blob: 16bca1da5369c8cc3d2fc8e622ec5984b54a4f36 [file] [log] [blame]
Ed Warnickecb9cada2015-12-08 15:45:58 -07001/*
2 * esp_encrypt.c : IPSec ESP encrypt node
3 *
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:
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
Damjan Marion91f17dc2019-03-18 18:59:25 +010022#include <vnet/crypto/crypto.h>
23
Ed Warnickecb9cada2015-12-08 15:45:58 -070024#include <vnet/ipsec/ipsec.h>
Neale Ranns28287212019-12-16 00:53:11 +000025#include <vnet/ipsec/ipsec_tun.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070026#include <vnet/ipsec/esp.h>
Neale Ranns041add72020-01-02 04:06:10 +000027#include <vnet/tunnel/tunnel_dp.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070028
Neale Ranns4a58e492020-12-21 13:19:10 +000029#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")
Ed Warnickecb9cada2015-12-08 15:45:58 -070037
38#define _(v, s) ESP_ENCRYPT_NEXT_##v,
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -070039typedef enum
40{
Ed Warnickecb9cada2015-12-08 15:45:58 -070041 foreach_esp_encrypt_next
42#undef _
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -070043 ESP_ENCRYPT_N_NEXT,
Ed Warnickecb9cada2015-12-08 15:45:58 -070044} esp_encrypt_next_t;
45
Damjan Marionc59b9a22019-03-19 15:38:40 +010046#define foreach_esp_encrypt_error \
47 _(RX_PKTS, "ESP pkts received") \
Fan Zhangf5395782020-04-29 14:00:03 +010048 _(POST_RX_PKTS, "ESP-post pkts received") \
Damjan Marionc59b9a22019-03-19 15:38:40 +010049 _(SEQ_CYCLED, "sequence number cycled (packet dropped)") \
50 _(CRYPTO_ENGINE_ERROR, "crypto engine error (packet dropped)") \
Fan Zhangf5395782020-04-29 14:00:03 +010051 _(CRYPTO_QUEUE_FULL, "crypto queue full (packet dropped)") \
Filip Tehlarefcad1a2020-02-04 09:36:04 +000052 _(NO_BUFFERS, "no buffers (packet dropped)") \
Ed Warnickecb9cada2015-12-08 15:45:58 -070053
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -070054typedef enum
55{
Ed Warnickecb9cada2015-12-08 15:45:58 -070056#define _(sym,str) ESP_ENCRYPT_ERROR_##sym,
57 foreach_esp_encrypt_error
58#undef _
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -070059 ESP_ENCRYPT_N_ERROR,
Ed Warnickecb9cada2015-12-08 15:45:58 -070060} esp_encrypt_error_t;
61
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -070062static char *esp_encrypt_error_strings[] = {
Ed Warnickecb9cada2015-12-08 15:45:58 -070063#define _(sym,string) string,
64 foreach_esp_encrypt_error
65#undef _
66};
67
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -070068typedef struct
69{
Neale Ranns8d7c5022019-02-06 01:41:05 -080070 u32 sa_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -070071 u32 spi;
72 u32 seq;
Neale Ranns6afaae12019-07-17 15:07:14 +000073 u32 sa_seq_hi;
Klement Sekera4b089f22018-04-17 18:04:57 +020074 u8 udp_encap;
Ed Warnickecb9cada2015-12-08 15:45:58 -070075 ipsec_crypto_alg_t crypto_alg;
76 ipsec_integ_alg_t integ_alg;
77} esp_encrypt_trace_t;
78
Fan Zhangf5395782020-04-29 14:00:03 +010079typedef struct
80{
81 u32 next_index;
82} esp_encrypt_post_trace_t;
83
Ed Warnickecb9cada2015-12-08 15:45:58 -070084/* packet trace format function */
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -070085static u8 *
86format_esp_encrypt_trace (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -070087{
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 *);
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -070090 esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
Ed Warnickecb9cada2015-12-08 15:45:58 -070091
Guillaume Solignac8f818cc2019-05-15 12:02:33 +020092 s =
93 format (s,
Neale Ranns6afaae12019-07-17 15:07:14 +000094 "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,
Guillaume Solignac8f818cc2019-05-15 12:02:33 +020097 t->crypto_alg, format_ipsec_integ_alg, t->integ_alg,
98 t->udp_encap ? " udp-encap-enabled" : "");
Ed Warnickecb9cada2015-12-08 15:45:58 -070099 return s;
100}
101
Fan Zhangf5395782020-04-29 14:00:03 +0100102static u8 *
103format_esp_post_encrypt_trace (u8 * s, va_list * args)
104{
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 *);
108
109 s = format (s, "esp-post: next node index %u", t->next_index);
110 return s;
111}
112
Damjan Marionc59b9a22019-03-19 15:38:40 +0100113/* pad packet in input buffer */
114static_always_inline u8 *
Filip Tehlare4e8c6b2020-02-13 07:49:30 +0000115esp_add_footer_and_icv (vlib_main_t * vm, vlib_buffer_t ** last,
Christian Hoppsfb7e7ed2019-11-03 07:02:15 -0500116 u8 esp_align, u8 icv_sz,
Filip Tehlar8cdb1a02019-11-18 22:21:37 +0000117 u16 * next, vlib_node_runtime_t * node,
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000118 u16 buffer_data_size, uword total_len)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700119{
Damjan Marionc59b9a22019-03-19 15:38:40 +0100120 static const u8 pad_data[ESP_MAX_BLOCK_SIZE] = {
121 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
Milan Lenco7885c742020-08-20 13:23:09 +0200122 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00,
Damjan Marionc59b9a22019-03-19 15:38:40 +0100123 };
Ed Warnickecb9cada2015-12-08 15:45:58 -0700124
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000125 u16 min_length = total_len + sizeof (esp_footer_t);
Christian Hoppsfb7e7ed2019-11-03 07:02:15 -0500126 u16 new_length = round_pow2 (min_length, esp_align);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100127 u8 pad_bytes = new_length - min_length;
Filip Tehlare4e8c6b2020-02-13 07:49:30 +0000128 esp_footer_t *f = (esp_footer_t *) (vlib_buffer_get_current (last[0]) +
129 last[0]->current_length + pad_bytes);
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000130 u16 tail_sz = sizeof (esp_footer_t) + pad_bytes + icv_sz;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700131
Filip Tehlare4e8c6b2020-02-13 07:49:30 +0000132 if (last[0]->current_length + tail_sz > buffer_data_size)
Filip Tehlar8cdb1a02019-11-18 22:21:37 +0000133 {
Filip Tehlare4e8c6b2020-02-13 07:49:30 +0000134 u32 tmp_bi = 0;
135 if (vlib_buffer_alloc (vm, &tmp_bi, 1) != 1)
136 return 0;
Filip Tehlarc2c1bfd2020-02-13 07:49:30 +0000137
Filip Tehlare4e8c6b2020-02-13 07:49:30 +0000138 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;
143 last[0] = tmp;
144 }
145 else
146 last[0]->current_length += tail_sz;
147
148 f->pad_length = pad_bytes;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100149 if (pad_bytes)
Benoît Ganne4505f012019-12-07 09:14:27 -0700150 {
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);
154 }
Damjan Marionc59b9a22019-03-19 15:38:40 +0100155
Damjan Marionc59b9a22019-03-19 15:38:40 +0100156 return &f->next_header;
157}
158
159static_always_inline void
160esp_update_ip4_hdr (ip4_header_t * ip4, u16 len, int is_transport, int is_udp)
161{
Neale Ranns1b582b82019-04-18 19:49:13 -0700162 ip_csum_t sum;
163 u16 old_len;
164
165 len = clib_net_to_host_u16 (len);
166 old_len = ip4->length;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100167
