FD.io VPP  v18.01.2-1-g9b554f3
Vector Packet Processing
l2_fwd.c
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1 /*
2  * l2_fwd.c : layer 2 forwarding using l2fib
3  *
4  * Copyright (c) 2013 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <vlib/vlib.h>
19 #include <vnet/vnet.h>
20 #include <vnet/pg/pg.h>
21 #include <vnet/ethernet/ethernet.h>
22 #include <vlib/cli.h>
23 
24 #include <vnet/l2/l2_input.h>
25 #include <vnet/l2/l2_bvi.h>
26 #include <vnet/l2/l2_fwd.h>
27 #include <vnet/l2/l2_fib.h>
28 
29 #include <vppinfra/error.h>
30 #include <vppinfra/hash.h>
31 #include <vppinfra/sparse_vec.h>
32 
33 
34 /**
35  * @file
36  * @brief Ethernet Forwarding.
37  *
38  * Code in this file handles forwarding Layer 2 packets. This file calls
39  * the FIB lookup, packet learning and the packet flooding as necessary.
40  * Packet is then sent to the next graph node.
41  */
42 
43 typedef struct
44 {
45 
46  /* Hash table */
47  BVT (clib_bihash) * mac_table;
48 
49  /* next node index for the L3 input node of each ethertype */
50  next_by_ethertype_t l3_next;
51 
52  /* convenience variables */
55 } l2fwd_main_t;
56 
57 typedef struct
58 {
59  /* per-pkt trace data */
60  u8 src[6];
61  u8 dst[6];
65 
66 /* packet trace format function */
67 static u8 *
68 format_l2fwd_trace (u8 * s, va_list * args)
69 {
70  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
71  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
72  l2fwd_trace_t *t = va_arg (*args, l2fwd_trace_t *);
73 
74  s = format (s, "l2-fwd: sw_if_index %d dst %U src %U bd_index %d",
75  t->sw_if_index,
78  return s;
79 }
80 
82 
84 
85 #define foreach_l2fwd_error \
86 _(L2FWD, "L2 forward packets") \
87 _(FLOOD, "L2 forward misses") \
88 _(HIT, "L2 forward hits") \
89 _(BVI_BAD_MAC, "BVI L3 MAC mismatch") \
90 _(BVI_ETHERTYPE, "BVI packet with unhandled ethertype") \
91 _(FILTER_DROP, "Filter Mac Drop") \
92 _(REFLECT_DROP, "Reflection Drop") \
93 _(STALE_DROP, "Stale entry Drop")
94 
95 typedef enum
96 {
97 #define _(sym,str) L2FWD_ERROR_##sym,
99 #undef _
101 } l2fwd_error_t;
102 
103 static char *l2fwd_error_strings[] = {
104 #define _(sym,string) string,
106 #undef _
107 };
108 
109 typedef enum
110 {
115 } l2fwd_next_t;
116 
117 /** Forward one packet based on the mac table lookup result. */
118 
121  vlib_node_runtime_t * node,
122  l2fwd_main_t * msm,
123  vlib_error_main_t * em,
124  vlib_buffer_t * b0,
125  u32 sw_if_index0, l2fib_entry_result_t * result0, u32 * next0)
126 {
127  int try_flood = result0->raw == ~0;
128  int flood_error;
129 
130  if (PREDICT_FALSE (try_flood))
131  {
132  flood_error = L2FWD_ERROR_FLOOD;
133  }
134  else
135  {
136  /* lookup hit, forward packet */
137 #ifdef COUNTERS
138  em->counters[node_counter_base_index + L2FWD_ERROR_HIT] += 1;
139 #endif
140 
141  vnet_buffer (b0)->sw_if_index[VLIB_TX] = result0->fields.sw_if_index;
142  *next0 = L2FWD_NEXT_L2_OUTPUT;
143  int l2fib_seq_num_valid = 1;
144 
145  /* check l2fib seq num for stale entries */
146  if (!result0->fields.age_not)
147  {
148  l2fib_seq_num_t in_sn = {.as_u16 = vnet_buffer (b0)->l2.l2fib_sn };
149  l2fib_seq_num_t expected_sn = {
150  .bd = in_sn.bd,
151  .swif = *l2fib_swif_seq_num (result0->fields.sw_if_index),
152  };
153  l2fib_seq_num_valid =
154  expected_sn.as_u16 == result0->fields.sn.as_u16;
155  }
156 
157  if (PREDICT_FALSE (!l2fib_seq_num_valid))
