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/gso/gso.h>
42 #include <vnet/ip/icmp46_packet.h>
43 #include <vnet/ip/ip4.h>
44 #include <vnet/ip/ip6.h>
45 #include <vnet/udp/udp_packet.h>
46 #include <vnet/feature/feature.h>
47 #include <vnet/classify/trace_classify.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 void
163 calc_checksums (vlib_main_t * vm, vlib_buffer_t * b)
167 gso_header_offset_t gho = { 0 };
169 int is_ip4 = (b->flags & VNET_BUFFER_F_IS_IP4) != 0;
170 int is_ip6 = (b->flags & VNET_BUFFER_F_IS_IP6) != 0;
172 ASSERT (!(is_ip4 && is_ip6));
174 gho = vnet_gso_header_offset_parser (b, is_ip6);
175 th = (tcp_header_t *) (vlib_buffer_get_current (b) + gho.l4_hdr_offset);
176 uh = (udp_header_t *) (vlib_buffer_get_current (b) + gho.l4_hdr_offset);
183 (ip4_header_t *) (vlib_buffer_get_current (b) + gho.l3_hdr_offset);
184 if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
185 ip4->checksum = ip4_header_checksum (ip4);
186 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
189 th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
191 else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
192 uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
200 (ip6_header_t *) (vlib_buffer_get_current (b) + gho.l3_hdr_offset);
201 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
205 ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
207 else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
211 ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
214 b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
215 b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
216 b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
219 static_always_inline uword
220 vnet_interface_output_node_inline (vlib_main_t * vm,
221 vlib_node_runtime_t * node,
222 vlib_frame_t * frame,
224 vnet_hw_interface_t * hi,
227 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
228 vnet_sw_interface_t *si;
229 u32 n_left_to_tx, *from, *from_end, *to_tx;
230 u32 n_bytes, n_buffers, n_packets;
231 u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3;
232 u32 thread_index = vm->thread_index;
233 vnet_interface_main_t *im = &vnm->interface_main;
234 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
235 u32 current_config_index = ~0;
236 u8 arc = im->output_feature_arc_index;
237 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
239 n_buffers = frame->n_vectors;
241 if (node->flags & VLIB_NODE_FLAG_TRACE)
242 vnet_interface_output_trace (vm, node, frame, n_buffers);
244 from = vlib_frame_vector_args (frame);
245 vlib_get_buffers (vm, from, b, n_buffers);
248 return vlib_error_drop_buffers (vm, node, from,
249 /* buffer stride */ 1,
251 VNET_INTERFACE_OUTPUT_NEXT_DROP,
253 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
255 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
256 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
257 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
258 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
260 vlib_simple_counter_main_t *cm;
262 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
263 VNET_INTERFACE_COUNTER_TX_ERROR);
264 vlib_increment_simple_counter (cm, thread_index,
265 rt->sw_if_index, n_buffers);
267 return vlib_error_drop_buffers (vm, node, from,
268 /* buffer stride */ 1,
270 VNET_INTERFACE_OUTPUT_NEXT_DROP,
272 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
275 from_end = from + n_buffers;
277 /* Total byte count of all buffers. */
281 /* interface-output feature arc handling */
282 if (PREDICT_FALSE (vnet_have_features (arc, rt->sw_if_index)))
284 vnet_feature_config_main_t *fcm;
285 fcm = vnet_feature_get_config_main (arc);
286 current_config_index = vnet_get_feature_config_index (arc,
288 vnet_get_config_data (&fcm->config_main, ¤t_config_index,
292 while (from < from_end)
294 /* Get new next frame since previous incomplete frame may have less
295 than VNET_FRAME_SIZE vectors in it. */
296 vlib_get_new_next_frame (vm, node, next_index, to_tx, n_left_to_tx);
298 while (from + 8 <= from_end && n_left_to_tx >= 4)
300 u32 bi0, bi1, bi2, bi3;
301 u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
304 /* Prefetch next iteration. */
305 vlib_prefetch_buffer_header (b[4], LOAD);
306 vlib_prefetch_buffer_header (b[5], LOAD);
307 vlib_prefetch_buffer_header (b[6], LOAD);
308 vlib_prefetch_buffer_header (b[7], LOAD);
319 or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags;
