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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" |
e5218ec8 | 33 | #include "jhash.h" |
5adc2528 AS |
34 | |
35 | #include "zebra/rib.h" | |
7c551956 DS |
36 | #include "zebra/zserv.h" |
37 | #include "zebra/zebra_ns.h" | |
38 | #include "zebra/zebra_vrf.h" | |
67aeb554 | 39 | #include "zebra/zebra_errors.h" |
e5218ec8 | 40 | #include "zebra/zebra_memory.h" |
5adc2528 AS |
41 | |
42 | #include "fpm/fpm.h" | |
5adc2528 | 43 | #include "zebra_fpm_private.h" |
e5218ec8 | 44 | #include "zebra/zebra_router.h" |
a780a738 | 45 | #include "zebra_vxlan_private.h" |
e5218ec8 AD |
46 | |
47 | DEFINE_MTYPE_STATIC(ZEBRA, FPM_MAC_INFO, "FPM_MAC_INFO"); | |
5adc2528 AS |
48 | |
49 | /* | |
50 | * Interval at which we attempt to connect to the FPM. | |
51 | */ | |
52 | #define ZFPM_CONNECT_RETRY_IVL 5 | |
53 | ||
54 | /* | |
55 | * Sizes of outgoing and incoming stream buffers for writing/reading | |
56 | * FPM messages. | |
57 | */ | |
58 | #define ZFPM_OBUF_SIZE (2 * FPM_MAX_MSG_LEN) | |
59 | #define ZFPM_IBUF_SIZE (FPM_MAX_MSG_LEN) | |
60 | ||
61 | /* | |
62 | * The maximum number of times the FPM socket write callback can call | |
63 | * 'write' before it yields. | |
64 | */ | |
65 | #define ZFPM_MAX_WRITES_PER_RUN 10 | |
66 | ||
67 | /* | |
68 | * Interval over which we collect statistics. | |
69 | */ | |
70 | #define ZFPM_STATS_IVL_SECS 10 | |
fbe748e5 AD |
71 | #define FPM_MAX_MAC_MSG_LEN 512 |
72 | ||
7f5818fb | 73 | static void zfpm_iterate_rmac_table(struct hash_bucket *backet, void *args); |
5adc2528 AS |
74 | |
75 | /* | |
76 | * Structure that holds state for iterating over all route_node | |
77 | * structures that are candidates for being communicated to the FPM. | |
78 | */ | |
332cba05 | 79 | struct zfpm_rnodes_iter { |
d62a17ae | 80 | rib_tables_iter_t tables_iter; |
81 | route_table_iter_t iter; | |
332cba05 | 82 | }; |
5adc2528 AS |
83 | |
84 | /* | |
85 | * Statistics. | |
86 | */ | |
eeaf257b | 87 | struct zfpm_stats { |
d62a17ae | 88 | unsigned long connect_calls; |
89 | unsigned long connect_no_sock; | |
5adc2528 | 90 | |
d62a17ae | 91 | unsigned long read_cb_calls; |
5adc2528 | 92 | |
d62a17ae | 93 | unsigned long write_cb_calls; |
94 | unsigned long write_calls; | |
95 | unsigned long partial_writes; | |
96 | unsigned long max_writes_hit; | |
97 | unsigned long t_write_yields; | |
5adc2528 | 98 | |
d62a17ae | 99 | unsigned long nop_deletes_skipped; |
100 | unsigned long route_adds; | |
101 | unsigned long route_dels; | |
5adc2528 | 102 | |
d62a17ae | 103 | unsigned long updates_triggered; |
104 | unsigned long redundant_triggers; | |
5adc2528 | 105 | |
d62a17ae | 106 | unsigned long dests_del_after_update; |
5adc2528 | 107 | |
d62a17ae | 108 | unsigned long t_conn_down_starts; |
109 | unsigned long t_conn_down_dests_processed; | |
110 | unsigned long t_conn_down_yields; | |
111 | unsigned long t_conn_down_finishes; | |
5adc2528 | 112 | |
d62a17ae | 113 | unsigned long t_conn_up_starts; |
114 | unsigned long t_conn_up_dests_processed; | |
115 | unsigned long t_conn_up_yields; | |
116 | unsigned long t_conn_up_aborts; | |
117 | unsigned long t_conn_up_finishes; | |
eeaf257b | 118 | }; |
5adc2528 AS |
119 | |
120 | /* | |
121 | * States for the FPM state machine. | |
122 | */ | |
123 | typedef enum { | |
124 | ||
d62a17ae | 125 | /* |
126 | * In this state we are not yet ready to connect to the FPM. This | |
127 | * can happen when this module is disabled, or if we're cleaning up | |
128 | * after a connection has gone down. | |
129 | */ | |
130 | ZFPM_STATE_IDLE, | |
131 | ||
132 | /* | |
133 | * Ready to talk to the FPM and periodically trying to connect to | |
134 | * it. | |
135 | */ | |
136 | ZFPM_STATE_ACTIVE, | |
137 | ||
138 | /* | |
139 | * In the middle of bringing up a TCP connection. Specifically, | |
140 | * waiting for a connect() call to complete asynchronously. | |
141 | */ | |
142 | ZFPM_STATE_CONNECTING, | |
143 | ||
144 | /* | |
145 | * TCP connection to the FPM is up. | |
146 | */ | |
147 | ZFPM_STATE_ESTABLISHED | |
5adc2528 AS |
148 | |
149 | } zfpm_state_t; | |
150 | ||
fb0aa886 AS |
151 | /* |
152 | * Message format to be used to communicate with the FPM. | |
153 | */ | |
d62a17ae | 154 | typedef enum { |
155 | ZFPM_MSG_FORMAT_NONE, | |
156 | ZFPM_MSG_FORMAT_NETLINK, | |
157 | ZFPM_MSG_FORMAT_PROTOBUF, | |
fb0aa886 | 158 | } zfpm_msg_format_e; |
5adc2528 AS |
159 | /* |
160 | * Globals. | |
161 | */ | |
d62a17ae | 162 | typedef struct zfpm_glob_t_ { |
163 | ||
164 | /* | |
165 | * True if the FPM module has been enabled. | |
166 | */ | |
167 | int enabled; | |
168 | ||
169 | /* | |
170 | * Message format to be used to communicate with the fpm. | |
171 | */ | |
172 | zfpm_msg_format_e message_format; | |
173 | ||
174 | struct thread_master *master; | |
175 | ||
176 | zfpm_state_t state; | |
177 | ||
178 | in_addr_t fpm_server; | |
179 | /* | |
180 | * Port on which the FPM is running. | |
181 | */ | |
182 | int fpm_port; | |
183 | ||
184 | /* | |
185 | * List of rib_dest_t structures to be processed | |
186 | */ | |
187 | TAILQ_HEAD(zfpm_dest_q, rib_dest_t_) dest_q; | |
188 | ||
e5218ec8 AD |
189 | /* |
190 | * List of fpm_mac_info structures to be processed | |
191 | */ | |
192 | TAILQ_HEAD(zfpm_mac_q, fpm_mac_info_t) mac_q; | |
193 | ||
194 | /* | |
195 | * Hash table of fpm_mac_info_t entries | |
196 | * | |
197 | * While adding fpm_mac_info_t for a MAC to the mac_q, | |
198 | * it is possible that another fpm_mac_info_t node for the this MAC | |
199 | * is already present in the queue. | |
200 | * This is possible in the case of consecutive add->delete operations. | |
201 | * To avoid such duplicate insertions in the mac_q, | |
202 | * define a hash table for fpm_mac_info_t which can be looked up | |
203 | * to see if an fpm_mac_info_t node for a MAC is already present | |
204 | * in the mac_q. | |
205 | */ | |
206 | struct hash *fpm_mac_info_table; | |
207 | ||
d62a17ae | 208 | /* |
209 | * Stream socket to the FPM. | |
210 | */ | |
211 | int sock; | |
212 | ||
213 | /* | |
214 | * Buffers for messages to/from the FPM. | |
215 | */ | |
216 | struct stream *obuf; | |
217 | struct stream *ibuf; | |
218 | ||
219 | /* | |
220 | * Threads for I/O. | |
221 | */ | |
222 | struct thread *t_connect; | |
223 | struct thread *t_write; | |
224 | struct thread *t_read; | |
225 | ||
226 | /* | |
227 | * Thread to clean up after the TCP connection to the FPM goes down | |
228 | * and the state that belongs to it. | |
229 | */ | |
230 | struct thread *t_conn_down; | |
231 | ||
232 | struct { | |
332cba05 | 233 | struct zfpm_rnodes_iter iter; |
d62a17ae | 234 | } t_conn_down_state; |
235 | ||
236 | /* | |
237 | * Thread to take actions once the TCP conn to the FPM comes up, and | |
238 | * the state that belongs to it. | |
239 | */ | |
240 | struct thread *t_conn_up; | |
241 | ||
242 | struct { | |
332cba05 | 243 | struct zfpm_rnodes_iter iter; |
d62a17ae | 244 | } t_conn_up_state; |
245 | ||
246 | unsigned long connect_calls; | |
247 | time_t last_connect_call_time; | |
248 | ||
249 | /* | |
250 | * Stats from the start of the current statistics interval up to | |
251 | * now. These are the counters we typically update in the code. | |
252 | */ | |
eeaf257b | 253 | struct zfpm_stats stats; |
d62a17ae | 254 | |
255 | /* | |
256 | * Statistics that were gathered in the last collection interval. | |
257 | */ | |
eeaf257b | 258 | struct zfpm_stats last_ivl_stats; |
d62a17ae | 259 | |
260 | /* | |
261 | * Cumulative stats from the last clear to the start of the current | |
262 | * statistics interval. | |
263 | */ | |
eeaf257b | 264 | struct zfpm_stats cumulative_stats; |
d62a17ae | 265 | |
266 | /* | |
267 | * Stats interval timer. | |
268 | */ | |
269 | struct thread *t_stats; | |
270 | ||
271 | /* | |
272 | * If non-zero, the last time when statistics were cleared. | |
273 | */ | |
274 | time_t last_stats_clear_time; | |
5adc2528 AS |
275 | |
276 | } zfpm_glob_t; | |
277 | ||
278 | static zfpm_glob_t zfpm_glob_space; | |
279 | static zfpm_glob_t *zfpm_g = &zfpm_glob_space; | |
280 | ||
d62a17ae | 281 | static int zfpm_trigger_update(struct route_node *rn, const char *reason); |
4f8ea50c | 282 | |
d62a17ae | 283 | static int zfpm_read_cb(struct thread *thread); |
284 | static int zfpm_write_cb(struct thread *thread); | |
5adc2528 | 285 | |
d62a17ae | 286 | static void zfpm_set_state(zfpm_state_t state, const char *reason); |
287 | static void zfpm_start_connect_timer(const char *reason); | |
288 | static void zfpm_start_stats_timer(void); | |
