FD.io VPP  v16.09
Vector Packet Processing
proxy_node.c
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1 /*
2  * proxy_node.c: dhcp proxy node 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/dhcp/proxy.h>
21 
22 static char * dhcp_proxy_error_strings[] = {
23 #define dhcp_proxy_error(n,s) s,
24 #include "proxy_error.def"
25 #undef dhcp_proxy_error
26 };
27 
28 #define foreach_dhcp_proxy_to_server_input_next \
29  _ (DROP, "error-drop") \
30  _ (LOOKUP, "ip4-lookup") \
31  _ (SEND_TO_CLIENT, "dhcp-proxy-to-client")
32 
33 typedef enum {
34 #define _(s,n) DHCP_PROXY_TO_SERVER_INPUT_NEXT_##s,
36 #undef _
39 
40 typedef struct {
41  /* 0 => to server, 1 => to client */
42  int which;
48 
49 #define VPP_DHCP_OPTION82_SUB1_SIZE 6
50 #define VPP_DHCP_OPTION82_SUB5_SIZE 6
51 #define VPP_DHCP_OPTION82_VSS_SIZE 12
52 #define VPP_DHCP_OPTION82_SIZE (VPP_DHCP_OPTION82_SUB1_SIZE + \
53  VPP_DHCP_OPTION82_SUB5_SIZE + \
54  VPP_DHCP_OPTION82_VSS_SIZE +3)
55 
58 
59 u8 * format_dhcp_proxy_trace (u8 * s, va_list * args)
60 {
61  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
62  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
63  dhcp_proxy_trace_t * t = va_arg (*args, dhcp_proxy_trace_t *);
64 
65  if (t->which == 0)
66  s = format (s, "DHCP proxy: sent to server %U\n",
68  else
69  s = format (s, "DHCP proxy: broadcast to client from %U\n",
71 
72  if (t->error != (u32)~0)
73  s = format (s, " error: %s\n", dhcp_proxy_error_strings[t->error]);
74 
75  s = format (s, " original_sw_if_index: %d, sw_if_index: %d\n",
77 
78  return s;
79 }
80 
82 {
83  dhcp_header_t * h = va_arg (*args, dhcp_header_t *);
84  u32 max_header_bytes = va_arg (*args, u32);
85  u32 header_bytes;
86 
87  header_bytes = sizeof (h[0]);
88  if (max_header_bytes != 0 && header_bytes > max_header_bytes)
89  return format (s, "dhcp header truncated");
90 
91  s = format (s, "DHCP Proxy");
92 
93  return s;
94 }
95 
96 static uword
98  vlib_node_runtime_t * node,
99  vlib_frame_t * from_frame)
100 {
101  u32 n_left_from, next_index, * from, * to_next;
103  from = vlib_frame_vector_args (from_frame);
104  n_left_from = from_frame->n_vectors;
105  u32 pkts_to_server=0, pkts_to_client=0, pkts_no_server=0;
106  u32 pkts_no_interface_address=0;
107  u32 pkts_too_big=0;
108  ip4_main_t * im = &ip4_main;
109 
110  next_index = node->cached_next_index;
111 
112  while (n_left_from > 0)
113  {
114  u32 n_left_to_next;
115 
116  vlib_get_next_frame (vm, node, next_index,
117  to_next, n_left_to_next);
118 
119  while (n_left_from > 0 && n_left_to_next > 0)
120  {
121  u32 bi0;
122  vlib_buffer_t * b0;
123  udp_header_t * u0;
124  dhcp_header_t * h0;
125  ip4_header_t * ip0;
126  u32 next0;
127  u32 old0, new0;
128  ip_csum_t sum0;
129  u32 error0 = (u32) ~0;
130  u32 sw_if_index = 0;
131  u32 original_sw_if_index = 0;
132  u8 *end = NULL;
133  u32 fib_index, server_index;
134  dhcp_server_t * server;
135  u32 rx_sw_if_index;
136 
137  bi0 = from[0];
138  to_next[0] = bi0;
139  from += 1;
140  to_next += 1;
141  n_left_from -= 1;
142  n_left_to_next -= 1;
143 
144  b0 = vlib_get_buffer (vm, bi0);
145 
146  h0 = vlib_buffer_get_current (b0);
147 
148  /*
149  * udp_local hands us the DHCP header, need udp hdr,
150  * ip hdr to relay to server
151  */
152  vlib_buffer_advance (b0, -(sizeof(*u0)));
153  u0 = vlib_buffer_get_current (b0);
154 
155  /* This blows. Return traffic has src_port = 67, dst_port = 67 */
156  if (u0->src_port == clib_net_to_host_u16(UDP_DST_PORT_dhcp_to_server))
157  {
158  vlib_buffer_advance (b0, sizeof(*u0));
159  next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_SEND_TO_CLIENT;
160  error0 = 0;
161  pkts_to_client++;
162  goto do_enqueue;
163  }
164 
165  rx_sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_RX];
166 
167  fib_index = im->fib_index_by_sw_if_index [rx_sw_if_index];
168 
169  if (fib_index < vec_len(dpm->dhcp_server_index_by_rx_fib_index))
170  server_index = dpm->dhcp_server_index_by_rx_fib_index[fib_index];
171  else
172  server_index = 0;
173 
175  server_index)))
176  {
177  no_server:
178  error0 = DHCP_PROXY_ERROR_NO_SERVER;
179  next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_DROP;
180  pkts_no_server++;
181  goto do_trace;
182  }
183 
184  server = pool_elt_at_index (dpm->dhcp_servers, server_index);
