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>
46 #include <vnet/classify/trace_classify.h>
47 #include <vnet/interface_output.h>
53 u8 data[128 - 2 * sizeof (u32)];
55 interface_output_trace_t;
57 #ifndef CLIB_MARCH_VARIANT
59 format_vnet_interface_output_trace (u8 * s, va_list * va)
61 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
62 vlib_node_t *node = va_arg (*va, vlib_node_t *);
63 interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
64 vnet_main_t *vnm = vnet_get_main ();
65 vnet_sw_interface_t *si;
68 if (t->sw_if_index != (u32) ~ 0)
70 indent = format_get_indent (s);
72 if (pool_is_free_index
73 (vnm->interface_main.sw_interfaces, t->sw_if_index))
75 /* the interface may have been deleted by the time the trace is printed */
76 s = format (s, "sw_if_index: %d ", t->sw_if_index);
80 si = vnet_get_sw_interface (vnm, t->sw_if_index);
82 format (s, "%U ", format_vnet_sw_interface_name, vnm, si,
86 format (s, "\n%U%U", format_white_space, indent,
87 node->format_buffer ? node->format_buffer : format_hex_bytes,
88 t->data, sizeof (t->data));
94 vnet_interface_output_trace (vlib_main_t * vm,
95 vlib_node_runtime_t * node,
96 vlib_frame_t * frame, uword n_buffers)
101 from = vlib_frame_vector_args (frame);
106 vlib_buffer_t *b0, *b1;
107 interface_output_trace_t *t0, *t1;
109 /* Prefetch next iteration. */
110 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
111 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
116 b0 = vlib_get_buffer (vm, bi0);
117 b1 = vlib_get_buffer (vm, bi1);
119 if (b0->flags & VLIB_BUFFER_IS_TRACED)
121 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
122 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
123 t0->flags = b0->flags;
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 t1->flags = b1->flags;
132 clib_memcpy_fast (t1->data, vlib_buffer_get_current (b1),
143 interface_output_trace_t *t0;
147 b0 = vlib_get_buffer (vm, bi0);
149 if (b0->flags & VLIB_BUFFER_IS_TRACED)
151 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
152 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
153 t0->flags = b0->flags;
154 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
162 static_always_inline uword
163 vnet_interface_output_node_inline (vlib_main_t * vm,
164 vlib_node_runtime_t * node,
165 vlib_frame_t * frame,
167 vnet_hw_interface_t * hi,
170 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
171 vnet_sw_interface_t *si;
172 u32 n_left_to_tx, *from, *from_end, *to_tx;
173 u32 n_bytes, n_buffers, n_packets;
174 u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3;
175 u32 thread_index = vm->thread_index;
176 vnet_interface_main_t *im = &vnm->interface_main;
177 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
178 u32 current_config_index = ~0;
179 u8 arc = im->output_feature_arc_index;
180 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
182 n_buffers = frame->n_vectors;
184 if (node->flags & VLIB_NODE_FLAG_TRACE)
185 vnet_interface_output_trace (vm, node, frame, n_buffers);
187 from = vlib_frame_vector_args (frame);
188 vlib_get_buffers (vm, from, b, n_buffers);
191 return vlib_error_drop_buffers (vm, node, from,
192 /* buffer stride */ 1,
194 VNET_INTERFACE_OUTPUT_NEXT_DROP,
196 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
198 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
199 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
200 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
201 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
203 vlib_simple_counter_main_t *cm;
205 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
206 VNET_INTERFACE_COUNTER_TX_ERROR);
207 vlib_increment_simple_counter (cm, thread_index,
208 rt->sw_if_index, n_buffers);
210 return vlib_error_drop_buffers (vm, node, from,
211 /* buffer stride */ 1,
