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>
52 u8 data[128 - 2 * sizeof (u32)];
54 interface_output_trace_t;
56 #ifndef CLIB_MARCH_VARIANT
58 format_vnet_interface_output_trace (u8 * s, va_list * va)
60 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
61 vlib_node_t *node = va_arg (*va, vlib_node_t *);
62 interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
63 vnet_main_t *vnm = vnet_get_main ();
64 vnet_sw_interface_t *si;
67 if (t->sw_if_index != (u32) ~ 0)
69 indent = format_get_indent (s);
71 if (pool_is_free_index
72 (vnm->interface_main.sw_interfaces, t->sw_if_index))
74 /* the interface may have been deleted by the time the trace is printed */
75 s = format (s, "sw_if_index: %d ", t->sw_if_index);
79 si = vnet_get_sw_interface (vnm, t->sw_if_index);
81 format (s, "%U ", format_vnet_sw_interface_name, vnm, si,
85 format (s, "\n%U%U", format_white_space, indent,
86 node->format_buffer ? node->format_buffer : format_hex_bytes,
87 t->data, sizeof (t->data));
93 vnet_interface_output_trace (vlib_main_t * vm,
94 vlib_node_runtime_t * node,
95 vlib_frame_t * frame, uword n_buffers)
100 from = vlib_frame_vector_args (frame);
105 vlib_buffer_t *b0, *b1;
106 interface_output_trace_t *t0, *t1;
108 /* Prefetch next iteration. */
109 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
110 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
115 b0 = vlib_get_buffer (vm, bi0);
116 b1 = vlib_get_buffer (vm, bi1);
118 if (b0->flags & VLIB_BUFFER_IS_TRACED)
120 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
121 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
122 t0->flags = b0->flags;
123 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
126 if (b1->flags & VLIB_BUFFER_IS_TRACED)
128 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
129 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
130 t1->flags = b1->flags;
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 t0->flags = b0->flags;
153 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
161 static_always_inline void
162 calc_checksums (vlib_main_t * vm, vlib_buffer_t * b)
167 int is_ip4 = (b->flags & VNET_BUFFER_F_IS_IP4) != 0;
168 int is_ip6 = (b->flags & VNET_BUFFER_F_IS_IP6) != 0;
170 ASSERT (!(is_ip4 && is_ip6));
172 th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
173 uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
179 ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
180 if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
181 ip4->checksum = ip4_header_checksum (ip4);
182 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
185 th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
187 else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
188 uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
195 ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
196 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
200 ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
202 else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
206 ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
209 b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
210 b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
211 b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
214 static_always_inline uword
215 vnet_interface_output_node_inline (vlib_main_t * vm,
216 vlib_node_runtime_t * node,
217 vlib_frame_t * frame,
219 vnet_hw_interface_t * hi,
222 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
223 vnet_sw_interface_t *si;
224 u32 n_left_to_tx, *from, *from_end, *to_tx;
225 u32 n_bytes, n_buffers, n_packets;
226 u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3;
227 u32 thread_index = vm->thread_index;
228 vnet_interface_main_t *im = &vnm->interface_main;
229 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
