Line data Source code
1 : /*
2 : * Copyright (c) 2016 Cisco and/or its affiliates.
3 : * Licensed under the Apache License, Version 2.0 (the "License");
4 : * you may not use this file except in compliance with the License.
5 : * You may obtain a copy of the License at:
6 : *
7 : * http://www.apache.org/licenses/LICENSE-2.0
8 : *
9 : * Unless required by applicable law or agreed to in writing, software
10 : * distributed under the License is distributed on an "AS IS" BASIS,
11 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 : * See the License for the specific language governing permissions and
13 : * limitations under the License.
14 : */
15 :
16 : #ifndef VNET_CONTROL_H_
17 : #define VNET_CONTROL_H_
18 :
19 : #include <vnet/vnet.h>
20 : #include <lisp/lisp-cp/gid_dictionary.h>
21 : #include <lisp/lisp-cp/lisp_types.h>
22 : #include <vppinfra/timing_wheel.h>
23 : #include <vppinfra/tw_timer_1t_3w_1024sl_ov.h>
24 :
25 : #define NUMBER_OF_RETRIES 1
26 : #define PENDING_MREQ_EXPIRATION_TIME 3.0 /* seconds */
27 : #define PENDING_MREQ_QUEUE_LEN 5
28 :
29 : #define RLOC_PROBING_INTERVAL 60.0
30 :
31 : /* when map-registration is enabled "quick registration" takes place first.
32 : In this mode ETR sends map-register messages at an increased frequency
33 : until specified message count is reached */
34 : #define QUICK_MAP_REGISTER_MSG_COUNT 5
35 : #define QUICK_MAP_REGISTER_INTERVAL 3.0
36 :
37 : /* normal map-register period */
38 : #define MAP_REGISTER_INTERVAL 60.0
39 :
40 : /* how many tries until next map-server election */
41 : #define MAX_EXPIRED_MAP_REGISTERS_DEFAULT 3
42 :
43 : #define PENDING_MREG_EXPIRATION_TIME 3.0 /* seconds */
44 :
45 : /* 24 hours */
46 : #define MAP_REGISTER_DEFAULT_TTL 86400
47 :
48 : typedef struct
49 : {
50 : gid_address_t src;
51 : gid_address_t dst;
52 : u32 retries_num;
53 : f64 time_to_expire;
54 : u8 is_smr_invoked;
55 : u64 *nonces;
56 : u8 to_be_removed;
57 : } pending_map_request_t;
58 :
59 : typedef struct
60 : {
61 : f64 time_to_expire;
62 : } pending_map_register_t;
63 :
64 : typedef struct
65 : {
66 : gid_address_t leid;
67 : gid_address_t reid;
68 : u8 is_src_dst;
69 : locator_pair_t *locator_pairs;
70 : } fwd_entry_t;
71 :
72 : typedef struct
73 : {
74 : gid_address_t leid;
75 : gid_address_t reid;
76 : } lisp_adjacency_t;
77 :
78 : typedef enum
79 : {
80 : IP4_MISS_PACKET,
81 : IP6_MISS_PACKET
82 : } miss_packet_type_t;
83 :
84 : /* map-server/map-resolver structure */
85 : typedef struct
86 : {
87 : u8 is_down;
88 : f64 last_update;
89 : ip_address_t address;
90 : char *key;
91 : } lisp_msmr_t;
92 :
93 : typedef struct
94 : {
95 : /* headers */
96 : u8 data[100];
97 : u32 length;
98 : miss_packet_type_t type;
99 : } miss_packet_t;
100 :
101 : typedef struct
102 : {
103 : u8 mac[6];
104 : u32 ip4;
105 : } lisp_api_l2_arp_entry_t;
106 :
107 : typedef struct
108 : {
109 : u8 mac[6];
110 : u8 ip6[16];
111 : } lisp_api_ndp_entry_t;
112 :
113 : typedef enum
114 : {
115 : MR_MODE_DST_ONLY = 0,
116 : MR_MODE_SRC_DST,
117 : _MR_MODE_MAX
