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, u16 buffer_data_size, uword total_len)
99 static const u8 pad_data[ESP_MAX_BLOCK_SIZE] = {
100 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
101 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00,
104 u16 min_length = total_len + sizeof (esp_footer_t);
105 u16 new_length = round_pow2 (min_length, esp_align);
106 u8 pad_bytes = new_length - min_length;
107 esp_footer_t *f = (esp_footer_t *) (vlib_buffer_get_current (last[0]) +
108 last[0]->current_length + pad_bytes);
109 u16 tail_sz = sizeof (esp_footer_t) + pad_bytes + icv_sz;
111 if (last[0]->current_data + last[0]->current_length + tail_sz >
115 if (vlib_buffer_alloc (vm, &tmp_bi, 1) != 1)
118 vlib_buffer_t *tmp = vlib_get_buffer (vm, tmp_bi);
119 last[0]->next_buffer = tmp_bi;
120 last[0]->flags |= VLIB_BUFFER_NEXT_PRESENT;
121 f = (esp_footer_t *) (vlib_buffer_get_current (tmp) + pad_bytes);
122 tmp->current_length += tail_sz;
126 last[0]->current_length += tail_sz;
128 f->pad_length = pad_bytes;
131 ASSERT (pad_bytes <= ESP_MAX_BLOCK_SIZE);
132 pad_bytes = clib_min (ESP_MAX_BLOCK_SIZE, pad_bytes);
133 clib_memcpy_fast ((u8 *) f - pad_bytes, pad_data, pad_bytes);
136 return &f->next_header;
139 static_always_inline void
140 esp_update_ip4_hdr (ip4_header_t * ip4, u16 len, int is_transport, int is_udp)
145 len = clib_net_to_host_u16 (len);
146 old_len = ip4->length;
150 u8 prot = is_udp ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
152 sum = ip_csum_update (ip4->checksum, ip4->protocol,
153 prot, ip4_header_t, protocol);
154 ip4->protocol = prot;
156 sum = ip_csum_update (sum, old_len, len, ip4_header_t, length);
159 sum = ip_csum_update (ip4->checksum, old_len, len, ip4_header_t, length);
162 ip4->checksum = ip_csum_fold (sum);
165 static_always_inline void
166 esp_fill_udp_hdr (ipsec_sa_t * sa, udp_header_t * udp, u16 len)
168 clib_memcpy_fast (udp, &sa->udp_hdr, sizeof (udp_header_t));
169 udp->length = clib_net_to_host_u16 (len);
172 static_always_inline u8
173 ext_hdr_is_pre_esp (u8 nexthdr)
175 #ifdef CLIB_HAVE_VEC128
176 static const u8x16 ext_hdr_types = {
177 IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS,
178 IP_PROTOCOL_IPV6_ROUTE,
179 IP_PROTOCOL_IPV6_FRAGMENTATION,
182 return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr));
184 return (!(nexthdr ^ IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) ||
185 !(nexthdr ^ IP_PROTOCOL_IPV6_ROUTE) ||
186 !(nexthdr ^ IP_PROTOCOL_IPV6_FRAGMENTATION));
190 static_always_inline u8
191 esp_get_ip6_hdr_len (ip6_header_t * ip6, ip6_ext_header_t ** ext_hdr)
193 /* this code assumes that HbH, route and frag headers will be before
194 others, if that is not the case, they will end up encrypted */
195 u8 len = sizeof (ip6_header_t);
198 /* if next packet doesn't have ext header */
199 if (ext_hdr_is_pre_esp (ip6->protocol) == 0)
205 p = ip6_next_header (ip6);
206 len += ip6_ext_header_len (p);
207 while (ext_hdr_is_pre_esp (p->next_hdr))
209 len += ip6_ext_header_len (p);
210 p = ip6_ext_next_header (p);
217 /* IPsec IV generation: IVs requirements differ depending of the
218 * encryption mode: IVs must be unpredictable for AES-CBC whereas it can
219 * be predictable but should never be reused with the same key material
221 * To avoid reusing the same IVs between multiple VPP instances and between
222 * restarts, we use a properly chosen PRNG to generate IVs. To ensure the IV is
223 * unpredictable for CBC, it is then encrypted using the same key as the
224 * message. You can refer to NIST SP800-38a and NIST SP800-38d for more
226 static_always_inline void *
227 esp_generate_iv (ipsec_sa_t *sa, void *payload, int iv_sz)
229 ASSERT (iv_sz >= sizeof (u64));
230 u64 *iv = (u64 *) (payload - iv_sz);
231 clib_memset_u8 (iv, 0, iv_sz);
232 *iv = clib_pcg64i_random_r (&sa->iv_prng);
236 static_always_inline void
237 esp_process_chained_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
238 vnet_crypto_op_t * ops, vlib_buffer_t * b[],
239 u16 * nexts, vnet_crypto_op_chunk_t * chunks,
242 u32 n_fail, n_ops = vec_len (ops);
243 vnet_crypto_op_t *op = ops;
