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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
d62a17ae | 2 | /* |
65efcfce LB |
3 | * |
4 | * Copyright 2009-2016, LabN Consulting, L.L.C. | |
5 | * | |
65efcfce LB |
6 | */ |
7 | ||
8 | /* | |
9 | * File: rfapi_monitor.c | |
10 | */ | |
11 | ||
12 | /* TBD remove unneeded includes */ | |
13 | ||
f8b6f499 LB |
14 | #include "lib/zebra.h" |
15 | #include "lib/prefix.h" | |
fe08ba7e | 16 | #include "lib/agg_table.h" |
f8b6f499 LB |
17 | #include "lib/vty.h" |
18 | #include "lib/memory.h" | |
19 | #include "lib/log.h" | |
20 | #include "lib/table.h" | |
21 | #include "lib/skiplist.h" | |
22 | ||
23 | #include "bgpd/bgpd.h" | |
24 | ||
25 | #include "bgpd/rfapi/bgp_rfapi_cfg.h" | |
26 | #include "bgpd/rfapi/rfapi.h" | |
27 | #include "bgpd/rfapi/rfapi_backend.h" | |
28 | ||
29 | #include "bgpd/rfapi/rfapi.h" | |
30 | #include "bgpd/rfapi/rfapi_import.h" | |
31 | #include "bgpd/rfapi/vnc_import_bgp.h" | |
32 | #include "bgpd/rfapi/rfapi_private.h" | |
33 | #include "bgpd/rfapi/rfapi_monitor.h" | |
34 | #include "bgpd/rfapi/rfapi_vty.h" | |
35 | #include "bgpd/rfapi/rfapi_rib.h" | |
a3b55c25 | 36 | #include "bgpd/rfapi/vnc_debug.h" |
65efcfce LB |
37 | |
38 | #define DEBUG_L2_EXTRA 0 | |
39 | #define DEBUG_DUP_CHECK 0 | |
40 | #define DEBUG_ETH_SL 0 | |
41 | ||
d62a17ae | 42 | static void rfapiMonitorTimerRestart(struct rfapi_monitor_vpn *m); |
65efcfce | 43 | |
d62a17ae | 44 | static void rfapiMonitorEthTimerRestart(struct rfapi_monitor_eth *m); |
65efcfce LB |
45 | |
46 | /* | |
47 | * Forward declarations | |
48 | */ | |
d62a17ae | 49 | static void rfapiMonitorEthDetachImport(struct bgp *bgp, |
50 | struct rfapi_monitor_eth *mon); | |
65efcfce LB |
51 | |
52 | #if DEBUG_ETH_SL | |
53 | /* | |
54 | * Debug function, special case | |
55 | */ | |
fe08ba7e | 56 | void rfapiMonitorEthSlCheck(struct agg_node *rn, const char *tag1, |
d62a17ae | 57 | const char *tag2) |
65efcfce | 58 | { |
fe08ba7e | 59 | struct agg_node *rn_saved = NULL; |
d62a17ae | 60 | static struct skiplist *sl_saved = NULL; |
61 | struct skiplist *sl; | |
62 | ||
63 | if (!rn) | |
64 | return; | |
65 | ||
66 | if (rn_saved && (rn != rn_saved)) | |
67 | return; | |
68 | ||
69 | if (!rn_saved) | |
70 | rn_saved = rn; | |
71 | ||
72 | sl = RFAPI_MONITOR_ETH(rn); | |
73 | if (sl || sl_saved) { | |
74 | vnc_zlog_debug_verbose( | |
75 | "%s[%s%s]: rn=%p, rn->lock=%d, old sl=%p, new sl=%p", | |
76 | __func__, (tag1 ? tag1 : ""), (tag2 ? tag2 : ""), rn, | |
77 | rn->lock, sl_saved, sl); | |
78 | sl_saved = sl; | |
79 | } | |
65efcfce LB |
80 | } |
81 | #endif | |
82 | ||
83 | /* | |
84 | * Debugging function that aborts when it finds monitors whose | |
85 | * "next" pointer * references themselves | |
86 | */ | |
d62a17ae | 87 | void rfapiMonitorLoopCheck(struct rfapi_monitor_vpn *mchain) |
65efcfce | 88 | { |
d62a17ae | 89 | struct rfapi_monitor_vpn *m; |
65efcfce | 90 | |
d62a17ae | 91 | for (m = mchain; m; m = m->next) |
92 | assert(m != m->next); | |
65efcfce LB |
93 | } |
94 | ||
95 | #if DEBUG_DUP_CHECK | |
96 | /* | |
97 | * Debugging code: see if a monitor is mentioned more than once | |
98 | * in a HD's monitor list | |
99 | */ | |
d62a17ae | 100 | void rfapiMonitorDupCheck(struct bgp *bgp) |
65efcfce | 101 | { |
d62a17ae | 102 | struct listnode *hnode; |
103 | struct rfapi_descriptor *rfd; | |
104 | ||
105 | for (ALL_LIST_ELEMENTS_RO(&bgp->rfapi->descriptors, hnode, rfd)) { | |
fe08ba7e | 106 | struct agg_node *mrn; |
d62a17ae | 107 | |
108 | if (!rfd->mon) | |
109 | continue; | |
110 | ||
fe08ba7e DS |
111 | for (mrn = agg_route_top(rfd->mon); mrn; |
112 | mrn = agg_route_next(mrn)) { | |
d62a17ae | 113 | struct rfapi_monitor_vpn *m; |
114 | for (m = (struct rfapi_monitor_vpn *)(mrn->info); m; | |
115 | m = m->next) | |
116 | m->dcount = 0; | |
117 | } | |
118 | } | |
119 | ||
120 | for (ALL_LIST_ELEMENTS_RO(&bgp->rfapi->descriptors, hnode, rfd)) { | |
fe08ba7e | 121 | struct agg_node *mrn; |
d62a17ae | 122 | |
123 | if (!rfd->mon) | |
124 | continue; | |
125 | ||
fe08ba7e DS |
126 | for (mrn = agg_route_top(rfd->mon); mrn; |
127 | mrn = agg_route_next(mrn)) { | |
d62a17ae | 128 | struct rfapi_monitor_vpn *m; |
129 | ||
130 | for (m = (struct rfapi_monitor_vpn *)(mrn->info); m; | |
131 | m = m->next) | |
132 | assert(++m->dcount == 1); | |
133 | } | |
134 | } | |
65efcfce LB |
135 | } |
136 | #endif | |
137 | ||
138 | /* debug */ | |
d62a17ae | 139 | void rfapiMonitorCleanCheck(struct bgp *bgp) |
65efcfce | 140 | { |
d62a17ae | 141 | struct listnode *hnode; |
142 | struct rfapi_descriptor *rfd; | |
65efcfce | 143 | |
d62a17ae | 144 | for (ALL_LIST_ELEMENTS_RO(&bgp->rfapi->descriptors, hnode, rfd)) { |
145 | assert(!rfd->import_table->vpn0_queries[AFI_IP]); | |
146 | assert(!rfd->import_table->vpn0_queries[AFI_IP6]); | |
65efcfce | 147 | |
fe08ba7e | 148 | struct agg_node *rn; |
65efcfce | 149 | |
fe08ba7e DS |
150 | for (rn = agg_route_top( |
151 | rfd->import_table->imported_vpn[AFI_IP]); | |
152 | rn; rn = agg_route_next(rn)) { | |
65efcfce | 153 | |
d62a17ae | 154 | assert(!RFAPI_MONITOR_VPN(rn)); |
155 | } | |
fe08ba7e DS |
156 | for (rn = agg_route_top( |
157 | rfd->import_table->imported_vpn[AFI_IP6]); | |
158 | rn; rn = agg_route_next(rn)) { | |
65efcfce | 159 | |
d62a17ae | 160 | assert(!RFAPI_MONITOR_VPN(rn)); |
161 | } | |
162 | } | |
65efcfce LB |
163 | } |
164 | ||
165 | /* debug */ | |
d62a17ae | 166 | void rfapiMonitorCheckAttachAllowed(void) |
65efcfce | 167 | { |
d62a17ae | 168 | struct bgp *bgp = bgp_get_default(); |
169 | assert(!(bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_CALLBACK_DISABLE)); | |
65efcfce LB |
170 | } |
171 | ||
fe08ba7e | 172 | void rfapiMonitorExtraFlush(safi_t safi, struct agg_node *rn) |
65efcfce | 173 | { |
d62a17ae | 174 | struct rfapi_it_extra *hie; |
175 | struct rfapi_monitor_vpn *v; | |
176 | struct rfapi_monitor_vpn *v_next; | |
177 | struct rfapi_monitor_encap *e = NULL; | |
178 | struct rfapi_monitor_encap *e_next = NULL; | |
179 | ||
180 | if (!rn) | |
181 | return; | |
182 | ||
183 | if (!rn->aggregate) | |
184 | return; | |
185 | ||
186 | hie = (struct rfapi_it_extra *)(rn->aggregate); | |
187 | ||
188 | switch (safi) { | |
189 | case SAFI_ENCAP: | |
190 | for (e = hie->u.encap.e; e; e = e_next) { | |
191 | e_next = e->next; | |
192 | e->next = NULL; | |
193 | XFREE(MTYPE_RFAPI_MONITOR_ENCAP, e); | |
fe08ba7e | 194 | agg_unlock_node(rn); |
d62a17ae | 195 | } |
196 | hie->u.encap.e = NULL; | |
197 | break; | |
198 | ||
