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d35f447d RZ |
1 | /* |
2 | * Zebra dataplane plugin for Forwarding Plane Manager (FPM) using netlink. | |
3 | * | |
4 | * Copyright (C) 2019 Network Device Education Foundation, Inc. ("NetDEF") | |
5 | * Rafael Zalamena | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
7309092b DL |
22 | #ifdef HAVE_CONFIG_H |
23 | #include "config.h" /* Include this explicitly */ | |
24 | #endif | |
25 | ||
d35f447d RZ |
26 | #include <arpa/inet.h> |
27 | ||
28 | #include <sys/types.h> | |
29 | #include <sys/socket.h> | |
30 | ||
31 | #include <errno.h> | |
32 | #include <string.h> | |
33 | ||
d35f447d | 34 | #include "lib/zebra.h" |
6cc059cd | 35 | #include "lib/json.h" |
d35f447d | 36 | #include "lib/libfrr.h" |
c871e6c9 | 37 | #include "lib/frratomic.h" |
3bdd7fca | 38 | #include "lib/command.h" |
d35f447d RZ |
39 | #include "lib/memory.h" |
40 | #include "lib/network.h" | |
41 | #include "lib/ns.h" | |
42 | #include "lib/frr_pthread.h" | |
e5e444d8 | 43 | #include "zebra/debug.h" |
bda10adf | 44 | #include "zebra/interface.h" |
d35f447d | 45 | #include "zebra/zebra_dplane.h" |
018e77bc | 46 | #include "zebra/zebra_router.h" |
b2998086 PR |
47 | #include "zebra/zebra_evpn.h" |
48 | #include "zebra/zebra_evpn_mac.h" | |
bda10adf | 49 | #include "zebra/zebra_vxlan_private.h" |
d35f447d RZ |
50 | #include "zebra/kernel_netlink.h" |
51 | #include "zebra/rt_netlink.h" | |
52 | #include "zebra/debug.h" | |
53 | ||
54 | #define SOUTHBOUND_DEFAULT_ADDR INADDR_LOOPBACK | |
55 | #define SOUTHBOUND_DEFAULT_PORT 2620 | |
56 | ||
a179ba35 RZ |
57 | /** |
58 | * FPM header: | |
59 | * { | |
60 | * version: 1 byte (always 1), | |
61 | * type: 1 byte (1 for netlink, 2 protobuf), | |
62 | * len: 2 bytes (network order), | |
63 | * } | |
64 | * | |
65 | * This header is used with any format to tell the users how many bytes to | |
66 | * expect. | |
67 | */ | |
68 | #define FPM_HEADER_SIZE 4 | |
69 | ||
d35f447d RZ |
70 | static const char *prov_name = "dplane_fpm_nl"; |
71 | ||
72 | struct fpm_nl_ctx { | |
73 | /* data plane connection. */ | |
74 | int socket; | |
3bdd7fca | 75 | bool disabled; |
d35f447d | 76 | bool connecting; |
55eb9d4d | 77 | bool nhg_complete; |
018e77bc | 78 | bool rib_complete; |
bda10adf | 79 | bool rmac_complete; |
b55ab92a | 80 | bool use_nhg; |
d35f447d RZ |
81 | struct sockaddr_storage addr; |
82 | ||
83 | /* data plane buffers. */ | |
84 | struct stream *ibuf; | |
85 | struct stream *obuf; | |
86 | pthread_mutex_t obuf_mutex; | |
87 | ||
ba803a2f RZ |
88 | /* |
89 | * data plane context queue: | |
90 | * When a FPM server connection becomes a bottleneck, we must keep the | |
91 | * data plane contexts until we get a chance to process them. | |
92 | */ | |
93 | struct dplane_ctx_q ctxqueue; | |
94 | pthread_mutex_t ctxqueue_mutex; | |
95 | ||
d35f447d | 96 | /* data plane events. */ |
ba803a2f | 97 | struct zebra_dplane_provider *prov; |
d35f447d RZ |
98 | struct frr_pthread *fthread; |
99 | struct thread *t_connect; | |
100 | struct thread *t_read; | |
101 | struct thread *t_write; | |
3bdd7fca | 102 | struct thread *t_event; |
ba803a2f | 103 | struct thread *t_dequeue; |
018e77bc RZ |
104 | |
105 | /* zebra events. */ | |
981ca597 RZ |
106 | struct thread *t_nhgreset; |
107 | struct thread *t_nhgwalk; | |
018e77bc RZ |
108 | struct thread *t_ribreset; |
109 | struct thread *t_ribwalk; | |
bda10adf RZ |
110 | struct thread *t_rmacreset; |
111 | struct thread *t_rmacwalk; | |
6cc059cd RZ |
112 | |
113 | /* Statistic counters. */ | |
114 | struct { | |
115 | /* Amount of bytes read into ibuf. */ | |
770a8d28 | 116 | _Atomic uint32_t bytes_read; |
6cc059cd | 117 | /* Amount of bytes written from obuf. */ |
770a8d28 | 118 | _Atomic uint32_t bytes_sent; |
ad4d1022 | 119 | /* Output buffer current usage. */ |
770a8d28 | 120 | _Atomic uint32_t obuf_bytes; |
ad4d1022 | 121 | /* Output buffer peak usage. */ |
770a8d28 | 122 | _Atomic uint32_t obuf_peak; |
6cc059cd RZ |
123 | |
124 | /* Amount of connection closes. */ | |
770a8d28 | 125 | _Atomic uint32_t connection_closes; |
6cc059cd | 126 | /* Amount of connection errors. */ |
770a8d28 | 127 | _Atomic uint32_t connection_errors; |
6cc059cd RZ |
128 | |
129 | /* Amount of user configurations: FNE_RECONNECT. */ | |
770a8d28 | 130 | _Atomic uint32_t user_configures; |
6cc059cd | 131 | /* Amount of user disable requests: FNE_DISABLE. */ |
770a8d28 | 132 | _Atomic uint32_t user_disables; |
6cc059cd RZ |
133 | |
134 | /* Amount of data plane context processed. */ | |
770a8d28 | 135 | _Atomic uint32_t dplane_contexts; |
ba803a2f | 136 | /* Amount of data plane contexts enqueued. */ |
770a8d28 | 137 | _Atomic uint32_t ctxqueue_len; |
ba803a2f | 138 | /* Peak amount of data plane contexts enqueued. */ |
770a8d28 | 139 | _Atomic uint32_t ctxqueue_len_peak; |
6cc059cd RZ |
140 | |
141 | /* Amount of buffer full events. */ | |
770a8d28 | 142 | _Atomic uint32_t buffer_full; |
6cc059cd | 143 | } counters; |
770a8d28 | 144 | } *gfnc; |
3bdd7fca RZ |
145 | |
146 | enum fpm_nl_events { | |
147 | /* Ask for FPM to reconnect the external server. */ | |
148 | FNE_RECONNECT, | |
149 | /* Disable FPM. */ | |
150 | FNE_DISABLE, | |
6cc059cd RZ |
151 | /* Reset counters. */ |
152 | FNE_RESET_COUNTERS, | |
b55ab92a RZ |
153 | /* Toggle next hop group feature. */ |
154 | FNE_TOGGLE_NHG, | |
a2032324 RZ |
155 | /* Reconnect request by our own code to avoid races. */ |
156 | FNE_INTERNAL_RECONNECT, | |
55eb9d4d RZ |
157 | |
158 | /* Next hop groups walk finished. */ | |
159 | FNE_NHG_FINISHED, | |
160 | /* RIB walk finished. */ | |
161 | FNE_RIB_FINISHED, | |
162 | /* RMAC walk finished. */ | |
163 | FNE_RMAC_FINISHED, | |
d35f447d RZ |
164 | }; |
165 | ||
a2032324 RZ |
166 | #define FPM_RECONNECT(fnc) \ |
167 | thread_add_event((fnc)->fthread->master, fpm_process_event, (fnc), \ | |
168 | FNE_INTERNAL_RECONNECT, &(fnc)->t_event) | |
169 | ||
55eb9d4d RZ |
170 | #define WALK_FINISH(fnc, ev) \ |
171 | thread_add_event((fnc)->fthread->master, fpm_process_event, (fnc), \ | |
172 | (ev), NULL) | |
173 | ||
018e77bc RZ |
174 | /* |
175 | * Prototypes. | |
176 | */ | |
3bdd7fca | 177 | static int fpm_process_event(struct thread *t); |
018e77bc | 178 | static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx); |
981ca597 RZ |
179 | static int fpm_nhg_send(struct thread *t); |
180 | static int fpm_nhg_reset(struct thread *t); | |
018e77bc RZ |
181 | static int fpm_rib_send(struct thread *t); |
