]>
Commit | Line | Data |
---|---|---|
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 | */ | |
00dffa8c | 194 | frr_with_mutex(&vncHD1VR.peer->io_mtx) { |
424ab01d QY |
195 | // we don't need any I/O related facilities |
196 | if (vncHD1VR.peer->ibuf) | |
197 | stream_fifo_free(vncHD1VR.peer->ibuf); | |
198 | if (vncHD1VR.peer->obuf) | |
199 | stream_fifo_free(vncHD1VR.peer->obuf); | |
200 | ||
201 | if (vncHD1VR.peer->ibuf_work) | |
74ffbfe6 | 202 | ringbuf_del(vncHD1VR.peer->ibuf_work); |
424ab01d QY |
203 | if (vncHD1VR.peer->obuf_work) |
204 | stream_free(vncHD1VR.peer->obuf_work); | |
205 | ||
d62a17ae | 206 | vncHD1VR.peer->ibuf = NULL; |
d62a17ae | 207 | vncHD1VR.peer->obuf = NULL; |
424ab01d QY |
208 | vncHD1VR.peer->obuf_work = NULL; |
209 | vncHD1VR.peer->ibuf_work = NULL; | |
d62a17ae | 210 | } |
424ab01d | 211 | |
d62a17ae | 212 | /* base code assumes have valid host pointer */ |
213 | vncHD1VR.peer->host = | |
214 | XSTRDUP(MTYPE_BGP_PEER_HOST, ".zebra."); | |
215 | ||
216 | /* Mark peer as belonging to HD */ | |
217 | SET_FLAG(vncHD1VR.peer->flags, PEER_FLAG_IS_RFAPI_HD); | |
218 | } | |
219 | } | |
220 | ||
221 | memset(&prd, 0, sizeof(prd)); | |
222 | prd = bgp->rfapi_cfg->rfg_redist->rd; | |
223 | prd.family = AF_UNSPEC; | |
224 | prd.prefixlen = 64; | |
225 | ||
226 | add_vnc_route(&vncHD1VR, /* cookie + UN addr */ | |
227 | bgp, SAFI_MPLS_VPN, p, &prd, &vnaddr, &local_pref, | |
228 | &(bgp->rfapi_cfg->redist_lifetime), | |
229 | NULL, /* RFP options */ | |
230 | NULL, /* struct rfapi_un_option */ | |
231 | NULL, /* struct rfapi_vn_option */ | |
232 | bgp->rfapi_cfg->rfg_redist->rt_export_list, NULL, | |
233 | NULL, /* label: default */ | |
234 | type, BGP_ROUTE_REDISTRIBUTE, 0); /* flags */ | |
65efcfce LB |
235 | } |
236 | ||
237 | /* | |
238 | * Route deletions from zebra propagate to VNC here | |
239 | */ | |
d62a17ae | 240 | static void vnc_redistribute_delete(struct prefix *p, uint8_t type) |
65efcfce | 241 | { |
d62a17ae | 242 | struct bgp *bgp = bgp_get_default(); |
243 | struct prefix_rd prd; | |
244 | afi_t afi; | |
245 | ||
246 | if (!bgp) | |
247 | return; | |
248 | ||
249 | if (!bgp->rfapi_cfg) { | |
250 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
251 | __func__); | |
252 | return; | |
253 | } | |
254 | afi = family2afi(p->family); | |
255 | if (!afi) { | |
256 | vnc_zlog_debug_verbose("%s: unknown prefix address family %d", | |
257 | __func__, p->family); | |
258 | return; | |
259 | } | |
260 | if (!bgp->rfapi_cfg->redist[afi][type]) { | |
261 | vnc_zlog_debug_verbose( | |
262 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d] is 0, skipping", | |
263 | __func__, afi, type); | |
264 | return; | |
265 | } | |
266 | if (!bgp->rfapi_cfg->rfg_redist) { | |
267 | vnc_zlog_debug_verbose("%s: no redist nve group, skipping", | |
268 | __func__); | |
269 | return; | |
270 | } | |
271 | ||
272 | memset(&prd, 0, sizeof(prd)); | |
273 | prd = bgp->rfapi_cfg->rfg_redist->rd; | |
274 | prd.family = AF_UNSPEC; | |
275 | prd.prefixlen = 64; | |
276 | ||
277 | del_vnc_route(&vncHD1VR, /* use dummy ptr as cookie */ | |
278 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, p, &prd, type, | |
