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_output.c: interface output node
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/feature/feature.h>
46 u8 data[128 - sizeof (u32)];
48 interface_output_trace_t;
51 format_vnet_interface_output_trace (u8 * s, va_list * va)
53 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
54 vlib_node_t *node = va_arg (*va, vlib_node_t *);
55 interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
56 vnet_main_t *vnm = vnet_get_main ();
57 vnet_sw_interface_t *si;
60 if (t->sw_if_index != (u32) ~ 0)
62 indent = format_get_indent (s);
64 if (pool_is_free_index
65 (vnm->interface_main.sw_interfaces, t->sw_if_index))
67 /* the interface may have been deleted by the time the trace is printed */
68 s = format (s, "sw_if_index: %d\n%U%U",
70 format_white_space, indent,
71 node->format_buffer ? node->
72 format_buffer : format_hex_bytes, t->data,
77 si = vnet_get_sw_interface (vnm, t->sw_if_index);
79 s = format (s, "%U\n%U%U",
80 format_vnet_sw_interface_name, vnm, si,
81 format_white_space, indent,
82 node->format_buffer ? node->
83 format_buffer : format_hex_bytes, t->data,
91 vnet_interface_output_trace (vlib_main_t * vm,
92 vlib_node_runtime_t * node,
93 vlib_frame_t * frame, uword n_buffers)
98 from = vlib_frame_args (frame);
103 vlib_buffer_t *b0, *b1;
104 interface_output_trace_t *t0, *t1;
106 /* Prefetch next iteration. */
107 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
108 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
113 b0 = vlib_get_buffer (vm, bi0);
114 b1 = vlib_get_buffer (vm, bi1);
116 if (b0->flags & VLIB_BUFFER_IS_TRACED)
118 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
119 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
120 clib_memcpy (t0->data, vlib_buffer_get_current (b0),
123 if (b1->flags & VLIB_BUFFER_IS_TRACED)
125 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
126 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
127 clib_memcpy (t1->data, vlib_buffer_get_current (b1),
138 interface_output_trace_t *t0;
142 b0 = vlib_get_buffer (vm, bi0);
144 if (b0->flags & VLIB_BUFFER_IS_TRACED)
146 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
147 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
148 clib_memcpy (t0->data, vlib_buffer_get_current (b0),
156 static never_inline u32
157 slow_path (vlib_main_t * vm,
160 u32 n_left_to_tx, u32 * to_tx, u32 * n_slow_bytes_result)
162 /* We've already enqueued a single buffer. */
164 u32 n_slow_bytes = 0;
166 while (n_left_to_tx > 0)
172 n_slow_bytes += vlib_buffer_length_in_chain (vm, b);
174 /* Be grumpy about zero length buffers for benefit of
175 driver tx function. */
176 ASSERT (b->current_length > 0);
178 if (!(b->flags & VLIB_BUFFER_NEXT_PRESENT))
182 b = vlib_get_buffer (vm, bi);
185 /* Ran out of space in next frame trying to enqueue buffers? */
186 if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
189 *n_slow_bytes_result = n_slow_bytes;
194 * Increment TX stats. Roll up consecutive increments to the same sw_if_index
195 * into one increment.
