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Vector Packet Processing
l2_input_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  * 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 
71 
72 #ifndef CLIB_MARCH_VARIANT
73 /** l2 input classifier main data structure. */
75 #endif /* CLIB_MARCH_VARIANT */
76 
77 #define foreach_l2_input_classify_error \
78 _(MISS, "Classify misses") \
79 _(HIT, "Classify hits") \
80 _(CHAIN_HIT, "Classify hits after chain walk") \
81 _(DROP, "L2 Classify Drops")
82 
83 typedef enum
84 {
85 #define _(sym,str) L2_INPUT_CLASSIFY_ERROR_##sym,
87 #undef _
90 
92 #define _(sym,string) string,
94 #undef _
95 };
96 
97 /**
98  * @brief l2 input classifier node.
99  * @node l2-input-classify
100  *
101  * This is the l2 input classifier dispatch node
102  *
103  * @param vm vlib_main_t corresponding to the current thread.
104  * @param node vlib_node_runtime_t data for this node.
105  * @param frame vlib_frame_t whose contents should be dispatched.
106  *
107  * @par Graph mechanics: buffer metadata, next index usage
108  *
109  * @em Uses:
110  * - <code>(l2_input_classify_runtime_t *)
111  * rt->classify_table_index_by_sw_if_index</code>
112  * - Head of the per-interface, per-protocol classifier table chain
113  * for a specific interface.
114  * - @c ~0 => send pkts to the next feature in the L2 feature chain.
115  * - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code>
116  * - Indicates the @c sw_if_index value of the interface that the
117  * packet was received on.
118  * - <code>vnet_buffer(b0)->l2.feature_bitmap</code>
119  * - Used to steer packets across l2 features enabled on the interface
120  * - <code>(vnet_classify_entry_t) e0->next_index</code>
121  * - Used to steer traffic when the classifier hits on a session
122  * - <code>(vnet_classify_entry_t) e0->advance</code>
123  * - Signed quantity applied via <code>vlib_buffer_advance</code>
124  * when the classifier hits on a session
125  * - <code>(vnet_classify_table_t) t0->miss_next_index</code>
126  * - Used to steer traffic when the classifier misses
127  *
128  * @em Sets:
129  * - <code>vnet_buffer (b0)->l2_classify.table_index</code>
130  * - Classifier table index of the first classifier table in
131  * the classifier table chain
132  * - <code>vnet_buffer (b0)->l2_classify.hash</code>
133  * - Bounded-index extensible hash corresponding to the
134  * masked fields in the current packet
135  * - <code>vnet_buffer (b0)->l2.feature_bitmap</code>
136  * - Used to steer packets across l2 features enabled on the interface
137  * - <code>vnet_buffer (b0)->l2_classify.opaque_index</code>
138  * - Copied from the classifier session object upon classifier hit
139  *
140  * @em Counters:
141  * - <code>L2_INPUT_CLASSIFY_ERROR_MISS</code> Classifier misses
142  * - <code>L2_INPUT_CLASSIFY_ERROR_HIT</code> Classifier hits
143  * - <code>L2_INPUT_CLASSIFY_ERROR_CHAIN_HIT</code>
144  * Classifier hits in other than the first table
145  */
146 
150 {
151  u32 n_left_from, *from, *to_next;
154  vnet_classify_main_t *vcm = cm->vnet_classify_main;
156  (l2_input_classify_runtime_t *) node->runtime_data;
157  u32 hits = 0;
158  u32 misses = 0;
159  u32 chain_hits = 0;
160  f64 now;
161  u32 n_next_nodes;
162 
163  n_next_nodes = node->n_next_nodes;
164 
165  now = vlib_time_now (vm);
166 
167  n_left_from = frame->n_vectors;
169 
170  /* First pass: compute hash */
171 
172  while (n_left_from >= 4)
173  {
174  vlib_buffer_t *b0, *b1;
175  u32 bi0, bi1;
176  ethernet_header_t *h0, *h1;
177  u32 sw_if_index0, sw_if_index1;
178  u16 type0, type1;
179  int type_index0, type_index1;
180  vnet_classify_table_t *t0, *t1;
181  u32 table_index0, table_index1;
182  u64 hash0, hash1;
183 
184 
185  /* prefetch next iteration */
186  {
187  vlib_buffer_t *p2, *p3;
188 
