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>
48 #include <vnet/adj/adj_mcast.h>
49 #include <vnet/ip-neighbor/ip_neighbor.h>
53 * @brief Loopback Interfaces.
55 * This file contains code to manage loopback interfaces.
59 ethernet_ip4_mcast_dst_addr (void)
61 const static u8 ethernet_mcast_dst_mac[] = {
62 0x1, 0x0, 0x5e, 0x0, 0x0, 0x0,
65 return (ethernet_mcast_dst_mac);
69 ethernet_ip6_mcast_dst_addr (void)
71 const static u8 ethernet_mcast_dst_mac[] = {
72 0x33, 0x33, 0x00, 0x0, 0x0, 0x0,
75 return (ethernet_mcast_dst_mac);
79 * @brief build a rewrite string to use for sending packets of type 'link_type'
83 ethernet_build_rewrite (vnet_main_t * vnm,
85 vnet_link_t link_type, const void *dst_address)
87 vnet_sw_interface_t *sub_sw = vnet_get_sw_interface (vnm, sw_if_index);
88 vnet_sw_interface_t *sup_sw = vnet_get_sup_sw_interface (vnm, sw_if_index);
89 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
90 ethernet_main_t *em = ðernet_main;
91 ethernet_interface_t *ei;
94 uword n_bytes = sizeof (h[0]);
98 if ((sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P) ||
99 (sub_sw->type == VNET_SW_INTERFACE_TYPE_PIPE))
101 if (sub_sw != sup_sw)
103 if (sub_sw->sub.eth.flags.one_tag)
105 n_bytes += sizeof (ethernet_vlan_header_t);
107 else if (sub_sw->sub.eth.flags.two_tags)
109 n_bytes += 2 * (sizeof (ethernet_vlan_header_t));
111 else if (PREDICT_FALSE (is_p2p))
113 n_bytes = sizeof (ethernet_header_t);
115 if (PREDICT_FALSE (!is_p2p))
117 // Check for encaps that are not supported for L3 interfaces
118 if (!(sub_sw->sub.eth.flags.exact_match) ||
119 (sub_sw->sub.eth.flags.default_sub) ||
120 (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
121 (sub_sw->sub.eth.flags.inner_vlan_id_any))
128 n_bytes = sizeof (ethernet_header_t);
134 #define _(a,b) case VNET_LINK_##a: type = ETHERNET_TYPE_##b; break
144 vec_validate (rewrite, n_bytes - 1);
145 h = (ethernet_header_t *) rewrite;
146 ei = pool_elt_at_index (em->interfaces, hw->hw_instance);
147 clib_memcpy (h->src_address, ei->address, sizeof (h->src_address));
150 clib_memcpy (h->dst_address, sub_sw->p2p.client_mac,
151 sizeof (h->dst_address));
156 clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
158 clib_memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
161 if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag)
163 ethernet_vlan_header_t *outer = (void *) (h + 1);
165 h->type = sub_sw->sub.eth.flags.dot1ad ?
166 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
167 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
168 outer->priority_cfi_and_id =
169 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
170 outer->type = clib_host_to_net_u16 (type);
173 else if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.two_tags)
175 ethernet_vlan_header_t *outer = (void *) (h + 1);
176 ethernet_vlan_header_t *inner = (void *) (outer + 1);
178 h->type = sub_sw->sub.eth.flags.dot1ad ?
179 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
180 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
181 outer->priority_cfi_and_id =
182 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
183 outer->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
184 inner->priority_cfi_and_id =
185 clib_host_to_net_u16 (sub_sw->sub.eth.inner_vlan_id);
186 inner->type = clib_host_to_net_u16 (type);
191 h->type = clib_host_to_net_u16 (type);
198 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);
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);
213 switch (adj->lookup_next_index)
215 case IP_LOOKUP_NEXT_GLEAN:
216 adj_glean_update_rewrite (ai);
218 case IP_LOOKUP_NEXT_ARP:
219 ip_neighbor_update (vnm, ai);
221 case IP_LOOKUP_NEXT_BCAST:
222 adj_nbr_update_rewrite (ai,
223 ADJ_NBR_REWRITE_FLAG_COMPLETE,
224 ethernet_build_rewrite
226 adj->rewrite_header.sw_if_index,
228 VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
230 case IP_LOOKUP_NEXT_MCAST:
233 * Construct a partial rewrite from the known ethernet mcast dest MAC
238 rewrite = ethernet_build_rewrite
242 (adj->ia_nh_proto == FIB_PROTOCOL_IP6 ?
