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/ethernet/packet.h>
43 #include <vnet/ip/format.h>
44 #include <vnet/ip/ip4.h>
45 #include <vnet/ip/ip6.h>
46 #include <vnet/udp/udp_packet.h>
47 #include <vnet/feature/feature.h>
48 #include <vnet/classify/pcap_classify.h>
49 #include <vnet/interface_output.h>
55 u8 data[128 - 2 * sizeof (u32)];
57 interface_output_trace_t;
59 #ifndef CLIB_MARCH_VARIANT
61 format_vnet_interface_output_trace (u8 * s, va_list * va)
63 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
64 vlib_node_t *node = va_arg (*va, vlib_node_t *);
65 interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
66 vnet_main_t *vnm = vnet_get_main ();
67 vnet_sw_interface_t *si;
70 if (t->sw_if_index != (u32) ~ 0)
72 indent = format_get_indent (s);
74 if (pool_is_free_index
75 (vnm->interface_main.sw_interfaces, t->sw_if_index))
77 /* the interface may have been deleted by the time the trace is printed */
78 s = format (s, "sw_if_index: %d ", t->sw_if_index);
82 si = vnet_get_sw_interface (vnm, t->sw_if_index);
84 format (s, "%U ", format_vnet_sw_interface_name, vnm, si,
88 format (s, "\n%U%U", format_white_space, indent,
89 node->format_buffer ? node->format_buffer : format_hex_bytes,
90 t->data, sizeof (t->data));
94 #endif /* CLIB_MARCH_VARIANT */
97 vnet_interface_output_trace (vlib_main_t * vm,
98 vlib_node_runtime_t * node,
99 vlib_frame_t * frame, uword n_buffers)
104 from = vlib_frame_vector_args (frame);
109 vlib_buffer_t *b0, *b1;
110 interface_output_trace_t *t0, *t1;
112 /* Prefetch next iteration. */
113 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
114 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
119 b0 = vlib_get_buffer (vm, bi0);
120 b1 = vlib_get_buffer (vm, bi1);
122 if (b0->flags & VLIB_BUFFER_IS_TRACED)
124 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
125 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
126 t0->flags = b0->flags;
127 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
130 if (b1->flags & VLIB_BUFFER_IS_TRACED)
132 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
133 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
134 t1->flags = b1->flags;
135 clib_memcpy_fast (t1->data, vlib_buffer_get_current (b1),
146 interface_output_trace_t *t0;
150 b0 = vlib_get_buffer (vm, bi0);
152 if (b0->flags & VLIB_BUFFER_IS_TRACED)
154 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
155 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
156 t0->flags = b0->flags;
157 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
165 static_always_inline void
166 vnet_interface_output_handle_offload (vlib_main_t *vm, vlib_buffer_t *b)
168 vnet_calc_checksums_inline (vm, b, b->flags & VNET_BUFFER_F_IS_IP4,
169 b->flags & VNET_BUFFER_F_IS_IP6);
172 static_always_inline uword
173 vnet_interface_output_node_inline (vlib_main_t *vm, u32 sw_if_index,
174 vlib_combined_counter_main_t *ccm,
175 vlib_buffer_t **b, u32 config_index, u8 arc,
176 u32 n_left, int do_tx_offloads,
180 u32 n_bytes0, n_bytes1, n_bytes2, n_bytes3;
181 u32 ti = vm->thread_index;
187 /* Prefetch next iteration. */
188 vlib_prefetch_buffer_header (b[4], LOAD);
189 vlib_prefetch_buffer_header (b[5], LOAD);
190 vlib_prefetch_buffer_header (b[6], LOAD);
191 vlib_prefetch_buffer_header (b[7], LOAD);
194 or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags;
196 /* Be grumpy about zero length buffers for benefit of
197 driver tx function. */
198 ASSERT (b[0]->current_length > 0);
199 ASSERT (b[1]->current_length > 0);
200 ASSERT (b[2]->current_length > 0);
201 ASSERT (b[3]->current_length > 0);
203 n_bytes += n_bytes0 = vlib_buffer_length_in_chain (vm, b[0]);
