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 if ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) &&
486 (si->flags & VNET_SW_INTERFACE_FLAG_ERROR))
488 error = clib_error_return (0, "Interface in the error state");
492 /* save the si admin up flag */
493 old_flags = si->flags;
495 /* update si admin up flag in advance if we are going admin down */
496 if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
497 si->flags &= ~VNET_SW_INTERFACE_FLAG_ADMIN_UP;
499 if (dev_class->admin_up_down_function
500 && (error = dev_class->admin_up_down_function (vnm,
504 /* restore si admin up flag to it's original state on errors */
505 si->flags = old_flags;
509 if (hw_class->admin_up_down_function
510 && (error = hw_class->admin_up_down_function (vnm,
514 /* restore si admin up flag to it's original state on errors */
515 si->flags = old_flags;
519 /* Admin down implies link down. */
520 if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
521 && (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
522 vnet_hw_interface_set_flags_helper (vnm, si->hw_if_index,
524 ~VNET_HW_INTERFACE_FLAG_LINK_UP,
537 vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
539 return vnet_hw_interface_set_flags_helper
540 (vnm, hw_if_index, flags,
541 VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
545 vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
547 return vnet_sw_interface_set_flags_helper
548 (vnm, sw_if_index, flags,
549 VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
553 vnet_create_sw_interface_no_callbacks (vnet_main_t * vnm,
554 vnet_sw_interface_t * template)
556 vnet_interface_main_t *im = &vnm->interface_main;
557 vnet_sw_interface_t *sw;
560 pool_get (im->sw_interfaces, sw);
561 sw_if_index = sw - im->sw_interfaces;
566 sw->sw_if_index = sw_if_index;
567 if (sw->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
568 sw->sup_sw_if_index = sw->sw_if_index;
570 /* Allocate counters for this interface. */
574 vnet_interface_counter_lock (im);
576 for (i = 0; i < vec_len (im->sw_if_counters); i++)
578 vlib_validate_simple_counter (&im->sw_if_counters[i], sw_if_index);
579 vlib_zero_simple_counter (&im->sw_if_counters[i], sw_if_index);
582 for (i = 0; i < vec_len (im->combined_sw_if_counters); i++)
584 vlib_validate_combined_counter (&im->combined_sw_if_counters[i],
586 vlib_zero_combined_counter (&im->combined_sw_if_counters[i],
590 vnet_interface_counter_unlock (im);
597 vnet_create_sw_interface (vnet_main_t * vnm, vnet_sw_interface_t * template,
601 vnet_hw_interface_t *hi;
602 vnet_device_class_t *dev_class;
604 hi = vnet_get_sup_hw_interface (vnm, template->sup_sw_if_index);
605 dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
607 if (template->type == VNET_SW_INTERFACE_TYPE_SUB &&
608 dev_class->subif_add_del_function)
610 error = dev_class->subif_add_del_function (vnm, hi->hw_if_index,
611 (struct vnet_sw_interface_t
617 *sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, template);
618 error = vnet_sw_interface_set_flags_helper
619 (vnm, *sw_if_index, template->flags,
620 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
624 /* undo the work done by vnet_create_sw_interface_no_callbacks() */
625 vnet_interface_main_t *im = &vnm->interface_main;
626 vnet_sw_interface_t *sw =
627 pool_elt_at_index (im->sw_interfaces, *sw_if_index);
628 pool_put (im->sw_interfaces, sw);
635 vnet_delete_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
637 vnet_interface_main_t *im = &vnm->interface_main;
638 vnet_sw_interface_t *sw =
639 pool_elt_at_index (im->sw_interfaces, sw_if_index);
641 /* Check if the interface has config and is removed from L2 BD or XConnect */
642 vlib_main_t *vm = vlib_get_main ();
643 l2_input_config_t *config;
644 if (sw_if_index < vec_len (l2input_main.configs))
646 config = vec_elt_at_index (l2input_main.configs, sw_if_index);
647 if (config->xconnect)
