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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" |
bda10adf | 47 | #include "zebra/zebra_vxlan_private.h" |
d35f447d RZ |
48 | #include "zebra/kernel_netlink.h" |
49 | #include "zebra/rt_netlink.h" | |
50 | #include "zebra/debug.h" | |
51 | ||
52 | #define SOUTHBOUND_DEFAULT_ADDR INADDR_LOOPBACK | |
53 | #define SOUTHBOUND_DEFAULT_PORT 2620 | |
54 | ||
a179ba35 RZ |
55 | /** |
56 | * FPM header: | |
57 | * { | |
58 | * version: 1 byte (always 1), | |
59 | * type: 1 byte (1 for netlink, 2 protobuf), | |
60 | * len: 2 bytes (network order), | |
61 | * } | |
62 | * | |
63 | * This header is used with any format to tell the users how many bytes to | |
64 | * expect. | |
65 | */ | |
66 | #define FPM_HEADER_SIZE 4 | |
67 | ||
d35f447d RZ |
68 | static const char *prov_name = "dplane_fpm_nl"; |
69 | ||
70 | struct fpm_nl_ctx { | |
71 | /* data plane connection. */ | |
72 | int socket; | |
3bdd7fca | 73 | bool disabled; |
d35f447d | 74 | bool connecting; |
018e77bc | 75 | bool rib_complete; |
bda10adf | 76 | bool rmac_complete; |
b55ab92a | 77 | bool use_nhg; |
d35f447d RZ |
78 | struct sockaddr_storage addr; |
79 | ||
80 | /* data plane buffers. */ | |
81 | struct stream *ibuf; | |
82 | struct stream *obuf; | |
83 | pthread_mutex_t obuf_mutex; | |
84 | ||
ba803a2f RZ |
85 | /* |
86 | * data plane context queue: | |
87 | * When a FPM server connection becomes a bottleneck, we must keep the | |
88 | * data plane contexts until we get a chance to process them. | |
89 | */ | |
90 | struct dplane_ctx_q ctxqueue; | |
91 | pthread_mutex_t ctxqueue_mutex; | |
92 | ||
d35f447d | 93 | /* data plane events. */ |
ba803a2f | 94 | struct zebra_dplane_provider *prov; |
d35f447d RZ |
95 | struct frr_pthread *fthread; |
96 | struct thread *t_connect; | |
97 | struct thread *t_read; | |
98 | struct thread *t_write; | |
3bdd7fca | 99 | struct thread *t_event; |
ba803a2f | 100 | struct thread *t_dequeue; |
018e77bc RZ |
101 | |
102 | /* zebra events. */ | |
981ca597 RZ |
103 | struct thread *t_nhgreset; |
104 | struct thread *t_nhgwalk; | |
018e77bc RZ |
105 | struct thread *t_ribreset; |
106 | struct thread *t_ribwalk; | |
bda10adf RZ |
107 | struct thread *t_rmacreset; |
108 | struct thread *t_rmacwalk; | |
6cc059cd RZ |
109 | |
110 | /* Statistic counters. */ | |
111 | struct { | |
112 | /* Amount of bytes read into ibuf. */ | |
770a8d28 | 113 | _Atomic uint32_t bytes_read; |
6cc059cd | 114 | /* Amount of bytes written from obuf. */ |
770a8d28 | 115 | _Atomic uint32_t bytes_sent; |
ad4d1022 | 116 | /* Output buffer current usage. */ |
770a8d28 | 117 | _Atomic uint32_t obuf_bytes; |
ad4d1022 | 118 | /* Output buffer peak usage. */ |
770a8d28 | 119 | _Atomic uint32_t obuf_peak; |
6cc059cd RZ |
120 | |
121 | /* Amount of connection closes. */ | |
770a8d28 | 122 | _Atomic uint32_t connection_closes; |
6cc059cd | 123 | /* Amount of connection errors. */ |
770a8d28 | 124 | _Atomic uint32_t connection_errors; |
6cc059cd RZ |
125 | |
126 | /* Amount of user configurations: FNE_RECONNECT. */ | |
770a8d28 | 127 | _Atomic uint32_t user_configures; |
6cc059cd | 128 | /* Amount of user disable requests: FNE_DISABLE. */ |
770a8d28 | 129 | _Atomic uint32_t user_disables; |
6cc059cd RZ |
130 | |
131 | /* Amount of data plane context processed. */ | |
770a8d28 | 132 | _Atomic uint32_t dplane_contexts; |
ba803a2f | 133 | /* Amount of data plane contexts enqueued. */ |
770a8d28 | 134 | _Atomic uint32_t ctxqueue_len; |
ba803a2f | 135 | /* Peak amount of data plane contexts enqueued. */ |
770a8d28 | 136 | _Atomic uint32_t ctxqueue_len_peak; |
6cc059cd RZ |
137 | |
138 | /* Amount of buffer full events. */ | |
770a8d28 | 139 | _Atomic uint32_t buffer_full; |
6cc059cd | 140 | } counters; |
770a8d28 | 141 | } *gfnc; |
3bdd7fca RZ |
142 | |
143 | enum fpm_nl_events { | |
144 | /* Ask for FPM to reconnect the external server. */ | |
145 | FNE_RECONNECT, | |
146 | /* Disable FPM. */ | |
147 | FNE_DISABLE, | |
6cc059cd RZ |
148 | /* Reset counters. */ |
149 | FNE_RESET_COUNTERS, | |
b55ab92a RZ |
150 | /* Toggle next hop group feature. */ |
151 | FNE_TOGGLE_NHG, | |
d35f447d RZ |
152 | }; |
153 | ||
018e77bc RZ |
154 | /* |
155 | * Prototypes. | |
156 | */ | |
3bdd7fca | 157 | static int fpm_process_event(struct thread *t); |
018e77bc | 158 | static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx); |
981ca597 RZ |
159 | static int fpm_nhg_send(struct thread *t); |
160 | static int fpm_nhg_reset(struct thread *t); | |
018e77bc RZ |
161 | static int fpm_rib_send(struct thread *t); |
162 | static int fpm_rib_reset(struct thread *t); | |
bda10adf RZ |
163 | static int fpm_rmac_send(struct thread *t); |
164 | static int fpm_rmac_reset(struct thread *t); | |
018e77bc | 165 | |
ad4d1022 RZ |
166 | /* |
167 | * Helper functions. | |
168 | */ | |
169 | ||
170 | /** | |
171 | * Reorganizes the data on the buffer so it can fit more data. | |
172 | * | |
173 | * @param s stream pointer. | |
174 | */ | |
175 | static void stream_pulldown(struct stream *s) | |
176 | { | |
177 | size_t rlen = STREAM_READABLE(s); | |
178 | ||
179 | /* No more data, so just move the pointers. */ | |
180 | if (rlen == 0) { | |
181 | stream_reset(s); | |
182 | return; | |
183 | } | |
184 | ||
185 | /* Move the available data to the beginning. */ | |
186 | memmove(s->data, &s->data[s->getp], rlen); | |
187 | s->getp = 0; | |
188 | s->endp = rlen; | |
189 | } | |
190 | ||
3bdd7fca RZ |
191 | /* |
192 | * CLI. | |
193 | */ | |
6cc059cd RZ |
194 | #define FPM_STR "Forwarding Plane Manager configuration\n" |
195 | ||
3bdd7fca RZ |
196 | DEFUN(fpm_set_address, fpm_set_address_cmd, |
197 | "fpm address <A.B.C.D|X:X::X:X> [port (1-65535)]", | |
6cc059cd | 198 | FPM_STR |
3bdd7fca RZ |
199 | "FPM remote listening server address\n" |
200 | "Remote IPv4 FPM server\n" | |
201 | "Remote IPv6 FPM server\n" | |
202 | "FPM remote listening server port\n" | |
203 | "Remote FPM server port\n") | |
204 | { | |
