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;
86 last_key4.as_u64 = ~0;
88 clib_memset (&last_key6, 0xff, sizeof (last_key6));
90 from = vlib_frame_vector_args (from_frame);
91 n_left_from = from_frame->n_vectors;
93 next_index = node->cached_next_index;
94 stats_sw_if_index = node->runtime_data[0];
95 stats_n_packets = stats_n_bytes = 0;
97 while (n_left_from > 0)
101 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
102 while (n_left_from >= 4 && n_left_to_next >= 2)
105 vlib_buffer_t *b0, *b1;
107 ip4_header_t *ip4_0, *ip4_1;
108 ip6_header_t *ip6_0, *ip6_1;
109 geneve_header_t *geneve0, *geneve1;
111 u32 tunnel_index0, tunnel_index1;
112 geneve_tunnel_t *t0, *t1, *mt0 = NULL, *mt1 = NULL;
113 geneve4_tunnel_key_t key4_0, key4_1;
114 geneve6_tunnel_key_t key6_0, key6_1;
116 u32 sw_if_index0, sw_if_index1, len0, len1;
118 /* Prefetch next iteration. */
120 vlib_buffer_t *p2, *p3;
122 p2 = vlib_get_buffer (vm, from[2]);
123 p3 = vlib_get_buffer (vm, from[3]);
125 vlib_prefetch_buffer_header (p2, LOAD);
126 vlib_prefetch_buffer_header (p3, LOAD);
128 CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
129 CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
141 b0 = vlib_get_buffer (vm, bi0);
142 b1 = vlib_get_buffer (vm, bi1);
144 /* udp leaves current_data pointing at the geneve header */
145 geneve0 = vlib_buffer_get_current (b0);
146 geneve1 = vlib_buffer_get_current (b1);
148 vnet_geneve_hdr_1word_ntoh (geneve0);
149 vnet_geneve_hdr_1word_ntoh (geneve1);
154 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
156 (b1, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
157 ip4_0 = vlib_buffer_get_current (b0);
158 ip4_1 = vlib_buffer_get_current (b1);
163 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
165 (b1, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
166 ip6_0 = vlib_buffer_get_current (b0);
167 ip6_1 = vlib_buffer_get_current (b1);
170 /* pop (ip, udp, geneve) */
175 sizeof (*ip4_0) + sizeof (udp_header_t) +
176 GENEVE_BASE_HEADER_LENGTH +
177 vnet_get_geneve_options_len (geneve0));
178 vlib_buffer_advance (b1,
179 sizeof (*ip4_1) + sizeof (udp_header_t) +
180 GENEVE_BASE_HEADER_LENGTH +
181 vnet_get_geneve_options_len (geneve1));
187 sizeof (*ip6_0) + sizeof (udp_header_t) +
188 GENEVE_BASE_HEADER_LENGTH +
189 vnet_get_geneve_options_len (geneve0));
190 vlib_buffer_advance (b0,
191 sizeof (*ip6_0) + sizeof (udp_header_t) +
192 GENEVE_BASE_HEADER_LENGTH +
193 vnet_get_geneve_options_len (geneve1));
203 (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
205 error0 = GENEVE_ERROR_BAD_FLAGS;
206 next0 = GENEVE_INPUT_NEXT_DROP;
209 #if SUPPORT_OPTIONS_HEADER==1
210 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
212 error0 = GENEVE_ERROR_BAD_FLAGS;
213 next0 = GENEVE_INPUT_NEXT_DROP;
219 key4_0.remote = ip4_0->src_address.as_u32;
220 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
222 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
223 if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
225 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
226 if (PREDICT_FALSE (p0 == NULL))
228 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
229 next0 = GENEVE_INPUT_NEXT_DROP;
232 last_key4.as_u64 = key4_0.as_u64;
233 tunnel_index0 = last_tunnel_index = p0[0];
236 tunnel_index0 = last_tunnel_index;
237 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
239 /* Validate GENEVE tunnel encap-fib index against packet */
240 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
242 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
243 next0 = GENEVE_INPUT_NEXT_DROP;
247 /* Validate GENEVE tunnel SIP against packet DIP */
249 (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
250 goto next0; /* valid packet */
252 (ip4_address_is_multicast (&ip4_0->dst_address)))
254 key4_0.remote = ip4_0->dst_address.as_u32;
255 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
256 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
257 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
258 if (PREDICT_TRUE (p0 != NULL))
260 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
261 goto next0; /* valid packet */
264 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
265 next0 = GENEVE_INPUT_NEXT_DROP;
271 key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
272 key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
