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) */
171 vlib_buffer_advance (b0,
172 sizeof (*ip4_0) + sizeof (udp_header_t) +
173 GENEVE_BASE_HEADER_LENGTH +
174 vnet_get_geneve_options_len (geneve0));
175 vlib_buffer_advance (b1,
176 sizeof (*ip4_1) + sizeof (udp_header_t) +
177 GENEVE_BASE_HEADER_LENGTH +
178 vnet_get_geneve_options_len (geneve1));
182 vlib_buffer_advance (b0,
183 sizeof (*ip6_0) + sizeof (udp_header_t) +
184 GENEVE_BASE_HEADER_LENGTH +
185 vnet_get_geneve_options_len (geneve0));
186 vlib_buffer_advance (b1,
187 sizeof (*ip6_1) + sizeof (udp_header_t) +
188 GENEVE_BASE_HEADER_LENGTH +
189 vnet_get_geneve_options_len (geneve1));
199 (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
201 error0 = GENEVE_ERROR_BAD_FLAGS;
202 next0 = GENEVE_INPUT_NEXT_DROP;
205 #if SUPPORT_OPTIONS_HEADER==1
206 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
208 error0 = GENEVE_ERROR_BAD_FLAGS;
209 next0 = GENEVE_INPUT_NEXT_DROP;
215 key4_0.remote = ip4_0->src_address.as_u32;
216 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
218 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
219 if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
221 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
222 if (PREDICT_FALSE (p0 == NULL))
224 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
225 next0 = GENEVE_INPUT_NEXT_DROP;
228 last_key4.as_u64 = key4_0.as_u64;
229 tunnel_index0 = last_tunnel_index = p0[0];
232 tunnel_index0 = last_tunnel_index;
233 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
235 /* Validate GENEVE tunnel encap-fib index against packet */
236 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
238 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
239 next0 = GENEVE_INPUT_NEXT_DROP;
243 /* Validate GENEVE tunnel SIP against packet DIP */
245 (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
246 goto next0; /* valid packet */
248 (ip4_address_is_multicast (&ip4_0->dst_address)))
250 key4_0.remote = ip4_0->dst_address.as_u32;
251 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
252 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
253 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
254 if (PREDICT_TRUE (p0 != NULL))
256 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
257 goto next0; /* valid packet */
260 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
261 next0 = GENEVE_INPUT_NEXT_DROP;
267 key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
268 key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
269 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
271 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
273 (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
275 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
276 if (PREDICT_FALSE (p0 == NULL))
278 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
279 next0 = GENEVE_INPUT_NEXT_DROP;
282 clib_memcpy_fast (&last_key6, &key6_0, sizeof (key6_0));
283 tunnel_index0 = last_tunnel_index = p0[0];
286 tunnel_index0 = last_tunnel_index;
287 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
289 /* Validate GENEVE tunnel encap-fib index against packet */
290 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
292 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
293 next0 = GENEVE_INPUT_NEXT_DROP;
297 /* Validate GENEVE tunnel SIP against packet DIP */
298 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
300 goto next0; /* valid packet */
302 (ip6_address_is_multicast (&ip6_0->dst_address)))
304 key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
305 key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
306 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
307 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
308 if (PREDICT_TRUE (p0 != NULL))
310 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
311 goto next0; /* valid packet */
314 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
315 next0 = GENEVE_INPUT_NEXT_DROP;
320 next0 = t0->decap_next_index;
321 sw_if_index0 = t0->sw_if_index;
322 len0 = vlib_buffer_length_in_chain (vm, b0);
324 /* Required to make the l2 tag push / pop code work on l2 subifs */
325 if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
326 vnet_update_l2_len (b0);
328 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
329 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
