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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: | |
12256b84 DA |
108 | if (bgp->rfapi_cfg->rfg_redist->vn_prefix.prefixlen |
109 | != IPV4_MAX_BITLEN) { | |
d62a17ae | 110 | vnc_zlog_debug_verbose( |
111 | "%s: redist nve group VN prefix len (%d) != 32, skipping", | |
112 | __func__, | |
113 | bgp->rfapi_cfg->rfg_redist->vn_prefix | |
114 | .prefixlen); | |
115 | return; | |
116 | } | |
117 | vnaddr.addr.v4 = | |
118 | bgp->rfapi_cfg->rfg_redist->vn_prefix.u.prefix4; | |
119 | break; | |
120 | case AF_INET6: | |
13ccce6e DA |
121 | if (bgp->rfapi_cfg->rfg_redist->vn_prefix.prefixlen |
122 | != IPV6_MAX_BITLEN) { | |
d62a17ae | 123 | vnc_zlog_debug_verbose( |
124 | "%s: redist nve group VN prefix len (%d) != 128, skipping", | |
125 | __func__, | |
126 | bgp->rfapi_cfg->rfg_redist->vn_prefix | |
127 | .prefixlen); | |
128 | return; | |
129 | } | |
130 | vnaddr.addr.v6 = | |
131 | bgp->rfapi_cfg->rfg_redist->vn_prefix.u.prefix6; | |
132 | break; | |
133 | default: | |
134 | vnc_zlog_debug_verbose( | |
135 | "%s: no redist nve group VN host prefix configured, skipping", | |
136 | __func__); | |
137 | return; | |
138 | } | |
139 | ||
140 | /* | |
141 | * Assume nve group's configured UN address prefix is a host | |
142 | * route which also happens to give the NVE UN address to use | |
143 | * for redistributing into VNC. | |
144 | */ | |
145 | ||
146 | /* | |
147 | * Set UN address in dummy nve descriptor so add_vnc_route | |
148 | * can use it in VNC tunnel SubTLV | |
149 | */ | |
150 | { | |
151 | struct rfapi_ip_prefix pfx_un; | |
152 | ||
153 | rfapiQprefix2Rprefix(&bgp->rfapi_cfg->rfg_redist->un_prefix, | |
154 | &pfx_un); | |
155 | ||
156 | switch (pfx_un.prefix.addr_family) { | |
157 | case AF_INET: | |
12256b84 | 158 | if (pfx_un.length != IPV4_MAX_BITLEN) { |
d62a17ae | 159 | vnc_zlog_debug_verbose( |
160 | "%s: redist nve group UN prefix len (%d) != 32, skipping", | |
161 | __func__, pfx_un.length); | |
162 | return; | |
163 | } | |
164 | break; | |
165 | case AF_INET6: | |
13ccce6e | 166 | if (pfx_un.length != IPV6_MAX_BITLEN) { |
d62a17ae | 167 | vnc_zlog_debug_verbose( |
168 | "%s: redist nve group UN prefix len (%d) != 128, skipping", | |
169 | __func__, pfx_un.length); | |
170 | return; | |
171 | } | |
172 | break; | |
173 | default: | |
174 | vnc_zlog_debug_verbose( | |
175 | "%s: no redist nve group UN host prefix configured, skipping", | |
176 | __func__); | |
177 | return; | |
178 | } | |
179 | ||
180 | vncHD1VR.un_addr = pfx_un.prefix; | |
181 | ||
182 | if (!vncHD1VR.peer) { | |
183 | /* | |
184 | * Same setup as in rfapi_open() | |
185 | */ | |
186 | vncHD1VR.peer = peer_new(bgp); | |
187 | vncHD1VR.peer->status = | |
188 | Established; /* keep bgp core happy */ | |
189 | bgp_sync_delete(vncHD1VR.peer); /* don't need these */ | |
424ab01d | 190 | |
becedef6 QY |
191 | /* |
192 | * since this peer is not on the I/O thread, this lock | |
193 | * is not strictly necessary, but serves as a reminder | |
194 | * to those who may meddle... | |
195 | */ | |
00dffa8c | 196 | frr_with_mutex(&vncHD1VR.peer->io_mtx) { |
424ab01d QY |
197 | // we don't need any I/O related facilities |
198 | if (vncHD1VR.peer->ibuf) | |