205 | struct sockaddr_in *sin; | |
206 | struct sockaddr_in6 *sin6; | |
207 | uint16_t port = 0; | |
208 | uint8_t naddr[INET6_BUFSIZ]; | |
209 | ||
210 | if (argc == 5) | |
211 | port = strtol(argv[4]->arg, NULL, 10); | |
212 | ||
213 | /* Handle IPv4 addresses. */ | |
214 | if (inet_pton(AF_INET, argv[2]->arg, naddr) == 1) { | |
215 | sin = (struct sockaddr_in *)&gfnc->addr; | |
216 | ||
217 | memset(sin, 0, sizeof(*sin)); | |
218 | sin->sin_family = AF_INET; | |
219 | sin->sin_port = | |
220 | port ? htons(port) : htons(SOUTHBOUND_DEFAULT_PORT); | |
221 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
222 | sin->sin_len = sizeof(*sin); | |
223 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
224 | memcpy(&sin->sin_addr, naddr, sizeof(sin->sin_addr)); | |
225 | ||
226 | goto ask_reconnect; | |
227 | } | |
228 | ||
229 | /* Handle IPv6 addresses. */ | |
230 | if (inet_pton(AF_INET6, argv[2]->arg, naddr) != 1) { | |
231 | vty_out(vty, "%% Invalid address: %s\n", argv[2]->arg); | |
232 | return CMD_WARNING; | |
233 | } | |
234 | ||
235 | sin6 = (struct sockaddr_in6 *)&gfnc->addr; | |
236 | memset(sin6, 0, sizeof(*sin6)); | |
237 | sin6->sin6_family = AF_INET6; | |
238 | sin6->sin6_port = port ? htons(port) : htons(SOUTHBOUND_DEFAULT_PORT); | |
239 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
240 | sin6->sin6_len = sizeof(*sin6); | |
241 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
242 | memcpy(&sin6->sin6_addr, naddr, sizeof(sin6->sin6_addr)); | |
243 | ||
244 | ask_reconnect: | |
245 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
246 | FNE_RECONNECT, &gfnc->t_event); | |
247 | return CMD_SUCCESS; | |
248 | } | |
249 | ||
250 | DEFUN(no_fpm_set_address, no_fpm_set_address_cmd, | |
251 | "no fpm address [<A.B.C.D|X:X::X:X> [port <1-65535>]]", | |
252 | NO_STR | |
6cc059cd | 253 | FPM_STR |
3bdd7fca RZ |
254 | "FPM remote listening server address\n" |
255 | "Remote IPv4 FPM server\n" | |
256 | "Remote IPv6 FPM server\n" | |
257 | "FPM remote listening server port\n" | |
258 | "Remote FPM server port\n") | |
259 | { | |
260 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
261 | FNE_DISABLE, &gfnc->t_event); | |
262 | return CMD_SUCCESS; | |
263 | } | |
264 | ||
b55ab92a RZ |
265 | DEFUN(fpm_use_nhg, fpm_use_nhg_cmd, |
266 | "fpm use-next-hop-groups", | |
267 | FPM_STR | |
268 | "Use netlink next hop groups feature.\n") | |
269 | { | |
270 | /* Already enabled. */ | |
271 | if (gfnc->use_nhg) | |
272 | return CMD_SUCCESS; | |
273 | ||
274 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
275 | FNE_TOGGLE_NHG, &gfnc->t_event); | |
276 | ||
277 | return CMD_SUCCESS; | |
278 | } | |
279 | ||
280 | DEFUN(no_fpm_use_nhg, no_fpm_use_nhg_cmd, | |
281 | "no fpm use-next-hop-groups", | |
282 | NO_STR | |
283 | FPM_STR | |
284 | "Use netlink next hop groups feature.\n") | |
285 | { | |
286 | /* Already disabled. */ | |
287 | if (!gfnc->use_nhg) | |
288 | return CMD_SUCCESS; | |
289 | ||
290 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
291 | FNE_TOGGLE_NHG, &gfnc->t_event); | |
292 | ||
293 | return CMD_SUCCESS; | |
294 | } | |
295 | ||
6cc059cd RZ |
296 | DEFUN(fpm_reset_counters, fpm_reset_counters_cmd, |
297 | "clear fpm counters", | |
298 | CLEAR_STR | |
299 | FPM_STR | |
300 | "FPM statistic counters\n") | |
301 | { | |
302 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
303 | FNE_RESET_COUNTERS, &gfnc->t_event); | |
304 | return CMD_SUCCESS; | |
305 | } | |
306 | ||
307 | DEFUN(fpm_show_counters, fpm_show_counters_cmd, | |
308 | "show fpm counters", | |
309 | SHOW_STR | |
310 | FPM_STR | |
311 | "FPM statistic counters\n") | |
312 | { | |
313 | vty_out(vty, "%30s\n%30s\n", "FPM counters", "============"); | |
314 | ||
315 | #define SHOW_COUNTER(label, counter) \ | |
770a8d28 | 316 | vty_out(vty, "%28s: %u\n", (label), (counter)) |
6cc059cd RZ |
317 | |
318 | SHOW_COUNTER("Input bytes", gfnc->counters.bytes_read); | |
319 | SHOW_COUNTER("Output bytes", gfnc->counters.bytes_sent); | |
ad4d1022 RZ |
320 | SHOW_COUNTER("Output buffer current size", gfnc->counters.obuf_bytes); |
321 | SHOW_COUNTER("Output buffer peak size", gfnc->counters.obuf_peak); | |
6cc059cd RZ |
322 | SHOW_COUNTER("Connection closes", gfnc->counters.connection_closes); |
323 | SHOW_COUNTER("Connection errors", gfnc->counters.connection_errors); | |
324 | SHOW_COUNTER("Data plane items processed", | |
325 | gfnc->counters.dplane_contexts); | |
ba803a2f RZ |
326 | SHOW_COUNTER("Data plane items enqueued", |
327 | gfnc->counters.ctxqueue_len); | |
328 | SHOW_COUNTER("Data plane items queue peak", | |
329 | gfnc->counters.ctxqueue_len_peak); | |
6cc059cd RZ |
330 | SHOW_COUNTER("Buffer full hits", gfnc->counters.buffer_full); |
331 | SHOW_COUNTER("User FPM configurations", gfnc->counters.user_configures); | |
332 | SHOW_COUNTER("User FPM disable requests", gfnc->counters.user_disables); | |
333 | ||
334 | #undef SHOW_COUNTER | |
335 | ||
336 | return CMD_SUCCESS; | |
337 | } | |
338 | ||
339 | DEFUN(fpm_show_counters_json, fpm_show_counters_json_cmd, | |
340 | "show fpm counters json", | |
341 | SHOW_STR | |
342 | FPM_STR | |
343 | "FPM statistic counters\n" | |
344 | JSON_STR) | |
345 | { | |
346 | struct json_object *jo; | |
347 | ||
348 | jo = json_object_new_object(); | |
349 | json_object_int_add(jo, "bytes-read", gfnc->counters.bytes_read); | |
350 | json_object_int_add(jo, "bytes-sent", gfnc->counters.bytes_sent); | |
ad4d1022 RZ |
351 | json_object_int_add(jo, "obuf-bytes", gfnc->counters.obuf_bytes); |
352 | json_object_int_add(jo, "obuf-bytes-peak", gfnc->counters.obuf_peak); | |
a50404aa RZ |
353 | json_object_int_add(jo, "connection-closes", |
354 | gfnc->counters.connection_closes); | |
355 | json_object_int_add(jo, "connection-errors", | |
356 | gfnc->counters.connection_errors); | |
357 | json_object_int_add(jo, "data-plane-contexts", | |
358 | gfnc->counters.dplane_contexts); | |
ba803a2f RZ |
359 | json_object_int_add(jo, "data-plane-contexts-queue", |