248 n_fail = n_ops - vnet_crypto_process_chained_ops (vm, op, chunks, n_ops);
252 ASSERT (op - ops < n_ops);
254 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
256 u32 bi = op->user_data;
257 esp_encrypt_set_next_index (b[bi], node, vm->thread_index,
258 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
259 bi, nexts, drop_next,
260 vnet_buffer (b[bi])->ipsec.sad_index);
267 static_always_inline void
268 esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
269 vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts,
272 u32 n_fail, n_ops = vec_len (ops);
273 vnet_crypto_op_t *op = ops;
278 n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
282 ASSERT (op - ops < n_ops);
284 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
286 u32 bi = op->user_data;
287 esp_encrypt_set_next_index (b[bi], node, vm->thread_index,
288 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
289 bi, nexts, drop_next,
290 vnet_buffer (b[bi])->ipsec.sad_index);
297 static_always_inline u32
298 esp_encrypt_chain_crypto (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
299 ipsec_sa_t * sa0, vlib_buffer_t * b,
300 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
301 u32 start_len, u16 * n_ch)
303 vnet_crypto_op_chunk_t *ch;
304 vlib_buffer_t *cb = b;
307 vec_add2 (ptd->chunks, ch, 1);
308 total_len = ch->len = start_len;
309 ch->src = ch->dst = start;
310 cb = vlib_get_buffer (vm, cb->next_buffer);
314 vec_add2 (ptd->chunks, ch, 1);
317 total_len += ch->len = cb->current_length - icv_sz;
319 total_len += ch->len = cb->current_length;
320 ch->src = ch->dst = vlib_buffer_get_current (cb);
322 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
325 cb = vlib_get_buffer (vm, cb->next_buffer);
334 static_always_inline u32
335 esp_encrypt_chain_integ (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
336 ipsec_sa_t * sa0, vlib_buffer_t * b,
337 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
338 u32 start_len, u8 * digest, u16 * n_ch)
340 vnet_crypto_op_chunk_t *ch;
341 vlib_buffer_t *cb = b;
344 vec_add2 (ptd->chunks, ch, 1);
345 total_len = ch->len = start_len;
347 cb = vlib_get_buffer (vm, cb->next_buffer);
351 vec_add2 (ptd->chunks, ch, 1);
355 total_len += ch->len = cb->current_length - icv_sz;
356 if (ipsec_sa_is_set_USE_ESN (sa0))
358 u32 seq_hi = clib_net_to_host_u32 (sa0->seq_hi);
359 clib_memcpy_fast (digest, &seq_hi, sizeof (seq_hi));
360 ch->len += sizeof (seq_hi);
361 total_len += sizeof (seq_hi);
365 total_len += ch->len = cb->current_length;
366 ch->src = vlib_buffer_get_current (cb);
368 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
371 cb = vlib_get_buffer (vm, cb->next_buffer);
381 esp_prepare_sync_op (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
382 vnet_crypto_op_t **crypto_ops,
383 vnet_crypto_op_t **integ_ops, ipsec_sa_t *sa0, u32 seq_hi,
384 u8 *payload, u16 payload_len, u8 iv_sz, u8 icv_sz, u32 bi,
385 vlib_buffer_t **b, vlib_buffer_t *lb, u32 hdr_len,
388 if (sa0->crypto_enc_op_id)
390 vnet_crypto_op_t *op;
391 vec_add2_aligned (crypto_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
392 vnet_crypto_op_init (op, sa0->crypto_enc_op_id);
393 u8 *crypto_start = payload;
394 /* esp_add_footer_and_icv() in esp_encrypt_inline() makes sure we always
395 * have enough space for ESP header and footer which includes ICV */
396 ASSERT (payload_len > icv_sz);
397 u16 crypto_len = payload_len - icv_sz;
399 /* generate the IV in front of the payload */
400 void *pkt_iv = esp_generate_iv (sa0, payload, iv_sz);
402 op->key_index = sa0->crypto_key_index;
405 if (ipsec_sa_is_set_IS_CTR (sa0))
407 /* construct nonce in a scratch space in front of the IP header */
408 esp_ctr_nonce_t *nonce =
409 (esp_ctr_nonce_t *) (pkt_iv - hdr_len - sizeof (*nonce));
410 if (ipsec_sa_is_set_IS_AEAD (sa0))
412 /* constuct aad in a scratch space in front of the nonce */
413 op->aad = (u8 *) nonce - sizeof (esp_aead_t);
414 op->aad_len = esp_aad_fill (op->aad, esp, sa0, seq_hi);
415 op->tag = payload + crypto_len;
417 if (PREDICT_FALSE (ipsec_sa_is_set_IS_NULL_GMAC (sa0)))
419 /* RFC-4543 ENCR_NULL_AUTH_AES_GMAC: IV is part of AAD */
420 crypto_start -= iv_sz;
426 nonce->ctr = clib_host_to_net_u32 (1);
