FD.io VPP  v19.04.4-rc0-5-ge88582fac
Vector Packet Processing
esp_decrypt.c
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1 /*
2  * esp_decrypt.c : IPSec ESP decrypt 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 
22 #include <vnet/ipsec/ipsec.h>
23 #include <vnet/ipsec/esp.h>
24 #include <vnet/ipsec/ipsec_io.h>
25 
26 #define foreach_esp_decrypt_next \
27 _(DROP, "error-drop") \
28 _(IP4_INPUT, "ip4-input-no-checksum") \
29 _(IP6_INPUT, "ip6-input") \
30 _(IPSEC_GRE_INPUT, "ipsec-gre-input")
31 
32 #define _(v, s) ESP_DECRYPT_NEXT_##v,
33 typedef enum
34 {
36 #undef _
39 
40 
41 #define foreach_esp_decrypt_error \
42  _(RX_PKTS, "ESP pkts received") \
43  _(DECRYPTION_FAILED, "ESP decryption failed") \
44  _(INTEG_ERROR, "Integrity check failed") \
45  _(CRYPTO_ENGINE_ERROR, "crypto engine error (packet dropped)") \
46  _(REPLAY, "SA replayed packet") \
47  _(CHAINED_BUFFER, "chained buffers (packet dropped)") \
48  _(OVERSIZED_HEADER, "buffer with oversized header (dropped)") \
49  _(NO_TAIL_SPACE, "no enough buffer tail space (dropped)")
50 
51 
52 typedef enum
53 {
54 #define _(sym,str) ESP_DECRYPT_ERROR_##sym,
56 #undef _
59 
60 static char *esp_decrypt_error_strings[] = {
61 #define _(sym,string) string,
63 #undef _
64 };
65 
66 typedef struct
67 {
72 
73 /* packet trace format function */
74 static u8 *
75 format_esp_decrypt_trace (u8 * s, va_list * args)
76 {
77  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
78  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
79  esp_decrypt_trace_t *t = va_arg (*args, esp_decrypt_trace_t *);
80 
81  s = format (s, "esp: crypto %U integrity %U seq %u",
84  return s;
85 }
86 
87 typedef struct
88 {
89  union
90  {
91  struct
92  {
97  };
99  };
100 
105 
107 
108 #define ESP_ENCRYPT_PD_F_FD_TRANSPORT (1 << 2)
109 
112  vlib_node_runtime_t * node, vlib_frame_t * from_frame,
113  int is_ip6)
114 {
115  ipsec_main_t *im = &ipsec_main;
116  u32 thread_index = vm->thread_index;
117  u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
118  u16 len;
119  ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, thread_index);
120  u32 *from = vlib_frame_vector_args (from_frame);
121  u32 n, n_left = from_frame->n_vectors;
122  vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
123  u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
124  esp_decrypt_packet_data_t pkt_data[VLIB_FRAME_SIZE], *pd = pkt_data;
125  esp_decrypt_packet_data_t cpd = { };
126  u32 current_sa_index = ~0, current_sa_bytes = 0, current_sa_pkts = 0;
127  const u8 esp_sz = sizeof (esp_header_t);
128  ipsec_sa_t *sa0 = 0;
129 
130  vlib_get_buffers (vm, from, b, n_left);
133  clib_memset_u16 (nexts, -1, n_left);
134 
135  while (n_left > 0)
136  {
137  u8 *payload;
138 
139  if (n_left > 2)
140  {
141  u8 *p;
142  vlib_prefetch_buffer_header (b[2], LOAD);
