2 * esp_encrypt.c : IPSec ESP encrypt node using DPDK Cryptodev
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:
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/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 <dpdk/device/dpdk.h>
28 #include <dpdk/device/dpdk_priv.h>
30 #define foreach_esp_encrypt_next \
31 _(DROP, "error-drop") \
32 _(IP4_LOOKUP, "ip4-lookup") \
33 _(IP6_LOOKUP, "ip6-lookup") \
34 _(INTERFACE_OUTPUT, "interface-output")
36 #define _(v, s) ESP_ENCRYPT_NEXT_##v,
39 foreach_esp_encrypt_next
44 #define foreach_esp_encrypt_error \
45 _(RX_PKTS, "ESP pkts received") \
46 _(SEQ_CYCLED, "Sequence number cycled") \
47 _(ENQ_FAIL, "Enqueue failed to crypto device") \
48 _(DISCARD, "Not enough crypto operations, discarding frame") \
49 _(SESSION, "Failed to get crypto session") \
50 _(NOSUP, "Cipher/Auth not supported")
55 #define _(sym,str) ESP_ENCRYPT_ERROR_##sym,
56 foreach_esp_encrypt_error
59 } esp_encrypt_error_t;
61 static char *esp_encrypt_error_strings[] = {
62 #define _(sym,string) string,
63 foreach_esp_encrypt_error
67 extern vlib_node_registration_t dpdk_esp4_encrypt_node;
68 extern vlib_node_registration_t dpdk_esp6_encrypt_node;
72 ipsec_crypto_alg_t crypto_alg;
73 ipsec_integ_alg_t integ_alg;
75 } esp_encrypt_trace_t;
77 /* packet trace format function */
79 format_esp_encrypt_trace (u8 * s, va_list * args)
81 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
82 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
83 esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
84 ip4_header_t *ih4 = (ip4_header_t *) t->packet_data;
85 u32 indent = format_get_indent (s), offset;
87 s = format (s, "cipher %U auth %U\n",
88 format_ipsec_crypto_alg, t->crypto_alg,
89 format_ipsec_integ_alg, t->integ_alg);
91 if ((ih4->ip_version_and_header_length & 0xF0) == 0x60)
93 s = format (s, "%U%U", format_white_space, indent,
94 format_ip6_header, ih4);
95 offset = sizeof (ip6_header_t);
99 s = format (s, "%U%U", format_white_space, indent,
100 format_ip4_header, ih4);
101 offset = ip4_header_bytes (ih4);
104 s = format (s, "\n%U%U", format_white_space, indent,
105 format_esp_header, t->packet_data + offset);
111 dpdk_esp_encrypt_inline (vlib_main_t * vm,
112 vlib_node_runtime_t * node,
113 vlib_frame_t * from_frame, int is_ip6, int is_tun)
115 u32 n_left_from, *from, *to_next, next_index, thread_index;
116 ipsec_main_t *im = &ipsec_main;
117 vnet_main_t *vnm = im->vnet_main;
118 vnet_interface_main_t *vim = &vnm->interface_main;
119 u32 thread_idx = vlib_get_thread_index ();
120 dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
121 crypto_resource_t *res = 0;
123 crypto_alg_t *cipher_alg = 0, *auth_alg = 0;
124 struct rte_cryptodev_sym_session *session = 0;
125 u32 ret, last_sa_index = ~0;
126 u8 numa = rte_socket_id ();
128 crypto_worker_main_t *cwm =
129 vec_elt_at_index (dcm->workers_main, thread_idx);
130 struct rte_crypto_op **ops = cwm->ops;
132 from = vlib_frame_vector_args (from_frame);
133 n_left_from = from_frame->n_vectors;
134 thread_index = vm->thread_index;
136 ret = crypto_alloc_ops (numa, ops, n_left_from);
140 vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index,
141 ESP_ENCRYPT_ERROR_DISCARD, 1);
143 vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index,
144 ESP_ENCRYPT_ERROR_DISCARD, 1);
145 /* Discard whole frame */
149 next_index = ESP_ENCRYPT_NEXT_DROP;
151 while (n_left_from > 0)
155 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
157 while (n_left_from > 0 && n_left_to_next > 0)
161 vlib_buffer_t *b0, *b1;
163 ip4_and_esp_header_t *ih0, *oh0 = 0;
164 ip6_and_esp_header_t *ih6_0, *oh6_0 = 0;
165 ip4_and_udp_and_esp_header_t *ouh0 = 0;
173 u16 udp_encap_adv = 0;
