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 _(SEQ_CYCLED, "sequence number cycled (packet dropped)") \
50 _(CRYPTO_ENGINE_ERROR, "crypto engine error (packet dropped)") \
51 _(CRYPTO_QUEUE_FULL, "crypto queue full (packet dropped)") \
52 _(NO_BUFFERS, "no buffers (packet dropped)") \
56 #define _(sym,str) ESP_ENCRYPT_ERROR_##sym,
57 foreach_esp_encrypt_error
60 } esp_encrypt_error_t;
62 static char *esp_encrypt_error_strings[] = {
63 #define _(sym,string) string,
64 foreach_esp_encrypt_error
75 ipsec_crypto_alg_t crypto_alg;
76 ipsec_integ_alg_t integ_alg;
77 } esp_encrypt_trace_t;
82 } esp_encrypt_post_trace_t;
84 /* packet trace format function */
86 format_esp_encrypt_trace (u8 * s, va_list * args)
88 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
89 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
90 esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
94 "esp: sa-index %d spi %u (0x%08x) seq %u sa-seq-hi %u crypto %U integrity %U%s",
95 t->sa_index, t->spi, t->spi, t->seq, t->sa_seq_hi,
96 format_ipsec_crypto_alg,
97 t->crypto_alg, format_ipsec_integ_alg, t->integ_alg,
98 t->udp_encap ? " udp-encap-enabled" : "");
103 format_esp_post_encrypt_trace (u8 * s, va_list * args)
105 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
106 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
107 esp_encrypt_post_trace_t *t = va_arg (*args, esp_encrypt_post_trace_t *);
109 s = format (s, "esp-post: next node index %u", t->next_index);
113 /* pad packet in input buffer */
114 static_always_inline u8 *
115 esp_add_footer_and_icv (vlib_main_t * vm, vlib_buffer_t ** last,
116 u8 esp_align, u8 icv_sz,
117 u16 * next, vlib_node_runtime_t * node,
118 u16 buffer_data_size, uword total_len)
120 static const u8 pad_data[ESP_MAX_BLOCK_SIZE] = {
121 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
122 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00,
125 u16 min_length = total_len + sizeof (esp_footer_t);
126 u16 new_length = round_pow2 (min_length, esp_align);
127 u8 pad_bytes = new_length - min_length;
128 esp_footer_t *f = (esp_footer_t *) (vlib_buffer_get_current (last[0]) +
129 last[0]->current_length + pad_bytes);
130 u16 tail_sz = sizeof (esp_footer_t) + pad_bytes + icv_sz;
132 if (last[0]->current_length + tail_sz > buffer_data_size)
135 if (vlib_buffer_alloc (vm, &tmp_bi, 1) != 1)
138 vlib_buffer_t *tmp = vlib_get_buffer (vm, tmp_bi);
139 last[0]->next_buffer = tmp_bi;
140 last[0]->flags |= VLIB_BUFFER_NEXT_PRESENT;
141 f = (esp_footer_t *) (vlib_buffer_get_current (tmp) + pad_bytes);
142 tmp->current_length += tail_sz;
146 last[0]->current_length += tail_sz;
148 f->pad_length = pad_bytes;
151 ASSERT (pad_bytes <= ESP_MAX_BLOCK_SIZE);
152 pad_bytes = clib_min (ESP_MAX_BLOCK_SIZE, pad_bytes);
153 clib_memcpy_fast ((u8 *) f - pad_bytes, pad_data, pad_bytes);
156 return &f->next_header;
159 static_always_inline void
160 esp_update_ip4_hdr (ip4_header_t * ip4, u16 len, int is_transport, int is_udp)
165 len = clib_net_to_host_u16 (len);
166 old_len = ip4->length;
170 u8 prot = is_udp ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
172 sum = ip_csum_update (ip4->checksum, ip4->protocol,
173 prot, ip4_header_t, protocol);
174 ip4->protocol = prot;
176 sum = ip_csum_update (sum, old_len, len, ip4_header_t, length);
179 sum = ip_csum_update (ip4->checksum, old_len, len, ip4_header_t, length);
182 ip4->checksum = ip_csum_fold (sum);
185 static_always_inline void
186 esp_fill_udp_hdr (ipsec_sa_t * sa, udp_header_t * udp, u16 len)
188 clib_memcpy_fast (udp, &sa->udp_hdr, sizeof (udp_header_t));
189 udp->length = clib_net_to_host_u16 (len);
192 static_always_inline u8
193 ext_hdr_is_pre_esp (u8 nexthdr)
195 #ifdef CLIB_HAVE_VEC128
196 static const u8x16 ext_hdr_types = {
197 IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS,
198 IP_PROTOCOL_IPV6_ROUTE,
199 IP_PROTOCOL_IPV6_FRAGMENTATION,
202 return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr));
204 return ((nexthdr ^ IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
205 (nexthdr ^ IP_PROTOCOL_IPV6_ROUTE) |
206 (nexthdr ^ IP_PROTOCOL_IPV6_FRAGMENTATION) != 0);
210 static_always_inline u8
211 esp_get_ip6_hdr_len (ip6_header_t * ip6, ip6_ext_header_t ** ext_hdr)
213 /* this code assumes that HbH, route and frag headers will be before
214 others, if that is not the case, they will end up encrypted */
215 u8 len = sizeof (ip6_header_t);
218 /* if next packet doesn't have ext header */