143  p = vlib_buffer_get_current (b[1]);
147  }
148 
149  if (vlib_buffer_chain_linearize (vm, b[0]) != 1)
150  {
151  b[0]->error = node->errors[ESP_DECRYPT_ERROR_CHAINED_BUFFER];
152  next[0] = ESP_DECRYPT_NEXT_DROP;
153  goto next;
154  }
155 
156  if (vnet_buffer (b[0])->ipsec.sad_index != current_sa_index)
157  {
158  current_sa_index = vnet_buffer (b[0])->ipsec.sad_index;
159  sa0 = pool_elt_at_index (im->sad, current_sa_index);
160  cpd.icv_sz = sa0->integ_icv_size;
161  cpd.iv_sz = sa0->crypto_iv_size;
162  cpd.flags = sa0->flags;
163  cpd.sa_index = current_sa_index;
164 
166  current_sa_index, current_sa_pkts,
167  current_sa_bytes);
168 
169  current_sa_bytes = current_sa_pkts = 0;
170  }
171 
172  /* store packet data for next round for easier prefetch */
173  pd->sa_data = cpd.sa_data;
174  pd->current_data = b[0]->current_data;
175  pd->current_length = b[0]->current_length;
176  pd->hdr_sz = pd->current_data - vnet_buffer (b[0])->l3_hdr_offset;
177  payload = b[0]->data + pd->current_data;
178 
179  /* we need 4 extra bytes for HMAC calculation when ESN are used */
180  if (ipsec_sa_is_set_USE_ESN (sa0) && pd->icv_sz &&
181  (pd->current_data + pd->current_length + 4 > buffer_data_size))
182  {
183  b[0]->error = node->errors[ESP_DECRYPT_ERROR_NO_TAIL_SPACE];
184  next[0] = ESP_DECRYPT_NEXT_DROP;
185  goto next;
186  }
187 
188  /* anti-reply check */
189  if (ipsec_sa_anti_replay_check (sa0, &((esp_header_t *) payload)->seq))
190  {
191  b[0]->error = node->errors[ESP_DECRYPT_ERROR_REPLAY];
192  next[0] = ESP_DECRYPT_NEXT_DROP;
193  goto next;
194  }
195 
196  len = pd->current_length - cpd.icv_sz;
197  current_sa_pkts += 1;
198  current_sa_bytes += pd->current_length;
199 
201  {
202  vnet_crypto_op_t *op;
204 
205  vnet_crypto_op_init (op, sa0->integ_op_id);
206  op->key = sa0->integ_key.data;
207  op->key_len = sa0->integ_key.len;
208  op->src = payload;
210  op->user_data = b - bufs;
211  op->digest = payload + len;
212  op->digest_len = cpd.icv_sz;
213  op->len = len;
214  if (ipsec_sa_is_set_USE_ESN (sa0))
215  {
216  /* shift ICV for 4 bytes to insert ESN */
217  u8 tmp[ESP_MAX_ICV_SIZE], sz = sizeof (sa0->seq_hi);
218  clib_memcpy_fast (tmp, payload + len, ESP_MAX_ICV_SIZE);
219  clib_memcpy_fast (payload + len, &sa0->seq_hi, sz);
220  clib_memcpy_fast (payload + len + sz, tmp, ESP_MAX_ICV_SIZE);
221  op->len += sz;
222  op->digest += sz;
223  }
224  }
225 
226  payload += esp_sz;
227  len -= esp_sz;
228 
230  {
231  vnet_crypto_op_t *op;
234  op->key = sa0->crypto_key.data;
235  op->iv = payload;
236 
237  if (ipsec_sa_is_set_IS_AEAD (sa0))
238  {
239  esp_header_t *esp0;
240  esp_aead_t *aad;
241  u8 *scratch;
242  u32 salt;
243 
244  /*
245  * construct the AAD and the nonce (Salt || IV) in a scratch
246  * space in front of the IP header.
