]>
Commit | Line | Data |
---|---|---|
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" |
1247efcc | 42 | #include "frrscript.h" |
718e3744 | 43 | |
89272910 | 44 | #include "zebra/zebra_router.h" |
43e52561 QY |
45 | #include "zebra/connected.h" |
46 | #include "zebra/debug.h" | |
47 | #include "zebra/interface.h" | |
48 | #include "zebra/redistribute.h" | |
718e3744 | 49 | #include "zebra/rib.h" |
50 | #include "zebra/rt.h" | |
43e52561 QY |
51 | #include "zebra/zapi_msg.h" |
52 | #include "zebra/zebra_errors.h" | |
7c551956 | 53 | #include "zebra/zebra_ns.h" |
fb018d25 | 54 | #include "zebra/zebra_rnh.h" |
43e52561 QY |
55 | #include "zebra/zebra_routemap.h" |
56 | #include "zebra/zebra_vrf.h" | |
6134fd82 | 57 | #include "zebra/zebra_vxlan.h" |
7cdb1a84 MS |
58 | #include "zebra/zapi_msg.h" |
59 | #include "zebra/zebra_dplane.h" | |
32367e7a | 60 | #include "zebra/zebra_evpn_mh.h" |
1247efcc | 61 | #include "zebra/zebra_script.h" |
7cdb1a84 | 62 | |
224ccf29 DL |
63 | DEFINE_MGROUP(ZEBRA, "zebra"); |
64 | ||
65 | DEFINE_MTYPE(ZEBRA, RE, "Route Entry"); | |
66 | DEFINE_MTYPE_STATIC(ZEBRA, RIB_DEST, "RIB destination"); | |
2a99ab95 | 67 | DEFINE_MTYPE_STATIC(ZEBRA, RIB_UPDATE_CTX, "Rib update context object"); |
32367e7a | 68 | DEFINE_MTYPE_STATIC(ZEBRA, WQ_WRAPPER, "WQ wrapper"); |
2a99ab95 | 69 | |
7cdb1a84 MS |
70 | /* |
71 | * Event, list, and mutex for delivery of dataplane results | |
72 | */ | |
73 | static pthread_mutex_t dplane_mutex; | |
74 | static struct thread *t_dplane; | |
25779064 | 75 | static struct dplane_ctx_q rib_dplane_q; |
718e3744 | 76 | |
d62a17ae | 77 | DEFINE_HOOK(rib_update, (struct route_node * rn, const char *reason), |
8451921b | 78 | (rn, reason)); |
4f8ea50c | 79 | |
32367e7a | 80 | /* Should we allow non FRR processes to delete our routes */ |
6baf7bb8 DS |
81 | extern int allow_delete; |
82 | ||
718e3744 | 83 | /* Each route type's string and default distance value. */ |
d62a17ae | 84 | static const struct { |
85 | int key; | |
8dc7a759 | 86 | uint8_t distance; |
73547a75 | 87 | uint8_t meta_q_map; |
d62a17ae | 88 | } route_info[ZEBRA_ROUTE_MAX] = { |
32367e7a MS |
89 | [ZEBRA_ROUTE_NHG] = {ZEBRA_ROUTE_NHG, 255 /* Unneeded for nhg's */, 0}, |
90 | [ZEBRA_ROUTE_SYSTEM] = {ZEBRA_ROUTE_SYSTEM, 0, 7}, | |
91 | [ZEBRA_ROUTE_KERNEL] = {ZEBRA_ROUTE_KERNEL, 0, 3}, | |
92 | [ZEBRA_ROUTE_CONNECT] = {ZEBRA_ROUTE_CONNECT, 0, 2}, | |
93 | [ZEBRA_ROUTE_STATIC] = {ZEBRA_ROUTE_STATIC, 1, 4}, | |
94 | [ZEBRA_ROUTE_RIP] = {ZEBRA_ROUTE_RIP, 120, 5}, | |
95 | [ZEBRA_ROUTE_RIPNG] = {ZEBRA_ROUTE_RIPNG, 120, 5}, | |
96 | [ZEBRA_ROUTE_OSPF] = {ZEBRA_ROUTE_OSPF, 110, 5}, | |
97 | [ZEBRA_ROUTE_OSPF6] = {ZEBRA_ROUTE_OSPF6, 110, 5}, | |
98 | [ZEBRA_ROUTE_ISIS] = {ZEBRA_ROUTE_ISIS, 115, 5}, | |
99 | [ZEBRA_ROUTE_BGP] = {ZEBRA_ROUTE_BGP, 20 /* IBGP is 200. */, 6}, | |
100 | [ZEBRA_ROUTE_PIM] = {ZEBRA_ROUTE_PIM, 255, 7}, | |
101 | [ZEBRA_ROUTE_EIGRP] = {ZEBRA_ROUTE_EIGRP, 90, 5}, | |
102 | [ZEBRA_ROUTE_NHRP] = {ZEBRA_ROUTE_NHRP, 10, 5}, | |
103 | [ZEBRA_ROUTE_HSLS] = {ZEBRA_ROUTE_HSLS, 255, 7}, | |
104 | [ZEBRA_ROUTE_OLSR] = {ZEBRA_ROUTE_OLSR, 255, 7}, | |
105 | [ZEBRA_ROUTE_TABLE] = {ZEBRA_ROUTE_TABLE, 150, 4}, | |
106 | [ZEBRA_ROUTE_LDP] = {ZEBRA_ROUTE_LDP, 150, 7}, | |
107 | [ZEBRA_ROUTE_VNC] = {ZEBRA_ROUTE_VNC, 20, 6}, | |
108 | [ZEBRA_ROUTE_VNC_DIRECT] = {ZEBRA_ROUTE_VNC_DIRECT, 20, 6}, | |
109 | [ZEBRA_ROUTE_VNC_DIRECT_RH] = {ZEBRA_ROUTE_VNC_DIRECT_RH, 20, 6}, | |
110 | [ZEBRA_ROUTE_BGP_DIRECT] = {ZEBRA_ROUTE_BGP_DIRECT, 20, 6}, | |
111 | [ZEBRA_ROUTE_BGP_DIRECT_EXT] = {ZEBRA_ROUTE_BGP_DIRECT_EXT, 20, 6}, | |
112 | [ZEBRA_ROUTE_BABEL] = {ZEBRA_ROUTE_BABEL, 100, 5}, | |
113 | [ZEBRA_ROUTE_SHARP] = {ZEBRA_ROUTE_SHARP, 150, 7}, | |
114 | [ZEBRA_ROUTE_PBR] = {ZEBRA_ROUTE_PBR, 200, 7}, | |
115 | [ZEBRA_ROUTE_BFD] = {ZEBRA_ROUTE_BFD, 255, 7}, | |
116 | [ZEBRA_ROUTE_OPENFABRIC] = {ZEBRA_ROUTE_OPENFABRIC, 115, 5}, | |
117 | [ZEBRA_ROUTE_VRRP] = {ZEBRA_ROUTE_VRRP, 255, 7}, | |
118 | [ZEBRA_ROUTE_SRTE] = {ZEBRA_ROUTE_SRTE, 255, 7}, | |
d6abd8b0 | 119 | /* Any new route type added to zebra, should be mirrored here */ |
c710b277 | 120 | |
d62a17ae | 121 | /* no entry/default: 150 */ |
718e3744 | 122 | }; |
6b0655a2 | 123 | |
32367e7a MS |
124 | /* EVPN/VXLAN subqueue is number 1 */ |
125 | #define META_QUEUE_EVPN 1 | |
126 | ||
04bec7b2 MS |
127 | /* Wrapper struct for nhg workqueue items; a 'ctx' is an incoming update |
128 | * from the OS, and an 'nhe' is a nhe update. | |
129 | */ | |
130 | struct wq_nhg_wrapper { | |
131 | int type; | |
132 | union { | |
133 | struct nhg_ctx *ctx; | |
134 | struct nhg_hash_entry *nhe; | |
135 | } u; | |
136 | }; | |
137 | ||
138 | #define WQ_NHG_WRAPPER_TYPE_CTX 0x01 | |
139 | #define WQ_NHG_WRAPPER_TYPE_NHG 0x02 | |
140 | ||
32367e7a MS |
141 | /* Wrapper structs for evpn/vxlan workqueue items. */ |
142 | struct wq_evpn_wrapper { | |
143 | int type; | |
144 | bool add_p; | |
145 | vrf_id_t vrf_id; | |
146 | bool esr_rxed; | |
147 | uint8_t df_alg; | |
148 | uint16_t df_pref; | |
7f7e49d1 MS |
149 | uint32_t flags; |
150 | uint32_t seq; | |
32367e7a | 151 | esi_t esi; |
7f7e49d1 | 152 | vni_t vni; |
32367e7a | 153 | struct ipaddr ip; |
7f7e49d1 | 154 | struct ethaddr macaddr; |
32367e7a | 155 | struct prefix prefix; |
7f7e49d1 | 156 | struct in_addr vtep_ip; |
32367e7a MS |
157 | }; |
158 | ||
7f7e49d1 MS |
159 | #define WQ_EVPN_WRAPPER_TYPE_VRFROUTE 0x01 |
160 | #define WQ_EVPN_WRAPPER_TYPE_REM_ES 0x02 | |
161 | #define WQ_EVPN_WRAPPER_TYPE_REM_MACIP 0x03 | |
7e5b0b2b | 162 | #define WQ_EVPN_WRAPPER_TYPE_REM_VTEP 0x04 |
32367e7a | 163 | |
9d75e309 DL |
164 | /* %pRN is already a printer for route_nodes that just prints the prefix */ |
165 | #ifdef _FRR_ATTRIBUTE_PRINTFRR | |
166 | #pragma FRR printfrr_ext "%pZN" (struct route_node *) | |
167 | #endif | |
168 | ||
169 | printfrr_ext_autoreg_p("ZN", printfrr_zebra_node); | |
170 | static ssize_t printfrr_zebra_node(struct fbuf *buf, struct printfrr_eargs *ea, | |
171 | const void *ptr) | |
2263a412 | 172 | { |
9d75e309 DL |
173 | struct route_node *rn = (struct route_node *)ptr; |
174 | ssize_t rv = 0; | |
175 | ||
176 | /* just the table number? */ | |
177 | if (ea->fmt[0] == 't') { | |
178 | rib_dest_t *dest; | |
c2c02b76 DS |
179 | struct route_entry *re = NULL; |
180 | ||
9d75e309 | 181 | ea->fmt++; |
cb653491 | 182 | |
9d75e309 DL |
183 | if (!rn) |
184 | return bputch(buf, '!'); | |
c2c02b76 DS |
185 | |
186 | dest = rib_dest_from_rnode(rn); | |
187 | if (dest) | |
188 | re = re_list_first(&dest->routes); | |
189 | if (re) | |
9d75e309 DL |
190 | rv += bprintfrr(buf, "%u", re->table); |
191 | else | |
192 | rv += bputch(buf, '?'); | |
193 | ||
d62a17ae | 194 | } else { |
9d75e309 DL |
195 | char cbuf[PREFIX_STRLEN * 2 + 6]; |
196 | struct rib_table_info *info; | |
197 | ||
198 | if (!rn) | |
199 | return bputs(buf, "{(route_node *) NULL}"); | |
2263a412 | 200 | |
9d75e309 DL |
201 | srcdest_rnode2str(rn, cbuf, sizeof(cbuf)); |
202 | rv += bputs(buf, cbuf); | |
203 | ||
204 | info = srcdest_rnode_table_info(rn); | |
205 | if (info->safi == SAFI_MULTICAST) | |
206 | rv += bputs(buf, " (MRIB)"); | |
207 | } | |
208 | return rv; | |
2263a412 DL |
209 | } |
210 | ||
9d75e309 DL |
211 | #define rnode_debug(node, vrf_id, msg, ...) \ |
212 | zlog_debug("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
213 | ##__VA_ARGS__) | |
214 | ||
215 | #define rnode_info(node, vrf_id, msg, ...) \ | |
216 | zlog_info("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
217 | ##__VA_ARGS__) | |
218 | ||
61e6de9d DS |
219 | static char *_dump_re_status(const struct route_entry *re, char *buf, |
220 | size_t len) | |
221 | { | |
222 | if (re->status == 0) { | |
223 | snprintfrr(buf, len, "None "); | |
224 | return buf; | |
225 | } | |
226 | ||
227 | snprintfrr( | |
228 | buf, len, "%s%s%s%s%s%s%s", | |
229 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED) ? "Removed " : "", | |
230 | CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED) ? "Changed " : "", | |
231 | CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED) | |
232 | ? "Label Changed " | |
233 | : "", | |
234 | CHECK_FLAG(re->status, ROUTE_ENTRY_QUEUED) ? "Queued " : "", | |
235 | CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) ? "Installed " | |
236 | : "", | |
237 | CHECK_FLAG(re->status, ROUTE_ENTRY_FAILED) ? "Failed " : "", | |
238 | CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG) ? "Fib NHG " | |
239 | : ""); | |
240 | return buf; | |
241 | } | |
242 | ||
fd289fc8 | 243 | uint8_t route_distance(int type) |
40c7bdb0 | 244 | { |
fd289fc8 | 245 | uint8_t distance; |
40c7bdb0 | 246 | |
d62a17ae | 247 | if ((unsigned)type >= array_size(route_info)) |
248 | distance = 150; | |
249 | else | |
250 | distance = route_info[type].distance; | |
40c7bdb0 | 251 | |
d62a17ae | 252 | return distance; |
40c7bdb0 | 253 | } |
254 | ||
d7c0a89a | 255 | int is_zebra_valid_kernel_table(uint32_t table_id) |
7a4bb9c5 | 256 | { |
8f500a1c | 257 | #ifdef linux |
d62a17ae | 258 | if ((table_id == RT_TABLE_UNSPEC) || (table_id == RT_TABLE_LOCAL) |
259 | || (table_id == RT_TABLE_COMPAT)) | |
260 | return 0; | |
8f500a1c RW |
261 | #endif |
262 | ||
d62a17ae | 263 | return 1; |
7a4bb9c5 DS |
264 | } |
265 | ||
d7c0a89a | 266 | int is_zebra_main_routing_table(uint32_t table_id) |
7a4bb9c5 | 267 | { |
c447ad08 | 268 | if (table_id == RT_TABLE_MAIN) |
d62a17ae | 269 | return 1; |
270 | return 0; | |
7a4bb9c5 DS |
271 | } |
272 | ||
86391e56 | 273 | int zebra_check_addr(const struct prefix *p) |
0aabccc0 | 274 | { |
d62a17ae | 275 | if (p->family == AF_INET) { |
d7c0a89a | 276 | uint32_t addr; |
0aabccc0 | 277 | |
d62a17ae | 278 | addr = p->u.prefix4.s_addr; |
279 | addr = ntohl(addr); | |
0aabccc0 | 280 | |
d62a17ae | 281 | if (IPV4_NET127(addr) || IN_CLASSD(addr) |
282 | || IPV4_LINKLOCAL(addr)) | |
283 | return 0; | |
284 | } | |
285 | if (p->family == AF_INET6) { | |
286 | if (IN6_IS_ADDR_LOOPBACK(&p->u.prefix6)) | |
287 | return 0; | |
288 | if (IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
289 | return 0; | |
290 | } | |
291 | return 1; | |
0aabccc0 DD |
292 | } |
293 | ||
6e26278c DS |
294 | /** |
295 | * copy_nexthop - copy a nexthop to the rib structure. | |
296 | */ | |
d62a17ae | 297 | void route_entry_copy_nexthops(struct route_entry *re, struct nexthop *nh) |
6e26278c | 298 | { |
c415d895 MS |
299 | assert(!re->nhe->nhg.nexthop); |
300 | copy_nexthops(&re->nhe->nhg.nexthop, nh, NULL); | |
718e3744 | 301 | } |
302 | ||
5463ce26 MS |
303 | static void route_entry_attach_ref(struct route_entry *re, |
304 | struct nhg_hash_entry *new) | |
718e3744 | 305 | { |
0eb97b86 | 306 | re->nhe = new; |
5463ce26 | 307 | re->nhe_id = new->id; |
718e3744 | 308 | |
5463ce26 | 309 | zebra_nhg_increment_ref(new); |
718e3744 | 310 | } |
311 | ||
cd7108ba EDP |
312 | int route_entry_update_nhe(struct route_entry *re, |
313 | struct nhg_hash_entry *new_nhghe) | |
718e3744 | 314 | { |
377e29f7 | 315 | struct nhg_hash_entry *old; |
5463ce26 | 316 | int ret = 0; |
718e3744 | 317 | |
cd7108ba | 318 | if (new_nhghe == NULL) { |
c415d895 MS |
319 | if (re->nhe) |
320 | zebra_nhg_decrement_ref(re->nhe); | |
321 | re->nhe = NULL; | |
5463ce26 MS |
322 | goto done; |
323 | } | |
718e3744 | 324 | |
1f655680 | 325 | if ((re->nhe_id != 0) && re->nhe && (re->nhe != new_nhghe)) { |
c415d895 | 326 | old = re->nhe; |
718e3744 | 327 | |
cd7108ba | 328 | route_entry_attach_ref(re, new_nhghe); |
718e3744 | 329 | |
5463ce26 MS |
330 | if (old) |
331 | zebra_nhg_decrement_ref(old); | |
84a89a8d | 332 | } else if (!re->nhe) |
5463ce26 | 333 | /* This is the first time it's being attached */ |
cd7108ba | 334 | route_entry_attach_ref(re, new_nhghe); |
595db7f1 | 335 | |
5463ce26 MS |
336 | done: |
337 | return ret; | |
595db7f1 | 338 | } |
339 | ||
2e8db20d EDP |
340 | void rib_handle_nhg_replace(struct nhg_hash_entry *old_entry, |
341 | struct nhg_hash_entry *new_entry) | |
1f655680 SW |
342 | { |
343 | struct zebra_router_table *zrt; | |
344 | struct route_node *rn; | |
345 | struct route_entry *re, *next; | |
346 | ||
347 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || IS_ZEBRA_DEBUG_NHG_DETAIL) | |
348 | zlog_debug("%s: replacing routes nhe (%u) OLD %p NEW %p", | |
2e8db20d | 349 | __func__, new_entry->id, new_entry, old_entry); |
1f655680 SW |
350 | |
351 | /* We have to do them ALL */ | |
352 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) { | |
353 | for (rn = route_top(zrt->table); rn; | |
354 | rn = srcdest_route_next(rn)) { | |
355 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
2e8db20d EDP |
356 | if (re->nhe && re->nhe == old_entry) |
357 | route_entry_update_nhe(re, new_entry); | |
1f655680 SW |
358 | } |
359 | } | |
360 | } | |
361 | } | |
362 | ||
d62a17ae | 363 | struct route_entry *rib_match(afi_t afi, safi_t safi, vrf_id_t vrf_id, |
bc77c3bb MS |
364 | const union g_addr *addr, |
365 | struct route_node **rn_out) | |
d62a17ae | 366 | { |
367 | struct prefix p; | |
368 | struct route_table *table; | |
369 | struct route_node *rn; | |
5f7a4718 | 370 | struct route_entry *match = NULL; |
d62a17ae | 371 | |
372 | /* Lookup table. */ | |
373 | table = zebra_vrf_table(afi, safi, vrf_id); | |
374 | if (!table) | |
375 | return 0; | |
376 | ||
377 | memset(&p, 0, sizeof(struct prefix)); | |
378 | p.family = afi; | |
379 | if (afi == AFI_IP) { | |
380 | p.u.prefix4 = addr->ipv4; | |
936fbaef | 381 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 382 | } else { |
383 | p.u.prefix6 = addr->ipv6; | |
f4d81e55 | 384 | p.prefixlen = IPV6_MAX_BITLEN; |
d62a17ae | 385 | } |
718e3744 | 386 | |
c4efd0f4 | 387 | rn = route_node_match(table, &p); |
718e3744 | 388 | |
d62a17ae | 389 | while (rn) { |
5f7a4718 DS |
390 | rib_dest_t *dest; |
391 | ||
d62a17ae | 392 | route_unlock_node(rn); |
718e3744 | 393 | |
5f7a4718 | 394 | dest = rib_dest_from_rnode(rn); |
996c9314 LB |
395 | if (dest && dest->selected_fib |
396 | && !CHECK_FLAG(dest->selected_fib->status, | |
397 | ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 398 | match = dest->selected_fib; |
718e3744 | 399 | |
d62a17ae | 400 | /* If there is no selected route or matched route is EGP, go up |
401 | tree. */ | |
402 | if (!match) { | |
403 | do { | |
404 | rn = rn->parent; | |
405 | } while (rn && rn->info == NULL); | |
406 | if (rn) | |
407 | route_lock_node(rn); | |
408 | } else { | |
409 | if (match->type != ZEBRA_ROUTE_CONNECT) { | |
677c1dd5 DS |
410 | if (!CHECK_FLAG(match->status, |
411 | ROUTE_ENTRY_INSTALLED)) | |
d62a17ae | 412 | return NULL; |
413 | } | |
414 | ||
415 | if (rn_out) | |
416 | *rn_out = rn; | |
417 | return match; | |
418 | } | |
16814f96 | 419 | } |
d62a17ae | 420 | return NULL; |
421 | } | |
422 | ||
423 | struct route_entry *rib_match_ipv4_multicast(vrf_id_t vrf_id, | |
424 | struct in_addr addr, | |
425 | struct route_node **rn_out) | |
426 | { | |
427 | struct route_entry *re = NULL, *mre = NULL, *ure = NULL; | |
428 | struct route_node *m_rn = NULL, *u_rn = NULL; | |
429 | union g_addr gaddr = {.ipv4 = addr}; | |
430 | ||
526052fb | 431 | switch (zrouter.ipv4_multicast_mode) { |
d62a17ae | 432 | case MCAST_MRIB_ONLY: |
433 | return rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, | |
434 | rn_out); | |
435 | case MCAST_URIB_ONLY: | |
436 | return rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, rn_out); | |
437 | case MCAST_NO_CONFIG: | |
438 | case MCAST_MIX_MRIB_FIRST: | |
439 | re = mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, | |
440 | &m_rn); | |
441 | if (!mre) | |
442 | re = ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, | |
443 | &gaddr, &u_rn); | |
444 | break; | |
445 | case MCAST_MIX_DISTANCE: | |
446 | mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
447 | ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
448 | if (mre && ure) | |
449 | re = ure->distance < mre->distance ? ure : mre; | |
450 | else if (mre) | |
451 | re = mre; | |
452 | else if (ure) | |
453 | re = ure; | |
454 | break; | |
455 | case MCAST_MIX_PFXLEN: | |
456 | mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
457 | ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
458 | if (mre && ure) | |
459 | re = u_rn->p.prefixlen > m_rn->p.prefixlen ? ure : mre; | |
460 | else if (mre) | |
461 | re = mre; | |
462 | else if (ure) | |
463 | re = ure; | |
464 | break; | |
718e3744 | 465 | } |
33550aa8 | 466 | |
d62a17ae | 467 | if (rn_out) |
468 | *rn_out = (re == mre) ? m_rn : u_rn; | |
718e3744 | 469 | |
d62a17ae | 470 | if (IS_ZEBRA_DEBUG_RIB) { |
471 | char buf[BUFSIZ]; | |
472 | inet_ntop(AF_INET, &addr, buf, BUFSIZ); | |
4623d897 | 473 | |
bd47f3a3 JU |
474 | zlog_debug("%s: %s: vrf: %s(%u) found %s, using %s", __func__, |
475 | buf, vrf_id_to_name(vrf_id), vrf_id, | |
d62a17ae | 476 | mre ? (ure ? "MRIB+URIB" : "MRIB") |
477 | : ure ? "URIB" : "nothing", | |
478 | re == ure ? "URIB" : re == mre ? "MRIB" : "none"); | |
479 | } | |
480 | return re; | |
4623d897 DL |
481 | } |
482 | ||
d62a17ae | 483 | struct route_entry *rib_lookup_ipv4(struct prefix_ipv4 *p, vrf_id_t vrf_id) |
718e3744 | 484 | { |
d62a17ae | 485 | struct route_table *table; |
486 | struct route_node *rn; | |
5f7a4718 | 487 | struct route_entry *match = NULL; |
5f7a4718 | 488 | rib_dest_t *dest; |
718e3744 | 489 | |
d62a17ae | 490 | /* Lookup table. */ |
491 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
492 | if (!table) | |
493 | return 0; | |
718e3744 | 494 | |
d62a17ae | 495 | rn = route_node_lookup(table, (struct prefix *)p); |
718e3744 | 496 | |
d62a17ae | 497 | /* No route for this prefix. */ |
498 | if (!rn) | |
499 | return NULL; | |
718e3744 | 500 | |
d62a17ae | 501 | /* Unlock node. */ |
502 | route_unlock_node(rn); | |
5f7a4718 | 503 | dest = rib_dest_from_rnode(rn); |
718e3744 | 504 | |
996c9314 LB |
505 | if (dest && dest->selected_fib |
506 | && !CHECK_FLAG(dest->selected_fib->status, ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 507 | match = dest->selected_fib; |
718e3744 | 508 | |
d62a17ae | 509 | if (!match) |
510 | return NULL; | |
718e3744 | 511 | |
d62a17ae | 512 | if (match->type == ZEBRA_ROUTE_CONNECT) |
513 | return match; | |
f9e1b38e | 514 | |
677c1dd5 DS |
515 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_INSTALLED)) |
516 | return match; | |
718e3744 | 517 | |
d62a17ae | 518 | return NULL; |
718e3744 | 519 | } |
520 | ||
a64448ba DS |
521 | /* |
522 | * Is this RIB labeled-unicast? It must be of type BGP and all paths | |
523 | * (nexthops) must have a label. | |
524 | */ | |
d62a17ae | 525 | int zebra_rib_labeled_unicast(struct route_entry *re) |
a64448ba | 526 | { |
d62a17ae | 527 | struct nexthop *nexthop = NULL; |
a64448ba | 528 | |
d62a17ae | 529 | if (re->type != ZEBRA_ROUTE_BGP) |
530 | return 0; | |
a64448ba | 531 | |
c415d895 | 532 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 533 | if (!nexthop->nh_label || !nexthop->nh_label->num_labels) |
534 | return 0; | |
6b0655a2 | 535 | |
d62a17ae | 536 | return 1; |
a64448ba | 537 | } |
718e3744 | 538 | |
6ae24471 DS |
539 | /* Update flag indicates whether this is a "replace" or not. Currently, this |
540 | * is only used for IPv4. | |
541 | */ | |
0c555cc6 DS |
542 | void rib_install_kernel(struct route_node *rn, struct route_entry *re, |
543 | struct route_entry *old) | |
718e3744 | 544 | { |
d62a17ae | 545 | struct nexthop *nexthop; |
630d5962 | 546 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
d62a17ae | 547 | struct zebra_vrf *zvrf = vrf_info_lookup(re->vrf_id); |
97f5b441 MS |
548 | const struct prefix *p, *src_p; |
549 | enum zebra_dplane_result ret; | |
550 | ||
551 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
718e3744 | 552 | |
d62a17ae | 553 | srcdest_rnode_prefixes(rn, &p, &src_p); |
416ec78d | 554 | |
d62a17ae | 555 | if (info->safi != SAFI_UNICAST) { |
c415d895 | 556 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 557 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 558 | return; |
d62a17ae | 559 | } |
718e3744 | 560 | |
9ef49038 | 561 | |
8dfbc657 SW |
562 | /* |
563 | * Install the resolved nexthop object first. | |
564 | */ | |
c415d895 | 565 | zebra_nhg_install_kernel(re->nhe); |
8dfbc657 | 566 | |
2063a814 DS |
567 | /* |
568 | * If this is a replace to a new RE let the originator of the RE | |
569 | * know that they've lost | |
570 | */ | |
9a9f8926 | 571 | if (old && (old != re) && (old->type != re->type)) |
77b38a4a S |
572 | zsend_route_notify_owner(old, p, ZAPI_ROUTE_BETTER_ADMIN_WON, |
573 | info->afi, info->safi); | |
25b9cb0c | 574 | |
97f5b441 MS |
575 | /* Update fib selection */ |
576 | dest->selected_fib = re; | |
577 | ||
d62a17ae | 578 | /* |
579 | * Make sure we update the FPM any time we send new information to | |
580 | * the kernel. | |
581 | */ | |
582 | hook_call(rib_update, rn, "installing in kernel"); | |
97f5b441 MS |
583 | |
584 | /* Send add or update */ | |
8263d1d0 | 585 | if (old) |
97f5b441 | 586 | ret = dplane_route_update(rn, re, old); |
5709131c | 587 | else |
97f5b441 | 588 | ret = dplane_route_add(rn, re); |
97f5b441 MS |
589 | |
590 | switch (ret) { | |
ea1c14f6 | 591 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