a780a738 | 289 | static void zfpm_mac_info_del(struct fpm_mac_info_t *fpm_mac); |
5adc2528 AS |
290 | |
291 | /* | |
292 | * zfpm_thread_should_yield | |
293 | */ | |
d62a17ae | 294 | static inline int zfpm_thread_should_yield(struct thread *t) |
5adc2528 | 295 | { |
d62a17ae | 296 | return thread_should_yield(t); |
5adc2528 AS |
297 | } |
298 | ||
299 | /* | |
300 | * zfpm_state_to_str | |
301 | */ | |
d62a17ae | 302 | static const char *zfpm_state_to_str(zfpm_state_t state) |
5adc2528 | 303 | { |
d62a17ae | 304 | switch (state) { |
5adc2528 | 305 | |
d62a17ae | 306 | case ZFPM_STATE_IDLE: |
307 | return "idle"; | |
5adc2528 | 308 | |
d62a17ae | 309 | case ZFPM_STATE_ACTIVE: |
310 | return "active"; | |
5adc2528 | 311 | |
d62a17ae | 312 | case ZFPM_STATE_CONNECTING: |
313 | return "connecting"; | |
5adc2528 | 314 | |
d62a17ae | 315 | case ZFPM_STATE_ESTABLISHED: |
316 | return "established"; | |
5adc2528 | 317 | |
d62a17ae | 318 | default: |
319 | return "unknown"; | |
320 | } | |
5adc2528 AS |
321 | } |
322 | ||
5adc2528 AS |
323 | /* |
324 | * zfpm_get_elapsed_time | |
325 | * | |
326 | * Returns the time elapsed (in seconds) since the given time. | |
327 | */ | |
d62a17ae | 328 | static time_t zfpm_get_elapsed_time(time_t reference) |
5adc2528 | 329 | { |
d62a17ae | 330 | time_t now; |
5adc2528 | 331 | |
d62a17ae | 332 | now = monotime(NULL); |
5adc2528 | 333 | |
d62a17ae | 334 | if (now < reference) { |
335 | assert(0); | |
336 | return 0; | |
337 | } | |
5adc2528 | 338 | |
d62a17ae | 339 | return now - reference; |
5adc2528 AS |
340 | } |
341 | ||
5adc2528 AS |
342 | /* |
343 | * zfpm_rnodes_iter_init | |
344 | */ | |
332cba05 | 345 | static inline void zfpm_rnodes_iter_init(struct zfpm_rnodes_iter *iter) |
5adc2528 | 346 | { |
d62a17ae | 347 | memset(iter, 0, sizeof(*iter)); |
348 | rib_tables_iter_init(&iter->tables_iter); | |
349 | ||
350 | /* | |
351 | * This is a hack, but it makes implementing 'next' easier by | |
352 | * ensuring that route_table_iter_next() will return NULL the first | |
353 | * time we call it. | |
354 | */ | |
355 | route_table_iter_init(&iter->iter, NULL); | |
356 | route_table_iter_cleanup(&iter->iter); | |
5adc2528 AS |
357 | } |
358 | ||
359 | /* | |
360 | * zfpm_rnodes_iter_next | |
361 | */ | |
332cba05 DS |
362 | static inline struct route_node * |
363 | zfpm_rnodes_iter_next(struct zfpm_rnodes_iter *iter) | |
5adc2528 | 364 | { |
d62a17ae | 365 | struct route_node *rn; |
366 | struct route_table *table; | |
5adc2528 | 367 | |
d62a17ae | 368 | while (1) { |
369 | rn = route_table_iter_next(&iter->iter); | |
370 | if (rn) | |
371 | return rn; | |
5adc2528 | 372 | |
d62a17ae | 373 | /* |
374 | * We've made our way through this table, go to the next one. | |
375 | */ | |
376 | route_table_iter_cleanup(&iter->iter); | |
5adc2528 | 377 | |
c6bbea17 | 378 | table = rib_tables_iter_next(&iter->tables_iter); |
5adc2528 | 379 | |
d62a17ae | 380 | if (!table) |
381 | return NULL; | |
5adc2528 | 382 | |
d62a17ae | 383 | route_table_iter_init(&iter->iter, table); |
384 | } | |
5adc2528 | 385 | |
d62a17ae | 386 | return NULL; |
5adc2528 AS |
387 | } |
388 | ||
389 | /* | |
390 | * zfpm_rnodes_iter_pause | |
391 | */ | |
332cba05 | 392 | static inline void zfpm_rnodes_iter_pause(struct zfpm_rnodes_iter *iter) |
5adc2528 | 393 | { |
d62a17ae | 394 | route_table_iter_pause(&iter->iter); |
5adc2528 AS |
395 | } |
396 | ||
397 | /* | |
398 | * zfpm_rnodes_iter_cleanup | |
399 | */ | |
332cba05 | 400 | static inline void zfpm_rnodes_iter_cleanup(struct zfpm_rnodes_iter *iter) |
5adc2528 | 401 | { |
d62a17ae | 402 | route_table_iter_cleanup(&iter->iter); |
403 | rib_tables_iter_cleanup(&iter->tables_iter); | |
5adc2528 AS |
404 | } |
405 | ||
406 | /* | |
407 | * zfpm_stats_init | |
408 | * | |
409 | * Initialize a statistics block. | |
410 | */ | |
eeaf257b | 411 | static inline void zfpm_stats_init(struct zfpm_stats *stats) |
5adc2528 | 412 | { |
d62a17ae | 413 | memset(stats, 0, sizeof(*stats)); |
5adc2528 AS |
414 | } |
415 | ||
416 | /* | |
417 | * zfpm_stats_reset | |
418 | */ | |
eeaf257b | 419 | static inline void zfpm_stats_reset(struct zfpm_stats *stats) |
5adc2528 | 420 | { |
d62a17ae | 421 | zfpm_stats_init(stats); |
5adc2528 AS |
422 | } |
423 | ||
424 | /* | |
425 | * zfpm_stats_copy | |
426 | */ | |
eeaf257b DS |
427 | static inline void zfpm_stats_copy(const struct zfpm_stats *src, |
428 | struct zfpm_stats *dest) | |
5adc2528 | 429 | { |
d62a17ae | 430 | memcpy(dest, src, sizeof(*dest)); |
5adc2528 AS |
431 | } |
432 | ||
433 | /* | |
434 | * zfpm_stats_compose | |
435 | * | |
436 | * Total up the statistics in two stats structures ('s1 and 's2') and | |
437 | * return the result in the third argument, 'result'. Note that the | |
438 | * pointer 'result' may be the same as 's1' or 's2'. | |
439 | * | |
440 | * For simplicity, the implementation below assumes that the stats | |
441 | * structure is composed entirely of counters. This can easily be | |
442 | * changed when necessary. | |
443 | */ | |
eeaf257b DS |
444 | static void zfpm_stats_compose(const struct zfpm_stats *s1, |
445 | const struct zfpm_stats *s2, | |
446 | struct zfpm_stats *result) | |
5adc2528 | 447 | { |
d62a17ae | 448 | const unsigned long *p1, *p2; |
449 | unsigned long *result_p; | |
450 | int i, num_counters; | |
5adc2528 | 451 | |
d62a17ae | 452 | p1 = (const unsigned long *)s1; |
453 | p2 = (const unsigned long *)s2; | |
454 | result_p = (unsigned long *)result; | |
5adc2528 | 455 | |
eeaf257b | 456 | num_counters = (sizeof(struct zfpm_stats) / sizeof(unsigned long)); |
5adc2528 | 457 | |
d62a17ae | 458 | for (i = 0; i < num_counters; i++) { |
459 | result_p[i] = p1[i] + p2[i]; | |
460 | } | |
5adc2528 AS |
461 | } |
462 | ||
463 | /* | |
464 | * zfpm_read_on | |
465 | */ | |
d62a17ae | 466 | static inline void zfpm_read_on(void) |
5adc2528 | 467 | { |
d62a17ae | 468 | assert(!zfpm_g->t_read); |
469 | assert(zfpm_g->sock >= 0); | |
5adc2528 | 470 | |
d62a17ae | 471 | thread_add_read(zfpm_g->master, zfpm_read_cb, 0, zfpm_g->sock, |
472 | &zfpm_g->t_read); | |
5adc2528 AS |
473 | } |
474 | ||
475 | /* | |
476 | * zfpm_write_on | |
477 | */ | |
d62a17ae | 478 | static inline void zfpm_write_on(void) |
5adc2528 | 479 | { |
d62a17ae | 480 | assert(!zfpm_g->t_write); |
481 | assert(zfpm_g->sock >= 0); | |
5adc2528 | 482 | |
d62a17ae | 483 | thread_add_write(zfpm_g->master, zfpm_write_cb, 0, zfpm_g->sock, |
484 | &zfpm_g->t_write); | |
5adc2528 AS |
485 | } |
486 | ||
487 | /* | |
488 | * zfpm_read_off | |
489 | */ | |
d62a17ae | 490 | static inline void zfpm_read_off(void) |
5adc2528 | 491 | { |
d62a17ae | 492 | THREAD_READ_OFF(zfpm_g->t_read); |
5adc2528 AS |
493 | } |
494 | ||
495 | /* | |
496 | * zfpm_write_off | |
497 | */ | |
d62a17ae | 498 | static inline void zfpm_write_off(void) |
5adc2528 | 499 | { |
d62a17ae | 500 | THREAD_WRITE_OFF(zfpm_g->t_write); |
5adc2528 AS |
501 | } |
502 | ||
f0c459f0 DS |
503 | static inline void zfpm_connect_off(void) |
504 | { | |
505 | THREAD_TIMER_OFF(zfpm_g->t_connect); | |
506 | } | |
507 | ||
5adc2528 AS |
508 | /* |
509 | * zfpm_conn_up_thread_cb | |
510 | * | |
511 | * Callback for actions to be taken when the connection to the FPM | |
512 | * comes up. | |
513 | */ | |
d62a17ae | 514 | static int zfpm_conn_up_thread_cb(struct thread *thread) |
5adc2528 | 515 | { |
d62a17ae | 516 | struct route_node *rnode; |
332cba05 | 517 | struct zfpm_rnodes_iter *iter; |
d62a17ae | 518 | rib_dest_t *dest; |
5adc2528 | 519 | |
d62a17ae | 520 | zfpm_g->t_conn_up = NULL; |
5adc2528 | 521 | |
d62a17ae | 522 | iter = &zfpm_g->t_conn_up_state.iter; |
5adc2528 | 523 | |
d62a17ae | 524 | if (zfpm_g->state != ZFPM_STATE_ESTABLISHED) { |
525 | zfpm_debug( | |
526 | "Connection not up anymore, conn_up thread aborting"); | |
527 | zfpm_g->stats.t_conn_up_aborts++; | |
528 | goto done; | |
529 | } | |
5adc2528 | 530 | |
fbe748e5 AD |
531 | /* Enqueue FPM updates for all the RMAC entries */ |
532 | hash_iterate(zrouter.l3vni_table, zfpm_iterate_rmac_table, NULL); | |
533 | ||
d62a17ae | 534 | while ((rnode = zfpm_rnodes_iter_next(iter))) { |
535 | dest = rib_dest_from_rnode(rnode); | |
536 | ||
537 | if (dest) { | |
538 | zfpm_g->stats.t_conn_up_dests_processed++; | |
539 | zfpm_trigger_update(rnode, NULL); | |
540 | } | |
541 | ||
542 | /* | |
543 | * Yield if need be. | |
544 | */ | |
545 | if (!zfpm_thread_should_yield(thread)) | |
546 | continue; | |
547 | ||
548 | zfpm_g->stats.t_conn_up_yields++; | |
549 | zfpm_rnodes_iter_pause(iter); | |
550 | zfpm_g->t_conn_up = NULL; | |
