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Commit | Line | Data |
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5adc2528 AS |
1 | /* |
2 | * Main implementation file for interface to Forwarding Plane Manager. | |
3 | * | |
4 | * Copyright (C) 2012 by Open Source Routing. | |
5 | * Copyright (C) 2012 by Internet Systems Consortium, Inc. ("ISC") | |
6 | * | |
7 | * This file is part of GNU Zebra. | |
8 | * | |
9 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2, or (at your option) any | |
12 | * later version. | |
13 | * | |
14 | * GNU Zebra is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
896014f4 DL |
19 | * You should have received a copy of the GNU General Public License along |
20 | * with this program; see the file COPYING; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
5adc2528 AS |
22 | */ |
23 | ||
24 | #include <zebra.h> | |
25 | ||
26 | #include "log.h" | |
4f8ea50c | 27 | #include "libfrr.h" |
5adc2528 AS |
28 | #include "stream.h" |
29 | #include "thread.h" | |
30 | #include "network.h" | |
31 | #include "command.h" | |
4f8ea50c | 32 | #include "version.h" |
5adc2528 AS |
33 | |
34 | #include "zebra/rib.h" | |
7c551956 DS |
35 | #include "zebra/zserv.h" |
36 | #include "zebra/zebra_ns.h" | |
37 | #include "zebra/zebra_vrf.h" | |
67aeb554 | 38 | #include "zebra/zebra_errors.h" |
5adc2528 AS |
39 | |
40 | #include "fpm/fpm.h" | |
5adc2528 AS |
41 | #include "zebra_fpm_private.h" |
42 | ||
43 | /* | |
44 | * Interval at which we attempt to connect to the FPM. | |
45 | */ | |
46 | #define ZFPM_CONNECT_RETRY_IVL 5 | |
47 | ||
48 | /* | |
49 | * Sizes of outgoing and incoming stream buffers for writing/reading | |
50 | * FPM messages. | |
51 | */ | |
52 | #define ZFPM_OBUF_SIZE (2 * FPM_MAX_MSG_LEN) | |
53 | #define ZFPM_IBUF_SIZE (FPM_MAX_MSG_LEN) | |
54 | ||
55 | /* | |
56 | * The maximum number of times the FPM socket write callback can call | |
57 | * 'write' before it yields. | |
58 | */ | |
59 | #define ZFPM_MAX_WRITES_PER_RUN 10 | |
60 | ||
61 | /* | |
62 | * Interval over which we collect statistics. | |
63 | */ | |
64 | #define ZFPM_STATS_IVL_SECS 10 | |
65 | ||
66 | /* | |
67 | * Structure that holds state for iterating over all route_node | |
68 | * structures that are candidates for being communicated to the FPM. | |
69 | */ | |
d62a17ae | 70 | typedef struct zfpm_rnodes_iter_t_ { |
71 | rib_tables_iter_t tables_iter; | |
72 | route_table_iter_t iter; | |
5adc2528 AS |
73 | } zfpm_rnodes_iter_t; |
74 | ||
75 | /* | |
76 | * Statistics. | |
77 | */ | |
78 | typedef struct zfpm_stats_t_ { | |
d62a17ae | 79 | unsigned long connect_calls; |
80 | unsigned long connect_no_sock; | |
5adc2528 | 81 | |
d62a17ae | 82 | unsigned long read_cb_calls; |
5adc2528 | 83 | |
d62a17ae | 84 | unsigned long write_cb_calls; |
85 | unsigned long write_calls; | |
86 | unsigned long partial_writes; | |
87 | unsigned long max_writes_hit; | |
88 | unsigned long t_write_yields; | |
5adc2528 | 89 | |
d62a17ae | 90 | unsigned long nop_deletes_skipped; |
91 | unsigned long route_adds; | |
92 | unsigned long route_dels; | |
5adc2528 | 93 | |
d62a17ae | 94 | unsigned long updates_triggered; |
95 | unsigned long redundant_triggers; | |
5adc2528 | 96 | |
d62a17ae | 97 | unsigned long dests_del_after_update; |
5adc2528 | 98 | |
d62a17ae | 99 | unsigned long t_conn_down_starts; |
100 | unsigned long t_conn_down_dests_processed; | |
101 | unsigned long t_conn_down_yields; | |
102 | unsigned long t_conn_down_finishes; | |
5adc2528 | 103 | |
d62a17ae | 104 | unsigned long t_conn_up_starts; |
105 | unsigned long t_conn_up_dests_processed; | |
106 | unsigned long t_conn_up_yields; | |
107 | unsigned long t_conn_up_aborts; | |
108 | unsigned long t_conn_up_finishes; | |
5adc2528 AS |
109 | |
110 | } zfpm_stats_t; | |
111 | ||
112 | /* | |
113 | * States for the FPM state machine. | |
114 | */ | |
115 | typedef enum { | |
116 | ||
d62a17ae | 117 | /* |
118 | * In this state we are not yet ready to connect to the FPM. This | |
119 | * can happen when this module is disabled, or if we're cleaning up | |
120 | * after a connection has gone down. | |
121 | */ | |
122 | ZFPM_STATE_IDLE, | |
123 | ||
124 | /* | |
125 | * Ready to talk to the FPM and periodically trying to connect to | |
126 | * it. | |
127 | */ | |
128 | ZFPM_STATE_ACTIVE, | |
129 | ||
130 | /* | |
131 | * In the middle of bringing up a TCP connection. Specifically, | |
132 | * waiting for a connect() call to complete asynchronously. | |
133 | */ | |
134 | ZFPM_STATE_CONNECTING, | |
135 | ||
136 | /* | |
137 | * TCP connection to the FPM is up. | |
138 | */ | |
139 | ZFPM_STATE_ESTABLISHED | |
5adc2528 AS |
140 | |
141 | } zfpm_state_t; | |
142 | ||
fb0aa886 AS |
143 | /* |
144 | * Message format to be used to communicate with the FPM. | |
145 | */ | |
d62a17ae | 146 | typedef enum { |
147 | ZFPM_MSG_FORMAT_NONE, | |
148 | ZFPM_MSG_FORMAT_NETLINK, | |
149 | ZFPM_MSG_FORMAT_PROTOBUF, | |
fb0aa886 | 150 | } zfpm_msg_format_e; |
5adc2528 AS |
151 | /* |
152 | * Globals. | |
153 | */ | |
d62a17ae | 154 | typedef struct zfpm_glob_t_ { |
155 | ||
156 | /* | |
157 | * True if the FPM module has been enabled. | |
158 | */ | |
159 | int enabled; | |
160 | ||
161 | /* | |
162 | * Message format to be used to communicate with the fpm. | |
163 | */ | |
164 | zfpm_msg_format_e message_format; | |
165 | ||
166 | struct thread_master *master; | |
167 | ||
168 | zfpm_state_t state; | |
169 | ||
170 | in_addr_t fpm_server; | |
171 | /* | |
172 | * Port on which the FPM is running. | |
173 | */ | |
174 | int fpm_port; | |
175 | ||
176 | /* | |
177 | * List of rib_dest_t structures to be processed | |
178 | */ | |
179 | TAILQ_HEAD(zfpm_dest_q, rib_dest_t_) dest_q; | |
180 | ||
181 | /* | |
182 | * Stream socket to the FPM. | |
183 | */ | |
184 | int sock; | |
185 | ||
186 | /* | |
187 | * Buffers for messages to/from the FPM. | |
188 | */ | |
189 | struct stream *obuf; | |
190 | struct stream *ibuf; | |
191 | ||
192 | /* | |
193 | * Threads for I/O. | |
194 | */ | |
195 | struct thread *t_connect; | |
196 | struct thread *t_write; | |
197 | struct thread *t_read; | |
198 | ||
199 | /* | |
200 | * Thread to clean up after the TCP connection to the FPM goes down | |
201 | * and the state that belongs to it. | |
202 | */ | |
203 | struct thread *t_conn_down; | |
204 | ||
205 | struct { | |
206 | zfpm_rnodes_iter_t iter; | |
207 | } t_conn_down_state; | |
208 | ||
209 | /* | |
210 | * Thread to take actions once the TCP conn to the FPM comes up, and | |
211 | * the state that belongs to it. | |
212 | */ | |
213 | struct thread *t_conn_up; | |
214 | ||
215 | struct { | |
216 | zfpm_rnodes_iter_t iter; | |
217 | } t_conn_up_state; | |
218 | ||
