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>
50 u8 data[128 - sizeof (u32)];
52 interface_output_trace_t;
55 format_vnet_interface_output_trace (u8 * s, va_list * va)
57 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
58 vlib_node_t *node = va_arg (*va, vlib_node_t *);
59 interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
60 vnet_main_t *vnm = vnet_get_main ();
61 vnet_sw_interface_t *si;
64 if (t->sw_if_index != (u32) ~ 0)
66 indent = format_get_indent (s);
68 if (pool_is_free_index
69 (vnm->interface_main.sw_interfaces, t->sw_if_index))
71 /* the interface may have been deleted by the time the trace is printed */
72 s = format (s, "sw_if_index: %d\n%U%U",
74 format_white_space, indent,
75 node->format_buffer ? node->
76 format_buffer : format_hex_bytes, t->data,
81 si = vnet_get_sw_interface (vnm, t->sw_if_index);
83 s = format (s, "%U\n%U%U",
84 format_vnet_sw_interface_name, vnm, si,
85 format_white_space, indent,
86 node->format_buffer ? node->
87 format_buffer : format_hex_bytes, t->data,
95 vnet_interface_output_trace (vlib_main_t * vm,
96 vlib_node_runtime_t * node,
97 vlib_frame_t * frame, uword n_buffers)
102 from = vlib_frame_args (frame);
107 vlib_buffer_t *b0, *b1;
108 interface_output_trace_t *t0, *t1;
110 /* Prefetch next iteration. */
111 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
112 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
117 b0 = vlib_get_buffer (vm, bi0);
118 b1 = vlib_get_buffer (vm, bi1);
120 if (b0->flags & VLIB_BUFFER_IS_TRACED)
122 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
123 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
124 clib_memcpy (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 clib_memcpy (t1->data, vlib_buffer_get_current (b1),
142 interface_output_trace_t *t0;
146 b0 = vlib_get_buffer (vm, bi0);
148 if (b0->flags & VLIB_BUFFER_IS_TRACED)
150 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
151 t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
152 clib_memcpy (t0->data, vlib_buffer_get_current (b0),
160 static_always_inline void
161 calc_checksums (vlib_main_t * vm, vlib_buffer_t * b)
168 int is_ip4 = (b->flags & VNET_BUFFER_F_IS_IP4) != 0;
169 int is_ip6 = (b->flags & VNET_BUFFER_F_IS_IP6) != 0;
171 ASSERT (!(is_ip4 && is_ip6));
173 ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
174 ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
175 th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
176 uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
180 ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
181 if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
182 ip4->checksum = ip4_header_checksum (ip4);
183 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
184 th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
185 if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
186 uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
191 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
192 th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
193 if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
194 uh->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
197 b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
198 b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
199 b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
202 static_always_inline uword
203 vnet_interface_output_node_inline (vlib_main_t * vm,
204 vlib_node_runtime_t * node,
205 vlib_frame_t * frame, vnet_main_t * vnm,
206 vnet_hw_interface_t * hi,
209 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
210 vnet_sw_interface_t *si;
211 u32 n_left_to_tx, *from, *from_end, *to_tx;
212 u32 n_bytes, n_buffers, n_packets;
213 u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3;
214 u32 thread_index = vm->thread_index;
215 vnet_interface_main_t *im = &vnm->interface_main;
216 u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
217 u32 current_config_index = ~0;