213 VNET_INTERFACE_OUTPUT_NEXT_DROP,
215 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
218 from_end = from + n_buffers;
220 /* Total byte count of all buffers. */
224 /* interface-output feature arc handling */
225 if (PREDICT_FALSE (vnet_have_features (arc, rt->sw_if_index)))
227 vnet_feature_config_main_t *fcm;
228 fcm = vnet_feature_get_config_main (arc);
229 current_config_index = vnet_get_feature_config_index (arc,
231 vnet_get_config_data (&fcm->config_main, ¤t_config_index,
235 while (from < from_end)
237 /* Get new next frame since previous incomplete frame may have less
238 than VNET_FRAME_SIZE vectors in it. */
239 vlib_get_new_next_frame (vm, node, next_index, to_tx, n_left_to_tx);
241 while (from + 8 <= from_end && n_left_to_tx >= 4)
243 u32 bi0, bi1, bi2, bi3;
244 u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
247 /* Prefetch next iteration. */
248 vlib_prefetch_buffer_header (b[4], LOAD);
249 vlib_prefetch_buffer_header (b[5], LOAD);
250 vlib_prefetch_buffer_header (b[6], LOAD);
251 vlib_prefetch_buffer_header (b[7], LOAD);
262 or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags;
268 /* Be grumpy about zero length buffers for benefit of
269 driver tx function. */
270 ASSERT (b[0]->current_length > 0);
271 ASSERT (b[1]->current_length > 0);
272 ASSERT (b[2]->current_length > 0);
273 ASSERT (b[3]->current_length > 0);
275 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
276 n_bytes_b1 = vlib_buffer_length_in_chain (vm, b[1]);
277 n_bytes_b2 = vlib_buffer_length_in_chain (vm, b[2]);
278 n_bytes_b3 = vlib_buffer_length_in_chain (vm, b[3]);
279 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
280 tx_swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
281 tx_swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
282 tx_swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
284 n_bytes += n_bytes_b0 + n_bytes_b1;
285 n_bytes += n_bytes_b2 + n_bytes_b3;
288 if (PREDICT_FALSE (current_config_index != ~0))
290 vnet_buffer (b[0])->feature_arc_index = arc;
291 vnet_buffer (b[1])->feature_arc_index = arc;
292 vnet_buffer (b[2])->feature_arc_index = arc;
293 vnet_buffer (b[3])->feature_arc_index = arc;
294 b[0]->current_config_index = current_config_index;
295 b[1]->current_config_index = current_config_index;
296 b[2]->current_config_index = current_config_index;
297 b[3]->current_config_index = current_config_index;
300 /* update vlan subif tx counts, if required */
301 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
303 vlib_increment_combined_counter (im->combined_sw_if_counters +
304 VNET_INTERFACE_COUNTER_TX,
305 thread_index, tx_swif0, 1,
309 if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index))
312 vlib_increment_combined_counter (im->combined_sw_if_counters +
313 VNET_INTERFACE_COUNTER_TX,
314 thread_index, tx_swif1, 1,
318 if (PREDICT_FALSE (tx_swif2 != rt->sw_if_index))
321 vlib_increment_combined_counter (im->combined_sw_if_counters +
322 VNET_INTERFACE_COUNTER_TX,
323 thread_index, tx_swif2, 1,
326 if (PREDICT_FALSE (tx_swif3 != rt->sw_if_index))
329 vlib_increment_combined_counter (im->combined_sw_if_counters +
330 VNET_INTERFACE_COUNTER_TX,
331 thread_index, tx_swif3, 1,
337 u32 vnet_buffer_offload_flags =
338 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
339 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
340 VNET_BUFFER_F_OFFLOAD_IP_CKSUM);
341 if (or_flags & vnet_buffer_offload_flags)
343 if (b[0]->flags & vnet_buffer_offload_flags)
344 vnet_calc_checksums_inline
346 b[0]->flags & VNET_BUFFER_F_IS_IP4,
347 b[0]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
348 if (b[1]->flags & vnet_buffer_offload_flags)
349 vnet_calc_checksums_inline
351 b[1]->flags & VNET_BUFFER_F_IS_IP4,
352 b[1]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
353 if (b[2]->flags & vnet_buffer_offload_flags)
