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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
d35f447d RZ |
2 | /* |
3 | * Zebra dataplane plugin for Forwarding Plane Manager (FPM) using netlink. | |
4 | * | |
5 | * Copyright (C) 2019 Network Device Education Foundation, Inc. ("NetDEF") | |
6 | * Rafael Zalamena | |
d35f447d RZ |
7 | */ |
8 | ||
7309092b DL |
9 | #ifdef HAVE_CONFIG_H |
10 | #include "config.h" /* Include this explicitly */ | |
11 | #endif | |
12 | ||
d35f447d RZ |
13 | #include <arpa/inet.h> |
14 | ||
15 | #include <sys/types.h> | |
16 | #include <sys/socket.h> | |
17 | ||
18 | #include <errno.h> | |
19 | #include <string.h> | |
20 | ||
d35f447d | 21 | #include "lib/zebra.h" |
6cc059cd | 22 | #include "lib/json.h" |
d35f447d | 23 | #include "lib/libfrr.h" |
c871e6c9 | 24 | #include "lib/frratomic.h" |
3bdd7fca | 25 | #include "lib/command.h" |
d35f447d RZ |
26 | #include "lib/memory.h" |
27 | #include "lib/network.h" | |
28 | #include "lib/ns.h" | |
29 | #include "lib/frr_pthread.h" | |
e5e444d8 | 30 | #include "zebra/debug.h" |
bda10adf | 31 | #include "zebra/interface.h" |
d35f447d | 32 | #include "zebra/zebra_dplane.h" |
b300c8bb | 33 | #include "zebra/zebra_mpls.h" |
018e77bc | 34 | #include "zebra/zebra_router.h" |
8d30ff3b SR |
35 | #include "zebra/interface.h" |
36 | #include "zebra/zebra_vxlan_private.h" | |
b2998086 PR |
37 | #include "zebra/zebra_evpn.h" |
38 | #include "zebra/zebra_evpn_mac.h" | |
d35f447d RZ |
39 | #include "zebra/kernel_netlink.h" |
40 | #include "zebra/rt_netlink.h" | |
41 | #include "zebra/debug.h" | |
a0e11736 | 42 | #include "fpm/fpm.h" |
d35f447d RZ |
43 | |
44 | #define SOUTHBOUND_DEFAULT_ADDR INADDR_LOOPBACK | |
45 | #define SOUTHBOUND_DEFAULT_PORT 2620 | |
46 | ||
a179ba35 RZ |
47 | /** |
48 | * FPM header: | |
49 | * { | |
50 | * version: 1 byte (always 1), | |
51 | * type: 1 byte (1 for netlink, 2 protobuf), | |
52 | * len: 2 bytes (network order), | |
53 | * } | |
54 | * | |
55 | * This header is used with any format to tell the users how many bytes to | |
56 | * expect. | |
57 | */ | |
58 | #define FPM_HEADER_SIZE 4 | |
59 | ||
d35f447d RZ |
60 | static const char *prov_name = "dplane_fpm_nl"; |
61 | ||
62 | struct fpm_nl_ctx { | |
63 | /* data plane connection. */ | |
64 | int socket; | |
3bdd7fca | 65 | bool disabled; |
d35f447d | 66 | bool connecting; |
b55ab92a | 67 | bool use_nhg; |
d35f447d RZ |
68 | struct sockaddr_storage addr; |
69 | ||
70 | /* data plane buffers. */ | |
71 | struct stream *ibuf; | |
72 | struct stream *obuf; | |
73 | pthread_mutex_t obuf_mutex; | |
74 | ||
ba803a2f RZ |
75 | /* |
76 | * data plane context queue: | |
77 | * When a FPM server connection becomes a bottleneck, we must keep the | |
78 | * data plane contexts until we get a chance to process them. | |
79 | */ | |
ac96497c | 80 | struct dplane_ctx_list_head ctxqueue; |
ba803a2f RZ |
81 | pthread_mutex_t ctxqueue_mutex; |
82 | ||
d35f447d | 83 | /* data plane events. */ |
ba803a2f | 84 | struct zebra_dplane_provider *prov; |
d35f447d | 85 | struct frr_pthread *fthread; |
e6685141 DS |
86 | struct event *t_connect; |
87 | struct event *t_read; | |
88 | struct event *t_write; | |
89 | struct event *t_event; | |
90 | struct event *t_nhg; | |
91 | struct event *t_dequeue; | |
018e77bc RZ |
92 | |
93 | /* zebra events. */ | |
e6685141 DS |
94 | struct event *t_lspreset; |
95 | struct event *t_lspwalk; | |
96 | struct event *t_nhgreset; | |
97 | struct event *t_nhgwalk; | |
98 | struct event *t_ribreset; | |
99 | struct event *t_ribwalk; | |
100 | struct event *t_rmacreset; | |
101 | struct event *t_rmacwalk; | |
6cc059cd RZ |
102 | |
103 | /* Statistic counters. */ | |
104 | struct { | |
105 | /* Amount of bytes read into ibuf. */ | |
770a8d28 | 106 | _Atomic uint32_t bytes_read; |
6cc059cd | 107 | /* Amount of bytes written from obuf. */ |
770a8d28 | 108 | _Atomic uint32_t bytes_sent; |
ad4d1022 | 109 | /* Output buffer current usage. */ |
770a8d28 | 110 | _Atomic uint32_t obuf_bytes; |
ad4d1022 | 111 | /* Output buffer peak usage. */ |
770a8d28 | 112 | _Atomic uint32_t obuf_peak; |
6cc059cd RZ |
113 | |
114 | /* Amount of connection closes. */ | |
770a8d28 | 115 | _Atomic uint32_t connection_closes; |
6cc059cd | 116 | /* Amount of connection errors. */ |
770a8d28 | 117 | _Atomic uint32_t connection_errors; |
6cc059cd RZ |
118 | |
119 | /* Amount of user configurations: FNE_RECONNECT. */ | |
770a8d28 | 120 | _Atomic uint32_t user_configures; |
6cc059cd | 121 | /* Amount of user disable requests: FNE_DISABLE. */ |
770a8d28 | 122 | _Atomic uint32_t user_disables; |
6cc059cd RZ |
123 | |
124 | /* Amount of data plane context processed. */ | |
770a8d28 | 125 | _Atomic uint32_t dplane_contexts; |
ba803a2f | 126 | /* Amount of data plane contexts enqueued. */ |
770a8d28 | 127 | _Atomic uint32_t ctxqueue_len; |
ba803a2f | 128 | /* Peak amount of data plane contexts enqueued. */ |
770a8d28 | 129 | _Atomic uint32_t ctxqueue_len_peak; |
6cc059cd RZ |
130 | |
131 | /* Amount of buffer full events. */ | |
770a8d28 | 132 | _Atomic uint32_t buffer_full; |
6cc059cd | 133 | } counters; |
770a8d28 | 134 | } *gfnc; |
3bdd7fca RZ |
135 | |
136 | enum fpm_nl_events { | |
137 | /* Ask for FPM to reconnect the external server. */ | |
138 | FNE_RECONNECT, | |
139 | /* Disable FPM. */ | |
140 | FNE_DISABLE, | |
6cc059cd RZ |
141 | /* Reset counters. */ |
142 | FNE_RESET_COUNTERS, | |
b55ab92a RZ |
143 | /* Toggle next hop group feature. */ |
144 | FNE_TOGGLE_NHG, | |
a2032324 RZ |
145 | /* Reconnect request by our own code to avoid races. */ |
146 | FNE_INTERNAL_RECONNECT, | |
55eb9d4d | 147 | |
f9bf1ecc DE |
148 | /* LSP walk finished. */ |
149 | FNE_LSP_FINISHED, | |
55eb9d4d RZ |
150 | /* Next hop groups walk finished. */ |
151 | FNE_NHG_FINISHED, | |
152 | /* RIB walk finished. */ | |
153 | FNE_RIB_FINISHED, | |
154 | /* RMAC walk finished. */ | |
155 | FNE_RMAC_FINISHED, | |
d35f447d RZ |
156 | }; |
157 | ||
a2032324 | 158 | #define FPM_RECONNECT(fnc) \ |
907a2395 DS |
159 | event_add_event((fnc)->fthread->master, fpm_process_event, (fnc), \ |
160 | FNE_INTERNAL_RECONNECT, &(fnc)->t_event) | |
a2032324 | 161 | |
55eb9d4d | 162 | #define WALK_FINISH(fnc, ev) \ |
907a2395 DS |
163 | event_add_event((fnc)->fthread->master, fpm_process_event, (fnc), \ |
164 | (ev), NULL) | |
55eb9d4d | 165 | |
018e77bc RZ |
166 | /* |
167 | * Prototypes. | |
168 | */ | |
e6685141 | 169 | static void fpm_process_event(struct event *t); |
018e77bc | 170 | static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx); |
e6685141 DS |
171 | static void fpm_lsp_send(struct event *t); |
172 | static void fpm_lsp_reset(struct event *t); | |
173 | static void fpm_nhg_send(struct event *t); | |
174 | static void fpm_nhg_reset(struct event *t); | |
175 | static void fpm_rib_send(struct event *t); | |
176 | static void fpm_rib_reset(struct event *t); | |
177 | static void fpm_rmac_send(struct event *t); | |
178 | static void fpm_rmac_reset(struct event *t); | |
018e77bc | 179 | |
3bdd7fca RZ |
180 | /* |
181 | * CLI. | |
182 | */ | |
6cc059cd RZ |
183 | #define FPM_STR "Forwarding Plane Manager configuration\n" |
184 | ||
3bdd7fca RZ |
185 | DEFUN(fpm_set_address, fpm_set_address_cmd, |
186 | "fpm address <A.B.C.D|X:X::X:X> [port (1-65535)]", | |
6cc059cd | 187 | FPM_STR |
3bdd7fca RZ |
188 | "FPM remote listening server address\n" |
189 | "Remote IPv4 FPM server\n" | |
190 | "Remote IPv6 FPM server\n" | |
191 | "FPM remote listening server port\n" | |
192 | "Remote FPM server port\n") | |
193 | { | |
194 | struct sockaddr_in *sin; | |
195 | struct sockaddr_in6 *sin6; | |
196 | uint16_t port = 0; | |
197 | uint8_t naddr[INET6_BUFSIZ]; | |
198 | ||
199 | if (argc == 5) | |
200 | port = strtol(argv[4]->arg, NULL, 10); | |
201 | ||
202 | /* Handle IPv4 addresses. */ | |
