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) != 0));
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 * We use a packet counter as the IV for CTR and GCM, and to ensure the
223 * IV is unpredictable for CBC, it is then encrypted using the same key
224 * as the message. You can refer to NIST SP800-38a and NIST SP800-38d
225 * for more details. */
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 = sa->iv_counter++;
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 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
258 nexts[bi] = drop_next;
265 static_always_inline void
266 esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
267 vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts,
270 u32 n_fail, n_ops = vec_len (ops);
271 vnet_crypto_op_t *op = ops;
276 n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
280 ASSERT (op - ops < n_ops);
282 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
284 u32 bi = op->user_data;
285 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
286 nexts[bi] = drop_next;
293 static_always_inline u32
294 esp_encrypt_chain_crypto (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
295 ipsec_sa_t * sa0, vlib_buffer_t * b,
296 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
297 u32 start_len, u16 * n_ch)
299 vnet_crypto_op_chunk_t *ch;
300 vlib_buffer_t *cb = b;
303 vec_add2 (ptd->chunks, ch, 1);
304 total_len = ch->len = start_len;
305 ch->src = ch->dst = start;
306 cb = vlib_get_buffer (vm, cb->next_buffer);
310 vec_add2 (ptd->chunks, ch, 1);
313 total_len += ch->len = cb->current_length - icv_sz;
315 total_len += ch->len = cb->current_length;
316 ch->src = ch->dst = vlib_buffer_get_current (cb);
318 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
321 cb = vlib_get_buffer (vm, cb->next_buffer);
330 static_always_inline u32
331 esp_encrypt_chain_integ (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
332 ipsec_sa_t * sa0, vlib_buffer_t * b,
333 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
334 u32 start_len, u8 * digest, u16 * n_ch)
336 vnet_crypto_op_chunk_t *ch;
337 vlib_buffer_t *cb = b;
340 vec_add2 (ptd->chunks, ch, 1);
341 total_len = ch->len = start_len;
343 cb = vlib_get_buffer (vm, cb->next_buffer);
347 vec_add2 (ptd->chunks, ch, 1);
351 total_len += ch->len = cb->current_length - icv_sz;
352 if (ipsec_sa_is_set_USE_ESN (sa0))
354 u32 seq_hi = clib_net_to_host_u32 (sa0->seq_hi);
355 clib_memcpy_fast (digest, &seq_hi, sizeof (seq_hi));
356 ch->len += sizeof (seq_hi);
357 total_len += sizeof (seq_hi);
361 total_len += ch->len = cb->current_length;
362 ch->src = vlib_buffer_get_current (cb);
364 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
367 cb = vlib_get_buffer (vm, cb->next_buffer);
377 esp_prepare_sync_op (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
378 vnet_crypto_op_t **crypto_ops,
379 vnet_crypto_op_t **integ_ops, ipsec_sa_t *sa0, u32 seq_hi,
380 u8 *payload, u16 payload_len, u8 iv_sz, u8 icv_sz, u32 bi,
381 vlib_buffer_t **b, vlib_buffer_t *lb, u32 hdr_len,
384 if (sa0->crypto_enc_op_id)
386 vnet_crypto_op_t *op;