330 sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
333 stats_n_packets += 1;
334 stats_n_bytes += len0;
336 /* Batch stats increment on the same geneve tunnel so counter
337 is not incremented per packet */
338 if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
340 stats_n_packets -= 1;
341 stats_n_bytes -= len0;
343 vlib_increment_combined_counter
344 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
345 thread_index, stats_sw_if_index,
346 stats_n_packets, stats_n_bytes);
348 stats_n_bytes = len0;
349 stats_sw_if_index = sw_if_index0;
353 b0->error = error0 ? node->errors[error0] : 0;
355 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
357 geneve_rx_trace_t *tr
358 = vlib_add_trace (vm, node, b0, sizeof (*tr));
359 tr->next_index = next0;
361 tr->tunnel_index = tunnel_index0;
362 tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
366 (vnet_get_geneve_version (geneve1) != GENEVE_VERSION))
368 error1 = GENEVE_ERROR_BAD_FLAGS;
369 next1 = GENEVE_INPUT_NEXT_DROP;
372 #if SUPPORT_OPTIONS_HEADER==1
373 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve1) == 1))
375 error1 = GENEVE_ERROR_BAD_FLAGS;
376 next1 = GENEVE_INPUT_NEXT_DROP;
382 key4_1.remote = ip4_1->src_address.as_u32;
383 key4_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
385 /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
386 if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64))
388 p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
389 if (PREDICT_FALSE (p1 == NULL))
391 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
392 next1 = GENEVE_INPUT_NEXT_DROP;
395 last_key4.as_u64 = key4_1.as_u64;
396 tunnel_index1 = last_tunnel_index = p1[0];
399 tunnel_index1 = last_tunnel_index;
400 t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
402 /* Validate GENEVE tunnel encap-fib index against packet */
403 if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
405 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
406 next1 = GENEVE_INPUT_NEXT_DROP;
410 /* Validate GENEVE tunnel SIP against packet DIP */
412 (ip4_1->dst_address.as_u32 == t1->local.ip4.as_u32))
413 goto next1; /* valid packet */
415 (ip4_address_is_multicast (&ip4_1->dst_address)))
417 key4_1.remote = ip4_1->dst_address.as_u32;
418 key4_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
419 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
420 p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
421 if (PREDICT_TRUE (p1 != NULL))
423 mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
424 goto next1; /* valid packet */
427 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
428 next1 = GENEVE_INPUT_NEXT_DROP;
434 key6_1.remote.as_u64[0] = ip6_1->src_address.as_u64[0];
435 key6_1.remote.as_u64[1] = ip6_1->src_address.as_u64[1];
436 key6_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
438 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
440 (memcmp (&key6_1, &last_key6, sizeof (last_key6)) != 0))
442 p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
444 if (PREDICT_FALSE (p1 == NULL))
446 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
447 next1 = GENEVE_INPUT_NEXT_DROP;
451 clib_memcpy_fast (&last_key6, &key6_1, sizeof (key6_1));
452 tunnel_index1 = last_tunnel_index = p1[0];
455 tunnel_index1 = last_tunnel_index;
456 t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
458 /* Validate GENEVE tunnel encap-fib index against packet */
459 if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
461 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
462 next1 = GENEVE_INPUT_NEXT_DROP;
466 /* Validate GENEVE tunnel SIP against packet DIP */
467 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_1->dst_address,
469 goto next1; /* valid packet */
471 (ip6_address_is_multicast (&ip6_1->dst_address)))
473 key6_1.remote.as_u64[0] = ip6_1->dst_address.as_u64[0];
474 key6_1.remote.as_u64[1] = ip6_1->dst_address.as_u64[1];
475 key6_1.vni = vnet_get_geneve_vni_bigendian (geneve1);
476 p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
477 if (PREDICT_TRUE (p1 != NULL))
479 mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
480 goto next1; /* valid packet */
483 error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
484 next1 = GENEVE_INPUT_NEXT_DROP;
489 next1 = t1->decap_next_index;
490 sw_if_index1 = t1->sw_if_index;
491 len1 = vlib_buffer_length_in_chain (vm, b1);