60f98b23 | 592 | SET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
efe6c026 MS |
593 | |
594 | if (old) { | |
60f98b23 | 595 | SET_FLAG(old->status, ROUTE_ENTRY_QUEUED); |
efe6c026 MS |
596 | |
597 | /* Free old FIB nexthop group */ | |
7483dcbe | 598 | UNSET_FLAG(old->status, ROUTE_ENTRY_USE_FIB_NHG); |
efe6c026 MS |
599 | if (old->fib_ng.nexthop) { |
600 | nexthops_free(old->fib_ng.nexthop); | |
601 | old->fib_ng.nexthop = NULL; | |
602 | } | |
efe6c026 MS |
603 | } |
604 | ||
97f5b441 MS |
605 | if (zvrf) |
606 | zvrf->installs_queued++; | |
1e885672 | 607 | break; |
ea1c14f6 | 608 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 | 609 | { |
97f5b441 | 610 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, |
e658173a DS |
611 | "%u:%u:%pRN: Failed to enqueue dataplane install", |
612 | re->vrf_id, re->table, rn); | |
1e885672 | 613 | break; |
97f5b441 | 614 | } |
ea1c14f6 | 615 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
97f5b441 MS |
616 | if (zvrf) |
617 | zvrf->installs++; | |
1e885672 DS |
618 | break; |
619 | } | |
d62a17ae | 620 | |
0c555cc6 | 621 | return; |
718e3744 | 622 | } |
623 | ||
624 | /* Uninstall the route from kernel. */ | |
0c555cc6 | 625 | void rib_uninstall_kernel(struct route_node *rn, struct route_entry *re) |
718e3744 | 626 | { |
d62a17ae | 627 | struct nexthop *nexthop; |
630d5962 | 628 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
d62a17ae | 629 | struct zebra_vrf *zvrf = vrf_info_lookup(re->vrf_id); |
05737783 | 630 | |
d62a17ae | 631 | if (info->safi != SAFI_UNICAST) { |
677c1dd5 | 632 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 633 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d6792f9d | 634 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 635 | return; |
d62a17ae | 636 | } |
416ec78d | 637 | |
d62a17ae | 638 | /* |
639 | * Make sure we update the FPM any time we send new information to | |
97f5b441 | 640 | * the dataplane. |
d62a17ae | 641 | */ |
642 | hook_call(rib_update, rn, "uninstalling from kernel"); | |
97f5b441 MS |
643 | |
644 | switch (dplane_route_delete(rn, re)) { | |
ea1c14f6 | 645 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
97f5b441 MS |
646 | if (zvrf) |
647 | zvrf->removals_queued++; | |
1e885672 | 648 | break; |
ea1c14f6 | 649 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 | 650 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, |
e658173a DS |
651 | "%u:%pRN: Failed to enqueue dataplane uninstall", |
652 | re->vrf_id, rn); | |
1e885672 | 653 | break; |
ea1c14f6 | 654 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
1e885672 DS |
655 | if (zvrf) |
656 | zvrf->removals++; | |
657 | break; | |
658 | } | |
718e3744 | 659 | |
0c555cc6 | 660 | return; |
718e3744 | 661 | } |
662 | ||
9fd92e3c AS |
663 | /* |
664 | * rib_can_delete_dest | |
665 | * | |
2951a7a4 | 666 | * Returns true if the given dest can be deleted from the table. |
9fd92e3c | 667 | */ |
d62a17ae | 668 | static int rib_can_delete_dest(rib_dest_t *dest) |
9fd92e3c | 669 | { |
045207e2 | 670 | if (re_list_first(&dest->routes)) { |
d62a17ae | 671 | return 0; |
672 | } | |
9fd92e3c | 673 | |
c86ba6c2 DS |
674 | /* |
675 | * Unresolved rnh's are stored on the default route's list | |
676 | * | |
677 | * dest->rnode can also be the source prefix node in an | |
678 | * ipv6 sourcedest table. Fortunately the prefix of a | |
679 | * source prefix node can never be the default prefix. | |
680 | */ | |
681 | if (is_default_prefix(&dest->rnode->p)) | |
682 | return 0; | |
683 | ||
d62a17ae | 684 | /* |
685 | * Don't delete the dest if we have to update the FPM about this | |
686 | * prefix. | |
687 | */ | |
688 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM) | |
689 | || CHECK_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM)) | |
690 | return 0; | |
5adc2528 | 691 | |
d62a17ae | 692 | return 1; |
9fd92e3c AS |
693 | } |
694 | ||
699dae23 DS |
695 | void zebra_rib_evaluate_rn_nexthops(struct route_node *rn, uint32_t seq) |
696 | { | |
697 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
699dae23 DS |
698 | struct rnh *rnh; |
699 | ||
700 | /* | |
50872b08 | 701 | * We are storing the rnh's associated withb |
699dae23 DS |
702 | * the tracked nexthop as a list of the rn's. |
703 | * Unresolved rnh's are placed at the top | |
704 | * of the tree list.( 0.0.0.0/0 for v4 and 0::0/0 for v6 ) | |
705 | * As such for each rn we need to walk up the tree | |
706 | * and see if any rnh's need to see if they | |
707 | * would match a more specific route | |
708 | */ | |
709 | while (rn) { | |
e658173a | 710 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) |
15569c58 | 711 | zlog_debug( |
e658173a DS |
712 | "%s: %pRN Being examined for Nexthop Tracking Count: %zd", |
713 | __func__, rn, | |
15569c58 | 714 | dest ? rnh_list_count(&dest->nht) : 0); |
e658173a | 715 | |
699dae23 DS |
716 | if (!dest) { |
717 | rn = rn->parent; | |
718 | if (rn) | |
719 | dest = rib_dest_from_rnode(rn); | |
720 | continue; | |
721 | } | |
722 | /* | |
723 | * If we have any rnh's stored in the nht list | |
724 | * then we know that this route node was used for | |
725 | * nht resolution and as such we need to call the | |
726 | * nexthop tracking evaluation code | |
727 | */ | |
739c9c90 | 728 | frr_each_safe(rnh_list, &dest->nht, rnh) { |
699dae23 DS |
729 | struct zebra_vrf *zvrf = |
730 | zebra_vrf_lookup_by_id(rnh->vrf_id); | |
731 | struct prefix *p = &rnh->node->p; | |
732 | ||
e658173a | 733 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) |
bd47f3a3 | 734 | zlog_debug( |
6071e5e9 DS |
735 | "%s(%u):%pRN has Nexthop(%pFX) depending on it, evaluating %u:%u", |
736 | zvrf_name(zvrf), zvrf_id(zvrf), rn, p, | |
737 | seq, rnh->seqno); | |
699dae23 DS |
738 | |
739 | /* | |
740 | * If we have evaluated this node on this pass | |
741 | * already, due to following the tree up | |
742 | * then we know that we can move onto the next | |
743 | * rnh to process. | |
744 | * | |
745 | * Additionally we call zebra_evaluate_rnh | |
746 | * when we gc the dest. In this case we know | |
747 | * that there must be no other re's where | |
748 | * we were originally as such we know that | |
749 | * that sequence number is ok to respect. | |
750 | */ | |
50872b08 DS |
751 | if (rnh->seqno == seq) { |
752 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) | |
753 | zlog_debug( | |
1d5453d6 | 754 | " Node processed and moved already"); |
699dae23 | 755 | continue; |
50872b08 | 756 | } |
699dae23 DS |
757 | |
758 | rnh->seqno = seq; | |
d597533a DS |
759 | zebra_evaluate_rnh(zvrf, family2afi(p->family), 0, p, |
760 | rnh->safi); | |
699dae23 DS |
761 | } |
762 | ||
763 | rn = rn->parent; | |
764 | if (rn) | |
765 | dest = rib_dest_from_rnode(rn); | |
766 | } | |
767 | } | |
768 | ||
9fd92e3c AS |
769 | /* |
770 | * rib_gc_dest | |
771 | * | |
772 | * Garbage collect the rib dest corresponding to the given route node | |
773 | * if appropriate. | |
774 | * | |
2951a7a4 | 775 | * Returns true if the dest was deleted, false otherwise. |
9fd92e3c | 776 | */ |
d62a17ae | 777 | int rib_gc_dest(struct route_node *rn) |
9fd92e3c | 778 | { |
d62a17ae | 779 | rib_dest_t *dest; |
9fd92e3c | 780 | |
d62a17ae | 781 | dest = rib_dest_from_rnode(rn); |
782 | if (!dest) | |
783 | return 0; | |
9fd92e3c | 784 | |
d62a17ae | 785 | if (!rib_can_delete_dest(dest)) |
786 | return 0; | |
9fd92e3c | 787 | |
c9abf558 DS |
788 | if (IS_ZEBRA_DEBUG_RIB) { |
789 | struct zebra_vrf *zvrf; | |
790 | ||
791 | zvrf = rib_dest_vrf(dest); | |
d62a17ae | 792 | rnode_debug(rn, zvrf_id(zvrf), "removing dest from table"); |
c9abf558 | 793 | } |
9fd92e3c | 794 | |
699dae23 DS |
795 | zebra_rib_evaluate_rn_nexthops(rn, zebra_router_get_next_sequence()); |
796 | ||
d62a17ae | 797 | dest->rnode = NULL; |
aa57abfb | 798 | rnh_list_fini(&dest->nht); |
d62a17ae | 799 | XFREE(MTYPE_RIB_DEST, dest); |
800 | rn->info = NULL; | |
9fd92e3c | 801 | |
d62a17ae | 802 | /* |
803 | * Release the one reference that we keep on the route node. | |
804 | */ | |
805 | route_unlock_node(rn); | |
806 | return 1; | |
9fd92e3c AS |
807 | } |
808 | ||
224ccf29 DL |
809 | void zebra_rtable_node_cleanup(struct route_table *table, |
810 | struct route_node *node) | |
811 | { | |
812 | struct route_entry *re, *next; | |
813 | ||
814 | RNODE_FOREACH_RE_SAFE (node, re, next) { | |
815 | rib_unlink(node, re); | |
816 | } | |
817 | ||
818 | if (node->info) { | |
819 | rib_dest_t *dest = node->info; | |
820 | ||
821 | rnh_list_fini(&dest->nht); | |
822 | XFREE(MTYPE_RIB_DEST, node->info); | |
823 | } | |
824 | } | |
825 | ||
d62a17ae | 826 | static void rib_process_add_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
827 | struct route_entry *new) | |
3e5c6e00 | 828 | { |
d62a17ae | 829 | hook_call(rib_update, rn, "new route selected"); |
3e5c6e00 | 830 | |
d62a17ae | 831 | /* Update real nexthop. This may actually determine if nexthop is active |
832 | * or not. */ | |
c415d895 | 833 | if (!nexthop_group_active_nexthop_num(&(new->nhe->nhg))) { |
d62a17ae | 834 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
835 | return; | |
836 | } | |
3e5c6e00 | 837 | |
e658173a DS |
838 | if (IS_ZEBRA_DEBUG_RIB) |
839 | zlog_debug("%s(%u:%u):%pRN: Adding route rn %p, re %p (%s)", | |
840 | zvrf_name(zvrf), zvrf_id(zvrf), new->table, rn, rn, | |
c2c02b76 | 841 | new, zebra_route_string(new->type)); |
3e5c6e00 | 842 | |
d62a17ae | 843 | /* If labeled-unicast route, install transit LSP. */ |
844 | if (zebra_rib_labeled_unicast(new)) | |
845 | zebra_mpls_lsp_install(zvrf, rn, new); | |
a64448ba | 846 | |
3cdba47a | 847 | rib_install_kernel(rn, new, NULL); |
3e5c6e00 | 848 | |
d62a17ae | 849 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 850 | } |
851 | ||
d62a17ae | 852 | static void rib_process_del_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
853 | struct route_entry *old) | |
3e5c6e00 | 854 | { |
d62a17ae | 855 | hook_call(rib_update, rn, "removing existing route"); |
3e5c6e00 | 856 | |
d62a17ae | 857 | /* Uninstall from kernel. */ |
e658173a DS |
858 | if (IS_ZEBRA_DEBUG_RIB) |
859 | zlog_debug("%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s)", | |
860 | zvrf_name(zvrf), zvrf_id(zvrf), old->table, rn, rn, | |
c2c02b76 | 861 | old, zebra_route_string(old->type)); |
3e5c6e00 | 862 | |
d62a17ae | 863 | /* If labeled-unicast route, uninstall transit LSP. */ |
864 | if (zebra_rib_labeled_unicast(old)) | |
865 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
866 | ||
3cdba47a | 867 | rib_uninstall_kernel(rn, old); |
d62a17ae | 868 | |
869 | /* Update nexthop for route, reset changed flag. */ | |
ef57f35f DL |
870 | /* Note: this code also handles the Linux case when an interface goes |
871 | * down, causing the kernel to delete routes without sending DELROUTE | |
872 | * notifications | |
873 | */ | |
6883bf8d | 874 | if (RIB_KERNEL_ROUTE(old)) |
212df1de PG |
875 | SET_FLAG(old->status, ROUTE_ENTRY_REMOVED); |
876 | else | |
877 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); | |
d62a17ae | 878 | } |
879 | ||
880 | static void rib_process_update_fib(struct zebra_vrf *zvrf, | |
881 | struct route_node *rn, | |
882 | struct route_entry *old, | |
883 | struct route_entry *new) | |
884 | { | |
d62a17ae | 885 | int nh_active = 0; |
d62a17ae | 886 | |
887 | /* | |
888 | * We have to install or update if a new route has been selected or | |
889 | * something has changed. | |
890 | */ | |
891 | if (new != old || CHECK_FLAG(new->status, ROUTE_ENTRY_CHANGED)) { | |
892 | hook_call(rib_update, rn, "updating existing route"); | |
893 | ||
894 | /* Update the nexthop; we could determine here that nexthop is | |
895 | * inactive. */ | |
c415d895 | 896 | if (nexthop_group_active_nexthop_num(&(new->nhe->nhg))) |
d62a17ae | 897 | nh_active = 1; |
898 | ||
899 | /* If nexthop is active, install the selected route, if | |
900 | * appropriate. If | |
901 | * the install succeeds, cleanup flags for prior route, if | |
902 | * different from | |
903 | * newly selected. | |
904 | */ | |
905 | if (nh_active) { | |
906 | if (IS_ZEBRA_DEBUG_RIB) { | |
d62a17ae | 907 | if (new != old) |
908 | zlog_debug( | |
e658173a | 909 | "%s(%u:%u):%pRN: Updating route rn %p, re %p (%s) old %p (%s)", |
bd47f3a3 | 910 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 911 | new->table, rn, rn, new, |
2da33d6b DS |
912 | zebra_route_string(new->type), |
913 | old, | |
914 | zebra_route_string(old->type)); | |
d62a17ae | 915 | else |
916 | zlog_debug( | |
e658173a | 917 | "%s(%u:%u):%pRN: Updating route rn %p, re %p (%s)", |
bd47f3a3 | 918 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 919 | new->table, rn, rn, new, |
2da33d6b | 920 | zebra_route_string(new->type)); |
d62a17ae | 921 | } |
922 | ||
923 | /* If labeled-unicast route, uninstall transit LSP. */ | |
924 | if (zebra_rib_labeled_unicast(old)) | |
925 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
926 | ||
3cdba47a DS |
927 | /* |
928 | * Non-system route should be installed. | |
929 | * If labeled-unicast route, install transit | |
930 | * LSP. | |
931 | */ | |
932 | if (zebra_rib_labeled_unicast(new)) | |
933 | zebra_mpls_lsp_install(zvrf, rn, new); | |
d62a17ae | 934 | |
3cdba47a | 935 | rib_install_kernel(rn, new, old); |
d62a17ae | 936 | } |
a64448ba | 937 | |
d62a17ae | 938 | /* |
939 | * If nexthop for selected route is not active or install | |
940 | * failed, we | |
941 | * may need to uninstall and delete for redistribution. | |
942 | */ | |
ed216282 | 943 | if (!nh_active) { |
d62a17ae | 944 | if (IS_ZEBRA_DEBUG_RIB) { |
d62a17ae | 945 | if (new != old) |
946 | zlog_debug( | |
e658173a | 947 | "%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s) old %p (%s) - nexthop inactive", |
bd47f3a3 | 948 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 949 | new->table, rn, rn, new, |
2da33d6b DS |
950 | zebra_route_string(new->type), |
951 | old, | |
952 | zebra_route_string(old->type)); | |
d62a17ae | 953 | else |
954 | zlog_debug( | |
e658173a | 955 | "%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s) - nexthop inactive", |
bd47f3a3 | 956 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 957 | new->table, rn, rn, new, |
2da33d6b | 958 | zebra_route_string(new->type)); |
d62a17ae | 959 | } |
960 | ||
5c18e662 DS |
961 | /* |
962 | * When we have gotten to this point | |
963 | * the new route entry has no nexthops | |
964 | * that are usable and as such we need | |
965 | * to remove the old route, but only | |
966 | * if we were the one who installed | |
967 | * the old route | |
968 | */ | |
969 | if (!RIB_SYSTEM_ROUTE(old)) { | |
970 | /* If labeled-unicast route, uninstall transit | |
971 | * LSP. */ | |
972 | if (zebra_rib_labeled_unicast(old)) | |
973 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
d62a17ae | 974 | |
5c18e662 DS |
975 | rib_uninstall_kernel(rn, old); |
976 | } | |
d62a17ae | 977 | } |
978 | } else { | |
979 | /* | |
980 | * Same route selected; check if in the FIB and if not, | |
3cdba47a DS |
981 | * re-install. This is housekeeping code to deal with |
982 | * race conditions in kernel with linux netlink reporting | |
983 | * interface up before IPv4 or IPv6 protocol is ready | |
d62a17ae | 984 | * to add routes. |
985 | */ | |
3cdba47a DS |
986 | if (!CHECK_FLAG(new->status, ROUTE_ENTRY_INSTALLED) || |
987 | RIB_SYSTEM_ROUTE(new)) | |
677c1dd5 | 988 | rib_install_kernel(rn, new, NULL); |
d62a17ae | 989 | } |
990 | ||
991 | /* Update prior route. */ | |
6883bf8d | 992 | if (new != old) |
d62a17ae | 993 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 994 | |
d62a17ae | 995 | /* Clear changed flag. */ |
996 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); | |
3e5c6e00 | 997 | } |
998 | ||
d62a17ae | 999 | /* Check if 'alternate' RIB entry is better than 'current'. */ |
1000 | static struct route_entry *rib_choose_best(struct route_entry *current, | |
1001 | struct route_entry *alternate) | |
1002 | { | |
1003 | if (current == NULL) | |
1004 | return alternate; | |
1005 | ||
1006 | /* filter route selection in following order: | |
1007 | * - connected beats other types | |
fec4ca19 | 1008 | * - if both connected, loopback or vrf wins |
d62a17ae | 1009 | * - lower distance beats higher |
1010 | * - lower metric beats higher for equal distance | |
1011 | * - last, hence oldest, route wins tie break. | |
1012 | */ | |
1013 | ||
fec4ca19 DS |
1014 | /* Connected routes. Check to see if either are a vrf |
1015 | * or loopback interface. If not, pick the last connected | |
d62a17ae | 1016 | * route of the set of lowest metric connected routes. |
1017 | */ | |
1018 | if (alternate->type == ZEBRA_ROUTE_CONNECT) { | |
fec4ca19 DS |
1019 | if (current->type != ZEBRA_ROUTE_CONNECT) |
1020 | return alternate; | |
1021 | ||
1022 | /* both are connected. are either loop or vrf? */ | |
1023 | struct nexthop *nexthop = NULL; | |
1024 | ||
c415d895 | 1025 | for (ALL_NEXTHOPS(alternate->nhe->nhg, nexthop)) { |
873fde8c | 1026 | struct interface *ifp = if_lookup_by_index( |
1027 | nexthop->ifindex, alternate->vrf_id); | |
1028 | ||
1029 | if (ifp && if_is_loopback_or_vrf(ifp)) | |
fec4ca19 DS |
1030 | return alternate; |
1031 | } | |
1032 | ||
c415d895 | 1033 | for (ALL_NEXTHOPS(current->nhe->nhg, nexthop)) { |
873fde8c | 1034 | struct interface *ifp = if_lookup_by_index( |
1035 | nexthop->ifindex, current->vrf_id); | |
1036 | ||
1037 | if (ifp && if_is_loopback_or_vrf(ifp)) | |
fec4ca19 DS |
1038 | return current; |
1039 | } | |
1040 | ||
1041 | /* Neither are loop or vrf so pick best metric */ | |
1042 | if (alternate->metric <= current->metric) | |
d62a17ae | 1043 | return alternate; |
1044 | ||
1045 | return current; | |
1046 | } | |
3e5c6e00 | 1047 | |
d62a17ae | 1048 | if (current->type == ZEBRA_ROUTE_CONNECT) |
1049 | return current; | |
3e5c6e00 | 1050 | |
d62a17ae | 1051 | /* higher distance loses */ |
1052 | if (alternate->distance < current->distance) | |
1053 | return alternate; | |
1054 | if (current->distance < alternate->distance) | |
1055 | return current; | |
3e5c6e00 | 1056 | |
d62a17ae | 1057 | /* metric tie-breaks equal distance */ |
1058 | if (alternate->metric <= current->metric) | |
1059 | return alternate; | |
3e5c6e00 | 1060 | |
d62a17ae | 1061 | return current; |
3e5c6e00 | 1062 | } |
1063 | ||
d62a17ae | 1064 | /* Core function for processing routing information base. */ |
1065 | static void rib_process(struct route_node *rn) | |
1066 | { | |
1067 | struct route_entry *re; | |
1068 | struct route_entry *next; | |
1069 | struct route_entry *old_selected = NULL; | |
1070 | struct route_entry *new_selected = NULL; | |
1071 | struct route_entry *old_fib = NULL; | |
1072 | struct route_entry *new_fib = NULL; | |
1073 | struct route_entry *best = NULL; | |
d62a17ae | 1074 | rib_dest_t *dest; |
1075 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1076 | struct vrf *vrf; |
86391e56 MS |
1077 | const struct prefix *p, *src_p; |
1078 | ||
d62a17ae | 1079 | srcdest_rnode_prefixes(rn, &p, &src_p); |
1080 | vrf_id_t vrf_id = VRF_UNKNOWN; | |
1081 | ||
1082 | assert(rn); | |
1083 | ||
1084 | dest = rib_dest_from_rnode(rn); | |
f0afc61d DS |
1085 | /* |
1086 | * We have an enqueued node with nothing to process here | |
1087 | * let's just finish up and return; | |
1088 | */ | |
1089 | if (!dest) | |
1090 | return; | |
bab85d4f | 1091 | |
f0afc61d DS |
1092 | zvrf = rib_dest_vrf(dest); |
1093 | vrf_id = zvrf_id(zvrf); | |
bd47f3a3 | 1094 | |
bd47f3a3 | 1095 | vrf = vrf_lookup_by_id(vrf_id); |
bab85d4f | 1096 | |
607425e5 DS |
1097 | /* |
1098 | * we can have rn's that have a NULL info pointer | |
1099 | * (dest). As such let's not let the deref happen | |
1100 | * additionally we know RNODE_FOREACH_RE_SAFE | |
1101 | * will not iterate so we are ok. | |
1102 | */ | |
f0afc61d DS |
1103 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1104 | struct route_entry *re = re_list_first(&dest->routes); | |
f5158712 | 1105 | |
e658173a DS |
1106 | zlog_debug("%s(%u:%u):%pRN: Processing rn %p", |
1107 | VRF_LOGNAME(vrf), vrf_id, re->table, rn, | |
f0afc61d | 1108 | rn); |
f5158712 | 1109 | } |
5f7a4718 | 1110 | |
f0afc61d DS |
1111 | old_fib = dest->selected_fib; |
1112 | ||
a2addae8 | 1113 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
61e6de9d DS |
1114 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1115 | char flags_buf[128]; | |
1116 | char status_buf[128]; | |
1117 | ||
d62a17ae | 1118 | zlog_debug( |
e658173a DS |
1119 | "%s(%u:%u):%pRN: Examine re %p (%s) status: %sflags: %sdist %d metric %d", |
1120 | VRF_LOGNAME(vrf), vrf_id, re->table, rn, re, | |
61e6de9d DS |
1121 | zebra_route_string(re->type), |
1122 | _dump_re_status(re, status_buf, | |
1123 | sizeof(status_buf)), | |
1124 | zclient_dump_route_flags(re->flags, flags_buf, | |
1125 | sizeof(flags_buf)), | |
1126 | re->distance, re->metric); | |
1127 | } | |
d62a17ae | 1128 | |
d62a17ae | 1129 | /* Currently selected re. */ |
1130 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) { | |
1131 | assert(old_selected == NULL); | |
1132 | old_selected = re; | |
1133 | } | |
bab85d4f | 1134 | |
