FD.io VPP  v17.01.1-3-gc6833f8
Vector Packet Processing
udp_local.c
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1 /*
2  * node.c: udp packet processing
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/pg/pg.h>
20 #include <vnet/ip/udp.h>
21 #include <vnet/ip/udp_packet.h>
22 #include <vppinfra/sparse_vec.h>
23 
25 
26 #define foreach_udp_input_next \
27  _ (PUNT, "error-punt") \
28  _ (DROP, "error-drop") \
29  _ (ICMP4_ERROR, "ip4-icmp-error") \
30  _ (ICMP6_ERROR, "ip6-icmp-error")
31 
32 typedef enum
33 {
34 #define _(s,n) UDP_INPUT_NEXT_##s,
36 #undef _
39 
40 typedef struct
41 {
46 
47 u8 *
48 format_udp_rx_trace (u8 * s, va_list * args)
49 {
50  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
51  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
52  udp_rx_trace_t *t = va_arg (*args, udp_rx_trace_t *);
53 
54  s = format (s, "UDP: src-port %d dst-port %d%s",
55  clib_net_to_host_u16 (t->src_port),
56  clib_net_to_host_u16 (t->dst_port),
57  t->bound ? "" : " (no listener)");
58  return s;
59 }
60 
61 typedef struct
62 {
63  /* Sparse vector mapping udp dst_port in network byte order
64  to next index. */
68 
71 
74  vlib_node_runtime_t * node,
75  vlib_frame_t * from_frame, int is_ip4)
76 {
77  udp_input_runtime_t *rt = is_ip4 ?
78  (void *) vlib_node_get_runtime_data (vm, udp4_input_node.index)
79  : (void *) vlib_node_get_runtime_data (vm, udp6_input_node.index);
80  __attribute__ ((unused)) u32 n_left_from, next_index, *from, *to_next;
81  word n_no_listener = 0;
82  u8 punt_unknown = rt->punt_unknown;
83 
84  from = vlib_frame_vector_args (from_frame);
85  n_left_from = from_frame->n_vectors;
86 
87  next_index = node->cached_next_index;
88 
89  while (n_left_from > 0)
90  {
91  u32 n_left_to_next;
92 
93  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
94 
95  while (n_left_from >= 4 && n_left_to_next >= 2)
96  {
97  u32 bi0, bi1;
98  vlib_buffer_t *b0, *b1;
99  udp_header_t *h0 = 0, *h1 = 0;
100  u32 i0, i1, dst_port0, dst_port1;
101  u32 advance0, advance1;
102  u32 error0, next0, error1, next1;
103 
104  /* Prefetch next iteration. */
105  {
106  vlib_buffer_t *p2, *p3;
107 
108  p2 = vlib_get_buffer (vm, from[2]);
109  p3 = vlib_get_buffer (vm, from[3]);
110 
111  vlib_prefetch_buffer_header (p2, LOAD);
112  vlib_prefetch_buffer_header (p3, LOAD);
113 
114  CLIB_PREFETCH (p2->data, sizeof (h0[0]), LOAD);
115  CLIB_PREFETCH (p3->data, sizeof (h1[0]), LOAD);
116  }
117 
118  bi0 = from[0];
119  bi1 = from[1];
120  to_next[0] = bi0;
121  to_next[1] = bi1;
122  from += 2;
123  to_next += 2;
124  n_left_to_next -= 2;
125  n_left_from -= 2;
126 
127  b0 = vlib_get_buffer (vm, bi0);
128  b1 = vlib_get_buffer (vm, bi1);
129 
130  /* ip4/6_local hands us the ip header, not the udp header */
131  if (is_ip4)
132  {
133  advance0 = sizeof (ip4_header_t);
134  advance1 = sizeof (ip4_header_t);
135  }
136  else
137  {
138  advance0 = sizeof (ip6_header_t);
139  advance1 = sizeof (ip6_header_t);
140  }
141 
142  if (PREDICT_FALSE (b0->current_length < advance0 + sizeof (*h0)))
143  {
144  error0 = UDP_ERROR_LENGTH_ERROR;
145  next0 = UDP_INPUT_NEXT_DROP;
146  }
147  else
148  {
149  vlib_buffer_advance (b0, advance0);
150  h0 = vlib_buffer_get_current (b0);
151  error0 = next0 = 0;
152  if (PREDICT_FALSE (clib_net_to_host_u16 (h0->length) >
153  vlib_buffer_length_in_chain (vm, b0)))
154  {
155  error0 = UDP_ERROR_LENGTH_ERROR;
156  next0 = UDP_INPUT_NEXT_DROP;
157  }
158  }
159 
