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Commit | Line | Data |
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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_zebra.c | |
23 | * Purpose: Handle exchange of routes between VNC and 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/log.h" |
30 | #include "lib/command.h" | |
31 | #include "lib/zclient.h" | |
32 | #include "lib/stream.h" | |
74ffbfe6 | 33 | #include "lib/ringbuf.h" |
f8b6f499 | 34 | #include "lib/memory.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_route.h" | |
40 | #include "bgpd/bgp_debug.h" | |
41 | #include "bgpd/bgp_advertise.h" | |
65efcfce | 42 | |
f8b6f499 LB |
43 | #include "bgpd/rfapi/bgp_rfapi_cfg.h" |
44 | #include "bgpd/rfapi/rfapi.h" | |
45 | #include "bgpd/rfapi/rfapi_import.h" | |
46 | #include "bgpd/rfapi/rfapi_private.h" | |
47 | #include "bgpd/rfapi/vnc_zebra.h" | |
48 | #include "bgpd/rfapi/rfapi_vty.h" | |
49 | #include "bgpd/rfapi/rfapi_backend.h" | |
a3b55c25 | 50 | #include "bgpd/rfapi/vnc_debug.h" |
65efcfce | 51 | |
d62a17ae | 52 | static struct rfapi_descriptor vncHD1VR; /* Single-VR export dummy nve descr */ |
65efcfce LB |
53 | static struct zclient *zclient_vnc = NULL; |
54 | ||
55 | /*********************************************************************** | |
56 | * REDISTRIBUTE: Zebra sends updates/withdraws to BGPD | |
57 | ***********************************************************************/ | |
58 | ||
59 | /* | |
60 | * Routes coming from zebra get added to VNC here | |
61 | */ | |
d7c0a89a | 62 | static void vnc_redistribute_add(struct prefix *p, uint32_t metric, |
74489921 | 63 | uint8_t type) |
65efcfce | 64 | { |
d62a17ae | 65 | struct bgp *bgp = bgp_get_default(); |
66 | struct prefix_rd prd; | |
67 | struct rfapi_ip_addr vnaddr; | |
68 | afi_t afi; | |
69 | uint32_t local_pref = | |
70 | rfp_cost_to_localpref(metric > 255 ? 255 : metric); | |
71 | ||
72 | if (!bgp) | |
73 | return; | |
74 | ||
75 | if (!bgp->rfapi_cfg) { | |
76 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
77 | __func__); | |
78 | return; | |
79 | } | |
80 | ||
81 | afi = family2afi(p->family); | |
82 | if (!afi) { | |
83 | vnc_zlog_debug_verbose("%s: unknown prefix address family %d", | |
84 | __func__, p->family); | |
85 | return; | |
86 | } | |
87 | ||
88 | if (!bgp->rfapi_cfg->redist[afi][type]) { | |
89 | vnc_zlog_debug_verbose( | |
90 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d] is 0, skipping", | |
91 | __func__, afi, type); | |
92 | return; | |
93 | } | |
94 | if (!bgp->rfapi_cfg->rfg_redist) { | |
95 | vnc_zlog_debug_verbose("%s: no redist nve group, skipping", | |
96 | __func__); | |
97 | return; | |
98 | } | |
99 | ||
100 | /* | |
101 | * Assume nve group's configured VN address prefix is a host | |
102 | * route which also happens to give the NVE VN address to use | |
103 | * for redistributing into VNC. | |
104 | */ | |
105 | vnaddr.addr_family = bgp->rfapi_cfg->rfg_redist->vn_prefix.family; | |
106 | switch (bgp->rfapi_cfg->rfg_redist->vn_prefix.family) { | |
107 | case AF_INET: | |
108 | if (bgp->rfapi_cfg->rfg_redist->vn_prefix.prefixlen != 32) { | |
109 | vnc_zlog_debug_verbose( | |
110 | "%s: redist nve group VN prefix len (%d) != 32, skipping", | |
111 | __func__, | |
112 | bgp->rfapi_cfg->rfg_redist->vn_prefix | |
113 | .prefixlen); | |
114 | return; | |
115 | } | |
116 | vnaddr.addr.v4 = | |
117 | bgp->rfapi_cfg->rfg_redist->vn_prefix.u.prefix4; | |
118 | break; | |
119 | case AF_INET6: | |
120 | if (bgp->rfapi_cfg->rfg_redist->vn_prefix.prefixlen != 128) { | |
121 | vnc_zlog_debug_verbose( | |
122 | "%s: redist nve group VN prefix len (%d) != 128, skipping", | |
123 | __func__, | |
124 | bgp->rfapi_cfg->rfg_redist->vn_prefix | |
125 | .prefixlen); | |
126 | return; | |
127 | } | |
128 | vnaddr.addr.v6 = | |
129 | bgp->rfapi_cfg->rfg_redist->vn_prefix.u.prefix6; | |
130 | break; | |
131 | default: | |
132 | vnc_zlog_debug_verbose( | |
