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Commit | Line | Data |
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718e3744 | 1 | /* Routing Information Base. |
2 | * Copyright (C) 1997, 98, 99, 2001 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
718e3744 | 23 | #include "command.h" |
43e52561 QY |
24 | #include "if.h" |
25 | #include "linklist.h" | |
718e3744 | 26 | #include "log.h" |
43e52561 QY |
27 | #include "memory.h" |
28 | #include "mpls.h" | |
29 | #include "nexthop.h" | |
30 | #include "prefix.h" | |
7514fb77 PJ |
31 | #include "prefix.h" |
32 | #include "routemap.h" | |
43e52561 | 33 | #include "sockunion.h" |
05737783 | 34 | #include "srcdest_table.h" |
43e52561 QY |
35 | #include "table.h" |
36 | #include "thread.h" | |
37 | #include "vrf.h" | |
38 | #include "workqueue.h" | |
50d89650 | 39 | #include "nexthop_group_private.h" |
00dffa8c | 40 | #include "frr_pthread.h" |
61e6de9d | 41 | #include "printfrr.h" |
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}, | |
16d91fce | 119 | [ZEBRA_ROUTE_ALL] = {ZEBRA_ROUTE_ALL, 255, 7}, |
d6abd8b0 | 120 | /* Any new route type added to zebra, should be mirrored here */ |
c710b277 | 121 | |
d62a17ae | 122 | /* no entry/default: 150 */ |
718e3744 | 123 | }; |
6b0655a2 | 124 | |
32367e7a MS |
125 | /* EVPN/VXLAN subqueue is number 1 */ |
126 | #define META_QUEUE_EVPN 1 | |
127 | ||
04bec7b2 MS |
128 | /* Wrapper struct for nhg workqueue items; a 'ctx' is an incoming update |
129 | * from the OS, and an 'nhe' is a nhe update. | |
130 | */ | |
131 | struct wq_nhg_wrapper { | |
132 | int type; | |
133 | union { | |
134 | struct nhg_ctx *ctx; | |
135 | struct nhg_hash_entry *nhe; | |
136 | } u; | |
137 | }; | |
138 | ||
139 | #define WQ_NHG_WRAPPER_TYPE_CTX 0x01 | |
140 | #define WQ_NHG_WRAPPER_TYPE_NHG 0x02 | |
141 | ||
32367e7a MS |
142 | /* Wrapper structs for evpn/vxlan workqueue items. */ |
143 | struct wq_evpn_wrapper { | |
144 | int type; | |
145 | bool add_p; | |
146 | vrf_id_t vrf_id; | |
147 | bool esr_rxed; | |
148 | uint8_t df_alg; | |
149 | uint16_t df_pref; | |
7f7e49d1 MS |
150 | uint32_t flags; |
151 | uint32_t seq; | |
32367e7a | 152 | esi_t esi; |
7f7e49d1 | 153 | vni_t vni; |
32367e7a | 154 | struct ipaddr ip; |
7f7e49d1 | 155 | struct ethaddr macaddr; |
32367e7a | 156 | struct prefix prefix; |
7f7e49d1 | 157 | struct in_addr vtep_ip; |
32367e7a MS |
158 | }; |
159 | ||
7f7e49d1 MS |
160 | #define WQ_EVPN_WRAPPER_TYPE_VRFROUTE 0x01 |
161 | #define WQ_EVPN_WRAPPER_TYPE_REM_ES 0x02 | |
162 | #define WQ_EVPN_WRAPPER_TYPE_REM_MACIP 0x03 | |
7e5b0b2b | 163 | #define WQ_EVPN_WRAPPER_TYPE_REM_VTEP 0x04 |
32367e7a | 164 | |
9d75e309 DL |
165 | /* %pRN is already a printer for route_nodes that just prints the prefix */ |
166 | #ifdef _FRR_ATTRIBUTE_PRINTFRR | |
167 | #pragma FRR printfrr_ext "%pZN" (struct route_node *) | |
168 | #endif | |
169 | ||
170 | printfrr_ext_autoreg_p("ZN", printfrr_zebra_node); | |
171 | static ssize_t printfrr_zebra_node(struct fbuf *buf, struct printfrr_eargs *ea, | |
172 | const void *ptr) | |
2263a412 | 173 | { |
9d75e309 DL |
174 | struct route_node *rn = (struct route_node *)ptr; |
175 | ssize_t rv = 0; | |
176 | ||
177 | /* just the table number? */ | |
178 | if (ea->fmt[0] == 't') { | |
179 | rib_dest_t *dest; | |
c2c02b76 DS |
180 | struct route_entry *re = NULL; |
181 | ||
9d75e309 | 182 | ea->fmt++; |
cb653491 | 183 | |
9d75e309 DL |
184 | if (!rn) |
185 | return bputch(buf, '!'); | |
c2c02b76 DS |
186 | |
187 | dest = rib_dest_from_rnode(rn); | |
188 | if (dest) | |
189 | re = re_list_first(&dest->routes); | |
190 | if (re) | |
9d75e309 DL |
191 | rv += bprintfrr(buf, "%u", re->table); |
192 | else | |
193 | rv += bputch(buf, '?'); | |
194 | ||
d62a17ae | 195 | } else { |
9d75e309 DL |
196 | char cbuf[PREFIX_STRLEN * 2 + 6]; |
197 | struct rib_table_info *info; | |
198 | ||
199 | if (!rn) | |
200 | return bputs(buf, "{(route_node *) NULL}"); | |
2263a412 | 201 | |
9d75e309 DL |
202 | srcdest_rnode2str(rn, cbuf, sizeof(cbuf)); |
203 | rv += bputs(buf, cbuf); | |
204 | ||
205 | info = srcdest_rnode_table_info(rn); | |
206 | if (info->safi == SAFI_MULTICAST) | |
207 | rv += bputs(buf, " (MRIB)"); | |
208 | } | |
209 | return rv; | |
2263a412 DL |
210 | } |
211 | ||
9d75e309 DL |
212 | #define rnode_debug(node, vrf_id, msg, ...) \ |
213 | zlog_debug("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
214 | ##__VA_ARGS__) | |
215 | ||
216 | #define rnode_info(node, vrf_id, msg, ...) \ | |
217 | zlog_info("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
218 | ##__VA_ARGS__) | |
219 | ||
61e6de9d DS |
220 | static char *_dump_re_status(const struct route_entry *re, char *buf, |
221 | size_t len) | |
222 | { | |
223 | if (re->status == 0) { | |
224 | snprintfrr(buf, len, "None "); | |
225 | return buf; | |
226 | } | |
227 | ||
228 | snprintfrr( | |
229 | buf, len, "%s%s%s%s%s%s%s", | |
230 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED) ? "Removed " : "", | |
231 | CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED) ? "Changed " : "", | |
232 | CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED) | |
233 | ? "Label Changed " | |
234 | : "", | |
235 | CHECK_FLAG(re->status, ROUTE_ENTRY_QUEUED) ? "Queued " : "", | |
236 | CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) ? "Installed " | |
237 | : "", | |
238 | CHECK_FLAG(re->status, ROUTE_ENTRY_FAILED) ? "Failed " : "", | |
239 | CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG) ? "Fib NHG " | |
240 | : ""); | |
241 | return buf; | |
242 | } | |
243 | ||
fd289fc8 | 244 | uint8_t route_distance(int type) |
40c7bdb0 | 245 | { |
fd289fc8 | 246 | uint8_t distance; |
40c7bdb0 | 247 | |
d62a17ae | 248 | if ((unsigned)type >= array_size(route_info)) |
249 | distance = 150; | |
250 | else | |
251 | distance = route_info[type].distance; | |
40c7bdb0 | 252 | |
d62a17ae | 253 | return distance; |
40c7bdb0 | 254 | } |
255 | ||
d7c0a89a | 256 | int is_zebra_valid_kernel_table(uint32_t table_id) |
7a4bb9c5 | 257 | { |
8f500a1c | 258 | #ifdef linux |
d62a17ae | 259 | if ((table_id == RT_TABLE_UNSPEC) || (table_id == RT_TABLE_LOCAL) |
260 | || (table_id == RT_TABLE_COMPAT)) | |
261 | return 0; | |
8f500a1c RW |
262 | #endif |
263 | ||
d62a17ae | 264 | return 1; |
7a4bb9c5 DS |
265 | } |
266 | ||
d7c0a89a | 267 | int is_zebra_main_routing_table(uint32_t table_id) |
7a4bb9c5 | 268 | { |
c447ad08 | 269 | if (table_id == RT_TABLE_MAIN) |
d62a17ae | 270 | return 1; |
271 | return 0; | |
7a4bb9c5 DS |
272 | } |
273 | ||
86391e56 | 274 | int zebra_check_addr(const struct prefix *p) |
0aabccc0 | 275 | { |
d62a17ae | 276 | if (p->family == AF_INET) { |
d7c0a89a | 277 | uint32_t addr; |
0aabccc0 | 278 | |
d62a17ae | 279 | addr = p->u.prefix4.s_addr; |
280 | addr = ntohl(addr); | |
0aabccc0 | 281 | |
d62a17ae | 282 | if (IPV4_NET127(addr) || IN_CLASSD(addr) |
283 | || IPV4_LINKLOCAL(addr)) | |
284 | return 0; | |
285 | } | |