230 u32 current_config_index = ~0;
231 u8 arc = im->output_feature_arc_index;
232 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
234 n_buffers = frame->n_vectors;
236 if (node->flags & VLIB_NODE_FLAG_TRACE)
237 vnet_interface_output_trace (vm, node, frame, n_buffers);
239 from = vlib_frame_vector_args (frame);
240 vlib_get_buffers (vm, from, b, n_buffers);
243 return vlib_error_drop_buffers (vm, node, from,
244 /* buffer stride */ 1,
246 VNET_INTERFACE_OUTPUT_NEXT_DROP,
248 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
250 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
251 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
252 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
253 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
255 vlib_simple_counter_main_t *cm;
257 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
258 VNET_INTERFACE_COUNTER_TX_ERROR);
259 vlib_increment_simple_counter (cm, thread_index,
260 rt->sw_if_index, n_buffers);
262 return vlib_error_drop_buffers (vm, node, from,
263 /* buffer stride */ 1,
265 VNET_INTERFACE_OUTPUT_NEXT_DROP,
267 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
270 from_end = from + n_buffers;
272 /* Total byte count of all buffers. */
276 /* interface-output feature arc handling */
277 if (PREDICT_FALSE (vnet_have_features (arc, rt->sw_if_index)))
279 vnet_feature_config_main_t *fcm;
280 fcm = vnet_feature_get_config_main (arc);
281 current_config_index = vnet_get_feature_config_index (arc,
283 vnet_get_config_data (&fcm->config_main, ¤t_config_index,
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, next_index, to_tx, n_left_to_tx);
293 while (from + 8 <= from_end && n_left_to_tx >= 4)
295 u32 bi0, bi1, bi2, bi3;
296 u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
299 /* Prefetch next iteration. */
300 vlib_prefetch_buffer_header (b[4], LOAD);
301 vlib_prefetch_buffer_header (b[5], LOAD);
302 vlib_prefetch_buffer_header (b[6], LOAD);
303 vlib_prefetch_buffer_header (b[7], LOAD);
314 or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags;
320 /* Be grumpy about zero length buffers for benefit of
321 driver tx function. */
322 ASSERT (b[0]->current_length > 0);
323 ASSERT (b[1]->current_length > 0);
324 ASSERT (b[2]->current_length > 0);
325 ASSERT (b[3]->current_length > 0);
327 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
328 n_bytes_b1 = vlib_buffer_length_in_chain (vm, b[1]);
329 n_bytes_b2 = vlib_buffer_length_in_chain (vm, b[2]);
330 n_bytes_b3 = vlib_buffer_length_in_chain (vm, b[3]);
331 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
332 tx_swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
333 tx_swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
334 tx_swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
336 n_bytes += n_bytes_b0 + n_bytes_b1;
337 n_bytes += n_bytes_b2 + n_bytes_b3;
340 if (PREDICT_FALSE (current_config_index != ~0))
342 vnet_buffer (b[0])->feature_arc_index = arc;
343 vnet_buffer (b[1])->feature_arc_index = arc;
344 vnet_buffer (b[2])->feature_arc_index = arc;
345 vnet_buffer (b[3])->feature_arc_index = arc;
346 b[0]->current_config_index = current_config_index;
347 b[1]->current_config_index = current_config_index;
348 b[2]->current_config_index = current_config_index;
349 b[3]->current_config_index = current_config_index;
352 /* update vlan subif tx counts, if required */
353 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
355 vlib_increment_combined_counter (im->combined_sw_if_counters +
356 VNET_INTERFACE_COUNTER_TX,
357 thread_index, tx_swif0, 1,
361 if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index))
364 vlib_increment_combined_counter (im->combined_sw_if_counters +
365 VNET_INTERFACE_COUNTER_TX,
366 thread_index, tx_swif1, 1,