243 ethernet_ip6_mcast_dst_addr () :
244 ethernet_ip4_mcast_dst_addr ()));
247 * Complete the remaining fields of the adj's rewrite to direct the
248 * complete of the rewrite at switch time by copying in the IP
249 * dst address's bytes.
250 * Ofset is 2 bytes into the destintation address.
252 offset = vec_len (rewrite) - 2;
253 adj_mcast_update_rewrite (ai, rewrite, offset);
257 case IP_LOOKUP_NEXT_DROP:
258 case IP_LOOKUP_NEXT_PUNT:
259 case IP_LOOKUP_NEXT_LOCAL:
260 case IP_LOOKUP_NEXT_REWRITE:
261 case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
262 case IP_LOOKUP_NEXT_MIDCHAIN:
263 case IP_LOOKUP_NEXT_ICMP_ERROR:
264 case IP_LOOKUP_N_NEXT:
271 static clib_error_t *
272 ethernet_mac_change (vnet_hw_interface_t * hi,
273 const u8 * old_address, const u8 * mac_address)
275 ethernet_interface_t *ei;
279 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
281 vec_validate (hi->hw_address,
282 STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1);
283 clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
285 clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
288 ethernet_address_change_ctx_t *cb;
289 vec_foreach (cb, em->address_change_callbacks)
290 cb->function (em, hi->sw_if_index, cb->function_opaque);
297 VNET_HW_INTERFACE_CLASS (ethernet_hw_interface_class) = {
299 .format_address = format_ethernet_address,
300 .format_header = format_ethernet_header_with_length,
301 .unformat_hw_address = unformat_ethernet_address,
302 .unformat_header = unformat_ethernet_header,
303 .build_rewrite = ethernet_build_rewrite,
304 .update_adjacency = ethernet_update_adjacency,
305 .mac_addr_change_function = ethernet_mac_change,
310 unformat_ethernet_interface (unformat_input_t * input, va_list * args)
312 vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
313 u32 *result = va_arg (*args, u32 *);
315 ethernet_main_t *em = ðernet_main;
316 ethernet_interface_t *eif;
318 if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
321 eif = ethernet_get_interface (em, hw_if_index);
324 *result = hw_if_index;
331 ethernet_register_interface (vnet_main_t * vnm,
335 u32 * hw_if_index_return,
336 ethernet_flag_change_function_t flag_change)
338 ethernet_main_t *em = ðernet_main;
339 ethernet_interface_t *ei;
340 vnet_hw_interface_t *hi;
341 clib_error_t *error = 0;
344 pool_get (em->interfaces, ei);
345 ei->flag_change = flag_change;
347 hw_if_index = vnet_register_interface
349 dev_class_index, dev_instance,
350 ethernet_hw_interface_class.index, ei - em->interfaces);
351 *hw_if_index_return = hw_if_index;
353 hi = vnet_get_hw_interface (vnm, hw_if_index);
355 ethernet_setup_node (vnm->vlib_main, hi->output_node_index);
357 hi->min_packet_bytes = hi->min_supported_packet_bytes =
358 ETHERNET_MIN_PACKET_BYTES;
359 hi->max_packet_bytes = hi->max_supported_packet_bytes =
360 ETHERNET_MAX_PACKET_BYTES;
362 /* Default ethernet MTU, 9000 unless set by ethernet_config see below */
363 vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, em->default_mtu);
365 clib_memcpy (ei->address, address, sizeof (ei->address));
366 vec_add (hi->hw_address, address, sizeof (ei->address));
367 CLIB_MEM_UNPOISON (hi->hw_address, 8);
371 pool_put (em->interfaces, ei);
378 ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index)
380 ethernet_main_t *em = ðernet_main;
381 ethernet_interface_t *ei;
382 vnet_hw_interface_t *hi;
383 main_intf_t *main_intf;
384 vlan_table_t *vlan_table;
387 hi = vnet_get_hw_interface (vnm, hw_if_index);
388 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
390 /* Delete vlan mapping table for dot1q and dot1ad. */
391 main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
392 if (main_intf->dot1q_vlans)
394 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
395 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
397 if (vlan_table->vlans[idx].qinqs)
399 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
400 vlan_table->vlans[idx].qinqs = 0;
403 pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
404 main_intf->dot1q_vlans = 0;
406 if (main_intf->dot1ad_vlans)
408 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
409 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
411 if (vlan_table->vlans[idx].qinqs)
413 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
414 vlan_table->vlans[idx].qinqs = 0;
417 pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