118 : } map_request_mode_t;
119 :
120 : #define foreach_lisp_flag_bit \
121 : _(USE_PETR, "Use Proxy-ETR") \
122 : _(XTR_MODE, "ITR/ETR mode") \
123 : _(PETR_MODE, "Proxy-ETR mode") \
124 : _(PITR_MODE, "Proxy-ITR mode") \
125 : _(STATS_ENABLED, "Statistics enabled")
126 :
127 : typedef enum lisp_flag_bits
128 : {
129 : #define _(sym, str) LISP_FLAG_BIT_##sym,
130 : foreach_lisp_flag_bit
131 : #undef _
132 : } lisp_flag_bits_e;
133 :
134 : typedef enum lisp_flags
135 : {
136 : #define _(sym, str) LISP_FLAG_##sym = 1 << LISP_FLAG_BIT_##sym,
137 : foreach_lisp_flag_bit
138 : #undef _
139 : } lisp_flags_e;
140 :
141 : typedef struct
142 : {
143 : ip_address_t addr;
144 : u32 bd;
145 : } lisp_l2_arp_key_t;
146 :
147 : typedef enum
148 : {
149 : LISP_TRANSPORT_PROTOCOL_UDP = 1,
150 : LISP_TRANSPORT_PROTOCOL_API
151 : } lisp_transport_protocol_t;
152 :
153 : typedef struct
154 : {
155 : u64 nonce;
156 : u8 is_rloc_probe;
157 : mapping_t *mappings;
158 : volatile u8 is_free;
159 : } map_records_arg_t;
160 :
161 : typedef struct
162 : {
163 : u32 flags;
164 :
165 : /* LISP feature status */
166 : u8 is_enabled;
167 :
168 : /* eid table */
169 : gid_dictionary_t mapping_index_by_gid;
170 :
171 : /* pool of mappings */
172 : mapping_t *mapping_pool;
173 :
174 : /* hash map of secret keys by mapping index */
175 : u8 *key_by_mapping_index;
176 :
177 : /* pool of locators */
178 : locator_t *locator_pool;
179 :
180 : /* pool of locator-sets */
181 : locator_set_t *locator_set_pool;
182 :
183 : /* vector of locator-set vectors composed of and indexed by locator index */
184 : u32 **locator_to_locator_sets;
185 :
186 : /* hash map of locators by name */
187 : uword *locator_set_index_by_name;
188 :
189 : /* vector of eid index vectors supported and indexed by locator-set index */
190 : u32 **locator_set_to_eids;
191 :
192 : /* vectors of indexes for local locator-sets and mappings */
193 : u32 *local_mappings_indexes;
194 : u32 *local_locator_set_indexes;
195 :
196 : /* hash map of forwarding entries by mapping index */
197 : u32 *fwd_entry_by_mapping_index;
198 :
199 : /* pool of vectors of rmts per lcl mapping in adjacencies */
200 : u32 **lcl_to_rmt_adjacencies;
201 :
202 : /* hash of pool positions of vectors of rmts by lcl mapping index */
203 : u32 *lcl_to_rmt_adjs_by_lcl_idx;
204 :
205 : /* forwarding entries pool */
206 : fwd_entry_t *fwd_entry_pool;
207 :
208 : /* hash map keyed by nonce of pending map-requests */
209 : uword *pending_map_requests_by_nonce;
210 :
211 : /* pool of pending map requests */
212 : pending_map_request_t *pending_map_requests_pool;
213 :
214 : /* pool of pending map registers */
215 : pending_map_register_t *pending_map_registers_pool;
216 :
217 : /* hash map of sent map register messages */
218 : uword *map_register_messages_by_nonce;
219 :
220 : /* vector of map-resolvers */
221 : lisp_msmr_t *map_resolvers;
222 :
223 : /* vector of map-servers */
224 : lisp_msmr_t *map_servers;
225 :
226 : /* map resolver address currently being used for sending requests.
