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;
421 nonce->ctr = clib_host_to_net_u32 (1);
424 nonce->salt = sa0->salt;
425 nonce->iv = *(u64 *) pkt_iv;
426 op->iv = (u8 *) nonce;
430 /* construct zero iv in front of the IP header */
431 op->iv = pkt_iv - hdr_len - iv_sz;
432 clib_memset_u8 (op->iv, 0, iv_sz);
433 /* include iv field in crypto */
434 crypto_start -= iv_sz;
438 if (PREDICT_FALSE (lb != b[0]))
441 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
442 op->chunk_index = vec_len (ptd->chunks);
443 op->tag = vlib_buffer_get_tail (lb) - icv_sz;
444 esp_encrypt_chain_crypto (vm, ptd, sa0, b[0], lb, icv_sz,
445 crypto_start, crypto_len + icv_sz,
451 op->src = op->dst = crypto_start;
452 op->len = crypto_len;
456 if (sa0->integ_op_id)
458 vnet_crypto_op_t *op;
459 vec_add2_aligned (integ_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
460 vnet_crypto_op_init (op, sa0->integ_op_id);
461 op->src = payload - iv_sz - sizeof (esp_header_t);
462 op->digest = payload + payload_len - icv_sz;
463 op->key_index = sa0->integ_key_index;
464 op->digest_len = icv_sz;
465 op->len = payload_len - icv_sz + iv_sz + sizeof (esp_header_t);
471 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
472 op->chunk_index = vec_len (ptd->chunks);
473 op->digest = vlib_buffer_get_tail (lb) - icv_sz;
475 esp_encrypt_chain_integ (vm, ptd, sa0, b[0], lb, icv_sz,
476 payload - iv_sz - sizeof (esp_header_t),
477 payload_len + iv_sz +
478 sizeof (esp_header_t), op->digest,
481 else if (ipsec_sa_is_set_USE_ESN (sa0))
483 u32 tmp = clib_net_to_host_u32 (seq_hi);
484 clib_memcpy_fast (op->digest, &tmp, sizeof (seq_hi));
485 op->len += sizeof (seq_hi);
490 static_always_inline void
491 esp_prepare_async_frame (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
492 vnet_crypto_async_frame_t *async_frame,
493 ipsec_sa_t *sa, vlib_buffer_t *b, esp_header_t *esp,
494 u8 *payload, u32 payload_len, u8 iv_sz, u8 icv_sz,
495 u32 bi, u16 next, u32 hdr_len, u16 async_next,
498 esp_post_data_t *post = esp_post_data (b);
499 u8 *tag, *iv, *aad = 0;
501 const u32 key_index = sa->crypto_key_index;
502 i16 crypto_start_offset, integ_start_offset;
503 u16 crypto_total_len, integ_total_len;
505 post->next_index = next;
508 crypto_start_offset = integ_start_offset = payload - b->data;
509 crypto_total_len = integ_total_len = payload_len - icv_sz;
510 tag = payload + crypto_total_len;
512 /* generate the IV in front of the payload */
513 void *pkt_iv = esp_generate_iv (sa, payload, iv_sz);
515 if (ipsec_sa_is_set_IS_CTR (sa))
517 /* construct nonce in a scratch space in front of the IP header */
518 esp_ctr_nonce_t *nonce =
519 (esp_ctr_nonce_t *) (pkt_iv - hdr_len - sizeof (*nonce));
520 if (ipsec_sa_is_set_IS_AEAD (sa))
522 /* constuct aad in a scratch space in front of the nonce */
523 aad = (u8 *) nonce - sizeof (esp_aead_t);
524 esp_aad_fill (aad, esp, sa, sa->seq_hi);
528 nonce->ctr = clib_host_to_net_u32 (1);
531 nonce->salt = sa->salt;
532 nonce->iv = *(u64 *) pkt_iv;
537 /* construct zero iv in front of the IP header */
538 iv = pkt_iv - hdr_len - iv_sz;
539 clib_memset_u8 (iv, 0, iv_sz);
540 /* include iv field in crypto */
541 crypto_start_offset -= iv_sz;
542 crypto_total_len += iv_sz;
548 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
549 tag = vlib_buffer_get_tail (lb) - icv_sz;
550 crypto_total_len = esp_encrypt_chain_crypto (
551 vm, ptd, sa, b, lb, icv_sz, b->data + crypto_start_offset,
552 crypto_total_len + icv_sz, 0);
557 integ_start_offset -= iv_sz + sizeof (esp_header_t);
558 integ_total_len += iv_sz + sizeof (esp_header_t);
562 integ_total_len = esp_encrypt_chain_integ (
563 vm, ptd, sa, b, lb, icv_sz,
564 payload - iv_sz - sizeof (esp_header_t),
565 payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
567 else if (ipsec_sa_is_set_USE_ESN (sa))
