dpdk: fix udp-encap for esp in transport mode
[vpp.git] / src / plugins / dpdk / ipsec / esp_encrypt.c
1 /*
2  * esp_encrypt.c : IPSec ESP encrypt node using DPDK Cryptodev
3  *
4  * Copyright (c) 2017 Intel 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:
8  *
9  *     http://www.apache.org/licenses/LICENSE-2.0
10  *
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.
16  */
17
18 #include <vnet/vnet.h>
19 #include <vnet/api_errno.h>
20 #include <vnet/ip/ip.h>
21
22 #include <vnet/ipsec/ipsec.h>
23 #include <vnet/ipsec/esp.h>
24 #include <vnet/udp/udp.h>
25 #include <dpdk/buffer.h>
26 #include <dpdk/ipsec/ipsec.h>
27 #include <vnet/ipsec/ipsec_tun.h>
28 #include <dpdk/device/dpdk.h>
29 #include <dpdk/device/dpdk_priv.h>
30
31 #define foreach_esp_encrypt_next                   \
32 _(DROP, "error-drop")                              \
33 _(IP4_LOOKUP, "ip4-lookup")                        \
34 _(IP6_LOOKUP, "ip6-lookup")                        \
35 _(INTERFACE_OUTPUT, "interface-output")
36
37 #define _(v, s) ESP_ENCRYPT_NEXT_##v,
38 typedef enum
39 {
40   foreach_esp_encrypt_next
41 #undef _
42     ESP_ENCRYPT_N_NEXT,
43 } esp_encrypt_next_t;
44
45 #define foreach_esp_encrypt_error                   \
46  _(RX_PKTS, "ESP pkts received")                    \
47  _(SEQ_CYCLED, "Sequence number cycled")            \
48  _(ENQ_FAIL, "Enqueue failed to crypto device")     \
49  _(DISCARD, "Not enough crypto operations, discarding frame")  \
50  _(SESSION, "Failed to get crypto session")         \
51  _(NOSUP, "Cipher/Auth not supported")
52
53
54 typedef enum
55 {
56 #define _(sym,str) ESP_ENCRYPT_ERROR_##sym,
57   foreach_esp_encrypt_error
58 #undef _
59     ESP_ENCRYPT_N_ERROR,
60 } esp_encrypt_error_t;
61
62 static char *esp_encrypt_error_strings[] = {
63 #define _(sym,string) string,
64   foreach_esp_encrypt_error
65 #undef _
66 };
67
68 extern vlib_node_registration_t dpdk_esp4_encrypt_node;
69 extern vlib_node_registration_t dpdk_esp6_encrypt_node;
70 extern vlib_node_registration_t dpdk_esp4_encrypt_tun_node;
71 extern vlib_node_registration_t dpdk_esp6_encrypt_tun_node;
72
73 typedef struct
74 {
75   ipsec_crypto_alg_t crypto_alg;
76   ipsec_integ_alg_t integ_alg;
77   u8 packet_data[64];
78 } esp_encrypt_trace_t;
79
80 /* packet trace format function */
81 static u8 *
82 format_esp_encrypt_trace (u8 * s, va_list * args)
83 {
84   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
85   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
86   esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
87   ip4_header_t *ih4 = (ip4_header_t *) t->packet_data;
88   u32 indent = format_get_indent (s), offset;
89
90   s = format (s, "cipher %U auth %U\n",
91               format_ipsec_crypto_alg, t->crypto_alg,
92               format_ipsec_integ_alg, t->integ_alg);
93
94   if ((ih4->ip_version_and_header_length & 0xF0) == 0x60)
95     {
96       s = format (s, "%U%U", format_white_space, indent,
97                   format_ip6_header, ih4);
98       offset = sizeof (ip6_header_t);
99     }
100   else
101     {
102       s = format (s, "%U%U", format_white_space, indent,
103                   format_ip4_header, ih4);
104       offset = ip4_header_bytes (ih4);
105     }
106
107   s = format (s, "\n%U%U", format_white_space, indent,
108               format_esp_header, t->packet_data + offset);
109
110   return s;
111 }
112
113 always_inline uword
114 dpdk_esp_encrypt_inline (vlib_main_t * vm,
115                          vlib_node_runtime_t * node,
116                          vlib_frame_t * from_frame, int is_ip6, int is_tun)
117 {
118   u32 n_left_from, *from, *to_next, next_index, thread_index;
119   ipsec_main_t *im = &ipsec_main;
120   vnet_main_t *vnm = im->vnet_main;
121   vnet_interface_main_t *vim = &vnm->interface_main;
122   u32 thread_idx = vlib_get_thread_index ();
123   dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
124   crypto_resource_t *res = 0;
125   ipsec_sa_t *sa0 = 0;
126   crypto_alg_t *cipher_alg = 0, *auth_alg = 0;
127   struct rte_cryptodev_sym_session *session = 0;
128   u32 ret, last_sa_index = ~0;
129   u8 numa = rte_socket_id ();
130   u8 is_aead = 0;
131   crypto_worker_main_t *cwm =
132     vec_elt_at_index (dcm->workers_main, thread_idx);
133   struct rte_crypto_op **ops = cwm->ops;
134
