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Commit | Line | Data |
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ea1c14f6 MS |
1 | /* |
2 | * Zebra dataplane layer. | |
3 | * Copyright (c) 2018 Volta Networks, Inc. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | ||
18c37974 | 20 | #include "lib/libfrr.h" |
1d11b21f MS |
21 | #include "lib/debug.h" |
22 | #include "lib/frratomic.h" | |
7cdb1a84 | 23 | #include "lib/frr_pthread.h" |
1d11b21f | 24 | #include "lib/memory.h" |
7cdb1a84 | 25 | #include "lib/queue.h" |
1d11b21f | 26 | #include "lib/zebra.h" |
1485bbe7 | 27 | #include "zebra/zebra_router.h" |
7cdb1a84 | 28 | #include "zebra/zebra_memory.h" |
3801e764 | 29 | #include "zebra/zebra_router.h" |
7cdb1a84 MS |
30 | #include "zebra/zebra_dplane.h" |
31 | #include "zebra/rt.h" | |
32 | #include "zebra/debug.h" | |
33 | ||
34 | /* Memory type for context blocks */ | |
35 | DEFINE_MTYPE(ZEBRA, DP_CTX, "Zebra DPlane Ctx") | |
b8e0423d | 36 | DEFINE_MTYPE(ZEBRA, DP_PROV, "Zebra DPlane Provider") |
7cdb1a84 MS |
37 | |
38 | #ifndef AOK | |
39 | # define AOK 0 | |
40 | #endif | |
41 | ||
e5a60d82 MS |
42 | /* Enable test dataplane provider */ |
43 | /*#define DPLANE_TEST_PROVIDER 1 */ | |
44 | ||
91f16812 MS |
45 | /* Default value for max queued incoming updates */ |
46 | const uint32_t DPLANE_DEFAULT_MAX_QUEUED = 200; | |
47 | ||
c831033f MS |
48 | /* Default value for new work per cycle */ |
49 | const uint32_t DPLANE_DEFAULT_NEW_WORK = 100; | |
50 | ||
7cdb1a84 MS |
51 | /* Validation check macro for context blocks */ |
52 | /* #define DPLANE_DEBUG 1 */ | |
53 | ||
54 | #ifdef DPLANE_DEBUG | |
55 | ||
25779064 MS |
56 | # define DPLANE_CTX_VALID(p) \ |
57 | assert((p) != NULL) | |
7cdb1a84 MS |
58 | |
59 | #else | |
60 | ||
5709131c | 61 | # define DPLANE_CTX_VALID(p) |
7cdb1a84 MS |
62 | |
63 | #endif /* DPLANE_DEBUG */ | |
64 | ||
65 | /* | |
0f461727 | 66 | * Route information captured for route updates. |
7cdb1a84 | 67 | */ |
0f461727 | 68 | struct dplane_route_info { |
7cdb1a84 MS |
69 | |
70 | /* Dest and (optional) source prefixes */ | |
71 | struct prefix zd_dest; | |
72 | struct prefix zd_src; | |
73 | ||
0f461727 MS |
74 | afi_t zd_afi; |
75 | safi_t zd_safi; | |
7cdb1a84 MS |
76 | |
77 | int zd_type; | |
78 | int zd_old_type; | |
79 | ||
7cdb1a84 MS |
80 | route_tag_t zd_tag; |
81 | route_tag_t zd_old_tag; | |
82 | uint32_t zd_metric; | |
01ce7cba | 83 | uint32_t zd_old_metric; |
0f461727 | 84 | |
7cdb1a84 MS |
85 | uint16_t zd_instance; |
86 | uint16_t zd_old_instance; | |
87 | ||
88 | uint8_t zd_distance; | |
89 | uint8_t zd_old_distance; | |
90 | ||
91 | uint32_t zd_mtu; | |
92 | uint32_t zd_nexthop_mtu; | |
93 | ||
7cdb1a84 MS |
94 | /* Nexthops */ |
95 | struct nexthop_group zd_ng; | |
96 | ||
4dfd7a02 | 97 | /* "Previous" nexthops, used only in route updates without netlink */ |
01ce7cba MS |
98 | struct nexthop_group zd_old_ng; |
99 | ||
b8e0423d MS |
100 | /* TODO -- use fixed array of nexthops, to avoid mallocs? */ |
101 | ||
0f461727 MS |
102 | }; |
103 | ||
d613b8e1 MS |
104 | /* |
105 | * Pseudowire info for the dataplane | |
106 | */ | |
107 | struct dplane_pw_info { | |
108 | char ifname[IF_NAMESIZE]; | |
109 | ifindex_t ifindex; | |
110 | int type; | |
111 | int af; | |
112 | int status; | |
113 | uint32_t flags; | |
16d69787 | 114 | union g_addr dest; |
d613b8e1 MS |
115 | mpls_label_t local_label; |
116 | mpls_label_t remote_label; | |
117 | ||
16d69787 MS |
118 | /* Nexthops */ |
119 | struct nexthop_group nhg; | |
120 | ||
d613b8e1 MS |
121 | union pw_protocol_fields fields; |
122 | }; | |
123 | ||
a4a4802a MS |
124 | /* |
125 | * Interface/prefix info for the dataplane | |
126 | */ | |
127 | struct dplane_intf_info { | |
128 | ||
129 | char ifname[INTERFACE_NAMSIZ]; | |
130 | ifindex_t ifindex; | |
131 | ||
132 | uint32_t metric; | |
133 | uint32_t flags; | |
134 | ||
135 | #define DPLANE_INTF_CONNECTED (1 << 0) /* Connected peer, p2p */ | |
136 | #define DPLANE_INTF_SECONDARY (1 << 1) | |
64168803 MS |
137 | #define DPLANE_INTF_BROADCAST (1 << 2) |
138 | #define DPLANE_INTF_HAS_DEST (1 << 3) | |
139 | #define DPLANE_INTF_HAS_LABEL (1 << 4) | |
a4a4802a MS |
140 | |
141 | /* Interface address/prefix */ | |
142 | struct prefix prefix; | |
143 | ||
144 | /* Dest address, for p2p, or broadcast prefix */ | |
145 | struct prefix dest_prefix; | |
146 | ||
147 | char *label; | |
148 | char label_buf[32]; | |
149 | }; | |
150 | ||
0f461727 MS |
151 | /* |
152 | * The context block used to exchange info about route updates across | |
153 | * the boundary between the zebra main context (and pthread) and the | |
154 | * dataplane layer (and pthread). | |
155 | */ | |
156 | struct zebra_dplane_ctx { | |
157 | ||
158 | /* Operation code */ | |
159 | enum dplane_op_e zd_op; | |
160 | ||
161 | /* Status on return */ | |
162 | enum zebra_dplane_result zd_status; | |
163 | ||
164 | /* Dplane provider id */ | |
165 | uint32_t zd_provider; | |
166 | ||
167 | /* Flags - used by providers, e.g. */ | |
168 | int zd_flags; | |
169 | ||
170 | bool zd_is_update; | |
171 | ||
172 | uint32_t zd_seq; | |
173 | uint32_t zd_old_seq; | |
174 | ||
175 | /* TODO -- internal/sub-operation status? */ | |
176 | enum zebra_dplane_result zd_remote_status; | |
177 | enum zebra_dplane_result zd_kernel_status; | |
178 | ||
179 | vrf_id_t zd_vrf_id; | |
180 | uint32_t zd_table_id; | |
181 | ||
a4a4802a | 182 | /* Support info for different kinds of updates */ |
0f461727 MS |
183 | union { |
184 | struct dplane_route_info rinfo; | |
185 | zebra_lsp_t lsp; | |
d613b8e1 | 186 | struct dplane_pw_info pw; |
a4a4802a | 187 | struct dplane_intf_info intf; |
0f461727 MS |
188 | } u; |
189 | ||
190 | /* Namespace info, used especially for netlink kernel communication */ | |
191 | struct zebra_dplane_info zd_ns_info; | |
192 | ||
7cdb1a84 | 193 | /* Embedded list linkage */ |
25779064 | 194 | TAILQ_ENTRY(zebra_dplane_ctx) zd_q_entries; |
7cdb1a84 MS |
195 | }; |
196 | ||
c831033f MS |
197 | /* Flag that can be set by a pre-kernel provider as a signal that an update |
198 | * should bypass the kernel. | |
199 | */ | |
200 | #define DPLANE_CTX_FLAG_NO_KERNEL 0x01 | |
201 | ||
202 | ||
7cdb1a84 MS |
203 | /* |
204 | * Registration block for one dataplane provider. | |
205 | */ | |
25779064 | 206 | struct zebra_dplane_provider { |
7cdb1a84 MS |
207 | /* Name */ |
208 | char dp_name[DPLANE_PROVIDER_NAMELEN + 1]; | |
209 | ||
210 | /* Priority, for ordering among providers */ | |
211 | uint8_t dp_priority; | |
212 | ||
213 | /* Id value */ | |
214 | uint32_t dp_id; | |
215 | ||
c831033f MS |
216 | /* Mutex */ |
217 | pthread_mutex_t dp_mutex; | |
218 | ||
219 | /* Plugin-provided extra data */ | |
220 | void *dp_data; | |
221 | ||
222 | /* Flags */ | |
223 | int dp_flags; | |
224 | ||
4c206c8f | 225 | int (*dp_fp)(struct zebra_dplane_provider *prov); |
7cdb1a84 | 226 | |
4c206c8f | 227 | int (*dp_fini)(struct zebra_dplane_provider *prov, bool early_p); |
18c37974 | 228 | |
0545c373 | 229 | _Atomic uint32_t dp_in_counter; |
c9d17fe8 | 230 | _Atomic uint32_t dp_in_queued; |
c831033f MS |
231 | _Atomic uint32_t dp_in_max; |
232 | _Atomic uint32_t dp_out_counter; | |
c9d17fe8 | 233 | _Atomic uint32_t dp_out_queued; |
c831033f | 234 | _Atomic uint32_t dp_out_max; |
0545c373 | 235 | _Atomic uint32_t dp_error_counter; |
1d11b21f | 236 | |
c831033f MS |
237 | /* Queue of contexts inbound to the provider */ |
238 | struct dplane_ctx_q dp_ctx_in_q; | |
239 | ||
240 | /* Queue of completed contexts outbound from the provider back | |
241 | * towards the dataplane module. | |
242 | */ | |
243 | struct dplane_ctx_q dp_ctx_out_q; | |
7cdb1a84 | 244 | |
c831033f MS |
245 | /* Embedded list linkage for provider objects */ |
246 | TAILQ_ENTRY(zebra_dplane_provider) dp_prov_link; | |
7cdb1a84 MS |
247 | }; |
248 | ||
249 | /* | |
250 | * Globals | |
251 | */ | |
25779064 | 252 | static struct zebra_dplane_globals { |
7cdb1a84 MS |
253 | /* Mutex to control access to dataplane components */ |
254 | pthread_mutex_t dg_mutex; | |
255 | ||
256 | /* Results callback registered by zebra 'core' */ | |
4c206c8f | 257 | int (*dg_results_cb)(struct dplane_ctx_q *ctxlist); |
7cdb1a84 | 258 | |
4dfd7a02 MS |
259 | /* Sentinel for beginning of shutdown */ |
260 | volatile bool dg_is_shutdown; | |
261 | ||
262 | /* Sentinel for end of shutdown */ | |
1d11b21f MS |
263 | volatile bool dg_run; |
264 | ||
7cdb1a84 | 265 | /* Route-update context queue inbound to the dataplane */ |
25779064 | 266 | TAILQ_HEAD(zdg_ctx_q, zebra_dplane_ctx) dg_route_ctx_q; |
7cdb1a84 MS |
267 | |
268 | /* Ordered list of providers */ | |
25779064 | 269 | TAILQ_HEAD(zdg_prov_q, zebra_dplane_provider) dg_providers_q; |
7cdb1a84 | 270 | |
1d11b21f | 271 | /* Counter used to assign internal ids to providers */ |
b8e0423d MS |
272 | uint32_t dg_provider_id; |
273 | ||
91f16812 MS |
274 | /* Limit number of pending, unprocessed updates */ |
275 | _Atomic uint32_t dg_max_queued_updates; | |
276 | ||
cf363e1b MS |
277 | /* Control whether system route notifications should be produced. */ |
278 | bool dg_sys_route_notifs; | |
279 | ||
c831033f MS |
280 | /* Limit number of new updates dequeued at once, to pace an |
281 | * incoming burst. | |
282 | */ | |
283 | uint32_t dg_updates_per_cycle; | |
284 | ||
0545c373 | 285 | _Atomic uint32_t dg_routes_in; |
1d11b21f | 286 | _Atomic uint32_t dg_routes_queued; |
4dfd7a02 | 287 | _Atomic uint32_t dg_routes_queued_max; |
0545c373 | 288 | _Atomic uint32_t dg_route_errors; |
16c628de MS |
289 | _Atomic uint32_t dg_other_errors; |
290 | ||
291 | _Atomic uint32_t dg_lsps_in; | |
16c628de MS |
292 | _Atomic uint32_t dg_lsp_errors; |
293 | ||
97d8d05a MS |
294 | _Atomic uint32_t dg_pws_in; |
295 | _Atomic uint32_t dg_pw_errors; | |
296 | ||
64168803 MS |
297 | _Atomic uint32_t dg_intf_addrs_in; |
298 | _Atomic uint32_t dg_intf_addr_errors; | |
299 | ||
c831033f | 300 | _Atomic uint32_t dg_update_yields; |
1d11b21f | 301 | |
d8c16a95 MS |
302 | /* Dataplane pthread */ |
303 | struct frr_pthread *dg_pthread; | |
304 | ||
7cdb1a84 MS |
305 | /* Event-delivery context 'master' for the dplane */ |
306 | struct thread_master *dg_master; | |
307 | ||
308 | /* Event/'thread' pointer for queued updates */ | |
309 | struct thread *dg_t_update; | |
310 | ||
4dfd7a02 MS |
311 | /* Event pointer for pending shutdown check loop */ |
312 | struct thread *dg_t_shutdown_check; | |
313 | ||
25779064 | 314 | } zdplane_info; |
7cdb1a84 MS |
315 | |
316 | /* | |
c831033f | 317 | * Lock and unlock for interactions with the zebra 'core' pthread |
7cdb1a84 | 318 | */ |
25779064 | 319 | #define DPLANE_LOCK() pthread_mutex_lock(&zdplane_info.dg_mutex) |
25779064 | 320 | #define DPLANE_UNLOCK() pthread_mutex_unlock(&zdplane_info.dg_mutex) |
7cdb1a84 | 321 | |
c831033f MS |
322 | |
323 | /* | |
324 | * Lock and unlock for individual providers | |
325 | */ | |
326 | #define DPLANE_PROV_LOCK(p) pthread_mutex_lock(&((p)->dp_mutex)) | |
327 | #define DPLANE_PROV_UNLOCK(p) pthread_mutex_unlock(&((p)->dp_mutex)) | |
328 | ||
7cdb1a84 | 329 | /* Prototypes */ |
c831033f | 330 | static int dplane_thread_loop(struct thread *event); |
62b8bb7a MS |
331 | static void dplane_info_from_zns(struct zebra_dplane_info *ns_info, |
332 | struct zebra_ns *zns); | |
16c628de MS |
333 | static enum zebra_dplane_result lsp_update_internal(zebra_lsp_t *lsp, |
334 | enum dplane_op_e op); | |
97d8d05a MS |
335 | static enum zebra_dplane_result pw_update_internal(struct zebra_pw *pw, |
336 | enum dplane_op_e op); | |
64168803 MS |
337 | static enum zebra_dplane_result intf_addr_update_internal( |
338 | const struct interface *ifp, const struct connected *ifc, | |
339 | enum dplane_op_e op); | |
7cdb1a84 MS |
340 | |
341 | /* | |
342 | * Public APIs | |
343 | */ | |
344 | ||
ad6aad4d MS |
345 | /* Obtain thread_master for dataplane thread */ |
346 | struct thread_master *dplane_get_thread_master(void) | |
347 | { | |
348 | return zdplane_info.dg_master; | |
349 | } | |
350 | ||
7cdb1a84 | 351 | /* |
b8e0423d | 352 | * Allocate a dataplane update context |
7cdb1a84 | 353 | */ |
