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/adj/adj.h>
49 * @brief Loopback Interfaces.
51 * This file contains code to manage loopback interfaces.
55 ethernet_ip4_mcast_dst_addr (void)
57 const static u8 ethernet_mcast_dst_mac[] = {
58 0x1, 0x0, 0x5e, 0x0, 0x0, 0x0,
61 return (ethernet_mcast_dst_mac);
65 ethernet_ip6_mcast_dst_addr (void)
67 const static u8 ethernet_mcast_dst_mac[] = {
68 0x33, 0x33, 0x00, 0x0, 0x0, 0x0,
71 return (ethernet_mcast_dst_mac);
75 * @brief build a rewrite string to use for sending packets of type 'link_type'
79 ethernet_build_rewrite (vnet_main_t * vnm,
81 vnet_link_t link_type, const void *dst_address)
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);
86 ethernet_main_t *em = ðernet_main;
87 ethernet_interface_t *ei;
90 uword n_bytes = sizeof (h[0]);
94 if ((sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P) ||
95 (sub_sw->type == VNET_SW_INTERFACE_TYPE_PIPE))
99 if (sub_sw->sub.eth.flags.one_tag)
101 n_bytes += sizeof (ethernet_vlan_header_t);
103 else if (sub_sw->sub.eth.flags.two_tags)
105 n_bytes += 2 * (sizeof (ethernet_vlan_header_t));
107 else if (PREDICT_FALSE (is_p2p))
109 n_bytes = sizeof (ethernet_header_t);
111 if (PREDICT_FALSE (!is_p2p))
113 // Check for encaps that are not supported for L3 interfaces
114 if (!(sub_sw->sub.eth.flags.exact_match) ||
115 (sub_sw->sub.eth.flags.default_sub) ||
116 (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
117 (sub_sw->sub.eth.flags.inner_vlan_id_any))
124 n_bytes = sizeof (ethernet_header_t);
130 #define _(a,b) case VNET_LINK_##a: type = ETHERNET_TYPE_##b; break
140 vec_validate (rewrite, n_bytes - 1);
141 h = (ethernet_header_t *) rewrite;
142 ei = pool_elt_at_index (em->interfaces, hw->hw_instance);
143 clib_memcpy (h->src_address, ei->address, sizeof (h->src_address));
146 clib_memcpy (h->dst_address, sub_sw->p2p.client_mac,
147 sizeof (h->dst_address));
152 clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
154 memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
157 if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag)
159 ethernet_vlan_header_t *outer = (void *) (h + 1);
161 h->type = sub_sw->sub.eth.flags.dot1ad ?
162 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
163 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
164 outer->priority_cfi_and_id =
165 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
166 outer->type = clib_host_to_net_u16 (type);
169 else if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.two_tags)
171 ethernet_vlan_header_t *outer = (void *) (h + 1);
172 ethernet_vlan_header_t *inner = (void *) (outer + 1);
174 h->type = sub_sw->sub.eth.flags.dot1ad ?
175 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
176 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
177 outer->priority_cfi_and_id =
178 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
179 outer->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
180 inner->priority_cfi_and_id =
181 clib_host_to_net_u16 (sub_sw->sub.eth.inner_vlan_id);
182 inner->type = clib_host_to_net_u16 (type);
187 h->type = clib_host_to_net_u16 (type);
194 ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
200 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
201 if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
202 (si->type == VNET_SW_INTERFACE_TYPE_PIPE))
204 default_update_adjacency (vnm, sw_if_index, ai);
206 else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
208 arp_update_adjacency (vnm, sw_if_index, ai);
210 else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto)
212 ip6_ethernet_update_adjacency (vnm, sw_if_index, ai);
220 static clib_error_t *
221 ethernet_mac_change (vnet_hw_interface_t * hi, char *mac_address)
223 ethernet_interface_t *ei;
227 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
229 vec_validate (hi->hw_address,
230 STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1);
231 clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
233 clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
234 ethernet_arp_change_mac (hi->sw_if_index);
235 ethernet_ndp_change_mac (hi->sw_if_index);
241 VNET_HW_INTERFACE_CLASS (ethernet_hw_interface_class) = {
243 .format_address = format_ethernet_address,
244 .format_header = format_ethernet_header_with_length,
245 .unformat_hw_address = unformat_ethernet_address,
246 .unformat_header = unformat_ethernet_header,
247 .build_rewrite = ethernet_build_rewrite,
248 .update_adjacency = ethernet_update_adjacency,
249 .mac_addr_change_function = ethernet_mac_change,
254 unformat_ethernet_interface (unformat_input_t * input, va_list * args)
256 vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
257 u32 *result = va_arg (*args, u32 *);
259 ethernet_main_t *em = ðernet_main;
260 ethernet_interface_t *eif;
262 if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
265 eif = ethernet_get_interface (em, hw_if_index);
268 *result = hw_if_index;
275 ethernet_register_interface (vnet_main_t * vnm,
279 u32 * hw_if_index_return,
280 ethernet_flag_change_function_t flag_change)
282 ethernet_main_t *em = ðernet_main;
283 ethernet_interface_t *ei;
284 vnet_hw_interface_t *hi;
285 clib_error_t *error = 0;
288 pool_get (em->interfaces, ei);
289 ei->flag_change = flag_change;
291 hw_if_index = vnet_register_interface
293 dev_class_index, dev_instance,
294 ethernet_hw_interface_class.index, ei - em->interfaces);