227 : * This has to be an actual address and not an index to map_resolvers vector
228 : * since the vector may be modified during request resend/retry procedure
229 : * and break things :-) */
230 : ip_address_t active_map_resolver;
231 : ip_address_t active_map_server;
232 :
233 : u8 do_map_resolver_election;
234 : u8 do_map_server_election;
235 :
236 : /* map-request locator set index */
237 : u32 mreq_itr_rlocs;
238 :
239 : /* vni to vrf hash tables */
240 : uword *table_id_by_vni;
241 : uword *vni_by_table_id;
242 :
243 : /* vni to bd-index hash tables */
244 : uword *bd_id_by_vni;
245 : uword *vni_by_bd_id;
246 :
247 : /* track l2 and l3 interfaces that have been created for vni */
248 : uword *l2_dp_intf_by_vni;
249 :
250 : /* Proxy ITR map index */
251 : u32 pitr_map_index;
252 :
253 : /** Proxy ETR map index used for 'use-petr'.
254 : * Not related to PETR tunnel mode */
255 : u32 petr_map_index;
256 :
257 : /* mapping index for NSH */
258 : u32 nsh_map_index;
259 :
260 : /* map request mode */
261 : u8 map_request_mode;
262 :
263 : /* enable/disable map registering */
264 : u8 map_registering;
265 :
266 : /* enable/disable rloc-probing */
267 : u8 rloc_probing;
268 :
269 : /* timing wheel for mapping timeouts */
270 : TWT (tw_timer_wheel) wheel;
271 :
272 : /** Per thread pool of records shared with thread0 */
273 : map_records_arg_t **map_records_args_pool;
274 :
275 : /* TTL used for all mappings when registering */
276 : u32 map_register_ttl;
277 :
278 : /* control variables for map server election */
279 : u32 max_expired_map_registers;
280 : u32 expired_map_registers;
281 :
282 : /** either UDP based or binary API. Default is UDP */
283 : lisp_transport_protocol_t transport_protocol;
284 :
285 : /** Retry service node index */
286 : u32 retry_service_index;
287 :
288 : /* commodity */
289 : ip4_main_t *im4;
290 : ip6_main_t *im6;
291 : vlib_main_t *vlib_main;
292 : vnet_main_t *vnet_main;
293 : } lisp_cp_main_t;
294 :
295 : /* lisp-gpe control plane */
296 : extern lisp_cp_main_t lisp_control_main;
297 :
298 : extern vlib_node_registration_t lisp_cp_input_node;
299 : extern vlib_node_registration_t lisp_cp_lookup_ip4_node;
300 : extern vlib_node_registration_t lisp_cp_lookup_ip6_node;
301 :
302 : clib_error_t *lisp_cp_init (vlib_main_t *);
303 :
304 : always_inline lisp_cp_main_t *
305 613 : vnet_lisp_cp_get_main ()
306 : {
307 613 : return &lisp_control_main;
308 : }
309 :
310 : void
311 : get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
312 : gid_address_t * src, gid_address_t * dst,
313 : u16 type);
314 :
315 : typedef struct
316 : {
317 : u8 is_add;
318 : union
319 : {
320 : u8 *name;
321 : u32 index;
322 : };
323 : locator_t *locators;
324 : u8 local;
325 : } vnet_lisp_add_del_locator_set_args_t;
326 :
327 : int
328 : vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
329 : u32 * ls_index);
330 : int
331 : vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
332 : locator_set_t * ls, u32 * ls_index);
333 :
334 : typedef struct
335 : {
336 : u8 is_add;
337 : gid_address_t eid;
338 : u32 locator_set_index;
339 :
340 : u32 ttl;
341 : u8 action;
342 : u8 authoritative;
343 :
344 : u8 local;
345 : u8 is_static;
346 : u8 *key;
347 : u8 key_id;
348 : } vnet_lisp_add_del_mapping_args_t;
349 :
350 : int
351 : vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
352 : u32 * map_index);
353 : int
354 : vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
355 : u32 * map_index_result);
356 :