199 | case SAFI_MPLS_VPN: | |
200 | for (v = hie->u.vpn.v; v; v = v_next) { | |
201 | v_next = v->next; | |
202 | v->next = NULL; | |
203 | XFREE(MTYPE_RFAPI_MONITOR, e); | |
fe08ba7e | 204 | agg_unlock_node(rn); |
d62a17ae | 205 | } |
206 | hie->u.vpn.v = NULL; | |
207 | if (hie->u.vpn.e.source) { | |
208 | while (!skiplist_delete_first(hie->u.vpn.e.source)) { | |
fe08ba7e | 209 | agg_unlock_node(rn); |
d62a17ae | 210 | } |
211 | skiplist_free(hie->u.vpn.e.source); | |
212 | hie->u.vpn.e.source = NULL; | |
fe08ba7e | 213 | agg_unlock_node(rn); |
d62a17ae | 214 | } |
215 | if (hie->u.vpn.idx_rd) { | |
40381db7 | 216 | /* looping through bpi->extra->vnc.import.rd is tbd */ |
d62a17ae | 217 | while (!skiplist_delete_first(hie->u.vpn.idx_rd)) { |
fe08ba7e | 218 | agg_unlock_node(rn); |
d62a17ae | 219 | } |
220 | skiplist_free(hie->u.vpn.idx_rd); | |
221 | hie->u.vpn.idx_rd = NULL; | |
fe08ba7e | 222 | agg_unlock_node(rn); |
d62a17ae | 223 | } |
224 | if (hie->u.vpn.mon_eth) { | |
225 | while (!skiplist_delete_first(hie->u.vpn.mon_eth)) { | |
fe08ba7e | 226 | agg_unlock_node(rn); |
d62a17ae | 227 | } |
228 | skiplist_free(hie->u.vpn.mon_eth); | |
229 | hie->u.vpn.mon_eth = NULL; | |
fe08ba7e | 230 | agg_unlock_node(rn); |
d62a17ae | 231 | } |
232 | break; | |
233 | ||
58cf0823 DS |
234 | case SAFI_UNSPEC: |
235 | case SAFI_UNICAST: | |
236 | case SAFI_MULTICAST: | |
237 | case SAFI_EVPN: | |
238 | case SAFI_LABELED_UNICAST: | |
239 | case SAFI_FLOWSPEC: | |
240 | case SAFI_MAX: | |
d62a17ae | 241 | assert(0); |
242 | } | |
243 | XFREE(MTYPE_RFAPI_IT_EXTRA, hie); | |
244 | rn->aggregate = NULL; | |
fe08ba7e | 245 | agg_unlock_node(rn); |
65efcfce LB |
246 | } |
247 | ||
248 | /* | |
249 | * If the child lists are empty, release the rfapi_it_extra struct | |
250 | */ | |
fe08ba7e | 251 | void rfapiMonitorExtraPrune(safi_t safi, struct agg_node *rn) |
65efcfce | 252 | { |
d62a17ae | 253 | struct rfapi_it_extra *hie; |
254 | ||
255 | if (!rn) | |
256 | return; | |
257 | ||
258 | if (!rn->aggregate) | |
259 | return; | |
260 | ||
261 | hie = (struct rfapi_it_extra *)(rn->aggregate); | |
262 | ||
263 | switch (safi) { | |
264 | case SAFI_ENCAP: | |
265 | if (hie->u.encap.e) | |
266 | return; | |
267 | break; | |
268 | ||
269 | case SAFI_MPLS_VPN: | |
270 | if (hie->u.vpn.v) | |
271 | return; | |
272 | if (hie->u.vpn.mon_eth) { | |
273 | if (skiplist_count(hie->u.vpn.mon_eth)) | |
274 | return; | |
275 | skiplist_free(hie->u.vpn.mon_eth); | |
276 | hie->u.vpn.mon_eth = NULL; | |
fe08ba7e | 277 | agg_unlock_node(rn); /* uncount skiplist */ |
d62a17ae | 278 | } |
279 | if (hie->u.vpn.e.source) { | |
280 | if (skiplist_count(hie->u.vpn.e.source)) | |
281 | return; | |
282 | skiplist_free(hie->u.vpn.e.source); | |
283 | hie->u.vpn.e.source = NULL; | |
fe08ba7e | 284 | agg_unlock_node(rn); |
d62a17ae | 285 | } |
286 | if (hie->u.vpn.idx_rd) { | |
287 | if (skiplist_count(hie->u.vpn.idx_rd)) | |
288 | return; | |
289 | skiplist_free(hie->u.vpn.idx_rd); | |
290 | hie->u.vpn.idx_rd = NULL; | |
fe08ba7e | 291 | agg_unlock_node(rn); |
d62a17ae | 292 | } |
293 | if (hie->u.vpn.mon_eth) { | |
294 | if (skiplist_count(hie->u.vpn.mon_eth)) | |
295 | return; | |
296 | skiplist_free(hie->u.vpn.mon_eth); | |
297 | hie->u.vpn.mon_eth = NULL; | |
fe08ba7e | 298 | agg_unlock_node(rn); |
d62a17ae | 299 | } |
300 | break; | |
301 | ||
58cf0823 DS |
302 | case SAFI_UNSPEC: |
303 | case SAFI_UNICAST: | |
304 | case SAFI_MULTICAST: | |
305 | case SAFI_EVPN: | |
306 | case SAFI_LABELED_UNICAST: | |
307 | case SAFI_FLOWSPEC: | |
308 | case SAFI_MAX: | |
d62a17ae | 309 | assert(0); |
310 | } | |
311 | XFREE(MTYPE_RFAPI_IT_EXTRA, hie); | |
312 | rn->aggregate = NULL; | |
fe08ba7e | 313 | agg_unlock_node(rn); |
65efcfce LB |
314 | } |
315 | ||
316 | /* | |
317 | * returns locked node | |
318 | */ | |
fe08ba7e DS |
319 | struct agg_node *rfapiMonitorGetAttachNode(struct rfapi_descriptor *rfd, |
320 | struct prefix *p) | |
65efcfce | 321 | { |
d62a17ae | 322 | afi_t afi; |
fe08ba7e | 323 | struct agg_node *rn; |
d62a17ae | 324 | |
325 | if (RFAPI_0_PREFIX(p)) { | |
326 | assert(1); | |
327 | } | |
328 | ||
329 | afi = family2afi(p->family); | |
330 | assert(afi); | |
331 | ||
332 | /* | |
333 | * It's possible that even though there is a route at this node, | |
334 | * there are no routes with valid UN addresses (i.e,. with no | |
335 | * valid tunnel routes). Check for that and walk back up the | |
336 | * tree if necessary. | |
337 | * | |
338 | * When the outer loop completes, the matched node, if any, is | |
339 | * locked (i.e., its reference count has been incremented) to | |
340 | * account for the VPN monitor we are about to attach. | |
341 | * | |
342 | * if a monitor is moved to another node, there must be | |
343 | * corresponding unlock/locks | |
344 | */ | |
fe08ba7e | 345 | for (rn = agg_node_match(rfd->import_table->imported_vpn[afi], p); |
d62a17ae | 346 | rn;) { |
347 | ||
40381db7 | 348 | struct bgp_path_info *bpi; |
d62a17ae | 349 | struct prefix pfx_dummy; |
350 | ||
351 | /* TBD update this code to use new valid_interior_count */ | |
40381db7 | 352 | for (bpi = rn->info; bpi; bpi = bpi->next) { |
d62a17ae | 353 | /* |
354 | * If there is a cached ENCAP UN address, it's a usable | |
355 | * VPN route | |
356 | */ | |
40381db7 | 357 | if (bpi->extra && bpi->extra->vnc.import.un_family) { |
d62a17ae | 358 | break; |
359 | } | |
360 | ||
361 | /* | |
362 | * Or if there is a valid Encap Attribute tunnel subtlv | |
363 | * address, | |
364 | * it's a usable VPN route. | |
365 | */ | |
40381db7 | 366 | if (!rfapiGetVncTunnelUnAddr(bpi->attr, &pfx_dummy)) { |
d62a17ae | 367 | break; |
368 | } | |
369 | } | |
40381db7 | 370 | if (bpi) |
d62a17ae | 371 | break; |
372 | ||
fe08ba7e DS |
373 | agg_unlock_node(rn); |
374 | if ((rn = agg_node_parent(rn))) { | |
375 | agg_lock_node(rn); | |
d62a17ae | 376 | } |
377 | } | |
378 | ||
379 | if (!rn) { | |
380 | struct prefix pfx_default; | |
381 | ||
382 | memset(&pfx_default, 0, sizeof(pfx_default)); | |
383 | pfx_default.family = p->family; | |
384 | ||
385 | /* creates default node if none exists, and increments ref count | |
386 | */ | |
fe08ba7e DS |
387 | rn = agg_node_get(rfd->import_table->imported_vpn[afi], |
388 | &pfx_default); | |
d62a17ae | 389 | } |
390 | ||
391 | return rn; | |
65efcfce LB |
392 | } |
393 | ||
d62a17ae | 394 | /* |
65efcfce LB |
395 | * If this function happens to attach the monitor to a radix tree |
396 | * node (as opposed to the 0-prefix list), the node pointer is | |