551 | thread_add_timer_msec(zfpm_g->master, zfpm_conn_up_thread_cb, | |
552 | NULL, 0, &zfpm_g->t_conn_up); | |
553 | return 0; | |
5adc2528 AS |
554 | } |
555 | ||
d62a17ae | 556 | zfpm_g->stats.t_conn_up_finishes++; |
557 | ||
558 | done: | |
559 | zfpm_rnodes_iter_cleanup(iter); | |
560 | return 0; | |
5adc2528 AS |
561 | } |
562 | ||
563 | /* | |
564 | * zfpm_connection_up | |
565 | * | |
566 | * Called when the connection to the FPM comes up. | |
567 | */ | |
d62a17ae | 568 | static void zfpm_connection_up(const char *detail) |
5adc2528 | 569 | { |
d62a17ae | 570 | assert(zfpm_g->sock >= 0); |
571 | zfpm_read_on(); | |
572 | zfpm_write_on(); | |
573 | zfpm_set_state(ZFPM_STATE_ESTABLISHED, detail); | |
574 | ||
575 | /* | |
576 | * Start thread to push existing routes to the FPM. | |
577 | */ | |
578 | assert(!zfpm_g->t_conn_up); | |
579 | ||
580 | zfpm_rnodes_iter_init(&zfpm_g->t_conn_up_state.iter); | |
581 | ||
582 | zfpm_debug("Starting conn_up thread"); | |
583 | zfpm_g->t_conn_up = NULL; | |
584 | thread_add_timer_msec(zfpm_g->master, zfpm_conn_up_thread_cb, NULL, 0, | |
585 | &zfpm_g->t_conn_up); | |
586 | zfpm_g->stats.t_conn_up_starts++; | |
5adc2528 AS |
587 | } |
588 | ||
589 | /* | |
590 | * zfpm_connect_check | |
591 | * | |
592 | * Check if an asynchronous connect() to the FPM is complete. | |
593 | */ | |
d62a17ae | 594 | static void zfpm_connect_check(void) |
5adc2528 | 595 | { |
d62a17ae | 596 | int status; |
597 | socklen_t slen; | |
598 | int ret; | |
599 | ||
600 | zfpm_read_off(); | |
601 | zfpm_write_off(); | |
602 | ||
603 | slen = sizeof(status); | |
604 | ret = getsockopt(zfpm_g->sock, SOL_SOCKET, SO_ERROR, (void *)&status, | |
605 | &slen); | |
606 | ||
607 | if (ret >= 0 && status == 0) { | |
608 | zfpm_connection_up("async connect complete"); | |
609 | return; | |
610 | } | |
611 | ||
612 | /* | |
613 | * getsockopt() failed or indicated an error on the socket. | |
614 | */ | |
615 | close(zfpm_g->sock); | |
616 | zfpm_g->sock = -1; | |
617 | ||
618 | zfpm_start_connect_timer("getsockopt() after async connect failed"); | |
619 | return; | |
5adc2528 AS |
620 | } |
621 | ||
622 | /* | |
623 | * zfpm_conn_down_thread_cb | |
624 | * | |
625 | * Callback that is invoked to clean up state after the TCP connection | |
626 | * to the FPM goes down. | |
627 | */ | |
d62a17ae | 628 | static int zfpm_conn_down_thread_cb(struct thread *thread) |
5adc2528 | 629 | { |
d62a17ae | 630 | struct route_node *rnode; |
332cba05 | 631 | struct zfpm_rnodes_iter *iter; |
d62a17ae | 632 | rib_dest_t *dest; |
a780a738 | 633 | struct fpm_mac_info_t *mac = NULL; |
5adc2528 | 634 | |
d62a17ae | 635 | assert(zfpm_g->state == ZFPM_STATE_IDLE); |
5adc2528 | 636 | |
a780a738 AD |
637 | /* |
638 | * Delink and free all fpm_mac_info_t nodes | |
639 | * in the mac_q and fpm_mac_info_hash | |
640 | */ | |
641 | while ((mac = TAILQ_FIRST(&zfpm_g->mac_q)) != NULL) | |
642 | zfpm_mac_info_del(mac); | |
643 | ||
d62a17ae | 644 | zfpm_g->t_conn_down = NULL; |
5adc2528 | 645 | |
d62a17ae | 646 | iter = &zfpm_g->t_conn_down_state.iter; |
5adc2528 | 647 | |
d62a17ae | 648 | while ((rnode = zfpm_rnodes_iter_next(iter))) { |
649 | dest = rib_dest_from_rnode(rnode); | |
5adc2528 | 650 | |
d62a17ae | 651 | if (dest) { |
652 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)) { | |
653 | TAILQ_REMOVE(&zfpm_g->dest_q, dest, | |
654 | fpm_q_entries); | |
655 | } | |
656 | ||
657 | UNSET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
658 | UNSET_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM); | |
5adc2528 | 659 | |
d62a17ae | 660 | zfpm_g->stats.t_conn_down_dests_processed++; |
5adc2528 | 661 | |
d62a17ae | 662 | /* |
663 | * Check if the dest should be deleted. | |
664 | */ | |
665 | rib_gc_dest(rnode); | |
666 | } | |
5adc2528 | 667 | |
d62a17ae | 668 | /* |
669 | * Yield if need be. | |
670 | */ | |
671 | if (!zfpm_thread_should_yield(thread)) | |
672 | continue; | |
673 | ||
674 | zfpm_g->stats.t_conn_down_yields++; | |
675 | zfpm_rnodes_iter_pause(iter); | |
676 | zfpm_g->t_conn_down = NULL; | |
677 | thread_add_timer_msec(zfpm_g->master, zfpm_conn_down_thread_cb, | |
678 | NULL, 0, &zfpm_g->t_conn_down); | |
679 | return 0; | |
5adc2528 AS |
680 | } |
681 | ||
d62a17ae | 682 | zfpm_g->stats.t_conn_down_finishes++; |
683 | zfpm_rnodes_iter_cleanup(iter); | |
684 | ||
685 | /* | |
686 | * Start the process of connecting to the FPM again. | |
687 | */ | |
688 | zfpm_start_connect_timer("cleanup complete"); | |
689 | return 0; | |
5adc2528 AS |
690 | } |
691 | ||
692 | /* | |
693 | * zfpm_connection_down | |
694 | * | |
695 | * Called when the connection to the FPM has gone down. | |
696 | */ | |
d62a17ae | 697 | static void zfpm_connection_down(const char *detail) |
5adc2528 | 698 | { |
d62a17ae | 699 | if (!detail) |
700 | detail = "unknown"; | |
5adc2528 | 701 | |
d62a17ae | 702 | assert(zfpm_g->state == ZFPM_STATE_ESTABLISHED); |
5adc2528 | 703 | |
d62a17ae | 704 | zlog_info("connection to the FPM has gone down: %s", detail); |
5adc2528 | 705 | |
d62a17ae | 706 | zfpm_read_off(); |
707 | zfpm_write_off(); | |
5adc2528 | 708 | |
d62a17ae | 709 | stream_reset(zfpm_g->ibuf); |
710 | stream_reset(zfpm_g->obuf); | |
5adc2528 | 711 | |
d62a17ae | 712 | if (zfpm_g->sock >= 0) { |
713 | close(zfpm_g->sock); | |
714 | zfpm_g->sock = -1; | |
715 | } | |
5adc2528 | 716 | |
d62a17ae | 717 | /* |
718 | * Start thread to clean up state after the connection goes down. | |
719 | */ | |
720 | assert(!zfpm_g->t_conn_down); | |
d62a17ae | 721 | zfpm_rnodes_iter_init(&zfpm_g->t_conn_down_state.iter); |
722 | zfpm_g->t_conn_down = NULL; | |
723 | thread_add_timer_msec(zfpm_g->master, zfpm_conn_down_thread_cb, NULL, 0, | |
724 | &zfpm_g->t_conn_down); | |
725 | zfpm_g->stats.t_conn_down_starts++; | |
726 | ||
727 | zfpm_set_state(ZFPM_STATE_IDLE, detail); | |
5adc2528 AS |
728 | } |
729 | ||
730 | /* | |
731 | * zfpm_read_cb | |
732 | */ | |
d62a17ae | 733 | static int zfpm_read_cb(struct thread *thread) |
5adc2528 | 734 | { |
d62a17ae | 735 | size_t already; |
736 | struct stream *ibuf; | |
737 | uint16_t msg_len; | |
738 | fpm_msg_hdr_t *hdr; | |
739 | ||
740 | zfpm_g->stats.read_cb_calls++; | |
d62a17ae | 741 | |
742 | /* | |
743 | * Check if async connect is now done. | |
744 | */ | |
745 | if (zfpm_g->state == ZFPM_STATE_CONNECTING) { | |
746 | zfpm_connect_check(); | |
747 | return 0; | |
5adc2528 AS |
748 | } |
749 | ||
d62a17ae | 750 | assert(zfpm_g->state == ZFPM_STATE_ESTABLISHED); |
751 | assert(zfpm_g->sock >= 0); | |
5adc2528 | 752 | |
d62a17ae | 753 | ibuf = zfpm_g->ibuf; |
5adc2528 | 754 | |
d62a17ae | 755 | already = stream_get_endp(ibuf); |
756 | if (already < FPM_MSG_HDR_LEN) { | |
757 | ssize_t nbyte; | |
5adc2528 | 758 | |
d62a17ae | 759 | nbyte = stream_read_try(ibuf, zfpm_g->sock, |
760 | FPM_MSG_HDR_LEN - already); | |
761 | if (nbyte == 0 || nbyte == -1) { | |
677f704d DS |
762 | if (nbyte == -1) { |
763 | char buffer[1024]; | |
764 | ||
772270f3 QY |
765 | snprintf(buffer, sizeof(buffer), |
766 | "closed socket in read(%d): %s", errno, | |
767 | safe_strerror(errno)); | |
677f704d | 768 | zfpm_connection_down(buffer); |
996c9314 | 769 | } else |
677f704d | 770 | zfpm_connection_down("closed socket in read"); |
d62a17ae | 771 | return 0; |
772 | } | |
5adc2528 | 773 | |
d62a17ae | 774 | if (nbyte != (ssize_t)(FPM_MSG_HDR_LEN - already)) |
775 | goto done; | |
5adc2528 | 776 | |
d62a17ae | 777 | already = FPM_MSG_HDR_LEN; |
778 | } | |
5adc2528 | 779 | |
d62a17ae | 780 | stream_set_getp(ibuf, 0); |
5adc2528 | 781 | |
d62a17ae | 782 | hdr = (fpm_msg_hdr_t *)stream_pnt(ibuf); |
5adc2528 | 783 | |
d62a17ae | 784 | if (!fpm_msg_hdr_ok(hdr)) { |
785 | zfpm_connection_down("invalid message header"); | |
786 | return 0; | |
5adc2528 AS |
787 | } |
788 | ||
d62a17ae | 789 | msg_len = fpm_msg_len(hdr); |
5adc2528 | 790 | |
d62a17ae | 791 | /* |
792 | * Read out the rest of the packet. | |
793 | */ | |
794 | if (already < msg_len) { | |
795 | ssize_t nbyte; | |
5adc2528 | 796 | |
d62a17ae | 797 | nbyte = stream_read_try(ibuf, zfpm_g->sock, msg_len - already); |
5adc2528 | 798 | |
d62a17ae | 799 | if (nbyte == 0 || nbyte == -1) { |
677f704d DS |
800 | if (nbyte == -1) { |
801 | char buffer[1024]; | |
802 | ||
772270f3 QY |
803 | snprintf(buffer, sizeof(buffer), |
804 | "failed to read message(%d) %s", errno, | |
805 | safe_strerror(errno)); | |
677f704d | 806 | zfpm_connection_down(buffer); |
996c9314 | 807 | } else |
677f704d | 808 | zfpm_connection_down("failed to read message"); |
d62a17ae | 809 | return 0; |