387 vec_add2_aligned (crypto_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
388 vnet_crypto_op_init (op, sa0->crypto_enc_op_id);
389 u8 *crypto_start = payload;
390 /* esp_add_footer_and_icv() in esp_encrypt_inline() makes sure we always
391 * have enough space for ESP header and footer which includes ICV */
392 ASSERT (payload_len > icv_sz);
393 u16 crypto_len = payload_len - icv_sz;
395 /* generate the IV in front of the payload */
396 void *pkt_iv = esp_generate_iv (sa0, payload, iv_sz);
398 op->key_index = sa0->crypto_key_index;
401 if (ipsec_sa_is_set_IS_CTR (sa0))
403 /* construct nonce in a scratch space in front of the IP header */
404 esp_ctr_nonce_t *nonce =
405 (esp_ctr_nonce_t *) (pkt_iv - hdr_len - sizeof (*nonce));
406 if (ipsec_sa_is_set_IS_AEAD (sa0))
408 /* constuct aad in a scratch space in front of the nonce */
409 op->aad = (u8 *) nonce - sizeof (esp_aead_t);
410 op->aad_len = esp_aad_fill (op->aad, esp, sa0, seq_hi);
411 op->tag = payload + crypto_len;
416 nonce->ctr = clib_host_to_net_u32 (1);
419 nonce->salt = sa0->salt;
420 nonce->iv = *(u64 *) pkt_iv;
421 op->iv = (u8 *) nonce;
425 /* construct zero iv in front of the IP header */
426 op->iv = pkt_iv - hdr_len - iv_sz;
427 clib_memset_u8 (op->iv, 0, iv_sz);
428 /* include iv field in crypto */
429 crypto_start -= iv_sz;
436 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
437 op->chunk_index = vec_len (ptd->chunks);
438 op->tag = vlib_buffer_get_tail (lb) - icv_sz;
439 esp_encrypt_chain_crypto (vm, ptd, sa0, b[0], lb, icv_sz,
440 crypto_start, crypto_len + icv_sz,
446 op->src = op->dst = crypto_start;
447 op->len = crypto_len;
451 if (sa0->integ_op_id)
453 vnet_crypto_op_t *op;
454 vec_add2_aligned (integ_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
455 vnet_crypto_op_init (op, sa0->integ_op_id);
456 op->src = payload - iv_sz - sizeof (esp_header_t);
457 op->digest = payload + payload_len - icv_sz;
458 op->key_index = sa0->integ_key_index;
459 op->digest_len = icv_sz;
460 op->len = payload_len - icv_sz + iv_sz + sizeof (esp_header_t);
466 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
467 op->chunk_index = vec_len (ptd->chunks);
468 op->digest = vlib_buffer_get_tail (lb) - icv_sz;
470 esp_encrypt_chain_integ (vm, ptd, sa0, b[0], lb, icv_sz,
471 payload - iv_sz - sizeof (esp_header_t),
472 payload_len + iv_sz +
473 sizeof (esp_header_t), op->digest,
476 else if (ipsec_sa_is_set_USE_ESN (sa0))
478 u32 tmp = clib_net_to_host_u32 (seq_hi);
479 clib_memcpy_fast (op->digest, &tmp, sizeof (seq_hi));
480 op->len += sizeof (seq_hi);
485 static_always_inline void
486 esp_prepare_async_frame (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
487 vnet_crypto_async_frame_t *async_frame,
488 ipsec_sa_t *sa, vlib_buffer_t *b, esp_header_t *esp,
489 u8 *payload, u32 payload_len, u8 iv_sz, u8 icv_sz,
490 u32 bi, u16 next, u32 hdr_len, u16 async_next,
493 esp_post_data_t *post = esp_post_data (b);
494 u8 *tag, *iv, *aad = 0;
497 i16 crypto_start_offset, integ_start_offset;
498 u16 crypto_total_len, integ_total_len;
500 post->next_index = next;
503 crypto_start_offset = integ_start_offset = payload - b->data;
