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/ethernet/arp.h>
45 #include <vnet/l2/l2_input.h>
46 #include <vnet/l2/l2_bd.h>
47 #include <vnet/adj/adj.h>
51 * @brief Loopback Interfaces.
53 * This file contains code to manage loopback interfaces.
57 ethernet_ip4_mcast_dst_addr (void)
59 const static u8 ethernet_mcast_dst_mac[] = {
60 0x1, 0x0, 0x5e, 0x0, 0x0, 0x0,
63 return (ethernet_mcast_dst_mac);
67 ethernet_ip6_mcast_dst_addr (void)
69 const static u8 ethernet_mcast_dst_mac[] = {
70 0x33, 0x33, 0x00, 0x0, 0x0, 0x0,
73 return (ethernet_mcast_dst_mac);
77 * @brief build a rewrite string to use for sending packets of type 'link_type'
81 ethernet_build_rewrite (vnet_main_t * vnm,
83 vnet_link_t link_type, const void *dst_address)
85 vnet_sw_interface_t *sub_sw = vnet_get_sw_interface (vnm, sw_if_index);
86 vnet_sw_interface_t *sup_sw = vnet_get_sup_sw_interface (vnm, sw_if_index);
87 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
88 ethernet_main_t *em = ðernet_main;
89 ethernet_interface_t *ei;
92 uword n_bytes = sizeof (h[0]);
96 if ((sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P) ||
97 (sub_sw->type == VNET_SW_INTERFACE_TYPE_PIPE))
101 if (sub_sw->sub.eth.flags.one_tag)
103 n_bytes += sizeof (ethernet_vlan_header_t);
105 else if (sub_sw->sub.eth.flags.two_tags)
107 n_bytes += 2 * (sizeof (ethernet_vlan_header_t));
109 else if (PREDICT_FALSE (is_p2p))
111 n_bytes = sizeof (ethernet_header_t);
113 if (PREDICT_FALSE (!is_p2p))
115 // Check for encaps that are not supported for L3 interfaces
116 if (!(sub_sw->sub.eth.flags.exact_match) ||
117 (sub_sw->sub.eth.flags.default_sub) ||
118 (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
119 (sub_sw->sub.eth.flags.inner_vlan_id_any))
126 n_bytes = sizeof (ethernet_header_t);
132 #define _(a,b) case VNET_LINK_##a: type = ETHERNET_TYPE_##b; break
142 vec_validate (rewrite, n_bytes - 1);
143 h = (ethernet_header_t *) rewrite;
144 ei = pool_elt_at_index (em->interfaces, hw->hw_instance);
145 clib_memcpy (h->src_address, ei->address, sizeof (h->src_address));
148 clib_memcpy (h->dst_address, sub_sw->p2p.client_mac,
149 sizeof (h->dst_address));
154 clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
156 clib_memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
159 if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag)
161 ethernet_vlan_header_t *outer = (void *) (h + 1);
163 h->type = sub_sw->sub.eth.flags.dot1ad ?
164 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
165 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
166 outer->priority_cfi_and_id =
167 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
168 outer->type = clib_host_to_net_u16 (type);
171 else if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.two_tags)
173 ethernet_vlan_header_t *outer = (void *) (h + 1);
174 ethernet_vlan_header_t *inner = (void *) (outer + 1);
176 h->type = sub_sw->sub.eth.flags.dot1ad ?
