2 * esp_encrypt.c : IPSec ESP encrypt node
4 * Copyright (c) 2015 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/api_errno.h>
20 #include <vnet/ip/ip.h>
22 #include <vnet/crypto/crypto.h>
24 #include <vnet/ipsec/ipsec.h>
25 #include <vnet/ipsec/ipsec_tun.h>
26 #include <vnet/ipsec/ipsec.api_enum.h>
27 #include <vnet/ipsec/esp.h>
28 #include <vnet/tunnel/tunnel_dp.h>
30 #define foreach_esp_encrypt_next \
31 _ (DROP4, "ip4-drop") \
32 _ (DROP6, "ip6-drop") \
33 _ (DROP_MPLS, "mpls-drop") \
34 _ (HANDOFF4, "handoff4") \
35 _ (HANDOFF6, "handoff6") \
36 _ (HANDOFF_MPLS, "handoff-mpls") \
37 _ (INTERFACE_OUTPUT, "interface-output")
39 #define _(v, s) ESP_ENCRYPT_NEXT_##v,
42 foreach_esp_encrypt_next
54 ipsec_crypto_alg_t crypto_alg;
55 ipsec_integ_alg_t integ_alg;
56 } esp_encrypt_trace_t;
61 } esp_encrypt_post_trace_t;
63 typedef vl_counter_esp_encrypt_enum_t esp_encrypt_error_t;
65 /* packet trace format function */
67 format_esp_encrypt_trace (u8 * s, va_list * args)
69 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
70 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
71 esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
75 "esp: sa-index %d spi %u (0x%08x) seq %u sa-seq-hi %u crypto %U integrity %U%s",
76 t->sa_index, t->spi, t->spi, t->seq, t->sa_seq_hi,
77 format_ipsec_crypto_alg,
78 t->crypto_alg, format_ipsec_integ_alg, t->integ_alg,
79 t->udp_encap ? " udp-encap-enabled" : "");
84 format_esp_post_encrypt_trace (u8 * s, va_list * args)
86 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
87 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
88 esp_encrypt_post_trace_t *t = va_arg (*args, esp_encrypt_post_trace_t *);
90 s = format (s, "esp-post: next node index %u", t->next_index);
94 /* pad packet in input buffer */
95 static_always_inline u8 *
96 esp_add_footer_and_icv (vlib_main_t *vm, vlib_buffer_t **last, u8 esp_align,
97 u8 icv_sz, vlib_node_runtime_t *node,
98 u16 buffer_data_size, uword total_len)
100 static const u8 pad_data[ESP_MAX_BLOCK_SIZE] = {
101 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
102 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00,
105 u16 min_length = total_len + sizeof (esp_footer_t);
106 u16 new_length = round_pow2 (min_length, esp_align);
107 u8 pad_bytes = new_length - min_length;
108 esp_footer_t *f = (esp_footer_t *) (vlib_buffer_get_current (last[0]) +
109 last[0]->current_length + pad_bytes);
110 u16 tail_sz = sizeof (esp_footer_t) + pad_bytes + icv_sz;
112 if (last[0]->current_data + last[0]->current_length + tail_sz >
116 if (vlib_buffer_alloc (vm, &tmp_bi, 1) != 1)
119 vlib_buffer_t *tmp = vlib_get_buffer (vm, tmp_bi);
120 last[0]->next_buffer = tmp_bi;
121 last[0]->flags |= VLIB_BUFFER_NEXT_PRESENT;
122 f = (esp_footer_t *) (vlib_buffer_get_current (tmp) + pad_bytes);
123 tmp->current_length += tail_sz;
127 last[0]->current_length += tail_sz;
129 f->pad_length = pad_bytes;
132 ASSERT (pad_bytes <= ESP_MAX_BLOCK_SIZE);
133 pad_bytes = clib_min (ESP_MAX_BLOCK_SIZE, pad_bytes);
134 clib_memcpy_fast ((u8 *) f - pad_bytes, pad_data, pad_bytes);
137 return &f->next_header;
140 static_always_inline void
141 esp_update_ip4_hdr (ip4_header_t * ip4, u16 len, int is_transport, int is_udp)
146 len = clib_net_to_host_u16 (len);
147 old_len = ip4->length;
151 u8 prot = is_udp ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
153 sum = ip_csum_update (ip4->checksum, ip4->protocol,
154 prot, ip4_header_t, protocol);
155 ip4->protocol = prot;
157 sum = ip_csum_update (sum, old_len, len, ip4_header_t, length);
160 sum = ip_csum_update (ip4->checksum, old_len, len, ip4_header_t, length);
163 ip4->checksum = ip_csum_fold (sum);
166 static_always_inline void
167 esp_fill_udp_hdr (ipsec_sa_t * sa, udp_header_t * udp, u16 len)
169 clib_memcpy_fast (udp, &sa->udp_hdr, sizeof (udp_header_t));
170 udp->length = clib_net_to_host_u16 (len);
173 static_always_inline u8