203 | if (inet_pton(AF_INET, argv[2]->arg, naddr) == 1) { | |
204 | sin = (struct sockaddr_in *)&gfnc->addr; | |
205 | ||
206 | memset(sin, 0, sizeof(*sin)); | |
207 | sin->sin_family = AF_INET; | |
208 | sin->sin_port = | |
209 | port ? htons(port) : htons(SOUTHBOUND_DEFAULT_PORT); | |
210 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
211 | sin->sin_len = sizeof(*sin); | |
212 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
213 | memcpy(&sin->sin_addr, naddr, sizeof(sin->sin_addr)); | |
214 | ||
215 | goto ask_reconnect; | |
216 | } | |
217 | ||
218 | /* Handle IPv6 addresses. */ | |
219 | if (inet_pton(AF_INET6, argv[2]->arg, naddr) != 1) { | |
220 | vty_out(vty, "%% Invalid address: %s\n", argv[2]->arg); | |
221 | return CMD_WARNING; | |
222 | } | |
223 | ||
224 | sin6 = (struct sockaddr_in6 *)&gfnc->addr; | |
225 | memset(sin6, 0, sizeof(*sin6)); | |
226 | sin6->sin6_family = AF_INET6; | |
227 | sin6->sin6_port = port ? htons(port) : htons(SOUTHBOUND_DEFAULT_PORT); | |
228 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
229 | sin6->sin6_len = sizeof(*sin6); | |
230 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
231 | memcpy(&sin6->sin6_addr, naddr, sizeof(sin6->sin6_addr)); | |
232 | ||
233 | ask_reconnect: | |
907a2395 DS |
234 | event_add_event(gfnc->fthread->master, fpm_process_event, gfnc, |
235 | FNE_RECONNECT, &gfnc->t_event); | |
3bdd7fca RZ |
236 | return CMD_SUCCESS; |
237 | } | |
238 | ||
239 | DEFUN(no_fpm_set_address, no_fpm_set_address_cmd, | |
240 | "no fpm address [<A.B.C.D|X:X::X:X> [port <1-65535>]]", | |
241 | NO_STR | |
6cc059cd | 242 | FPM_STR |
3bdd7fca RZ |
243 | "FPM remote listening server address\n" |
244 | "Remote IPv4 FPM server\n" | |
245 | "Remote IPv6 FPM server\n" | |
246 | "FPM remote listening server port\n" | |
247 | "Remote FPM server port\n") | |
248 | { | |
907a2395 DS |
249 | event_add_event(gfnc->fthread->master, fpm_process_event, gfnc, |
250 | FNE_DISABLE, &gfnc->t_event); | |
3bdd7fca RZ |
251 | return CMD_SUCCESS; |
252 | } | |
253 | ||
b55ab92a RZ |
254 | DEFUN(fpm_use_nhg, fpm_use_nhg_cmd, |
255 | "fpm use-next-hop-groups", | |
256 | FPM_STR | |
257 | "Use netlink next hop groups feature.\n") | |
258 | { | |
259 | /* Already enabled. */ | |
260 | if (gfnc->use_nhg) | |
261 | return CMD_SUCCESS; | |
262 | ||
907a2395 DS |
263 | event_add_event(gfnc->fthread->master, fpm_process_event, gfnc, |
264 | FNE_TOGGLE_NHG, &gfnc->t_nhg); | |
b55ab92a RZ |
265 | |
266 | return CMD_SUCCESS; | |
267 | } | |
268 | ||
269 | DEFUN(no_fpm_use_nhg, no_fpm_use_nhg_cmd, | |
270 | "no fpm use-next-hop-groups", | |
271 | NO_STR | |
272 | FPM_STR | |
273 | "Use netlink next hop groups feature.\n") | |
274 | { | |
275 | /* Already disabled. */ | |
276 | if (!gfnc->use_nhg) | |
277 | return CMD_SUCCESS; | |
278 | ||
907a2395 DS |
279 | event_add_event(gfnc->fthread->master, fpm_process_event, gfnc, |
280 | FNE_TOGGLE_NHG, &gfnc->t_nhg); | |
b55ab92a RZ |
281 | |
282 | return CMD_SUCCESS; | |
283 | } | |
284 | ||
6cc059cd RZ |
285 | DEFUN(fpm_reset_counters, fpm_reset_counters_cmd, |
286 | "clear fpm counters", | |
287 | CLEAR_STR | |
288 | FPM_STR | |
289 | "FPM statistic counters\n") | |
290 | { | |
907a2395 DS |
291 | event_add_event(gfnc->fthread->master, fpm_process_event, gfnc, |
292 | FNE_RESET_COUNTERS, &gfnc->t_event); | |
6cc059cd RZ |
293 | return CMD_SUCCESS; |
294 | } | |
295 | ||
296 | DEFUN(fpm_show_counters, fpm_show_counters_cmd, | |
297 | "show fpm counters", | |
298 | SHOW_STR | |
299 | FPM_STR | |
300 | "FPM statistic counters\n") | |
301 | { | |
302 | vty_out(vty, "%30s\n%30s\n", "FPM counters", "============"); | |
303 | ||
304 | #define SHOW_COUNTER(label, counter) \ | |
770a8d28 | 305 | vty_out(vty, "%28s: %u\n", (label), (counter)) |
6cc059cd RZ |
306 | |
307 | SHOW_COUNTER("Input bytes", gfnc->counters.bytes_read); | |
308 | SHOW_COUNTER("Output bytes", gfnc->counters.bytes_sent); | |
ad4d1022 RZ |
309 | SHOW_COUNTER("Output buffer current size", gfnc->counters.obuf_bytes); |
310 | SHOW_COUNTER("Output buffer peak size", gfnc->counters.obuf_peak); | |
6cc059cd RZ |
311 | SHOW_COUNTER("Connection closes", gfnc->counters.connection_closes); |
312 | SHOW_COUNTER("Connection errors", gfnc->counters.connection_errors); | |
313 | SHOW_COUNTER("Data plane items processed", | |
314 | gfnc->counters.dplane_contexts); | |
ba803a2f RZ |
315 | SHOW_COUNTER("Data plane items enqueued", |
316 | gfnc->counters.ctxqueue_len); | |
317 | SHOW_COUNTER("Data plane items queue peak", | |
318 | gfnc->counters.ctxqueue_len_peak); | |
6cc059cd RZ |
319 | SHOW_COUNTER("Buffer full hits", gfnc->counters.buffer_full); |
320 | SHOW_COUNTER("User FPM configurations", gfnc->counters.user_configures); | |
321 | SHOW_COUNTER("User FPM disable requests", gfnc->counters.user_disables); | |
322 | ||
323 | #undef SHOW_COUNTER | |
324 | ||
325 | return CMD_SUCCESS; | |
326 | } | |
327 | ||
328 | DEFUN(fpm_show_counters_json, fpm_show_counters_json_cmd, | |
329 | "show fpm counters json", | |
330 | SHOW_STR | |
331 | FPM_STR | |
332 | "FPM statistic counters\n" | |
333 | JSON_STR) | |
334 | { | |
335 | struct json_object *jo; | |
336 | ||
337 | jo = json_object_new_object(); | |
338 | json_object_int_add(jo, "bytes-read", gfnc->counters.bytes_read); | |
339 | json_object_int_add(jo, "bytes-sent", gfnc->counters.bytes_sent); | |
ad4d1022 RZ |
340 | json_object_int_add(jo, "obuf-bytes", gfnc->counters.obuf_bytes); |
341 | json_object_int_add(jo, "obuf-bytes-peak", gfnc->counters.obuf_peak); | |
a50404aa RZ |
342 | json_object_int_add(jo, "connection-closes", |
343 | gfnc->counters.connection_closes); | |
344 | json_object_int_add(jo, "connection-errors", | |
345 | gfnc->counters.connection_errors); | |
346 | json_object_int_add(jo, "data-plane-contexts", | |
347 | gfnc->counters.dplane_contexts); | |
ba803a2f RZ |
348 | json_object_int_add(jo, "data-plane-contexts-queue", |
349 | gfnc->counters.ctxqueue_len); | |
350 | json_object_int_add(jo, "data-plane-contexts-queue-peak", | |
351 | gfnc->counters.ctxqueue_len_peak); | |
6cc059cd | 352 | json_object_int_add(jo, "buffer-full-hits", gfnc->counters.buffer_full); |
a50404aa RZ |
353 | json_object_int_add(jo, "user-configures", |
354 | gfnc->counters.user_configures); | |
6cc059cd | 355 | json_object_int_add(jo, "user-disables", gfnc->counters.user_disables); |
962af8a8 | 356 | vty_json(vty, jo); |
6cc059cd RZ |
357 | |
358 | return CMD_SUCCESS; | |
359 | } | |
360 | ||
3bdd7fca RZ |
361 | static int fpm_write_config(struct vty *vty) |
362 | { | |
363 | struct sockaddr_in *sin; | |
364 | struct sockaddr_in6 *sin6; | |
365 | int written = 0; | |
3bdd7fca RZ |
366 | |
367 | if (gfnc->disabled) | |
368 | return written; | |
369 | ||
370 | switch (gfnc->addr.ss_family) { | |
371 | case AF_INET: | |
372 | written = 1; | |
373 | sin = (struct sockaddr_in *)&gfnc->addr; | |
a3adec46 | 374 | vty_out(vty, "fpm address %pI4", &sin->sin_addr); |
3bdd7fca RZ |
375 | if (sin->sin_port != htons(SOUTHBOUND_DEFAULT_PORT)) |
376 | vty_out(vty, " port %d", ntohs(sin->sin_port)); | |
377 | ||
378 | vty_out(vty, "\n"); | |
379 | break; | |
380 | case AF_INET6: | |
381 | written = 1; | |
382 | sin6 = (struct sockaddr_in6 *)&gfnc->addr; | |
a3adec46 | 383 | vty_out(vty, "fpm address %pI6", &sin6->sin6_addr); |
3bdd7fca RZ |
384 | if (sin6->sin6_port != htons(SOUTHBOUND_DEFAULT_PORT)) |
385 | vty_out(vty, " port %d", ntohs(sin6->sin6_port)); | |
386 | ||
387 | vty_out(vty, "\n"); | |
388 | break; | |
389 | ||
390 | default: | |
391 | break; | |
392 | } | |
393 | ||
b55ab92a RZ |
394 | if (!gfnc->use_nhg) { |
395 | vty_out(vty, "no fpm use-next-hop-groups\n"); | |
396 | written = 1; | |
397 | } | |
398 | ||
3bdd7fca RZ |
399 | return written; |
400 | } | |
401 | ||
612c2c15 | 402 | static struct cmd_node fpm_node = { |
