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718e3744 | 1 | /* Routing Information Base. |
2 | * Copyright (C) 1997, 98, 99, 2001 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * 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 | |
718e3744 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
718e3744 | 23 | #include "command.h" |
43e52561 QY |
24 | #include "if.h" |
25 | #include "linklist.h" | |
718e3744 | 26 | #include "log.h" |
43e52561 QY |
27 | #include "memory.h" |
28 | #include "mpls.h" | |
29 | #include "nexthop.h" | |
30 | #include "prefix.h" | |
7514fb77 PJ |
31 | #include "prefix.h" |
32 | #include "routemap.h" | |
43e52561 | 33 | #include "sockunion.h" |
05737783 | 34 | #include "srcdest_table.h" |
43e52561 QY |
35 | #include "table.h" |
36 | #include "thread.h" | |
37 | #include "vrf.h" | |
38 | #include "workqueue.h" | |
50d89650 | 39 | #include "nexthop_group_private.h" |
00dffa8c | 40 | #include "frr_pthread.h" |
61e6de9d | 41 | #include "printfrr.h" |
718e3744 | 42 | |
89272910 | 43 | #include "zebra/zebra_router.h" |
43e52561 QY |
44 | #include "zebra/connected.h" |
45 | #include "zebra/debug.h" | |
46 | #include "zebra/interface.h" | |
47 | #include "zebra/redistribute.h" | |
718e3744 | 48 | #include "zebra/rib.h" |
49 | #include "zebra/rt.h" | |
43e52561 QY |
50 | #include "zebra/zapi_msg.h" |
51 | #include "zebra/zebra_errors.h" | |
7c551956 | 52 | #include "zebra/zebra_ns.h" |
fb018d25 | 53 | #include "zebra/zebra_rnh.h" |
43e52561 QY |
54 | #include "zebra/zebra_routemap.h" |
55 | #include "zebra/zebra_vrf.h" | |
6134fd82 | 56 | #include "zebra/zebra_vxlan.h" |
7cdb1a84 MS |
57 | #include "zebra/zapi_msg.h" |
58 | #include "zebra/zebra_dplane.h" | |
32367e7a | 59 | #include "zebra/zebra_evpn_mh.h" |
7cdb1a84 | 60 | |
224ccf29 DL |
61 | DEFINE_MGROUP(ZEBRA, "zebra"); |
62 | ||
63 | DEFINE_MTYPE(ZEBRA, RE, "Route Entry"); | |
64 | DEFINE_MTYPE_STATIC(ZEBRA, RIB_DEST, "RIB destination"); | |
2a99ab95 | 65 | DEFINE_MTYPE_STATIC(ZEBRA, RIB_UPDATE_CTX, "Rib update context object"); |
32367e7a | 66 | DEFINE_MTYPE_STATIC(ZEBRA, WQ_WRAPPER, "WQ wrapper"); |
2a99ab95 | 67 | |
7cdb1a84 MS |
68 | /* |
69 | * Event, list, and mutex for delivery of dataplane results | |
70 | */ | |
71 | static pthread_mutex_t dplane_mutex; | |
72 | static struct thread *t_dplane; | |
25779064 | 73 | static struct dplane_ctx_q rib_dplane_q; |
718e3744 | 74 | |
d62a17ae | 75 | DEFINE_HOOK(rib_update, (struct route_node * rn, const char *reason), |
8451921b | 76 | (rn, reason)); |
4f8ea50c | 77 | |
32367e7a | 78 | /* Should we allow non FRR processes to delete our routes */ |
6baf7bb8 DS |
79 | extern int allow_delete; |
80 | ||
718e3744 | 81 | /* Each route type's string and default distance value. */ |
d62a17ae | 82 | static const struct { |
83 | int key; | |
8dc7a759 | 84 | uint8_t distance; |
73547a75 | 85 | uint8_t meta_q_map; |
d62a17ae | 86 | } route_info[ZEBRA_ROUTE_MAX] = { |
32367e7a MS |
87 | [ZEBRA_ROUTE_NHG] = {ZEBRA_ROUTE_NHG, 255 /* Unneeded for nhg's */, 0}, |
88 | [ZEBRA_ROUTE_SYSTEM] = {ZEBRA_ROUTE_SYSTEM, 0, 7}, | |
89 | [ZEBRA_ROUTE_KERNEL] = {ZEBRA_ROUTE_KERNEL, 0, 3}, | |
90 | [ZEBRA_ROUTE_CONNECT] = {ZEBRA_ROUTE_CONNECT, 0, 2}, | |
91 | [ZEBRA_ROUTE_STATIC] = {ZEBRA_ROUTE_STATIC, 1, 4}, | |
92 | [ZEBRA_ROUTE_RIP] = {ZEBRA_ROUTE_RIP, 120, 5}, | |
93 | [ZEBRA_ROUTE_RIPNG] = {ZEBRA_ROUTE_RIPNG, 120, 5}, | |
94 | [ZEBRA_ROUTE_OSPF] = {ZEBRA_ROUTE_OSPF, 110, 5}, | |
95 | [ZEBRA_ROUTE_OSPF6] = {ZEBRA_ROUTE_OSPF6, 110, 5}, | |
96 | [ZEBRA_ROUTE_ISIS] = {ZEBRA_ROUTE_ISIS, 115, 5}, | |
97 | [ZEBRA_ROUTE_BGP] = {ZEBRA_ROUTE_BGP, 20 /* IBGP is 200. */, 6}, | |
98 | [ZEBRA_ROUTE_PIM] = {ZEBRA_ROUTE_PIM, 255, 7}, | |
99 | [ZEBRA_ROUTE_EIGRP] = {ZEBRA_ROUTE_EIGRP, 90, 5}, | |
100 | [ZEBRA_ROUTE_NHRP] = {ZEBRA_ROUTE_NHRP, 10, 5}, | |
101 | [ZEBRA_ROUTE_HSLS] = {ZEBRA_ROUTE_HSLS, 255, 7}, | |
102 | [ZEBRA_ROUTE_OLSR] = {ZEBRA_ROUTE_OLSR, 255, 7}, | |
103 | [ZEBRA_ROUTE_TABLE] = {ZEBRA_ROUTE_TABLE, 150, 4}, | |
104 | [ZEBRA_ROUTE_LDP] = {ZEBRA_ROUTE_LDP, 150, 7}, | |
105 | [ZEBRA_ROUTE_VNC] = {ZEBRA_ROUTE_VNC, 20, 6}, | |
106 | [ZEBRA_ROUTE_VNC_DIRECT] = {ZEBRA_ROUTE_VNC_DIRECT, 20, 6}, | |
107 | [ZEBRA_ROUTE_VNC_DIRECT_RH] = {ZEBRA_ROUTE_VNC_DIRECT_RH, 20, 6}, | |
108 | [ZEBRA_ROUTE_BGP_DIRECT] = {ZEBRA_ROUTE_BGP_DIRECT, 20, 6}, | |
109 | [ZEBRA_ROUTE_BGP_DIRECT_EXT] = {ZEBRA_ROUTE_BGP_DIRECT_EXT, 20, 6}, | |
110 | [ZEBRA_ROUTE_BABEL] = {ZEBRA_ROUTE_BABEL, 100, 5}, | |
111 | [ZEBRA_ROUTE_SHARP] = {ZEBRA_ROUTE_SHARP, 150, 7}, | |
112 | [ZEBRA_ROUTE_PBR] = {ZEBRA_ROUTE_PBR, 200, 7}, | |
113 | [ZEBRA_ROUTE_BFD] = {ZEBRA_ROUTE_BFD, 255, 7}, | |
114 | [ZEBRA_ROUTE_OPENFABRIC] = {ZEBRA_ROUTE_OPENFABRIC, 115, 5}, | |
115 | [ZEBRA_ROUTE_VRRP] = {ZEBRA_ROUTE_VRRP, 255, 7}, | |
116 | [ZEBRA_ROUTE_SRTE] = {ZEBRA_ROUTE_SRTE, 255, 7}, | |
d6abd8b0 | 117 | /* Any new route type added to zebra, should be mirrored here */ |
c710b277 | 118 | |
d62a17ae | 119 | /* no entry/default: 150 */ |
718e3744 | 120 | }; |
6b0655a2 | 121 | |
32367e7a MS |
122 | /* EVPN/VXLAN subqueue is number 1 */ |
123 | #define META_QUEUE_EVPN 1 | |
124 | ||
04bec7b2 MS |
125 | /* Wrapper struct for nhg workqueue items; a 'ctx' is an incoming update |
126 | * from the OS, and an 'nhe' is a nhe update. | |
127 | */ | |
128 | struct wq_nhg_wrapper { | |
129 | int type; | |
130 | union { | |
131 | struct nhg_ctx *ctx; | |
132 | struct nhg_hash_entry *nhe; | |
133 | } u; | |
134 | }; | |
135 | ||
136 | #define WQ_NHG_WRAPPER_TYPE_CTX 0x01 | |
137 | #define WQ_NHG_WRAPPER_TYPE_NHG 0x02 | |
138 | ||
32367e7a MS |
139 | /* Wrapper structs for evpn/vxlan workqueue items. */ |
140 | struct wq_evpn_wrapper { | |
141 | int type; | |
142 | bool add_p; | |
143 | vrf_id_t vrf_id; | |
144 | bool esr_rxed; | |
145 | uint8_t df_alg; | |
146 | uint16_t df_pref; | |
7f7e49d1 MS |
147 | uint32_t flags; |
148 | uint32_t seq; | |
32367e7a | 149 | esi_t esi; |
7f7e49d1 | 150 | vni_t vni; |
32367e7a | 151 | struct ipaddr ip; |
7f7e49d1 | 152 | struct ethaddr macaddr; |
32367e7a | 153 | struct prefix prefix; |
7f7e49d1 | 154 | struct in_addr vtep_ip; |
32367e7a MS |
155 | }; |
156 | ||
7f7e49d1 MS |
157 | #define WQ_EVPN_WRAPPER_TYPE_VRFROUTE 0x01 |
158 | #define WQ_EVPN_WRAPPER_TYPE_REM_ES 0x02 | |
159 | #define WQ_EVPN_WRAPPER_TYPE_REM_MACIP 0x03 | |
7e5b0b2b | 160 | #define WQ_EVPN_WRAPPER_TYPE_REM_VTEP 0x04 |
32367e7a | 161 | |
9d75e309 DL |
162 | /* %pRN is already a printer for route_nodes that just prints the prefix */ |
163 | #ifdef _FRR_ATTRIBUTE_PRINTFRR | |
164 | #pragma FRR printfrr_ext "%pZN" (struct route_node *) | |
165 | #endif | |
166 | ||
167 | printfrr_ext_autoreg_p("ZN", printfrr_zebra_node); | |
168 | static ssize_t printfrr_zebra_node(struct fbuf *buf, struct printfrr_eargs *ea, | |
169 | const void *ptr) | |
2263a412 | 170 | { |
9d75e309 DL |
171 | struct route_node *rn = (struct route_node *)ptr; |
172 | ssize_t rv = 0; | |
173 | ||
174 | /* just the table number? */ | |
175 | if (ea->fmt[0] == 't') { | |
176 | rib_dest_t *dest; | |
c2c02b76 DS |
177 | struct route_entry *re = NULL; |
178 | ||
9d75e309 | 179 | ea->fmt++; |
cb653491 | 180 | |
9d75e309 DL |
181 | if (!rn) |
182 | return bputch(buf, '!'); | |
c2c02b76 DS |
183 | |
184 | dest = rib_dest_from_rnode(rn); | |
185 | if (dest) | |
186 | re = re_list_first(&dest->routes); | |
187 | if (re) | |
9d75e309 DL |
188 | rv += bprintfrr(buf, "%u", re->table); |
189 | else | |
190 | rv += bputch(buf, '?'); | |
191 | ||
d62a17ae | 192 | } else { |
9d75e309 DL |
193 | char cbuf[PREFIX_STRLEN * 2 + 6]; |
194 | struct rib_table_info *info; | |
195 | ||
196 | if (!rn) | |
197 | return bputs(buf, "{(route_node *) NULL}"); | |
2263a412 | 198 | |
9d75e309 DL |
199 | srcdest_rnode2str(rn, cbuf, sizeof(cbuf)); |
200 | rv += bputs(buf, cbuf); | |
201 | ||
202 | info = srcdest_rnode_table_info(rn); | |
203 | if (info->safi == SAFI_MULTICAST) | |
204 | rv += bputs(buf, " (MRIB)"); | |
205 | } | |
206 | return rv; | |
2263a412 DL |
207 | } |
208 | ||
9d75e309 DL |
209 | #define rnode_debug(node, vrf_id, msg, ...) \ |
210 | zlog_debug("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
211 | ##__VA_ARGS__) | |
212 | ||
213 | #define rnode_info(node, vrf_id, msg, ...) \ | |
214 | zlog_info("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
215 | ##__VA_ARGS__) | |
216 | ||
61e6de9d DS |
217 | static char *_dump_re_status(const struct route_entry *re, char *buf, |
218 | size_t len) | |
219 | { | |
220 | if (re->status == 0) { | |
221 | snprintfrr(buf, len, "None "); | |
222 | return buf; | |
223 | } | |
224 | ||
225 | snprintfrr( | |
226 | buf, len, "%s%s%s%s%s%s%s", | |
227 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED) ? "Removed " : "", | |
228 | CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED) ? "Changed " : "", | |
229 | CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED) | |
230 | ? "Label Changed " | |
231 | : "", | |
232 | CHECK_FLAG(re->status, ROUTE_ENTRY_QUEUED) ? "Queued " : "", | |
233 | CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) ? "Installed " | |
234 | : "", | |
235 | CHECK_FLAG(re->status, ROUTE_ENTRY_FAILED) ? "Failed " : "", | |
236 | CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG) ? "Fib NHG " | |
237 | : ""); | |
238 | return buf; | |
239 | } | |
240 | ||
fd289fc8 | 241 | uint8_t route_distance(int type) |
40c7bdb0 | 242 | { |
fd289fc8 | 243 | uint8_t distance; |
40c7bdb0 | 244 | |
d62a17ae | 245 | if ((unsigned)type >= array_size(route_info)) |
246 | distance = 150; | |
247 | else | |
248 | distance = route_info[type].distance; | |
40c7bdb0 | 249 | |
d62a17ae | 250 | return distance; |
40c7bdb0 | 251 | } |
252 | ||
d7c0a89a | 253 | int is_zebra_valid_kernel_table(uint32_t table_id) |
7a4bb9c5 | 254 | { |
8f500a1c | 255 | #ifdef linux |
d62a17ae | 256 | if ((table_id == RT_TABLE_UNSPEC) || (table_id == RT_TABLE_LOCAL) |
257 | || (table_id == RT_TABLE_COMPAT)) | |
258 | return 0; | |
8f500a1c RW |
259 | #endif |
260 | ||
d62a17ae | 261 | return 1; |
7a4bb9c5 DS |
262 | } |
263 | ||
d7c0a89a | 264 | int is_zebra_main_routing_table(uint32_t table_id) |
7a4bb9c5 | 265 | { |
c447ad08 | 266 | if (table_id == RT_TABLE_MAIN) |
d62a17ae | 267 | return 1; |
268 | return 0; | |
7a4bb9c5 DS |
269 | } |
270 | ||
86391e56 | 271 | int zebra_check_addr(const struct prefix *p) |
0aabccc0 | 272 | { |
d62a17ae | 273 | if (p->family == AF_INET) { |
d7c0a89a | 274 | uint32_t addr; |
0aabccc0 | 275 | |
d62a17ae | 276 | addr = p->u.prefix4.s_addr; |
277 | addr = ntohl(addr); | |
0aabccc0 | 278 | |
d62a17ae | 279 | if (IPV4_NET127(addr) || IN_CLASSD(addr) |
280 | || IPV4_LINKLOCAL(addr)) | |
281 | return 0; | |
282 | } | |
283 | if (p->family == AF_INET6) { | |
284 | if (IN6_IS_ADDR_LOOPBACK(&p->u.prefix6)) | |
285 | return 0; | |
286 | if (IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
287 | return 0; | |
288 | } | |
289 | return 1; | |
0aabccc0 DD |
290 | } |
291 | ||
6e26278c DS |
292 | /** |
293 | * copy_nexthop - copy a nexthop to the rib structure. | |
294 | */ | |
d62a17ae | 295 | void route_entry_copy_nexthops(struct route_entry *re, struct nexthop *nh) |
6e26278c | 296 | { |
c415d895 MS |
297 | assert(!re->nhe->nhg.nexthop); |
298 | copy_nexthops(&re->nhe->nhg.nexthop, nh, NULL); | |
718e3744 | 299 | } |
300 | ||
5463ce26 MS |
301 | static void route_entry_attach_ref(struct route_entry *re, |
302 | struct nhg_hash_entry *new) | |
718e3744 | 303 | { |
0eb97b86 | 304 | re->nhe = new; |
5463ce26 | 305 | re->nhe_id = new->id; |
718e3744 | 306 | |
5463ce26 | 307 | zebra_nhg_increment_ref(new); |
718e3744 | 308 | } |
309 | ||
cd7108ba EDP |
310 | int route_entry_update_nhe(struct route_entry *re, |
311 | struct nhg_hash_entry *new_nhghe) | |
718e3744 | 312 | { |
377e29f7 | 313 | struct nhg_hash_entry *old; |
5463ce26 | 314 | int ret = 0; |
718e3744 | 315 | |
cd7108ba | 316 | if (new_nhghe == NULL) { |
c415d895 MS |
317 | if (re->nhe) |
318 | zebra_nhg_decrement_ref(re->nhe); | |
319 | re->nhe = NULL; | |
5463ce26 MS |
320 | goto done; |
321 | } | |
718e3744 | 322 | |
1f655680 | 323 | if ((re->nhe_id != 0) && re->nhe && (re->nhe != new_nhghe)) { |
c415d895 | 324 | old = re->nhe; |
718e3744 | 325 | |
cd7108ba | 326 | route_entry_attach_ref(re, new_nhghe); |
718e3744 | 327 | |
5463ce26 MS |
328 | if (old) |
329 | zebra_nhg_decrement_ref(old); | |
84a89a8d | 330 | } else if (!re->nhe) |
5463ce26 | 331 | /* This is the first time it's being attached */ |
cd7108ba | 332 | route_entry_attach_ref(re, new_nhghe); |
595db7f1 | 333 | |
5463ce26 MS |
334 | done: |
335 | return ret; | |
595db7f1 | 336 | } |
337 | ||
2e8db20d EDP |
338 | void rib_handle_nhg_replace(struct nhg_hash_entry *old_entry, |
339 | struct nhg_hash_entry *new_entry) | |
1f655680 SW |
340 | { |
341 | struct zebra_router_table *zrt; | |
342 | struct route_node *rn; | |
343 | struct route_entry *re, *next; | |
344 | ||
345 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || IS_ZEBRA_DEBUG_NHG_DETAIL) | |
346 | zlog_debug("%s: replacing routes nhe (%u) OLD %p NEW %p", | |
2e8db20d | 347 | __func__, new_entry->id, new_entry, old_entry); |
1f655680 SW |
348 | |
349 | /* We have to do them ALL */ | |
350 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) { | |
351 | for (rn = route_top(zrt->table); rn; | |
352 | rn = srcdest_route_next(rn)) { | |
353 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
2e8db20d EDP |
354 | if (re->nhe && re->nhe == old_entry) |
355 | route_entry_update_nhe(re, new_entry); | |
1f655680 SW |
356 | } |
357 | } | |
358 | } | |
359 | } | |
360 | ||
d62a17ae | 361 | struct route_entry *rib_match(afi_t afi, safi_t safi, vrf_id_t vrf_id, |
bc77c3bb MS |
362 | const union g_addr *addr, |
363 | struct route_node **rn_out) | |
d62a17ae | 364 | { |
365 | struct prefix p; | |
366 | struct route_table *table; | |
367 | struct route_node *rn; | |
5f7a4718 | 368 | struct route_entry *match = NULL; |
d62a17ae | 369 | |
370 | /* Lookup table. */ | |
371 | table = zebra_vrf_table(afi, safi, vrf_id); | |
372 | if (!table) | |
373 | return 0; | |
374 | ||
375 | memset(&p, 0, sizeof(struct prefix)); | |
376 | p.family = afi; | |
377 | if (afi == AFI_IP) { | |
378 | p.u.prefix4 = addr->ipv4; | |
936fbaef | 379 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 380 | } else { |
381 | p.u.prefix6 = addr->ipv6; | |
f4d81e55 | 382 | p.prefixlen = IPV6_MAX_BITLEN; |
d62a17ae | 383 | } |
718e3744 | 384 | |
c4efd0f4 | 385 | rn = route_node_match(table, &p); |
718e3744 | 386 | |
d62a17ae | 387 | while (rn) { |
5f7a4718 DS |
388 | rib_dest_t *dest; |
389 | ||
d62a17ae | 390 | route_unlock_node(rn); |
718e3744 | 391 | |
5f7a4718 | 392 | dest = rib_dest_from_rnode(rn); |
996c9314 LB |
393 | if (dest && dest->selected_fib |
394 | && !CHECK_FLAG(dest->selected_fib->status, | |
395 | ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 396 | match = dest->selected_fib; |
718e3744 | 397 | |
d62a17ae | 398 | /* If there is no selected route or matched route is EGP, go up |
399 | tree. */ | |
400 | if (!match) { | |
401 | do { | |
402 | rn = rn->parent; | |
403 | } while (rn && rn->info == NULL); | |
404 | if (rn) | |
405 | route_lock_node(rn); | |
406 | } else { | |
407 | if (match->type != ZEBRA_ROUTE_CONNECT) { | |
677c1dd5 DS |
408 | if (!CHECK_FLAG(match->status, |
409 | ROUTE_ENTRY_INSTALLED)) | |
d62a17ae | 410 | return NULL; |
411 | } | |
412 | ||
413 | if (rn_out) | |
414 | *rn_out = rn; | |
415 | return match; | |
416 | } | |
16814f96 | 417 | } |
d62a17ae | 418 | return NULL; |
419 | } | |
420 | ||
421 | struct route_entry *rib_match_ipv4_multicast(vrf_id_t vrf_id, | |
422 | struct in_addr addr, | |
423 | struct route_node **rn_out) | |
424 | { | |
425 | struct route_entry *re = NULL, *mre = NULL, *ure = NULL; | |
426 | struct route_node *m_rn = NULL, *u_rn = NULL; | |
427 | union g_addr gaddr = {.ipv4 = addr}; | |
428 | ||
526052fb | 429 | switch (zrouter.ipv4_multicast_mode) { |
d62a17ae | 430 | case MCAST_MRIB_ONLY: |
431 | return rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, | |
432 | rn_out); | |
433 | case MCAST_URIB_ONLY: | |
434 | return rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, rn_out); | |
435 | case MCAST_NO_CONFIG: | |
436 | case MCAST_MIX_MRIB_FIRST: | |
437 | re = mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, | |
438 | &m_rn); | |
439 | if (!mre) | |
440 | re = ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, | |
441 | &gaddr, &u_rn); | |
442 | break; | |
443 | case MCAST_MIX_DISTANCE: | |
444 | mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
445 | ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
446 | if (mre && ure) | |
447 | re = ure->distance < mre->distance ? ure : mre; | |
448 | else if (mre) | |
449 | re = mre; | |
450 | else if (ure) | |
451 | re = ure; | |
452 | break; | |
453 | case MCAST_MIX_PFXLEN: | |
454 | mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
455 | ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
456 | if (mre && ure) | |
457 | re = u_rn->p.prefixlen > m_rn->p.prefixlen ? ure : mre; | |
458 | else if (mre) | |
459 | re = mre; | |
460 | else if (ure) | |
461 | re = ure; | |
462 | break; | |
718e3744 | 463 | } |
33550aa8 | 464 | |
d62a17ae | 465 | if (rn_out) |
466 | *rn_out = (re == mre) ? m_rn : u_rn; | |
718e3744 | 467 | |
d62a17ae | 468 | if (IS_ZEBRA_DEBUG_RIB) { |
469 | char buf[BUFSIZ]; | |
470 | inet_ntop(AF_INET, &addr, buf, BUFSIZ); | |
4623d897 | 471 | |
bd47f3a3 JU |
472 | zlog_debug("%s: %s: vrf: %s(%u) found %s, using %s", __func__, |
473 | buf, vrf_id_to_name(vrf_id), vrf_id, | |
d62a17ae | 474 | mre ? (ure ? "MRIB+URIB" : "MRIB") |
475 | : ure ? "URIB" : "nothing", | |
476 | re == ure ? "URIB" : re == mre ? "MRIB" : "none"); | |
477 | } | |
478 | return re; | |
4623d897 DL |
479 | } |
480 | ||
d62a17ae | 481 | struct route_entry *rib_lookup_ipv4(struct prefix_ipv4 *p, vrf_id_t vrf_id) |
718e3744 | 482 | { |
d62a17ae | 483 | struct route_table *table; |
484 | struct route_node *rn; | |
5f7a4718 | 485 | struct route_entry *match = NULL; |
5f7a4718 | 486 | rib_dest_t *dest; |
718e3744 | 487 | |
d62a17ae | 488 | /* Lookup table. */ |
489 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
490 | if (!table) | |
491 | return 0; | |
718e3744 | 492 | |
d62a17ae | 493 | rn = route_node_lookup(table, (struct prefix *)p); |
718e3744 | 494 | |
d62a17ae | 495 | /* No route for this prefix. */ |
496 | if (!rn) | |
497 | return NULL; | |
718e3744 | 498 | |
d62a17ae | 499 | /* Unlock node. */ |
500 | route_unlock_node(rn); | |
5f7a4718 | 501 | dest = rib_dest_from_rnode(rn); |
718e3744 | 502 | |
996c9314 LB |
503 | if (dest && dest->selected_fib |
504 | && !CHECK_FLAG(dest->selected_fib->status, ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 505 | match = dest->selected_fib; |
718e3744 | 506 | |
d62a17ae | 507 | if (!match) |
508 | return NULL; | |
718e3744 | 509 | |
d62a17ae | 510 | if (match->type == ZEBRA_ROUTE_CONNECT) |
511 | return match; | |
f9e1b38e | 512 | |
677c1dd5 DS |
513 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_INSTALLED)) |
514 | return match; | |
718e3744 | 515 | |
d62a17ae | 516 | return NULL; |
718e3744 | 517 | } |
518 | ||
a64448ba DS |
519 | /* |
520 | * Is this RIB labeled-unicast? It must be of type BGP and all paths | |
521 | * (nexthops) must have a label. | |
522 | */ | |
d62a17ae | 523 | int zebra_rib_labeled_unicast(struct route_entry *re) |
a64448ba | 524 | { |
d62a17ae | 525 | struct nexthop *nexthop = NULL; |
a64448ba | 526 | |
d62a17ae | 527 | if (re->type != ZEBRA_ROUTE_BGP) |
528 | return 0; | |
a64448ba | 529 | |
c415d895 | 530 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 531 | if (!nexthop->nh_label || !nexthop->nh_label->num_labels) |
532 | return 0; | |
6b0655a2 | 533 | |
d62a17ae | 534 | return 1; |
a64448ba | 535 | } |
718e3744 | 536 | |
6ae24471 DS |
537 | /* Update flag indicates whether this is a "replace" or not. Currently, this |
538 | * is only used for IPv4. | |
539 | */ | |
0c555cc6 DS |
540 | void rib_install_kernel(struct route_node *rn, struct route_entry *re, |
541 | struct route_entry *old) | |
718e3744 | 542 | { |
d62a17ae | 543 | struct nexthop *nexthop; |
630d5962 | 544 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
d62a17ae | 545 | struct zebra_vrf *zvrf = vrf_info_lookup(re->vrf_id); |
97f5b441 MS |
546 | const struct prefix *p, *src_p; |
547 | enum zebra_dplane_result ret; | |
548 | ||
549 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
718e3744 | 550 | |
d62a17ae | 551 | srcdest_rnode_prefixes(rn, &p, &src_p); |
416ec78d | 552 | |
d62a17ae | 553 | if (info->safi != SAFI_UNICAST) { |
c415d895 | 554 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 555 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 556 | return; |
d62a17ae | 557 | } |
718e3744 | 558 | |
9ef49038 | 559 | |
8dfbc657 SW |
560 | /* |
561 | * Install the resolved nexthop object first. | |
562 | */ | |
c415d895 | 563 | zebra_nhg_install_kernel(re->nhe); |
8dfbc657 | 564 | |
2063a814 DS |
565 | /* |
566 | * If this is a replace to a new RE let the originator of the RE | |
567 | * know that they've lost | |
568 | */ | |
9a9f8926 | 569 | if (old && (old != re) && (old->type != re->type)) |
77b38a4a S |
570 | zsend_route_notify_owner(old, p, ZAPI_ROUTE_BETTER_ADMIN_WON, |
571 | info->afi, info->safi); | |
25b9cb0c | 572 | |
97f5b441 MS |
573 | /* Update fib selection */ |
574 | dest->selected_fib = re; | |
575 | ||
d62a17ae | 576 | /* |
577 | * Make sure we update the FPM any time we send new information to | |
578 | * the kernel. | |
579 | */ | |
580 | hook_call(rib_update, rn, "installing in kernel"); | |
97f5b441 MS |
581 | |
582 | /* Send add or update */ | |
8263d1d0 | 583 | if (old) |
97f5b441 | 584 | ret = dplane_route_update(rn, re, old); |
5709131c | 585 | else |
97f5b441 | 586 | ret = dplane_route_add(rn, re); |
97f5b441 MS |
587 | |
588 | switch (ret) { | |
ea1c14f6 | 589 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
