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.
386 * This node is "special." We know, for example, that
387 * all of the vnet_buffer (bX)->sw_if_index[VLIB_TX] values
388 * [had better!] match.
390 * Please do not copy the code first and ask questions later.
392 * "These are not the droids we're looking.
393 * You can go about your business.
397 simulated_ethernet_interface_tx (vlib_main_t * vm,
398 vlib_node_runtime_t *
399 node, vlib_frame_t * frame)
401 u32 n_left_from, n_left_to_next, *from, *to_next;
404 u32 thread_index = vm->thread_index;
405 vnet_main_t *vnm = vnet_get_main ();
406 vnet_interface_main_t *im = &vnm->interface_main;
407 u32 new_tx_sw_if_index, sw_if_index_all;
408 vlib_buffer_t *b0, *b1, *b2, *b3;
409 u32 bi0, bi1, bi2, bi3;
411 l2_input_config_t *config;
413 n_left_from = frame->n_vectors;
414 from = vlib_frame_args (frame);
417 * Work out where all of the packets are going.
421 b0 = vlib_get_buffer (vm, bi0);
422 sw_if_index_all = vnet_buffer (b0)->sw_if_index[VLIB_TX];
425 * Look at the L2 config for the interface to decide which
426 * graph arc to use. If the interface is bridged, send pkts
427 * to l2-input. Otherwise, to ethernet-input
429 config = l2input_intf_config (sw_if_index_all);
431 config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
432 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
435 * If the interface is a BVI, set the tx sw_if_index to the
436 * L2 path's special value.
437 * Otherwise, set it to ~0, to be reset later by the L3 path
440 new_tx_sw_if_index = L2INPUT_BVI;
442 new_tx_sw_if_index = ~0;
444 /* Get the right next frame... */
445 next_index = next_all;
448 * Use a quad-single loop, in case we have to impedance-match a
449 * full frame into a non-empty next frame or some such.
452 while (n_left_from > 0)
454 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
456 while (n_left_from >= 4 && n_left_to_next >= 4)
458 /* Prefetch next iteration. */
459 if (PREDICT_TRUE (n_left_from >= 8))
461 vlib_buffer_t *p4, *p5, *p6, *p7;
463 p4 = vlib_get_buffer (vm, from[4]);
464 p5 = vlib_get_buffer (vm, from[5]);
465 p6 = vlib_get_buffer (vm, from[6]);
466 p7 = vlib_get_buffer (vm, from[7]);
468 vlib_prefetch_buffer_header (p4, STORE);
469 vlib_prefetch_buffer_header (p5, STORE);
470 vlib_prefetch_buffer_header (p6, STORE);
471 vlib_prefetch_buffer_header (p7, STORE);
473 to_next[0] = bi0 = from[0];
474 to_next[1] = bi1 = from[1];
475 to_next[2] = bi2 = from[2];
476 to_next[3] = bi3 = from[3];
482 b0 = vlib_get_buffer (vm, bi0);
483 b1 = vlib_get_buffer (vm, bi1);
484 b2 = vlib_get_buffer (vm, bi2);
485 b3 = vlib_get_buffer (vm, bi3);
487 /* This "should never happen," of course... */
491 u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
492 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
493 sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
494 sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_TX];
495 sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_TX];
497 cache_not_ok = (sw_if_index0 ^ sw_if_index1)
498 ^ (sw_if_index2 ^ sw_if_index3);
499 cache_not_ok += sw_if_index0 ^ sw_if_index_all;
500 ASSERT (cache_not_ok == 0);
503 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index_all;
504 vnet_buffer (b1)->sw_if_index[VLIB_RX] = sw_if_index_all;
505 vnet_buffer (b2)->sw_if_index[VLIB_RX] = sw_if_index_all;
506 vnet_buffer (b3)->sw_if_index[VLIB_RX] = sw_if_index_all;
508 vnet_buffer (b0)->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
509 vnet_buffer (b1)->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
510 vnet_buffer (b2)->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
511 vnet_buffer (b3)->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
513 /* Update l2 lengths if necessary */
514 if (next_all == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
516 vnet_update_l2_len (b0);
517 vnet_update_l2_len (b1);
518 vnet_update_l2_len (b2);
519 vnet_update_l2_len (b3);
522 /* Byte accounting */
523 n_bytes += vlib_buffer_length_in_chain (vm, b0);
524 n_bytes += vlib_buffer_length_in_chain (vm, b1);
525 n_bytes += vlib_buffer_length_in_chain (vm, b2);
526 n_bytes += vlib_buffer_length_in_chain (vm, b3);
528 /* This *should* be a noop every time... */
529 vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
530 to_next, n_left_to_next,
536 while (n_left_from > 0 && n_left_to_next > 0)
545 b0 = vlib_get_buffer (vm, bi0);
548 u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
549 ASSERT (sw_if_index0 == sw_if_index_all);
552 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index_all;
553 vnet_buffer (b0)->sw_if_index[VLIB_TX] = new_tx_sw_if_index;
554 if (next_all == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT)
555 vnet_update_l2_len (b0);
557 n_bytes += vlib_buffer_length_in_chain (vm, b0);
559 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
560 to_next, n_left_to_next,
563 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
566 /* increment TX interface stat */
567 vlib_increment_combined_counter (im->combined_sw_if_counters +
568 VNET_INTERFACE_COUNTER_TX,
569 thread_index, sw_if_index_all,
570 frame->n_vectors, n_bytes);
572 return frame->n_vectors;
576 format_simulated_ethernet_name (u8 * s, va_list * args)
578 u32 dev_instance = va_arg (*args, u32);
579 return format (s, "loop%d", dev_instance);
582 static clib_error_t *
