FD.io VPP  v19.08.3-2-gbabecb413
Vector Packet Processing
flow_report_classify.c
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1 /*
2  * Copyright (c) 2015 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
17 #include <vnet/api_errno.h>
18 
19 /* Common prefix of tcp and udp headers
20  * containing only source and destination port fields */
21 typedef struct
22 {
25 
27 
28 u8 *
30  flow_report_t * fr,
31  ip4_address_t * collector_address,
33  u16 collector_port,
35  u32 n_elts, u32 * stream_index)
36 {
40  u32 flow_table_index = fr->opaque.as_uword;
41  u8 *ip_start;
43  ip6_header_t *ip6;
44  tcpudp_header_t *tcpudp;
45  udp_header_t *udp;
50  ipfix_field_specifier_t *first_field;
51  u8 *rewrite = 0;
53  u32 field_count = 0;
54  u32 field_index = 0;
55  flow_report_stream_t *stream;
56  u8 ip_version;
57  u8 transport_protocol;
58  u8 *virt_mask;
59  u8 *real_mask;
60 
61  stream = &frm->streams[fr->stream_index];
62 
63  ipfix_classify_table_t *table = &fcm->tables[flow_table_index];
64 
65  ip_version = table->ip_version;
66  transport_protocol = table->transport_protocol;
67 
68  tblp = pool_elt_at_index (vcm->tables, table->classify_table_index);
69 
70  virt_mask = (u8 *) (tblp->mask - tblp->skip_n_vectors);
71  real_mask = (u8 *) (tblp->mask);
72 
73  /* Determine field count */
74  ip_start = virt_mask + sizeof (ethernet_header_t);
75 #define _(field,mask,item,length) \
76  if (((u8 *)&field >= real_mask) && (memcmp(&field, &mask, length) == 0)) \
77  { \
78  field_count++; \
79  \
80  fr->fields_to_send = clib_bitmap_set (fr->fields_to_send, \
81  field_index, 1); \
82  } \
83  field_index++;
85 #undef _
86 
87  /* Add packetTotalCount manually */
88  field_count += 1;
89 
90  /* $$$ enterprise fields, at some later date */
91 
92  /* allocate rewrite space */
93  vec_validate_aligned (rewrite,
95  + field_count * sizeof (ipfix_field_specifier_t) - 1,
97 
98  tp = (ip4_ipfix_template_packet_t *) rewrite;
99  ip = (ip4_header_t *) & tp->ip4;
100  udp = (udp_header_t *) (ip + 1);
101  h = (ipfix_message_header_t *) (udp + 1);
102  s = (ipfix_set_header_t *) (h + 1);
103  t = (ipfix_template_header_t *) (s + 1);
104  first_field = f = (ipfix_field_specifier_t *) (t + 1);
105 
106  ip->ip_version_and_header_length = 0x45;
107  ip->ttl = 254;
108  ip->protocol = IP_PROTOCOL_UDP;
109  ip->src_address.as_u32 = src_address->as_u32;
110  ip->dst_address.as_u32 = collector_address->as_u32;
111  udp->src_port = clib_host_to_net_u16 (stream->src_port);
112  udp->dst_port = clib_host_to_net_u16 (collector_port);
113  udp->length = clib_host_to_net_u16 (vec_len (rewrite) - sizeof (*ip));
114 
115  /* FIXUP: message header export_time */
116  /* FIXUP: message header sequence_number */
117  h->domain_id = clib_host_to_net_u32 (stream->domain_id);
118 
119  /* Take another trip through the mask and build the template */
120  ip_start = virt_mask + sizeof (ethernet_header_t);
121 #define _(field,mask,item,length) \
122  if (((u8 *)&field >= real_mask) && (memcmp(&field, &mask, length) == 0)) \
123  { \
124  f->e_id_length = ipfix_e_id_length (0 /* enterprise */, \
125  item, length); \
126  f++; \
127  }
129 #undef _
130 
131  /* Add packetTotalCount manually */
132  f->e_id_length =
133  ipfix_e_id_length (0 /* enterprise */ , packetTotalCount, 8);
134  f++;
135 
136  /* Back to the template packet... */
137  ip = (ip4_header_t *) & tp->ip4;
138  udp = (udp_header_t *) (ip + 1);
139 
140  ASSERT (f - first_field);
141  /* Field count in this template */
142  t->id_count = ipfix_id_count (fr->template_id, f - first_field);
143 
144  /* set length in octets */
145  s->set_id_length =
146  ipfix_set_id_length (2 /* set_id */ , (u8 *) f - (u8 *) s);
147 
148  /* message length in octets */
149  h->version_length = version_length ((u8 *) f - (u8 *) h);
150 
151  ip->length = clib_host_to_net_u16 ((u8 *) f - (u8 *) ip);