185  if (server->valid == 0)
186  goto no_server;
187 
188  vlib_buffer_advance (b0, -(sizeof(*ip0)));
189  ip0 = vlib_buffer_get_current (b0);
190 
191  /* disable UDP checksum */
192  u0->checksum = 0;
193  sum0 = ip0->checksum;
194  old0 = ip0->dst_address.as_u32;
195  new0 = server->dhcp_server.as_u32;
196  ip0->dst_address.as_u32 = server->dhcp_server.as_u32;
197  sum0 = ip_csum_update (sum0, old0, new0,
198  ip4_header_t /* structure */,
199  dst_address /* changed member */);
200  ip0->checksum = ip_csum_fold (sum0);
201 
202  sum0 = ip0->checksum;
203  old0 = ip0->src_address.as_u32;
204  new0 = server->dhcp_src_address.as_u32;
205  ip0->src_address.as_u32 = new0;
206  sum0 = ip_csum_update (sum0, old0, new0,
207  ip4_header_t /* structure */,
208  src_address /* changed member */);
209  ip0->checksum = ip_csum_fold (sum0);
210 
211  /* Send to DHCP server via the configured FIB */
212  vnet_buffer(b0)->sw_if_index[VLIB_TX] =
213  server->server_fib_index;
214 
216  pkts_to_server++;
217 
218  if (server->insert_option_82)
219  {
220  u32 fib_index, fib_id, opt82_fib_id=0, opt82_oui=0;
221  ip4_fib_t * fib;
222  dhcp_option_t *o = (dhcp_option_t *) h0->options;
223  u32 len = 0;
225 
226  fib_index = im->fib_index_by_sw_if_index
227  [vnet_buffer(b0)->sw_if_index[VLIB_RX]];
228  fib = vec_elt_at_index (im->fibs, fib_index);
229  fib_id = fib->table_id;
230 
231  end = b0->data + b0->current_data + b0->current_length;
232  /* TLVs are not performance-friendly... */
233  while (o->option != 0xFF /* end of options */ && (u8 *)o < end)
234  o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
235 
237  // start write at (option*)o, some packets have padding
238  if (((u8 *)o - (u8 *)b0->data + VPP_DHCP_OPTION82_SIZE) > fl->n_data_bytes)
239  {
240  next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_DROP;
241  pkts_too_big++;
242  goto do_trace;
243  }
244 
245  if ((o->option == 0xFF) && ((u8 *)o <= end))
246  {
247  vnet_main_t *vnm = vnet_get_main();
248  u16 old_l0, new_l0;
249  ip4_address_t _ia0, * ia0 = &_ia0;
250  uword *p_vss;
251  vss_info *vss;
252  vnet_sw_interface_t *swif;
253  sw_if_index = 0;
254  original_sw_if_index = 0;
255 
256  original_sw_if_index = sw_if_index =
257  vnet_buffer(b0)->sw_if_index[VLIB_RX];
258  swif = vnet_get_sw_interface (vnm, sw_if_index);
260  sw_if_index = swif->unnumbered_sw_if_index;
261 
262  p_vss = hash_get (dpm->opt82vss_index_by_vrf_id,
263  fib_id);
264  if (p_vss)
265  {
266  vss = pool_elt_at_index (dpm->opt82vss, p_vss[0]);
267  opt82_oui = vss->vpn_id.oui;
268  opt82_fib_id = vss->vpn_id.fib_id;
269  }
270  /*
271  * Get the first ip4 address on the [client-side]
272  * RX interface, if not unnumbered. otherwise use
273  * the loopback interface's ip address.
274  */
275  ia0 = ip4_interface_first_address(&ip4_main, sw_if_index, 0);
276 
277  if (ia0 == 0)
278  {
279  error0 = DHCP_PROXY_ERROR_NO_INTERFACE_ADDRESS;
280  next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_DROP;
281  pkts_no_interface_address++;
282  goto do_trace;
283  }
284 
285  /* Add option 82 */
286  o->option = 82; /* option 82 */
287  o->length = 12; /* 12 octets to follow */
288  o->data[0] = 1; /* suboption 1, circuit ID (=FIB id) */
289  o->data[1] = 4; /* length of suboption */
290  o->data[2] = (original_sw_if_index >> 24) & 0xFF;
291  o->data[3] = (original_sw_if_index >> 16) & 0xFF;
292  o->data[4] = (original_sw_if_index >> 8) & 0xFF;
293  o->data[5] = (original_sw_if_index >> 0) & 0xFF;
294  o->data[6] = 5; /* suboption 5 (client RX intfc address) */
295  o->data[7] = 4; /* length 4 */
296  o->data[8] = ia0->as_u8[0];
297  o->data[9] = ia0->as_u8[1];
298  o->data[10] = ia0->as_u8[2];
299  o->data[11] = ia0->as_u8[3];
300  o->data[12] = 0xFF;
301  if (opt82_oui !=0 || opt82_fib_id != 0)
302  {
303  o->data[12] = 151; /* vss suboption */
304  if (255 == opt82_fib_id) {
305  o->data[13] = 1; /* length */
306  o->data[14] = 255; /* vss option type */
307  o->data[15] = 152; /* vss control suboption */
308  o->data[16] = 0; /* length */
309  /* and a new "end-of-options" option (0xff) */
310  o->data[17] = 0xFF;
311  o->length += 5;
312  } else {
313  o->data[13] = 8; /* length */
314  o->data[14] = 1; /* vss option type */
315  o->data[15] = (opt82_oui >> 16) & 0xff;