504 crypto_total_len = integ_total_len = payload_len - icv_sz;
505 tag = payload + crypto_total_len;
507 key_index = sa->linked_key_index;
509 /* generate the IV in front of the payload */
510 void *pkt_iv = esp_generate_iv (sa, payload, iv_sz);
512 if (ipsec_sa_is_set_IS_CTR (sa))
514 /* construct nonce in a scratch space in front of the IP header */
515 esp_ctr_nonce_t *nonce =
516 (esp_ctr_nonce_t *) (pkt_iv - hdr_len - sizeof (*nonce));
517 if (ipsec_sa_is_set_IS_AEAD (sa))
519 /* constuct aad in a scratch space in front of the nonce */
520 aad = (u8 *) nonce - sizeof (esp_aead_t);
521 esp_aad_fill (aad, esp, sa, sa->seq_hi);
522 key_index = sa->crypto_key_index;
526 nonce->ctr = clib_host_to_net_u32 (1);
529 nonce->salt = sa->salt;
530 nonce->iv = *(u64 *) pkt_iv;
535 /* construct zero iv in front of the IP header */
536 iv = pkt_iv - hdr_len - iv_sz;
537 clib_memset_u8 (iv, 0, iv_sz);
538 /* include iv field in crypto */
539 crypto_start_offset -= iv_sz;
540 crypto_total_len += iv_sz;
546 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
547 tag = vlib_buffer_get_tail (lb) - icv_sz;
548 crypto_total_len = esp_encrypt_chain_crypto (
549 vm, ptd, sa, b, lb, icv_sz, b->data + crypto_start_offset,
550 crypto_total_len + icv_sz, 0);
555 integ_start_offset -= iv_sz + sizeof (esp_header_t);
556 integ_total_len += iv_sz + sizeof (esp_header_t);
560 integ_total_len = esp_encrypt_chain_integ (
561 vm, ptd, sa, b, lb, icv_sz,
562 payload - iv_sz - sizeof (esp_header_t),
563 payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
565 else if (ipsec_sa_is_set_USE_ESN (sa))
567 u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
568 clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
569 integ_total_len += sizeof (seq_hi);
573 /* this always succeeds because we know the frame is not full */
574 vnet_crypto_async_add_to_frame (vm, async_frame, key_index, crypto_total_len,
575 integ_total_len - crypto_total_len,
576 crypto_start_offset, integ_start_offset, bi,
577 async_next, iv, tag, aad, flag);
581 esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
582 vlib_frame_t *frame, vnet_link_t lt, int is_tun,
585 ipsec_main_t *im = &ipsec_main;
586 ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
587 u32 *from = vlib_frame_vector_args (frame);
588 u32 n_left = frame->n_vectors;
589 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
590 u32 thread_index = vm->thread_index;
591 u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
592 u32 current_sa_index = ~0, current_sa_packets = 0;
593 u32 current_sa_bytes = 0, spi = 0;
594 u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
597 vnet_crypto_op_t **crypto_ops = &ptd->crypto_ops;
598 vnet_crypto_op_t **integ_ops = &ptd->integ_ops;
599 vnet_crypto_async_frame_t *async_frames[VNET_CRYPTO_ASYNC_OP_N_IDS];
600 int is_async = im->async_mode;
601 vnet_crypto_async_op_id_t async_op = ~0;
603 (lt == VNET_LINK_IP6 ? ESP_ENCRYPT_NEXT_DROP6 :
604 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_DROP4 :
605 ESP_ENCRYPT_NEXT_DROP_MPLS));
606 u16 handoff_next = (lt == VNET_LINK_IP6 ?
