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 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);
347 pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
348 main_intf->dot1q_vlans = 0;
350 if (main_intf->dot1ad_vlans)
352 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
353 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
355 if (vlan_table->vlans[idx].qinqs)
357 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
360 pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
361 main_intf->dot1ad_vlans = 0;
364 vnet_delete_hw_interface (vnm, hw_if_index);
365 pool_put (em->interfaces, ei);
369 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
371 ethernet_main_t *em = ðernet_main;
372 vnet_hw_interface_t *hi;
373 ethernet_interface_t *ei;
375 hi = vnet_get_hw_interface (vnm, hw_if_index);
377 ASSERT (hi->hw_class_index == ethernet_hw_interface_class.index);
379 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
381 return ei->flag_change (vnm, hi, flags);
386 * Echo packets back to ethernet/l2-input.
389 simulated_ethernet_interface_tx (vlib_main_t * vm,
390 vlib_node_runtime_t *
391 node, vlib_frame_t * frame)
393 u32 n_left_from, *from;
396 u32 thread_index = vm->thread_index;
397 vnet_main_t *vnm = vnet_get_main ();
398 vnet_interface_main_t *im = &vnm->interface_main;
399 l2_input_config_t *config;
400 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
401 u16 nexts[VLIB_FRAME_SIZE], *next;
402 u32 new_rx_sw_if_index = ~0;
403 u32 new_tx_sw_if_index = ~0;
405 n_left_from = frame->n_vectors;
406 from = vlib_frame_args (frame);
408 vlib_get_buffers (vm, from, bufs, n_left_from);
412 /* Ordinarily, this is the only config lookup. */
413 config = l2input_intf_config (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
415 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
416 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
417 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
418 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
420 while (n_left_from >= 4)
422 u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
423 u32 not_all_match_config;
425 /* Prefetch next iteration. */
426 if (PREDICT_TRUE (n_left_from >= 8))
428 vlib_prefetch_buffer_header (b[4], STORE);
429 vlib_prefetch_buffer_header (b[5], STORE);
430 vlib_prefetch_buffer_header (b[6], STORE);
431 vlib_prefetch_buffer_header (b[7], STORE);
434 /* Make sure all pkts were transmitted on the same (loop) intfc */
435 sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
436 sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
437 sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
438 sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
440 not_all_match_config = (sw_if_index0 ^ sw_if_index1)
441 ^ (sw_if_index2 ^ sw_if_index3);
442 not_all_match_config += sw_if_index0 ^ new_rx_sw_if_index;
444 /* Speed path / expected case: all pkts on the same intfc */
445 if (PREDICT_TRUE (not_all_match_config == 0))
447 next[0] = next_index;
448 next[1] = next_index;
449 next[2] = next_index;
450 next[3] = next_index;
451 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
452 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
453 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
454 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
455 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
456 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
457 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
458 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
459 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
460 n_bytes += vlib_buffer_length_in_chain (vm, b[1]);
461 n_bytes += vlib_buffer_length_in_chain (vm, b[2]);
462 n_bytes += vlib_buffer_length_in_chain (vm, b[3]);
464 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
466 vnet_update_l2_len (b[0]);
467 vnet_update_l2_len (b[1]);
468 vnet_update_l2_len (b[2]);
469 vnet_update_l2_len (b[3]);
472 /* increment TX interface stat */
473 vlib_increment_combined_counter (im->combined_sw_if_counters +
474 VNET_INTERFACE_COUNTER_TX,
475 thread_index, new_rx_sw_if_index,
476 4 /* pkts */ , n_bytes);
484 * Slow path: we know that at least one of the pkts
485 * was transmitted on a different sw_if_index, so
486 * check each sw_if_index against the cached data and proceed
489 * This shouldn't happen, but code can (and does) bypass the
490 * per-interface output node, so deal with it.