177 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
178 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
179 outer->priority_cfi_and_id =
180 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
181 outer->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
182 inner->priority_cfi_and_id =
183 clib_host_to_net_u16 (sub_sw->sub.eth.inner_vlan_id);
184 inner->type = clib_host_to_net_u16 (type);
189 h->type = clib_host_to_net_u16 (type);
196 ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
202 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
203 if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
204 (si->type == VNET_SW_INTERFACE_TYPE_PIPE))
206 default_update_adjacency (vnm, sw_if_index, ai);
208 else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
210 arp_update_adjacency (vnm, sw_if_index, ai);
212 else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto)
214 ip6_ethernet_update_adjacency (vnm, sw_if_index, ai);
222 static clib_error_t *
223 ethernet_mac_change (vnet_hw_interface_t * hi,
224 const u8 * old_address, const u8 * mac_address)
226 ethernet_interface_t *ei;
230 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
232 vec_validate (hi->hw_address,
233 STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1);
234 clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
236 clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
237 ethernet_arp_change_mac (hi->sw_if_index);
238 ethernet_ndp_change_mac (hi->sw_if_index);
244 VNET_HW_INTERFACE_CLASS (ethernet_hw_interface_class) = {
246 .format_address = format_ethernet_address,
247 .format_header = format_ethernet_header_with_length,
248 .unformat_hw_address = unformat_ethernet_address,
249 .unformat_header = unformat_ethernet_header,
250 .build_rewrite = ethernet_build_rewrite,
251 .update_adjacency = ethernet_update_adjacency,
252 .mac_addr_change_function = ethernet_mac_change,
257 unformat_ethernet_interface (unformat_input_t * input, va_list * args)
259 vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
260 u32 *result = va_arg (*args, u32 *);
262 ethernet_main_t *em = ðernet_main;
263 ethernet_interface_t *eif;
265 if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
268 eif = ethernet_get_interface (em, hw_if_index);
271 *result = hw_if_index;
278 ethernet_register_interface (vnet_main_t * vnm,
282 u32 * hw_if_index_return,
283 ethernet_flag_change_function_t flag_change)
285 ethernet_main_t *em = ðernet_main;
286 ethernet_interface_t *ei;
287 vnet_hw_interface_t *hi;
288 clib_error_t *error = 0;
291 pool_get (em->interfaces, ei);
292 ei->flag_change = flag_change;
294 hw_if_index = vnet_register_interface
296 dev_class_index, dev_instance,
297 ethernet_hw_interface_class.index, ei - em->interfaces);
298 *hw_if_index_return = hw_if_index;
300 hi = vnet_get_hw_interface (vnm, hw_if_index);
302 ethernet_setup_node (vnm->vlib_main, hi->output_node_index);
304 hi->min_packet_bytes = hi->min_supported_packet_bytes =
305 ETHERNET_MIN_PACKET_BYTES;
306 hi->max_packet_bytes = hi->max_supported_packet_bytes =
307 ETHERNET_MAX_PACKET_BYTES;
309 /* Standard default ethernet MTU. */
310 vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, 9000);
312 clib_memcpy (ei->address, address, sizeof (ei->address));
313 vec_add (hi->hw_address, address, sizeof (ei->address));
314 CLIB_MEM_UNPOISON (hi->hw_address, 8);
318 pool_put (em->interfaces, ei);
325 ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index)
327 ethernet_main_t *em = ðernet_main;
328 ethernet_interface_t *ei;
329 vnet_hw_interface_t *hi;
330 main_intf_t *main_intf;
331 vlan_table_t *vlan_table;
334 hi = vnet_get_hw_interface (vnm, hw_if_index);
335 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
337 /* Delete vlan mapping table for dot1q and dot1ad. */
338 main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
339 if (main_intf->dot1q_vlans)
341 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
342 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
344 if (vlan_table->vlans[idx].qinqs)
346 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
347 vlan_table->vlans[idx].qinqs = 0;
350 pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
351 main_intf->dot1q_vlans = 0;
353 if (main_intf->dot1ad_vlans)
355 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
356 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
358 if (vlan_table->vlans[idx].qinqs)
360 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
361 vlan_table->vlans[idx].qinqs = 0;
364 pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
365 main_intf->dot1ad_vlans = 0;
368 vnet_delete_hw_interface (vnm, hw_if_index);
369 pool_put (em->interfaces, ei);
373 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
375 ethernet_main_t *em = ðernet_main;
376 vnet_hw_interface_t *hi;
377 ethernet_interface_t *ei;
379 hi = vnet_get_hw_interface (vnm, hw_if_index);
381 ASSERT (hi->hw_class_index == ethernet_hw_interface_class.index);
383 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
386 return ei->flag_change (vnm, hi, flags);
391 * Echo packets back to ethernet/l2-input.
