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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" |
b300c8bb | 46 | #include "zebra/zebra_mpls.h" |
018e77bc | 47 | #include "zebra/zebra_router.h" |
b2998086 PR |
48 | #include "zebra/zebra_evpn.h" |
49 | #include "zebra/zebra_evpn_mac.h" | |
bda10adf | 50 | #include "zebra/zebra_vxlan_private.h" |
d35f447d RZ |
51 | #include "zebra/kernel_netlink.h" |
52 | #include "zebra/rt_netlink.h" | |
53 | #include "zebra/debug.h" | |
54 | ||
55 | #define SOUTHBOUND_DEFAULT_ADDR INADDR_LOOPBACK | |
56 | #define SOUTHBOUND_DEFAULT_PORT 2620 | |
57 | ||
a179ba35 RZ |
58 | /** |
59 | * FPM header: | |
60 | * { | |
61 | * version: 1 byte (always 1), | |
62 | * type: 1 byte (1 for netlink, 2 protobuf), | |
63 | * len: 2 bytes (network order), | |
64 | * } | |
65 | * | |
66 | * This header is used with any format to tell the users how many bytes to | |
67 | * expect. | |
68 | */ | |
69 | #define FPM_HEADER_SIZE 4 | |
70 | ||
d35f447d RZ |
71 | static const char *prov_name = "dplane_fpm_nl"; |
72 | ||
73 | struct fpm_nl_ctx { | |
74 | /* data plane connection. */ | |
75 | int socket; | |
3bdd7fca | 76 | bool disabled; |
d35f447d | 77 | bool connecting; |
b55ab92a | 78 | bool use_nhg; |
d35f447d RZ |
79 | struct sockaddr_storage addr; |
80 | ||
81 | /* data plane buffers. */ | |
82 | struct stream *ibuf; | |
83 | struct stream *obuf; | |
84 | pthread_mutex_t obuf_mutex; | |
85 | ||
ba803a2f RZ |
86 | /* |
87 | * data plane context queue: | |
88 | * When a FPM server connection becomes a bottleneck, we must keep the | |
89 | * data plane contexts until we get a chance to process them. | |
90 | */ | |
91 | struct dplane_ctx_q ctxqueue; | |
92 | pthread_mutex_t ctxqueue_mutex; | |
93 | ||
d35f447d | 94 | /* data plane events. */ |
ba803a2f | 95 | struct zebra_dplane_provider *prov; |
d35f447d RZ |
96 | struct frr_pthread *fthread; |
97 | struct thread *t_connect; | |
98 | struct thread *t_read; | |
99 | struct thread *t_write; | |
3bdd7fca | 100 | struct thread *t_event; |
ba803a2f | 101 | struct thread *t_dequeue; |
018e77bc RZ |
102 | |
103 | /* zebra events. */ | |
f9bf1ecc DE |
104 | struct thread *t_lspreset; |
105 | struct thread *t_lspwalk; | |
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 | 157 | |
f9bf1ecc DE |
158 | /* LSP walk finished. */ |
159 | FNE_LSP_FINISHED, | |
55eb9d4d RZ |
160 | /* Next hop groups walk finished. */ |
161 | FNE_NHG_FINISHED, | |
162 | /* RIB walk finished. */ | |
163 | FNE_RIB_FINISHED, | |
164 | /* RMAC walk finished. */ | |
165 | FNE_RMAC_FINISHED, | |
d35f447d RZ |
166 | }; |
167 | ||
a2032324 RZ |
168 | #define FPM_RECONNECT(fnc) \ |
169 | thread_add_event((fnc)->fthread->master, fpm_process_event, (fnc), \ | |
170 | FNE_INTERNAL_RECONNECT, &(fnc)->t_event) | |
171 | ||
55eb9d4d RZ |
172 | #define WALK_FINISH(fnc, ev) \ |
173 | thread_add_event((fnc)->fthread->master, fpm_process_event, (fnc), \ | |
174 | (ev), NULL) | |
175 | ||
018e77bc RZ |
176 | /* |
177 | * Prototypes. | |
178 | */ | |
cc9f21da | 179 | static void fpm_process_event(struct thread *t); |
018e77bc | 180 | static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx); |
cc9f21da DS |
181 | static void fpm_lsp_send(struct thread *t); |
182 | static void fpm_lsp_reset(struct thread *t); | |
183 | static void fpm_nhg_send(struct thread *t); | |
184 | static void fpm_nhg_reset(struct thread *t); | |
185 | static void fpm_rib_send(struct thread *t); | |
186 | static void fpm_rib_reset(struct thread *t); | |
187 | static void fpm_rmac_send(struct thread *t); | |
188 | static void fpm_rmac_reset(struct thread *t); | |
018e77bc | 189 | |
3bdd7fca RZ |
190 | /* |
191 | * CLI. | |
192 | */ | |
6cc059cd RZ |
193 | #define FPM_STR "Forwarding Plane Manager configuration\n" |
194 | ||
3bdd7fca RZ |
195 | DEFUN(fpm_set_address, fpm_set_address_cmd, |
196 | "fpm address <A.B.C.D|X:X::X:X> [port (1-65535)]", | |
6cc059cd | 197 | FPM_STR |
3bdd7fca RZ |
198 | "FPM remote listening server address\n" |
199 | "Remote IPv4 FPM server\n" | |
200 | "Remote IPv6 FPM server\n" | |
201 | "FPM remote listening server port\n" | |
202 | "Remote FPM server port\n") | |
203 | { | |
204 | struct sockaddr_in *sin; | |
205 | struct sockaddr_in6 *sin6; | |
206 | uint16_t port = 0; | |
207 | uint8_t naddr[INET6_BUFSIZ]; | |
208 | ||
209 | if (argc == 5) | |
210 | port = strtol(argv[4]->arg, NULL, 10); | |
211 | ||
212 | /* Handle IPv4 addresses. */ | |
213 | if (inet_pton(AF_INET, argv[2]->arg, naddr) == 1) { | |
214 | sin = (struct sockaddr_in *)&gfnc->addr; | |
215 | ||
216 | memset(sin, 0, sizeof(*sin)); | |
217 | sin->sin_family = AF_INET; | |
218 | sin->sin_port = | |
219 | port ? htons(port) : htons(SOUTHBOUND_DEFAULT_PORT); | |
220 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
221 | sin->sin_len = sizeof(*sin); | |
222 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
223 | memcpy(&sin->sin_addr, naddr, sizeof(sin->sin_addr)); | |
224 | ||
225 | goto ask_reconnect; | |
226 | } | |
227 | ||
228 | /* Handle IPv6 addresses. */ | |
229 | if (inet_pton(AF_INET6, argv[2]->arg, naddr) != 1) { | |
230 | vty_out(vty, "%% Invalid address: %s\n", argv[2]->arg); | |
231 | return CMD_WARNING; | |
232 | } | |
233 | ||
234 | sin6 = (struct sockaddr_in6 *)&gfnc->addr; | |
235 | memset(sin6, 0, sizeof(*sin6)); | |
236 | sin6->sin6_family = AF_INET6; | |
237 | sin6->sin6_port = port ? htons(port) : htons(SOUTHBOUND_DEFAULT_PORT); | |
238 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
239 | sin6->sin6_len = sizeof(*sin6); | |
240 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
241 | memcpy(&sin6->sin6_addr, naddr, sizeof(sin6->sin6_addr)); | |
242 | ||
243 | ask_reconnect: | |
244 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
245 | FNE_RECONNECT, &gfnc->t_event); | |
246 | return CMD_SUCCESS; | |
247 | } | |
248 | ||
249 | DEFUN(no_fpm_set_address, no_fpm_set_address_cmd, | |
250 | "no fpm address [<A.B.C.D|X:X::X:X> [port <1-65535>]]", | |
251 | NO_STR | |
6cc059cd | 252 | FPM_STR |
3bdd7fca RZ |
253 | "FPM remote listening server address\n" |
254 | "Remote IPv4 FPM server\n" | |
255 | "Remote IPv6 FPM server\n" | |
256 | "FPM remote listening server port\n" | |
257 | "Remote FPM server port\n") | |
258 | { | |
259 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
260 | FNE_DISABLE, &gfnc->t_event); | |
261 | return CMD_SUCCESS; | |
262 | } | |
263 | ||
b55ab92a RZ |
264 | DEFUN(fpm_use_nhg, fpm_use_nhg_cmd, |
265 | "fpm use-next-hop-groups", | |
266 | FPM_STR | |
267 | "Use netlink next hop groups feature.\n") | |
268 | { | |
269 | /* Already enabled. */ | |
270 | if (gfnc->use_nhg) | |
271 | return CMD_SUCCESS; | |
272 | ||
273 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
