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>
50 #include <vppinfra/vector/mask_compare.h>
51 #include <vppinfra/vector/compress.h>
57 u8 data[128 - 2 * sizeof (u32)];
59 interface_output_trace_t;
61 #ifndef CLIB_MARCH_VARIANT
63 format_vnet_interface_output_trace (u8 * s, va_list * va)
65 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
66 vlib_node_t *node = va_arg (*va, vlib_node_t *);
67 interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
68 vnet_main_t *vnm = vnet_get_main ();
69 vnet_sw_interface_t *si;
72 if (t->sw_if_index != (u32) ~ 0)
74 indent = format_get_indent (s);
76 if (pool_is_free_index
77 (vnm->interface_main.sw_interfaces, t->sw_if_index))
79 /* the interface may have been deleted by the time the trace is printed */
80 s = format (s, "sw_if_index: %d ", t->sw_if_index);
84 si = vnet_get_sw_interface (vnm, t->sw_if_index);
86 format (s, "%U ", format_vnet_sw_interface_name, vnm, si,
90 format (s, "\n%U%U", format_white_space, indent,
91 node->format_buffer ? node->format_buffer : format_hex_bytes,
92 t->data, sizeof (t->data));
96 #endif /* CLIB_MARCH_VARIANT */
99 vnet_interface_output_trace (vlib_main_t * vm,
100 vlib_node_runtime_t * node,
101 vlib_frame_t * frame, uword n_buffers)
106 from = vlib_frame_vector_args (frame);
111 vlib_buffer_t *b0, *b1;
112 interface_output_trace_t *t0, *t1;
114 /* Prefetch next iteration. */
115 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
116 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
121 b0 = vlib_get_buffer (vm, bi0);
122 b1 = vlib_get_buffer (vm, bi1);
124 if (b0->flags & VLIB_BUFFER_IS_TRACED)
126 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
127 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
128 t0->flags = b0->flags;
129 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
132 if (b1->flags & VLIB_BUFFER_IS_TRACED)
134 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
135 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
136 t1->flags = b1->flags;
137 clib_memcpy_fast (t1->data, vlib_buffer_get_current (b1),
148 interface_output_trace_t *t0;
152 b0 = vlib_get_buffer (vm, bi0);
154 if (b0->flags & VLIB_BUFFER_IS_TRACED)
156 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
157 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
158 t0->flags = b0->flags;
159 clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
167 static_always_inline void
168 vnet_interface_output_handle_offload (vlib_main_t *vm, vlib_buffer_t *b)
170 vnet_calc_checksums_inline (vm, b, b->flags & VNET_BUFFER_F_IS_IP4,
171 b->flags & VNET_BUFFER_F_IS_IP6);
174 static_always_inline uword
175 vnet_interface_output_node_inline (vlib_main_t *vm, u32 sw_if_index,
176 vlib_combined_counter_main_t *ccm,
177 vlib_buffer_t **b, u32 config_index, u8 arc,
178 u32 n_left, int do_tx_offloads,
182 u32 n_bytes0, n_bytes1, n_bytes2, n_bytes3;
183 u32 ti = vm->thread_index;
189 /* Prefetch next iteration. */
190 vlib_prefetch_buffer_header (b[4], LOAD);
191 vlib_prefetch_buffer_header (b[5], LOAD);
192 vlib_prefetch_buffer_header (b[6], LOAD);
193 vlib_prefetch_buffer_header (b[7], LOAD);
196 or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags;
198 /* Be grumpy about zero length buffers for benefit of
199 driver tx function. */
200 ASSERT (b[0]->current_length > 0);
201 ASSERT (b[1]->current_length > 0);
202 ASSERT (b[2]->current_length > 0);
203 ASSERT (b[3]->current_length > 0);
205 n_bytes += n_bytes0 = vlib_buffer_length_in_chain (vm, b[0]);
206 n_bytes += n_bytes1 = vlib_buffer_length_in_chain (vm, b[1]);
207 n_bytes += n_bytes2 = vlib_buffer_length_in_chain (vm, b[2]);
