dhcp_api.c revision 02bfd641
1/*
2 *------------------------------------------------------------------
3 * dhcp_api.c - dhcp api
4 *
5 * Copyright (c) 2016 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
18 */
19
20#include <vnet/vnet.h>
21#include <vlibmemory/api.h>
22
23#include <vnet/interface.h>
24#include <vnet/api_errno.h>
25#include <dhcp/dhcp_proxy.h>
26#include <dhcp/client.h>
27#include <dhcp/dhcp6_pd_client_dp.h>
28#include <dhcp/dhcp6_ia_na_client_dp.h>
29#include <dhcp/dhcp6_client_common_dp.h>
30#include <vnet/fib/fib_table.h>
31#include <vnet/ip/ip_types_api.h>
32
33/* define message IDs */
34#include <vnet/format_fns.h>
35#include <dhcp/dhcp.api_enum.h>
36#include <dhcp/dhcp.api_types.h>
37
38/**
39 * Base message ID fot the plugin
40 */
41static u32 dhcp_base_msg_id;
42#define REPLY_MSG_ID_BASE dhcp_base_msg_id
43
44#include <vlibapi/api_helper_macros.h>
45
46#define  DHCP_PLUGIN_VERSION_MAJOR 1
47#define  DHCP_PLUGIN_VERSION_MINOR 0
48
49static void
50vl_api_dhcp_plugin_get_version_t_handler (vl_api_dhcp_plugin_get_version_t *
51					  mp)
52{
53  vl_api_dhcp_plugin_get_version_reply_t *rmp;
54  int msg_size = sizeof (*rmp);
55  vl_api_registration_t *reg;
56
57  reg = vl_api_client_index_to_registration (mp->client_index);
58  if (!reg)
59    return;
60
61  rmp = vl_msg_api_alloc (msg_size);
62  clib_memset (rmp, 0, msg_size);
63  rmp->_vl_msg_id =
64    ntohs (VL_API_DHCP_PLUGIN_GET_VERSION_REPLY + REPLY_MSG_ID_BASE);
65  rmp->context = mp->context;
66  rmp->major = htonl (DHCP_PLUGIN_VERSION_MAJOR);
67  rmp->minor = htonl (DHCP_PLUGIN_VERSION_MINOR);
68
69  vl_api_send_msg (reg, (u8 *) rmp);
70}
71
72static void
73vl_api_dhcp_plugin_control_ping_t_handler (vl_api_dhcp_plugin_control_ping_t *
74					   mp)
75{
76  vl_api_dhcp_plugin_control_ping_reply_t *rmp;
77  int rv = 0;
78
79  /* *INDENT-OFF* */
80  REPLY_MACRO2 (VL_API_DHCP_PLUGIN_CONTROL_PING_REPLY,
81  ({
82    rmp->vpe_pid = ntohl (getpid ());
83  }));
84  /* *INDENT-ON* */
85}
86
87static void
88vl_api_dhcp6_duid_ll_set_t_handler (vl_api_dhcp6_duid_ll_set_t * mp)
89{
90  vl_api_dhcp6_duid_ll_set_reply_t *rmp;
91  dhcpv6_duid_ll_string_t *duid;
92  int rv = 0;
93
94  duid = (dhcpv6_duid_ll_string_t *) mp->duid_ll;
95  if (duid->duid_type != htonl (DHCPV6_DUID_LL))
96    {
97      rv = VNET_API_ERROR_INVALID_VALUE;
98      goto reply;
99    }
100  clib_memcpy (&client_duid, &duid, sizeof (client_duid));
101
102reply:
103  REPLY_MACRO (VL_API_DHCP6_DUID_LL_SET_REPLY);
104}
105
106static void
107vl_api_dhcp_proxy_set_vss_t_handler (vl_api_dhcp_proxy_set_vss_t * mp)
108{
109  vl_api_dhcp_proxy_set_vss_reply_t *rmp;
110  u8 *vpn_ascii_id;
111  int rv;
112
113  mp->vpn_ascii_id[sizeof (mp->vpn_ascii_id) - 1] = 0;
114  vpn_ascii_id = format (0, "%s", mp->vpn_ascii_id);
115  rv =
116    dhcp_proxy_set_vss ((mp->is_ipv6 ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4),
117			ntohl (mp->tbl_id), ntohl (mp->vss_type),
118			vpn_ascii_id, ntohl (mp->oui), ntohl (mp->vpn_index),
119			mp->is_add == 0);
120
121  REPLY_MACRO (VL_API_DHCP_PROXY_SET_VSS_REPLY);
122}
123
124
125static void vl_api_dhcp_proxy_config_t_handler
126  (vl_api_dhcp_proxy_config_t * mp)
127{
128  vl_api_dhcp_proxy_set_vss_reply_t *rmp;
129  ip46_address_t src, server;
130  int rv = -1;
131
132  if (mp->dhcp_src_address.af != mp->dhcp_server.af)