219 if (ext_hdr_is_pre_esp (ip6->protocol) == 0)
225 p = (void *) (ip6 + 1);
226 len += ip6_ext_header_len (p);
228 while (ext_hdr_is_pre_esp (p->next_hdr))
230 len += ip6_ext_header_len (p);
231 p = ip6_ext_next_header (p);
238 static_always_inline void
239 esp_process_chained_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
240 vnet_crypto_op_t * ops, vlib_buffer_t * b[],
241 u16 * nexts, vnet_crypto_op_chunk_t * chunks,
244 u32 n_fail, n_ops = vec_len (ops);
245 vnet_crypto_op_t *op = ops;
250 n_fail = n_ops - vnet_crypto_process_chained_ops (vm, op, chunks, n_ops);
254 ASSERT (op - ops < n_ops);
256 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
258 u32 bi = op->user_data;
259 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
260 nexts[bi] = drop_next;
267 static_always_inline void
268 esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
269 vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts,
272 u32 n_fail, n_ops = vec_len (ops);
273 vnet_crypto_op_t *op = ops;
278 n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
282 ASSERT (op - ops < n_ops);
284 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
286 u32 bi = op->user_data;
287 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
288 nexts[bi] = drop_next;
299 } __clib_packed esp_gcm_nonce_t;
301 STATIC_ASSERT_SIZEOF (esp_gcm_nonce_t, 12);
303 static_always_inline u32
304 esp_encrypt_chain_crypto (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
305 ipsec_sa_t * sa0, vlib_buffer_t * b,
306 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
307 u32 start_len, u16 * n_ch)
309 vnet_crypto_op_chunk_t *ch;
310 vlib_buffer_t *cb = b;
313 vec_add2 (ptd->chunks, ch, 1);
314 total_len = ch->len = start_len;
315 ch->src = ch->dst = start;
316 cb = vlib_get_buffer (vm, cb->next_buffer);
320 vec_add2 (ptd->chunks, ch, 1);
323 total_len += ch->len = cb->current_length - icv_sz;
325 total_len += ch->len = cb->current_length;
326 ch->src = ch->dst = vlib_buffer_get_current (cb);
328 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
331 cb = vlib_get_buffer (vm, cb->next_buffer);
340 static_always_inline u32
341 esp_encrypt_chain_integ (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
342 ipsec_sa_t * sa0, vlib_buffer_t * b,
343 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
344 u32 start_len, u8 * digest, u16 * n_ch)
346 vnet_crypto_op_chunk_t *ch;
347 vlib_buffer_t *cb = b;
350 vec_add2 (ptd->chunks, ch, 1);
351 total_len = ch->len = start_len;
353 cb = vlib_get_buffer (vm, cb->next_buffer);
357 vec_add2 (ptd->chunks, ch, 1);
361 total_len += ch->len = cb->current_length - icv_sz;
362 if (ipsec_sa_is_set_USE_ESN (sa0))
364 u32 seq_hi = clib_net_to_host_u32 (sa0->seq_hi);
365 clib_memcpy_fast (digest, &seq_hi, sizeof (seq_hi));
366 ch->len += sizeof (seq_hi);
367 total_len += sizeof (seq_hi);
371 total_len += ch->len = cb->current_length;
372 ch->src = vlib_buffer_get_current (cb);
374 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
377 cb = vlib_get_buffer (vm, cb->next_buffer);
387 esp_prepare_sync_op (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
388 vnet_crypto_op_t ** crypto_ops,
389 vnet_crypto_op_t ** integ_ops, ipsec_sa_t * sa0,
390 u8 * payload, u16 payload_len, u8 iv_sz, u8 icv_sz,
391 vlib_buffer_t ** bufs, vlib_buffer_t ** b,
392 vlib_buffer_t * lb, u32 hdr_len, esp_header_t * esp,
393 esp_gcm_nonce_t * nonce)
395 if (sa0->crypto_enc_op_id)
397 vnet_crypto_op_t *op;
398 vec_add2_aligned (crypto_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
399 vnet_crypto_op_init (op, sa0->crypto_enc_op_id);
401 op->src = op->dst = payload;
402 op->key_index = sa0->crypto_key_index;
403 op->len = payload_len - icv_sz;
404 op->user_data = b - bufs;
406 if (ipsec_sa_is_set_IS_AEAD (sa0))
409 * construct the AAD in a scratch space in front
412 op->aad = payload - hdr_len - sizeof (esp_aead_t);
413 op->aad_len = esp_aad_fill (op->aad, esp, sa0);
415 op->tag = payload + op->len;
418 u64 *iv = (u64 *) (payload - iv_sz);
419 nonce->salt = sa0->salt;
420 nonce->iv = *iv = clib_host_to_net_u64 (sa0->gcm_iv_counter++);
421 op->iv = (u8 *) nonce;
425 op->iv = payload - iv_sz;
426 op->flags = VNET_CRYPTO_OP_FLAG_INIT_IV;
432 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
433 op->chunk_index = vec_len (ptd->chunks);
434 op->tag = vlib_buffer_get_tail (lb) - icv_sz;
435 esp_encrypt_chain_crypto (vm, ptd, sa0, b[0], lb, icv_sz, payload,
436 payload_len, &op->n_chunks);
440 if (sa0->integ_op_id)