286 | if (p->family == AF_INET6) { | |
287 | if (IN6_IS_ADDR_LOOPBACK(&p->u.prefix6)) | |
288 | return 0; | |
289 | if (IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
290 | return 0; | |
291 | } | |
292 | return 1; | |
0aabccc0 DD |
293 | } |
294 | ||
6e26278c DS |
295 | /** |
296 | * copy_nexthop - copy a nexthop to the rib structure. | |
297 | */ | |
d62a17ae | 298 | void route_entry_copy_nexthops(struct route_entry *re, struct nexthop *nh) |
6e26278c | 299 | { |
c415d895 MS |
300 | assert(!re->nhe->nhg.nexthop); |
301 | copy_nexthops(&re->nhe->nhg.nexthop, nh, NULL); | |
718e3744 | 302 | } |
303 | ||
5463ce26 MS |
304 | static void route_entry_attach_ref(struct route_entry *re, |
305 | struct nhg_hash_entry *new) | |
718e3744 | 306 | { |
0eb97b86 | 307 | re->nhe = new; |
5463ce26 | 308 | re->nhe_id = new->id; |
002930f7 | 309 | re->nhe_installed_id = 0; |
718e3744 | 310 | |
5463ce26 | 311 | zebra_nhg_increment_ref(new); |
718e3744 | 312 | } |
313 | ||
002930f7 | 314 | /* Replace (if 'new_nhghe') or clear (if that's NULL) an re's nhe. */ |
cd7108ba EDP |
315 | int route_entry_update_nhe(struct route_entry *re, |
316 | struct nhg_hash_entry *new_nhghe) | |
718e3744 | 317 | { |
5463ce26 | 318 | int ret = 0; |
002930f7 | 319 | struct nhg_hash_entry *old_nhg = NULL; |
718e3744 | 320 | |
cd7108ba | 321 | if (new_nhghe == NULL) { |
002930f7 MS |
322 | old_nhg = re->nhe; |
323 | ||
324 | re->nhe_id = 0; | |
325 | re->nhe_installed_id = 0; | |
c415d895 | 326 | re->nhe = NULL; |
5463ce26 MS |
327 | goto done; |
328 | } | |
718e3744 | 329 | |
1f655680 | 330 | if ((re->nhe_id != 0) && re->nhe && (re->nhe != new_nhghe)) { |
002930f7 MS |
331 | /* Capture previous nhg, if any */ |
332 | old_nhg = re->nhe; | |
718e3744 | 333 | |
cd7108ba | 334 | route_entry_attach_ref(re, new_nhghe); |
84a89a8d | 335 | } else if (!re->nhe) |
5463ce26 | 336 | /* This is the first time it's being attached */ |
cd7108ba | 337 | route_entry_attach_ref(re, new_nhghe); |
595db7f1 | 338 | |
5463ce26 | 339 | done: |
002930f7 MS |
340 | /* Detach / deref previous nhg */ |
341 | if (old_nhg) | |
342 | zebra_nhg_decrement_ref(old_nhg); | |
343 | ||
5463ce26 | 344 | return ret; |
595db7f1 | 345 | } |
346 | ||
2e8db20d EDP |
347 | void rib_handle_nhg_replace(struct nhg_hash_entry *old_entry, |
348 | struct nhg_hash_entry *new_entry) | |
1f655680 SW |
349 | { |
350 | struct zebra_router_table *zrt; | |
351 | struct route_node *rn; | |
352 | struct route_entry *re, *next; | |
353 | ||
354 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || IS_ZEBRA_DEBUG_NHG_DETAIL) | |
355 | zlog_debug("%s: replacing routes nhe (%u) OLD %p NEW %p", | |
2e8db20d | 356 | __func__, new_entry->id, new_entry, old_entry); |
1f655680 SW |
357 | |
358 | /* We have to do them ALL */ | |
359 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) { | |
360 | for (rn = route_top(zrt->table); rn; | |
361 | rn = srcdest_route_next(rn)) { | |
362 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
2e8db20d EDP |
363 | if (re->nhe && re->nhe == old_entry) |
364 | route_entry_update_nhe(re, new_entry); | |
1f655680 SW |
365 | } |
366 | } | |
367 | } | |
368 | } | |
369 | ||
d62a17ae | 370 | struct route_entry *rib_match(afi_t afi, safi_t safi, vrf_id_t vrf_id, |
bc77c3bb MS |
371 | const union g_addr *addr, |
372 | struct route_node **rn_out) | |
d62a17ae | 373 | { |
374 | struct prefix p; | |
375 | struct route_table *table; | |
376 | struct route_node *rn; | |
5f7a4718 | 377 | struct route_entry *match = NULL; |
d62a17ae | 378 | |
379 | /* Lookup table. */ | |
380 | table = zebra_vrf_table(afi, safi, vrf_id); | |
381 | if (!table) | |
382 | return 0; | |
383 | ||
384 | memset(&p, 0, sizeof(struct prefix)); | |
385 | p.family = afi; | |
386 | if (afi == AFI_IP) { | |
387 | p.u.prefix4 = addr->ipv4; | |
936fbaef | 388 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 389 | } else { |
390 | p.u.prefix6 = addr->ipv6; | |
f4d81e55 | 391 | p.prefixlen = IPV6_MAX_BITLEN; |
d62a17ae | 392 | } |
718e3744 | 393 | |
c4efd0f4 | 394 | rn = route_node_match(table, &p); |
718e3744 | 395 | |
d62a17ae | 396 | while (rn) { |
5f7a4718 DS |
397 | rib_dest_t *dest; |
398 | ||
d62a17ae | 399 | route_unlock_node(rn); |
718e3744 | 400 | |
5f7a4718 | 401 | dest = rib_dest_from_rnode(rn); |
996c9314 LB |
402 | if (dest && dest->selected_fib |
403 | && !CHECK_FLAG(dest->selected_fib->status, | |
404 | ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 405 | match = dest->selected_fib; |
718e3744 | 406 | |
d62a17ae | 407 | /* If there is no selected route or matched route is EGP, go up |
408 | tree. */ | |
409 | if (!match) { | |
410 | do { | |
411 | rn = rn->parent; | |
412 | } while (rn && rn->info == NULL); | |
413 | if (rn) | |
414 | route_lock_node(rn); | |
415 | } else { | |
416 | if (match->type != ZEBRA_ROUTE_CONNECT) { | |
677c1dd5 DS |
417 | if (!CHECK_FLAG(match->status, |
418 | ROUTE_ENTRY_INSTALLED)) | |
d62a17ae | 419 | return NULL; |
420 | } | |
421 | ||
422 | if (rn_out) | |
423 | *rn_out = rn; | |
424 | return match; | |
425 | } | |
16814f96 | 426 | } |
d62a17ae | 427 | return NULL; |
428 | } | |
429 | ||
430 | struct route_entry *rib_match_ipv4_multicast(vrf_id_t vrf_id, | |
431 | struct in_addr addr, | |
432 | struct route_node **rn_out) | |
433 | { | |
434 | struct route_entry *re = NULL, *mre = NULL, *ure = NULL; | |
435 | struct route_node *m_rn = NULL, *u_rn = NULL; | |
436 | union g_addr gaddr = {.ipv4 = addr}; | |
437 | ||
526052fb | 438 | switch (zrouter.ipv4_multicast_mode) { |
d62a17ae | 439 | case MCAST_MRIB_ONLY: |
440 | return rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, | |
441 | rn_out); | |
442 | case MCAST_URIB_ONLY: | |
443 | return rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, rn_out); | |
444 | case MCAST_NO_CONFIG: | |
445 | case MCAST_MIX_MRIB_FIRST: | |
446 | re = mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, | |
447 | &m_rn); | |
448 | if (!mre) | |
449 | re = ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, | |
450 | &gaddr, &u_rn); | |
451 | break; | |
452 | case MCAST_MIX_DISTANCE: | |
453 | mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
454 | ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
455 | if (mre && ure) | |
456 | re = ure->distance < mre->distance ? ure : mre; | |
457 | else if (mre) | |
458 | re = mre; | |
459 | else if (ure) | |
460 | re = ure; | |
461 | break; | |
462 | case MCAST_MIX_PFXLEN: | |
463 | mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
464 | ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
465 | if (mre && ure) | |
466 | re = u_rn->p.prefixlen > m_rn->p.prefixlen ? ure : mre; | |
467 | else if (mre) | |
468 | re = mre; | |
469 | else if (ure) | |
470 | re = ure; | |
471 | break; | |
718e3744 | 472 | } |
33550aa8 | 473 | |
d62a17ae | 474 | if (rn_out) |
475 | *rn_out = (re == mre) ? m_rn : u_rn; | |
718e3744 | 476 | |
d62a17ae | 477 | if (IS_ZEBRA_DEBUG_RIB) { |