160  if (PREDICT_FALSE (b1->current_length < advance1 + sizeof (*h1)))
161  {
162  error1 = UDP_ERROR_LENGTH_ERROR;
163  next1 = UDP_INPUT_NEXT_DROP;
164  }
165  else
166  {
167  vlib_buffer_advance (b1, advance1);
168  h1 = vlib_buffer_get_current (b1);
169  error1 = next1 = 0;
170  if (PREDICT_FALSE (clib_net_to_host_u16 (h1->length) >
171  vlib_buffer_length_in_chain (vm, b1)))
172  {
173  error1 = UDP_ERROR_LENGTH_ERROR;
174  next1 = UDP_INPUT_NEXT_DROP;
175  }
176  }
177 
178  /* Index sparse array with network byte order. */
179  dst_port0 = (error0 == 0) ? h0->dst_port : 0;
180  dst_port1 = (error1 == 0) ? h1->dst_port : 0;
181  sparse_vec_index2 (rt->next_by_dst_port, dst_port0, dst_port1,
182  &i0, &i1);
183  next0 = (error0 == 0) ? vec_elt (rt->next_by_dst_port, i0) : next0;
184  next1 = (error1 == 0) ? vec_elt (rt->next_by_dst_port, i1) : next1;
185 
187  {
188  // move the pointer back so icmp-error can find the
189  // ip packet header
190  vlib_buffer_advance (b0, -(word) advance0);
191 
192  if (PREDICT_FALSE (punt_unknown))
193  {
194  b0->error = node->errors[UDP_ERROR_PUNT];
195  next0 = UDP_INPUT_NEXT_PUNT;
196  }
197  else if (is_ip4)
198  {
200  ICMP4_destination_unreachable,
201  ICMP4_destination_unreachable_port_unreachable,
202  0);
203  next0 = UDP_INPUT_NEXT_ICMP4_ERROR;
204  n_no_listener++;
205  }
206  else
207  {
209  ICMP6_destination_unreachable,
210  ICMP6_destination_unreachable_port_unreachable,
211  0);
212  next0 = UDP_INPUT_NEXT_ICMP6_ERROR;
213  n_no_listener++;
214  }
215  }
216  else
217  {
218  b0->error = node->errors[UDP_ERROR_NONE];
219  // advance to the payload
220  vlib_buffer_advance (b0, sizeof (*h0));
221  }
222 
224  {
225  // move the pointer back so icmp-error can find the
226  // ip packet header
227  vlib_buffer_advance (b1, -(word) advance1);
228 
229  if (PREDICT_FALSE (punt_unknown))
230  {
231  b1->error = node->errors[UDP_ERROR_PUNT];
232  next1 = UDP_INPUT_NEXT_PUNT;
233  }
234  else if (is_ip4)
235  {
237  ICMP4_destination_unreachable,
238  ICMP4_destination_unreachable_port_unreachable,
239  0);
240  next1 = UDP_INPUT_NEXT_ICMP4_ERROR;
241  n_no_listener++;
242  }
243  else
244  {
246  ICMP6_destination_unreachable,
247  ICMP6_destination_unreachable_port_unreachable,
248  0);
249  next1 = UDP_INPUT_NEXT_ICMP6_ERROR;
250  n_no_listener++;
251  }
252  }
253  else
254  {
255  b1->error = node->errors[UDP_ERROR_NONE];
256  // advance to the payload
257  vlib_buffer_advance (b1, sizeof (*h1));
258  }
259 
261  {
262  udp_rx_trace_t *tr = vlib_add_trace (vm, node,
263  b0, sizeof (*tr));
264  if (b0->error != node->errors[UDP_ERROR_LENGTH_ERROR])
265  {
266  tr->src_port = h0 ? h0->src_port : 0;
267  tr->dst_port = h0 ? h0->dst_port : 0;
268  tr->bound = (next0 != UDP_INPUT_NEXT_ICMP4_ERROR &&
269  next0 != UDP_INPUT_NEXT_ICMP6_ERROR);
270  }
271  }
273  {
274  udp_rx_trace_t *tr = vlib_add_trace (vm, node,
275  b1, sizeof (*tr));
276  if (b1->error != node->errors[UDP_ERROR_LENGTH_ERROR])
277  {
278  tr->src_port = h1 ? h1->src_port : 0;
279  tr->dst_port = h1 ? h1->dst_port : 0;
280  tr->bound = (next1 != UDP_INPUT_NEXT_ICMP4_ERROR &&
281  next1 != UDP_INPUT_NEXT_ICMP6_ERROR);
282  }
283  }
284 
285  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
286  to_next, n_left_to_next,
287  bi0, bi1, next0, next1);
288  }
289 
290  while (n_left_from > 0 && n_left_to_next > 0)
291  {
292  u32 bi0;
293  vlib_buffer_t *b0;
294  udp_header_t *h0 = 0;
295  u32 i0, next0;