442 vnet_crypto_op_t *op;
443 vec_add2_aligned (integ_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
444 vnet_crypto_op_init (op, sa0->integ_op_id);
445 op->src = payload - iv_sz - sizeof (esp_header_t);
446 op->digest = payload + payload_len - icv_sz;
447 op->key_index = sa0->integ_key_index;
448 op->digest_len = icv_sz;
449 op->len = payload_len - icv_sz + iv_sz + sizeof (esp_header_t);
450 op->user_data = b - bufs;
455 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
456 op->chunk_index = vec_len (ptd->chunks);
457 op->digest = vlib_buffer_get_tail (lb) - icv_sz;
459 esp_encrypt_chain_integ (vm, ptd, sa0, b[0], lb, icv_sz,
460 payload - iv_sz - sizeof (esp_header_t),
461 payload_len + iv_sz +
462 sizeof (esp_header_t), op->digest,
465 else if (ipsec_sa_is_set_USE_ESN (sa0))
467 u32 seq_hi = clib_net_to_host_u32 (sa0->seq_hi);
468 clib_memcpy_fast (op->digest, &seq_hi, sizeof (seq_hi));
469 op->len += sizeof (seq_hi);
474 static_always_inline int
475 esp_prepare_async_frame (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
476 vnet_crypto_async_frame_t ** async_frame,
477 ipsec_sa_t * sa, vlib_buffer_t * b,
478 esp_header_t * esp, u8 * payload, u32 payload_len,
479 u8 iv_sz, u8 icv_sz, u32 bi, u16 next, u32 hdr_len,
480 u16 async_next, vlib_buffer_t * lb)
482 esp_post_data_t *post = esp_post_data (b);
483 u8 *tag, *iv, *aad = 0;
486 i16 crypto_start_offset, integ_start_offset = 0;
487 u16 crypto_total_len, integ_total_len;
489 post->next_index = next;
492 crypto_start_offset = payload - b->data;
493 crypto_total_len = integ_total_len = payload_len - icv_sz;
494 tag = payload + crypto_total_len;
497 if (ipsec_sa_is_set_IS_AEAD (sa))
499 esp_gcm_nonce_t *nonce;
500 u64 *pkt_iv = (u64 *) (payload - iv_sz);
502 aad = payload - hdr_len - sizeof (esp_aead_t);
503 esp_aad_fill (aad, esp, sa);
504 nonce = (esp_gcm_nonce_t *) (aad - sizeof (*nonce));
505 nonce->salt = sa->salt;
506 nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa->gcm_iv_counter++);
508 key_index = sa->crypto_key_index;
513 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
514 tag = vlib_buffer_get_tail (lb) - icv_sz;
515 crypto_total_len = esp_encrypt_chain_crypto (vm, ptd, sa, b, lb,
522 /* cipher then hash */
523 iv = payload - iv_sz;
524 integ_start_offset = crypto_start_offset - iv_sz - sizeof (esp_header_t);
525 integ_total_len += iv_sz + sizeof (esp_header_t);
526 flag |= VNET_CRYPTO_OP_FLAG_INIT_IV;
527 key_index = sa->linked_key_index;
531 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
532 crypto_total_len = esp_encrypt_chain_crypto (vm, ptd, sa, b, lb,
535 tag = vlib_buffer_get_tail (lb) - icv_sz;
536 integ_total_len = esp_encrypt_chain_integ (vm, ptd, sa, b, lb, icv_sz,
538 sizeof (esp_header_t),
539 payload_len + iv_sz +
540 sizeof (esp_header_t),
543 else if (ipsec_sa_is_set_USE_ESN (sa) && !ipsec_sa_is_set_IS_AEAD (sa))
545 u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
546 clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
547 integ_total_len += sizeof (seq_hi);
551 return vnet_crypto_async_add_to_frame (vm, async_frame, key_index,
553 integ_total_len - crypto_total_len,
555 integ_start_offset, bi, async_next,
560 esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
561 vlib_frame_t *frame, vnet_link_t lt, int is_tun,
564 ipsec_main_t *im = &ipsec_main;
565 ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
566 u32 *from = vlib_frame_vector_args (frame);
567 u32 n_left = frame->n_vectors;
568 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
569 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
570 esp_gcm_nonce_t nonces[VLIB_FRAME_SIZE], *nonce = nonces;
571 u32 thread_index = vm->thread_index;
572 u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
573 u32 current_sa_index = ~0, current_sa_packets = 0;
574 u32 current_sa_bytes = 0, spi = 0;
575 u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
578 vnet_crypto_op_t **crypto_ops = &ptd->crypto_ops;
579 vnet_crypto_op_t **integ_ops = &ptd->integ_ops;
580 vnet_crypto_async_frame_t *async_frame = 0;
581 int is_async = im->async_mode;
582 vnet_crypto_async_op_id_t last_async_op = ~0;
584 (lt == VNET_LINK_IP6 ? ESP_ENCRYPT_NEXT_DROP6 :
585 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_DROP4 :
586 ESP_ENCRYPT_NEXT_DROP_MPLS));
587 u16 handoff_next = (lt == VNET_LINK_IP6 ?
588 ESP_ENCRYPT_NEXT_HANDOFF6 :
589 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_HANDOFF4 :