478 | char buf[BUFSIZ]; | |
479 | inet_ntop(AF_INET, &addr, buf, BUFSIZ); | |
4623d897 | 480 | |
bd47f3a3 JU |
481 | zlog_debug("%s: %s: vrf: %s(%u) found %s, using %s", __func__, |
482 | buf, vrf_id_to_name(vrf_id), vrf_id, | |
d62a17ae | 483 | mre ? (ure ? "MRIB+URIB" : "MRIB") |
484 | : ure ? "URIB" : "nothing", | |
485 | re == ure ? "URIB" : re == mre ? "MRIB" : "none"); | |
486 | } | |
487 | return re; | |
4623d897 DL |
488 | } |
489 | ||
d62a17ae | 490 | struct route_entry *rib_lookup_ipv4(struct prefix_ipv4 *p, vrf_id_t vrf_id) |
718e3744 | 491 | { |
d62a17ae | 492 | struct route_table *table; |
493 | struct route_node *rn; | |
5f7a4718 | 494 | struct route_entry *match = NULL; |
5f7a4718 | 495 | rib_dest_t *dest; |
718e3744 | 496 | |
d62a17ae | 497 | /* Lookup table. */ |
498 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
499 | if (!table) | |
500 | return 0; | |
718e3744 | 501 | |
d62a17ae | 502 | rn = route_node_lookup(table, (struct prefix *)p); |
718e3744 | 503 | |
d62a17ae | 504 | /* No route for this prefix. */ |
505 | if (!rn) | |
506 | return NULL; | |
718e3744 | 507 | |
d62a17ae | 508 | /* Unlock node. */ |
509 | route_unlock_node(rn); | |
5f7a4718 | 510 | dest = rib_dest_from_rnode(rn); |
718e3744 | 511 | |
996c9314 LB |
512 | if (dest && dest->selected_fib |
513 | && !CHECK_FLAG(dest->selected_fib->status, ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 514 | match = dest->selected_fib; |
718e3744 | 515 | |
d62a17ae | 516 | if (!match) |
517 | return NULL; | |
718e3744 | 518 | |
d62a17ae | 519 | if (match->type == ZEBRA_ROUTE_CONNECT) |
520 | return match; | |
f9e1b38e | 521 | |
677c1dd5 DS |
522 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_INSTALLED)) |
523 | return match; | |
718e3744 | 524 | |
d62a17ae | 525 | return NULL; |
718e3744 | 526 | } |
527 | ||
a64448ba DS |
528 | /* |
529 | * Is this RIB labeled-unicast? It must be of type BGP and all paths | |
530 | * (nexthops) must have a label. | |
531 | */ | |
d62a17ae | 532 | int zebra_rib_labeled_unicast(struct route_entry *re) |
a64448ba | 533 | { |
d62a17ae | 534 | struct nexthop *nexthop = NULL; |
a64448ba | 535 | |
d62a17ae | 536 | if (re->type != ZEBRA_ROUTE_BGP) |
537 | return 0; | |
a64448ba | 538 | |
c415d895 | 539 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 540 | if (!nexthop->nh_label || !nexthop->nh_label->num_labels) |
541 | return 0; | |
6b0655a2 | 542 | |
d62a17ae | 543 | return 1; |
a64448ba | 544 | } |
718e3744 | 545 | |
6ae24471 DS |
546 | /* Update flag indicates whether this is a "replace" or not. Currently, this |
547 | * is only used for IPv4. | |
548 | */ | |
0c555cc6 DS |
549 | void rib_install_kernel(struct route_node *rn, struct route_entry *re, |
550 | struct route_entry *old) | |
718e3744 | 551 | { |
d62a17ae | 552 | struct nexthop *nexthop; |
630d5962 | 553 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
d62a17ae | 554 | struct zebra_vrf *zvrf = vrf_info_lookup(re->vrf_id); |
97f5b441 MS |
555 | const struct prefix *p, *src_p; |
556 | enum zebra_dplane_result ret; | |
557 | ||
558 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
718e3744 | 559 | |
d62a17ae | 560 | srcdest_rnode_prefixes(rn, &p, &src_p); |
416ec78d | 561 | |
d62a17ae | 562 | if (info->safi != SAFI_UNICAST) { |
c415d895 | 563 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 564 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 565 | return; |
d62a17ae | 566 | } |
718e3744 | 567 | |
9ef49038 | 568 | |
8dfbc657 SW |
569 | /* |
570 | * Install the resolved nexthop object first. | |
571 | */ | |
c415d895 | 572 | zebra_nhg_install_kernel(re->nhe); |
8dfbc657 | 573 | |
2063a814 DS |
574 | /* |
575 | * If this is a replace to a new RE let the originator of the RE | |
576 | * know that they've lost | |
577 | */ | |
9a9f8926 | 578 | if (old && (old != re) && (old->type != re->type)) |
a7704e1b | 579 | zsend_route_notify_owner(rn, old, ZAPI_ROUTE_BETTER_ADMIN_WON, |
77b38a4a | 580 | info->afi, info->safi); |
25b9cb0c | 581 | |
97f5b441 MS |
582 | /* Update fib selection */ |
583 | dest->selected_fib = re; | |
584 | ||
d62a17ae | 585 | /* |
586 | * Make sure we update the FPM any time we send new information to | |
587 | * the kernel. | |
588 | */ | |
589 | hook_call(rib_update, rn, "installing in kernel"); | |
97f5b441 MS |
590 | |
591 | /* Send add or update */ | |
8263d1d0 | 592 | if (old) |
97f5b441 | 593 | ret = dplane_route_update(rn, re, old); |
5709131c | 594 | else |
97f5b441 | 595 | ret = dplane_route_add(rn, re); |
97f5b441 MS |
596 | |
597 | switch (ret) { | |
ea1c14f6 | 598 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
60f98b23 | 599 | SET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
efe6c026 MS |
600 | |
601 | if (old) { | |
60f98b23 | 602 | SET_FLAG(old->status, ROUTE_ENTRY_QUEUED); |
efe6c026 MS |
603 | |
604 | /* Free old FIB nexthop group */ | |
7483dcbe | 605 | UNSET_FLAG(old->status, ROUTE_ENTRY_USE_FIB_NHG); |
efe6c026 MS |
606 | if (old->fib_ng.nexthop) { |
607 | nexthops_free(old->fib_ng.nexthop); | |
608 | old->fib_ng.nexthop = NULL; | |
609 | } | |
efe6c026 MS |
610 | } |
611 | ||
97f5b441 MS |
612 | if (zvrf) |
613 | zvrf->installs_queued++; | |
1e885672 | 614 | break; |
ea1c14f6 | 615 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 | 616 | { |
97f5b441 | 617 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, |
e658173a DS |
618 | "%u:%u:%pRN: Failed to enqueue dataplane install", |
619 | re->vrf_id, re->table, rn); | |
1e885672 | 620 | break; |
97f5b441 | 621 | } |
ea1c14f6 | 622 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
97f5b441 MS |
623 | if (zvrf) |
624 | zvrf->installs++; | |
1e885672 DS |
625 | break; |
626 | } | |
d62a17ae | 627 | |
0c555cc6 | 628 | return; |
718e3744 | 629 | } |
630 | ||
631 | /* Uninstall the route from kernel. */ | |
0c555cc6 | 632 | void rib_uninstall_kernel(struct route_node *rn, struct route_entry *re) |
718e3744 | 633 | { |
d62a17ae | 634 | struct nexthop *nexthop; |
630d5962 | 635 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
d62a17ae | 636 | struct zebra_vrf *zvrf = vrf_info_lookup(re->vrf_id); |
05737783 | 637 | |
d62a17ae | 638 | if (info->safi != SAFI_UNICAST) { |
677c1dd5 | 639 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 640 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d6792f9d | 641 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 642 | return; |
d62a17ae | 643 | } |
416ec78d | 644 | |
d62a17ae | 645 | /* |
646 | * Make sure we update the FPM any time we send new information to | |
97f5b441 | 647 | * the dataplane. |
d62a17ae | 648 | */ |
649 | hook_call(rib_update, rn, "uninstalling from kernel"); | |
97f5b441 MS |
650 | |
651 | switch (dplane_route_delete(rn, re)) { | |
ea1c14f6 | 652 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
97f5b441 MS |
653 | if (zvrf) |
654 | zvrf->removals_queued++; | |
1e885672 | 655 | break; |
