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>
45 u8 data[128 - sizeof (u32)];
47 interface_output_trace_t;
50 format_vnet_interface_output_trace (u8 * s, va_list * va)
52 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
53 vlib_node_t *node = va_arg (*va, vlib_node_t *);
54 interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
55 vnet_main_t *vnm = vnet_get_main ();
56 vnet_sw_interface_t *si;
59 if (t->sw_if_index != (u32) ~ 0)
61 indent = format_get_indent (s);
63 if (pool_is_free_index
64 (vnm->interface_main.sw_interfaces, t->sw_if_index))
66 /* the interface may have been deleted by the time the trace is printed */
67 s = format (s, "sw_if_index: %d\n%U%U",
69 format_white_space, indent,
70 node->format_buffer ? node->
71 format_buffer : format_hex_bytes, t->data,
76 si = vnet_get_sw_interface (vnm, t->sw_if_index);
78 s = format (s, "%U\n%U%U",
79 format_vnet_sw_interface_name, vnm, si,
80 format_white_space, indent,
81 node->format_buffer ? node->
82 format_buffer : format_hex_bytes, t->data,
90 vnet_interface_output_trace (vlib_main_t * vm,
91 vlib_node_runtime_t * node,
92 vlib_frame_t * frame, uword n_buffers)
97 from = vlib_frame_args (frame);
102 vlib_buffer_t *b0, *b1;
103 interface_output_trace_t *t0, *t1;
105 /* Prefetch next iteration. */
106 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
107 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
112 b0 = vlib_get_buffer (vm, bi0);
113 b1 = vlib_get_buffer (vm, bi1);
115 if (b0->flags & VLIB_BUFFER_IS_TRACED)
117 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
118 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
119 clib_memcpy (t0->data, vlib_buffer_get_current (b0),
122 if (b1->flags & VLIB_BUFFER_IS_TRACED)
124 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
125 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
126 clib_memcpy (t1->data, vlib_buffer_get_current (b1),
137 interface_output_trace_t *t0;
141 b0 = vlib_get_buffer (vm, bi0);
143 if (b0->flags & VLIB_BUFFER_IS_TRACED)
145 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
146 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
147 clib_memcpy (t0->data, vlib_buffer_get_current (b0),
155 static never_inline u32
156 slow_path (vlib_main_t * vm,
159 u32 n_left_to_tx, u32 * to_tx, u32 * n_slow_bytes_result)
161 /* We've already enqueued a single buffer. */
163 u32 n_slow_bytes = 0;
165 while (n_left_to_tx > 0)
171 n_slow_bytes += vlib_buffer_length_in_chain (vm, b);
173 /* Be grumpy about zero length buffers for benefit of
174 driver tx function. */
175 ASSERT (b->current_length > 0);
177 if (!(b->flags & VLIB_BUFFER_NEXT_PRESENT))
181 b = vlib_get_buffer (vm, bi);
184 /* Ran out of space in next frame trying to enqueue buffers? */
185 if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
188 *n_slow_bytes_result = n_slow_bytes;
193 * Increment TX stats. Roll up consecutive increments to the same sw_if_index
194 * into one increment.
