FD.io VPP  v17.04-9-g99c0734
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 
94 typedef enum
95 {
96 #define _(sym,str) L2FWD_ERROR_##sym,
98 #undef _
100 } l2fwd_error_t;
101 
102 static char *l2fwd_error_strings[] = {
103 #define _(sym,string) string,
105 #undef _
106 };
107 
108 typedef enum
109 {
114 } l2fwd_next_t;
115 
116 /** Forward one packet based on the mac table lookup result. */
117 
120  vlib_node_runtime_t * node,
121  l2fwd_main_t * msm,
122  vlib_error_main_t * em,
123  vlib_buffer_t * b0,
124  u32 sw_if_index0, l2fib_entry_result_t * result0, u32 * next0)
125 {
126  if (PREDICT_FALSE (result0->raw == ~0))
127  {
128  /*
129  * lookup miss, so flood
130  * TODO:replicate packet to each intf in bridge-domain
131  * For now just drop
132  */
133  if (vnet_buffer (b0)->l2.feature_bitmap & L2INPUT_FEAT_UU_FLOOD)
134  {
135  *next0 = L2FWD_NEXT_FLOOD;
136  }
137  else
138  {
139  /* Flooding is disabled */
140  b0->error = node->errors[L2FWD_ERROR_FLOOD];
141  *next0 = L2FWD_NEXT_DROP;
142  }
143 
144  }
145  else
146  {
147 
148  /* lookup hit, forward packet */
149 #ifdef COUNTERS
150  em->counters[node_counter_base_index + L2FWD_ERROR_HIT] += 1;
151 #endif
152 
153  vnet_buffer (b0)->sw_if_index[VLIB_TX] = result0->fields.sw_if_index;
154  *next0 = L2FWD_NEXT_L2_OUTPUT;
155 
156  /* perform reflection check */
157  if (PREDICT_FALSE (sw_if_index0 == result0->fields.sw_if_index))
158  {
159  b0->error = node->errors[L2FWD_ERROR_REFLECT_DROP];
160  *next0 = L2FWD_NEXT_DROP;
161 
162  /* perform filter check */
163  }
164  else if (PREDICT_FALSE (result0->fields.filter))
165  {
166  b0->error = node->errors[L2FWD_ERROR_FILTER_DROP];
167  *next0 = L2FWD_NEXT_DROP;
168 
169  /* perform BVI check */
170  }
171  else if (PREDICT_FALSE (result0->fields.bvi))
172  {
173  u32 rc;
174  rc = l2_to_bvi (vm,
175  msm->vnet_main,
176  b0,
177  vnet_buffer (b0)->sw_if_index[VLIB_TX],
178  &msm->l3_next, next0);
179 
180  if (PREDICT_FALSE (rc))
181  {
182  if (rc == TO_BVI_ERR_BAD_MAC)
183  {
184  b0->error = node->errors[L2FWD_ERROR_BVI_BAD_MAC];
185  *next0 = L2FWD_NEXT_DROP;
186  }
187  else if (rc == TO_BVI_ERR_ETHERTYPE)
188  {
189  b0->error = node->errors[L2FWD_ERROR_BVI_ETHERTYPE];
190  *next0 = L2FWD_NEXT_DROP;
191  }
192  }
193  }
194  }
195 }
196 
197 
200  vlib_frame_t * frame, int do_trace)
201 {
202  u32 n_left_from, *from, *to_next;
203  l2fwd_next_t next_index;
204  l2fwd_main_t *msm = &l2fwd_main;
205  vlib_node_t *n = vlib_get_node (vm, l2fwd_node.index);
206  CLIB_UNUSED (u32 node_counter_base_index) = n->error_heap_index;
207  vlib_error_main_t *em = &vm->error_main;
208  l2fib_entry_key_t cached_key;
209  l2fib_entry_result_t cached_result;
210 
211  /* Clear the one-entry cache in case mac table was updated */
212  cached_key.raw = ~0;
213  cached_result.raw = ~0;
214 
215  from = vlib_frame_vector_args (frame);
216  n_left_from = frame->n_vectors; /* number of packets to process */
217  next_index = node->cached_next_index;
218 
219  while (n_left_from > 0)
220  {
221  u32 n_left_to_next;
222 
223  /* get space to enqueue frame to graph node "next_index" */
224  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
225 
226  while (n_left_from >= 8 && n_left_to_next >= 4)
227  {
228  u32 bi0, bi1, bi2, bi3;
229  vlib_buffer_t *b0, *b1, *b2, *b3;
230  u32 next0, next1, next2, next3;
231  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
232  ethernet_header_t *h0, *h1, *h2, *h3;
233  l2fib_entry_key_t key0, key1, key2, key3;
234  l2fib_entry_result_t result0, result1, result2, result3;
235  u32 bucket0, bucket1, bucket2, bucket3;
236 
237  /* Prefetch next iteration. */