ea1c14f6 | 656 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 | 657 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, |
e658173a DS |
658 | "%u:%pRN: Failed to enqueue dataplane uninstall", |
659 | re->vrf_id, rn); | |
1e885672 | 660 | break; |
ea1c14f6 | 661 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
1e885672 DS |
662 | if (zvrf) |
663 | zvrf->removals++; | |
664 | break; | |
665 | } | |
718e3744 | 666 | |
0c555cc6 | 667 | return; |
718e3744 | 668 | } |
669 | ||
9fd92e3c AS |
670 | /* |
671 | * rib_can_delete_dest | |
672 | * | |
2951a7a4 | 673 | * Returns true if the given dest can be deleted from the table. |
9fd92e3c | 674 | */ |
d62a17ae | 675 | static int rib_can_delete_dest(rib_dest_t *dest) |
9fd92e3c | 676 | { |
045207e2 | 677 | if (re_list_first(&dest->routes)) { |
d62a17ae | 678 | return 0; |
679 | } | |
9fd92e3c | 680 | |
c86ba6c2 DS |
681 | /* |
682 | * Unresolved rnh's are stored on the default route's list | |
683 | * | |
684 | * dest->rnode can also be the source prefix node in an | |
685 | * ipv6 sourcedest table. Fortunately the prefix of a | |
686 | * source prefix node can never be the default prefix. | |
687 | */ | |
688 | if (is_default_prefix(&dest->rnode->p)) | |
689 | return 0; | |
690 | ||
d62a17ae | 691 | /* |
692 | * Don't delete the dest if we have to update the FPM about this | |
693 | * prefix. | |
694 | */ | |
695 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM) | |
696 | || CHECK_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM)) | |
697 | return 0; | |
5adc2528 | 698 | |
d62a17ae | 699 | return 1; |
9fd92e3c AS |
700 | } |
701 | ||
f99f1ff5 SP |
702 | void zebra_rib_evaluate_rn_nexthops(struct route_node *rn, uint32_t seq, |
703 | bool rt_delete) | |
699dae23 DS |
704 | { |
705 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
699dae23 DS |
706 | struct rnh *rnh; |
707 | ||
708 | /* | |
50872b08 | 709 | * We are storing the rnh's associated withb |
699dae23 DS |
710 | * the tracked nexthop as a list of the rn's. |
711 | * Unresolved rnh's are placed at the top | |
712 | * of the tree list.( 0.0.0.0/0 for v4 and 0::0/0 for v6 ) | |
713 | * As such for each rn we need to walk up the tree | |
714 | * and see if any rnh's need to see if they | |
715 | * would match a more specific route | |
716 | */ | |
717 | while (rn) { | |
e658173a | 718 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) |
15569c58 | 719 | zlog_debug( |
e658173a DS |
720 | "%s: %pRN Being examined for Nexthop Tracking Count: %zd", |
721 | __func__, rn, | |
15569c58 | 722 | dest ? rnh_list_count(&dest->nht) : 0); |
e658173a | 723 | |
f99f1ff5 SP |
724 | if (rt_delete && (!dest || !rnh_list_count(&dest->nht))) { |
725 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) | |
726 | zlog_debug("%pRN has no tracking NHTs. Bailing", | |
727 | rn); | |
728 | break; | |
729 | } | |
699dae23 DS |
730 | if (!dest) { |
731 | rn = rn->parent; | |
732 | if (rn) | |
733 | dest = rib_dest_from_rnode(rn); | |
734 | continue; | |
735 | } | |
736 | /* | |
737 | * If we have any rnh's stored in the nht list | |
738 | * then we know that this route node was used for | |
739 | * nht resolution and as such we need to call the | |
740 | * nexthop tracking evaluation code | |
741 | */ | |
739c9c90 | 742 | frr_each_safe(rnh_list, &dest->nht, rnh) { |
699dae23 DS |
743 | struct zebra_vrf *zvrf = |
744 | zebra_vrf_lookup_by_id(rnh->vrf_id); | |
745 | struct prefix *p = &rnh->node->p; | |
746 | ||
e658173a | 747 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) |
bd47f3a3 | 748 | zlog_debug( |
5ef3568f DS |
749 | "%s(%u):%pRN has Nexthop(%pRN) depending on it, evaluating %u:%u", |
750 | zvrf_name(zvrf), zvrf_id(zvrf), rn, | |
751 | rnh->node, seq, rnh->seqno); | |
699dae23 DS |
752 | |
753 | /* | |
754 | * If we have evaluated this node on this pass | |
755 | * already, due to following the tree up | |
756 | * then we know that we can move onto the next | |
757 | * rnh to process. | |
758 | * | |
759 | * Additionally we call zebra_evaluate_rnh | |
760 | * when we gc the dest. In this case we know | |
761 | * that there must be no other re's where | |
762 | * we were originally as such we know that | |
763 | * that sequence number is ok to respect. | |
764 | */ | |
50872b08 DS |
765 | if (rnh->seqno == seq) { |
766 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) | |
767 | zlog_debug( | |
1d5453d6 | 768 | " Node processed and moved already"); |
699dae23 | 769 | continue; |
50872b08 | 770 | } |
699dae23 DS |
771 | |
772 | rnh->seqno = seq; | |
d597533a DS |
773 | zebra_evaluate_rnh(zvrf, family2afi(p->family), 0, p, |
774 | rnh->safi); | |
699dae23 DS |
775 | } |
776 | ||
777 | rn = rn->parent; | |
778 | if (rn) | |
779 | dest = rib_dest_from_rnode(rn); | |
780 | } | |
781 | } | |
782 | ||
9fd92e3c AS |
783 | /* |
784 | * rib_gc_dest | |
785 | * | |
786 | * Garbage collect the rib dest corresponding to the given route node | |
787 | * if appropriate. | |
788 | * | |
2951a7a4 | 789 | * Returns true if the dest was deleted, false otherwise. |
9fd92e3c | 790 | */ |
d62a17ae | 791 | int rib_gc_dest(struct route_node *rn) |
9fd92e3c | 792 | { |
d62a17ae | 793 | rib_dest_t *dest; |
9fd92e3c | 794 | |
d62a17ae | 795 | dest = rib_dest_from_rnode(rn); |
796 | if (!dest) | |
797 | return 0; | |
9fd92e3c | 798 | |
d62a17ae | 799 | if (!rib_can_delete_dest(dest)) |
800 | return 0; | |
9fd92e3c | 801 | |
c9abf558 DS |
802 | if (IS_ZEBRA_DEBUG_RIB) { |
803 | struct zebra_vrf *zvrf; | |
804 | ||
805 | zvrf = rib_dest_vrf(dest); | |
d62a17ae | 806 | rnode_debug(rn, zvrf_id(zvrf), "removing dest from table"); |
c9abf558 | 807 | } |
9fd92e3c | 808 | |
f99f1ff5 SP |
809 | zebra_rib_evaluate_rn_nexthops(rn, zebra_router_get_next_sequence(), |
810 | true); | |
699dae23 | 811 | |
d62a17ae | 812 | dest->rnode = NULL; |
aa57abfb | 813 | rnh_list_fini(&dest->nht); |
d62a17ae | 814 | XFREE(MTYPE_RIB_DEST, dest); |
815 | rn->info = NULL; | |
9fd92e3c | 816 | |
d62a17ae | 817 | /* |
818 | * Release the one reference that we keep on the route node. | |
819 | */ | |
820 | route_unlock_node(rn); | |
821 | return 1; | |
9fd92e3c AS |
822 | } |
823 | ||
224ccf29 DL |
824 | void zebra_rtable_node_cleanup(struct route_table *table, |
825 | struct route_node *node) | |
826 | { | |
827 | struct route_entry *re, *next; | |
828 | ||
829 | RNODE_FOREACH_RE_SAFE (node, re, next) { | |
830 | rib_unlink(node, re); | |
831 | } | |
832 | ||
833 | if (node->info) { | |
834 | rib_dest_t *dest = node->info; | |
835 | ||
836 | rnh_list_fini(&dest->nht); | |
837 | XFREE(MTYPE_RIB_DEST, node->info); | |
838 | } | |
839 | } | |
840 | ||
d62a17ae | 841 | static void rib_process_add_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
842 | struct route_entry *new) | |
3e5c6e00 | 843 | { |
d62a17ae | 844 | hook_call(rib_update, rn, "new route selected"); |
3e5c6e00 | 845 | |
d62a17ae | 846 | /* Update real nexthop. This may actually determine if nexthop is active |
