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>
43 #define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0)
44 #define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1)
47 vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, u32 hw_if_index, u32 flags,
51 vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, u32 sw_if_index, u32 flags,
55 vnet_hw_interface_set_class_helper (vnet_main_t * vnm, u32 hw_if_index, u32 hw_class_index, u32 redistribute);
58 /* Either sw or hw interface index. */
63 } vnet_sw_hw_interface_state_t;
65 static void serialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m, va_list * va)
67 vnet_sw_hw_interface_state_t * s = va_arg (*va, vnet_sw_hw_interface_state_t *);
68 u32 n = va_arg (*va, u32);
70 for (i = 0; i < n; i++) {
71 serialize_integer (m, s[i].sw_hw_if_index, sizeof (s[i].sw_hw_if_index));
72 serialize_integer (m, s[i].flags, sizeof (s[i].flags));
76 static void unserialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m, va_list * va)
78 vnet_sw_hw_interface_state_t * s = va_arg (*va, vnet_sw_hw_interface_state_t *);
79 u32 n = va_arg (*va, u32);
81 for (i = 0; i < n; i++) {
82 unserialize_integer (m, &s[i].sw_hw_if_index, sizeof (s[i].sw_hw_if_index));
83 unserialize_integer (m, &s[i].flags, sizeof (s[i].flags));
87 static void serialize_vnet_sw_hw_interface_set_flags (serialize_main_t * m, va_list * va)
89 vnet_sw_hw_interface_state_t * s = va_arg (*va, vnet_sw_hw_interface_state_t *);
90 serialize (m, serialize_vec_vnet_sw_hw_interface_state, s, 1);
93 static void unserialize_vnet_sw_interface_set_flags (serialize_main_t * m, va_list * va)
95 CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
96 vnet_sw_hw_interface_state_t s;
98 unserialize (m, unserialize_vec_vnet_sw_hw_interface_state, &s, 1);
100 vnet_sw_interface_set_flags_helper
101 (vnet_get_main(), s.sw_hw_if_index, s.flags,
102 /* helper_flags no redistribution */ 0);
105 static void unserialize_vnet_hw_interface_set_flags (serialize_main_t * m, va_list * va)
107 CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
108 vnet_sw_hw_interface_state_t s;
110 unserialize (m, unserialize_vec_vnet_sw_hw_interface_state, &s, 1);
112 vnet_hw_interface_set_flags_helper
113 (vnet_get_main(), s.sw_hw_if_index, s.flags,
114 /* helper_flags no redistribution */ 0);
117 MC_SERIALIZE_MSG (vnet_sw_interface_set_flags_msg, static) = {
118 .name = "vnet_sw_interface_set_flags",
119 .serialize = serialize_vnet_sw_hw_interface_set_flags,
120 .unserialize = unserialize_vnet_sw_interface_set_flags,
123 MC_SERIALIZE_MSG (vnet_hw_interface_set_flags_msg, static) = {
124 .name = "vnet_hw_interface_set_flags",
125 .serialize = serialize_vnet_sw_hw_interface_set_flags,
126 .unserialize = unserialize_vnet_hw_interface_set_flags,
129 void serialize_vnet_interface_state (serialize_main_t * m, va_list * va)
131 vnet_main_t * vnm = va_arg (*va, vnet_main_t *);
132 vnet_sw_hw_interface_state_t * sts = 0, * st;
133 vnet_sw_interface_t * sif;
134 vnet_hw_interface_t * hif;
135 vnet_interface_main_t * im = &vnm->interface_main;
137 /* Serialize hardware interface classes since they may have changed.