60f98b23 | 590 | SET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
efe6c026 MS |
591 | |
592 | if (old) { | |
60f98b23 | 593 | SET_FLAG(old->status, ROUTE_ENTRY_QUEUED); |
efe6c026 MS |
594 | |
595 | /* Free old FIB nexthop group */ | |
7483dcbe | 596 | UNSET_FLAG(old->status, ROUTE_ENTRY_USE_FIB_NHG); |
efe6c026 MS |
597 | if (old->fib_ng.nexthop) { |
598 | nexthops_free(old->fib_ng.nexthop); | |
599 | old->fib_ng.nexthop = NULL; | |
600 | } | |
efe6c026 MS |
601 | } |
602 | ||
97f5b441 MS |
603 | if (zvrf) |
604 | zvrf->installs_queued++; | |
1e885672 | 605 | break; |
ea1c14f6 | 606 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 MS |
607 | { |
608 | char str[SRCDEST2STR_BUFFER]; | |
609 | ||
610 | srcdest_rnode2str(rn, str, sizeof(str)); | |
611 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, | |
b96f64f7 DS |
612 | "%u:%u:%s: Failed to enqueue dataplane install", |
613 | re->vrf_id, re->table, str); | |
1e885672 | 614 | break; |
97f5b441 | 615 | } |
ea1c14f6 | 616 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
97f5b441 MS |
617 | if (zvrf) |
618 | zvrf->installs++; | |
1e885672 DS |
619 | break; |
620 | } | |
d62a17ae | 621 | |
0c555cc6 | 622 | return; |
718e3744 | 623 | } |
624 | ||
625 | /* Uninstall the route from kernel. */ | |
0c555cc6 | 626 | void rib_uninstall_kernel(struct route_node *rn, struct route_entry *re) |
718e3744 | 627 | { |
d62a17ae | 628 | struct nexthop *nexthop; |
630d5962 | 629 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
d62a17ae | 630 | struct zebra_vrf *zvrf = vrf_info_lookup(re->vrf_id); |
05737783 | 631 | |
d62a17ae | 632 | if (info->safi != SAFI_UNICAST) { |
677c1dd5 | 633 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 634 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d6792f9d | 635 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 636 | return; |
d62a17ae | 637 | } |
416ec78d | 638 | |
d62a17ae | 639 | /* |
640 | * Make sure we update the FPM any time we send new information to | |
97f5b441 | 641 | * the dataplane. |
d62a17ae | 642 | */ |
643 | hook_call(rib_update, rn, "uninstalling from kernel"); | |
97f5b441 MS |
644 | |
645 | switch (dplane_route_delete(rn, re)) { | |
ea1c14f6 | 646 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
97f5b441 MS |
647 | if (zvrf) |
648 | zvrf->removals_queued++; | |
1e885672 | 649 | break; |
ea1c14f6 | 650 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 MS |
651 | { |
652 | char str[SRCDEST2STR_BUFFER]; | |
653 | ||
654 | srcdest_rnode2str(rn, str, sizeof(str)); | |
655 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, | |
656 | "%u:%s: Failed to enqueue dataplane uninstall", | |
657 | re->vrf_id, str); | |
1e885672 | 658 | break; |
97f5b441 | 659 | } |
ea1c14f6 | 660 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
1e885672 DS |
661 | if (zvrf) |
662 | zvrf->removals++; | |
663 | break; | |
664 | } | |
718e3744 | 665 | |
0c555cc6 | 666 | return; |
718e3744 | 667 | } |
668 | ||
669 | /* Uninstall the route from kernel. */ | |
d62a17ae | 670 | static void rib_uninstall(struct route_node *rn, struct route_entry *re) |
718e3744 | 671 | { |
630d5962 | 672 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
5f7a4718 | 673 | rib_dest_t *dest = rib_dest_from_rnode(rn); |
97f5b441 | 674 | struct nexthop *nexthop; |
416ec78d | 675 | |
5f7a4718 | 676 | if (dest && dest->selected_fib == re) { |
d62a17ae | 677 | if (info->safi == SAFI_UNICAST) |
678 | hook_call(rib_update, rn, "rib_uninstall"); | |
5adc2528 | 679 | |
d62a17ae | 680 | /* If labeled-unicast route, uninstall transit LSP. */ |
681 | if (zebra_rib_labeled_unicast(re)) | |
682 | zebra_mpls_lsp_uninstall(info->zvrf, rn, re); | |
7cdb1a84 | 683 | |
3cdba47a | 684 | rib_uninstall_kernel(rn, re); |
97f5b441 MS |
685 | |
686 | dest->selected_fib = NULL; | |
687 | ||
efe6c026 MS |
688 | /* Free FIB nexthop group, if present */ |
689 | if (re->fib_ng.nexthop) { | |
690 | nexthops_free(re->fib_ng.nexthop); | |
691 | re->fib_ng.nexthop = NULL; | |
692 | } | |
7483dcbe | 693 | UNSET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); |
efe6c026 | 694 | |
c415d895 | 695 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
97f5b441 | 696 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
d62a17ae | 697 | } |
446bb95e | 698 | |
d62a17ae | 699 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) { |
86391e56 MS |
700 | const struct prefix *p, *src_p; |
701 | ||
d62a17ae | 702 | srcdest_rnode_prefixes(rn, &p, &src_p); |
05737783 | 703 | |
40f321c0 | 704 | redistribute_delete(p, src_p, re, NULL); |
d62a17ae | 705 | UNSET_FLAG(re->flags, ZEBRA_FLAG_SELECTED); |
706 | } | |
718e3744 | 707 | } |
708 | ||
9fd92e3c AS |
709 | /* |
710 | * rib_can_delete_dest | |
711 | * | |
2951a7a4 | 712 | * Returns true if the given dest can be deleted from the table. |
9fd92e3c | 713 | */ |
d62a17ae | 714 | static int rib_can_delete_dest(rib_dest_t *dest) |
9fd92e3c | 715 | { |
045207e2 | 716 | if (re_list_first(&dest->routes)) { |
d62a17ae | 717 | return 0; |
718 | } | |
9fd92e3c | 719 | |
c86ba6c2 DS |
720 | /* |
721 | * Unresolved rnh's are stored on the default route's list | |
722 | * | |
723 | * dest->rnode can also be the source prefix node in an | |
724 | * ipv6 sourcedest table. Fortunately the prefix of a | |
725 | * source prefix node can never be the default prefix. | |
726 | */ | |
727 | if (is_default_prefix(&dest->rnode->p)) | |
728 | return 0; | |
729 | ||
d62a17ae | 730 | /* |
731 | * Don't delete the dest if we have to update the FPM about this | |
732 | * prefix. | |
733 | */ | |
734 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM) | |
735 | || CHECK_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM)) | |
736 | return 0; | |
5adc2528 | 737 | |
d62a17ae | 738 | return 1; |
9fd92e3c AS |
739 | } |
740 | ||
699dae23 DS |
741 | void zebra_rib_evaluate_rn_nexthops(struct route_node *rn, uint32_t seq) |
742 | { | |
743 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
699dae23 DS |
744 | struct rnh *rnh; |
745 | ||
746 | /* | |
50872b08 | 747 | * We are storing the rnh's associated withb |
699dae23 DS |
748 | * the tracked nexthop as a list of the rn's. |
749 | * Unresolved rnh's are placed at the top | |
750 | * of the tree list.( 0.0.0.0/0 for v4 and 0::0/0 for v6 ) | |
751 | * As such for each rn we need to walk up the tree | |
752 | * and see if any rnh's need to see if they | |
753 | * would match a more specific route | |
754 | */ | |
755 | while (rn) { | |
50872b08 DS |
756 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) { |
757 | char buf[PREFIX_STRLEN]; | |
758 | ||
15569c58 DA |
759 | zlog_debug( |
760 | "%s: %s Being examined for Nexthop Tracking Count: %zd", | |
761 | __func__, | |
762 | srcdest_rnode2str(rn, buf, sizeof(buf)), | |
763 | dest ? rnh_list_count(&dest->nht) : 0); | |
50872b08 | 764 | } |
699dae23 DS |
765 | if (!dest) { |
766 | rn = rn->parent; | |
767 | if (rn) | |
768 | dest = rib_dest_from_rnode(rn); | |
769 | continue; | |
770 | } | |
771 | /* | |
772 | * If we have any rnh's stored in the nht list | |
773 | * then we know that this route node was used for | |
774 | * nht resolution and as such we need to call the | |
775 | * nexthop tracking evaluation code | |
776 | */ | |
739c9c90 | 777 | frr_each_safe(rnh_list, &dest->nht, rnh) { |
699dae23 DS |
778 | struct zebra_vrf *zvrf = |
779 | zebra_vrf_lookup_by_id(rnh->vrf_id); | |
780 | struct prefix *p = &rnh->node->p; | |
781 | ||
50872b08 | 782 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) { |
699dae23 | 783 | char buf1[PREFIX_STRLEN]; |
699dae23 | 784 | |
bd47f3a3 | 785 | zlog_debug( |
2dbe669b | 786 | "%s(%u):%s has Nexthop(%pFX) Type: %s depending on it, evaluating %u:%u", |
bd47f3a3 JU |
787 | zvrf_name(zvrf), zvrf_id(zvrf), |
788 | srcdest_rnode2str(rn, buf1, | |
789 | sizeof(buf1)), | |
2dbe669b | 790 | p, rnh_type2str(rnh->type), seq, |
bd47f3a3 | 791 | rnh->seqno); |
699dae23 DS |
792 | } |
793 | ||
794 | /* | |
795 | * If we have evaluated this node on this pass | |
796 | * already, due to following the tree up | |
797 | * then we know that we can move onto the next | |
798 | * rnh to process. | |
799 | * | |
800 | * Additionally we call zebra_evaluate_rnh | |
801 | * when we gc the dest. In this case we know | |
802 | * that there must be no other re's where | |
803 | * we were originally as such we know that | |
804 | * that sequence number is ok to respect. | |
805 | */ | |
50872b08 DS |
806 | if (rnh->seqno == seq) { |
807 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) | |
808 | zlog_debug( | |
1d5453d6 | 809 | " Node processed and moved already"); |
699dae23 | 810 | continue; |
50872b08 | 811 | } |
699dae23 DS |
812 | |
813 | rnh->seqno = seq; | |
814 | zebra_evaluate_rnh(zvrf, family2afi(p->family), 0, | |
815 | rnh->type, p); | |
816 | } | |
817 | ||
818 | rn = rn->parent; | |
819 | if (rn) | |
820 | dest = rib_dest_from_rnode(rn); | |
821 | } | |
822 | } | |
823 | ||
9fd92e3c AS |
824 | /* |
825 | * rib_gc_dest | |
826 | * | |
827 | * Garbage collect the rib dest corresponding to the given route node | |
828 | * if appropriate. | |
829 | * | |
2951a7a4 | 830 | * Returns true if the dest was deleted, false otherwise. |
9fd92e3c | 831 | */ |
d62a17ae | 832 | int rib_gc_dest(struct route_node *rn) |
9fd92e3c | 833 | { |
d62a17ae | 834 | rib_dest_t *dest; |
9fd92e3c | 835 | |
d62a17ae | 836 | dest = rib_dest_from_rnode(rn); |
837 | if (!dest) | |
838 | return 0; | |
9fd92e3c | 839 | |
d62a17ae | 840 | if (!rib_can_delete_dest(dest)) |
841 | return 0; | |
9fd92e3c | 842 | |
c9abf558 DS |
843 | if (IS_ZEBRA_DEBUG_RIB) { |
844 | struct zebra_vrf *zvrf; | |
845 | ||
846 | zvrf = rib_dest_vrf(dest); | |
d62a17ae | 847 | rnode_debug(rn, zvrf_id(zvrf), "removing dest from table"); |
c9abf558 | 848 | } |
9fd92e3c | 849 | |
699dae23 DS |
850 | zebra_rib_evaluate_rn_nexthops(rn, zebra_router_get_next_sequence()); |
851 | ||
d62a17ae | 852 | dest->rnode = NULL; |
aa57abfb | 853 | rnh_list_fini(&dest->nht); |
d62a17ae | 854 | XFREE(MTYPE_RIB_DEST, dest); |
855 | rn->info = NULL; | |
9fd92e3c | 856 | |
d62a17ae | 857 | /* |
858 | * Release the one reference that we keep on the route node. | |
859 | */ | |
860 | route_unlock_node(rn); | |
861 | return 1; | |
9fd92e3c AS |
862 | } |
863 | ||
224ccf29 DL |
864 | void zebra_rtable_node_cleanup(struct route_table *table, |
865 | struct route_node *node) | |
866 | { | |
867 | struct route_entry *re, *next; | |
868 | ||
869 | RNODE_FOREACH_RE_SAFE (node, re, next) { | |
870 | rib_unlink(node, re); | |
871 | } | |
872 | ||
873 | if (node->info) { | |
874 | rib_dest_t *dest = node->info; | |
875 | ||
876 | rnh_list_fini(&dest->nht); | |
877 | XFREE(MTYPE_RIB_DEST, node->info); | |
878 | } | |
879 | } | |
880 | ||
d62a17ae | 881 | static void rib_process_add_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
882 | struct route_entry *new) | |
3e5c6e00 | 883 | { |
d62a17ae | 884 | hook_call(rib_update, rn, "new route selected"); |
3e5c6e00 | 885 | |
d62a17ae | 886 | /* Update real nexthop. This may actually determine if nexthop is active |
887 | * or not. */ | |
c415d895 | 888 | if (!nexthop_group_active_nexthop_num(&(new->nhe->nhg))) { |
d62a17ae | 889 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
890 | return; | |
891 | } | |
3e5c6e00 | 892 | |
d62a17ae | 893 | if (IS_ZEBRA_DEBUG_RIB) { |
894 | char buf[SRCDEST2STR_BUFFER]; | |
895 | srcdest_rnode2str(rn, buf, sizeof(buf)); | |
c2c02b76 DS |
896 | zlog_debug("%s(%u:%u):%s: Adding route rn %p, re %p (%s)", |
897 | zvrf_name(zvrf), zvrf_id(zvrf), new->table, buf, rn, | |
898 | new, zebra_route_string(new->type)); | |
d62a17ae | 899 | } |
3e5c6e00 | 900 | |
d62a17ae | 901 | /* If labeled-unicast route, install transit LSP. */ |
902 | if (zebra_rib_labeled_unicast(new)) | |
903 | zebra_mpls_lsp_install(zvrf, rn, new); | |
a64448ba | 904 | |
3cdba47a | 905 | rib_install_kernel(rn, new, NULL); |
3e5c6e00 | 906 | |
d62a17ae | 907 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 908 | } |
909 | ||
d62a17ae | 910 | static void rib_process_del_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
911 | struct route_entry *old) | |
3e5c6e00 | 912 | { |
d62a17ae | 913 | hook_call(rib_update, rn, "removing existing route"); |
3e5c6e00 | 914 | |
d62a17ae | 915 | /* Uninstall from kernel. */ |
916 | if (IS_ZEBRA_DEBUG_RIB) { | |
917 | char buf[SRCDEST2STR_BUFFER]; | |
918 | srcdest_rnode2str(rn, buf, sizeof(buf)); | |
c2c02b76 DS |
919 | zlog_debug("%s(%u:%u):%s: Deleting route rn %p, re %p (%s)", |
920 | zvrf_name(zvrf), zvrf_id(zvrf), old->table, buf, rn, | |
921 | old, zebra_route_string(old->type)); | |
d62a17ae | 922 | } |
3e5c6e00 | 923 | |
d62a17ae | 924 | /* If labeled-unicast route, uninstall transit LSP. */ |
925 | if (zebra_rib_labeled_unicast(old)) | |
926 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
927 | ||
3cdba47a | 928 | rib_uninstall_kernel(rn, old); |
d62a17ae | 929 | |
930 | /* Update nexthop for route, reset changed flag. */ | |
ef57f35f DL |
931 | /* Note: this code also handles the Linux case when an interface goes |
932 | * down, causing the kernel to delete routes without sending DELROUTE | |
933 | * notifications | |
934 | */ | |
6883bf8d | 935 | if (RIB_KERNEL_ROUTE(old)) |
212df1de PG |
936 | SET_FLAG(old->status, ROUTE_ENTRY_REMOVED); |
937 | else | |
938 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); | |
d62a17ae | 939 | } |
940 | ||
941 | static void rib_process_update_fib(struct zebra_vrf *zvrf, | |
942 | struct route_node *rn, | |
943 | struct route_entry *old, | |
944 | struct route_entry *new) | |
945 | { | |
d62a17ae | 946 | int nh_active = 0; |
d62a17ae | 947 | |
948 | /* | |
949 | * We have to install or update if a new route has been selected or | |
950 | * something has changed. | |
951 | */ | |
952 | if (new != old || CHECK_FLAG(new->status, ROUTE_ENTRY_CHANGED)) { | |
953 | hook_call(rib_update, rn, "updating existing route"); | |
954 | ||
955 | /* Update the nexthop; we could determine here that nexthop is | |
956 | * inactive. */ | |
c415d895 | 957 | if (nexthop_group_active_nexthop_num(&(new->nhe->nhg))) |
d62a17ae | 958 | nh_active = 1; |
959 | ||
960 | /* If nexthop is active, install the selected route, if | |
961 | * appropriate. If | |
962 | * the install succeeds, cleanup flags for prior route, if | |
963 | * different from | |
964 | * newly selected. | |
965 | */ | |
966 | if (nh_active) { | |
967 | if (IS_ZEBRA_DEBUG_RIB) { | |
968 | char buf[SRCDEST2STR_BUFFER]; | |
04bec7b2 | 969 | |
d62a17ae | 970 | srcdest_rnode2str(rn, buf, sizeof(buf)); |
971 | if (new != old) | |
972 | zlog_debug( | |
c2c02b76 | 973 | "%s(%u:%u):%s: Updating route rn %p, re %p (%s) old %p (%s)", |
bd47f3a3 | 974 | zvrf_name(zvrf), zvrf_id(zvrf), |
c2c02b76 | 975 | new->table, buf, rn, new, |
2da33d6b DS |
976 | zebra_route_string(new->type), |
977 | old, | |
978 | zebra_route_string(old->type)); | |
d62a17ae | 979 | else |
980 | zlog_debug( | |
c2c02b76 | 981 | "%s(%u:%u):%s: Updating route rn %p, re %p (%s)", |
bd47f3a3 | 982 | zvrf_name(zvrf), zvrf_id(zvrf), |
c2c02b76 | 983 | new->table, buf, rn, new, |
2da33d6b | 984 | zebra_route_string(new->type)); |
d62a17ae | 985 | } |
986 | ||
987 | /* If labeled-unicast route, uninstall transit LSP. */ | |
988 | if (zebra_rib_labeled_unicast(old)) | |
989 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
990 | ||
3cdba47a DS |
991 | /* |
992 | * Non-system route should be installed. | |
993 | * If labeled-unicast route, install transit | |
994 | * LSP. | |
995 | */ | |
996 | if (zebra_rib_labeled_unicast(new)) | |
997 | zebra_mpls_lsp_install(zvrf, rn, new); | |
d62a17ae | 998 | |
3cdba47a | 999 | rib_install_kernel(rn, new, old); |
d62a17ae | 1000 | } |
a64448ba | 1001 | |
d62a17ae | 1002 | /* |
1003 | * If nexthop for selected route is not active or install | |
1004 | * failed, we | |
1005 | * may need to uninstall and delete for redistribution. | |
1006 | */ | |
ed216282 | 1007 | if (!nh_active) { |
d62a17ae | 1008 | if (IS_ZEBRA_DEBUG_RIB) { |
1009 | char buf[SRCDEST2STR_BUFFER]; | |
1010 | srcdest_rnode2str(rn, buf, sizeof(buf)); | |
1011 | if (new != old) | |
1012 | zlog_debug( | |
c2c02b76 | 1013 | "%s(%u:%u):%s: Deleting route rn %p, re %p (%s) old %p (%s) - nexthop inactive", |
bd47f3a3 | 1014 | zvrf_name(zvrf), zvrf_id(zvrf), |
c2c02b76 | 1015 | new->table, buf, rn, new, |
2da33d6b DS |
1016 | zebra_route_string(new->type), |
1017 | old, | |
1018 | zebra_route_string(old->type)); | |
d62a17ae | 1019 | else |
1020 | zlog_debug( | |
c2c02b76 | 1021 | "%s(%u:%u):%s: Deleting route rn %p, re %p (%s) - nexthop inactive", |
bd47f3a3 | 1022 | zvrf_name(zvrf), zvrf_id(zvrf), |
c2c02b76 | 1023 | new->table, buf, rn, new, |
2da33d6b | 1024 | zebra_route_string(new->type)); |
d62a17ae | 1025 | } |
1026 | ||
5c18e662 DS |
1027 | /* |
1028 | * When we have gotten to this point | |
1029 | * the new route entry has no nexthops | |
1030 | * that are usable and as such we need | |
1031 | * to remove the old route, but only | |
1032 | * if we were the one who installed | |
1033 | * the old route | |
1034 | */ | |
1035 | if (!RIB_SYSTEM_ROUTE(old)) { | |
1036 | /* If labeled-unicast route, uninstall transit | |
1037 | * LSP. */ | |
1038 | if (zebra_rib_labeled_unicast(old)) | |
1039 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
d62a17ae | 1040 | |
5c18e662 DS |
1041 | rib_uninstall_kernel(rn, old); |
1042 | } | |
d62a17ae | 1043 | } |
1044 | } else { | |
1045 | /* | |
1046 | * Same route selected; check if in the FIB and if not, | |
3cdba47a DS |
1047 | * re-install. This is housekeeping code to deal with |
1048 | * race conditions in kernel with linux netlink reporting | |
1049 | * interface up before IPv4 or IPv6 protocol is ready | |
d62a17ae | 1050 | * to add routes. |
1051 | */ | |
3cdba47a DS |
1052 | if (!CHECK_FLAG(new->status, ROUTE_ENTRY_INSTALLED) || |
1053 | RIB_SYSTEM_ROUTE(new)) | |
677c1dd5 | 1054 | rib_install_kernel(rn, new, NULL); |
d62a17ae | 1055 | } |
1056 | ||
1057 | /* Update prior route. */ | |
6883bf8d | 1058 | if (new != old) |
d62a17ae | 1059 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 1060 | |
d62a17ae | 1061 | /* Clear changed flag. */ |
1062 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); | |
3e5c6e00 | 1063 | } |
1064 | ||
d62a17ae | 1065 | /* Check if 'alternate' RIB entry is better than 'current'. */ |
1066 | static struct route_entry *rib_choose_best(struct route_entry *current, | |
1067 | struct route_entry *alternate) | |
1068 | { | |
1069 | if (current == NULL) | |
1070 | return alternate; | |
1071 | ||
1072 | /* filter route selection in following order: | |
1073 | * - connected beats other types | |
fec4ca19 | 1074 | * - if both connected, loopback or vrf wins |
d62a17ae | 1075 | * - lower distance beats higher |
1076 | * - lower metric beats higher for equal distance | |
1077 | * - last, hence oldest, route wins tie break. | |
1078 | */ | |
1079 | ||
fec4ca19 DS |
1080 | /* Connected routes. Check to see if either are a vrf |
1081 | * or loopback interface. If not, pick the last connected | |
d62a17ae | 1082 | * route of the set of lowest metric connected routes. |
1083 | */ | |
1084 | if (alternate->type == ZEBRA_ROUTE_CONNECT) { | |
fec4ca19 DS |
1085 | if (current->type != ZEBRA_ROUTE_CONNECT) |
1086 | return alternate; | |
1087 | ||
1088 | /* both are connected. are either loop or vrf? */ | |
1089 | struct nexthop *nexthop = NULL; | |
1090 | ||
c415d895 | 1091 | for (ALL_NEXTHOPS(alternate->nhe->nhg, nexthop)) { |
873fde8c | 1092 | struct interface *ifp = if_lookup_by_index( |
1093 | nexthop->ifindex, alternate->vrf_id); | |
1094 | ||
1095 | if (ifp && if_is_loopback_or_vrf(ifp)) | |
fec4ca19 DS |
1096 | return alternate; |
1097 | } | |
1098 | ||
c415d895 | 1099 | for (ALL_NEXTHOPS(current->nhe->nhg, nexthop)) { |
873fde8c | 1100 | struct interface *ifp = if_lookup_by_index( |
1101 | nexthop->ifindex, current->vrf_id); | |
1102 | ||
1103 | if (ifp && if_is_loopback_or_vrf(ifp)) | |
fec4ca19 DS |
1104 | return current; |
1105 | } | |
1106 | ||
1107 | /* Neither are loop or vrf so pick best metric */ | |
1108 | if (alternate->metric <= current->metric) | |
d62a17ae | 1109 | return alternate; |
1110 | ||
1111 | return current; | |
1112 | } | |
3e5c6e00 | 1113 | |
d62a17ae | 1114 | if (current->type == ZEBRA_ROUTE_CONNECT) |
1115 | return current; | |
3e5c6e00 | 1116 | |
d62a17ae | 1117 | /* higher distance loses */ |
1118 | if (alternate->distance < current->distance) | |
1119 | return alternate; | |
1120 | if (current->distance < alternate->distance) | |
1121 | return current; | |
3e5c6e00 | 1122 | |
d62a17ae | 1123 | /* metric tie-breaks equal distance */ |
1124 | if (alternate->metric <= current->metric) | |
1125 | return alternate; | |
3e5c6e00 | 1126 | |
d62a17ae | 1127 | return current; |
3e5c6e00 | 1128 | } |
1129 | ||
d62a17ae | 1130 | /* Core function for processing routing information base. */ |
1131 | static void rib_process(struct route_node *rn) | |
1132 | { | |
1133 | struct route_entry *re; | |
1134 | struct route_entry *next; | |
1135 | struct route_entry *old_selected = NULL; | |
1136 | struct route_entry *new_selected = NULL; | |
1137 | struct route_entry *old_fib = NULL; | |
1138 | struct route_entry *new_fib = NULL; | |
1139 | struct route_entry *best = NULL; | |
1140 | char buf[SRCDEST2STR_BUFFER]; | |
1141 | rib_dest_t *dest; | |
1142 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1143 | struct vrf *vrf; |
86391e56 MS |
1144 | const struct prefix *p, *src_p; |
1145 | ||
d62a17ae | 1146 | srcdest_rnode_prefixes(rn, &p, &src_p); |
1147 | vrf_id_t vrf_id = VRF_UNKNOWN; | |
1148 | ||
1149 | assert(rn); | |
1150 | ||
1151 | dest = rib_dest_from_rnode(rn); | |
f0afc61d DS |
1152 | /* |
1153 | * We have an enqueued node with nothing to process here | |
1154 | * let's just finish up and return; | |
1155 | */ | |
1156 | if (!dest) | |
1157 | return; | |
1158 | ||
1159 | zvrf = rib_dest_vrf(dest); | |