370 if (PREDICT_FALSE (tx_swif2 != rt->sw_if_index))
373 vlib_increment_combined_counter (im->combined_sw_if_counters +
374 VNET_INTERFACE_COUNTER_TX,
375 thread_index, tx_swif2, 1,
378 if (PREDICT_FALSE (tx_swif3 != rt->sw_if_index))
381 vlib_increment_combined_counter (im->combined_sw_if_counters +
382 VNET_INTERFACE_COUNTER_TX,
383 thread_index, tx_swif3, 1,
390 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
391 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
392 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
394 calc_checksums (vm, b[0]);
395 calc_checksums (vm, b[1]);
396 calc_checksums (vm, b[2]);
397 calc_checksums (vm, b[3]);
404 while (from + 1 <= from_end && n_left_to_tx >= 1)
415 /* Be grumpy about zero length buffers for benefit of
416 driver tx function. */
417 ASSERT (b[0]->current_length > 0);
419 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
420 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
421 n_bytes += n_bytes_b0;
424 if (PREDICT_FALSE (current_config_index != ~0))
426 vnet_buffer (b[0])->feature_arc_index = arc;
427 b[0]->current_config_index = current_config_index;
430 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
433 vlib_increment_combined_counter (im->combined_sw_if_counters +
434 VNET_INTERFACE_COUNTER_TX,
435 thread_index, tx_swif0, 1,
442 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
443 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
444 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
445 calc_checksums (vm, b[0]);
450 vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
453 /* Update main interface stats. */
454 vlib_increment_combined_counter (im->combined_sw_if_counters
455 + VNET_INTERFACE_COUNTER_TX,
457 rt->sw_if_index, n_packets, n_bytes);
460 #endif /* CLIB_MARCH_VARIANT */
462 static_always_inline void vnet_interface_pcap_tx_trace
463 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame,
464 int sw_if_index_from_buffer)
466 u32 n_left_from, *from;
468 vnet_pcap_t *pp = &vlib_global_main.pcap;
470 if (PREDICT_TRUE (pp->pcap_tx_enable == 0))
473 if (sw_if_index_from_buffer == 0)
475 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
476 sw_if_index = rt->sw_if_index;
481 n_left_from = frame->n_vectors;
482 from = vlib_frame_vector_args (frame);
484 while (n_left_from > 0)
486 int classify_filter_result;
488 vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
492 if (pp->filter_classify_table_index != ~0)
494 classify_filter_result =
495 vnet_is_packet_traced_inline
496 (b0, pp->filter_classify_table_index, 0 /* full classify */ );
497 if (classify_filter_result)
498 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
502 if (sw_if_index_from_buffer)
503 sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
505 if (pp->pcap_sw_if_index == 0 || pp->pcap_sw_if_index == sw_if_index)
506 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
510 #ifndef CLIB_MARCH_VARIANT
513 vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node,
514 vlib_frame_t * frame)
516 vnet_main_t *vnm = vnet_get_main ();
517 vnet_hw_interface_t *hi;
518 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
519 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
521 vnet_interface_pcap_tx_trace (vm, node, frame,
522 0 /* sw_if_index_from_buffer */ );
524 if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
525 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
526 /* do_tx_offloads */ 0);
528 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
529 /* do_tx_offloads */ 1);
531 #endif /* CLIB_MARCH_VARIANT */
533 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
534 VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm,
535 vlib_node_runtime_t *
537 vlib_frame_t * frame)
539 vnet_main_t *vnm = vnet_get_main ();
