethernet-input on loopback create
373  // but can be changed to l2-input if loopback is configured as
374  // BVI of a BD (Bridge Domain).
375  loop_node = vec_elt (nm->nodes, node->node_index);
376  next_node_index = loop_node->next_nodes[next_index];
377  bvi_flag = (next_node_index == l2input_node.index) ? 1 : 0;
378 
379  n_left_from = frame->n_vectors;
380  from = vlib_frame_args (frame);
381 
382  while (n_left_from > 0)
383  {
384  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
385 
386  n_copy = clib_min (n_left_from, n_left_to_next);
387 
388  clib_memcpy (to_next, from, n_copy * sizeof (from[0]));
389  n_left_to_next -= n_copy;
390  n_left_from -= n_copy;
391  i = 0;
392  b = vlib_get_buffer (vm, from[i]);
393  sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
394  while (1)
395  {
396  // Set up RX and TX indices as if received from a real driver
397  // unless loopback is used as a BVI. For BVI case, leave TX index
398  // and update l2_len in packet as required for l2 forwarding path
399  vnet_buffer (b)->sw_if_index[VLIB_RX] = sw_if_index;
400  if (bvi_flag)
401  {
402  vnet_update_l2_len (b);
403  vnet_buffer (b)->sw_if_index[VLIB_TX] = L2INPUT_BVI;
404  }
405  else
406  vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0;
407 
408  i++;
409  n_pkts++;
410  n_bytes += vlib_buffer_length_in_chain (vm, b);
411 
412  if (i < n_copy)
413  b = vlib_get_buffer (vm, from[i]);
414  else
415  break;
416  }
417  from += n_copy;
418 
419  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
420 
421  /* increment TX interface stat */
423  VNET_INTERFACE_COUNTER_TX, cpu_index,
424  sw_if_index, n_pkts, n_bytes);
425  }
426 
427  return n_left_from;
428 }
429 
430 static u8 *
431 format_simulated_ethernet_name (u8 * s, va_list * args)
432 {
433  u32 dev_instance = va_arg (*args, u32);
434  return format (s, "loop%d", dev_instance);
435 }
436 
437 static clib_error_t *
439  u32 flags)
440 {
441  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
443  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
444  return 0;
445 }
446 
447 /* *INDENT-OFF* */
448 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
449  .name = "Loopback",
450  .format_device_name = format_simulated_ethernet_name,
451  .tx_function = simulated_ethernet_interface_tx,
452  .admin_up_down_function = simulated_ethernet_admin_up_down,
453 };
454 /* *INDENT-ON* */
455 
456 
457 /*
458  * Maintain a bitmap of allocated loopback instance numbers.
459  */
460 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
461 
462 static u32
463 loopback_instance_alloc (u8 is_specified, u32 want)
464 {
466 
467  /*
468  * Check for dynamically allocaetd instance number.
469  */
470  if (!is_specified)
471  {
472  u32 bit;
473 
475  if (bit >= LOOPBACK_MAX_INSTANCE)
476  {
477  return ~0;
478  }
480  bit, 1);
481  return bit;
482  }
483 
484  /*
485  * In range?
486  */
487  if (want >= LOOPBACK_MAX_INSTANCE)
488  {
489  return ~0;
490  }
491 
492  /*
493  * Already in use?
494  */
495  if (clib_bitmap_get (em->bm_loopback_instances, want))
496  {
497  return ~0;
498  }
499 
500  /*
501  * Grant allocation request.
502  */
504  want, 1);
505 
506  return want;
507 }
508 
509 static int
511 {
513 
514  if (instance >= LOOPBACK_MAX_INSTANCE)
515  {
516  return -1;
517  }
518 
519  if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
520  {
521  return -1;
522  }
523 
525  instance, 0);
526  return 0;
527 }
528 
529 int
530 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
531  u8 is_specified, u32 user_instance)
532 {
533  vnet_main_t *vnm = vnet_get_main ();
535  clib_error_t *error;
536  u32 instance;
537  u8 address[6];
538  u32 hw_if_index;
539  vnet_hw_interface_t *hw_if;
540  u32 slot;
541  int rv = 0;
542 
543  ASSERT (sw_if_indexp);
544 
545  *sw_if_indexp = (u32) ~ 0;
546 
547  memset (address, 0, sizeof (address));
548 
549  /*
550  * Allocate a loopback instance. Either select on dynamically
551  * or try to use the desired user_instance number.