182 | static int fpm_rib_reset(struct thread *t); | |
bda10adf RZ |
183 | static int fpm_rmac_send(struct thread *t); |
184 | static int fpm_rmac_reset(struct thread *t); | |
018e77bc | 185 | |
ad4d1022 RZ |
186 | /* |
187 | * Helper functions. | |
188 | */ | |
189 | ||
190 | /** | |
191 | * Reorganizes the data on the buffer so it can fit more data. | |
192 | * | |
193 | * @param s stream pointer. | |
194 | */ | |
195 | static void stream_pulldown(struct stream *s) | |
196 | { | |
197 | size_t rlen = STREAM_READABLE(s); | |
198 | ||
199 | /* No more data, so just move the pointers. */ | |
200 | if (rlen == 0) { | |
201 | stream_reset(s); | |
202 | return; | |
203 | } | |
204 | ||
205 | /* Move the available data to the beginning. */ | |
206 | memmove(s->data, &s->data[s->getp], rlen); | |
207 | s->getp = 0; | |
208 | s->endp = rlen; | |
209 | } | |
210 | ||
3bdd7fca RZ |
211 | /* |
212 | * CLI. | |
213 | */ | |
6cc059cd RZ |
214 | #define FPM_STR "Forwarding Plane Manager configuration\n" |
215 | ||
3bdd7fca RZ |
216 | DEFUN(fpm_set_address, fpm_set_address_cmd, |
217 | "fpm address <A.B.C.D|X:X::X:X> [port (1-65535)]", | |
6cc059cd | 218 | FPM_STR |
3bdd7fca RZ |
219 | "FPM remote listening server address\n" |
220 | "Remote IPv4 FPM server\n" | |
221 | "Remote IPv6 FPM server\n" | |
222 | "FPM remote listening server port\n" | |
223 | "Remote FPM server port\n") | |
224 | { | |
225 | struct sockaddr_in *sin; | |
226 | struct sockaddr_in6 *sin6; | |
227 | uint16_t port = 0; | |
228 | uint8_t naddr[INET6_BUFSIZ]; | |
229 | ||
230 | if (argc == 5) | |
231 | port = strtol(argv[4]->arg, NULL, 10); | |
232 | ||
233 | /* Handle IPv4 addresses. */ | |
234 | if (inet_pton(AF_INET, argv[2]->arg, naddr) == 1) { | |
235 | sin = (struct sockaddr_in *)&gfnc->addr; | |
236 | ||
237 | memset(sin, 0, sizeof(*sin)); | |
238 | sin->sin_family = AF_INET; | |
239 | sin->sin_port = | |
240 | port ? htons(port) : htons(SOUTHBOUND_DEFAULT_PORT); | |
241 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
242 | sin->sin_len = sizeof(*sin); | |
243 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
244 | memcpy(&sin->sin_addr, naddr, sizeof(sin->sin_addr)); | |
245 | ||
246 | goto ask_reconnect; | |
247 | } | |
248 | ||
249 | /* Handle IPv6 addresses. */ | |
250 | if (inet_pton(AF_INET6, argv[2]->arg, naddr) != 1) { | |
251 | vty_out(vty, "%% Invalid address: %s\n", argv[2]->arg); | |
252 | return CMD_WARNING; | |
253 | } | |
254 | ||
255 | sin6 = (struct sockaddr_in6 *)&gfnc->addr; | |
256 | memset(sin6, 0, sizeof(*sin6)); | |
257 | sin6->sin6_family = AF_INET6; | |
258 | sin6->sin6_port = port ? htons(port) : htons(SOUTHBOUND_DEFAULT_PORT); | |
259 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
260 | sin6->sin6_len = sizeof(*sin6); | |
261 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
262 | memcpy(&sin6->sin6_addr, naddr, sizeof(sin6->sin6_addr)); | |
263 | ||
264 | ask_reconnect: | |
265 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
266 | FNE_RECONNECT, &gfnc->t_event); | |
267 | return CMD_SUCCESS; | |
268 | } | |
269 | ||
270 | DEFUN(no_fpm_set_address, no_fpm_set_address_cmd, | |
271 | "no fpm address [<A.B.C.D|X:X::X:X> [port <1-65535>]]", | |
272 | NO_STR | |
6cc059cd | 273 | FPM_STR |
3bdd7fca RZ |
274 | "FPM remote listening server address\n" |
275 | "Remote IPv4 FPM server\n" | |
276 | "Remote IPv6 FPM server\n" | |
277 | "FPM remote listening server port\n" | |
278 | "Remote FPM server port\n") | |
279 | { | |
280 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
281 | FNE_DISABLE, &gfnc->t_event); | |
282 | return CMD_SUCCESS; | |
283 | } | |
284 | ||
b55ab92a RZ |
285 | DEFUN(fpm_use_nhg, fpm_use_nhg_cmd, |
286 | "fpm use-next-hop-groups", | |
287 | FPM_STR | |
288 | "Use netlink next hop groups feature.\n") | |
289 | { | |
290 | /* Already enabled. */ | |
291 | if (gfnc->use_nhg) | |
292 | return CMD_SUCCESS; | |
293 | ||
294 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
295 | FNE_TOGGLE_NHG, &gfnc->t_event); | |
296 | ||
297 | return CMD_SUCCESS; | |
298 | } | |
299 | ||
300 | DEFUN(no_fpm_use_nhg, no_fpm_use_nhg_cmd, | |
301 | "no fpm use-next-hop-groups", | |
302 | NO_STR | |
303 | FPM_STR | |
304 | "Use netlink next hop groups feature.\n") | |
305 | { | |
306 | /* Already disabled. */ | |
307 | if (!gfnc->use_nhg) | |
308 | return CMD_SUCCESS; | |
309 | ||
310 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
311 | FNE_TOGGLE_NHG, &gfnc->t_event); | |
312 | ||
313 | return CMD_SUCCESS; | |
314 | } | |
315 | ||
6cc059cd RZ |
316 | DEFUN(fpm_reset_counters, fpm_reset_counters_cmd, |
317 | "clear fpm counters", | |
318 | CLEAR_STR | |
319 | FPM_STR | |
320 | "FPM statistic counters\n") | |
321 | { | |
322 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
323 | FNE_RESET_COUNTERS, &gfnc->t_event); | |
324 | return CMD_SUCCESS; | |
325 | } | |
326 | ||
327 | DEFUN(fpm_show_counters, fpm_show_counters_cmd, | |
328 | "show fpm counters", | |
329 | SHOW_STR | |
330 | FPM_STR | |
331 | "FPM statistic counters\n") | |
332 | { | |
333 | vty_out(vty, "%30s\n%30s\n", "FPM counters", "============"); | |
334 | ||
335 | #define SHOW_COUNTER(label, counter) \ | |
770a8d28 | 336 | vty_out(vty, "%28s: %u\n", (label), (counter)) |
6cc059cd RZ |
337 | |
338 | SHOW_COUNTER("Input bytes", gfnc->counters.bytes_read); | |
339 | SHOW_COUNTER("Output bytes", gfnc->counters.bytes_sent); | |
ad4d1022 RZ |
340 | SHOW_COUNTER("Output buffer current size", gfnc->counters.obuf_bytes); |
341 | SHOW_COUNTER("Output buffer peak size", gfnc->counters.obuf_peak); | |
6cc059cd RZ |
342 | SHOW_COUNTER("Connection closes", gfnc->counters.connection_closes); |
343 | SHOW_COUNTER("Connection errors", gfnc->counters.connection_errors); | |
344 | SHOW_COUNTER("Data plane items processed", | |
345 | gfnc->counters.dplane_contexts); | |
ba803a2f RZ |
346 | SHOW_COUNTER("Data plane items enqueued", |
347 | gfnc->counters.ctxqueue_len); | |
348 | SHOW_COUNTER("Data plane items queue peak", | |
349 | gfnc->counters.ctxqueue_len_peak); | |
6cc059cd RZ |
350 | SHOW_COUNTER("Buffer full hits", gfnc->counters.buffer_full); |
351 | SHOW_COUNTER("User FPM configurations", gfnc->counters.user_configures); | |
352 | SHOW_COUNTER("User FPM disable requests", gfnc->counters.user_disables); | |
353 | ||
354 | #undef SHOW_COUNTER | |
355 | ||
356 | return CMD_SUCCESS; | |
357 | } | |
358 | ||
359 | DEFUN(fpm_show_counters_json, fpm_show_counters_json_cmd, | |
360 | "show fpm counters json", | |
361 | SHOW_STR | |