168 if (is_transport)
169 {
170 u8 prot = is_udp ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100171
Neale Ranns1b582b82019-04-18 19:49:13 -0700172 sum = ip_csum_update (ip4->checksum, ip4->protocol,
173 prot, ip4_header_t, protocol);
174 ip4->protocol = prot;
175
176 sum = ip_csum_update (sum, old_len, len, ip4_header_t, length);
177 }
178 else
179 sum = ip_csum_update (ip4->checksum, old_len, len, ip4_header_t, length);
180
181 ip4->length = len;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100182 ip4->checksum = ip_csum_fold (sum);
183}
184
185static_always_inline void
186esp_fill_udp_hdr (ipsec_sa_t * sa, udp_header_t * udp, u16 len)
187{
188 clib_memcpy_fast (udp, &sa->udp_hdr, sizeof (udp_header_t));
189 udp->length = clib_net_to_host_u16 (len);
190}
191
192static_always_inline u8
193ext_hdr_is_pre_esp (u8 nexthdr)
194{
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,
200 };
201
202 return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr));
203#else
204 return ((nexthdr ^ IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
205 (nexthdr ^ IP_PROTOCOL_IPV6_ROUTE) |
206 (nexthdr ^ IP_PROTOCOL_IPV6_FRAGMENTATION) != 0);
207#endif
208}
209
210static_always_inline u8
Neale Ranns02950402019-12-20 00:54:57 +0000211esp_get_ip6_hdr_len (ip6_header_t * ip6, ip6_ext_header_t ** ext_hdr)
Damjan Marionc59b9a22019-03-19 15:38:40 +0100212{
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 */
Damjan Marionc59b9a22019-03-19 15:38:40 +0100215 u8 len = sizeof (ip6_header_t);
216 ip6_ext_header_t *p;
217
218 /* if next packet doesn't have ext header */
219 if (ext_hdr_is_pre_esp (ip6->protocol) == 0)
Neale Ranns02950402019-12-20 00:54:57 +0000220 {
221 *ext_hdr = NULL;
222 return len;
223 }
Damjan Marionc59b9a22019-03-19 15:38:40 +0100224
225 p = (void *) (ip6 + 1);
226 len += ip6_ext_header_len (p);
227
228 while (ext_hdr_is_pre_esp (p->next_hdr))
229 {
230 len += ip6_ext_header_len (p);
231 p = ip6_ext_next_header (p);
232 }
233
Neale Ranns02950402019-12-20 00:54:57 +0000234 *ext_hdr = p;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100235 return len;
236}
237
Damjan Marionc59b9a22019-03-19 15:38:40 +0100238static_always_inline void
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000239esp_process_chained_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
240 vnet_crypto_op_t * ops, vlib_buffer_t * b[],
Neale Rannsb1fd80f2020-05-12 13:33:56 +0000241 u16 * nexts, vnet_crypto_op_chunk_t * chunks,
242 u16 drop_next)
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000243{
244 u32 n_fail, n_ops = vec_len (ops);
245 vnet_crypto_op_t *op = ops;
246
247 if (n_ops == 0)
248 return;
249
250 n_fail = n_ops - vnet_crypto_process_chained_ops (vm, op, chunks, n_ops);
251
252 while (n_fail)
253 {
254 ASSERT (op - ops < n_ops);
255
256 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
257 {
258 u32 bi = op->user_data;
259 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
Neale Rannsb1fd80f2020-05-12 13:33:56 +0000260 nexts[bi] = drop_next;
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000261 n_fail--;
262 }
263 op++;
264 }
265}
266
267static_always_inline void
Damjan Marionc59b9a22019-03-19 15:38:40 +0100268esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
Neale Rannsb1fd80f2020-05-12 13:33:56 +0000269 vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts,
270 u16 drop_next)
Damjan Marionc59b9a22019-03-19 15:38:40 +0100271{
272 u32 n_fail, n_ops = vec_len (ops);
273 vnet_crypto_op_t *op = ops;
274
275 if (n_ops == 0)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700276 return;
277
Damjan Marionc59b9a22019-03-19 15:38:40 +0100278 n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700279
Damjan Marionc59b9a22019-03-19 15:38:40 +0100280 while (n_fail)
281 {
282 ASSERT (op - ops < n_ops);
283
284 if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
285 {
286 u32 bi = op->user_data;
287 b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
Neale Rannsb1fd80f2020-05-12 13:33:56 +0000288 nexts[bi] = drop_next;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100289 n_fail--;
290 }
291 op++;
292 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700293}
294
Fan Zhangf5395782020-04-29 14:00:03 +0100295static_always_inline u32
296esp_encrypt_chain_crypto (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
297 ipsec_sa_t * sa0, vlib_buffer_t * b,
298 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
299 u32 start_len, u16 * n_ch)
300{
301 vnet_crypto_op_chunk_t *ch;
302 vlib_buffer_t *cb = b;
303 u32 n_chunks = 1;
304 u32 total_len;
305 vec_add2 (ptd->chunks, ch, 1);
306 total_len = ch->len = start_len;
307 ch->src = ch->dst = start;
308 cb = vlib_get_buffer (vm, cb->next_buffer);
309
310 while (1)
311 {
312 vec_add2 (ptd->chunks, ch, 1);
313 n_chunks += 1;
314 if (lb == cb)
315 total_len += ch->len = cb->current_length - icv_sz;
316 else
317 total_len += ch->len = cb->current_length;
318 ch->src = ch->dst = vlib_buffer_get_current (cb);
319
320 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
321 break;
322
323 cb = vlib_get_buffer (vm, cb->next_buffer);
324 }
325
326 if (n_ch)
327 *n_ch = n_chunks;
328
329 return total_len;
330}
331
332static_always_inline u32
333esp_encrypt_chain_integ (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
334 ipsec_sa_t * sa0, vlib_buffer_t * b,
335 vlib_buffer_t * lb, u8 icv_sz, u8 * start,
336 u32 start_len, u8 * digest, u16 * n_ch)
337{
338 vnet_crypto_op_chunk_t *ch;
339 vlib_buffer_t *cb = b;
340 u32 n_chunks = 1;
341 u32 total_len;
342 vec_add2 (ptd->chunks, ch, 1);
343 total_len = ch->len = start_len;
344 ch->src = start;
345 cb = vlib_get_buffer (vm, cb->next_buffer);
346
347 while (1)
348 {
349 vec_add2 (ptd->chunks, ch, 1);
350 n_chunks += 1;
351 if (lb == cb)
352 {
353 total_len += ch->len = cb->current_length - icv_sz;
354 if (ipsec_sa_is_set_USE_ESN (sa0))
355 {
356 u32 seq_hi = clib_net_to_host_u32 (sa0->seq_hi);
357 clib_memcpy_fast (digest, &seq_hi, sizeof (seq_hi));
358 ch->len += sizeof (seq_hi);
359 total_len += sizeof (seq_hi);
360 }
361 }
362 else
363 total_len += ch->len = cb->current_length;
364 ch->src = vlib_buffer_get_current (cb);
365
366 if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
367 break;
368
369 cb = vlib_get_buffer (vm, cb->next_buffer);
370 }
371
372 if (n_ch)
373 *n_ch = n_chunks;
374
375 return total_len;
376}
377
378always_inline void
Benoît Ganne490b9272021-01-22 18:03:09 +0100379esp_prepare_sync_op (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
380 vnet_crypto_op_t **crypto_ops,
381 vnet_crypto_op_t **integ_ops, ipsec_sa_t *sa0,
382 u8 *payload, u16 payload_len, u8 iv_sz, u8 icv_sz,
383 vlib_buffer_t **bufs, vlib_buffer_t **b,
384 vlib_buffer_t *lb, u32 hdr_len, esp_header_t *esp)
Fan Zhangf5395782020-04-29 14:00:03 +0100385{
386 if (sa0->crypto_enc_op_id)
387 {
388 vnet_crypto_op_t *op;