135   from = vlib_frame_vector_args (from_frame);
136   n_left_from = from_frame->n_vectors;
137   thread_index = vm->thread_index;
138
139   ret = crypto_alloc_ops (numa, ops, n_left_from);
140   if (ret)
141     {
142       if (is_ip6)
143         vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index,
144                                      ESP_ENCRYPT_ERROR_DISCARD, 1);
145       else
146         vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index,
147                                      ESP_ENCRYPT_ERROR_DISCARD, 1);
148       /* Discard whole frame */
149       return n_left_from;
150     }
151
152   next_index = ESP_ENCRYPT_NEXT_DROP;
153
154   while (n_left_from > 0)
155     {
156       u32 n_left_to_next;
157
158       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
159
160       while (n_left_from > 0 && n_left_to_next > 0)
161         {
162           clib_error_t *error;
163           u32 bi0, bi1;
164           vlib_buffer_t *b0, *b1;
165           u32 sa_index0;
166           ip4_and_esp_header_t *ih0, *oh0 = 0;
167           ip6_and_esp_header_t *ih6_0, *oh6_0 = 0;
168           ip4_and_udp_and_esp_header_t *ouh0 = 0;
169           esp_header_t *esp0;
170           esp_footer_t *f0;
171           u8 next_hdr_type;
172           u32 iv_size;
173           u16 orig_sz;
174           u8 trunc_size;
175           u16 rewrite_len;
176           u16 udp_encap_adv = 0;
177           struct rte_mbuf *mb0;
178           struct rte_crypto_op *op;
179           u16 res_idx;
180
181           bi0 = from[0];
182           from += 1;
183           n_left_from -= 1;
184
185           b0 = vlib_get_buffer (vm, bi0);
186           ih0 = vlib_buffer_get_current (b0);
187           mb0 = rte_mbuf_from_vlib_buffer (b0);
188
189           /* ih0/ih6_0 */
190           CLIB_PREFETCH (ih0, sizeof (ih6_0[0]), LOAD);
191           /* f0 */
192           CLIB_PREFETCH (vlib_buffer_get_tail (b0), 20, STORE);
193           /* mb0 */
194           CLIB_PREFETCH (mb0, CLIB_CACHE_LINE_BYTES, STORE);
195
196           if (n_left_from > 1)
197             {
198               bi1 = from[1];
199               b1 = vlib_get_buffer (vm, bi1);
200
201               CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, LOAD);
202               CLIB_PREFETCH (b1->data - CLIB_CACHE_LINE_BYTES,
203                              CLIB_CACHE_LINE_BYTES, STORE);
204             }
205
206           op = ops[0];
207           ops += 1;
208           ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED);
209
210           dpdk_op_priv_t *priv = crypto_op_get_priv (op);
211           /* store bi in op private */
212           priv->bi = bi0;
213           priv->encrypt = 1;
214
215           u16 op_len =
216             sizeof (op[0]) + sizeof (op[0].sym[0]) + sizeof (priv[0]);
217           CLIB_PREFETCH (op, op_len, STORE);
218
219           if (is_tun)
220             {
221               /* we are on a ipsec tunnel's feature arc */
222               vnet_buffer (b0)->ipsec.sad_index =
223                 sa_index0 = ipsec_tun_protect_get_sa_out
224                 (vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
225             }
226           else
227             sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
228
229           if (sa_index0 != last_sa_index)
230             {
231               sa0 = pool_elt_at_index (im->sad, sa_index0);
232
233               cipher_alg =
234                 vec_elt_at_index (dcm->cipher_algs, sa0->crypto_alg);
235               auth_alg = vec_elt_at_index (dcm->auth_algs, sa0->integ_alg);
236
237               is_aead = (cipher_alg->type == RTE_CRYPTO_SYM_XFORM_AEAD);
238
239               if (is_aead)
240                 auth_alg = cipher_alg;
241
242               res_idx = get_resource (cwm, sa0);
243
244               if (PREDICT_FALSE (res_idx == (u16) ~ 0))
245                 {
246                   clib_warning ("unsupported SA by thread index %u",
247                                 thread_idx);
248                   if (is_ip6)
249                     vlib_node_increment_counter (vm,
250                                                  dpdk_esp6_encrypt_node.index,
251                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
252                   else