362 | FPM_STR | |
363 | "FPM statistic counters\n" | |
364 | JSON_STR) | |
365 | { | |
366 | struct json_object *jo; | |
367 | ||
368 | jo = json_object_new_object(); | |
369 | json_object_int_add(jo, "bytes-read", gfnc->counters.bytes_read); | |
370 | json_object_int_add(jo, "bytes-sent", gfnc->counters.bytes_sent); | |
ad4d1022 RZ |
371 | json_object_int_add(jo, "obuf-bytes", gfnc->counters.obuf_bytes); |
372 | json_object_int_add(jo, "obuf-bytes-peak", gfnc->counters.obuf_peak); | |
a50404aa RZ |
373 | json_object_int_add(jo, "connection-closes", |
374 | gfnc->counters.connection_closes); | |
375 | json_object_int_add(jo, "connection-errors", | |
376 | gfnc->counters.connection_errors); | |
377 | json_object_int_add(jo, "data-plane-contexts", | |
378 | gfnc->counters.dplane_contexts); | |
ba803a2f RZ |
379 | json_object_int_add(jo, "data-plane-contexts-queue", |
380 | gfnc->counters.ctxqueue_len); | |
381 | json_object_int_add(jo, "data-plane-contexts-queue-peak", | |
382 | gfnc->counters.ctxqueue_len_peak); | |
6cc059cd | 383 | json_object_int_add(jo, "buffer-full-hits", gfnc->counters.buffer_full); |
a50404aa RZ |
384 | json_object_int_add(jo, "user-configures", |
385 | gfnc->counters.user_configures); | |
6cc059cd RZ |
386 | json_object_int_add(jo, "user-disables", gfnc->counters.user_disables); |
387 | vty_out(vty, "%s\n", json_object_to_json_string_ext(jo, 0)); | |
388 | json_object_free(jo); | |
389 | ||
390 | return CMD_SUCCESS; | |
391 | } | |
392 | ||
3bdd7fca RZ |
393 | static int fpm_write_config(struct vty *vty) |
394 | { | |
395 | struct sockaddr_in *sin; | |
396 | struct sockaddr_in6 *sin6; | |
397 | int written = 0; | |
398 | char addrstr[INET6_ADDRSTRLEN]; | |
399 | ||
400 | if (gfnc->disabled) | |
401 | return written; | |
402 | ||
403 | switch (gfnc->addr.ss_family) { | |
404 | case AF_INET: | |
405 | written = 1; | |
406 | sin = (struct sockaddr_in *)&gfnc->addr; | |
407 | inet_ntop(AF_INET, &sin->sin_addr, addrstr, sizeof(addrstr)); | |
408 | vty_out(vty, "fpm address %s", addrstr); | |
409 | if (sin->sin_port != htons(SOUTHBOUND_DEFAULT_PORT)) | |
410 | vty_out(vty, " port %d", ntohs(sin->sin_port)); | |
411 | ||
412 | vty_out(vty, "\n"); | |
413 | break; | |
414 | case AF_INET6: | |
415 | written = 1; | |
416 | sin6 = (struct sockaddr_in6 *)&gfnc->addr; | |
417 | inet_ntop(AF_INET, &sin6->sin6_addr, addrstr, sizeof(addrstr)); | |
418 | vty_out(vty, "fpm address %s", addrstr); | |
419 | if (sin6->sin6_port != htons(SOUTHBOUND_DEFAULT_PORT)) | |
420 | vty_out(vty, " port %d", ntohs(sin6->sin6_port)); | |
421 | ||
422 | vty_out(vty, "\n"); | |
423 | break; | |
424 | ||
425 | default: | |
426 | break; | |
427 | } | |
428 | ||
b55ab92a RZ |
429 | if (!gfnc->use_nhg) { |
430 | vty_out(vty, "no fpm use-next-hop-groups\n"); | |
431 | written = 1; | |
432 | } | |
433 | ||
3bdd7fca RZ |
434 | return written; |
435 | } | |
436 | ||
612c2c15 | 437 | static struct cmd_node fpm_node = { |
893d8beb DL |
438 | .name = "fpm", |
439 | .node = FPM_NODE, | |
3bdd7fca | 440 | .prompt = "", |
612c2c15 | 441 | .config_write = fpm_write_config, |
3bdd7fca RZ |
442 | }; |
443 | ||
d35f447d RZ |
444 | /* |
445 | * FPM functions. | |
446 | */ | |
447 | static int fpm_connect(struct thread *t); | |
448 | ||
449 | static void fpm_reconnect(struct fpm_nl_ctx *fnc) | |
450 | { | |
a2032324 RZ |
451 | /* Cancel all zebra threads first. */ |
452 | thread_cancel_async(zrouter.master, &fnc->t_nhgreset, NULL); | |
453 | thread_cancel_async(zrouter.master, &fnc->t_nhgwalk, NULL); | |
454 | thread_cancel_async(zrouter.master, &fnc->t_ribreset, NULL); | |
455 | thread_cancel_async(zrouter.master, &fnc->t_ribwalk, NULL); | |
456 | thread_cancel_async(zrouter.master, &fnc->t_rmacreset, NULL); | |
457 | thread_cancel_async(zrouter.master, &fnc->t_rmacwalk, NULL); | |
458 | ||
459 | /* | |
460 | * Grab the lock to empty the streams (data plane might try to | |
461 | * enqueue updates while we are closing). | |
462 | */ | |
d35f447d RZ |
463 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); |
464 | ||
3bdd7fca RZ |
465 | /* Avoid calling close on `-1`. */ |
466 | if (fnc->socket != -1) { | |
467 | close(fnc->socket); | |
468 | fnc->socket = -1; | |
469 | } | |
470 | ||
d35f447d RZ |
471 | stream_reset(fnc->ibuf); |
472 | stream_reset(fnc->obuf); | |
473 | THREAD_OFF(fnc->t_read); | |
474 | THREAD_OFF(fnc->t_write); | |
018e77bc | 475 | |
3bdd7fca RZ |
476 | /* FPM is disabled, don't attempt to connect. */ |
477 | if (fnc->disabled) | |
478 | return; | |
479 | ||
d35f447d RZ |
480 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, |
481 | &fnc->t_connect); | |
482 | } | |
483 | ||
484 | static int fpm_read(struct thread *t) | |
485 | { | |
486 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
487 | ssize_t rv; | |
488 | ||
489 | /* Let's ignore the input at the moment. */ | |
490 | rv = stream_read_try(fnc->ibuf, fnc->socket, | |
491 | STREAM_WRITEABLE(fnc->ibuf)); | |
e1afb97f RZ |
492 | /* We've got an interruption. */ |
493 | if (rv == -2) { | |
494 | /* Schedule next read. */ | |
495 | thread_add_read(fnc->fthread->master, fpm_read, fnc, | |
496 | fnc->socket, &fnc->t_read); | |
497 | return 0; | |
498 | } | |
d35f447d | 499 | if (rv == 0) { |
c871e6c9 RZ |
500 | atomic_fetch_add_explicit(&fnc->counters.connection_closes, 1, |
501 | memory_order_relaxed); | |
e5e444d8 RZ |
502 | |
503 | if (IS_ZEBRA_DEBUG_FPM) | |
504 | zlog_debug("%s: connection closed", __func__); | |
505 | ||
a2032324 | 506 | FPM_RECONNECT(fnc); |
d35f447d RZ |
507 | return 0; |
508 | } | |
509 | if (rv == -1) { | |
c871e6c9 RZ |
510 | atomic_fetch_add_explicit(&fnc->counters.connection_errors, 1, |
511 | memory_order_relaxed); | |
e5e444d8 RZ |
512 | zlog_warn("%s: connection failure: %s", __func__, |
513 | strerror(errno)); | |
a2032324 | 514 | FPM_RECONNECT(fnc); |
d35f447d RZ |
515 | return 0; |
516 | } | |
517 | stream_reset(fnc->ibuf); | |
518 | ||
6cc059cd | 519 | /* Account all bytes read. */ |
c871e6c9 RZ |
520 | atomic_fetch_add_explicit(&fnc->counters.bytes_read, rv, |
521 | memory_order_relaxed); | |
6cc059cd | 522 | |
d35f447d RZ |
523 | thread_add_read(fnc->fthread->master, fpm_read, fnc, fnc->socket, |
524 | &fnc->t_read); | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
529 | static int fpm_write(struct thread *t) | |
530 | { | |
531 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
532 | socklen_t statuslen; | |
533 | ssize_t bwritten; | |
534 | int rv, status; | |
535 | size_t btotal; | |