847 | * or not. */ | |
c415d895 | 848 | if (!nexthop_group_active_nexthop_num(&(new->nhe->nhg))) { |
d62a17ae | 849 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
850 | return; | |
851 | } | |
3e5c6e00 | 852 | |
e658173a DS |
853 | if (IS_ZEBRA_DEBUG_RIB) |
854 | zlog_debug("%s(%u:%u):%pRN: Adding route rn %p, re %p (%s)", | |
855 | zvrf_name(zvrf), zvrf_id(zvrf), new->table, rn, rn, | |
c2c02b76 | 856 | new, zebra_route_string(new->type)); |
3e5c6e00 | 857 | |
d62a17ae | 858 | /* If labeled-unicast route, install transit LSP. */ |
859 | if (zebra_rib_labeled_unicast(new)) | |
860 | zebra_mpls_lsp_install(zvrf, rn, new); | |
a64448ba | 861 | |
3cdba47a | 862 | rib_install_kernel(rn, new, NULL); |
3e5c6e00 | 863 | |
d62a17ae | 864 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 865 | } |
866 | ||
d62a17ae | 867 | static void rib_process_del_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
868 | struct route_entry *old) | |
3e5c6e00 | 869 | { |
d62a17ae | 870 | hook_call(rib_update, rn, "removing existing route"); |
3e5c6e00 | 871 | |
d62a17ae | 872 | /* Uninstall from kernel. */ |
e658173a DS |
873 | if (IS_ZEBRA_DEBUG_RIB) |
874 | zlog_debug("%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s)", | |
875 | zvrf_name(zvrf), zvrf_id(zvrf), old->table, rn, rn, | |
c2c02b76 | 876 | old, zebra_route_string(old->type)); |
3e5c6e00 | 877 | |
d62a17ae | 878 | /* If labeled-unicast route, uninstall transit LSP. */ |
879 | if (zebra_rib_labeled_unicast(old)) | |
880 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
881 | ||
3cdba47a | 882 | rib_uninstall_kernel(rn, old); |
d62a17ae | 883 | |
884 | /* Update nexthop for route, reset changed flag. */ | |
ef57f35f DL |
885 | /* Note: this code also handles the Linux case when an interface goes |
886 | * down, causing the kernel to delete routes without sending DELROUTE | |
887 | * notifications | |
888 | */ | |
6883bf8d | 889 | if (RIB_KERNEL_ROUTE(old)) |
212df1de PG |
890 | SET_FLAG(old->status, ROUTE_ENTRY_REMOVED); |
891 | else | |
892 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); | |
d62a17ae | 893 | } |
894 | ||
895 | static void rib_process_update_fib(struct zebra_vrf *zvrf, | |
896 | struct route_node *rn, | |
897 | struct route_entry *old, | |
898 | struct route_entry *new) | |
899 | { | |
d62a17ae | 900 | int nh_active = 0; |
d62a17ae | 901 | |
902 | /* | |
903 | * We have to install or update if a new route has been selected or | |
904 | * something has changed. | |
905 | */ | |
906 | if (new != old || CHECK_FLAG(new->status, ROUTE_ENTRY_CHANGED)) { | |
907 | hook_call(rib_update, rn, "updating existing route"); | |
908 | ||
909 | /* Update the nexthop; we could determine here that nexthop is | |
910 | * inactive. */ | |
c415d895 | 911 | if (nexthop_group_active_nexthop_num(&(new->nhe->nhg))) |
d62a17ae | 912 | nh_active = 1; |
913 | ||
914 | /* If nexthop is active, install the selected route, if | |
915 | * appropriate. If | |
916 | * the install succeeds, cleanup flags for prior route, if | |
917 | * different from | |
918 | * newly selected. | |
919 | */ | |
920 | if (nh_active) { | |
921 | if (IS_ZEBRA_DEBUG_RIB) { | |
d62a17ae | 922 | if (new != old) |
923 | zlog_debug( | |
e658173a | 924 | "%s(%u:%u):%pRN: Updating route rn %p, re %p (%s) old %p (%s)", |
bd47f3a3 | 925 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 926 | new->table, rn, rn, new, |
2da33d6b DS |
927 | zebra_route_string(new->type), |
928 | old, | |
929 | zebra_route_string(old->type)); | |
d62a17ae | 930 | else |
931 | zlog_debug( | |
e658173a | 932 | "%s(%u:%u):%pRN: Updating route rn %p, re %p (%s)", |
bd47f3a3 | 933 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 934 | new->table, rn, rn, new, |
2da33d6b | 935 | zebra_route_string(new->type)); |
d62a17ae | 936 | } |
937 | ||
938 | /* If labeled-unicast route, uninstall transit LSP. */ | |
939 | if (zebra_rib_labeled_unicast(old)) | |
940 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
941 | ||
3cdba47a DS |
942 | /* |
943 | * Non-system route should be installed. | |
944 | * If labeled-unicast route, install transit | |
945 | * LSP. | |
946 | */ | |
947 | if (zebra_rib_labeled_unicast(new)) | |
948 | zebra_mpls_lsp_install(zvrf, rn, new); | |
d62a17ae | 949 | |
3cdba47a | 950 | rib_install_kernel(rn, new, old); |
d62a17ae | 951 | } |
a64448ba | 952 | |
d62a17ae | 953 | /* |
954 | * If nexthop for selected route is not active or install | |
955 | * failed, we | |
956 | * may need to uninstall and delete for redistribution. | |
957 | */ | |
ed216282 | 958 | if (!nh_active) { |
d62a17ae | 959 | if (IS_ZEBRA_DEBUG_RIB) { |
d62a17ae | 960 | if (new != old) |
961 | zlog_debug( | |
e658173a | 962 | "%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s) old %p (%s) - nexthop inactive", |
bd47f3a3 | 963 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 964 | new->table, rn, rn, new, |
2da33d6b DS |
965 | zebra_route_string(new->type), |
966 | old, | |
967 | zebra_route_string(old->type)); | |
d62a17ae | 968 | else |
969 | zlog_debug( | |
e658173a | 970 | "%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s) - nexthop inactive", |
bd47f3a3 | 971 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 972 | new->table, rn, rn, new, |
2da33d6b | 973 | zebra_route_string(new->type)); |
d62a17ae | 974 | } |
975 | ||
5c18e662 DS |
976 | /* |
977 | * When we have gotten to this point | |
978 | * the new route entry has no nexthops | |
979 | * that are usable and as such we need | |
980 | * to remove the old route, but only | |
981 | * if we were the one who installed | |
982 | * the old route | |
983 | */ | |
984 | if (!RIB_SYSTEM_ROUTE(old)) { | |
985 | /* If labeled-unicast route, uninstall transit | |
986 | * LSP. */ | |
987 | if (zebra_rib_labeled_unicast(old)) | |
988 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
d62a17ae | 989 | |
5c18e662 DS |
990 | rib_uninstall_kernel(rn, old); |
991 | } | |
d62a17ae | 992 | } |
993 | } else { | |
994 | /* | |
995 | * Same route selected; check if in the FIB and if not, | |
3cdba47a DS |
996 | * re-install. This is housekeeping code to deal with |
997 | * race conditions in kernel with linux netlink reporting | |
998 | * interface up before IPv4 or IPv6 protocol is ready | |
d62a17ae | 999 | * to add routes. |
1000 | */ | |
3cdba47a DS |
1001 | if (!CHECK_FLAG(new->status, ROUTE_ENTRY_INSTALLED) || |
1002 | RIB_SYSTEM_ROUTE(new)) | |
677c1dd5 | 1003 | rib_install_kernel(rn, new, NULL); |
d62a17ae | 1004 | } |
1005 | ||
1006 | /* Update prior route. */ | |
6883bf8d | 1007 | if (new != old) |
d62a17ae | 1008 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 1009 | |
d62a17ae | 1010 | /* Clear changed flag. */ |
1011 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); | |
3e5c6e00 | 1012 | } |
1013 | ||
d62a17ae | 1014 | /* Check if 'alternate' RIB entry is better than 'current'. */ |