893d8beb DL |
403 | .name = "fpm", |
404 | .node = FPM_NODE, | |
3bdd7fca | 405 | .prompt = "", |
612c2c15 | 406 | .config_write = fpm_write_config, |
3bdd7fca RZ |
407 | }; |
408 | ||
d35f447d RZ |
409 | /* |
410 | * FPM functions. | |
411 | */ | |
e6685141 | 412 | static void fpm_connect(struct event *t); |
d35f447d RZ |
413 | |
414 | static void fpm_reconnect(struct fpm_nl_ctx *fnc) | |
415 | { | |
a2032324 | 416 | /* Cancel all zebra threads first. */ |
332beb64 DS |
417 | event_cancel_async(zrouter.master, &fnc->t_lspreset, NULL); |
418 | event_cancel_async(zrouter.master, &fnc->t_lspwalk, NULL); | |
419 | event_cancel_async(zrouter.master, &fnc->t_nhgreset, NULL); | |
420 | event_cancel_async(zrouter.master, &fnc->t_nhgwalk, NULL); | |
421 | event_cancel_async(zrouter.master, &fnc->t_ribreset, NULL); | |
422 | event_cancel_async(zrouter.master, &fnc->t_ribwalk, NULL); | |
423 | event_cancel_async(zrouter.master, &fnc->t_rmacreset, NULL); | |
424 | event_cancel_async(zrouter.master, &fnc->t_rmacwalk, NULL); | |
a2032324 RZ |
425 | |
426 | /* | |
427 | * Grab the lock to empty the streams (data plane might try to | |
428 | * enqueue updates while we are closing). | |
429 | */ | |
d35f447d RZ |
430 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); |
431 | ||
3bdd7fca RZ |
432 | /* Avoid calling close on `-1`. */ |
433 | if (fnc->socket != -1) { | |
434 | close(fnc->socket); | |
435 | fnc->socket = -1; | |
436 | } | |
437 | ||
d35f447d RZ |
438 | stream_reset(fnc->ibuf); |
439 | stream_reset(fnc->obuf); | |
e16d030c DS |
440 | EVENT_OFF(fnc->t_read); |
441 | EVENT_OFF(fnc->t_write); | |
018e77bc | 442 | |
3bdd7fca RZ |
443 | /* FPM is disabled, don't attempt to connect. */ |
444 | if (fnc->disabled) | |
445 | return; | |
446 | ||
907a2395 DS |
447 | event_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, |
448 | &fnc->t_connect); | |
d35f447d RZ |
449 | } |
450 | ||
e6685141 | 451 | static void fpm_read(struct event *t) |
d35f447d | 452 | { |
e16d030c | 453 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
a0e11736 | 454 | fpm_msg_hdr_t fpm; |
d35f447d | 455 | ssize_t rv; |
a0e11736 DS |
456 | char buf[65535]; |
457 | struct nlmsghdr *hdr; | |
458 | struct zebra_dplane_ctx *ctx; | |
459 | size_t available_bytes; | |
460 | size_t hdr_available_bytes; | |
d35f447d RZ |
461 | |
462 | /* Let's ignore the input at the moment. */ | |
463 | rv = stream_read_try(fnc->ibuf, fnc->socket, | |
464 | STREAM_WRITEABLE(fnc->ibuf)); | |
465 | if (rv == 0) { | |
c871e6c9 RZ |
466 | atomic_fetch_add_explicit(&fnc->counters.connection_closes, 1, |
467 | memory_order_relaxed); | |
e5e444d8 RZ |
468 | |
469 | if (IS_ZEBRA_DEBUG_FPM) | |
470 | zlog_debug("%s: connection closed", __func__); | |
471 | ||
a2032324 | 472 | FPM_RECONNECT(fnc); |
cc9f21da | 473 | return; |
d35f447d RZ |
474 | } |
475 | if (rv == -1) { | |
c871e6c9 RZ |
476 | atomic_fetch_add_explicit(&fnc->counters.connection_errors, 1, |
477 | memory_order_relaxed); | |
e5e444d8 RZ |
478 | zlog_warn("%s: connection failure: %s", __func__, |
479 | strerror(errno)); | |
a2032324 | 480 | FPM_RECONNECT(fnc); |
cc9f21da | 481 | return; |
d35f447d | 482 | } |
7d83e139 DS |
483 | |
484 | /* Schedule the next read */ | |
907a2395 DS |
485 | event_add_read(fnc->fthread->master, fpm_read, fnc, fnc->socket, |
486 | &fnc->t_read); | |
7d83e139 DS |
487 | |
488 | /* We've got an interruption. */ | |
489 | if (rv == -2) | |
490 | return; | |
491 | ||
d35f447d | 492 | |
6cc059cd | 493 | /* Account all bytes read. */ |
c871e6c9 RZ |
494 | atomic_fetch_add_explicit(&fnc->counters.bytes_read, rv, |
495 | memory_order_relaxed); | |
a0e11736 DS |
496 | |
497 | available_bytes = STREAM_READABLE(fnc->ibuf); | |
498 | while (available_bytes) { | |
499 | if (available_bytes < (ssize_t)FPM_MSG_HDR_LEN) { | |
500 | stream_pulldown(fnc->ibuf); | |
501 | return; | |
502 | } | |
503 | ||
504 | fpm.version = stream_getc(fnc->ibuf); | |
505 | fpm.msg_type = stream_getc(fnc->ibuf); | |
506 | fpm.msg_len = stream_getw(fnc->ibuf); | |
507 | ||
508 | if (fpm.version != FPM_PROTO_VERSION && | |
509 | fpm.msg_type != FPM_MSG_TYPE_NETLINK) { | |
510 | stream_reset(fnc->ibuf); | |
511 | zlog_warn( | |
512 | "%s: Received version/msg_type %u/%u, expected 1/1", | |
513 | __func__, fpm.version, fpm.msg_type); | |
514 | ||
515 | FPM_RECONNECT(fnc); | |
516 | return; | |
517 | } | |
518 | ||
519 | /* | |
520 | * If the passed in length doesn't even fill in the header | |
521 | * something is wrong and reset. | |
522 | */ | |
523 | if (fpm.msg_len < FPM_MSG_HDR_LEN) { | |
524 | zlog_warn( | |
525 | "%s: Received message length: %u that does not even fill the FPM header", | |
526 | __func__, fpm.msg_len); | |
527 | FPM_RECONNECT(fnc); | |
528 | return; | |
529 | } | |
530 | ||
531 | /* | |
532 | * If we have not received the whole payload, reset the stream | |
533 | * back to the beginning of the header and move it to the | |
534 | * top. | |
535 | */ | |
536 | if (fpm.msg_len > available_bytes) { | |
537 | stream_rewind_getp(fnc->ibuf, FPM_MSG_HDR_LEN); | |
538 | stream_pulldown(fnc->ibuf); | |
539 | return; | |
540 | } | |
541 | ||
542 | available_bytes -= FPM_MSG_HDR_LEN; | |
543 | ||
544 | /* | |
545 | * Place the data from the stream into a buffer | |
546 | */ | |
547 | hdr = (struct nlmsghdr *)buf; | |
548 | stream_get(buf, fnc->ibuf, fpm.msg_len - FPM_MSG_HDR_LEN); | |
549 | hdr_available_bytes = fpm.msg_len - FPM_MSG_HDR_LEN; | |
550 | available_bytes -= hdr_available_bytes; | |
551 | ||
552 | /* Sanity check: must be at least header size. */ | |
553 | if (hdr->nlmsg_len < sizeof(*hdr)) { | |
554 | zlog_warn( | |
555 | "%s: [seq=%u] invalid message length %u (< %zu)", | |
556 | __func__, hdr->nlmsg_seq, hdr->nlmsg_len, | |
557 | sizeof(*hdr)); | |
558 | continue; | |
559 | } | |
560 | if (hdr->nlmsg_len > fpm.msg_len) { | |
561 | zlog_warn( | |
562 | "%s: Received a inner header length of %u that is greater than the fpm total length of %u", | |
563 | __func__, hdr->nlmsg_len, fpm.msg_len); | |
564 | FPM_RECONNECT(fnc); | |
565 | } | |
566 | /* Not enough bytes available. */ | |
567 | if (hdr->nlmsg_len > hdr_available_bytes) { | |
568 | zlog_warn( | |
569 | "%s: [seq=%u] invalid message length %u (> %zu)", | |
570 | __func__, hdr->nlmsg_seq, hdr->nlmsg_len, | |
571 | available_bytes); | |
572 | continue; | |
573 | } | |
574 | ||
575 | if (!(hdr->nlmsg_flags & NLM_F_REQUEST)) { | |
576 | if (IS_ZEBRA_DEBUG_FPM) | |
577 | zlog_debug( | |
578 | "%s: [seq=%u] not a request, skipping", | |
579 | __func__, hdr->nlmsg_seq); | |
580 | ||
581 | /* | |
582 | * This request is a bust, go to the next one | |
583 | */ | |
584 | continue; | |
585 | } | |
586 | ||
587 | switch (hdr->nlmsg_type) { | |
588 | case RTM_NEWROUTE: | |
589 | ctx = dplane_ctx_alloc(); | |
590 | dplane_ctx_set_op(ctx, DPLANE_OP_ROUTE_NOTIFY); | |
591 | if (netlink_route_change_read_unicast_internal( | |
592 | hdr, 0, false, ctx) != 1) { | |
593 | dplane_ctx_fini(&ctx); | |
594 | stream_pulldown(fnc->ibuf); | |
c0275ab1 DS |
595 | /* |
596 | * Let's continue to read other messages | |
597 | * Even if we ignore this one. | |
598 | */ | |
a0e11736 DS |
599 | } |
600 | break; | |
601 | default: | |
602 | if (IS_ZEBRA_DEBUG_FPM) | |
603 | zlog_debug( | |
604 | "%s: Received message type %u which is not currently handled", | |
605 | __func__, hdr->nlmsg_type); | |
606 | break; | |
607 | } | |
608 | } | |
609 | ||
610 | stream_reset(fnc->ibuf); | |
d35f447d RZ |
611 | } |
612 | ||
e6685141 | 613 | static void fpm_write(struct event *t) |
d35f447d | 614 | { |
e16d030c | 615 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
d35f447d RZ |
616 | socklen_t statuslen; |
617 | ssize_t bwritten; | |
618 | int rv, status; | |
619 | size_t btotal; | |
620 | ||
621 | if (fnc->connecting == true) { | |
