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d62a17ae | 1 | /* |
65efcfce LB |
2 | * |
3 | * Copyright 2009-2016, LabN Consulting, L.L.C. | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
65efcfce LB |
19 | */ |
20 | ||
21 | /* | |
22 | * File: vnc_import_bgp.c | |
23 | * Purpose: Import routes from BGP unicast directly (not via zebra) | |
24 | */ | |
25 | ||
f8b6f499 LB |
26 | #include "lib/zebra.h" |
27 | #include "lib/prefix.h" | |
fe08ba7e | 28 | #include "lib/agg_table.h" |
f8b6f499 LB |
29 | #include "lib/vty.h" |
30 | #include "lib/log.h" | |
31 | #include "lib/memory.h" | |
32 | #include "lib/linklist.h" | |
33 | #include "lib/plist.h" | |
34 | #include "lib/routemap.h" | |
02705213 | 35 | #include "lib/lib_errors.h" |
65efcfce | 36 | |
f8b6f499 LB |
37 | #include "bgpd/bgpd.h" |
38 | #include "bgpd/bgp_ecommunity.h" | |
39 | #include "bgpd/bgp_attr.h" | |
b2f0fa55 | 40 | #include "bgpd/bgp_route.h" |
d62a17ae | 41 | #include "bgpd/bgp_mplsvpn.h" /* for RD_TYPE_IP */ |
65efcfce | 42 | |
f8b6f499 LB |
43 | #include "bgpd/rfapi/vnc_export_bgp.h" |
44 | #include "bgpd/rfapi/bgp_rfapi_cfg.h" | |
45 | #include "bgpd/rfapi/rfapi.h" | |
46 | #include "bgpd/rfapi/rfapi_import.h" | |
47 | #include "bgpd/rfapi/rfapi_private.h" | |
48 | #include "bgpd/rfapi/rfapi_monitor.h" | |
49 | #include "bgpd/rfapi/rfapi_vty.h" | |
50 | #include "bgpd/rfapi/vnc_import_bgp.h" | |
51 | #include "bgpd/rfapi/vnc_import_bgp_p.h" | |
52 | #include "bgpd/rfapi/vnc_debug.h" | |
65efcfce LB |
53 | |
54 | #define ENABLE_VNC_RHNCK | |
55 | ||
56 | #define DEBUG_RHN_LIST 0 | |
57 | ||
58 | static struct rfapi_descriptor vncHDBgpDirect; /* dummy nve descriptor */ | |
59 | static struct rfapi_descriptor vncHDResolveNve; /* dummy nve descriptor */ | |
60 | ||
61 | /* | |
62 | * For routes from another AS: | |
63 | * | |
64 | * If MED is set, | |
65 | * LOCAL_PREF = 255 - MIN(255, MED) | |
66 | * else | |
67 | * LOCAL_PREF = default_local_pref | |
68 | * | |
69 | * For routes from the same AS: | |
70 | * | |
71 | * LOCAL_PREF unchanged | |
72 | */ | |
d62a17ae | 73 | uint32_t calc_local_pref(struct attr *attr, struct peer *peer) |
65efcfce | 74 | { |
d62a17ae | 75 | uint32_t local_pref = 0; |
76 | ||
77 | if (!attr) { | |
78 | if (peer) { | |
79 | return peer->bgp->default_local_pref; | |
80 | } | |
81 | return bgp_get_default()->default_local_pref; | |
82 | } | |
83 | ||
84 | if (peer && (peer->as != peer->bgp->as)) { | |
85 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) { | |
86 | if (attr->med > 255) { | |
87 | local_pref = 0; | |
88 | } else { | |
89 | local_pref = 255 - attr->med; | |
90 | } | |
91 | } else { | |
92 | local_pref = peer->bgp->default_local_pref; | |
93 | } | |
94 | } else { | |
95 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) { | |
96 | local_pref = attr->local_pref; | |
97 | } else { | |
98 | if (peer && peer->bgp) { | |
99 | local_pref = peer->bgp->default_local_pref; | |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | return local_pref; | |
65efcfce LB |
105 | } |
106 | ||
5a1ae2c2 | 107 | static int is_host_prefix(const struct prefix *p) |
65efcfce | 108 | { |
d62a17ae | 109 | switch (p->family) { |
110 | case AF_INET: | |
111 | return (p->prefixlen == 32); | |
112 | case AF_INET6: | |
113 | return (p->prefixlen == 128); | |
114 | } | |
115 | return 0; | |
65efcfce LB |
116 | } |
117 | ||
118 | /*********************************************************************** | |
119 | * RHN list | |
120 | ***********************************************************************/ | |
121 | ||
d62a17ae | 122 | struct prefix_bag { |
123 | struct prefix hpfx; /* ce address = unicast nexthop */ | |
124 | struct prefix upfx; /* unicast prefix */ | |
40381db7 | 125 | struct bgp_path_info *ubpi; /* unicast route */ |
65efcfce LB |
126 | }; |
127 | ||
d7c0a89a QY |
128 | static const uint8_t maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0, |
129 | 0xf8, 0xfc, 0xfe, 0xff}; | |
65efcfce | 130 | |
1a4189d4 | 131 | int vnc_prefix_cmp(const void *pfx1, const void *pfx2) |
65efcfce | 132 | { |
d62a17ae | 133 | int offset; |
134 | int shift; | |
d7c0a89a | 135 | uint8_t mask; |
d62a17ae | 136 | |
1a4189d4 DS |
137 | const struct prefix *p1 = pfx1; |
138 | const struct prefix *p2 = pfx2; | |
d62a17ae | 139 | |
140 | if (p1->family < p2->family) | |
141 | return -1; | |
142 | if (p1->family > p2->family) | |
143 | return 1; | |
144 | ||
145 | if (p1->prefixlen < p2->prefixlen) | |
146 | return -1; | |
147 | if (p1->prefixlen > p2->prefixlen) | |
148 | return 1; | |
149 | ||
150 | offset = p1->prefixlen / 8; | |
151 | shift = p1->prefixlen % 8; | |
152 | if (shift == 0 && offset) { /* catch aligned case */ | |
153 | offset--; | |
154 | shift = 8; | |
155 | } | |
156 | ||
157 | /* Set both prefix's head pointer. */ | |
d7c0a89a QY |
158 | const uint8_t *pp1 = (const uint8_t *)&p1->u.prefix; |
159 | const uint8_t *pp2 = (const uint8_t *)&p2->u.prefix; | |
d62a17ae | 160 | |
161 | while (offset--) { | |
162 | if (*pp1 < *pp2) | |
163 | return -1; | |
164 | if (*pp1 > *pp2) | |
165 | return 1; | |
166 | ++pp1; | |
167 | ++pp2; | |
168 | } | |
169 | ||
170 | mask = maskbit[shift]; | |
171 | if ((*pp1 & mask) < (*pp2 & mask)) | |
172 | return -1; | |
173 | if ((*pp1 & mask) > (*pp2 & mask)) | |
174 | return 1; | |
175 | ||
176 | return 0; | |
65efcfce LB |
177 | } |
178 | ||
d62a17ae | 179 | static void prefix_bag_free(void *pb) |
65efcfce | 180 | { |
d62a17ae | 181 | XFREE(MTYPE_RFAPI_PREFIX_BAG, pb); |
65efcfce LB |
182 | } |
183 | ||
184 | #if DEBUG_RHN_LIST | |
d62a17ae | 185 | static void print_rhn_list(const char *tag1, const char *tag2) |
65efcfce | 186 | { |
d62a17ae | 187 | struct bgp *bgp; |
188 | struct skiplist *sl; | |
189 | struct skiplistnode *p; | |
190 | struct prefix_bag *pb; | |
191 | int count = 0; | |
192 | ||
193 | bgp = bgp_get_default(); | |
194 | if (!bgp) | |
195 | return; | |
196 | ||
197 | sl = bgp->frapi->resolve_nve_nexthop; | |
198 | if (!sl) { | |
199 | vnc_zlog_debug_verbose("%s: %s: RHN List is empty", | |
200 | (tag1 ? tag1 : ""), (tag2 ? tag2 : "")); | |
201 | return; | |
202 | } | |
203 | ||
204 | vnc_zlog_debug_verbose("%s: %s: RHN list:", (tag1 ? tag1 : ""), | |
205 | (tag2 ? tag2 : "")); | |
206 | ||
207 | /* XXX uses secret knowledge of skiplist structure */ | |
208 | for (p = sl->header->forward[0]; p; p = p->forward[0]) { | |
872ed4c7 DS |
209 | char kbuf[PREFIX_STRLEN]; |
210 | char hbuf[PREFIX_STRLEN]; | |
211 | char ubuf[PREFIX_STRLEN]; | |
d62a17ae | 212 | |
213 | pb = p->value; | |
214 | ||
872ed4c7 DS |
215 | prefix2str(p->key, kbuf, sizeof(kbuf)); |
216 | prefix2str(&pb->hpfx, hbuf, sizeof(hbuf)); | |
217 | prefix2str(&pb->upfx, ubuf, sizeof(ubuf)); | |
d62a17ae | 218 | |
219 | vnc_zlog_debug_verbose( | |
40381db7 DS |
220 | "RHN Entry %d (q=%p): kpfx=%s, upfx=%s, hpfx=%s, ubpi=%p", |
221 | ++count, p, kbuf, ubuf, hbuf, pb->ubpi); | |
d62a17ae | 222 | } |
65efcfce LB |
223 | } |
224 | #endif | |
225 | ||
226 | #ifdef ENABLE_VNC_RHNCK | |
d62a17ae | 227 | static void vnc_rhnck(char *tag) |
65efcfce | 228 | { |
d62a17ae | 229 | struct bgp *bgp; |
230 | struct skiplist *sl; | |
231 | struct skiplistnode *p; | |
232 | ||
233 | bgp = bgp_get_default(); | |
234 | if (!bgp) | |
235 | return; | |
236 | sl = bgp->rfapi->resolve_nve_nexthop; | |
237 | ||
238 | if (!sl) | |
239 | return; | |
240 | ||
241 | /* XXX uses secret knowledge of skiplist structure */ | |
242 | for (p = sl->header->forward[0]; p; p = p->forward[0]) { | |
243 | struct prefix_bag *pb; | |
244 | struct prefix *pkey; | |
245 | afi_t afi; | |
246 | struct prefix pfx_orig_nexthop; | |
247 | ||
248 | memset(&pfx_orig_nexthop, 0, | |
249 | sizeof(struct prefix)); /* keep valgrind happy */ | |
250 | ||
251 | pkey = p->key; | |
252 | pb = p->value; | |
253 | ||
254 | afi = family2afi(pb->upfx.family); | |
255 | ||
40381db7 | 256 | rfapiUnicastNexthop2Prefix(afi, pb->ubpi->attr, |
d62a17ae | 257 | &pfx_orig_nexthop); |
258 | ||
40381db7 | 259 | /* pb->hpfx, pb->ubpi nexthop, pkey should all reflect the same |
d62a17ae | 260 | * pfx */ |
261 | assert(!vnc_prefix_cmp(&pb->hpfx, pkey)); | |
262 | if (vnc_prefix_cmp(&pb->hpfx, &pfx_orig_nexthop)) { | |
872ed4c7 DS |
263 | char str_onh[PREFIX_STRLEN]; |
264 | char str_nve_pfx[PREFIX_STRLEN]; | |
d62a17ae | 265 | |
872ed4c7 DS |
266 | prefix2str(&pfx_orig_nexthop, str_onh, sizeof(str_onh)); |
267 | prefix2str(&pb->hpfx, str_nve_pfx, sizeof(str_nve_pfx)); | |
d62a17ae | 268 | |
269 | vnc_zlog_debug_verbose( | |
40381db7 | 270 | "%s: %s: FATAL: resolve_nve_nexthop list item bpi nexthop %s != nve pfx %s", |
d62a17ae | 271 | __func__, tag, str_onh, str_nve_pfx); |
272 | assert(0); | |
273 | } | |
274 | } | |
275 | vnc_zlog_debug_verbose("%s: vnc_rhnck OK", tag); | |
65efcfce LB |
276 | } |
277 | ||
772270f3 QY |
278 | #define VNC_RHNCK(n) \ |
279 | do { \ | |
280 | char buf[BUFSIZ]; \ | |
281 | snprintf(buf, sizeof(buf), "%s: %s", __func__, #n); \ | |
282 | vnc_rhnck(buf); \ | |
283 | } while (0) | |
65efcfce LB |
284 | |
285 | #else | |
286 | ||
287 | #define VNC_RHNCK(n) | |
288 | ||
289 | #endif | |
290 | ||
291 | /*********************************************************************** | |
292 | * Add/Delete Unicast Route | |
293 | ***********************************************************************/ | |
294 | ||
295 | /* | |
296 | * "Adding a Route" import process | |
297 | */ | |
298 | ||
299 | /* | |
300 | * extract and package information from the BGP unicast route. | |
301 | * Return code 0 means OK, non-0 means drop. | |
302 | * | |
303 | * If return code is 0, caller MUST release ecom | |
304 | */ | |
d62a17ae | 305 | static int process_unicast_route(struct bgp *bgp, /* in */ |
306 | afi_t afi, /* in */ | |
5a1ae2c2 DS |
307 | const struct prefix *prefix, /* in */ |
308 | struct bgp_path_info *info, /* in */ | |
309 | struct ecommunity **ecom, /* OUT */ | |
d62a17ae | 310 | struct prefix *unicast_nexthop) /* OUT */ |
65efcfce | 311 | { |
d62a17ae | 312 | struct rfapi_cfg *hc = bgp->rfapi_cfg; |
313 | struct peer *peer = info->peer; | |
314 | struct attr *attr = info->attr; | |
315 | struct attr hattr; | |
316 | struct route_map *rmap = NULL; | |
317 | struct prefix pfx_orig_nexthop; | |
318 | ||
319 | memset(&pfx_orig_nexthop, 0, | |
320 | sizeof(struct prefix)); /* keep valgrind happy */ | |
321 | ||
322 | /* | |
323 | * prefix list check | |
324 | */ | |
325 | if (hc->plist_redist[ZEBRA_ROUTE_BGP_DIRECT][afi]) { | |
326 | vnc_zlog_debug_verbose("%s: HC prefix list is set, checking", | |
327 | __func__); | |
328 | if (prefix_list_apply( | |
329 | hc->plist_redist[ZEBRA_ROUTE_BGP_DIRECT][afi], | |
330 | prefix) | |
331 | == PREFIX_DENY) { | |
332 | vnc_zlog_debug_verbose( | |
333 | "%s: prefix list returns DENY, blocking route", | |
334 | __func__); | |
335 | return -1; | |
336 | } | |
337 | vnc_zlog_debug_verbose( | |
338 | "%s: prefix list returns PASS, allowing route", | |
339 | __func__); | |
340 | } | |
341 | ||
342 | /* apply routemap, if any, later */ | |
343 | rmap = hc->routemap_redist[ZEBRA_ROUTE_BGP_DIRECT]; | |
344 | ||
345 | /* | |
346 | * Extract original nexthop, which we expect to be a NVE connected | |
347 | * router | |
348 | * Note that this is the nexthop before any possible application of | |
349 | * policy | |
350 | */ | |
351 | /* | |
352 | * Incoming prefix is unicast. If v6, it is in multiprotocol area, | |
353 | * but if v4 it is in attr->nexthop | |
354 | */ | |
355 | rfapiUnicastNexthop2Prefix(afi, attr, &pfx_orig_nexthop); | |
356 | ||
357 | /* | |
358 | * route map handling | |
359 | * This code is here because it allocates an interned attr which | |
360 | * must be freed before we return. It's easier to put it after | |
361 | * all of the possible returns above. | |
362 | */ | |
363 | memset(&hattr, 0, sizeof(struct attr)); | |
6f4f49b2 QY |
364 | /* hattr becomes a ghost attr */ |
365 | hattr = *attr; | |
d62a17ae | 366 | |
367 | if (rmap) { | |
4b7e6066 | 368 | struct bgp_path_info info; |
d62a17ae | 369 | route_map_result_t ret; |
370 | ||
371 | memset(&info, 0, sizeof(info)); | |
372 | info.peer = peer; | |
373 | info.attr = &hattr; | |
374 | ret = route_map_apply(rmap, prefix, RMAP_BGP, &info); | |
375 | if (ret == RMAP_DENYMATCH) { | |
376 | bgp_attr_flush(&hattr); | |
377 | vnc_zlog_debug_verbose( | |
378 | "%s: route map \"%s\" says DENY, returning", | |
379 | __func__, rmap->name); | |
380 | return -1; | |
381 | } | |
382 | } | |
383 | ||
384 | /* | |
385 | * Get the (possibly altered by policy) unicast nexthop | |
386 | * for later lookup in the Import Table by caller | |
387 | */ | |
388 | rfapiUnicastNexthop2Prefix(afi, &hattr, unicast_nexthop); | |
389 | ||
390 | if (hattr.ecommunity) | |
391 | *ecom = ecommunity_dup(hattr.ecommunity); | |
392 | else | |
393 | *ecom = ecommunity_new(); | |
394 | ||
395 | /* | |
396 | * Done with hattr, clean up | |
397 | */ | |
398 | bgp_attr_flush(&hattr); | |
399 | ||
400 | /* | |
401 | * Add EC that carries original NH of iBGP route (2 bytes = magic | |
402 | * value indicating it came from an VNC gateway; default 5226, but | |
403 | * must be user configurable). Note that this is the nexthop before | |
404 | * any application of policy. | |
405 | */ | |
406 | { | |
407 | struct ecommunity_val vnc_gateway_magic; | |
408 | uint16_t localadmin; | |
409 | ||
410 | /* Using route origin extended community type */ | |