253                     vlib_node_increment_counter (vm,
254                                                  dpdk_esp4_encrypt_node.index,
255                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
256                   to_next[0] = bi0;
257                   to_next += 1;
258                   n_left_to_next -= 1;
259                   goto trace;
260                 }
261               res = vec_elt_at_index (dcm->resource, res_idx);
262
263               error = crypto_get_session (&session, sa_index0, res, cwm, 1);
264               if (PREDICT_FALSE (error || !session))
265                 {
266                   clib_warning ("failed to get crypto session");
267                   if (is_ip6)
268                     vlib_node_increment_counter (vm,
269                                                  dpdk_esp6_encrypt_node.index,
270                                                  ESP_ENCRYPT_ERROR_SESSION,
271                                                  1);
272                   else
273                     vlib_node_increment_counter (vm,
274                                                  dpdk_esp4_encrypt_node.index,
275                                                  ESP_ENCRYPT_ERROR_SESSION,
276                                                  1);
277                   to_next[0] = bi0;
278                   to_next += 1;
279                   n_left_to_next -= 1;
280                   goto trace;
281                 }
282
283               last_sa_index = sa_index0;
284             }
285
286           if (PREDICT_FALSE (esp_seq_advance (sa0)))
287             {
288               clib_warning
289                 ("sequence number counter has cycled SPI %u (0x%08x)",
290                  sa0->spi, sa0->spi);
291               if (is_ip6)
292                 vlib_node_increment_counter (vm,
293                                              dpdk_esp6_encrypt_node.index,
294                                              ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
295               else
296                 vlib_node_increment_counter (vm,
297                                              dpdk_esp4_encrypt_node.index,
298                                              ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
299               //TODO: rekey SA
300               to_next[0] = bi0;
301               to_next += 1;
302               n_left_to_next -= 1;
303               goto trace;
304             }
305
306           orig_sz = b0->current_length;
307
308           /* TODO multi-seg support - total_length_not_including_first_buffer */
309           vlib_increment_combined_counter
310             (&ipsec_sa_counters, thread_index, sa_index0,
311              1, b0->current_length);
312
313           /* Update tunnel interface tx counters */
314           if (is_tun)
315             vlib_increment_combined_counter
316               (vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX,
317                thread_index, vnet_buffer (b0)->sw_if_index[VLIB_TX],
318                1, b0->current_length);
319
320           res->ops[res->n_ops] = op;
321           res->bi[res->n_ops] = bi0;
322           res->n_ops += 1;
323
324           dpdk_gcm_cnt_blk *icb = &priv->cb;
325
326           crypto_set_icb (icb, sa0->salt, sa0->seq, sa0->seq_hi);
327
328           iv_size = cipher_alg->iv_len;
329           trunc_size = auth_alg->trunc_size;
330
331           /* if UDP encapsulation is used adjust the address of the IP header */
332           if (ipsec_sa_is_set_UDP_ENCAP (sa0) && !is_ip6)
333             udp_encap_adv = sizeof (udp_header_t);
334
335           if (ipsec_sa_is_set_IS_TUNNEL (sa0))
336             {
337               rewrite_len = 0;
338               if (!ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))  /* ip4 */
339                 {
340                   /* in tunnel mode send it back to FIB */
341                   priv->next = DPDK_CRYPTO_INPUT_NEXT_IP4_LOOKUP;
342                   u8 adv = sizeof (ip4_header_t) + udp_encap_adv +
343                     sizeof (esp_header_t) + iv_size;
344                   vlib_buffer_advance (b0, -adv);
345                   oh0 = vlib_buffer_get_current (b0);
346                   ouh0 = vlib_buffer_get_current (b0);
347                   next_hdr_type = (is_ip6 ?