274 | FNE_TOGGLE_NHG, &gfnc->t_event); | |
275 | ||
276 | return CMD_SUCCESS; | |
277 | } | |
278 | ||
279 | DEFUN(no_fpm_use_nhg, no_fpm_use_nhg_cmd, | |
280 | "no fpm use-next-hop-groups", | |
281 | NO_STR | |
282 | FPM_STR | |
283 | "Use netlink next hop groups feature.\n") | |
284 | { | |
285 | /* Already disabled. */ | |
286 | if (!gfnc->use_nhg) | |
287 | return CMD_SUCCESS; | |
288 | ||
289 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
290 | FNE_TOGGLE_NHG, &gfnc->t_event); | |
291 | ||
292 | return CMD_SUCCESS; | |
293 | } | |
294 | ||
6cc059cd RZ |
295 | DEFUN(fpm_reset_counters, fpm_reset_counters_cmd, |
296 | "clear fpm counters", | |
297 | CLEAR_STR | |
298 | FPM_STR | |
299 | "FPM statistic counters\n") | |
300 | { | |
301 | thread_add_event(gfnc->fthread->master, fpm_process_event, gfnc, | |
302 | FNE_RESET_COUNTERS, &gfnc->t_event); | |
303 | return CMD_SUCCESS; | |
304 | } | |
305 | ||
306 | DEFUN(fpm_show_counters, fpm_show_counters_cmd, | |
307 | "show fpm counters", | |
308 | SHOW_STR | |
309 | FPM_STR | |
310 | "FPM statistic counters\n") | |
311 | { | |
312 | vty_out(vty, "%30s\n%30s\n", "FPM counters", "============"); | |
313 | ||
314 | #define SHOW_COUNTER(label, counter) \ | |
770a8d28 | 315 | vty_out(vty, "%28s: %u\n", (label), (counter)) |
6cc059cd RZ |
316 | |
317 | SHOW_COUNTER("Input bytes", gfnc->counters.bytes_read); | |
318 | SHOW_COUNTER("Output bytes", gfnc->counters.bytes_sent); | |
ad4d1022 RZ |
319 | SHOW_COUNTER("Output buffer current size", gfnc->counters.obuf_bytes); |
320 | SHOW_COUNTER("Output buffer peak size", gfnc->counters.obuf_peak); | |
6cc059cd RZ |
321 | SHOW_COUNTER("Connection closes", gfnc->counters.connection_closes); |
322 | SHOW_COUNTER("Connection errors", gfnc->counters.connection_errors); | |
323 | SHOW_COUNTER("Data plane items processed", | |
324 | gfnc->counters.dplane_contexts); | |
ba803a2f RZ |
325 | SHOW_COUNTER("Data plane items enqueued", |
326 | gfnc->counters.ctxqueue_len); | |
327 | SHOW_COUNTER("Data plane items queue peak", | |
328 | gfnc->counters.ctxqueue_len_peak); | |
6cc059cd RZ |
329 | SHOW_COUNTER("Buffer full hits", gfnc->counters.buffer_full); |
330 | SHOW_COUNTER("User FPM configurations", gfnc->counters.user_configures); | |
331 | SHOW_COUNTER("User FPM disable requests", gfnc->counters.user_disables); | |
332 | ||
333 | #undef SHOW_COUNTER | |
334 | ||
335 | return CMD_SUCCESS; | |
336 | } | |
337 | ||
338 | DEFUN(fpm_show_counters_json, fpm_show_counters_json_cmd, | |
339 | "show fpm counters json", | |
340 | SHOW_STR | |
341 | FPM_STR | |
342 | "FPM statistic counters\n" | |
343 | JSON_STR) | |
344 | { | |
345 | struct json_object *jo; | |
346 | ||
347 | jo = json_object_new_object(); | |
348 | json_object_int_add(jo, "bytes-read", gfnc->counters.bytes_read); | |
349 | json_object_int_add(jo, "bytes-sent", gfnc->counters.bytes_sent); | |
ad4d1022 RZ |
350 | json_object_int_add(jo, "obuf-bytes", gfnc->counters.obuf_bytes); |
351 | json_object_int_add(jo, "obuf-bytes-peak", gfnc->counters.obuf_peak); | |
a50404aa RZ |
352 | json_object_int_add(jo, "connection-closes", |
353 | gfnc->counters.connection_closes); | |
354 | json_object_int_add(jo, "connection-errors", | |
355 | gfnc->counters.connection_errors); | |
356 | json_object_int_add(jo, "data-plane-contexts", | |
357 | gfnc->counters.dplane_contexts); | |
ba803a2f RZ |
358 | json_object_int_add(jo, "data-plane-contexts-queue", |
359 | gfnc->counters.ctxqueue_len); | |
360 | json_object_int_add(jo, "data-plane-contexts-queue-peak", | |
361 | gfnc->counters.ctxqueue_len_peak); | |
6cc059cd | 362 | json_object_int_add(jo, "buffer-full-hits", gfnc->counters.buffer_full); |
a50404aa RZ |
363 | json_object_int_add(jo, "user-configures", |
364 | gfnc->counters.user_configures); | |
6cc059cd | 365 | json_object_int_add(jo, "user-disables", gfnc->counters.user_disables); |
962af8a8 | 366 | vty_json(vty, jo); |
6cc059cd RZ |
367 | |
368 | return CMD_SUCCESS; | |
369 | } | |
370 | ||
3bdd7fca RZ |
371 | static int fpm_write_config(struct vty *vty) |
372 | { | |
373 | struct sockaddr_in *sin; | |
374 | struct sockaddr_in6 *sin6; | |
375 | int written = 0; | |
3bdd7fca RZ |
376 | |
377 | if (gfnc->disabled) | |
378 | return written; | |
379 | ||
380 | switch (gfnc->addr.ss_family) { | |
381 | case AF_INET: | |
382 | written = 1; | |
383 | sin = (struct sockaddr_in *)&gfnc->addr; | |
a3adec46 | 384 | vty_out(vty, "fpm address %pI4", &sin->sin_addr); |
3bdd7fca RZ |
385 | if (sin->sin_port != htons(SOUTHBOUND_DEFAULT_PORT)) |
386 | vty_out(vty, " port %d", ntohs(sin->sin_port)); | |
387 | ||
388 | vty_out(vty, "\n"); | |
389 | break; | |
390 | case AF_INET6: | |
391 | written = 1; | |
392 | sin6 = (struct sockaddr_in6 *)&gfnc->addr; | |
a3adec46 | 393 | vty_out(vty, "fpm address %pI6", &sin6->sin6_addr); |
3bdd7fca RZ |
394 | if (sin6->sin6_port != htons(SOUTHBOUND_DEFAULT_PORT)) |
395 | vty_out(vty, " port %d", ntohs(sin6->sin6_port)); | |
396 | ||
397 | vty_out(vty, "\n"); | |
398 | break; | |
399 | ||
400 | default: | |
401 | break; | |
402 | } | |
403 | ||
b55ab92a RZ |
404 | if (!gfnc->use_nhg) { |
405 | vty_out(vty, "no fpm use-next-hop-groups\n"); | |
406 | written = 1; | |
407 | } | |
408 | ||
3bdd7fca RZ |
409 | return written; |
410 | } | |
411 | ||
612c2c15 | 412 | static struct cmd_node fpm_node = { |
893d8beb DL |
413 | .name = "fpm", |
414 | .node = FPM_NODE, | |
3bdd7fca | 415 | .prompt = "", |
612c2c15 | 416 | .config_write = fpm_write_config, |
3bdd7fca RZ |
417 | }; |
418 | ||
d35f447d RZ |
419 | /* |
420 | * FPM functions. | |
421 | */ | |
cc9f21da | 422 | static void fpm_connect(struct thread *t); |
d35f447d RZ |
423 | |
424 | static void fpm_reconnect(struct fpm_nl_ctx *fnc) | |
425 | { | |
a2032324 | 426 | /* Cancel all zebra threads first. */ |
f9bf1ecc DE |
427 | thread_cancel_async(zrouter.master, &fnc->t_lspreset, NULL); |
428 | thread_cancel_async(zrouter.master, &fnc->t_lspwalk, NULL); | |
a2032324 RZ |
429 | thread_cancel_async(zrouter.master, &fnc->t_nhgreset, NULL); |
430 | thread_cancel_async(zrouter.master, &fnc->t_nhgwalk, NULL); | |
431 | thread_cancel_async(zrouter.master, &fnc->t_ribreset, NULL); | |
432 | thread_cancel_async(zrouter.master, &fnc->t_ribwalk, NULL); | |
433 | thread_cancel_async(zrouter.master, &fnc->t_rmacreset, NULL); | |
434 | thread_cancel_async(zrouter.master, &fnc->t_rmacwalk, NULL); | |
435 | ||
436 | /* | |
437 | * Grab the lock to empty the streams (data plane might try to | |
438 | * enqueue updates while we are closing). | |
439 | */ | |
d35f447d RZ |
440 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); |
441 | ||
3bdd7fca RZ |
442 | /* Avoid calling close on `-1`. */ |
443 | if (fnc->socket != -1) { | |
444 | close(fnc->socket); | |