219 | unsigned long connect_calls; | |
220 | time_t last_connect_call_time; | |
221 | ||
222 | /* | |
223 | * Stats from the start of the current statistics interval up to | |
224 | * now. These are the counters we typically update in the code. | |
225 | */ | |
226 | zfpm_stats_t stats; | |
227 | ||
228 | /* | |
229 | * Statistics that were gathered in the last collection interval. | |
230 | */ | |
231 | zfpm_stats_t last_ivl_stats; | |
232 | ||
233 | /* | |
234 | * Cumulative stats from the last clear to the start of the current | |
235 | * statistics interval. | |
236 | */ | |
237 | zfpm_stats_t cumulative_stats; | |
238 | ||
239 | /* | |
240 | * Stats interval timer. | |
241 | */ | |
242 | struct thread *t_stats; | |
243 | ||
244 | /* | |
245 | * If non-zero, the last time when statistics were cleared. | |
246 | */ | |
247 | time_t last_stats_clear_time; | |
5adc2528 AS |
248 | |
249 | } zfpm_glob_t; | |
250 | ||
251 | static zfpm_glob_t zfpm_glob_space; | |
252 | static zfpm_glob_t *zfpm_g = &zfpm_glob_space; | |
253 | ||
d62a17ae | 254 | static int zfpm_trigger_update(struct route_node *rn, const char *reason); |
4f8ea50c | 255 | |
d62a17ae | 256 | static int zfpm_read_cb(struct thread *thread); |
257 | static int zfpm_write_cb(struct thread *thread); | |
5adc2528 | 258 | |
d62a17ae | 259 | static void zfpm_set_state(zfpm_state_t state, const char *reason); |
260 | static void zfpm_start_connect_timer(const char *reason); | |
261 | static void zfpm_start_stats_timer(void); | |
5adc2528 AS |
262 | |
263 | /* | |
264 | * zfpm_thread_should_yield | |
265 | */ | |
d62a17ae | 266 | static inline int zfpm_thread_should_yield(struct thread *t) |
5adc2528 | 267 | { |
d62a17ae | 268 | return thread_should_yield(t); |
5adc2528 AS |
269 | } |
270 | ||
271 | /* | |
272 | * zfpm_state_to_str | |
273 | */ | |
d62a17ae | 274 | static const char *zfpm_state_to_str(zfpm_state_t state) |
5adc2528 | 275 | { |
d62a17ae | 276 | switch (state) { |
5adc2528 | 277 | |
d62a17ae | 278 | case ZFPM_STATE_IDLE: |
279 | return "idle"; | |
5adc2528 | 280 | |
d62a17ae | 281 | case ZFPM_STATE_ACTIVE: |
282 | return "active"; | |
5adc2528 | 283 | |
d62a17ae | 284 | case ZFPM_STATE_CONNECTING: |
285 | return "connecting"; | |
5adc2528 | 286 | |
d62a17ae | 287 | case ZFPM_STATE_ESTABLISHED: |
288 | return "established"; | |
5adc2528 | 289 | |
d62a17ae | 290 | default: |
291 | return "unknown"; | |
292 | } | |
5adc2528 AS |
293 | } |
294 | ||
5adc2528 AS |
295 | /* |
296 | * zfpm_get_elapsed_time | |
297 | * | |
298 | * Returns the time elapsed (in seconds) since the given time. | |
299 | */ | |
d62a17ae | 300 | static time_t zfpm_get_elapsed_time(time_t reference) |
5adc2528 | 301 | { |
d62a17ae | 302 | time_t now; |
5adc2528 | 303 | |
d62a17ae | 304 | now = monotime(NULL); |
5adc2528 | 305 | |
d62a17ae | 306 | if (now < reference) { |
307 | assert(0); | |
308 | return 0; | |
309 | } | |
5adc2528 | 310 | |
d62a17ae | 311 | return now - reference; |
5adc2528 AS |
312 | } |
313 | ||
5adc2528 AS |
314 | /* |
315 | * zfpm_rnodes_iter_init | |
316 | */ | |
d62a17ae | 317 | static inline void zfpm_rnodes_iter_init(zfpm_rnodes_iter_t *iter) |
5adc2528 | 318 | { |
d62a17ae | 319 | memset(iter, 0, sizeof(*iter)); |
320 | rib_tables_iter_init(&iter->tables_iter); | |
321 | ||
322 | /* | |
323 | * This is a hack, but it makes implementing 'next' easier by | |
324 | * ensuring that route_table_iter_next() will return NULL the first | |
325 | * time we call it. | |
326 | */ | |
327 | route_table_iter_init(&iter->iter, NULL); | |
328 | route_table_iter_cleanup(&iter->iter); | |
5adc2528 AS |
329 | } |
330 | ||
331 | /* | |
332 | * zfpm_rnodes_iter_next | |
333 | */ | |
d62a17ae | 334 | static inline struct route_node *zfpm_rnodes_iter_next(zfpm_rnodes_iter_t *iter) |
5adc2528 | 335 | { |
d62a17ae | 336 | struct route_node *rn; |
337 | struct route_table *table; | |
5adc2528 | 338 | |
d62a17ae | 339 | while (1) { |
340 | rn = route_table_iter_next(&iter->iter); | |
341 | if (rn) | |
342 | return rn; | |
5adc2528 | 343 | |
d62a17ae | 344 | /* |
345 | * We've made our way through this table, go to the next one. | |
346 | */ | |
347 | route_table_iter_cleanup(&iter->iter); | |
5adc2528 | 348 | |
c6bbea17 | 349 | table = rib_tables_iter_next(&iter->tables_iter); |
5adc2528 | 350 | |
d62a17ae | 351 | if (!table) |
352 | return NULL; | |
5adc2528 | 353 | |
d62a17ae | 354 | route_table_iter_init(&iter->iter, table); |
355 | } | |
5adc2528 | 356 | |
d62a17ae | 357 | return NULL; |
5adc2528 AS |
358 | } |
359 | ||
360 | /* | |
361 | * zfpm_rnodes_iter_pause | |
362 | */ | |
d62a17ae | 363 | static inline void zfpm_rnodes_iter_pause(zfpm_rnodes_iter_t *iter) |
5adc2528 | 364 | { |
d62a17ae | 365 | route_table_iter_pause(&iter->iter); |
5adc2528 AS |
366 | } |
367 | ||
368 | /* | |
369 | * zfpm_rnodes_iter_cleanup | |
370 | */ | |
d62a17ae | 371 | static inline void zfpm_rnodes_iter_cleanup(zfpm_rnodes_iter_t *iter) |
5adc2528 | 372 | { |
d62a17ae | 373 | route_table_iter_cleanup(&iter->iter); |
374 | rib_tables_iter_cleanup(&iter->tables_iter); | |
5adc2528 AS |
375 | } |
376 | ||
377 | /* | |
378 | * zfpm_stats_init | |
379 | * | |
380 | * Initialize a statistics block. | |
381 | */ | |
d62a17ae | 382 | static inline void zfpm_stats_init(zfpm_stats_t *stats) |
5adc2528 | 383 | { |
d62a17ae | 384 | memset(stats, 0, sizeof(*stats)); |
5adc2528 AS |
385 | } |
386 | ||
387 | /* | |
388 | * zfpm_stats_reset | |
389 | */ | |
d62a17ae | 390 | static inline void zfpm_stats_reset(zfpm_stats_t *stats) |
5adc2528 | 391 | { |
d62a17ae | 392 | zfpm_stats_init(stats); |
5adc2528 AS |
393 | } |
394 | ||
395 | /* | |
396 | * zfpm_stats_copy | |
397 | */ | |
d62a17ae | 398 | static inline void zfpm_stats_copy(const zfpm_stats_t *src, zfpm_stats_t *dest) |
5adc2528 | 399 | { |
d62a17ae | 400 | memcpy(dest, src, sizeof(*dest)); |
5adc2528 AS |
401 | } |
402 | ||
403 | /* | |
404 | * zfpm_stats_compose | |
405 | * | |
406 | * Total up the statistics in two stats structures ('s1 and 's2') and | |
407 | * return the result in the third argument, 'result'. Note that the | |
408 | * pointer 'result' may be the same as 's1' or 's2'. | |
409 | * | |
410 | * For simplicity, the implementation below assumes that the stats | |
411 | * structure is composed entirely of counters. This can easily be | |
412 | * changed when necessary. | |
413 | */ | |
d62a17ae | 414 | static void zfpm_stats_compose(const zfpm_stats_t *s1, const zfpm_stats_t *s2, |
415 | zfpm_stats_t *result) | |
5adc2528 | 416 | { |
d62a17ae | 417 | const unsigned long *p1, *p2; |
418 | unsigned long *result_p; | |
419 | int i, num_counters; | |
5adc2528 | 420 | |
d62a17ae | 421 | p1 = (const unsigned long *)s1; |