325 /* Be grumpy about zero length buffers for benefit of
326 driver tx function. */
327 ASSERT (b[0]->current_length > 0);
328 ASSERT (b[1]->current_length > 0);
329 ASSERT (b[2]->current_length > 0);
330 ASSERT (b[3]->current_length > 0);
332 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
333 n_bytes_b1 = vlib_buffer_length_in_chain (vm, b[1]);
334 n_bytes_b2 = vlib_buffer_length_in_chain (vm, b[2]);
335 n_bytes_b3 = vlib_buffer_length_in_chain (vm, b[3]);
336 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
337 tx_swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
338 tx_swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
339 tx_swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
341 n_bytes += n_bytes_b0 + n_bytes_b1;
342 n_bytes += n_bytes_b2 + n_bytes_b3;
345 if (PREDICT_FALSE (current_config_index != ~0))
347 vnet_buffer (b[0])->feature_arc_index = arc;
348 vnet_buffer (b[1])->feature_arc_index = arc;
349 vnet_buffer (b[2])->feature_arc_index = arc;
350 vnet_buffer (b[3])->feature_arc_index = arc;
351 b[0]->current_config_index = current_config_index;
352 b[1]->current_config_index = current_config_index;
353 b[2]->current_config_index = current_config_index;
354 b[3]->current_config_index = current_config_index;
357 /* update vlan subif tx counts, if required */
358 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
360 vlib_increment_combined_counter (im->combined_sw_if_counters +
361 VNET_INTERFACE_COUNTER_TX,
362 thread_index, tx_swif0, 1,
366 if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index))
369 vlib_increment_combined_counter (im->combined_sw_if_counters +
370 VNET_INTERFACE_COUNTER_TX,
371 thread_index, tx_swif1, 1,
375 if (PREDICT_FALSE (tx_swif2 != rt->sw_if_index))
378 vlib_increment_combined_counter (im->combined_sw_if_counters +
379 VNET_INTERFACE_COUNTER_TX,
380 thread_index, tx_swif2, 1,
383 if (PREDICT_FALSE (tx_swif3 != rt->sw_if_index))
386 vlib_increment_combined_counter (im->combined_sw_if_counters +
387 VNET_INTERFACE_COUNTER_TX,
388 thread_index, tx_swif3, 1,
395 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
396 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
397 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
399 calc_checksums (vm, b[0]);
400 calc_checksums (vm, b[1]);
401 calc_checksums (vm, b[2]);
402 calc_checksums (vm, b[3]);
409 while (from + 1 <= from_end && n_left_to_tx >= 1)
420 /* Be grumpy about zero length buffers for benefit of
421 driver tx function. */
422 ASSERT (b[0]->current_length > 0);
424 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
425 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
426 n_bytes += n_bytes_b0;
429 if (PREDICT_FALSE (current_config_index != ~0))
431 vnet_buffer (b[0])->feature_arc_index = arc;
432 b[0]->current_config_index = current_config_index;
435 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
438 vlib_increment_combined_counter (im->combined_sw_if_counters +
439 VNET_INTERFACE_COUNTER_TX,
440 thread_index, tx_swif0, 1,
447 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
448 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
449 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
450 calc_checksums (vm, b[0]);
455 vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
458 /* Update main interface stats. */
459 vlib_increment_combined_counter (im->combined_sw_if_counters
460 + VNET_INTERFACE_COUNTER_TX,
462 rt->sw_if_index, n_packets, n_bytes);
465 #endif /* CLIB_MARCH_VARIANT */
467 static_always_inline void vnet_interface_pcap_tx_trace
468 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame,
469 int sw_if_index_from_buffer)
471 u32 n_left_from, *from;
473 vnet_pcap_t *pp = &vlib_global_main.pcap;
475 if (PREDICT_TRUE (pp->pcap_tx_enable == 0))
478 if (sw_if_index_from_buffer == 0)
480 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
481 sw_if_index = rt->sw_if_index;
486 n_left_from = frame->n_vectors;
487 from = vlib_frame_vector_args (frame);
489 while (n_left_from > 0)
491 int classify_filter_result;
493 vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
497 if (pp->filter_classify_table_index != ~0)
499 classify_filter_result =
500 vnet_is_packet_traced_inline
501 (b0, pp->filter_classify_table_index, 0 /* full classify */ );
502 if (classify_filter_result)
503 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
507 if (sw_if_index_from_buffer)
508 sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