493 /* Required to make the l2 tag push / pop code work on l2 subifs */
494 if (PREDICT_TRUE (next1 == GENEVE_INPUT_NEXT_L2_INPUT))
495 vnet_update_l2_len (b1);
497 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
498 vnet_buffer (b1)->sw_if_index[VLIB_RX] = sw_if_index1;
499 sw_if_index1 = (mt1) ? mt1->sw_if_index : sw_if_index1;
502 stats_n_packets += 1;
503 stats_n_bytes += len1;
505 /* Batch stats increment on the same geneve tunnel so counter
506 is not incremented per packet */
507 if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
509 stats_n_packets -= 1;
510 stats_n_bytes -= len1;
512 vlib_increment_combined_counter
513 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
514 thread_index, stats_sw_if_index,
515 stats_n_packets, stats_n_bytes);
517 stats_n_bytes = len1;
518 stats_sw_if_index = sw_if_index1;
522 b1->error = error1 ? node->errors[error1] : 0;
524 if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
526 geneve_rx_trace_t *tr
527 = vlib_add_trace (vm, node, b1, sizeof (*tr));
528 tr->next_index = next1;
530 tr->tunnel_index = tunnel_index1;
531 tr->vni_rsvd = vnet_get_geneve_vni (geneve1);
534 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
535 to_next, n_left_to_next,
536 bi0, bi1, next0, next1);
539 while (n_left_from > 0 && n_left_to_next > 0)
546 geneve_header_t *geneve0;
549 geneve_tunnel_t *t0, *mt0 = NULL;
550 geneve4_tunnel_key_t key4_0;
551 geneve6_tunnel_key_t key6_0;
553 u32 sw_if_index0, len0;
565 /* udp leaves current_data pointing at the geneve header */
566 geneve0 = vlib_buffer_get_current (b0);
567 vnet_geneve_hdr_1word_ntoh (geneve0);
572 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
573 ip4_0 = vlib_buffer_get_current (b0);
578 (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
579 ip6_0 = vlib_buffer_get_current (b0);
582 /* pop (ip, udp, geneve) */
587 sizeof (*ip4_0) + sizeof (udp_header_t) +
588 GENEVE_BASE_HEADER_LENGTH +
589 vnet_get_geneve_options_len (geneve0));
595 sizeof (*ip6_0) + sizeof (udp_header_t) +
596 GENEVE_BASE_HEADER_LENGTH +
597 vnet_get_geneve_options_len (geneve0));
604 (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
606 error0 = GENEVE_ERROR_BAD_FLAGS;
607 next0 = GENEVE_INPUT_NEXT_DROP;
610 #if SUPPORT_OPTIONS_HEADER==1
611 if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
613 error0 = GENEVE_ERROR_BAD_FLAGS;
614 next0 = GENEVE_INPUT_NEXT_DROP;
620 key4_0.remote = ip4_0->src_address.as_u32;
621 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
623 /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
624 if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
626 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
627 if (PREDICT_FALSE (p0 == NULL))
629 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
630 next0 = GENEVE_INPUT_NEXT_DROP;
633 last_key4.as_u64 = key4_0.as_u64;
634 tunnel_index0 = last_tunnel_index = p0[0];
637 tunnel_index0 = last_tunnel_index;
638 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
640 /* Validate GENEVE tunnel encap-fib index agaist packet */
641 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
643 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
644 next0 = GENEVE_INPUT_NEXT_DROP;
648 /* Validate GENEVE tunnel SIP against packet DIP */
650 (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
651 goto next00; /* valid packet */
653 (ip4_address_is_multicast (&ip4_0->dst_address)))
655 key4_0.remote = ip4_0->dst_address.as_u32;
656 key4_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
657 /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
658 p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
659 if (PREDICT_TRUE (p0 != NULL))
661 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
662 goto next00; /* valid packet */
665 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
666 next0 = GENEVE_INPUT_NEXT_DROP;
672 key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
673 key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
674 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
676 /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
678 (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
680 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
681 if (PREDICT_FALSE (p0 == NULL))
683 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
684 next0 = GENEVE_INPUT_NEXT_DROP;
