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>
20 vlib_node_registration_t geneve4_input_node;
21 vlib_node_registration_t geneve6_input_node;
32 format_geneve_rx_trace (u8 * s, va_list * args)
34 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
35 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
36 geneve_rx_trace_t *t = va_arg (*args, geneve_rx_trace_t *);
38 if (t->tunnel_index != ~0)
42 "GENEVE decap from geneve_tunnel%d vni %d next %d error %d",
43 t->tunnel_index, t->vni_rsvd, t->next_index, t->error);
47 s = format (s, "GENEVE decap error - tunnel for vni %d does not exist",
54 validate_geneve_fib (vlib_buffer_t * b, geneve_tunnel_t * t, u32 is_ip4)
56 u32 fib_index, sw_if_index;
58 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
61 fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
62 vec_elt (ip4_main.fib_index_by_sw_if_index, sw_if_index) :
63 vnet_buffer (b)->sw_if_index[VLIB_TX];
65 fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
66 vec_elt (ip6_main.fib_index_by_sw_if_index, sw_if_index) :
67 vnet_buffer (b)->sw_if_index[VLIB_TX];
69 return (fib_index == t->encap_fib_index);
73 geneve_input (vlib_main_t * vm,
74 vlib_node_runtime_t * node,
75 vlib_frame_t * from_frame, u32 is_ip4)
77 u32 n_left_from, next_index, *from, *to_next;
78 geneve_main_t *vxm = &geneve_main;
79 vnet_main_t *vnm = vxm->vnet_main;
80 vnet_interface_main_t *im = &vnm->interface_main;
81 u32 last_tunnel_index = ~0;
82 geneve4_tunnel_key_t last_key4;
83 geneve6_tunnel_key_t last_key6;
84 u32 pkts_decapsulated = 0;
85 u32 thread_index = vlib_get_thread_index ();
86 u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
89 last_key4.as_u64 = ~0;
91 memset (&last_key6, 0xff, sizeof (last_key6));
93 from = vlib_frame_vector_args (from_frame);
94 n_left_from = from_frame->n_vectors;
96 next_index = node->cached_next_index;
97 stats_sw_if_index = node->runtime_data[0];
98 stats_n_packets = stats_n_bytes = 0;
100 while (n_left_from > 0)
104 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
105 while (n_left_from >= 4 && n_left_to_next >= 2)
108 vlib_buffer_t *b0, *b1;
110 ip4_header_t *ip4_0, *ip4_1;
111 ip6_header_t *ip6_0, *ip6_1;
112 geneve_header_t *geneve0, *geneve1;
114 u32 tunnel_index0, tunnel_index1;
115 geneve_tunnel_t *t0, *t1, *mt0 = NULL, *mt1 = NULL;
116 geneve4_tunnel_key_t key4_0, key4_1;
117 geneve6_tunnel_key_t key6_0, key6_1;
119 u32 sw_if_index0, sw_if_index1, len0, len1;
121 /* Prefetch next iteration. */
123 vlib_buffer_t *p2, *p3;
125 p2 = vlib_get_buffer (vm, from[2]);
126 p3 = vlib_get_buffer (vm, from[3]);
128 vlib_prefetch_buffer_header (p2, LOAD);
129 vlib_prefetch_buffer_header (p3, LOAD);
131 CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
132 CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
144 b0 = vlib_get_buffer (vm, bi0);
145 b1 = vlib_get_buffer (vm, bi1);
147 /* udp leaves current_data pointing at the geneve header */
148 geneve0 = vlib_buffer_get_current (b0);
149 geneve1 = vlib_buffer_get_current (b1);
151 vnet_geneve_hdr_1word_ntoh (geneve0);
152 vnet_geneve_hdr_1word_ntoh (geneve1);
157 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
159 (b1, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
160 ip4_0 = vlib_buffer_get_current (b0);
161 ip4_1 = vlib_buffer_get_current (b1);
166 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
168 (b1, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
169 ip6_0 = vlib_buffer_get_current (b0);
170 ip6_1 = vlib_buffer_get_current (b1);
173 /* pop (ip, udp, geneve) */
178 sizeof (*ip4_0) + sizeof (udp_header_t) +
179 GENEVE_BASE_HEADER_LENGTH +
180 vnet_get_geneve_options_len (geneve0));
181 vlib_buffer_advance (b1,
182 sizeof (*ip4_1) + sizeof (udp_header_t) +
183 GENEVE_BASE_HEADER_LENGTH +
184 vnet_get_geneve_options_len (geneve1));
190 sizeof (*ip6_0) + sizeof (udp_header_t) +
191 GENEVE_BASE_HEADER_LENGTH +
192 vnet_get_geneve_options_len (geneve0));
193 vlib_buffer_advance (b0,
194 sizeof (*ip6_0) + sizeof (udp_header_t) +
195 GENEVE_BASE_HEADER_LENGTH +