429 nonce->salt = sa0->salt;
430 nonce->iv = *(u64 *) pkt_iv;
431 op->iv = (u8 *) nonce;
435 /* construct zero iv in front of the IP header */
436 op->iv = pkt_iv - hdr_len - iv_sz;
437 clib_memset_u8 (op->iv, 0, iv_sz);
438 /* include iv field in crypto */
439 crypto_start -= iv_sz;
443 if (PREDICT_FALSE (lb != b[0]))
446 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
447 op->chunk_index = vec_len (ptd->chunks);
448 op->tag = vlib_buffer_get_tail (lb) - icv_sz;
449 esp_encrypt_chain_crypto (vm, ptd, sa0, b[0], lb, icv_sz,
450 crypto_start, crypto_len + icv_sz,
456 op->src = op->dst = crypto_start;
457 op->len = crypto_len;
461 if (sa0->integ_op_id)
463 vnet_crypto_op_t *op;
464 vec_add2_aligned (integ_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
465 vnet_crypto_op_init (op, sa0->integ_op_id);
466 op->src = payload - iv_sz - sizeof (esp_header_t);
467 op->digest = payload + payload_len - icv_sz;
468 op->key_index = sa0->integ_key_index;
469 op->digest_len = icv_sz;
470 op->len = payload_len - icv_sz + iv_sz + sizeof (esp_header_t);
476 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
477 op->chunk_index = vec_len (ptd->chunks);
478 op->digest = vlib_buffer_get_tail (lb) - icv_sz;
480 esp_encrypt_chain_integ (vm, ptd, sa0, b[0], lb, icv_sz,
481 payload - iv_sz - sizeof (esp_header_t),
482 payload_len + iv_sz +
483 sizeof (esp_header_t), op->digest,
486 else if (ipsec_sa_is_set_USE_ESN (sa0))
488 u32 tmp = clib_net_to_host_u32 (seq_hi);
489 clib_memcpy_fast (op->digest, &tmp, sizeof (seq_hi));
490 op->len += sizeof (seq_hi);
495 static_always_inline void
496 esp_prepare_async_frame (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
497 vnet_crypto_async_frame_t *async_frame,
498 ipsec_sa_t *sa, vlib_buffer_t *b, esp_header_t *esp,
499 u8 *payload, u32 payload_len, u8 iv_sz, u8 icv_sz,
500 u32 bi, u16 next, u32 hdr_len, u16 async_next,
503 esp_post_data_t *post = esp_post_data (b);
504 u8 *tag, *iv, *aad = 0;
506 const u32 key_index = sa->crypto_key_index;
507 i16 crypto_start_offset, integ_start_offset;
508 u16 crypto_total_len, integ_total_len;
510 post->next_index = next;
513 crypto_start_offset = integ_start_offset = payload - b->data;
514 crypto_total_len = integ_total_len = payload_len - icv_sz;
515 tag = payload + crypto_total_len;
517 /* generate the IV in front of the payload */
518 void *pkt_iv = esp_generate_iv (sa, payload, iv_sz);
520 if (ipsec_sa_is_set_IS_CTR (sa))
522 /* construct nonce in a scratch space in front of the IP header */
523 esp_ctr_nonce_t *nonce =
524 (esp_ctr_nonce_t *) (pkt_iv - hdr_len - sizeof (*nonce));
525 if (ipsec_sa_is_set_IS_AEAD (sa))
527 /* constuct aad in a scratch space in front of the nonce */
528 aad = (u8 *) nonce - sizeof (esp_aead_t);
529 esp_aad_fill (aad, esp, sa, sa->seq_hi);
530 if (PREDICT_FALSE (ipsec_sa_is_set_IS_NULL_GMAC (sa)))
532 /* RFC-4543 ENCR_NULL_AUTH_AES_GMAC: IV is part of AAD */
533 crypto_start_offset -= iv_sz;
534 crypto_total_len += iv_sz;
539 nonce->ctr = clib_host_to_net_u32 (1);
542 nonce->salt = sa->salt;
543 nonce->iv = *(u64 *) pkt_iv;
548 /* construct zero iv in front of the IP header */
549 iv = pkt_iv - hdr_len - iv_sz;
550 clib_memset_u8 (iv, 0, iv_sz);
551 /* include iv field in crypto */
552 crypto_start_offset -= iv_sz;
553 crypto_total_len += iv_sz;
559 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
560 tag = vlib_buffer_get_tail (lb) - icv_sz;
561 crypto_total_len = esp_encrypt_chain_crypto (
562 vm, ptd, sa, b, lb, icv_sz, b->data + crypto_start_offset,
563 crypto_total_len + icv_sz, 0);
568 integ_start_offset -= iv_sz + sizeof (esp_header_t);
569 integ_total_len += iv_sz + sizeof (esp_header_t);
573 integ_total_len = esp_encrypt_chain_integ (
574 vm, ptd, sa, b, lb, icv_sz,
575 payload - iv_sz - sizeof (esp_header_t),
576 payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
578 else if (ipsec_sa_is_set_USE_ESN (sa))
580 u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
581 clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
582 integ_total_len += sizeof (seq_hi);
586 /* this always succeeds because we know the frame is not full */
