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/esp.h>
27 #include <vnet/tunnel/tunnel_dp.h>
29 #define foreach_esp_encrypt_next \
30 _ (DROP4, "ip4-drop") \
31 _ (DROP6, "ip6-drop") \
32 _ (DROP_MPLS, "mpls-drop") \
33 _ (HANDOFF4, "handoff4") \
34 _ (HANDOFF6, "handoff6") \
35 _ (HANDOFF_MPLS, "handoff-mpls") \
36 _ (INTERFACE_OUTPUT, "interface-output")
38 #define _(v, s) ESP_ENCRYPT_NEXT_##v,
41 foreach_esp_encrypt_next
46 #define foreach_esp_encrypt_error \
47 _ (RX_PKTS, "ESP pkts received") \
48 _ (POST_RX_PKTS, "ESP-post pkts received") \
49 _ (HANDOFF, "Hand-off") \
50 _ (SEQ_CYCLED, "sequence number cycled (packet dropped)") \
51 _ (CRYPTO_ENGINE_ERROR, "crypto engine error (packet dropped)") \
52 _ (CRYPTO_QUEUE_FULL, "crypto queue full (packet dropped)") \
53 _ (NO_BUFFERS, "no buffers (packet dropped)") \
54 _ (NO_PROTECTION, "no protecting SA (packet dropped)") \
55 _ (NO_ENCRYPTION, "no Encrypting SA (packet dropped)")
59 #define _(sym,str) ESP_ENCRYPT_ERROR_##sym,
60 foreach_esp_encrypt_error
63 } esp_encrypt_error_t;
65 static char *esp_encrypt_error_strings[] = {
66 #define _(sym,string) string,
67 foreach_esp_encrypt_error
78 ipsec_crypto_alg_t crypto_alg;
79 ipsec_integ_alg_t integ_alg;
80 } esp_encrypt_trace_t;
85 } esp_encrypt_post_trace_t;
87 /* packet trace format function */
89 format_esp_encrypt_trace (u8 * s, va_list * args)
91 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
92 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
93 esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
97 "esp: sa-index %d spi %u (0x%08x) seq %u sa-seq-hi %u crypto %U integrity %U%s",
98 t->sa_index, t->spi, t->spi, t->seq, t->sa_seq_hi,
99 format_ipsec_crypto_alg,
100 t->crypto_alg, format_ipsec_integ_alg, t->integ_alg,
101 t->udp_encap ? " udp-encap-enabled" : "");
106 format_esp_post_encrypt_trace (u8 * s, va_list * args)
108 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
109 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
110 esp_encrypt_post_trace_t *t = va_arg (*args, esp_encrypt_post_trace_t *);
112 s = format (s, "esp-post: next node index %u", t->next_index);
116 /* pad packet in input buffer */
117 static_always_inline u8 *
118 esp_add_footer_and_icv (vlib_main_t *vm, vlib_buffer_t **last, u8 esp_align,
119 u8 icv_sz, vlib_node_runtime_t *node,
120 u16 buffer_data_size, uword total_len)
122 static const u8 pad_data[ESP_MAX_BLOCK_SIZE] = {
123 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
124 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00,
127 u16 min_length = total_len + sizeof (esp_footer_t);
128 u16 new_length = round_pow2 (min_length, esp_align);
129 u8 pad_bytes = new_length - min_length;
130 esp_footer_t *f = (esp_footer_t *) (vlib_buffer_get_current (last[0]) +
131 last[0]->current_length + pad_bytes);
132 u16 tail_sz = sizeof (esp_footer_t) + pad_bytes + icv_sz;
134 if (last[0]->current_data + last[0]->current_length + tail_sz >
138 if (vlib_buffer_alloc (vm, &tmp_bi, 1) != 1)
141 vlib_buffer_t *tmp = vlib_get_buffer (vm, tmp_bi);
142 last[0]->next_buffer = tmp_bi;
143 last[0]->flags |= VLIB_BUFFER_NEXT_PRESENT;
144 f = (esp_footer_t *) (vlib_buffer_get_current (tmp) + pad_bytes);
145 tmp->current_length += tail_sz;
149 last[0]->current_length += tail_sz;
151 f->pad_length = pad_bytes;
154 ASSERT (pad_bytes <= ESP_MAX_BLOCK_SIZE);
155 pad_bytes = clib_min (ESP_MAX_BLOCK_SIZE, pad_bytes);
156 clib_memcpy_fast ((u8 *) f - pad_bytes, pad_data, pad_bytes);
159 return &f->next_header;
162 static_always_inline void
163 esp_update_ip4_hdr (ip4_header_t * ip4, u16 len, int is_transport, int is_udp)
168 len = clib_net_to_host_u16 (len);
169 old_len = ip4->length;