354 vnet_calc_checksums_inline
356 b[2]->flags & VNET_BUFFER_F_IS_IP4,
357 b[2]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
358 if (b[3]->flags & vnet_buffer_offload_flags)
359 vnet_calc_checksums_inline
361 b[3]->flags & VNET_BUFFER_F_IS_IP4,
362 b[3]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
369 while (from + 1 <= from_end && n_left_to_tx >= 1)
380 /* Be grumpy about zero length buffers for benefit of
381 driver tx function. */
382 ASSERT (b[0]->current_length > 0);
384 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
385 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
386 n_bytes += n_bytes_b0;
389 if (PREDICT_FALSE (current_config_index != ~0))
391 vnet_buffer (b[0])->feature_arc_index = arc;
392 b[0]->current_config_index = current_config_index;
395 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
398 vlib_increment_combined_counter (im->combined_sw_if_counters +
399 VNET_INTERFACE_COUNTER_TX,
400 thread_index, tx_swif0, 1,
407 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
408 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
409 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
410 vnet_calc_checksums_inline
412 b[0]->flags & VNET_BUFFER_F_IS_IP4,
413 b[0]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
418 vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
421 /* Update main interface stats. */
422 vlib_increment_combined_counter (im->combined_sw_if_counters
423 + VNET_INTERFACE_COUNTER_TX,
425 rt->sw_if_index, n_packets, n_bytes);
428 #endif /* CLIB_MARCH_VARIANT */
430 static_always_inline void vnet_interface_pcap_tx_trace
431 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame,
432 int sw_if_index_from_buffer)
434 u32 n_left_from, *from;
436 vnet_pcap_t *pp = &vlib_global_main.pcap;
438 if (PREDICT_TRUE (pp->pcap_tx_enable == 0))
441 if (sw_if_index_from_buffer == 0)
443 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
444 sw_if_index = rt->sw_if_index;
449 n_left_from = frame->n_vectors;
450 from = vlib_frame_vector_args (frame);
452 while (n_left_from > 0)
454 int classify_filter_result;
456 vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
460 if (pp->filter_classify_table_index != ~0)
462 classify_filter_result =
463 vnet_is_packet_traced_inline
464 (b0, pp->filter_classify_table_index, 0 /* full classify */ );
465 if (classify_filter_result)
466 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
470 if (sw_if_index_from_buffer)
471 sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
473 if (pp->pcap_sw_if_index == 0 || pp->pcap_sw_if_index == sw_if_index)
475 vnet_main_t *vnm = vnet_get_main ();
476 vnet_hw_interface_t *hi =
477 vnet_get_sup_hw_interface (vnm, sw_if_index);
478 /* Capture pkt if not filtered, or if filter hits */
479 if (hi->trace_classify_table_index == ~0 ||
480 vnet_is_packet_traced_inline
481 (b0, hi->trace_classify_table_index, 0 /* full classify */ ))
482 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
487 #ifndef CLIB_MARCH_VARIANT
490 vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node,
491 vlib_frame_t * frame)
493 vnet_main_t *vnm = vnet_get_main ();
494 vnet_hw_interface_t *hi;
495 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
496 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
498 vnet_interface_pcap_tx_trace (vm, node, frame,
499 0 /* sw_if_index_from_buffer */ );
501 if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
502 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
503 /* do_tx_offloads */ 0);
505 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
506 /* do_tx_offloads */ 1);
508 #endif /* CLIB_MARCH_VARIANT */
510 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
511 VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm,
512 vlib_node_runtime_t *
514 vlib_frame_t * frame)