552  */
553  instance = loopback_instance_alloc (is_specified, user_instance);
554  if (instance == ~0)
555  {
556  return VNET_API_ERROR_INVALID_REGISTRATION;
557  }
558 
559  /*
560  * Default MAC address (dead:0000:0000 + instance) is allocated
561  * if zero mac_address is configured. Otherwise, user-configurable MAC
562  * address is programmed on the loopback interface.
563  */
564  if (memcmp (address, mac_address, sizeof (address)))
565  clib_memcpy (address, mac_address, sizeof (address));
566  else
567  {
568  address[0] = 0xde;
569  address[1] = 0xad;
570  address[5] = instance;
571  }
572 
574  (vnm,
575  ethernet_simulated_device_class.index, instance, address, &hw_if_index,
576  /* flag change */ 0);
577 
578  if (error)
579  {
580  rv = VNET_API_ERROR_INVALID_REGISTRATION;
581  clib_error_report (error);
582  return rv;
583  }
584 
585  hw_if = vnet_get_hw_interface (vnm, hw_if_index);
587  (vm, hw_if->tx_node_index,
590 
591  {
592  vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
593  *sw_if_indexp = si->sw_if_index;
594  }
595 
596  return 0;
597 }
598 
599 static clib_error_t *
601  unformat_input_t * input,
602  vlib_cli_command_t * cmd)
603 {
604  int rv;
605  u32 sw_if_index;
606  u8 mac_address[6];
607  u8 is_specified = 0;
608  u32 user_instance = 0;
609 
610  memset (mac_address, 0, sizeof (mac_address));
611 
613  {
614  if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
615  ;
616  if (unformat (input, "instance %d", &user_instance))
617  is_specified = 1;
618  else
619  break;
620  }
621 
622  rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
623  is_specified, user_instance);
624 
625  if (rv)
626  return clib_error_return (0, "vnet_create_loopback_interface failed");
627 
629  sw_if_index);
630  return 0;
631 }
632 
633 /*?
634  * Create a loopback interface. Optionally, a MAC Address can be
635  * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
636  *
637  * @cliexpar
638  * The following two command syntaxes are equivalent:
639  * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
640  * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
641  * Example of how to create a loopback interface:
642  * @cliexcmd{loopback create-interface}
643 ?*/
644 /* *INDENT-OFF* */
645 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
646  .path = "loopback create-interface",
647  .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
649 };
650 /* *INDENT-ON* */
651 
652 /*?
653  * Create a loopback interface. Optionally, a MAC Address can be
654  * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
655  *
656  * @cliexpar
657  * The following two command syntaxes are equivalent:
658  * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
659  * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
660  * Example of how to create a loopback interface:
661  * @cliexcmd{create loopback interface}
662 ?*/
663 /* *INDENT-OFF* */
664 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
665  .path = "create loopback interface",
666  .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
668 };
669 /* *INDENT-ON* */
670 
673 {
675  vnet_get_hw_interface (vnet_get_main (), hw_if_index);
676  return (i->hw_class_index ==
678  index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
679 }
680 
681 int
683 {
684  vnet_main_t *vnm = vnet_get_main ();
686  u32 hw_if_index;
688  u32 instance;
689 
690  if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
691  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
692 
693  si = vnet_get_sw_interface (vnm, sw_if_index);
694  hw_if_index = si->hw_if_index;
695  hw = vnet_get_hw_interface (vnm, hw_if_index);
696  instance = hw->dev_instance;
697 
698  if (loopback_instance_free (instance) < 0)
699  {
700  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
701  }
702 
703  ethernet_delete_interface (vnm, hw_if_index);
704 
705  return 0;
706 }
707 
708 int
710 {
711  vnet_main_t *vnm = vnet_get_main ();
712  int rv = 0;
713 
714  if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
715  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
716 
717 
719  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
720 
721  if (si->type == VNET_SW_INTERFACE_TYPE_SUB)
722  {
723  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
724  u64 sup_and_sub_key =
725  ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
726 
727  hash_unset_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
728  vnet_delete_sw_interface (vnm, sw_if_index);
729  }
730  else
731  {
732  rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
733  }
734  return rv;
735 }
736 
737 static clib_error_t *
739  unformat_input_t * input,
740  vlib_cli_command_t * cmd)
741 {
742  int rv;
743  u32 sw_if_index = ~0;
744  vnet_main_t *vnm = vnet_get_main ();
745 
747  {
748  if (unformat (input, "intfc %U",
749  unformat_vnet_sw_interface, vnm, &sw_if_index))
750  ;
751  else
752  break;
753  }
754 
755  if (sw_if_index == ~0)
756  return clib_error_return (0, "interface not specified");
757 
758  rv = vnet_delete_loopback_interface (sw_if_index);
759 
760  if (rv)
761  return clib_error_return (0, "vnet_delete_loopback_interface failed");
762 
763  return 0;
764 }
765 
766 static clib_error_t *
768  unformat_input_t * input, vlib_cli_command_t * cmd)
769 {
770  int rv = 0;
771  u32 sw_if_index = ~0;
772  vnet_main_t *vnm = vnet_get_main ();
773 
775  {
776  if (unformat
777  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
778  ;
779  else
780  break;
781  }
782  if (sw_if_index == ~0)
783  return clib_error_return (0, "interface doesn't exist");
784 
785  if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
786  rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
787  else
788  rv = vnet_delete_sub_interface (sw_if_index);
789  if (rv)
790  return clib_error_return (0, "delete_subinterface_interface failed");
791  return 0;
792 }
793 
794 /*?
