FD.io VPP  v18.07-34-g55fbdb9
Vector Packet Processing
l2_input_classify.c
Go to the documentation of this file.
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  * l2_classify.c
17  */
18 
19 #include <vnet/l2/l2_classify.h>
20 #include <vnet/api_errno.h>
21 
22 /**
23  * @file
24  * @brief L2 input classifier.
25  *
26  * @sa @ref vnet/vnet/classify/vnet_classify.c
27  * @sa @ref vnet/vnet/classify/vnet_classify.h
28  */
29 
30 /**
31  * @brief l2_input_classifier packet trace record.
32  */
33 typedef struct
34 {
35  /** interface handle for the ith packet */
37  /** graph arc index selected for this packet */
39  /** classifier table which provided the final result */
41  /** offset in classifier heap of the corresponding session */
44 
45 /**
46  * @brief vlib node runtime.
47  */
48 typedef struct
49 {
50  /** use-case independent main object pointer */
52  /** l2 input classifier main object pointer */
55 
56 /** Packet trace format function. */
57 static u8 *
58 format_l2_input_classify_trace (u8 * s, va_list * args)
59 {
60  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
61  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
63 
64  s = format (s, "l2-classify: sw_if_index %d, table %d, offset %x, next %d",
66  t->next_index);
67  return s;
68 }
69 
70 /** l2 input classifier main data structure. */
72 
74 
75 #define foreach_l2_input_classify_error \
76 _(MISS, "Classify misses") \
77 _(HIT, "Classify hits") \
78 _(CHAIN_HIT, "Classify hits after chain walk") \
79 _(DROP, "L2 Classify Drops")
80 
81 typedef enum
82 {
83 #define _(sym,str) L2_INPUT_CLASSIFY_ERROR_##sym,
85 #undef _
88 
90 #define _(sym,string) string,
92 #undef _
93 };
94 
95 /**
96  * @brief l2 input classifier node.
97  * @node l2-input-classify
98  *
99  * This is the l2 input classifier dispatch node
100  *
101  * @param vm vlib_main_t corresponding to the current thread.
102  * @param node vlib_node_runtime_t data for this node.
103  * @param frame vlib_frame_t whose contents should be dispatched.
104  *
105  * @par Graph mechanics: buffer metadata, next index usage
106  *
107  * @em Uses:
108  * - <code>(l2_input_classify_runtime_t *)
109  * rt->classify_table_index_by_sw_if_index</code>
110  * - Head of the per-interface, per-protocol classifier table chain
111  * for a specific interface.
112  * - @c ~0 => send pkts to the next feature in the L2 feature chain.
113  * - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code>
114  * - Indicates the @c sw_if_index value of the interface that the
115  * packet was received on.
116  * - <code>vnet_buffer(b0)->l2.feature_bitmap</code>
117  * - Used to steer packets across l2 features enabled on the interface
118  * - <code>(vnet_classify_entry_t) e0->next_index</code>
119  * - Used to steer traffic when the classifier hits on a session
120  * - <code>(vnet_classify_entry_t) e0->advance</code>
121  * - Signed quantity applied via <code>vlib_buffer_advance</code>
122  * when the classifier hits on a session
123  * - <code>(vnet_classify_table_t) t0->miss_next_index</code>
124  * - Used to steer traffic when the classifier misses
125  *
126  * @em Sets:
127  * - <code>vnet_buffer (b0)->l2_classify.table_index</code>
128  * - Classifier table index of the first classifier table in
129  * the classifier table chain
130  * - <code>vnet_buffer (b0)->l2_classify.hash</code>
131  * - Bounded-index extensible hash corresponding to the