445 | fnc->socket = -1; | |
446 | } | |
447 | ||
d35f447d RZ |
448 | stream_reset(fnc->ibuf); |
449 | stream_reset(fnc->obuf); | |
450 | THREAD_OFF(fnc->t_read); | |
451 | THREAD_OFF(fnc->t_write); | |
018e77bc | 452 | |
3bdd7fca RZ |
453 | /* FPM is disabled, don't attempt to connect. */ |
454 | if (fnc->disabled) | |
455 | return; | |
456 | ||
d35f447d RZ |
457 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, |
458 | &fnc->t_connect); | |
459 | } | |
460 | ||
cc9f21da | 461 | static void fpm_read(struct thread *t) |
d35f447d RZ |
462 | { |
463 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
464 | ssize_t rv; | |
465 | ||
466 | /* Let's ignore the input at the moment. */ | |
467 | rv = stream_read_try(fnc->ibuf, fnc->socket, | |
468 | STREAM_WRITEABLE(fnc->ibuf)); | |
e1afb97f RZ |
469 | /* We've got an interruption. */ |
470 | if (rv == -2) { | |
471 | /* Schedule next read. */ | |
472 | thread_add_read(fnc->fthread->master, fpm_read, fnc, | |
473 | fnc->socket, &fnc->t_read); | |
cc9f21da | 474 | return; |
e1afb97f | 475 | } |
d35f447d | 476 | if (rv == 0) { |
c871e6c9 RZ |
477 | atomic_fetch_add_explicit(&fnc->counters.connection_closes, 1, |
478 | memory_order_relaxed); | |
e5e444d8 RZ |
479 | |
480 | if (IS_ZEBRA_DEBUG_FPM) | |
481 | zlog_debug("%s: connection closed", __func__); | |
482 | ||
a2032324 | 483 | FPM_RECONNECT(fnc); |
cc9f21da | 484 | return; |
d35f447d RZ |
485 | } |
486 | if (rv == -1) { | |
c871e6c9 RZ |
487 | atomic_fetch_add_explicit(&fnc->counters.connection_errors, 1, |
488 | memory_order_relaxed); | |
e5e444d8 RZ |
489 | zlog_warn("%s: connection failure: %s", __func__, |
490 | strerror(errno)); | |
a2032324 | 491 | FPM_RECONNECT(fnc); |
cc9f21da | 492 | return; |
d35f447d RZ |
493 | } |
494 | stream_reset(fnc->ibuf); | |
495 | ||
6cc059cd | 496 | /* Account all bytes read. */ |
c871e6c9 RZ |
497 | atomic_fetch_add_explicit(&fnc->counters.bytes_read, rv, |
498 | memory_order_relaxed); | |
6cc059cd | 499 | |
d35f447d RZ |
500 | thread_add_read(fnc->fthread->master, fpm_read, fnc, fnc->socket, |
501 | &fnc->t_read); | |
d35f447d RZ |
502 | } |
503 | ||
cc9f21da | 504 | static void fpm_write(struct thread *t) |
d35f447d RZ |
505 | { |
506 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
507 | socklen_t statuslen; | |
508 | ssize_t bwritten; | |
509 | int rv, status; | |
510 | size_t btotal; | |
511 | ||
512 | if (fnc->connecting == true) { | |
513 | status = 0; | |
514 | statuslen = sizeof(status); | |
515 | ||
516 | rv = getsockopt(fnc->socket, SOL_SOCKET, SO_ERROR, &status, | |
517 | &statuslen); | |
518 | if (rv == -1 || status != 0) { | |
519 | if (rv != -1) | |
e5e444d8 RZ |
520 | zlog_warn("%s: connection failed: %s", __func__, |
521 | strerror(status)); | |
d35f447d | 522 | else |
e5e444d8 RZ |
523 | zlog_warn("%s: SO_ERROR failed: %s", __func__, |
524 | strerror(status)); | |
d35f447d | 525 | |
c871e6c9 RZ |
526 | atomic_fetch_add_explicit( |
527 | &fnc->counters.connection_errors, 1, | |
528 | memory_order_relaxed); | |
6cc059cd | 529 | |
a2032324 | 530 | FPM_RECONNECT(fnc); |
cc9f21da | 531 | return; |
d35f447d RZ |
532 | } |
533 | ||
534 | fnc->connecting = false; | |
018e77bc | 535 | |
f584de52 RZ |
536 | /* |
537 | * Starting with LSPs walk all FPM objects, marking them | |
538 | * as unsent and then replaying them. | |
539 | */ | |
540 | thread_add_timer(zrouter.master, fpm_lsp_reset, fnc, 0, | |
541 | &fnc->t_lspreset); | |
542 | ||
e1afb97f RZ |
543 | /* Permit receiving messages now. */ |
544 | thread_add_read(fnc->fthread->master, fpm_read, fnc, | |
545 | fnc->socket, &fnc->t_read); | |
d35f447d RZ |
546 | } |
547 | ||
548 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
549 | ||
550 | while (true) { | |
551 | /* Stream is empty: reset pointers and return. */ | |
552 | if (STREAM_READABLE(fnc->obuf) == 0) { | |
553 | stream_reset(fnc->obuf); | |
554 | break; | |
555 | } | |
556 | ||
557 | /* Try to write all at once. */ | |
558 | btotal = stream_get_endp(fnc->obuf) - | |
559 | stream_get_getp(fnc->obuf); | |
560 | bwritten = write(fnc->socket, stream_pnt(fnc->obuf), btotal); | |
561 | if (bwritten == 0) { | |
c871e6c9 RZ |
562 | atomic_fetch_add_explicit( |
563 | &fnc->counters.connection_closes, 1, | |
564 | memory_order_relaxed); | |
e5e444d8 RZ |
565 | |
566 | if (IS_ZEBRA_DEBUG_FPM) | |
567 | zlog_debug("%s: connection closed", __func__); | |
d35f447d RZ |
568 | break; |
569 | } | |
570 | if (bwritten == -1) { | |
ad4d1022 RZ |
571 | /* Attempt to continue if blocked by a signal. */ |
572 | if (errno == EINTR) | |
573 | continue; | |
574 | /* Receiver is probably slow, lets give it some time. */ | |
575 | if (errno == EAGAIN || errno == EWOULDBLOCK) | |
d35f447d RZ |
576 | break; |
577 | ||
c871e6c9 RZ |
578 | atomic_fetch_add_explicit( |
579 | &fnc->counters.connection_errors, 1, | |
580 | memory_order_relaxed); | |
e5e444d8 RZ |
581 | zlog_warn("%s: connection failure: %s", __func__, |
582 | strerror(errno)); | |
a2032324 RZ |
583 | |
584 | FPM_RECONNECT(fnc); | |
cc9f21da | 585 | return; |
d35f447d RZ |
586 | } |
587 | ||
6cc059cd | 588 | /* Account all bytes sent. */ |
c871e6c9 RZ |
589 | atomic_fetch_add_explicit(&fnc->counters.bytes_sent, bwritten, |
590 | memory_order_relaxed); | |
6cc059cd | 591 | |
ad4d1022 | 592 | /* Account number of bytes free. */ |
c871e6c9 RZ |
593 | atomic_fetch_sub_explicit(&fnc->counters.obuf_bytes, bwritten, |
594 | memory_order_relaxed); | |
ad4d1022 | 595 | |
d35f447d RZ |
596 | stream_forward_getp(fnc->obuf, (size_t)bwritten); |
597 | } | |
598 | ||
599 | /* Stream is not empty yet, we must schedule more writes. */ | |
600 | if (STREAM_READABLE(fnc->obuf)) { | |
ad4d1022 | 601 | stream_pulldown(fnc->obuf); |
d35f447d RZ |
602 | thread_add_write(fnc->fthread->master, fpm_write, fnc, |
603 | fnc->socket, &fnc->t_write); | |
cc9f21da | 604 | return; |
d35f447d | 605 | } |
d35f447d RZ |
606 | } |
607 | ||
cc9f21da | 608 | static void fpm_connect(struct thread *t) |
d35f447d RZ |
609 | { |
610 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
3bdd7fca RZ |
611 | struct sockaddr_in *sin = (struct sockaddr_in *)&fnc->addr; |
612 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&fnc->addr; | |
613 | socklen_t slen; | |
d35f447d RZ |
614 | int rv, sock; |
615 | char addrstr[INET6_ADDRSTRLEN]; | |
616 | ||
3bdd7fca | 617 | sock = socket(fnc->addr.ss_family, SOCK_STREAM, 0); |
d35f447d | 618 | if (sock == -1) { |
6cc059cd | 619 | zlog_err("%s: fpm socket failed: %s", __func__, |
d35f447d RZ |
620 | strerror(errno)); |
621 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, | |
622 | &fnc->t_connect); | |
cc9f21da | 623 | return; |
d35f447d RZ |
624 | } |
625 | ||
626 | set_nonblocking(sock); | |
627 | ||