360 | gfnc->counters.ctxqueue_len); | |
361 | json_object_int_add(jo, "data-plane-contexts-queue-peak", | |
362 | gfnc->counters.ctxqueue_len_peak); | |
6cc059cd | 363 | json_object_int_add(jo, "buffer-full-hits", gfnc->counters.buffer_full); |
a50404aa RZ |
364 | json_object_int_add(jo, "user-configures", |
365 | gfnc->counters.user_configures); | |
6cc059cd RZ |
366 | json_object_int_add(jo, "user-disables", gfnc->counters.user_disables); |
367 | vty_out(vty, "%s\n", json_object_to_json_string_ext(jo, 0)); | |
368 | json_object_free(jo); | |
369 | ||
370 | return CMD_SUCCESS; | |
371 | } | |
372 | ||
3bdd7fca RZ |
373 | static int fpm_write_config(struct vty *vty) |
374 | { | |
375 | struct sockaddr_in *sin; | |
376 | struct sockaddr_in6 *sin6; | |
377 | int written = 0; | |
378 | char addrstr[INET6_ADDRSTRLEN]; | |
379 | ||
380 | if (gfnc->disabled) | |
381 | return written; | |
382 | ||
383 | switch (gfnc->addr.ss_family) { | |
384 | case AF_INET: | |
385 | written = 1; | |
386 | sin = (struct sockaddr_in *)&gfnc->addr; | |
387 | inet_ntop(AF_INET, &sin->sin_addr, addrstr, sizeof(addrstr)); | |
388 | vty_out(vty, "fpm address %s", addrstr); | |
389 | if (sin->sin_port != htons(SOUTHBOUND_DEFAULT_PORT)) | |
390 | vty_out(vty, " port %d", ntohs(sin->sin_port)); | |
391 | ||
392 | vty_out(vty, "\n"); | |
393 | break; | |
394 | case AF_INET6: | |
395 | written = 1; | |
396 | sin6 = (struct sockaddr_in6 *)&gfnc->addr; | |
397 | inet_ntop(AF_INET, &sin6->sin6_addr, addrstr, sizeof(addrstr)); | |
398 | vty_out(vty, "fpm address %s", addrstr); | |
399 | if (sin6->sin6_port != htons(SOUTHBOUND_DEFAULT_PORT)) | |
400 | vty_out(vty, " port %d", ntohs(sin6->sin6_port)); | |
401 | ||
402 | vty_out(vty, "\n"); | |
403 | break; | |
404 | ||
405 | default: | |
406 | break; | |
407 | } | |
408 | ||
b55ab92a RZ |
409 | if (!gfnc->use_nhg) { |
410 | vty_out(vty, "no fpm use-next-hop-groups\n"); | |
411 | written = 1; | |
412 | } | |
413 | ||
3bdd7fca RZ |
414 | return written; |
415 | } | |
416 | ||
612c2c15 | 417 | static struct cmd_node fpm_node = { |
893d8beb DL |
418 | .name = "fpm", |
419 | .node = FPM_NODE, | |
3bdd7fca | 420 | .prompt = "", |
612c2c15 | 421 | .config_write = fpm_write_config, |
3bdd7fca RZ |
422 | }; |
423 | ||
d35f447d RZ |
424 | /* |
425 | * FPM functions. | |
426 | */ | |
427 | static int fpm_connect(struct thread *t); | |
428 | ||
429 | static void fpm_reconnect(struct fpm_nl_ctx *fnc) | |
430 | { | |
431 | /* Grab the lock to empty the stream and stop the zebra thread. */ | |
432 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
433 | ||
3bdd7fca RZ |
434 | /* Avoid calling close on `-1`. */ |
435 | if (fnc->socket != -1) { | |
436 | close(fnc->socket); | |
437 | fnc->socket = -1; | |
438 | } | |
439 | ||
d35f447d RZ |
440 | stream_reset(fnc->ibuf); |
441 | stream_reset(fnc->obuf); | |
442 | THREAD_OFF(fnc->t_read); | |
443 | THREAD_OFF(fnc->t_write); | |
018e77bc | 444 | |
981ca597 RZ |
445 | thread_cancel_async(zrouter.master, &fnc->t_nhgreset, NULL); |
446 | thread_cancel_async(zrouter.master, &fnc->t_nhgwalk, NULL); | |
c69e7ab7 RZ |
447 | thread_cancel_async(zrouter.master, &fnc->t_ribreset, NULL); |
448 | thread_cancel_async(zrouter.master, &fnc->t_ribwalk, NULL); | |
449 | thread_cancel_async(zrouter.master, &fnc->t_rmacreset, NULL); | |
450 | thread_cancel_async(zrouter.master, &fnc->t_rmacwalk, NULL); | |
018e77bc | 451 | |
3bdd7fca RZ |
452 | /* FPM is disabled, don't attempt to connect. */ |
453 | if (fnc->disabled) | |
454 | return; | |
455 | ||
d35f447d RZ |
456 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, |
457 | &fnc->t_connect); | |
458 | } | |
459 | ||
460 | static int fpm_read(struct thread *t) | |
461 | { | |
462 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
463 | ssize_t rv; | |
464 | ||
465 | /* Let's ignore the input at the moment. */ | |
466 | rv = stream_read_try(fnc->ibuf, fnc->socket, | |
467 | STREAM_WRITEABLE(fnc->ibuf)); | |
468 | if (rv == 0) { | |
c871e6c9 RZ |
469 | atomic_fetch_add_explicit(&fnc->counters.connection_closes, 1, |
470 | memory_order_relaxed); | |
e5e444d8 RZ |
471 | |
472 | if (IS_ZEBRA_DEBUG_FPM) | |
473 | zlog_debug("%s: connection closed", __func__); | |
474 | ||
d35f447d RZ |
475 | fpm_reconnect(fnc); |
476 | return 0; | |
477 | } | |
478 | if (rv == -1) { | |
479 | if (errno == EAGAIN || errno == EWOULDBLOCK | |
480 | || errno == EINTR) | |
481 | return 0; | |
482 | ||
c871e6c9 RZ |
483 | atomic_fetch_add_explicit(&fnc->counters.connection_errors, 1, |
484 | memory_order_relaxed); | |
e5e444d8 RZ |
485 | zlog_warn("%s: connection failure: %s", __func__, |
486 | strerror(errno)); | |
d35f447d RZ |
487 | fpm_reconnect(fnc); |
488 | return 0; | |
489 | } | |
490 | stream_reset(fnc->ibuf); | |
491 | ||
6cc059cd | 492 | /* Account all bytes read. */ |
c871e6c9 RZ |
493 | atomic_fetch_add_explicit(&fnc->counters.bytes_read, rv, |
494 | memory_order_relaxed); | |
6cc059cd | 495 | |
d35f447d RZ |
496 | thread_add_read(fnc->fthread->master, fpm_read, fnc, fnc->socket, |
497 | &fnc->t_read); | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | static int fpm_write(struct thread *t) | |
503 | { | |
504 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
505 | socklen_t statuslen; | |
506 | ssize_t bwritten; | |
507 | int rv, status; | |
508 | size_t btotal; | |
509 | ||
510 | if (fnc->connecting == true) { | |
511 | status = 0; | |
512 | statuslen = sizeof(status); | |
513 | ||
514 | rv = getsockopt(fnc->socket, SOL_SOCKET, SO_ERROR, &status, | |
515 | &statuslen); | |
516 | if (rv == -1 || status != 0) { | |
517 | if (rv != -1) | |
e5e444d8 RZ |
518 | zlog_warn("%s: connection failed: %s", __func__, |
519 | strerror(status)); | |
d35f447d | 520 | else |
e5e444d8 RZ |
521 | zlog_warn("%s: SO_ERROR failed: %s", __func__, |
522 | strerror(status)); | |
d35f447d | 523 | |
c871e6c9 RZ |
524 | atomic_fetch_add_explicit( |
525 | &fnc->counters.connection_errors, 1, | |
526 | memory_order_relaxed); | |