348                                    IP_PROTOCOL_IPV6 : IP_PROTOCOL_IP_IN_IP);
349                   /*
350                    * oh0->ip4.ip_version_and_header_length = 0x45;
351                    * oh0->ip4.tos = ih0->ip4.tos;
352                    * oh0->ip4.fragment_id = 0;
353                    * oh0->ip4.flags_and_fragment_offset = 0;
354                    */
355                   oh0->ip4.checksum_data_64[0] =
356                     clib_host_to_net_u64 (0x45ULL << 56);
357                   /*
358                    * oh0->ip4.ttl = 254;
359                    * oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
360                    */
361                   oh0->ip4.checksum_data_32[2] =
362                     clib_host_to_net_u32 (0xfe320000);
363
364                   oh0->ip4.src_address.as_u32 =
365                     sa0->tunnel_src_addr.ip4.as_u32;
366                   oh0->ip4.dst_address.as_u32 =
367                     sa0->tunnel_dst_addr.ip4.as_u32;
368
369                   if (ipsec_sa_is_set_UDP_ENCAP (sa0))
370                     {
371                       oh0->ip4.protocol = IP_PROTOCOL_UDP;
372                       esp0 = &ouh0->esp;
373                     }
374                   else
375                     esp0 = &oh0->esp;
376                   esp0->spi = clib_host_to_net_u32 (sa0->spi);
377                   esp0->seq = clib_host_to_net_u32 (sa0->seq);
378                 }
379               else
380                 {
381                   /* ip6 */
382                   /* in tunnel mode send it back to FIB */
383                   priv->next = DPDK_CRYPTO_INPUT_NEXT_IP6_LOOKUP;
384
385                   u8 adv =
386                     sizeof (ip6_header_t) + sizeof (esp_header_t) + iv_size;
387                   vlib_buffer_advance (b0, -adv);
388                   ih6_0 = (ip6_and_esp_header_t *) ih0;
389                   oh6_0 = vlib_buffer_get_current (b0);
390
391                   next_hdr_type = (is_ip6 ?