394 simulated_ethernet_interface_tx (vlib_main_t * vm,
395 vlib_node_runtime_t *
396 node, vlib_frame_t * frame)
398 u32 n_left_from, *from;
401 u32 thread_index = vm->thread_index;
402 vnet_main_t *vnm = vnet_get_main ();
403 vnet_interface_main_t *im = &vnm->interface_main;
404 l2_input_config_t *config;
405 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
406 u16 nexts[VLIB_FRAME_SIZE], *next;
407 u32 new_rx_sw_if_index = ~0;
408 u32 new_tx_sw_if_index = ~0;
410 n_left_from = frame->n_vectors;
411 from = vlib_frame_vector_args (frame);
413 vlib_get_buffers (vm, from, bufs, n_left_from);
417 /* Ordinarily, this is the only config lookup. */
418 config = l2input_intf_config (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
420 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
421 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
422 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
423 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
425 while (n_left_from >= 4)
427 u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
428 u32 not_all_match_config;
430 /* Prefetch next iteration. */
431 if (PREDICT_TRUE (n_left_from >= 8))
433 vlib_prefetch_buffer_header (b[4], STORE);
434 vlib_prefetch_buffer_header (b[5], STORE);
435 vlib_prefetch_buffer_header (b[6], STORE);
436 vlib_prefetch_buffer_header (b[7], STORE);
439 /* Make sure all pkts were transmitted on the same (loop) intfc */
440 sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
441 sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
442 sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
443 sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
445 not_all_match_config = (sw_if_index0 ^ sw_if_index1)
446 ^ (sw_if_index2 ^ sw_if_index3);
447 not_all_match_config += sw_if_index0 ^ new_rx_sw_if_index;
449 /* Speed path / expected case: all pkts on the same intfc */
450 if (PREDICT_TRUE (not_all_match_config == 0))
452 next[0] = next_index;
453 next[1] = next_index;
454 next[2] = next_index;
455 next[3] = next_index;
456 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
457 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
458 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
459 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
460 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
461 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
462 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
463 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
464 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
465 n_bytes += vlib_buffer_length_in_chain (vm, b[1]);
466 n_bytes += vlib_buffer_length_in_chain (vm, b[2]);
467 n_bytes += vlib_buffer_length_in_chain (vm, b[3]);
469 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
471 vnet_update_l2_len (b[0]);
472 vnet_update_l2_len (b[1]);
473 vnet_update_l2_len (b[2]);
474 vnet_update_l2_len (b[3]);
477 /* increment TX interface stat */
478 vlib_increment_combined_counter (im->combined_sw_if_counters +
479 VNET_INTERFACE_COUNTER_TX,
480 thread_index, new_rx_sw_if_index,
481 4 /* pkts */ , n_bytes);
489 * Slow path: we know that at least one of the pkts
490 * was transmitted on a different sw_if_index, so
491 * check each sw_if_index against the cached data and proceed
494 * This shouldn't happen, but code can (and does) bypass the
495 * per-interface output node, so deal with it.
497 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
498 != new_rx_sw_if_index))
500 config = l2input_intf_config
501 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
503 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
504 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
505 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
506 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
508 next[0] = next_index;
509 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
510 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
511 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
512 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
513 vnet_update_l2_len (b[0]);
515 vlib_increment_combined_counter (im->combined_sw_if_counters +
516 VNET_INTERFACE_COUNTER_TX,
517 thread_index, new_rx_sw_if_index,
518 1 /* pkts */ , n_bytes);
520 if (PREDICT_FALSE (vnet_buffer (b[1])->sw_if_index[VLIB_TX]
521 != new_rx_sw_if_index))
523 config = l2input_intf_config
524 (vnet_buffer (b[1])->sw_if_index[VLIB_TX]);
526 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
527 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
528 new_rx_sw_if_index = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
529 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
531 next[1] = next_index;
532 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
533 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
534 n_bytes = vlib_buffer_length_in_chain (vm, b[1]);
535 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
536 vnet_update_l2_len (b[1]);
538 vlib_increment_combined_counter (im->combined_sw_if_counters +
539 VNET_INTERFACE_COUNTER_TX,