583 simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
586 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
587 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
588 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
593 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
595 .format_device_name = format_simulated_ethernet_name,
596 .tx_function = simulated_ethernet_interface_tx,
597 .admin_up_down_function = simulated_ethernet_admin_up_down,
601 VLIB_DEVICE_TX_FUNCTION_MULTIARCH (ethernet_simulated_device_class,
602 simulated_ethernet_interface_tx);
605 * Maintain a bitmap of allocated loopback instance numbers.
607 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
610 loopback_instance_alloc (u8 is_specified, u32 want)
612 ethernet_main_t *em = ðernet_main;
615 * Check for dynamically allocaetd instance number.
621 bit = clib_bitmap_first_clear (em->bm_loopback_instances);
622 if (bit >= LOOPBACK_MAX_INSTANCE)
626 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
634 if (want >= LOOPBACK_MAX_INSTANCE)
642 if (clib_bitmap_get (em->bm_loopback_instances, want))
648 * Grant allocation request.
650 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
657 loopback_instance_free (u32 instance)
659 ethernet_main_t *em = ðernet_main;
661 if (instance >= LOOPBACK_MAX_INSTANCE)
666 if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
671 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
677 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
678 u8 is_specified, u32 user_instance)
680 vnet_main_t *vnm = vnet_get_main ();
681 vlib_main_t *vm = vlib_get_main ();
686 vnet_hw_interface_t *hw_if;
690 ASSERT (sw_if_indexp);
692 *sw_if_indexp = (u32) ~ 0;
694 memset (address, 0, sizeof (address));
697 * Allocate a loopback instance. Either select on dynamically
698 * or try to use the desired user_instance number.
700 instance = loopback_instance_alloc (is_specified, user_instance);
703 return VNET_API_ERROR_INVALID_REGISTRATION;
707 * Default MAC address (dead:0000:0000 + instance) is allocated
708 * if zero mac_address is configured. Otherwise, user-configurable MAC
709 * address is programmed on the loopback interface.
711 if (memcmp (address, mac_address, sizeof (address)))
712 clib_memcpy (address, mac_address, sizeof (address));
717 address[5] = instance;
720 error = ethernet_register_interface
722 ethernet_simulated_device_class.index, instance, address, &hw_if_index,
723 /* flag change */ 0);
727 rv = VNET_API_ERROR_INVALID_REGISTRATION;
728 clib_error_report (error);
732 hw_if = vnet_get_hw_interface (vnm, hw_if_index);
733 slot = vlib_node_add_named_next_with_slot
734 (vm, hw_if->tx_node_index,
735 "ethernet-input", VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
736 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
738 slot = vlib_node_add_named_next_with_slot
739 (vm, hw_if->tx_node_index,
740 "l2-input", VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
741 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT);
744 vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
745 *sw_if_indexp = si->sw_if_index;
747 /* By default don't flood to loopbacks, as packets just keep
748 * coming back ... If this loopback becomes a BVI, we'll change it */
749 si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD;
755 static clib_error_t *
756 create_simulated_ethernet_interfaces (vlib_main_t * vm,
757 unformat_input_t * input,
758 vlib_cli_command_t * cmd)
764 u32 user_instance = 0;
766 memset (mac_address, 0, sizeof (mac_address));
768 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
770 if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
772 if (unformat (input, "instance %d", &user_instance))
778 rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
779 is_specified, user_instance);
782 return clib_error_return (0, "vnet_create_loopback_interface failed");
784 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
790 * Create a loopback interface. Optionally, a MAC Address can be
791 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
794 * The following two command syntaxes are equivalent:
795 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
796 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
797 * Example of how to create a loopback interface:
798 * @cliexcmd{loopback create-interface}
801 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
802 .path = "loopback create-interface",
803 .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
804 .function = create_simulated_ethernet_interfaces,
809 * Create a loopback interface. Optionally, a MAC Address can be
810 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
813 * The following two command syntaxes are equivalent:
814 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
815 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
816 * Example of how to create a loopback interface:
817 * @cliexcmd{create loopback interface}
820 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
821 .path = "create loopback interface",
822 .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
823 .function = create_simulated_ethernet_interfaces,
827 ethernet_interface_t *
828 ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index)
830 vnet_hw_interface_t *i =
831 vnet_get_hw_interface (vnet_get_main (), hw_if_index);
832 return (i->hw_class_index ==
833 ethernet_hw_interface_class.