25779064 | 354 | static struct zebra_dplane_ctx *dplane_ctx_alloc(void) |
7cdb1a84 | 355 | { |
25779064 | 356 | struct zebra_dplane_ctx *p; |
7cdb1a84 | 357 | |
b8e0423d MS |
358 | /* TODO -- just alloc'ing memory, but would like to maintain |
359 | * a pool | |
360 | */ | |
25779064 | 361 | p = XCALLOC(MTYPE_DP_CTX, sizeof(struct zebra_dplane_ctx)); |
7cdb1a84 | 362 | |
5709131c | 363 | return p; |
7cdb1a84 MS |
364 | } |
365 | ||
cf363e1b MS |
366 | /* Enable system route notifications */ |
367 | void dplane_enable_sys_route_notifs(void) | |
368 | { | |
369 | zdplane_info.dg_sys_route_notifs = true; | |
370 | } | |
371 | ||
7cdb1a84 | 372 | /* |
b8e0423d | 373 | * Free a dataplane results context. |
7cdb1a84 | 374 | */ |
25779064 | 375 | static void dplane_ctx_free(struct zebra_dplane_ctx **pctx) |
7cdb1a84 | 376 | { |
16c628de MS |
377 | if (pctx == NULL) |
378 | return; | |
7cdb1a84 | 379 | |
16c628de MS |
380 | DPLANE_CTX_VALID(*pctx); |
381 | ||
382 | /* TODO -- just freeing memory, but would like to maintain | |
383 | * a pool | |
384 | */ | |
385 | ||
386 | /* Some internal allocations may need to be freed, depending on | |
387 | * the type of info captured in the ctx. | |
388 | */ | |
389 | switch ((*pctx)->zd_op) { | |
390 | case DPLANE_OP_ROUTE_INSTALL: | |
391 | case DPLANE_OP_ROUTE_UPDATE: | |
392 | case DPLANE_OP_ROUTE_DELETE: | |
cf363e1b MS |
393 | case DPLANE_OP_SYS_ROUTE_ADD: |
394 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
b8e0423d | 395 | |
16c628de | 396 | /* Free allocated nexthops */ |
0f461727 | 397 | if ((*pctx)->u.rinfo.zd_ng.nexthop) { |
7cdb1a84 | 398 | /* This deals with recursive nexthops too */ |
0f461727 | 399 | nexthops_free((*pctx)->u.rinfo.zd_ng.nexthop); |
16c628de MS |
400 | |
401 | (*pctx)->u.rinfo.zd_ng.nexthop = NULL; | |
7cdb1a84 MS |
402 | } |
403 | ||
0f461727 | 404 | if ((*pctx)->u.rinfo.zd_old_ng.nexthop) { |
4dfd7a02 | 405 | /* This deals with recursive nexthops too */ |
0f461727 | 406 | nexthops_free((*pctx)->u.rinfo.zd_old_ng.nexthop); |
16c628de MS |
407 | |
408 | (*pctx)->u.rinfo.zd_old_ng.nexthop = NULL; | |
409 | } | |
410 | ||
411 | break; | |
412 | ||
413 | case DPLANE_OP_LSP_INSTALL: | |
414 | case DPLANE_OP_LSP_UPDATE: | |
415 | case DPLANE_OP_LSP_DELETE: | |
416 | { | |
417 | zebra_nhlfe_t *nhlfe, *next; | |
418 | ||
419 | /* Free allocated NHLFEs */ | |
420 | for (nhlfe = (*pctx)->u.lsp.nhlfe_list; nhlfe; nhlfe = next) { | |
421 | next = nhlfe->next; | |
422 | ||
423 | zebra_mpls_nhlfe_del(nhlfe); | |
01ce7cba MS |
424 | } |
425 | ||
16c628de MS |
426 | /* Clear pointers in lsp struct, in case we're cacheing |
427 | * free context structs. | |
428 | */ | |
429 | (*pctx)->u.lsp.nhlfe_list = NULL; | |
430 | (*pctx)->u.lsp.best_nhlfe = NULL; | |
431 | ||
432 | break; | |
433 | } | |
434 | ||
97d8d05a MS |
435 | case DPLANE_OP_PW_INSTALL: |
436 | case DPLANE_OP_PW_UNINSTALL: | |
16d69787 MS |
437 | /* Free allocated nexthops */ |
438 | if ((*pctx)->u.pw.nhg.nexthop) { | |
439 | /* This deals with recursive nexthops too */ | |
440 | nexthops_free((*pctx)->u.pw.nhg.nexthop); | |
441 | ||
442 | (*pctx)->u.pw.nhg.nexthop = NULL; | |
443 | } | |
444 | break; | |
445 | ||
a4a4802a MS |
446 | case DPLANE_OP_ADDR_INSTALL: |
447 | case DPLANE_OP_ADDR_UNINSTALL: | |
64168803 MS |
448 | /* Maybe free label string, if allocated */ |
449 | if ((*pctx)->u.intf.label != NULL && | |
450 | (*pctx)->u.intf.label != (*pctx)->u.intf.label_buf) { | |
451 | free((*pctx)->u.intf.label); | |
452 | (*pctx)->u.intf.label = NULL; | |
453 | } | |
454 | break; | |
455 | ||
16c628de MS |
456 | case DPLANE_OP_NONE: |
457 | break; | |
7cdb1a84 | 458 | } |
16c628de MS |
459 | |
460 | XFREE(MTYPE_DP_CTX, *pctx); | |
461 | *pctx = NULL; | |
7cdb1a84 MS |
462 | } |
463 | ||
464 | /* | |
465 | * Return a context block to the dplane module after processing | |
466 | */ | |
25779064 | 467 | void dplane_ctx_fini(struct zebra_dplane_ctx **pctx) |
7cdb1a84 | 468 | { |
14b0bc8e | 469 | /* TODO -- maintain pool; for now, just free */ |
7cdb1a84 MS |
470 | dplane_ctx_free(pctx); |
471 | } | |
472 | ||
473 | /* Enqueue a context block */ | |
25779064 MS |
474 | void dplane_ctx_enqueue_tail(struct dplane_ctx_q *q, |
475 | const struct zebra_dplane_ctx *ctx) | |
7cdb1a84 | 476 | { |
25779064 | 477 | TAILQ_INSERT_TAIL(q, (struct zebra_dplane_ctx *)ctx, zd_q_entries); |
7cdb1a84 MS |
478 | } |
479 | ||
14b0bc8e MS |
480 | /* Append a list of context blocks to another list */ |
481 | void dplane_ctx_list_append(struct dplane_ctx_q *to_list, | |
482 | struct dplane_ctx_q *from_list) | |
483 | { | |
484 | if (TAILQ_FIRST(from_list)) { | |
485 | TAILQ_CONCAT(to_list, from_list, zd_q_entries); | |
486 | ||
487 | /* And clear 'from' list */ | |
488 | TAILQ_INIT(from_list); | |
489 | } | |
490 | } | |
491 | ||
7cdb1a84 | 492 | /* Dequeue a context block from the head of a list */ |
68b375e0 | 493 | struct zebra_dplane_ctx *dplane_ctx_dequeue(struct dplane_ctx_q *q) |
7cdb1a84 | 494 | { |
25779064 | 495 | struct zebra_dplane_ctx *ctx = TAILQ_FIRST(q); |
5709131c MS |
496 | |
497 | if (ctx) | |
7cdb1a84 | 498 | TAILQ_REMOVE(q, ctx, zd_q_entries); |
7cdb1a84 | 499 | |
68b375e0 | 500 | return ctx; |
7cdb1a84 MS |
501 | } |
502 | ||
503 | /* | |
504 | * Accessors for information from the context object | |
505 | */ | |
25779064 MS |
506 | enum zebra_dplane_result dplane_ctx_get_status( |
507 | const struct zebra_dplane_ctx *ctx) | |
7cdb1a84 MS |
508 | { |
509 | DPLANE_CTX_VALID(ctx); | |
510 | ||
5709131c | 511 | return ctx->zd_status; |
7cdb1a84 MS |
512 | } |
513 | ||
c831033f MS |
514 | void dplane_ctx_set_status(struct zebra_dplane_ctx *ctx, |
515 | enum zebra_dplane_result status) | |
516 | { | |
517 | DPLANE_CTX_VALID(ctx); | |
518 | ||
519 | ctx->zd_status = status; | |
520 | } | |
521 | ||
522 | /* Retrieve last/current provider id */ | |
523 | uint32_t dplane_ctx_get_provider(const struct zebra_dplane_ctx *ctx) | |
524 | { | |
525 | DPLANE_CTX_VALID(ctx); | |
526 | return ctx->zd_provider; | |
527 | } | |
528 | ||
529 | /* Providers run before the kernel can control whether a kernel | |
530 | * update should be done. | |
531 | */ | |
532 | void dplane_ctx_set_skip_kernel(struct zebra_dplane_ctx *ctx) | |
533 | { | |
534 | DPLANE_CTX_VALID(ctx); | |
535 | ||
536 | SET_FLAG(ctx->zd_flags, DPLANE_CTX_FLAG_NO_KERNEL); | |
537 | } | |
538 | ||
539 | bool dplane_ctx_is_skip_kernel(const struct zebra_dplane_ctx *ctx) | |
540 | { | |
541 | DPLANE_CTX_VALID(ctx); | |
542 | ||
543 | return CHECK_FLAG(ctx->zd_flags, DPLANE_CTX_FLAG_NO_KERNEL); | |
544 | } | |
545 | ||
25779064 | 546 | enum dplane_op_e dplane_ctx_get_op(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
547 | { |
548 | DPLANE_CTX_VALID(ctx); | |
549 | ||
5709131c | 550 | return ctx->zd_op; |
7cdb1a84 MS |
551 | } |
552 | ||
5709131c | 553 | const char *dplane_op2str(enum dplane_op_e op) |
7cdb1a84 MS |
554 | { |
555 | const char *ret = "UNKNOWN"; | |
556 | ||
5709131c | 557 | switch (op) { |
7cdb1a84 MS |
558 | case DPLANE_OP_NONE: |
559 | ret = "NONE"; | |
560 | break; | |
561 | ||
562 | /* Route update */ | |
563 | case DPLANE_OP_ROUTE_INSTALL: | |
564 | ret = "ROUTE_INSTALL"; | |
565 | break; | |
566 | case DPLANE_OP_ROUTE_UPDATE: | |
567 | ret = "ROUTE_UPDATE"; | |
568 | break; | |
569 | case DPLANE_OP_ROUTE_DELETE: | |
570 | ret = "ROUTE_DELETE"; | |
571 | break; | |
572 | ||
16c628de MS |
573 | case DPLANE_OP_LSP_INSTALL: |
574 | ret = "LSP_INSTALL"; | |
575 | break; | |
576 | case DPLANE_OP_LSP_UPDATE: | |
577 | ret = "LSP_UPDATE"; | |
578 | break; | |
579 | case DPLANE_OP_LSP_DELETE: | |
580 | ret = "LSP_DELETE"; | |
581 | break; | |
582 | ||
97d8d05a MS |
583 | case DPLANE_OP_PW_INSTALL: |
584 | ret = "PW_INSTALL"; | |
585 | break; | |
586 | case DPLANE_OP_PW_UNINSTALL: | |
587 | ret = "PW_UNINSTALL"; | |
588 | break; | |
589 | ||
cf363e1b MS |
590 | case DPLANE_OP_SYS_ROUTE_ADD: |
591 | ret = "SYS_ROUTE_ADD"; | |
592 | break; | |
593 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
594 | ret = "SYS_ROUTE_DEL"; | |
595 | break; | |
a4a4802a MS |
596 | |
597 | case DPLANE_OP_ADDR_INSTALL: | |
598 | ret = "ADDR_INSTALL"; | |
599 | break; | |
600 | case DPLANE_OP_ADDR_UNINSTALL: | |
601 | ret = "ADDR_UNINSTALL"; | |
602 | break; | |
603 | ||
5b94ec50 | 604 | } |
7cdb1a84 | 605 | |
5709131c | 606 | return ret; |
7cdb1a84 MS |
607 | } |
608 | ||
f183e380 MS |
609 | const char *dplane_res2str(enum zebra_dplane_result res) |
610 | { | |
611 | const char *ret = "<Unknown>"; | |
612 | ||
613 | switch (res) { | |
614 | case ZEBRA_DPLANE_REQUEST_FAILURE: | |
615 | ret = "FAILURE"; | |
616 | break; | |
617 | case ZEBRA_DPLANE_REQUEST_QUEUED: | |
618 | ret = "QUEUED"; | |
619 | break; | |
620 | case ZEBRA_DPLANE_REQUEST_SUCCESS: | |
621 | ret = "SUCCESS"; | |
622 | break; | |
5b94ec50 | 623 | } |
f183e380 MS |
624 | |
625 | return ret; | |
626 | } | |
627 | ||
25779064 | 628 | const struct prefix *dplane_ctx_get_dest(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
629 | { |
630 | DPLANE_CTX_VALID(ctx); | |
631 | ||
0f461727 | 632 | return &(ctx->u.rinfo.zd_dest); |
7cdb1a84 MS |
633 | } |
634 | ||
5709131c | 635 | /* Source prefix is a little special - return NULL for "no src prefix" */ |
25779064 | 636 | const struct prefix *dplane_ctx_get_src(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
637 | { |
638 | DPLANE_CTX_VALID(ctx); | |
639 | ||
0f461727 MS |
640 | if (ctx->u.rinfo.zd_src.prefixlen == 0 && |
641 | IN6_IS_ADDR_UNSPECIFIED(&(ctx->u.rinfo.zd_src.u.prefix6))) { | |
5709131c | 642 | return NULL; |
7cdb1a84 | 643 | } else { |
0f461727 | 644 | return &(ctx->u.rinfo.zd_src); |
7cdb1a84 MS |
645 | } |
646 | } | |
647 | ||
25779064 | 648 | bool dplane_ctx_is_update(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
649 | { |
650 | DPLANE_CTX_VALID(ctx); | |
651 | ||
5709131c | 652 | return ctx->zd_is_update; |
7cdb1a84 MS |
653 | } |
654 | ||
25779064 | 655 | uint32_t dplane_ctx_get_seq(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
656 | { |
657 | DPLANE_CTX_VALID(ctx); | |
658 | ||
5709131c | 659 | return ctx->zd_seq; |
7cdb1a84 MS |
660 | } |
661 | ||
25779064 | 662 | uint32_t dplane_ctx_get_old_seq(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
663 | { |
664 | DPLANE_CTX_VALID(ctx); | |
665 | ||
5709131c | 666 | return ctx->zd_old_seq; |
7cdb1a84 MS |
667 | } |
668 | ||
25779064 | 669 | vrf_id_t dplane_ctx_get_vrf(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
670 | { |
671 | DPLANE_CTX_VALID(ctx); | |
672 | ||
5709131c | 673 | return ctx->zd_vrf_id; |
7cdb1a84 MS |
674 | } |
675 | ||
25779064 | 676 | int dplane_ctx_get_type(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
677 | { |
678 | DPLANE_CTX_VALID(ctx); | |
679 | ||
0f461727 | 680 | return ctx->u.rinfo.zd_type; |
7cdb1a84 MS |
681 | } |
682 | ||
25779064 | 683 | int dplane_ctx_get_old_type(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
684 | { |
685 | DPLANE_CTX_VALID(ctx); | |
686 | ||
0f461727 | 687 | return ctx->u.rinfo.zd_old_type; |
7cdb1a84 MS |
688 | } |
689 | ||
25779064 | 690 | afi_t dplane_ctx_get_afi(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
691 | { |
692 | DPLANE_CTX_VALID(ctx); | |
693 | ||
0f461727 | 694 | return ctx->u.rinfo.zd_afi; |
7cdb1a84 MS |
695 | } |
696 | ||
25779064 | 697 | safi_t dplane_ctx_get_safi(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
698 | { |
699 | DPLANE_CTX_VALID(ctx); | |
700 | ||
0f461727 | 701 | return ctx->u.rinfo.zd_safi; |
7cdb1a84 MS |
702 | } |
703 | ||
25779064 | 704 | uint32_t dplane_ctx_get_table(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
705 | { |
706 | DPLANE_CTX_VALID(ctx); | |
707 | ||
5709131c | 708 | return ctx->zd_table_id; |
7cdb1a84 MS |
709 | } |
710 | ||
25779064 | 711 | route_tag_t dplane_ctx_get_tag(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
712 | { |
713 | DPLANE_CTX_VALID(ctx); | |
714 | ||
0f461727 | 715 | return ctx->u.rinfo.zd_tag; |
7cdb1a84 MS |
716 | } |
717 | ||
25779064 | 718 | route_tag_t dplane_ctx_get_old_tag(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
719 | { |