422 | p2 = (const unsigned long *)s2; | |
423 | result_p = (unsigned long *)result; | |
5adc2528 | 424 | |
d62a17ae | 425 | num_counters = (sizeof(zfpm_stats_t) / sizeof(unsigned long)); |
5adc2528 | 426 | |
d62a17ae | 427 | for (i = 0; i < num_counters; i++) { |
428 | result_p[i] = p1[i] + p2[i]; | |
429 | } | |
5adc2528 AS |
430 | } |
431 | ||
432 | /* | |
433 | * zfpm_read_on | |
434 | */ | |
d62a17ae | 435 | static inline void zfpm_read_on(void) |
5adc2528 | 436 | { |
d62a17ae | 437 | assert(!zfpm_g->t_read); |
438 | assert(zfpm_g->sock >= 0); | |
5adc2528 | 439 | |
d62a17ae | 440 | thread_add_read(zfpm_g->master, zfpm_read_cb, 0, zfpm_g->sock, |
441 | &zfpm_g->t_read); | |
5adc2528 AS |
442 | } |
443 | ||
444 | /* | |
445 | * zfpm_write_on | |
446 | */ | |
d62a17ae | 447 | static inline void zfpm_write_on(void) |
5adc2528 | 448 | { |
d62a17ae | 449 | assert(!zfpm_g->t_write); |
450 | assert(zfpm_g->sock >= 0); | |
5adc2528 | 451 | |
d62a17ae | 452 | thread_add_write(zfpm_g->master, zfpm_write_cb, 0, zfpm_g->sock, |
453 | &zfpm_g->t_write); | |
5adc2528 AS |
454 | } |
455 | ||
456 | /* | |
457 | * zfpm_read_off | |
458 | */ | |
d62a17ae | 459 | static inline void zfpm_read_off(void) |
5adc2528 | 460 | { |
d62a17ae | 461 | THREAD_READ_OFF(zfpm_g->t_read); |
5adc2528 AS |
462 | } |
463 | ||
464 | /* | |
465 | * zfpm_write_off | |
466 | */ | |
d62a17ae | 467 | static inline void zfpm_write_off(void) |
5adc2528 | 468 | { |
d62a17ae | 469 | THREAD_WRITE_OFF(zfpm_g->t_write); |
5adc2528 AS |
470 | } |
471 | ||
472 | /* | |
473 | * zfpm_conn_up_thread_cb | |
474 | * | |
475 | * Callback for actions to be taken when the connection to the FPM | |
476 | * comes up. | |
477 | */ | |
d62a17ae | 478 | static int zfpm_conn_up_thread_cb(struct thread *thread) |
5adc2528 | 479 | { |
d62a17ae | 480 | struct route_node *rnode; |
481 | zfpm_rnodes_iter_t *iter; | |
482 | rib_dest_t *dest; | |
5adc2528 | 483 | |
d62a17ae | 484 | zfpm_g->t_conn_up = NULL; |
5adc2528 | 485 | |
d62a17ae | 486 | iter = &zfpm_g->t_conn_up_state.iter; |
5adc2528 | 487 | |
d62a17ae | 488 | if (zfpm_g->state != ZFPM_STATE_ESTABLISHED) { |
489 | zfpm_debug( | |
490 | "Connection not up anymore, conn_up thread aborting"); | |
491 | zfpm_g->stats.t_conn_up_aborts++; | |
492 | goto done; | |
493 | } | |
5adc2528 | 494 | |
d62a17ae | 495 | while ((rnode = zfpm_rnodes_iter_next(iter))) { |
496 | dest = rib_dest_from_rnode(rnode); | |
497 | ||
498 | if (dest) { | |
499 | zfpm_g->stats.t_conn_up_dests_processed++; | |
500 | zfpm_trigger_update(rnode, NULL); | |
501 | } | |
502 | ||
503 | /* | |
504 | * Yield if need be. | |
505 | */ | |
506 | if (!zfpm_thread_should_yield(thread)) | |
507 | continue; | |
508 | ||
509 | zfpm_g->stats.t_conn_up_yields++; | |
510 | zfpm_rnodes_iter_pause(iter); | |
511 | zfpm_g->t_conn_up = NULL; | |
512 | thread_add_timer_msec(zfpm_g->master, zfpm_conn_up_thread_cb, | |
513 | NULL, 0, &zfpm_g->t_conn_up); | |
514 | return 0; | |
5adc2528 AS |
515 | } |
516 | ||
d62a17ae | 517 | zfpm_g->stats.t_conn_up_finishes++; |
518 | ||
519 | done: | |
520 | zfpm_rnodes_iter_cleanup(iter); | |
521 | return 0; | |
5adc2528 AS |
522 | } |
523 | ||
524 | /* | |
525 | * zfpm_connection_up | |
526 | * | |
527 | * Called when the connection to the FPM comes up. | |
528 | */ | |
d62a17ae | 529 | static void zfpm_connection_up(const char *detail) |
5adc2528 | 530 | { |
d62a17ae | 531 | assert(zfpm_g->sock >= 0); |
532 | zfpm_read_on(); | |
533 | zfpm_write_on(); | |
534 | zfpm_set_state(ZFPM_STATE_ESTABLISHED, detail); | |
535 | ||
536 | /* | |
537 | * Start thread to push existing routes to the FPM. | |
538 | */ | |
539 | assert(!zfpm_g->t_conn_up); | |
540 | ||
541 | zfpm_rnodes_iter_init(&zfpm_g->t_conn_up_state.iter); | |
542 | ||
543 | zfpm_debug("Starting conn_up thread"); | |
544 | zfpm_g->t_conn_up = NULL; | |
545 | thread_add_timer_msec(zfpm_g->master, zfpm_conn_up_thread_cb, NULL, 0, | |
546 | &zfpm_g->t_conn_up); | |
547 | zfpm_g->stats.t_conn_up_starts++; | |
5adc2528 AS |
548 | } |
549 | ||
550 | /* | |
551 | * zfpm_connect_check | |
552 | * | |
553 | * Check if an asynchronous connect() to the FPM is complete. | |
554 | */ | |
d62a17ae | 555 | static void zfpm_connect_check(void) |
5adc2528 | 556 | { |
d62a17ae | 557 | int status; |
558 | socklen_t slen; | |
559 | int ret; | |
560 | ||
561 | zfpm_read_off(); | |
562 | zfpm_write_off(); | |
563 | ||
564 | slen = sizeof(status); | |
565 | ret = getsockopt(zfpm_g->sock, SOL_SOCKET, SO_ERROR, (void *)&status, | |
566 | &slen); | |
567 | ||
568 | if (ret >= 0 && status == 0) { | |
569 | zfpm_connection_up("async connect complete"); | |
570 | return; | |
571 | } | |
572 | ||
573 | /* | |
574 | * getsockopt() failed or indicated an error on the socket. | |
575 | */ | |
576 | close(zfpm_g->sock); | |
577 | zfpm_g->sock = -1; | |
578 | ||
579 | zfpm_start_connect_timer("getsockopt() after async connect failed"); | |
580 | return; | |
5adc2528 AS |
581 | } |
582 | ||
583 | /* | |
584 | * zfpm_conn_down_thread_cb | |
585 | * | |
586 | * Callback that is invoked to clean up state after the TCP connection | |
587 | * to the FPM goes down. | |
588 | */ | |
d62a17ae | 589 | static int zfpm_conn_down_thread_cb(struct thread *thread) |
5adc2528 | 590 | { |
d62a17ae | 591 | struct route_node *rnode; |
592 | zfpm_rnodes_iter_t *iter; | |
593 | rib_dest_t *dest; | |
5adc2528 | 594 | |
d62a17ae | 595 | assert(zfpm_g->state == ZFPM_STATE_IDLE); |
5adc2528 | 596 | |
d62a17ae | 597 | zfpm_g->t_conn_down = NULL; |
5adc2528 | 598 | |
d62a17ae | 599 | iter = &zfpm_g->t_conn_down_state.iter; |
5adc2528 | 600 | |
d62a17ae | 601 | while ((rnode = zfpm_rnodes_iter_next(iter))) { |
602 | dest = rib_dest_from_rnode(rnode); | |
5adc2528 | 603 | |
d62a17ae | 604 | if (dest) { |
605 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)) { | |
606 | TAILQ_REMOVE(&zfpm_g->dest_q, dest, | |
607 | fpm_q_entries); | |
608 | } | |
609 | ||
610 | UNSET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
611 | UNSET_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM); | |
5adc2528 | 612 | |
d62a17ae | 613 | zfpm_g->stats.t_conn_down_dests_processed++; |
5adc2528 | 614 | |
d62a17ae | 615 | /* |
616 | * Check if the dest should be deleted. | |
617 | */ | |
618 | rib_gc_dest(rnode); | |
619 | } | |
5adc2528 | 620 | |
d62a17ae | 621 | /* |
622 | * Yield if need be. | |
623 | */ | |
624 | if (!zfpm_thread_should_yield(thread)) | |
625 | continue; | |
626 | ||
627 | zfpm_g->stats.t_conn_down_yields++; | |
628 | zfpm_rnodes_iter_pause(iter); | |
629 | zfpm_g->t_conn_down = NULL; | |
630 | thread_add_timer_msec(zfpm_g->master, zfpm_conn_down_thread_cb, | |
631 | NULL, 0, &zfpm_g->t_conn_down); | |
632 | return 0; | |
5adc2528 AS |