174 struct rte_mbuf *mb0;
175 struct rte_crypto_op *op;
182 b0 = vlib_get_buffer (vm, bi0);
183 ih0 = vlib_buffer_get_current (b0);
184 mb0 = rte_mbuf_from_vlib_buffer (b0);
187 CLIB_PREFETCH (ih0, sizeof (ih6_0[0]), LOAD);
189 CLIB_PREFETCH (vlib_buffer_get_tail (b0), 20, STORE);
191 CLIB_PREFETCH (mb0, CLIB_CACHE_LINE_BYTES, STORE);
196 b1 = vlib_get_buffer (vm, bi1);
198 CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, LOAD);
199 CLIB_PREFETCH (b1->data - CLIB_CACHE_LINE_BYTES,
200 CLIB_CACHE_LINE_BYTES, STORE);
205 ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED);
207 dpdk_op_priv_t *priv = crypto_op_get_priv (op);
208 /* store bi in op private */
213 sizeof (op[0]) + sizeof (op[0].sym[0]) + sizeof (priv[0]);
214 CLIB_PREFETCH (op, op_len, STORE);
219 /* we are on a ipsec tunnel's feature arc */
220 sa_index0 = *(u32 *) vnet_feature_next_with_data (&tmp, b0,
225 sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
227 if (sa_index0 != last_sa_index)
229 sa0 = pool_elt_at_index (im->sad, sa_index0);
232 vec_elt_at_index (dcm->cipher_algs, sa0->crypto_alg);
233 auth_alg = vec_elt_at_index (dcm->auth_algs, sa0->integ_alg);
235 is_aead = (cipher_alg->type == RTE_CRYPTO_SYM_XFORM_AEAD);
238 auth_alg = cipher_alg;
240 res_idx = get_resource (cwm, sa0);
242 if (PREDICT_FALSE (res_idx == (u16) ~ 0))
244 clib_warning ("unsupported SA by thread index %u",
247 vlib_node_increment_counter (vm,
248 dpdk_esp6_encrypt_node.index,
249 ESP_ENCRYPT_ERROR_NOSUP, 1);
251 vlib_node_increment_counter (vm,
252 dpdk_esp4_encrypt_node.index,
253 ESP_ENCRYPT_ERROR_NOSUP, 1);
259 res = vec_elt_at_index (dcm->resource, res_idx);
261 error = crypto_get_session (&session, sa_index0, res, cwm, 1);
262 if (PREDICT_FALSE (error || !session))
264 clib_warning ("failed to get crypto session");
266 vlib_node_increment_counter (vm,
267 dpdk_esp6_encrypt_node.index,
268 ESP_ENCRYPT_ERROR_SESSION,
271 vlib_node_increment_counter (vm,
272 dpdk_esp4_encrypt_node.index,
273 ESP_ENCRYPT_ERROR_SESSION,
281 last_sa_index = sa_index0;
284 if (PREDICT_FALSE (esp_seq_advance (sa0)))
287 ("sequence number counter has cycled SPI %u (0x%08x)",
290 vlib_node_increment_counter (vm,
291 dpdk_esp6_encrypt_node.index,
292 ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
294 vlib_node_increment_counter (vm,
295 dpdk_esp4_encrypt_node.index,
296 ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
304 orig_sz = b0->current_length;
306 /* TODO multi-seg support - total_length_not_including_first_buffer */
307 vlib_increment_combined_counter
308 (&ipsec_sa_counters, thread_index, sa_index0,
309 1, b0->current_length);
311 /* Update tunnel interface tx counters */
313 vlib_increment_combined_counter
314 (vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX,
315 thread_index, vnet_buffer (b0)->sw_if_index[VLIB_TX],
316 1, b0->current_length);
318 res->ops[res->n_ops] = op;
319 res->bi[res->n_ops] = bi0;
322 dpdk_gcm_cnt_blk *icb = &priv->cb;
324 crypto_set_icb (icb, sa0->salt, sa0->seq, sa0->seq_hi);
326 iv_size = cipher_alg->iv_len;
327 trunc_size = auth_alg->trunc_size;
329 /* if UDP encapsulation is used adjust the address of the IP header */
330 if (ipsec_sa_is_set_UDP_ENCAP (sa0) && !is_ip6)
331 udp_encap_adv = sizeof (udp_header_t);
333 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
336 if (!ipsec_sa_is_set_IS_TUNNEL_V6 (sa0)) /* ip4 */
338 /* in tunnel mode send it back to FIB */
339 priv->next = DPDK_CRYPTO_INPUT_NEXT_IP4_LOOKUP;
340 u8 adv = sizeof (ip4_header_t) + udp_encap_adv +
341 sizeof (esp_header_t) + iv_size;
342 vlib_buffer_advance (b0, -adv);
343 oh0 = vlib_buffer_get_current (b0);
344 ouh0 = vlib_buffer_get_current (b0);
345 next_hdr_type = (is_ip6 ?
