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,
338 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
339 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
340 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
342 vnet_calc_checksums_inline
344 b[0]->flags & VNET_BUFFER_F_IS_IP4,
345 b[0]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
346 vnet_calc_checksums_inline
348 b[1]->flags & VNET_BUFFER_F_IS_IP4,
349 b[1]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
350 vnet_calc_checksums_inline
352 b[2]->flags & VNET_BUFFER_F_IS_IP4,
353 b[2]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
354 vnet_calc_checksums_inline
356 b[3]->flags & VNET_BUFFER_F_IS_IP4,
357 b[3]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
364 while (from + 1 <= from_end && n_left_to_tx >= 1)
375 /* Be grumpy about zero length buffers for benefit of
376 driver tx function. */
377 ASSERT (b[0]->current_length > 0);
379 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
380 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
381 n_bytes += n_bytes_b0;
384 if (PREDICT_FALSE (current_config_index != ~0))
386 vnet_buffer (b[0])->feature_arc_index = arc;
387 b[0]->current_config_index = current_config_index;
390 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
393 vlib_increment_combined_counter (im->combined_sw_if_counters +
394 VNET_INTERFACE_COUNTER_TX,
395 thread_index, tx_swif0, 1,
402 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
403 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
404 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
405 vnet_calc_checksums_inline
407 b[0]->flags & VNET_BUFFER_F_IS_IP4,
408 b[0]->flags & VNET_BUFFER_F_IS_IP6, 1 /* with gso */ );
413 vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
416 /* Update main interface stats. */
417 vlib_increment_combined_counter (im->combined_sw_if_counters
418 + VNET_INTERFACE_COUNTER_TX,
420 rt->sw_if_index, n_packets, n_bytes);
423 #endif /* CLIB_MARCH_VARIANT */
425 static_always_inline void vnet_interface_pcap_tx_trace
426 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame,
427 int sw_if_index_from_buffer)
429 u32 n_left_from, *from;
431 vnet_pcap_t *pp = &vlib_global_main.pcap;
433 if (PREDICT_TRUE (pp->pcap_tx_enable == 0))
436 if (sw_if_index_from_buffer == 0)
438 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
439 sw_if_index = rt->sw_if_index;
444 n_left_from = frame->n_vectors;
445 from = vlib_frame_vector_args (frame);
447 while (n_left_from > 0)
449 int classify_filter_result;
451 vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
455 if (pp->filter_classify_table_index != ~0)
457 classify_filter_result =
458 vnet_is_packet_traced_inline
459 (b0, pp->filter_classify_table_index, 0 /* full classify */ );
460 if (classify_filter_result)
461 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
465 if (sw_if_index_from_buffer)
466 sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
468 if (pp->pcap_sw_if_index == 0 || pp->pcap_sw_if_index == sw_if_index)
470 vnet_main_t *vnm = vnet_get_main ();
471 vnet_hw_interface_t *hi =
472 vnet_get_sup_hw_interface (vnm, sw_if_index);
473 /* Capture pkt if not filtered, or if filter hits */
474 if (hi->trace_classify_table_index == ~0 ||
475 vnet_is_packet_traced_inline
476 (b0, hi->trace_classify_table_index, 0 /* full classify */ ))
477 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
482 #ifndef CLIB_MARCH_VARIANT
485 vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node,
486 vlib_frame_t * frame)
488 vnet_main_t *vnm = vnet_get_main ();
489 vnet_hw_interface_t *hi;
490 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
491 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
493 vnet_interface_pcap_tx_trace (vm, node, frame,
494 0 /* sw_if_index_from_buffer */ );
496 if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
497 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
498 /* do_tx_offloads */ 0);