247  */
248  scratch = payload - esp_sz;
249  esp0 = (esp_header_t *) (scratch);
250 
251  scratch -= (sizeof (*aad) + pd->hdr_sz);
252  op->aad = scratch;
253 
254  esp_aad_fill (op, esp0, sa0);
255 
256  /*
257  * we don't need to refer to the ESP header anymore so we
258  * can overwrite it with the salt and use the IV where it is
259  * to form the nonce = (Salt + IV)
260  */
261  salt = clib_host_to_net_u32 (sa0->salt);
262  op->iv -= sizeof (sa0->salt);
263  clib_memcpy_fast (op->iv, &salt, sizeof (sa0->salt));
264  op->iv_len = cpd.iv_sz + sizeof (sa0->salt);
265 
266  op->tag = payload + len;
267  op->tag_len = 16;
268  }
269  op->src = op->dst = payload += cpd.iv_sz;
270  op->len = len - cpd.iv_sz;
271  op->user_data = b - bufs;
272  }
273 
274  /* next */
275  next:
276  n_left -= 1;
277  next += 1;
278  pd += 1;
279  b += 1;
280  }
281 
283  current_sa_index, current_sa_pkts,
284  current_sa_bytes);
285 
286  if ((n = vec_len (ptd->integ_ops)))
287  {
288  vnet_crypto_op_t *op = ptd->integ_ops;
289  n -= vnet_crypto_process_ops (vm, op, n);
290  while (n)
291  {
292  ASSERT (op - ptd->integ_ops < vec_len (ptd->integ_ops));
293  if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
294  {
295  u32 err, bi = op->user_data;
296  if (op->status == VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC)
297  err = ESP_DECRYPT_ERROR_INTEG_ERROR;
298  else
299  err = ESP_DECRYPT_ERROR_CRYPTO_ENGINE_ERROR;
300  bufs[bi]->error = node->errors[err];
301  nexts[bi] = ESP_DECRYPT_NEXT_DROP;
302  n--;
303  }
304  op++;
305  }
306  }
307  if ((n = vec_len (ptd->crypto_ops)))
308  {
309  vnet_crypto_op_t *op = ptd->crypto_ops;
310  n -= vnet_crypto_process_ops (vm, op, n);
311  while (n)
312  {
313  ASSERT (op - ptd->crypto_ops < vec_len (ptd->crypto_ops));
314  if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
315  {
316  u32 err, bi;
317 
318  bi = op->user_data;
319 
320  if (op->status == VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC)
321  err = ESP_DECRYPT_ERROR_DECRYPTION_FAILED;
322  else
323  err = ESP_DECRYPT_ERROR_CRYPTO_ENGINE_ERROR;
324 
325  bufs[bi]->error = node->errors[err];
326  nexts[bi] = ESP_DECRYPT_NEXT_DROP;
327  n--;
328  }
329  op++;
330  }
331  }
332 
333  /* Post decryption ronud - adjust packet data start and length and next
334  node */
335 
336  n_left = from_frame->n_vectors;
337  next = nexts;
338  pd = pkt_data;
339  b = bufs;
340 
341  while (n_left)
342  {
343  const u8 tun_flags = IPSEC_SA_FLAG_IS_TUNNEL |
344  IPSEC_SA_FLAG_IS_TUNNEL_V6;
345 
346  if (n_left >= 2)
347  {
348  void *data = b[1]->data + pd[1].current_data;
349 
350  /* buffer metadata */
351  vlib_prefetch_buffer_header (b[1], LOAD);
352 
353  /* esp_footer_t */
354  CLIB_PREFETCH (data + pd[1].current_length - pd[1].icv_sz - 2,
355  CLIB_CACHE_LINE_BYTES, LOAD);
356 
357  /* packet headers */
359  CLIB_CACHE_LINE_BYTES * 2, LOAD);
360  }
361 
362  if (next[0] < ESP_DECRYPT_N_NEXT)
363  goto trace;
364 
365  sa0 = vec_elt_at_index (im->sad, pd->sa_index);
366  u8 *payload = b[0]->data + pd->current_data;
367 
368  ipsec_sa_anti_replay_advance (sa0, &((esp_header_t *) payload)->seq);
369 
370  esp_footer_t *f = (esp_footer_t *) (b[0]->data + pd->current_data +
371  pd->current_length - sizeof (*f) -
372  pd->icv_sz);
373  u16 adv = pd->iv_sz + esp_sz;
374  u16 tail = sizeof (esp_footer_t) + f->pad_length + pd->icv_sz;
375 
376  if ((pd->flags & tun_flags) == 0) /* transport mode */
377  {
378  u8 udp_sz = (is_ip6 == 0 && pd->flags & IPSEC_SA_FLAG_UDP_ENCAP) ?