1015 | static struct route_entry *rib_choose_best(struct route_entry *current, | |
1016 | struct route_entry *alternate) | |
1017 | { | |
1018 | if (current == NULL) | |
1019 | return alternate; | |
1020 | ||
1021 | /* filter route selection in following order: | |
1022 | * - connected beats other types | |
fec4ca19 | 1023 | * - if both connected, loopback or vrf wins |
d62a17ae | 1024 | * - lower distance beats higher |
1025 | * - lower metric beats higher for equal distance | |
1026 | * - last, hence oldest, route wins tie break. | |
1027 | */ | |
1028 | ||
fec4ca19 DS |
1029 | /* Connected routes. Check to see if either are a vrf |
1030 | * or loopback interface. If not, pick the last connected | |
d62a17ae | 1031 | * route of the set of lowest metric connected routes. |
1032 | */ | |
1033 | if (alternate->type == ZEBRA_ROUTE_CONNECT) { | |
fec4ca19 DS |
1034 | if (current->type != ZEBRA_ROUTE_CONNECT) |
1035 | return alternate; | |
1036 | ||
1037 | /* both are connected. are either loop or vrf? */ | |
1038 | struct nexthop *nexthop = NULL; | |
1039 | ||
c415d895 | 1040 | for (ALL_NEXTHOPS(alternate->nhe->nhg, nexthop)) { |
873fde8c | 1041 | struct interface *ifp = if_lookup_by_index( |
1042 | nexthop->ifindex, alternate->vrf_id); | |
1043 | ||
608c8870 | 1044 | if (ifp && if_is_loopback(ifp)) |
fec4ca19 DS |
1045 | return alternate; |
1046 | } | |
1047 | ||
c415d895 | 1048 | for (ALL_NEXTHOPS(current->nhe->nhg, nexthop)) { |
873fde8c | 1049 | struct interface *ifp = if_lookup_by_index( |
1050 | nexthop->ifindex, current->vrf_id); | |
1051 | ||
608c8870 | 1052 | if (ifp && if_is_loopback(ifp)) |
fec4ca19 DS |
1053 | return current; |
1054 | } | |
1055 | ||
1056 | /* Neither are loop or vrf so pick best metric */ | |
1057 | if (alternate->metric <= current->metric) | |
d62a17ae | 1058 | return alternate; |
1059 | ||
1060 | return current; | |
1061 | } | |
3e5c6e00 | 1062 | |
d62a17ae | 1063 | if (current->type == ZEBRA_ROUTE_CONNECT) |
1064 | return current; | |
3e5c6e00 | 1065 | |
d62a17ae | 1066 | /* higher distance loses */ |
1067 | if (alternate->distance < current->distance) | |
1068 | return alternate; | |
1069 | if (current->distance < alternate->distance) | |
1070 | return current; | |
3e5c6e00 | 1071 | |
d62a17ae | 1072 | /* metric tie-breaks equal distance */ |
1073 | if (alternate->metric <= current->metric) | |
1074 | return alternate; | |
3e5c6e00 | 1075 | |
d62a17ae | 1076 | return current; |
3e5c6e00 | 1077 | } |
1078 | ||
d62a17ae | 1079 | /* Core function for processing routing information base. */ |
1080 | static void rib_process(struct route_node *rn) | |
1081 | { | |
1082 | struct route_entry *re; | |
1083 | struct route_entry *next; | |
1084 | struct route_entry *old_selected = NULL; | |
1085 | struct route_entry *new_selected = NULL; | |
1086 | struct route_entry *old_fib = NULL; | |
1087 | struct route_entry *new_fib = NULL; | |
1088 | struct route_entry *best = NULL; | |
d62a17ae | 1089 | rib_dest_t *dest; |
1090 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1091 | struct vrf *vrf; |
86391e56 | 1092 | |
d62a17ae | 1093 | vrf_id_t vrf_id = VRF_UNKNOWN; |
1094 | ||
1095 | assert(rn); | |
1096 | ||
1097 | dest = rib_dest_from_rnode(rn); | |
f0afc61d DS |
1098 | /* |
1099 | * We have an enqueued node with nothing to process here | |
1100 | * let's just finish up and return; | |
1101 | */ | |
1102 | if (!dest) | |
1103 | return; | |
bab85d4f | 1104 | |
f0afc61d DS |
1105 | zvrf = rib_dest_vrf(dest); |
1106 | vrf_id = zvrf_id(zvrf); | |
bd47f3a3 | 1107 | |
bd47f3a3 | 1108 | vrf = vrf_lookup_by_id(vrf_id); |
bab85d4f | 1109 | |
607425e5 DS |
1110 | /* |
1111 | * we can have rn's that have a NULL info pointer | |
1112 | * (dest). As such let's not let the deref happen | |
1113 | * additionally we know RNODE_FOREACH_RE_SAFE | |
1114 | * will not iterate so we are ok. | |
1115 | */ | |
f0afc61d DS |
1116 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1117 | struct route_entry *re = re_list_first(&dest->routes); | |
f5158712 | 1118 | |
e658173a DS |
1119 | zlog_debug("%s(%u:%u):%pRN: Processing rn %p", |
1120 | VRF_LOGNAME(vrf), vrf_id, re->table, rn, | |
f0afc61d | 1121 | rn); |
f5158712 | 1122 | } |
5f7a4718 | 1123 | |
f0afc61d DS |
1124 | old_fib = dest->selected_fib; |
1125 | ||
a2addae8 | 1126 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
61e6de9d DS |
1127 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1128 | char flags_buf[128]; | |
1129 | char status_buf[128]; | |
1130 | ||
d62a17ae | 1131 | zlog_debug( |
e658173a DS |
1132 | "%s(%u:%u):%pRN: Examine re %p (%s) status: %sflags: %sdist %d metric %d", |
1133 | VRF_LOGNAME(vrf), vrf_id, re->table, rn, re, | |
61e6de9d DS |
1134 | zebra_route_string(re->type), |
1135 | _dump_re_status(re, status_buf, | |
1136 | sizeof(status_buf)), | |
1137 | zclient_dump_route_flags(re->flags, flags_buf, | |
1138 | sizeof(flags_buf)), | |
1139 | re->distance, re->metric); | |
1140 | } | |
d62a17ae | 1141 | |
d62a17ae | 1142 | /* Currently selected re. */ |
1143 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) { | |
1144 | assert(old_selected == NULL); | |
1145 | old_selected = re; | |
1146 | } | |
bab85d4f | 1147 | |
d62a17ae | 1148 | /* Skip deleted entries from selection */ |
1149 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1150 | continue; | |
1151 | ||
9d221fac DS |
1152 | /* |
1153 | * If the route entry has changed, verify/resolve | |
1154 | * the nexthops associated with the entry. | |
1155 | * | |
1156 | * In any event if we have nexthops that are not active | |
1157 | * then we cannot use this particular route entry so | |
1158 | * skip it. | |
d62a17ae | 1159 | */ |
9d221fac DS |
1160 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED)) { |
1161 | if (!nexthop_active_update(rn, re)) { | |
7e010c4b DS |
1162 | const struct prefix *p; |
1163 | struct rib_table_info *info; | |
1164 | ||
9d221fac DS |
1165 | if (re->type == ZEBRA_ROUTE_TABLE) { |
1166 | /* XXX: HERE BE DRAGONS!!!!! | |
1167 | * In all honesty, I have not yet | |
1168 | * figured out what this part does or | |
1169 | * why the ROUTE_ENTRY_CHANGED test | |
1170 | * above is correct or why we need to | |
1171 | * delete a route here, and also not | |
1172 | * whether this concerns both selected | |
1173 | * and fib route, or only selected | |
1174 | * or only fib | |
1175 | * | |
1176 | * This entry was denied by the 'ip | |
1177 | * protocol | |
1178 | * table' route-map, we need to delete | |
1179 | * it */ | |
1180 | if (re != old_selected) { | |
1181 | if (IS_ZEBRA_DEBUG_RIB) | |
1182 | zlog_debug( | |
e658173a | 1183 | "%s: %s(%u):%pRN: imported via import-table but denied by the ip protocol table route-map", |
9d221fac DS |
1184 | __func__, |
1185 | VRF_LOGNAME( | |
1186 | vrf), | |
e658173a | 1187 | vrf_id, rn); |
9d221fac DS |
1188 | rib_unlink(rn, re); |
1189 | } else | |
1190 | SET_FLAG(re->status, | |
1191 | ROUTE_ENTRY_REMOVED); | |
1192 | } | |