316  o->data[16] = (opt82_oui >> 8) & 0xff;
317  o->data[17] = (opt82_oui ) & 0xff;
318  o->data[18] = (opt82_fib_id >> 24) & 0xff;
319  o->data[19] = (opt82_fib_id >> 16) & 0xff;
320  o->data[20] = (opt82_fib_id >> 8) & 0xff;
321  o->data[21] = (opt82_fib_id) & 0xff;
322  o->data[22] = 152; /* vss control suboption */
323  o->data[23] = 0; /* length */
324 
325  /* and a new "end-of-options" option (0xff) */
326  o->data[24] = 0xFF;
327  o->length += 12;
328  }
329  }
330 
331  len = o->length + 3;
332  b0->current_length += len;
333  /* Fix IP header length and checksum */
334  old_l0 = ip0->length;
335  new_l0 = clib_net_to_host_u16 (old_l0);
336  new_l0 += len;
337  new_l0 = clib_host_to_net_u16 (new_l0);
338  ip0->length = new_l0;
339  sum0 = ip0->checksum;
340  sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
341  length /* changed member */);
342  ip0->checksum = ip_csum_fold (sum0);
343 
344  /* Fix UDP length */
345  new_l0 = clib_net_to_host_u16 (u0->length);
346  new_l0 += len;
347  u0->length = clib_host_to_net_u16 (new_l0);
348  } else {
350  (vm, dhcp_proxy_to_server_node.index,
351  DHCP_PROXY_ERROR_OPTION_82_ERROR, 1);
352  }
353  }
354 
355  next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_LOOKUP;
356 
357  do_trace:
359  {
360  dhcp_proxy_trace_t *tr = vlib_add_trace (vm, node,
361  b0, sizeof (*tr));
362  tr->which = 0; /* to server */
363  tr->error = error0;
364  tr->original_sw_if_index = original_sw_if_index;
365  tr->sw_if_index = sw_if_index;
366  if (next0 == DHCP_PROXY_TO_SERVER_INPUT_NEXT_LOOKUP)
368  }
369 
370  do_enqueue:
371  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
372  to_next, n_left_to_next,
373  bi0, next0);
374  }
375 
376  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
377  }
378 
380  DHCP_PROXY_ERROR_RELAY_TO_CLIENT,
381  pkts_to_client);
383  DHCP_PROXY_ERROR_RELAY_TO_SERVER,
384  pkts_to_server);
386  DHCP_PROXY_ERROR_NO_SERVER,
387  pkts_no_server);
389  DHCP_PROXY_ERROR_NO_INTERFACE_ADDRESS,
390  pkts_no_interface_address);
392  DHCP_PROXY_ERROR_PKT_TOO_BIG,
393  pkts_too_big);
394  return from_frame->n_vectors;
395 }
396 
398  .function = dhcp_proxy_to_server_input,
399  .name = "dhcp-proxy-to-server",
400  /* Takes a vector of packets. */
401  .vector_size = sizeof (u32),
402 
403  .n_errors = DHCP_PROXY_N_ERROR,
404  .error_strings = dhcp_proxy_error_strings,
405 
406  .n_next_nodes = DHCP_PROXY_TO_SERVER_INPUT_N_NEXT,
407  .next_nodes = {
408 #define _(s,n) [DHCP_PROXY_TO_SERVER_INPUT_NEXT_##s] = n,
410 #undef _
411  },
412 
413  .format_buffer = format_dhcp_proxy_header_with_length,
414  .format_trace = format_dhcp_proxy_trace,
415 #if 0
416  .unformat_buffer = unformat_dhcp_proxy_header,
417 #endif
418 };
419 
420 static uword
422  vlib_node_runtime_t * node,
423  vlib_frame_t * from_frame)
424 {
425  u32 n_left_from, * from;
428  vnet_main_t * vnm = vnet_get_main();
429  ip4_main_t * im = &ip4_main;
430 
431  from = vlib_frame_vector_args (from_frame);
432  n_left_from = from_frame->n_vectors;
433 
434  while (n_left_from > 0)
435  {
436  u32 bi0;
437  vlib_buffer_t * b0;
438  udp_header_t * u0;
439  dhcp_header_t * h0;
440  ip4_header_t * ip0 = 0;
441  ip4_address_t * ia0 = 0;
442  u32 old0, new0;
443  ip_csum_t sum0;
445  ethernet_header_t *mac0;
446  vnet_hw_interface_t *hi0;
447  vlib_frame_t *f0;
448  u32 * to_next0;
449  u32 sw_if_index = ~0;
450  vnet_sw_interface_t *si0;
451  u32 error0 = (u32)~0;
452  vnet_sw_interface_t *swif;
453  u32 server_index;
454  u32 fib_index;
455  dhcp_server_t * server;
456  u32 original_sw_if_index = (u32) ~0;
457 
458  bi0 = from[0];
459  from += 1;
460  n_left_from -= 1;
461 
462  b0 = vlib_get_buffer (vm, bi0);
463  h0 = vlib_buffer_get_current (b0);
464 
465  /*
466  * udp_local hands us the DHCP header, need udp hdr,
467  * ip hdr to relay to client
468  */
469  vlib_buffer_advance (b0, -(sizeof(*u0)));
470  u0 = vlib_buffer_get_current (b0);
471 
472  vlib_buffer_advance (b0, -(sizeof(*ip0)));
473  ip0 = vlib_buffer_get_current (b0);
474 
475  /* Consumed by dhcp client code? */
476  if (dhcp_client_for_us (bi0, b0, ip0, u0, h0))
477  continue;
478 
479  if (1 /* dpm->insert_option_82 */)
480  {
481  dhcp_option_t *o = (dhcp_option_t *) h0->options;
483 
484  /* Parse through TLVs looking for option 82.