197 static_always_inline void
198 incr_output_stats (vnet_main_t * vnm,
202 u32 * last_sw_if_index, u32 * n_packets, u32 * n_bytes)
204 vnet_interface_main_t *im;
206 if (PREDICT_TRUE (sw_if_index == *last_sw_if_index))
213 if (PREDICT_TRUE (*last_sw_if_index != ~0))
215 im = &vnm->interface_main;
217 vlib_increment_combined_counter (im->combined_sw_if_counters
218 + VNET_INTERFACE_COUNTER_TX,
221 *n_packets, *n_bytes);
223 *last_sw_if_index = sw_if_index;
230 /* Interface output functions. */
232 vnet_interface_output_node_flatten (vlib_main_t * vm,
233 vlib_node_runtime_t * node,
234 vlib_frame_t * frame)
236 vnet_main_t *vnm = vnet_get_main ();
237 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
238 vnet_sw_interface_t *si;
239 vnet_hw_interface_t *hi;
240 u32 n_left_to_tx, *from, *from_end, *to_tx;
241 u32 n_bytes, n_buffers, n_packets;
242 u32 last_sw_if_index;
243 u32 thread_index = vm->thread_index;
245 n_buffers = frame->n_vectors;
247 if (node->flags & VLIB_NODE_FLAG_TRACE)
248 vnet_interface_output_trace (vm, node, frame, n_buffers);
250 from = vlib_frame_args (frame);
253 return vlib_error_drop_buffers (vm, node, from,
254 /* buffer stride */ 1,
256 VNET_INTERFACE_OUTPUT_NEXT_DROP,
258 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
260 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
261 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
262 if (!(si->flags & (VNET_SW_INTERFACE_FLAG_ADMIN_UP |
263 VNET_SW_INTERFACE_FLAG_BOND_SLAVE)) ||
264 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
266 vlib_simple_counter_main_t *cm;
268 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
269 VNET_INTERFACE_COUNTER_TX_ERROR);
270 vlib_increment_simple_counter (cm, thread_index,
271 rt->sw_if_index, n_buffers);
272 return vlib_error_drop_buffers (vm, node, from,
273 /* buffer stride */ 1,
275 VNET_INTERFACE_OUTPUT_NEXT_DROP,
277 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
280 from_end = from + n_buffers;
282 /* Total byte count of all buffers. */
285 last_sw_if_index = ~0;
287 while (from < from_end)
289 /* Get new next frame since previous incomplete frame may have less
290 than VNET_FRAME_SIZE vectors in it. */
291 vlib_get_new_next_frame (vm, node, VNET_INTERFACE_OUTPUT_NEXT_TX,
292 to_tx, n_left_to_tx);
294 while (from + 4 <= from_end && n_left_to_tx >= 2)
297 vlib_buffer_t *b0, *b1;
299 /* Prefetch next iteration. */
300 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
301 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
311 b0 = vlib_get_buffer (vm, bi0);
312 b1 = vlib_get_buffer (vm, bi1);
314 /* Be grumpy about zero length buffers for benefit of
315 driver tx function. */
316 ASSERT (b0->current_length > 0);
317 ASSERT (b1->current_length > 0);
320 ((b0->flags | b1->flags) & VLIB_BUFFER_NEXT_PRESENT))
322 u32 n_buffers, n_slow_bytes, i;
329 /* Do slow path two times. */
330 for (i = 0; i < 2; i++)
332 u32 bi = i ? bi1 : bi0;
333 vlib_buffer_t *b = i ? b1 : b0;
335 n_buffers = slow_path (vm, bi, b,
336 n_left_to_tx, to_tx, &n_slow_bytes);
338 /* Not enough room for single packet? */
344 n_left_to_tx -= n_buffers;
345 incr_output_stats (vnm, thread_index, n_slow_bytes,
346 vnet_buffer (b)->sw_if_index[VLIB_TX],
347 &last_sw_if_index, &n_packets, &n_bytes);
352 incr_output_stats (vnm, thread_index,
353 vlib_buffer_length_in_chain (vm, b0),
354 vnet_buffer (b0)->sw_if_index[VLIB_TX],
355 &last_sw_if_index, &n_packets, &n_bytes);
356 incr_output_stats (vnm, thread_index,
357 vlib_buffer_length_in_chain (vm, b0),
358 vnet_buffer (b1)->sw_if_index[VLIB_TX],
359 &last_sw_if_index, &n_packets, &n_bytes);
363 while (from + 1 <= from_end && n_left_to_tx >= 1)
374 b0 = vlib_get_buffer (vm, bi0);
376 /* Be grumpy about zero length buffers for benefit of
377 driver tx function. */
378 ASSERT (b0->current_length > 0);
380 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_NEXT_PRESENT))
382 u32 n_buffers, n_slow_bytes;