d62a17ae | 1193 | |
7e010c4b DS |
1194 | info = srcdest_rnode_table_info(rn); |
1195 | srcdest_rnode_prefixes(rn, &p, NULL); | |
a7704e1b DS |
1196 | zsend_route_notify_owner( |
1197 | rn, re, ZAPI_ROUTE_FAIL_INSTALL, | |
1198 | info->afi, info->safi); | |
9d221fac DS |
1199 | continue; |
1200 | } | |
1201 | } else { | |
1202 | /* | |
1203 | * If the re has not changed and the nhg we have is | |
1204 | * not usable, then we cannot use this route entry | |
1205 | * for consideration, as that the route will just | |
1206 | * not install if it is selected. | |
1207 | */ | |
1208 | if (!nexthop_group_active_nexthop_num(&re->nhe->nhg)) | |
1209 | continue; | |
d62a17ae | 1210 | } |
bab85d4f | 1211 | |
d62a17ae | 1212 | /* Infinite distance. */ |
3332f4f0 DS |
1213 | if (re->distance == DISTANCE_INFINITY && |
1214 | re->type != ZEBRA_ROUTE_KERNEL) { | |
d62a17ae | 1215 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
1216 | continue; | |
1217 | } | |
bab85d4f | 1218 | |
d62a17ae | 1219 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_FIB_OVERRIDE)) { |
1220 | best = rib_choose_best(new_fib, re); | |
1221 | if (new_fib && best != new_fib) | |
1222 | UNSET_FLAG(new_fib->status, | |
1223 | ROUTE_ENTRY_CHANGED); | |
1224 | new_fib = best; | |
1225 | } else { | |
1226 | best = rib_choose_best(new_selected, re); | |
1227 | if (new_selected && best != new_selected) | |
1228 | UNSET_FLAG(new_selected->status, | |
1229 | ROUTE_ENTRY_CHANGED); | |
1230 | new_selected = best; | |
1231 | } | |
1232 | if (best != re) | |
1233 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
1234 | } /* RNODE_FOREACH_RE */ | |
1235 | ||
1236 | /* If no FIB override route, use the selected route also for FIB */ | |
1237 | if (new_fib == NULL) | |
1238 | new_fib = new_selected; | |
1239 | ||
1240 | /* After the cycle is finished, the following pointers will be set: | |
1241 | * old_selected --- RE entry currently having SELECTED | |
1242 | * new_selected --- RE entry that is newly SELECTED | |
1243 | * old_fib --- RE entry currently in kernel FIB | |
1244 | * new_fib --- RE entry that is newly to be in kernel FIB | |
1245 | * | |
1246 | * new_selected will get SELECTED flag, and is going to be redistributed | |
1247 | * the zclients. new_fib (which can be new_selected) will be installed | |
1248 | * in kernel. | |
1249 | */ | |
1250 | ||
1251 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
c2c02b76 DS |
1252 | struct route_entry *entry; |
1253 | ||
1254 | entry = old_selected | |
1255 | ? old_selected | |
1256 | : new_selected | |
1257 | ? new_selected | |
1258 | : old_fib ? old_fib | |
1259 | : new_fib ? new_fib : NULL; | |
1260 | ||
d62a17ae | 1261 | zlog_debug( |
e658173a DS |
1262 | "%s(%u:%u):%pRN: After processing: old_selected %p new_selected %p old_fib %p new_fib %p", |
1263 | VRF_LOGNAME(vrf), vrf_id, entry ? entry->table : 0, rn, | |
c2c02b76 DS |
1264 | (void *)old_selected, (void *)new_selected, |
1265 | (void *)old_fib, (void *)new_fib); | |
d62a17ae | 1266 | } |
446bb95e | 1267 | |
d62a17ae | 1268 | /* Buffer ROUTE_ENTRY_CHANGED here, because it will get cleared if |
1269 | * fib == selected */ | |
9d303b37 DL |
1270 | bool selected_changed = new_selected && CHECK_FLAG(new_selected->status, |
1271 | ROUTE_ENTRY_CHANGED); | |
d62a17ae | 1272 | |
8cb41cd6 | 1273 | /* Update SELECTED entry */ |
d62a17ae | 1274 | if (old_selected != new_selected || selected_changed) { |
93bdadae | 1275 | |
6883bf8d | 1276 | if (new_selected && new_selected != new_fib) |
d62a17ae | 1277 | UNSET_FLAG(new_selected->status, ROUTE_ENTRY_CHANGED); |
41ec9222 | 1278 | |
3cdba47a | 1279 | if (new_selected) |
5af4b346 MS |
1280 | SET_FLAG(new_selected->flags, ZEBRA_FLAG_SELECTED); |
1281 | ||
d62a17ae | 1282 | if (old_selected) { |
40f321c0 MS |
1283 | /* |
1284 | * If we're removing the old entry, we should tell | |
1285 | * redist subscribers about that *if* they aren't | |
1286 | * going to see a redist for the new entry. | |
1287 | */ | |
1288 | if (!new_selected || CHECK_FLAG(old_selected->status, | |
1289 | ROUTE_ENTRY_REMOVED)) | |
b3a9fca1 | 1290 | redistribute_delete(rn, old_selected, |
40f321c0 MS |
1291 | new_selected); |
1292 | ||
d62a17ae | 1293 | if (old_selected != new_selected) |
1294 | UNSET_FLAG(old_selected->flags, | |
1295 | ZEBRA_FLAG_SELECTED); | |
f857321e | 1296 | } |
d62a17ae | 1297 | } |
3e5c6e00 | 1298 | |
f68ce976 DL |
1299 | /* Update fib according to selection results */ |
1300 | if (new_fib && old_fib) | |
1301 | rib_process_update_fib(zvrf, rn, old_fib, new_fib); | |
1302 | else if (new_fib) | |
1303 | rib_process_add_fib(zvrf, rn, new_fib); | |
1304 | else if (old_fib) | |
1305 | rib_process_del_fib(zvrf, rn, old_fib); | |
1306 | ||
d62a17ae | 1307 | /* Remove all RE entries queued for removal */ |
a2addae8 | 1308 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 1309 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { |
1310 | if (IS_ZEBRA_DEBUG_RIB) { | |
1311 | rnode_debug(rn, vrf_id, "rn %p, removing re %p", | |
1312 | (void *)rn, (void *)re); | |
1313 | } | |
1314 | rib_unlink(rn, re); | |
1315 | } | |
1316 | } | |
4d38fdb4 | 1317 | |
d62a17ae | 1318 | /* |
1319 | * Check if the dest can be deleted now. | |
1320 | */ | |
1321 | rib_gc_dest(rn); | |
e96f9203 DO |
1322 | } |
1323 | ||
a1494c25 DS |
1324 | static void zebra_rib_evaluate_mpls(struct route_node *rn) |
1325 | { | |
1326 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
1327 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1328 | ||
1329 | if (!dest) | |
1330 | return; | |
1331 | ||
1332 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_LSPS)) { | |
1333 | if (IS_ZEBRA_DEBUG_MPLS) | |
1334 | zlog_debug( | |
bd47f3a3 JU |
1335 | "%s(%u): Scheduling all LSPs upon RIB completion", |
1336 | zvrf_name(zvrf), zvrf_id(zvrf)); | |
a1494c25 DS |
1337 | zebra_mpls_lsp_schedule(zvrf); |
1338 | mpls_unmark_lsps_for_processing(rn); | |
1339 | } | |
1340 | } | |
1341 | ||
e5ac2adf MS |
1342 | /* |
1343 | * Utility to match route with dplane context data | |
1344 | */ | |
1345 | static bool rib_route_match_ctx(const struct route_entry *re, | |
25779064 MS |
1346 | const struct zebra_dplane_ctx *ctx, |
1347 | bool is_update) | |
e5ac2adf MS |
1348 | { |
1349 | bool result = false; | |
1350 | ||
1351 | if (is_update) { | |
1352 | /* | |
1353 | * In 'update' case, we test info about the 'previous' or | |
1354 | * 'old' route | |
1355 | */ | |
1356 | if ((re->type == dplane_ctx_get_old_type(ctx)) && | |
1357 | (re->instance == dplane_ctx_get_old_instance(ctx))) { | |
1358 | result = true; | |
1359 | ||
9db35a5e MS |
1360 | /* We use an extra test for statics, and another for |
1361 | * kernel routes. | |
e5ac2adf MS |
1362 | */ |
1363 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1364 | (re->distance != dplane_ctx_get_old_distance(ctx) || | |
1365 | re->tag != dplane_ctx_get_old_tag(ctx))) { | |
1366 | result = false; | |