1160 | vrf_id = zvrf_id(zvrf); | |
bab85d4f | 1161 | |
bd47f3a3 JU |
1162 | vrf = vrf_lookup_by_id(vrf_id); |
1163 | ||
d62a17ae | 1164 | if (IS_ZEBRA_DEBUG_RIB) |
1165 | srcdest_rnode2str(rn, buf, sizeof(buf)); | |
bab85d4f | 1166 | |
607425e5 DS |
1167 | /* |
1168 | * we can have rn's that have a NULL info pointer | |
1169 | * (dest). As such let's not let the deref happen | |
1170 | * additionally we know RNODE_FOREACH_RE_SAFE | |
1171 | * will not iterate so we are ok. | |
1172 | */ | |
f0afc61d DS |
1173 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1174 | struct route_entry *re = re_list_first(&dest->routes); | |
f5158712 | 1175 | |
f0afc61d DS |
1176 | zlog_debug("%s(%u:%u):%s: Processing rn %p", |
1177 | VRF_LOGNAME(vrf), vrf_id, re->table, buf, | |
1178 | rn); | |
f5158712 | 1179 | } |
5f7a4718 | 1180 | |
f0afc61d DS |
1181 | old_fib = dest->selected_fib; |
1182 | ||
a2addae8 | 1183 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
61e6de9d DS |
1184 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1185 | char flags_buf[128]; | |
1186 | char status_buf[128]; | |
1187 | ||
d62a17ae | 1188 | zlog_debug( |
61e6de9d | 1189 | "%s(%u:%u):%s: Examine re %p (%s) status: %sflags: %sdist %d metric %d", |
c2c02b76 | 1190 | VRF_LOGNAME(vrf), vrf_id, re->table, buf, re, |
61e6de9d DS |
1191 | zebra_route_string(re->type), |
1192 | _dump_re_status(re, status_buf, | |
1193 | sizeof(status_buf)), | |
1194 | zclient_dump_route_flags(re->flags, flags_buf, | |
1195 | sizeof(flags_buf)), | |
1196 | re->distance, re->metric); | |
1197 | } | |
d62a17ae | 1198 | |
d62a17ae | 1199 | /* Currently selected re. */ |
1200 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) { | |
1201 | assert(old_selected == NULL); | |
1202 | old_selected = re; | |
1203 | } | |
bab85d4f | 1204 | |
d62a17ae | 1205 | /* Skip deleted entries from selection */ |
1206 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1207 | continue; | |
1208 | ||
9d221fac DS |
1209 | /* |
1210 | * If the route entry has changed, verify/resolve | |
1211 | * the nexthops associated with the entry. | |
1212 | * | |
1213 | * In any event if we have nexthops that are not active | |
1214 | * then we cannot use this particular route entry so | |
1215 | * skip it. | |
d62a17ae | 1216 | */ |
9d221fac DS |
1217 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED)) { |
1218 | if (!nexthop_active_update(rn, re)) { | |
7e010c4b DS |
1219 | const struct prefix *p; |
1220 | struct rib_table_info *info; | |
1221 | ||
9d221fac DS |
1222 | if (re->type == ZEBRA_ROUTE_TABLE) { |
1223 | /* XXX: HERE BE DRAGONS!!!!! | |
1224 | * In all honesty, I have not yet | |
1225 | * figured out what this part does or | |
1226 | * why the ROUTE_ENTRY_CHANGED test | |
1227 | * above is correct or why we need to | |
1228 | * delete a route here, and also not | |
1229 | * whether this concerns both selected | |
1230 | * and fib route, or only selected | |
1231 | * or only fib | |
1232 | * | |
1233 | * This entry was denied by the 'ip | |
1234 | * protocol | |
1235 | * table' route-map, we need to delete | |
1236 | * it */ | |
1237 | if (re != old_selected) { | |
1238 | if (IS_ZEBRA_DEBUG_RIB) | |
1239 | zlog_debug( | |
1240 | "%s: %s(%u):%s: imported via import-table but denied by the ip protocol table route-map", | |
1241 | __func__, | |
1242 | VRF_LOGNAME( | |
1243 | vrf), | |
1244 | vrf_id, buf); | |
1245 | rib_unlink(rn, re); | |
1246 | } else | |
1247 | SET_FLAG(re->status, | |
1248 | ROUTE_ENTRY_REMOVED); | |
1249 | } | |
d62a17ae | 1250 | |
7e010c4b DS |
1251 | info = srcdest_rnode_table_info(rn); |
1252 | srcdest_rnode_prefixes(rn, &p, NULL); | |
1253 | zsend_route_notify_owner(re, p, | |
1254 | ZAPI_ROUTE_FAIL_INSTALL, | |
1255 | info->afi, info->safi); | |
9d221fac DS |
1256 | continue; |
1257 | } | |
1258 | } else { | |
1259 | /* | |
1260 | * If the re has not changed and the nhg we have is | |
1261 | * not usable, then we cannot use this route entry | |
1262 | * for consideration, as that the route will just | |
1263 | * not install if it is selected. | |
1264 | */ | |
1265 | if (!nexthop_group_active_nexthop_num(&re->nhe->nhg)) | |
1266 | continue; | |
d62a17ae | 1267 | } |
bab85d4f | 1268 | |
d62a17ae | 1269 | /* Infinite distance. */ |
3332f4f0 DS |
1270 | if (re->distance == DISTANCE_INFINITY && |
1271 | re->type != ZEBRA_ROUTE_KERNEL) { | |
d62a17ae | 1272 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
1273 | continue; | |
1274 | } | |
bab85d4f | 1275 | |
d62a17ae | 1276 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_FIB_OVERRIDE)) { |
1277 | best = rib_choose_best(new_fib, re); | |
1278 | if (new_fib && best != new_fib) | |
1279 | UNSET_FLAG(new_fib->status, | |
1280 | ROUTE_ENTRY_CHANGED); | |
1281 | new_fib = best; | |
1282 | } else { | |
1283 | best = rib_choose_best(new_selected, re); | |
1284 | if (new_selected && best != new_selected) | |
1285 | UNSET_FLAG(new_selected->status, | |
1286 | ROUTE_ENTRY_CHANGED); | |
1287 | new_selected = best; | |
1288 | } | |
1289 | if (best != re) | |
1290 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
1291 | } /* RNODE_FOREACH_RE */ | |
1292 | ||
1293 | /* If no FIB override route, use the selected route also for FIB */ | |
1294 | if (new_fib == NULL) | |
1295 | new_fib = new_selected; | |
1296 | ||
1297 | /* After the cycle is finished, the following pointers will be set: | |
1298 | * old_selected --- RE entry currently having SELECTED | |
1299 | * new_selected --- RE entry that is newly SELECTED | |
1300 | * old_fib --- RE entry currently in kernel FIB | |
1301 | * new_fib --- RE entry that is newly to be in kernel FIB | |
1302 | * | |
1303 | * new_selected will get SELECTED flag, and is going to be redistributed | |
1304 | * the zclients. new_fib (which can be new_selected) will be installed | |
1305 | * in kernel. | |
1306 | */ | |
1307 | ||
1308 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
c2c02b76 DS |
1309 | struct route_entry *entry; |
1310 | ||
1311 | entry = old_selected | |
1312 | ? old_selected | |
1313 | : new_selected | |
1314 | ? new_selected | |
1315 | : old_fib ? old_fib | |
1316 | : new_fib ? new_fib : NULL; | |
1317 | ||
d62a17ae | 1318 | zlog_debug( |
c2c02b76 DS |
1319 | "%s(%u:%u):%s: After processing: old_selected %p new_selected %p old_fib %p new_fib %p", |
1320 | VRF_LOGNAME(vrf), vrf_id, entry ? entry->table : 0, buf, | |
1321 | (void *)old_selected, (void *)new_selected, | |
1322 | (void *)old_fib, (void *)new_fib); | |
d62a17ae | 1323 | } |
446bb95e | 1324 | |
d62a17ae | 1325 | /* Buffer ROUTE_ENTRY_CHANGED here, because it will get cleared if |
1326 | * fib == selected */ | |
9d303b37 DL |
1327 | bool selected_changed = new_selected && CHECK_FLAG(new_selected->status, |
1328 | ROUTE_ENTRY_CHANGED); | |
d62a17ae | 1329 | |
1330 | /* Update fib according to selection results */ | |
1331 | if (new_fib && old_fib) | |
1332 | rib_process_update_fib(zvrf, rn, old_fib, new_fib); | |
1333 | else if (new_fib) | |
1334 | rib_process_add_fib(zvrf, rn, new_fib); | |
1335 | else if (old_fib) | |
1336 | rib_process_del_fib(zvrf, rn, old_fib); | |
1337 | ||
8cb41cd6 | 1338 | /* Update SELECTED entry */ |
d62a17ae | 1339 | if (old_selected != new_selected || selected_changed) { |
93bdadae | 1340 | |
6883bf8d | 1341 | if (new_selected && new_selected != new_fib) |
d62a17ae | 1342 | UNSET_FLAG(new_selected->status, ROUTE_ENTRY_CHANGED); |
41ec9222 | 1343 | |
3cdba47a | 1344 | if (new_selected) |
5af4b346 MS |
1345 | SET_FLAG(new_selected->flags, ZEBRA_FLAG_SELECTED); |
1346 | ||
d62a17ae | 1347 | if (old_selected) { |
40f321c0 MS |
1348 | /* |
1349 | * If we're removing the old entry, we should tell | |
1350 | * redist subscribers about that *if* they aren't | |
1351 | * going to see a redist for the new entry. | |
1352 | */ | |
1353 | if (!new_selected || CHECK_FLAG(old_selected->status, | |
1354 | ROUTE_ENTRY_REMOVED)) | |
1355 | redistribute_delete(p, src_p, | |
1356 | old_selected, | |
1357 | new_selected); | |
1358 | ||
d62a17ae | 1359 | if (old_selected != new_selected) |
1360 | UNSET_FLAG(old_selected->flags, | |
1361 | ZEBRA_FLAG_SELECTED); | |
f857321e | 1362 | } |
d62a17ae | 1363 | } |
3e5c6e00 | 1364 | |
d62a17ae | 1365 | /* Remove all RE entries queued for removal */ |
a2addae8 | 1366 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 1367 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { |
1368 | if (IS_ZEBRA_DEBUG_RIB) { | |
1369 | rnode_debug(rn, vrf_id, "rn %p, removing re %p", | |
1370 | (void *)rn, (void *)re); | |
1371 | } | |
1372 | rib_unlink(rn, re); | |
1373 | } | |
1374 | } | |
4d38fdb4 | 1375 | |
d62a17ae | 1376 | /* |
1377 | * Check if the dest can be deleted now. | |
1378 | */ | |
1379 | rib_gc_dest(rn); | |
e96f9203 DO |
1380 | } |
1381 | ||
a1494c25 DS |
1382 | static void zebra_rib_evaluate_mpls(struct route_node *rn) |
1383 | { | |
1384 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
1385 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1386 | ||
1387 | if (!dest) | |
1388 | return; | |
1389 | ||
1390 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_LSPS)) { | |
1391 | if (IS_ZEBRA_DEBUG_MPLS) | |
1392 | zlog_debug( | |
bd47f3a3 JU |
1393 | "%s(%u): Scheduling all LSPs upon RIB completion", |
1394 | zvrf_name(zvrf), zvrf_id(zvrf)); | |
a1494c25 DS |
1395 | zebra_mpls_lsp_schedule(zvrf); |
1396 | mpls_unmark_lsps_for_processing(rn); | |
1397 | } | |
1398 | } | |
1399 | ||
e5ac2adf MS |
1400 | /* |
1401 | * Utility to match route with dplane context data | |
1402 | */ | |
1403 | static bool rib_route_match_ctx(const struct route_entry *re, | |
25779064 MS |
1404 | const struct zebra_dplane_ctx *ctx, |
1405 | bool is_update) | |
e5ac2adf MS |
1406 | { |
1407 | bool result = false; | |
1408 | ||
1409 | if (is_update) { | |
1410 | /* | |
1411 | * In 'update' case, we test info about the 'previous' or | |
1412 | * 'old' route | |
1413 | */ | |
1414 | if ((re->type == dplane_ctx_get_old_type(ctx)) && | |
1415 | (re->instance == dplane_ctx_get_old_instance(ctx))) { | |
1416 | result = true; | |
1417 | ||
9db35a5e MS |
1418 | /* We use an extra test for statics, and another for |
1419 | * kernel routes. | |
e5ac2adf MS |
1420 | */ |
1421 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1422 | (re->distance != dplane_ctx_get_old_distance(ctx) || | |
1423 | re->tag != dplane_ctx_get_old_tag(ctx))) { | |
1424 | result = false; | |
9db35a5e MS |
1425 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1426 | re->metric != | |
1427 | dplane_ctx_get_old_metric(ctx)) { | |
1428 | result = false; | |
e5ac2adf MS |
1429 | } |
1430 | } | |
1431 | ||
1432 | } else { | |
1433 | /* | |
1434 | * Ordinary, single-route case using primary context info | |
1435 | */ | |
1436 | if ((dplane_ctx_get_op(ctx) != DPLANE_OP_ROUTE_DELETE) && | |
1437 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
1438 | /* Skip route that's been deleted */ | |
1439 | goto done; | |
1440 | } | |
1441 | ||
1442 | if ((re->type == dplane_ctx_get_type(ctx)) && | |
1443 | (re->instance == dplane_ctx_get_instance(ctx))) { | |
1444 | result = true; | |
1445 | ||
9db35a5e MS |
1446 | /* We use an extra test for statics, and another for |
1447 | * kernel routes. | |
e5ac2adf MS |
1448 | */ |
1449 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1450 | (re->distance != dplane_ctx_get_distance(ctx) || | |
1451 | re->tag != dplane_ctx_get_tag(ctx))) { | |
1452 | result = false; | |
9db35a5e MS |
1453 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1454 | re->metric != dplane_ctx_get_metric(ctx)) { | |
1455 | result = false; | |
1456 | } else if (re->type == ZEBRA_ROUTE_CONNECT) { | |
1457 | result = nexthop_group_equal_no_recurse( | |
1458 | &re->nhe->nhg, dplane_ctx_get_ng(ctx)); | |
e5ac2adf MS |
1459 | } |
1460 | } | |
1461 | } | |
1462 | ||
1463 | done: | |
1464 | ||
1465 | return (result); | |
1466 | } | |
1467 | ||
3cdba47a DS |
1468 | static void zebra_rib_fixup_system(struct route_node *rn) |
1469 | { | |
1470 | struct route_entry *re; | |
1471 | ||
1472 | RNODE_FOREACH_RE(rn, re) { | |
1473 | struct nexthop *nhop; | |
1474 | ||
1475 | if (!RIB_SYSTEM_ROUTE(re)) | |
1476 | continue; | |
1477 | ||
1478 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1479 | continue; | |
1480 | ||
1481 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
6d0ee6a0 | 1482 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
3cdba47a | 1483 | |
c415d895 | 1484 | for (ALL_NEXTHOPS(re->nhe->nhg, nhop)) { |
3cdba47a DS |
1485 | if (CHECK_FLAG(nhop->flags, NEXTHOP_FLAG_RECURSIVE)) |
1486 | continue; | |
1487 | ||
1488 | SET_FLAG(nhop->flags, NEXTHOP_FLAG_FIB); | |
1489 | } | |
1490 | } | |
1491 | } | |
1492 | ||
9db35a5e MS |
1493 | /* Route comparison logic, with various special cases. */ |
1494 | static bool rib_compare_routes(const struct route_entry *re1, | |
1495 | const struct route_entry *re2) | |
1496 | { | |
9db35a5e MS |
1497 | if (re1->type != re2->type) |
1498 | return false; | |
1499 | ||
1500 | if (re1->instance != re2->instance) | |
1501 | return false; | |
1502 | ||
1503 | if (re1->type == ZEBRA_ROUTE_KERNEL && re1->metric != re2->metric) | |
1504 | return false; | |
1505 | ||
1506 | if (CHECK_FLAG(re1->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && | |
1507 | re1->distance != re2->distance) | |
1508 | return false; | |
1509 | ||
87009d7d MS |
1510 | /* We support multiple connected routes: this supports multiple |
1511 | * v6 link-locals, and we also support multiple addresses in the same | |
1512 | * subnet on a single interface. | |
1513 | */ | |
9db35a5e MS |
1514 | if (re1->type != ZEBRA_ROUTE_CONNECT) |
1515 | return true; | |
1516 | ||
87009d7d | 1517 | return false; |
9db35a5e MS |
1518 | } |
1519 | ||
9959f1da MS |
1520 | /* |
1521 | * Compare nexthop lists from a route and a dplane context; test whether | |
1522 | * the list installed in the FIB matches the route's list. | |
1523 | * Set 'changed_p' to 'true' if there were changes to the route's | |
1524 | * installed nexthops. | |
1525 | * | |
1526 | * Return 'false' if any ACTIVE route nexthops are not mentioned in the FIB | |
1527 | * list. | |
1528 | */ | |
1529 | static bool rib_update_nhg_from_ctx(struct nexthop_group *re_nhg, | |
1530 | const struct nexthop_group *ctx_nhg, | |
1531 | bool *changed_p) | |
1532 | { | |
1533 | bool matched_p = true; | |
1534 | struct nexthop *nexthop, *ctx_nexthop; | |
1535 | ||
1536 | /* Get the first `installed` one to check against. | |
1537 | * If the dataplane doesn't set these to be what was actually installed, | |
1538 | * it will just be whatever was in re->nhe->nhg? | |
1539 | */ | |
1540 | ctx_nexthop = ctx_nhg->nexthop; | |
1541 | ||
1542 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
1543 | || !CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1544 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1545 | ||
1546 | for (ALL_NEXTHOPS_PTR(re_nhg, nexthop)) { | |
1547 | ||
1548 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
1549 | continue; | |
1550 | ||
1551 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1552 | continue; | |
1553 | ||
1554 | /* Check for a FIB nexthop corresponding to the RIB nexthop */ | |
7483dcbe | 1555 | if (!nexthop_same(ctx_nexthop, nexthop)) { |
9959f1da MS |
1556 | /* If the FIB doesn't know about the nexthop, |
1557 | * it's not installed | |
1558 | */ | |
1559 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || | |
1560 | IS_ZEBRA_DEBUG_NHG_DETAIL) { | |
1561 | zlog_debug("%s: no ctx match for rib nh %pNHv %s", | |
1562 | __func__, nexthop, | |
1563 | (CHECK_FLAG(nexthop->flags, | |
1564 | NEXTHOP_FLAG_FIB) ? | |
1565 | "(FIB)":"")); | |
1566 | } | |
1567 | matched_p = false; | |
1568 | ||
1569 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1570 | *changed_p = true; | |
1571 | ||
1572 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1573 | ||
1574 | /* Keep checking nexthops */ | |
1575 | continue; | |
1576 | } | |
1577 | ||
1578 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1579 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1580 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1581 | zlog_debug("%s: rib nh %pNHv -> installed", | |
1582 | __func__, nexthop); | |
1583 | ||
1584 | *changed_p = true; | |
1585 | } | |
1586 | ||
1587 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1588 | } else { | |
1589 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1590 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1591 | zlog_debug("%s: rib nh %pNHv -> uninstalled", | |
1592 | __func__, nexthop); | |
1593 | ||
1594 | *changed_p = true; | |
1595 | } | |
1596 | ||
1597 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1598 | } | |
1599 | ||
1600 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1601 | } | |
1602 | ||
1603 | return matched_p; | |
1604 | } | |
1605 | ||
e5ac2adf | 1606 | /* |
78bf56b0 MS |
1607 | * Update a route from a dplane context. This consolidates common code |
1608 | * that can be used in processing of results from FIB updates, and in | |
1609 | * async notification processing. | |
efe6c026 | 1610 | * The return is 'true' if the installed nexthops changed; 'false' otherwise. |
e5ac2adf | 1611 | */ |
efe6c026 MS |
1612 | static bool rib_update_re_from_ctx(struct route_entry *re, |
1613 | struct route_node *rn, | |
1614 | struct zebra_dplane_ctx *ctx) | |
78bf56b0 | 1615 | { |
9959f1da | 1616 | struct nexthop *nexthop; |
941e261c MS |
1617 | bool matched; |
1618 | const struct nexthop_group *ctxnhg; | |
9959f1da | 1619 | struct nexthop_group *re_nhg; |
efe6c026 MS |
1620 | bool is_selected = false; /* Is 're' currently the selected re? */ |
1621 | bool changed_p = false; /* Change to nexthops? */ | |
1622 | rib_dest_t *dest; | |
bd47f3a3 JU |
1623 | struct vrf *vrf; |
1624 | ||
1625 | vrf = vrf_lookup_by_id(re->vrf_id); | |
78bf56b0 | 1626 | |
efe6c026 MS |
1627 | dest = rib_dest_from_rnode(rn); |
1628 | if (dest) | |
1629 | is_selected = (re == dest->selected_fib); | |
1630 | ||
1631 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2919eea8 DS |
1632 | zlog_debug("update_from_ctx: %s(%u:%u):%pRN: %sSELECTED, re %p", |
1633 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
9db35a5e | 1634 | (is_selected ? "" : "NOT "), re); |
efe6c026 MS |
1635 | |
1636 | /* Update zebra's nexthop FIB flag for each nexthop that was installed. | |
941e261c | 1637 | * If the installed set differs from the set requested by the rib/owner, |
efe6c026 MS |
1638 | * we use the fib-specific nexthop-group to record the actual FIB |
1639 | * status. | |
78bf56b0 | 1640 | */ |
a126f120 MS |
1641 | matched = false; |
1642 | ctxnhg = dplane_ctx_get_ng(ctx); | |
941e261c | 1643 | |
9959f1da | 1644 | /* Check route's fib group and incoming notif group for equivalence. |
986a6617 SW |
1645 | * |
1646 | * Let's assume the nexthops are ordered here to save time. | |
941e261c | 1647 | */ |
9959f1da MS |
1648 | /* TODO -- this isn't testing or comparing the FIB flags; we should |
1649 | * do a more explicit loop, checking the incoming notification's flags. | |
1650 | */ | |
a126f120 MS |
1651 | if (re->fib_ng.nexthop && ctxnhg->nexthop && |
1652 | nexthop_group_equal(&re->fib_ng, ctxnhg)) | |
986a6617 | 1653 | matched = true; |
941e261c MS |
1654 | |
1655 | /* If the new FIB set matches the existing FIB set, we're done. */ | |
1656 | if (matched) { | |
1657 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1658 | zlog_debug( |
2919eea8 DS |
1659 | "%s(%u:%u):%pRN update_from_ctx(): existing fib nhg, no change", |
1660 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
9959f1da | 1661 | goto check_backups; |
941e261c | 1662 | |
7483dcbe | 1663 | } else if (CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG)) { |
941e261c MS |
1664 | /* |
1665 | * Free stale fib list and move on to check the rib nhg. | |
1666 | */ | |
1667 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1668 | zlog_debug( |
2919eea8 DS |
1669 | "%s(%u:%u):%pRN update_from_ctx(): replacing fib nhg", |
1670 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1671 | nexthops_free(re->fib_ng.nexthop); |
1672 | re->fib_ng.nexthop = NULL; | |
efe6c026 | 1673 | |
7483dcbe MS |
1674 | UNSET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); |
1675 | ||
efe6c026 MS |
1676 | /* Note that the installed nexthops have changed */ |
1677 | changed_p = true; | |
941e261c MS |
1678 | } else { |
1679 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1680 | zlog_debug( |
1681 | "%s(%u:%u):%pRN update_from_ctx(): no fib nhg", | |
1682 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1683 | } |
1684 | ||
1685 | /* | |
1686 | * Compare with the rib nexthop group. The comparison here is different: | |
1687 | * the RIB group may be a superset of the list installed in the FIB. We | |
1688 | * walk the RIB group, looking for the 'installable' candidate | |
1689 | * nexthops, and then check those against the set | |
1690 | * that is actually installed. | |
986a6617 SW |
1691 | * |
1692 | * Assume nexthops are ordered here as well. | |
941e261c | 1693 | */ |
986a6617 | 1694 | |
9959f1da | 1695 | /* If nothing is installed, we can skip some of the checking/comparison |
1f6a5aca MS |
1696 | * of nexthops. |
1697 | */ | |
9959f1da | 1698 | if (ctxnhg->nexthop == NULL) { |
1f6a5aca MS |
1699 | changed_p = true; |
1700 | goto no_nexthops; | |
1701 | } | |
1702 | ||
9959f1da | 1703 | matched = rib_update_nhg_from_ctx(&(re->nhe->nhg), ctxnhg, &changed_p); |
78bf56b0 | 1704 | |
941e261c MS |
1705 | /* If all nexthops were processed, we're done */ |
1706 | if (matched) { | |
1707 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1708 | zlog_debug( |
2919eea8 DS |
1709 | "%s(%u:%u):%pRN update_from_ctx(): rib nhg matched, changed '%s'", |
1710 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
1711 | (changed_p ? "true" : "false")); | |
9959f1da | 1712 | goto check_backups; |
941e261c | 1713 | } |
78bf56b0 | 1714 | |
1f6a5aca MS |
1715 | no_nexthops: |