346 IP_PROTOCOL_IPV6 : IP_PROTOCOL_IP_IN_IP);
348 * oh0->ip4.ip_version_and_header_length = 0x45;
349 * oh0->ip4.tos = ih0->ip4.tos;
350 * oh0->ip4.fragment_id = 0;
351 * oh0->ip4.flags_and_fragment_offset = 0;
353 oh0->ip4.checksum_data_64[0] =
354 clib_host_to_net_u64 (0x45ULL << 56);
356 * oh0->ip4.ttl = 254;
357 * oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
359 oh0->ip4.checksum_data_32[2] =
360 clib_host_to_net_u32 (0xfe320000);
362 oh0->ip4.src_address.as_u32 =
363 sa0->tunnel_src_addr.ip4.as_u32;
364 oh0->ip4.dst_address.as_u32 =
365 sa0->tunnel_dst_addr.ip4.as_u32;
367 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
369 oh0->ip4.protocol = IP_PROTOCOL_UDP;
374 esp0->spi = clib_host_to_net_u32 (sa0->spi);
375 esp0->seq = clib_host_to_net_u32 (sa0->seq);
380 /* in tunnel mode send it back to FIB */
381 priv->next = DPDK_CRYPTO_INPUT_NEXT_IP6_LOOKUP;
384 sizeof (ip6_header_t) + sizeof (esp_header_t) + iv_size;
385 vlib_buffer_advance (b0, -adv);
386 ih6_0 = (ip6_and_esp_header_t *) ih0;
387 oh6_0 = vlib_buffer_get_current (b0);
389 next_hdr_type = (is_ip6 ?
390 IP_PROTOCOL_IPV6 : IP_PROTOCOL_IP_IN_IP);
392 oh6_0->ip6.ip_version_traffic_class_and_flow_label =
393 ih6_0->ip6.ip_version_traffic_class_and_flow_label;
395 oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
396 oh6_0->ip6.hop_limit = 254;
397 oh6_0->ip6.src_address.as_u64[0] =
398 sa0->tunnel_src_addr.ip6.as_u64[0];
399 oh6_0->ip6.src_address.as_u64[1] =
400 sa0->tunnel_src_addr.ip6.as_u64[1];
401 oh6_0->ip6.dst_address.as_u64[0] =
402 sa0->tunnel_dst_addr.ip6.as_u64[0];
403 oh6_0->ip6.dst_address.as_u64[1] =
404 sa0->tunnel_dst_addr.ip6.as_u64[1];
406 oh6_0->esp.spi = clib_host_to_net_u32 (sa0->spi);
407 oh6_0->esp.seq = clib_host_to_net_u32 (sa0->seq);
410 vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
412 else /* transport mode */
414 priv->next = DPDK_CRYPTO_INPUT_NEXT_INTERFACE_OUTPUT;
415 rewrite_len = vnet_buffer (b0)->ip.save_rewrite_length;
416 u16 adv = sizeof (esp_header_t) + iv_size + udp_encap_adv;
417 vlib_buffer_advance (b0, -adv - rewrite_len);
418 u8 *src = ((u8 *) ih0) - rewrite_len;
419 u8 *dst = vlib_buffer_get_current (b0);
420 oh0 = vlib_buffer_get_current (b0) + rewrite_len;
424 orig_sz -= sizeof (ip6_header_t);
425 ih6_0 = (ip6_and_esp_header_t *) ih0;
426 next_hdr_type = ih6_0->ip6.protocol;
427 memmove (dst, src, rewrite_len + sizeof (ip6_header_t));
428 oh6_0 = (ip6_and_esp_header_t *) oh0;
429 oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
434 u16 ip_size = ip4_header_bytes (&ih0->ip4);
436 next_hdr_type = ih0->ip4.protocol;
437 memmove (dst, src, rewrite_len + ip_size);
438 oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
439 esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
440 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
442 oh0->ip4.protocol = IP_PROTOCOL_UDP;
443 esp0 = (esp_header_t *)
444 (((u8 *) oh0) + ip_size + udp_encap_adv);
448 oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
449 esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
452 esp0->spi = clib_host_to_net_u32 (sa0->spi);
453 esp0->seq = clib_host_to_net_u32 (sa0->seq);