295 *hw_if_index_return = hw_if_index;
297 hi = vnet_get_hw_interface (vnm, hw_if_index);
299 ethernet_setup_node (vnm->vlib_main, hi->output_node_index);
301 hi->min_packet_bytes = hi->min_supported_packet_bytes =
302 ETHERNET_MIN_PACKET_BYTES;
303 hi->max_packet_bytes = hi->max_supported_packet_bytes =
304 ETHERNET_MAX_PACKET_BYTES;
306 /* Standard default ethernet MTU. */
307 vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, 9000);
309 clib_memcpy (ei->address, address, sizeof (ei->address));
310 vec_add (hi->hw_address, address, sizeof (ei->address));
314 pool_put (em->interfaces, ei);
321 ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index)
323 ethernet_main_t *em = ðernet_main;
324 ethernet_interface_t *ei;
325 vnet_hw_interface_t *hi;
326 main_intf_t *main_intf;
327 vlan_table_t *vlan_table;
330 hi = vnet_get_hw_interface (vnm, hw_if_index);
331 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
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)
337 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
338 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
340 if (vlan_table->vlans[idx].qinqs)
342 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
345 pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
346 main_intf->dot1q_vlans = 0;
348 if (main_intf->dot1ad_vlans)
350 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
351 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
353 if (vlan_table->vlans[idx].qinqs)
355 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
358 pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
359 main_intf->dot1ad_vlans = 0;
362 vnet_delete_hw_interface (vnm, hw_if_index);
363 pool_put (em->interfaces, ei);
367 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
369 ethernet_main_t *em = ðernet_main;
370 vnet_hw_interface_t *hi;
371 ethernet_interface_t *ei;
373 hi = vnet_get_hw_interface (vnm, hw_if_index);
375 ASSERT (hi->hw_class_index == ethernet_hw_interface_class.index);
377 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
379 return ei->flag_change (vnm, hi, flags);
384 * Echo packets back to ethernet/l2-input.
387 simulated_ethernet_interface_tx (vlib_main_t * vm,
388 vlib_node_runtime_t *
389 node, vlib_frame_t * frame)
391 u32 n_left_from, *from;
394 u32 thread_index = vm->thread_index;
395 vnet_main_t *vnm = vnet_get_main ();
396 vnet_interface_main_t *im = &vnm->interface_main;
397 l2_input_config_t *config;
398 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
399 u16 nexts[VLIB_FRAME_SIZE], *next;
400 u32 new_rx_sw_if_index = ~0;
401 u32 new_tx_sw_if_index = ~0;
403 n_left_from = frame->n_vectors;
404 from = vlib_frame_args (frame);
406 vlib_get_buffers (vm, from, bufs, n_left_from);
410 /* Ordinarily, this is the only config lookup. */
411 config = l2input_intf_config (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
413 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
414 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
415 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
416 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
418 while (n_left_from >= 4)
420 u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
421 u32 not_all_match_config;
423 /* Prefetch next iteration. */
424 if (PREDICT_TRUE (n_left_from >= 8))
426 vlib_prefetch_buffer_header (b[4], STORE);
427 vlib_prefetch_buffer_header (b[5], STORE);
428 vlib_prefetch_buffer_header (b[6], STORE);
429 vlib_prefetch_buffer_header (b[7], STORE);
432 /* Make sure all pkts were transmitted on the same (loop) intfc */
433 sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
434 sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
435 sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
436 sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
438 not_all_match_config = (sw_if_index0 ^ sw_if_index1)
439 ^ (sw_if_index2 ^ sw_if_index3);
440 not_all_match_config += sw_if_index0 ^ new_rx_sw_if_index;
442 /* Speed path / expected case: all pkts on the same intfc */
443 if (PREDICT_TRUE (not_all_match_config == 0))
445 next[0] = next_index;
446 next[1] = next_index;
447 next[2] = next_index;
448 next[3] = next_index;
449 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
450 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
451 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
452 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
453 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
454 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
455 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
456 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
457 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
458 n_bytes += vlib_buffer_length_in_chain (vm, b[1]);
459 n_bytes += vlib_buffer_length_in_chain (vm, b[2]);
460 n_bytes += vlib_buffer_length_in_chain (vm, b[3]);
462 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
464 vnet_update_l2_len (b[0]);
465 vnet_update_l2_len (b[1]);
466 vnet_update_l2_len (b[2]);
467 vnet_update_l2_len (b[3]);
470 /* increment TX interface stat */
471 vlib_increment_combined_counter (im->combined_sw_if_counters +
472 VNET_INTERFACE_COUNTER_TX,
473 thread_index, new_rx_sw_if_index,
474 4 /* pkts */ , n_bytes);
482 * Slow path: we know that at least one of the pkts
483 * was transmitted on a different sw_if_index, so
484 * check each sw_if_index against the cached data and proceed