133 | "%s: no redist nve group VN host prefix configured, skipping", | |
134 | __func__); | |
135 | return; | |
136 | } | |
137 | ||
138 | /* | |
139 | * Assume nve group's configured UN address prefix is a host | |
140 | * route which also happens to give the NVE UN address to use | |
141 | * for redistributing into VNC. | |
142 | */ | |
143 | ||
144 | /* | |
145 | * Set UN address in dummy nve descriptor so add_vnc_route | |
146 | * can use it in VNC tunnel SubTLV | |
147 | */ | |
148 | { | |
149 | struct rfapi_ip_prefix pfx_un; | |
150 | ||
151 | rfapiQprefix2Rprefix(&bgp->rfapi_cfg->rfg_redist->un_prefix, | |
152 | &pfx_un); | |
153 | ||
154 | switch (pfx_un.prefix.addr_family) { | |
155 | case AF_INET: | |
156 | if (pfx_un.length != 32) { | |
157 | vnc_zlog_debug_verbose( | |
158 | "%s: redist nve group UN prefix len (%d) != 32, skipping", | |
159 | __func__, pfx_un.length); | |
160 | return; | |
161 | } | |
162 | break; | |
163 | case AF_INET6: | |
164 | if (pfx_un.length != 128) { | |
165 | vnc_zlog_debug_verbose( | |
166 | "%s: redist nve group UN prefix len (%d) != 128, skipping", | |
167 | __func__, pfx_un.length); | |
168 | return; | |
169 | } | |
170 | break; | |
171 | default: | |
172 | vnc_zlog_debug_verbose( | |
173 | "%s: no redist nve group UN host prefix configured, skipping", | |
174 | __func__); | |
175 | return; | |
176 | } | |
177 | ||
178 | vncHD1VR.un_addr = pfx_un.prefix; | |
179 | ||
180 | if (!vncHD1VR.peer) { | |
181 | /* | |
182 | * Same setup as in rfapi_open() | |
183 | */ | |
184 | vncHD1VR.peer = peer_new(bgp); | |
185 | vncHD1VR.peer->status = | |
186 | Established; /* keep bgp core happy */ | |
187 | bgp_sync_delete(vncHD1VR.peer); /* don't need these */ | |
424ab01d | 188 | |
becedef6 QY |
189 | /* |
190 | * since this peer is not on the I/O thread, this lock | |
191 | * is not strictly necessary, but serves as a reminder | |
192 | * to those who may meddle... | |
193 | */ | |
424ab01d QY |
194 | pthread_mutex_lock(&vncHD1VR.peer->io_mtx); |
195 | { | |
196 | // we don't need any I/O related facilities | |
197 | if (vncHD1VR.peer->ibuf) | |
198 | stream_fifo_free(vncHD1VR.peer->ibuf); | |
199 | if (vncHD1VR.peer->obuf) | |
200 | stream_fifo_free(vncHD1VR.peer->obuf); | |
201 | ||
202 | if (vncHD1VR.peer->ibuf_work) | |
74ffbfe6 | 203 | ringbuf_del(vncHD1VR.peer->ibuf_work); |
424ab01d QY |
204 | if (vncHD1VR.peer->obuf_work) |
205 | stream_free(vncHD1VR.peer->obuf_work); | |
206 | ||
d62a17ae | 207 | vncHD1VR.peer->ibuf = NULL; |
d62a17ae | 208 | vncHD1VR.peer->obuf = NULL; |
424ab01d QY |
209 | vncHD1VR.peer->obuf_work = NULL; |
210 | vncHD1VR.peer->ibuf_work = NULL; | |
d62a17ae | 211 | } |
424ab01d QY |
212 | pthread_mutex_unlock(&vncHD1VR.peer->io_mtx); |
213 | ||
d62a17ae | 214 | /* base code assumes have valid host pointer */ |
215 | vncHD1VR.peer->host = | |
216 | XSTRDUP(MTYPE_BGP_PEER_HOST, ".zebra."); | |
217 | ||
218 | /* Mark peer as belonging to HD */ | |
219 | SET_FLAG(vncHD1VR.peer->flags, PEER_FLAG_IS_RFAPI_HD); | |
220 | } | |
221 | } | |
222 | ||
223 | memset(&prd, 0, sizeof(prd)); | |
224 | prd = bgp->rfapi_cfg->rfg_redist->rd; | |
225 | prd.family = AF_UNSPEC; | |
226 | prd.prefixlen = 64; | |
227 | ||
228 | add_vnc_route(&vncHD1VR, /* cookie + UN addr */ | |
229 | bgp, SAFI_MPLS_VPN, p, &prd, &vnaddr, &local_pref, | |
230 | &(bgp->rfapi_cfg->redist_lifetime), | |
231 | NULL, /* RFP options */ | |
232 | NULL, /* struct rfapi_un_option */ | |
233 | NULL, /* struct rfapi_vn_option */ | |
234 | bgp->rfapi_cfg->rfg_redist->rt_export_list, NULL, | |
235 | NULL, /* label: default */ | |
236 | type, BGP_ROUTE_REDISTRIBUTE, 0); /* flags */ | |
65efcfce LB |
237 | } |
238 | ||
239 | /* | |
240 | * Route deletions from zebra propagate to VNC here | |
241 | */ | |
d62a17ae | 242 | static void vnc_redistribute_delete(struct prefix *p, uint8_t type) |
65efcfce | 243 | { |
d62a17ae | 244 | struct bgp *bgp = bgp_get_default(); |