279 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); | |
65efcfce LB |
280 | } |
281 | ||
282 | /* | |
283 | * Flush all redistributed routes of type <type> | |
284 | */ | |
d62a17ae | 285 | static void vnc_redistribute_withdraw(struct bgp *bgp, afi_t afi, uint8_t type) |
65efcfce | 286 | { |
d62a17ae | 287 | struct prefix_rd prd; |
288 | struct bgp_table *table; | |
289 | struct bgp_node *prn; | |
290 | struct bgp_node *rn; | |
291 | ||
292 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
293 | ||
294 | if (!bgp) | |
295 | return; | |
296 | if (!bgp->rfapi_cfg) { | |
297 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
298 | __func__); | |
299 | return; | |
300 | } | |
301 | ||
302 | /* | |
303 | * Loop over all the RDs | |
304 | */ | |
305 | for (prn = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); prn; | |
306 | prn = bgp_route_next(prn)) { | |
307 | memset(&prd, 0, sizeof(prd)); | |
308 | prd.family = AF_UNSPEC; | |
309 | prd.prefixlen = 64; | |
310 | memcpy(prd.val, prn->p.u.val, 8); | |
311 | ||
312 | /* This is the per-RD table of prefixes */ | |
67009e22 | 313 | table = bgp_node_get_bgp_table_info(prn); |
2eab1324 RW |
314 | if (!table) |
315 | continue; | |
d62a17ae | 316 | |
317 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
318 | ||
4b7e6066 | 319 | struct bgp_path_info *ri; |
d62a17ae | 320 | |
6f94b685 DS |
321 | for (ri = bgp_node_get_bgp_path_info(rn); ri; |
322 | ri = ri->next) { | |
d62a17ae | 323 | if (ri->type |
324 | == type) { /* has matching redist type */ | |
325 | break; | |
326 | } | |
327 | } | |
328 | if (ri) { | |
329 | del_vnc_route( | |
330 | &vncHD1VR, /* use dummy ptr as cookie */ | |
331 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, | |
332 | &(rn->p), &prd, type, | |
333 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); | |
334 | } | |
335 | } | |
336 | } | |
337 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce LB |
338 | } |
339 | ||
340 | /* | |
341 | * Zebra route add and delete treatment. | |
342 | * | |
343 | * Assumes 1 nexthop | |
344 | */ | |
121f9dee | 345 | static int vnc_zebra_read_route(ZAPI_CALLBACK_ARGS) |
65efcfce | 346 | { |
74489921 RW |
347 | struct zapi_route api; |
348 | int add; | |
d62a17ae | 349 | |
74489921 RW |
350 | if (zapi_route_decode(zclient->ibuf, &api) < 0) |
351 | return -1; | |
65efcfce | 352 | |
74489921 RW |
353 | /* we completely ignore srcdest routes for now. */ |
354 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
d62a17ae | 355 | return 0; |
356 | ||
121f9dee | 357 | add = (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD); |
74489921 RW |
358 | if (add) |
359 | vnc_redistribute_add(&api.prefix, api.metric, api.type); | |
d62a17ae | 360 | else |
74489921 | 361 | vnc_redistribute_delete(&api.prefix, api.type); |
d62a17ae | 362 | |
74489921 RW |
363 | if (BGP_DEBUG(zebra, ZEBRA)) { |
364 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 365 | |
74489921 RW |
366 | prefix2str(&api.prefix, buf, sizeof(buf)); |
367 | vnc_zlog_debug_verbose( | |
368 | "%s: Zebra rcvd: route delete %s %s metric %u", | |
369 | __func__, zebra_route_string(api.type), buf, | |
