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 * interface.c: VNET interfaces/sub-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/plugin/plugin.h>
42 #include <vnet/fib/ip6_fib.h>
43 #include <vnet/adj/adj.h>
45 #define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0)
46 #define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1)
48 static clib_error_t *vnet_hw_interface_set_flags_helper (vnet_main_t * vnm,
53 static clib_error_t *vnet_sw_interface_set_flags_helper (vnet_main_t * vnm,
58 static clib_error_t *vnet_hw_interface_set_class_helper (vnet_main_t * vnm,
65 /* Either sw or hw interface index. */
70 } vnet_sw_hw_interface_state_t;
73 serialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m, va_list * va)
75 vnet_sw_hw_interface_state_t *s =
76 va_arg (*va, vnet_sw_hw_interface_state_t *);
77 u32 n = va_arg (*va, u32);
79 for (i = 0; i < n; i++)
81 serialize_integer (m, s[i].sw_hw_if_index,
82 sizeof (s[i].sw_hw_if_index));
83 serialize_integer (m, s[i].flags, sizeof (s[i].flags));
88 unserialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m,
91 vnet_sw_hw_interface_state_t *s =
92 va_arg (*va, vnet_sw_hw_interface_state_t *);
93 u32 n = va_arg (*va, u32);
95 for (i = 0; i < n; i++)
97 unserialize_integer (m, &s[i].sw_hw_if_index,
98 sizeof (s[i].sw_hw_if_index));
99 unserialize_integer (m, &s[i].flags, sizeof (s[i].flags));
104 serialize_vnet_sw_hw_interface_set_flags (serialize_main_t * m, va_list * va)
106 vnet_sw_hw_interface_state_t *s =
107 va_arg (*va, vnet_sw_hw_interface_state_t *);
108 serialize (m, serialize_vec_vnet_sw_hw_interface_state, s, 1);
112 unserialize_vnet_sw_interface_set_flags (serialize_main_t * m, va_list * va)
114 CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
115 vnet_sw_hw_interface_state_t s;
117 unserialize (m, unserialize_vec_vnet_sw_hw_interface_state, &s, 1);
119 vnet_sw_interface_set_flags_helper
120 (vnet_get_main (), s.sw_hw_if_index, s.flags,
121 /* helper_flags no redistribution */ 0);
125 unserialize_vnet_hw_interface_set_flags (serialize_main_t * m, va_list * va)
127 CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
128 vnet_sw_hw_interface_state_t s;
130 unserialize (m, unserialize_vec_vnet_sw_hw_interface_state, &s, 1);
132 vnet_hw_interface_set_flags_helper
133 (vnet_get_main (), s.sw_hw_if_index, s.flags,
134 /* helper_flags no redistribution */ 0);
137 MC_SERIALIZE_MSG (vnet_sw_interface_set_flags_msg, static) =
139 .name = "vnet_sw_interface_set_flags",.serialize =
140 serialize_vnet_sw_hw_interface_set_flags,.unserialize =
141 unserialize_vnet_sw_interface_set_flags,};
143 MC_SERIALIZE_MSG (vnet_hw_interface_set_flags_msg, static) =
145 .name = "vnet_hw_interface_set_flags",.serialize =
146 serialize_vnet_sw_hw_interface_set_flags,.unserialize =
147 unserialize_vnet_hw_interface_set_flags,};
150 serialize_vnet_interface_state (serialize_main_t * m, va_list * va)
152 vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
153 vnet_sw_hw_interface_state_t *sts = 0, *st;
154 vnet_sw_interface_t *sif;
155 vnet_hw_interface_t *hif;
156 vnet_interface_main_t *im = &vnm->interface_main;
158 /* Serialize hardware interface classes since they may have changed.
