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Vector Packet Processing
l2_output_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  */
15 
16 #include <vnet/l2/l2_classify.h>
17 #include <vnet/api_errno.h>
18 
19 /**
20  * @file
21  * @brief Layer 2 Output Classifier.
22  *
23  * @sa @ref vnet/vnet/classify/vnet_classify.c
24  * @sa @ref vnet/vnet/classify/vnet_classify.h
25  */
26 
27 typedef struct
28 {
29  /** interface handle for the ith packet */
31  /** graph arc index selected for this packet */
33  /** classifier table which provided the final result */
35  /** offset in classifier heap of the corresponding session */
38 
39 typedef struct
40 {
41  /** use-case independent main object pointer */
43  /** l2 input classifier main object pointer */
46 
47 /** Packet trace format function. */
48 static u8 *
49 format_l2_output_classify_trace (u8 * s, va_list * args)
50 {
51  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
52  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
54  va_arg (*args, l2_output_classify_trace_t *);
55 
56  s = format (s, "l2-classify: sw_if_index %d, table %d, offset %x, next %d",
58  t->next_index);
59  return s;
60 }
61 
62 /** l2 output classifier main data structure. */
64 
66 
67 #define foreach_l2_output_classify_error \
68 _(MISS, "Classify misses") \
69 _(HIT, "Classify hits") \
70 _(CHAIN_HIT, "Classify hits after chain walk") \
71 _(DROP, "L2 Classify Drops")
72 
73 typedef enum
74 {
75 #define _(sym,str) L2_OUTPUT_CLASSIFY_ERROR_##sym,
77 #undef _
80 
82 #define _(sym,string) string,
84 #undef _
85 };
86 
87 /**
88  * @brief l2 output classifier node.
89  * @node l2-output-classify
90  *
91  * This is the l2 output classifier dispatch node
92  *
93  * @param vm vlib_main_t corresponding to the current thread.
94  * @param node vlib_node_runtime_t data for this node.
95  * @param frame vlib_frame_t whose contents should be dispatched.
96  *
97  * @par Graph mechanics: buffer metadata, next index usage
98  *
99  * @em Uses:
100  * - <code>(l2_output_classify_runtime_t *)
101  * rt->classify_table_index_by_sw_if_index</code>
102  * Head of the per-interface, perprotocol classifier table chain
103  * for a specific interface. ~0 => send pkts to the next
104  * feature in the L2 feature chain.
105  * - <code>vnet_buffer(b)->sw_if_index[VLIB_TX]</code>
106  * - Indicates the @c sw_if_index value of the interface that the
107  * packet was received on.
108  * - <code>vnet_buffer (b0)->l2.feature_bitmap</code>
109  * - Used to steer packets across l2 features enabled on the interface
110  * - <code>(vnet_classify_entry_t) e0->next_index</code>
111  * - Used to steer traffic when the classifier hits on a session
112  * - <code>(vnet_classify_entry_t) e0->advance</code>
113  * - Signed quantity applied via <code>vlib_buffer_advance</code>
114  * when the classifier hits on a session
115  * - <code>(vnet_classify_table_t) t0->miss_next_index</code>
116  * - Used to steer traffic when the classifier misses
117  *
118  * @em Sets:
119  * - <code>vnet_buffer (b0)->l2_classify.table_index</code>
120  * - Classifier table index of the first classifier table in
121  * the classifier table chain
122  * - <code>vnet_buffer (b0)->l2_classify.hash</code>
123  * - Bounded-index extensible hash corresponding to the
124  * masked fields in the current packet
125  * - <code>vnet_buffer (b0)->l2.feature_bitmap</code>
126  * - Used to steer packets across l2 features enabled on the interface