245 | struct prefix_rd prd; | |
246 | afi_t afi; | |
247 | ||
248 | if (!bgp) | |
249 | return; | |
250 | ||
251 | if (!bgp->rfapi_cfg) { | |
252 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
253 | __func__); | |
254 | return; | |
255 | } | |
256 | afi = family2afi(p->family); | |
257 | if (!afi) { | |
258 | vnc_zlog_debug_verbose("%s: unknown prefix address family %d", | |
259 | __func__, p->family); | |
260 | return; | |
261 | } | |
262 | if (!bgp->rfapi_cfg->redist[afi][type]) { | |
263 | vnc_zlog_debug_verbose( | |
264 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d] is 0, skipping", | |
265 | __func__, afi, type); | |
266 | return; | |
267 | } | |
268 | if (!bgp->rfapi_cfg->rfg_redist) { | |
269 | vnc_zlog_debug_verbose("%s: no redist nve group, skipping", | |
270 | __func__); | |
271 | return; | |
272 | } | |
273 | ||
274 | memset(&prd, 0, sizeof(prd)); | |
275 | prd = bgp->rfapi_cfg->rfg_redist->rd; | |
276 | prd.family = AF_UNSPEC; | |
277 | prd.prefixlen = 64; | |
278 | ||
279 | del_vnc_route(&vncHD1VR, /* use dummy ptr as cookie */ | |
280 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, p, &prd, type, | |
281 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); | |
65efcfce LB |
282 | } |
283 | ||
284 | /* | |
285 | * Flush all redistributed routes of type <type> | |
286 | */ | |
d62a17ae | 287 | static void vnc_redistribute_withdraw(struct bgp *bgp, afi_t afi, uint8_t type) |
65efcfce | 288 | { |
d62a17ae | 289 | struct prefix_rd prd; |
290 | struct bgp_table *table; | |
291 | struct bgp_node *prn; | |
292 | struct bgp_node *rn; | |
293 | ||
294 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
295 | ||
296 | if (!bgp) | |
297 | return; | |
298 | if (!bgp->rfapi_cfg) { | |
299 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
300 | __func__); | |
301 | return; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Loop over all the RDs | |
306 | */ | |
307 | for (prn = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); prn; | |
308 | prn = bgp_route_next(prn)) { | |
309 | memset(&prd, 0, sizeof(prd)); | |
310 | prd.family = AF_UNSPEC; | |
311 | prd.prefixlen = 64; | |
312 | memcpy(prd.val, prn->p.u.val, 8); | |
313 | ||
314 | /* This is the per-RD table of prefixes */ | |
315 | table = prn->info; | |
2eab1324 RW |
316 | if (!table) |
317 | continue; | |
d62a17ae | 318 | |
319 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
320 | ||
4b7e6066 | 321 | struct bgp_path_info *ri; |
d62a17ae | 322 | |
323 | for (ri = rn->info; ri; ri = ri->next) { | |
324 | if (ri->type | |
325 | == type) { /* has matching redist type */ | |
326 | break; | |
327 | } | |
328 | } | |
329 | if (ri) { | |
330 | del_vnc_route( | |
331 | &vncHD1VR, /* use dummy ptr as cookie */ | |
332 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, | |
333 | &(rn->p), &prd, type, | |
334 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); | |
335 | } | |
336 | } | |
337 | } | |
338 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce LB |
339 | } |
340 | ||
341 | /* | |
342 | * Zebra route add and delete treatment. | |
343 | * | |
344 | * Assumes 1 nexthop | |
345 | */ | |
74489921 RW |
346 | static int vnc_zebra_read_route(int command, struct zclient *zclient, |
347 | zebra_size_t length, vrf_id_t vrf_id) | |
65efcfce | 348 | { |
74489921 RW |
349 | struct zapi_route api; |
350 | int add; | |
d62a17ae | 351 | |
74489921 RW |
352 | if (zapi_route_decode(zclient->ibuf, &api) < 0) |
353 | return -1; | |
65efcfce | 354 | |
74489921 RW |
355 | /* we completely ignore srcdest routes for now. */ |
356 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
d62a17ae | 357 | return 0; |
358 | ||
74489921 RW |
359 | add = (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD); |
360 | if (add) | |
361 | vnc_redistribute_add(&api.prefix, api.metric, api.type); | |
d62a17ae | 362 | else |
74489921 | 363 | vnc_redistribute_delete(&api.prefix, api.type); |