296  u32 advance0;
297 
298  bi0 = from[0];
299  to_next[0] = bi0;
300  from += 1;
301  to_next += 1;
302  n_left_from -= 1;
303  n_left_to_next -= 1;
304 
305  b0 = vlib_get_buffer (vm, bi0);
306 
307  /* ip4/6_local hands us the ip header, not the udp header */
308  if (is_ip4)
309  advance0 = sizeof (ip4_header_t);
310  else
311  advance0 = sizeof (ip6_header_t);
312 
313  if (PREDICT_FALSE (b0->current_length < advance0 + sizeof (*h0)))
314  {
315  b0->error = node->errors[UDP_ERROR_LENGTH_ERROR];
316  next0 = UDP_INPUT_NEXT_DROP;
317  goto trace_x1;
318  }
319 
320  vlib_buffer_advance (b0, advance0);
321 
322  h0 = vlib_buffer_get_current (b0);
323 
324  if (PREDICT_TRUE (clib_net_to_host_u16 (h0->length) <=
325  vlib_buffer_length_in_chain (vm, b0)))
326  {
328  next0 = vec_elt (rt->next_by_dst_port, i0);
329 
331  {
332  // move the pointer back so icmp-error can find the
333  // ip packet header
334  vlib_buffer_advance (b0, -(word) advance0);
335 
336  if (PREDICT_FALSE (punt_unknown))
337  {
338  b0->error = node->errors[UDP_ERROR_PUNT];
339  next0 = UDP_INPUT_NEXT_PUNT;
340  }
341  else if (is_ip4)
342  {
344  ICMP4_destination_unreachable,
345  ICMP4_destination_unreachable_port_unreachable,
346  0);
347  next0 = UDP_INPUT_NEXT_ICMP4_ERROR;
348  n_no_listener++;
349  }
350  else
351  {
353  ICMP6_destination_unreachable,
354  ICMP6_destination_unreachable_port_unreachable,
355  0);
356  next0 = UDP_INPUT_NEXT_ICMP6_ERROR;
357  n_no_listener++;
358  }
359  }
360  else
361  {
362  b0->error = node->errors[UDP_ERROR_NONE];
363  // advance to the payload
364  vlib_buffer_advance (b0, sizeof (*h0));
365  }
366  }
367  else
368  {
369  b0->error = node->errors[UDP_ERROR_LENGTH_ERROR];
370  next0 = UDP_INPUT_NEXT_DROP;
371  }
372 
373  trace_x1:
375  {
376  udp_rx_trace_t *tr = vlib_add_trace (vm, node,
377  b0, sizeof (*tr));
378  if (b0->error != node->errors[UDP_ERROR_LENGTH_ERROR])
379  {
380  tr->src_port = h0->src_port;
381  tr->dst_port = h0->dst_port;
382  tr->bound = (next0 != UDP_INPUT_NEXT_ICMP4_ERROR &&
383  next0 != UDP_INPUT_NEXT_ICMP6_ERROR);
384  }
385  }
386 
387  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
388  to_next, n_left_to_next,
389  bi0, next0);
390  }
391 
392  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
393  }
394  vlib_error_count (vm, node->node_index, UDP_ERROR_NO_LISTENER,
395  n_no_listener);
396  return from_frame->n_vectors;
397 }
398 
399 static char *udp_error_strings[] = {
400 #define udp_error(n,s) s,
401 #include "udp_error.def"
402 #undef udp_error
403 };
404 
405 static uword
407  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
408 {
409  return udp46_input_inline (vm, node, from_frame, 1 /* is_ip4 */ );
410 }
411 
412 static uword
414  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
415 {
416  return udp46_input_inline (vm, node, from_frame, 0 /* is_ip4 */ );
417 }
418 
419 
420 /* *INDENT-OFF* */
422  .function = udp4_input,
423  .name = "ip4-udp-lookup",
424  /* Takes a vector of packets. */
425  .vector_size = sizeof (u32),
426 
427  .runtime_data_bytes = sizeof (udp_input_runtime_t),
428 
429  .n_errors = UDP_N_ERROR,
430  .error_strings = udp_error_strings,
431 
432  .n_next_nodes = UDP_INPUT_N_NEXT,
433  .next_nodes = {
434 #define _(s,n) [UDP_INPUT_NEXT_##s] = n,
436 #undef _
437  },
438 
439  .format_buffer = format_udp_header,
440  .format_trace = format_udp_rx_trace,
441  .unformat_buffer = unformat_udp_header,
442 };