540 u32 n_left_to_next, *from, *to_next;
541 u32 n_left_from, next_index;
543 vnet_interface_pcap_tx_trace (vm, node, frame,
544 1 /* sw_if_index_from_buffer */ );
546 n_left_from = frame->n_vectors;
548 from = vlib_frame_vector_args (frame);
549 next_index = node->cached_next_index;
551 while (n_left_from > 0)
553 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
555 while (n_left_from >= 4 && n_left_to_next >= 2)
557 u32 bi0, bi1, next0, next1;
558 vlib_buffer_t *b0, *b1;
559 vnet_hw_interface_t *hi0, *hi1;
561 /* Prefetch next iteration. */
562 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
563 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
574 b0 = vlib_get_buffer (vm, bi0);
575 b1 = vlib_get_buffer (vm, bi1);
578 vnet_get_sup_hw_interface (vnm,
579 vnet_buffer (b0)->sw_if_index
582 vnet_get_sup_hw_interface (vnm,
583 vnet_buffer (b1)->sw_if_index
586 next0 = hi0->output_node_next_index;
587 next1 = hi1->output_node_next_index;
589 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
590 n_left_to_next, bi0, bi1, next0,
594 while (n_left_from > 0 && n_left_to_next > 0)
598 vnet_hw_interface_t *hi0;
607 b0 = vlib_get_buffer (vm, bi0);
610 vnet_get_sup_hw_interface (vnm,
611 vnet_buffer (b0)->sw_if_index
614 next0 = hi0->output_node_next_index;
616 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
617 n_left_to_next, bi0, next0);
620 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
623 return frame->n_vectors;
626 typedef struct vnet_error_trace_t_
629 } vnet_error_trace_t;
633 format_vnet_error_trace (u8 * s, va_list * va)
635 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
636 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
637 vnet_error_trace_t *t = va_arg (*va, vnet_error_trace_t *);
639 s = format (s, "rx:%U", format_vnet_sw_if_index_name,
640 vnet_get_main (), t->sw_if_index);
646 interface_trace_buffers (vlib_main_t * vm,
647 vlib_node_runtime_t * node, vlib_frame_t * frame)
649 u32 n_left, *buffers;
651 buffers = vlib_frame_vector_args (frame);
652 n_left = frame->n_vectors;
657 vlib_buffer_t *b0, *b1;
658 vnet_error_trace_t *t0, *t1;
660 /* Prefetch next iteration. */
661 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
662 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
667 b0 = vlib_get_buffer (vm, bi0);
668 b1 = vlib_get_buffer (vm, bi1);
670 if (b0->flags & VLIB_BUFFER_IS_TRACED)
672 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
673 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
675 if (b1->flags & VLIB_BUFFER_IS_TRACED)
677 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
678 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
688 vnet_error_trace_t *t0;
692 b0 = vlib_get_buffer (vm, bi0);
694 if (b0->flags & VLIB_BUFFER_IS_TRACED)
696 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
697 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
706 VNET_ERROR_DISPOSITION_DROP,
707 VNET_ERROR_DISPOSITION_PUNT,
708 VNET_ERROR_N_DISPOSITION,
709 } vnet_error_disposition_t;
711 static_always_inline uword
712 interface_drop_punt (vlib_main_t * vm,
713 vlib_node_runtime_t * node,
714 vlib_frame_t * frame,
715 vnet_error_disposition_t disposition)
717 u32 *from, n_left, thread_index, *sw_if_index;
718 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
719 u32 sw_if_indices[VLIB_FRAME_SIZE];
720 vlib_simple_counter_main_t *cm;
721 u16 nexts[VLIB_FRAME_SIZE];
724 vnm = vnet_get_main ();
725 thread_index = vm->thread_index;
726 from = vlib_frame_vector_args (frame);
727 n_left = frame->n_vectors;
729 sw_if_index = sw_if_indices;
731 vlib_get_buffers (vm, from, bufs, n_left);
733 if (node->flags & VLIB_NODE_FLAG_TRACE)
734 interface_trace_buffers (vm, node, frame);
736 /* All going to drop regardless, this is just a counting exercise */