196 static_always_inline void
197 incr_output_stats (vnet_main_t * vnm,
201 u32 * last_sw_if_index, u32 * n_packets, u32 * n_bytes)
203 vnet_interface_main_t *im;
205 if (PREDICT_TRUE (sw_if_index == *last_sw_if_index))
212 if (PREDICT_TRUE (*last_sw_if_index != ~0))
214 im = &vnm->interface_main;
216 vlib_increment_combined_counter (im->combined_sw_if_counters
217 + VNET_INTERFACE_COUNTER_TX,
220 *n_packets, *n_bytes);
222 *last_sw_if_index = sw_if_index;
229 /* Interface output functions. */
231 vnet_interface_output_node (vlib_main_t * vm,
232 vlib_node_runtime_t * node, vlib_frame_t * frame)
234 vnet_main_t *vnm = vnet_get_main ();
235 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
236 vnet_sw_interface_t *si;
237 vnet_hw_interface_t *hi;
238 u32 n_left_to_tx, *from, *from_end, *to_tx;
239 u32 n_bytes, n_buffers, n_packets;
240 u32 last_sw_if_index;
241 u32 cpu_index = vm->cpu_index;
243 n_buffers = frame->n_vectors;
245 if (node->flags & VLIB_NODE_FLAG_TRACE)
246 vnet_interface_output_trace (vm, node, frame, n_buffers);
248 from = vlib_frame_args (frame);
251 return vlib_error_drop_buffers (vm, node, from,
252 /* buffer stride */ 1,
254 VNET_INTERFACE_OUTPUT_NEXT_DROP,
256 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
258 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
259 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
260 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
261 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
263 vlib_simple_counter_main_t *cm;
265 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
266 VNET_INTERFACE_COUNTER_TX_ERROR);
267 vlib_increment_simple_counter (cm, cpu_index,
268 rt->sw_if_index, n_buffers);
269 return vlib_error_drop_buffers (vm, node, from,
270 /* buffer stride */ 1,
272 VNET_INTERFACE_OUTPUT_NEXT_DROP,
274 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
277 from_end = from + n_buffers;
279 /* Total byte count of all buffers. */
282 last_sw_if_index = ~0;
284 while (from < from_end)
286 /* Get new next frame since previous incomplete frame may have less
287 than VNET_FRAME_SIZE vectors in it. */
288 vlib_get_new_next_frame (vm, node, VNET_INTERFACE_OUTPUT_NEXT_TX,
289 to_tx, n_left_to_tx);
291 while (from + 4 <= from_end && n_left_to_tx >= 2)
294 vlib_buffer_t *b0, *b1;
296 /* Prefetch next iteration. */
297 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
298 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
308 b0 = vlib_get_buffer (vm, bi0);
309 b1 = vlib_get_buffer (vm, bi1);
311 /* Be grumpy about zero length buffers for benefit of
312 driver tx function. */
313 ASSERT (b0->current_length > 0);
314 ASSERT (b1->current_length > 0);
317 ((b0->flags | b1->flags) & VLIB_BUFFER_NEXT_PRESENT))
319 u32 n_buffers, n_slow_bytes, i;
326 /* Do slow path two times. */
327 for (i = 0; i < 2; i++)
329 u32 bi = i ? bi1 : bi0;
330 vlib_buffer_t *b = i ? b1 : b0;
332 n_buffers = slow_path (vm, bi, b,
333 n_left_to_tx, to_tx, &n_slow_bytes);
335 /* Not enough room for single packet? */
341 n_left_to_tx -= n_buffers;
342 incr_output_stats (vnm, cpu_index, n_slow_bytes,
343 vnet_buffer (b)->sw_if_index[VLIB_TX],
344 &last_sw_if_index, &n_packets, &n_bytes);
349 incr_output_stats (vnm, cpu_index,
350 vlib_buffer_length_in_chain (vm, b0),
351 vnet_buffer (b0)->sw_if_index[VLIB_TX],
352 &last_sw_if_index, &n_packets, &n_bytes);
353 incr_output_stats (vnm, cpu_index,
354 vlib_buffer_length_in_chain (vm, b0),
355 vnet_buffer (b1)->sw_if_index[VLIB_TX],
356 &last_sw_if_index, &n_packets, &n_bytes);
360 while (from + 1 <= from_end && n_left_to_tx >= 1)
371 b0 = vlib_get_buffer (vm, bi0);
373 /* Be grumpy about zero length buffers for benefit of
374 driver tx function. */
375 ASSERT (b0->current_length > 0);
377 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_NEXT_PRESENT))
379 u32 n_buffers, n_slow_bytes;
386 n_buffers = slow_path (vm, bi0, b0,
387 n_left_to_tx, to_tx, &n_slow_bytes);