133    {
134      rv = VNET_API_ERROR_INVALID_ARGUMENT;
135      goto reply;
136    }
137
138  ip_address_decode (&mp->dhcp_src_address, &src);
139  ip_address_decode (&mp->dhcp_server, &server);
140
141  if (mp->dhcp_src_address.af == ADDRESS_IP4)
142    {
143      rv = dhcp4_proxy_set_server (&server,
144				   &src,
145				   (u32) ntohl (mp->rx_vrf_id),
146				   (u32) ntohl (mp->server_vrf_id),
147				   (int) (mp->is_add == 0));
148    }
149  else
150    {
151      rv = dhcp6_proxy_set_server (&server,
152				   &src,
153				   (u32) ntohl (mp->rx_vrf_id),
154				   (u32) ntohl (mp->server_vrf_id),
155				   (int) (mp->is_add == 0));
156    }
157
158reply:
159  REPLY_MACRO (VL_API_DHCP_PROXY_CONFIG_REPLY);
160}
161
162static void
163vl_api_dhcp_proxy_dump_t_handler (vl_api_dhcp_proxy_dump_t * mp)
164{
165  vl_api_registration_t *reg;
166
167  reg = vl_api_client_index_to_registration (mp->client_index);
168  if (!reg)
169    return;;
170
171  dhcp_proxy_dump ((mp->is_ip6 == 1 ?
172		    FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4), reg, mp->context);
173}
174
175void
176dhcp_send_details (fib_protocol_t proto,
177		   void *opaque, u32 context, dhcp_proxy_t * proxy)
178{
179  vl_api_dhcp_proxy_details_t *mp;
180  vl_api_registration_t *reg = opaque;
181  vl_api_dhcp_server_t *v_server;
182  dhcp_server_t *server;
183  fib_table_t *s_fib;
184  dhcp_vss_t *vss;
185  u32 count;
186  size_t n;
187
188  count = vec_len (proxy->dhcp_servers);
189  n = sizeof (*mp) + (count * sizeof (vl_api_dhcp_server_t));
190  mp = vl_msg_api_alloc (n);
191  if (!mp)
192    return;
193  clib_memset (mp, 0, n);
194  mp->_vl_msg_id = ntohs (VL_API_DHCP_PROXY_DETAILS + REPLY_MSG_ID_BASE);
195  mp->context = context;
196  mp->count = count;
197
198  mp->is_ipv6 = (proto == FIB_PROTOCOL_IP6);
199  mp->rx_vrf_id =
200    htonl (dhcp_proxy_rx_table_get_table_id (proto, proxy->rx_fib_index));
201
202  vss = dhcp_get_vss_info (&dhcp_proxy_main, proxy->rx_fib_index, proto);
203
204  if (vss)
205    {
206      mp->vss_type = ntohl (vss->vss_type);
207      if (vss->vss_type == VSS_TYPE_ASCII)
208	{
209	  u32 id_len = vec_len (vss->vpn_ascii_id);
210	  clib_memcpy (mp->vss_vpn_ascii_id, vss->vpn_ascii_id, id_len);
211	}
212      else if (vss->vss_type == VSS_TYPE_VPN_ID)
213	{
214	  u32 oui = ((u32) vss->vpn_id[0] << 16) + ((u32) vss->vpn_id[1] << 8)
215	    + ((u32) vss->vpn_id[2]);
216	  u32 fib_id = ((u32) vss->vpn_id[3] << 24) +
217	    ((u32) vss->vpn_id[4] << 16) + ((u32) vss->vpn_id[5] << 8) +
218	    ((u32) vss->vpn_id[6]);
219	  mp->vss_oui = htonl (oui);
220	  mp->vss_fib_id = htonl (fib_id);
221	}
222    }
223  else
224    mp->vss_type = VSS_TYPE_INVALID;
225
226  vec_foreach_index (count, proxy->dhcp_servers)
227  {
228    server = &proxy->dhcp_servers[count];
229    v_server = &mp->servers[count];
230
231    s_fib = fib_table_get (server->server_fib_index, proto);
232
233    v_server->server_vrf_id = htonl (s_fib->ft_table_id);
234
235    if (mp->is_ipv6)
236      {
237	memcpy (&v_server->dhcp_server.un, &server->dhcp_server.ip6, 16);
238      }
239    else
240      {
241	/* put the address in the first bytes */
242	memcpy (&v_server->dhcp_server.un, &server->dhcp_server.ip4, 4);
243      }
244  }
245
246  if (mp->is_ipv6)
247    {