392                                    IP_PROTOCOL_IPV6 : IP_PROTOCOL_IP_IN_IP);
393
394                   oh6_0->ip6.ip_version_traffic_class_and_flow_label =
395                     ih6_0->ip6.ip_version_traffic_class_and_flow_label;
396
397                   oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
398                   oh6_0->ip6.hop_limit = 254;
399                   oh6_0->ip6.src_address.as_u64[0] =
400                     sa0->tunnel_src_addr.ip6.as_u64[0];
401                   oh6_0->ip6.src_address.as_u64[1] =
402                     sa0->tunnel_src_addr.ip6.as_u64[1];
403                   oh6_0->ip6.dst_address.as_u64[0] =
404                     sa0->tunnel_dst_addr.ip6.as_u64[0];
405                   oh6_0->ip6.dst_address.as_u64[1] =
406                     sa0->tunnel_dst_addr.ip6.as_u64[1];
407                   esp0 = &oh6_0->esp;
408                   oh6_0->esp.spi = clib_host_to_net_u32 (sa0->spi);
409                   oh6_0->esp.seq = clib_host_to_net_u32 (sa0->seq);
410                 }
411
412               vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
413             }
414           else                  /* transport mode */
415             {
416               if (is_tun)
417                 {
418                   rewrite_len = 0;
419                   priv->next = DPDK_CRYPTO_INPUT_NEXT_MIDCHAIN;
420                 }
421               else
422                 {
423                   priv->next = DPDK_CRYPTO_INPUT_NEXT_INTERFACE_OUTPUT;
424                   rewrite_len = vnet_buffer (b0)->ip.save_rewrite_length;
425                 }
426               u16 adv = sizeof (esp_header_t) + iv_size + udp_encap_adv;
427               vlib_buffer_advance (b0, -adv - rewrite_len);
428               u8 *src = ((u8 *) ih0) - rewrite_len;
429               u8 *dst = vlib_buffer_get_current (b0);
430               oh0 = vlib_buffer_get_current (b0) + rewrite_len;
431               ouh0 = vlib_buffer_get_current (b0) + rewrite_len;
432
433               if (is_ip6)
434                 {
435                   orig_sz -= sizeof (ip6_header_t);
436                   ih6_0 = (ip6_and_esp_header_t *) ih0;
437                   next_hdr_type = ih6_0->ip6.protocol;
438                   memmove (dst, src, rewrite_len + sizeof (ip6_header_t));
439                   oh6_0 = (ip6_and_esp_header_t *) oh0;
440                   oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
441                   esp0 = &oh6_0->esp;
442                 }
443               else              /* ipv4 */
444                 {
445                   u16 ip_size = ip4_header_bytes (&ih0->ip4);
446                   orig_sz -= ip_size;
447                   next_hdr_type = ih0->ip4.protocol;
448                   memmove (dst, src, rewrite_len + ip_size);
449                   oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
450                   esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
451                   if (ipsec_sa_is_set_UDP_ENCAP (sa0))
452                     {
453                       oh0->ip4.protocol = IP_PROTOCOL_UDP;
454                       esp0 = (esp_header_t *)
455                         (((u8 *) oh0) + ip_size + udp_encap_adv);
456                     }
457                   else
458                     {
459                       oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
460                       esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
461                     }
462                 }
463               esp0->spi = clib_host_to_net_u32 (sa0->spi);
464               esp0->seq = clib_host_to_net_u32 (sa0->seq);
465             }
466
467           if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0)
468             {
469               ouh0->udp.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
470               ouh0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
471               ouh0->udp.checksum = 0;
472             }
473           ASSERT (is_pow2 (cipher_alg->boundary));
474           u16 mask = cipher_alg->boundary - 1;
475           u16 pad_payload_len = ((orig_sz + 2) + mask) & ~mask;
476           u8 pad_bytes = pad_payload_len - 2 - orig_sz;
477
478           u8 *padding =
479             vlib_buffer_put_uninit (b0, pad_bytes + 2 + trunc_size);
480
481           /* The extra pad bytes would be overwritten by the digest */
482           if (pad_bytes)
483             clib_memcpy_fast (padding, pad_data, 16);
484
485           f0 = (esp_footer_t *) (padding + pad_bytes);
486           f0->pad_length = pad_bytes;
487           f0->next_header = next_hdr_type;
488
489           if (oh6_0)
490             {
