2 * Copyright (c) 2017 SUSE LLC.
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 #include <vlib/vlib.h>
17 #include <vnet/pg/pg.h>
18 #include <vnet/geneve/geneve.h>
29 format_geneve_rx_trace (u8 * s, va_list * args)
31 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
32 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
33 geneve_rx_trace_t *t = va_arg (*args, geneve_rx_trace_t *);
35 if (t->tunnel_index != ~0)
39 "GENEVE decap from geneve_tunnel%d vni %d next %d error %d",
40 t->tunnel_index, t->vni_rsvd, t->next_index, t->error);
44 s = format (s, "GENEVE decap error - tunnel for vni %d does not exist",
51 validate_geneve_fib (vlib_buffer_t * b, geneve_tunnel_t * t, u32 is_ip4)
53 u32 fib_index, sw_if_index;
55 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
58 fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
59 vec_elt (ip4_main.fib_index_by_sw_if_index, sw_if_index) :
60 vnet_buffer (b)->sw_if_index[VLIB_TX];
62 fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
63 vec_elt (ip6_main.fib_index_by_sw_if_index, sw_if_index) :
64 vnet_buffer (b)->sw_if_index[VLIB_TX];
66 return (fib_index == t->encap_fib_index);
70 geneve_input (vlib_main_t * vm,
71 vlib_node_runtime_t * node,
72 vlib_frame_t * from_frame, u32 is_ip4)
74 u32 n_left_from, next_index, *from, *to_next;
75 geneve_main_t *vxm = &geneve_main;
76 vnet_main_t *vnm = vxm->vnet_main;
77 vnet_interface_main_t *im = &vnm->interface_main;
78 u32 last_tunnel_index = ~0;
79 geneve4_tunnel_key_t last_key4;
80 geneve6_tunnel_key_t last_key6;
81 u32 pkts_decapsulated = 0;
82 u32 thread_index = vm->thread_index;
83 u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
84 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
87 last_key4.as_u64 = ~0;
89 clib_memset (&last_key6, 0xff, sizeof (last_key6));
91 from = vlib_frame_vector_args (from_frame);
92 n_left_from = from_frame->n_vectors;
93 vlib_get_buffers (vm, from, bufs, n_left_from);
95 next_index = node->cached_next_index;
96 stats_sw_if_index = node->runtime_data[0];
97 stats_n_packets = stats_n_bytes = 0;
99 while (n_left_from > 0)
103 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
104 while (n_left_from >= 4 && n_left_to_next >= 2)
107 vlib_buffer_t *b0, *b1;
109 ip4_header_t *ip4_0, *ip4_1;
110 ip6_header_t *ip6_0, *ip6_1;
111 geneve_header_t *geneve0, *geneve1;
113 u32 tunnel_index0, tunnel_index1;
114 geneve_tunnel_t *t0, *t1, *mt0 = NULL, *mt1 = NULL;
115 geneve4_tunnel_key_t key4_0, key4_1;
116 geneve6_tunnel_key_t key6_0, key6_1;
118 u32 sw_if_index0, sw_if_index1, len0, len1;
120 /* Prefetch next iteration. */
122 vlib_prefetch_buffer_header (b[2], LOAD);
123 vlib_prefetch_buffer_header (b[3], LOAD);
125 CLIB_PREFETCH (b[2]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
126 CLIB_PREFETCH (b[3]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
142 /* udp leaves current_data pointing at the geneve header */
143 geneve0 = vlib_buffer_get_current (b0);
144 geneve1 = vlib_buffer_get_current (b1);
146 vnet_geneve_hdr_1word_ntoh (geneve0);
147 vnet_geneve_hdr_1word_ntoh (geneve1);
152 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
154 (b1, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
155 ip4_0 = vlib_buffer_get_current (b0);
156 ip4_1 = vlib_buffer_get_current (b1);
161 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
163 (b1, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
164 ip6_0 = vlib_buffer_get_current (b0);
165 ip6_1 = vlib_buffer_get_current (b1);
168 /* pop (ip, udp, geneve) */
173 sizeof (*ip4_0) + sizeof (udp_header_t) +
174 GENEVE_BASE_HEADER_LENGTH +
175 vnet_get_geneve_options_len (geneve0));
176 vlib_buffer_advance (b1,
177 sizeof (*ip4_1) + sizeof (udp_header_t) +
178 GENEVE_BASE_HEADER_LENGTH +
179 vnet_get_geneve_options_len (geneve1));
185 sizeof (*ip6_0) + sizeof (udp_header_t) +
186 GENEVE_BASE_HEADER_LENGTH +
187 vnet_get_geneve_options_len (geneve0));
188 vlib_buffer_advance (b0,
189 sizeof (*ip6_0) + sizeof (udp_header_t) +
190 GENEVE_BASE_HEADER_LENGTH +
191 vnet_get_geneve_options_len (geneve1));
201 (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
203 error0 = GENEVE_ERROR_BAD_FLAGS;
204 next0 = GENEVE_INPUT_NEXT_DROP;
207 #if SUPPORT_OPTIONS_HEADER==1
208 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
210 error0 = GENEVE_ERROR_BAD_FLAGS;
211 next0 = GENEVE_INPUT_NEXT_DROP;
217 key4_0.remote = ip4_0->src_address.as_u32;
218 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
220 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
221 if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
223 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
224 if (PREDICT_FALSE (p0 == NULL))
226 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
227 next0 = GENEVE_INPUT_NEXT_DROP;