487 * This shouldn't happen, but code can (and does) bypass the
488 * per-interface output node, so deal with it.
490 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
491 != new_rx_sw_if_index))
493 config = l2input_intf_config
494 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
496 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
497 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
498 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
499 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
501 next[0] = next_index;
502 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
503 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
504 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
505 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
506 vnet_update_l2_len (b[0]);
508 vlib_increment_combined_counter (im->combined_sw_if_counters +
509 VNET_INTERFACE_COUNTER_TX,
510 thread_index, new_rx_sw_if_index,
511 1 /* pkts */ , n_bytes);
513 if (PREDICT_FALSE (vnet_buffer (b[1])->sw_if_index[VLIB_TX]
514 != new_rx_sw_if_index))
516 config = l2input_intf_config
517 (vnet_buffer (b[1])->sw_if_index[VLIB_TX]);
519 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
520 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
521 new_rx_sw_if_index = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
522 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
524 next[1] = next_index;
525 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
526 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
527 n_bytes = vlib_buffer_length_in_chain (vm, b[1]);
528 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
529 vnet_update_l2_len (b[1]);
531 vlib_increment_combined_counter (im->combined_sw_if_counters +
532 VNET_INTERFACE_COUNTER_TX,
533 thread_index, new_rx_sw_if_index,
534 1 /* pkts */ , n_bytes);
536 if (PREDICT_FALSE (vnet_buffer (b[2])->sw_if_index[VLIB_TX]
537 != new_rx_sw_if_index))
539 config = l2input_intf_config
540 (vnet_buffer (b[2])->sw_if_index[VLIB_TX]);
542 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
543 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
544 new_rx_sw_if_index = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
545 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
547 next[2] = next_index;
548 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
549 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
550 n_bytes = vlib_buffer_length_in_chain (vm, b[2]);
551 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
552 vnet_update_l2_len (b[2]);
554 vlib_increment_combined_counter (im->combined_sw_if_counters +
555 VNET_INTERFACE_COUNTER_TX,
556 thread_index, new_rx_sw_if_index,
557 1 /* pkts */ , n_bytes);
559 if (PREDICT_FALSE (vnet_buffer (b[3])->sw_if_index[VLIB_TX]
560 != new_rx_sw_if_index))
562 config = l2input_intf_config
563 (vnet_buffer (b[3])->sw_if_index[VLIB_TX]);
565 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
566 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
567 new_rx_sw_if_index = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
568 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
570 next[3] = next_index;
571 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
572 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
573 n_bytes = vlib_buffer_length_in_chain (vm, b[3]);
574 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
575 vnet_update_l2_len (b[3]);
577 vlib_increment_combined_counter (im->combined_sw_if_counters +
578 VNET_INTERFACE_COUNTER_TX,
579 thread_index, new_rx_sw_if_index,
580 1 /* pkts */ , n_bytes);
585 while (n_left_from > 0)
587 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
588 != new_rx_sw_if_index))
590 config = l2input_intf_config
591 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
593 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
594 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
595 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
596 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
598 next[0] = next_index;
599 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
600 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
601 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
602 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
603 vnet_update_l2_len (b[0]);
605 vlib_increment_combined_counter (im->combined_sw_if_counters +
606 VNET_INTERFACE_COUNTER_TX,
607 thread_index, new_rx_sw_if_index,
608 1 /* pkts */ , n_bytes);
614 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
616 return frame->n_vectors;
620 format_simulated_ethernet_name (u8 * s, va_list * args)
622 u32 dev_instance = va_arg (*args, u32);
623 return format (s, "loop%d", dev_instance);
626 static clib_error_t *
627 simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
630 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
631 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
632 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
637 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
639 .format_device_name = format_simulated_ethernet_name,
640 .tx_function = simulated_ethernet_interface_tx,
641 .admin_up_down_function = simulated_ethernet_admin_up_down,
645 VLIB_DEVICE_TX_FUNCTION_MULTIARCH (ethernet_simulated_device_class,
646 simulated_ethernet_interface_tx);
649 * Maintain a bitmap of allocated loopback instance numbers.