389 vec_add2_aligned (crypto_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
390 vnet_crypto_op_init (op, sa0->crypto_enc_op_id);
391
392 op->src = op->dst = payload;
393 op->key_index = sa0->crypto_key_index;
394 op->len = payload_len - icv_sz;
395 op->user_data = b - bufs;
396
Benoît Ganne490b9272021-01-22 18:03:09 +0100397 if (ipsec_sa_is_set_IS_CTR (sa0))
Fan Zhangf5395782020-04-29 14:00:03 +0100398 {
Benoît Ganne490b9272021-01-22 18:03:09 +0100399 ASSERT (sizeof (u64) == iv_sz);
400 /* construct nonce in a scratch space in front of the IP header */
401 esp_ctr_nonce_t *nonce =
402 (esp_ctr_nonce_t *) (payload - sizeof (u64) - hdr_len -
403 sizeof (*nonce));
404 u64 *pkt_iv = (u64 *) (payload - sizeof (u64));
Fan Zhangf5395782020-04-29 14:00:03 +0100405
Benoît Ganne490b9272021-01-22 18:03:09 +0100406 if (ipsec_sa_is_set_IS_AEAD (sa0))
407 {
408 /* constuct aad in a scratch space in front of the nonce */
409 op->aad = (u8 *) nonce - sizeof (esp_aead_t);
410 op->aad_len = esp_aad_fill (op->aad, esp, sa0);
411 op->tag = payload + op->len;
412 op->tag_len = 16;
413 }
414 else
415 {
416 nonce->ctr = clib_host_to_net_u32 (1);
417 }
Fan Zhangf5395782020-04-29 14:00:03 +0100418
Fan Zhangf5395782020-04-29 14:00:03 +0100419 nonce->salt = sa0->salt;
Benoît Ganne490b9272021-01-22 18:03:09 +0100420 nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa0->ctr_iv_counter++);
Fan Zhangf5395782020-04-29 14:00:03 +0100421 op->iv = (u8 *) nonce;
422 }
423 else
424 {
425 op->iv = payload - iv_sz;
426 op->flags = VNET_CRYPTO_OP_FLAG_INIT_IV;
427 }
428
429 if (lb != b[0])
430 {
431 /* is chained */
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);
437 }
438 }
439
440 if (sa0->integ_op_id)
441 {
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;
451
452 if (lb != b[0])
453 {
454 /* is chained */
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;
458
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,
463 &op->n_chunks);
464 }
465 else if (ipsec_sa_is_set_USE_ESN (sa0))
466 {
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);
470 }
471 }
472}
473
474static_always_inline int
475esp_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,
Fan Zhang18f0e312020-10-19 13:08:34 +0100479 u8 iv_sz, u8 icv_sz, u32 bi, u16 next, u32 hdr_len,
Fan Zhangf5395782020-04-29 14:00:03 +0100480 u16 async_next, vlib_buffer_t * lb)
481{
482 esp_post_data_t *post = esp_post_data (b);
483 u8 *tag, *iv, *aad = 0;
484 u8 flag = 0;
485 u32 key_index;
486 i16 crypto_start_offset, integ_start_offset = 0;
487 u16 crypto_total_len, integ_total_len;
488
Fan Zhang18f0e312020-10-19 13:08:34 +0100489 post->next_index = next;
Fan Zhangf5395782020-04-29 14:00:03 +0100490
491 /* crypto */
492 crypto_start_offset = payload - b->data;
493 crypto_total_len = integ_total_len = payload_len - icv_sz;
494 tag = payload + crypto_total_len;
495
Fan Zhangf5395782020-04-29 14:00:03 +0100496 key_index = sa->linked_key_index;
497
Benoît Ganne490b9272021-01-22 18:03:09 +0100498 if (ipsec_sa_is_set_IS_CTR (sa))
Fan Zhangf5395782020-04-29 14:00:03 +0100499 {
Benoît Ganne490b9272021-01-22 18:03:09 +0100500 ASSERT (sizeof (u64) == iv_sz);
501 /* construct nonce in a scratch space in front of the IP header */
502 esp_ctr_nonce_t *nonce = (esp_ctr_nonce_t *) (payload - sizeof (u64) -
503 hdr_len - sizeof (*nonce));
504 u64 *pkt_iv = (u64 *) (payload - sizeof (u64));
505
506 if (ipsec_sa_is_set_IS_AEAD (sa))
507 {
508 /* constuct aad in a scratch space in front of the nonce */
509 aad = (u8 *) nonce - sizeof (esp_aead_t);
510 esp_aad_fill (aad, esp, sa);
511 key_index = sa->crypto_key_index;
512 }
513 else
514 {
515 nonce->ctr = clib_host_to_net_u32 (1);
516 }
517
518 nonce->salt = sa->salt;
519 nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa->ctr_iv_counter++);
520 iv = (u8 *) nonce;
Fan Zhangf5395782020-04-29 14:00:03 +0100521 }
Benoît Ganne490b9272021-01-22 18:03:09 +0100522 else
Fan Zhangf5395782020-04-29 14:00:03 +0100523 {
Benoît Ganne490b9272021-01-22 18:03:09 +0100524 iv = payload - iv_sz;
525 flag |= VNET_CRYPTO_OP_FLAG_INIT_IV;
Fan Zhangf5395782020-04-29 14:00:03 +0100526 }
527
Benoît Ganne490b9272021-01-22 18:03:09 +0100528 if (lb != b)
529 {
530 /* chain */
531 flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
532 tag = vlib_buffer_get_tail (lb) - icv_sz;
533 crypto_total_len = esp_encrypt_chain_crypto (vm, ptd, sa, b, lb, icv_sz,
534 payload, payload_len, 0);
535 }
536
537 if (sa->integ_op_id)
538 {
539 integ_start_offset = crypto_start_offset - iv_sz - sizeof (esp_header_t);
540 integ_total_len += iv_sz + sizeof (esp_header_t);
541
542 if (b != lb)
543 {
544 integ_total_len = esp_encrypt_chain_integ (
545 vm, ptd, sa, b, lb, icv_sz,
546 payload - iv_sz - sizeof (esp_header_t),
547 payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
548 }
549 else if (ipsec_sa_is_set_USE_ESN (sa))
550 {
551 u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
552 clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
553 integ_total_len += sizeof (seq_hi);
554 }
555 }
556
Fan Zhangf5395782020-04-29 14:00:03 +0100557 return vnet_crypto_async_add_to_frame (vm, async_frame, key_index,
558 crypto_total_len,
559 integ_total_len - crypto_total_len,
560 crypto_start_offset,
561 integ_start_offset, bi, async_next,
562 iv, tag, aad, flag);
563}
564
Klement Sekerabe5a5dd2018-10-09 16:05:48 +0200565always_inline uword
Neale Ranns4a58e492020-12-21 13:19:10 +0000566esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
567 vlib_frame_t *frame, vnet_link_t lt, int is_tun,
Fan Zhangf5395782020-04-29 14:00:03 +0100568 u16 async_next)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700569{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700570 ipsec_main_t *im = &ipsec_main;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100571 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;
Damjan Marionc98275f2019-03-06 14:05:01 +0100575 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100576 u32 thread_index = vm->thread_index;
577 u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
578 u32 current_sa_index = ~0, current_sa_packets = 0;
579 u32 current_sa_bytes = 0, spi = 0;
Christian Hoppsfb7e7ed2019-11-03 07:02:15 -0500580 u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100581 ipsec_sa_t *sa0 = 0;
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000582 vlib_buffer_t *lb;
583 vnet_crypto_op_t **crypto_ops = &ptd->crypto_ops;
584 vnet_crypto_op_t **integ_ops = &ptd->integ_ops;
Fan Zhangf5395782020-04-29 14:00:03 +0100585 vnet_crypto_async_frame_t *async_frame = 0;
586 int is_async = im->async_mode;
587 vnet_crypto_async_op_id_t last_async_op = ~0;
Neale Ranns4a58e492020-12-21 13:19:10 +0000588 u16 drop_next =
589 (lt == VNET_LINK_IP6 ? ESP_ENCRYPT_NEXT_DROP6 :
590 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_DROP4 :
591 ESP_ENCRYPT_NEXT_DROP_MPLS));
592 u16 handoff_next = (lt == VNET_LINK_IP6 ?