6cc059cd | 527 | |
d35f447d RZ |
528 | fpm_reconnect(fnc); |
529 | return 0; | |
530 | } | |
531 | ||
532 | fnc->connecting = false; | |
018e77bc | 533 | |
b55ab92a RZ |
534 | /* |
535 | * Walk the route tables to send old information before starting | |
536 | * to send updated information. | |
537 | * | |
538 | * NOTE 1: | |
539 | * RIB table walk is called after the next group table walk | |
540 | * ends. | |
541 | * | |
542 | * NOTE 2: | |
543 | * Don't attempt to go through next hop group table if we were | |
544 | * explictly told to not use it. | |
545 | */ | |
546 | if (fnc->use_nhg) | |
547 | thread_add_timer(zrouter.master, fpm_nhg_send, fnc, 0, | |
548 | &fnc->t_nhgwalk); | |
549 | else | |
550 | thread_add_timer(zrouter.master, fpm_rib_send, fnc, 0, | |
551 | &fnc->t_ribwalk); | |
552 | ||
bda10adf RZ |
553 | thread_add_timer(zrouter.master, fpm_rmac_send, fnc, 0, |
554 | &fnc->t_rmacwalk); | |
d35f447d RZ |
555 | } |
556 | ||
557 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
558 | ||
559 | while (true) { | |
560 | /* Stream is empty: reset pointers and return. */ | |
561 | if (STREAM_READABLE(fnc->obuf) == 0) { | |
562 | stream_reset(fnc->obuf); | |
563 | break; | |
564 | } | |
565 | ||
566 | /* Try to write all at once. */ | |
567 | btotal = stream_get_endp(fnc->obuf) - | |
568 | stream_get_getp(fnc->obuf); | |
569 | bwritten = write(fnc->socket, stream_pnt(fnc->obuf), btotal); | |
570 | if (bwritten == 0) { | |
c871e6c9 RZ |
571 | atomic_fetch_add_explicit( |
572 | &fnc->counters.connection_closes, 1, | |
573 | memory_order_relaxed); | |
e5e444d8 RZ |
574 | |
575 | if (IS_ZEBRA_DEBUG_FPM) | |
576 | zlog_debug("%s: connection closed", __func__); | |
d35f447d RZ |
577 | break; |
578 | } | |
579 | if (bwritten == -1) { | |
ad4d1022 RZ |
580 | /* Attempt to continue if blocked by a signal. */ |
581 | if (errno == EINTR) | |
582 | continue; | |
583 | /* Receiver is probably slow, lets give it some time. */ | |
584 | if (errno == EAGAIN || errno == EWOULDBLOCK) | |
d35f447d RZ |
585 | break; |
586 | ||
c871e6c9 RZ |
587 | atomic_fetch_add_explicit( |
588 | &fnc->counters.connection_errors, 1, | |
589 | memory_order_relaxed); | |
e5e444d8 RZ |
590 | zlog_warn("%s: connection failure: %s", __func__, |
591 | strerror(errno)); | |
d35f447d RZ |
592 | fpm_reconnect(fnc); |
593 | break; | |
594 | } | |
595 | ||
6cc059cd | 596 | /* Account all bytes sent. */ |
c871e6c9 RZ |
597 | atomic_fetch_add_explicit(&fnc->counters.bytes_sent, bwritten, |
598 | memory_order_relaxed); | |
6cc059cd | 599 | |
ad4d1022 | 600 | /* Account number of bytes free. */ |
c871e6c9 RZ |
601 | atomic_fetch_sub_explicit(&fnc->counters.obuf_bytes, bwritten, |
602 | memory_order_relaxed); | |
ad4d1022 | 603 | |
d35f447d RZ |
604 | stream_forward_getp(fnc->obuf, (size_t)bwritten); |
605 | } | |
606 | ||
607 | /* Stream is not empty yet, we must schedule more writes. */ | |
608 | if (STREAM_READABLE(fnc->obuf)) { | |
ad4d1022 | 609 | stream_pulldown(fnc->obuf); |
d35f447d RZ |
610 | thread_add_write(fnc->fthread->master, fpm_write, fnc, |
611 | fnc->socket, &fnc->t_write); | |
612 | return 0; | |
613 | } | |
614 | ||
615 | return 0; | |
616 | } | |
617 | ||
618 | static int fpm_connect(struct thread *t) | |
619 | { | |
620 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
3bdd7fca RZ |
621 | struct sockaddr_in *sin = (struct sockaddr_in *)&fnc->addr; |
622 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&fnc->addr; | |
623 | socklen_t slen; | |
d35f447d RZ |
624 | int rv, sock; |
625 | char addrstr[INET6_ADDRSTRLEN]; | |
626 | ||
3bdd7fca | 627 | sock = socket(fnc->addr.ss_family, SOCK_STREAM, 0); |
d35f447d | 628 | if (sock == -1) { |
6cc059cd | 629 | zlog_err("%s: fpm socket failed: %s", __func__, |
d35f447d RZ |
630 | strerror(errno)); |
631 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, | |
632 | &fnc->t_connect); | |
633 | return 0; | |
634 | } | |
635 | ||
636 | set_nonblocking(sock); | |
637 | ||
3bdd7fca RZ |
638 | if (fnc->addr.ss_family == AF_INET) { |
639 | inet_ntop(AF_INET, &sin->sin_addr, addrstr, sizeof(addrstr)); | |
640 | slen = sizeof(*sin); | |
641 | } else { | |
642 | inet_ntop(AF_INET6, &sin6->sin6_addr, addrstr, sizeof(addrstr)); | |
643 | slen = sizeof(*sin6); | |
644 | } | |
d35f447d | 645 | |
e5e444d8 RZ |
646 | if (IS_ZEBRA_DEBUG_FPM) |
647 | zlog_debug("%s: attempting to connect to %s:%d", __func__, | |
648 | addrstr, ntohs(sin->sin_port)); | |
d35f447d | 649 | |
3bdd7fca | 650 | rv = connect(sock, (struct sockaddr *)&fnc->addr, slen); |
d35f447d | 651 | if (rv == -1 && errno != EINPROGRESS) { |
c871e6c9 RZ |
652 | atomic_fetch_add_explicit(&fnc->counters.connection_errors, 1, |
653 | memory_order_relaxed); | |
d35f447d RZ |
654 | close(sock); |
655 | zlog_warn("%s: fpm connection failed: %s", __func__, | |
656 | strerror(errno)); | |
657 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, | |
658 | &fnc->t_connect); | |
659 | return 0; | |
660 | } | |
661 | ||
662 | fnc->connecting = (errno == EINPROGRESS); | |
663 | fnc->socket = sock; | |
664 | thread_add_read(fnc->fthread->master, fpm_read, fnc, sock, | |
665 | &fnc->t_read); | |
666 | thread_add_write(fnc->fthread->master, fpm_write, fnc, sock, | |
667 | &fnc->t_write); | |
668 | ||
018e77bc | 669 | /* Mark all routes as unsent. */ |
981ca597 RZ |
670 | thread_add_timer(zrouter.master, fpm_nhg_reset, fnc, 0, |
671 | &fnc->t_nhgreset); | |
018e77bc RZ |
672 | thread_add_timer(zrouter.master, fpm_rib_reset, fnc, 0, |
673 | &fnc->t_ribreset); | |
bda10adf RZ |
674 | thread_add_timer(zrouter.master, fpm_rmac_reset, fnc, 0, |
675 | &fnc->t_rmacreset); | |
018e77bc | 676 | |
d35f447d RZ |
677 | return 0; |
678 | } | |
679 | ||
680 | /** | |
681 | * Encode data plane operation context into netlink and enqueue it in the FPM | |
682 | * output buffer. | |
683 | * | |
684 | * @param fnc the netlink FPM context. | |
685 | * @param ctx the data plane operation context data. | |