411 | memset(&vnc_gateway_magic, 0, sizeof(vnc_gateway_magic)); | |
412 | vnc_gateway_magic.val[0] = 0x01; | |
413 | vnc_gateway_magic.val[1] = 0x03; | |
414 | ||
415 | /* Only works for IPv4 nexthops */ | |
416 | if (prefix->family == AF_INET) { | |
417 | memcpy(vnc_gateway_magic.val + 2, | |
418 | &unicast_nexthop->u.prefix4, 4); | |
419 | } | |
420 | localadmin = htons(hc->resolve_nve_roo_local_admin); | |
421 | memcpy(vnc_gateway_magic.val + 6, (char *)&localadmin, 2); | |
422 | ||
1207a5bc | 423 | ecommunity_add_val(*ecom, &vnc_gateway_magic, false, false); |
d62a17ae | 424 | } |
425 | ||
426 | return 0; | |
65efcfce LB |
427 | } |
428 | ||
429 | ||
d62a17ae | 430 | static void vnc_import_bgp_add_route_mode_resolve_nve_one_bi( |
40381db7 DS |
431 | struct bgp *bgp, afi_t afi, struct bgp_path_info *bpi, /* VPN bpi */ |
432 | struct prefix_rd *prd, /* RD */ | |
5a1ae2c2 DS |
433 | const struct prefix *prefix, /* unicast route prefix */ |
434 | uint32_t *local_pref, /* NULL = no local_pref */ | |
435 | uint32_t *med, /* NULL = no med */ | |
436 | struct ecommunity *ecom) /* generated ecoms */ | |
65efcfce | 437 | { |
d62a17ae | 438 | struct prefix un; |
439 | struct prefix nexthop; | |
440 | struct rfapi_ip_addr nexthop_h; | |
441 | uint32_t lifetime; | |
442 | uint32_t *plifetime; | |
443 | struct bgp_attr_encap_subtlv *encaptlvs; | |
444 | uint32_t label = 0; | |
445 | ||
446 | struct rfapi_un_option optary[3]; | |
447 | struct rfapi_un_option *opt = NULL; | |
448 | int cur_opt = 0; | |
65efcfce | 449 | |
d62a17ae | 450 | vnc_zlog_debug_verbose("%s: entry", __func__); |
451 | ||
40381db7 DS |
452 | if (bpi->type != ZEBRA_ROUTE_BGP |
453 | && bpi->type != ZEBRA_ROUTE_BGP_DIRECT) { | |
d62a17ae | 454 | |
455 | return; | |
456 | } | |
40381db7 DS |
457 | if (bpi->sub_type != BGP_ROUTE_NORMAL |
458 | && bpi->sub_type != BGP_ROUTE_STATIC | |
459 | && bpi->sub_type != BGP_ROUTE_RFP) { | |
d62a17ae | 460 | |
461 | return; | |
462 | } | |
40381db7 | 463 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 464 | return; |
465 | ||
40381db7 DS |
466 | vncHDResolveNve.peer = bpi->peer; |
467 | if (!rfapiGetVncTunnelUnAddr(bpi->attr, &un)) { | |
d62a17ae | 468 | if (rfapiQprefix2Raddr(&un, &vncHDResolveNve.un_addr)) |
469 | return; | |
470 | } else { | |
471 | memset(&vncHDResolveNve.un_addr, 0, | |
472 | sizeof(vncHDResolveNve.un_addr)); | |
473 | } | |
474 | ||
475 | /* Use nexthop of VPN route as nexthop of constructed route */ | |
40381db7 | 476 | rfapiNexthop2Prefix(bpi->attr, &nexthop); |
d62a17ae | 477 | rfapiQprefix2Raddr(&nexthop, &nexthop_h); |
478 | ||
40381db7 | 479 | if (rfapiGetVncLifetime(bpi->attr, &lifetime)) { |
d62a17ae | 480 | plifetime = NULL; |
481 | } else { | |
482 | plifetime = &lifetime; | |
483 | } | |
484 | ||
05864da7 DS |
485 | encaptlvs = bpi->attr->vnc_subtlvs; |
486 | if (bpi->attr->encap_tunneltype != BGP_ENCAP_TYPE_RESERVED | |
487 | && bpi->attr->encap_tunneltype != BGP_ENCAP_TYPE_MPLS) { | |
05864da7 DS |
488 | opt = &optary[cur_opt++]; |
489 | memset(opt, 0, sizeof(struct rfapi_un_option)); | |
490 | opt->type = RFAPI_UN_OPTION_TYPE_TUNNELTYPE; | |
491 | opt->v.tunnel.type = bpi->attr->encap_tunneltype; | |
492 | /* TBD parse bpi->attr->extra->encap_subtlvs */ | |
d62a17ae | 493 | } |
494 | ||
495 | struct ecommunity *new_ecom = ecommunity_dup(ecom); | |
496 | ||
05864da7 | 497 | if (bpi->attr->ecommunity) |
40381db7 | 498 | ecommunity_merge(new_ecom, bpi->attr->ecommunity); |
d62a17ae | 499 | |
40381db7 DS |
500 | if (bpi->extra) |
501 | label = decode_label(&bpi->extra->label[0]); | |
d62a17ae | 502 | |
503 | add_vnc_route(&vncHDResolveNve, bgp, SAFI_MPLS_VPN, | |
504 | prefix, /* unicast route prefix */ | |
505 | prd, &nexthop_h, /* new nexthop */ | |
506 | local_pref, plifetime, | |
507 | (struct bgp_tea_options *)encaptlvs, /* RFP options */ | |
508 | opt, NULL, new_ecom, med, /* NULL => don't set med */ | |
509 | (label ? &label : NULL), /* NULL= default */ | |
510 | ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
511 | RFAPI_AHR_RFPOPT_IS_VNCTLV); /* flags */ | |
512 | ||
513 | ecommunity_free(&new_ecom); | |
65efcfce LB |
514 | } |
515 | ||
d62a17ae | 516 | static void vnc_import_bgp_add_route_mode_resolve_nve_one_rd( |
5a1ae2c2 | 517 | struct prefix_rd *prd, /* RD */ |
d62a17ae | 518 | struct bgp_table *table_rd, /* per-rd VPN route table */ |
5a1ae2c2 DS |
519 | afi_t afi, struct bgp *bgp, |
520 | const struct prefix *prefix, /* unicast prefix */ | |
521 | struct ecommunity *ecom, /* generated ecoms */ | |
522 | uint32_t *local_pref, /* NULL = no local_pref */ | |
40381db7 DS |
523 | uint32_t *med, /* NULL = no med */ |
524 | struct prefix *ubpi_nexthop) /* unicast nexthop */ | |
65efcfce | 525 | { |
d62a17ae | 526 | struct bgp_node *bn; |
40381db7 | 527 | struct bgp_path_info *bpi; |
65efcfce | 528 | |
d62a17ae | 529 | if (!table_rd) |
530 | return; | |
65efcfce | 531 | |
d62a17ae | 532 | { |
872ed4c7 | 533 | char str_nh[PREFIX_STRLEN]; |
65efcfce | 534 | |
40381db7 | 535 | prefix2str(ubpi_nexthop, str_nh, sizeof(str_nh)); |
65efcfce | 536 | |
40381db7 | 537 | vnc_zlog_debug_verbose("%s: ubpi_nexthop=%s", __func__, str_nh); |
d62a17ae | 538 | } |
65efcfce | 539 | |
d62a17ae | 540 | /* exact match */ |
40381db7 | 541 | bn = bgp_node_lookup(table_rd, ubpi_nexthop); |
d62a17ae | 542 | if (!bn) { |
543 | vnc_zlog_debug_verbose( | |
40381db7 DS |
544 | "%s: no match in RD's table for ubpi_nexthop", |
545 | __func__); | |
d62a17ae | 546 | return; |
547 | } | |
65efcfce | 548 | |
6f94b685 DS |
549 | /* Iterate over bgp_info items at this node */ |
550 | for (bpi = bgp_node_get_bgp_path_info(bn); bpi; bpi = bpi->next) { | |
65efcfce | 551 | |
d62a17ae | 552 | vnc_import_bgp_add_route_mode_resolve_nve_one_bi( |
40381db7 | 553 | bgp, afi, bpi, /* VPN bpi */ |
d62a17ae | 554 | prd, prefix, local_pref, med, ecom); |
555 | } | |
65efcfce | 556 | |
d62a17ae | 557 | bgp_unlock_node(bn); |
65efcfce LB |
558 | } |
559 | ||
d62a17ae | 560 | static void vnc_import_bgp_add_route_mode_resolve_nve( |
5a1ae2c2 DS |
561 | struct bgp *bgp, const struct prefix *prefix, /* unicast prefix */ |
562 | struct bgp_path_info *info) /* unicast info */ | |
65efcfce | 563 | { |
d62a17ae | 564 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 565 | |
566 | struct prefix pfx_unicast_nexthop = {0}; /* happy valgrind */ | |
567 | ||
568 | struct ecommunity *ecom = NULL; | |
569 | uint32_t local_pref; | |
570 | uint32_t *med = NULL; | |
571 | ||
572 | struct prefix_bag *pb; | |
573 | struct bgp_node *bnp; /* prd table node */ | |
574 | ||
575 | /*debugging */ | |
7f88f54a | 576 | if (VNC_DEBUG(VERBOSE)) { |
872ed4c7 DS |
577 | char str_pfx[PREFIX_STRLEN]; |
578 | char str_nh[PREFIX_STRLEN]; | |
d62a17ae | 579 | struct prefix nh; |
580 | ||
872ed4c7 | 581 | prefix2str(prefix, str_pfx, sizeof(str_pfx)); |
d62a17ae | 582 | |
583 | nh.prefixlen = 0; | |
584 | rfapiUnicastNexthop2Prefix(afi, info->attr, &nh); | |
585 | if (nh.prefixlen) { | |
872ed4c7 | 586 | prefix2str(&nh, str_nh, sizeof(str_nh)); |
d62a17ae | 587 | } else { |
588 | str_nh[0] = '?'; | |
589 | str_nh[1] = 0; | |
590 | } | |
591 | ||
592 | vnc_zlog_debug_verbose( | |
593 | "%s(bgp=%p, unicast prefix=%s, unicast nh=%s)", | |
594 | __func__, bgp, str_pfx, str_nh); | |
595 | } | |
596 | ||
597 | if (info->type != ZEBRA_ROUTE_BGP) { | |
598 | vnc_zlog_debug_verbose( | |
599 | "%s: unicast type %d=\"%s\" is not %d=%s, skipping", | |
600 | __func__, info->type, zebra_route_string(info->type), | |
601 | ZEBRA_ROUTE_BGP, "ZEBRA_ROUTE_BGP"); | |
602 | return; | |
603 | } | |
604 | ||
605 | /* | |
606 | * Preliminary checks | |
607 | */ | |
608 | ||
609 | if (!afi) { | |
450971aa | 610 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of prefix", |
1c50c1c0 | 611 | __func__); |
d62a17ae | 612 | return; |
613 | } | |
614 | ||
3f54c705 | 615 | if (!(bgp->rfapi_cfg)) { |
d62a17ae | 616 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", |
617 | __func__); | |
618 | return; | |
619 | } | |
620 | ||
621 | /* check vnc redist flag for bgp direct routes */ | |
622 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
623 | vnc_zlog_debug_verbose( | |
624 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
625 | __func__, afi); | |
626 | return; | |
627 | } | |
628 | ||
629 | ||
630 | if (process_unicast_route(bgp, afi, prefix, info, &ecom, | |
631 | &pfx_unicast_nexthop)) { | |
632 | ||
633 | vnc_zlog_debug_verbose( | |
634 | "%s: process_unicast_route error, skipping", __func__); | |
635 | return; | |
636 | } | |
637 | ||
638 | local_pref = calc_local_pref(info->attr, info->peer); | |
05864da7 | 639 | if (info->attr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) |
d62a17ae | 640 | med = &info->attr->med; |
d62a17ae | 641 | |
642 | /* | |
643 | * At this point, we have allocated: | |
644 | * | |
645 | * ecom ecommunity ptr, union of unicast and ROO parts (no NVE part) | |
646 | * | |
647 | * And we have set: | |
648 | * | |
649 | * pfx_unicast_nexthop nexthop of uncast route | |
650 | */ | |
651 | ||
652 | if (!bgp->rfapi->resolve_nve_nexthop) { | |
653 | bgp->rfapi->resolve_nve_nexthop = | |
654 | skiplist_new(SKIPLIST_FLAG_ALLOW_DUPLICATES, | |
655 | vnc_prefix_cmp, prefix_bag_free); | |
656 | } | |
657 | ||
658 | pb = XCALLOC(MTYPE_RFAPI_PREFIX_BAG, sizeof(struct prefix_bag)); | |
659 | pb->hpfx = pfx_unicast_nexthop; | |
40381db7 | 660 | pb->ubpi = info; |
d62a17ae | 661 | pb->upfx = *prefix; |
662 | ||
18ee8310 | 663 | bgp_path_info_lock(info); /* skiplist refers to it */ |
d62a17ae | 664 | skiplist_insert(bgp->rfapi->resolve_nve_nexthop, &pb->hpfx, pb); |
665 | ||
666 | /* | |
667 | * Iterate over RDs in VPN RIB. For each RD, look up unicast nexthop | |
668 | * (exact match, /32). If an exact match is found, call add_vnc_route. | |
669 | */ | |
670 | ||
671 | for (bnp = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); bnp; | |
672 | bnp = bgp_route_next(bnp)) { | |
673 | ||
674 | struct bgp_table *table; | |
675 | ||
67009e22 | 676 | table = bgp_node_get_bgp_table_info(bnp); |
d62a17ae | 677 | |
678 | if (!table) | |
679 | continue; | |
680 | ||
681 | vnc_import_bgp_add_route_mode_resolve_nve_one_rd( | |
b54892e0 DS |
682 | (struct prefix_rd *)bgp_node_get_prefix(bnp), table, |
683 | afi, bgp, prefix, ecom, &local_pref, med, | |
684 | &pfx_unicast_nexthop); | |
d62a17ae | 685 | } |
686 | ||
687 | ||
688 | if (ecom) | |
689 | ecommunity_free(&ecom); | |
690 | ||
691 | vnc_zlog_debug_verbose("%s: done", __func__); | |
65efcfce LB |
692 | } |
693 | ||
694 | ||
d62a17ae | 695 | static void vnc_import_bgp_add_route_mode_plain(struct bgp *bgp, |
5a1ae2c2 | 696 | const struct prefix *prefix, |
4b7e6066 | 697 | struct bgp_path_info *info) |
65efcfce | 698 | { |
d62a17ae | 699 | afi_t afi = family2afi(prefix->family); |
700 | struct peer *peer = info->peer; | |
701 | struct attr *attr = info->attr; | |
702 | struct attr hattr; | |
3f54c705 | 703 | struct rfapi_cfg *hc = bgp->rfapi_cfg; |
d62a17ae | 704 | struct attr *iattr = NULL; |
705 | ||
706 | struct rfapi_ip_addr vnaddr; | |
707 | struct prefix vn_pfx_space; | |
708 | struct prefix *vn_pfx = NULL; | |
709 | int ahr_flags = 0; | |
710 | struct ecommunity *ecom = NULL; | |
711 | struct prefix_rd prd; | |
712 | struct route_map *rmap = NULL; | |
713 | uint32_t local_pref; | |
714 | uint32_t *med = NULL; | |
715 | ||
716 | { | |
872ed4c7 | 717 | char buf[PREFIX_STRLEN]; |
d62a17ae | 718 | |
872ed4c7 | 719 | prefix2str(prefix, buf, sizeof(buf)); |
d62a17ae | 720 | vnc_zlog_debug_verbose("%s(prefix=%s) entry", __func__, buf); |
721 | } | |
722 | ||
723 | if (!afi) { | |
450971aa | 724 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of prefix", |
1c50c1c0 | 725 | __func__); |
d62a17ae | 726 | return; |
727 | } | |
728 | ||
3f54c705 | 729 | if (!hc) { |
d62a17ae | 730 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", |
731 | __func__); | |
732 | return; | |
733 | } | |
734 | ||
735 | /* check vnc redist flag for bgp direct routes */ | |
736 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
737 | vnc_zlog_debug_verbose( | |
738 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
739 | __func__, afi); | |
740 | return; | |
741 | } | |
742 | ||
743 | /* | |
744 | * mode "plain" specific code | |
745 | */ | |
746 | { | |
747 | vnc_zlog_debug_verbose("%s: NOT using redist RFG", __func__); | |
748 | ||
749 | /* | |
750 | * prefix list check | |
751 | */ | |
752 | if (hc->plist_redist[ZEBRA_ROUTE_BGP_DIRECT][afi]) { | |
753 | vnc_zlog_debug_verbose( | |
754 | "%s: HC prefix list is set, checking", | |
755 | __func__); | |
756 | if (prefix_list_apply( | |
757 | hc->plist_redist[ZEBRA_ROUTE_BGP_DIRECT] | |
758 | [afi], | |
759 | prefix) | |
760 | == PREFIX_DENY) { | |
761 | vnc_zlog_debug_verbose( | |
762 | "%s: prefix list returns DENY, blocking route", | |
763 | __func__); | |
764 | return; | |
765 | } | |
766 | vnc_zlog_debug_verbose( | |
767 | "%s: prefix list returns PASS, allowing route", | |
768 | __func__); | |
769 | } | |
770 | ||
771 | /* apply routemap, if any, later */ | |
772 | rmap = hc->routemap_redist[ZEBRA_ROUTE_BGP_DIRECT]; | |
773 | ||
774 | /* | |
775 | * Incoming prefix is unicast. If v6, it is in multiprotocol | |
776 | * area, | |
777 | * but if v4 it is in attr->nexthop | |
778 | */ | |
779 | rfapiUnicastNexthop2Prefix(afi, attr, &vn_pfx_space); | |
780 | vn_pfx = &vn_pfx_space; | |
781 | ||
782 | /* UN address */ | |