159 Must do this before sending up/down flags. */
161 pool_foreach (hif, im->hw_interfaces, ({
162 vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hif->hw_class_index);
163 serialize_cstring (m, hw_class->name);
167 /* Send sw/hw interface state when non-zero. */
169 pool_foreach (sif, im->sw_interfaces, ({
172 vec_add2 (sts, st, 1);
173 st->sw_hw_if_index = sif->sw_if_index;
174 st->flags = sif->flags;
179 vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);
185 pool_foreach (hif, im->hw_interfaces, ({
188 vec_add2 (sts, st, 1);
189 st->sw_hw_if_index = hif->hw_if_index;
190 st->flags = hif->flags;
195 vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);
201 unserialize_vnet_interface_state (serialize_main_t * m, va_list * va)
203 vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
204 vnet_sw_hw_interface_state_t *sts = 0, *st;
206 /* First set interface hardware class. */
208 vnet_interface_main_t *im = &vnm->interface_main;
209 vnet_hw_interface_t *hif;
215 pool_foreach (hif, im->hw_interfaces, ({
216 unserialize_cstring (m, &class_name);
217 p = hash_get_mem (im->hw_interface_class_by_name, class_name);
219 error = vnet_hw_interface_set_class_helper (vnm, hif->hw_if_index, p[0], /* redistribute */ 0);
221 clib_error_report (error);
222 vec_free (class_name);
227 vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
228 vec_foreach (st, sts)
229 vnet_sw_interface_set_flags_helper (vnm, st->sw_hw_if_index, st->flags,
230 /* no distribute */ 0);
233 vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
234 vec_foreach (st, sts)
235 vnet_hw_interface_set_flags_helper (vnm, st->sw_hw_if_index, st->flags,
236 /* no distribute */ 0);
240 static clib_error_t *
241 call_elf_section_interface_callbacks (vnet_main_t * vnm, u32 if_index,
243 _vnet_interface_function_list_elt_t **
246 _vnet_interface_function_list_elt_t *elt;
247 vnet_interface_function_priority_t prio;
248 clib_error_t *error = 0;
250 for (prio = VNET_ITF_FUNC_PRIORITY_LOW;
251 prio <= VNET_ITF_FUNC_PRIORITY_HIGH; prio++)
257 error = elt->fp (vnm, if_index, flags);
260 elt = elt->next_interface_function;
266 static clib_error_t *
267 call_hw_interface_add_del_callbacks (vnet_main_t * vnm, u32 hw_if_index,
270 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
271 vnet_hw_interface_class_t *hw_class =
272 vnet_get_hw_interface_class (vnm, hi->hw_class_index);
273 vnet_device_class_t *dev_class =
274 vnet_get_device_class (vnm, hi->dev_class_index);
275 clib_error_t *error = 0;
277 if (hw_class->interface_add_del_function
279 hw_class->interface_add_del_function (vnm, hw_if_index, is_create)))
282 if (dev_class->interface_add_del_function
284 dev_class->interface_add_del_function (vnm, hw_if_index,
288 error = call_elf_section_interface_callbacks
289 (vnm, hw_if_index, is_create, vnm->hw_interface_add_del_functions);
294 static clib_error_t *
295 call_sw_interface_add_del_callbacks (vnet_main_t * vnm, u32 sw_if_index,
298 return call_elf_section_interface_callbacks
299 (vnm, sw_if_index, is_create, vnm->sw_interface_add_del_functions);
302 #define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0)
303 #define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1)
305 static clib_error_t *
306 vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, u32 hw_if_index,
307 u32 flags, u32 helper_flags)
309 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
310 vnet_hw_interface_class_t *hw_class =
311 vnet_get_hw_interface_class (vnm, hi->hw_class_index);
312 vnet_device_class_t *dev_class =
313 vnet_get_device_class (vnm, hi->dev_class_index);
314 vlib_main_t *vm = vnm->vlib_main;
316 clib_error_t *error = 0;
318 (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
321 (VNET_HW_INTERFACE_FLAG_LINK_UP | VNET_HW_INTERFACE_FLAG_DUPLEX_MASK |
322 VNET_HW_INTERFACE_FLAG_SPEED_MASK);
325 /* Call hardware interface add/del callbacks. */
327 call_hw_interface_add_del_callbacks (vnm, hw_if_index, is_create);
329 /* Already in the desired state? */
330 if (!is_create && (hi->flags & mask) == flags)
333 /* Some interface classes do not redistribute (e.g. are local). */
334 if (!dev_class->redistribute)
335 helper_flags &= ~VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE;
338 && (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE))
340 vnet_sw_hw_interface_state_t s;
341 s.sw_hw_if_index = hw_if_index;
343 mc_serialize (vm->mc_main, &vnet_hw_interface_set_flags_msg, &s);
346 if ((hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) !=
347 (flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
349 /* Do hardware class (e.g. ethernet). */
350 if (hw_class->link_up_down_function
351 && (error = hw_class->link_up_down_function (vnm, hw_if_index,
355 error = call_elf_section_interface_callbacks
356 (vnm, hw_if_index, flags, vnm->hw_interface_link_up_down_functions);
369 static clib_error_t *
370 vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, u32 sw_if_index,
371 u32 flags, u32 helper_flags)
373 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
374 vlib_main_t *vm = vnm->vlib_main;