370 | api.metric); | |
d62a17ae | 371 | } |
372 | ||
373 | return 0; | |
65efcfce LB |
374 | } |
375 | ||
376 | /*********************************************************************** | |
377 | * vnc_bgp_zebra_*: VNC sends updates/withdraws to Zebra | |
378 | ***********************************************************************/ | |
379 | ||
380 | /* | |
381 | * low-level message builder | |
382 | */ | |
a74e593b RW |
383 | static void vnc_zebra_route_msg(struct prefix *p, unsigned int nhp_count, |
384 | void *nhp_ary, int add) /* 1 = add, 0 = del */ | |
65efcfce | 385 | { |
2ad4f093 RW |
386 | struct zapi_route api; |
387 | struct zapi_nexthop *api_nh; | |
388 | int i; | |
b40c5062 LB |
389 | struct in_addr **nhp_ary4 = nhp_ary; |
390 | struct in6_addr **nhp_ary6 = nhp_ary; | |
2ad4f093 | 391 | |
d62a17ae | 392 | if (!nhp_count) { |
393 | vnc_zlog_debug_verbose("%s: empty nexthop list, skipping", | |
394 | __func__); | |
395 | return; | |
396 | } | |
397 | ||
2ad4f093 RW |
398 | memset(&api, 0, sizeof(api)); |
399 | api.vrf_id = VRF_DEFAULT; | |
400 | api.type = ZEBRA_ROUTE_VNC; | |
401 | api.safi = SAFI_UNICAST; | |
402 | api.prefix = *p; | |
403 | ||
404 | /* Nexthops */ | |
405 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
a74e593b RW |
406 | api.nexthop_num = MIN(nhp_count, multipath_num); |
407 | for (i = 0; i < api.nexthop_num; i++) { | |
2ad4f093 RW |
408 | |
409 | api_nh = &api.nexthops[i]; | |
4a7371e9 | 410 | api_nh->vrf_id = VRF_DEFAULT; |
2ad4f093 RW |
411 | switch (p->family) { |
412 | case AF_INET: | |
b40c5062 | 413 | memcpy(&api_nh->gate.ipv4, nhp_ary4[i], |
9913029c RW |
414 | sizeof(api_nh->gate.ipv4)); |
415 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
2ad4f093 RW |
416 | break; |
417 | case AF_INET6: | |
b40c5062 | 418 | memcpy(&api_nh->gate.ipv6, nhp_ary6[i], |
9913029c RW |
419 | sizeof(api_nh->gate.ipv6)); |
420 | api_nh->type = NEXTHOP_TYPE_IPV6; | |
2ad4f093 | 421 | break; |
9913029c | 422 | } |
2ad4f093 | 423 | } |
9913029c | 424 | |
2ad4f093 RW |
425 | if (BGP_DEBUG(zebra, ZEBRA)) { |
426 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 427 | |
2ad4f093 | 428 | prefix2str(&api.prefix, buf, sizeof(buf)); |
d62a17ae | 429 | vnc_zlog_debug_verbose( |
2ad4f093 RW |
430 | "%s: Zebra send: route %s %s, nhp_count=%d", __func__, |
431 | (add ? "add" : "del"), buf, nhp_count); | |
d62a17ae | 432 | } |
2ad4f093 RW |
433 | |
434 | zclient_route_send((add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE), | |
435 | zclient_vnc, &api); | |
65efcfce LB |
436 | } |
437 | ||
438 | ||
439 | static void | |
d7c0a89a | 440 | nve_list_to_nh_array(uint8_t family, struct list *nve_list, |
a74e593b | 441 | unsigned int *nh_count_ret, |
d62a17ae | 442 | void **nh_ary_ret, /* returned address array */ |
443 | void **nhp_ary_ret) /* returned pointer array */ | |
65efcfce | 444 | { |
d62a17ae | 445 | int nve_count = listcount(nve_list); |
65efcfce | 446 | |
d62a17ae | 447 | *nh_count_ret = 0; |
448 | *nh_ary_ret = NULL; | |
449 | *nhp_ary_ret = NULL; | |
65efcfce | 450 | |
d62a17ae | 451 | if (!nve_count) { |