810 | } | |
811 | ||
812 | if (nbyte != (ssize_t)(msg_len - already)) | |
813 | goto done; | |
814 | } | |
815 | ||
d62a17ae | 816 | /* |
817 | * Just throw it away for now. | |
818 | */ | |
819 | stream_reset(ibuf); | |
820 | ||
821 | done: | |
822 | zfpm_read_on(); | |
823 | return 0; | |
5adc2528 AS |
824 | } |
825 | ||
21d814eb AD |
826 | static bool zfpm_updates_pending(void) |
827 | { | |
828 | if (!(TAILQ_EMPTY(&zfpm_g->dest_q)) || !(TAILQ_EMPTY(&zfpm_g->mac_q))) | |
829 | return true; | |
830 | ||
831 | return false; | |
832 | } | |
833 | ||
5adc2528 AS |
834 | /* |
835 | * zfpm_writes_pending | |
836 | * | |
2951a7a4 | 837 | * Returns true if we may have something to write to the FPM. |
5adc2528 | 838 | */ |
d62a17ae | 839 | static int zfpm_writes_pending(void) |
5adc2528 AS |
840 | { |
841 | ||
d62a17ae | 842 | /* |
843 | * Check if there is any data in the outbound buffer that has not | |
844 | * been written to the socket yet. | |
845 | */ | |
846 | if (stream_get_endp(zfpm_g->obuf) - stream_get_getp(zfpm_g->obuf)) | |
847 | return 1; | |
5adc2528 | 848 | |
d62a17ae | 849 | /* |
21d814eb | 850 | * Check if there are any updates scheduled on the outbound queues. |
d62a17ae | 851 | */ |
21d814eb | 852 | if (zfpm_updates_pending()) |
d62a17ae | 853 | return 1; |
5adc2528 | 854 | |
d62a17ae | 855 | return 0; |
5adc2528 AS |
856 | } |
857 | ||
858 | /* | |
859 | * zfpm_encode_route | |
860 | * | |
861 | * Encode a message to the FPM with information about the given route. | |
862 | * | |
863 | * Returns the number of bytes written to the buffer. 0 or a negative | |
864 | * value indicates an error. | |
865 | */ | |
d62a17ae | 866 | static inline int zfpm_encode_route(rib_dest_t *dest, struct route_entry *re, |
867 | char *in_buf, size_t in_buf_len, | |
868 | fpm_msg_type_e *msg_type) | |
5adc2528 | 869 | { |
d62a17ae | 870 | size_t len; |
9bf75362 | 871 | #ifdef HAVE_NETLINK |
d62a17ae | 872 | int cmd; |
9bf75362 | 873 | #endif |
d62a17ae | 874 | len = 0; |
5adc2528 | 875 | |
d62a17ae | 876 | *msg_type = FPM_MSG_TYPE_NONE; |
5adc2528 | 877 | |
d62a17ae | 878 | switch (zfpm_g->message_format) { |
5adc2528 | 879 | |
d62a17ae | 880 | case ZFPM_MSG_FORMAT_PROTOBUF: |
fb0aa886 | 881 | #ifdef HAVE_PROTOBUF |
d62a17ae | 882 | len = zfpm_protobuf_encode_route(dest, re, (uint8_t *)in_buf, |
883 | in_buf_len); | |
884 | *msg_type = FPM_MSG_TYPE_PROTOBUF; | |
fb0aa886 | 885 | #endif |
d62a17ae | 886 | break; |
5adc2528 | 887 | |
d62a17ae | 888 | case ZFPM_MSG_FORMAT_NETLINK: |
fb0aa886 | 889 | #ifdef HAVE_NETLINK |
d62a17ae | 890 | *msg_type = FPM_MSG_TYPE_NETLINK; |
891 | cmd = re ? RTM_NEWROUTE : RTM_DELROUTE; | |
892 | len = zfpm_netlink_encode_route(cmd, dest, re, in_buf, | |
893 | in_buf_len); | |
894 | assert(fpm_msg_align(len) == len); | |
895 | *msg_type = FPM_MSG_TYPE_NETLINK; | |
5adc2528 | 896 | #endif /* HAVE_NETLINK */ |
d62a17ae | 897 | break; |
fb0aa886 | 898 | |
d62a17ae | 899 | default: |
900 | break; | |
901 | } | |
fb0aa886 | 902 | |
d62a17ae | 903 | return len; |
5adc2528 AS |
904 | } |
905 | ||
906 | /* | |
907 | * zfpm_route_for_update | |
908 | * | |
f0f77c9a | 909 | * Returns the re that is to be sent to the FPM for a given dest. |
5adc2528 | 910 | */ |
d62a17ae | 911 | struct route_entry *zfpm_route_for_update(rib_dest_t *dest) |
5adc2528 | 912 | { |
5f7a4718 | 913 | return dest->selected_fib; |
5adc2528 AS |
914 | } |
915 | ||
916 | /* | |
21d814eb | 917 | * Define an enum for return codes for queue processing functions |
5adc2528 | 918 | * |
21d814eb AD |
919 | * FPM_WRITE_STOP: This return code indicates that the write buffer is full. |
920 | * Stop processing all the queues and empty the buffer by writing its content | |
921 | * to the socket. | |
922 | * | |
923 | * FPM_GOTO_NEXT_Q: This return code indicates that either this queue is | |
924 | * empty or we have processed enough updates from this queue. | |
925 | * So, move on to the next queue. | |
5adc2528 | 926 | */ |
21d814eb AD |
927 | enum { |
928 | FPM_WRITE_STOP = 0, | |
929 | FPM_GOTO_NEXT_Q = 1 | |
930 | }; | |
931 | ||
932 | #define FPM_QUEUE_PROCESS_LIMIT 10000 | |
933 | ||
934 | /* | |
935 | * zfpm_build_route_updates | |
936 | * | |
937 | * Process the dest_q queue and write FPM messages to the outbound buffer. | |
938 | */ | |
939 | static int zfpm_build_route_updates(void) | |
5adc2528 | 940 | { |
d62a17ae | 941 | struct stream *s; |
942 | rib_dest_t *dest; | |
943 | unsigned char *buf, *data, *buf_end; | |
944 | size_t msg_len; | |
945 | size_t data_len; | |
946 | fpm_msg_hdr_t *hdr; | |
947 | struct route_entry *re; | |
948 | int is_add, write_msg; | |
949 | fpm_msg_type_e msg_type; | |
21d814eb | 950 | uint16_t q_limit; |
d62a17ae | 951 | |
21d814eb AD |
952 | if (TAILQ_EMPTY(&zfpm_g->dest_q)) |
953 | return FPM_GOTO_NEXT_Q; | |
d62a17ae | 954 | |
21d814eb AD |
955 | s = zfpm_g->obuf; |
956 | q_limit = FPM_QUEUE_PROCESS_LIMIT; | |
d62a17ae | 957 | |
21d814eb | 958 | do { |
d62a17ae | 959 | /* |
960 | * Make sure there is enough space to write another message. | |
961 | */ | |
962 | if (STREAM_WRITEABLE(s) < FPM_MAX_MSG_LEN) | |
21d814eb | 963 | return FPM_WRITE_STOP; |
d62a17ae | 964 | |
965 | buf = STREAM_DATA(s) + stream_get_endp(s); | |
966 | buf_end = buf + STREAM_WRITEABLE(s); | |
967 | ||
968 | dest = TAILQ_FIRST(&zfpm_g->dest_q); | |
969 | if (!dest) | |
21d814eb | 970 | return FPM_GOTO_NEXT_Q; |
d62a17ae | 971 | |
972 | assert(CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)); | |
973 | ||
974 | hdr = (fpm_msg_hdr_t *)buf; | |
975 | hdr->version = FPM_PROTO_VERSION; | |
976 | ||
977 | data = fpm_msg_data(hdr); | |
978 | ||
979 | re = zfpm_route_for_update(dest); | |
980 | is_add = re ? 1 : 0; | |
981 | ||
982 | write_msg = 1; | |
983 | ||
984 | /* | |
985 | * If this is a route deletion, and we have not sent the route | |
986 | * to | |
987 | * the FPM previously, skip it. | |
988 | */ | |
989 | if (!is_add && !CHECK_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM)) { | |
990 | write_msg = 0; | |
991 | zfpm_g->stats.nop_deletes_skipped++; | |
992 | } | |
993 | ||
994 | if (write_msg) { | |
995 | data_len = zfpm_encode_route(dest, re, (char *)data, | |
996 | buf_end - data, &msg_type); | |
997 | ||
998 | assert(data_len); | |
999 | if (data_len) { | |
1000 | hdr->msg_type = msg_type; | |
1001 | msg_len = fpm_data_len_to_msg_len(data_len); | |
1002 | hdr->msg_len = htons(msg_len); | |
1003 | stream_forward_endp(s, msg_len); | |
1004 | ||
1005 | if (is_add) | |
1006 | zfpm_g->stats.route_adds++; | |
1007 | else | |
1008 | zfpm_g->stats.route_dels++; | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | /* | |
1013 | * Remove the dest from the queue, and reset the flag. | |
1014 | */ | |
1015 | UNSET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1016 | TAILQ_REMOVE(&zfpm_g->dest_q, dest, fpm_q_entries); | |
1017 | ||
1018 | if (is_add) { | |
1019 | SET_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM); | |
1020 | } else { | |
1021 | UNSET_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM); | |
1022 | } | |
1023 | ||
1024 | /* | |
1025 | * Delete the destination if necessary. | |
1026 | */ | |
1027 | if (rib_gc_dest(dest->rnode)) | |
1028 | zfpm_g->stats.dests_del_after_update++; | |
1029 | ||
21d814eb AD |
1030 | q_limit--; |
1031 | if (q_limit == 0) { | |
1032 | /* | |
1033 | * We have processed enough updates in this queue. | |
1034 | * Now yield for other queues. | |
1035 | */ | |
1036 | return FPM_GOTO_NEXT_Q; | |
1037 | } | |
c5431822 | 1038 | } while (true); |
21d814eb AD |
1039 | } |
1040 | ||
1041 | /* | |
1042 | * zfpm_encode_mac | |
1043 | * | |
1044 | * Encode a message to FPM with information about the given MAC. | |
1045 | * | |
1046 | * Returns the number of bytes written to the buffer. | |
1047 | */ | |
1048 | static inline int zfpm_encode_mac(struct fpm_mac_info_t *mac, char *in_buf, | |
1049 | size_t in_buf_len, fpm_msg_type_e *msg_type) | |
1050 | { | |
1051 | size_t len = 0; | |
1052 | ||
1053 | *msg_type = FPM_MSG_TYPE_NONE; | |
1054 | ||
1055 | switch (zfpm_g->message_format) { | |
1056 | ||
1057 | case ZFPM_MSG_FORMAT_NONE: | |
1058 | break; | |
1059 | case ZFPM_MSG_FORMAT_NETLINK: | |
9da60d0a AD |
1060 | #ifdef HAVE_NETLINK |
1061 | len = zfpm_netlink_encode_mac(mac, in_buf, in_buf_len); | |
1062 | assert(fpm_msg_align(len) == len); | |
1063 | *msg_type = FPM_MSG_TYPE_NETLINK; | |
1064 | #endif /* HAVE_NETLINK */ | |
21d814eb AD |
1065 | break; |
1066 | case ZFPM_MSG_FORMAT_PROTOBUF: | |
1067 | break; | |
1068 | } | |
1069 | return len; | |
1070 | } | |
1071 | ||