648 set_int_l2_mode (vm, vnm, MODE_L3, config->output_sw_if_index, 0, 0,
650 if (config->xconnect || config->bridge)
651 set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0);
654 /* Bring down interface in case it is up. */
656 vnet_sw_interface_set_flags (vnm, sw_if_index, /* flags */ 0);
658 call_sw_interface_add_del_callbacks (vnm, sw_if_index, /* is_create */ 0);
660 pool_put (im->sw_interfaces, sw);
664 setup_tx_node (vlib_main_t * vm,
665 u32 node_index, vnet_device_class_t * dev_class)
667 vlib_node_t *n = vlib_get_node (vm, node_index);
669 n->function = dev_class->tx_function;
670 n->format_trace = dev_class->format_tx_trace;
672 vlib_register_errors (vm, node_index,
673 dev_class->tx_function_n_errors,
674 dev_class->tx_function_error_strings);
678 setup_output_node (vlib_main_t * vm,
679 u32 node_index, vnet_hw_interface_class_t * hw_class)
681 vlib_node_t *n = vlib_get_node (vm, node_index);
682 n->format_buffer = hw_class->format_header;
683 n->unformat_buffer = hw_class->unformat_header;
686 /* Register an interface instance. */
688 vnet_register_interface (vnet_main_t * vnm,
691 u32 hw_class_index, u32 hw_instance)
693 vnet_interface_main_t *im = &vnm->interface_main;
694 vnet_hw_interface_t *hw;
695 vnet_device_class_t *dev_class =
696 vnet_get_device_class (vnm, dev_class_index);
697 vnet_hw_interface_class_t *hw_class =
698 vnet_get_hw_interface_class (vnm, hw_class_index);
699 vlib_main_t *vm = vnm->vlib_main;
700 vnet_feature_config_main_t *fcm;
701 vnet_config_main_t *cm;
703 char *tx_node_name, *output_node_name;
705 pool_get (im->hw_interfaces, hw);
707 hw_index = hw - im->hw_interfaces;
708 hw->hw_if_index = hw_index;
709 hw->default_rx_mode = VNET_HW_INTERFACE_RX_MODE_POLLING;
711 if (dev_class->format_device_name)
712 hw->name = format (0, "%U", dev_class->format_device_name, dev_instance);
713 else if (hw_class->format_interface_name)
714 hw->name = format (0, "%U", hw_class->format_interface_name,
717 hw->name = format (0, "%s%x", hw_class->name, dev_instance);
719 if (!im->hw_interface_by_name)
720 im->hw_interface_by_name = hash_create_vec ( /* size */ 0,
721 sizeof (hw->name[0]),
724 hash_set_mem (im->hw_interface_by_name, hw->name, hw_index);
726 /* Make hardware interface point to software interface. */
728 vnet_sw_interface_t sw = {
729 .type = VNET_SW_INTERFACE_TYPE_HARDWARE,
730 .flood_class = VNET_FLOOD_CLASS_NORMAL,
731 .hw_if_index = hw_index
733 hw->sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, &sw);
736 hw->dev_class_index = dev_class_index;
737 hw->dev_instance = dev_instance;
738 hw->hw_class_index = hw_class_index;
739 hw->hw_instance = hw_instance;
741 hw->max_rate_bits_per_sec = 0;
742 hw->min_packet_bytes = 0;
743 hw->per_packet_overhead_bytes = 0;
744 hw->max_l3_packet_bytes[VLIB_RX] = ~0;
745 hw->max_l3_packet_bytes[VLIB_TX] = ~0;
747 tx_node_name = (char *) format (0, "%v-tx", hw->name);
748 output_node_name = (char *) format (0, "%v-output", hw->name);
750 /* If we have previously deleted interface nodes, re-use them. */
751 if (vec_len (im->deleted_hw_interface_nodes) > 0)
753 vnet_hw_interface_nodes_t *hn;
755 vlib_node_runtime_t *nrt;
757 hn = vec_end (im->deleted_hw_interface_nodes) - 1;
759 hw->tx_node_index = hn->tx_node_index;
760 hw->output_node_index = hn->output_node_index;
762 vlib_node_rename (vm, hw->tx_node_index, "%v", tx_node_name);
763 vlib_node_rename (vm, hw->output_node_index, "%v", output_node_name);
767 vnet_interface_output_runtime_t *rt;
769 rt = vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
770 ASSERT (rt->is_deleted == 1);
772 rt->hw_if_index = hw_index;
773 rt->sw_if_index = hw->sw_if_index;
774 rt->dev_instance = hw->dev_instance;
776 rt = vlib_node_get_runtime_data (this_vlib_main, hw->tx_node_index);
777 rt->hw_if_index = hw_index;
778 rt->sw_if_index = hw->sw_if_index;
779 rt->dev_instance = hw->dev_instance;
783 /* The new class may differ from the old one.
