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;
303 hi->per_packet_overhead_bytes =
304 /* preamble */ 8 + /* inter frame gap */ 12;
306 /* Standard default ethernet MTU. */
307 hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 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);
383 /* Echo packets back to ethernet/l2-input. */
385 simulated_ethernet_interface_tx (vlib_main_t * vm,
386 vlib_node_runtime_t * node,
387 vlib_frame_t * frame)
389 u32 n_left_from, n_left_to_next, n_copy, *from, *to_next;
390 u32 next_index = VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
391 u32 i, next_node_index, bvi_flag, sw_if_index;
392 u32 n_pkts = 0, n_bytes = 0;
393 u32 thread_index = vm->thread_index;
394 vnet_main_t *vnm = vnet_get_main ();
395 vnet_interface_main_t *im = &vnm->interface_main;
396 vlib_node_main_t *nm = &vm->node_main;
397 vlib_node_t *loop_node;
400 // check tx node index, it is ethernet-input on loopback create
401 // but can be changed to l2-input if loopback is configured as
402 // BVI of a BD (Bridge Domain).
403 loop_node = vec_elt (nm->nodes, node->node_index);
404 next_node_index = loop_node->next_nodes[next_index];
405 bvi_flag = (next_node_index == l2input_node.index) ? 1 : 0;
407 n_left_from = frame->n_vectors;
408 from = vlib_frame_args (frame);
410 while (n_left_from > 0)
412 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
414 n_copy = clib_min (n_left_from, n_left_to_next);
416 clib_memcpy (to_next, from, n_copy * sizeof (from[0]));
417 n_left_to_next -= n_copy;
418 n_left_from -= n_copy;
420 b = vlib_get_buffer (vm, from[i]);
421 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
424 // Set up RX and TX indices as if received from a real driver
425 // unless loopback is used as a BVI. For BVI case, leave TX index
426 // and update l2_len in packet as required for l2 forwarding path
427 vnet_buffer (b)->sw_if_index[VLIB_RX] = sw_if_index;
430 vnet_update_l2_len (b);
431 vnet_buffer (b)->sw_if_index[VLIB_TX] = L2INPUT_BVI;
434 vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0;
438 n_bytes += vlib_buffer_length_in_chain (vm, b);
441 b = vlib_get_buffer (vm, from[i]);
447 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
449 /* increment TX interface stat */
450 vlib_increment_combined_counter (im->combined_sw_if_counters +
451 VNET_INTERFACE_COUNTER_TX,
452 thread_index, sw_if_index, n_pkts,
460 format_simulated_ethernet_name (u8 * s, va_list * args)
462 u32 dev_instance = va_arg (*args, u32);
463 return format (s, "loop%d", dev_instance);
466 static clib_error_t *
467 simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
470 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
471 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
472 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
477 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
479 .format_device_name = format_simulated_ethernet_name,
480 .tx_function = simulated_ethernet_interface_tx,
481 .admin_up_down_function = simulated_ethernet_admin_up_down,
487 * Maintain a bitmap of allocated loopback instance numbers.
489 #define LOOPBACK_MAX_INSTANCE (16 * 1024)
492 loopback_instance_alloc (u8 is_specified, u32 want)
494 ethernet_main_t *em = ðernet_main;
497 * Check for dynamically allocaetd instance number.
503 bit = clib_bitmap_first_clear (em->bm_loopback_instances);
504 if (bit >= LOOPBACK_MAX_INSTANCE)
508 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
516 if (want >= LOOPBACK_MAX_INSTANCE)
524 if (clib_bitmap_get (em->bm_loopback_instances, want))
530 * Grant allocation request.