273 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
275 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
277 (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
279 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
280 if (PREDICT_FALSE (p0 == NULL))
282 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
283 next0 = GENEVE_INPUT_NEXT_DROP;
286 clib_memcpy_fast (&last_key6, &key6_0, sizeof (key6_0));
287 tunnel_index0 = last_tunnel_index = p0[0];
290 tunnel_index0 = last_tunnel_index;
291 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
293 /* Validate GENEVE tunnel encap-fib index against packet */
294 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
296 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
297 next0 = GENEVE_INPUT_NEXT_DROP;
301 /* Validate GENEVE tunnel SIP against packet DIP */
302 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
304 goto next0; /* valid packet */
306 (ip6_address_is_multicast (&ip6_0->dst_address)))
308 key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
309 key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
310 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
311 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
312 if (PREDICT_TRUE (p0 != NULL))
314 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
315 goto next0; /* valid packet */
318 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
319 next0 = GENEVE_INPUT_NEXT_DROP;
324 next0 = t0->decap_next_index;
325 sw_if_index0 = t0->sw_if_index;
326 len0 = vlib_buffer_length_in_chain (vm, b0);
328 /* Required to make the l2 tag push / pop code work on l2 subifs */
329 if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
330 vnet_update_l2_len (b0);
332 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
333 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
334 sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
337 stats_n_packets += 1;
338 stats_n_bytes += len0;
340 /* Batch stats increment on the same geneve tunnel so counter
341 is not incremented per packet */
342 if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
344 stats_n_packets -= 1;
345 stats_n_bytes -= len0;
347 vlib_increment_combined_counter
348 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
349 thread_index, stats_sw_if_index,
350 stats_n_packets, stats_n_bytes);
352 stats_n_bytes = len0;
353 stats_sw_if_index = sw_if_index0;
357 b0->error = error0 ? node->errors[error0] : 0;
359 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
361 geneve_rx_trace_t *tr
362 = vlib_add_trace (vm, node, b0, sizeof (*tr));
363 tr->next_index = next0;
365 tr->tunnel_index = tunnel_index0;
366 tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
370 (vnet_get_geneve_version (geneve1) != GENEVE_VERSION))
372 error1 = GENEVE_ERROR_BAD_FLAGS;
373 next1 = GENEVE_INPUT_NEXT_DROP;
376 #if SUPPORT_OPTIONS_HEADER==1
377 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve1) == 1))
379 error1 = GENEVE_ERROR_BAD_FLAGS;
380 next1 = GENEVE_INPUT_NEXT_DROP;
386 key4_1.remote = ip4_1->src_address.as_u32;
387 key4_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
389 /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
390 if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64))
392 p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
393 if (PREDICT_FALSE (p1 == NULL))
395 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
396 next1 = GENEVE_INPUT_NEXT_DROP;
399 last_key4.as_u64 = key4_1.as_u64;
400 tunnel_index1 = last_tunnel_index = p1[0];
403 tunnel_index1 = last_tunnel_index;
404 t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
406 /* Validate GENEVE tunnel encap-fib index against packet */
407 if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
409 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
410 next1 = GENEVE_INPUT_NEXT_DROP;
414 /* Validate GENEVE tunnel SIP against packet DIP */
416 (ip4_1->dst_address.as_u32 == t1->local.ip4.as_u32))
417 goto next1; /* valid packet */
419 (ip4_address_is_multicast (&ip4_1->dst_address)))
421 key4_1.remote = ip4_1->dst_address.as_u32;
422 key4_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
423 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
424 p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
425 if (PREDICT_TRUE (p1 != NULL))
427 mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
428 goto next1; /* valid packet */