376 clib_error_t *error = 0;
378 (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
381 mask = VNET_SW_INTERFACE_FLAG_ADMIN_UP | VNET_SW_INTERFACE_FLAG_PUNT;
387 call_sw_interface_add_del_callbacks (vnm, sw_if_index, is_create);
391 if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
393 /* Notify everyone when the interface is created as admin up */
394 error = call_elf_section_interface_callbacks (vnm, sw_if_index,
397 sw_interface_admin_up_down_functions);
404 vnet_sw_interface_t *si_sup = si;
406 /* Check that super interface is in correct state. */
407 if (si->type == VNET_SW_INTERFACE_TYPE_SUB)
409 si_sup = vnet_get_sw_interface (vnm, si->sup_sw_if_index);
411 /* Check to see if we're bringing down the soft interface and if it's parent is up */
412 if ((flags != (si_sup->flags & mask)) &&
414 && ((si_sup->flags & mask) ==
415 VNET_SW_INTERFACE_FLAG_ADMIN_UP))))
417 error = clib_error_return (0, "super-interface %U must be %U",
418 format_vnet_sw_interface_name, vnm,
420 format_vnet_sw_interface_flags,
426 /* Donot change state for slave link of bonded interfaces */
427 if (si->flags & VNET_SW_INTERFACE_FLAG_BOND_SLAVE)
429 error = clib_error_return
430 (0, "not allowed as %U belong to a BondEthernet interface",
431 format_vnet_sw_interface_name, vnm, si);
435 /* Already in the desired state? */
436 if ((si->flags & mask) == flags)
439 /* Sub-interfaces of hardware interfaces that do no redistribute,
440 do not redistribute themselves. */
441 if (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
443 vnet_hw_interface_t *hi =
444 vnet_get_hw_interface (vnm, si_sup->hw_if_index);
445 vnet_device_class_t *dev_class =
446 vnet_get_device_class (vnm, hi->dev_class_index);
447 if (!dev_class->redistribute)
449 ~VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE;
454 VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE))
456 vnet_sw_hw_interface_state_t s;
457 s.sw_hw_if_index = sw_if_index;
459 mc_serialize (vm->mc_main, &vnet_sw_interface_set_flags_msg, &s);
462 /* set the flags now before invoking the registered clients
463 * so that the state they query is consistent with the state here notified */
464 old_flags = si->flags;
467 if ((flags | old_flags) & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
468 error = call_elf_section_interface_callbacks
469 (vnm, sw_if_index, flags,
470 vnm->sw_interface_admin_up_down_functions);
471 si->flags = old_flags;
476 if (si->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
478 vnet_hw_interface_t *hi =
479 vnet_get_hw_interface (vnm, si->hw_if_index);
480 vnet_hw_interface_class_t *hw_class =
481 vnet_get_hw_interface_class (vnm, hi->hw_class_index);
482 vnet_device_class_t *dev_class =
483 vnet_get_device_class (vnm, hi->dev_class_index);
485 /* save the si admin up flag */
486 old_flags = si->flags;
488 /* update si admin up flag in advance if we are going admin down */
489 if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
490 si->flags &= ~VNET_SW_INTERFACE_FLAG_ADMIN_UP;
492 if (dev_class->admin_up_down_function
493 && (error = dev_class->admin_up_down_function (vnm,
497 /* restore si admin up flag to it's original state on errors */
498 si->flags = old_flags;
502 if (hw_class->admin_up_down_function
503 && (error = hw_class->admin_up_down_function (vnm,
507 /* restore si admin up flag to it's original state on errors */
508 si->flags = old_flags;
512 /* Admin down implies link down. */
513 if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
514 && (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
515 vnet_hw_interface_set_flags_helper (vnm, si->hw_if_index,
517 ~VNET_HW_INTERFACE_FLAG_LINK_UP,
530 vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
532 return vnet_hw_interface_set_flags_helper
533 (vnm, hw_if_index, flags,
534 VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
538 vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
540 return vnet_sw_interface_set_flags_helper
541 (vnm, sw_if_index, flags,
542 VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
546 vnet_create_sw_interface_no_callbacks (vnet_main_t * vnm,
547 vnet_sw_interface_t * template)
549 vnet_interface_main_t *im = &vnm->interface_main;
550 vnet_sw_interface_t *sw;
553 pool_get (im->sw_interfaces, sw);
554 sw_if_index = sw - im->sw_interfaces;
559 sw->sw_if_index = sw_if_index;
560 if (sw->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
561 sw->sup_sw_if_index = sw->sw_if_index;
563 /* Allocate counters for this interface. */
567 vnet_interface_counter_lock (im);
569 for (i = 0; i < vec_len (im->sw_if_counters); i++)
571 vlib_validate_simple_counter (&im->sw_if_counters[i], sw_if_index);
572 vlib_zero_simple_counter (&im->sw_if_counters[i], sw_if_index);
575 for (i = 0; i < vec_len (im->combined_sw_if_counters); i++)
577 vlib_validate_combined_counter (&im->combined_sw_if_counters[i],
579 vlib_zero_combined_counter (&im->combined_sw_if_counters[i],
583 vnet_interface_counter_unlock (im);
590 vnet_create_sw_interface (vnet_main_t * vnm, vnet_sw_interface_t * template,
594 vnet_hw_interface_t *hi;