d62a17ae | 1135 | /* Skip deleted entries from selection */ |
1136 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1137 | continue; | |
1138 | ||
9d221fac DS |
1139 | /* |
1140 | * If the route entry has changed, verify/resolve | |
1141 | * the nexthops associated with the entry. | |
1142 | * | |
1143 | * In any event if we have nexthops that are not active | |
1144 | * then we cannot use this particular route entry so | |
1145 | * skip it. | |
d62a17ae | 1146 | */ |
9d221fac DS |
1147 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED)) { |
1148 | if (!nexthop_active_update(rn, re)) { | |
7e010c4b DS |
1149 | const struct prefix *p; |
1150 | struct rib_table_info *info; | |
1151 | ||
9d221fac DS |
1152 | if (re->type == ZEBRA_ROUTE_TABLE) { |
1153 | /* XXX: HERE BE DRAGONS!!!!! | |
1154 | * In all honesty, I have not yet | |
1155 | * figured out what this part does or | |
1156 | * why the ROUTE_ENTRY_CHANGED test | |
1157 | * above is correct or why we need to | |
1158 | * delete a route here, and also not | |
1159 | * whether this concerns both selected | |
1160 | * and fib route, or only selected | |
1161 | * or only fib | |
1162 | * | |
1163 | * This entry was denied by the 'ip | |
1164 | * protocol | |
1165 | * table' route-map, we need to delete | |
1166 | * it */ | |
1167 | if (re != old_selected) { | |
1168 | if (IS_ZEBRA_DEBUG_RIB) | |
1169 | zlog_debug( | |
e658173a | 1170 | "%s: %s(%u):%pRN: imported via import-table but denied by the ip protocol table route-map", |
9d221fac DS |
1171 | __func__, |
1172 | VRF_LOGNAME( | |
1173 | vrf), | |
e658173a | 1174 | vrf_id, rn); |
9d221fac DS |
1175 | rib_unlink(rn, re); |
1176 | } else | |
1177 | SET_FLAG(re->status, | |
1178 | ROUTE_ENTRY_REMOVED); | |
1179 | } | |
d62a17ae | 1180 | |
7e010c4b DS |
1181 | info = srcdest_rnode_table_info(rn); |
1182 | srcdest_rnode_prefixes(rn, &p, NULL); | |
1183 | zsend_route_notify_owner(re, p, | |
1184 | ZAPI_ROUTE_FAIL_INSTALL, | |
1185 | info->afi, info->safi); | |
9d221fac DS |
1186 | continue; |
1187 | } | |
1188 | } else { | |
1189 | /* | |
1190 | * If the re has not changed and the nhg we have is | |
1191 | * not usable, then we cannot use this route entry | |
1192 | * for consideration, as that the route will just | |
1193 | * not install if it is selected. | |
1194 | */ | |
1195 | if (!nexthop_group_active_nexthop_num(&re->nhe->nhg)) | |
1196 | continue; | |
d62a17ae | 1197 | } |
bab85d4f | 1198 | |
d62a17ae | 1199 | /* Infinite distance. */ |
3332f4f0 DS |
1200 | if (re->distance == DISTANCE_INFINITY && |
1201 | re->type != ZEBRA_ROUTE_KERNEL) { | |
d62a17ae | 1202 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
1203 | continue; | |
1204 | } | |
bab85d4f | 1205 | |
d62a17ae | 1206 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_FIB_OVERRIDE)) { |
1207 | best = rib_choose_best(new_fib, re); | |
1208 | if (new_fib && best != new_fib) | |
1209 | UNSET_FLAG(new_fib->status, | |
1210 | ROUTE_ENTRY_CHANGED); | |
1211 | new_fib = best; | |
1212 | } else { | |
1213 | best = rib_choose_best(new_selected, re); | |
1214 | if (new_selected && best != new_selected) | |
1215 | UNSET_FLAG(new_selected->status, | |
1216 | ROUTE_ENTRY_CHANGED); | |
1217 | new_selected = best; | |
1218 | } | |
1219 | if (best != re) | |
1220 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
1221 | } /* RNODE_FOREACH_RE */ | |
1222 | ||
1223 | /* If no FIB override route, use the selected route also for FIB */ | |
1224 | if (new_fib == NULL) | |
1225 | new_fib = new_selected; | |
1226 | ||
1227 | /* After the cycle is finished, the following pointers will be set: | |
1228 | * old_selected --- RE entry currently having SELECTED | |
1229 | * new_selected --- RE entry that is newly SELECTED | |
1230 | * old_fib --- RE entry currently in kernel FIB | |
1231 | * new_fib --- RE entry that is newly to be in kernel FIB | |
1232 | * | |
1233 | * new_selected will get SELECTED flag, and is going to be redistributed | |
1234 | * the zclients. new_fib (which can be new_selected) will be installed | |
1235 | * in kernel. | |
1236 | */ | |
1237 | ||
1238 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
c2c02b76 DS |
1239 | struct route_entry *entry; |
1240 | ||
1241 | entry = old_selected | |
1242 | ? old_selected | |
1243 | : new_selected | |
1244 | ? new_selected | |
1245 | : old_fib ? old_fib | |
1246 | : new_fib ? new_fib : NULL; | |
1247 | ||
d62a17ae | 1248 | zlog_debug( |
e658173a DS |
1249 | "%s(%u:%u):%pRN: After processing: old_selected %p new_selected %p old_fib %p new_fib %p", |
1250 | VRF_LOGNAME(vrf), vrf_id, entry ? entry->table : 0, rn, | |
c2c02b76 DS |
1251 | (void *)old_selected, (void *)new_selected, |
1252 | (void *)old_fib, (void *)new_fib); | |
d62a17ae | 1253 | } |
446bb95e | 1254 | |
d62a17ae | 1255 | /* Buffer ROUTE_ENTRY_CHANGED here, because it will get cleared if |
1256 | * fib == selected */ | |
9d303b37 DL |
1257 | bool selected_changed = new_selected && CHECK_FLAG(new_selected->status, |
1258 | ROUTE_ENTRY_CHANGED); | |
d62a17ae | 1259 | |
8cb41cd6 | 1260 | /* Update SELECTED entry */ |
d62a17ae | 1261 | if (old_selected != new_selected || selected_changed) { |
93bdadae | 1262 | |
6883bf8d | 1263 | if (new_selected && new_selected != new_fib) |
d62a17ae | 1264 | UNSET_FLAG(new_selected->status, ROUTE_ENTRY_CHANGED); |
41ec9222 | 1265 | |
3cdba47a | 1266 | if (new_selected) |
5af4b346 MS |
1267 | SET_FLAG(new_selected->flags, ZEBRA_FLAG_SELECTED); |
1268 | ||
d62a17ae | 1269 | if (old_selected) { |
40f321c0 MS |
1270 | /* |
1271 | * If we're removing the old entry, we should tell | |
1272 | * redist subscribers about that *if* they aren't | |
1273 | * going to see a redist for the new entry. | |
1274 | */ | |
1275 | if (!new_selected || CHECK_FLAG(old_selected->status, | |
1276 | ROUTE_ENTRY_REMOVED)) | |
1277 | redistribute_delete(p, src_p, | |
1278 | old_selected, | |
1279 | new_selected); | |
1280 | ||
d62a17ae | 1281 | if (old_selected != new_selected) |
1282 | UNSET_FLAG(old_selected->flags, | |
1283 | ZEBRA_FLAG_SELECTED); | |
f857321e | 1284 | } |
d62a17ae | 1285 | } |
3e5c6e00 | 1286 | |
f68ce976 DL |
1287 | /* Update fib according to selection results */ |
1288 | if (new_fib && old_fib) | |
1289 | rib_process_update_fib(zvrf, rn, old_fib, new_fib); | |
1290 | else if (new_fib) | |
1291 | rib_process_add_fib(zvrf, rn, new_fib); | |
1292 | else if (old_fib) | |
1293 | rib_process_del_fib(zvrf, rn, old_fib); | |
1294 | ||
d62a17ae | 1295 | /* Remove all RE entries queued for removal */ |
a2addae8 | 1296 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 1297 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { |
1298 | if (IS_ZEBRA_DEBUG_RIB) { | |
1299 | rnode_debug(rn, vrf_id, "rn %p, removing re %p", | |
1300 | (void *)rn, (void *)re); | |
1301 | } | |
1302 | rib_unlink(rn, re); | |
1303 | } | |
1304 | } | |
4d38fdb4 | 1305 | |
d62a17ae | 1306 | /* |
1307 | * Check if the dest can be deleted now. | |
1308 | */ | |
1309 | rib_gc_dest(rn); | |
e96f9203 DO |
1310 | } |
1311 | ||
a1494c25 DS |
1312 | static void zebra_rib_evaluate_mpls(struct route_node *rn) |
1313 | { | |
1314 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
1315 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1316 | ||
1317 | if (!dest) | |
1318 | return; | |
1319 | ||
1320 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_LSPS)) { | |
1321 | if (IS_ZEBRA_DEBUG_MPLS) | |
1322 | zlog_debug( | |
bd47f3a3 JU |
1323 | "%s(%u): Scheduling all LSPs upon RIB completion", |
1324 | zvrf_name(zvrf), zvrf_id(zvrf)); | |
a1494c25 DS |
1325 | zebra_mpls_lsp_schedule(zvrf); |
1326 | mpls_unmark_lsps_for_processing(rn); | |
1327 | } | |
1328 | } | |
1329 | ||
e5ac2adf MS |
1330 | /* |
1331 | * Utility to match route with dplane context data | |
1332 | */ | |
1333 | static bool rib_route_match_ctx(const struct route_entry *re, | |
25779064 MS |
1334 | const struct zebra_dplane_ctx *ctx, |
1335 | bool is_update) | |
e5ac2adf MS |
1336 | { |
1337 | bool result = false; | |
1338 | ||
1339 | if (is_update) { | |
1340 | /* | |
1341 | * In 'update' case, we test info about the 'previous' or | |
1342 | * 'old' route | |
1343 | */ | |
1344 | if ((re->type == dplane_ctx_get_old_type(ctx)) && | |
1345 | (re->instance == dplane_ctx_get_old_instance(ctx))) { | |
1346 | result = true; | |
1347 | ||
9db35a5e MS |
1348 | /* We use an extra test for statics, and another for |
1349 | * kernel routes. | |
e5ac2adf MS |
1350 | */ |
1351 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1352 | (re->distance != dplane_ctx_get_old_distance(ctx) || | |
1353 | re->tag != dplane_ctx_get_old_tag(ctx))) { | |
1354 | result = false; | |
9db35a5e MS |
1355 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1356 | re->metric != | |
1357 | dplane_ctx_get_old_metric(ctx)) { | |
1358 | result = false; | |
e5ac2adf MS |
1359 | } |
1360 | } | |
1361 | ||
1362 | } else { | |
1363 | /* | |
1364 | * Ordinary, single-route case using primary context info | |
1365 | */ | |
1366 | if ((dplane_ctx_get_op(ctx) != DPLANE_OP_ROUTE_DELETE) && | |
1367 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
1368 | /* Skip route that's been deleted */ | |
1369 | goto done; | |
1370 | } | |
1371 | ||
1372 | if ((re->type == dplane_ctx_get_type(ctx)) && | |
1373 | (re->instance == dplane_ctx_get_instance(ctx))) { | |
1374 | result = true; | |
1375 | ||
9db35a5e MS |
1376 | /* We use an extra test for statics, and another for |
1377 | * kernel routes. | |
e5ac2adf MS |
1378 | */ |
1379 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1380 | (re->distance != dplane_ctx_get_distance(ctx) || | |
1381 | re->tag != dplane_ctx_get_tag(ctx))) { | |
1382 | result = false; | |
9db35a5e MS |
1383 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1384 | re->metric != dplane_ctx_get_metric(ctx)) { | |
1385 | result = false; | |
1386 | } else if (re->type == ZEBRA_ROUTE_CONNECT) { | |
1387 | result = nexthop_group_equal_no_recurse( | |
1388 | &re->nhe->nhg, dplane_ctx_get_ng(ctx)); | |
e5ac2adf MS |
1389 | } |
1390 | } | |
1391 | } | |
1392 | ||
1393 | done: | |
1394 | ||
1395 | return (result); | |
1396 | } | |
1397 | ||
3cdba47a DS |
1398 | static void zebra_rib_fixup_system(struct route_node *rn) |
1399 | { | |
1400 | struct route_entry *re; | |
1401 | ||
1402 | RNODE_FOREACH_RE(rn, re) { | |
1403 | struct nexthop *nhop; | |
1404 | ||
1405 | if (!RIB_SYSTEM_ROUTE(re)) | |
1406 | continue; | |
1407 | ||
1408 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1409 | continue; | |
1410 | ||
1411 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
6d0ee6a0 | 1412 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
3cdba47a | 1413 | |
c415d895 | 1414 | for (ALL_NEXTHOPS(re->nhe->nhg, nhop)) { |
3cdba47a DS |
1415 | if (CHECK_FLAG(nhop->flags, NEXTHOP_FLAG_RECURSIVE)) |
1416 | continue; | |
1417 | ||
1418 | SET_FLAG(nhop->flags, NEXTHOP_FLAG_FIB); | |
1419 | } | |
1420 | } | |
1421 | } | |
1422 | ||
9db35a5e MS |
1423 | /* Route comparison logic, with various special cases. */ |
1424 | static bool rib_compare_routes(const struct route_entry *re1, | |
1425 | const struct route_entry *re2) | |
1426 | { | |
9db35a5e MS |
1427 | if (re1->type != re2->type) |
1428 | return false; | |
1429 | ||
1430 | if (re1->instance != re2->instance) | |
1431 | return false; | |
1432 | ||
1433 | if (re1->type == ZEBRA_ROUTE_KERNEL && re1->metric != re2->metric) | |
1434 | return false; | |
1435 | ||
1436 | if (CHECK_FLAG(re1->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && | |
1437 | re1->distance != re2->distance) | |
1438 | return false; | |
1439 | ||
87009d7d MS |
1440 | /* We support multiple connected routes: this supports multiple |
1441 | * v6 link-locals, and we also support multiple addresses in the same | |
1442 | * subnet on a single interface. | |
1443 | */ | |
9db35a5e MS |
1444 | if (re1->type != ZEBRA_ROUTE_CONNECT) |
1445 | return true; | |
1446 | ||
87009d7d | 1447 | return false; |
9db35a5e MS |
1448 | } |
1449 | ||
9959f1da MS |
1450 | /* |
1451 | * Compare nexthop lists from a route and a dplane context; test whether | |
1452 | * the list installed in the FIB matches the route's list. | |
1453 | * Set 'changed_p' to 'true' if there were changes to the route's | |
1454 | * installed nexthops. | |
1455 | * | |
1456 | * Return 'false' if any ACTIVE route nexthops are not mentioned in the FIB | |
1457 | * list. | |
1458 | */ | |
1459 | static bool rib_update_nhg_from_ctx(struct nexthop_group *re_nhg, | |
1460 | const struct nexthop_group *ctx_nhg, | |
1461 | bool *changed_p) | |
1462 | { | |
1463 | bool matched_p = true; | |
1464 | struct nexthop *nexthop, *ctx_nexthop; | |
1465 | ||
1466 | /* Get the first `installed` one to check against. | |
1467 | * If the dataplane doesn't set these to be what was actually installed, | |
1468 | * it will just be whatever was in re->nhe->nhg? | |
1469 | */ | |
1470 | ctx_nexthop = ctx_nhg->nexthop; | |
1471 | ||
1472 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
1473 | || !CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1474 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1475 | ||
1476 | for (ALL_NEXTHOPS_PTR(re_nhg, nexthop)) { | |
1477 | ||
1478 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
1479 | continue; | |
1480 | ||
1481 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1482 | continue; | |
1483 | ||
1484 | /* Check for a FIB nexthop corresponding to the RIB nexthop */ | |
7483dcbe | 1485 | if (!nexthop_same(ctx_nexthop, nexthop)) { |
9959f1da MS |
1486 | /* If the FIB doesn't know about the nexthop, |
1487 | * it's not installed | |
1488 | */ | |
1489 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || | |
1490 | IS_ZEBRA_DEBUG_NHG_DETAIL) { | |
1491 | zlog_debug("%s: no ctx match for rib nh %pNHv %s", | |
1492 | __func__, nexthop, | |
1493 | (CHECK_FLAG(nexthop->flags, | |
1494 | NEXTHOP_FLAG_FIB) ? | |
1495 | "(FIB)":"")); | |
1496 | } | |
1497 | matched_p = false; | |
1498 | ||
1499 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1500 | *changed_p = true; | |
1501 | ||
1502 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1503 | ||
1504 | /* Keep checking nexthops */ | |
1505 | continue; | |
1506 | } | |
1507 | ||
1508 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1509 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1510 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1511 | zlog_debug("%s: rib nh %pNHv -> installed", | |
1512 | __func__, nexthop); | |
1513 | ||
1514 | *changed_p = true; | |
1515 | } | |
1516 | ||
1517 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1518 | } else { | |
1519 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1520 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1521 | zlog_debug("%s: rib nh %pNHv -> uninstalled", | |
1522 | __func__, nexthop); | |
1523 | ||
1524 | *changed_p = true; | |
1525 | } | |
1526 | ||
1527 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1528 | } | |
1529 | ||
1530 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1531 | } | |
1532 | ||
1533 | return matched_p; | |
1534 | } | |
1535 | ||
e5ac2adf | 1536 | /* |
78bf56b0 MS |
1537 | * Update a route from a dplane context. This consolidates common code |
1538 | * that can be used in processing of results from FIB updates, and in | |
1539 | * async notification processing. | |
efe6c026 | 1540 | * The return is 'true' if the installed nexthops changed; 'false' otherwise. |
e5ac2adf | 1541 | */ |
efe6c026 MS |
1542 | static bool rib_update_re_from_ctx(struct route_entry *re, |
1543 | struct route_node *rn, | |
1544 | struct zebra_dplane_ctx *ctx) | |
78bf56b0 | 1545 | { |
9959f1da | 1546 | struct nexthop *nexthop; |
941e261c MS |
1547 | bool matched; |
1548 | const struct nexthop_group *ctxnhg; | |
9959f1da | 1549 | struct nexthop_group *re_nhg; |
efe6c026 MS |
1550 | bool is_selected = false; /* Is 're' currently the selected re? */ |
1551 | bool changed_p = false; /* Change to nexthops? */ | |
1552 | rib_dest_t *dest; | |
bd47f3a3 JU |
1553 | struct vrf *vrf; |
1554 | ||
1555 | vrf = vrf_lookup_by_id(re->vrf_id); | |
78bf56b0 | 1556 | |
efe6c026 MS |
1557 | dest = rib_dest_from_rnode(rn); |
1558 | if (dest) | |
1559 | is_selected = (re == dest->selected_fib); | |
1560 | ||
1561 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2919eea8 DS |
1562 | zlog_debug("update_from_ctx: %s(%u:%u):%pRN: %sSELECTED, re %p", |
1563 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
9db35a5e | 1564 | (is_selected ? "" : "NOT "), re); |
efe6c026 MS |
1565 | |
1566 | /* Update zebra's nexthop FIB flag for each nexthop that was installed. | |
941e261c | 1567 | * If the installed set differs from the set requested by the rib/owner, |
efe6c026 MS |
1568 | * we use the fib-specific nexthop-group to record the actual FIB |
1569 | * status. | |
78bf56b0 | 1570 | */ |
a126f120 MS |
1571 | matched = false; |
1572 | ctxnhg = dplane_ctx_get_ng(ctx); | |
941e261c | 1573 | |
9959f1da | 1574 | /* Check route's fib group and incoming notif group for equivalence. |
986a6617 SW |
1575 | * |
1576 | * Let's assume the nexthops are ordered here to save time. | |
941e261c | 1577 | */ |
9959f1da MS |
1578 | /* TODO -- this isn't testing or comparing the FIB flags; we should |
1579 | * do a more explicit loop, checking the incoming notification's flags. | |
1580 | */ | |
a126f120 MS |
1581 | if (re->fib_ng.nexthop && ctxnhg->nexthop && |
1582 | nexthop_group_equal(&re->fib_ng, ctxnhg)) | |
986a6617 | 1583 | matched = true; |
941e261c MS |
1584 | |
1585 | /* If the new FIB set matches the existing FIB set, we're done. */ | |
1586 | if (matched) { | |
1587 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1588 | zlog_debug( |
2919eea8 DS |
1589 | "%s(%u:%u):%pRN update_from_ctx(): existing fib nhg, no change", |
1590 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
9959f1da | 1591 | goto check_backups; |
941e261c | 1592 | |
7483dcbe | 1593 | } else if (CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG)) { |
941e261c MS |
1594 | /* |
1595 | * Free stale fib list and move on to check the rib nhg. | |
1596 | */ | |
1597 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1598 | zlog_debug( |
2919eea8 DS |
1599 | "%s(%u:%u):%pRN update_from_ctx(): replacing fib nhg", |
1600 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1601 | nexthops_free(re->fib_ng.nexthop); |
1602 | re->fib_ng.nexthop = NULL; | |
efe6c026 | 1603 | |
7483dcbe MS |
1604 | UNSET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); |
1605 | ||
efe6c026 MS |
1606 | /* Note that the installed nexthops have changed */ |
1607 | changed_p = true; | |
941e261c MS |
1608 | } else { |
1609 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1610 | zlog_debug( |
1611 | "%s(%u:%u):%pRN update_from_ctx(): no fib nhg", | |
1612 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1613 | } |
1614 | ||
1615 | /* | |
1616 | * Compare with the rib nexthop group. The comparison here is different: | |
1617 | * the RIB group may be a superset of the list installed in the FIB. We | |
1618 | * walk the RIB group, looking for the 'installable' candidate | |
1619 | * nexthops, and then check those against the set | |
1620 | * that is actually installed. | |
986a6617 SW |
1621 | * |
1622 | * Assume nexthops are ordered here as well. | |
941e261c | 1623 | */ |
986a6617 | 1624 | |
9959f1da | 1625 | /* If nothing is installed, we can skip some of the checking/comparison |
1f6a5aca MS |
1626 | * of nexthops. |
1627 | */ | |
9959f1da | 1628 | if (ctxnhg->nexthop == NULL) { |
1f6a5aca MS |
1629 | changed_p = true; |
1630 | goto no_nexthops; | |
1631 | } | |
1632 | ||
9959f1da | 1633 | matched = rib_update_nhg_from_ctx(&(re->nhe->nhg), ctxnhg, &changed_p); |
78bf56b0 | 1634 | |
941e261c MS |
1635 | /* If all nexthops were processed, we're done */ |
1636 | if (matched) { | |
1637 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1638 | zlog_debug( |
2919eea8 DS |
1639 | "%s(%u:%u):%pRN update_from_ctx(): rib nhg matched, changed '%s'", |
1640 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
1641 | (changed_p ? "true" : "false")); | |
9959f1da | 1642 | goto check_backups; |
941e261c | 1643 | } |
78bf56b0 | 1644 | |
1f6a5aca MS |
1645 | no_nexthops: |
1646 | ||
941e261c MS |
1647 | /* FIB nexthop set differs from the RIB set: |
1648 | * create a fib-specific nexthop-group | |
1649 | */ | |
1650 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1651 | zlog_debug( |
2919eea8 DS |
1652 | "%s(%u:%u):%pRN update_from_ctx(): changed %s, adding new fib nhg%s", |
1653 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
7483dcbe MS |
1654 | (changed_p ? "true" : "false"), |
1655 | ctxnhg->nexthop != NULL ? "" : " (empty)"); | |
941e261c | 1656 | |
7483dcbe MS |
1657 | /* Set the flag about the dedicated fib list */ |
1658 | SET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); | |
188a00e0 MS |
1659 | if (ctxnhg->nexthop) |
1660 | copy_nexthops(&(re->fib_ng.nexthop), ctxnhg->nexthop, NULL); | |
941e261c | 1661 | |
9959f1da MS |
1662 | check_backups: |
1663 | ||
1664 | /* | |
1665 | * Check the status of the route's backup nexthops, if any. | |