431 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
432 next1 = GENEVE_INPUT_NEXT_DROP;
438 key6_1.remote.as_u64[0] = ip6_1->src_address.as_u64[0];
439 key6_1.remote.as_u64[1] = ip6_1->src_address.as_u64[1];
440 key6_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
442 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
444 (memcmp (&key6_1, &last_key6, sizeof (last_key6)) != 0))
446 p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
448 if (PREDICT_FALSE (p1 == NULL))
450 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
451 next1 = GENEVE_INPUT_NEXT_DROP;
455 clib_memcpy_fast (&last_key6, &key6_1, sizeof (key6_1));
456 tunnel_index1 = last_tunnel_index = p1[0];
459 tunnel_index1 = last_tunnel_index;
460 t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
462 /* Validate GENEVE tunnel encap-fib index against packet */
463 if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
465 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
466 next1 = GENEVE_INPUT_NEXT_DROP;
470 /* Validate GENEVE tunnel SIP against packet DIP */
471 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_1->dst_address,
473 goto next1; /* valid packet */
475 (ip6_address_is_multicast (&ip6_1->dst_address)))
477 key6_1.remote.as_u64[0] = ip6_1->dst_address.as_u64[0];
478 key6_1.remote.as_u64[1] = ip6_1->dst_address.as_u64[1];
479 key6_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
480 p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
481 if (PREDICT_TRUE (p1 != NULL))
483 mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
484 goto next1; /* valid packet */
487 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
488 next1 = GENEVE_INPUT_NEXT_DROP;
493 next1 = t1->decap_next_index;
494 sw_if_index1 = t1->sw_if_index;
495 len1 = vlib_buffer_length_in_chain (vm, b1);
497 /* Required to make the l2 tag push / pop code work on l2 subifs */
498 if (PREDICT_TRUE (next1 == GENEVE_INPUT_NEXT_L2_INPUT))
499 vnet_update_l2_len (b1);
501 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
502 vnet_buffer (b1)->sw_if_index[VLIB_RX] = sw_if_index1;
503 sw_if_index1 = (mt1) ? mt1->sw_if_index : sw_if_index1;
506 stats_n_packets += 1;
507 stats_n_bytes += len1;
509 /* Batch stats increment on the same geneve tunnel so counter
510 is not incremented per packet */
511 if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
513 stats_n_packets -= 1;
514 stats_n_bytes -= len1;
516 vlib_increment_combined_counter
517 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
518 thread_index, stats_sw_if_index,
519 stats_n_packets, stats_n_bytes);
521 stats_n_bytes = len1;
522 stats_sw_if_index = sw_if_index1;
526 b1->error = error1 ? node->errors[error1] : 0;
528 if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
530 geneve_rx_trace_t *tr
531 = vlib_add_trace (vm, node, b1, sizeof (*tr));
532 tr->next_index = next1;
534 tr->tunnel_index = tunnel_index1;
535 tr->vni_rsvd = vnet_get_geneve_vni (geneve1);
538 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
539 to_next, n_left_to_next,
540 bi0, bi1, next0, next1);
543 while (n_left_from > 0 && n_left_to_next > 0)
550 geneve_header_t *geneve0;
553 geneve_tunnel_t *t0, *mt0 = NULL;
554 geneve4_tunnel_key_t key4_0;
555 geneve6_tunnel_key_t key6_0;
557 u32 sw_if_index0, len0;
566 b0 = vlib_get_buffer (vm, bi0);
568 /* udp leaves current_data pointing at the geneve header */
569 geneve0 = vlib_buffer_get_current (b0);
570 vnet_geneve_hdr_1word_ntoh (geneve0);
575 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
576 ip4_0 = vlib_buffer_get_current (b0);
581 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
582 ip6_0 = vlib_buffer_get_current (b0);
585 /* pop (ip, udp, geneve) */
590 sizeof (*ip4_0) + sizeof (udp_header_t) +
591 GENEVE_BASE_HEADER_LENGTH +
592 vnet_get_geneve_options_len (geneve0));
598 sizeof (*ip6_0) + sizeof (udp_header_t) +
599 GENEVE_BASE_HEADER_LENGTH +
600 vnet_get_geneve_options_len (geneve0));
607 (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
609 error0 = GENEVE_ERROR_BAD_FLAGS;
610 next0 = GENEVE_INPUT_NEXT_DROP;
613 #if SUPPORT_OPTIONS_HEADER==1
614 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
616 error0 = GENEVE_ERROR_BAD_FLAGS;
617 next0 = GENEVE_INPUT_NEXT_DROP;
623 key4_0.remote = ip4_0->src_address.as_u32;
624 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
626 /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