152  ip->checksum = ip4_header_checksum (ip);
153 
154  return rewrite;
155 }
156 
157 vlib_frame_t *
159  flow_report_t * fr,
160  vlib_frame_t * f, u32 * to_next, u32 node_index)
161 {
164  u32 flow_table_index = fr->opaque.as_uword;
167  vnet_classify_entry_t *v, *save_v;
168  vlib_buffer_t *b0 = 0;
169  u32 next_offset = 0;
170  u32 record_offset = 0;
171  u32 bi0 = ~0;
172  int i, j, k;
175  ipfix_set_header_t *s = 0;
176  u8 *ip_start;
177  ip4_header_t *ip;
178  ip6_header_t *ip6;
179  tcpudp_header_t *tcpudp;
180  udp_header_t *udp;
181  int field_index;
182  u32 records_this_buffer;
183  u16 new_l0, old_l0;
184  ip_csum_t sum0;
185  vlib_main_t *vm = frm->vlib_main;
186  flow_report_stream_t *stream;
187  u8 ip_version;
188  u8 transport_protocol;
189  u8 *virt_key;
190 
191  stream = &frm->streams[fr->stream_index];
192 
193  ipfix_classify_table_t *table = &fcm->tables[flow_table_index];
194 
195  ip_version = table->ip_version;
196  transport_protocol = table->transport_protocol;
197 
198  t = pool_elt_at_index (vcm->tables, table->classify_table_index);
199 
201 
202  for (i = 0; i < t->nbuckets; i++)
203  {
204  b = &t->buckets[i];
205  if (b->offset == 0)
206  continue;
207 
208  save_v = vnet_classify_get_entry (t, b->offset);
209  for (j = 0; j < (1 << b->log2_pages); j++)
210  {
211  for (k = 0; k < t->entries_per_page; k++)
212  {
214  (t, save_v, j * t->entries_per_page + k);
215 
217  continue;
218 
219  /* OK, we have something to send... */
220  if (PREDICT_FALSE (b0 == 0))
221  {
222  if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
223  goto flush;
224  b0 = vlib_get_buffer (vm, bi0);
225 
226  u32 copy_len = sizeof (ip4_header_t) +
227  sizeof (udp_header_t) + sizeof (ipfix_message_header_t);
228  clib_memcpy_fast (b0->data, fr->rewrite, copy_len);
229  b0->current_data = 0;
230  b0->current_length = copy_len;
231  b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
232  vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
233  vnet_buffer (b0)->sw_if_index[VLIB_TX] = frm->fib_index;
234 
235  tp = vlib_buffer_get_current (b0);
236  ip = (ip4_header_t *) & tp->ip4;
237  udp = (udp_header_t *) (ip + 1);
238  h = (ipfix_message_header_t *) (udp + 1);
239  s = (ipfix_set_header_t *) (h + 1);
240 
241  /* FIXUP: message header export_time */
242  h->export_time = (u32)
243  (((f64) frm->unix_time_0) +
244  (vlib_time_now (frm->vlib_main) - frm->vlib_time_0));
245  h->export_time = clib_host_to_net_u32 (h->export_time);
246 
247  /* FIXUP: message header sequence_number */
248  h->sequence_number = stream->sequence_number;
249  h->sequence_number =
250  clib_host_to_net_u32 (h->sequence_number);
251 
252  next_offset = (u32) (((u8 *) (s + 1)) - (u8 *) tp);
253  record_offset = next_offset;
254  records_this_buffer = 0;
255  }
256 
257  field_index = 0;
258  virt_key = (u8 *) (v->key - t->skip_n_vectors);
259  ip_start = virt_key + sizeof (ethernet_header_t);
260 #define _(field,mask,item,length) \
261  if (clib_bitmap_get (fr->fields_to_send, field_index)) \
262  { \
263  clib_memcpy_fast (b0->data + next_offset, &field, \
264  length); \
265  next_offset += length; \
266  } \
267  field_index++;
269 #undef _
270 
271  /* Add packetTotalCount manually */
272  {
273  u64 packets = clib_host_to_net_u64 (v->hits);
274  clib_memcpy_fast (b0->data + next_offset, &packets,
275  sizeof (packets));
276  next_offset += sizeof (packets);
277  }
278  records_this_buffer++;
279  stream->sequence_number++;
280 
281  /* Next record will have the same size as this record */
282  u32 next_record_size = next_offset - record_offset;
283  record_offset = next_offset;
284 
285  if (next_offset + next_record_size > frm->path_mtu)
286  {
288  next_offset -
289  (sizeof (*ip) +
290  sizeof (*udp) +
291  sizeof (*h)));
292  h->version_length =
293  version_length (next_offset -
294  (sizeof (*ip) + sizeof (*udp)));
295  b0->current_length = next_offset;