389 n_buffers = slow_path (vm, bi0, b0,
390 n_left_to_tx, to_tx, &n_slow_bytes);
392 /* Not enough room for single packet? */
398 n_left_to_tx -= n_buffers;
400 incr_output_stats (vnm, thread_index,
401 vlib_buffer_length_in_chain (vm, b0),
402 vnet_buffer (b0)->sw_if_index[VLIB_TX],
403 &last_sw_if_index, &n_packets, &n_bytes);
407 vlib_put_next_frame (vm, node, VNET_INTERFACE_OUTPUT_NEXT_TX,
411 /* Final update of interface stats. */
412 incr_output_stats (vnm, thread_index, 0, ~0, /* ~0 will flush stats */
413 &last_sw_if_index, &n_packets, &n_bytes);
418 VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node_flatten);
419 CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node_flatten);
422 vnet_interface_output_node (vlib_main_t * vm,
423 vlib_node_runtime_t * node, vlib_frame_t * frame)
425 vnet_main_t *vnm = vnet_get_main ();
426 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
427 vnet_sw_interface_t *si;
428 vnet_hw_interface_t *hi;
429 u32 n_left_to_tx, *from, *from_end, *to_tx;
430 u32 n_bytes, n_buffers, n_packets;
431 u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3;
432 u32 thread_index = vm->thread_index;
433 vnet_interface_main_t *im = &vnm->interface_main;
434 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
435 u32 current_config_index = ~0;
436 u8 arc = im->output_feature_arc_index;
438 n_buffers = frame->n_vectors;
440 if (node->flags & VLIB_NODE_FLAG_TRACE)
441 vnet_interface_output_trace (vm, node, frame, n_buffers);
443 from = vlib_frame_args (frame);
446 return vlib_error_drop_buffers (vm, node, from,
447 /* buffer stride */ 1,
449 VNET_INTERFACE_OUTPUT_NEXT_DROP,
451 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
453 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
454 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
455 if (!(si->flags & (VNET_SW_INTERFACE_FLAG_ADMIN_UP |
456 VNET_SW_INTERFACE_FLAG_BOND_SLAVE)) ||
457 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
459 vlib_simple_counter_main_t *cm;
461 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
462 VNET_INTERFACE_COUNTER_TX_ERROR);
463 vlib_increment_simple_counter (cm, thread_index,
464 rt->sw_if_index, n_buffers);
466 return vlib_error_drop_buffers (vm, node, from,
467 /* buffer stride */ 1,
469 VNET_INTERFACE_OUTPUT_NEXT_DROP,
471 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
474 from_end = from + n_buffers;
476 /* Total byte count of all buffers. */
480 /* interface-output feature arc handling */
481 if (PREDICT_FALSE (vnet_have_features (arc, rt->sw_if_index)))
483 vnet_feature_config_main_t *fcm;
484 fcm = vnet_feature_get_config_main (arc);
485 current_config_index = vnet_get_feature_config_index (arc,
487 vnet_get_config_data (&fcm->config_main, ¤t_config_index,
491 while (from < from_end)
493 /* Get new next frame since previous incomplete frame may have less
494 than VNET_FRAME_SIZE vectors in it. */
495 vlib_get_new_next_frame (vm, node, next_index, to_tx, n_left_to_tx);
497 while (from + 8 <= from_end && n_left_to_tx >= 4)
499 u32 bi0, bi1, bi2, bi3;
500 vlib_buffer_t *b0, *b1, *b2, *b3;
501 u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
503 /* Prefetch next iteration. */
504 vlib_prefetch_buffer_with_index (vm, from[4], LOAD);
505 vlib_prefetch_buffer_with_index (vm, from[5], LOAD);
506 vlib_prefetch_buffer_with_index (vm, from[6], LOAD);
507 vlib_prefetch_buffer_with_index (vm, from[7], LOAD);
521 b0 = vlib_get_buffer (vm, bi0);
522 b1 = vlib_get_buffer (vm, bi1);
523 b2 = vlib_get_buffer (vm, bi2);
524 b3 = vlib_get_buffer (vm, bi3);
526 /* Be grumpy about zero length buffers for benefit of
527 driver tx function. */
528 ASSERT (b0->current_length > 0);
529 ASSERT (b1->current_length > 0);
530 ASSERT (b2->current_length > 0);
531 ASSERT (b3->current_length > 0);
533 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
534 n_bytes_b1 = vlib_buffer_length_in_chain (vm, b1);
535 n_bytes_b2 = vlib_buffer_length_in_chain (vm, b2);