516 vnet_main_t *vnm = vnet_get_main ();
517 u32 n_left_to_next, *from, *to_next;
518 u32 n_left_from, next_index;
520 vnet_interface_pcap_tx_trace (vm, node, frame,
521 1 /* sw_if_index_from_buffer */ );
523 n_left_from = frame->n_vectors;
525 from = vlib_frame_vector_args (frame);
526 next_index = node->cached_next_index;
528 while (n_left_from > 0)
530 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
532 while (n_left_from >= 4 && n_left_to_next >= 2)
534 u32 bi0, bi1, next0, next1;
535 vlib_buffer_t *b0, *b1;
536 vnet_hw_interface_t *hi0, *hi1;
538 /* Prefetch next iteration. */
539 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
540 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
551 b0 = vlib_get_buffer (vm, bi0);
552 b1 = vlib_get_buffer (vm, bi1);
555 vnet_get_sup_hw_interface (vnm,
556 vnet_buffer (b0)->sw_if_index
559 vnet_get_sup_hw_interface (vnm,
560 vnet_buffer (b1)->sw_if_index
563 next0 = hi0->output_node_next_index;
564 next1 = hi1->output_node_next_index;
566 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
567 n_left_to_next, bi0, bi1, next0,
571 while (n_left_from > 0 && n_left_to_next > 0)
575 vnet_hw_interface_t *hi0;
584 b0 = vlib_get_buffer (vm, bi0);
587 vnet_get_sup_hw_interface (vnm,
588 vnet_buffer (b0)->sw_if_index
591 next0 = hi0->output_node_next_index;
593 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
594 n_left_to_next, bi0, next0);
597 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
600 return frame->n_vectors;
603 typedef struct vnet_error_trace_t_
606 } vnet_error_trace_t;
610 format_vnet_error_trace (u8 * s, va_list * va)
612 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
613 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
614 vnet_error_trace_t *t = va_arg (*va, vnet_error_trace_t *);
616 s = format (s, "rx:%U", format_vnet_sw_if_index_name,
617 vnet_get_main (), t->sw_if_index);
623 interface_trace_buffers (vlib_main_t * vm,
624 vlib_node_runtime_t * node, vlib_frame_t * frame)
626 u32 n_left, *buffers;
628 buffers = vlib_frame_vector_args (frame);
629 n_left = frame->n_vectors;
634 vlib_buffer_t *b0, *b1;
635 vnet_error_trace_t *t0, *t1;
637 /* Prefetch next iteration. */
638 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
639 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
644 b0 = vlib_get_buffer (vm, bi0);
645 b1 = vlib_get_buffer (vm, bi1);
647 if (b0->flags & VLIB_BUFFER_IS_TRACED)
649 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
650 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
652 if (b1->flags & VLIB_BUFFER_IS_TRACED)
654 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
655 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
665 vnet_error_trace_t *t0;
669 b0 = vlib_get_buffer (vm, bi0);
671 if (b0->flags & VLIB_BUFFER_IS_TRACED)
673 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
674 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
683 VNET_ERROR_DISPOSITION_DROP,
684 VNET_ERROR_DISPOSITION_PUNT,
685 VNET_ERROR_N_DISPOSITION,
686 } vnet_error_disposition_t;
688 static_always_inline uword
689 interface_drop_punt (vlib_main_t * vm,
690 vlib_node_runtime_t * node,
691 vlib_frame_t * frame,
692 vnet_error_disposition_t disposition)
694 u32 *from, n_left, thread_index, *sw_if_index;
695 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
696 u32 sw_if_indices[VLIB_FRAME_SIZE];
697 vlib_simple_counter_main_t *cm;
698 u16 nexts[VLIB_FRAME_SIZE];
701 vnm = vnet_get_main ();
702 thread_index = vm->thread_index;
703 from = vlib_frame_vector_args (frame);
704 n_left = frame->n_vectors;
706 sw_if_index = sw_if_indices;
708 vlib_get_buffers (vm, from, bufs, n_left);
710 if (node->flags & VLIB_NODE_FLAG_TRACE)
711 interface_trace_buffers (vm, node, frame);
713 /* All going to drop regardless, this is just a counting exercise */