720 | DPLANE_CTX_VALID(ctx); | |
721 | ||
0f461727 | 722 | return ctx->u.rinfo.zd_old_tag; |
7cdb1a84 MS |
723 | } |
724 | ||
25779064 | 725 | uint16_t dplane_ctx_get_instance(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
726 | { |
727 | DPLANE_CTX_VALID(ctx); | |
728 | ||
0f461727 | 729 | return ctx->u.rinfo.zd_instance; |
7cdb1a84 MS |
730 | } |
731 | ||
25779064 | 732 | uint16_t dplane_ctx_get_old_instance(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
733 | { |
734 | DPLANE_CTX_VALID(ctx); | |
735 | ||
0f461727 | 736 | return ctx->u.rinfo.zd_old_instance; |
7cdb1a84 MS |
737 | } |
738 | ||
25779064 | 739 | uint32_t dplane_ctx_get_metric(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
740 | { |
741 | DPLANE_CTX_VALID(ctx); | |
742 | ||
0f461727 | 743 | return ctx->u.rinfo.zd_metric; |
7cdb1a84 MS |
744 | } |
745 | ||
25779064 | 746 | uint32_t dplane_ctx_get_old_metric(const struct zebra_dplane_ctx *ctx) |
01ce7cba MS |
747 | { |
748 | DPLANE_CTX_VALID(ctx); | |
749 | ||
0f461727 | 750 | return ctx->u.rinfo.zd_old_metric; |
01ce7cba MS |
751 | } |
752 | ||
25779064 | 753 | uint32_t dplane_ctx_get_mtu(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
754 | { |
755 | DPLANE_CTX_VALID(ctx); | |
756 | ||
0f461727 | 757 | return ctx->u.rinfo.zd_mtu; |
7cdb1a84 MS |
758 | } |
759 | ||
25779064 | 760 | uint32_t dplane_ctx_get_nh_mtu(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
761 | { |
762 | DPLANE_CTX_VALID(ctx); | |
763 | ||
0f461727 | 764 | return ctx->u.rinfo.zd_nexthop_mtu; |
7cdb1a84 MS |
765 | } |
766 | ||
25779064 | 767 | uint8_t dplane_ctx_get_distance(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
768 | { |
769 | DPLANE_CTX_VALID(ctx); | |
770 | ||
0f461727 | 771 | return ctx->u.rinfo.zd_distance; |
7cdb1a84 MS |
772 | } |
773 | ||
25779064 | 774 | uint8_t dplane_ctx_get_old_distance(const struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
775 | { |
776 | DPLANE_CTX_VALID(ctx); | |
777 | ||
0f461727 | 778 | return ctx->u.rinfo.zd_old_distance; |
7cdb1a84 MS |
779 | } |
780 | ||
25779064 MS |
781 | const struct nexthop_group *dplane_ctx_get_ng( |
782 | const struct zebra_dplane_ctx *ctx) | |
7cdb1a84 MS |
783 | { |
784 | DPLANE_CTX_VALID(ctx); | |
785 | ||
0f461727 | 786 | return &(ctx->u.rinfo.zd_ng); |
7cdb1a84 MS |
787 | } |
788 | ||
25779064 MS |
789 | const struct nexthop_group *dplane_ctx_get_old_ng( |
790 | const struct zebra_dplane_ctx *ctx) | |
01ce7cba MS |
791 | { |
792 | DPLANE_CTX_VALID(ctx); | |
793 | ||
0f461727 | 794 | return &(ctx->u.rinfo.zd_old_ng); |
01ce7cba MS |
795 | } |
796 | ||
25779064 MS |
797 | const struct zebra_dplane_info *dplane_ctx_get_ns( |
798 | const struct zebra_dplane_ctx *ctx) | |
7cdb1a84 MS |
799 | { |
800 | DPLANE_CTX_VALID(ctx); | |
801 | ||
5709131c | 802 | return &(ctx->zd_ns_info); |
7cdb1a84 MS |
803 | } |
804 | ||
0f461727 MS |
805 | /* Accessors for LSP information */ |
806 | ||
807 | mpls_label_t dplane_ctx_get_in_label(const struct zebra_dplane_ctx *ctx) | |
808 | { | |
809 | DPLANE_CTX_VALID(ctx); | |
810 | ||
811 | return ctx->u.lsp.ile.in_label; | |
812 | } | |
813 | ||
814 | uint8_t dplane_ctx_get_addr_family(const struct zebra_dplane_ctx *ctx) | |
815 | { | |
816 | DPLANE_CTX_VALID(ctx); | |
817 | ||
818 | return ctx->u.lsp.addr_family; | |
819 | } | |
820 | ||
821 | uint32_t dplane_ctx_get_lsp_flags(const struct zebra_dplane_ctx *ctx) | |
822 | { | |
823 | DPLANE_CTX_VALID(ctx); | |
824 | ||
825 | return ctx->u.lsp.flags; | |
826 | } | |
827 | ||
81793ac1 | 828 | const zebra_nhlfe_t *dplane_ctx_get_nhlfe(const struct zebra_dplane_ctx *ctx) |
0f461727 MS |
829 | { |
830 | DPLANE_CTX_VALID(ctx); | |
831 | ||
832 | return ctx->u.lsp.nhlfe_list; | |
833 | } | |
834 | ||
81793ac1 MS |
835 | const zebra_nhlfe_t * |
836 | dplane_ctx_get_best_nhlfe(const struct zebra_dplane_ctx *ctx) | |
0f461727 MS |
837 | { |
838 | DPLANE_CTX_VALID(ctx); | |
839 | ||
840 | return ctx->u.lsp.best_nhlfe; | |
841 | } | |
842 | ||
843 | uint32_t dplane_ctx_get_lsp_num_ecmp(const struct zebra_dplane_ctx *ctx) | |
844 | { | |
845 | DPLANE_CTX_VALID(ctx); | |
846 | ||
847 | return ctx->u.lsp.num_ecmp; | |
848 | } | |
849 | ||
d613b8e1 MS |
850 | const char *dplane_ctx_get_pw_ifname(const struct zebra_dplane_ctx *ctx) |
851 | { | |
852 | DPLANE_CTX_VALID(ctx); | |
853 | ||
854 | return ctx->u.pw.ifname; | |
855 | } | |
856 | ||
857 | mpls_label_t dplane_ctx_get_pw_local_label(const struct zebra_dplane_ctx *ctx) | |
858 | { | |
859 | DPLANE_CTX_VALID(ctx); | |
860 | ||
861 | return ctx->u.pw.local_label; | |
862 | } | |
863 | ||
864 | mpls_label_t dplane_ctx_get_pw_remote_label(const struct zebra_dplane_ctx *ctx) | |
865 | { | |
866 | DPLANE_CTX_VALID(ctx); | |
867 | ||
868 | return ctx->u.pw.remote_label; | |
869 | } | |
870 | ||
871 | int dplane_ctx_get_pw_type(const struct zebra_dplane_ctx *ctx) | |
872 | { | |
873 | DPLANE_CTX_VALID(ctx); | |
874 | ||
875 | return ctx->u.pw.type; | |
876 | } | |
877 | ||
878 | int dplane_ctx_get_pw_af(const struct zebra_dplane_ctx *ctx) | |
879 | { | |
880 | DPLANE_CTX_VALID(ctx); | |
881 | ||
882 | return ctx->u.pw.af; | |
883 | } | |
884 | ||
885 | uint32_t dplane_ctx_get_pw_flags(const struct zebra_dplane_ctx *ctx) | |
886 | { | |
887 | DPLANE_CTX_VALID(ctx); | |
888 | ||
889 | return ctx->u.pw.flags; | |
890 | } | |
891 | ||
892 | int dplane_ctx_get_pw_status(const struct zebra_dplane_ctx *ctx) | |
893 | { | |
894 | DPLANE_CTX_VALID(ctx); | |
895 | ||
896 | return ctx->u.pw.status; | |
897 | } | |
898 | ||
16d69787 | 899 | const union g_addr *dplane_ctx_get_pw_dest( |
d613b8e1 MS |
900 | const struct zebra_dplane_ctx *ctx) |
901 | { | |
902 | DPLANE_CTX_VALID(ctx); | |
903 | ||
16d69787 | 904 | return &(ctx->u.pw.dest); |
d613b8e1 MS |
905 | } |
906 | ||
907 | const union pw_protocol_fields *dplane_ctx_get_pw_proto( | |
908 | const struct zebra_dplane_ctx *ctx) | |
909 | { | |
910 | DPLANE_CTX_VALID(ctx); | |
911 | ||
912 | return &(ctx->u.pw.fields); | |
913 | } | |
914 | ||
09cd307c MS |
915 | const struct nexthop_group * |
916 | dplane_ctx_get_pw_nhg(const struct zebra_dplane_ctx *ctx) | |
917 | { | |
918 | DPLANE_CTX_VALID(ctx); | |
919 | ||
920 | return &(ctx->u.pw.nhg); | |
921 | } | |
922 | ||
a4a4802a MS |
923 | /* Accessors for interface information */ |
924 | const char *dplane_ctx_get_ifname(const struct zebra_dplane_ctx *ctx) | |
925 | { | |
926 | DPLANE_CTX_VALID(ctx); | |
927 | ||
928 | return ctx->u.intf.ifname; | |
929 | } | |
930 | ||
931 | ifindex_t dplane_ctx_get_ifindex(const struct zebra_dplane_ctx *ctx) | |
932 | { | |
933 | DPLANE_CTX_VALID(ctx); | |
934 | ||
935 | return ctx->u.intf.ifindex; | |
936 | } | |
937 | ||
938 | uint32_t dplane_ctx_get_intf_metric(const struct zebra_dplane_ctx *ctx) | |
939 | { | |
940 | DPLANE_CTX_VALID(ctx); | |
941 | ||
942 | return ctx->u.intf.metric; | |
943 | } | |
944 | ||
945 | /* Is interface addr p2p? */ | |
946 | bool dplane_ctx_intf_is_connected(const struct zebra_dplane_ctx *ctx) | |
947 | { | |
948 | DPLANE_CTX_VALID(ctx); | |
949 | ||
950 | return (ctx->u.intf.flags & DPLANE_INTF_CONNECTED); | |
951 | } | |
952 | ||
953 | bool dplane_ctx_intf_is_secondary(const struct zebra_dplane_ctx *ctx) | |
954 | { | |
955 | DPLANE_CTX_VALID(ctx); | |
956 | ||
957 | return (ctx->u.intf.flags & DPLANE_INTF_SECONDARY); | |
958 | } | |
959 | ||
64168803 MS |
960 | bool dplane_ctx_intf_is_broadcast(const struct zebra_dplane_ctx *ctx) |
961 | { | |
962 | DPLANE_CTX_VALID(ctx); | |
963 | ||
964 | return (ctx->u.intf.flags & DPLANE_INTF_BROADCAST); | |
965 | } | |
966 | ||
a4a4802a MS |
967 | const struct prefix *dplane_ctx_get_intf_addr( |
968 | const struct zebra_dplane_ctx *ctx) | |
969 | { | |
970 | DPLANE_CTX_VALID(ctx); | |
971 | ||
972 | return &(ctx->u.intf.prefix); | |
973 | } | |
974 | ||
975 | bool dplane_ctx_intf_has_dest(const struct zebra_dplane_ctx *ctx) | |
976 | { | |
977 | DPLANE_CTX_VALID(ctx); | |
978 | ||
979 | return (ctx->u.intf.flags & DPLANE_INTF_HAS_DEST); | |
980 | } | |
981 | ||
982 | const struct prefix *dplane_ctx_get_intf_dest( | |
983 | const struct zebra_dplane_ctx *ctx) | |
984 | { | |
985 | DPLANE_CTX_VALID(ctx); | |
986 | ||
987 | if (ctx->u.intf.flags & DPLANE_INTF_HAS_DEST) | |
988 | return &(ctx->u.intf.dest_prefix); | |
989 | else | |
990 | return NULL; | |
991 | } | |
992 | ||
993 | bool dplane_ctx_intf_has_label(const struct zebra_dplane_ctx *ctx) | |
994 | { | |
995 | DPLANE_CTX_VALID(ctx); | |
996 | ||
997 | return (ctx->u.intf.flags & DPLANE_INTF_HAS_LABEL); | |
998 | } | |
999 | ||
1000 | const char *dplane_ctx_get_intf_label(const struct zebra_dplane_ctx *ctx) | |
1001 | { | |
1002 | DPLANE_CTX_VALID(ctx); | |
1003 | ||
1004 | return ctx->u.intf.label; | |
1005 | } | |
1006 | ||
7cdb1a84 MS |
1007 | /* |
1008 | * End of dplane context accessors | |
1009 | */ | |
1010 | ||
c831033f | 1011 | |
91f16812 MS |
1012 | /* |
1013 | * Retrieve the limit on the number of pending, unprocessed updates. | |
1014 | */ | |
1015 | uint32_t dplane_get_in_queue_limit(void) | |
1016 | { | |
1017 | return atomic_load_explicit(&zdplane_info.dg_max_queued_updates, | |
1018 | memory_order_relaxed); | |
1019 | } | |
1020 | ||
1021 | /* | |
1022 | * Configure limit on the number of pending, queued updates. | |
1023 | */ | |
1024 | void dplane_set_in_queue_limit(uint32_t limit, bool set) | |
1025 | { | |
1026 | /* Reset to default on 'unset' */ | |
1027 | if (!set) | |
1028 | limit = DPLANE_DEFAULT_MAX_QUEUED; | |
1029 | ||
1030 | atomic_store_explicit(&zdplane_info.dg_max_queued_updates, limit, | |
1031 | memory_order_relaxed); | |
1032 | } | |
1033 | ||
1034 | /* | |
1035 | * Retrieve the current queue depth of incoming, unprocessed updates | |
1036 | */ | |
1037 | uint32_t dplane_get_in_queue_len(void) | |
1038 | { | |
1039 | return atomic_load_explicit(&zdplane_info.dg_routes_queued, | |
1040 | memory_order_seq_cst); | |
1041 | } | |
1042 | ||
16c628de MS |
1043 | /* |
1044 | * Common dataplane context init with zebra namespace info. | |
1045 | */ | |
1046 | static int dplane_ctx_ns_init(struct zebra_dplane_ctx *ctx, | |
1047 | struct zebra_ns *zns, | |
1048 | bool is_update) | |
1049 | { | |
1050 | dplane_info_from_zns(&(ctx->zd_ns_info), zns); | |
1051 | ||
1052 | #if defined(HAVE_NETLINK) | |
1053 | /* Increment message counter after copying to context struct - may need | |
1054 | * two messages in some 'update' cases. | |
1055 | */ | |
1056 | if (is_update) | |
1057 | zns->netlink_dplane.seq += 2; | |
1058 | else | |
1059 | zns->netlink_dplane.seq++; | |
1060 | #endif /* HAVE_NETLINK */ | |
1061 | ||
1062 | return AOK; | |
1063 | } | |
1064 | ||
7cdb1a84 MS |
1065 | /* |
1066 | * Initialize a context block for a route update from zebra data structs. | |
1067 | */ | |
25779064 | 1068 | static int dplane_ctx_route_init(struct zebra_dplane_ctx *ctx, |
5709131c | 1069 | enum dplane_op_e op, |
7cdb1a84 MS |
1070 | struct route_node *rn, |
1071 | struct route_entry *re) | |
1072 | { | |
1073 | int ret = EINVAL; | |
1074 | const struct route_table *table = NULL; | |
1075 | const rib_table_info_t *info; | |
1076 | const struct prefix *p, *src_p; | |
1077 | struct zebra_ns *zns; | |
1078 | struct zebra_vrf *zvrf; | |
f183e380 | 1079 | struct nexthop *nexthop; |
7cdb1a84 | 1080 | |
5709131c | 1081 | if (!ctx || !rn || !re) |
7cdb1a84 | 1082 | goto done; |
7cdb1a84 MS |
1083 | |
1084 | ctx->zd_op = op; | |
14b0bc8e | 1085 | ctx->zd_status = ZEBRA_DPLANE_REQUEST_SUCCESS; |
7cdb1a84 | 1086 | |
0f461727 MS |
1087 | ctx->u.rinfo.zd_type = re->type; |
1088 | ctx->u.rinfo.zd_old_type = re->type; | |
7cdb1a84 MS |
1089 | |
1090 | /* Prefixes: dest, and optional source */ | |
1091 | srcdest_rnode_prefixes(rn, &p, &src_p); | |
1092 | ||
0f461727 | 1093 | prefix_copy(&(ctx->u.rinfo.zd_dest), p); |
7cdb1a84 | 1094 | |
5709131c | 1095 | if (src_p) |
0f461727 | 1096 | prefix_copy(&(ctx->u.rinfo.zd_src), src_p); |
5709131c | 1097 | else |
0f461727 | 1098 | memset(&(ctx->u.rinfo.zd_src), 0, sizeof(ctx->u.rinfo.zd_src)); |
7cdb1a84 MS |
1099 | |
1100 | ctx->zd_table_id = re->table; | |
1101 | ||
0f461727 MS |