1072 | static int zfpm_build_mac_updates(void) | |
1073 | { | |
1074 | struct stream *s; | |
1075 | struct fpm_mac_info_t *mac; | |
1076 | unsigned char *buf, *data, *buf_end; | |
1077 | fpm_msg_hdr_t *hdr; | |
1078 | size_t data_len, msg_len; | |
1079 | fpm_msg_type_e msg_type; | |
1080 | uint16_t q_limit; | |
1081 | ||
1082 | if (TAILQ_EMPTY(&zfpm_g->mac_q)) | |
1083 | return FPM_GOTO_NEXT_Q; | |
1084 | ||
1085 | s = zfpm_g->obuf; | |
1086 | q_limit = FPM_QUEUE_PROCESS_LIMIT; | |
1087 | ||
1088 | do { | |
1089 | /* Make sure there is enough space to write another message. */ | |
1090 | if (STREAM_WRITEABLE(s) < FPM_MAX_MAC_MSG_LEN) | |
1091 | return FPM_WRITE_STOP; | |
1092 | ||
1093 | buf = STREAM_DATA(s) + stream_get_endp(s); | |
1094 | buf_end = buf + STREAM_WRITEABLE(s); | |
1095 | ||
1096 | mac = TAILQ_FIRST(&zfpm_g->mac_q); | |
1097 | if (!mac) | |
1098 | return FPM_GOTO_NEXT_Q; | |
1099 | ||
1100 | /* Check for no-op */ | |
1101 | if (!CHECK_FLAG(mac->fpm_flags, ZEBRA_MAC_UPDATE_FPM)) { | |
1102 | zfpm_g->stats.nop_deletes_skipped++; | |
1103 | zfpm_mac_info_del(mac); | |
1104 | continue; | |
1105 | } | |
1106 | ||
1107 | hdr = (fpm_msg_hdr_t *)buf; | |
1108 | hdr->version = FPM_PROTO_VERSION; | |
1109 | ||
1110 | data = fpm_msg_data(hdr); | |
1111 | data_len = zfpm_encode_mac(mac, (char *)data, buf_end - data, | |
1112 | &msg_type); | |
9da60d0a | 1113 | assert(data_len); |
21d814eb AD |
1114 | |
1115 | hdr->msg_type = msg_type; | |
1116 | msg_len = fpm_data_len_to_msg_len(data_len); | |
1117 | hdr->msg_len = htons(msg_len); | |
1118 | stream_forward_endp(s, msg_len); | |
1119 | ||
1120 | /* Remove the MAC from the queue, and delete it. */ | |
1121 | zfpm_mac_info_del(mac); | |
1122 | ||
1123 | q_limit--; | |
1124 | if (q_limit == 0) { | |
1125 | /* | |
1126 | * We have processed enough updates in this queue. | |
1127 | * Now yield for other queues. | |
1128 | */ | |
1129 | return FPM_GOTO_NEXT_Q; | |
1130 | } | |
d62a17ae | 1131 | } while (1); |
5adc2528 AS |
1132 | } |
1133 | ||
21d814eb AD |
1134 | /* |
1135 | * zfpm_build_updates | |
1136 | * | |
1137 | * Process the outgoing queues and write messages to the outbound | |
1138 | * buffer. | |
1139 | */ | |
1140 | static void zfpm_build_updates(void) | |
1141 | { | |
1142 | struct stream *s; | |
1143 | ||
1144 | s = zfpm_g->obuf; | |
1145 | assert(stream_empty(s)); | |
1146 | ||
1147 | do { | |
1148 | /* | |
1149 | * Stop processing the queues if zfpm_g->obuf is full | |
1150 | * or we do not have more updates to process | |
1151 | */ | |
1152 | if (zfpm_build_mac_updates() == FPM_WRITE_STOP) | |
1153 | break; | |
1154 | if (zfpm_build_route_updates() == FPM_WRITE_STOP) | |
1155 | break; | |
1156 | } while (zfpm_updates_pending()); | |
1157 | } | |
1158 | ||
5adc2528 AS |
1159 | /* |
1160 | * zfpm_write_cb | |
1161 | */ | |
d62a17ae | 1162 | static int zfpm_write_cb(struct thread *thread) |
5adc2528 | 1163 | { |
d62a17ae | 1164 | struct stream *s; |
1165 | int num_writes; | |
1166 | ||
1167 | zfpm_g->stats.write_cb_calls++; | |
d62a17ae | 1168 | |
1169 | /* | |
1170 | * Check if async connect is now done. | |
1171 | */ | |
1172 | if (zfpm_g->state == ZFPM_STATE_CONNECTING) { | |
1173 | zfpm_connect_check(); | |
1174 | return 0; | |
1175 | } | |
5adc2528 | 1176 | |
d62a17ae | 1177 | assert(zfpm_g->state == ZFPM_STATE_ESTABLISHED); |
1178 | assert(zfpm_g->sock >= 0); | |
5adc2528 | 1179 | |
d62a17ae | 1180 | num_writes = 0; |
5adc2528 | 1181 | |
d62a17ae | 1182 | do { |
1183 | int bytes_to_write, bytes_written; | |
5adc2528 | 1184 | |
d62a17ae | 1185 | s = zfpm_g->obuf; |
5adc2528 | 1186 | |
d62a17ae | 1187 | /* |
1188 | * If the stream is empty, try fill it up with data. | |
1189 | */ | |
1190 | if (stream_empty(s)) { | |
1191 | zfpm_build_updates(); | |
1192 | } | |
5adc2528 | 1193 | |
d62a17ae | 1194 | bytes_to_write = stream_get_endp(s) - stream_get_getp(s); |
1195 | if (!bytes_to_write) | |
1196 | break; | |
5adc2528 | 1197 | |
d62a17ae | 1198 | bytes_written = |
2d34fb80 | 1199 | write(zfpm_g->sock, stream_pnt(s), bytes_to_write); |
d62a17ae | 1200 | zfpm_g->stats.write_calls++; |
1201 | num_writes++; | |
5adc2528 | 1202 | |
d62a17ae | 1203 | if (bytes_written < 0) { |
1204 | if (ERRNO_IO_RETRY(errno)) | |
1205 | break; | |
5adc2528 | 1206 | |
d62a17ae | 1207 | zfpm_connection_down("failed to write to socket"); |
1208 | return 0; | |
1209 | } | |
5adc2528 | 1210 | |
d62a17ae | 1211 | if (bytes_written != bytes_to_write) { |
5adc2528 | 1212 | |
d62a17ae | 1213 | /* |
1214 | * Partial write. | |
1215 | */ | |
1216 | stream_forward_getp(s, bytes_written); | |
1217 | zfpm_g->stats.partial_writes++; | |
1218 | break; | |
1219 | } | |
5adc2528 | 1220 | |
d62a17ae | 1221 | /* |
1222 | * We've written out the entire contents of the stream. | |
1223 | */ | |
1224 | stream_reset(s); | |
5adc2528 | 1225 | |
d62a17ae | 1226 | if (num_writes >= ZFPM_MAX_WRITES_PER_RUN) { |
1227 | zfpm_g->stats.max_writes_hit++; | |
1228 | break; | |
1229 | } | |
5adc2528 | 1230 | |
d62a17ae | 1231 | if (zfpm_thread_should_yield(thread)) { |
1232 | zfpm_g->stats.t_write_yields++; | |
1233 | break; | |
1234 | } | |
1235 | } while (1); | |
5adc2528 | 1236 | |
d62a17ae | 1237 | if (zfpm_writes_pending()) |
1238 | zfpm_write_on(); | |
5adc2528 | 1239 | |
d62a17ae | 1240 | return 0; |
5adc2528 AS |
1241 | } |
1242 | ||
1243 | /* | |
1244 | * zfpm_connect_cb | |
1245 | */ | |
d62a17ae | 1246 | static int zfpm_connect_cb(struct thread *t) |
5adc2528 | 1247 | { |
d62a17ae | 1248 | int sock, ret; |
1249 | struct sockaddr_in serv; | |
1250 | ||
d62a17ae | 1251 | assert(zfpm_g->state == ZFPM_STATE_ACTIVE); |
1252 | ||
1253 | sock = socket(AF_INET, SOCK_STREAM, 0); | |
1254 | if (sock < 0) { | |
14a4d9d0 | 1255 | zlog_err("Failed to create socket for connect(): %s", |
d62a17ae | 1256 | strerror(errno)); |
1257 | zfpm_g->stats.connect_no_sock++; | |
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | set_nonblocking(sock); | |
1262 | ||
1263 | /* Make server socket. */ | |
1264 | memset(&serv, 0, sizeof(serv)); | |
1265 | serv.sin_family = AF_INET; | |
1266 | serv.sin_port = htons(zfpm_g->fpm_port); | |
5adc2528 | 1267 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 1268 | serv.sin_len = sizeof(struct sockaddr_in); |
5adc2528 | 1269 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
d62a17ae | 1270 | if (!zfpm_g->fpm_server) |
1271 | serv.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1272 | else | |
1273 | serv.sin_addr.s_addr = (zfpm_g->fpm_server); | |
1274 | ||
1275 | /* | |
1276 | * Connect to the FPM. | |
1277 | */ | |
1278 | zfpm_g->connect_calls++; | |
1279 | zfpm_g->stats.connect_calls++; | |
1280 | zfpm_g->last_connect_call_time = monotime(NULL); | |
1281 | ||
1282 | ret = connect(sock, (struct sockaddr *)&serv, sizeof(serv)); | |
1283 | if (ret >= 0) { | |
1284 | zfpm_g->sock = sock; | |
1285 | zfpm_connection_up("connect succeeded"); | |
1286 | return 1; | |
1287 | } | |
1288 | ||
1289 | if (errno == EINPROGRESS) { | |
1290 | zfpm_g->sock = sock; | |
1291 | zfpm_read_on(); | |
1292 | zfpm_write_on(); | |
1293 | zfpm_set_state(ZFPM_STATE_CONNECTING, | |
1294 | "async connect in progress"); | |
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | zlog_info("can't connect to FPM %d: %s", sock, safe_strerror(errno)); | |
1299 | close(sock); | |
1300 | ||
1301 | /* | |
1302 | * Restart timer for retrying connection. | |
1303 | */ | |
1304 | zfpm_start_connect_timer("connect() failed"); | |
1305 | return 0; | |
5adc2528 AS |
1306 | } |
1307 | ||
1308 | /* | |
1309 | * zfpm_set_state | |
1310 | * | |
1311 | * Move state machine into the given state. | |
1312 | */ | |
d62a17ae | 1313 | static void zfpm_set_state(zfpm_state_t state, const char *reason) |
5adc2528 | 1314 | { |
d62a17ae | 1315 | zfpm_state_t cur_state = zfpm_g->state; |
1316 | ||
1317 | if (!reason) | |
1318 | reason = "Unknown"; | |
1319 | ||
1320 | if (state == cur_state) | |
1321 | return; | |
1322 | ||
1323 | zfpm_debug("beginning state transition %s -> %s. Reason: %s", | |
1324 | zfpm_state_to_str(cur_state), zfpm_state_to_str(state), | |
1325 | reason); | |
1326 | ||
1327 | switch (state) { | |
1328 | ||
1329 | case ZFPM_STATE_IDLE: | |
1330 | assert(cur_state == ZFPM_STATE_ESTABLISHED); | |
1331 | break; | |
1332 | ||
1333 | case ZFPM_STATE_ACTIVE: | |
1334 | assert(cur_state == ZFPM_STATE_IDLE | |
1335 | || cur_state == ZFPM_STATE_CONNECTING); | |
1336 | assert(zfpm_g->t_connect); | |
1337 | break; | |
1338 | ||
1339 | case ZFPM_STATE_CONNECTING: | |
1340 | assert(zfpm_g->sock); | |