687 clib_memcpy_fast (&last_key6, &key6_0, sizeof (key6_0));
688 tunnel_index0 = last_tunnel_index = p0[0];
691 tunnel_index0 = last_tunnel_index;
692 t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
694 /* Validate GENEVE tunnel encap-fib index agaist packet */
695 if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
697 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
698 next0 = GENEVE_INPUT_NEXT_DROP;
702 /* Validate GENEVE tunnel SIP against packet DIP */
703 if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
705 goto next00; /* valid packet */
707 (ip6_address_is_multicast (&ip6_0->dst_address)))
709 key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
710 key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
711 key6_0.vni = vnet_get_geneve_vni_bigendian (geneve0);
712 p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
713 if (PREDICT_TRUE (p0 != NULL))
715 mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
716 goto next00; /* valid packet */
719 error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
720 next0 = GENEVE_INPUT_NEXT_DROP;
725 next0 = t0->decap_next_index;
726 sw_if_index0 = t0->sw_if_index;
727 len0 = vlib_buffer_length_in_chain (vm, b0);
729 /* Required to make the l2 tag push / pop code work on l2 subifs */
730 if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
731 vnet_update_l2_len (b0);
733 /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
734 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
735 sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
738 stats_n_packets += 1;
739 stats_n_bytes += len0;
741 /* Batch stats increment on the same geneve tunnel so counter
742 is not incremented per packet */
743 if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
745 stats_n_packets -= 1;
746 stats_n_bytes -= len0;
748 vlib_increment_combined_counter
749 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
750 thread_index, stats_sw_if_index,
751 stats_n_packets, stats_n_bytes);
753 stats_n_bytes = len0;
754 stats_sw_if_index = sw_if_index0;
758 b0->error = error0 ? node->errors[error0] : 0;
760 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
762 geneve_rx_trace_t *tr
763 = vlib_add_trace (vm, node, b0, sizeof (*tr));
764 tr->next_index = next0;
766 tr->tunnel_index = tunnel_index0;
767 tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
769 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
770 to_next, n_left_to_next,
774 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
776 /* Do we still need this now that tunnel tx stats is kept? */
777 vlib_node_increment_counter (vm, is_ip4 ?
779 index : geneve6_input_node.index,
780 GENEVE_ERROR_DECAPSULATED, pkts_decapsulated);
782 /* Increment any remaining batch stats */
785 vlib_increment_combined_counter
786 (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
787 thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
788 node->runtime_data[0] = stats_sw_if_index;
791 return from_frame->n_vectors;
794 VLIB_NODE_FN (geneve4_input_node) (vlib_main_t * vm,
795 vlib_node_runtime_t * node,
796 vlib_frame_t * from_frame)
798 return geneve_input (vm, node, from_frame, /* is_ip4 */ 1);
801 VLIB_NODE_FN (geneve6_input_node) (vlib_main_t * vm,
802 vlib_node_runtime_t * node,
803 vlib_frame_t * from_frame)
805 return geneve_input (vm, node, from_frame, /* is_ip4 */ 0);
808 static char *geneve_error_strings[] = {
809 #define geneve_error(n,s) s,
810 #include <vnet/geneve/geneve_error.def>
816 VLIB_REGISTER_NODE (geneve4_input_node) = {
817 .name = "geneve4-input",
818 /* Takes a vector of packets. */
819 .vector_size = sizeof (u32),
820 .n_errors = GENEVE_N_ERROR,
821 .error_strings = geneve_error_strings,
822 .n_next_nodes = GENEVE_INPUT_N_NEXT,
824 #define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
825 foreach_geneve_input_next
829 //temp .format_buffer = format_geneve_header,
830 .format_trace = format_geneve_rx_trace,
831 // $$$$ .unformat_buffer = unformat_geneve_header,
834 VLIB_REGISTER_NODE (geneve6_input_node) = {
835 .name = "geneve6-input",
836 /* Takes a vector of packets. */
837 .vector_size = sizeof (u32),
838 .n_errors = GENEVE_N_ERROR,
839 .error_strings = geneve_error_strings,
840 .n_next_nodes = GENEVE_INPUT_N_NEXT,
842 #define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
843 foreach_geneve_input_next
846 //temp .format_buffer = format_geneve_header,