536 n_bytes_b3 = vlib_buffer_length_in_chain (vm, b3);
537 tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
538 tx_swif1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
539 tx_swif2 = vnet_buffer (b2)->sw_if_index[VLIB_TX];
540 tx_swif3 = vnet_buffer (b3)->sw_if_index[VLIB_TX];
542 n_bytes += n_bytes_b0 + n_bytes_b1;
543 n_bytes += n_bytes_b2 + n_bytes_b3;
546 if (PREDICT_FALSE (current_config_index != ~0))
548 b0->feature_arc_index = arc;
549 b1->feature_arc_index = arc;
550 b2->feature_arc_index = arc;
551 b3->feature_arc_index = arc;
552 b0->current_config_index = current_config_index;
553 b1->current_config_index = current_config_index;
554 b2->current_config_index = current_config_index;
555 b3->current_config_index = current_config_index;
558 /* update vlan subif tx counts, if required */
559 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
561 vlib_increment_combined_counter (im->combined_sw_if_counters +
562 VNET_INTERFACE_COUNTER_TX,
563 thread_index, tx_swif0, 1,
567 if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index))
570 vlib_increment_combined_counter (im->combined_sw_if_counters +
571 VNET_INTERFACE_COUNTER_TX,
572 thread_index, tx_swif1, 1,
576 if (PREDICT_FALSE (tx_swif2 != rt->sw_if_index))
579 vlib_increment_combined_counter (im->combined_sw_if_counters +
580 VNET_INTERFACE_COUNTER_TX,
581 thread_index, tx_swif2, 1,
584 if (PREDICT_FALSE (tx_swif3 != rt->sw_if_index))
587 vlib_increment_combined_counter (im->combined_sw_if_counters +
588 VNET_INTERFACE_COUNTER_TX,
589 thread_index, tx_swif3, 1,
594 while (from + 1 <= from_end && n_left_to_tx >= 1)
606 b0 = vlib_get_buffer (vm, bi0);
608 /* Be grumpy about zero length buffers for benefit of
609 driver tx function. */
610 ASSERT (b0->current_length > 0);
612 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
613 tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
614 n_bytes += n_bytes_b0;
617 if (PREDICT_FALSE (current_config_index != ~0))
619 b0->feature_arc_index = arc;
620 b0->current_config_index = current_config_index;
623 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
626 vlib_increment_combined_counter (im->combined_sw_if_counters +
627 VNET_INTERFACE_COUNTER_TX,
628 thread_index, tx_swif0, 1,
633 vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
636 /* Update main interface stats. */
637 vlib_increment_combined_counter (im->combined_sw_if_counters
638 + VNET_INTERFACE_COUNTER_TX,
640 rt->sw_if_index, n_packets, n_bytes);
644 VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node);
645 CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node);
647 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
649 vnet_per_buffer_interface_output (vlib_main_t * vm,
650 vlib_node_runtime_t * node,
651 vlib_frame_t * frame)
653 vnet_main_t *vnm = vnet_get_main ();
654 u32 n_left_to_next, *from, *to_next;
655 u32 n_left_from, next_index;
657 n_left_from = frame->n_vectors;
659 from = vlib_frame_args (frame);
660 next_index = node->cached_next_index;
662 while (n_left_from > 0)
664 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
666 while (n_left_from >= 4 && n_left_to_next >= 2)
668 u32 bi0, bi1, next0, next1;
669 vlib_buffer_t *b0, *b1;
670 vnet_hw_interface_t *hi0, *hi1;
672 /* Prefetch next iteration. */
673 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
674 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
685 b0 = vlib_get_buffer (vm, bi0);
686 b1 = vlib_get_buffer (vm, bi1);
689 vnet_get_sup_hw_interface (vnm,
690 vnet_buffer (b0)->sw_if_index
693 vnet_get_sup_hw_interface (vnm,
694 vnet_buffer (b1)->sw_if_index
697 next0 = hi0->hw_if_index;
698 next1 = hi1->hw_if_index;
700 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
701 n_left_to_next, bi0, bi1, next0,
705 while (n_left_from > 0 && n_left_to_next > 0)
709 vnet_hw_interface_t *hi0;
718 b0 = vlib_get_buffer (vm, bi0);
721 vnet_get_sup_hw_interface (vnm,