492 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
493 != new_rx_sw_if_index))
495 config = l2input_intf_config
496 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
498 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
499 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
500 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
501 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
503 next[0] = next_index;
504 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
505 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
506 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
507 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
508 vnet_update_l2_len (b[0]);
510 vlib_increment_combined_counter (im->combined_sw_if_counters +
511 VNET_INTERFACE_COUNTER_TX,
512 thread_index, new_rx_sw_if_index,
513 1 /* pkts */ , n_bytes);
515 if (PREDICT_FALSE (vnet_buffer (b[1])->sw_if_index[VLIB_TX]
516 != new_rx_sw_if_index))
518 config = l2input_intf_config
519 (vnet_buffer (b[1])->sw_if_index[VLIB_TX]);
521 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
522 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
523 new_rx_sw_if_index = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
524 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
526 next[1] = next_index;
527 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
528 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
529 n_bytes = vlib_buffer_length_in_chain (vm, b[1]);
530 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
531 vnet_update_l2_len (b[1]);
533 vlib_increment_combined_counter (im->combined_sw_if_counters +
534 VNET_INTERFACE_COUNTER_TX,
535 thread_index, new_rx_sw_if_index,
536 1 /* pkts */ , n_bytes);
538 if (PREDICT_FALSE (vnet_buffer (b[2])->sw_if_index[VLIB_TX]
539 != new_rx_sw_if_index))
541 config = l2input_intf_config
542 (vnet_buffer (b[2])->sw_if_index[VLIB_TX]);
544 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
545 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
546 new_rx_sw_if_index = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
547 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
549 next[2] = next_index;
550 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
551 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
552 n_bytes = vlib_buffer_length_in_chain (vm, b[2]);
553 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
554 vnet_update_l2_len (b[2]);
556 vlib_increment_combined_counter (im->combined_sw_if_counters +
557 VNET_INTERFACE_COUNTER_TX,
558 thread_index, new_rx_sw_if_index,
559 1 /* pkts */ , n_bytes);
561 if (PREDICT_FALSE (vnet_buffer (b[3])->sw_if_index[VLIB_TX]
562 != new_rx_sw_if_index))
564 config = l2input_intf_config
565 (vnet_buffer (b[3])->sw_if_index[VLIB_TX]);
567 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
568 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
569 new_rx_sw_if_index = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
570 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
572 next[3] = next_index;
573 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
574 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
575 n_bytes = vlib_buffer_length_in_chain (vm, b[3]);
576 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
577 vnet_update_l2_len (b[3]);
579 vlib_increment_combined_counter (im->combined_sw_if_counters +
580 VNET_INTERFACE_COUNTER_TX,
581 thread_index, new_rx_sw_if_index,
582 1 /* pkts */ , n_bytes);
587 while (n_left_from > 0)
589 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
590 != new_rx_sw_if_index))
592 config = l2input_intf_config
593 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
595 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
596 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
597 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
598 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
600 next[0] = next_index;
601 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
602 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
603 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
604 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
605 vnet_update_l2_len (b[0]);
607 vlib_increment_combined_counter (im->combined_sw_if_counters +
608 VNET_INTERFACE_COUNTER_TX,
609 thread_index, new_rx_sw_if_index,
610 1 /* pkts */ , n_bytes);
616 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
618 return frame->n_vectors;
622 format_simulated_ethernet_name (u8 * s, va_list * args)
624 u32 dev_instance = va_arg (*args, u32);
625 return format (s, "loop%d", dev_instance);
628 static clib_error_t *
629 simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
632 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
633 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
634 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
638 static clib_error_t *
639 simulated_ethernet_mac_change (vnet_hw_interface_t * hi,
640 const u8 * old_address, const u8 * mac_address)
642 l2input_interface_mac_change (hi->sw_if_index, old_address, mac_address);
649 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
651 .format_device_name = format_simulated_ethernet_name,
652 .tx_function = simulated_ethernet_interface_tx,
653 .admin_up_down_function = simulated_ethernet_admin_up_down,
654 .mac_addr_change_function = simulated_ethernet_mac_change,
658 VLIB_DEVICE_TX_FUNCTION_MULTIARCH (ethernet_simulated_device_class,
659 simulated_ethernet_interface_tx);
662 * Maintain a bitmap of allocated loopback instance numbers.
