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)
98 if (sub_sw->sub.eth.flags.one_tag)
100 n_bytes += sizeof (ethernet_vlan_header_t);
102 else if (sub_sw->sub.eth.flags.two_tags)
104 n_bytes += 2 * (sizeof (ethernet_vlan_header_t));
106 else if (PREDICT_FALSE (is_p2p))
108 n_bytes = sizeof (ethernet_header_t);
110 if (PREDICT_FALSE (!is_p2p))
112 // Check for encaps that are not supported for L3 interfaces
113 if (!(sub_sw->sub.eth.flags.exact_match) ||
114 (sub_sw->sub.eth.flags.default_sub) ||
115 (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
116 (sub_sw->sub.eth.flags.inner_vlan_id_any))
123 n_bytes = sizeof (ethernet_header_t);
129 #define _(a,b) case VNET_LINK_##a: type = ETHERNET_TYPE_##b; break
139 vec_validate (rewrite, n_bytes - 1);
140 h = (ethernet_header_t *) rewrite;
141 ei = pool_elt_at_index (em->interfaces, hw->hw_instance);
142 clib_memcpy (h->src_address, ei->address, sizeof (h->src_address));
145 clib_memcpy (h->dst_address, sub_sw->p2p.client_mac,
146 sizeof (h->dst_address));
151 clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
153 memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
156 if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag)
158 ethernet_vlan_header_t *outer = (void *) (h + 1);
160 h->type = sub_sw->sub.eth.flags.dot1ad ?
161 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
162 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
163 outer->priority_cfi_and_id =
164 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
165 outer->type = clib_host_to_net_u16 (type);
168 else if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.two_tags)
170 ethernet_vlan_header_t *outer = (void *) (h + 1);
171 ethernet_vlan_header_t *inner = (void *) (outer + 1);
173 h->type = sub_sw->sub.eth.flags.dot1ad ?
174 clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD) :
175 clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
176 outer->priority_cfi_and_id =
177 clib_host_to_net_u16 (sub_sw->sub.eth.outer_vlan_id);
178 outer->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
179 inner->priority_cfi_and_id =
180 clib_host_to_net_u16 (sub_sw->sub.eth.inner_vlan_id);
181 inner->type = clib_host_to_net_u16 (type);
186 h->type = clib_host_to_net_u16 (type);
193 ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
199 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
200 if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
202 default_update_adjacency (vnm, sw_if_index, ai);
204 else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
206 arp_update_adjacency (vnm, sw_if_index, ai);
208 else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto)
210 ip6_ethernet_update_adjacency (vnm, sw_if_index, ai);
218 static clib_error_t *
219 ethernet_mac_change (vnet_hw_interface_t * hi, char *mac_address)
221 ethernet_interface_t *ei;
225 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
227 vec_validate (hi->hw_address,
228 STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1);
229 clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
231 clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
232 ethernet_arp_change_mac (hi->sw_if_index);
233 ethernet_ndp_change_mac (hi->sw_if_index);
239 VNET_HW_INTERFACE_CLASS (ethernet_hw_interface_class) = {
241 .format_address = format_ethernet_address,
242 .format_header = format_ethernet_header_with_length,
243 .unformat_hw_address = unformat_ethernet_address,
244 .unformat_header = unformat_ethernet_header,
245 .build_rewrite = ethernet_build_rewrite,
246 .update_adjacency = ethernet_update_adjacency,
247 .mac_addr_change_function = ethernet_mac_change,
252 unformat_ethernet_interface (unformat_input_t * input, va_list * args)
254 vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
255 u32 *result = va_arg (*args, u32 *);
257 ethernet_main_t *em = ðernet_main;
258 ethernet_interface_t *eif;
260 if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
263 eif = ethernet_get_interface (em, hw_if_index);
266 *result = hw_if_index;
273 ethernet_register_interface (vnet_main_t * vnm,
277 u32 * hw_if_index_return,
278 ethernet_flag_change_function_t flag_change)
280 ethernet_main_t *em = ðernet_main;
281 ethernet_interface_t *ei;
282 vnet_hw_interface_t *hi;
283 clib_error_t *error = 0;
286 pool_get (em->interfaces, ei);
287 ei->flag_change = flag_change;
289 hw_if_index = vnet_register_interface
291 dev_class_index, dev_instance,
292 ethernet_hw_interface_class.index, ei - em->interfaces);
293 *hw_if_index_return = hw_if_index;
295 hi = vnet_get_hw_interface (vnm, hw_if_index);
297 ethernet_setup_node (vnm->vlib_main, hi->output_node_index);
299 hi->min_packet_bytes = hi->min_supported_packet_bytes =
300 ETHERNET_MIN_PACKET_BYTES;