622 | status = 0; | |
623 | statuslen = sizeof(status); | |
624 | ||
625 | rv = getsockopt(fnc->socket, SOL_SOCKET, SO_ERROR, &status, | |
626 | &statuslen); | |
627 | if (rv == -1 || status != 0) { | |
628 | if (rv != -1) | |
e5e444d8 RZ |
629 | zlog_warn("%s: connection failed: %s", __func__, |
630 | strerror(status)); | |
d35f447d | 631 | else |
e5e444d8 RZ |
632 | zlog_warn("%s: SO_ERROR failed: %s", __func__, |
633 | strerror(status)); | |
d35f447d | 634 | |
c871e6c9 RZ |
635 | atomic_fetch_add_explicit( |
636 | &fnc->counters.connection_errors, 1, | |
637 | memory_order_relaxed); | |
6cc059cd | 638 | |
a2032324 | 639 | FPM_RECONNECT(fnc); |
cc9f21da | 640 | return; |
d35f447d RZ |
641 | } |
642 | ||
643 | fnc->connecting = false; | |
018e77bc | 644 | |
f584de52 RZ |
645 | /* |
646 | * Starting with LSPs walk all FPM objects, marking them | |
647 | * as unsent and then replaying them. | |
648 | */ | |
907a2395 DS |
649 | event_add_timer(zrouter.master, fpm_lsp_reset, fnc, 0, |
650 | &fnc->t_lspreset); | |
f584de52 | 651 | |
e1afb97f | 652 | /* Permit receiving messages now. */ |
907a2395 DS |
653 | event_add_read(fnc->fthread->master, fpm_read, fnc, fnc->socket, |
654 | &fnc->t_read); | |
d35f447d RZ |
655 | } |
656 | ||
657 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
658 | ||
659 | while (true) { | |
660 | /* Stream is empty: reset pointers and return. */ | |
661 | if (STREAM_READABLE(fnc->obuf) == 0) { | |
662 | stream_reset(fnc->obuf); | |
663 | break; | |
664 | } | |
665 | ||
666 | /* Try to write all at once. */ | |
667 | btotal = stream_get_endp(fnc->obuf) - | |
668 | stream_get_getp(fnc->obuf); | |
669 | bwritten = write(fnc->socket, stream_pnt(fnc->obuf), btotal); | |
670 | if (bwritten == 0) { | |
c871e6c9 RZ |
671 | atomic_fetch_add_explicit( |
672 | &fnc->counters.connection_closes, 1, | |
673 | memory_order_relaxed); | |
e5e444d8 RZ |
674 | |
675 | if (IS_ZEBRA_DEBUG_FPM) | |
676 | zlog_debug("%s: connection closed", __func__); | |
d35f447d RZ |
677 | break; |
678 | } | |
679 | if (bwritten == -1) { | |
ad4d1022 RZ |
680 | /* Attempt to continue if blocked by a signal. */ |
681 | if (errno == EINTR) | |
682 | continue; | |
683 | /* Receiver is probably slow, lets give it some time. */ | |
684 | if (errno == EAGAIN || errno == EWOULDBLOCK) | |
d35f447d RZ |
685 | break; |
686 | ||
c871e6c9 RZ |
687 | atomic_fetch_add_explicit( |
688 | &fnc->counters.connection_errors, 1, | |
689 | memory_order_relaxed); | |
e5e444d8 RZ |
690 | zlog_warn("%s: connection failure: %s", __func__, |
691 | strerror(errno)); | |
a2032324 RZ |
692 | |
693 | FPM_RECONNECT(fnc); | |
cc9f21da | 694 | return; |
d35f447d RZ |
695 | } |
696 | ||
6cc059cd | 697 | /* Account all bytes sent. */ |
c871e6c9 RZ |
698 | atomic_fetch_add_explicit(&fnc->counters.bytes_sent, bwritten, |
699 | memory_order_relaxed); | |
6cc059cd | 700 | |
ad4d1022 | 701 | /* Account number of bytes free. */ |
c871e6c9 RZ |
702 | atomic_fetch_sub_explicit(&fnc->counters.obuf_bytes, bwritten, |
703 | memory_order_relaxed); | |
ad4d1022 | 704 | |
d35f447d RZ |
705 | stream_forward_getp(fnc->obuf, (size_t)bwritten); |
706 | } | |
707 | ||
708 | /* Stream is not empty yet, we must schedule more writes. */ | |
709 | if (STREAM_READABLE(fnc->obuf)) { | |
ad4d1022 | 710 | stream_pulldown(fnc->obuf); |
907a2395 DS |
711 | event_add_write(fnc->fthread->master, fpm_write, fnc, |
712 | fnc->socket, &fnc->t_write); | |
cc9f21da | 713 | return; |
d35f447d | 714 | } |
d35f447d RZ |
715 | } |
716 | ||
e6685141 | 717 | static void fpm_connect(struct event *t) |
d35f447d | 718 | { |
e16d030c | 719 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
3bdd7fca RZ |
720 | struct sockaddr_in *sin = (struct sockaddr_in *)&fnc->addr; |
721 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&fnc->addr; | |
722 | socklen_t slen; | |
d35f447d RZ |
723 | int rv, sock; |
724 | char addrstr[INET6_ADDRSTRLEN]; | |
725 | ||
3bdd7fca | 726 | sock = socket(fnc->addr.ss_family, SOCK_STREAM, 0); |
d35f447d | 727 | if (sock == -1) { |
6cc059cd | 728 | zlog_err("%s: fpm socket failed: %s", __func__, |
d35f447d | 729 | strerror(errno)); |
907a2395 DS |
730 | event_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, |
731 | &fnc->t_connect); | |
cc9f21da | 732 | return; |
d35f447d RZ |
733 | } |
734 | ||
735 | set_nonblocking(sock); | |
736 | ||
3bdd7fca RZ |
737 | if (fnc->addr.ss_family == AF_INET) { |
738 | inet_ntop(AF_INET, &sin->sin_addr, addrstr, sizeof(addrstr)); | |
739 | slen = sizeof(*sin); | |
740 | } else { | |
741 | inet_ntop(AF_INET6, &sin6->sin6_addr, addrstr, sizeof(addrstr)); | |
742 | slen = sizeof(*sin6); | |
743 | } | |
d35f447d | 744 | |
e5e444d8 RZ |
745 | if (IS_ZEBRA_DEBUG_FPM) |
746 | zlog_debug("%s: attempting to connect to %s:%d", __func__, | |
747 | addrstr, ntohs(sin->sin_port)); | |
d35f447d | 748 | |
3bdd7fca | 749 | rv = connect(sock, (struct sockaddr *)&fnc->addr, slen); |
d35f447d | 750 | if (rv == -1 && errno != EINPROGRESS) { |
c871e6c9 RZ |
751 | atomic_fetch_add_explicit(&fnc->counters.connection_errors, 1, |
752 | memory_order_relaxed); | |
d35f447d RZ |
753 | close(sock); |
754 | zlog_warn("%s: fpm connection failed: %s", __func__, | |
755 | strerror(errno)); | |
907a2395 DS |
756 | event_add_timer(fnc->fthread->master, fpm_connect, fnc, 3, |
757 | &fnc->t_connect); | |
cc9f21da | 758 | return; |
d35f447d RZ |
759 | } |
760 | ||
761 | fnc->connecting = (errno == EINPROGRESS); | |
762 | fnc->socket = sock; | |
e1afb97f | 763 | if (!fnc->connecting) |
907a2395 DS |
764 | event_add_read(fnc->fthread->master, fpm_read, fnc, sock, |
765 | &fnc->t_read); | |
766 | event_add_write(fnc->fthread->master, fpm_write, fnc, sock, | |
767 | &fnc->t_write); | |
d35f447d | 768 | |
f9bf1ecc DE |
769 | /* |
770 | * Starting with LSPs walk all FPM objects, marking them | |
771 | * as unsent and then replaying them. | |
f584de52 RZ |
772 | * |
773 | * If we are not connected, then delay the objects reset/send. | |
f9bf1ecc | 774 | */ |
f584de52 | 775 | if (!fnc->connecting) |
907a2395 DS |
776 | event_add_timer(zrouter.master, fpm_lsp_reset, fnc, 0, |
777 | &fnc->t_lspreset); | |
d35f447d RZ |
778 | } |
779 | ||
780 | /** | |
781 | * Encode data plane operation context into netlink and enqueue it in the FPM | |
782 | * output buffer. | |
783 | * | |
784 | * @param fnc the netlink FPM context. | |
785 | * @param ctx the data plane operation context data. | |
786 | * @return 0 on success or -1 on not enough space. | |
787 | */ | |
788 | static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx) | |
789 | { | |
790 | uint8_t nl_buf[NL_PKT_BUF_SIZE]; | |
791 | size_t nl_buf_len; | |
792 | ssize_t rv; | |
edfeff42 | 793 | uint64_t obytes, obytes_peak; |
b55ab92a RZ |
794 | enum dplane_op_e op = dplane_ctx_get_op(ctx); |
795 | ||
796 | /* | |
797 | * If we were configured to not use next hop groups, then quit as soon | |
798 | * as possible. | |
799 | */ | |
800 | if ((!fnc->use_nhg) | |
801 | && (op == DPLANE_OP_NH_DELETE || op == DPLANE_OP_NH_INSTALL | |
802 | || op == DPLANE_OP_NH_UPDATE)) | |
803 | return 0; | |
d35f447d RZ |
804 | |
805 | nl_buf_len = 0; | |
806 | ||
807 | frr_mutex_lock_autounlock(&fnc->obuf_mutex); | |
808 | ||
b55ab92a | 809 | switch (op) { |
d35f447d RZ |
810 | case DPLANE_OP_ROUTE_UPDATE: |
811 | case DPLANE_OP_ROUTE_DELETE: | |
0be6e7d7 JU |
812 | rv = netlink_route_multipath_msg_encode(RTM_DELROUTE, ctx, |
813 | nl_buf, sizeof(nl_buf), | |
814 | true, fnc->use_nhg); | |
d35f447d | 815 | if (rv <= 0) { |
0be6e7d7 JU |
816 | zlog_err( |
817 | "%s: netlink_route_multipath_msg_encode failed", | |
818 | __func__); | |
d35f447d RZ |
819 | return 0; |
820 | } | |
821 | ||
822 | nl_buf_len = (size_t)rv; | |
d35f447d RZ |
823 | |
824 | /* UPDATE operations need a INSTALL, otherwise just quit. */ | |