132  * masked fields in the current packet
133  * - <code>vnet_buffer (b0)->l2.feature_bitmap</code>
134  * - Used to steer packets across l2 features enabled on the interface
135  * - <code>vnet_buffer (b0)->l2_classify.opaque_index</code>
136  * - Copied from the classifier session object upon classifier hit
137  *
138  * @em Counters:
139  * - <code>L2_INPUT_CLASSIFY_ERROR_MISS</code> Classifier misses
140  * - <code>L2_INPUT_CLASSIFY_ERROR_HIT</code> Classifier hits
141  * - <code>L2_INPUT_CLASSIFY_ERROR_CHAIN_HIT</code>
142  * Classifier hits in other than the first table
143  */
144 
145 static uword
147  vlib_node_runtime_t * node, vlib_frame_t * frame)
148 {
149  u32 n_left_from, *from, *to_next;
150  l2_input_classify_next_t next_index;
152  vnet_classify_main_t *vcm = cm->vnet_classify_main;
155  u32 hits = 0;
156  u32 misses = 0;
157  u32 chain_hits = 0;
158  f64 now;
159  u32 n_next_nodes;
160 
161  n_next_nodes = node->n_next_nodes;
162 
163  now = vlib_time_now (vm);
164 
165  n_left_from = frame->n_vectors;
166  from = vlib_frame_vector_args (frame);
167 
168  /* First pass: compute hash */
169 
170  while (n_left_from >= 4)
171  {
172  vlib_buffer_t *b0, *b1;
173  u32 bi0, bi1;
174  ethernet_header_t *h0, *h1;
175  u32 sw_if_index0, sw_if_index1;
176  u16 type0, type1;
177  int type_index0, type_index1;
178  vnet_classify_table_t *t0, *t1;
179  u32 table_index0, table_index1;
180  u64 hash0, hash1;
181 
182 
183  /* prefetch next iteration */
184  {
185  vlib_buffer_t *p2, *p3;
186 
187  p2 = vlib_get_buffer (vm, from[2]);
188  p3 = vlib_get_buffer (vm, from[3]);
189 
190  vlib_prefetch_buffer_header (p2, STORE);
192  vlib_prefetch_buffer_header (p3, STORE);
194  }
195 
196  bi0 = from[0];
197  b0 = vlib_get_buffer (vm, bi0);
198  h0 = vlib_buffer_get_current (b0);
199 
200  bi1 = from[1];
201  b1 = vlib_get_buffer (vm, bi1);
202  h1 = vlib_buffer_get_current (b1);
203 
204  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
205  vnet_buffer (b0)->l2_classify.table_index = ~0;
206 
207  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
208  vnet_buffer (b1)->l2_classify.table_index = ~0;
209 
210  /* Select classifier table based on ethertype */
211  type0 = clib_net_to_host_u16 (h0->type);
212  type1 = clib_net_to_host_u16 (h1->type);
213 
214  type_index0 = (type0 == ETHERNET_TYPE_IP4)
216  type_index0 = (type0 == ETHERNET_TYPE_IP6)
217  ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index0;
218 
219  type_index1 = (type1 == ETHERNET_TYPE_IP4)
221  type_index1 = (type1 == ETHERNET_TYPE_IP6)
222  ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index1;
223 
224  vnet_buffer (b0)->l2_classify.table_index =
225  table_index0 =
226  rt->l2cm->classify_table_index_by_sw_if_index
227  [type_index0][sw_if_index0];
228 
229  if (table_index0 != ~0)
230  {
231  t0 = pool_elt_at_index (vcm->tables, table_index0);
232 
233  vnet_buffer (b0)->l2_classify.hash = hash0 =
234  vnet_classify_hash_packet (t0, (u8 *) h0);
235  vnet_classify_prefetch_bucket (t0, hash0);
236  }
237 
238  vnet_buffer (b1)->l2_classify.table_index =
239  table_index1 =
240  rt->l2cm->classify_table_index_by_sw_if_index
241  [type_index1][sw_if_index1];
242 
243  if (table_index1 != ~0)
244  {
245  t1 = pool_elt_at_index (vcm->tables, table_index1);
246 
247  vnet_buffer (b1)->l2_classify.hash = hash1 =
248  vnet_classify_hash_packet (t1, (u8 *) h1);
249  vnet_classify_prefetch_bucket (t1, hash1);