248      memcpy (&mp->dhcp_src_address.un, &proxy->dhcp_src_address.ip6, 16);
249    }
250  else
251    {
252      /* put the address in the first bytes */
253      memcpy (&mp->dhcp_src_address.un, &proxy->dhcp_src_address.ip4, 4);
254    }
255  vl_api_send_msg (reg, (u8 *) mp);
256}
257
258static void
259dhcp_client_lease_encode (vl_api_dhcp_lease_t * lease,
260			  const dhcp_client_t * client)
261{
262  size_t len;
263  u8 i;
264
265  lease->is_ipv6 = 0;		// only support IPv6 clients
266  lease->sw_if_index = ntohl (client->sw_if_index);
267  lease->state = ntohl (client->state);
268  len = clib_min (sizeof (lease->hostname) - 1, vec_len (client->hostname));
269  clib_memcpy (&lease->hostname, client->hostname, len);
270  lease->hostname[len] = 0;
271
272  lease->mask_width = client->subnet_mask_width;
273  clib_memcpy (&lease->host_address.un, (u8 *) & client->leased_address,
274	       sizeof (ip4_address_t));
275  clib_memcpy (&lease->router_address.un, (u8 *) & client->router_address,
276	       sizeof (ip4_address_t));
277
278  lease->count = vec_len (client->domain_server_address);
279  for (i = 0; i < lease->count; i++)
280    clib_memcpy (&lease->domain_server[i].address,
281		 (u8 *) & client->domain_server_address[i],
282		 sizeof (ip4_address_t));
283
284  clib_memcpy (&lease->host_mac[0], client->client_hardware_address, 6);
285}
286
287static void
288dhcp_client_data_encode (vl_api_dhcp_client_t * vclient,
289			 const dhcp_client_t * client)
290{
291  size_t len;
292
293  vclient->sw_if_index = ntohl (client->sw_if_index);
294  len = clib_min (sizeof (vclient->hostname) - 1, vec_len (client->hostname));
295  clib_memcpy (&vclient->hostname, client->hostname, len);
296  vclient->hostname[len] = 0;
297
298  len = clib_min (sizeof (vclient->id) - 1,
299		  vec_len (client->client_identifier));
300  clib_memcpy (&vclient->id, client->client_identifier, len);
301  vclient->id[len] = 0;
302
303  if (NULL != client->event_callback)
304    vclient->want_dhcp_event = 1;
305  else
306    vclient->want_dhcp_event = 0;
307  vclient->set_broadcast_flag = client->set_broadcast_flag;
308  vclient->dscp = ip_dscp_encode (client->dscp);
309  vclient->pid = client->pid;
310}
311
312static void
313dhcp_compl_event_callback (u32 client_index, const dhcp_client_t * client)
314{
315  vl_api_registration_t *reg;
316  vl_api_dhcp_compl_event_t *mp;
317
318  reg = vl_api_client_index_to_registration (client_index);
319  if (!reg)
320    return;
321
322  mp = vl_msg_api_alloc (sizeof (*mp));
323  mp->client_index = client_index;
324  mp->pid = client->pid;
325  dhcp_client_lease_encode (&mp->lease, client);
326
327  mp->_vl_msg_id = ntohs (VL_API_DHCP_COMPL_EVENT + REPLY_MSG_ID_BASE);
328
329  vl_api_send_msg (reg, (u8 *) mp);
330}
331
332static void vl_api_dhcp_client_config_t_handler
333  (vl_api_dhcp_client_config_t * mp)
334{
335  vlib_main_t *vm = vlib_get_main ();
336  vl_api_dhcp_client_config_reply_t *rmp;
337  u32 sw_if_index;
338  ip_dscp_t dscp;
339  int rv = 0;
340
341  VALIDATE_SW_IF_INDEX (&(mp->client));
342
343  sw_if_index = ntohl (mp->client.sw_if_index);
344  dscp = ip_dscp_decode (mp->client.dscp);
345
346  rv = dhcp_client_config (mp->is_add,
347			   mp->client_index,
348			   vm,
349			   sw_if_index,
350			   mp->client.hostname,
351			   mp->client.id,
352			   (mp->client.want_dhcp_event ?