301 hi->max_packet_bytes = hi->max_supported_packet_bytes =
302 ETHERNET_MAX_PACKET_BYTES;
304 /* Standard default ethernet MTU. */
305 vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, 9000);
307 clib_memcpy (ei->address, address, sizeof (ei->address));
308 vec_add (hi->hw_address, address, sizeof (ei->address));
312 pool_put (em->interfaces, ei);
319 ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index)
321 ethernet_main_t *em = ðernet_main;
322 ethernet_interface_t *ei;
323 vnet_hw_interface_t *hi;
324 main_intf_t *main_intf;
325 vlan_table_t *vlan_table;
328 hi = vnet_get_hw_interface (vnm, hw_if_index);
329 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
331 /* Delete vlan mapping table for dot1q and dot1ad. */
332 main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
333 if (main_intf->dot1q_vlans)
335 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
336 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
338 if (vlan_table->vlans[idx].qinqs)
340 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
343 pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
344 main_intf->dot1q_vlans = 0;
346 if (main_intf->dot1ad_vlans)
348 vlan_table = vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
349 for (idx = 0; idx < ETHERNET_N_VLAN; idx++)
351 if (vlan_table->vlans[idx].qinqs)
353 pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
356 pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
357 main_intf->dot1ad_vlans = 0;
360 vnet_delete_hw_interface (vnm, hw_if_index);
361 pool_put (em->interfaces, ei);
365 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
367 ethernet_main_t *em = ðernet_main;
368 vnet_hw_interface_t *hi;
369 ethernet_interface_t *ei;
371 hi = vnet_get_hw_interface (vnm, hw_if_index);
373 ASSERT (hi->hw_class_index == ethernet_hw_interface_class.index);
375 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
377 return ei->flag_change (vnm, hi, flags);
381 /* Echo packets back to ethernet/l2-input. */
383 simulated_ethernet_interface_tx (vlib_main_t * vm,
384 vlib_node_runtime_t * node,
385 vlib_frame_t * frame)
387 u32 n_left_from, n_left_to_next, n_copy, *from, *to_next;
388 u32 next_index = VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
389 u32 i, next_node_index, bvi_flag, sw_if_index;
390 u32 n_pkts = 0, n_bytes = 0;
391 u32 thread_index = vm->thread_index;
392 vnet_main_t *vnm = vnet_get_main ();
393 vnet_interface_main_t *im = &vnm->interface_main;
394 vlib_node_main_t *nm = &vm->node_main;
395 vlib_node_t *loop_node;
398 // check tx node index, it is ethernet-input on loopback create
399 // but can be changed to l2-input if loopback is configured as
400 // BVI of a BD (Bridge Domain).
401 loop_node = vec_elt (nm->nodes, node->node_index);
402 next_node_index = loop_node->next_nodes[next_index];
403 bvi_flag = (next_node_index == l2input_node.index) ? 1 : 0;
405 n_left_from = frame->n_vectors;
406 from = vlib_frame_args (frame);
408 while (n_left_from > 0)
410 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
412 n_copy = clib_min (n_left_from, n_left_to_next);
414 clib_memcpy (to_next, from, n_copy * sizeof (from[0]));
415 n_left_to_next -= n_copy;
416 n_left_from -= n_copy;
418 b = vlib_get_buffer (vm, from[i]);
419 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
422 // Set up RX and TX indices as if received from a real driver
423 // unless loopback is used as a BVI. For BVI case, leave TX index
424 // and update l2_len in packet as required for l2 forwarding path
425 vnet_buffer (b)->sw_if_index[VLIB_RX] = sw_if_index;
428 vnet_update_l2_len (b);
429 vnet_buffer (b)->sw_if_index[VLIB_TX] = L2INPUT_BVI;
432 vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0;
436 n_bytes += vlib_buffer_length_in_chain (vm, b);
439 b = vlib_get_buffer (vm, from[i]);
445 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
447 /* increment TX interface stat */
448 vlib_increment_combined_counter (im->combined_sw_if_counters +
449 VNET_INTERFACE_COUNTER_TX,
450 thread_index, sw_if_index, n_pkts,
458 format_simulated_ethernet_name (u8 * s, va_list * args)
460 u32 dev_instance = va_arg (*args, u32);
461 return format (s, "loop%d", dev_instance);
464 static clib_error_t *
465 simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
468 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
469 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
470 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
475 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
477 .format_device_name = format_simulated_ethernet_name,
478 .tx_function = simulated_ethernet_interface_tx,
479 .admin_up_down_function = simulated_ethernet_admin_up_down,
485 * Maintain a bitmap of allocated loopback instance numbers.