1102 | ctx->u.rinfo.zd_metric = re->metric; |
1103 | ctx->u.rinfo.zd_old_metric = re->metric; | |
7cdb1a84 | 1104 | ctx->zd_vrf_id = re->vrf_id; |
0f461727 MS |
1105 | ctx->u.rinfo.zd_mtu = re->mtu; |
1106 | ctx->u.rinfo.zd_nexthop_mtu = re->nexthop_mtu; | |
1107 | ctx->u.rinfo.zd_instance = re->instance; | |
1108 | ctx->u.rinfo.zd_tag = re->tag; | |
1109 | ctx->u.rinfo.zd_old_tag = re->tag; | |
1110 | ctx->u.rinfo.zd_distance = re->distance; | |
7cdb1a84 MS |
1111 | |
1112 | table = srcdest_rnode_table(rn); | |
1113 | info = table->info; | |
1114 | ||
0f461727 MS |
1115 | ctx->u.rinfo.zd_afi = info->afi; |
1116 | ctx->u.rinfo.zd_safi = info->safi; | |
7cdb1a84 | 1117 | |
7cdb1a84 | 1118 | /* Copy nexthops; recursive info is included too */ |
0f461727 | 1119 | copy_nexthops(&(ctx->u.rinfo.zd_ng.nexthop), re->ng.nexthop, NULL); |
7cdb1a84 | 1120 | |
14b0bc8e | 1121 | /* Ensure that the dplane's nexthops flags are clear. */ |
0f461727 | 1122 | for (ALL_NEXTHOPS(ctx->u.rinfo.zd_ng, nexthop)) |
f183e380 | 1123 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
f183e380 | 1124 | |
cf363e1b MS |
1125 | /* Don't need some info when capturing a system notification */ |
1126 | if (op == DPLANE_OP_SYS_ROUTE_ADD || | |
1127 | op == DPLANE_OP_SYS_ROUTE_DELETE) { | |
1128 | ret = AOK; | |
1129 | goto done; | |
1130 | } | |
1131 | ||
1132 | /* Extract ns info - can't use pointers to 'core' structs */ | |
1133 | zvrf = vrf_info_lookup(re->vrf_id); | |
1134 | zns = zvrf->zns; | |
1135 | dplane_ctx_ns_init(ctx, zns, (op == DPLANE_OP_ROUTE_UPDATE)); | |
1136 | ||
7cdb1a84 MS |
1137 | /* Trying out the sequence number idea, so we can try to detect |
1138 | * when a result is stale. | |
1139 | */ | |
1485bbe7 | 1140 | re->dplane_sequence = zebra_router_get_next_sequence(); |
7cdb1a84 MS |
1141 | ctx->zd_seq = re->dplane_sequence; |
1142 | ||
1143 | ret = AOK; | |
1144 | ||
1145 | done: | |
1146 | return ret; | |
1147 | } | |
1148 | ||
16c628de MS |
1149 | /* |
1150 | * Capture information for an LSP update in a dplane context. | |
1151 | */ | |
1152 | static int dplane_ctx_lsp_init(struct zebra_dplane_ctx *ctx, | |
1153 | enum dplane_op_e op, | |
1154 | zebra_lsp_t *lsp) | |
1155 | { | |
1156 | int ret = AOK; | |
1157 | zebra_nhlfe_t *nhlfe, *new_nhlfe; | |
1158 | ||
1159 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1160 | zlog_debug("init dplane ctx %s: in-label %u ecmp# %d", | |
1161 | dplane_op2str(op), lsp->ile.in_label, | |
1162 | lsp->num_ecmp); | |
1163 | ||
1164 | ctx->zd_op = op; | |
1165 | ctx->zd_status = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
1166 | ||
1167 | /* Capture namespace info */ | |
1168 | dplane_ctx_ns_init(ctx, zebra_ns_lookup(NS_DEFAULT), | |
1169 | (op == DPLANE_OP_LSP_UPDATE)); | |
1170 | ||
1171 | memset(&ctx->u.lsp, 0, sizeof(ctx->u.lsp)); | |
1172 | ||
1173 | ctx->u.lsp.ile = lsp->ile; | |
1174 | ctx->u.lsp.addr_family = lsp->addr_family; | |
1175 | ctx->u.lsp.num_ecmp = lsp->num_ecmp; | |
1176 | ctx->u.lsp.flags = lsp->flags; | |
1177 | ||
1178 | /* Copy source LSP's nhlfes, and capture 'best' nhlfe */ | |
1179 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
1180 | /* Not sure if this is meaningful... */ | |
1181 | if (nhlfe->nexthop == NULL) | |
1182 | continue; | |
1183 | ||
1184 | new_nhlfe = | |
1185 | zebra_mpls_lsp_add_nhlfe( | |
1186 | &(ctx->u.lsp), | |
1187 | nhlfe->type, | |
1188 | nhlfe->nexthop->type, | |
1189 | &(nhlfe->nexthop->gate), | |
1190 | nhlfe->nexthop->ifindex, | |
1191 | nhlfe->nexthop->nh_label->label[0]); | |
1192 | ||
1193 | if (new_nhlfe == NULL || new_nhlfe->nexthop == NULL) { | |
1194 | ret = ENOMEM; | |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | /* Need to copy flags too */ | |
1199 | new_nhlfe->flags = nhlfe->flags; | |
1200 | new_nhlfe->nexthop->flags = nhlfe->nexthop->flags; | |
1201 | ||
1202 | if (nhlfe == lsp->best_nhlfe) | |
1203 | ctx->u.lsp.best_nhlfe = new_nhlfe; | |
1204 | } | |
1205 | ||
1206 | /* On error the ctx will be cleaned-up, so we don't need to | |
1207 | * deal with any allocated nhlfe or nexthop structs here. | |
1208 | */ | |
1209 | ||
1210 | return ret; | |
1211 | } | |
1212 | ||
97d8d05a MS |
1213 | /* |
1214 | * Capture information for an LSP update in a dplane context. | |
1215 | */ | |
1216 | static int dplane_ctx_pw_init(struct zebra_dplane_ctx *ctx, | |
1217 | enum dplane_op_e op, | |
1218 | struct zebra_pw *pw) | |
1219 | { | |
09cd307c MS |
1220 | struct prefix p; |
1221 | afi_t afi; | |
1222 | struct route_table *table; | |
1223 | struct route_node *rn; | |
1224 | struct route_entry *re; | |
1225 | ||
97d8d05a MS |
1226 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
1227 | zlog_debug("init dplane ctx %s: pw '%s', loc %u, rem %u", | |
1228 | dplane_op2str(op), pw->ifname, pw->local_label, | |
1229 | pw->remote_label); | |
1230 | ||
1231 | ctx->zd_op = op; | |
1232 | ctx->zd_status = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
1233 | ||
1234 | /* Capture namespace info: no netlink support as of 12/18, | |
1235 | * but just in case... | |
1236 | */ | |
1237 | dplane_ctx_ns_init(ctx, zebra_ns_lookup(NS_DEFAULT), false); | |
1238 | ||
1239 | memset(&ctx->u.pw, 0, sizeof(ctx->u.pw)); | |
1240 | ||
1241 | /* This name appears to be c-string, so we use string copy. */ | |
1242 | strlcpy(ctx->u.pw.ifname, pw->ifname, sizeof(ctx->u.pw.ifname)); | |
16d69787 | 1243 | |
9bd9717b | 1244 | ctx->zd_vrf_id = pw->vrf_id; |
97d8d05a MS |
1245 | ctx->u.pw.ifindex = pw->ifindex; |
1246 | ctx->u.pw.type = pw->type; | |
1247 | ctx->u.pw.af = pw->af; | |
1248 | ctx->u.pw.local_label = pw->local_label; | |
1249 | ctx->u.pw.remote_label = pw->remote_label; | |
1250 | ctx->u.pw.flags = pw->flags; | |
1251 | ||
16d69787 | 1252 | ctx->u.pw.dest = pw->nexthop; |
97d8d05a MS |
1253 | |
1254 | ctx->u.pw.fields = pw->data; | |
1255 | ||
09cd307c MS |
1256 | /* Capture nexthop info for the pw destination. We need to look |
1257 | * up and use zebra datastructs, but we're running in the zebra | |
1258 | * pthread here so that should be ok. | |
1259 | */ | |
1260 | memcpy(&p.u, &pw->nexthop, sizeof(pw->nexthop)); | |
1261 | p.family = pw->af; | |
1262 | p.prefixlen = ((pw->af == AF_INET) ? | |
1263 | IPV4_MAX_PREFIXLEN : IPV6_MAX_PREFIXLEN); | |
1264 | ||
1265 | afi = (pw->af == AF_INET) ? AFI_IP : AFI_IP6; | |
1266 | table = zebra_vrf_table(afi, SAFI_UNICAST, pw->vrf_id); | |
1267 | if (table) { | |
1268 | rn = route_node_match(table, &p); | |
1269 | if (rn) { | |
1270 | RNODE_FOREACH_RE(rn, re) { | |
1271 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) | |
1272 | break; | |
1273 | } | |
1274 | ||
1275 | if (re) | |
1276 | copy_nexthops(&(ctx->u.pw.nhg.nexthop), | |
1277 | re->ng.nexthop, NULL); | |
1278 | ||
1279 | route_unlock_node(rn); | |
1280 | } | |
1281 | } | |
1282 | ||
9f2d0354 | 1283 | return AOK; |
97d8d05a MS |
1284 | } |
1285 | ||
7cdb1a84 MS |
1286 | /* |
1287 | * Enqueue a new route update, | |
16c628de | 1288 | * and ensure an event is active for the dataplane pthread. |
7cdb1a84 | 1289 | */ |
25779064 | 1290 | static int dplane_route_enqueue(struct zebra_dplane_ctx *ctx) |
7cdb1a84 MS |
1291 | { |
1292 | int ret = EINVAL; | |
91f16812 | 1293 | uint32_t high, curr; |
7cdb1a84 | 1294 | |
16c628de | 1295 | /* Enqueue for processing by the dataplane pthread */ |
7cdb1a84 MS |
1296 | DPLANE_LOCK(); |
1297 | { | |
25779064 MS |
1298 | TAILQ_INSERT_TAIL(&zdplane_info.dg_route_ctx_q, ctx, |
1299 | zd_q_entries); | |
7cdb1a84 MS |
1300 | } |
1301 | DPLANE_UNLOCK(); | |
1302 | ||
e07e9549 MS |
1303 | curr = atomic_add_fetch_explicit( |
1304 | #ifdef __clang__ | |
1305 | /* TODO -- issue with the clang atomic/intrinsics currently; | |
1306 | * casting away the 'Atomic'-ness of the variable works. | |
1307 | */ | |
1308 | (uint32_t *)&(zdplane_info.dg_routes_queued), | |
1309 | #else | |
1310 | &(zdplane_info.dg_routes_queued), | |
1311 | #endif | |
1312 | 1, memory_order_seq_cst); | |
91f16812 MS |
1313 | |
1314 | /* Maybe update high-water counter also */ | |
1315 | high = atomic_load_explicit(&zdplane_info.dg_routes_queued_max, | |
1316 | memory_order_seq_cst); | |
1317 | while (high < curr) { | |
1318 | if (atomic_compare_exchange_weak_explicit( | |
1319 | &zdplane_info.dg_routes_queued_max, | |
1320 | &high, curr, | |
1321 | memory_order_seq_cst, | |
1322 | memory_order_seq_cst)) | |
1323 | break; | |
1324 | } | |
1325 | ||
7cdb1a84 | 1326 | /* Ensure that an event for the dataplane thread is active */ |
c831033f | 1327 | ret = dplane_provider_work_ready(); |
7cdb1a84 | 1328 | |
5709131c | 1329 | return ret; |
7cdb1a84 MS |
1330 | } |
1331 | ||
7cdb1a84 MS |
1332 | /* |
1333 | * Utility that prepares a route update and enqueues it for processing | |
1334 | */ | |
655d681a MS |
1335 | static enum zebra_dplane_result |
1336 | dplane_route_update_internal(struct route_node *rn, | |
1337 | struct route_entry *re, | |
1338 | struct route_entry *old_re, | |
5709131c | 1339 | enum dplane_op_e op) |
7cdb1a84 | 1340 | { |
655d681a | 1341 | enum zebra_dplane_result result = ZEBRA_DPLANE_REQUEST_FAILURE; |
7cdb1a84 | 1342 | int ret = EINVAL; |
25779064 | 1343 | struct zebra_dplane_ctx *ctx = NULL; |
7cdb1a84 MS |
1344 | |
1345 | /* Obtain context block */ | |
1346 | ctx = dplane_ctx_alloc(); | |
7cdb1a84 MS |
1347 | |
1348 | /* Init context with info from zebra data structs */ | |
1349 | ret = dplane_ctx_route_init(ctx, op, rn, re); | |
1350 | if (ret == AOK) { | |
1351 | /* Capture some extra info for update case | |
1352 | * where there's a different 'old' route. | |
1353 | */ | |
b8e0423d MS |
1354 | if ((op == DPLANE_OP_ROUTE_UPDATE) && |
1355 | old_re && (old_re != re)) { | |
7cdb1a84 MS |
1356 | ctx->zd_is_update = true; |
1357 | ||
1485bbe7 DS |
1358 | old_re->dplane_sequence = |
1359 | zebra_router_get_next_sequence(); | |
7cdb1a84 MS |
1360 | ctx->zd_old_seq = old_re->dplane_sequence; |
1361 | ||
0f461727 MS |
1362 | ctx->u.rinfo.zd_old_tag = old_re->tag; |
1363 | ctx->u.rinfo.zd_old_type = old_re->type; | |
1364 | ctx->u.rinfo.zd_old_instance = old_re->instance; | |
1365 | ctx->u.rinfo.zd_old_distance = old_re->distance; | |
1366 | ctx->u.rinfo.zd_old_metric = old_re->metric; | |
01ce7cba MS |
1367 | |
1368 | #ifndef HAVE_NETLINK | |
f183e380 MS |
1369 | /* For bsd, capture previous re's nexthops too, sigh. |
1370 | * We'll need these to do per-nexthop deletes. | |
1371 | */ | |
0f461727 | 1372 | copy_nexthops(&(ctx->u.rinfo.zd_old_ng.nexthop), |
01ce7cba MS |
1373 | old_re->ng.nexthop, NULL); |
1374 | #endif /* !HAVE_NETLINK */ | |
7cdb1a84 MS |
1375 | } |
1376 | ||
1377 | /* Enqueue context for processing */ | |
1378 | ret = dplane_route_enqueue(ctx); | |
1379 | } | |
1380 | ||
91f16812 | 1381 | /* Update counter */ |
25779064 | 1382 | atomic_fetch_add_explicit(&zdplane_info.dg_routes_in, 1, |
1d11b21f MS |
1383 | memory_order_relaxed); |
1384 | ||
91f16812 | 1385 | if (ret == AOK) |
655d681a | 1386 | result = ZEBRA_DPLANE_REQUEST_QUEUED; |
16c628de | 1387 | else { |
25779064 | 1388 | atomic_fetch_add_explicit(&zdplane_info.dg_route_errors, 1, |
1d11b21f | 1389 | memory_order_relaxed); |
16c628de MS |
1390 | if (ctx) |
1391 | dplane_ctx_free(&ctx); | |
1d11b21f | 1392 | } |
7cdb1a84 | 1393 | |
5709131c | 1394 | return result; |
7cdb1a84 MS |
1395 | } |
1396 | ||
1397 | /* | |
1398 | * Enqueue a route 'add' for the dataplane. | |
1399 | */ | |
655d681a MS |
1400 | enum zebra_dplane_result dplane_route_add(struct route_node *rn, |
1401 | struct route_entry *re) | |
7cdb1a84 | 1402 | { |
655d681a | 1403 | enum zebra_dplane_result ret = ZEBRA_DPLANE_REQUEST_FAILURE; |
7cdb1a84 | 1404 | |
5709131c | 1405 | if (rn == NULL || re == NULL) |
7cdb1a84 | 1406 | goto done; |
7cdb1a84 MS |
1407 | |
1408 | ret = dplane_route_update_internal(rn, re, NULL, | |
1409 | DPLANE_OP_ROUTE_INSTALL); | |
1410 | ||
1411 | done: | |
5709131c | 1412 | return ret; |
7cdb1a84 MS |
1413 | } |
1414 | ||
1415 | /* | |
1416 | * Enqueue a route update for the dataplane. | |
1417 | */ | |
655d681a MS |
1418 | enum zebra_dplane_result dplane_route_update(struct route_node *rn, |
1419 | struct route_entry *re, | |