204 n_bytes += n_bytes1 = vlib_buffer_length_in_chain (vm, b[1]);
205 n_bytes += n_bytes2 = vlib_buffer_length_in_chain (vm, b[2]);
206 n_bytes += n_bytes3 = vlib_buffer_length_in_chain (vm, b[3]);
210 u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
211 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
212 tx_swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
213 tx_swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
214 tx_swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
216 /* update vlan subif tx counts, if required */
217 if (PREDICT_FALSE (tx_swif0 != sw_if_index))
218 vlib_increment_combined_counter (ccm, ti, tx_swif0, 1, n_bytes0);
220 if (PREDICT_FALSE (tx_swif1 != sw_if_index))
221 vlib_increment_combined_counter (ccm, ti, tx_swif1, 1, n_bytes1);
223 if (PREDICT_FALSE (tx_swif2 != sw_if_index))
224 vlib_increment_combined_counter (ccm, ti, tx_swif2, 1, n_bytes2);
226 if (PREDICT_FALSE (tx_swif3 != sw_if_index))
227 vlib_increment_combined_counter (ccm, ti, tx_swif3, 1, n_bytes3);
229 if (PREDICT_FALSE (config_index != ~0))
231 vnet_buffer (b[0])->feature_arc_index = arc;
232 b[0]->current_config_index = config_index;
233 vnet_buffer (b[1])->feature_arc_index = arc;
234 b[1]->current_config_index = config_index;
235 vnet_buffer (b[2])->feature_arc_index = arc;
236 b[2]->current_config_index = config_index;
237 vnet_buffer (b[3])->feature_arc_index = arc;
238 b[3]->current_config_index = config_index;
242 if (do_tx_offloads && (or_flags & VNET_BUFFER_F_OFFLOAD))
244 vnet_interface_output_handle_offload (vm, b[0]);
245 vnet_interface_output_handle_offload (vm, b[1]);
246 vnet_interface_output_handle_offload (vm, b[2]);
247 vnet_interface_output_handle_offload (vm, b[3]);
256 /* Be grumpy about zero length buffers for benefit of
257 driver tx function. */
258 ASSERT (b[0]->current_length > 0);
260 n_bytes += n_bytes0 = vlib_buffer_length_in_chain (vm, b[0]);
264 u32 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
266 if (PREDICT_FALSE (config_index != ~0))
268 vnet_buffer (b[0])->feature_arc_index = arc;
269 b[0]->current_config_index = config_index;
272 if (PREDICT_FALSE (tx_swif0 != sw_if_index))
273 vlib_increment_combined_counter (ccm, ti, tx_swif0, 1, n_bytes0);
277 vnet_interface_output_handle_offload (vm, b[0]);
286 static_always_inline void vnet_interface_pcap_tx_trace
287 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame,
288 int sw_if_index_from_buffer)
290 vnet_main_t *vnm = vnet_get_main ();
291 u32 n_left_from, *from;
293 vnet_pcap_t *pp = &vnm->pcap;
295 if (PREDICT_TRUE (pp->pcap_tx_enable == 0))
298 if (sw_if_index_from_buffer == 0)
300 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
301 sw_if_index = rt->sw_if_index;
306 n_left_from = frame->n_vectors;
307 from = vlib_frame_vector_args (frame);
309 while (n_left_from > 0)
312 vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
316 if (sw_if_index_from_buffer)
317 sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
319 if (vnet_is_packet_pcaped (pp, b0, sw_if_index))
320 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
324 VLIB_NODE_FN (vnet_interface_output_node)
325 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
327 vnet_main_t *vnm = vnet_get_main ();
328 vnet_interface_main_t *im = &vnm->interface_main;
329 vlib_combined_counter_main_t *ccm;
330 vnet_hw_interface_t *hi;
331 vnet_sw_interface_t *si;
332 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
333 vlib_buffer_t *bufs[VLIB_FRAME_SIZE];
334 u32 n_bytes, n_buffers = frame->n_vectors;
335 u32 config_index = ~0;
336 u32 sw_if_index = rt->sw_if_index;
337 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
338 u32 ti = vm->thread_index;