218 u8 arc = im->output_feature_arc_index;
220 n_buffers = frame->n_vectors;
222 if (node->flags & VLIB_NODE_FLAG_TRACE)
223 vnet_interface_output_trace (vm, node, frame, n_buffers);
225 from = vlib_frame_args (frame);
228 return vlib_error_drop_buffers (vm, node, from,
229 /* buffer stride */ 1,
231 VNET_INTERFACE_OUTPUT_NEXT_DROP,
233 VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
235 si = vnet_get_sw_interface (vnm, rt->sw_if_index);
236 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
237 if (!(si->flags & (VNET_SW_INTERFACE_FLAG_ADMIN_UP |
238 VNET_SW_INTERFACE_FLAG_BOND_SLAVE)) ||
239 !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
241 vlib_simple_counter_main_t *cm;
243 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
244 VNET_INTERFACE_COUNTER_TX_ERROR);
245 vlib_increment_simple_counter (cm, thread_index,
246 rt->sw_if_index, 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_DOWN);
256 from_end = from + n_buffers;
258 /* Total byte count of all buffers. */
262 /* interface-output feature arc handling */
263 if (PREDICT_FALSE (vnet_have_features (arc, rt->sw_if_index)))
265 vnet_feature_config_main_t *fcm;
266 fcm = vnet_feature_get_config_main (arc);
267 current_config_index = vnet_get_feature_config_index (arc,
269 vnet_get_config_data (&fcm->config_main, ¤t_config_index,
273 while (from < from_end)
275 /* Get new next frame since previous incomplete frame may have less
276 than VNET_FRAME_SIZE vectors in it. */
277 vlib_get_new_next_frame (vm, node, next_index, to_tx, n_left_to_tx);
279 while (from + 8 <= from_end && n_left_to_tx >= 4)
281 u32 bi0, bi1, bi2, bi3;
282 vlib_buffer_t *b0, *b1, *b2, *b3;
283 u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
286 /* Prefetch next iteration. */
287 vlib_prefetch_buffer_with_index (vm, from[4], LOAD);
288 vlib_prefetch_buffer_with_index (vm, from[5], LOAD);
289 vlib_prefetch_buffer_with_index (vm, from[6], LOAD);
290 vlib_prefetch_buffer_with_index (vm, from[7], LOAD);
304 b0 = vlib_get_buffer (vm, bi0);
305 b1 = vlib_get_buffer (vm, bi1);
306 b2 = vlib_get_buffer (vm, bi2);
307 b3 = vlib_get_buffer (vm, bi3);
309 /* Be grumpy about zero length buffers for benefit of
310 driver tx function. */
311 ASSERT (b0->current_length > 0);
312 ASSERT (b1->current_length > 0);
313 ASSERT (b2->current_length > 0);
314 ASSERT (b3->current_length > 0);
316 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
317 n_bytes_b1 = vlib_buffer_length_in_chain (vm, b1);
318 n_bytes_b2 = vlib_buffer_length_in_chain (vm, b2);
319 n_bytes_b3 = vlib_buffer_length_in_chain (vm, b3);
320 tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
321 tx_swif1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
322 tx_swif2 = vnet_buffer (b2)->sw_if_index[VLIB_TX];
323 tx_swif3 = vnet_buffer (b3)->sw_if_index[VLIB_TX];
325 n_bytes += n_bytes_b0 + n_bytes_b1;
326 n_bytes += n_bytes_b2 + n_bytes_b3;
329 if (PREDICT_FALSE (current_config_index != ~0))
331 vnet_buffer (b0)->feature_arc_index = arc;
332 vnet_buffer (b1)->feature_arc_index = arc;
333 vnet_buffer (b2)->feature_arc_index = arc;
334 vnet_buffer (b3)->feature_arc_index = arc;
335 b0->current_config_index = current_config_index;
336 b1->current_config_index = current_config_index;
337 b2->current_config_index = current_config_index;
338 b3->current_config_index = current_config_index;
341 /* update vlan subif tx counts, if required */
342 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
344 vlib_increment_combined_counter (im->combined_sw_if_counters +
345 VNET_INTERFACE_COUNTER_TX,
346 thread_index, tx_swif0, 1,
350 if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index))
353 vlib_increment_combined_counter (im->combined_sw_if_counters +
354 VNET_INTERFACE_COUNTER_TX,
355 thread_index, tx_swif1, 1,
359 if (PREDICT_FALSE (tx_swif2 != rt->sw_if_index))
362 vlib_increment_combined_counter (im->combined_sw_if_counters +
363 VNET_INTERFACE_COUNTER_TX,