587 vnet_crypto_async_add_to_frame (vm, async_frame, key_index, crypto_total_len,
588 integ_total_len - crypto_total_len,
589 crypto_start_offset, integ_start_offset, bi,
590 async_next, iv, tag, aad, flag);
594 esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
595 vlib_frame_t *frame, vnet_link_t lt, int is_tun,
598 ipsec_main_t *im = &ipsec_main;
599 ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
600 u32 *from = vlib_frame_vector_args (frame);
601 u32 n_left = frame->n_vectors;
602 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
603 u32 thread_index = vm->thread_index;
604 u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
605 u32 current_sa_index = ~0, current_sa_packets = 0;
606 u32 current_sa_bytes = 0, spi = 0;
607 u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
609 u8 sa_drop_no_crypto = 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);
693 current_sa_index = sa_index0;
695 sa_drop_no_crypto = ((sa0->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
696 sa0->integ_alg == IPSEC_INTEG_ALG_NONE) &&
697 !ipsec_sa_is_set_NO_ALGO_NO_DROP (sa0));
699 vlib_prefetch_combined_counter (&ipsec_sa_counters, thread_index,
702 /* fetch the second cacheline ASAP */
703 clib_prefetch_load (sa0->cacheline1);
705 spi = clib_net_to_host_u32 (sa0->spi);
706 esp_align = sa0->esp_block_align;
707 icv_sz = sa0->integ_icv_size;
708 iv_sz = sa0->crypto_iv_size;
709 is_async = im->async_mode | ipsec_sa_is_set_IS_ASYNC (sa0);
712 if (PREDICT_FALSE (sa_drop_no_crypto != 0))
714 err = ESP_ENCRYPT_ERROR_NO_ENCRYPTION;
715 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
716 noop_nexts, drop_next, sa_index0);
720 if (PREDICT_FALSE ((u16) ~0 == sa0->thread_index))
722 /* this is the first packet to use this SA, claim the SA
723 * for this thread. this could happen simultaneously on
725 clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
726 ipsec_sa_assign_thread (thread_index));
729 if (PREDICT_FALSE (thread_index != sa0->thread_index))
731 vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
732 err = ESP_ENCRYPT_ERROR_HANDOFF;
733 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
734 noop_nexts, handoff_next,
740 n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
743 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
744 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
745 noop_nexts, drop_next, current_sa_index);
751 /* find last buffer in the chain */
752 while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
753 lb = vlib_get_buffer (vm, lb->next_buffer);
756 if (PREDICT_FALSE (esp_seq_advance (sa0)))
758 err = ESP_ENCRYPT_ERROR_SEQ_CYCLED;
759 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
760 noop_nexts, drop_next, current_sa_index);
767 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
769 payload = vlib_buffer_get_current (b[0]);
770 next_hdr_ptr = esp_add_footer_and_icv (
771 vm, &lb, esp_align, icv_sz, buffer_data_size,
772 vlib_buffer_length_in_chain (vm, b[0]));
775 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
776 esp_encrypt_set_next_index (b[0], node, thread_index, err,
777 n_noop, noop_nexts, drop_next,
781 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
782 payload_len = b[0]->current_length;
783 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
786 hdr_len += sizeof (*esp);
787 esp = (esp_header_t *) (payload - hdr_len);
789 /* optional UDP header */
790 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
792 hdr_len += sizeof (udp_header_t);
793 esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
794 payload_len_total + hdr_len);
798 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
801 u16 len = sizeof (ip6_header_t);
803 ip6 = (ip6_header_t *) (payload - hdr_len);
804 clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
806 if (VNET_LINK_IP6 == lt)
808 *next_hdr_ptr = IP_PROTOCOL_IPV6;
809 tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
810 (const ip6_header_t *) payload,
813 else if (VNET_LINK_IP4 == lt)
815 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
816 tunnel_encap_fixup_4o6 (sa0->tunnel_flags, b[0],
817 (const ip4_header_t *) payload, ip6);
