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/ip/icmp46_packet.h>
42 #include <vnet/ip/ip4.h>
43 #include <vnet/ip/ip6.h>
44 #include <vnet/udp/udp_packet.h>
45 #include <vnet/feature/feature.h>
50 u8 data[128 - sizeof (u32)];
52 interface_output_trace_t;
55 format_vnet_interface_output_trace (u8 * s, va_list * va)
57 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
58 vlib_node_t *node = va_arg (*va, vlib_node_t *);
59 interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
60 vnet_main_t *vnm = vnet_get_main ();
61 vnet_sw_interface_t *si;
64 if (t->sw_if_index != (u32) ~ 0)
66 indent = format_get_indent (s);
68 if (pool_is_free_index
69 (vnm->interface_main.sw_interfaces, t->sw_if_index))
71 /* the interface may have been deleted by the time the trace is printed */
72 s = format (s, "sw_if_index: %d\n%U%U",
74 format_white_space, indent,
75 node->format_buffer ? node->
76 format_buffer : format_hex_bytes, t->data,
81 si = vnet_get_sw_interface (vnm, t->sw_if_index);
83 s = format (s, "%U\n%U%U",
84 format_vnet_sw_interface_name, vnm, si,
85 format_white_space, indent,
86 node->format_buffer ? node->
87 format_buffer : format_hex_bytes, t->data,
95 vnet_interface_output_trace (vlib_main_t * vm,
96 vlib_node_runtime_t * node,
97 vlib_frame_t * frame, uword n_buffers)
102 from = vlib_frame_vector_args (frame);
107 vlib_buffer_t *b0, *b1;
108 interface_output_trace_t *t0, *t1;
110 /* Prefetch next iteration. */
111 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
112 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
117 b0 = vlib_get_buffer (vm, bi0);
118 b1 = vlib_get_buffer (vm, bi1);
120 if (b0->flags & VLIB_BUFFER_IS_TRACED)
122 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
123 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
124 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
127 if (b1->flags & VLIB_BUFFER_IS_TRACED)
129 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
130 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
131 clib_memcpy_fast (t1->data, vlib_buffer_get_current (b1),
142 interface_output_trace_t *t0;
146 b0 = vlib_get_buffer (vm, bi0);
148 if (b0->flags & VLIB_BUFFER_IS_TRACED)
150 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
151 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
152 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
160 static_always_inline void
161 calc_checksums (vlib_main_t * vm, vlib_buffer_t * b)
168 int is_ip4 = (b->flags & VNET_BUFFER_F_IS_IP4) != 0;
169 int is_ip6 = (b->flags & VNET_BUFFER_F_IS_IP6) != 0;
171 ASSERT (!(is_ip4 && is_ip6));
173 ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
174 ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
175 th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
176 uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
180 ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
181 if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
182 ip4->checksum = ip4_header_checksum (ip4);
183 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
186 th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
188 if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
189 uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
194 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
195 th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
196 if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
197 uh->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
200 b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
201 b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
202 b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
205 static_always_inline uword
206 vnet_interface_output_node_inline (vlib_main_t * vm,
207 vlib_node_runtime_t * node,
208 vlib_frame_t * frame, vnet_main_t * vnm,
209 vnet_hw_interface_t * hi,
212 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
213 vnet_sw_interface_t *si;
214 u32 n_left_to_tx, *from, *from_end, *to_tx;