510 if (pp->pcap_sw_if_index == 0 || pp->pcap_sw_if_index == sw_if_index)
512 vnet_main_t *vnm = vnet_get_main ();
513 vnet_hw_interface_t *hi =
514 vnet_get_sup_hw_interface (vnm, sw_if_index);
515 /* Capture pkt if not filtered, or if filter hits */
516 if (hi->trace_classify_table_index == ~0 ||
517 vnet_is_packet_traced_inline
518 (b0, hi->trace_classify_table_index, 0 /* full classify */ ))
519 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
524 #ifndef CLIB_MARCH_VARIANT
527 vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node,
528 vlib_frame_t * frame)
530 vnet_main_t *vnm = vnet_get_main ();
531 vnet_hw_interface_t *hi;
532 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
533 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
535 vnet_interface_pcap_tx_trace (vm, node, frame,
536 0 /* sw_if_index_from_buffer */ );
538 if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
539 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
540 /* do_tx_offloads */ 0);
542 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
543 /* do_tx_offloads */ 1);
545 #endif /* CLIB_MARCH_VARIANT */
547 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
548 VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm,
549 vlib_node_runtime_t *
551 vlib_frame_t * frame)
553 vnet_main_t *vnm = vnet_get_main ();
554 u32 n_left_to_next, *from, *to_next;
555 u32 n_left_from, next_index;
557 vnet_interface_pcap_tx_trace (vm, node, frame,
558 1 /* sw_if_index_from_buffer */ );
560 n_left_from = frame->n_vectors;
562 from = vlib_frame_vector_args (frame);
563 next_index = node->cached_next_index;
565 while (n_left_from > 0)
567 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
569 while (n_left_from >= 4 && n_left_to_next >= 2)
571 u32 bi0, bi1, next0, next1;
572 vlib_buffer_t *b0, *b1;
573 vnet_hw_interface_t *hi0, *hi1;
575 /* Prefetch next iteration. */
576 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
577 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
588 b0 = vlib_get_buffer (vm, bi0);
589 b1 = vlib_get_buffer (vm, bi1);
592 vnet_get_sup_hw_interface (vnm,
593 vnet_buffer (b0)->sw_if_index
596 vnet_get_sup_hw_interface (vnm,
597 vnet_buffer (b1)->sw_if_index
600 next0 = hi0->output_node_next_index;
601 next1 = hi1->output_node_next_index;
603 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
604 n_left_to_next, bi0, bi1, next0,
608 while (n_left_from > 0 && n_left_to_next > 0)
612 vnet_hw_interface_t *hi0;
621 b0 = vlib_get_buffer (vm, bi0);
624 vnet_get_sup_hw_interface (vnm,
625 vnet_buffer (b0)->sw_if_index
628 next0 = hi0->output_node_next_index;
630 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
631 n_left_to_next, bi0, next0);
634 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
637 return frame->n_vectors;
640 typedef struct vnet_error_trace_t_
643 } vnet_error_trace_t;
647 format_vnet_error_trace (u8 * s, va_list * va)
649 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
650 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
651 vnet_error_trace_t *t = va_arg (*va, vnet_error_trace_t *);
653 s = format (s, "rx:%U", format_vnet_sw_if_index_name,
654 vnet_get_main (), t->sw_if_index);
660 interface_trace_buffers (vlib_main_t * vm,
661 vlib_node_runtime_t * node, vlib_frame_t * frame)
663 u32 n_left, *buffers;
665 buffers = vlib_frame_vector_args (frame);
666 n_left = frame->n_vectors;
671 vlib_buffer_t *b0, *b1;
672 vnet_error_trace_t *t0, *t1;
674 /* Prefetch next iteration. */
675 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
676 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
681 b0 = vlib_get_buffer (vm, bi0);
682 b1 = vlib_get_buffer (vm, bi1);
684 if (b0->flags & VLIB_BUFFER_IS_TRACED)
686 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
687 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
689 if (b1->flags & VLIB_BUFFER_IS_TRACED)
691 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
692 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
702 vnet_error_trace_t *t0;
706 b0 = vlib_get_buffer (vm, bi0);
708 if (b0->flags & VLIB_BUFFER_IS_TRACED)
710 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
711 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
720 VNET_ERROR_DISPOSITION_DROP,
721 VNET_ERROR_DISPOSITION_PUNT,
722 VNET_ERROR_N_DISPOSITION,
723 } vnet_error_disposition_t;
725 static_always_inline uword
726 interface_drop_punt (vlib_main_t * vm,
727 vlib_node_runtime_t * node,