196 vnet_get_geneve_options_len (geneve1));
206 (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
208 error0 = GENEVE_ERROR_BAD_FLAGS;
209 next0 = GENEVE_INPUT_NEXT_DROP;
212 #if SUPPORT_OPTIONS_HEADER==1
213 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
215 error0 = GENEVE_ERROR_BAD_FLAGS;
216 next0 = GENEVE_INPUT_NEXT_DROP;
222 key4_0.remote = ip4_0->src_address.as_u32;
223 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
225 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
226 if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
228 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
229 if (PREDICT_FALSE (p0 == NULL))
231 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
232 next0 = GENEVE_INPUT_NEXT_DROP;
235 last_key4.as_u64 = key4_0.as_u64;
236 tunnel_index0 = last_tunnel_index = p0[0];
239 tunnel_index0 = last_tunnel_index;
240 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
242 /* Validate GENEVE tunnel encap-fib index agaist packet */
243 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
245 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
246 next0 = GENEVE_INPUT_NEXT_DROP;
250 /* Validate GENEVE tunnel SIP against packet DIP */
252 (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
253 goto next0; /* valid packet */
255 (ip4_address_is_multicast (&ip4_0->dst_address)))
257 key4_0.remote = ip4_0->dst_address.as_u32;
258 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
259 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
260 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
261 if (PREDICT_TRUE (p0 != NULL))
263 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
264 goto next0; /* valid packet */
267 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
268 next0 = GENEVE_INPUT_NEXT_DROP;
274 key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
275 key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
276 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
278 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
280 (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
282 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
283 if (PREDICT_FALSE (p0 == NULL))
285 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
286 next0 = GENEVE_INPUT_NEXT_DROP;
289 clib_memcpy (&last_key6, &key6_0, sizeof (key6_0));
290 tunnel_index0 = last_tunnel_index = p0[0];
293 tunnel_index0 = last_tunnel_index;
294 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
296 /* Validate GENEVE tunnel encap-fib index agaist packet */
297 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
299 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
300 next0 = GENEVE_INPUT_NEXT_DROP;
304 /* Validate GENEVE tunnel SIP against packet DIP */
305 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
307 goto next0; /* valid packet */
309 (ip6_address_is_multicast (&ip6_0->dst_address)))
311 key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
312 key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
313 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
314 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
315 if (PREDICT_TRUE (p0 != NULL))
317 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
318 goto next0; /* valid packet */
321 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
322 next0 = GENEVE_INPUT_NEXT_DROP;
327 next0 = t0->decap_next_index;
328 sw_if_index0 = t0->sw_if_index;
329 len0 = vlib_buffer_length_in_chain (vm, b0);
331 /* Required to make the l2 tag push / pop code work on l2 subifs */
332 if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
333 vnet_update_l2_len (b0);
335 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
336 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
337 sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
340 stats_n_packets += 1;
341 stats_n_bytes += len0;
343 /* Batch stats increment on the same geneve tunnel so counter
344 is not incremented per packet */
345 if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