339 u8 arc = im->output_feature_arc_index;
340 int arc_or_subif = 0;
341 int do_tx_offloads = 0;
344 if (node->flags & VLIB_NODE_FLAG_TRACE)
345 vnet_interface_output_trace (vm, node, frame, n_buffers);
347 from = vlib_frame_vector_args (frame);
350 return vlib_error_drop_buffers (
352 /* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP,
353 node->node_index, VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
355 vnet_interface_pcap_tx_trace (vm, node, frame,
356 0 /* sw_if_index_from_buffer */ );
358 vlib_get_buffers (vm, from, bufs, n_buffers);
360 si = vnet_get_sw_interface (vnm, sw_if_index);
361 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
363 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
364 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
366 vlib_simple_counter_main_t *cm;
368 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
369 VNET_INTERFACE_COUNTER_TX_ERROR);
370 vlib_increment_simple_counter (cm, ti, sw_if_index, n_buffers);
372 return vlib_error_drop_buffers (
374 /* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP,
375 node->node_index, VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
378 /* interface-output feature arc handling */
379 if (PREDICT_FALSE (vnet_have_features (arc, sw_if_index)))
381 vnet_feature_config_main_t *fcm;
382 fcm = vnet_feature_get_config_main (arc);
383 config_index = vnet_get_feature_config_index (arc, sw_if_index);
384 vnet_get_config_data (&fcm->config_main, &config_index, &next_index, 0);
387 else if (hash_elts (hi->sub_interface_sw_if_index_by_id))
390 ccm = im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX;
392 if ((hi->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TX_CKSUM) == 0)
395 if (do_tx_offloads == 0 && arc_or_subif == 0)
396 n_bytes = vnet_interface_output_node_inline (
397 vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 0, 0);
398 else if (do_tx_offloads == 0 && arc_or_subif == 1)
399 n_bytes = vnet_interface_output_node_inline (
400 vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 0, 1);
401 else if (do_tx_offloads == 1 && arc_or_subif == 0)
402 n_bytes = vnet_interface_output_node_inline (
403 vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 1, 0);
405 n_bytes = vnet_interface_output_node_inline (
406 vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 1, 1);
408 vlib_buffer_enqueue_to_single_next (vm, node, vlib_frame_vector_args (frame),
409 next_index, frame->n_vectors);
411 /* Update main interface stats. */
412 vlib_increment_combined_counter (ccm, ti, sw_if_index, n_buffers, n_bytes);
416 VLIB_REGISTER_NODE (vnet_interface_output_node) = {
417 .name = "interface-output-template",
418 .vector_size = sizeof (u32),
421 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
422 VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm,
423 vlib_node_runtime_t *
425 vlib_frame_t * frame)
427 vnet_main_t *vnm = vnet_get_main ();
428 u32 n_left_to_next, *from, *to_next;
429 u32 n_left_from, next_index;
431 vnet_interface_pcap_tx_trace (vm, node, frame,
432 1 /* sw_if_index_from_buffer */ );
434 n_left_from = frame->n_vectors;
436 from = vlib_frame_vector_args (frame);
437 next_index = node->cached_next_index;
439 while (n_left_from > 0)
441 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
443 while (n_left_from >= 4 && n_left_to_next >= 2)
445 u32 bi0, bi1, next0, next1;
446 vlib_buffer_t *b0, *b1;
447 vnet_hw_interface_t *hi0, *hi1;
449 /* Prefetch next iteration. */
450 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
451 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
462 b0 = vlib_get_buffer (vm, bi0);
463 b1 = vlib_get_buffer (vm, bi1);
466 vnet_get_sup_hw_interface (vnm,