595 vnet_device_class_t *dev_class;
597 hi = vnet_get_sup_hw_interface (vnm, template->sup_sw_if_index);
598 dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
600 if (template->type == VNET_SW_INTERFACE_TYPE_SUB &&
601 dev_class->subif_add_del_function)
603 error = dev_class->subif_add_del_function (vnm, hi->hw_if_index,
604 (struct vnet_sw_interface_t
610 *sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, template);
611 error = vnet_sw_interface_set_flags_helper
612 (vnm, *sw_if_index, template->flags,
613 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
617 /* undo the work done by vnet_create_sw_interface_no_callbacks() */
618 vnet_interface_main_t *im = &vnm->interface_main;
619 vnet_sw_interface_t *sw =
620 pool_elt_at_index (im->sw_interfaces, *sw_if_index);
621 pool_put (im->sw_interfaces, sw);
628 vnet_delete_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
630 vnet_interface_main_t *im = &vnm->interface_main;
631 vnet_sw_interface_t *sw =
632 pool_elt_at_index (im->sw_interfaces, sw_if_index);
634 /* Make sure the interface is in L3 mode (removed from L2 BD or XConnect) */
635 vlib_main_t *vm = vlib_get_main ();
636 l2_input_config_t *config;
637 config = vec_elt_at_index (l2input_main.configs, sw_if_index);
638 if (config->xconnect)
639 set_int_l2_mode (vm, vnm, MODE_L3, config->output_sw_if_index, 0, 0, 0,
641 if (config->xconnect || config->bridge)
642 set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0);
644 /* Bring down interface in case it is up. */
646 vnet_sw_interface_set_flags (vnm, sw_if_index, /* flags */ 0);
648 call_sw_interface_add_del_callbacks (vnm, sw_if_index, /* is_create */ 0);
650 pool_put (im->sw_interfaces, sw);
654 setup_tx_node (vlib_main_t * vm,
655 u32 node_index, vnet_device_class_t * dev_class)
657 vlib_node_t *n = vlib_get_node (vm, node_index);
659 n->function = dev_class->tx_function;
660 n->format_trace = dev_class->format_tx_trace;
662 vlib_register_errors (vm, node_index,
663 dev_class->tx_function_n_errors,
664 dev_class->tx_function_error_strings);
668 setup_output_node (vlib_main_t * vm,
669 u32 node_index, vnet_hw_interface_class_t * hw_class)
671 vlib_node_t *n = vlib_get_node (vm, node_index);
672 n->format_buffer = hw_class->format_header;
673 n->unformat_buffer = hw_class->unformat_header;
676 /* Register an interface instance. */
678 vnet_register_interface (vnet_main_t * vnm,
681 u32 hw_class_index, u32 hw_instance)
683 vnet_interface_main_t *im = &vnm->interface_main;
684 vnet_hw_interface_t *hw;
685 vnet_device_class_t *dev_class =
686 vnet_get_device_class (vnm, dev_class_index);
687 vnet_hw_interface_class_t *hw_class =
688 vnet_get_hw_interface_class (vnm, hw_class_index);
689 vlib_main_t *vm = vnm->vlib_main;
691 char *tx_node_name, *output_node_name;
693 pool_get (im->hw_interfaces, hw);
695 hw_index = hw - im->hw_interfaces;
696 hw->hw_if_index = hw_index;
698 if (dev_class->format_device_name)
699 hw->name = format (0, "%U", dev_class->format_device_name, dev_instance);
700 else if (hw_class->format_interface_name)
701 hw->name = format (0, "%U", hw_class->format_interface_name,
704 hw->name = format (0, "%s%x", hw_class->name, dev_instance);
706 if (!im->hw_interface_by_name)
707 im->hw_interface_by_name = hash_create_vec ( /* size */ 0,
708 sizeof (hw->name[0]),
711 hash_set_mem (im->hw_interface_by_name, hw->name, hw_index);
713 /* Make hardware interface point to software interface. */
715 vnet_sw_interface_t sw = {
716 .type = VNET_SW_INTERFACE_TYPE_HARDWARE,
717 .flood_class = VNET_FLOOD_CLASS_NORMAL,
718 .hw_if_index = hw_index
720 hw->sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, &sw);
723 hw->dev_class_index = dev_class_index;
724 hw->dev_instance = dev_instance;
725 hw->hw_class_index = hw_class_index;
726 hw->hw_instance = hw_instance;
728 hw->max_rate_bits_per_sec = 0;
729 hw->min_packet_bytes = 0;
730 hw->per_packet_overhead_bytes = 0;
731 hw->max_l3_packet_bytes[VLIB_RX] = ~0;
732 hw->max_l3_packet_bytes[VLIB_TX] = ~0;
734 tx_node_name = (char *) format (0, "%v-tx", hw->name);
735 output_node_name = (char *) format (0, "%v-output", hw->name);
737 /* If we have previously deleted interface nodes, re-use them. */
738 if (vec_len (im->deleted_hw_interface_nodes) > 0)
740 vnet_hw_interface_nodes_t *hn;
741 vnet_interface_output_runtime_t *rt;
743 vlib_node_runtime_t *nrt;
745 hn = vec_end (im->deleted_hw_interface_nodes) - 1;
747 hw->tx_node_index = hn->tx_node_index;
748 hw->output_node_index = hn->output_node_index;
750 vlib_node_rename (vm, hw->tx_node_index, "%v", tx_node_name);
751 vlib_node_rename (vm, hw->output_node_index, "%v", output_node_name);
753 rt = vlib_node_get_runtime_data (vm, hw->output_node_index);
754 ASSERT (rt->is_deleted == 1);
756 rt->hw_if_index = hw_index;
757 rt->sw_if_index = hw->sw_if_index;
758 rt->dev_instance = hw->dev_instance;
760 rt = vlib_node_get_runtime_data (vm, hw->tx_node_index);
761 rt->hw_if_index = hw_index;
762 rt->sw_if_index = hw->sw_if_index;
763 rt->dev_instance = hw->dev_instance;
765 /* The new class may differ from the old one.