158  {
159  flood_error = L2FWD_ERROR_STALE_DROP;
160  try_flood = 1;
161  }
162  /* perform reflection check */
163  else if (PREDICT_FALSE (sw_if_index0 == result0->fields.sw_if_index))
164  {
165  b0->error = node->errors[L2FWD_ERROR_REFLECT_DROP];
166  *next0 = L2FWD_NEXT_DROP;
167  }
168  /* perform filter check */
169  else if (PREDICT_FALSE (result0->fields.filter))
170  {
171  b0->error = node->errors[L2FWD_ERROR_FILTER_DROP];
172  *next0 = L2FWD_NEXT_DROP;
173  }
174  /* perform BVI check */
175  else if (PREDICT_FALSE (result0->fields.bvi))
176  {
177  u32 rc;
178  rc = l2_to_bvi (vm,
179  msm->vnet_main,
180  b0,
181  vnet_buffer (b0)->sw_if_index[VLIB_TX],
182  &msm->l3_next, next0);
183 
184  if (PREDICT_FALSE (rc))
185  {
186  if (rc == TO_BVI_ERR_BAD_MAC)
187  {
188  b0->error = node->errors[L2FWD_ERROR_BVI_BAD_MAC];
189  *next0 = L2FWD_NEXT_DROP;
190  }
191  else if (rc == TO_BVI_ERR_ETHERTYPE)
192  {
193  b0->error = node->errors[L2FWD_ERROR_BVI_ETHERTYPE];
194  *next0 = L2FWD_NEXT_DROP;
195  }
196  }
197  }
198  }
199 
200  /* flood */
201  if (PREDICT_FALSE (try_flood))
202  {
203  /*
204  * lookup miss, so flood
205  * TODO:replicate packet to each intf in bridge-domain
206  * For now just drop
207  */
208  if (vnet_buffer (b0)->l2.feature_bitmap & L2INPUT_FEAT_UU_FLOOD)
209  {
210  *next0 = L2FWD_NEXT_FLOOD;
211  }
212  else
213  {
214  /* Flooding is disabled */
215  b0->error = node->errors[flood_error];
216  *next0 = L2FWD_NEXT_DROP;
217  }
218  }
219 
220 }
221 
222 
225  vlib_frame_t * frame, int do_trace)
226 {
227  u32 n_left_from, *from, *to_next;
228  l2fwd_next_t next_index;
229  l2fwd_main_t *msm = &l2fwd_main;
230  vlib_node_t *n = vlib_get_node (vm, l2fwd_node.index);
231  CLIB_UNUSED (u32 node_counter_base_index) = n->error_heap_index;
232  vlib_error_main_t *em = &vm->error_main;
233  l2fib_entry_key_t cached_key;
234  l2fib_entry_result_t cached_result;
235 
236  /* Clear the one-entry cache in case mac table was updated */
237  cached_key.raw = ~0;
238  cached_result.raw = ~0;
239 
240  from = vlib_frame_vector_args (frame);
241  n_left_from = frame->n_vectors; /* number of packets to process */
242  next_index = node->cached_next_index;
243 
244  while (n_left_from > 0)
245  {
246  u32 n_left_to_next;
247 
248  /* get space to enqueue frame to graph node "next_index" */
249  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
250 
251  while (n_left_from >= 8 && n_left_to_next >= 4)
252  {
253  u32 bi0, bi1, bi2, bi3;
254  vlib_buffer_t *b0, *b1, *b2, *b3;
255  u32 next0, next1, next2, next3;
256  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
257  ethernet_header_t *h0, *h1, *h2, *h3;
258  l2fib_entry_key_t key0, key1, key2, key3;
259  l2fib_entry_result_t result0, result1, result2, result3;
260  u32 bucket0, bucket1, bucket2, bucket3;
261 
262  /* Prefetch next iteration. */
263  {
264  vlib_buffer_t *p4, *p5, *p6, *p7;
265 
266  p4 = vlib_get_buffer (vm, from[4]);
267  p5 = vlib_get_buffer (vm, from[5]);
268  p6 = vlib_get_buffer (vm, from[6]);
269  p7 = vlib_get_buffer (vm, from[7]);
270 
271  vlib_prefetch_buffer_header (p4, LOAD);
272  vlib_prefetch_buffer_header (p5, LOAD);
273  vlib_prefetch_buffer_header (p6, LOAD);
274  vlib_prefetch_buffer_header (p7, LOAD);
275 
280  }
281 
282  /* speculatively enqueue b0 and b1 to the current next frame */