1666 | * The logic for backups is somewhat different: if any backup is | |
1667 | * installed, a new fib nhg will be attached to the route. | |
1668 | */ | |
1669 | re_nhg = zebra_nhg_get_backup_nhg(re->nhe); | |
1670 | if (re_nhg == NULL) | |
1671 | goto done; /* No backup nexthops */ | |
1672 | ||
1673 | /* First check the route's 'fib' list of backups, if it's present | |
1674 | * from some previous event. | |
1675 | */ | |
1676 | re_nhg = &re->fib_backup_ng; | |
1677 | ctxnhg = dplane_ctx_get_backup_ng(ctx); | |
1678 | ||
1679 | matched = false; | |
1680 | if (re_nhg->nexthop && ctxnhg && nexthop_group_equal(re_nhg, ctxnhg)) | |
1681 | matched = true; | |
1682 | ||
1683 | /* If the new FIB set matches an existing FIB set, we're done. */ | |
1684 | if (matched) { | |
1685 | if (IS_ZEBRA_DEBUG_RIB) | |
1686 | zlog_debug( | |
2919eea8 DS |
1687 | "%s(%u):%pRN update_from_ctx(): existing fib backup nhg, no change", |
1688 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1689 | goto done; |
1690 | ||
1691 | } else if (re->fib_backup_ng.nexthop) { | |
1692 | /* | |
1693 | * Free stale fib backup list and move on to check | |
1694 | * the route's backups. | |
1695 | */ | |
1696 | if (IS_ZEBRA_DEBUG_RIB) | |
1697 | zlog_debug( | |
2919eea8 DS |
1698 | "%s(%u):%pRN update_from_ctx(): replacing fib backup nhg", |
1699 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1700 | nexthops_free(re->fib_backup_ng.nexthop); |
1701 | re->fib_backup_ng.nexthop = NULL; | |
1702 | ||
1703 | /* Note that the installed nexthops have changed */ | |
1704 | changed_p = true; | |
1705 | } else { | |
1706 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1707 | zlog_debug( |
1708 | "%s(%u):%pRN update_from_ctx(): no fib backup nhg", | |
1709 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1710 | } |
1711 | ||
1712 | /* | |
7483dcbe | 1713 | * If a FIB backup nexthop set exists, attach a copy |
9959f1da MS |
1714 | * to the route if any backup is installed |
1715 | */ | |
1716 | if (ctxnhg && ctxnhg->nexthop) { | |
1717 | ||
1718 | for (ALL_NEXTHOPS_PTR(ctxnhg, nexthop)) { | |
1719 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1720 | break; | |
1721 | } | |
1722 | ||
1723 | /* If no installed backups, we're done */ | |
1724 | if (nexthop == NULL) | |
1725 | goto done; | |
1726 | ||
1727 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1728 | zlog_debug( |
1729 | "%s(%u):%pRN update_from_ctx(): changed %s, adding new backup fib nhg", | |
1730 | VRF_LOGNAME(vrf), re->vrf_id, rn, | |
1731 | (changed_p ? "true" : "false")); | |
9959f1da MS |
1732 | |
1733 | copy_nexthops(&(re->fib_backup_ng.nexthop), ctxnhg->nexthop, | |
1734 | NULL); | |
1735 | } | |
1736 | ||
941e261c | 1737 | done: |
9959f1da | 1738 | |
efe6c026 | 1739 | return changed_p; |
78bf56b0 MS |
1740 | } |
1741 | ||
e5ac2adf | 1742 | /* |
fad4d69c MS |
1743 | * Helper to locate a zebra route-node from a dplane context. This is used |
1744 | * when processing dplane results, e.g. Note well: the route-node is returned | |
1745 | * with a ref held - route_unlock_node() must be called eventually. | |
e5ac2adf | 1746 | */ |
fad4d69c MS |
1747 | static struct route_node * |
1748 | rib_find_rn_from_ctx(const struct zebra_dplane_ctx *ctx) | |
e5ac2adf MS |
1749 | { |
1750 | struct route_table *table = NULL; | |
1751 | struct route_node *rn = NULL; | |
e5ac2adf MS |
1752 | const struct prefix *dest_pfx, *src_pfx; |
1753 | ||
1754 | /* Locate rn and re(s) from ctx */ | |
1755 | ||
c7c0b007 SW |
1756 | table = zebra_vrf_lookup_table_with_table_id( |
1757 | dplane_ctx_get_afi(ctx), dplane_ctx_get_safi(ctx), | |
1758 | dplane_ctx_get_vrf(ctx), dplane_ctx_get_table(ctx)); | |
e5ac2adf MS |
1759 | if (table == NULL) { |
1760 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 JU |
1761 | zlog_debug( |
1762 | "Failed to find route for ctx: no table for afi %d, safi %d, vrf %s(%u)", | |
1763 | dplane_ctx_get_afi(ctx), | |
1764 | dplane_ctx_get_safi(ctx), | |
1765 | vrf_id_to_name(dplane_ctx_get_vrf(ctx)), | |
1766 | dplane_ctx_get_vrf(ctx)); | |
e5ac2adf MS |
1767 | } |
1768 | goto done; | |
1769 | } | |
1770 | ||
fad4d69c MS |
1771 | dest_pfx = dplane_ctx_get_dest(ctx); |
1772 | src_pfx = dplane_ctx_get_src(ctx); | |
1773 | ||
1774 | rn = srcdest_rnode_get(table, dest_pfx, | |
1775 | src_pfx ? (struct prefix_ipv6 *)src_pfx : NULL); | |
1776 | ||
1777 | done: | |
1778 | return rn; | |
1779 | } | |
1780 | ||
1781 | ||
97f5b441 | 1782 | |
fad4d69c MS |
1783 | /* |
1784 | * Route-update results processing after async dataplane update. | |
1785 | */ | |
1786 | static void rib_process_result(struct zebra_dplane_ctx *ctx) | |
1787 | { | |
1788 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1789 | struct vrf *vrf; |
fad4d69c MS |
1790 | struct route_node *rn = NULL; |
1791 | struct route_entry *re = NULL, *old_re = NULL, *rib; | |
1792 | bool is_update = false; | |
fad4d69c MS |
1793 | enum dplane_op_e op; |
1794 | enum zebra_dplane_result status; | |
1795 | const struct prefix *dest_pfx, *src_pfx; | |
1796 | uint32_t seq; | |
9db35a5e | 1797 | rib_dest_t *dest; |
efe6c026 | 1798 | bool fib_changed = false; |
77b38a4a | 1799 | struct rib_table_info *info; |
97f5b441 | 1800 | |
fad4d69c | 1801 | zvrf = vrf_info_lookup(dplane_ctx_get_vrf(ctx)); |
bd47f3a3 | 1802 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
e5ac2adf MS |
1803 | dest_pfx = dplane_ctx_get_dest(ctx); |
1804 | ||
fad4d69c MS |
1805 | /* Locate rn and re(s) from ctx */ |
1806 | rn = rib_find_rn_from_ctx(ctx); | |
e5ac2adf MS |
1807 | if (rn == NULL) { |
1808 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 | 1809 | zlog_debug( |
2919eea8 | 1810 | "Failed to process dplane results: no route for %s(%u):%pFX", |
bd47f3a3 | 1811 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 1812 | dest_pfx); |
e5ac2adf MS |
1813 | } |
1814 | goto done; | |
1815 | } | |
1816 | ||
9db35a5e | 1817 | dest = rib_dest_from_rnode(rn); |
e5ac2adf | 1818 | srcdest_rnode_prefixes(rn, &dest_pfx, &src_pfx); |
77b38a4a | 1819 | info = srcdest_rnode_table_info(rn); |
e5ac2adf MS |
1820 | |
1821 | op = dplane_ctx_get_op(ctx); | |
1822 | status = dplane_ctx_get_status(ctx); | |
1823 | ||
c831033f | 1824 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1825 | zlog_debug( |
2919eea8 | 1826 | "%s(%u:%u):%pFX Processing dplane result ctx %p, op %s result %s", |
c2c02b76 | 1827 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 1828 | dplane_ctx_get_table(ctx), dest_pfx, ctx, |
c2c02b76 | 1829 | dplane_op2str(op), dplane_res2str(status)); |
e5ac2adf | 1830 | |
e5ac2adf MS |
1831 | /* |
1832 | * Update is a bit of a special case, where we may have both old and new | |
1833 | * routes to post-process. | |
1834 | */ | |
1835 | is_update = dplane_ctx_is_update(ctx); | |
1836 | ||
1837 | /* | |
1838 | * Take a pass through the routes, look for matches with the context | |
1839 | * info. | |
1840 | */ | |
1841 | RNODE_FOREACH_RE(rn, rib) { | |
1842 | ||
1843 | if (re == NULL) { | |
5709131c | 1844 | if (rib_route_match_ctx(rib, ctx, false)) |
e5ac2adf | 1845 | re = rib; |
e5ac2adf MS |
1846 | } |
1847 | ||
1848 | /* Check for old route match */ | |
1849 | if (is_update && (old_re == NULL)) { | |
5709131c | 1850 | if (rib_route_match_ctx(rib, ctx, true /*is_update*/)) |
e5ac2adf | 1851 | old_re = rib; |
e5ac2adf MS |
1852 | } |
1853 | ||
1854 | /* Have we found the routes we need to work on? */ | |
5709131c | 1855 | if (re && ((!is_update || old_re))) |
e5ac2adf | 1856 | break; |
e5ac2adf MS |
1857 | } |
1858 | ||
699dae23 DS |
1859 | seq = dplane_ctx_get_seq(ctx); |
1860 | ||
e5ac2adf MS |
1861 | /* |
1862 | * Check sequence number(s) to detect stale results before continuing | |
1863 | */ | |
60f98b23 | 1864 | if (re) { |
699dae23 | 1865 | if (re->dplane_sequence != seq) { |
60f98b23 | 1866 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1867 | zlog_debug( |
2919eea8 | 1868 | "%s(%u):%pFX Stale dplane result for re %p", |
bd47f3a3 | 1869 | VRF_LOGNAME(vrf), |
2919eea8 | 1870 | dplane_ctx_get_vrf(ctx), dest_pfx, re); |
e4876266 DS |
1871 | } else { |
1872 | if (!zrouter.asic_offloaded || | |
1873 | (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED) || | |
1874 | CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED))) | |
1875 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); | |
1876 | } | |
e5ac2adf MS |
1877 | } |
1878 | ||
60f98b23 DS |
1879 | if (old_re) { |
1880 | if (old_re->dplane_sequence != dplane_ctx_get_old_seq(ctx)) { | |
1881 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 1882 | zlog_debug( |
2919eea8 | 1883 | "%s(%u:%u):%pFX Stale dplane result for old_re %p", |
bd47f3a3 | 1884 | VRF_LOGNAME(vrf), |
c2c02b76 | 1885 | dplane_ctx_get_vrf(ctx), old_re->table, |
2919eea8 | 1886 | dest_pfx, old_re); |
60f98b23 | 1887 | } else |
9ef0c6ba | 1888 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_QUEUED); |
e5ac2adf MS |
1889 | } |
1890 | ||
12e7fe3a | 1891 | switch (op) { |
12e7fe3a DS |
1892 | case DPLANE_OP_ROUTE_INSTALL: |
1893 | case DPLANE_OP_ROUTE_UPDATE: | |
1894 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
677c1dd5 DS |
1895 | if (re) { |
1896 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
1897 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
1898 | } | |
b9f0e5ee DS |
1899 | /* |
1900 | * On an update operation from the same route type | |
1901 | * context retrieval currently has no way to know | |
1902 | * which was the old and which was the new. | |
1903 | * So don't unset our flags that we just set. | |
1904 | * We know redistribution is ok because the | |
1905 | * old_re in this case is used for nothing | |
1906 | * more than knowing whom to contact if necessary. | |
1907 | */ | |
1908 | if (old_re && old_re != re) { | |
677c1dd5 DS |
1909 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
1910 | UNSET_FLAG(old_re->status, | |
1911 | ROUTE_ENTRY_INSTALLED); | |
1912 | } | |
f183e380 | 1913 | |
78bf56b0 | 1914 | /* Update zebra route based on the results in |
941e261c | 1915 | * the context struct. |
78bf56b0 | 1916 | */ |
941e261c | 1917 | if (re) { |
efe6c026 MS |
1918 | fib_changed = |
1919 | rib_update_re_from_ctx(re, rn, ctx); | |
1920 | ||
1921 | if (!fib_changed) { | |
1922 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 1923 | zlog_debug( |
2919eea8 | 1924 | "%s(%u:%u):%pFX no fib change for re", |
bd47f3a3 JU |
1925 | VRF_LOGNAME(vrf), |
1926 | dplane_ctx_get_vrf(ctx), | |
c2c02b76 DS |
1927 | dplane_ctx_get_table( |
1928 | ctx), | |
2919eea8 | 1929 | dest_pfx); |
12e7fe3a DS |
1930 | } |
1931 | ||
9db35a5e MS |
1932 | /* Redistribute if this is the selected re */ |
1933 | if (dest && re == dest->selected_fib) | |
1934 | redistribute_update(dest_pfx, src_pfx, | |
1935 | re, old_re); | |
f183e380 MS |
1936 | } |
1937 | ||
3cdba47a DS |
1938 | /* |
1939 | * System routes are weird in that they | |
1940 | * allow multiple to be installed that match | |
1941 | * to the same prefix, so after we get the | |
1942 | * result we need to clean them up so that | |
1943 | * we can actually use them. | |
1944 | */ | |
1945 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
1946 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
1947 | zebra_rib_fixup_system(rn); | |
1948 | ||
f4c6e2a8 | 1949 | if (zvrf) |
12e7fe3a | 1950 | zvrf->installs++; |
f183e380 | 1951 | |
12e7fe3a | 1952 | /* Notify route owner */ |
e4876266 DS |
1953 | if (zebra_router_notify_on_ack()) |
1954 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_INSTALLED); | |
1955 | else { | |
1956 | if (re) { | |
1957 | if (CHECK_FLAG(re->flags, | |
1958 | ZEBRA_FLAG_OFFLOADED)) | |
1959 | zsend_route_notify_owner_ctx( | |
1960 | ctx, | |
1961 | ZAPI_ROUTE_INSTALLED); | |
1962 | if (CHECK_FLAG( | |
1963 | re->flags, | |
1964 | ZEBRA_FLAG_OFFLOAD_FAILED)) | |
1965 | zsend_route_notify_owner_ctx( | |
1966 | ctx, | |
1967 | ZAPI_ROUTE_FAIL_INSTALL); | |
1968 | } | |
1969 | } | |
12e7fe3a | 1970 | } else { |
7a230a9d | 1971 | if (re) { |
677c1dd5 | 1972 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); |
7a230a9d DS |
1973 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
1974 | } if (old_re) | |
677c1dd5 DS |
1975 | SET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
1976 | if (re) | |
1977 | zsend_route_notify_owner(re, dest_pfx, | |
77b38a4a S |
1978 | ZAPI_ROUTE_FAIL_INSTALL, |
1979 | info->afi, info->safi); | |
97f5b441 | 1980 | |
2dbe669b | 1981 | zlog_warn("%s(%u:%u):%pFX: Route install failed", |
bd47f3a3 | 1982 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2dbe669b | 1983 | dplane_ctx_get_table(ctx), dest_pfx); |
12e7fe3a DS |
1984 | } |
1985 | break; | |
1986 | case DPLANE_OP_ROUTE_DELETE: | |
677c1dd5 DS |
1987 | if (re) |
1988 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
1989 | /* |
1990 | * In the delete case, the zebra core datastructs were | |
1991 | * updated (or removed) at the time the delete was issued, | |
1992 | * so we're just notifying the route owner. | |
e5ac2adf | 1993 | */ |
12e7fe3a | 1994 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
677c1dd5 DS |
1995 | if (re) { |
1996 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
1997 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
1998 | } | |
12e7fe3a | 1999 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_REMOVED); |
e5ac2adf | 2000 | |
12e7fe3a DS |
2001 | if (zvrf) |
2002 | zvrf->removals++; | |
2003 | } else { | |
677c1dd5 DS |
2004 | if (re) |
2005 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
2006 | zsend_route_notify_owner_ctx(ctx, |
2007 | ZAPI_ROUTE_REMOVE_FAIL); | |
e5ac2adf | 2008 | |
2dbe669b | 2009 | zlog_warn("%s(%u:%u):%pFX: Route Deletion failure", |
bd47f3a3 | 2010 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2dbe669b | 2011 | dplane_ctx_get_table(ctx), dest_pfx); |
12e7fe3a | 2012 | } |
3cdba47a DS |
2013 | |
2014 | /* | |
2015 | * System routes are weird in that they | |
2016 | * allow multiple to be installed that match | |
2017 | * to the same prefix, so after we get the | |
2018 | * result we need to clean them up so that | |
2019 | * we can actually use them. | |
2020 | */ | |
2021 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
2022 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
2023 | zebra_rib_fixup_system(rn); | |
12e7fe3a | 2024 | break; |
d37f4d6c MS |
2025 | default: |
2026 | break; | |
e5ac2adf | 2027 | } |
699dae23 DS |
2028 | |
2029 | zebra_rib_evaluate_rn_nexthops(rn, seq); | |
a1494c25 | 2030 | zebra_rib_evaluate_mpls(rn); |
e5ac2adf MS |
2031 | done: |
2032 | ||
5f27bcba DS |
2033 | if (rn) |
2034 | route_unlock_node(rn); | |
2035 | ||
e5ac2adf MS |
2036 | /* Return context to dataplane module */ |
2037 | dplane_ctx_fini(&ctx); | |
2038 | } | |
2039 | ||
9959f1da MS |
2040 | /* |
2041 | * Count installed/FIB nexthops | |
2042 | */ | |
2043 | static int rib_count_installed_nh(struct route_entry *re) | |
2044 | { | |
2045 | int count = 0; | |
2046 | struct nexthop *nexthop; | |
2047 | struct nexthop_group *nhg; | |
2048 | ||
2049 | nhg = rib_get_fib_nhg(re); | |
2050 | ||
2051 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2052 | /* The meaningful flag depends on where the installed | |
2053 | * nexthops reside. | |
2054 | */ | |
43a9f66c | 2055 | if (nhg == &(re->fib_ng)) { |
9959f1da MS |
2056 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) |
2057 | count++; | |
2058 | } else { | |
2059 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
2060 | count++; | |
2061 | } | |
2062 | } | |
2063 | ||
43a9f66c MS |
2064 | nhg = rib_get_fib_backup_nhg(re); |
2065 | if (nhg) { | |
2066 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2067 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2068 | count++; | |
2069 | } | |
9959f1da MS |
2070 | } |
2071 | ||
2072 | return count; | |
2073 | } | |
2074 | ||
54818e3b MS |
2075 | /* |
2076 | * Handle notification from async dataplane: the dataplane has detected | |
2077 | * some change to a route, and notifies zebra so that the control plane | |
2078 | * can reflect that change. | |
2079 | */ | |
2080 | static void rib_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2081 | { | |
2082 | struct route_node *rn = NULL; | |
efe6c026 | 2083 | struct route_entry *re = NULL; |
bd47f3a3 | 2084 | struct vrf *vrf; |
efe6c026 | 2085 | struct nexthop *nexthop; |
54818e3b | 2086 | const struct prefix *dest_pfx, *src_pfx; |
941e261c | 2087 | rib_dest_t *dest; |
efe6c026 | 2088 | bool fib_changed = false; |
941e261c | 2089 | bool debug_p = IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_RIB; |
efe6c026 | 2090 | int start_count, end_count; |
54818e3b | 2091 | dest_pfx = dplane_ctx_get_dest(ctx); |
bd47f3a3 | 2092 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
54818e3b | 2093 | |
54818e3b MS |
2094 | /* Locate rn and re(s) from ctx */ |
2095 | rn = rib_find_rn_from_ctx(ctx); | |
2096 | if (rn == NULL) { | |
941e261c | 2097 | if (debug_p) { |
bd47f3a3 | 2098 | zlog_debug( |
2919eea8 | 2099 | "Failed to process dplane notification: no routes for %s(%u:%u):%pFX", |
bd47f3a3 | 2100 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2101 | dplane_ctx_get_table(ctx), dest_pfx); |
54818e3b MS |
2102 | } |
2103 | goto done; | |
2104 | } | |
2105 | ||
941e261c | 2106 | dest = rib_dest_from_rnode(rn); |
54818e3b MS |
2107 | srcdest_rnode_prefixes(rn, &dest_pfx, &src_pfx); |
2108 | ||
efe6c026 | 2109 | if (debug_p) |
2919eea8 | 2110 | zlog_debug("%s(%u:%u):%pFX Processing dplane notif ctx %p", |
c2c02b76 | 2111 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2112 | dplane_ctx_get_table(ctx), dest_pfx, ctx); |
54818e3b MS |
2113 | |
2114 | /* | |
2115 | * Take a pass through the routes, look for matches with the context | |
2116 | * info. | |
2117 | */ | |
efe6c026 MS |
2118 | RNODE_FOREACH_RE(rn, re) { |
2119 | if (rib_route_match_ctx(re, ctx, false /*!update*/)) | |
54818e3b MS |
2120 | break; |
2121 | } | |
2122 | ||
2123 | /* No match? Nothing we can do */ | |
2124 | if (re == NULL) { | |
941e261c | 2125 | if (debug_p) |
bd47f3a3 | 2126 | zlog_debug( |
2919eea8 | 2127 | "%s(%u:%u):%pFX Unable to process dplane notification: no entry for type %s", |
bd47f3a3 | 2128 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2129 | dplane_ctx_get_table(ctx), dest_pfx, |
bd47f3a3 | 2130 | zebra_route_string(dplane_ctx_get_type(ctx))); |
54818e3b MS |
2131 | |
2132 | goto done; | |
2133 | } | |
2134 | ||
272e8903 | 2135 | /* Ensure we clear the QUEUED flag */ |
e4876266 DS |
2136 | if (!zrouter.asic_offloaded) |
2137 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); | |
272e8903 | 2138 | |
4c0b5436 MS |
2139 | /* Is this a notification that ... matters? We mostly care about |
2140 | * the route that is currently selected for installation; we may also | |
2141 | * get an un-install notification, and handle that too. | |
941e261c MS |
2142 | */ |
2143 | if (re != dest->selected_fib) { | |
4c0b5436 MS |
2144 | /* |
2145 | * If we need to, clean up after a delete that was part of | |
2146 | * an update operation. | |
941e261c | 2147 | */ |
4c0b5436 MS |
2148 | end_count = 0; |
2149 | for (ALL_NEXTHOPS_PTR(dplane_ctx_get_ng(ctx), nexthop)) { | |
2150 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2151 | end_count++; | |
2152 | } | |
2153 | ||
2154 | /* If no nexthops or none installed, ensure that this re | |
2155 | * gets its 'installed' flag cleared. | |
2156 | */ | |
2157 | if (end_count == 0) { | |
2158 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) | |
2159 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2160 | if (debug_p) | |
bd47f3a3 | 2161 | zlog_debug( |
2919eea8 | 2162 | "%s(%u:%u):%pFX dplane notif, uninstalled type %s route", |
bd47f3a3 | 2163 | VRF_LOGNAME(vrf), |
c2c02b76 | 2164 | dplane_ctx_get_vrf(ctx), |
2919eea8 | 2165 | dplane_ctx_get_table(ctx), dest_pfx, |
bd47f3a3 JU |
2166 | zebra_route_string( |
2167 | dplane_ctx_get_type(ctx))); | |
4c0b5436 MS |
2168 | } else { |
2169 | /* At least report on the event. */ | |
2170 | if (debug_p) | |
bd47f3a3 | 2171 | zlog_debug( |
2919eea8 | 2172 | "%s(%u:%u):%pFX dplane notif, but type %s not selected_fib", |
bd47f3a3 | 2173 | VRF_LOGNAME(vrf), |
c2c02b76 | 2174 | dplane_ctx_get_vrf(ctx), |
2919eea8 | 2175 | dplane_ctx_get_table(ctx), dest_pfx, |
bd47f3a3 JU |
2176 | zebra_route_string( |
2177 | dplane_ctx_get_type(ctx))); | |
4c0b5436 | 2178 | } |
941e261c MS |
2179 | goto done; |
2180 | } | |
2181 | ||
efe6c026 MS |
2182 | /* We'll want to determine whether the installation status of the |
2183 | * route has changed: we'll check the status before processing, | |
2184 | * and then again if there's been a change. | |
2185 | */ | |
2186 | start_count = 0; | |
1c30d64b | 2187 | |
9959f1da MS |
2188 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) |
2189 | start_count = rib_count_installed_nh(re); | |
efe6c026 | 2190 | |
54818e3b MS |
2191 | /* Update zebra's nexthop FIB flags based on the context struct's |
2192 | * nexthops. | |
2193 | */ | |
efe6c026 | 2194 | fib_changed = rib_update_re_from_ctx(re, rn, ctx); |
54818e3b | 2195 | |
efe6c026 MS |