784 * Functions have to be updated. */
785 node = vlib_get_node (vm, hw->output_node_index);
786 node->function = dev_class->flatten_output_chains ?
787 vnet_interface_output_node_flatten_multiarch_select () :
788 vnet_interface_output_node_multiarch_select ();
789 node->format_trace = format_vnet_interface_output_trace;
790 nrt = vlib_node_get_runtime (vm, hw->output_node_index);
791 nrt->function = node->function;
793 node = vlib_get_node (vm, hw->tx_node_index);
794 node->function = dev_class->tx_function;
795 node->format_trace = dev_class->format_tx_trace;
796 nrt = vlib_node_get_runtime (vm, hw->tx_node_index);
797 nrt->function = node->function;
799 _vec_len (im->deleted_hw_interface_nodes) -= 1;
803 vlib_node_registration_t r;
804 vnet_interface_output_runtime_t rt = {
805 .hw_if_index = hw_index,
806 .sw_if_index = hw->sw_if_index,
807 .dev_instance = hw->dev_instance,
811 memset (&r, 0, sizeof (r));
812 r.type = VLIB_NODE_TYPE_INTERNAL;
813 r.runtime_data = &rt;
814 r.runtime_data_bytes = sizeof (rt);
816 r.vector_size = sizeof (u32);
818 r.flags = VLIB_NODE_FLAG_IS_OUTPUT;
819 r.name = tx_node_name;
820 r.function = dev_class->tx_function;
822 hw->tx_node_index = vlib_register_node (vm, &r);
824 vlib_node_add_named_next_with_slot (vm, hw->tx_node_index,
826 VNET_INTERFACE_TX_NEXT_DROP);
829 r.name = output_node_name;
830 r.function = dev_class->flatten_output_chains ?
831 vnet_interface_output_node_flatten_multiarch_select () :
832 vnet_interface_output_node_multiarch_select ();
833 r.format_trace = format_vnet_interface_output_trace;
838 "interface is deleted",
841 r.n_errors = ARRAY_LEN (e);
844 hw->output_node_index = vlib_register_node (vm, &r);
846 vlib_node_add_named_next_with_slot (vm, hw->output_node_index,
848 VNET_INTERFACE_OUTPUT_NEXT_DROP);
849 vlib_node_add_next_with_slot (vm, hw->output_node_index,
851 VNET_INTERFACE_OUTPUT_NEXT_TX);
853 /* add interface to the list of "output-interface" feature arc start nodes
854 and clone nexts from 1st interface if it exists */
855 fcm = vnet_feature_get_config_main (im->output_feature_arc_index);
856 cm = &fcm->config_main;
857 i = vec_len (cm->start_node_indices);
858 vec_validate (cm->start_node_indices, i);
859 cm->start_node_indices[i] = hw->output_node_index;
862 /* copy nexts from 1st interface */
863 vnet_hw_interface_t *first_hw;
864 vlib_node_t *first_node;
866 first_hw = vnet_get_hw_interface (vnm, /* hw_if_index */ 0);
867 first_node = vlib_get_node (vm, first_hw->output_node_index);
869 /* 1st 2 nexts are already added above */
870 for (i = 2; i < vec_len (first_node->next_nodes); i++)
871 vlib_node_add_next_with_slot (vm, hw->output_node_index,
872 first_node->next_nodes[i], i);
876 setup_output_node (vm, hw->output_node_index, hw_class);
877 setup_tx_node (vm, hw->tx_node_index, dev_class);
879 /* Call all up/down callbacks with zero flags when interface is created. */
880 vnet_sw_interface_set_flags_helper (vnm, hw->sw_if_index, /* flags */ 0,
881 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
882 vnet_hw_interface_set_flags_helper (vnm, hw_index, /* flags */ 0,
883 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
889 vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
891 vnet_interface_main_t *im = &vnm->interface_main;
892 vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
893 vlib_main_t *vm = vnm->vlib_main;
895 /* If it is up, mark it down. */
897 vnet_hw_interface_set_flags (vnm, hw_if_index, /* flags */ 0);
899 /* Call delete callbacks. */