590 ESP_ENCRYPT_NEXT_HANDOFF_MPLS));
591 u16 n_async_drop = 0;
593 vlib_get_buffers (vm, from, b, n_left);
596 vec_reset_length (ptd->crypto_ops);
597 vec_reset_length (ptd->integ_ops);
598 vec_reset_length (ptd->chained_crypto_ops);
599 vec_reset_length (ptd->chained_integ_ops);
601 vec_reset_length (ptd->chunks);
608 u8 *payload, *next_hdr_ptr;
609 u16 payload_len, payload_len_total, n_bufs;
615 vlib_prefetch_buffer_header (b[2], LOAD);
616 p = vlib_buffer_get_current (b[1]);
617 CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
618 p -= CLIB_CACHE_LINE_BYTES;
619 CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
620 /* speculate that the trailer goes in the first buffer */
621 CLIB_PREFETCH (vlib_buffer_get_tail (b[1]),
622 CLIB_CACHE_LINE_BYTES, LOAD);
627 /* we are on a ipsec tunnel's feature arc */
628 vnet_buffer (b[0])->ipsec.sad_index =
629 sa_index0 = ipsec_tun_protect_get_sa_out
630 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
633 sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
635 if (sa_index0 != current_sa_index)
637 if (current_sa_packets)
638 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
642 current_sa_packets = current_sa_bytes = 0;
644 sa0 = pool_elt_at_index (im->sad, sa_index0);
646 /* fetch the second cacheline ASAP */
647 CLIB_PREFETCH (sa0->cacheline1, CLIB_CACHE_LINE_BYTES, LOAD);
649 current_sa_index = sa_index0;
650 spi = clib_net_to_host_u32 (sa0->spi);
651 esp_align = sa0->esp_block_align;
652 icv_sz = sa0->integ_icv_size;
653 iv_sz = sa0->crypto_iv_size;
655 /* submit frame when op_id is different then the old one */
656 if (is_async && sa0->crypto_async_enc_op_id != last_async_op)
658 if (async_frame && async_frame->n_elts)
660 if (vnet_crypto_async_submit_open_frame (vm, async_frame))
661 esp_async_recycle_failed_submit (async_frame, b, from,
662 nexts, &n_async_drop,
664 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR);
667 vnet_crypto_async_get_frame (vm, sa0->crypto_async_enc_op_id);
668 last_async_op = sa0->crypto_async_enc_op_id;
672 if (PREDICT_FALSE (~0 == sa0->thread_index))
674 /* this is the first packet to use this SA, claim the SA
675 * for this thread. this could happen simultaneously on
677 clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
678 ipsec_sa_assign_thread (thread_index));
681 if (PREDICT_FALSE (thread_index != sa0->thread_index))
683 esp_set_next_index (is_async, from, nexts, from[b - bufs],
684 &n_async_drop, handoff_next, next);
689 n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
692 b[0]->error = node->errors[ESP_ENCRYPT_ERROR_NO_BUFFERS];
693 esp_set_next_index (is_async, from, nexts, from[b - bufs],
694 &n_async_drop, drop_next, next);
700 /* find last buffer in the chain */
701 while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
702 lb = vlib_get_buffer (vm, lb->next_buffer);
705 if (PREDICT_FALSE (esp_seq_advance (sa0)))
707 b[0]->error = node->errors[ESP_ENCRYPT_ERROR_SEQ_CYCLED];
708 esp_set_next_index (is_async, from, nexts, from[b - bufs],
709 &n_async_drop, drop_next, next);
716 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
718 payload = vlib_buffer_get_current (b[0]);
719 next_hdr_ptr = esp_add_footer_and_icv (vm, &lb, esp_align, icv_sz,
722 vlib_buffer_length_in_chain
726 b[0]->error = node->errors[ESP_ENCRYPT_ERROR_NO_BUFFERS];
727 esp_set_next_index (is_async, from, nexts, from[b - bufs],
728 &n_async_drop, drop_next, next);
731 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
732 payload_len = b[0]->current_length;
733 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
736 hdr_len += sizeof (*esp);
737 esp = (esp_header_t *) (payload - hdr_len);
739 /* optional UDP header */
740 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
742 hdr_len += sizeof (udp_header_t);
743 esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
744 payload_len_total + hdr_len);
748 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
751 u16 len = sizeof (ip6_header_t);
753 ip6 = (ip6_header_t *) (payload - hdr_len);
754 clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
756 if (VNET_LINK_IP6 == lt)
758 *next_hdr_ptr = IP_PROTOCOL_IPV6;
759 tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
760 (const ip6_header_t *) payload,
763 else if (VNET_LINK_IP4 == lt)
765 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
766 tunnel_encap_fixup_4o6 (sa0->tunnel_flags,
767 (const ip4_header_t *) payload,
770 else if (VNET_LINK_MPLS == lt)