633 | } |
634 | ||
d62a17ae | 635 | zfpm_g->stats.t_conn_down_finishes++; |
636 | zfpm_rnodes_iter_cleanup(iter); | |
637 | ||
638 | /* | |
639 | * Start the process of connecting to the FPM again. | |
640 | */ | |
641 | zfpm_start_connect_timer("cleanup complete"); | |
642 | return 0; | |
5adc2528 AS |
643 | } |
644 | ||
645 | /* | |
646 | * zfpm_connection_down | |
647 | * | |
648 | * Called when the connection to the FPM has gone down. | |
649 | */ | |
d62a17ae | 650 | static void zfpm_connection_down(const char *detail) |
5adc2528 | 651 | { |
d62a17ae | 652 | if (!detail) |
653 | detail = "unknown"; | |
5adc2528 | 654 | |
d62a17ae | 655 | assert(zfpm_g->state == ZFPM_STATE_ESTABLISHED); |
5adc2528 | 656 | |
d62a17ae | 657 | zlog_info("connection to the FPM has gone down: %s", detail); |
5adc2528 | 658 | |
d62a17ae | 659 | zfpm_read_off(); |
660 | zfpm_write_off(); | |
5adc2528 | 661 | |
d62a17ae | 662 | stream_reset(zfpm_g->ibuf); |
663 | stream_reset(zfpm_g->obuf); | |
5adc2528 | 664 | |
d62a17ae | 665 | if (zfpm_g->sock >= 0) { |
666 | close(zfpm_g->sock); | |
667 | zfpm_g->sock = -1; | |
668 | } | |
5adc2528 | 669 | |
d62a17ae | 670 | /* |
671 | * Start thread to clean up state after the connection goes down. | |
672 | */ | |
673 | assert(!zfpm_g->t_conn_down); | |
674 | zfpm_debug("Starting conn_down thread"); | |
675 | zfpm_rnodes_iter_init(&zfpm_g->t_conn_down_state.iter); | |
676 | zfpm_g->t_conn_down = NULL; | |
677 | thread_add_timer_msec(zfpm_g->master, zfpm_conn_down_thread_cb, NULL, 0, | |
678 | &zfpm_g->t_conn_down); | |
679 | zfpm_g->stats.t_conn_down_starts++; | |
680 | ||
681 | zfpm_set_state(ZFPM_STATE_IDLE, detail); | |
5adc2528 AS |
682 | } |
683 | ||
684 | /* | |
685 | * zfpm_read_cb | |
686 | */ | |
d62a17ae | 687 | static int zfpm_read_cb(struct thread *thread) |
5adc2528 | 688 | { |
d62a17ae | 689 | size_t already; |
690 | struct stream *ibuf; | |
691 | uint16_t msg_len; | |
692 | fpm_msg_hdr_t *hdr; | |
693 | ||
694 | zfpm_g->stats.read_cb_calls++; | |
695 | zfpm_g->t_read = NULL; | |
696 | ||
697 | /* | |
698 | * Check if async connect is now done. | |
699 | */ | |
700 | if (zfpm_g->state == ZFPM_STATE_CONNECTING) { | |
701 | zfpm_connect_check(); | |
702 | return 0; | |
5adc2528 AS |
703 | } |
704 | ||
d62a17ae | 705 | assert(zfpm_g->state == ZFPM_STATE_ESTABLISHED); |
706 | assert(zfpm_g->sock >= 0); | |
5adc2528 | 707 | |
d62a17ae | 708 | ibuf = zfpm_g->ibuf; |
5adc2528 | 709 | |
d62a17ae | 710 | already = stream_get_endp(ibuf); |
711 | if (already < FPM_MSG_HDR_LEN) { | |
712 | ssize_t nbyte; | |
5adc2528 | 713 | |
d62a17ae | 714 | nbyte = stream_read_try(ibuf, zfpm_g->sock, |
715 | FPM_MSG_HDR_LEN - already); | |
716 | if (nbyte == 0 || nbyte == -1) { | |
677f704d DS |
717 | if (nbyte == -1) { |
718 | char buffer[1024]; | |
719 | ||
720 | sprintf(buffer, "closed socket in read(%d): %s", | |
721 | errno, safe_strerror(errno)); | |
722 | zfpm_connection_down(buffer); | |
996c9314 | 723 | } else |
677f704d | 724 | zfpm_connection_down("closed socket in read"); |
d62a17ae | 725 | return 0; |
726 | } | |
5adc2528 | 727 | |
d62a17ae | 728 | if (nbyte != (ssize_t)(FPM_MSG_HDR_LEN - already)) |
729 | goto done; | |
5adc2528 | 730 | |
d62a17ae | 731 | already = FPM_MSG_HDR_LEN; |
732 | } | |
5adc2528 | 733 | |
d62a17ae | 734 | stream_set_getp(ibuf, 0); |
5adc2528 | 735 | |
d62a17ae | 736 | hdr = (fpm_msg_hdr_t *)stream_pnt(ibuf); |
5adc2528 | 737 | |
d62a17ae | 738 | if (!fpm_msg_hdr_ok(hdr)) { |
739 | zfpm_connection_down("invalid message header"); | |
740 | return 0; | |
5adc2528 AS |
741 | } |
742 | ||
d62a17ae | 743 | msg_len = fpm_msg_len(hdr); |
5adc2528 | 744 | |
d62a17ae | 745 | /* |
746 | * Read out the rest of the packet. | |
747 | */ | |
748 | if (already < msg_len) { | |
749 | ssize_t nbyte; | |
5adc2528 | 750 | |
d62a17ae | 751 | nbyte = stream_read_try(ibuf, zfpm_g->sock, msg_len - already); |
5adc2528 | 752 | |
d62a17ae | 753 | if (nbyte == 0 || nbyte == -1) { |
677f704d DS |
754 | if (nbyte == -1) { |
755 | char buffer[1024]; | |
756 | ||
757 | sprintf(buffer, "failed to read message(%d) %s", | |
758 | errno, safe_strerror(errno)); | |
759 | zfpm_connection_down(buffer); | |
996c9314 | 760 | } else |
677f704d | 761 | zfpm_connection_down("failed to read message"); |
d62a17ae | 762 | return 0; |
763 | } | |
764 | ||
765 | if (nbyte != (ssize_t)(msg_len - already)) | |
766 | goto done; | |
767 | } | |
768 | ||
769 | zfpm_debug("Read out a full fpm message"); | |
770 | ||
771 | /* | |
772 | * Just throw it away for now. | |
773 | */ | |
774 | stream_reset(ibuf); | |
775 | ||
776 | done: | |
777 | zfpm_read_on(); | |
778 | return 0; | |
5adc2528 AS |
779 | } |
780 | ||
781 | /* | |
782 | * zfpm_writes_pending | |
783 | * | |
784 | * Returns TRUE if we may have something to write to the FPM. | |
785 | */ | |
d62a17ae | 786 | static int zfpm_writes_pending(void) |
5adc2528 AS |
787 | { |
788 | ||
d62a17ae | 789 | /* |
790 | * Check if there is any data in the outbound buffer that has not | |
791 | * been written to the socket yet. | |
792 | */ | |
793 | if (stream_get_endp(zfpm_g->obuf) - stream_get_getp(zfpm_g->obuf)) | |
794 | return 1; | |
5adc2528 | 795 | |
d62a17ae | 796 | /* |
797 | * Check if there are any prefixes on the outbound queue. | |
798 | */ | |
799 | if (!TAILQ_EMPTY(&zfpm_g->dest_q)) | |
800 | return 1; | |
5adc2528 | 801 | |
d62a17ae | 802 | return 0; |
5adc2528 AS |
803 | } |
804 | ||
805 | /* | |
806 | * zfpm_encode_route | |
807 | * | |
808 | * Encode a message to the FPM with information about the given route. | |
809 | * | |
810 | * Returns the number of bytes written to the buffer. 0 or a negative | |
811 | * value indicates an error. | |
812 | */ | |
d62a17ae | 813 | static inline int zfpm_encode_route(rib_dest_t *dest, struct route_entry *re, |
814 | char *in_buf, size_t in_buf_len, | |
815 | fpm_msg_type_e *msg_type) | |
5adc2528 | 816 | { |
d62a17ae | 817 | size_t len; |
9bf75362 | 818 | #ifdef HAVE_NETLINK |
d62a17ae | 819 | int cmd; |
9bf75362 | 820 | #endif |
d62a17ae | 821 | len = 0; |
5adc2528 | 822 | |
d62a17ae | 823 | *msg_type = FPM_MSG_TYPE_NONE; |
5adc2528 | 824 | |
d62a17ae | 825 | switch (zfpm_g->message_format) { |
5adc2528 | 826 | |
d62a17ae | 827 | case ZFPM_MSG_FORMAT_PROTOBUF: |
fb0aa886 | 828 | #ifdef HAVE_PROTOBUF |
d62a17ae | 829 | len = zfpm_protobuf_encode_route(dest, re, (uint8_t *)in_buf, |
830 | in_buf_len); | |
831 | *msg_type = FPM_MSG_TYPE_PROTOBUF; | |
fb0aa886 | 832 | #endif |
d62a17ae | 833 | break; |
5adc2528 | 834 | |
d62a17ae | 835 | case ZFPM_MSG_FORMAT_NETLINK: |
fb0aa886 | 836 | #ifdef HAVE_NETLINK |
d62a17ae | 837 | *msg_type = FPM_MSG_TYPE_NETLINK; |
838 | cmd = re ? RTM_NEWROUTE : RTM_DELROUTE; | |
