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1 | /********************************************************************* |
2 | * Copyright 2014,2015,2016,2017 Cumulus Networks, Inc. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License as published by the Free | |
6 | * Software Foundation; either version 2 of the License, or (at your option) | |
7 | * any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; see the file COPYING; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | * | |
18 | * bfd.h: implements the BFD protocol. | |
19 | */ | |
20 | ||
21 | #ifndef _BFD_H_ | |
22 | #define _BFD_H_ | |
23 | ||
24 | #include <netinet/in.h> | |
25 | ||
26 | #include <stdbool.h> | |
27 | #include <stdarg.h> | |
28 | #include <stdint.h> | |
29 | ||
30 | #include "lib/hash.h" | |
31 | #include "lib/libfrr.h" | |
32 | #include "lib/qobj.h" | |
33 | #include "lib/queue.h" | |
80edb675 | 34 | #include "lib/vrf.h" |
e9e2c950 RZ |
35 | |
36 | #include "bfdctl.h" | |
37 | ||
38 | #define ETHERNET_ADDRESS_LENGTH 6 | |
39 | ||
40 | #ifdef BFD_DEBUG | |
41 | #define BFDD_JSON_CONV_OPTIONS (JSON_C_TO_STRING_PRETTY) | |
42 | #else | |
43 | #define BFDD_JSON_CONV_OPTIONS (0) | |
44 | #endif | |
45 | ||
46 | DECLARE_MGROUP(BFDD); | |
47 | DECLARE_MTYPE(BFDD_TMP); | |
48 | DECLARE_MTYPE(BFDD_CONFIG); | |
49 | DECLARE_MTYPE(BFDD_LABEL); | |
50 | DECLARE_MTYPE(BFDD_CONTROL); | |
51 | DECLARE_MTYPE(BFDD_NOTIFICATION); | |
52 | ||
53 | struct bfd_timers { | |
54 | uint32_t desired_min_tx; | |
55 | uint32_t required_min_rx; | |
56 | uint32_t required_min_echo; | |
57 | }; | |
58 | ||
59 | struct bfd_discrs { | |
60 | uint32_t my_discr; | |
61 | uint32_t remote_discr; | |
62 | }; | |
63 | ||
64 | /* | |
65 | * Format of control packet. From section 4) | |
66 | */ | |
67 | struct bfd_pkt { | |
68 | union { | |
69 | uint32_t byteFields; | |
70 | struct { | |
71 | uint8_t diag; | |
72 | uint8_t flags; | |
73 | uint8_t detect_mult; | |
74 | uint8_t len; | |
75 | }; | |
76 | }; | |
77 | struct bfd_discrs discrs; | |
78 | struct bfd_timers timers; | |
79 | }; | |
80 | ||
81 | /* | |
82 | * Format of Echo packet. | |
83 | */ | |
84 | struct bfd_echo_pkt { | |
85 | union { | |
86 | uint32_t byteFields; | |
87 | struct { | |
88 | uint8_t ver; | |
89 | uint8_t len; | |
90 | uint16_t reserved; | |
91 | }; | |
92 | }; | |
93 | uint32_t my_discr; | |
94 | uint8_t pad[16]; | |
95 | }; | |
96 | ||
97 | ||
98 | /* Macros for manipulating control packets */ | |
99 | #define BFD_VERMASK 0x03 | |
100 | #define BFD_DIAGMASK 0x1F | |
101 | #define BFD_GETVER(diag) ((diag >> 5) & BFD_VERMASK) | |
102 | #define BFD_SETVER(diag, val) ((diag) |= (val & BFD_VERMASK) << 5) | |
103 | #define BFD_VERSION 1 | |
104 | #define BFD_PBIT 0x20 | |
105 | #define BFD_FBIT 0x10 | |
106 | #define BFD_CBIT 0x08 | |
107 | #define BFD_ABIT 0x04 | |
108 | #define BFD_DEMANDBIT 0x02 | |