2196 | if (!fib_changed) { |
2197 | if (debug_p) | |
bd47f3a3 | 2198 | zlog_debug( |
2919eea8 | 2199 | "%s(%u:%u):%pFX dplane notification: rib_update returns FALSE", |
bd47f3a3 | 2200 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2201 | dplane_ctx_get_table(ctx), dest_pfx); |
54818e3b MS |
2202 | } |
2203 | ||
188a00e0 MS |
2204 | /* |
2205 | * Perform follow-up work if the actual status of the prefix | |
efe6c026 | 2206 | * changed. |
941e261c | 2207 | */ |
9959f1da | 2208 | end_count = rib_count_installed_nh(re); |
941e261c | 2209 | |
188a00e0 MS |
2210 | /* Various fib transitions: changed nexthops; from installed to |
2211 | * not-installed; or not-installed to installed. | |
efe6c026 | 2212 | */ |
188a00e0 | 2213 | if (start_count > 0 && end_count > 0) { |
11260e70 | 2214 | if (debug_p) |
bd47f3a3 | 2215 | zlog_debug( |
2919eea8 | 2216 | "%s(%u:%u):%pFX applied nexthop changes from dplane notification", |
bd47f3a3 | 2217 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2218 | dplane_ctx_get_table(ctx), dest_pfx); |
188a00e0 MS |
2219 | |
2220 | /* Changed nexthops - update kernel/others */ | |
2221 | dplane_route_notif_update(rn, re, | |
2222 | DPLANE_OP_ROUTE_UPDATE, ctx); | |
2223 | ||
2224 | } else if (start_count == 0 && end_count > 0) { | |
efe6c026 | 2225 | if (debug_p) |
bd47f3a3 | 2226 | zlog_debug( |
2919eea8 | 2227 | "%s(%u:%u):%pFX installed transition from dplane notification", |
bd47f3a3 | 2228 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2229 | dplane_ctx_get_table(ctx), dest_pfx); |
efe6c026 MS |
2230 | |
2231 | /* We expect this to be the selected route, so we want | |
272e8903 | 2232 | * to tell others about this transition. |
efe6c026 MS |
2233 | */ |
2234 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2235 | ||
188a00e0 | 2236 | /* Changed nexthops - update kernel/others */ |
9959f1da | 2237 | dplane_route_notif_update(rn, re, DPLANE_OP_ROUTE_UPDATE, ctx); |
188a00e0 | 2238 | |
efe6c026 MS |
2239 | /* Redistribute, lsp, and nht update */ |
2240 | redistribute_update(dest_pfx, src_pfx, re, NULL); | |
2241 | ||
efe6c026 MS |
2242 | } else if (start_count > 0 && end_count == 0) { |
2243 | if (debug_p) | |
bd47f3a3 | 2244 | zlog_debug( |
2919eea8 | 2245 | "%s(%u:%u):%pFX un-installed transition from dplane notification", |
bd47f3a3 | 2246 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
2919eea8 | 2247 | dplane_ctx_get_table(ctx), dest_pfx); |
efe6c026 MS |
2248 | |
2249 | /* Transition from _something_ installed to _nothing_ | |
2250 | * installed. | |
2251 | */ | |
2252 | /* We expect this to be the selected route, so we want | |
2253 | * to tell others about this transistion. | |
2254 | */ | |
2255 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2256 | ||
188a00e0 MS |
2257 | /* Changed nexthops - update kernel/others */ |
2258 | dplane_route_notif_update(rn, re, DPLANE_OP_ROUTE_DELETE, ctx); | |
2259 | ||
efe6c026 | 2260 | /* Redistribute, lsp, and nht update */ |
40f321c0 | 2261 | redistribute_delete(dest_pfx, src_pfx, re, NULL); |
9287b4c5 | 2262 | } |
efe6c026 | 2263 | |
9287b4c5 MS |
2264 | /* Make any changes visible for lsp and nexthop-tracking processing */ |
2265 | zebra_rib_evaluate_rn_nexthops( | |
2266 | rn, zebra_router_get_next_sequence()); | |
efe6c026 | 2267 | |
9287b4c5 | 2268 | zebra_rib_evaluate_mpls(rn); |
941e261c | 2269 | |
54818e3b | 2270 | done: |
941e261c MS |
2271 | if (rn) |
2272 | route_unlock_node(rn); | |
2273 | ||
54818e3b MS |
2274 | /* Return context to dataplane module */ |
2275 | dplane_ctx_fini(&ctx); | |
2276 | } | |
2277 | ||
32367e7a MS |
2278 | /* |
2279 | * Process a node from the EVPN/VXLAN subqueue. | |
2280 | */ | |
2281 | static void process_subq_evpn(struct listnode *lnode) | |
2282 | { | |
2283 | struct wq_evpn_wrapper *w; | |
2284 | ||
2285 | /* In general, the list node points to a wrapper object | |
2286 | * holding the info necessary to make some update. | |
2287 | */ | |
2288 | w = listgetdata(lnode); | |
2289 | if (!w) | |
2290 | return; | |
2291 | ||
2292 | if (w->type == WQ_EVPN_WRAPPER_TYPE_VRFROUTE) { | |
2293 | if (w->add_p) | |
7f7e49d1 | 2294 | zebra_vxlan_evpn_vrf_route_add(w->vrf_id, &w->macaddr, |
32367e7a MS |
2295 | &w->ip, &w->prefix); |
2296 | else | |
2297 | zebra_vxlan_evpn_vrf_route_del(w->vrf_id, &w->ip, | |
2298 | &w->prefix); | |
2299 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_ES) { | |
2300 | if (w->add_p) | |
2301 | zebra_evpn_remote_es_add(&w->esi, w->ip.ipaddr_v4, | |
2302 | w->esr_rxed, w->df_alg, | |
2303 | w->df_pref); | |
2304 | else | |
2305 | zebra_evpn_remote_es_del(&w->esi, w->ip.ipaddr_v4); | |
7f7e49d1 MS |
2306 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_MACIP) { |
2307 | uint16_t ipa_len = 0; | |
2308 | ||
2309 | if (w->ip.ipa_type == IPADDR_V4) | |
2310 | ipa_len = IPV4_MAX_BYTELEN; | |
2311 | else if (w->ip.ipa_type == IPADDR_V6) | |
2312 | ipa_len = IPV6_MAX_BYTELEN; | |
2313 | ||
2314 | if (w->add_p) | |
2315 | zebra_evpn_rem_macip_add(w->vni, &w->macaddr, ipa_len, | |
2316 | &w->ip, w->flags, w->seq, | |
2317 | w->vtep_ip, &w->esi); | |
2318 | else | |
2319 | zebra_evpn_rem_macip_del(w->vni, &w->macaddr, ipa_len, | |
2320 | &w->ip, w->vtep_ip); | |
7e5b0b2b MS |
2321 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_VTEP) { |
2322 | if (w->add_p) | |
2323 | zebra_vxlan_remote_vtep_add(w->vrf_id, w->vni, | |
2324 | w->vtep_ip, w->flags); | |
2325 | else | |
2326 | zebra_vxlan_remote_vtep_del(w->vrf_id, w->vni, | |
2327 | w->vtep_ip); | |
32367e7a MS |
2328 | } |
2329 | ||
7e5b0b2b | 2330 | |
32367e7a MS |
2331 | XFREE(MTYPE_WQ_WRAPPER, w); |
2332 | } | |
2333 | ||
04bec7b2 MS |
2334 | /* |
2335 | * Process the nexthop-group workqueue subqueue | |
2336 | */ | |
e22e8001 | 2337 | static void process_subq_nhg(struct listnode *lnode) |
e96f9203 | 2338 | { |
04bec7b2 MS |
2339 | struct nhg_ctx *ctx; |
2340 | struct nhg_hash_entry *nhe, *newnhe; | |
2341 | struct wq_nhg_wrapper *w; | |
e22e8001 | 2342 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; |
5110a0c6 | 2343 | |
04bec7b2 | 2344 | w = listgetdata(lnode); |
e22e8001 | 2345 | |
04bec7b2 | 2346 | if (!w) |
e22e8001 SW |
2347 | return; |
2348 | ||
04bec7b2 MS |
2349 | /* Two types of object - an update from the local kernel, or |
2350 | * an nhg update from a daemon. | |
2351 | */ | |
2352 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) { | |
2353 | ctx = w->u.ctx; | |
2354 | ||
2355 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2356 | zlog_debug( | |
2357 | "NHG Context id=%u dequeued from sub-queue %u", | |
2358 | ctx->id, qindex); | |
2359 | ||
2360 | ||
2361 | /* Process nexthop group updates coming 'up' from the OS */ | |
2362 | nhg_ctx_process(ctx); | |
e22e8001 | 2363 | |
04bec7b2 MS |
2364 | } else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) { |
2365 | nhe = w->u.nhe; | |
2366 | ||
2367 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2368 | zlog_debug("NHG %u dequeued from sub-queue %u", | |
2369 | nhe->id, qindex); | |
2370 | ||
2371 | /* Process incoming nhg update, probably from a proto daemon */ | |
2372 | newnhe = zebra_nhg_proto_add(nhe->id, nhe->type, | |
2373 | nhe->zapi_instance, | |
32367e7a | 2374 | nhe->zapi_session, &nhe->nhg, 0); |
04bec7b2 MS |
2375 | |
2376 | /* Report error to daemon via ZAPI */ | |
2377 | if (newnhe == NULL) | |
2378 | zsend_nhg_notify(nhe->type, nhe->zapi_instance, | |
2379 | nhe->zapi_session, nhe->id, | |
2380 | ZAPI_NHG_FAIL_INSTALL); | |
2381 | ||
2382 | /* Free temp nhe - we own that memory. */ | |
2383 | zebra_nhg_free(nhe); | |
2384 | } | |
e22e8001 | 2385 | |
32367e7a | 2386 | XFREE(MTYPE_WQ_WRAPPER, w); |
e22e8001 SW |
2387 | } |
2388 | ||
2389 | static void process_subq_route(struct listnode *lnode, uint8_t qindex) | |
2390 | { | |
2391 | struct route_node *rnode = NULL; | |
2392 | rib_dest_t *dest = NULL; | |
2393 | struct zebra_vrf *zvrf = NULL; | |
5110a0c6 | 2394 | |
d62a17ae | 2395 | rnode = listgetdata(lnode); |
2396 | dest = rib_dest_from_rnode(rnode); | |
c2c02b76 DS |
2397 | assert(dest); |
2398 | ||
2399 | zvrf = rib_dest_vrf(dest); | |
41ec9222 | 2400 | |
d62a17ae | 2401 | rib_process(rnode); |
5110a0c6 | 2402 | |
d62a17ae | 2403 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
7e26b9d4 | 2404 | struct route_entry *re = NULL; |
efe6c026 | 2405 | |
7e26b9d4 DS |
2406 | /* |
2407 | * rib_process may have freed the dest | |
2408 | * as part of the garbage collection. Let's | |
2409 | * prevent stupidity from happening. | |
2410 | */ | |
2411 | dest = rib_dest_from_rnode(rnode); | |
2412 | if (dest) | |
2413 | re = re_list_first(&dest->routes); | |
2414 | ||
e658173a | 2415 | zlog_debug("%s(%u:%u):%pRN rn %p dequeued from sub-queue %u", |
04bec7b2 | 2416 | zvrf_name(zvrf), zvrf_id(zvrf), re ? re->table : 0, |
e658173a | 2417 | rnode, rnode, qindex); |
d62a17ae | 2418 | } |
41ec9222 | 2419 | |
d62a17ae | 2420 | if (rnode->info) |
2421 | UNSET_FLAG(rib_dest_from_rnode(rnode)->flags, | |
2422 | RIB_ROUTE_QUEUED(qindex)); | |
9fd92e3c | 2423 | |
d62a17ae | 2424 | route_unlock_node(rnode); |
e22e8001 SW |
2425 | } |
2426 | ||
32367e7a MS |
2427 | /* |
2428 | * Examine the specified subqueue; process one entry and return 1 if | |
2429 | * there is a node, return 0 otherwise. | |
e22e8001 SW |
2430 | */ |
2431 | static unsigned int process_subq(struct list *subq, uint8_t qindex) | |
2432 | { | |
2433 | struct listnode *lnode = listhead(subq); | |
2434 | ||
2435 | if (!lnode) | |
2436 | return 0; | |
2437 | ||
32367e7a MS |
2438 | if (qindex == META_QUEUE_EVPN) |
2439 | process_subq_evpn(lnode); | |
2440 | else if (qindex == route_info[ZEBRA_ROUTE_NHG].meta_q_map) | |
e22e8001 SW |
2441 | process_subq_nhg(lnode); |
2442 | else | |
2443 | process_subq_route(lnode, qindex); | |
2444 | ||
d62a17ae | 2445 | list_delete_node(subq, lnode); |
e22e8001 | 2446 | |
d62a17ae | 2447 | return 1; |
e96f9203 DO |
2448 | } |
2449 | ||
32367e7a | 2450 | /* Dispatch the meta queue by picking and processing the next node from |
d62a17ae | 2451 | * a non-empty sub-queue with lowest priority. wq is equal to zebra->ribq and |
04bec7b2 | 2452 | * data is pointed to the meta queue structure. |
e96f9203 | 2453 | */ |
d62a17ae | 2454 | static wq_item_status meta_queue_process(struct work_queue *dummy, void *data) |
e96f9203 | 2455 | { |
d62a17ae | 2456 | struct meta_queue *mq = data; |
2457 | unsigned i; | |
91f16812 MS |
2458 | uint32_t queue_len, queue_limit; |
2459 | ||
2460 | /* Ensure there's room for more dataplane updates */ | |
2461 | queue_limit = dplane_get_in_queue_limit(); | |
2462 | queue_len = dplane_get_in_queue_len(); | |
2463 | if (queue_len > queue_limit) { | |
2464 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
8b962e77 MS |
2465 | zlog_debug("rib queue: dplane queue len %u, limit %u, retrying", |
2466 | queue_len, queue_limit); | |
91f16812 MS |
2467 | |
2468 | /* Ensure that the meta-queue is actually enqueued */ | |
489a9614 | 2469 | if (work_queue_empty(zrouter.ribq)) |
ea45a4e7 | 2470 | work_queue_add(zrouter.ribq, zrouter.mq); |
91f16812 MS |
2471 | |
2472 | return WQ_QUEUE_BLOCKED; | |
2473 | } | |
5110a0c6 | 2474 | |
d62a17ae | 2475 | for (i = 0; i < MQ_SIZE; i++) |
2476 | if (process_subq(mq->subq[i], i)) { | |
2477 | mq->size--; | |
2478 | break; | |
2479 | } | |
2480 | return mq->size ? WQ_REQUEUE : WQ_SUCCESS; | |
e96f9203 DO |
2481 | } |
2482 | ||
f52ed677 DS |
2483 | |
2484 | /* | |
2485 | * Look into the RN and queue it into the highest priority queue | |
2486 | * at this point in time for processing. | |
2487 | * | |
2488 | * We will enqueue a route node only once per invocation. | |
2489 | * | |
2490 | * There are two possibilities here that should be kept in mind. | |
2491 | * If the original invocation has not been pulled off for processing | |
2492 | * yet, A subsuquent invocation can have a route entry with a better | |
2493 | * meta queue index value and we can have a situation where | |
2494 | * we might have the same node enqueued 2 times. Not necessarily | |
2495 | * an optimal situation but it should be ok. | |
2496 | * | |
2497 | * The other possibility is that the original invocation has not | |
2498 | * been pulled off for processing yet, A subsusquent invocation | |
2499 | * doesn't have a route_entry with a better meta-queue and the | |
2500 | * original metaqueue index value will win and we'll end up with | |
2501 | * the route node enqueued once. | |
e96f9203 | 2502 | */ |
e22e8001 | 2503 | static int rib_meta_queue_add(struct meta_queue *mq, void *data) |
e96f9203 | 2504 | { |
e22e8001 | 2505 | struct route_node *rn = NULL; |
f52ed677 DS |
2506 | struct route_entry *re = NULL, *curr_re = NULL; |
2507 | uint8_t qindex = MQ_SIZE, curr_qindex = MQ_SIZE; | |
5110a0c6 | 2508 | |
e22e8001 SW |
2509 | rn = (struct route_node *)data; |
2510 | ||
f52ed677 DS |
2511 | RNODE_FOREACH_RE (rn, curr_re) { |
2512 | curr_qindex = route_info[curr_re->type].meta_q_map; | |
d62a17ae | 2513 | |
f52ed677 DS |
2514 | if (curr_qindex <= qindex) { |
2515 | re = curr_re; | |
2516 | qindex = curr_qindex; | |
d62a17ae | 2517 | } |
f52ed677 | 2518 | } |
5110a0c6 | 2519 | |
f52ed677 | 2520 | if (!re) |
e22e8001 | 2521 | return -1; |
5110a0c6 | 2522 | |
f52ed677 DS |
2523 | /* Invariant: at this point we always have rn->info set. */ |
2524 | if (CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
2525 | RIB_ROUTE_QUEUED(qindex))) { | |
d62a17ae | 2526 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
2527 | rnode_debug(rn, re->vrf_id, | |
f52ed677 | 2528 | "rn %p is already queued in sub-queue %u", |
d62a17ae | 2529 | (void *)rn, qindex); |
e22e8001 | 2530 | return -1; |
d62a17ae | 2531 | } |
f52ed677 DS |
2532 | |
2533 | SET_FLAG(rib_dest_from_rnode(rn)->flags, RIB_ROUTE_QUEUED(qindex)); | |
2534 | listnode_add(mq->subq[qindex], rn); | |
2535 | route_lock_node(rn); | |
2536 | mq->size++; | |
2537 | ||
2538 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2539 | rnode_debug(rn, re->vrf_id, "queued rn %p into sub-queue %u", | |
2540 | (void *)rn, qindex); | |
e22e8001 SW |
2541 | |
2542 | return 0; | |
4d38fdb4 | 2543 | } |
2544 | ||
04bec7b2 | 2545 | static int rib_meta_queue_nhg_ctx_add(struct meta_queue *mq, void *data) |
4d38fdb4 | 2546 | { |
e22e8001 SW |
2547 | struct nhg_ctx *ctx = NULL; |
2548 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; | |
04bec7b2 | 2549 | struct wq_nhg_wrapper *w; |
fc328ac9 | 2550 | |
e22e8001 SW |
2551 | ctx = (struct nhg_ctx *)data; |
2552 | ||
2553 | if (!ctx) | |
2554 | return -1; | |
4d38fdb4 | 2555 | |
32367e7a | 2556 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); |
04bec7b2 MS |
2557 | |
2558 | w->type = WQ_NHG_WRAPPER_TYPE_CTX; | |
2559 | w->u.ctx = ctx; | |
2560 | ||
2561 | listnode_add(mq->subq[qindex], w); | |
e22e8001 SW |
2562 | mq->size++; |
2563 | ||
2564 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2565 | zlog_debug("NHG Context id=%u queued into sub-queue %u", | |
2566 | ctx->id, qindex); | |
2567 | ||
2568 | return 0; | |
2569 | } | |
2570 | ||
04bec7b2 MS |
2571 | static int rib_meta_queue_nhg_add(struct meta_queue *mq, void *data) |
2572 | { | |
2573 | struct nhg_hash_entry *nhe = NULL; | |
2574 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; | |
2575 | struct wq_nhg_wrapper *w; | |
2576 | ||
2577 | nhe = (struct nhg_hash_entry *)data; | |
2578 | ||
2579 | if (!nhe) | |
2580 | return -1; | |
2581 | ||
32367e7a | 2582 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); |
04bec7b2 MS |
2583 | |
2584 | w->type = WQ_NHG_WRAPPER_TYPE_NHG; | |
2585 | w->u.nhe = nhe; | |
2586 | ||
2587 | listnode_add(mq->subq[qindex], w); | |
2588 | mq->size++; | |
2589 | ||
2590 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2591 | zlog_debug("NHG id=%u queued into sub-queue %u", | |
2592 | nhe->id, qindex); | |
2593 | ||
2594 | return 0; | |
2595 | } | |
2596 | ||
32367e7a MS |
2597 | static int rib_meta_queue_evpn_add(struct meta_queue *mq, void *data) |
2598 | { | |
2599 | listnode_add(mq->subq[META_QUEUE_EVPN], data); | |
2600 | mq->size++; | |
2601 | ||
2602 | return 0; | |
2603 | } | |
2604 | ||
e22e8001 SW |
2605 | static int mq_add_handler(void *data, |
2606 | int (*mq_add_func)(struct meta_queue *mq, void *data)) | |
2607 | { | |
489a9614 | 2608 | if (zrouter.ribq == NULL) { |
e914ccbe | 2609 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 2610 | "%s: work_queue does not exist!", __func__); |
e22e8001 | 2611 | return -1; |
d62a17ae | 2612 | } |
2613 | ||
2614 | /* | |
2615 | * The RIB queue should normally be either empty or holding the only | |
2616 | * work_queue_item element. In the latter case this element would | |
2617 | * hold a pointer to the meta queue structure, which must be used to | |
2618 | * actually queue the route nodes to process. So create the MQ | |
2619 | * holder, if necessary, then push the work into it in any case. | |
2620 | * This semantics was introduced after 0.99.9 release. | |
2621 | */ | |
489a9614 | 2622 | if (work_queue_empty(zrouter.ribq)) |
ea45a4e7 | 2623 | work_queue_add(zrouter.ribq, zrouter.mq); |
e96f9203 | 2624 | |
e22e8001 SW |
2625 | return mq_add_func(zrouter.mq, data); |
2626 | } | |
fc328ac9 | 2627 | |
e22e8001 SW |
2628 | /* Add route_node to work queue and schedule processing */ |
2629 | int rib_queue_add(struct route_node *rn) | |
2630 | { | |
2631 | assert(rn); | |
2632 | ||
2633 | /* Pointless to queue a route_node with no RIB entries to add or remove | |
2634 | */ | |
2635 | if (!rnode_to_ribs(rn)) { | |
c10e14e9 DS |
2636 | zlog_debug("%s: called for route_node (%p, %u) with no ribs", |
2637 | __func__, (void *)rn, route_node_get_lock_count(rn)); | |
e22e8001 SW |
2638 | zlog_backtrace(LOG_DEBUG); |
2639 | return -1; | |
2640 | } | |
2641 | ||
04bec7b2 | 2642 | return mq_add_handler(rn, rib_meta_queue_add); |
e22e8001 SW |
2643 | } |
2644 | ||
04bec7b2 MS |
2645 | /* |
2646 | * Enqueue incoming nhg info from OS for processing | |
2647 | */ | |
2648 | int rib_queue_nhg_ctx_add(struct nhg_ctx *ctx) | |
e22e8001 SW |
2649 | { |
2650 | assert(ctx); | |
2651 | ||
04bec7b2 MS |
2652 | return mq_add_handler(ctx, rib_meta_queue_nhg_ctx_add); |
2653 | } | |
2654 | ||
2655 | /* | |
2656 | * Enqueue incoming nhg from proto daemon for processing | |
2657 | */ | |
2658 | int rib_queue_nhe_add(struct nhg_hash_entry *nhe) | |
2659 | { | |
2660 | if (nhe == NULL) | |
2661 | return -1; | |
2662 | ||
2663 | return mq_add_handler(nhe, rib_meta_queue_nhg_add); | |
2664 | } | |
2665 | ||
32367e7a MS |
2666 | /* |
2667 | * Enqueue evpn route for processing | |
2668 | */ | |
2669 | int zebra_rib_queue_evpn_route_add(vrf_id_t vrf_id, const struct ethaddr *rmac, | |
2670 | const struct ipaddr *vtep_ip, | |
2671 | const struct prefix *host_prefix) | |
2672 | { | |
2673 | struct wq_evpn_wrapper *w; | |
2674 | ||
2675 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2676 | ||
2677 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
2678 | w->add_p = true; | |
2679 | w->vrf_id = vrf_id; | |
7f7e49d1 | 2680 | w->macaddr = *rmac; |
32367e7a MS |
2681 | w->ip = *vtep_ip; |
2682 | w->prefix = *host_prefix; | |
2683 | ||
2684 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2685 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
2686 | vrf_id, vtep_ip, host_prefix); | |
2687 | ||
2688 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2689 | } | |
2690 | ||
2691 | int zebra_rib_queue_evpn_route_del(vrf_id_t vrf_id, | |
2692 | const struct ipaddr *vtep_ip, | |
2693 | const struct prefix *host_prefix) | |
2694 | { | |
2695 | struct wq_evpn_wrapper *w; | |
2696 | ||
2697 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2698 | ||
2699 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
2700 | w->add_p = false; | |
2701 | w->vrf_id = vrf_id; | |
2702 | w->ip = *vtep_ip; | |
2703 | w->prefix = *host_prefix; | |
2704 | ||
2705 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2706 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
2707 | vrf_id, vtep_ip, host_prefix); | |
2708 | ||
2709 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2710 | } | |
2711 | ||
2712 | /* Enqueue EVPN remote ES for processing */ | |
2713 | int zebra_rib_queue_evpn_rem_es_add(const esi_t *esi, | |
2714 | const struct in_addr *vtep_ip, | |
2715 | bool esr_rxed, uint8_t df_alg, | |
2716 | uint16_t df_pref) | |
2717 | { | |
2718 | struct wq_evpn_wrapper *w; | |
2719 | char buf[ESI_STR_LEN]; | |
2720 | ||
2721 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2722 | ||
2723 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
2724 | w->add_p = true; | |
2725 | w->esi = *esi; | |
2726 | w->ip.ipa_type = IPADDR_V4; | |
2727 | w->ip.ipaddr_v4 = *vtep_ip; | |
2728 | w->esr_rxed = esr_rxed; | |
2729 | w->df_alg = df_alg; | |
2730 | w->df_pref = df_pref; | |
2731 | ||
2732 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2733 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
2734 | esi_to_str(esi, buf, sizeof(buf))); | |
2735 | ||
2736 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2737 | } | |
2738 | ||
2739 | int zebra_rib_queue_evpn_rem_es_del(const esi_t *esi, | |