839 | len = zfpm_netlink_encode_route(cmd, dest, re, in_buf, | |
840 | in_buf_len); | |
841 | assert(fpm_msg_align(len) == len); | |
842 | *msg_type = FPM_MSG_TYPE_NETLINK; | |
5adc2528 | 843 | #endif /* HAVE_NETLINK */ |
d62a17ae | 844 | break; |
fb0aa886 | 845 | |
d62a17ae | 846 | default: |
847 | break; | |
848 | } | |
fb0aa886 | 849 | |
d62a17ae | 850 | return len; |
5adc2528 AS |
851 | } |
852 | ||
853 | /* | |
854 | * zfpm_route_for_update | |
855 | * | |
f0f77c9a | 856 | * Returns the re that is to be sent to the FPM for a given dest. |
5adc2528 | 857 | */ |
d62a17ae | 858 | struct route_entry *zfpm_route_for_update(rib_dest_t *dest) |
5adc2528 | 859 | { |
5f7a4718 | 860 | return dest->selected_fib; |
5adc2528 AS |
861 | } |
862 | ||
863 | /* | |
864 | * zfpm_build_updates | |
865 | * | |
866 | * Process the outgoing queue and write messages to the outbound | |
867 | * buffer. | |
868 | */ | |
d62a17ae | 869 | static void zfpm_build_updates(void) |
5adc2528 | 870 | { |
d62a17ae | 871 | struct stream *s; |
872 | rib_dest_t *dest; | |
873 | unsigned char *buf, *data, *buf_end; | |
874 | size_t msg_len; | |
875 | size_t data_len; | |
876 | fpm_msg_hdr_t *hdr; | |
877 | struct route_entry *re; | |
878 | int is_add, write_msg; | |
879 | fpm_msg_type_e msg_type; | |
880 | ||
881 | s = zfpm_g->obuf; | |
882 | ||
883 | assert(stream_empty(s)); | |
884 | ||
885 | do { | |
886 | ||
887 | /* | |
888 | * Make sure there is enough space to write another message. | |
889 | */ | |
890 | if (STREAM_WRITEABLE(s) < FPM_MAX_MSG_LEN) | |
891 | break; | |
892 | ||
893 | buf = STREAM_DATA(s) + stream_get_endp(s); | |
894 | buf_end = buf + STREAM_WRITEABLE(s); | |
895 | ||
896 | dest = TAILQ_FIRST(&zfpm_g->dest_q); | |
897 | if (!dest) | |
898 | break; | |
899 | ||
900 | assert(CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)); | |
901 | ||
902 | hdr = (fpm_msg_hdr_t *)buf; | |
903 | hdr->version = FPM_PROTO_VERSION; | |
904 | ||
905 | data = fpm_msg_data(hdr); | |
906 | ||
907 | re = zfpm_route_for_update(dest); | |
908 | is_add = re ? 1 : 0; | |
909 | ||
910 | write_msg = 1; | |
911 | ||
912 | /* | |
913 | * If this is a route deletion, and we have not sent the route | |
914 | * to | |
915 | * the FPM previously, skip it. | |
916 | */ | |
917 | if (!is_add && !CHECK_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM)) { | |
918 | write_msg = 0; | |
919 | zfpm_g->stats.nop_deletes_skipped++; | |
920 | } | |
921 | ||
922 | if (write_msg) { | |
923 | data_len = zfpm_encode_route(dest, re, (char *)data, | |
924 | buf_end - data, &msg_type); | |
925 | ||
926 | assert(data_len); | |
927 | if (data_len) { | |
928 | hdr->msg_type = msg_type; | |
929 | msg_len = fpm_data_len_to_msg_len(data_len); | |
930 | hdr->msg_len = htons(msg_len); | |
931 | stream_forward_endp(s, msg_len); | |
932 | ||
933 | if (is_add) | |
934 | zfpm_g->stats.route_adds++; | |
935 | else | |
936 | zfpm_g->stats.route_dels++; | |
937 | } | |
938 | } | |
939 | ||
940 | /* | |
941 | * Remove the dest from the queue, and reset the flag. | |
942 | */ | |
943 | UNSET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
944 | TAILQ_REMOVE(&zfpm_g->dest_q, dest, fpm_q_entries); | |
945 | ||
946 | if (is_add) { | |
947 | SET_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM); | |
948 | } else { | |
949 | UNSET_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM); | |
950 | } | |
951 | ||
952 | /* | |
953 | * Delete the destination if necessary. | |
954 | */ | |
955 | if (rib_gc_dest(dest->rnode)) | |
956 | zfpm_g->stats.dests_del_after_update++; | |
957 | ||
958 | } while (1); | |
5adc2528 AS |
959 | } |
960 | ||
961 | /* | |
962 | * zfpm_write_cb | |
963 | */ | |
d62a17ae | 964 | static int zfpm_write_cb(struct thread *thread) |
5adc2528 | 965 | { |
d62a17ae | 966 | struct stream *s; |
967 | int num_writes; | |
968 | ||
969 | zfpm_g->stats.write_cb_calls++; | |
970 | zfpm_g->t_write = NULL; | |
971 | ||
972 | /* | |
973 | * Check if async connect is now done. | |
974 | */ | |
975 | if (zfpm_g->state == ZFPM_STATE_CONNECTING) { | |
976 | zfpm_connect_check(); | |
977 | return 0; | |
978 | } | |
5adc2528 | 979 | |
d62a17ae | 980 | assert(zfpm_g->state == ZFPM_STATE_ESTABLISHED); |
981 | assert(zfpm_g->sock >= 0); | |
5adc2528 | 982 | |
d62a17ae | 983 | num_writes = 0; |
5adc2528 | 984 | |
d62a17ae | 985 | do { |
986 | int bytes_to_write, bytes_written; | |
5adc2528 | 987 | |
d62a17ae | 988 | s = zfpm_g->obuf; |
5adc2528 | 989 | |
d62a17ae | 990 | /* |
991 | * If the stream is empty, try fill it up with data. | |
992 | */ | |
993 | if (stream_empty(s)) { | |
994 | zfpm_build_updates(); | |
995 | } | |
5adc2528 | 996 | |
d62a17ae | 997 | bytes_to_write = stream_get_endp(s) - stream_get_getp(s); |
998 | if (!bytes_to_write) | |
999 | break; | |
5adc2528 | 1000 | |
d62a17ae | 1001 | bytes_written = |
2d34fb80 | 1002 | write(zfpm_g->sock, stream_pnt(s), bytes_to_write); |
d62a17ae | 1003 | zfpm_g->stats.write_calls++; |
1004 | num_writes++; | |
5adc2528 | 1005 | |
d62a17ae | 1006 | if (bytes_written < 0) { |
1007 | if (ERRNO_IO_RETRY(errno)) | |
1008 | break; | |
5adc2528 | 1009 | |
d62a17ae | 1010 | zfpm_connection_down("failed to write to socket"); |
1011 | return 0; | |
1012 | } | |
5adc2528 | 1013 | |
d62a17ae | 1014 | if (bytes_written != bytes_to_write) { |
5adc2528 | 1015 | |
d62a17ae | 1016 | /* |
1017 | * Partial write. | |
1018 | */ | |
1019 | stream_forward_getp(s, bytes_written); | |
1020 | zfpm_g->stats.partial_writes++; | |
1021 | break; | |
1022 | } | |
5adc2528 | 1023 | |
d62a17ae | 1024 | /* |
1025 | * We've written out the entire contents of the stream. | |
1026 | */ | |
1027 | stream_reset(s); | |
5adc2528 | 1028 | |
d62a17ae | 1029 | if (num_writes >= ZFPM_MAX_WRITES_PER_RUN) { |
1030 | zfpm_g->stats.max_writes_hit++; | |
1031 | break; | |
1032 | } | |
5adc2528 | 1033 | |
d62a17ae | 1034 | if (zfpm_thread_should_yield(thread)) { |
1035 | zfpm_g->stats.t_write_yields++; | |
1036 | break; | |
1037 | } | |
1038 | } while (1); | |
5adc2528 | 1039 | |
d62a17ae | 1040 | if (zfpm_writes_pending()) |
1041 | zfpm_write_on(); | |
5adc2528 | 1042 | |
d62a17ae | 1043 | return 0; |
5adc2528 AS |
1044 | } |
1045 | ||
1046 | /* | |
1047 | * zfpm_connect_cb | |
1048 | */ | |
d62a17ae | 1049 | static int zfpm_connect_cb(struct thread *t) |
5adc2528 | 1050 | { |
d62a17ae | 1051 | int sock, ret; |
1052 | struct sockaddr_in serv; | |
1053 | ||
1054 | zfpm_g->t_connect = NULL; | |
1055 | assert(zfpm_g->state == ZFPM_STATE_ACTIVE); | |
1056 | ||
1057 | sock = socket(AF_INET, SOCK_STREAM, 0); | |
1058 | if (sock < 0) { | |
1059 | zfpm_debug("Failed to create socket for connect(): %s", | |
1060 | strerror(errno)); | |
1061 | zfpm_g->stats.connect_no_sock++; | |