1341 | assert(cur_state == ZFPM_STATE_ACTIVE); | |
1342 | assert(zfpm_g->t_read); | |
1343 | assert(zfpm_g->t_write); | |
1344 | break; | |
1345 | ||
1346 | case ZFPM_STATE_ESTABLISHED: | |
1347 | assert(cur_state == ZFPM_STATE_ACTIVE | |
1348 | || cur_state == ZFPM_STATE_CONNECTING); | |
1349 | assert(zfpm_g->sock); | |
1350 | assert(zfpm_g->t_read); | |
1351 | assert(zfpm_g->t_write); | |
1352 | break; | |
1353 | } | |
1354 | ||
1355 | zfpm_g->state = state; | |
5adc2528 AS |
1356 | } |
1357 | ||
1358 | /* | |
1359 | * zfpm_calc_connect_delay | |
1360 | * | |
1361 | * Returns the number of seconds after which we should attempt to | |
1362 | * reconnect to the FPM. | |
1363 | */ | |
d62a17ae | 1364 | static long zfpm_calc_connect_delay(void) |
5adc2528 | 1365 | { |
d62a17ae | 1366 | time_t elapsed; |
5adc2528 | 1367 | |
d62a17ae | 1368 | /* |
1369 | * Return 0 if this is our first attempt to connect. | |
1370 | */ | |
1371 | if (zfpm_g->connect_calls == 0) { | |
1372 | return 0; | |
1373 | } | |
5adc2528 | 1374 | |
d62a17ae | 1375 | elapsed = zfpm_get_elapsed_time(zfpm_g->last_connect_call_time); |
5adc2528 | 1376 | |
d62a17ae | 1377 | if (elapsed > ZFPM_CONNECT_RETRY_IVL) { |
1378 | return 0; | |
1379 | } | |
5adc2528 | 1380 | |
d62a17ae | 1381 | return ZFPM_CONNECT_RETRY_IVL - elapsed; |
5adc2528 AS |
1382 | } |
1383 | ||
1384 | /* | |
1385 | * zfpm_start_connect_timer | |
1386 | */ | |
d62a17ae | 1387 | static void zfpm_start_connect_timer(const char *reason) |
5adc2528 | 1388 | { |
d62a17ae | 1389 | long delay_secs; |
5adc2528 | 1390 | |
d62a17ae | 1391 | assert(!zfpm_g->t_connect); |
1392 | assert(zfpm_g->sock < 0); | |
5adc2528 | 1393 | |
d62a17ae | 1394 | assert(zfpm_g->state == ZFPM_STATE_IDLE |
1395 | || zfpm_g->state == ZFPM_STATE_ACTIVE | |
1396 | || zfpm_g->state == ZFPM_STATE_CONNECTING); | |
5adc2528 | 1397 | |
d62a17ae | 1398 | delay_secs = zfpm_calc_connect_delay(); |
1399 | zfpm_debug("scheduling connect in %ld seconds", delay_secs); | |
5adc2528 | 1400 | |
d62a17ae | 1401 | thread_add_timer(zfpm_g->master, zfpm_connect_cb, 0, delay_secs, |
1402 | &zfpm_g->t_connect); | |
1403 | zfpm_set_state(ZFPM_STATE_ACTIVE, reason); | |
5adc2528 AS |
1404 | } |
1405 | ||
1406 | /* | |
1407 | * zfpm_is_enabled | |
1408 | * | |
2951a7a4 | 1409 | * Returns true if the zebra FPM module has been enabled. |
5adc2528 | 1410 | */ |
d62a17ae | 1411 | static inline int zfpm_is_enabled(void) |
5adc2528 | 1412 | { |
d62a17ae | 1413 | return zfpm_g->enabled; |
5adc2528 AS |
1414 | } |
1415 | ||
1416 | /* | |
1417 | * zfpm_conn_is_up | |
1418 | * | |
2951a7a4 | 1419 | * Returns true if the connection to the FPM is up. |
5adc2528 | 1420 | */ |
d62a17ae | 1421 | static inline int zfpm_conn_is_up(void) |
5adc2528 | 1422 | { |
d62a17ae | 1423 | if (zfpm_g->state != ZFPM_STATE_ESTABLISHED) |
1424 | return 0; | |
5adc2528 | 1425 | |
d62a17ae | 1426 | assert(zfpm_g->sock >= 0); |
5adc2528 | 1427 | |
d62a17ae | 1428 | return 1; |
5adc2528 AS |
1429 | } |
1430 | ||
1431 | /* | |
1432 | * zfpm_trigger_update | |
1433 | * | |
1434 | * The zebra code invokes this function to indicate that we should | |
1435 | * send an update to the FPM about the given route_node. | |
1436 | */ | |
d62a17ae | 1437 | static int zfpm_trigger_update(struct route_node *rn, const char *reason) |
5adc2528 | 1438 | { |
d62a17ae | 1439 | rib_dest_t *dest; |
1440 | char buf[PREFIX_STRLEN]; | |
1441 | ||
1442 | /* | |
1443 | * Ignore if the connection is down. We will update the FPM about | |
1444 | * all destinations once the connection comes up. | |
1445 | */ | |
1446 | if (!zfpm_conn_is_up()) | |
1447 | return 0; | |
1448 | ||
1449 | dest = rib_dest_from_rnode(rn); | |
1450 | ||
d62a17ae | 1451 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)) { |
1452 | zfpm_g->stats.redundant_triggers++; | |
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | if (reason) { | |
1457 | zfpm_debug("%s triggering update to FPM - Reason: %s", | |
1458 | prefix2str(&rn->p, buf, sizeof(buf)), reason); | |
1459 | } | |
1460 | ||
1461 | SET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1462 | TAILQ_INSERT_TAIL(&zfpm_g->dest_q, dest, fpm_q_entries); | |
1463 | zfpm_g->stats.updates_triggered++; | |
1464 | ||
1465 | /* | |
1466 | * Make sure that writes are enabled. | |
1467 | */ | |
1468 | if (zfpm_g->t_write) | |
1469 | return 0; | |
1470 | ||
1471 | zfpm_write_on(); | |
1472 | return 0; | |
5adc2528 AS |
1473 | } |
1474 | ||
e5218ec8 AD |
1475 | /* |
1476 | * Generate Key for FPM MAC info hash entry | |
e5218ec8 AD |
1477 | */ |
1478 | static unsigned int zfpm_mac_info_hash_keymake(const void *p) | |
1479 | { | |
1480 | struct fpm_mac_info_t *fpm_mac = (struct fpm_mac_info_t *)p; | |
1481 | uint32_t mac_key; | |
1482 | ||
1483 | mac_key = jhash(fpm_mac->macaddr.octet, ETH_ALEN, 0xa5a5a55a); | |
1484 | ||
1485 | return jhash_2words(mac_key, fpm_mac->vni, 0); | |
1486 | } | |
1487 | ||
1488 | /* | |
1489 | * Compare function for FPM MAC info hash lookup | |
1490 | */ | |
1491 | static bool zfpm_mac_info_cmp(const void *p1, const void *p2) | |
1492 | { | |
1493 | const struct fpm_mac_info_t *fpm_mac1 = p1; | |
1494 | const struct fpm_mac_info_t *fpm_mac2 = p2; | |
1495 | ||
1496 | if (memcmp(fpm_mac1->macaddr.octet, fpm_mac2->macaddr.octet, ETH_ALEN) | |
1497 | != 0) | |
1498 | return false; | |
e5218ec8 AD |
1499 | if (fpm_mac1->vni != fpm_mac2->vni) |
1500 | return false; | |
1501 | ||
1502 | return true; | |
1503 | } | |
1504 | ||
1505 | /* | |
1506 | * Lookup FPM MAC info hash entry. | |
1507 | */ | |
1508 | static struct fpm_mac_info_t *zfpm_mac_info_lookup(struct fpm_mac_info_t *key) | |
1509 | { | |
1510 | return hash_lookup(zfpm_g->fpm_mac_info_table, key); | |
1511 | } | |
1512 | ||
1513 | /* | |
1514 | * Callback to allocate fpm_mac_info_t structure. | |
1515 | */ | |
1516 | static void *zfpm_mac_info_alloc(void *p) | |
1517 | { | |
1518 | const struct fpm_mac_info_t *key = p; | |
1519 | struct fpm_mac_info_t *fpm_mac; | |
1520 | ||
1521 | fpm_mac = XCALLOC(MTYPE_FPM_MAC_INFO, sizeof(struct fpm_mac_info_t)); | |
1522 | ||
1523 | memcpy(&fpm_mac->macaddr, &key->macaddr, ETH_ALEN); | |
e5218ec8 AD |
1524 | fpm_mac->vni = key->vni; |
1525 | ||
1526 | return (void *)fpm_mac; | |
1527 | } | |
1528 | ||
1529 | /* | |
1530 | * Delink and free fpm_mac_info_t. | |
1531 | */ | |
1532 | static void zfpm_mac_info_del(struct fpm_mac_info_t *fpm_mac) | |
1533 | { | |
1534 | hash_release(zfpm_g->fpm_mac_info_table, fpm_mac); | |
1535 | TAILQ_REMOVE(&zfpm_g->mac_q, fpm_mac, fpm_mac_q_entries); | |
1536 | XFREE(MTYPE_FPM_MAC_INFO, fpm_mac); | |
1537 | } | |
1538 | ||
a780a738 AD |
1539 | /* |
1540 | * zfpm_trigger_rmac_update | |
1541 | * | |
1542 | * Zebra code invokes this function to indicate that we should | |
1543 | * send an update to FPM for given MAC entry. | |
1544 | * | |
1545 | * This function checks if we already have enqueued an update for this RMAC, | |
1546 | * If yes, update the same fpm_mac_info_t. Else, create and enqueue an update. | |
1547 | */ | |
1548 | static int zfpm_trigger_rmac_update(zebra_mac_t *rmac, zebra_l3vni_t *zl3vni, | |
1549 | bool delete, const char *reason) | |
1550 | { | |
1551 | char buf[ETHER_ADDR_STRLEN]; | |
1552 | struct fpm_mac_info_t *fpm_mac, key; | |
1553 | struct interface *vxlan_if, *svi_if; | |
44f7f132 | 1554 | bool mac_found = false; |
a780a738 AD |
1555 | |
1556 | /* | |
1557 | * Ignore if the connection is down. We will update the FPM about | |
1558 | * all destinations once the connection comes up. | |
1559 | */ | |
1560 | if (!zfpm_conn_is_up()) | |
1561 | return 0; | |
1562 | ||
1563 | if (reason) { | |
1564 | zfpm_debug("triggering update to FPM - Reason: %s - %s", | |
1565 | reason, | |
1566 | prefix_mac2str(&rmac->macaddr, buf, sizeof(buf))); | |
1567 | } | |
1568 | ||
1569 | vxlan_if = zl3vni_map_to_vxlan_if(zl3vni); | |
1570 | svi_if = zl3vni_map_to_svi_if(zl3vni); | |
1571 | ||
1572 | memset(&key, 0, sizeof(struct fpm_mac_info_t)); | |
1573 | ||
1574 | memcpy(&key.macaddr, &rmac->macaddr, ETH_ALEN); | |
a780a738 AD |
1575 | key.vni = zl3vni->vni; |
1576 | ||
1577 | /* Check if this MAC is already present in the queue. */ | |
1578 | fpm_mac = zfpm_mac_info_lookup(&key); | |
1579 | ||
1580 | if (fpm_mac) { | |
44f7f132 | 1581 | mac_found = true; |
a780a738 AD |
1582 | |
1583 | /* | |
44f7f132 AD |
1584 | * If the enqueued op is "add" and current op is "delete", |
1585 | * this is a noop. So, Unset ZEBRA_MAC_UPDATE_FPM flag. | |
1586 | * While processing FPM queue, we will silently delete this | |