3bdd7fca RZ |
628 | if (fnc->addr.ss_family == AF_INET) { |
629 | inet_ntop(AF_INET, &sin->sin_addr, addrstr, sizeof(addrstr)); | |
630 | slen = sizeof(*sin); | |
631 | } else { | |
632 | inet_ntop(AF_INET6, &sin6->sin6_addr, addrstr, sizeof(addrstr)); | |
633 | slen = sizeof(*sin6); | |
634 | } | |
d35f447d | 635 | |
e5e444d8 RZ |
636 | if (IS_ZEBRA_DEBUG_FPM) |
637 | zlog_debug("%s: attempting to connect to %s:%d", __func__, | |
638 | addrstr, ntohs(sin->sin_port)); | |
d35f447d | 639 | |
3bdd7fca | 640 | rv = connect(sock, (struct sockaddr *)&fnc->addr, slen); |
d35f447d | 641 | if (rv == -1 && errno != EINPROGRESS) { |
c871e6c9 RZ |
642 | atomic_fetch_add_explicit(&fnc->counters.connection_errors, 1, |
643 | memory_order_relaxed); | |
d35f447d RZ |
644 | close(sock); |
645 | zlog_warn("%s: fpm connection failed: %s", __func__, | |
646 | strerror(errno)); | |
647 | thread_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, | |
648 | &fnc->t_connect); | |
cc9f21da | 649 | return; |
d35f447d RZ |
650 | } |
651 | ||
652 | fnc->connecting = (errno == EINPROGRESS); | |
653 | fnc->socket = sock; | |
e1afb97f RZ |
654 | if (!fnc->connecting) |
655 | thread_add_read(fnc->fthread->master, fpm_read, fnc, sock, | |
656 | &fnc->t_read); | |
d35f447d RZ |
657 | thread_add_write(fnc->fthread->master, fpm_write, fnc, sock, |
658 | &fnc->t_write); | |
659 | ||
f9bf1ecc DE |
660 | /* |
661 | * Starting with LSPs walk all FPM objects, marking them | |
662 | * as unsent and then replaying them. | |
f584de52 RZ |
663 | * |
664 | * If we are not connected, then delay the objects reset/send. | |
f9bf1ecc | 665 | */ |
f584de52 RZ |
666 | if (!fnc->connecting) |
667 | thread_add_timer(zrouter.master, fpm_lsp_reset, fnc, 0, | |
668 | &fnc->t_lspreset); | |
d35f447d RZ |
669 | } |
670 | ||
671 | /** | |
672 | * Encode data plane operation context into netlink and enqueue it in the FPM | |
673 | * output buffer. | |
674 | * | |
675 | * @param fnc the netlink FPM context. | |
676 | * @param ctx the data plane operation context data. | |
677 | * @return 0 on success or -1 on not enough space. | |
678 | */ | |
679 | static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx) | |
680 | { | |
681 | uint8_t nl_buf[NL_PKT_BUF_SIZE]; | |
682 | size_t nl_buf_len; | |
683 | ssize_t rv; | |
edfeff42 | 684 | uint64_t obytes, obytes_peak; |
b55ab92a RZ |
685 | enum dplane_op_e op = dplane_ctx_get_op(ctx); |
686 | ||
687 | /* | |
688 | * If we were configured to not use next hop groups, then quit as soon | |
689 | * as possible. | |
690 | */ | |
691 | if ((!fnc->use_nhg) | |
692 | && (op == DPLANE_OP_NH_DELETE || op == DPLANE_OP_NH_INSTALL | |
693 | || op == DPLANE_OP_NH_UPDATE)) | |
694 | return 0; | |
d35f447d RZ |
695 | |
696 | nl_buf_len = 0; | |
697 | ||
698 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
699 | ||
b55ab92a | 700 | switch (op) { |
d35f447d RZ |
701 | case DPLANE_OP_ROUTE_UPDATE: |
702 | case DPLANE_OP_ROUTE_DELETE: | |
0be6e7d7 JU |
703 | rv = netlink_route_multipath_msg_encode(RTM_DELROUTE, ctx, |
704 | nl_buf, sizeof(nl_buf), | |
705 | true, fnc->use_nhg); | |
d35f447d | 706 | if (rv <= 0) { |
0be6e7d7 JU |
707 | zlog_err( |
708 | "%s: netlink_route_multipath_msg_encode failed", | |
709 | __func__); | |
d35f447d RZ |
710 | return 0; |
711 | } | |
712 | ||
713 | nl_buf_len = (size_t)rv; | |
d35f447d RZ |
714 | |
715 | /* UPDATE operations need a INSTALL, otherwise just quit. */ | |
b55ab92a | 716 | if (op == DPLANE_OP_ROUTE_DELETE) |
d35f447d RZ |
717 | break; |
718 | ||
719 | /* FALL THROUGH */ | |
720 | case DPLANE_OP_ROUTE_INSTALL: | |
0be6e7d7 | 721 | rv = netlink_route_multipath_msg_encode( |
b55ab92a RZ |
722 | RTM_NEWROUTE, ctx, &nl_buf[nl_buf_len], |
723 | sizeof(nl_buf) - nl_buf_len, true, fnc->use_nhg); | |
d35f447d | 724 | if (rv <= 0) { |
0be6e7d7 JU |
725 | zlog_err( |
726 | "%s: netlink_route_multipath_msg_encode failed", | |
727 | __func__); | |
d35f447d RZ |
728 | return 0; |
729 | } | |
730 | ||
731 | nl_buf_len += (size_t)rv; | |
d35f447d RZ |
732 | break; |
733 | ||
bda10adf RZ |
734 | case DPLANE_OP_MAC_INSTALL: |
735 | case DPLANE_OP_MAC_DELETE: | |
736 | rv = netlink_macfdb_update_ctx(ctx, nl_buf, sizeof(nl_buf)); | |
737 | if (rv <= 0) { | |
e5e444d8 RZ |
738 | zlog_err("%s: netlink_macfdb_update_ctx failed", |
739 | __func__); | |
bda10adf RZ |
740 | return 0; |
741 | } | |
742 | ||
743 | nl_buf_len = (size_t)rv; | |
bda10adf RZ |
744 | break; |
745 | ||
e9a1cd93 | 746 | case DPLANE_OP_NH_DELETE: |
0be6e7d7 JU |
747 | rv = netlink_nexthop_msg_encode(RTM_DELNEXTHOP, ctx, nl_buf, |
748 | sizeof(nl_buf)); | |
e9a1cd93 | 749 | if (rv <= 0) { |
0be6e7d7 JU |
750 | zlog_err("%s: netlink_nexthop_msg_encode failed", |
751 | __func__); | |
e9a1cd93 RZ |
752 | return 0; |
753 | } | |
754 | ||
755 | nl_buf_len = (size_t)rv; | |
756 | break; | |
d35f447d RZ |
757 | case DPLANE_OP_NH_INSTALL: |
758 | case DPLANE_OP_NH_UPDATE: | |
0be6e7d7 JU |
759 | rv = netlink_nexthop_msg_encode(RTM_NEWNEXTHOP, ctx, nl_buf, |
760 | sizeof(nl_buf)); | |
e9a1cd93 | 761 | if (rv <= 0) { |
0be6e7d7 JU |
762 | zlog_err("%s: netlink_nexthop_msg_encode failed", |
763 | __func__); | |
e9a1cd93 RZ |
764 | return 0; |
765 | } | |
766 | ||
767 | nl_buf_len = (size_t)rv; | |
768 | break; | |
769 | ||
d35f447d RZ |
770 | case DPLANE_OP_LSP_INSTALL: |
771 | case DPLANE_OP_LSP_UPDATE: | |
772 | case DPLANE_OP_LSP_DELETE: | |
b300c8bb DE |
773 | rv = netlink_lsp_msg_encoder(ctx, nl_buf, sizeof(nl_buf)); |
774 | if (rv <= 0) { | |
f9bf1ecc DE |
775 | zlog_err("%s: netlink_lsp_msg_encoder failed", |
776 | __func__); | |
b300c8bb DE |
777 | return 0; |
778 | } | |
779 | ||
780 | nl_buf_len += (size_t)rv; | |
781 | break; | |
782 | ||
d4bcd88d | 783 | /* Un-handled by FPM at this time. */ |
d35f447d RZ |
784 | case DPLANE_OP_PW_INSTALL: |
785 | case DPLANE_OP_PW_UNINSTALL: | |
786 | case DPLANE_OP_ADDR_INSTALL: | |
787 | case DPLANE_OP_ADDR_UNINSTALL: | |
d35f447d RZ |
788 | case DPLANE_OP_NEIGH_INSTALL: |
789 | case DPLANE_OP_NEIGH_UPDATE: | |
790 | case DPLANE_OP_NEIGH_DELETE: | |
791 | case DPLANE_OP_VTEP_ADD: | |
792 | case DPLANE_OP_VTEP_DELETE: | |
793 | case DPLANE_OP_SYS_ROUTE_ADD: | |
794 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
795 | case DPLANE_OP_ROUTE_NOTIFY: | |
796 | case DPLANE_OP_LSP_NOTIFY: | |
d4bcd88d MS |
797 | case DPLANE_OP_RULE_ADD: |
798 | case DPLANE_OP_RULE_DELETE: | |
799 | case DPLANE_OP_RULE_UPDATE: | |
800 | case DPLANE_OP_NEIGH_DISCOVER: | |
801 | case DPLANE_OP_BR_PORT_UPDATE: | |
802 | case DPLANE_OP_IPTABLE_ADD: | |
803 | case DPLANE_OP_IPTABLE_DELETE: | |
804 | case DPLANE_OP_IPSET_ADD: | |
805 | case DPLANE_OP_IPSET_DELETE: | |
806 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