138 Must do this before sending up/down flags. */
139 pool_foreach (hif, im->hw_interfaces, ({
140 vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hif->hw_class_index);
141 serialize_cstring (m, hw_class->name);
144 /* Send sw/hw interface state when non-zero. */
145 pool_foreach (sif, im->sw_interfaces, ({
148 vec_add2 (sts, st, 1);
149 st->sw_hw_if_index = sif->sw_if_index;
150 st->flags = sif->flags;
154 vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);
159 pool_foreach (hif, im->hw_interfaces, ({
162 vec_add2 (sts, st, 1);
163 st->sw_hw_if_index = hif->hw_if_index;
164 st->flags = hif->flags;
168 vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);
173 void unserialize_vnet_interface_state (serialize_main_t * m, va_list * va)
175 vnet_main_t * vnm = va_arg (*va, vnet_main_t *);
176 vnet_sw_hw_interface_state_t * sts = 0, * st;
178 /* First set interface hardware class. */
180 vnet_interface_main_t * im = &vnm->interface_main;
181 vnet_hw_interface_t * hif;
184 clib_error_t * error;
186 pool_foreach (hif, im->hw_interfaces, ({
187 unserialize_cstring (m, &class_name);
188 p = hash_get_mem (im->hw_interface_class_by_name, class_name);
190 error = vnet_hw_interface_set_class_helper (vnm, hif->hw_if_index, p[0], /* redistribute */ 0);
192 clib_error_report (error);
193 vec_free (class_name);
197 vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
198 vec_foreach (st, sts)
199 vnet_sw_interface_set_flags_helper (vnm, st->sw_hw_if_index, st->flags,
200 /* no distribute */ 0);
203 vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
204 vec_foreach (st, sts)
205 vnet_hw_interface_set_flags_helper (vnm, st->sw_hw_if_index, st->flags,
206 /* no distribute */ 0);
210 static clib_error_t *
211 call_elf_section_interface_callbacks (vnet_main_t * vnm, u32 if_index,
213 _vnet_interface_function_list_elt_t *elt)
215 clib_error_t * error = 0;
219 error = elt->fp(vnm, if_index, flags);
222 elt = elt->next_interface_function;
227 static clib_error_t *
228 call_hw_interface_add_del_callbacks (vnet_main_t * vnm, u32 hw_if_index, u32 is_create)
230 vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, hw_if_index);
231 vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
232 vnet_device_class_t * dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
233 clib_error_t * error = 0;
235 if (hw_class->interface_add_del_function
236 && (error = hw_class->interface_add_del_function (vnm, hw_if_index, is_create)))
239 if (dev_class->interface_add_del_function
240 && (error = dev_class->interface_add_del_function (vnm, hw_if_index, is_create)))
243 error = call_elf_section_interface_callbacks
244 (vnm, hw_if_index, is_create, vnm->hw_interface_add_del_functions);
249 static clib_error_t *
250 call_sw_interface_add_del_callbacks (vnet_main_t * vnm, u32 sw_if_index, u32 is_create)
252 return call_elf_section_interface_callbacks
253 (vnm, sw_if_index, is_create, vnm->sw_interface_add_del_functions);
256 #define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0)
257 #define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1)
259 static clib_error_t *
260 vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, u32 hw_if_index, u32 flags,
263 vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, hw_if_index);
264 vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
265 vnet_device_class_t * dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
266 vlib_main_t * vm = vnm->vlib_main;
268 clib_error_t * error = 0;
269 u32 is_create = (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
271 mask = (VNET_HW_INTERFACE_FLAG_LINK_UP | VNET_HW_INTERFACE_FLAG_DUPLEX_MASK |
272 VNET_HW_INTERFACE_FLAG_SPEED_MASK);
275 /* Call hardware interface add/del callbacks. */
277 call_hw_interface_add_del_callbacks (vnm, hw_if_index, is_create);
279 /* Already in the desired state? */