593 ESP_ENCRYPT_NEXT_HANDOFF6 :
594 (lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_HANDOFF4 :
595 ESP_ENCRYPT_NEXT_HANDOFF_MPLS));
Fan Zhang18f0e312020-10-19 13:08:34 +0100596 u16 n_async_drop = 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700597
Damjan Marionc59b9a22019-03-19 15:38:40 +0100598 vlib_get_buffers (vm, from, b, n_left);
Fan Zhangf5395782020-04-29 14:00:03 +0100599 if (!is_async)
600 {
601 vec_reset_length (ptd->crypto_ops);
602 vec_reset_length (ptd->integ_ops);
603 vec_reset_length (ptd->chained_crypto_ops);
604 vec_reset_length (ptd->chained_integ_ops);
605 }
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000606 vec_reset_length (ptd->chunks);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100607
608 while (n_left > 0)
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -0700609 {
Zhiyong Yang1cff6432019-04-30 05:33:53 -0400610 u32 sa_index0;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100611 dpo_id_t *dpo;
612 esp_header_t *esp;
613 u8 *payload, *next_hdr_ptr;
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000614 u16 payload_len, payload_len_total, n_bufs;
Neale Ranns4ec36c52020-03-31 09:21:29 -0400615 u32 hdr_len;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700616
Damjan Marionc59b9a22019-03-19 15:38:40 +0100617 if (n_left > 2)
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -0700618 {
Damjan Marionc59b9a22019-03-19 15:38:40 +0100619 u8 *p;
620 vlib_prefetch_buffer_header (b[2], LOAD);
621 p = vlib_buffer_get_current (b[1]);
622 CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
623 p -= CLIB_CACHE_LINE_BYTES;
624 CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
Neale Ranns123b5eb2020-10-16 14:03:55 +0000625 /* speculate that the trailer goes in the first buffer */
626 CLIB_PREFETCH (vlib_buffer_get_tail (b[1]),
627 CLIB_CACHE_LINE_BYTES, LOAD);
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -0700628 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700629
Neale Ranns25edf142019-03-22 08:12:48 +0000630 if (is_tun)
631 {
632 /* we are on a ipsec tunnel's feature arc */
Neale Ranns28287212019-12-16 00:53:11 +0000633 vnet_buffer (b[0])->ipsec.sad_index =
634 sa_index0 = ipsec_tun_protect_get_sa_out
635 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
Neale Ranns25edf142019-03-22 08:12:48 +0000636 }
637 else
638 sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
639
640 if (sa_index0 != current_sa_index)
Damjan Marionc59b9a22019-03-19 15:38:40 +0100641 {
Damjan Marion21f265f2019-06-05 15:45:50 +0200642 if (current_sa_packets)
643 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
644 current_sa_index,
645 current_sa_packets,
646 current_sa_bytes);
647 current_sa_packets = current_sa_bytes = 0;
648
Neale Rannsc5fe57d2021-02-25 16:01:28 +0000649 sa0 = ipsec_sa_get (sa_index0);
Neale Ranns123b5eb2020-10-16 14:03:55 +0000650
651 /* fetch the second cacheline ASAP */
652 CLIB_PREFETCH (sa0->cacheline1, CLIB_CACHE_LINE_BYTES, LOAD);
653
Damjan Marionc59b9a22019-03-19 15:38:40 +0100654 current_sa_index = sa_index0;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100655 spi = clib_net_to_host_u32 (sa0->spi);
Christian Hoppsfb7e7ed2019-11-03 07:02:15 -0500656 esp_align = sa0->esp_block_align;
Damjan Marion7c22ff72019-04-04 12:25:44 +0200657 icv_sz = sa0->integ_icv_size;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100658 iv_sz = sa0->crypto_iv_size;
Fan Zhangf5395782020-04-29 14:00:03 +0100659
660 /* submit frame when op_id is different then the old one */
661 if (is_async && sa0->crypto_async_enc_op_id != last_async_op)
662 {
663 if (async_frame && async_frame->n_elts)
664 {
Fan Zhang18f0e312020-10-19 13:08:34 +0100665 if (vnet_crypto_async_submit_open_frame (vm, async_frame))
666 esp_async_recycle_failed_submit (async_frame, b, from,
667 nexts, &n_async_drop,
668 drop_next,
669 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR);
Fan Zhangf5395782020-04-29 14:00:03 +0100670 }
671 async_frame =
672 vnet_crypto_async_get_frame (vm, sa0->crypto_async_enc_op_id);
673 last_async_op = sa0->crypto_async_enc_op_id;
674 }
Damjan Marionc59b9a22019-03-19 15:38:40 +0100675 }
676
Neale Ranns1a52d372021-02-04 11:33:32 +0000677 if (PREDICT_FALSE (~0 == sa0->thread_index))
Neale Rannsf62a8c02019-04-02 08:13:33 +0000678 {
679 /* this is the first packet to use this SA, claim the SA
680 * for this thread. this could happen simultaneously on
681 * another thread */
Neale Ranns1a52d372021-02-04 11:33:32 +0000682 clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
Neale Rannsf62a8c02019-04-02 08:13:33 +0000683 ipsec_sa_assign_thread (thread_index));
684 }
685
Neale Ranns1a52d372021-02-04 11:33:32 +0000686 if (PREDICT_FALSE (thread_index != sa0->thread_index))
Neale Rannsf62a8c02019-04-02 08:13:33 +0000687 {
Neale Rannsaa7d7662021-02-10 08:42:49 +0000688 vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
Fan Zhang18f0e312020-10-19 13:08:34 +0100689 esp_set_next_index (is_async, from, nexts, from[b - bufs],
Neale Ranns4a58e492020-12-21 13:19:10 +0000690 &n_async_drop, handoff_next, next);
Neale Rannsf62a8c02019-04-02 08:13:33 +0000691 goto trace;
692 }
693
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000694 lb = b[0];
695 n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
696 if (n_bufs == 0)
Damjan Marionc59b9a22019-03-19 15:38:40 +0100697 {
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000698 b[0]->error = node->errors[ESP_ENCRYPT_ERROR_NO_BUFFERS];
Fan Zhang18f0e312020-10-19 13:08:34 +0100699 esp_set_next_index (is_async, from, nexts, from[b - bufs],
700 &n_async_drop, drop_next, next);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100701 goto trace;
702 }
703
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000704 if (n_bufs > 1)
705 {
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000706 /* find last buffer in the chain */
707 while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
708 lb = vlib_get_buffer (vm, lb->next_buffer);
709 }
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000710
Damjan Marionc59b9a22019-03-19 15:38:40 +0100711 if (PREDICT_FALSE (esp_seq_advance (sa0)))
712 {
713 b[0]->error = node->errors[ESP_ENCRYPT_ERROR_SEQ_CYCLED];
Fan Zhang18f0e312020-10-19 13:08:34 +0100714 esp_set_next_index (is_async, from, nexts, from[b - bufs],
715 &n_async_drop, drop_next, next);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100716 goto trace;
717 }
718
719 /* space for IV */
720 hdr_len = iv_sz;
721
Damjan Mariond709cbc2019-03-26 13:16:42 +0100722 if (ipsec_sa_is_set_IS_TUNNEL (sa0))
Damjan Marionc59b9a22019-03-19 15:38:40 +0100723 {
724 payload = vlib_buffer_get_current (b[0]);
Christian Hoppsfb7e7ed2019-11-03 07:02:15 -0500725 next_hdr_ptr = esp_add_footer_and_icv (vm, &lb, esp_align, icv_sz,
Filip Tehlar8cdb1a02019-11-18 22:21:37 +0000726 next, node,
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000727 buffer_data_size,
728 vlib_buffer_length_in_chain
729 (vm, b[0]));
Filip Tehlar8cdb1a02019-11-18 22:21:37 +0000730 if (!next_hdr_ptr)
Filip Tehlare4e8c6b2020-02-13 07:49:30 +0000731 {
732 b[0]->error = node->errors[ESP_ENCRYPT_ERROR_NO_BUFFERS];
Fan Zhang18f0e312020-10-19 13:08:34 +0100733 esp_set_next_index (is_async, from, nexts, from[b - bufs],
734 &n_async_drop, drop_next, next);
Filip Tehlare4e8c6b2020-02-13 07:49:30 +0000735 goto trace;
736 }
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000737 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
Filip Tehlar8cdb1a02019-11-18 22:21:37 +0000738 payload_len = b[0]->current_length;
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000739 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100740
741 /* ESP header */
742 hdr_len += sizeof (*esp);
743 esp = (esp_header_t *) (payload - hdr_len);
744
745 /* optional UDP header */
Damjan Mariond709cbc2019-03-26 13:16:42 +0100746 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
Damjan Marionc98275f2019-03-06 14:05:01 +0100747 {
Damjan Marionc59b9a22019-03-19 15:38:40 +0100748 hdr_len += sizeof (udp_header_t);