714 clib_memset (nexts, 0, sizeof (nexts));
716 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
717 (disposition == VNET_ERROR_DISPOSITION_PUNT
718 ? VNET_INTERFACE_COUNTER_PUNT
719 : VNET_INTERFACE_COUNTER_DROP));
721 /* collect the array of interfaces first ... */
726 /* Prefetch 8 ahead - there's not much going on in each iteration */
727 vlib_prefetch_buffer_header (b[4], LOAD);
728 vlib_prefetch_buffer_header (b[5], LOAD);
729 vlib_prefetch_buffer_header (b[6], LOAD);
730 vlib_prefetch_buffer_header (b[7], LOAD);
732 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
733 sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
734 sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
735 sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
743 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
750 /* ... then count against them in blocks */
751 n_left = frame->n_vectors;
755 vnet_sw_interface_t *sw_if0;
758 off = frame->n_vectors - n_left;
760 sw_if_index = sw_if_indices + off;
762 count = clib_count_equal_u32 (sw_if_index, n_left);
765 vlib_increment_simple_counter (cm, thread_index, sw_if_index[0], count);
767 /* Increment super-interface drop/punt counters for
769 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index[0]);
770 if (sw_if0->sup_sw_if_index != sw_if_index[0])
771 vlib_increment_simple_counter
772 (cm, thread_index, sw_if0->sup_sw_if_index, count);
775 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
777 return frame->n_vectors;
781 pcap_drop_trace (vlib_main_t * vm,
782 vnet_interface_main_t * im,
783 vnet_pcap_t * pp, vlib_frame_t * f)
786 u32 n_left = f->n_vectors;
787 vlib_buffer_t *b0, *p1;
789 i16 save_current_data;
790 u16 save_current_length;
791 vlib_error_main_t *em = &vm->error_main;
795 from = vlib_frame_vector_args (f);
799 if (PREDICT_TRUE (n_left > 1))
801 p1 = vlib_get_buffer (vm, from[1]);
802 vlib_prefetch_buffer_header (p1, LOAD);
806 b0 = vlib_get_buffer (vm, bi0);
810 /* See if we're pointedly ignoring this specific error */
811 if (im->pcap_drop_filter_hash
812 && hash_get (im->pcap_drop_filter_hash, b0->error))
815 do_trace = (pp->pcap_sw_if_index == 0) ||
816 pp->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX];
819 (do_trace == 0 && pp->filter_classify_table_index != ~0))
821 do_trace = vnet_is_packet_traced_inline
822 (b0, pp->filter_classify_table_index, 0 /* full classify */ );
825 /* Trace all drops, or drops received on a specific interface */
828 save_current_data = b0->current_data;
829 save_current_length = b0->current_length;
832 * Typically, we'll need to rewind the buffer
833 * if l2_hdr_offset is valid, make sure to rewind to the start of
834 * the L2 header. This may not be the buffer start in case we pop-ed
836 * Otherwise, rewind to buffer start and hope for the best.
838 if (b0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
840 if (b0->current_data > vnet_buffer (b0)->l2_hdr_offset)
841 vlib_buffer_advance (b0,
842 vnet_buffer (b0)->l2_hdr_offset -
845 else if (b0->current_data > 0)
846 vlib_buffer_advance (b0, (word) - b0->current_data);
849 vlib_buffer_t *last = b0;
850 u32 error_node_index;
853 /* Length of the error string */
854 int error_string_len =
855 clib_strnlen (em->error_strings_heap[b0->error], 128);
857 /* Dig up the drop node */
858 error_node_index = vm->node_main.node_by_error[b0->error];
859 n = vlib_get_node (vm, error_node_index);
861 /* Length of full drop string, w/ "nodename: " prepended */
862 drop_string_len = error_string_len + vec_len (n->name) + 2;
864 /* Find the last buffer in the chain */
865 while (last->flags & VLIB_BUFFER_NEXT_PRESENT)
866 last = vlib_get_buffer (vm, last->next_buffer);
869 * Append <nodename>: <error-string> to the capture,
870 * only if we can do that without allocating a new buffer.