280 if (! is_create && (hi->flags & mask) == flags)
283 /* Some interface classes do not redistribute (e.g. are local). */
284 if (! dev_class->redistribute)
285 helper_flags &= ~ VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE;
288 && (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE))
290 vnet_sw_hw_interface_state_t s;
291 s.sw_hw_if_index = hw_if_index;
293 mc_serialize (vm->mc_main, &vnet_hw_interface_set_flags_msg, &s);
296 if ((hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) !=
297 (flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
299 /* Do hardware class (e.g. ethernet). */
300 if (hw_class->link_up_down_function
301 && (error = hw_class->link_up_down_function (vnm, hw_if_index,
305 error = call_elf_section_interface_callbacks
306 (vnm, hw_if_index, is_create, vnm->hw_interface_link_up_down_functions);
319 static clib_error_t *
320 vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, u32 sw_if_index, u32 flags,
323 vnet_sw_interface_t * si = vnet_get_sw_interface (vnm, sw_if_index);
324 vlib_main_t * vm = vnm->vlib_main;
326 clib_error_t * error = 0;
327 u32 is_create = (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
330 mask = VNET_SW_INTERFACE_FLAG_ADMIN_UP | VNET_SW_INTERFACE_FLAG_PUNT;
335 error = call_sw_interface_add_del_callbacks (vnm, sw_if_index, is_create);
339 if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
341 /* Notify everyone when the interface is created as admin up */
342 error = call_elf_section_interface_callbacks (vnm, sw_if_index,
343 flags, vnm->sw_interface_admin_up_down_functions);
350 vnet_sw_interface_t * si_sup = si;
352 /* Check that super interface is in correct state. */
353 if (si->type == VNET_SW_INTERFACE_TYPE_SUB)
355 si_sup = vnet_get_sw_interface (vnm, si->sup_sw_if_index);
357 /* Check to see if we're bringing down the soft interface and if it's parent is up */
358 if ((flags != (si_sup->flags & mask)) &&
359 (!((flags == 0) && ((si_sup->flags & mask) == VNET_SW_INTERFACE_FLAG_ADMIN_UP))))
361 error = clib_error_return (0, "super-interface %U must be %U",
362 format_vnet_sw_interface_name, vnm, si_sup,
363 format_vnet_sw_interface_flags, flags);
368 /* Donot change state for slave link of bonded interfaces */
369 if (si->flags & VNET_SW_INTERFACE_FLAG_BOND_SLAVE)
371 error = clib_error_return
372 (0, "not allowed as %U belong to a BondEthernet interface",
373 format_vnet_sw_interface_name, vnm, si);
377 /* Already in the desired state? */
378 if ((si->flags & mask) == flags)
381 /* Sub-interfaces of hardware interfaces that do no redistribute,
382 do not redistribute themselves. */
383 if (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
385 vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, si_sup->hw_if_index);
386 vnet_device_class_t * dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
387 if (! dev_class->redistribute)
388 helper_flags &= ~ VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE;
392 && (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE))
394 vnet_sw_hw_interface_state_t s;
395 s.sw_hw_if_index = sw_if_index;
397 mc_serialize (vm->mc_main, &vnet_sw_interface_set_flags_msg, &s);
400 error = call_elf_section_interface_callbacks
401 (vnm, sw_if_index, flags, vnm->sw_interface_admin_up_down_functions);
406 if (si->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
408 vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, si->hw_if_index);
409 vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
410 vnet_device_class_t * dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
412 /* save the si admin up flag */
413 old_flags = si->flags;
415 /* update si admin up flag in advance if we are going admin down */
416 if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
417 si->flags &= ~VNET_SW_INTERFACE_FLAG_ADMIN_UP;
419 if (dev_class->admin_up_down_function
