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:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * ethernet_interface.c: ethernet interfaces
18 * Copyright (c) 2008 Eliot Dresselhaus
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:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
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.
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/l2/l2_bd.h>
46 #include <vnet/adj/adj.h>
50 * @brief Loopback Interfaces.
52 * This file contains code to manage loopback interfaces.
56 ethernet_ip4_mcast_dst_addr (void)
58 const static u8 ethernet_mcast_dst_mac[] = {
59 0x1, 0x0, 0x5e, 0x0, 0x0, 0x0,
62 return (ethernet_mcast_dst_mac);
66 ethernet_ip6_mcast_dst_addr (void)
68 const static u8 ethernet_mcast_dst_mac[] = {
69 0x33, 0x33, 0x00, 0x0, 0x0, 0x0,
72 return (ethernet_mcast_dst_mac);
76 * @brief build a rewrite string to use for sending packets of type 'link_type'
80 ethernet_build_rewrite (vnet_main_t * vnm,
82 vnet_link_t link_type, const void *dst_address)
84 vnet_sw_interface_t *sub_sw = vnet_get_sw_interface (vnm, sw_if_index);
85 vnet_sw_interface_t *sup_sw = vnet_get_sup_sw_interface (vnm, sw_if_index);
86 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
87 ethernet_main_t *em = ðernet_main;
88 ethernet_interface_t *ei;
91 uword n_bytes = sizeof (h[0]);
95 if ((sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P) ||
96 (sub_sw->type == VNET_SW_INTERFACE_TYPE_PIPE))
100 if (sub_sw->sub.eth.flags.one_tag)
102 n_bytes += sizeof (ethernet_vlan_header_t);
104 else if (sub_sw->sub.eth.flags.two_tags)
106 n_bytes += 2 * (sizeof (ethernet_vlan_header_t));
108 else if (PREDICT_FALSE (is_p2p))
110 n_bytes = sizeof (ethernet_header_t);
112 if (PREDICT_FALSE (!is_p2p))
114 // Check for encaps that are not supported for L3 interfaces
115 if (!(sub_sw->sub.eth.flags.exact_match) ||
116 (sub_sw->sub.eth.flags.default_sub) ||
117 (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
118 (sub_sw->sub.eth.flags.inner_vlan_id_any))
125 n_bytes = sizeof (ethernet_header_t);
131 #define _(a,b) case VNET_LINK_##a: type = ETHERNET_TYPE_##b; break
141 vec_validate (rewrite, n_bytes - 1);
142 h = (ethernet_header_t *) rewrite;
143 ei = pool_elt_at_index (em->interfaces, hw->hw_instance);
144 clib_memcpy (h->src_address, ei->address, sizeof (h->src_address));
147 clib_memcpy (h->dst_address, sub_sw->p2p.client_mac,
148 sizeof (h->dst_address));
153 clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
155 clib_memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
158 if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag)
160 ethernet_vlan_header_t *outer = (void *) (h + 1);
162 h->type = sub_sw->sub.eth.flags.dot1ad ?
163 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
164 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
165 outer->priority_cfi_and_id =
166 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
167 outer->type = clib_host_to_net_u16 (type);
170 else if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.two_tags)
172 ethernet_vlan_header_t *outer = (void *) (h + 1);
173 ethernet_vlan_header_t *inner = (void *) (outer + 1);
175 h->type = sub_sw->sub.eth.flags.dot1ad ?