364 thread_index, tx_swif2, 1,
367 if (PREDICT_FALSE (tx_swif3 != rt->sw_if_index))
370 vlib_increment_combined_counter (im->combined_sw_if_counters +
371 VNET_INTERFACE_COUNTER_TX,
372 thread_index, tx_swif3, 1,
376 or_flags = b0->flags | b1->flags | b2->flags | b3->flags;
381 (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
382 VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
383 VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
385 calc_checksums (vm, b0);
386 calc_checksums (vm, b1);
387 calc_checksums (vm, b2);
388 calc_checksums (vm, b3);
393 while (from + 1 <= from_end && n_left_to_tx >= 1)
405 b0 = vlib_get_buffer (vm, bi0);
407 /* Be grumpy about zero length buffers for benefit of
408 driver tx function. */
409 ASSERT (b0->current_length > 0);
411 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
412 tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
413 n_bytes += n_bytes_b0;
416 if (PREDICT_FALSE (current_config_index != ~0))
418 vnet_buffer (b0)->feature_arc_index = arc;
419 b0->current_config_index = current_config_index;
422 if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
425 vlib_increment_combined_counter (im->combined_sw_if_counters +
426 VNET_INTERFACE_COUNTER_TX,
427 thread_index, tx_swif0, 1,
432 calc_checksums (vm, b0);
435 vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
438 /* Update main interface stats. */
439 vlib_increment_combined_counter (im->combined_sw_if_counters
440 + VNET_INTERFACE_COUNTER_TX,
442 rt->sw_if_index, n_packets, n_bytes);
446 static_always_inline uword
447 vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node,
448 vlib_frame_t * frame)
450 vnet_main_t *vnm = vnet_get_main ();
451 vnet_hw_interface_t *hi;
452 vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
453 hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
455 if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
456 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
457 /* do_tx_offloads */ 0);
459 return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
460 /* do_tx_offloads */ 1);
463 VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node);
464 CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node);
466 /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
468 vnet_per_buffer_interface_output (vlib_main_t * vm,
469 vlib_node_runtime_t * node,
470 vlib_frame_t * frame)
472 vnet_main_t *vnm = vnet_get_main ();
473 u32 n_left_to_next, *from, *to_next;
474 u32 n_left_from, next_index;
476 n_left_from = frame->n_vectors;
478 from = vlib_frame_args (frame);
479 next_index = node->cached_next_index;
481 while (n_left_from > 0)
483 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
485 while (n_left_from >= 4 && n_left_to_next >= 2)
487 u32 bi0, bi1, next0, next1;
488 vlib_buffer_t *b0, *b1;
489 vnet_hw_interface_t *hi0, *hi1;
491 /* Prefetch next iteration. */
492 vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
493 vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
504 b0 = vlib_get_buffer (vm, bi0);
505 b1 = vlib_get_buffer (vm, bi1);
508 vnet_get_sup_hw_interface (vnm,
509 vnet_buffer (b0)->sw_if_index
512 vnet_get_sup_hw_interface (vnm,
513 vnet_buffer (b1)->sw_if_index
516 next0 = hi0->output_node_next_index;
517 next1 = hi1->output_node_next_index;
519 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
520 n_left_to_next, bi0, bi1, next0,
524 while (n_left_from > 0 && n_left_to_next > 0)
528 vnet_hw_interface_t *hi0;
537 b0 = vlib_get_buffer (vm, bi0);
540 vnet_get_sup_hw_interface (vnm,
541 vnet_buffer (b0)->sw_if_index
544 next0 = hi0->output_node_next_index;
546 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
547 n_left_to_next, bi0, next0);
550 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
553 return frame->n_vectors;
557 counter_index (vlib_main_t * vm, vlib_error_t e)
562 ni = vlib_error_get_node (e);
563 n = vlib_get_node (vm, ni);
565 ci = vlib_error_get_code (e);