783 | ahr_flags |= RFAPI_AHR_NO_TUNNEL_SUBTLV; | |
784 | } | |
785 | ||
786 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
872ed4c7 | 787 | char buf[PREFIX_STRLEN]; |
d62a17ae | 788 | |
872ed4c7 | 789 | prefix2str(vn_pfx, buf, sizeof(buf)); |
d62a17ae | 790 | vnc_zlog_debug_any("%s vn_pfx=%s", __func__, buf); |
791 | } | |
792 | ||
793 | /* | |
794 | * Compute VN address | |
795 | */ | |
796 | if (rfapiQprefix2Raddr(vn_pfx, &vnaddr)) { | |
797 | vnc_zlog_debug_verbose("%s: redist VN invalid, skipping", | |
798 | __func__); | |
799 | return; | |
800 | } | |
801 | ||
802 | /* | |
803 | * route map handling | |
804 | * This code is here because it allocates an interned attr which | |
805 | * must be freed before we return. It's easier to put it after | |
806 | * all of the possible returns above. | |
807 | */ | |
808 | memset(&hattr, 0, sizeof(struct attr)); | |
6f4f49b2 QY |
809 | /* hattr becomes a ghost attr */ |
810 | hattr = *attr; | |
d62a17ae | 811 | |
812 | if (rmap) { | |
4b7e6066 | 813 | struct bgp_path_info info; |
d62a17ae | 814 | route_map_result_t ret; |
815 | ||
816 | memset(&info, 0, sizeof(info)); | |
817 | info.peer = peer; | |
818 | info.attr = &hattr; | |
819 | ret = route_map_apply(rmap, prefix, RMAP_BGP, &info); | |
820 | if (ret == RMAP_DENYMATCH) { | |
821 | bgp_attr_flush(&hattr); | |
822 | vnc_zlog_debug_verbose( | |
823 | "%s: route map \"%s\" says DENY, returning", | |
824 | __func__, rmap->name); | |
825 | return; | |
826 | } | |
827 | } | |
828 | ||
829 | iattr = bgp_attr_intern(&hattr); | |
830 | bgp_attr_flush(&hattr); | |
831 | ||
832 | /* Now iattr is an allocated interned attr */ | |
833 | ||
834 | /* | |
835 | * Mode "plain" specific code | |
836 | * | |
837 | * Sets RD in dummy HD | |
838 | * Allocates ecom | |
839 | */ | |
840 | { | |
841 | if (vnaddr.addr_family != AF_INET) { | |
842 | vnc_zlog_debug_verbose( | |
843 | "%s: can't auto-assign RD, VN AF (%d) is not IPv4, skipping", | |
844 | __func__, vnaddr.addr_family); | |
845 | if (iattr) { | |
846 | bgp_attr_unintern(&iattr); | |
847 | } | |
848 | return; | |
849 | } | |
850 | memset(&prd, 0, sizeof(prd)); | |
851 | rfapi_set_autord_from_vn(&prd, &vnaddr); | |
852 | ||
853 | if (iattr && iattr->ecommunity) | |
854 | ecom = ecommunity_dup(iattr->ecommunity); | |
855 | } | |
856 | ||
857 | local_pref = calc_local_pref(iattr, peer); | |
858 | ||
859 | if (iattr && (iattr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC))) { | |
860 | med = &iattr->med; | |
861 | } | |
862 | ||
863 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
872ed4c7 | 864 | char buf[PREFIX_STRLEN]; |
d62a17ae | 865 | |
872ed4c7 | 866 | rfapiRfapiIpAddr2Str(&vnaddr, buf, sizeof(buf)); |
d62a17ae | 867 | vnc_zlog_debug_any("%s: setting vnaddr to %s", __func__, buf); |
868 | } | |
869 | ||
870 | vncHDBgpDirect.peer = peer; | |
871 | add_vnc_route(&vncHDBgpDirect, bgp, SAFI_MPLS_VPN, prefix, &prd, | |
872 | &vnaddr, &local_pref, &(bgp->rfapi_cfg->redist_lifetime), | |
873 | NULL, /* RFP options */ | |
874 | NULL, NULL, ecom, med, /* med */ | |
875 | NULL, /* label: default */ | |
876 | ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
877 | ahr_flags); | |
878 | vncHDBgpDirect.peer = NULL; | |
879 | ||
880 | if (ecom) | |
881 | ecommunity_free(&ecom); | |
65efcfce LB |
882 | } |
883 | ||
5a1ae2c2 DS |
884 | static void vnc_import_bgp_add_route_mode_nvegroup( |
885 | struct bgp *bgp, const struct prefix *prefix, | |
886 | struct bgp_path_info *info, struct rfapi_nve_group_cfg *rfg) | |
65efcfce | 887 | { |
d62a17ae | 888 | afi_t afi = family2afi(prefix->family); |
889 | struct peer *peer = info->peer; | |
890 | struct attr *attr = info->attr; | |
891 | struct attr hattr; | |
d62a17ae | 892 | struct attr *iattr = NULL; |
893 | ||
894 | struct rfapi_ip_addr vnaddr; | |
895 | struct prefix *vn_pfx = NULL; | |
896 | int ahr_flags = 0; | |
897 | struct ecommunity *ecom = NULL; | |
898 | struct prefix_rd prd; | |
899 | struct route_map *rmap = NULL; | |
900 | uint32_t local_pref; | |
901 | ||
902 | { | |
872ed4c7 | 903 | char buf[PREFIX_STRLEN]; |
d62a17ae | 904 | |
872ed4c7 | 905 | prefix2str(prefix, buf, sizeof(buf)); |
d62a17ae | 906 | vnc_zlog_debug_verbose("%s(prefix=%s) entry", __func__, buf); |
907 | } | |
908 | ||
909 | assert(rfg); | |
910 | ||
911 | if (!afi) { | |
450971aa | 912 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of prefix", |
1c50c1c0 | 913 | __func__); |
d62a17ae | 914 | return; |
915 | } | |
916 | ||
3f54c705 | 917 | if (!(bgp->rfapi_cfg)) { |
d62a17ae | 918 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", |
919 | __func__); | |
920 | return; | |
921 | } | |
922 | ||
923 | /* check vnc redist flag for bgp direct routes */ | |
924 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
925 | vnc_zlog_debug_verbose( | |
926 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
927 | __func__, afi); | |
928 | return; | |
929 | } | |
930 | ||
931 | ||
932 | /* | |
933 | * RFG-specific code | |
934 | */ | |
935 | { | |
936 | ||
937 | struct rfapi_ip_prefix pfx_un; | |
938 | ||
939 | vnc_zlog_debug_verbose("%s: using redist RFG", __func__); | |
940 | ||
941 | /* | |
942 | * RFG prefix list check | |
943 | */ | |
944 | if (rfg->plist_redist[ZEBRA_ROUTE_BGP_DIRECT][afi]) { | |
945 | vnc_zlog_debug_verbose( | |
946 | "%s: RFG prefix list is set, checking", | |
947 | __func__); | |
948 | if (prefix_list_apply( | |
949 | rfg->plist_redist[ZEBRA_ROUTE_BGP_DIRECT] | |
950 | [afi], | |
951 | prefix) | |
952 | == PREFIX_DENY) { | |
953 | vnc_zlog_debug_verbose( | |
954 | "%s: prefix list returns DENY, blocking route", | |
955 | __func__); | |
956 | return; | |
957 | } | |
958 | vnc_zlog_debug_verbose( | |
959 | "%s: prefix list returns PASS, allowing route", | |
960 | __func__); | |
961 | } | |
962 | ||
963 | /* apply routemap, if any, later */ | |
964 | rmap = rfg->routemap_redist[ZEBRA_ROUTE_BGP_DIRECT]; | |
965 | ||
966 | /* | |
967 | * export nve group's VN addr prefix must be a /32 which | |
968 | * will yield the VN addr to use | |
969 | */ | |
970 | vn_pfx = &rfg->vn_prefix; | |
971 | ||
972 | /* | |
973 | * UN Address | |
974 | */ | |
975 | if (!is_host_prefix(&rfg->un_prefix)) { | |
976 | /* NB prefixlen==0 means it has not been configured */ | |
977 | vnc_zlog_debug_verbose( | |
978 | "%s: redist RFG UN pfx not host pfx (plen=%d), skipping", | |
979 | __func__, rfg->un_prefix.prefixlen); | |
980 | return; | |
981 | } | |
982 | ||
983 | rfapiQprefix2Rprefix(&rfg->un_prefix, &pfx_un); | |
984 | ||
985 | vncHDBgpDirect.un_addr = pfx_un.prefix; | |
986 | } | |
987 | ||
988 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
872ed4c7 | 989 | char buf[PREFIX_STRLEN]; |
d62a17ae | 990 | |
872ed4c7 | 991 | prefix2str(vn_pfx, buf, sizeof(buf)); |
d62a17ae | 992 | vnc_zlog_debug_any("%s vn_pfx=%s", __func__, buf); |
993 | } | |
994 | ||
995 | /* | |
996 | * Compute VN address | |
997 | */ | |
998 | if (rfapiQprefix2Raddr(vn_pfx, &vnaddr)) { | |
999 | vnc_zlog_debug_verbose("%s: redist VN invalid, skipping", | |
1000 | __func__); | |
1001 | return; | |
1002 | } | |
1003 | ||
1004 | /* | |
1005 | * route map handling | |
1006 | * This code is here because it allocates an interned attr which | |
1007 | * must be freed before we return. It's easier to put it after | |
1008 | * all of the possible returns above. | |
1009 | */ | |
1010 | memset(&hattr, 0, sizeof(struct attr)); | |
6f4f49b2 QY |
1011 | /* hattr becomes a ghost attr */ |
1012 | hattr = *attr; | |
d62a17ae | 1013 | |
1014 | if (rmap) { | |
9b6d8fcf | 1015 | struct bgp_path_info path; |
d62a17ae | 1016 | route_map_result_t ret; |
1017 | ||
9b6d8fcf DS |
1018 | memset(&path, 0, sizeof(path)); |
1019 | path.peer = peer; | |
1020 | path.attr = &hattr; | |
1021 | ret = route_map_apply(rmap, prefix, RMAP_BGP, &path); | |
d62a17ae | 1022 | if (ret == RMAP_DENYMATCH) { |
1023 | bgp_attr_flush(&hattr); | |
1024 | vnc_zlog_debug_verbose( | |
1025 | "%s: route map \"%s\" says DENY, returning", | |
1026 | __func__, rmap->name); | |
1027 | return; | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | iattr = bgp_attr_intern(&hattr); | |
1032 | bgp_attr_flush(&hattr); | |
1033 | ||
1034 | /* Now iattr is an allocated interned attr */ | |
1035 | ||
1036 | /* | |
1037 | * RFG-specific code | |
1038 | * | |
1039 | * Sets RD in dummy HD | |
1040 | * Allocates ecom | |
1041 | */ | |
1042 | { | |
1043 | ||
1044 | memset(&prd, 0, sizeof(prd)); | |
1045 | prd = rfg->rd; | |
1046 | prd.family = AF_UNSPEC; | |
1047 | prd.prefixlen = 64; | |
1048 | ||
1049 | if (rfg->rd.family == AF_UNIX) { | |
1050 | rfapi_set_autord_from_vn(&prd, &vnaddr); | |
1051 | } | |
1052 | ||
1053 | if (rfg->rt_export_list) | |
1054 | ecom = ecommunity_dup( | |
1055 | bgp->rfapi_cfg->rfg_redist->rt_export_list); | |
1056 | else | |
1057 | ecom = ecommunity_new(); | |
1058 | ||
1059 | if (iattr && iattr->ecommunity) | |
1060 | ecom = ecommunity_merge(ecom, iattr->ecommunity); | |
1061 | } | |
1062 | ||
1063 | local_pref = calc_local_pref(iattr, peer); | |
1064 | ||
1065 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
1066 | char buf[BUFSIZ]; | |
1067 | ||
1068 | buf[0] = 0; | |
1069 | rfapiRfapiIpAddr2Str(&vnaddr, buf, BUFSIZ); | |
1070 | buf[BUFSIZ - 1] = 0; | |
1071 | vnc_zlog_debug_any("%s: setting vnaddr to %s", __func__, buf); | |
1072 | } | |
1073 | ||
1074 | vncHDBgpDirect.peer = peer; | |
1075 | add_vnc_route(&vncHDBgpDirect, bgp, SAFI_MPLS_VPN, prefix, &prd, | |
1076 | &vnaddr, &local_pref, &(bgp->rfapi_cfg->redist_lifetime), | |
1077 | NULL, /* RFP options */ | |
1078 | NULL, NULL, ecom, NULL, /* med */ | |
1079 | NULL, /* label: default */ | |
1080 | ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
1081 | ahr_flags); | |
1082 | vncHDBgpDirect.peer = NULL; | |
1083 | ||
1084 | if (ecom) | |
1085 | ecommunity_free(&ecom); | |
65efcfce LB |
1086 | } |
1087 | ||
d62a17ae | 1088 | static void vnc_import_bgp_del_route_mode_plain(struct bgp *bgp, |
5a1ae2c2 | 1089 | const struct prefix *prefix, |
4b7e6066 | 1090 | struct bgp_path_info *info) |
65efcfce | 1091 | { |
d62a17ae | 1092 | struct prefix_rd prd; |
1093 | afi_t afi = family2afi(prefix->family); | |
1094 | struct prefix *vn_pfx = NULL; | |
1095 | struct rfapi_ip_addr vnaddr; | |
1096 | struct prefix vn_pfx_space; | |
1097 | ||
1098 | ||
1099 | assert(afi); | |
1100 | ||
1101 | /* | |
1102 | * Compute VN address | |
1103 | */ | |
1104 | ||
05864da7 | 1105 | if (info) { |
d62a17ae | 1106 | rfapiUnicastNexthop2Prefix(afi, info->attr, &vn_pfx_space); |
1107 | } else { | |
1108 | vnc_zlog_debug_verbose("%s: no attr, can't delete route", | |
1109 | __func__); | |
1110 | return; | |
1111 | } | |
1112 | vn_pfx = &vn_pfx_space; | |
1113 | ||
1114 | vnaddr.addr_family = vn_pfx->family; | |
1115 | switch (vn_pfx->family) { | |
1116 | case AF_INET: | |
1117 | if (vn_pfx->prefixlen != 32) { | |
1118 | vnc_zlog_debug_verbose( | |
1119 | "%s: redist VN plen (%d) != 32, skipping", | |
1120 | __func__, vn_pfx->prefixlen); | |
1121 | return; | |
1122 | } | |
1123 | vnaddr.addr.v4 = vn_pfx->u.prefix4; | |
1124 | break; | |
1125 | ||
1126 | case AF_INET6: | |
1127 | if (vn_pfx->prefixlen != 128) { | |
1128 | vnc_zlog_debug_verbose( | |
1129 | "%s: redist VN plen (%d) != 128, skipping", | |
1130 | __func__, vn_pfx->prefixlen); | |
1131 | return; | |
1132 | } | |
1133 | vnaddr.addr.v6 = vn_pfx->u.prefix6; | |
1134 | break; | |
1135 | ||
1136 | default: | |
1137 | vnc_zlog_debug_verbose( | |
1138 | "%s: no redist RFG VN host pfx configured, skipping", | |
1139 | __func__); | |
1140 | return; | |
1141 | } | |
1142 | ||
1143 | ||
1144 | memset(&prd, 0, sizeof(prd)); | |
1145 | if (rfapi_set_autord_from_vn(&prd, &vnaddr)) { | |
1146 | vnc_zlog_debug_verbose("%s: can't auto-assign RD, skipping", | |
1147 | __func__); | |
1148 | return; | |
1149 | } | |
1150 | ||
1151 | vncHDBgpDirect.peer = info->peer; | |
1152 | vnc_zlog_debug_verbose("%s: setting peer to %p", __func__, | |
1153 | vncHDBgpDirect.peer); | |
1154 | del_vnc_route(&vncHDBgpDirect, info->peer, bgp, SAFI_MPLS_VPN, prefix, | |
1155 | &prd, ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
1156 | NULL, 1); | |
1157 | ||
1158 | vncHDBgpDirect.peer = NULL; | |
65efcfce LB |
1159 | } |
1160 | ||
d62a17ae | 1161 | static void vnc_import_bgp_del_route_mode_nvegroup(struct bgp *bgp, |
5a1ae2c2 | 1162 | const struct prefix *prefix, |
4b7e6066 | 1163 | struct bgp_path_info *info) |
65efcfce | 1164 | { |
d62a17ae | 1165 | struct prefix_rd prd; |
1166 | afi_t afi = family2afi(prefix->family); | |
1167 | struct rfapi_nve_group_cfg *rfg = NULL; | |
1168 | struct prefix *vn_pfx = NULL; | |
1169 | struct rfapi_ip_addr vnaddr; | |
1170 | ||
1171 | ||
1172 | assert(afi); | |
1173 | ||
2ad7c8ec DS |
1174 | rfg = bgp->rfapi_cfg->rfg_redist; |
1175 | assert(rfg); | |
d62a17ae | 1176 | |
1177 | /* | |
1178 | * Compute VN address | |
1179 | */ | |
1180 | ||
1181 | /* | |
1182 | * export nve group's VN addr prefix must be a /32 which | |
1183 | * will yield the VN addr to use | |
1184 | */ | |
1185 | vn_pfx = &rfg->vn_prefix; | |
1186 | ||
1187 | ||
1188 | vnaddr.addr_family = vn_pfx->family; | |
1189 | switch (vn_pfx->family) { | |
1190 | case AF_INET: | |
1191 | if (vn_pfx->prefixlen != 32) { | |
1192 | vnc_zlog_debug_verbose( | |
1193 | "%s: redist VN plen (%d) != 32, skipping", | |
1194 | __func__, vn_pfx->prefixlen); | |
1195 | return; | |
1196 | } | |
1197 | vnaddr.addr.v4 = vn_pfx->u.prefix4; | |