176 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
177 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
178 outer->priority_cfi_and_id =
179 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
180 outer->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
181 inner->priority_cfi_and_id =
182 clib_host_to_net_u16 (sub_sw->sub.eth.inner_vlan_id);
183 inner->type = clib_host_to_net_u16 (type);
188 h->type = clib_host_to_net_u16 (type);
195 ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
201 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
202 if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
203 (si->type == VNET_SW_INTERFACE_TYPE_PIPE))
205 default_update_adjacency (vnm, sw_if_index, ai);
207 else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
209 arp_update_adjacency (vnm, sw_if_index, ai);
211 else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto)
213 ip6_ethernet_update_adjacency (vnm, sw_if_index, ai);
221 static clib_error_t *
222 ethernet_mac_change (vnet_hw_interface_t * hi,
223 const u8 * old_address, const u8 * mac_address)
225 ethernet_interface_t *ei;
229 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
231 vec_validate (hi->hw_address,
232 STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1);
233 clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
235 clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
236 ethernet_arp_change_mac (hi->sw_if_index);
237 ethernet_ndp_change_mac (hi->sw_if_index);
243 VNET_HW_INTERFACE_CLASS (ethernet_hw_interface_class) = {
245 .format_address = format_ethernet_address,
246 .format_header = format_ethernet_header_with_length,
247 .unformat_hw_address = unformat_ethernet_address,
248 .unformat_header = unformat_ethernet_header,
249 .build_rewrite = ethernet_build_rewrite,
250 .update_adjacency = ethernet_update_adjacency,
251 .mac_addr_change_function = ethernet_mac_change,
256 unformat_ethernet_interface (unformat_input_t * input, va_list * args)
258 vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
259 u32 *result = va_arg (*args, u32 *);
261 ethernet_main_t *em = ðernet_main;
262 ethernet_interface_t *eif;
264 if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
267 eif = ethernet_get_interface (em, hw_if_index);
270 *result = hw_if_index;
277 ethernet_register_interface (vnet_main_t * vnm,
281 u32 * hw_if_index_return,
282 ethernet_flag_change_function_t flag_change)
284 ethernet_main_t *em = ðernet_main;
285 ethernet_interface_t *ei;
286 vnet_hw_interface_t *hi;
287 clib_error_t *error = 0;
290 pool_get (em->interfaces, ei);
291 ei->flag_change = flag_change;
293 hw_if_index = vnet_register_interface
295 dev_class_index, dev_instance,
296 ethernet_hw_interface_class.index, ei - em->interfaces);
297 *hw_if_index_return = hw_if_index;
299 hi = vnet_get_hw_interface (vnm, hw_if_index);
301 ethernet_setup_node (vnm->vlib_main, hi->output_node_index);
303 hi->min_packet_bytes = hi->min_supported_packet_bytes =
304 ETHERNET_MIN_PACKET_BYTES;
305 hi->max_packet_bytes = hi->max_supported_packet_bytes =
306 ETHERNET_MAX_PACKET_BYTES;
308 /* Standard default ethernet MTU. */
309 vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, 9000);
311 clib_memcpy (ei->address, address, sizeof (ei->address));
312 vec_add (hi->hw_address, address, sizeof (ei->address));
316 pool_put (em->interfaces, ei);
323 ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index)
325 ethernet_main_t *em = ðernet_main;
326 ethernet_interface_t *ei;
327 vnet_hw_interface_t *hi;
328 main_intf_t *main_intf;
329 vlan_table_t *vlan_table;
332 hi = vnet_get_hw_interface (vnm, hw_if_index);
333 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
335 /* Delete vlan mapping table for dot1q and dot1ad. */
336 main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
337 if (main_intf->dot1q_vlans)
339 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
340 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
342 if (vlan_table->vlans[idx].qinqs)
344 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
345 vlan_table->vlans[idx].qinqs = 0;
348 pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
349 main_intf->dot1q_vlans = 0;
351 if (main_intf->dot1ad_vlans)
353 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
354 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
356 if (vlan_table->vlans[idx].qinqs)
358 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
359 vlan_table->vlans[idx].qinqs = 0;
362 pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
363 main_intf->dot1ad_vlans = 0;
366 vnet_delete_hw_interface (vnm, hw_if_index);
367 pool_put (em->interfaces, ei);
371 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
373 ethernet_main_t *em = ðernet_main;
374 vnet_hw_interface_t *hi;
375 ethernet_interface_t *ei;
377 hi = vnet_get_hw_interface (vnm, hw_if_index);
379 ASSERT (hi->hw_class_index == ethernet_hw_interface_class.index);
381 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
383 return ei->flag_change (vnm, hi, flags);
388 * Echo packets back to ethernet/l2-input.