737 clib_memset (nexts, 0, sizeof (nexts));
739 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
740 (disposition == VNET_ERROR_DISPOSITION_PUNT
741 ? VNET_INTERFACE_COUNTER_PUNT
742 : VNET_INTERFACE_COUNTER_DROP));
744 /* collect the array of interfaces first ... */
749 /* Prefetch 8 ahead - there's not much going on in each iteration */
750 vlib_prefetch_buffer_header (b[4], LOAD);
751 vlib_prefetch_buffer_header (b[5], LOAD);
752 vlib_prefetch_buffer_header (b[6], LOAD);
753 vlib_prefetch_buffer_header (b[7], LOAD);
755 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
756 sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
757 sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
758 sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
766 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
773 /* ... then count against them in blocks */
774 n_left = frame->n_vectors;
778 vnet_sw_interface_t *sw_if0;
781 off = frame->n_vectors - n_left;
783 sw_if_index = sw_if_indices + off;
785 count = clib_count_equal_u32 (sw_if_index, n_left);
788 vlib_increment_simple_counter (cm, thread_index, sw_if_index[0], count);
790 /* Increment super-interface drop/punt counters for
792 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index[0]);
793 if (sw_if0->sup_sw_if_index != sw_if_index[0])
794 vlib_increment_simple_counter
795 (cm, thread_index, sw_if0->sup_sw_if_index, count);
798 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
800 return frame->n_vectors;
804 pcap_drop_trace (vlib_main_t * vm,
805 vnet_interface_main_t * im,
806 vnet_pcap_t * pp, vlib_frame_t * f)
809 u32 n_left = f->n_vectors;
810 vlib_buffer_t *b0, *p1;
812 i16 save_current_data;
813 u16 save_current_length;
814 vlib_error_main_t *em = &vm->error_main;
818 from = vlib_frame_vector_args (f);
822 if (PREDICT_TRUE (n_left > 1))
824 p1 = vlib_get_buffer (vm, from[1]);
825 vlib_prefetch_buffer_header (p1, LOAD);
829 b0 = vlib_get_buffer (vm, bi0);
833 /* See if we're pointedly ignoring this specific error */
834 if (im->pcap_drop_filter_hash
835 && hash_get (im->pcap_drop_filter_hash, b0->error))
838 do_trace = (pp->pcap_sw_if_index == 0) ||
839 pp->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX];
842 (do_trace == 0 && pp->filter_classify_table_index != ~0))
844 do_trace = vnet_is_packet_traced_inline
845 (b0, pp->filter_classify_table_index, 0 /* full classify */ );
848 /* Trace all drops, or drops received on a specific interface */
851 save_current_data = b0->current_data;
852 save_current_length = b0->current_length;
855 * Typically, we'll need to rewind the buffer
856 * if l2_hdr_offset is valid, make sure to rewind to the start of
857 * the L2 header. This may not be the buffer start in case we pop-ed
859 * Otherwise, rewind to buffer start and hope for the best.
861 if (b0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
863 if (b0->current_data > vnet_buffer (b0)->l2_hdr_offset)
864 vlib_buffer_advance (b0,
865 vnet_buffer (b0)->l2_hdr_offset -
868 else if (b0->current_data > 0)
869 vlib_buffer_advance (b0, (word) - b0->current_data);
872 vlib_buffer_t *last = b0;
873 u32 error_node_index;
876 /* Length of the error string */
877 int error_string_len =
878 clib_strnlen (em->error_strings_heap[b0->error], 128);
880 /* Dig up the drop node */
881 error_node_index = vm->node_main.node_by_error[b0->error];
882 n = vlib_get_node (vm, error_node_index);
884 /* Length of full drop string, w/ "nodename: " prepended */
885 drop_string_len = error_string_len + vec_len (n->name) + 2;
887 /* Find the last buffer in the chain */
888 while (last->flags & VLIB_BUFFER_NEXT_PRESENT)
889 last = vlib_get_buffer (vm, last->next_buffer);
892 * Append <nodename>: <error-string> to the capture,
893 * only if we can do that without allocating a new buffer.