389 /* Not enough room for single packet? */
395 n_left_to_tx -= n_buffers;
397 incr_output_stats (vnm, cpu_index,
398 vlib_buffer_length_in_chain (vm, b0),
399 vnet_buffer (b0)->sw_if_index[VLIB_TX],
400 &last_sw_if_index, &n_packets, &n_bytes);
404 vlib_put_next_frame (vm, node, VNET_INTERFACE_OUTPUT_NEXT_TX,
408 /* Final update of interface stats. */
409 incr_output_stats (vnm, cpu_index, 0, ~0, /* ~0 will flush stats */
410 &last_sw_if_index, &n_packets, &n_bytes);
415 VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node);
416 CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node);
419 vnet_interface_output_node_no_flatten (vlib_main_t * vm,
420 vlib_node_runtime_t * node,
421 vlib_frame_t * frame)
423 vnet_main_t *vnm = vnet_get_main ();
424 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
425 vnet_sw_interface_t *si;
426 vnet_hw_interface_t *hi;
427 u32 n_left_to_tx, *from, *from_end, *to_tx;
428 u32 n_bytes, n_buffers, n_packets;
429 u32 n_bytes_b0, n_bytes_b1;
430 u32 cpu_index = vm->cpu_index;
431 vnet_interface_main_t *im = &vnm->interface_main;
432 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
434 n_buffers = frame->n_vectors;
436 if (node->flags & VLIB_NODE_FLAG_TRACE)
437 vnet_interface_output_trace (vm, node, frame, n_buffers);
439 from = vlib_frame_args (frame);
442 return vlib_error_drop_buffers (vm, node, from,
443 /* buffer stride */ 1,
445 VNET_INTERFACE_OUTPUT_NEXT_DROP,
447 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
449 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
450 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
451 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
452 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
454 vlib_simple_counter_main_t *cm;
456 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
457 VNET_INTERFACE_COUNTER_TX_ERROR);
458 vlib_increment_simple_counter (cm, cpu_index,
459 rt->sw_if_index, n_buffers);
461 return vlib_error_drop_buffers (vm, node, from,
462 /* buffer stride */ 1,
464 VNET_INTERFACE_OUTPUT_NEXT_DROP,
466 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
469 from_end = from + n_buffers;
471 /* Total byte count of all buffers. */
475 while (from < from_end)
477 /* Get new next frame since previous incomplete frame may have less
478 than VNET_FRAME_SIZE vectors in it. */
479 vlib_get_new_next_frame (vm, node, next_index, to_tx, n_left_to_tx);
481 while (from + 4 <= from_end && n_left_to_tx >= 2)
484 vlib_buffer_t *b0, *b1;
485 u32 tx_swif0, tx_swif1;
487 /* Prefetch next iteration. */
488 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
489 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
499 b0 = vlib_get_buffer (vm, bi0);
500 b1 = vlib_get_buffer (vm, bi1);
502 /* Be grumpy about zero length buffers for benefit of
503 driver tx function. */
504 ASSERT (b0->current_length > 0);
505 ASSERT (b1->current_length > 0);
507 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
508 n_bytes_b1 = vlib_buffer_length_in_chain (vm, b1);
509 tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
510 tx_swif1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
512 n_bytes += n_bytes_b0 + n_bytes_b1;
515 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
517 /* update vlan subif tx counts, if required */
518 vlib_increment_combined_counter (im->combined_sw_if_counters +
519 VNET_INTERFACE_COUNTER_TX,
520 cpu_index, tx_swif0, 1,
524 /* update vlan subif tx counts, if required */
525 if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index))
528 vlib_increment_combined_counter (im->combined_sw_if_counters +
529 VNET_INTERFACE_COUNTER_TX,
530 cpu_index, tx_swif1, 1,
535 while (from + 1 <= from_end && n_left_to_tx >= 1)
547 b0 = vlib_get_buffer (vm, bi0);
549 /* Be grumpy about zero length buffers for benefit of
550 driver tx function. */
551 ASSERT (b0->current_length > 0);
553 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
554 tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