230 last_key4.as_u64 = key4_0.as_u64;
231 tunnel_index0 = last_tunnel_index = p0[0];
234 tunnel_index0 = last_tunnel_index;
235 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
237 /* Validate GENEVE tunnel encap-fib index against packet */
238 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
240 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
241 next0 = GENEVE_INPUT_NEXT_DROP;
245 /* Validate GENEVE tunnel SIP against packet DIP */
247 (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
248 goto next0; /* valid packet */
250 (ip4_address_is_multicast (&ip4_0->dst_address)))
252 key4_0.remote = ip4_0->dst_address.as_u32;
253 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
254 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
255 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
256 if (PREDICT_TRUE (p0 != NULL))
258 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
259 goto next0; /* valid packet */
262 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
263 next0 = GENEVE_INPUT_NEXT_DROP;
269 key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
270 key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
271 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
273 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
275 (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
277 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
278 if (PREDICT_FALSE (p0 == NULL))
280 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
281 next0 = GENEVE_INPUT_NEXT_DROP;
284 clib_memcpy_fast (&last_key6, &key6_0, sizeof (key6_0));
285 tunnel_index0 = last_tunnel_index = p0[0];
288 tunnel_index0 = last_tunnel_index;
289 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
291 /* Validate GENEVE tunnel encap-fib index against packet */
292 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
294 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
295 next0 = GENEVE_INPUT_NEXT_DROP;
299 /* Validate GENEVE tunnel SIP against packet DIP */
300 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
302 goto next0; /* valid packet */
304 (ip6_address_is_multicast (&ip6_0->dst_address)))
306 key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
307 key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
308 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
309 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
310 if (PREDICT_TRUE (p0 != NULL))
312 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
313 goto next0; /* valid packet */
316 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
317 next0 = GENEVE_INPUT_NEXT_DROP;
322 next0 = t0->decap_next_index;
323 sw_if_index0 = t0->sw_if_index;
324 len0 = vlib_buffer_length_in_chain (vm, b0);
326 /* Required to make the l2 tag push / pop code work on l2 subifs */
327 if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
328 vnet_update_l2_len (b0);
330 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
331 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
332 sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
335 stats_n_packets += 1;
336 stats_n_bytes += len0;
338 /* Batch stats increment on the same geneve tunnel so counter
339 is not incremented per packet */
340 if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
342 stats_n_packets -= 1;
343 stats_n_bytes -= len0;
345 vlib_increment_combined_counter
346 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
347 thread_index, stats_sw_if_index,
348 stats_n_packets, stats_n_bytes);
350 stats_n_bytes = len0;
351 stats_sw_if_index = sw_if_index0;
355 b0->error = error0 ? node->errors[error0] : 0;
357 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
359 geneve_rx_trace_t *tr
360 = vlib_add_trace (vm, node, b0, sizeof (*tr));
361 tr->next_index = next0;
363 tr->tunnel_index = tunnel_index0;
364 tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
368 (vnet_get_geneve_version (geneve1) != GENEVE_VERSION))
370 error1 = GENEVE_ERROR_BAD_FLAGS;
371 next1 = GENEVE_INPUT_NEXT_DROP;
374 #if SUPPORT_OPTIONS_HEADER==1
375 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve1) == 1))
377 error1 = GENEVE_ERROR_BAD_FLAGS;
378 next1 = GENEVE_INPUT_NEXT_DROP;
384 key4_1.remote = ip4_1->src_address.as_u32;
385 key4_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
387 /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
388 if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64))
390 p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
391 if (PREDICT_FALSE (p1 == NULL))
393 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
394 next1 = GENEVE_INPUT_NEXT_DROP;
397 last_key4.as_u64 = key4_1.as_u64;
398 tunnel_index1 = last_tunnel_index = p1[0];
401 tunnel_index1 = last_tunnel_index;
402 t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