772 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
773 tunnel_encap_fixup_mplso6 (
774 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
780 len = payload_len_total + hdr_len - len;
781 ip6->payload_length = clib_net_to_host_u16 (len);
782 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
787 u16 len = sizeof (ip4_header_t);
789 ip4 = (ip4_header_t *) (payload - hdr_len);
790 clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
792 if (VNET_LINK_IP6 == lt)
794 *next_hdr_ptr = IP_PROTOCOL_IPV6;
795 tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
796 (const ip6_header_t *)
799 else if (VNET_LINK_IP4 == lt)
801 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
802 tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
803 (const ip4_header_t *)
806 else if (VNET_LINK_MPLS == lt)
808 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
809 tunnel_encap_fixup_mplso4_w_chksum (
810 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
816 len = payload_len_total + hdr_len;
817 esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
823 next[0] = dpo->dpoi_next_node;
824 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
827 next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
829 else /* transport mode */
831 u8 *l2_hdr, l2_len, *ip_hdr, ip_len;
832 ip6_ext_header_t *ext_hdr;
833 udp_header_t *udp = 0;
835 u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
838 (VNET_LINK_IP6 == lt ?
839 esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
840 ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
842 vlib_buffer_advance (b[0], ip_len);
843 payload = vlib_buffer_get_current (b[0]);
844 next_hdr_ptr = esp_add_footer_and_icv (vm, &lb, esp_align, icv_sz,
847 vlib_buffer_length_in_chain
851 esp_set_next_index (is_async, from, nexts, from[b - bufs],
852 &n_async_drop, drop_next, next);
856 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
857 payload_len = b[0]->current_length;
858 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
861 hdr_len += sizeof (*esp);
862 esp = (esp_header_t *) (payload - hdr_len);
864 /* optional UDP header */
865 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
867 hdr_len += sizeof (udp_header_t);
868 udp = (udp_header_t *) (payload - hdr_len);
873 ip_hdr = payload - hdr_len;
878 l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
880 l2_hdr = payload - hdr_len;
882 /* copy l2 and ip header */
883 clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
888 if (VNET_LINK_IP6 == lt)
890 ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
891 if (PREDICT_TRUE (NULL == ext_hdr))
893 *next_hdr_ptr = ip6->protocol;
894 ip6->protocol = IP_PROTOCOL_IPSEC_ESP;
898 *next_hdr_ptr = ext_hdr->next_hdr;
899 ext_hdr->next_hdr = IP_PROTOCOL_IPSEC_ESP;
901 ip6->payload_length =
902 clib_host_to_net_u16 (payload_len_total + hdr_len - l2_len -
903 sizeof (ip6_header_t));
905 else if (VNET_LINK_IP4 == lt)
908 ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
909 *next_hdr_ptr = ip4->protocol;
910 len = payload_len_total + hdr_len - l2_len;
913 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 1);
914 udp_len = len - ip_len;
917 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 0);
920 clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
924 esp_fill_udp_hdr (sa0, udp, udp_len);
927 next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
932 crypto_ops = &ptd->chained_crypto_ops;
933 integ_ops = &ptd->chained_integ_ops;
937 crypto_ops = &ptd->crypto_ops;
938 integ_ops = &ptd->integ_ops;
942 esp->seq = clib_net_to_host_u32 (sa0->seq);
946 if (PREDICT_FALSE (sa0->crypto_async_enc_op_id == 0))
948 esp_set_next_index (is_async, from, nexts, from[b - bufs],
949 &n_async_drop, drop_next, next);
953 if (esp_prepare_async_frame (vm, ptd, &async_frame, sa0, b[0], esp,
954 payload, payload_len, iv_sz,
955 icv_sz, from[b - bufs], next[0],
956 hdr_len, async_next, lb))
958 /* The fail only caused by submission, free the whole frame. */
959 if (async_frame->n_elts)
960 esp_async_recycle_failed_submit (async_frame, b, from, nexts,
961 &n_async_drop, drop_next,
962 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR);
963 b[0]->error = ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR;
964 esp_set_next_index (1, from, nexts, from[b - bufs],
965 &n_async_drop, drop_next, next);
971 esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, payload,
972 payload_len, iv_sz, icv_sz, bufs, b, lb,
973 hdr_len, esp, nonce++);
976 vlib_buffer_advance (b[0], 0LL - hdr_len);