353			    dhcp_compl_event_callback :
354			    NULL),
355			   mp->client.set_broadcast_flag,
356			   dscp, mp->client.pid);
357
358  BAD_SW_IF_INDEX_LABEL;
359  REPLY_MACRO (VL_API_DHCP_CLIENT_CONFIG_REPLY);
360}
361
362typedef struct dhcp_client_send_walk_ctx_t_
363{
364  vl_api_registration_t *reg;
365  u32 context;
366} dhcp_client_send_walk_ctx_t;
367
368static int
369send_dhcp_client_entry (const dhcp_client_t * client, void *arg)
370{
371  dhcp_client_send_walk_ctx_t *ctx;
372  vl_api_dhcp_client_details_t *mp;
373
374  ctx = arg;
375
376  mp = vl_msg_api_alloc (sizeof (*mp));
377  clib_memset (mp, 0, sizeof (*mp));
378
379  mp->_vl_msg_id = ntohs (VL_API_DHCP_CLIENT_DETAILS + REPLY_MSG_ID_BASE);
380  mp->context = ctx->context;
381
382  dhcp_client_data_encode (&mp->client, client);
383  dhcp_client_lease_encode (&mp->lease, client);
384
385  vl_api_send_msg (ctx->reg, (u8 *) mp);
386
387  return (1);
388}
389
390static void
391vl_api_dhcp_client_dump_t_handler (vl_api_dhcp_client_dump_t * mp)
392{
393  vl_api_registration_t *reg;
394
395  reg = vl_api_client_index_to_registration (mp->client_index);
396  if (!reg)
397    return;
398
399  dhcp_client_send_walk_ctx_t ctx = {
400    .reg = reg,
401    .context = mp->context,
402  };
403  dhcp_client_walk (send_dhcp_client_entry, &ctx);
404}
405
406static void
407  vl_api_dhcp6_clients_enable_disable_t_handler
408  (vl_api_dhcp6_clients_enable_disable_t * mp)
409{
410  vl_api_dhcp6_clients_enable_disable_reply_t *rmp;
411  int rv = 0;
412
413  dhcp6_clients_enable_disable (mp->enable);
414
415  REPLY_MACRO (VL_API_DHCP6_CLIENTS_ENABLE_DISABLE_REPLY);
416}
417
418void
419  vl_api_want_dhcp6_reply_events_t_handler
420  (vl_api_want_dhcp6_reply_events_t * mp)
421{
422  vpe_api_main_t *am = &vpe_api_main;
423  vl_api_want_dhcp6_reply_events_reply_t *rmp;
424  int rv = 0;
425
426  uword *p =
427    hash_get (am->dhcp6_reply_events_registration_hash, mp->client_index);
428  vpe_client_registration_t *rp;
429  if (p)
430    {
431      if (mp->enable_disable)
432	{
433	  clib_warning ("pid %d: already enabled...", ntohl (mp->pid));
434	  rv = VNET_API_ERROR_INVALID_REGISTRATION;
435	  goto reply;
436	}
437      else
438	{
439	  rp = pool_elt_at_index (am->dhcp6_reply_events_registrations, p[0]);
440	  pool_put (am->dhcp6_reply_events_registrations, rp);
441	  hash_unset (am->dhcp6_reply_events_registration_hash,
442		      mp->client_index);
443	  if (pool_elts (am->dhcp6_reply_events_registrations) == 0)
444	    dhcp6_set_publisher_node (~0, DHCP6_DP_REPORT_MAX);
445	  goto reply;
446	}
447    }
448  if (mp->enable_disable == 0)
449    {
450      clib_warning ("pid %d: already disabled...", ntohl (mp->pid));
451      rv = VNET_API_ERROR_INVALID_REGISTRATION;
452      goto reply;
453    }
454  pool_get (am->dhcp6_reply_events_registrations, rp);
455  rp->client_index = mp->client_index;
456  rp->client_pid = ntohl (mp->pid);
457  hash_set (am->dhcp6_reply_events_registration_hash, rp->client_index,
458	    rp - am->dhcp6_reply_events_registrations);
459  dhcp6_set_publisher_node (dhcp6_reply_process_node.index,
460			    DHCP6_DP_REPLY_REPORT);
461
462reply:
463  REPLY_MACRO (VL_API_WANT_DHCP6_REPLY_EVENTS_REPLY);
464}
465
466void
467  vl_api_want_dhcp6_pd_reply_events_t_handler
468  (vl_api_want_dhcp6_pd_reply_events_t * mp)
469{
470  vpe_api_main_t *am = &vpe_api_main;