404 /* Validate GENEVE tunnel encap-fib index against packet */
405 if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
407 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
408 next1 = GENEVE_INPUT_NEXT_DROP;
412 /* Validate GENEVE tunnel SIP against packet DIP */
414 (ip4_1->dst_address.as_u32 == t1->local.ip4.as_u32))
415 goto next1; /* valid packet */
417 (ip4_address_is_multicast (&ip4_1->dst_address)))
419 key4_1.remote = ip4_1->dst_address.as_u32;
420 key4_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
421 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
422 p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
423 if (PREDICT_TRUE (p1 != NULL))
425 mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
426 goto next1; /* valid packet */
429 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
430 next1 = GENEVE_INPUT_NEXT_DROP;
436 key6_1.remote.as_u64[0] = ip6_1->src_address.as_u64[0];
437 key6_1.remote.as_u64[1] = ip6_1->src_address.as_u64[1];
438 key6_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
440 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
442 (memcmp (&key6_1, &last_key6, sizeof (last_key6)) != 0))
444 p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
446 if (PREDICT_FALSE (p1 == NULL))
448 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
449 next1 = GENEVE_INPUT_NEXT_DROP;
453 clib_memcpy_fast (&last_key6, &key6_1, sizeof (key6_1));
454 tunnel_index1 = last_tunnel_index = p1[0];
457 tunnel_index1 = last_tunnel_index;
458 t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
460 /* Validate GENEVE tunnel encap-fib index against packet */
461 if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
463 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
464 next1 = GENEVE_INPUT_NEXT_DROP;
468 /* Validate GENEVE tunnel SIP against packet DIP */
469 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_1->dst_address,
471 goto next1; /* valid packet */
473 (ip6_address_is_multicast (&ip6_1->dst_address)))
475 key6_1.remote.as_u64[0] = ip6_1->dst_address.as_u64[0];
476 key6_1.remote.as_u64[1] = ip6_1->dst_address.as_u64[1];
477 key6_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
478 p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
479 if (PREDICT_TRUE (p1 != NULL))
481 mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
482 goto next1; /* valid packet */
485 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
486 next1 = GENEVE_INPUT_NEXT_DROP;
491 next1 = t1->decap_next_index;
492 sw_if_index1 = t1->sw_if_index;
493 len1 = vlib_buffer_length_in_chain (vm, b1);
495 /* Required to make the l2 tag push / pop code work on l2 subifs */
496 if (PREDICT_TRUE (next1 == GENEVE_INPUT_NEXT_L2_INPUT))
497 vnet_update_l2_len (b1);
499 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
500 vnet_buffer (b1)->sw_if_index[VLIB_RX] = sw_if_index1;
501 sw_if_index1 = (mt1) ? mt1->sw_if_index : sw_if_index1;
504 stats_n_packets += 1;
505 stats_n_bytes += len1;
507 /* Batch stats increment on the same geneve tunnel so counter
508 is not incremented per packet */
509 if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
511 stats_n_packets -= 1;
512 stats_n_bytes -= len1;
514 vlib_increment_combined_counter
515 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
516 thread_index, stats_sw_if_index,
517 stats_n_packets, stats_n_bytes);
519 stats_n_bytes = len1;
520 stats_sw_if_index = sw_if_index1;
524 b1->error = error1 ? node->errors[error1] : 0;
526 if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
528 geneve_rx_trace_t *tr
529 = vlib_add_trace (vm, node, b1, sizeof (*tr));
530 tr->next_index = next1;
532 tr->tunnel_index = tunnel_index1;
533 tr->vni_rsvd = vnet_get_geneve_vni (geneve1);
536 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
537 to_next, n_left_to_next,
538 bi0, bi1, next0, next1);
541 while (n_left_from > 0 && n_left_to_next > 0)
548 geneve_header_t *geneve0;
551 geneve_tunnel_t *t0, *mt0 = NULL;
552 geneve4_tunnel_key_t key4_0;
553 geneve6_tunnel_key_t key6_0;
555 u32 sw_if_index0, len0;
567 /* udp leaves current_data pointing at the geneve header */
568 geneve0 = vlib_buffer_get_current (b0);
569 vnet_geneve_hdr_1word_ntoh (geneve0);
574 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
575 ip4_0 = vlib_buffer_get_current (b0);
580 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
581 ip6_0 = vlib_buffer_get_current (b0);
584 /* pop (ip, udp, geneve) */
589 sizeof (*ip4_0) + sizeof (udp_header_t) +
590 GENEVE_BASE_HEADER_LENGTH +
591 vnet_get_geneve_options_len (geneve0));
597 sizeof (*ip6_0) + sizeof (udp_header_t) +
598 GENEVE_BASE_HEADER_LENGTH +
599 vnet_get_geneve_options_len (geneve0));
606 (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