540 thread_index, new_rx_sw_if_index,
541 1 /* pkts */ , n_bytes);
543 if (PREDICT_FALSE (vnet_buffer (b[2])->sw_if_index[VLIB_TX]
544 != new_rx_sw_if_index))
546 config = l2input_intf_config
547 (vnet_buffer (b[2])->sw_if_index[VLIB_TX]);
549 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
550 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
551 new_rx_sw_if_index = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
552 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
554 next[2] = next_index;
555 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
556 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
557 n_bytes = vlib_buffer_length_in_chain (vm, b[2]);
558 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
559 vnet_update_l2_len (b[2]);
561 vlib_increment_combined_counter (im->combined_sw_if_counters +
562 VNET_INTERFACE_COUNTER_TX,
563 thread_index, new_rx_sw_if_index,
564 1 /* pkts */ , n_bytes);
566 if (PREDICT_FALSE (vnet_buffer (b[3])->sw_if_index[VLIB_TX]
567 != new_rx_sw_if_index))
569 config = l2input_intf_config
570 (vnet_buffer (b[3])->sw_if_index[VLIB_TX]);
572 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
573 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
574 new_rx_sw_if_index = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
575 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
577 next[3] = next_index;
578 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
579 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
580 n_bytes = vlib_buffer_length_in_chain (vm, b[3]);
581 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
582 vnet_update_l2_len (b[3]);
584 vlib_increment_combined_counter (im->combined_sw_if_counters +
585 VNET_INTERFACE_COUNTER_TX,
586 thread_index, new_rx_sw_if_index,
587 1 /* pkts */ , n_bytes);
592 while (n_left_from > 0)
594 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
595 != new_rx_sw_if_index))
597 config = l2input_intf_config
598 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
600 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
601 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
602 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
603 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
605 next[0] = next_index;
606 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
607 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
608 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
609 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
610 vnet_update_l2_len (b[0]);
612 vlib_increment_combined_counter (im->combined_sw_if_counters +
613 VNET_INTERFACE_COUNTER_TX,
614 thread_index, new_rx_sw_if_index,
615 1 /* pkts */ , n_bytes);
621 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
623 return frame->n_vectors;
627 format_simulated_ethernet_name (u8 * s, va_list * args)
629 u32 dev_instance = va_arg (*args, u32);
630 return format (s, "loop%d", dev_instance);
633 static clib_error_t *
634 simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
637 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
638 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
639 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
643 static clib_error_t *
644 simulated_ethernet_mac_change (vnet_hw_interface_t * hi,
645 const u8 * old_address, const u8 * mac_address)
647 l2input_interface_mac_change (hi->sw_if_index, old_address, mac_address);
654 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
656 .format_device_name = format_simulated_ethernet_name,
657 .tx_function = simulated_ethernet_interface_tx,
658 .admin_up_down_function = simulated_ethernet_admin_up_down,
659 .mac_addr_change_function = simulated_ethernet_mac_change,
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 ethernet_interface_add_del_address (ethernet_main_t * em,
898 u32 hw_if_index, const u8 * address,
901 ethernet_interface_t *ei = ethernet_get_interface (em, hw_if_index);
902 mac_address_t *if_addr = 0;
904 /* return if there is not an ethernet interface for this hw interface */
908 /* determine whether the address is configured on the interface */
909 vec_foreach (if_addr, ei->secondary_addrs)
911 if (!ethernet_mac_address_equal (if_addr->bytes, address))
917 if (if_addr && vec_is_member (ei->secondary_addrs, if_addr))
919 /* delete found address */
922 vec_delete (ei->secondary_addrs, 1, if_addr - ei->secondary_addrs);
925 /* address already found, so nothing needs to be done if adding */
929 /* if_addr could be 0 or past the end of the vector. reset to 0 */
932 /* add new address */
935 vec_add2 (ei->secondary_addrs, if_addr, 1);
936 clib_memcpy (&if_addr->bytes, address, sizeof (if_addr->bytes));
944 vnet_delete_loopback_interface (u32 sw_if_index)
946 vnet_main_t *vnm = vnet_get_main ();
948 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
949 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
951 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
952 if (hw == 0 || hw->dev_class_index != ethernet_simulated_device_class.index)