418 main_intf->dot1ad_vlans = 0;
421 vnet_delete_hw_interface (vnm, hw_if_index);
422 pool_put (em->interfaces, ei);
426 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
428 ethernet_main_t *em = ðernet_main;
429 vnet_hw_interface_t *hi;
430 ethernet_interface_t *ei;
431 u32 opn_flags = flags & ETHERNET_INTERFACE_FLAGS_SET_OPN_MASK;
433 hi = vnet_get_hw_interface (vnm, hw_if_index);
435 ASSERT (hi->hw_class_index == ethernet_hw_interface_class.index);
437 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
439 /* preserve status bits and update last set operation bits */
440 ei->flags = (ei->flags & ETHERNET_INTERFACE_FLAGS_STATUS_MASK) | opn_flags;
446 case ETHERNET_INTERFACE_FLAG_DEFAULT_L3:
447 if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_MAC_FILTER)
449 if (ei->flag_change (vnm, hi, opn_flags) != ~0)
451 ei->flags |= ETHERNET_INTERFACE_FLAG_STATUS_L3;
454 ei->flags &= ~ETHERNET_INTERFACE_FLAG_STATUS_L3;
458 case ETHERNET_INTERFACE_FLAG_ACCEPT_ALL:
459 ei->flags &= ~ETHERNET_INTERFACE_FLAG_STATUS_L3;
461 case ETHERNET_INTERFACE_FLAG_MTU:
462 return ei->flag_change (vnm, hi, opn_flags);
471 * Echo packets back to ethernet/l2-input.
474 simulated_ethernet_interface_tx (vlib_main_t * vm,
475 vlib_node_runtime_t *
476 node, vlib_frame_t * frame)
478 u32 n_left_from, *from;
481 u32 thread_index = vm->thread_index;
482 vnet_main_t *vnm = vnet_get_main ();
483 vnet_interface_main_t *im = &vnm->interface_main;
484 l2_input_config_t *config;
485 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
486 u16 nexts[VLIB_FRAME_SIZE], *next;
487 u32 new_rx_sw_if_index = ~0;
488 u32 new_tx_sw_if_index = ~0;
490 n_left_from = frame->n_vectors;
491 from = vlib_frame_vector_args (frame);
493 vlib_get_buffers (vm, from, bufs, n_left_from);
497 /* Ordinarily, this is the only config lookup. */
498 config = l2input_intf_config (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 while (n_left_from >= 4)
507 u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
508 u32 not_all_match_config;
510 /* Prefetch next iteration. */
511 if (PREDICT_TRUE (n_left_from >= 8))
513 vlib_prefetch_buffer_header (b[4], STORE);
514 vlib_prefetch_buffer_header (b[5], STORE);
515 vlib_prefetch_buffer_header (b[6], STORE);
516 vlib_prefetch_buffer_header (b[7], STORE);
519 /* Make sure all pkts were transmitted on the same (loop) intfc */
520 sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
521 sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
522 sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
523 sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
525 not_all_match_config = (sw_if_index0 ^ sw_if_index1)
526 ^ (sw_if_index2 ^ sw_if_index3);
527 not_all_match_config += sw_if_index0 ^ new_rx_sw_if_index;
529 /* Speed path / expected case: all pkts on the same intfc */
530 if (PREDICT_TRUE (not_all_match_config == 0))
532 next[0] = next_index;
533 next[1] = next_index;
534 next[2] = next_index;
535 next[3] = next_index;
536 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
537 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
538 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
539 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
540 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
541 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
542 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
543 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
544 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
545 n_bytes += vlib_buffer_length_in_chain (vm, b[1]);
546 n_bytes += vlib_buffer_length_in_chain (vm, b[2]);
547 n_bytes += vlib_buffer_length_in_chain (vm, b[3]);
549 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
551 vnet_update_l2_len (b[0]);
552 vnet_update_l2_len (b[1]);
553 vnet_update_l2_len (b[2]);
554 vnet_update_l2_len (b[3]);
557 /* increment TX interface stat */
558 vlib_increment_combined_counter (im->combined_sw_if_counters +
559 VNET_INTERFACE_COUNTER_TX,
560 thread_index, new_rx_sw_if_index,
561 4 /* pkts */ , n_bytes);
569 * Slow path: we know that at least one of the pkts
570 * was transmitted on a different sw_if_index, so
571 * check each sw_if_index against the cached data and proceed
574 * This shouldn't happen, but code can (and does) bypass the
575 * per-interface output node, so deal with it.