173 u8 prot = is_udp ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
175 sum = ip_csum_update (ip4->checksum, ip4->protocol,
176 prot, ip4_header_t, protocol);
177 ip4->protocol = prot;
179 sum = ip_csum_update (sum, old_len, len, ip4_header_t, length);
182 sum = ip_csum_update (ip4->checksum, old_len, len, ip4_header_t, length);
185 ip4->checksum = ip_csum_fold (sum);
188 static_always_inline void
189 esp_fill_udp_hdr (ipsec_sa_t * sa, udp_header_t * udp, u16 len)
191 clib_memcpy_fast (udp, &sa->udp_hdr, sizeof (udp_header_t));
192 udp->length = clib_net_to_host_u16 (len);
195 static_always_inline u8
196 ext_hdr_is_pre_esp (u8 nexthdr)
198 #ifdef CLIB_HAVE_VEC128
199 static const u8x16 ext_hdr_types = {
200 IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS,
201 IP_PROTOCOL_IPV6_ROUTE,
202 IP_PROTOCOL_IPV6_FRAGMENTATION,
205 return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr));
207 return ((nexthdr ^ IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
208 (nexthdr ^ IP_PROTOCOL_IPV6_ROUTE) |
209 ((nexthdr ^ IP_PROTOCOL_IPV6_FRAGMENTATION) != 0));
213 static_always_inline u8
214 esp_get_ip6_hdr_len (ip6_header_t * ip6, ip6_ext_header_t ** ext_hdr)
216 /* this code assumes that HbH, route and frag headers will be before
217 others, if that is not the case, they will end up encrypted */
218 u8 len = sizeof (ip6_header_t);
221 /* if next packet doesn't have ext header */
222 if (ext_hdr_is_pre_esp (ip6->protocol) == 0)
228 p = ip6_next_header (ip6);
229 len += ip6_ext_header_len (p);
230 while (ext_hdr_is_pre_esp (p->next_hdr))
232 len += ip6_ext_header_len (p);
233 p = ip6_ext_next_header (p);
240 static_always_inline void
241 esp_process_chained_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
242 vnet_crypto_op_t * ops, vlib_buffer_t * b[],
243 u16 * nexts, vnet_crypto_op_chunk_t * chunks,
246 u32 n_fail, n_ops = vec_len (ops);
247 vnet_crypto_op_t *op = ops;
252 n_fail = n_ops - vnet_crypto_process_chained_ops (vm, op, chunks, n_ops);
256 ASSERT (op - ops < n_ops);
258 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
260 u32 bi = op->user_data;
261 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
262 nexts[bi] = drop_next;
269 static_always_inline void
270 esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
271 vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts,
274 u32 n_fail, n_ops = vec_len (ops);
275 vnet_crypto_op_t *op = ops;
280 n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
284 ASSERT (op - ops < n_ops);
286 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
288 u32 bi = op->user_data;
289 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
290 nexts[bi] = drop_next;
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);
394 op->src = op->dst = payload;
395 op->key_index = sa0->crypto_key_index;
396 op->len = payload_len - icv_sz;
399 if (ipsec_sa_is_set_IS_CTR (sa0))
401 ASSERT (sizeof (u64) == iv_sz);
402 /* construct nonce in a scratch space in front of the IP header */
403 esp_ctr_nonce_t *nonce =
404 (esp_ctr_nonce_t *) (payload - sizeof (u64) - hdr_len -
406 u64 *pkt_iv = (u64 *) (payload - sizeof (u64));
408 if (ipsec_sa_is_set_IS_AEAD (sa0))
410 /* constuct aad in a scratch space in front of the nonce */
411 op->aad = (u8 *) nonce - sizeof (esp_aead_t);
412 op->aad_len = esp_aad_fill (op->aad, esp, sa0, seq_hi);
413 op->tag = payload + op->len;
418 nonce->ctr = clib_host_to_net_u32 (1);
421 nonce->salt = sa0->salt;
422 nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa0->ctr_iv_counter++);
423 op->iv = (u8 *) nonce;
427 op->iv = payload - iv_sz;
428 op->flags = VNET_CRYPTO_OP_FLAG_INIT_IV;
434 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
435 op->chunk_index = vec_len (ptd->chunks);