174 ext_hdr_is_pre_esp (u8 nexthdr)
176 #ifdef CLIB_HAVE_VEC128
177 static const u8x16 ext_hdr_types = {
178 IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS,
179 IP_PROTOCOL_IPV6_ROUTE,
180 IP_PROTOCOL_IPV6_FRAGMENTATION,
183 return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr));
185 return (!(nexthdr ^ IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) ||
186 !(nexthdr ^ IP_PROTOCOL_IPV6_ROUTE) ||
187 !(nexthdr ^ IP_PROTOCOL_IPV6_FRAGMENTATION));
191 static_always_inline u8
192 esp_get_ip6_hdr_len (ip6_header_t * ip6, ip6_ext_header_t ** ext_hdr)
194 /* this code assumes that HbH, route and frag headers will be before
195 others, if that is not the case, they will end up encrypted */
196 u8 len = sizeof (ip6_header_t);
199 /* if next packet doesn't have ext header */
200 if (ext_hdr_is_pre_esp (ip6->protocol) == 0)
206 p = ip6_next_header (ip6);
207 len += ip6_ext_header_len (p);
208 while (ext_hdr_is_pre_esp (p->next_hdr))
210 len += ip6_ext_header_len (p);
211 p = ip6_ext_next_header (p);
218 /* IPsec IV generation: IVs requirements differ depending of the
219 * encryption mode: IVs must be unpredictable for AES-CBC whereas it can
220 * be predictable but should never be reused with the same key material
222 * To avoid reusing the same IVs between multiple VPP instances and between
223 * restarts, we use a properly chosen PRNG to generate IVs. To ensure the IV is
224 * unpredictable for CBC, it is then encrypted using the same key as the
225 * message. You can refer to NIST SP800-38a and NIST SP800-38d for more
227 static_always_inline void *
228 esp_generate_iv (ipsec_sa_t *sa, void *payload, int iv_sz)
230 ASSERT (iv_sz >= sizeof (u64));
231 u64 *iv = (u64 *) (payload - iv_sz);
232 clib_memset_u8 (iv, 0, iv_sz);
233 *iv = clib_pcg64i_random_r (&sa->iv_prng);
237 static_always_inline void
238 esp_process_chained_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
239 vnet_crypto_op_t * ops, vlib_buffer_t * b[],
240 u16 * nexts, vnet_crypto_op_chunk_t * chunks,
243 u32 n_fail, n_ops = vec_len (ops);
244 vnet_crypto_op_t *op = ops;
249 n_fail = n_ops - vnet_crypto_process_chained_ops (vm, op, chunks, n_ops);
253 ASSERT (op - ops < n_ops);
255 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
257 u32 bi = op->user_data;
258 esp_encrypt_set_next_index (b[bi], node, vm->thread_index,
259 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
260 bi, nexts, drop_next,
261 vnet_buffer (b[bi])->ipsec.sad_index);
268 static_always_inline void
269 esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
270 vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts,
273 u32 n_fail, n_ops = vec_len (ops);
274 vnet_crypto_op_t *op = ops;
279 n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
283 ASSERT (op - ops < n_ops);
285 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
287 u32 bi = op->user_data;
288 esp_encrypt_set_next_index (b[bi], node, vm->thread_index,
289 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
290 bi, nexts, drop_next,
291 vnet_buffer (b[bi])->ipsec.sad_index);
298 static_always_inline u32
299 esp_encrypt_chain_crypto (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
300 ipsec_sa_t * sa0, vlib_buffer_t * b,
301 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
302 u32 start_len, u16 * n_ch)
304 vnet_crypto_op_chunk_t *ch;
305 vlib_buffer_t *cb = b;
308 vec_add2 (ptd->chunks, ch, 1);
309 total_len = ch->len = start_len;
310 ch->src = ch->dst = start;
311 cb = vlib_get_buffer (vm, cb->next_buffer);
315 vec_add2 (ptd->chunks, ch, 1);
318 total_len += ch->len = cb->current_length - icv_sz;
320 total_len += ch->len = cb->current_length;
321 ch->src = ch->dst = vlib_buffer_get_current (cb);
323 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
326 cb = vlib_get_buffer (vm, cb->next_buffer);
335 static_always_inline u32
336 esp_encrypt_chain_integ (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
