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)")
57 #define _(sym,str) ESP_ENCRYPT_ERROR_##sym,
58 foreach_esp_encrypt_error
61 } esp_encrypt_error_t;
63 static char *esp_encrypt_error_strings[] = {
64 #define _(sym,string) string,
65 foreach_esp_encrypt_error
76 ipsec_crypto_alg_t crypto_alg;
77 ipsec_integ_alg_t integ_alg;
78 } esp_encrypt_trace_t;
83 } esp_encrypt_post_trace_t;
85 /* packet trace format function */
87 format_esp_encrypt_trace (u8 * s, va_list * args)
89 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
90 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
91 esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
95 "esp: sa-index %d spi %u (0x%08x) seq %u sa-seq-hi %u crypto %U integrity %U%s",
96 t->sa_index, t->spi, t->spi, t->seq, t->sa_seq_hi,
97 format_ipsec_crypto_alg,
98 t->crypto_alg, format_ipsec_integ_alg, t->integ_alg,
99 t->udp_encap ? " udp-encap-enabled" : "");
104 format_esp_post_encrypt_trace (u8 * s, va_list * args)
106 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
107 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
108 esp_encrypt_post_trace_t *t = va_arg (*args, esp_encrypt_post_trace_t *);
110 s = format (s, "esp-post: next node index %u", t->next_index);
114 /* pad packet in input buffer */
115 static_always_inline u8 *
116 esp_add_footer_and_icv (vlib_main_t *vm, vlib_buffer_t **last, u8 esp_align,
117 u8 icv_sz, 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_data + last[0]->current_length + tail_sz >
136 if (vlib_buffer_alloc (vm, &tmp_bi, 1) != 1)
139 vlib_buffer_t *tmp = vlib_get_buffer (vm, tmp_bi);
140 last[0]->next_buffer = tmp_bi;
141 last[0]->flags |= VLIB_BUFFER_NEXT_PRESENT;
142 f = (esp_footer_t *) (vlib_buffer_get_current (tmp) + pad_bytes);
143 tmp->current_length += tail_sz;
147 last[0]->current_length += tail_sz;
149 f->pad_length = pad_bytes;
152 ASSERT (pad_bytes <= ESP_MAX_BLOCK_SIZE);
153 pad_bytes = clib_min (ESP_MAX_BLOCK_SIZE, pad_bytes);
154 clib_memcpy_fast ((u8 *) f - pad_bytes, pad_data, pad_bytes);
157 return &f->next_header;
160 static_always_inline void
161 esp_update_ip4_hdr (ip4_header_t * ip4, u16 len, int is_transport, int is_udp)
166 len = clib_net_to_host_u16 (len);
167 old_len = ip4->length;
171 u8 prot = is_udp ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
173 sum = ip_csum_update (ip4->checksum, ip4->protocol,
174 prot, ip4_header_t, protocol);
175 ip4->protocol = prot;
177 sum = ip_csum_update (sum, old_len, len, ip4_header_t, length);
180 sum = ip_csum_update (ip4->checksum, old_len, len, ip4_header_t, length);
183 ip4->checksum = ip_csum_fold (sum);
186 static_always_inline void
187 esp_fill_udp_hdr (ipsec_sa_t * sa, udp_header_t * udp, u16 len)
189 clib_memcpy_fast (udp, &sa->udp_hdr, sizeof (udp_header_t));
190 udp->length = clib_net_to_host_u16 (len);
193 static_always_inline u8
194 ext_hdr_is_pre_esp (u8 nexthdr)
196 #ifdef CLIB_HAVE_VEC128
197 static const u8x16 ext_hdr_types = {
198 IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS,
199 IP_PROTOCOL_IPV6_ROUTE,
200 IP_PROTOCOL_IPV6_FRAGMENTATION,
203 return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr));
205 return ((nexthdr ^ IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
206 (nexthdr ^ IP_PROTOCOL_IPV6_ROUTE) |
207 (nexthdr ^ IP_PROTOCOL_IPV6_FRAGMENTATION) != 0);
211 static_always_inline u8
212 esp_get_ip6_hdr_len (ip6_header_t * ip6, ip6_ext_header_t ** ext_hdr)
214 /* this code assumes that HbH, route and frag headers will be before
215 others, if that is not the case, they will end up encrypted */
216 u8 len = sizeof (ip6_header_t);
219 /* if next packet doesn't have ext header */
220 if (ext_hdr_is_pre_esp (ip6->protocol) == 0)
226 p = (void *) (ip6 + 1);
227 len += ip6_ext_header_len (p);
229 while (ext_hdr_is_pre_esp (p->next_hdr))
231 len += ip6_ext_header_len (p);
232 p = ip6_ext_next_header (p);
239 static_always_inline void
240 esp_process_chained_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
241 vnet_crypto_op_t * ops, vlib_buffer_t * b[],
242 u16 * nexts, vnet_crypto_op_chunk_t * chunks,
245 u32 n_fail, n_ops = vec_len (ops);
246 vnet_crypto_op_t *op = ops;
251 n_fail = n_ops - vnet_crypto_process_chained_ops (vm, op, chunks, n_ops);