627 if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
629 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
630 if (PREDICT_FALSE (p0 == NULL))
632 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
633 next0 = GENEVE_INPUT_NEXT_DROP;
636 last_key4.as_u64 = key4_0.as_u64;
637 tunnel_index0 = last_tunnel_index = p0[0];
640 tunnel_index0 = last_tunnel_index;
641 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
643 /* Validate GENEVE tunnel encap-fib index agaist packet */
644 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
646 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
647 next0 = GENEVE_INPUT_NEXT_DROP;
651 /* Validate GENEVE tunnel SIP against packet DIP */
653 (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
654 goto next00; /* valid packet */
656 (ip4_address_is_multicast (&ip4_0->dst_address)))
658 key4_0.remote = ip4_0->dst_address.as_u32;
659 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
660 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
661 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
662 if (PREDICT_TRUE (p0 != NULL))
664 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
665 goto next00; /* valid packet */
668 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
669 next0 = GENEVE_INPUT_NEXT_DROP;
675 key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
676 key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
677 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
679 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
681 (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
683 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
684 if (PREDICT_FALSE (p0 == NULL))
686 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
687 next0 = GENEVE_INPUT_NEXT_DROP;
690 clib_memcpy_fast (&last_key6, &key6_0, sizeof (key6_0));
691 tunnel_index0 = last_tunnel_index = p0[0];
694 tunnel_index0 = last_tunnel_index;
695 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
697 /* Validate GENEVE tunnel encap-fib index agaist packet */
698 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
700 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
701 next0 = GENEVE_INPUT_NEXT_DROP;
705 /* Validate GENEVE tunnel SIP against packet DIP */
706 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
708 goto next00; /* valid packet */
710 (ip6_address_is_multicast (&ip6_0->dst_address)))
712 key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
713 key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
714 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
715 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
716 if (PREDICT_TRUE (p0 != NULL))
718 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
719 goto next00; /* valid packet */
722 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
723 next0 = GENEVE_INPUT_NEXT_DROP;
728 next0 = t0->decap_next_index;
729 sw_if_index0 = t0->sw_if_index;
730 len0 = vlib_buffer_length_in_chain (vm, b0);
732 /* Required to make the l2 tag push / pop code work on l2 subifs */
733 if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
734 vnet_update_l2_len (b0);
736 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
737 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
738 sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
741 stats_n_packets += 1;
742 stats_n_bytes += len0;
744 /* Batch stats increment on the same geneve tunnel so counter
745 is not incremented per packet */
746 if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
748 stats_n_packets -= 1;
749 stats_n_bytes -= len0;
751 vlib_increment_combined_counter
752 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
753 thread_index, stats_sw_if_index,
754 stats_n_packets, stats_n_bytes);
756 stats_n_bytes = len0;
757 stats_sw_if_index = sw_if_index0;
761 b0->error = error0 ? node->errors[error0] : 0;
763 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
765 geneve_rx_trace_t *tr
766 = vlib_add_trace (vm, node, b0, sizeof (*tr));
767 tr->next_index = next0;
769 tr->tunnel_index = tunnel_index0;
770 tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
772 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
773 to_next, n_left_to_next,
777 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
779 /* Do we still need this now that tunnel tx stats is kept? */
780 vlib_node_increment_counter (vm, is_ip4 ?