347 stats_n_packets -= 1;
348 stats_n_bytes -= len0;
350 vlib_increment_combined_counter
351 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
352 thread_index, stats_sw_if_index,
353 stats_n_packets, stats_n_bytes);
355 stats_n_bytes = len0;
356 stats_sw_if_index = sw_if_index0;
360 b0->error = error0 ? node->errors[error0] : 0;
362 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
364 geneve_rx_trace_t *tr
365 = vlib_add_trace (vm, node, b0, sizeof (*tr));
366 tr->next_index = next0;
368 tr->tunnel_index = tunnel_index0;
369 tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
373 (vnet_get_geneve_version (geneve1) != GENEVE_VERSION))
375 error1 = GENEVE_ERROR_BAD_FLAGS;
376 next1 = GENEVE_INPUT_NEXT_DROP;
379 #if SUPPORT_OPTIONS_HEADER==1
380 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve1) == 1))
382 error1 = GENEVE_ERROR_BAD_FLAGS;
383 next1 = GENEVE_INPUT_NEXT_DROP;
389 key4_1.remote = ip4_1->src_address.as_u32;
390 key4_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
392 /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
393 if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64))
395 p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
396 if (PREDICT_FALSE (p1 == NULL))
398 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
399 next1 = GENEVE_INPUT_NEXT_DROP;
402 last_key4.as_u64 = key4_1.as_u64;
403 tunnel_index1 = last_tunnel_index = p1[0];
406 tunnel_index1 = last_tunnel_index;
407 t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
409 /* Validate GENEVE tunnel encap-fib index agaist packet */
410 if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
412 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
413 next1 = GENEVE_INPUT_NEXT_DROP;
417 /* Validate GENEVE tunnel SIP against packet DIP */
419 (ip4_1->dst_address.as_u32 == t1->local.ip4.as_u32))
420 goto next1; /* valid packet */
422 (ip4_address_is_multicast (&ip4_1->dst_address)))
424 key4_1.remote = ip4_1->dst_address.as_u32;
425 key4_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
426 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
427 p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
428 if (PREDICT_TRUE (p1 != NULL))
430 mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
431 goto next1; /* valid packet */
434 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
435 next1 = GENEVE_INPUT_NEXT_DROP;
441 key6_1.remote.as_u64[0] = ip6_1->src_address.as_u64[0];
442 key6_1.remote.as_u64[1] = ip6_1->src_address.as_u64[1];
443 key6_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
445 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
447 (memcmp (&key6_1, &last_key6, sizeof (last_key6)) != 0))
449 p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
451 if (PREDICT_FALSE (p1 == NULL))
453 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
454 next1 = GENEVE_INPUT_NEXT_DROP;
458 clib_memcpy (&last_key6, &key6_1, sizeof (key6_1));
459 tunnel_index1 = last_tunnel_index = p1[0];
462 tunnel_index1 = last_tunnel_index;
463 t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
465 /* Validate GENEVE tunnel encap-fib index agaist packet */
466 if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
468 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
469 next1 = GENEVE_INPUT_NEXT_DROP;
473 /* Validate GENEVE tunnel SIP against packet DIP */
474 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_1->dst_address,
476 goto next1; /* valid packet */
478 (ip6_address_is_multicast (&ip6_1->dst_address)))
480 key6_1.remote.as_u64[0] = ip6_1->dst_address.as_u64[0];
481 key6_1.remote.as_u64[1] = ip6_1->dst_address.as_u64[1];
482 key6_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
483 p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
484 if (PREDICT_TRUE (p1 != NULL))
486 mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
487 goto next1; /* valid packet */
490 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
491 next1 = GENEVE_INPUT_NEXT_DROP;
496 next1 = t1->decap_next_index;