199 | stream_fifo_free(vncHD1VR.peer->ibuf); | |
200 | if (vncHD1VR.peer->obuf) | |
201 | stream_fifo_free(vncHD1VR.peer->obuf); | |
202 | ||
203 | if (vncHD1VR.peer->ibuf_work) | |
74ffbfe6 | 204 | ringbuf_del(vncHD1VR.peer->ibuf_work); |
424ab01d QY |
205 | if (vncHD1VR.peer->obuf_work) |
206 | stream_free(vncHD1VR.peer->obuf_work); | |
207 | ||
d62a17ae | 208 | vncHD1VR.peer->ibuf = NULL; |
d62a17ae | 209 | vncHD1VR.peer->obuf = NULL; |
424ab01d QY |
210 | vncHD1VR.peer->obuf_work = NULL; |
211 | vncHD1VR.peer->ibuf_work = NULL; | |
d62a17ae | 212 | } |
424ab01d | 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; | |
9bcb3eef DS |
291 | struct bgp_dest *pdest; |
292 | struct bgp_dest *dest; | |
d62a17ae | 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 | */ | |
9bcb3eef DS |
307 | for (pdest = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); pdest; |
308 | pdest = bgp_route_next(pdest)) { | |
309 | const struct prefix *pdest_p = bgp_dest_get_prefix(pdest); | |
b54892e0 | 310 | |
d62a17ae | 311 | memset(&prd, 0, sizeof(prd)); |
312 | prd.family = AF_UNSPEC; | |
313 | prd.prefixlen = 64; | |
9bcb3eef | 314 | memcpy(prd.val, pdest_p->u.val, 8); |
d62a17ae | 315 | |
316 | /* This is the per-RD table of prefixes */ | |
9bcb3eef | 317 | table = bgp_dest_get_bgp_table_info(pdest); |
2eab1324 RW |
318 | if (!table) |
319 | continue; | |
d62a17ae | 320 | |
9bcb3eef DS |
321 | for (dest = bgp_table_top(table); dest; |
322 | dest = bgp_route_next(dest)) { | |
d62a17ae | 323 | |
4b7e6066 | 324 | struct bgp_path_info *ri; |
d62a17ae | 325 | |
9bcb3eef | 326 | for (ri = bgp_dest_get_bgp_path_info(dest); ri; |
6f94b685 | 327 | ri = ri->next) { |
d62a17ae | 328 | if (ri->type |
329 | == type) { /* has matching redist type */ | |
330 | break; | |
331 | } | |
332 | } | |
333 | if (ri) { | |
334 | del_vnc_route( | |
335 | &vncHD1VR, /* use dummy ptr as cookie */ | |
336 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, | |
9bcb3eef | 337 | bgp_dest_get_prefix(dest), &prd, type, |
d62a17ae | 338 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); |
339 | } | |
340 | } | |
341 | } | |
342 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce LB |
343 | } |
344 | ||
345 | /* | |
346 | * Zebra route add and delete treatment. | |
347 | * | |
348 | * Assumes 1 nexthop | |
349 | */ | |
121f9dee | 350 | static int vnc_zebra_read_route(ZAPI_CALLBACK_ARGS) |
65efcfce | 351 | { |
74489921 RW |
352 | struct zapi_route api; |
353 | int add; | |
d62a17ae | 354 | |
74489921 RW |
355 | if (zapi_route_decode(zclient->ibuf, &api) < 0) |
356 | return -1; | |
65efcfce | 357 | |
74489921 RW |
358 | /* we completely ignore srcdest routes for now. */ |
359 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
d62a17ae | 360 | return 0; |
361 | ||
121f9dee | 362 | add = (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD); |
74489921 RW |
363 | if (add) |
364 | vnc_redistribute_add(&api.prefix, api.metric, api.type); | |
d62a17ae | 365 | else |
74489921 | 366 | vnc_redistribute_delete(&api.prefix, api.type); |
d62a17ae | 367 | |
2dbe669b | 368 | if (BGP_DEBUG(zebra, ZEBRA)) |
74489921 | 369 | vnc_zlog_debug_verbose( |
2dbe669b DA |
370 | "%s: Zebra rcvd: route delete %s %pFX metric %u", |
371 | __func__, zebra_route_string(api.type), &api.prefix, | |