536 | ||
537 | if (fnc->connecting == true) { | |
538 | status = 0; | |
539 | statuslen = sizeof(status); | |
540 | ||
541 | rv = getsockopt(fnc->socket, SOL_SOCKET, SO_ERROR, &status, | |
542 | &statuslen); | |
543 | if (rv == -1 || status != 0) { | |
544 | if (rv != -1) | |
e5e444d8 RZ |
545 | zlog_warn("%s: connection failed: %s", __func__, |
546 | strerror(status)); | |
d35f447d | 547 | else |
e5e444d8 RZ |
548 | zlog_warn("%s: SO_ERROR failed: %s", __func__, |
549 | strerror(status)); | |
d35f447d | 550 | |
c871e6c9 RZ |
551 | atomic_fetch_add_explicit( |
552 | &fnc->counters.connection_errors, 1, | |
553 | memory_order_relaxed); | |
6cc059cd | 554 | |
a2032324 | 555 | FPM_RECONNECT(fnc); |
d35f447d RZ |
556 | return 0; |
557 | } | |
558 | ||
559 | fnc->connecting = false; | |
018e77bc | 560 | |
e1afb97f RZ |
561 | /* Permit receiving messages now. */ |
562 | thread_add_read(fnc->fthread->master, fpm_read, fnc, | |
563 | fnc->socket, &fnc->t_read); | |
d35f447d RZ |
564 | } |
565 | ||
566 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
567 | ||
568 | while (true) { | |
569 | /* Stream is empty: reset pointers and return. */ | |
570 | if (STREAM_READABLE(fnc->obuf) == 0) { | |
571 | stream_reset(fnc->obuf); | |
572 | break; | |
573 | } | |
574 | ||
575 | /* Try to write all at once. */ | |
576 | btotal = stream_get_endp(fnc->obuf) - | |
577 | stream_get_getp(fnc->obuf); | |
578 | bwritten = write(fnc->socket, stream_pnt(fnc->obuf), btotal); | |
579 | if (bwritten == 0) { | |
c871e6c9 RZ |
580 | atomic_fetch_add_explicit( |
581 | &fnc->counters.connection_closes, 1, | |
582 | memory_order_relaxed); | |
e5e444d8 RZ |
583 | |
584 | if (IS_ZEBRA_DEBUG_FPM) | |
585 | zlog_debug("%s: connection closed", __func__); | |
d35f447d RZ |
586 | break; |
587 | } | |
588 | if (bwritten == -1) { | |
ad4d1022 RZ |
589 | /* Attempt to continue if blocked by a signal. */ |
590 | if (errno == EINTR) | |
591 | continue; | |
592 | /* Receiver is probably slow, lets give it some time. */ | |
593 | if (errno == EAGAIN || errno == EWOULDBLOCK) | |
d35f447d RZ |
594 | break; |
595 | ||
c871e6c9 RZ |
596 | atomic_fetch_add_explicit( |
597 | &fnc->counters.connection_errors, 1, | |
598 | memory_order_relaxed); | |
e5e444d8 RZ |
599 | zlog_warn("%s: connection failure: %s", __func__, |
600 | strerror(errno)); | |
a2032324 RZ |
601 | |
602 | FPM_RECONNECT(fnc); | |
603 | return 0; | |
d35f447d RZ |
604 | } |
605 | ||
6cc059cd | 606 | /* Account all bytes sent. */ |
c871e6c9 RZ |
607 | atomic_fetch_add_explicit(&fnc->counters.bytes_sent, bwritten, |
608 | memory_order_relaxed); | |
6cc059cd | 609 | |
ad4d1022 | 610 | /* Account number of bytes free. */ |
c871e6c9 RZ |
611 | atomic_fetch_sub_explicit(&fnc->counters.obuf_bytes, bwritten, |
612 | memory_order_relaxed); | |
ad4d1022 | 613 | |
d35f447d RZ |
614 | stream_forward_getp(fnc->obuf, (size_t)bwritten); |
615 | } | |
616 | ||
617 | /* Stream is not empty yet, we must schedule more writes. */ | |
618 | if (STREAM_READABLE(fnc->obuf)) { | |
ad4d1022 | 619 | stream_pulldown(fnc->obuf); |
d35f447d RZ |
620 | thread_add_write(fnc->fthread->master, fpm_write, fnc, |
621 | fnc->socket, &fnc->t_write); | |
622 | return 0; | |
623 | } | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | static int fpm_connect(struct thread *t) | |
629 | { | |
630 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
3bdd7fca RZ |
631 | struct sockaddr_in *sin = (struct sockaddr_in *)&fnc->addr; |
632 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&fnc->addr; | |
633 | socklen_t slen; | |
d35f447d RZ |
634 | int rv, sock; |
635 | char addrstr[INET6_ADDRSTRLEN]; | |
636 | ||
3bdd7fca | 637 | sock = socket(fnc->addr.ss_family, SOCK_STREAM, 0); |
d35f447d | 638 | if (sock == -1) { |
6cc059cd | 639 | zlog_err("%s: fpm socket failed: %s", __func__, |
d35f447d RZ |
640 | strerror(errno)); |
641 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, | |
642 | &fnc->t_connect); | |
643 | return 0; | |
644 | } | |
645 | ||
646 | set_nonblocking(sock); | |
647 | ||
3bdd7fca RZ |
648 | if (fnc->addr.ss_family == AF_INET) { |
649 | inet_ntop(AF_INET, &sin->sin_addr, addrstr, sizeof(addrstr)); | |
650 | slen = sizeof(*sin); | |
651 | } else { | |
652 | inet_ntop(AF_INET6, &sin6->sin6_addr, addrstr, sizeof(addrstr)); | |
653 | slen = sizeof(*sin6); | |
654 | } | |
d35f447d | 655 | |
e5e444d8 RZ |
656 | if (IS_ZEBRA_DEBUG_FPM) |
657 | zlog_debug("%s: attempting to connect to %s:%d", __func__, | |
658 | addrstr, ntohs(sin->sin_port)); | |
d35f447d | 659 | |
3bdd7fca | 660 | rv = connect(sock, (struct sockaddr *)&fnc->addr, slen); |
d35f447d | 661 | if (rv == -1 && errno != EINPROGRESS) { |
c871e6c9 RZ |
662 | atomic_fetch_add_explicit(&fnc->counters.connection_errors, 1, |
663 | memory_order_relaxed); | |
d35f447d RZ |
664 | close(sock); |
665 | zlog_warn("%s: fpm connection failed: %s", __func__, | |
666 | strerror(errno)); | |
667 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, | |
668 | &fnc->t_connect); | |
669 | return 0; | |
670 | } | |
671 | ||
672 | fnc->connecting = (errno == EINPROGRESS); | |
673 | fnc->socket = sock; | |
e1afb97f RZ |
674 | if (!fnc->connecting) |
675 | thread_add_read(fnc->fthread->master, fpm_read, fnc, sock, | |
676 | &fnc->t_read); | |
d35f447d RZ |
677 | thread_add_write(fnc->fthread->master, fpm_write, fnc, sock, |
678 | &fnc->t_write); | |
679 | ||
018e77bc | 680 | /* Mark all routes as unsent. */ |
e41e0f81 RZ |
681 | if (fnc->use_nhg) |
682 | thread_add_timer(zrouter.master, fpm_nhg_reset, fnc, 0, | |
683 | &fnc->t_nhgreset); | |
684 | else | |
685 | thread_add_timer(zrouter.master, fpm_rib_reset, fnc, 0, | |
686 | &fnc->t_ribreset); | |
018e77bc | 687 | |
d35f447d RZ |
688 | return 0; |
689 | } | |
690 | ||
691 | /** | |
692 | * Encode data plane operation context into netlink and enqueue it in the FPM | |
693 | * output buffer. | |
694 | * | |
695 | * @param fnc the netlink FPM context. | |
696 | * @param ctx the data plane operation context data. | |
697 | * @return 0 on success or -1 on not enough space. | |
698 | */ | |
699 | static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx) | |
700 | { | |
701 | uint8_t nl_buf[NL_PKT_BUF_SIZE]; | |
702 | size_t nl_buf_len; | |
703 | ssize_t rv; | |
edfeff42 | 704 | uint64_t obytes, obytes_peak; |
b55ab92a RZ |
705 | enum dplane_op_e op = dplane_ctx_get_op(ctx); |
706 | ||
707 | /* | |
708 | * If we were configured to not use next hop groups, then quit as soon | |
709 | * as possible. | |