127  * - <code>vnet_buffer (b0)->l2_classify.opaque_index</code>
128  * - Copied from the classifier session object upon classifier hit
129  *
130  * @em Counters:
131  * - <code>L2_OUTPUT_CLASSIFY_ERROR_MISS</code> Classifier misses
132  * - <code>L2_OUTPUT_CLASSIFY_ERROR_HIT</code> Classifier hits
133  * - <code>L2_OUTPUT_CLASSIFY_ERROR_CHAIN_HIT</code>
134  * Classifier hits in other than the first table
135  */
136 
137 static uword
139  vlib_node_runtime_t * node, vlib_frame_t * frame)
140 {
141  u32 n_left_from, *from, *to_next;
142  l2_output_classify_next_t next_index;
144  vnet_classify_main_t *vcm = cm->vnet_classify_main;
147  u32 hits = 0;
148  u32 misses = 0;
149  u32 chain_hits = 0;
150  f64 now;
151  u32 n_next_nodes;
152  u32 sw_if_index0;
153 
154  n_next_nodes = node->n_next_nodes;
155 
156  now = vlib_time_now (vm);
157 
158  n_left_from = frame->n_vectors;
159  from = vlib_frame_vector_args (frame);
160 
161  /* First pass: compute hash */
162 
163  while (n_left_from > 2)
164  {
165  vlib_buffer_t *b0, *b1;
166  u32 bi0, bi1;
167  ethernet_header_t *h0, *h1;
168  u32 sw_if_index0, sw_if_index1;
169  u16 type0, type1;
170  int type_index0, type_index1;
171  vnet_classify_table_t *t0, *t1;
172  u32 table_index0, table_index1;
173  u64 hash0, hash1;
174 
175 
176  /* prefetch next iteration */
177  {
178  vlib_buffer_t *p1, *p2;
179 
180  p1 = vlib_get_buffer (vm, from[1]);
181  p2 = vlib_get_buffer (vm, from[2]);
182 
183  vlib_prefetch_buffer_header (p1, STORE);
185  vlib_prefetch_buffer_header (p2, STORE);
187  }
188 
189  bi0 = from[0];
190  b0 = vlib_get_buffer (vm, bi0);
191  h0 = vlib_buffer_get_current (b0);
192 
193  bi1 = from[1];
194  b1 = vlib_get_buffer (vm, bi1);
195  h1 = vlib_buffer_get_current (b1);
196 
197  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
198  vnet_buffer (b0)->l2_classify.table_index = ~0;
199 
200  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
201  vnet_buffer (b1)->l2_classify.table_index = ~0;
202 
203  /* Select classifier table based on ethertype */
204  type0 = clib_net_to_host_u16 (h0->type);
205  type1 = clib_net_to_host_u16 (h1->type);
206 
207  type_index0 = (type0 == ETHERNET_TYPE_IP4)
209  type_index0 = (type0 == ETHERNET_TYPE_IP6)
210  ? L2_OUTPUT_CLASSIFY_TABLE_IP6 : type_index0;
211 
212  type_index1 = (type1 == ETHERNET_TYPE_IP4)
214  type_index1 = (type1 == ETHERNET_TYPE_IP6)
215  ? L2_OUTPUT_CLASSIFY_TABLE_IP6 : type_index1;
216 
217  vnet_buffer (b0)->l2_classify.table_index =
218  table_index0 =
219  rt->l2cm->classify_table_index_by_sw_if_index
220  [type_index0][sw_if_index0];
221 
222  if (table_index0 != ~0)
223  {
224  t0 = pool_elt_at_index (vcm->tables, table_index0);
225 
226  vnet_buffer (b0)->l2_classify.hash = hash0 =
227  vnet_classify_hash_packet (t0, (u8 *) h0);
228  vnet_classify_prefetch_bucket (t0, hash0);
229  }
230 
231  vnet_buffer (b1)->l2_classify.table_index =
232  table_index1 =
233  rt->l2cm->classify_table_index_by_sw_if_index
234  [type_index1][sw_if_index1];
235 
236  if (table_index1 != ~0)
237  {
238  t1 = pool_elt_at_index (vcm->tables, table_index1);
239 
240  vnet_buffer (b1)->l2_classify.hash = hash1 =
241  vnet_classify_hash_packet (t1, (u8 *) h1);
242  vnet_classify_prefetch_bucket (t1, hash1);
243  }
244 
245  from += 2;
246  n_left_from -= 2;
247  }
248 
249  while (n_left_from > 0)
250  {
251  vlib_buffer_t *b0;
252  u32 bi0;
253  ethernet_header_t *h0;
254  u16 type0;
255  u32 type_index0;
257  u32 table_index0;