e9e2c950 RZ |
109 | #define BFD_SETDEMANDBIT(flags, val) \ |
110 | { \ | |
111 | if ((val)) \ | |
112 | flags |= BFD_DEMANDBIT; \ | |
113 | } | |
114 | #define BFD_SETPBIT(flags, val) \ | |
115 | { \ | |
116 | if ((val)) \ | |
117 | flags |= BFD_PBIT; \ | |
118 | } | |
119 | #define BFD_GETPBIT(flags) (flags & BFD_PBIT) | |
120 | #define BFD_SETFBIT(flags, val) \ | |
121 | { \ | |
122 | if ((val)) \ | |
123 | flags |= BFD_FBIT; \ | |
124 | } | |
125 | #define BFD_GETFBIT(flags) (flags & BFD_FBIT) | |
126 | #define BFD_SETSTATE(flags, val) \ | |
127 | { \ | |
128 | if ((val)) \ | |
129 | flags |= (val & 0x3) << 6; \ | |
130 | } | |
131 | #define BFD_GETSTATE(flags) ((flags >> 6) & 0x3) | |
132 | #define BFD_ECHO_VERSION 1 | |
133 | #define BFD_ECHO_PKT_LEN sizeof(struct bfd_echo_pkt) | |
e9e2c950 | 134 | |
40675ea9 RZ |
135 | enum bfd_diagnosticis { |
136 | BD_OK = 0, | |
137 | /* Control Detection Time Expired. */ | |
138 | BD_CONTROL_EXPIRED = 1, | |
139 | /* Echo Function Failed. */ | |
140 | BD_ECHO_FAILED = 2, | |
141 | /* Neighbor Signaled Session Down. */ | |
142 | BD_NEIGHBOR_DOWN = 3, | |
143 | /* Forwarding Plane Reset. */ | |
144 | BD_FORWARDING_RESET = 4, | |
145 | /* Path Down. */ | |
146 | BD_PATH_DOWN = 5, | |
147 | /* Concatenated Path Down. */ | |
148 | BD_CONCATPATH_DOWN = 6, | |
149 | /* Administratively Down. */ | |
150 | BD_ADMIN_DOWN = 7, | |
151 | /* Reverse Concatenated Path Down. */ | |
152 | BD_REVCONCATPATH_DOWN = 8, | |
153 | /* 9..31: reserved. */ | |
154 | }; | |
155 | ||
e9e2c950 RZ |
156 | /* BFD session flags */ |
157 | enum bfd_session_flags { | |
158 | BFD_SESS_FLAG_NONE = 0, | |
159 | BFD_SESS_FLAG_ECHO = 1 << 0, /* BFD Echo functionality */ | |
160 | BFD_SESS_FLAG_ECHO_ACTIVE = 1 << 1, /* BFD Echo Packets are being sent | |
161 | * actively | |
162 | */ | |
163 | BFD_SESS_FLAG_MH = 1 << 2, /* BFD Multi-hop session */ | |
e9e2c950 RZ |
164 | BFD_SESS_FLAG_IPV6 = 1 << 4, /* BFD IPv6 session */ |
165 | BFD_SESS_FLAG_SEND_EVT_ACTIVE = 1 << 5, /* send event timer active */ | |
166 | BFD_SESS_FLAG_SEND_EVT_IGNORE = 1 << 6, /* ignore send event when timer | |
167 | * expires | |
168 | */ | |
169 | BFD_SESS_FLAG_SHUTDOWN = 1 << 7, /* disable BGP peer function */ | |
170 | }; | |
171 | ||
172 | #define BFD_SET_FLAG(field, flag) (field |= flag) | |
173 | #define BFD_UNSET_FLAG(field, flag) (field &= ~flag) | |
174 | #define BFD_CHECK_FLAG(field, flag) (field & flag) | |
175 | ||
176 | /* BFD session hash keys */ | |
177 | struct bfd_shop_key { | |
178 | struct sockaddr_any peer; | |
b333abc2 | 179 | ifindex_t ifindex; |
e9e2c950 RZ |
180 | }; |
181 | ||
182 | struct bfd_mhop_key { | |
183 | struct sockaddr_any peer; | |
184 | struct sockaddr_any local; | |
b333abc2 | 185 | vrf_id_t vrfid; |
e9e2c950 RZ |
186 | }; |
187 | ||
188 | struct bfd_session_stats { | |
189 | uint64_t rx_ctrl_pkt; | |