900 call_hw_interface_add_del_callbacks (vnm, hw_if_index, /* is_create */ 0);
902 /* Delete software interface corresponding to hardware interface. */
903 vnet_delete_sw_interface (vnm, hw->sw_if_index);
905 /* Delete any sub-interfaces. */
909 hash_foreach (id, sw_if_index, hw->sub_interface_sw_if_index_by_id, ({
910 vnet_delete_sw_interface (vnm, sw_if_index);
916 vnet_hw_interface_nodes_t *dn;
920 vnet_interface_output_runtime_t *rt =
921 vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
923 /* Mark node runtime as deleted so output node (if called)
924 * will drop packets. */
929 vlib_node_rename (vm, hw->output_node_index,
930 "interface-%d-output-deleted", hw_if_index);
931 vlib_node_rename (vm, hw->tx_node_index, "interface-%d-tx-deleted",
933 vec_add2 (im->deleted_hw_interface_nodes, dn, 1);
934 dn->tx_node_index = hw->tx_node_index;
935 dn->output_node_index = hw->output_node_index;
938 hash_unset_mem (im->hw_interface_by_name, hw->name);
940 vec_free (hw->input_node_thread_index_by_queue);
941 vec_free (hw->dq_runtime_index_by_queue);
943 pool_put (im->hw_interfaces, hw);
947 vnet_hw_interface_walk_sw (vnet_main_t * vnm,
949 vnet_hw_sw_interface_walk_t fn, void *ctx)
951 vnet_hw_interface_t *hi;
954 hi = vnet_get_hw_interface (vnm, hw_if_index);
955 /* the super first, then the and sub interfaces */
956 fn (vnm, hi->sw_if_index, ctx);
959 hash_foreach (id, sw_if_index,
960 hi->sub_interface_sw_if_index_by_id,
962 fn (vnm, sw_if_index, ctx);
968 serialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va)
970 u32 hw_if_index = va_arg (*va, u32);
971 char *hw_class_name = va_arg (*va, char *);
972 serialize_integer (m, hw_if_index, sizeof (hw_if_index));
973 serialize_cstring (m, hw_class_name);
977 unserialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va)
979 CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
980 vnet_main_t *vnm = vnet_get_main ();
986 unserialize_integer (m, &hw_if_index, sizeof (hw_if_index));
987 unserialize_cstring (m, &hw_class_name);
989 hash_get (vnm->interface_main.hw_interface_class_by_name, hw_class_name);
991 error = vnet_hw_interface_set_class_helper (vnm, hw_if_index, p[0],
992 /* redistribute */ 0);
994 clib_error_report (error);
997 MC_SERIALIZE_MSG (vnet_hw_interface_set_class_msg, static) =
999 .name = "vnet_hw_interface_set_class",.serialize =
1000 serialize_vnet_hw_interface_set_class,.unserialize =
1001 unserialize_vnet_hw_interface_set_class,};
1004 vnet_hw_interface_init_for_class (vnet_main_t * vnm, u32 hw_if_index,
1005 u32 hw_class_index, u32 hw_instance)
1007 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1008 vnet_hw_interface_class_t *hc =
1009 vnet_get_hw_interface_class (vnm, hw_class_index);
1011 hi->hw_class_index = hw_class_index;
1012 hi->hw_instance = hw_instance;
1013 setup_output_node (vnm->vlib_main, hi->output_node_index, hc);
1016 static clib_error_t *
1017 vnet_hw_interface_set_class_helper (vnet_main_t * vnm, u32 hw_if_index,
1018 u32 hw_class_index, u32 redistribute)
1020 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1021 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, hi->sw_if_index);
1022 vnet_hw_interface_class_t *old_class =
1023 vnet_get_hw_interface_class (vnm, hi->hw_class_index);
1024 vnet_hw_interface_class_t *new_class =
1025 vnet_get_hw_interface_class (vnm, hw_class_index);
1026 vnet_device_class_t *dev_class =
1027 vnet_get_device_class (vnm, hi->dev_class_index);
1028 clib_error_t *error = 0;
1030 /* New class equals old class? Nothing to do. */
1031 if (hi->hw_class_index == hw_class_index)