485  The circuit-ID is the FIB number we need
486  to track down the client-facing interface */
487 
488  while (o->option != 0xFF /* end of options */ &&
489  (u8 *) o < (b0->data + b0->current_data + b0->current_length))
490  {
491  if (o->option == 82)
492  {
493  u32 vss_exist = 0;
494  u32 vss_ctrl = 0;
495  sub = (dhcp_option_t *) &o->data[0];
496  while (sub->option != 0xFF /* end of options */ &&
497  (u8 *) sub < (u8 *)(o + o->length)) {
498  /* If this is one of ours, it will have
499  total length 12, circuit-id suboption type,
500  and the sw_if_index */
501  if (sub->option == 1 && sub->length == 4)
502  {
503  sw_if_index = (o->data[2] << 24)
504  | (o->data[3] << 16)
505  | (o->data[4] << 8)
506  | (o->data[5]);
507  } else if (sub->option == 151 &&
508  sub->length == 7 &&
509  sub->data[0] == 1)
510  vss_exist = 1;
511  else if (sub->option == 152 && sub->length == 0)
512  vss_ctrl = 1;
513  sub = (dhcp_option_t *)
514  (((uword) sub) + (sub->length + 2));
515  }
516  if (vss_ctrl && vss_exist)
518  (vm, dhcp_proxy_to_client_node.index,
519  DHCP_PROXY_ERROR_OPTION_82_VSS_NOT_PROCESSED, 1);
520 
521  }
522  o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
523  }
524  }
525 
526  if (sw_if_index == (u32)~0)
527  {
528  error0 = DHCP_PROXY_ERROR_NO_OPTION_82;
529 
530  drop_packet:
532  error0, 1);
534  to_next0 = vlib_frame_vector_args (f0);
535  to_next0[0] = bi0;
536  f0->n_vectors = 1;
538  goto do_trace;
539  }
540 
541 
542  if (sw_if_index >= vec_len (im->fib_index_by_sw_if_index))
543  {
544  error0 = DHCP_PROXY_ERROR_BAD_OPTION_82;
545  goto drop_packet;
546  }
547 
548  fib_index = im->fib_index_by_sw_if_index [sw_if_index];
549 
550  if (fib_index < vec_len(dpm->dhcp_server_index_by_rx_fib_index))
551  server_index = dpm->dhcp_server_index_by_rx_fib_index[fib_index];
552  else
553  server_index = 0;
554 
556  server_index)))
557  {
558  error0 = DHCP_PROXY_ERROR_BAD_OPTION_82;
559  goto drop_packet;
560  }
561 
562  server = pool_elt_at_index (dpm->dhcp_servers, server_index);
563  if (server->valid == 0)
564  {
565  error0 = DHCP_PROXY_ERROR_NO_SERVER;
566  goto drop_packet;
567  }
568 
569  if (ip0->src_address.as_u32 != server->dhcp_server.as_u32)
570  {
571  error0 = DHCP_PROXY_ERROR_BAD_SVR_FIB_OR_ADDRESS;
572  goto drop_packet;
573  }
574 
575  vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index;
576 
577  swif = vnet_get_sw_interface (vnm, sw_if_index);
578  original_sw_if_index = sw_if_index;
580  sw_if_index = swif->unnumbered_sw_if_index;
581 
582  ia0 = ip4_interface_first_address (&ip4_main, sw_if_index, 0);
583  if (ia0 == 0)
584  {
585  error0 = DHCP_PROXY_ERROR_NO_INTERFACE_ADDRESS;
586  goto drop_packet;
587  }
588 
589  u0->checksum = 0;
590  u0->dst_port = clib_net_to_host_u16 (UDP_DST_PORT_dhcp_to_client);
591  sum0 = ip0->checksum;
592  old0 = ip0->dst_address.as_u32;
593  new0 = 0xFFFFFFFF;
594  ip0->dst_address.as_u32 = new0;
595  sum0 = ip_csum_update (sum0, old0, new0,
596  ip4_header_t /* structure */,
597  dst_address /* offset of changed member */);
598  ip0->checksum = ip_csum_fold (sum0);
599 
600  sum0 = ip0->checksum;
601  old0 = ip0->src_address.as_u32;
602  new0 = ia0->as_u32;
603  ip0->src_address.as_u32 = new0;
604  sum0 = ip_csum_update (sum0, old0, new0,
605  ip4_header_t /* structure */,
606  src_address /* offset of changed member */);
607  ip0->checksum = ip_csum_fold (sum0);
608 
609  vlib_buffer_advance (b0, -(sizeof(ethernet_header_t)));
610  si0 = vnet_get_sw_interface (vnm, original_sw_if_index);
611  if (si0->type == VNET_SW_INTERFACE_TYPE_SUB)
612  vlib_buffer_advance (b0, -4 /* space for VLAN tag */);
613 
614  mac0 = vlib_buffer_get_current (b0);
615 
616  hi0 = vnet_get_sup_hw_interface (vnm, original_sw_if_index);
617  ei0 = pool_elt_at_index (em->interfaces, hi0->hw_instance);
618  clib_memcpy (mac0->src_address, ei0->address, sizeof (ei0->address));
619  memset (mac0->dst_address, 0xff, sizeof (mac0->dst_address));
620  mac0->type = (si0->type == VNET_SW_INTERFACE_TYPE_SUB) ?
621  clib_net_to_host_u16(0x8100) : clib_net_to_host_u16 (0x0800);
622 
623  if (si0->type == VNET_SW_INTERFACE_TYPE_SUB)
624  {
625  u32 * vlan_tag = (u32 *)(mac0+1);
626  u32 tmp;
627  tmp = (si0->sub.id << 16) | 0x0800;
628  *vlan_tag = clib_host_to_net_u32 (tmp);
629  }
630 
631  /* $$$ This needs to be rewritten, for sure */
633  to_next0 = vlib_frame_vector_args (f0);
634  to_next0[0] = bi0;
635  f0->n_vectors = 1;
637 
638  do_trace:
640  {
641  dhcp_proxy_trace_t *tr = vlib_add_trace (vm, node,
642  b0, sizeof (*tr));
643  tr->which = 1; /* to client */
644  tr->trace_ip4_address.as_u32 = ia0 ? ia0->as_u32 : 0;
645  tr->error = error0;
646  tr->original_sw_if_index = original_sw_if_index;
647  tr->sw_if_index = sw_if_index;
648  }
649  }
650  return from_frame->n_vectors;
651 }
652 
654  .function = dhcp_proxy_to_client_input,