189  p2 = vlib_get_buffer (vm, from[2]);
190  p3 = vlib_get_buffer (vm, from[3]);
191 
192  vlib_prefetch_buffer_header (p2, STORE);
194  vlib_prefetch_buffer_header (p3, STORE);
196  }
197 
198  bi0 = from[0];
199  b0 = vlib_get_buffer (vm, bi0);
200  h0 = vlib_buffer_get_current (b0);
201 
202  bi1 = from[1];
203  b1 = vlib_get_buffer (vm, bi1);
204  h1 = vlib_buffer_get_current (b1);
205 
206  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
207  vnet_buffer (b0)->l2_classify.table_index = ~0;
208 
209  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
210  vnet_buffer (b1)->l2_classify.table_index = ~0;
211 
212  /* Select classifier table based on ethertype */
213  type0 = clib_net_to_host_u16 (h0->type);
214  type1 = clib_net_to_host_u16 (h1->type);
215 
216  type_index0 = (type0 == ETHERNET_TYPE_IP4)
218  type_index0 = (type0 == ETHERNET_TYPE_IP6)
219  ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index0;
220 
221  type_index1 = (type1 == ETHERNET_TYPE_IP4)
223  type_index1 = (type1 == ETHERNET_TYPE_IP6)
224  ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index1;
225 
226  vnet_buffer (b0)->l2_classify.table_index =
227  table_index0 =
228  rt->l2cm->classify_table_index_by_sw_if_index
229  [type_index0][sw_if_index0];
230 
231  if (table_index0 != ~0)
232  {
233  t0 = pool_elt_at_index (vcm->tables, table_index0);
234 
235  vnet_buffer (b0)->l2_classify.hash = hash0 =
236  vnet_classify_hash_packet (t0, (u8 *) h0);
237  vnet_classify_prefetch_bucket (t0, hash0);
238  }
239 
240  vnet_buffer (b1)->l2_classify.table_index =
241  table_index1 =
242  rt->l2cm->classify_table_index_by_sw_if_index
243  [type_index1][sw_if_index1];
244 
245  if (table_index1 != ~0)
246  {
247  t1 = pool_elt_at_index (vcm->tables, table_index1);
248 
249  vnet_buffer (b1)->l2_classify.hash = hash1 =
250  vnet_classify_hash_packet (t1, (u8 *) h1);
251  vnet_classify_prefetch_bucket (t1, hash1);
252  }
253 
254  from += 2;
255  n_left_from -= 2;
256  }
257 
258  while (n_left_from > 0)
259  {
260  vlib_buffer_t *b0;
261  u32 bi0;
262  ethernet_header_t *h0;
263  u32 sw_if_index0;
264  u16 type0;
265  u32 type_index0;
267  u32 table_index0;
268  u64 hash0;
269 
270  bi0 = from[0];
271  b0 = vlib_get_buffer (vm, bi0);
272  h0 = vlib_buffer_get_current (b0);
273 
274  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
275  vnet_buffer (b0)->l2_classify.table_index = ~0;
276 
277  /* Select classifier table based on ethertype */
278  type0 = clib_net_to_host_u16 (h0->type);
279 
280  type_index0 = (type0 == ETHERNET_TYPE_IP4)
282  type_index0 = (type0 == ETHERNET_TYPE_IP6)
283  ? L2_INPUT_CLASSIFY_TABLE_IP6 : type_index0;
284 
285  vnet_buffer (b0)->l2_classify.table_index =
286  table_index0 = rt->l2cm->classify_table_index_by_sw_if_index
287  [type_index0][sw_if_index0];
288 
289  if (table_index0 != ~0)
290  {
291  t0 = pool_elt_at_index (vcm->tables, table_index0);
292 
293  vnet_buffer (b0)->l2_classify.hash = hash0 =
294  vnet_classify_hash_packet (t0, (u8 *) h0);
295  vnet_classify_prefetch_bucket (t0, hash0);
296  }
297  from++;
298  n_left_from--;
299  }
300 
301  next_index = node->cached_next_index;
303  n_left_from = frame->n_vectors;
304 
305  while (n_left_from > 0)
306  {
307  u32 n_left_to_next;
308 
309  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
310 
311  /* Not enough load/store slots to dual loop... */
312  while (n_left_from > 0 && n_left_to_next > 0)
313  {
314  u32 bi0;
315  vlib_buffer_t *b0;
316  u32 next0 = ~0; /* next l2 input feature, please... */
317  ethernet_header_t *h0;
318  u32 table_index0;
319  u64 hash0;
322 
323  if (PREDICT_TRUE (n_left_from > 2))
324  {
325  vlib_buffer_t *p2 = vlib_get_buffer (vm, from[2]);
326  u64 phash2;
327  u32 table_index2;
329 
330  /*
331  * Prefetch table entry two ahead. Buffer / data
332  * were prefetched above...