607 ESP_ENCRYPT_NEXT_HANDOFF6 :
608 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_HANDOFF4 :
609 ESP_ENCRYPT_NEXT_HANDOFF_MPLS));
610 vlib_buffer_t *sync_bufs[VLIB_FRAME_SIZE];
611 u16 sync_nexts[VLIB_FRAME_SIZE], *sync_next = sync_nexts, n_sync = 0;
613 u16 noop_nexts[VLIB_FRAME_SIZE], n_noop = 0;
614 u32 sync_bi[VLIB_FRAME_SIZE];
615 u32 noop_bi[VLIB_FRAME_SIZE];
616 esp_encrypt_error_t err;
618 vlib_get_buffers (vm, from, b, n_left);
620 vec_reset_length (ptd->crypto_ops);
621 vec_reset_length (ptd->integ_ops);
622 vec_reset_length (ptd->chained_crypto_ops);
623 vec_reset_length (ptd->chained_integ_ops);
624 vec_reset_length (ptd->async_frames);
625 vec_reset_length (ptd->chunks);
626 clib_memset (async_frames, 0, sizeof (async_frames));
633 u8 *payload, *next_hdr_ptr;
634 u16 payload_len, payload_len_total, n_bufs;
637 err = ESP_ENCRYPT_ERROR_RX_PKTS;
642 vlib_prefetch_buffer_header (b[2], LOAD);
643 p = vlib_buffer_get_current (b[1]);
644 clib_prefetch_load (p);
645 p -= CLIB_CACHE_LINE_BYTES;
646 clib_prefetch_load (p);
647 /* speculate that the trailer goes in the first buffer */
648 CLIB_PREFETCH (vlib_buffer_get_tail (b[1]),
649 CLIB_CACHE_LINE_BYTES, LOAD);
654 /* we are on a ipsec tunnel's feature arc */
655 vnet_buffer (b[0])->ipsec.sad_index =
656 sa_index0 = ipsec_tun_protect_get_sa_out
657 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
659 if (PREDICT_FALSE (INDEX_INVALID == sa_index0))
661 err = ESP_ENCRYPT_ERROR_NO_PROTECTION;
662 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
668 sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
670 if (sa_index0 != current_sa_index)
672 if (current_sa_packets)
673 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
677 current_sa_packets = current_sa_bytes = 0;
679 sa0 = ipsec_sa_get (sa_index0);
681 if (PREDICT_FALSE ((sa0->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
682 sa0->integ_alg == IPSEC_INTEG_ALG_NONE) &&
683 !ipsec_sa_is_set_NO_ALGO_NO_DROP (sa0)))
685 err = ESP_ENCRYPT_ERROR_NO_ENCRYPTION;
686 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
690 /* fetch the second cacheline ASAP */
691 clib_prefetch_load (sa0->cacheline1);
693 current_sa_index = sa_index0;
694 spi = clib_net_to_host_u32 (sa0->spi);
695 esp_align = sa0->esp_block_align;
696 icv_sz = sa0->integ_icv_size;
697 iv_sz = sa0->crypto_iv_size;
698 is_async = im->async_mode | ipsec_sa_is_set_IS_ASYNC (sa0);
701 if (PREDICT_FALSE (~0 == sa0->thread_index))
703 /* this is the first packet to use this SA, claim the SA
704 * for this thread. this could happen simultaneously on
706 clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
707 ipsec_sa_assign_thread (thread_index));
710 if (PREDICT_FALSE (thread_index != sa0->thread_index))
712 vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
713 err = ESP_ENCRYPT_ERROR_HANDOFF;
714 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
720 n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
723 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
724 esp_set_next_index (b[0], node, err, n_noop, noop_nexts, drop_next);
730 /* find last buffer in the chain */
731 while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
732 lb = vlib_get_buffer (vm, lb->next_buffer);
735 if (PREDICT_FALSE (esp_seq_advance (sa0)))
737 err = ESP_ENCRYPT_ERROR_SEQ_CYCLED;
738 esp_set_next_index (b[0], node, err, n_noop, noop_nexts, drop_next);
745 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
747 payload = vlib_buffer_get_current (b[0]);
748 next_hdr_ptr = esp_add_footer_and_icv (
749 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
750 vlib_buffer_length_in_chain (vm, b[0]));
753 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
754 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
758 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
759 payload_len = b[0]->current_length;
760 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
763 hdr_len += sizeof (*esp);
764 esp = (esp_header_t *) (payload - hdr_len);
766 /* optional UDP header */
767 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
769 hdr_len += sizeof (udp_header_t);
770 esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
771 payload_len_total + hdr_len);