436 op->tag = vlib_buffer_get_tail (lb) - icv_sz;
437 esp_encrypt_chain_crypto (vm, ptd, sa0, b[0], lb, icv_sz, payload,
438 payload_len, &op->n_chunks);
442 if (sa0->integ_op_id)
444 vnet_crypto_op_t *op;
445 vec_add2_aligned (integ_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
446 vnet_crypto_op_init (op, sa0->integ_op_id);
447 op->src = payload - iv_sz - sizeof (esp_header_t);
448 op->digest = payload + payload_len - icv_sz;
449 op->key_index = sa0->integ_key_index;
450 op->digest_len = icv_sz;
451 op->len = payload_len - icv_sz + iv_sz + sizeof (esp_header_t);
457 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
458 op->chunk_index = vec_len (ptd->chunks);
459 op->digest = vlib_buffer_get_tail (lb) - icv_sz;
461 esp_encrypt_chain_integ (vm, ptd, sa0, b[0], lb, icv_sz,
462 payload - iv_sz - sizeof (esp_header_t),
463 payload_len + iv_sz +
464 sizeof (esp_header_t), op->digest,
467 else if (ipsec_sa_is_set_USE_ESN (sa0))
469 u32 tmp = clib_net_to_host_u32 (seq_hi);
470 clib_memcpy_fast (op->digest, &tmp, sizeof (seq_hi));
471 op->len += sizeof (seq_hi);
476 static_always_inline void
477 esp_prepare_async_frame (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
478 vnet_crypto_async_frame_t *async_frame,
479 ipsec_sa_t *sa, vlib_buffer_t *b, esp_header_t *esp,
480 u8 *payload, u32 payload_len, u8 iv_sz, u8 icv_sz,
481 u32 bi, u16 next, u32 hdr_len, u16 async_next,
484 esp_post_data_t *post = esp_post_data (b);
485 u8 *tag, *iv, *aad = 0;
488 i16 crypto_start_offset, integ_start_offset = 0;
489 u16 crypto_total_len, integ_total_len;
491 post->next_index = next;
494 crypto_start_offset = payload - b->data;
495 crypto_total_len = integ_total_len = payload_len - icv_sz;
496 tag = payload + crypto_total_len;
498 key_index = sa->linked_key_index;
500 if (ipsec_sa_is_set_IS_CTR (sa))
502 ASSERT (sizeof (u64) == iv_sz);
503 /* construct nonce in a scratch space in front of the IP header */
504 esp_ctr_nonce_t *nonce = (esp_ctr_nonce_t *) (payload - sizeof (u64) -
505 hdr_len - sizeof (*nonce));
506 u64 *pkt_iv = (u64 *) (payload - sizeof (u64));
508 if (ipsec_sa_is_set_IS_AEAD (sa))
510 /* constuct aad in a scratch space in front of the nonce */
511 aad = (u8 *) nonce - sizeof (esp_aead_t);
512 esp_aad_fill (aad, esp, sa, sa->seq_hi);
513 key_index = sa->crypto_key_index;
517 nonce->ctr = clib_host_to_net_u32 (1);
520 nonce->salt = sa->salt;
521 nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa->ctr_iv_counter++);
526 iv = payload - iv_sz;
527 flag |= VNET_CRYPTO_OP_FLAG_INIT_IV;
533 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
534 tag = vlib_buffer_get_tail (lb) - icv_sz;
535 crypto_total_len = esp_encrypt_chain_crypto (vm, ptd, sa, b, lb, icv_sz,
536 payload, payload_len, 0);
541 integ_start_offset = crypto_start_offset - iv_sz - sizeof (esp_header_t);
542 integ_total_len += iv_sz + sizeof (esp_header_t);
546 integ_total_len = esp_encrypt_chain_integ (
547 vm, ptd, sa, b, lb, icv_sz,
548 payload - iv_sz - sizeof (esp_header_t),
549 payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
551 else if (ipsec_sa_is_set_USE_ESN (sa))
553 u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
554 clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
555 integ_total_len += sizeof (seq_hi);
559 /* this always succeeds because we know the frame is not full */
560 vnet_crypto_async_add_to_frame (vm, async_frame, key_index, crypto_total_len,
561 integ_total_len - crypto_total_len,
562 crypto_start_offset, integ_start_offset, bi,
563 async_next, iv, tag, aad, flag);
567 esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
568 vlib_frame_t *frame, vnet_link_t lt, int is_tun,
571 ipsec_main_t *im = &ipsec_main;