569 u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
570 clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
571 integ_total_len += sizeof (seq_hi);
575 /* this always succeeds because we know the frame is not full */
576 vnet_crypto_async_add_to_frame (vm, async_frame, key_index, crypto_total_len,
577 integ_total_len - crypto_total_len,
578 crypto_start_offset, integ_start_offset, bi,
579 async_next, iv, tag, aad, flag);
583 esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
584 vlib_frame_t *frame, vnet_link_t lt, int is_tun,
587 ipsec_main_t *im = &ipsec_main;
588 ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
589 u32 *from = vlib_frame_vector_args (frame);
590 u32 n_left = frame->n_vectors;
591 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
592 u32 thread_index = vm->thread_index;
593 u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
594 u32 current_sa_index = ~0, current_sa_packets = 0;
595 u32 current_sa_bytes = 0, spi = 0;
596 u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
599 vnet_crypto_op_t **crypto_ops = &ptd->crypto_ops;
600 vnet_crypto_op_t **integ_ops = &ptd->integ_ops;
601 vnet_crypto_async_frame_t *async_frames[VNET_CRYPTO_ASYNC_OP_N_IDS];
602 int is_async = im->async_mode;
603 vnet_crypto_async_op_id_t async_op = ~0;
605 (lt == VNET_LINK_IP6 ? ESP_ENCRYPT_NEXT_DROP6 :
606 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_DROP4 :
607 ESP_ENCRYPT_NEXT_DROP_MPLS));
608 u16 handoff_next = (lt == VNET_LINK_IP6 ?
609 ESP_ENCRYPT_NEXT_HANDOFF6 :
610 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_HANDOFF4 :
611 ESP_ENCRYPT_NEXT_HANDOFF_MPLS));
612 vlib_buffer_t *sync_bufs[VLIB_FRAME_SIZE];
613 u16 sync_nexts[VLIB_FRAME_SIZE], *sync_next = sync_nexts, n_sync = 0;
615 u16 noop_nexts[VLIB_FRAME_SIZE], n_noop = 0;
616 u32 sync_bi[VLIB_FRAME_SIZE];
617 u32 noop_bi[VLIB_FRAME_SIZE];
618 esp_encrypt_error_t err;
620 vlib_get_buffers (vm, from, b, n_left);
622 vec_reset_length (ptd->crypto_ops);
623 vec_reset_length (ptd->integ_ops);
624 vec_reset_length (ptd->chained_crypto_ops);
625 vec_reset_length (ptd->chained_integ_ops);
626 vec_reset_length (ptd->async_frames);
627 vec_reset_length (ptd->chunks);
628 clib_memset (async_frames, 0, sizeof (async_frames));
635 u8 *payload, *next_hdr_ptr;
636 u16 payload_len, payload_len_total, n_bufs;
639 err = ESP_ENCRYPT_ERROR_RX_PKTS;
644 vlib_prefetch_buffer_header (b[2], LOAD);
645 p = vlib_buffer_get_current (b[1]);
646 clib_prefetch_load (p);
647 p -= CLIB_CACHE_LINE_BYTES;
648 clib_prefetch_load (p);
649 /* speculate that the trailer goes in the first buffer */
650 CLIB_PREFETCH (vlib_buffer_get_tail (b[1]),
651 CLIB_CACHE_LINE_BYTES, LOAD);
656 /* we are on a ipsec tunnel's feature arc */
657 vnet_buffer (b[0])->ipsec.sad_index =
658 sa_index0 = ipsec_tun_protect_get_sa_out
659 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
661 if (PREDICT_FALSE (INDEX_INVALID == sa_index0))
663 err = ESP_ENCRYPT_ERROR_NO_PROTECTION;
664 noop_nexts[n_noop] = drop_next;
665 b[0]->error = node->errors[err];
670 sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
672 if (sa_index0 != current_sa_index)
674 if (current_sa_packets)
675 vlib_increment_combined_counter (
676 &ipsec_sa_counters, thread_index, current_sa_index,
677 current_sa_packets, current_sa_bytes);
678 current_sa_packets = current_sa_bytes = 0;
680 sa0 = ipsec_sa_get (sa_index0);
682 if (PREDICT_FALSE ((sa0->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
683 sa0->integ_alg == IPSEC_INTEG_ALG_NONE) &&
684 !ipsec_sa_is_set_NO_ALGO_NO_DROP (sa0)))
686 err = ESP_ENCRYPT_ERROR_NO_ENCRYPTION;
687 esp_encrypt_set_next_index (b[0], node, thread_index, err,
688 n_noop, noop_nexts, drop_next,
692 current_sa_index = sa_index0;
693 vlib_prefetch_combined_counter (&ipsec_sa_counters, thread_index,
696 /* fetch the second cacheline ASAP */