497 sw_if_index1 = t1->sw_if_index;
498 len1 = vlib_buffer_length_in_chain (vm, b1);
500 /* Required to make the l2 tag push / pop code work on l2 subifs */
501 if (PREDICT_TRUE (next1 == GENEVE_INPUT_NEXT_L2_INPUT))
502 vnet_update_l2_len (b1);
504 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
505 vnet_buffer (b1)->sw_if_index[VLIB_RX] = sw_if_index1;
506 sw_if_index1 = (mt1) ? mt1->sw_if_index : sw_if_index1;
509 stats_n_packets += 1;
510 stats_n_bytes += len1;
512 /* Batch stats increment on the same geneve tunnel so counter
513 is not incremented per packet */
514 if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
516 stats_n_packets -= 1;
517 stats_n_bytes -= len1;
519 vlib_increment_combined_counter
520 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
521 thread_index, stats_sw_if_index,
522 stats_n_packets, stats_n_bytes);
524 stats_n_bytes = len1;
525 stats_sw_if_index = sw_if_index1;
529 b1->error = error1 ? node->errors[error1] : 0;
531 if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
533 geneve_rx_trace_t *tr
534 = vlib_add_trace (vm, node, b1, sizeof (*tr));
535 tr->next_index = next1;
537 tr->tunnel_index = tunnel_index1;
538 tr->vni_rsvd = vnet_get_geneve_vni (geneve1);
541 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
542 to_next, n_left_to_next,
543 bi0, bi1, next0, next1);
546 while (n_left_from > 0 && n_left_to_next > 0)
553 geneve_header_t *geneve0;
556 geneve_tunnel_t *t0, *mt0 = NULL;
557 geneve4_tunnel_key_t key4_0;
558 geneve6_tunnel_key_t key6_0;
560 u32 sw_if_index0, len0;
569 b0 = vlib_get_buffer (vm, bi0);
571 /* udp leaves current_data pointing at the geneve header */
572 geneve0 = vlib_buffer_get_current (b0);
573 vnet_geneve_hdr_1word_ntoh (geneve0);
578 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
579 ip4_0 = vlib_buffer_get_current (b0);
584 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
585 ip6_0 = vlib_buffer_get_current (b0);
588 /* pop (ip, udp, geneve) */
593 sizeof (*ip4_0) + sizeof (udp_header_t) +
594 GENEVE_BASE_HEADER_LENGTH +
595 vnet_get_geneve_options_len (geneve0));
601 sizeof (*ip6_0) + sizeof (udp_header_t) +
602 GENEVE_BASE_HEADER_LENGTH +
603 vnet_get_geneve_options_len (geneve0));
610 (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
612 error0 = GENEVE_ERROR_BAD_FLAGS;
613 next0 = GENEVE_INPUT_NEXT_DROP;
616 #if SUPPORT_OPTIONS_HEADER==1
617 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
619 error0 = GENEVE_ERROR_BAD_FLAGS;
620 next0 = GENEVE_INPUT_NEXT_DROP;
626 key4_0.remote = ip4_0->src_address.as_u32;
627 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
629 /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
630 if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
632 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
633 if (PREDICT_FALSE (p0 == NULL))
635 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
636 next0 = GENEVE_INPUT_NEXT_DROP;
639 last_key4.as_u64 = key4_0.as_u64;
640 tunnel_index0 = last_tunnel_index = p0[0];
643 tunnel_index0 = last_tunnel_index;
644 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
646 /* Validate GENEVE tunnel encap-fib index agaist packet */
647 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
649 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
650 next0 = GENEVE_INPUT_NEXT_DROP;
654 /* Validate GENEVE tunnel SIP against packet DIP */
656 (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
657 goto next00; /* valid packet */
659 (ip4_address_is_multicast (&ip4_0->dst_address)))
661 key4_0.remote = ip4_0->dst_address.as_u32;
662 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
663 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
664 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
665 if (PREDICT_TRUE (p0 != NULL))
667 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
668 goto next00; /* valid packet */
671 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
672 next0 = GENEVE_INPUT_NEXT_DROP;
678 key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