1716 | ||
941e261c MS |
1717 | /* FIB nexthop set differs from the RIB set: |
1718 | * create a fib-specific nexthop-group | |
1719 | */ | |
1720 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1721 | zlog_debug( |
2919eea8 DS |
1722 | "%s(%u:%u):%pRN update_from_ctx(): changed %s, adding new fib nhg%s", |
1723 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
7483dcbe MS |
1724 | (changed_p ? "true" : "false"), |
1725 | ctxnhg->nexthop != NULL ? "" : " (empty)"); | |
941e261c | 1726 | |
7483dcbe MS |
1727 | /* Set the flag about the dedicated fib list */ |
1728 | SET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); | |
188a00e0 MS |
1729 | if (ctxnhg->nexthop) |
1730 | copy_nexthops(&(re->fib_ng.nexthop), ctxnhg->nexthop, NULL); | |
941e261c | 1731 | |
9959f1da MS |
1732 | check_backups: |
1733 | ||
1734 | /* | |
1735 | * Check the status of the route's backup nexthops, if any. | |
1736 | * The logic for backups is somewhat different: if any backup is | |
1737 | * installed, a new fib nhg will be attached to the route. | |
1738 | */ | |
1739 | re_nhg = zebra_nhg_get_backup_nhg(re->nhe); | |
1740 | if (re_nhg == NULL) | |
1741 | goto done; /* No backup nexthops */ | |
1742 | ||
1743 | /* First check the route's 'fib' list of backups, if it's present | |
1744 | * from some previous event. | |
1745 | */ | |
1746 | re_nhg = &re->fib_backup_ng; | |
1747 | ctxnhg = dplane_ctx_get_backup_ng(ctx); | |
1748 | ||
1749 | matched = false; | |
1750 | if (re_nhg->nexthop && ctxnhg && nexthop_group_equal(re_nhg, ctxnhg)) | |
1751 | matched = true; | |
1752 | ||
1753 | /* If the new FIB set matches an existing FIB set, we're done. */ | |
1754 | if (matched) { | |
1755 | if (IS_ZEBRA_DEBUG_RIB) | |
1756 | zlog_debug( | |
2919eea8 DS |
1757 | "%s(%u):%pRN update_from_ctx(): existing fib backup nhg, no change", |
1758 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1759 | goto done; |
1760 | ||
1761 | } else if (re->fib_backup_ng.nexthop) { | |
1762 | /* | |
1763 | * Free stale fib backup list and move on to check | |
1764 | * the route's backups. | |
1765 | */ | |
1766 | if (IS_ZEBRA_DEBUG_RIB) | |
1767 | zlog_debug( | |
2919eea8 DS |
1768 | "%s(%u):%pRN update_from_ctx(): replacing fib backup nhg", |
1769 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1770 | nexthops_free(re->fib_backup_ng.nexthop); |
1771 | re->fib_backup_ng.nexthop = NULL; | |
1772 | ||
1773 | /* Note that the installed nexthops have changed */ | |
1774 | changed_p = true; | |
1775 | } else { | |
1776 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1777 | zlog_debug( |
1778 | "%s(%u):%pRN update_from_ctx(): no fib backup nhg", | |
1779 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1780 | } |
1781 | ||
1782 | /* | |
7483dcbe | 1783 | * If a FIB backup nexthop set exists, attach a copy |
9959f1da MS |
1784 | * to the route if any backup is installed |
1785 | */ | |
1786 | if (ctxnhg && ctxnhg->nexthop) { | |
1787 | ||
1788 | for (ALL_NEXTHOPS_PTR(ctxnhg, nexthop)) { | |
1789 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1790 | break; | |
1791 | } | |
1792 | ||
1793 | /* If no installed backups, we're done */ | |
1794 | if (nexthop == NULL) | |
1795 | goto done; | |
1796 | ||
1797 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1798 | zlog_debug( |
1799 | "%s(%u):%pRN update_from_ctx(): changed %s, adding new backup fib nhg", | |
1800 | VRF_LOGNAME(vrf), re->vrf_id, rn, | |
1801 | (changed_p ? "true" : "false")); | |
9959f1da MS |
1802 | |
1803 | copy_nexthops(&(re->fib_backup_ng.nexthop), ctxnhg->nexthop, | |
1804 | NULL); | |
1805 | } | |
1806 | ||
941e261c | 1807 | done: |
9959f1da | 1808 | |
efe6c026 | 1809 | return changed_p; |
78bf56b0 MS |
1810 | } |
1811 | ||
e5ac2adf | 1812 | /* |
fad4d69c MS |
1813 | * Helper to locate a zebra route-node from a dplane context. This is used |
1814 | * when processing dplane results, e.g. Note well: the route-node is returned | |
1815 | * with a ref held - route_unlock_node() must be called eventually. | |
e5ac2adf | 1816 | */ |
fad4d69c MS |
1817 | static struct route_node * |
1818 | rib_find_rn_from_ctx(const struct zebra_dplane_ctx *ctx) | |
e5ac2adf MS |
1819 | { |
1820 | struct route_table *table = NULL; | |
1821 | struct route_node *rn = NULL; | |
e5ac2adf MS |
1822 | const struct prefix *dest_pfx, *src_pfx; |
1823 | ||
1824 | /* Locate rn and re(s) from ctx */ | |
1825 | ||
c7c0b007 SW |
1826 | table = zebra_vrf_lookup_table_with_table_id( |
1827 | dplane_ctx_get_afi(ctx), dplane_ctx_get_safi(ctx), | |
1828 | dplane_ctx_get_vrf(ctx), dplane_ctx_get_table(ctx)); | |
e5ac2adf MS |
1829 | if (table == NULL) { |
1830 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 JU |
1831 | zlog_debug( |
1832 | "Failed to find route for ctx: no table for afi %d, safi %d, vrf %s(%u)", | |
1833 | dplane_ctx_get_afi(ctx), | |
1834 | dplane_ctx_get_safi(ctx), | |
1835 | vrf_id_to_name(dplane_ctx_get_vrf(ctx)), | |
1836 | dplane_ctx_get_vrf(ctx)); | |
e5ac2adf MS |
1837 | } |
1838 | goto done; | |
1839 | } | |
1840 | ||
fad4d69c MS |
1841 | dest_pfx = dplane_ctx_get_dest(ctx); |
1842 | src_pfx = dplane_ctx_get_src(ctx); | |
1843 | ||
1844 | rn = srcdest_rnode_get(table, dest_pfx, | |
1845 | src_pfx ? (struct prefix_ipv6 *)src_pfx : NULL); | |
1846 | ||
1847 | done: | |
1848 | return rn; | |
1849 | } | |
1850 | ||
1851 | ||
97f5b441 | 1852 | |
fad4d69c MS |
1853 | /* |
1854 | * Route-update results processing after async dataplane update. | |
1855 | */ | |
1856 | static void rib_process_result(struct zebra_dplane_ctx *ctx) | |
1857 | { | |
1858 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1859 | struct vrf *vrf; |
fad4d69c MS |
1860 | struct route_node *rn = NULL; |
1861 | struct route_entry *re = NULL, *old_re = NULL, *rib; | |
1862 | bool is_update = false; | |
fad4d69c MS |
1863 | enum dplane_op_e op; |
1864 | enum zebra_dplane_result status; | |
1865 | const struct prefix *dest_pfx, *src_pfx; | |
1866 | uint32_t seq; | |
9db35a5e | 1867 | rib_dest_t *dest; |
efe6c026 | 1868 | bool fib_changed = false; |
77b38a4a | 1869 | struct rib_table_info *info; |
97f5b441 | 1870 | |
fad4d69c | 1871 | zvrf = vrf_info_lookup(dplane_ctx_get_vrf(ctx)); |
bd47f3a3 | 1872 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
e5ac2adf MS |
1873 | dest_pfx = dplane_ctx_get_dest(ctx); |
1874 | ||
fad4d69c MS |
1875 | /* Locate rn and re(s) from ctx */ |
1876 | rn = rib_find_rn_from_ctx(ctx); | |
e5ac2adf MS |
1877 | if (rn == NULL) { |
1878 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 | 1879 | zlog_debug( |
2919eea8 | 1880 | "Failed to process dplane results: no route for %s(%u):%pFX", |
bd47f3a3 | 1881 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 1882 | dest_pfx); |
e5ac2adf MS |
1883 | } |
1884 | goto done; | |
1885 | } | |
1886 | ||
9db35a5e | 1887 | dest = rib_dest_from_rnode(rn); |
e5ac2adf | 1888 | srcdest_rnode_prefixes(rn, &dest_pfx, &src_pfx); |
77b38a4a | 1889 | info = srcdest_rnode_table_info(rn); |
e5ac2adf MS |
1890 | |
1891 | op = dplane_ctx_get_op(ctx); | |
1892 | status = dplane_ctx_get_status(ctx); | |
1893 | ||
c831033f | 1894 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1895 | zlog_debug( |
2919eea8 | 1896 | "%s(%u:%u):%pFX Processing dplane result ctx %p, op %s result %s", |
c2c02b76 | 1897 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 1898 | dplane_ctx_get_table(ctx), dest_pfx, ctx, |
c2c02b76 | 1899 | dplane_op2str(op), dplane_res2str(status)); |
e5ac2adf | 1900 | |
e5ac2adf MS |
1901 | /* |
1902 | * Update is a bit of a special case, where we may have both old and new | |
1903 | * routes to post-process. | |
1904 | */ | |
1905 | is_update = dplane_ctx_is_update(ctx); | |
1906 | ||
1907 | /* | |
1908 | * Take a pass through the routes, look for matches with the context | |
1909 | * info. | |
1910 | */ | |
1911 | RNODE_FOREACH_RE(rn, rib) { | |
1912 | ||
1913 | if (re == NULL) { | |
5709131c | 1914 | if (rib_route_match_ctx(rib, ctx, false)) |
e5ac2adf | 1915 | re = rib; |
e5ac2adf MS |
1916 | } |
1917 | ||
1918 | /* Check for old route match */ | |
1919 | if (is_update && (old_re == NULL)) { | |
5709131c | 1920 | if (rib_route_match_ctx(rib, ctx, true /*is_update*/)) |
e5ac2adf | 1921 | old_re = rib; |
e5ac2adf MS |
1922 | } |
1923 | ||
1924 | /* Have we found the routes we need to work on? */ | |
5709131c | 1925 | if (re && ((!is_update || old_re))) |
e5ac2adf | 1926 | break; |
e5ac2adf MS |
1927 | } |
1928 | ||
699dae23 DS |
1929 | seq = dplane_ctx_get_seq(ctx); |
1930 | ||
e5ac2adf MS |
1931 | /* |
1932 | * Check sequence number(s) to detect stale results before continuing | |
1933 | */ | |
60f98b23 | 1934 | if (re) { |
699dae23 | 1935 | if (re->dplane_sequence != seq) { |
60f98b23 | 1936 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1937 | zlog_debug( |
2919eea8 | 1938 | "%s(%u):%pFX Stale dplane result for re %p", |
bd47f3a3 | 1939 | VRF_LOGNAME(vrf), |
2919eea8 | 1940 | dplane_ctx_get_vrf(ctx), dest_pfx, re); |
e4876266 DS |
1941 | } else { |
1942 | if (!zrouter.asic_offloaded || | |
1943 | (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED) || | |
1944 | CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED))) | |
1945 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); | |
1946 | } | |
e5ac2adf MS |
1947 | } |
1948 | ||
60f98b23 DS |
1949 | if (old_re) { |
1950 | if (old_re->dplane_sequence != dplane_ctx_get_old_seq(ctx)) { | |
1951 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 1952 | zlog_debug( |
2919eea8 | 1953 | "%s(%u:%u):%pFX Stale dplane result for old_re %p", |
bd47f3a3 | 1954 | VRF_LOGNAME(vrf), |
c2c02b76 | 1955 | dplane_ctx_get_vrf(ctx), old_re->table, |
2919eea8 | 1956 | dest_pfx, old_re); |
60f98b23 | 1957 | } else |
9ef0c6ba | 1958 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_QUEUED); |
e5ac2adf MS |
1959 | } |
1960 | ||
12e7fe3a | 1961 | switch (op) { |
12e7fe3a DS |
1962 | case DPLANE_OP_ROUTE_INSTALL: |
1963 | case DPLANE_OP_ROUTE_UPDATE: | |
1964 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
677c1dd5 DS |
1965 | if (re) { |
1966 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
1967 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
1968 | } | |
b9f0e5ee DS |
1969 | /* |
1970 | * On an update operation from the same route type | |
1971 | * context retrieval currently has no way to know | |
1972 | * which was the old and which was the new. | |
1973 | * So don't unset our flags that we just set. | |
1974 | * We know redistribution is ok because the | |
1975 | * old_re in this case is used for nothing | |
1976 | * more than knowing whom to contact if necessary. | |
1977 | */ | |
1978 | if (old_re && old_re != re) { | |
677c1dd5 DS |
1979 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
1980 | UNSET_FLAG(old_re->status, | |
1981 | ROUTE_ENTRY_INSTALLED); | |
1982 | } | |
f183e380 | 1983 | |
78bf56b0 | 1984 | /* Update zebra route based on the results in |
941e261c | 1985 | * the context struct. |
78bf56b0 | 1986 | */ |
941e261c | 1987 | if (re) { |
efe6c026 MS |
1988 | fib_changed = |
1989 | rib_update_re_from_ctx(re, rn, ctx); | |
1990 | ||
1991 | if (!fib_changed) { | |
1992 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 1993 | zlog_debug( |
2919eea8 | 1994 | "%s(%u:%u):%pFX no fib change for re", |
bd47f3a3 JU |
1995 | VRF_LOGNAME(vrf), |
1996 | dplane_ctx_get_vrf(ctx), | |
c2c02b76 DS |
1997 | dplane_ctx_get_table( |
1998 | ctx), | |
2919eea8 | 1999 | dest_pfx); |
12e7fe3a DS |
2000 | } |
2001 | ||
9db35a5e MS |
2002 | /* Redistribute if this is the selected re */ |
2003 | if (dest && re == dest->selected_fib) | |
2004 | redistribute_update(dest_pfx, src_pfx, | |
2005 | re, old_re); | |
f183e380 MS |
2006 | } |
2007 | ||
3cdba47a DS |
2008 | /* |
2009 | * System routes are weird in that they | |
2010 | * allow multiple to be installed that match | |
2011 | * to the same prefix, so after we get the | |
2012 | * result we need to clean them up so that | |
2013 | * we can actually use them. | |
2014 | */ | |
2015 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
2016 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
2017 | zebra_rib_fixup_system(rn); | |
2018 | ||
f4c6e2a8 | 2019 | if (zvrf) |
12e7fe3a | 2020 | zvrf->installs++; |
f183e380 | 2021 | |
12e7fe3a | 2022 | /* Notify route owner */ |
e4876266 DS |
2023 | if (zebra_router_notify_on_ack()) |
2024 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_INSTALLED); | |
2025 | else { | |
2026 | if (re) { | |
2027 | if (CHECK_FLAG(re->flags, | |
2028 | ZEBRA_FLAG_OFFLOADED)) | |
2029 | zsend_route_notify_owner_ctx( | |
2030 | ctx, | |
2031 | ZAPI_ROUTE_INSTALLED); | |
2032 | if (CHECK_FLAG( | |
2033 | re->flags, | |
2034 | ZEBRA_FLAG_OFFLOAD_FAILED)) | |
2035 | zsend_route_notify_owner_ctx( | |
2036 | ctx, | |
2037 | ZAPI_ROUTE_FAIL_INSTALL); | |
2038 | } | |
2039 | } | |
12e7fe3a | 2040 | } else { |
7a230a9d | 2041 | if (re) { |
677c1dd5 | 2042 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); |
7a230a9d DS |
2043 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
2044 | } if (old_re) | |
677c1dd5 DS |
2045 | SET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
2046 | if (re) | |
2047 | zsend_route_notify_owner(re, dest_pfx, | |
77b38a4a S |
2048 | ZAPI_ROUTE_FAIL_INSTALL, |
2049 | info->afi, info->safi); | |
97f5b441 | 2050 | |
2dbe669b | 2051 | zlog_warn("%s(%u:%u):%pFX: Route install failed", |
bd47f3a3 | 2052 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2dbe669b | 2053 | dplane_ctx_get_table(ctx), dest_pfx); |
12e7fe3a DS |
2054 | } |
2055 | break; | |
2056 | case DPLANE_OP_ROUTE_DELETE: | |
677c1dd5 DS |
2057 | if (re) |
2058 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
2059 | /* |
2060 | * In the delete case, the zebra core datastructs were | |
2061 | * updated (or removed) at the time the delete was issued, | |
2062 | * so we're just notifying the route owner. | |
e5ac2adf | 2063 | */ |
12e7fe3a | 2064 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
677c1dd5 DS |
2065 | if (re) { |
2066 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2067 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
2068 | } | |
12e7fe3a | 2069 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_REMOVED); |
e5ac2adf | 2070 | |
12e7fe3a DS |
2071 | if (zvrf) |
2072 | zvrf->removals++; | |
2073 | } else { | |
677c1dd5 DS |
2074 | if (re) |
2075 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
2076 | zsend_route_notify_owner_ctx(ctx, |
2077 | ZAPI_ROUTE_REMOVE_FAIL); | |
e5ac2adf | 2078 | |
2dbe669b | 2079 | zlog_warn("%s(%u:%u):%pFX: Route Deletion failure", |
bd47f3a3 | 2080 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2dbe669b | 2081 | dplane_ctx_get_table(ctx), dest_pfx); |
12e7fe3a | 2082 | } |
3cdba47a DS |
2083 | |
2084 | /* | |
2085 | * System routes are weird in that they | |
2086 | * allow multiple to be installed that match | |
2087 | * to the same prefix, so after we get the | |
2088 | * result we need to clean them up so that | |
2089 | * we can actually use them. | |
2090 | */ | |
2091 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
2092 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
2093 | zebra_rib_fixup_system(rn); | |
12e7fe3a | 2094 | break; |
d37f4d6c MS |
2095 | default: |
2096 | break; | |
e5ac2adf | 2097 | } |
699dae23 DS |
2098 | |
2099 | zebra_rib_evaluate_rn_nexthops(rn, seq); | |
a1494c25 | 2100 | zebra_rib_evaluate_mpls(rn); |
e5ac2adf MS |
2101 | done: |
2102 | ||
5f27bcba DS |
2103 | if (rn) |
2104 | route_unlock_node(rn); | |
2105 | ||
e5ac2adf MS |
2106 | /* Return context to dataplane module */ |
2107 | dplane_ctx_fini(&ctx); | |
2108 | } | |
2109 | ||
9959f1da MS |
2110 | /* |
2111 | * Count installed/FIB nexthops | |
2112 | */ | |
2113 | static int rib_count_installed_nh(struct route_entry *re) | |
2114 | { | |
2115 | int count = 0; | |
2116 | struct nexthop *nexthop; | |
2117 | struct nexthop_group *nhg; | |
2118 | ||
2119 | nhg = rib_get_fib_nhg(re); | |
2120 | ||
2121 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2122 | /* The meaningful flag depends on where the installed | |
2123 | * nexthops reside. | |
2124 | */ | |
43a9f66c | 2125 | if (nhg == &(re->fib_ng)) { |
9959f1da MS |
2126 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) |
2127 | count++; | |
2128 | } else { | |
2129 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
2130 | count++; | |
2131 | } | |
2132 | } | |
2133 | ||
43a9f66c MS |
2134 | nhg = rib_get_fib_backup_nhg(re); |
2135 | if (nhg) { | |
2136 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2137 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2138 | count++; | |
2139 | } | |
9959f1da MS |
2140 | } |
2141 | ||
2142 | return count; | |
2143 | } | |
2144 | ||
54818e3b MS |
2145 | /* |
2146 | * Handle notification from async dataplane: the dataplane has detected | |
2147 | * some change to a route, and notifies zebra so that the control plane | |
2148 | * can reflect that change. | |
2149 | */ | |
2150 | static void rib_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2151 | { | |
2152 | struct route_node *rn = NULL; | |
efe6c026 | 2153 | struct route_entry *re = NULL; |
bd47f3a3 | 2154 | struct vrf *vrf; |
efe6c026 | 2155 | struct nexthop *nexthop; |
54818e3b | 2156 | const struct prefix *dest_pfx, *src_pfx; |
941e261c | 2157 | rib_dest_t *dest; |
efe6c026 | 2158 | bool fib_changed = false; |
941e261c | 2159 | bool debug_p = IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_RIB; |
efe6c026 | 2160 | int start_count, end_count; |
54818e3b | 2161 | dest_pfx = dplane_ctx_get_dest(ctx); |
bd47f3a3 | 2162 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
54818e3b | 2163 | |
54818e3b MS |
2164 | /* Locate rn and re(s) from ctx */ |
2165 | rn = rib_find_rn_from_ctx(ctx); | |
2166 | if (rn == NULL) { | |
941e261c | 2167 | if (debug_p) { |
bd47f3a3 | 2168 | zlog_debug( |
2919eea8 | 2169 | "Failed to process dplane notification: no routes for %s(%u:%u):%pFX", |
bd47f3a3 | 2170 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2171 | dplane_ctx_get_table(ctx), dest_pfx); |
54818e3b MS |
2172 | } |
2173 | goto done; | |
2174 | } | |
2175 | ||
941e261c | 2176 | dest = rib_dest_from_rnode(rn); |
54818e3b MS |
2177 | srcdest_rnode_prefixes(rn, &dest_pfx, &src_pfx); |
2178 | ||
efe6c026 | 2179 | if (debug_p) |
2919eea8 | 2180 | zlog_debug("%s(%u:%u):%pFX Processing dplane notif ctx %p", |
c2c02b76 | 2181 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2182 | dplane_ctx_get_table(ctx), dest_pfx, ctx); |
54818e3b MS |
2183 | |
2184 | /* | |
2185 | * Take a pass through the routes, look for matches with the context | |
2186 | * info. | |
2187 | */ | |
efe6c026 MS |
2188 | RNODE_FOREACH_RE(rn, re) { |
2189 | if (rib_route_match_ctx(re, ctx, false /*!update*/)) | |
54818e3b MS |
2190 | break; |
2191 | } | |
2192 | ||
2193 | /* No match? Nothing we can do */ | |
2194 | if (re == NULL) { | |
941e261c | 2195 | if (debug_p) |
bd47f3a3 | 2196 | zlog_debug( |
2919eea8 | 2197 | "%s(%u:%u):%pFX Unable to process dplane notification: no entry for type %s", |
bd47f3a3 | 2198 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2199 | dplane_ctx_get_table(ctx), dest_pfx, |
bd47f3a3 | 2200 | zebra_route_string(dplane_ctx_get_type(ctx))); |
54818e3b MS |
2201 | |
2202 | goto done; | |
2203 | } | |
2204 | ||
272e8903 | 2205 | /* Ensure we clear the QUEUED flag */ |
e4876266 DS |
2206 | if (!zrouter.asic_offloaded) |
2207 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); | |
272e8903 | 2208 | |
4c0b5436 MS |
2209 | /* Is this a notification that ... matters? We mostly care about |
2210 | * the route that is currently selected for installation; we may also | |
2211 | * get an un-install notification, and handle that too. | |
941e261c MS |
2212 | */ |
2213 | if (re != dest->selected_fib) { | |
4c0b5436 MS |
2214 | /* |
2215 | * If we need to, clean up after a delete that was part of | |
2216 | * an update operation. | |
941e261c | 2217 | */ |
4c0b5436 MS |
2218 | end_count = 0; |
2219 | for (ALL_NEXTHOPS_PTR(dplane_ctx_get_ng(ctx), nexthop)) { | |
2220 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2221 | end_count++; | |
2222 | } | |
2223 | ||
2224 | /* If no nexthops or none installed, ensure that this re | |
2225 | * gets its 'installed' flag cleared. | |
2226 | */ | |
2227 | if (end_count == 0) { | |
2228 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) | |
2229 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2230 | if (debug_p) | |
bd47f3a3 | 2231 | zlog_debug( |
2919eea8 | 2232 | "%s(%u:%u):%pFX dplane notif, uninstalled type %s route", |
bd47f3a3 | 2233 | VRF_LOGNAME(vrf), |
c2c02b76 | 2234 | dplane_ctx_get_vrf(ctx), |
2919eea8 | 2235 | dplane_ctx_get_table(ctx), dest_pfx, |
bd47f3a3 JU |
2236 | zebra_route_string( |
2237 | dplane_ctx_get_type(ctx))); | |
4c0b5436 MS |
2238 | } else { |
2239 | /* At least report on the event. */ | |
2240 | if (debug_p) | |
bd47f3a3 | 2241 | zlog_debug( |
2919eea8 | 2242 | "%s(%u:%u):%pFX dplane notif, but type %s not selected_fib", |
bd47f3a3 | 2243 | VRF_LOGNAME(vrf), |
c2c02b76 | 2244 | dplane_ctx_get_vrf(ctx), |
2919eea8 | 2245 | dplane_ctx_get_table(ctx), dest_pfx, |
bd47f3a3 JU |
2246 | zebra_route_string( |
2247 | dplane_ctx_get_type(ctx))); | |
4c0b5436 | 2248 | } |
941e261c MS |
2249 | goto done; |
2250 | } | |
2251 | ||
efe6c026 MS |
2252 | /* We'll want to determine whether the installation status of the |
2253 | * route has changed: we'll check the status before processing, | |
2254 | * and then again if there's been a change. | |
2255 | */ | |
2256 | start_count = 0; | |
1c30d64b | 2257 | |
9959f1da MS |
2258 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) |
2259 | start_count = rib_count_installed_nh(re); | |
efe6c026 | 2260 | |
54818e3b MS |
2261 | /* Update zebra's nexthop FIB flags based on the context struct's |
2262 | * nexthops. | |
2263 | */ | |
efe6c026 | 2264 | fib_changed = rib_update_re_from_ctx(re, rn, ctx); |
54818e3b | 2265 | |