2740 | const struct in_addr *vtep_ip) | |
2741 | { | |
2742 | struct wq_evpn_wrapper *w; | |
2743 | char buf[ESI_STR_LEN]; | |
2744 | ||
2745 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2746 | ||
2747 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
2748 | w->add_p = false; | |
2749 | w->esi = *esi; | |
2750 | w->ip.ipa_type = IPADDR_V4; | |
2751 | w->ip.ipaddr_v4 = *vtep_ip; | |
2752 | ||
2753 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
2754 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
2755 | esi_to_str(esi, buf, sizeof(buf)); | |
2756 | else | |
2757 | strlcpy(buf, "-", sizeof(buf)); | |
2758 | ||
2759 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
2760 | buf); | |
2761 | } | |
2762 | ||
2763 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2764 | } | |
2765 | ||
7f7e49d1 MS |
2766 | /* |
2767 | * Enqueue EVPN remote macip update for processing | |
2768 | */ | |
2769 | int zebra_rib_queue_evpn_rem_macip_add(vni_t vni, const struct ethaddr *macaddr, | |
2770 | const struct ipaddr *ipaddr, | |
2771 | uint8_t flags, uint32_t seq, | |
2772 | struct in_addr vtep_ip, const esi_t *esi) | |
2773 | { | |
2774 | struct wq_evpn_wrapper *w; | |
2775 | char buf[ESI_STR_LEN]; | |
2776 | ||
2777 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2778 | ||
2779 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
2780 | w->add_p = true; | |
2781 | w->vni = vni; | |
2782 | w->macaddr = *macaddr; | |
2783 | w->ip = *ipaddr; | |
2784 | w->flags = flags; | |
2785 | w->seq = seq; | |
2786 | w->vtep_ip = vtep_ip; | |
2787 | w->esi = *esi; | |
2788 | ||
2789 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
2790 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
2791 | esi_to_str(esi, buf, sizeof(buf)); | |
2792 | else | |
2793 | strlcpy(buf, "-", sizeof(buf)); | |
2794 | ||
2795 | zlog_debug("%s: mac %pEA, vtep %pI4, esi %s enqueued", __func__, | |
2796 | macaddr, &vtep_ip, buf); | |
2797 | } | |
2798 | ||
2799 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2800 | } | |
2801 | ||
2802 | int zebra_rib_queue_evpn_rem_macip_del(vni_t vni, const struct ethaddr *macaddr, | |
2803 | const struct ipaddr *ip, | |
2804 | struct in_addr vtep_ip) | |
2805 | { | |
2806 | struct wq_evpn_wrapper *w; | |
2807 | ||
2808 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2809 | ||
2810 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
2811 | w->add_p = false; | |
2812 | w->vni = vni; | |
2813 | w->macaddr = *macaddr; | |
2814 | w->ip = *ip; | |
2815 | w->vtep_ip = vtep_ip; | |
2816 | ||
2817 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2818 | zlog_debug("%s: mac %pEA, vtep %pI4 enqueued", __func__, | |
2819 | macaddr, &vtep_ip); | |
2820 | ||
2821 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2822 | } | |
2823 | ||
7e5b0b2b MS |
2824 | /* |
2825 | * Enqueue remote VTEP address for processing | |
2826 | */ | |
2827 | int zebra_rib_queue_evpn_rem_vtep_add(vrf_id_t vrf_id, vni_t vni, | |
2828 | struct in_addr vtep_ip, int flood_control) | |
2829 | { | |
2830 | struct wq_evpn_wrapper *w; | |
2831 | ||
2832 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2833 | ||
2834 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
2835 | w->add_p = true; | |
2836 | w->vrf_id = vrf_id; | |
2837 | w->vni = vni; | |
2838 | w->vtep_ip = vtep_ip; | |
2839 | w->flags = flood_control; | |
2840 | ||
2841 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2842 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
2843 | &vtep_ip); | |
2844 | ||
2845 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2846 | } | |
2847 | ||
2848 | int zebra_rib_queue_evpn_rem_vtep_del(vrf_id_t vrf_id, vni_t vni, | |
2849 | struct in_addr vtep_ip) | |
2850 | { | |
2851 | struct wq_evpn_wrapper *w; | |
2852 | ||
2853 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2854 | ||
2855 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
2856 | w->add_p = false; | |
2857 | w->vrf_id = vrf_id; | |
2858 | w->vni = vni; | |
2859 | w->vtep_ip = vtep_ip; | |
2860 | ||
2861 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2862 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
2863 | &vtep_ip); | |
2864 | ||
2865 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2866 | } | |
2867 | ||
32367e7a MS |
2868 | /* Clean up the EVPN meta-queue list */ |
2869 | static void evpn_meta_queue_free(struct list *l) | |
2870 | { | |
2871 | struct listnode *node; | |
2872 | struct wq_evpn_wrapper *w; | |
2873 | ||
2874 | /* Free the node wrapper object, and the struct it wraps */ | |
2875 | while ((node = listhead(l)) != NULL) { | |
2876 | w = node->data; | |
2877 | node->data = NULL; | |
2878 | ||
2879 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2880 | ||
2881 | list_delete_node(l, node); | |
2882 | } | |
2883 | } | |
2884 | ||
04bec7b2 MS |
2885 | /* Clean up the nhg meta-queue list */ |
2886 | static void nhg_meta_queue_free(struct list *l) | |
2887 | { | |
2888 | struct wq_nhg_wrapper *w; | |
2889 | struct listnode *node; | |
2890 | ||
2891 | /* Free the node wrapper object, and the struct it wraps */ | |
2892 | while ((node = listhead(l)) != NULL) { | |
2893 | w = node->data; | |
2894 | node->data = NULL; | |
2895 | ||
2896 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) | |
2897 | nhg_ctx_free(&w->u.ctx); | |
2898 | else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) | |
2899 | zebra_nhg_free(w->u.nhe); | |
2900 | ||
32367e7a | 2901 | XFREE(MTYPE_WQ_WRAPPER, w); |
04bec7b2 MS |
2902 | |
2903 | list_delete_node(l, node); | |
2904 | } | |
4d38fdb4 | 2905 | } |
2906 | ||
5110a0c6 SH |
2907 | /* Create new meta queue. |
2908 | A destructor function doesn't seem to be necessary here. | |
2909 | */ | |
d62a17ae | 2910 | static struct meta_queue *meta_queue_new(void) |
e96f9203 | 2911 | { |
d62a17ae | 2912 | struct meta_queue *new; |
2913 | unsigned i; | |
5110a0c6 | 2914 | |
d62a17ae | 2915 | new = XCALLOC(MTYPE_WORK_QUEUE, sizeof(struct meta_queue)); |
e96f9203 | 2916 | |
d62a17ae | 2917 | for (i = 0; i < MQ_SIZE; i++) { |
2918 | new->subq[i] = list_new(); | |
2919 | assert(new->subq[i]); | |
2920 | } | |
5110a0c6 | 2921 | |
d62a17ae | 2922 | return new; |
e96f9203 DO |
2923 | } |
2924 | ||
d62a17ae | 2925 | void meta_queue_free(struct meta_queue *mq) |
5a8dfcd8 | 2926 | { |
d62a17ae | 2927 | unsigned i; |
5a8dfcd8 | 2928 | |
04bec7b2 MS |
2929 | for (i = 0; i < MQ_SIZE; i++) { |
2930 | /* Some subqueues may need cleanup - nhgs for example */ | |
2931 | if (i == route_info[ZEBRA_ROUTE_NHG].meta_q_map) | |
2932 | nhg_meta_queue_free(mq->subq[i]); | |
32367e7a MS |
2933 | else if (i == META_QUEUE_EVPN) |
2934 | evpn_meta_queue_free(mq->subq[i]); | |
04bec7b2 | 2935 | |
6a154c88 | 2936 | list_delete(&mq->subq[i]); |
04bec7b2 | 2937 | } |
5a8dfcd8 | 2938 | |
d62a17ae | 2939 | XFREE(MTYPE_WORK_QUEUE, mq); |
5a8dfcd8 RW |
2940 | } |
2941 | ||
4d38fdb4 | 2942 | /* initialise zebra rib work queue */ |
2561d12e | 2943 | static void rib_queue_init(void) |
4d38fdb4 | 2944 | { |
489a9614 DS |
2945 | if (!(zrouter.ribq = work_queue_new(zrouter.master, |
2946 | "route_node processing"))) { | |
e914ccbe | 2947 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 2948 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 2949 | return; |
2950 | } | |
4d38fdb4 | 2951 | |
d62a17ae | 2952 | /* fill in the work queue spec */ |
489a9614 DS |
2953 | zrouter.ribq->spec.workfunc = &meta_queue_process; |
2954 | zrouter.ribq->spec.errorfunc = NULL; | |
46a4e345 | 2955 | zrouter.ribq->spec.completion_func = NULL; |
d62a17ae | 2956 | /* XXX: TODO: These should be runtime configurable via vty */ |
489a9614 DS |
2957 | zrouter.ribq->spec.max_retries = 3; |
2958 | zrouter.ribq->spec.hold = ZEBRA_RIB_PROCESS_HOLD_TIME; | |
2959 | zrouter.ribq->spec.retry = ZEBRA_RIB_PROCESS_RETRY_TIME; | |
d62a17ae | 2960 | |
ea45a4e7 | 2961 | if (!(zrouter.mq = meta_queue_new())) { |
e914ccbe | 2962 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 2963 | "%s: could not initialise meta queue!", __func__); |
d62a17ae | 2964 | return; |
2965 | } | |
2966 | return; | |
718e3744 | 2967 | } |
2968 | ||
434434f7 DS |
2969 | rib_dest_t *zebra_rib_create_dest(struct route_node *rn) |
2970 | { | |
2971 | rib_dest_t *dest; | |
2972 | ||
2973 | dest = XCALLOC(MTYPE_RIB_DEST, sizeof(rib_dest_t)); | |
aa57abfb | 2974 | rnh_list_init(&dest->nht); |
daaeaa21 | 2975 | re_list_init(&dest->routes); |
434434f7 DS |
2976 | route_lock_node(rn); /* rn route table reference */ |
2977 | rn->info = dest; | |
2978 | dest->rnode = rn; | |
2979 | ||
2980 | return dest; | |
2981 | } | |
2982 | ||
6d691129 PJ |
2983 | /* RIB updates are processed via a queue of pointers to route_nodes. |
2984 | * | |
2985 | * The queue length is bounded by the maximal size of the routing table, | |
2986 | * as a route_node will not be requeued, if already queued. | |
2987 | * | |
f0f77c9a DS |
2988 | * REs are submitted via rib_addnode or rib_delnode which set minimal |
2989 | * state, or static_install_route (when an existing RE is updated) | |
3c0755dc | 2990 | * and then submit route_node to queue for best-path selection later. |
f0f77c9a | 2991 | * Order of add/delete state changes are preserved for any given RE. |
6d691129 | 2992 | * |
f0f77c9a | 2993 | * Deleted REs are reaped during best-path selection. |
6d691129 PJ |
2994 | * |
2995 | * rib_addnode | |
f0f77c9a DS |
2996 | * |-> rib_link or unset ROUTE_ENTRY_REMOVE |->Update kernel with |
2997 | * |-------->| | best RE, if required | |
3c0755dc PJ |
2998 | * | | |
2999 | * static_install->|->rib_addqueue...... -> rib_process | |
3000 | * | | | |
3001 | * |-------->| |-> rib_unlink | |
f0f77c9a DS |
3002 | * |-> set ROUTE_ENTRY_REMOVE | |
3003 | * rib_delnode (RE freed) | |
6d691129 | 3004 | * |
9fd92e3c AS |
3005 | * The 'info' pointer of a route_node points to a rib_dest_t |
3006 | * ('dest'). Queueing state for a route_node is kept on the dest. The | |
3007 | * dest is created on-demand by rib_link() and is kept around at least | |
3008 | * as long as there are ribs hanging off it (@see rib_gc_dest()). | |
d62a17ae | 3009 | * |
32367e7a | 3010 | * Refcounting (aka "locking" throughout the Zebra and FRR code): |
6d691129 PJ |
3011 | * |
3012 | * - route_nodes: refcounted by: | |
9fd92e3c AS |
3013 | * - dest attached to route_node: |
3014 | * - managed by: rib_link/rib_gc_dest | |
6d691129 PJ |
3015 | * - route_node processing queue |
3016 | * - managed by: rib_addqueue, rib_process. | |
3017 | * | |
3018 | */ | |
d62a17ae | 3019 | |
f0f77c9a | 3020 | /* Add RE to head of the route node. */ |
d62a17ae | 3021 | static void rib_link(struct route_node *rn, struct route_entry *re, int process) |
3022 | { | |
d62a17ae | 3023 | rib_dest_t *dest; |
3024 | afi_t afi; | |
3025 | const char *rmap_name; | |
9fd92e3c | 3026 | |
d62a17ae | 3027 | assert(re && rn); |
9fd92e3c | 3028 | |
d62a17ae | 3029 | dest = rib_dest_from_rnode(rn); |
3030 | if (!dest) { | |
3031 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3032 | rnode_debug(rn, re->vrf_id, "rn %p adding dest", rn); | |
7a4bb9c5 | 3033 | |
434434f7 | 3034 | dest = zebra_rib_create_dest(rn); |
d62a17ae | 3035 | } |
2263a412 | 3036 | |
045207e2 | 3037 | re_list_add_head(&dest->routes, re); |
d62a17ae | 3038 | |
3039 | afi = (rn->p.family == AF_INET) | |
3040 | ? AFI_IP | |
3041 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3042 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3043 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3044 | ||
d62a17ae | 3045 | rmap_name = zebra_get_import_table_route_map(afi, re->table); |
fe257ae7 | 3046 | zebra_add_import_table_entry(zvrf, rn, re, rmap_name); |
d62a17ae | 3047 | } else if (process) |
3048 | rib_queue_add(rn); | |
3049 | } | |
3050 | ||
7e24fdf3 DS |
3051 | static void rib_addnode(struct route_node *rn, |
3052 | struct route_entry *re, int process) | |
d62a17ae | 3053 | { |
3054 | /* RE node has been un-removed before route-node is processed. | |
3055 | * route_node must hence already be on the queue for processing.. | |
3056 | */ | |
3057 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
3058 | if (IS_ZEBRA_DEBUG_RIB) | |
3059 | rnode_debug(rn, re->vrf_id, "rn %p, un-removed re %p", | |
3060 | (void *)rn, (void *)re); | |
3061 | ||
3062 | UNSET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3063 | return; | |
3064 | } | |
3065 | rib_link(rn, re, process); | |
6d691129 PJ |
3066 | } |
3067 | ||
9fd92e3c AS |
3068 | /* |
3069 | * rib_unlink | |
3070 | * | |
3071 | * Detach a rib structure from a route_node. | |
3072 | * | |
3073 | * Note that a call to rib_unlink() should be followed by a call to | |
3074 | * rib_gc_dest() at some point. This allows a rib_dest_t that is no | |
3075 | * longer required to be deleted. | |
3076 | */ | |
d62a17ae | 3077 | void rib_unlink(struct route_node *rn, struct route_entry *re) |
6d691129 | 3078 | { |
d62a17ae | 3079 | rib_dest_t *dest; |
9fd92e3c | 3080 | |
d62a17ae | 3081 | assert(rn && re); |
6d691129 | 3082 | |
d62a17ae | 3083 | if (IS_ZEBRA_DEBUG_RIB) |
3084 | rnode_debug(rn, re->vrf_id, "rn %p, re %p", (void *)rn, | |
3085 | (void *)re); | |
6d691129 | 3086 | |
d62a17ae | 3087 | dest = rib_dest_from_rnode(rn); |
6d691129 | 3088 | |
045207e2 | 3089 | re_list_del(&dest->routes, re); |
7a4bb9c5 | 3090 | |
2eb07de3 DS |
3091 | if (dest->selected_fib == re) |
3092 | dest->selected_fib = NULL; | |
3093 | ||
1d48702e MS |
3094 | if (re->nhe && re->nhe_id) { |
3095 | assert(re->nhe->id == re->nhe_id); | |
3096 | zebra_nhg_decrement_ref(re->nhe); | |
3097 | } else if (re->nhe && re->nhe->nhg.nexthop) | |
c415d895 | 3098 | nexthops_free(re->nhe->nhg.nexthop); |
22bcedb2 | 3099 | |
ee5e8a48 MS |
3100 | nexthops_free(re->fib_ng.nexthop); |
3101 | ||
224ccf29 | 3102 | zapi_opaque_free(re->opaque); |
a29a6001 | 3103 | |
d62a17ae | 3104 | XFREE(MTYPE_RE, re); |
3105 | } | |
3106 | ||
3107 | void rib_delnode(struct route_node *rn, struct route_entry *re) | |
3108 | { | |
3109 | afi_t afi; | |
3110 | ||
3111 | if (IS_ZEBRA_DEBUG_RIB) | |
3112 | rnode_debug(rn, re->vrf_id, "rn %p, re %p, removing", | |
3113 | (void *)rn, (void *)re); | |
3114 | SET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3115 | ||
3116 | afi = (rn->p.family == AF_INET) | |
3117 | ? AFI_IP | |
3118 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3119 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3120 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3121 | ||
3122 | zebra_del_import_table_entry(zvrf, rn, re); | |
d62a17ae | 3123 | /* Just clean up if non main table */ |
e658173a DS |
3124 | if (IS_ZEBRA_DEBUG_RIB) |
3125 | zlog_debug("%s(%u):%pRN: Freeing route rn %p, re %p (%s)", | |
3126 | vrf_id_to_name(re->vrf_id), re->vrf_id, rn, | |
bd47f3a3 | 3127 | rn, re, zebra_route_string(re->type)); |
7a4bb9c5 | 3128 | |
d62a17ae | 3129 | rib_unlink(rn, re); |
3130 | } else { | |
3131 | rib_queue_add(rn); | |
3132 | } | |
718e3744 | 3133 | } |
3134 | ||
6d81b590 MS |
3135 | /* |
3136 | * Helper that debugs a single nexthop within a route-entry | |
3137 | */ | |
3138 | static void _route_entry_dump_nh(const struct route_entry *re, | |
3139 | const char *straddr, | |
3140 | const struct nexthop *nexthop) | |
3141 | { | |
3142 | char nhname[PREFIX_STRLEN]; | |
3143 | char backup_str[50]; | |
3144 | char wgt_str[50]; | |
474aebd9 | 3145 | char temp_str[10]; |
cbe5bafb | 3146 | char label_str[MPLS_LABEL_STRLEN]; |
474aebd9 | 3147 | int i; |
6d81b590 MS |
3148 | struct interface *ifp; |
3149 | struct vrf *vrf = vrf_lookup_by_id(nexthop->vrf_id); | |
3150 | ||
3151 | switch (nexthop->type) { | |
3152 | case NEXTHOP_TYPE_BLACKHOLE: | |
772270f3 | 3153 | snprintf(nhname, sizeof(nhname), "Blackhole"); |
6d81b590 MS |
3154 | break; |
3155 | case NEXTHOP_TYPE_IFINDEX: | |
3156 | ifp = if_lookup_by_index(nexthop->ifindex, nexthop->vrf_id); | |
772270f3 QY |
3157 | snprintf(nhname, sizeof(nhname), "%s", |
3158 | ifp ? ifp->name : "Unknown"); | |
6d81b590 MS |
3159 | break; |
3160 | case NEXTHOP_TYPE_IPV4: | |
3161 | /* fallthrough */ | |
3162 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
3163 | inet_ntop(AF_INET, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
3164 | break; | |
3165 | case NEXTHOP_TYPE_IPV6: | |
3166 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3167 | inet_ntop(AF_INET6, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
3168 | break; | |
3169 | } | |
3170 | ||
cbe5bafb MS |
3171 | /* Label stack */ |
3172 | label_str[0] = '\0'; | |
3173 | if (nexthop->nh_label && nexthop->nh_label->num_labels > 0) { | |
3174 | mpls_label2str(nexthop->nh_label->num_labels, | |
3175 | nexthop->nh_label->label, label_str, | |
3176 | sizeof(label_str), 0 /*pretty*/); | |
3177 | strlcat(label_str, ", ", sizeof(label_str)); | |
3178 | } | |
3179 | ||
6d81b590 MS |
3180 | backup_str[0] = '\0'; |
3181 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3182 | snprintf(backup_str, sizeof(backup_str), "backup "); |
3183 | for (i = 0; i < nexthop->backup_num; i++) { | |
3184 | snprintf(temp_str, sizeof(temp_str), "%d, ", | |
3185 | nexthop->backup_idx[i]); | |
3186 | strlcat(backup_str, temp_str, sizeof(backup_str)); | |
3187 | } | |
6d81b590 MS |
3188 | } |
3189 | ||
3190 | wgt_str[0] = '\0'; | |
3191 | if (nexthop->weight) | |
3192 | snprintf(wgt_str, sizeof(wgt_str), "wgt %d,", nexthop->weight); | |
3193 | ||
cbe5bafb | 3194 | zlog_debug("%s: %s %s[%u] %svrf %s(%u) %s%s with flags %s%s%s%s%s%s%s%s", |
6d81b590 | 3195 | straddr, (nexthop->rparent ? " NH" : "NH"), nhname, |
cbe5bafb | 3196 | nexthop->ifindex, label_str, vrf ? vrf->name : "Unknown", |
6d81b590 MS |
3197 | nexthop->vrf_id, |
3198 | wgt_str, backup_str, | |
3199 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
3200 | ? "ACTIVE " | |
3201 | : ""), | |
3202 | (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) | |
3203 | ? "FIB " | |
3204 | : ""), | |
3205 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
3206 | ? "RECURSIVE " | |
3207 | : ""), | |
3208 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK) | |
3209 | ? "ONLINK " | |
3210 | : ""), | |
3211 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_DUPLICATE) | |
3212 | ? "DUPLICATE " | |
aab4eca1 DS |
3213 | : ""), |
3214 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RNH_FILTERED) | |
3215 | ? "FILTERED " : ""), | |
3216 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP) | |
3217 | ? "BACKUP " : ""), | |
3218 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE) | |
3219 | ? "SRTE " : "")); | |
6d81b590 MS |
3220 | |
3221 | } | |
3222 | ||
f0f77c9a | 3223 | /* This function dumps the contents of a given RE entry into |
dc95824a DO |
3224 | * standard debug log. Calling function name and IP prefix in |
3225 | * question are passed as 1st and 2nd arguments. | |
3226 | */ | |
d62a17ae | 3227 | void _route_entry_dump(const char *func, union prefixconstptr pp, |
3228 | union prefixconstptr src_pp, | |
3229 | const struct route_entry *re) | |
3230 | { | |
d62a17ae | 3231 | const struct prefix *src_p = src_pp.p; |
3232 | bool is_srcdst = src_p && src_p->prefixlen; | |
3233 | char straddr[PREFIX_STRLEN]; | |
3234 | char srcaddr[PREFIX_STRLEN]; | |
61e6de9d DS |
3235 | char flags_buf[128]; |
3236 | char status_buf[128]; | |
d62a17ae | 3237 | struct nexthop *nexthop; |
c479e756 | 3238 | struct vrf *vrf = vrf_lookup_by_id(re->vrf_id); |
6d81b590 | 3239 | struct nexthop_group *nhg; |
d62a17ae | 3240 | |
5d27875b DL |
3241 | prefix2str(pp, straddr, sizeof(straddr)); |
3242 | ||
c479e756 | 3243 | zlog_debug("%s: dumping RE entry %p for %s%s%s vrf %s(%u)", func, |
5d27875b | 3244 | (const void *)re, straddr, |
d62a17ae | 3245 | is_srcdst ? " from " : "", |
3246 | is_srcdst ? prefix2str(src_pp, srcaddr, sizeof(srcaddr)) | |
3247 | : "", | |
c479e756 | 3248 | VRF_LOGNAME(vrf), re->vrf_id); |
cc54cfee | 3249 | zlog_debug("%s: uptime == %lu, type == %u, instance == %d, table == %d", |
53c16fbe | 3250 | straddr, (unsigned long)re->uptime, re->type, re->instance, |
cc54cfee | 3251 | re->table); |
61e6de9d DS |
3252 | zlog_debug( |
3253 | "%s: metric == %u, mtu == %u, distance == %u, flags == %sstatus == %s", | |
3254 | straddr, re->metric, re->mtu, re->distance, | |
3255 | zclient_dump_route_flags(re->flags, flags_buf, | |
3256 | sizeof(flags_buf)), | |
3257 | _dump_re_status(re, status_buf, sizeof(status_buf))); | |
53c16fbe | 3258 | zlog_debug("%s: nexthop_num == %u, nexthop_active_num == %u", straddr, |
c415d895 MS |
3259 | nexthop_group_nexthop_num(&(re->nhe->nhg)), |
3260 | nexthop_group_active_nexthop_num(&(re->nhe->nhg))); | |
d62a17ae | 3261 | |
6d81b590 MS |
3262 | /* Dump nexthops */ |
3263 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) | |
3264 | _route_entry_dump_nh(re, straddr, nexthop); | |
2d68a0f2 | 3265 | |
6d81b590 MS |
3266 | if (zebra_nhg_get_backup_nhg(re->nhe)) { |
3267 | zlog_debug("%s: backup nexthops:", straddr); | |
3268 | ||
3269 | nhg = zebra_nhg_get_backup_nhg(re->nhe); | |
3270 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) | |
3271 | _route_entry_dump_nh(re, straddr, nexthop); | |
d62a17ae | 3272 | } |
6d81b590 | 3273 | |