679 key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
680 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
682 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
684 (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
686 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
687 if (PREDICT_FALSE (p0 == NULL))
689 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
690 next0 = GENEVE_INPUT_NEXT_DROP;
693 clib_memcpy (&last_key6, &key6_0, sizeof (key6_0));
694 tunnel_index0 = last_tunnel_index = p0[0];
697 tunnel_index0 = last_tunnel_index;
698 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
700 /* Validate GENEVE tunnel encap-fib index agaist packet */
701 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
703 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
704 next0 = GENEVE_INPUT_NEXT_DROP;
708 /* Validate GENEVE tunnel SIP against packet DIP */
709 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
711 goto next00; /* valid packet */
713 (ip6_address_is_multicast (&ip6_0->dst_address)))
715 key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
716 key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
717 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
718 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
719 if (PREDICT_TRUE (p0 != NULL))
721 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
722 goto next00; /* valid packet */
725 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
726 next0 = GENEVE_INPUT_NEXT_DROP;
731 next0 = t0->decap_next_index;
732 sw_if_index0 = t0->sw_if_index;
733 len0 = vlib_buffer_length_in_chain (vm, b0);
735 /* Required to make the l2 tag push / pop code work on l2 subifs */
736 if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
737 vnet_update_l2_len (b0);
739 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
740 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
741 sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
744 stats_n_packets += 1;
745 stats_n_bytes += len0;
747 /* Batch stats increment on the same geneve tunnel so counter
748 is not incremented per packet */
749 if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
751 stats_n_packets -= 1;
752 stats_n_bytes -= len0;
754 vlib_increment_combined_counter
755 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
756 thread_index, stats_sw_if_index,
757 stats_n_packets, stats_n_bytes);
759 stats_n_bytes = len0;
760 stats_sw_if_index = sw_if_index0;
764 b0->error = error0 ? node->errors[error0] : 0;
766 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
768 geneve_rx_trace_t *tr
769 = vlib_add_trace (vm, node, b0, sizeof (*tr));
770 tr->next_index = next0;
772 tr->tunnel_index = tunnel_index0;
773 tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
775 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
776 to_next, n_left_to_next,
780 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
782 /* Do we still need this now that tunnel tx stats is kept? */
783 vlib_node_increment_counter (vm, is_ip4 ?
785 index : geneve6_input_node.index,
786 GENEVE_ERROR_DECAPSULATED, pkts_decapsulated);
788 /* Increment any remaining batch stats */
791 vlib_increment_combined_counter
792 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
793 thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
794 node->runtime_data[0] = stats_sw_if_index;
797 return from_frame->n_vectors;
801 geneve4_input (vlib_main_t * vm,
802 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
804 return geneve_input (vm, node, from_frame, /* is_ip4 */ 1);
808 geneve6_input (vlib_main_t * vm,
809 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
811 return geneve_input (vm, node, from_frame, /* is_ip4 */ 0);
814 static char *geneve_error_strings[] = {
815 #define geneve_error(n,s) s,
816 #include <vnet/geneve/geneve_error.def>
822 VLIB_REGISTER_NODE (geneve4_input_node) = {
823 .function = geneve4_input,
824 .name = "geneve4-input",
825 /* Takes a vector of packets. */
826 .vector_size = sizeof (u32),
827 .n_errors = GENEVE_N_ERROR,