74489921 | 372 | api.metric); |
d62a17ae | 373 | |
374 | return 0; | |
65efcfce LB |
375 | } |
376 | ||
377 | /*********************************************************************** | |
378 | * vnc_bgp_zebra_*: VNC sends updates/withdraws to Zebra | |
379 | ***********************************************************************/ | |
380 | ||
381 | /* | |
382 | * low-level message builder | |
383 | */ | |
26a3ffd6 | 384 | static void vnc_zebra_route_msg(const struct prefix *p, unsigned int nhp_count, |
a74e593b | 385 | void *nhp_ary, int add) /* 1 = add, 0 = del */ |
65efcfce | 386 | { |
2ad4f093 RW |
387 | struct zapi_route api; |
388 | struct zapi_nexthop *api_nh; | |
389 | int i; | |
b40c5062 LB |
390 | struct in_addr **nhp_ary4 = nhp_ary; |
391 | struct in6_addr **nhp_ary6 = nhp_ary; | |
2ad4f093 | 392 | |
d62a17ae | 393 | if (!nhp_count) { |
394 | vnc_zlog_debug_verbose("%s: empty nexthop list, skipping", | |
395 | __func__); | |
396 | return; | |
397 | } | |
398 | ||
2ad4f093 RW |
399 | memset(&api, 0, sizeof(api)); |
400 | api.vrf_id = VRF_DEFAULT; | |
401 | api.type = ZEBRA_ROUTE_VNC; | |
402 | api.safi = SAFI_UNICAST; | |
403 | api.prefix = *p; | |
404 | ||
405 | /* Nexthops */ | |
406 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
a74e593b RW |
407 | api.nexthop_num = MIN(nhp_count, multipath_num); |
408 | for (i = 0; i < api.nexthop_num; i++) { | |
2ad4f093 RW |
409 | |
410 | api_nh = &api.nexthops[i]; | |
4a7371e9 | 411 | api_nh->vrf_id = VRF_DEFAULT; |
2ad4f093 RW |
412 | switch (p->family) { |
413 | case AF_INET: | |
b40c5062 | 414 | memcpy(&api_nh->gate.ipv4, nhp_ary4[i], |
9913029c RW |
415 | sizeof(api_nh->gate.ipv4)); |
416 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
2ad4f093 RW |
417 | break; |
418 | case AF_INET6: | |
b40c5062 | 419 | memcpy(&api_nh->gate.ipv6, nhp_ary6[i], |
9913029c RW |
420 | sizeof(api_nh->gate.ipv6)); |
421 | api_nh->type = NEXTHOP_TYPE_IPV6; | |
2ad4f093 | 422 | break; |
9913029c | 423 | } |
2ad4f093 | 424 | } |
9913029c | 425 | |
2dbe669b | 426 | if (BGP_DEBUG(zebra, ZEBRA)) |
d62a17ae | 427 | vnc_zlog_debug_verbose( |
2dbe669b DA |
428 | "%s: Zebra send: route %s %pFX, nhp_count=%d", __func__, |
429 | (add ? "add" : "del"), &api.prefix, nhp_count); | |
2ad4f093 RW |
430 | |
431 | zclient_route_send((add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE), | |
432 | zclient_vnc, &api); | |
65efcfce LB |
433 | } |
434 | ||
435 | ||
436 | static void | |
d7c0a89a | 437 | nve_list_to_nh_array(uint8_t family, struct list *nve_list, |
a74e593b | 438 | unsigned int *nh_count_ret, |
d62a17ae | 439 | void **nh_ary_ret, /* returned address array */ |
440 | void **nhp_ary_ret) /* returned pointer array */ | |
65efcfce | 441 | { |
d62a17ae | 442 | int nve_count = listcount(nve_list); |
65efcfce | 443 | |
d62a17ae | 444 | *nh_count_ret = 0; |
445 | *nh_ary_ret = NULL; | |
446 | *nhp_ary_ret = NULL; | |
65efcfce | 447 | |
d62a17ae | 448 | if (!nve_count) { |
449 | vnc_zlog_debug_verbose("%s: empty nve_list, skipping", | |
450 | __func__); | |
451 | return; | |
452 | } | |
65efcfce | 453 | |
d62a17ae | 454 | if (family == AF_INET) { |
455 | struct listnode *ln; | |
456 | struct in_addr *iap; | |
457 | struct in_addr **v; | |