697 clib_prefetch_load (sa0->cacheline1);
699 spi = clib_net_to_host_u32 (sa0->spi);
700 esp_align = sa0->esp_block_align;
701 icv_sz = sa0->integ_icv_size;
702 iv_sz = sa0->crypto_iv_size;
703 is_async = im->async_mode | ipsec_sa_is_set_IS_ASYNC (sa0);
706 if (PREDICT_FALSE ((u16) ~0 == sa0->thread_index))
708 /* this is the first packet to use this SA, claim the SA
709 * for this thread. this could happen simultaneously on
711 clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
712 ipsec_sa_assign_thread (thread_index));
715 if (PREDICT_FALSE (thread_index != sa0->thread_index))
717 vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
718 err = ESP_ENCRYPT_ERROR_HANDOFF;
719 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
720 noop_nexts, handoff_next,
726 n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
729 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
730 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
731 noop_nexts, drop_next, current_sa_index);
737 /* find last buffer in the chain */
738 while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
739 lb = vlib_get_buffer (vm, lb->next_buffer);
742 if (PREDICT_FALSE (esp_seq_advance (sa0)))
744 err = ESP_ENCRYPT_ERROR_SEQ_CYCLED;
745 esp_encrypt_set_next_index (b[0], node, thread_index, err, n_noop,
746 noop_nexts, drop_next, current_sa_index);
753 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
755 payload = vlib_buffer_get_current (b[0]);
756 next_hdr_ptr = esp_add_footer_and_icv (
757 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
758 vlib_buffer_length_in_chain (vm, b[0]));
761 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
762 esp_encrypt_set_next_index (b[0], node, thread_index, err,
763 n_noop, noop_nexts, drop_next,
767 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
768 payload_len = b[0]->current_length;
769 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
772 hdr_len += sizeof (*esp);
773 esp = (esp_header_t *) (payload - hdr_len);
775 /* optional UDP header */
776 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
778 hdr_len += sizeof (udp_header_t);
779 esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
780 payload_len_total + hdr_len);
784 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
787 u16 len = sizeof (ip6_header_t);
789 ip6 = (ip6_header_t *) (payload - hdr_len);
790 clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
792 if (VNET_LINK_IP6 == lt)
794 *next_hdr_ptr = IP_PROTOCOL_IPV6;
795 tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
796 (const ip6_header_t *) payload,
799 else if (VNET_LINK_IP4 == lt)
801 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
802 tunnel_encap_fixup_4o6 (sa0->tunnel_flags, b[0],
803 (const ip4_header_t *) payload, ip6);
805 else if (VNET_LINK_MPLS == lt)
807 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
808 tunnel_encap_fixup_mplso6 (
809 sa0->tunnel_flags, b[0],
810 (const mpls_unicast_header_t *) payload, ip6);
815 len = payload_len_total + hdr_len - len;
816 ip6->payload_length = clib_net_to_host_u16 (len);
817 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
822 u16 len = sizeof (ip4_header_t);
824 ip4 = (ip4_header_t *) (payload - hdr_len);
825 clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
827 if (VNET_LINK_IP6 == lt)
829 *next_hdr_ptr = IP_PROTOCOL_IPV6;
830 tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
831 (const ip6_header_t *)
834 else if (VNET_LINK_IP4 == lt)
836 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
837 tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
838 (const ip4_header_t *)
841 else if (VNET_LINK_MPLS == lt)
843 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
844 tunnel_encap_fixup_mplso4_w_chksum (
845 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