337 ipsec_sa_t * sa0, vlib_buffer_t * b,
338 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
339 u32 start_len, u8 * digest, u16 * n_ch)
341 vnet_crypto_op_chunk_t *ch;
342 vlib_buffer_t *cb = b;
345 vec_add2 (ptd->chunks, ch, 1);
346 total_len = ch->len = start_len;
348 cb = vlib_get_buffer (vm, cb->next_buffer);
352 vec_add2 (ptd->chunks, ch, 1);
356 total_len += ch->len = cb->current_length - icv_sz;
357 if (ipsec_sa_is_set_USE_ESN (sa0))
359 u32 seq_hi = clib_net_to_host_u32 (sa0->seq_hi);
360 clib_memcpy_fast (digest, &seq_hi, sizeof (seq_hi));
361 ch->len += sizeof (seq_hi);
362 total_len += sizeof (seq_hi);
366 total_len += ch->len = cb->current_length;
367 ch->src = vlib_buffer_get_current (cb);
369 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
372 cb = vlib_get_buffer (vm, cb->next_buffer);
382 esp_prepare_sync_op (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
383 vnet_crypto_op_t **crypto_ops,
384 vnet_crypto_op_t **integ_ops, ipsec_sa_t *sa0, u32 seq_hi,
385 u8 *payload, u16 payload_len, u8 iv_sz, u8 icv_sz, u32 bi,
386 vlib_buffer_t **b, vlib_buffer_t *lb, u32 hdr_len,
389 if (sa0->crypto_enc_op_id)
391 vnet_crypto_op_t *op;
392 vec_add2_aligned (crypto_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
393 vnet_crypto_op_init (op, sa0->crypto_enc_op_id);
394 u8 *crypto_start = payload;
395 /* esp_add_footer_and_icv() in esp_encrypt_inline() makes sure we always
396 * have enough space for ESP header and footer which includes ICV */
397 ASSERT (payload_len > icv_sz);
398 u16 crypto_len = payload_len - icv_sz;
400 /* generate the IV in front of the payload */
401 void *pkt_iv = esp_generate_iv (sa0, payload, iv_sz);
403 op->key_index = sa0->crypto_key_index;
406 if (ipsec_sa_is_set_IS_CTR (sa0))
408 /* construct nonce in a scratch space in front of the IP header */
409 esp_ctr_nonce_t *nonce =
410 (esp_ctr_nonce_t *) (pkt_iv - hdr_len - sizeof (*nonce));
411 if (ipsec_sa_is_set_IS_AEAD (sa0))
413 /* constuct aad in a scratch space in front of the nonce */
414 op->aad = (u8 *) nonce - sizeof (esp_aead_t);
415 op->aad_len = esp_aad_fill (op->aad, esp, sa0, seq_hi);
416 op->tag = payload + crypto_len;
418 if (PREDICT_FALSE (ipsec_sa_is_set_IS_NULL_GMAC (sa0)))
420 /* RFC-4543 ENCR_NULL_AUTH_AES_GMAC: IV is part of AAD */
421 crypto_start -= iv_sz;
427 nonce->ctr = clib_host_to_net_u32 (1);
430 nonce->salt = sa0->salt;
431 nonce->iv = *(u64 *) pkt_iv;
432 op->iv = (u8 *) nonce;
436 /* construct zero iv in front of the IP header */
437 op->iv = pkt_iv - hdr_len - iv_sz;
438 clib_memset_u8 (op->iv, 0, iv_sz);
439 /* include iv field in crypto */
440 crypto_start -= iv_sz;
444 if (PREDICT_FALSE (lb != b[0]))
447 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
448 op->chunk_index = vec_len (ptd->chunks);
449 op->tag = vlib_buffer_get_tail (lb) - icv_sz;
450 esp_encrypt_chain_crypto (vm, ptd, sa0, b[0], lb, icv_sz,
451 crypto_start, crypto_len + icv_sz,
457 op->src = op->dst = crypto_start;
458 op->len = crypto_len;
462 if (sa0->integ_op_id)
464 vnet_crypto_op_t *op;
465 vec_add2_aligned (integ_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
466 vnet_crypto_op_init (op, sa0->integ_op_id);
467 op->src = payload - iv_sz - sizeof (esp_header_t);
468 op->digest = payload + payload_len - icv_sz;
469 op->key_index = sa0->integ_key_index;
470 op->digest_len = icv_sz;
471 op->len = payload_len - icv_sz + iv_sz + sizeof (esp_header_t);
477 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
478 op->chunk_index = vec_len (ptd->chunks);
479 op->digest = vlib_buffer_get_tail (lb) - icv_sz;
481 esp_encrypt_chain_integ (vm, ptd, sa0, b[0], lb, icv_sz,
482 payload - iv_sz - sizeof (esp_header_t),
483 payload_len + iv_sz +
484 sizeof (esp_header_t), op->digest,
487 else if (ipsec_sa_is_set_USE_ESN (sa0))
489 u32 tmp = clib_net_to_host_u32 (seq_hi);