577 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
578 != new_rx_sw_if_index))
580 config = l2input_intf_config
581 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
583 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
584 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
585 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
586 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
588 next[0] = next_index;
589 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
590 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
591 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
592 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
593 vnet_update_l2_len (b[0]);
595 vlib_increment_combined_counter (im->combined_sw_if_counters +
596 VNET_INTERFACE_COUNTER_TX,
597 thread_index, new_rx_sw_if_index,
598 1 /* pkts */ , n_bytes);
600 if (PREDICT_FALSE (vnet_buffer (b[1])->sw_if_index[VLIB_TX]
601 != new_rx_sw_if_index))
603 config = l2input_intf_config
604 (vnet_buffer (b[1])->sw_if_index[VLIB_TX]);
606 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
607 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
608 new_rx_sw_if_index = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
609 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
611 next[1] = next_index;
612 vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
613 vnet_buffer (b[1])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
614 n_bytes = vlib_buffer_length_in_chain (vm, b[1]);
615 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
616 vnet_update_l2_len (b[1]);
618 vlib_increment_combined_counter (im->combined_sw_if_counters +
619 VNET_INTERFACE_COUNTER_TX,
620 thread_index, new_rx_sw_if_index,
621 1 /* pkts */ , n_bytes);
623 if (PREDICT_FALSE (vnet_buffer (b[2])->sw_if_index[VLIB_TX]
624 != new_rx_sw_if_index))
626 config = l2input_intf_config
627 (vnet_buffer (b[2])->sw_if_index[VLIB_TX]);
629 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
630 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
631 new_rx_sw_if_index = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
632 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
634 next[2] = next_index;
635 vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
636 vnet_buffer (b[2])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
637 n_bytes = vlib_buffer_length_in_chain (vm, b[2]);
638 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
639 vnet_update_l2_len (b[2]);
641 vlib_increment_combined_counter (im->combined_sw_if_counters +
642 VNET_INTERFACE_COUNTER_TX,
643 thread_index, new_rx_sw_if_index,
644 1 /* pkts */ , n_bytes);
646 if (PREDICT_FALSE (vnet_buffer (b[3])->sw_if_index[VLIB_TX]
647 != new_rx_sw_if_index))
649 config = l2input_intf_config
650 (vnet_buffer (b[3])->sw_if_index[VLIB_TX]);
652 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
653 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
654 new_rx_sw_if_index = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
655 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
657 next[3] = next_index;
658 vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
659 vnet_buffer (b[3])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
660 n_bytes = vlib_buffer_length_in_chain (vm, b[3]);
661 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
662 vnet_update_l2_len (b[3]);
664 vlib_increment_combined_counter (im->combined_sw_if_counters +
665 VNET_INTERFACE_COUNTER_TX,
666 thread_index, new_rx_sw_if_index,
667 1 /* pkts */ , n_bytes);
672 while (n_left_from > 0)
674 if (PREDICT_FALSE (vnet_buffer (b[0])->sw_if_index[VLIB_TX]
675 != new_rx_sw_if_index))
677 config = l2input_intf_config
678 (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
680 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
681 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
682 new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
683 new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
685 next[0] = next_index;
686 vnet_buffer (b[0])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
687 vnet_buffer (b[0])->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
688 n_bytes = vlib_buffer_length_in_chain (vm, b[0]);
689 if (next_index == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
690 vnet_update_l2_len (b[0]);
692 vlib_increment_combined_counter (im->combined_sw_if_counters +
693 VNET_INTERFACE_COUNTER_TX,
694 thread_index, new_rx_sw_if_index,
695 1 /* pkts */ , n_bytes);
701 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
703 return frame->n_vectors;
707 format_simulated_ethernet_name (u8 * s, va_list * args)
709 u32 dev_instance = va_arg (*args, u32);
710 return format (s, "loop%d", dev_instance);
713 static clib_error_t *
714 simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
717 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
718 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
719 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
723 static clib_error_t *
724 simulated_ethernet_mac_change (vnet_hw_interface_t * hi,
725 const u8 * old_address, const u8 * mac_address)