65efcfce | 458 | |
d62a17ae | 459 | /* |
460 | * Array of nexthop addresses | |
461 | */ | |
462 | *nh_ary_ret = | |
463 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in_addr)); | |
65efcfce | 464 | |
d62a17ae | 465 | /* |
466 | * Array of pointers to nexthop addresses | |
467 | */ | |
468 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, | |
469 | nve_count * sizeof(struct in_addr *)); | |
470 | iap = *nh_ary_ret; | |
471 | v = *nhp_ary_ret; | |
65efcfce | 472 | |
d62a17ae | 473 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 474 | |
d62a17ae | 475 | struct rfapi_descriptor *irfd; |
476 | struct prefix nhp; | |
65efcfce | 477 | |
d62a17ae | 478 | irfd = listgetdata(ln); |
65efcfce | 479 | |
d62a17ae | 480 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
481 | continue; | |
65efcfce | 482 | |
d62a17ae | 483 | *iap = nhp.u.prefix4; |
484 | *v = iap; | |
485 | vnc_zlog_debug_verbose( | |
486 | "%s: ipadr: (%p)<-0x%x, ptr: (%p)<-%p", | |
487 | __func__, iap, nhp.u.prefix4.s_addr, v, iap); | |
65efcfce | 488 | |
d62a17ae | 489 | ++iap; |
490 | ++v; | |
491 | ++*nh_count_ret; | |
492 | } | |
65efcfce | 493 | |
d62a17ae | 494 | } else if (family == AF_INET6) { |
65efcfce | 495 | |
d62a17ae | 496 | struct listnode *ln; |
65efcfce | 497 | |
d62a17ae | 498 | *nh_ary_ret = |
499 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in6_addr)); | |
65efcfce | 500 | |
d62a17ae | 501 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, |
502 | nve_count * sizeof(struct in6_addr *)); | |
65efcfce | 503 | |
d62a17ae | 504 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 505 | |
d62a17ae | 506 | struct rfapi_descriptor *irfd; |
507 | struct in6_addr *iap = *nh_ary_ret; | |
508 | struct in6_addr **v = *nhp_ary_ret; | |
509 | struct prefix nhp; | |
65efcfce | 510 | |
d62a17ae | 511 | irfd = listgetdata(ln); |
65efcfce | 512 | |
d62a17ae | 513 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
514 | continue; | |
65efcfce | 515 | |
d62a17ae | 516 | *iap = nhp.u.prefix6; |
517 | *v = iap; | |
65efcfce | 518 | |
d62a17ae | 519 | ++iap; |
520 | ++v; | |
521 | ++*nh_count_ret; | |
522 | } | |
523 | } | |
65efcfce LB |
524 | } |
525 | ||
d62a17ae | 526 | static void import_table_to_nve_list_zebra(struct bgp *bgp, |
527 | struct rfapi_import_table *it, | |
528 | struct list **nves, uint8_t family) | |
65efcfce | 529 | { |
d62a17ae | 530 | struct listnode *node; |
531 | struct rfapi_rfg_name *rfgn; | |
532 | ||
533 | /* | |
534 | * Loop over the list of NVE-Groups configured for | |
535 | * exporting to direct-bgp. | |
536 | * | |
537 | * Build a list of NVEs that use this import table | |
538 | */ | |
539 | *nves = NULL; | |
540 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
541 | rfgn)) { | |
542 | ||
543 | /* | |
544 | * If this NVE-Group's import table matches the current one | |
545 | */ | |
546 | if (rfgn->rfg && rfgn->rfg->nves | |
547 | && rfgn->rfg->rfapi_import_table == it) { | |
548 | ||
549 | nve_group_to_nve_list(rfgn->rfg, nves, family); | |
550 | } | |
551 | } | |
65efcfce LB |
552 | } |
553 | ||
d62a17ae | 554 | static void vnc_zebra_add_del_prefix(struct bgp *bgp, |
555 | struct rfapi_import_table *import_table, | |
fe08ba7e | 556 | struct agg_node *rn, |