1420 | struct route_entry *old_re) | |
7cdb1a84 | 1421 | { |
655d681a | 1422 | enum zebra_dplane_result ret = ZEBRA_DPLANE_REQUEST_FAILURE; |
7cdb1a84 | 1423 | |
5709131c | 1424 | if (rn == NULL || re == NULL) |
7cdb1a84 | 1425 | goto done; |
7cdb1a84 MS |
1426 | |
1427 | ret = dplane_route_update_internal(rn, re, old_re, | |
1428 | DPLANE_OP_ROUTE_UPDATE); | |
7cdb1a84 | 1429 | done: |
5709131c | 1430 | return ret; |
7cdb1a84 MS |
1431 | } |
1432 | ||
1433 | /* | |
1434 | * Enqueue a route removal for the dataplane. | |
1435 | */ | |
655d681a MS |
1436 | enum zebra_dplane_result dplane_route_delete(struct route_node *rn, |
1437 | struct route_entry *re) | |
7cdb1a84 | 1438 | { |
655d681a | 1439 | enum zebra_dplane_result ret = ZEBRA_DPLANE_REQUEST_FAILURE; |
7cdb1a84 | 1440 | |
5709131c | 1441 | if (rn == NULL || re == NULL) |
7cdb1a84 | 1442 | goto done; |
7cdb1a84 MS |
1443 | |
1444 | ret = dplane_route_update_internal(rn, re, NULL, | |
1445 | DPLANE_OP_ROUTE_DELETE); | |
1446 | ||
1447 | done: | |
5709131c | 1448 | return ret; |
7cdb1a84 MS |
1449 | } |
1450 | ||
cf363e1b MS |
1451 | /* |
1452 | * Notify the dplane when system/connected routes change. | |
1453 | */ | |
1454 | enum zebra_dplane_result dplane_sys_route_add(struct route_node *rn, | |
1455 | struct route_entry *re) | |
1456 | { | |
1457 | enum zebra_dplane_result ret = ZEBRA_DPLANE_REQUEST_FAILURE; | |
1458 | ||
1459 | /* Ignore this event unless a provider plugin has requested it. */ | |
1460 | if (!zdplane_info.dg_sys_route_notifs) { | |
1461 | ret = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
1462 | goto done; | |
1463 | } | |
1464 | ||
1465 | if (rn == NULL || re == NULL) | |
1466 | goto done; | |
1467 | ||
1468 | ret = dplane_route_update_internal(rn, re, NULL, | |
1469 | DPLANE_OP_SYS_ROUTE_ADD); | |
1470 | ||
1471 | done: | |
1472 | return ret; | |
1473 | } | |
1474 | ||
1475 | /* | |
1476 | * Notify the dplane when system/connected routes are deleted. | |
1477 | */ | |
1478 | enum zebra_dplane_result dplane_sys_route_del(struct route_node *rn, | |
1479 | struct route_entry *re) | |
1480 | { | |
1481 | enum zebra_dplane_result ret = ZEBRA_DPLANE_REQUEST_FAILURE; | |
1482 | ||
1483 | /* Ignore this event unless a provider plugin has requested it. */ | |
1484 | if (!zdplane_info.dg_sys_route_notifs) { | |
1485 | ret = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
1486 | goto done; | |
1487 | } | |
1488 | ||
1489 | if (rn == NULL || re == NULL) | |
1490 | goto done; | |
1491 | ||
1492 | ret = dplane_route_update_internal(rn, re, NULL, | |
1493 | DPLANE_OP_SYS_ROUTE_DELETE); | |
1494 | ||
1495 | done: | |
1496 | return ret; | |
1497 | } | |
1498 | ||
16c628de MS |
1499 | /* |
1500 | * Enqueue LSP add for the dataplane. | |
1501 | */ | |
1502 | enum zebra_dplane_result dplane_lsp_add(zebra_lsp_t *lsp) | |
1503 | { | |
1504 | enum zebra_dplane_result ret = | |
1505 | lsp_update_internal(lsp, DPLANE_OP_LSP_INSTALL); | |
1506 | ||
1507 | return ret; | |
1508 | } | |
1509 | ||
1510 | /* | |
1511 | * Enqueue LSP update for the dataplane. | |
1512 | */ | |
1513 | enum zebra_dplane_result dplane_lsp_update(zebra_lsp_t *lsp) | |
1514 | { | |
1515 | enum zebra_dplane_result ret = | |
1516 | lsp_update_internal(lsp, DPLANE_OP_LSP_UPDATE); | |
1517 | ||
1518 | return ret; | |
1519 | } | |
1520 | ||
1521 | /* | |
1522 | * Enqueue LSP delete for the dataplane. | |
1523 | */ | |
1524 | enum zebra_dplane_result dplane_lsp_delete(zebra_lsp_t *lsp) | |
1525 | { | |
1526 | enum zebra_dplane_result ret = | |
1527 | lsp_update_internal(lsp, DPLANE_OP_LSP_DELETE); | |
1528 | ||
1529 | return ret; | |
1530 | } | |
1531 | ||
97d8d05a MS |
1532 | /* |
1533 | * Enqueue pseudowire install for the dataplane. | |
1534 | */ | |
1535 | enum zebra_dplane_result dplane_pw_install(struct zebra_pw *pw) | |
1536 | { | |
1537 | return pw_update_internal(pw, DPLANE_OP_PW_INSTALL); | |
1538 | } | |
1539 | ||
1540 | /* | |
1541 | * Enqueue pseudowire un-install for the dataplane. | |
1542 | */ | |
1543 | enum zebra_dplane_result dplane_pw_uninstall(struct zebra_pw *pw) | |
1544 | { | |
1545 | return pw_update_internal(pw, DPLANE_OP_PW_UNINSTALL); | |
1546 | } | |
1547 | ||
16c628de MS |
1548 | /* |
1549 | * Common internal LSP update utility | |
1550 | */ | |
1551 | static enum zebra_dplane_result lsp_update_internal(zebra_lsp_t *lsp, | |
1552 | enum dplane_op_e op) | |
1553 | { | |
1554 | enum zebra_dplane_result result = ZEBRA_DPLANE_REQUEST_FAILURE; | |
1555 | int ret = EINVAL; | |
1556 | struct zebra_dplane_ctx *ctx = NULL; | |
1557 | ||
1558 | /* Obtain context block */ | |
1559 | ctx = dplane_ctx_alloc(); | |
16c628de MS |
1560 | |
1561 | ret = dplane_ctx_lsp_init(ctx, op, lsp); | |
1562 | if (ret != AOK) | |
1563 | goto done; | |
1564 | ||
1565 | ret = dplane_route_enqueue(ctx); | |
1566 | ||
1567 | done: | |
1568 | /* Update counter */ | |
1569 | atomic_fetch_add_explicit(&zdplane_info.dg_lsps_in, 1, | |
1570 | memory_order_relaxed); | |
1571 | ||
1572 | if (ret == AOK) | |
1573 | result = ZEBRA_DPLANE_REQUEST_QUEUED; | |
1574 | else { | |
1575 | atomic_fetch_add_explicit(&zdplane_info.dg_lsp_errors, 1, | |
1576 | memory_order_relaxed); | |
1577 | if (ctx) | |
1578 | dplane_ctx_free(&ctx); | |
1579 | } | |
1580 | ||
1581 | return result; | |
1582 | } | |
1583 | ||
97d8d05a MS |
1584 | /* |
1585 | * Internal, common handler for pseudowire updates. | |
1586 | */ | |
1587 | static enum zebra_dplane_result pw_update_internal(struct zebra_pw *pw, | |
1588 | enum dplane_op_e op) | |
1589 | { | |
1590 | enum zebra_dplane_result result = ZEBRA_DPLANE_REQUEST_FAILURE; | |
1591 | int ret; | |
1592 | struct zebra_dplane_ctx *ctx = NULL; | |
1593 | ||
1594 | ctx = dplane_ctx_alloc(); | |
97d8d05a MS |
1595 | |
1596 | ret = dplane_ctx_pw_init(ctx, op, pw); | |
1597 | if (ret != AOK) | |
1598 | goto done; | |
1599 | ||
1600 | ret = dplane_route_enqueue(ctx); | |
1601 | ||
1602 | done: | |
1603 | /* Update counter */ | |
1604 | atomic_fetch_add_explicit(&zdplane_info.dg_pws_in, 1, | |
1605 | memory_order_relaxed); | |
1606 | ||
1607 | if (ret == AOK) | |
1608 | result = ZEBRA_DPLANE_REQUEST_QUEUED; | |
1609 | else { | |
1610 | atomic_fetch_add_explicit(&zdplane_info.dg_pw_errors, 1, | |
1611 | memory_order_relaxed); | |
1612 | if (ctx) | |
1613 | dplane_ctx_free(&ctx); | |
1614 | } | |
1615 | ||
1616 | return result; | |
1617 | } | |
1618 | ||
a4a4802a MS |
1619 | /* |
1620 | * Enqueue interface address add for the dataplane. | |
1621 | */ | |
1622 | enum zebra_dplane_result dplane_intf_addr_set(const struct interface *ifp, | |
1623 | const struct connected *ifc) | |
1624 | { | |
64168803 MS |
1625 | #if !defined(HAVE_NETLINK) && defined(HAVE_STRUCT_IFALIASREQ) |
1626 | /* Extra checks for this OS path. */ | |
1627 | ||
1628 | /* Don't configure PtP addresses on broadcast ifs or reverse */ | |
1629 | if (!(ifp->flags & IFF_POINTOPOINT) != !CONNECTED_PEER(ifc)) { | |
1630 | if (IS_ZEBRA_DEBUG_KERNEL || IS_ZEBRA_DEBUG_DPLANE) | |
1631 | zlog_debug("Failed to set intf addr: mismatch p2p and connected"); | |
1632 | ||
1633 | return ZEBRA_DPLANE_REQUEST_FAILURE; | |
1634 | } | |
1635 | ||
1636 | /* Ensure that no existing installed v4 route conflicts with | |
1637 | * the new interface prefix. This check must be done in the | |
1638 | * zebra pthread context, and any route delete (if needed) | |
1639 | * is enqueued before the interface address programming attempt. | |
1640 | */ | |
1641 | if (ifc->address->family == AF_INET) { | |
1642 | struct prefix_ipv4 *p; | |
1643 | ||
1644 | p = (struct prefix_ipv4 *)ifc->address; | |
1645 | rib_lookup_and_pushup(p, ifp->vrf_id); | |
1646 | } | |
1647 | #endif | |
1648 | ||
1649 | return intf_addr_update_internal(ifp, ifc, DPLANE_OP_ADDR_INSTALL); | |
a4a4802a MS |
1650 | } |
1651 | ||
1652 | /* | |
1653 | * Enqueue interface address remove/uninstall for the dataplane. | |
1654 | */ | |
1655 | enum zebra_dplane_result dplane_intf_addr_unset(const struct interface *ifp, | |
1656 | const struct connected *ifc) | |
1657 | { | |
64168803 MS |
1658 | return intf_addr_update_internal(ifp, ifc, DPLANE_OP_ADDR_UNINSTALL); |
1659 | } | |
1660 | ||
1661 | static enum zebra_dplane_result intf_addr_update_internal( | |
1662 | const struct interface *ifp, const struct connected *ifc, | |
1663 | enum dplane_op_e op) | |
1664 | { | |
1665 | enum zebra_dplane_result result = ZEBRA_DPLANE_REQUEST_FAILURE; | |
1666 | int ret = EINVAL; | |
1667 | struct zebra_dplane_ctx *ctx = NULL; | |
1668 | struct zebra_ns *zns; | |
1669 | ||
1670 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) { | |
1671 | char addr_str[PREFIX_STRLEN]; | |
1672 | ||
1673 | prefix2str(ifc->address, addr_str, sizeof(addr_str)); | |
1674 | ||
1675 | zlog_debug("init intf ctx %s: idx %d, addr %u:%s", | |
1676 | dplane_op2str(op), ifp->ifindex, ifp->vrf_id, | |
1677 | addr_str); | |
1678 | } | |
1679 | ||
1680 | ctx = dplane_ctx_alloc(); | |
64168803 MS |
1681 | |
1682 | ctx->zd_op = op; | |
1683 | ctx->zd_status = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
1684 | ctx->zd_vrf_id = ifp->vrf_id; | |
1685 | ||
1686 | zns = zebra_ns_lookup(ifp->vrf_id); | |
1687 | dplane_ctx_ns_init(ctx, zns, false); | |
1688 | ||
1689 | /* Init the interface-addr-specific area */ | |
1690 | memset(&ctx->u.intf, 0, sizeof(ctx->u.intf)); | |
1691 | ||
b7b7bf31 | 1692 | strlcpy(ctx->u.intf.ifname, ifp->name, sizeof(ctx->u.intf.ifname)); |
64168803 MS |
1693 | ctx->u.intf.ifindex = ifp->ifindex; |
1694 | ctx->u.intf.prefix = *(ifc->address); | |
1695 | ||
1696 | if (if_is_broadcast(ifp)) | |
1697 | ctx->u.intf.flags |= DPLANE_INTF_BROADCAST; | |
1698 | ||
1699 | if (CONNECTED_PEER(ifc)) { | |
1700 | ctx->u.intf.dest_prefix = *(ifc->destination); | |
1701 | ctx->u.intf.flags |= | |
1702 | (DPLANE_INTF_CONNECTED | DPLANE_INTF_HAS_DEST); | |
1703 | } else if (ifc->destination) { | |
1704 | ctx->u.intf.dest_prefix = *(ifc->destination); | |
1705 | ctx->u.intf.flags |= DPLANE_INTF_HAS_DEST; | |
1706 | } | |
1707 | ||
1708 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) | |
1709 | ctx->u.intf.flags |= DPLANE_INTF_SECONDARY; | |
1710 | ||
1711 | if (ifc->label) { | |
1712 | size_t len; | |
1713 | ||
1714 | ctx->u.intf.flags |= DPLANE_INTF_HAS_LABEL; | |
1715 | ||
1716 | /* Use embedded buffer if it's adequate; else allocate. */ | |
1717 | len = strlen(ifc->label); | |
1718 | ||
1719 | if (len < sizeof(ctx->u.intf.label_buf)) { | |
b7b7bf31 | 1720 | strlcpy(ctx->u.intf.label_buf, ifc->label, |
64168803 MS |
1721 | sizeof(ctx->u.intf.label_buf)); |
1722 | ctx->u.intf.label = ctx->u.intf.label_buf; | |
1723 | } else { | |
1724 | ctx->u.intf.label = strdup(ifc->label); | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | ret = dplane_route_enqueue(ctx); | |
1729 | ||
64168803 MS |
1730 | /* Increment counter */ |
1731 | atomic_fetch_add_explicit(&zdplane_info.dg_intf_addrs_in, 1, | |
1732 | memory_order_relaxed); | |
1733 | ||
1734 | if (ret == AOK) | |
1735 | result = ZEBRA_DPLANE_REQUEST_QUEUED; | |
1736 | else { | |
1737 | /* Error counter */ | |
1738 | atomic_fetch_add_explicit(&zdplane_info.dg_intf_addr_errors, | |
1739 | 1, memory_order_relaxed); | |
1740 | if (ctx) | |
1741 | dplane_ctx_free(&ctx); | |
1742 | } | |
1743 | ||
1744 | return result; | |
a4a4802a MS |
1745 | } |
1746 | ||
1d11b21f MS |
1747 | /* |
1748 | * Handler for 'show dplane' | |
1749 | */ | |
1750 | int dplane_show_helper(struct vty *vty, bool detailed) | |
1751 | { | |
16c628de MS |
1752 | uint64_t queued, queue_max, limit, errs, incoming, yields, |
1753 | other_errs; | |
1d11b21f | 1754 | |
4dfd7a02 | 1755 | /* Using atomics because counters are being changed in different |
c831033f | 1756 | * pthread contexts. |
4dfd7a02 | 1757 | */ |
25779064 | 1758 | incoming = atomic_load_explicit(&zdplane_info.dg_routes_in, |
1d11b21f | 1759 | memory_order_relaxed); |
91f16812 MS |
1760 | limit = atomic_load_explicit(&zdplane_info.dg_max_queued_updates, |
1761 | memory_order_relaxed); | |
25779064 | 1762 | queued = atomic_load_explicit(&zdplane_info.dg_routes_queued, |
1d11b21f | 1763 | memory_order_relaxed); |