250  }
251 
252  from += 2;
253  n_left_from -= 2;
254  }
255 
256  while (n_left_from > 0)
257  {
258  vlib_buffer_t *b0;
259  u32 bi0;
260  ethernet_header_t *h0;
261  u32 sw_if_index0;
262  u16 type0;
263  u32 type_index0;
265  u32 table_index0;
266  u64 hash0;
267 
268  bi0 = from[0];
269  b0 = vlib_get_buffer (vm, bi0);
270  h0 = vlib_buffer_get_current (b0);
271 
272  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
273  vnet_buffer (b0)->l2_classify.table_index = ~0;
274 
275  /* Select classifier table based on ethertype */
276  type0 = clib_net_to_host_u16 (h0->type);
277 
278  type_index0 = (type0 == ETHERNET_TYPE_IP4)
280  type_index0 = (type0 == ETHERNET_TYPE_IP6)
281  ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index0;
282 
283  vnet_buffer (b0)->l2_classify.table_index =
284  table_index0 = rt->l2cm->classify_table_index_by_sw_if_index
285  [type_index0][sw_if_index0];
286 
287  if (table_index0 != ~0)
288  {
289  t0 = pool_elt_at_index (vcm->tables, table_index0);
290 
291  vnet_buffer (b0)->l2_classify.hash = hash0 =
292  vnet_classify_hash_packet (t0, (u8 *) h0);
293  vnet_classify_prefetch_bucket (t0, hash0);
294  }
295  from++;
296  n_left_from--;
297  }
298 
299  next_index = node->cached_next_index;
300  from = vlib_frame_vector_args (frame);
301  n_left_from = frame->n_vectors;
302 
303  while (n_left_from > 0)
304  {
305  u32 n_left_to_next;
306 
307  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
308 
309  /* Not enough load/store slots to dual loop... */
310  while (n_left_from > 0 && n_left_to_next > 0)
311  {
312  u32 bi0;
313  vlib_buffer_t *b0;
314  u32 next0 = ~0; /* next l2 input feature, please... */
315  ethernet_header_t *h0;
316  u32 table_index0;
317  u64 hash0;
319  vnet_classify_entry_t *e0;
320 
321  if (PREDICT_TRUE (n_left_from > 2))
322  {
323  vlib_buffer_t *p2 = vlib_get_buffer (vm, from[2]);
324  u64 phash2;
325  u32 table_index2;
327 
328  /*
329  * Prefetch table entry two ahead. Buffer / data
330  * were prefetched above...
331  */
332  table_index2 = vnet_buffer (p2)->l2_classify.table_index;
333 
334  if (PREDICT_TRUE (table_index2 != ~0))
335  {
336  tp2 = pool_elt_at_index (vcm->tables, table_index2);
337  phash2 = vnet_buffer (p2)->l2_classify.hash;
338  vnet_classify_prefetch_entry (tp2, phash2);
339  }
340  }
341 
342  /* speculatively enqueue b0 to the current next frame */
343  bi0 = from[0];
344  to_next[0] = bi0;
345  from += 1;
346  to_next += 1;
347  n_left_from -= 1;
348  n_left_to_next -= 1;
349 
350  b0 = vlib_get_buffer (vm, bi0);
351  h0 = vlib_buffer_get_current (b0);
352  table_index0 = vnet_buffer (b0)->l2_classify.table_index;
353  e0 = 0;
354  vnet_buffer (b0)->l2_classify.opaque_index = ~0;
355 
356  if (PREDICT_TRUE (table_index0 != ~0))
357  {
358  hash0 = vnet_buffer (b0)->l2_classify.hash;
359  t0 = pool_elt_at_index (vcm->tables, table_index0);
360 
361  e0 = vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
362  if (e0)
363  {
364  vnet_buffer (b0)->l2_classify.opaque_index
365  = e0->opaque_index;
366  vlib_buffer_advance (b0, e0->advance);
367  next0 = (e0->next_index < n_next_nodes) ?
368  e0->next_index : next0;
369  hits++;
370  }
371  else
372  {
373  while (1)
374  {
375  if (t0->next_table_index != ~0)
376  t0 = pool_elt_at_index (vcm->tables,
377  t0->next_table_index);
378  else
379  {
380  next0 = (t0->miss_next_index < n_next_nodes) ?