895 if (PREDICT_TRUE ((last->current_data + last->current_length)
896 < (VLIB_BUFFER_DEFAULT_DATA_SIZE
899 clib_memcpy_fast (last->data + last->current_data +
900 last->current_length, n->name,
902 clib_memcpy_fast (last->data + last->current_data +
903 last->current_length + vec_len (n->name),
905 clib_memcpy_fast (last->data + last->current_data +
906 last->current_length + vec_len (n->name) +
907 2, em->error_strings_heap[b0->error],
909 last->current_length += drop_string_len;
910 b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
911 pcap_add_buffer (&pp->pcap_main, vm, bi0,
912 pp->max_bytes_per_pkt);
913 last->current_length -= drop_string_len;
914 b0->current_data = save_current_data;
915 b0->current_length = save_current_length;
921 * Didn't have space in the last buffer, here's the dropped
924 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
926 b0->current_data = save_current_data;
927 b0->current_length = save_current_length;
932 #ifndef CLIB_MARCH_VARIANT
934 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
936 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
938 if (im->pcap_drop_filter_hash == 0)
939 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
942 hash_set (im->pcap_drop_filter_hash, error_index, 1);
944 hash_unset (im->pcap_drop_filter_hash, error_index);
946 #endif /* CLIB_MARCH_VARIANT */
948 VLIB_NODE_FN (interface_drop) (vlib_main_t * vm,
949 vlib_node_runtime_t * node,
950 vlib_frame_t * frame)
952 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
953 vnet_pcap_t *pp = &vlib_global_main.pcap;
955 if (PREDICT_FALSE (pp->pcap_drop_enable))
956 pcap_drop_trace (vm, im, pp, frame);
958 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
961 VLIB_NODE_FN (interface_punt) (vlib_main_t * vm,
962 vlib_node_runtime_t * node,
963 vlib_frame_t * frame)
965 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
969 VLIB_REGISTER_NODE (interface_drop) = {
970 .name = "error-drop",
971 .vector_size = sizeof (u32),
972 .format_trace = format_vnet_error_trace,
981 VLIB_REGISTER_NODE (interface_punt) = {
982 .name = "error-punt",
983 .vector_size = sizeof (u32),
984 .format_trace = format_vnet_error_trace,
993 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node) = {
994 .name = "interface-output",
995 .vector_size = sizeof (u32),
1000 interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1001 vlib_frame_t * from_frame)
1003 vnet_main_t *vnm = vnet_get_main ();
1004 u32 last_sw_if_index = ~0;
1005 vlib_frame_t *to_frame = 0;
1006 vnet_hw_interface_t *hw = 0;
1007 u32 *from, *to_next = 0;
1010 from = vlib_frame_vector_args (from_frame);
1011 n_left_from = from_frame->n_vectors;
1012 while (n_left_from > 0)
1021 b0 = vlib_get_buffer (vm, bi0);
1022 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
1024 if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
1028 hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
1029 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1031 last_sw_if_index = sw_if_index0;
1032 hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
1033 to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
1034 to_next = vlib_frame_vector_args (to_frame);
1039 to_frame->n_vectors++;
1041 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1042 return from_frame->n_vectors;
1046 VLIB_REGISTER_NODE (interface_tx) = {
1047 .function = interface_tx_node_fn,
1048 .name = "interface-tx",
1049 .vector_size = sizeof (u32),
1056 VNET_FEATURE_ARC_INIT (interface_output, static) =
1058 .arc_name = "interface-output",
1059 .start_nodes = VNET_FEATURES (0),
1060 .last_in_arc = "interface-tx",
1061 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1064 VNET_FEATURE_INIT (span_tx, static) = {
1065 .arc_name = "interface-output",
1066 .node_name = "span-output",
1067 .runs_before = VNET_FEATURES ("interface-tx"),
1070 VNET_FEATURE_INIT (ipsec_if_tx, static) = {
1071 .arc_name = "interface-output",
1072 .node_name = "ipsec-if-output",
1073 .runs_before = VNET_FEATURES ("interface-tx"),
1076 VNET_FEATURE_INIT (interface_tx, static) = {
1077 .arc_name = "interface-output",
1078 .node_name = "interface-tx",
1083 #ifndef CLIB_MARCH_VARIANT
1085 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1089 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1092 if (hi->output_node_index == 0)
1095 next_index = vlib_node_add_next
1096 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1097 hi->output_node_index);
1098 hi->output_node_next_index = next_index;
1103 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1104 (vnet_per_buffer_interface_output_hw_interface_add_del);
1107 vnet_set_interface_output_node (vnet_main_t * vnm,
1108 u32 hw_if_index, u32 node_index)
1110 ASSERT (node_index);
1111 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1112 u32 next_index = vlib_node_add_next
1113 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
1114 hi->output_node_next_index = next_index;
1115 hi->output_node_index = node_index;
1117 #endif /* CLIB_MARCH_VARIANT */
1120 * fd.io coding-style-patch-verification: ON
1123 * eval: (c-set-style "gnu")