555 n_bytes += n_bytes_b0;
558 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 cpu_index, tx_swif0, 1,
568 vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
571 /* Update main interface stats. */
572 vlib_increment_combined_counter (im->combined_sw_if_counters
573 + VNET_INTERFACE_COUNTER_TX,
575 rt->sw_if_index, n_packets, n_bytes);
579 VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node_no_flatten);
580 CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node_no_flatten);
582 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
584 vnet_per_buffer_interface_output (vlib_main_t * vm,
585 vlib_node_runtime_t * node,
586 vlib_frame_t * frame)
588 vnet_main_t *vnm = vnet_get_main ();
589 u32 n_left_to_next, *from, *to_next;
590 u32 n_left_from, next_index;
592 n_left_from = frame->n_vectors;
594 from = vlib_frame_args (frame);
595 next_index = node->cached_next_index;
597 while (n_left_from > 0)
599 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
601 while (n_left_from >= 4 && n_left_to_next >= 2)
603 u32 bi0, bi1, next0, next1;
604 vlib_buffer_t *b0, *b1;
605 vnet_hw_interface_t *hi0, *hi1;
607 /* Prefetch next iteration. */
608 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
609 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
620 b0 = vlib_get_buffer (vm, bi0);
621 b1 = vlib_get_buffer (vm, bi1);
624 vnet_get_sup_hw_interface (vnm,
625 vnet_buffer (b0)->sw_if_index
628 vnet_get_sup_hw_interface (vnm,
629 vnet_buffer (b1)->sw_if_index
632 next0 = hi0->hw_if_index;
633 next1 = hi1->hw_if_index;
635 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
636 n_left_to_next, bi0, bi1, next0,
640 while (n_left_from > 0 && n_left_to_next > 0)
644 vnet_hw_interface_t *hi0;
653 b0 = vlib_get_buffer (vm, bi0);
656 vnet_get_sup_hw_interface (vnm,
657 vnet_buffer (b0)->sw_if_index
660 next0 = hi0->hw_if_index;
662 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
663 n_left_to_next, bi0, next0);
666 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
669 return frame->n_vectors;
673 counter_index (vlib_main_t * vm, vlib_error_t e)
678 ni = vlib_error_get_node (e);
679 n = vlib_get_node (vm, ni);
681 ci = vlib_error_get_code (e);
682 ASSERT (ci < n->n_errors);
684 ci += n->error_heap_index;
690 format_vnet_error_trace (u8 * s, va_list * va)
692 vlib_main_t *vm = va_arg (*va, vlib_main_t *);
693 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
694 vlib_error_t *e = va_arg (*va, vlib_error_t *);
695 vlib_node_t *error_node;
696 vlib_error_main_t *em = &vm->error_main;
699 error_node = vlib_get_node (vm, vlib_error_get_node (e[0]));
700 i = counter_index (vm, e[0]);
701 s = format (s, "%v: %s", error_node->name, em->error_strings_heap[i]);
707 trace_errors_with_buffers (vlib_main_t * vm,
708 vlib_node_runtime_t * node, vlib_frame_t * frame)
710 u32 n_left, *buffers;
712 buffers = vlib_frame_vector_args (frame);
713 n_left = frame->n_vectors;
718 vlib_buffer_t *b0, *b1;
719 vlib_error_t *t0, *t1;
721 /* Prefetch next iteration. */
722 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
723 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
728 b0 = vlib_get_buffer (vm, bi0);
729 b1 = vlib_get_buffer (vm, bi1);
731 if (b0->flags & VLIB_BUFFER_IS_TRACED)
733 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
736 if (b1->flags & VLIB_BUFFER_IS_TRACED)
738 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
753 b0 = vlib_get_buffer (vm, bi0);
755 if (b0->flags & VLIB_BUFFER_IS_TRACED)
757 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
766 validate_error (vlib_main_t * vm, vlib_error_t * e, u32 index)
768 uword node_index = vlib_error_get_node (e[0]);
769 uword code = vlib_error_get_code (e[0]);
772 if (node_index >= vec_len (vm->node_main.nodes))
773 return format (0, "[%d], node index out of range 0x%x, error 0x%x",
774 index, node_index, e[0]);
776 n = vlib_get_node (vm, node_index);
777 if (code >= n->n_errors)