53c16fbe | 3274 | zlog_debug("%s: dump complete", straddr); |
dc95824a DO |
3275 | } |
3276 | ||
1d48702e MS |
3277 | /* |
3278 | * Internal route-add implementation; there are a couple of different public | |
3279 | * signatures. Callers in this path are responsible for the memory they | |
3280 | * allocate: if they allocate a nexthop_group or backup nexthop info, they | |
3281 | * must free those objects. If this returns < 0, an error has occurred and the | |
3282 | * route_entry 're' has not been captured; the caller should free that also. | |
38c764dd DS |
3283 | * |
3284 | * -1 -> error | |
3285 | * 0 -> Add | |
3286 | * 1 -> update | |
1d48702e MS |
3287 | */ |
3288 | int rib_add_multipath_nhe(afi_t afi, safi_t safi, struct prefix *p, | |
6d81b590 | 3289 | struct prefix_ipv6 *src_p, struct route_entry *re, |
1d48702e | 3290 | struct nhg_hash_entry *re_nhe) |
718e3744 | 3291 | { |
98cda54a | 3292 | struct nhg_hash_entry *nhe = NULL; |
d62a17ae | 3293 | struct route_table *table; |
3294 | struct route_node *rn; | |
0ca6f3b1 | 3295 | struct route_entry *same = NULL, *first_same = NULL; |
d62a17ae | 3296 | int ret = 0; |
0ca6f3b1 MS |
3297 | int same_count = 0; |
3298 | rib_dest_t *dest; | |
b4c034b0 | 3299 | |
1d48702e MS |
3300 | if (!re || !re_nhe) |
3301 | return -1; | |
b4c034b0 | 3302 | |
1f610a1f | 3303 | assert(!src_p || !src_p->prefixlen || afi == AFI_IP6); |
05737783 | 3304 | |
d62a17ae | 3305 | /* Lookup table. */ |
c7c0b007 SW |
3306 | table = zebra_vrf_get_table_with_table_id(afi, safi, re->vrf_id, |
3307 | re->table); | |
1d48702e MS |
3308 | if (!table) |
3309 | return -1; | |
cddf391b | 3310 | |
50db3f2f SW |
3311 | if (re->nhe_id > 0) { |
3312 | nhe = zebra_nhg_lookup_id(re->nhe_id); | |
98cda54a SW |
3313 | |
3314 | if (!nhe) { | |
3315 | flog_err( | |
3316 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
3317 | "Zebra failed to find the nexthop hash entry for id=%u in a route entry", | |
50db3f2f | 3318 | re->nhe_id); |
1d48702e | 3319 | |
98cda54a SW |
3320 | return -1; |
3321 | } | |
3322 | } else { | |
377e29f7 MS |
3323 | /* Lookup nhe from route information */ |
3324 | nhe = zebra_nhg_rib_find_nhe(re_nhe, afi); | |
98cda54a | 3325 | if (!nhe) { |
98cda54a SW |
3326 | char buf2[PREFIX_STRLEN] = ""; |
3327 | ||
3328 | flog_err( | |
3329 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
2dbe669b DA |
3330 | "Zebra failed to find or create a nexthop hash entry for %pFX%s%s", |
3331 | p, src_p ? " from " : "", | |
98cda54a SW |
3332 | src_p ? prefix2str(src_p, buf2, sizeof(buf2)) |
3333 | : ""); | |
3334 | ||
98cda54a SW |
3335 | return -1; |
3336 | } | |
98cda54a SW |
3337 | } |
3338 | ||
4b87c90d SW |
3339 | /* |
3340 | * Attach the re to the nhe's nexthop group. | |
3341 | * | |
3342 | * TODO: This will need to change when we start getting IDs from upper | |
3343 | * level protocols, as the refcnt might be wrong, since it checks | |
3344 | * if old_id != new_id. | |
3345 | */ | |
5463ce26 | 3346 | route_entry_update_nhe(re, nhe); |
98cda54a | 3347 | |
d62a17ae | 3348 | /* Make it sure prefixlen is applied to the prefix. */ |
3349 | apply_mask(p); | |
3350 | if (src_p) | |
3351 | apply_mask_ipv6(src_p); | |
718e3744 | 3352 | |
d62a17ae | 3353 | /* Set default distance by route type. */ |
eea2ef07 | 3354 | if (re->distance == 0) |
0492eea0 | 3355 | re->distance = route_distance(re->type); |
718e3744 | 3356 | |
d62a17ae | 3357 | /* Lookup route node.*/ |
3358 | rn = srcdest_rnode_get(table, p, src_p); | |
718e3744 | 3359 | |
40ecd8e4 DS |
3360 | /* |
3361 | * If same type of route are installed, treat it as a implicit | |
9db35a5e | 3362 | * withdraw. If the user has specified the No route replace semantics |
40ecd8e4 DS |
3363 | * for the install don't do a route replace. |
3364 | */ | |
a2addae8 | 3365 | RNODE_FOREACH_RE (rn, same) { |
0ca6f3b1 MS |
3366 | if (CHECK_FLAG(same->status, ROUTE_ENTRY_REMOVED)) { |
3367 | same_count++; | |
d62a17ae | 3368 | continue; |
0ca6f3b1 | 3369 | } |
41ec9222 | 3370 | |
9db35a5e | 3371 | /* Compare various route_entry properties */ |
0ca6f3b1 MS |
3372 | if (rib_compare_routes(re, same)) { |
3373 | same_count++; | |
3374 | ||
3375 | if (first_same == NULL) | |
3376 | first_same = same; | |
3377 | } | |
d62a17ae | 3378 | } |
718e3744 | 3379 | |
0ca6f3b1 MS |
3380 | same = first_same; |
3381 | ||
cf363e1b MS |
3382 | /* If this route is kernel/connected route, notify the dataplane. */ |
3383 | if (RIB_SYSTEM_ROUTE(re)) { | |
3384 | /* Notify dataplane */ | |
3385 | dplane_sys_route_add(rn, re); | |
3386 | } | |
3387 | ||
d62a17ae | 3388 | /* Link new re to node.*/ |
3389 | if (IS_ZEBRA_DEBUG_RIB) { | |
2da33d6b | 3390 | rnode_debug(rn, re->vrf_id, |
0ca6f3b1 MS |
3391 | "Inserting route rn %p, re %p (%s) existing %p, same_count %d", |
3392 | rn, re, zebra_route_string(re->type), same, | |
3393 | same_count); | |
718e3744 | 3394 | |
d62a17ae | 3395 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
3396 | route_entry_dump(p, src_p, re); | |
718e3744 | 3397 | } |
6883bf8d DS |
3398 | |
3399 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
d62a17ae | 3400 | rib_addnode(rn, re, 1); |
6b0655a2 | 3401 | |
d62a17ae | 3402 | /* Free implicit route.*/ |
38c764dd DS |
3403 | if (same) { |
3404 | ret = 1; | |
d62a17ae | 3405 | rib_delnode(rn, same); |
38c764dd | 3406 | } |
718e3744 | 3407 | |
0ca6f3b1 MS |
3408 | /* See if we can remove some RE entries that are queued for |
3409 | * removal, but won't be considered in rib processing. | |
3410 | */ | |
3411 | dest = rib_dest_from_rnode(rn); | |
3412 | RNODE_FOREACH_RE_SAFE (rn, re, same) { | |
3413 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
3414 | /* If the route was used earlier, must retain it. */ | |
3415 | if (dest && re == dest->selected_fib) | |
3416 | continue; | |
3417 | ||
3418 | if (IS_ZEBRA_DEBUG_RIB) | |
3419 | rnode_debug(rn, re->vrf_id, "rn %p, removing unneeded re %p", | |
3420 | rn, re); | |
3421 | ||
3422 | rib_unlink(rn, re); | |
3423 | } | |
3424 | } | |
3425 | ||
d62a17ae | 3426 | route_unlock_node(rn); |
3427 | return ret; | |
3428 | } | |
3429 | ||
1d48702e MS |
3430 | /* |
3431 | * Add a single route. | |
3432 | */ | |
3433 | int rib_add_multipath(afi_t afi, safi_t safi, struct prefix *p, | |
3434 | struct prefix_ipv6 *src_p, struct route_entry *re, | |
3435 | struct nexthop_group *ng) | |
3436 | { | |
3437 | int ret; | |
377e29f7 | 3438 | struct nhg_hash_entry nhe; |
1d48702e MS |
3439 | |
3440 | if (!re) | |
3441 | return -1; | |
3442 | ||
3443 | /* We either need nexthop(s) or an existing nexthop id */ | |
3444 | if (ng == NULL && re->nhe_id == 0) | |
3445 | return -1; | |
3446 | ||
3447 | /* | |
3448 | * Use a temporary nhe to convey info to the common/main api. | |
3449 | */ | |
377e29f7 | 3450 | zebra_nhe_init(&nhe, afi, (ng ? ng->nexthop : NULL)); |
1d48702e MS |
3451 | if (ng) |
3452 | nhe.nhg.nexthop = ng->nexthop; | |
3453 | else if (re->nhe_id > 0) | |
3454 | nhe.id = re->nhe_id; | |
3455 | ||
3456 | ret = rib_add_multipath_nhe(afi, safi, p, src_p, re, &nhe); | |
3457 | ||
3458 | /* In this path, the callers expect memory to be freed. */ | |
3459 | nexthop_group_delete(&ng); | |
3460 | ||
3461 | /* In error cases, free the route also */ | |
3462 | if (ret < 0) | |
3463 | XFREE(MTYPE_RE, re); | |
3464 | ||
3465 | return ret; | |
3466 | } | |
3467 | ||
d62a17ae | 3468 | void rib_delete(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 3469 | unsigned short instance, uint32_t flags, struct prefix *p, |
fd36be7e | 3470 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
bc541126 | 3471 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, |
3ceae22b | 3472 | uint8_t distance, bool fromkernel) |
d62a17ae | 3473 | { |
3474 | struct route_table *table; | |
3475 | struct route_node *rn; | |
3476 | struct route_entry *re; | |
3477 | struct route_entry *fib = NULL; | |
3478 | struct route_entry *same = NULL; | |
fd36be7e | 3479 | struct nexthop *rtnh; |
d62a17ae | 3480 | char buf2[INET6_ADDRSTRLEN]; |
5f7a4718 | 3481 | rib_dest_t *dest; |
d62a17ae | 3482 | |
1f610a1f | 3483 | assert(!src_p || !src_p->prefixlen || afi == AFI_IP6); |
d62a17ae | 3484 | |
3485 | /* Lookup table. */ | |
c7c0b007 SW |
3486 | table = zebra_vrf_lookup_table_with_table_id(afi, safi, vrf_id, |
3487 | table_id); | |
d62a17ae | 3488 | if (!table) |
3489 | return; | |
3490 | ||
3491 | /* Apply mask. */ | |
3492 | apply_mask(p); | |
3493 | if (src_p) | |
3494 | apply_mask_ipv6(src_p); | |
3495 | ||
3496 | /* Lookup route node. */ | |
3497 | rn = srcdest_rnode_lookup(table, p, src_p); | |
3498 | if (!rn) { | |
82d7d0e2 | 3499 | if (IS_ZEBRA_DEBUG_RIB) { |
82144f53 | 3500 | char src_buf[PREFIX_STRLEN]; |
82d7d0e2 DS |
3501 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
3502 | ||
82144f53 DS |
3503 | if (src_p && src_p->prefixlen) |
3504 | prefix2str(src_p, src_buf, sizeof(src_buf)); | |
3505 | else | |
3506 | src_buf[0] = '\0'; | |
3507 | ||
2dbe669b DA |
3508 | zlog_debug("%s[%d]:%pFX%s%s doesn't exist in rib", |
3509 | vrf->name, table_id, p, | |
d62a17ae | 3510 | (src_buf[0] != '\0') ? " from " : "", |
3511 | src_buf); | |
82d7d0e2 | 3512 | } |
d62a17ae | 3513 | return; |
3514 | } | |
718e3744 | 3515 | |
5f7a4718 DS |
3516 | dest = rib_dest_from_rnode(rn); |
3517 | fib = dest->selected_fib; | |
3518 | ||
d62a17ae | 3519 | /* Lookup same type route. */ |
a2addae8 | 3520 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 3521 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
3522 | continue; | |
3523 | ||
d62a17ae | 3524 | if (re->type != type) |
3525 | continue; | |
3526 | if (re->instance != instance) | |
3527 | continue; | |
40ecd8e4 DS |
3528 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && |
3529 | distance != re->distance) | |
3530 | continue; | |
3531 | ||
996c9314 | 3532 | if (re->type == ZEBRA_ROUTE_KERNEL && re->metric != metric) |
f19435a8 | 3533 | continue; |
0eb97b86 | 3534 | if (re->type == ZEBRA_ROUTE_CONNECT && |
c415d895 | 3535 | (rtnh = re->nhe->nhg.nexthop) |
fd36be7e DL |
3536 | && rtnh->type == NEXTHOP_TYPE_IFINDEX && nh) { |
3537 | if (rtnh->ifindex != nh->ifindex) | |
d62a17ae | 3538 | continue; |
d62a17ae | 3539 | same = re; |
3540 | break; | |
3541 | } | |
fec211ad | 3542 | |
d62a17ae | 3543 | /* Make sure that the route found has the same gateway. */ |
fec211ad | 3544 | if (nhe_id && re->nhe_id == nhe_id) { |
bc541126 SW |
3545 | same = re; |
3546 | break; | |
fec211ad SW |
3547 | } |
3548 | ||
3549 | if (nh == NULL) { | |
3550 | same = re; | |
3551 | break; | |
3552 | } | |
c415d895 | 3553 | for (ALL_NEXTHOPS(re->nhe->nhg, rtnh)) { |
fec211ad SW |
3554 | /* |
3555 | * No guarantee all kernel send nh with labels | |
3556 | * on delete. | |
3557 | */ | |
3558 | if (nexthop_same_no_labels(rtnh, nh)) { | |
d62a17ae | 3559 | same = re; |
3560 | break; | |
3561 | } | |
d62a17ae | 3562 | } |
fec211ad SW |
3563 | |
3564 | if (same) | |
3565 | break; | |
d62a17ae | 3566 | } |
3567 | /* If same type of route can't be found and this message is from | |
3568 | kernel. */ | |
3569 | if (!same) { | |
5dfeba19 DS |
3570 | /* |
3571 | * In the past(HA!) we could get here because | |
3572 | * we were receiving a route delete from the | |
3573 | * kernel and we're not marking the proto | |
3574 | * as coming from it's appropriate originator. | |
3575 | * Now that we are properly noticing the fact | |
3576 | * that the kernel has deleted our route we | |
3577 | * are not going to get called in this path | |
3578 | * I am going to leave this here because | |
3579 | * this might still work this way on non-linux | |
3580 | * platforms as well as some weird state I have | |
3581 | * not properly thought of yet. | |
3582 | * If we can show that this code path is | |
3583 | * dead then we can remove it. | |
3584 | */ | |
b8faa875 | 3585 | if (fib && CHECK_FLAG(flags, ZEBRA_FLAG_SELFROUTE)) { |
d62a17ae | 3586 | if (IS_ZEBRA_DEBUG_RIB) { |
2da33d6b DS |
3587 | rnode_debug(rn, vrf_id, |
3588 | "rn %p, re %p (%s) was deleted from kernel, adding", | |
3589 | rn, fib, | |
3590 | zebra_route_string(fib->type)); | |
d62a17ae | 3591 | } |
9271987f DS |
3592 | if (allow_delete |
3593 | || CHECK_FLAG(dest->flags, RIB_ROUTE_ANY_QUEUED)) { | |
677c1dd5 | 3594 | UNSET_FLAG(fib->status, ROUTE_ENTRY_INSTALLED); |
d62a17ae | 3595 | /* Unset flags. */ |
c415d895 | 3596 | for (rtnh = fib->nhe->nhg.nexthop; rtnh; |
fd36be7e DL |
3597 | rtnh = rtnh->next) |
3598 | UNSET_FLAG(rtnh->flags, | |
d62a17ae | 3599 | NEXTHOP_FLAG_FIB); |
3600 | ||
ed216282 DS |
3601 | /* |
3602 | * This is a non FRR route | |
3603 | * as such we should mark | |
3604 | * it as deleted | |
3605 | */ | |
5f7a4718 | 3606 | dest->selected_fib = NULL; |
d62a17ae | 3607 | } else { |
3608 | /* This means someone else, other than Zebra, | |
3609 | * has deleted | |
3610 | * a Zebra router from the kernel. We will add | |
3611 | * it back */ | |
3612 | rib_install_kernel(rn, fib, NULL); | |
3613 | } | |
3614 | } else { | |
3615 | if (IS_ZEBRA_DEBUG_RIB) { | |
fd36be7e | 3616 | if (nh) |
d62a17ae | 3617 | rnode_debug( |
3618 | rn, vrf_id, | |
3efd0893 | 3619 | "via %s ifindex %d type %d doesn't exist in rib", |
36228974 | 3620 | inet_ntop(afi2family(afi), |
3621 | &nh->gate, buf2, | |
3622 | sizeof(buf2)), | |
3623 | nh->ifindex, type); | |
d62a17ae | 3624 | else |
3625 | rnode_debug( | |
3626 | rn, vrf_id, | |
fd36be7e DL |
3627 | "type %d doesn't exist in rib", |
3628 | type); | |
d62a17ae | 3629 | } |
3630 | route_unlock_node(rn); | |
3631 | return; | |
3632 | } | |
3633 | } | |
718e3744 | 3634 | |
5dfeba19 | 3635 | if (same) { |
996c9314 LB |
3636 | if (fromkernel && CHECK_FLAG(flags, ZEBRA_FLAG_SELFROUTE) |
3637 | && !allow_delete) { | |
5dfeba19 DS |
3638 | rib_install_kernel(rn, same, NULL); |
3639 | route_unlock_node(rn); | |
3640 | ||
3641 | return; | |
3642 | } | |
6134fd82 | 3643 | |
2b83602b | 3644 | /* Special handling for IPv4 or IPv6 routes sourced from |
3645 | * EVPN - the nexthop (and associated MAC) need to be | |
3646 | * uninstalled if no more refs. | |
3647 | */ | |
90264d64 | 3648 | if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) { |
6134fd82 | 3649 | struct nexthop *tmp_nh; |
3650 | ||
c415d895 | 3651 | for (ALL_NEXTHOPS(re->nhe->nhg, tmp_nh)) { |
6134fd82 | 3652 | struct ipaddr vtep_ip; |
3653 | ||
3654 | memset(&vtep_ip, 0, sizeof(struct ipaddr)); | |
1ec31309 | 3655 | if (afi == AFI_IP) { |
3656 | vtep_ip.ipa_type = IPADDR_V4; | |
3657 | memcpy(&(vtep_ip.ipaddr_v4), | |
3658 | &(tmp_nh->gate.ipv4), | |
3659 | sizeof(struct in_addr)); | |
3660 | } else { | |
3661 | vtep_ip.ipa_type = IPADDR_V6; | |
3662 | memcpy(&(vtep_ip.ipaddr_v6), | |
3663 | &(tmp_nh->gate.ipv6), | |
3664 | sizeof(struct in6_addr)); | |
3665 | } | |
32367e7a | 3666 | zebra_rib_queue_evpn_route_del(re->vrf_id, |
6134fd82 | 3667 | &vtep_ip, p); |
3668 | } | |
3669 | } | |
cf363e1b MS |
3670 | |
3671 | /* Notify dplane if system route changes */ | |
3672 | if (RIB_SYSTEM_ROUTE(re)) | |
3673 | dplane_sys_route_del(rn, same); | |
3674 | ||
d62a17ae | 3675 | rib_delnode(rn, same); |
5dfeba19 | 3676 | } |
05737783 | 3677 | |
d62a17ae | 3678 | route_unlock_node(rn); |
3679 | return; | |
3680 | } | |
718e3744 | 3681 | |
718e3744 | 3682 | |
d7c0a89a | 3683 | int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 3684 | unsigned short instance, uint32_t flags, struct prefix *p, |
d7c0a89a | 3685 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
8032b717 SW |
3686 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, uint32_t mtu, |
3687 | uint8_t distance, route_tag_t tag) | |
d62a17ae | 3688 | { |
bbb322f2 SW |
3689 | struct route_entry *re = NULL; |
3690 | struct nexthop *nexthop = NULL; | |
0eb97b86 | 3691 | struct nexthop_group *ng = NULL; |
718e3744 | 3692 | |
66af6845 | 3693 | /* Allocate new route_entry structure. */ |
d62a17ae | 3694 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); |
d62a17ae | 3695 | re->type = type; |
3696 | re->instance = instance; | |
3697 | re->distance = distance; | |
3698 | re->flags = flags; | |
3699 | re->metric = metric; | |
3700 | re->mtu = mtu; | |
3701 | re->table = table_id; | |
3702 | re->vrf_id = vrf_id; | |
98572489 | 3703 | re->uptime = monotime(NULL); |
4e40b6d6 | 3704 | re->tag = tag; |
bbb322f2 SW |
3705 | re->nhe_id = nhe_id; |
3706 | ||
0eb97b86 MS |
3707 | /* If the owner of the route supplies a shared nexthop-group id, |
3708 | * we'll use that. Otherwise, pass the nexthop along directly. | |
3709 | */ | |
e22e8001 | 3710 | if (!nhe_id) { |
0eb97b86 | 3711 | ng = nexthop_group_new(); |
d62a17ae | 3712 | |
e22e8001 SW |
3713 | /* Add nexthop. */ |
3714 | nexthop = nexthop_new(); | |
3715 | *nexthop = *nh; | |
0eb97b86 | 3716 | nexthop_group_add_sorted(ng, nexthop); |
e22e8001 | 3717 | } |
718e3744 | 3718 | |
0eb97b86 | 3719 | return rib_add_multipath(afi, safi, p, src_p, re, ng); |
718e3744 | 3720 | } |
3721 | ||
91e6f25b | 3722 | static const char *rib_update_event2str(enum rib_update_event event) |
2a99ab95 SW |
3723 | { |
3724 | const char *ret = "UNKNOWN"; | |
3725 | ||
3726 | switch (event) { | |
3727 | case RIB_UPDATE_KERNEL: | |
3728 | ret = "RIB_UPDATE_KERNEL"; | |
3729 | break; | |
3730 | case RIB_UPDATE_RMAP_CHANGE: | |
3731 | ret = "RIB_UPDATE_RMAP_CHANGE"; | |
3732 | break; | |
3733 | case RIB_UPDATE_OTHER: | |
3734 | ret = "RIB_UPDATE_OTHER"; | |
3735 | break; | |
3736 | case RIB_UPDATE_MAX: | |
3737 | break; | |
3738 | } | |
3739 | ||
3740 | return ret; | |
3741 | } | |
3742 | ||
3743 | ||
3744 | /* Schedule route nodes to be processed if they match the type */ | |
3745 | static void rib_update_route_node(struct route_node *rn, int type) | |
3746 | { | |
3747 | struct route_entry *re, *next; | |
3748 | bool re_changed = false; | |
3749 | ||
3750 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
3751 | if (type == ZEBRA_ROUTE_ALL || type == re->type) { | |
3752 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3753 | re_changed = true; | |
3754 | } | |
3755 | } | |
3756 | ||
3757 | if (re_changed) | |
3758 | rib_queue_add(rn); | |
3759 | } | |
3760 | ||
1c848137 | 3761 | /* Schedule routes of a particular table (address-family) based on event. */ |
54aeba35 DS |
3762 | void rib_update_table(struct route_table *table, enum rib_update_event event, |
3763 | int rtype) | |
d62a17ae | 3764 | { |
3765 | struct route_node *rn; | |
2a99ab95 SW |
3766 | |
3767 | if (IS_ZEBRA_DEBUG_EVENT) { | |
3768 | struct zebra_vrf *zvrf; | |
3769 | struct vrf *vrf; | |
3770 | ||
630d5962 DS |
3771 | zvrf = table->info |
3772 | ? ((struct rib_table_info *)table->info)->zvrf | |
3773 | : NULL; | |
2a99ab95 SW |
3774 | vrf = zvrf ? zvrf->vrf : NULL; |
3775 | ||
54aeba35 | 3776 | zlog_debug("%s: %s VRF %s Table %u event %s Route type: %s", __func__, |
2a99ab95 | 3777 | table->info ? afi2str( |
630d5962 | 3778 | ((struct rib_table_info *)table->info)->afi) |
2a99ab95 | 3779 | : "Unknown", |
bd47f3a3 | 3780 | VRF_LOGNAME(vrf), zvrf ? zvrf->table_id : 0, |
54aeba35 | 3781 | rib_update_event2str(event), zebra_route_string(rtype)); |
2a99ab95 | 3782 | } |
d62a17ae | 3783 | |
3784 | /* Walk all routes and queue for processing, if appropriate for | |
3785 | * the trigger event. | |
3786 | */ | |
3787 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { | |
1ca60f2c DS |
3788 | /* |
3789 | * If we are looking at a route node and the node | |
3790 | * has already been queued we don't | |
3791 | * need to queue it up again | |
3792 | */ | |
2a99ab95 SW |
3793 | if (rn->info |
3794 | && CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
3795 | RIB_ROUTE_ANY_QUEUED)) | |
1ca60f2c | 3796 | continue; |
2a99ab95 | 3797 | |
d62a17ae | 3798 | switch (event) { |
2a99ab95 SW |
3799 | case RIB_UPDATE_KERNEL: |
3800 | rib_update_route_node(rn, ZEBRA_ROUTE_KERNEL); | |
3801 | break; | |
d62a17ae | 3802 | case RIB_UPDATE_RMAP_CHANGE: |
3803 | case RIB_UPDATE_OTHER: | |
54aeba35 | 3804 | rib_update_route_node(rn, rtype); |
d62a17ae | 3805 | break; |
d62a17ae | 3806 | default: |
3807 | break; | |
3808 | } | |
3809 | } | |
b84c7253 | 3810 | } |
3811 | ||
54aeba35 DS |
3812 | static void rib_update_handle_vrf(vrf_id_t vrf_id, enum rib_update_event event, |
3813 | int rtype) | |
718e3744 | 3814 | { |
d62a17ae | 3815 | struct route_table *table; |
1c848137 | 3816 | |
2a99ab95 SW |
3817 | if (IS_ZEBRA_DEBUG_EVENT) |
3818 | zlog_debug("%s: Handling VRF %s event %s", __func__, | |
3819 | vrf_id_to_name(vrf_id), rib_update_event2str(event)); | |
3820 | ||
d62a17ae | 3821 | /* Process routes of interested address-families. */ |
3822 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
2a99ab95 | 3823 | if (table) |
54aeba35 | 3824 | rib_update_table(table, event, rtype); |
718e3744 | 3825 | |
d62a17ae | 3826 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, vrf_id); |
2a99ab95 | 3827 | if (table) |
54aeba35 | 3828 | rib_update_table(table, event, rtype); |
2a99ab95 SW |
3829 | } |
3830 | ||
54aeba35 | 3831 | static void rib_update_handle_vrf_all(enum rib_update_event event, int rtype) |
2a99ab95 SW |
3832 | { |
3833 | struct zebra_router_table *zrt; | |
3834 | ||
3835 | if (IS_ZEBRA_DEBUG_EVENT) | |