782 index : geneve6_input_node.index,
783 GENEVE_ERROR_DECAPSULATED, pkts_decapsulated);
785 /* Increment any remaining batch stats */
788 vlib_increment_combined_counter
789 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
790 thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
791 node->runtime_data[0] = stats_sw_if_index;
794 return from_frame->n_vectors;
797 VLIB_NODE_FN (geneve4_input_node) (vlib_main_t * vm,
798 vlib_node_runtime_t * node,
799 vlib_frame_t * from_frame)
801 return geneve_input (vm, node, from_frame, /* is_ip4 */ 1);
804 VLIB_NODE_FN (geneve6_input_node) (vlib_main_t * vm,
805 vlib_node_runtime_t * node,
806 vlib_frame_t * from_frame)
808 return geneve_input (vm, node, from_frame, /* is_ip4 */ 0);
811 static char *geneve_error_strings[] = {
812 #define geneve_error(n,s) s,
813 #include <vnet/geneve/geneve_error.def>
819 VLIB_REGISTER_NODE (geneve4_input_node) = {
820 .name = "geneve4-input",
821 /* Takes a vector of packets. */
822 .vector_size = sizeof (u32),
823 .n_errors = GENEVE_N_ERROR,
824 .error_strings = geneve_error_strings,
825 .n_next_nodes = GENEVE_INPUT_N_NEXT,
827 #define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
828 foreach_geneve_input_next
832 //temp .format_buffer = format_geneve_header,
833 .format_trace = format_geneve_rx_trace,
834 // $$$$ .unformat_buffer = unformat_geneve_header,
837 VLIB_REGISTER_NODE (geneve6_input_node) = {
838 .name = "geneve6-input",
839 /* Takes a vector of packets. */
840 .vector_size = sizeof (u32),
841 .n_errors = GENEVE_N_ERROR,
842 .error_strings = geneve_error_strings,
843 .n_next_nodes = GENEVE_INPUT_N_NEXT,
845 #define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
846 foreach_geneve_input_next
849 //temp .format_buffer = format_geneve_header,
850 .format_trace = format_geneve_rx_trace,
851 // $$$$ .unformat_buffer = unformat_geneve_header,
857 IP_GENEVE_BYPASS_NEXT_DROP,
858 IP_GENEVE_BYPASS_NEXT_GENEVE,
859 IP_GENEVE_BYPASS_N_NEXT,
860 } ip_vxan_bypass_next_t;
863 ip_geneve_bypass_inline (vlib_main_t * vm,
864 vlib_node_runtime_t * node,
865 vlib_frame_t * frame, u32 is_ip4)
867 geneve_main_t *vxm = &geneve_main;
868 u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
869 vlib_node_runtime_t *error_node =
870 vlib_node_get_runtime (vm, ip4_input_node.index);
871 ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */
872 ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */
874 from = vlib_frame_vector_args (frame);
875 n_left_from = frame->n_vectors;
876 next_index = node->cached_next_index;
878 if (node->flags & VLIB_NODE_FLAG_TRACE)
879 ip4_forward_next_trace (vm, node, frame, VLIB_TX);
884 ip6_address_set_zero (&addr6);
886 while (n_left_from > 0)
888 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
890 while (n_left_from >= 4 && n_left_to_next >= 2)
892 vlib_buffer_t *b0, *b1;
893 ip4_header_t *ip40, *ip41;
894 ip6_header_t *ip60, *ip61;
895 udp_header_t *udp0, *udp1;
896 u32 bi0, ip_len0, udp_len0, flags0, next0;
897 u32 bi1, ip_len1, udp_len1, flags1, next1;
898 i32 len_diff0, len_diff1;
899 u8 error0, good_udp0, proto0;
900 u8 error1, good_udp1, proto1;
902 /* Prefetch next iteration. */
904 vlib_buffer_t *p2, *p3;
906 p2 = vlib_get_buffer (vm, from[2]);
907 p3 = vlib_get_buffer (vm, from[3]);
909 vlib_prefetch_buffer_header (p2, LOAD);
910 vlib_prefetch_buffer_header (p3, LOAD);
912 CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
913 CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
916 bi0 = to_next[0] = from[0];
917 bi1 = to_next[1] = from[1];
923 b0 = vlib_get_buffer (vm, bi0);
924 b1 = vlib_get_buffer (vm, bi1);
927 ip40 = vlib_buffer_get_current (b0);
928 ip41 = vlib_buffer_get_current (b1);
932 ip60 = vlib_buffer_get_current (b0);
933 ip61 = vlib_buffer_get_current (b1);
936 /* Setup packet for next IP feature */
937 vnet_feature_next (&next0, b0);
938 vnet_feature_next (&next1, b1);
942 /* Treat IP frag packets as "experimental" protocol for now
943 until support of IP frag reassembly is implemented */
944 proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
945 proto1 = ip4_is_fragment (ip41) ? 0xfe : ip41->protocol;
949 proto0 = ip60->protocol;
950 proto1 = ip61->protocol;
953 /* Process packet 0 */
954 if (proto0 != IP_PROTOCOL_UDP)
955 goto exit0; /* not UDP packet */