819 else if (VNET_LINK_MPLS == lt)
821 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
822 tunnel_encap_fixup_mplso6 (
823 sa0->tunnel_flags, b[0],
824 (const mpls_unicast_header_t *) payload, ip6);
829 len = payload_len_total + hdr_len - len;
830 ip6->payload_length = clib_net_to_host_u16 (len);
831 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
836 u16 len = sizeof (ip4_header_t);
838 ip4 = (ip4_header_t *) (payload - hdr_len);
839 clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
841 if (VNET_LINK_IP6 == lt)
843 *next_hdr_ptr = IP_PROTOCOL_IPV6;
844 tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
845 (const ip6_header_t *)
848 else if (VNET_LINK_IP4 == lt)
850 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
851 tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
852 (const ip4_header_t *)
855 else if (VNET_LINK_MPLS == lt)
857 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
858 tunnel_encap_fixup_mplso4_w_chksum (
859 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
865 len = payload_len_total + hdr_len;
866 esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
872 sync_next[0] = dpo->dpoi_next_node;
873 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
876 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
877 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
879 else /* transport mode */
881 u8 *l2_hdr, l2_len, *ip_hdr;
883 ip6_ext_header_t *ext_hdr;
884 udp_header_t *udp = 0;
886 u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
889 * Get extension header chain length. It might be longer than the
890 * buffer's pre_data area.
893 (VNET_LINK_IP6 == lt ?
894 esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
895 ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
896 if ((old_ip_hdr - ip_len) < &b[0]->pre_data[0])
898 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
899 esp_encrypt_set_next_index (b[0], node, thread_index, err,
900 n_noop, noop_nexts, drop_next,
905 vlib_buffer_advance (b[0], ip_len);
906 payload = vlib_buffer_get_current (b[0]);
907 next_hdr_ptr = esp_add_footer_and_icv (
908 vm, &lb, esp_align, icv_sz, buffer_data_size,
909 vlib_buffer_length_in_chain (vm, b[0]));
912 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
913 esp_encrypt_set_next_index (b[0], node, thread_index, err,
914 n_noop, noop_nexts, drop_next,
919 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
920 payload_len = b[0]->current_length;
921 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
924 hdr_len += sizeof (*esp);
925 esp = (esp_header_t *) (payload - hdr_len);
927 /* optional UDP header */
928 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
930 hdr_len += sizeof (udp_header_t);
931 udp = (udp_header_t *) (payload - hdr_len);
936 ip_hdr = payload - hdr_len;
941 l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
943 l2_hdr = payload - hdr_len;
945 /* copy l2 and ip header */
946 clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
952 len = payload_len_total + hdr_len - l2_len;
954 if (VNET_LINK_IP6 == lt)
956 ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
957 if (PREDICT_TRUE (NULL == ext_hdr))
959 *next_hdr_ptr = ip6->protocol;
961 (udp) ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
965 *next_hdr_ptr = ext_hdr->next_hdr;
967 (udp) ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
969 ip6->payload_length =
970 clib_host_to_net_u16 (len - sizeof (ip6_header_t));
972 else if (VNET_LINK_IP4 == lt)
974 ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
975 *next_hdr_ptr = ip4->protocol;
976 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1,
980 clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
984 udp_len = len - ip_len;
985 esp_fill_udp_hdr (sa0, udp, udp_len);
988 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
993 crypto_ops = &ptd->chained_crypto_ops;
994 integ_ops = &ptd->chained_integ_ops;
998 crypto_ops = &ptd->crypto_ops;
999 integ_ops = &ptd->integ_ops;
1003 esp->seq = clib_net_to_host_u32 (sa0->seq);
1007 async_op = sa0->crypto_async_enc_op_id;
1009 /* get a frame for this op if we don't yet have one or it's full
1011 if (NULL == async_frames[async_op] ||