283  /* bi is "buffer index", b is pointer to the buffer */
284  to_next[0] = bi0 = from[0];
285  to_next[1] = bi1 = from[1];
286  to_next[2] = bi2 = from[2];
287  to_next[3] = bi3 = from[3];
288  from += 4;
289  to_next += 4;
290  n_left_from -= 4;
291  n_left_to_next -= 4;
292 
293  b0 = vlib_get_buffer (vm, bi0);
294  b1 = vlib_get_buffer (vm, bi1);
295  b2 = vlib_get_buffer (vm, bi2);
296  b3 = vlib_get_buffer (vm, bi3);
297 
298  /* RX interface handles */
299  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
300  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
301  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX];
302  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX];
303 
304  h0 = vlib_buffer_get_current (b0);
305  h1 = vlib_buffer_get_current (b1);
306  h2 = vlib_buffer_get_current (b2);
307  h3 = vlib_buffer_get_current (b3);
308 
309  if (do_trace)
310  {
311  if (b0->flags & VLIB_BUFFER_IS_TRACED)
312  {
313  l2fwd_trace_t *t =
314  vlib_add_trace (vm, node, b0, sizeof (*t));
315  t->sw_if_index = sw_if_index0;
316  t->bd_index = vnet_buffer (b0)->l2.bd_index;
317  clib_memcpy (t->src, h0->src_address, 6);
318  clib_memcpy (t->dst, h0->dst_address, 6);
319  }
320  if (b1->flags & VLIB_BUFFER_IS_TRACED)
321  {
322  l2fwd_trace_t *t =
323  vlib_add_trace (vm, node, b1, sizeof (*t));
324  t->sw_if_index = sw_if_index1;
325  t->bd_index = vnet_buffer (b1)->l2.bd_index;
326  clib_memcpy (t->src, h1->src_address, 6);
327  clib_memcpy (t->dst, h1->dst_address, 6);
328  }
329  if (b2->flags & VLIB_BUFFER_IS_TRACED)
330  {
331  l2fwd_trace_t *t =
332  vlib_add_trace (vm, node, b2, sizeof (*t));
333  t->sw_if_index = sw_if_index2;
334  t->bd_index = vnet_buffer (b2)->l2.bd_index;
335  clib_memcpy (t->src, h2->src_address, 6);
336  clib_memcpy (t->dst, h2->dst_address, 6);
337  }
338  if (b3->flags & VLIB_BUFFER_IS_TRACED)
339  {
340  l2fwd_trace_t *t =
341  vlib_add_trace (vm, node, b3, sizeof (*t));
342  t->sw_if_index = sw_if_index3;
343  t->bd_index = vnet_buffer (b3)->l2.bd_index;
344  clib_memcpy (t->src, h3->src_address, 6);
345  clib_memcpy (t->dst, h3->dst_address, 6);
346  }
347  }
348 
349  /* process 2 pkts */
350 #ifdef COUNTERS
351  em->counters[node_counter_base_index + L2FWD_ERROR_L2FWD] += 4;
352 #endif
353  /* *INDENT-OFF* */
354  l2fib_lookup_4 (msm->mac_table, &cached_key, &cached_result,
355  h0->dst_address, h1->dst_address,
356  h2->dst_address, h3->dst_address,
357  vnet_buffer (b0)->l2.bd_index,
358  vnet_buffer (b1)->l2.bd_index,
359  vnet_buffer (b2)->l2.bd_index,
360  vnet_buffer (b3)->l2.bd_index,
361  &key0, /* not used */
362  &key1, /* not used */
363  &key2, /* not used */
364  &key3, /* not used */
365  &bucket0, /* not used */
366  &bucket1, /* not used */
367  &bucket2, /* not used */
368  &bucket3, /* not used */
369  &result0,
370  &result1,
371  &result2,
372  &result3);
373  /* *INDENT-ON* */
374  l2fwd_process (vm, node, msm, em, b0, sw_if_index0, &result0,
375  &next0);
376  l2fwd_process (vm, node, msm, em, b1, sw_if_index1, &result1,
377  &next1);
378  l2fwd_process (vm, node, msm, em, b2, sw_if_index2, &result2,
379  &next2);
380  l2fwd_process (vm, node, msm, em, b3, sw_if_index3, &result3,
381  &next3);
382 
383  /* verify speculative enqueues, maybe switch current next frame */
384  /* if next0==next1==next_index then nothing special needs to be done */