420 && (error = dev_class->admin_up_down_function(vnm,
424 /* restore si admin up flag to it's original state on errors */
425 si->flags = old_flags;
429 if (hw_class->admin_up_down_function
430 && (error = hw_class->admin_up_down_function(vnm,
434 /* restore si admin up flag to it's original state on errors */
435 si->flags = old_flags;
439 /* Admin down implies link down. */
440 if (! (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
441 && (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
442 vnet_hw_interface_set_flags_helper (vnm, si->hw_if_index,
443 hi->flags &~ VNET_HW_INTERFACE_FLAG_LINK_UP,
456 vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
458 return vnet_hw_interface_set_flags_helper
459 (vnm, hw_if_index, flags,
460 VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
464 vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
466 return vnet_sw_interface_set_flags_helper
467 (vnm, sw_if_index, flags,
468 VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
472 vnet_create_sw_interface_no_callbacks (vnet_main_t * vnm, vnet_sw_interface_t * template)
474 vnet_interface_main_t * im = &vnm->interface_main;
475 vnet_sw_interface_t * sw;
478 pool_get (im->sw_interfaces, sw);
479 sw_if_index = sw - im->sw_interfaces;
484 sw->sw_if_index = sw_if_index;
485 if (sw->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
486 sw->sup_sw_if_index = sw->sw_if_index;
488 /* Allocate counters for this interface. */
492 vnet_interface_counter_lock(im);
494 for (i = 0; i < vec_len (im->sw_if_counters); i++)
496 vlib_validate_simple_counter (&im->sw_if_counters[i], sw_if_index);
497 vlib_zero_simple_counter (&im->sw_if_counters[i], sw_if_index);
500 for (i = 0; i < vec_len (im->combined_sw_if_counters); i++)
502 vlib_validate_combined_counter (&im->combined_sw_if_counters[i],
504 vlib_zero_combined_counter (&im->combined_sw_if_counters[i],
508 vnet_interface_counter_unlock(im);
515 vnet_create_sw_interface (vnet_main_t * vnm, vnet_sw_interface_t * template, u32 * sw_if_index)
517 clib_error_t * error;
518 vnet_hw_interface_t * hi;
519 vnet_device_class_t * dev_class;
521 hi = vnet_get_sup_hw_interface (vnm, template->sup_sw_if_index);
522 dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
524 if (template->type == VNET_SW_INTERFACE_TYPE_SUB &&
525 dev_class->subif_add_del_function) {
526 error = dev_class->subif_add_del_function (vnm, hi->hw_if_index,
527 (struct vnet_sw_interface_t *) template, 1);
532 *sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, template);
533 error = vnet_sw_interface_set_flags_helper
534 (vnm, *sw_if_index, template->flags,
535 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
538 // undo the work done by vnet_create_sw_interface_no_callbacks()
539 vnet_interface_main_t * im = &vnm->interface_main;
540 vnet_sw_interface_t * sw = pool_elt_at_index (im->sw_interfaces, *sw_if_index);
541 pool_put (im->sw_interfaces, sw);
547 void vnet_delete_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
549 vnet_interface_main_t * im = &vnm->interface_main;
550 vnet_sw_interface_t * sw = pool_elt_at_index (im->sw_interfaces, sw_if_index);
552 /* Bring down interface in case it is up. */
554 vnet_sw_interface_set_flags (vnm, sw_if_index, /* flags */ 0);
556 call_sw_interface_add_del_callbacks (vnm, sw_if_index, /* is_create */ 0);
558 pool_put (im->sw_interfaces, sw);
561 static void setup_tx_node (vlib_main_t * vm,
563 vnet_device_class_t * dev_class)
565 vlib_node_t * n = vlib_get_node (vm, node_index);
567 n->function = dev_class->tx_function;
568 n->format_trace = dev_class->format_tx_trace;
569 vlib_register_errors (vm, node_index,
570 dev_class->tx_function_n_errors,
571 dev_class->tx_function_error_strings);
574 static void setup_output_node (vlib_main_t * vm,
576 vnet_hw_interface_class_t * hw_class)