572 ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
573 u32 *from = vlib_frame_vector_args (frame);
574 u32 n_left = frame->n_vectors;
575 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
576 u32 thread_index = vm->thread_index;
577 u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
578 u32 current_sa_index = ~0, current_sa_packets = 0;
579 u32 current_sa_bytes = 0, spi = 0;
580 u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
583 vnet_crypto_op_t **crypto_ops = &ptd->crypto_ops;
584 vnet_crypto_op_t **integ_ops = &ptd->integ_ops;
585 vnet_crypto_async_frame_t *async_frames[VNET_CRYPTO_ASYNC_OP_N_IDS];
586 int is_async = im->async_mode;
587 vnet_crypto_async_op_id_t async_op = ~0;
589 (lt == VNET_LINK_IP6 ? ESP_ENCRYPT_NEXT_DROP6 :
590 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_DROP4 :
591 ESP_ENCRYPT_NEXT_DROP_MPLS));
592 u16 handoff_next = (lt == VNET_LINK_IP6 ?
593 ESP_ENCRYPT_NEXT_HANDOFF6 :
594 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_HANDOFF4 :
595 ESP_ENCRYPT_NEXT_HANDOFF_MPLS));
596 vlib_buffer_t *sync_bufs[VLIB_FRAME_SIZE];
597 u16 sync_nexts[VLIB_FRAME_SIZE], *sync_next = sync_nexts, n_sync = 0;
598 u16 async_nexts[VLIB_FRAME_SIZE], *async_next = async_nexts, n_async = 0;
599 u16 noop_nexts[VLIB_FRAME_SIZE], *noop_next = noop_nexts, n_noop = 0;
600 u32 sync_bi[VLIB_FRAME_SIZE];
601 u32 noop_bi[VLIB_FRAME_SIZE];
602 esp_encrypt_error_t err;
604 vlib_get_buffers (vm, from, b, n_left);
606 vec_reset_length (ptd->crypto_ops);
607 vec_reset_length (ptd->integ_ops);
608 vec_reset_length (ptd->chained_crypto_ops);
609 vec_reset_length (ptd->chained_integ_ops);
610 vec_reset_length (ptd->async_frames);
611 vec_reset_length (ptd->chunks);
612 clib_memset (async_frames, 0, sizeof (async_frames));
619 u8 *payload, *next_hdr_ptr;
620 u16 payload_len, payload_len_total, n_bufs;
623 err = ESP_ENCRYPT_ERROR_RX_PKTS;
628 vlib_prefetch_buffer_header (b[2], LOAD);
629 p = vlib_buffer_get_current (b[1]);
630 clib_prefetch_load (p);
631 p -= CLIB_CACHE_LINE_BYTES;
632 clib_prefetch_load (p);
633 /* speculate that the trailer goes in the first buffer */
634 CLIB_PREFETCH (vlib_buffer_get_tail (b[1]),
635 CLIB_CACHE_LINE_BYTES, LOAD);
640 /* we are on a ipsec tunnel's feature arc */
641 vnet_buffer (b[0])->ipsec.sad_index =
642 sa_index0 = ipsec_tun_protect_get_sa_out
643 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
645 if (PREDICT_FALSE (INDEX_INVALID == sa_index0))
647 err = ESP_ENCRYPT_ERROR_NO_PROTECTION;
648 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
654 sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
656 if (sa_index0 != current_sa_index)
658 if (current_sa_packets)
659 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
663 current_sa_packets = current_sa_bytes = 0;
665 sa0 = ipsec_sa_get (sa_index0);
667 if (PREDICT_FALSE ((sa0->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
668 sa0->integ_alg == IPSEC_INTEG_ALG_NONE) &&
669 !ipsec_sa_is_set_NO_ALGO_NO_DROP (sa0)))
671 err = ESP_ENCRYPT_ERROR_NO_ENCRYPTION;
672 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
676 /* fetch the second cacheline ASAP */
677 clib_prefetch_load (sa0->cacheline1);
679 current_sa_index = sa_index0;
680 spi = clib_net_to_host_u32 (sa0->spi);
681 esp_align = sa0->esp_block_align;
682 icv_sz = sa0->integ_icv_size;
683 iv_sz = sa0->crypto_iv_size;
684 is_async = im->async_mode | ipsec_sa_is_set_IS_ASYNC (sa0);
687 if (PREDICT_FALSE (~0 == sa0->thread_index))
689 /* this is the first packet to use this SA, claim the SA
690 * for this thread. this could happen simultaneously on
692 clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
693 ipsec_sa_assign_thread (thread_index));