828 .error_strings = geneve_error_strings,
829 .n_next_nodes = GENEVE_INPUT_N_NEXT,
831 #define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
832 foreach_geneve_input_next
836 //temp .format_buffer = format_geneve_header,
837 .format_trace = format_geneve_rx_trace,
838 // $$$$ .unformat_buffer = unformat_geneve_header,
841 VLIB_NODE_FUNCTION_MULTIARCH (geneve4_input_node, geneve4_input)
843 VLIB_REGISTER_NODE (geneve6_input_node) = {
844 .function = geneve6_input,
845 .name = "geneve6-input",
846 /* Takes a vector of packets. */
847 .vector_size = sizeof (u32),
848 .n_errors = GENEVE_N_ERROR,
849 .error_strings = geneve_error_strings,
850 .n_next_nodes = GENEVE_INPUT_N_NEXT,
852 #define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
853 foreach_geneve_input_next
856 //temp .format_buffer = format_geneve_header,
857 .format_trace = format_geneve_rx_trace,
858 // $$$$ .unformat_buffer = unformat_geneve_header,
861 VLIB_NODE_FUNCTION_MULTIARCH (geneve6_input_node, geneve6_input)
866 IP_GENEVE_BYPASS_NEXT_DROP,
867 IP_GENEVE_BYPASS_NEXT_GENEVE,
868 IP_GENEVE_BYPASS_N_NEXT,
869 } ip_vxan_bypass_next_t;
872 ip_geneve_bypass_inline (vlib_main_t * vm,
873 vlib_node_runtime_t * node,
874 vlib_frame_t * frame, u32 is_ip4)
876 geneve_main_t *vxm = &geneve_main;
877 u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
878 vlib_node_runtime_t *error_node =
879 vlib_node_get_runtime (vm, ip4_input_node.index);
880 ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */
881 ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */
883 from = vlib_frame_vector_args (frame);
884 n_left_from = frame->n_vectors;
885 next_index = node->cached_next_index;
887 if (node->flags & VLIB_NODE_FLAG_TRACE)
888 ip4_forward_next_trace (vm, node, frame, VLIB_TX);
893 ip6_address_set_zero (&addr6);
895 while (n_left_from > 0)
897 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
899 while (n_left_from >= 4 && n_left_to_next >= 2)
901 vlib_buffer_t *b0, *b1;
902 ip4_header_t *ip40, *ip41;
903 ip6_header_t *ip60, *ip61;
904 udp_header_t *udp0, *udp1;
905 u32 bi0, ip_len0, udp_len0, flags0, next0;
906 u32 bi1, ip_len1, udp_len1, flags1, next1;
907 i32 len_diff0, len_diff1;
908 u8 error0, good_udp0, proto0;
909 u8 error1, good_udp1, proto1;
911 /* Prefetch next iteration. */
913 vlib_buffer_t *p2, *p3;
915 p2 = vlib_get_buffer (vm, from[2]);
916 p3 = vlib_get_buffer (vm, from[3]);
918 vlib_prefetch_buffer_header (p2, LOAD);
919 vlib_prefetch_buffer_header (p3, LOAD);
921 CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
922 CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
925 bi0 = to_next[0] = from[0];
926 bi1 = to_next[1] = from[1];
932 b0 = vlib_get_buffer (vm, bi0);
933 b1 = vlib_get_buffer (vm, bi1);
936 ip40 = vlib_buffer_get_current (b0);
937 ip41 = vlib_buffer_get_current (b1);
941 ip60 = vlib_buffer_get_current (b0);
942 ip61 = vlib_buffer_get_current (b1);
945 /* Setup packet for next IP feature */
946 vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_RX], &next0,
948 vnet_feature_next (vnet_buffer (b1)->sw_if_index[VLIB_RX], &next1,
953 /* Treat IP frag packets as "experimental" protocol for now
954 until support of IP frag reassembly is implemented */
955 proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
956 proto1 = ip4_is_fragment (ip41) ? 0xfe : ip41->protocol;
960 proto0 = ip60->protocol;
961 proto1 = ip61->protocol;
964 /* Process packet 0 */
965 if (proto0 != IP_PROTOCOL_UDP)
966 goto exit0; /* not UDP packet */
969 udp0 = ip4_next_header (ip40);
971 udp0 = ip6_next_header (ip60);
973 if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
974 goto exit0; /* not GENEVE packet */
976 /* Validate DIP against VTEPs */
979 if (addr4.as_u32 != ip40->dst_address.as_u32)
981 if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
982 goto exit0; /* no local VTEP for GENEVE packet */
983 addr4 = ip40->dst_address;
988 if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
990 if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