d62a17ae | 557 | int add) /* !0 = add, 0 = del */ |
65efcfce | 558 | { |
d62a17ae | 559 | struct list *nves; |
26a3ffd6 | 560 | const struct prefix *p = agg_node_get_prefix(rn); |
a74e593b | 561 | unsigned int nexthop_count = 0; |
d62a17ae | 562 | void *nh_ary = NULL; |
563 | void *nhp_ary = NULL; | |
564 | ||
565 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
566 | ||
567 | if (zclient_vnc->sock < 0) | |
568 | return; | |
569 | ||
26a3ffd6 | 570 | if (p->family != AF_INET && p->family != AF_INET6) { |
450971aa | 571 | flog_err(EC_LIB_DEVELOPMENT, |
1c50c1c0 | 572 | "%s: invalid route node addr family", __func__); |
d62a17ae | 573 | return; |
574 | } | |
575 | ||
26a3ffd6 DS |
576 | if (!vrf_bitmap_check( |
577 | zclient_vnc->redist[family2afi(p->family)][ZEBRA_ROUTE_VNC], | |
578 | VRF_DEFAULT)) | |
d62a17ae | 579 | return; |
580 | ||
581 | if (!bgp->rfapi_cfg) { | |
582 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
583 | __func__); | |
584 | return; | |
585 | } | |
586 | if (!listcount(bgp->rfapi_cfg->rfg_export_zebra_l)) { | |
587 | vnc_zlog_debug_verbose( | |
588 | "%s: no zebra export nve group, skipping", __func__); | |
589 | return; | |
590 | } | |
591 | ||
26a3ffd6 | 592 | import_table_to_nve_list_zebra(bgp, import_table, &nves, p->family); |
d62a17ae | 593 | |
594 | if (nves) { | |
26a3ffd6 DS |
595 | nve_list_to_nh_array(p->family, nves, &nexthop_count, &nh_ary, |
596 | &nhp_ary); | |
d62a17ae | 597 | |
6a154c88 | 598 | list_delete(&nves); |
d62a17ae | 599 | |
600 | if (nexthop_count) | |
26a3ffd6 | 601 | vnc_zebra_route_msg(p, nexthop_count, nhp_ary, add); |
d62a17ae | 602 | } |
603 | ||
0a22ddfb QY |
604 | XFREE(MTYPE_TMP, nhp_ary); |
605 | XFREE(MTYPE_TMP, nh_ary); | |
65efcfce LB |
606 | } |
607 | ||
d62a17ae | 608 | void vnc_zebra_add_prefix(struct bgp *bgp, |
609 | struct rfapi_import_table *import_table, | |
fe08ba7e | 610 | struct agg_node *rn) |
65efcfce | 611 | { |
d62a17ae | 612 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 1); |
65efcfce LB |
613 | } |
614 | ||
d62a17ae | 615 | void vnc_zebra_del_prefix(struct bgp *bgp, |
616 | struct rfapi_import_table *import_table, | |
fe08ba7e | 617 | struct agg_node *rn) |
65efcfce | 618 | { |
d62a17ae | 619 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 0); |
65efcfce LB |
620 | } |
621 | ||
622 | ||
d62a17ae | 623 | static void vnc_zebra_add_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd, |
624 | int add) /* 0 = del, !0 = add */ | |
65efcfce | 625 | { |
d62a17ae | 626 | struct listnode *node; |
627 | struct rfapi_rfg_name *rfgn; | |
628 | struct rfapi_nve_group_cfg *rfg = rfd->rfg; | |
629 | afi_t afi = family2afi(rfd->vn_addr.addr_family); | |
630 | struct prefix nhp; | |
631 | // struct prefix *nhpp; | |
632 | void *pAddr; | |
633 | ||
634 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
635 | ||
636 | if (zclient_vnc->sock < 0) | |
637 | return; | |
638 | ||
9f2337c9 RW |
639 | if (!vrf_bitmap_check(zclient_vnc->redist[afi][ZEBRA_ROUTE_VNC], |
640 | VRF_DEFAULT)) | |
d62a17ae | 641 | return; |
642 | ||
643 | if (afi != AFI_IP && afi != AFI_IP6) { | |
450971aa | 644 | flog_err(EC_LIB_DEVELOPMENT, "%s: invalid vn addr family", |
1c50c1c0 | 645 | __func__); |
d62a17ae | 646 | return; |
647 | } | |
648 | ||
649 | if (!bgp) | |