696 if (PREDICT_FALSE (thread_index != sa0->thread_index))
698 vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
699 err = ESP_ENCRYPT_ERROR_HANDOFF;
700 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
706 n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
709 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
710 esp_set_next_index (b[0], node, err, n_noop, noop_nexts, drop_next);
716 /* find last buffer in the chain */
717 while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
718 lb = vlib_get_buffer (vm, lb->next_buffer);
721 if (PREDICT_FALSE (esp_seq_advance (sa0)))
723 err = ESP_ENCRYPT_ERROR_SEQ_CYCLED;
724 esp_set_next_index (b[0], node, err, n_noop, noop_nexts, drop_next);
731 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
733 payload = vlib_buffer_get_current (b[0]);
734 next_hdr_ptr = esp_add_footer_and_icv (
735 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
736 vlib_buffer_length_in_chain (vm, b[0]));
739 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
740 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
744 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
745 payload_len = b[0]->current_length;
746 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
749 hdr_len += sizeof (*esp);
750 esp = (esp_header_t *) (payload - hdr_len);
752 /* optional UDP header */
753 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
755 hdr_len += sizeof (udp_header_t);
756 esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
757 payload_len_total + hdr_len);
761 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
764 u16 len = sizeof (ip6_header_t);
766 ip6 = (ip6_header_t *) (payload - hdr_len);
767 clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
769 if (VNET_LINK_IP6 == lt)
771 *next_hdr_ptr = IP_PROTOCOL_IPV6;
772 tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
773 (const ip6_header_t *) payload,
776 else if (VNET_LINK_IP4 == lt)
778 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
779 tunnel_encap_fixup_4o6 (sa0->tunnel_flags, b[0],
780 (const ip4_header_t *) payload, ip6);
782 else if (VNET_LINK_MPLS == lt)
784 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
785 tunnel_encap_fixup_mplso6 (
786 sa0->tunnel_flags, b[0],
787 (const mpls_unicast_header_t *) payload, ip6);
792 len = payload_len_total + hdr_len - len;
793 ip6->payload_length = clib_net_to_host_u16 (len);
794 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
799 u16 len = sizeof (ip4_header_t);
801 ip4 = (ip4_header_t *) (payload - hdr_len);
802 clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
804 if (VNET_LINK_IP6 == lt)
806 *next_hdr_ptr = IP_PROTOCOL_IPV6;
807 tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
808 (const ip6_header_t *)
811 else if (VNET_LINK_IP4 == lt)
813 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
814 tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
815 (const ip4_header_t *)
818 else if (VNET_LINK_MPLS == lt)
820 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
821 tunnel_encap_fixup_mplso4_w_chksum (
822 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
828 len = payload_len_total + hdr_len;
829 esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
835 sync_next[0] = dpo->dpoi_next_node;
836 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
839 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
840 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
842 else /* transport mode */
844 u8 *l2_hdr, l2_len, *ip_hdr;
846 ip6_ext_header_t *ext_hdr;
847 udp_header_t *udp = 0;
849 u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
852 * Get extension header chain length. It might be longer than the
853 * buffer's pre_data area.
856 (VNET_LINK_IP6 == lt ?