379  sizeof (udp_header_t) : 0;
380  u16 ip_hdr_sz = pd->hdr_sz - udp_sz;
381  u8 *old_ip = b[0]->data + pd->current_data - ip_hdr_sz - udp_sz;
382  u8 *ip = old_ip + adv + udp_sz;
383 
384  if (is_ip6 && ip_hdr_sz > 64)
385  memmove (ip, old_ip, ip_hdr_sz);
386  else
387  clib_memcpy_le64 (ip, old_ip, ip_hdr_sz);
388 
389  b[0]->current_data = pd->current_data + adv - ip_hdr_sz;
390  b[0]->current_length = pd->current_length + ip_hdr_sz - tail - adv;
391 
392  if (is_ip6)
393  {
394  ip6_header_t *ip6 = (ip6_header_t *) ip;
395  u16 len = clib_net_to_host_u16 (ip6->payload_length);
396  len -= adv + tail;
397  ip6->payload_length = clib_host_to_net_u16 (len);
398  ip6->protocol = f->next_header;
399  next[0] = ESP_DECRYPT_NEXT_IP6_INPUT;
400  }
401  else
402  {
403  ip4_header_t *ip4 = (ip4_header_t *) ip;
404  ip_csum_t sum = ip4->checksum;
405  u16 len = clib_net_to_host_u16 (ip4->length);
406  len = clib_host_to_net_u16 (len - adv - tail - udp_sz);
407  sum = ip_csum_update (sum, ip4->protocol, f->next_header,
409  sum = ip_csum_update (sum, ip4->length, len,
410  ip4_header_t, length);
411  ip4->checksum = ip_csum_fold (sum);
412  ip4->protocol = f->next_header;
413  ip4->length = len;
414  next[0] = ESP_DECRYPT_NEXT_IP4_INPUT;
415  }
416  }
417  else
418  {
419  if (PREDICT_TRUE (f->next_header == IP_PROTOCOL_IP_IN_IP))
420  {
421  next[0] = ESP_DECRYPT_NEXT_IP4_INPUT;
422  b[0]->current_data = pd->current_data + adv;
423  b[0]->current_length = pd->current_length + adv - tail;
424  }
425  else if (f->next_header == IP_PROTOCOL_IPV6)
426  {
427  next[0] = ESP_DECRYPT_NEXT_IP6_INPUT;
428  b[0]->current_data = pd->current_data + adv;
429  b[0]->current_length = pd->current_length + adv - tail;
430  }
431  else
432  {
433  next[0] = ESP_DECRYPT_NEXT_DROP;
434  b[0]->error = node->errors[ESP_DECRYPT_ERROR_DECRYPTION_FAILED];
435  }
436  }
437 
438  if (PREDICT_FALSE (ipsec_sa_is_set_IS_GRE (sa0)))
439  next[0] = ESP_DECRYPT_NEXT_IPSEC_GRE_INPUT;
440 
441  trace:
442  if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
443  {
445  u8 *payload = b[0]->data + pd->current_data;
446  tr = vlib_add_trace (vm, node, b[0], sizeof (*tr));
447  sa0 = pool_elt_at_index (im->sad,
448  vnet_buffer (b[0])->ipsec.sad_index);
449  tr->crypto_alg = sa0->crypto_alg;
450  tr->integ_alg = sa0->integ_alg;
451  tr->seq = clib_host_to_net_u32 (((esp_header_t *) payload)->seq);
452  }
453 
454  /* next */
455  n_left -= 1;
456  next += 1;
457  pd += 1;
458  b += 1;
459  }
460 
461  n_left = from_frame->n_vectors;
463  ESP_DECRYPT_ERROR_RX_PKTS, n_left);
464 
465  vlib_buffer_enqueue_to_next (vm, node, from, nexts, n_left);
466 
467  b = bufs;
468  return n_left;
469 }
470 
471 VLIB_NODE_FN (esp4_decrypt_node) (vlib_main_t * vm,
472  vlib_node_runtime_t * node,
473  vlib_frame_t * from_frame)
474 {
475  return esp_decrypt_inline (vm, node, from_frame, 0 /* is_ip6 */ );
476 }
477 
478 /* *INDENT-OFF* */
479 VLIB_REGISTER_NODE (esp4_decrypt_node) = {
