2 *------------------------------------------------------------------
3 * flow_api.c - flow api
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:
10 * http://www.apache.org/licenses/LICENSE-2.0
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 *------------------------------------------------------------------
20 #include <vnet/vnet.h>
21 #include <vlibmemory/api.h>
22 #include <vnet/ip/ip_types_api.h>
23 #include <vnet/udp/udp_local.h>
25 #include <vnet/interface.h>
26 #include <vnet/api_errno.h>
28 #include <vnet/fib/fib_table.h>
29 #include <vnet/ipfix-export/flow_report.h>
30 #include <vnet/ipfix-export/flow_report_classify.h>
32 #include <vnet/format_fns.h>
33 #include <vnet/ipfix-export/ipfix_export.api_enum.h>
34 #include <vnet/ipfix-export/ipfix_export.api_types.h>
36 #define REPLY_MSG_ID_BASE frm->msg_id_base
37 #include <vlibapi/api_helper_macros.h>
40 vnet_ipfix_exporter_lookup (const ip_address_t *ipfix_collector)
42 flow_report_main_t *frm = &flow_report_main;
43 ipfix_exporter_t *exp;
45 pool_foreach (exp, frm->exporters)
47 if (ip_address_cmp (&exp->ipfix_collector, ipfix_collector) == 0)
55 * For backwards compatibility reasons index 0 in the set of exporters
56 * is alwyas used for the exporter created via the set_ipfix_exporter
59 #define USE_INDEX_0 true
60 #define USE_ANY_INDEX false
63 vl_api_set_ipfix_exporter_t_internal (
64 u32 client_index, vl_api_address_t *mp_collector_address,
65 u16 mp_collector_port, vl_api_address_t *mp_src_address, u32 mp_vrf_id,
66 u32 mp_path_mtu, u32 mp_template_interval, bool mp_udp_checksum,
67 bool use_index_0, bool is_create)
69 vlib_main_t *vm = vlib_get_main ();
70 flow_report_main_t *frm = &flow_report_main;
71 ipfix_exporter_t *exp;
72 vl_api_registration_t *reg;
73 ip_address_t collector, src;
74 u16 collector_port = UDP_DST_PORT_ipfix;
76 u32 template_interval;
82 reg = vl_api_client_index_to_registration (client_index);
84 return VNET_API_ERROR_UNIMPLEMENTED;
89 * In this case we update the existing exporter. There is no delete
92 exp = &frm->exporters[0];
94 /* Collector address must be IPv4 for exp[0] */
95 collector.version = AF_IP4;
96 ip4_address_decode (mp_collector_address->un.ip4, &collector.ip.ip4);
100 ip_address_decode2 (mp_collector_address, &collector);
103 exp = vnet_ipfix_exporter_lookup (&collector);
106 /* Create a new exporter instead of updating an existing one */
107 if (pool_elts (frm->exporters) >= IPFIX_EXPORTERS_MAX)
108 return VNET_API_ERROR_INVALID_VALUE;
109 pool_get (frm->exporters, exp);
111 return VNET_API_ERROR_INVALID_VALUE;
116 /* Delete the exporter */
117 exp = vnet_ipfix_exporter_lookup (&collector);
119 return VNET_API_ERROR_NO_SUCH_ENTRY;
121 pool_put (frm->exporters, exp);
126 collector_port = ntohs (mp_collector_port);
127 if (collector_port == (u16) ~ 0)
128 collector_port = UDP_DST_PORT_ipfix;
129 ip_address_decode2 (mp_src_address, &src);
130 fib_id = ntohl (mp_vrf_id);
132 ip4_main_t *im = &ip4_main;
139 uword *p = hash_get (im->fib_index_by_table_id, fib_id);
141 return VNET_API_ERROR_NO_SUCH_FIB;
145 path_mtu = ntohl (mp_path_mtu);
147 path_mtu = 512; // RFC 7011 section 10.3.3.
148 template_interval = ntohl (mp_template_interval);
149 if (template_interval == ~0)
150 template_interval = 20;
151 udp_checksum = mp_udp_checksum;
154 * If the collector address is set then the src must be too.