efe6c026 MS |
2266 | if (!fib_changed) { |
2267 | if (debug_p) | |
bd47f3a3 | 2268 | zlog_debug( |
2919eea8 | 2269 | "%s(%u:%u):%pFX dplane notification: rib_update returns FALSE", |
bd47f3a3 | 2270 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2271 | dplane_ctx_get_table(ctx), dest_pfx); |
54818e3b MS |
2272 | } |
2273 | ||
188a00e0 MS |
2274 | /* |
2275 | * Perform follow-up work if the actual status of the prefix | |
efe6c026 | 2276 | * changed. |
941e261c | 2277 | */ |
9959f1da | 2278 | end_count = rib_count_installed_nh(re); |
941e261c | 2279 | |
188a00e0 MS |
2280 | /* Various fib transitions: changed nexthops; from installed to |
2281 | * not-installed; or not-installed to installed. | |
efe6c026 | 2282 | */ |
188a00e0 | 2283 | if (start_count > 0 && end_count > 0) { |
11260e70 | 2284 | if (debug_p) |
bd47f3a3 | 2285 | zlog_debug( |
2919eea8 | 2286 | "%s(%u:%u):%pFX applied nexthop changes from dplane notification", |
bd47f3a3 | 2287 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2288 | dplane_ctx_get_table(ctx), dest_pfx); |
188a00e0 MS |
2289 | |
2290 | /* Changed nexthops - update kernel/others */ | |
2291 | dplane_route_notif_update(rn, re, | |
2292 | DPLANE_OP_ROUTE_UPDATE, ctx); | |
2293 | ||
2294 | } else if (start_count == 0 && end_count > 0) { | |
efe6c026 | 2295 | if (debug_p) |
bd47f3a3 | 2296 | zlog_debug( |
2919eea8 | 2297 | "%s(%u:%u):%pFX installed transition from dplane notification", |
bd47f3a3 | 2298 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2299 | dplane_ctx_get_table(ctx), dest_pfx); |
efe6c026 MS |
2300 | |
2301 | /* We expect this to be the selected route, so we want | |
272e8903 | 2302 | * to tell others about this transition. |
efe6c026 MS |
2303 | */ |
2304 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2305 | ||
188a00e0 | 2306 | /* Changed nexthops - update kernel/others */ |
9959f1da | 2307 | dplane_route_notif_update(rn, re, DPLANE_OP_ROUTE_UPDATE, ctx); |
188a00e0 | 2308 | |
efe6c026 MS |
2309 | /* Redistribute, lsp, and nht update */ |
2310 | redistribute_update(dest_pfx, src_pfx, re, NULL); | |
2311 | ||
efe6c026 MS |
2312 | } else if (start_count > 0 && end_count == 0) { |
2313 | if (debug_p) | |
bd47f3a3 | 2314 | zlog_debug( |
2919eea8 | 2315 | "%s(%u:%u):%pFX un-installed transition from dplane notification", |
bd47f3a3 | 2316 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2317 | dplane_ctx_get_table(ctx), dest_pfx); |
efe6c026 MS |
2318 | |
2319 | /* Transition from _something_ installed to _nothing_ | |
2320 | * installed. | |
2321 | */ | |
2322 | /* We expect this to be the selected route, so we want | |
2323 | * to tell others about this transistion. | |
2324 | */ | |
2325 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2326 | ||
188a00e0 MS |
2327 | /* Changed nexthops - update kernel/others */ |
2328 | dplane_route_notif_update(rn, re, DPLANE_OP_ROUTE_DELETE, ctx); | |
2329 | ||
efe6c026 | 2330 | /* Redistribute, lsp, and nht update */ |
40f321c0 | 2331 | redistribute_delete(dest_pfx, src_pfx, re, NULL); |
9287b4c5 | 2332 | } |
efe6c026 | 2333 | |
9287b4c5 MS |
2334 | /* Make any changes visible for lsp and nexthop-tracking processing */ |
2335 | zebra_rib_evaluate_rn_nexthops( | |
2336 | rn, zebra_router_get_next_sequence()); | |
efe6c026 | 2337 | |
9287b4c5 | 2338 | zebra_rib_evaluate_mpls(rn); |
941e261c | 2339 | |
54818e3b | 2340 | done: |
941e261c MS |
2341 | if (rn) |
2342 | route_unlock_node(rn); | |
2343 | ||
54818e3b MS |
2344 | /* Return context to dataplane module */ |
2345 | dplane_ctx_fini(&ctx); | |
2346 | } | |
2347 | ||
32367e7a MS |
2348 | /* |
2349 | * Process a node from the EVPN/VXLAN subqueue. | |
2350 | */ | |
2351 | static void process_subq_evpn(struct listnode *lnode) | |
2352 | { | |
2353 | struct wq_evpn_wrapper *w; | |
2354 | ||
2355 | /* In general, the list node points to a wrapper object | |
2356 | * holding the info necessary to make some update. | |
2357 | */ | |
2358 | w = listgetdata(lnode); | |
2359 | if (!w) | |
2360 | return; | |
2361 | ||
2362 | if (w->type == WQ_EVPN_WRAPPER_TYPE_VRFROUTE) { | |
2363 | if (w->add_p) | |
7f7e49d1 | 2364 | zebra_vxlan_evpn_vrf_route_add(w->vrf_id, &w->macaddr, |
32367e7a MS |
2365 | &w->ip, &w->prefix); |
2366 | else | |
2367 | zebra_vxlan_evpn_vrf_route_del(w->vrf_id, &w->ip, | |
2368 | &w->prefix); | |
2369 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_ES) { | |
2370 | if (w->add_p) | |
2371 | zebra_evpn_remote_es_add(&w->esi, w->ip.ipaddr_v4, | |
2372 | w->esr_rxed, w->df_alg, | |
2373 | w->df_pref); | |
2374 | else | |
2375 | zebra_evpn_remote_es_del(&w->esi, w->ip.ipaddr_v4); | |
7f7e49d1 MS |
2376 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_MACIP) { |
2377 | uint16_t ipa_len = 0; | |
2378 | ||
2379 | if (w->ip.ipa_type == IPADDR_V4) | |
2380 | ipa_len = IPV4_MAX_BYTELEN; | |
2381 | else if (w->ip.ipa_type == IPADDR_V6) | |
2382 | ipa_len = IPV6_MAX_BYTELEN; | |
2383 | ||
2384 | if (w->add_p) | |
2385 | zebra_evpn_rem_macip_add(w->vni, &w->macaddr, ipa_len, | |
2386 | &w->ip, w->flags, w->seq, | |
2387 | w->vtep_ip, &w->esi); | |
2388 | else | |
2389 | zebra_evpn_rem_macip_del(w->vni, &w->macaddr, ipa_len, | |
2390 | &w->ip, w->vtep_ip); | |
7e5b0b2b MS |
2391 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_VTEP) { |
2392 | if (w->add_p) | |
2393 | zebra_vxlan_remote_vtep_add(w->vrf_id, w->vni, | |
2394 | w->vtep_ip, w->flags); | |
2395 | else | |
2396 | zebra_vxlan_remote_vtep_del(w->vrf_id, w->vni, | |
2397 | w->vtep_ip); | |
32367e7a MS |
2398 | } |
2399 | ||
7e5b0b2b | 2400 | |
32367e7a MS |
2401 | XFREE(MTYPE_WQ_WRAPPER, w); |
2402 | } | |
2403 | ||
04bec7b2 MS |
2404 | /* |
2405 | * Process the nexthop-group workqueue subqueue | |
2406 | */ | |
e22e8001 | 2407 | static void process_subq_nhg(struct listnode *lnode) |
e96f9203 | 2408 | { |
04bec7b2 MS |
2409 | struct nhg_ctx *ctx; |
2410 | struct nhg_hash_entry *nhe, *newnhe; | |
2411 | struct wq_nhg_wrapper *w; | |
e22e8001 | 2412 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; |
5110a0c6 | 2413 | |
04bec7b2 | 2414 | w = listgetdata(lnode); |
e22e8001 | 2415 | |
04bec7b2 | 2416 | if (!w) |
e22e8001 SW |
2417 | return; |
2418 | ||
04bec7b2 MS |
2419 | /* Two types of object - an update from the local kernel, or |
2420 | * an nhg update from a daemon. | |
2421 | */ | |
2422 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) { | |
2423 | ctx = w->u.ctx; | |
2424 | ||
2425 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2426 | zlog_debug( | |
2427 | "NHG Context id=%u dequeued from sub-queue %u", | |
2428 | ctx->id, qindex); | |
2429 | ||
2430 | ||
2431 | /* Process nexthop group updates coming 'up' from the OS */ | |
2432 | nhg_ctx_process(ctx); | |
e22e8001 | 2433 | |
04bec7b2 MS |
2434 | } else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) { |
2435 | nhe = w->u.nhe; | |
2436 | ||
2437 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2438 | zlog_debug("NHG %u dequeued from sub-queue %u", | |
2439 | nhe->id, qindex); | |
2440 | ||
2441 | /* Process incoming nhg update, probably from a proto daemon */ | |
2442 | newnhe = zebra_nhg_proto_add(nhe->id, nhe->type, | |
2443 | nhe->zapi_instance, | |
32367e7a | 2444 | nhe->zapi_session, &nhe->nhg, 0); |
04bec7b2 MS |
2445 | |
2446 | /* Report error to daemon via ZAPI */ | |
2447 | if (newnhe == NULL) | |
2448 | zsend_nhg_notify(nhe->type, nhe->zapi_instance, | |
2449 | nhe->zapi_session, nhe->id, | |
2450 | ZAPI_NHG_FAIL_INSTALL); | |
2451 | ||
2452 | /* Free temp nhe - we own that memory. */ | |
2453 | zebra_nhg_free(nhe); | |
2454 | } | |
e22e8001 | 2455 | |
32367e7a | 2456 | XFREE(MTYPE_WQ_WRAPPER, w); |
e22e8001 SW |
2457 | } |
2458 | ||
2459 | static void process_subq_route(struct listnode *lnode, uint8_t qindex) | |
2460 | { | |
2461 | struct route_node *rnode = NULL; | |
2462 | rib_dest_t *dest = NULL; | |
2463 | struct zebra_vrf *zvrf = NULL; | |
5110a0c6 | 2464 | |
d62a17ae | 2465 | rnode = listgetdata(lnode); |
2466 | dest = rib_dest_from_rnode(rnode); | |
c2c02b76 DS |
2467 | assert(dest); |
2468 | ||
2469 | zvrf = rib_dest_vrf(dest); | |
41ec9222 | 2470 | |
d62a17ae | 2471 | rib_process(rnode); |
5110a0c6 | 2472 | |
d62a17ae | 2473 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
7e26b9d4 | 2474 | struct route_entry *re = NULL; |
d62a17ae | 2475 | char buf[SRCDEST2STR_BUFFER]; |
efe6c026 | 2476 | |
7e26b9d4 DS |
2477 | /* |
2478 | * rib_process may have freed the dest | |
2479 | * as part of the garbage collection. Let's | |
2480 | * prevent stupidity from happening. | |
2481 | */ | |
2482 | dest = rib_dest_from_rnode(rnode); | |
2483 | if (dest) | |
2484 | re = re_list_first(&dest->routes); | |
2485 | ||
d62a17ae | 2486 | srcdest_rnode2str(rnode, buf, sizeof(buf)); |
c2c02b76 | 2487 | zlog_debug("%s(%u:%u):%s: rn %p dequeued from sub-queue %u", |
04bec7b2 MS |
2488 | zvrf_name(zvrf), zvrf_id(zvrf), re ? re->table : 0, |
2489 | buf, rnode, qindex); | |
d62a17ae | 2490 | } |
41ec9222 | 2491 | |
d62a17ae | 2492 | if (rnode->info) |
2493 | UNSET_FLAG(rib_dest_from_rnode(rnode)->flags, | |
2494 | RIB_ROUTE_QUEUED(qindex)); | |
9fd92e3c | 2495 | |
d62a17ae | 2496 | route_unlock_node(rnode); |
e22e8001 SW |
2497 | } |
2498 | ||
32367e7a MS |
2499 | /* |
2500 | * Examine the specified subqueue; process one entry and return 1 if | |
2501 | * there is a node, return 0 otherwise. | |
e22e8001 SW |
2502 | */ |
2503 | static unsigned int process_subq(struct list *subq, uint8_t qindex) | |
2504 | { | |
2505 | struct listnode *lnode = listhead(subq); | |
2506 | ||
2507 | if (!lnode) | |
2508 | return 0; | |
2509 | ||
32367e7a MS |
2510 | if (qindex == META_QUEUE_EVPN) |
2511 | process_subq_evpn(lnode); | |
2512 | else if (qindex == route_info[ZEBRA_ROUTE_NHG].meta_q_map) | |
e22e8001 SW |
2513 | process_subq_nhg(lnode); |
2514 | else | |
2515 | process_subq_route(lnode, qindex); | |
2516 | ||
d62a17ae | 2517 | list_delete_node(subq, lnode); |
e22e8001 | 2518 | |
d62a17ae | 2519 | return 1; |
e96f9203 DO |
2520 | } |
2521 | ||
32367e7a | 2522 | /* Dispatch the meta queue by picking and processing the next node from |
d62a17ae | 2523 | * a non-empty sub-queue with lowest priority. wq is equal to zebra->ribq and |
04bec7b2 | 2524 | * data is pointed to the meta queue structure. |
e96f9203 | 2525 | */ |
d62a17ae | 2526 | static wq_item_status meta_queue_process(struct work_queue *dummy, void *data) |
e96f9203 | 2527 | { |
d62a17ae | 2528 | struct meta_queue *mq = data; |
2529 | unsigned i; | |
91f16812 MS |
2530 | uint32_t queue_len, queue_limit; |
2531 | ||
2532 | /* Ensure there's room for more dataplane updates */ | |
2533 | queue_limit = dplane_get_in_queue_limit(); | |
2534 | queue_len = dplane_get_in_queue_len(); | |
2535 | if (queue_len > queue_limit) { | |
2536 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
8b962e77 MS |
2537 | zlog_debug("rib queue: dplane queue len %u, limit %u, retrying", |
2538 | queue_len, queue_limit); | |
91f16812 MS |
2539 | |
2540 | /* Ensure that the meta-queue is actually enqueued */ | |
489a9614 | 2541 | if (work_queue_empty(zrouter.ribq)) |
ea45a4e7 | 2542 | work_queue_add(zrouter.ribq, zrouter.mq); |
91f16812 MS |
2543 | |
2544 | return WQ_QUEUE_BLOCKED; | |
2545 | } | |
5110a0c6 | 2546 | |
d62a17ae | 2547 | for (i = 0; i < MQ_SIZE; i++) |
2548 | if (process_subq(mq->subq[i], i)) { | |
2549 | mq->size--; | |
2550 | break; | |
2551 | } | |
2552 | return mq->size ? WQ_REQUEUE : WQ_SUCCESS; | |
e96f9203 DO |
2553 | } |
2554 | ||
f52ed677 DS |
2555 | |
2556 | /* | |
2557 | * Look into the RN and queue it into the highest priority queue | |
2558 | * at this point in time for processing. | |
2559 | * | |
2560 | * We will enqueue a route node only once per invocation. | |
2561 | * | |
2562 | * There are two possibilities here that should be kept in mind. | |
2563 | * If the original invocation has not been pulled off for processing | |
2564 | * yet, A subsuquent invocation can have a route entry with a better | |
2565 | * meta queue index value and we can have a situation where | |
2566 | * we might have the same node enqueued 2 times. Not necessarily | |
2567 | * an optimal situation but it should be ok. | |
2568 | * | |
2569 | * The other possibility is that the original invocation has not | |
2570 | * been pulled off for processing yet, A subsusquent invocation | |
2571 | * doesn't have a route_entry with a better meta-queue and the | |
2572 | * original metaqueue index value will win and we'll end up with | |
2573 | * the route node enqueued once. | |
e96f9203 | 2574 | */ |
e22e8001 | 2575 | static int rib_meta_queue_add(struct meta_queue *mq, void *data) |
e96f9203 | 2576 | { |
e22e8001 | 2577 | struct route_node *rn = NULL; |
f52ed677 DS |
2578 | struct route_entry *re = NULL, *curr_re = NULL; |
2579 | uint8_t qindex = MQ_SIZE, curr_qindex = MQ_SIZE; | |
5110a0c6 | 2580 | |
e22e8001 SW |
2581 | rn = (struct route_node *)data; |
2582 | ||
f52ed677 DS |
2583 | RNODE_FOREACH_RE (rn, curr_re) { |
2584 | curr_qindex = route_info[curr_re->type].meta_q_map; | |
d62a17ae | 2585 | |
f52ed677 DS |
2586 | if (curr_qindex <= qindex) { |
2587 | re = curr_re; | |
2588 | qindex = curr_qindex; | |
d62a17ae | 2589 | } |
f52ed677 | 2590 | } |
5110a0c6 | 2591 | |
f52ed677 | 2592 | if (!re) |
e22e8001 | 2593 | return -1; |
5110a0c6 | 2594 | |
f52ed677 DS |
2595 | /* Invariant: at this point we always have rn->info set. */ |
2596 | if (CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
2597 | RIB_ROUTE_QUEUED(qindex))) { | |
d62a17ae | 2598 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
2599 | rnode_debug(rn, re->vrf_id, | |
f52ed677 | 2600 | "rn %p is already queued in sub-queue %u", |
d62a17ae | 2601 | (void *)rn, qindex); |
e22e8001 | 2602 | return -1; |
d62a17ae | 2603 | } |
f52ed677 DS |
2604 | |
2605 | SET_FLAG(rib_dest_from_rnode(rn)->flags, RIB_ROUTE_QUEUED(qindex)); | |
2606 | listnode_add(mq->subq[qindex], rn); | |
2607 | route_lock_node(rn); | |
2608 | mq->size++; | |
2609 | ||
2610 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2611 | rnode_debug(rn, re->vrf_id, "queued rn %p into sub-queue %u", | |
2612 | (void *)rn, qindex); | |
e22e8001 SW |
2613 | |
2614 | return 0; | |
4d38fdb4 | 2615 | } |
2616 | ||
04bec7b2 | 2617 | static int rib_meta_queue_nhg_ctx_add(struct meta_queue *mq, void *data) |
4d38fdb4 | 2618 | { |
e22e8001 SW |
2619 | struct nhg_ctx *ctx = NULL; |
2620 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; | |
04bec7b2 | 2621 | struct wq_nhg_wrapper *w; |
fc328ac9 | 2622 | |
e22e8001 SW |
2623 | ctx = (struct nhg_ctx *)data; |
2624 | ||
2625 | if (!ctx) | |
2626 | return -1; | |
4d38fdb4 | 2627 | |
32367e7a | 2628 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); |
04bec7b2 MS |
2629 | |
2630 | w->type = WQ_NHG_WRAPPER_TYPE_CTX; | |
2631 | w->u.ctx = ctx; | |
2632 | ||
2633 | listnode_add(mq->subq[qindex], w); | |
e22e8001 SW |
2634 | mq->size++; |
2635 | ||
2636 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2637 | zlog_debug("NHG Context id=%u queued into sub-queue %u", | |
2638 | ctx->id, qindex); | |
2639 | ||
2640 | return 0; | |
2641 | } | |
2642 | ||
04bec7b2 MS |
2643 | static int rib_meta_queue_nhg_add(struct meta_queue *mq, void *data) |
2644 | { | |
2645 | struct nhg_hash_entry *nhe = NULL; | |
2646 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; | |
2647 | struct wq_nhg_wrapper *w; | |
2648 | ||
2649 | nhe = (struct nhg_hash_entry *)data; | |
2650 | ||
2651 | if (!nhe) | |
2652 | return -1; | |
2653 | ||
32367e7a | 2654 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); |
04bec7b2 MS |
2655 | |
2656 | w->type = WQ_NHG_WRAPPER_TYPE_NHG; | |
2657 | w->u.nhe = nhe; | |
2658 | ||
2659 | listnode_add(mq->subq[qindex], w); | |
2660 | mq->size++; | |
2661 | ||
2662 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2663 | zlog_debug("NHG id=%u queued into sub-queue %u", | |
2664 | nhe->id, qindex); | |
2665 | ||
2666 | return 0; | |
2667 | } | |
2668 | ||
32367e7a MS |
2669 | static int rib_meta_queue_evpn_add(struct meta_queue *mq, void *data) |
2670 | { | |
2671 | listnode_add(mq->subq[META_QUEUE_EVPN], data); | |
2672 | mq->size++; | |
2673 | ||
2674 | return 0; | |
2675 | } | |
2676 | ||
e22e8001 SW |
2677 | static int mq_add_handler(void *data, |
2678 | int (*mq_add_func)(struct meta_queue *mq, void *data)) | |
2679 | { | |
489a9614 | 2680 | if (zrouter.ribq == NULL) { |
e914ccbe | 2681 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 2682 | "%s: work_queue does not exist!", __func__); |
e22e8001 | 2683 | return -1; |
d62a17ae | 2684 | } |
2685 | ||
2686 | /* | |
2687 | * The RIB queue should normally be either empty or holding the only | |
2688 | * work_queue_item element. In the latter case this element would | |
2689 | * hold a pointer to the meta queue structure, which must be used to | |
2690 | * actually queue the route nodes to process. So create the MQ | |
2691 | * holder, if necessary, then push the work into it in any case. | |
2692 | * This semantics was introduced after 0.99.9 release. | |
2693 | */ | |
489a9614 | 2694 | if (work_queue_empty(zrouter.ribq)) |
ea45a4e7 | 2695 | work_queue_add(zrouter.ribq, zrouter.mq); |
e96f9203 | 2696 | |
e22e8001 SW |
2697 | return mq_add_func(zrouter.mq, data); |
2698 | } | |
fc328ac9 | 2699 | |
e22e8001 SW |
2700 | /* Add route_node to work queue and schedule processing */ |
2701 | int rib_queue_add(struct route_node *rn) | |
2702 | { | |
2703 | assert(rn); | |
2704 | ||
2705 | /* Pointless to queue a route_node with no RIB entries to add or remove | |
2706 | */ | |
2707 | if (!rnode_to_ribs(rn)) { | |
c10e14e9 DS |
2708 | zlog_debug("%s: called for route_node (%p, %u) with no ribs", |
2709 | __func__, (void *)rn, route_node_get_lock_count(rn)); | |
e22e8001 SW |
2710 | zlog_backtrace(LOG_DEBUG); |
2711 | return -1; | |
2712 | } | |
2713 | ||
04bec7b2 | 2714 | return mq_add_handler(rn, rib_meta_queue_add); |
e22e8001 SW |
2715 | } |
2716 | ||
04bec7b2 MS |
2717 | /* |
2718 | * Enqueue incoming nhg info from OS for processing | |
2719 | */ | |
2720 | int rib_queue_nhg_ctx_add(struct nhg_ctx *ctx) | |
e22e8001 SW |
2721 | { |
2722 | assert(ctx); | |
2723 | ||
04bec7b2 MS |
2724 | return mq_add_handler(ctx, rib_meta_queue_nhg_ctx_add); |
2725 | } | |
2726 | ||
2727 | /* | |
2728 | * Enqueue incoming nhg from proto daemon for processing | |
2729 | */ | |
2730 | int rib_queue_nhe_add(struct nhg_hash_entry *nhe) | |
2731 | { | |
2732 | if (nhe == NULL) | |
2733 | return -1; | |
2734 | ||
2735 | return mq_add_handler(nhe, rib_meta_queue_nhg_add); | |
2736 | } | |
2737 | ||
32367e7a MS |
2738 | /* |
2739 | * Enqueue evpn route for processing | |
2740 | */ | |
2741 | int zebra_rib_queue_evpn_route_add(vrf_id_t vrf_id, const struct ethaddr *rmac, | |
2742 | const struct ipaddr *vtep_ip, | |
2743 | const struct prefix *host_prefix) | |
2744 | { | |
2745 | struct wq_evpn_wrapper *w; | |
2746 | ||
2747 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2748 | ||
2749 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
2750 | w->add_p = true; | |
2751 | w->vrf_id = vrf_id; | |
7f7e49d1 | 2752 | w->macaddr = *rmac; |
32367e7a MS |
2753 | w->ip = *vtep_ip; |
2754 | w->prefix = *host_prefix; | |
2755 | ||
2756 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2757 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
2758 | vrf_id, vtep_ip, host_prefix); | |
2759 | ||
2760 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2761 | } | |
2762 | ||
2763 | int zebra_rib_queue_evpn_route_del(vrf_id_t vrf_id, | |
2764 | const struct ipaddr *vtep_ip, | |
2765 | const struct prefix *host_prefix) | |
2766 | { | |
2767 | struct wq_evpn_wrapper *w; | |
2768 | ||
2769 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2770 | ||
2771 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
2772 | w->add_p = false; | |
2773 | w->vrf_id = vrf_id; | |
2774 | w->ip = *vtep_ip; | |
2775 | w->prefix = *host_prefix; | |
2776 | ||
2777 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2778 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
2779 | vrf_id, vtep_ip, host_prefix); | |
2780 | ||
2781 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2782 | } | |
2783 | ||
2784 | /* Enqueue EVPN remote ES for processing */ | |
2785 | int zebra_rib_queue_evpn_rem_es_add(const esi_t *esi, | |
2786 | const struct in_addr *vtep_ip, | |
2787 | bool esr_rxed, uint8_t df_alg, | |
2788 | uint16_t df_pref) | |
2789 | { | |
2790 | struct wq_evpn_wrapper *w; | |
2791 | char buf[ESI_STR_LEN]; | |
2792 | ||
2793 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2794 | ||
2795 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
2796 | w->add_p = true; | |
2797 | w->esi = *esi; | |
2798 | w->ip.ipa_type = IPADDR_V4; | |
2799 | w->ip.ipaddr_v4 = *vtep_ip; | |
2800 | w->esr_rxed = esr_rxed; | |
2801 | w->df_alg = df_alg; | |
2802 | w->df_pref = df_pref; | |
2803 | ||
2804 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2805 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
2806 | esi_to_str(esi, buf, sizeof(buf))); | |
2807 | ||
2808 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2809 | } | |
2810 | ||
2811 | int zebra_rib_queue_evpn_rem_es_del(const esi_t *esi, | |
2812 | const struct in_addr *vtep_ip) | |
2813 | { | |
2814 | struct wq_evpn_wrapper *w; | |
2815 | char buf[ESI_STR_LEN]; | |
2816 | ||
2817 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2818 | ||
2819 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
2820 | w->add_p = false; | |
2821 | w->esi = *esi; | |
2822 | w->ip.ipa_type = IPADDR_V4; | |
2823 | w->ip.ipaddr_v4 = *vtep_ip; | |
2824 | ||
2825 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
2826 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
2827 | esi_to_str(esi, buf, sizeof(buf)); | |
2828 | else | |
2829 | strlcpy(buf, "-", sizeof(buf)); | |
2830 | ||
2831 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
2832 | buf); | |
2833 | } | |
2834 | ||