b55ab92a | 825 | if (op == DPLANE_OP_ROUTE_DELETE) |
d35f447d RZ |
826 | break; |
827 | ||
828 | /* FALL THROUGH */ | |
829 | case DPLANE_OP_ROUTE_INSTALL: | |
0be6e7d7 | 830 | rv = netlink_route_multipath_msg_encode( |
b55ab92a RZ |
831 | RTM_NEWROUTE, ctx, &nl_buf[nl_buf_len], |
832 | sizeof(nl_buf) - nl_buf_len, true, fnc->use_nhg); | |
d35f447d | 833 | if (rv <= 0) { |
0be6e7d7 JU |
834 | zlog_err( |
835 | "%s: netlink_route_multipath_msg_encode failed", | |
836 | __func__); | |
d35f447d RZ |
837 | return 0; |
838 | } | |
839 | ||
840 | nl_buf_len += (size_t)rv; | |
d35f447d RZ |
841 | break; |
842 | ||
bda10adf RZ |
843 | case DPLANE_OP_MAC_INSTALL: |
844 | case DPLANE_OP_MAC_DELETE: | |
845 | rv = netlink_macfdb_update_ctx(ctx, nl_buf, sizeof(nl_buf)); | |
846 | if (rv <= 0) { | |
e5e444d8 RZ |
847 | zlog_err("%s: netlink_macfdb_update_ctx failed", |
848 | __func__); | |
bda10adf RZ |
849 | return 0; |
850 | } | |
851 | ||
852 | nl_buf_len = (size_t)rv; | |
bda10adf RZ |
853 | break; |
854 | ||
e9a1cd93 | 855 | case DPLANE_OP_NH_DELETE: |
0be6e7d7 | 856 | rv = netlink_nexthop_msg_encode(RTM_DELNEXTHOP, ctx, nl_buf, |
45c12994 | 857 | sizeof(nl_buf), true); |
e9a1cd93 | 858 | if (rv <= 0) { |
0be6e7d7 JU |
859 | zlog_err("%s: netlink_nexthop_msg_encode failed", |
860 | __func__); | |
e9a1cd93 RZ |
861 | return 0; |
862 | } | |
863 | ||
864 | nl_buf_len = (size_t)rv; | |
865 | break; | |
d35f447d RZ |
866 | case DPLANE_OP_NH_INSTALL: |
867 | case DPLANE_OP_NH_UPDATE: | |
0be6e7d7 | 868 | rv = netlink_nexthop_msg_encode(RTM_NEWNEXTHOP, ctx, nl_buf, |
45c12994 | 869 | sizeof(nl_buf), true); |
e9a1cd93 | 870 | if (rv <= 0) { |
0be6e7d7 JU |
871 | zlog_err("%s: netlink_nexthop_msg_encode failed", |
872 | __func__); | |
e9a1cd93 RZ |
873 | return 0; |
874 | } | |
875 | ||
876 | nl_buf_len = (size_t)rv; | |
877 | break; | |
878 | ||
d35f447d RZ |
879 | case DPLANE_OP_LSP_INSTALL: |
880 | case DPLANE_OP_LSP_UPDATE: | |
881 | case DPLANE_OP_LSP_DELETE: | |
b300c8bb DE |
882 | rv = netlink_lsp_msg_encoder(ctx, nl_buf, sizeof(nl_buf)); |
883 | if (rv <= 0) { | |
f9bf1ecc DE |
884 | zlog_err("%s: netlink_lsp_msg_encoder failed", |
885 | __func__); | |
b300c8bb DE |
886 | return 0; |
887 | } | |
888 | ||
889 | nl_buf_len += (size_t)rv; | |
890 | break; | |
891 | ||
d4bcd88d | 892 | /* Un-handled by FPM at this time. */ |
d35f447d RZ |
893 | case DPLANE_OP_PW_INSTALL: |
894 | case DPLANE_OP_PW_UNINSTALL: | |
895 | case DPLANE_OP_ADDR_INSTALL: | |
896 | case DPLANE_OP_ADDR_UNINSTALL: | |
d35f447d RZ |
897 | case DPLANE_OP_NEIGH_INSTALL: |
898 | case DPLANE_OP_NEIGH_UPDATE: | |
899 | case DPLANE_OP_NEIGH_DELETE: | |
900 | case DPLANE_OP_VTEP_ADD: | |
901 | case DPLANE_OP_VTEP_DELETE: | |
902 | case DPLANE_OP_SYS_ROUTE_ADD: | |
903 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
904 | case DPLANE_OP_ROUTE_NOTIFY: | |
905 | case DPLANE_OP_LSP_NOTIFY: | |
d4bcd88d MS |
906 | case DPLANE_OP_RULE_ADD: |
907 | case DPLANE_OP_RULE_DELETE: | |
908 | case DPLANE_OP_RULE_UPDATE: | |
909 | case DPLANE_OP_NEIGH_DISCOVER: | |
910 | case DPLANE_OP_BR_PORT_UPDATE: | |
911 | case DPLANE_OP_IPTABLE_ADD: | |
912 | case DPLANE_OP_IPTABLE_DELETE: | |
913 | case DPLANE_OP_IPSET_ADD: | |
914 | case DPLANE_OP_IPSET_DELETE: | |
915 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
916 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
917 | case DPLANE_OP_NEIGH_IP_INSTALL: | |
918 | case DPLANE_OP_NEIGH_IP_DELETE: | |
919 | case DPLANE_OP_NEIGH_TABLE_UPDATE: | |
920 | case DPLANE_OP_GRE_SET: | |
921 | case DPLANE_OP_INTF_ADDR_ADD: | |
922 | case DPLANE_OP_INTF_ADDR_DEL: | |
728f2017 | 923 | case DPLANE_OP_INTF_NETCONFIG: |
5d414138 SW |
924 | case DPLANE_OP_INTF_INSTALL: |
925 | case DPLANE_OP_INTF_UPDATE: | |
926 | case DPLANE_OP_INTF_DELETE: | |
c317d3f2 SY |
927 | case DPLANE_OP_TC_QDISC_INSTALL: |
928 | case DPLANE_OP_TC_QDISC_UNINSTALL: | |
929 | case DPLANE_OP_TC_CLASS_ADD: | |
930 | case DPLANE_OP_TC_CLASS_DELETE: | |
931 | case DPLANE_OP_TC_CLASS_UPDATE: | |
932 | case DPLANE_OP_TC_FILTER_ADD: | |
933 | case DPLANE_OP_TC_FILTER_DELETE: | |
934 | case DPLANE_OP_TC_FILTER_UPDATE: | |
d35f447d RZ |
935 | case DPLANE_OP_NONE: |
936 | break; | |
937 | ||
d35f447d RZ |
938 | } |
939 | ||
940 | /* Skip empty enqueues. */ | |
941 | if (nl_buf_len == 0) | |
942 | return 0; | |
943 | ||
a179ba35 RZ |
944 | /* We must know if someday a message goes beyond 65KiB. */ |
945 | assert((nl_buf_len + FPM_HEADER_SIZE) <= UINT16_MAX); | |
946 | ||
947 | /* Check if we have enough buffer space. */ | |
948 | if (STREAM_WRITEABLE(fnc->obuf) < (nl_buf_len + FPM_HEADER_SIZE)) { | |
c871e6c9 RZ |
949 | atomic_fetch_add_explicit(&fnc->counters.buffer_full, 1, |
950 | memory_order_relaxed); | |
e5e444d8 RZ |
951 | |
952 | if (IS_ZEBRA_DEBUG_FPM) | |
953 | zlog_debug( | |
954 | "%s: buffer full: wants to write %zu but has %zu", | |
955 | __func__, nl_buf_len + FPM_HEADER_SIZE, | |
956 | STREAM_WRITEABLE(fnc->obuf)); | |
957 | ||
a179ba35 RZ |
958 | return -1; |
959 | } | |
960 | ||
d35f447d | 961 | /* |
a179ba35 RZ |
962 | * Fill in the FPM header information. |
963 | * | |
964 | * See FPM_HEADER_SIZE definition for more information. | |
d35f447d RZ |
965 | */ |
966 | stream_putc(fnc->obuf, 1); | |
967 | stream_putc(fnc->obuf, 1); | |
a179ba35 | 968 | stream_putw(fnc->obuf, nl_buf_len + FPM_HEADER_SIZE); |
d35f447d RZ |
969 | |
970 | /* Write current data. */ | |
971 | stream_write(fnc->obuf, nl_buf, (size_t)nl_buf_len); | |
972 | ||
ad4d1022 | 973 | /* Account number of bytes waiting to be written. */ |
c871e6c9 RZ |
974 | atomic_fetch_add_explicit(&fnc->counters.obuf_bytes, |
975 | nl_buf_len + FPM_HEADER_SIZE, | |
976 | memory_order_relaxed); | |
edfeff42 RZ |
977 | obytes = atomic_load_explicit(&fnc->counters.obuf_bytes, |
978 | memory_order_relaxed); | |
979 | obytes_peak = atomic_load_explicit(&fnc->counters.obuf_peak, | |
980 | memory_order_relaxed); | |
981 | if (obytes_peak < obytes) | |
c871e6c9 RZ |
982 | atomic_store_explicit(&fnc->counters.obuf_peak, obytes, |
983 | memory_order_relaxed); | |
ad4d1022 | 984 | |
d35f447d | 985 | /* Tell the thread to start writing. */ |
907a2395 DS |
986 | event_add_write(fnc->fthread->master, fpm_write, fnc, fnc->socket, |
987 | &fnc->t_write); | |
d35f447d RZ |
988 | |
989 | return 0; | |
990 | } | |
991 | ||
f9bf1ecc DE |
992 | /* |
993 | * LSP walk/send functions | |
994 | */ | |
995 | struct fpm_lsp_arg { | |
996 | struct zebra_dplane_ctx *ctx; | |
997 | struct fpm_nl_ctx *fnc; | |
998 | bool complete; | |
999 | }; | |
1000 | ||
1001 | static int fpm_lsp_send_cb(struct hash_bucket *bucket, void *arg) | |
1002 | { | |
8f74a383 | 1003 | struct zebra_lsp *lsp = bucket->data; |
f9bf1ecc DE |
1004 | struct fpm_lsp_arg *fla = arg; |
1005 | ||
1006 | /* Skip entries which have already been sent */ | |
1007 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_FPM)) | |
1008 | return HASHWALK_CONTINUE; | |
1009 | ||
1010 | dplane_ctx_reset(fla->ctx); | |
1011 | dplane_ctx_lsp_init(fla->ctx, DPLANE_OP_LSP_INSTALL, lsp); | |
1012 | ||
1013 | if (fpm_nl_enqueue(fla->fnc, fla->ctx) == -1) { | |
1014 | fla->complete = false; | |
1015 | return HASHWALK_ABORT; | |
1016 | } | |
1017 | ||
1018 | /* Mark entry as sent */ | |
1019 | SET_FLAG(lsp->flags, LSP_FLAG_FPM); | |
1020 | return HASHWALK_CONTINUE; | |
1021 | } | |
1022 | ||
e6685141 | 1023 | static void fpm_lsp_send(struct event *t) |
f9bf1ecc | 1024 | { |
e16d030c | 1025 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
9a7d1e74 | 1026 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
f9bf1ecc DE |
1027 | struct fpm_lsp_arg fla; |
1028 | ||
1029 | fla.fnc = fnc; | |
1030 | fla.ctx = dplane_ctx_alloc(); | |
1031 | fla.complete = true; | |
1032 | ||
1033 | hash_walk(zvrf->lsp_table, fpm_lsp_send_cb, &fla); | |
1034 | ||