1062 | return 0; | |
1063 | } | |
1064 | ||
1065 | set_nonblocking(sock); | |
1066 | ||
1067 | /* Make server socket. */ | |
1068 | memset(&serv, 0, sizeof(serv)); | |
1069 | serv.sin_family = AF_INET; | |
1070 | serv.sin_port = htons(zfpm_g->fpm_port); | |
5adc2528 | 1071 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 1072 | serv.sin_len = sizeof(struct sockaddr_in); |
5adc2528 | 1073 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
d62a17ae | 1074 | if (!zfpm_g->fpm_server) |
1075 | serv.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1076 | else | |
1077 | serv.sin_addr.s_addr = (zfpm_g->fpm_server); | |
1078 | ||
1079 | /* | |
1080 | * Connect to the FPM. | |
1081 | */ | |
1082 | zfpm_g->connect_calls++; | |
1083 | zfpm_g->stats.connect_calls++; | |
1084 | zfpm_g->last_connect_call_time = monotime(NULL); | |
1085 | ||
1086 | ret = connect(sock, (struct sockaddr *)&serv, sizeof(serv)); | |
1087 | if (ret >= 0) { | |
1088 | zfpm_g->sock = sock; | |
1089 | zfpm_connection_up("connect succeeded"); | |
1090 | return 1; | |
1091 | } | |
1092 | ||
1093 | if (errno == EINPROGRESS) { | |
1094 | zfpm_g->sock = sock; | |
1095 | zfpm_read_on(); | |
1096 | zfpm_write_on(); | |
1097 | zfpm_set_state(ZFPM_STATE_CONNECTING, | |
1098 | "async connect in progress"); | |
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | zlog_info("can't connect to FPM %d: %s", sock, safe_strerror(errno)); | |
1103 | close(sock); | |
1104 | ||
1105 | /* | |
1106 | * Restart timer for retrying connection. | |
1107 | */ | |
1108 | zfpm_start_connect_timer("connect() failed"); | |
1109 | return 0; | |
5adc2528 AS |
1110 | } |
1111 | ||
1112 | /* | |
1113 | * zfpm_set_state | |
1114 | * | |
1115 | * Move state machine into the given state. | |
1116 | */ | |
d62a17ae | 1117 | static void zfpm_set_state(zfpm_state_t state, const char *reason) |
5adc2528 | 1118 | { |
d62a17ae | 1119 | zfpm_state_t cur_state = zfpm_g->state; |
1120 | ||
1121 | if (!reason) | |
1122 | reason = "Unknown"; | |
1123 | ||
1124 | if (state == cur_state) | |
1125 | return; | |
1126 | ||
1127 | zfpm_debug("beginning state transition %s -> %s. Reason: %s", | |
1128 | zfpm_state_to_str(cur_state), zfpm_state_to_str(state), | |
1129 | reason); | |
1130 | ||
1131 | switch (state) { | |
1132 | ||
1133 | case ZFPM_STATE_IDLE: | |
1134 | assert(cur_state == ZFPM_STATE_ESTABLISHED); | |
1135 | break; | |
1136 | ||
1137 | case ZFPM_STATE_ACTIVE: | |
1138 | assert(cur_state == ZFPM_STATE_IDLE | |
1139 | || cur_state == ZFPM_STATE_CONNECTING); | |
1140 | assert(zfpm_g->t_connect); | |
1141 | break; | |
1142 | ||
1143 | case ZFPM_STATE_CONNECTING: | |
1144 | assert(zfpm_g->sock); | |
1145 | assert(cur_state == ZFPM_STATE_ACTIVE); | |
1146 | assert(zfpm_g->t_read); | |
1147 | assert(zfpm_g->t_write); | |
1148 | break; | |
1149 | ||
1150 | case ZFPM_STATE_ESTABLISHED: | |
1151 | assert(cur_state == ZFPM_STATE_ACTIVE | |
1152 | || cur_state == ZFPM_STATE_CONNECTING); | |
1153 | assert(zfpm_g->sock); | |
1154 | assert(zfpm_g->t_read); | |
1155 | assert(zfpm_g->t_write); | |
1156 | break; | |
1157 | } | |
1158 | ||
1159 | zfpm_g->state = state; | |
5adc2528 AS |
1160 | } |
1161 | ||
1162 | /* | |
1163 | * zfpm_calc_connect_delay | |
1164 | * | |
1165 | * Returns the number of seconds after which we should attempt to | |
1166 | * reconnect to the FPM. | |
1167 | */ | |
d62a17ae | 1168 | static long zfpm_calc_connect_delay(void) |
5adc2528 | 1169 | { |
d62a17ae | 1170 | time_t elapsed; |
5adc2528 | 1171 | |
d62a17ae | 1172 | /* |
1173 | * Return 0 if this is our first attempt to connect. | |
1174 | */ | |
1175 | if (zfpm_g->connect_calls == 0) { | |
1176 | return 0; | |
1177 | } | |
5adc2528 | 1178 | |
d62a17ae | 1179 | elapsed = zfpm_get_elapsed_time(zfpm_g->last_connect_call_time); |
5adc2528 | 1180 | |
d62a17ae | 1181 | if (elapsed > ZFPM_CONNECT_RETRY_IVL) { |
1182 | return 0; | |
1183 | } | |
5adc2528 | 1184 | |
d62a17ae | 1185 | return ZFPM_CONNECT_RETRY_IVL - elapsed; |
5adc2528 AS |
1186 | } |
1187 | ||
1188 | /* | |
1189 | * zfpm_start_connect_timer | |
1190 | */ | |
d62a17ae | 1191 | static void zfpm_start_connect_timer(const char *reason) |
5adc2528 | 1192 | { |
d62a17ae | 1193 | long delay_secs; |
5adc2528 | 1194 | |
d62a17ae | 1195 | assert(!zfpm_g->t_connect); |
1196 | assert(zfpm_g->sock < 0); | |
5adc2528 | 1197 | |
d62a17ae | 1198 | assert(zfpm_g->state == ZFPM_STATE_IDLE |
1199 | || zfpm_g->state == ZFPM_STATE_ACTIVE | |
1200 | || zfpm_g->state == ZFPM_STATE_CONNECTING); | |
5adc2528 | 1201 | |
d62a17ae | 1202 | delay_secs = zfpm_calc_connect_delay(); |
1203 | zfpm_debug("scheduling connect in %ld seconds", delay_secs); | |
5adc2528 | 1204 | |
d62a17ae | 1205 | thread_add_timer(zfpm_g->master, zfpm_connect_cb, 0, delay_secs, |
1206 | &zfpm_g->t_connect); | |
1207 | zfpm_set_state(ZFPM_STATE_ACTIVE, reason); | |
5adc2528 AS |
1208 | } |
1209 | ||
1210 | /* | |
1211 | * zfpm_is_enabled | |
1212 | * | |
1213 | * Returns TRUE if the zebra FPM module has been enabled. | |
1214 | */ | |
d62a17ae | 1215 | static inline int zfpm_is_enabled(void) |
5adc2528 | 1216 | { |
d62a17ae | 1217 | return zfpm_g->enabled; |
5adc2528 AS |
1218 | } |
1219 | ||
1220 | /* | |
1221 | * zfpm_conn_is_up | |
1222 | * | |
1223 | * Returns TRUE if the connection to the FPM is up. | |
1224 | */ | |
d62a17ae | 1225 | static inline int zfpm_conn_is_up(void) |
5adc2528 | 1226 | { |
d62a17ae | 1227 | if (zfpm_g->state != ZFPM_STATE_ESTABLISHED) |
1228 | return 0; | |
5adc2528 | 1229 | |
d62a17ae | 1230 | assert(zfpm_g->sock >= 0); |
5adc2528 | 1231 | |
d62a17ae | 1232 | return 1; |
5adc2528 AS |
1233 | } |
1234 | ||
1235 | /* | |
1236 | * zfpm_trigger_update | |
1237 | * | |
1238 | * The zebra code invokes this function to indicate that we should | |
1239 | * send an update to the FPM about the given route_node. | |
1240 | */ | |
d62a17ae | 1241 | static int zfpm_trigger_update(struct route_node *rn, const char *reason) |
5adc2528 | 1242 | { |
d62a17ae | 1243 | rib_dest_t *dest; |
1244 | char buf[PREFIX_STRLEN]; | |
1245 | ||
1246 | /* | |
1247 | * Ignore if the connection is down. We will update the FPM about | |
1248 | * all destinations once the connection comes up. | |
1249 | */ | |
1250 | if (!zfpm_conn_is_up()) | |
1251 | return 0; | |
1252 | ||
1253 | dest = rib_dest_from_rnode(rn); | |
1254 | ||
d62a17ae | 1255 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)) { |
1256 | zfpm_g->stats.redundant_triggers++; | |
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | if (reason) { | |
1261 | zfpm_debug("%s triggering update to FPM - Reason: %s", | |
1262 | prefix2str(&rn->p, buf, sizeof(buf)), reason); | |
1263 | } | |
1264 | ||