566 ASSERT (ci < n->n_errors);
568 ci += n->error_heap_index;
574 format_vnet_error_trace (u8 * s, va_list * va)
576 vlib_main_t *vm = va_arg (*va, vlib_main_t *);
577 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
578 vlib_error_t *e = va_arg (*va, vlib_error_t *);
579 vlib_node_t *error_node;
580 vlib_error_main_t *em = &vm->error_main;
583 error_node = vlib_get_node (vm, vlib_error_get_node (e[0]));
584 i = counter_index (vm, e[0]);
585 s = format (s, "%v: %s", error_node->name, em->error_strings_heap[i]);
591 trace_errors_with_buffers (vlib_main_t * vm,
592 vlib_node_runtime_t * node, vlib_frame_t * frame)
594 u32 n_left, *buffers;
596 buffers = vlib_frame_vector_args (frame);
597 n_left = frame->n_vectors;
602 vlib_buffer_t *b0, *b1;
603 vlib_error_t *t0, *t1;
605 /* Prefetch next iteration. */
606 vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
607 vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
612 b0 = vlib_get_buffer (vm, bi0);
613 b1 = vlib_get_buffer (vm, bi1);
615 if (b0->flags & VLIB_BUFFER_IS_TRACED)
617 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
620 if (b1->flags & VLIB_BUFFER_IS_TRACED)
622 t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
637 b0 = vlib_get_buffer (vm, bi0);
639 if (b0->flags & VLIB_BUFFER_IS_TRACED)
641 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
650 validate_error (vlib_main_t * vm, vlib_error_t * e, u32 index)
652 uword node_index = vlib_error_get_node (e[0]);
653 uword code = vlib_error_get_code (e[0]);
656 if (node_index >= vec_len (vm->node_main.nodes))
657 return format (0, "[%d], node index out of range 0x%x, error 0x%x",
658 index, node_index, e[0]);
660 n = vlib_get_node (vm, node_index);
661 if (code >= n->n_errors)
662 return format (0, "[%d], code %d out of range for node %v",
663 index, code, n->name);
669 validate_error_frame (vlib_main_t * vm,
670 vlib_node_runtime_t * node, vlib_frame_t * f)
672 u32 *buffers = vlib_frame_args (f);
677 for (i = 0; i < f->n_vectors; i++)
679 b = vlib_get_buffer (vm, buffers[i]);
680 msg = validate_error (vm, &b->error, i);
690 VNET_ERROR_DISPOSITION_DROP,
691 VNET_ERROR_DISPOSITION_PUNT,
692 VNET_ERROR_N_DISPOSITION,
693 } vnet_error_disposition_t;
696 do_packet (vlib_main_t * vm, vlib_error_t a)
698 vlib_error_main_t *em = &vm->error_main;
699 u32 i = counter_index (vm, a);
700 em->counters[i] += 1;
701 vlib_error_elog_count (vm, i, 1);
704 static_always_inline uword
705 process_drop_punt (vlib_main_t * vm,
706 vlib_node_runtime_t * node,
707 vlib_frame_t * frame, vnet_error_disposition_t disposition)
709 vnet_main_t *vnm = vnet_get_main ();
710 vlib_error_main_t *em = &vm->error_main;
711 u32 *buffers, *first_buffer;
712 vlib_error_t current_error;
713 u32 current_counter_index, n_errors_left;
714 u32 current_sw_if_index, n_errors_current_sw_if_index;
716 vlib_simple_counter_main_t *cm;
717 u32 thread_index = vm->thread_index;
719 static vlib_error_t memory[VNET_ERROR_N_DISPOSITION];
720 static char memory_init[VNET_ERROR_N_DISPOSITION];
722 buffers = vlib_frame_args (frame);
723 first_buffer = buffers;
726 vlib_buffer_t *b = vlib_get_buffer (vm, first_buffer[0]);
728 if (!memory_init[disposition])
730 memory_init[disposition] = 1;
731 memory[disposition] = b->error;
734 current_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
735 n_errors_current_sw_if_index = 0;
738 current_error = memory[disposition];
739 current_counter_index = counter_index (vm, memory[disposition]);
740 current_counter = em->counters[current_counter_index];
742 if (node->flags & VLIB_NODE_FLAG_TRACE)
743 trace_errors_with_buffers (vm, node, frame);
745 n_errors_left = frame->n_vectors;
746 cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
747 (disposition == VNET_ERROR_DISPOSITION_PUNT
748 ? VNET_INTERFACE_COUNTER_PUNT
749 : VNET_INTERFACE_COUNTER_DROP));
751 while (n_errors_left >= 2)
753 vlib_buffer_t *b0, *b1;
754 vnet_sw_interface_t *sw_if0, *sw_if1;