1035 | dplane_ctx_fini(&fla.ctx); | |
1036 | ||
1037 | if (fla.complete) { | |
1038 | WALK_FINISH(fnc, FNE_LSP_FINISHED); | |
1039 | ||
1040 | /* Now move onto routes */ | |
907a2395 DS |
1041 | event_add_timer(zrouter.master, fpm_nhg_reset, fnc, 0, |
1042 | &fnc->t_nhgreset); | |
f9bf1ecc DE |
1043 | } else { |
1044 | /* Didn't finish - reschedule LSP walk */ | |
907a2395 DS |
1045 | event_add_timer(zrouter.master, fpm_lsp_send, fnc, 0, |
1046 | &fnc->t_lspwalk); | |
f9bf1ecc | 1047 | } |
f9bf1ecc DE |
1048 | } |
1049 | ||
981ca597 RZ |
1050 | /* |
1051 | * Next hop walk/send functions. | |
1052 | */ | |
1053 | struct fpm_nhg_arg { | |
1054 | struct zebra_dplane_ctx *ctx; | |
1055 | struct fpm_nl_ctx *fnc; | |
1056 | bool complete; | |
1057 | }; | |
1058 | ||
1059 | static int fpm_nhg_send_cb(struct hash_bucket *bucket, void *arg) | |
1060 | { | |
1061 | struct nhg_hash_entry *nhe = bucket->data; | |
1062 | struct fpm_nhg_arg *fna = arg; | |
1063 | ||
1064 | /* This entry was already sent, skip it. */ | |
1065 | if (CHECK_FLAG(nhe->flags, NEXTHOP_GROUP_FPM)) | |
1066 | return HASHWALK_CONTINUE; | |
1067 | ||
1068 | /* Reset ctx to reuse allocated memory, take a snapshot and send it. */ | |
1069 | dplane_ctx_reset(fna->ctx); | |
1070 | dplane_ctx_nexthop_init(fna->ctx, DPLANE_OP_NH_INSTALL, nhe); | |
1071 | if (fpm_nl_enqueue(fna->fnc, fna->ctx) == -1) { | |
1072 | /* Our buffers are full, lets give it some cycles. */ | |
1073 | fna->complete = false; | |
1074 | return HASHWALK_ABORT; | |
1075 | } | |
1076 | ||
1077 | /* Mark group as sent, so it doesn't get sent again. */ | |
1078 | SET_FLAG(nhe->flags, NEXTHOP_GROUP_FPM); | |
1079 | ||
1080 | return HASHWALK_CONTINUE; | |
1081 | } | |
1082 | ||
e6685141 | 1083 | static void fpm_nhg_send(struct event *t) |
981ca597 | 1084 | { |
e16d030c | 1085 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
981ca597 RZ |
1086 | struct fpm_nhg_arg fna; |
1087 | ||
1088 | fna.fnc = fnc; | |
1089 | fna.ctx = dplane_ctx_alloc(); | |
1090 | fna.complete = true; | |
1091 | ||
1092 | /* Send next hops. */ | |
1f9193c1 RZ |
1093 | if (fnc->use_nhg) |
1094 | hash_walk(zrouter.nhgs_id, fpm_nhg_send_cb, &fna); | |
981ca597 RZ |
1095 | |
1096 | /* `free()` allocated memory. */ | |
1097 | dplane_ctx_fini(&fna.ctx); | |
1098 | ||
1099 | /* We are done sending next hops, lets install the routes now. */ | |
55eb9d4d RZ |
1100 | if (fna.complete) { |
1101 | WALK_FINISH(fnc, FNE_NHG_FINISHED); | |
907a2395 DS |
1102 | event_add_timer(zrouter.master, fpm_rib_reset, fnc, 0, |
1103 | &fnc->t_ribreset); | |
55eb9d4d | 1104 | } else /* Otherwise reschedule next hop group again. */ |
907a2395 DS |
1105 | event_add_timer(zrouter.master, fpm_nhg_send, fnc, 0, |
1106 | &fnc->t_nhgwalk); | |
981ca597 RZ |
1107 | } |
1108 | ||
018e77bc RZ |
1109 | /** |
1110 | * Send all RIB installed routes to the connected data plane. | |
1111 | */ | |
e6685141 | 1112 | static void fpm_rib_send(struct event *t) |
018e77bc | 1113 | { |
e16d030c | 1114 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
018e77bc RZ |
1115 | rib_dest_t *dest; |
1116 | struct route_node *rn; | |
1117 | struct route_table *rt; | |
1118 | struct zebra_dplane_ctx *ctx; | |
1119 | rib_tables_iter_t rt_iter; | |
1120 | ||
1121 | /* Allocate temporary context for all transactions. */ | |
1122 | ctx = dplane_ctx_alloc(); | |
1123 | ||
1124 | rt_iter.state = RIB_TABLES_ITER_S_INIT; | |
1125 | while ((rt = rib_tables_iter_next(&rt_iter))) { | |
1126 | for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) { | |
1127 | dest = rib_dest_from_rnode(rn); | |
1128 | /* Skip bad route entries. */ | |
a50404aa | 1129 | if (dest == NULL || dest->selected_fib == NULL) |
018e77bc | 1130 | continue; |
018e77bc RZ |
1131 | |
1132 | /* Check for already sent routes. */ | |
a50404aa | 1133 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM)) |
018e77bc | 1134 | continue; |
018e77bc RZ |
1135 | |
1136 | /* Enqueue route install. */ | |
1137 | dplane_ctx_reset(ctx); | |
1138 | dplane_ctx_route_init(ctx, DPLANE_OP_ROUTE_INSTALL, rn, | |
1139 | dest->selected_fib); | |
1140 | if (fpm_nl_enqueue(fnc, ctx) == -1) { | |
1141 | /* Free the temporary allocated context. */ | |
1142 | dplane_ctx_fini(&ctx); | |
1143 | ||
907a2395 DS |
1144 | event_add_timer(zrouter.master, fpm_rib_send, |
1145 | fnc, 1, &fnc->t_ribwalk); | |
cc9f21da | 1146 | return; |
018e77bc RZ |
1147 | } |
1148 | ||
1149 | /* Mark as sent. */ | |
1150 | SET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | /* Free the temporary allocated context. */ | |
1155 | dplane_ctx_fini(&ctx); | |
1156 | ||
1157 | /* All RIB routes sent! */ | |
55eb9d4d | 1158 | WALK_FINISH(fnc, FNE_RIB_FINISHED); |
018e77bc | 1159 | |
e41e0f81 | 1160 | /* Schedule next event: RMAC reset. */ |
907a2395 DS |
1161 | event_add_event(zrouter.master, fpm_rmac_reset, fnc, 0, |
1162 | &fnc->t_rmacreset); | |
018e77bc RZ |
1163 | } |
1164 | ||
bda10adf RZ |
1165 | /* |
1166 | * The next three functions will handle RMAC enqueue. | |
1167 | */ | |
1168 | struct fpm_rmac_arg { | |
1169 | struct zebra_dplane_ctx *ctx; | |
1170 | struct fpm_nl_ctx *fnc; | |
05843a27 | 1171 | struct zebra_l3vni *zl3vni; |
55eb9d4d | 1172 | bool complete; |
bda10adf RZ |
1173 | }; |
1174 | ||
1ac88792 | 1175 | static void fpm_enqueue_rmac_table(struct hash_bucket *bucket, void *arg) |
bda10adf RZ |
1176 | { |
1177 | struct fpm_rmac_arg *fra = arg; | |
3198b2b3 | 1178 | struct zebra_mac *zrmac = bucket->data; |
bda10adf | 1179 | struct zebra_if *zif = fra->zl3vni->vxlan_if->info; |
8d30ff3b | 1180 | struct zebra_vxlan_vni *vni; |
bda10adf RZ |
1181 | struct zebra_if *br_zif; |
1182 | vlanid_t vid; | |
1183 | bool sticky; | |
1184 | ||
1185 | /* Entry already sent. */ | |
55eb9d4d | 1186 | if (CHECK_FLAG(zrmac->flags, ZEBRA_MAC_FPM_SENT) || !fra->complete) |
bda10adf RZ |
1187 | return; |
1188 | ||
1189 | sticky = !!CHECK_FLAG(zrmac->flags, | |
1190 | (ZEBRA_MAC_STICKY | ZEBRA_MAC_REMOTE_DEF_GW)); | |
1191 | br_zif = (struct zebra_if *)(zif->brslave_info.br_if->info); | |
8d30ff3b SR |
1192 | vni = zebra_vxlan_if_vni_find(zif, fra->zl3vni->vni); |
1193 | vid = IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(br_zif) ? vni->access_vlan : 0; | |
bda10adf RZ |
1194 | |
1195 | dplane_ctx_reset(fra->ctx); | |
1196 | dplane_ctx_set_op(fra->ctx, DPLANE_OP_MAC_INSTALL); | |
1197 | dplane_mac_init(fra->ctx, fra->zl3vni->vxlan_if, | |
b95ce8fa SR |
1198 | zif->brslave_info.br_if, vid, &zrmac->macaddr, vni->vni, |
1199 | zrmac->fwd_info.r_vtep_ip, sticky, 0 /*nhg*/, | |
1200 | 0 /*update_flags*/); | |
bda10adf | 1201 | if (fpm_nl_enqueue(fra->fnc, fra->ctx) == -1) { |
907a2395 DS |
1202 | event_add_timer(zrouter.master, fpm_rmac_send, fra->fnc, 1, |
1203 | &fra->fnc->t_rmacwalk); | |
55eb9d4d | 1204 | fra->complete = false; |
bda10adf RZ |
1205 | } |
1206 | } | |
1207 | ||
1ac88792 | 1208 | static void fpm_enqueue_l3vni_table(struct hash_bucket *bucket, void *arg) |
bda10adf RZ |
1209 | { |
1210 | struct fpm_rmac_arg *fra = arg; | |
05843a27 | 1211 | struct zebra_l3vni *zl3vni = bucket->data; |
bda10adf RZ |
1212 | |
1213 | fra->zl3vni = zl3vni; | |
1214 | hash_iterate(zl3vni->rmac_table, fpm_enqueue_rmac_table, zl3vni); | |
1215 | } | |
1216 | ||
e6685141 | 1217 | static void fpm_rmac_send(struct event *t) |
bda10adf RZ |
1218 | { |
1219 | struct fpm_rmac_arg fra; | |
1220 | ||
e16d030c | 1221 | fra.fnc = EVENT_ARG(t); |
bda10adf | 1222 | fra.ctx = dplane_ctx_alloc(); |
55eb9d4d | 1223 | fra.complete = true; |
bda10adf RZ |
1224 | hash_iterate(zrouter.l3vni_table, fpm_enqueue_l3vni_table, &fra); |
1225 | dplane_ctx_fini(&fra.ctx); | |
1226 | ||
55eb9d4d RZ |
1227 | /* RMAC walk completed. */ |
1228 | if (fra.complete) | |
1229 | WALK_FINISH(fra.fnc, FNE_RMAC_FINISHED); | |
bda10adf RZ |
1230 | } |
1231 | ||
981ca597 RZ |