208 n_bytes += n_bytes3 = vlib_buffer_length_in_chain (vm, b[3]);
212 u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
213 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
214 tx_swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
215 tx_swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
216 tx_swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
218 /* update vlan subif tx counts, if required */
219 if (PREDICT_FALSE (tx_swif0 != sw_if_index))
220 vlib_increment_combined_counter (ccm, ti, tx_swif0, 1, n_bytes0);
222 if (PREDICT_FALSE (tx_swif1 != sw_if_index))
223 vlib_increment_combined_counter (ccm, ti, tx_swif1, 1, n_bytes1);
225 if (PREDICT_FALSE (tx_swif2 != sw_if_index))
226 vlib_increment_combined_counter (ccm, ti, tx_swif2, 1, n_bytes2);
228 if (PREDICT_FALSE (tx_swif3 != sw_if_index))
229 vlib_increment_combined_counter (ccm, ti, tx_swif3, 1, n_bytes3);
231 if (PREDICT_FALSE (config_index != ~0))
233 vnet_buffer (b[0])->feature_arc_index = arc;
234 b[0]->current_config_index = config_index;
235 vnet_buffer (b[1])->feature_arc_index = arc;
236 b[1]->current_config_index = config_index;
237 vnet_buffer (b[2])->feature_arc_index = arc;
238 b[2]->current_config_index = config_index;
239 vnet_buffer (b[3])->feature_arc_index = arc;
240 b[3]->current_config_index = config_index;
244 if (do_tx_offloads && (or_flags & VNET_BUFFER_F_OFFLOAD))
246 vnet_interface_output_handle_offload (vm, b[0]);
247 vnet_interface_output_handle_offload (vm, b[1]);
248 vnet_interface_output_handle_offload (vm, b[2]);
249 vnet_interface_output_handle_offload (vm, b[3]);
258 /* Be grumpy about zero length buffers for benefit of
259 driver tx function. */
260 ASSERT (b[0]->current_length > 0);
262 n_bytes += n_bytes0 = vlib_buffer_length_in_chain (vm, b[0]);
266 u32 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
268 if (PREDICT_FALSE (config_index != ~0))
270 vnet_buffer (b[0])->feature_arc_index = arc;
271 b[0]->current_config_index = config_index;
274 if (PREDICT_FALSE (tx_swif0 != sw_if_index))
275 vlib_increment_combined_counter (ccm, ti, tx_swif0, 1, n_bytes0);
279 vnet_interface_output_handle_offload (vm, b[0]);
288 static_always_inline void vnet_interface_pcap_tx_trace
289 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame,
290 int sw_if_index_from_buffer)
292 vnet_main_t *vnm = vnet_get_main ();
293 u32 n_left_from, *from;
295 vnet_pcap_t *pp = &vnm->pcap;
297 if (PREDICT_TRUE (pp->pcap_tx_enable == 0))
300 if (sw_if_index_from_buffer == 0)
302 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
303 sw_if_index = rt->sw_if_index;
308 n_left_from = frame->n_vectors;
309 from = vlib_frame_vector_args (frame);
311 while (n_left_from > 0)
314 vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
318 if (sw_if_index_from_buffer)
319 sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
321 if (vnet_is_packet_pcaped (pp, b0, sw_if_index))
322 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
326 static_always_inline void
327 store_tx_frame_scalar_data (vnet_hw_if_output_node_runtime_t *r,
328 vnet_hw_if_tx_frame_t *tf)
331 clib_memcpy_fast (tf, &r->frame, sizeof (vnet_hw_if_tx_frame_t));
334 static_always_inline void
335 enqueu_to_tx_node (vlib_main_t *vm, vlib_node_runtime_t *node,
336 vnet_hw_interface_t *hi, u32 *from, u32 n_vectors)
338 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
339 vnet_hw_if_output_node_runtime_t *r = 0;
340 u32 n_free, n_copy, *to;
341 vnet_hw_if_tx_frame_t *tf;
344 ASSERT (n_vectors <= VLIB_FRAME_SIZE);
346 if (hi->output_node_thread_runtimes)
347 r = vec_elt_at_index (hi->output_node_thread_runtimes, vm->thread_index);