991 goto exit0; /* no local VTEP for GENEVE packet */
992 addr6 = ip60->dst_address;
997 good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
999 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1000 good_udp0 |= udp0->checksum == 0;
1002 /* Verify UDP length */
1004 ip_len0 = clib_net_to_host_u16 (ip40->length);
1006 ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
1007 udp_len0 = clib_net_to_host_u16 (udp0->length);
1008 len_diff0 = ip_len0 - udp_len0;
1010 /* Verify UDP checksum */
1011 if (PREDICT_FALSE (!good_udp0))
1013 if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1016 flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1018 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1020 (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1026 error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1027 error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1031 error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1032 error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1036 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1037 b0->error = error0 ? error_node->errors[error0] : 0;
1039 /* geneve-input node expect current at GENEVE header */
1041 vlib_buffer_advance (b0,
1042 sizeof (ip4_header_t) +
1043 sizeof (udp_header_t));
1045 vlib_buffer_advance (b0,
1046 sizeof (ip6_header_t) +
1047 sizeof (udp_header_t));
1050 /* Process packet 1 */
1051 if (proto1 != IP_PROTOCOL_UDP)
1052 goto exit1; /* not UDP packet */
1055 udp1 = ip4_next_header (ip41);
1057 udp1 = ip6_next_header (ip61);
1059 if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
1060 goto exit1; /* not GENEVE packet */
1062 /* Validate DIP against VTEPs */
1065 if (addr4.as_u32 != ip41->dst_address.as_u32)
1067 if (!hash_get (vxm->vtep4, ip41->dst_address.as_u32))
1068 goto exit1; /* no local VTEP for GENEVE packet */
1069 addr4 = ip41->dst_address;
1074 if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
1076 if (!hash_get_mem (vxm->vtep6, &ip61->dst_address))
1077 goto exit1; /* no local VTEP for GENEVE packet */
1078 addr6 = ip61->dst_address;
1083 good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1085 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1086 good_udp1 |= udp1->checksum == 0;
1088 /* Verify UDP length */
1090 ip_len1 = clib_net_to_host_u16 (ip41->length);
1092 ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
1093 udp_len1 = clib_net_to_host_u16 (udp1->length);
1094 len_diff1 = ip_len1 - udp_len1;
1096 /* Verify UDP checksum */
1097 if (PREDICT_FALSE (!good_udp1))
1099 if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1102 flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
1104 flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
1106 (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1112 error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1113 error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
1117 error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1118 error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
1122 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1123 b1->error = error1 ? error_node->errors[error1] : 0;
1125 /* geneve-input node expect current at GENEVE header */
1127 vlib_buffer_advance (b1,
1128 sizeof (ip4_header_t) +
1129 sizeof (udp_header_t));
1131 vlib_buffer_advance (b1,
1132 sizeof (ip6_header_t) +
1133 sizeof (udp_header_t));
1136 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
1137 to_next, n_left_to_next,
1138 bi0, bi1, next0, next1);
1141 while (n_left_from > 0 && n_left_to_next > 0)
1147 u32 bi0, ip_len0, udp_len0, flags0, next0;
1149 u8 error0, good_udp0, proto0;
1151 bi0 = to_next[0] = from[0];
1155 n_left_to_next -= 1;
1157 b0 = vlib_get_buffer (vm, bi0);
1159 ip40 = vlib_buffer_get_current (b0);
1161 ip60 = vlib_buffer_get_current (b0);
1163 /* Setup packet for next IP feature */
1164 vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_RX], &next0,
1168 /* Treat IP4 frag packets as "experimental" protocol for now
1169 until support of IP frag reassembly is implemented */