467 vnet_buffer (b0)->sw_if_index
470 vnet_get_sup_hw_interface (vnm,
471 vnet_buffer (b1)->sw_if_index
474 next0 = hi0->output_node_next_index;
475 next1 = hi1->output_node_next_index;
477 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
478 n_left_to_next, bi0, bi1, next0,
482 while (n_left_from > 0 && n_left_to_next > 0)
486 vnet_hw_interface_t *hi0;
495 b0 = vlib_get_buffer (vm, bi0);
498 vnet_get_sup_hw_interface (vnm,
499 vnet_buffer (b0)->sw_if_index
502 next0 = hi0->output_node_next_index;
504 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
505 n_left_to_next, bi0, next0);
508 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
511 return frame->n_vectors;
514 typedef struct vnet_error_trace_t_
521 ip46_address_t src, dst;
522 } vnet_error_trace_t;
525 format_vnet_error_trace (u8 * s, va_list * va)
527 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
528 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
529 vnet_error_trace_t *t = va_arg (*va, vnet_error_trace_t *);
531 /* Normal, non-catchup trace */
532 if (t->details_valid == 0)
534 s = format (s, "rx:%U", format_vnet_sw_if_index_name,
535 vnet_get_main (), t->sw_if_index);
537 else if (t->details_valid == 1)
539 /* The trace capture code didn't understant the mactype */
540 s = format (s, "mactype 0x%4x (not decoded)", t->mactype);
542 else if (t->details_valid == 2)
544 /* Dump the src/dst addresses */
546 s = format (s, "IP4: %U -> %U",
547 format_ip4_address, &t->src.ip4,
548 format_ip4_address, &t->dst.ip4);
550 s = format (s, "IP6: %U -> %U",
551 format_ip6_address, &t->src.ip6,
552 format_ip6_address, &t->dst.ip6);
558 interface_trace_buffers (vlib_main_t * vm,
559 vlib_node_runtime_t * node, vlib_frame_t * frame)
561 u32 n_left, *buffers;
563 buffers = vlib_frame_vector_args (frame);
564 n_left = frame->n_vectors;
569 vlib_buffer_t *b0, *b1;
570 vnet_error_trace_t *t0, *t1;
572 /* Prefetch next iteration. */
573 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
574 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
579 b0 = vlib_get_buffer (vm, bi0);
580 b1 = vlib_get_buffer (vm, bi1);
582 if (b0->flags & VLIB_BUFFER_IS_TRACED)
584 t0 = vlib_add_trace (vm, node, b0,
585 STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
586 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
587 t0->details_valid = 0;
589 if (b1->flags & VLIB_BUFFER_IS_TRACED)
591 t1 = vlib_add_trace (vm, node, b1,
592 STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
593 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
594 t1->details_valid = 0;
604 vnet_error_trace_t *t0;
608 b0 = vlib_get_buffer (vm, bi0);
610 if (b0->flags & VLIB_BUFFER_IS_TRACED)
612 t0 = vlib_add_trace (vm, node, b0,
613 STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
614 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
615 t0->details_valid = 0;
624 VNET_ERROR_DISPOSITION_DROP,
625 VNET_ERROR_DISPOSITION_PUNT,
626 VNET_ERROR_N_DISPOSITION,
627 } vnet_error_disposition_t;
630 drop_catchup_trace (vlib_main_t * vm,
631 vlib_node_runtime_t * node, vlib_buffer_t * b)
633 /* Can we safely rewind the buffer? If not, fagedaboudit */
634 if (b->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
636 vnet_error_trace_t *t;
639 ethernet_header_t *eh;
642 t = vlib_add_trace (vm, node, b, sizeof (*t));
643 delta = vnet_buffer (b)->l2_hdr_offset - b->current_data;
644 vlib_buffer_advance (b, delta);
646 eh = vlib_buffer_get_current (b);
648 t->mactype = clib_net_to_host_u16 (eh->type);
649 t->details_valid = 1;
652 case ETHERNET_TYPE_IP4:
653 ip4 = (void *) (eh + 1);
654 t->details_valid = 2;
656 t->src.ip4.as_u32 = ip4->src_address.as_u32;