397 | * returned (for the benefit of caller which might like to use it | |
398 | * to generate an immediate query response). | |
399 | */ | |
fe08ba7e DS |
400 | static struct agg_node *rfapiMonitorAttachImport(struct rfapi_descriptor *rfd, |
401 | struct rfapi_monitor_vpn *m) | |
65efcfce | 402 | { |
fe08ba7e | 403 | struct agg_node *rn; |
d62a17ae | 404 | |
405 | rfapiMonitorCheckAttachAllowed(); | |
406 | ||
407 | if (RFAPI_0_PREFIX(&m->p)) { | |
408 | /* | |
409 | * Add new monitor entry to vpn0 list | |
410 | */ | |
411 | afi_t afi; | |
412 | ||
413 | afi = family2afi(m->p.family); | |
414 | assert(afi); | |
415 | ||
416 | m->next = rfd->import_table->vpn0_queries[afi]; | |
417 | rfd->import_table->vpn0_queries[afi] = m; | |
418 | vnc_zlog_debug_verbose("%s: attached monitor %p to vpn0 list", | |
419 | __func__, m); | |
420 | return NULL; | |
421 | } | |
422 | ||
423 | /* | |
424 | * Attach new monitor entry to import table node | |
425 | */ | |
426 | rn = rfapiMonitorGetAttachNode(rfd, &m->p); /* returns locked rn */ | |
427 | m->node = rn; | |
428 | m->next = RFAPI_MONITOR_VPN(rn); | |
429 | RFAPI_MONITOR_VPN_W_ALLOC(rn) = m; | |
430 | RFAPI_CHECK_REFCOUNT(rn, SAFI_MPLS_VPN, 0); | |
431 | vnc_zlog_debug_verbose("%s: attached monitor %p to rn %p", __func__, m, | |
432 | rn); | |
433 | return rn; | |
65efcfce LB |
434 | } |
435 | ||
436 | ||
437 | /* | |
438 | * reattach monitors for this HD to import table | |
439 | */ | |
d62a17ae | 440 | void rfapiMonitorAttachImportHd(struct rfapi_descriptor *rfd) |
65efcfce | 441 | { |
fe08ba7e | 442 | struct agg_node *mrn; |
d62a17ae | 443 | |
444 | if (!rfd->mon) { | |
445 | /* | |
446 | * No monitors for this HD | |
447 | */ | |
448 | return; | |
449 | } | |
450 | ||
fe08ba7e | 451 | for (mrn = agg_route_top(rfd->mon); mrn; mrn = agg_route_next(mrn)) { |
d62a17ae | 452 | |
453 | if (!mrn->info) | |
454 | continue; | |
455 | ||
456 | (void)rfapiMonitorAttachImport( | |
457 | rfd, (struct rfapi_monitor_vpn *)(mrn->info)); | |
458 | } | |
65efcfce LB |
459 | } |
460 | ||
461 | /* | |
462 | * Adds a monitor for a query to the NVE descriptor's list | |
463 | * and, if callbacks are enabled, attaches it to the import table. | |
464 | * | |
465 | * If we happened to locate the import table radix tree attachment | |
466 | * point, return it so the caller can use it to generate a query | |
467 | * response without repeating the lookup. Note that when callbacks | |
468 | * are disabled, this function will not perform a lookup, and the | |
469 | * caller will have to do its own lookup. | |
470 | */ | |
fe08ba7e DS |
471 | struct agg_node *rfapiMonitorAdd(struct bgp *bgp, struct rfapi_descriptor *rfd, |
472 | struct prefix *p) | |
65efcfce | 473 | { |
d62a17ae | 474 | struct rfapi_monitor_vpn *m; |
fe08ba7e | 475 | struct agg_node *rn; |
d62a17ae | 476 | |
477 | /* | |
478 | * Initialize nve's monitor list if needed | |
479 | * NB use the same radix tree for IPv4 and IPv6 targets. | |
480 | * The prefix will always have full-length mask (/32, /128) | |
481 | * or be 0/0 so they won't get mixed up. | |
482 | */ | |
483 | if (!rfd->mon) { | |
fe08ba7e | 484 | rfd->mon = agg_table_init(); |
d62a17ae | 485 | } |
fe08ba7e | 486 | rn = agg_node_get(rfd->mon, p); |
d62a17ae | 487 | if (rn->info) { |
488 | /* | |
489 | * received this query before, no further action needed | |
490 | */ | |
491 | rfapiMonitorTimerRestart((struct rfapi_monitor_vpn *)rn->info); | |
fe08ba7e | 492 | agg_unlock_node(rn); |
d62a17ae | 493 | return NULL; |
494 | } | |
495 | ||
496 | /* | |
497 | * New query for this nve, record it in the HD | |
498 | */ | |
499 | rn->info = | |
500 | XCALLOC(MTYPE_RFAPI_MONITOR, sizeof(struct rfapi_monitor_vpn)); | |
501 | m = (struct rfapi_monitor_vpn *)(rn->info); | |
502 | m->rfd = rfd; | |
503 | prefix_copy(&m->p, p); | |
504 | ||
505 | ++rfd->monitor_count; | |
506 | ++bgp->rfapi->monitor_count; | |
507 | ||
508 | rfapiMonitorTimerRestart(m); | |
509 | ||
510 | if (bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_CALLBACK_DISABLE) { | |
511 | /* | |
512 | * callbacks turned off, so don't attach monitor to import table | |
513 | */ | |
514 | return NULL; | |
515 | } | |
516 | ||
517 | ||
518 | /* | |
519 | * attach to import table | |
520 | */ | |
521 | return rfapiMonitorAttachImport(rfd, m); | |
65efcfce LB |
522 | } |
523 | ||
524 | /* | |
525 | * returns monitor pointer if found, NULL if not | |
526 | */ | |
527 | static struct rfapi_monitor_vpn * | |
d62a17ae | 528 | rfapiMonitorDetachImport(struct rfapi_monitor_vpn *m) |
65efcfce | 529 | { |
d62a17ae | 530 | struct rfapi_monitor_vpn *prev; |
531 | struct rfapi_monitor_vpn *this = NULL; | |
532 | ||
533 | if (RFAPI_0_PREFIX(&m->p)) { | |
534 | afi_t afi; | |
535 | ||
536 | /* | |
537 | * 0-prefix monitors are stored in a special list and not | |
538 | * in the import VPN tree | |
539 | */ | |
540 | ||
541 | afi = family2afi(m->p.family); | |
542 | assert(afi); | |
543 | ||
544 | if (m->rfd->import_table) { | |
545 | for (prev = NULL, | |
546 | this = m->rfd->import_table->vpn0_queries[afi]; | |
547 | this; prev = this, this = this->next) { | |
548 | ||
549 | if (this == m) | |
550 | break; | |
551 | } | |
552 | if (this) { | |
553 | if (!prev) { | |
554 | m->rfd->import_table | |
555 | ->vpn0_queries[afi] = | |
556 | this->next; | |
557 | } else { | |
558 | prev->next = this->next; | |
559 | } | |
560 | } | |
561 | } | |
562 | } else { | |
563 | ||
564 | if (m->node) { | |
565 | for (prev = NULL, this = RFAPI_MONITOR_VPN(m->node); | |
566 | this; prev = this, this = this->next) { | |
567 | ||
568 | if (this == m) | |
569 | break; | |
570 | } | |
571 | if (this) { | |
572 | if (prev) { | |
573 | prev->next = this->next; | |
574 | } else { | |
575 | RFAPI_MONITOR_VPN_W_ALLOC(m->node) = | |
576 | this->next; | |
577 | } | |
578 | RFAPI_CHECK_REFCOUNT(m->node, SAFI_MPLS_VPN, 1); | |
fe08ba7e | 579 | agg_unlock_node(m->node); |
d62a17ae | 580 | } |
581 | m->node = NULL; | |
582 | } | |
583 | } | |
584 | return this; | |
65efcfce LB |
585 | } |
586 | ||
587 | ||
d62a17ae | 588 | void rfapiMonitorDetachImportHd(struct rfapi_descriptor *rfd) |
65efcfce | 589 | { |
fe08ba7e | 590 | struct agg_node *rn; |
d62a17ae | 591 | |
592 | if (!rfd->mon) | |
593 | return; | |
594 | ||
fe08ba7e | 595 | for (rn = agg_route_top(rfd->mon); rn; rn = agg_route_next(rn)) { |
d62a17ae | 596 | if (rn->info) { |
597 | rfapiMonitorDetachImport( | |
598 | (struct rfapi_monitor_vpn *)(rn->info)); | |
599 | } | |
600 | } | |