258  u64 hash0;
259 
260  bi0 = from[0];
261  b0 = vlib_get_buffer (vm, bi0);
262  h0 = vlib_buffer_get_current (b0);
263 
264  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
265  vnet_buffer (b0)->l2_classify.table_index = ~0;
266 
267  /* Select classifier table based on ethertype */
268  type0 = clib_net_to_host_u16 (h0->type);
269 
270  type_index0 = (type0 == ETHERNET_TYPE_IP4)
272  type_index0 = (type0 == ETHERNET_TYPE_IP6)
273  ? L2_OUTPUT_CLASSIFY_TABLE_IP6 : type_index0;
274 
275  vnet_buffer (b0)->l2_classify.table_index =
276  table_index0 = rt->l2cm->classify_table_index_by_sw_if_index
277  [type_index0][sw_if_index0];
278 
279  if (table_index0 != ~0)
280  {
281  t0 = pool_elt_at_index (vcm->tables, table_index0);
282 
283  vnet_buffer (b0)->l2_classify.hash = hash0 =
284  vnet_classify_hash_packet (t0, (u8 *) h0);
285  vnet_classify_prefetch_bucket (t0, hash0);
286  }
287  from++;
288  n_left_from--;
289  }
290 
291  next_index = node->cached_next_index;
292  from = vlib_frame_vector_args (frame);
293  n_left_from = frame->n_vectors;
294 
295  while (n_left_from > 0)
296  {
297  u32 n_left_to_next;
298 
299  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
300 
301  /* Not enough load/store slots to dual loop... */
302  while (n_left_from > 0 && n_left_to_next > 0)
303  {
304  u32 bi0;
305  vlib_buffer_t *b0;
306  u32 next0 = ~0;
307  ethernet_header_t *h0;
308  u32 table_index0;
309  u64 hash0;
311  vnet_classify_entry_t *e0;
312 
313  if (PREDICT_TRUE (n_left_from > 2))
314  {
315  vlib_buffer_t *p2 = vlib_get_buffer (vm, from[2]);
316  u64 phash2;
317  u32 table_index2;
319 
320  /*
321  * Prefetch table entry two ahead. Buffer / data
322  * were prefetched above...
323  */
324  table_index2 = vnet_buffer (p2)->l2_classify.table_index;
325 
326  if (PREDICT_TRUE (table_index2 != ~0))
327  {
328  tp2 = pool_elt_at_index (vcm->tables, table_index2);
329  phash2 = vnet_buffer (p2)->l2_classify.hash;
330  vnet_classify_prefetch_entry (tp2, phash2);
331  }
332  }
333 
334  /* speculatively enqueue b0 to the current next frame */
335  bi0 = from[0];
336  to_next[0] = bi0;
337  from += 1;
338  to_next += 1;
339  n_left_from -= 1;
340  n_left_to_next -= 1;
341 
342  b0 = vlib_get_buffer (vm, bi0);
343  h0 = vlib_buffer_get_current (b0);
344  table_index0 = vnet_buffer (b0)->l2_classify.table_index;
345  e0 = 0;
346  vnet_buffer (b0)->l2_classify.opaque_index = ~0;
347 
348  if (PREDICT_TRUE (table_index0 != ~0))
349  {
350  hash0 = vnet_buffer (b0)->l2_classify.hash;
351  t0 = pool_elt_at_index (vcm->tables, table_index0);
352 
353  e0 = vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
354  if (e0)
355  {
356  vnet_buffer (b0)->l2_classify.opaque_index
357  = e0->opaque_index;
358  vlib_buffer_advance (b0, e0->advance);
359  next0 = (e0->next_index < n_next_nodes) ?
360  e0->next_index : next0;
361  hits++;
362  }
363  else
364  {
365  while (1)
366  {
367  if (t0->next_table_index != ~0)
368  t0 = pool_elt_at_index (vcm->tables,
369  t0->next_table_index);
370  else
371  {
372  next0 = (t0->miss_next_index < n_next_nodes) ?
373  t0->miss_next_index : next0;
374  misses++;
375  break;
376  }
377 
378  hash0 = vnet_classify_hash_packet (t0, (u8 *) h0);
379  e0 =
380  vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
381  if (e0)
382  {
383  vnet_buffer (b0)->l2_classify.opaque_index
384  = e0->opaque_index;
385  vlib_buffer_advance (b0, e0->advance);
386  next0 = (e0->next_index < n_next_nodes) ?