851 len = payload_len_total + hdr_len;
852 esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
858 sync_next[0] = dpo->dpoi_next_node;
859 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
862 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
863 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
865 else /* transport mode */
867 u8 *l2_hdr, l2_len, *ip_hdr;
869 ip6_ext_header_t *ext_hdr;
870 udp_header_t *udp = 0;
872 u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
875 * Get extension header chain length. It might be longer than the
876 * buffer's pre_data area.
879 (VNET_LINK_IP6 == lt ?
880 esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
881 ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
882 if ((old_ip_hdr - ip_len) < &b[0]->pre_data[0])
884 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
885 esp_encrypt_set_next_index (b[0], node, thread_index, err,
886 n_noop, noop_nexts, drop_next,
891 vlib_buffer_advance (b[0], ip_len);
892 payload = vlib_buffer_get_current (b[0]);
893 next_hdr_ptr = esp_add_footer_and_icv (
894 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
895 vlib_buffer_length_in_chain (vm, b[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 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
906 payload_len = b[0]->current_length;
907 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
910 hdr_len += sizeof (*esp);
911 esp = (esp_header_t *) (payload - hdr_len);
913 /* optional UDP header */
914 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
916 hdr_len += sizeof (udp_header_t);
917 udp = (udp_header_t *) (payload - hdr_len);
922 ip_hdr = payload - hdr_len;
927 l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
929 l2_hdr = payload - hdr_len;
931 /* copy l2 and ip header */
932 clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
938 len = payload_len_total + hdr_len - l2_len;
940 if (VNET_LINK_IP6 == lt)
942 ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
943 if (PREDICT_TRUE (NULL == ext_hdr))
945 *next_hdr_ptr = ip6->protocol;
947 (udp) ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
951 *next_hdr_ptr = ext_hdr->next_hdr;
953 (udp) ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
955 ip6->payload_length =
956 clib_host_to_net_u16 (len - sizeof (ip6_header_t));
958 else if (VNET_LINK_IP4 == lt)
960 ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
961 *next_hdr_ptr = ip4->protocol;
962 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1,
966 clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
970 udp_len = len - ip_len;
971 esp_fill_udp_hdr (sa0, udp, udp_len);
974 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
979 crypto_ops = &ptd->chained_crypto_ops;
980 integ_ops = &ptd->chained_integ_ops;
984 crypto_ops = &ptd->crypto_ops;
985 integ_ops = &ptd->integ_ops;
989 esp->seq = clib_net_to_host_u32 (sa0->seq);
993 async_op = sa0->crypto_async_enc_op_id;
995 /* get a frame for this op if we don't yet have one or it's full
997 if (NULL == async_frames[async_op] ||
998 vnet_crypto_async_frame_is_full (async_frames[async_op]))
1000 async_frames[async_op] =
1001 vnet_crypto_async_get_frame (vm, async_op);
1003 if (PREDICT_FALSE (!async_frames[async_op]))
1005 err = ESP_ENCRYPT_ERROR_NO_AVAIL_FRAME;
1006 esp_encrypt_set_next_index (b[0], node, thread_index, err,
1007 n_noop, noop_nexts, drop_next,
1012 /* Save the frame to the list we'll submit at the end */
1013 vec_add1 (ptd->async_frames, async_frames[async_op]);
1016 esp_prepare_async_frame (vm, ptd, async_frames[async_op], sa0, b[0],
1017 esp, payload, payload_len, iv_sz, icv_sz,
1018 from[b - bufs], sync_next[0], hdr_len,
1019 async_next_node, lb);
1022 esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, sa0->seq_hi,
1023 payload, payload_len, iv_sz, icv_sz, n_sync, b,
1026 vlib_buffer_advance (b[0], 0LL - hdr_len);