490 clib_memcpy_fast (op->digest, &tmp, sizeof (seq_hi));
491 op->len += sizeof (seq_hi);
496 static_always_inline void
497 esp_prepare_async_frame (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
498 vnet_crypto_async_frame_t *async_frame,
499 ipsec_sa_t *sa, vlib_buffer_t *b, esp_header_t *esp,
500 u8 *payload, u32 payload_len, u8 iv_sz, u8 icv_sz,
501 u32 bi, u16 next, u32 hdr_len, u16 async_next,
504 esp_post_data_t *post = esp_post_data (b);
505 u8 *tag, *iv, *aad = 0;
507 const u32 key_index = sa->crypto_key_index;
508 i16 crypto_start_offset, integ_start_offset;
509 u16 crypto_total_len, integ_total_len;
511 post->next_index = next;
514 crypto_start_offset = integ_start_offset = payload - b->data;
515 crypto_total_len = integ_total_len = payload_len - icv_sz;
516 tag = payload + crypto_total_len;
518 /* generate the IV in front of the payload */
519 void *pkt_iv = esp_generate_iv (sa, payload, iv_sz);
521 if (ipsec_sa_is_set_IS_CTR (sa))
523 /* construct nonce in a scratch space in front of the IP header */
524 esp_ctr_nonce_t *nonce =
525 (esp_ctr_nonce_t *) (pkt_iv - hdr_len - sizeof (*nonce));
526 if (ipsec_sa_is_set_IS_AEAD (sa))
528 /* constuct aad in a scratch space in front of the nonce */
529 aad = (u8 *) nonce - sizeof (esp_aead_t);
530 esp_aad_fill (aad, esp, sa, sa->seq_hi);
531 if (PREDICT_FALSE (ipsec_sa_is_set_IS_NULL_GMAC (sa)))
533 /* RFC-4543 ENCR_NULL_AUTH_AES_GMAC: IV is part of AAD */
534 crypto_start_offset -= iv_sz;
535 crypto_total_len += iv_sz;
540 nonce->ctr = clib_host_to_net_u32 (1);
543 nonce->salt = sa->salt;
544 nonce->iv = *(u64 *) pkt_iv;
549 /* construct zero iv in front of the IP header */
550 iv = pkt_iv - hdr_len - iv_sz;
551 clib_memset_u8 (iv, 0, iv_sz);
552 /* include iv field in crypto */
553 crypto_start_offset -= iv_sz;
554 crypto_total_len += iv_sz;
560 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
561 tag = vlib_buffer_get_tail (lb) - icv_sz;
562 crypto_total_len = esp_encrypt_chain_crypto (
563 vm, ptd, sa, b, lb, icv_sz, b->data + crypto_start_offset,
564 crypto_total_len + icv_sz, 0);
569 integ_start_offset -= iv_sz + sizeof (esp_header_t);
570 integ_total_len += iv_sz + sizeof (esp_header_t);
574 integ_total_len = esp_encrypt_chain_integ (
575 vm, ptd, sa, b, lb, icv_sz,
576 payload - iv_sz - sizeof (esp_header_t),
577 payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
579 else if (ipsec_sa_is_set_USE_ESN (sa))
581 u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
582 clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
583 integ_total_len += sizeof (seq_hi);
587 /* this always succeeds because we know the frame is not full */
588 vnet_crypto_async_add_to_frame (vm, async_frame, key_index, crypto_total_len,
589 integ_total_len - crypto_total_len,
590 crypto_start_offset, integ_start_offset, bi,
591 async_next, iv, tag, aad, flag);
595 esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
596 vlib_frame_t *frame, vnet_link_t lt, int is_tun,
599 ipsec_main_t *im = &ipsec_main;
600 ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
601 u32 *from = vlib_frame_vector_args (frame);
602 u32 n_left = frame->n_vectors;
603 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
604 u32 thread_index = vm->thread_index;
605 u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
606 u32 current_sa_index = ~0, current_sa_packets = 0;
607 u32 current_sa_bytes = 0, spi = 0;
608 u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
611 vnet_crypto_op_t **crypto_ops = &ptd->crypto_ops;
612 vnet_crypto_op_t **integ_ops = &ptd->integ_ops;
613 vnet_crypto_async_frame_t *async_frames[VNET_CRYPTO_ASYNC_OP_N_IDS];
614 int is_async = im->async_mode;
615 vnet_crypto_async_op_id_t async_op = ~0;
617 (lt == VNET_LINK_IP6 ? ESP_ENCRYPT_NEXT_DROP6 :
618 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_DROP4 :
619 ESP_ENCRYPT_NEXT_DROP_MPLS));
620 u16 handoff_next = (lt == VNET_LINK_IP6 ?