749 esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000750 payload_len_total + hdr_len);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100751 }
752
753 /* IP header */
Damjan Mariond709cbc2019-03-26 13:16:42 +0100754 if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
Damjan Marionc59b9a22019-03-19 15:38:40 +0100755 {
756 ip6_header_t *ip6;
757 u16 len = sizeof (ip6_header_t);
758 hdr_len += len;
759 ip6 = (ip6_header_t *) (payload - hdr_len);
Neale Ranns041add72020-01-02 04:06:10 +0000760 clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
761
Neale Ranns4a58e492020-12-21 13:19:10 +0000762 if (VNET_LINK_IP6 == lt)
Neale Ranns041add72020-01-02 04:06:10 +0000763 {
764 *next_hdr_ptr = IP_PROTOCOL_IPV6;
765 tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
766 (const ip6_header_t *) payload,
767 ip6);
768 }
Neale Ranns4a58e492020-12-21 13:19:10 +0000769 else if (VNET_LINK_IP4 == lt)
Neale Ranns041add72020-01-02 04:06:10 +0000770 {
771 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
Neale Rannsa91cb452021-02-04 11:02:52 +0000772 tunnel_encap_fixup_4o6 (sa0->tunnel_flags, b[0],
773 (const ip4_header_t *) payload, ip6);
Neale Ranns041add72020-01-02 04:06:10 +0000774 }
Neale Ranns4a58e492020-12-21 13:19:10 +0000775 else if (VNET_LINK_MPLS == lt)
776 {
777 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
778 tunnel_encap_fixup_mplso6 (
Neale Rannsa91cb452021-02-04 11:02:52 +0000779 sa0->tunnel_flags, b[0],
780 (const mpls_unicast_header_t *) payload, ip6);
Neale Ranns4a58e492020-12-21 13:19:10 +0000781 }
782 else
783 ASSERT (0);
784
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000785 len = payload_len_total + hdr_len - len;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100786 ip6->payload_length = clib_net_to_host_u16 (len);
Neale Ranns45d6d832021-01-19 13:38:47 +0000787 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
Damjan Marionc98275f2019-03-06 14:05:01 +0100788 }
789 else
790 {
Damjan Marionc59b9a22019-03-19 15:38:40 +0100791 ip4_header_t *ip4;
792 u16 len = sizeof (ip4_header_t);
793 hdr_len += len;
794 ip4 = (ip4_header_t *) (payload - hdr_len);
Neale Ranns041add72020-01-02 04:06:10 +0000795 clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
796
Neale Ranns4a58e492020-12-21 13:19:10 +0000797 if (VNET_LINK_IP6 == lt)
Neale Ranns041add72020-01-02 04:06:10 +0000798 {
799 *next_hdr_ptr = IP_PROTOCOL_IPV6;
800 tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
801 (const ip6_header_t *)
802 payload, ip4);
803 }
Neale Ranns4a58e492020-12-21 13:19:10 +0000804 else if (VNET_LINK_IP4 == lt)
Neale Ranns041add72020-01-02 04:06:10 +0000805 {
806 *next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
807 tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
808 (const ip4_header_t *)
809 payload, ip4);
810 }
Neale Ranns4a58e492020-12-21 13:19:10 +0000811 else if (VNET_LINK_MPLS == lt)
812 {
813 *next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
814 tunnel_encap_fixup_mplso4_w_chksum (
815 sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
816 ip4);
817 }
818 else
819 ASSERT (0);
820
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000821 len = payload_len_total + hdr_len;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100822 esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
Damjan Marionc98275f2019-03-06 14:05:01 +0100823 }
Damjan Marionc98275f2019-03-06 14:05:01 +0100824
Neale Ranns72f2a3a2019-06-17 15:43:38 +0000825 dpo = &sa0->dpo;
Neale Ranns25edf142019-03-22 08:12:48 +0000826 if (!is_tun)
827 {
828 next[0] = dpo->dpoi_next_node;
829 vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
830 }
Neale Ranns4ec36c52020-03-31 09:21:29 -0400831 else
832 next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
Neale Ranns9ec846c2021-02-09 14:04:02 +0000833 b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
Damjan Marionc98275f2019-03-06 14:05:01 +0100834 }
Damjan Marionc59b9a22019-03-19 15:38:40 +0100835 else /* transport mode */
Damjan Marionc98275f2019-03-06 14:05:01 +0100836 {
Damjan Marionc59b9a22019-03-19 15:38:40 +0100837 u8 *l2_hdr, l2_len, *ip_hdr, ip_len;
Neale Ranns02950402019-12-20 00:54:57 +0000838 ip6_ext_header_t *ext_hdr;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100839 udp_header_t *udp = 0;
Alexander Chernavinb0d2eda2020-03-25 10:56:52 -0400840 u16 udp_len = 0;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100841 u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
Damjan Marionc98275f2019-03-06 14:05:01 +0100842
Neale Ranns4a58e492020-12-21 13:19:10 +0000843 ip_len =
844 (VNET_LINK_IP6 == lt ?
845 esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
846 ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
Damjan Marionc98275f2019-03-06 14:05:01 +0100847
Damjan Marionc59b9a22019-03-19 15:38:40 +0100848 vlib_buffer_advance (b[0], ip_len);
849 payload = vlib_buffer_get_current (b[0]);
Christian Hoppsfb7e7ed2019-11-03 07:02:15 -0500850 next_hdr_ptr = esp_add_footer_and_icv (vm, &lb, esp_align, icv_sz,
Filip Tehlar8cdb1a02019-11-18 22:21:37 +0000851 next, node,
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000852 buffer_data_size,
853 vlib_buffer_length_in_chain
854 (vm, b[0]));
Filip Tehlar8cdb1a02019-11-18 22:21:37 +0000855 if (!next_hdr_ptr)
Fan Zhang18f0e312020-10-19 13:08:34 +0100856 {
857 esp_set_next_index (is_async, from, nexts, from[b - bufs],
858 &n_async_drop, drop_next, next);
859 goto trace;
860 }
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000861
862 b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
Filip Tehlar8cdb1a02019-11-18 22:21:37 +0000863 payload_len = b[0]->current_length;
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000864 payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100865
866 /* ESP header */
867 hdr_len += sizeof (*esp);
868 esp = (esp_header_t *) (payload - hdr_len);
869
870 /* optional UDP header */
Damjan Mariond709cbc2019-03-26 13:16:42 +0100871 if (ipsec_sa_is_set_UDP_ENCAP (sa0))
Damjan Marionc98275f2019-03-06 14:05:01 +0100872 {
Damjan Marionc59b9a22019-03-19 15:38:40 +0100873 hdr_len += sizeof (udp_header_t);
874 udp = (udp_header_t *) (payload - hdr_len);
Damjan Marionc98275f2019-03-06 14:05:01 +0100875 }
876
Damjan Marionc59b9a22019-03-19 15:38:40 +0100877 /* IP header */
878 hdr_len += ip_len;
879 ip_hdr = payload - hdr_len;
880
881 /* L2 header */
Neale Rannsc87b66c2019-02-07 07:26:12 -0800882 if (!is_tun)
883 {
884 l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
885 hdr_len += l2_len;
886 l2_hdr = payload - hdr_len;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100887
Neale Rannsc87b66c2019-02-07 07:26:12 -0800888 /* copy l2 and ip header */
889 clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
890 }
891 else
892 l2_len = 0;
893
Neale Ranns4a58e492020-12-21 13:19:10 +0000894 if (VNET_LINK_IP6 == lt)
Damjan Marionc59b9a22019-03-19 15:38:40 +0100895 {
Neale Ranns02950402019-12-20 00:54:57 +0000896 ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
897 if (PREDICT_TRUE (NULL == ext_hdr))
898 {
899 *next_hdr_ptr = ip6->protocol;
900 ip6->protocol = IP_PROTOCOL_IPSEC_ESP;
901 }
902 else
903 {
904 *next_hdr_ptr = ext_hdr->next_hdr;
905 ext_hdr->next_hdr = IP_PROTOCOL_IPSEC_ESP;
906 }
Neale Rannsd207fd72019-04-18 17:18:12 -0700907 ip6->payload_length =
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000908 clib_host_to_net_u16 (payload_len_total + hdr_len - l2_len -
Neale Ranns02950402019-12-20 00:54:57 +0000909 sizeof (ip6_header_t));
Damjan Marionc59b9a22019-03-19 15:38:40 +0100910 }
Neale Ranns4a58e492020-12-21 13:19:10 +0000911 else if (VNET_LINK_IP4 == lt)
Damjan Marionc98275f2019-03-06 14:05:01 +0100912 {
Damjan Marionc59b9a22019-03-19 15:38:40 +0100913 u16 len;
Neale Ranns02950402019-12-20 00:54:57 +0000914 ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100915 *next_hdr_ptr = ip4->protocol;
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000916 len = payload_len_total + hdr_len - l2_len;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100917 if (udp)
918 {
919 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 1);