333  */
334  table_index2 = vnet_buffer (p2)->l2_classify.table_index;
335 
336  if (PREDICT_TRUE (table_index2 != ~0))
337  {
338  tp2 = pool_elt_at_index (vcm->tables, table_index2);
339  phash2 = vnet_buffer (p2)->l2_classify.hash;
340  vnet_classify_prefetch_entry (tp2, phash2);
341  }
342  }
343 
344  /* speculatively enqueue b0 to the current next frame */
345  bi0 = from[0];
346  to_next[0] = bi0;
347  from += 1;
348  to_next += 1;
349  n_left_from -= 1;
350  n_left_to_next -= 1;
351 
352  b0 = vlib_get_buffer (vm, bi0);
353  h0 = vlib_buffer_get_current (b0);
354  table_index0 = vnet_buffer (b0)->l2_classify.table_index;
355  e0 = 0;
356  vnet_buffer (b0)->l2_classify.opaque_index = ~0;
357 
358  if (PREDICT_TRUE (table_index0 != ~0))
359  {
360  hash0 = vnet_buffer (b0)->l2_classify.hash;
361  t0 = pool_elt_at_index (vcm->tables, table_index0);
362 
363  e0 = vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
364  if (e0)
365  {
366  vnet_buffer (b0)->l2_classify.opaque_index
367  = e0->opaque_index;
368  vlib_buffer_advance (b0, e0->advance);
369  next0 = (e0->next_index < n_next_nodes) ?
370  e0->next_index : next0;
371  hits++;
372  }
373  else
374  {
375  while (1)
376  {
377  if (t0->next_table_index != ~0)
378  t0 = pool_elt_at_index (vcm->tables,
379  t0->next_table_index);
380  else
381  {
382  next0 = (t0->miss_next_index < n_next_nodes) ?
383  t0->miss_next_index : next0;
384  misses++;
385  break;
386  }
387 
388  hash0 = vnet_classify_hash_packet (t0, (u8 *) h0);
389  e0 =
390  vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
391  if (e0)
392  {
393  vnet_buffer (b0)->l2_classify.opaque_index
394  = e0->opaque_index;
395  vlib_buffer_advance (b0, e0->advance);
396  next0 = (e0->next_index < n_next_nodes) ?