1012 vnet_crypto_async_frame_is_full (async_frames[async_op]))
1014 async_frames[async_op] =
1015 vnet_crypto_async_get_frame (vm, async_op);
1017 if (PREDICT_FALSE (!async_frames[async_op]))
1019 err = ESP_ENCRYPT_ERROR_NO_AVAIL_FRAME;
1020 esp_encrypt_set_next_index (b[0], node, thread_index, err,
1021 n_noop, noop_nexts, drop_next,
1026 /* Save the frame to the list we'll submit at the end */
1027 vec_add1 (ptd->async_frames, async_frames[async_op]);
1030 esp_prepare_async_frame (vm, ptd, async_frames[async_op], sa0, b[0],
1031 esp, payload, payload_len, iv_sz, icv_sz,
1032 from[b - bufs], sync_next[0], hdr_len,
1033 async_next_node, lb);
1036 esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, sa0->seq_hi,
1037 payload, payload_len, iv_sz, icv_sz, n_sync, b,
1040 vlib_buffer_advance (b[0], 0LL - hdr_len);
1042 current_sa_packets += 1;
1043 current_sa_bytes += payload_len_total;
1046 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1048 esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
1050 if (INDEX_INVALID == sa_index0)
1051 clib_memset_u8 (tr, 0xff, sizeof (*tr));
1054 tr->sa_index = sa_index0;
1057 tr->sa_seq_hi = sa0->seq_hi;
1058 tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
1059 tr->crypto_alg = sa0->crypto_alg;
1060 tr->integ_alg = sa0->integ_alg;
1065 if (ESP_ENCRYPT_ERROR_RX_PKTS != err)
1067 noop_bi[n_noop] = from[b - bufs];
1072 sync_bi[n_sync] = from[b - bufs];
1073 sync_bufs[n_sync] = b[0];
1085 if (INDEX_INVALID != current_sa_index)
1086 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
1087 current_sa_index, current_sa_packets,
1091 esp_process_ops (vm, node, ptd->crypto_ops, sync_bufs, sync_nexts,
1093 esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, sync_bufs,
1094 sync_nexts, ptd->chunks, drop_next);
1096 esp_process_ops (vm, node, ptd->integ_ops, sync_bufs, sync_nexts,
1098 esp_process_chained_ops (vm, node, ptd->chained_integ_ops, sync_bufs,
1099 sync_nexts, ptd->chunks, drop_next);
1101 vlib_buffer_enqueue_to_next (vm, node, sync_bi, sync_nexts, n_sync);
1105 /* submit all of the open frames */
1106 vnet_crypto_async_frame_t **async_frame;
1108 vec_foreach (async_frame, ptd->async_frames)
1110 if (vnet_crypto_async_submit_open_frame (vm, *async_frame) < 0)
1112 n_noop += esp_async_recycle_failed_submit (
1113 vm, *async_frame, node, ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
1114 IPSEC_SA_ERROR_CRYPTO_ENGINE_ERROR, n_noop, noop_bi,
1115 noop_nexts, drop_next, true);
1116 vnet_crypto_async_reset_frame (*async_frame);
1117 vnet_crypto_async_free_frame (vm, *async_frame);
1122 vlib_buffer_enqueue_to_next (vm, node, noop_bi, noop_nexts, n_noop);
1124 vlib_node_increment_counter (vm, node->node_index, ESP_ENCRYPT_ERROR_RX_PKTS,
1127 return frame->n_vectors;
1131 esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1132 vlib_frame_t * frame)
1134 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1135 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
1136 u32 *from = vlib_frame_vector_args (frame);
1137 u32 n_left = frame->n_vectors;
1139 vlib_get_buffers (vm, from, b, n_left);
1143 vlib_prefetch_buffer_header (b[0], LOAD);
1144 vlib_prefetch_buffer_header (b[1], LOAD);
1145 vlib_prefetch_buffer_header (b[2], LOAD);
1146 vlib_prefetch_buffer_header (b[3], LOAD);
1151 vlib_prefetch_buffer_header (b[4], LOAD);
1152 vlib_prefetch_buffer_header (b[5], LOAD);
1153 vlib_prefetch_buffer_header (b[6], LOAD);
1154 vlib_prefetch_buffer_header (b[7], LOAD);
1156 next[0] = (esp_post_data (b[0]))->next_index;
1157 next[1] = (esp_post_data (b[1]))->next_index;
1158 next[2] = (esp_post_data (b[2]))->next_index;
1159 next[3] = (esp_post_data (b[3]))->next_index;
1161 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1163 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
1165 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1167 tr->next_index = next[0];
1169 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
1171 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
1173 tr->next_index = next[1];
1175 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
1177 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