766 * Functions have to be updated. */
767 node = vlib_get_node (vm, hw->output_node_index);
768 node->function = dev_class->no_flatten_output_chains ?
769 vnet_interface_output_node_no_flatten_multiarch_select () :
770 vnet_interface_output_node_multiarch_select ();
771 node->format_trace = format_vnet_interface_output_trace;
772 nrt = vlib_node_get_runtime (vm, hw->output_node_index);
773 nrt->function = node->function;
775 node = vlib_get_node (vm, hw->tx_node_index);
776 node->function = dev_class->tx_function;
777 node->format_trace = dev_class->format_tx_trace;
778 nrt = vlib_node_get_runtime (vm, hw->tx_node_index);
779 nrt->function = node->function;
781 vlib_worker_thread_node_runtime_update ();
782 _vec_len (im->deleted_hw_interface_nodes) -= 1;
786 vlib_node_registration_t r;
787 vnet_interface_output_runtime_t rt = {
788 .hw_if_index = hw_index,
789 .sw_if_index = hw->sw_if_index,
790 .dev_instance = hw->dev_instance,
794 memset (&r, 0, sizeof (r));
795 r.type = VLIB_NODE_TYPE_INTERNAL;
796 r.runtime_data = &rt;
797 r.runtime_data_bytes = sizeof (rt);
799 r.vector_size = sizeof (u32);
801 r.flags = VLIB_NODE_FLAG_IS_OUTPUT;
802 r.name = tx_node_name;
803 r.function = dev_class->tx_function;
805 hw->tx_node_index = vlib_register_node (vm, &r);
807 vlib_node_add_named_next_with_slot (vm, hw->tx_node_index,
809 VNET_INTERFACE_TX_NEXT_DROP);
812 r.name = output_node_name;
813 r.function = dev_class->no_flatten_output_chains ?
814 vnet_interface_output_node_no_flatten_multiarch_select () :
815 vnet_interface_output_node_multiarch_select ();
816 r.format_trace = format_vnet_interface_output_trace;
821 "interface is deleted",
824 r.n_errors = ARRAY_LEN (e);
827 hw->output_node_index = vlib_register_node (vm, &r);
829 vlib_node_add_named_next_with_slot (vm, hw->output_node_index,
831 VNET_INTERFACE_OUTPUT_NEXT_DROP);
832 vlib_node_add_next_with_slot (vm, hw->output_node_index,
834 VNET_INTERFACE_OUTPUT_NEXT_TX);
837 setup_output_node (vm, hw->output_node_index, hw_class);
838 setup_tx_node (vm, hw->tx_node_index, dev_class);
840 /* Call all up/down callbacks with zero flags when interface is created. */
841 vnet_sw_interface_set_flags_helper (vnm, hw->sw_if_index, /* flags */ 0,
842 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
843 vnet_hw_interface_set_flags_helper (vnm, hw_index, /* flags */ 0,
844 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
850 vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
852 vnet_interface_main_t *im = &vnm->interface_main;
853 vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
854 vlib_main_t *vm = vnm->vlib_main;
856 /* If it is up, mark it down. */
858 vnet_hw_interface_set_flags (vnm, hw_if_index, /* flags */ 0);
860 /* Call delete callbacks. */
861 call_hw_interface_add_del_callbacks (vnm, hw_if_index, /* is_create */ 0);
863 /* Delete software interface corresponding to hardware interface. */
864 vnet_delete_sw_interface (vnm, hw->sw_if_index);
866 /* Delete any sub-interfaces. */
870 hash_foreach (id, sw_if_index, hw->sub_interface_sw_if_index_by_id, ({
871 vnet_delete_sw_interface (vnm, sw_if_index);
877 vnet_hw_interface_nodes_t *dn;
878 vnet_interface_output_runtime_t *rt =
879 vlib_node_get_runtime_data (vm, hw->output_node_index);
881 /* Mark node runtime as deleted so output node (if called) will drop packets. */
884 vlib_node_rename (vm, hw->output_node_index,
885 "interface-%d-output-deleted", hw_if_index);
886 vlib_node_rename (vm, hw->tx_node_index, "interface-%d-tx-deleted",
888 vec_add2 (im->deleted_hw_interface_nodes, dn, 1);
889 dn->tx_node_index = hw->tx_node_index;
890 dn->output_node_index = hw->output_node_index;
893 hash_unset_mem (im->hw_interface_by_name, hw->name);
896 pool_put (im->hw_interfaces, hw);
900 vnet_hw_interface_walk_sw (vnet_main_t * vnm,
902 vnet_hw_sw_interface_walk_t fn, void *ctx)
904 vnet_hw_interface_t *hi;
907 hi = vnet_get_hw_interface (vnm, hw_if_index);
908 /* the super first, then the and sub interfaces */
909 fn (vnm, hi->sw_if_index, ctx);
912 hash_foreach (id, sw_if_index,