385  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
386  to_next, n_left_to_next,
387  bi0, bi1, bi2, bi3,
388  next0, next1, next2, next3);
389  }
390 
391  while (n_left_from > 0 && n_left_to_next > 0)
392  {
393  u32 bi0;
394  vlib_buffer_t *b0;
395  u32 next0;
396  u32 sw_if_index0;
397  ethernet_header_t *h0;
398  l2fib_entry_key_t key0;
399  l2fib_entry_result_t result0;
400  u32 bucket0;
401 
402  /* speculatively enqueue b0 to the current next frame */
403  bi0 = from[0];
404  to_next[0] = bi0;
405  from += 1;
406  to_next += 1;
407  n_left_from -= 1;
408  n_left_to_next -= 1;
409 
410  b0 = vlib_get_buffer (vm, bi0);
411 
412  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
413 
414  h0 = vlib_buffer_get_current (b0);
415 
416  if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
417  {
418  l2fwd_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
419  t->sw_if_index = sw_if_index0;
420  t->bd_index = vnet_buffer (b0)->l2.bd_index;
421  clib_memcpy (t->src, h0->src_address, 6);
422  clib_memcpy (t->dst, h0->dst_address, 6);
423  }
424 
425  /* process 1 pkt */
426 #ifdef COUNTERS
427  em->counters[node_counter_base_index + L2FWD_ERROR_L2FWD] += 1;
428 #endif
429  l2fib_lookup_1 (msm->mac_table, &cached_key, &cached_result, h0->dst_address, vnet_buffer (b0)->l2.bd_index, &key0, /* not used */
430  &bucket0, /* not used */
431  &result0);
432  l2fwd_process (vm, node, msm, em, b0, sw_if_index0, &result0,
433  &next0);
434 
435  /* verify speculative enqueue, maybe switch current next frame */
436  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
437  to_next, n_left_to_next,
438  bi0, next0);
439  }
440 
441  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
442  }
443 
444  return frame->n_vectors;
445 }
446 
447 static uword
449  vlib_node_runtime_t * node, vlib_frame_t * frame)
450 {
451  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
452  return l2fwd_node_inline (vm, node, frame, 1 /* do_trace */ );
453  return l2fwd_node_inline (vm, node, frame, 0 /* do_trace */ );
454 }
455 
456 /* *INDENT-OFF* */
457 VLIB_REGISTER_NODE (l2fwd_node,static) = {
458  .function = l2fwd_node_fn,
459  .name = "l2-fwd",
460  .vector_size = sizeof (u32),
461  .format_trace = format_l2fwd_trace,
462  .type = VLIB_NODE_TYPE_INTERNAL,
463 
464  .n_errors = ARRAY_LEN(l2fwd_error_strings),
465  .error_strings = l2fwd_error_strings,
466 
467  .n_next_nodes = L2FWD_N_NEXT,
468 
469  /* edit / add dispositions here */
470  .next_nodes = {
471  [L2FWD_NEXT_L2_OUTPUT] = "l2-output",
472  [L2FWD_NEXT_FLOOD] = "l2-flood",
473  [L2FWD_NEXT_DROP] = "error-drop",
474  },
475 };
476 /* *INDENT-ON* */
477 
480 {
481  l2fwd_main_t *mp = &l2fwd_main;
482 
483  mp->vlib_main = vm;
484  mp->vnet_main = vnet_get_main ();
485 
486  /* init the hash table ptr */
487  mp->mac_table = get_mac_table ();
488 
489  /* Initialize the next nodes for each ethertype */
490  next_by_ethertype_init (&mp->l3_next);
491 
492  return 0;
493 }
494 
496 
497 
498 /** Add the L3 input node for this ethertype to the next nodes structure. */
499 void
501  ethernet_type_t type, u32 node_index)
502 {
503  l2fwd_main_t *mp = &l2fwd_main;
504  u32 next_index;
505 
506  next_index = vlib_node_add_next (vm, l2fwd_node.index, node_index);
507 
508  next_by_ethertype_register (&mp->l3_next, type, next_index);
509 }
510 
511 
512 /**
513  * Set subinterface forward enable/disable.