471  vl_api_want_dhcp6_pd_reply_events_reply_t *rmp;
472  int rv = 0;
473
474  uword *p =
475    hash_get (am->dhcp6_pd_reply_events_registration_hash, mp->client_index);
476  vpe_client_registration_t *rp;
477  if (p)
478    {
479      if (mp->enable_disable)
480	{
481	  clib_warning ("pid %d: already enabled...", ntohl (mp->pid));
482	  rv = VNET_API_ERROR_INVALID_REGISTRATION;
483	  goto reply;
484	}
485      else
486	{
487	  rp =
488	    pool_elt_at_index (am->dhcp6_pd_reply_events_registrations, p[0]);
489	  pool_put (am->dhcp6_pd_reply_events_registrations, rp);
490	  hash_unset (am->dhcp6_pd_reply_events_registration_hash,
491		      mp->client_index);
492	  if (pool_elts (am->dhcp6_pd_reply_events_registrations) == 0)
493	    dhcp6_pd_set_publisher_node (~0, DHCP6_PD_DP_REPORT_MAX);
494	  goto reply;
495	}
496    }
497  if (mp->enable_disable == 0)
498    {
499      clib_warning ("pid %d: already disabled...", ntohl (mp->pid));
500      rv = VNET_API_ERROR_INVALID_REGISTRATION;
501      goto reply;
502    }
503  pool_get (am->dhcp6_pd_reply_events_registrations, rp);
504  rp->client_index = mp->client_index;
505  rp->client_pid = ntohl (mp->pid);
506  hash_set (am->dhcp6_pd_reply_events_registration_hash, rp->client_index,
507	    rp - am->dhcp6_pd_reply_events_registrations);
508  dhcp6_pd_set_publisher_node (dhcp6_pd_reply_process_node.index,
509			       DHCP6_PD_DP_REPLY_REPORT);
510
511reply:
512  REPLY_MACRO (VL_API_WANT_DHCP6_PD_REPLY_EVENTS_REPLY);
513}
514
515void
516  vl_api_dhcp6_send_client_message_t_handler
517  (vl_api_dhcp6_send_client_message_t * mp)
518{
519  vl_api_dhcp6_send_client_message_reply_t *rmp;
520  dhcp6_send_client_message_params_t params;
521  vlib_main_t *vm = vlib_get_main ();
522  u32 n_addresses;
523  u32 i;
524  int rv = 0;
525
526  VALIDATE_SW_IF_INDEX (mp);
527
528  BAD_SW_IF_INDEX_LABEL;
529  REPLY_MACRO (VL_API_DHCP6_SEND_CLIENT_MESSAGE_REPLY);
530
531  if (rv != 0)
532    return;
533
534  params.sw_if_index = ntohl (mp->sw_if_index);
535  params.server_index = ntohl (mp->server_index);
536  params.irt = ntohl (mp->irt);
537  params.mrt = ntohl (mp->mrt);
538  params.mrc = ntohl (mp->mrc);
539  params.mrd = ntohl (mp->mrd);
540  params.msg_type = ntohl (mp->msg_type);
541  params.T1 = ntohl (mp->T1);
542  params.T2 = ntohl (mp->T2);
543  n_addresses = ntohl (mp->n_addresses);
544  params.addresses = 0;
545  if (n_addresses > 0)
546    vec_validate (params.addresses, n_addresses - 1);
547  for (i = 0; i < n_addresses; i++)
548    {
549      vl_api_dhcp6_address_info_t *ai = &mp->addresses[i];
550      dhcp6_send_client_message_params_address_t *addr = &params.addresses[i];
551      addr->preferred_lt = ntohl (ai->preferred_time);
552      addr->valid_lt = ntohl (ai->valid_time);
553      ip6_address_decode (ai->address, &addr->address);
554    }
555
556  dhcp6_send_client_message (vm, ntohl (mp->sw_if_index), mp->stop, &params);
557}
558
559void
560  vl_api_dhcp6_pd_send_client_message_t_handler
561  (vl_api_dhcp6_pd_send_client_message_t * mp)
562{
563  vl_api_dhcp6_pd_send_client_message_reply_t *rmp;
564  dhcp6_pd_send_client_message_params_t params;
565  vlib_main_t *vm = vlib_get_main ();
566  u32 n_prefixes;
567  u32 i;
568  int rv = 0;
569
570  VALIDATE_SW_IF_INDEX (mp);
571
572  BAD_SW_IF_INDEX_LABEL;
573  REPLY_MACRO (VL_API_DHCP6_PD_SEND_CLIENT_MESSAGE_REPLY);