500 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
501 /* do_tx_offloads */ 1);
503 #endif /* CLIB_MARCH_VARIANT */
505 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
506 VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm,
507 vlib_node_runtime_t *
509 vlib_frame_t * frame)
511 vnet_main_t *vnm = vnet_get_main ();
512 u32 n_left_to_next, *from, *to_next;
513 u32 n_left_from, next_index;
515 vnet_interface_pcap_tx_trace (vm, node, frame,
516 1 /* sw_if_index_from_buffer */ );
518 n_left_from = frame->n_vectors;
520 from = vlib_frame_vector_args (frame);
521 next_index = node->cached_next_index;
523 while (n_left_from > 0)
525 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
527 while (n_left_from >= 4 && n_left_to_next >= 2)
529 u32 bi0, bi1, next0, next1;
530 vlib_buffer_t *b0, *b1;
531 vnet_hw_interface_t *hi0, *hi1;
533 /* Prefetch next iteration. */
534 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
535 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
546 b0 = vlib_get_buffer (vm, bi0);
547 b1 = vlib_get_buffer (vm, bi1);
550 vnet_get_sup_hw_interface (vnm,
551 vnet_buffer (b0)->sw_if_index
554 vnet_get_sup_hw_interface (vnm,
555 vnet_buffer (b1)->sw_if_index
558 next0 = hi0->output_node_next_index;
559 next1 = hi1->output_node_next_index;
561 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
562 n_left_to_next, bi0, bi1, next0,
566 while (n_left_from > 0 && n_left_to_next > 0)
570 vnet_hw_interface_t *hi0;
579 b0 = vlib_get_buffer (vm, bi0);
582 vnet_get_sup_hw_interface (vnm,
583 vnet_buffer (b0)->sw_if_index
586 next0 = hi0->output_node_next_index;
588 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
589 n_left_to_next, bi0, next0);
592 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
595 return frame->n_vectors;
598 typedef struct vnet_error_trace_t_
601 } vnet_error_trace_t;
605 format_vnet_error_trace (u8 * s, va_list * va)
607 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
608 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
609 vnet_error_trace_t *t = va_arg (*va, vnet_error_trace_t *);
611 s = format (s, "rx:%U", format_vnet_sw_if_index_name,
612 vnet_get_main (), t->sw_if_index);
618 interface_trace_buffers (vlib_main_t * vm,
619 vlib_node_runtime_t * node, vlib_frame_t * frame)
621 u32 n_left, *buffers;
623 buffers = vlib_frame_vector_args (frame);
624 n_left = frame->n_vectors;
629 vlib_buffer_t *b0, *b1;
630 vnet_error_trace_t *t0, *t1;
632 /* Prefetch next iteration. */
633 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
634 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
639 b0 = vlib_get_buffer (vm, bi0);
640 b1 = vlib_get_buffer (vm, bi1);
642 if (b0->flags & VLIB_BUFFER_IS_TRACED)
644 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
645 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
647 if (b1->flags & VLIB_BUFFER_IS_TRACED)
649 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
650 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
660 vnet_error_trace_t *t0;
664 b0 = vlib_get_buffer (vm, bi0);
666 if (b0->flags & VLIB_BUFFER_IS_TRACED)
668 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
669 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
678 VNET_ERROR_DISPOSITION_DROP,
679 VNET_ERROR_DISPOSITION_PUNT,
680 VNET_ERROR_N_DISPOSITION,
681 } vnet_error_disposition_t;
683 static_always_inline uword
684 interface_drop_punt (vlib_main_t * vm,
685 vlib_node_runtime_t * node,
686 vlib_frame_t * frame,
687 vnet_error_disposition_t disposition)
689 u32 *from, n_left, thread_index, *sw_if_index;
690 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
691 u32 sw_if_indices[VLIB_FRAME_SIZE];
692 vlib_simple_counter_main_t *cm;
693 u16 nexts[VLIB_FRAME_SIZE];
696 vnm = vnet_get_main ();
697 thread_index = vm->thread_index;
698 from = vlib_frame_vector_args (frame);
699 n_left = frame->n_vectors;
701 sw_if_index = sw_if_indices;
703 vlib_get_buffers (vm, from, bufs, n_left);