452 | vnc_zlog_debug_verbose("%s: empty nve_list, skipping", | |
453 | __func__); | |
454 | return; | |
455 | } | |
65efcfce | 456 | |
d62a17ae | 457 | if (family == AF_INET) { |
458 | struct listnode *ln; | |
459 | struct in_addr *iap; | |
460 | struct in_addr **v; | |
65efcfce | 461 | |
d62a17ae | 462 | /* |
463 | * Array of nexthop addresses | |
464 | */ | |
465 | *nh_ary_ret = | |
466 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in_addr)); | |
65efcfce | 467 | |
d62a17ae | 468 | /* |
469 | * Array of pointers to nexthop addresses | |
470 | */ | |
471 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, | |
472 | nve_count * sizeof(struct in_addr *)); | |
473 | iap = *nh_ary_ret; | |
474 | v = *nhp_ary_ret; | |
65efcfce | 475 | |
d62a17ae | 476 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 477 | |
d62a17ae | 478 | struct rfapi_descriptor *irfd; |
479 | struct prefix nhp; | |
65efcfce | 480 | |
d62a17ae | 481 | irfd = listgetdata(ln); |
65efcfce | 482 | |
d62a17ae | 483 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
484 | continue; | |
65efcfce | 485 | |
d62a17ae | 486 | *iap = nhp.u.prefix4; |
487 | *v = iap; | |
488 | vnc_zlog_debug_verbose( | |
489 | "%s: ipadr: (%p)<-0x%x, ptr: (%p)<-%p", | |
490 | __func__, iap, nhp.u.prefix4.s_addr, v, iap); | |
65efcfce | 491 | |
d62a17ae | 492 | ++iap; |
493 | ++v; | |
494 | ++*nh_count_ret; | |
495 | } | |
65efcfce | 496 | |
d62a17ae | 497 | } else if (family == AF_INET6) { |
65efcfce | 498 | |
d62a17ae | 499 | struct listnode *ln; |
65efcfce | 500 | |
d62a17ae | 501 | *nh_ary_ret = |
502 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in6_addr)); | |
65efcfce | 503 | |
d62a17ae | 504 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, |
505 | nve_count * sizeof(struct in6_addr *)); | |
65efcfce | 506 | |
d62a17ae | 507 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 508 | |
d62a17ae | 509 | struct rfapi_descriptor *irfd; |
510 | struct in6_addr *iap = *nh_ary_ret; | |
511 | struct in6_addr **v = *nhp_ary_ret; | |
512 | struct prefix nhp; | |
65efcfce | 513 | |
d62a17ae | 514 | irfd = listgetdata(ln); |
65efcfce | 515 | |
d62a17ae | 516 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
517 | continue; | |
65efcfce | 518 | |
d62a17ae | 519 | *iap = nhp.u.prefix6; |
520 | *v = iap; | |
65efcfce | 521 | |
d62a17ae | 522 | ++iap; |
523 | ++v; | |
524 | ++*nh_count_ret; | |
525 | } | |
526 | } | |
65efcfce LB |
527 | } |
528 | ||
d62a17ae | 529 | static void import_table_to_nve_list_zebra(struct bgp *bgp, |
530 | struct rfapi_import_table *it, | |
531 | struct list **nves, uint8_t family) | |
65efcfce | 532 | { |
d62a17ae | 533 | struct listnode *node; |
534 | struct rfapi_rfg_name *rfgn; | |
535 | ||
536 | /* | |
537 | * Loop over the list of NVE-Groups configured for | |
538 | * exporting to direct-bgp. | |
539 | * | |
540 | * Build a list of NVEs that use this import table | |
541 | */ | |
542 | *nves = NULL; | |
543 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
544 | rfgn)) { | |
545 | ||
546 | /* | |
547 | * If this NVE-Group's import table matches the current one | |
548 | */ | |
549 | if (rfgn->rfg && rfgn->rfg->nves | |