710 | */ | |
711 | if ((!fnc->use_nhg) | |
712 | && (op == DPLANE_OP_NH_DELETE || op == DPLANE_OP_NH_INSTALL | |
713 | || op == DPLANE_OP_NH_UPDATE)) | |
714 | return 0; | |
d35f447d RZ |
715 | |
716 | nl_buf_len = 0; | |
717 | ||
718 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
719 | ||
b55ab92a | 720 | switch (op) { |
d35f447d RZ |
721 | case DPLANE_OP_ROUTE_UPDATE: |
722 | case DPLANE_OP_ROUTE_DELETE: | |
0be6e7d7 JU |
723 | rv = netlink_route_multipath_msg_encode(RTM_DELROUTE, ctx, |
724 | nl_buf, sizeof(nl_buf), | |
725 | true, fnc->use_nhg); | |
d35f447d | 726 | if (rv <= 0) { |
0be6e7d7 JU |
727 | zlog_err( |
728 | "%s: netlink_route_multipath_msg_encode failed", | |
729 | __func__); | |
d35f447d RZ |
730 | return 0; |
731 | } | |
732 | ||
733 | nl_buf_len = (size_t)rv; | |
d35f447d RZ |
734 | |
735 | /* UPDATE operations need a INSTALL, otherwise just quit. */ | |
b55ab92a | 736 | if (op == DPLANE_OP_ROUTE_DELETE) |
d35f447d RZ |
737 | break; |
738 | ||
739 | /* FALL THROUGH */ | |
740 | case DPLANE_OP_ROUTE_INSTALL: | |
0be6e7d7 | 741 | rv = netlink_route_multipath_msg_encode( |
b55ab92a RZ |
742 | RTM_NEWROUTE, ctx, &nl_buf[nl_buf_len], |
743 | sizeof(nl_buf) - nl_buf_len, true, fnc->use_nhg); | |
d35f447d | 744 | if (rv <= 0) { |
0be6e7d7 JU |
745 | zlog_err( |
746 | "%s: netlink_route_multipath_msg_encode failed", | |
747 | __func__); | |
d35f447d RZ |
748 | return 0; |
749 | } | |
750 | ||
751 | nl_buf_len += (size_t)rv; | |
d35f447d RZ |
752 | break; |
753 | ||
bda10adf RZ |
754 | case DPLANE_OP_MAC_INSTALL: |
755 | case DPLANE_OP_MAC_DELETE: | |
756 | rv = netlink_macfdb_update_ctx(ctx, nl_buf, sizeof(nl_buf)); | |
757 | if (rv <= 0) { | |
e5e444d8 RZ |
758 | zlog_err("%s: netlink_macfdb_update_ctx failed", |
759 | __func__); | |
bda10adf RZ |
760 | return 0; |
761 | } | |
762 | ||
763 | nl_buf_len = (size_t)rv; | |
bda10adf RZ |
764 | break; |
765 | ||
e9a1cd93 | 766 | case DPLANE_OP_NH_DELETE: |
0be6e7d7 JU |
767 | rv = netlink_nexthop_msg_encode(RTM_DELNEXTHOP, ctx, nl_buf, |
768 | sizeof(nl_buf)); | |
e9a1cd93 | 769 | if (rv <= 0) { |
0be6e7d7 JU |
770 | zlog_err("%s: netlink_nexthop_msg_encode failed", |
771 | __func__); | |
e9a1cd93 RZ |
772 | return 0; |
773 | } | |
774 | ||
775 | nl_buf_len = (size_t)rv; | |
776 | break; | |
d35f447d RZ |
777 | case DPLANE_OP_NH_INSTALL: |
778 | case DPLANE_OP_NH_UPDATE: | |
0be6e7d7 JU |
779 | rv = netlink_nexthop_msg_encode(RTM_NEWNEXTHOP, ctx, nl_buf, |
780 | sizeof(nl_buf)); | |
e9a1cd93 | 781 | if (rv <= 0) { |
0be6e7d7 JU |
782 | zlog_err("%s: netlink_nexthop_msg_encode failed", |
783 | __func__); | |
e9a1cd93 RZ |
784 | return 0; |
785 | } | |
786 | ||
787 | nl_buf_len = (size_t)rv; | |
788 | break; | |
789 | ||
d35f447d RZ |
790 | case DPLANE_OP_LSP_INSTALL: |
791 | case DPLANE_OP_LSP_UPDATE: | |
792 | case DPLANE_OP_LSP_DELETE: | |
793 | case DPLANE_OP_PW_INSTALL: | |
794 | case DPLANE_OP_PW_UNINSTALL: | |
795 | case DPLANE_OP_ADDR_INSTALL: | |
796 | case DPLANE_OP_ADDR_UNINSTALL: | |
d35f447d RZ |
797 | case DPLANE_OP_NEIGH_INSTALL: |
798 | case DPLANE_OP_NEIGH_UPDATE: | |
799 | case DPLANE_OP_NEIGH_DELETE: | |
800 | case DPLANE_OP_VTEP_ADD: | |
801 | case DPLANE_OP_VTEP_DELETE: | |
802 | case DPLANE_OP_SYS_ROUTE_ADD: | |
803 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
804 | case DPLANE_OP_ROUTE_NOTIFY: | |
805 | case DPLANE_OP_LSP_NOTIFY: | |
806 | case DPLANE_OP_NONE: | |
807 | break; | |
808 | ||
809 | default: | |
e5e444d8 RZ |
810 | if (IS_ZEBRA_DEBUG_FPM) |
811 | zlog_debug("%s: unhandled data plane message (%d) %s", | |
812 | __func__, dplane_ctx_get_op(ctx), | |
813 | dplane_op2str(dplane_ctx_get_op(ctx))); | |
d35f447d RZ |
814 | break; |
815 | } | |
816 | ||
817 | /* Skip empty enqueues. */ | |
818 | if (nl_buf_len == 0) | |
819 | return 0; | |
820 | ||
a179ba35 RZ |
821 | /* We must know if someday a message goes beyond 65KiB. */ |
822 | assert((nl_buf_len + FPM_HEADER_SIZE) <= UINT16_MAX); | |
823 | ||
824 | /* Check if we have enough buffer space. */ | |
825 | if (STREAM_WRITEABLE(fnc->obuf) < (nl_buf_len + FPM_HEADER_SIZE)) { | |
c871e6c9 RZ |
826 | atomic_fetch_add_explicit(&fnc->counters.buffer_full, 1, |
827 | memory_order_relaxed); | |
e5e444d8 RZ |
828 | |
829 | if (IS_ZEBRA_DEBUG_FPM) | |
830 | zlog_debug( | |
831 | "%s: buffer full: wants to write %zu but has %zu", | |
832 | __func__, nl_buf_len + FPM_HEADER_SIZE, | |
833 | STREAM_WRITEABLE(fnc->obuf)); | |
834 | ||
a179ba35 RZ |
835 | return -1; |
836 | } | |
837 | ||
d35f447d | 838 | /* |
a179ba35 RZ |
839 | * Fill in the FPM header information. |
840 | * | |
841 | * See FPM_HEADER_SIZE definition for more information. | |
d35f447d RZ |
842 | */ |
843 | stream_putc(fnc->obuf, 1); | |
844 | stream_putc(fnc->obuf, 1); | |
a179ba35 | 845 | stream_putw(fnc->obuf, nl_buf_len + FPM_HEADER_SIZE); |
d35f447d RZ |
846 | |
847 | /* Write current data. */ | |
848 | stream_write(fnc->obuf, nl_buf, (size_t)nl_buf_len); | |
849 | ||
ad4d1022 | 850 | /* Account number of bytes waiting to be written. */ |
c871e6c9 RZ |
851 | atomic_fetch_add_explicit(&fnc->counters.obuf_bytes, |
852 | nl_buf_len + FPM_HEADER_SIZE, | |
853 | memory_order_relaxed); | |
edfeff42 RZ |
854 | obytes = atomic_load_explicit(&fnc->counters.obuf_bytes, |
855 | memory_order_relaxed); | |
856 | obytes_peak = atomic_load_explicit(&fnc->counters.obuf_peak, | |
857 | memory_order_relaxed); | |
858 | if (obytes_peak < obytes) | |
c871e6c9 RZ |
859 | atomic_store_explicit(&fnc->counters.obuf_peak, obytes, |
860 | memory_order_relaxed); | |
ad4d1022 | 861 | |
d35f447d RZ |
862 | /* Tell the thread to start writing. */ |
863 | thread_add_write(fnc->fthread->master, fpm_write, fnc, fnc->socket, | |
864 | &fnc->t_write); | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
981ca597 RZ |
869 | /* |
870 | * Next hop walk/send functions. | |
871 | */ | |
872 | struct fpm_nhg_arg { | |
873 | struct zebra_dplane_ctx *ctx; | |
874 | struct fpm_nl_ctx *fnc; | |
875 | bool complete; | |
876 | }; | |
877 | ||
878 | static int fpm_nhg_send_cb(struct hash_bucket *bucket, void *arg) | |
879 | { | |
880 | struct nhg_hash_entry *nhe = bucket->data; | |
881 | struct fpm_nhg_arg *fna = arg; | |
882 | ||
883 | /* This entry was already sent, skip it. */ | |
884 | if (CHECK_FLAG(nhe->flags, NEXTHOP_GROUP_FPM)) | |
885 | return HASHWALK_CONTINUE; | |
886 | ||
887 | /* Reset ctx to reuse allocated memory, take a snapshot and send it. */ | |
888 | dplane_ctx_reset(fna->ctx); | |