1198 | break; | |
1199 | ||
1200 | case AF_INET6: | |
1201 | if (vn_pfx->prefixlen != 128) { | |
1202 | vnc_zlog_debug_verbose( | |
1203 | "%s: redist VN plen (%d) != 128, skipping", | |
1204 | __func__, vn_pfx->prefixlen); | |
1205 | return; | |
1206 | } | |
1207 | vnaddr.addr.v6 = vn_pfx->u.prefix6; | |
1208 | break; | |
1209 | ||
1210 | default: | |
1211 | vnc_zlog_debug_verbose( | |
1212 | "%s: no redist RFG VN host pfx configured, skipping", | |
1213 | __func__); | |
1214 | return; | |
1215 | } | |
1216 | ||
1217 | memset(&prd, 0, sizeof(prd)); | |
1218 | prd = rfg->rd; | |
1219 | prd.family = AF_UNSPEC; | |
1220 | prd.prefixlen = 64; | |
1221 | ||
1222 | if (rfg->rd.family == AF_UNIX) { | |
1223 | /* means "auto" with VN addr */ | |
1224 | if (rfapi_set_autord_from_vn(&prd, &vnaddr)) { | |
1225 | vnc_zlog_debug_verbose( | |
1226 | "%s: can't auto-assign RD, skipping", __func__); | |
1227 | return; | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | ||
1232 | vncHDBgpDirect.peer = info->peer; | |
1233 | vnc_zlog_debug_verbose("%s: setting peer to %p", __func__, | |
1234 | vncHDBgpDirect.peer); | |
1235 | del_vnc_route(&vncHDBgpDirect, info->peer, bgp, SAFI_MPLS_VPN, prefix, | |
1236 | &prd, ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
1237 | NULL, 1); | |
1238 | ||
1239 | vncHDBgpDirect.peer = NULL; | |
65efcfce LB |
1240 | } |
1241 | ||
d62a17ae | 1242 | static void vnc_import_bgp_del_route_mode_resolve_nve_one_bi( |
40381db7 DS |
1243 | struct bgp *bgp, afi_t afi, struct bgp_path_info *bpi, /* VPN bpi */ |
1244 | struct prefix_rd *prd, /* RD */ | |
5a1ae2c2 | 1245 | const struct prefix *prefix) /* unicast route prefix */ |
65efcfce | 1246 | { |
d62a17ae | 1247 | struct prefix un; |
1248 | ||
40381db7 DS |
1249 | if (bpi->type != ZEBRA_ROUTE_BGP |
1250 | && bpi->type != ZEBRA_ROUTE_BGP_DIRECT) { | |
65efcfce | 1251 | |
d62a17ae | 1252 | return; |
1253 | } | |
40381db7 DS |
1254 | if (bpi->sub_type != BGP_ROUTE_NORMAL |
1255 | && bpi->sub_type != BGP_ROUTE_STATIC | |
1256 | && bpi->sub_type != BGP_ROUTE_RFP) { | |
d62a17ae | 1257 | |
1258 | return; | |
1259 | } | |
40381db7 | 1260 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 1261 | return; |
1262 | ||
40381db7 DS |
1263 | vncHDResolveNve.peer = bpi->peer; |
1264 | if (!rfapiGetVncTunnelUnAddr(bpi->attr, &un)) { | |
d62a17ae | 1265 | if (rfapiQprefix2Raddr(&un, &vncHDResolveNve.un_addr)) |
1266 | return; | |
1267 | } else { | |
1268 | memset(&vncHDResolveNve.un_addr, 0, | |
1269 | sizeof(vncHDResolveNve.un_addr)); | |
1270 | } | |
1271 | ||
1272 | del_vnc_route(&vncHDResolveNve, vncHDResolveNve.peer, bgp, | |
1273 | SAFI_MPLS_VPN, prefix, /* unicast route prefix */ | |
1274 | prd, ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, NULL, | |
1275 | 0); /* flags */ | |
65efcfce LB |
1276 | } |
1277 | ||
d62a17ae | 1278 | static void vnc_import_bgp_del_route_mode_resolve_nve_one_rd( |
1279 | struct prefix_rd *prd, | |
1280 | struct bgp_table *table_rd, /* per-rd VPN route table */ | |
5a1ae2c2 DS |
1281 | afi_t afi, struct bgp *bgp, |
1282 | const struct prefix *prefix, /* unicast prefix */ | |
1283 | const struct prefix *ubpi_nexthop) /* unicast bpi's nexthop */ | |
65efcfce | 1284 | { |
d62a17ae | 1285 | struct bgp_node *bn; |
40381db7 | 1286 | struct bgp_path_info *bpi; |
65efcfce | 1287 | |
d62a17ae | 1288 | if (!table_rd) |
1289 | return; | |
65efcfce | 1290 | |
d62a17ae | 1291 | { |
872ed4c7 | 1292 | char str_nh[PREFIX_STRLEN]; |
65efcfce | 1293 | |
40381db7 DS |
1294 | prefix2str(ubpi_nexthop, str_nh, sizeof(str_nh)); |
1295 | vnc_zlog_debug_verbose("%s: ubpi_nexthop=%s", __func__, str_nh); | |
d62a17ae | 1296 | } |
65efcfce LB |
1297 | |
1298 | ||
d62a17ae | 1299 | /* exact match */ |
40381db7 | 1300 | bn = bgp_node_lookup(table_rd, ubpi_nexthop); |
d62a17ae | 1301 | if (!bn) { |
1302 | vnc_zlog_debug_verbose( | |
40381db7 DS |
1303 | "%s: no match in RD's table for ubpi_nexthop", |
1304 | __func__); | |
d62a17ae | 1305 | return; |
1306 | } | |
65efcfce | 1307 | |
6f94b685 DS |
1308 | /* Iterate over bgp_info items at this node */ |
1309 | for (bpi = bgp_node_get_bgp_path_info(bn); bpi; bpi = bpi->next) { | |
65efcfce | 1310 | |
d62a17ae | 1311 | vnc_import_bgp_del_route_mode_resolve_nve_one_bi( |
40381db7 DS |
1312 | bgp, afi, bpi, /* VPN bpi */ |
1313 | prd, /* VPN RD */ | |
1314 | prefix); /* unicast route prefix */ | |
d62a17ae | 1315 | } |
65efcfce | 1316 | |
d62a17ae | 1317 | bgp_unlock_node(bn); |
65efcfce LB |
1318 | } |
1319 | ||
4b7e6066 DS |
1320 | static void |
1321 | vnc_import_bgp_del_route_mode_resolve_nve(struct bgp *bgp, afi_t afi, | |
5a1ae2c2 | 1322 | const struct prefix *prefix, |
4b7e6066 | 1323 | struct bgp_path_info *info) |
65efcfce | 1324 | { |
d62a17ae | 1325 | struct ecommunity *ecom = NULL; |
1326 | struct prefix pfx_unicast_nexthop = {0}; /* happy valgrind */ | |
1327 | ||
1328 | // struct listnode *hnode; | |
1329 | // struct rfapi_descriptor *rfd; | |
1330 | struct prefix_bag *pb; | |
1331 | void *cursor; | |
1332 | struct skiplist *sl = bgp->rfapi->resolve_nve_nexthop; | |
1333 | int rc; | |
1334 | struct bgp_node *bnp; /* prd table node */ | |
1335 | ||
1336 | if (!sl) { | |
1337 | vnc_zlog_debug_verbose("%s: no RHN entries, skipping", | |
1338 | __func__); | |
1339 | return; | |
1340 | } | |
65efcfce | 1341 | |
d62a17ae | 1342 | if (info->type != ZEBRA_ROUTE_BGP) { |
1343 | vnc_zlog_debug_verbose( | |
1344 | "%s: unicast type %d=\"%s\" is not %d=%s, skipping", | |
1345 | __func__, info->type, zebra_route_string(info->type), | |
1346 | ZEBRA_ROUTE_BGP, "ZEBRA_ROUTE_BGP"); | |
1347 | return; | |
1348 | } | |
65efcfce | 1349 | |
d62a17ae | 1350 | if (process_unicast_route(bgp, afi, prefix, info, &ecom, |
1351 | &pfx_unicast_nexthop)) { | |
1352 | ||
1353 | vnc_zlog_debug_verbose( | |
1354 | "%s: process_unicast_route error, skipping", __func__); | |
1355 | return; | |
1356 | } | |
1357 | ||
1358 | rc = skiplist_first_value(sl, &pfx_unicast_nexthop, (void *)&pb, | |
1359 | &cursor); | |
1360 | while (!rc) { | |
40381db7 | 1361 | if (pb->ubpi == info) { |
d62a17ae | 1362 | skiplist_delete(sl, &pfx_unicast_nexthop, pb); |
18ee8310 | 1363 | bgp_path_info_unlock(info); |
d62a17ae | 1364 | break; |
1365 | } | |
1366 | rc = skiplist_next_value(sl, &pfx_unicast_nexthop, (void *)&pb, | |
1367 | &cursor); | |
1368 | } | |
1369 | ||
1370 | /* | |
1371 | * Iterate over RDs in VPN RIB. For each RD, look up unicast nexthop | |
1372 | * (exact match, /32). If an exact match is found, call add_vnc_route. | |
1373 | */ | |
1374 | ||
1375 | for (bnp = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); bnp; | |
1376 | bnp = bgp_route_next(bnp)) { | |
1377 | ||
1378 | struct bgp_table *table; | |
1379 | ||
67009e22 | 1380 | table = bgp_node_get_bgp_table_info(bnp); |
d62a17ae | 1381 | |
1382 | if (!table) | |
1383 | continue; | |
1384 | ||
1385 | vnc_import_bgp_del_route_mode_resolve_nve_one_rd( | |
b54892e0 DS |
1386 | (struct prefix_rd *)bgp_node_get_prefix(bnp), table, |
1387 | afi, bgp, prefix, &pfx_unicast_nexthop); | |
d62a17ae | 1388 | } |
1389 | ||
1390 | if (ecom) | |
1391 | ecommunity_free(&ecom); | |
1392 | } | |
65efcfce LB |
1393 | |
1394 | ||
1395 | /*********************************************************************** | |
1396 | * Add/Delete CE->NVE routes | |
1397 | ***********************************************************************/ | |
1398 | ||
1399 | /* | |
40381db7 | 1400 | * Should be called whan a bpi is added to VPN RIB. This function |
65efcfce LB |
1401 | * will check if it is a host route and return immediately if not. |
1402 | */ | |
d62a17ae | 1403 | void vnc_import_bgp_add_vnc_host_route_mode_resolve_nve( |
1404 | struct bgp *bgp, struct prefix_rd *prd, /* RD */ | |
1405 | struct bgp_table *table_rd, /* per-rd VPN route table */ | |
5a1ae2c2 | 1406 | const struct prefix *prefix, /* VPN prefix */ |
40381db7 | 1407 | struct bgp_path_info *bpi) /* new VPN host route */ |
65efcfce | 1408 | { |
d62a17ae | 1409 | afi_t afi = family2afi(prefix->family); |
1410 | struct skiplist *sl = NULL; | |
1411 | int rc; | |
1412 | struct prefix_bag *pb; | |
1413 | void *cursor; | |
1414 | struct rfapi_cfg *hc = NULL; | |
1415 | ||
1416 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
1417 | ||
1418 | if (afi != AFI_IP && afi != AFI_IP6) { | |
1419 | vnc_zlog_debug_verbose("%s: bad afi %d, skipping", __func__, | |
1420 | afi); | |
1421 | return; | |
1422 | } | |
1423 | ||
1424 | if (!(hc = bgp->rfapi_cfg)) { | |
1425 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
1426 | __func__); | |
1427 | return; | |
1428 | } | |
65efcfce | 1429 | |
d62a17ae | 1430 | /* check vnc redist flag for bgp direct routes */ |
1431 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
1432 | vnc_zlog_debug_verbose( | |
1433 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
1434 | __func__, afi); | |
1435 | return; | |
1436 | } | |
65efcfce | 1437 | |
d62a17ae | 1438 | if (hc->redist_mode != VNC_REDIST_MODE_RESOLVE_NVE) { |
1439 | vnc_zlog_debug_verbose("%s: not in resolve-nve mode, skipping", | |
1440 | __func__); | |
1441 | return; | |
65efcfce LB |
1442 | } |
1443 | ||
8cea9547 | 1444 | if (bgp->rfapi) |
d62a17ae | 1445 | sl = bgp->rfapi->resolve_nve_nexthop; |
1446 | ||
1447 | if (!sl) { | |
1448 | vnc_zlog_debug_verbose( | |
1449 | "%s: no resolve_nve_nexthop skiplist, skipping", | |
1450 | __func__); | |
1451 | return; | |
1452 | } | |
1453 | ||
1454 | if (!is_host_prefix(prefix)) { | |
1455 | vnc_zlog_debug_verbose("%s: not host prefix, skipping", | |
1456 | __func__); | |
1457 | return; | |
1458 | } | |
1459 | ||
1460 | rc = skiplist_first_value(sl, prefix, (void *)&pb, &cursor); | |
1461 | while (!rc) { | |
1462 | struct ecommunity *ecom; | |
1463 | struct prefix pfx_unicast_nexthop; | |
1464 | uint32_t *med = NULL; | |
1465 | uint32_t local_pref; | |
1466 | ||
1467 | memset(&pfx_unicast_nexthop, 0, | |
1468 | sizeof(struct prefix)); /* keep valgrind happy */ | |
1469 | ||
1470 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
872ed4c7 DS |
1471 | char hbuf[PREFIX_STRLEN]; |
1472 | char ubuf[PREFIX_STRLEN]; | |
65efcfce | 1473 | |
872ed4c7 DS |
1474 | prefix2str(&pb->hpfx, hbuf, sizeof(hbuf)); |
1475 | prefix2str(&pb->upfx, ubuf, sizeof(ubuf)); | |
65efcfce | 1476 | |
d62a17ae | 1477 | vnc_zlog_debug_any( |
40381db7 DS |
1478 | "%s: examining RHN Entry (q=%p): upfx=%s, hpfx=%s, ubpi=%p", |
1479 | __func__, cursor, ubuf, hbuf, pb->ubpi); | |
d62a17ae | 1480 | } |
65efcfce | 1481 | |
40381db7 | 1482 | if (process_unicast_route(bgp, afi, &pb->upfx, pb->ubpi, &ecom, |
d62a17ae | 1483 | &pfx_unicast_nexthop)) { |
65efcfce | 1484 | |
d62a17ae | 1485 | vnc_zlog_debug_verbose( |
1486 | "%s: process_unicast_route error, skipping", | |
1487 | __func__); | |
1488 | continue; | |
1489 | } | |
40381db7 | 1490 | local_pref = calc_local_pref(pb->ubpi->attr, pb->ubpi->peer); |
65efcfce | 1491 | |
05864da7 DS |
1492 | if (pb->ubpi->attr->flag |
1493 | & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) | |
40381db7 | 1494 | med = &pb->ubpi->attr->med; |
65efcfce | 1495 | |
d62a17ae | 1496 | /* |
1497 | * Sanity check | |
1498 | */ | |
1499 | if (vnc_prefix_cmp(&pfx_unicast_nexthop, prefix)) { | |
872ed4c7 DS |
1500 | char str_unh[PREFIX_STRLEN]; |
1501 | char str_nve_pfx[PREFIX_STRLEN]; | |
65efcfce | 1502 | |
872ed4c7 DS |
1503 | prefix2str(&pfx_unicast_nexthop, str_unh, |
1504 | sizeof(str_unh)); | |
1505 | prefix2str(prefix, str_nve_pfx, sizeof(str_nve_pfx)); | |
d62a17ae | 1506 | |
1507 | vnc_zlog_debug_verbose( | |
40381db7 | 1508 | "%s: FATAL: resolve_nve_nexthop list item bpi nexthop %s != nve pfx %s", |
d62a17ae | 1509 | __func__, str_unh, str_nve_pfx); |
1510 | assert(0); | |
1511 | } | |
1512 | ||
1513 | vnc_import_bgp_add_route_mode_resolve_nve_one_bi( | |
40381db7 | 1514 | bgp, afi, bpi, /* VPN bpi */ |
d62a17ae | 1515 | prd, &pb->upfx, /* unicast prefix */ |
1516 | &local_pref, med, ecom); | |
1517 | ||
1518 | if (ecom) | |
1519 | ecommunity_free(&ecom); | |
65efcfce LB |
1520 | |
1521 | #if DEBUG_RHN_LIST | |
d62a17ae | 1522 | /* debug */ |
1523 | { | |
872ed4c7 | 1524 | char pbuf[PREFIX_STRLEN]; |
65efcfce | 1525 | |
872ed4c7 | 1526 | prefix2str(prefix, pbuf, sizeof(pbuf)); |
65efcfce | 1527 | |
d62a17ae | 1528 | vnc_zlog_debug_verbose( |
1529 | "%s: advancing past RHN Entry (q=%p): with prefix %s", | |
1530 | __func__, cursor, pbuf); | |
1531 | print_rhn_list(__func__, NULL); /* debug */ | |
1532 | } | |
65efcfce | 1533 | #endif |
d62a17ae | 1534 | rc = skiplist_next_value(sl, prefix, (void *)&pb, &cursor); |
1535 | } | |
1536 | vnc_zlog_debug_verbose("%s: done", __func__); | |
65efcfce LB |
1537 | } |
1538 | ||
1539 | ||
d62a17ae | 1540 | void vnc_import_bgp_del_vnc_host_route_mode_resolve_nve( |
1541 | struct bgp *bgp, struct prefix_rd *prd, /* RD */ | |
1542 | struct bgp_table *table_rd, /* per-rd VPN route table */ | |
5a1ae2c2 | 1543 | const struct prefix *prefix, /* VPN prefix */ |
40381db7 | 1544 | struct bgp_path_info *bpi) /* old VPN host route */ |
65efcfce | 1545 | { |
d62a17ae | 1546 | afi_t afi = family2afi(prefix->family); |
1547 | struct skiplist *sl = NULL; | |
1548 | struct prefix_bag *pb; | |
1549 | void *cursor; | |
1550 | struct rfapi_cfg *hc = NULL; | |
1551 | int rc; | |
1552 | ||
1553 | { | |
872ed4c7 | 1554 | char str_pfx[PREFIX_STRLEN]; |
d62a17ae | 1555 | |
872ed4c7 | 1556 | prefix2str(prefix, str_pfx, sizeof(str_pfx)); |