65efcfce LB |
601 | } |
602 | ||
d62a17ae | 603 | void rfapiMonitorDel(struct bgp *bgp, struct rfapi_descriptor *rfd, |
604 | struct prefix *p) | |
65efcfce | 605 | { |
fe08ba7e | 606 | struct agg_node *rn; |
d62a17ae | 607 | struct rfapi_monitor_vpn *m; |
608 | ||
609 | assert(rfd->mon); | |
fe08ba7e | 610 | rn = agg_node_get(rfd->mon, p); /* locks node */ |
d62a17ae | 611 | m = rn->info; |
612 | ||
613 | assert(m); | |
614 | ||
615 | /* | |
616 | * remove from import table | |
617 | */ | |
618 | if (!(bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_CALLBACK_DISABLE)) { | |
619 | rfapiMonitorDetachImport(m); | |
620 | } | |
621 | ||
c3aaa89a | 622 | THREAD_OFF(m->timer); |
d62a17ae | 623 | |
624 | /* | |
625 | * remove from rfd list | |
626 | */ | |
627 | XFREE(MTYPE_RFAPI_MONITOR, m); | |
628 | rn->info = NULL; | |
fe08ba7e DS |
629 | agg_unlock_node(rn); /* undo original lock when created */ |
630 | agg_unlock_node(rn); /* undo lock in agg_node_get */ | |
d62a17ae | 631 | |
632 | --rfd->monitor_count; | |
633 | --bgp->rfapi->monitor_count; | |
65efcfce LB |
634 | } |
635 | ||
636 | /* | |
637 | * returns count of monitors deleted | |
638 | */ | |
d62a17ae | 639 | int rfapiMonitorDelHd(struct rfapi_descriptor *rfd) |
65efcfce | 640 | { |
fe08ba7e | 641 | struct agg_node *rn; |
d62a17ae | 642 | struct bgp *bgp; |
643 | int count = 0; | |
644 | ||
645 | vnc_zlog_debug_verbose("%s: entry rfd=%p", __func__, rfd); | |
646 | ||
647 | bgp = bgp_get_default(); | |
648 | ||
649 | if (rfd->mon) { | |
fe08ba7e DS |
650 | for (rn = agg_route_top(rfd->mon); rn; |
651 | rn = agg_route_next(rn)) { | |
d62a17ae | 652 | struct rfapi_monitor_vpn *m; |
653 | if ((m = rn->info)) { | |
654 | if (!(bgp->rfapi_cfg->flags | |
655 | & BGP_VNC_CONFIG_CALLBACK_DISABLE)) { | |
656 | rfapiMonitorDetachImport(m); | |
657 | } | |
658 | ||
c3aaa89a | 659 | THREAD_OFF(m->timer); |
d62a17ae | 660 | |
661 | XFREE(MTYPE_RFAPI_MONITOR, m); | |
662 | rn->info = NULL; | |
fe08ba7e | 663 | agg_unlock_node(rn); /* undo original lock |
d62a17ae | 664 | when created */ |
665 | ++count; | |
666 | --rfd->monitor_count; | |
667 | --bgp->rfapi->monitor_count; | |
668 | } | |
669 | } | |
fe08ba7e | 670 | agg_table_finish(rfd->mon); |
d62a17ae | 671 | rfd->mon = NULL; |
672 | } | |
673 | ||
674 | if (rfd->mon_eth) { | |
675 | ||
676 | struct rfapi_monitor_eth *mon_eth; | |
677 | ||
678 | while (!skiplist_first(rfd->mon_eth, NULL, (void **)&mon_eth)) { | |
679 | ||
680 | int rc; | |
681 | ||
682 | if (!(bgp->rfapi_cfg->flags | |
683 | & BGP_VNC_CONFIG_CALLBACK_DISABLE)) { | |
684 | rfapiMonitorEthDetachImport(bgp, mon_eth); | |
685 | } else { | |
65efcfce | 686 | #if DEBUG_L2_EXTRA |
d62a17ae | 687 | vnc_zlog_debug_verbose( |
688 | "%s: callbacks disabled, not attempting to detach mon_eth %p", | |
689 | __func__, mon_eth); | |
65efcfce | 690 | #endif |
d62a17ae | 691 | } |
692 | ||
c3aaa89a | 693 | THREAD_OFF(mon_eth->timer); |
d62a17ae | 694 | |
695 | /* | |
696 | * remove from rfd list | |
697 | */ | |
698 | rc = skiplist_delete(rfd->mon_eth, mon_eth, mon_eth); | |
699 | assert(!rc); | |
700 | ||
701 | vnc_zlog_debug_verbose("%s: freeing mon_eth %p", | |
702 | __func__, mon_eth); | |
703 | XFREE(MTYPE_RFAPI_MONITOR_ETH, mon_eth); | |
704 | ||
705 | ++count; | |
706 | --rfd->monitor_count; | |
707 | --bgp->rfapi->monitor_count; | |
708 | } | |
709 | skiplist_free(rfd->mon_eth); | |
710 | rfd->mon_eth = NULL; | |
711 | } | |
712 | ||
713 | return count; | |
65efcfce LB |
714 | } |
715 | ||
d62a17ae | 716 | void rfapiMonitorResponseRemovalOff(struct bgp *bgp) |
65efcfce | 717 | { |
d62a17ae | 718 | if (bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_RESPONSE_REMOVAL_DISABLE) { |
719 | return; | |
720 | } | |
721 | bgp->rfapi_cfg->flags |= BGP_VNC_CONFIG_RESPONSE_REMOVAL_DISABLE; | |
65efcfce LB |
722 | } |
723 | ||
d62a17ae | 724 | void rfapiMonitorResponseRemovalOn(struct bgp *bgp) |
65efcfce | 725 | { |
d62a17ae | 726 | if (!(bgp->rfapi_cfg->flags |
727 | & BGP_VNC_CONFIG_RESPONSE_REMOVAL_DISABLE)) { | |
728 | return; | |
729 | } | |
730 | bgp->rfapi_cfg->flags &= ~BGP_VNC_CONFIG_RESPONSE_REMOVAL_DISABLE; | |
65efcfce LB |
731 | } |
732 | ||
cc9f21da | 733 | static void rfapiMonitorTimerExpire(struct thread *t) |
65efcfce | 734 | { |
c3aaa89a | 735 | struct rfapi_monitor_vpn *m = THREAD_ARG(t); |
65efcfce | 736 | |
d62a17ae | 737 | /* forget reference to thread, it's gone */ |
738 | m->timer = NULL; | |
65efcfce | 739 | |
d62a17ae | 740 | /* delete the monitor */ |
741 | rfapiMonitorDel(bgp_get_default(), m->rfd, &m->p); | |
65efcfce LB |
742 | } |
743 | ||
d62a17ae | 744 | static void rfapiMonitorTimerRestart(struct rfapi_monitor_vpn *m) |
65efcfce | 745 | { |
1f37d8c2 | 746 | unsigned long remain = thread_timer_remain_second(m->timer); |
d62a17ae | 747 | |
1f37d8c2 DA |
748 | /* unexpected case, but avoid wraparound problems below */ |
749 | if (remain > m->rfd->response_lifetime) | |
750 | return; | |
d62a17ae | 751 | |
1f37d8c2 DA |
752 | /* don't restart if we just restarted recently */ |
753 | if (m->rfd->response_lifetime - remain < 2) | |
754 | return; | |
d62a17ae | 755 | |
1f37d8c2 | 756 | THREAD_OFF(m->timer); |
d62a17ae | 757 | |
758 | { | |
759 | char buf[BUFSIZ]; | |
760 | ||
761 | vnc_zlog_debug_verbose( | |
762 | "%s: target %s life %u", __func__, | |
763 | rfapi_ntop(m->p.family, m->p.u.val, buf, BUFSIZ), | |
764 | m->rfd->response_lifetime); | |
765 | } | |
1f37d8c2 | 766 | |
d62a17ae | 767 | thread_add_timer(bm->master, rfapiMonitorTimerExpire, m, |
768 | m->rfd->response_lifetime, &m->timer); | |
65efcfce LB |
769 | } |
770 | ||
d62a17ae | 771 | /* |
65efcfce LB |
772 | * called when an updated response is sent to the NVE. Per |
773 | * ticket 255, restart timers for any monitors that could have | |
774 | * been responsible for the response, i.e., any monitors for | |
775 | * the exact prefix or a parent of it. | |
776 | */ | |
26a3ffd6 DS |
777 | void rfapiMonitorTimersRestart(struct rfapi_descriptor *rfd, |
778 | const struct prefix *p) | |
65efcfce | 779 | { |
fe08ba7e | 780 | struct agg_node *rn; |
d62a17ae | 781 | |
782 | if (AF_ETHERNET == p->family) { | |
783 | struct rfapi_monitor_eth *mon_eth; | |
784 | int rc; | |
785 | void *cursor; | |
786 | ||
787 | /* | |
788 | * XXX match any LNI | |
789 | */ | |
790 | for (cursor = NULL, | |
791 | rc = skiplist_next(rfd->mon_eth, NULL, (void **)&mon_eth, | |
792 | &cursor); | |
793 | rc == 0; rc = skiplist_next(rfd->mon_eth, NULL, | |
794 | (void **)&mon_eth, &cursor)) { | |