889 | dplane_ctx_nexthop_init(fna->ctx, DPLANE_OP_NH_INSTALL, nhe); | |
890 | if (fpm_nl_enqueue(fna->fnc, fna->ctx) == -1) { | |
891 | /* Our buffers are full, lets give it some cycles. */ | |
892 | fna->complete = false; | |
893 | return HASHWALK_ABORT; | |
894 | } | |
895 | ||
896 | /* Mark group as sent, so it doesn't get sent again. */ | |
897 | SET_FLAG(nhe->flags, NEXTHOP_GROUP_FPM); | |
898 | ||
899 | return HASHWALK_CONTINUE; | |
900 | } | |
901 | ||
902 | static int fpm_nhg_send(struct thread *t) | |
903 | { | |
904 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
905 | struct fpm_nhg_arg fna; | |
906 | ||
907 | fna.fnc = fnc; | |
908 | fna.ctx = dplane_ctx_alloc(); | |
909 | fna.complete = true; | |
910 | ||
911 | /* Send next hops. */ | |
912 | hash_walk(zrouter.nhgs_id, fpm_nhg_send_cb, &fna); | |
913 | ||
914 | /* `free()` allocated memory. */ | |
915 | dplane_ctx_fini(&fna.ctx); | |
916 | ||
917 | /* We are done sending next hops, lets install the routes now. */ | |
55eb9d4d RZ |
918 | if (fna.complete) { |
919 | WALK_FINISH(fnc, FNE_NHG_FINISHED); | |
e41e0f81 RZ |
920 | thread_add_timer(zrouter.master, fpm_rib_reset, fnc, 0, |
921 | &fnc->t_ribreset); | |
55eb9d4d | 922 | } else /* Otherwise reschedule next hop group again. */ |
981ca597 RZ |
923 | thread_add_timer(zrouter.master, fpm_nhg_send, fnc, 0, |
924 | &fnc->t_nhgwalk); | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
018e77bc RZ |
929 | /** |
930 | * Send all RIB installed routes to the connected data plane. | |
931 | */ | |
932 | static int fpm_rib_send(struct thread *t) | |
933 | { | |
934 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
935 | rib_dest_t *dest; | |
936 | struct route_node *rn; | |
937 | struct route_table *rt; | |
938 | struct zebra_dplane_ctx *ctx; | |
939 | rib_tables_iter_t rt_iter; | |
940 | ||
941 | /* Allocate temporary context for all transactions. */ | |
942 | ctx = dplane_ctx_alloc(); | |
943 | ||
944 | rt_iter.state = RIB_TABLES_ITER_S_INIT; | |
945 | while ((rt = rib_tables_iter_next(&rt_iter))) { | |
946 | for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) { | |
947 | dest = rib_dest_from_rnode(rn); | |
948 | /* Skip bad route entries. */ | |
a50404aa | 949 | if (dest == NULL || dest->selected_fib == NULL) |
018e77bc | 950 | continue; |
018e77bc RZ |
951 | |
952 | /* Check for already sent routes. */ | |
a50404aa | 953 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)) |
018e77bc | 954 | continue; |
018e77bc RZ |
955 | |
956 | /* Enqueue route install. */ | |
957 | dplane_ctx_reset(ctx); | |
958 | dplane_ctx_route_init(ctx, DPLANE_OP_ROUTE_INSTALL, rn, | |
959 | dest->selected_fib); | |
960 | if (fpm_nl_enqueue(fnc, ctx) == -1) { | |
961 | /* Free the temporary allocated context. */ | |
962 | dplane_ctx_fini(&ctx); | |
963 | ||
018e77bc RZ |
964 | thread_add_timer(zrouter.master, fpm_rib_send, |
965 | fnc, 1, &fnc->t_ribwalk); | |
966 | return 0; | |
967 | } | |
968 | ||
969 | /* Mark as sent. */ | |
970 | SET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
971 | } | |
972 | } | |
973 | ||
974 | /* Free the temporary allocated context. */ | |
975 | dplane_ctx_fini(&ctx); | |
976 | ||
977 | /* All RIB routes sent! */ | |
55eb9d4d | 978 | WALK_FINISH(fnc, FNE_RIB_FINISHED); |
018e77bc | 979 | |
e41e0f81 RZ |
980 | /* Schedule next event: RMAC reset. */ |
981 | thread_add_event(zrouter.master, fpm_rmac_reset, fnc, 0, | |
982 | &fnc->t_rmacreset); | |
983 | ||
018e77bc RZ |
984 | return 0; |
985 | } | |
986 | ||
bda10adf RZ |
987 | /* |
988 | * The next three functions will handle RMAC enqueue. | |
989 | */ | |
990 | struct fpm_rmac_arg { | |
991 | struct zebra_dplane_ctx *ctx; | |
992 | struct fpm_nl_ctx *fnc; | |
993 | zebra_l3vni_t *zl3vni; | |
55eb9d4d | 994 | bool complete; |
bda10adf RZ |
995 | }; |
996 | ||
9d5c3268 | 997 | static void fpm_enqueue_rmac_table(struct hash_bucket *backet, void *arg) |
bda10adf RZ |
998 | { |
999 | struct fpm_rmac_arg *fra = arg; | |
1000 | zebra_mac_t *zrmac = backet->data; | |
1001 | struct zebra_if *zif = fra->zl3vni->vxlan_if->info; | |
1002 | const struct zebra_l2info_vxlan *vxl = &zif->l2info.vxl; | |
1003 | struct zebra_if *br_zif; | |
1004 | vlanid_t vid; | |
1005 | bool sticky; | |
1006 | ||
1007 | /* Entry already sent. */ | |
55eb9d4d | 1008 | if (CHECK_FLAG(zrmac->flags, ZEBRA_MAC_FPM_SENT) || !fra->complete) |
bda10adf RZ |
1009 | return; |
1010 | ||
1011 | sticky = !!CHECK_FLAG(zrmac->flags, | |
1012 | (ZEBRA_MAC_STICKY | ZEBRA_MAC_REMOTE_DEF_GW)); | |
1013 | br_zif = (struct zebra_if *)(zif->brslave_info.br_if->info); | |
1014 | vid = IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(br_zif) ? vxl->access_vlan : 0; | |
1015 | ||
1016 | dplane_ctx_reset(fra->ctx); | |
1017 | dplane_ctx_set_op(fra->ctx, DPLANE_OP_MAC_INSTALL); | |
1018 | dplane_mac_init(fra->ctx, fra->zl3vni->vxlan_if, | |
f2a0ba3a | 1019 | zif->brslave_info.br_if, vid, |
f188e68e AK |
1020 | &zrmac->macaddr, zrmac->fwd_info.r_vtep_ip, sticky, |
1021 | 0 /*nhg*/, 0 /*update_flags*/); | |
bda10adf | 1022 | if (fpm_nl_enqueue(fra->fnc, fra->ctx) == -1) { |
bda10adf RZ |
1023 | thread_add_timer(zrouter.master, fpm_rmac_send, |
1024 | fra->fnc, 1, &fra->fnc->t_rmacwalk); | |
55eb9d4d | 1025 | fra->complete = false; |
bda10adf RZ |
1026 | } |
1027 | } | |
1028 | ||
9d5c3268 | 1029 | static void fpm_enqueue_l3vni_table(struct hash_bucket *backet, void *arg) |
bda10adf RZ |
1030 | { |
1031 | struct fpm_rmac_arg *fra = arg; | |
1032 | zebra_l3vni_t *zl3vni = backet->data; | |
1033 | ||
1034 | fra->zl3vni = zl3vni; | |
1035 | hash_iterate(zl3vni->rmac_table, fpm_enqueue_rmac_table, zl3vni); | |
1036 | } | |
1037 | ||
1038 | static int fpm_rmac_send(struct thread *t) | |
1039 | { | |
1040 | struct fpm_rmac_arg fra; | |
1041 | ||
1042 | fra.fnc = THREAD_ARG(t); | |
1043 | fra.ctx = dplane_ctx_alloc(); | |
55eb9d4d | 1044 | fra.complete = true; |
bda10adf RZ |
1045 | hash_iterate(zrouter.l3vni_table, fpm_enqueue_l3vni_table, &fra); |
1046 | dplane_ctx_fini(&fra.ctx); | |
1047 | ||
55eb9d4d RZ |
1048 | /* RMAC walk completed. */ |
1049 | if (fra.complete) | |
1050 | WALK_FINISH(fra.fnc, FNE_RMAC_FINISHED); | |
1051 | ||
bda10adf RZ |
1052 | return 0; |
1053 | } | |
1054 | ||
981ca597 RZ |
1055 | /* |
1056 | * Resets the next hop FPM flags so we send all next hops again. | |
1057 | */ | |
1058 | static void fpm_nhg_reset_cb(struct hash_bucket *bucket, void *arg) | |
1059 | { | |
1060 | struct nhg_hash_entry *nhe = bucket->data; | |
1061 | ||