255 ASSERT (op - ops < n_ops);
257 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
259 u32 bi = op->user_data;
260 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
261 nexts[bi] = drop_next;
268 static_always_inline void
269 esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
270 vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts,
273 u32 n_fail, n_ops = vec_len (ops);
274 vnet_crypto_op_t *op = ops;
279 n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
283 ASSERT (op - ops < n_ops);
285 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
287 u32 bi = op->user_data;
288 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
289 nexts[bi] = drop_next;
296 static_always_inline u32
297 esp_encrypt_chain_crypto (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
298 ipsec_sa_t * sa0, vlib_buffer_t * b,
299 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
300 u32 start_len, u16 * n_ch)
302 vnet_crypto_op_chunk_t *ch;
303 vlib_buffer_t *cb = b;
306 vec_add2 (ptd->chunks, ch, 1);
307 total_len = ch->len = start_len;
308 ch->src = ch->dst = start;
309 cb = vlib_get_buffer (vm, cb->next_buffer);
313 vec_add2 (ptd->chunks, ch, 1);
316 total_len += ch->len = cb->current_length - icv_sz;
318 total_len += ch->len = cb->current_length;
319 ch->src = ch->dst = vlib_buffer_get_current (cb);
321 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
324 cb = vlib_get_buffer (vm, cb->next_buffer);
333 static_always_inline u32
334 esp_encrypt_chain_integ (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
335 ipsec_sa_t * sa0, vlib_buffer_t * b,
336 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
337 u32 start_len, u8 * digest, u16 * n_ch)
339 vnet_crypto_op_chunk_t *ch;
340 vlib_buffer_t *cb = b;
343 vec_add2 (ptd->chunks, ch, 1);
344 total_len = ch->len = start_len;
346 cb = vlib_get_buffer (vm, cb->next_buffer);
350 vec_add2 (ptd->chunks, ch, 1);
354 total_len += ch->len = cb->current_length - icv_sz;
355 if (ipsec_sa_is_set_USE_ESN (sa0))
357 u32 seq_hi = clib_net_to_host_u32 (sa0->seq_hi);
358 clib_memcpy_fast (digest, &seq_hi, sizeof (seq_hi));
359 ch->len += sizeof (seq_hi);
360 total_len += sizeof (seq_hi);
364 total_len += ch->len = cb->current_length;
365 ch->src = vlib_buffer_get_current (cb);
367 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
370 cb = vlib_get_buffer (vm, cb->next_buffer);
380 esp_prepare_sync_op (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
381 vnet_crypto_op_t **crypto_ops,
382 vnet_crypto_op_t **integ_ops, ipsec_sa_t *sa0, u32 seq_hi,
383 u8 *payload, u16 payload_len, u8 iv_sz, u8 icv_sz, u32 bi,
384 vlib_buffer_t **b, vlib_buffer_t *lb, u32 hdr_len,
387 if (sa0->crypto_enc_op_id)
389 vnet_crypto_op_t *op;
390 vec_add2_aligned (crypto_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
391 vnet_crypto_op_init (op, sa0->crypto_enc_op_id);
393 op->src = op->dst = payload;
394 op->key_index = sa0->crypto_key_index;
395 op->len = payload_len - icv_sz;
398 if (ipsec_sa_is_set_IS_CTR (sa0))
400 ASSERT (sizeof (u64) == iv_sz);
401 /* construct nonce in a scratch space in front of the IP header */
402 esp_ctr_nonce_t *nonce =
403 (esp_ctr_nonce_t *) (payload - sizeof (u64) - hdr_len -
405 u64 *pkt_iv = (u64 *) (payload - sizeof (u64));
407 if (ipsec_sa_is_set_IS_AEAD (sa0))
409 /* constuct aad in a scratch space in front of the nonce */
410 op->aad = (u8 *) nonce - sizeof (esp_aead_t);
411 op->aad_len = esp_aad_fill (op->aad, esp, sa0, seq_hi);
412 op->tag = payload + op->len;
417 nonce->ctr = clib_host_to_net_u32 (1);
420 nonce->salt = sa0->salt;
421 nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa0->ctr_iv_counter++);
422 op->iv = (u8 *) nonce;
426 op->iv = payload - iv_sz;
427 op->flags = VNET_CRYPTO_OP_FLAG_INIT_IV;
433 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
434 op->chunk_index = vec_len (ptd->chunks);
435 op->tag = vlib_buffer_get_tail (lb) - icv_sz;
436 esp_encrypt_chain_crypto (vm, ptd, sa0, b[0], lb, icv_sz, payload,
437 payload_len, &op->n_chunks);
441 if (sa0->integ_op_id)
443 vnet_crypto_op_t *op;
444 vec_add2_aligned (integ_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
445 vnet_crypto_op_init (op, sa0->integ_op_id);
446 op->src = payload - iv_sz - sizeof (esp_header_t);