705 if (node->flags & VLIB_NODE_FLAG_TRACE)
706 interface_trace_buffers (vm, node, frame);
708 /* All going to drop regardless, this is just a counting exercise */
709 clib_memset (nexts, 0, sizeof (nexts));
711 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
712 (disposition == VNET_ERROR_DISPOSITION_PUNT
713 ? VNET_INTERFACE_COUNTER_PUNT
714 : VNET_INTERFACE_COUNTER_DROP));
716 /* collect the array of interfaces first ... */
721 /* Prefetch 8 ahead - there's not much going on in each iteration */
722 vlib_prefetch_buffer_header (b[4], LOAD);
723 vlib_prefetch_buffer_header (b[5], LOAD);
724 vlib_prefetch_buffer_header (b[6], LOAD);
725 vlib_prefetch_buffer_header (b[7], LOAD);
727 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
728 sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
729 sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
730 sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
738 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
745 /* ... then count against them in blocks */
746 n_left = frame->n_vectors;
750 vnet_sw_interface_t *sw_if0;
753 off = frame->n_vectors - n_left;
755 sw_if_index = sw_if_indices + off;
757 count = clib_count_equal_u32 (sw_if_index, n_left);
760 vlib_increment_simple_counter (cm, thread_index, sw_if_index[0], count);
762 /* Increment super-interface drop/punt counters for
764 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index[0]);
765 if (sw_if0->sup_sw_if_index != sw_if_index[0])
766 vlib_increment_simple_counter
767 (cm, thread_index, sw_if0->sup_sw_if_index, count);
770 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
772 return frame->n_vectors;
776 pcap_drop_trace (vlib_main_t * vm,
777 vnet_interface_main_t * im,
778 vnet_pcap_t * pp, vlib_frame_t * f)
781 u32 n_left = f->n_vectors;
782 vlib_buffer_t *b0, *p1;
784 i16 save_current_data;
785 u16 save_current_length;
786 vlib_error_main_t *em = &vm->error_main;
790 from = vlib_frame_vector_args (f);
794 if (PREDICT_TRUE (n_left > 1))
796 p1 = vlib_get_buffer (vm, from[1]);
797 vlib_prefetch_buffer_header (p1, LOAD);
801 b0 = vlib_get_buffer (vm, bi0);
805 /* See if we're pointedly ignoring this specific error */
806 if (im->pcap_drop_filter_hash
807 && hash_get (im->pcap_drop_filter_hash, b0->error))
810 do_trace = (pp->pcap_sw_if_index == 0) ||
811 pp->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX];
814 (do_trace == 0 && pp->filter_classify_table_index != ~0))
816 do_trace = vnet_is_packet_traced_inline
817 (b0, pp->filter_classify_table_index, 0 /* full classify */ );
820 /* Trace all drops, or drops received on a specific interface */
823 save_current_data = b0->current_data;
824 save_current_length = b0->current_length;
827 * Typically, we'll need to rewind the buffer
828 * if l2_hdr_offset is valid, make sure to rewind to the start of
829 * the L2 header. This may not be the buffer start in case we pop-ed
831 * Otherwise, rewind to buffer start and hope for the best.
833 if (b0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
835 if (b0->current_data > vnet_buffer (b0)->l2_hdr_offset)
836 vlib_buffer_advance (b0,
837 vnet_buffer (b0)->l2_hdr_offset -
840 else if (b0->current_data > 0)
841 vlib_buffer_advance (b0, (word) - b0->current_data);
844 vlib_buffer_t *last = b0;
845 u32 error_node_index;
848 /* Length of the error string */
849 int error_string_len =
850 clib_strnlen (em->error_strings_heap[b0->error], 128);
852 /* Dig up the drop node */
853 error_node_index = vm->node_main.node_by_error[b0->error];
854 n = vlib_get_node (vm, error_node_index);
856 /* Length of full drop string, w/ "nodename: " prepended */
857 drop_string_len = error_string_len + vec_len (n->name) + 2;
859 /* Find the last buffer in the chain */
860 while (last->flags & VLIB_BUFFER_NEXT_PRESENT)
861 last = vlib_get_buffer (vm, last->next_buffer);
864 * Append <nodename>: <error-string> to the capture,
865 * only if we can do that without allocating a new buffer.