775 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
778 u16 len = sizeof (ip6_header_t);
780 ip6 = (ip6_header_t *) (payload - hdr_len);
781 clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
783 if (VNET_LINK_IP6 == lt)
785 *next_hdr_ptr = IP_PROTOCOL_IPV6;
786 tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
787 (const ip6_header_t *) payload,
790 else if (VNET_LINK_IP4 == lt)
792 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
793 tunnel_encap_fixup_4o6 (sa0->tunnel_flags, b[0],
794 (const ip4_header_t *) payload, ip6);
796 else if (VNET_LINK_MPLS == lt)
798 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
799 tunnel_encap_fixup_mplso6 (
800 sa0->tunnel_flags, b[0],
801 (const mpls_unicast_header_t *) payload, ip6);
806 len = payload_len_total + hdr_len - len;
807 ip6->payload_length = clib_net_to_host_u16 (len);
808 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
813 u16 len = sizeof (ip4_header_t);
815 ip4 = (ip4_header_t *) (payload - hdr_len);
816 clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
818 if (VNET_LINK_IP6 == lt)
820 *next_hdr_ptr = IP_PROTOCOL_IPV6;
821 tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
822 (const ip6_header_t *)
825 else if (VNET_LINK_IP4 == lt)
827 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
828 tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
829 (const ip4_header_t *)
832 else if (VNET_LINK_MPLS == lt)
834 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
835 tunnel_encap_fixup_mplso4_w_chksum (
836 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
842 len = payload_len_total + hdr_len;
843 esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
849 sync_next[0] = dpo->dpoi_next_node;
850 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
853 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
854 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
856 else /* transport mode */
858 u8 *l2_hdr, l2_len, *ip_hdr;
860 ip6_ext_header_t *ext_hdr;
861 udp_header_t *udp = 0;
863 u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
866 * Get extension header chain length. It might be longer than the
867 * buffer's pre_data area.
870 (VNET_LINK_IP6 == lt ?
871 esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
872 ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
873 if ((old_ip_hdr - ip_len) < &b[0]->pre_data[0])
875 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
876 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
881 vlib_buffer_advance (b[0], ip_len);
882 payload = vlib_buffer_get_current (b[0]);
883 next_hdr_ptr = esp_add_footer_and_icv (
884 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
885 vlib_buffer_length_in_chain (vm, b[0]));
888 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
889 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
894 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
895 payload_len = b[0]->current_length;
896 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
899 hdr_len += sizeof (*esp);
900 esp = (esp_header_t *) (payload - hdr_len);
902 /* optional UDP header */
903 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
905 hdr_len += sizeof (udp_header_t);
906 udp = (udp_header_t *) (payload - hdr_len);
911 ip_hdr = payload - hdr_len;
916 l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
918 l2_hdr = payload - hdr_len;
920 /* copy l2 and ip header */
921 clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
927 len = payload_len_total + hdr_len - l2_len;
929 if (VNET_LINK_IP6 == lt)
931 ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
932 if (PREDICT_TRUE (NULL == ext_hdr))
934 *next_hdr_ptr = ip6->protocol;
936 (udp) ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
940 *next_hdr_ptr = ext_hdr->next_hdr;
942 (udp) ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
944 ip6->payload_length =
945 clib_host_to_net_u16 (len - sizeof (ip6_header_t));
947 else if (VNET_LINK_IP4 == lt)
949 ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
950 *next_hdr_ptr = ip4->protocol;
951 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1,
955 clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
959 udp_len = len - ip_len;
960 esp_fill_udp_hdr (sa0, udp, udp_len);