857 esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
858 ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
859 if ((old_ip_hdr - ip_len) < &b[0]->pre_data[0])
861 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
862 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
867 vlib_buffer_advance (b[0], ip_len);
868 payload = vlib_buffer_get_current (b[0]);
869 next_hdr_ptr = esp_add_footer_and_icv (
870 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
871 vlib_buffer_length_in_chain (vm, b[0]));
874 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
875 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
880 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
881 payload_len = b[0]->current_length;
882 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
885 hdr_len += sizeof (*esp);
886 esp = (esp_header_t *) (payload - hdr_len);
888 /* optional UDP header */
889 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
891 hdr_len += sizeof (udp_header_t);
892 udp = (udp_header_t *) (payload - hdr_len);
897 ip_hdr = payload - hdr_len;
902 l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
904 l2_hdr = payload - hdr_len;
906 /* copy l2 and ip header */
907 clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
912 if (VNET_LINK_IP6 == lt)
914 ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
915 if (PREDICT_TRUE (NULL == ext_hdr))
917 *next_hdr_ptr = ip6->protocol;
918 ip6->protocol = IP_PROTOCOL_IPSEC_ESP;
922 *next_hdr_ptr = ext_hdr->next_hdr;
923 ext_hdr->next_hdr = IP_PROTOCOL_IPSEC_ESP;
925 ip6->payload_length =
926 clib_host_to_net_u16 (payload_len_total + hdr_len - l2_len -
927 sizeof (ip6_header_t));
929 else if (VNET_LINK_IP4 == lt)
932 ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
933 *next_hdr_ptr = ip4->protocol;
934 len = payload_len_total + hdr_len - l2_len;
937 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 1);
938 udp_len = len - ip_len;
941 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 0);
944 clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
948 esp_fill_udp_hdr (sa0, udp, udp_len);
951 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
956 crypto_ops = &ptd->chained_crypto_ops;
957 integ_ops = &ptd->chained_integ_ops;
961 crypto_ops = &ptd->crypto_ops;
962 integ_ops = &ptd->integ_ops;
966 esp->seq = clib_net_to_host_u32 (sa0->seq);
970 async_op = sa0->crypto_async_enc_op_id;
972 /* get a frame for this op if we don't yet have one or it's full
974 if (NULL == async_frames[async_op] ||
975 vnet_crypto_async_frame_is_full (async_frames[async_op]))
977 async_frames[async_op] =
978 vnet_crypto_async_get_frame (vm, async_op);
979 /* Save the frame to the list we'll submit at the end */
980 vec_add1 (ptd->async_frames, async_frames[async_op]);
983 esp_prepare_async_frame (vm, ptd, async_frames[async_op], sa0, b[0],
984 esp, payload, payload_len, iv_sz, icv_sz,
985 from[b - bufs], sync_next[0], hdr_len,
986 async_next_node, lb);
989 esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, sa0->seq_hi,
990 payload, payload_len, iv_sz, icv_sz, n_sync, b,
993 vlib_buffer_advance (b[0], 0LL - hdr_len);
995 current_sa_packets += 1;
996 current_sa_bytes += payload_len_total;
999 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1001 esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
1003 if (INDEX_INVALID == sa_index0)
1004 clib_memset_u8 (tr, 0xff, sizeof (*tr));
1007 tr->sa_index = sa_index0;
1011 tr->sa_seq_hi = sa0->seq_hi;
1012 tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
1013 tr->crypto_alg = sa0->crypto_alg;
1014 tr->integ_alg = sa0->integ_alg;
1019 if (ESP_ENCRYPT_ERROR_RX_PKTS != err)
1021 noop_bi[n_noop] = from[b - bufs];
1027 sync_bi[n_sync] = from[b - bufs];
1028 sync_bufs[n_sync] = b[0];
1041 if (INDEX_INVALID != current_sa_index)
1042 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
1043 current_sa_index, current_sa_packets,
1047 esp_process_ops (vm, node, ptd->crypto_ops, sync_bufs, sync_nexts,
1049 esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, sync_bufs,
1050 sync_nexts, ptd->chunks, drop_next);
1052 esp_process_ops (vm, node, ptd->integ_ops, sync_bufs, sync_nexts,
1054 esp_process_chained_ops (vm, node, ptd->chained_integ_ops, sync_bufs,
1055 sync_nexts, ptd->chunks, drop_next);
1057 vlib_buffer_enqueue_to_next (vm, node, sync_bi, sync_nexts, n_sync);
1061 /* submit all of the open frames */
1062 vnet_crypto_async_frame_t **async_frame;
1064 vec_foreach (async_frame, ptd->async_frames)
1066 if (vnet_crypto_async_submit_open_frame (vm, *async_frame) < 0)
1068 n_noop += esp_async_recycle_failed_submit (
1069 vm, *async_frame, node, ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
1070 n_noop, noop_bi, noop_nexts, drop_next);
1071 vnet_crypto_async_reset_frame (*async_frame);
1072 vnet_crypto_async_free_frame (vm, *async_frame);
1077 vlib_buffer_enqueue_to_next (vm, node, noop_bi, noop_nexts, n_noop);
1079 vlib_node_increment_counter (vm, node->node_index, ESP_ENCRYPT_ERROR_RX_PKTS,