1028 current_sa_packets += 1;
1029 current_sa_bytes += payload_len_total;
1032 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1034 esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
1036 if (INDEX_INVALID == sa_index0)
1037 clib_memset_u8 (tr, 0xff, sizeof (*tr));
1040 tr->sa_index = sa_index0;
1043 tr->sa_seq_hi = sa0->seq_hi;
1044 tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
1045 tr->crypto_alg = sa0->crypto_alg;
1046 tr->integ_alg = sa0->integ_alg;
1051 if (ESP_ENCRYPT_ERROR_RX_PKTS != err)
1053 noop_bi[n_noop] = from[b - bufs];
1058 sync_bi[n_sync] = from[b - bufs];
1059 sync_bufs[n_sync] = b[0];
1071 if (INDEX_INVALID != current_sa_index)
1072 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
1073 current_sa_index, current_sa_packets,
1077 esp_process_ops (vm, node, ptd->crypto_ops, sync_bufs, sync_nexts,
1079 esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, sync_bufs,
1080 sync_nexts, ptd->chunks, drop_next);
1082 esp_process_ops (vm, node, ptd->integ_ops, sync_bufs, sync_nexts,
1084 esp_process_chained_ops (vm, node, ptd->chained_integ_ops, sync_bufs,
1085 sync_nexts, ptd->chunks, drop_next);
1087 vlib_buffer_enqueue_to_next (vm, node, sync_bi, sync_nexts, n_sync);
1091 /* submit all of the open frames */
1092 vnet_crypto_async_frame_t **async_frame;
1094 vec_foreach (async_frame, ptd->async_frames)
1096 if (vnet_crypto_async_submit_open_frame (vm, *async_frame) < 0)
1098 n_noop += esp_async_recycle_failed_submit (
1099 vm, *async_frame, node, ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
1100 IPSEC_SA_ERROR_CRYPTO_ENGINE_ERROR, n_noop, noop_bi,
1101 noop_nexts, drop_next, true);
1102 vnet_crypto_async_reset_frame (*async_frame);
1103 vnet_crypto_async_free_frame (vm, *async_frame);
1108 vlib_buffer_enqueue_to_next (vm, node, noop_bi, noop_nexts, n_noop);
1110 vlib_node_increment_counter (vm, node->node_index, ESP_ENCRYPT_ERROR_RX_PKTS,
1113 return frame->n_vectors;
1117 esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1118 vlib_frame_t * frame)
1120 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1121 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
1122 u32 *from = vlib_frame_vector_args (frame);
1123 u32 n_left = frame->n_vectors;
1125 vlib_get_buffers (vm, from, b, n_left);
1129 vlib_prefetch_buffer_header (b[0], LOAD);
1130 vlib_prefetch_buffer_header (b[1], LOAD);
1131 vlib_prefetch_buffer_header (b[2], LOAD);
1132 vlib_prefetch_buffer_header (b[3], LOAD);
1137 vlib_prefetch_buffer_header (b[4], LOAD);
1138 vlib_prefetch_buffer_header (b[5], LOAD);
1139 vlib_prefetch_buffer_header (b[6], LOAD);
1140 vlib_prefetch_buffer_header (b[7], LOAD);
1142 next[0] = (esp_post_data (b[0]))->next_index;
1143 next[1] = (esp_post_data (b[1]))->next_index;
1144 next[2] = (esp_post_data (b[2]))->next_index;
1145 next[3] = (esp_post_data (b[3]))->next_index;
1147 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1149 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
1151 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1153 tr->next_index = next[0];
1155 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
1157 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
1159 tr->next_index = next[1];
1161 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
1163 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
1165 tr->next_index = next[2];
1167 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
1169 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
1171 tr->next_index = next[3];
1182 next[0] = (esp_post_data (b[0]))->next_index;
1183 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1185 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1187 tr->next_index = next[0];
1195 vlib_node_increment_counter (vm, node->node_index,
1196 ESP_ENCRYPT_ERROR_POST_RX_PKTS,