655  .name = "dhcp-proxy-to-client",
656  /* Takes a vector of packets. */
657  .vector_size = sizeof (u32),
658 
659  .n_errors = DHCP_PROXY_N_ERROR,
660  .error_strings = dhcp_proxy_error_strings,
661  .format_buffer = format_dhcp_proxy_header_with_length,
662  .format_trace = format_dhcp_proxy_trace,
663 #if 0
664  .unformat_buffer = unformat_dhcp_proxy_header,
665 #endif
666 };
667 
669 {
671  vlib_node_t * error_drop_node;
672  dhcp_server_t * server;
673 
674  dm->vlib_main = vm;
675  dm->vnet_main = vnet_get_main();
676  error_drop_node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
677  dm->error_drop_node_index = error_drop_node->index;
678 
679  dm->opt82vss_index_by_vrf_id = hash_create (0, sizeof (uword));
680 
681  udp_register_dst_port (vm, UDP_DST_PORT_dhcp_to_client,
682  dhcp_proxy_to_client_node.index, 1 /* is_ip4 */);
683 
684  udp_register_dst_port (vm, UDP_DST_PORT_dhcp_to_server,
685  dhcp_proxy_to_server_node.index, 1 /* is_ip4 */);
686 
687  /* Create the default server, don't mark it valid */
688  pool_get (dm->dhcp_servers, server);
689  memset (server, 0, sizeof (*server));
690 
691  return 0;
692 }
693 
695 
697  u32 rx_fib_id,
698  u32 server_fib_id,
699  int insert_option_82, int is_del)
700 {
702  ip4_main_t * im = &ip4_main;
703  dhcp_server_t * server = 0;
704  ip4_fib_t *rx_fib, *server_fib;
705  u32 server_index = 0;
706  u32 rx_fib_index = 0;
707 
708  if (addr->as_u32 == 0)
709  return VNET_API_ERROR_INVALID_DST_ADDRESS;
710 
711  if (src_address->as_u32 == 0)
712  return VNET_API_ERROR_INVALID_SRC_ADDRESS;
713 
715  (&ip4_main, rx_fib_id, IP4_ROUTE_FLAG_TABLE_ID);
716 
717  if (rx_fib == 0)
718  return VNET_API_ERROR_NO_SUCH_INNER_FIB;
719 
721  (&ip4_main, server_fib_id, IP4_ROUTE_FLAG_TABLE_ID);
722 
723  if (server_fib == 0)
724  return VNET_API_ERROR_NO_SUCH_FIB;
725 
726  if (rx_fib_id == 0)
727  {
728  server = pool_elt_at_index (dpm->dhcp_servers, 0);
729 
730  if (is_del)
731  {
732  memset (server, 0, sizeof (*server));
733  return 0;
734  }
735  goto initialize_it;
736  }
737 
738  rx_fib_index = rx_fib - im->fibs;
739 
740  if (is_del)
741  {
742  if (rx_fib_index >= vec_len(dpm->dhcp_server_index_by_rx_fib_index))
743  return VNET_API_ERROR_NO_SUCH_ENTRY;
744 
745  server_index = dpm->dhcp_server_index_by_rx_fib_index[rx_fib_index];
746  ASSERT(server_index > 0);
747 
748  /* Use the default server again. */
749  dpm->dhcp_server_index_by_rx_fib_index[rx_fib_index] = 0;
750  server = pool_elt_at_index (dpm->dhcp_servers, server_index);
751  memset (server, 0, sizeof (*server));
752  pool_put (dpm->dhcp_servers, server);
753  return 0;
754  }
755 
756  if (rx_fib_index < vec_len(dpm->dhcp_server_index_by_rx_fib_index))
757  {
758  server_index = dpm->dhcp_server_index_by_rx_fib_index[rx_fib_index];
759  if (server_index != 0)
760  {
761  server = pool_elt_at_index (dpm->dhcp_servers, server_index);
762  goto initialize_it;
763  }
764  }
765 
766  pool_get (dpm->dhcp_servers, server);
767 
768  initialize_it:
769 
770  server->dhcp_server.as_u32 = addr->as_u32;
771  server->server_fib_index = server_fib - im->fibs;
772  server->dhcp_src_address.as_u32 = src_address->as_u32;
773  server->insert_option_82 = insert_option_82;
774  server->valid = 1;
775  if (rx_fib_index)
776  {
777  vec_validate (dpm->dhcp_server_index_by_rx_fib_index, rx_fib_index);
778  dpm->dhcp_server_index_by_rx_fib_index[rx_fib_index] =
779  server - dpm->dhcp_servers;
780  }
781 
782  return 0;
783 }
784 
785 /* Old API, manipulates the default server (only) */
787  u32 fib_id, int insert_option_82, int is_del)
788 {
789  return dhcp_proxy_set_server_2 (addr, src_address, 0 /* rx_fib_id */,
790  fib_id /* server_fib_id */,
791  insert_option_82, is_del);
792 }
793 
794 
795 static clib_error_t *
797  unformat_input_t * input,
798  vlib_cli_command_t * cmd)
799 {
800  ip4_address_t server_addr, src_addr;
801  u32 server_fib_id = 0, rx_fib_id = 0;
802  int is_del = 0;
803  int add_option_82 = 0;
804  int set_src = 0, set_server = 0;
805 
807  {
808  if (unformat (input, "server %U",
809  unformat_ip4_address, &server_addr))
810  set_server = 1;
811  else if (unformat (input, "server-fib-id %d", &server_fib_id))
812  ;
813  else if (unformat (input, "rx-fib-id %d", &rx_fib_id))
814  ;
815  else if (unformat(input, "src-address %U",
816  unformat_ip4_address, &src_addr))
817  set_src = 1;
818  else if (unformat (input, "add-option-82")
819  || unformat (input, "insert-option-82"))
820  add_option_82 = 1;
821  else if (unformat (input, "delete") ||
822  unformat (input, "del"))
823  is_del = 1;
824  else
825  break;
826  }
827 
828  if (is_del || (set_server && set_src))
829  {
830  int rv;
831 
832  rv = dhcp_proxy_set_server_2 (&server_addr, &src_addr, rx_fib_id,
833  server_fib_id, add_option_82, is_del);
834  switch (rv)
835  {
836  case 0:
837  return 0;
838 