1062 | /* Unset FPM installation flag so it gets installed again. */ | |
1063 | UNSET_FLAG(nhe->flags, NEXTHOP_GROUP_FPM); | |
1064 | } | |
1065 | ||
1066 | static int fpm_nhg_reset(struct thread *t) | |
1067 | { | |
55eb9d4d RZ |
1068 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); |
1069 | ||
1070 | fnc->nhg_complete = false; | |
981ca597 | 1071 | hash_iterate(zrouter.nhgs_id, fpm_nhg_reset_cb, NULL); |
e41e0f81 RZ |
1072 | |
1073 | /* Schedule next step: send next hop groups. */ | |
1074 | thread_add_event(zrouter.master, fpm_nhg_send, fnc, 0, &fnc->t_nhgwalk); | |
1075 | ||
981ca597 RZ |
1076 | return 0; |
1077 | } | |
1078 | ||
018e77bc RZ |
1079 | /** |
1080 | * Resets the RIB FPM flags so we send all routes again. | |
1081 | */ | |
1082 | static int fpm_rib_reset(struct thread *t) | |
1083 | { | |
1084 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1085 | rib_dest_t *dest; | |
1086 | struct route_node *rn; | |
1087 | struct route_table *rt; | |
1088 | rib_tables_iter_t rt_iter; | |
1089 | ||
1090 | fnc->rib_complete = false; | |
1091 | ||
1092 | rt_iter.state = RIB_TABLES_ITER_S_INIT; | |
1093 | while ((rt = rib_tables_iter_next(&rt_iter))) { | |
1094 | for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) { | |
1095 | dest = rib_dest_from_rnode(rn); | |
1096 | /* Skip bad route entries. */ | |
1097 | if (dest == NULL) | |
1098 | continue; | |
1099 | ||
1100 | UNSET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1101 | } | |
1102 | } | |
1103 | ||
e41e0f81 RZ |
1104 | /* Schedule next step: send RIB routes. */ |
1105 | thread_add_event(zrouter.master, fpm_rib_send, fnc, 0, &fnc->t_ribwalk); | |
1106 | ||
018e77bc RZ |
1107 | return 0; |
1108 | } | |
1109 | ||
bda10adf RZ |
1110 | /* |
1111 | * The next three function will handle RMAC table reset. | |
1112 | */ | |
9d5c3268 | 1113 | static void fpm_unset_rmac_table(struct hash_bucket *backet, void *arg) |
bda10adf RZ |
1114 | { |
1115 | zebra_mac_t *zrmac = backet->data; | |
1116 | ||
1117 | UNSET_FLAG(zrmac->flags, ZEBRA_MAC_FPM_SENT); | |
1118 | } | |
1119 | ||
9d5c3268 | 1120 | static void fpm_unset_l3vni_table(struct hash_bucket *backet, void *arg) |
bda10adf RZ |
1121 | { |
1122 | zebra_l3vni_t *zl3vni = backet->data; | |
1123 | ||
1124 | hash_iterate(zl3vni->rmac_table, fpm_unset_rmac_table, zl3vni); | |
1125 | } | |
1126 | ||
1127 | static int fpm_rmac_reset(struct thread *t) | |
1128 | { | |
55eb9d4d RZ |
1129 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); |
1130 | ||
1131 | fnc->rmac_complete = false; | |
bda10adf RZ |
1132 | hash_iterate(zrouter.l3vni_table, fpm_unset_l3vni_table, NULL); |
1133 | ||
e41e0f81 RZ |
1134 | /* Schedule next event: send RMAC entries. */ |
1135 | thread_add_event(zrouter.master, fpm_rmac_send, fnc, 0, | |
1136 | &fnc->t_rmacwalk); | |
1137 | ||
bda10adf RZ |
1138 | return 0; |
1139 | } | |
1140 | ||
ba803a2f RZ |
1141 | static int fpm_process_queue(struct thread *t) |
1142 | { | |
1143 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1144 | struct zebra_dplane_ctx *ctx; | |
1145 | ||
1146 | frr_mutex_lock_autounlock(&fnc->ctxqueue_mutex); | |
1147 | ||
1148 | while (true) { | |
1149 | /* No space available yet. */ | |
1150 | if (STREAM_WRITEABLE(fnc->obuf) < NL_PKT_BUF_SIZE) | |
1151 | break; | |
1152 | ||
1153 | /* Dequeue next item or quit processing. */ | |
1154 | ctx = dplane_ctx_dequeue(&fnc->ctxqueue); | |
1155 | if (ctx == NULL) | |
1156 | break; | |
1157 | ||
1158 | fpm_nl_enqueue(fnc, ctx); | |
1159 | ||
1160 | /* Account the processed entries. */ | |
c871e6c9 RZ |
1161 | atomic_fetch_add_explicit(&fnc->counters.dplane_contexts, 1, |
1162 | memory_order_relaxed); | |
1163 | atomic_fetch_sub_explicit(&fnc->counters.ctxqueue_len, 1, | |
1164 | memory_order_relaxed); | |
ba803a2f RZ |
1165 | |
1166 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); | |
1167 | dplane_provider_enqueue_out_ctx(fnc->prov, ctx); | |
1168 | } | |
1169 | ||
1170 | /* Check for more items in the queue. */ | |
c871e6c9 RZ |
1171 | if (atomic_load_explicit(&fnc->counters.ctxqueue_len, |
1172 | memory_order_relaxed) | |
1173 | > 0) | |
ba803a2f RZ |
1174 | thread_add_timer(fnc->fthread->master, fpm_process_queue, |
1175 | fnc, 0, &fnc->t_dequeue); | |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
3bdd7fca RZ |
1180 | /** |
1181 | * Handles external (e.g. CLI, data plane or others) events. | |
1182 | */ | |
1183 | static int fpm_process_event(struct thread *t) | |
1184 | { | |
1185 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1186 | int event = THREAD_VAL(t); | |
1187 | ||
1188 | switch (event) { | |
1189 | case FNE_DISABLE: | |
e5e444d8 | 1190 | zlog_info("%s: manual FPM disable event", __func__); |
3bdd7fca | 1191 | fnc->disabled = true; |
c871e6c9 RZ |
1192 | atomic_fetch_add_explicit(&fnc->counters.user_disables, 1, |
1193 | memory_order_relaxed); | |
3bdd7fca RZ |
1194 | |
1195 | /* Call reconnect to disable timers and clean up context. */ | |
1196 | fpm_reconnect(fnc); | |
1197 | break; | |
1198 | ||
1199 | case FNE_RECONNECT: | |
e5e444d8 | 1200 | zlog_info("%s: manual FPM reconnect event", __func__); |
3bdd7fca | 1201 | fnc->disabled = false; |
c871e6c9 RZ |
1202 | atomic_fetch_add_explicit(&fnc->counters.user_configures, 1, |
1203 | memory_order_relaxed); | |
3bdd7fca RZ |
1204 | fpm_reconnect(fnc); |
1205 | break; | |
1206 | ||
6cc059cd | 1207 | case FNE_RESET_COUNTERS: |
e5e444d8 | 1208 | zlog_info("%s: manual FPM counters reset event", __func__); |
6cc059cd RZ |
1209 | memset(&fnc->counters, 0, sizeof(fnc->counters)); |
1210 | break; | |
1211 | ||
b55ab92a RZ |
1212 | case FNE_TOGGLE_NHG: |
1213 | zlog_info("%s: toggle next hop groups support", __func__); | |
1214 | fnc->use_nhg = !fnc->use_nhg; | |
1215 | fpm_reconnect(fnc); | |
1216 | break; | |
1217 | ||
a2032324 RZ |
1218 | case FNE_INTERNAL_RECONNECT: |
1219 | fpm_reconnect(fnc); | |
1220 | break; | |
1221 | ||
55eb9d4d RZ |
1222 | case FNE_NHG_FINISHED: |
1223 | if (IS_ZEBRA_DEBUG_FPM) | |
1224 | zlog_debug("%s: next hop groups walk finished", | |
1225 | __func__); | |
1226 | ||
1227 | fnc->nhg_complete = true; | |
1228 | break; | |
1229 | case FNE_RIB_FINISHED: | |
1230 | if (IS_ZEBRA_DEBUG_FPM) | |
1231 | zlog_debug("%s: RIB walk finished", __func__); | |
1232 | ||
1233 | fnc->rib_complete = true; | |
1234 | break; | |
1235 | case FNE_RMAC_FINISHED: | |
1236 | if (IS_ZEBRA_DEBUG_FPM) | |
1237 | zlog_debug("%s: RMAC walk finished", __func__); | |
1238 | ||
1239 | fnc->rmac_complete = true; | |