847 .format_trace = format_geneve_rx_trace,
848 // $$$$ .unformat_buffer = unformat_geneve_header,
854 IP_GENEVE_BYPASS_NEXT_DROP,
855 IP_GENEVE_BYPASS_NEXT_GENEVE,
856 IP_GENEVE_BYPASS_N_NEXT,
857 } ip_vxan_bypass_next_t;
860 ip_geneve_bypass_inline (vlib_main_t * vm,
861 vlib_node_runtime_t * node,
862 vlib_frame_t * frame, u32 is_ip4)
864 geneve_main_t *vxm = &geneve_main;
865 u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
866 vlib_node_runtime_t *error_node =
867 vlib_node_get_runtime (vm, ip4_input_node.index);
868 vtep4_key_t last_vtep4; /* last IPv4 address / fib index
869 matching a local VTEP address */
870 vtep6_key_t last_vtep6; /* last IPv6 address / fib index
871 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);
881 vtep4_key_init (&last_vtep4);
883 vtep6_key_init (&last_vtep6);
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 (!vtep4_check (&vxm->vtep_table, b0, ip40, &last_vtep4))
968 goto exit0; /* no local VTEP for GENEVE packet */
972 if (!vtep6_check (&vxm->vtep_table, b0, ip60, &last_vtep6))
973 goto exit0; /* no local VTEP for GENEVE packet */
977 good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
979 /* Don't verify UDP checksum for packets with explicit zero checksum. */
980 good_udp0 |= udp0->checksum == 0;
982 /* Verify UDP length */
984 ip_len0 = clib_net_to_host_u16 (ip40->length);
986 ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
987 udp_len0 = clib_net_to_host_u16 (udp0->length);
988 len_diff0 = ip_len0 - udp_len0;
990 /* Verify UDP checksum */
991 if (PREDICT_FALSE (!good_udp0))
993 if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
996 flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
998 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1000 (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1006 error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1007 error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1011 error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1012 error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1016 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1017 b0->error = error0 ? error_node->errors[error0] : 0;
1019 /* geneve-input node expect current at GENEVE header */
1021 vlib_buffer_advance (b0,
1022 sizeof (ip4_header_t) +
1023 sizeof (udp_header_t));
1025 vlib_buffer_advance (b0,
1026 sizeof (ip6_header_t) +
1027 sizeof (udp_header_t));
1030 /* Process packet 1 */
1031 if (proto1 != IP_PROTOCOL_UDP)
1032 goto exit1; /* not UDP packet */
1035 udp1 = ip4_next_header (ip41);
1037 udp1 = ip6_next_header (ip61);
1039 if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
1040 goto exit1; /* not GENEVE packet */
1042 /* Validate DIP against VTEPs */
1045 if (!vtep4_check (&vxm->vtep_table, b1, ip41, &last_vtep4))
1046 goto exit1; /* no local VTEP for GENEVE packet */
1050 if (!vtep6_check (&vxm->vtep_table, b1, ip61, &last_vtep6))
1051 goto exit1; /* no local VTEP for GENEVE packet */
1055 good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1057 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1058 good_udp1 |= udp1->checksum == 0;
1060 /* Verify UDP length */
1062 ip_len1 = clib_net_to_host_u16 (ip41->length);
1064 ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
1065 udp_len1 = clib_net_to_host_u16 (udp1->length);
1066 len_diff1 = ip_len1 - udp_len1;
1068 /* Verify UDP checksum */
1069 if (PREDICT_FALSE (!good_udp1))
1071 if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1074 flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
1076 flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
1078 (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1084 error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1085 error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
1089 error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1090 error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
1094 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1095 b1->error = error1 ? error_node->errors[error1] : 0;
1097 /* geneve-input node expect current at GENEVE header */
1099 vlib_buffer_advance (b1,
1100 sizeof (ip4_header_t) +
1101 sizeof (udp_header_t));
1103 vlib_buffer_advance (b1,
1104 sizeof (ip6_header_t) +
1105 sizeof (udp_header_t));
1108 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
1109 to_next, n_left_to_next,