215 u32 n_bytes, n_buffers, n_packets;
216 u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3;
217 u32 thread_index = vm->thread_index;
218 vnet_interface_main_t *im = &vnm->interface_main;
219 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
220 u32 current_config_index = ~0;
221 u8 arc = im->output_feature_arc_index;
223 n_buffers = frame->n_vectors;
225 if (node->flags & VLIB_NODE_FLAG_TRACE)
226 vnet_interface_output_trace (vm, node, frame, n_buffers);
228 from = vlib_frame_vector_args (frame);
231 return vlib_error_drop_buffers (vm, node, from,
232 /* buffer stride */ 1,
234 VNET_INTERFACE_OUTPUT_NEXT_DROP,
236 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
238 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
239 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
240 if (!(si->flags & (VNET_SW_INTERFACE_FLAG_ADMIN_UP |
241 VNET_SW_INTERFACE_FLAG_BOND_SLAVE)) ||
242 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
244 vlib_simple_counter_main_t *cm;
246 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
247 VNET_INTERFACE_COUNTER_TX_ERROR);
248 vlib_increment_simple_counter (cm, thread_index,
249 rt->sw_if_index, n_buffers);
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_DOWN);
259 from_end = from + n_buffers;
261 /* Total byte count of all buffers. */
265 /* interface-output feature arc handling */
266 if (PREDICT_FALSE (vnet_have_features (arc, rt->sw_if_index)))
268 vnet_feature_config_main_t *fcm;
269 fcm = vnet_feature_get_config_main (arc);
270 current_config_index = vnet_get_feature_config_index (arc,
272 vnet_get_config_data (&fcm->config_main, ¤t_config_index,
276 while (from < from_end)
278 /* Get new next frame since previous incomplete frame may have less
279 than VNET_FRAME_SIZE vectors in it. */
280 vlib_get_new_next_frame (vm, node, next_index, to_tx, n_left_to_tx);
282 while (from + 8 <= from_end && n_left_to_tx >= 4)
284 u32 bi0, bi1, bi2, bi3;
285 vlib_buffer_t *b0, *b1, *b2, *b3;
286 u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
289 /* Prefetch next iteration. */
290 vlib_prefetch_buffer_with_index (vm, from[4], LOAD);
291 vlib_prefetch_buffer_with_index (vm, from[5], LOAD);
292 vlib_prefetch_buffer_with_index (vm, from[6], LOAD);
293 vlib_prefetch_buffer_with_index (vm, from[7], LOAD);
307 b0 = vlib_get_buffer (vm, bi0);
308 b1 = vlib_get_buffer (vm, bi1);
309 b2 = vlib_get_buffer (vm, bi2);
310 b3 = vlib_get_buffer (vm, bi3);
312 /* Be grumpy about zero length buffers for benefit of
313 driver tx function. */
314 ASSERT (b0->current_length > 0);
315 ASSERT (b1->current_length > 0);
316 ASSERT (b2->current_length > 0);
317 ASSERT (b3->current_length > 0);
319 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
320 n_bytes_b1 = vlib_buffer_length_in_chain (vm, b1);
321 n_bytes_b2 = vlib_buffer_length_in_chain (vm, b2);
322 n_bytes_b3 = vlib_buffer_length_in_chain (vm, b3);
323 tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
324 tx_swif1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
325 tx_swif2 = vnet_buffer (b2)->sw_if_index[VLIB_TX];
326 tx_swif3 = vnet_buffer (b3)->sw_if_index[VLIB_TX];
328 n_bytes += n_bytes_b0 + n_bytes_b1;
329 n_bytes += n_bytes_b2 + n_bytes_b3;
332 if (PREDICT_FALSE (current_config_index != ~0))
334 vnet_buffer (b0)->feature_arc_index = arc;
335 vnet_buffer (b1)->feature_arc_index = arc;
336 vnet_buffer (b2)->feature_arc_index = arc;
337 vnet_buffer (b3)->feature_arc_index = arc;
338 b0->current_config_index = current_config_index;
339 b1->current_config_index = current_config_index;
340 b2->current_config_index = current_config_index;
341 b3->current_config_index = current_config_index;
344 /* update vlan subif tx counts, if required */
345 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
347 vlib_increment_combined_counter (im->combined_sw_if_counters +
348 VNET_INTERFACE_COUNTER_TX,
349 thread_index, tx_swif0, 1,
353 if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index))
356 vlib_increment_combined_counter (im->combined_sw_if_counters +