651 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
654 loopback_instance_alloc (u8 is_specified, u32 want)
656 ethernet_main_t *em = ðernet_main;
659 * Check for dynamically allocaetd instance number.
665 bit = clib_bitmap_first_clear (em->bm_loopback_instances);
666 if (bit >= LOOPBACK_MAX_INSTANCE)
670 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
678 if (want >= LOOPBACK_MAX_INSTANCE)
686 if (clib_bitmap_get (em->bm_loopback_instances, want))
692 * Grant allocation request.
694 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
701 loopback_instance_free (u32 instance)
703 ethernet_main_t *em = ðernet_main;
705 if (instance >= LOOPBACK_MAX_INSTANCE)
710 if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
715 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
721 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
722 u8 is_specified, u32 user_instance)
724 vnet_main_t *vnm = vnet_get_main ();
725 vlib_main_t *vm = vlib_get_main ();
730 vnet_hw_interface_t *hw_if;
734 ASSERT (sw_if_indexp);
736 *sw_if_indexp = (u32) ~ 0;
738 memset (address, 0, sizeof (address));
741 * Allocate a loopback instance. Either select on dynamically
742 * or try to use the desired user_instance number.
744 instance = loopback_instance_alloc (is_specified, user_instance);
747 return VNET_API_ERROR_INVALID_REGISTRATION;
751 * Default MAC address (dead:0000:0000 + instance) is allocated
752 * if zero mac_address is configured. Otherwise, user-configurable MAC
753 * address is programmed on the loopback interface.
755 if (memcmp (address, mac_address, sizeof (address)))
756 clib_memcpy (address, mac_address, sizeof (address));
761 address[5] = instance;
764 error = ethernet_register_interface
766 ethernet_simulated_device_class.index, instance, address, &hw_if_index,
767 /* flag change */ 0);
771 rv = VNET_API_ERROR_INVALID_REGISTRATION;
772 clib_error_report (error);
776 hw_if = vnet_get_hw_interface (vnm, hw_if_index);
777 slot = vlib_node_add_named_next_with_slot
778 (vm, hw_if->tx_node_index,
779 "ethernet-input", VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
780 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
782 slot = vlib_node_add_named_next_with_slot
783 (vm, hw_if->tx_node_index,
784 "l2-input", VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
785 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
788 vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
789 *sw_if_indexp = si->sw_if_index;
791 /* By default don't flood to loopbacks, as packets just keep
792 * coming back ... If this loopback becomes a BVI, we'll change it */
793 si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD;
799 static clib_error_t *
800 create_simulated_ethernet_interfaces (vlib_main_t * vm,
801 unformat_input_t * input,
802 vlib_cli_command_t * cmd)
808 u32 user_instance = 0;
810 memset (mac_address, 0, sizeof (mac_address));
812 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
814 if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
816 if (unformat (input, "instance %d", &user_instance))
822 rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
823 is_specified, user_instance);
826 return clib_error_return (0, "vnet_create_loopback_interface failed");
828 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
834 * Create a loopback interface. Optionally, a MAC Address can be
835 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
838 * The following two command syntaxes are equivalent:
839 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
840 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
841 * Example of how to create a loopback interface:
842 * @cliexcmd{loopback create-interface}
845 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
846 .path = "loopback create-interface",
847 .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
848 .function = create_simulated_ethernet_interfaces,
853 * Create a loopback interface. Optionally, a MAC Address can be
854 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
857 * The following two command syntaxes are equivalent:
858 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
859 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
860 * Example of how to create a loopback interface:
861 * @cliexcmd{create loopback interface}
864 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
865 .path = "create loopback interface",
866 .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
867 .function = create_simulated_ethernet_interfaces,
871 ethernet_interface_t *
872 ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index)
874 vnet_hw_interface_t *i =
875 vnet_get_hw_interface (vnet_get_main (), hw_if_index);
876 return (i->hw_class_index ==
877 ethernet_hw_interface_class.