727 l2input_interface_mac_change (hi->sw_if_index, old_address, mac_address);
734 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
736 .format_device_name = format_simulated_ethernet_name,
737 .tx_function = simulated_ethernet_interface_tx,
738 .admin_up_down_function = simulated_ethernet_admin_up_down,
739 .mac_addr_change_function = simulated_ethernet_mac_change,
744 * Maintain a bitmap of allocated loopback instance numbers.
746 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
749 loopback_instance_alloc (u8 is_specified, u32 want)
751 ethernet_main_t *em = ðernet_main;
754 * Check for dynamically allocaetd instance number.
760 bit = clib_bitmap_first_clear (em->bm_loopback_instances);
761 if (bit >= LOOPBACK_MAX_INSTANCE)
765 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
773 if (want >= LOOPBACK_MAX_INSTANCE)
781 if (clib_bitmap_get (em->bm_loopback_instances, want))
787 * Grant allocation request.
789 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
796 loopback_instance_free (u32 instance)
798 ethernet_main_t *em = ðernet_main;
800 if (instance >= LOOPBACK_MAX_INSTANCE)
805 if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
810 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
816 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
817 u8 is_specified, u32 user_instance)
819 vnet_main_t *vnm = vnet_get_main ();
820 vlib_main_t *vm = vlib_get_main ();
825 vnet_hw_interface_t *hw_if;
829 ASSERT (sw_if_indexp);
831 *sw_if_indexp = (u32) ~ 0;
833 clib_memset (address, 0, sizeof (address));
836 * Allocate a loopback instance. Either select on dynamically
837 * or try to use the desired user_instance number.
839 instance = loopback_instance_alloc (is_specified, user_instance);
842 return VNET_API_ERROR_INVALID_REGISTRATION;
846 * Default MAC address (dead:0000:0000 + instance) is allocated
847 * if zero mac_address is configured. Otherwise, user-configurable MAC
848 * address is programmed on the loopback interface.
850 if (memcmp (address, mac_address, sizeof (address)))
851 clib_memcpy (address, mac_address, sizeof (address));
856 address[5] = instance;
859 error = ethernet_register_interface
861 ethernet_simulated_device_class.index, instance, address, &hw_if_index,
862 /* flag change */ 0);
866 rv = VNET_API_ERROR_INVALID_REGISTRATION;
867 clib_error_report (error);
871 hw_if = vnet_get_hw_interface (vnm, hw_if_index);
872 slot = vlib_node_add_named_next_with_slot
873 (vm, hw_if->tx_node_index,
874 "ethernet-input", VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
875 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
877 slot = vlib_node_add_named_next_with_slot
878 (vm, hw_if->tx_node_index,
879 "l2-input", VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
880 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
883 vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
884 *sw_if_indexp = si->sw_if_index;
886 /* By default don't flood to loopbacks, as packets just keep
887 * coming back ... If this loopback becomes a BVI, we'll change it */
888 si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD;
894 static clib_error_t *
895 create_simulated_ethernet_interfaces (vlib_main_t * vm,
896 unformat_input_t * input,
897 vlib_cli_command_t * cmd)
903 u32 user_instance = 0;
905 clib_memset (mac_address, 0, sizeof (mac_address));
907 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
909 if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
911 if (unformat (input, "instance %d", &user_instance))
917 rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
918 is_specified, user_instance);
921 return clib_error_return (0, "vnet_create_loopback_interface failed");
923 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
929 * Create a loopback interface. Optionally, a MAC Address can be
930 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
933 * The following two command syntaxes are equivalent:
934 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
935 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
936 * Example of how to create a loopback interface:
937 * @cliexcmd{loopback create-interface}
940 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
941 .path = "loopback create-interface",
942 .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
943 .function = create_simulated_ethernet_interfaces,
948 * Create a loopback interface. Optionally, a MAC Address can be
949 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
952 * The following two command syntaxes are equivalent:
953 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
954 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
955 * Example of how to create a loopback interface:
956 * @cliexcmd{create loopback interface}
959 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
960 .path = "create loopback interface",
961 .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
962 .function = create_simulated_ethernet_interfaces,
966 ethernet_interface_t *
967 ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index)
969 vnet_hw_interface_t *i =
970 vnet_get_hw_interface (vnet_get_main (), hw_if_index);
971 return (i->hw_class_index ==
972 ethernet_hw_interface_class.