447 op->digest = payload + payload_len - icv_sz;
448 op->key_index = sa0->integ_key_index;
449 op->digest_len = icv_sz;
450 op->len = payload_len - icv_sz + iv_sz + sizeof (esp_header_t);
456 op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
457 op->chunk_index = vec_len (ptd->chunks);
458 op->digest = vlib_buffer_get_tail (lb) - icv_sz;
460 esp_encrypt_chain_integ (vm, ptd, sa0, b[0], lb, icv_sz,
461 payload - iv_sz - sizeof (esp_header_t),
462 payload_len + iv_sz +
463 sizeof (esp_header_t), op->digest,
466 else if (ipsec_sa_is_set_USE_ESN (sa0))
468 u32 tmp = clib_net_to_host_u32 (seq_hi);
469 clib_memcpy_fast (op->digest, &tmp, sizeof (seq_hi));
470 op->len += sizeof (seq_hi);
475 static_always_inline void
476 esp_prepare_async_frame (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
477 vnet_crypto_async_frame_t *async_frame,
478 ipsec_sa_t *sa, vlib_buffer_t *b, esp_header_t *esp,
479 u8 *payload, u32 payload_len, u8 iv_sz, u8 icv_sz,
480 u32 bi, u16 next, u32 hdr_len, u16 async_next,
483 esp_post_data_t *post = esp_post_data (b);
484 u8 *tag, *iv, *aad = 0;
487 i16 crypto_start_offset, integ_start_offset = 0;
488 u16 crypto_total_len, integ_total_len;
490 post->next_index = next;
493 crypto_start_offset = payload - b->data;
494 crypto_total_len = integ_total_len = payload_len - icv_sz;
495 tag = payload + crypto_total_len;
497 key_index = sa->linked_key_index;
499 if (ipsec_sa_is_set_IS_CTR (sa))
501 ASSERT (sizeof (u64) == iv_sz);
502 /* construct nonce in a scratch space in front of the IP header */
503 esp_ctr_nonce_t *nonce = (esp_ctr_nonce_t *) (payload - sizeof (u64) -
504 hdr_len - sizeof (*nonce));
505 u64 *pkt_iv = (u64 *) (payload - sizeof (u64));
507 if (ipsec_sa_is_set_IS_AEAD (sa))
509 /* constuct aad in a scratch space in front of the nonce */
510 aad = (u8 *) nonce - sizeof (esp_aead_t);
511 esp_aad_fill (aad, esp, sa, sa->seq_hi);
512 key_index = sa->crypto_key_index;
516 nonce->ctr = clib_host_to_net_u32 (1);
519 nonce->salt = sa->salt;
520 nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa->ctr_iv_counter++);
525 iv = payload - iv_sz;
526 flag |= VNET_CRYPTO_OP_FLAG_INIT_IV;
532 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
533 tag = vlib_buffer_get_tail (lb) - icv_sz;
534 crypto_total_len = esp_encrypt_chain_crypto (vm, ptd, sa, b, lb, icv_sz,
535 payload, payload_len, 0);
540 integ_start_offset = crypto_start_offset - iv_sz - sizeof (esp_header_t);
541 integ_total_len += iv_sz + sizeof (esp_header_t);
545 integ_total_len = esp_encrypt_chain_integ (
546 vm, ptd, sa, b, lb, icv_sz,
547 payload - iv_sz - sizeof (esp_header_t),
548 payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
550 else if (ipsec_sa_is_set_USE_ESN (sa))
552 u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
553 clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
554 integ_total_len += sizeof (seq_hi);
558 /* this always succeeds because we know the frame is not full */
559 vnet_crypto_async_add_to_frame (vm, async_frame, key_index, crypto_total_len,
560 integ_total_len - crypto_total_len,
561 crypto_start_offset, integ_start_offset, bi,
562 async_next, iv, tag, aad, flag);
566 esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
567 vlib_frame_t *frame, vnet_link_t lt, int is_tun,
570 ipsec_main_t *im = &ipsec_main;
571 ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
572 u32 *from = vlib_frame_vector_args (frame);
573 u32 n_left = frame->n_vectors;
574 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
575 u32 thread_index = vm->thread_index;
576 u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
577 u32 current_sa_index = ~0, current_sa_packets = 0;
578 u32 current_sa_bytes = 0, spi = 0;
579 u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
582 vnet_crypto_op_t **crypto_ops = &ptd->crypto_ops;
583 vnet_crypto_op_t **integ_ops = &ptd->integ_ops;
584 vnet_crypto_async_frame_t *async_frames[VNET_CRYPTO_ASYNC_OP_N_IDS];
585 int is_async = im->async_mode;
586 vnet_crypto_async_op_id_t async_op = ~0;
588 (lt == VNET_LINK_IP6 ? ESP_ENCRYPT_NEXT_DROP6 :
589 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_DROP4 :
590 ESP_ENCRYPT_NEXT_DROP_MPLS));
591 u16 handoff_next = (lt == VNET_LINK_IP6 ?