25779064 | 1764 | queue_max = atomic_load_explicit(&zdplane_info.dg_routes_queued_max, |
4dfd7a02 | 1765 | memory_order_relaxed); |
25779064 | 1766 | errs = atomic_load_explicit(&zdplane_info.dg_route_errors, |
1d11b21f | 1767 | memory_order_relaxed); |
c831033f MS |
1768 | yields = atomic_load_explicit(&zdplane_info.dg_update_yields, |
1769 | memory_order_relaxed); | |
16c628de MS |
1770 | other_errs = atomic_load_explicit(&zdplane_info.dg_other_errors, |
1771 | memory_order_relaxed); | |
1d11b21f | 1772 | |
c831033f MS |
1773 | vty_out(vty, "Zebra dataplane:\nRoute updates: %"PRIu64"\n", |
1774 | incoming); | |
1d11b21f | 1775 | vty_out(vty, "Route update errors: %"PRIu64"\n", errs); |
16c628de | 1776 | vty_out(vty, "Other errors : %"PRIu64"\n", other_errs); |
91f16812 | 1777 | vty_out(vty, "Route update queue limit: %"PRIu64"\n", limit); |
1d11b21f | 1778 | vty_out(vty, "Route update queue depth: %"PRIu64"\n", queued); |
4dfd7a02 | 1779 | vty_out(vty, "Route update queue max: %"PRIu64"\n", queue_max); |
16c628de | 1780 | vty_out(vty, "Dplane update yields: %"PRIu64"\n", yields); |
1d11b21f MS |
1781 | |
1782 | return CMD_SUCCESS; | |
1783 | } | |
1784 | ||
1785 | /* | |
1786 | * Handler for 'show dplane providers' | |
1787 | */ | |
1788 | int dplane_show_provs_helper(struct vty *vty, bool detailed) | |
1789 | { | |
c831033f MS |
1790 | struct zebra_dplane_provider *prov; |
1791 | uint64_t in, in_max, out, out_max; | |
1792 | ||
1793 | vty_out(vty, "Zebra dataplane providers:\n"); | |
1794 | ||
1795 | DPLANE_LOCK(); | |
1796 | prov = TAILQ_FIRST(&zdplane_info.dg_providers_q); | |
1797 | DPLANE_UNLOCK(); | |
1798 | ||
1799 | /* Show counters, useful info from each registered provider */ | |
1800 | while (prov) { | |
1801 | ||
1802 | in = atomic_load_explicit(&prov->dp_in_counter, | |
1803 | memory_order_relaxed); | |
1804 | in_max = atomic_load_explicit(&prov->dp_in_max, | |
1805 | memory_order_relaxed); | |
1806 | out = atomic_load_explicit(&prov->dp_out_counter, | |
1807 | memory_order_relaxed); | |
1808 | out_max = atomic_load_explicit(&prov->dp_out_max, | |
1809 | memory_order_relaxed); | |
1810 | ||
c9d17fe8 MS |
1811 | vty_out(vty, "%s (%u): in: %"PRIu64", q_max: %"PRIu64", " |
1812 | "out: %"PRIu64", q_max: %"PRIu64"\n", | |
c831033f MS |
1813 | prov->dp_name, prov->dp_id, in, in_max, out, out_max); |
1814 | ||
1815 | DPLANE_LOCK(); | |
1816 | prov = TAILQ_NEXT(prov, dp_prov_link); | |
1817 | DPLANE_UNLOCK(); | |
1818 | } | |
1d11b21f MS |
1819 | |
1820 | return CMD_SUCCESS; | |
1821 | } | |
1822 | ||
b8e0423d MS |
1823 | /* |
1824 | * Provider registration | |
1825 | */ | |
1826 | int dplane_provider_register(const char *name, | |
c831033f MS |
1827 | enum dplane_provider_prio prio, |
1828 | int flags, | |
4c206c8f MS |
1829 | int (*fp)(struct zebra_dplane_provider *), |
1830 | int (*fini_fp)(struct zebra_dplane_provider *, | |
1831 | bool early), | |
1ff8a248 MS |
1832 | void *data, |
1833 | struct zebra_dplane_provider **prov_p) | |
b8e0423d MS |
1834 | { |
1835 | int ret = 0; | |
6fb51ccb | 1836 | struct zebra_dplane_provider *p = NULL, *last; |
b8e0423d MS |
1837 | |
1838 | /* Validate */ | |
1839 | if (fp == NULL) { | |
1840 | ret = EINVAL; | |
1841 | goto done; | |
1842 | } | |
1843 | ||
1844 | if (prio <= DPLANE_PRIO_NONE || | |
1bcea841 | 1845 | prio > DPLANE_PRIO_LAST) { |
b8e0423d MS |
1846 | ret = EINVAL; |
1847 | goto done; | |
1848 | } | |
1849 | ||
1850 | /* Allocate and init new provider struct */ | |
25779064 | 1851 | p = XCALLOC(MTYPE_DP_PROV, sizeof(struct zebra_dplane_provider)); |
b8e0423d | 1852 | |
c831033f MS |
1853 | pthread_mutex_init(&(p->dp_mutex), NULL); |
1854 | TAILQ_INIT(&(p->dp_ctx_in_q)); | |
1855 | TAILQ_INIT(&(p->dp_ctx_out_q)); | |
b8e0423d MS |
1856 | |
1857 | p->dp_priority = prio; | |
1858 | p->dp_fp = fp; | |
18c37974 | 1859 | p->dp_fini = fini_fp; |
c831033f | 1860 | p->dp_data = data; |
18c37974 | 1861 | |
c831033f | 1862 | /* Lock - the dplane pthread may be running */ |
18c37974 | 1863 | DPLANE_LOCK(); |
b8e0423d | 1864 | |
25779064 | 1865 | p->dp_id = ++zdplane_info.dg_provider_id; |
b8e0423d | 1866 | |
c831033f MS |
1867 | if (name) |
1868 | strlcpy(p->dp_name, name, DPLANE_PROVIDER_NAMELEN); | |
1869 | else | |
1870 | snprintf(p->dp_name, DPLANE_PROVIDER_NAMELEN, | |
1871 | "provider-%u", p->dp_id); | |
1872 | ||
b8e0423d | 1873 | /* Insert into list ordered by priority */ |
c831033f | 1874 | TAILQ_FOREACH(last, &zdplane_info.dg_providers_q, dp_prov_link) { |
5709131c | 1875 | if (last->dp_priority > p->dp_priority) |
b8e0423d | 1876 | break; |
b8e0423d MS |
1877 | } |
1878 | ||
5709131c | 1879 | if (last) |
c831033f | 1880 | TAILQ_INSERT_BEFORE(last, p, dp_prov_link); |
5709131c | 1881 | else |
25779064 | 1882 | TAILQ_INSERT_TAIL(&zdplane_info.dg_providers_q, p, |
c831033f | 1883 | dp_prov_link); |
b8e0423d | 1884 | |
18c37974 MS |
1885 | /* And unlock */ |
1886 | DPLANE_UNLOCK(); | |
1887 | ||
c831033f MS |
1888 | if (IS_ZEBRA_DEBUG_DPLANE) |
1889 | zlog_debug("dplane: registered new provider '%s' (%u), prio %d", | |
1890 | p->dp_name, p->dp_id, p->dp_priority); | |
1891 | ||
b8e0423d | 1892 | done: |
1ff8a248 MS |
1893 | if (prov_p) |
1894 | *prov_p = p; | |
1895 | ||
5709131c | 1896 | return ret; |
b8e0423d MS |
1897 | } |
1898 | ||
c831033f MS |
1899 | /* Accessors for provider attributes */ |
1900 | const char *dplane_provider_get_name(const struct zebra_dplane_provider *prov) | |
1901 | { | |
1902 | return prov->dp_name; | |
1903 | } | |
1904 | ||
1905 | uint32_t dplane_provider_get_id(const struct zebra_dplane_provider *prov) | |
1906 | { | |
1907 | return prov->dp_id; | |
1908 | } | |
1909 | ||
1910 | void *dplane_provider_get_data(const struct zebra_dplane_provider *prov) | |
1911 | { | |
1912 | return prov->dp_data; | |
1913 | } | |
1914 | ||
1915 | int dplane_provider_get_work_limit(const struct zebra_dplane_provider *prov) | |
1916 | { | |
1917 | return zdplane_info.dg_updates_per_cycle; | |
1918 | } | |
1919 | ||
ad6aad4d MS |
1920 | /* Lock/unlock a provider's mutex - iff the provider was registered with |
1921 | * the THREADED flag. | |
1922 | */ | |
1923 | void dplane_provider_lock(struct zebra_dplane_provider *prov) | |
1924 | { | |
1925 | if (dplane_provider_is_threaded(prov)) | |
1926 | DPLANE_PROV_LOCK(prov); | |
1927 | } | |
1928 | ||
1929 | void dplane_provider_unlock(struct zebra_dplane_provider *prov) | |
1930 | { | |
1931 | if (dplane_provider_is_threaded(prov)) | |
1932 | DPLANE_PROV_UNLOCK(prov); | |
1933 | } | |
1934 | ||
c831033f MS |
1935 | /* |
1936 | * Dequeue and maintain associated counter | |
1937 | */ | |
1938 | struct zebra_dplane_ctx *dplane_provider_dequeue_in_ctx( | |
1939 | struct zebra_dplane_provider *prov) | |
1940 | { | |
1941 | struct zebra_dplane_ctx *ctx = NULL; | |
1942 | ||
ad6aad4d | 1943 | dplane_provider_lock(prov); |
c831033f MS |
1944 | |
1945 | ctx = TAILQ_FIRST(&(prov->dp_ctx_in_q)); | |
1946 | if (ctx) { | |
1947 | TAILQ_REMOVE(&(prov->dp_ctx_in_q), ctx, zd_q_entries); | |
c9d17fe8 MS |
1948 | |
1949 | atomic_fetch_sub_explicit(&prov->dp_in_queued, 1, | |
1950 | memory_order_relaxed); | |
c831033f MS |
1951 | } |
1952 | ||
ad6aad4d | 1953 | dplane_provider_unlock(prov); |
c831033f MS |
1954 | |
1955 | return ctx; | |
1956 | } | |
1957 | ||
1958 | /* | |
1959 | * Dequeue work to a list, return count | |
1960 | */ | |
1961 | int dplane_provider_dequeue_in_list(struct zebra_dplane_provider *prov, | |
1962 | struct dplane_ctx_q *listp) | |
1963 | { | |
1964 | int limit, ret; | |
1965 | struct zebra_dplane_ctx *ctx; | |
1966 | ||
1967 | limit = zdplane_info.dg_updates_per_cycle; | |
1968 | ||
ad6aad4d | 1969 | dplane_provider_lock(prov); |
c831033f MS |
1970 | |
1971 | for (ret = 0; ret < limit; ret++) { | |
1972 | ctx = TAILQ_FIRST(&(prov->dp_ctx_in_q)); | |
1973 | if (ctx) { | |
1974 | TAILQ_REMOVE(&(prov->dp_ctx_in_q), ctx, zd_q_entries); | |
1975 | ||
1976 | TAILQ_INSERT_TAIL(listp, ctx, zd_q_entries); | |
1977 | } else { | |
1978 | break; | |
1979 | } | |
1980 | } | |
1981 | ||
c9d17fe8 MS |
1982 | if (ret > 0) |
1983 | atomic_fetch_sub_explicit(&prov->dp_in_queued, ret, | |
1984 | memory_order_relaxed); | |
1985 | ||
ad6aad4d | 1986 | dplane_provider_unlock(prov); |
c831033f MS |
1987 | |
1988 | return ret; | |
1989 | } | |
1990 | ||
1991 | /* | |
1992 | * Enqueue and maintain associated counter | |
1993 | */ | |
1994 | void dplane_provider_enqueue_out_ctx(struct zebra_dplane_provider *prov, | |
1995 | struct zebra_dplane_ctx *ctx) | |
1996 | { | |
ad6aad4d | 1997 | dplane_provider_lock(prov); |
c831033f MS |
1998 | |
1999 | TAILQ_INSERT_TAIL(&(prov->dp_ctx_out_q), ctx, | |
2000 | zd_q_entries); | |
2001 | ||
ad6aad4d | 2002 | dplane_provider_unlock(prov); |
c831033f MS |
2003 | |
2004 | atomic_fetch_add_explicit(&(prov->dp_out_counter), 1, | |
2005 | memory_order_relaxed); | |
2006 | } | |
2007 | ||
62b8bb7a MS |
2008 | /* |
2009 | * Accessor for provider object | |
2010 | */ | |
c831033f MS |
2011 | bool dplane_provider_is_threaded(const struct zebra_dplane_provider *prov) |
2012 | { | |
2013 | return (prov->dp_flags & DPLANE_PROV_FLAG_THREADED); | |
2014 | } | |
2015 | ||
62b8bb7a MS |
2016 | /* |
2017 | * Internal helper that copies information from a zebra ns object; this is | |
2018 | * called in the zebra main pthread context as part of dplane ctx init. | |
2019 | */ | |
2020 | static void dplane_info_from_zns(struct zebra_dplane_info *ns_info, | |
2021 | struct zebra_ns *zns) | |
2022 | { | |
2023 | ns_info->ns_id = zns->ns_id; | |
2024 | ||
2025 | #if defined(HAVE_NETLINK) | |
2026 | ns_info->is_cmd = true; | |
2027 | ns_info->nls = zns->netlink_dplane; | |
2028 | #endif /* NETLINK */ | |
2029 | } | |
2030 | ||
c831033f MS |
2031 | /* |
2032 | * Provider api to signal that work/events are available | |
2033 | * for the dataplane pthread. | |
2034 | */ | |
2035 | int dplane_provider_work_ready(void) | |
2036 | { | |
e5a60d82 MS |
2037 | /* Note that during zebra startup, we may be offered work before |
2038 | * the dataplane pthread (and thread-master) are ready. We want to | |
2039 | * enqueue the work, but the event-scheduling machinery may not be | |
2040 | * available. | |
2041 | */ | |
2042 | if (zdplane_info.dg_run) { | |
2043 | thread_add_event(zdplane_info.dg_master, | |
2044 | dplane_thread_loop, NULL, 0, | |
2045 | &zdplane_info.dg_t_update); | |
2046 | } | |
c831033f MS |
2047 | |
2048 | return AOK; | |
2049 | } | |
2050 | ||
7cdb1a84 | 2051 | /* |
c831033f | 2052 | * Kernel dataplane provider |
7cdb1a84 | 2053 | */ |
c831033f | 2054 | |
16c628de MS |
2055 | /* |
2056 | * Handler for kernel LSP updates | |
2057 | */ | |
2058 | static enum zebra_dplane_result | |
2059 | kernel_dplane_lsp_update(struct zebra_dplane_ctx *ctx) | |
2060 | { | |
2061 | enum zebra_dplane_result res; | |
2062 | ||
2063 | /* Call into the synchronous kernel-facing code here */ | |
2064 | res = kernel_lsp_update(ctx); | |
2065 | ||
2066 | if (res != ZEBRA_DPLANE_REQUEST_SUCCESS) | |
2067 | atomic_fetch_add_explicit( | |
2068 | &zdplane_info.dg_lsp_errors, 1, | |
2069 | memory_order_relaxed); | |
2070 | ||
2071 | return res; | |
2072 | } | |
2073 | ||
c10a646d MS |
2074 | /* |
2075 | * Handler for kernel pseudowire updates | |
2076 | */ | |
2077 | static enum zebra_dplane_result | |
2078 | kernel_dplane_pw_update(struct zebra_dplane_ctx *ctx) | |
2079 | { | |
2080 | enum zebra_dplane_result res; | |
2081 | ||
2082 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
2083 | zlog_debug("Dplane pw %s: op %s af %d loc: %u rem: %u", | |
2084 | dplane_ctx_get_pw_ifname(ctx), | |
2085 | dplane_op2str(ctx->zd_op), | |
2086 | dplane_ctx_get_pw_af(ctx), | |
2087 | dplane_ctx_get_pw_local_label(ctx), | |
2088 | dplane_ctx_get_pw_remote_label(ctx)); | |
2089 | ||
2090 | res = kernel_pw_update(ctx); | |
2091 | ||
2092 | if (res != ZEBRA_DPLANE_REQUEST_SUCCESS) | |
2093 | atomic_fetch_add_explicit( | |
2094 | &zdplane_info.dg_pw_errors, 1, | |
2095 | memory_order_relaxed); | |
2096 | ||
2097 | return res; | |
2098 | } | |
2099 | ||
16c628de MS |
2100 | /* |