778 return format (0, "[%d], code %d out of range for node %v",
779 index, code, n->name);
785 validate_error_frame (vlib_main_t * vm,
786 vlib_node_runtime_t * node, vlib_frame_t * f)
788 u32 *buffers = vlib_frame_args (f);
793 for (i = 0; i < f->n_vectors; i++)
795 b = vlib_get_buffer (vm, buffers[i]);
796 msg = validate_error (vm, &b->error, i);
806 VNET_ERROR_DISPOSITION_DROP,
807 VNET_ERROR_DISPOSITION_PUNT,
808 VNET_ERROR_N_DISPOSITION,
809 } vnet_error_disposition_t;
812 do_packet (vlib_main_t * vm, vlib_error_t a)
814 vlib_error_main_t *em = &vm->error_main;
815 u32 i = counter_index (vm, a);
816 em->counters[i] += 1;
817 vlib_error_elog_count (vm, i, 1);
820 static_always_inline uword
821 process_drop_punt (vlib_main_t * vm,
822 vlib_node_runtime_t * node,
823 vlib_frame_t * frame, vnet_error_disposition_t disposition)
825 vnet_main_t *vnm = vnet_get_main ();
826 vlib_error_main_t *em = &vm->error_main;
827 u32 *buffers, *first_buffer;
828 vlib_error_t current_error;
829 u32 current_counter_index, n_errors_left;
830 u32 current_sw_if_index, n_errors_current_sw_if_index;
832 vlib_simple_counter_main_t *cm;
833 u32 cpu_index = vm->cpu_index;
835 static vlib_error_t memory[VNET_ERROR_N_DISPOSITION];
836 static char memory_init[VNET_ERROR_N_DISPOSITION];
838 buffers = vlib_frame_args (frame);
839 first_buffer = buffers;
842 vlib_buffer_t *b = vlib_get_buffer (vm, first_buffer[0]);
844 if (!memory_init[disposition])
846 memory_init[disposition] = 1;
847 memory[disposition] = b->error;
850 current_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
851 n_errors_current_sw_if_index = 0;
854 current_error = memory[disposition];
855 current_counter_index = counter_index (vm, memory[disposition]);
856 current_counter = em->counters[current_counter_index];
858 if (node->flags & VLIB_NODE_FLAG_TRACE)
859 trace_errors_with_buffers (vm, node, frame);
861 n_errors_left = frame->n_vectors;
862 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
863 (disposition == VNET_ERROR_DISPOSITION_PUNT
864 ? VNET_INTERFACE_COUNTER_PUNT
865 : VNET_INTERFACE_COUNTER_DROP));
867 while (n_errors_left >= 2)
869 vlib_buffer_t *b0, *b1;
870 vnet_sw_interface_t *sw_if0, *sw_if1;
873 u32 sw_if_index0, sw_if_index1;
881 b0 = vlib_get_buffer (vm, bi0);
882 b1 = vlib_get_buffer (vm, bi1);
887 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
888 sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
890 /* Speculate that sw_if_index == sw_if_index[01]. */
891 n_errors_current_sw_if_index += 2;
893 /* Speculatively assume all 2 (node, code) pairs are equal
894 to current (node, code). */
895 current_counter += 2;
897 if (PREDICT_FALSE (e0 != current_error
898 || e1 != current_error
899 || sw_if_index0 != current_sw_if_index
900 || sw_if_index1 != current_sw_if_index))
902 current_counter -= 2;
903 n_errors_current_sw_if_index -= 2;
905 vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1);
906 vlib_increment_simple_counter (cm, cpu_index, sw_if_index1, 1);
908 /* Increment super-interface drop/punt counters for
910 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
911 vlib_increment_simple_counter
912 (cm, cpu_index, sw_if0->sup_sw_if_index,
913 sw_if0->sup_sw_if_index != sw_if_index0);
915 sw_if1 = vnet_get_sw_interface (vnm, sw_if_index1);
916 vlib_increment_simple_counter
917 (cm, cpu_index, sw_if1->sup_sw_if_index,
918 sw_if1->sup_sw_if_index != sw_if_index1);
920 em->counters[current_counter_index] = current_counter;
924 /* For 2 repeated errors, change current error. */
925 if (e0 == e1 && e1 != current_error)
928 current_counter_index = counter_index (vm, e0);
930 current_counter = em->counters[current_counter_index];
934 while (n_errors_left >= 1)
937 vnet_sw_interface_t *sw_if0;
939 u32 bi0, sw_if_index0;
945 current_counter += 1;
947 b0 = vlib_get_buffer (vm, bi0);
950 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
952 /* Increment drop/punt counters. */
953 vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1);