795 | ||
796 | if (!memcmp(mon_eth->macaddr.octet, | |
28328ea9 | 797 | p->u.prefix_eth.octet, ETH_ALEN)) { |
d62a17ae | 798 | |
799 | rfapiMonitorEthTimerRestart(mon_eth); | |
800 | } | |
801 | } | |
802 | ||
803 | } else { | |
fe08ba7e DS |
804 | for (rn = agg_route_top(rfd->mon); rn; |
805 | rn = agg_route_next(rn)) { | |
d62a17ae | 806 | struct rfapi_monitor_vpn *m; |
26a3ffd6 | 807 | const struct prefix *p_node; |
d62a17ae | 808 | |
809 | if (!((m = rn->info))) | |
810 | continue; | |
811 | ||
26a3ffd6 | 812 | p_node = agg_node_get_prefix(m->node); |
d62a17ae | 813 | /* NB order of test is significant ! */ |
26a3ffd6 | 814 | if (!m->node || prefix_match(p_node, p)) { |
d62a17ae | 815 | rfapiMonitorTimerRestart(m); |
816 | } | |
817 | } | |
818 | } | |
65efcfce LB |
819 | } |
820 | ||
821 | /* | |
822 | * Find monitors at this node and all its parents. Call | |
823 | * rfapiRibUpdatePendingNode with this node and all corresponding NVEs. | |
824 | */ | |
d62a17ae | 825 | void rfapiMonitorItNodeChanged( |
fe08ba7e | 826 | struct rfapi_import_table *import_table, struct agg_node *it_node, |
d62a17ae | 827 | struct rfapi_monitor_vpn *monitor_list) /* for base it node, NULL=all */ |
65efcfce | 828 | { |
d62a17ae | 829 | struct skiplist *nves_seen; |
fe08ba7e | 830 | struct agg_node *rn = it_node; |
d62a17ae | 831 | struct bgp *bgp = bgp_get_default(); |
26a3ffd6 DS |
832 | const struct prefix *p = agg_node_get_prefix(rn); |
833 | afi_t afi = family2afi(p->family); | |
65efcfce | 834 | |
d62a17ae | 835 | assert(bgp); |
836 | assert(import_table); | |
65efcfce | 837 | |
d62a17ae | 838 | nves_seen = skiplist_new(0, NULL, NULL); |
65efcfce LB |
839 | |
840 | #if DEBUG_L2_EXTRA | |
2dbe669b DA |
841 | vnc_zlog_debug_verbose("%s: it=%p, it_node=%p, it_node->prefix=%pFX", |
842 | __func__, import_table, it_node, &it_node->p); | |
65efcfce LB |
843 | #endif |
844 | ||
d62a17ae | 845 | if (AFI_L2VPN == afi) { |
846 | struct rfapi_monitor_eth *m; | |
847 | struct skiplist *sl; | |
848 | void *cursor; | |
849 | int rc; | |
850 | ||
851 | if ((sl = RFAPI_MONITOR_ETH(rn))) { | |
852 | ||
853 | for (cursor = NULL, | |
c4efd0f4 | 854 | rc = skiplist_next(sl, NULL, (void **)&m, &cursor); |
d62a17ae | 855 | !rc; rc = skiplist_next(sl, NULL, (void **)&m, |
c4efd0f4 | 856 | &cursor)) { |
d62a17ae | 857 | |
858 | if (skiplist_search(nves_seen, m->rfd, NULL)) { | |
859 | /* | |
860 | * Haven't done this NVE yet. Add to | |
861 | * "seen" list. | |
862 | */ | |
863 | assert(!skiplist_insert(nves_seen, | |
864 | m->rfd, NULL)); | |
865 | ||
866 | /* | |
867 | * update its RIB | |
868 | */ | |
869 | rfapiRibUpdatePendingNode( | |
870 | bgp, m->rfd, import_table, | |
871 | it_node, | |
872 | m->rfd->response_lifetime); | |
873 | } | |
874 | } | |
875 | } | |
876 | ||
877 | } else { | |
878 | ||
879 | struct rfapi_monitor_vpn *m; | |
880 | ||
881 | if (monitor_list) { | |
882 | m = monitor_list; | |
883 | } else { | |
884 | m = RFAPI_MONITOR_VPN(rn); | |
885 | } | |
886 | ||
887 | do { | |
888 | /* | |
889 | * If we have reached the root node (parent==NULL) and | |
890 | * there | |
891 | * are no routes here (info==NULL), and the IT node that | |
892 | * changed was not the root node (it_node->parent != | |
893 | * NULL), | |
894 | * then any monitors at this node are here because they | |
895 | * had | |
896 | * no match at all. Therefore, do not send route updates | |
897 | * to them | |
898 | * because we haven't sent them an initial route. | |
899 | */ | |
fe08ba7e DS |
900 | if (!agg_node_parent(rn) && !rn->info |
901 | && it_node->parent) | |
d62a17ae | 902 | break; |
903 | ||
904 | for (; m; m = m->next) { | |
905 | ||
906 | if (RFAPI_0_PREFIX(&m->p)) { | |
907 | /* shouldn't happen, but be safe */ | |
908 | continue; | |
909 | } | |
910 | if (skiplist_search(nves_seen, m->rfd, NULL)) { | |
911 | /* | |
912 | * Haven't done this NVE yet. Add to | |
913 | * "seen" list. | |
914 | */ | |
915 | assert(!skiplist_insert(nves_seen, | |
916 | m->rfd, NULL)); | |
917 | ||
872ed4c7 | 918 | vnc_zlog_debug_verbose( |
2dbe669b | 919 | "%s: update rfd %p attached to pfx %pRN (targ=%pFX)", |
26a3ffd6 | 920 | __func__, m->rfd, m->node, |
2dbe669b | 921 | &m->p); |
d62a17ae | 922 | |
923 | /* | |
924 | * update its RIB | |
925 | */ | |
926 | rfapiRibUpdatePendingNode( | |
927 | bgp, m->rfd, import_table, | |
928 | it_node, | |
929 | m->rfd->response_lifetime); | |
930 | } | |
931 | } | |
fe08ba7e | 932 | rn = agg_node_parent(rn); |
d62a17ae | 933 | if (rn) |
934 | m = RFAPI_MONITOR_VPN(rn); | |
935 | } while (rn); | |
936 | } | |
937 | ||
938 | /* | |
939 | * All-routes L2 monitors | |
940 | */ | |
941 | if (AFI_L2VPN == afi) { | |
942 | struct rfapi_monitor_eth *e; | |
65efcfce LB |
943 | |
944 | #if DEBUG_L2_EXTRA | |
d62a17ae | 945 | vnc_zlog_debug_verbose("%s: checking L2 all-routes monitors", |
946 | __func__); | |
65efcfce LB |
947 | #endif |
948 | ||
d62a17ae | 949 | for (e = import_table->eth0_queries; e; e = e->next) { |
65efcfce | 950 | #if DEBUG_L2_EXTRA |
d62a17ae | 951 | vnc_zlog_debug_verbose("%s: checking eth0 mon=%p", |
952 | __func__, e); | |
65efcfce | 953 | #endif |
d62a17ae | 954 | if (skiplist_search(nves_seen, e->rfd, NULL)) { |
955 | /* | |
956 | * Haven't done this NVE yet. Add to "seen" | |
957 | * list. | |
958 | */ | |
959 | assert(!skiplist_insert(nves_seen, e->rfd, | |
960 | NULL)); | |
961 | ||
962 | /* | |
963 | * update its RIB | |
964 | */ | |
65efcfce | 965 | #if DEBUG_L2_EXTRA |
d62a17ae | 966 | vnc_zlog_debug_verbose( |
967 | "%s: found L2 all-routes monitor %p", | |
968 | __func__, e); | |
65efcfce | 969 | #endif |
d62a17ae | 970 | rfapiRibUpdatePendingNode( |
971 | bgp, e->rfd, import_table, it_node, | |
972 | e->rfd->response_lifetime); | |
973 | } | |
974 | } | |
975 | } else { | |
976 | struct rfapi_monitor_vpn *m; | |
977 | ||
978 | /* | |
979 | * All-routes IPv4. IPv6 monitors | |
980 | */ | |
981 | for (m = import_table->vpn0_queries[afi]; m; m = m->next) { | |
982 | if (skiplist_search(nves_seen, m->rfd, NULL)) { | |
983 | /* | |
984 | * Haven't done this NVE yet. Add to "seen" | |
985 | * list. | |
986 | */ | |
987 | assert(!skiplist_insert(nves_seen, m->rfd, | |
988 | NULL)); | |
989 | ||
990 | /* | |
991 | * update its RIB | |
992 | */ | |
993 | rfapiRibUpdatePendingNode( | |
994 | bgp, m->rfd, import_table, it_node, | |
995 | m->rfd->response_lifetime); | |
996 | } | |
997 | } | |
998 | } | |
999 | ||
1000 | skiplist_free(nves_seen); | |
65efcfce LB |
1001 | } |
1002 | ||
1003 | /* | |