190 | uint64_t tx_ctrl_pkt; | |
191 | uint64_t rx_echo_pkt; | |
192 | uint64_t tx_echo_pkt; | |
0684c9b1 RZ |
193 | uint64_t session_up; |
194 | uint64_t session_down; | |
195 | uint64_t znotification; | |
e9e2c950 RZ |
196 | }; |
197 | ||
e9e2c950 RZ |
198 | /* bfd_session shortcut label forwarding. */ |
199 | struct peer_label; | |
200 | ||
201 | /* | |
202 | * Session state information | |
203 | */ | |
204 | struct bfd_session { | |
205 | ||
206 | /* protocol state per RFC 5880*/ | |
207 | uint8_t ses_state; | |
208 | struct bfd_discrs discrs; | |
209 | uint8_t local_diag; | |
210 | uint8_t demand_mode; | |
211 | uint8_t detect_mult; | |
212 | uint8_t remote_detect_mult; | |
213 | uint8_t mh_ttl; | |
214 | ||
215 | /* Timers */ | |
216 | struct bfd_timers timers; | |
f43b9368 | 217 | struct bfd_timers cur_timers; |
e9e2c950 RZ |
218 | uint64_t detect_TO; |
219 | struct thread *echo_recvtimer_ev; | |
220 | struct thread *recvtimer_ev; | |
221 | uint64_t xmt_TO; | |
222 | uint64_t echo_xmt_TO; | |
223 | struct thread *xmttimer_ev; | |
224 | struct thread *echo_xmttimer_ev; | |
225 | uint64_t echo_detect_TO; | |
226 | ||
227 | /* software object state */ | |
228 | uint8_t polling; | |
229 | ||
230 | /* This and the localDiscr are the keys to state info */ | |
231 | struct peer_label *pl; | |
232 | union { | |
233 | struct bfd_shop_key shop; | |
234 | struct bfd_mhop_key mhop; | |
235 | }; | |
236 | int sock; | |
237 | ||
238 | struct sockaddr_any local_address; | |
239 | struct sockaddr_any local_ip; | |
80edb675 | 240 | struct interface *ifp; |
b333abc2 | 241 | struct vrf *vrf; |
e9e2c950 RZ |
242 | uint8_t local_mac[ETHERNET_ADDRESS_LENGTH]; |
243 | uint8_t peer_mac[ETHERNET_ADDRESS_LENGTH]; | |
e9e2c950 RZ |
244 | |
245 | /* BFD session flags */ | |
246 | enum bfd_session_flags flags; | |
247 | ||
e9e2c950 | 248 | struct bfd_session_stats stats; |
e9e2c950 RZ |
249 | |
250 | struct timeval uptime; /* last up time */ | |
251 | struct timeval downtime; /* last down time */ | |
252 | ||
253 | /* Remote peer data (for debugging mostly) */ | |
254 | uint8_t remote_diag; | |
255 | struct bfd_timers remote_timers; | |
256 | ||
257 | uint64_t refcount; /* number of pointers referencing this. */ | |
258 | ||
259 | /* VTY context data. */ | |
260 | QOBJ_FIELDS; | |
261 | }; | |
262 | DECLARE_QOBJ_TYPE(bfd_session); | |
263 | ||
264 | struct peer_label { | |
265 | TAILQ_ENTRY(peer_label) pl_entry; | |
266 | ||
267 | struct bfd_session *pl_bs; | |
268 | char pl_label[MAXNAMELEN]; | |
269 | }; | |
270 | TAILQ_HEAD(pllist, peer_label); | |
271 | ||
272 | struct bfd_diag_str_list { | |
273 | const char *str; | |
274 | int type; | |
275 | }; | |
276 | ||
277 | struct bfd_state_str_list { | |
278 | const char *str; | |
279 | int type; | |
280 | }; | |
281 | ||
e9e2c950 RZ |
282 | |
283 | /* States defined per 4.1 */ | |
284 | #define PTM_BFD_ADM_DOWN 0 | |