621 ESP_ENCRYPT_NEXT_HANDOFF6 :
622 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_HANDOFF4 :
623 ESP_ENCRYPT_NEXT_HANDOFF_MPLS));
624 vlib_buffer_t *sync_bufs[VLIB_FRAME_SIZE];
625 u16 sync_nexts[VLIB_FRAME_SIZE], *sync_next = sync_nexts, n_sync = 0;
627 u16 noop_nexts[VLIB_FRAME_SIZE], n_noop = 0;
628 u32 sync_bi[VLIB_FRAME_SIZE];
629 u32 noop_bi[VLIB_FRAME_SIZE];
630 esp_encrypt_error_t err;
632 vlib_get_buffers (vm, from, b, n_left);
634 vec_reset_length (ptd->crypto_ops);
635 vec_reset_length (ptd->integ_ops);
636 vec_reset_length (ptd->chained_crypto_ops);
637 vec_reset_length (ptd->chained_integ_ops);
638 vec_reset_length (ptd->async_frames);
639 vec_reset_length (ptd->chunks);
640 clib_memset (async_frames, 0, sizeof (async_frames));
647 u8 *payload, *next_hdr_ptr;
648 u16 payload_len, payload_len_total, n_bufs;
651 err = ESP_ENCRYPT_ERROR_RX_PKTS;
656 vlib_prefetch_buffer_header (b[2], LOAD);
657 p = vlib_buffer_get_current (b[1]);
658 clib_prefetch_load (p);
659 p -= CLIB_CACHE_LINE_BYTES;
660 clib_prefetch_load (p);
661 /* speculate that the trailer goes in the first buffer */
662 CLIB_PREFETCH (vlib_buffer_get_tail (b[1]),
663 CLIB_CACHE_LINE_BYTES, LOAD);
668 /* we are on a ipsec tunnel's feature arc */
669 vnet_buffer (b[0])->ipsec.sad_index =
670 sa_index0 = ipsec_tun_protect_get_sa_out
671 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
673 if (PREDICT_FALSE (INDEX_INVALID == sa_index0))
675 err = ESP_ENCRYPT_ERROR_NO_PROTECTION;
676 noop_nexts[n_noop] = drop_next;
677 b[0]->error = node->errors[err];
682 sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
684 if (sa_index0 != current_sa_index)
686 if (current_sa_packets)
687 vlib_increment_combined_counter (
688 &ipsec_sa_counters, thread_index, current_sa_index,
689 current_sa_packets, current_sa_bytes);
690 current_sa_packets = current_sa_bytes = 0;
692 sa0 = ipsec_sa_get (sa_index0);
694 if (PREDICT_FALSE ((sa0->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
695 sa0->integ_alg == IPSEC_INTEG_ALG_NONE) &&
696 !ipsec_sa_is_set_NO_ALGO_NO_DROP (sa0)))
698 err = ESP_ENCRYPT_ERROR_NO_ENCRYPTION;
699 esp_encrypt_set_next_index (b[0], node, thread_index, err,
700 n_noop, noop_nexts, drop_next,
704 current_sa_index = sa_index0;
705 vlib_prefetch_combined_counter (&ipsec_sa_counters, thread_index,
708 /* fetch the second cacheline ASAP */
709 clib_prefetch_load (sa0->cacheline1);
711 spi = clib_net_to_host_u32 (sa0->spi);
712 esp_align = sa0->esp_block_align;
713 icv_sz = sa0->integ_icv_size;
714 iv_sz = sa0->crypto_iv_size;
715 is_async = im->async_mode | ipsec_sa_is_set_IS_ASYNC (sa0);
718 if (PREDICT_FALSE ((u16) ~0 == sa0->thread_index))
720 /* this is the first packet to use this SA, claim the SA
721 * for this thread. this could happen simultaneously on
723 clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
724 ipsec_sa_assign_thread (thread_index));
727 if (PREDICT_FALSE (thread_index != sa0->thread_index))
729 vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
730 err = ESP_ENCRYPT_ERROR_HANDOFF;
731 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
732 noop_nexts, handoff_next,
738 n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
741 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
742 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
743 noop_nexts, drop_next, current_sa_index);
749 /* find last buffer in the chain */
750 while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
751 lb = vlib_get_buffer (vm, lb->next_buffer);
754 if (PREDICT_FALSE (esp_seq_advance (sa0)))
756 err = ESP_ENCRYPT_ERROR_SEQ_CYCLED;
757 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
758 noop_nexts, drop_next, current_sa_index);
765 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
767 payload = vlib_buffer_get_current (b[0]);
768 next_hdr_ptr = esp_add_footer_and_icv (
769 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
770 vlib_buffer_length_in_chain (vm, b[0]));
773 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
774 esp_encrypt_set_next_index (b[0], node, thread_index, err,
775 n_noop, noop_nexts, drop_next,
779 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
780 payload_len = b[0]->current_length;
781 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
784 hdr_len += sizeof (*esp);
785 esp = (esp_header_t *) (payload - hdr_len);
787 /* optional UDP header */
788 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
790 hdr_len += sizeof (udp_header_t);
791 esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
792 payload_len_total + hdr_len);
796 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
799 u16 len = sizeof (ip6_header_t);
801 ip6 = (ip6_header_t *) (payload - hdr_len);
802 clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
804 if (VNET_LINK_IP6 == lt)
806 *next_hdr_ptr = IP_PROTOCOL_IPV6;
807 tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
808 (const ip6_header_t *) payload,
811 else if (VNET_LINK_IP4 == lt)
813 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
814 tunnel_encap_fixup_4o6 (sa0->tunnel_flags, b[0],
815 (const ip4_header_t *) payload, ip6);
817 else if (VNET_LINK_MPLS == lt)
819 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
820 tunnel_encap_fixup_mplso6 (
821 sa0->tunnel_flags, b[0],
822 (const mpls_unicast_header_t *) payload, ip6);
827 len = payload_len_total + hdr_len - len;
828 ip6->payload_length = clib_net_to_host_u16 (len);
829 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
834 u16 len = sizeof (ip4_header_t);
836 ip4 = (ip4_header_t *) (payload - hdr_len);
837 clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
839 if (VNET_LINK_IP6 == lt)
841 *next_hdr_ptr = IP_PROTOCOL_IPV6;
842 tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
843 (const ip6_header_t *)
846 else if (VNET_LINK_IP4 == lt)
848 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
849 tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
850 (const ip4_header_t *)
853 else if (VNET_LINK_MPLS == lt)
855 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
856 tunnel_encap_fixup_mplso4_w_chksum (
857 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
863 len = payload_len_total + hdr_len;
864 esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
870 sync_next[0] = dpo->dpoi_next_node;
871 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
874 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
875 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
877 else /* transport mode */
879 u8 *l2_hdr, l2_len, *ip_hdr;
881 ip6_ext_header_t *ext_hdr;
882 udp_header_t *udp = 0;
884 u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
887 * Get extension header chain length. It might be longer than the
888 * buffer's pre_data area.