578 vlib_node_t * n = vlib_get_node (vm, node_index);
579 n->format_buffer = hw_class->format_header;
580 n->unformat_buffer = hw_class->unformat_header;
583 /* Register an interface instance. */
585 vnet_register_interface (vnet_main_t * vnm,
591 vnet_interface_main_t * im = &vnm->interface_main;
592 vnet_hw_interface_t * hw;
593 vnet_device_class_t * dev_class = vnet_get_device_class (vnm, dev_class_index);
594 vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hw_class_index);
595 vlib_main_t * vm = vnm->vlib_main;
597 char * tx_node_name, * output_node_name;
599 pool_get (im->hw_interfaces, hw);
601 hw_index = hw - im->hw_interfaces;
602 hw->hw_if_index = hw_index;
604 if (dev_class->format_device_name)
605 hw->name = format (0, "%U",
606 dev_class->format_device_name, dev_instance);
607 else if (hw_class->format_interface_name)
608 hw->name = format (0, "%U", hw_class->format_interface_name,
611 hw->name = format (0, "%s%x", hw_class->name, dev_instance);
613 if (! im->hw_interface_by_name)
614 im->hw_interface_by_name = hash_create_vec (/* size */ 0,
615 sizeof (hw->name[0]),
618 hash_set_mem (im->hw_interface_by_name, hw->name, hw_index);
620 /* Make hardware interface point to software interface. */
622 vnet_sw_interface_t sw;
624 memset (&sw, 0, sizeof (sw));
625 sw.type = VNET_SW_INTERFACE_TYPE_HARDWARE;
626 sw.hw_if_index = hw_index;
627 hw->sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, &sw);
630 hw->dev_class_index = dev_class_index;
631 hw->dev_instance = dev_instance;
632 hw->hw_class_index = hw_class_index;
633 hw->hw_instance = hw_instance;
635 hw->max_rate_bits_per_sec = 0;
636 hw->min_packet_bytes = 0;
637 hw->per_packet_overhead_bytes = 0;
638 hw->max_l3_packet_bytes[VLIB_RX] = ~0;
639 hw->max_l3_packet_bytes[VLIB_TX] = ~0;
641 tx_node_name = (char *) format (0, "%v-tx", hw->name);
642 output_node_name = (char *) format (0, "%v-output", hw->name);
644 /* If we have previously deleted interface nodes, re-use them. */
645 if (vec_len (im->deleted_hw_interface_nodes) > 0)
647 vnet_hw_interface_nodes_t * hn;
648 vnet_interface_output_runtime_t * rt;
650 hn = vec_end (im->deleted_hw_interface_nodes) - 1;
652 hw->tx_node_index = hn->tx_node_index;
653 hw->output_node_index = hn->output_node_index;
655 vlib_node_rename (vm, hw->tx_node_index, "%v", tx_node_name);
656 vlib_node_rename (vm, hw->output_node_index, "%v", output_node_name);
658 rt = vlib_node_get_runtime_data (vm, hw->output_node_index);
659 ASSERT (rt->is_deleted == 1);
661 rt->hw_if_index = hw_index;
662 rt->sw_if_index = hw->sw_if_index;
663 rt->dev_instance = hw->dev_instance;
665 rt = vlib_node_get_runtime_data (vm, hw->tx_node_index);
666 rt->hw_if_index = hw_index;
667 rt->sw_if_index = hw->sw_if_index;
668 rt->dev_instance = hw->dev_instance;
670 vlib_worker_thread_node_runtime_update();
671 _vec_len (im->deleted_hw_interface_nodes) -= 1;
675 vlib_node_registration_t r;
676 vnet_interface_output_runtime_t rt = {
677 .hw_if_index = hw_index,
678 .sw_if_index = hw->sw_if_index,
679 .dev_instance = hw->dev_instance,
683 memset (&r, 0, sizeof (r));
684 r.type = VLIB_NODE_TYPE_INTERNAL;
685 r.runtime_data = &rt;
686 r.runtime_data_bytes = sizeof (rt);
688 r.vector_size = sizeof (u32);
690 r.flags = VLIB_NODE_FLAG_IS_OUTPUT;
691 r.name = tx_node_name;
692 r.function = dev_class->tx_function;
694 hw->tx_node_index = vlib_register_node (vm, &r);
696 vlib_node_add_named_next_with_slot (vm, hw->tx_node_index,
698 VNET_INTERFACE_TX_NEXT_DROP);
701 r.name = output_node_name;
702 r.function = dev_class->no_flatten_output_chains ?
703 vnet_interface_output_node_no_flatten_multiarch_select() :
704 vnet_interface_output_node_multiarch_select() ;
705 r.format_trace = format_vnet_interface_output_trace;
708 static char * e[] = {
710 "interface is deleted",
713 r.n_errors = ARRAY_LEN (e);
717 hw->output_node_index = vlib_register_node (vm, &r);