795  * Delete a loopback interface.
796  *
797  * @cliexpar
798  * The following two command syntaxes are equivalent:
799  * @cliexcmd{loopback delete-interface intfc <interface>}
800  * @cliexcmd{delete loopback interface intfc <interface>}
801  * Example of how to delete a loopback interface:
802  * @cliexcmd{loopback delete-interface intfc loop0}
803 ?*/
804 /* *INDENT-OFF* */
805 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
806  .path = "loopback delete-interface",
807  .short_help = "loopback delete-interface intfc <interface>",
809 };
810 /* *INDENT-ON* */
811 
812 /*?
813  * Delete a loopback interface.
814  *
815  * @cliexpar
816  * The following two command syntaxes are equivalent:
817  * @cliexcmd{loopback delete-interface intfc <interface>}
818  * @cliexcmd{delete loopback interface intfc <interface>}
819  * Example of how to delete a loopback interface:
820  * @cliexcmd{delete loopback interface intfc loop0}
821 ?*/
822 /* *INDENT-OFF* */
823 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
824  .path = "delete loopback interface",
825  .short_help = "delete loopback interface intfc <interface>",
827 };
828 /* *INDENT-ON* */
829 
830 /*?
831  * Delete a sub-interface.
832  *
833  * @cliexpar
834  * Example of how to delete a sub-interface:
835  * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
836 ?*/
837 /* *INDENT-OFF* */
838 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
839  .path = "delete sub-interface",
840  .short_help = "delete sub-interface <interface>",
841  .function = delete_sub_interface,
842 };
843 /* *INDENT-ON* */
844 
845 /*
846  * fd.io coding-style-patch-verification: ON
847  *
848  * Local Variables:
849  * eval: (c-set-style "gnu")
850  * End:
851  */
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:436
vmrglw vmrglh hi
int vnet_delete_loopback_interface(u32 sw_if_index)
Definition: interface.c:682
const u8 * ethernet_ip6_mcast_dst_addr(void)
Definition: interface.c:65
#define ETHERNET_N_VLAN
Definition: packet.h:88
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:343
#define clib_min(x, y)
Definition: clib.h:332
static clib_error_t * delete_simulated_ethernet_interfaces(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: interface.c:738
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:530
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
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:57
uword vlib_node_add_named_next_with_slot(vlib_main_t *vm, uword node, char *name, uword slot)
Definition: node.c:233
#define NULL
Definition: clib.h:55
ethernet_type_t
Definition: packet.h:43
IP unicast adjacency.
Definition: lookup.h:193
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:459
u8 src_address[6]
Definition: packet.h:54
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
vlib_node_registration_t l2input_node
(constructor) VLIB_REGISTER_NODE (l2input_node)
Definition: l2_input.c:420
void arp_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: arp.c:433
int vnet_delete_sub_interface(u32 sw_if_index)
Definition: interface.c:709
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:982
main_intf_t * main_intfs
Definition: ethernet.h:252
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:418
unformat_function_t unformat_vnet_sw_interface
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:379
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:100
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:200
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:599
struct vnet_sub_interface_t::@117::@118::@120 flags
ethernet_main_t ethernet_main
Definition: ethernet.h:273
static ip_adjacency_t * adj_get(adj_index_t adj_index)
Get a pointer to an adjacency object from its index.