891 (VNET_LINK_IP6 == lt ?
892 esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
893 ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
894 if ((old_ip_hdr - ip_len) < &b[0]->pre_data[0])
896 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
897 esp_encrypt_set_next_index (b[0], node, thread_index, err,
898 n_noop, noop_nexts, drop_next,
903 vlib_buffer_advance (b[0], ip_len);
904 payload = vlib_buffer_get_current (b[0]);
905 next_hdr_ptr = esp_add_footer_and_icv (
906 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
907 vlib_buffer_length_in_chain (vm, b[0]));
910 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
911 esp_encrypt_set_next_index (b[0], node, thread_index, err,
912 n_noop, noop_nexts, drop_next,
917 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
918 payload_len = b[0]->current_length;
919 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
922 hdr_len += sizeof (*esp);
923 esp = (esp_header_t *) (payload - hdr_len);
925 /* optional UDP header */
926 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
928 hdr_len += sizeof (udp_header_t);
929 udp = (udp_header_t *) (payload - hdr_len);
934 ip_hdr = payload - hdr_len;
939 l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
941 l2_hdr = payload - hdr_len;
943 /* copy l2 and ip header */
944 clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
950 len = payload_len_total + hdr_len - l2_len;
952 if (VNET_LINK_IP6 == lt)
954 ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
955 if (PREDICT_TRUE (NULL == ext_hdr))
957 *next_hdr_ptr = ip6->protocol;
959 (udp) ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
963 *next_hdr_ptr = ext_hdr->next_hdr;
965 (udp) ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
967 ip6->payload_length =
968 clib_host_to_net_u16 (len - sizeof (ip6_header_t));
970 else if (VNET_LINK_IP4 == lt)
972 ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
973 *next_hdr_ptr = ip4->protocol;
974 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1,
978 clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
982 udp_len = len - ip_len;
983 esp_fill_udp_hdr (sa0, udp, udp_len);
986 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
991 crypto_ops = &ptd->chained_crypto_ops;
992 integ_ops = &ptd->chained_integ_ops;
996 crypto_ops = &ptd->crypto_ops;
997 integ_ops = &ptd->integ_ops;
1001 esp->seq = clib_net_to_host_u32 (sa0->seq);
1005 async_op = sa0->crypto_async_enc_op_id;
1007 /* get a frame for this op if we don't yet have one or it's full
1009 if (NULL == async_frames[async_op] ||
1010 vnet_crypto_async_frame_is_full (async_frames[async_op]))
1012 async_frames[async_op] =
1013 vnet_crypto_async_get_frame (vm, async_op);
1015 if (PREDICT_FALSE (!async_frames[async_op]))
1017 err = ESP_ENCRYPT_ERROR_NO_AVAIL_FRAME;
1018 esp_encrypt_set_next_index (b[0], node, thread_index, err,
1019 n_noop, noop_nexts, drop_next,
1024 /* Save the frame to the list we'll submit at the end */
1025 vec_add1 (ptd->async_frames, async_frames[async_op]);
1028 esp_prepare_async_frame (vm, ptd, async_frames[async_op], sa0, b[0],
1029 esp, payload, payload_len, iv_sz, icv_sz,
1030 from[b - bufs], sync_next[0], hdr_len,
1031 async_next_node, lb);
1034 esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, sa0->seq_hi,
1035 payload, payload_len, iv_sz, icv_sz, n_sync, b,
1038 vlib_buffer_advance (b[0], 0LL - hdr_len);
1040 current_sa_packets += 1;
1041 current_sa_bytes += payload_len_total;
1044 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1046 esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
1048 if (INDEX_INVALID == sa_index0)
1049 clib_memset_u8 (tr, 0xff, sizeof (*tr));
1052 tr->sa_index = sa_index0;
1055 tr->sa_seq_hi = sa0->seq_hi;
1056 tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
1057 tr->crypto_alg = sa0->crypto_alg;
1058 tr->integ_alg = sa0->integ_alg;
1063 if (ESP_ENCRYPT_ERROR_RX_PKTS != err)
1065 noop_bi[n_noop] = from[b - bufs];
1070 sync_bi[n_sync] = from[b - bufs];
1071 sync_bufs[n_sync] = b[0];
1083 if (INDEX_INVALID != current_sa_index)
1084 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
1085 current_sa_index, current_sa_packets,
1089 esp_process_ops (vm, node, ptd->crypto_ops, sync_bufs, sync_nexts,
1091 esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, sync_bufs,
1092 sync_nexts, ptd->chunks, drop_next);
1094 esp_process_ops (vm, node, ptd->integ_ops, sync_bufs, sync_nexts,
1096 esp_process_chained_ops (vm, node, ptd->chained_integ_ops, sync_bufs,
1097 sync_nexts, ptd->chunks, drop_next);
1099 vlib_buffer_enqueue_to_next (vm, node, sync_bi, sync_nexts, n_sync);
1103 /* submit all of the open frames */
1104 vnet_crypto_async_frame_t **async_frame;
1106 vec_foreach (async_frame, ptd->async_frames)
1108 if (vnet_crypto_async_submit_open_frame (vm, *async_frame) < 0)
1110 n_noop += esp_async_recycle_failed_submit (
1111 vm, *async_frame, node, ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
1112 IPSEC_SA_ERROR_CRYPTO_ENGINE_ERROR, n_noop, noop_bi,
1113 noop_nexts, drop_next, true);
1114 vnet_crypto_async_reset_frame (*async_frame);