1082 return frame->n_vectors;
1086 esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1087 vlib_frame_t * frame)
1089 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1090 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
1091 u32 *from = vlib_frame_vector_args (frame);
1092 u32 n_left = frame->n_vectors;
1094 vlib_get_buffers (vm, from, b, n_left);
1098 vlib_prefetch_buffer_header (b[0], LOAD);
1099 vlib_prefetch_buffer_header (b[1], LOAD);
1100 vlib_prefetch_buffer_header (b[2], LOAD);
1101 vlib_prefetch_buffer_header (b[3], LOAD);
1106 vlib_prefetch_buffer_header (b[4], LOAD);
1107 vlib_prefetch_buffer_header (b[5], LOAD);
1108 vlib_prefetch_buffer_header (b[6], LOAD);
1109 vlib_prefetch_buffer_header (b[7], LOAD);
1111 next[0] = (esp_post_data (b[0]))->next_index;
1112 next[1] = (esp_post_data (b[1]))->next_index;
1113 next[2] = (esp_post_data (b[2]))->next_index;
1114 next[3] = (esp_post_data (b[3]))->next_index;
1116 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1118 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
1120 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1122 tr->next_index = next[0];
1124 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
1126 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
1128 tr->next_index = next[1];
1130 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
1132 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
1134 tr->next_index = next[2];
1136 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
1138 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
1140 tr->next_index = next[3];
1151 next[0] = (esp_post_data (b[0]))->next_index;
1152 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1154 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1156 tr->next_index = next[0];
1164 vlib_node_increment_counter (vm, node->node_index,
1165 ESP_ENCRYPT_ERROR_POST_RX_PKTS,
1167 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1168 return frame->n_vectors;
1171 VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
1172 vlib_node_runtime_t * node,
1173 vlib_frame_t * from_frame)
1175 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
1176 esp_encrypt_async_next.esp4_post_next);
1180 VLIB_REGISTER_NODE (esp4_encrypt_node) = {
1181 .name = "esp4-encrypt",
1182 .vector_size = sizeof (u32),
1183 .format_trace = format_esp_encrypt_trace,
1184 .type = VLIB_NODE_TYPE_INTERNAL,
1186 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1187 .error_strings = esp_encrypt_error_strings,
1189 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1190 .next_nodes = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1191 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1192 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1193 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
1194 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
1195 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
1196 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output" },
1200 VLIB_NODE_FN (esp4_encrypt_post_node) (vlib_main_t * vm,
1201 vlib_node_runtime_t * node,
1202 vlib_frame_t * from_frame)
1204 return esp_encrypt_post_inline (vm, node, from_frame);
1208 VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
1209 .name = "esp4-encrypt-post",
1210 .vector_size = sizeof (u32),
1211 .format_trace = format_esp_post_encrypt_trace,
1212 .type = VLIB_NODE_TYPE_INTERNAL,
1213 .sibling_of = "esp4-encrypt",
1215 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1216 .error_strings = esp_encrypt_error_strings,
1220 VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
1221 vlib_node_runtime_t * node,
1222 vlib_frame_t * from_frame)
1224 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
1225 esp_encrypt_async_next.esp6_post_next);
1229 VLIB_REGISTER_NODE (esp6_encrypt_node) = {
1230 .name = "esp6-encrypt",
1231 .vector_size = sizeof (u32),
1232 .format_trace = format_esp_encrypt_trace,
1233 .type = VLIB_NODE_TYPE_INTERNAL,
1234 .sibling_of = "esp4-encrypt",
1236 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1237 .error_strings = esp_encrypt_error_strings,
1241 VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
1242 vlib_node_runtime_t * node,
1243 vlib_frame_t * from_frame)
1245 return esp_encrypt_post_inline (vm, node, from_frame);
1249 VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
1250 .name = "esp6-encrypt-post",
1251 .vector_size = sizeof (u32),
1252 .format_trace = format_esp_post_encrypt_trace,
1253 .type = VLIB_NODE_TYPE_INTERNAL,
1254 .sibling_of = "esp4-encrypt",
1256 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1257 .error_strings = esp_encrypt_error_strings,
1261 VLIB_NODE_FN (esp4_encrypt_tun_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_IP4, 1,
1266 esp_encrypt_async_next.esp4_tun_post_next);
1270 VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
1271 .name = "esp4-encrypt-tun",
1272 .vector_size = sizeof (u32),
1273 .format_trace = format_esp_encrypt_trace,
1274 .type = VLIB_NODE_TYPE_INTERNAL,