728 vlib_frame_t * frame,
729 vnet_error_disposition_t disposition)
731 u32 *from, n_left, thread_index, *sw_if_index;
732 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
733 u32 sw_if_indices[VLIB_FRAME_SIZE];
734 vlib_simple_counter_main_t *cm;
735 u16 nexts[VLIB_FRAME_SIZE];
738 vnm = vnet_get_main ();
739 thread_index = vm->thread_index;
740 from = vlib_frame_vector_args (frame);
741 n_left = frame->n_vectors;
743 sw_if_index = sw_if_indices;
745 vlib_get_buffers (vm, from, bufs, n_left);
747 if (node->flags & VLIB_NODE_FLAG_TRACE)
748 interface_trace_buffers (vm, node, frame);
750 /* All going to drop regardless, this is just a counting exercise */
751 clib_memset (nexts, 0, sizeof (nexts));
753 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
754 (disposition == VNET_ERROR_DISPOSITION_PUNT
755 ? VNET_INTERFACE_COUNTER_PUNT
756 : VNET_INTERFACE_COUNTER_DROP));
758 /* collect the array of interfaces first ... */
763 /* Prefetch 8 ahead - there's not much going on in each iteration */
764 vlib_prefetch_buffer_header (b[4], LOAD);
765 vlib_prefetch_buffer_header (b[5], LOAD);
766 vlib_prefetch_buffer_header (b[6], LOAD);
767 vlib_prefetch_buffer_header (b[7], LOAD);
769 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
770 sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
771 sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
772 sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
780 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
787 /* ... then count against them in blocks */
788 n_left = frame->n_vectors;
792 vnet_sw_interface_t *sw_if0;
795 off = frame->n_vectors - n_left;
797 sw_if_index = sw_if_indices + off;
799 count = clib_count_equal_u32 (sw_if_index, n_left);
802 vlib_increment_simple_counter (cm, thread_index, sw_if_index[0], count);
804 /* Increment super-interface drop/punt counters for
806 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index[0]);
807 if (sw_if0->sup_sw_if_index != sw_if_index[0])
808 vlib_increment_simple_counter
809 (cm, thread_index, sw_if0->sup_sw_if_index, count);
812 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
814 return frame->n_vectors;
818 pcap_drop_trace (vlib_main_t * vm,
819 vnet_interface_main_t * im,
820 vnet_pcap_t * pp, vlib_frame_t * f)
823 u32 n_left = f->n_vectors;
824 vlib_buffer_t *b0, *p1;
826 i16 save_current_data;
827 u16 save_current_length;
828 vlib_error_main_t *em = &vm->error_main;
832 from = vlib_frame_vector_args (f);
836 if (PREDICT_TRUE (n_left > 1))
838 p1 = vlib_get_buffer (vm, from[1]);
839 vlib_prefetch_buffer_header (p1, LOAD);
843 b0 = vlib_get_buffer (vm, bi0);
847 /* See if we're pointedly ignoring this specific error */
848 if (im->pcap_drop_filter_hash
849 && hash_get (im->pcap_drop_filter_hash, b0->error))
852 do_trace = (pp->pcap_sw_if_index == 0) ||
853 pp->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX];
856 (do_trace == 0 && pp->filter_classify_table_index != ~0))
858 do_trace = vnet_is_packet_traced_inline
859 (b0, pp->filter_classify_table_index, 0 /* full classify */ );
862 /* Trace all drops, or drops received on a specific interface */
865 save_current_data = b0->current_data;
866 save_current_length = b0->current_length;
869 * Typically, we'll need to rewind the buffer
870 * if l2_hdr_offset is valid, make sure to rewind to the start of
871 * the L2 header. This may not be the buffer start in case we pop-ed
873 * Otherwise, rewind to buffer start and hope for the best.
875 if (b0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
877 if (b0->current_data > vnet_buffer (b0)->l2_hdr_offset)
878 vlib_buffer_advance (b0,
879 vnet_buffer (b0)->l2_hdr_offset -
882 else if (b0->current_data > 0)
883 vlib_buffer_advance (b0, (word) - b0->current_data);
886 vlib_buffer_t *last = b0;
887 u32 error_node_index;
890 /* Length of the error string */
891 int error_string_len =
892 clib_strnlen (em->error_strings_heap[b0->error], 128);
894 /* Dig up the drop node */
895 error_node_index = vm->node_main.node_by_error[b0->error];
896 n = vlib_get_node (vm, error_node_index);
898 /* Length of full drop string, w/ "nodename: " prepended */
899 drop_string_len = error_string_len + vec_len (n->name) + 2;
901 /* Find the last buffer in the chain */
902 while (last->flags & VLIB_BUFFER_NEXT_PRESENT)
903 last = vlib_get_buffer (vm, last->next_buffer);
906 * Append <nodename>: <error-string> to the capture,
907 * only if we can do that without allocating a new buffer.