514  * The CLI format is:
515  * set interface l2 forward <interface> [disable]
516  */
517 static clib_error_t *
519 {
520  vnet_main_t *vnm = vnet_get_main ();
521  clib_error_t *error = 0;
522  u32 sw_if_index;
523  u32 enable;
524 
525  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
526  {
527  error = clib_error_return (0, "unknown interface `%U'",
528  format_unformat_error, input);
529  goto done;
530  }
531 
532  enable = 1;
533  if (unformat (input, "disable"))
534  {
535  enable = 0;
536  }
537 
538  /* set the interface flag */
539  if (l2input_intf_config (sw_if_index)->xconnect)
540  {
541  l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_XCONNECT, enable);
542  }
543  else
544  {
545  l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_FWD, enable);
546  }
547 
548 done:
549  return error;
550 }
551 
552 /*?
553  * Layer 2 unicast forwarding can be enabled and disabled on each
554  * interface and on each bridge-domain. Use this command to
555  * manage interfaces. It is enabled by default.
556  *
557  * @cliexpar
558  * Example of how to enable fowarding:
559  * @cliexcmd{set interface l2 forward GigabitEthernet0/8/0}
560  * Example of how to disable fowarding:
561  * @cliexcmd{set interface l2 forward GigabitEthernet0/8/0 disable}
562 ?*/
563 /* *INDENT-OFF* */
564 VLIB_CLI_COMMAND (int_fwd_cli, static) = {
565  .path = "set interface l2 forward",
566  .short_help = "set interface l2 forward <interface> [disable]",
567  .function = int_fwd,
568 };
569 /* *INDENT-ON* */
570 
571 /*
572  * fd.io coding-style-patch-verification: ON
573  *
574  * Local Variables:
575  * eval: (c-set-style "gnu")
576  * End:
577  */
u32 error_heap_index
Definition: node.h:278
#define CLIB_UNUSED(x)
Definition: clib.h:79
u16 bd_index
Definition: l2_fwd.c:63
#define TO_BVI_ERR_BAD_MAC
Definition: l2_bvi.h:28
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
l2_input_config_t * l2input_intf_config(u32 sw_if_index)
Get a pointer to the config for the given interface.
Definition: l2_input.c:524
ethernet_type_t
Definition: packet.h:43
#define TO_BVI_ERR_ETHERTYPE
Definition: l2_bvi.h:29
static_always_inline u32 l2_to_bvi(vlib_main_t *vlib_main, vnet_main_t *vnet_main, vlib_buffer_t *b0, u32 bvi_sw_if_index, next_by_ethertype_t *l3_next, u32 *next0)
Send a packet from L2 processing to L3 via the BVI interface.
Definition: l2_bvi.h:38
u8 src_address[6]
Definition: packet.h:54
static uword l2fwd_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: l2_fwd.c:448
clib_error_t * l2fwd_init(vlib_main_t *vm)
Definition: l2_fwd.c:479
#define vlib_validate_buffer_enqueue_x4(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, bi2, bi3, next0, next1, next2, next3)
Finish enqueueing four buffers forward in the graph.
Definition: buffer_node.h:138
struct _vlib_node_registration vlib_node_registration_t
static_always_inline u8 * l2fib_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:413
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
unformat_function_t unformat_vnet_sw_interface
Definition: l2_fib.h:108
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:415
static vlib_node_registration_t l2fwd_node
(constructor) VLIB_REGISTER_NODE (l2fwd_node)
Definition: l2_fwd.c:83
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1108
#define static_always_inline
Definition: clib.h:93
u8 * format_ethernet_address(u8 *s, va_list *args)
Definition: format.c:44
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
u8 dst_address[6]
Definition: packet.h:53
static BVT(clib_bihash)
Definition: adj_nbr.c:26
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:171
#define clib_error_return(e, args...)