1004 | * For the listed monitors, update new node and its subtree, but | |
1005 | * omit old node and its subtree | |
1006 | */ | |
d62a17ae | 1007 | void rfapiMonitorMovedUp(struct rfapi_import_table *import_table, |
fe08ba7e | 1008 | struct agg_node *old_node, struct agg_node *new_node, |
d62a17ae | 1009 | struct rfapi_monitor_vpn *monitor_list) |
65efcfce | 1010 | { |
d62a17ae | 1011 | struct bgp *bgp = bgp_get_default(); |
1012 | struct rfapi_monitor_vpn *m; | |
1013 | ||
1014 | assert(new_node); | |
1015 | assert(old_node); | |
1016 | assert(new_node != old_node); | |
1017 | ||
1018 | /* | |
1019 | * If new node is 0/0 and there is no route there, don't | |
1020 | * generate an update because it will not contain any | |
1021 | * routes including the target. | |
1022 | */ | |
1023 | if (!new_node->parent && !new_node->info) { | |
1024 | vnc_zlog_debug_verbose( | |
1025 | "%s: new monitor at 0/0 and no routes, no updates", | |
1026 | __func__); | |
1027 | return; | |
1028 | } | |
1029 | ||
1030 | for (m = monitor_list; m; m = m->next) { | |
1031 | rfapiRibUpdatePendingNode(bgp, m->rfd, import_table, new_node, | |
1032 | m->rfd->response_lifetime); | |
1033 | rfapiRibUpdatePendingNodeSubtree(bgp, m->rfd, import_table, | |
1034 | new_node, old_node, | |
1035 | m->rfd->response_lifetime); | |
1036 | } | |
65efcfce LB |
1037 | } |
1038 | ||
cc9f21da | 1039 | static void rfapiMonitorEthTimerExpire(struct thread *t) |
65efcfce | 1040 | { |
c3aaa89a | 1041 | struct rfapi_monitor_eth *m = THREAD_ARG(t); |
65efcfce | 1042 | |
d62a17ae | 1043 | /* forget reference to thread, it's gone */ |
1044 | m->timer = NULL; | |
65efcfce | 1045 | |
d62a17ae | 1046 | /* delete the monitor */ |
1047 | rfapiMonitorEthDel(bgp_get_default(), m->rfd, &m->macaddr, | |
1048 | m->logical_net_id); | |
65efcfce | 1049 | |
65efcfce LB |
1050 | } |
1051 | ||
d62a17ae | 1052 | static void rfapiMonitorEthTimerRestart(struct rfapi_monitor_eth *m) |
65efcfce | 1053 | { |
1f37d8c2 | 1054 | unsigned long remain = thread_timer_remain_second(m->timer); |
d62a17ae | 1055 | |
1f37d8c2 DA |
1056 | /* unexpected case, but avoid wraparound problems below */ |
1057 | if (remain > m->rfd->response_lifetime) | |
1058 | return; | |
d62a17ae | 1059 | |
1f37d8c2 DA |
1060 | /* don't restart if we just restarted recently */ |
1061 | if (m->rfd->response_lifetime - remain < 2) | |
1062 | return; | |
d62a17ae | 1063 | |
1f37d8c2 | 1064 | THREAD_OFF(m->timer); |
d62a17ae | 1065 | |
1066 | { | |
1067 | char buf[BUFSIZ]; | |
1068 | ||
1069 | vnc_zlog_debug_verbose( | |
1070 | "%s: target %s life %u", __func__, | |
1071 | rfapiEthAddr2Str(&m->macaddr, buf, BUFSIZ), | |
1072 | m->rfd->response_lifetime); | |
1073 | } | |
1f37d8c2 | 1074 | |
d62a17ae | 1075 | thread_add_timer(bm->master, rfapiMonitorEthTimerExpire, m, |
1076 | m->rfd->response_lifetime, &m->timer); | |
65efcfce LB |
1077 | } |
1078 | ||
1a4189d4 | 1079 | static int mon_eth_cmp(const void *a, const void *b) |
65efcfce | 1080 | { |
1a4189d4 DS |
1081 | const struct rfapi_monitor_eth *m1; |
1082 | const struct rfapi_monitor_eth *m2; | |
d62a17ae | 1083 | |
1084 | int i; | |
1085 | ||
1086 | m1 = (struct rfapi_monitor_eth *)a; | |
1087 | m2 = (struct rfapi_monitor_eth *)b; | |
1088 | ||
1089 | /* | |
1090 | * compare ethernet addresses | |
1091 | */ | |
28328ea9 | 1092 | for (i = 0; i < ETH_ALEN; ++i) { |
d62a17ae | 1093 | if (m1->macaddr.octet[i] != m2->macaddr.octet[i]) |
1094 | return (m1->macaddr.octet[i] - m2->macaddr.octet[i]); | |
1095 | } | |
1096 | ||
1097 | /* | |
1098 | * compare LNIs | |
1099 | */ | |
1100 | return (m1->logical_net_id - m2->logical_net_id); | |
65efcfce LB |
1101 | } |
1102 | ||
d62a17ae | 1103 | static void rfapiMonitorEthAttachImport( |
1104 | struct rfapi_import_table *it, | |
fe08ba7e | 1105 | struct agg_node *rn, /* it node attach point if non-0 */ |
d62a17ae | 1106 | struct rfapi_monitor_eth *mon) /* monitor struct to attach */ |
65efcfce | 1107 | { |
d62a17ae | 1108 | struct skiplist *sl; |
1109 | int rc; | |
65efcfce | 1110 | |
d62a17ae | 1111 | vnc_zlog_debug_verbose("%s: it=%p", __func__, it); |
65efcfce | 1112 | |
d62a17ae | 1113 | rfapiMonitorCheckAttachAllowed(); |
65efcfce | 1114 | |
d62a17ae | 1115 | if (RFAPI_0_ETHERADDR(&mon->macaddr)) { |
1116 | /* | |
1117 | * These go on a different list | |
1118 | */ | |
1119 | mon->next = it->eth0_queries; | |
1120 | it->eth0_queries = mon; | |
65efcfce | 1121 | #if DEBUG_L2_EXTRA |
d62a17ae | 1122 | vnc_zlog_debug_verbose("%s: attached monitor %p to eth0 list", |
1123 | __func__, mon); | |
65efcfce | 1124 | #endif |
d62a17ae | 1125 | return; |
1126 | } | |
65efcfce | 1127 | |
d62a17ae | 1128 | if (rn == NULL) { |
65efcfce | 1129 | #if DEBUG_L2_EXTRA |
d62a17ae | 1130 | vnc_zlog_debug_verbose("%s: rn is null!", __func__); |
65efcfce | 1131 | #endif |
d62a17ae | 1132 | return; |
1133 | } | |
1134 | ||
1135 | /* | |
1136 | * Get sl to attach to | |
1137 | */ | |
1138 | sl = RFAPI_MONITOR_ETH_W_ALLOC(rn); | |
1139 | if (!sl) { | |
1140 | sl = RFAPI_MONITOR_ETH_W_ALLOC(rn) = | |
1141 | skiplist_new(0, NULL, NULL); | |
fe08ba7e | 1142 | agg_lock_node(rn); /* count skiplist mon_eth */ |
d62a17ae | 1143 | } |
65efcfce LB |
1144 | |
1145 | #if DEBUG_L2_EXTRA | |
d62a17ae | 1146 | vnc_zlog_debug_verbose( |
1147 | "%s: rn=%p, rn->lock=%d, sl=%p, attaching eth mon %p", __func__, | |
1148 | rn, rn->lock, sl, mon); | |
65efcfce LB |
1149 | #endif |
1150 | ||
d62a17ae | 1151 | rc = skiplist_insert(sl, (void *)mon, (void *)mon); |
1152 | assert(!rc); | |
65efcfce | 1153 | |
d62a17ae | 1154 | /* count eth monitor */ |
fe08ba7e | 1155 | agg_lock_node(rn); |
65efcfce LB |
1156 | } |
1157 | ||
1158 | /* | |
1159 | * reattach monitors for this HD to import table | |
1160 | */ | |
d62a17ae | 1161 | static void rfapiMonitorEthAttachImportHd(struct bgp *bgp, |
1162 | struct rfapi_descriptor *rfd) | |
65efcfce | 1163 | { |
d62a17ae | 1164 | void *cursor; |
1165 | struct rfapi_monitor_eth *mon; | |
1166 | int rc; | |
1167 | ||
1168 | if (!rfd->mon_eth) { | |
1169 | /* | |
1170 | * No monitors for this HD | |
1171 | */ | |
1172 | return; | |
1173 | } | |
1174 | ||
1175 | for (cursor = NULL, | |
1176 | rc = skiplist_next(rfd->mon_eth, NULL, (void **)&mon, &cursor); | |
1177 | rc == 0; | |
1178 | rc = skiplist_next(rfd->mon_eth, NULL, (void **)&mon, &cursor)) { | |
1179 | ||
1180 | struct rfapi_import_table *it; | |
1181 | struct prefix pfx_mac_buf; | |
fe08ba7e | 1182 | struct agg_node *rn; |
d62a17ae | 1183 | |