296  b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
297 
298  tp = vlib_buffer_get_current (b0);
299  ip = (ip4_header_t *) & tp->ip4;
300  udp = (udp_header_t *) (ip + 1);
301 
302  sum0 = ip->checksum;
303  old_l0 = ip->length;
304  new_l0 = clib_host_to_net_u16 ((u16) next_offset);
305 
306  sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
307  length /* changed member */ );
308 
309  ip->checksum = ip_csum_fold (sum0);
310  ip->length = new_l0;
311  udp->length =
312  clib_host_to_net_u16 (b0->current_length - sizeof (*ip));
313 
314  if (frm->udp_checksum)
315  {
316  /* RFC 7011 section 10.3.2. */
317  udp->checksum =
318  ip4_tcp_udp_compute_checksum (vm, b0, ip);
319  if (udp->checksum == 0)
320  udp->checksum = 0xffff;
321  }
322 
323  ASSERT (ip->checksum == ip4_header_checksum (ip));
324 
325  to_next[0] = bi0;
326  f->n_vectors++;
327  to_next++;
328 
329  if (f->n_vectors == VLIB_FRAME_SIZE)
330  {
331  vlib_put_frame_to_node (vm, node_index, f);
332  f = vlib_get_frame_to_node (vm, node_index);
333  f->n_vectors = 0;
334  to_next = vlib_frame_vector_args (f);
335  }
336  b0 = 0;
337  bi0 = ~0;
338  }
339  }
340  }
341  }
342 
343 flush:
344  if (b0)
345  {
347  next_offset -
348  (sizeof (*ip) + sizeof (*udp) +
349  sizeof (*h)));
350  h->version_length = version_length (next_offset -
351  (sizeof (*ip) + sizeof (*udp)));
352  b0->current_length = next_offset;
353  b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
354 
355  tp = vlib_buffer_get_current (b0);
356  ip = (ip4_header_t *) & tp->ip4;
357  udp = (udp_header_t *) (ip + 1);
358 
359  sum0 = ip->checksum;
360  old_l0 = ip->length;
361  new_l0 = clib_host_to_net_u16 ((u16) next_offset);
362 
363  sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
364  length /* changed member */ );
365 
366  ip->checksum = ip_csum_fold (sum0);
367  ip->length = new_l0;
368  udp->length = clib_host_to_net_u16 (b0->current_length - sizeof (*ip));
369 
370  if (frm->udp_checksum)
371  {
372  /* RFC 7011 section 10.3.2. */
373  udp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip);
374  if (udp->checksum == 0)
375  udp->checksum = 0xffff;
376  }
377 
378  ASSERT (ip->checksum == ip4_header_checksum (ip));
379 
380  to_next[0] = bi0;
381  f->n_vectors++;
382 
383  b0 = 0;
384  bi0 = ~0;
385  }
386 
388  return f;
389 }
390 
391 static clib_error_t *
393  unformat_input_t * input,
394  vlib_cli_command_t * cmd)
395 {
399  ipfix_classify_table_t *table;
400  int rv;
401  int is_add = -1;
403  u8 ip_version = 0;
404  u8 transport_protocol = 255;
405  clib_error_t *error = 0;
406 
407  if (fcm->src_port == 0)
408  clib_error_return (0, "call 'set ipfix classify stream' first");
409 
410  clib_memset (&args, 0, sizeof (args));
411 
413  {
414  if (unformat (input, "add"))
415  is_add = 1;
416  else if (unformat (input, "del"))
417  is_add = 0;
418  else if (unformat (input, "%d", &classify_table_index))
419  ;
420  else if (unformat (input, "ip4"))
421  ip_version = 4;
422  else if (unformat (input, "ip6"))
423  ip_version = 6;
424  else if (unformat (input, "tcp"))
425  transport_protocol = 6;
426  else if (unformat (input, "udp"))
427  transport_protocol = 17;
428  else
429  return clib_error_return (0, "unknown input `%U'",
430  format_unformat_error, input);
431  }
432 
433  if (is_add == -1)
434  return clib_error_return (0, "expecting: add|del");
435  if (classify_table_index == ~0)
436  return clib_error_return (0, "classifier table not specified");
437  if (ip_version == 0)
438  return clib_error_return (0, "IP version not specified");
439 
440  table = 0;
441  int i;
442  for (i = 0; i < vec_len (fcm->tables); i++)
444  if (fcm->tables[i].classify_table_index == classify_table_index)
445  {
446  table = &fcm->tables[i];
447  break;
448  }
449 
450  if (is_add)
451  {
452  if (table)
453  return clib_error_return (0,
454  "Specified classifier table already used");