1115 vnet_crypto_async_free_frame (vm, *async_frame);
1120 vlib_buffer_enqueue_to_next (vm, node, noop_bi, noop_nexts, n_noop);
1122 vlib_node_increment_counter (vm, node->node_index, ESP_ENCRYPT_ERROR_RX_PKTS,
1125 return frame->n_vectors;
1129 esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1130 vlib_frame_t * frame)
1132 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1133 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
1134 u32 *from = vlib_frame_vector_args (frame);
1135 u32 n_left = frame->n_vectors;
1137 vlib_get_buffers (vm, from, b, n_left);
1141 vlib_prefetch_buffer_header (b[0], LOAD);
1142 vlib_prefetch_buffer_header (b[1], LOAD);
1143 vlib_prefetch_buffer_header (b[2], LOAD);
1144 vlib_prefetch_buffer_header (b[3], LOAD);
1149 vlib_prefetch_buffer_header (b[4], LOAD);
1150 vlib_prefetch_buffer_header (b[5], LOAD);
1151 vlib_prefetch_buffer_header (b[6], LOAD);
1152 vlib_prefetch_buffer_header (b[7], LOAD);
1154 next[0] = (esp_post_data (b[0]))->next_index;
1155 next[1] = (esp_post_data (b[1]))->next_index;
1156 next[2] = (esp_post_data (b[2]))->next_index;
1157 next[3] = (esp_post_data (b[3]))->next_index;
1159 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1161 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
1163 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1165 tr->next_index = next[0];
1167 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
1169 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
1171 tr->next_index = next[1];
1173 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
1175 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
1177 tr->next_index = next[2];
1179 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
1181 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
1183 tr->next_index = next[3];
1194 next[0] = (esp_post_data (b[0]))->next_index;
1195 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1197 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1199 tr->next_index = next[0];
1207 vlib_node_increment_counter (vm, node->node_index,
1208 ESP_ENCRYPT_ERROR_POST_RX_PKTS,
1210 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1211 return frame->n_vectors;
1214 VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
1215 vlib_node_runtime_t * node,
1216 vlib_frame_t * from_frame)
1218 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
1219 esp_encrypt_async_next.esp4_post_next);
1223 VLIB_REGISTER_NODE (esp4_encrypt_node) = {
1224 .name = "esp4-encrypt",
1225 .vector_size = sizeof (u32),
1226 .format_trace = format_esp_encrypt_trace,
1227 .type = VLIB_NODE_TYPE_INTERNAL,
1229 .n_errors = ESP_ENCRYPT_N_ERROR,
1230 .error_counters = esp_encrypt_error_counters,
1232 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1233 .next_nodes = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1234 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1235 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1236 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
1237 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
1238 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
1239 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output" },
1243 VLIB_NODE_FN (esp4_encrypt_post_node) (vlib_main_t * vm,
1244 vlib_node_runtime_t * node,
1245 vlib_frame_t * from_frame)
1247 return esp_encrypt_post_inline (vm, node, from_frame);
1251 VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
1252 .name = "esp4-encrypt-post",
1253 .vector_size = sizeof (u32),
1254 .format_trace = format_esp_post_encrypt_trace,
1255 .type = VLIB_NODE_TYPE_INTERNAL,
1256 .sibling_of = "esp4-encrypt",
1258 .n_errors = ESP_ENCRYPT_N_ERROR,
1259 .error_counters = esp_encrypt_error_counters,
1263 VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
1264 vlib_node_runtime_t * node,
1265 vlib_frame_t * from_frame)
1267 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
1268 esp_encrypt_async_next.esp6_post_next);
1272 VLIB_REGISTER_NODE (esp6_encrypt_node) = {
1273 .name = "esp6-encrypt",
1274 .vector_size = sizeof (u32),
1275 .format_trace = format_esp_encrypt_trace,
1276 .type = VLIB_NODE_TYPE_INTERNAL,
1277 .sibling_of = "esp4-encrypt",
1279 .n_errors = ESP_ENCRYPT_N_ERROR,
1280 .error_counters = esp_encrypt_error_counters,
1284 VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
1285 vlib_node_runtime_t * node,
1286 vlib_frame_t * from_frame)
1288 return esp_encrypt_post_inline (vm, node, from_frame);
1292 VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
1293 .name = "esp6-encrypt-post",
1294 .vector_size = sizeof (u32),
1295 .format_trace = format_esp_post_encrypt_trace,
1296 .type = VLIB_NODE_TYPE_INTERNAL,
1297 .sibling_of = "esp4-encrypt",
1299 .n_errors = ESP_ENCRYPT_N_ERROR,
1300 .error_counters = esp_encrypt_error_counters,
1304 VLIB_NODE_FN (esp4_encrypt_tun_node) (vlib_main_t * vm,
1305 vlib_node_runtime_t * node,
1306 vlib_frame_t * from_frame)
1308 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 1,
1309 esp_encrypt_async_next.esp4_tun_post_next);