387  e0->next_index : next0;
388  hits++;
389  chain_hits++;
390  break;
391  }
392  }
393  }
394  }
395 
396  if (PREDICT_FALSE (next0 == 0))
397  b0->error = node->errors[L2_OUTPUT_CLASSIFY_ERROR_DROP];
398 
399  /* Determine the next node and remove ourself from bitmap */
400  if (PREDICT_FALSE (next0 == ~0))
401  next0 = vnet_l2_feature_next (b0, cm->l2_out_feat_next,
402  L2OUTPUT_FEAT_OUTPUT_CLASSIFY);
403  else
404  vnet_buffer (b0)->l2.feature_bitmap &=
405  ~L2OUTPUT_FEAT_OUTPUT_CLASSIFY;
406 
408  && (b0->flags & VLIB_BUFFER_IS_TRACED)))
409  {
411  vlib_add_trace (vm, node, b0, sizeof (*t));
412  t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
413  t->table_index = table_index0;
414  t->next_index = next0;
415  t->session_offset = e0 ? vnet_classify_get_offset (t0, e0) : 0;
416  }
417 
418  /* verify speculative enqueue, maybe switch current next frame */
419  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
420  to_next, n_left_to_next,
421  bi0, next0);
422  }
423 
424  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
425  }
426 
428  L2_OUTPUT_CLASSIFY_ERROR_MISS, misses);
430  L2_OUTPUT_CLASSIFY_ERROR_HIT, hits);
432  L2_OUTPUT_CLASSIFY_ERROR_CHAIN_HIT,
433  chain_hits);
434  return frame->n_vectors;
435 }
436 
437 /* *INDENT-OFF* */
439  .function = l2_output_classify_node_fn,
440  .name = "l2-output-classify",
441  .vector_size = sizeof (u32),
442  .format_trace = format_l2_output_classify_trace,
443  .type = VLIB_NODE_TYPE_INTERNAL,
444 
446  .error_strings = l2_output_classify_error_strings,
447 
448  .runtime_data_bytes = sizeof (l2_output_classify_runtime_t),
449 
450  .n_next_nodes = L2_OUTPUT_CLASSIFY_N_NEXT,
451 
452  /* edit / add dispositions here */
453  .next_nodes = {
454  [L2_OUTPUT_CLASSIFY_NEXT_DROP] = "error-drop",
455  },
456 };
457 /* *INDENT-ON* */
458 
461 
462 /** l2 output classsifier feature initialization. */
463 clib_error_t *
465 {
468 
470 
471  cm->vlib_main = vm;
472  cm->vnet_main = vnet_get_main ();
473  cm->vnet_classify_main = &vnet_classify_main;
474 
475  /* Initialize the feature next-node indexes */
480  cm->l2_out_feat_next);
481  rt->l2cm = cm;
482  rt->vcm = cm->vnet_classify_main;
483 
484  return 0;
485 }
486 
488 
489 clib_error_t *
491 {
494 
496 
497  rt->l2cm = cm;
498  rt->vcm = cm->vnet_classify_main;
499 
500  return 0;
501 }
502 
504 
505 /** Enable/disable l2 input classification on a specific interface. */
506 void
507 vnet_l2_output_classify_enable_disable (u32 sw_if_index, int enable_disable)
508 {
509 
510  l2output_intf_bitmap_enable (sw_if_index, L2OUTPUT_FEAT_OUTPUT_CLASSIFY,
511  (u32) enable_disable);
512 }
513 
514 /** @brief Set l2 per-protocol, per-interface output classification tables.
515  *
516  * @param sw_if_index interface handle
517  * @param ip4_table_index ip4 classification table index, or ~0
518  * @param ip6_table_index ip6 classification table index, or ~0
519  * @param other_table_index non-ip4, non-ip6 classification table index,
520  * or ~0
521  * @returns 0 on success, VNET_API_ERROR_NO_SUCH_TABLE, TABLE2, TABLE3
522  * if the indicated (non-~0) table does not exist.