592 ESP_ENCRYPT_NEXT_HANDOFF6 :
593 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_HANDOFF4 :
594 ESP_ENCRYPT_NEXT_HANDOFF_MPLS));
595 vlib_buffer_t *sync_bufs[VLIB_FRAME_SIZE];
596 u16 sync_nexts[VLIB_FRAME_SIZE], *sync_next = sync_nexts, n_sync = 0;
597 u16 async_nexts[VLIB_FRAME_SIZE], *async_next = async_nexts, n_async = 0;
598 u16 noop_nexts[VLIB_FRAME_SIZE], *noop_next = noop_nexts, n_noop = 0;
599 u32 sync_bi[VLIB_FRAME_SIZE];
600 u32 noop_bi[VLIB_FRAME_SIZE];
601 esp_encrypt_error_t err;
603 vlib_get_buffers (vm, from, b, n_left);
605 vec_reset_length (ptd->crypto_ops);
606 vec_reset_length (ptd->integ_ops);
607 vec_reset_length (ptd->chained_crypto_ops);
608 vec_reset_length (ptd->chained_integ_ops);
609 vec_reset_length (ptd->async_frames);
610 vec_reset_length (ptd->chunks);
611 clib_memset (async_frames, 0, sizeof (async_frames));
618 u8 *payload, *next_hdr_ptr;
619 u16 payload_len, payload_len_total, n_bufs;
622 err = ESP_ENCRYPT_ERROR_RX_PKTS;
627 vlib_prefetch_buffer_header (b[2], LOAD);
628 p = vlib_buffer_get_current (b[1]);
629 CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
630 p -= CLIB_CACHE_LINE_BYTES;
631 CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
632 /* speculate that the trailer goes in the first buffer */
633 CLIB_PREFETCH (vlib_buffer_get_tail (b[1]),
634 CLIB_CACHE_LINE_BYTES, LOAD);
639 /* we are on a ipsec tunnel's feature arc */
640 vnet_buffer (b[0])->ipsec.sad_index =
641 sa_index0 = ipsec_tun_protect_get_sa_out
642 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
645 sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
647 if (sa_index0 != current_sa_index)
649 if (current_sa_packets)
650 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
654 current_sa_packets = current_sa_bytes = 0;
656 sa0 = ipsec_sa_get (sa_index0);
658 /* fetch the second cacheline ASAP */
659 CLIB_PREFETCH (sa0->cacheline1, CLIB_CACHE_LINE_BYTES, LOAD);
661 current_sa_index = sa_index0;
662 spi = clib_net_to_host_u32 (sa0->spi);
663 esp_align = sa0->esp_block_align;
664 icv_sz = sa0->integ_icv_size;
665 iv_sz = sa0->crypto_iv_size;
666 is_async = im->async_mode | ipsec_sa_is_set_IS_ASYNC (sa0);
669 if (PREDICT_FALSE (~0 == sa0->thread_index))
671 /* this is the first packet to use this SA, claim the SA
672 * for this thread. this could happen simultaneously on
674 clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
675 ipsec_sa_assign_thread (thread_index));
678 if (PREDICT_FALSE (thread_index != sa0->thread_index))
680 vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
681 err = ESP_ENCRYPT_ERROR_HANDOFF;
682 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
688 n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
691 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
692 esp_set_next_index (b[0], node, err, n_noop, noop_nexts, drop_next);
698 /* find last buffer in the chain */
699 while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
700 lb = vlib_get_buffer (vm, lb->next_buffer);
703 if (PREDICT_FALSE (esp_seq_advance (sa0)))
705 err = ESP_ENCRYPT_ERROR_SEQ_CYCLED;
706 esp_set_next_index (b[0], node, err, n_noop, noop_nexts, drop_next);
713 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
715 payload = vlib_buffer_get_current (b[0]);
716 next_hdr_ptr = esp_add_footer_and_icv (
717 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
718 vlib_buffer_length_in_chain (vm, b[0]));
721 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
722 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
726 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
727 payload_len = b[0]->current_length;
728 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
731 hdr_len += sizeof (*esp);
732 esp = (esp_header_t *) (payload - hdr_len);
734 /* optional UDP header */
735 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
737 hdr_len += sizeof (udp_header_t);
738 esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
739 payload_len_total + hdr_len);
743 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
746 u16 len = sizeof (ip6_header_t);
748 ip6 = (ip6_header_t *) (payload - hdr_len);
749 clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
751 if (VNET_LINK_IP6 == lt)
753 *next_hdr_ptr = IP_PROTOCOL_IPV6;
754 tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
755 (const ip6_header_t *) payload,
758 else if (VNET_LINK_IP4 == lt)
760 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
761 tunnel_encap_fixup_4o6 (sa0->tunnel_flags, b[0],
762 (const ip4_header_t *) payload, ip6);
764 else if (VNET_LINK_MPLS == lt)
766 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