1240 | break; | |
1241 | ||
3bdd7fca | 1242 | default: |
e5e444d8 RZ |
1243 | if (IS_ZEBRA_DEBUG_FPM) |
1244 | zlog_debug("%s: unhandled event %d", __func__, event); | |
3bdd7fca RZ |
1245 | break; |
1246 | } | |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | ||
d35f447d RZ |
1251 | /* |
1252 | * Data plane functions. | |
1253 | */ | |
1254 | static int fpm_nl_start(struct zebra_dplane_provider *prov) | |
1255 | { | |
1256 | struct fpm_nl_ctx *fnc; | |
1257 | ||
1258 | fnc = dplane_provider_get_data(prov); | |
1259 | fnc->fthread = frr_pthread_new(NULL, prov_name, prov_name); | |
1260 | assert(frr_pthread_run(fnc->fthread, NULL) == 0); | |
1261 | fnc->ibuf = stream_new(NL_PKT_BUF_SIZE); | |
1262 | fnc->obuf = stream_new(NL_PKT_BUF_SIZE * 128); | |
1263 | pthread_mutex_init(&fnc->obuf_mutex, NULL); | |
1264 | fnc->socket = -1; | |
3bdd7fca | 1265 | fnc->disabled = true; |
ba803a2f RZ |
1266 | fnc->prov = prov; |
1267 | TAILQ_INIT(&fnc->ctxqueue); | |
1268 | pthread_mutex_init(&fnc->ctxqueue_mutex, NULL); | |
d35f447d | 1269 | |
b55ab92a RZ |
1270 | /* Set default values. */ |
1271 | fnc->use_nhg = true; | |
1272 | ||
d35f447d RZ |
1273 | return 0; |
1274 | } | |
1275 | ||
98a87504 | 1276 | static int fpm_nl_finish_early(struct fpm_nl_ctx *fnc) |
d35f447d | 1277 | { |
98a87504 | 1278 | /* Disable all events and close socket. */ |
981ca597 RZ |
1279 | THREAD_OFF(fnc->t_nhgreset); |
1280 | THREAD_OFF(fnc->t_nhgwalk); | |
98a87504 RZ |
1281 | THREAD_OFF(fnc->t_ribreset); |
1282 | THREAD_OFF(fnc->t_ribwalk); | |
1283 | THREAD_OFF(fnc->t_rmacreset); | |
1284 | THREAD_OFF(fnc->t_rmacwalk); | |
1285 | thread_cancel_async(fnc->fthread->master, &fnc->t_read, NULL); | |
1286 | thread_cancel_async(fnc->fthread->master, &fnc->t_write, NULL); | |
1287 | thread_cancel_async(fnc->fthread->master, &fnc->t_connect, NULL); | |
d35f447d | 1288 | |
98a87504 RZ |
1289 | if (fnc->socket != -1) { |
1290 | close(fnc->socket); | |
1291 | fnc->socket = -1; | |
1292 | } | |
1293 | ||
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static int fpm_nl_finish_late(struct fpm_nl_ctx *fnc) | |
1298 | { | |
1299 | /* Stop the running thread. */ | |
1300 | frr_pthread_stop(fnc->fthread, NULL); | |
1301 | ||
1302 | /* Free all allocated resources. */ | |
1303 | pthread_mutex_destroy(&fnc->obuf_mutex); | |
1304 | pthread_mutex_destroy(&fnc->ctxqueue_mutex); | |
d35f447d RZ |
1305 | stream_free(fnc->ibuf); |
1306 | stream_free(fnc->obuf); | |
98a87504 RZ |
1307 | free(gfnc); |
1308 | gfnc = NULL; | |
d35f447d RZ |
1309 | |
1310 | return 0; | |
1311 | } | |
1312 | ||
98a87504 RZ |
1313 | static int fpm_nl_finish(struct zebra_dplane_provider *prov, bool early) |
1314 | { | |
1315 | struct fpm_nl_ctx *fnc; | |
1316 | ||
1317 | fnc = dplane_provider_get_data(prov); | |
1318 | if (early) | |
1319 | return fpm_nl_finish_early(fnc); | |
1320 | ||
1321 | return fpm_nl_finish_late(fnc); | |
1322 | } | |
1323 | ||
d35f447d RZ |
1324 | static int fpm_nl_process(struct zebra_dplane_provider *prov) |
1325 | { | |
1326 | struct zebra_dplane_ctx *ctx; | |
1327 | struct fpm_nl_ctx *fnc; | |
1328 | int counter, limit; | |
edfeff42 | 1329 | uint64_t cur_queue, peak_queue; |
d35f447d RZ |
1330 | |
1331 | fnc = dplane_provider_get_data(prov); | |
1332 | limit = dplane_provider_get_work_limit(prov); | |
1333 | for (counter = 0; counter < limit; counter++) { | |
1334 | ctx = dplane_provider_dequeue_in_ctx(prov); | |
1335 | if (ctx == NULL) | |
1336 | break; | |
1337 | ||
1338 | /* | |
1339 | * Skip all notifications if not connected, we'll walk the RIB | |
1340 | * anyway. | |
1341 | */ | |
6cc059cd | 1342 | if (fnc->socket != -1 && fnc->connecting == false) { |
ba803a2f RZ |
1343 | frr_mutex_lock_autounlock(&fnc->ctxqueue_mutex); |
1344 | dplane_ctx_enqueue_tail(&fnc->ctxqueue, ctx); | |
1345 | ||
1346 | /* Account the number of contexts. */ | |
c871e6c9 RZ |
1347 | atomic_fetch_add_explicit(&fnc->counters.ctxqueue_len, |
1348 | 1, memory_order_relaxed); | |
1349 | cur_queue = atomic_load_explicit( | |
1350 | &fnc->counters.ctxqueue_len, | |
1351 | memory_order_relaxed); | |
1352 | peak_queue = atomic_load_explicit( | |
1353 | &fnc->counters.ctxqueue_len_peak, | |
1354 | memory_order_relaxed); | |
edfeff42 | 1355 | if (peak_queue < cur_queue) |
c871e6c9 RZ |
1356 | atomic_store_explicit( |
1357 | &fnc->counters.ctxqueue_len_peak, | |
1358 | peak_queue, memory_order_relaxed); | |
ba803a2f | 1359 | continue; |
6cc059cd RZ |
1360 | } |
1361 | ||
d35f447d RZ |
1362 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); |
1363 | dplane_provider_enqueue_out_ctx(prov, ctx); | |
1364 | } | |
1365 | ||
c871e6c9 RZ |
1366 | if (atomic_load_explicit(&fnc->counters.ctxqueue_len, |
1367 | memory_order_relaxed) | |
1368 | > 0) | |
ba803a2f RZ |
1369 | thread_add_timer(fnc->fthread->master, fpm_process_queue, |
1370 | fnc, 0, &fnc->t_dequeue); | |
1371 | ||
d35f447d RZ |
1372 | return 0; |
1373 | } | |
1374 | ||
1375 | static int fpm_nl_new(struct thread_master *tm) | |
1376 | { | |
1377 | struct zebra_dplane_provider *prov = NULL; | |
d35f447d RZ |
1378 | int rv; |
1379 | ||
3bdd7fca | 1380 | gfnc = calloc(1, sizeof(*gfnc)); |
d35f447d RZ |
1381 | rv = dplane_provider_register(prov_name, DPLANE_PRIO_POSTPROCESS, |
1382 | DPLANE_PROV_FLAG_THREADED, fpm_nl_start, | |
3bdd7fca | 1383 | fpm_nl_process, fpm_nl_finish, gfnc, |
d35f447d RZ |
1384 | &prov); |
1385 | ||
1386 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1387 | zlog_debug("%s register status: %d", prov_name, rv); | |
1388 | ||
612c2c15 | 1389 | install_node(&fpm_node); |
6cc059cd RZ |
1390 | install_element(ENABLE_NODE, &fpm_show_counters_cmd); |
1391 | install_element(ENABLE_NODE, &fpm_show_counters_json_cmd); | |
1392 | install_element(ENABLE_NODE, &fpm_reset_counters_cmd); | |
3bdd7fca RZ |
1393 | install_element(CONFIG_NODE, &fpm_set_address_cmd); |
1394 | install_element(CONFIG_NODE, &no_fpm_set_address_cmd); | |
b55ab92a RZ |
1395 | install_element(CONFIG_NODE, &fpm_use_nhg_cmd); |
1396 | install_element(CONFIG_NODE, &no_fpm_use_nhg_cmd); | |
3bdd7fca | 1397 | |
d35f447d RZ |
1398 | return 0; |
1399 | } | |
1400 | ||
1401 | static int fpm_nl_init(void) | |
1402 | { | |
1403 | hook_register(frr_late_init, fpm_nl_new); | |
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | FRR_MODULE_SETUP( | |
1408 | .name = "dplane_fpm_nl", | |
1409 | .version = "0.0.1", | |
1410 | .description = "Data plane plugin for FPM using netlink.", | |
1411 | .init = fpm_nl_init, | |
1412 | ) |