357 : int
358 : vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
359 : locator_t * rlocs, u32 * res_map_index,
360 : u8 * is_changed);
361 :
362 : int vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index);
363 :
364 : typedef struct
365 : {
366 : gid_address_t reid;
367 : gid_address_t leid;
368 : u8 is_add;
369 : } vnet_lisp_add_del_adjacency_args_t;
370 :
371 : int vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a);
372 :
373 : typedef struct
374 : {
375 : u8 is_add;
376 : ip_address_t address;
377 : } vnet_lisp_add_del_map_resolver_args_t;
378 :
379 : int
380 : vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a);
381 : int vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add);
382 :
383 : clib_error_t *vnet_lisp_enable_disable (u8 is_enabled);
384 : u8 vnet_lisp_enable_disable_status (void);
385 : void vnet_lisp_create_retry_process (lisp_cp_main_t * lcm);
386 :
387 : int vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add);
388 : int vnet_lisp_use_petr (ip_address_t * ip, u8 is_add);
389 :
390 : typedef struct
391 : {
392 : u8 is_add;
393 : u8 *locator_set_name;
394 : } vnet_lisp_add_del_mreq_itr_rloc_args_t;
395 :
396 : int
397 : vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a);
398 :
399 : int vnet_lisp_clear_all_remote_adjacencies (void);
400 :
401 : int vnet_lisp_eid_table_map (u32 vni, u32 vrf, u8 is_l2, u8 is_add);
402 : int vnet_lisp_add_del_map_table_key (gid_address_t * eid, char *key,
403 : u8 is_add);
404 : int vnet_lisp_set_map_request_mode (u8 mode);
405 : u8 vnet_lisp_get_map_request_mode (void);
406 : lisp_adjacency_t *vnet_lisp_adjacencies_get_by_vni (u32 vni);
407 : int vnet_lisp_rloc_probe_enable_disable (u8 is_enable);
408 : int vnet_lisp_map_register_enable_disable (u8 is_enable);
409 : u8 vnet_lisp_map_register_state_get (void);
410 : u8 vnet_lisp_rloc_probe_state_get (void);
411 : int vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac,
412 : u8 is_add);
413 : u32 *vnet_lisp_l2_arp_bds_get (void);
414 : lisp_api_l2_arp_entry_t *vnet_lisp_l2_arp_entries_get_by_bd (u32 bd);
415 : int vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add);
416 : int vnet_lisp_map_register_set_ttl (u32 ttl);
417 : u32 vnet_lisp_map_register_get_ttl (void);
418 : int vnet_lisp_map_register_fallback_threshold_set (u32 value);
419 : u32 vnet_lisp_map_register_fallback_threshold_get (void);
420 : u32 *vnet_lisp_ndp_bds_get (void);
421 : lisp_api_ndp_entry_t *vnet_lisp_ndp_entries_get_by_bd (u32 bd);
422 : u32 vnet_lisp_set_transport_protocol (u8 protocol);
423 : lisp_transport_protocol_t vnet_lisp_get_transport_protocol (void);
424 :
425 : extern int vnet_lisp_enable_disable_xtr_mode (u8 is_enabled);
426 : extern int vnet_lisp_enable_disable_pitr_mode (u8 is_enabled);
427 : extern int vnet_lisp_enable_disable_petr_mode (u8 is_enabled);
428 : extern u8 vnet_lisp_get_xtr_mode (void);
429 : extern u8 vnet_lisp_get_pitr_mode (void);
430 : extern u8 vnet_lisp_get_petr_mode (void);
431 :
432 : map_records_arg_t *parse_map_reply (vlib_buffer_t * b);
433 :
434 : always_inline mapping_t *
435 0 : lisp_get_petr_mapping (lisp_cp_main_t * lcm)
436 : {
437 0 : return pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
438 : }
439 :
440 : #endif /* VNET_CONTROL_H_ */
441 :
442 : /*
443 : * fd.io coding-style-patch-verification: ON
444 : *
445 : * Local Variables:
446 : * eval: (c-set-style "gnu")
447 : * End:
448 : */
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