d62a17ae | 364 | |
74489921 RW |
365 | if (BGP_DEBUG(zebra, ZEBRA)) { |
366 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 367 | |
74489921 RW |
368 | prefix2str(&api.prefix, buf, sizeof(buf)); |
369 | vnc_zlog_debug_verbose( | |
370 | "%s: Zebra rcvd: route delete %s %s metric %u", | |
371 | __func__, zebra_route_string(api.type), buf, | |
372 | api.metric); | |
d62a17ae | 373 | } |
374 | ||
375 | return 0; | |
65efcfce LB |
376 | } |
377 | ||
378 | /*********************************************************************** | |
379 | * vnc_bgp_zebra_*: VNC sends updates/withdraws to Zebra | |
380 | ***********************************************************************/ | |
381 | ||
382 | /* | |
383 | * low-level message builder | |
384 | */ | |
a74e593b RW |
385 | static void vnc_zebra_route_msg(struct prefix *p, unsigned int nhp_count, |
386 | void *nhp_ary, int add) /* 1 = add, 0 = del */ | |
65efcfce | 387 | { |
2ad4f093 RW |
388 | struct zapi_route api; |
389 | struct zapi_nexthop *api_nh; | |
390 | int i; | |
b40c5062 LB |
391 | struct in_addr **nhp_ary4 = nhp_ary; |
392 | struct in6_addr **nhp_ary6 = nhp_ary; | |
2ad4f093 | 393 | |
d62a17ae | 394 | if (!nhp_count) { |
395 | vnc_zlog_debug_verbose("%s: empty nexthop list, skipping", | |
396 | __func__); | |
397 | return; | |
398 | } | |
399 | ||
2ad4f093 RW |
400 | memset(&api, 0, sizeof(api)); |
401 | api.vrf_id = VRF_DEFAULT; | |
402 | api.type = ZEBRA_ROUTE_VNC; | |
403 | api.safi = SAFI_UNICAST; | |
404 | api.prefix = *p; | |
405 | ||
406 | /* Nexthops */ | |
407 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
a74e593b RW |
408 | api.nexthop_num = MIN(nhp_count, multipath_num); |
409 | for (i = 0; i < api.nexthop_num; i++) { | |
2ad4f093 RW |
410 | |
411 | api_nh = &api.nexthops[i]; | |
4a7371e9 | 412 | api_nh->vrf_id = VRF_DEFAULT; |
2ad4f093 RW |
413 | switch (p->family) { |
414 | case AF_INET: | |
b40c5062 | 415 | memcpy(&api_nh->gate.ipv4, nhp_ary4[i], |
9913029c RW |
416 | sizeof(api_nh->gate.ipv4)); |
417 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
2ad4f093 RW |
418 | break; |
419 | case AF_INET6: | |
b40c5062 | 420 | memcpy(&api_nh->gate.ipv6, nhp_ary6[i], |
9913029c RW |
421 | sizeof(api_nh->gate.ipv6)); |
422 | api_nh->type = NEXTHOP_TYPE_IPV6; | |
2ad4f093 | 423 | break; |
9913029c | 424 | } |
2ad4f093 | 425 | } |
9913029c | 426 | |
2ad4f093 RW |
427 | if (BGP_DEBUG(zebra, ZEBRA)) { |
428 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 429 | |
2ad4f093 | 430 | prefix2str(&api.prefix, buf, sizeof(buf)); |
d62a17ae | 431 | vnc_zlog_debug_verbose( |
2ad4f093 RW |
432 | "%s: Zebra send: route %s %s, nhp_count=%d", __func__, |
433 | (add ? "add" : "del"), buf, nhp_count); | |
d62a17ae | 434 | } |
2ad4f093 RW |
435 | |
436 | zclient_route_send((add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE), | |
437 | zclient_vnc, &api); | |
65efcfce LB |
438 | } |
439 | ||
440 | ||
441 | static void | |
d7c0a89a | 442 | nve_list_to_nh_array(uint8_t family, struct list *nve_list, |
a74e593b | 443 | unsigned int *nh_count_ret, |
d62a17ae | 444 | void **nh_ary_ret, /* returned address array */ |
445 | void **nhp_ary_ret) /* returned pointer array */ | |
65efcfce | 446 | { |
d62a17ae | 447 | int nve_count = listcount(nve_list); |
65efcfce | 448 | |
d62a17ae | 449 | *nh_count_ret = 0; |
450 | *nh_ary_ret = NULL; | |
451 | *nhp_ary_ret = NULL; | |
65efcfce | 452 | |
d62a17ae | 453 | if (!nve_count) { |
454 | vnc_zlog_debug_verbose("%s: empty nve_list, skipping", | |
455 | __func__); | |
456 | return; | |
457 | } | |
65efcfce | 458 | |
d62a17ae | 459 | if (family == AF_INET) { |
460 | struct listnode *ln; | |
461 | struct in_addr *iap; | |
462 | struct in_addr **v; | |
65efcfce | 463 | |
d62a17ae | 464 | /* |
465 | * Array of nexthop addresses | |
466 | */ | |
467 | *nh_ary_ret = | |
468 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in_addr)); | |
65efcfce | 469 | |
d62a17ae | 470 | /* |