Alexander Chernavinb0d2eda2020-03-25 10:56:52 -0400920 udp_len = len - ip_len;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100921 }
922 else
923 esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 0);
Damjan Marionc98275f2019-03-06 14:05:01 +0100924 }
Damjan Marionc98275f2019-03-06 14:05:01 +0100925
Neale Ranns02950402019-12-20 00:54:57 +0000926 clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
927
Alexander Chernavinb0d2eda2020-03-25 10:56:52 -0400928 if (udp)
929 {
930 esp_fill_udp_hdr (sa0, udp, udp_len);
931 }
932
Neale Ranns4ec36c52020-03-31 09:21:29 -0400933 next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
Damjan Marionc98275f2019-03-06 14:05:01 +0100934 }
935
PiotrX Kleskifdca4dd2020-05-05 14:14:22 +0200936 if (lb != b[0])
937 {
938 crypto_ops = &ptd->chained_crypto_ops;
939 integ_ops = &ptd->chained_integ_ops;
940 }
941 else
942 {
943 crypto_ops = &ptd->crypto_ops;
944 integ_ops = &ptd->integ_ops;
945 }
946
Damjan Marionc59b9a22019-03-19 15:38:40 +0100947 esp->spi = spi;
948 esp->seq = clib_net_to_host_u32 (sa0->seq);
Damjan Marionc98275f2019-03-06 14:05:01 +0100949
Fan Zhangf5395782020-04-29 14:00:03 +0100950 if (is_async)
Damjan Marionc98275f2019-03-06 14:05:01 +0100951 {
Fan Zhangf5395782020-04-29 14:00:03 +0100952 if (PREDICT_FALSE (sa0->crypto_async_enc_op_id == 0))
Fan Zhang18f0e312020-10-19 13:08:34 +0100953 {
954 esp_set_next_index (is_async, from, nexts, from[b - bufs],
955 &n_async_drop, drop_next, next);
956 goto trace;
957 }
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000958
Fan Zhangf5395782020-04-29 14:00:03 +0100959 if (esp_prepare_async_frame (vm, ptd, &async_frame, sa0, b[0], esp,
960 payload, payload_len, iv_sz,
Fan Zhang18f0e312020-10-19 13:08:34 +0100961 icv_sz, from[b - bufs], next[0],
962 hdr_len, async_next, lb))
Neale Ranns47feb112019-04-11 15:14:07 +0000963 {
Fan Zhang18f0e312020-10-19 13:08:34 +0100964 /* The fail only caused by submission, free the whole frame. */
965 if (async_frame->n_elts)
966 esp_async_recycle_failed_submit (async_frame, b, from, nexts,
967 &n_async_drop, drop_next,
968 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR);
969 b[0]->error = ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR;
970 esp_set_next_index (1, from, nexts, from[b - bufs],
971 &n_async_drop, drop_next, next);
Fan Zhangf5395782020-04-29 14:00:03 +0100972 goto trace;
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000973 }
Damjan Marionc98275f2019-03-06 14:05:01 +0100974 }
Fan Zhangf5395782020-04-29 14:00:03 +0100975 else
Damjan Marionc98275f2019-03-06 14:05:01 +0100976 {
Fan Zhangf5395782020-04-29 14:00:03 +0100977 esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, payload,
978 payload_len, iv_sz, icv_sz, bufs, b, lb,
Benoît Ganne490b9272021-01-22 18:03:09 +0100979 hdr_len, esp);
Damjan Marionc98275f2019-03-06 14:05:01 +0100980 }
981
Damjan Marionc59b9a22019-03-19 15:38:40 +0100982 vlib_buffer_advance (b[0], 0LL - hdr_len);
Damjan Marionc98275f2019-03-06 14:05:01 +0100983
Damjan Marionc59b9a22019-03-19 15:38:40 +0100984 current_sa_packets += 1;
Filip Tehlarefcad1a2020-02-04 09:36:04 +0000985 current_sa_bytes += payload_len_total;
Damjan Marionc59b9a22019-03-19 15:38:40 +0100986
987 trace:
988 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
Damjan Marionc98275f2019-03-06 14:05:01 +0100989 {
Damjan Marionc59b9a22019-03-19 15:38:40 +0100990 esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
991 sizeof (*tr));
992 tr->sa_index = sa_index0;
993 tr->spi = sa0->spi;
Neale Ranns6afaae12019-07-17 15:07:14 +0000994 tr->seq = sa0->seq;
995 tr->sa_seq_hi = sa0->seq_hi;
Damjan Mariond709cbc2019-03-26 13:16:42 +0100996 tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
Damjan Marionc59b9a22019-03-19 15:38:40 +0100997 tr->crypto_alg = sa0->crypto_alg;
998 tr->integ_alg = sa0->integ_alg;
Damjan Marionc98275f2019-03-06 14:05:01 +0100999 }
Damjan Marionc98275f2019-03-06 14:05:01 +01001000 /* next */
Damjan Marionc59b9a22019-03-19 15:38:40 +01001001 n_left -= 1;
Damjan Marionc98275f2019-03-06 14:05:01 +01001002 next += 1;
Damjan Marionc59b9a22019-03-19 15:38:40 +01001003 b += 1;
Damjan Marionc98275f2019-03-06 14:05:01 +01001004 }
1005
Damjan Marionc59b9a22019-03-19 15:38:40 +01001006 vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
1007 current_sa_index, current_sa_packets,
1008 current_sa_bytes);
Fan Zhangf5395782020-04-29 14:00:03 +01001009 if (!is_async)
1010 {
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001011 esp_process_ops (vm, node, ptd->crypto_ops, bufs, nexts, drop_next);
Fan Zhangf5395782020-04-29 14:00:03 +01001012 esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, bufs, nexts,
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001013 ptd->chunks, drop_next);
Filip Tehlarefcad1a2020-02-04 09:36:04 +00001014
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001015 esp_process_ops (vm, node, ptd->integ_ops, bufs, nexts, drop_next);
Fan Zhangf5395782020-04-29 14:00:03 +01001016 esp_process_chained_ops (vm, node, ptd->chained_integ_ops, bufs, nexts,
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001017 ptd->chunks, drop_next);
Fan Zhangf5395782020-04-29 14:00:03 +01001018 }
Fan Zhang18f0e312020-10-19 13:08:34 +01001019 else
Fan Zhangf5395782020-04-29 14:00:03 +01001020 {
Fan Zhang18f0e312020-10-19 13:08:34 +01001021 if (async_frame && async_frame->n_elts)
1022 {
1023 if (vnet_crypto_async_submit_open_frame (vm, async_frame) < 0)
1024 esp_async_recycle_failed_submit (async_frame, b, from, nexts,
1025 &n_async_drop, drop_next,
1026 ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR);
1027 }
1028 vlib_node_increment_counter (vm, node->node_index,
1029 ESP_ENCRYPT_ERROR_RX_PKTS,
1030 frame->n_vectors);
1031 if (n_async_drop)
1032 vlib_buffer_enqueue_to_next (vm, node, from, nexts, n_async_drop);
1033
1034 return frame->n_vectors;
Fan Zhangf5395782020-04-29 14:00:03 +01001035 }
Damjan Marionc59b9a22019-03-19 15:38:40 +01001036
1037 vlib_node_increment_counter (vm, node->node_index,
1038 ESP_ENCRYPT_ERROR_RX_PKTS, frame->n_vectors);
1039
1040 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1041 return frame->n_vectors;
Ed Warnickecb9cada2015-12-08 15:45:58 -07001042}
1043
Fan Zhangf5395782020-04-29 14:00:03 +01001044always_inline uword
1045esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1046 vlib_frame_t * frame)
1047{
1048 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
1049 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
1050 u32 *from = vlib_frame_vector_args (frame);
1051 u32 n_left = frame->n_vectors;
1052
1053 vlib_get_buffers (vm, from, b, n_left);
1054
1055 if (n_left >= 4)
1056 {
1057 vlib_prefetch_buffer_header (b[0], LOAD);
1058 vlib_prefetch_buffer_header (b[1], LOAD);
1059 vlib_prefetch_buffer_header (b[2], LOAD);
1060 vlib_prefetch_buffer_header (b[3], LOAD);
1061 }
1062
1063 while (n_left > 8)
1064 {
1065 vlib_prefetch_buffer_header (b[4], LOAD);
1066 vlib_prefetch_buffer_header (b[5], LOAD);
1067 vlib_prefetch_buffer_header (b[6], LOAD);
1068 vlib_prefetch_buffer_header (b[7], LOAD);
1069
1070 next[0] = (esp_post_data (b[0]))->next_index;
1071 next[1] = (esp_post_data (b[1]))->next_index;
1072 next[2] = (esp_post_data (b[2]))->next_index;
1073 next[3] = (esp_post_data (b[3]))->next_index;
1074
1075 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1076 {
1077 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
1078 {
1079 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1080 sizeof (*tr));
1081 tr->next_index = next[0];
1082 }
1083 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
1084 {
1085 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
1086 sizeof (*tr));
1087 tr->next_index = next[1];
1088 }
1089 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
1090 {
1091 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
1092 sizeof (*tr));
1093 tr->next_index = next[2];
1094 }
1095 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
1096 {
1097 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
1098 sizeof (*tr));
1099 tr->next_index = next[3];
1100 }
1101 }