1034 /* No need (and incorrect since admin up flag may be set) to do error checking when
1035 receiving unserialize message. */
1038 if (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
1039 return clib_error_return (0,
1040 "%v must be admin down to change class from %s to %s",
1041 hi->name, old_class->name, new_class->name);
1043 /* Make sure interface supports given class. */
1044 if ((new_class->is_valid_class_for_interface
1045 && !new_class->is_valid_class_for_interface (vnm, hw_if_index,
1047 || (dev_class->is_valid_class_for_interface
1048 && !dev_class->is_valid_class_for_interface (vnm, hw_if_index,
1050 return clib_error_return (0,
1051 "%v class cannot be changed from %s to %s",
1052 hi->name, old_class->name, new_class->name);
1054 if (vnm->vlib_main->mc_main)
1056 mc_serialize (vnm->vlib_main->mc_main,
1057 &vnet_hw_interface_set_class_msg, hw_if_index,
1063 if (old_class->hw_class_change)
1064 old_class->hw_class_change (vnm, hw_if_index, old_class->index,
1067 vnet_hw_interface_init_for_class (vnm, hw_if_index, new_class->index,
1070 if (new_class->hw_class_change)
1071 new_class->hw_class_change (vnm, hw_if_index, old_class->index,
1074 if (dev_class->hw_class_change)
1075 dev_class->hw_class_change (vnm, hw_if_index, new_class->index);
1081 vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index,
1084 return vnet_hw_interface_set_class_helper (vnm, hw_if_index, hw_class_index,
1085 /* redistribute */ 1);
1089 vnet_hw_interface_rx_redirect_to_node_helper (vnet_main_t * vnm,
1094 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1095 vnet_device_class_t *dev_class = vnet_get_device_class
1096 (vnm, hi->dev_class_index);
1100 /* $$$$ fixme someday maybe */
1101 ASSERT (vnm->vlib_main->mc_main == 0);
1103 if (dev_class->rx_redirect_to_node)
1105 dev_class->rx_redirect_to_node (vnm, hw_if_index, node_index);
1109 return VNET_API_ERROR_UNIMPLEMENTED;
1113 vnet_hw_interface_rx_redirect_to_node (vnet_main_t * vnm, u32 hw_if_index,
1116 return vnet_hw_interface_rx_redirect_to_node_helper (vnm, hw_if_index,
1118 1 /* redistribute */ );
1122 vnet_sw_interface_compare (vnet_main_t * vnm,
1123 uword sw_if_index0, uword sw_if_index1)
1125 vnet_sw_interface_t *sup0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1126 vnet_sw_interface_t *sup1 = vnet_get_sup_sw_interface (vnm, sw_if_index1);
1127 vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, sup0->hw_if_index);
1128 vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, sup1->hw_if_index);
1131 return vec_cmp (h0->name, h1->name);
1132 return (word) h0->hw_instance - (word) h1->hw_instance;
1136 vnet_hw_interface_compare (vnet_main_t * vnm,
1137 uword hw_if_index0, uword hw_if_index1)
1139 vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, hw_if_index0);
1140 vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, hw_if_index1);
1143 return vec_cmp (h0->name, h1->name);
1144 return (word) h0->hw_instance - (word) h1->hw_instance;
1148 vnet_sw_interface_is_p2p (vnet_main_t * vnm, u32 sw_if_index)
1150 vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
1151 vnet_hw_interface_class_t *hc =
1152 vnet_get_hw_interface_class (vnm, hw->hw_class_index);
1154 return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_P2P);
1158 vnet_interface_init (vlib_main_t * vm)
1160 vnet_main_t *vnm = vnet_get_main ();
1161 vnet_interface_main_t *im = &vnm->interface_main;
1162 vlib_buffer_t *b = 0;
1163 vnet_buffer_opaque_t *o = 0;
1166 * Keep people from shooting themselves in the foot.