608 error0 = GENEVE_ERROR_BAD_FLAGS;
609 next0 = GENEVE_INPUT_NEXT_DROP;
612 #if SUPPORT_OPTIONS_HEADER==1
613 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
615 error0 = GENEVE_ERROR_BAD_FLAGS;
616 next0 = GENEVE_INPUT_NEXT_DROP;
622 key4_0.remote = ip4_0->src_address.as_u32;
623 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
625 /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
626 if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
628 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
629 if (PREDICT_FALSE (p0 == NULL))
631 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
632 next0 = GENEVE_INPUT_NEXT_DROP;
635 last_key4.as_u64 = key4_0.as_u64;
636 tunnel_index0 = last_tunnel_index = p0[0];
639 tunnel_index0 = last_tunnel_index;
640 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
642 /* Validate GENEVE tunnel encap-fib index agaist packet */
643 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
645 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
646 next0 = GENEVE_INPUT_NEXT_DROP;
650 /* Validate GENEVE tunnel SIP against packet DIP */
652 (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
653 goto next00; /* valid packet */
655 (ip4_address_is_multicast (&ip4_0->dst_address)))
657 key4_0.remote = ip4_0->dst_address.as_u32;
658 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
659 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
660 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
661 if (PREDICT_TRUE (p0 != NULL))
663 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
664 goto next00; /* valid packet */
667 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
668 next0 = GENEVE_INPUT_NEXT_DROP;
674 key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
675 key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
676 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
678 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
680 (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
682 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
683 if (PREDICT_FALSE (p0 == NULL))
685 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
686 next0 = GENEVE_INPUT_NEXT_DROP;
689 clib_memcpy_fast (&last_key6, &key6_0, sizeof (key6_0));
690 tunnel_index0 = last_tunnel_index = p0[0];
693 tunnel_index0 = last_tunnel_index;
694 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
696 /* Validate GENEVE tunnel encap-fib index agaist packet */
697 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
699 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
700 next0 = GENEVE_INPUT_NEXT_DROP;
704 /* Validate GENEVE tunnel SIP against packet DIP */
705 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
707 goto next00; /* valid packet */
709 (ip6_address_is_multicast (&ip6_0->dst_address)))
711 key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
712 key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
713 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
714 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
715 if (PREDICT_TRUE (p0 != NULL))
717 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
718 goto next00; /* valid packet */
721 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
722 next0 = GENEVE_INPUT_NEXT_DROP;
727 next0 = t0->decap_next_index;
728 sw_if_index0 = t0->sw_if_index;
729 len0 = vlib_buffer_length_in_chain (vm, b0);
731 /* Required to make the l2 tag push / pop code work on l2 subifs */
732 if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
733 vnet_update_l2_len (b0);
735 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
736 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
737 sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
740 stats_n_packets += 1;
741 stats_n_bytes += len0;
743 /* Batch stats increment on the same geneve tunnel so counter
744 is not incremented per packet */
745 if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
747 stats_n_packets -= 1;
748 stats_n_bytes -= len0;
750 vlib_increment_combined_counter
751 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
752 thread_index, stats_sw_if_index,
753 stats_n_packets, stats_n_bytes);
755 stats_n_bytes = len0;
756 stats_sw_if_index = sw_if_index0;
760 b0->error = error0 ? node->errors[error0] : 0;
762 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
764 geneve_rx_trace_t *tr
765 = vlib_add_trace (vm, node, b0, sizeof (*tr));
766 tr->next_index = next0;
768 tr->tunnel_index = tunnel_index0;
769 tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
771 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
772 to_next, n_left_to_next,
776 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
778 /* Do we still need this now that tunnel tx stats is kept? */
779 vlib_node_increment_counter (vm, is_ip4 ?