2835 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2836 | } | |
2837 | ||
7f7e49d1 MS |
2838 | /* |
2839 | * Enqueue EVPN remote macip update for processing | |
2840 | */ | |
2841 | int zebra_rib_queue_evpn_rem_macip_add(vni_t vni, const struct ethaddr *macaddr, | |
2842 | const struct ipaddr *ipaddr, | |
2843 | uint8_t flags, uint32_t seq, | |
2844 | struct in_addr vtep_ip, const esi_t *esi) | |
2845 | { | |
2846 | struct wq_evpn_wrapper *w; | |
2847 | char buf[ESI_STR_LEN]; | |
2848 | ||
2849 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2850 | ||
2851 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
2852 | w->add_p = true; | |
2853 | w->vni = vni; | |
2854 | w->macaddr = *macaddr; | |
2855 | w->ip = *ipaddr; | |
2856 | w->flags = flags; | |
2857 | w->seq = seq; | |
2858 | w->vtep_ip = vtep_ip; | |
2859 | w->esi = *esi; | |
2860 | ||
2861 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
2862 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
2863 | esi_to_str(esi, buf, sizeof(buf)); | |
2864 | else | |
2865 | strlcpy(buf, "-", sizeof(buf)); | |
2866 | ||
2867 | zlog_debug("%s: mac %pEA, vtep %pI4, esi %s enqueued", __func__, | |
2868 | macaddr, &vtep_ip, buf); | |
2869 | } | |
2870 | ||
2871 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2872 | } | |
2873 | ||
2874 | int zebra_rib_queue_evpn_rem_macip_del(vni_t vni, const struct ethaddr *macaddr, | |
2875 | const struct ipaddr *ip, | |
2876 | struct in_addr vtep_ip) | |
2877 | { | |
2878 | struct wq_evpn_wrapper *w; | |
2879 | ||
2880 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2881 | ||
2882 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
2883 | w->add_p = false; | |
2884 | w->vni = vni; | |
2885 | w->macaddr = *macaddr; | |
2886 | w->ip = *ip; | |
2887 | w->vtep_ip = vtep_ip; | |
2888 | ||
2889 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2890 | zlog_debug("%s: mac %pEA, vtep %pI4 enqueued", __func__, | |
2891 | macaddr, &vtep_ip); | |
2892 | ||
2893 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2894 | } | |
2895 | ||
7e5b0b2b MS |
2896 | /* |
2897 | * Enqueue remote VTEP address for processing | |
2898 | */ | |
2899 | int zebra_rib_queue_evpn_rem_vtep_add(vrf_id_t vrf_id, vni_t vni, | |
2900 | struct in_addr vtep_ip, int flood_control) | |
2901 | { | |
2902 | struct wq_evpn_wrapper *w; | |
2903 | ||
2904 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2905 | ||
2906 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
2907 | w->add_p = true; | |
2908 | w->vrf_id = vrf_id; | |
2909 | w->vni = vni; | |
2910 | w->vtep_ip = vtep_ip; | |
2911 | w->flags = flood_control; | |
2912 | ||
2913 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2914 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
2915 | &vtep_ip); | |
2916 | ||
2917 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2918 | } | |
2919 | ||
2920 | int zebra_rib_queue_evpn_rem_vtep_del(vrf_id_t vrf_id, vni_t vni, | |
2921 | struct in_addr vtep_ip) | |
2922 | { | |
2923 | struct wq_evpn_wrapper *w; | |
2924 | ||
2925 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2926 | ||
2927 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
2928 | w->add_p = false; | |
2929 | w->vrf_id = vrf_id; | |
2930 | w->vni = vni; | |
2931 | w->vtep_ip = vtep_ip; | |
2932 | ||
2933 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2934 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
2935 | &vtep_ip); | |
2936 | ||
2937 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2938 | } | |
2939 | ||
32367e7a MS |
2940 | /* Clean up the EVPN meta-queue list */ |
2941 | static void evpn_meta_queue_free(struct list *l) | |
2942 | { | |
2943 | struct listnode *node; | |
2944 | struct wq_evpn_wrapper *w; | |
2945 | ||
2946 | /* Free the node wrapper object, and the struct it wraps */ | |
2947 | while ((node = listhead(l)) != NULL) { | |
2948 | w = node->data; | |
2949 | node->data = NULL; | |
2950 | ||
2951 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2952 | ||
2953 | list_delete_node(l, node); | |
2954 | } | |
2955 | } | |
2956 | ||
04bec7b2 MS |
2957 | /* Clean up the nhg meta-queue list */ |
2958 | static void nhg_meta_queue_free(struct list *l) | |
2959 | { | |
2960 | struct wq_nhg_wrapper *w; | |
2961 | struct listnode *node; | |
2962 | ||
2963 | /* Free the node wrapper object, and the struct it wraps */ | |
2964 | while ((node = listhead(l)) != NULL) { | |
2965 | w = node->data; | |
2966 | node->data = NULL; | |
2967 | ||
2968 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) | |
2969 | nhg_ctx_free(&w->u.ctx); | |
2970 | else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) | |
2971 | zebra_nhg_free(w->u.nhe); | |
2972 | ||
32367e7a | 2973 | XFREE(MTYPE_WQ_WRAPPER, w); |
04bec7b2 MS |
2974 | |
2975 | list_delete_node(l, node); | |
2976 | } | |
4d38fdb4 | 2977 | } |
2978 | ||
5110a0c6 SH |
2979 | /* Create new meta queue. |
2980 | A destructor function doesn't seem to be necessary here. | |
2981 | */ | |
d62a17ae | 2982 | static struct meta_queue *meta_queue_new(void) |
e96f9203 | 2983 | { |
d62a17ae | 2984 | struct meta_queue *new; |
2985 | unsigned i; | |
5110a0c6 | 2986 | |
d62a17ae | 2987 | new = XCALLOC(MTYPE_WORK_QUEUE, sizeof(struct meta_queue)); |
e96f9203 | 2988 | |
d62a17ae | 2989 | for (i = 0; i < MQ_SIZE; i++) { |
2990 | new->subq[i] = list_new(); | |
2991 | assert(new->subq[i]); | |
2992 | } | |
5110a0c6 | 2993 | |
d62a17ae | 2994 | return new; |
e96f9203 DO |
2995 | } |
2996 | ||
d62a17ae | 2997 | void meta_queue_free(struct meta_queue *mq) |
5a8dfcd8 | 2998 | { |
d62a17ae | 2999 | unsigned i; |
5a8dfcd8 | 3000 | |
04bec7b2 MS |
3001 | for (i = 0; i < MQ_SIZE; i++) { |
3002 | /* Some subqueues may need cleanup - nhgs for example */ | |
3003 | if (i == route_info[ZEBRA_ROUTE_NHG].meta_q_map) | |
3004 | nhg_meta_queue_free(mq->subq[i]); | |
32367e7a MS |
3005 | else if (i == META_QUEUE_EVPN) |
3006 | evpn_meta_queue_free(mq->subq[i]); | |
04bec7b2 | 3007 | |
6a154c88 | 3008 | list_delete(&mq->subq[i]); |
04bec7b2 | 3009 | } |
5a8dfcd8 | 3010 | |
d62a17ae | 3011 | XFREE(MTYPE_WORK_QUEUE, mq); |
5a8dfcd8 RW |
3012 | } |
3013 | ||
4d38fdb4 | 3014 | /* initialise zebra rib work queue */ |
2561d12e | 3015 | static void rib_queue_init(void) |
4d38fdb4 | 3016 | { |
489a9614 DS |
3017 | if (!(zrouter.ribq = work_queue_new(zrouter.master, |
3018 | "route_node processing"))) { | |
e914ccbe | 3019 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3020 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 3021 | return; |
3022 | } | |
4d38fdb4 | 3023 | |
d62a17ae | 3024 | /* fill in the work queue spec */ |
489a9614 DS |
3025 | zrouter.ribq->spec.workfunc = &meta_queue_process; |
3026 | zrouter.ribq->spec.errorfunc = NULL; | |
46a4e345 | 3027 | zrouter.ribq->spec.completion_func = NULL; |
d62a17ae | 3028 | /* XXX: TODO: These should be runtime configurable via vty */ |
489a9614 DS |
3029 | zrouter.ribq->spec.max_retries = 3; |
3030 | zrouter.ribq->spec.hold = ZEBRA_RIB_PROCESS_HOLD_TIME; | |
3031 | zrouter.ribq->spec.retry = ZEBRA_RIB_PROCESS_RETRY_TIME; | |
d62a17ae | 3032 | |
ea45a4e7 | 3033 | if (!(zrouter.mq = meta_queue_new())) { |
e914ccbe | 3034 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3035 | "%s: could not initialise meta queue!", __func__); |
d62a17ae | 3036 | return; |
3037 | } | |
3038 | return; | |
718e3744 | 3039 | } |
3040 | ||
434434f7 DS |
3041 | rib_dest_t *zebra_rib_create_dest(struct route_node *rn) |
3042 | { | |
3043 | rib_dest_t *dest; | |
3044 | ||
3045 | dest = XCALLOC(MTYPE_RIB_DEST, sizeof(rib_dest_t)); | |
aa57abfb | 3046 | rnh_list_init(&dest->nht); |
daaeaa21 | 3047 | re_list_init(&dest->routes); |
434434f7 DS |
3048 | route_lock_node(rn); /* rn route table reference */ |
3049 | rn->info = dest; | |
3050 | dest->rnode = rn; | |
3051 | ||
3052 | return dest; | |
3053 | } | |
3054 | ||
6d691129 PJ |
3055 | /* RIB updates are processed via a queue of pointers to route_nodes. |
3056 | * | |
3057 | * The queue length is bounded by the maximal size of the routing table, | |
3058 | * as a route_node will not be requeued, if already queued. | |
3059 | * | |
f0f77c9a DS |
3060 | * REs are submitted via rib_addnode or rib_delnode which set minimal |
3061 | * state, or static_install_route (when an existing RE is updated) | |
3c0755dc | 3062 | * and then submit route_node to queue for best-path selection later. |
f0f77c9a | 3063 | * Order of add/delete state changes are preserved for any given RE. |
6d691129 | 3064 | * |
f0f77c9a | 3065 | * Deleted REs are reaped during best-path selection. |
6d691129 PJ |
3066 | * |
3067 | * rib_addnode | |
f0f77c9a DS |
3068 | * |-> rib_link or unset ROUTE_ENTRY_REMOVE |->Update kernel with |
3069 | * |-------->| | best RE, if required | |
3c0755dc PJ |
3070 | * | | |
3071 | * static_install->|->rib_addqueue...... -> rib_process | |
3072 | * | | | |
3073 | * |-------->| |-> rib_unlink | |
f0f77c9a DS |
3074 | * |-> set ROUTE_ENTRY_REMOVE | |
3075 | * rib_delnode (RE freed) | |
6d691129 | 3076 | * |
9fd92e3c AS |
3077 | * The 'info' pointer of a route_node points to a rib_dest_t |
3078 | * ('dest'). Queueing state for a route_node is kept on the dest. The | |
3079 | * dest is created on-demand by rib_link() and is kept around at least | |
3080 | * as long as there are ribs hanging off it (@see rib_gc_dest()). | |
d62a17ae | 3081 | * |
32367e7a | 3082 | * Refcounting (aka "locking" throughout the Zebra and FRR code): |
6d691129 PJ |
3083 | * |
3084 | * - route_nodes: refcounted by: | |
9fd92e3c AS |
3085 | * - dest attached to route_node: |
3086 | * - managed by: rib_link/rib_gc_dest | |
6d691129 PJ |
3087 | * - route_node processing queue |
3088 | * - managed by: rib_addqueue, rib_process. | |
3089 | * | |
3090 | */ | |
d62a17ae | 3091 | |
f0f77c9a | 3092 | /* Add RE to head of the route node. */ |
d62a17ae | 3093 | static void rib_link(struct route_node *rn, struct route_entry *re, int process) |
3094 | { | |
d62a17ae | 3095 | rib_dest_t *dest; |
3096 | afi_t afi; | |
3097 | const char *rmap_name; | |
9fd92e3c | 3098 | |
d62a17ae | 3099 | assert(re && rn); |
9fd92e3c | 3100 | |
d62a17ae | 3101 | dest = rib_dest_from_rnode(rn); |
3102 | if (!dest) { | |
3103 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3104 | rnode_debug(rn, re->vrf_id, "rn %p adding dest", rn); | |
7a4bb9c5 | 3105 | |
434434f7 | 3106 | dest = zebra_rib_create_dest(rn); |
d62a17ae | 3107 | } |
2263a412 | 3108 | |
045207e2 | 3109 | re_list_add_head(&dest->routes, re); |
d62a17ae | 3110 | |
3111 | afi = (rn->p.family == AF_INET) | |
3112 | ? AFI_IP | |
3113 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3114 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3115 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3116 | ||
d62a17ae | 3117 | rmap_name = zebra_get_import_table_route_map(afi, re->table); |
fe257ae7 | 3118 | zebra_add_import_table_entry(zvrf, rn, re, rmap_name); |
d62a17ae | 3119 | } else if (process) |
3120 | rib_queue_add(rn); | |
3121 | } | |
3122 | ||
7e24fdf3 DS |
3123 | static void rib_addnode(struct route_node *rn, |
3124 | struct route_entry *re, int process) | |
d62a17ae | 3125 | { |
3126 | /* RE node has been un-removed before route-node is processed. | |
3127 | * route_node must hence already be on the queue for processing.. | |
3128 | */ | |
3129 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
3130 | if (IS_ZEBRA_DEBUG_RIB) | |
3131 | rnode_debug(rn, re->vrf_id, "rn %p, un-removed re %p", | |
3132 | (void *)rn, (void *)re); | |
3133 | ||
3134 | UNSET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3135 | return; | |
3136 | } | |
3137 | rib_link(rn, re, process); | |
6d691129 PJ |
3138 | } |
3139 | ||
9fd92e3c AS |
3140 | /* |
3141 | * rib_unlink | |
3142 | * | |
3143 | * Detach a rib structure from a route_node. | |
3144 | * | |
3145 | * Note that a call to rib_unlink() should be followed by a call to | |
3146 | * rib_gc_dest() at some point. This allows a rib_dest_t that is no | |
3147 | * longer required to be deleted. | |
3148 | */ | |
d62a17ae | 3149 | void rib_unlink(struct route_node *rn, struct route_entry *re) |
6d691129 | 3150 | { |
d62a17ae | 3151 | rib_dest_t *dest; |
9fd92e3c | 3152 | |
d62a17ae | 3153 | assert(rn && re); |
6d691129 | 3154 | |
d62a17ae | 3155 | if (IS_ZEBRA_DEBUG_RIB) |
3156 | rnode_debug(rn, re->vrf_id, "rn %p, re %p", (void *)rn, | |
3157 | (void *)re); | |
6d691129 | 3158 | |
d62a17ae | 3159 | dest = rib_dest_from_rnode(rn); |
6d691129 | 3160 | |
045207e2 | 3161 | re_list_del(&dest->routes, re); |
7a4bb9c5 | 3162 | |
2eb07de3 DS |
3163 | if (dest->selected_fib == re) |
3164 | dest->selected_fib = NULL; | |
3165 | ||
1d48702e MS |
3166 | if (re->nhe && re->nhe_id) { |
3167 | assert(re->nhe->id == re->nhe_id); | |
3168 | zebra_nhg_decrement_ref(re->nhe); | |
3169 | } else if (re->nhe && re->nhe->nhg.nexthop) | |
c415d895 | 3170 | nexthops_free(re->nhe->nhg.nexthop); |
22bcedb2 | 3171 | |
ee5e8a48 MS |
3172 | nexthops_free(re->fib_ng.nexthop); |
3173 | ||
224ccf29 | 3174 | zapi_opaque_free(re->opaque); |
a29a6001 | 3175 | |
d62a17ae | 3176 | XFREE(MTYPE_RE, re); |
3177 | } | |
3178 | ||
3179 | void rib_delnode(struct route_node *rn, struct route_entry *re) | |
3180 | { | |
3181 | afi_t afi; | |
3182 | ||
3183 | if (IS_ZEBRA_DEBUG_RIB) | |
3184 | rnode_debug(rn, re->vrf_id, "rn %p, re %p, removing", | |
3185 | (void *)rn, (void *)re); | |
3186 | SET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3187 | ||
3188 | afi = (rn->p.family == AF_INET) | |
3189 | ? AFI_IP | |
3190 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3191 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3192 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3193 | ||
3194 | zebra_del_import_table_entry(zvrf, rn, re); | |
d62a17ae | 3195 | /* Just clean up if non main table */ |
3196 | if (IS_ZEBRA_DEBUG_RIB) { | |
3197 | char buf[SRCDEST2STR_BUFFER]; | |
3198 | srcdest_rnode2str(rn, buf, sizeof(buf)); | |
bd47f3a3 JU |
3199 | zlog_debug("%s(%u):%s: Freeing route rn %p, re %p (%s)", |
3200 | vrf_id_to_name(re->vrf_id), re->vrf_id, buf, | |
3201 | rn, re, zebra_route_string(re->type)); | |
d62a17ae | 3202 | } |
7a4bb9c5 | 3203 | |
d62a17ae | 3204 | rib_unlink(rn, re); |
3205 | } else { | |
3206 | rib_queue_add(rn); | |
3207 | } | |
718e3744 | 3208 | } |
3209 | ||
6d81b590 MS |
3210 | /* |
3211 | * Helper that debugs a single nexthop within a route-entry | |
3212 | */ | |
3213 | static void _route_entry_dump_nh(const struct route_entry *re, | |
3214 | const char *straddr, | |
3215 | const struct nexthop *nexthop) | |
3216 | { | |
3217 | char nhname[PREFIX_STRLEN]; | |
3218 | char backup_str[50]; | |
3219 | char wgt_str[50]; | |
474aebd9 | 3220 | char temp_str[10]; |
cbe5bafb | 3221 | char label_str[MPLS_LABEL_STRLEN]; |
474aebd9 | 3222 | int i; |
6d81b590 MS |
3223 | struct interface *ifp; |
3224 | struct vrf *vrf = vrf_lookup_by_id(nexthop->vrf_id); | |
3225 | ||
3226 | switch (nexthop->type) { | |
3227 | case NEXTHOP_TYPE_BLACKHOLE: | |
772270f3 | 3228 | snprintf(nhname, sizeof(nhname), "Blackhole"); |
6d81b590 MS |
3229 | break; |
3230 | case NEXTHOP_TYPE_IFINDEX: | |
3231 | ifp = if_lookup_by_index(nexthop->ifindex, nexthop->vrf_id); | |
772270f3 QY |
3232 | snprintf(nhname, sizeof(nhname), "%s", |
3233 | ifp ? ifp->name : "Unknown"); | |
6d81b590 MS |
3234 | break; |
3235 | case NEXTHOP_TYPE_IPV4: | |
3236 | /* fallthrough */ | |
3237 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
3238 | inet_ntop(AF_INET, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
3239 | break; | |
3240 | case NEXTHOP_TYPE_IPV6: | |
3241 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3242 | inet_ntop(AF_INET6, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
3243 | break; | |
3244 | } | |
3245 | ||
cbe5bafb MS |
3246 | /* Label stack */ |
3247 | label_str[0] = '\0'; | |
3248 | if (nexthop->nh_label && nexthop->nh_label->num_labels > 0) { | |
3249 | mpls_label2str(nexthop->nh_label->num_labels, | |
3250 | nexthop->nh_label->label, label_str, | |
3251 | sizeof(label_str), 0 /*pretty*/); | |
3252 | strlcat(label_str, ", ", sizeof(label_str)); | |
3253 | } | |
3254 | ||
6d81b590 MS |
3255 | backup_str[0] = '\0'; |
3256 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3257 | snprintf(backup_str, sizeof(backup_str), "backup "); |
3258 | for (i = 0; i < nexthop->backup_num; i++) { | |
3259 | snprintf(temp_str, sizeof(temp_str), "%d, ", | |
3260 | nexthop->backup_idx[i]); | |
3261 | strlcat(backup_str, temp_str, sizeof(backup_str)); | |
3262 | } | |
6d81b590 MS |
3263 | } |
3264 | ||
3265 | wgt_str[0] = '\0'; | |
3266 | if (nexthop->weight) | |
3267 | snprintf(wgt_str, sizeof(wgt_str), "wgt %d,", nexthop->weight); | |
3268 | ||
cbe5bafb | 3269 | zlog_debug("%s: %s %s[%u] %svrf %s(%u) %s%s with flags %s%s%s%s%s%s%s%s", |
6d81b590 | 3270 | straddr, (nexthop->rparent ? " NH" : "NH"), nhname, |
cbe5bafb | 3271 | nexthop->ifindex, label_str, vrf ? vrf->name : "Unknown", |
6d81b590 MS |
3272 | nexthop->vrf_id, |
3273 | wgt_str, backup_str, | |
3274 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
3275 | ? "ACTIVE " | |
3276 | : ""), | |
3277 | (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) | |
3278 | ? "FIB " | |
3279 | : ""), | |
3280 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
3281 | ? "RECURSIVE " | |
3282 | : ""), | |
3283 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK) | |
3284 | ? "ONLINK " | |
3285 | : ""), | |
3286 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_DUPLICATE) | |
3287 | ? "DUPLICATE " | |
aab4eca1 DS |
3288 | : ""), |
3289 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RNH_FILTERED) | |
3290 | ? "FILTERED " : ""), | |
3291 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP) | |
3292 | ? "BACKUP " : ""), | |
3293 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE) | |
3294 | ? "SRTE " : "")); | |
6d81b590 MS |
3295 | |
3296 | } | |
3297 | ||
f0f77c9a | 3298 | /* This function dumps the contents of a given RE entry into |
dc95824a DO |
3299 | * standard debug log. Calling function name and IP prefix in |
3300 | * question are passed as 1st and 2nd arguments. | |
3301 | */ | |
d62a17ae | 3302 | void _route_entry_dump(const char *func, union prefixconstptr pp, |
3303 | union prefixconstptr src_pp, | |
3304 | const struct route_entry *re) | |
3305 | { | |
d62a17ae | 3306 | const struct prefix *src_p = src_pp.p; |
3307 | bool is_srcdst = src_p && src_p->prefixlen; | |
3308 | char straddr[PREFIX_STRLEN]; | |
3309 | char srcaddr[PREFIX_STRLEN]; | |
61e6de9d DS |
3310 | char flags_buf[128]; |
3311 | char status_buf[128]; | |
d62a17ae | 3312 | struct nexthop *nexthop; |
c479e756 | 3313 | struct vrf *vrf = vrf_lookup_by_id(re->vrf_id); |
6d81b590 | 3314 | struct nexthop_group *nhg; |
d62a17ae | 3315 | |
5d27875b DL |
3316 | prefix2str(pp, straddr, sizeof(straddr)); |
3317 | ||
c479e756 | 3318 | zlog_debug("%s: dumping RE entry %p for %s%s%s vrf %s(%u)", func, |
5d27875b | 3319 | (const void *)re, straddr, |
d62a17ae | 3320 | is_srcdst ? " from " : "", |
3321 | is_srcdst ? prefix2str(src_pp, srcaddr, sizeof(srcaddr)) | |
3322 | : "", | |
c479e756 | 3323 | VRF_LOGNAME(vrf), re->vrf_id); |
cc54cfee | 3324 | zlog_debug("%s: uptime == %lu, type == %u, instance == %d, table == %d", |
53c16fbe | 3325 | straddr, (unsigned long)re->uptime, re->type, re->instance, |
cc54cfee | 3326 | re->table); |
61e6de9d DS |
3327 | zlog_debug( |
3328 | "%s: metric == %u, mtu == %u, distance == %u, flags == %sstatus == %s", | |
3329 | straddr, re->metric, re->mtu, re->distance, | |
3330 | zclient_dump_route_flags(re->flags, flags_buf, | |
3331 | sizeof(flags_buf)), | |
3332 | _dump_re_status(re, status_buf, sizeof(status_buf))); | |
53c16fbe | 3333 | zlog_debug("%s: nexthop_num == %u, nexthop_active_num == %u", straddr, |
c415d895 MS |
3334 | nexthop_group_nexthop_num(&(re->nhe->nhg)), |
3335 | nexthop_group_active_nexthop_num(&(re->nhe->nhg))); | |
d62a17ae | 3336 | |
6d81b590 MS |
3337 | /* Dump nexthops */ |
3338 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) | |
3339 | _route_entry_dump_nh(re, straddr, nexthop); | |
2d68a0f2 | 3340 | |
6d81b590 MS |
3341 | if (zebra_nhg_get_backup_nhg(re->nhe)) { |
3342 | zlog_debug("%s: backup nexthops:", straddr); | |
3343 | ||
3344 | nhg = zebra_nhg_get_backup_nhg(re->nhe); | |
3345 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) | |
3346 | _route_entry_dump_nh(re, straddr, nexthop); | |
d62a17ae | 3347 | } |
6d81b590 | 3348 | |
53c16fbe | 3349 | zlog_debug("%s: dump complete", straddr); |
dc95824a DO |
3350 | } |
3351 | ||
6d81b590 MS |
3352 | /* |
3353 | * This is an exported helper to rtm_read() to dump the strange | |
f0f77c9a | 3354 | * RE entry found by rib_lookup_ipv4_route() |
dc95824a | 3355 | */ |
d62a17ae | 3356 | void rib_lookup_and_dump(struct prefix_ipv4 *p, vrf_id_t vrf_id) |
3357 | { | |
3358 | struct route_table *table; | |
3359 | struct route_node *rn; | |
3360 | struct route_entry *re; | |
bd47f3a3 | 3361 | struct vrf *vrf; |
d62a17ae | 3362 | |
bd47f3a3 JU |
3363 | vrf = vrf_lookup_by_id(vrf_id); |
3364 | ||
d62a17ae | 3365 | /* Lookup table. */ |
3366 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
3367 | if (!table) { | |
e914ccbe | 3368 | flog_err(EC_ZEBRA_TABLE_LOOKUP_FAILED, |
bd47f3a3 JU |
3369 | "%s:%s(%u) zebra_vrf_table() returned NULL", __func__, |
3370 | VRF_LOGNAME(vrf), vrf_id); | |
d62a17ae | 3371 | return; |
3372 | } | |
3373 | ||
3374 | /* Scan the RIB table for exactly matching RE entry. */ | |
3375 | rn = route_node_lookup(table, (struct prefix *)p); | |
3376 | ||
3377 | /* No route for this prefix. */ | |
3378 | if (!rn) { | |
2dbe669b DA |
3379 | zlog_debug("%s:%s(%u) lookup failed for %pFX", __func__, |
3380 | VRF_LOGNAME(vrf), vrf_id, (struct prefix *)p); | |
d62a17ae | 3381 | return; |
3382 | } | |
3383 | ||
3384 | /* Unlock node. */ | |
3385 | route_unlock_node(rn); | |
3386 | ||
3387 | /* let's go */ | |
a2addae8 | 3388 | RNODE_FOREACH_RE (rn, re) { |