2101 | * Handler for kernel route updates | |
2102 | */ | |
2103 | static enum zebra_dplane_result | |
2104 | kernel_dplane_route_update(struct zebra_dplane_ctx *ctx) | |
2105 | { | |
2106 | enum zebra_dplane_result res; | |
2107 | ||
2108 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) { | |
2109 | char dest_str[PREFIX_STRLEN]; | |
2110 | ||
2111 | prefix2str(dplane_ctx_get_dest(ctx), | |
2112 | dest_str, sizeof(dest_str)); | |
2113 | ||
2114 | zlog_debug("%u:%s Dplane route update ctx %p op %s", | |
2115 | dplane_ctx_get_vrf(ctx), dest_str, | |
2116 | ctx, dplane_op2str(dplane_ctx_get_op(ctx))); | |
2117 | } | |
2118 | ||
2119 | /* Call into the synchronous kernel-facing code here */ | |
2120 | res = kernel_route_update(ctx); | |
2121 | ||
2122 | if (res != ZEBRA_DPLANE_REQUEST_SUCCESS) | |
2123 | atomic_fetch_add_explicit( | |
2124 | &zdplane_info.dg_route_errors, 1, | |
2125 | memory_order_relaxed); | |
2126 | ||
2127 | return res; | |
2128 | } | |
2129 | ||
64168803 MS |
2130 | /* |
2131 | * Handler for kernel-facing interface address updates | |
2132 | */ | |
2133 | static enum zebra_dplane_result | |
2134 | kernel_dplane_address_update(struct zebra_dplane_ctx *ctx) | |
2135 | { | |
2136 | enum zebra_dplane_result res; | |
2137 | ||
2138 | ||
2139 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) { | |
2140 | char dest_str[PREFIX_STRLEN]; | |
2141 | ||
2142 | prefix2str(dplane_ctx_get_intf_addr(ctx), dest_str, | |
2143 | sizeof(dest_str)); | |
2144 | ||
2145 | zlog_debug("Dplane intf %s, idx %u, addr %s", | |
2146 | dplane_op2str(dplane_ctx_get_op(ctx)), | |
2147 | dplane_ctx_get_ifindex(ctx), dest_str); | |
2148 | } | |
2149 | ||
2150 | res = kernel_address_update_ctx(ctx); | |
2151 | ||
2152 | if (res != ZEBRA_DPLANE_REQUEST_SUCCESS) | |
2153 | atomic_fetch_add_explicit(&zdplane_info.dg_intf_addr_errors, | |
2154 | 1, memory_order_relaxed); | |
2155 | ||
2156 | return res; | |
2157 | } | |
2158 | ||
c831033f MS |
2159 | /* |
2160 | * Kernel provider callback | |
2161 | */ | |
2162 | static int kernel_dplane_process_func(struct zebra_dplane_provider *prov) | |
7cdb1a84 | 2163 | { |
c831033f MS |
2164 | enum zebra_dplane_result res; |
2165 | struct zebra_dplane_ctx *ctx; | |
2166 | int counter, limit; | |
7cdb1a84 | 2167 | |
c831033f | 2168 | limit = dplane_provider_get_work_limit(prov); |
7cdb1a84 | 2169 | |
c831033f MS |
2170 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
2171 | zlog_debug("dplane provider '%s': processing", | |
2172 | dplane_provider_get_name(prov)); | |
7cdb1a84 | 2173 | |
c831033f | 2174 | for (counter = 0; counter < limit; counter++) { |
91f16812 | 2175 | |
c831033f MS |
2176 | ctx = dplane_provider_dequeue_in_ctx(prov); |
2177 | if (ctx == NULL) | |
2178 | break; | |
d8c16a95 | 2179 | |
9677961e MS |
2180 | /* A previous provider plugin may have asked to skip the |
2181 | * kernel update. | |
2182 | */ | |
2183 | if (dplane_ctx_is_skip_kernel(ctx)) { | |
2184 | res = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
2185 | goto skip_one; | |
2186 | } | |
2187 | ||
16c628de MS |
2188 | /* Dispatch to appropriate kernel-facing apis */ |
2189 | switch (dplane_ctx_get_op(ctx)) { | |
1d11b21f | 2190 | |
16c628de MS |
2191 | case DPLANE_OP_ROUTE_INSTALL: |
2192 | case DPLANE_OP_ROUTE_UPDATE: | |
2193 | case DPLANE_OP_ROUTE_DELETE: | |
2194 | res = kernel_dplane_route_update(ctx); | |
2195 | break; | |
d8c16a95 | 2196 | |
16c628de MS |
2197 | case DPLANE_OP_LSP_INSTALL: |
2198 | case DPLANE_OP_LSP_UPDATE: | |
2199 | case DPLANE_OP_LSP_DELETE: | |
2200 | res = kernel_dplane_lsp_update(ctx); | |
2201 | break; | |
d8c16a95 | 2202 | |
c10a646d MS |
2203 | case DPLANE_OP_PW_INSTALL: |
2204 | case DPLANE_OP_PW_UNINSTALL: | |
2205 | res = kernel_dplane_pw_update(ctx); | |
2206 | break; | |
2207 | ||
64168803 MS |
2208 | case DPLANE_OP_ADDR_INSTALL: |
2209 | case DPLANE_OP_ADDR_UNINSTALL: | |
2210 | res = kernel_dplane_address_update(ctx); | |
2211 | break; | |
2212 | ||
cf363e1b MS |
2213 | /* Ignore system 'notifications' - the kernel already knows */ |
2214 | case DPLANE_OP_SYS_ROUTE_ADD: | |
2215 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
2216 | res = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
2217 | break; | |
2218 | ||
16c628de | 2219 | default: |
c831033f | 2220 | atomic_fetch_add_explicit( |
16c628de | 2221 | &zdplane_info.dg_other_errors, 1, |
c831033f | 2222 | memory_order_relaxed); |
d8c16a95 | 2223 | |
16c628de MS |
2224 | res = ZEBRA_DPLANE_REQUEST_FAILURE; |
2225 | break; | |
2226 | } | |
2227 | ||
9677961e | 2228 | skip_one: |
c831033f MS |
2229 | dplane_ctx_set_status(ctx, res); |
2230 | ||
2231 | dplane_provider_enqueue_out_ctx(prov, ctx); | |
2232 | } | |
2233 | ||
2234 | /* Ensure that we'll run the work loop again if there's still | |
2235 | * more work to do. | |
2236 | */ | |
2237 | if (counter >= limit) { | |
2238 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
2239 | zlog_debug("dplane provider '%s' reached max updates %d", | |
2240 | dplane_provider_get_name(prov), counter); | |
2241 | ||
2242 | atomic_fetch_add_explicit(&zdplane_info.dg_update_yields, | |
2243 | 1, memory_order_relaxed); | |
2244 | ||
2245 | dplane_provider_work_ready(); | |
2246 | } | |
2247 | ||
2248 | return 0; | |
2249 | } | |
2250 | ||
e5a60d82 MS |
2251 | #if DPLANE_TEST_PROVIDER |
2252 | ||
c831033f MS |
2253 | /* |
2254 | * Test dataplane provider plugin | |
2255 | */ | |
2256 | ||
2257 | /* | |
2258 | * Test provider process callback | |
2259 | */ | |
2260 | static int test_dplane_process_func(struct zebra_dplane_provider *prov) | |
2261 | { | |
2262 | struct zebra_dplane_ctx *ctx; | |
2263 | int counter, limit; | |
2264 | ||
2265 | /* Just moving from 'in' queue to 'out' queue */ | |
2266 | ||
2267 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
2268 | zlog_debug("dplane provider '%s': processing", | |
2269 | dplane_provider_get_name(prov)); | |
2270 | ||
2271 | limit = dplane_provider_get_work_limit(prov); | |
2272 | ||
2273 | for (counter = 0; counter < limit; counter++) { | |
2274 | ||
2275 | ctx = dplane_provider_dequeue_in_ctx(prov); | |
2276 | if (ctx == NULL) | |
2277 | break; | |
2278 | ||
cf363e1b MS |
2279 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
2280 | zlog_debug("dplane provider '%s': op %s", | |
2281 | dplane_provider_get_name(prov), | |
2282 | dplane_op2str(dplane_ctx_get_op(ctx))); | |
2283 | ||
c831033f MS |
2284 | dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); |
2285 | ||
2286 | dplane_provider_enqueue_out_ctx(prov, ctx); | |
2287 | } | |
2288 | ||
c9d17fe8 MS |
2289 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
2290 | zlog_debug("dplane provider '%s': processed %d", | |
2291 | dplane_provider_get_name(prov), counter); | |
2292 | ||
c831033f MS |
2293 | /* Ensure that we'll run the work loop again if there's still |
2294 | * more work to do. | |
2295 | */ | |
2296 | if (counter >= limit) | |
2297 | dplane_provider_work_ready(); | |
2298 | ||
2299 | return 0; | |
2300 | } | |
2301 | ||
2302 | /* | |
2303 | * Test provider shutdown/fini callback | |
2304 | */ | |
2305 | static int test_dplane_shutdown_func(struct zebra_dplane_provider *prov, | |
2306 | bool early) | |
2307 | { | |
2308 | if (IS_ZEBRA_DEBUG_DPLANE) | |
2309 | zlog_debug("dplane provider '%s': %sshutdown", | |
2310 | dplane_provider_get_name(prov), | |
2311 | early ? "early " : ""); | |
2312 | ||
2313 | return 0; | |
2314 | } | |
e5a60d82 | 2315 | #endif /* DPLANE_TEST_PROVIDER */ |
c831033f MS |
2316 | |
2317 | /* | |
2318 | * Register default kernel provider | |
2319 | */ | |
2320 | static void dplane_provider_init(void) | |
2321 | { | |
2322 | int ret; | |
2323 | ||
2324 | ret = dplane_provider_register("Kernel", | |
2325 | DPLANE_PRIO_KERNEL, | |
2326 | DPLANE_PROV_FLAGS_DEFAULT, | |
2327 | kernel_dplane_process_func, | |
2328 | NULL, | |
1ff8a248 | 2329 | NULL, NULL); |
c831033f MS |
2330 | |
2331 | if (ret != AOK) | |
2332 | zlog_err("Unable to register kernel dplane provider: %d", | |
2333 | ret); | |
2334 | ||
e5a60d82 MS |
2335 | #if DPLANE_TEST_PROVIDER |
2336 | /* Optional test provider ... */ | |
c831033f MS |
2337 | ret = dplane_provider_register("Test", |
2338 | DPLANE_PRIO_PRE_KERNEL, | |
2339 | DPLANE_PROV_FLAGS_DEFAULT, | |
2340 | test_dplane_process_func, | |
2341 | test_dplane_shutdown_func, | |
1ff8a248 | 2342 | NULL /* data */, NULL); |
c831033f MS |
2343 | |
2344 | if (ret != AOK) | |
2345 | zlog_err("Unable to register test dplane provider: %d", | |
2346 | ret); | |
e5a60d82 | 2347 | #endif /* DPLANE_TEST_PROVIDER */ |
7cdb1a84 MS |
2348 | } |
2349 | ||
4dfd7a02 MS |
2350 | /* Indicates zebra shutdown/exit is in progress. Some operations may be |
2351 | * simplified or skipped during shutdown processing. | |
2352 | */ | |
2353 | bool dplane_is_in_shutdown(void) | |
2354 | { | |
25779064 | 2355 | return zdplane_info.dg_is_shutdown; |
4dfd7a02 MS |
2356 | } |
2357 | ||
2358 | /* | |
2359 | * Early or pre-shutdown, de-init notification api. This runs pretty | |
2360 | * early during zebra shutdown, as a signal to stop new work and prepare | |
2361 | * for updates generated by shutdown/cleanup activity, as zebra tries to | |
2362 | * remove everything it's responsible for. | |
c9d17fe8 | 2363 | * NB: This runs in the main zebra pthread context. |
4dfd7a02 MS |
2364 | */ |
2365 | void zebra_dplane_pre_finish(void) | |
2366 | { | |
2367 | if (IS_ZEBRA_DEBUG_DPLANE) | |
2368 | zlog_debug("Zebra dataplane pre-fini called"); | |
2369 | ||
25779064 | 2370 | zdplane_info.dg_is_shutdown = true; |
4dfd7a02 | 2371 | |
c9d17fe8 | 2372 | /* TODO -- Notify provider(s) of pending shutdown */ |
4dfd7a02 MS |
2373 | } |
2374 | ||
2375 | /* | |
2376 | * Utility to determine whether work remains enqueued within the dplane; | |
2377 | * used during system shutdown processing. | |
2378 | */ | |
2379 | static bool dplane_work_pending(void) | |
2380 | { | |
c9d17fe8 | 2381 | bool ret = false; |
25779064 | 2382 | struct zebra_dplane_ctx *ctx; |
c9d17fe8 | 2383 | struct zebra_dplane_provider *prov; |
4dfd7a02 | 2384 | |
c831033f MS |
2385 | /* TODO -- just checking incoming/pending work for now, must check |
2386 | * providers | |
2387 | */ | |
4dfd7a02 MS |
2388 | DPLANE_LOCK(); |
2389 | { | |
25779064 | 2390 | ctx = TAILQ_FIRST(&zdplane_info.dg_route_ctx_q); |
c9d17fe8 | 2391 | prov = TAILQ_FIRST(&zdplane_info.dg_providers_q); |
4dfd7a02 MS |
2392 | } |
2393 | DPLANE_UNLOCK(); | |
2394 | ||
c9d17fe8 MS |
2395 | if (ctx != NULL) { |
2396 | ret = true; | |
2397 | goto done; | |
2398 | } | |
2399 | ||
2400 | while (prov) { | |
2401 | ||
ad6aad4d | 2402 | dplane_provider_lock(prov); |
c9d17fe8 MS |
2403 | |
2404 | ctx = TAILQ_FIRST(&(prov->dp_ctx_in_q)); | |
2405 | if (ctx == NULL) | |
2406 | ctx = TAILQ_FIRST(&(prov->dp_ctx_out_q)); | |
2407 | ||
ad6aad4d | 2408 | dplane_provider_unlock(prov); |
c9d17fe8 MS |
2409 | |
2410 | if (ctx != NULL) | |
2411 | break; | |
2412 | ||
2413 | DPLANE_LOCK(); | |
2414 | prov = TAILQ_NEXT(prov, dp_prov_link); | |
2415 | DPLANE_UNLOCK(); | |
2416 | } | |
2417 | ||
2418 | if (ctx != NULL) | |
2419 | ret = true; | |
2420 | ||
2421 | done: | |
2422 | return ret; | |
4dfd7a02 MS |
2423 | } |
2424 | ||
2425 | /* | |
2426 | * Shutdown-time intermediate callback, used to determine when all pending | |
2427 | * in-flight updates are done. If there's still work to do, reschedules itself. | |
2428 | * If all work is done, schedules an event to the main zebra thread for | |
2429 | * final zebra shutdown. | |
2430 | * This runs in the dplane pthread context. | |
2431 | */ | |
2432 | static int dplane_check_shutdown_status(struct thread *event) | |
2433 | { | |
2434 | if (IS_ZEBRA_DEBUG_DPLANE) | |
2435 | zlog_debug("Zebra dataplane shutdown status check called"); | |
2436 | ||
2437 | if (dplane_work_pending()) { | |
2438 | /* Reschedule dplane check on a short timer */ | |
25779064 | 2439 | thread_add_timer_msec(zdplane_info.dg_master, |
4dfd7a02 MS |
2440 | dplane_check_shutdown_status, |
2441 | NULL, 100, | |
25779064 | 2442 | &zdplane_info.dg_t_shutdown_check); |
4dfd7a02 MS |
2443 | |