285 | #define PTM_BFD_DOWN 1 | |
286 | #define PTM_BFD_INIT 2 | |
287 | #define PTM_BFD_UP 3 | |
288 | ||
289 | ||
290 | /* Various constants */ | |
291 | /* Retrieved from ptm_timer.h from Cumulus PTM sources. */ | |
292 | #define MSEC_PER_SEC 1000L | |
293 | #define NSEC_PER_MSEC 1000000L | |
294 | ||
295 | #define BFD_DEF_DEMAND 0 | |
296 | #define BFD_DEFDETECTMULT 3 | |
297 | #define BFD_DEFDESIREDMINTX (300 * MSEC_PER_SEC) | |
298 | #define BFD_DEFREQUIREDMINRX (300 * MSEC_PER_SEC) | |
299 | #define BFD_DEF_REQ_MIN_ECHO (50 * MSEC_PER_SEC) | |
1f2d5f91 | 300 | #define BFD_DEF_SLOWTX (1000 * MSEC_PER_SEC) |
e9e2c950 RZ |
301 | #define BFD_DEF_MHOP_TTL 5 |
302 | #define BFD_PKT_LEN 24 /* Length of control packet */ | |
303 | #define BFD_TTL_VAL 255 | |
304 | #define BFD_RCV_TTL_VAL 1 | |
305 | #define BFD_TOS_VAL 0xC0 | |
306 | #define BFD_PKT_INFO_VAL 1 | |
307 | #define BFD_IPV6_PKT_INFO_VAL 1 | |
308 | #define BFD_IPV6_ONLY_VAL 1 | |
309 | #define BFD_SRCPORTINIT 49142 | |
310 | #define BFD_SRCPORTMAX 65536 | |
311 | #define BFD_DEFDESTPORT 3784 | |
312 | #define BFD_DEF_ECHO_PORT 3785 | |
313 | #define BFD_DEF_MHOP_DEST_PORT 4784 | |
314 | #define BFD_CMD_STRING_LEN (MAXNAMELEN + 50) | |
315 | #define BFD_BUFFER_LEN (BFD_CMD_STRING_LEN + MAXNAMELEN + 1) | |
316 | ||
317 | /* | |
318 | * control.c | |
319 | * | |
320 | * Daemon control code to speak with local consumers. | |
321 | */ | |
322 | ||
323 | /* See 'bfdctrl.h' for client protocol definitions. */ | |
324 | ||
325 | struct bfd_control_buffer { | |
326 | size_t bcb_left; | |
327 | size_t bcb_pos; | |
328 | union { | |
329 | struct bfd_control_msg *bcb_bcm; | |
330 | uint8_t *bcb_buf; | |
331 | }; | |
332 | }; | |
333 | ||
334 | struct bfd_control_queue { | |
335 | TAILQ_ENTRY(bfd_control_queue) bcq_entry; | |
336 | ||
337 | struct bfd_control_buffer bcq_bcb; | |
338 | }; | |
339 | TAILQ_HEAD(bcqueue, bfd_control_queue); | |
340 | ||
341 | struct bfd_notify_peer { | |
342 | TAILQ_ENTRY(bfd_notify_peer) bnp_entry; | |
343 | ||
344 | struct bfd_session *bnp_bs; | |
345 | }; | |
346 | TAILQ_HEAD(bnplist, bfd_notify_peer); | |
347 | ||
348 | struct bfd_control_socket { | |
349 | TAILQ_ENTRY(bfd_control_socket) bcs_entry; | |
350 | ||
351 | int bcs_sd; | |
352 | struct thread *bcs_ev; | |
353 | struct thread *bcs_outev; | |
354 | struct bcqueue bcs_bcqueue; | |
355 | ||
356 | /* Notification data */ | |
357 | uint64_t bcs_notify; | |
358 | struct bnplist bcs_bnplist; | |
359 | ||
360 | enum bc_msg_version bcs_version; | |
361 | enum bc_msg_type bcs_type; | |
362 | ||
363 | /* Message buffering */ | |
364 | struct bfd_control_buffer bcs_bin; | |
365 | struct bfd_control_buffer *bcs_bout; | |
366 | }; | |
367 | TAILQ_HEAD(bcslist, bfd_control_socket); | |
368 | ||
369 | int control_init(const char *path); | |
370 | void control_shutdown(void); | |
371 | int control_notify(struct bfd_session *bs); | |