397  e0->next_index : next0;
398  hits++;
399  chain_hits++;
400  break;
401  }
402  }
403  }
404  }
405 
406  if (PREDICT_FALSE (next0 == 0))
407  b0->error = node->errors[L2_INPUT_CLASSIFY_ERROR_DROP];
408 
409  /* Determine the next node and remove ourself from bitmap */
410  if (PREDICT_TRUE (next0 == ~0))
411  next0 = vnet_l2_feature_next (b0, cm->l2_inp_feat_next,
412  L2INPUT_FEAT_INPUT_CLASSIFY);
413  else
414  vnet_buffer (b0)->l2.feature_bitmap &=
415  ~L2INPUT_FEAT_INPUT_CLASSIFY;
416 
417  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
418  && (b0->flags & VLIB_BUFFER_IS_TRACED)))
419  {
421  vlib_add_trace (vm, node, b0, sizeof (*t));
422  t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
423  t->table_index = table_index0;
424  t->next_index = next0;
425  t->session_offset = e0 ? vnet_classify_get_offset (t0, e0) : 0;
426  }
427 
428  /* verify speculative enqueue, maybe switch current next frame */
430  to_next, n_left_to_next,
431  bi0, next0);
432  }
433 
434  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
435  }
436 
437  vlib_node_increment_counter (vm, node->node_index,
438  L2_INPUT_CLASSIFY_ERROR_MISS, misses);
439  vlib_node_increment_counter (vm, node->node_index,
440  L2_INPUT_CLASSIFY_ERROR_HIT, hits);
441  vlib_node_increment_counter (vm, node->node_index,
442  L2_INPUT_CLASSIFY_ERROR_CHAIN_HIT, chain_hits);
443  return frame->n_vectors;
444 }
445 
446 /* *INDENT-OFF* */
448  .name = "l2-input-classify",
449  .vector_size = sizeof (u32),
450  .format_trace = format_l2_input_classify_trace,
452 
454  .error_strings = l2_input_classify_error_strings,
455 
456  .runtime_data_bytes = sizeof (l2_input_classify_runtime_t),
457 
458  .n_next_nodes = L2_INPUT_CLASSIFY_N_NEXT,
459 
460  /* edit / add dispositions here */
461  .next_nodes = {
462  [L2_INPUT_CLASSIFY_NEXT_DROP] = "error-drop",
463  [L2_INPUT_CLASSIFY_NEXT_ETHERNET_INPUT] = "ethernet-input-not-l2",
464  [L2_INPUT_CLASSIFY_NEXT_IP4_INPUT] = "ip4-input",
465  [L2_INPUT_CLASSIFY_NEXT_IP6_INPUT] = "ip6-input",
466  [L2_INPUT_CLASSIFY_NEXT_LI] = "li-hit",
467  },
468 };
469 /* *INDENT-ON* */
470 
471 #ifndef CLIB_MARCH_VARIANT
472 /** l2 input classsifier feature initialization. */
473 clib_error_t *
475 {
478 
480 
481  cm->vlib_main = vm;
482  cm->vnet_main = vnet_get_main ();
483  cm->vnet_classify_main = &vnet_classify_main;
484 
485  /* Initialize the feature next-node indexes */
490  cm->l2_inp_feat_next);
491  rt->l2cm = cm;
492  rt->vcm = cm->vnet_classify_main;
493 
494  return 0;
495 }
496 
498 
499 clib_error_t *
501 {
504 
506 
507  rt->l2cm = cm;
508  rt->vcm = cm->vnet_classify_main;
509 
510  return 0;
511 }
512 
514 
515 /** Enable/disable l2 input classification on a specific interface. */
516 void
518 {
519  l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_INPUT_CLASSIFY,
520  (u32) enable_disable);
521 }
522 
523 /** @brief Set l2 per-protocol, per-interface input classification tables.
524  *
525  * @param sw_if_index interface handle
526  * @param ip4_table_index ip4 classification table index, or ~0
527  * @param ip6_table_index ip6 classification table index, or ~0
528  * @param other_table_index non-ip4, non-ip6 classification table index,
529  * or ~0
530  * @returns 0 on success, VNET_API_ERROR_NO_SUCH_TABLE, TABLE2, TABLE3
531  * if the indicated (non-~0) table does not exist.