867 if (PREDICT_TRUE ((last->current_data + last->current_length)
868 < (VLIB_BUFFER_DEFAULT_DATA_SIZE
871 clib_memcpy_fast (last->data + last->current_data +
872 last->current_length, n->name,
874 clib_memcpy_fast (last->data + last->current_data +
875 last->current_length + vec_len (n->name),
877 clib_memcpy_fast (last->data + last->current_data +
878 last->current_length + vec_len (n->name) +
879 2, em->error_strings_heap[b0->error],
881 last->current_length += drop_string_len;
882 b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
883 pcap_add_buffer (&pp->pcap_main, vm, bi0,
884 pp->max_bytes_per_pkt);
885 last->current_length -= drop_string_len;
886 b0->current_data = save_current_data;
887 b0->current_length = save_current_length;
893 * Didn't have space in the last buffer, here's the dropped
896 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
898 b0->current_data = save_current_data;
899 b0->current_length = save_current_length;
904 #ifndef CLIB_MARCH_VARIANT
906 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
908 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
910 if (im->pcap_drop_filter_hash == 0)
911 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
914 hash_set (im->pcap_drop_filter_hash, error_index, 1);
916 hash_unset (im->pcap_drop_filter_hash, error_index);
918 #endif /* CLIB_MARCH_VARIANT */
920 VLIB_NODE_FN (interface_drop) (vlib_main_t * vm,
921 vlib_node_runtime_t * node,
922 vlib_frame_t * frame)
924 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
925 vnet_pcap_t *pp = &vlib_global_main.pcap;
927 if (PREDICT_FALSE (pp->pcap_drop_enable))
928 pcap_drop_trace (vm, im, pp, frame);
930 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
933 VLIB_NODE_FN (interface_punt) (vlib_main_t * vm,
934 vlib_node_runtime_t * node,
935 vlib_frame_t * frame)
937 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
941 VLIB_REGISTER_NODE (interface_drop) = {
942 .name = "error-drop",
943 .vector_size = sizeof (u32),
944 .format_trace = format_vnet_error_trace,
953 VLIB_REGISTER_NODE (interface_punt) = {
954 .name = "error-punt",
955 .vector_size = sizeof (u32),
956 .format_trace = format_vnet_error_trace,
965 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node) = {
966 .name = "interface-output",
967 .vector_size = sizeof (u32),
972 interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
973 vlib_frame_t * from_frame)
975 vnet_main_t *vnm = vnet_get_main ();
976 u32 last_sw_if_index = ~0;
977 vlib_frame_t *to_frame = 0;
978 vnet_hw_interface_t *hw = 0;
979 u32 *from, *to_next = 0;
982 from = vlib_frame_vector_args (from_frame);
983 n_left_from = from_frame->n_vectors;
984 while (n_left_from > 0)
993 b0 = vlib_get_buffer (vm, bi0);
994 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
996 if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
1000 hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
1001 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1003 last_sw_if_index = sw_if_index0;
1004 hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
1005 to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
1006 to_next = vlib_frame_vector_args (to_frame);
1011 to_frame->n_vectors++;
1013 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1014 return from_frame->n_vectors;
1018 VLIB_REGISTER_NODE (interface_tx) = {
1019 .function = interface_tx_node_fn,
1020 .name = "interface-tx",
1021 .vector_size = sizeof (u32),
1028 VNET_FEATURE_ARC_INIT (interface_output, static) =
1030 .arc_name = "interface-output",
1031 .start_nodes = VNET_FEATURES (0),
1032 .last_in_arc = "interface-tx",
1033 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1036 VNET_FEATURE_INIT (span_tx, static) = {
1037 .arc_name = "interface-output",
1038 .node_name = "span-output",
1039 .runs_before = VNET_FEATURES ("interface-tx"),
1042 VNET_FEATURE_INIT (ipsec_if_tx, static) = {
1043 .arc_name = "interface-output",
1044 .node_name = "ipsec-if-output",
1045 .runs_before = VNET_FEATURES ("interface-tx"),
1048 VNET_FEATURE_INIT (interface_tx, static) = {
1049 .arc_name = "interface-output",
1050 .node_name = "interface-tx",
1055 #ifndef CLIB_MARCH_VARIANT
1057 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1061 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1064 if (hi->output_node_index == 0)
1067 next_index = vlib_node_add_next
1068 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1069 hi->output_node_index);
1070 hi->output_node_next_index = next_index;
1075 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1076 (vnet_per_buffer_interface_output_hw_interface_add_del);
1079 vnet_set_interface_output_node (vnet_main_t * vnm,
1080 u32 hw_if_index, u32 node_index)
1082 ASSERT (node_index);
1083 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1084 u32 next_index = vlib_node_add_next
1085 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
1086 hi->output_node_next_index = next_index;
1087 hi->output_node_index = node_index;
1089 #endif /* CLIB_MARCH_VARIANT */
1092 * fd.io coding-style-patch-verification: ON
1095 * eval: (c-set-style "gnu")