443 /* *INDENT-ON* */
444 
446 
447 /* *INDENT-OFF* */
449  .function = udp6_input,
450  .name = "ip6-udp-lookup",
451  /* Takes a vector of packets. */
452  .vector_size = sizeof (u32),
453 
454  .runtime_data_bytes = sizeof (udp_input_runtime_t),
455 
456  .n_errors = UDP_N_ERROR,
457  .error_strings = udp_error_strings,
458 
459  .n_next_nodes = UDP_INPUT_N_NEXT,
460  .next_nodes = {
461 #define _(s,n) [UDP_INPUT_NEXT_##s] = n,
463 #undef _
464  },
465 
466  .format_buffer = format_udp_header,
467  .format_trace = format_udp_rx_trace,
468  .unformat_buffer = unformat_udp_header,
469 };
470 /* *INDENT-ON* */
471 
473 
474 static void
476  udp_dst_port_t dst_port, char *dst_port_name, u8 is_ip4)
477 {
479  u32 i;
480 
481  vec_add2 (um->dst_port_infos[is_ip4], pi, 1);
482  i = pi - um->dst_port_infos[is_ip4];
483 
484  pi->name = dst_port_name;
485  pi->dst_port = dst_port;
486  pi->next_index = pi->node_index = ~0;
487 
488  hash_set (um->dst_port_info_by_dst_port[is_ip4], dst_port, i);
489 
490  if (pi->name)
491  hash_set_mem (um->dst_port_info_by_name[is_ip4], pi->name, i);
492 }
493 
494 void
496  udp_dst_port_t dst_port, u32 node_index, u8 is_ip4)
497 {
498  udp_main_t *um = &udp_main;
501  u16 *n;
502 
503  {
505  if (error)
506  clib_error_report (error);
507  }
508 
509  pi = udp_get_dst_port_info (um, dst_port, is_ip4);
510  if (!pi)
511  {
512  add_dst_port (um, dst_port, 0, is_ip4);
513  pi = udp_get_dst_port_info (um, dst_port, is_ip4);
514  ASSERT (pi);
515  }
516 
517  pi->node_index = node_index;
518  pi->next_index = vlib_node_add_next (vm,
519  is_ip4 ? udp4_input_node.index
520  : udp6_input_node.index, node_index);
521 
522  /* Setup udp protocol -> next index sparse vector mapping. */
524  (vm, is_ip4 ? udp4_input_node.index : udp6_input_node.index);
526  clib_host_to_net_u16 (dst_port));
527  n[0] = pi->next_index;
528 }
529 
530 void
531 udp_punt_unknown (vlib_main_t * vm, u8 is_ip4, u8 is_add)
532 {
534 
535  {
537  if (error)
538  clib_error_report (error);
539  }
540 
542  (vm, is_ip4 ? udp4_input_node.index : udp6_input_node.index);
543 
544  rt->punt_unknown = is_add;
545 }
546 
547 /* Parse a UDP header. */
548 uword
549 unformat_udp_header (unformat_input_t * input, va_list * args)
550 {
551  u8 **result = va_arg (*args, u8 **);
552  udp_header_t *udp;
553  __attribute__ ((unused)) int old_length;
554  u16 src_port, dst_port;
555 
556  /* Allocate space for IP header. */
557  {
558  void *p;
559 
560  old_length = vec_len (*result);
561  vec_add2 (*result, p, sizeof (ip4_header_t));
562  udp = p;
563  }
564 
565  memset (udp, 0, sizeof (udp[0]));
566  if (unformat (input, "src-port %d dst-port %d", &src_port, &dst_port))
567  {
568  udp->src_port = clib_host_to_net_u16 (src_port);
569  udp->dst_port = clib_host_to_net_u16 (dst_port);
570  return 1;
571  }
572  return 0;
573 }
574 
575 static void
576 udp_setup_node (vlib_main_t * vm, u32 node_index)
577 {
578  vlib_node_t *n = vlib_get_node (vm, node_index);
579  pg_node_t *pn = pg_get_node (node_index);
580 
584 }
585 
586 clib_error_t *
588 {
590  udp_main_t *um = &udp_main;
591  int i;
592 
593  {
594  clib_error_t *error;
595  error = vlib_call_init_function (vm, udp_init);
596  if (error)
597  clib_error_report (error);
598  }
599 
600 
601  for (i = 0; i < 2; i++)
602  {
603  um->dst_port_info_by_name[i] = hash_create_string (0, sizeof (uword));
604  um->dst_port_info_by_dst_port[i] = hash_create (0, sizeof (uword));
605  }
606 