532 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
539 loopback_instance_free (u32 instance)
541 ethernet_main_t *em = ðernet_main;
543 if (instance >= LOOPBACK_MAX_INSTANCE)
548 if (clib_bitmap_get (em->bm_loopback_instances, instance) == 0)
553 em->bm_loopback_instances = clib_bitmap_set (em->bm_loopback_instances,
559 vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
560 u8 is_specified, u32 user_instance)
562 vnet_main_t *vnm = vnet_get_main ();
563 vlib_main_t *vm = vlib_get_main ();
568 vnet_hw_interface_t *hw_if;
572 ASSERT (sw_if_indexp);
574 *sw_if_indexp = (u32) ~ 0;
576 memset (address, 0, sizeof (address));
579 * Allocate a loopback instance. Either select on dynamically
580 * or try to use the desired user_instance number.
582 instance = loopback_instance_alloc (is_specified, user_instance);
585 return VNET_API_ERROR_INVALID_REGISTRATION;
589 * Default MAC address (dead:0000:0000 + instance) is allocated
590 * if zero mac_address is configured. Otherwise, user-configurable MAC
591 * address is programmed on the loopback interface.
593 if (memcmp (address, mac_address, sizeof (address)))
594 clib_memcpy (address, mac_address, sizeof (address));
599 address[5] = instance;
602 error = ethernet_register_interface
604 ethernet_simulated_device_class.index, instance, address, &hw_if_index,
605 /* flag change */ 0);
609 rv = VNET_API_ERROR_INVALID_REGISTRATION;
610 clib_error_report (error);
614 hw_if = vnet_get_hw_interface (vnm, hw_if_index);
615 slot = vlib_node_add_named_next_with_slot
616 (vm, hw_if->tx_node_index,
617 "ethernet-input", VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
618 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
621 vnet_sw_interface_t *si = vnet_get_hw_sw_interface (vnm, hw_if_index);
622 *sw_if_indexp = si->sw_if_index;
624 /* By default don't flood to loopbacks, as packets just keep
625 * coming back ... If this loopback becomes a BVI, we'll change it */
626 si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD;
632 static clib_error_t *
633 create_simulated_ethernet_interfaces (vlib_main_t * vm,
634 unformat_input_t * input,
635 vlib_cli_command_t * cmd)
641 u32 user_instance = 0;
643 memset (mac_address, 0, sizeof (mac_address));
645 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
647 if (unformat (input, "mac %U", unformat_ethernet_address, mac_address))
649 if (unformat (input, "instance %d", &user_instance))
655 rv = vnet_create_loopback_interface (&sw_if_index, mac_address,
656 is_specified, user_instance);
659 return clib_error_return (0, "vnet_create_loopback_interface failed");
661 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
667 * Create a loopback interface. Optionally, a MAC Address can be
668 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
671 * The following two command syntaxes are equivalent:
672 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
673 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
674 * Example of how to create a loopback interface:
675 * @cliexcmd{loopback create-interface}
678 VLIB_CLI_COMMAND (create_simulated_ethernet_interface_command, static) = {
679 .path = "loopback create-interface",
680 .short_help = "loopback create-interface [mac <mac-addr>] [instance <instance>]",
681 .function = create_simulated_ethernet_interfaces,
686 * Create a loopback interface. Optionally, a MAC Address can be
687 * provided. If not provided, de:ad:00:00:00:<loopId> will be used.
690 * The following two command syntaxes are equivalent:
691 * @cliexcmd{loopback create-interface [mac <mac-addr>] [instance <instance>]}
692 * @cliexcmd{create loopback interface [mac <mac-addr>] [instance <instance>]}
693 * Example of how to create a loopback interface:
694 * @cliexcmd{create loopback interface}
697 VLIB_CLI_COMMAND (create_loopback_interface_command, static) = {
698 .path = "create loopback interface",
699 .short_help = "create loopback interface [mac <mac-addr>] [instance <instance>]",
700 .function = create_simulated_ethernet_interfaces,
704 ethernet_interface_t *
705 ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index)
707 vnet_hw_interface_t *i =
708 vnet_get_hw_interface (vnet_get_main (), hw_if_index);
709 return (i->hw_class_index ==
710 ethernet_hw_interface_class.