491               u16 len = b0->current_length - sizeof (ip6_header_t);
492               oh6_0->ip6.payload_length =
493                 clib_host_to_net_u16 (len - rewrite_len);
494             }
495           else if (oh0)
496             {
497               oh0->ip4.length =
498                 clib_host_to_net_u16 (b0->current_length - rewrite_len);
499               oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
500               if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0)
501                 {
502                   ouh0->udp.length =
503                     clib_host_to_net_u16 (clib_net_to_host_u16
504                                           (ouh0->ip4.length) -
505                                           ip4_header_bytes (&ouh0->ip4));
506                 }
507             }
508           else                  /* should never happen */
509             clib_warning ("No outer header found for ESP packet");
510
511           b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
512
513           /* mbuf packet starts at ESP header */
514           mb0->data_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
515           mb0->pkt_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
516           mb0->data_off = ((void *) esp0) - mb0->buf_addr;
517
518           u32 cipher_off, cipher_len, auth_len = 0;
519           u32 *aad = NULL;
520
521           u8 *digest = vlib_buffer_get_tail (b0) - trunc_size;
522           u64 digest_paddr =
523             mb0->buf_physaddr + digest - ((u8 *) mb0->buf_addr);
524
525           if (!is_aead && (cipher_alg->alg == RTE_CRYPTO_CIPHER_AES_CBC ||
526                            cipher_alg->alg == RTE_CRYPTO_CIPHER_NULL))
527             {
528               cipher_off = sizeof (esp_header_t);
529               cipher_len = iv_size + pad_payload_len;
530             }
531           else                  /* CTR/GCM */
532             {
533               u32 *esp_iv = (u32 *) (esp0 + 1);
534               esp_iv[0] = sa0->seq;
535               esp_iv[1] = sa0->seq_hi;
536
537               cipher_off = sizeof (esp_header_t) + iv_size;
538               cipher_len = pad_payload_len;
539             }
540
541           if (is_aead)
542             {
543               aad = (u32 *) priv->aad;
544               aad[0] = esp0->spi;
545
546               /* aad[3] should always be 0 */
547               if (PREDICT_FALSE (ipsec_sa_is_set_USE_ESN (sa0)))
548                 {
549                   aad[1] = clib_host_to_net_u32 (sa0->seq_hi);
550                   aad[2] = esp0->seq;
551                 }
552               else
553                 {
554                   aad[1] = esp0->seq;
555                   aad[2] = 0;
556                 }
557             }
558           else
559             {
560               auth_len =
561                 vlib_buffer_get_tail (b0) - ((u8 *) esp0) - trunc_size;
562               if (ipsec_sa_is_set_USE_ESN (sa0))
563                 {
564                   u32 *_digest = (u32 *) digest;
565                   _digest[0] = clib_host_to_net_u32 (sa0->seq_hi);
566                   auth_len += 4;
567                 }
568             }
569
570           crypto_op_setup (is_aead, mb0, op, session, cipher_off, cipher_len,
571                            0, auth_len, (u8 *) aad, digest, digest_paddr);
572
573         trace:
574           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
575             {
576               esp_encrypt_trace_t *tr =
577                 vlib_add_trace (vm, node, b0, sizeof (*tr));
578               tr->crypto_alg = sa0->crypto_alg;
579               tr->integ_alg = sa0->integ_alg;
580               u8 *p = vlib_buffer_get_current (b0);
581               if (!ipsec_sa_is_set_IS_TUNNEL (sa0) && !is_tun)
582                 p += vnet_buffer (b0)->ip.save_rewrite_length;
583               clib_memcpy_fast (tr->packet_data, p, sizeof (tr->packet_data));
584             }
585         }
586       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
587     }
588   if (is_ip6)
589     {
590       vlib_node_increment_counter (vm,
591                                    (is_tun ?
592                                     dpdk_esp6_encrypt_tun_node.index :
593                                     dpdk_esp6_encrypt_node.index),
594                                    ESP_ENCRYPT_ERROR_RX_PKTS,
595                                    from_frame->n_vectors);
596
597       crypto_enqueue_ops (vm, cwm, dpdk_esp6_encrypt_node.index,
598                           ESP_ENCRYPT_ERROR_ENQ_FAIL, numa, 1 /* encrypt */ );
599     }
600   else
601     {
602       vlib_node_increment_counter (vm,
603                                    (is_tun ?