686 | * @return 0 on success or -1 on not enough space. | |
687 | */ | |
688 | static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx) | |
689 | { | |
690 | uint8_t nl_buf[NL_PKT_BUF_SIZE]; | |
691 | size_t nl_buf_len; | |
692 | ssize_t rv; | |
edfeff42 | 693 | uint64_t obytes, obytes_peak; |
b55ab92a RZ |
694 | enum dplane_op_e op = dplane_ctx_get_op(ctx); |
695 | ||
696 | /* | |
697 | * If we were configured to not use next hop groups, then quit as soon | |
698 | * as possible. | |
699 | */ | |
700 | if ((!fnc->use_nhg) | |
701 | && (op == DPLANE_OP_NH_DELETE || op == DPLANE_OP_NH_INSTALL | |
702 | || op == DPLANE_OP_NH_UPDATE)) | |
703 | return 0; | |
d35f447d RZ |
704 | |
705 | nl_buf_len = 0; | |
706 | ||
707 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
708 | ||
b55ab92a | 709 | switch (op) { |
d35f447d RZ |
710 | case DPLANE_OP_ROUTE_UPDATE: |
711 | case DPLANE_OP_ROUTE_DELETE: | |
712 | rv = netlink_route_multipath(RTM_DELROUTE, ctx, nl_buf, | |
b55ab92a RZ |
713 | sizeof(nl_buf), true, |
714 | fnc->use_nhg); | |
d35f447d | 715 | if (rv <= 0) { |
e5e444d8 RZ |
716 | zlog_err("%s: netlink_route_multipath failed", |
717 | __func__); | |
d35f447d RZ |
718 | return 0; |
719 | } | |
720 | ||
721 | nl_buf_len = (size_t)rv; | |
d35f447d RZ |
722 | |
723 | /* UPDATE operations need a INSTALL, otherwise just quit. */ | |
b55ab92a | 724 | if (op == DPLANE_OP_ROUTE_DELETE) |
d35f447d RZ |
725 | break; |
726 | ||
727 | /* FALL THROUGH */ | |
728 | case DPLANE_OP_ROUTE_INSTALL: | |
b55ab92a RZ |
729 | rv = netlink_route_multipath( |
730 | RTM_NEWROUTE, ctx, &nl_buf[nl_buf_len], | |
731 | sizeof(nl_buf) - nl_buf_len, true, fnc->use_nhg); | |
d35f447d | 732 | if (rv <= 0) { |
e5e444d8 RZ |
733 | zlog_err("%s: netlink_route_multipath failed", |
734 | __func__); | |
d35f447d RZ |
735 | return 0; |
736 | } | |
737 | ||
738 | nl_buf_len += (size_t)rv; | |
d35f447d RZ |
739 | break; |
740 | ||
bda10adf RZ |
741 | case DPLANE_OP_MAC_INSTALL: |
742 | case DPLANE_OP_MAC_DELETE: | |
743 | rv = netlink_macfdb_update_ctx(ctx, nl_buf, sizeof(nl_buf)); | |
744 | if (rv <= 0) { | |
e5e444d8 RZ |
745 | zlog_err("%s: netlink_macfdb_update_ctx failed", |
746 | __func__); | |
bda10adf RZ |
747 | return 0; |
748 | } | |
749 | ||
750 | nl_buf_len = (size_t)rv; | |
bda10adf RZ |
751 | break; |
752 | ||
e9a1cd93 RZ |
753 | case DPLANE_OP_NH_DELETE: |
754 | rv = netlink_nexthop_encode(RTM_DELNEXTHOP, ctx, nl_buf, | |
755 | sizeof(nl_buf)); | |
756 | if (rv <= 0) { | |
757 | zlog_err("%s: netlink_nexthop_encode failed", __func__); | |
758 | return 0; | |
759 | } | |
760 | ||
761 | nl_buf_len = (size_t)rv; | |
762 | break; | |
d35f447d RZ |
763 | case DPLANE_OP_NH_INSTALL: |
764 | case DPLANE_OP_NH_UPDATE: | |
e9a1cd93 RZ |
765 | rv = netlink_nexthop_encode(RTM_NEWNEXTHOP, ctx, nl_buf, |
766 | sizeof(nl_buf)); | |
767 | if (rv <= 0) { | |
768 | zlog_err("%s: netlink_nexthop_encode failed", __func__); | |
769 | return 0; | |
770 | } | |
771 | ||
772 | nl_buf_len = (size_t)rv; | |
773 | break; | |
774 | ||
d35f447d RZ |
775 | case DPLANE_OP_LSP_INSTALL: |
776 | case DPLANE_OP_LSP_UPDATE: | |
777 | case DPLANE_OP_LSP_DELETE: | |
778 | case DPLANE_OP_PW_INSTALL: | |
779 | case DPLANE_OP_PW_UNINSTALL: | |
780 | case DPLANE_OP_ADDR_INSTALL: | |
781 | case DPLANE_OP_ADDR_UNINSTALL: | |
d35f447d RZ |
782 | case DPLANE_OP_NEIGH_INSTALL: |
783 | case DPLANE_OP_NEIGH_UPDATE: | |
784 | case DPLANE_OP_NEIGH_DELETE: | |
785 | case DPLANE_OP_VTEP_ADD: | |
786 | case DPLANE_OP_VTEP_DELETE: | |
787 | case DPLANE_OP_SYS_ROUTE_ADD: | |
788 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
789 | case DPLANE_OP_ROUTE_NOTIFY: | |
790 | case DPLANE_OP_LSP_NOTIFY: | |
791 | case DPLANE_OP_NONE: | |
792 | break; | |
793 | ||
794 | default: | |
e5e444d8 RZ |
795 | if (IS_ZEBRA_DEBUG_FPM) |
796 | zlog_debug("%s: unhandled data plane message (%d) %s", | |
797 | __func__, dplane_ctx_get_op(ctx), | |
798 | dplane_op2str(dplane_ctx_get_op(ctx))); | |
d35f447d RZ |
799 | break; |
800 | } | |
801 | ||
802 | /* Skip empty enqueues. */ | |
803 | if (nl_buf_len == 0) | |
804 | return 0; | |
805 | ||
a179ba35 RZ |
806 | /* We must know if someday a message goes beyond 65KiB. */ |
807 | assert((nl_buf_len + FPM_HEADER_SIZE) <= UINT16_MAX); | |
808 | ||
809 | /* Check if we have enough buffer space. */ | |
810 | if (STREAM_WRITEABLE(fnc->obuf) < (nl_buf_len + FPM_HEADER_SIZE)) { | |
c871e6c9 RZ |
811 | atomic_fetch_add_explicit(&fnc->counters.buffer_full, 1, |
812 | memory_order_relaxed); | |
e5e444d8 RZ |
813 | |
814 | if (IS_ZEBRA_DEBUG_FPM) | |
815 | zlog_debug( | |
816 | "%s: buffer full: wants to write %zu but has %zu", | |
817 | __func__, nl_buf_len + FPM_HEADER_SIZE, | |
818 | STREAM_WRITEABLE(fnc->obuf)); | |
819 | ||
a179ba35 RZ |
820 | return -1; |
821 | } | |
822 | ||
d35f447d | 823 | /* |
a179ba35 RZ |
824 | * Fill in the FPM header information. |
825 | * | |
826 | * See FPM_HEADER_SIZE definition for more information. | |
d35f447d RZ |
827 | */ |
828 | stream_putc(fnc->obuf, 1); | |
829 | stream_putc(fnc->obuf, 1); | |
a179ba35 | 830 | stream_putw(fnc->obuf, nl_buf_len + FPM_HEADER_SIZE); |
d35f447d RZ |
831 | |
832 | /* Write current data. */ | |
833 | stream_write(fnc->obuf, nl_buf, (size_t)nl_buf_len); | |
834 | ||
ad4d1022 | 835 | /* Account number of bytes waiting to be written. */ |
c871e6c9 RZ |
836 | atomic_fetch_add_explicit(&fnc->counters.obuf_bytes, |
837 | nl_buf_len + FPM_HEADER_SIZE, | |
838 | memory_order_relaxed); | |
edfeff42 RZ |
839 | obytes = atomic_load_explicit(&fnc->counters.obuf_bytes, |
840 | memory_order_relaxed); | |
841 | obytes_peak = atomic_load_explicit(&fnc->counters.obuf_peak, | |
842 | memory_order_relaxed); | |
843 | if (obytes_peak < obytes) | |
c871e6c9 RZ |
844 | atomic_store_explicit(&fnc->counters.obuf_peak, obytes, |
845 | memory_order_relaxed); | |
ad4d1022 | 846 | |
d35f447d RZ |
847 | /* Tell the thread to start writing. */ |
848 | thread_add_write(fnc->fthread->master, fpm_write, fnc, fnc->socket, | |