480  .name = "esp4-decrypt",
481  .vector_size = sizeof (u32),
482  .format_trace = format_esp_decrypt_trace,
483  .type = VLIB_NODE_TYPE_INTERNAL,
484 
485  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
486  .error_strings = esp_decrypt_error_strings,
487 
488  .n_next_nodes = ESP_DECRYPT_N_NEXT,
489  .next_nodes = {
490 #define _(s,n) [ESP_DECRYPT_NEXT_##s] = n,
492 #undef _
493  },
494 };
495 /* *INDENT-ON* */
496 
497 VLIB_NODE_FN (esp6_decrypt_node) (vlib_main_t * vm,
498  vlib_node_runtime_t * node,
499  vlib_frame_t * from_frame)
500 {
501  return esp_decrypt_inline (vm, node, from_frame, 1 /* is_ip6 */ );
502 }
503 
504 /* *INDENT-OFF* */
505 VLIB_REGISTER_NODE (esp6_decrypt_node) = {
506  .name = "esp6-decrypt",
507  .vector_size = sizeof (u32),
508  .format_trace = format_esp_decrypt_trace,
509  .type = VLIB_NODE_TYPE_INTERNAL,
510 
511  .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
512  .error_strings = esp_decrypt_error_strings,
513 
514  .n_next_nodes = ESP_DECRYPT_N_NEXT,
515  .next_nodes = {
516 #define _(s,n) [ESP_DECRYPT_NEXT_##s] = n,
518 #undef _
519  },
520 };
521 /* *INDENT-ON* */
522 
523 /*
524  * fd.io coding-style-patch-verification: ON
525  *
526  * Local Variables:
527  * eval: (c-set-style "gnu")
528  * End:
529  */
u32 vnet_crypto_process_ops(vlib_main_t *vm, vnet_crypto_op_t ops[], u32 n_ops)
Definition: crypto.c:46
u8 * format_ipsec_integ_alg(u8 *s, va_list *args)
Definition: ipsec_format.c:109
static vlib_cli_command_t trace
(constructor) VLIB_CLI_COMMAND (trace)
Definition: vlib_api_cli.c:862
static int ipsec_sa_anti_replay_check(ipsec_sa_t *sa, u32 *seqp)
Definition: ipsec_sa.h:230
u32 flags
Definition: vhost_user.h:115
static u8 * format_esp_decrypt_trace(u8 *s, va_list *args)
Definition: esp_decrypt.c:75
#define CLIB_UNUSED(x)
Definition: clib.h:82
ipsec_per_thread_data_t * ptd
Definition: ipsec.h:161
vnet_crypto_op_t * integ_ops
Definition: ipsec.h:87
static char * esp_decrypt_error_strings[]
Definition: esp_decrypt.c:60
static void vlib_increment_combined_counter(vlib_combined_counter_main_t *cm, u32 thread_index, u32 index, u64 n_packets, u64 n_bytes)
Increment a combined counter.
Definition: counter.h:220
#define PREDICT_TRUE(x)
Definition: clib.h:112
ipsec_integ_alg_t
Definition: ipsec_sa.h:60
i16 current_data
signed offset in data[], pre_data[] that we are currently processing.
Definition: buffer.h:110
unsigned long u64
Definition: types.h:89
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
#define vec_add2_aligned(V, P, N, A)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:572
ipsec_key_t crypto_key
Definition: ipsec_sa.h:151
ipsec_integ_alg_t integ_alg
Definition: ipsec_sa.h:153
u32 thread_index
Definition: main.h:197
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
vnet_crypto_op_t * crypto_ops
Definition: ipsec.h:86
u8 data[0]
Packet data.
Definition: buffer.h:181
ipsec_crypto_alg_t crypto_alg
Definition: esp_decrypt.c:69
AES GCM Additional Authentication data.