767 tunnel_encap_fixup_mplso6 (
768 sa0->tunnel_flags, b[0],
769 (const mpls_unicast_header_t *) payload, ip6);
774 len = payload_len_total + hdr_len - len;
775 ip6->payload_length = clib_net_to_host_u16 (len);
776 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
781 u16 len = sizeof (ip4_header_t);
783 ip4 = (ip4_header_t *) (payload - hdr_len);
784 clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
786 if (VNET_LINK_IP6 == lt)
788 *next_hdr_ptr = IP_PROTOCOL_IPV6;
789 tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
790 (const ip6_header_t *)
793 else if (VNET_LINK_IP4 == lt)
795 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
796 tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
797 (const ip4_header_t *)
800 else if (VNET_LINK_MPLS == lt)
802 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
803 tunnel_encap_fixup_mplso4_w_chksum (
804 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
810 len = payload_len_total + hdr_len;
811 esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
817 sync_next[0] = dpo->dpoi_next_node;
818 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
821 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
822 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
824 else /* transport mode */
826 u8 *l2_hdr, l2_len, *ip_hdr, ip_len;
827 ip6_ext_header_t *ext_hdr;
828 udp_header_t *udp = 0;
830 u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
833 (VNET_LINK_IP6 == lt ?
834 esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
835 ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
837 vlib_buffer_advance (b[0], ip_len);
838 payload = vlib_buffer_get_current (b[0]);
839 next_hdr_ptr = esp_add_footer_and_icv (
840 vm, &lb, esp_align, icv_sz, node, buffer_data_size,
841 vlib_buffer_length_in_chain (vm, b[0]));
844 err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
845 esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
850 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
851 payload_len = b[0]->current_length;
852 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
855 hdr_len += sizeof (*esp);
856 esp = (esp_header_t *) (payload - hdr_len);
858 /* optional UDP header */
859 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
861 hdr_len += sizeof (udp_header_t);
862 udp = (udp_header_t *) (payload - hdr_len);
867 ip_hdr = payload - hdr_len;
872 l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
874 l2_hdr = payload - hdr_len;
876 /* copy l2 and ip header */
877 clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
882 if (VNET_LINK_IP6 == lt)
884 ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
885 if (PREDICT_TRUE (NULL == ext_hdr))
887 *next_hdr_ptr = ip6->protocol;
888 ip6->protocol = IP_PROTOCOL_IPSEC_ESP;
892 *next_hdr_ptr = ext_hdr->next_hdr;
893 ext_hdr->next_hdr = IP_PROTOCOL_IPSEC_ESP;
895 ip6->payload_length =
896 clib_host_to_net_u16 (payload_len_total + hdr_len - l2_len -
897 sizeof (ip6_header_t));
899 else if (VNET_LINK_IP4 == lt)
902 ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
903 *next_hdr_ptr = ip4->protocol;
904 len = payload_len_total + hdr_len - l2_len;
907 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 1);
908 udp_len = len - ip_len;
911 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 0);
914 clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
918 esp_fill_udp_hdr (sa0, udp, udp_len);
921 sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
926 crypto_ops = &ptd->chained_crypto_ops;
927 integ_ops = &ptd->chained_integ_ops;
931 crypto_ops = &ptd->crypto_ops;
932 integ_ops = &ptd->integ_ops;
936 esp->seq = clib_net_to_host_u32 (sa0->seq);
940 async_op = sa0->crypto_async_enc_op_id;
942 /* get a frame for this op if we don't yet have one or it's full
944 if (NULL == async_frames[async_op] ||
945 vnet_crypto_async_frame_is_full (async_frames[async_op]))
947 async_frames[async_op] =
948 vnet_crypto_async_get_frame (vm, async_op);
949 /* Save the frame to the list we'll submit at the end */
950 vec_add1 (ptd->async_frames, async_frames[async_op]);
953 esp_prepare_async_frame (vm, ptd, async_frames[async_op], sa0, b[0],
954 esp, payload, payload_len, iv_sz, icv_sz,
955 from[b - bufs], sync_next[0], hdr_len,
956 async_next_node, lb);
959 esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, sa0->seq_hi,
960 payload, payload_len, iv_sz, icv_sz, n_sync, b,
963 vlib_buffer_advance (b[0], 0LL - hdr_len);
965 current_sa_packets += 1;
966 current_sa_bytes += payload_len_total;
969 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
971 esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
973 tr->sa_index = sa_index0;