1168 if (sizeof (b->opaque) != sizeof (vnet_buffer_opaque_t))
1170 #define _(a) if (sizeof(o->a) > sizeof (o->unused)) \
1172 ("FATAL: size of opaque union subtype %s is %d (max %d)", \
1173 #a, sizeof(o->a), sizeof (o->unused));
1174 foreach_buffer_opaque_union_subtype;
1177 return clib_error_return
1178 (0, "FATAL: size of vlib buffer opaque %d, size of vnet opaque %d",
1179 sizeof (b->opaque), sizeof (vnet_buffer_opaque_t));
1182 im->sw_if_counter_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
1183 CLIB_CACHE_LINE_BYTES);
1184 im->sw_if_counter_lock[0] = 1; /* should be no need */
1186 vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
1187 im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP].name = "drops";
1188 im->sw_if_counters[VNET_INTERFACE_COUNTER_PUNT].name = "punts";
1189 im->sw_if_counters[VNET_INTERFACE_COUNTER_IP4].name = "ip4";
1190 im->sw_if_counters[VNET_INTERFACE_COUNTER_IP6].name = "ip6";
1191 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_NO_BUF].name = "rx-no-buf";
1192 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_MISS].name = "rx-miss";
1193 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_ERROR].name = "rx-error";
1194 im->sw_if_counters[VNET_INTERFACE_COUNTER_TX_ERROR].name = "tx-error";
1196 vec_validate (im->combined_sw_if_counters,
1197 VNET_N_COMBINED_INTERFACE_COUNTER - 1);
1198 im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_RX].name = "rx";
1199 im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX].name = "tx";
1201 im->sw_if_counter_lock[0] = 0;
1203 im->device_class_by_name = hash_create_string ( /* size */ 0,
1206 vnet_device_class_t *c;
1208 c = vnm->device_class_registrations;
1212 c->index = vec_len (im->device_classes);
1213 hash_set_mem (im->device_class_by_name, c->name, c->index);
1214 vec_add1 (im->device_classes, c[0]);
1215 c = c->next_class_registration;
1219 im->hw_interface_class_by_name = hash_create_string ( /* size */ 0,
1222 im->sw_if_index_by_sup_and_sub = hash_create_mem (0, sizeof (u64),
1225 vnet_hw_interface_class_t *c;
1227 c = vnm->hw_interface_class_registrations;
1231 c->index = vec_len (im->hw_interface_classes);
1232 hash_set_mem (im->hw_interface_class_by_name, c->name, c->index);
1234 if (NULL == c->build_rewrite)
1235 c->build_rewrite = default_build_rewrite;
1236 if (NULL == c->update_adjacency)
1237 c->update_adjacency = default_update_adjacency;
1239 vec_add1 (im->hw_interface_classes, c[0]);
1240 c = c->next_class_registration;
1245 clib_error_t *error;
1247 if ((error = vlib_call_init_function (vm, vnet_interface_cli_init)))
1252 vnm->interface_tag_by_sw_if_index = hash_create (0, sizeof (uword));
1255 VLIB_INIT_FUNCTION (vnet_interface_init);
1257 /* Kludge to renumber interface names [only!] */
1259 vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance)
1262 vnet_main_t *vnm = vnet_get_main ();
1263 vnet_interface_main_t *im = &vnm->interface_main;
1264 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1266 vnet_device_class_t *dev_class = vnet_get_device_class
1267 (vnm, hi->dev_class_index);