372 | int control_notify_config(const char *op, struct bfd_session *bs); | |
373 | int control_accept(struct thread *t); | |
374 | ||
375 | ||
376 | /* | |
377 | * bfdd.c | |
378 | * | |
379 | * Daemon specific code. | |
380 | */ | |
381 | struct bfd_global { | |
382 | int bg_shop; | |
383 | int bg_mhop; | |
384 | int bg_shop6; | |
385 | int bg_mhop6; | |
386 | int bg_echo; | |
2f11c53f | 387 | int bg_echov6; |
e9e2c950 RZ |
388 | struct thread *bg_ev[6]; |
389 | ||
390 | int bg_csock; | |
391 | struct thread *bg_csockev; | |
392 | struct bcslist bg_bcslist; | |
393 | ||
394 | struct pllist bg_pllist; | |
395 | }; | |
396 | extern struct bfd_global bglobal; | |
397 | extern struct bfd_diag_str_list diag_list[]; | |
398 | extern struct bfd_state_str_list state_list[]; | |
399 | ||
400 | void socket_close(int *s); | |
401 | ||
402 | ||
403 | /* | |
404 | * config.c | |
405 | * | |
406 | * Contains the code related with loading/reloading configuration. | |
407 | */ | |
408 | int parse_config(const char *fname); | |
409 | int config_request_add(const char *jsonstr); | |
410 | int config_request_del(const char *jsonstr); | |
411 | char *config_response(const char *status, const char *error); | |
412 | char *config_notify(struct bfd_session *bs); | |
413 | char *config_notify_config(const char *op, struct bfd_session *bs); | |
414 | ||
415 | typedef int (*bpc_handle)(struct bfd_peer_cfg *, void *arg); | |
416 | int config_notify_request(struct bfd_control_socket *bcs, const char *jsonstr, | |
417 | bpc_handle bh); | |
418 | ||
419 | struct peer_label *pl_new(const char *label, struct bfd_session *bs); | |
420 | struct peer_label *pl_find(const char *label); | |
421 | void pl_free(struct peer_label *pl); | |
422 | ||
423 | ||
424 | /* | |
425 | * log.c | |
426 | * | |
427 | * Contains code that does the logging procedures. Might implement multiple | |
428 | * backends (e.g. zebra log, syslog or other logging lib). | |
429 | */ | |
430 | enum blog_level { | |
431 | /* level vs syslog equivalent */ | |
432 | BLOG_DEBUG = 0, /* LOG_DEBUG */ | |
433 | BLOG_INFO = 1, /* LOG_INFO */ | |
434 | BLOG_WARNING = 2, /* LOG_WARNING */ | |
435 | BLOG_ERROR = 3, /* LOG_ERR */ | |
436 | BLOG_FATAL = 4, /* LOG_CRIT */ | |
437 | }; | |
438 | ||
439 | void log_init(int foreground, enum blog_level level, | |
440 | struct frr_daemon_info *fdi); | |
441 | void log_info(const char *fmt, ...); | |
442 | void log_debug(const char *fmt, ...); | |
443 | void log_warning(const char *fmt, ...); | |
444 | void log_error(const char *fmt, ...); | |
445 | void log_fatal(const char *fmt, ...); | |
446 | ||
e9e2c950 RZ |
447 | |
448 | /* | |
449 | * bfd_packet.c | |
450 | * | |
451 | * Contains the code related with receiving/seding, packing/unpacking BFD data. | |
452 | */ | |
6e01e275 RZ |
453 | int bp_set_ttlv6(int sd, uint8_t value); |