807 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
808 | case DPLANE_OP_NEIGH_IP_INSTALL: | |
809 | case DPLANE_OP_NEIGH_IP_DELETE: | |
810 | case DPLANE_OP_NEIGH_TABLE_UPDATE: | |
811 | case DPLANE_OP_GRE_SET: | |
812 | case DPLANE_OP_INTF_ADDR_ADD: | |
813 | case DPLANE_OP_INTF_ADDR_DEL: | |
d35f447d RZ |
814 | case DPLANE_OP_NONE: |
815 | break; | |
816 | ||
d35f447d RZ |
817 | } |
818 | ||
819 | /* Skip empty enqueues. */ | |
820 | if (nl_buf_len == 0) | |
821 | return 0; | |
822 | ||
a179ba35 RZ |
823 | /* We must know if someday a message goes beyond 65KiB. */ |
824 | assert((nl_buf_len + FPM_HEADER_SIZE) <= UINT16_MAX); | |
825 | ||
826 | /* Check if we have enough buffer space. */ | |
827 | if (STREAM_WRITEABLE(fnc->obuf) < (nl_buf_len + FPM_HEADER_SIZE)) { | |
c871e6c9 RZ |
828 | atomic_fetch_add_explicit(&fnc->counters.buffer_full, 1, |
829 | memory_order_relaxed); | |
e5e444d8 RZ |
830 | |
831 | if (IS_ZEBRA_DEBUG_FPM) | |
832 | zlog_debug( | |
833 | "%s: buffer full: wants to write %zu but has %zu", | |
834 | __func__, nl_buf_len + FPM_HEADER_SIZE, | |
835 | STREAM_WRITEABLE(fnc->obuf)); | |
836 | ||
a179ba35 RZ |
837 | return -1; |
838 | } | |
839 | ||
d35f447d | 840 | /* |
a179ba35 RZ |
841 | * Fill in the FPM header information. |
842 | * | |
843 | * See FPM_HEADER_SIZE definition for more information. | |
d35f447d RZ |
844 | */ |
845 | stream_putc(fnc->obuf, 1); | |
846 | stream_putc(fnc->obuf, 1); | |
a179ba35 | 847 | stream_putw(fnc->obuf, nl_buf_len + FPM_HEADER_SIZE); |
d35f447d RZ |
848 | |
849 | /* Write current data. */ | |
850 | stream_write(fnc->obuf, nl_buf, (size_t)nl_buf_len); | |
851 | ||
ad4d1022 | 852 | /* Account number of bytes waiting to be written. */ |
c871e6c9 RZ |
853 | atomic_fetch_add_explicit(&fnc->counters.obuf_bytes, |
854 | nl_buf_len + FPM_HEADER_SIZE, | |
855 | memory_order_relaxed); | |
edfeff42 RZ |
856 | obytes = atomic_load_explicit(&fnc->counters.obuf_bytes, |
857 | memory_order_relaxed); | |
858 | obytes_peak = atomic_load_explicit(&fnc->counters.obuf_peak, | |
859 | memory_order_relaxed); | |
860 | if (obytes_peak < obytes) | |
c871e6c9 RZ |
861 | atomic_store_explicit(&fnc->counters.obuf_peak, obytes, |
862 | memory_order_relaxed); | |
ad4d1022 | 863 | |
d35f447d RZ |
864 | /* Tell the thread to start writing. */ |
865 | thread_add_write(fnc->fthread->master, fpm_write, fnc, fnc->socket, | |
866 | &fnc->t_write); | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
f9bf1ecc DE |
871 | /* |
872 | * LSP walk/send functions | |
873 | */ | |
874 | struct fpm_lsp_arg { | |
875 | struct zebra_dplane_ctx *ctx; | |
876 | struct fpm_nl_ctx *fnc; | |
877 | bool complete; | |
878 | }; | |
879 | ||
880 | static int fpm_lsp_send_cb(struct hash_bucket *bucket, void *arg) | |
881 | { | |
8f74a383 | 882 | struct zebra_lsp *lsp = bucket->data; |
f9bf1ecc DE |
883 | struct fpm_lsp_arg *fla = arg; |
884 | ||
885 | /* Skip entries which have already been sent */ | |
886 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_FPM)) | |
887 | return HASHWALK_CONTINUE; | |
888 | ||
889 | dplane_ctx_reset(fla->ctx); | |
890 | dplane_ctx_lsp_init(fla->ctx, DPLANE_OP_LSP_INSTALL, lsp); | |
891 | ||
892 | if (fpm_nl_enqueue(fla->fnc, fla->ctx) == -1) { | |
893 | fla->complete = false; | |
894 | return HASHWALK_ABORT; | |
895 | } | |
896 | ||
897 | /* Mark entry as sent */ | |
898 | SET_FLAG(lsp->flags, LSP_FLAG_FPM); | |
899 | return HASHWALK_CONTINUE; | |
900 | } | |
901 | ||
cc9f21da | 902 | static void fpm_lsp_send(struct thread *t) |
f9bf1ecc DE |
903 | { |
904 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
905 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
906 | struct fpm_lsp_arg fla; | |
907 | ||
908 | fla.fnc = fnc; | |
909 | fla.ctx = dplane_ctx_alloc(); | |
910 | fla.complete = true; | |
911 | ||
912 | hash_walk(zvrf->lsp_table, fpm_lsp_send_cb, &fla); | |
913 | ||
914 | dplane_ctx_fini(&fla.ctx); | |
915 | ||
916 | if (fla.complete) { | |
917 | WALK_FINISH(fnc, FNE_LSP_FINISHED); | |
918 | ||
919 | /* Now move onto routes */ | |
1f9193c1 RZ |
920 | thread_add_timer(zrouter.master, fpm_nhg_reset, fnc, 0, |
921 | &fnc->t_nhgreset); | |
f9bf1ecc DE |
922 | } else { |
923 | /* Didn't finish - reschedule LSP walk */ | |
924 | thread_add_timer(zrouter.master, fpm_lsp_send, fnc, 0, | |
925 | &fnc->t_lspwalk); | |
926 | } | |
f9bf1ecc DE |
927 | } |
928 | ||
981ca597 RZ |
929 | /* |
930 | * Next hop walk/send functions. | |
931 | */ | |
932 | struct fpm_nhg_arg { | |
933 | struct zebra_dplane_ctx *ctx; | |
934 | struct fpm_nl_ctx *fnc; | |
935 | bool complete; | |
936 | }; | |
937 | ||
938 | static int fpm_nhg_send_cb(struct hash_bucket *bucket, void *arg) | |
939 | { | |
940 | struct nhg_hash_entry *nhe = bucket->data; | |
941 | struct fpm_nhg_arg *fna = arg; | |
942 | ||
943 | /* This entry was already sent, skip it. */ | |
944 | if (CHECK_FLAG(nhe->flags, NEXTHOP_GROUP_FPM)) | |
945 | return HASHWALK_CONTINUE; | |
946 | ||
947 | /* Reset ctx to reuse allocated memory, take a snapshot and send it. */ | |
948 | dplane_ctx_reset(fna->ctx); | |
949 | dplane_ctx_nexthop_init(fna->ctx, DPLANE_OP_NH_INSTALL, nhe); | |
950 | if (fpm_nl_enqueue(fna->fnc, fna->ctx) == -1) { | |
951 | /* Our buffers are full, lets give it some cycles. */ | |
952 | fna->complete = false; | |
953 | return HASHWALK_ABORT; | |
954 | } | |
955 | ||
956 | /* Mark group as sent, so it doesn't get sent again. */ | |
957 | SET_FLAG(nhe->flags, NEXTHOP_GROUP_FPM); | |
958 | ||
959 | return HASHWALK_CONTINUE; | |
960 | } | |
961 | ||
cc9f21da | 962 | static void fpm_nhg_send(struct thread *t) |
981ca597 RZ |
963 | { |
964 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
965 | struct fpm_nhg_arg fna; | |
966 | ||
967 | fna.fnc = fnc; | |
968 | fna.ctx = dplane_ctx_alloc(); | |
969 | fna.complete = true; | |
970 | ||
971 | /* Send next hops. */ | |
1f9193c1 RZ |
972 | if (fnc->use_nhg) |
973 | hash_walk(zrouter.nhgs_id, fpm_nhg_send_cb, &fna); | |
981ca597 RZ |
974 | |
975 | /* `free()` allocated memory. */ | |
976 | dplane_ctx_fini(&fna.ctx); | |
977 | ||
978 | /* We are done sending next hops, lets install the routes now. */ | |
55eb9d4d RZ |
979 | if (fna.complete) { |
980 | WALK_FINISH(fnc, FNE_NHG_FINISHED); | |
e41e0f81 RZ |
981 | thread_add_timer(zrouter.master, fpm_rib_reset, fnc, 0, |
982 | &fnc->t_ribreset); | |
55eb9d4d | 983 | } else /* Otherwise reschedule next hop group again. */ |
981ca597 RZ |
984 | thread_add_timer(zrouter.master, fpm_nhg_send, fnc, 0, |
985 | &fnc->t_nhgwalk); | |
981ca597 RZ |
986 | } |
987 | ||
018e77bc RZ |
988 | /** |
989 | * Send all RIB installed routes to the connected data plane. | |
990 | */ | |
cc9f21da | 991 | static void fpm_rib_send(struct thread *t) |
018e77bc RZ |
992 | { |