391 simulated_ethernet_interface_tx (vlib_main_t * vm,
392 vlib_node_runtime_t *
393 node, vlib_frame_t * frame)
395 u32 n_left_from, *from;
398 u32 thread_index = vm->thread_index;
399 vnet_main_t *vnm = vnet_get_main ();
400 vnet_interface_main_t *im = &vnm->interface_main;
401 l2_input_config_t *config;
402 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
403 u16 nexts[VLIB_FRAME_SIZE], *next;
404 u32 new_rx_sw_if_index = ~0;
405 u32 new_tx_sw_if_index = ~0;
407 n_left_from = frame->n_vectors;
408 from = vlib_frame_vector_args (frame);
410 vlib_get_buffers (vm, from, bufs, n_left_from);
414 /* Ordinarily, this is the only config lookup. */
415 config = l2input_intf_config (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
417 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
418 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
419 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
420 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
422 while (n_left_from >= 4)
424 u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
425 u32 not_all_match_config;
427 /* Prefetch next iteration. */
428 if (PREDICT_TRUE (n_left_from >= 8))
430 vlib_prefetch_buffer_header (b[4], STORE);
431 vlib_prefetch_buffer_header (b[5], STORE);
432 vlib_prefetch_buffer_header (b[6], STORE);
433 vlib_prefetch_buffer_header (b[7], STORE);
436 /* Make sure all pkts were transmitted on the same (loop) intfc */
437 sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
438 sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
439 sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
440 sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
442 not_all_match_config = (sw_if_index0 ^ sw_if_index1)
443 ^ (sw_if_index2 ^ sw_if_index3);
444 not_all_match_config += sw_if_index0 ^ new_rx_sw_if_index;
446 /* Speed path / expected case: all pkts on the same intfc */
447 if (PREDICT_TRUE (not_all_match_config == 0))
449 next[0] = next_index;
450 next[1] = next_index;
451 next[2] = next_index;
452 next[3] = next_index;
453 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
454 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
455 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
456 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
457 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
458 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
459 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
460 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
461 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
462 n_bytes += vlib_buffer_length_in_chain (vm, b[1]);
463 n_bytes += vlib_buffer_length_in_chain (vm, b[2]);
464 n_bytes += vlib_buffer_length_in_chain (vm, b[3]);
466 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
468 vnet_update_l2_len (b[0]);
469 vnet_update_l2_len (b[1]);
470 vnet_update_l2_len (b[2]);
471 vnet_update_l2_len (b[3]);
474 /* increment TX interface stat */
475 vlib_increment_combined_counter (im->combined_sw_if_counters +
476 VNET_INTERFACE_COUNTER_TX,
477 thread_index, new_rx_sw_if_index,
478 4 /* pkts */ , n_bytes);
486 * Slow path: we know that at least one of the pkts
487 * was transmitted on a different sw_if_index, so
488 * check each sw_if_index against the cached data and proceed
491 * This shouldn't happen, but code can (and does) bypass the
492 * per-interface output node, so deal with it.
494 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
495 != new_rx_sw_if_index))
497 config = l2input_intf_config
498 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
500 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
501 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
502 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
503 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
505 next[0] = next_index;
506 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
507 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
508 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
509 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
510 vnet_update_l2_len (b[0]);
512 vlib_increment_combined_counter (im->combined_sw_if_counters +
513 VNET_INTERFACE_COUNTER_TX,
514 thread_index, new_rx_sw_if_index,
515 1 /* pkts */ , n_bytes);
517 if (PREDICT_FALSE (vnet_buffer (b[1])->sw_if_index[VLIB_TX]
518 != new_rx_sw_if_index))
520 config = l2input_intf_config
521 (vnet_buffer (b[1])->sw_if_index[VLIB_TX]);
523 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
524 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
525 new_rx_sw_if_index = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
526 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
528 next[1] = next_index;
529 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
530 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
531 n_bytes = vlib_buffer_length_in_chain (vm, b[1]);
532 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
533 vnet_update_l2_len (b[1]);
535 vlib_increment_combined_counter (im->combined_sw_if_counters +
536 VNET_INTERFACE_COUNTER_TX,
537 thread_index, new_rx_sw_if_index,
538 1 /* pkts */ , n_bytes);
540 if (PREDICT_FALSE (vnet_buffer (b[2])->sw_if_index[VLIB_TX]
541 != new_rx_sw_if_index))
543 config = l2input_intf_config
544 (vnet_buffer (b[2])->sw_if_index[VLIB_TX]);
546 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
547 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
548 new_rx_sw_if_index = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
549 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
551 next[2] = next_index;
552 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
553 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
554 n_bytes = vlib_buffer_length_in_chain (vm, b[2]);
555 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
556 vnet_update_l2_len (b[2]);
558 vlib_increment_combined_counter (im->combined_sw_if_counters +
559 VNET_INTERFACE_COUNTER_TX,
560 thread_index, new_rx_sw_if_index,
561 1 /* pkts */ , n_bytes);
563 if (PREDICT_FALSE (vnet_buffer (b[3])->sw_if_index[VLIB_TX]
564 != new_rx_sw_if_index))
566 config = l2input_intf_config
567 (vnet_buffer (b[3])->sw_if_index[VLIB_TX]);
569 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
570 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
571 new_rx_sw_if_index = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
572 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
574 next[3] = next_index;
575 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
576 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
577 n_bytes = vlib_buffer_length_in_chain (vm, b[3]);
578 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
579 vnet_update_l2_len (b[3]);
581 vlib_increment_combined_counter (im->combined_sw_if_counters +
582 VNET_INTERFACE_COUNTER_TX,
583 thread_index, new_rx_sw_if_index,