650 | return; | |
651 | if (!bgp->rfapi_cfg) { | |
652 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
653 | __func__); | |
654 | return; | |
655 | } | |
656 | ||
657 | if (rfapiRaddr2Qprefix(&rfd->vn_addr, &nhp)) { | |
658 | vnc_zlog_debug_verbose("%s: can't convert vn address, skipping", | |
659 | __func__); | |
660 | return; | |
661 | } | |
662 | ||
663 | pAddr = &nhp.u.prefix4; | |
664 | ||
665 | /* | |
666 | * Loop over the list of NVE-Groups configured for | |
667 | * exporting to zebra and see if this new NVE's | |
668 | * group is among them. | |
669 | */ | |
670 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
671 | rfgn)) { | |
672 | ||
673 | /* | |
674 | * Yes, this NVE's group is configured for export to zebra | |
675 | */ | |
676 | if (rfgn->rfg == rfg) { | |
677 | ||
fe08ba7e DS |
678 | struct agg_table *rt = NULL; |
679 | struct agg_node *rn; | |
d62a17ae | 680 | struct rfapi_import_table *import_table; |
681 | import_table = rfg->rfapi_import_table; | |
682 | ||
683 | vnc_zlog_debug_verbose( | |
684 | "%s: this nve's group is in zebra export list", | |
685 | __func__); | |
686 | ||
687 | rt = import_table->imported_vpn[afi]; | |
688 | ||
689 | /* | |
690 | * Walk the NVE-Group's VNC Import table | |
691 | */ | |
fe08ba7e DS |
692 | for (rn = agg_route_top(rt); rn; |
693 | rn = agg_route_next(rn)) { | |
26a3ffd6 DS |
694 | if (!rn->info) |
695 | continue; | |
696 | ||
697 | vnc_zlog_debug_verbose("%s: sending %s", | |
698 | __func__, | |
699 | (add ? "add" : "del")); | |
700 | vnc_zebra_route_msg(agg_node_get_prefix(rn), 1, | |
701 | &pAddr, add); | |
d62a17ae | 702 | } |
703 | } | |
704 | } | |
65efcfce LB |
705 | } |
706 | ||
d62a17ae | 707 | void vnc_zebra_add_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 708 | { |
d62a17ae | 709 | vnc_zebra_add_del_nve(bgp, rfd, 1); |
65efcfce LB |
710 | } |
711 | ||
d62a17ae | 712 | void vnc_zebra_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 713 | { |
d62a17ae | 714 | vnc_zebra_add_del_nve(bgp, rfd, 0); |
65efcfce LB |
715 | } |
716 | ||
d62a17ae | 717 | static void vnc_zebra_add_del_group_afi(struct bgp *bgp, |
718 | struct rfapi_nve_group_cfg *rfg, | |
719 | afi_t afi, int add) | |
65efcfce | 720 | { |
fe08ba7e DS |
721 | struct agg_table *rt = NULL; |
722 | struct agg_node *rn; | |
d62a17ae | 723 | struct rfapi_import_table *import_table; |
724 | uint8_t family = afi2family(afi); | |
725 | ||
726 | struct list *nves = NULL; | |
a74e593b | 727 | unsigned int nexthop_count = 0; |
d62a17ae | 728 | void *nh_ary = NULL; |
729 | void *nhp_ary = NULL; | |
730 | ||
731 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
732 | import_table = rfg->rfapi_import_table; | |
733 | if (!import_table) { | |
734 | vnc_zlog_debug_verbose( | |
735 | "%s: import table not defined, returning", __func__); | |
736 | return; | |
737 | } | |
738 | ||
739 | if (afi == AFI_IP || afi == AFI_IP6) { | |
740 | rt = import_table->imported_vpn[afi]; | |
741 | } else { | |
450971aa | 742 | flog_err(EC_LIB_DEVELOPMENT, "%s: bad afi %d", __func__, afi); |
d62a17ae | 743 | return; |
744 | } | |
745 | ||
746 | if (!family) { | |
450971aa | 747 | flog_err(EC_LIB_DEVELOPMENT, "%s: computed bad family: %d", |
1c50c1c0 | 748 | __func__, family); |