719 #define _(sym,str) vlib_node_add_named_next_with_slot (vm, \
720 hw->output_node_index, str, \
721 VNET_INTERFACE_OUTPUT_NEXT_##sym);
722 foreach_intf_output_feat
725 vlib_node_add_named_next_with_slot (vm, hw->output_node_index,
727 VNET_INTERFACE_OUTPUT_NEXT_DROP);
728 vlib_node_add_next_with_slot (vm, hw->output_node_index,
730 VNET_INTERFACE_OUTPUT_NEXT_TX);
733 setup_output_node (vm, hw->output_node_index, hw_class);
734 setup_tx_node (vm, hw->tx_node_index, dev_class);
736 /* Call all up/down callbacks with zero flags when interface is created. */
737 vnet_sw_interface_set_flags_helper
738 (vnm, hw->sw_if_index, /* flags */ 0,
739 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
740 vnet_hw_interface_set_flags_helper
741 (vnm, hw_index, /* flags */ 0,
742 VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
747 void vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
749 vnet_interface_main_t * im = &vnm->interface_main;
750 vnet_hw_interface_t * hw = vnet_get_hw_interface (vnm, hw_if_index);
751 vlib_main_t * vm = vnm->vlib_main;
753 /* If it is up, mark it down. */
755 vnet_hw_interface_set_flags (vnm, hw_if_index, /* flags */ 0);
757 /* Call delete callbacks. */
758 call_hw_interface_add_del_callbacks (vnm, hw_if_index, /* is_create */ 0);
760 /* Delete software interface corresponding to hardware interface. */
761 vnet_delete_sw_interface (vnm, hw->sw_if_index);
763 /* Delete any sub-interfaces. */
766 hash_foreach (id, sw_if_index, hw->sub_interface_sw_if_index_by_id, ({
767 vnet_delete_sw_interface (vnm, sw_if_index);
772 vnet_hw_interface_nodes_t * dn;
773 vnet_interface_output_runtime_t * rt = vlib_node_get_runtime_data (vm, hw->output_node_index);
775 /* Mark node runtime as deleted so output node (if called) will drop packets. */
778 vlib_node_rename (vm, hw->output_node_index, "interface-%d-output-deleted", hw_if_index);
779 vlib_node_rename (vm, hw->tx_node_index, "interface-%d-tx-deleted", hw_if_index);
780 vec_add2 (im->deleted_hw_interface_nodes, dn, 1);
781 dn->tx_node_index = hw->tx_node_index;
782 dn->output_node_index = hw->output_node_index;
785 hash_unset_mem (im->hw_interface_by_name, hw->name);
788 pool_put (im->hw_interfaces, hw);
791 static void serialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va)
793 u32 hw_if_index = va_arg (*va, u32);
794 char * hw_class_name = va_arg (*va, char *);
795 serialize_integer (m, hw_if_index, sizeof (hw_if_index));
796 serialize_cstring (m, hw_class_name);
799 static void unserialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va)
801 CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
802 vnet_main_t * vnm = vnet_get_main();
804 char * hw_class_name;
806 clib_error_t * error;
808 unserialize_integer (m, &hw_if_index, sizeof (hw_if_index));
809 unserialize_cstring (m, &hw_class_name);
810 p = hash_get (vnm->interface_main.hw_interface_class_by_name, hw_class_name);
812 error = vnet_hw_interface_set_class_helper (vnm, hw_if_index, p[0], /* redistribute */ 0);
814 clib_error_report (error);
817 MC_SERIALIZE_MSG (vnet_hw_interface_set_class_msg, static) = {
818 .name = "vnet_hw_interface_set_class",
819 .serialize = serialize_vnet_hw_interface_set_class,
820 .unserialize = unserialize_vnet_hw_interface_set_class,
823 void vnet_hw_interface_init_for_class (vnet_main_t * vnm, u32 hw_if_index, u32 hw_class_index, u32 hw_instance)
825 vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, hw_if_index);
826 vnet_hw_interface_class_t * hc = vnet_get_hw_interface_class (vnm, hw_class_index);
828 hi->hw_class_index = hw_class_index;
829 hi->hw_instance = hw_instance;
830 setup_output_node (vnm->vlib_main, hi->output_node_index, hc);
833 static clib_error_t *
834 vnet_hw_interface_set_class_helper (vnet_main_t * vnm, u32 hw_if_index, u32 hw_class_index, u32 redistribute)