550 | && rfgn->rfg->rfapi_import_table == it) { | |
551 | ||
552 | nve_group_to_nve_list(rfgn->rfg, nves, family); | |
553 | } | |
554 | } | |
65efcfce LB |
555 | } |
556 | ||
d62a17ae | 557 | static void vnc_zebra_add_del_prefix(struct bgp *bgp, |
558 | struct rfapi_import_table *import_table, | |
fe08ba7e | 559 | struct agg_node *rn, |
d62a17ae | 560 | int add) /* !0 = add, 0 = del */ |
65efcfce | 561 | { |
d62a17ae | 562 | struct list *nves; |
563 | ||
a74e593b | 564 | unsigned int nexthop_count = 0; |
d62a17ae | 565 | void *nh_ary = NULL; |
566 | void *nhp_ary = NULL; | |
567 | ||
568 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
569 | ||
570 | if (zclient_vnc->sock < 0) | |
571 | return; | |
572 | ||
573 | if (rn->p.family != AF_INET && rn->p.family != AF_INET6) { | |
450971aa | 574 | flog_err(EC_LIB_DEVELOPMENT, |
1c50c1c0 | 575 | "%s: invalid route node addr family", __func__); |
d62a17ae | 576 | return; |
577 | } | |
578 | ||
9f2337c9 RW |
579 | if (!vrf_bitmap_check(zclient_vnc->redist[family2afi(rn->p.family)] |
580 | [ZEBRA_ROUTE_VNC], | |
581 | VRF_DEFAULT)) | |
d62a17ae | 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 | ||
0a22ddfb QY |
608 | XFREE(MTYPE_TMP, nhp_ary); |
609 | XFREE(MTYPE_TMP, nh_ary); | |
65efcfce LB |
610 | } |
611 | ||
d62a17ae | 612 | void vnc_zebra_add_prefix(struct bgp *bgp, |
613 | struct rfapi_import_table *import_table, | |
fe08ba7e | 614 | struct agg_node *rn) |
65efcfce | 615 | { |
d62a17ae | 616 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 1); |
65efcfce LB |
617 | } |
618 | ||
d62a17ae | 619 | void vnc_zebra_del_prefix(struct bgp *bgp, |
620 | struct rfapi_import_table *import_table, | |
fe08ba7e | 621 | struct agg_node *rn) |
65efcfce | 622 | { |
d62a17ae | 623 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 0); |
65efcfce LB |
624 | } |
625 | ||
626 | ||
d62a17ae | 627 | static void vnc_zebra_add_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd, |
628 | int add) /* 0 = del, !0 = add */ | |
65efcfce | 629 | { |
d62a17ae | 630 | struct listnode *node; |
631 | struct rfapi_rfg_name *rfgn; | |
632 | struct rfapi_nve_group_cfg *rfg = rfd->rfg; | |
633 | afi_t afi = family2afi(rfd->vn_addr.addr_family); | |
634 | struct prefix nhp; | |
635 | // struct prefix *nhpp; | |
636 | void *pAddr; | |
637 | ||
638 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
639 | ||
640 | if (zclient_vnc->sock < 0) | |
641 | return; | |
642 | ||
9f2337c9 RW |
643 | if (!vrf_bitmap_check(zclient_vnc->redist[afi][ZEBRA_ROUTE_VNC], |
644 | VRF_DEFAULT)) | |
d62a17ae | 645 | return; |
646 | ||
647 | if (afi != AFI_IP && afi != AFI_IP6) { | |
450971aa | 648 | flog_err(EC_LIB_DEVELOPMENT, "%s: invalid vn addr family", |
1c50c1c0 | 649 | __func__); |
d62a17ae | 650 | return; |
651 | } | |
652 | ||
653 | if (!bgp) | |
654 | return; | |
655 | if (!bgp->rfapi_cfg) { | |
656 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
657 | __func__); | |
658 | return; | |
659 | } | |
660 | ||
661 | if (rfapiRaddr2Qprefix(&rfd->vn_addr, &nhp)) { | |
662 | vnc_zlog_debug_verbose("%s: can't convert vn address, skipping", | |
663 | __func__); | |
664 | return; | |
665 | } | |