357 VNET_INTERFACE_COUNTER_TX,
358 thread_index, tx_swif1, 1,
362 if (PREDICT_FALSE (tx_swif2 != rt->sw_if_index))
365 vlib_increment_combined_counter (im->combined_sw_if_counters +
366 VNET_INTERFACE_COUNTER_TX,
367 thread_index, tx_swif2, 1,
370 if (PREDICT_FALSE (tx_swif3 != rt->sw_if_index))
373 vlib_increment_combined_counter (im->combined_sw_if_counters +
374 VNET_INTERFACE_COUNTER_TX,
375 thread_index, tx_swif3, 1,
379 or_flags = b0->flags | b1->flags | b2->flags | b3->flags;
384 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
385 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
386 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
388 calc_checksums (vm, b0);
389 calc_checksums (vm, b1);
390 calc_checksums (vm, b2);
391 calc_checksums (vm, b3);
396 while (from + 1 <= from_end && n_left_to_tx >= 1)
408 b0 = vlib_get_buffer (vm, bi0);
410 /* Be grumpy about zero length buffers for benefit of
411 driver tx function. */
412 ASSERT (b0->current_length > 0);
414 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
415 tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
416 n_bytes += n_bytes_b0;
419 if (PREDICT_FALSE (current_config_index != ~0))
421 vnet_buffer (b0)->feature_arc_index = arc;
422 b0->current_config_index = current_config_index;
425 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
428 vlib_increment_combined_counter (im->combined_sw_if_counters +
429 VNET_INTERFACE_COUNTER_TX,
430 thread_index, tx_swif0, 1,
435 calc_checksums (vm, b0);
438 vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
441 /* Update main interface stats. */
442 vlib_increment_combined_counter (im->combined_sw_if_counters
443 + VNET_INTERFACE_COUNTER_TX,
445 rt->sw_if_index, n_packets, n_bytes);
450 vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node,
451 vlib_frame_t * frame)
453 vnet_main_t *vnm = vnet_get_main ();
454 vnet_hw_interface_t *hi;
455 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
456 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
458 if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
459 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
460 /* do_tx_offloads */ 0);
462 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
463 /* do_tx_offloads */ 1);
466 VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node);
467 CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node);
469 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
471 vnet_per_buffer_interface_output (vlib_main_t * vm,
472 vlib_node_runtime_t * node,
473 vlib_frame_t * frame)
475 vnet_main_t *vnm = vnet_get_main ();
476 u32 n_left_to_next, *from, *to_next;
477 u32 n_left_from, next_index;
479 n_left_from = frame->n_vectors;
481 from = vlib_frame_vector_args (frame);
482 next_index = node->cached_next_index;
484 while (n_left_from > 0)
486 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
488 while (n_left_from >= 4 && n_left_to_next >= 2)
490 u32 bi0, bi1, next0, next1;
491 vlib_buffer_t *b0, *b1;
492 vnet_hw_interface_t *hi0, *hi1;
494 /* Prefetch next iteration. */
495 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
496 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
507 b0 = vlib_get_buffer (vm, bi0);
508 b1 = vlib_get_buffer (vm, bi1);
511 vnet_get_sup_hw_interface (vnm,
512 vnet_buffer (b0)->sw_if_index
515 vnet_get_sup_hw_interface (vnm,
516 vnet_buffer (b1)->sw_if_index
519 next0 = hi0->output_node_next_index;
520 next1 = hi1->output_node_next_index;
522 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
523 n_left_to_next, bi0, bi1, next0,
527 while (n_left_from > 0 && n_left_to_next > 0)
531 vnet_hw_interface_t *hi0;
540 b0 = vlib_get_buffer (vm, bi0);
543 vnet_get_sup_hw_interface (vnm,
544 vnet_buffer (b0)->sw_if_index
547 next0 = hi0->output_node_next_index;
549 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
550 n_left_to_next, bi0, next0);
553 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
556 return frame->n_vectors;