839  case VNET_API_ERROR_INVALID_DST_ADDRESS:
840  return clib_error_return (0, "Invalid server address");
841 
842  case VNET_API_ERROR_INVALID_SRC_ADDRESS:
843  return clib_error_return (0, "Invalid src address");
844 
845  case VNET_API_ERROR_NO_SUCH_INNER_FIB:
846  return clib_error_return (0, "No such rx fib id %d", rx_fib_id);
847 
848  case VNET_API_ERROR_NO_SUCH_FIB:
849  return clib_error_return (0, "No such server fib id %d",
850  server_fib_id);
851 
852  case VNET_API_ERROR_NO_SUCH_ENTRY:
853  return clib_error_return
854  (0, "Fib id %d: no per-fib DHCP server configured", rx_fib_id);
855 
856  default:
857  return clib_error_return (0, "BUG: rv %d", rv);
858  }
859  }
860  else
861  return clib_error_return (0, "parse error`%U'",
862  format_unformat_error, input);
863 }
864 
865 VLIB_CLI_COMMAND (dhcp_proxy_set_command, static) = {
866  .path = "set dhcp proxy",
867  .short_help = "set dhcp proxy [del] server <ip-addr> src-address <ip-addr> [add-option-82] [server-fib-id <n>] [rx-fib-id <n>]",
868  .function = dhcp_proxy_set_command_fn,
869 };
870 
871 u8 * format_dhcp_proxy_server (u8 * s, va_list * args)
872 {
873  dhcp_proxy_main_t * dm = va_arg (*args, dhcp_proxy_main_t *);
874  dhcp_server_t * server = va_arg (*args, dhcp_server_t *);
875  u32 rx_fib_index = va_arg (*args, u32);
876  ip4_fib_t * rx_fib, * server_fib;
877  u32 server_fib_id = ~0, rx_fib_id = ~0;
878 
879  if (dm == 0)
880  {
881  s = format (s, "%=16s%=16s%=14s%=14s%=20s", "Server", "Src Address",
882  "Server FIB", "RX FIB", "Insert Option 82");
883  return s;
884  }
885 
888 
889  if (server_fib)
890  server_fib_id = server_fib->table_id;
891 
893  (&ip4_main, rx_fib_index, IP4_ROUTE_FLAG_FIB_INDEX);
894 
895  if (rx_fib)
896  rx_fib_id = rx_fib->table_id;
897 
898  s = format (s, "%=16U%=16U%=14u%=14u%=20s",
901  server_fib_id, rx_fib_id,
902  server->insert_option_82 ? "yes" : "no");
903  return s;
904 }
905 
906 static clib_error_t *
908  unformat_input_t * input,
909  vlib_cli_command_t * cmd)
910 {
912  ip4_main_t * im = &ip4_main;
913  dhcp_server_t * server;
914  u32 server_index;
915  int i;
916 
917  vlib_cli_output (vm, "%U", format_dhcp_proxy_server, 0 /* header line */,
918  0, 0);
919 
920  for (i = 0; i < vec_len (im->fibs); i++)
921  {
923  server_index = dpm->dhcp_server_index_by_rx_fib_index[i];
924  else
925  server_index = 0;
926  server = pool_elt_at_index (dpm->dhcp_servers, server_index);
927  if (server->valid)
928  vlib_cli_output (vm, "%U", format_dhcp_proxy_server, dpm,
929  server, i);
930  }
931 
932  return 0;
933 }
934 
935 VLIB_CLI_COMMAND (dhcp_proxy_show_command, static) = {
936  .path = "show dhcp proxy",
937  .short_help = "Display dhcp proxy server info",
938  .function = dhcp_proxy_show_command_fn,
939 };
940 
941 
943  u32 oui,
944  u32 fib_id,
945  int is_del)
946 {
948  uword *p;
949  vss_info *a;
950  u32 old_oui=0, old_fib_id=0;
951 
952  p = hash_get (dm->opt82vss_index_by_vrf_id, vrf_id);
953 
954  if (p)
955  {
956  a = pool_elt_at_index (dm->opt82vss, p[0]);
957  if (!a)
958  return VNET_API_ERROR_NO_SUCH_FIB;
959  old_oui = a->vpn_id.oui;
960  old_fib_id = a->vpn_id.fib_id;
961 
962  if (is_del)
963  {
964  if (old_oui == oui &&
965  old_fib_id == fib_id)
966  {
967  pool_put(dm->opt82vss, a);
968  hash_unset (dm->opt82vss_index_by_vrf_id, vrf_id);
969  return 0;
970  }
971  else
972  return VNET_API_ERROR_NO_SUCH_ENTRY;
973  }
974  pool_put(dm->opt82vss, a);
975  hash_unset (dm->opt82vss_index_by_vrf_id, vrf_id);
976  } else if (is_del)
977  return VNET_API_ERROR_NO_SUCH_ENTRY;
978  pool_get (dm->opt82vss, a);
979  memset (a, ~0, sizeof (a[0]));
980  a->vpn_id.oui = oui;
981  a->vpn_id.fib_id = fib_id;
982  hash_set (dm->opt82vss_index_by_vrf_id, vrf_id, a - dm->opt82vss);
983 
984  return 0;
985 }
986 
987 static clib_error_t *
989  unformat_input_t * input,
990  vlib_cli_command_t * cmd)
991 {
992  int is_del = 0, got_new_vpn_id=0;
993  u32 oui=0, fib_id=0, tbl_id=~0;
994 
995 
997  {
998 
999  if (unformat(input, "delete") || unformat(input, "del"))
1000  is_del = 1;
1001  else if (unformat (input, "oui %d", &oui))
1002  got_new_vpn_id = 1;
1003  else if (unformat (input, "vpn-id %d", &fib_id))
1004  got_new_vpn_id = 1;
1005  else if (unformat (input, "table %d", &tbl_id))
1006  got_new_vpn_id = 1;
1007  else
1008  break;
1009  }
1010  if (tbl_id == ~0)
1011  return clib_error_return (0, "no table ID specified.");
1012 
1013  if (is_del || got_new_vpn_id)
1014  {
1015  int rv;
1016  rv = dhcp_proxy_set_option82_vss(tbl_id, oui, fib_id, is_del);
1017  switch (rv)
1018  {
1019  case 0:
1020  return 0;
1021 
1022  case VNET_API_ERROR_NO_SUCH_FIB:
1023  return clib_error_return (0, "option 82 vss(oui:%d, vpn-id:%d) not found in table %d",
1024  oui, fib_id, tbl_id);
1025 
1026  case VNET_API_ERROR_NO_SUCH_ENTRY:
1027  return clib_error_return (0, "option 82 vss for table %d not found in in pool.",