1179 tr->next_index = next[2];
1181 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
1183 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
1185 tr->next_index = next[3];
1196 next[0] = (esp_post_data (b[0]))->next_index;
1197 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1199 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1201 tr->next_index = next[0];
1209 vlib_node_increment_counter (vm, node->node_index,
1210 ESP_ENCRYPT_ERROR_POST_RX_PKTS,
1212 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1213 return frame->n_vectors;
1216 VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
1217 vlib_node_runtime_t * node,
1218 vlib_frame_t * from_frame)
1220 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
1221 esp_encrypt_async_next.esp4_post_next);
1224 VLIB_REGISTER_NODE (esp4_encrypt_node) = {
1225 .name = "esp4-encrypt",
1226 .vector_size = sizeof (u32),
1227 .format_trace = format_esp_encrypt_trace,
1228 .type = VLIB_NODE_TYPE_INTERNAL,
1230 .n_errors = ESP_ENCRYPT_N_ERROR,
1231 .error_counters = esp_encrypt_error_counters,
1233 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1234 .next_nodes = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1235 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1236 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1237 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
1238 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
1239 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
1240 [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);
1250 VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
1251 .name = "esp4-encrypt-post",
1252 .vector_size = sizeof (u32),
1253 .format_trace = format_esp_post_encrypt_trace,
1254 .type = VLIB_NODE_TYPE_INTERNAL,
1255 .sibling_of = "esp4-encrypt",
1257 .n_errors = ESP_ENCRYPT_N_ERROR,
1258 .error_counters = esp_encrypt_error_counters,
1261 VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
1262 vlib_node_runtime_t * node,
1263 vlib_frame_t * from_frame)
1265 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
1266 esp_encrypt_async_next.esp6_post_next);
1269 VLIB_REGISTER_NODE (esp6_encrypt_node) = {
1270 .name = "esp6-encrypt",
1271 .vector_size = sizeof (u32),
1272 .format_trace = format_esp_encrypt_trace,
1273 .type = VLIB_NODE_TYPE_INTERNAL,
1274 .sibling_of = "esp4-encrypt",
1276 .n_errors = ESP_ENCRYPT_N_ERROR,
1277 .error_counters = esp_encrypt_error_counters,
1280 VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
1281 vlib_node_runtime_t * node,
1282 vlib_frame_t * from_frame)
1284 return esp_encrypt_post_inline (vm, node, from_frame);
1287 VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
1288 .name = "esp6-encrypt-post",
1289 .vector_size = sizeof (u32),
1290 .format_trace = format_esp_post_encrypt_trace,
1291 .type = VLIB_NODE_TYPE_INTERNAL,
1292 .sibling_of = "esp4-encrypt",
1294 .n_errors = ESP_ENCRYPT_N_ERROR,
1295 .error_counters = esp_encrypt_error_counters,
1298 VLIB_NODE_FN (esp4_encrypt_tun_node) (vlib_main_t * vm,
1299 vlib_node_runtime_t * node,
1300 vlib_frame_t * from_frame)
1302 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 1,
1303 esp_encrypt_async_next.esp4_tun_post_next);
1306 VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
1307 .name = "esp4-encrypt-tun",
1308 .vector_size = sizeof (u32),
1309 .format_trace = format_esp_encrypt_trace,
1310 .type = VLIB_NODE_TYPE_INTERNAL,
1312 .n_errors = ESP_ENCRYPT_N_ERROR,
1313 .error_counters = esp_encrypt_error_counters,
1315 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1317 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1318 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1319 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1320 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1321 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1322 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1323 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1327 VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
1328 vlib_node_runtime_t * node,
1329 vlib_frame_t * from_frame)
1331 return esp_encrypt_post_inline (vm, node, from_frame);