238  {
239  vlib_buffer_t *p4, *p5, *p6, *p7;
240 
241  p4 = vlib_get_buffer (vm, from[4]);
242  p5 = vlib_get_buffer (vm, from[5]);
243  p6 = vlib_get_buffer (vm, from[6]);
244  p7 = vlib_get_buffer (vm, from[7]);
245 
246  vlib_prefetch_buffer_header (p4, LOAD);
247  vlib_prefetch_buffer_header (p5, LOAD);
248  vlib_prefetch_buffer_header (p6, LOAD);
249  vlib_prefetch_buffer_header (p7, LOAD);
250 
255  }
256 
257  /* speculatively enqueue b0 and b1 to the current next frame */
258  /* bi is "buffer index", b is pointer to the buffer */
259  to_next[0] = bi0 = from[0];
260  to_next[1] = bi1 = from[1];
261  to_next[2] = bi2 = from[2];
262  to_next[3] = bi3 = from[3];
263  from += 4;
264  to_next += 4;
265  n_left_from -= 4;
266  n_left_to_next -= 4;
267 
268  b0 = vlib_get_buffer (vm, bi0);
269  b1 = vlib_get_buffer (vm, bi1);
270  b2 = vlib_get_buffer (vm, bi2);
271  b3 = vlib_get_buffer (vm, bi3);
272 
273  /* RX interface handles */
274  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
275  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
276  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX];
277  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX];
278 
279  h0 = vlib_buffer_get_current (b0);
280  h1 = vlib_buffer_get_current (b1);
281  h2 = vlib_buffer_get_current (b2);
282  h3 = vlib_buffer_get_current (b3);
283 
284  if (do_trace)
285  {
286  if (b0->flags & VLIB_BUFFER_IS_TRACED)
287  {
288  l2fwd_trace_t *t =
289  vlib_add_trace (vm, node, b0, sizeof (*t));
290  t->sw_if_index = sw_if_index0;
291  t->bd_index = vnet_buffer (b0)->l2.bd_index;
292  clib_memcpy (t->src, h0->src_address, 6);
293  clib_memcpy (t->dst, h0->dst_address, 6);
294  }
295  if (b1->flags & VLIB_BUFFER_IS_TRACED)
296  {
297  l2fwd_trace_t *t =
298  vlib_add_trace (vm, node, b1, sizeof (*t));
299  t->sw_if_index = sw_if_index1;
300  t->bd_index = vnet_buffer (b1)->l2.bd_index;
301  clib_memcpy (t->src, h1->src_address, 6);
302  clib_memcpy (t->dst, h1->dst_address, 6);
303  }
304  if (b2->flags & VLIB_BUFFER_IS_TRACED)
305  {
306  l2fwd_trace_t *t =
307  vlib_add_trace (vm, node, b2, sizeof (*t));
308  t->sw_if_index = sw_if_index2;
309  t->bd_index = vnet_buffer (b2)->l2.bd_index;
310  clib_memcpy (t->src, h2->src_address, 6);
311  clib_memcpy (t->dst, h2->dst_address, 6);
312  }
313  if (b3->flags & VLIB_BUFFER_IS_TRACED)
314  {
315  l2fwd_trace_t *t =
316  vlib_add_trace (vm, node, b3, sizeof (*t));
317  t->sw_if_index = sw_if_index3;
318  t->bd_index = vnet_buffer (b3)->l2.bd_index;
319  clib_memcpy (t->src, h3->src_address, 6);
320  clib_memcpy (t->dst, h3->dst_address, 6);
321  }
322  }
323 
324  /* process 2 pkts */
325 #ifdef COUNTERS
326  em->counters[node_counter_base_index + L2FWD_ERROR_L2FWD] += 4;
327 #endif
328  /* *INDENT-OFF* */
329  l2fib_lookup_4 (msm->mac_table, &cached_key, &cached_result,
330  h0->dst_address, h1->dst_address,
331  h2->dst_address, h3->dst_address,
332  vnet_buffer (b0)->l2.bd_index,
333  vnet_buffer (b1)->l2.bd_index,
334  vnet_buffer (b2)->l2.bd_index,
335  vnet_buffer (b3)->l2.bd_index,
336  &key0, /* not used */
337  &key1, /* not used */
338  &key2, /* not used */
339  &key3, /* not used */
340  &bucket0, /* not used */
341  &bucket1, /* not used */
342  &bucket2, /* not used */
343  &bucket3, /* not used */
344  &result0,
345  &result1,
346  &result2,
347  &result3);
348  /* *INDENT-ON* */
349  l2fwd_process (vm, node, msm, em, b0, sw_if_index0, &result0,
350  &next0);
351  l2fwd_process (vm, node, msm, em, b1, sw_if_index1, &result1,
352  &next1);
353  l2fwd_process (vm, node, msm, em, b2, sw_if_index2, &result2,
354  &next2);