666 | ||
667 | pAddr = &nhp.u.prefix4; | |
668 | ||
669 | /* | |
670 | * Loop over the list of NVE-Groups configured for | |
671 | * exporting to zebra and see if this new NVE's | |
672 | * group is among them. | |
673 | */ | |
674 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
675 | rfgn)) { | |
676 | ||
677 | /* | |
678 | * Yes, this NVE's group is configured for export to zebra | |
679 | */ | |
680 | if (rfgn->rfg == rfg) { | |
681 | ||
fe08ba7e DS |
682 | struct agg_table *rt = NULL; |
683 | struct agg_node *rn; | |
d62a17ae | 684 | struct rfapi_import_table *import_table; |
685 | import_table = rfg->rfapi_import_table; | |
686 | ||
687 | vnc_zlog_debug_verbose( | |
688 | "%s: this nve's group is in zebra export list", | |
689 | __func__); | |
690 | ||
691 | rt = import_table->imported_vpn[afi]; | |
692 | ||
693 | /* | |
694 | * Walk the NVE-Group's VNC Import table | |
695 | */ | |
fe08ba7e DS |
696 | for (rn = agg_route_top(rt); rn; |
697 | rn = agg_route_next(rn)) { | |
d62a17ae | 698 | |
699 | if (rn->info) { | |
700 | ||
701 | vnc_zlog_debug_verbose( | |
702 | "%s: sending %s", __func__, | |
703 | (add ? "add" : "del")); | |
704 | vnc_zebra_route_msg(&rn->p, 1, &pAddr, | |
705 | add); | |
706 | } | |
707 | } | |
708 | } | |
709 | } | |
65efcfce LB |
710 | } |
711 | ||
d62a17ae | 712 | void vnc_zebra_add_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 713 | { |
d62a17ae | 714 | vnc_zebra_add_del_nve(bgp, rfd, 1); |
65efcfce LB |
715 | } |
716 | ||
d62a17ae | 717 | void vnc_zebra_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 718 | { |
d62a17ae | 719 | vnc_zebra_add_del_nve(bgp, rfd, 0); |
65efcfce LB |
720 | } |
721 | ||
d62a17ae | 722 | static void vnc_zebra_add_del_group_afi(struct bgp *bgp, |
723 | struct rfapi_nve_group_cfg *rfg, | |
724 | afi_t afi, int add) | |
65efcfce | 725 | { |
fe08ba7e DS |
726 | struct agg_table *rt = NULL; |
727 | struct agg_node *rn; | |
d62a17ae | 728 | struct rfapi_import_table *import_table; |
729 | uint8_t family = afi2family(afi); | |
730 | ||
731 | struct list *nves = NULL; | |
a74e593b | 732 | unsigned int nexthop_count = 0; |
d62a17ae | 733 | void *nh_ary = NULL; |
734 | void *nhp_ary = NULL; | |
735 | ||
736 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
737 | import_table = rfg->rfapi_import_table; | |
738 | if (!import_table) { | |
739 | vnc_zlog_debug_verbose( | |
740 | "%s: import table not defined, returning", __func__); | |
741 | return; | |
742 | } | |
743 | ||
744 | if (afi == AFI_IP || afi == AFI_IP6) { | |
745 | rt = import_table->imported_vpn[afi]; | |
746 | } else { | |
450971aa | 747 | flog_err(EC_LIB_DEVELOPMENT, "%s: bad afi %d", __func__, afi); |
d62a17ae | 748 | return; |
749 | } | |
750 | ||
751 | if (!family) { | |
450971aa | 752 | flog_err(EC_LIB_DEVELOPMENT, "%s: computed bad family: %d", |
1c50c1c0 | 753 | __func__, family); |
d62a17ae | 754 | return; |
755 | } | |
756 | ||
757 | if (!rfg->nves) { | |
758 | /* avoid segfault below if list doesn't exist */ | |
759 | vnc_zlog_debug_verbose("%s: no NVEs in this group", __func__); | |
760 | return; | |
761 | } | |
762 | ||
763 | nve_group_to_nve_list(rfg, &nves, family); | |