607  udp_setup_node (vm, udp4_input_node.index);
608  udp_setup_node (vm, udp6_input_node.index);
609 
611 
613  ( /* elt bytes */ sizeof (rt->next_by_dst_port[0]),
614  /* bits in index */ BITS (((udp_header_t *) 0)->dst_port));
615 
616  rt->punt_unknown = 0;
617 
618 #define _(n,s) add_dst_port (um, UDP_DST_PORT_##s, #s, 1 /* is_ip4 */);
620 #undef _
622 
623  rt->next_by_dst_port = sparse_vec_new
624  ( /* elt bytes */ sizeof (rt->next_by_dst_port[0]),
625  /* bits in index */ BITS (((udp_header_t *) 0)->dst_port));
626 
627  rt->punt_unknown = 0;
628 
629 #define _(n,s) add_dst_port (um, UDP_DST_PORT_##s, #s, 0 /* is_ip4 */);
631 #undef _
632  ip4_register_protocol (IP_PROTOCOL_UDP, udp4_input_node.index);
633  /* Note: ip6 differs from ip4, UDP is hotwired to ip6-udp-lookup */
634  return 0;
635 }
636 
638 
639 /*
640  * fd.io coding-style-patch-verification: ON
641  *
642  * Local Variables:
643  * eval: (c-set-style "gnu")
644  * End:
645  */
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
#define hash_set(h, key, value)
Definition: hash.h:254
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:343
#define CLIB_UNUSED(x)
Definition: clib.h:79
uword unformat(unformat_input_t *i, char *fmt,...)
Definition: unformat.c:966
clib_error_t * udp_local_init(vlib_main_t *vm)
Definition: udp_local.c:587
static char * udp_error_strings[]
Definition: udp_local.c:399
udp_main_t udp_main
Definition: udp_local.c:24
#define PREDICT_TRUE(x)
Definition: clib.h:98
uword * dst_port_info_by_dst_port[N_UDP_AF]
Definition: udp.h:102
static void vlib_error_count(vlib_main_t *vm, uword node_index, uword counter, uword increment)
Definition: error_funcs.h:55
clib_error_t * udp_init(vlib_main_t *vm)
Definition: udp_init.c:43
Definition: udp.h:96
u32 node_index
Definition: udp.h:83
struct _vlib_node_registration vlib_node_registration_t
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:521
void udp_register_dst_port(vlib_main_t *vm, udp_dst_port_t dst_port, u32 node_index, u8 is_ip4)
Definition: udp_local.c:495
#define hash_set_mem(h, key, value)
Definition: hash.h:274
static udp_dst_port_info_t * udp_get_dst_port_info(udp_main_t *um, udp_dst_port_t dst_port, u8 is_ip4)
Definition: udp.h:109
#define clib_error_report(e)
Definition: error.h:125
void ip4_register_protocol(u32 protocol, u32 node_index)
Definition: ip4_forward.c:1856
vlib_error_t * errors
Definition: node.h:419
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
Definition: buffer_funcs.h:100
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1063
static void add_dst_port(udp_main_t *um, udp_dst_port_t dst_port, char *dst_port_name, u8 is_ip4)
Definition: udp_local.c:475
static pg_node_t * pg_get_node(uword node_index)
Definition: pg.h:350
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
#define always_inline
Definition: clib.h:84
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:194
#define sparse_vec_validate(v, i)
Definition: sparse_vec.h:214
static void sparse_vec_index2(void *v, u32 si0, u32 si1, u32 *i0_return, u32 *i1_return)
Definition: sparse_vec.h:160
#define vlib_call_init_function(vm, x)
Definition: init.h:161
#define hash_create_string(elts, value_bytes)
Definition: hash.h:652
void icmp6_error_set_vnet_buffer(vlib_buffer_t *b, u8 type, u8 code, u32 data)
Definition: icmp6.c:509
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:82
udp_dst_port_info_t * dst_port_infos[N_UDP_AF]
Definition: udp.h:98
uword * dst_port_info_by_name[N_UDP_AF]