978 current_sa_packets += 1;
979 current_sa_bytes += payload_len_total;
982 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
984 esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
986 tr->sa_index = sa_index0;
989 tr->sa_seq_hi = sa0->seq_hi;
990 tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
991 tr->crypto_alg = sa0->crypto_alg;
992 tr->integ_alg = sa0->integ_alg;
1000 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
1001 current_sa_index, current_sa_packets,
1005 esp_process_ops (vm, node, ptd->crypto_ops, bufs, nexts, drop_next);
1006 esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, bufs, nexts,
1007 ptd->chunks, drop_next);
1009 esp_process_ops (vm, node, ptd->integ_ops, bufs, nexts, drop_next);
1010 esp_process_chained_ops (vm, node, ptd->chained_integ_ops, bufs, nexts,
1011 ptd->chunks, drop_next);
1015 if (async_frame && async_frame->n_elts)
1017 if (vnet_crypto_async_submit_open_frame (vm, async_frame) < 0)
1018 esp_async_recycle_failed_submit (async_frame, b, from, nexts,
1019 &n_async_drop, drop_next,
1020 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR);
1022 vlib_node_increment_counter (vm, node->node_index,
1023 ESP_ENCRYPT_ERROR_RX_PKTS,
1026 vlib_buffer_enqueue_to_next (vm, node, from, nexts, n_async_drop);
1028 return frame->n_vectors;
1031 vlib_node_increment_counter (vm, node->node_index,
1032 ESP_ENCRYPT_ERROR_RX_PKTS, frame->n_vectors);
1034 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1035 return frame->n_vectors;
1039 esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1040 vlib_frame_t * frame)
1042 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1043 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
1044 u32 *from = vlib_frame_vector_args (frame);
1045 u32 n_left = frame->n_vectors;
1047 vlib_get_buffers (vm, from, b, n_left);
1051 vlib_prefetch_buffer_header (b[0], LOAD);
1052 vlib_prefetch_buffer_header (b[1], LOAD);
1053 vlib_prefetch_buffer_header (b[2], LOAD);
1054 vlib_prefetch_buffer_header (b[3], LOAD);
1059 vlib_prefetch_buffer_header (b[4], LOAD);
1060 vlib_prefetch_buffer_header (b[5], LOAD);
1061 vlib_prefetch_buffer_header (b[6], LOAD);
1062 vlib_prefetch_buffer_header (b[7], LOAD);
1064 next[0] = (esp_post_data (b[0]))->next_index;
1065 next[1] = (esp_post_data (b[1]))->next_index;
1066 next[2] = (esp_post_data (b[2]))->next_index;
1067 next[3] = (esp_post_data (b[3]))->next_index;
1069 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1071 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
1073 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1075 tr->next_index = next[0];
1077 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
1079 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
1081 tr->next_index = next[1];
1083 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
1085 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
1087 tr->next_index = next[2];
1089 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
1091 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
1093 tr->next_index = next[3];
1104 next[0] = (esp_post_data (b[0]))->next_index;
1105 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1107 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1109 tr->next_index = next[0];
1117 vlib_node_increment_counter (vm, node->node_index,
1118 ESP_ENCRYPT_ERROR_POST_RX_PKTS,
1120 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1121 return frame->n_vectors;
1124 VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
1125 vlib_node_runtime_t * node,
1126 vlib_frame_t * from_frame)
1128 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
1129 esp_encrypt_async_next.esp4_post_next);
1133 VLIB_REGISTER_NODE (esp4_encrypt_node) = {
1134 .name = "esp4-encrypt",
1135 .vector_size = sizeof (u32),
1136 .format_trace = format_esp_encrypt_trace,
1137 .type = VLIB_NODE_TYPE_INTERNAL,
1139 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1140 .error_strings = esp_encrypt_error_strings,
1142 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1143 .next_nodes = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1144 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1145 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1146 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
1147 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
1148 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
1149 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output" },