1028  tbl_id);
1029  default:
1030  return clib_error_return (0, "BUG: rv %d", rv);
1031  }
1032  }
1033  else
1034  return clib_error_return (0, "parse error`%U'",
1035  format_unformat_error, input);
1036 }
1037 
1038 VLIB_CLI_COMMAND (dhcp_proxy_vss_command,static) = {
1039  .path = "set dhcp option-82 vss",
1040  .short_help = "set dhcp option-82 vss [del] table <table id> oui <oui> vpn-id <vpn-id>",
1041  .function = dhcp_option_82_vss_fn,
1042 };
1043 
1044 
1045 static clib_error_t *
1047  unformat_input_t * input,
1048  vlib_cli_command_t * cmd)
1049 
1050 {
1052  vss_info *v;
1053  u32 oui;
1054  u32 fib_id;
1055  u32 tbl_id;
1056  uword index;
1057 
1058  vlib_cli_output (vm, "%=9s%=11s%=12s","Table", "OUI", "VPN-ID");
1059  hash_foreach (tbl_id, index, dm->opt82vss_index_by_vrf_id,
1060  ({
1061  v = pool_elt_at_index (dm->opt82vss, index);
1062  oui = v->vpn_id.oui;
1063  fib_id = v->vpn_id.fib_id;
1064  vlib_cli_output (vm, "%=9d 0x%08x%=12d",
1065  tbl_id, oui, fib_id);
1066  }));
1067 
1068  return 0;
1069 }
1070 
1071 VLIB_CLI_COMMAND (dhcp_proxy_vss_show_command, static) = {
1072  .path = "show dhcp vss",
1073  .short_help = "show dhcp VSS",
1074  .function = dhcp_vss_show_command_fn,
1075 };
1076 
1077 static clib_error_t *
1079  unformat_input_t * input,
1080  vlib_cli_command_t * cmd)
1081 
1082 {
1084  vnet_main_t *vnm = vnet_get_main();
1085  u32 sw_if_index0=0, sw_if_index;
1086  ip4_address_t *ia0;
1087  vnet_sw_interface_t *swif;
1088 
1089  while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
1090  {
1091 
1092  if (unformat(input, "%U",
1093  unformat_vnet_sw_interface, dm->vnet_main, &sw_if_index0))
1094  {
1095  swif = vnet_get_sw_interface (vnm, sw_if_index0);
1096  sw_if_index = (swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED) ?
1097  swif->unnumbered_sw_if_index : sw_if_index0;
1098  ia0 = ip4_interface_first_address(&ip4_main, sw_if_index, 0);
1099  if (ia0)
1100  {
1101  vlib_cli_output (vm, "%=20s%=20s", "interface",
1102  "source IP address");
1103 
1104  vlib_cli_output (vm, "%=20U%=20U",
1106  dm->vnet_main, sw_if_index0,
1107  format_ip4_address, ia0);
1108  }
1109  else
1110  vlib_cli_output (vm, "%=34s %=20U",
1111  "No IPv4 address configured on",
1113  dm->vnet_main, sw_if_index);
1114  }
1115  else
1116  break;
1117  }
1118 
1119  return 0;
1120 }
1121 
1122 VLIB_CLI_COMMAND (dhcp_proxy_address_show_command,static) = {
1123  .path = "show dhcp option-82-address interface",
1124  .short_help = "show dhcp option-82-address interface <interface>",
1126 };
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:396
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:457
#define VNET_SW_INTERFACE_FLAG_UNNUMBERED
Definition: interface.h:422
ip4_fib_t * find_ip4_fib_by_table_index_or_id(ip4_main_t *im, u32 table_index_or_id, u32 flags)
Get or create an IPv4 fib.
Definition: ip4_forward.c:120
u32 insert_option_82
Definition: proxy.h:52
#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
#define hash_unset(h, key)
Definition: hash.h:260
a
Definition: bitmap.h:516
ip4_address_t src_address
Definition: ip4_packet.h:138
static clib_error_t * dhcp_option_82_vss_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: proxy_node.c:988
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
ethernet_main_t * ethernet_get_main(vlib_main_t *vm)
Definition: init.c:96
static clib_error_t * dhcp_proxy_set_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: proxy_node.c:796
u32 free_list_index
Buffer free list that this buffer was allocated from and will be freed to.
Definition: buffer.h:105
vss_id vpn_id
Definition: proxy.h:46
ip4_address_t * ip4_interface_first_address(ip4_main_t *im, u32 sw_if_index, ip_interface_address_t **result_ia)
Definition: arp.c:684
u32 table_id
Definition: ip4.h:59
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
#define NULL
Definition: clib.h:55
u32 index
Definition: node.h:237
u8 src_address[6]
Definition: packet.h:54
u8 * format_dhcp_proxy_header_with_length(u8 *s, va_list *args)
Definition: proxy_node.c:81
add_epi add_epi sub
Definition: vector_sse2.h:289
u32 server_fib_index
Definition: proxy.h:53
struct _vlib_node_registration vlib_node_registration_t
uword ip_csum_t
Definition: ip_packet.h:86
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
u32 * fib_index_by_sw_if_index
Table index indexed by software interface.
Definition: ip4.h:123
unformat_function_t unformat_vnet_sw_interface
u32 error_drop_node_index
Definition: proxy.h:65
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:200
format_function_t format_ip4_address
Definition: format.h:71
format_function_t format_vnet_sw_if_index_name
clib_error_t * dhcp_proxy_init(vlib_main_t *vm)
Definition: proxy_node.c:668
vnet_main_t * vnet_get_main(void)
Definition: misc.c:45
i16 current_data
signed offset in data[], pre_data[] that we are currently processing.