958 udp0 = ip4_next_header (ip40);
960 udp0 = ip6_next_header (ip60);
962 if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
963 goto exit0; /* not GENEVE packet */
965 /* Validate DIP against VTEPs */
968 if (addr4.as_u32 != ip40->dst_address.as_u32)
970 if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
971 goto exit0; /* no local VTEP for GENEVE packet */
972 addr4 = ip40->dst_address;
977 if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
979 if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
980 goto exit0; /* no local VTEP for GENEVE packet */
981 addr6 = ip60->dst_address;
986 good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
988 /* Don't verify UDP checksum for packets with explicit zero checksum. */
989 good_udp0 |= udp0->checksum == 0;
991 /* Verify UDP length */
993 ip_len0 = clib_net_to_host_u16 (ip40->length);
995 ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
996 udp_len0 = clib_net_to_host_u16 (udp0->length);
997 len_diff0 = ip_len0 - udp_len0;
999 /* Verify UDP checksum */
1000 if (PREDICT_FALSE (!good_udp0))
1002 if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1005 flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1007 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1009 (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1015 error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1016 error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1020 error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1021 error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1025 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1026 b0->error = error0 ? error_node->errors[error0] : 0;
1028 /* geneve-input node expect current at GENEVE header */
1030 vlib_buffer_advance (b0,
1031 sizeof (ip4_header_t) +
1032 sizeof (udp_header_t));
1034 vlib_buffer_advance (b0,
1035 sizeof (ip6_header_t) +
1036 sizeof (udp_header_t));
1039 /* Process packet 1 */
1040 if (proto1 != IP_PROTOCOL_UDP)
1041 goto exit1; /* not UDP packet */
1044 udp1 = ip4_next_header (ip41);
1046 udp1 = ip6_next_header (ip61);
1048 if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
1049 goto exit1; /* not GENEVE packet */
1051 /* Validate DIP against VTEPs */
1054 if (addr4.as_u32 != ip41->dst_address.as_u32)
1056 if (!hash_get (vxm->vtep4, ip41->dst_address.as_u32))
1057 goto exit1; /* no local VTEP for GENEVE packet */
1058 addr4 = ip41->dst_address;
1063 if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
1065 if (!hash_get_mem (vxm->vtep6, &ip61->dst_address))
1066 goto exit1; /* no local VTEP for GENEVE packet */
1067 addr6 = ip61->dst_address;
1072 good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1074 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1075 good_udp1 |= udp1->checksum == 0;
1077 /* Verify UDP length */
1079 ip_len1 = clib_net_to_host_u16 (ip41->length);
1081 ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
1082 udp_len1 = clib_net_to_host_u16 (udp1->length);
1083 len_diff1 = ip_len1 - udp_len1;
1085 /* Verify UDP checksum */
1086 if (PREDICT_FALSE (!good_udp1))
1088 if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1091 flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
1093 flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
1095 (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1101 error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1102 error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
1106 error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1107 error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
1111 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1112 b1->error = error1 ? error_node->errors[error1] : 0;
1114 /* geneve-input node expect current at GENEVE header */
1116 vlib_buffer_advance (b1,
1117 sizeof (ip4_header_t) +
1118 sizeof (udp_header_t));
1120 vlib_buffer_advance (b1,
1121 sizeof (ip6_header_t) +
1122 sizeof (udp_header_t));
1125 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
1126 to_next, n_left_to_next,
1127 bi0, bi1, next0, next1);
1130 while (n_left_from > 0 && n_left_to_next > 0)
1136 u32 bi0, ip_len0, udp_len0, flags0, next0;
1138 u8 error0, good_udp0, proto0;
1140 bi0 = to_next[0] = from[0];
1144 n_left_to_next -= 1;