381  t0->miss_next_index : next0;
382  misses++;
383  break;
384  }
385 
386  hash0 = vnet_classify_hash_packet (t0, (u8 *) h0);
387  e0 =
388  vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
389  if (e0)
390  {
391  vnet_buffer (b0)->l2_classify.opaque_index
392  = e0->opaque_index;
393  vlib_buffer_advance (b0, e0->advance);
394  next0 = (e0->next_index < n_next_nodes) ?
395  e0->next_index : next0;
396  hits++;
397  chain_hits++;
398  break;
399  }
400  }
401  }
402  }
403 
404  if (PREDICT_FALSE (next0 == 0))
405  b0->error = node->errors[L2_INPUT_CLASSIFY_ERROR_DROP];
406 
407  /* Determine the next node and remove ourself from bitmap */
408  if (PREDICT_TRUE (next0 == ~0))
409  next0 = vnet_l2_feature_next (b0, cm->l2_inp_feat_next,
410  L2INPUT_FEAT_INPUT_CLASSIFY);
411  else
412  vnet_buffer (b0)->l2.feature_bitmap &=
413  ~L2INPUT_FEAT_INPUT_CLASSIFY;
414 
416  && (b0->flags & VLIB_BUFFER_IS_TRACED)))
417  {
419  vlib_add_trace (vm, node, b0, sizeof (*t));
420  t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
421  t->table_index = table_index0;
422  t->next_index = next0;
423  t->session_offset = e0 ? vnet_classify_get_offset (t0, e0) : 0;
424  }
425 
426  /* verify speculative enqueue, maybe switch current next frame */
427  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
428  to_next, n_left_to_next,
429  bi0, next0);
430  }
431 
432  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
433  }
434 
436  L2_INPUT_CLASSIFY_ERROR_MISS, misses);
438  L2_INPUT_CLASSIFY_ERROR_HIT, hits);
440  L2_INPUT_CLASSIFY_ERROR_CHAIN_HIT, chain_hits);
441  return frame->n_vectors;
442 }
443 
444 /* *INDENT-OFF* */
446  .function = l2_input_classify_node_fn,
447  .name = "l2-input-classify",
448  .vector_size = sizeof (u32),
449  .format_trace = format_l2_input_classify_trace,
450  .type = VLIB_NODE_TYPE_INTERNAL,
451 
453  .error_strings = l2_input_classify_error_strings,
454 
455  .runtime_data_bytes = sizeof (l2_input_classify_runtime_t),
456 
457  .n_next_nodes = L2_INPUT_CLASSIFY_N_NEXT,
458 
459  /* edit / add dispositions here */
460  .next_nodes = {
461  [L2_INPUT_CLASSIFY_NEXT_DROP] = "error-drop",
462  [L2_INPUT_CLASSIFY_NEXT_ETHERNET_INPUT] = "ethernet-input-not-l2",
463  [L2_INPUT_CLASSIFY_NEXT_IP4_INPUT] = "ip4-input",
464  [L2_INPUT_CLASSIFY_NEXT_IP6_INPUT] = "ip6-input",
465  [L2_INPUT_CLASSIFY_NEXT_LI] = "li-hit",
466  },
467 };
468 /* *INDENT-ON* */
469 
472 
473 /** l2 input classsifier feature initialization. */
474 clib_error_t *
476 {
479 
481 
482  cm->vlib_main = vm;
483  cm->vnet_main = vnet_get_main ();
484  cm->vnet_classify_main = &vnet_classify_main;
485 
486  /* Initialize the feature next-node indexes */
491  cm->l2_inp_feat_next);
492  rt->l2cm = cm;
493  rt->vcm = cm->vnet_classify_main;
494 
495  return 0;
496 }
497 
499 
500 clib_error_t *
502 {
505 
507 
508  rt->l2cm = cm;
509  rt->vcm = cm->vnet_classify_main;
510 
511  return 0;
512 }
513 
515 
516 /** Enable/disable l2 input classification on a specific interface. */
517 void
518 vnet_l2_input_classify_enable_disable (u32 sw_if_index, int enable_disable)
519 {
520  l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_INPUT_CLASSIFY,
521  (u32) enable_disable);
522 }
523 
524 /** @brief Set l2 per-protocol, per-interface input classification tables.