849 | &fnc->t_write); | |
850 | ||
851 | return 0; | |
852 | } | |
853 | ||
981ca597 RZ |
854 | /* |
855 | * Next hop walk/send functions. | |
856 | */ | |
857 | struct fpm_nhg_arg { | |
858 | struct zebra_dplane_ctx *ctx; | |
859 | struct fpm_nl_ctx *fnc; | |
860 | bool complete; | |
861 | }; | |
862 | ||
863 | static int fpm_nhg_send_cb(struct hash_bucket *bucket, void *arg) | |
864 | { | |
865 | struct nhg_hash_entry *nhe = bucket->data; | |
866 | struct fpm_nhg_arg *fna = arg; | |
867 | ||
868 | /* This entry was already sent, skip it. */ | |
869 | if (CHECK_FLAG(nhe->flags, NEXTHOP_GROUP_FPM)) | |
870 | return HASHWALK_CONTINUE; | |
871 | ||
872 | /* Reset ctx to reuse allocated memory, take a snapshot and send it. */ | |
873 | dplane_ctx_reset(fna->ctx); | |
874 | dplane_ctx_nexthop_init(fna->ctx, DPLANE_OP_NH_INSTALL, nhe); | |
875 | if (fpm_nl_enqueue(fna->fnc, fna->ctx) == -1) { | |
876 | /* Our buffers are full, lets give it some cycles. */ | |
877 | fna->complete = false; | |
878 | return HASHWALK_ABORT; | |
879 | } | |
880 | ||
881 | /* Mark group as sent, so it doesn't get sent again. */ | |
882 | SET_FLAG(nhe->flags, NEXTHOP_GROUP_FPM); | |
883 | ||
884 | return HASHWALK_CONTINUE; | |
885 | } | |
886 | ||
887 | static int fpm_nhg_send(struct thread *t) | |
888 | { | |
889 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
890 | struct fpm_nhg_arg fna; | |
891 | ||
892 | fna.fnc = fnc; | |
893 | fna.ctx = dplane_ctx_alloc(); | |
894 | fna.complete = true; | |
895 | ||
896 | /* Send next hops. */ | |
897 | hash_walk(zrouter.nhgs_id, fpm_nhg_send_cb, &fna); | |
898 | ||
899 | /* `free()` allocated memory. */ | |
900 | dplane_ctx_fini(&fna.ctx); | |
901 | ||
902 | /* We are done sending next hops, lets install the routes now. */ | |
903 | if (fna.complete) | |
904 | thread_add_timer(zrouter.master, fpm_rib_send, fnc, 0, | |
905 | &fnc->t_ribwalk); | |
906 | else /* Otherwise reschedule next hop group again. */ | |
907 | thread_add_timer(zrouter.master, fpm_nhg_send, fnc, 0, | |
908 | &fnc->t_nhgwalk); | |
909 | ||
910 | return 0; | |
911 | } | |
912 | ||
018e77bc RZ |
913 | /** |
914 | * Send all RIB installed routes to the connected data plane. | |
915 | */ | |
916 | static int fpm_rib_send(struct thread *t) | |
917 | { | |
918 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
919 | rib_dest_t *dest; | |
920 | struct route_node *rn; | |
921 | struct route_table *rt; | |
922 | struct zebra_dplane_ctx *ctx; | |
923 | rib_tables_iter_t rt_iter; | |
924 | ||
925 | /* Allocate temporary context for all transactions. */ | |
926 | ctx = dplane_ctx_alloc(); | |
927 | ||
928 | rt_iter.state = RIB_TABLES_ITER_S_INIT; | |
929 | while ((rt = rib_tables_iter_next(&rt_iter))) { | |
930 | for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) { | |
931 | dest = rib_dest_from_rnode(rn); | |
932 | /* Skip bad route entries. */ | |
a50404aa | 933 | if (dest == NULL || dest->selected_fib == NULL) |
018e77bc | 934 | continue; |
018e77bc RZ |
935 | |
936 | /* Check for already sent routes. */ | |
a50404aa | 937 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)) |
018e77bc | 938 | continue; |
018e77bc RZ |
939 | |
940 | /* Enqueue route install. */ | |
941 | dplane_ctx_reset(ctx); | |
942 | dplane_ctx_route_init(ctx, DPLANE_OP_ROUTE_INSTALL, rn, | |
943 | dest->selected_fib); | |
944 | if (fpm_nl_enqueue(fnc, ctx) == -1) { | |
945 | /* Free the temporary allocated context. */ | |
946 | dplane_ctx_fini(&ctx); | |
947 | ||
018e77bc RZ |
948 | thread_add_timer(zrouter.master, fpm_rib_send, |
949 | fnc, 1, &fnc->t_ribwalk); | |
950 | return 0; | |
951 | } | |
952 | ||
953 | /* Mark as sent. */ | |
954 | SET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
955 | } | |
956 | } | |
957 | ||
958 | /* Free the temporary allocated context. */ | |
959 | dplane_ctx_fini(&ctx); | |
960 | ||
961 | /* All RIB routes sent! */ | |
962 | fnc->rib_complete = true; | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
bda10adf RZ |
967 | /* |
968 | * The next three functions will handle RMAC enqueue. | |
969 | */ | |
970 | struct fpm_rmac_arg { | |
971 | struct zebra_dplane_ctx *ctx; | |
972 | struct fpm_nl_ctx *fnc; | |
973 | zebra_l3vni_t *zl3vni; | |
974 | }; | |
975 | ||
9d5c3268 | 976 | static void fpm_enqueue_rmac_table(struct hash_bucket *backet, void *arg) |
bda10adf RZ |
977 | { |
978 | struct fpm_rmac_arg *fra = arg; | |
979 | zebra_mac_t *zrmac = backet->data; | |
980 | struct zebra_if *zif = fra->zl3vni->vxlan_if->info; | |
981 | const struct zebra_l2info_vxlan *vxl = &zif->l2info.vxl; | |
982 | struct zebra_if *br_zif; | |
983 | vlanid_t vid; | |
984 | bool sticky; | |
985 | ||
986 | /* Entry already sent. */ | |
987 | if (CHECK_FLAG(zrmac->flags, ZEBRA_MAC_FPM_SENT)) | |
988 | return; | |
989 | ||
990 | sticky = !!CHECK_FLAG(zrmac->flags, | |
991 | (ZEBRA_MAC_STICKY | ZEBRA_MAC_REMOTE_DEF_GW)); | |
992 | br_zif = (struct zebra_if *)(zif->brslave_info.br_if->info); | |
993 | vid = IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(br_zif) ? vxl->access_vlan : 0; | |
994 | ||
995 | dplane_ctx_reset(fra->ctx); | |
996 | dplane_ctx_set_op(fra->ctx, DPLANE_OP_MAC_INSTALL); | |
997 | dplane_mac_init(fra->ctx, fra->zl3vni->vxlan_if, | |
f2a0ba3a RZ |
998 | zif->brslave_info.br_if, vid, |
999 | &zrmac->macaddr, zrmac->fwd_info.r_vtep_ip, sticky); | |
bda10adf | 1000 | if (fpm_nl_enqueue(fra->fnc, fra->ctx) == -1) { |
bda10adf RZ |
1001 | thread_add_timer(zrouter.master, fpm_rmac_send, |
1002 | fra->fnc, 1, &fra->fnc->t_rmacwalk); | |
1003 | } | |
1004 | } | |
1005 | ||
9d5c3268 | 1006 | static void fpm_enqueue_l3vni_table(struct hash_bucket *backet, void *arg) |
bda10adf RZ |
1007 | { |
1008 | struct fpm_rmac_arg *fra = arg; | |
1009 | zebra_l3vni_t *zl3vni = backet->data; | |
1010 | ||
1011 | fra->zl3vni = zl3vni; | |
1012 | hash_iterate(zl3vni->rmac_table, fpm_enqueue_rmac_table, zl3vni); | |
1013 | } | |
1014 | ||
1015 | static int fpm_rmac_send(struct thread *t) | |