532  */
533 
534 int
536  u32 ip4_table_index,
537  u32 ip6_table_index, u32 other_table_index)
538 {
540  vnet_classify_main_t *vcm = cm->vnet_classify_main;
541 
542  /* Assume that we've validated sw_if_index in the API layer */
543 
544  if (ip4_table_index != ~0 &&
545  pool_is_free_index (vcm->tables, ip4_table_index))
546  return VNET_API_ERROR_NO_SUCH_TABLE;
547 
548  if (ip6_table_index != ~0 &&
549  pool_is_free_index (vcm->tables, ip6_table_index))
550  return VNET_API_ERROR_NO_SUCH_TABLE2;
551 
552  if (other_table_index != ~0 &&
553  pool_is_free_index (vcm->tables, other_table_index))
554  return VNET_API_ERROR_NO_SUCH_TABLE3;
555 
557  (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP4],
558  sw_if_index);
559 
561  (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP6],
562  sw_if_index);
563 
565  (cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_OTHER],
566  sw_if_index);
567 
568  cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP4]
569  [sw_if_index] = ip4_table_index;
570 
571  cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_IP6]
572  [sw_if_index] = ip6_table_index;
573 
574  cm->classify_table_index_by_sw_if_index[L2_INPUT_CLASSIFY_TABLE_OTHER]
575  [sw_if_index] = other_table_index;
576 
577  return 0;
578 }
579 #endif /* CLIB_MARCH_VARIANT */
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");
617  return 0;
618  }
619 
621  ip6_table_index, other_table_index);
622  switch (rv)
623  {
624  case 0:
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* */
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  */
L2_INPUT_CLASSIFY_NEXT_LI
@ L2_INPUT_CLASSIFY_NEXT_LI
Definition: l2_classify.h:42
int_l2_input_classify_command_fn
static clib_error_t * int_l2_input_classify_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: l2_input_classify.c:582
L2_INPUT_CLASSIFY_TABLE_IP6
@ L2_INPUT_CLASSIFY_TABLE_IP6
Definition: l2_classify.h:49
L2_INPUT_CLASSIFY_NEXT_IP6_INPUT
@ L2_INPUT_CLASSIFY_NEXT_IP6_INPUT
Definition: l2_classify.h:41
format_l2_input_classify_trace
static u8 * format_l2_input_classify_trace(u8 *s, va_list *args)
Packet trace format function.
Definition: l2_input_classify.c:58
vnet_classify_entry_t
struct _vnet_classify_entry vnet_classify_entry_t
vlib_node_get_runtime_data
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:137
vlib_prefetch_buffer_header
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:231
frame
vlib_main_t vlib_node_runtime_t vlib_frame_t * frame
Definition: nat44_ei.c:3048
l2_input_classify_runtime_t::vcm
vnet_classify_main_t * vcm
use-case independent main object pointer
Definition: l2_input_classify.c:51
l2_input_classify_error_t
l2_input_classify_error_t
Definition: l2_input_classify.c:83
vnet_classify_table_t::miss_next_index
u32 miss_next_index
Definition: vnet_classify.h:173
l2_input_classify_runtime_t
vlib node runtime.
Definition: l2_input_classify.c:48
l2_input_classify_trace_t
l2_input_classifier packet trace record.
Definition: l2_input_classify.c:33
next_index
nat44_ei_hairpin_src_next_t next_index
Definition: nat44_ei_hairpinning.c:412
l2_input_classify_main
l2_input_classify_main_t l2_input_classify_main
l2 input classifier main data structure.
Definition: l2_input_classify.c:74
l2_input_classify_worker_init
clib_error_t * l2_input_classify_worker_init(vlib_main_t *vm)
Definition: l2_input_classify.c:500
vlib_get_buffer
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:111
pool_elt_at_index
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:549
VLIB_NODE_TYPE_INTERNAL
@ VLIB_NODE_TYPE_INTERNAL
Definition: node.h:72
node
vlib_main_t vlib_node_runtime_t * node
Definition: nat44_ei.c:3047
vnet_classify_main
vnet_classify_main_t vnet_classify_main
Definition: vnet_classify.c:32
clib_error_return
#define clib_error_return(e, args...)
Definition: error.h:99
L2_INPUT_CLASSIFY_N_NEXT
@ L2_INPUT_CLASSIFY_N_NEXT
Definition: l2_classify.h:43
vlib_cli_command_t::path
char * path
Definition: cli.h:96
l2_input_classify_error_strings
static char * l2_input_classify_error_strings[]
Definition: l2_input_classify.c:91
u16
unsigned short u16
Definition: types.h:57
ethernet_header_t::type
u16 type
Definition: packet.h:59
vm
vlib_main_t * vm
X-connect all packets from the HOST to the PHY.