1184 | it = rfapiMacImportTableGet(bgp, mon->logical_net_id); | |
1185 | assert(it); | |
1186 | ||
1187 | memset((void *)&pfx_mac_buf, 0, sizeof(struct prefix)); | |
1188 | pfx_mac_buf.family = AF_ETHERNET; | |
1189 | pfx_mac_buf.prefixlen = 48; | |
1190 | pfx_mac_buf.u.prefix_eth = mon->macaddr; | |
1191 | ||
fe08ba7e | 1192 | rn = agg_node_get(it->imported_vpn[AFI_L2VPN], &pfx_mac_buf); |
d62a17ae | 1193 | assert(rn); |
1194 | ||
1195 | (void)rfapiMonitorEthAttachImport(it, rn, mon); | |
1196 | } | |
65efcfce LB |
1197 | } |
1198 | ||
d62a17ae | 1199 | static void rfapiMonitorEthDetachImport( |
1200 | struct bgp *bgp, | |
1201 | struct rfapi_monitor_eth *mon) /* monitor struct to detach */ | |
65efcfce | 1202 | { |
d62a17ae | 1203 | struct rfapi_import_table *it; |
1204 | struct prefix pfx_mac_buf; | |
1205 | struct skiplist *sl; | |
fe08ba7e | 1206 | struct agg_node *rn; |
d62a17ae | 1207 | int rc; |
1208 | ||
1209 | it = rfapiMacImportTableGet(bgp, mon->logical_net_id); | |
1210 | assert(it); | |
1211 | ||
1212 | if (RFAPI_0_ETHERADDR(&mon->macaddr)) { | |
1213 | struct rfapi_monitor_eth *prev; | |
1214 | struct rfapi_monitor_eth *this = NULL; | |
1215 | ||
1216 | for (prev = NULL, this = it->eth0_queries; this; | |
1217 | prev = this, this = this->next) { | |
1218 | ||
1219 | if (this == mon) | |
1220 | break; | |
1221 | } | |
1222 | if (this) { | |
1223 | if (!prev) { | |
1224 | it->eth0_queries = this->next; | |
1225 | } else { | |
1226 | prev->next = this->next; | |
1227 | } | |
1228 | } | |
65efcfce | 1229 | #if DEBUG_L2_EXTRA |
d62a17ae | 1230 | vnc_zlog_debug_verbose( |
1231 | "%s: it=%p, LNI=%d, detached eth0 mon %p", __func__, it, | |
1232 | mon->logical_net_id, mon); | |
65efcfce | 1233 | #endif |
d62a17ae | 1234 | return; |
1235 | } | |
65efcfce | 1236 | |
d62a17ae | 1237 | memset((void *)&pfx_mac_buf, 0, sizeof(struct prefix)); |
1238 | pfx_mac_buf.family = AF_ETHERNET; | |
1239 | pfx_mac_buf.prefixlen = 48; | |
1240 | pfx_mac_buf.u.prefix_eth = mon->macaddr; | |
65efcfce | 1241 | |
fe08ba7e | 1242 | rn = agg_node_get(it->imported_vpn[AFI_L2VPN], &pfx_mac_buf); |
d62a17ae | 1243 | assert(rn); |
65efcfce | 1244 | |
d62a17ae | 1245 | /* |
1246 | * Get sl to detach from | |
1247 | */ | |
1248 | sl = RFAPI_MONITOR_ETH(rn); | |
65efcfce | 1249 | #if DEBUG_L2_EXTRA |
d62a17ae | 1250 | vnc_zlog_debug_verbose( |
2dbe669b DA |
1251 | "%s: it=%p, rn=%p, rn->lock=%d, sl=%p, pfx=%pFX, LNI=%d, detaching eth mon %p", |
1252 | __func__, it, rn, rn->lock, sl, agg_node_get_prefix(rn), | |
1253 | mon->logical_net_id, mon); | |
65efcfce | 1254 | #endif |
d62a17ae | 1255 | assert(sl); |
65efcfce LB |
1256 | |
1257 | ||
d62a17ae | 1258 | rc = skiplist_delete(sl, (void *)mon, (void *)mon); |
1259 | assert(!rc); | |
65efcfce | 1260 | |
d62a17ae | 1261 | /* uncount eth monitor */ |
fe08ba7e | 1262 | agg_unlock_node(rn); |
65efcfce LB |
1263 | } |
1264 | ||
fe08ba7e DS |
1265 | struct agg_node *rfapiMonitorEthAdd(struct bgp *bgp, |
1266 | struct rfapi_descriptor *rfd, | |
1267 | struct ethaddr *macaddr, | |
1268 | uint32_t logical_net_id) | |
65efcfce | 1269 | { |
d62a17ae | 1270 | int rc; |
1271 | struct rfapi_monitor_eth mon_buf; | |
1272 | struct rfapi_monitor_eth *val; | |
1273 | struct rfapi_import_table *it; | |
fe08ba7e | 1274 | struct agg_node *rn = NULL; |
d62a17ae | 1275 | struct prefix pfx_mac_buf; |
1276 | ||
1277 | if (!rfd->mon_eth) { | |
1278 | rfd->mon_eth = skiplist_new(0, mon_eth_cmp, NULL); | |
1279 | } | |
1280 | ||
1281 | it = rfapiMacImportTableGet(bgp, logical_net_id); | |
1282 | assert(it); | |
1283 | ||
1284 | /* | |
1285 | * Get route node in import table. Here is where we attach the | |
1286 | * monitor. | |
1287 | * | |
1288 | * Look it up now because we return it to caller regardless of | |
1289 | * whether we create a new monitor or not. | |
1290 | */ | |
1291 | memset((void *)&pfx_mac_buf, 0, sizeof(struct prefix)); | |
1292 | pfx_mac_buf.family = AF_ETHERNET; | |
1293 | pfx_mac_buf.prefixlen = 48; | |
1294 | pfx_mac_buf.u.prefix_eth = *macaddr; | |
1295 | ||
1296 | if (!RFAPI_0_ETHERADDR(macaddr)) { | |
fe08ba7e | 1297 | rn = agg_node_get(it->imported_vpn[AFI_L2VPN], &pfx_mac_buf); |
d62a17ae | 1298 | assert(rn); |
1299 | } | |
1300 | ||
1301 | memset((void *)&mon_buf, 0, sizeof(mon_buf)); | |
1302 | mon_buf.rfd = rfd; | |
1303 | mon_buf.macaddr = *macaddr; | |
1304 | mon_buf.logical_net_id = logical_net_id; | |
1305 | ||
1306 | { | |
1307 | char buf[BUFSIZ]; | |
1308 | ||
9d303b37 DL |
1309 | vnc_zlog_debug_verbose( |
1310 | "%s: LNI=%d: rfd=%p, pfx=%s", __func__, logical_net_id, | |
1311 | rfd, rfapi_ntop(pfx_mac_buf.family, pfx_mac_buf.u.val, | |
1312 | buf, BUFSIZ)); | |
d62a17ae | 1313 | } |
1314 | ||
1315 | ||
1316 | /* | |
1317 | * look up query | |
1318 | */ | |
1319 | rc = skiplist_search(rfd->mon_eth, (void *)&mon_buf, (void **)&val); | |
1320 | if (!rc) { | |
1321 | /* | |
1322 | * Found monitor - we have seen this query before | |
1323 | * restart timer | |
1324 | */ | |
1325 | vnc_zlog_debug_verbose( | |
1326 | "%s: already present in rfd->mon_eth, not adding", | |
1327 | __func__); | |
1328 | rfapiMonitorEthTimerRestart(val); | |
1329 | return rn; | |
1330 | } | |
1331 | ||
1332 | /* | |
1333 | * New query | |
1334 | */ | |
1335 | val = XCALLOC(MTYPE_RFAPI_MONITOR_ETH, | |
1336 | sizeof(struct rfapi_monitor_eth)); | |
1337 | assert(val); | |
1338 | *val = mon_buf; | |
1339 | ||
1340 | ++rfd->monitor_count; | |
1341 | ++bgp->rfapi->monitor_count; | |
1342 | ||
1343 | rc = skiplist_insert(rfd->mon_eth, val, val); | |
65efcfce LB |
1344 | |
1345 | #if DEBUG_L2_EXTRA | |
d62a17ae | 1346 | vnc_zlog_debug_verbose("%s: inserted rfd=%p mon_eth=%p, rc=%d", |
1347 | __func__, rfd, val, rc); | |
8881d722 VJ |
1348 | #else |
1349 | (void)rc; | |
65efcfce LB |
1350 | #endif |
1351 | ||
d62a17ae | 1352 | /* |
1353 | * start timer | |
1354 | */ | |
1355 | rfapiMonitorEthTimerRestart(val); | |
65efcfce | 1356 | |
d62a17ae | 1357 | if (bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_CALLBACK_DISABLE) { |
1358 | /* | |
1359 | * callbacks turned off, so don't attach monitor to import table | |
1360 | */ | |
65efcfce | 1361 | #if DEBUG_L2_EXTRA |
d62a17ae | 1362 | vnc_zlog_debug_verbose( |
1363 | "%s: callbacks turned off, not attaching mon_eth %p to import table", | |
1364 | __func__, val); | |
65efcfce | 1365 | #endif |
d62a17ae | 1366 | return rn; |
1367 | } | |
65efcfce | 1368 | |
d62a17ae | 1369 | /* |
1370 | * attach to import table | |
1371 | */ | |
1372 | rfapiMonitorEthAttachImport(it, rn, val); | |