1587 | * MAC entry without sending any update for this MAC. | |
a780a738 | 1588 | */ |
44f7f132 AD |
1589 | if (!CHECK_FLAG(fpm_mac->fpm_flags, ZEBRA_MAC_DELETE_FPM) && |
1590 | delete == 1) { | |
a780a738 AD |
1591 | SET_FLAG(fpm_mac->fpm_flags, ZEBRA_MAC_DELETE_FPM); |
1592 | UNSET_FLAG(fpm_mac->fpm_flags, ZEBRA_MAC_UPDATE_FPM); | |
44f7f132 | 1593 | return 0; |
a780a738 | 1594 | } |
44f7f132 AD |
1595 | } else { |
1596 | fpm_mac = hash_get(zfpm_g->fpm_mac_info_table, &key, | |
1597 | zfpm_mac_info_alloc); | |
1598 | if (!fpm_mac) | |
1599 | return 0; | |
a780a738 AD |
1600 | } |
1601 | ||
44f7f132 | 1602 | fpm_mac->r_vtep_ip.s_addr = rmac->fwd_info.r_vtep_ip.s_addr; |
c5431822 | 1603 | fpm_mac->zebra_flags = rmac->flags; |
a780a738 AD |
1604 | fpm_mac->vxlan_if = vxlan_if ? vxlan_if->ifindex : 0; |
1605 | fpm_mac->svi_if = svi_if ? svi_if->ifindex : 0; | |
1606 | ||
1607 | SET_FLAG(fpm_mac->fpm_flags, ZEBRA_MAC_UPDATE_FPM); | |
1608 | if (delete) | |
1609 | SET_FLAG(fpm_mac->fpm_flags, ZEBRA_MAC_DELETE_FPM); | |
44f7f132 AD |
1610 | else |
1611 | UNSET_FLAG(fpm_mac->fpm_flags, ZEBRA_MAC_DELETE_FPM); | |
a780a738 | 1612 | |
44f7f132 AD |
1613 | if (!mac_found) |
1614 | TAILQ_INSERT_TAIL(&zfpm_g->mac_q, fpm_mac, fpm_mac_q_entries); | |
a780a738 AD |
1615 | |
1616 | zfpm_g->stats.updates_triggered++; | |
1617 | ||
a780a738 AD |
1618 | /* If writes are already enabled, return. */ |
1619 | if (zfpm_g->t_write) | |
1620 | return 0; | |
1621 | ||
1622 | zfpm_write_on(); | |
1623 | return 0; | |
1624 | } | |
1625 | ||
fbe748e5 AD |
1626 | /* |
1627 | * This function is called when the FPM connections is established. | |
1628 | * Iterate over all the RMAC entries for the given L3VNI | |
1629 | * and enqueue the RMAC for FPM processing. | |
1630 | */ | |
7f5818fb | 1631 | static void zfpm_trigger_rmac_update_wrapper(struct hash_bucket *backet, |
fbe748e5 AD |
1632 | void *args) |
1633 | { | |
1634 | zebra_mac_t *zrmac = (zebra_mac_t *)backet->data; | |
1635 | zebra_l3vni_t *zl3vni = (zebra_l3vni_t *)args; | |
1636 | ||
1637 | zfpm_trigger_rmac_update(zrmac, zl3vni, false, "RMAC added"); | |
1638 | } | |
1639 | ||
1640 | /* | |
1641 | * This function is called when the FPM connections is established. | |
1642 | * This function iterates over all the L3VNIs to trigger | |
1643 | * FPM updates for RMACs currently available. | |
1644 | */ | |
7f5818fb | 1645 | static void zfpm_iterate_rmac_table(struct hash_bucket *backet, void *args) |
fbe748e5 AD |
1646 | { |
1647 | zebra_l3vni_t *zl3vni = (zebra_l3vni_t *)backet->data; | |
1648 | ||
1649 | hash_iterate(zl3vni->rmac_table, zfpm_trigger_rmac_update_wrapper, | |
1650 | (void *)zl3vni); | |
1651 | } | |
1652 | ||
5adc2528 | 1653 | /* |
eeaf257b | 1654 | * struct zfpm_statsimer_cb |
5adc2528 | 1655 | */ |
d62a17ae | 1656 | static int zfpm_stats_timer_cb(struct thread *t) |
5adc2528 | 1657 | { |
d62a17ae | 1658 | zfpm_g->t_stats = NULL; |
5adc2528 | 1659 | |
d62a17ae | 1660 | /* |
1661 | * Remember the stats collected in the last interval for display | |
1662 | * purposes. | |
1663 | */ | |
1664 | zfpm_stats_copy(&zfpm_g->stats, &zfpm_g->last_ivl_stats); | |
5adc2528 | 1665 | |
d62a17ae | 1666 | /* |
1667 | * Add the current set of stats into the cumulative statistics. | |
1668 | */ | |
1669 | zfpm_stats_compose(&zfpm_g->cumulative_stats, &zfpm_g->stats, | |
1670 | &zfpm_g->cumulative_stats); | |
5adc2528 | 1671 | |
d62a17ae | 1672 | /* |
1673 | * Start collecting stats afresh over the next interval. | |
1674 | */ | |
1675 | zfpm_stats_reset(&zfpm_g->stats); | |
5adc2528 | 1676 | |
d62a17ae | 1677 | zfpm_start_stats_timer(); |
5adc2528 | 1678 | |
d62a17ae | 1679 | return 0; |
5adc2528 AS |
1680 | } |
1681 | ||
1682 | /* | |
1683 | * zfpm_stop_stats_timer | |
1684 | */ | |
d62a17ae | 1685 | static void zfpm_stop_stats_timer(void) |
5adc2528 | 1686 | { |
d62a17ae | 1687 | if (!zfpm_g->t_stats) |
1688 | return; | |
5adc2528 | 1689 | |
d62a17ae | 1690 | zfpm_debug("Stopping existing stats timer"); |
1691 | THREAD_TIMER_OFF(zfpm_g->t_stats); | |
5adc2528 AS |
1692 | } |
1693 | ||
1694 | /* | |
1695 | * zfpm_start_stats_timer | |
1696 | */ | |
d62a17ae | 1697 | void zfpm_start_stats_timer(void) |
5adc2528 | 1698 | { |
d62a17ae | 1699 | assert(!zfpm_g->t_stats); |
5adc2528 | 1700 | |
d62a17ae | 1701 | thread_add_timer(zfpm_g->master, zfpm_stats_timer_cb, 0, |
1702 | ZFPM_STATS_IVL_SECS, &zfpm_g->t_stats); | |
5adc2528 AS |
1703 | } |
1704 | ||
1705 | /* | |
1706 | * Helper macro for zfpm_show_stats() below. | |
1707 | */ | |
d62a17ae | 1708 | #define ZFPM_SHOW_STAT(counter) \ |
1709 | do { \ | |
1710 | vty_out(vty, "%-40s %10lu %16lu\n", #counter, \ | |
1711 | total_stats.counter, zfpm_g->last_ivl_stats.counter); \ | |
1712 | } while (0) | |
5adc2528 AS |
1713 | |
1714 | /* | |
1715 | * zfpm_show_stats | |
1716 | */ | |
d62a17ae | 1717 | static void zfpm_show_stats(struct vty *vty) |
5adc2528 | 1718 | { |
eeaf257b | 1719 | struct zfpm_stats total_stats; |
d62a17ae | 1720 | time_t elapsed; |
1721 | ||
1722 | vty_out(vty, "\n%-40s %10s Last %2d secs\n\n", "Counter", "Total", | |
1723 | ZFPM_STATS_IVL_SECS); | |
1724 | ||
1725 | /* | |
1726 | * Compute the total stats up to this instant. | |
1727 | */ | |
1728 | zfpm_stats_compose(&zfpm_g->cumulative_stats, &zfpm_g->stats, | |
1729 | &total_stats); | |
1730 | ||
1731 | ZFPM_SHOW_STAT(connect_calls); | |
1732 | ZFPM_SHOW_STAT(connect_no_sock); | |
1733 | ZFPM_SHOW_STAT(read_cb_calls); | |
1734 | ZFPM_SHOW_STAT(write_cb_calls); | |
1735 | ZFPM_SHOW_STAT(write_calls); | |
1736 | ZFPM_SHOW_STAT(partial_writes); | |
1737 | ZFPM_SHOW_STAT(max_writes_hit); | |
1738 | ZFPM_SHOW_STAT(t_write_yields); | |
1739 | ZFPM_SHOW_STAT(nop_deletes_skipped); | |
1740 | ZFPM_SHOW_STAT(route_adds); | |
1741 | ZFPM_SHOW_STAT(route_dels); | |
1742 | ZFPM_SHOW_STAT(updates_triggered); | |
d62a17ae | 1743 | ZFPM_SHOW_STAT(redundant_triggers); |
1744 | ZFPM_SHOW_STAT(dests_del_after_update); | |
1745 | ZFPM_SHOW_STAT(t_conn_down_starts); | |
1746 | ZFPM_SHOW_STAT(t_conn_down_dests_processed); | |
1747 | ZFPM_SHOW_STAT(t_conn_down_yields); | |
1748 | ZFPM_SHOW_STAT(t_conn_down_finishes); | |
1749 | ZFPM_SHOW_STAT(t_conn_up_starts); | |
1750 | ZFPM_SHOW_STAT(t_conn_up_dests_processed); | |
1751 | ZFPM_SHOW_STAT(t_conn_up_yields); | |
1752 | ZFPM_SHOW_STAT(t_conn_up_aborts); | |
1753 | ZFPM_SHOW_STAT(t_conn_up_finishes); | |
1754 | ||
1755 | if (!zfpm_g->last_stats_clear_time) | |
1756 | return; | |
1757 | ||
1758 | elapsed = zfpm_get_elapsed_time(zfpm_g->last_stats_clear_time); | |
1759 | ||
1760 | vty_out(vty, "\nStats were cleared %lu seconds ago\n", | |
1761 | (unsigned long)elapsed); | |
5adc2528 AS |
1762 | } |
1763 | ||
1764 | /* | |
1765 | * zfpm_clear_stats | |
1766 | */ | |
d62a17ae | 1767 | static void zfpm_clear_stats(struct vty *vty) |
5adc2528 | 1768 | { |
d62a17ae | 1769 | if (!zfpm_is_enabled()) { |
1770 | vty_out(vty, "The FPM module is not enabled...\n"); | |
1771 | return; | |
1772 | } | |
5adc2528 | 1773 | |
d62a17ae | 1774 | zfpm_stats_reset(&zfpm_g->stats); |
1775 | zfpm_stats_reset(&zfpm_g->last_ivl_stats); | |
1776 | zfpm_stats_reset(&zfpm_g->cumulative_stats); | |
5adc2528 | 1777 | |
d62a17ae | 1778 | zfpm_stop_stats_timer(); |
1779 | zfpm_start_stats_timer(); | |
5adc2528 | 1780 | |
d62a17ae | 1781 | zfpm_g->last_stats_clear_time = monotime(NULL); |
5adc2528 | 1782 | |
d62a17ae | 1783 | vty_out(vty, "Cleared FPM stats\n"); |
5adc2528 AS |
1784 | } |
1785 | ||
1786 | /* | |
1787 | * show_zebra_fpm_stats | |
1788 | */ | |
1789 | DEFUN (show_zebra_fpm_stats, | |
1790 | show_zebra_fpm_stats_cmd, | |
1791 | "show zebra fpm stats", | |
1792 | SHOW_STR | |
41e7fb80 | 1793 | ZEBRA_STR |
5adc2528 AS |
1794 | "Forwarding Path Manager information\n" |
1795 | "Statistics\n") | |
1796 | { | |
d62a17ae | 1797 | zfpm_show_stats(vty); |
1798 | return CMD_SUCCESS; | |
5adc2528 AS |
1799 | } |
1800 | ||
1801 | /* | |
1802 | * clear_zebra_fpm_stats | |
1803 | */ | |
1804 | DEFUN (clear_zebra_fpm_stats, | |
1805 | clear_zebra_fpm_stats_cmd, | |
1806 | "clear zebra fpm stats", | |
1807 | CLEAR_STR | |
41e7fb80 | 1808 | ZEBRA_STR |
5adc2528 AS |
1809 | "Clear Forwarding Path Manager information\n" |
1810 | "Statistics\n") | |
1811 | { | |
d62a17ae | 1812 | zfpm_clear_stats(vty); |
1813 | return CMD_SUCCESS; | |
5adc2528 AS |
1814 | } |
1815 | ||
711ff0ba | 1816 | /* |
d62a17ae | 1817 | * update fpm connection information |
711ff0ba | 1818 | */ |
e52702f2 QY |
1819 | DEFUN ( fpm_remote_ip, |
1820 | fpm_remote_ip_cmd, | |
1821 | "fpm connection ip A.B.C.D port (1-65535)", | |
711ff0ba USK |