1265 | SET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1266 | TAILQ_INSERT_TAIL(&zfpm_g->dest_q, dest, fpm_q_entries); | |
1267 | zfpm_g->stats.updates_triggered++; | |
1268 | ||
1269 | /* | |
1270 | * Make sure that writes are enabled. | |
1271 | */ | |
1272 | if (zfpm_g->t_write) | |
1273 | return 0; | |
1274 | ||
1275 | zfpm_write_on(); | |
1276 | return 0; | |
5adc2528 AS |
1277 | } |
1278 | ||
1279 | /* | |
1280 | * zfpm_stats_timer_cb | |
1281 | */ | |
d62a17ae | 1282 | static int zfpm_stats_timer_cb(struct thread *t) |
5adc2528 | 1283 | { |
d62a17ae | 1284 | zfpm_g->t_stats = NULL; |
5adc2528 | 1285 | |
d62a17ae | 1286 | /* |
1287 | * Remember the stats collected in the last interval for display | |
1288 | * purposes. | |
1289 | */ | |
1290 | zfpm_stats_copy(&zfpm_g->stats, &zfpm_g->last_ivl_stats); | |
5adc2528 | 1291 | |
d62a17ae | 1292 | /* |
1293 | * Add the current set of stats into the cumulative statistics. | |
1294 | */ | |
1295 | zfpm_stats_compose(&zfpm_g->cumulative_stats, &zfpm_g->stats, | |
1296 | &zfpm_g->cumulative_stats); | |
5adc2528 | 1297 | |
d62a17ae | 1298 | /* |
1299 | * Start collecting stats afresh over the next interval. | |
1300 | */ | |
1301 | zfpm_stats_reset(&zfpm_g->stats); | |
5adc2528 | 1302 | |
d62a17ae | 1303 | zfpm_start_stats_timer(); |
5adc2528 | 1304 | |
d62a17ae | 1305 | return 0; |
5adc2528 AS |
1306 | } |
1307 | ||
1308 | /* | |
1309 | * zfpm_stop_stats_timer | |
1310 | */ | |
d62a17ae | 1311 | static void zfpm_stop_stats_timer(void) |
5adc2528 | 1312 | { |
d62a17ae | 1313 | if (!zfpm_g->t_stats) |
1314 | return; | |
5adc2528 | 1315 | |
d62a17ae | 1316 | zfpm_debug("Stopping existing stats timer"); |
1317 | THREAD_TIMER_OFF(zfpm_g->t_stats); | |
5adc2528 AS |
1318 | } |
1319 | ||
1320 | /* | |
1321 | * zfpm_start_stats_timer | |
1322 | */ | |
d62a17ae | 1323 | void zfpm_start_stats_timer(void) |
5adc2528 | 1324 | { |
d62a17ae | 1325 | assert(!zfpm_g->t_stats); |
5adc2528 | 1326 | |
d62a17ae | 1327 | thread_add_timer(zfpm_g->master, zfpm_stats_timer_cb, 0, |
1328 | ZFPM_STATS_IVL_SECS, &zfpm_g->t_stats); | |
5adc2528 AS |
1329 | } |
1330 | ||
1331 | /* | |
1332 | * Helper macro for zfpm_show_stats() below. | |
1333 | */ | |
d62a17ae | 1334 | #define ZFPM_SHOW_STAT(counter) \ |
1335 | do { \ | |
1336 | vty_out(vty, "%-40s %10lu %16lu\n", #counter, \ | |
1337 | total_stats.counter, zfpm_g->last_ivl_stats.counter); \ | |
1338 | } while (0) | |
5adc2528 AS |
1339 | |
1340 | /* | |
1341 | * zfpm_show_stats | |
1342 | */ | |
d62a17ae | 1343 | static void zfpm_show_stats(struct vty *vty) |
5adc2528 | 1344 | { |
d62a17ae | 1345 | zfpm_stats_t total_stats; |
1346 | time_t elapsed; | |
1347 | ||
1348 | vty_out(vty, "\n%-40s %10s Last %2d secs\n\n", "Counter", "Total", | |
1349 | ZFPM_STATS_IVL_SECS); | |
1350 | ||
1351 | /* | |
1352 | * Compute the total stats up to this instant. | |
1353 | */ | |
1354 | zfpm_stats_compose(&zfpm_g->cumulative_stats, &zfpm_g->stats, | |
1355 | &total_stats); | |
1356 | ||
1357 | ZFPM_SHOW_STAT(connect_calls); | |
1358 | ZFPM_SHOW_STAT(connect_no_sock); | |
1359 | ZFPM_SHOW_STAT(read_cb_calls); | |
1360 | ZFPM_SHOW_STAT(write_cb_calls); | |
1361 | ZFPM_SHOW_STAT(write_calls); | |
1362 | ZFPM_SHOW_STAT(partial_writes); | |
1363 | ZFPM_SHOW_STAT(max_writes_hit); | |
1364 | ZFPM_SHOW_STAT(t_write_yields); | |
1365 | ZFPM_SHOW_STAT(nop_deletes_skipped); | |
1366 | ZFPM_SHOW_STAT(route_adds); | |
1367 | ZFPM_SHOW_STAT(route_dels); | |
1368 | ZFPM_SHOW_STAT(updates_triggered); | |
d62a17ae | 1369 | ZFPM_SHOW_STAT(redundant_triggers); |
1370 | ZFPM_SHOW_STAT(dests_del_after_update); | |
1371 | ZFPM_SHOW_STAT(t_conn_down_starts); | |
1372 | ZFPM_SHOW_STAT(t_conn_down_dests_processed); | |
1373 | ZFPM_SHOW_STAT(t_conn_down_yields); | |
1374 | ZFPM_SHOW_STAT(t_conn_down_finishes); | |
1375 | ZFPM_SHOW_STAT(t_conn_up_starts); | |
1376 | ZFPM_SHOW_STAT(t_conn_up_dests_processed); | |
1377 | ZFPM_SHOW_STAT(t_conn_up_yields); | |
1378 | ZFPM_SHOW_STAT(t_conn_up_aborts); | |
1379 | ZFPM_SHOW_STAT(t_conn_up_finishes); | |
1380 | ||
1381 | if (!zfpm_g->last_stats_clear_time) | |
1382 | return; | |
1383 | ||
1384 | elapsed = zfpm_get_elapsed_time(zfpm_g->last_stats_clear_time); | |
1385 | ||
1386 | vty_out(vty, "\nStats were cleared %lu seconds ago\n", | |
1387 | (unsigned long)elapsed); | |
5adc2528 AS |
1388 | } |
1389 | ||
1390 | /* | |
1391 | * zfpm_clear_stats | |
1392 | */ | |
d62a17ae | 1393 | static void zfpm_clear_stats(struct vty *vty) |
5adc2528 | 1394 | { |
d62a17ae | 1395 | if (!zfpm_is_enabled()) { |
1396 | vty_out(vty, "The FPM module is not enabled...\n"); | |
1397 | return; | |
1398 | } | |
5adc2528 | 1399 | |
d62a17ae | 1400 | zfpm_stats_reset(&zfpm_g->stats); |
1401 | zfpm_stats_reset(&zfpm_g->last_ivl_stats); | |
1402 | zfpm_stats_reset(&zfpm_g->cumulative_stats); | |
5adc2528 | 1403 | |
d62a17ae | 1404 | zfpm_stop_stats_timer(); |
1405 | zfpm_start_stats_timer(); | |
5adc2528 | 1406 | |
d62a17ae | 1407 | zfpm_g->last_stats_clear_time = monotime(NULL); |
5adc2528 | 1408 | |
d62a17ae | 1409 | vty_out(vty, "Cleared FPM stats\n"); |
5adc2528 AS |
1410 | } |
1411 | ||
1412 | /* | |
1413 | * show_zebra_fpm_stats | |
1414 | */ | |
1415 | DEFUN (show_zebra_fpm_stats, | |
1416 | show_zebra_fpm_stats_cmd, | |
1417 | "show zebra fpm stats", | |
1418 | SHOW_STR | |
41e7fb80 | 1419 | ZEBRA_STR |
5adc2528 AS |
1420 | "Forwarding Path Manager information\n" |
1421 | "Statistics\n") | |
1422 | { | |
d62a17ae | 1423 | zfpm_show_stats(vty); |
1424 | return CMD_SUCCESS; | |
5adc2528 AS |
1425 | } |
1426 | ||
1427 | /* | |
1428 | * clear_zebra_fpm_stats | |
1429 | */ | |
1430 | DEFUN (clear_zebra_fpm_stats, | |
1431 | clear_zebra_fpm_stats_cmd, | |
1432 | "clear zebra fpm stats", | |
1433 | CLEAR_STR | |
41e7fb80 | 1434 | ZEBRA_STR |
5adc2528 AS |
1435 | "Clear Forwarding Path Manager information\n" |
1436 | "Statistics\n") | |
1437 | { | |
d62a17ae | 1438 | zfpm_clear_stats(vty); |
1439 | return CMD_SUCCESS; | |
5adc2528 AS |
1440 | } |
1441 | ||
711ff0ba | 1442 | /* |
d62a17ae | 1443 | * update fpm connection information |
711ff0ba | 1444 | */ |
e52702f2 QY |
1445 | DEFUN ( fpm_remote_ip, |
1446 | fpm_remote_ip_cmd, | |
1447 | "fpm connection ip A.B.C.D port (1-65535)", | |
711ff0ba USK |
1448 | "fpm connection remote ip and port\n" |
1449 | "Remote fpm server ip A.B.C.D\n" | |
1450 | "Enter ip ") | |
1451 | { | |
1452 | ||
d62a17ae | 1453 | in_addr_t fpm_server; |
1454 | uint32_t port_no; | |
711ff0ba | 1455 | |
d62a17ae | 1456 | fpm_server = inet_addr(argv[3]->arg); |
1457 | if (fpm_server == INADDR_NONE) | |
1458 | return CMD_ERR_INCOMPLETE; | |
711ff0ba | 1459 | |
d62a17ae | 1460 | port_no = atoi(argv[5]->arg); |
1461 | if (port_no < TCP_MIN_PORT || port_no > TCP_MAX_PORT) | |