1276 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1277 .error_strings = esp_encrypt_error_strings,
1279 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1281 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1282 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1283 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1284 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1285 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1286 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1287 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1291 VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
1292 vlib_node_runtime_t * node,
1293 vlib_frame_t * from_frame)
1295 return esp_encrypt_post_inline (vm, node, from_frame);
1299 VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
1300 .name = "esp4-encrypt-tun-post",
1301 .vector_size = sizeof (u32),
1302 .format_trace = format_esp_post_encrypt_trace,
1303 .type = VLIB_NODE_TYPE_INTERNAL,
1304 .sibling_of = "esp4-encrypt-tun",
1306 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1307 .error_strings = esp_encrypt_error_strings,
1311 VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
1312 vlib_node_runtime_t * node,
1313 vlib_frame_t * from_frame)
1315 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
1316 esp_encrypt_async_next.esp6_tun_post_next);
1320 VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
1321 .name = "esp6-encrypt-tun",
1322 .vector_size = sizeof (u32),
1323 .format_trace = format_esp_encrypt_trace,
1324 .type = VLIB_NODE_TYPE_INTERNAL,
1326 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1327 .error_strings = esp_encrypt_error_strings,
1329 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1331 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1332 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1333 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1334 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1335 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1336 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1337 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1343 VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
1344 vlib_node_runtime_t * node,
1345 vlib_frame_t * from_frame)
1347 return esp_encrypt_post_inline (vm, node, from_frame);
1351 VLIB_REGISTER_NODE (esp6_encrypt_tun_post_node) = {
1352 .name = "esp6-encrypt-tun-post",
1353 .vector_size = sizeof (u32),
1354 .format_trace = format_esp_post_encrypt_trace,
1355 .type = VLIB_NODE_TYPE_INTERNAL,
1356 .sibling_of = "esp-mpls-encrypt-tun",
1358 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1359 .error_strings = esp_encrypt_error_strings,
1363 VLIB_NODE_FN (esp_mpls_encrypt_tun_node)
1364 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1366 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_MPLS, 1,
1367 esp_encrypt_async_next.esp_mpls_tun_post_next);
1370 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
1371 .name = "esp-mpls-encrypt-tun",
1372 .vector_size = sizeof (u32),
1373 .format_trace = format_esp_encrypt_trace,
1374 .type = VLIB_NODE_TYPE_INTERNAL,
1376 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1377 .error_strings = esp_encrypt_error_strings,
1379 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1381 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1382 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1383 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1384 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1385 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1386 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1387 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1391 VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
1392 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1394 return esp_encrypt_post_inline (vm, node, from_frame);
1397 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
1398 .name = "esp-mpls-encrypt-tun-post",
1399 .vector_size = sizeof (u32),
1400 .format_trace = format_esp_post_encrypt_trace,
1401 .type = VLIB_NODE_TYPE_INTERNAL,
1402 .sibling_of = "esp-mpls-encrypt-tun",
1404 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1405 .error_strings = esp_encrypt_error_strings,
1408 #ifndef CLIB_MARCH_VARIANT
1410 static clib_error_t *
1411 esp_encrypt_init (vlib_main_t *vm)
1413 ipsec_main_t *im = &ipsec_main;
1415 im->esp4_enc_fq_index =
1416 vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
1417 im->esp6_enc_fq_index =
1418 vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
1419 im->esp4_enc_tun_fq_index =
1420 vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
1421 im->esp6_enc_tun_fq_index =
1422 vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
1423 im->esp_mpls_enc_tun_fq_index =
1424 vlib_frame_queue_main_init (esp_mpls_encrypt_tun_node.index, 0);
1429 VLIB_INIT_FUNCTION (esp_encrypt_init);
1434 * fd.io coding-style-patch-verification: ON
1437 * eval: (c-set-style "gnu")