65efcfce | 1373 | |
d62a17ae | 1374 | return rn; |
65efcfce LB |
1375 | } |
1376 | ||
d62a17ae | 1377 | void rfapiMonitorEthDel(struct bgp *bgp, struct rfapi_descriptor *rfd, |
1378 | struct ethaddr *macaddr, uint32_t logical_net_id) | |
65efcfce | 1379 | { |
d62a17ae | 1380 | struct rfapi_monitor_eth *val; |
1381 | struct rfapi_monitor_eth mon_buf; | |
1382 | int rc; | |
65efcfce | 1383 | |
d62a17ae | 1384 | vnc_zlog_debug_verbose("%s: entry rfd=%p", __func__, rfd); |
65efcfce | 1385 | |
d62a17ae | 1386 | assert(rfd->mon_eth); |
65efcfce | 1387 | |
d62a17ae | 1388 | memset((void *)&mon_buf, 0, sizeof(mon_buf)); |
1389 | mon_buf.macaddr = *macaddr; | |
1390 | mon_buf.logical_net_id = logical_net_id; | |
65efcfce | 1391 | |
d62a17ae | 1392 | rc = skiplist_search(rfd->mon_eth, (void *)&mon_buf, (void **)&val); |
1393 | assert(!rc); | |
65efcfce | 1394 | |
d62a17ae | 1395 | /* |
1396 | * remove from import table | |
1397 | */ | |
1398 | if (!(bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_CALLBACK_DISABLE)) { | |
1399 | rfapiMonitorEthDetachImport(bgp, val); | |
1400 | } | |
65efcfce | 1401 | |
c3aaa89a | 1402 | THREAD_OFF(val->timer); |
65efcfce | 1403 | |
d62a17ae | 1404 | /* |
1405 | * remove from rfd list | |
1406 | */ | |
1407 | rc = skiplist_delete(rfd->mon_eth, val, val); | |
1408 | assert(!rc); | |
65efcfce LB |
1409 | |
1410 | #if DEBUG_L2_EXTRA | |
d62a17ae | 1411 | vnc_zlog_debug_verbose("%s: freeing mon_eth %p", __func__, val); |
65efcfce | 1412 | #endif |
d62a17ae | 1413 | XFREE(MTYPE_RFAPI_MONITOR_ETH, val); |
65efcfce | 1414 | |
d62a17ae | 1415 | --rfd->monitor_count; |
1416 | --bgp->rfapi->monitor_count; | |
65efcfce LB |
1417 | } |
1418 | ||
1419 | ||
d62a17ae | 1420 | void rfapiMonitorCallbacksOff(struct bgp *bgp) |
65efcfce | 1421 | { |
d62a17ae | 1422 | struct rfapi_import_table *it; |
1423 | afi_t afi; | |
fe08ba7e DS |
1424 | struct agg_table *rt; |
1425 | struct agg_node *rn; | |
d62a17ae | 1426 | void *cursor; |
1427 | int rc; | |
1428 | struct rfapi *h = bgp->rfapi; | |
1429 | ||
1430 | if (bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_CALLBACK_DISABLE) { | |
1431 | /* | |
1432 | * Already off. | |
1433 | */ | |
1434 | return; | |
1435 | } | |
1436 | bgp->rfapi_cfg->flags |= BGP_VNC_CONFIG_CALLBACK_DISABLE; | |
65efcfce LB |
1437 | |
1438 | #if DEBUG_L2_EXTRA | |
d62a17ae | 1439 | vnc_zlog_debug_verbose("%s: turned off callbacks", __func__); |
65efcfce LB |
1440 | #endif |
1441 | ||
d62a17ae | 1442 | if (h == NULL) |
1443 | return; | |
1444 | /* | |
1445 | * detach monitors from import VPN tables. The monitors | |
1446 | * will still be linked in per-nve monitor lists. | |
1447 | */ | |
1448 | for (it = h->imports; it; it = it->next) { | |
1449 | for (afi = AFI_IP; afi < AFI_MAX; ++afi) { | |
1450 | ||
1451 | struct rfapi_monitor_vpn *m; | |
1452 | struct rfapi_monitor_vpn *next; | |
1453 | ||
1454 | rt = it->imported_vpn[afi]; | |
1455 | ||
fe08ba7e DS |
1456 | for (rn = agg_route_top(rt); rn; |
1457 | rn = agg_route_next(rn)) { | |
d62a17ae | 1458 | m = RFAPI_MONITOR_VPN(rn); |
1459 | if (RFAPI_MONITOR_VPN(rn)) | |
1460 | RFAPI_MONITOR_VPN_W_ALLOC(rn) = NULL; | |
1461 | for (; m; m = next) { | |
1462 | next = m->next; | |
1463 | m->next = | |
1464 | NULL; /* gratuitous safeness */ | |
1465 | m->node = NULL; | |
fe08ba7e | 1466 | agg_unlock_node(rn); /* uncount */ |
d62a17ae | 1467 | } |
1468 | } | |
1469 | ||
1470 | for (m = it->vpn0_queries[afi]; m; m = next) { | |
1471 | next = m->next; | |
1472 | m->next = NULL; /* gratuitous safeness */ | |
1473 | m->node = NULL; | |
1474 | } | |
1475 | it->vpn0_queries[afi] = NULL; /* detach first monitor */ | |
1476 | } | |
1477 | } | |
1478 | ||
1479 | /* | |
1480 | * detach monitors from import Eth tables. The monitors | |
1481 | * will still be linked in per-nve monitor lists. | |
1482 | */ | |
1483 | ||
1484 | /* | |
1485 | * Loop over ethernet import tables | |
1486 | */ | |
1487 | for (cursor = NULL, | |
1488 | rc = skiplist_next(h->import_mac, NULL, (void **)&it, &cursor); | |
1489 | !rc; | |
1490 | rc = skiplist_next(h->import_mac, NULL, (void **)&it, &cursor)) { | |
1491 | struct rfapi_monitor_eth *e; | |
1492 | struct rfapi_monitor_eth *enext; | |
1493 | ||
1494 | /* | |
1495 | * The actual route table | |
1496 | */ | |
1497 | rt = it->imported_vpn[AFI_L2VPN]; | |
1498 | ||
1499 | /* | |
1500 | * Find non-0 monitors (i.e., actual addresses, not FTD | |
1501 | * monitors) | |
1502 | */ | |
fe08ba7e | 1503 | for (rn = agg_route_top(rt); rn; rn = agg_route_next(rn)) { |
d62a17ae | 1504 | struct skiplist *sl; |
1505 | ||
1506 | sl = RFAPI_MONITOR_ETH(rn); | |
1507 | while (!skiplist_delete_first(sl)) { | |
fe08ba7e | 1508 | agg_unlock_node(rn); /* uncount monitor */ |
d62a17ae | 1509 | } |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * Find 0-monitors (FTD queries) | |
1514 | */ | |
1515 | for (e = it->eth0_queries; e; e = enext) { | |
65efcfce | 1516 | #if DEBUG_L2_EXTRA |
d62a17ae | 1517 | vnc_zlog_debug_verbose("%s: detaching eth0 mon %p", |
1518 | __func__, e); | |
65efcfce | 1519 | #endif |
d62a17ae | 1520 | enext = e->next; |
1521 | e->next = NULL; /* gratuitous safeness */ | |
1522 | } | |
1523 | it->eth0_queries = NULL; /* detach first monitor */ | |
1524 | } | |
65efcfce LB |
1525 | } |
1526 | ||
d62a17ae | 1527 | void rfapiMonitorCallbacksOn(struct bgp *bgp) |
65efcfce | 1528 | { |
d62a17ae | 1529 | struct listnode *hnode; |
1530 | struct rfapi_descriptor *rfd; | |
1531 | ||
1532 | if (!(bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_CALLBACK_DISABLE)) { | |
1533 | /* | |
1534 | * Already on. It's important that we don't try to reattach | |
1535 | * monitors that are already attached because, in the interest | |
1536 | * of performance, there is no checking at the lower level | |
1537 | * whether a monitor is already attached. It leads to | |
1538 | * corrupted chains (e.g., looped pointers) | |
1539 | */ | |
1540 | return; | |
1541 | } | |
1542 | bgp->rfapi_cfg->flags &= ~BGP_VNC_CONFIG_CALLBACK_DISABLE; | |
65efcfce | 1543 | #if DEBUG_L2_EXTRA |
d62a17ae | 1544 | vnc_zlog_debug_verbose("%s: turned on callbacks", __func__); |
65efcfce | 1545 | #endif |
d62a17ae | 1546 | if (bgp->rfapi == NULL) |
1547 | return; | |
1548 | ||
1549 | /* | |
1550 | * reattach monitors | |
1551 | */ | |
1552 | for (ALL_LIST_ELEMENTS_RO(&bgp->rfapi->descriptors, hnode, rfd)) { | |
1553 | ||
1554 | rfapiMonitorAttachImportHd(rfd); | |
1555 | rfapiMonitorEthAttachImportHd(bgp, rfd); | |
1556 | } | |
65efcfce | 1557 | } |