913 hi->sub_interface_sw_if_index_by_id,
915 fn (vnm, sw_if_index, ctx);
921 serialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va)
923 u32 hw_if_index = va_arg (*va, u32);
924 char *hw_class_name = va_arg (*va, char *);
925 serialize_integer (m, hw_if_index, sizeof (hw_if_index));
926 serialize_cstring (m, hw_class_name);
930 unserialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va)
932 CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
933 vnet_main_t *vnm = vnet_get_main ();
939 unserialize_integer (m, &hw_if_index, sizeof (hw_if_index));
940 unserialize_cstring (m, &hw_class_name);
942 hash_get (vnm->interface_main.hw_interface_class_by_name, hw_class_name);
944 error = vnet_hw_interface_set_class_helper (vnm, hw_if_index, p[0],
945 /* redistribute */ 0);
947 clib_error_report (error);
950 MC_SERIALIZE_MSG (vnet_hw_interface_set_class_msg, static) =
952 .name = "vnet_hw_interface_set_class",.serialize =
953 serialize_vnet_hw_interface_set_class,.unserialize =
954 unserialize_vnet_hw_interface_set_class,};
957 vnet_hw_interface_init_for_class (vnet_main_t * vnm, u32 hw_if_index,
958 u32 hw_class_index, u32 hw_instance)
960 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
961 vnet_hw_interface_class_t *hc =
962 vnet_get_hw_interface_class (vnm, hw_class_index);
964 hi->hw_class_index = hw_class_index;
965 hi->hw_instance = hw_instance;
966 setup_output_node (vnm->vlib_main, hi->output_node_index, hc);
969 static clib_error_t *
970 vnet_hw_interface_set_class_helper (vnet_main_t * vnm, u32 hw_if_index,
971 u32 hw_class_index, u32 redistribute)
973 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
974 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, hi->sw_if_index);
975 vnet_hw_interface_class_t *old_class =
976 vnet_get_hw_interface_class (vnm, hi->hw_class_index);
977 vnet_hw_interface_class_t *new_class =
978 vnet_get_hw_interface_class (vnm, hw_class_index);
979 vnet_device_class_t *dev_class =
980 vnet_get_device_class (vnm, hi->dev_class_index);
981 clib_error_t *error = 0;
983 /* New class equals old class? Nothing to do. */
984 if (hi->hw_class_index == hw_class_index)
987 /* No need (and incorrect since admin up flag may be set) to do error checking when
988 receiving unserialize message. */
991 if (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
992 return clib_error_return (0,
993 "%v must be admin down to change class from %s to %s",
994 hi->name, old_class->name, new_class->name);
996 /* Make sure interface supports given class. */
997 if ((new_class->is_valid_class_for_interface
998 && !new_class->is_valid_class_for_interface (vnm, hw_if_index,
1000 || (dev_class->is_valid_class_for_interface
1001 && !dev_class->is_valid_class_for_interface (vnm, hw_if_index,
1003 return clib_error_return (0,
1004 "%v class cannot be changed from %s to %s",
1005 hi->name, old_class->name, new_class->name);
1007 if (vnm->vlib_main->mc_main)
1009 mc_serialize (vnm->vlib_main->mc_main,
1010 &vnet_hw_interface_set_class_msg, hw_if_index,
1016 if (old_class->hw_class_change)
1017 old_class->hw_class_change (vnm, hw_if_index, old_class->index,
1020 vnet_hw_interface_init_for_class (vnm, hw_if_index, new_class->index,
1023 if (new_class->hw_class_change)
1024 new_class->hw_class_change (vnm, hw_if_index, old_class->index,
1027 if (dev_class->hw_class_change)
1028 dev_class->hw_class_change (vnm, hw_if_index, new_class->index);
1034 vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index,
1037 return vnet_hw_interface_set_class_helper (vnm, hw_if_index, hw_class_index,
1038 /* redistribute */ 1);
1042 vnet_hw_interface_rx_redirect_to_node_helper (vnet_main_t * vnm,
1047 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1048 vnet_device_class_t *dev_class = vnet_get_device_class
1049 (vnm, hi->dev_class_index);
1053 /* $$$$ fixme someday maybe */
1054 ASSERT (vnm->vlib_main->mc_main == 0);
1056 if (dev_class->rx_redirect_to_node)
1058 dev_class->rx_redirect_to_node (vnm, hw_if_index, node_index);