722 vnet_buffer (b0)->sw_if_index
725 next0 = hi0->hw_if_index;
727 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
728 n_left_to_next, bi0, next0);
731 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
734 return frame->n_vectors;
738 counter_index (vlib_main_t * vm, vlib_error_t e)
743 ni = vlib_error_get_node (e);
744 n = vlib_get_node (vm, ni);
746 ci = vlib_error_get_code (e);
747 ASSERT (ci < n->n_errors);
749 ci += n->error_heap_index;
755 format_vnet_error_trace (u8 * s, va_list * va)
757 vlib_main_t *vm = va_arg (*va, vlib_main_t *);
758 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
759 vlib_error_t *e = va_arg (*va, vlib_error_t *);
760 vlib_node_t *error_node;
761 vlib_error_main_t *em = &vm->error_main;
764 error_node = vlib_get_node (vm, vlib_error_get_node (e[0]));
765 i = counter_index (vm, e[0]);
766 s = format (s, "%v: %s", error_node->name, em->error_strings_heap[i]);
772 trace_errors_with_buffers (vlib_main_t * vm,
773 vlib_node_runtime_t * node, vlib_frame_t * frame)
775 u32 n_left, *buffers;
777 buffers = vlib_frame_vector_args (frame);
778 n_left = frame->n_vectors;
783 vlib_buffer_t *b0, *b1;
784 vlib_error_t *t0, *t1;
786 /* Prefetch next iteration. */
787 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
788 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
793 b0 = vlib_get_buffer (vm, bi0);
794 b1 = vlib_get_buffer (vm, bi1);
796 if (b0->flags & VLIB_BUFFER_IS_TRACED)
798 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
801 if (b1->flags & VLIB_BUFFER_IS_TRACED)
803 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
818 b0 = vlib_get_buffer (vm, bi0);
820 if (b0->flags & VLIB_BUFFER_IS_TRACED)
822 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
831 validate_error (vlib_main_t * vm, vlib_error_t * e, u32 index)
833 uword node_index = vlib_error_get_node (e[0]);
834 uword code = vlib_error_get_code (e[0]);
837 if (node_index >= vec_len (vm->node_main.nodes))
838 return format (0, "[%d], node index out of range 0x%x, error 0x%x",
839 index, node_index, e[0]);
841 n = vlib_get_node (vm, node_index);
842 if (code >= n->n_errors)
843 return format (0, "[%d], code %d out of range for node %v",
844 index, code, n->name);
850 validate_error_frame (vlib_main_t * vm,
851 vlib_node_runtime_t * node, vlib_frame_t * f)
853 u32 *buffers = vlib_frame_args (f);
858 for (i = 0; i < f->n_vectors; i++)
860 b = vlib_get_buffer (vm, buffers[i]);
861 msg = validate_error (vm, &b->error, i);
871 VNET_ERROR_DISPOSITION_DROP,
872 VNET_ERROR_DISPOSITION_PUNT,
873 VNET_ERROR_N_DISPOSITION,
874 } vnet_error_disposition_t;
877 do_packet (vlib_main_t * vm, vlib_error_t a)
879 vlib_error_main_t *em = &vm->error_main;
880 u32 i = counter_index (vm, a);
881 em->counters[i] += 1;
882 vlib_error_elog_count (vm, i, 1);
885 static_always_inline uword
886 process_drop_punt (vlib_main_t * vm,
887 vlib_node_runtime_t * node,
888 vlib_frame_t * frame, vnet_error_disposition_t disposition)
890 vnet_main_t *vnm = vnet_get_main ();
891 vlib_error_main_t *em = &vm->error_main;
892 u32 *buffers, *first_buffer;
893 vlib_error_t current_error;
894 u32 current_counter_index, n_errors_left;
895 u32 current_sw_if_index, n_errors_current_sw_if_index;
897 vlib_simple_counter_main_t *cm;
898 u32 thread_index = vm->thread_index;
900 static vlib_error_t memory[VNET_ERROR_N_DISPOSITION];
901 static char memory_init[VNET_ERROR_N_DISPOSITION];
903 buffers = vlib_frame_args (frame);
904 first_buffer = buffers;
907 vlib_buffer_t *b = vlib_get_buffer (vm, first_buffer[0]);
909 if (!memory_init[disposition])
911 memory_init[disposition] = 1;
912 memory[disposition] = b->error;
915 current_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
916 n_errors_current_sw_if_index = 0;
919 current_error = memory[disposition];
920 current_counter_index = counter_index (vm, memory[disposition]);
921 current_counter = em->counters[current_counter_index];