757 u32 sw_if_index0, sw_if_index1;
765 b0 = vlib_get_buffer (vm, bi0);
766 b1 = vlib_get_buffer (vm, bi1);
771 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
772 sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
774 /* Speculate that sw_if_index == sw_if_index[01]. */
775 n_errors_current_sw_if_index += 2;
777 /* Speculatively assume all 2 (node, code) pairs are equal
778 to current (node, code). */
779 current_counter += 2;
781 if (PREDICT_FALSE (e0 != current_error
782 || e1 != current_error
783 || sw_if_index0 != current_sw_if_index
784 || sw_if_index1 != current_sw_if_index))
786 current_counter -= 2;
787 n_errors_current_sw_if_index -= 2;
789 vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1);
790 vlib_increment_simple_counter (cm, thread_index, sw_if_index1, 1);
792 /* Increment super-interface drop/punt counters for
794 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
795 vlib_increment_simple_counter
796 (cm, thread_index, sw_if0->sup_sw_if_index,
797 sw_if0->sup_sw_if_index != sw_if_index0);
799 sw_if1 = vnet_get_sw_interface (vnm, sw_if_index1);
800 vlib_increment_simple_counter
801 (cm, thread_index, sw_if1->sup_sw_if_index,
802 sw_if1->sup_sw_if_index != sw_if_index1);
804 em->counters[current_counter_index] = current_counter;
808 /* For 2 repeated errors, change current error. */
809 if (e0 == e1 && e1 != current_error)
812 current_counter_index = counter_index (vm, e0);
814 current_counter = em->counters[current_counter_index];
818 while (n_errors_left >= 1)
821 vnet_sw_interface_t *sw_if0;
823 u32 bi0, sw_if_index0;
829 current_counter += 1;
831 b0 = vlib_get_buffer (vm, bi0);
834 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
836 /* Increment drop/punt counters. */
837 vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1);
839 /* Increment super-interface drop/punt counters for sub-interfaces. */
840 sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
841 vlib_increment_simple_counter (cm, thread_index,
842 sw_if0->sup_sw_if_index,
843 sw_if0->sup_sw_if_index != sw_if_index0);
845 if (PREDICT_FALSE (e0 != current_error))
847 current_counter -= 1;
849 vlib_error_elog_count (vm, current_counter_index,
851 - em->counters[current_counter_index]));
853 em->counters[current_counter_index] = current_counter;
857 current_counter_index = counter_index (vm, e0);
858 current_counter = em->counters[current_counter_index];
862 if (n_errors_current_sw_if_index > 0)
864 vnet_sw_interface_t *si;
866 vlib_increment_simple_counter (cm, thread_index, current_sw_if_index,
867 n_errors_current_sw_if_index);
869 si = vnet_get_sw_interface (vnm, current_sw_if_index);
870 if (si->sup_sw_if_index != current_sw_if_index)
871 vlib_increment_simple_counter (cm, thread_index, si->sup_sw_if_index,
872 n_errors_current_sw_if_index);
875 vlib_error_elog_count (vm, current_counter_index,
877 - em->counters[current_counter_index]));
879 /* Return cached counter. */
880 em->counters[current_counter_index] = current_counter;
882 /* Save memory for next iteration. */
883 memory[disposition] = current_error;
885 if (disposition == VNET_ERROR_DISPOSITION_DROP || !vm->os_punt_frame)
887 vlib_buffer_free (vm, first_buffer, frame->n_vectors);
889 /* If there is no punt function, free the frame as well. */
890 if (disposition == VNET_ERROR_DISPOSITION_PUNT && !vm->os_punt_frame)
891 vlib_frame_free (vm, node, frame);
894 vm->os_punt_frame (vm, node, frame);
896 return frame->n_vectors;
900 pcap_drop_trace (vlib_main_t * vm,
901 vnet_interface_main_t * im, vlib_frame_t * f)
904 u32 n_left = f->n_vectors;
905 vlib_buffer_t *b0, *p1;
907 i16 save_current_data;
908 u16 save_current_length;
910 from = vlib_frame_vector_args (f);
914 if (PREDICT_TRUE (n_left > 1))
916 p1 = vlib_get_buffer (vm, from[1]);
917 vlib_prefetch_buffer_header (p1, LOAD);
921 b0 = vlib_get_buffer (vm, bi0);
925 /* See if we're pointedly ignoring this specific error */
926 if (im->pcap_drop_filter_hash