1062 return VNET_API_ERROR_UNIMPLEMENTED;
1066 vnet_hw_interface_rx_redirect_to_node (vnet_main_t * vnm, u32 hw_if_index,
1069 return vnet_hw_interface_rx_redirect_to_node_helper (vnm, hw_if_index,
1071 1 /* redistribute */ );
1075 vnet_sw_interface_compare (vnet_main_t * vnm,
1076 uword sw_if_index0, uword sw_if_index1)
1078 vnet_sw_interface_t *sup0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1079 vnet_sw_interface_t *sup1 = vnet_get_sup_sw_interface (vnm, sw_if_index1);
1080 vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, sup0->hw_if_index);
1081 vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, sup1->hw_if_index);
1084 return vec_cmp (h0->name, h1->name);
1085 return (word) h0->hw_instance - (word) h1->hw_instance;
1089 vnet_hw_interface_compare (vnet_main_t * vnm,
1090 uword hw_if_index0, uword hw_if_index1)
1092 vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, hw_if_index0);
1093 vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, hw_if_index1);
1096 return vec_cmp (h0->name, h1->name);
1097 return (word) h0->hw_instance - (word) h1->hw_instance;
1101 vnet_sw_interface_is_p2p (vnet_main_t * vnm, u32 sw_if_index)
1103 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
1104 vnet_hw_interface_class_t *hc =
1105 vnet_get_hw_interface_class (vnm, hw->hw_class_index);
1107 return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_P2P);
1111 vnet_interface_init (vlib_main_t * vm)
1113 vnet_main_t *vnm = vnet_get_main ();
1114 vnet_interface_main_t *im = &vnm->interface_main;
1115 vlib_buffer_t *b = 0;
1116 vnet_buffer_opaque_t *o = 0;
1119 * Keep people from shooting themselves in the foot.
1121 if (sizeof (b->opaque) != sizeof (vnet_buffer_opaque_t))
1123 #define _(a) if (sizeof(o->a) > sizeof (o->unused)) \
1125 ("FATAL: size of opaque union subtype %s is %d (max %d)", \
1126 #a, sizeof(o->a), sizeof (o->unused));
1127 foreach_buffer_opaque_union_subtype;
1130 return clib_error_return
1131 (0, "FATAL: size of vlib buffer opaque %d, size of vnet opaque %d",
1132 sizeof (b->opaque), sizeof (vnet_buffer_opaque_t));
1135 im->sw_if_counter_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
1136 CLIB_CACHE_LINE_BYTES);
1137 im->sw_if_counter_lock[0] = 1; /* should be no need */
1139 vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
1140 im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP].name = "drops";
1141 im->sw_if_counters[VNET_INTERFACE_COUNTER_PUNT].name = "punts";
1142 im->sw_if_counters[VNET_INTERFACE_COUNTER_IP4].name = "ip4";
1143 im->sw_if_counters[VNET_INTERFACE_COUNTER_IP6].name = "ip6";
1144 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_NO_BUF].name = "rx-no-buf";
1145 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_MISS].name = "rx-miss";
1146 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_ERROR].name = "rx-error";
1147 im->sw_if_counters[VNET_INTERFACE_COUNTER_TX_ERROR].name = "tx-error";
1149 vec_validate (im->combined_sw_if_counters,
1150 VNET_N_COMBINED_INTERFACE_COUNTER - 1);
1151 im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_RX].name = "rx";
1152 im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX].name = "tx";
1154 im->sw_if_counter_lock[0] = 0;
1156 im->device_class_by_name = hash_create_string ( /* size */ 0,
1159 vnet_device_class_t *c;
1161 c = vnm->device_class_registrations;
1165 c->index = vec_len (im->device_classes);
1166 hash_set_mem (im->device_class_by_name, c->name, c->index);
1167 vec_add1 (im->device_classes, c[0]);
1168 c = c->next_class_registration;
1172 im->hw_interface_class_by_name = hash_create_string ( /* size */ 0,
1175 im->sw_if_index_by_sup_and_sub = hash_create_mem (0, sizeof (u64),
1178 vnet_hw_interface_class_t *c;
1180 c = vnm->hw_interface_class_registrations;
1184 c->index = vec_len (im->hw_interface_classes);
1185 hash_set_mem (im->hw_interface_class_by_name, c->name, c->index);
1187 if (NULL == c->build_rewrite)
1188 c->build_rewrite = default_build_rewrite;
1189 if (NULL == c->update_adjacency)
1190 c->update_adjacency = default_update_adjacency;