d62a17ae | 1557 | |
1558 | vnc_zlog_debug_verbose("%s(bgp=%p, nve prefix=%s)", __func__, | |
1559 | bgp, str_pfx); | |
1560 | } | |
1561 | ||
1562 | if (afi != AFI_IP && afi != AFI_IP6) | |
1563 | return; | |
1564 | ||
1565 | if (!(hc = bgp->rfapi_cfg)) { | |
1566 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
1567 | __func__); | |
1568 | return; | |
1569 | } | |
1570 | ||
1571 | /* check vnc redist flag for bgp direct routes */ | |
1572 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
1573 | vnc_zlog_debug_verbose( | |
1574 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
1575 | __func__, afi); | |
1576 | return; | |
1577 | } | |
1578 | ||
1579 | if (hc->redist_mode != VNC_REDIST_MODE_RESOLVE_NVE) { | |
1580 | vnc_zlog_debug_verbose("%s: not in resolve-nve mode, skipping", | |
1581 | __func__); | |
1582 | return; | |
1583 | } | |
1584 | ||
8cea9547 | 1585 | if (bgp->rfapi) |
d62a17ae | 1586 | sl = bgp->rfapi->resolve_nve_nexthop; |
1587 | ||
1588 | if (!sl) { | |
1589 | vnc_zlog_debug_verbose("%s: no RHN entries, skipping", | |
1590 | __func__); | |
1591 | return; | |
1592 | } | |
1593 | ||
1594 | if (!is_host_prefix(prefix)) { | |
1595 | vnc_zlog_debug_verbose("%s: not host route, skip", __func__); | |
1596 | return; | |
1597 | } | |
1598 | ||
1599 | /* | |
1600 | * Find all entries with key == CE in the RHN list | |
1601 | */ | |
1602 | rc = skiplist_first_value(sl, prefix, (void *)&pb, &cursor); | |
1603 | while (!rc) { | |
1604 | ||
1605 | struct ecommunity *ecom; | |
1606 | struct prefix pfx_unicast_nexthop; | |
1607 | ||
1608 | memset(&pfx_unicast_nexthop, 0, | |
1609 | sizeof(struct prefix)); /* keep valgrind happy */ | |
1610 | ||
40381db7 | 1611 | if (process_unicast_route(bgp, afi, &pb->upfx, pb->ubpi, &ecom, |
d62a17ae | 1612 | &pfx_unicast_nexthop)) { |
1613 | ||
1614 | vnc_zlog_debug_verbose( | |
1615 | "%s: process_unicast_route error, skipping", | |
1616 | __func__); | |
1617 | continue; | |
1618 | } | |
1619 | ||
1620 | /* | |
1621 | * Sanity check | |
1622 | */ | |
1623 | if (vnc_prefix_cmp(&pfx_unicast_nexthop, prefix)) { | |
872ed4c7 DS |
1624 | char str_unh[PREFIX_STRLEN]; |
1625 | char str_nve_pfx[PREFIX_STRLEN]; | |
d62a17ae | 1626 | |
872ed4c7 DS |
1627 | prefix2str(&pfx_unicast_nexthop, str_unh, |
1628 | sizeof(str_unh)); | |
1629 | prefix2str(prefix, str_nve_pfx, sizeof(str_nve_pfx)); | |
d62a17ae | 1630 | |
1631 | vnc_zlog_debug_verbose( | |
40381db7 | 1632 | "%s: FATAL: resolve_nve_nexthop list item bpi nexthop %s != nve pfx %s", |
d62a17ae | 1633 | __func__, str_unh, str_nve_pfx); |
1634 | assert(0); | |
1635 | } | |
1636 | ||
1637 | vnc_import_bgp_del_route_mode_resolve_nve_one_bi( | |
40381db7 | 1638 | bgp, afi, bpi, prd, &pb->upfx); |
d62a17ae | 1639 | |
1640 | if (ecom) | |
1641 | ecommunity_free(&ecom); | |
1642 | ||
1643 | rc = skiplist_next_value(sl, prefix, (void *)&pb, &cursor); | |
1644 | } | |
65efcfce LB |
1645 | } |
1646 | ||
1647 | ||
1648 | /*********************************************************************** | |
1649 | * Exterior Routes | |
1650 | ***********************************************************************/ | |
1651 | ||
1652 | #define DEBUG_IS_USABLE_INTERIOR 1 | |
1653 | ||
40381db7 | 1654 | static int is_usable_interior_route(struct bgp_path_info *bpi_interior) |
65efcfce | 1655 | { |
40381db7 | 1656 | if (!VALID_INTERIOR_TYPE(bpi_interior->type)) { |
65efcfce | 1657 | #if DEBUG_IS_USABLE_INTERIOR |
d62a17ae | 1658 | vnc_zlog_debug_verbose( |
1659 | "%s: NO: type %d is not valid interior type", __func__, | |
40381db7 | 1660 | bpi_interior->type); |
65efcfce | 1661 | #endif |
d62a17ae | 1662 | return 0; |
1663 | } | |
40381db7 | 1664 | if (!CHECK_FLAG(bpi_interior->flags, BGP_PATH_VALID)) { |
65efcfce | 1665 | #if DEBUG_IS_USABLE_INTERIOR |
1defdda8 | 1666 | vnc_zlog_debug_verbose("%s: NO: BGP_PATH_VALID not set", |
d62a17ae | 1667 | __func__); |
65efcfce | 1668 | #endif |
d62a17ae | 1669 | return 0; |
1670 | } | |
1671 | return 1; | |
65efcfce LB |
1672 | } |
1673 | ||
1674 | /* | |
1675 | * There should be only one of these per prefix at a time. | |
1676 | * This should be called as a result of selection operation | |
1677 | * | |
1678 | * NB should be called espacially for bgp instances that are named, | |
1679 | * because the exterior routes will always come from one of those. | |
1680 | * We filter here on the instance name to make sure we get only the | |
1681 | * right routes. | |
1682 | */ | |
d62a17ae | 1683 | static void vnc_import_bgp_exterior_add_route_it( |
1684 | struct bgp *bgp, /* exterior instance, we hope */ | |
5a1ae2c2 DS |
1685 | const struct prefix *prefix, /* unicast prefix */ |
1686 | struct bgp_path_info *info, /* unicast info */ | |
d62a17ae | 1687 | struct rfapi_import_table *it_only) /* NULL, or limit to this IT */ |
65efcfce | 1688 | { |
d62a17ae | 1689 | struct rfapi *h; |
1690 | struct rfapi_cfg *hc; | |
1691 | struct prefix pfx_orig_nexthop; | |
1692 | struct rfapi_import_table *it; | |
1693 | struct bgp *bgp_default = bgp_get_default(); | |
1694 | afi_t afi = family2afi(prefix->family); | |
1695 | ||
1696 | if (!bgp_default) | |
1697 | return; | |
1698 | ||
1699 | h = bgp_default->rfapi; | |
1700 | hc = bgp_default->rfapi_cfg; | |
1701 | ||
1702 | vnc_zlog_debug_verbose("%s: entry with it=%p", __func__, it_only); | |
1703 | ||
1704 | if (!h || !hc) { | |
1705 | vnc_zlog_debug_verbose( | |
1706 | "%s: rfapi or rfapi_cfg not instantiated, skipping", | |
1707 | __func__); | |
1708 | return; | |
1709 | } | |
1710 | if (!hc->redist_bgp_exterior_view) { | |
1711 | vnc_zlog_debug_verbose("%s: exterior view not set, skipping", | |
1712 | __func__); | |
1713 | return; | |
1714 | } | |
1715 | if (bgp != hc->redist_bgp_exterior_view) { | |
1716 | vnc_zlog_debug_verbose( | |
1717 | "%s: bgp %p != hc->redist_bgp_exterior_view %p, skipping", | |
1718 | __func__, bgp, hc->redist_bgp_exterior_view); | |
1719 | return; | |
1720 | } | |
1721 | ||
1722 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { | |
1723 | vnc_zlog_debug_verbose( | |
1724 | "%s: redist of exterior routes not enabled, skipping", | |
1725 | __func__); | |
1726 | return; | |
1727 | } | |
1728 | ||
d62a17ae | 1729 | /* |
1730 | * Extract nexthop from exterior route | |
1731 | * | |
1732 | * Incoming prefix is unicast. If v6, it is in multiprotocol area, | |
1733 | * but if v4 it is in attr->nexthop | |
1734 | */ | |
1735 | rfapiUnicastNexthop2Prefix(afi, info->attr, &pfx_orig_nexthop); | |
1736 | ||
1737 | for (it = h->imports; it; it = it->next) { | |
fe08ba7e DS |
1738 | struct agg_table *table; |
1739 | struct agg_node *rn; | |
1740 | struct agg_node *par; | |
40381db7 | 1741 | struct bgp_path_info *bpi_interior; |
d62a17ae | 1742 | int have_usable_route; |
1743 | ||
1744 | vnc_zlog_debug_verbose("%s: doing it %p", __func__, it); | |
1745 | ||
1746 | if (it_only && (it_only != it)) { | |
1747 | vnc_zlog_debug_verbose("%s: doesn't match it_only %p", | |
1748 | __func__, it_only); | |
1749 | continue; | |
1750 | } | |
1751 | ||
1752 | table = it->imported_vpn[afi]; | |
1753 | ||
fe08ba7e | 1754 | for (rn = agg_node_match(table, &pfx_orig_nexthop), |
d62a17ae | 1755 | have_usable_route = 0; |
1756 | (!have_usable_route) && rn;) { | |
1757 | ||
1758 | vnc_zlog_debug_verbose("%s: it %p trying rn %p", | |
1759 | __func__, it, rn); | |
1760 | ||
40381db7 DS |
1761 | for (bpi_interior = rn->info; bpi_interior; |
1762 | bpi_interior = bpi_interior->next) { | |
d62a17ae | 1763 | struct prefix_rd *prd; |
1764 | struct attr new_attr; | |
d7c0a89a | 1765 | uint32_t label = 0; |
d62a17ae | 1766 | |
40381db7 | 1767 | if (!is_usable_interior_route(bpi_interior)) |
d62a17ae | 1768 | continue; |
1769 | ||
1770 | vnc_zlog_debug_verbose( | |
40381db7 DS |
1771 | "%s: usable: bpi_interior %p", __func__, |
1772 | bpi_interior); | |
d62a17ae | 1773 | |
1774 | /* | |
1775 | * have a legitimate route to exterior's nexthop | |
1776 | * via NVE. | |
1777 | * | |
1778 | * Import unicast route to the import table | |
1779 | */ | |
1780 | have_usable_route = 1; | |
1781 | ||
40381db7 DS |
1782 | if (bpi_interior->extra) { |
1783 | prd = &bpi_interior->extra->vnc.import | |
d62a17ae | 1784 | .rd; |
1785 | label = decode_label( | |
40381db7 | 1786 | &bpi_interior->extra->label[0]); |
d62a17ae | 1787 | } else |
1788 | prd = NULL; | |
1789 | ||
1790 | /* use local_pref from unicast route */ | |
1791 | memset(&new_attr, 0, sizeof(struct attr)); | |
6f4f49b2 | 1792 | new_attr = *bpi_interior->attr; |
d62a17ae | 1793 | if (info->attr->flag |
1794 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) { | |
1795 | new_attr.local_pref = | |
1796 | info->attr->local_pref; | |
1797 | new_attr.flag |= ATTR_FLAG_BIT( | |
1798 | BGP_ATTR_LOCAL_PREF); | |
1799 | } | |
1800 | ||
1801 | rfapiBgpInfoFilteredImportVPN( | |
1802 | it, FIF_ACTION_UPDATE, | |
40381db7 | 1803 | bpi_interior->peer, NULL, /* rfd */ |
d62a17ae | 1804 | prefix, NULL, afi, prd, &new_attr, |
1805 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
1806 | BGP_ROUTE_REDISTRIBUTE, &label); | |
1807 | } | |
1808 | ||
1809 | if (have_usable_route) { | |
1810 | /* | |
1811 | * Make monitor | |
1812 | * | |
1813 | * TBD factor this out into its own function | |
1814 | */ | |
1815 | struct prefix *pfx_mon = prefix_new(); | |
1816 | if (!RFAPI_MONITOR_EXTERIOR(rn)->source) { | |
1817 | RFAPI_MONITOR_EXTERIOR(rn)->source = | |
1818 | skiplist_new( | |
1819 | 0, NULL, | |
63265b5c | 1820 | prefix_free_lists); |
fe08ba7e | 1821 | agg_lock_node(rn); /* for skiplist */ |
d62a17ae | 1822 | } |
fe08ba7e | 1823 | agg_lock_node(rn); /* for skiplist entry */ |
d62a17ae | 1824 | prefix_copy(pfx_mon, prefix); |
1825 | if (!skiplist_insert( | |
1826 | RFAPI_MONITOR_EXTERIOR(rn)->source, | |
1827 | info, pfx_mon)) { | |
1828 | ||
18ee8310 | 1829 | bgp_path_info_lock(info); |
d62a17ae | 1830 | } |
1831 | } | |
fe08ba7e | 1832 | par = agg_node_parent(rn); |
d62a17ae | 1833 | if (par) |
fe08ba7e DS |
1834 | agg_lock_node(par); |
1835 | agg_unlock_node(rn); | |
d62a17ae | 1836 | rn = par; |
1837 | } | |
1838 | if (rn) | |
fe08ba7e | 1839 | agg_unlock_node(rn); |
d62a17ae | 1840 | |
1841 | if (!have_usable_route) { | |
1842 | struct prefix *pfx_mon = prefix_new(); | |
1843 | prefix_copy(pfx_mon, prefix); | |
1844 | if (!skiplist_insert(it->monitor_exterior_orphans, info, | |
1845 | pfx_mon)) { | |
1846 | ||
18ee8310 | 1847 | bgp_path_info_lock(info); |
d62a17ae | 1848 | } |
1849 | } | |
1850 | } | |
65efcfce LB |
1851 | } |
1852 | ||
d62a17ae | 1853 | void vnc_import_bgp_exterior_add_route( |
5a1ae2c2 DS |
1854 | struct bgp *bgp, /* exterior instance, we hope */ |
1855 | const struct prefix *prefix, /* unicast prefix */ | |
1856 | struct bgp_path_info *info) /* unicast info */ | |
65efcfce | 1857 | { |
d62a17ae | 1858 | vnc_import_bgp_exterior_add_route_it(bgp, prefix, info, NULL); |
65efcfce LB |
1859 | } |
1860 | ||
1861 | /* | |
1862 | * There should be only one of these per prefix at a time. | |
1863 | * This should probably be called as a result of selection operation. | |
1864 | * | |
1865 | * NB should be called espacially for bgp instances that are named, | |
1866 | * because the exterior routes will always come from one of those. | |
1867 | * We filter here on the instance name to make sure we get only the | |
1868 | * right routes. | |
1869 | */ | |
d62a17ae | 1870 | void vnc_import_bgp_exterior_del_route( |
5a1ae2c2 DS |
1871 | struct bgp *bgp, const struct prefix *prefix, /* unicast prefix */ |
1872 | struct bgp_path_info *info) /* unicast info */ | |
65efcfce | 1873 | { |
d62a17ae | 1874 | struct rfapi *h; |
1875 | struct rfapi_cfg *hc; | |
1876 | struct rfapi_import_table *it; | |
1877 | struct prefix pfx_orig_nexthop; | |
1878 | afi_t afi = family2afi(prefix->family); | |
1879 | struct bgp *bgp_default = bgp_get_default(); | |
1880 | ||
1881 | if (!bgp_default) | |
1882 | return; | |
1883 | ||
1884 | memset(&pfx_orig_nexthop, 0, | |
1885 | sizeof(struct prefix)); /* keep valgrind happy */ | |
1886 | ||
1887 | h = bgp_default->rfapi; | |
1888 | hc = bgp_default->rfapi_cfg; | |
1889 | ||
1890 | if (!h || !hc) { | |
1891 | vnc_zlog_debug_verbose( | |
1892 | "%s: rfapi or rfapi_cfg not instantiated, skipping", | |
1893 | __func__); | |
1894 | return; | |
1895 | } | |
1896 | if (!hc->redist_bgp_exterior_view) { | |
1897 | vnc_zlog_debug_verbose("%s: exterior view not set, skipping", | |
1898 | __func__); | |
1899 | return; | |
1900 | } | |
1901 | if (bgp != hc->redist_bgp_exterior_view) { | |
1902 | vnc_zlog_debug_verbose( | |
1903 | "%s: bgp %p != hc->redist_bgp_exterior_view %p, skipping", | |
1904 | __func__, bgp, hc->redist_bgp_exterior_view); | |
1905 | return; | |
1906 | } | |
1907 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { | |
1908 | vnc_zlog_debug_verbose( | |
1909 | "%s: redist of exterior routes no enabled, skipping", | |
1910 | __func__); | |
1911 | return; | |
1912 | } | |
1913 | ||
d62a17ae | 1914 | /* |
1915 | * Extract nexthop from exterior route | |
1916 | * | |
1917 | * Incoming prefix is unicast. If v6, it is in multiprotocol area, | |
1918 | * but if v4 it is in attr->nexthop | |
1919 | */ | |
1920 | rfapiUnicastNexthop2Prefix(afi, info->attr, &pfx_orig_nexthop); | |
1921 | ||
1922 | for (it = h->imports; it; it = it->next) { | |
fe08ba7e DS |
1923 | struct agg_table *table; |
1924 | struct agg_node *rn; | |
1925 | struct agg_node *par; | |