1153 VLIB_NODE_FN (esp4_encrypt_post_node) (vlib_main_t * vm,
1154 vlib_node_runtime_t * node,
1155 vlib_frame_t * from_frame)
1157 return esp_encrypt_post_inline (vm, node, from_frame);
1161 VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
1162 .name = "esp4-encrypt-post",
1163 .vector_size = sizeof (u32),
1164 .format_trace = format_esp_post_encrypt_trace,
1165 .type = VLIB_NODE_TYPE_INTERNAL,
1166 .sibling_of = "esp4-encrypt",
1168 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1169 .error_strings = esp_encrypt_error_strings,
1173 VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
1174 vlib_node_runtime_t * node,
1175 vlib_frame_t * from_frame)
1177 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
1178 esp_encrypt_async_next.esp6_post_next);
1182 VLIB_REGISTER_NODE (esp6_encrypt_node) = {
1183 .name = "esp6-encrypt",
1184 .vector_size = sizeof (u32),
1185 .format_trace = format_esp_encrypt_trace,
1186 .type = VLIB_NODE_TYPE_INTERNAL,
1187 .sibling_of = "esp4-encrypt",
1189 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1190 .error_strings = esp_encrypt_error_strings,
1194 VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
1195 vlib_node_runtime_t * node,
1196 vlib_frame_t * from_frame)
1198 return esp_encrypt_post_inline (vm, node, from_frame);
1202 VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
1203 .name = "esp6-encrypt-post",
1204 .vector_size = sizeof (u32),
1205 .format_trace = format_esp_post_encrypt_trace,
1206 .type = VLIB_NODE_TYPE_INTERNAL,
1207 .sibling_of = "esp4-encrypt",
1209 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1210 .error_strings = esp_encrypt_error_strings,
1214 VLIB_NODE_FN (esp4_encrypt_tun_node) (vlib_main_t * vm,
1215 vlib_node_runtime_t * node,
1216 vlib_frame_t * from_frame)
1218 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 1,
1219 esp_encrypt_async_next.esp4_tun_post_next);
1223 VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
1224 .name = "esp4-encrypt-tun",
1225 .vector_size = sizeof (u32),
1226 .format_trace = format_esp_encrypt_trace,
1227 .type = VLIB_NODE_TYPE_INTERNAL,
1229 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1230 .error_strings = esp_encrypt_error_strings,
1232 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1234 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1235 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1236 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1237 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1238 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1239 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1240 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1244 VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
1245 vlib_node_runtime_t * node,
1246 vlib_frame_t * from_frame)
1248 return esp_encrypt_post_inline (vm, node, from_frame);
1252 VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
1253 .name = "esp4-encrypt-tun-post",
1254 .vector_size = sizeof (u32),
1255 .format_trace = format_esp_post_encrypt_trace,
1256 .type = VLIB_NODE_TYPE_INTERNAL,
1257 .sibling_of = "esp4-encrypt-tun",
1259 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1260 .error_strings = esp_encrypt_error_strings,
1264 VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
1265 vlib_node_runtime_t * node,
1266 vlib_frame_t * from_frame)
1268 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
1269 esp_encrypt_async_next.esp6_tun_post_next);
1273 VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
1274 .name = "esp6-encrypt-tun",
1275 .vector_size = sizeof (u32),
1276 .format_trace = format_esp_encrypt_trace,
1277 .type = VLIB_NODE_TYPE_INTERNAL,
1279 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1280 .error_strings = esp_encrypt_error_strings,
1282 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1284 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1285 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1286 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1287 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1288 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1289 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1290 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1296 VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
1297 vlib_node_runtime_t * node,
1298 vlib_frame_t * from_frame)
1300 return esp_encrypt_post_inline (vm, node, from_frame);