1462 | return CMD_ERR_INCOMPLETE; | |
711ff0ba | 1463 | |
d62a17ae | 1464 | zfpm_g->fpm_server = fpm_server; |
1465 | zfpm_g->fpm_port = port_no; | |
711ff0ba USK |
1466 | |
1467 | ||
d62a17ae | 1468 | return CMD_SUCCESS; |
711ff0ba USK |
1469 | } |
1470 | ||
e52702f2 QY |
1471 | DEFUN ( no_fpm_remote_ip, |
1472 | no_fpm_remote_ip_cmd, | |
1473 | "no fpm connection ip A.B.C.D port (1-65535)", | |
711ff0ba USK |
1474 | "fpm connection remote ip and port\n" |
1475 | "Connection\n" | |
1476 | "Remote fpm server ip A.B.C.D\n" | |
1477 | "Enter ip ") | |
1478 | { | |
d62a17ae | 1479 | if (zfpm_g->fpm_server != inet_addr(argv[4]->arg) |
1480 | || zfpm_g->fpm_port != atoi(argv[6]->arg)) | |
1481 | return CMD_ERR_NO_MATCH; | |
711ff0ba | 1482 | |
d62a17ae | 1483 | zfpm_g->fpm_server = FPM_DEFAULT_IP; |
1484 | zfpm_g->fpm_port = FPM_DEFAULT_PORT; | |
711ff0ba | 1485 | |
d62a17ae | 1486 | return CMD_SUCCESS; |
711ff0ba | 1487 | } |
711ff0ba | 1488 | |
fb0aa886 AS |
1489 | /* |
1490 | * zfpm_init_message_format | |
1491 | */ | |
d62a17ae | 1492 | static inline void zfpm_init_message_format(const char *format) |
fb0aa886 | 1493 | { |
d62a17ae | 1494 | int have_netlink, have_protobuf; |
fb0aa886 | 1495 | |
fb0aa886 | 1496 | #ifdef HAVE_NETLINK |
d62a17ae | 1497 | have_netlink = 1; |
4b2792b5 | 1498 | #else |
d62a17ae | 1499 | have_netlink = 0; |
fb0aa886 AS |
1500 | #endif |
1501 | ||
1502 | #ifdef HAVE_PROTOBUF | |
d62a17ae | 1503 | have_protobuf = 1; |
4b2792b5 | 1504 | #else |
d62a17ae | 1505 | have_protobuf = 0; |
fb0aa886 AS |
1506 | #endif |
1507 | ||
d62a17ae | 1508 | zfpm_g->message_format = ZFPM_MSG_FORMAT_NONE; |
fb0aa886 | 1509 | |
d62a17ae | 1510 | if (!format) { |
1511 | if (have_netlink) { | |
1512 | zfpm_g->message_format = ZFPM_MSG_FORMAT_NETLINK; | |
1513 | } else if (have_protobuf) { | |
1514 | zfpm_g->message_format = ZFPM_MSG_FORMAT_PROTOBUF; | |
1515 | } | |
1516 | return; | |
fb0aa886 | 1517 | } |
fb0aa886 | 1518 | |
d62a17ae | 1519 | if (!strcmp("netlink", format)) { |
1520 | if (!have_netlink) { | |
1c50c1c0 QY |
1521 | flog_err(EC_ZEBRA_NETLINK_NOT_AVAILABLE, |
1522 | "FPM netlink message format is not available"); | |
d62a17ae | 1523 | return; |
1524 | } | |
1525 | zfpm_g->message_format = ZFPM_MSG_FORMAT_NETLINK; | |
1526 | return; | |
fb0aa886 | 1527 | } |
fb0aa886 | 1528 | |
d62a17ae | 1529 | if (!strcmp("protobuf", format)) { |
1530 | if (!have_protobuf) { | |
af4c2728 | 1531 | flog_err( |
e914ccbe | 1532 | EC_ZEBRA_PROTOBUF_NOT_AVAILABLE, |
d62a17ae | 1533 | "FPM protobuf message format is not available"); |
1534 | return; | |
1535 | } | |
1536 | zfpm_g->message_format = ZFPM_MSG_FORMAT_PROTOBUF; | |
1537 | return; | |
fb0aa886 | 1538 | } |
fb0aa886 | 1539 | |
e914ccbe | 1540 | flog_warn(EC_ZEBRA_FPM_FORMAT_UNKNOWN, "Unknown fpm format '%s'", |
9df414fe | 1541 | format); |
fb0aa886 AS |
1542 | } |
1543 | ||
711ff0ba | 1544 | /** |
d62a17ae | 1545 | * fpm_remote_srv_write |
711ff0ba | 1546 | * |
d62a17ae | 1547 | * Module to write remote fpm connection |
711ff0ba USK |
1548 | * |
1549 | * Returns ZERO on success. | |
1550 | */ | |
1551 | ||
d62a17ae | 1552 | static int fpm_remote_srv_write(struct vty *vty) |
711ff0ba | 1553 | { |
d62a17ae | 1554 | struct in_addr in; |
711ff0ba | 1555 | |
d62a17ae | 1556 | in.s_addr = zfpm_g->fpm_server; |
711ff0ba | 1557 | |
9d1c2659 | 1558 | if ((zfpm_g->fpm_server != FPM_DEFAULT_IP |
996c9314 LB |
1559 | && zfpm_g->fpm_server != INADDR_ANY) |
1560 | || (zfpm_g->fpm_port != FPM_DEFAULT_PORT && zfpm_g->fpm_port != 0)) | |
d62a17ae | 1561 | vty_out(vty, "fpm connection ip %s port %d\n", inet_ntoa(in), |
1562 | zfpm_g->fpm_port); | |
711ff0ba | 1563 | |
d62a17ae | 1564 | return 0; |
711ff0ba USK |
1565 | } |
1566 | ||
1567 | ||
4f8ea50c | 1568 | /* Zebra node */ |
d62a17ae | 1569 | static struct cmd_node zebra_node = {ZEBRA_NODE, "", 1}; |
4f8ea50c DL |
1570 | |
1571 | ||
5adc2528 AS |
1572 | /** |
1573 | * zfpm_init | |
1574 | * | |
1575 | * One-time initialization of the Zebra FPM module. | |
1576 | * | |
1577 | * @param[in] port port at which FPM is running. | |
1578 | * @param[in] enable TRUE if the zebra FPM module should be enabled | |
fb0aa886 | 1579 | * @param[in] format to use to talk to the FPM. Can be 'netink' or 'protobuf'. |
5adc2528 AS |
1580 | * |
1581 | * Returns TRUE on success. | |
1582 | */ | |
d62a17ae | 1583 | static int zfpm_init(struct thread_master *master) |
5adc2528 | 1584 | { |
d62a17ae | 1585 | int enable = 1; |
1586 | uint16_t port = 0; | |
1587 | const char *format = THIS_MODULE->load_args; | |
5adc2528 | 1588 | |
d62a17ae | 1589 | memset(zfpm_g, 0, sizeof(*zfpm_g)); |
1590 | zfpm_g->master = master; | |
1591 | TAILQ_INIT(&zfpm_g->dest_q); | |
1592 | zfpm_g->sock = -1; | |
1593 | zfpm_g->state = ZFPM_STATE_IDLE; | |
5adc2528 | 1594 | |
d62a17ae | 1595 | zfpm_stats_init(&zfpm_g->stats); |
1596 | zfpm_stats_init(&zfpm_g->last_ivl_stats); | |
1597 | zfpm_stats_init(&zfpm_g->cumulative_stats); | |
5adc2528 | 1598 | |
d62a17ae | 1599 | install_node(&zebra_node, fpm_remote_srv_write); |
1600 | install_element(ENABLE_NODE, &show_zebra_fpm_stats_cmd); | |
1601 | install_element(ENABLE_NODE, &clear_zebra_fpm_stats_cmd); | |
1602 | install_element(CONFIG_NODE, &fpm_remote_ip_cmd); | |
1603 | install_element(CONFIG_NODE, &no_fpm_remote_ip_cmd); | |
5adc2528 | 1604 | |
d62a17ae | 1605 | zfpm_init_message_format(format); |
fb0aa886 | 1606 | |
d62a17ae | 1607 | /* |
1608 | * Disable FPM interface if no suitable format is available. | |
1609 | */ | |
1610 | if (zfpm_g->message_format == ZFPM_MSG_FORMAT_NONE) | |
1611 | enable = 0; | |
fb0aa886 | 1612 | |
d62a17ae | 1613 | zfpm_g->enabled = enable; |
5adc2528 | 1614 | |
d62a17ae | 1615 | if (!zfpm_g->fpm_server) |
1616 | zfpm_g->fpm_server = FPM_DEFAULT_IP; | |
711ff0ba | 1617 | |
d62a17ae | 1618 | if (!port) |
1619 | port = FPM_DEFAULT_PORT; | |
5adc2528 | 1620 | |
d62a17ae | 1621 | zfpm_g->fpm_port = port; |
5adc2528 | 1622 | |
d62a17ae | 1623 | zfpm_g->obuf = stream_new(ZFPM_OBUF_SIZE); |
1624 | zfpm_g->ibuf = stream_new(ZFPM_IBUF_SIZE); | |
5adc2528 | 1625 | |
d62a17ae | 1626 | zfpm_start_stats_timer(); |
1627 | zfpm_start_connect_timer("initialized"); | |
1628 | return 0; | |
4f8ea50c | 1629 | } |
5adc2528 | 1630 | |
d62a17ae | 1631 | static int zebra_fpm_module_init(void) |
4f8ea50c | 1632 | { |
d62a17ae | 1633 | hook_register(rib_update, zfpm_trigger_update); |
1634 | hook_register(frr_late_init, zfpm_init); | |
1635 | return 0; | |
5adc2528 | 1636 | } |
4f8ea50c | 1637 | |
d62a17ae | 1638 | FRR_MODULE_SETUP(.name = "zebra_fpm", .version = FRR_VERSION, |
1639 | .description = "zebra FPM (Forwarding Plane Manager) module", | |
1640 | .init = zebra_fpm_module_init, ) |