Definition: nat44_ei.c:3047
VLIB_RX
@ VLIB_RX
Definition: defs.h:46
l2_input_classify_trace_t::sw_if_index
u32 sw_if_index
interface handle for the ith packet
Definition: l2_input_classify.c:36
unformat_input_t
struct _unformat_input_t unformat_input_t
vlib_frame_t
Definition: node.h:372
l2_input_classify_trace_t::session_offset
u32 session_offset
offset in classifier heap of the corresponding session
Definition: l2_input_classify.c:42
vnet_classify_find_entry
vnet_classify_entry_t * vnet_classify_find_entry(vnet_classify_table_t *t, u8 *h, u64 hash, f64 now)
Definition: vnet_classify.c:656
unformat
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
pool_is_free_index
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:302
L2_INPUT_CLASSIFY_NEXT_IP4_INPUT
@ L2_INPUT_CLASSIFY_NEXT_IP4_INPUT
Definition: l2_classify.h:40
L2_INPUT_CLASSIFY_NEXT_ETHERNET_INPUT
@ L2_INPUT_CLASSIFY_NEXT_ETHERNET_INPUT
Definition: l2_classify.h:39
vlib_buffer_advance
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:276
vlib_buffer_t::error
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:145
VLIB_NODE_FN
#define VLIB_NODE_FN(node)
Definition: node.h:202
CLIB_UNUSED
#define CLIB_UNUSED(x)
Definition: clib.h:90
vnet_buffer
#define vnet_buffer(b)
Definition: buffer.h:441
l2_input_classify_next_t
l2_input_classify_next_t
Definition: l2_classify.h:36
vnet_get_main
vnet_main_t * vnet_get_main(void)
Definition: pnat_test_stubs.h:56
VLIB_NODE_FLAG_TRACE
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:291
PREDICT_FALSE
#define PREDICT_FALSE(x)
Definition: clib.h:124
L2_INPUT_CLASSIFY_NEXT_DROP
@ L2_INPUT_CLASSIFY_NEXT_DROP
Definition: l2_classify.h:38
ARRAY_LEN
#define ARRAY_LEN(x)
Definition: clib.h:70
vlib_frame_vector_args
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:301
unformat_check_input
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:163
int_l2_input_classify_cli
static vlib_cli_command_t int_l2_input_classify_cli
(constructor) VLIB_CLI_COMMAND (int_l2_input_classify_cli)
Definition: l2_input_classify.c:647
vnet_classify_prefetch_entry
static void vnet_classify_prefetch_entry(vnet_classify_table_t *t, u64 hash)
Definition: vnet_classify.h:368
if
if(node->flags &VLIB_NODE_FLAG_TRACE) vnet_interface_output_trace(vm
ethernet_header_t
Definition: packet.h:52
l2input_intf_bitmap_enable
u32 l2input_intf_bitmap_enable(u32 sw_if_index, l2input_feat_masks_t feature_bitmap, u32 enable)
Enable (or disable) the feature in the bitmap for the given interface.
Definition: l2_input.c:177
l2input_get_feat_names
char ** l2input_get_feat_names(void)
Return an array of strings containing graph node names of each feature.
Definition: l2_input.c:59
vnet_classify_prefetch_bucket
static void vnet_classify_prefetch_bucket(vnet_classify_table_t *t, u64 hash)
Definition: vnet_classify.h:320
vlib_node_increment_counter
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1244
VLIB_WORKER_INIT_FUNCTION
VLIB_WORKER_INIT_FUNCTION(l2_input_classify_worker_init)
f64
double f64
Definition: types.h:142
cm
vnet_feature_config_main_t * cm
Definition: nat44_ei_hairpinning.c:594
vec_validate
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment)
Definition: vec.h:523
VLIB_CLI_COMMAND
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:163
L2INPUT_N_FEAT
@ L2INPUT_N_FEAT
Definition: l2_input.h:165
L2_INPUT_CLASSIFY_TABLE_OTHER
@ L2_INPUT_CLASSIFY_TABLE_OTHER
Definition: l2_classify.h:50
vnet_classify_table_t
Definition: vnet_classify.h:147
L2_INPUT_CLASSIFY_TABLE_IP4
@ L2_INPUT_CLASSIFY_TABLE_IP4
Definition: l2_classify.h:48
vlib_node_registration_t
struct _vlib_node_registration vlib_node_registration_t
vlib_cli_output
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:716
vnet_l2_input_classify_set_tables
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.