963 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
968 crypto_ops = &ptd->chained_crypto_ops;
969 integ_ops = &ptd->chained_integ_ops;
973 crypto_ops = &ptd->crypto_ops;
974 integ_ops = &ptd->integ_ops;
978 esp->seq = clib_net_to_host_u32 (sa0->seq);
982 async_op = sa0->crypto_async_enc_op_id;
984 /* get a frame for this op if we don't yet have one or it's full
986 if (NULL == async_frames[async_op] ||
987 vnet_crypto_async_frame_is_full (async_frames[async_op]))
989 async_frames[async_op] =
990 vnet_crypto_async_get_frame (vm, async_op);
991 /* Save the frame to the list we'll submit at the end */
992 vec_add1 (ptd->async_frames, async_frames[async_op]);
995 esp_prepare_async_frame (vm, ptd, async_frames[async_op], sa0, b[0],
996 esp, payload, payload_len, iv_sz, icv_sz,
997 from[b - bufs], sync_next[0], hdr_len,
998 async_next_node, lb);
1001 esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, sa0->seq_hi,
1002 payload, payload_len, iv_sz, icv_sz, n_sync, b,
1005 vlib_buffer_advance (b[0], 0LL - hdr_len);
1007 current_sa_packets += 1;
1008 current_sa_bytes += payload_len_total;
1011 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1013 esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
1015 if (INDEX_INVALID == sa_index0)
1016 clib_memset_u8 (tr, 0xff, sizeof (*tr));
1019 tr->sa_index = sa_index0;
1022 tr->sa_seq_hi = sa0->seq_hi;
1023 tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
1024 tr->crypto_alg = sa0->crypto_alg;
1025 tr->integ_alg = sa0->integ_alg;
1030 if (ESP_ENCRYPT_ERROR_RX_PKTS != err)
1032 noop_bi[n_noop] = from[b - bufs];
1037 sync_bi[n_sync] = from[b - bufs];
1038 sync_bufs[n_sync] = b[0];
1050 if (INDEX_INVALID != current_sa_index)
1051 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
1052 current_sa_index, current_sa_packets,
1056 esp_process_ops (vm, node, ptd->crypto_ops, sync_bufs, sync_nexts,
1058 esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, sync_bufs,
1059 sync_nexts, ptd->chunks, drop_next);
1061 esp_process_ops (vm, node, ptd->integ_ops, sync_bufs, sync_nexts,
1063 esp_process_chained_ops (vm, node, ptd->chained_integ_ops, sync_bufs,
1064 sync_nexts, ptd->chunks, drop_next);
1066 vlib_buffer_enqueue_to_next (vm, node, sync_bi, sync_nexts, n_sync);
1070 /* submit all of the open frames */
1071 vnet_crypto_async_frame_t **async_frame;
1073 vec_foreach (async_frame, ptd->async_frames)
1075 if (vnet_crypto_async_submit_open_frame (vm, *async_frame) < 0)
1077 n_noop += esp_async_recycle_failed_submit (
1078 vm, *async_frame, node, ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
1079 n_noop, noop_bi, noop_nexts, drop_next);
1080 vnet_crypto_async_reset_frame (*async_frame);
1081 vnet_crypto_async_free_frame (vm, *async_frame);
1086 vlib_buffer_enqueue_to_next (vm, node, noop_bi, noop_nexts, n_noop);
1088 vlib_node_increment_counter (vm, node->node_index, ESP_ENCRYPT_ERROR_RX_PKTS,
1091 return frame->n_vectors;
1095 esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1096 vlib_frame_t * frame)
1098 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1099 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
1100 u32 *from = vlib_frame_vector_args (frame);
1101 u32 n_left = frame->n_vectors;
1103 vlib_get_buffers (vm, from, b, n_left);
1107 vlib_prefetch_buffer_header (b[0], LOAD);
1108 vlib_prefetch_buffer_header (b[1], LOAD);
1109 vlib_prefetch_buffer_header (b[2], LOAD);
1110 vlib_prefetch_buffer_header (b[3], LOAD);
1115 vlib_prefetch_buffer_header (b[4], LOAD);
1116 vlib_prefetch_buffer_header (b[5], LOAD);
1117 vlib_prefetch_buffer_header (b[6], LOAD);
1118 vlib_prefetch_buffer_header (b[7], LOAD);
1120 next[0] = (esp_post_data (b[0]))->next_index;
1121 next[1] = (esp_post_data (b[1]))->next_index;
1122 next[2] = (esp_post_data (b[2]))->next_index;
1123 next[3] = (esp_post_data (b[3]))->next_index;
1125 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1127 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
1129 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1131 tr->next_index = next[0];
1133 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
1135 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
1137 tr->next_index = next[1];
1139 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