976 tr->sa_seq_hi = sa0->seq_hi;
977 tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
978 tr->crypto_alg = sa0->crypto_alg;
979 tr->integ_alg = sa0->integ_alg;
983 if (ESP_ENCRYPT_ERROR_RX_PKTS != err)
985 noop_bi[n_noop] = from[b - bufs];
991 sync_bi[n_sync] = from[b - bufs];
992 sync_bufs[n_sync] = b[0];
1005 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
1006 current_sa_index, current_sa_packets,
1010 esp_process_ops (vm, node, ptd->crypto_ops, sync_bufs, sync_nexts,
1012 esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, sync_bufs,
1013 sync_nexts, ptd->chunks, drop_next);
1015 esp_process_ops (vm, node, ptd->integ_ops, sync_bufs, sync_nexts,
1017 esp_process_chained_ops (vm, node, ptd->chained_integ_ops, sync_bufs,
1018 sync_nexts, ptd->chunks, drop_next);
1020 vlib_buffer_enqueue_to_next (vm, node, sync_bi, sync_nexts, n_sync);
1024 /* submit all of the open frames */
1025 vnet_crypto_async_frame_t **async_frame;
1027 vec_foreach (async_frame, ptd->async_frames)
1029 if (vnet_crypto_async_submit_open_frame (vm, *async_frame) < 0)
1031 n_noop += esp_async_recycle_failed_submit (
1032 vm, *async_frame, node, ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
1033 n_sync, noop_bi, noop_nexts, drop_next);
1034 vnet_crypto_async_reset_frame (*async_frame);
1035 vnet_crypto_async_free_frame (vm, *async_frame);
1040 vlib_buffer_enqueue_to_next (vm, node, noop_bi, noop_nexts, n_noop);
1042 vlib_node_increment_counter (vm, node->node_index, ESP_ENCRYPT_ERROR_RX_PKTS,
1045 return frame->n_vectors;
1049 esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1050 vlib_frame_t * frame)
1052 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1053 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
1054 u32 *from = vlib_frame_vector_args (frame);
1055 u32 n_left = frame->n_vectors;
1057 vlib_get_buffers (vm, from, b, n_left);
1061 vlib_prefetch_buffer_header (b[0], LOAD);
1062 vlib_prefetch_buffer_header (b[1], LOAD);
1063 vlib_prefetch_buffer_header (b[2], LOAD);
1064 vlib_prefetch_buffer_header (b[3], LOAD);
1069 vlib_prefetch_buffer_header (b[4], LOAD);
1070 vlib_prefetch_buffer_header (b[5], LOAD);
1071 vlib_prefetch_buffer_header (b[6], LOAD);
1072 vlib_prefetch_buffer_header (b[7], LOAD);
1074 next[0] = (esp_post_data (b[0]))->next_index;
1075 next[1] = (esp_post_data (b[1]))->next_index;
1076 next[2] = (esp_post_data (b[2]))->next_index;
1077 next[3] = (esp_post_data (b[3]))->next_index;
1079 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1081 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
1083 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1085 tr->next_index = next[0];
1087 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
1089 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
1091 tr->next_index = next[1];
1093 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
1095 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
1097 tr->next_index = next[2];
1099 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
1101 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
1103 tr->next_index = next[3];
1114 next[0] = (esp_post_data (b[0]))->next_index;
1115 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1117 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1119 tr->next_index = next[0];
1127 vlib_node_increment_counter (vm, node->node_index,
1128 ESP_ENCRYPT_ERROR_POST_RX_PKTS,
1130 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1131 return frame->n_vectors;
1134 VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
1135 vlib_node_runtime_t * node,
1136 vlib_frame_t * from_frame)
1138 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
1139 esp_encrypt_async_next.esp4_post_next);
1143 VLIB_REGISTER_NODE (esp4_encrypt_node) = {
1144 .name = "esp4-encrypt",
1145 .vector_size = sizeof (u32),
1146 .format_trace = format_esp_encrypt_trace,
1147 .type = VLIB_NODE_TYPE_INTERNAL,
1149 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1150 .error_strings = esp_encrypt_error_strings,
1152 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1153 .next_nodes = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1154 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1155 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1156 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
1157 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
1158 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
1159 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output" },
1163 VLIB_NODE_FN (esp4_encrypt_post_node) (vlib_main_t * vm,
1164 vlib_node_runtime_t * node,
1165 vlib_frame_t * from_frame)