bd47f3a3 JU |
3389 | zlog_debug("%s:%s(%u) rn %p, re %p: %s, %s", __func__, |
3390 | VRF_LOGNAME(vrf), vrf_id, (void *)rn, (void *)re, | |
d62a17ae | 3391 | (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED) |
3392 | ? "removed" | |
3393 | : "NOT removed"), | |
3394 | (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED) | |
3395 | ? "selected" | |
3396 | : "NOT selected")); | |
3397 | route_entry_dump(p, NULL, re); | |
3398 | } | |
dc95824a DO |
3399 | } |
3400 | ||
20e5ff0a DO |
3401 | /* Check if requested address assignment will fail due to another |
3402 | * route being installed by zebra in FIB already. Take necessary | |
3403 | * actions, if needed: remove such a route from FIB and deSELECT | |
f0f77c9a | 3404 | * corresponding RE entry. Then put affected RN into RIBQ head. |
20e5ff0a | 3405 | */ |
d62a17ae | 3406 | void rib_lookup_and_pushup(struct prefix_ipv4 *p, vrf_id_t vrf_id) |
3407 | { | |
3408 | struct route_table *table; | |
3409 | struct route_node *rn; | |
5f7a4718 | 3410 | rib_dest_t *dest; |
d62a17ae | 3411 | |
3412 | if (NULL == (table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id))) { | |
bd47f3a3 JU |
3413 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
3414 | ||
e914ccbe | 3415 | flog_err(EC_ZEBRA_TABLE_LOOKUP_FAILED, |
bd47f3a3 JU |
3416 | "%s:%s(%u) zebra_vrf_table() returned NULL", __func__, |
3417 | VRF_LOGNAME(vrf), vrf_id); | |
d62a17ae | 3418 | return; |
3419 | } | |
3420 | ||
3421 | /* No matches would be the simplest case. */ | |
3422 | if (NULL == (rn = route_node_lookup(table, (struct prefix *)p))) | |
3423 | return; | |
3424 | ||
3425 | /* Unlock node. */ | |
3426 | route_unlock_node(rn); | |
3427 | ||
5f7a4718 | 3428 | dest = rib_dest_from_rnode(rn); |
d62a17ae | 3429 | /* Check all RE entries. In case any changes have to be done, requeue |
3430 | * the RN into RIBQ head. If the routing message about the new connected | |
3431 | * route (generated by the IP address we are going to assign very soon) | |
3432 | * comes before the RIBQ is processed, the new RE entry will join | |
3433 | * RIBQ record already on head. This is necessary for proper | |
3434 | * revalidation | |
3435 | * of the rest of the RE. | |
3436 | */ | |
3cdba47a | 3437 | if (dest->selected_fib) { |
5f7a4718 | 3438 | if (IS_ZEBRA_DEBUG_RIB) { |
bd47f3a3 JU |
3439 | struct vrf *vrf = |
3440 | vrf_lookup_by_id(dest->selected_fib->vrf_id); | |
5f7a4718 | 3441 | |
bd47f3a3 | 3442 | zlog_debug( |
2dbe669b | 3443 | "%s(%u):%pFX: freeing way for connected prefix", |
bd47f3a3 | 3444 | VRF_LOGNAME(vrf), dest->selected_fib->vrf_id, |
2dbe669b | 3445 | &rn->p); |
5f7a4718 | 3446 | route_entry_dump(&rn->p, NULL, dest->selected_fib); |
d62a17ae | 3447 | } |
5f7a4718 | 3448 | rib_uninstall(rn, dest->selected_fib); |
d62a17ae | 3449 | rib_queue_add(rn); |
ade4a886 | 3450 | } |
20e5ff0a DO |
3451 | } |
3452 | ||
1d48702e MS |
3453 | /* |
3454 | * Internal route-add implementation; there are a couple of different public | |
3455 | * signatures. Callers in this path are responsible for the memory they | |
3456 | * allocate: if they allocate a nexthop_group or backup nexthop info, they | |
3457 | * must free those objects. If this returns < 0, an error has occurred and the | |
3458 | * route_entry 're' has not been captured; the caller should free that also. | |
3459 | */ | |
3460 | int rib_add_multipath_nhe(afi_t afi, safi_t safi, struct prefix *p, | |
6d81b590 | 3461 | struct prefix_ipv6 *src_p, struct route_entry *re, |
1d48702e | 3462 | struct nhg_hash_entry *re_nhe) |
718e3744 | 3463 | { |
98cda54a | 3464 | struct nhg_hash_entry *nhe = NULL; |
d62a17ae | 3465 | struct route_table *table; |
3466 | struct route_node *rn; | |
0ca6f3b1 | 3467 | struct route_entry *same = NULL, *first_same = NULL; |
d62a17ae | 3468 | int ret = 0; |
0ca6f3b1 MS |
3469 | int same_count = 0; |
3470 | rib_dest_t *dest; | |
b4c034b0 | 3471 | |
1d48702e MS |
3472 | if (!re || !re_nhe) |
3473 | return -1; | |
b4c034b0 | 3474 | |
1f610a1f | 3475 | assert(!src_p || !src_p->prefixlen || afi == AFI_IP6); |
05737783 | 3476 | |
d62a17ae | 3477 | /* Lookup table. */ |
c7c0b007 SW |
3478 | table = zebra_vrf_get_table_with_table_id(afi, safi, re->vrf_id, |
3479 | re->table); | |
1d48702e MS |
3480 | if (!table) |
3481 | return -1; | |
cddf391b | 3482 | |
50db3f2f SW |
3483 | if (re->nhe_id > 0) { |
3484 | nhe = zebra_nhg_lookup_id(re->nhe_id); | |
98cda54a SW |
3485 | |
3486 | if (!nhe) { | |
3487 | flog_err( | |
3488 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
3489 | "Zebra failed to find the nexthop hash entry for id=%u in a route entry", | |
50db3f2f | 3490 | re->nhe_id); |
1d48702e | 3491 | |
98cda54a SW |
3492 | return -1; |
3493 | } | |
3494 | } else { | |
377e29f7 MS |
3495 | /* Lookup nhe from route information */ |
3496 | nhe = zebra_nhg_rib_find_nhe(re_nhe, afi); | |
98cda54a | 3497 | if (!nhe) { |
98cda54a SW |
3498 | char buf2[PREFIX_STRLEN] = ""; |
3499 | ||
3500 | flog_err( | |
3501 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
2dbe669b DA |
3502 | "Zebra failed to find or create a nexthop hash entry for %pFX%s%s", |
3503 | p, src_p ? " from " : "", | |
98cda54a SW |
3504 | src_p ? prefix2str(src_p, buf2, sizeof(buf2)) |
3505 | : ""); | |
3506 | ||
98cda54a SW |
3507 | return -1; |
3508 | } | |
98cda54a SW |
3509 | } |
3510 | ||
4b87c90d SW |
3511 | /* |
3512 | * Attach the re to the nhe's nexthop group. | |
3513 | * | |
3514 | * TODO: This will need to change when we start getting IDs from upper | |
3515 | * level protocols, as the refcnt might be wrong, since it checks | |
3516 | * if old_id != new_id. | |
3517 | */ | |
5463ce26 | 3518 | route_entry_update_nhe(re, nhe); |
98cda54a | 3519 | |
d62a17ae | 3520 | /* Make it sure prefixlen is applied to the prefix. */ |
3521 | apply_mask(p); | |
3522 | if (src_p) | |
3523 | apply_mask_ipv6(src_p); | |
718e3744 | 3524 | |
d62a17ae | 3525 | /* Set default distance by route type. */ |
eea2ef07 | 3526 | if (re->distance == 0) |
0492eea0 | 3527 | re->distance = route_distance(re->type); |
718e3744 | 3528 | |
d62a17ae | 3529 | /* Lookup route node.*/ |
3530 | rn = srcdest_rnode_get(table, p, src_p); | |
718e3744 | 3531 | |
40ecd8e4 DS |
3532 | /* |
3533 | * If same type of route are installed, treat it as a implicit | |
9db35a5e | 3534 | * withdraw. If the user has specified the No route replace semantics |
40ecd8e4 DS |
3535 | * for the install don't do a route replace. |
3536 | */ | |
a2addae8 | 3537 | RNODE_FOREACH_RE (rn, same) { |
0ca6f3b1 MS |
3538 | if (CHECK_FLAG(same->status, ROUTE_ENTRY_REMOVED)) { |
3539 | same_count++; | |
d62a17ae | 3540 | continue; |
0ca6f3b1 | 3541 | } |
41ec9222 | 3542 | |
9db35a5e | 3543 | /* Compare various route_entry properties */ |
0ca6f3b1 MS |
3544 | if (rib_compare_routes(re, same)) { |
3545 | same_count++; | |
3546 | ||
3547 | if (first_same == NULL) | |
3548 | first_same = same; | |
3549 | } | |
d62a17ae | 3550 | } |
718e3744 | 3551 | |
0ca6f3b1 MS |
3552 | same = first_same; |
3553 | ||
cf363e1b MS |
3554 | /* If this route is kernel/connected route, notify the dataplane. */ |
3555 | if (RIB_SYSTEM_ROUTE(re)) { | |
3556 | /* Notify dataplane */ | |
3557 | dplane_sys_route_add(rn, re); | |
3558 | } | |
3559 | ||
d62a17ae | 3560 | /* Link new re to node.*/ |
3561 | if (IS_ZEBRA_DEBUG_RIB) { | |
2da33d6b | 3562 | rnode_debug(rn, re->vrf_id, |
0ca6f3b1 MS |
3563 | "Inserting route rn %p, re %p (%s) existing %p, same_count %d", |
3564 | rn, re, zebra_route_string(re->type), same, | |
3565 | same_count); | |
718e3744 | 3566 | |
d62a17ae | 3567 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
3568 | route_entry_dump(p, src_p, re); | |
718e3744 | 3569 | } |
6883bf8d DS |
3570 | |
3571 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
d62a17ae | 3572 | rib_addnode(rn, re, 1); |
3573 | ret = 1; | |
6b0655a2 | 3574 | |
d62a17ae | 3575 | /* Free implicit route.*/ |
1d48702e | 3576 | if (same) |
d62a17ae | 3577 | rib_delnode(rn, same); |
718e3744 | 3578 | |
0ca6f3b1 MS |
3579 | /* See if we can remove some RE entries that are queued for |
3580 | * removal, but won't be considered in rib processing. | |
3581 | */ | |
3582 | dest = rib_dest_from_rnode(rn); | |
3583 | RNODE_FOREACH_RE_SAFE (rn, re, same) { | |
3584 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
3585 | /* If the route was used earlier, must retain it. */ | |
3586 | if (dest && re == dest->selected_fib) | |
3587 | continue; | |
3588 | ||
3589 | if (IS_ZEBRA_DEBUG_RIB) | |
3590 | rnode_debug(rn, re->vrf_id, "rn %p, removing unneeded re %p", | |
3591 | rn, re); | |
3592 | ||
3593 | rib_unlink(rn, re); | |
3594 | } | |
3595 | } | |
3596 | ||
d62a17ae | 3597 | route_unlock_node(rn); |
3598 | return ret; | |
3599 | } | |
3600 | ||
1d48702e MS |
3601 | /* |
3602 | * Add a single route. | |
3603 | */ | |
3604 | int rib_add_multipath(afi_t afi, safi_t safi, struct prefix *p, | |
3605 | struct prefix_ipv6 *src_p, struct route_entry *re, | |
3606 | struct nexthop_group *ng) | |
3607 | { | |
3608 | int ret; | |
377e29f7 | 3609 | struct nhg_hash_entry nhe; |
1d48702e MS |
3610 | |
3611 | if (!re) | |
3612 | return -1; | |
3613 | ||
3614 | /* We either need nexthop(s) or an existing nexthop id */ | |
3615 | if (ng == NULL && re->nhe_id == 0) | |
3616 | return -1; | |
3617 | ||
3618 | /* | |
3619 | * Use a temporary nhe to convey info to the common/main api. | |
3620 | */ | |
377e29f7 | 3621 | zebra_nhe_init(&nhe, afi, (ng ? ng->nexthop : NULL)); |
1d48702e MS |
3622 | if (ng) |
3623 | nhe.nhg.nexthop = ng->nexthop; | |
3624 | else if (re->nhe_id > 0) | |
3625 | nhe.id = re->nhe_id; | |
3626 | ||
3627 | ret = rib_add_multipath_nhe(afi, safi, p, src_p, re, &nhe); | |
3628 | ||
3629 | /* In this path, the callers expect memory to be freed. */ | |
3630 | nexthop_group_delete(&ng); | |
3631 | ||
3632 | /* In error cases, free the route also */ | |
3633 | if (ret < 0) | |
3634 | XFREE(MTYPE_RE, re); | |
3635 | ||
3636 | return ret; | |
3637 | } | |
3638 | ||
d62a17ae | 3639 | void rib_delete(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 3640 | unsigned short instance, uint32_t flags, struct prefix *p, |
fd36be7e | 3641 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
bc541126 | 3642 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, |
3ceae22b | 3643 | uint8_t distance, bool fromkernel) |
d62a17ae | 3644 | { |
3645 | struct route_table *table; | |
3646 | struct route_node *rn; | |
3647 | struct route_entry *re; | |
3648 | struct route_entry *fib = NULL; | |
3649 | struct route_entry *same = NULL; | |
fd36be7e | 3650 | struct nexthop *rtnh; |
d62a17ae | 3651 | char buf2[INET6_ADDRSTRLEN]; |
5f7a4718 | 3652 | rib_dest_t *dest; |
d62a17ae | 3653 | |
1f610a1f | 3654 | assert(!src_p || !src_p->prefixlen || afi == AFI_IP6); |
d62a17ae | 3655 | |
3656 | /* Lookup table. */ | |
c7c0b007 SW |
3657 | table = zebra_vrf_lookup_table_with_table_id(afi, safi, vrf_id, |
3658 | table_id); | |
d62a17ae | 3659 | if (!table) |
3660 | return; | |
3661 | ||
3662 | /* Apply mask. */ | |
3663 | apply_mask(p); | |
3664 | if (src_p) | |
3665 | apply_mask_ipv6(src_p); | |
3666 | ||
3667 | /* Lookup route node. */ | |
3668 | rn = srcdest_rnode_lookup(table, p, src_p); | |
3669 | if (!rn) { | |
82d7d0e2 | 3670 | if (IS_ZEBRA_DEBUG_RIB) { |
82144f53 | 3671 | char src_buf[PREFIX_STRLEN]; |
82d7d0e2 DS |
3672 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
3673 | ||
82144f53 DS |
3674 | if (src_p && src_p->prefixlen) |
3675 | prefix2str(src_p, src_buf, sizeof(src_buf)); | |
3676 | else | |
3677 | src_buf[0] = '\0'; | |
3678 | ||
2dbe669b DA |
3679 | zlog_debug("%s[%d]:%pFX%s%s doesn't exist in rib", |
3680 | vrf->name, table_id, p, | |
d62a17ae | 3681 | (src_buf[0] != '\0') ? " from " : "", |
3682 | src_buf); | |
82d7d0e2 | 3683 | } |
d62a17ae | 3684 | return; |
3685 | } | |
718e3744 | 3686 | |
5f7a4718 DS |
3687 | dest = rib_dest_from_rnode(rn); |
3688 | fib = dest->selected_fib; | |
3689 | ||
d62a17ae | 3690 | /* Lookup same type route. */ |
a2addae8 | 3691 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 3692 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
3693 | continue; | |
3694 | ||
d62a17ae | 3695 | if (re->type != type) |
3696 | continue; | |
3697 | if (re->instance != instance) | |
3698 | continue; | |
40ecd8e4 DS |
3699 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && |
3700 | distance != re->distance) | |
3701 | continue; | |
3702 | ||
996c9314 | 3703 | if (re->type == ZEBRA_ROUTE_KERNEL && re->metric != metric) |
f19435a8 | 3704 | continue; |
0eb97b86 | 3705 | if (re->type == ZEBRA_ROUTE_CONNECT && |
c415d895 | 3706 | (rtnh = re->nhe->nhg.nexthop) |
fd36be7e DL |
3707 | && rtnh->type == NEXTHOP_TYPE_IFINDEX && nh) { |
3708 | if (rtnh->ifindex != nh->ifindex) | |
d62a17ae | 3709 | continue; |
d62a17ae | 3710 | same = re; |
3711 | break; | |
3712 | } | |
fec211ad | 3713 | |
d62a17ae | 3714 | /* Make sure that the route found has the same gateway. */ |
fec211ad | 3715 | if (nhe_id && re->nhe_id == nhe_id) { |
bc541126 SW |
3716 | same = re; |
3717 | break; | |
fec211ad SW |
3718 | } |
3719 | ||
3720 | if (nh == NULL) { | |
3721 | same = re; | |
3722 | break; | |
3723 | } | |
c415d895 | 3724 | for (ALL_NEXTHOPS(re->nhe->nhg, rtnh)) { |
fec211ad SW |
3725 | /* |
3726 | * No guarantee all kernel send nh with labels | |
3727 | * on delete. | |
3728 | */ | |
3729 | if (nexthop_same_no_labels(rtnh, nh)) { | |
d62a17ae | 3730 | same = re; |
3731 | break; | |
3732 | } | |
d62a17ae | 3733 | } |
fec211ad SW |
3734 | |
3735 | if (same) | |
3736 | break; | |
d62a17ae | 3737 | } |
3738 | /* If same type of route can't be found and this message is from | |
3739 | kernel. */ | |
3740 | if (!same) { | |
5dfeba19 DS |
3741 | /* |
3742 | * In the past(HA!) we could get here because | |
3743 | * we were receiving a route delete from the | |
3744 | * kernel and we're not marking the proto | |
3745 | * as coming from it's appropriate originator. | |
3746 | * Now that we are properly noticing the fact | |
3747 | * that the kernel has deleted our route we | |
3748 | * are not going to get called in this path | |
3749 | * I am going to leave this here because | |
3750 | * this might still work this way on non-linux | |
3751 | * platforms as well as some weird state I have | |
3752 | * not properly thought of yet. | |
3753 | * If we can show that this code path is | |
3754 | * dead then we can remove it. | |
3755 | */ | |
b8faa875 | 3756 | if (fib && CHECK_FLAG(flags, ZEBRA_FLAG_SELFROUTE)) { |
d62a17ae | 3757 | if (IS_ZEBRA_DEBUG_RIB) { |
2da33d6b DS |
3758 | rnode_debug(rn, vrf_id, |
3759 | "rn %p, re %p (%s) was deleted from kernel, adding", | |
3760 | rn, fib, | |
3761 | zebra_route_string(fib->type)); | |
d62a17ae | 3762 | } |
9271987f DS |
3763 | if (allow_delete |
3764 | || CHECK_FLAG(dest->flags, RIB_ROUTE_ANY_QUEUED)) { | |
677c1dd5 | 3765 | UNSET_FLAG(fib->status, ROUTE_ENTRY_INSTALLED); |
d62a17ae | 3766 | /* Unset flags. */ |
c415d895 | 3767 | for (rtnh = fib->nhe->nhg.nexthop; rtnh; |
fd36be7e DL |
3768 | rtnh = rtnh->next) |
3769 | UNSET_FLAG(rtnh->flags, | |
d62a17ae | 3770 | NEXTHOP_FLAG_FIB); |
3771 | ||
ed216282 DS |
3772 | /* |
3773 | * This is a non FRR route | |
3774 | * as such we should mark | |
3775 | * it as deleted | |
3776 | */ | |
5f7a4718 | 3777 | dest->selected_fib = NULL; |
d62a17ae | 3778 | } else { |
3779 | /* This means someone else, other than Zebra, | |
3780 | * has deleted | |
3781 | * a Zebra router from the kernel. We will add | |
3782 | * it back */ | |
3783 | rib_install_kernel(rn, fib, NULL); | |
3784 | } | |
3785 | } else { | |
3786 | if (IS_ZEBRA_DEBUG_RIB) { | |
fd36be7e | 3787 | if (nh) |
d62a17ae | 3788 | rnode_debug( |
3789 | rn, vrf_id, | |
3efd0893 | 3790 | "via %s ifindex %d type %d doesn't exist in rib", |
36228974 | 3791 | inet_ntop(afi2family(afi), |
3792 | &nh->gate, buf2, | |
3793 | sizeof(buf2)), | |
3794 | nh->ifindex, type); | |
d62a17ae | 3795 | else |
3796 | rnode_debug( | |
3797 | rn, vrf_id, | |
fd36be7e DL |
3798 | "type %d doesn't exist in rib", |
3799 | type); | |
d62a17ae | 3800 | } |
3801 | route_unlock_node(rn); | |
3802 | return; | |
3803 | } | |
3804 | } | |
718e3744 | 3805 | |
5dfeba19 | 3806 | if (same) { |
996c9314 LB |
3807 | if (fromkernel && CHECK_FLAG(flags, ZEBRA_FLAG_SELFROUTE) |
3808 | && !allow_delete) { | |
5dfeba19 DS |
3809 | rib_install_kernel(rn, same, NULL); |
3810 | route_unlock_node(rn); | |
3811 | ||
3812 | return; | |
3813 | } | |
6134fd82 | 3814 | |
2b83602b | 3815 | /* Special handling for IPv4 or IPv6 routes sourced from |
3816 | * EVPN - the nexthop (and associated MAC) need to be | |
3817 | * uninstalled if no more refs. | |
3818 | */ | |
90264d64 | 3819 | if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) { |
6134fd82 | 3820 | struct nexthop *tmp_nh; |
3821 | ||
c415d895 | 3822 | for (ALL_NEXTHOPS(re->nhe->nhg, tmp_nh)) { |
6134fd82 | 3823 | struct ipaddr vtep_ip; |
3824 | ||
3825 | memset(&vtep_ip, 0, sizeof(struct ipaddr)); | |
1ec31309 | 3826 | if (afi == AFI_IP) { |
3827 | vtep_ip.ipa_type = IPADDR_V4; | |
3828 | memcpy(&(vtep_ip.ipaddr_v4), | |
3829 | &(tmp_nh->gate.ipv4), | |
3830 | sizeof(struct in_addr)); | |
3831 | } else { | |
3832 | vtep_ip.ipa_type = IPADDR_V6; | |
3833 | memcpy(&(vtep_ip.ipaddr_v6), | |
3834 | &(tmp_nh->gate.ipv6), | |
3835 | sizeof(struct in6_addr)); | |
3836 | } | |
32367e7a | 3837 | zebra_rib_queue_evpn_route_del(re->vrf_id, |
6134fd82 | 3838 | &vtep_ip, p); |
3839 | } | |
3840 | } | |
cf363e1b MS |
3841 | |
3842 | /* Notify dplane if system route changes */ | |
3843 | if (RIB_SYSTEM_ROUTE(re)) | |
3844 | dplane_sys_route_del(rn, same); | |
3845 | ||
d62a17ae | 3846 | rib_delnode(rn, same); |
5dfeba19 | 3847 | } |
05737783 | 3848 | |
d62a17ae | 3849 | route_unlock_node(rn); |
3850 | return; | |
3851 | } | |
718e3744 | 3852 | |
718e3744 | 3853 | |
d7c0a89a | 3854 | int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 3855 | unsigned short instance, uint32_t flags, struct prefix *p, |
d7c0a89a | 3856 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
8032b717 SW |
3857 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, uint32_t mtu, |
3858 | uint8_t distance, route_tag_t tag) | |
d62a17ae | 3859 | { |
bbb322f2 SW |
3860 | struct route_entry *re = NULL; |
3861 | struct nexthop *nexthop = NULL; | |
0eb97b86 | 3862 | struct nexthop_group *ng = NULL; |
718e3744 | 3863 | |
66af6845 | 3864 | /* Allocate new route_entry structure. */ |
d62a17ae | 3865 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); |
d62a17ae | 3866 | re->type = type; |
3867 | re->instance = instance; | |
3868 | re->distance = distance; | |
3869 | re->flags = flags; | |
3870 | re->metric = metric; | |
3871 | re->mtu = mtu; | |
3872 | re->table = table_id; | |
3873 | re->vrf_id = vrf_id; | |
98572489 | 3874 | re->uptime = monotime(NULL); |
4e40b6d6 | 3875 | re->tag = tag; |
bbb322f2 SW |
3876 | re->nhe_id = nhe_id; |
3877 | ||
0eb97b86 MS |
3878 | /* If the owner of the route supplies a shared nexthop-group id, |
3879 | * we'll use that. Otherwise, pass the nexthop along directly. | |
3880 | */ | |
e22e8001 | 3881 | if (!nhe_id) { |
0eb97b86 | 3882 | ng = nexthop_group_new(); |
d62a17ae | 3883 | |
e22e8001 SW |
3884 | /* Add nexthop. */ |
3885 | nexthop = nexthop_new(); | |
3886 | *nexthop = *nh; | |
0eb97b86 | 3887 | nexthop_group_add_sorted(ng, nexthop); |
e22e8001 | 3888 | } |
718e3744 | 3889 | |
0eb97b86 | 3890 | return rib_add_multipath(afi, safi, p, src_p, re, ng); |
718e3744 | 3891 | } |
3892 | ||
91e6f25b | 3893 | static const char *rib_update_event2str(enum rib_update_event event) |
2a99ab95 SW |
3894 | { |
3895 | const char *ret = "UNKNOWN"; | |
3896 | ||
3897 | switch (event) { | |
3898 | case RIB_UPDATE_KERNEL: | |
3899 | ret = "RIB_UPDATE_KERNEL"; | |
3900 | break; | |
3901 | case RIB_UPDATE_RMAP_CHANGE: | |
3902 | ret = "RIB_UPDATE_RMAP_CHANGE"; | |
3903 | break; | |
3904 | case RIB_UPDATE_OTHER: | |
3905 | ret = "RIB_UPDATE_OTHER"; | |
3906 | break; | |
3907 | case RIB_UPDATE_MAX: | |
3908 | break; | |
3909 | } | |
3910 | ||
3911 | return ret; | |
3912 | } | |
3913 | ||
3914 | ||
3915 | /* Schedule route nodes to be processed if they match the type */ | |
3916 | static void rib_update_route_node(struct route_node *rn, int type) | |
3917 | { | |
3918 | struct route_entry *re, *next; | |
3919 | bool re_changed = false; | |
3920 | ||
3921 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
3922 | if (type == ZEBRA_ROUTE_ALL || type == re->type) { | |
3923 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3924 | re_changed = true; | |
3925 | } | |
3926 | } | |
3927 | ||
3928 | if (re_changed) | |
3929 | rib_queue_add(rn); | |
3930 | } | |
3931 | ||
1c848137 | 3932 | /* Schedule routes of a particular table (address-family) based on event. */ |
54aeba35 DS |
3933 | void rib_update_table(struct route_table *table, enum rib_update_event event, |
3934 | int rtype) | |
d62a17ae | 3935 | { |
3936 | struct route_node *rn; | |
2a99ab95 SW |
3937 | |
3938 | if (IS_ZEBRA_DEBUG_EVENT) { | |
3939 | struct zebra_vrf *zvrf; | |
3940 | struct vrf *vrf; | |
3941 | ||
630d5962 DS |
3942 | zvrf = table->info |
3943 | ? ((struct rib_table_info *)table->info)->zvrf | |
3944 | : NULL; | |
2a99ab95 SW |
3945 | vrf = zvrf ? zvrf->vrf : NULL; |
3946 | ||
54aeba35 | 3947 | zlog_debug("%s: %s VRF %s Table %u event %s Route type: %s", __func__, |
2a99ab95 | 3948 | table->info ? afi2str( |
630d5962 | 3949 | ((struct rib_table_info *)table->info)->afi) |
2a99ab95 | 3950 | : "Unknown", |
bd47f3a3 | 3951 | VRF_LOGNAME(vrf), zvrf ? zvrf->table_id : 0, |
54aeba35 | 3952 | rib_update_event2str(event), zebra_route_string(rtype)); |
2a99ab95 | 3953 | } |
d62a17ae | 3954 | |
3955 | /* Walk all routes and queue for processing, if appropriate for | |
3956 | * the trigger event. | |
3957 | */ | |
3958 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { | |
1ca60f2c DS |
3959 | /* |
3960 | * If we are looking at a route node and the node | |