973 index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
977 ethernet_interface_add_del_address (ethernet_main_t * em,
978 u32 hw_if_index, const u8 * address,
981 ethernet_interface_t *ei = ethernet_get_interface (em, hw_if_index);
982 mac_address_t *if_addr = 0;
984 /* return if there is not an ethernet interface for this hw interface */
988 /* determine whether the address is configured on the interface */
989 vec_foreach (if_addr, ei->secondary_addrs)
991 if (!ethernet_mac_address_equal (if_addr->bytes, address))
997 if (if_addr && vec_is_member (ei->secondary_addrs, if_addr))
999 /* delete found address */
1002 vec_delete (ei->secondary_addrs, 1, if_addr - ei->secondary_addrs);
1005 /* address already found, so nothing needs to be done if adding */
1009 /* if_addr could be 0 or past the end of the vector. reset to 0 */
1012 /* add new address */
1015 vec_add2 (ei->secondary_addrs, if_addr, 1);
1016 clib_memcpy (&if_addr->bytes, address, sizeof (if_addr->bytes));
1024 vnet_delete_loopback_interface (u32 sw_if_index)
1026 vnet_main_t *vnm = vnet_get_main ();
1028 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
1029 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
1031 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
1032 if (hw == 0 || hw->dev_class_index != ethernet_simulated_device_class.index)
1033 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
1035 if (loopback_instance_free (hw->dev_instance) < 0)
1036 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
1038 ethernet_delete_interface (vnm, hw->hw_if_index);
1044 vnet_create_sub_interface (u32 sw_if_index, u32 id,
1045 u32 flags, u16 inner_vlan_id, u16 outer_vlan_id,
1046 u32 * sub_sw_if_index)
1048 vnet_main_t *vnm = vnet_get_main ();
1049 vnet_interface_main_t *im = &vnm->interface_main;
1050 vnet_hw_interface_t *hi;
1051 u64 sup_and_sub_key = ((u64) (sw_if_index) << 32) | (u64) id;
1052 vnet_sw_interface_t template;
1056 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1058 p = hash_get_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
1061 return (VNET_API_ERROR_VLAN_ALREADY_EXISTS);
1064 clib_memset (&template, 0, sizeof (template));
1065 template.type = VNET_SW_INTERFACE_TYPE_SUB;
1066 template.flood_class = VNET_FLOOD_CLASS_NORMAL;
1067 template.sup_sw_if_index = sw_if_index;
1068 template.sub.id = id;
1069 template.sub.eth.raw_flags = flags;
1070 template.sub.eth.outer_vlan_id = outer_vlan_id;
1071 template.sub.eth.inner_vlan_id = inner_vlan_id;
1073 if (vnet_create_sw_interface (vnm, &template, sub_sw_if_index))
1074 return (VNET_API_ERROR_UNSPECIFIED);
1076 kp = clib_mem_alloc (sizeof (*kp));
1077 *kp = sup_and_sub_key;
1079 hash_set (hi->sub_interface_sw_if_index_by_id, id, *sub_sw_if_index);
1080 hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, *sub_sw_if_index);
1086 vnet_delete_sub_interface (u32 sw_if_index)
1088 vnet_main_t *vnm = vnet_get_main ();
1089 vnet_sw_interface_t *si;
1092 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
1093 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
1095 si = vnet_get_sw_interface (vnm, sw_if_index);
1096 if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
1097 si->type == VNET_SW_INTERFACE_TYPE_PIPE ||
1098 si->type == VNET_SW_INTERFACE_TYPE_P2P)
1100 vnet_interface_main_t *im = &vnm->interface_main;
1101 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1102 u64 sup_and_sub_key =
1103 ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
1104 hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
1105 hash_unset (hi->sub_interface_sw_if_index_by_id, si->sub.id);