1167 return esp_encrypt_post_inline (vm, node, from_frame);
1171 VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
1172 .name = "esp4-encrypt-post",
1173 .vector_size = sizeof (u32),
1174 .format_trace = format_esp_post_encrypt_trace,
1175 .type = VLIB_NODE_TYPE_INTERNAL,
1176 .sibling_of = "esp4-encrypt",
1178 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1179 .error_strings = esp_encrypt_error_strings,
1183 VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
1184 vlib_node_runtime_t * node,
1185 vlib_frame_t * from_frame)
1187 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
1188 esp_encrypt_async_next.esp6_post_next);
1192 VLIB_REGISTER_NODE (esp6_encrypt_node) = {
1193 .name = "esp6-encrypt",
1194 .vector_size = sizeof (u32),
1195 .format_trace = format_esp_encrypt_trace,
1196 .type = VLIB_NODE_TYPE_INTERNAL,
1197 .sibling_of = "esp4-encrypt",
1199 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1200 .error_strings = esp_encrypt_error_strings,
1204 VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
1205 vlib_node_runtime_t * node,
1206 vlib_frame_t * from_frame)
1208 return esp_encrypt_post_inline (vm, node, from_frame);
1212 VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
1213 .name = "esp6-encrypt-post",
1214 .vector_size = sizeof (u32),
1215 .format_trace = format_esp_post_encrypt_trace,
1216 .type = VLIB_NODE_TYPE_INTERNAL,
1217 .sibling_of = "esp4-encrypt",
1219 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1220 .error_strings = esp_encrypt_error_strings,
1224 VLIB_NODE_FN (esp4_encrypt_tun_node) (vlib_main_t * vm,
1225 vlib_node_runtime_t * node,
1226 vlib_frame_t * from_frame)
1228 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 1,
1229 esp_encrypt_async_next.esp4_tun_post_next);
1233 VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
1234 .name = "esp4-encrypt-tun",
1235 .vector_size = sizeof (u32),
1236 .format_trace = format_esp_encrypt_trace,
1237 .type = VLIB_NODE_TYPE_INTERNAL,
1239 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1240 .error_strings = esp_encrypt_error_strings,
1242 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1244 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1245 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1246 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1247 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1248 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1249 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1250 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1254 VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
1255 vlib_node_runtime_t * node,
1256 vlib_frame_t * from_frame)
1258 return esp_encrypt_post_inline (vm, node, from_frame);
1262 VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
1263 .name = "esp4-encrypt-tun-post",
1264 .vector_size = sizeof (u32),
1265 .format_trace = format_esp_post_encrypt_trace,
1266 .type = VLIB_NODE_TYPE_INTERNAL,
1267 .sibling_of = "esp4-encrypt-tun",
1269 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1270 .error_strings = esp_encrypt_error_strings,
1274 VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
1275 vlib_node_runtime_t * node,
1276 vlib_frame_t * from_frame)
1278 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
1279 esp_encrypt_async_next.esp6_tun_post_next);
1283 VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
1284 .name = "esp6-encrypt-tun",
1285 .vector_size = sizeof (u32),
1286 .format_trace = format_esp_encrypt_trace,
1287 .type = VLIB_NODE_TYPE_INTERNAL,
1289 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1290 .error_strings = esp_encrypt_error_strings,
1292 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1294 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1295 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1296 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1297 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1298 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1299 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1300 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1306 VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
1307 vlib_node_runtime_t * node,
1308 vlib_frame_t * from_frame)
1310 return esp_encrypt_post_inline (vm, node, from_frame);
1314 VLIB_REGISTER_NODE (esp6_encrypt_tun_post_node) = {
1315 .name = "esp6-encrypt-tun-post",
1316 .vector_size = sizeof (u32),
1317 .format_trace = format_esp_post_encrypt_trace,
1318 .type = VLIB_NODE_TYPE_INTERNAL,
1319 .sibling_of = "esp-mpls-encrypt-tun",
1321 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1322 .error_strings = esp_encrypt_error_strings,