456 if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0)
458 ouh0->udp.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
459 ouh0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
460 ouh0->udp.checksum = 0;
462 ASSERT (is_pow2 (cipher_alg->boundary));
463 u16 mask = cipher_alg->boundary - 1;
464 u16 pad_payload_len = ((orig_sz + 2) + mask) & ~mask;
465 u8 pad_bytes = pad_payload_len - 2 - orig_sz;
468 vlib_buffer_put_uninit (b0, pad_bytes + 2 + trunc_size);
470 /* The extra pad bytes would be overwritten by the digest */
472 clib_memcpy_fast (padding, pad_data, 16);
474 f0 = (esp_footer_t *) (padding + pad_bytes);
475 f0->pad_length = pad_bytes;
476 f0->next_header = next_hdr_type;
478 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
480 u16 len = b0->current_length - sizeof (ip6_header_t);
481 oh6_0->ip6.payload_length =
482 clib_host_to_net_u16 (len - rewrite_len);
487 clib_host_to_net_u16 (b0->current_length - rewrite_len);
488 oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
489 if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0)
492 clib_host_to_net_u16 (clib_net_to_host_u16
494 ip4_header_bytes (&ouh0->ip4));
498 b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
500 /* mbuf packet starts at ESP header */
501 mb0->data_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
502 mb0->pkt_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
503 mb0->data_off = ((void *) esp0) - mb0->buf_addr;
505 u32 cipher_off, cipher_len, auth_len = 0;
508 u8 *digest = vlib_buffer_get_tail (b0) - trunc_size;
510 mb0->buf_physaddr + digest - ((u8 *) mb0->buf_addr);
512 if (!is_aead && cipher_alg->alg == RTE_CRYPTO_CIPHER_AES_CBC)
514 cipher_off = sizeof (esp_header_t);
515 cipher_len = iv_size + pad_payload_len;
519 u32 *esp_iv = (u32 *) (esp0 + 1);
520 esp_iv[0] = sa0->seq;
521 esp_iv[1] = sa0->seq_hi;
523 cipher_off = sizeof (esp_header_t) + iv_size;
524 cipher_len = pad_payload_len;
529 aad = (u32 *) priv->aad;
530 aad[0] = clib_host_to_net_u32 (sa0->spi);
531 aad[1] = clib_host_to_net_u32 (sa0->seq);
533 /* aad[3] should always be 0 */
534 if (PREDICT_FALSE (ipsec_sa_is_set_USE_ESN (sa0)))
535 aad[2] = clib_host_to_net_u32 (sa0->seq_hi);
542 vlib_buffer_get_tail (b0) - ((u8 *) esp0) - trunc_size;
543 if (ipsec_sa_is_set_USE_ESN (sa0))
545 u32 *_digest = (u32 *) digest;
546 _digest[0] = clib_host_to_net_u32 (sa0->seq_hi);
551 crypto_op_setup (is_aead, mb0, op, session, cipher_off, cipher_len,
552 0, auth_len, (u8 *) aad, digest, digest_paddr);
555 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
557 esp_encrypt_trace_t *tr =
558 vlib_add_trace (vm, node, b0, sizeof (*tr));
559 tr->crypto_alg = sa0->crypto_alg;
560 tr->integ_alg = sa0->integ_alg;
561 u8 *p = vlib_buffer_get_current (b0);
562 if (!ipsec_sa_is_set_IS_TUNNEL (sa0))
563 p += vnet_buffer (b0)->ip.save_rewrite_length;
564 clib_memcpy_fast (tr->packet_data, p, sizeof (tr->packet_data));
567 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
571 vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index,
572 ESP_ENCRYPT_ERROR_RX_PKTS,
573 from_frame->n_vectors);
575 crypto_enqueue_ops (vm, cwm, dpdk_esp6_encrypt_node.index,