Definition: l2_input_classify.c:535
vnet_l2_feature_next
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
foreach_l2_input_classify_error
#define foreach_l2_input_classify_error
Definition: l2_input_classify.c:77
vnet_classify_table_t::next_table_index
u32 next_table_index
Definition: vnet_classify.h:167
vnet_main_t
Definition: vnet.h:76
vlib_validate_buffer_enqueue_x1
#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:224
u64
unsigned long u64
Definition: types.h:89
unformat_vnet_sw_interface
unformat_function_t unformat_vnet_sw_interface
Definition: interface_funcs.h:462
format
description fragment has unexpected format
Definition: map.api:433
vnet_l2_input_classify_enable_disable
void vnet_l2_input_classify_enable_disable(u32 sw_if_index, int enable_disable)
Enable/disable l2 input classification on a specific interface.
Definition: l2_input_classify.c:517
vlib_put_next_frame
vlib_put_next_frame(vm, node, next_index, 0)
l2_input_classify_trace_t::table_index
u32 table_index
classifier table which provided the final result
Definition: l2_input_classify.c:40
u32
unsigned int u32
Definition: types.h:88
VLIB_INIT_FUNCTION
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:172
l2_input_classify_init
clib_error_t * l2_input_classify_init(vlib_main_t *vm)
l2 input classsifier feature initialization.
Definition: l2_input_classify.c:474
l2_input_classify_node
vlib_node_registration_t l2_input_classify_node
(constructor) VLIB_REGISTER_NODE (l2_input_classify_node)
Definition: l2_input_classify.c:447
l2_classify.h
vnet_classify_main_t
struct _vnet_classify_main vnet_classify_main_t
Definition: vnet_classify.h:61
vnet_classify_hash_packet
u64 vnet_classify_hash_packet(vnet_classify_table_t *t, u8 *h)
vnet_classify_get_offset
static uword vnet_classify_get_offset(vnet_classify_table_t *t, vnet_classify_entry_t *v)
Definition: vnet_classify.h:341
now
f64 now
Definition: nat44_ei_out2in.c:710
l2_input_classify_main_t
struct _l2_classify_main l2_input_classify_main_t
vlib_main_t
Definition: main.h:102
vlib_node_t
Definition: node.h:247
vlib_add_trace
void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace.c:628
u8
unsigned char u8
Definition: types.h:56
clib_error_t
Definition: clib_error.h:21
vlib_buffer_get_current
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:257
rt
vnet_interface_output_runtime_t * rt
Definition: interface_output.c:419
vlib_init_function_t
clib_error_t *() vlib_init_function_t(struct vlib_main_t *vm)
Definition: init.h:51
vlib_buffer_t::data
u8 data[]
Packet data.
Definition: buffer.h:204
l2_input_classify_trace_t::next_index
u32 next_index
graph arc index selected for this packet
Definition: l2_input_classify.c:38
rv
int __clib_unused rv
Definition: application.c:491
vlib_time_now
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:327
clib_prefetch_store
static_always_inline void clib_prefetch_store(void *p)
Definition: cache.h:98
api_errno.h
vlib_node_runtime_t
Definition: node.h:454
vlib_cli_command_t
Definition: cli.h:92
from
from
Definition: nat44_ei_hairpinning.c:415
PREDICT_TRUE
#define PREDICT_TRUE(x)
Definition: clib.h:125
sw_if_index
vl_api_interface_index_t sw_if_index
Definition: wireguard.api:34
vlib_get_next_frame
#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:395
l2_input_classify_runtime_t::l2cm
l2_input_classify_main_t * l2cm
l2 input classifier main object pointer
Definition: l2_input_classify.c:53
L2_INPUT_CLASSIFY_N_ERROR
@ L2_INPUT_CLASSIFY_N_ERROR
Definition: l2_input_classify.c:88
n_left_from
n_left_from
Definition: nat44_ei_hairpinning.c:416
feat_bitmap_init_next_nodes
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
type
vl_api_fib_path_type_t type
Definition: fib_types.api:123
UNFORMAT_END_OF_INPUT
#define UNFORMAT_END_OF_INPUT
Definition: format.h:137
vlib_buffer_t::flags
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index,...
Definition: buffer.h:133
vlib_buffer_t
VLIB buffer representation.
Definition: buffer.h:111
VLIB_REGISTER_NODE
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169