923 if (node->flags & VLIB_NODE_FLAG_TRACE)
924 trace_errors_with_buffers (vm, node, frame);
926 n_errors_left = frame->n_vectors;
927 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
928 (disposition == VNET_ERROR_DISPOSITION_PUNT
929 ? VNET_INTERFACE_COUNTER_PUNT
930 : VNET_INTERFACE_COUNTER_DROP));
932 while (n_errors_left >= 2)
934 vlib_buffer_t *b0, *b1;
935 vnet_sw_interface_t *sw_if0, *sw_if1;
938 u32 sw_if_index0, sw_if_index1;
946 b0 = vlib_get_buffer (vm, bi0);
947 b1 = vlib_get_buffer (vm, bi1);
952 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
953 sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
955 /* Speculate that sw_if_index == sw_if_index[01]. */
956 n_errors_current_sw_if_index += 2;
958 /* Speculatively assume all 2 (node, code) pairs are equal
959 to current (node, code). */
960 current_counter += 2;
962 if (PREDICT_FALSE (e0 != current_error
963 || e1 != current_error
964 || sw_if_index0 != current_sw_if_index
965 || sw_if_index1 != current_sw_if_index))
967 current_counter -= 2;
968 n_errors_current_sw_if_index -= 2;
970 vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1);
971 vlib_increment_simple_counter (cm, thread_index, sw_if_index1, 1);
973 /* Increment super-interface drop/punt counters for
975 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
976 vlib_increment_simple_counter
977 (cm, thread_index, sw_if0->sup_sw_if_index,
978 sw_if0->sup_sw_if_index != sw_if_index0);
980 sw_if1 = vnet_get_sw_interface (vnm, sw_if_index1);
981 vlib_increment_simple_counter
982 (cm, thread_index, sw_if1->sup_sw_if_index,
983 sw_if1->sup_sw_if_index != sw_if_index1);
985 em->counters[current_counter_index] = current_counter;
989 /* For 2 repeated errors, change current error. */
990 if (e0 == e1 && e1 != current_error)
993 current_counter_index = counter_index (vm, e0);
995 current_counter = em->counters[current_counter_index];
999 while (n_errors_left >= 1)
1002 vnet_sw_interface_t *sw_if0;
1004 u32 bi0, sw_if_index0;
1010 current_counter += 1;
1012 b0 = vlib_get_buffer (vm, bi0);
1015 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
1017 /* Increment drop/punt counters. */
1018 vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1);
1020 /* Increment super-interface drop/punt counters for sub-interfaces. */
1021 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
1022 vlib_increment_simple_counter (cm, thread_index,
1023 sw_if0->sup_sw_if_index,
1024 sw_if0->sup_sw_if_index != sw_if_index0);
1026 if (PREDICT_FALSE (e0 != current_error))
1028 current_counter -= 1;
1030 vlib_error_elog_count (vm, current_counter_index,
1032 - em->counters[current_counter_index]));
1034 em->counters[current_counter_index] = current_counter;
1038 current_counter_index = counter_index (vm, e0);
1039 current_counter = em->counters[current_counter_index];
1043 if (n_errors_current_sw_if_index > 0)
1045 vnet_sw_interface_t *si;
1047 vlib_increment_simple_counter (cm, thread_index, current_sw_if_index,
1048 n_errors_current_sw_if_index);
1050 si = vnet_get_sw_interface (vnm, current_sw_if_index);
1051 if (si->sup_sw_if_index != current_sw_if_index)
1052 vlib_increment_simple_counter (cm, thread_index, si->sup_sw_if_index,
1053 n_errors_current_sw_if_index);
1056 vlib_error_elog_count (vm, current_counter_index,
1058 - em->counters[current_counter_index]));
1060 /* Return cached counter. */
1061 em->counters[current_counter_index] = current_counter;
1063 /* Save memory for next iteration. */
1064 memory[disposition] = current_error;
1066 if (disposition == VNET_ERROR_DISPOSITION_DROP || !vm->os_punt_frame)
1068 vlib_buffer_free (vm, first_buffer, frame->n_vectors);
1070 /* If there is no punt function, free the frame as well. */
1071 if (disposition == VNET_ERROR_DISPOSITION_PUNT && !vm->os_punt_frame)
1072 vlib_frame_free (vm, node, frame);
1075 vm->os_punt_frame (vm, node, frame);
1077 return frame->n_vectors;
1081 pcap_drop_trace (vlib_main_t * vm,