454 | int bp_set_ttl(int sd, uint8_t value); | |
455 | int bp_set_tosv6(int sd, uint8_t value); | |
456 | int bp_set_tos(int sd, uint8_t value); | |
e9e2c950 RZ |
457 | int bp_bind_dev(int sd, const char *dev); |
458 | ||
459 | int bp_udp_shop(void); | |
460 | int bp_udp_mhop(void); | |
461 | int bp_udp6_shop(void); | |
462 | int bp_udp6_mhop(void); | |
463 | int bp_peer_socket(struct bfd_peer_cfg *bpc); | |
464 | int bp_peer_socketv6(struct bfd_peer_cfg *bpc); | |
2f11c53f RZ |
465 | int bp_echo_socket(void); |
466 | int bp_echov6_socket(void); | |
e9e2c950 RZ |
467 | |
468 | void ptm_bfd_snd(struct bfd_session *bfd, int fbit); | |
469 | void ptm_bfd_echo_snd(struct bfd_session *bfd); | |
470 | ||
471 | int bfd_recv_cb(struct thread *t); | |
472 | ||
e9e2c950 RZ |
473 | |
474 | /* | |
475 | * event.c | |
476 | * | |
477 | * Contains the code related with event loop. | |
478 | */ | |
479 | typedef void (*bfd_ev_cb)(struct thread *t); | |
480 | ||
481 | void bfd_recvtimer_update(struct bfd_session *bs); | |
482 | void bfd_echo_recvtimer_update(struct bfd_session *bs); | |
483 | void bfd_xmttimer_update(struct bfd_session *bs, uint64_t jitter); | |
484 | void bfd_echo_xmttimer_update(struct bfd_session *bs, uint64_t jitter); | |
485 | ||
486 | void bfd_xmttimer_delete(struct bfd_session *bs); | |
487 | void bfd_echo_xmttimer_delete(struct bfd_session *bs); | |
488 | void bfd_recvtimer_delete(struct bfd_session *bs); | |
489 | void bfd_echo_recvtimer_delete(struct bfd_session *bs); | |
490 | ||
491 | void bfd_recvtimer_assign(struct bfd_session *bs, bfd_ev_cb cb, int sd); | |
492 | void bfd_echo_recvtimer_assign(struct bfd_session *bs, bfd_ev_cb cb, int sd); | |
493 | void bfd_xmttimer_assign(struct bfd_session *bs, bfd_ev_cb cb); | |
494 | void bfd_echo_xmttimer_assign(struct bfd_session *bs, bfd_ev_cb cb); | |
495 | ||
496 | ||
497 | /* | |
498 | * bfd.c | |
499 | * | |
500 | * BFD protocol specific code. | |
501 | */ | |
502 | struct bfd_session *ptm_bfd_sess_new(struct bfd_peer_cfg *bpc); | |
503 | int ptm_bfd_ses_del(struct bfd_peer_cfg *bpc); | |
504 | void ptm_bfd_ses_dn(struct bfd_session *bfd, uint8_t diag); | |
505 | void ptm_bfd_ses_up(struct bfd_session *bfd); | |
8bd859f6 | 506 | void ptm_bfd_echo_stop(struct bfd_session *bfd); |
e9e2c950 RZ |
507 | void ptm_bfd_echo_start(struct bfd_session *bfd); |
508 | void ptm_bfd_xmt_TO(struct bfd_session *bfd, int fbit); | |
509 | void ptm_bfd_start_xmt_timer(struct bfd_session *bfd, bool is_echo); | |
b333abc2 RZ |
510 | struct bfd_session *ptm_bfd_sess_find(struct bfd_pkt *, struct sockaddr_any *, |
511 | struct sockaddr_any *, ifindex_t, | |
512 | vrf_id_t, bool); | |
e9e2c950 RZ |
513 | |
514 | struct bfd_session *bs_peer_find(struct bfd_peer_cfg *bpc); | |
515 | int bfd_session_update_label(struct bfd_session *bs, const char *nlabel); | |
d3f3a2c4 | 516 | void bfd_set_polling(struct bfd_session *bs); |