471 | * Array of pointers to nexthop addresses | |
472 | */ | |
473 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, | |
474 | nve_count * sizeof(struct in_addr *)); | |
475 | iap = *nh_ary_ret; | |
476 | v = *nhp_ary_ret; | |
65efcfce | 477 | |
d62a17ae | 478 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 479 | |
d62a17ae | 480 | struct rfapi_descriptor *irfd; |
481 | struct prefix nhp; | |
65efcfce | 482 | |
d62a17ae | 483 | irfd = listgetdata(ln); |
65efcfce | 484 | |
d62a17ae | 485 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
486 | continue; | |
65efcfce | 487 | |
d62a17ae | 488 | *iap = nhp.u.prefix4; |
489 | *v = iap; | |
490 | vnc_zlog_debug_verbose( | |
491 | "%s: ipadr: (%p)<-0x%x, ptr: (%p)<-%p", | |
492 | __func__, iap, nhp.u.prefix4.s_addr, v, iap); | |
65efcfce | 493 | |
d62a17ae | 494 | ++iap; |
495 | ++v; | |
496 | ++*nh_count_ret; | |
497 | } | |
65efcfce | 498 | |
d62a17ae | 499 | } else if (family == AF_INET6) { |
65efcfce | 500 | |
d62a17ae | 501 | struct listnode *ln; |
65efcfce | 502 | |
d62a17ae | 503 | *nh_ary_ret = |
504 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in6_addr)); | |
65efcfce | 505 | |
d62a17ae | 506 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, |
507 | nve_count * sizeof(struct in6_addr *)); | |
65efcfce | 508 | |
d62a17ae | 509 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 510 | |
d62a17ae | 511 | struct rfapi_descriptor *irfd; |
512 | struct in6_addr *iap = *nh_ary_ret; | |
513 | struct in6_addr **v = *nhp_ary_ret; | |
514 | struct prefix nhp; | |
65efcfce | 515 | |
d62a17ae | 516 | irfd = listgetdata(ln); |
65efcfce | 517 | |
d62a17ae | 518 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
519 | continue; | |
65efcfce | 520 | |
d62a17ae | 521 | *iap = nhp.u.prefix6; |
522 | *v = iap; | |
65efcfce | 523 | |
d62a17ae | 524 | ++iap; |
525 | ++v; | |
526 | ++*nh_count_ret; | |
527 | } | |
528 | } | |
65efcfce LB |
529 | } |
530 | ||
d62a17ae | 531 | static void import_table_to_nve_list_zebra(struct bgp *bgp, |
532 | struct rfapi_import_table *it, | |
533 | struct list **nves, uint8_t family) | |
65efcfce | 534 | { |
d62a17ae | 535 | struct listnode *node; |
536 | struct rfapi_rfg_name *rfgn; | |
537 | ||
538 | /* | |
539 | * Loop over the list of NVE-Groups configured for | |
540 | * exporting to direct-bgp. | |
541 | * | |
542 | * Build a list of NVEs that use this import table | |
543 | */ | |
544 | *nves = NULL; | |
545 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
546 | rfgn)) { | |
547 | ||
548 | /* | |
549 | * If this NVE-Group's import table matches the current one | |
550 | */ | |
551 | if (rfgn->rfg && rfgn->rfg->nves | |
552 | && rfgn->rfg->rfapi_import_table == it) { | |
553 | ||
554 | nve_group_to_nve_list(rfgn->rfg, nves, family); | |
555 | } | |
556 | } | |
65efcfce LB |
557 | } |
558 | ||
d62a17ae | 559 | static void vnc_zebra_add_del_prefix(struct bgp *bgp, |
560 | struct rfapi_import_table *import_table, | |
fe08ba7e | 561 | struct agg_node *rn, |
d62a17ae | 562 | int add) /* !0 = add, 0 = del */ |
65efcfce | 563 | { |
d62a17ae | 564 | struct list *nves; |
565 | ||
a74e593b | 566 | unsigned int nexthop_count = 0; |
d62a17ae | 567 | void *nh_ary = NULL; |
568 | void *nhp_ary = NULL; | |
569 | ||
570 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
571 | ||
572 | if (zclient_vnc->sock < 0) | |
573 | return; | |
574 | ||
575 | if (rn->p.family != AF_INET && rn->p.family != AF_INET6) { | |
450971aa | 576 | flog_err(EC_LIB_DEVELOPMENT, |
1c50c1c0 | 577 | "%s: invalid route node addr family", __func__); |
d62a17ae | 578 | return; |
579 | } | |
580 | ||
581 | if (!zclient_vnc->redist[family2afi(rn->p.family)][ZEBRA_ROUTE_VNC]) | |
582 | return; | |
583 | ||
584 | if (!bgp->rfapi_cfg) { | |
585 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
586 | __func__); | |
587 | return; | |
588 | } | |
589 | if (!listcount(bgp->rfapi_cfg->rfg_export_zebra_l)) { | |