1146 b0 = vlib_get_buffer (vm, bi0);
1148 ip40 = vlib_buffer_get_current (b0);
1150 ip60 = vlib_buffer_get_current (b0);
1152 /* Setup packet for next IP feature */
1153 vnet_feature_next (&next0, b0);
1156 /* Treat IP4 frag packets as "experimental" protocol for now
1157 until support of IP frag reassembly is implemented */
1158 proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
1160 proto0 = ip60->protocol;
1162 if (proto0 != IP_PROTOCOL_UDP)
1163 goto exit; /* not UDP packet */
1166 udp0 = ip4_next_header (ip40);
1168 udp0 = ip6_next_header (ip60);
1170 if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
1171 goto exit; /* not GENEVE packet */
1173 /* Validate DIP against VTEPs */
1176 if (addr4.as_u32 != ip40->dst_address.as_u32)
1178 if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
1179 goto exit; /* no local VTEP for GENEVE packet */
1180 addr4 = ip40->dst_address;
1185 if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
1187 if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
1188 goto exit; /* no local VTEP for GENEVE packet */
1189 addr6 = ip60->dst_address;
1194 good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1196 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1197 good_udp0 |= udp0->checksum == 0;
1199 /* Verify UDP length */
1201 ip_len0 = clib_net_to_host_u16 (ip40->length);
1203 ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
1204 udp_len0 = clib_net_to_host_u16 (udp0->length);
1205 len_diff0 = ip_len0 - udp_len0;
1207 /* Verify UDP checksum */
1208 if (PREDICT_FALSE (!good_udp0))
1210 if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1213 flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1215 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1217 (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1223 error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1224 error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1228 error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1229 error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1233 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1234 b0->error = error0 ? error_node->errors[error0] : 0;
1236 /* geneve-input node expect current at GENEVE header */
1238 vlib_buffer_advance (b0,
1239 sizeof (ip4_header_t) +
1240 sizeof (udp_header_t));
1242 vlib_buffer_advance (b0,
1243 sizeof (ip6_header_t) +
1244 sizeof (udp_header_t));
1247 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1248 to_next, n_left_to_next,
1252 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1255 return frame->n_vectors;
1258 VLIB_NODE_FN (ip4_geneve_bypass_node) (vlib_main_t * vm,
1259 vlib_node_runtime_t * node,
1260 vlib_frame_t * frame)
1262 return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
1266 VLIB_REGISTER_NODE (ip4_geneve_bypass_node) =
1268 .name = "ip4-geneve-bypass",.vector_size =
1269 sizeof (u32),.n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
1271 [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
1272 [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve4-input",}
1273 ,.format_buffer = format_ip4_header,.format_trace =
1274 format_ip4_forward_next_trace,};
1276 #ifndef CLIB_MARCH_VARIANT
1277 /* Dummy init function to get us linked in. */
1278 clib_error_t *ip4_geneve_bypass_init (vlib_main_t * vm)
1283 VLIB_INIT_FUNCTION (ip4_geneve_bypass_init);
1285 #endif /* CLIB_MARCH_VARIANT */
1287 VLIB_NODE_FN (ip6_geneve_bypass_node) (vlib_main_t * vm,
1288 vlib_node_runtime_t * node,
1289 vlib_frame_t * frame)
1291 return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
1295 VLIB_REGISTER_NODE (ip6_geneve_bypass_node) =
1297 .name = "ip6-geneve-bypass",.vector_size =
1298 sizeof (u32),.n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
1300 [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
1301 [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve6-input",}
1302 ,.format_buffer = format_ip6_header,.format_trace =
1303 format_ip6_forward_next_trace,};
1306 #ifndef CLIB_MARCH_VARIANT
1307 /* Dummy init function to get us linked in. */
1309 ip6_geneve_bypass_init (vlib_main_t * vm)
1314 VLIB_INIT_FUNCTION (ip6_geneve_bypass_init);
1315 #endif /* CLIB_MARCH_VARIANT */
1318 * fd.io coding-style-patch-verification: ON
1321 * eval: (c-set-style "gnu")