1334 VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
1335 .name = "esp4-encrypt-tun-post",
1336 .vector_size = sizeof (u32),
1337 .format_trace = format_esp_post_encrypt_trace,
1338 .type = VLIB_NODE_TYPE_INTERNAL,
1339 .sibling_of = "esp4-encrypt-tun",
1341 .n_errors = ESP_ENCRYPT_N_ERROR,
1342 .error_counters = esp_encrypt_error_counters,
1345 VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
1346 vlib_node_runtime_t * node,
1347 vlib_frame_t * from_frame)
1349 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
1350 esp_encrypt_async_next.esp6_tun_post_next);
1353 VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
1354 .name = "esp6-encrypt-tun",
1355 .vector_size = sizeof (u32),
1356 .format_trace = format_esp_encrypt_trace,
1357 .type = VLIB_NODE_TYPE_INTERNAL,
1359 .n_errors = ESP_ENCRYPT_N_ERROR,
1360 .error_counters = esp_encrypt_error_counters,
1362 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1364 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1365 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1366 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1367 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1368 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1369 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1370 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1375 VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
1376 vlib_node_runtime_t * node,
1377 vlib_frame_t * from_frame)
1379 return esp_encrypt_post_inline (vm, node, from_frame);
1382 VLIB_REGISTER_NODE (esp6_encrypt_tun_post_node) = {
1383 .name = "esp6-encrypt-tun-post",
1384 .vector_size = sizeof (u32),
1385 .format_trace = format_esp_post_encrypt_trace,
1386 .type = VLIB_NODE_TYPE_INTERNAL,
1387 .sibling_of = "esp-mpls-encrypt-tun",
1389 .n_errors = ESP_ENCRYPT_N_ERROR,
1390 .error_counters = esp_encrypt_error_counters,
1393 VLIB_NODE_FN (esp_mpls_encrypt_tun_node)
1394 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1396 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_MPLS, 1,
1397 esp_encrypt_async_next.esp_mpls_tun_post_next);
1400 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
1401 .name = "esp-mpls-encrypt-tun",
1402 .vector_size = sizeof (u32),
1403 .format_trace = format_esp_encrypt_trace,
1404 .type = VLIB_NODE_TYPE_INTERNAL,
1406 .n_errors = ESP_ENCRYPT_N_ERROR,
1407 .error_counters = esp_encrypt_error_counters,
1409 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1411 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1412 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1413 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1414 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1415 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1416 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1417 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1421 VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
1422 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1424 return esp_encrypt_post_inline (vm, node, from_frame);
1427 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
1428 .name = "esp-mpls-encrypt-tun-post",
1429 .vector_size = sizeof (u32),
1430 .format_trace = format_esp_post_encrypt_trace,
1431 .type = VLIB_NODE_TYPE_INTERNAL,
1432 .sibling_of = "esp-mpls-encrypt-tun",
1434 .n_errors = ESP_ENCRYPT_N_ERROR,
1435 .error_counters = esp_encrypt_error_counters,
1438 #ifndef CLIB_MARCH_VARIANT
1440 static clib_error_t *
1441 esp_encrypt_init (vlib_main_t *vm)
1443 ipsec_main_t *im = &ipsec_main;
1445 im->esp4_enc_fq_index =
1446 vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
1447 im->esp6_enc_fq_index =
1448 vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
1449 im->esp4_enc_tun_fq_index =
1450 vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
1451 im->esp6_enc_tun_fq_index =
1452 vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
1453 im->esp_mpls_enc_tun_fq_index =
1454 vlib_frame_queue_main_init (esp_mpls_encrypt_tun_node.index, 0);
1459 VLIB_INIT_FUNCTION (esp_encrypt_init);
1464 * fd.io coding-style-patch-verification: ON
1467 * eval: (c-set-style "gnu")