781 index : geneve6_input_node.index,
782 GENEVE_ERROR_DECAPSULATED, pkts_decapsulated);
784 /* Increment any remaining batch stats */
787 vlib_increment_combined_counter
788 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
789 thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
790 node->runtime_data[0] = stats_sw_if_index;
793 return from_frame->n_vectors;
796 VLIB_NODE_FN (geneve4_input_node) (vlib_main_t * vm,
797 vlib_node_runtime_t * node,
798 vlib_frame_t * from_frame)
800 return geneve_input (vm, node, from_frame, /* is_ip4 */ 1);
803 VLIB_NODE_FN (geneve6_input_node) (vlib_main_t * vm,
804 vlib_node_runtime_t * node,
805 vlib_frame_t * from_frame)
807 return geneve_input (vm, node, from_frame, /* is_ip4 */ 0);
810 static char *geneve_error_strings[] = {
811 #define geneve_error(n,s) s,
812 #include <vnet/geneve/geneve_error.def>
818 VLIB_REGISTER_NODE (geneve4_input_node) = {
819 .name = "geneve4-input",
820 /* Takes a vector of packets. */
821 .vector_size = sizeof (u32),
822 .n_errors = GENEVE_N_ERROR,
823 .error_strings = geneve_error_strings,
824 .n_next_nodes = GENEVE_INPUT_N_NEXT,
826 #define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
827 foreach_geneve_input_next
831 //temp .format_buffer = format_geneve_header,
832 .format_trace = format_geneve_rx_trace,
833 // $$$$ .unformat_buffer = unformat_geneve_header,
836 VLIB_REGISTER_NODE (geneve6_input_node) = {
837 .name = "geneve6-input",
838 /* Takes a vector of packets. */
839 .vector_size = sizeof (u32),
840 .n_errors = GENEVE_N_ERROR,
841 .error_strings = geneve_error_strings,
842 .n_next_nodes = GENEVE_INPUT_N_NEXT,
844 #define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
845 foreach_geneve_input_next
848 //temp .format_buffer = format_geneve_header,
849 .format_trace = format_geneve_rx_trace,
850 // $$$$ .unformat_buffer = unformat_geneve_header,
856 IP_GENEVE_BYPASS_NEXT_DROP,
857 IP_GENEVE_BYPASS_NEXT_GENEVE,
858 IP_GENEVE_BYPASS_N_NEXT,
859 } ip_vxan_bypass_next_t;
862 ip_geneve_bypass_inline (vlib_main_t * vm,
863 vlib_node_runtime_t * node,
864 vlib_frame_t * frame, u32 is_ip4)
866 geneve_main_t *vxm = &geneve_main;
867 u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
868 vlib_node_runtime_t *error_node =
869 vlib_node_get_runtime (vm, ip4_input_node.index);
870 ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */
871 ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */
873 from = vlib_frame_vector_args (frame);
874 n_left_from = frame->n_vectors;
875 next_index = node->cached_next_index;
877 if (node->flags & VLIB_NODE_FLAG_TRACE)
878 ip4_forward_next_trace (vm, node, frame, VLIB_TX);
883 ip6_address_set_zero (&addr6);
885 while (n_left_from > 0)
887 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
889 while (n_left_from >= 4 && n_left_to_next >= 2)
891 vlib_buffer_t *b0, *b1;
892 ip4_header_t *ip40, *ip41;
893 ip6_header_t *ip60, *ip61;
894 udp_header_t *udp0, *udp1;
895 u32 bi0, ip_len0, udp_len0, flags0, next0;
896 u32 bi1, ip_len1, udp_len1, flags1, next1;
897 i32 len_diff0, len_diff1;
898 u8 error0, good_udp0, proto0;
899 u8 error1, good_udp1, proto1;
901 /* Prefetch next iteration. */
903 vlib_buffer_t *p2, *p3;
905 p2 = vlib_get_buffer (vm, from[2]);
906 p3 = vlib_get_buffer (vm, from[3]);
908 vlib_prefetch_buffer_header (p2, LOAD);
909 vlib_prefetch_buffer_header (p3, LOAD);
911 CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
912 CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
915 bi0 = to_next[0] = from[0];
916 bi1 = to_next[1] = from[1];
922 b0 = vlib_get_buffer (vm, bi0);
923 b1 = vlib_get_buffer (vm, bi1);
926 ip40 = vlib_buffer_get_current (b0);
927 ip41 = vlib_buffer_get_current (b1);
931 ip60 = vlib_buffer_get_current (b0);
932 ip61 = vlib_buffer_get_current (b1);
935 /* Setup packet for next IP feature */
936 vnet_feature_next (&next0, b0);
937 vnet_feature_next (&next1, b1);
941 /* Treat IP frag packets as "experimental" protocol for now
942 until support of IP frag reassembly is implemented */
943 proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
944 proto1 = ip4_is_fragment (ip41) ? 0xfe : ip41->protocol;
948 proto0 = ip60->protocol;
949 proto1 = ip61->protocol;
952 /* Process packet 0 */
953 if (proto0 != IP_PROTOCOL_UDP)
954 goto exit0; /* not UDP packet */