584 1 /* pkts */ , n_bytes);
589 while (n_left_from > 0)
591 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
592 != new_rx_sw_if_index))
594 config = l2input_intf_config
595 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
597 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
598 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
599 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
600 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
602 next[0] = next_index;
603 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
604 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
605 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
606 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
607 vnet_update_l2_len (b[0]);
609 vlib_increment_combined_counter (im->combined_sw_if_counters +
610 VNET_INTERFACE_COUNTER_TX,
611 thread_index, new_rx_sw_if_index,
612 1 /* pkts */ , n_bytes);
618 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
620 return frame->n_vectors;
624 format_simulated_ethernet_name (u8 * s, va_list * args)
626 u32 dev_instance = va_arg (*args, u32);
627 return format (s, "loop%d", dev_instance);
630 static clib_error_t *
631 simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
634 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
635 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
636 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
640 static clib_error_t *
641 simulated_ethernet_mac_change (vnet_hw_interface_t * hi,
642 const u8 * old_address, const u8 * mac_address)
644 l2input_interface_mac_change (hi->sw_if_index, old_address, mac_address);
651 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
653 .format_device_name = format_simulated_ethernet_name,
654 .tx_function = simulated_ethernet_interface_tx,
655 .admin_up_down_function = simulated_ethernet_admin_up_down,
656 .mac_addr_change_function = simulated_ethernet_mac_change,
660 VLIB_DEVICE_TX_FUNCTION_MULTIARCH (ethernet_simulated_device_class,
661 simulated_ethernet_interface_tx);
664 * Maintain a bitmap of allocated loopback instance numbers.
666 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
669 loopback_instance_alloc (u8 is_specified, u32 want)
671 ethernet_main_t *em = ðernet_main;
674 * Check for dynamically allocaetd instance number.
680 bit = clib_bitmap_first_clear (em->bm_loopback_instances);
681 if (bit >= LOOPBACK_MAX_INSTANCE)
685 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
693 if (want >= LOOPBACK_MAX_INSTANCE)
701 if (clib_bitmap_get (em->bm_loopback_instances, want))
707 * Grant allocation request.
709 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
716 loopback_instance_free (u32 instance)
718 ethernet_main_t *em = ðernet_main;
720 if (instance >= LOOPBACK_MAX_INSTANCE)
725 if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
730 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
736 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
737 u8 is_specified, u32 user_instance)
739 vnet_main_t *vnm = vnet_get_main ();
740 vlib_main_t *vm = vlib_get_main ();
745 vnet_hw_interface_t *hw_if;
749 ASSERT (sw_if_indexp);
751 *sw_if_indexp = (u32) ~ 0;
753 clib_memset (address, 0, sizeof (address));
756 * Allocate a loopback instance. Either select on dynamically
757 * or try to use the desired user_instance number.
759 instance = loopback_instance_alloc (is_specified, user_instance);
762 return VNET_API_ERROR_INVALID_REGISTRATION;
766 * Default MAC address (dead:0000:0000 + instance) is allocated
767 * if zero mac_address is configured. Otherwise, user-configurable MAC
768 * address is programmed on the loopback interface.
770 if (memcmp (address, mac_address, sizeof (address)))
771 clib_memcpy (address, mac_address, sizeof (address));
776 address[5] = instance;
779 error = ethernet_register_interface
781 ethernet_simulated_device_class.index, instance, address, &hw_if_index,
782 /* flag change */ 0);
786 rv = VNET_API_ERROR_INVALID_REGISTRATION;
787 clib_error_report (error);
791 hw_if = vnet_get_hw_interface (vnm, hw_if_index);
792 slot = vlib_node_add_named_next_with_slot
793 (vm, hw_if->tx_node_index,
794 "ethernet-input", VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
795 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
797 slot = vlib_node_add_named_next_with_slot
798 (vm, hw_if->tx_node_index,
799 "l2-input", VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
800 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
803 vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
804 *sw_if_indexp = si->sw_if_index;
806 /* By default don't flood to loopbacks, as packets just keep
807 * coming back ... If this loopback becomes a BVI, we'll change it */
808 si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD;
814 static clib_error_t *
815 create_simulated_ethernet_interfaces (vlib_main_t * vm,
816 unformat_input_t * input,
817 vlib_cli_command_t * cmd)
823 u32 user_instance = 0;
825 clib_memset (mac_address, 0, sizeof (mac_address));
827 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
829 if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
831 if (unformat (input, "instance %d", &user_instance))
837 rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
838 is_specified, user_instance);
841 return clib_error_return (0, "vnet_create_loopback_interface failed");
843 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
849 * Create a loopback interface. Optionally, a MAC Address can be
850 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
853 * The following two command syntaxes are equivalent:
854 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
855 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
856 * Example of how to create a loopback interface:
857 * @cliexcmd{loopback create-interface}
860 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
861 .path = "loopback create-interface",
862 .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
863 .function = create_simulated_ethernet_interfaces,
868 * Create a loopback interface. Optionally, a MAC Address can be
869 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
872 * The following two command syntaxes are equivalent:
873 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
874 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
875 * Example of how to create a loopback interface:
876 * @cliexcmd{create loopback interface}
879 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
880 .path = "create loopback interface",
881 .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
882 .function = create_simulated_ethernet_interfaces,
886 ethernet_interface_t *
887 ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index)
889 vnet_hw_interface_t *i =
890 vnet_get_hw_interface (vnet_get_main (), hw_if_index);
891 return (i->hw_class_index ==
892 ethernet_hw_interface_class.