560 counter_index (vlib_main_t * vm, vlib_error_t e)
565 ni = vlib_error_get_node (e);
566 n = vlib_get_node (vm, ni);
568 ci = vlib_error_get_code (e);
569 ASSERT (ci < n->n_errors);
571 ci += n->error_heap_index;
577 format_vnet_error_trace (u8 * s, va_list * va)
579 vlib_main_t *vm = va_arg (*va, vlib_main_t *);
580 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
581 vlib_error_t *e = va_arg (*va, vlib_error_t *);
582 vlib_node_t *error_node;
583 vlib_error_main_t *em = &vm->error_main;
586 error_node = vlib_get_node (vm, vlib_error_get_node (e[0]));
587 i = counter_index (vm, e[0]);
588 s = format (s, "%v: %s", error_node->name, em->error_strings_heap[i]);
594 trace_errors_with_buffers (vlib_main_t * vm,
595 vlib_node_runtime_t * node, vlib_frame_t * frame)
597 u32 n_left, *buffers;
599 buffers = vlib_frame_vector_args (frame);
600 n_left = frame->n_vectors;
605 vlib_buffer_t *b0, *b1;
606 vlib_error_t *t0, *t1;
608 /* Prefetch next iteration. */
609 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
610 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
615 b0 = vlib_get_buffer (vm, bi0);
616 b1 = vlib_get_buffer (vm, bi1);
618 if (b0->flags & VLIB_BUFFER_IS_TRACED)
620 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
623 if (b1->flags & VLIB_BUFFER_IS_TRACED)
625 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
640 b0 = vlib_get_buffer (vm, bi0);
642 if (b0->flags & VLIB_BUFFER_IS_TRACED)
644 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
653 validate_error (vlib_main_t * vm, vlib_error_t * e, u32 index)
655 uword node_index = vlib_error_get_node (e[0]);
656 uword code = vlib_error_get_code (e[0]);
659 if (node_index >= vec_len (vm->node_main.nodes))
660 return format (0, "[%d], node index out of range 0x%x, error 0x%x",
661 index, node_index, e[0]);
663 n = vlib_get_node (vm, node_index);
664 if (code >= n->n_errors)
665 return format (0, "[%d], code %d out of range for node %v",
666 index, code, n->name);
672 validate_error_frame (vlib_main_t * vm,
673 vlib_node_runtime_t * node, vlib_frame_t * f)
675 u32 *buffers = vlib_frame_vector_args (f);
680 for (i = 0; i < f->n_vectors; i++)
682 b = vlib_get_buffer (vm, buffers[i]);
683 msg = validate_error (vm, &b->error, i);
693 VNET_ERROR_DISPOSITION_DROP,
694 VNET_ERROR_DISPOSITION_PUNT,
695 VNET_ERROR_N_DISPOSITION,
696 } vnet_error_disposition_t;
699 do_packet (vlib_main_t * vm, vlib_error_t a)
701 vlib_error_main_t *em = &vm->error_main;
702 u32 i = counter_index (vm, a);
703 em->counters[i] += 1;
704 vlib_error_elog_count (vm, i, 1);
707 static_always_inline uword
708 process_drop_punt (vlib_main_t * vm,
709 vlib_node_runtime_t * node,
710 vlib_frame_t * frame, vnet_error_disposition_t disposition)
712 vnet_main_t *vnm = vnet_get_main ();
713 vlib_error_main_t *em = &vm->error_main;
714 u32 *buffers, *first_buffer;
715 vlib_error_t current_error;
716 u32 current_counter_index, n_errors_left;
717 u32 current_sw_if_index, n_errors_current_sw_if_index;
719 vlib_simple_counter_main_t *cm;
720 u32 thread_index = vm->thread_index;
722 static vlib_error_t memory[VNET_ERROR_N_DISPOSITION];
723 static char memory_init[VNET_ERROR_N_DISPOSITION];
725 buffers = vlib_frame_vector_args (frame);
726 first_buffer = buffers;
729 vlib_buffer_t *b = vlib_get_buffer (vm, first_buffer[0]);
731 if (!memory_init[disposition])
733 memory_init[disposition] = 1;
734 memory[disposition] = b->error;
737 current_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
738 n_errors_current_sw_if_index = 0;
741 current_error = memory[disposition];
742 current_counter_index = counter_index (vm, memory[disposition]);
743 current_counter = em->counters[current_counter_index];
745 if (node->flags & VLIB_NODE_FLAG_TRACE)
746 trace_errors_with_buffers (vm, node, frame);
748 n_errors_left = frame->n_vectors;
749 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
750 (disposition == VNET_ERROR_DISPOSITION_PUNT
751 ? VNET_INTERFACE_COUNTER_PUNT
752 : VNET_INTERFACE_COUNTER_DROP));
754 while (n_errors_left >= 2)