d62a17ae | 749 | return; |
750 | } | |
751 | ||
752 | if (!rfg->nves) { | |
753 | /* avoid segfault below if list doesn't exist */ | |
754 | vnc_zlog_debug_verbose("%s: no NVEs in this group", __func__); | |
755 | return; | |
756 | } | |
757 | ||
758 | nve_group_to_nve_list(rfg, &nves, family); | |
759 | if (nves) { | |
760 | vnc_zlog_debug_verbose("%s: have nves", __func__); | |
761 | nve_list_to_nh_array(family, nves, &nexthop_count, &nh_ary, | |
762 | &nhp_ary); | |
763 | ||
764 | vnc_zlog_debug_verbose("%s: family: %d, nve count: %d", | |
765 | __func__, family, nexthop_count); | |
766 | ||
6a154c88 | 767 | list_delete(&nves); |
d62a17ae | 768 | |
769 | if (nexthop_count) { | |
770 | /* | |
771 | * Walk the NVE-Group's VNC Import table | |
772 | */ | |
fe08ba7e DS |
773 | for (rn = agg_route_top(rt); rn; |
774 | rn = agg_route_next(rn)) { | |
d62a17ae | 775 | if (rn->info) { |
26a3ffd6 DS |
776 | vnc_zebra_route_msg( |
777 | agg_node_get_prefix(rn), | |
778 | nexthop_count, nhp_ary, add); | |
d62a17ae | 779 | } |
780 | } | |
781 | } | |
0a22ddfb QY |
782 | XFREE(MTYPE_TMP, nhp_ary); |
783 | XFREE(MTYPE_TMP, nh_ary); | |
d62a17ae | 784 | } |
65efcfce LB |
785 | } |
786 | ||
d62a17ae | 787 | void vnc_zebra_add_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 788 | { |
d62a17ae | 789 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 1); |
790 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 1); | |
65efcfce LB |
791 | } |
792 | ||
d62a17ae | 793 | void vnc_zebra_del_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 794 | { |
d62a17ae | 795 | vnc_zlog_debug_verbose("%s: entry", __func__); |
796 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 0); | |
797 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 0); | |
65efcfce LB |
798 | } |
799 | ||
d62a17ae | 800 | void vnc_zebra_reexport_group_afi(struct bgp *bgp, |
801 | struct rfapi_nve_group_cfg *rfg, afi_t afi) | |
65efcfce | 802 | { |
d62a17ae | 803 | struct listnode *node; |
804 | struct rfapi_rfg_name *rfgn; | |
805 | ||
806 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
807 | rfgn)) { | |
808 | ||
809 | if (rfgn->rfg == rfg) { | |
810 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 0); | |
811 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 1); | |
812 | break; | |
813 | } | |
814 | } | |
65efcfce LB |
815 | } |
816 | ||
817 | ||
818 | /*********************************************************************** | |
819 | * CONTROL INTERFACE | |
820 | ***********************************************************************/ | |
821 | ||
822 | ||
823 | /* Other routes redistribution into BGP. */ | |
d62a17ae | 824 | int vnc_redistribute_set(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 825 | { |
d62a17ae | 826 | if (!bgp->rfapi_cfg) { |
827 | return CMD_WARNING_CONFIG_FAILED; | |
828 | } | |
65efcfce | 829 | |
d62a17ae | 830 | /* Set flag to BGP instance. */ |
831 | bgp->rfapi_cfg->redist[afi][type] = 1; | |
65efcfce | 832 | |
d62a17ae | 833 | // bgp->redist[afi][type] = 1; |
65efcfce | 834 | |
d62a17ae | 835 | /* Return if already redistribute flag is set. */ |
9f2337c9 | 836 | if (vrf_bitmap_check(zclient_vnc->redist[afi][type], VRF_DEFAULT)) |
d62a17ae | 837 | return CMD_WARNING_CONFIG_FAILED; |
65efcfce | 838 | |