525  *
526  * @param sw_if_index interface handle
527  * @param ip4_table_index ip4 classification table index, or ~0
528  * @param ip6_table_index ip6 classification table index, or ~0
529  * @param other_table_index non-ip4, non-ip6 classification table index,
530  * or ~0
531  * @returns 0 on success, VNET_API_ERROR_NO_SUCH_TABLE, TABLE2, TABLE3
532  * if the indicated (non-~0) table does not exist.
533  */
534 
535 int
537  u32 ip4_table_index,
538  u32 ip6_table_index, u32 other_table_index)
539 {
541  vnet_classify_main_t *vcm = cm->vnet_classify_main;
542 
543  /* Assume that we've validated sw_if_index in the API layer */
544 
545  if (ip4_table_index != ~0 &&
546  pool_is_free_index (vcm->tables, ip4_table_index))
547  return VNET_API_ERROR_NO_SUCH_TABLE;
548 
549  if (ip6_table_index != ~0 &&
550  pool_is_free_index (vcm->tables, ip6_table_index))
551  return VNET_API_ERROR_NO_SUCH_TABLE2;
552 
553  if (other_table_index != ~0 &&
554  pool_is_free_index (vcm->tables, other_table_index))
555  return VNET_API_ERROR_NO_SUCH_TABLE3;
556 
558  (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP4],
559  sw_if_index);
560 
562  (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP6],
563  sw_if_index);
564 
566  (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_OTHER],
567  sw_if_index);
568 
569  cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP4]
570  [sw_if_index] = ip4_table_index;
571 
572  cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP6]
573  [sw_if_index] = ip6_table_index;
574 
575  cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_OTHER]
576  [sw_if_index] = other_table_index;
577 
578  return 0;
579 }
580 
581 static clib_error_t *
583  unformat_input_t * input,
584  vlib_cli_command_t * cmd)
585 {
586  vnet_main_t *vnm = vnet_get_main ();
587  u32 sw_if_index = ~0;
588  u32 ip4_table_index = ~0;
589  u32 ip6_table_index = ~0;
590  u32 other_table_index = ~0;
591  int rv;
592 
594  {
595  if (unformat (input, "intfc %U", unformat_vnet_sw_interface,
596  vnm, &sw_if_index))
597  ;
598  else if (unformat (input, "ip4-table %d", &ip4_table_index))
599  ;
600  else if (unformat (input, "ip6-table %d", &ip6_table_index))
601  ;
602  else if (unformat (input, "other-table %d", &other_table_index))
603  ;
604  else
605  break;
606  }
607 
608  if (sw_if_index == ~0)
609  return clib_error_return (0, "interface must be specified");
610 
611 
612  if (ip4_table_index == ~0 && ip6_table_index == ~0
613  && other_table_index == ~0)
614  {
615  vlib_cli_output (vm, "L2 classification disabled");
616  vnet_l2_input_classify_enable_disable (sw_if_index, 0 /* enable */ );
617  return 0;
618  }
619 
620  rv = vnet_l2_input_classify_set_tables (sw_if_index, ip4_table_index,
621  ip6_table_index, other_table_index);
622  switch (rv)
623  {
624  case 0:
625  vnet_l2_input_classify_enable_disable (sw_if_index, 1 /* enable */ );
626  break;
627 
628  default:
629  return clib_error_return (0, "vnet_l2_input_classify_set_tables: %d",
630  rv);
631  break;
632  }
633 
634  return 0;
635 }
636 
637 /*?
638  * Configure l2 input classification.
639  *
640  * @cliexpar
641  * @cliexstart{set interface l2 input classify intfc <interface-name> [ip4-table <index>] [ip6-table <index>] [other-table <index>]}
642  * @cliexend
643  * @todo This is incomplete. This needs a detailed description and a
644  * practical example.