155 * Collector address can be set to 0 to disable exporter
157 if (!ip_address_is_zero (&collector) && ip_address_is_zero (&src))
158 return VNET_API_ERROR_INVALID_VALUE;
159 if (collector.version != src.version)
160 return VNET_API_ERROR_INVALID_VALUE;
162 if (path_mtu > 1450 /* vpp does not support fragmentation */ )
163 return VNET_API_ERROR_INVALID_VALUE;
166 return VNET_API_ERROR_INVALID_VALUE;
168 /* Calculate how much header data we need. */
169 if (collector.version == AF_IP4)
170 ip_header_size = sizeof (ip4_header_t);
172 ip_header_size = sizeof (ip6_header_t);
173 exp->all_headers_size = ip_header_size + sizeof (udp_header_t) +
174 sizeof (ipfix_message_header_t) +
175 sizeof (ipfix_set_header_t);
177 /* Reset report streams if we are reconfiguring IP addresses */
178 if (ip_address_cmp (&exp->ipfix_collector, &collector) ||
179 ip_address_cmp (&exp->src_address, &src) ||
180 exp->collector_port != collector_port)
181 vnet_flow_reports_reset (exp);
183 exp->ipfix_collector = collector;
184 exp->collector_port = collector_port;
185 exp->src_address = src;
186 exp->fib_index = fib_index;
187 exp->path_mtu = path_mtu;
188 exp->template_interval = template_interval;
189 exp->udp_checksum = udp_checksum;
191 /* Turn on the flow reporting process */
192 vlib_process_signal_event (vm, flow_report_process_node.index, 1, 0);
198 vl_api_set_ipfix_exporter_t_handler (vl_api_set_ipfix_exporter_t *mp)
200 vl_api_set_ipfix_exporter_reply_t *rmp;
201 flow_report_main_t *frm = &flow_report_main;
202 int rv = vl_api_set_ipfix_exporter_t_internal (
203 mp->client_index, &mp->collector_address, mp->collector_port,
204 &mp->src_address, mp->vrf_id, mp->path_mtu, mp->template_interval,
205 mp->udp_checksum, USE_INDEX_0, 0);
207 REPLY_MACRO (VL_API_SET_IPFIX_EXPORTER_REPLY);
211 vl_api_ipfix_exporter_create_delete_t_handler (
212 vl_api_ipfix_exporter_create_delete_t *mp)
214 vl_api_ipfix_exporter_create_delete_reply_t *rmp;
215 flow_report_main_t *frm = &flow_report_main;
216 int rv = vl_api_set_ipfix_exporter_t_internal (
217 mp->client_index, &mp->collector_address, mp->collector_port,
218 &mp->src_address, mp->vrf_id, mp->path_mtu, mp->template_interval,
219 mp->udp_checksum, USE_ANY_INDEX, mp->is_create);
221 REPLY_MACRO (VL_API_IPFIX_EXPORTER_CREATE_DELETE_REPLY);
225 vl_api_ipfix_exporter_dump_t_handler (vl_api_ipfix_exporter_dump_t * mp)
227 flow_report_main_t *frm = &flow_report_main;
228 ipfix_exporter_t *exp = pool_elt_at_index (flow_report_main.exporters, 0);
229 vl_api_registration_t *reg;
230 vl_api_ipfix_exporter_details_t *rmp;
231 ip4_main_t *im = &ip4_main;
234 reg = vl_api_client_index_to_registration (mp->client_index);
238 rmp = vl_msg_api_alloc (sizeof (*rmp));
239 clib_memset (rmp, 0, sizeof (*rmp));
241 ntohs ((REPLY_MSG_ID_BASE) + VL_API_IPFIX_EXPORTER_DETAILS);
242 rmp->context = mp->context;
244 ip_address_encode2 (&exp->ipfix_collector, &rmp->collector_address);
245 rmp->collector_port = htons (exp->collector_port);
246 ip_address_encode2 (&exp->src_address, &rmp->src_address);
248 if (exp->fib_index == ~0)
251 vrf_id = im->fibs[exp->fib_index].ft_table_id;
252 rmp->vrf_id = htonl (vrf_id);
253 rmp->path_mtu = htonl (exp->path_mtu);
254 rmp->template_interval = htonl (exp->template_interval);