1198 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1199 return frame->n_vectors;
1202 VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
1203 vlib_node_runtime_t * node,
1204 vlib_frame_t * from_frame)
1206 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
1207 esp_encrypt_async_next.esp4_post_next);
1211 VLIB_REGISTER_NODE (esp4_encrypt_node) = {
1212 .name = "esp4-encrypt",
1213 .vector_size = sizeof (u32),
1214 .format_trace = format_esp_encrypt_trace,
1215 .type = VLIB_NODE_TYPE_INTERNAL,
1217 .n_errors = ESP_ENCRYPT_N_ERROR,
1218 .error_counters = esp_encrypt_error_counters,
1220 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1221 .next_nodes = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1222 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1223 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1224 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
1225 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
1226 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
1227 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output" },
1231 VLIB_NODE_FN (esp4_encrypt_post_node) (vlib_main_t * vm,
1232 vlib_node_runtime_t * node,
1233 vlib_frame_t * from_frame)
1235 return esp_encrypt_post_inline (vm, node, from_frame);
1239 VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
1240 .name = "esp4-encrypt-post",
1241 .vector_size = sizeof (u32),
1242 .format_trace = format_esp_post_encrypt_trace,
1243 .type = VLIB_NODE_TYPE_INTERNAL,
1244 .sibling_of = "esp4-encrypt",
1246 .n_errors = ESP_ENCRYPT_N_ERROR,
1247 .error_counters = esp_encrypt_error_counters,
1251 VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
1252 vlib_node_runtime_t * node,
1253 vlib_frame_t * from_frame)
1255 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
1256 esp_encrypt_async_next.esp6_post_next);
1260 VLIB_REGISTER_NODE (esp6_encrypt_node) = {
1261 .name = "esp6-encrypt",
1262 .vector_size = sizeof (u32),
1263 .format_trace = format_esp_encrypt_trace,
1264 .type = VLIB_NODE_TYPE_INTERNAL,
1265 .sibling_of = "esp4-encrypt",
1267 .n_errors = ESP_ENCRYPT_N_ERROR,
1268 .error_counters = esp_encrypt_error_counters,
1272 VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
1273 vlib_node_runtime_t * node,
1274 vlib_frame_t * from_frame)
1276 return esp_encrypt_post_inline (vm, node, from_frame);
1280 VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
1281 .name = "esp6-encrypt-post",
1282 .vector_size = sizeof (u32),
1283 .format_trace = format_esp_post_encrypt_trace,
1284 .type = VLIB_NODE_TYPE_INTERNAL,
1285 .sibling_of = "esp4-encrypt",
1287 .n_errors = ESP_ENCRYPT_N_ERROR,
1288 .error_counters = esp_encrypt_error_counters,
1292 VLIB_NODE_FN (esp4_encrypt_tun_node) (vlib_main_t * vm,
1293 vlib_node_runtime_t * node,
1294 vlib_frame_t * from_frame)
1296 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 1,
1297 esp_encrypt_async_next.esp4_tun_post_next);
1301 VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
1302 .name = "esp4-encrypt-tun",
1303 .vector_size = sizeof (u32),
1304 .format_trace = format_esp_encrypt_trace,
1305 .type = VLIB_NODE_TYPE_INTERNAL,
1307 .n_errors = ESP_ENCRYPT_N_ERROR,
1308 .error_counters = esp_encrypt_error_counters,
1310 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1312 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1313 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1314 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1315 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1316 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1317 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1318 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1322 VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
1323 vlib_node_runtime_t * node,
1324 vlib_frame_t * from_frame)