487 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
490 loopback_instance_alloc (u8 is_specified, u32 want)
492 ethernet_main_t *em = ðernet_main;
495 * Check for dynamically allocaetd instance number.
501 bit = clib_bitmap_first_clear (em->bm_loopback_instances);
502 if (bit >= LOOPBACK_MAX_INSTANCE)
506 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
514 if (want >= LOOPBACK_MAX_INSTANCE)
522 if (clib_bitmap_get (em->bm_loopback_instances, want))
528 * Grant allocation request.
530 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
537 loopback_instance_free (u32 instance)
539 ethernet_main_t *em = ðernet_main;
541 if (instance >= LOOPBACK_MAX_INSTANCE)
546 if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
551 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
557 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
558 u8 is_specified, u32 user_instance)
560 vnet_main_t *vnm = vnet_get_main ();
561 vlib_main_t *vm = vlib_get_main ();
566 vnet_hw_interface_t *hw_if;
570 ASSERT (sw_if_indexp);
572 *sw_if_indexp = (u32) ~ 0;
574 memset (address, 0, sizeof (address));
577 * Allocate a loopback instance. Either select on dynamically
578 * or try to use the desired user_instance number.
580 instance = loopback_instance_alloc (is_specified, user_instance);
583 return VNET_API_ERROR_INVALID_REGISTRATION;
587 * Default MAC address (dead:0000:0000 + instance) is allocated
588 * if zero mac_address is configured. Otherwise, user-configurable MAC
589 * address is programmed on the loopback interface.
591 if (memcmp (address, mac_address, sizeof (address)))
592 clib_memcpy (address, mac_address, sizeof (address));
597 address[5] = instance;
600 error = ethernet_register_interface
602 ethernet_simulated_device_class.index, instance, address, &hw_if_index,
603 /* flag change */ 0);
607 rv = VNET_API_ERROR_INVALID_REGISTRATION;
608 clib_error_report (error);
612 hw_if = vnet_get_hw_interface (vnm, hw_if_index);
613 slot = vlib_node_add_named_next_with_slot
614 (vm, hw_if->tx_node_index,
615 "ethernet-input", VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
616 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
619 vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
620 *sw_if_indexp = si->sw_if_index;
622 /* By default don't flood to loopbacks, as packets just keep
623 * coming back ... If this loopback becomes a BVI, we'll change it */
624 si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD;
630 static clib_error_t *
631 create_simulated_ethernet_interfaces (vlib_main_t * vm,
632 unformat_input_t * input,
633 vlib_cli_command_t * cmd)
639 u32 user_instance = 0;
641 memset (mac_address, 0, sizeof (mac_address));
643 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
645 if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
647 if (unformat (input, "instance %d", &user_instance))
653 rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
654 is_specified, user_instance);
657 return clib_error_return (0, "vnet_create_loopback_interface failed");
659 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
665 * Create a loopback interface. Optionally, a MAC Address can be
666 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
669 * The following two command syntaxes are equivalent:
670 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
671 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
672 * Example of how to create a loopback interface:
673 * @cliexcmd{loopback create-interface}
676 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
677 .path = "loopback create-interface",
678 .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
679 .function = create_simulated_ethernet_interfaces,
684 * Create a loopback interface. Optionally, a MAC Address can be
685 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
688 * The following two command syntaxes are equivalent:
689 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
690 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
691 * Example of how to create a loopback interface:
692 * @cliexcmd{create loopback interface}
695 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
696 .path = "create loopback interface",
697 .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
698 .function = create_simulated_ethernet_interfaces,
702 ethernet_interface_t *
703 ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index)
705 vnet_hw_interface_t *i =
706 vnet_get_hw_interface (vnet_get_main (), hw_if_index);
707 return (i->hw_class_index ==
708 ethernet_hw_interface_class.