349 f = vlib_get_next_frame_internal (vm, node, next_index, 0);
350 tf = vlib_frame_scalar_args (f);
352 if (f->n_vectors > 0 && (r == 0 || tf->queue_id == r->frame.queue_id))
354 /* append current next frame */
355 n_free = VLIB_FRAME_SIZE - f->n_vectors;
356 n_copy = clib_min (n_vectors, n_free);
358 to = vlib_frame_vector_args (f);
363 if (f->n_vectors > 0)
365 /* current frame doesn't fit - grab empty one */
366 f = vlib_get_next_frame_internal (vm, node, next_index, 1);
367 tf = vlib_frame_scalar_args (f);
370 /* empty frame - store scalar data */
371 store_tx_frame_scalar_data (r, tf);
372 to = vlib_frame_vector_args (f);
373 n_free = VLIB_FRAME_SIZE;
378 vlib_buffer_copy_indices (to, from, n_copy);
379 vlib_put_next_frame (vm, node, next_index, n_free - n_copy);
384 /* we have more indices to store, take empty frame */
386 f = vlib_get_next_frame_internal (vm, node, next_index, 1);
387 store_tx_frame_scalar_data (r, vlib_frame_scalar_args (f));
388 vlib_buffer_copy_indices (vlib_frame_vector_args (f), from, n_vectors);
389 vlib_put_next_frame (vm, node, next_index, VLIB_FRAME_SIZE - n_vectors);
392 VLIB_NODE_FN (vnet_interface_output_node)
393 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
395 vnet_main_t *vnm = vnet_get_main ();
396 vnet_interface_main_t *im = &vnm->interface_main;
397 vlib_combined_counter_main_t *ccm;
398 vnet_hw_interface_t *hi;
399 vnet_sw_interface_t *si;
400 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
401 vlib_buffer_t *bufs[VLIB_FRAME_SIZE];
402 u32 n_bytes, n_buffers = frame->n_vectors;
403 u32 config_index = ~0;
404 u32 sw_if_index = rt->sw_if_index;
405 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
406 u32 ti = vm->thread_index;
407 u8 arc = im->output_feature_arc_index;
408 int arc_or_subif = 0;
409 int do_tx_offloads = 0;
412 if (node->flags & VLIB_NODE_FLAG_TRACE)
413 vnet_interface_output_trace (vm, node, frame, n_buffers);
415 from = vlib_frame_vector_args (frame);
418 return vlib_error_drop_buffers (
420 /* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP,
421 node->node_index, VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
423 vnet_interface_pcap_tx_trace (vm, node, frame,
424 0 /* sw_if_index_from_buffer */ );
426 vlib_get_buffers (vm, from, bufs, n_buffers);
428 si = vnet_get_sw_interface (vnm, sw_if_index);
429 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
431 if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
432 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
434 vlib_simple_counter_main_t *cm;
436 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
437 VNET_INTERFACE_COUNTER_TX_ERROR);
438 vlib_increment_simple_counter (cm, ti, sw_if_index, n_buffers);
440 return vlib_error_drop_buffers (
442 /* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP,
443 node->node_index, VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
446 /* interface-output feature arc handling */
447 if (PREDICT_FALSE (vnet_have_features (arc, sw_if_index)))
449 vnet_feature_config_main_t *fcm;
450 fcm = vnet_feature_get_config_main (arc);
451 config_index = vnet_get_feature_config_index (arc, sw_if_index);
452 vnet_get_config_data (&fcm->config_main, &config_index, &next_index, 0);
455 else if (hash_elts (hi->sub_interface_sw_if_index_by_id))
458 ccm = im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX;
460 if ((hi->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TX_CKSUM) == 0)
463 if (do_tx_offloads == 0 && arc_or_subif == 0)
464 n_bytes = vnet_interface_output_node_inline (
465 vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 0, 0);