664 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
667 loopback_instance_alloc (u8 is_specified, u32 want)
669 ethernet_main_t *em = ðernet_main;
672 * Check for dynamically allocaetd instance number.
678 bit = clib_bitmap_first_clear (em->bm_loopback_instances);
679 if (bit >= LOOPBACK_MAX_INSTANCE)
683 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
691 if (want >= LOOPBACK_MAX_INSTANCE)
699 if (clib_bitmap_get (em->bm_loopback_instances, want))
705 * Grant allocation request.
707 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
714 loopback_instance_free (u32 instance)
716 ethernet_main_t *em = ðernet_main;
718 if (instance >= LOOPBACK_MAX_INSTANCE)
723 if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
728 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
734 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
735 u8 is_specified, u32 user_instance)
737 vnet_main_t *vnm = vnet_get_main ();
738 vlib_main_t *vm = vlib_get_main ();
743 vnet_hw_interface_t *hw_if;
747 ASSERT (sw_if_indexp);
749 *sw_if_indexp = (u32) ~ 0;
751 memset (address, 0, sizeof (address));
754 * Allocate a loopback instance. Either select on dynamically
755 * or try to use the desired user_instance number.
757 instance = loopback_instance_alloc (is_specified, user_instance);
760 return VNET_API_ERROR_INVALID_REGISTRATION;
764 * Default MAC address (dead:0000:0000 + instance) is allocated
765 * if zero mac_address is configured. Otherwise, user-configurable MAC
766 * address is programmed on the loopback interface.
768 if (memcmp (address, mac_address, sizeof (address)))
769 clib_memcpy (address, mac_address, sizeof (address));
774 address[5] = instance;
777 error = ethernet_register_interface
779 ethernet_simulated_device_class.index, instance, address, &hw_if_index,
780 /* flag change */ 0);
784 rv = VNET_API_ERROR_INVALID_REGISTRATION;
785 clib_error_report (error);
789 hw_if = vnet_get_hw_interface (vnm, hw_if_index);
790 slot = vlib_node_add_named_next_with_slot
791 (vm, hw_if->tx_node_index,
792 "ethernet-input", VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
793 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
795 slot = vlib_node_add_named_next_with_slot
796 (vm, hw_if->tx_node_index,
797 "l2-input", VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
798 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
801 vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
802 *sw_if_indexp = si->sw_if_index;
804 /* By default don't flood to loopbacks, as packets just keep
805 * coming back ... If this loopback becomes a BVI, we'll change it */
806 si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD;
812 static clib_error_t *
813 create_simulated_ethernet_interfaces (vlib_main_t * vm,
814 unformat_input_t * input,
815 vlib_cli_command_t * cmd)
821 u32 user_instance = 0;
823 memset (mac_address, 0, sizeof (mac_address));
825 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
827 if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
829 if (unformat (input, "instance %d", &user_instance))
835 rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
836 is_specified, user_instance);
839 return clib_error_return (0, "vnet_create_loopback_interface failed");
841 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
847 * Create a loopback interface. Optionally, a MAC Address can be
848 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
851 * The following two command syntaxes are equivalent:
852 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
853 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
854 * Example of how to create a loopback interface:
855 * @cliexcmd{loopback create-interface}
858 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
859 .path = "loopback create-interface",
860 .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
861 .function = create_simulated_ethernet_interfaces,
866 * Create a loopback interface. Optionally, a MAC Address can be
867 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
870 * The following two command syntaxes are equivalent:
871 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
872 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
873 * Example of how to create a loopback interface:
874 * @cliexcmd{create loopback interface}
877 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
878 .path = "create loopback interface",
879 .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
880 .function = create_simulated_ethernet_interfaces,
884 ethernet_interface_t *
885 ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index)
887 vnet_hw_interface_t *i =
888 vnet_get_hw_interface (vnet_get_main (), hw_if_index);
889 return (i->hw_class_index ==
890 ethernet_hw_interface_class.