Definition: esp.h:60
uword ip_csum_t
Definition: ip_packet.h:181
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
u8 data[128]
Definition: ipsec.api:248
#define VLIB_NODE_FN(node)
Definition: node.h:201
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:468
vnet_crypto_op_id_t integ_op_id
Definition: ipsec_sa.h:130
static void ipsec_sa_anti_replay_advance(ipsec_sa_t *sa, u32 *seqp)
Definition: ipsec_sa.h:295
esp_decrypt_next_t
Definition: esp_decrypt.c:33
unsigned char u8
Definition: types.h:56
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
u32 seq_hi
Definition: ipsec_sa.h:123
ipsec_main_t ipsec_main
Definition: ipsec.c:28
#define always_inline
Definition: clib.h:98
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:203
static_always_inline void vnet_crypto_op_init(vnet_crypto_op_t *op, vnet_crypto_op_id_t type)
Definition: crypto.h:190
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
u8 * format_ipsec_crypto_alg(u8 *s, va_list *args)
Definition: ipsec_format.c:77
unsigned int u32
Definition: types.h:88
#define foreach_esp_decrypt_error
Definition: esp_decrypt.c:41
ipsec_sa_flags_t flags
Definition: ipsec_sa.h:116
#define VLIB_FRAME_SIZE
Definition: node.h:376
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:136
static u32 vlib_buffer_chain_linearize(vlib_main_t *vm, vlib_buffer_t *b)
#define ESP_MAX_ICV_SIZE
Definition: esp.h:74
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
static void esp_aad_fill(vnet_crypto_op_t *op, const esp_header_t *esp, const ipsec_sa_t *sa)
Definition: esp.h:135
uword user_data
Definition: crypto.h:125
u32 salt
Definition: ipsec_sa.h:163
unsigned short u16
Definition: types.h:57
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:229
#define PREDICT_FALSE(x)
Definition: clib.h:111
u32 node_index
Node index.
Definition: node.h:494
#define VNET_CRYPTO_OP_FLAG_HMAC_CHECK
Definition: crypto.h:114
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1150
u8 len
Definition: ip_types.api:49
static_always_inline u32 vlib_buffer_get_default_data_size(vlib_main_t *vm)
Definition: buffer_funcs.h:96
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
u16 n_vectors
Definition: node.h:395
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:80
vlib_main_t * vm
Definition: buffer.c:312
static_always_inline void vlib_buffer_enqueue_to_next(vlib_main_t *vm, vlib_node_runtime_t *node, u32 *buffers, u16 *nexts, uword count)
Definition: buffer_node.h:332
STATIC_ASSERT_SIZEOF(esp_decrypt_packet_data_t, 2 *sizeof(u64))
enum ipsec_sad_flags_t_ ipsec_sa_flags_t
#define ARRAY_LEN(x)
Definition: clib.h:62
vlib_combined_counter_main_t ipsec_sa_counters
SA packet & bytes counters.
Definition: ipsec_sa.c:25
u8 data[IPSEC_KEY_MAX_LEN]
Definition: ipsec_sa.h:80
#define ASSERT(truth)
esp_decrypt_error_t
Definition: esp_decrypt.c:52
ipsec_sa_t * sad
Definition: ipsec.h:95
ipsec_sa_flags_t flags
Definition: esp_decrypt.c:95
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace_funcs.h:57
static_always_inline void clib_memset_u16(void *p, u16 val, uword count)
Definition: string.h:378
static_always_inline void clib_memcpy_le64(u8 *dst, u8 *src, u8 len)
Definition: string.h:283
u16 payload_length
Definition: ip6_packet.h:376
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
ipsec_crypto_alg_t
Definition: ipsec_sa.h:38
#define ip_csum_update(sum, old, new, type, field)
Definition: ip_packet.h:231
vnet_crypto_op_id_t crypto_enc_op_id
Definition: ipsec_sa.h:128
vnet_crypto_op_status_t status
Definition: crypto.h:111
#define vnet_buffer(b)
Definition: buffer.h:369
#define foreach_esp_decrypt_next
Definition: esp_decrypt.c:26
ipsec_crypto_alg_t crypto_alg
Definition: ipsec_sa.h:150
static_always_inline void vlib_get_buffers(vlib_main_t *vm, u32 *bi, vlib_buffer_t **b, int count)
Translate array of buffer indices into buffer pointers.
Definition: buffer_funcs.h:244
u8 crypto_iv_size
Definition: ipsec_sa.h:118
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
ipsec_key_t integ_key
Definition: ipsec_sa.h:154
vnet_crypto_op_id_t crypto_dec_op_id
Definition: ipsec_sa.h:129
static uword esp_decrypt_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_ip6)
Definition: esp_decrypt.c:111
u8 integ_icv_size
Definition: ipsec_sa.h:120
static u16 ip_csum_fold(ip_csum_t c)
Definition: ip_packet.h:237
ipsec_integ_alg_t integ_alg
Definition: esp_decrypt.c:70
u8 protocol
Definition: ipsec.api:96
signed short i16
Definition: types.h:46