523  */
524 
525 int
527  u32 ip4_table_index,
528  u32 ip6_table_index,
529  u32 other_table_index)
530 {
532  vnet_classify_main_t *vcm = cm->vnet_classify_main;
533 
534  /* Assume that we've validated sw_if_index in the API layer */
535 
536  if (ip4_table_index != ~0 &&
537  pool_is_free_index (vcm->tables, ip4_table_index))
538  return VNET_API_ERROR_NO_SUCH_TABLE;
539 
540  if (ip6_table_index != ~0 &&
541  pool_is_free_index (vcm->tables, ip6_table_index))
542  return VNET_API_ERROR_NO_SUCH_TABLE2;
543 
544  if (other_table_index != ~0 &&
545  pool_is_free_index (vcm->tables, other_table_index))
546  return VNET_API_ERROR_NO_SUCH_TABLE3;
547 
549  (cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_IP4],
550  sw_if_index);
551 
553  (cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_IP6],
554  sw_if_index);
555 
557  (cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_OTHER],
558  sw_if_index);
559 
560  cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_IP4]
561  [sw_if_index] = ip4_table_index;
562 
563  cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_IP6]
564  [sw_if_index] = ip6_table_index;
565 
566  cm->classify_table_index_by_sw_if_index[L2_OUTPUT_CLASSIFY_TABLE_OTHER]
567  [sw_if_index] = other_table_index;
568 
569  return 0;
570 }
571 
572 static clib_error_t *
574  unformat_input_t * input,
575  vlib_cli_command_t * cmd)
576 {
577  vnet_main_t *vnm = vnet_get_main ();
578  u32 sw_if_index = ~0;
579  u32 ip4_table_index = ~0;
580  u32 ip6_table_index = ~0;
581  u32 other_table_index = ~0;
582  int rv;
583 
585  {
586  if (unformat (input, "intfc %U", unformat_vnet_sw_interface,
587  vnm, &sw_if_index))
588  ;
589  else if (unformat (input, "ip4-table %d", &ip4_table_index))
590  ;
591  else if (unformat (input, "ip6-table %d", &ip6_table_index))
592  ;
593  else if (unformat (input, "other-table %d", &other_table_index))
594  ;
595  else
596  break;
597  }
598 
599  if (sw_if_index == ~0)
600  return clib_error_return (0, "interface must be specified");
601 
602 
603  if (ip4_table_index == ~0 && ip6_table_index == ~0
604  && other_table_index == ~0)
605  {
606  vlib_cli_output (vm, "L2 classification disabled");
607  vnet_l2_output_classify_enable_disable (sw_if_index, 0 /* enable */ );
608  return 0;
609  }
610 
611  rv = vnet_l2_output_classify_set_tables (sw_if_index, ip4_table_index,
612  ip6_table_index,
613  other_table_index);
614  switch (rv)
615  {
616  case 0:
617  vnet_l2_output_classify_enable_disable (sw_if_index, 1 /* enable */ );
618  break;
619 
620  default:
621  return clib_error_return (0, "vnet_l2_output_classify_set_tables: %d",
622  rv);
623  break;
624  }
625 
626  return 0;
627 }
628 
629 /*?
630  * Configure Layer 2 output classification.
631  *
632  * @cliexpar
633  * @cliexstart{set interface l2 output classify intfc <interface-name> [ip4-table <index>] [ip6-table <index>] [other-table <index>]}
634  * @cliexend
635  * @todo This is incomplete. This needs a detailed description and a
636  * practical example.
637 ?*/
638 /* *INDENT-OFF* */
639 VLIB_CLI_COMMAND (int_l2_output_classify_cli, static) = {
640  .path = "set interface l2 output classify",
641  .short_help =
642  "set interface l2 output classify intfc <<interface-name>> [ip4-table <n>]\n"
643  " [ip6-table <n>] [other-table <n>]",
645 };
646 /* *INDENT-ON* */
647 
648 /*
649  * fd.io coding-style-patch-verification: ON
650  *
651  * Local Variables:
652  * eval: (c-set-style "gnu")
653  * End:
654  */
u64 vnet_classify_hash_packet(vnet_classify_table_t *t, u8 *h)
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:432
int vnet_l2_output_classify_set_tables(u32 sw_if_index, u32 ip4_table_index, u32 ip6_table_index, u32 other_table_index)
Set l2 per-protocol, per-interface output classification tables.
l2_output_classify_main_t * l2cm
l2 input classifier main object pointer
#define CLIB_UNUSED(x)
Definition: clib.h:79
char ** l2output_get_feat_names(void)
Definition: l2_output.c:38
u8 runtime_data[0]
Function dependent node-runtime data.
Definition: node.h:464
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
VLIB_NODE_FUNCTION_MULTIARCH(l2_output_classify_node, l2_output_classify_node_fn)
#define PREDICT_TRUE(x)
Definition: clib.h:106
void vnet_l2_output_classify_enable_disable(u32 sw_if_index, int enable_disable)
Enable/disable l2 input classification on a specific interface.