590 | vnc_zlog_debug_verbose( | |
591 | "%s: no zebra export nve group, skipping", __func__); | |
592 | return; | |
593 | } | |
594 | ||
595 | import_table_to_nve_list_zebra(bgp, import_table, &nves, rn->p.family); | |
596 | ||
597 | if (nves) { | |
598 | nve_list_to_nh_array(rn->p.family, nves, &nexthop_count, | |
599 | &nh_ary, &nhp_ary); | |
600 | ||
6a154c88 | 601 | list_delete(&nves); |
d62a17ae | 602 | |
603 | if (nexthop_count) | |
604 | vnc_zebra_route_msg(&rn->p, nexthop_count, nhp_ary, | |
605 | add); | |
606 | } | |
607 | ||
608 | if (nhp_ary) | |
609 | XFREE(MTYPE_TMP, nhp_ary); | |
610 | if (nh_ary) | |
611 | XFREE(MTYPE_TMP, nh_ary); | |
65efcfce LB |
612 | } |
613 | ||
d62a17ae | 614 | void vnc_zebra_add_prefix(struct bgp *bgp, |
615 | struct rfapi_import_table *import_table, | |
fe08ba7e | 616 | struct agg_node *rn) |
65efcfce | 617 | { |
d62a17ae | 618 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 1); |
65efcfce LB |
619 | } |
620 | ||
d62a17ae | 621 | void vnc_zebra_del_prefix(struct bgp *bgp, |
622 | struct rfapi_import_table *import_table, | |
fe08ba7e | 623 | struct agg_node *rn) |
65efcfce | 624 | { |
d62a17ae | 625 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 0); |
65efcfce LB |
626 | } |
627 | ||
628 | ||
d62a17ae | 629 | static void vnc_zebra_add_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd, |
630 | int add) /* 0 = del, !0 = add */ | |
65efcfce | 631 | { |
d62a17ae | 632 | struct listnode *node; |
633 | struct rfapi_rfg_name *rfgn; | |
634 | struct rfapi_nve_group_cfg *rfg = rfd->rfg; | |
635 | afi_t afi = family2afi(rfd->vn_addr.addr_family); | |
636 | struct prefix nhp; | |
637 | // struct prefix *nhpp; | |
638 | void *pAddr; | |
639 | ||
640 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
641 | ||
642 | if (zclient_vnc->sock < 0) | |
643 | return; | |
644 | ||
645 | if (!zclient_vnc->redist[afi][ZEBRA_ROUTE_VNC]) | |
646 | return; | |
647 | ||
648 | if (afi != AFI_IP && afi != AFI_IP6) { | |
450971aa | 649 | flog_err(EC_LIB_DEVELOPMENT, "%s: invalid vn addr family", |
1c50c1c0 | 650 | __func__); |
d62a17ae | 651 | return; |
652 | } | |
653 | ||
654 | if (!bgp) | |
655 | return; | |
656 | if (!bgp->rfapi_cfg) { | |
657 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
658 | __func__); | |
659 | return; | |
660 | } | |
661 | ||
662 | if (rfapiRaddr2Qprefix(&rfd->vn_addr, &nhp)) { | |
663 | vnc_zlog_debug_verbose("%s: can't convert vn address, skipping", | |
664 | __func__); | |
665 | return; | |
666 | } | |
667 | ||
668 | pAddr = &nhp.u.prefix4; | |
669 | ||
670 | /* | |
671 | * Loop over the list of NVE-Groups configured for | |
672 | * exporting to zebra and see if this new NVE's | |
673 | * group is among them. | |
674 | */ | |
675 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
676 | rfgn)) { | |
677 | ||
678 | /* | |
679 | * Yes, this NVE's group is configured for export to zebra | |
680 | */ | |
681 | if (rfgn->rfg == rfg) { | |
682 | ||
fe08ba7e DS |
683 | struct agg_table *rt = NULL; |
684 | struct agg_node *rn; | |
d62a17ae | 685 | struct rfapi_import_table *import_table; |
686 | import_table = rfg->rfapi_import_table; | |
687 | ||
688 | vnc_zlog_debug_verbose( | |
689 | "%s: this nve's group is in zebra export list", | |
690 | __func__); | |
691 | ||
692 | rt = import_table->imported_vpn[afi]; | |
693 | ||
694 | /* | |
695 | * Walk the NVE-Group's VNC Import table | |
696 | */ | |
fe08ba7e DS |
697 | for (rn = agg_route_top(rt); rn; |
698 | rn = agg_route_next(rn)) { | |
d62a17ae | 699 | |
700 | if (rn->info) { | |
701 | ||
702 | vnc_zlog_debug_verbose( | |
703 | "%s: sending %s", __func__, | |
704 | (add ? "add" : "del")); | |
705 | vnc_zebra_route_msg(&rn->p, 1, &pAddr, | |
706 | add); | |
707 | } | |
708 | } | |
709 | } | |
710 | } | |
65efcfce LB |
711 | } |
712 | ||
d62a17ae | 713 | void vnc_zebra_add_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 714 | { |