466 else if (do_tx_offloads == 0 && arc_or_subif == 1)
467 n_bytes = vnet_interface_output_node_inline (
468 vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 0, 1);
469 else if (do_tx_offloads == 1 && arc_or_subif == 0)
470 n_bytes = vnet_interface_output_node_inline (
471 vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 1, 0);
473 n_bytes = vnet_interface_output_node_inline (
474 vm, sw_if_index, ccm, bufs, config_index, arc, n_buffers, 1, 1);
476 from = vlib_frame_vector_args (frame);
477 if (PREDICT_TRUE (next_index == VNET_INTERFACE_OUTPUT_NEXT_TX))
479 enqueu_to_tx_node (vm, node, hi, from, frame->n_vectors);
483 vlib_buffer_enqueue_to_single_next (vm, node, from, next_index,
487 /* Update main interface stats. */
488 vlib_increment_combined_counter (ccm, ti, sw_if_index, n_buffers, n_bytes);
492 VLIB_REGISTER_NODE (vnet_interface_output_node) = {
493 .name = "interface-output-template",
494 .vector_size = sizeof (u32),
497 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
498 VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm,
499 vlib_node_runtime_t *
501 vlib_frame_t * frame)
503 vnet_main_t *vnm = vnet_get_main ();
504 u32 n_left_to_next, *from, *to_next;
505 u32 n_left_from, next_index;
507 vnet_interface_pcap_tx_trace (vm, node, frame,
508 1 /* sw_if_index_from_buffer */ );
510 n_left_from = frame->n_vectors;
512 from = vlib_frame_vector_args (frame);
513 next_index = node->cached_next_index;
515 while (n_left_from > 0)
517 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
519 while (n_left_from >= 4 && n_left_to_next >= 2)
521 u32 bi0, bi1, next0, next1;
522 vlib_buffer_t *b0, *b1;
523 vnet_hw_interface_t *hi0, *hi1;
525 /* Prefetch next iteration. */
526 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
527 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
538 b0 = vlib_get_buffer (vm, bi0);
539 b1 = vlib_get_buffer (vm, bi1);
542 vnet_get_sup_hw_interface (vnm,
543 vnet_buffer (b0)->sw_if_index
546 vnet_get_sup_hw_interface (vnm,
547 vnet_buffer (b1)->sw_if_index
550 next0 = hi0->output_node_next_index;
551 next1 = hi1->output_node_next_index;
553 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
554 n_left_to_next, bi0, bi1, next0,
558 while (n_left_from > 0 && n_left_to_next > 0)
562 vnet_hw_interface_t *hi0;
571 b0 = vlib_get_buffer (vm, bi0);
574 vnet_get_sup_hw_interface (vnm,
575 vnet_buffer (b0)->sw_if_index
578 next0 = hi0->output_node_next_index;
580 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
581 n_left_to_next, bi0, next0);
584 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
587 return frame->n_vectors;
590 typedef struct vnet_error_trace_t_
597 ip46_address_t src, dst;
598 } vnet_error_trace_t;
601 format_vnet_error_trace (u8 * s, va_list * va)
603 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
604 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
605 vnet_error_trace_t *t = va_arg (*va, vnet_error_trace_t *);
607 /* Normal, non-catchup trace */
608 if (t->details_valid == 0)
610 s = format (s, "rx:%U", format_vnet_sw_if_index_name,
611 vnet_get_main (), t->sw_if_index);
613 else if (t->details_valid == 1)
615 /* The trace capture code didn't understant the mactype */
616 s = format (s, "mactype 0x%4x (not decoded)", t->mactype);
618 else if (t->details_valid == 2)
620 /* Dump the src/dst addresses */
622 s = format (s, "IP4: %U -> %U",
623 format_ip4_address, &t->src.ip4,
624 format_ip4_address, &t->dst.ip4);
626 s = format (s, "IP6: %U -> %U",
627 format_ip6_address, &t->src.ip6,
628 format_ip6_address, &t->dst.ip6);
634 interface_trace_buffers (vlib_main_t * vm,
635 vlib_node_runtime_t * node, vlib_frame_t * frame)