756 vlib_buffer_t *b0, *b1;
757 vnet_sw_interface_t *sw_if0, *sw_if1;
760 u32 sw_if_index0, sw_if_index1;
768 b0 = vlib_get_buffer (vm, bi0);
769 b1 = vlib_get_buffer (vm, bi1);
774 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
775 sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
777 /* Speculate that sw_if_index == sw_if_index[01]. */
778 n_errors_current_sw_if_index += 2;
780 /* Speculatively assume all 2 (node, code) pairs are equal
781 to current (node, code). */
782 current_counter += 2;
784 if (PREDICT_FALSE (e0 != current_error
785 || e1 != current_error
786 || sw_if_index0 != current_sw_if_index
787 || sw_if_index1 != current_sw_if_index))
789 current_counter -= 2;
790 n_errors_current_sw_if_index -= 2;
792 vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1);
793 vlib_increment_simple_counter (cm, thread_index, sw_if_index1, 1);
795 /* Increment super-interface drop/punt counters for
797 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
798 vlib_increment_simple_counter
799 (cm, thread_index, sw_if0->sup_sw_if_index,
800 sw_if0->sup_sw_if_index != sw_if_index0);
802 sw_if1 = vnet_get_sw_interface (vnm, sw_if_index1);
803 vlib_increment_simple_counter
804 (cm, thread_index, sw_if1->sup_sw_if_index,
805 sw_if1->sup_sw_if_index != sw_if_index1);
807 em->counters[current_counter_index] = current_counter;
811 /* For 2 repeated errors, change current error. */
812 if (e0 == e1 && e1 != current_error)
815 current_counter_index = counter_index (vm, e0);
817 current_counter = em->counters[current_counter_index];
821 while (n_errors_left >= 1)
824 vnet_sw_interface_t *sw_if0;
826 u32 bi0, sw_if_index0;
832 current_counter += 1;
834 b0 = vlib_get_buffer (vm, bi0);
837 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
839 /* Increment drop/punt counters. */
840 vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1);
842 /* Increment super-interface drop/punt counters for sub-interfaces. */
843 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
844 vlib_increment_simple_counter (cm, thread_index,
845 sw_if0->sup_sw_if_index,
846 sw_if0->sup_sw_if_index != sw_if_index0);
848 if (PREDICT_FALSE (e0 != current_error))
850 current_counter -= 1;
852 vlib_error_elog_count (vm, current_counter_index,
854 - em->counters[current_counter_index]));
856 em->counters[current_counter_index] = current_counter;
860 current_counter_index = counter_index (vm, e0);
861 current_counter = em->counters[current_counter_index];
865 if (n_errors_current_sw_if_index > 0)
867 vnet_sw_interface_t *si;
869 vlib_increment_simple_counter (cm, thread_index, current_sw_if_index,
870 n_errors_current_sw_if_index);
872 si = vnet_get_sw_interface (vnm, current_sw_if_index);
873 if (si->sup_sw_if_index != current_sw_if_index)
874 vlib_increment_simple_counter (cm, thread_index, si->sup_sw_if_index,
875 n_errors_current_sw_if_index);
878 vlib_error_elog_count (vm, current_counter_index,
880 - em->counters[current_counter_index]));
882 /* Return cached counter. */
883 em->counters[current_counter_index] = current_counter;
885 /* Save memory for next iteration. */
886 memory[disposition] = current_error;
888 if (disposition == VNET_ERROR_DISPOSITION_DROP || !vm->os_punt_frame)
890 vlib_buffer_free (vm, first_buffer, frame->n_vectors);
892 /* If there is no punt function, free the frame as well. */
893 if (disposition == VNET_ERROR_DISPOSITION_PUNT && !vm->os_punt_frame)
894 vlib_frame_free (vm, node, frame);
897 vm->os_punt_frame (vm, node, frame);
899 return frame->n_vectors;
903 pcap_drop_trace (vlib_main_t * vm,
904 vnet_interface_main_t * im, vlib_frame_t * f)
907 u32 n_left = f->n_vectors;
908 vlib_buffer_t *b0, *p1;
910 i16 save_current_data;
911 u16 save_current_length;
913 from = vlib_frame_vector_args (f);
917 if (PREDICT_TRUE (n_left > 1))
919 p1 = vlib_get_buffer (vm, from[1]);
920 vlib_prefetch_buffer_header (p1, LOAD);
924 b0 = vlib_get_buffer (vm, bi0);
928 /* See if we're pointedly ignoring this specific error */