255 rmp->udp_checksum = (exp->udp_checksum != 0);
257 vl_api_send_msg (reg, (u8 *) rmp);
261 ipfix_all_fill_details (vl_api_ipfix_all_exporter_details_t *rmp,
262 ipfix_exporter_t *exp)
264 ip4_main_t *im = &ip4_main;
267 ip_address_encode2 (&exp->ipfix_collector, &rmp->collector_address);
268 rmp->collector_port = htons (exp->collector_port);
269 ip_address_encode2 (&exp->src_address, &rmp->src_address);
271 if (exp->fib_index == ~0)
274 vrf_id = im->fibs[exp->fib_index].ft_table_id;
275 rmp->vrf_id = htonl (vrf_id);
276 rmp->path_mtu = htonl (exp->path_mtu);
277 rmp->template_interval = htonl (exp->template_interval);
278 rmp->udp_checksum = (exp->udp_checksum != 0);
282 ipfix_all_exporter_details (flow_report_main_t *frm, u32 index,
283 vl_api_registration_t *rp, u32 context)
285 ipfix_exporter_t *exp = pool_elt_at_index (frm->exporters, index);
287 vl_api_ipfix_all_exporter_details_t *rmp;
289 REPLY_MACRO_DETAILS4 (VL_API_IPFIX_ALL_EXPORTER_DETAILS, rp, context,
290 ({ ipfix_all_fill_details (rmp, exp); }));
294 vl_api_ipfix_all_exporter_get_t_handler (vl_api_ipfix_all_exporter_get_t *mp)
296 flow_report_main_t *frm = &flow_report_main;
297 vl_api_ipfix_all_exporter_get_reply_t *rmp;
300 REPLY_AND_DETAILS_MACRO (
301 VL_API_IPFIX_ALL_EXPORTER_GET_REPLY, frm->exporters,
302 ({ ipfix_all_exporter_details (frm, cursor, rp, mp->context); }));
306 vl_api_set_ipfix_classify_stream_t_handler
307 (vl_api_set_ipfix_classify_stream_t * mp)
309 vl_api_set_ipfix_classify_stream_reply_t *rmp;
310 flow_report_classify_main_t *fcm = &flow_report_classify_main;
311 flow_report_main_t *frm = &flow_report_main;
312 ipfix_exporter_t *exp = &frm->exporters[0];
314 u32 src_port = UDP_DST_PORT_ipfix;
317 domain_id = ntohl (mp->domain_id);
318 src_port = ntohs (mp->src_port);
320 if (fcm->src_port != 0 &&
321 (fcm->domain_id != domain_id || fcm->src_port != (u16) src_port))
323 int rv = vnet_stream_change (exp, fcm->domain_id, fcm->src_port,
324 domain_id, (u16) src_port);
328 fcm->domain_id = domain_id;
329 fcm->src_port = (u16) src_port;
331 REPLY_MACRO (VL_API_SET_IPFIX_CLASSIFY_STREAM_REPLY);
335 vl_api_ipfix_classify_stream_dump_t_handler
336 (vl_api_ipfix_classify_stream_dump_t * mp)
338 flow_report_classify_main_t *fcm = &flow_report_classify_main;
339 vl_api_registration_t *reg;
340 vl_api_ipfix_classify_stream_details_t *rmp;
342 reg = vl_api_client_index_to_registration (mp->client_index);
346 rmp = vl_msg_api_alloc (sizeof (*rmp));
347 clib_memset (rmp, 0, sizeof (*rmp));
348 rmp->_vl_msg_id = ntohs (VL_API_IPFIX_CLASSIFY_STREAM_DETAILS);
349 rmp->context = mp->context;
350 rmp->domain_id = htonl (fcm->domain_id);
351 rmp->src_port = htons (fcm->src_port);
353 vl_api_send_msg (reg, (u8 *) rmp);
357 vl_api_ipfix_classify_table_add_del_t_handler
358 (vl_api_ipfix_classify_table_add_del_t * mp)
360 vl_api_ipfix_classify_table_add_del_reply_t *rmp;
361 vl_api_registration_t *reg;
362 flow_report_classify_main_t *fcm = &flow_report_classify_main;
363 flow_report_main_t *frm = &flow_report_main;
364 ipfix_exporter_t *exp = &frm->exporters[0];
365 vnet_flow_report_add_del_args_t args;
366 ipfix_classify_table_t *table;
368 u32 classify_table_index;
370 u8 transport_protocol;
373 reg = vl_api_client_index_to_registration (mp->client_index);