1141 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
1143 tr->next_index = next[2];
1145 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
1147 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
1149 tr->next_index = next[3];
1160 next[0] = (esp_post_data (b[0]))->next_index;
1161 if (PREDICT_FALSE (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];
1173 vlib_node_increment_counter (vm, node->node_index,
1174 ESP_ENCRYPT_ERROR_POST_RX_PKTS,
1176 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1177 return frame->n_vectors;
1180 VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
1181 vlib_node_runtime_t * node,
1182 vlib_frame_t * from_frame)
1184 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
1185 esp_encrypt_async_next.esp4_post_next);
1189 VLIB_REGISTER_NODE (esp4_encrypt_node) = {
1190 .name = "esp4-encrypt",
1191 .vector_size = sizeof (u32),
1192 .format_trace = format_esp_encrypt_trace,
1193 .type = VLIB_NODE_TYPE_INTERNAL,
1195 .n_errors = ESP_ENCRYPT_N_ERROR,
1196 .error_counters = esp_encrypt_error_counters,
1198 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1199 .next_nodes = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1200 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1201 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1202 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
1203 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
1204 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
1205 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output" },
1209 VLIB_NODE_FN (esp4_encrypt_post_node) (vlib_main_t * vm,
1210 vlib_node_runtime_t * node,
1211 vlib_frame_t * from_frame)
1213 return esp_encrypt_post_inline (vm, node, from_frame);
1217 VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
1218 .name = "esp4-encrypt-post",
1219 .vector_size = sizeof (u32),
1220 .format_trace = format_esp_post_encrypt_trace,
1221 .type = VLIB_NODE_TYPE_INTERNAL,
1222 .sibling_of = "esp4-encrypt",
1224 .n_errors = ESP_ENCRYPT_N_ERROR,
1225 .error_counters = esp_encrypt_error_counters,
1229 VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
1230 vlib_node_runtime_t * node,
1231 vlib_frame_t * from_frame)
1233 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
1234 esp_encrypt_async_next.esp6_post_next);
1238 VLIB_REGISTER_NODE (esp6_encrypt_node) = {
1239 .name = "esp6-encrypt",
1240 .vector_size = sizeof (u32),
1241 .format_trace = format_esp_encrypt_trace,
1242 .type = VLIB_NODE_TYPE_INTERNAL,
1243 .sibling_of = "esp4-encrypt",
1245 .n_errors = ESP_ENCRYPT_N_ERROR,
1246 .error_counters = esp_encrypt_error_counters,
1250 VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
1251 vlib_node_runtime_t * node,
1252 vlib_frame_t * from_frame)
1254 return esp_encrypt_post_inline (vm, node, from_frame);
1258 VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
1259 .name = "esp6-encrypt-post",
1260 .vector_size = sizeof (u32),
1261 .format_trace = format_esp_post_encrypt_trace,
1262 .type = VLIB_NODE_TYPE_INTERNAL,
1263 .sibling_of = "esp4-encrypt",
1265 .n_errors = ESP_ENCRYPT_N_ERROR,
1266 .error_counters = esp_encrypt_error_counters,
1270 VLIB_NODE_FN (esp4_encrypt_tun_node) (vlib_main_t * vm,
1271 vlib_node_runtime_t * node,
1272 vlib_frame_t * from_frame)
1274 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 1,
1275 esp_encrypt_async_next.esp4_tun_post_next);
1279 VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
1280 .name = "esp4-encrypt-tun",
1281 .vector_size = sizeof (u32),
1282 .format_trace = format_esp_encrypt_trace,
1283 .type = VLIB_NODE_TYPE_INTERNAL,
1285 .n_errors = ESP_ENCRYPT_N_ERROR,
1286 .error_counters = esp_encrypt_error_counters,
1288 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1290 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1291 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1292 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1293 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1294 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1295 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1296 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1300 VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
1301 vlib_node_runtime_t * node,