637 u32 n_left, *buffers;
639 buffers = vlib_frame_vector_args (frame);
640 n_left = frame->n_vectors;
645 vlib_buffer_t *b0, *b1;
646 vnet_error_trace_t *t0, *t1;
648 /* Prefetch next iteration. */
649 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
650 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
655 b0 = vlib_get_buffer (vm, bi0);
656 b1 = vlib_get_buffer (vm, bi1);
658 if (b0->flags & VLIB_BUFFER_IS_TRACED)
660 t0 = vlib_add_trace (vm, node, b0,
661 STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
662 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
663 t0->details_valid = 0;
665 if (b1->flags & VLIB_BUFFER_IS_TRACED)
667 t1 = vlib_add_trace (vm, node, b1,
668 STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
669 t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
670 t1->details_valid = 0;
680 vnet_error_trace_t *t0;
684 b0 = vlib_get_buffer (vm, bi0);
686 if (b0->flags & VLIB_BUFFER_IS_TRACED)
688 t0 = vlib_add_trace (vm, node, b0,
689 STRUCT_OFFSET_OF (vnet_error_trace_t, pad));
690 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
691 t0->details_valid = 0;
700 VNET_ERROR_DISPOSITION_DROP,
701 VNET_ERROR_DISPOSITION_PUNT,
702 VNET_ERROR_N_DISPOSITION,
703 } vnet_error_disposition_t;
706 drop_catchup_trace (vlib_main_t * vm,
707 vlib_node_runtime_t * node, vlib_buffer_t * b)
709 /* Can we safely rewind the buffer? If not, fagedaboudit */
710 if (b->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
712 vnet_error_trace_t *t;
715 ethernet_header_t *eh;
718 t = vlib_add_trace (vm, node, b, sizeof (*t));
719 delta = vnet_buffer (b)->l2_hdr_offset - b->current_data;
720 vlib_buffer_advance (b, delta);
722 eh = vlib_buffer_get_current (b);
724 t->mactype = clib_net_to_host_u16 (eh->type);
725 t->details_valid = 1;
728 case ETHERNET_TYPE_IP4:
729 ip4 = (void *) (eh + 1);
730 t->details_valid = 2;
732 t->src.ip4.as_u32 = ip4->src_address.as_u32;
733 t->dst.ip4.as_u32 = ip4->dst_address.as_u32;
736 case ETHERNET_TYPE_IP6:
737 ip6 = (void *) (eh + 1);
738 t->details_valid = 2;
740 clib_memcpy_fast (t->src.as_u8, ip6->src_address.as_u8,
741 sizeof (ip6_address_t));
742 clib_memcpy_fast (t->dst.as_u8, ip6->dst_address.as_u8,
743 sizeof (ip6_address_t));
747 /* Dunno, do nothing, leave details_valid alone */
750 /* Restore current data (probably unnecessary) */
751 vlib_buffer_advance (b, -delta);
755 static_always_inline uword
756 interface_drop_punt (vlib_main_t * vm,
757 vlib_node_runtime_t * node,
758 vlib_frame_t * frame,
759 vnet_error_disposition_t disposition)
761 u32 *from, n_left, thread_index, *sw_if_index;
762 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
763 u32 sw_if_indices[VLIB_FRAME_SIZE];
764 vlib_simple_counter_main_t *cm;
765 u16 nexts[VLIB_FRAME_SIZE];
769 vnm = vnet_get_main ();
770 thread_index = vm->thread_index;
771 from = vlib_frame_vector_args (frame);
772 n_left = frame->n_vectors;
774 sw_if_index = sw_if_indices;
776 vlib_get_buffers (vm, from, bufs, n_left);
778 /* "trace add error-drop NNN?" */
779 if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node))))
781 /* If pkts aren't otherwise traced... */
782 if ((node->flags & VLIB_NODE_FLAG_TRACE) == 0)
784 /* Trace them from here */
785 node->flags |= VLIB_NODE_FLAG_TRACE;
786 while (n_trace && n_left)
789 (vlib_trace_buffer (vm, node, 0 /* next_index */ , b[0],
790 0 /* follow chain */ )))
793 * Here we have a wireshark dissector problem.
794 * Packets may be well-formed, or not. We
795 * must not blow chunks in any case.
797 * Try to produce trace records which will help
798 * folks understand what's going on.