40381db7 | 1926 | struct bgp_path_info *bpi_interior; |
d62a17ae | 1927 | int have_usable_route; |
1928 | ||
1929 | table = it->imported_vpn[afi]; | |
1930 | ||
fe08ba7e | 1931 | for (rn = agg_node_match(table, &pfx_orig_nexthop), |
d62a17ae | 1932 | have_usable_route = 0; |
1933 | (!have_usable_route) && rn;) { | |
1934 | ||
40381db7 DS |
1935 | for (bpi_interior = rn->info; bpi_interior; |
1936 | bpi_interior = bpi_interior->next) { | |
d62a17ae | 1937 | struct prefix_rd *prd; |
d7c0a89a | 1938 | uint32_t label = 0; |
d62a17ae | 1939 | |
40381db7 | 1940 | if (!is_usable_interior_route(bpi_interior)) |
d62a17ae | 1941 | continue; |
1942 | ||
1943 | /* | |
1944 | * have a legitimate route to exterior's nexthop | |
1945 | * via NVE. | |
1946 | * | |
1947 | * Import unicast route to the import table | |
1948 | */ | |
1949 | have_usable_route = 1; | |
1950 | ||
40381db7 DS |
1951 | if (bpi_interior->extra) { |
1952 | prd = &bpi_interior->extra->vnc.import | |
d62a17ae | 1953 | .rd; |
1954 | label = decode_label( | |
40381db7 | 1955 | &bpi_interior->extra->label[0]); |
d62a17ae | 1956 | } else |
1957 | prd = NULL; | |
1958 | ||
1959 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 1960 | it, FIF_ACTION_KILL, bpi_interior->peer, |
d62a17ae | 1961 | NULL, /* rfd */ |
1962 | prefix, NULL, afi, prd, | |
40381db7 | 1963 | bpi_interior->attr, |
d62a17ae | 1964 | ZEBRA_ROUTE_BGP_DIRECT_EXT, |
1965 | BGP_ROUTE_REDISTRIBUTE, &label); | |
1966 | ||
1967 | /* | |
1968 | * Delete monitor | |
1969 | * | |
1970 | * TBD factor this out into its own function | |
1971 | */ | |
1972 | { | |
1973 | if (RFAPI_MONITOR_EXTERIOR(rn) | |
1974 | ->source) { | |
1975 | if (!skiplist_delete( | |
1976 | RFAPI_MONITOR_EXTERIOR( | |
1977 | rn) | |
1978 | ->source, | |
1979 | info, NULL)) { | |
1980 | ||
18ee8310 DS |
1981 | bgp_path_info_unlock( |
1982 | info); | |
fe08ba7e | 1983 | agg_unlock_node( |
d62a17ae | 1984 | rn); /* sl entry |
fe08ba7e | 1985 | */ |
d62a17ae | 1986 | } |
1987 | if (skiplist_empty( | |
1988 | RFAPI_MONITOR_EXTERIOR( | |
1989 | rn) | |
1990 | ->source)) { | |
1991 | skiplist_free( | |
1992 | RFAPI_MONITOR_EXTERIOR( | |
1993 | rn) | |
1994 | ->source); | |
1995 | RFAPI_MONITOR_EXTERIOR( | |
1996 | rn) | |
1997 | ->source = NULL; | |
fe08ba7e | 1998 | agg_unlock_node( |
d62a17ae | 1999 | rn); /* skiplist |
2000 | itself | |
2001 | */ | |
2002 | } | |
2003 | } | |
2004 | } | |
2005 | } | |
fe08ba7e | 2006 | par = agg_node_parent(rn); |
d62a17ae | 2007 | if (par) |
fe08ba7e DS |
2008 | agg_lock_node(par); |
2009 | agg_unlock_node(rn); | |
d62a17ae | 2010 | rn = par; |
2011 | } | |
2012 | if (rn) | |
fe08ba7e | 2013 | agg_unlock_node(rn); |
d62a17ae | 2014 | |
2015 | if (!have_usable_route) { | |
2016 | if (!skiplist_delete(it->monitor_exterior_orphans, info, | |
2017 | NULL)) { | |
2018 | ||
18ee8310 | 2019 | bgp_path_info_unlock(info); |
d62a17ae | 2020 | } |
2021 | } | |
2022 | } | |
65efcfce LB |
2023 | } |
2024 | ||
2025 | /* | |
2026 | * This function should be called after a new interior VPN route | |
2027 | * has been added to an import_table. | |
2028 | * | |
2029 | * NB should also be called whenever an existing vpn interior route | |
2030 | * becomes valid (e.g., valid_interior_count is inremented) | |
2031 | */ | |
d62a17ae | 2032 | void vnc_import_bgp_exterior_add_route_interior( |
2033 | struct bgp *bgp, struct rfapi_import_table *it, | |
40381db7 DS |
2034 | struct agg_node *rn_interior, /* VPN IT node */ |
2035 | struct bgp_path_info *bpi_interior) /* VPN IT route */ | |
65efcfce | 2036 | { |
26a3ffd6 DS |
2037 | const struct prefix *p = agg_node_get_prefix(rn_interior); |
2038 | afi_t afi = family2afi(p->family); | |
fe08ba7e | 2039 | struct agg_node *par; |
40381db7 | 2040 | struct bgp_path_info *bpi_exterior; |
d62a17ae | 2041 | struct prefix *pfx_exterior; /* exterior pfx */ |
2042 | void *cursor; | |
2043 | int rc; | |
2044 | struct list *list_adopted; | |
2045 | ||
2046 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
2047 | ||
40381db7 | 2048 | if (!is_usable_interior_route(bpi_interior)) { |
d62a17ae | 2049 | vnc_zlog_debug_verbose( |
2050 | "%s: not usable interior route, skipping", __func__); | |
2051 | return; | |
2052 | } | |
2053 | ||
2054 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { | |
2055 | vnc_zlog_debug_verbose( | |
2056 | "%s: redist of exterior routes no enabled, skipping", | |
2057 | __func__); | |
2058 | return; | |
2059 | } | |
2060 | ||
2061 | if (it == bgp->rfapi->it_ce) { | |
2062 | vnc_zlog_debug_verbose("%s: import table is it_ce, skipping", | |
2063 | __func__); | |
2064 | return; | |
2065 | } | |
2066 | ||
2067 | /*debugging */ | |
26a3ffd6 DS |
2068 | vnc_zlog_debug_verbose("%s: interior prefix=%pRN, bpi type=%d", |
2069 | __func__, rn_interior, bpi_interior->type); | |
d62a17ae | 2070 | |
2071 | if (RFAPI_HAS_MONITOR_EXTERIOR(rn_interior)) { | |
2072 | ||
2073 | int count = 0; /* debugging */ | |
2074 | ||
2075 | vnc_zlog_debug_verbose( | |
2076 | "%s: has exterior monitor; ext src: %p", __func__, | |
2077 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source); | |
2078 | ||
2079 | /* | |
2080 | * There is a monitor here already. Therefore, we do not need | |
2081 | * to do any pulldown. Just construct exterior routes based | |
2082 | * on the new interior route. | |
2083 | */ | |
2084 | cursor = NULL; | |
2085 | for (rc = skiplist_next( | |
2086 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2087 | (void **)&bpi_exterior, (void **)&pfx_exterior, |
d62a17ae | 2088 | &cursor); |
2089 | !rc; rc = skiplist_next( | |
2090 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 DS |
2091 | (void **)&bpi_exterior, |
2092 | (void **)&pfx_exterior, &cursor)) { | |
d62a17ae | 2093 | |
2094 | struct prefix_rd *prd; | |
2095 | struct attr new_attr; | |
d7c0a89a | 2096 | uint32_t label = 0; |
d62a17ae | 2097 | |
2098 | ||
2099 | ++count; /* debugging */ | |
2100 | ||
40381db7 | 2101 | assert(bpi_exterior); |
d62a17ae | 2102 | assert(pfx_exterior); |
2103 | ||
40381db7 DS |
2104 | if (bpi_interior->extra) { |
2105 | prd = &bpi_interior->extra->vnc.import.rd; | |
d62a17ae | 2106 | label = decode_label( |
40381db7 | 2107 | &bpi_interior->extra->label[0]); |
d62a17ae | 2108 | } else |
2109 | prd = NULL; | |
2110 | ||
2111 | /* use local_pref from unicast route */ | |
2112 | memset(&new_attr, 0, sizeof(struct attr)); | |
6f4f49b2 | 2113 | new_attr = *bpi_interior->attr; |
40381db7 DS |
2114 | if (bpi_exterior |
2115 | && (bpi_exterior->attr->flag | |
d62a17ae | 2116 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF))) { |
2117 | new_attr.local_pref = | |
40381db7 | 2118 | bpi_exterior->attr->local_pref; |
d62a17ae | 2119 | new_attr.flag |= |
2120 | ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF); | |
2121 | } | |
2122 | ||
2123 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 2124 | it, FIF_ACTION_UPDATE, bpi_interior->peer, |
d62a17ae | 2125 | NULL, /* rfd */ |
2126 | pfx_exterior, NULL, afi, prd, &new_attr, | |
2127 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
2128 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2129 | } | |
2130 | vnc_zlog_debug_verbose( | |
2131 | "%s: finished constructing exteriors based on existing monitors", | |
2132 | __func__); | |
2133 | return; | |
2134 | } | |
2135 | ||
2136 | vnc_zlog_debug_verbose("%s: no exterior monitor", __func__); | |
2137 | ||
2138 | /* | |
2139 | * No monitor at this node. Is this the first valid interior | |
2140 | * route at this node? | |
2141 | */ | |
2142 | if (RFAPI_MONITOR_EXTERIOR(rn_interior)->valid_interior_count > 1) { | |
2143 | vnc_zlog_debug_verbose( | |
2144 | "%s: new interior route not first valid one, skipping pulldown", | |
2145 | __func__); | |
2146 | return; | |
2147 | } | |
2148 | ||
2149 | /* | |
2150 | * Look up the tree for possible pulldown candidates. | |
2151 | * Find nearest parent with an exterior route monitor | |
2152 | */ | |
fe08ba7e DS |
2153 | for (par = agg_node_parent(rn_interior); par; |
2154 | par = agg_node_parent(par)) { | |
d62a17ae | 2155 | if (RFAPI_HAS_MONITOR_EXTERIOR(par)) |
2156 | break; | |
2157 | } | |
2158 | ||
2159 | if (par) { | |
2160 | ||
2161 | vnc_zlog_debug_verbose( | |
2162 | "%s: checking parent %p for possible pulldowns", | |
2163 | __func__, par); | |
2164 | ||
2165 | /* check monitors at par for possible pulldown */ | |
2166 | cursor = NULL; | |
2167 | for (rc = skiplist_next(RFAPI_MONITOR_EXTERIOR(par)->source, | |
40381db7 | 2168 | (void **)&bpi_exterior, |
d62a17ae | 2169 | (void **)&pfx_exterior, &cursor); |
2170 | !rc; | |
2171 | rc = skiplist_next(RFAPI_MONITOR_EXTERIOR(par)->source, | |
40381db7 | 2172 | (void **)&bpi_exterior, |
d62a17ae | 2173 | (void **)&pfx_exterior, &cursor)) { |
2174 | ||
2175 | struct prefix pfx_nexthop; | |
2176 | ||
2177 | memset(&pfx_nexthop, 0, | |
2178 | sizeof(struct prefix)); /* keep valgrind happy */ | |
2179 | ||
2180 | /* check original nexthop for prefix match */ | |
40381db7 | 2181 | rfapiUnicastNexthop2Prefix(afi, bpi_exterior->attr, |
d62a17ae | 2182 | &pfx_nexthop); |
2183 | ||
26a3ffd6 | 2184 | if (prefix_match(p, &pfx_nexthop)) { |
d62a17ae | 2185 | |
40381db7 | 2186 | struct bgp_path_info *bpi; |
d62a17ae | 2187 | struct prefix_rd *prd; |
2188 | struct attr new_attr; | |
d7c0a89a | 2189 | uint32_t label = 0; |
d62a17ae | 2190 | |
2191 | /* do pull-down */ | |
2192 | ||
2193 | /* | |
2194 | * add monitor to longer prefix | |
2195 | */ | |
2196 | struct prefix *pfx_mon = prefix_new(); | |
2197 | prefix_copy(pfx_mon, pfx_exterior); | |
2198 | if (!RFAPI_MONITOR_EXTERIOR(rn_interior) | |
2199 | ->source) { | |
2200 | RFAPI_MONITOR_EXTERIOR(rn_interior) | |
2201 | ->source = skiplist_new( | |
63265b5c | 2202 | 0, NULL, prefix_free_lists); |
fe08ba7e | 2203 | agg_lock_node(rn_interior); |
d62a17ae | 2204 | } |
2205 | skiplist_insert( | |
2206 | RFAPI_MONITOR_EXTERIOR(rn_interior) | |
2207 | ->source, | |
40381db7 | 2208 | bpi_exterior, pfx_mon); |
fe08ba7e | 2209 | agg_lock_node(rn_interior); |
d62a17ae | 2210 | |
2211 | /* | |
2212 | * Delete constructed exterior routes based on | |
2213 | * parent routes. | |
2214 | */ | |
40381db7 | 2215 | for (bpi = par->info; bpi; bpi = bpi->next) { |
d62a17ae | 2216 | |
40381db7 DS |
2217 | if (bpi->extra) { |
2218 | prd = &bpi->extra->vnc.import | |
2219 | .rd; | |
d62a17ae | 2220 | label = decode_label( |
40381db7 | 2221 | &bpi->extra->label[0]); |
d62a17ae | 2222 | } else |
2223 | prd = NULL; | |
2224 | ||
2225 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 2226 | it, FIF_ACTION_KILL, bpi->peer, |
d62a17ae | 2227 | NULL, /* rfd */ |
2228 | pfx_exterior, NULL, afi, prd, | |
40381db7 | 2229 | bpi->attr, |
d62a17ae | 2230 | ZEBRA_ROUTE_BGP_DIRECT_EXT, |
2231 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2232 | } | |
2233 | ||
2234 | ||
2235 | /* | |
2236 | * Add constructed exterior routes based on | |
2237 | * the new interior route at longer prefix. | |
2238 | */ | |
40381db7 DS |
2239 | if (bpi_interior->extra) { |
2240 | prd = &bpi_interior->extra->vnc.import | |
d62a17ae | 2241 | .rd; |
2242 | label = decode_label( | |
40381db7 | 2243 | &bpi_interior->extra->label[0]); |
d62a17ae | 2244 | } else |
2245 | prd = NULL; | |
2246 | ||
2247 | /* use local_pref from unicast route */ | |
2248 | memset(&new_attr, 0, sizeof(struct attr)); | |
6f4f49b2 | 2249 | new_attr = *bpi_interior->attr; |
40381db7 DS |
2250 | if (bpi_exterior |
2251 | && (bpi_exterior->attr->flag | |
d62a17ae | 2252 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF))) { |
2253 | new_attr.local_pref = | |
40381db7 | 2254 | bpi_exterior->attr->local_pref; |
d62a17ae | 2255 | new_attr.flag |= ATTR_FLAG_BIT( |
2256 | BGP_ATTR_LOCAL_PREF); | |
2257 | } | |
2258 | ||
2259 | rfapiBgpInfoFilteredImportVPN( | |
2260 | it, FIF_ACTION_UPDATE, | |
40381db7 | 2261 | bpi_interior->peer, NULL, /* rfd */ |
d62a17ae | 2262 | pfx_exterior, NULL, afi, prd, &new_attr, |
2263 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
2264 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2265 | } | |
2266 | } | |
2267 | ||
2268 | /* | |
2269 | * The only monitors at rn_interior are the ones we added just | |
2270 | * above, so we can use the rn_interior list to identify which | |
2271 | * monitors to delete from the parent. | |
2272 | */ | |
2273 | cursor = NULL; | |
2274 | for (rc = skiplist_next( | |
2275 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2276 | (void **)&bpi_exterior, NULL, &cursor); |
d62a17ae | 2277 | !rc; rc = skiplist_next( |
2278 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2279 | (void **)&bpi_exterior, NULL, &cursor)) { |
d62a17ae | 2280 | |
2281 | ||
2282 | skiplist_delete(RFAPI_MONITOR_EXTERIOR(par)->source, | |
40381db7 | 2283 | bpi_exterior, NULL); |
fe08ba7e | 2284 | agg_unlock_node(par); /* sl entry */ |
d62a17ae | 2285 | } |
2286 | if (skiplist_empty(RFAPI_MONITOR_EXTERIOR(par)->source)) { | |
2287 | skiplist_free(RFAPI_MONITOR_EXTERIOR(par)->source); | |
2288 | RFAPI_MONITOR_EXTERIOR(par)->source = NULL; | |
fe08ba7e | 2289 | agg_unlock_node(par); /* sl itself */ |
d62a17ae | 2290 | } |
2291 | } | |
2292 | ||
2293 | vnc_zlog_debug_verbose("%s: checking orphans", __func__); | |
2294 | ||
2295 | /* | |
2296 | * See if any orphans can be pulled down to the current node | |
2297 | */ | |
2298 | cursor = NULL; | |
2299 | list_adopted = NULL; | |