377 classify_table_index = ntohl (mp->table_id);
378 ip_version = (mp->ip_version == ADDRESS_IP4) ? 4 : 6;
379 transport_protocol = mp->transport_protocol;
382 if (fcm->src_port == 0)
384 /* call set_ipfix_classify_stream first */
385 rv = VNET_API_ERROR_UNSPECIFIED;
389 clib_memset (&args, 0, sizeof (args));
393 for (i = 0; i < vec_len (fcm->tables); i++)
394 if (ipfix_classify_table_index_valid (i))
395 if (fcm->tables[i].classify_table_index == classify_table_index)
397 table = &fcm->tables[i];
405 rv = VNET_API_ERROR_VALUE_EXIST;
408 table = ipfix_classify_add_table ();
409 table->classify_table_index = classify_table_index;
415 rv = VNET_API_ERROR_NO_SUCH_ENTRY;
420 table->ip_version = ip_version;
421 table->transport_protocol = transport_protocol;
423 args.opaque.as_uword = table - fcm->tables;
424 args.rewrite_callback = ipfix_classify_template_rewrite;
425 args.flow_data_callback = ipfix_classify_send_flows;
426 args.is_add = is_add;
427 args.domain_id = fcm->domain_id;
428 args.src_port = fcm->src_port;
430 rv = vnet_flow_report_add_del (exp, &args, NULL);
432 /* If deleting, or add failed */
433 if (is_add == 0 || (rv && is_add))
434 ipfix_classify_delete_table (table - fcm->tables);
437 REPLY_MACRO (VL_API_SET_IPFIX_CLASSIFY_STREAM_REPLY);
441 send_ipfix_classify_table_details (u32 table_index,
442 vl_api_registration_t * reg, u32 context)
444 flow_report_classify_main_t *fcm = &flow_report_classify_main;
445 vl_api_ipfix_classify_table_details_t *mp;
447 ipfix_classify_table_t *table = &fcm->tables[table_index];
449 mp = vl_msg_api_alloc (sizeof (*mp));
450 clib_memset (mp, 0, sizeof (*mp));
451 mp->_vl_msg_id = ntohs (VL_API_IPFIX_CLASSIFY_TABLE_DETAILS);
452 mp->context = context;
453 mp->table_id = htonl (table->classify_table_index);
454 mp->ip_version = (table->ip_version == 4) ? ADDRESS_IP4 : ADDRESS_IP6;
455 mp->transport_protocol = table->transport_protocol;
457 vl_api_send_msg (reg, (u8 *) mp);
461 vl_api_ipfix_classify_table_dump_t_handler
462 (vl_api_ipfix_classify_table_dump_t * mp)
464 flow_report_classify_main_t *fcm = &flow_report_classify_main;
465 vl_api_registration_t *reg;
468 reg = vl_api_client_index_to_registration (mp->client_index);
472 for (i = 0; i < vec_len (fcm->tables); i++)
473 if (ipfix_classify_table_index_valid (i))
474 send_ipfix_classify_table_details (i, reg, mp->context);
478 vl_api_ipfix_flush_t_handler (vl_api_ipfix_flush_t * mp)
480 flow_report_main_t *frm = &flow_report_main;
481 vl_api_ipfix_flush_reply_t *rmp;
482 vl_api_registration_t *reg;
483 vlib_main_t *vm = vlib_get_main ();
486 reg = vl_api_client_index_to_registration (mp->client_index);
490 /* poke the flow reporting process */
491 vlib_process_signal_event (vm, flow_report_process_node.index,
492 1 /* type_opaque */ , 0 /* data */ );
494 REPLY_MACRO (VL_API_IPFIX_FLUSH_REPLY);
497 #include <vnet/ipfix-export/ipfix_export.api.c>
498 static clib_error_t *
499 flow_api_hookup (vlib_main_t * vm)
501 flow_report_main_t *frm = &flow_report_main;
503 * Set up the (msg_name, crc, message-id) table
505 REPLY_MSG_ID_BASE = setup_message_id_table ();
510 VLIB_API_INIT_FUNCTION (flow_api_hookup);
513 * fd.io coding-style-patch-verification: ON
516 * eval: (c-set-style "gnu")