1016 | { | |
1017 | struct fpm_rmac_arg fra; | |
1018 | ||
1019 | fra.fnc = THREAD_ARG(t); | |
1020 | fra.ctx = dplane_ctx_alloc(); | |
1021 | hash_iterate(zrouter.l3vni_table, fpm_enqueue_l3vni_table, &fra); | |
1022 | dplane_ctx_fini(&fra.ctx); | |
1023 | ||
1024 | return 0; | |
1025 | } | |
1026 | ||
981ca597 RZ |
1027 | /* |
1028 | * Resets the next hop FPM flags so we send all next hops again. | |
1029 | */ | |
1030 | static void fpm_nhg_reset_cb(struct hash_bucket *bucket, void *arg) | |
1031 | { | |
1032 | struct nhg_hash_entry *nhe = bucket->data; | |
1033 | ||
1034 | /* Unset FPM installation flag so it gets installed again. */ | |
1035 | UNSET_FLAG(nhe->flags, NEXTHOP_GROUP_FPM); | |
1036 | } | |
1037 | ||
1038 | static int fpm_nhg_reset(struct thread *t) | |
1039 | { | |
1040 | hash_iterate(zrouter.nhgs_id, fpm_nhg_reset_cb, NULL); | |
1041 | return 0; | |
1042 | } | |
1043 | ||
018e77bc RZ |
1044 | /** |
1045 | * Resets the RIB FPM flags so we send all routes again. | |
1046 | */ | |
1047 | static int fpm_rib_reset(struct thread *t) | |
1048 | { | |
1049 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1050 | rib_dest_t *dest; | |
1051 | struct route_node *rn; | |
1052 | struct route_table *rt; | |
1053 | rib_tables_iter_t rt_iter; | |
1054 | ||
1055 | fnc->rib_complete = false; | |
1056 | ||
1057 | rt_iter.state = RIB_TABLES_ITER_S_INIT; | |
1058 | while ((rt = rib_tables_iter_next(&rt_iter))) { | |
1059 | for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) { | |
1060 | dest = rib_dest_from_rnode(rn); | |
1061 | /* Skip bad route entries. */ | |
1062 | if (dest == NULL) | |
1063 | continue; | |
1064 | ||
1065 | UNSET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
bda10adf RZ |
1072 | /* |
1073 | * The next three function will handle RMAC table reset. | |
1074 | */ | |
9d5c3268 | 1075 | static void fpm_unset_rmac_table(struct hash_bucket *backet, void *arg) |
bda10adf RZ |
1076 | { |
1077 | zebra_mac_t *zrmac = backet->data; | |
1078 | ||
1079 | UNSET_FLAG(zrmac->flags, ZEBRA_MAC_FPM_SENT); | |
1080 | } | |
1081 | ||
9d5c3268 | 1082 | static void fpm_unset_l3vni_table(struct hash_bucket *backet, void *arg) |
bda10adf RZ |
1083 | { |
1084 | zebra_l3vni_t *zl3vni = backet->data; | |
1085 | ||
1086 | hash_iterate(zl3vni->rmac_table, fpm_unset_rmac_table, zl3vni); | |
1087 | } | |
1088 | ||
1089 | static int fpm_rmac_reset(struct thread *t) | |
1090 | { | |
1091 | hash_iterate(zrouter.l3vni_table, fpm_unset_l3vni_table, NULL); | |
1092 | ||
1093 | return 0; | |
1094 | } | |
1095 | ||
ba803a2f RZ |
1096 | static int fpm_process_queue(struct thread *t) |
1097 | { | |
1098 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1099 | struct zebra_dplane_ctx *ctx; | |
1100 | ||
1101 | frr_mutex_lock_autounlock(&fnc->ctxqueue_mutex); | |
1102 | ||
1103 | while (true) { | |
1104 | /* No space available yet. */ | |
1105 | if (STREAM_WRITEABLE(fnc->obuf) < NL_PKT_BUF_SIZE) | |
1106 | break; | |
1107 | ||
1108 | /* Dequeue next item or quit processing. */ | |
1109 | ctx = dplane_ctx_dequeue(&fnc->ctxqueue); | |
1110 | if (ctx == NULL) | |
1111 | break; | |
1112 | ||
1113 | fpm_nl_enqueue(fnc, ctx); | |
1114 | ||
1115 | /* Account the processed entries. */ | |
c871e6c9 RZ |
1116 | atomic_fetch_add_explicit(&fnc->counters.dplane_contexts, 1, |
1117 | memory_order_relaxed); | |
1118 | atomic_fetch_sub_explicit(&fnc->counters.ctxqueue_len, 1, | |
1119 | memory_order_relaxed); | |
ba803a2f RZ |
1120 | |
1121 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); | |
1122 | dplane_provider_enqueue_out_ctx(fnc->prov, ctx); | |
1123 | } | |
1124 | ||
1125 | /* Check for more items in the queue. */ | |
c871e6c9 RZ |
1126 | if (atomic_load_explicit(&fnc->counters.ctxqueue_len, |
1127 | memory_order_relaxed) | |
1128 | > 0) | |
ba803a2f RZ |
1129 | thread_add_timer(fnc->fthread->master, fpm_process_queue, |
1130 | fnc, 0, &fnc->t_dequeue); | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
3bdd7fca RZ |
1135 | /** |
1136 | * Handles external (e.g. CLI, data plane or others) events. | |
1137 | */ | |
1138 | static int fpm_process_event(struct thread *t) | |
1139 | { | |
1140 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1141 | int event = THREAD_VAL(t); | |
1142 | ||
1143 | switch (event) { | |
1144 | case FNE_DISABLE: | |
e5e444d8 | 1145 | zlog_info("%s: manual FPM disable event", __func__); |
3bdd7fca | 1146 | fnc->disabled = true; |
c871e6c9 RZ |
1147 | atomic_fetch_add_explicit(&fnc->counters.user_disables, 1, |
1148 | memory_order_relaxed); | |
3bdd7fca RZ |
1149 | |
1150 | /* Call reconnect to disable timers and clean up context. */ | |
1151 | fpm_reconnect(fnc); | |
1152 | break; | |
1153 | ||
1154 | case FNE_RECONNECT: | |
e5e444d8 | 1155 | zlog_info("%s: manual FPM reconnect event", __func__); |
3bdd7fca | 1156 | fnc->disabled = false; |
c871e6c9 RZ |
1157 | atomic_fetch_add_explicit(&fnc->counters.user_configures, 1, |
1158 | memory_order_relaxed); | |
3bdd7fca RZ |
1159 | fpm_reconnect(fnc); |
1160 | break; | |
1161 | ||
6cc059cd | 1162 | case FNE_RESET_COUNTERS: |
e5e444d8 | 1163 | zlog_info("%s: manual FPM counters reset event", __func__); |
6cc059cd RZ |
1164 | memset(&fnc->counters, 0, sizeof(fnc->counters)); |
1165 | break; | |
1166 | ||
b55ab92a RZ |
1167 | case FNE_TOGGLE_NHG: |
1168 | zlog_info("%s: toggle next hop groups support", __func__); | |
1169 | fnc->use_nhg = !fnc->use_nhg; | |
1170 | fpm_reconnect(fnc); | |
1171 | break; | |
1172 | ||
3bdd7fca | 1173 | default: |
e5e444d8 RZ |
1174 | if (IS_ZEBRA_DEBUG_FPM) |
1175 | zlog_debug("%s: unhandled event %d", __func__, event); | |
3bdd7fca RZ |
1176 | break; |
1177 | } | |
1178 | ||
1179 | return 0; | |
1180 | } | |
1181 | ||
d35f447d RZ |
1182 | /* |
1183 | * Data plane functions. | |
1184 | */ | |
1185 | static int fpm_nl_start(struct zebra_dplane_provider *prov) | |
1186 | { | |
1187 | struct fpm_nl_ctx *fnc; | |
1188 | ||
1189 | fnc = dplane_provider_get_data(prov); | |