1232 | /* |
1233 | * Resets the next hop FPM flags so we send all next hops again. | |
1234 | */ | |
1235 | static void fpm_nhg_reset_cb(struct hash_bucket *bucket, void *arg) | |
1236 | { | |
1237 | struct nhg_hash_entry *nhe = bucket->data; | |
1238 | ||
1239 | /* Unset FPM installation flag so it gets installed again. */ | |
1240 | UNSET_FLAG(nhe->flags, NEXTHOP_GROUP_FPM); | |
1241 | } | |
1242 | ||
e6685141 | 1243 | static void fpm_nhg_reset(struct event *t) |
981ca597 | 1244 | { |
e16d030c | 1245 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
55eb9d4d | 1246 | |
981ca597 | 1247 | hash_iterate(zrouter.nhgs_id, fpm_nhg_reset_cb, NULL); |
e41e0f81 RZ |
1248 | |
1249 | /* Schedule next step: send next hop groups. */ | |
907a2395 | 1250 | event_add_event(zrouter.master, fpm_nhg_send, fnc, 0, &fnc->t_nhgwalk); |
981ca597 RZ |
1251 | } |
1252 | ||
f9bf1ecc DE |
1253 | /* |
1254 | * Resets the LSP FPM flag so we send all LSPs again. | |
1255 | */ | |
1256 | static void fpm_lsp_reset_cb(struct hash_bucket *bucket, void *arg) | |
1257 | { | |
8f74a383 | 1258 | struct zebra_lsp *lsp = bucket->data; |
f9bf1ecc DE |
1259 | |
1260 | UNSET_FLAG(lsp->flags, LSP_FLAG_FPM); | |
1261 | } | |
1262 | ||
e6685141 | 1263 | static void fpm_lsp_reset(struct event *t) |
f9bf1ecc | 1264 | { |
e16d030c | 1265 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
9a7d1e74 | 1266 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
f9bf1ecc DE |
1267 | |
1268 | hash_iterate(zvrf->lsp_table, fpm_lsp_reset_cb, NULL); | |
1269 | ||
1270 | /* Schedule next step: send LSPs */ | |
907a2395 | 1271 | event_add_event(zrouter.master, fpm_lsp_send, fnc, 0, &fnc->t_lspwalk); |
f9bf1ecc DE |
1272 | } |
1273 | ||
018e77bc RZ |
1274 | /** |
1275 | * Resets the RIB FPM flags so we send all routes again. | |
1276 | */ | |
e6685141 | 1277 | static void fpm_rib_reset(struct event *t) |
018e77bc | 1278 | { |
e16d030c | 1279 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
018e77bc RZ |
1280 | rib_dest_t *dest; |
1281 | struct route_node *rn; | |
1282 | struct route_table *rt; | |
1283 | rib_tables_iter_t rt_iter; | |
1284 | ||
018e77bc RZ |
1285 | rt_iter.state = RIB_TABLES_ITER_S_INIT; |
1286 | while ((rt = rib_tables_iter_next(&rt_iter))) { | |
1287 | for (rn = route_top(rt); rn; rn = srcdest_route_next(rn)) { | |
1288 | dest = rib_dest_from_rnode(rn); | |
1289 | /* Skip bad route entries. */ | |
1290 | if (dest == NULL) | |
1291 | continue; | |
1292 | ||
1293 | UNSET_FLAG(dest->flags, RIB_DEST_UPDATE_FPM); | |
1294 | } | |
1295 | } | |
1296 | ||
e41e0f81 | 1297 | /* Schedule next step: send RIB routes. */ |
907a2395 | 1298 | event_add_event(zrouter.master, fpm_rib_send, fnc, 0, &fnc->t_ribwalk); |
018e77bc RZ |
1299 | } |
1300 | ||
bda10adf RZ |
1301 | /* |
1302 | * The next three function will handle RMAC table reset. | |
1303 | */ | |
1ac88792 | 1304 | static void fpm_unset_rmac_table(struct hash_bucket *bucket, void *arg) |
bda10adf | 1305 | { |
3198b2b3 | 1306 | struct zebra_mac *zrmac = bucket->data; |
bda10adf RZ |
1307 | |
1308 | UNSET_FLAG(zrmac->flags, ZEBRA_MAC_FPM_SENT); | |
1309 | } | |
1310 | ||
1ac88792 | 1311 | static void fpm_unset_l3vni_table(struct hash_bucket *bucket, void *arg) |
bda10adf | 1312 | { |
05843a27 | 1313 | struct zebra_l3vni *zl3vni = bucket->data; |
bda10adf RZ |
1314 | |
1315 | hash_iterate(zl3vni->rmac_table, fpm_unset_rmac_table, zl3vni); | |
1316 | } | |
1317 | ||
e6685141 | 1318 | static void fpm_rmac_reset(struct event *t) |
bda10adf | 1319 | { |
e16d030c | 1320 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
55eb9d4d | 1321 | |
bda10adf RZ |
1322 | hash_iterate(zrouter.l3vni_table, fpm_unset_l3vni_table, NULL); |
1323 | ||
e41e0f81 | 1324 | /* Schedule next event: send RMAC entries. */ |
907a2395 DS |
1325 | event_add_event(zrouter.master, fpm_rmac_send, fnc, 0, |
1326 | &fnc->t_rmacwalk); | |
bda10adf RZ |
1327 | } |
1328 | ||
e6685141 | 1329 | static void fpm_process_queue(struct event *t) |
ba803a2f | 1330 | { |
e16d030c | 1331 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
ba803a2f | 1332 | struct zebra_dplane_ctx *ctx; |
3f2b998f | 1333 | bool no_bufs = false; |
438dd3e7 | 1334 | uint64_t processed_contexts = 0; |
ba803a2f | 1335 | |
ba803a2f RZ |
1336 | while (true) { |
1337 | /* No space available yet. */ | |
3f2b998f DE |
1338 | if (STREAM_WRITEABLE(fnc->obuf) < NL_PKT_BUF_SIZE) { |
1339 | no_bufs = true; | |
ba803a2f | 1340 | break; |
3f2b998f | 1341 | } |
ba803a2f RZ |
1342 | |
1343 | /* Dequeue next item or quit processing. */ | |
dc693fe0 DE |
1344 | frr_with_mutex (&fnc->ctxqueue_mutex) { |
1345 | ctx = dplane_ctx_dequeue(&fnc->ctxqueue); | |
1346 | } | |
ba803a2f RZ |
1347 | if (ctx == NULL) |
1348 | break; | |
1349 | ||
3a150188 DS |
1350 | /* |
1351 | * Intentionally ignoring the return value | |
1352 | * as that we are ensuring that we can write to | |
1353 | * the output data in the STREAM_WRITEABLE | |
1354 | * check above, so we can ignore the return | |
1355 | */ | |
3b1caddd RZ |
1356 | if (fnc->socket != -1) |
1357 | (void)fpm_nl_enqueue(fnc, ctx); | |
ba803a2f RZ |
1358 | |
1359 | /* Account the processed entries. */ | |
438dd3e7 | 1360 | processed_contexts++; |
c871e6c9 RZ |
1361 | atomic_fetch_sub_explicit(&fnc->counters.ctxqueue_len, 1, |
1362 | memory_order_relaxed); | |
ba803a2f RZ |
1363 | |
1364 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); | |
1365 | dplane_provider_enqueue_out_ctx(fnc->prov, ctx); | |
1366 | } | |
1367 | ||
438dd3e7 DE |
1368 | /* Update count of processed contexts */ |
1369 | atomic_fetch_add_explicit(&fnc->counters.dplane_contexts, | |
1370 | processed_contexts, memory_order_relaxed); | |
1371 | ||
3f2b998f DE |
1372 | /* Re-schedule if we ran out of buffer space */ |
1373 | if (no_bufs) | |
907a2395 DS |
1374 | event_add_timer(fnc->fthread->master, fpm_process_queue, fnc, 0, |
1375 | &fnc->t_dequeue); | |
ba803a2f | 1376 | |
164d8e86 DE |
1377 | /* |
1378 | * Let the dataplane thread know if there are items in the | |
1379 | * output queue to be processed. Otherwise they may sit | |
1380 | * until the dataplane thread gets scheduled for new, | |
1381 | * unrelated work. | |
1382 | */ | |
1383 | if (dplane_provider_out_ctx_queue_len(fnc->prov) > 0) | |
1384 | dplane_provider_work_ready(); | |
ba803a2f RZ |
1385 | } |
1386 | ||
3bdd7fca RZ |
1387 | /** |
1388 | * Handles external (e.g. CLI, data plane or others) events. | |
1389 | */ | |
e6685141 | 1390 | static void fpm_process_event(struct event *t) |
3bdd7fca | 1391 | { |
e16d030c DS |
1392 | struct fpm_nl_ctx *fnc = EVENT_ARG(t); |
1393 | enum fpm_nl_events event = EVENT_VAL(t); | |
3bdd7fca RZ |
1394 | |
1395 | switch (event) { | |
1396 | case FNE_DISABLE: | |
e5e444d8 | 1397 | zlog_info("%s: manual FPM disable event", __func__); |
3bdd7fca | 1398 | fnc->disabled = true; |
c871e6c9 RZ |
1399 | atomic_fetch_add_explicit(&fnc->counters.user_disables, 1, |
1400 | memory_order_relaxed); | |
3bdd7fca RZ |
1401 | |
1402 | /* Call reconnect to disable timers and clean up context. */ | |
1403 | fpm_reconnect(fnc); | |
1404 | break; | |
1405 | ||
1406 | case FNE_RECONNECT: | |
e5e444d8 | 1407 | zlog_info("%s: manual FPM reconnect event", __func__); |
3bdd7fca | 1408 | fnc->disabled = false; |
c871e6c9 RZ |
1409 | atomic_fetch_add_explicit(&fnc->counters.user_configures, 1, |
1410 | memory_order_relaxed); | |
3bdd7fca RZ |
1411 | fpm_reconnect(fnc); |
1412 | break; | |
1413 | ||
6cc059cd | 1414 | case FNE_RESET_COUNTERS: |
e5e444d8 | 1415 | zlog_info("%s: manual FPM counters reset event", __func__); |
6cc059cd RZ |
1416 | memset(&fnc->counters, 0, sizeof(fnc->counters)); |
1417 | break; | |
1418 | ||
b55ab92a RZ |
1419 | case FNE_TOGGLE_NHG: |
1420 | zlog_info("%s: toggle next hop groups support", __func__); | |
1421 | fnc->use_nhg = !fnc->use_nhg; | |