3961 | * has already been queued we don't | |
3962 | * need to queue it up again | |
3963 | */ | |
2a99ab95 SW |
3964 | if (rn->info |
3965 | && CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
3966 | RIB_ROUTE_ANY_QUEUED)) | |
1ca60f2c | 3967 | continue; |
2a99ab95 | 3968 | |
d62a17ae | 3969 | switch (event) { |
2a99ab95 SW |
3970 | case RIB_UPDATE_KERNEL: |
3971 | rib_update_route_node(rn, ZEBRA_ROUTE_KERNEL); | |
3972 | break; | |
d62a17ae | 3973 | case RIB_UPDATE_RMAP_CHANGE: |
3974 | case RIB_UPDATE_OTHER: | |
54aeba35 | 3975 | rib_update_route_node(rn, rtype); |
d62a17ae | 3976 | break; |
d62a17ae | 3977 | default: |
3978 | break; | |
3979 | } | |
3980 | } | |
b84c7253 | 3981 | } |
3982 | ||
54aeba35 DS |
3983 | static void rib_update_handle_vrf(vrf_id_t vrf_id, enum rib_update_event event, |
3984 | int rtype) | |
718e3744 | 3985 | { |
d62a17ae | 3986 | struct route_table *table; |
1c848137 | 3987 | |
2a99ab95 SW |
3988 | if (IS_ZEBRA_DEBUG_EVENT) |
3989 | zlog_debug("%s: Handling VRF %s event %s", __func__, | |
3990 | vrf_id_to_name(vrf_id), rib_update_event2str(event)); | |
3991 | ||
d62a17ae | 3992 | /* Process routes of interested address-families. */ |
3993 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
2a99ab95 | 3994 | if (table) |
54aeba35 | 3995 | rib_update_table(table, event, rtype); |
718e3744 | 3996 | |
d62a17ae | 3997 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, vrf_id); |
2a99ab95 | 3998 | if (table) |
54aeba35 | 3999 | rib_update_table(table, event, rtype); |
2a99ab95 SW |
4000 | } |
4001 | ||
54aeba35 | 4002 | static void rib_update_handle_vrf_all(enum rib_update_event event, int rtype) |
2a99ab95 SW |
4003 | { |
4004 | struct zebra_router_table *zrt; | |
4005 | ||
4006 | if (IS_ZEBRA_DEBUG_EVENT) | |
4007 | zlog_debug("%s: Handling VRF (ALL) event %s", __func__, | |
4008 | rib_update_event2str(event)); | |
4009 | ||
4010 | /* Just iterate over all the route tables, rather than vrf lookups */ | |
4011 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) | |
54aeba35 | 4012 | rib_update_table(zrt->table, event, rtype); |
2a99ab95 SW |
4013 | } |
4014 | ||
4015 | struct rib_update_ctx { | |
91e6f25b | 4016 | enum rib_update_event event; |
2a99ab95 SW |
4017 | bool vrf_all; |
4018 | vrf_id_t vrf_id; | |
4019 | }; | |
4020 | ||
4021 | static struct rib_update_ctx *rib_update_ctx_init(vrf_id_t vrf_id, | |
91e6f25b | 4022 | enum rib_update_event event) |
2a99ab95 SW |
4023 | { |
4024 | struct rib_update_ctx *ctx; | |
4025 | ||
4026 | ctx = XCALLOC(MTYPE_RIB_UPDATE_CTX, sizeof(struct rib_update_ctx)); | |
4027 | ||
4028 | ctx->event = event; | |
4029 | ctx->vrf_id = vrf_id; | |
4030 | ||
4031 | return ctx; | |
4032 | } | |
4033 | ||
4034 | static void rib_update_ctx_fini(struct rib_update_ctx **ctx) | |
4035 | { | |
4036 | XFREE(MTYPE_RIB_UPDATE_CTX, *ctx); | |
2a99ab95 SW |
4037 | } |
4038 | ||
4039 | static int rib_update_handler(struct thread *thread) | |
4040 | { | |
4041 | struct rib_update_ctx *ctx; | |
4042 | ||
4043 | ctx = THREAD_ARG(thread); | |
4044 | ||
4045 | if (ctx->vrf_all) | |
54aeba35 | 4046 | rib_update_handle_vrf_all(ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 | 4047 | else |
54aeba35 | 4048 | rib_update_handle_vrf(ctx->vrf_id, ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 SW |
4049 | |
4050 | rib_update_ctx_fini(&ctx); | |
4051 | ||
4052 | return 0; | |
4053 | } | |
4054 | ||
4055 | /* | |
4056 | * Thread list to ensure we don't schedule a ton of events | |
4057 | * if interfaces are flapping for instance. | |
4058 | */ | |
4059 | static struct thread *t_rib_update_threads[RIB_UPDATE_MAX]; | |
4060 | ||
2a99ab95 | 4061 | /* Schedule a RIB update event for all vrfs */ |
91e6f25b | 4062 | void rib_update(enum rib_update_event event) |
2a99ab95 SW |
4063 | { |
4064 | struct rib_update_ctx *ctx; | |
4065 | ||
4066 | ctx = rib_update_ctx_init(0, event); | |
4067 | ||
4068 | ctx->vrf_all = true; | |
4069 | ||
4070 | if (!thread_add_event(zrouter.master, rib_update_handler, ctx, 0, | |
4071 | &t_rib_update_threads[event])) | |
4072 | rib_update_ctx_fini(&ctx); /* Already scheduled */ | |
4073 | else if (IS_ZEBRA_DEBUG_EVENT) | |
05267678 | 4074 | zlog_debug("%s: Scheduled VRF (ALL), event %s", __func__, |
2a99ab95 | 4075 | rib_update_event2str(event)); |
718e3744 | 4076 | } |
4077 | ||
718e3744 | 4078 | /* Delete self installed routes after zebra is relaunched. */ |
95a29032 | 4079 | void rib_sweep_table(struct route_table *table) |
d62a17ae | 4080 | { |
4081 | struct route_node *rn; | |
4082 | struct route_entry *re; | |
4083 | struct route_entry *next; | |
915902cb | 4084 | struct nexthop *nexthop; |
d62a17ae | 4085 | |
915902cb DS |
4086 | if (!table) |
4087 | return; | |
d62a17ae | 4088 | |
6d81b590 MS |
4089 | if (IS_ZEBRA_DEBUG_RIB) |
4090 | zlog_debug("%s: starting", __func__); | |
4091 | ||
915902cb | 4092 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
a2addae8 | 4093 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d4644d41 | 4094 | |
915902cb DS |
4095 | if (IS_ZEBRA_DEBUG_RIB) |
4096 | route_entry_dump(&rn->p, NULL, re); | |
4097 | ||
4098 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
4099 | continue; | |
4100 | ||
4101 | if (!CHECK_FLAG(re->flags, ZEBRA_FLAG_SELFROUTE)) | |
4102 | continue; | |
4103 | ||
d4644d41 DS |
4104 | /* |
4105 | * If routes are older than startup_time then | |
4106 | * we know we read them in from the kernel. | |
4107 | * As such we can safely remove them. | |
4108 | */ | |
4109 | if (zrouter.startup_time < re->uptime) | |
4110 | continue; | |
4111 | ||
915902cb DS |
4112 | /* |
4113 | * So we are starting up and have received | |
4114 | * routes from the kernel that we have installed | |
4115 | * from a previous run of zebra but not cleaned | |
4116 | * up ( say a kill -9 ) | |
4117 | * But since we haven't actually installed | |
4118 | * them yet( we received them from the kernel ) | |
4119 | * we don't think they are active. | |
4120 | * So let's pretend they are active to actually | |
4121 | * remove them. | |
4122 | * In all honesty I'm not sure if we should | |
4123 | * mark them as active when we receive them | |
4124 | * This is startup only so probably ok. | |
4125 | * | |
4126 | * If we ever decide to move rib_sweep_table | |
4127 | * to a different spot (ie startup ) | |
4128 | * this decision needs to be revisited | |
4129 | */ | |
677c1dd5 | 4130 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 4131 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
915902cb DS |
4132 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
4133 | ||
0c555cc6 DS |
4134 | rib_uninstall_kernel(rn, re); |
4135 | rib_delnode(rn, re); | |
915902cb DS |
4136 | } |
4137 | } | |
6d81b590 MS |
4138 | |
4139 | if (IS_ZEBRA_DEBUG_RIB) | |
4140 | zlog_debug("%s: ends", __func__); | |
718e3744 | 4141 | } |
4142 | ||
4143 | /* Sweep all RIB tables. */ | |
d4644d41 | 4144 | int rib_sweep_route(struct thread *t) |
718e3744 | 4145 | { |
d62a17ae | 4146 | struct vrf *vrf; |
4147 | struct zebra_vrf *zvrf; | |
78104b9b | 4148 | |
a2addae8 | 4149 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
915902cb DS |
4150 | if ((zvrf = vrf->info) == NULL) |
4151 | continue; | |
4152 | ||
d62a17ae | 4153 | rib_sweep_table(zvrf->table[AFI_IP][SAFI_UNICAST]); |
4154 | rib_sweep_table(zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4155 | } | |
95a29032 | 4156 | |
89272910 | 4157 | zebra_router_sweep_route(); |
38e40db1 | 4158 | zebra_router_sweep_nhgs(); |
d4644d41 DS |
4159 | |
4160 | return 0; | |
718e3744 | 4161 | } |
2ea1ab1c VT |
4162 | |
4163 | /* Remove specific by protocol routes from 'table'. */ | |
d7c0a89a | 4164 | unsigned long rib_score_proto_table(uint8_t proto, unsigned short instance, |
47a08aa9 | 4165 | struct route_table *table) |
d62a17ae | 4166 | { |
4167 | struct route_node *rn; | |
4168 | struct route_entry *re; | |
4169 | struct route_entry *next; | |
4170 | unsigned long n = 0; | |
4171 | ||
4172 | if (table) | |
4173 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) | |
a2addae8 | 4174 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 4175 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
4176 | continue; | |
4177 | if (re->type == proto | |
4178 | && re->instance == instance) { | |
4179 | rib_delnode(rn, re); | |
4180 | n++; | |
4181 | } | |
4182 | } | |
4183 | return n; | |
2ea1ab1c VT |
4184 | } |
4185 | ||
4186 | /* Remove specific by protocol routes. */ | |
d7c0a89a | 4187 | unsigned long rib_score_proto(uint8_t proto, unsigned short instance) |
2ea1ab1c | 4188 | { |
d62a17ae | 4189 | struct vrf *vrf; |
4190 | struct zebra_vrf *zvrf; | |
d8612e65 | 4191 | struct other_route_table *ort; |
d62a17ae | 4192 | unsigned long cnt = 0; |
78104b9b | 4193 | |
d8612e65 DS |
4194 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
4195 | zvrf = vrf->info; | |
4196 | if (!zvrf) | |
4197 | continue; | |
78104b9b | 4198 | |
d8612e65 DS |
4199 | cnt += rib_score_proto_table(proto, instance, |
4200 | zvrf->table[AFI_IP][SAFI_UNICAST]) | |
4201 | + rib_score_proto_table( | |
4202 | proto, instance, | |
4203 | zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4204 | ||
81fddbe7 | 4205 | frr_each(otable, &zvrf->other_tables, ort) cnt += |
d8612e65 DS |
4206 | rib_score_proto_table(proto, instance, ort->table); |
4207 | } | |
47a08aa9 | 4208 | |
d62a17ae | 4209 | return cnt; |
2ea1ab1c VT |
4210 | } |
4211 | ||
718e3744 | 4212 | /* Close RIB and clean up kernel routes. */ |
d62a17ae | 4213 | void rib_close_table(struct route_table *table) |
718e3744 | 4214 | { |
d62a17ae | 4215 | struct route_node *rn; |
630d5962 | 4216 | struct rib_table_info *info; |
5f7a4718 | 4217 | rib_dest_t *dest; |
718e3744 | 4218 | |
1e9f448f DS |
4219 | if (!table) |
4220 | return; | |
9fd92e3c | 4221 | |
6ca30e9e | 4222 | info = route_table_get_info(table); |
5adc2528 | 4223 | |
5f7a4718 DS |
4224 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
4225 | dest = rib_dest_from_rnode(rn); | |
1e9f448f | 4226 | |
5f7a4718 | 4227 | if (dest && dest->selected_fib) { |
1e9f448f DS |
4228 | if (info->safi == SAFI_UNICAST) |
4229 | hook_call(rib_update, rn, NULL); | |
4230 | ||
3cdba47a DS |
4231 | rib_uninstall_kernel(rn, dest->selected_fib); |
4232 | dest->selected_fib = NULL; | |
1e9f448f | 4233 | } |
5f7a4718 | 4234 | } |
718e3744 | 4235 | } |
4236 | ||
9bd9717b MS |
4237 | /* |
4238 | * Handler for async dataplane results after a pseudowire installation | |
4239 | */ | |
4240 | static int handle_pw_result(struct zebra_dplane_ctx *ctx) | |
4241 | { | |
9bd9717b MS |
4242 | struct zebra_pw *pw; |
4243 | struct zebra_vrf *vrf; | |
4244 | ||
4245 | /* The pseudowire code assumes success - we act on an error | |
4246 | * result for installation attempts here. | |
4247 | */ | |
4248 | if (dplane_ctx_get_op(ctx) != DPLANE_OP_PW_INSTALL) | |
4249 | goto done; | |
4250 | ||
4251 | if (dplane_ctx_get_status(ctx) != ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
4252 | vrf = zebra_vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); | |
7c7ef4a8 | 4253 | pw = zebra_pw_find(vrf, dplane_ctx_get_ifname(ctx)); |
9bd9717b | 4254 | if (pw) |
fd563cc7 KS |
4255 | zebra_pw_install_failure(pw, |
4256 | dplane_ctx_get_pw_status(ctx)); | |
9bd9717b MS |
4257 | } |
4258 | ||
4259 | done: | |
a20e6c32 | 4260 | dplane_ctx_fini(&ctx); |
9bd9717b | 4261 | |
9f2d0354 | 4262 | return 0; |
9bd9717b MS |
4263 | } |
4264 | ||
4265 | ||
7cdb1a84 | 4266 | /* |
d37f4d6c MS |
4267 | * Handle results from the dataplane system. Dequeue update context |
4268 | * structs, dispatch to appropriate internal handlers. | |
7cdb1a84 MS |
4269 | */ |
4270 | static int rib_process_dplane_results(struct thread *thread) | |
4271 | { | |
25779064 | 4272 | struct zebra_dplane_ctx *ctx; |
4c206c8f | 4273 | struct dplane_ctx_q ctxlist; |
2fc69f03 | 4274 | bool shut_p = false; |
4c206c8f MS |
4275 | |
4276 | /* Dequeue a list of completed updates with one lock/unlock cycle */ | |
7cdb1a84 MS |
4277 | |
4278 | do { | |
4c206c8f MS |
4279 | TAILQ_INIT(&ctxlist); |
4280 | ||
7cdb1a84 | 4281 | /* Take lock controlling queue of results */ |
00dffa8c | 4282 | frr_with_mutex(&dplane_mutex) { |
d37f4d6c | 4283 | /* Dequeue list of context structs */ |
4c206c8f | 4284 | dplane_ctx_list_append(&ctxlist, &rib_dplane_q); |
7cdb1a84 | 4285 | } |
7cdb1a84 | 4286 | |
4c206c8f MS |
4287 | /* Dequeue context block */ |
4288 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4289 | ||
4290 | /* If we've emptied the results queue, we're done */ | |
4291 | if (ctx == NULL) | |
7cdb1a84 | 4292 | break; |
7cdb1a84 | 4293 | |
2fc69f03 MS |
4294 | /* If zebra is shutting down, avoid processing results, |
4295 | * just drain the results queue. | |
4296 | */ | |
4297 | shut_p = atomic_load_explicit(&zrouter.in_shutdown, | |
4298 | memory_order_relaxed); | |
4299 | if (shut_p) { | |
4300 | while (ctx) { | |
4301 | dplane_ctx_fini(&ctx); | |
4302 | ||
4303 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4304 | } | |
4305 | ||
4306 | continue; | |
4307 | } | |
4308 | ||
4c206c8f | 4309 | while (ctx) { |
d37f4d6c MS |
4310 | switch (dplane_ctx_get_op(ctx)) { |
4311 | case DPLANE_OP_ROUTE_INSTALL: | |
4312 | case DPLANE_OP_ROUTE_UPDATE: | |
4313 | case DPLANE_OP_ROUTE_DELETE: | |
188a00e0 MS |
4314 | { |
4315 | /* Bit of special case for route updates | |
4316 | * that were generated by async notifications: | |
4317 | * we don't want to continue processing these | |
4318 | * in the rib. | |
4319 | */ | |
4320 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4321 | rib_process_result(ctx); | |
4322 | else | |
4323 | dplane_ctx_fini(&ctx); | |
4324 | } | |
4325 | break; | |
d37f4d6c | 4326 | |
54818e3b MS |
4327 | case DPLANE_OP_ROUTE_NOTIFY: |
4328 | rib_process_dplane_notify(ctx); | |
d37f4d6c MS |
4329 | break; |
4330 | ||
9865e1c3 SW |
4331 | case DPLANE_OP_NH_INSTALL: |
4332 | case DPLANE_OP_NH_UPDATE: | |
4333 | case DPLANE_OP_NH_DELETE: | |
4334 | zebra_nhg_dplane_result(ctx); | |
4335 | break; | |
4336 | ||
d37f4d6c MS |
4337 | case DPLANE_OP_LSP_INSTALL: |
4338 | case DPLANE_OP_LSP_UPDATE: | |
4339 | case DPLANE_OP_LSP_DELETE: | |
188a00e0 MS |
4340 | { |
4341 | /* Bit of special case for LSP updates | |
4342 | * that were generated by async notifications: | |
4343 | * we don't want to continue processing these. | |
4344 | */ | |
4345 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4346 | zebra_mpls_lsp_dplane_result(ctx); | |
4347 | else | |
4348 | dplane_ctx_fini(&ctx); | |
4349 | } | |
4350 | break; | |
d37f4d6c | 4351 | |
104e3ad9 MS |
4352 | case DPLANE_OP_LSP_NOTIFY: |
4353 | zebra_mpls_process_dplane_notify(ctx); | |
d37f4d6c MS |
4354 | break; |
4355 | ||
9bd9717b MS |
4356 | case DPLANE_OP_PW_INSTALL: |
4357 | case DPLANE_OP_PW_UNINSTALL: | |
4358 | handle_pw_result(ctx); | |
4359 | break; | |
4360 | ||
cf363e1b MS |
4361 | case DPLANE_OP_SYS_ROUTE_ADD: |
4362 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
4363 | /* No further processing in zebra for these. */ | |
4364 | dplane_ctx_fini(&ctx); | |
4365 | break; | |
4366 | ||
036d93c0 MS |
4367 | case DPLANE_OP_MAC_INSTALL: |
4368 | case DPLANE_OP_MAC_DELETE: | |
4369 | zebra_vxlan_handle_result(ctx); | |
4370 | break; | |
4371 | ||
f62e5480 JU |
4372 | case DPLANE_OP_RULE_ADD: |
4373 | case DPLANE_OP_RULE_DELETE: | |
4374 | case DPLANE_OP_RULE_UPDATE: | |
5162e000 PG |
4375 | case DPLANE_OP_IPTABLE_ADD: |
4376 | case DPLANE_OP_IPTABLE_DELETE: | |
ef524230 PG |
4377 | case DPLANE_OP_IPSET_ADD: |
4378 | case DPLANE_OP_IPSET_DELETE: | |
4379 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
4380 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
f62e5480 JU |
4381 | zebra_pbr_dplane_result(ctx); |
4382 | break; | |
4383 | ||
931fa60c MS |
4384 | /* Some op codes not handled here */ |
4385 | case DPLANE_OP_ADDR_INSTALL: | |
4386 | case DPLANE_OP_ADDR_UNINSTALL: | |
4387 | case DPLANE_OP_NEIGH_INSTALL: | |
4388 | case DPLANE_OP_NEIGH_UPDATE: | |
4389 | case DPLANE_OP_NEIGH_DELETE: | |
0a27a2fe PG |
4390 | case DPLANE_OP_NEIGH_IP_INSTALL: |
4391 | case DPLANE_OP_NEIGH_IP_DELETE: | |
0bbd4ff4 MS |
4392 | case DPLANE_OP_VTEP_ADD: |
4393 | case DPLANE_OP_VTEP_DELETE: | |
d68e74b4 | 4394 | case DPLANE_OP_NEIGH_DISCOVER: |
c60522f7 | 4395 | case DPLANE_OP_BR_PORT_UPDATE: |
e18747a9 | 4396 | case DPLANE_OP_NEIGH_TABLE_UPDATE: |
62b4b7e4 | 4397 | case DPLANE_OP_GRE_SET: |
931fa60c | 4398 | case DPLANE_OP_NONE: |
d37f4d6c MS |
4399 | /* Don't expect this: just return the struct? */ |
4400 | dplane_ctx_fini(&ctx); | |
4401 | break; | |
931fa60c | 4402 | |
d37f4d6c | 4403 | } /* Dispatch by op code */ |
4c206c8f MS |
4404 | |
4405 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4406 | } | |
4407 | ||
5709131c | 4408 | } while (1); |
7cdb1a84 | 4409 | |
5709131c | 4410 | return 0; |
7cdb1a84 MS |
4411 | } |
4412 | ||
4413 | /* | |
4414 | * Results are returned from the dataplane subsystem, in the context of | |
1bcea841 | 4415 | * the dataplane pthread. We enqueue the results here for processing by |
7cdb1a84 MS |
4416 | * the main thread later. |
4417 | */ | |
4c206c8f | 4418 | static int rib_dplane_results(struct dplane_ctx_q *ctxlist) |
7cdb1a84 MS |
4419 | { |
4420 | /* Take lock controlling queue of results */ | |
00dffa8c | 4421 | frr_with_mutex(&dplane_mutex) { |
4c206c8f MS |
4422 | /* Enqueue context blocks */ |
4423 | dplane_ctx_list_append(&rib_dplane_q, ctxlist); | |
7cdb1a84 | 4424 | } |
7cdb1a84 | 4425 | |
4c206c8f | 4426 | /* Ensure event is signalled to zebra main pthread */ |
3801e764 | 4427 | thread_add_event(zrouter.master, rib_process_dplane_results, NULL, 0, |
7cdb1a84 MS |
4428 | &t_dplane); |
4429 | ||
5709131c | 4430 | return 0; |
7cdb1a84 MS |
4431 | } |
4432 | ||
eaa2716d SW |
4433 | /* |
4434 | * Ensure there are no empty slots in the route_info array. | |
4435 | * Every route type in zebra should be present there. | |
4436 | */ | |
4437 | static void check_route_info(void) | |
4438 | { | |
4439 | int len = array_size(route_info); | |
4440 | ||
4441 | /* | |
4442 | * ZEBRA_ROUTE_SYSTEM is special cased since | |
4443 | * its key is 0 anyway. | |
4444 | * | |
4445 | * ZEBRA_ROUTE_ALL is also ignored. | |
4446 | */ | |
4447 | for (int i = 0; i < len; i++) { | |
4448 | if (i == ZEBRA_ROUTE_SYSTEM || i == ZEBRA_ROUTE_ALL) | |
4449 | continue; | |
4450 | assert(route_info[i].key); | |
8dc7a759 | 4451 | assert(route_info[i].meta_q_map < MQ_SIZE); |
eaa2716d SW |
4452 | } |
4453 | } | |
4454 | ||
718e3744 | 4455 | /* Routing information base initialize. */ |
d62a17ae | 4456 | void rib_init(void) |
718e3744 | 4457 | { |
eaa2716d SW |
4458 | check_route_info(); |
4459 | ||
2561d12e | 4460 | rib_queue_init(); |
7cdb1a84 MS |
4461 | |
4462 | /* Init dataplane, and register for results */ | |
4463 | pthread_mutex_init(&dplane_mutex, NULL); | |
4464 | TAILQ_INIT(&rib_dplane_q); | |
4c206c8f | 4465 | zebra_dplane_init(rib_dplane_results); |
718e3744 | 4466 | } |
0915bb0c AS |
4467 | |
4468 | /* | |
4469 | * vrf_id_get_next | |
4470 | * | |
4471 | * Get the first vrf id that is greater than the given vrf id if any. | |
4472 | * | |
2951a7a4 | 4473 | * Returns true if a vrf id was found, false otherwise. |
0915bb0c | 4474 | */ |
d62a17ae | 4475 | static inline int vrf_id_get_next(vrf_id_t vrf_id, vrf_id_t *next_id_p) |
0915bb0c | 4476 | { |
d62a17ae | 4477 | struct vrf *vrf; |
b72ede27 | 4478 | |
d62a17ae | 4479 | vrf = vrf_lookup_by_id(vrf_id); |
4480 | if (vrf) { | |
4481 | vrf = RB_NEXT(vrf_id_head, vrf); | |
4482 | if (vrf) { | |
4483 | *next_id_p = vrf->vrf_id; | |
4484 | return 1; | |
4485 | } | |
4486 | } | |
0915bb0c | 4487 | |
d62a17ae | 4488 | return 0; |
0915bb0c AS |
4489 | } |
4490 | ||
4491 | /* | |
4492 | * rib_tables_iter_next | |
4493 | * | |
4494 | * Returns the next table in the iteration. | |
4495 | */ | |
d62a17ae | 4496 | struct route_table *rib_tables_iter_next(rib_tables_iter_t *iter) |
4497 | { | |
4498 | struct route_table *table; | |
4499 | ||
4500 | /* | |
4501 | * Array that helps us go over all AFI/SAFI combinations via one | |
4502 | * index. | |
4503 | */ | |
2b64873d | 4504 | static const struct { |
d62a17ae | 4505 | afi_t afi; |
4506 | safi_t safi; | |
4507 | } afi_safis[] = { | |
4508 | {AFI_IP, SAFI_UNICAST}, {AFI_IP, SAFI_MULTICAST}, | |
4509 | {AFI_IP, SAFI_LABELED_UNICAST}, {AFI_IP6, SAFI_UNICAST}, | |
4510 | {AFI_IP6, SAFI_MULTICAST}, {AFI_IP6, SAFI_LABELED_UNICAST}, | |
4511 | }; | |
4512 | ||
4513 | table = NULL; | |
4514 | ||
4515 | switch (iter->state) { | |
4516 | ||
4517 | case RIB_TABLES_ITER_S_INIT: | |
4518 | iter->vrf_id = VRF_DEFAULT; | |
4519 | iter->afi_safi_ix = -1; | |
4520 | ||
4521 | /* Fall through */ | |
4522 | ||
4523 | case RIB_TABLES_ITER_S_ITERATING: | |
4524 | iter->afi_safi_ix++; | |
4525 | while (1) { | |
4526 | ||
4527 | while (iter->afi_safi_ix | |
7e3a1ec7 | 4528 | < (int)array_size(afi_safis)) { |
d62a17ae | 4529 | table = zebra_vrf_table( |
4530 | afi_safis[iter->afi_safi_ix].afi, | |
4531 | afi_safis[iter->afi_safi_ix].safi, | |
4532 | iter->vrf_id); | |
4533 | if (table) | |
4534 | break; | |
4535 | ||
4536 | iter->afi_safi_ix++; | |
4537 | } | |
4538 | ||
4539 | /* | |
4540 | * Found another table in this vrf. | |
4541 | */ | |
4542 | if (table) | |
4543 | break; | |
4544 | ||
4545 | /* | |
4546 | * Done with all tables in the current vrf, go to the | |
4547 | * next | |
4548 | * one. | |
4549 | */ | |
4550 | if (!vrf_id_get_next(iter->vrf_id, &iter->vrf_id)) | |
4551 | break; | |
4552 | ||
4553 | iter->afi_safi_ix = 0; | |
4554 | } | |
0915bb0c | 4555 | |
0915bb0c AS |
4556 | break; |
4557 | ||
d62a17ae | 4558 | case RIB_TABLES_ITER_S_DONE: |
4559 | return NULL; | |
0915bb0c AS |
4560 | } |
4561 | ||
d62a17ae | 4562 | if (table) |
4563 | iter->state = RIB_TABLES_ITER_S_ITERATING; | |
4564 | else | |
4565 | iter->state = RIB_TABLES_ITER_S_DONE; | |
0915bb0c | 4566 | |
d62a17ae | 4567 | return table; |
0915bb0c | 4568 | } |