aef131af | 517 | void bs_state_handler(struct bfd_session *, int); |
c0ef9a8a RZ |
518 | void bs_echo_timer_handler(struct bfd_session *); |
519 | void bs_final_handler(struct bfd_session *); | |
b912b189 | 520 | void bs_set_slow_timers(struct bfd_session *bs); |
e9e2c950 RZ |
521 | const char *satostr(struct sockaddr_any *sa); |
522 | const char *diag2str(uint8_t diag); | |
523 | int strtosa(const char *addr, struct sockaddr_any *sa); | |
524 | void integer2timestr(uint64_t time, char *buf, size_t buflen); | |
03e7f088 | 525 | const char *bs_to_string(struct bfd_session *bs); |
e9e2c950 RZ |
526 | |
527 | /* BFD hash data structures interface */ | |
528 | void bfd_initialize(void); | |
529 | void bfd_shutdown(void); | |
530 | struct bfd_session *bfd_id_lookup(uint32_t id); | |
531 | struct bfd_session *bfd_shop_lookup(struct bfd_shop_key shop); | |
532 | struct bfd_session *bfd_mhop_lookup(struct bfd_mhop_key mhop); | |
533 | struct bfd_vrf *bfd_vrf_lookup(int vrf_id); | |
534 | struct bfd_iface *bfd_iface_lookup(const char *ifname); | |
535 | ||
536 | struct bfd_session *bfd_id_delete(uint32_t id); | |
537 | struct bfd_session *bfd_shop_delete(struct bfd_shop_key shop); | |
538 | struct bfd_session *bfd_mhop_delete(struct bfd_mhop_key mhop); | |
539 | struct bfd_vrf *bfd_vrf_delete(int vrf_id); | |
540 | struct bfd_iface *bfd_iface_delete(const char *ifname); | |
541 | ||
542 | bool bfd_id_insert(struct bfd_session *bs); | |
543 | bool bfd_shop_insert(struct bfd_session *bs); | |
544 | bool bfd_mhop_insert(struct bfd_session *bs); | |
545 | bool bfd_vrf_insert(struct bfd_vrf *vrf); | |
546 | bool bfd_iface_insert(struct bfd_iface *iface); | |
547 | ||
548 | typedef void (*hash_iter_func)(struct hash_backet *hb, void *arg); | |
549 | void bfd_id_iterate(hash_iter_func hif, void *arg); | |
550 | void bfd_shop_iterate(hash_iter_func hif, void *arg); | |
551 | void bfd_mhop_iterate(hash_iter_func hif, void *arg); | |
552 | void bfd_vrf_iterate(hash_iter_func hif, void *arg); | |
553 | void bfd_iface_iterate(hash_iter_func hif, void *arg); | |
554 | ||
555 | /* Export callback functions for `event.c`. */ | |
556 | extern struct thread_master *master; | |
557 | ||
558 | int bfd_recvtimer_cb(struct thread *t); | |
559 | int bfd_echo_recvtimer_cb(struct thread *t); | |
560 | int bfd_xmt_cb(struct thread *t); | |
561 | int bfd_echo_xmt_cb(struct thread *t); | |
562 | ||
563 | ||
c2f29cf3 RZ |
564 | /* |
565 | * bfdd_vty.c | |
566 | * | |
567 | * BFD daemon vty shell commands. | |
568 | */ | |
569 | void bfdd_vty_init(void); | |
570 | ||
571 | ||
d3af6147 RZ |
572 | /* |
573 | * ptm_adapter.c | |
574 | */ | |
575 | void bfdd_zclient_init(struct zebra_privs_t *bfdd_priv); | |
576 | void bfdd_zclient_stop(void); | |
577 | ||
578 | int ptm_bfd_notify(struct bfd_session *bs); | |
579 | ||
e9e2c950 | 580 | #endif /* _BFD_H_ */ |