1082 vnet_interface_main_t * im, vlib_frame_t * f)
1085 u32 n_left = f->n_vectors;
1086 vlib_buffer_t *b0, *p1;
1088 i16 save_current_data;
1089 u16 save_current_length;
1091 from = vlib_frame_vector_args (f);
1095 if (PREDICT_TRUE (n_left > 1))
1097 p1 = vlib_get_buffer (vm, from[1]);
1098 vlib_prefetch_buffer_header (p1, LOAD);
1102 b0 = vlib_get_buffer (vm, bi0);
1106 /* See if we're pointedly ignoring this specific error */
1107 if (im->pcap_drop_filter_hash
1108 && hash_get (im->pcap_drop_filter_hash, b0->error))
1111 /* Trace all drops, or drops received on a specific interface */
1112 if (im->pcap_sw_if_index == 0 ||
1113 im->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX])
1115 save_current_data = b0->current_data;
1116 save_current_length = b0->current_length;
1119 * Typically, we'll need to rewind the buffer
1121 if (b0->current_data > 0)
1122 vlib_buffer_advance (b0, (word) - b0->current_data);
1124 pcap_add_buffer (&im->pcap_main, vm, bi0, 512);
1126 b0->current_data = save_current_data;
1127 b0->current_length = save_current_length;
1133 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
1135 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
1137 if (im->pcap_drop_filter_hash == 0)
1138 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
1141 hash_set (im->pcap_drop_filter_hash, error_index, 1);
1143 hash_unset (im->pcap_drop_filter_hash, error_index);
1147 process_drop (vlib_main_t * vm,
1148 vlib_node_runtime_t * node, vlib_frame_t * frame)
1150 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
1152 if (PREDICT_FALSE (im->drop_pcap_enable))
1153 pcap_drop_trace (vm, im, frame);
1155 return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
1159 process_punt (vlib_main_t * vm,
1160 vlib_node_runtime_t * node, vlib_frame_t * frame)
1162 return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
1166 VLIB_REGISTER_NODE (drop_buffers,static) = {
1167 .function = process_drop,
1168 .name = "error-drop",
1169 .flags = VLIB_NODE_FLAG_IS_DROP,
1170 .vector_size = sizeof (u32),
1171 .format_trace = format_vnet_error_trace,
1172 .validate_frame = validate_error_frame,
1176 VLIB_NODE_FUNCTION_MULTIARCH (drop_buffers, process_drop);
1179 VLIB_REGISTER_NODE (punt_buffers,static) = {
1180 .function = process_punt,
1181 .flags = (VLIB_NODE_FLAG_FRAME_NO_FREE_AFTER_DISPATCH
1182 | VLIB_NODE_FLAG_IS_PUNT),
1183 .name = "error-punt",
1184 .vector_size = sizeof (u32),
1185 .format_trace = format_vnet_error_trace,
1186 .validate_frame = validate_error_frame,
1190 VLIB_NODE_FUNCTION_MULTIARCH (punt_buffers, process_punt);
1193 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node,static) = {
1194 .function = vnet_per_buffer_interface_output,
1195 .name = "interface-output",
1196 .vector_size = sizeof (u32),
1200 VLIB_NODE_FUNCTION_MULTIARCH (vnet_per_buffer_interface_output_node,
1201 vnet_per_buffer_interface_output);
1204 interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1205 vlib_frame_t * from_frame)
1207 vnet_main_t *vnm = vnet_get_main ();
1208 u32 last_sw_if_index = ~0;
1209 vlib_frame_t *to_frame = 0;
1210 vnet_hw_interface_t *hw = 0;
1211 u32 *from, *to_next = 0;
1214 from = vlib_frame_vector_args (from_frame);
1215 n_left_from = from_frame->n_vectors;
1216 while (n_left_from > 0)
1225 b0 = vlib_get_buffer (vm, bi0);
1226 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
1228 if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
1232 hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
1233 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1235 last_sw_if_index = sw_if_index0;
1236 hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
1237 to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
1238 to_next = vlib_frame_vector_args (to_frame);
1243 to_frame->n_vectors++;
1245 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1246 return from_frame->n_vectors;
1250 VLIB_REGISTER_NODE (interface_tx, static) = {