955 /* Increment super-interface drop/punt counters for sub-interfaces. */
956 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
957 vlib_increment_simple_counter (cm, cpu_index, sw_if0->sup_sw_if_index,
958 sw_if0->sup_sw_if_index != sw_if_index0);
960 if (PREDICT_FALSE (e0 != current_error))
962 current_counter -= 1;
964 vlib_error_elog_count (vm, current_counter_index,
966 - em->counters[current_counter_index]));
968 em->counters[current_counter_index] = current_counter;
972 current_counter_index = counter_index (vm, e0);
973 current_counter = em->counters[current_counter_index];
977 if (n_errors_current_sw_if_index > 0)
979 vnet_sw_interface_t *si;
981 vlib_increment_simple_counter (cm, cpu_index, current_sw_if_index,
982 n_errors_current_sw_if_index);
984 si = vnet_get_sw_interface (vnm, current_sw_if_index);
985 if (si->sup_sw_if_index != current_sw_if_index)
986 vlib_increment_simple_counter (cm, cpu_index, si->sup_sw_if_index,
987 n_errors_current_sw_if_index);
990 vlib_error_elog_count (vm, current_counter_index,
992 - em->counters[current_counter_index]));
994 /* Return cached counter. */
995 em->counters[current_counter_index] = current_counter;
997 /* Save memory for next iteration. */
998 memory[disposition] = current_error;
1000 if (disposition == VNET_ERROR_DISPOSITION_DROP || !vm->os_punt_frame)
1002 vlib_buffer_free (vm, first_buffer, frame->n_vectors);
1004 /* If there is no punt function, free the frame as well. */
1005 if (disposition == VNET_ERROR_DISPOSITION_PUNT && !vm->os_punt_frame)
1006 vlib_frame_free (vm, node, frame);
1009 vm->os_punt_frame (vm, node, frame);
1011 return frame->n_vectors;
1015 pcap_drop_trace (vlib_main_t * vm,
1016 vnet_interface_main_t * im, vlib_frame_t * f)
1019 u32 n_left = f->n_vectors;
1020 vlib_buffer_t *b0, *p1;
1022 i16 save_current_data;
1023 u16 save_current_length;
1025 from = vlib_frame_vector_args (f);
1029 if (PREDICT_TRUE (n_left > 1))
1031 p1 = vlib_get_buffer (vm, from[1]);
1032 vlib_prefetch_buffer_header (p1, LOAD);
1036 b0 = vlib_get_buffer (vm, bi0);
1040 /* See if we're pointedly ignoring this specific error */
1041 if (im->pcap_drop_filter_hash
1042 && hash_get (im->pcap_drop_filter_hash, b0->error))
1045 /* Trace all drops, or drops received on a specific interface */
1046 if (im->pcap_sw_if_index == 0 ||
1047 im->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX])
1049 save_current_data = b0->current_data;
1050 save_current_length = b0->current_length;
1053 * Typically, we'll need to rewind the buffer
1055 if (b0->current_data > 0)
1056 vlib_buffer_advance (b0, (word) - b0->current_data);
1058 pcap_add_buffer (&im->pcap_main, vm, bi0, 512);
1060 b0->current_data = save_current_data;
1061 b0->current_length = save_current_length;
1067 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
1069 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
1071 if (im->pcap_drop_filter_hash == 0)
1072 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
1075 hash_set (im->pcap_drop_filter_hash, error_index, 1);
1077 hash_unset (im->pcap_drop_filter_hash, error_index);
1081 process_drop (vlib_main_t * vm,
1082 vlib_node_runtime_t * node, vlib_frame_t * frame)
1084 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
1086 if (PREDICT_FALSE (im->drop_pcap_enable))
1087 pcap_drop_trace (vm, im, frame);
1089 return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
1093 process_punt (vlib_main_t * vm,
1094 vlib_node_runtime_t * node, vlib_frame_t * frame)
1096 return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
1100 VLIB_REGISTER_NODE (drop_buffers,static) = {
1101 .function = process_drop,
1102 .name = "error-drop",
1103 .flags = VLIB_NODE_FLAG_IS_DROP,
1104 .vector_size = sizeof (u32),
1105 .format_trace = format_vnet_error_trace,
1106 .validate_frame = validate_error_frame,
1110 VLIB_NODE_FUNCTION_MULTIARCH (drop_buffers, process_drop);
1113 VLIB_REGISTER_NODE (punt_buffers,static) = {
1114 .function = process_punt,