1102
1103 b += 4;
1104 next += 4;
1105 n_left -= 4;
1106 }
1107
1108 while (n_left > 0)
1109 {
1110 next[0] = (esp_post_data (b[0]))->next_index;
1111 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1112 {
1113 esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
1114 sizeof (*tr));
1115 tr->next_index = next[0];
1116 }
1117
1118 b += 1;
1119 next += 1;
1120 n_left -= 1;
1121 }
1122
1123 vlib_node_increment_counter (vm, node->node_index,
1124 ESP_ENCRYPT_ERROR_POST_RX_PKTS,
1125 frame->n_vectors);
1126 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
1127 return frame->n_vectors;
1128}
1129
Klement Sekerab8f35442018-10-29 13:38:19 +01001130VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
1131 vlib_node_runtime_t * node,
1132 vlib_frame_t * from_frame)
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001133{
Neale Ranns4a58e492020-12-21 13:19:10 +00001134 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
Fan Zhangf5395782020-04-29 14:00:03 +01001135 esp_encrypt_async_next.esp4_post_next);
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001136}
Ed Warnickecb9cada2015-12-08 15:45:58 -07001137
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -07001138/* *INDENT-OFF* */
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001139VLIB_REGISTER_NODE (esp4_encrypt_node) = {
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001140 .name = "esp4-encrypt",
Ed Warnickecb9cada2015-12-08 15:45:58 -07001141 .vector_size = sizeof (u32),
1142 .format_trace = format_esp_encrypt_trace,
1143 .type = VLIB_NODE_TYPE_INTERNAL,
1144
Neale Ranns4a58e492020-12-21 13:19:10 +00001145 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
Ed Warnickecb9cada2015-12-08 15:45:58 -07001146 .error_strings = esp_encrypt_error_strings,
1147
1148 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
Neale Ranns4a58e492020-12-21 13:19:10 +00001149 .next_nodes = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1150 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1151 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1152 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
1153 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
1154 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
1155 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output" },
Ed Warnickecb9cada2015-12-08 15:45:58 -07001156};
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -07001157/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -07001158
Fan Zhangf5395782020-04-29 14:00:03 +01001159VLIB_NODE_FN (esp4_encrypt_post_node) (vlib_main_t * vm,
1160 vlib_node_runtime_t * node,
1161 vlib_frame_t * from_frame)
1162{
1163 return esp_encrypt_post_inline (vm, node, from_frame);
1164}
1165
1166/* *INDENT-OFF* */
1167VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
1168 .name = "esp4-encrypt-post",
1169 .vector_size = sizeof (u32),
1170 .format_trace = format_esp_post_encrypt_trace,
1171 .type = VLIB_NODE_TYPE_INTERNAL,
1172 .sibling_of = "esp4-encrypt",
1173
1174 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1175 .error_strings = esp_encrypt_error_strings,
1176};
1177/* *INDENT-ON* */
1178
Klement Sekerab8f35442018-10-29 13:38:19 +01001179VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
1180 vlib_node_runtime_t * node,
1181 vlib_frame_t * from_frame)
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001182{
Neale Ranns4a58e492020-12-21 13:19:10 +00001183 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
Fan Zhangf5395782020-04-29 14:00:03 +01001184 esp_encrypt_async_next.esp6_post_next);
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001185}
1186
1187/* *INDENT-OFF* */
1188VLIB_REGISTER_NODE (esp6_encrypt_node) = {
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001189 .name = "esp6-encrypt",
1190 .vector_size = sizeof (u32),
1191 .format_trace = format_esp_encrypt_trace,
1192 .type = VLIB_NODE_TYPE_INTERNAL,
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001193 .sibling_of = "esp4-encrypt",
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001194
1195 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1196 .error_strings = esp_encrypt_error_strings,
Klement Sekerabe5a5dd2018-10-09 16:05:48 +02001197};
1198/* *INDENT-ON* */
1199
Fan Zhangf5395782020-04-29 14:00:03 +01001200VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
1201 vlib_node_runtime_t * node,
1202 vlib_frame_t * from_frame)
1203{
1204 return esp_encrypt_post_inline (vm, node, from_frame);
1205}
1206
1207/* *INDENT-OFF* */
1208VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
1209 .name = "esp6-encrypt-post",
1210 .vector_size = sizeof (u32),
1211 .format_trace = format_esp_post_encrypt_trace,
1212 .type = VLIB_NODE_TYPE_INTERNAL,
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001213 .sibling_of = "esp4-encrypt",
Fan Zhangf5395782020-04-29 14:00:03 +01001214
1215 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1216 .error_strings = esp_encrypt_error_strings,
1217};
1218/* *INDENT-ON* */
1219
Neale Ranns25edf142019-03-22 08:12:48 +00001220VLIB_NODE_FN (esp4_encrypt_tun_node) (vlib_main_t * vm,
1221 vlib_node_runtime_t * node,
1222 vlib_frame_t * from_frame)
1223{
Neale Ranns4a58e492020-12-21 13:19:10 +00001224 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 1,
Fan Zhangf5395782020-04-29 14:00:03 +01001225 esp_encrypt_async_next.esp4_tun_post_next);
Neale Ranns25edf142019-03-22 08:12:48 +00001226}
1227
1228/* *INDENT-OFF* */
1229VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
1230 .name = "esp4-encrypt-tun",
1231 .vector_size = sizeof (u32),
1232 .format_trace = format_esp_encrypt_trace,
1233 .type = VLIB_NODE_TYPE_INTERNAL,
1234
1235 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1236 .error_strings = esp_encrypt_error_strings,
Neale Rannsd7603d92019-03-28 08:56:10 +00001237
Neale Rannsf62a8c02019-04-02 08:13:33 +00001238 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
Neale Rannsd7603d92019-03-28 08:56:10 +00001239 .next_nodes = {
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001240 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1241 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
Neale Ranns4a58e492020-12-21 13:19:10 +00001242 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001243 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
Neale Ranns4a58e492020-12-21 13:19:10 +00001244 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1245 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
Neale Ranns4ec36c52020-03-31 09:21:29 -04001246 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
Neale Rannsd7603d92019-03-28 08:56:10 +00001247 },
Neale Ranns25edf142019-03-22 08:12:48 +00001248};
1249
Fan Zhangf5395782020-04-29 14:00:03 +01001250VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
1251 vlib_node_runtime_t * node,
1252 vlib_frame_t * from_frame)
1253{
1254 return esp_encrypt_post_inline (vm, node, from_frame);
1255}
1256
1257/* *INDENT-OFF* */
1258VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
1259 .name = "esp4-encrypt-tun-post",
1260 .vector_size = sizeof (u32),
1261 .format_trace = format_esp_post_encrypt_trace,
1262 .type = VLIB_NODE_TYPE_INTERNAL,
1263 .sibling_of = "esp4-encrypt-tun",
1264
1265 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1266 .error_strings = esp_encrypt_error_strings,
1267};
Neale Ranns25edf142019-03-22 08:12:48 +00001268/* *INDENT-ON* */
1269
1270VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
1271 vlib_node_runtime_t * node,
1272 vlib_frame_t * from_frame)
1273{
Neale Ranns4a58e492020-12-21 13:19:10 +00001274 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
Fan Zhangf5395782020-04-29 14:00:03 +01001275 esp_encrypt_async_next.esp6_tun_post_next);
Neale Ranns25edf142019-03-22 08:12:48 +00001276}
1277
1278/* *INDENT-OFF* */
1279VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
1280 .name = "esp6-encrypt-tun",
1281 .vector_size = sizeof (u32),
1282 .format_trace = format_esp_encrypt_trace,
1283 .type = VLIB_NODE_TYPE_INTERNAL,
1284
1285 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1286 .error_strings = esp_encrypt_error_strings,