2444 | /* TODO - give up and stop waiting after a short time? */ | |
2445 | ||
2446 | } else { | |
2447 | /* We appear to be done - schedule a final callback event | |
2448 | * for the zebra main pthread. | |
2449 | */ | |
3801e764 | 2450 | thread_add_event(zrouter.master, zebra_finalize, NULL, 0, NULL); |
4dfd7a02 MS |
2451 | } |
2452 | ||
2453 | return 0; | |
2454 | } | |
2455 | ||
18c37974 | 2456 | /* |
1d11b21f | 2457 | * Shutdown, de-init api. This runs pretty late during shutdown, |
4dfd7a02 MS |
2458 | * after zebra has tried to free/remove/uninstall all routes during shutdown. |
2459 | * At this point, dplane work may still remain to be done, so we can't just | |
2460 | * blindly terminate. If there's still work to do, we'll periodically check | |
2461 | * and when done, we'll enqueue a task to the zebra main thread for final | |
2462 | * termination processing. | |
2463 | * | |
1d11b21f | 2464 | * NB: This runs in the main zebra thread context. |
18c37974 | 2465 | */ |
1d11b21f | 2466 | void zebra_dplane_finish(void) |
18c37974 | 2467 | { |
4dfd7a02 MS |
2468 | if (IS_ZEBRA_DEBUG_DPLANE) |
2469 | zlog_debug("Zebra dataplane fini called"); | |
2470 | ||
25779064 | 2471 | thread_add_event(zdplane_info.dg_master, |
4dfd7a02 | 2472 | dplane_check_shutdown_status, NULL, 0, |
25779064 | 2473 | &zdplane_info.dg_t_shutdown_check); |
4dfd7a02 MS |
2474 | } |
2475 | ||
c831033f MS |
2476 | /* |
2477 | * Main dataplane pthread event loop. The thread takes new incoming work | |
2478 | * and offers it to the first provider. It then iterates through the | |
2479 | * providers, taking complete work from each one and offering it | |
2480 | * to the next in order. At each step, a limited number of updates are | |
2481 | * processed during a cycle in order to provide some fairness. | |
14b0bc8e MS |
2482 | * |
2483 | * This loop through the providers is only run once, so that the dataplane | |
2484 | * pthread can look for other pending work - such as i/o work on behalf of | |
2485 | * providers. | |
c831033f MS |
2486 | */ |
2487 | static int dplane_thread_loop(struct thread *event) | |
2488 | { | |
2489 | struct dplane_ctx_q work_list; | |
2490 | struct dplane_ctx_q error_list; | |
2491 | struct zebra_dplane_provider *prov; | |
2492 | struct zebra_dplane_ctx *ctx, *tctx; | |
2493 | int limit, counter, error_counter; | |
c9d17fe8 | 2494 | uint64_t curr, high; |
c831033f MS |
2495 | |
2496 | /* Capture work limit per cycle */ | |
2497 | limit = zdplane_info.dg_updates_per_cycle; | |
2498 | ||
14b0bc8e | 2499 | /* Init temporary lists used to move contexts among providers */ |
c831033f | 2500 | TAILQ_INIT(&work_list); |
14b0bc8e MS |
2501 | TAILQ_INIT(&error_list); |
2502 | error_counter = 0; | |
c831033f MS |
2503 | |
2504 | /* Check for zebra shutdown */ | |
2505 | if (!zdplane_info.dg_run) | |
2506 | goto done; | |
2507 | ||
2508 | /* Dequeue some incoming work from zebra (if any) onto the temporary | |
2509 | * working list. | |
2510 | */ | |
2511 | DPLANE_LOCK(); | |
2512 | ||
2513 | /* Locate initial registered provider */ | |
2514 | prov = TAILQ_FIRST(&zdplane_info.dg_providers_q); | |
2515 | ||
14b0bc8e | 2516 | /* Move new work from incoming list to temp list */ |
c831033f MS |
2517 | for (counter = 0; counter < limit; counter++) { |
2518 | ctx = TAILQ_FIRST(&zdplane_info.dg_route_ctx_q); | |
2519 | if (ctx) { | |
2520 | TAILQ_REMOVE(&zdplane_info.dg_route_ctx_q, ctx, | |
2521 | zd_q_entries); | |
2522 | ||
c831033f MS |
2523 | ctx->zd_provider = prov->dp_id; |
2524 | ||
2525 | TAILQ_INSERT_TAIL(&work_list, ctx, zd_q_entries); | |
2526 | } else { | |
2527 | break; | |
2528 | } | |
2529 | } | |
2530 | ||
2531 | DPLANE_UNLOCK(); | |
2532 | ||
14b0bc8e MS |
2533 | atomic_fetch_sub_explicit(&zdplane_info.dg_routes_queued, counter, |
2534 | memory_order_relaxed); | |
2535 | ||
c831033f MS |
2536 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
2537 | zlog_debug("dplane: incoming new work counter: %d", counter); | |
2538 | ||
2539 | /* Iterate through the registered providers, offering new incoming | |
2540 | * work. If the provider has outgoing work in its queue, take that | |
2541 | * work for the next provider | |
2542 | */ | |
2543 | while (prov) { | |
2544 | ||
14b0bc8e MS |
2545 | /* At each iteration, the temporary work list has 'counter' |
2546 | * items. | |
2547 | */ | |
c831033f MS |
2548 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
2549 | zlog_debug("dplane enqueues %d new work to provider '%s'", | |
2550 | counter, dplane_provider_get_name(prov)); | |
2551 | ||
2552 | /* Capture current provider id in each context; check for | |
2553 | * error status. | |
2554 | */ | |
2555 | TAILQ_FOREACH_SAFE(ctx, &work_list, zd_q_entries, tctx) { | |
2556 | if (dplane_ctx_get_status(ctx) == | |
2557 | ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
2558 | ctx->zd_provider = prov->dp_id; | |
2559 | } else { | |
2560 | /* | |
2561 | * TODO -- improve error-handling: recirc | |
2562 | * errors backwards so that providers can | |
2563 | * 'undo' their work (if they want to) | |
2564 | */ | |
2565 | ||
2566 | /* Move to error list; will be returned | |
2567 | * zebra main. | |
2568 | */ | |
2569 | TAILQ_REMOVE(&work_list, ctx, zd_q_entries); | |
2570 | TAILQ_INSERT_TAIL(&error_list, | |
2571 | ctx, zd_q_entries); | |
2572 | error_counter++; | |
2573 | } | |
2574 | } | |
2575 | ||
2576 | /* Enqueue new work to the provider */ | |
ad6aad4d | 2577 | dplane_provider_lock(prov); |
c831033f MS |
2578 | |
2579 | if (TAILQ_FIRST(&work_list)) | |
2580 | TAILQ_CONCAT(&(prov->dp_ctx_in_q), &work_list, | |
2581 | zd_q_entries); | |
2582 | ||
c9d17fe8 MS |
2583 | atomic_fetch_add_explicit(&prov->dp_in_counter, counter, |
2584 | memory_order_relaxed); | |
2585 | atomic_fetch_add_explicit(&prov->dp_in_queued, counter, | |
2586 | memory_order_relaxed); | |
2587 | curr = atomic_load_explicit(&prov->dp_in_queued, | |
2588 | memory_order_relaxed); | |
2589 | high = atomic_load_explicit(&prov->dp_in_max, | |
2590 | memory_order_relaxed); | |
2591 | if (curr > high) | |
2592 | atomic_store_explicit(&prov->dp_in_max, curr, | |
c831033f MS |
2593 | memory_order_relaxed); |
2594 | ||
ad6aad4d | 2595 | dplane_provider_unlock(prov); |
c831033f | 2596 | |
14b0bc8e MS |
2597 | /* Reset the temp list (though the 'concat' may have done this |
2598 | * already), and the counter | |
2599 | */ | |
c831033f MS |
2600 | TAILQ_INIT(&work_list); |
2601 | counter = 0; | |
2602 | ||
14b0bc8e MS |
2603 | /* Call into the provider code. Note that this is |
2604 | * unconditional: we offer to do work even if we don't enqueue | |
2605 | * any _new_ work. | |
2606 | */ | |
c831033f MS |
2607 | (*prov->dp_fp)(prov); |
2608 | ||
2609 | /* Check for zebra shutdown */ | |
2610 | if (!zdplane_info.dg_run) | |
2611 | break; | |
2612 | ||
2613 | /* Dequeue completed work from the provider */ | |
ad6aad4d | 2614 | dplane_provider_lock(prov); |
c831033f MS |
2615 | |
2616 | while (counter < limit) { | |
2617 | ctx = TAILQ_FIRST(&(prov->dp_ctx_out_q)); | |
2618 | if (ctx) { | |
2619 | TAILQ_REMOVE(&(prov->dp_ctx_out_q), ctx, | |
2620 | zd_q_entries); | |
2621 | ||
2622 | TAILQ_INSERT_TAIL(&work_list, | |
2623 | ctx, zd_q_entries); | |
2624 | counter++; | |
2625 | } else | |
2626 | break; | |
2627 | } | |
2628 | ||
ad6aad4d | 2629 | dplane_provider_unlock(prov); |
c831033f MS |
2630 | |
2631 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
2632 | zlog_debug("dplane dequeues %d completed work from provider %s", | |
2633 | counter, dplane_provider_get_name(prov)); | |
2634 | ||
2635 | /* Locate next provider */ | |
2636 | DPLANE_LOCK(); | |
2637 | prov = TAILQ_NEXT(prov, dp_prov_link); | |
2638 | DPLANE_UNLOCK(); | |
c831033f MS |
2639 | } |
2640 | ||
2641 | /* After all providers have been serviced, enqueue any completed | |
14b0bc8e | 2642 | * work and any errors back to zebra so it can process the results. |
c831033f | 2643 | */ |
c831033f | 2644 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
14b0bc8e MS |
2645 | zlog_debug("dplane has %d completed, %d errors, for zebra main", |
2646 | counter, error_counter); | |
c831033f MS |
2647 | |
2648 | /* | |
4c206c8f | 2649 | * Hand lists through the api to zebra main, |
c831033f MS |
2650 | * to reduce the number of lock/unlock cycles |
2651 | */ | |
14b0bc8e | 2652 | |
4c206c8f MS |
2653 | /* Call through to zebra main */ |
2654 | (zdplane_info.dg_results_cb)(&error_list); | |
14b0bc8e | 2655 | |
4c206c8f | 2656 | TAILQ_INIT(&error_list); |
14b0bc8e | 2657 | |
c831033f | 2658 | |
4c206c8f MS |
2659 | /* Call through to zebra main */ |
2660 | (zdplane_info.dg_results_cb)(&work_list); | |
c831033f | 2661 | |
4c206c8f | 2662 | TAILQ_INIT(&work_list); |
c831033f MS |
2663 | |
2664 | done: | |
2665 | return 0; | |
2666 | } | |
2667 | ||
4dfd7a02 MS |
2668 | /* |
2669 | * Final phase of shutdown, after all work enqueued to dplane has been | |
2670 | * processed. This is called from the zebra main pthread context. | |
2671 | */ | |
2672 | void zebra_dplane_shutdown(void) | |
2673 | { | |
2674 | if (IS_ZEBRA_DEBUG_DPLANE) | |
2675 | zlog_debug("Zebra dataplane shutdown called"); | |
1d11b21f MS |
2676 | |
2677 | /* Stop dplane thread, if it's running */ | |
2678 | ||
25779064 | 2679 | zdplane_info.dg_run = false; |
1d11b21f | 2680 | |
25779064 | 2681 | THREAD_OFF(zdplane_info.dg_t_update); |
1d11b21f | 2682 | |
d8c16a95 MS |
2683 | frr_pthread_stop(zdplane_info.dg_pthread, NULL); |
2684 | ||
2685 | /* Destroy pthread */ | |
2686 | frr_pthread_destroy(zdplane_info.dg_pthread); | |
2687 | zdplane_info.dg_pthread = NULL; | |
2688 | zdplane_info.dg_master = NULL; | |
4dfd7a02 | 2689 | |
c831033f MS |
2690 | /* TODO -- Notify provider(s) of final shutdown */ |
2691 | ||
2692 | /* TODO -- Clean-up provider objects */ | |
2693 | ||
2694 | /* TODO -- Clean queue(s), free memory */ | |
2695 | } | |
2696 | ||
2697 | /* | |
2698 | * Initialize the dataplane module during startup, internal/private version | |
2699 | */ | |
2561d12e | 2700 | static void zebra_dplane_init_internal(void) |
c831033f MS |
2701 | { |
2702 | memset(&zdplane_info, 0, sizeof(zdplane_info)); | |
2703 | ||
2704 | pthread_mutex_init(&zdplane_info.dg_mutex, NULL); | |
1d11b21f | 2705 | |
c831033f MS |
2706 | TAILQ_INIT(&zdplane_info.dg_route_ctx_q); |
2707 | TAILQ_INIT(&zdplane_info.dg_providers_q); | |
1d11b21f | 2708 | |
c831033f MS |
2709 | zdplane_info.dg_updates_per_cycle = DPLANE_DEFAULT_NEW_WORK; |
2710 | ||
2711 | zdplane_info.dg_max_queued_updates = DPLANE_DEFAULT_MAX_QUEUED; | |
2712 | ||
2713 | /* Register default kernel 'provider' during init */ | |
2714 | dplane_provider_init(); | |
e5a60d82 | 2715 | } |
c831033f | 2716 | |
e5a60d82 MS |
2717 | /* |
2718 | * Start the dataplane pthread. This step needs to be run later than the | |
2719 | * 'init' step, in case zebra has fork-ed. | |
2720 | */ | |
2721 | void zebra_dplane_start(void) | |
2722 | { | |
c831033f MS |
2723 | /* Start dataplane pthread */ |
2724 | ||
c831033f MS |
2725 | struct frr_pthread_attr pattr = { |
2726 | .start = frr_pthread_attr_default.start, | |
2727 | .stop = frr_pthread_attr_default.stop | |
2728 | }; | |
2729 | ||
2730 | zdplane_info.dg_pthread = frr_pthread_new(&pattr, "Zebra dplane thread", | |
2731 | "Zebra dplane"); | |
2732 | ||
2733 | zdplane_info.dg_master = zdplane_info.dg_pthread->master; | |
2734 | ||
e5a60d82 MS |
2735 | zdplane_info.dg_run = true; |
2736 | ||
c831033f MS |
2737 | /* Enqueue an initial event for the dataplane pthread */ |
2738 | thread_add_event(zdplane_info.dg_master, dplane_thread_loop, NULL, 0, | |
2739 | &zdplane_info.dg_t_update); | |
2740 | ||
2741 | frr_pthread_run(zdplane_info.dg_pthread, NULL); | |
18c37974 MS |
2742 | } |
2743 | ||
7cdb1a84 | 2744 | /* |
b8e0423d | 2745 | * Initialize the dataplane module at startup; called by zebra rib_init() |
7cdb1a84 | 2746 | */ |
4c206c8f | 2747 | void zebra_dplane_init(int (*results_fp)(struct dplane_ctx_q *)) |
7cdb1a84 | 2748 | { |
2561d12e | 2749 | zebra_dplane_init_internal(); |
4c206c8f | 2750 | zdplane_info.dg_results_cb = results_fp; |
7cdb1a84 | 2751 | } |