1304 VLIB_REGISTER_NODE (esp6_encrypt_tun_post_node) = {
1305 .name = "esp6-encrypt-tun-post",
1306 .vector_size = sizeof (u32),
1307 .format_trace = format_esp_post_encrypt_trace,
1308 .type = VLIB_NODE_TYPE_INTERNAL,
1309 .sibling_of = "esp-mpls-encrypt-tun",
1311 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1312 .error_strings = esp_encrypt_error_strings,
1316 VLIB_NODE_FN (esp_mpls_encrypt_tun_node)
1317 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1319 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_MPLS, 1,
1320 esp_encrypt_async_next.esp_mpls_tun_post_next);
1323 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
1324 .name = "esp-mpls-encrypt-tun",
1325 .vector_size = sizeof (u32),
1326 .format_trace = format_esp_encrypt_trace,
1327 .type = VLIB_NODE_TYPE_INTERNAL,
1329 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1330 .error_strings = esp_encrypt_error_strings,
1332 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1334 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1335 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1336 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1337 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1338 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1339 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1340 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1344 VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
1345 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1347 return esp_encrypt_post_inline (vm, node, from_frame);
1350 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
1351 .name = "esp-mpls-encrypt-tun-post",
1352 .vector_size = sizeof (u32),
1353 .format_trace = format_esp_post_encrypt_trace,
1354 .type = VLIB_NODE_TYPE_INTERNAL,
1355 .sibling_of = "esp-mpls-encrypt-tun",
1357 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1358 .error_strings = esp_encrypt_error_strings,
1364 } esp_no_crypto_trace_t;
1367 format_esp_no_crypto_trace (u8 * s, va_list * args)
1369 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1370 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1371 esp_no_crypto_trace_t *t = va_arg (*args, esp_no_crypto_trace_t *);
1373 s = format (s, "esp-no-crypto: sa-index %u", t->sa_index);
1380 ESP_NO_CRYPTO_NEXT_DROP,
1381 ESP_NO_CRYPTO_N_NEXT,
1386 ESP_NO_CRYPTO_ERROR_RX_PKTS,
1389 static char *esp_no_crypto_error_strings[] = {
1390 "Outbound ESP packets received",
1394 esp_no_crypto_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1395 vlib_frame_t * frame)
1397 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1398 u32 *from = vlib_frame_vector_args (frame);
1399 u32 n_left = frame->n_vectors;
1401 vlib_get_buffers (vm, from, b, n_left);
1407 /* packets are always going to be dropped, but get the sa_index */
1408 sa_index0 = ipsec_tun_protect_get_sa_out
1409 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
1411 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1413 esp_no_crypto_trace_t *tr = vlib_add_trace (vm, node, b[0],
1415 tr->sa_index = sa_index0;
1422 vlib_node_increment_counter (vm, node->node_index,
1423 ESP_NO_CRYPTO_ERROR_RX_PKTS, frame->n_vectors);
1425 vlib_buffer_enqueue_to_single_next (vm, node, from,
1426 ESP_NO_CRYPTO_NEXT_DROP,
1429 return frame->n_vectors;
1432 VLIB_NODE_FN (esp4_no_crypto_tun_node) (vlib_main_t * vm,
1433 vlib_node_runtime_t * node,
1434 vlib_frame_t * from_frame)
1436 return esp_no_crypto_inline (vm, node, from_frame);
1440 VLIB_REGISTER_NODE (esp4_no_crypto_tun_node) =
1442 .name = "esp4-no-crypto",
1443 .vector_size = sizeof (u32),
1444 .format_trace = format_esp_no_crypto_trace,
1445 .n_errors = ARRAY_LEN(esp_no_crypto_error_strings),
1446 .error_strings = esp_no_crypto_error_strings,
1447 .n_next_nodes = ESP_NO_CRYPTO_N_NEXT,
1449 [ESP_NO_CRYPTO_NEXT_DROP] = "ip4-drop",
1453 VLIB_NODE_FN (esp6_no_crypto_tun_node) (vlib_main_t * vm,
1454 vlib_node_runtime_t * node,
1455 vlib_frame_t * from_frame)
1457 return esp_no_crypto_inline (vm, node, from_frame);
1461 VLIB_REGISTER_NODE (esp6_no_crypto_tun_node) =
1463 .name = "esp6-no-crypto",
1464 .vector_size = sizeof (u32),
1465 .format_trace = format_esp_no_crypto_trace,
1466 .n_errors = ARRAY_LEN(esp_no_crypto_error_strings),
1467 .error_strings = esp_no_crypto_error_strings,
1468 .n_next_nodes = ESP_NO_CRYPTO_N_NEXT,
1470 [ESP_NO_CRYPTO_NEXT_DROP] = "ip6-drop",
1476 * fd.io coding-style-patch-verification: ON
1479 * eval: (c-set-style "gnu")