657 t->dst.ip4.as_u32 = ip4->dst_address.as_u32;
660 case ETHERNET_TYPE_IP6:
661 ip6 = (void *) (eh + 1);
662 t->details_valid = 2;
664 clib_memcpy_fast (t->src.as_u8, ip6->src_address.as_u8,
665 sizeof (ip6_address_t));
666 clib_memcpy_fast (t->dst.as_u8, ip6->dst_address.as_u8,
667 sizeof (ip6_address_t));
671 /* Dunno, do nothing, leave details_valid alone */
674 /* Restore current data (probably unnecessary) */
675 vlib_buffer_advance (b, -delta);
679 static_always_inline uword
680 interface_drop_punt (vlib_main_t * vm,
681 vlib_node_runtime_t * node,
682 vlib_frame_t * frame,
683 vnet_error_disposition_t disposition)
685 u32 *from, n_left, thread_index, *sw_if_index;
686 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
687 u32 sw_if_indices[VLIB_FRAME_SIZE];
688 vlib_simple_counter_main_t *cm;
689 u16 nexts[VLIB_FRAME_SIZE];
693 vnm = vnet_get_main ();
694 thread_index = vm->thread_index;
695 from = vlib_frame_vector_args (frame);
696 n_left = frame->n_vectors;
698 sw_if_index = sw_if_indices;
700 vlib_get_buffers (vm, from, bufs, n_left);
702 /* "trace add error-drop NNN?" */
703 if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node))))
705 /* If pkts aren't otherwise traced... */
706 if ((node->flags & VLIB_NODE_FLAG_TRACE) == 0)
708 /* Trace them from here */
709 node->flags |= VLIB_NODE_FLAG_TRACE;
710 while (n_trace && n_left)
713 (vlib_trace_buffer (vm, node, 0 /* next_index */ , b[0],
714 0 /* follow chain */ )))
717 * Here we have a wireshark dissector problem.
718 * Packets may be well-formed, or not. We
719 * must not blow chunks in any case.
721 * Try to produce trace records which will help
722 * folks understand what's going on.
724 drop_catchup_trace (vm, node, b[0]);
732 vlib_set_trace_count (vm, node, n_trace);
734 n_left = frame->n_vectors;
737 if (node->flags & VLIB_NODE_FLAG_TRACE)
738 interface_trace_buffers (vm, node, frame);
740 /* All going to drop regardless, this is just a counting exercise */
741 clib_memset (nexts, 0, sizeof (nexts));
743 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
744 (disposition == VNET_ERROR_DISPOSITION_PUNT
745 ? VNET_INTERFACE_COUNTER_PUNT
746 : VNET_INTERFACE_COUNTER_DROP));
748 /* collect the array of interfaces first ... */
753 /* Prefetch 8 ahead - there's not much going on in each iteration */
754 vlib_prefetch_buffer_header (b[4], LOAD);
755 vlib_prefetch_buffer_header (b[5], LOAD);
756 vlib_prefetch_buffer_header (b[6], LOAD);
757 vlib_prefetch_buffer_header (b[7], LOAD);
759 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
760 sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
761 sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
762 sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
770 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
777 /* ... then count against them in blocks */
778 n_left = frame->n_vectors;
782 vnet_sw_interface_t *sw_if0;
785 off = frame->n_vectors - n_left;
787 sw_if_index = sw_if_indices + off;
789 count = clib_count_equal_u32 (sw_if_index, n_left);
792 vlib_increment_simple_counter (cm, thread_index, sw_if_index[0], count);
794 /* Increment super-interface drop/punt counters for
796 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index[0]);
797 if (sw_if0->sup_sw_if_index != sw_if_index[0])
798 vlib_increment_simple_counter
799 (cm, thread_index, sw_if0->sup_sw_if_index, count);
802 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
804 return frame->n_vectors;
808 pcap_drop_trace (vlib_main_t * vm,
809 vnet_interface_main_t * im,
810 vnet_pcap_t * pp, vlib_frame_t * f)
813 u32 n_left = f->n_vectors;
814 vlib_buffer_t *b0, *p1;
816 i16 save_current_data;
817 u16 save_current_length;