893 index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
897 vnet_delete_loopback_interface (u32 sw_if_index)
899 vnet_main_t *vnm = vnet_get_main ();
901 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
902 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
904 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
905 if (hw == 0 || hw->dev_class_index != ethernet_simulated_device_class.index)
906 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
908 if (loopback_instance_free (hw->dev_instance) < 0)
909 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
911 ethernet_delete_interface (vnm, hw->hw_if_index);
917 vnet_delete_sub_interface (u32 sw_if_index)
919 vnet_main_t *vnm = vnet_get_main ();
920 vnet_sw_interface_t *si;
923 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
924 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
926 si = vnet_get_sw_interface (vnm, sw_if_index);
927 if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
928 si->type == VNET_SW_INTERFACE_TYPE_PIPE ||
929 si->type == VNET_SW_INTERFACE_TYPE_P2P)
931 vnet_interface_main_t *im = &vnm->interface_main;
932 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
933 u64 sup_and_sub_key =
934 ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
935 hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
936 hash_unset (hi->sub_interface_sw_if_index_by_id, si->sub.id);
937 vnet_delete_sw_interface (vnm, sw_if_index);
940 rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
945 static clib_error_t *
946 delete_simulated_ethernet_interfaces (vlib_main_t * vm,
947 unformat_input_t * input,
948 vlib_cli_command_t * cmd)
951 u32 sw_if_index = ~0;
952 vnet_main_t *vnm = vnet_get_main ();
954 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
956 if (unformat (input, "intfc %U",
957 unformat_vnet_sw_interface, vnm, &sw_if_index))
963 if (sw_if_index == ~0)
964 return clib_error_return (0, "interface not specified");
966 rv = vnet_delete_loopback_interface (sw_if_index);
969 return clib_error_return (0, "vnet_delete_loopback_interface failed");
974 static clib_error_t *
975 delete_sub_interface (vlib_main_t * vm,
976 unformat_input_t * input, vlib_cli_command_t * cmd)
979 u32 sw_if_index = ~0;
980 vnet_main_t *vnm = vnet_get_main ();
982 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
985 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
990 if (sw_if_index == ~0)
991 return clib_error_return (0, "interface doesn't exist");
993 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
994 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
996 rv = vnet_delete_sub_interface (sw_if_index);
998 return clib_error_return (0, "delete_subinterface_interface failed");
1003 * Delete a loopback interface.
1006 * The following two command syntaxes are equivalent:
1007 * @cliexcmd{loopback delete-interface intfc <interface>}
1008 * @cliexcmd{delete loopback interface intfc <interface>}
1009 * Example of how to delete a loopback interface:
1010 * @cliexcmd{loopback delete-interface intfc loop0}
1013 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
1014 .path = "loopback delete-interface",
1015 .short_help = "loopback delete-interface intfc <interface>",
1016 .function = delete_simulated_ethernet_interfaces,
1021 * Delete a loopback interface.
1024 * The following two command syntaxes are equivalent:
1025 * @cliexcmd{loopback delete-interface intfc <interface>}
1026 * @cliexcmd{delete loopback interface intfc <interface>}
1027 * Example of how to delete a loopback interface:
1028 * @cliexcmd{delete loopback interface intfc loop0}
1031 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
1032 .path = "delete loopback interface",
1033 .short_help = "delete loopback interface intfc <interface>",
1034 .function = delete_simulated_ethernet_interfaces,
1039 * Delete a sub-interface.
1042 * Example of how to delete a sub-interface:
1043 * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
1046 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
1047 .path = "delete sub-interface",
1048 .short_help = "delete sub-interface <interface>",
1049 .function = delete_sub_interface,
1054 * fd.io coding-style-patch-verification: ON
1057 * eval: (c-set-style "gnu")