604                                     dpdk_esp4_encrypt_tun_node.index :
605                                     dpdk_esp4_encrypt_node.index),
606                                    ESP_ENCRYPT_ERROR_RX_PKTS,
607                                    from_frame->n_vectors);
608
609       crypto_enqueue_ops (vm, cwm, dpdk_esp4_encrypt_node.index,
610                           ESP_ENCRYPT_ERROR_ENQ_FAIL, numa, 1 /* encrypt */ );
611     }
612
613   crypto_free_ops (numa, ops, cwm->ops + from_frame->n_vectors - ops);
614
615   return from_frame->n_vectors;
616 }
617
618 VLIB_NODE_FN (dpdk_esp4_encrypt_node) (vlib_main_t * vm,
619                                        vlib_node_runtime_t * node,
620                                        vlib_frame_t * from_frame)
621 {
622   return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ , 0);
623 }
624
625 /* *INDENT-OFF* */
626 VLIB_REGISTER_NODE (dpdk_esp4_encrypt_node) = {
627   .name = "dpdk-esp4-encrypt",
628   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
629   .vector_size = sizeof (u32),
630   .format_trace = format_esp_encrypt_trace,
631   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
632   .error_strings = esp_encrypt_error_strings,
633   .n_next_nodes = 1,
634   .next_nodes =
635     {
636       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
637     }
638 };
639 /* *INDENT-ON* */
640
641 VLIB_NODE_FN (dpdk_esp6_encrypt_node) (vlib_main_t * vm,
642                                        vlib_node_runtime_t * node,
643                                        vlib_frame_t * from_frame)
644 {
645   return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ , 0);
646 }
647
648 /* *INDENT-OFF* */
649 VLIB_REGISTER_NODE (dpdk_esp6_encrypt_node) = {
650   .name = "dpdk-esp6-encrypt",
651   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
652   .vector_size = sizeof (u32),
653   .format_trace = format_esp_encrypt_trace,
654   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
655   .error_strings = esp_encrypt_error_strings,
656   .n_next_nodes = 1,
657   .next_nodes =
658     {
659       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
660     }
661 };
662 /* *INDENT-ON* */
663
664 VLIB_NODE_FN (dpdk_esp4_encrypt_tun_node) (vlib_main_t * vm,
665                                            vlib_node_runtime_t * node,
666                                            vlib_frame_t * from_frame)
667 {
668   return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ , 1);
669 }
670
671 /* *INDENT-OFF* */
672 VLIB_REGISTER_NODE (dpdk_esp4_encrypt_tun_node) = {
673   .name = "dpdk-esp4-encrypt-tun",
674   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
675   .vector_size = sizeof (u32),
676   .format_trace = format_esp_encrypt_trace,
677   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
678   .error_strings = esp_encrypt_error_strings,
679   .n_next_nodes = 1,
680   .next_nodes =
681     {
682       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
683     }
684 };
685
686 VNET_FEATURE_INIT (dpdk_esp4_encrypt_tun_feat_node, static) =
687 {
688   .arc_name = "ip4-output",
689   .node_name = "dpdk-esp4-encrypt-tun",
690   .runs_before = VNET_FEATURES ("adj-midchain-tx"),
691 };
692 /* *INDENT-ON* */
693
694 VLIB_NODE_FN (dpdk_esp6_encrypt_tun_node) (vlib_main_t * vm,
695                                            vlib_node_runtime_t * node,
696                                            vlib_frame_t * from_frame)
697 {
698   return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ , 1);
699 }
700
701 /* *INDENT-OFF* */
702 VLIB_REGISTER_NODE (dpdk_esp6_encrypt_tun_node) = {
703   .name = "dpdk-esp6-encrypt-tun",
704   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
705   .vector_size = sizeof (u32),
706   .format_trace = format_esp_encrypt_trace,
707   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
708   .error_strings = esp_encrypt_error_strings,
709   .n_next_nodes = 1,
710   .next_nodes =
711     {
712       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
713     }
714 };
715
716 VNET_FEATURE_INIT (dpdk_esp6_encrypt_tun_feat_node, static) =
717 {
718   .arc_name = "ip6-output",
719   .node_name = "dpdk-esp6-encrypt-tun",
720   .runs_before = VNET_FEATURES ("adj-midchain-tx"),
721 };
722 /* *INDENT-ON* */
723
724 /*
725  * fd.io coding-style-patch-verification: ON
726  *
727  * Local Variables:
728  * eval: (c-set-style "gnu")
729  * End:
730  */