574
575  if (rv != 0)
576    return;
577
578  params.sw_if_index = ntohl (mp->sw_if_index);
579  params.server_index = ntohl (mp->server_index);
580  params.irt = ntohl (mp->irt);
581  params.mrt = ntohl (mp->mrt);
582  params.mrc = ntohl (mp->mrc);
583  params.mrd = ntohl (mp->mrd);
584  params.msg_type = ntohl (mp->msg_type);
585  params.T1 = ntohl (mp->T1);
586  params.T2 = ntohl (mp->T2);
587  n_prefixes = ntohl (mp->n_prefixes);
588  params.prefixes = 0;
589  if (n_prefixes > 0)
590    vec_validate (params.prefixes, n_prefixes - 1);
591  for (i = 0; i < n_prefixes; i++)
592    {
593      vl_api_dhcp6_pd_prefix_info_t *pi = &mp->prefixes[i];
594      dhcp6_pd_send_client_message_params_prefix_t *pref =
595	&params.prefixes[i];
596      pref->preferred_lt = ntohl (pi->preferred_time);
597      pref->valid_lt = ntohl (pi->valid_time);
598      ip6_address_decode (pi->prefix.address, &pref->prefix);
599      pref->prefix_length = pi->prefix.len;
600    }
601
602  dhcp6_pd_send_client_message (vm, ntohl (mp->sw_if_index), mp->stop,
603				&params);
604}
605
606static clib_error_t *
607call_dhcp6_reply_event_callbacks (void *data,
608				  _vnet_dhcp6_reply_event_function_list_elt_t
609				  * elt)
610{
611  clib_error_t *error = 0;
612
613  while (elt)
614    {
615      error = elt->fp (data);
616      if (error)
617	return error;
618      elt = elt->next_dhcp6_reply_event_function;
619    }
620
621  return error;
622}
623
624static uword
625dhcp6_reply_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
626		     vlib_frame_t * f)
627{
628  /* These cross the longjmp  boundary (vlib_process_wait_for_event)
629   * and need to be volatile - to prevent them from being optimized into
630   * a register - which could change during suspension */
631
632  while (1)
633    {
634      vlib_process_wait_for_event (vm);
635      uword event_type = DHCP6_DP_REPLY_REPORT;
636      void *event_data = vlib_process_get_event_data (vm, &event_type);
637
638      int i;
639      if (event_type == DHCP6_DP_REPLY_REPORT)
640	{
641	  address_report_t *events = event_data;
642	  for (i = 0; i < vec_len (events); i++)
643	    {
644	      u32 event_size =
645		sizeof (vl_api_dhcp6_reply_event_t) +
646		vec_len (events[i].addresses) *
647		sizeof (vl_api_dhcp6_address_info_t);
648	      vl_api_dhcp6_reply_event_t *event = clib_mem_alloc (event_size);
649	      clib_memset (event, 0, event_size);
650
651	      event->sw_if_index = htonl (events[i].body.sw_if_index);
652	      event->server_index = htonl (events[i].body.server_index);
653	      event->msg_type = events[i].body.msg_type;
654	      event->T1 = htonl (events[i].body.T1);
655	      event->T2 = htonl (events[i].body.T2);
656	      event->inner_status_code =
657		htons (events[i].body.inner_status_code);
658	      event->status_code = htons (events[i].body.status_code);
659	      event->preference = events[i].body.preference;
660
661	      event->n_addresses = htonl (vec_len (events[i].addresses));
662	      vl_api_dhcp6_address_info_t *address =
663		(typeof (address)) event->addresses;
664	      u32 j;
665	      for (j = 0; j < vec_len (events[i].addresses); j++)
666		{
667		  dhcp6_address_info_t *info = &events[i].addresses[j];
668		  ip6_address_encode (&info->address, address->address);
669		  address->valid_time = htonl (info->valid_time);