1251 .function = interface_tx_node_fn,
1252 .name = "interface-tx",
1253 .vector_size = sizeof (u32),
1260 VNET_FEATURE_ARC_INIT (interface_output, static) =
1262 .arc_name = "interface-output",
1263 .start_nodes = VNET_FEATURES (0),
1264 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1267 VNET_FEATURE_INIT (span_tx, static) = {
1268 .arc_name = "interface-output",
1269 .node_name = "span-output",
1270 .runs_before = VNET_FEATURES ("interface-tx"),
1273 VNET_FEATURE_INIT (interface_tx, static) = {
1274 .arc_name = "interface-output",
1275 .node_name = "interface-tx",
1281 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1285 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1288 next_index = vlib_node_add_next_with_slot
1289 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1290 hi->output_node_index,
1291 /* next_index */ hw_if_index);
1293 ASSERT (next_index == hw_if_index);
1298 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1299 (vnet_per_buffer_interface_output_hw_interface_add_del);
1301 static clib_error_t *
1302 pcap_drop_trace_command_fn (vlib_main_t * vm,
1303 unformat_input_t * input,
1304 vlib_cli_command_t * cmd)
1306 vnet_main_t *vnm = vnet_get_main ();
1307 vnet_interface_main_t *im = &vnm->interface_main;
1311 clib_error_t *error = 0;
1313 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1315 if (unformat (input, "on"))
1317 if (im->drop_pcap_enable == 0)
1319 if (im->pcap_filename == 0)
1320 im->pcap_filename = format (0, "/tmp/drop.pcap%c", 0);
1322 memset (&im->pcap_main, 0, sizeof (im->pcap_main));
1323 im->pcap_main.file_name = (char *) im->pcap_filename;
1324 im->pcap_main.n_packets_to_capture = 100;
1325 if (im->pcap_pkts_to_capture)
1326 im->pcap_main.n_packets_to_capture = im->pcap_pkts_to_capture;
1328 im->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
1329 im->drop_pcap_enable = 1;
1331 vlib_cli_output (vm, "pcap drop capture on...");
1335 vlib_cli_output (vm, "pcap drop capture already on...");
1339 else if (unformat (input, "off"))
1343 if (im->drop_pcap_enable)
1345 vlib_cli_output (vm, "captured %d pkts...",
1346 im->pcap_main.n_packets_captured);
1347 if (im->pcap_main.n_packets_captured)
1349 im->pcap_main.n_packets_to_capture =
1350 im->pcap_main.n_packets_captured;
1351 error = pcap_write (&im->pcap_main);
1353 clib_error_report (error);
1355 vlib_cli_output (vm, "saved to %s...", im->pcap_filename);
1360 vlib_cli_output (vm, "pcap drop capture already off...");
1363 im->drop_pcap_enable = 0;
1365 else if (unformat (input, "max %d", &max))
1367 im->pcap_pkts_to_capture = max;
1371 else if (unformat (input, "intfc %U",
1372 unformat_vnet_sw_interface, vnm,
1373 &im->pcap_sw_if_index))
1375 else if (unformat (input, "intfc any"))
1377 im->pcap_sw_if_index = 0;
1380 else if (unformat (input, "file %s", &filename))
1382 u8 *chroot_filename;
1383 /* Brain-police user path input */
1384 if (strstr ((char *) filename, "..")
1385 || index ((char *) filename, '/'))
1387 vlib_cli_output (vm, "illegal characters in filename '%s'",
1392 chroot_filename = format (0, "/tmp/%s%c", filename, 0);
1393 vec_free (filename);
1395 if (im->pcap_filename)
1396 vec_free (im->pcap_filename);
1397 im->pcap_filename = chroot_filename;
1398 im->pcap_main.file_name = (char *) im->pcap_filename;
1401 else if (unformat (input, "status"))
1403 if (im->drop_pcap_enable == 0)
1405 vlib_cli_output (vm, "pcap drop capture is off...");
1409 vlib_cli_output (vm, "pcap drop capture: %d of %d pkts...",
1410 im->pcap_main.n_packets_captured,
1411 im->pcap_main.n_packets_to_capture);
1420 return clib_error_return (0, "unknown input `%U'",
1421 format_unformat_error, input);
1427 VLIB_CLI_COMMAND (pcap_trace_command, static) = {
1428 .path = "pcap drop trace",
1430 "pcap drop trace on off max <nn> intfc <intfc> file <name> status",
1431 .function = pcap_drop_trace_command_fn,
1436 * fd.io coding-style-patch-verification: ON
1439 * eval: (c-set-style "gnu")