1192 vec_add1 (im->hw_interface_classes, c[0]);
1193 c = c->next_class_registration;
1198 clib_error_t *error;
1200 if ((error = vlib_call_init_function (vm, vnet_interface_cli_init)))
1205 vnm->interface_tag_by_sw_if_index = hash_create (0, sizeof (uword));
1208 VLIB_INIT_FUNCTION (vnet_interface_init);
1210 /* Kludge to renumber interface names [only!] */
1212 vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance)
1215 vnet_main_t *vnm = vnet_get_main ();
1216 vnet_interface_main_t *im = &vnm->interface_main;
1217 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1219 vnet_device_class_t *dev_class = vnet_get_device_class
1220 (vnm, hi->dev_class_index);
1222 if (dev_class->name_renumber == 0 || dev_class->format_device_name == 0)
1223 return VNET_API_ERROR_UNIMPLEMENTED;
1225 rv = dev_class->name_renumber (hi, new_show_dev_instance);
1230 hash_unset_mem (im->hw_interface_by_name, hi->name);
1231 vec_free (hi->name);
1232 /* Use the mapping we set up to call it Ishmael */
1233 hi->name = format (0, "%U", dev_class->format_device_name,
1236 hash_set_mem (im->hw_interface_by_name, hi->name, hi->hw_if_index);
1241 vnet_rename_interface (vnet_main_t * vnm, u32 hw_if_index, char *new_name)
1243 vnet_interface_main_t *im = &vnm->interface_main;
1244 vlib_main_t *vm = vnm->vlib_main;
1245 vnet_hw_interface_t *hw;
1247 clib_error_t *error = 0;
1249 hw = vnet_get_hw_interface (vnm, hw_if_index);
1252 return clib_error_return (0,
1253 "unable to find hw interface for index %u",
1257 old_name = hw->name;
1259 /* set new hw->name */
1260 hw->name = format (0, "%s", new_name);
1262 /* remove the old name to hw_if_index mapping and install the new one */
1263 hash_unset_mem (im->hw_interface_by_name, old_name);
1264 hash_set_mem (im->hw_interface_by_name, hw->name, hw_if_index);
1266 /* rename tx/output nodes */
1267 vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
1268 vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);
1270 /* free the old name vector */
1271 vec_free (old_name);
1276 static clib_error_t *
1277 vnet_hw_interface_change_mac_address_helper (vnet_main_t * vnm,
1278 u32 hw_if_index, u64 mac_address)
1280 clib_error_t *error = 0;
1281 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1285 vnet_device_class_t *dev_class =
1286 vnet_get_device_class (vnm, hi->dev_class_index);
1287 if (dev_class->mac_addr_change_function)
1290 dev_class->mac_addr_change_function (vnet_get_hw_interface
1292 (char *) &mac_address);
1296 ethernet_main_t *em = ðernet_main;
1297 ethernet_interface_t *ei =
1298 pool_elt_at_index (em->interfaces, hi->hw_instance);
1300 vec_validate (hi->hw_address,
1301 STRUCT_SIZE_OF (ethernet_header_t, src_address) - 1);
1302 clib_memcpy (hi->hw_address, &mac_address,
1303 vec_len (hi->hw_address));
1305 clib_memcpy (ei->address, (u8 *) & mac_address,
1306 sizeof (ei->address));
1307 ethernet_arp_change_mac (vnm, hw_if_index);
1308 ethernet_ndp_change_mac (vnm->vlib_main, hw_if_index);
1313 clib_error_return (0,
1314 "MAC Address Change is not supported on this interface");
1320 clib_error_return (0,
1321 "mac address change is not supported for interface index %u",
1328 vnet_hw_interface_change_mac_address (vnet_main_t * vnm, u32 hw_if_index,
1331 return vnet_hw_interface_change_mac_address_helper
1332 (vnm, hw_if_index, mac_address);
1335 vnet_l3_packet_type_t
1336 vnet_link_to_l3_proto (vnet_link_t link)
1341 return (VNET_L3_PACKET_TYPE_IP4);
1343 return (VNET_L3_PACKET_TYPE_IP6);
1344 case VNET_LINK_MPLS:
1345 return (VNET_L3_PACKET_TYPE_MPLS_UNICAST);
1347 return (VNET_L3_PACKET_TYPE_ARP);
1348 case VNET_LINK_ETHERNET:
1357 default_build_rewrite (vnet_main_t * vnm,
1359 vnet_link_t link_type, const void *dst_address)
1365 default_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
1369 rewrite = vnet_build_rewrite_for_sw_interface (vnm, sw_if_index,
1370 adj_get_link_type (ai),
1373 adj_nbr_update_rewrite (ai, ADJ_NBR_REWRITE_FLAG_COMPLETE, rewrite);
1378 * fd.io coding-style-patch-verification: ON
1381 * eval: (c-set-style "gnu")