957 udp0 = ip4_next_header (ip40);
959 udp0 = ip6_next_header (ip60);
961 if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
962 goto exit0; /* not GENEVE packet */
964 /* Validate DIP against VTEPs */
967 if (addr4.as_u32 != ip40->dst_address.as_u32)
969 if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
970 goto exit0; /* no local VTEP for GENEVE packet */
971 addr4 = ip40->dst_address;
976 if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
978 if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
979 goto exit0; /* no local VTEP for GENEVE packet */
980 addr6 = ip60->dst_address;
985 good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
987 /* Don't verify UDP checksum for packets with explicit zero checksum. */
988 good_udp0 |= udp0->checksum == 0;
990 /* Verify UDP length */
992 ip_len0 = clib_net_to_host_u16 (ip40->length);
994 ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
995 udp_len0 = clib_net_to_host_u16 (udp0->length);
996 len_diff0 = ip_len0 - udp_len0;
998 /* Verify UDP checksum */
999 if (PREDICT_FALSE (!good_udp0))
1001 if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1004 flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1006 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1008 (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1014 error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1015 error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1019 error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1020 error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1024 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1025 b0->error = error0 ? error_node->errors[error0] : 0;
1027 /* geneve-input node expect current at GENEVE header */
1029 vlib_buffer_advance (b0,
1030 sizeof (ip4_header_t) +
1031 sizeof (udp_header_t));
1033 vlib_buffer_advance (b0,
1034 sizeof (ip6_header_t) +
1035 sizeof (udp_header_t));
1038 /* Process packet 1 */
1039 if (proto1 != IP_PROTOCOL_UDP)
1040 goto exit1; /* not UDP packet */
1043 udp1 = ip4_next_header (ip41);
1045 udp1 = ip6_next_header (ip61);
1047 if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
1048 goto exit1; /* not GENEVE packet */
1050 /* Validate DIP against VTEPs */
1053 if (addr4.as_u32 != ip41->dst_address.as_u32)
1055 if (!hash_get (vxm->vtep4, ip41->dst_address.as_u32))
1056 goto exit1; /* no local VTEP for GENEVE packet */
1057 addr4 = ip41->dst_address;
1062 if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
1064 if (!hash_get_mem (vxm->vtep6, &ip61->dst_address))
1065 goto exit1; /* no local VTEP for GENEVE packet */
1066 addr6 = ip61->dst_address;
1071 good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1073 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1074 good_udp1 |= udp1->checksum == 0;
1076 /* Verify UDP length */
1078 ip_len1 = clib_net_to_host_u16 (ip41->length);
1080 ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
1081 udp_len1 = clib_net_to_host_u16 (udp1->length);
1082 len_diff1 = ip_len1 - udp_len1;
1084 /* Verify UDP checksum */
1085 if (PREDICT_FALSE (!good_udp1))
1087 if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1090 flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
1092 flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
1094 (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1100 error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1101 error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
1105 error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1106 error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
1110 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1111 b1->error = error1 ? error_node->errors[error1] : 0;
1113 /* geneve-input node expect current at GENEVE header */
1115 vlib_buffer_advance (b1,
1116 sizeof (ip4_header_t) +
1117 sizeof (udp_header_t));
1119 vlib_buffer_advance (b1,
1120 sizeof (ip6_header_t) +
1121 sizeof (udp_header_t));
1124 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
1125 to_next, n_left_to_next,
1126 bi0, bi1, next0, next1);
1129 while (n_left_from > 0 && n_left_to_next > 0)
1135 u32 bi0, ip_len0, udp_len0, flags0, next0;
1137 u8 error0, good_udp0, proto0;
1139 bi0 = to_next[0] = from[0];
1143 n_left_to_next -= 1;