818 vlib_error_main_t *em = &vm->error_main;
820 from = vlib_frame_vector_args (f);
824 if (PREDICT_TRUE (n_left > 1))
826 p1 = vlib_get_buffer (vm, from[1]);
827 vlib_prefetch_buffer_header (p1, LOAD);
831 b0 = vlib_get_buffer (vm, bi0);
835 /* See if we're pointedly ignoring this specific error */
836 if (im->pcap_drop_filter_hash
837 && hash_get (im->pcap_drop_filter_hash, b0->error))
840 if (!vnet_is_packet_pcaped (pp, b0, ~0))
841 continue; /* not matching, skip */
843 /* Trace all drops, or drops received on a specific interface */
844 save_current_data = b0->current_data;
845 save_current_length = b0->current_length;
848 * Typically, we'll need to rewind the buffer
849 * if l2_hdr_offset is valid, make sure to rewind to the start of
850 * the L2 header. This may not be the buffer start in case we pop-ed
852 * Otherwise, rewind to buffer start and hope for the best.
854 if (b0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
856 if (b0->current_data > vnet_buffer (b0)->l2_hdr_offset)
857 vlib_buffer_advance (b0, vnet_buffer (b0)->l2_hdr_offset -
860 else if (b0->current_data > 0)
862 vlib_buffer_advance (b0, (word) -b0->current_data);
866 vlib_buffer_t *last = b0;
867 u32 error_node_index;
870 /* Length of the error string */
871 int error_string_len =
872 clib_strnlen (em->counters_heap[b0->error].name, 128);
874 /* Dig up the drop node */
875 error_node_index = vm->node_main.node_by_error[b0->error];
876 n = vlib_get_node (vm, error_node_index);
878 /* Length of full drop string, w/ "nodename: " prepended */
879 drop_string_len = error_string_len + vec_len (n->name) + 2;
881 /* Find the last buffer in the chain */
882 while (last->flags & VLIB_BUFFER_NEXT_PRESENT)
883 last = vlib_get_buffer (vm, last->next_buffer);
886 * Append <nodename>: <error-string> to the capture,
887 * only if we can do that without allocating a new buffer.
889 if (PREDICT_TRUE ((last->current_data + last->current_length) <
890 (VLIB_BUFFER_DEFAULT_DATA_SIZE - drop_string_len)))
892 clib_memcpy_fast (last->data + last->current_data +
893 last->current_length,
894 n->name, vec_len (n->name));
895 clib_memcpy_fast (last->data + last->current_data +
896 last->current_length + vec_len (n->name),
898 clib_memcpy_fast (last->data + last->current_data +
899 last->current_length + vec_len (n->name) + 2,
900 em->counters_heap[b0->error].name,
902 last->current_length += drop_string_len;
903 b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
904 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
905 last->current_length -= drop_string_len;
906 b0->current_data = save_current_data;
907 b0->current_length = save_current_length;
913 * Didn't have space in the last buffer, here's the dropped
916 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
918 b0->current_data = save_current_data;
919 b0->current_length = save_current_length;
923 #ifndef CLIB_MARCH_VARIANT
925 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
927 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
929 if (im->pcap_drop_filter_hash == 0)
930 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
933 hash_set (im->pcap_drop_filter_hash, error_index, 1);
935 hash_unset (im->pcap_drop_filter_hash, error_index);
937 #endif /* CLIB_MARCH_VARIANT */
939 VLIB_NODE_FN (interface_drop) (vlib_main_t * vm,
940 vlib_node_runtime_t * node,
941 vlib_frame_t * frame)
943 vnet_main_t *vnm = vnet_get_main ();
944 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
945 vnet_pcap_t *pp = &vnm->pcap;
947 if (PREDICT_FALSE (pp->pcap_drop_enable))
948 pcap_drop_trace (vm, im, pp, frame);
950 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
953 VLIB_NODE_FN (interface_punt) (vlib_main_t * vm,