Neale Rannsd7603d92019-03-28 08:56:10 +00001287
Neale Rannsf62a8c02019-04-02 08:13:33 +00001288 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
Neale Rannsd7603d92019-03-28 08:56:10 +00001289 .next_nodes = {
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001290 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1291 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
Neale Ranns4a58e492020-12-21 13:19:10 +00001292 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1293 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
Neale Rannsb1fd80f2020-05-12 13:33:56 +00001294 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
Neale Ranns4a58e492020-12-21 13:19:10 +00001295 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
Neale Ranns4ec36c52020-03-31 09:21:29 -04001296 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
Neale Rannsd7603d92019-03-28 08:56:10 +00001297 },
Neale Ranns25edf142019-03-22 08:12:48 +00001298};
1299
Neale Ranns25edf142019-03-22 08:12:48 +00001300/* *INDENT-ON* */
1301
Fan Zhangf5395782020-04-29 14:00:03 +01001302VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
1303 vlib_node_runtime_t * node,
1304 vlib_frame_t * from_frame)
1305{
1306 return esp_encrypt_post_inline (vm, node, from_frame);
1307}
1308
1309/* *INDENT-OFF* */
1310VLIB_REGISTER_NODE (esp6_encrypt_tun_post_node) = {
1311 .name = "esp6-encrypt-tun-post",
1312 .vector_size = sizeof (u32),
1313 .format_trace = format_esp_post_encrypt_trace,
1314 .type = VLIB_NODE_TYPE_INTERNAL,
Neale Ranns4a58e492020-12-21 13:19:10 +00001315 .sibling_of = "esp-mpls-encrypt-tun",
Fan Zhangf5395782020-04-29 14:00:03 +01001316
Neale Ranns4a58e492020-12-21 13:19:10 +00001317 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
Fan Zhangf5395782020-04-29 14:00:03 +01001318 .error_strings = esp_encrypt_error_strings,
1319};
1320/* *INDENT-ON* */
1321
Neale Ranns4a58e492020-12-21 13:19:10 +00001322VLIB_NODE_FN (esp_mpls_encrypt_tun_node)
1323(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1324{
1325 return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_MPLS, 1,
1326 esp_encrypt_async_next.esp_mpls_tun_post_next);
1327}
1328
1329VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
1330 .name = "esp-mpls-encrypt-tun",
1331 .vector_size = sizeof (u32),
1332 .format_trace = format_esp_encrypt_trace,
1333 .type = VLIB_NODE_TYPE_INTERNAL,
1334
1335 .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
1336 .error_strings = esp_encrypt_error_strings,
1337
1338 .n_next_nodes = ESP_ENCRYPT_N_NEXT,
1339 .next_nodes = {
1340 [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
1341 [ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
1342 [ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
1343 [ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
1344 [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
1345 [ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
1346 [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
1347 },
1348};
1349
1350VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
1351(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
1352{
1353 return esp_encrypt_post_inline (vm, node, from_frame);
1354}
1355
1356VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
1357 .name = "esp-mpls-encrypt-tun-post",
1358 .vector_size = sizeof (u32),
1359 .format_trace = format_esp_post_encrypt_trace,
1360 .type = VLIB_NODE_TYPE_INTERNAL,
1361 .sibling_of = "esp-mpls-encrypt-tun",
1362
1363 .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
1364 .error_strings = esp_encrypt_error_strings,
1365};
1366
Matthew Smith401aedf2019-07-08 14:45:04 -05001367typedef struct
1368{
1369 u32 sa_index;
1370} esp_no_crypto_trace_t;
1371
1372static u8 *
1373format_esp_no_crypto_trace (u8 * s, va_list * args)
1374{
1375 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1376 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1377 esp_no_crypto_trace_t *t = va_arg (*args, esp_no_crypto_trace_t *);
1378
1379 s = format (s, "esp-no-crypto: sa-index %u", t->sa_index);
1380
1381 return s;
1382}
1383
1384enum
1385{
1386 ESP_NO_CRYPTO_NEXT_DROP,
1387 ESP_NO_CRYPTO_N_NEXT,
1388};
1389
1390enum
1391{
1392 ESP_NO_CRYPTO_ERROR_RX_PKTS,
1393};
1394
1395static char *esp_no_crypto_error_strings[] = {
1396 "Outbound ESP packets received",
1397};
1398
1399always_inline uword
1400esp_no_crypto_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
1401 vlib_frame_t * frame)
1402{
1403 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
Matthew Smith401aedf2019-07-08 14:45:04 -05001404 u32 *from = vlib_frame_vector_args (frame);
1405 u32 n_left = frame->n_vectors;
1406
1407 vlib_get_buffers (vm, from, b, n_left);
1408
1409 while (n_left > 0)
1410 {
Matthew Smith401aedf2019-07-08 14:45:04 -05001411 u32 sa_index0;
1412
1413 /* packets are always going to be dropped, but get the sa_index */
Neale Ranns4ec36c52020-03-31 09:21:29 -04001414 sa_index0 = ipsec_tun_protect_get_sa_out
1415 (vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
Matthew Smith401aedf2019-07-08 14:45:04 -05001416
1417 if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
1418 {
1419 esp_no_crypto_trace_t *tr = vlib_add_trace (vm, node, b[0],
1420 sizeof (*tr));
1421 tr->sa_index = sa_index0;
1422 }
1423
1424 n_left -= 1;
Matthew Smith401aedf2019-07-08 14:45:04 -05001425 b += 1;
1426 }
1427
1428 vlib_node_increment_counter (vm, node->node_index,
1429 ESP_NO_CRYPTO_ERROR_RX_PKTS, frame->n_vectors);
1430
Neale Ranns4ec36c52020-03-31 09:21:29 -04001431 vlib_buffer_enqueue_to_single_next (vm, node, from,
1432 ESP_NO_CRYPTO_NEXT_DROP,
1433 frame->n_vectors);
Matthew Smith401aedf2019-07-08 14:45:04 -05001434
1435 return frame->n_vectors;
1436}
1437
1438VLIB_NODE_FN (esp4_no_crypto_tun_node) (vlib_main_t * vm,
1439 vlib_node_runtime_t * node,
1440 vlib_frame_t * from_frame)
1441{
1442 return esp_no_crypto_inline (vm, node, from_frame);
1443}
1444
1445/* *INDENT-OFF* */
1446VLIB_REGISTER_NODE (esp4_no_crypto_tun_node) =
1447{
1448 .name = "esp4-no-crypto",
1449 .vector_size = sizeof (u32),
1450 .format_trace = format_esp_no_crypto_trace,
1451 .n_errors = ARRAY_LEN(esp_no_crypto_error_strings),
1452 .error_strings = esp_no_crypto_error_strings,
1453 .n_next_nodes = ESP_NO_CRYPTO_N_NEXT,
1454 .next_nodes = {
1455 [ESP_NO_CRYPTO_NEXT_DROP] = "ip4-drop",
1456 },
1457};
1458
Matthew Smith401aedf2019-07-08 14:45:04 -05001459VLIB_NODE_FN (esp6_no_crypto_tun_node) (vlib_main_t * vm,
1460 vlib_node_runtime_t * node,
1461 vlib_frame_t * from_frame)
1462{
1463 return esp_no_crypto_inline (vm, node, from_frame);
1464}
1465
1466/* *INDENT-OFF* */
1467VLIB_REGISTER_NODE (esp6_no_crypto_tun_node) =
1468{
1469 .name = "esp6-no-crypto",
1470 .vector_size = sizeof (u32),
1471 .format_trace = format_esp_no_crypto_trace,
1472 .n_errors = ARRAY_LEN(esp_no_crypto_error_strings),
1473 .error_strings = esp_no_crypto_error_strings,
1474 .n_next_nodes = ESP_NO_CRYPTO_N_NEXT,
1475 .next_nodes = {
1476 [ESP_NO_CRYPTO_NEXT_DROP] = "ip6-drop",
1477 },
1478};
Matthew Smith401aedf2019-07-08 14:45:04 -05001479/* *INDENT-ON* */
1480
Neale Ranns2d498302021-02-25 08:38:58 +00001481#ifndef CLIB_MARCH_VARIANT
1482
1483static clib_error_t *
1484esp_encrypt_init (vlib_main_t *vm)
1485{
1486 ipsec_main_t *im = &ipsec_main;
1487
1488 im->esp4_enc_fq_index =
1489 vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
1490 im->esp6_enc_fq_index =
1491 vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
1492 im->esp4_enc_tun_fq_index =
1493 vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
1494 im->esp6_enc_tun_fq_index =
1495 vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
1496 im->esp_mpls_enc_tun_fq_index =
1497 vlib_frame_queue_main_init (esp_mpls_encrypt_tun_node.index, 0);
1498
1499 return 0;
1500}
1501
1502VLIB_INIT_FUNCTION (esp_encrypt_init);
1503
1504#endif
1505
Keith Burns (alagalah)166a9d42016-08-06 11:00:56 -07001506/*
1507 * fd.io coding-style-patch-verification: ON
1508 *
1509 * Local Variables:
1510 * eval: (c-set-style "gnu")
1511 * End:
1512 */