1110 bi0, bi1, next0, next1);
1113 while (n_left_from > 0 && n_left_to_next > 0)
1119 u32 bi0, ip_len0, udp_len0, flags0, next0;
1121 u8 error0, good_udp0, proto0;
1123 bi0 = to_next[0] = from[0];
1127 n_left_to_next -= 1;
1129 b0 = vlib_get_buffer (vm, bi0);
1131 ip40 = vlib_buffer_get_current (b0);
1133 ip60 = vlib_buffer_get_current (b0);
1135 /* Setup packet for next IP feature */
1136 vnet_feature_next (&next0, b0);
1139 /* Treat IP4 frag packets as "experimental" protocol for now
1140 until support of IP frag reassembly is implemented */
1141 proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
1143 proto0 = ip60->protocol;
1145 if (proto0 != IP_PROTOCOL_UDP)
1146 goto exit; /* not UDP packet */
1149 udp0 = ip4_next_header (ip40);
1151 udp0 = ip6_next_header (ip60);
1153 if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
1154 goto exit; /* not GENEVE packet */
1156 /* Validate DIP against VTEPs */
1159 if (!vtep4_check (&vxm->vtep_table, b0, ip40, &last_vtep4))
1160 goto exit; /* no local VTEP for GENEVE packet */
1164 if (!vtep6_check (&vxm->vtep_table, b0, ip60, &last_vtep6))
1165 goto exit; /* no local VTEP for GENEVE packet */
1169 good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1171 /* Don't verify UDP checksum for packets with explicit zero checksum. */
1172 good_udp0 |= udp0->checksum == 0;
1174 /* Verify UDP length */
1176 ip_len0 = clib_net_to_host_u16 (ip40->length);
1178 ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
1179 udp_len0 = clib_net_to_host_u16 (udp0->length);
1180 len_diff0 = ip_len0 - udp_len0;
1182 /* Verify UDP checksum */
1183 if (PREDICT_FALSE (!good_udp0))
1185 if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1188 flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1190 flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1192 (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1198 error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1199 error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1203 error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1204 error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1208 IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
1209 b0->error = error0 ? error_node->errors[error0] : 0;
1211 /* geneve-input node expect current at GENEVE header */
1213 vlib_buffer_advance (b0,
1214 sizeof (ip4_header_t) +
1215 sizeof (udp_header_t));
1217 vlib_buffer_advance (b0,
1218 sizeof (ip6_header_t) +
1219 sizeof (udp_header_t));
1222 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1223 to_next, n_left_to_next,
1227 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1230 return frame->n_vectors;
1233 VLIB_NODE_FN (ip4_geneve_bypass_node) (vlib_main_t * vm,
1234 vlib_node_runtime_t * node,
1235 vlib_frame_t * frame)
1237 return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
1241 VLIB_REGISTER_NODE (ip4_geneve_bypass_node) =
1243 .name = "ip4-geneve-bypass",.vector_size =
1244 sizeof (u32),.n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
1246 [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
1247 [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve4-input",}
1248 ,.format_buffer = format_ip4_header,.format_trace =
1249 format_ip4_forward_next_trace,};
1251 #ifndef CLIB_MARCH_VARIANT
1252 /* Dummy init function to get us linked in. */
1253 clib_error_t *ip4_geneve_bypass_init (vlib_main_t * vm)
1258 VLIB_INIT_FUNCTION (ip4_geneve_bypass_init);
1260 #endif /* CLIB_MARCH_VARIANT */
1262 VLIB_NODE_FN (ip6_geneve_bypass_node) (vlib_main_t * vm,
1263 vlib_node_runtime_t * node,
1264 vlib_frame_t * frame)
1266 return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
1270 VLIB_REGISTER_NODE (ip6_geneve_bypass_node) =
1272 .name = "ip6-geneve-bypass",.vector_size =
1273 sizeof (u32),.n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
1275 [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
1276 [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve6-input",}
1277 ,.format_buffer = format_ip6_header,.format_trace =
1278 format_ip6_forward_next_trace,};
1281 #ifndef CLIB_MARCH_VARIANT
1282 /* Dummy init function to get us linked in. */
1284 ip6_geneve_bypass_init (vlib_main_t * vm)
1289 VLIB_INIT_FUNCTION (ip6_geneve_bypass_init);
1290 #endif /* CLIB_MARCH_VARIANT */
1293 * fd.io coding-style-patch-verification: ON
1296 * eval: (c-set-style "gnu")