1326 VLIB_NODE_FN (esp_mpls_encrypt_tun_node)
1327 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1329 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_MPLS, 1,
1330 esp_encrypt_async_next.esp_mpls_tun_post_next);
1333 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
1334 .name = "esp-mpls-encrypt-tun",
1335 .vector_size = sizeof (u32),
1336 .format_trace = format_esp_encrypt_trace,
1337 .type = VLIB_NODE_TYPE_INTERNAL,
1339 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1340 .error_strings = esp_encrypt_error_strings,
1342 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1344 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1345 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1346 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1347 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1348 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1349 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1350 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1354 VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
1355 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1357 return esp_encrypt_post_inline (vm, node, from_frame);
1360 VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
1361 .name = "esp-mpls-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 = ARRAY_LEN (esp_encrypt_error_strings),
1368 .error_strings = esp_encrypt_error_strings,
1374 } esp_no_crypto_trace_t;
1377 format_esp_no_crypto_trace (u8 * s, va_list * args)
1379 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1380 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1381 esp_no_crypto_trace_t *t = va_arg (*args, esp_no_crypto_trace_t *);
1383 s = format (s, "esp-no-crypto: sa-index %u", t->sa_index);
1390 ESP_NO_CRYPTO_NEXT_DROP,
1391 ESP_NO_CRYPTO_N_NEXT,
1396 ESP_NO_CRYPTO_ERROR_RX_PKTS,
1399 static char *esp_no_crypto_error_strings[] = {
1400 "Outbound ESP packets received",
1404 esp_no_crypto_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1405 vlib_frame_t * frame)
1407 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1408 u32 *from = vlib_frame_vector_args (frame);
1409 u32 n_left = frame->n_vectors;
1411 vlib_get_buffers (vm, from, b, n_left);
1417 /* packets are always going to be dropped, but get the sa_index */
1418 sa_index0 = ipsec_tun_protect_get_sa_out
1419 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
1421 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1423 esp_no_crypto_trace_t *tr = vlib_add_trace (vm, node, b[0],
1425 tr->sa_index = sa_index0;
1432 vlib_node_increment_counter (vm, node->node_index,
1433 ESP_NO_CRYPTO_ERROR_RX_PKTS, frame->n_vectors);
1435 vlib_buffer_enqueue_to_single_next (vm, node, from,
1436 ESP_NO_CRYPTO_NEXT_DROP,
1439 return frame->n_vectors;
1442 VLIB_NODE_FN (esp4_no_crypto_tun_node) (vlib_main_t * vm,
1443 vlib_node_runtime_t * node,
1444 vlib_frame_t * from_frame)
1446 return esp_no_crypto_inline (vm, node, from_frame);
1450 VLIB_REGISTER_NODE (esp4_no_crypto_tun_node) =
1452 .name = "esp4-no-crypto",
1453 .vector_size = sizeof (u32),
1454 .format_trace = format_esp_no_crypto_trace,
1455 .n_errors = ARRAY_LEN(esp_no_crypto_error_strings),
1456 .error_strings = esp_no_crypto_error_strings,
1457 .n_next_nodes = ESP_NO_CRYPTO_N_NEXT,
1459 [ESP_NO_CRYPTO_NEXT_DROP] = "ip4-drop",
1463 VLIB_NODE_FN (esp6_no_crypto_tun_node) (vlib_main_t * vm,
1464 vlib_node_runtime_t * node,
1465 vlib_frame_t * from_frame)
1467 return esp_no_crypto_inline (vm, node, from_frame);
1471 VLIB_REGISTER_NODE (esp6_no_crypto_tun_node) =
1473 .name = "esp6-no-crypto",
1474 .vector_size = sizeof (u32),
1475 .format_trace = format_esp_no_crypto_trace,
1476 .n_errors = ARRAY_LEN(esp_no_crypto_error_strings),
1477 .error_strings = esp_no_crypto_error_strings,
1478 .n_next_nodes = ESP_NO_CRYPTO_N_NEXT,
1480 [ESP_NO_CRYPTO_NEXT_DROP] = "ip6-drop",
1485 #ifndef CLIB_MARCH_VARIANT
1487 static clib_error_t *
1488 esp_encrypt_init (vlib_main_t *vm)
1490 ipsec_main_t *im = &ipsec_main;
1492 im->esp4_enc_fq_index =
1493 vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
1494 im->esp6_enc_fq_index =
1495 vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
1496 im->esp4_enc_tun_fq_index =
1497 vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
1498 im->esp6_enc_tun_fq_index =
1499 vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
1500 im->esp_mpls_enc_tun_fq_index =
1501 vlib_frame_queue_main_init (esp_mpls_encrypt_tun_node.index, 0);
1506 VLIB_INIT_FUNCTION (esp_encrypt_init);
1511 * fd.io coding-style-patch-verification: ON
1514 * eval: (c-set-style "gnu")