1106 vnet_delete_sw_interface (vnm, sw_if_index);
1109 rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
1114 static clib_error_t *
1115 delete_simulated_ethernet_interfaces (vlib_main_t * vm,
1116 unformat_input_t * input,
1117 vlib_cli_command_t * cmd)
1120 u32 sw_if_index = ~0;
1121 vnet_main_t *vnm = vnet_get_main ();
1123 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1125 if (unformat (input, "intfc %U",
1126 unformat_vnet_sw_interface, vnm, &sw_if_index))
1132 if (sw_if_index == ~0)
1133 return clib_error_return (0, "interface not specified");
1135 rv = vnet_delete_loopback_interface (sw_if_index);
1138 return clib_error_return (0, "vnet_delete_loopback_interface failed");
1143 static clib_error_t *
1144 delete_sub_interface (vlib_main_t * vm,
1145 unformat_input_t * input, vlib_cli_command_t * cmd)
1148 u32 sw_if_index = ~0;
1149 vnet_main_t *vnm = vnet_get_main ();
1151 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1154 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1159 if (sw_if_index == ~0)
1160 return clib_error_return (0, "interface doesn't exist");
1162 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
1163 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
1165 rv = vnet_delete_sub_interface (sw_if_index);
1167 return clib_error_return (0, "delete_subinterface_interface failed");
1172 * Delete a loopback interface.
1175 * The following two command syntaxes are equivalent:
1176 * @cliexcmd{loopback delete-interface intfc <interface>}
1177 * @cliexcmd{delete loopback interface intfc <interface>}
1178 * Example of how to delete a loopback interface:
1179 * @cliexcmd{loopback delete-interface intfc loop0}
1182 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
1183 .path = "loopback delete-interface",
1184 .short_help = "loopback delete-interface intfc <interface>",
1185 .function = delete_simulated_ethernet_interfaces,
1190 * Delete a loopback interface.
1193 * The following two command syntaxes are equivalent:
1194 * @cliexcmd{loopback delete-interface intfc <interface>}
1195 * @cliexcmd{delete loopback interface intfc <interface>}
1196 * Example of how to delete a loopback interface:
1197 * @cliexcmd{delete loopback interface intfc loop0}
1200 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
1201 .path = "delete loopback interface",
1202 .short_help = "delete loopback interface intfc <interface>",
1203 .function = delete_simulated_ethernet_interfaces,
1208 * Delete a sub-interface.
1211 * Example of how to delete a sub-interface:
1212 * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
1215 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
1216 .path = "delete sub-interface",
1217 .short_help = "delete sub-interface <interface>",
1218 .function = delete_sub_interface,
1222 /* ethernet { ... } configuration. */
1225 * @cfgcmd{default-mtu <n>}
1226 * Specify the default mtu in the range of 64-9000. The default is 9000 bytes.
1229 static clib_error_t *
1230 ethernet_config (vlib_main_t * vm, unformat_input_t * input)
1232 ethernet_main_t *em = ðernet_main;
1234 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1236 if (unformat (input, "default-mtu %u", &em->default_mtu))
1238 if (em->default_mtu < 64 || em->default_mtu > 9000)
1239 return clib_error_return (0, "default MTU must be >=64, <=9000");
1243 return clib_error_return (0, "unknown input '%U'",
1244 format_unformat_error, input);
1250 VLIB_CONFIG_FUNCTION (ethernet_config, "ethernet");
1253 * fd.io coding-style-patch-verification: ON
1256 * eval: (c-set-style "gnu")