836 vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, hw_if_index);
837 vnet_sw_interface_t * si = vnet_get_sw_interface (vnm, hi->sw_if_index);
838 vnet_hw_interface_class_t * old_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
839 vnet_hw_interface_class_t * new_class = vnet_get_hw_interface_class (vnm, hw_class_index);
840 vnet_device_class_t * dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
841 clib_error_t * error = 0;
843 /* New class equals old class? Nothing to do. */
844 if (hi->hw_class_index == hw_class_index)
847 /* No need (and incorrect since admin up flag may be set) to do error checking when
848 receiving unserialize message. */
851 if (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
852 return clib_error_return (0, "%v must be admin down to change class from %s to %s",
853 hi->name, old_class->name, new_class->name);
855 /* Make sure interface supports given class. */
856 if ((new_class->is_valid_class_for_interface
857 && ! new_class->is_valid_class_for_interface (vnm, hw_if_index, hw_class_index))
858 || (dev_class ->is_valid_class_for_interface
859 && ! dev_class->is_valid_class_for_interface (vnm, hw_if_index, hw_class_index)))
860 return clib_error_return (0, "%v class cannot be changed from %s to %s",
861 hi->name, old_class->name, new_class->name);
863 if (vnm->vlib_main->mc_main)
865 mc_serialize (vnm->vlib_main->mc_main, &vnet_hw_interface_set_class_msg, hw_if_index, new_class->name);
870 if (old_class->hw_class_change)
871 old_class->hw_class_change (vnm, hw_if_index, old_class->index, new_class->index);
873 vnet_hw_interface_init_for_class (vnm, hw_if_index, new_class->index, /* instance */ ~0);
875 if (new_class->hw_class_change)
876 new_class->hw_class_change (vnm, hw_if_index, old_class->index, new_class->index);
878 if (dev_class->hw_class_change)
879 dev_class->hw_class_change (vnm, hw_if_index, new_class->index);
885 vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index, u32 hw_class_index)
886 { return vnet_hw_interface_set_class_helper (vnm, hw_if_index, hw_class_index, /* redistribute */ 1); }
889 vnet_hw_interface_rx_redirect_to_node_helper (vnet_main_t * vnm,
894 vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, hw_if_index);
895 vnet_device_class_t * dev_class = vnet_get_device_class
896 (vnm, hi->dev_class_index);
900 /* $$$$ fixme someday maybe */
901 ASSERT(vnm->vlib_main->mc_main == 0);
903 if (dev_class->rx_redirect_to_node)
905 dev_class->rx_redirect_to_node (vnm, hw_if_index, node_index);
909 return VNET_API_ERROR_UNIMPLEMENTED;
912 int vnet_hw_interface_rx_redirect_to_node (vnet_main_t * vnm, u32 hw_if_index,
914 { return vnet_hw_interface_rx_redirect_to_node_helper (vnm, hw_if_index,
916 1 /* redistribute */); }
919 vnet_sw_interface_compare (vnet_main_t * vnm,
920 uword sw_if_index0, uword sw_if_index1)
922 vnet_sw_interface_t * sup0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
923 vnet_sw_interface_t * sup1 = vnet_get_sup_sw_interface (vnm, sw_if_index1);
924 vnet_hw_interface_t * h0 = vnet_get_hw_interface (vnm, sup0->hw_if_index);
925 vnet_hw_interface_t * h1 = vnet_get_hw_interface (vnm, sup1->hw_if_index);
928 return vec_cmp (h0->name, h1->name);
929 return (word) h0->hw_instance - (word) h1->hw_instance;
933 vnet_hw_interface_compare (vnet_main_t * vnm,
934 uword hw_if_index0, uword hw_if_index1)
936 vnet_hw_interface_t * h0 = vnet_get_hw_interface (vnm, hw_if_index0);
937 vnet_hw_interface_t * h1 = vnet_get_hw_interface (vnm, hw_if_index1);
940 return vec_cmp (h0->name, h1->name);
941 return (word) h0->hw_instance - (word) h1->hw_instance;
945 vnet_interface_init (vlib_main_t * vm)
947 vnet_main_t * vnm = vnet_get_main();
948 vnet_interface_main_t * im = &vnm->interface_main;
949 vlib_buffer_t * b = 0;
950 vnet_buffer_opaque_t * o = 0;
953 * Keep people from shooting themselves in the foot.