576 ESP_ENCRYPT_ERROR_ENQ_FAIL, numa, 1 /* encrypt */ );
580 vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index,
581 ESP_ENCRYPT_ERROR_RX_PKTS,
582 from_frame->n_vectors);
584 crypto_enqueue_ops (vm, cwm, dpdk_esp4_encrypt_node.index,
585 ESP_ENCRYPT_ERROR_ENQ_FAIL, numa, 1 /* encrypt */ );
588 crypto_free_ops (numa, ops, cwm->ops + from_frame->n_vectors - ops);
590 return from_frame->n_vectors;
593 VLIB_NODE_FN (dpdk_esp4_encrypt_node) (vlib_main_t * vm,
594 vlib_node_runtime_t * node,
595 vlib_frame_t * from_frame)
597 return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ , 0);
601 VLIB_REGISTER_NODE (dpdk_esp4_encrypt_node) = {
602 .name = "dpdk-esp4-encrypt",
603 .flags = VLIB_NODE_FLAG_IS_OUTPUT,
604 .vector_size = sizeof (u32),
605 .format_trace = format_esp_encrypt_trace,
606 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
607 .error_strings = esp_encrypt_error_strings,
611 [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
616 VLIB_NODE_FN (dpdk_esp6_encrypt_node) (vlib_main_t * vm,
617 vlib_node_runtime_t * node,
618 vlib_frame_t * from_frame)
620 return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ , 0);
624 VLIB_REGISTER_NODE (dpdk_esp6_encrypt_node) = {
625 .name = "dpdk-esp6-encrypt",
626 .flags = VLIB_NODE_FLAG_IS_OUTPUT,
627 .vector_size = sizeof (u32),
628 .format_trace = format_esp_encrypt_trace,
629 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
630 .error_strings = esp_encrypt_error_strings,
634 [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
639 VLIB_NODE_FN (dpdk_esp4_encrypt_tun_node) (vlib_main_t * vm,
640 vlib_node_runtime_t * node,
641 vlib_frame_t * from_frame)
643 return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ , 1);
647 VLIB_REGISTER_NODE (dpdk_esp4_encrypt_tun_node) = {
648 .name = "dpdk-esp4-encrypt-tun",
649 .flags = VLIB_NODE_FLAG_IS_OUTPUT,
650 .vector_size = sizeof (u32),
651 .format_trace = format_esp_encrypt_trace,
652 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
653 .error_strings = esp_encrypt_error_strings,
657 [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
661 VNET_FEATURE_INIT (dpdk_esp4_encrypt_tun_feat_node, static) =
663 .arc_name = "ip4-output",
664 .node_name = "dpdk-esp4-encrypt-tun",
665 .runs_before = VNET_FEATURES ("adj-midchain-tx"),
669 VLIB_NODE_FN (dpdk_esp6_encrypt_tun_node) (vlib_main_t * vm,
670 vlib_node_runtime_t * node,
671 vlib_frame_t * from_frame)
673 return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ , 1);
677 VLIB_REGISTER_NODE (dpdk_esp6_encrypt_tun_node) = {
678 .name = "dpdk-esp6-encrypt-tun",
679 .flags = VLIB_NODE_FLAG_IS_OUTPUT,
680 .vector_size = sizeof (u32),
681 .format_trace = format_esp_encrypt_trace,
682 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
683 .error_strings = esp_encrypt_error_strings,
687 [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
691 VNET_FEATURE_INIT (dpdk_esp6_encrypt_tun_feat_node, static) =
693 .arc_name = "ip6-output",
694 .node_name = "dpdk-esp6-encrypt-tun",
695 .runs_before = VNET_FEATURES ("adj-midchain-tx"),
700 * fd.io coding-style-patch-verification: ON
703 * eval: (c-set-style "gnu")