953 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
955 if (loopback_instance_free (hw->dev_instance) < 0)
956 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
958 ethernet_delete_interface (vnm, hw->hw_if_index);
964 vnet_create_sub_interface (u32 sw_if_index, u32 id,
965 u32 flags, u16 inner_vlan_id, u16 outer_vlan_id,
966 u32 * sub_sw_if_index)
968 vnet_main_t *vnm = vnet_get_main ();
969 vnet_interface_main_t *im = &vnm->interface_main;
970 vnet_hw_interface_t *hi;
971 u64 sup_and_sub_key = ((u64) (sw_if_index) << 32) | (u64) id;
972 vnet_sw_interface_t template;
976 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
978 p = hash_get_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
981 return (VNET_API_ERROR_VLAN_ALREADY_EXISTS);
984 clib_memset (&template, 0, sizeof (template));
985 template.type = VNET_SW_INTERFACE_TYPE_SUB;
986 template.flood_class = VNET_FLOOD_CLASS_NORMAL;
987 template.sup_sw_if_index = sw_if_index;
988 template.sub.id = id;
989 template.sub.eth.raw_flags = flags;
990 template.sub.eth.outer_vlan_id = outer_vlan_id;
991 template.sub.eth.inner_vlan_id = inner_vlan_id;
993 if (vnet_create_sw_interface (vnm, &template, sub_sw_if_index))
994 return (VNET_API_ERROR_UNSPECIFIED);
996 kp = clib_mem_alloc (sizeof (*kp));
997 *kp = sup_and_sub_key;
999 hash_set (hi->sub_interface_sw_if_index_by_id, id, *sub_sw_if_index);
1000 hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, *sub_sw_if_index);
1006 vnet_delete_sub_interface (u32 sw_if_index)
1008 vnet_main_t *vnm = vnet_get_main ();
1009 vnet_sw_interface_t *si;
1012 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
1013 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
1015 si = vnet_get_sw_interface (vnm, sw_if_index);
1016 if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
1017 si->type == VNET_SW_INTERFACE_TYPE_PIPE ||
1018 si->type == VNET_SW_INTERFACE_TYPE_P2P)
1020 vnet_interface_main_t *im = &vnm->interface_main;
1021 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1022 u64 sup_and_sub_key =
1023 ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
1024 hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
1025 hash_unset (hi->sub_interface_sw_if_index_by_id, si->sub.id);
1026 vnet_delete_sw_interface (vnm, sw_if_index);
1029 rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
1034 static clib_error_t *
1035 delete_simulated_ethernet_interfaces (vlib_main_t * vm,
1036 unformat_input_t * input,
1037 vlib_cli_command_t * cmd)
1040 u32 sw_if_index = ~0;
1041 vnet_main_t *vnm = vnet_get_main ();
1043 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1045 if (unformat (input, "intfc %U",
1046 unformat_vnet_sw_interface, vnm, &sw_if_index))
1052 if (sw_if_index == ~0)
1053 return clib_error_return (0, "interface not specified");
1055 rv = vnet_delete_loopback_interface (sw_if_index);
1058 return clib_error_return (0, "vnet_delete_loopback_interface failed");
1063 static clib_error_t *
1064 delete_sub_interface (vlib_main_t * vm,
1065 unformat_input_t * input, vlib_cli_command_t * cmd)
1068 u32 sw_if_index = ~0;
1069 vnet_main_t *vnm = vnet_get_main ();
1071 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1074 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1079 if (sw_if_index == ~0)
1080 return clib_error_return (0, "interface doesn't exist");
1082 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
1083 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
1085 rv = vnet_delete_sub_interface (sw_if_index);
1087 return clib_error_return (0, "delete_subinterface_interface failed");
1092 * Delete a loopback interface.
1095 * The following two command syntaxes are equivalent:
1096 * @cliexcmd{loopback delete-interface intfc <interface>}
1097 * @cliexcmd{delete loopback interface intfc <interface>}
1098 * Example of how to delete a loopback interface:
1099 * @cliexcmd{loopback delete-interface intfc loop0}
1102 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
1103 .path = "loopback delete-interface",
1104 .short_help = "loopback delete-interface intfc <interface>",
1105 .function = delete_simulated_ethernet_interfaces,
1110 * Delete a loopback interface.
1113 * The following two command syntaxes are equivalent:
1114 * @cliexcmd{loopback delete-interface intfc <interface>}
1115 * @cliexcmd{delete loopback interface intfc <interface>}
1116 * Example of how to delete a loopback interface:
1117 * @cliexcmd{delete loopback interface intfc loop0}
1120 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
1121 .path = "delete loopback interface",
1122 .short_help = "delete loopback interface intfc <interface>",
1123 .function = delete_simulated_ethernet_interfaces,
1128 * Delete a sub-interface.
1131 * Example of how to delete a sub-interface:
1132 * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
1135 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
1136 .path = "delete sub-interface",
1137 .short_help = "delete sub-interface <interface>",
1138 .function = delete_sub_interface,
1143 * fd.io coding-style-patch-verification: ON
1146 * eval: (c-set-style "gnu")