1170 proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
1172 proto0 = ip60->protocol;
1174 if (proto0 != IP_PROTOCOL_UDP)
1175 goto exit; /* not UDP packet */
1178 udp0 = ip4_next_header (ip40);
1180 udp0 = ip6_next_header (ip60);
1182 if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
1183 goto exit; /* not GENEVE packet */
1185 /* Validate DIP against VTEPs */
1188 if (addr4.as_u32 != ip40->dst_address.as_u32)
1190 if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
1191 goto exit; /* no local VTEP for GENEVE packet */
1192 addr4 = ip40->dst_address;
1197 if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
1199 if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
1200 goto exit; /* no local VTEP for GENEVE packet */
1201 addr6 = ip60->dst_address;
1206 good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1208 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1209 good_udp0 |= udp0->checksum == 0;
1211 /* Verify UDP length */
1213 ip_len0 = clib_net_to_host_u16 (ip40->length);
1215 ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
1216 udp_len0 = clib_net_to_host_u16 (udp0->length);
1217 len_diff0 = ip_len0 - udp_len0;
1219 /* Verify UDP checksum */
1220 if (PREDICT_FALSE (!good_udp0))
1222 if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1225 flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1227 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1229 (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1235 error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1236 error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1240 error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1241 error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1245 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1246 b0->error = error0 ? error_node->errors[error0] : 0;
1248 /* geneve-input node expect current at GENEVE header */
1250 vlib_buffer_advance (b0,
1251 sizeof (ip4_header_t) +
1252 sizeof (udp_header_t));
1254 vlib_buffer_advance (b0,
1255 sizeof (ip6_header_t) +
1256 sizeof (udp_header_t));
1259 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1260 to_next, n_left_to_next,
1264 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1267 return frame->n_vectors;
1271 ip4_geneve_bypass (vlib_main_t * vm,
1272 vlib_node_runtime_t * node, vlib_frame_t * frame)
1274 return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
1278 VLIB_REGISTER_NODE (ip4_geneve_bypass_node) =
1280 .function = ip4_geneve_bypass,.name = "ip4-geneve-bypass",.vector_size =
1281 sizeof (u32),.n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
1283 [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
1284 [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve4-input",}
1285 ,.format_buffer = format_ip4_header,.format_trace =
1286 format_ip4_forward_next_trace,};
1288 VLIB_NODE_FUNCTION_MULTIARCH (ip4_geneve_bypass_node, ip4_geneve_bypass)
1289 /* Dummy init function to get us linked in. */
1290 clib_error_t *ip4_geneve_bypass_init (vlib_main_t * vm)
1295 VLIB_INIT_FUNCTION (ip4_geneve_bypass_init);
1299 ip6_geneve_bypass (vlib_main_t * vm,
1300 vlib_node_runtime_t * node, vlib_frame_t * frame)
1302 return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
1306 VLIB_REGISTER_NODE (ip6_geneve_bypass_node) =
1308 .function = ip6_geneve_bypass,.name = "ip6-geneve-bypass",.vector_size =
1309 sizeof (u32),.n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
1311 [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
1312 [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve6-input",}
1313 ,.format_buffer = format_ip6_header,.format_trace =
1314 format_ip6_forward_next_trace,};
1317 VLIB_NODE_FUNCTION_MULTIARCH (ip6_geneve_bypass_node, ip6_geneve_bypass)
1318 /* Dummy init function to get us linked in. */
1319 clib_error_t *ip6_geneve_bypass_init (vlib_main_t * vm)
1324 VLIB_INIT_FUNCTION (ip6_geneve_bypass_init);
1327 * fd.io coding-style-patch-verification: ON
1330 * eval: (c-set-style "gnu")