1269 if (dev_class->name_renumber == 0 || dev_class->format_device_name == 0)
1270 return VNET_API_ERROR_UNIMPLEMENTED;
1272 rv = dev_class->name_renumber (hi, new_show_dev_instance);
1277 hash_unset_mem (im->hw_interface_by_name, hi->name);
1278 vec_free (hi->name);
1279 /* Use the mapping we set up to call it Ishmael */
1280 hi->name = format (0, "%U", dev_class->format_device_name,
1283 hash_set_mem (im->hw_interface_by_name, hi->name, hi->hw_if_index);
1288 vnet_rename_interface (vnet_main_t * vnm, u32 hw_if_index, char *new_name)
1290 vnet_interface_main_t *im = &vnm->interface_main;
1291 vlib_main_t *vm = vnm->vlib_main;
1292 vnet_hw_interface_t *hw;
1294 clib_error_t *error = 0;
1296 hw = vnet_get_hw_interface (vnm, hw_if_index);
1299 return clib_error_return (0,
1300 "unable to find hw interface for index %u",
1304 old_name = hw->name;
1306 /* set new hw->name */
1307 hw->name = format (0, "%s", new_name);
1309 /* remove the old name to hw_if_index mapping and install the new one */
1310 hash_unset_mem (im->hw_interface_by_name, old_name);
1311 hash_set_mem (im->hw_interface_by_name, hw->name, hw_if_index);
1313 /* rename tx/output nodes */
1314 vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
1315 vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);
1317 /* free the old name vector */
1318 vec_free (old_name);
1323 static clib_error_t *
1324 vnet_hw_interface_change_mac_address_helper (vnet_main_t * vnm,
1325 u32 hw_if_index, u64 mac_address)
1327 clib_error_t *error = 0;
1328 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1332 vnet_device_class_t *dev_class =
1333 vnet_get_device_class (vnm, hi->dev_class_index);
1334 if (dev_class->mac_addr_change_function)
1337 dev_class->mac_addr_change_function (hi, (char *) &mac_address);
1341 vnet_hw_interface_class_t *hw_class;
1343 hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
1345 if (NULL != hw_class->mac_addr_change_function)
1346 hw_class->mac_addr_change_function (hi, (char *) &mac_address);
1351 clib_error_return (0,
1352 "MAC Address Change is not supported on this interface");
1358 clib_error_return (0,
1359 "mac address change is not supported for interface index %u",
1366 vnet_hw_interface_change_mac_address (vnet_main_t * vnm, u32 hw_if_index,
1369 return vnet_hw_interface_change_mac_address_helper
1370 (vnm, hw_if_index, mac_address);
1373 vnet_l3_packet_type_t
1374 vnet_link_to_l3_proto (vnet_link_t link)
1379 return (VNET_L3_PACKET_TYPE_IP4);
1381 return (VNET_L3_PACKET_TYPE_IP6);
1382 case VNET_LINK_MPLS:
1383 return (VNET_L3_PACKET_TYPE_MPLS);
1385 return (VNET_L3_PACKET_TYPE_ARP);
1386 case VNET_LINK_ETHERNET:
1396 default_build_rewrite (vnet_main_t * vnm,
1398 vnet_link_t link_type, const void *dst_address)
1404 default_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
1408 rewrite = vnet_build_rewrite_for_sw_interface (vnm, sw_if_index,
1409 adj_get_link_type (ai),
1412 adj_nbr_update_rewrite (ai, ADJ_NBR_REWRITE_FLAG_COMPLETE, rewrite);
1417 * fd.io coding-style-patch-verification: ON
1420 * eval: (c-set-style "gnu")