1326 return esp_encrypt_post_inline (vm, node, from_frame);
1330 VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
1331 .name = "esp4-encrypt-tun-post",
1332 .vector_size = sizeof (u32),
1333 .format_trace = format_esp_post_encrypt_trace,
1334 .type = VLIB_NODE_TYPE_INTERNAL,
1335 .sibling_of = "esp4-encrypt-tun",
1337 .n_errors = ESP_ENCRYPT_N_ERROR,
1338 .error_counters = esp_encrypt_error_counters,
1342 VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
1343 vlib_node_runtime_t * node,
1344 vlib_frame_t * from_frame)
1346 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
1347 esp_encrypt_async_next.esp6_tun_post_next);
1351 VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
1352 .name = "esp6-encrypt-tun",
1353 .vector_size = sizeof (u32),
1354 .format_trace = format_esp_encrypt_trace,
1355 .type = VLIB_NODE_TYPE_INTERNAL,
1357 .n_errors = ESP_ENCRYPT_N_ERROR,
1358 .error_counters = esp_encrypt_error_counters,
1360 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1362 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1363 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1364 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1365 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1366 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1367 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1368 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1374 VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
1375 vlib_node_runtime_t * node,
1376 vlib_frame_t * from_frame)
1378 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,
1394 VLIB_NODE_FN (esp_mpls_encrypt_tun_node)
1395 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1397 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_MPLS, 1,
1398 esp_encrypt_async_next.esp_mpls_tun_post_next);
1401 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
1402 .name = "esp-mpls-encrypt-tun",
1403 .vector_size = sizeof (u32),
1404 .format_trace = format_esp_encrypt_trace,
1405 .type = VLIB_NODE_TYPE_INTERNAL,
1407 .n_errors = ESP_ENCRYPT_N_ERROR,
1408 .error_counters = esp_encrypt_error_counters,
1410 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1412 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1413 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1414 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1415 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1416 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1417 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1418 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1422 VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
1423 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1425 return esp_encrypt_post_inline (vm, node, from_frame);
1428 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
1429 .name = "esp-mpls-encrypt-tun-post",
1430 .vector_size = sizeof (u32),
1431 .format_trace = format_esp_post_encrypt_trace,
1432 .type = VLIB_NODE_TYPE_INTERNAL,
1433 .sibling_of = "esp-mpls-encrypt-tun",
1435 .n_errors = ESP_ENCRYPT_N_ERROR,
1436 .error_counters = esp_encrypt_error_counters,
1439 #ifndef CLIB_MARCH_VARIANT
1441 static clib_error_t *
1442 esp_encrypt_init (vlib_main_t *vm)
1444 ipsec_main_t *im = &ipsec_main;
1446 im->esp4_enc_fq_index =
1447 vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
1448 im->esp6_enc_fq_index =
1449 vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
1450 im->esp4_enc_tun_fq_index =
1451 vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
1452 im->esp6_enc_tun_fq_index =
1453 vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
1454 im->esp_mpls_enc_tun_fq_index =
1455 vlib_frame_queue_main_init (esp_mpls_encrypt_tun_node.index, 0);
1460 VLIB_INIT_FUNCTION (esp_encrypt_init);
1465 * fd.io coding-style-patch-verification: ON
1468 * eval: (c-set-style "gnu")