d62a17ae | 839 | vrf_bitmap_set(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
65efcfce | 840 | |
9f2337c9 | 841 | // vrf_bitmap_set(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
65efcfce | 842 | |
d62a17ae | 843 | /* Return if zebra connection is not established. */ |
844 | if (zclient_vnc->sock < 0) | |
845 | return CMD_WARNING_CONFIG_FAILED; | |
65efcfce | 846 | |
d62a17ae | 847 | if (BGP_DEBUG(zebra, ZEBRA)) |
848 | vnc_zlog_debug_verbose("Zebra send: redistribute add %s", | |
849 | zebra_route_string(type)); | |
65efcfce | 850 | |
d62a17ae | 851 | /* Send distribute add message to zebra. */ |
852 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient_vnc, afi, type, | |
853 | 0, VRF_DEFAULT); | |
65efcfce | 854 | |
d62a17ae | 855 | return CMD_SUCCESS; |
65efcfce LB |
856 | } |
857 | ||
858 | /* Unset redistribution. */ | |
d62a17ae | 859 | int vnc_redistribute_unset(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 860 | { |
d62a17ae | 861 | vnc_zlog_debug_verbose("%s: type=%d entry", __func__, type); |
862 | ||
863 | if (!bgp->rfapi_cfg) { | |
864 | vnc_zlog_debug_verbose("%s: return (no rfapi_cfg)", __func__); | |
865 | return CMD_WARNING_CONFIG_FAILED; | |
866 | } | |
867 | ||
868 | /* Unset flag from BGP instance. */ | |
869 | bgp->rfapi_cfg->redist[afi][type] = 0; | |
870 | ||
871 | /* Return if zebra connection is disabled. */ | |
9f2337c9 | 872 | if (!vrf_bitmap_check(zclient_vnc->redist[afi][type], VRF_DEFAULT)) |
d62a17ae | 873 | return CMD_WARNING_CONFIG_FAILED; |
9f2337c9 | 874 | vrf_bitmap_unset(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
d62a17ae | 875 | |
876 | if (bgp->rfapi_cfg->redist[AFI_IP][type] == 0 | |
877 | && bgp->rfapi_cfg->redist[AFI_IP6][type] == 0 | |
878 | && zclient_vnc->sock >= 0) { | |
879 | /* Send distribute delete message to zebra. */ | |
880 | if (BGP_DEBUG(zebra, ZEBRA)) | |
881 | vnc_zlog_debug_verbose( | |
882 | "Zebra send: redistribute delete %s", | |
883 | zebra_route_string(type)); | |
884 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient_vnc, | |
885 | afi, type, 0, VRF_DEFAULT); | |
886 | } | |
887 | ||
888 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
889 | vnc_redistribute_withdraw(bgp, afi, type); | |
890 | ||
891 | vnc_zlog_debug_verbose("%s: return", __func__); | |
892 | ||
893 | return CMD_SUCCESS; | |
65efcfce LB |
894 | } |
895 | ||
342213ea | 896 | extern struct zebra_privs_t bgpd_privs; |
65efcfce | 897 | |
a243d1db DL |
898 | static zclient_handler *const vnc_handlers[] = { |
899 | [ZEBRA_REDISTRIBUTE_ROUTE_ADD] = vnc_zebra_read_route, | |
900 | [ZEBRA_REDISTRIBUTE_ROUTE_DEL] = vnc_zebra_read_route, | |
901 | }; | |
902 | ||
65efcfce LB |
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. */ |
a243d1db DL |
910 | zclient_vnc = zclient_new(master, &zclient_options_default, |
911 | vnc_handlers, array_size(vnc_handlers)); | |
342213ea | 912 | zclient_init(zclient_vnc, ZEBRA_ROUTE_VNC, 0, &bgpd_privs); |
65efcfce LB |
913 | } |
914 | ||
d62a17ae | 915 | void vnc_zebra_destroy(void) |
65efcfce | 916 | { |
d62a17ae | 917 | if (zclient_vnc == NULL) |
918 | return; | |
919 | zclient_stop(zclient_vnc); | |
920 | zclient_free(zclient_vnc); | |
921 | zclient_vnc = NULL; | |
65efcfce | 922 | } |