Definition: error.h:99
static_always_inline void l2fwd_process(vlib_main_t *vm, vlib_node_runtime_t *node, l2fwd_main_t *msm, vlib_error_main_t *em, vlib_buffer_t *b0, u32 sw_if_index0, l2fib_entry_result_t *result0, u32 *next0)
Forward one packet based on the mac table lookup result.
Definition: l2_fwd.c:120
static clib_error_t * int_fwd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Set subinterface forward enable/disable.
Definition: l2_fwd.c:518
vlib_error_main_t error_main
Definition: main.h:138
struct _unformat_input_t unformat_input_t
void l2fwd_register_input_type(vlib_main_t *vm, ethernet_type_t type, u32 node_index)
Add the L3 input node for this ethertype to the next nodes structure.
Definition: l2_fwd.c:500
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:195
static char * l2fwd_error_strings[]
Definition: l2_fwd.c:103
static u8 * format_l2fwd_trace(u8 *s, va_list *args)
Definition: l2_fwd.c:68
#define PREDICT_FALSE(x)
Definition: clib.h:105
vnet_main_t vnet_main
Definition: misc.c:43
#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
l2fwd_main_t l2fwd_main
Definition: l2_fwd.c:81
u64 raw
Definition: l2_fib.h:126
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:113
static_always_inline uword l2fwd_node_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int do_trace)
Definition: l2_fwd.c:224
u64 * counters
Definition: error.h:78
clib_error_t * next_by_ethertype_register(next_by_ethertype_t *l3_next, u32 ethertype, u32 next_index)
Definition: node.c:1280
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
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:93
#define clib_memcpy(a, b, c)
Definition: string.h:75
#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
l2fwd_error_t
Definition: l2_fwd.c:95
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
u32 sw_if_index
Definition: l2_fwd.c:62
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:456
struct l2fib_entry_result_t::@214::@216 fields
unsigned int u32
Definition: types.h:88
Definition: l2_fib.h:71
#define foreach_l2fwd_error
Definition: l2_fwd.c:85
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:259
u8 src[6]
Definition: l2_fwd.c:60
l2fwd_next_t
Definition: l2_fwd.c:109
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
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:534
int vlib_main(vlib_main_t *volatile vm, unformat_input_t *input)
Definition: main.c:1676
Definition: defs.h:47
unsigned short u16
Definition: types.h:57
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
clib_error_t * next_by_ethertype_init(next_by_ethertype_t *l3_next)
Definition: node.c:1250
u8 dst[6]
Definition: l2_fwd.c:61
#define vnet_buffer(b)
Definition: buffer.h:326
#define VLIB_NODE_FUNCTION_MULTIARCH(node, fn)
Definition: node.h:158
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
u8 data[0]
Packet data.
Definition: buffer.h:159
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
Definition: node_funcs.h:59
static_always_inline void l2fib_lookup_4(BVT(clib_bihash)*mac_table, l2fib_entry_key_t *cached_key, l2fib_entry_result_t *cached_result, u8 *mac0, u8 *mac1, u8 *mac2, u8 *mac3, u16 bd_index0, u16 bd_index1, u16 bd_index2, u16 bd_index3, l2fib_entry_key_t *key0, l2fib_entry_key_t *key1, l2fib_entry_key_t *key2, l2fib_entry_key_t *key3, u32 *bucket0, u32 *bucket1, u32 *bucket2, u32 *bucket3, l2fib_entry_result_t *result0, l2fib_entry_result_t *result1, l2fib_entry_result_t *result2, l2fib_entry_result_t *result3)
Definition: l2_fib.h:299
u16 flags
Copy of main node flags.
Definition: node.h:450
static_always_inline void l2fib_lookup_1(BVT(clib_bihash)*mac_table, l2fib_entry_key_t *cached_key, l2fib_entry_result_t *cached_result, u8 *mac0, u16 bd_index0, l2fib_entry_key_t *key0, u32 *bucket0, l2fib_entry_result_t *result0)
Lookup the entry for mac and bd_index in the mac table for 1 packet.
Definition: l2_fib.h:200
#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
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
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
Definition: defs.h:46
u64 raw
Definition: l2_fib.h:85