929 if (im->pcap_drop_filter_hash
930 && hash_get (im->pcap_drop_filter_hash, b0->error))
933 /* Trace all drops, or drops received on a specific interface */
934 if (im->pcap_sw_if_index == 0 ||
935 im->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX])
937 save_current_data = b0->current_data;
938 save_current_length = b0->current_length;
941 * Typically, we'll need to rewind the buffer
943 if (b0->current_data > 0)
944 vlib_buffer_advance (b0, (word) - b0->current_data);
946 pcap_add_buffer (&im->pcap_main, vm, bi0, 512);
948 b0->current_data = save_current_data;
949 b0->current_length = save_current_length;
955 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
957 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
959 if (im->pcap_drop_filter_hash == 0)
960 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
963 hash_set (im->pcap_drop_filter_hash, error_index, 1);
965 hash_unset (im->pcap_drop_filter_hash, error_index);
969 process_drop (vlib_main_t * vm,
970 vlib_node_runtime_t * node, vlib_frame_t * frame)
972 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
974 if (PREDICT_FALSE (im->drop_pcap_enable))
975 pcap_drop_trace (vm, im, frame);
977 return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
981 process_punt (vlib_main_t * vm,
982 vlib_node_runtime_t * node, vlib_frame_t * frame)
984 return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
988 VLIB_REGISTER_NODE (drop_buffers,static) = {
989 .function = process_drop,
990 .name = "error-drop",
991 .flags = VLIB_NODE_FLAG_IS_DROP,
992 .vector_size = sizeof (u32),
993 .format_trace = format_vnet_error_trace,
994 .validate_frame = validate_error_frame,
998 VLIB_NODE_FUNCTION_MULTIARCH (drop_buffers, process_drop);
1001 VLIB_REGISTER_NODE (punt_buffers,static) = {
1002 .function = process_punt,
1003 .flags = (VLIB_NODE_FLAG_FRAME_NO_FREE_AFTER_DISPATCH
1004 | VLIB_NODE_FLAG_IS_PUNT),
1005 .name = "error-punt",
1006 .vector_size = sizeof (u32),
1007 .format_trace = format_vnet_error_trace,
1008 .validate_frame = validate_error_frame,
1012 VLIB_NODE_FUNCTION_MULTIARCH (punt_buffers, process_punt);
1015 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node,static) = {
1016 .function = vnet_per_buffer_interface_output,
1017 .name = "interface-output",
1018 .vector_size = sizeof (u32),
1022 VLIB_NODE_FUNCTION_MULTIARCH (vnet_per_buffer_interface_output_node,
1023 vnet_per_buffer_interface_output);
1026 interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1027 vlib_frame_t * from_frame)
1029 vnet_main_t *vnm = vnet_get_main ();
1030 u32 last_sw_if_index = ~0;
1031 vlib_frame_t *to_frame = 0;
1032 vnet_hw_interface_t *hw = 0;
1033 u32 *from, *to_next = 0;
1036 from = vlib_frame_vector_args (from_frame);
1037 n_left_from = from_frame->n_vectors;
1038 while (n_left_from > 0)
1047 b0 = vlib_get_buffer (vm, bi0);
1048 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
1050 if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
1054 hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
1055 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1057 last_sw_if_index = sw_if_index0;
1058 hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
1059 to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
1060 to_next = vlib_frame_vector_args (to_frame);
1065 to_frame->n_vectors++;
1067 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1068 return from_frame->n_vectors;
1072 VLIB_REGISTER_NODE (interface_tx, static) = {
1073 .function = interface_tx_node_fn,
1074 .name = "interface-tx",
1075 .vector_size = sizeof (u32),
1082 VNET_FEATURE_ARC_INIT (interface_output, static) =
1084 .arc_name = "interface-output",
1085 .start_nodes = VNET_FEATURES (0),
1086 .last_in_arc = "interface-tx",
1087 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1090 VNET_FEATURE_INIT (span_tx, static) = {
1091 .arc_name = "interface-output",
1092 .node_name = "span-output",
1093 .runs_before = VNET_FEATURES ("interface-tx"),
1096 VNET_FEATURE_INIT (ipsec_if_tx, static) = {