1822 | "fpm connection remote ip and port\n" |
1823 | "Remote fpm server ip A.B.C.D\n" | |
1824 | "Enter ip ") | |
1825 | { | |
1826 | ||
d62a17ae | 1827 | in_addr_t fpm_server; |
1828 | uint32_t port_no; | |
711ff0ba | 1829 | |
d62a17ae | 1830 | fpm_server = inet_addr(argv[3]->arg); |
1831 | if (fpm_server == INADDR_NONE) | |
1832 | return CMD_ERR_INCOMPLETE; | |
711ff0ba | 1833 | |
d62a17ae | 1834 | port_no = atoi(argv[5]->arg); |
1835 | if (port_no < TCP_MIN_PORT || port_no > TCP_MAX_PORT) | |
1836 | return CMD_ERR_INCOMPLETE; | |
711ff0ba | 1837 | |
d62a17ae | 1838 | zfpm_g->fpm_server = fpm_server; |
1839 | zfpm_g->fpm_port = port_no; | |
711ff0ba USK |
1840 | |
1841 | ||
d62a17ae | 1842 | return CMD_SUCCESS; |
711ff0ba USK |
1843 | } |
1844 | ||
e52702f2 QY |
1845 | DEFUN ( no_fpm_remote_ip, |
1846 | no_fpm_remote_ip_cmd, | |
1847 | "no fpm connection ip A.B.C.D port (1-65535)", | |
711ff0ba USK |
1848 | "fpm connection remote ip and port\n" |
1849 | "Connection\n" | |
1850 | "Remote fpm server ip A.B.C.D\n" | |
1851 | "Enter ip ") | |
1852 | { | |
d62a17ae | 1853 | if (zfpm_g->fpm_server != inet_addr(argv[4]->arg) |
1854 | || zfpm_g->fpm_port != atoi(argv[6]->arg)) | |
1855 | return CMD_ERR_NO_MATCH; | |
711ff0ba | 1856 | |
d62a17ae | 1857 | zfpm_g->fpm_server = FPM_DEFAULT_IP; |
1858 | zfpm_g->fpm_port = FPM_DEFAULT_PORT; | |
711ff0ba | 1859 | |
d62a17ae | 1860 | return CMD_SUCCESS; |
711ff0ba | 1861 | } |
711ff0ba | 1862 | |
fb0aa886 AS |
1863 | /* |
1864 | * zfpm_init_message_format | |
1865 | */ | |
d62a17ae | 1866 | static inline void zfpm_init_message_format(const char *format) |
fb0aa886 | 1867 | { |
d62a17ae | 1868 | int have_netlink, have_protobuf; |
fb0aa886 | 1869 | |
fb0aa886 | 1870 | #ifdef HAVE_NETLINK |
d62a17ae | 1871 | have_netlink = 1; |
4b2792b5 | 1872 | #else |
d62a17ae | 1873 | have_netlink = 0; |
fb0aa886 AS |
1874 | #endif |
1875 | ||
1876 | #ifdef HAVE_PROTOBUF | |
d62a17ae | 1877 | have_protobuf = 1; |
4b2792b5 | 1878 | #else |
d62a17ae | 1879 | have_protobuf = 0; |
fb0aa886 AS |
1880 | #endif |
1881 | ||
d62a17ae | 1882 | zfpm_g->message_format = ZFPM_MSG_FORMAT_NONE; |
fb0aa886 | 1883 | |
d62a17ae | 1884 | if (!format) { |
1885 | if (have_netlink) { | |
1886 | zfpm_g->message_format = ZFPM_MSG_FORMAT_NETLINK; | |
1887 | } else if (have_protobuf) { | |
1888 | zfpm_g->message_format = ZFPM_MSG_FORMAT_PROTOBUF; | |
1889 | } | |
1890 | return; | |
fb0aa886 | 1891 | } |
fb0aa886 | 1892 | |
d62a17ae | 1893 | if (!strcmp("netlink", format)) { |
1894 | if (!have_netlink) { | |
1c50c1c0 QY |
1895 | flog_err(EC_ZEBRA_NETLINK_NOT_AVAILABLE, |
1896 | "FPM netlink message format is not available"); | |
d62a17ae | 1897 | return; |
1898 | } | |
1899 | zfpm_g->message_format = ZFPM_MSG_FORMAT_NETLINK; | |
1900 | return; | |
fb0aa886 | 1901 | } |
fb0aa886 | 1902 | |
d62a17ae | 1903 | if (!strcmp("protobuf", format)) { |
1904 | if (!have_protobuf) { | |
af4c2728 | 1905 | flog_err( |
e914ccbe | 1906 | EC_ZEBRA_PROTOBUF_NOT_AVAILABLE, |
d62a17ae | 1907 | "FPM protobuf message format is not available"); |
1908 | return; | |
1909 | } | |
8b9cf71c DL |
1910 | flog_warn(EC_ZEBRA_PROTOBUF_NOT_AVAILABLE, |
1911 | "FPM protobuf message format is deprecated and scheduled to be removed. " | |
1912 | "Please convert to using netlink format or contact dev@lists.frrouting.org with your use case."); | |
d62a17ae | 1913 | zfpm_g->message_format = ZFPM_MSG_FORMAT_PROTOBUF; |
1914 | return; | |
fb0aa886 | 1915 | } |
fb0aa886 | 1916 | |
e914ccbe | 1917 | flog_warn(EC_ZEBRA_FPM_FORMAT_UNKNOWN, "Unknown fpm format '%s'", |
9df414fe | 1918 | format); |
fb0aa886 AS |
1919 | } |
1920 | ||
711ff0ba | 1921 | /** |
d62a17ae | 1922 | * fpm_remote_srv_write |
711ff0ba | 1923 | * |
d62a17ae | 1924 | * Module to write remote fpm connection |
711ff0ba USK |
1925 | * |
1926 | * Returns ZERO on success. | |
1927 | */ | |
1928 | ||
d62a17ae | 1929 | static int fpm_remote_srv_write(struct vty *vty) |
711ff0ba | 1930 | { |
d62a17ae | 1931 | struct in_addr in; |
711ff0ba | 1932 | |
d62a17ae | 1933 | in.s_addr = zfpm_g->fpm_server; |
711ff0ba | 1934 | |
9d1c2659 | 1935 | if ((zfpm_g->fpm_server != FPM_DEFAULT_IP |
996c9314 LB |
1936 | && zfpm_g->fpm_server != INADDR_ANY) |
1937 | || (zfpm_g->fpm_port != FPM_DEFAULT_PORT && zfpm_g->fpm_port != 0)) | |
d62a17ae | 1938 | vty_out(vty, "fpm connection ip %s port %d\n", inet_ntoa(in), |
1939 | zfpm_g->fpm_port); | |
711ff0ba | 1940 | |
d62a17ae | 1941 | return 0; |
711ff0ba USK |
1942 | } |
1943 | ||
1944 | ||
612c2c15 | 1945 | static int fpm_remote_srv_write(struct vty *vty); |
4f8ea50c | 1946 | /* Zebra node */ |
62b346ee | 1947 | static struct cmd_node zebra_node = { |
f4b8291f | 1948 | .name = "zebra", |
62b346ee | 1949 | .node = ZEBRA_NODE, |
24389580 | 1950 | .parent_node = CONFIG_NODE, |
62b346ee | 1951 | .prompt = "", |
612c2c15 | 1952 | .config_write = fpm_remote_srv_write, |
62b346ee | 1953 | }; |
4f8ea50c DL |
1954 | |
1955 | ||
5adc2528 AS |
1956 | /** |
1957 | * zfpm_init | |
1958 | * | |
1959 | * One-time initialization of the Zebra FPM module. | |
1960 | * | |
1961 | * @param[in] port port at which FPM is running. | |
2951a7a4 | 1962 | * @param[in] enable true if the zebra FPM module should be enabled |
fb0aa886 | 1963 | * @param[in] format to use to talk to the FPM. Can be 'netink' or 'protobuf'. |
5adc2528 | 1964 | * |
2951a7a4 | 1965 | * Returns true on success. |
5adc2528 | 1966 | */ |
d62a17ae | 1967 | static int zfpm_init(struct thread_master *master) |
5adc2528 | 1968 | { |
d62a17ae | 1969 | int enable = 1; |
1970 | uint16_t port = 0; | |
1971 | const char *format = THIS_MODULE->load_args; | |
5adc2528 | 1972 | |
d62a17ae | 1973 | memset(zfpm_g, 0, sizeof(*zfpm_g)); |
1974 | zfpm_g->master = master; | |
1975 | TAILQ_INIT(&zfpm_g->dest_q); | |
e5218ec8 AD |
1976 | TAILQ_INIT(&zfpm_g->mac_q); |
1977 | ||
1978 | /* Create hash table for fpm_mac_info_t enties */ | |
1979 | zfpm_g->fpm_mac_info_table = hash_create(zfpm_mac_info_hash_keymake, | |
fbe748e5 AD |
1980 | zfpm_mac_info_cmp, |
1981 | "FPM MAC info hash table"); | |
e5218ec8 | 1982 | |
d62a17ae | 1983 | zfpm_g->sock = -1; |
1984 | zfpm_g->state = ZFPM_STATE_IDLE; | |
5adc2528 | 1985 | |
d62a17ae | 1986 | zfpm_stats_init(&zfpm_g->stats); |
1987 | zfpm_stats_init(&zfpm_g->last_ivl_stats); | |
1988 | zfpm_stats_init(&zfpm_g->cumulative_stats); | |
5adc2528 | 1989 | |
612c2c15 | 1990 | install_node(&zebra_node); |
d62a17ae | 1991 | install_element(ENABLE_NODE, &show_zebra_fpm_stats_cmd); |
1992 | install_element(ENABLE_NODE, &clear_zebra_fpm_stats_cmd); | |
1993 | install_element(CONFIG_NODE, &fpm_remote_ip_cmd); | |
1994 | install_element(CONFIG_NODE, &no_fpm_remote_ip_cmd); | |
5adc2528 | 1995 | |
d62a17ae | 1996 | zfpm_init_message_format(format); |
fb0aa886 | 1997 | |
d62a17ae | 1998 | /* |
1999 | * Disable FPM interface if no suitable format is available. | |
2000 | */ | |
2001 | if (zfpm_g->message_format == ZFPM_MSG_FORMAT_NONE) | |
2002 | enable = 0; | |
fb0aa886 | 2003 | |
d62a17ae | 2004 | zfpm_g->enabled = enable; |
5adc2528 | 2005 | |
d62a17ae | 2006 | if (!zfpm_g->fpm_server) |
2007 | zfpm_g->fpm_server = FPM_DEFAULT_IP; | |
711ff0ba | 2008 | |
d62a17ae | 2009 | if (!port) |
2010 | port = FPM_DEFAULT_PORT; | |
5adc2528 | 2011 | |
d62a17ae | 2012 | zfpm_g->fpm_port = port; |
5adc2528 | 2013 | |
d62a17ae | 2014 | zfpm_g->obuf = stream_new(ZFPM_OBUF_SIZE); |
2015 | zfpm_g->ibuf = stream_new(ZFPM_IBUF_SIZE); | |
5adc2528 | 2016 | |
d62a17ae | 2017 | zfpm_start_stats_timer(); |
2018 | zfpm_start_connect_timer("initialized"); | |
2019 | return 0; | |
4f8ea50c | 2020 | } |
5adc2528 | 2021 | |
f0c459f0 DS |
2022 | static int zfpm_fini(void) |
2023 | { | |
2024 | zfpm_write_off(); | |
2025 | zfpm_read_off(); | |
2026 | zfpm_connect_off(); | |
2027 | ||
2028 | zfpm_stop_stats_timer(); | |
2029 | ||
2030 | hook_unregister(rib_update, zfpm_trigger_update); | |
2031 | return 0; | |
2032 | } | |
2033 | ||
d62a17ae | 2034 | static int zebra_fpm_module_init(void) |
4f8ea50c | 2035 | { |
d62a17ae | 2036 | hook_register(rib_update, zfpm_trigger_update); |
a780a738 | 2037 | hook_register(zebra_rmac_update, zfpm_trigger_rmac_update); |
d62a17ae | 2038 | hook_register(frr_late_init, zfpm_init); |
f0c459f0 | 2039 | hook_register(frr_early_fini, zfpm_fini); |
d62a17ae | 2040 | return 0; |
5adc2528 | 2041 | } |
4f8ea50c | 2042 | |
d62a17ae | 2043 | FRR_MODULE_SETUP(.name = "zebra_fpm", .version = FRR_VERSION, |
2044 | .description = "zebra FPM (Forwarding Plane Manager) module", | |
2045 | .init = zebra_fpm_module_init, ) |