d62a17ae | 715 | vnc_zebra_add_del_nve(bgp, rfd, 1); |
65efcfce LB |
716 | } |
717 | ||
d62a17ae | 718 | void vnc_zebra_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 719 | { |
d62a17ae | 720 | vnc_zebra_add_del_nve(bgp, rfd, 0); |
65efcfce LB |
721 | } |
722 | ||
d62a17ae | 723 | static void vnc_zebra_add_del_group_afi(struct bgp *bgp, |
724 | struct rfapi_nve_group_cfg *rfg, | |
725 | afi_t afi, int add) | |
65efcfce | 726 | { |
fe08ba7e DS |
727 | struct agg_table *rt = NULL; |
728 | struct agg_node *rn; | |
d62a17ae | 729 | struct rfapi_import_table *import_table; |
730 | uint8_t family = afi2family(afi); | |
731 | ||
732 | struct list *nves = NULL; | |
a74e593b | 733 | unsigned int nexthop_count = 0; |
d62a17ae | 734 | void *nh_ary = NULL; |
735 | void *nhp_ary = NULL; | |
736 | ||
737 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
738 | import_table = rfg->rfapi_import_table; | |
739 | if (!import_table) { | |
740 | vnc_zlog_debug_verbose( | |
741 | "%s: import table not defined, returning", __func__); | |
742 | return; | |
743 | } | |
744 | ||
745 | if (afi == AFI_IP || afi == AFI_IP6) { | |
746 | rt = import_table->imported_vpn[afi]; | |
747 | } else { | |
450971aa | 748 | flog_err(EC_LIB_DEVELOPMENT, "%s: bad afi %d", __func__, afi); |
d62a17ae | 749 | return; |
750 | } | |
751 | ||
752 | if (!family) { | |
450971aa | 753 | flog_err(EC_LIB_DEVELOPMENT, "%s: computed bad family: %d", |
1c50c1c0 | 754 | __func__, family); |
d62a17ae | 755 | return; |
756 | } | |
757 | ||
758 | if (!rfg->nves) { | |
759 | /* avoid segfault below if list doesn't exist */ | |
760 | vnc_zlog_debug_verbose("%s: no NVEs in this group", __func__); | |
761 | return; | |
762 | } | |
763 | ||
764 | nve_group_to_nve_list(rfg, &nves, family); | |
765 | if (nves) { | |
766 | vnc_zlog_debug_verbose("%s: have nves", __func__); | |
767 | nve_list_to_nh_array(family, nves, &nexthop_count, &nh_ary, | |
768 | &nhp_ary); | |
769 | ||
770 | vnc_zlog_debug_verbose("%s: family: %d, nve count: %d", | |
771 | __func__, family, nexthop_count); | |
772 | ||
6a154c88 | 773 | list_delete(&nves); |
d62a17ae | 774 | |
775 | if (nexthop_count) { | |
776 | /* | |
777 | * Walk the NVE-Group's VNC Import table | |
778 | */ | |
fe08ba7e DS |
779 | for (rn = agg_route_top(rt); rn; |
780 | rn = agg_route_next(rn)) { | |
d62a17ae | 781 | if (rn->info) { |
782 | vnc_zebra_route_msg(&rn->p, | |
783 | nexthop_count, | |
784 | nhp_ary, add); | |
785 | } | |
786 | } | |
787 | } | |
788 | if (nhp_ary) | |
789 | XFREE(MTYPE_TMP, nhp_ary); | |
790 | if (nh_ary) | |
791 | XFREE(MTYPE_TMP, nh_ary); | |
792 | } | |
65efcfce LB |
793 | } |
794 | ||
d62a17ae | 795 | void vnc_zebra_add_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 796 | { |
d62a17ae | 797 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 1); |
798 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 1); | |
65efcfce LB |
799 | } |
800 | ||
d62a17ae | 801 | void vnc_zebra_del_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 802 | { |
d62a17ae | 803 | vnc_zlog_debug_verbose("%s: entry", __func__); |
804 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 0); | |
805 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 0); | |
65efcfce LB |
806 | } |
807 | ||
d62a17ae | 808 | void vnc_zebra_reexport_group_afi(struct bgp *bgp, |
809 | struct rfapi_nve_group_cfg *rfg, afi_t afi) | |
65efcfce | 810 | { |
d62a17ae | 811 | struct listnode *node; |
812 | struct rfapi_rfg_name *rfgn; | |
813 | ||
814 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
815 | rfgn)) { | |
816 | ||
817 | if (rfgn->rfg == rfg) { | |
818 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 0); | |
819 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 1); | |
820 | break; | |
821 | } | |
822 | } | |
65efcfce LB |
823 | } |
824 | ||
825 | ||
826 | /*********************************************************************** | |
827 | * CONTROL INTERFACE | |