455  table = ipfix_classify_add_table ();
457  }
458  else
459  {
460  if (!table)
461  return clib_error_return (0,
462  "Specified classifier table not registered");
463  }
464 
465  table->ip_version = ip_version;
466  table->transport_protocol = transport_protocol;
467 
468  args.opaque.as_uword = table - fcm->tables;
471  args.is_add = is_add;
472  args.domain_id = fcm->domain_id;
473  args.src_port = fcm->src_port;
474 
475  rv = vnet_flow_report_add_del (frm, &args, NULL);
476 
478 
479  /* If deleting, or add failed */
480  if (is_add == 0 || (rv && is_add))
481  ipfix_classify_delete_table (table - fcm->tables);
482 
483  return error;
484 }
485 
486 /* *INDENT-OFF* */
487 VLIB_CLI_COMMAND (ipfix_classify_table_add_del_command, static) = {
488  .path = "ipfix classify table",
489  .short_help = "ipfix classify table add|del <table-index>",
491 };
492 /* *INDENT-ON* */
493 
494 static clib_error_t *
496  unformat_input_t * input,
497  vlib_cli_command_t * cmd)
498 {
501  u32 domain_id = 1;
502  u32 src_port = UDP_DST_PORT_ipfix;
503 
505  {
506  if (unformat (input, "domain %d", &domain_id))
507  ;
508  else if (unformat (input, "src-port %d", &src_port))
509  ;
510  else
511  return clib_error_return (0, "unknown input `%U'",
512  format_unformat_error, input);
513  }
514 
515  if (fcm->src_port != 0 &&
516  (fcm->domain_id != domain_id || fcm->src_port != (u16) src_port))
517  {
518  int rv = vnet_stream_change (frm, fcm->domain_id, fcm->src_port,
519  domain_id, (u16) src_port);
520  ASSERT (rv == 0);
521  }
522 
523  fcm->domain_id = domain_id;
524  fcm->src_port = (u16) src_port;
525 
526  return 0;
527 }
528 
529 /* *INDENT-OFF* */
530 VLIB_CLI_COMMAND (set_ipfix_classify_stream_command, static) = {
531  .path = "set ipfix classify stream",
532  .short_help = "set ipfix classify stream"
533  "[domain <domain-id>] [src-port <src-port>]",
535 };
536 /* *INDENT-ON* */
537 
538 static clib_error_t *
540 {
541  clib_error_t *error;
542 
543  if ((error = vlib_call_init_function (vm, flow_report_init)))
544  return error;
545 
546  return 0;
547 }
548 
550 
551 /*
552  * fd.io coding-style-patch-verification: ON
553  *
554  * Local Variables:
555  * eval: (c-set-style "gnu")
556  * End:
557  */
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:124
clib_error_t * flow_report_add_del_error_to_clib_error(int error)
Definition: flow_report.c:414
static_always_inline void clib_spinlock_unlock(clib_spinlock_t *p)
Definition: lock.h:102
static_always_inline void clib_spinlock_lock(clib_spinlock_t *p)
Definition: lock.h:80
ip4_address_t src_address
Definition: ip4_packet.h:170
static_always_inline void ipfix_classify_delete_table(u32 index)
uword as_uword
Definition: flow_report.h:74
static_always_inline u8 ipfix_classify_table_index_valid(u32 index)
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
static u32 ipfix_e_id_length(int e, u16 id, u16 length)
Definition: ipfix_packet.h:77
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:279
u32 stream_index
Definition: flow_report.h:91
int vnet_flow_report_add_del(flow_report_main_t *frm, vnet_flow_report_add_del_args_t *a, u16 *template_id)
Definition: flow_report.c:334
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
opaque_t opaque
Definition: flow_report.h:99
int i
uword ip_csum_t
Definition: ip_packet.h:219
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:450
unsigned char u8
Definition: types.h:56
double f64
Definition: types.h:142
u16 src_port
Definition: udp.api:41
flow_report_stream_t * streams
Definition: flow_report.h:114
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
clib_spinlock_t writer_lock
ip4_address_t dst_address
Definition: ip4_packet.h:170
vnet_flow_rewrite_callback_t * rewrite_callback
Definition: flow_report.h:149
vlib_frame_t * vlib_get_frame_to_node(vlib_main_t *vm, u32 to_node_index)
Definition: main.c:185
#define clib_error_return(e, args...)