645  ?*/
646 /* *INDENT-OFF* */
647 VLIB_CLI_COMMAND (int_l2_input_classify_cli, static) = {
648  .path = "set interface l2 input classify",
649  .short_help =
650  "set interface l2 input classify intfc <interface-name> [ip4-table <n>]\n"
651  " [ip6-table <n>] [other-table <n>]",
653 };
654 /* *INDENT-ON* */
655 
656 /*
657  * fd.io coding-style-patch-verification: ON
658  *
659  * Local Variables:
660  * eval: (c-set-style "gnu")
661  * End:
662  */
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:437
vlib_node_registration_t l2_input_classify_node
(constructor) VLIB_REGISTER_NODE (l2_input_classify_node)
u32 table_index
classifier table which provided the final result
static u8 * format_l2_input_classify_trace(u8 *s, va_list *args)
Packet trace format function.
clib_error_t * l2_input_classify_init(vlib_main_t *vm)
l2 input classsifier feature initialization.
#define CLIB_UNUSED(x)
Definition: clib.h:79
static uword l2_input_classify_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
l2 input classifier node.
VLIB_WORKER_INIT_FUNCTION(l2_input_classify_worker_init)
u8 runtime_data[0]
Function dependent node-runtime data.
Definition: node.h:500
static char * l2_input_classify_error_strings[]
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
#define PREDICT_TRUE(x)
Definition: clib.h:106
unsigned long u64
Definition: types.h:89
#define foreach_l2_input_classify_error
clib_error_t * l2_input_classify_worker_init(vlib_main_t *vm)
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:225
static clib_error_t * int_l2_input_classify_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
unformat_function_t unformat_vnet_sw_interface
l2_input_classify_error_t
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:451
l2_input_classify_main_t * l2cm
l2 input classifier main object pointer
unsigned char u8
Definition: types.h:56
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
double f64
Definition: types.h:142
void vnet_l2_input_classify_enable_disable(u32 sw_if_index, int enable_disable)
Enable/disable l2 input classification on a specific interface.
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:156
l2_input_classify_main_t l2_input_classify_main
l2 input classifier main data structure.
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:184
#define clib_error_return(e, args...)
Definition: error.h:99
unsigned int u32
Definition: types.h:88
static void vnet_classify_prefetch_bucket(vnet_classify_table_t *t, u64 hash)
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:464
l2_input_classifier packet trace record.
int vnet_l2_input_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 input classification tables.
struct _unformat_input_t unformat_input_t
u32 next_index
graph arc index selected for this packet
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:202
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:473
#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:135
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1168
static uword vnet_classify_get_offset(vnet_classify_table_t *t, vnet_classify_entry_t *v)
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:153
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
u16 n_vectors
Definition: node.h:380
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:77
vlib_main_t * vm
Definition: buffer.c:294
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
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:271
#define ARRAY_LEN(x)
Definition: clib.h:59
u32 sw_if_index
interface handle for the ith packet
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
char ** l2input_get_feat_names(void)
Return an array of strings containing graph node names of each feature.
Definition: l2_input.c:60
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
struct _vnet_classify_main vnet_classify_main_t
Definition: vnet_classify.h:70
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:492
l2_input_classify_next_t
Definition: l2_classify.h:37
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:215
vnet_classify_main_t vnet_classify_main
Definition: vnet_classify.c:22
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
u32 l2input_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_input.c:520
struct _vlib_node_registration vlib_node_registration_t
struct _l2_classify_main l2_input_classify_main_t
u32 session_offset
offset in classifier heap of the corresponding session
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:267
VLIB_NODE_FUNCTION_MULTIARCH(l2_input_classify_node, l2_input_classify_node_fn)
#define vnet_buffer(b)
Definition: buffer.h:360
u8 data[0]
Packet data.
Definition: buffer.h:172
u16 flags
Copy of main node flags.
Definition: node.h:486
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:295
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:62
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:111
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:681
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
Definition: defs.h:46
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170