Definition: adj.h:128
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:491
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:626
u8 dst_address[6]
Definition: packet.h:53
vlib_node_t ** nodes
Definition: node.h:633
#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:111
u32 cpu_index
Definition: main.h:159
unsigned long u64
Definition: types.h:89
ethernet_flag_change_function_t * flag_change
Definition: ethernet.h:123
static clib_error_t * simulated_ethernet_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:438
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:681
u32 max_supported_packet_bytes
Definition: interface.h:437
u16 dot1q_vlans
Definition: ethernet.h:186
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:397
#define hash_unset_mem(h, key)
Definition: hash.h:280
vnet_sub_interface_t sub
Definition: interface.h:569
vlib_main_t * vlib_main
Definition: vnet.h:79
static u32 loopback_instance_alloc(u8 is_specified, u32 want)
Definition: interface.c:463
#define LOOPBACK_MAX_INSTANCE
Definition: interface.c:460
struct _unformat_input_t unformat_input_t
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:241
uword * sw_if_index_by_sup_and_sub
Definition: interface.h:620
static int loopback_instance_free(u32 instance)
Definition: interface.c:510
static clib_error_t * ethernet_mac_change(vnet_hw_interface_t *hi, char *mac_address)
Definition: interface.c:192
u16 dot1ad_vlans
Definition: ethernet.h:187
u32 node_index
Node index.
Definition: node.h:436
#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:350
#define L2INPUT_BVI
Definition: l2_input.h:93
vnet_hw_interface_class_t ethernet_hw_interface_class
uword unformat_ethernet_interface(unformat_input_t *input, va_list *args)
Definition: interface.c:225
static clib_error_t * create_simulated_ethernet_interfaces(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: interface.c:600
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:276
vec_header_t h
Definition: buffer.c:275
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:340
#define clib_memcpy(a, b, c)
Definition: string.h:69
#define VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT
struct vnet_sub_interface_t::@117 eth
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:238
const u8 * ethernet_ip4_mcast_dst_addr(void)
Definition: interface.c:55
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:530
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
static u8 * format_simulated_ethernet_name(u8 *s, va_list *args)
Definition: interface.c:431
void ethernet_delete_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:295
static uword simulated_ethernet_interface_tx(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: interface.c:357
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:536
u32 max_l3_packet_bytes[VLIB_N_RX_TX]
Definition: interface.h:451
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:255
vlan_table_t * vlan_pool
Definition: ethernet.h:255
#define ASSERT(truth)
void ethernet_ndp_change_mac(u32 sw_if_index)
unsigned int u32
Definition: types.h:88
static void vlib_increment_combined_counter(vlib_combined_counter_main_t *cm, u32 cpu_index, u32 index, u64 n_packets, u64 n_bytes)
Increment a combined counter.
Definition: counter.h:211
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:246
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:103
#define clib_error_report(e)
Definition: error.h:125
static void * vlib_frame_args(vlib_frame_t *f)
Get pointer to frame scalar data.
Definition: node_funcs.h:270
vlan_intf_t vlans[ETHERNET_N_VLAN]
Definition: ethernet.h:199
uword * bm_loopback_instances
Definition: ethernet.h:270
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:881
u64 uword
Definition: types.h:112
#define vec_elt(v, i)
Get vector value at index i.
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:196
vlib_node_main_t node_main
Definition: main.h:115
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:617
u32 ethernet_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:339
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
#define vnet_buffer(b)
Definition: buffer.h:294
u32 min_supported_packet_bytes
Definition: interface.h:434
vnet_sw_interface_type_t type
Definition: interface.h:531
qinq_table_t * qinq_pool
Definition: ethernet.h:258
#define STRUCT_SIZE_OF(t, f)
Definition: clib.h:64
#define ETHERNET_MAX_PACKET_BYTES
Definition: ethernet.h:106
void vnet_delete_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface.c:628
ethernet_interface_t * ethernet_get_interface(ethernet_main_t *em, u32 hw_if_index)
Definition: interface.c:672
u32 per_packet_overhead_bytes
Definition: interface.h:448
VNET_DEVICE_CLASS(ethernet_simulated_device_class)
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:78
Definition: lisp_types.h:38
ethernet_interface_t * interfaces
Definition: ethernet.h:243
#define ETHERNET_MIN_PACKET_BYTES
Definition: ethernet.h:105
void ethernet_arp_change_mac(u32 sw_if_index)
Definition: arp.c:2415
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:577
void ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: interface.c:171
static clib_error_t * delete_sub_interface(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: interface.c:767
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:334
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:971
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