993 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
994 | rib_dest_t *dest; | |
995 | struct route_node *rn; | |
996 | struct route_table *rt; | |
997 | struct zebra_dplane_ctx *ctx; | |
998 | rib_tables_iter_t rt_iter; | |
999 | ||
1000 | /* Allocate temporary context for all transactions. */ | |
1001 | ctx = dplane_ctx_alloc(); | |
1002 | ||
1003 | rt_iter.state = RIB_TABLES_ITER_S_INIT; | |
1004 | while ((rt = rib_tables_iter_next(&rt_iter))) { | |
1005 | for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) { | |
1006 | dest = rib_dest_from_rnode(rn); | |
1007 | /* Skip bad route entries. */ | |
a50404aa | 1008 | if (dest == NULL || dest->selected_fib == NULL) |
018e77bc | 1009 | continue; |
018e77bc RZ |
1010 | |
1011 | /* Check for already sent routes. */ | |
a50404aa | 1012 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)) |
018e77bc | 1013 | continue; |
018e77bc RZ |
1014 | |
1015 | /* Enqueue route install. */ | |
1016 | dplane_ctx_reset(ctx); | |
1017 | dplane_ctx_route_init(ctx, DPLANE_OP_ROUTE_INSTALL, rn, | |
1018 | dest->selected_fib); | |
1019 | if (fpm_nl_enqueue(fnc, ctx) == -1) { | |
1020 | /* Free the temporary allocated context. */ | |
1021 | dplane_ctx_fini(&ctx); | |
1022 | ||
018e77bc RZ |
1023 | thread_add_timer(zrouter.master, fpm_rib_send, |
1024 | fnc, 1, &fnc->t_ribwalk); | |
cc9f21da | 1025 | return; |
018e77bc RZ |
1026 | } |
1027 | ||
1028 | /* Mark as sent. */ | |
1029 | SET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | /* Free the temporary allocated context. */ | |
1034 | dplane_ctx_fini(&ctx); | |
1035 | ||
1036 | /* All RIB routes sent! */ | |
55eb9d4d | 1037 | WALK_FINISH(fnc, FNE_RIB_FINISHED); |
018e77bc | 1038 | |
e41e0f81 RZ |
1039 | /* Schedule next event: RMAC reset. */ |
1040 | thread_add_event(zrouter.master, fpm_rmac_reset, fnc, 0, | |
1041 | &fnc->t_rmacreset); | |
018e77bc RZ |
1042 | } |
1043 | ||
bda10adf RZ |
1044 | /* |
1045 | * The next three functions will handle RMAC enqueue. | |
1046 | */ | |
1047 | struct fpm_rmac_arg { | |
1048 | struct zebra_dplane_ctx *ctx; | |
1049 | struct fpm_nl_ctx *fnc; | |
05843a27 | 1050 | struct zebra_l3vni *zl3vni; |
55eb9d4d | 1051 | bool complete; |
bda10adf RZ |
1052 | }; |
1053 | ||
1ac88792 | 1054 | static void fpm_enqueue_rmac_table(struct hash_bucket *bucket, void *arg) |
bda10adf RZ |
1055 | { |
1056 | struct fpm_rmac_arg *fra = arg; | |
3198b2b3 | 1057 | struct zebra_mac *zrmac = bucket->data; |
bda10adf RZ |
1058 | struct zebra_if *zif = fra->zl3vni->vxlan_if->info; |
1059 | const struct zebra_l2info_vxlan *vxl = &zif->l2info.vxl; | |
1060 | struct zebra_if *br_zif; | |
1061 | vlanid_t vid; | |
1062 | bool sticky; | |
1063 | ||
1064 | /* Entry already sent. */ | |
55eb9d4d | 1065 | if (CHECK_FLAG(zrmac->flags, ZEBRA_MAC_FPM_SENT) || !fra->complete) |
bda10adf RZ |
1066 | return; |
1067 | ||
1068 | sticky = !!CHECK_FLAG(zrmac->flags, | |
1069 | (ZEBRA_MAC_STICKY | ZEBRA_MAC_REMOTE_DEF_GW)); | |
1070 | br_zif = (struct zebra_if *)(zif->brslave_info.br_if->info); | |
1071 | vid = IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(br_zif) ? vxl->access_vlan : 0; | |
1072 | ||
1073 | dplane_ctx_reset(fra->ctx); | |
1074 | dplane_ctx_set_op(fra->ctx, DPLANE_OP_MAC_INSTALL); | |
1075 | dplane_mac_init(fra->ctx, fra->zl3vni->vxlan_if, | |
f2a0ba3a | 1076 | zif->brslave_info.br_if, vid, |
f188e68e AK |
1077 | &zrmac->macaddr, zrmac->fwd_info.r_vtep_ip, sticky, |
1078 | 0 /*nhg*/, 0 /*update_flags*/); | |
bda10adf | 1079 | if (fpm_nl_enqueue(fra->fnc, fra->ctx) == -1) { |
bda10adf RZ |
1080 | thread_add_timer(zrouter.master, fpm_rmac_send, |
1081 | fra->fnc, 1, &fra->fnc->t_rmacwalk); | |
55eb9d4d | 1082 | fra->complete = false; |
bda10adf RZ |
1083 | } |
1084 | } | |
1085 | ||
1ac88792 | 1086 | static void fpm_enqueue_l3vni_table(struct hash_bucket *bucket, void *arg) |
bda10adf RZ |
1087 | { |
1088 | struct fpm_rmac_arg *fra = arg; | |
05843a27 | 1089 | struct zebra_l3vni *zl3vni = bucket->data; |
bda10adf RZ |
1090 | |
1091 | fra->zl3vni = zl3vni; | |
1092 | hash_iterate(zl3vni->rmac_table, fpm_enqueue_rmac_table, zl3vni); | |
1093 | } | |
1094 | ||
cc9f21da | 1095 | static void fpm_rmac_send(struct thread *t) |
bda10adf RZ |
1096 | { |
1097 | struct fpm_rmac_arg fra; | |
1098 | ||
1099 | fra.fnc = THREAD_ARG(t); | |
1100 | fra.ctx = dplane_ctx_alloc(); | |
55eb9d4d | 1101 | fra.complete = true; |
bda10adf RZ |
1102 | hash_iterate(zrouter.l3vni_table, fpm_enqueue_l3vni_table, &fra); |
1103 | dplane_ctx_fini(&fra.ctx); | |
1104 | ||
55eb9d4d RZ |
1105 | /* RMAC walk completed. */ |
1106 | if (fra.complete) | |
1107 | WALK_FINISH(fra.fnc, FNE_RMAC_FINISHED); | |
bda10adf RZ |
1108 | } |
1109 | ||
981ca597 RZ |
1110 | /* |
1111 | * Resets the next hop FPM flags so we send all next hops again. | |
1112 | */ | |
1113 | static void fpm_nhg_reset_cb(struct hash_bucket *bucket, void *arg) | |
1114 | { | |
1115 | struct nhg_hash_entry *nhe = bucket->data; | |
1116 | ||
1117 | /* Unset FPM installation flag so it gets installed again. */ | |
1118 | UNSET_FLAG(nhe->flags, NEXTHOP_GROUP_FPM); | |
1119 | } | |
1120 | ||
cc9f21da | 1121 | static void fpm_nhg_reset(struct thread *t) |
981ca597 | 1122 | { |
55eb9d4d RZ |
1123 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); |
1124 | ||
981ca597 | 1125 | hash_iterate(zrouter.nhgs_id, fpm_nhg_reset_cb, NULL); |
e41e0f81 RZ |
1126 | |
1127 | /* Schedule next step: send next hop groups. */ | |
1128 | thread_add_event(zrouter.master, fpm_nhg_send, fnc, 0, &fnc->t_nhgwalk); | |
981ca597 RZ |
1129 | } |
1130 | ||
f9bf1ecc DE |
1131 | /* |
1132 | * Resets the LSP FPM flag so we send all LSPs again. | |
1133 | */ | |
1134 | static void fpm_lsp_reset_cb(struct hash_bucket *bucket, void *arg) | |
1135 | { | |
8f74a383 | 1136 | struct zebra_lsp *lsp = bucket->data; |
f9bf1ecc DE |
1137 | |
1138 | UNSET_FLAG(lsp->flags, LSP_FLAG_FPM); | |
1139 | } | |
1140 | ||
cc9f21da | 1141 | static void fpm_lsp_reset(struct thread *t) |
f9bf1ecc DE |
1142 | { |
1143 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1144 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1145 | ||
1146 | hash_iterate(zvrf->lsp_table, fpm_lsp_reset_cb, NULL); | |
1147 | ||
1148 | /* Schedule next step: send LSPs */ | |
1149 | thread_add_event(zrouter.master, fpm_lsp_send, fnc, 0, &fnc->t_lspwalk); | |
f9bf1ecc DE |
1150 | } |
1151 | ||
018e77bc RZ |
1152 | /** |
1153 | * Resets the RIB FPM flags so we send all routes again. | |
1154 | */ | |
cc9f21da | 1155 | static void fpm_rib_reset(struct thread *t) |
018e77bc RZ |
1156 | { |
1157 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1158 | rib_dest_t *dest; | |
1159 | struct route_node *rn; | |
1160 | struct route_table *rt; | |
1161 | rib_tables_iter_t rt_iter; | |