1302 vlib_frame_t * from_frame)
1304 return esp_encrypt_post_inline (vm, node, from_frame);
1308 VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
1309 .name = "esp4-encrypt-tun-post",
1310 .vector_size = sizeof (u32),
1311 .format_trace = format_esp_post_encrypt_trace,
1312 .type = VLIB_NODE_TYPE_INTERNAL,
1313 .sibling_of = "esp4-encrypt-tun",
1315 .n_errors = ESP_ENCRYPT_N_ERROR,
1316 .error_counters = esp_encrypt_error_counters,
1320 VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
1321 vlib_node_runtime_t * node,
1322 vlib_frame_t * from_frame)
1324 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
1325 esp_encrypt_async_next.esp6_tun_post_next);
1329 VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
1330 .name = "esp6-encrypt-tun",
1331 .vector_size = sizeof (u32),
1332 .format_trace = format_esp_encrypt_trace,
1333 .type = VLIB_NODE_TYPE_INTERNAL,
1335 .n_errors = ESP_ENCRYPT_N_ERROR,
1336 .error_counters = esp_encrypt_error_counters,
1338 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1340 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1341 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1342 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1343 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1344 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1345 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1346 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1352 VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
1353 vlib_node_runtime_t * node,
1354 vlib_frame_t * from_frame)
1356 return esp_encrypt_post_inline (vm, node, from_frame);
1360 VLIB_REGISTER_NODE (esp6_encrypt_tun_post_node) = {
1361 .name = "esp6-encrypt-tun-post",
1362 .vector_size = sizeof (u32),
1363 .format_trace = format_esp_post_encrypt_trace,
1364 .type = VLIB_NODE_TYPE_INTERNAL,
1365 .sibling_of = "esp-mpls-encrypt-tun",
1367 .n_errors = ESP_ENCRYPT_N_ERROR,
1368 .error_counters = esp_encrypt_error_counters,
1372 VLIB_NODE_FN (esp_mpls_encrypt_tun_node)
1373 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1375 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_MPLS, 1,
1376 esp_encrypt_async_next.esp_mpls_tun_post_next);
1379 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
1380 .name = "esp-mpls-encrypt-tun",
1381 .vector_size = sizeof (u32),
1382 .format_trace = format_esp_encrypt_trace,
1383 .type = VLIB_NODE_TYPE_INTERNAL,
1385 .n_errors = ESP_ENCRYPT_N_ERROR,
1386 .error_counters = esp_encrypt_error_counters,
1388 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1390 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1391 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1392 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1393 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1394 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1395 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1396 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1400 VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
1401 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1403 return esp_encrypt_post_inline (vm, node, from_frame);
1406 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
1407 .name = "esp-mpls-encrypt-tun-post",
1408 .vector_size = sizeof (u32),
1409 .format_trace = format_esp_post_encrypt_trace,
1410 .type = VLIB_NODE_TYPE_INTERNAL,
1411 .sibling_of = "esp-mpls-encrypt-tun",
1413 .n_errors = ESP_ENCRYPT_N_ERROR,
1414 .error_counters = esp_encrypt_error_counters,
1417 #ifndef CLIB_MARCH_VARIANT
1419 static clib_error_t *
1420 esp_encrypt_init (vlib_main_t *vm)
1422 ipsec_main_t *im = &ipsec_main;
1424 im->esp4_enc_fq_index =
1425 vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
1426 im->esp6_enc_fq_index =
1427 vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
1428 im->esp4_enc_tun_fq_index =
1429 vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
1430 im->esp6_enc_tun_fq_index =
1431 vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
1432 im->esp_mpls_enc_tun_fq_index =
1433 vlib_frame_queue_main_init (esp_mpls_encrypt_tun_node.index, 0);
1438 VLIB_INIT_FUNCTION (esp_encrypt_init);
1443 * fd.io coding-style-patch-verification: ON
1446 * eval: (c-set-style "gnu")