800 drop_catchup_trace (vm, node, b[0]);
808 vlib_set_trace_count (vm, node, n_trace);
810 n_left = frame->n_vectors;
813 if (node->flags & VLIB_NODE_FLAG_TRACE)
814 interface_trace_buffers (vm, node, frame);
816 /* All going to drop regardless, this is just a counting exercise */
817 clib_memset (nexts, 0, sizeof (nexts));
819 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
820 (disposition == VNET_ERROR_DISPOSITION_PUNT
821 ? VNET_INTERFACE_COUNTER_PUNT
822 : VNET_INTERFACE_COUNTER_DROP));
824 /* collect the array of interfaces first ... */
829 /* Prefetch 8 ahead - there's not much going on in each iteration */
830 vlib_prefetch_buffer_header (b[4], LOAD);
831 vlib_prefetch_buffer_header (b[5], LOAD);
832 vlib_prefetch_buffer_header (b[6], LOAD);
833 vlib_prefetch_buffer_header (b[7], LOAD);
835 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
836 sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
837 sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
838 sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
846 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
853 /* ... then count against them in blocks */
854 n_left = frame->n_vectors;
858 vnet_sw_interface_t *sw_if0;
861 off = frame->n_vectors - n_left;
863 sw_if_index = sw_if_indices + off;
865 count = clib_count_equal_u32 (sw_if_index, n_left);
868 vlib_increment_simple_counter (cm, thread_index, sw_if_index[0], count);
870 /* Increment super-interface drop/punt counters for
872 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index[0]);
873 if (sw_if0->sup_sw_if_index != sw_if_index[0])
874 vlib_increment_simple_counter
875 (cm, thread_index, sw_if0->sup_sw_if_index, count);
878 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
880 return frame->n_vectors;
884 pcap_drop_trace (vlib_main_t * vm,
885 vnet_interface_main_t * im,
886 vnet_pcap_t * pp, vlib_frame_t * f)
889 u32 n_left = f->n_vectors;
890 vlib_buffer_t *b0, *p1;
892 i16 save_current_data;
893 u16 save_current_length;
894 vlib_error_main_t *em = &vm->error_main;
896 from = vlib_frame_vector_args (f);
900 if (PREDICT_TRUE (n_left > 1))
902 p1 = vlib_get_buffer (vm, from[1]);
903 vlib_prefetch_buffer_header (p1, LOAD);
907 b0 = vlib_get_buffer (vm, bi0);
911 /* See if we're pointedly ignoring this specific error */
912 if (im->pcap_drop_filter_hash
913 && hash_get (im->pcap_drop_filter_hash, b0->error))
916 if (!vnet_is_packet_pcaped (pp, b0, ~0))
917 continue; /* not matching, skip */
919 /* Trace all drops, or drops received on a specific interface */
920 save_current_data = b0->current_data;
921 save_current_length = b0->current_length;
924 * Typically, we'll need to rewind the buffer
925 * if l2_hdr_offset is valid, make sure to rewind to the start of
926 * the L2 header. This may not be the buffer start in case we pop-ed
928 * Otherwise, rewind to buffer start and hope for the best.
930 if (b0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID)
932 if (b0->current_data > vnet_buffer (b0)->l2_hdr_offset)
933 vlib_buffer_advance (b0, vnet_buffer (b0)->l2_hdr_offset -
936 else if (b0->current_data > 0)
938 vlib_buffer_advance (b0, (word) -b0->current_data);
942 vlib_buffer_t *last = b0;
943 u32 error_node_index;
946 /* Length of the error string */
947 int error_string_len =
948 clib_strnlen (em->counters_heap[b0->error].name, 128);
950 /* Dig up the drop node */
951 error_node_index = vm->node_main.node_by_error[b0->error];
952 n = vlib_get_node (vm, error_node_index);
954 /* Length of full drop string, w/ "nodename: " prepended */
955 drop_string_len = error_string_len + vec_len (n->name) + 2;
957 /* Find the last buffer in the chain */
958 while (last->flags & VLIB_BUFFER_NEXT_PRESENT)
959 last = vlib_get_buffer (vm, last->next_buffer);
962 * Append <nodename>: <error-string> to the capture,
963 * only if we can do that without allocating a new buffer.