1162 | ||
018e77bc RZ |
1163 | rt_iter.state = RIB_TABLES_ITER_S_INIT; |
1164 | while ((rt = rib_tables_iter_next(&rt_iter))) { | |
1165 | for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) { | |
1166 | dest = rib_dest_from_rnode(rn); | |
1167 | /* Skip bad route entries. */ | |
1168 | if (dest == NULL) | |
1169 | continue; | |
1170 | ||
1171 | UNSET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1172 | } | |
1173 | } | |
1174 | ||
e41e0f81 RZ |
1175 | /* Schedule next step: send RIB routes. */ |
1176 | thread_add_event(zrouter.master, fpm_rib_send, fnc, 0, &fnc->t_ribwalk); | |
018e77bc RZ |
1177 | } |
1178 | ||
bda10adf RZ |
1179 | /* |
1180 | * The next three function will handle RMAC table reset. | |
1181 | */ | |
1ac88792 | 1182 | static void fpm_unset_rmac_table(struct hash_bucket *bucket, void *arg) |
bda10adf | 1183 | { |
3198b2b3 | 1184 | struct zebra_mac *zrmac = bucket->data; |
bda10adf RZ |
1185 | |
1186 | UNSET_FLAG(zrmac->flags, ZEBRA_MAC_FPM_SENT); | |
1187 | } | |
1188 | ||
1ac88792 | 1189 | static void fpm_unset_l3vni_table(struct hash_bucket *bucket, void *arg) |
bda10adf | 1190 | { |
05843a27 | 1191 | struct zebra_l3vni *zl3vni = bucket->data; |
bda10adf RZ |
1192 | |
1193 | hash_iterate(zl3vni->rmac_table, fpm_unset_rmac_table, zl3vni); | |
1194 | } | |
1195 | ||
cc9f21da | 1196 | static void fpm_rmac_reset(struct thread *t) |
bda10adf | 1197 | { |
55eb9d4d RZ |
1198 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); |
1199 | ||
bda10adf RZ |
1200 | hash_iterate(zrouter.l3vni_table, fpm_unset_l3vni_table, NULL); |
1201 | ||
e41e0f81 RZ |
1202 | /* Schedule next event: send RMAC entries. */ |
1203 | thread_add_event(zrouter.master, fpm_rmac_send, fnc, 0, | |
1204 | &fnc->t_rmacwalk); | |
bda10adf RZ |
1205 | } |
1206 | ||
cc9f21da | 1207 | static void fpm_process_queue(struct thread *t) |
ba803a2f RZ |
1208 | { |
1209 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1210 | struct zebra_dplane_ctx *ctx; | |
3f2b998f | 1211 | bool no_bufs = false; |
438dd3e7 | 1212 | uint64_t processed_contexts = 0; |
ba803a2f | 1213 | |
ba803a2f RZ |
1214 | while (true) { |
1215 | /* No space available yet. */ | |
3f2b998f DE |
1216 | if (STREAM_WRITEABLE(fnc->obuf) < NL_PKT_BUF_SIZE) { |
1217 | no_bufs = true; | |
ba803a2f | 1218 | break; |
3f2b998f | 1219 | } |
ba803a2f RZ |
1220 | |
1221 | /* Dequeue next item or quit processing. */ | |
dc693fe0 DE |
1222 | frr_with_mutex (&fnc->ctxqueue_mutex) { |
1223 | ctx = dplane_ctx_dequeue(&fnc->ctxqueue); | |
1224 | } | |
ba803a2f RZ |
1225 | if (ctx == NULL) |
1226 | break; | |
1227 | ||
3a150188 DS |
1228 | /* |
1229 | * Intentionally ignoring the return value | |
1230 | * as that we are ensuring that we can write to | |
1231 | * the output data in the STREAM_WRITEABLE | |
1232 | * check above, so we can ignore the return | |
1233 | */ | |
1234 | (void)fpm_nl_enqueue(fnc, ctx); | |
ba803a2f RZ |
1235 | |
1236 | /* Account the processed entries. */ | |
438dd3e7 | 1237 | processed_contexts++; |
c871e6c9 RZ |
1238 | atomic_fetch_sub_explicit(&fnc->counters.ctxqueue_len, 1, |
1239 | memory_order_relaxed); | |
ba803a2f RZ |
1240 | |
1241 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); | |
1242 | dplane_provider_enqueue_out_ctx(fnc->prov, ctx); | |
1243 | } | |
1244 | ||
438dd3e7 DE |
1245 | /* Update count of processed contexts */ |
1246 | atomic_fetch_add_explicit(&fnc->counters.dplane_contexts, | |
1247 | processed_contexts, memory_order_relaxed); | |
1248 | ||
3f2b998f DE |
1249 | /* Re-schedule if we ran out of buffer space */ |
1250 | if (no_bufs) | |
ba803a2f RZ |
1251 | thread_add_timer(fnc->fthread->master, fpm_process_queue, |
1252 | fnc, 0, &fnc->t_dequeue); | |
1253 | ||
164d8e86 DE |
1254 | /* |
1255 | * Let the dataplane thread know if there are items in the | |
1256 | * output queue to be processed. Otherwise they may sit | |
1257 | * until the dataplane thread gets scheduled for new, | |
1258 | * unrelated work. | |
1259 | */ | |
1260 | if (dplane_provider_out_ctx_queue_len(fnc->prov) > 0) | |
1261 | dplane_provider_work_ready(); | |
ba803a2f RZ |
1262 | } |
1263 | ||
3bdd7fca RZ |
1264 | /** |
1265 | * Handles external (e.g. CLI, data plane or others) events. | |
1266 | */ | |
cc9f21da | 1267 | static void fpm_process_event(struct thread *t) |
3bdd7fca RZ |
1268 | { |
1269 | struct fpm_nl_ctx *fnc = THREAD_ARG(t); | |
1270 | int event = THREAD_VAL(t); | |
1271 | ||
1272 | switch (event) { | |
1273 | case FNE_DISABLE: | |
e5e444d8 | 1274 | zlog_info("%s: manual FPM disable event", __func__); |
3bdd7fca | 1275 | fnc->disabled = true; |
c871e6c9 RZ |
1276 | atomic_fetch_add_explicit(&fnc->counters.user_disables, 1, |
1277 | memory_order_relaxed); | |
3bdd7fca RZ |
1278 | |
1279 | /* Call reconnect to disable timers and clean up context. */ | |
1280 | fpm_reconnect(fnc); | |
1281 | break; | |
1282 | ||
1283 | case FNE_RECONNECT: | |
e5e444d8 | 1284 | zlog_info("%s: manual FPM reconnect event", __func__); |
3bdd7fca | 1285 | fnc->disabled = false; |
c871e6c9 RZ |
1286 | atomic_fetch_add_explicit(&fnc->counters.user_configures, 1, |
1287 | memory_order_relaxed); | |
3bdd7fca RZ |
1288 | fpm_reconnect(fnc); |
1289 | break; | |
1290 | ||
6cc059cd | 1291 | case FNE_RESET_COUNTERS: |
e5e444d8 | 1292 | zlog_info("%s: manual FPM counters reset event", __func__); |
6cc059cd RZ |
1293 | memset(&fnc->counters, 0, sizeof(fnc->counters)); |
1294 | break; | |
1295 | ||
b55ab92a RZ |
1296 | case FNE_TOGGLE_NHG: |
1297 | zlog_info("%s: toggle next hop groups support", __func__); | |
1298 | fnc->use_nhg = !fnc->use_nhg; | |
1299 | fpm_reconnect(fnc); | |
1300 | break; | |
1301 | ||
a2032324 RZ |
1302 | case FNE_INTERNAL_RECONNECT: |
1303 | fpm_reconnect(fnc); | |
1304 | break; | |
1305 | ||
55eb9d4d RZ |
1306 | case FNE_NHG_FINISHED: |
1307 | if (IS_ZEBRA_DEBUG_FPM) | |
1308 | zlog_debug("%s: next hop groups walk finished", | |
1309 | __func__); | |
55eb9d4d RZ |
1310 | break; |
1311 | case FNE_RIB_FINISHED: | |
1312 | if (IS_ZEBRA_DEBUG_FPM) | |
1313 | zlog_debug("%s: RIB walk finished", __func__); | |
55eb9d4d RZ |
1314 | break; |
1315 | case FNE_RMAC_FINISHED: | |
1316 | if (IS_ZEBRA_DEBUG_FPM) | |
1317 | zlog_debug("%s: RMAC walk finished", __func__); | |
55eb9d4d | 1318 | break; |
f9bf1ecc DE |
1319 | case FNE_LSP_FINISHED: |
1320 | if (IS_ZEBRA_DEBUG_FPM) | |
1321 | zlog_debug("%s: LSP walk finished", __func__); | |
1322 | break; | |
55eb9d4d | 1323 | |
3bdd7fca | 1324 | default: |
e5e444d8 RZ |
1325 | if (IS_ZEBRA_DEBUG_FPM) |
1326 | zlog_debug("%s: unhandled event %d", __func__, event); | |
3bdd7fca RZ |
1327 | break; |
1328 | } | |
3bdd7fca RZ |
1329 | } |
1330 | ||
d35f447d RZ |
1331 | /* |
1332 | * Data plane functions. | |
1333 | */ | |