828 | ***********************************************************************/ | |
829 | ||
830 | ||
831 | /* Other routes redistribution into BGP. */ | |
d62a17ae | 832 | int vnc_redistribute_set(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 833 | { |
d62a17ae | 834 | if (!bgp->rfapi_cfg) { |
835 | return CMD_WARNING_CONFIG_FAILED; | |
836 | } | |
65efcfce | 837 | |
d62a17ae | 838 | /* Set flag to BGP instance. */ |
839 | bgp->rfapi_cfg->redist[afi][type] = 1; | |
65efcfce | 840 | |
d62a17ae | 841 | // bgp->redist[afi][type] = 1; |
65efcfce | 842 | |
d62a17ae | 843 | /* Return if already redistribute flag is set. */ |
844 | if (zclient_vnc->redist[afi][type]) | |
845 | return CMD_WARNING_CONFIG_FAILED; | |
65efcfce | 846 | |
d62a17ae | 847 | vrf_bitmap_set(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
65efcfce | 848 | |
d62a17ae | 849 | // zclient_vnc->redist[afi][type] = 1; |
65efcfce | 850 | |
d62a17ae | 851 | /* Return if zebra connection is not established. */ |
852 | if (zclient_vnc->sock < 0) | |
853 | return CMD_WARNING_CONFIG_FAILED; | |
65efcfce | 854 | |
d62a17ae | 855 | if (BGP_DEBUG(zebra, ZEBRA)) |
856 | vnc_zlog_debug_verbose("Zebra send: redistribute add %s", | |
857 | zebra_route_string(type)); | |
65efcfce | 858 | |
d62a17ae | 859 | /* Send distribute add message to zebra. */ |
860 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient_vnc, afi, type, | |
861 | 0, VRF_DEFAULT); | |
65efcfce | 862 | |
d62a17ae | 863 | return CMD_SUCCESS; |
65efcfce LB |
864 | } |
865 | ||
866 | /* Unset redistribution. */ | |
d62a17ae | 867 | int vnc_redistribute_unset(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 868 | { |
d62a17ae | 869 | vnc_zlog_debug_verbose("%s: type=%d entry", __func__, type); |
870 | ||
871 | if (!bgp->rfapi_cfg) { | |
872 | vnc_zlog_debug_verbose("%s: return (no rfapi_cfg)", __func__); | |
873 | return CMD_WARNING_CONFIG_FAILED; | |
874 | } | |
875 | ||
876 | /* Unset flag from BGP instance. */ | |
877 | bgp->rfapi_cfg->redist[afi][type] = 0; | |
878 | ||
879 | /* Return if zebra connection is disabled. */ | |
880 | if (!zclient_vnc->redist[afi][type]) | |
881 | return CMD_WARNING_CONFIG_FAILED; | |
882 | zclient_vnc->redist[afi][type] = 0; | |
883 | ||
884 | if (bgp->rfapi_cfg->redist[AFI_IP][type] == 0 | |
885 | && bgp->rfapi_cfg->redist[AFI_IP6][type] == 0 | |
886 | && zclient_vnc->sock >= 0) { | |
887 | /* Send distribute delete message to zebra. */ | |
888 | if (BGP_DEBUG(zebra, ZEBRA)) | |
889 | vnc_zlog_debug_verbose( | |
890 | "Zebra send: redistribute delete %s", | |
891 | zebra_route_string(type)); | |
892 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient_vnc, | |
893 | afi, type, 0, VRF_DEFAULT); | |
894 | } | |
895 | ||
896 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
897 | vnc_redistribute_withdraw(bgp, afi, type); | |
898 | ||
899 | vnc_zlog_debug_verbose("%s: return", __func__); | |
900 | ||
901 | return CMD_SUCCESS; | |
65efcfce LB |
902 | } |
903 | ||
342213ea | 904 | extern struct zebra_privs_t bgpd_privs; |
65efcfce LB |
905 | |
906 | /* | |
907 | * Modeled after bgp_zebra.c'bgp_zebra_init() | |
908 | * Charriere asks, "Is it possible to carry two?" | |
909 | */ | |
d62a17ae | 910 | void vnc_zebra_init(struct thread_master *master) |
65efcfce | 911 | { |
d62a17ae | 912 | /* Set default values. */ |
e1a1880d | 913 | zclient_vnc = zclient_new_notify(master, &zclient_options_default); |
342213ea | 914 | zclient_init(zclient_vnc, ZEBRA_ROUTE_VNC, 0, &bgpd_privs); |
d62a17ae | 915 | |
74489921 RW |
916 | zclient_vnc->redistribute_route_add = vnc_zebra_read_route; |
917 | zclient_vnc->redistribute_route_del = vnc_zebra_read_route; | |
65efcfce LB |
918 | } |
919 | ||
d62a17ae | 920 | void vnc_zebra_destroy(void) |
65efcfce | 921 | { |
d62a17ae | 922 | if (zclient_vnc == NULL) |
923 | return; | |
924 | zclient_stop(zclient_vnc); | |
925 | zclient_free(zclient_vnc); | |
926 | zclient_vnc = NULL; | |
65efcfce | 927 | } |