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:224
clib_error_t * l2_output_classify_init(vlib_main_t *vm)
l2 output classsifier feature initialization.
static uword l2_output_classify_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
l2 output classifier node.
struct _vlib_node_registration vlib_node_registration_t
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
unformat_function_t unformat_vnet_sw_interface
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:415
static u32 vnet_l2_feature_next(vlib_buffer_t *b, u32 *next_nodes, u32 feat_bit)
Return the graph node index for the feature corresponding to the next set bit after clearing the curr...
Definition: feat_bitmap.h:94
static char * l2_output_classify_error_strings[]
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:171
#define clib_error_return(e, args...)
Definition: error.h:99
unsigned long u64
Definition: types.h:89
static void vnet_classify_prefetch_bucket(vnet_classify_table_t *t, u64 hash)
void l2output_intf_bitmap_enable(u32 sw_if_index, u32 feature_bitmap, u32 enable)
Enable (or disable) the feature in the bitmap for the given interface.
Definition: l2_output.c:686
static void vnet_classify_prefetch_entry(vnet_classify_table_t *t, u64 hash)
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:459
static u8 * format_l2_output_classify_trace(u8 *s, va_list *args)
Packet trace format function.
u32 sw_if_index
interface handle for the ith packet
struct _l2_classify_main l2_output_classify_main_t
Definition: l2_classify.h:84
l2_output_classify_main_t l2_output_classify_main
l2 output classifier main data structure.
struct _unformat_input_t unformat_input_t
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:195
VLIB_WORKER_INIT_FUNCTION(l2_output_classify_worker_init)
static void * vlib_node_get_runtime_data(vlib_main_t *vm, u32 node_index)
Get node runtime private data by node index.
Definition: node_funcs.h:110
#define PREDICT_FALSE(x)
Definition: clib.h:105
u32 node_index
Node index.
Definition: node.h:437
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
Definition: buffer_node.h:218
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
Definition: node_funcs.h:364
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:113
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1158
l2_output_classify_next_t
Definition: l2_classify.h:55
clib_error_t * l2_output_classify_worker_init(vlib_main_t *vm)
static uword vnet_classify_get_offset(vnet_classify_table_t *t, vnet_classify_entry_t *v)
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
u16 n_vectors
Definition: node.h:344
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:82
vlib_main_t * vm
Definition: buffer.c:283
static void feat_bitmap_init_next_nodes(vlib_main_t *vm, u32 node_index, u32 num_features, char **feat_names, u32 *next_nodes)
Initialize the feature next-node indexes of a graph node.
Definition: feat_bitmap.h:43
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:93
vnet_classify_main_t * vcm
use-case independent main object pointer
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:268
#define ARRAY_LEN(x)
Definition: clib.h:59
void vlib_put_next_frame(vlib_main_t *vm, vlib_node_runtime_t *r, u32 next_index, u32 n_vectors_left)
Release pointer to next frame vector data.
Definition: main.c:454
u32 table_index
classifier table which provided the final result
#define foreach_l2_output_classify_error
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
struct _vnet_classify_main vnet_classify_main_t
Definition: vnet_classify.h:73
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:456
unsigned int u32
Definition: types.h:88
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:208
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:259
vnet_classify_main_t vnet_classify_main
Definition: vnet_classify.c:22
static clib_error_t * int_l2_output_classify_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
l2_output_classify_error_t
u64 uword
Definition: types.h:112
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:55
Definition: defs.h:47
unsigned short u16
Definition: types.h:57
double f64
Definition: types.h:142
unsigned char u8
Definition: types.h:56
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:267
u32 session_offset
offset in classifier heap of the corresponding session
vlib_node_registration_t l2_output_classify_node
(constructor) VLIB_REGISTER_NODE (l2_output_classify_node)
#define vnet_buffer(b)
Definition: buffer.h:326
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
u32 next_index
graph arc index selected for this packet
u8 data[0]
Packet data.
Definition: buffer.h:159
u16 flags
Copy of main node flags.
Definition: node.h:450
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:67
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:75
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:680
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:57
vnet_classify_entry_t * vnet_classify_find_entry(vnet_classify_table_t *t, u8 *h, u64 hash, f64 now)
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169