1190 | fnc->fthread = frr_pthread_new(NULL, prov_name, prov_name); | |
1191 | assert(frr_pthread_run(fnc->fthread, NULL) == 0); | |
1192 | fnc->ibuf = stream_new(NL_PKT_BUF_SIZE); | |
1193 | fnc->obuf = stream_new(NL_PKT_BUF_SIZE * 128); | |
1194 | pthread_mutex_init(&fnc->obuf_mutex, NULL); | |
1195 | fnc->socket = -1; | |
3bdd7fca | 1196 | fnc->disabled = true; |
ba803a2f RZ |
1197 | fnc->prov = prov; |
1198 | TAILQ_INIT(&fnc->ctxqueue); | |
1199 | pthread_mutex_init(&fnc->ctxqueue_mutex, NULL); | |
d35f447d | 1200 | |
b55ab92a RZ |
1201 | /* Set default values. */ |
1202 | fnc->use_nhg = true; | |
1203 | ||
d35f447d RZ |
1204 | return 0; |
1205 | } | |
1206 | ||
98a87504 | 1207 | static int fpm_nl_finish_early(struct fpm_nl_ctx *fnc) |
d35f447d | 1208 | { |
98a87504 | 1209 | /* Disable all events and close socket. */ |
981ca597 RZ |
1210 | THREAD_OFF(fnc->t_nhgreset); |
1211 | THREAD_OFF(fnc->t_nhgwalk); | |
98a87504 RZ |
1212 | THREAD_OFF(fnc->t_ribreset); |
1213 | THREAD_OFF(fnc->t_ribwalk); | |
1214 | THREAD_OFF(fnc->t_rmacreset); | |
1215 | THREAD_OFF(fnc->t_rmacwalk); | |
1216 | thread_cancel_async(fnc->fthread->master, &fnc->t_read, NULL); | |
1217 | thread_cancel_async(fnc->fthread->master, &fnc->t_write, NULL); | |
1218 | thread_cancel_async(fnc->fthread->master, &fnc->t_connect, NULL); | |
d35f447d | 1219 | |
98a87504 RZ |
1220 | if (fnc->socket != -1) { |
1221 | close(fnc->socket); | |
1222 | fnc->socket = -1; | |
1223 | } | |
1224 | ||
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | static int fpm_nl_finish_late(struct fpm_nl_ctx *fnc) | |
1229 | { | |
1230 | /* Stop the running thread. */ | |
1231 | frr_pthread_stop(fnc->fthread, NULL); | |
1232 | ||
1233 | /* Free all allocated resources. */ | |
1234 | pthread_mutex_destroy(&fnc->obuf_mutex); | |
1235 | pthread_mutex_destroy(&fnc->ctxqueue_mutex); | |
d35f447d RZ |
1236 | stream_free(fnc->ibuf); |
1237 | stream_free(fnc->obuf); | |
98a87504 RZ |
1238 | free(gfnc); |
1239 | gfnc = NULL; | |
d35f447d RZ |
1240 | |
1241 | return 0; | |
1242 | } | |
1243 | ||
98a87504 RZ |
1244 | static int fpm_nl_finish(struct zebra_dplane_provider *prov, bool early) |
1245 | { | |
1246 | struct fpm_nl_ctx *fnc; | |
1247 | ||
1248 | fnc = dplane_provider_get_data(prov); | |
1249 | if (early) | |
1250 | return fpm_nl_finish_early(fnc); | |
1251 | ||
1252 | return fpm_nl_finish_late(fnc); | |
1253 | } | |
1254 | ||
d35f447d RZ |
1255 | static int fpm_nl_process(struct zebra_dplane_provider *prov) |
1256 | { | |
1257 | struct zebra_dplane_ctx *ctx; | |
1258 | struct fpm_nl_ctx *fnc; | |
1259 | int counter, limit; | |
edfeff42 | 1260 | uint64_t cur_queue, peak_queue; |
d35f447d RZ |
1261 | |
1262 | fnc = dplane_provider_get_data(prov); | |
1263 | limit = dplane_provider_get_work_limit(prov); | |
1264 | for (counter = 0; counter < limit; counter++) { | |
1265 | ctx = dplane_provider_dequeue_in_ctx(prov); | |
1266 | if (ctx == NULL) | |
1267 | break; | |
1268 | ||
1269 | /* | |
1270 | * Skip all notifications if not connected, we'll walk the RIB | |
1271 | * anyway. | |
1272 | */ | |
6cc059cd | 1273 | if (fnc->socket != -1 && fnc->connecting == false) { |
ba803a2f RZ |
1274 | frr_mutex_lock_autounlock(&fnc->ctxqueue_mutex); |
1275 | dplane_ctx_enqueue_tail(&fnc->ctxqueue, ctx); | |
1276 | ||
1277 | /* Account the number of contexts. */ | |
c871e6c9 RZ |
1278 | atomic_fetch_add_explicit(&fnc->counters.ctxqueue_len, |
1279 | 1, memory_order_relaxed); | |
1280 | cur_queue = atomic_load_explicit( | |
1281 | &fnc->counters.ctxqueue_len, | |
1282 | memory_order_relaxed); | |
1283 | peak_queue = atomic_load_explicit( | |
1284 | &fnc->counters.ctxqueue_len_peak, | |
1285 | memory_order_relaxed); | |
edfeff42 | 1286 | if (peak_queue < cur_queue) |
c871e6c9 RZ |
1287 | atomic_store_explicit( |
1288 | &fnc->counters.ctxqueue_len_peak, | |
1289 | peak_queue, memory_order_relaxed); | |
ba803a2f | 1290 | continue; |
6cc059cd RZ |
1291 | } |
1292 | ||
d35f447d RZ |
1293 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); |
1294 | dplane_provider_enqueue_out_ctx(prov, ctx); | |
1295 | } | |
1296 | ||
c871e6c9 RZ |
1297 | if (atomic_load_explicit(&fnc->counters.ctxqueue_len, |
1298 | memory_order_relaxed) | |
1299 | > 0) | |
ba803a2f RZ |
1300 | thread_add_timer(fnc->fthread->master, fpm_process_queue, |
1301 | fnc, 0, &fnc->t_dequeue); | |
1302 | ||
d35f447d RZ |
1303 | return 0; |
1304 | } | |
1305 | ||
1306 | static int fpm_nl_new(struct thread_master *tm) | |
1307 | { | |
1308 | struct zebra_dplane_provider *prov = NULL; | |
d35f447d RZ |
1309 | int rv; |
1310 | ||
3bdd7fca | 1311 | gfnc = calloc(1, sizeof(*gfnc)); |
d35f447d RZ |
1312 | rv = dplane_provider_register(prov_name, DPLANE_PRIO_POSTPROCESS, |
1313 | DPLANE_PROV_FLAG_THREADED, fpm_nl_start, | |
3bdd7fca | 1314 | fpm_nl_process, fpm_nl_finish, gfnc, |
d35f447d RZ |
1315 | &prov); |
1316 | ||
1317 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1318 | zlog_debug("%s register status: %d", prov_name, rv); | |
1319 | ||
612c2c15 | 1320 | install_node(&fpm_node); |
6cc059cd RZ |
1321 | install_element(ENABLE_NODE, &fpm_show_counters_cmd); |
1322 | install_element(ENABLE_NODE, &fpm_show_counters_json_cmd); | |
1323 | install_element(ENABLE_NODE, &fpm_reset_counters_cmd); | |
3bdd7fca RZ |
1324 | install_element(CONFIG_NODE, &fpm_set_address_cmd); |
1325 | install_element(CONFIG_NODE, &no_fpm_set_address_cmd); | |
b55ab92a RZ |
1326 | install_element(CONFIG_NODE, &fpm_use_nhg_cmd); |
1327 | install_element(CONFIG_NODE, &no_fpm_use_nhg_cmd); | |
3bdd7fca | 1328 | |
d35f447d RZ |
1329 | return 0; |
1330 | } | |
1331 | ||
1332 | static int fpm_nl_init(void) | |
1333 | { | |
1334 | hook_register(frr_late_init, fpm_nl_new); | |
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | FRR_MODULE_SETUP( | |
1339 | .name = "dplane_fpm_nl", | |
1340 | .version = "0.0.1", | |
1341 | .description = "Data plane plugin for FPM using netlink.", | |
1342 | .init = fpm_nl_init, | |
1343 | ) |