764 | if (nves) { | |
765 | vnc_zlog_debug_verbose("%s: have nves", __func__); | |
766 | nve_list_to_nh_array(family, nves, &nexthop_count, &nh_ary, | |
767 | &nhp_ary); | |
768 | ||
769 | vnc_zlog_debug_verbose("%s: family: %d, nve count: %d", | |
770 | __func__, family, nexthop_count); | |
771 | ||
6a154c88 | 772 | list_delete(&nves); |
d62a17ae | 773 | |
774 | if (nexthop_count) { | |
775 | /* | |
776 | * Walk the NVE-Group's VNC Import table | |
777 | */ | |
fe08ba7e DS |
778 | for (rn = agg_route_top(rt); rn; |
779 | rn = agg_route_next(rn)) { | |
d62a17ae | 780 | if (rn->info) { |
781 | vnc_zebra_route_msg(&rn->p, | |
782 | nexthop_count, | |
783 | nhp_ary, add); | |
784 | } | |
785 | } | |
786 | } | |
0a22ddfb QY |
787 | XFREE(MTYPE_TMP, nhp_ary); |
788 | XFREE(MTYPE_TMP, nh_ary); | |
d62a17ae | 789 | } |
65efcfce LB |
790 | } |
791 | ||
d62a17ae | 792 | void vnc_zebra_add_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 793 | { |
d62a17ae | 794 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 1); |
795 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 1); | |
65efcfce LB |
796 | } |
797 | ||
d62a17ae | 798 | void vnc_zebra_del_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 799 | { |
d62a17ae | 800 | vnc_zlog_debug_verbose("%s: entry", __func__); |
801 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 0); | |
802 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 0); | |
65efcfce LB |
803 | } |
804 | ||
d62a17ae | 805 | void vnc_zebra_reexport_group_afi(struct bgp *bgp, |
806 | struct rfapi_nve_group_cfg *rfg, afi_t afi) | |
65efcfce | 807 | { |
d62a17ae | 808 | struct listnode *node; |
809 | struct rfapi_rfg_name *rfgn; | |
810 | ||
811 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
812 | rfgn)) { | |
813 | ||
814 | if (rfgn->rfg == rfg) { | |
815 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 0); | |
816 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 1); | |
817 | break; | |
818 | } | |
819 | } | |
65efcfce LB |
820 | } |
821 | ||
822 | ||
823 | /*********************************************************************** | |
824 | * CONTROL INTERFACE | |
825 | ***********************************************************************/ | |
826 | ||
827 | ||
828 | /* Other routes redistribution into BGP. */ | |
d62a17ae | 829 | int vnc_redistribute_set(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 830 | { |
d62a17ae | 831 | if (!bgp->rfapi_cfg) { |
832 | return CMD_WARNING_CONFIG_FAILED; | |
833 | } | |
65efcfce | 834 | |
d62a17ae | 835 | /* Set flag to BGP instance. */ |
836 | bgp->rfapi_cfg->redist[afi][type] = 1; | |
65efcfce | 837 | |
d62a17ae | 838 | // bgp->redist[afi][type] = 1; |
65efcfce | 839 | |
d62a17ae | 840 | /* Return if already redistribute flag is set. */ |
9f2337c9 | 841 | if (vrf_bitmap_check(zclient_vnc->redist[afi][type], VRF_DEFAULT)) |
d62a17ae | 842 | return CMD_WARNING_CONFIG_FAILED; |
65efcfce | 843 | |
d62a17ae | 844 | vrf_bitmap_set(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
65efcfce | 845 | |
9f2337c9 | 846 | // vrf_bitmap_set(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