927 && hash_get (im->pcap_drop_filter_hash, b0->error))
930 /* Trace all drops, or drops received on a specific interface */
931 if (im->pcap_sw_if_index == 0 ||
932 im->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX])
934 save_current_data = b0->current_data;
935 save_current_length = b0->current_length;
938 * Typically, we'll need to rewind the buffer
940 if (b0->current_data > 0)
941 vlib_buffer_advance (b0, (word) - b0->current_data);
943 pcap_add_buffer (&im->pcap_main, vm, bi0, 512);
945 b0->current_data = save_current_data;
946 b0->current_length = save_current_length;
952 vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
954 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
956 if (im->pcap_drop_filter_hash == 0)
957 im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
960 hash_set (im->pcap_drop_filter_hash, error_index, 1);
962 hash_unset (im->pcap_drop_filter_hash, error_index);
966 process_drop (vlib_main_t * vm,
967 vlib_node_runtime_t * node, vlib_frame_t * frame)
969 vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
971 if (PREDICT_FALSE (im->drop_pcap_enable))
972 pcap_drop_trace (vm, im, frame);
974 return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
978 process_punt (vlib_main_t * vm,
979 vlib_node_runtime_t * node, vlib_frame_t * frame)
981 return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
985 VLIB_REGISTER_NODE (drop_buffers,static) = {
986 .function = process_drop,
987 .name = "error-drop",
988 .flags = VLIB_NODE_FLAG_IS_DROP,
989 .vector_size = sizeof (u32),
990 .format_trace = format_vnet_error_trace,
991 .validate_frame = validate_error_frame,
995 VLIB_NODE_FUNCTION_MULTIARCH (drop_buffers, process_drop);
998 VLIB_REGISTER_NODE (punt_buffers,static) = {
999 .function = process_punt,
1000 .flags = (VLIB_NODE_FLAG_FRAME_NO_FREE_AFTER_DISPATCH
1001 | VLIB_NODE_FLAG_IS_PUNT),
1002 .name = "error-punt",
1003 .vector_size = sizeof (u32),
1004 .format_trace = format_vnet_error_trace,
1005 .validate_frame = validate_error_frame,
1009 VLIB_NODE_FUNCTION_MULTIARCH (punt_buffers, process_punt);
1012 VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node,static) = {
1013 .function = vnet_per_buffer_interface_output,
1014 .name = "interface-output",
1015 .vector_size = sizeof (u32),
1019 VLIB_NODE_FUNCTION_MULTIARCH (vnet_per_buffer_interface_output_node,
1020 vnet_per_buffer_interface_output);
1023 interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1024 vlib_frame_t * from_frame)
1026 vnet_main_t *vnm = vnet_get_main ();
1027 u32 last_sw_if_index = ~0;
1028 vlib_frame_t *to_frame = 0;
1029 vnet_hw_interface_t *hw = 0;
1030 u32 *from, *to_next = 0;
1033 from = vlib_frame_vector_args (from_frame);
1034 n_left_from = from_frame->n_vectors;
1035 while (n_left_from > 0)
1044 b0 = vlib_get_buffer (vm, bi0);
1045 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
1047 if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
1051 hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
1052 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1054 last_sw_if_index = sw_if_index0;
1055 hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
1056 to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
1057 to_next = vlib_frame_vector_args (to_frame);
1062 to_frame->n_vectors++;
1064 vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
1065 return from_frame->n_vectors;
1069 VLIB_REGISTER_NODE (interface_tx, static) = {
1070 .function = interface_tx_node_fn,
1071 .name = "interface-tx",
1072 .vector_size = sizeof (u32),
1079 VNET_FEATURE_ARC_INIT (interface_output, static) =
1081 .arc_name = "interface-output",
1082 .start_nodes = VNET_FEATURES (0),
1083 .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
1086 VNET_FEATURE_INIT (span_tx, static) = {
1087 .arc_name = "interface-output",
1088 .node_name = "span-output",
1089 .runs_before = VNET_FEATURES ("interface-tx"),
1092 VNET_FEATURE_INIT (ipsec_if_tx, static) = {