355  l2fwd_process (vm, node, msm, em, b3, sw_if_index3, &result3,
356  &next3);
357 
358  /* verify speculative enqueues, maybe switch current next frame */
359  /* if next0==next1==next_index then nothing special needs to be done */
360  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
361  to_next, n_left_to_next,
362  bi0, bi1, bi2, bi3,
363  next0, next1, next2, next3);
364  }
365 
366  while (n_left_from > 0 && n_left_to_next > 0)
367  {
368  u32 bi0;
369  vlib_buffer_t *b0;
370  u32 next0;
371  u32 sw_if_index0;
372  ethernet_header_t *h0;
373  l2fib_entry_key_t key0;
374  l2fib_entry_result_t result0;
375  u32 bucket0;
376 
377  /* speculatively enqueue b0 to the current next frame */
378  bi0 = from[0];
379  to_next[0] = bi0;
380  from += 1;
381  to_next += 1;
382  n_left_from -= 1;
383  n_left_to_next -= 1;
384 
385  b0 = vlib_get_buffer (vm, bi0);
386 
387  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
388 
389  h0 = vlib_buffer_get_current (b0);
390 
391  if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
392  {
393  l2fwd_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
394  t->sw_if_index = sw_if_index0;
395  t->bd_index = vnet_buffer (b0)->l2.bd_index;
396  clib_memcpy (t->src, h0->src_address, 6);
397  clib_memcpy (t->dst, h0->dst_address, 6);
398  }
399 
400  /* process 1 pkt */
401 #ifdef COUNTERS
402  em->counters[node_counter_base_index + L2FWD_ERROR_L2FWD] += 1;
403 #endif
404  l2fib_lookup_1 (msm->mac_table, &cached_key, &cached_result, h0->dst_address, vnet_buffer (b0)->l2.bd_index, &key0, /* not used */
405  &bucket0, /* not used */
406  &result0);
407  l2fwd_process (vm, node, msm, em, b0, sw_if_index0, &result0,
408  &next0);
409 
410  /* verify speculative enqueue, maybe switch current next frame */
411  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
412  to_next, n_left_to_next,
413  bi0, next0);
414  }
415 
416  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
417  }
418 
419  return frame->n_vectors;
420 }
421 
422 static uword
424  vlib_node_runtime_t * node, vlib_frame_t * frame)
425 {
426  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
427  return l2fwd_node_inline (vm, node, frame, 1 /* do_trace */ );
428  return l2fwd_node_inline (vm, node, frame, 0 /* do_trace */ );
429 }
430 
431 /* *INDENT-OFF* */
432 VLIB_REGISTER_NODE (l2fwd_node,static) = {
433  .function = l2fwd_node_fn,
434  .name = "l2-fwd",
435  .vector_size = sizeof (u32),
436  .format_trace = format_l2fwd_trace,
437  .type = VLIB_NODE_TYPE_INTERNAL,
438 
439  .n_errors = ARRAY_LEN(l2fwd_error_strings),
440  .error_strings = l2fwd_error_strings,
441 
442  .n_next_nodes = L2FWD_N_NEXT,
443 
444  /* edit / add dispositions here */
445  .next_nodes = {
446  [L2FWD_NEXT_L2_OUTPUT] = "l2-output",
447  [L2FWD_NEXT_FLOOD] = "l2-flood",
448  [L2FWD_NEXT_DROP] = "error-drop",
449  },
450 };
451 /* *INDENT-ON* */
452 
455 {
456  l2fwd_main_t *mp = &l2fwd_main;
457 
458  mp->vlib_main = vm;
459  mp->vnet_main = vnet_get_main ();
460 
461  /* init the hash table ptr */
462  mp->mac_table = get_mac_table ();
463 
464  /* Initialize the next nodes for each ethertype */
465  next_by_ethertype_init (&mp->l3_next);
466 
467  return 0;
468 }
469 
471 
472 
473 /** Add the L3 input node for this ethertype to the next nodes structure. */
474 void
476  ethernet_type_t type, u32 node_index)
477 {
478  l2fwd_main_t *mp = &l2fwd_main;
479  u32 next_index;
480 
481  next_index = vlib_node_add_next (vm, l2fwd_node.index, node_index);
482 
483  next_by_ethertype_register (&mp->l3_next, type, next_index);
484 }
485 
486 
487 /**
488  * Set subinterface forward enable/disable.