834 index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
838 vnet_delete_loopback_interface (u32 sw_if_index)
840 vnet_main_t *vnm = vnet_get_main ();
842 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
843 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
845 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
846 if (hw == 0 || hw->dev_class_index != ethernet_simulated_device_class.index)
847 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
849 if (loopback_instance_free (hw->dev_instance) < 0)
850 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
852 ethernet_delete_interface (vnm, hw->hw_if_index);
858 vnet_delete_sub_interface (u32 sw_if_index)
860 vnet_main_t *vnm = vnet_get_main ();
861 vnet_sw_interface_t *si;
864 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
865 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
867 si = vnet_get_sw_interface (vnm, sw_if_index);
868 if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
869 si->type == VNET_SW_INTERFACE_TYPE_PIPE ||
870 si->type == VNET_SW_INTERFACE_TYPE_P2P)
872 vnet_interface_main_t *im = &vnm->interface_main;
873 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
874 u64 sup_and_sub_key =
875 ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
876 hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
877 hash_unset (hi->sub_interface_sw_if_index_by_id, si->sub.id);
878 vnet_delete_sw_interface (vnm, sw_if_index);
881 rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
886 static clib_error_t *
887 delete_simulated_ethernet_interfaces (vlib_main_t * vm,
888 unformat_input_t * input,
889 vlib_cli_command_t * cmd)
892 u32 sw_if_index = ~0;
893 vnet_main_t *vnm = vnet_get_main ();
895 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
897 if (unformat (input, "intfc %U",
898 unformat_vnet_sw_interface, vnm, &sw_if_index))
904 if (sw_if_index == ~0)
905 return clib_error_return (0, "interface not specified");
907 rv = vnet_delete_loopback_interface (sw_if_index);
910 return clib_error_return (0, "vnet_delete_loopback_interface failed");
915 static clib_error_t *
916 delete_sub_interface (vlib_main_t * vm,
917 unformat_input_t * input, vlib_cli_command_t * cmd)
920 u32 sw_if_index = ~0;
921 vnet_main_t *vnm = vnet_get_main ();
923 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
926 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
931 if (sw_if_index == ~0)
932 return clib_error_return (0, "interface doesn't exist");
934 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
935 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
937 rv = vnet_delete_sub_interface (sw_if_index);
939 return clib_error_return (0, "delete_subinterface_interface failed");
944 * Delete a loopback interface.
947 * The following two command syntaxes are equivalent:
948 * @cliexcmd{loopback delete-interface intfc <interface>}
949 * @cliexcmd{delete loopback interface intfc <interface>}
950 * Example of how to delete a loopback interface:
951 * @cliexcmd{loopback delete-interface intfc loop0}
954 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
955 .path = "loopback delete-interface",
956 .short_help = "loopback delete-interface intfc <interface>",
957 .function = delete_simulated_ethernet_interfaces,
962 * Delete a loopback interface.
965 * The following two command syntaxes are equivalent:
966 * @cliexcmd{loopback delete-interface intfc <interface>}
967 * @cliexcmd{delete loopback interface intfc <interface>}
968 * Example of how to delete a loopback interface:
969 * @cliexcmd{delete loopback interface intfc loop0}
972 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
973 .path = "delete loopback interface",
974 .short_help = "delete loopback interface intfc <interface>",
975 .function = delete_simulated_ethernet_interfaces,
980 * Delete a sub-interface.
983 * Example of how to delete a sub-interface:
984 * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
987 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
988 .path = "delete sub-interface",
989 .short_help = "delete sub-interface <interface>",
990 .function = delete_sub_interface,
995 * fd.io coding-style-patch-verification: ON
998 * eval: (c-set-style "gnu")