955 if (sizeof(b->opaque) != sizeof (vnet_buffer_opaque_t))
957 #define _(a) if (sizeof(o->a) > sizeof (o->unused)) \
959 ("FATAL: size of opaque union subtype %s is %d (max %d)", \
960 #a, sizeof(o->a), sizeof (o->unused));
961 foreach_buffer_opaque_union_subtype;
964 return clib_error_return
965 (0, "FATAL: size of vlib buffer opaque %d, size of vnet opaque %d",
966 sizeof(b->opaque), sizeof (vnet_buffer_opaque_t));
969 im->sw_if_counter_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
970 CLIB_CACHE_LINE_BYTES);
971 im->sw_if_counter_lock[0] = 1; /* should be no need */
973 vec_validate (im->sw_if_counters,
974 VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
975 im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP].name = "drops";
976 im->sw_if_counters[VNET_INTERFACE_COUNTER_PUNT].name = "punts";
977 im->sw_if_counters[VNET_INTERFACE_COUNTER_IP4].name = "ip4";
978 im->sw_if_counters[VNET_INTERFACE_COUNTER_IP6].name = "ip6";
979 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_NO_BUF].name = "rx-no-buf";
980 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_MISS].name = "rx-miss";
981 im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_ERROR].name = "rx-error";
982 im->sw_if_counters[VNET_INTERFACE_COUNTER_TX_ERROR].name = "tx-error";
984 vec_validate (im->combined_sw_if_counters,
985 VNET_N_COMBINED_INTERFACE_COUNTER - 1);
986 im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_RX].name = "rx";
987 im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX].name = "tx";
989 im->sw_if_counter_lock[0] = 0;
991 im->device_class_by_name = hash_create_string (/* size */ 0,
994 vnet_device_class_t * c;
996 c = vnm->device_class_registrations;
1000 c->index = vec_len (im->device_classes);
1001 hash_set_mem (im->device_class_by_name, c->name, c->index);
1002 vec_add1 (im->device_classes, c[0]);
1003 c = c->next_class_registration;
1007 im->hw_interface_class_by_name = hash_create_string (/* size */ 0,
1010 im->sw_if_index_by_sup_and_sub = hash_create_mem (0, sizeof(u64),
1013 vnet_hw_interface_class_t * c;
1015 c = vnm->hw_interface_class_registrations;
1019 c->index = vec_len (im->hw_interface_classes);
1020 hash_set_mem (im->hw_interface_class_by_name, c->name, c->index);
1021 vec_add1 (im->hw_interface_classes, c[0]);
1022 c = c->next_class_registration;
1027 clib_error_t * error;
1029 if ((error = vlib_call_init_function (vm, vnet_interface_cli_init)))
1036 VLIB_INIT_FUNCTION (vnet_interface_init);
1038 /* Kludge to renumber interface names [only!] */
1039 int vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance)
1042 vnet_main_t * vnm = vnet_get_main();
1043 vnet_interface_main_t * im = &vnm->interface_main;
1044 vnet_hw_interface_t * hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1046 vnet_device_class_t * dev_class = vnet_get_device_class
1047 (vnm, hi->dev_class_index);
1049 if (dev_class->name_renumber == 0 || dev_class->format_device_name == 0)
1050 return VNET_API_ERROR_UNIMPLEMENTED;
1052 rv = dev_class->name_renumber (hi, new_show_dev_instance);
1057 hash_unset_mem (im->hw_interface_by_name, hi->name);
1058 vec_free (hi->name);
1059 /* Use the mapping we set up to call it Ishmael */
1060 hi->name = format (0, "%U", dev_class->format_device_name,
1063 hash_set_mem (im->hw_interface_by_name, hi->name, hi->hw_if_index);
1067 int vnet_interface_add_del_feature(vnet_main_t * vnm,
1070 intf_output_feat_t feature,
1073 vnet_sw_interface_t * sw;
1075 sw = vnet_get_sw_interface(vnm, sw_if_index);
1079 sw->output_feature_bitmap |= (1 << feature);
1080 sw->output_feature_bitmap |= (1<< INTF_OUTPUT_FEAT_DONE);
1082 } else { /* delete */
1084 sw->output_feature_bitmap &= ~(1<<feature);
1085 if (sw->output_feature_bitmap == (1 << INTF_OUTPUT_FEAT_DONE))
1086 sw->output_feature_bitmap = 0;
1093 vnet_rename_interface (vnet_main_t * vnm,
1097 vnet_interface_main_t * im = &vnm->interface_main;
1098 vlib_main_t * vm = vnm->vlib_main;
1099 vnet_hw_interface_t* hw;
1101 clib_error_t * error = 0;
1103 hw = vnet_get_hw_interface(vnm, hw_if_index);
1106 return clib_error_return (0,
1107 "unable to find hw interface for index %u",
1111 old_name = hw->name;
1114 hw->name = format (0, "%s", new_name);
1116 // remove the old name to hw_if_index mapping and install the new one
1117 hash_unset_mem (im->hw_interface_by_name, old_name);
1118 hash_set_mem (im->hw_interface_by_name, hw->name, hw_if_index);
1120 // rename tx/output nodes
1121 vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
1122 vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);
1124 // free the old name vector
1125 vec_free (old_name);