965 if (PREDICT_TRUE ((last->current_data + last->current_length) <
966 (VLIB_BUFFER_DEFAULT_DATA_SIZE - drop_string_len)))
968 clib_memcpy_fast (last->data + last->current_data +
969 last->current_length,
970 n->name, vec_len (n->name));
971 clib_memcpy_fast (last->data + last->current_data +
972 last->current_length + vec_len (n->name),
974 clib_memcpy_fast (last->data + last->current_data +
975 last->current_length + vec_len (n->name) + 2,
976 em->counters_heap[b0->error].name,
978 last->current_length += drop_string_len;
979 b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
980 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
981 last->current_length -= drop_string_len;
982 b0->current_data = save_current_data;
983 b0->current_length = save_current_length;
989 * Didn't have space in the last buffer, here's the dropped
992 pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
994 b0->current_data = save_current_data;
995 b0->current_length = save_current_length;
999 #ifndef CLIB_MARCH_VARIANT
1001 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
1003 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
1005 if (im->pcap_drop_filter_hash == 0)
1006 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
1009 hash_set (im->pcap_drop_filter_hash, error_index, 1);
1011 hash_unset (im->pcap_drop_filter_hash, error_index);
1013 #endif /* CLIB_MARCH_VARIANT */
1015 VLIB_NODE_FN (interface_drop) (vlib_main_t * vm,
1016 vlib_node_runtime_t * node,
1017 vlib_frame_t * frame)
1019 vnet_main_t *vnm = vnet_get_main ();
1020 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
1021 vnet_pcap_t *pp = &vnm->pcap;
1023 if (PREDICT_FALSE (pp->pcap_drop_enable))
1024 pcap_drop_trace (vm, im, pp, frame);
1026 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
1029 VLIB_NODE_FN (interface_punt) (vlib_main_t * vm,
1030 vlib_node_runtime_t * node,
1031 vlib_frame_t * frame)
1033 return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
1037 VLIB_REGISTER_NODE (interface_drop) = {
1038 .name = "error-drop",
1039 .vector_size = sizeof (u32),
1040 .format_trace = format_vnet_error_trace,
1041 .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
1050 VLIB_REGISTER_NODE (interface_punt) = {
1051 .name = "error-punt",
1052 .vector_size = sizeof (u32),
1053 .format_trace = format_vnet_error_trace,
1054 .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
1062 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node) = {
1063 .name = "interface-output",
1064 .vector_size = sizeof (u32),
1067 VLIB_NODE_FN (vnet_interface_output_arc_end_node)
1068 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
1070 vnet_main_t *vnm = vnet_get_main ();
1071 vnet_interface_main_t *im = &vnm->interface_main;
1072 vnet_hw_if_output_node_runtime_t *r = 0;
1073 vnet_hw_interface_t *hi;
1074 vnet_hw_if_tx_frame_t *tf;
1075 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1076 u32 sw_if_indices[VLIB_FRAME_SIZE], *sw_if_index = sw_if_indices;
1077 u64 used_elts[VLIB_FRAME_SIZE / 64] = {};
1078 u64 mask[VLIB_FRAME_SIZE / 64] = {};
1079 u32 *tmp, *from, n_left, n_free, n_comp, *to, swif, off;
1083 from = vlib_frame_vector_args (frame);
1084 n_left = frame->n_vectors;
1085 vlib_get_buffers (vm, from, bufs, n_left);
1089 vlib_prefetch_buffer_header (b[4], LOAD);
1090 vlib_prefetch_buffer_header (b[5], LOAD);
1091 vlib_prefetch_buffer_header (b[6], LOAD);
1092 vlib_prefetch_buffer_header (b[7], LOAD);
1093 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
1094 sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
1095 sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
1096 sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
1105 sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
1111 n_left = frame->n_vectors;
1112 swif = sw_if_indices[0];
1115 /* a bit ugly but it allows us to reuse stack space for temporary store
1116 * which may also improve memory latency */
1120 next_index = vec_elt (im->if_out_arc_end_next_index_by_sw_if_index, swif);
1121 hi = vnet_get_sup_hw_interface (vnm, swif);
1122 if (hi->output_node_thread_runtimes)