2300 | for (rc = skiplist_next(it->monitor_exterior_orphans, | |
40381db7 | 2301 | (void **)&bpi_exterior, (void **)&pfx_exterior, |
d62a17ae | 2302 | &cursor); |
2303 | !rc; rc = skiplist_next(it->monitor_exterior_orphans, | |
40381db7 | 2304 | (void **)&bpi_exterior, |
d62a17ae | 2305 | (void **)&pfx_exterior, &cursor)) { |
2306 | ||
2307 | struct prefix pfx_nexthop; | |
872ed4c7 | 2308 | char buf[PREFIX_STRLEN]; |
d62a17ae | 2309 | afi_t afi_exterior = family2afi(pfx_exterior->family); |
2310 | ||
2311 | prefix2str(pfx_exterior, buf, sizeof(buf)); | |
d62a17ae | 2312 | vnc_zlog_debug_verbose( |
2313 | "%s: checking exterior orphan at prefix %s", __func__, | |
2314 | buf); | |
2315 | ||
2316 | if (afi_exterior != afi) { | |
2317 | vnc_zlog_debug_verbose( | |
2318 | "%s: exterior orphan afi %d != interior afi %d, skip", | |
2319 | __func__, afi_exterior, afi); | |
2320 | continue; | |
2321 | } | |
2322 | ||
2323 | /* check original nexthop for prefix match */ | |
40381db7 | 2324 | rfapiUnicastNexthop2Prefix(afi, bpi_exterior->attr, |
d62a17ae | 2325 | &pfx_nexthop); |
2326 | ||
26a3ffd6 | 2327 | if (prefix_match(p, &pfx_nexthop)) { |
d62a17ae | 2328 | |
2329 | struct prefix_rd *prd; | |
2330 | struct attr new_attr; | |
d7c0a89a | 2331 | uint32_t label = 0; |
d62a17ae | 2332 | |
2333 | /* do pull-down */ | |
2334 | ||
2335 | /* | |
2336 | * add monitor to longer prefix | |
2337 | */ | |
2338 | ||
2339 | struct prefix *pfx_mon = prefix_new(); | |
2340 | prefix_copy(pfx_mon, pfx_exterior); | |
2341 | if (!RFAPI_MONITOR_EXTERIOR(rn_interior)->source) { | |
2342 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source = | |
2343 | skiplist_new( | |
63265b5c | 2344 | 0, NULL, prefix_free_lists); |
fe08ba7e | 2345 | agg_lock_node(rn_interior); /* sl */ |
d62a17ae | 2346 | } |
2347 | skiplist_insert( | |
2348 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2349 | bpi_exterior, pfx_mon); |
fe08ba7e | 2350 | agg_lock_node(rn_interior); /* sl entry */ |
d62a17ae | 2351 | if (!list_adopted) { |
2352 | list_adopted = list_new(); | |
2353 | } | |
40381db7 | 2354 | listnode_add(list_adopted, bpi_exterior); |
d62a17ae | 2355 | |
2356 | /* | |
2357 | * Add constructed exterior routes based on the | |
2358 | * new interior route at the longer prefix. | |
2359 | */ | |
40381db7 DS |
2360 | if (bpi_interior->extra) { |
2361 | prd = &bpi_interior->extra->vnc.import.rd; | |
d62a17ae | 2362 | label = decode_label( |
40381db7 | 2363 | &bpi_interior->extra->label[0]); |
d62a17ae | 2364 | } else |
2365 | prd = NULL; | |
2366 | ||
2367 | /* use local_pref from unicast route */ | |
2368 | memset(&new_attr, 0, sizeof(struct attr)); | |
6f4f49b2 | 2369 | new_attr = *bpi_interior->attr; |
40381db7 DS |
2370 | if (bpi_exterior |
2371 | && (bpi_exterior->attr->flag | |
d62a17ae | 2372 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF))) { |
2373 | new_attr.local_pref = | |
40381db7 | 2374 | bpi_exterior->attr->local_pref; |
d62a17ae | 2375 | new_attr.flag |= |
2376 | ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF); | |
2377 | } | |
2378 | ||
2379 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 2380 | it, FIF_ACTION_UPDATE, bpi_interior->peer, |
d62a17ae | 2381 | NULL, /* rfd */ |
2382 | pfx_exterior, NULL, afi, prd, &new_attr, | |
2383 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
2384 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2385 | } | |
2386 | } | |
2387 | if (list_adopted) { | |
2388 | struct listnode *node; | |
40381db7 | 2389 | struct agg_node *an_bpi_exterior; |
d62a17ae | 2390 | |
40381db7 DS |
2391 | for (ALL_LIST_ELEMENTS_RO(list_adopted, node, |
2392 | an_bpi_exterior)) { | |
d62a17ae | 2393 | skiplist_delete(it->monitor_exterior_orphans, |
40381db7 | 2394 | an_bpi_exterior, NULL); |
d62a17ae | 2395 | } |
6a154c88 | 2396 | list_delete(&list_adopted); |
d62a17ae | 2397 | } |
65efcfce LB |
2398 | } |
2399 | ||
2400 | /* | |
2401 | * This function should be called after an interior VPN route | |
2402 | * has been deleted from an import_table. | |
40381db7 | 2403 | * bpi_interior must still be valid, but it must already be detached |
65efcfce LB |
2404 | * from its route node and the route node's valid_interior_count |
2405 | * must already be decremented. | |
2406 | * | |
2407 | * NB should also be called whenever an existing vpn interior route | |
2408 | * becomes invalid (e.g., valid_interior_count is decremented) | |
2409 | */ | |
d62a17ae | 2410 | void vnc_import_bgp_exterior_del_route_interior( |
2411 | struct bgp *bgp, struct rfapi_import_table *it, | |
40381db7 DS |
2412 | struct agg_node *rn_interior, /* VPN IT node */ |
2413 | struct bgp_path_info *bpi_interior) /* VPN IT route */ | |
65efcfce | 2414 | { |
26a3ffd6 DS |
2415 | const struct prefix *p = agg_node_get_prefix(rn_interior); |
2416 | afi_t afi = family2afi(p->family); | |
fe08ba7e | 2417 | struct agg_node *par; |
40381db7 | 2418 | struct bgp_path_info *bpi_exterior; |
d62a17ae | 2419 | struct prefix *pfx_exterior; /* exterior pfx */ |
2420 | void *cursor; | |
2421 | int rc; | |
2422 | ||
40381db7 | 2423 | if (!VALID_INTERIOR_TYPE(bpi_interior->type)) { |
d62a17ae | 2424 | vnc_zlog_debug_verbose( |
2425 | "%s: type %d not valid interior type, skipping", | |
40381db7 | 2426 | __func__, bpi_interior->type); |
d62a17ae | 2427 | return; |
2428 | } | |
2429 | ||
2430 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { | |
2431 | vnc_zlog_debug_verbose( | |
2432 | "%s: redist of exterior routes no enabled, skipping", | |
2433 | __func__); | |
2434 | return; | |
2435 | } | |
2436 | ||
2437 | if (it == bgp->rfapi->it_ce) { | |
2438 | vnc_zlog_debug_verbose("%s: it is it_ce, skipping", __func__); | |
2439 | return; | |
2440 | } | |
2441 | ||
2442 | /* If no exterior routes depend on this prefix, nothing to do */ | |
2443 | if (!RFAPI_HAS_MONITOR_EXTERIOR(rn_interior)) { | |
2444 | vnc_zlog_debug_verbose("%s: no exterior monitor, skipping", | |
2445 | __func__); | |
2446 | return; | |
2447 | } | |
2448 | ||
2449 | /*debugging */ | |
26a3ffd6 DS |
2450 | vnc_zlog_debug_verbose("%s: interior prefix=%pRN, bpi type=%d", |
2451 | __func__, rn_interior, bpi_interior->type); | |
d62a17ae | 2452 | |
2453 | /* | |
2454 | * Remove constructed routes based on the deleted interior route | |
2455 | */ | |
2456 | cursor = NULL; | |
2457 | for (rc = skiplist_next(RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2458 | (void **)&bpi_exterior, (void **)&pfx_exterior, |
d62a17ae | 2459 | &cursor); |
2460 | !rc; | |
2461 | rc = skiplist_next(RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2462 | (void **)&bpi_exterior, (void **)&pfx_exterior, |
d62a17ae | 2463 | &cursor)) { |
2464 | ||
2465 | struct prefix_rd *prd; | |
d7c0a89a | 2466 | uint32_t label = 0; |
d62a17ae | 2467 | |
40381db7 DS |
2468 | if (bpi_interior->extra) { |
2469 | prd = &bpi_interior->extra->vnc.import.rd; | |
2470 | label = decode_label(&bpi_interior->extra->label[0]); | |
d62a17ae | 2471 | } else |
2472 | prd = NULL; | |
2473 | ||
2474 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 DS |
2475 | it, FIF_ACTION_KILL, bpi_interior->peer, NULL, /* rfd */ |
2476 | pfx_exterior, NULL, afi, prd, bpi_interior->attr, | |
d62a17ae | 2477 | ZEBRA_ROUTE_BGP_DIRECT_EXT, BGP_ROUTE_REDISTRIBUTE, |
2478 | &label); | |
2479 | } | |
2480 | ||
2481 | /* | |
2482 | * If there are no remaining valid interior routes at this prefix, | |
2483 | * we need to look up the tree for a possible node to move monitors to | |
2484 | */ | |
2485 | if (RFAPI_MONITOR_EXTERIOR(rn_interior)->valid_interior_count) { | |
2486 | vnc_zlog_debug_verbose( | |
2487 | "%s: interior routes still present, skipping", | |
2488 | __func__); | |
2489 | return; | |
2490 | } | |
65efcfce | 2491 | |
d62a17ae | 2492 | /* |
2493 | * Find nearest parent with at least one valid interior route | |
2494 | * If none is found, par will end up NULL, and we will move | |
2495 | * the monitors to the orphan list for this import table | |
2496 | */ | |
fe08ba7e DS |
2497 | for (par = agg_node_parent(rn_interior); par; |
2498 | par = agg_node_parent(par)) { | |
d62a17ae | 2499 | if (RFAPI_MONITOR_EXTERIOR(par)->valid_interior_count) |
2500 | break; | |
2501 | } | |
2502 | ||
2503 | vnc_zlog_debug_verbose("%s: par=%p, ext src: %p", __func__, par, | |
2504 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source); | |
2505 | ||
2506 | /* move all monitors */ | |
2507 | /* | |
2508 | * We will use and delete every element of the source skiplist | |
2509 | */ | |
2510 | while (!skiplist_first(RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 DS |
2511 | (void **)&bpi_exterior, |
2512 | (void **)&pfx_exterior)) { | |
d62a17ae | 2513 | |
2514 | struct prefix *pfx_mon = prefix_new(); | |
2515 | ||
2516 | prefix_copy(pfx_mon, pfx_exterior); | |
2517 | ||
2518 | if (par) { | |
2519 | ||
40381db7 | 2520 | struct bgp_path_info *bpi; |
d62a17ae | 2521 | |
2522 | /* | |
2523 | * Add monitor to parent node | |
2524 | */ | |
2525 | if (!RFAPI_MONITOR_EXTERIOR(par)->source) { | |
2526 | RFAPI_MONITOR_EXTERIOR(par)->source = | |
2527 | skiplist_new( | |
63265b5c | 2528 | 0, NULL, prefix_free_lists); |
fe08ba7e | 2529 | agg_lock_node(par); /* sl */ |
d62a17ae | 2530 | } |
2531 | skiplist_insert(RFAPI_MONITOR_EXTERIOR(par)->source, | |
40381db7 | 2532 | bpi_exterior, pfx_mon); |
fe08ba7e | 2533 | agg_lock_node(par); /* sl entry */ |
d62a17ae | 2534 | |
2535 | /* Add constructed exterior routes based on parent */ | |
40381db7 | 2536 | for (bpi = par->info; bpi; bpi = bpi->next) { |
d62a17ae | 2537 | |
2538 | struct prefix_rd *prd; | |
2539 | struct attr new_attr; | |
d7c0a89a | 2540 | uint32_t label = 0; |
d62a17ae | 2541 | |
40381db7 | 2542 | if (bpi->type == ZEBRA_ROUTE_BGP_DIRECT_EXT) |
d62a17ae | 2543 | continue; |
2544 | ||
40381db7 DS |
2545 | if (bpi->extra) { |
2546 | prd = &bpi->extra->vnc.import.rd; | |
317f1fe0 | 2547 | label = decode_label( |
40381db7 | 2548 | &bpi->extra->label[0]); |
d62a17ae | 2549 | } else |
2550 | prd = NULL; | |
2551 | ||
2552 | /* use local_pref from unicast route */ | |
2553 | memset(&new_attr, 0, sizeof(struct attr)); | |
6f4f49b2 | 2554 | new_attr = *bpi->attr; |
40381db7 DS |
2555 | if (bpi_exterior |
2556 | && (bpi_exterior->attr->flag | |
d62a17ae | 2557 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF))) { |
2558 | new_attr.local_pref = | |
40381db7 | 2559 | bpi_exterior->attr->local_pref; |
d62a17ae | 2560 | new_attr.flag |= ATTR_FLAG_BIT( |
2561 | BGP_ATTR_LOCAL_PREF); | |
2562 | } | |
2563 | ||
2564 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 2565 | it, FIF_ACTION_UPDATE, bpi->peer, |
d62a17ae | 2566 | NULL, /* rfd */ |
2567 | pfx_exterior, NULL, afi, prd, &new_attr, | |
2568 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
2569 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2570 | } | |
2571 | ||
2572 | } else { | |
2573 | ||
2574 | /* | |
2575 | * No interior route for exterior's nexthop. Save | |
2576 | * monitor | |
2577 | * in orphan list to await future route. | |
2578 | */ | |
2579 | skiplist_insert(it->monitor_exterior_orphans, | |
40381db7 | 2580 | bpi_exterior, pfx_mon); |
d62a17ae | 2581 | } |
2582 | ||
2583 | skiplist_delete_first( | |
2584 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source); | |
fe08ba7e | 2585 | agg_unlock_node(rn_interior); /* sl entry */ |
d62a17ae | 2586 | } |
2587 | if (skiplist_empty(RFAPI_MONITOR_EXTERIOR(rn_interior)->source)) { | |
2588 | skiplist_free(RFAPI_MONITOR_EXTERIOR(rn_interior)->source); | |
2589 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source = NULL; | |
fe08ba7e | 2590 | agg_unlock_node(rn_interior); /* sl itself */ |
d62a17ae | 2591 | } |
65efcfce LB |
2592 | } |
2593 | ||
2594 | /*********************************************************************** | |
2595 | * Generic add/delete unicast routes | |
2596 | ***********************************************************************/ | |
2597 | ||
5a1ae2c2 | 2598 | void vnc_import_bgp_add_route(struct bgp *bgp, const struct prefix *prefix, |
4b7e6066 | 2599 | struct bgp_path_info *info) |
65efcfce | 2600 | { |
d62a17ae | 2601 | afi_t afi = family2afi(prefix->family); |
65efcfce | 2602 | |
7f88f54a | 2603 | if (VNC_DEBUG(VERBOSE)) { |
d62a17ae | 2604 | struct prefix pfx_nexthop; |
872ed4c7 DS |
2605 | char buf[PREFIX_STRLEN]; |
2606 | char buf_nh[PREFIX_STRLEN]; | |
65efcfce | 2607 | |
872ed4c7 | 2608 | prefix2str(prefix, buf, sizeof(buf)); |
d62a17ae | 2609 | rfapiUnicastNexthop2Prefix(afi, info->attr, &pfx_nexthop); |
872ed4c7 | 2610 | prefix2str(&pfx_nexthop, buf_nh, sizeof(buf_nh)); |
65efcfce | 2611 | |
d62a17ae | 2612 | vnc_zlog_debug_verbose("%s: pfx %s, nh %s", __func__, buf, |
2613 | buf_nh); | |
2614 | } | |
65efcfce | 2615 | #if DEBUG_RHN_LIST |
d62a17ae | 2616 | print_rhn_list(__func__, "ENTER "); |
65efcfce | 2617 | #endif |
d62a17ae | 2618 | VNC_RHNCK(enter); |
2619 | ||
2620 | if (!afi) { | |
450971aa | 2621 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of prefix", |
1c50c1c0 | 2622 | __func__); |
d62a17ae | 2623 | return; |
2624 | } | |
2625 | ||
2626 | if (!bgp->rfapi_cfg) { | |
2627 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
2628 | __func__); | |
2629 | return; | |
2630 | } | |
2631 | ||
2632 | /* check vnc redist flag for bgp direct routes */ | |
2633 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
2634 | vnc_zlog_debug_verbose( | |
2635 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