670		  address->preferred_time = htonl (info->preferred_time);
671		  address++;
672		}
673	      vec_free (events[i].addresses);
674
675	      dhcp6_ia_na_client_public_main_t *dcpm =
676		&dhcp6_ia_na_client_public_main;
677	      call_dhcp6_reply_event_callbacks (event, dcpm->functions);
678
679	      vpe_client_registration_t *reg;
680              /* *INDENT-OFF* */
681              pool_foreach(reg, vpe_api_main.dhcp6_reply_events_registrations,
682              ({
683                vl_api_registration_t *vl_reg;
684                vl_reg =
685                  vl_api_client_index_to_registration (reg->client_index);
686                if (vl_reg && vl_api_can_send_msg (vl_reg))
687                  {
688                    vl_api_dhcp6_reply_event_t *msg =
689                      vl_msg_api_alloc (event_size);
690                    clib_memcpy (msg, event, event_size);
691                    msg->_vl_msg_id = htons (VL_API_DHCP6_REPLY_EVENT + REPLY_MSG_ID_BASE);
692                    msg->client_index = reg->client_index;
693                    msg->pid = reg->client_pid;
694                    vl_api_send_msg (vl_reg, (u8 *) msg);
695                  }
696              }));
697              /* *INDENT-ON* */
698
699	      clib_mem_free (event);
700	    }
701	}
702      vlib_process_put_event_data (vm, event_data);
703    }
704
705  return 0;
706}
707
708/* *INDENT-OFF* */
709VLIB_REGISTER_NODE (dhcp6_reply_process_node) = {
710  .function = dhcp6_reply_process,
711  .type = VLIB_NODE_TYPE_PROCESS,
712  .name = "dhcp6-reply-publisher-process",
713};
714/* *INDENT-ON* */
715
716static clib_error_t *
717call_dhcp6_pd_reply_event_callbacks (void *data,
718				     _vnet_dhcp6_pd_reply_event_function_list_elt_t
719				     * elt)
720{
721  clib_error_t *error = 0;
722
723  while (elt)
724    {
725      error = elt->fp (data);
726      if (error)
727	return error;
728      elt = elt->next_dhcp6_pd_reply_event_function;
729    }
730
731  return error;
732}
733
734static uword
735dhcp6_pd_reply_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
736			vlib_frame_t * f)
737{
738  /* These cross the longjmp  boundary (vlib_process_wait_for_event)
739   * and need to be volatile - to prevent them from being optimized into
740   * a register - which could change during suspension */
741
742  while (1)
743    {
744      vlib_process_wait_for_event (vm);
745      uword event_type = DHCP6_PD_DP_REPLY_REPORT;
746      void *event_data = vlib_process_get_event_data (vm, &event_type);
747
748      int i;
749      if (event_type == DHCP6_PD_DP_REPLY_REPORT)
750	{
751	  prefix_report_t *events = event_data;
752	  for (i = 0; i < vec_len (events); i++)
753	    {
754	      u32 event_size =
755		sizeof (vl_api_dhcp6_pd_reply_event_t) +
756		vec_len (events[i].prefixes) *
757		sizeof (vl_api_dhcp6_pd_prefix_info_t);
758	      vl_api_dhcp6_pd_reply_event_t *event =
759		clib_mem_alloc (event_size);
760	      clib_memset (event, 0, event_size);
761
762	      event->sw_if_index = htonl (events[i].body.sw_if_index);
763	      event->server_index = htonl (events[i].body.server_index);
764	      event->msg_type = events[i].body.msg_type;
765	      event->T1 = htonl (events[i].body.T1);
766	      event->T2 = htonl (events[i].body.T2);
767	      event->inner_status_code =
768		htons (events[i].body.inner_status_code);