1422 | fpm_reconnect(fnc); | |
1423 | break; | |
1424 | ||
a2032324 RZ |
1425 | case FNE_INTERNAL_RECONNECT: |
1426 | fpm_reconnect(fnc); | |
1427 | break; | |
1428 | ||
55eb9d4d RZ |
1429 | case FNE_NHG_FINISHED: |
1430 | if (IS_ZEBRA_DEBUG_FPM) | |
1431 | zlog_debug("%s: next hop groups walk finished", | |
1432 | __func__); | |
55eb9d4d RZ |
1433 | break; |
1434 | case FNE_RIB_FINISHED: | |
1435 | if (IS_ZEBRA_DEBUG_FPM) | |
1436 | zlog_debug("%s: RIB walk finished", __func__); | |
55eb9d4d RZ |
1437 | break; |
1438 | case FNE_RMAC_FINISHED: | |
1439 | if (IS_ZEBRA_DEBUG_FPM) | |
1440 | zlog_debug("%s: RMAC walk finished", __func__); | |
55eb9d4d | 1441 | break; |
f9bf1ecc DE |
1442 | case FNE_LSP_FINISHED: |
1443 | if (IS_ZEBRA_DEBUG_FPM) | |
1444 | zlog_debug("%s: LSP walk finished", __func__); | |
1445 | break; | |
3bdd7fca | 1446 | } |
3bdd7fca RZ |
1447 | } |
1448 | ||
d35f447d RZ |
1449 | /* |
1450 | * Data plane functions. | |
1451 | */ | |
1452 | static int fpm_nl_start(struct zebra_dplane_provider *prov) | |
1453 | { | |
1454 | struct fpm_nl_ctx *fnc; | |
1455 | ||
1456 | fnc = dplane_provider_get_data(prov); | |
1457 | fnc->fthread = frr_pthread_new(NULL, prov_name, prov_name); | |
1458 | assert(frr_pthread_run(fnc->fthread, NULL) == 0); | |
1459 | fnc->ibuf = stream_new(NL_PKT_BUF_SIZE); | |
1460 | fnc->obuf = stream_new(NL_PKT_BUF_SIZE * 128); | |
1461 | pthread_mutex_init(&fnc->obuf_mutex, NULL); | |
1462 | fnc->socket = -1; | |
3bdd7fca | 1463 | fnc->disabled = true; |
ba803a2f | 1464 | fnc->prov = prov; |
ac96497c | 1465 | dplane_ctx_q_init(&fnc->ctxqueue); |
ba803a2f | 1466 | pthread_mutex_init(&fnc->ctxqueue_mutex, NULL); |
d35f447d | 1467 | |
b55ab92a RZ |
1468 | /* Set default values. */ |
1469 | fnc->use_nhg = true; | |
1470 | ||
d35f447d RZ |
1471 | return 0; |
1472 | } | |
1473 | ||
98a87504 | 1474 | static int fpm_nl_finish_early(struct fpm_nl_ctx *fnc) |
d35f447d | 1475 | { |
98a87504 | 1476 | /* Disable all events and close socket. */ |
e16d030c DS |
1477 | EVENT_OFF(fnc->t_lspreset); |
1478 | EVENT_OFF(fnc->t_lspwalk); | |
1479 | EVENT_OFF(fnc->t_nhgreset); | |
1480 | EVENT_OFF(fnc->t_nhgwalk); | |
1481 | EVENT_OFF(fnc->t_ribreset); | |
1482 | EVENT_OFF(fnc->t_ribwalk); | |
1483 | EVENT_OFF(fnc->t_rmacreset); | |
1484 | EVENT_OFF(fnc->t_rmacwalk); | |
1485 | EVENT_OFF(fnc->t_event); | |
1486 | EVENT_OFF(fnc->t_nhg); | |
332beb64 DS |
1487 | event_cancel_async(fnc->fthread->master, &fnc->t_read, NULL); |
1488 | event_cancel_async(fnc->fthread->master, &fnc->t_write, NULL); | |
1489 | event_cancel_async(fnc->fthread->master, &fnc->t_connect, NULL); | |
d35f447d | 1490 | |
98a87504 RZ |
1491 | if (fnc->socket != -1) { |
1492 | close(fnc->socket); | |
1493 | fnc->socket = -1; | |
1494 | } | |
1495 | ||
1496 | return 0; | |
1497 | } | |
1498 | ||
1499 | static int fpm_nl_finish_late(struct fpm_nl_ctx *fnc) | |
1500 | { | |
1501 | /* Stop the running thread. */ | |
1502 | frr_pthread_stop(fnc->fthread, NULL); | |
1503 | ||
1504 | /* Free all allocated resources. */ | |
1505 | pthread_mutex_destroy(&fnc->obuf_mutex); | |
1506 | pthread_mutex_destroy(&fnc->ctxqueue_mutex); | |
d35f447d RZ |
1507 | stream_free(fnc->ibuf); |
1508 | stream_free(fnc->obuf); | |
98a87504 RZ |
1509 | free(gfnc); |
1510 | gfnc = NULL; | |
d35f447d RZ |
1511 | |
1512 | return 0; | |
1513 | } | |
1514 | ||
98a87504 RZ |
1515 | static int fpm_nl_finish(struct zebra_dplane_provider *prov, bool early) |
1516 | { | |
1517 | struct fpm_nl_ctx *fnc; | |
1518 | ||
1519 | fnc = dplane_provider_get_data(prov); | |
1520 | if (early) | |
1521 | return fpm_nl_finish_early(fnc); | |
1522 | ||
1523 | return fpm_nl_finish_late(fnc); | |
1524 | } | |
1525 | ||
d35f447d RZ |
1526 | static int fpm_nl_process(struct zebra_dplane_provider *prov) |
1527 | { | |
1528 | struct zebra_dplane_ctx *ctx; | |
1529 | struct fpm_nl_ctx *fnc; | |
1530 | int counter, limit; | |
bf2f7839 | 1531 | uint64_t cur_queue, peak_queue = 0, stored_peak_queue; |
d35f447d RZ |
1532 | |
1533 | fnc = dplane_provider_get_data(prov); | |
1534 | limit = dplane_provider_get_work_limit(prov); | |
1535 | for (counter = 0; counter < limit; counter++) { | |
1536 | ctx = dplane_provider_dequeue_in_ctx(prov); | |
1537 | if (ctx == NULL) | |
1538 | break; | |
1539 | ||
1540 | /* | |
1541 | * Skip all notifications if not connected, we'll walk the RIB | |
1542 | * anyway. | |
1543 | */ | |
6cc059cd | 1544 | if (fnc->socket != -1 && fnc->connecting == false) { |
dc693fe0 DE |
1545 | /* |
1546 | * Update the number of queued contexts *before* | |
1547 | * enqueueing, to ensure counter consistency. | |
1548 | */ | |
c871e6c9 RZ |
1549 | atomic_fetch_add_explicit(&fnc->counters.ctxqueue_len, |
1550 | 1, memory_order_relaxed); | |
dc693fe0 DE |
1551 | |
1552 | frr_with_mutex (&fnc->ctxqueue_mutex) { | |
1553 | dplane_ctx_enqueue_tail(&fnc->ctxqueue, ctx); | |
1554 | } | |
1555 | ||
c871e6c9 RZ |
1556 | cur_queue = atomic_load_explicit( |
1557 | &fnc->counters.ctxqueue_len, | |
1558 | memory_order_relaxed); | |
edfeff42 | 1559 | if (peak_queue < cur_queue) |
bf2f7839 | 1560 | peak_queue = cur_queue; |
ba803a2f | 1561 | continue; |
6cc059cd RZ |
1562 | } |
1563 | ||
d35f447d RZ |
1564 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); |
1565 | dplane_provider_enqueue_out_ctx(prov, ctx); | |
1566 | } | |
1567 | ||
bf2f7839 DE |
1568 | /* Update peak queue length, if we just observed a new peak */ |
1569 | stored_peak_queue = atomic_load_explicit( | |
1570 | &fnc->counters.ctxqueue_len_peak, memory_order_relaxed); | |
1571 | if (stored_peak_queue < peak_queue) | |
1572 | atomic_store_explicit(&fnc->counters.ctxqueue_len_peak, | |
1573 | peak_queue, memory_order_relaxed); | |
1574 | ||
c871e6c9 RZ |
1575 | if (atomic_load_explicit(&fnc->counters.ctxqueue_len, |
1576 | memory_order_relaxed) | |
1577 | > 0) | |
907a2395 DS |
1578 | event_add_timer(fnc->fthread->master, fpm_process_queue, fnc, 0, |
1579 | &fnc->t_dequeue); | |
ba803a2f | 1580 | |
b677907c DE |
1581 | /* Ensure dataplane thread is rescheduled if we hit the work limit */ |
1582 | if (counter >= limit) | |
1583 | dplane_provider_work_ready(); | |
1584 | ||
d35f447d RZ |
1585 | return 0; |
1586 | } | |
1587 | ||
cd9d0537 | 1588 | static int fpm_nl_new(struct event_loop *tm) |
d35f447d RZ |
1589 | { |
1590 | struct zebra_dplane_provider *prov = NULL; | |
d35f447d RZ |
1591 | int rv; |
1592 | ||
3bdd7fca | 1593 | gfnc = calloc(1, sizeof(*gfnc)); |
d35f447d RZ |
1594 | rv = dplane_provider_register(prov_name, DPLANE_PRIO_POSTPROCESS, |
1595 | DPLANE_PROV_FLAG_THREADED, fpm_nl_start, | |
3bdd7fca | 1596 | fpm_nl_process, fpm_nl_finish, gfnc, |
d35f447d RZ |
1597 | &prov); |
1598 | ||
1599 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1600 | zlog_debug("%s register status: %d", prov_name, rv); | |
1601 | ||
612c2c15 | 1602 | install_node(&fpm_node); |
6cc059cd RZ |
1603 | install_element(ENABLE_NODE, &fpm_show_counters_cmd); |
1604 | install_element(ENABLE_NODE, &fpm_show_counters_json_cmd); | |
1605 | install_element(ENABLE_NODE, &fpm_reset_counters_cmd); | |
3bdd7fca RZ |
1606 | install_element(CONFIG_NODE, &fpm_set_address_cmd); |
1607 | install_element(CONFIG_NODE, &no_fpm_set_address_cmd); | |
b55ab92a RZ |
1608 | install_element(CONFIG_NODE, &fpm_use_nhg_cmd); |
1609 | install_element(CONFIG_NODE, &no_fpm_use_nhg_cmd); | |
3bdd7fca | 1610 | |
d35f447d RZ |
1611 | return 0; |
1612 | } | |
1613 | ||
1614 | static int fpm_nl_init(void) | |
1615 | { | |
1616 | hook_register(frr_late_init, fpm_nl_new); | |
1617 | return 0; | |
1618 | } | |
1619 | ||
1620 | FRR_MODULE_SETUP( | |
1621 | .name = "dplane_fpm_nl", | |
1622 | .version = "0.0.1", | |
1623 | .description = "Data plane plugin for FPM using netlink.", | |
1624 | .init = fpm_nl_init, | |
80413c20 | 1625 | ); |