3836 | zlog_debug("%s: Handling VRF (ALL) event %s", __func__, | |
3837 | rib_update_event2str(event)); | |
3838 | ||
3839 | /* Just iterate over all the route tables, rather than vrf lookups */ | |
3840 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) | |
54aeba35 | 3841 | rib_update_table(zrt->table, event, rtype); |
2a99ab95 SW |
3842 | } |
3843 | ||
3844 | struct rib_update_ctx { | |
91e6f25b | 3845 | enum rib_update_event event; |
2a99ab95 SW |
3846 | bool vrf_all; |
3847 | vrf_id_t vrf_id; | |
3848 | }; | |
3849 | ||
3850 | static struct rib_update_ctx *rib_update_ctx_init(vrf_id_t vrf_id, | |
91e6f25b | 3851 | enum rib_update_event event) |
2a99ab95 SW |
3852 | { |
3853 | struct rib_update_ctx *ctx; | |
3854 | ||
3855 | ctx = XCALLOC(MTYPE_RIB_UPDATE_CTX, sizeof(struct rib_update_ctx)); | |
3856 | ||
3857 | ctx->event = event; | |
3858 | ctx->vrf_id = vrf_id; | |
3859 | ||
3860 | return ctx; | |
3861 | } | |
3862 | ||
3863 | static void rib_update_ctx_fini(struct rib_update_ctx **ctx) | |
3864 | { | |
3865 | XFREE(MTYPE_RIB_UPDATE_CTX, *ctx); | |
2a99ab95 SW |
3866 | } |
3867 | ||
3868 | static int rib_update_handler(struct thread *thread) | |
3869 | { | |
3870 | struct rib_update_ctx *ctx; | |
3871 | ||
3872 | ctx = THREAD_ARG(thread); | |
3873 | ||
3874 | if (ctx->vrf_all) | |
54aeba35 | 3875 | rib_update_handle_vrf_all(ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 | 3876 | else |
54aeba35 | 3877 | rib_update_handle_vrf(ctx->vrf_id, ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 SW |
3878 | |
3879 | rib_update_ctx_fini(&ctx); | |
3880 | ||
3881 | return 0; | |
3882 | } | |
3883 | ||
3884 | /* | |
3885 | * Thread list to ensure we don't schedule a ton of events | |
3886 | * if interfaces are flapping for instance. | |
3887 | */ | |
3888 | static struct thread *t_rib_update_threads[RIB_UPDATE_MAX]; | |
3889 | ||
2a99ab95 | 3890 | /* Schedule a RIB update event for all vrfs */ |
91e6f25b | 3891 | void rib_update(enum rib_update_event event) |
2a99ab95 SW |
3892 | { |
3893 | struct rib_update_ctx *ctx; | |
3894 | ||
e13f12a7 DS |
3895 | if (thread_is_scheduled(t_rib_update_threads[event])) |
3896 | return; | |
2a99ab95 | 3897 | |
e13f12a7 | 3898 | ctx = rib_update_ctx_init(0, event); |
2a99ab95 SW |
3899 | ctx->vrf_all = true; |
3900 | ||
e13f12a7 DS |
3901 | thread_add_event(zrouter.master, rib_update_handler, ctx, 0, |
3902 | &t_rib_update_threads[event]); | |
3903 | ||
3904 | if (IS_ZEBRA_DEBUG_EVENT) | |
05267678 | 3905 | zlog_debug("%s: Scheduled VRF (ALL), event %s", __func__, |
2a99ab95 | 3906 | rib_update_event2str(event)); |
718e3744 | 3907 | } |
3908 | ||
718e3744 | 3909 | /* Delete self installed routes after zebra is relaunched. */ |
95a29032 | 3910 | void rib_sweep_table(struct route_table *table) |
d62a17ae | 3911 | { |
3912 | struct route_node *rn; | |
3913 | struct route_entry *re; | |
3914 | struct route_entry *next; | |
915902cb | 3915 | struct nexthop *nexthop; |
d62a17ae | 3916 | |
915902cb DS |
3917 | if (!table) |
3918 | return; | |
d62a17ae | 3919 | |
6d81b590 MS |
3920 | if (IS_ZEBRA_DEBUG_RIB) |
3921 | zlog_debug("%s: starting", __func__); | |
3922 | ||
915902cb | 3923 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
a2addae8 | 3924 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d4644d41 | 3925 | |
915902cb DS |
3926 | if (IS_ZEBRA_DEBUG_RIB) |
3927 | route_entry_dump(&rn->p, NULL, re); | |
3928 | ||
3929 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
3930 | continue; | |
3931 | ||
3932 | if (!CHECK_FLAG(re->flags, ZEBRA_FLAG_SELFROUTE)) | |
3933 | continue; | |
3934 | ||
d4644d41 DS |
3935 | /* |
3936 | * If routes are older than startup_time then | |
3937 | * we know we read them in from the kernel. | |
3938 | * As such we can safely remove them. | |
3939 | */ | |
3940 | if (zrouter.startup_time < re->uptime) | |
3941 | continue; | |
3942 | ||
915902cb DS |
3943 | /* |
3944 | * So we are starting up and have received | |
3945 | * routes from the kernel that we have installed | |
3946 | * from a previous run of zebra but not cleaned | |
3947 | * up ( say a kill -9 ) | |
3948 | * But since we haven't actually installed | |
3949 | * them yet( we received them from the kernel ) | |
3950 | * we don't think they are active. | |
3951 | * So let's pretend they are active to actually | |
3952 | * remove them. | |
3953 | * In all honesty I'm not sure if we should | |
3954 | * mark them as active when we receive them | |
3955 | * This is startup only so probably ok. | |
3956 | * | |
3957 | * If we ever decide to move rib_sweep_table | |
3958 | * to a different spot (ie startup ) | |
3959 | * this decision needs to be revisited | |
3960 | */ | |
677c1dd5 | 3961 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 3962 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
915902cb DS |
3963 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
3964 | ||
0c555cc6 DS |
3965 | rib_uninstall_kernel(rn, re); |
3966 | rib_delnode(rn, re); | |
915902cb DS |
3967 | } |
3968 | } | |
6d81b590 MS |
3969 | |
3970 | if (IS_ZEBRA_DEBUG_RIB) | |
3971 | zlog_debug("%s: ends", __func__); | |
718e3744 | 3972 | } |
3973 | ||
3974 | /* Sweep all RIB tables. */ | |
d4644d41 | 3975 | int rib_sweep_route(struct thread *t) |
718e3744 | 3976 | { |
d62a17ae | 3977 | struct vrf *vrf; |
3978 | struct zebra_vrf *zvrf; | |
78104b9b | 3979 | |
a2addae8 | 3980 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
915902cb DS |
3981 | if ((zvrf = vrf->info) == NULL) |
3982 | continue; | |
3983 | ||
d62a17ae | 3984 | rib_sweep_table(zvrf->table[AFI_IP][SAFI_UNICAST]); |
3985 | rib_sweep_table(zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
3986 | } | |
95a29032 | 3987 | |
89272910 | 3988 | zebra_router_sweep_route(); |
38e40db1 | 3989 | zebra_router_sweep_nhgs(); |
d4644d41 DS |
3990 | |
3991 | return 0; | |
718e3744 | 3992 | } |
2ea1ab1c VT |
3993 | |
3994 | /* Remove specific by protocol routes from 'table'. */ | |
d7c0a89a | 3995 | unsigned long rib_score_proto_table(uint8_t proto, unsigned short instance, |
47a08aa9 | 3996 | struct route_table *table) |
d62a17ae | 3997 | { |
3998 | struct route_node *rn; | |
3999 | struct route_entry *re; | |
4000 | struct route_entry *next; | |
4001 | unsigned long n = 0; | |
4002 | ||
4003 | if (table) | |
4004 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) | |
a2addae8 | 4005 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 4006 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
4007 | continue; | |
4008 | if (re->type == proto | |
4009 | && re->instance == instance) { | |
4010 | rib_delnode(rn, re); | |
4011 | n++; | |
4012 | } | |
4013 | } | |
4014 | return n; | |
2ea1ab1c VT |
4015 | } |
4016 | ||
4017 | /* Remove specific by protocol routes. */ | |
d7c0a89a | 4018 | unsigned long rib_score_proto(uint8_t proto, unsigned short instance) |
2ea1ab1c | 4019 | { |
d62a17ae | 4020 | struct vrf *vrf; |
4021 | struct zebra_vrf *zvrf; | |
d8612e65 | 4022 | struct other_route_table *ort; |
d62a17ae | 4023 | unsigned long cnt = 0; |
78104b9b | 4024 | |
d8612e65 DS |
4025 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
4026 | zvrf = vrf->info; | |
4027 | if (!zvrf) | |
4028 | continue; | |
78104b9b | 4029 | |
d8612e65 DS |
4030 | cnt += rib_score_proto_table(proto, instance, |
4031 | zvrf->table[AFI_IP][SAFI_UNICAST]) | |
4032 | + rib_score_proto_table( | |
4033 | proto, instance, | |
4034 | zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4035 | ||
81fddbe7 | 4036 | frr_each(otable, &zvrf->other_tables, ort) cnt += |
d8612e65 DS |
4037 | rib_score_proto_table(proto, instance, ort->table); |
4038 | } | |
47a08aa9 | 4039 | |
d62a17ae | 4040 | return cnt; |
2ea1ab1c VT |
4041 | } |
4042 | ||
718e3744 | 4043 | /* Close RIB and clean up kernel routes. */ |
d62a17ae | 4044 | void rib_close_table(struct route_table *table) |
718e3744 | 4045 | { |
d62a17ae | 4046 | struct route_node *rn; |
630d5962 | 4047 | struct rib_table_info *info; |
5f7a4718 | 4048 | rib_dest_t *dest; |
718e3744 | 4049 | |
1e9f448f DS |
4050 | if (!table) |
4051 | return; | |
9fd92e3c | 4052 | |
6ca30e9e | 4053 | info = route_table_get_info(table); |
5adc2528 | 4054 | |
5f7a4718 DS |
4055 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
4056 | dest = rib_dest_from_rnode(rn); | |
1e9f448f | 4057 | |
5f7a4718 | 4058 | if (dest && dest->selected_fib) { |
1e9f448f DS |
4059 | if (info->safi == SAFI_UNICAST) |
4060 | hook_call(rib_update, rn, NULL); | |
4061 | ||
3cdba47a DS |
4062 | rib_uninstall_kernel(rn, dest->selected_fib); |
4063 | dest->selected_fib = NULL; | |
1e9f448f | 4064 | } |
5f7a4718 | 4065 | } |
718e3744 | 4066 | } |
4067 | ||
9bd9717b MS |
4068 | /* |
4069 | * Handler for async dataplane results after a pseudowire installation | |
4070 | */ | |
4071 | static int handle_pw_result(struct zebra_dplane_ctx *ctx) | |
4072 | { | |
9bd9717b MS |
4073 | struct zebra_pw *pw; |
4074 | struct zebra_vrf *vrf; | |
4075 | ||
4076 | /* The pseudowire code assumes success - we act on an error | |
4077 | * result for installation attempts here. | |
4078 | */ | |
4079 | if (dplane_ctx_get_op(ctx) != DPLANE_OP_PW_INSTALL) | |
4080 | goto done; | |
4081 | ||
4082 | if (dplane_ctx_get_status(ctx) != ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
4083 | vrf = zebra_vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); | |
7c7ef4a8 | 4084 | pw = zebra_pw_find(vrf, dplane_ctx_get_ifname(ctx)); |
9bd9717b | 4085 | if (pw) |
fd563cc7 KS |
4086 | zebra_pw_install_failure(pw, |
4087 | dplane_ctx_get_pw_status(ctx)); | |
9bd9717b MS |
4088 | } |
4089 | ||
4090 | done: | |
a20e6c32 | 4091 | dplane_ctx_fini(&ctx); |
9bd9717b | 4092 | |
9f2d0354 | 4093 | return 0; |
9bd9717b MS |
4094 | } |
4095 | ||
4096 | ||
7cdb1a84 | 4097 | /* |
d37f4d6c MS |
4098 | * Handle results from the dataplane system. Dequeue update context |
4099 | * structs, dispatch to appropriate internal handlers. | |
7cdb1a84 MS |
4100 | */ |
4101 | static int rib_process_dplane_results(struct thread *thread) | |
4102 | { | |
25779064 | 4103 | struct zebra_dplane_ctx *ctx; |
4c206c8f | 4104 | struct dplane_ctx_q ctxlist; |
2fc69f03 | 4105 | bool shut_p = false; |
4c206c8f MS |
4106 | |
4107 | /* Dequeue a list of completed updates with one lock/unlock cycle */ | |
7cdb1a84 MS |
4108 | |
4109 | do { | |
4c206c8f MS |
4110 | TAILQ_INIT(&ctxlist); |
4111 | ||
7cdb1a84 | 4112 | /* Take lock controlling queue of results */ |
00dffa8c | 4113 | frr_with_mutex(&dplane_mutex) { |
d37f4d6c | 4114 | /* Dequeue list of context structs */ |
4c206c8f | 4115 | dplane_ctx_list_append(&ctxlist, &rib_dplane_q); |
7cdb1a84 | 4116 | } |
7cdb1a84 | 4117 | |
4c206c8f MS |
4118 | /* Dequeue context block */ |
4119 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4120 | ||
4121 | /* If we've emptied the results queue, we're done */ | |
4122 | if (ctx == NULL) | |
7cdb1a84 | 4123 | break; |
7cdb1a84 | 4124 | |
2fc69f03 MS |
4125 | /* If zebra is shutting down, avoid processing results, |
4126 | * just drain the results queue. | |
4127 | */ | |
4128 | shut_p = atomic_load_explicit(&zrouter.in_shutdown, | |
4129 | memory_order_relaxed); | |
4130 | if (shut_p) { | |
4131 | while (ctx) { | |
4132 | dplane_ctx_fini(&ctx); | |
4133 | ||
4134 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4135 | } | |
4136 | ||
4137 | continue; | |
4138 | } | |
4139 | ||
1247efcc DL |
4140 | #ifdef HAVE_SCRIPTING |
4141 | char *script_name = frrscript_names_get_script_name( | |
4142 | ZEBRA_ON_RIB_PROCESS_HOOK_CALL); | |
4143 | ||
4144 | int ret = 1; | |
4145 | struct frrscript *fs; | |
4146 | ||
4147 | if (script_name) { | |
4148 | fs = frrscript_new(script_name); | |
4149 | if (fs) | |
4150 | ret = frrscript_load( | |
4151 | fs, ZEBRA_ON_RIB_PROCESS_HOOK_CALL, | |
4152 | NULL); | |
4153 | } | |
4154 | #endif /* HAVE_SCRIPTING */ | |
4155 | ||
4c206c8f | 4156 | while (ctx) { |
1247efcc DL |
4157 | |
4158 | #ifdef HAVE_SCRIPTING | |
4159 | if (ret == 0) | |
4160 | frrscript_call(fs, | |
4161 | ZEBRA_ON_RIB_PROCESS_HOOK_CALL, | |
4162 | ("ctx", ctx)); | |
4163 | #endif /* HAVE_SCRIPTING */ | |
4164 | ||
d37f4d6c MS |
4165 | switch (dplane_ctx_get_op(ctx)) { |
4166 | case DPLANE_OP_ROUTE_INSTALL: | |
4167 | case DPLANE_OP_ROUTE_UPDATE: | |
4168 | case DPLANE_OP_ROUTE_DELETE: | |
188a00e0 MS |
4169 | { |
4170 | /* Bit of special case for route updates | |
4171 | * that were generated by async notifications: | |
4172 | * we don't want to continue processing these | |
4173 | * in the rib. | |
4174 | */ | |
4175 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4176 | rib_process_result(ctx); | |
4177 | else | |
4178 | dplane_ctx_fini(&ctx); | |
4179 | } | |
4180 | break; | |
d37f4d6c | 4181 | |
54818e3b MS |
4182 | case DPLANE_OP_ROUTE_NOTIFY: |
4183 | rib_process_dplane_notify(ctx); | |
d37f4d6c MS |
4184 | break; |
4185 | ||
9865e1c3 SW |
4186 | case DPLANE_OP_NH_INSTALL: |
4187 | case DPLANE_OP_NH_UPDATE: | |
4188 | case DPLANE_OP_NH_DELETE: | |
4189 | zebra_nhg_dplane_result(ctx); | |
4190 | break; | |
4191 | ||
d37f4d6c MS |
4192 | case DPLANE_OP_LSP_INSTALL: |
4193 | case DPLANE_OP_LSP_UPDATE: | |
4194 | case DPLANE_OP_LSP_DELETE: | |
188a00e0 MS |
4195 | { |
4196 | /* Bit of special case for LSP updates | |
4197 | * that were generated by async notifications: | |
4198 | * we don't want to continue processing these. | |
4199 | */ | |
4200 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4201 | zebra_mpls_lsp_dplane_result(ctx); | |
4202 | else | |
4203 | dplane_ctx_fini(&ctx); | |
4204 | } | |
4205 | break; | |
d37f4d6c | 4206 | |
104e3ad9 MS |
4207 | case DPLANE_OP_LSP_NOTIFY: |
4208 | zebra_mpls_process_dplane_notify(ctx); | |
d37f4d6c MS |
4209 | break; |
4210 | ||
9bd9717b MS |
4211 | case DPLANE_OP_PW_INSTALL: |
4212 | case DPLANE_OP_PW_UNINSTALL: | |
4213 | handle_pw_result(ctx); | |
4214 | break; | |
4215 | ||
cf363e1b MS |
4216 | case DPLANE_OP_SYS_ROUTE_ADD: |
4217 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
4218 | /* No further processing in zebra for these. */ | |
4219 | dplane_ctx_fini(&ctx); | |
4220 | break; | |
4221 | ||
036d93c0 MS |
4222 | case DPLANE_OP_MAC_INSTALL: |
4223 | case DPLANE_OP_MAC_DELETE: | |
4224 | zebra_vxlan_handle_result(ctx); | |
4225 | break; | |
4226 | ||
f62e5480 JU |
4227 | case DPLANE_OP_RULE_ADD: |
4228 | case DPLANE_OP_RULE_DELETE: | |
4229 | case DPLANE_OP_RULE_UPDATE: | |
5162e000 PG |
4230 | case DPLANE_OP_IPTABLE_ADD: |
4231 | case DPLANE_OP_IPTABLE_DELETE: | |
ef524230 PG |
4232 | case DPLANE_OP_IPSET_ADD: |
4233 | case DPLANE_OP_IPSET_DELETE: | |
4234 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
4235 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
f62e5480 JU |
4236 | zebra_pbr_dplane_result(ctx); |
4237 | break; | |
4238 | ||
d166308b MS |
4239 | case DPLANE_OP_INTF_ADDR_ADD: |
4240 | case DPLANE_OP_INTF_ADDR_DEL: | |
4241 | zebra_if_addr_update_ctx(ctx); | |
4242 | break; | |
4243 | ||
931fa60c MS |
4244 | /* Some op codes not handled here */ |
4245 | case DPLANE_OP_ADDR_INSTALL: | |
4246 | case DPLANE_OP_ADDR_UNINSTALL: | |
4247 | case DPLANE_OP_NEIGH_INSTALL: | |
4248 | case DPLANE_OP_NEIGH_UPDATE: | |
4249 | case DPLANE_OP_NEIGH_DELETE: | |
0a27a2fe PG |
4250 | case DPLANE_OP_NEIGH_IP_INSTALL: |
4251 | case DPLANE_OP_NEIGH_IP_DELETE: | |
0bbd4ff4 MS |
4252 | case DPLANE_OP_VTEP_ADD: |
4253 | case DPLANE_OP_VTEP_DELETE: | |
d68e74b4 | 4254 | case DPLANE_OP_NEIGH_DISCOVER: |
c60522f7 | 4255 | case DPLANE_OP_BR_PORT_UPDATE: |
e18747a9 | 4256 | case DPLANE_OP_NEIGH_TABLE_UPDATE: |
62b4b7e4 | 4257 | case DPLANE_OP_GRE_SET: |
931fa60c | 4258 | case DPLANE_OP_NONE: |
d37f4d6c MS |
4259 | /* Don't expect this: just return the struct? */ |
4260 | dplane_ctx_fini(&ctx); | |
4261 | break; | |
931fa60c | 4262 | |
d37f4d6c | 4263 | } /* Dispatch by op code */ |
4c206c8f MS |
4264 | |
4265 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4266 | } | |
4267 | ||
5709131c | 4268 | } while (1); |
7cdb1a84 | 4269 | |
5709131c | 4270 | return 0; |
7cdb1a84 MS |
4271 | } |
4272 | ||
4273 | /* | |
4274 | * Results are returned from the dataplane subsystem, in the context of | |
1bcea841 | 4275 | * the dataplane pthread. We enqueue the results here for processing by |
7cdb1a84 MS |
4276 | * the main thread later. |
4277 | */ | |
4c206c8f | 4278 | static int rib_dplane_results(struct dplane_ctx_q *ctxlist) |
7cdb1a84 MS |
4279 | { |
4280 | /* Take lock controlling queue of results */ | |
00dffa8c | 4281 | frr_with_mutex(&dplane_mutex) { |
4c206c8f MS |
4282 | /* Enqueue context blocks */ |
4283 | dplane_ctx_list_append(&rib_dplane_q, ctxlist); | |
7cdb1a84 | 4284 | } |
7cdb1a84 | 4285 | |
4c206c8f | 4286 | /* Ensure event is signalled to zebra main pthread */ |
3801e764 | 4287 | thread_add_event(zrouter.master, rib_process_dplane_results, NULL, 0, |
7cdb1a84 MS |
4288 | &t_dplane); |
4289 | ||
5709131c | 4290 | return 0; |
7cdb1a84 MS |
4291 | } |
4292 | ||
eaa2716d SW |
4293 | /* |
4294 | * Ensure there are no empty slots in the route_info array. | |
4295 | * Every route type in zebra should be present there. | |
4296 | */ | |
4297 | static void check_route_info(void) | |
4298 | { | |
4299 | int len = array_size(route_info); | |
4300 | ||
4301 | /* | |
4302 | * ZEBRA_ROUTE_SYSTEM is special cased since | |
4303 | * its key is 0 anyway. | |
4304 | * | |
4305 | * ZEBRA_ROUTE_ALL is also ignored. | |
4306 | */ | |
4307 | for (int i = 0; i < len; i++) { | |
4308 | if (i == ZEBRA_ROUTE_SYSTEM || i == ZEBRA_ROUTE_ALL) | |
4309 | continue; | |
4310 | assert(route_info[i].key); | |
8dc7a759 | 4311 | assert(route_info[i].meta_q_map < MQ_SIZE); |
eaa2716d SW |
4312 | } |
4313 | } | |
4314 | ||
718e3744 | 4315 | /* Routing information base initialize. */ |
d62a17ae | 4316 | void rib_init(void) |
718e3744 | 4317 | { |
eaa2716d SW |
4318 | check_route_info(); |
4319 | ||
2561d12e | 4320 | rib_queue_init(); |
7cdb1a84 MS |
4321 | |
4322 | /* Init dataplane, and register for results */ | |
4323 | pthread_mutex_init(&dplane_mutex, NULL); | |
4324 | TAILQ_INIT(&rib_dplane_q); | |
4c206c8f | 4325 | zebra_dplane_init(rib_dplane_results); |
718e3744 | 4326 | } |
0915bb0c AS |
4327 | |
4328 | /* | |
4329 | * vrf_id_get_next | |
4330 | * | |
4331 | * Get the first vrf id that is greater than the given vrf id if any. | |
4332 | * | |
2951a7a4 | 4333 | * Returns true if a vrf id was found, false otherwise. |
0915bb0c | 4334 | */ |
d62a17ae | 4335 | static inline int vrf_id_get_next(vrf_id_t vrf_id, vrf_id_t *next_id_p) |
0915bb0c | 4336 | { |
d62a17ae | 4337 | struct vrf *vrf; |
b72ede27 | 4338 | |
d62a17ae | 4339 | vrf = vrf_lookup_by_id(vrf_id); |
4340 | if (vrf) { | |
4341 | vrf = RB_NEXT(vrf_id_head, vrf); | |
4342 | if (vrf) { | |
4343 | *next_id_p = vrf->vrf_id; | |
4344 | return 1; | |
4345 | } | |
4346 | } | |
0915bb0c | 4347 | |
d62a17ae | 4348 | return 0; |
0915bb0c AS |
4349 | } |
4350 | ||
4351 | /* | |
4352 | * rib_tables_iter_next | |
4353 | * | |
4354 | * Returns the next table in the iteration. | |
4355 | */ | |
d62a17ae | 4356 | struct route_table *rib_tables_iter_next(rib_tables_iter_t *iter) |
4357 | { | |
4358 | struct route_table *table; | |
4359 | ||
4360 | /* | |
4361 | * Array that helps us go over all AFI/SAFI combinations via one | |
4362 | * index. | |
4363 | */ | |
2b64873d | 4364 | static const struct { |
d62a17ae | 4365 | afi_t afi; |
4366 | safi_t safi; | |
4367 | } afi_safis[] = { | |
4368 | {AFI_IP, SAFI_UNICAST}, {AFI_IP, SAFI_MULTICAST}, | |
4369 | {AFI_IP, SAFI_LABELED_UNICAST}, {AFI_IP6, SAFI_UNICAST}, | |
4370 | {AFI_IP6, SAFI_MULTICAST}, {AFI_IP6, SAFI_LABELED_UNICAST}, | |
4371 | }; | |
4372 | ||
4373 | table = NULL; | |
4374 | ||
4375 | switch (iter->state) { | |
4376 | ||
4377 | case RIB_TABLES_ITER_S_INIT: | |
4378 | iter->vrf_id = VRF_DEFAULT; | |
4379 | iter->afi_safi_ix = -1; | |
4380 | ||
4381 | /* Fall through */ | |
4382 | ||
4383 | case RIB_TABLES_ITER_S_ITERATING: | |
4384 | iter->afi_safi_ix++; | |
4385 | while (1) { | |
4386 | ||
4387 | while (iter->afi_safi_ix | |
7e3a1ec7 | 4388 | < (int)array_size(afi_safis)) { |
d62a17ae | 4389 | table = zebra_vrf_table( |
4390 | afi_safis[iter->afi_safi_ix].afi, | |
4391 | afi_safis[iter->afi_safi_ix].safi, | |
4392 | iter->vrf_id); | |
4393 | if (table) | |
4394 | break; | |
4395 | ||
4396 | iter->afi_safi_ix++; | |
4397 | } | |
4398 | ||
4399 | /* | |
4400 | * Found another table in this vrf. | |
4401 | */ | |
4402 | if (table) | |
4403 | break; | |
4404 | ||
4405 | /* | |
4406 | * Done with all tables in the current vrf, go to the | |
4407 | * next | |
4408 | * one. | |
4409 | */ | |
4410 | if (!vrf_id_get_next(iter->vrf_id, &iter->vrf_id)) | |
4411 | break; | |
4412 | ||
4413 | iter->afi_safi_ix = 0; | |
4414 | } | |
0915bb0c | 4415 | |
0915bb0c AS |
4416 | break; |
4417 | ||
d62a17ae | 4418 | case RIB_TABLES_ITER_S_DONE: |
4419 | return NULL; | |
0915bb0c AS |
4420 | } |
4421 | ||
d62a17ae | 4422 | if (table) |
4423 | iter->state = RIB_TABLES_ITER_S_ITERATING; | |
4424 | else | |
4425 | iter->state = RIB_TABLES_ITER_S_DONE; | |
0915bb0c | 4426 | |
d62a17ae | 4427 | return table; |
0915bb0c | 4428 | } |