891 index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
895 vnet_delete_loopback_interface (u32 sw_if_index)
897 vnet_main_t *vnm = vnet_get_main ();
899 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
900 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
902 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
903 if (hw == 0 || hw->dev_class_index != ethernet_simulated_device_class.index)
904 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
906 if (loopback_instance_free (hw->dev_instance) < 0)
907 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
909 ethernet_delete_interface (vnm, hw->hw_if_index);
915 vnet_delete_sub_interface (u32 sw_if_index)
917 vnet_main_t *vnm = vnet_get_main ();
918 vnet_sw_interface_t *si;
921 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
922 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
924 si = vnet_get_sw_interface (vnm, sw_if_index);
925 if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
926 si->type == VNET_SW_INTERFACE_TYPE_PIPE ||
927 si->type == VNET_SW_INTERFACE_TYPE_P2P)
929 vnet_interface_main_t *im = &vnm->interface_main;
930 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
931 u64 sup_and_sub_key =
932 ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
933 hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
934 hash_unset (hi->sub_interface_sw_if_index_by_id, si->sub.id);
935 vnet_delete_sw_interface (vnm, sw_if_index);
938 rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
943 static clib_error_t *
944 delete_simulated_ethernet_interfaces (vlib_main_t * vm,
945 unformat_input_t * input,
946 vlib_cli_command_t * cmd)
949 u32 sw_if_index = ~0;
950 vnet_main_t *vnm = vnet_get_main ();
952 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
954 if (unformat (input, "intfc %U",
955 unformat_vnet_sw_interface, vnm, &sw_if_index))
961 if (sw_if_index == ~0)
962 return clib_error_return (0, "interface not specified");
964 rv = vnet_delete_loopback_interface (sw_if_index);
967 return clib_error_return (0, "vnet_delete_loopback_interface failed");
972 static clib_error_t *
973 delete_sub_interface (vlib_main_t * vm,
974 unformat_input_t * input, vlib_cli_command_t * cmd)
977 u32 sw_if_index = ~0;
978 vnet_main_t *vnm = vnet_get_main ();
980 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
983 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
988 if (sw_if_index == ~0)
989 return clib_error_return (0, "interface doesn't exist");
991 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
992 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
994 rv = vnet_delete_sub_interface (sw_if_index);
996 return clib_error_return (0, "delete_subinterface_interface failed");
1001 * Delete a loopback interface.
1004 * The following two command syntaxes are equivalent:
1005 * @cliexcmd{loopback delete-interface intfc <interface>}
1006 * @cliexcmd{delete loopback interface intfc <interface>}
1007 * Example of how to delete a loopback interface:
1008 * @cliexcmd{loopback delete-interface intfc loop0}
1011 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
1012 .path = "loopback delete-interface",
1013 .short_help = "loopback delete-interface intfc <interface>",
1014 .function = delete_simulated_ethernet_interfaces,
1019 * Delete a loopback interface.
1022 * The following two command syntaxes are equivalent:
1023 * @cliexcmd{loopback delete-interface intfc <interface>}
1024 * @cliexcmd{delete loopback interface intfc <interface>}
1025 * Example of how to delete a loopback interface:
1026 * @cliexcmd{delete loopback interface intfc loop0}
1029 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
1030 .path = "delete loopback interface",
1031 .short_help = "delete loopback interface intfc <interface>",
1032 .function = delete_simulated_ethernet_interfaces,
1037 * Delete a sub-interface.
1040 * Example of how to delete a sub-interface:
1041 * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
1044 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
1045 .path = "delete sub-interface",
1046 .short_help = "delete sub-interface <interface>",
1047 .function = delete_sub_interface,
1052 * fd.io coding-style-patch-verification: ON
1055 * eval: (c-set-style "gnu")