872 if (PREDICT_TRUE ((last->current_data + last->current_length)
873 < (VLIB_BUFFER_DEFAULT_DATA_SIZE
876 clib_memcpy_fast (last->data + last->current_data +
877 last->current_length, n->name,
879 clib_memcpy_fast (last->data + last->current_data +
880 last->current_length + vec_len (n->name),
882 clib_memcpy_fast (last->data + last->current_data +
883 last->current_length + vec_len (n->name) +
884 2, em->error_strings_heap[b0->error],
886 last->current_length += drop_string_len;
887 b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
888 pcap_add_buffer (&pp->pcap_main, vm, bi0,
889 pp->max_bytes_per_pkt);
890 last->current_length -= drop_string_len;
891 b0->current_data = save_current_data;
892 b0->current_length = save_current_length;
898 * Didn't have space in the last buffer, here's the dropped
901 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
903 b0->current_data = save_current_data;
904 b0->current_length = save_current_length;
909 #ifndef CLIB_MARCH_VARIANT
911 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
913 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
915 if (im->pcap_drop_filter_hash == 0)
916 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
919 hash_set (im->pcap_drop_filter_hash, error_index, 1);
921 hash_unset (im->pcap_drop_filter_hash, error_index);
923 #endif /* CLIB_MARCH_VARIANT */
925 VLIB_NODE_FN (interface_drop) (vlib_main_t * vm,
926 vlib_node_runtime_t * node,
927 vlib_frame_t * frame)
929 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
930 vnet_pcap_t *pp = &vlib_global_main.pcap;
932 if (PREDICT_FALSE (pp->pcap_drop_enable))
933 pcap_drop_trace (vm, im, pp, frame);
935 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
938 VLIB_NODE_FN (interface_punt) (vlib_main_t * vm,
939 vlib_node_runtime_t * node,
940 vlib_frame_t * frame)
942 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
946 VLIB_REGISTER_NODE (interface_drop) = {
947 .name = "error-drop",
948 .vector_size = sizeof (u32),
949 .format_trace = format_vnet_error_trace,
958 VLIB_REGISTER_NODE (interface_punt) = {
959 .name = "error-punt",
960 .vector_size = sizeof (u32),
961 .format_trace = format_vnet_error_trace,
970 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node) = {
971 .name = "interface-output",
972 .vector_size = sizeof (u32),
977 interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
978 vlib_frame_t * from_frame)
980 vnet_main_t *vnm = vnet_get_main ();
981 u32 last_sw_if_index = ~0;
982 vlib_frame_t *to_frame = 0;
983 vnet_hw_interface_t *hw = 0;
984 u32 *from, *to_next = 0;
987 from = vlib_frame_vector_args (from_frame);
988 n_left_from = from_frame->n_vectors;
989 while (n_left_from > 0)
998 b0 = vlib_get_buffer (vm, bi0);
999 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
1001 if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
1005 hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
1006 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1008 last_sw_if_index = sw_if_index0;
1009 hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
1010 to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
1011 to_next = vlib_frame_vector_args (to_frame);
1016 to_frame->n_vectors++;
1018 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1019 return from_frame->n_vectors;
1023 VLIB_REGISTER_NODE (interface_tx) = {
1024 .function = interface_tx_node_fn,
1025 .name = "interface-tx",
1026 .vector_size = sizeof (u32),
1033 VNET_FEATURE_ARC_INIT (interface_output, static) =
1035 .arc_name = "interface-output",
1036 .start_nodes = VNET_FEATURES (0),
1037 .last_in_arc = "interface-tx",
1038 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1041 VNET_FEATURE_INIT (span_tx, static) = {
1042 .arc_name = "interface-output",
1043 .node_name = "span-output",
1044 .runs_before = VNET_FEATURES ("interface-tx"),
1047 VNET_FEATURE_INIT (ipsec_if_tx, static) = {
1048 .arc_name = "interface-output",
1049 .node_name = "ipsec-if-output",
1050 .runs_before = VNET_FEATURES ("interface-tx"),
1053 VNET_FEATURE_INIT (interface_tx, static) = {
1054 .arc_name = "interface-output",
1055 .node_name = "interface-tx",
1060 #ifndef CLIB_MARCH_VARIANT
1062 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1066 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1069 if (hi->output_node_index == 0)
1072 next_index = vlib_node_add_next
1073 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1074 hi->output_node_index);
1075 hi->output_node_next_index = next_index;
1080 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1081 (vnet_per_buffer_interface_output_hw_interface_add_del);
1084 vnet_set_interface_output_node (vnet_main_t * vnm,
1085 u32 hw_if_index, u32 node_index)
1087 ASSERT (node_index);
1088 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1089 u32 next_index = vlib_node_add_next
1090 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
1091 hi->output_node_next_index = next_index;
1092 hi->output_node_index = node_index;
1094 #endif /* CLIB_MARCH_VARIANT */
1097 * fd.io coding-style-patch-verification: ON
1100 * eval: (c-set-style "gnu")