709 index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
713 vnet_delete_loopback_interface (u32 sw_if_index)
715 vnet_main_t *vnm = vnet_get_main ();
716 vnet_sw_interface_t *si;
718 vnet_hw_interface_t *hw;
721 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
722 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
724 si = vnet_get_sw_interface (vnm, sw_if_index);
725 hw_if_index = si->hw_if_index;
726 hw = vnet_get_hw_interface (vnm, hw_if_index);
727 instance = hw->dev_instance;
729 if (loopback_instance_free (instance) < 0)
731 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
734 ethernet_delete_interface (vnm, hw_if_index);
740 vnet_delete_sub_interface (u32 sw_if_index)
742 vnet_main_t *vnm = vnet_get_main ();
743 vnet_sw_interface_t *si;
746 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
747 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
749 si = vnet_get_sw_interface (vnm, sw_if_index);
750 if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
751 si->type == VNET_SW_INTERFACE_TYPE_P2P)
753 vnet_interface_main_t *im = &vnm->interface_main;
754 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
755 u64 sup_and_sub_key =
756 ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
757 hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
758 hash_unset (hi->sub_interface_sw_if_index_by_id, si->sub.id);
759 vnet_delete_sw_interface (vnm, sw_if_index);
762 rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
767 static clib_error_t *
768 delete_simulated_ethernet_interfaces (vlib_main_t * vm,
769 unformat_input_t * input,
770 vlib_cli_command_t * cmd)
773 u32 sw_if_index = ~0;
774 vnet_main_t *vnm = vnet_get_main ();
776 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
778 if (unformat (input, "intfc %U",
779 unformat_vnet_sw_interface, vnm, &sw_if_index))
785 if (sw_if_index == ~0)
786 return clib_error_return (0, "interface not specified");
788 rv = vnet_delete_loopback_interface (sw_if_index);
791 return clib_error_return (0, "vnet_delete_loopback_interface failed");
796 static clib_error_t *
797 delete_sub_interface (vlib_main_t * vm,
798 unformat_input_t * input, vlib_cli_command_t * cmd)
801 u32 sw_if_index = ~0;
802 vnet_main_t *vnm = vnet_get_main ();
804 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
807 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
812 if (sw_if_index == ~0)
813 return clib_error_return (0, "interface doesn't exist");
815 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
816 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
818 rv = vnet_delete_sub_interface (sw_if_index);
820 return clib_error_return (0, "delete_subinterface_interface failed");
825 * Delete a loopback interface.
828 * The following two command syntaxes are equivalent:
829 * @cliexcmd{loopback delete-interface intfc <interface>}
830 * @cliexcmd{delete loopback interface intfc <interface>}
831 * Example of how to delete a loopback interface:
832 * @cliexcmd{loopback delete-interface intfc loop0}
835 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
836 .path = "loopback delete-interface",
837 .short_help = "loopback delete-interface intfc <interface>",
838 .function = delete_simulated_ethernet_interfaces,
843 * Delete a loopback interface.
846 * The following two command syntaxes are equivalent:
847 * @cliexcmd{loopback delete-interface intfc <interface>}
848 * @cliexcmd{delete loopback interface intfc <interface>}
849 * Example of how to delete a loopback interface:
850 * @cliexcmd{delete loopback interface intfc loop0}
853 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
854 .path = "delete loopback interface",
855 .short_help = "delete loopback interface intfc <interface>",
856 .function = delete_simulated_ethernet_interfaces,
861 * Delete a sub-interface.
864 * Example of how to delete a sub-interface:
865 * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
868 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
869 .path = "delete sub-interface",
870 .short_help = "delete sub-interface <interface>",
871 .function = delete_sub_interface,
876 * fd.io coding-style-patch-verification: ON
879 * eval: (c-set-style "gnu")