1334 | static int fpm_nl_start(struct zebra_dplane_provider *prov) | |
1335 | { | |
1336 | struct fpm_nl_ctx *fnc; | |
1337 | ||
1338 | fnc = dplane_provider_get_data(prov); | |
1339 | fnc->fthread = frr_pthread_new(NULL, prov_name, prov_name); | |
1340 | assert(frr_pthread_run(fnc->fthread, NULL) == 0); | |
1341 | fnc->ibuf = stream_new(NL_PKT_BUF_SIZE); | |
1342 | fnc->obuf = stream_new(NL_PKT_BUF_SIZE * 128); | |
1343 | pthread_mutex_init(&fnc->obuf_mutex, NULL); | |
1344 | fnc->socket = -1; | |
3bdd7fca | 1345 | fnc->disabled = true; |
ba803a2f RZ |
1346 | fnc->prov = prov; |
1347 | TAILQ_INIT(&fnc->ctxqueue); | |
1348 | pthread_mutex_init(&fnc->ctxqueue_mutex, NULL); | |
d35f447d | 1349 | |
b55ab92a RZ |
1350 | /* Set default values. */ |
1351 | fnc->use_nhg = true; | |
1352 | ||
d35f447d RZ |
1353 | return 0; |
1354 | } | |
1355 | ||
98a87504 | 1356 | static int fpm_nl_finish_early(struct fpm_nl_ctx *fnc) |
d35f447d | 1357 | { |
98a87504 | 1358 | /* Disable all events and close socket. */ |
f9bf1ecc DE |
1359 | THREAD_OFF(fnc->t_lspreset); |
1360 | THREAD_OFF(fnc->t_lspwalk); | |
981ca597 RZ |
1361 | THREAD_OFF(fnc->t_nhgreset); |
1362 | THREAD_OFF(fnc->t_nhgwalk); | |
98a87504 RZ |
1363 | THREAD_OFF(fnc->t_ribreset); |
1364 | THREAD_OFF(fnc->t_ribwalk); | |
1365 | THREAD_OFF(fnc->t_rmacreset); | |
1366 | THREAD_OFF(fnc->t_rmacwalk); | |
1367 | thread_cancel_async(fnc->fthread->master, &fnc->t_read, NULL); | |
1368 | thread_cancel_async(fnc->fthread->master, &fnc->t_write, NULL); | |
1369 | thread_cancel_async(fnc->fthread->master, &fnc->t_connect, NULL); | |
d35f447d | 1370 | |
98a87504 RZ |
1371 | if (fnc->socket != -1) { |
1372 | close(fnc->socket); | |
1373 | fnc->socket = -1; | |
1374 | } | |
1375 | ||
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | static int fpm_nl_finish_late(struct fpm_nl_ctx *fnc) | |
1380 | { | |
1381 | /* Stop the running thread. */ | |
1382 | frr_pthread_stop(fnc->fthread, NULL); | |
1383 | ||
1384 | /* Free all allocated resources. */ | |
1385 | pthread_mutex_destroy(&fnc->obuf_mutex); | |
1386 | pthread_mutex_destroy(&fnc->ctxqueue_mutex); | |
d35f447d RZ |
1387 | stream_free(fnc->ibuf); |
1388 | stream_free(fnc->obuf); | |
98a87504 RZ |
1389 | free(gfnc); |
1390 | gfnc = NULL; | |
d35f447d RZ |
1391 | |
1392 | return 0; | |
1393 | } | |
1394 | ||
98a87504 RZ |
1395 | static int fpm_nl_finish(struct zebra_dplane_provider *prov, bool early) |
1396 | { | |
1397 | struct fpm_nl_ctx *fnc; | |
1398 | ||
1399 | fnc = dplane_provider_get_data(prov); | |
1400 | if (early) | |
1401 | return fpm_nl_finish_early(fnc); | |
1402 | ||
1403 | return fpm_nl_finish_late(fnc); | |
1404 | } | |
1405 | ||
d35f447d RZ |
1406 | static int fpm_nl_process(struct zebra_dplane_provider *prov) |
1407 | { | |
1408 | struct zebra_dplane_ctx *ctx; | |
1409 | struct fpm_nl_ctx *fnc; | |
1410 | int counter, limit; | |
bf2f7839 | 1411 | uint64_t cur_queue, peak_queue = 0, stored_peak_queue; |
d35f447d RZ |
1412 | |
1413 | fnc = dplane_provider_get_data(prov); | |
1414 | limit = dplane_provider_get_work_limit(prov); | |
1415 | for (counter = 0; counter < limit; counter++) { | |
1416 | ctx = dplane_provider_dequeue_in_ctx(prov); | |
1417 | if (ctx == NULL) | |
1418 | break; | |
1419 | ||
1420 | /* | |
1421 | * Skip all notifications if not connected, we'll walk the RIB | |
1422 | * anyway. | |
1423 | */ | |
6cc059cd | 1424 | if (fnc->socket != -1 && fnc->connecting == false) { |
dc693fe0 DE |
1425 | /* |
1426 | * Update the number of queued contexts *before* | |
1427 | * enqueueing, to ensure counter consistency. | |
1428 | */ | |
c871e6c9 RZ |
1429 | atomic_fetch_add_explicit(&fnc->counters.ctxqueue_len, |
1430 | 1, memory_order_relaxed); | |
dc693fe0 DE |
1431 | |
1432 | frr_with_mutex (&fnc->ctxqueue_mutex) { | |
1433 | dplane_ctx_enqueue_tail(&fnc->ctxqueue, ctx); | |
1434 | } | |
1435 | ||
c871e6c9 RZ |
1436 | cur_queue = atomic_load_explicit( |
1437 | &fnc->counters.ctxqueue_len, | |
1438 | memory_order_relaxed); | |
edfeff42 | 1439 | if (peak_queue < cur_queue) |
bf2f7839 | 1440 | peak_queue = cur_queue; |
ba803a2f | 1441 | continue; |
6cc059cd RZ |
1442 | } |
1443 | ||
d35f447d RZ |
1444 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); |
1445 | dplane_provider_enqueue_out_ctx(prov, ctx); | |
1446 | } | |
1447 | ||
bf2f7839 DE |
1448 | /* Update peak queue length, if we just observed a new peak */ |
1449 | stored_peak_queue = atomic_load_explicit( | |
1450 | &fnc->counters.ctxqueue_len_peak, memory_order_relaxed); | |
1451 | if (stored_peak_queue < peak_queue) | |
1452 | atomic_store_explicit(&fnc->counters.ctxqueue_len_peak, | |
1453 | peak_queue, memory_order_relaxed); | |
1454 | ||
c871e6c9 RZ |
1455 | if (atomic_load_explicit(&fnc->counters.ctxqueue_len, |
1456 | memory_order_relaxed) | |
1457 | > 0) | |
ba803a2f RZ |
1458 | thread_add_timer(fnc->fthread->master, fpm_process_queue, |
1459 | fnc, 0, &fnc->t_dequeue); | |
1460 | ||
b677907c DE |
1461 | /* Ensure dataplane thread is rescheduled if we hit the work limit */ |
1462 | if (counter >= limit) | |
1463 | dplane_provider_work_ready(); | |
1464 | ||
d35f447d RZ |
1465 | return 0; |
1466 | } | |
1467 | ||
1468 | static int fpm_nl_new(struct thread_master *tm) | |
1469 | { | |
1470 | struct zebra_dplane_provider *prov = NULL; | |
d35f447d RZ |
1471 | int rv; |
1472 | ||
3bdd7fca | 1473 | gfnc = calloc(1, sizeof(*gfnc)); |
d35f447d RZ |
1474 | rv = dplane_provider_register(prov_name, DPLANE_PRIO_POSTPROCESS, |
1475 | DPLANE_PROV_FLAG_THREADED, fpm_nl_start, | |
3bdd7fca | 1476 | fpm_nl_process, fpm_nl_finish, gfnc, |
d35f447d RZ |
1477 | &prov); |
1478 | ||
1479 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1480 | zlog_debug("%s register status: %d", prov_name, rv); | |
1481 | ||
612c2c15 | 1482 | install_node(&fpm_node); |
6cc059cd RZ |
1483 | install_element(ENABLE_NODE, &fpm_show_counters_cmd); |
1484 | install_element(ENABLE_NODE, &fpm_show_counters_json_cmd); | |
1485 | install_element(ENABLE_NODE, &fpm_reset_counters_cmd); | |
3bdd7fca RZ |
1486 | install_element(CONFIG_NODE, &fpm_set_address_cmd); |
1487 | install_element(CONFIG_NODE, &no_fpm_set_address_cmd); | |
b55ab92a RZ |
1488 | install_element(CONFIG_NODE, &fpm_use_nhg_cmd); |
1489 | install_element(CONFIG_NODE, &no_fpm_use_nhg_cmd); | |
3bdd7fca | 1490 | |
d35f447d RZ |
1491 | return 0; |
1492 | } | |
1493 | ||
1494 | static int fpm_nl_init(void) | |
1495 | { | |
1496 | hook_register(frr_late_init, fpm_nl_new); | |
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | FRR_MODULE_SETUP( | |
1501 | .name = "dplane_fpm_nl", | |
1502 | .version = "0.0.1", | |
1503 | .description = "Data plane plugin for FPM using netlink.", | |
1504 | .init = fpm_nl_init, | |
80413c20 | 1505 | ); |