Definition: buffer.h:78
static uword dhcp_proxy_to_client_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: proxy_node.c:421
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:187
ip4_address_t dst_address
Definition: ip4_packet.h:138
u8 dst_address[6]
Definition: packet.h:53
#define VPP_DHCP_OPTION82_SIZE
Definition: proxy_node.c:52
uword * opt82vss_index_by_vrf_id
Definition: proxy.h:70
#define hash_foreach(key_var, value_var, h, body)
Definition: hash.h:407
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
#define foreach_dhcp_proxy_to_server_input_next
Definition: proxy_node.c:28
u32 * dhcp_server_index_by_rx_fib_index
Definition: proxy.h:62
int dhcp_proxy_set_server(ip4_address_t *addr, ip4_address_t *src_address, u32 fib_id, int insert_option_82, int is_del)
Definition: proxy_node.c:786
unformat_function_t unformat_ip4_address
Definition: format.h:68
#define hash_get(h, key)
Definition: hash.h:248
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:369
vnet_sub_interface_t sub
Definition: interface.h:447
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:82
vnet_main_t * vnet_main
Definition: proxy.h:75
ip4_address_t dhcp_src_address
Definition: proxy.h:51
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:214
#define PREDICT_FALSE(x)
Definition: clib.h:97
vlib_main_t * vlib_main
Definition: proxy.h:74
static uword dhcp_proxy_to_server_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: proxy_node.c:97
void vlib_put_frame_to_node(vlib_main_t *vm, u32 to_node_index, vlib_frame_t *f)
Definition: main.c:194
#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:130
#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:348
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:575
static clib_error_t * dhcp_option_82_address_show_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: proxy_node.c:1078
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1111
dhcp_server_t * dhcp_servers
Definition: proxy.h:59
u16 n_vectors
Definition: node.h:344
int dhcp_proxy_set_option82_vss(u32 vrf_id, u32 oui, u32 fib_id, int is_del)
Definition: proxy_node.c:942
u8 * format_dhcp_proxy_server(u8 *s, va_list *args)
Definition: proxy_node.c:871
Definition: ip4.h:48
u32 valid
Definition: proxy.h:54
#define clib_memcpy(a, b, c)
Definition: string.h:63
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:200
u8 options[0]
Definition: packet.h:39
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:211
Definition: proxy.h:44
u32 fib_id
Definition: proxy.h:41
static char * dhcp_proxy_error_strings[]
Definition: proxy_node.c:22
vlib_node_registration_t dhcp_proxy_to_server_node
(constructor) VLIB_REGISTER_NODE (dhcp_proxy_to_server_node)
Definition: proxy_node.c:56
#define hash_create(elts, value_bytes)
Definition: hash.h:647
u16 cached_next_index
Definition: node.h:462
ip4_address_t dhcp_server
Definition: proxy.h:50
#define ASSERT(truth)
unsigned int u32
Definition: types.h:88
ip4_fib_t * fibs
Vector of FIBs.
Definition: ip4.h:118
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
#define vnet_buffer(b)
Definition: buffer.h:335
u8 * format_dhcp_proxy_trace(u8 *s, va_list *args)
Definition: proxy_node.c:59
ip4_address_t gateway_ip_address
Definition: packet.h:34
u8 * format(u8 *s, char *fmt,...)
Definition: format.c:418
IPv4 main type.
Definition: ip4.h:114
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:93
static clib_error_t * dhcp_vss_show_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: proxy_node.c:1046
ip4_address_t trace_ip4_address
Definition: proxy_node.c:43
u8 data[0]
Definition: packet.h:46
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
dhcp_proxy_main_t dhcp_proxy_main
Definition: proxy.h:78
vlib_node_t * vlib_get_node_by_name(vlib_main_t *vm, u8 *name)
Definition: node.c:45
vss_info * opt82vss
Definition: proxy.h:67
Definition: defs.h:47
unsigned short u16
Definition: types.h:57
VLIB_CLI_COMMAND(set_interface_ip_source_and_port_range_check_command, static)
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
unsigned char u8
Definition: types.h:56
int dhcp_proxy_set_server_2(ip4_address_t *addr, ip4_address_t *src_address, u32 rx_fib_id, u32 server_fib_id, int insert_option_82, int is_del)
Definition: proxy_node.c:696
#define IP4_ROUTE_FLAG_FIB_INDEX
Definition: ip4.h:311
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:251
#define ip_csum_update(sum, old, new, type, field)
Definition: ip_packet.h:133
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
vnet_sw_interface_type_t type
Definition: interface.h:410
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:1578
#define IP4_ROUTE_FLAG_TABLE_ID
Definition: ip4.h:310
u8 data[0]
Packet data.
Definition: buffer.h:151
static clib_error_t * dhcp_proxy_show_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: proxy_node.c:907
u32 oui
Definition: proxy.h:40
vhost_vring_addr_t addr
Definition: vhost-user.h:82
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:461
#define clib_error_return(e, args...)
Definition: error.h:111
int dhcp_client_for_us(u32 bi, vlib_buffer_t *b, ip4_header_t *ip, udp_header_t *udp, dhcp_header_t *dhcp)
Definition: client.c:80
struct _unformat_input_t unformat_input_t
static vlib_buffer_free_list_t * vlib_buffer_get_free_list(vlib_main_t *vm, u32 free_list_index)
Definition: buffer_funcs.h:337
vlib_frame_t * vlib_get_frame_to_node(vlib_main_t *vm, u32 to_node_index)
Definition: main.c:185
ethernet_interface_t * interfaces
Definition: ethernet.h:216
u32 flags
buffer flags: VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:85
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:69
dhcp_proxy_to_server_input_next_t
Definition: proxy_node.c:33
static u16 ip_csum_fold(ip_csum_t c)
Definition: ip_packet.h:138
vlib_node_registration_t dhcp_proxy_to_client_node
(constructor) VLIB_REGISTER_NODE (dhcp_proxy_to_client_node)
Definition: proxy_node.c:57
Definition: defs.h:46