878 index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
882 vnet_delete_loopback_interface (u32 sw_if_index)
884 vnet_main_t *vnm = vnet_get_main ();
886 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
887 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
889 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
890 if (hw == 0 || hw->dev_class_index != ethernet_simulated_device_class.index)
891 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
893 if (loopback_instance_free (hw->dev_instance) < 0)
894 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
896 ethernet_delete_interface (vnm, hw->hw_if_index);
902 vnet_delete_sub_interface (u32 sw_if_index)
904 vnet_main_t *vnm = vnet_get_main ();
905 vnet_sw_interface_t *si;
908 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
909 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
911 si = vnet_get_sw_interface (vnm, sw_if_index);
912 if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
913 si->type == VNET_SW_INTERFACE_TYPE_PIPE ||
914 si->type == VNET_SW_INTERFACE_TYPE_P2P)
916 vnet_interface_main_t *im = &vnm->interface_main;
917 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
918 u64 sup_and_sub_key =
919 ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
920 hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
921 hash_unset (hi->sub_interface_sw_if_index_by_id, si->sub.id);
922 vnet_delete_sw_interface (vnm, sw_if_index);
925 rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
930 static clib_error_t *
931 delete_simulated_ethernet_interfaces (vlib_main_t * vm,
932 unformat_input_t * input,
933 vlib_cli_command_t * cmd)
936 u32 sw_if_index = ~0;
937 vnet_main_t *vnm = vnet_get_main ();
939 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
941 if (unformat (input, "intfc %U",
942 unformat_vnet_sw_interface, vnm, &sw_if_index))
948 if (sw_if_index == ~0)
949 return clib_error_return (0, "interface not specified");
951 rv = vnet_delete_loopback_interface (sw_if_index);
954 return clib_error_return (0, "vnet_delete_loopback_interface failed");
959 static clib_error_t *
960 delete_sub_interface (vlib_main_t * vm,
961 unformat_input_t * input, vlib_cli_command_t * cmd)
964 u32 sw_if_index = ~0;
965 vnet_main_t *vnm = vnet_get_main ();
967 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
970 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
975 if (sw_if_index == ~0)
976 return clib_error_return (0, "interface doesn't exist");
978 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
979 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
981 rv = vnet_delete_sub_interface (sw_if_index);
983 return clib_error_return (0, "delete_subinterface_interface failed");
988 * Delete a loopback interface.
991 * The following two command syntaxes are equivalent:
992 * @cliexcmd{loopback delete-interface intfc <interface>}
993 * @cliexcmd{delete loopback interface intfc <interface>}
994 * Example of how to delete a loopback interface:
995 * @cliexcmd{loopback delete-interface intfc loop0}
998 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
999 .path = "loopback delete-interface",
1000 .short_help = "loopback delete-interface intfc <interface>",
1001 .function = delete_simulated_ethernet_interfaces,
1006 * Delete a loopback interface.
1009 * The following two command syntaxes are equivalent:
1010 * @cliexcmd{loopback delete-interface intfc <interface>}
1011 * @cliexcmd{delete loopback interface intfc <interface>}
1012 * Example of how to delete a loopback interface:
1013 * @cliexcmd{delete loopback interface intfc loop0}
1016 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
1017 .path = "delete loopback interface",
1018 .short_help = "delete loopback interface intfc <interface>",
1019 .function = delete_simulated_ethernet_interfaces,
1024 * Delete a sub-interface.
1027 * Example of how to delete a sub-interface:
1028 * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
1031 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
1032 .path = "delete sub-interface",
1033 .short_help = "delete sub-interface <interface>",
1034 .function = delete_sub_interface,
1039 * fd.io coding-style-patch-verification: ON
1042 * eval: (c-set-style "gnu")