711 index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
715 vnet_delete_loopback_interface (u32 sw_if_index)
717 vnet_main_t *vnm = vnet_get_main ();
718 vnet_sw_interface_t *si;
720 vnet_hw_interface_t *hw;
723 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
724 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
726 si = vnet_get_sw_interface (vnm, sw_if_index);
727 hw_if_index = si->hw_if_index;
728 hw = vnet_get_hw_interface (vnm, hw_if_index);
729 instance = hw->dev_instance;
731 if (loopback_instance_free (instance) < 0)
733 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
736 ethernet_delete_interface (vnm, hw_if_index);
742 vnet_delete_sub_interface (u32 sw_if_index)
744 vnet_main_t *vnm = vnet_get_main ();
745 vnet_sw_interface_t *si;
748 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
749 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
751 si = vnet_get_sw_interface (vnm, sw_if_index);
752 if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
753 si->type == VNET_SW_INTERFACE_TYPE_P2P)
755 vnet_interface_main_t *im = &vnm->interface_main;
756 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
757 u64 sup_and_sub_key =
758 ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
759 hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
760 hash_unset (hi->sub_interface_sw_if_index_by_id, si->sub.id);
761 vnet_delete_sw_interface (vnm, sw_if_index);
764 rv = VNET_API_ERROR_INVALID_SUB_SW_IF_INDEX;
769 static clib_error_t *
770 delete_simulated_ethernet_interfaces (vlib_main_t * vm,
771 unformat_input_t * input,
772 vlib_cli_command_t * cmd)
775 u32 sw_if_index = ~0;
776 vnet_main_t *vnm = vnet_get_main ();
778 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
780 if (unformat (input, "intfc %U",
781 unformat_vnet_sw_interface, vnm, &sw_if_index))
787 if (sw_if_index == ~0)
788 return clib_error_return (0, "interface not specified");
790 rv = vnet_delete_loopback_interface (sw_if_index);
793 return clib_error_return (0, "vnet_delete_loopback_interface failed");
798 static clib_error_t *
799 delete_sub_interface (vlib_main_t * vm,
800 unformat_input_t * input, vlib_cli_command_t * cmd)
803 u32 sw_if_index = ~0;
804 vnet_main_t *vnm = vnet_get_main ();
806 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
809 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
814 if (sw_if_index == ~0)
815 return clib_error_return (0, "interface doesn't exist");
817 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
818 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
820 rv = vnet_delete_sub_interface (sw_if_index);
822 return clib_error_return (0, "delete_subinterface_interface failed");
827 * Delete a loopback interface.
830 * The following two command syntaxes are equivalent:
831 * @cliexcmd{loopback delete-interface intfc <interface>}
832 * @cliexcmd{delete loopback interface intfc <interface>}
833 * Example of how to delete a loopback interface:
834 * @cliexcmd{loopback delete-interface intfc loop0}
837 VLIB_CLI_COMMAND (delete_simulated_ethernet_interface_command, static) = {
838 .path = "loopback delete-interface",
839 .short_help = "loopback delete-interface intfc <interface>",
840 .function = delete_simulated_ethernet_interfaces,
845 * Delete a loopback interface.
848 * The following two command syntaxes are equivalent:
849 * @cliexcmd{loopback delete-interface intfc <interface>}
850 * @cliexcmd{delete loopback interface intfc <interface>}
851 * Example of how to delete a loopback interface:
852 * @cliexcmd{delete loopback interface intfc loop0}
855 VLIB_CLI_COMMAND (delete_loopback_interface_command, static) = {
856 .path = "delete loopback interface",
857 .short_help = "delete loopback interface intfc <interface>",
858 .function = delete_simulated_ethernet_interfaces,
863 * Delete a sub-interface.
866 * Example of how to delete a sub-interface:
867 * @cliexcmd{delete sub-interface GigabitEthernet0/8/0.200}
870 VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
871 .path = "delete sub-interface",
872 .short_help = "delete sub-interface <interface>",
873 .function = delete_sub_interface,
878 * fd.io coding-style-patch-verification: ON
881 * eval: (c-set-style "gnu")