1123 r = vec_elt_at_index (hi->output_node_thread_runtimes, vm->thread_index);
1124 f = vlib_get_next_frame_internal (vm, node, next_index, 0);
1125 tf = vlib_frame_scalar_args (f);
1127 if (f->n_vectors > 0 && (r == 0 || r->frame.queue_id == tf->queue_id))
1130 n_free = VLIB_FRAME_SIZE - f->n_vectors;
1131 if (n_free >= f->n_vectors)
1132 to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors;
1138 if (f->n_vectors > 0)
1140 /* current frame doesn't fit - grab empty one */
1141 f = vlib_get_next_frame_internal (vm, node, next_index, 1);
1142 tf = vlib_frame_scalar_args (f);
1145 /* empty frame - store scalar data */
1146 store_tx_frame_scalar_data (r, tf);
1147 n_free = VLIB_FRAME_SIZE;
1148 to = vlib_frame_vector_args (f);
1151 /* compare and compress based on comparison mask */
1152 clib_mask_compare_u32 (swif, sw_if_indices, mask, frame->n_vectors);
1153 n_comp = clib_compress_u32 (to, from, mask, frame->n_vectors);
1157 /* indices already written to frame, just close it */
1158 vlib_put_next_frame (vm, node, next_index, n_free - n_comp);
1160 else if (n_free >= n_comp)
1162 /* enough space in the existing frame */
1163 to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors;
1164 vlib_buffer_copy_indices (to, tmp, n_comp);
1165 vlib_put_next_frame (vm, node, next_index, n_free - n_comp);
1170 to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors;
1171 vlib_buffer_copy_indices (to, tmp, n_free);
1172 vlib_put_next_frame (vm, node, next_index, 0);
1175 u32 n_frame2 = n_comp - n_free;
1176 f = vlib_get_next_frame_internal (vm, node, next_index, 1);
1177 to = vlib_frame_vector_args (f);
1178 vlib_buffer_copy_indices (to, tmp + n_free, n_frame2);
1179 tf = vlib_frame_scalar_args (f);
1180 store_tx_frame_scalar_data (r, tf);
1181 vlib_put_next_frame (vm, node, next_index, VLIB_FRAME_SIZE - n_frame2);
1187 /* store comparison mask so we can find next unused element */
1188 for (int i = 0; i < ARRAY_LEN (used_elts); i++)
1189 used_elts[i] |= mask[i];
1191 /* fine first unused sw_if_index by scanning trough used_elts bitmap */
1192 while (PREDICT_FALSE (used_elts[off] == ~0))
1196 sw_if_indices[(off << 6) + count_trailing_zeros (~used_elts[off])];
1200 return frame->n_vectors;
1203 VLIB_REGISTER_NODE (vnet_interface_output_arc_end_node) = {
1204 .name = "interface-output-arc-end",
1205 .vector_size = sizeof (u32),
1212 VNET_FEATURE_ARC_INIT (interface_output, static) = {
1213 .arc_name = "interface-output",
1214 .start_nodes = VNET_FEATURES (0),
1215 .last_in_arc = "interface-output-arc-end",
1216 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1219 VNET_FEATURE_INIT (span_tx, static) = {
1220 .arc_name = "interface-output",
1221 .node_name = "span-output",
1222 .runs_before = VNET_FEATURES ("interface-output-arc-end"),
1225 VNET_FEATURE_INIT (ipsec_if_tx, static) = {
1226 .arc_name = "interface-output",
1227 .node_name = "ipsec-if-output",
1228 .runs_before = VNET_FEATURES ("interface-output-arc-end"),
1231 VNET_FEATURE_INIT (interface_output_arc_end, static) = {
1232 .arc_name = "interface-output",
1233 .node_name = "interface-output-arc-end",
1237 #ifndef CLIB_MARCH_VARIANT
1239 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1243 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1246 if (hi->output_node_index == 0)
1249 next_index = vlib_node_add_next
1250 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1251 hi->output_node_index);
1252 hi->output_node_next_index = next_index;
1257 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1258 (vnet_per_buffer_interface_output_hw_interface_add_del);
1261 vnet_set_interface_output_node (vnet_main_t * vnm,
1262 u32 hw_if_index, u32 node_index)
1264 ASSERT (node_index);
1265 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1266 u32 next_index = vlib_node_add_next
1267 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
1268 hi->output_node_next_index = next_index;
1269 hi->output_node_index = node_index;
1271 #endif /* CLIB_MARCH_VARIANT */
1274 * fd.io coding-style-patch-verification: ON
1277 * eval: (c-set-style "gnu")