65efcfce | 847 | |
d62a17ae | 848 | /* Return if zebra connection is not established. */ |
849 | if (zclient_vnc->sock < 0) | |
850 | return CMD_WARNING_CONFIG_FAILED; | |
65efcfce | 851 | |
d62a17ae | 852 | if (BGP_DEBUG(zebra, ZEBRA)) |
853 | vnc_zlog_debug_verbose("Zebra send: redistribute add %s", | |
854 | zebra_route_string(type)); | |
65efcfce | 855 | |
d62a17ae | 856 | /* Send distribute add message to zebra. */ |
857 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient_vnc, afi, type, | |
858 | 0, VRF_DEFAULT); | |
65efcfce | 859 | |
d62a17ae | 860 | return CMD_SUCCESS; |
65efcfce LB |
861 | } |
862 | ||
863 | /* Unset redistribution. */ | |
d62a17ae | 864 | int vnc_redistribute_unset(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 865 | { |
d62a17ae | 866 | vnc_zlog_debug_verbose("%s: type=%d entry", __func__, type); |
867 | ||
868 | if (!bgp->rfapi_cfg) { | |
869 | vnc_zlog_debug_verbose("%s: return (no rfapi_cfg)", __func__); | |
870 | return CMD_WARNING_CONFIG_FAILED; | |
871 | } | |
872 | ||
873 | /* Unset flag from BGP instance. */ | |
874 | bgp->rfapi_cfg->redist[afi][type] = 0; | |
875 | ||
876 | /* Return if zebra connection is disabled. */ | |
9f2337c9 | 877 | if (!vrf_bitmap_check(zclient_vnc->redist[afi][type], VRF_DEFAULT)) |
d62a17ae | 878 | return CMD_WARNING_CONFIG_FAILED; |
9f2337c9 | 879 | vrf_bitmap_unset(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
d62a17ae | 880 | |
881 | if (bgp->rfapi_cfg->redist[AFI_IP][type] == 0 | |
882 | && bgp->rfapi_cfg->redist[AFI_IP6][type] == 0 | |
883 | && zclient_vnc->sock >= 0) { | |
884 | /* Send distribute delete message to zebra. */ | |
885 | if (BGP_DEBUG(zebra, ZEBRA)) | |
886 | vnc_zlog_debug_verbose( | |
887 | "Zebra send: redistribute delete %s", | |
888 | zebra_route_string(type)); | |
889 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient_vnc, | |
890 | afi, type, 0, VRF_DEFAULT); | |
891 | } | |
892 | ||
893 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
894 | vnc_redistribute_withdraw(bgp, afi, type); | |
895 | ||
896 | vnc_zlog_debug_verbose("%s: return", __func__); | |
897 | ||
898 | return CMD_SUCCESS; | |
65efcfce LB |
899 | } |
900 | ||
342213ea | 901 | extern struct zebra_privs_t bgpd_privs; |
65efcfce LB |
902 | |
903 | /* | |
904 | * Modeled after bgp_zebra.c'bgp_zebra_init() | |
905 | * Charriere asks, "Is it possible to carry two?" | |
906 | */ | |
d62a17ae | 907 | void vnc_zebra_init(struct thread_master *master) |
65efcfce | 908 | { |
d62a17ae | 909 | /* Set default values. */ |
26f63a1e | 910 | zclient_vnc = zclient_new(master, &zclient_options_default); |
342213ea | 911 | zclient_init(zclient_vnc, ZEBRA_ROUTE_VNC, 0, &bgpd_privs); |
d62a17ae | 912 | |
74489921 RW |
913 | zclient_vnc->redistribute_route_add = vnc_zebra_read_route; |
914 | zclient_vnc->redistribute_route_del = vnc_zebra_read_route; | |
65efcfce LB |
915 | } |
916 | ||
d62a17ae | 917 | void vnc_zebra_destroy(void) |
65efcfce | 918 | { |
d62a17ae | 919 | if (zclient_vnc == NULL) |
920 | return; | |
921 | zclient_stop(zclient_vnc); | |
922 | zclient_free(zclient_vnc); | |
923 | zclient_vnc = NULL; | |
65efcfce | 924 | } |