954 vlib_node_runtime_t * node,
955 vlib_frame_t * frame)
957 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
961 VLIB_REGISTER_NODE (interface_drop) = {
962 .name = "error-drop",
963 .vector_size = sizeof (u32),
964 .format_trace = format_vnet_error_trace,
965 .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
974 VLIB_REGISTER_NODE (interface_punt) = {
975 .name = "error-punt",
976 .vector_size = sizeof (u32),
977 .format_trace = format_vnet_error_trace,
978 .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
986 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node) = {
987 .name = "interface-output",
988 .vector_size = sizeof (u32),
991 VLIB_NODE_FN (vnet_interface_output_arc_end_node)
992 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
994 vnet_main_t *vnm = vnet_get_main ();
995 vnet_interface_main_t *im = &vnm->interface_main;
996 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
997 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
999 u16 *lt = im->if_out_arc_end_next_index_by_sw_if_index;
1001 from = vlib_frame_vector_args (frame);
1002 n_left = frame->n_vectors;
1003 vlib_get_buffers (vm, from, bufs, n_left);
1007 vlib_prefetch_buffer_header (b[4], LOAD);
1008 vlib_prefetch_buffer_header (b[5], LOAD);
1009 vlib_prefetch_buffer_header (b[6], LOAD);
1010 vlib_prefetch_buffer_header (b[7], LOAD);
1011 next[0] = vec_elt (lt, vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
1012 next[1] = vec_elt (lt, vnet_buffer (b[1])->sw_if_index[VLIB_TX]);
1013 next[2] = vec_elt (lt, vnet_buffer (b[2])->sw_if_index[VLIB_TX]);
1014 next[3] = vec_elt (lt, vnet_buffer (b[3])->sw_if_index[VLIB_TX]);
1023 next[0] = vec_elt (lt, vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
1029 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1030 return frame->n_vectors;
1033 VLIB_REGISTER_NODE (vnet_interface_output_arc_end_node) = {
1034 .name = "interface-output-arc-end",
1035 .vector_size = sizeof (u32),
1042 VNET_FEATURE_ARC_INIT (interface_output, static) = {
1043 .arc_name = "interface-output",
1044 .start_nodes = VNET_FEATURES (0),
1045 .last_in_arc = "interface-output-arc-end",
1046 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1049 VNET_FEATURE_INIT (span_tx, static) = {
1050 .arc_name = "interface-output",
1051 .node_name = "span-output",
1052 .runs_before = VNET_FEATURES ("interface-output-arc-end"),
1055 VNET_FEATURE_INIT (ipsec_if_tx, static) = {
1056 .arc_name = "interface-output",
1057 .node_name = "ipsec-if-output",
1058 .runs_before = VNET_FEATURES ("interface-output-arc-end"),
1061 VNET_FEATURE_INIT (interface_output_arc_end, static) = {
1062 .arc_name = "interface-output",
1063 .node_name = "interface-output-arc-end",
1067 #ifndef CLIB_MARCH_VARIANT
1069 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1073 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1076 if (hi->output_node_index == 0)
1079 next_index = vlib_node_add_next
1080 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1081 hi->output_node_index);
1082 hi->output_node_next_index = next_index;
1087 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1088 (vnet_per_buffer_interface_output_hw_interface_add_del);
1091 vnet_set_interface_output_node (vnet_main_t * vnm,
1092 u32 hw_if_index, u32 node_index)
1094 ASSERT (node_index);
1095 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1096 u32 next_index = vlib_node_add_next
1097 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
1098 hi->output_node_next_index = next_index;
1099 hi->output_node_index = node_index;
1101 #endif /* CLIB_MARCH_VARIANT */
1104 * fd.io coding-style-patch-verification: ON
1107 * eval: (c-set-style "gnu")