Definition: error.h:99
unsigned int u32
Definition: types.h:88
#define vlib_call_init_function(vm, x)
Definition: init.h:270
#define VLIB_FRAME_SIZE
Definition: node.h:378
static int vnet_classify_entry_is_free(vnet_classify_entry_t *e)
flow_report_main_t flow_report_main
Definition: flow_report.c:21
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
flow_report_classify_main_t flow_report_classify_main
u8 * rewrite
Definition: flow_report.h:89
struct _unformat_input_t unformat_input_t
unsigned short u16
Definition: types.h:57
void vlib_put_frame_to_node(vlib_main_t *vm, u32 to_node_index, vlib_frame_t *f)
Definition: main.c:194
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:112
vl_api_address_union_t src_address
Definition: ip_types.api:97
static u32 version_length(u16 length)
Definition: ipfix_packet.h:33
static vnet_classify_entry_t * vnet_classify_entry_at_index(vnet_classify_table_t *t, vnet_classify_entry_t *e, u32 index)
u32 classify_table_index
Definition: fib_types.api:68
ipfix_classify_table_t * tables
#define UNFORMAT_END_OF_INPUT
Definition: format.h:145
u16 n_vectors
Definition: node.h:397
vlib_main_t * vm
Definition: buffer.c:323
static u32 ipfix_id_count(u16 id, u16 count)
Definition: ipfix_packet.h:184
u8 data[]
Packet data.
Definition: buffer.h:181
static clib_error_t * ipfix_classify_table_add_del_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static_always_inline ipfix_classify_table_t * ipfix_classify_add_table(void)
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:161
struct _vnet_classify_main vnet_classify_main_t
Definition: vnet_classify.h:55
#define ASSERT(truth)
static clib_error_t * set_ipfix_classify_stream_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
vlib_main_t * vlib_main
Definition: flow_report.h:136
u16 ip4_tcp_udp_compute_checksum(vlib_main_t *vm, vlib_buffer_t *p0, ip4_header_t *ip0)
Definition: ip4_forward.c:1299
u16 template_id
Definition: flow_report.h:90
vnet_classify_main_t vnet_classify_main
Definition: vnet_classify.c:29
#define foreach_ipfix_field
static u32 ipfix_set_id_length(u16 set_id, u16 length)
Definition: ipfix_packet.h:121
Definition: defs.h:47
vl_api_address_t ip
Definition: l2.api:489
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
vnet_classify_bucket_t * buckets
int vnet_stream_change(flow_report_main_t *frm, u32 old_domain_id, u16 old_src_port, u32 new_domain_id, u16 new_src_port)
Definition: flow_report.c:467
VLIB buffer representation.
Definition: buffer.h:102
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
#define ip_csum_update(sum, old, new, type, field)
Definition: ip_packet.h:269
vnet_flow_data_callback_t * flow_data_callback
Definition: flow_report.h:148
#define vnet_buffer(b)
Definition: buffer.h:365
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
u16 dst_port
Definition: udp.api:42
static clib_error_t * flow_report_classify_init(vlib_main_t *vm)
u8 ip_version_and_header_length
Definition: ip4_packet.h:138
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
static u32 vlib_buffer_alloc(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Allocate buffers into supplied array.
Definition: buffer_funcs.h:612
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:85
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:247
vlib_frame_t * ipfix_classify_send_flows(flow_report_main_t *frm, flow_report_t *fr, vlib_frame_t *f, u32 *to_next, u32 node_index)
static clib_error_t * flow_report_init(vlib_main_t *vm)
Definition: flow_report.c:598
static u16 ip_csum_fold(ip_csum_t c)
Definition: ip_packet.h:275
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
Definition: defs.h:46
static vnet_classify_entry_t * vnet_classify_get_entry(vnet_classify_table_t *t, uword offset)
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:171
u8 * ipfix_classify_template_rewrite(flow_report_main_t *frm, flow_report_t *fr, ip4_address_t *collector_address, ip4_address_t *src_address, u16 collector_port, ipfix_report_element_t *elts, u32 n_elts, u32 *stream_index)