2636 | __func__, afi, ZEBRA_ROUTE_BGP_DIRECT); | |
2637 | return; | |
2638 | } | |
2639 | ||
2640 | switch (bgp->rfapi_cfg->redist_mode) { | |
2641 | case VNC_REDIST_MODE_PLAIN: | |
2642 | vnc_import_bgp_add_route_mode_plain(bgp, prefix, info); | |
2643 | break; | |
2644 | ||
2645 | case VNC_REDIST_MODE_RFG: | |
2646 | if (bgp->rfapi_cfg->rfg_redist) | |
2647 | vnc_import_bgp_add_route_mode_nvegroup( | |
2648 | bgp, prefix, info, bgp->rfapi_cfg->rfg_redist); | |
2649 | else | |
2650 | vnc_zlog_debug_verbose("%s: mode RFG but no redist RFG", | |
2651 | __func__); | |
2652 | break; | |
2653 | ||
2654 | case VNC_REDIST_MODE_RESOLVE_NVE: | |
2655 | vnc_import_bgp_add_route_mode_resolve_nve(bgp, prefix, info); | |
2656 | break; | |
2657 | } | |
65efcfce | 2658 | #if DEBUG_RHN_LIST |
d62a17ae | 2659 | print_rhn_list(__func__, "LEAVE "); |
65efcfce | 2660 | #endif |
d62a17ae | 2661 | VNC_RHNCK(leave); |
65efcfce LB |
2662 | } |
2663 | ||
2664 | /* | |
2665 | * "Withdrawing a Route" import process | |
2666 | */ | |
5a1ae2c2 | 2667 | void vnc_import_bgp_del_route(struct bgp *bgp, const struct prefix *prefix, |
4b7e6066 | 2668 | struct bgp_path_info *info) /* unicast info */ |
65efcfce | 2669 | { |
d62a17ae | 2670 | afi_t afi = family2afi(prefix->family); |
65efcfce | 2671 | |
d62a17ae | 2672 | assert(afi); |
65efcfce | 2673 | |
d62a17ae | 2674 | { |
2675 | struct prefix pfx_nexthop; | |
872ed4c7 DS |
2676 | char buf[PREFIX_STRLEN]; |
2677 | char buf_nh[PREFIX_STRLEN]; | |
65efcfce | 2678 | |
872ed4c7 | 2679 | prefix2str(prefix, buf, sizeof(buf)); |
d62a17ae | 2680 | rfapiUnicastNexthop2Prefix(afi, info->attr, &pfx_nexthop); |
872ed4c7 | 2681 | prefix2str(&pfx_nexthop, buf_nh, sizeof(buf_nh)); |
65efcfce | 2682 | |
d62a17ae | 2683 | vnc_zlog_debug_verbose("%s: pfx %s, nh %s", __func__, buf, |
2684 | buf_nh); | |
2685 | } | |
65efcfce | 2686 | #if DEBUG_RHN_LIST |
d62a17ae | 2687 | print_rhn_list(__func__, "ENTER "); |
65efcfce | 2688 | #endif |
d62a17ae | 2689 | VNC_RHNCK(enter); |
2690 | ||
2691 | if (!bgp->rfapi_cfg) { | |
2692 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
2693 | __func__); | |
2694 | return; | |
2695 | } | |
2696 | ||
2697 | /* check bgp redist flag for vnc direct ("vpn") routes */ | |
2698 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
2699 | vnc_zlog_debug_verbose( | |
2700 | "%s: bgp redistribution of afi=%d VNC direct routes is off", | |
2701 | __func__, afi); | |
2702 | return; | |
2703 | } | |
2704 | ||
2705 | switch (bgp->rfapi_cfg->redist_mode) { | |
2706 | case VNC_REDIST_MODE_PLAIN: | |
2707 | vnc_import_bgp_del_route_mode_plain(bgp, prefix, info); | |
2708 | break; | |
2709 | ||
2710 | case VNC_REDIST_MODE_RFG: | |
2711 | if (bgp->rfapi_cfg->rfg_redist) | |
2712 | vnc_import_bgp_del_route_mode_nvegroup(bgp, prefix, | |
2713 | info); | |
2714 | else | |
2715 | vnc_zlog_debug_verbose("%s: mode RFG but no redist RFG", | |
2716 | __func__); | |
2717 | break; | |
2718 | ||
2719 | case VNC_REDIST_MODE_RESOLVE_NVE: | |
2720 | vnc_import_bgp_del_route_mode_resolve_nve(bgp, afi, prefix, | |
2721 | info); | |
2722 | break; | |
2723 | } | |
65efcfce | 2724 | #if DEBUG_RHN_LIST |
d62a17ae | 2725 | print_rhn_list(__func__, "LEAVE "); |
65efcfce | 2726 | #endif |
d62a17ae | 2727 | VNC_RHNCK(leave); |
65efcfce LB |
2728 | } |
2729 | ||
2730 | ||
2731 | /*********************************************************************** | |
2732 | * Enable/Disable | |
2733 | ***********************************************************************/ | |
2734 | ||
d62a17ae | 2735 | void vnc_import_bgp_redist_enable(struct bgp *bgp, afi_t afi) |
65efcfce | 2736 | { |
d62a17ae | 2737 | /* iterate over bgp unicast v4 and v6 routes, call |
2738 | * vnc_import_bgp_add_route */ | |
65efcfce | 2739 | |
d62a17ae | 2740 | struct bgp_node *rn; |
65efcfce | 2741 | |
d62a17ae | 2742 | vnc_zlog_debug_verbose("%s: entry, afi=%d", __func__, afi); |
65efcfce | 2743 | |
d62a17ae | 2744 | if (bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { |
2745 | vnc_zlog_debug_verbose( | |
2746 | "%s: already enabled for afi %d, skipping", __func__, | |
2747 | afi); | |
2748 | return; | |
2749 | } | |
2750 | bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT] = 1; | |
65efcfce | 2751 | |
d62a17ae | 2752 | for (rn = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); rn; |
2753 | rn = bgp_route_next(rn)) { | |
65efcfce | 2754 | |
40381db7 | 2755 | struct bgp_path_info *bpi; |
65efcfce | 2756 | |
6f94b685 DS |
2757 | for (bpi = bgp_node_get_bgp_path_info(rn); bpi; |
2758 | bpi = bpi->next) { | |
65efcfce | 2759 | |
40381db7 | 2760 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 2761 | continue; |
65efcfce | 2762 | |
b54892e0 DS |
2763 | vnc_import_bgp_add_route(bgp, bgp_node_get_prefix(rn), |
2764 | bpi); | |
d62a17ae | 2765 | } |
2766 | } | |
2767 | vnc_zlog_debug_verbose( | |
2768 | "%s: set redist[afi=%d][type=%d=ZEBRA_ROUTE_BGP_DIRECT] return", | |
2769 | __func__, afi, ZEBRA_ROUTE_BGP_DIRECT); | |
65efcfce LB |
2770 | } |
2771 | ||
d62a17ae | 2772 | void vnc_import_bgp_exterior_redist_enable(struct bgp *bgp, afi_t afi) |
65efcfce | 2773 | { |
d62a17ae | 2774 | struct bgp *bgp_exterior; |
2775 | struct bgp_node *rn; | |
65efcfce | 2776 | |
d62a17ae | 2777 | bgp_exterior = bgp->rfapi_cfg->redist_bgp_exterior_view; |
65efcfce | 2778 | |
d62a17ae | 2779 | if (bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { |
2780 | vnc_zlog_debug_verbose( | |
2781 | "%s: already enabled for afi %d, skipping", __func__, | |
2782 | afi); | |
2783 | return; | |
2784 | } | |
2785 | bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT] = 1; | |
65efcfce | 2786 | |
d62a17ae | 2787 | if (!bgp_exterior) { |
2788 | vnc_zlog_debug_verbose( | |
2789 | "%s: no exterior view set yet, no routes to import yet", | |
2790 | __func__); | |
2791 | return; | |
2792 | } | |
65efcfce | 2793 | |
d62a17ae | 2794 | for (rn = bgp_table_top(bgp_exterior->rib[afi][SAFI_UNICAST]); rn; |
2795 | rn = bgp_route_next(rn)) { | |
65efcfce | 2796 | |
40381db7 | 2797 | struct bgp_path_info *bpi; |
65efcfce | 2798 | |
6f94b685 DS |
2799 | for (bpi = bgp_node_get_bgp_path_info(rn); bpi; |
2800 | bpi = bpi->next) { | |
65efcfce | 2801 | |
40381db7 | 2802 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 2803 | continue; |
65efcfce | 2804 | |
b54892e0 DS |
2805 | vnc_import_bgp_exterior_add_route( |
2806 | bgp_exterior, bgp_node_get_prefix(rn), bpi); | |
d62a17ae | 2807 | } |
2808 | } | |
2809 | vnc_zlog_debug_verbose( | |
2810 | "%s: set redist[afi=%d][type=%d=ZEBRA_ROUTE_BGP_DIRECT] return", | |
2811 | __func__, afi, ZEBRA_ROUTE_BGP_DIRECT); | |
65efcfce LB |
2812 | } |
2813 | ||
2814 | /* | |
2815 | * This function is for populating a newly-created Import Table | |
2816 | */ | |
d62a17ae | 2817 | void vnc_import_bgp_exterior_redist_enable_it( |
2818 | struct bgp *bgp, afi_t afi, struct rfapi_import_table *it_only) | |
65efcfce | 2819 | { |
d62a17ae | 2820 | struct bgp *bgp_exterior; |
2821 | struct bgp_node *rn; | |
65efcfce | 2822 | |
d62a17ae | 2823 | vnc_zlog_debug_verbose("%s: entry", __func__); |
65efcfce | 2824 | |
d62a17ae | 2825 | bgp_exterior = bgp->rfapi_cfg->redist_bgp_exterior_view; |
65efcfce | 2826 | |
d62a17ae | 2827 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { |
2828 | vnc_zlog_debug_verbose("%s: not enabled for afi %d, skipping", | |
2829 | __func__, afi); | |
2830 | return; | |
2831 | } | |
65efcfce | 2832 | |
d62a17ae | 2833 | if (!bgp_exterior) { |
2834 | vnc_zlog_debug_verbose( | |
2835 | "%s: no exterior view set yet, no routes to import yet", | |
2836 | __func__); | |
2837 | return; | |
2838 | } | |
65efcfce | 2839 | |
d62a17ae | 2840 | for (rn = bgp_table_top(bgp_exterior->rib[afi][SAFI_UNICAST]); rn; |
2841 | rn = bgp_route_next(rn)) { | |
65efcfce | 2842 | |
40381db7 | 2843 | struct bgp_path_info *bpi; |
65efcfce | 2844 | |
6f94b685 DS |
2845 | for (bpi = bgp_node_get_bgp_path_info(rn); bpi; |
2846 | bpi = bpi->next) { | |
65efcfce | 2847 | |
40381db7 | 2848 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 2849 | continue; |
65efcfce | 2850 | |
d62a17ae | 2851 | vnc_import_bgp_exterior_add_route_it( |
b54892e0 DS |
2852 | bgp_exterior, bgp_node_get_prefix(rn), bpi, |
2853 | it_only); | |
d62a17ae | 2854 | } |
2855 | } | |
65efcfce LB |
2856 | } |
2857 | ||
2858 | ||
d62a17ae | 2859 | void vnc_import_bgp_redist_disable(struct bgp *bgp, afi_t afi) |
65efcfce | 2860 | { |
d62a17ae | 2861 | /* |
2862 | * iterate over vpn routes, find routes of type ZEBRA_ROUTE_BGP_DIRECT, | |
2863 | * delete (call timer expire immediately) | |
2864 | */ | |
2865 | struct bgp_node *rn1; | |
2866 | struct bgp_node *rn2; | |
2867 | ||
2868 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
2869 | ||
2870 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
2871 | vnc_zlog_debug_verbose( | |
2872 | "%s: already disabled for afi %d, skipping", __func__, | |
2873 | afi); | |
2874 | return; | |
2875 | } | |
2876 | ||
2877 | /* | |
2878 | * Two-level table for SAFI_MPLS_VPN | |
2879 | * Be careful when changing the things we iterate over | |
2880 | */ | |
2881 | for (rn1 = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); rn1; | |
2882 | rn1 = bgp_route_next(rn1)) { | |
b54892e0 | 2883 | const struct prefix *rn1_p; |
d62a17ae | 2884 | |
52a44d64 DS |
2885 | if (!bgp_node_has_bgp_path_info_data(rn1)) |
2886 | continue; | |
d62a17ae | 2887 | |
b54892e0 | 2888 | rn1_p = bgp_node_get_prefix(rn1); |
52a44d64 DS |
2889 | for (rn2 = bgp_table_top(bgp_node_get_bgp_table_info(rn1)); rn2; |
2890 | rn2 = bgp_route_next(rn2)) { | |
b54892e0 | 2891 | const struct prefix *rn2_p = bgp_node_get_prefix(rn2); |
52a44d64 DS |
2892 | struct bgp_path_info *bpi; |
2893 | struct bgp_path_info *nextbpi; | |
d62a17ae | 2894 | |
52a44d64 DS |
2895 | for (bpi = bgp_node_get_bgp_path_info(rn2); bpi; |
2896 | bpi = nextbpi) { | |
d62a17ae | 2897 | |
52a44d64 | 2898 | nextbpi = bpi->next; |
b575a12c | 2899 | |
52a44d64 DS |
2900 | if (bpi->type != ZEBRA_ROUTE_BGP_DIRECT) |
2901 | continue; | |
d62a17ae | 2902 | |
52a44d64 DS |
2903 | struct rfapi_descriptor *rfd; |
2904 | vncHDBgpDirect.peer = bpi->peer; | |
d62a17ae | 2905 | |
52a44d64 | 2906 | assert(bpi->extra); |
d62a17ae | 2907 | |
52a44d64 | 2908 | rfd = bpi->extra->vnc.export.rfapi_handle; |
d62a17ae | 2909 | |
52a44d64 DS |
2910 | vnc_zlog_debug_verbose( |
2911 | "%s: deleting bpi=%p, bpi->peer=%p, bpi->type=%d, bpi->sub_type=%d, bpi->extra->vnc.export.rfapi_handle=%p [passing rfd=%p]", | |
2912 | __func__, bpi, bpi->peer, bpi->type, | |
2913 | bpi->sub_type, | |
2914 | (bpi->extra ? bpi->extra->vnc.export | |
2915 | .rfapi_handle | |
2916 | : NULL), | |
2917 | rfd); | |
2918 | ||
2919 | del_vnc_route(rfd, bpi->peer, bgp, | |
b54892e0 DS |
2920 | SAFI_MPLS_VPN, rn2_p, |
2921 | (struct prefix_rd *)rn1_p, | |
52a44d64 DS |
2922 | bpi->type, bpi->sub_type, NULL, |
2923 | 1); /* kill */ | |
2924 | ||
2925 | vncHDBgpDirect.peer = NULL; | |
d62a17ae | 2926 | } |
2927 | } | |
2928 | } | |
2929 | /* Clear RHN list */ | |
2930 | if (bgp->rfapi->resolve_nve_nexthop) { | |
2931 | struct prefix_bag *pb; | |
4b7e6066 | 2932 | struct bgp_path_info *info; |
d62a17ae | 2933 | while (!skiplist_first(bgp->rfapi->resolve_nve_nexthop, NULL, |
2934 | (void *)&pb)) { | |
40381db7 | 2935 | info = pb->ubpi; |
d62a17ae | 2936 | skiplist_delete_first(bgp->rfapi->resolve_nve_nexthop); |
18ee8310 | 2937 | bgp_path_info_unlock(info); |
d62a17ae | 2938 | } |
2939 | } | |
2940 | ||
2941 | bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT] = 0; | |
2942 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce LB |
2943 | } |
2944 | ||
2945 | ||
d62a17ae | 2946 | void vnc_import_bgp_exterior_redist_disable(struct bgp *bgp, afi_t afi) |
65efcfce | 2947 | { |
d62a17ae | 2948 | struct rfapi_cfg *hc = bgp->rfapi_cfg; |
2949 | struct bgp *bgp_exterior = hc->redist_bgp_exterior_view; | |
65efcfce | 2950 | |
d62a17ae | 2951 | vnc_zlog_debug_verbose("%s: entry", __func__); |
65efcfce | 2952 | |
d62a17ae | 2953 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { |
2954 | vnc_zlog_debug_verbose( | |
2955 | "%s: already disabled for afi %d, skipping", __func__, | |
2956 | afi); | |
2957 | return; | |
2958 | } | |
65efcfce | 2959 | |
d62a17ae | 2960 | if (!bgp_exterior) { |
2961 | vnc_zlog_debug_verbose( | |
2962 | "%s: bgp exterior view not defined, skipping", | |
2963 | __func__); | |
2964 | return; | |
2965 | } | |
65efcfce LB |
2966 | |
2967 | ||
d62a17ae | 2968 | { |
2969 | struct bgp_node *rn; | |
2970 | for (rn = bgp_table_top(bgp_exterior->rib[afi][SAFI_UNICAST]); | |
2971 | rn; rn = bgp_route_next(rn)) { | |
65efcfce | 2972 | |
40381db7 | 2973 | struct bgp_path_info *bpi; |
65efcfce | 2974 | |
6f94b685 DS |
2975 | for (bpi = bgp_node_get_bgp_path_info(rn); bpi; |
2976 | bpi = bpi->next) { | |
65efcfce | 2977 | |
40381db7 | 2978 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 2979 | continue; |
65efcfce | 2980 | |
b54892e0 DS |
2981 | vnc_import_bgp_exterior_del_route( |
2982 | bgp_exterior, bgp_node_get_prefix(rn), | |
2983 | bpi); | |
d62a17ae | 2984 | } |
2985 | } | |
65efcfce | 2986 | #if DEBUG_RHN_LIST |
d62a17ae | 2987 | print_rhn_list(__func__, NULL); |
65efcfce | 2988 | #endif |
d62a17ae | 2989 | } |
65efcfce | 2990 | |
d62a17ae | 2991 | bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT] = 0; |
2992 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce | 2993 | } |