769	      event->status_code = htons (events[i].body.status_code);
770	      event->preference = events[i].body.preference;
771
772	      event->n_prefixes = htonl (vec_len (events[i].prefixes));
773	      vl_api_dhcp6_pd_prefix_info_t *prefix =
774		(typeof (prefix)) event->prefixes;
775	      u32 j;
776	      for (j = 0; j < vec_len (events[i].prefixes); j++)
777		{
778		  dhcp6_prefix_info_t *info = &events[i].prefixes[j];
779		  ip6_address_encode (&info->prefix, prefix->prefix.address);
780		  prefix->prefix.len = info->prefix_length;
781		  prefix->valid_time = htonl (info->valid_time);
782		  prefix->preferred_time = htonl (info->preferred_time);
783		  prefix++;
784		}
785	      vec_free (events[i].prefixes);
786
787	      dhcp6_pd_client_public_main_t *dpcpm =
788		&dhcp6_pd_client_public_main;
789	      call_dhcp6_pd_reply_event_callbacks (event, dpcpm->functions);
790
791	      vpe_client_registration_t *reg;
792              /* *INDENT-OFF* */
793              pool_foreach(reg, vpe_api_main.dhcp6_pd_reply_events_registrations,
794              ({
795                vl_api_registration_t *vl_reg;
796                vl_reg =
797                  vl_api_client_index_to_registration (reg->client_index);
798                if (vl_reg && vl_api_can_send_msg (vl_reg))
799                  {
800                    vl_api_dhcp6_pd_reply_event_t *msg =
801                      vl_msg_api_alloc (event_size);
802                    clib_memcpy (msg, event, event_size);
803                    msg->_vl_msg_id = htons (VL_API_DHCP6_PD_REPLY_EVENT + REPLY_MSG_ID_BASE);
804                    msg->client_index = reg->client_index;
805                    msg->pid = reg->client_pid;
806                    vl_api_send_msg (vl_reg, (u8 *) msg);
807                  }
808              }));
809              /* *INDENT-ON* */
810
811	      clib_mem_free (event);
812	    }
813	}
814      vlib_process_put_event_data (vm, event_data);
815    }
816
817  return 0;
818}
819
820/* *INDENT-OFF* */
821VLIB_REGISTER_NODE (dhcp6_pd_reply_process_node) = {
822  .function = dhcp6_pd_reply_process,
823  .type = VLIB_NODE_TYPE_PROCESS,
824  .name = "dhcp6-pd-reply-publisher-process",
825};
826/* *INDENT-ON* */
827
828/*
829 * dhcp_api_hookup
830 * Add vpe's API message handlers to the table.
831 * vlib has already mapped shared memory and
832 * added the client registration handlers.
833 * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
834 */
835#include <dhcp/dhcp.api.c>
836
837static clib_error_t *
838dhcp_api_hookup (vlib_main_t * vm)
839{
840  /*
841   * Set up the (msg_name, crc, message-id) table
842   */
843  dhcp_base_msg_id = setup_message_id_table ();
844
845  dhcp6_pd_set_publisher_node (dhcp6_pd_reply_process_node.index,
846			       DHCP6_PD_DP_REPLY_REPORT);
847  dhcp6_set_publisher_node (dhcp6_reply_process_node.index,
848			    DHCP6_DP_REPLY_REPORT);
849
850  return 0;
851}
852
853VLIB_API_INIT_FUNCTION (dhcp_api_hookup);
854
855#include <vlib/unix/plugin.h>
856#include <vpp/app/version.h>
857
858/* *INDENT-OFF* */
859VLIB_PLUGIN_REGISTER () = {
860    .version = VPP_BUILD_VER,
861    .description = "Dynamic Host Configuration Protocol (DHCP)",
862};
863/* *INDENT-ON* */
864
865/*
866 * fd.io coding-style-patch-verification: ON
867 *
868 * Local Variables:
869 * eval: (c-set-style "gnu")
870 * End:
871 */
872