489  * The CLI format is:
490  * set interface l2 forward <interface> [disable]
491  */
492 static clib_error_t *
494 {
495  vnet_main_t *vnm = vnet_get_main ();
496  clib_error_t *error = 0;
497  u32 sw_if_index;
498  u32 enable;
499 
500  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
501  {
502  error = clib_error_return (0, "unknown interface `%U'",
503  format_unformat_error, input);
504  goto done;
505  }
506 
507  enable = 1;
508  if (unformat (input, "disable"))
509  {
510  enable = 0;
511  }
512 
513  /* set the interface flag */
514  if (l2input_intf_config (sw_if_index)->xconnect)
515  {
516  l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_XCONNECT, enable);
517  }
518  else
519  {
520  l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_FWD, enable);
521  }
522 
523 done:
524  return error;
525 }
526 
527 /*?
528  * Layer 2 unicast forwarding can be enabled and disabled on each
529  * interface and on each bridge-domain. Use this command to
530  * manage interfaces. It is enabled by default.
531  *
532  * @cliexpar
533  * Example of how to enable fowarding:
534  * @cliexcmd{set interface l2 forward GigabitEthernet0/8/0}
535  * Example of how to disable fowarding:
536  * @cliexcmd{set interface l2 forward GigabitEthernet0/8/0 disable}
537 ?*/
538 /* *INDENT-OFF* */
539 VLIB_CLI_COMMAND (int_fwd_cli, static) = {
540  .path = "set interface l2 forward",
541  .short_help = "set interface l2 forward <interface> [disable]",
542  .function = int_fwd,
543 };
544 /* *INDENT-ON* */
545 
546 /*
547  * fd.io coding-style-patch-verification: ON
548  *
549  * Local Variables:
550  * eval: (c-set-style "gnu")
551  * End:
552  */
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:46
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:472
ethernet_type_t
Definition: packet.h:43
#define TO_BVI_ERR_ETHERTYPE
Definition: l2_bvi.h:29
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:459
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:423
clib_error_t * l2fwd_init(vlib_main_t *vm)
Definition: l2_fwd.c:454
#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
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:982
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:418
unformat_function_t unformat_vnet_sw_interface
Definition: l2_fib.h:56
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:418
struct l2fib_entry_result_t::@150::@152 fields
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:1062
#define static_always_inline
Definition: clib.h:85
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:164
#define clib_error_return(e, args...)
Definition: error.h:111
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:119
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:493
vlib_error_main_t error_main
Definition: main.h:124
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:475
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:188
static char * l2fwd_error_strings[]
Definition: l2_fwd.c:102
static u8 * format_l2fwd_trace(u8 *s, va_list *args)
Definition: l2_fwd.c:68
#define PREDICT_FALSE(x)
Definition: clib.h:97
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:216
#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:350
l2fwd_main_t l2fwd_main
Definition: l2_fwd.c:81
u64 raw
Definition: l2_fib.h:72
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:199
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:1221
u16 n_vectors
Definition: node.h:344
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:82
vlib_main_t * vm
Definition: buffer.c:276
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:85
#define clib_memcpy(a, b, c)
Definition: string.h:69
#define ARRAY_LEN(x)
Definition: clib.h:59
l2fwd_error_t
Definition: l2_fwd.c:94
#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:455
int vlib_main(vlib_main_t *volatile vm, unformat_input_t *input)
Definition: main.c:1654
unsigned int u32
Definition: types.h:88
Definition: l2_fib.h:33
#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:108
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:482
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:253
clib_error_t * next_by_ethertype_init(next_by_ethertype_t *l3_next)
Definition: node.c:1191
u8 dst[6]
Definition: l2_fwd.c:61
#define vnet_buffer(b)
Definition: buffer.h:294
#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:152
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
Definition: node_funcs.h:58
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:240
u16 flags
Copy of main node flags.
Definition: node.h:449
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:141
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:67
u32 flags
buffer flags: VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:74
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:971
Definition: defs.h:46
u64 raw
Definition: l2_fib.h:47