909 if (PREDICT_TRUE ((last->current_data + last->current_length)
910 < (VLIB_BUFFER_DEFAULT_DATA_SIZE
913 clib_memcpy_fast (last->data + last->current_data +
914 last->current_length, n->name,
916 clib_memcpy_fast (last->data + last->current_data +
917 last->current_length + vec_len (n->name),
919 clib_memcpy_fast (last->data + last->current_data +
920 last->current_length + vec_len (n->name) +
921 2, em->error_strings_heap[b0->error],
923 last->current_length += drop_string_len;
924 b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
925 pcap_add_buffer (&pp->pcap_main, vm, bi0,
926 pp->max_bytes_per_pkt);
927 last->current_length -= drop_string_len;
928 b0->current_data = save_current_data;
929 b0->current_length = save_current_length;
935 * Didn't have space in the last buffer, here's the dropped
938 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
940 b0->current_data = save_current_data;
941 b0->current_length = save_current_length;
946 #ifndef CLIB_MARCH_VARIANT
948 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
950 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
952 if (im->pcap_drop_filter_hash == 0)
953 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
956 hash_set (im->pcap_drop_filter_hash, error_index, 1);
958 hash_unset (im->pcap_drop_filter_hash, error_index);
960 #endif /* CLIB_MARCH_VARIANT */
962 VLIB_NODE_FN (interface_drop) (vlib_main_t * vm,
963 vlib_node_runtime_t * node,
964 vlib_frame_t * frame)
966 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
967 vnet_pcap_t *pp = &vlib_global_main.pcap;
969 if (PREDICT_FALSE (pp->pcap_drop_enable))
970 pcap_drop_trace (vm, im, pp, frame);
972 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
975 VLIB_NODE_FN (interface_punt) (vlib_main_t * vm,
976 vlib_node_runtime_t * node,
977 vlib_frame_t * frame)
979 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
983 VLIB_REGISTER_NODE (interface_drop) = {
984 .name = "error-drop",
985 .vector_size = sizeof (u32),
986 .format_trace = format_vnet_error_trace,
995 VLIB_REGISTER_NODE (interface_punt) = {
996 .name = "error-punt",
997 .vector_size = sizeof (u32),
998 .format_trace = format_vnet_error_trace,
1007 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node) = {
1008 .name = "interface-output",
1009 .vector_size = sizeof (u32),
1014 interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1015 vlib_frame_t * from_frame)
1017 vnet_main_t *vnm = vnet_get_main ();
1018 u32 last_sw_if_index = ~0;
1019 vlib_frame_t *to_frame = 0;
1020 vnet_hw_interface_t *hw = 0;
1021 u32 *from, *to_next = 0;
1024 from = vlib_frame_vector_args (from_frame);
1025 n_left_from = from_frame->n_vectors;
1026 while (n_left_from > 0)
1035 b0 = vlib_get_buffer (vm, bi0);
1036 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
1038 if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
1042 hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
1043 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1045 last_sw_if_index = sw_if_index0;
1046 hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
1047 to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
1048 to_next = vlib_frame_vector_args (to_frame);
1053 to_frame->n_vectors++;
1055 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1056 return from_frame->n_vectors;
1060 VLIB_REGISTER_NODE (interface_tx) = {
1061 .function = interface_tx_node_fn,
1062 .name = "interface-tx",
1063 .vector_size = sizeof (u32),
1070 VNET_FEATURE_ARC_INIT (interface_output, static) =
1072 .arc_name = "interface-output",
1073 .start_nodes = VNET_FEATURES (0),
1074 .last_in_arc = "interface-tx",
1075 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1078 VNET_FEATURE_INIT (span_tx, static) = {
1079 .arc_name = "interface-output",
1080 .node_name = "span-output",
1081 .runs_before = VNET_FEATURES ("interface-tx"),
1084 VNET_FEATURE_INIT (ipsec_if_tx, static) = {
1085 .arc_name = "interface-output",
1086 .node_name = "ipsec-if-output",
1087 .runs_before = VNET_FEATURES ("interface-tx"),
1090 VNET_FEATURE_INIT (interface_tx, static) = {
1091 .arc_name = "interface-output",
1092 .node_name = "interface-tx",
1097 #ifndef CLIB_MARCH_VARIANT
1099 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1103 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1106 if (hi->output_node_index == 0)
1109 next_index = vlib_node_add_next
1110 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1111 hi->output_node_index);
1112 hi->output_node_next_index = next_index;
1117 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1118 (vnet_per_buffer_interface_output_hw_interface_add_del);
1121 vnet_set_interface_output_node (vnet_main_t * vnm,
1122 u32 hw_if_index, u32 node_index)
1124 ASSERT (node_index);
1125 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1126 u32 next_index = vlib_node_add_next
1127 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
1128 hi->output_node_next_index = next_index;
1129 hi->output_node_index = node_index;
1131 #endif /* CLIB_MARCH_VARIANT */
1134 * fd.io coding-style-patch-verification: ON
1137 * eval: (c-set-style "gnu")