1093 .arc_name = "interface-output",
1094 .node_name = "ipsec-if-output",
1095 .runs_before = VNET_FEATURES ("interface-tx"),
1098 VNET_FEATURE_INIT (interface_tx, static) = {
1099 .arc_name = "interface-output",
1100 .node_name = "interface-tx",
1106 vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
1110 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1113 if (hi->output_node_index == 0)
1116 next_index = vlib_node_add_next
1117 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
1118 hi->output_node_index);
1119 hi->output_node_next_index = next_index;
1124 VNET_HW_INTERFACE_ADD_DEL_FUNCTION
1125 (vnet_per_buffer_interface_output_hw_interface_add_del);
1128 vnet_set_interface_output_node (vnet_main_t * vnm,
1129 u32 hw_if_index, u32 node_index)
1131 ASSERT (node_index);
1132 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1133 u32 next_index = vlib_node_add_next
1134 (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
1135 hi->output_node_next_index = next_index;
1136 hi->output_node_index = node_index;
1139 static clib_error_t *
1140 pcap_drop_trace_command_fn (vlib_main_t * vm,
1141 unformat_input_t * input,
1142 vlib_cli_command_t * cmd)
1144 vnet_main_t *vnm = vnet_get_main ();
1145 vnet_interface_main_t *im = &vnm->interface_main;
1149 clib_error_t *error = 0;
1151 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1153 if (unformat (input, "on"))
1155 if (im->drop_pcap_enable == 0)
1157 if (im->pcap_filename == 0)
1158 im->pcap_filename = format (0, "/tmp/drop.pcap%c", 0);
1160 memset (&im->pcap_main, 0, sizeof (im->pcap_main));
1161 im->pcap_main.file_name = (char *) im->pcap_filename;
1162 im->pcap_main.n_packets_to_capture = 100;
1163 if (im->pcap_pkts_to_capture)
1164 im->pcap_main.n_packets_to_capture = im->pcap_pkts_to_capture;
1166 im->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
1167 im->drop_pcap_enable = 1;
1169 vlib_cli_output (vm, "pcap drop capture on...");
1173 vlib_cli_output (vm, "pcap drop capture already on...");
1177 else if (unformat (input, "off"))
1181 if (im->drop_pcap_enable)
1183 vlib_cli_output (vm, "captured %d pkts...",
1184 im->pcap_main.n_packets_captured);
1185 if (im->pcap_main.n_packets_captured)
1187 im->pcap_main.n_packets_to_capture =
1188 im->pcap_main.n_packets_captured;
1189 error = pcap_write (&im->pcap_main);
1191 clib_error_report (error);
1193 vlib_cli_output (vm, "saved to %s...", im->pcap_filename);
1198 vlib_cli_output (vm, "pcap drop capture already off...");
1201 im->drop_pcap_enable = 0;
1203 else if (unformat (input, "max %d", &max))
1205 im->pcap_pkts_to_capture = max;
1209 else if (unformat (input, "intfc %U",
1210 unformat_vnet_sw_interface, vnm,
1211 &im->pcap_sw_if_index))
1213 else if (unformat (input, "intfc any"))
1215 im->pcap_sw_if_index = 0;
1218 else if (unformat (input, "file %s", &filename))
1220 u8 *chroot_filename;
1221 /* Brain-police user path input */
1222 if (strstr ((char *) filename, "..")
1223 || index ((char *) filename, '/'))
1225 vlib_cli_output (vm, "illegal characters in filename '%s'",
1230 chroot_filename = format (0, "/tmp/%s%c", filename, 0);
1231 vec_free (filename);
1233 if (im->pcap_filename)
1234 vec_free (im->pcap_filename);
1235 im->pcap_filename = chroot_filename;
1236 im->pcap_main.file_name = (char *) im->pcap_filename;
1239 else if (unformat (input, "status"))
1241 if (im->drop_pcap_enable == 0)
1243 vlib_cli_output (vm, "pcap drop capture is off...");
1247 vlib_cli_output (vm, "pcap drop capture: %d of %d pkts...",
1248 im->pcap_main.n_packets_captured,
1249 im->pcap_main.n_packets_to_capture);
1258 return clib_error_return (0, "unknown input `%U'",
1259 format_unformat_error, input);
1265 VLIB_CLI_COMMAND (pcap_trace_command, static) = {
1266 .path = "pcap drop trace",
1268 "pcap drop trace on off max <nn> intfc <intfc> file <name> status",
1269 .function = pcap_drop_trace_command_fn,
1274 * fd.io coding-style-patch-verification: ON
1277 * eval: (c-set-style "gnu")