1115 .flags = (VLIB_NODE_FLAG_FRAME_NO_FREE_AFTER_DISPATCH
1116 | VLIB_NODE_FLAG_IS_PUNT),
1117 .name = "error-punt",
1118 .vector_size = sizeof (u32),
1119 .format_trace = format_vnet_error_trace,
1120 .validate_frame = validate_error_frame,
1124 VLIB_NODE_FUNCTION_MULTIARCH (punt_buffers, process_punt);
1127 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node,static) = {
1128 .function = vnet_per_buffer_interface_output,
1129 .name = "interface-output",
1130 .vector_size = sizeof (u32),
1134 VLIB_NODE_FUNCTION_MULTIARCH (vnet_per_buffer_interface_output_node,
1135 vnet_per_buffer_interface_output);
1138 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1142 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1145 next_index = vlib_node_add_next_with_slot
1146 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1147 hi->output_node_index,
1148 /* next_index */ hw_if_index);
1150 ASSERT (next_index == hw_if_index);
1155 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1156 (vnet_per_buffer_interface_output_hw_interface_add_del);
1158 static clib_error_t *
1159 pcap_drop_trace_command_fn (vlib_main_t * vm,
1160 unformat_input_t * input,
1161 vlib_cli_command_t * cmd)
1163 vnet_main_t *vnm = vnet_get_main ();
1164 vnet_interface_main_t *im = &vnm->interface_main;
1168 clib_error_t *error = 0;
1170 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1172 if (unformat (input, "on"))
1174 if (im->drop_pcap_enable == 0)
1176 if (im->pcap_filename == 0)
1177 im->pcap_filename = format (0, "/tmp/drop.pcap%c", 0);
1179 memset (&im->pcap_main, 0, sizeof (im->pcap_main));
1180 im->pcap_main.file_name = (char *) im->pcap_filename;
1181 im->pcap_main.n_packets_to_capture = 100;
1182 if (im->pcap_pkts_to_capture)
1183 im->pcap_main.n_packets_to_capture = im->pcap_pkts_to_capture;
1185 im->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
1186 im->drop_pcap_enable = 1;
1188 vlib_cli_output (vm, "pcap drop capture on...");
1192 vlib_cli_output (vm, "pcap drop capture already on...");
1196 else if (unformat (input, "off"))
1200 if (im->drop_pcap_enable)
1202 vlib_cli_output (vm, "captured %d pkts...",
1203 im->pcap_main.n_packets_captured);
1204 if (im->pcap_main.n_packets_captured)
1206 im->pcap_main.n_packets_to_capture =
1207 im->pcap_main.n_packets_captured;
1208 error = pcap_write (&im->pcap_main);
1210 clib_error_report (error);
1212 vlib_cli_output (vm, "saved to %s...", im->pcap_filename);
1217 vlib_cli_output (vm, "pcap drop capture already off...");
1220 im->drop_pcap_enable = 0;
1222 else if (unformat (input, "max %d", &max))
1224 im->pcap_pkts_to_capture = max;
1228 else if (unformat (input, "intfc %U",
1229 unformat_vnet_sw_interface, vnm,
1230 &im->pcap_sw_if_index))
1232 else if (unformat (input, "intfc any"))
1234 im->pcap_sw_if_index = 0;
1237 else if (unformat (input, "file %s", &filename))
1239 u8 *chroot_filename;
1240 /* Brain-police user path input */
1241 if (strstr ((char *) filename, "..")
1242 || index ((char *) filename, '/'))
1244 vlib_cli_output (vm, "illegal characters in filename '%s'",
1249 chroot_filename = format (0, "/tmp/%s%c", filename, 0);
1250 vec_free (filename);
1252 if (im->pcap_filename)
1253 vec_free (im->pcap_filename);
1254 vec_add1 (filename, 0);
1255 im->pcap_filename = chroot_filename;
1258 else if (unformat (input, "status"))
1260 if (im->drop_pcap_enable == 0)
1262 vlib_cli_output (vm, "pcap drop capture is off...");
1266 vlib_cli_output (vm, "pcap drop capture: %d of %d pkts...",
1267 im->pcap_main.n_packets_captured,
1268 im->pcap_main.n_packets_to_capture);
1277 return clib_error_return (0, "unknown input `%U'",
1278 format_unformat_error, input);
1284 VLIB_CLI_COMMAND (pcap_trace_command, static) = {
1285 .path = "pcap drop trace",
1287 "pcap drop trace on off max <nn> intfc <intfc> file <name> status",
1288 .function = pcap_drop_trace_command_fn,
1293 * fd.io coding-style-patch-verification: ON
1296 * eval: (c-set-style "gnu")