1097 .arc_name = "interface-output",
1098 .node_name = "ipsec-if-output",
1099 .runs_before = VNET_FEATURES ("interface-tx"),
1102 VNET_FEATURE_INIT (interface_tx, static) = {
1103 .arc_name = "interface-output",
1104 .node_name = "interface-tx",
1110 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1114 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1117 if (hi->output_node_index == 0)
1120 next_index = vlib_node_add_next
1121 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1122 hi->output_node_index);
1123 hi->output_node_next_index = next_index;
1128 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1129 (vnet_per_buffer_interface_output_hw_interface_add_del);
1132 vnet_set_interface_output_node (vnet_main_t * vnm,
1133 u32 hw_if_index, u32 node_index)
1135 ASSERT (node_index);
1136 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1137 u32 next_index = vlib_node_add_next
1138 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
1139 hi->output_node_next_index = next_index;
1140 hi->output_node_index = node_index;
1143 static clib_error_t *
1144 pcap_drop_trace_command_fn (vlib_main_t * vm,
1145 unformat_input_t * input,
1146 vlib_cli_command_t * cmd)
1148 vnet_main_t *vnm = vnet_get_main ();
1149 vnet_interface_main_t *im = &vnm->interface_main;
1153 clib_error_t *error = 0;
1155 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1157 if (unformat (input, "on"))
1159 if (im->drop_pcap_enable == 0)
1161 if (im->pcap_filename == 0)
1162 im->pcap_filename = format (0, "/tmp/drop.pcap%c", 0);
1164 clib_memset (&im->pcap_main, 0, sizeof (im->pcap_main));
1165 im->pcap_main.file_name = (char *) im->pcap_filename;
1166 im->pcap_main.n_packets_to_capture = 100;
1167 if (im->pcap_pkts_to_capture)
1168 im->pcap_main.n_packets_to_capture = im->pcap_pkts_to_capture;
1170 im->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
1171 im->drop_pcap_enable = 1;
1173 vlib_cli_output (vm, "pcap drop capture on...");
1177 vlib_cli_output (vm, "pcap drop capture already on...");
1181 else if (unformat (input, "off"))
1185 if (im->drop_pcap_enable)
1187 vlib_cli_output (vm, "captured %d pkts...",
1188 im->pcap_main.n_packets_captured);
1189 if (im->pcap_main.n_packets_captured)
1191 im->pcap_main.n_packets_to_capture =
1192 im->pcap_main.n_packets_captured;
1193 error = pcap_write (&im->pcap_main);
1195 clib_error_report (error);
1197 vlib_cli_output (vm, "saved to %s...", im->pcap_filename);
1202 vlib_cli_output (vm, "pcap drop capture already off...");
1205 im->drop_pcap_enable = 0;
1207 else if (unformat (input, "max %d", &max))
1209 im->pcap_pkts_to_capture = max;
1213 else if (unformat (input, "intfc %U",
1214 unformat_vnet_sw_interface, vnm,
1215 &im->pcap_sw_if_index))
1217 else if (unformat (input, "intfc any"))
1219 im->pcap_sw_if_index = 0;
1222 else if (unformat (input, "file %s", &filename))
1224 u8 *chroot_filename;
1225 /* Brain-police user path input */
1226 if (strstr ((char *) filename, "..")
1227 || index ((char *) filename, '/'))
1229 vlib_cli_output (vm, "illegal characters in filename '%s'",
1234 chroot_filename = format (0, "/tmp/%s%c", filename, 0);
1235 vec_free (filename);
1237 if (im->pcap_filename)
1238 vec_free (im->pcap_filename);
1239 im->pcap_filename = chroot_filename;
1240 im->pcap_main.file_name = (char *) im->pcap_filename;
1243 else if (unformat (input, "status"))
1245 if (im->drop_pcap_enable == 0)
1247 vlib_cli_output (vm, "pcap drop capture is off...");
1251 vlib_cli_output (vm, "pcap drop capture: %d of %d pkts...",
1252 im->pcap_main.n_packets_captured,
1253 im->pcap_main.n_packets_to_capture);
1262 return clib_error_return (0, "unknown input `%U'",
1263 format_unformat_error, input);
1269 VLIB_CLI_COMMAND (pcap_trace_command, static) = {
1270 .path = "pcap drop trace",
1272 "pcap drop trace on off max <nn> intfc <intfc> file <name> status",
1273 .function = pcap_drop_trace_command_fn,
1278 * fd.io coding-style-patch-verification: ON
1281 * eval: (c-set-style "gnu")