1145 b0 = vlib_get_buffer (vm, bi0);
1147 ip40 = vlib_buffer_get_current (b0);
1149 ip60 = vlib_buffer_get_current (b0);
1151 /* Setup packet for next IP feature */
1152 vnet_feature_next (&next0, b0);
1155 /* Treat IP4 frag packets as "experimental" protocol for now
1156 until support of IP frag reassembly is implemented */
1157 proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
1159 proto0 = ip60->protocol;
1161 if (proto0 != IP_PROTOCOL_UDP)
1162 goto exit; /* not UDP packet */
1165 udp0 = ip4_next_header (ip40);
1167 udp0 = ip6_next_header (ip60);
1169 if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
1170 goto exit; /* not GENEVE packet */
1172 /* Validate DIP against VTEPs */
1175 if (addr4.as_u32 != ip40->dst_address.as_u32)
1177 if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
1178 goto exit; /* no local VTEP for GENEVE packet */
1179 addr4 = ip40->dst_address;
1184 if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
1186 if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
1187 goto exit; /* no local VTEP for GENEVE packet */
1188 addr6 = ip60->dst_address;
1193 good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1195 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1196 good_udp0 |= udp0->checksum == 0;
1198 /* Verify UDP length */
1200 ip_len0 = clib_net_to_host_u16 (ip40->length);
1202 ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
1203 udp_len0 = clib_net_to_host_u16 (udp0->length);
1204 len_diff0 = ip_len0 - udp_len0;
1206 /* Verify UDP checksum */
1207 if (PREDICT_FALSE (!good_udp0))
1209 if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1212 flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1214 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1216 (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1222 error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1223 error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1227 error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1228 error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1232 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1233 b0->error = error0 ? error_node->errors[error0] : 0;
1235 /* geneve-input node expect current at GENEVE header */
1237 vlib_buffer_advance (b0,
1238 sizeof (ip4_header_t) +
1239 sizeof (udp_header_t));
1241 vlib_buffer_advance (b0,
1242 sizeof (ip6_header_t) +
1243 sizeof (udp_header_t));
1246 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1247 to_next, n_left_to_next,
1251 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1254 return frame->n_vectors;
1257 VLIB_NODE_FN (ip4_geneve_bypass_node) (vlib_main_t * vm,
1258 vlib_node_runtime_t * node,
1259 vlib_frame_t * frame)
1261 return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
1265 VLIB_REGISTER_NODE (ip4_geneve_bypass_node) =
1267 .name = "ip4-geneve-bypass",.vector_size =
1268 sizeof (u32),.n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
1270 [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
1271 [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve4-input",}
1272 ,.format_buffer = format_ip4_header,.format_trace =
1273 format_ip4_forward_next_trace,};
1275 #ifndef CLIB_MARCH_VARIANT
1276 /* Dummy init function to get us linked in. */
1277 clib_error_t *ip4_geneve_bypass_init (vlib_main_t * vm)
1282 VLIB_INIT_FUNCTION (ip4_geneve_bypass_init);
1284 #endif /* CLIB_MARCH_VARIANT */
1286 VLIB_NODE_FN (ip6_geneve_bypass_node) (vlib_main_t * vm,
1287 vlib_node_runtime_t * node,
1288 vlib_frame_t * frame)
1290 return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
1294 VLIB_REGISTER_NODE (ip6_geneve_bypass_node) =
1296 .name = "ip6-geneve-bypass",.vector_size =
1297 sizeof (u32),.n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
1299 [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
1300 [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve6-input",}
1301 ,.format_buffer = format_ip6_header,.format_trace =
1302 format_ip6_forward_next_trace,};
1305 #ifndef CLIB_MARCH_VARIANT
1306 /* Dummy init function to get us linked in. */
1308 ip6_geneve_bypass_init (vlib_main_t * vm)
1313 VLIB_INIT_FUNCTION (ip6_geneve_bypass_init);
1314 #endif /* CLIB_MARCH_VARIANT */
1317 * fd.io coding-style-patch-verification: ON
1320 * eval: (c-set-style "gnu")