Definition: udp.h:101
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:109
#define PREDICT_FALSE(x)
Definition: clib.h:97
format_function_t * format_buffer
Definition: node.h:311
#define vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1)
Finish enqueueing two buffers forward in the graph.
Definition: buffer_node.h:70
#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
VLIB_NODE_FUNCTION_MULTIARCH(udp4_input_node, udp4_input)
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:121
static void udp_setup_node(vlib_main_t *vm, u32 node_index)
Definition: udp_local.c:576
u16 n_vectors
Definition: node.h:344
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:82
vlib_node_registration_t udp4_input_node
(constructor) VLIB_REGISTER_NODE (udp4_input_node)
Definition: udp_local.c:69
void icmp4_error_set_vnet_buffer(vlib_buffer_t *b, u8 type, u8 code, u32 data)
Definition: icmp4.c:431
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:207
unformat_function_t * unformat_buffer
Definition: node.h:312
unformat_function_t * unformat_edit
Definition: pg.h:307
static uword udp46_input_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_ip4)
Definition: udp_local.c:73
u16 * next_by_dst_port
Definition: udp_local.c:65
void udp_punt_unknown(vlib_main_t *vm, u8 is_ip4, u8 is_add)
Definition: udp_local.c:531
vlib_node_registration_t udp6_input_node
(constructor) VLIB_REGISTER_NODE (udp6_input_node)
Definition: udp_local.c:70
udp_dst_port_t
Definition: udp.h:60
#define hash_create(elts, value_bytes)
Definition: hash.h:658
static uword sparse_vec_index(void *v, uword sparse_index)
Definition: sparse_vec.h:152
u16 cached_next_index
Definition: node.h:463
#define foreach_udp4_dst_port
Definition: udp.h:37
#define ASSERT(truth)
unsigned int u32
Definition: types.h:88
udp_input_next_t
Definition: udp_local.c:32
#define foreach_udp_input_next
Definition: udp_local.c:26
udp_dst_port_t dst_port
Definition: udp.h:80
char * name
Definition: udp.h:77
static uword udp6_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: udp_local.c:413
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:95
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
#define vec_elt(v, i)
Get vector value at index i.
static uword udp4_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: udp_local.c:406
unsigned short u16
Definition: types.h:57
i64 word
Definition: types.h:111
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
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
uword unformat_udp_header(unformat_input_t *input, va_list *args)
Definition: udp_local.c:549
u8 * format_udp_rx_trace(u8 *s, va_list *args)
Definition: udp_local.c:48
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:170
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:418
u32 next_index
Definition: udp.h:86
u8 data[0]
Packet data.
Definition: buffer.h:158
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
Definition: node_funcs.h:58
format_function_t format_udp_header
Definition: format.h:102
struct _unformat_input_t unformat_input_t
static void * sparse_vec_new(uword elt_bytes, uword sparse_index_bits)
Definition: sparse_vec.h:71
u32 flags
buffer flags: VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:85
#define BITS(x)
Definition: clib.h:58
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
unformat_function_t unformat_pg_udp_header
Definition: format.h:104
Definition: pg.h:304
#define SPARSE_VEC_INVALID_INDEX
Definition: sparse_vec.h:68