1313 VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
1314 .name = "esp4-encrypt-tun",
1315 .vector_size = sizeof (u32),
1316 .format_trace = format_esp_encrypt_trace,
1317 .type = VLIB_NODE_TYPE_INTERNAL,
1319 .n_errors = ESP_ENCRYPT_N_ERROR,
1320 .error_counters = esp_encrypt_error_counters,
1322 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1324 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1325 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1326 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1327 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1328 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1329 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1330 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1334 VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
1335 vlib_node_runtime_t * node,
1336 vlib_frame_t * from_frame)
1338 return esp_encrypt_post_inline (vm, node, from_frame);
1342 VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
1343 .name = "esp4-encrypt-tun-post",
1344 .vector_size = sizeof (u32),
1345 .format_trace = format_esp_post_encrypt_trace,
1346 .type = VLIB_NODE_TYPE_INTERNAL,
1347 .sibling_of = "esp4-encrypt-tun",
1349 .n_errors = ESP_ENCRYPT_N_ERROR,
1350 .error_counters = esp_encrypt_error_counters,
1354 VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
1355 vlib_node_runtime_t * node,
1356 vlib_frame_t * from_frame)
1358 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
1359 esp_encrypt_async_next.esp6_tun_post_next);
1363 VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
1364 .name = "esp6-encrypt-tun",
1365 .vector_size = sizeof (u32),
1366 .format_trace = format_esp_encrypt_trace,
1367 .type = VLIB_NODE_TYPE_INTERNAL,
1369 .n_errors = ESP_ENCRYPT_N_ERROR,
1370 .error_counters = esp_encrypt_error_counters,
1372 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1374 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1375 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1376 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1377 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1378 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1379 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1380 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1386 VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
1387 vlib_node_runtime_t * node,
1388 vlib_frame_t * from_frame)
1390 return esp_encrypt_post_inline (vm, node, from_frame);
1394 VLIB_REGISTER_NODE (esp6_encrypt_tun_post_node) = {
1395 .name = "esp6-encrypt-tun-post",
1396 .vector_size = sizeof (u32),
1397 .format_trace = format_esp_post_encrypt_trace,
1398 .type = VLIB_NODE_TYPE_INTERNAL,
1399 .sibling_of = "esp-mpls-encrypt-tun",
1401 .n_errors = ESP_ENCRYPT_N_ERROR,
1402 .error_counters = esp_encrypt_error_counters,
1406 VLIB_NODE_FN (esp_mpls_encrypt_tun_node)
1407 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1409 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_MPLS, 1,
1410 esp_encrypt_async_next.esp_mpls_tun_post_next);
1413 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
1414 .name = "esp-mpls-encrypt-tun",
1415 .vector_size = sizeof (u32),
1416 .format_trace = format_esp_encrypt_trace,
1417 .type = VLIB_NODE_TYPE_INTERNAL,
1419 .n_errors = ESP_ENCRYPT_N_ERROR,
1420 .error_counters = esp_encrypt_error_counters,
1422 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1424 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1425 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1426 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1427 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1428 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1429 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1430 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1434 VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
1435 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1437 return esp_encrypt_post_inline (vm, node, from_frame);
1440 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
1441 .name = "esp-mpls-encrypt-tun-post",
1442 .vector_size = sizeof (u32),
1443 .format_trace = format_esp_post_encrypt_trace,
1444 .type = VLIB_NODE_TYPE_INTERNAL,
1445 .sibling_of = "esp-mpls-encrypt-tun",
1447 .n_errors = ESP_ENCRYPT_N_ERROR,
1448 .error_counters = esp_encrypt_error_counters,
1451 #ifndef CLIB_MARCH_VARIANT
1453 static clib_error_t *
1454 esp_encrypt_init (vlib_main_t *vm)
1456 ipsec_main_t *im = &ipsec_main;
1458 im->esp4_enc_fq_index =
1459 vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
1460 im->esp6_enc_fq_index =
1461 vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
1462 im->esp4_enc_tun_fq_index =
1463 vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
1464 im->esp6_enc_tun_fq_index =
1465 vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
1466 im->esp_mpls_enc_tun_fq_index =
1467 vlib_frame_queue_main_init (esp_mpls_encrypt_tun_node.index, 0);
1472 VLIB_INIT_FUNCTION (esp_encrypt_init);
1477 * fd.io coding-style-patch-verification: ON
1480 * eval: (c-set-style "gnu")