9db35a5e MS |
1367 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1368 | re->metric != | |
1369 | dplane_ctx_get_old_metric(ctx)) { | |
1370 | result = false; | |
e5ac2adf MS |
1371 | } |
1372 | } | |
1373 | ||
1374 | } else { | |
1375 | /* | |
1376 | * Ordinary, single-route case using primary context info | |
1377 | */ | |
1378 | if ((dplane_ctx_get_op(ctx) != DPLANE_OP_ROUTE_DELETE) && | |
1379 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
1380 | /* Skip route that's been deleted */ | |
1381 | goto done; | |
1382 | } | |
1383 | ||
1384 | if ((re->type == dplane_ctx_get_type(ctx)) && | |
1385 | (re->instance == dplane_ctx_get_instance(ctx))) { | |
1386 | result = true; | |
1387 | ||
9db35a5e MS |
1388 | /* We use an extra test for statics, and another for |
1389 | * kernel routes. | |
e5ac2adf MS |
1390 | */ |
1391 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1392 | (re->distance != dplane_ctx_get_distance(ctx) || | |
1393 | re->tag != dplane_ctx_get_tag(ctx))) { | |
1394 | result = false; | |
9db35a5e MS |
1395 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1396 | re->metric != dplane_ctx_get_metric(ctx)) { | |
1397 | result = false; | |
1398 | } else if (re->type == ZEBRA_ROUTE_CONNECT) { | |
1399 | result = nexthop_group_equal_no_recurse( | |
1400 | &re->nhe->nhg, dplane_ctx_get_ng(ctx)); | |
e5ac2adf MS |
1401 | } |
1402 | } | |
1403 | } | |
1404 | ||
1405 | done: | |
1406 | ||
1407 | return (result); | |
1408 | } | |
1409 | ||
3cdba47a DS |
1410 | static void zebra_rib_fixup_system(struct route_node *rn) |
1411 | { | |
1412 | struct route_entry *re; | |
1413 | ||
1414 | RNODE_FOREACH_RE(rn, re) { | |
1415 | struct nexthop *nhop; | |
1416 | ||
1417 | if (!RIB_SYSTEM_ROUTE(re)) | |
1418 | continue; | |
1419 | ||
1420 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1421 | continue; | |
1422 | ||
1423 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
6d0ee6a0 | 1424 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
3cdba47a | 1425 | |
c415d895 | 1426 | for (ALL_NEXTHOPS(re->nhe->nhg, nhop)) { |
3cdba47a DS |
1427 | if (CHECK_FLAG(nhop->flags, NEXTHOP_FLAG_RECURSIVE)) |
1428 | continue; | |
1429 | ||
1430 | SET_FLAG(nhop->flags, NEXTHOP_FLAG_FIB); | |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | ||
9db35a5e MS |
1435 | /* Route comparison logic, with various special cases. */ |
1436 | static bool rib_compare_routes(const struct route_entry *re1, | |
1437 | const struct route_entry *re2) | |
1438 | { | |
9db35a5e MS |
1439 | if (re1->type != re2->type) |
1440 | return false; | |
1441 | ||
1442 | if (re1->instance != re2->instance) | |
1443 | return false; | |
1444 | ||
1445 | if (re1->type == ZEBRA_ROUTE_KERNEL && re1->metric != re2->metric) | |
1446 | return false; | |
1447 | ||
1448 | if (CHECK_FLAG(re1->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && | |
1449 | re1->distance != re2->distance) | |
1450 | return false; | |
1451 | ||
87009d7d MS |
1452 | /* We support multiple connected routes: this supports multiple |
1453 | * v6 link-locals, and we also support multiple addresses in the same | |
1454 | * subnet on a single interface. | |
1455 | */ | |
9db35a5e MS |
1456 | if (re1->type != ZEBRA_ROUTE_CONNECT) |
1457 | return true; | |
1458 | ||
87009d7d | 1459 | return false; |
9db35a5e MS |
1460 | } |
1461 | ||
9959f1da MS |
1462 | /* |
1463 | * Compare nexthop lists from a route and a dplane context; test whether | |
1464 | * the list installed in the FIB matches the route's list. | |
1465 | * Set 'changed_p' to 'true' if there were changes to the route's | |
1466 | * installed nexthops. | |
1467 | * | |
1468 | * Return 'false' if any ACTIVE route nexthops are not mentioned in the FIB | |
1469 | * list. | |
1470 | */ | |
1471 | static bool rib_update_nhg_from_ctx(struct nexthop_group *re_nhg, | |
1472 | const struct nexthop_group *ctx_nhg, | |
1473 | bool *changed_p) | |
1474 | { | |
1475 | bool matched_p = true; | |
1476 | struct nexthop *nexthop, *ctx_nexthop; | |
1477 | ||
1478 | /* Get the first `installed` one to check against. | |
1479 | * If the dataplane doesn't set these to be what was actually installed, | |
1480 | * it will just be whatever was in re->nhe->nhg? | |
1481 | */ | |
1482 | ctx_nexthop = ctx_nhg->nexthop; | |
1483 | ||
1484 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
1485 | || !CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1486 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1487 | ||
1488 | for (ALL_NEXTHOPS_PTR(re_nhg, nexthop)) { | |
1489 | ||
1490 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
1491 | continue; | |
1492 | ||
1493 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1494 | continue; | |
1495 | ||
1496 | /* Check for a FIB nexthop corresponding to the RIB nexthop */ | |
7483dcbe | 1497 | if (!nexthop_same(ctx_nexthop, nexthop)) { |
9959f1da MS |
1498 | /* If the FIB doesn't know about the nexthop, |
1499 | * it's not installed | |
1500 | */ | |
1501 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || | |
1502 | IS_ZEBRA_DEBUG_NHG_DETAIL) { | |
1503 | zlog_debug("%s: no ctx match for rib nh %pNHv %s", | |
1504 | __func__, nexthop, | |
1505 | (CHECK_FLAG(nexthop->flags, | |
1506 | NEXTHOP_FLAG_FIB) ? | |
1507 | "(FIB)":"")); | |
1508 | } | |
1509 | matched_p = false; | |
1510 | ||
1511 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1512 | *changed_p = true; | |
1513 | ||
1514 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1515 | ||
1516 | /* Keep checking nexthops */ | |
1517 | continue; | |
1518 | } | |
1519 | ||
1520 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1521 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1522 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1523 | zlog_debug("%s: rib nh %pNHv -> installed", | |
1524 | __func__, nexthop); | |
1525 | ||
1526 | *changed_p = true; | |
1527 | } | |
1528 | ||
1529 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1530 | } else { | |
1531 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1532 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1533 | zlog_debug("%s: rib nh %pNHv -> uninstalled", | |
1534 | __func__, nexthop); | |
1535 | ||
1536 | *changed_p = true; | |
1537 | } | |
1538 | ||
1539 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1540 | } | |
1541 | ||
1542 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1543 | } | |
1544 | ||
1545 | return matched_p; | |
1546 | } | |
1547 | ||
e5ac2adf | 1548 | /* |
78bf56b0 MS |
1549 | * Update a route from a dplane context. This consolidates common code |
1550 | * that can be used in processing of results from FIB updates, and in | |
1551 | * async notification processing. | |
efe6c026 | 1552 | * The return is 'true' if the installed nexthops changed; 'false' otherwise. |
e5ac2adf | 1553 | */ |
efe6c026 MS |
1554 | static bool rib_update_re_from_ctx(struct route_entry *re, |
1555 | struct route_node *rn, | |
1556 | struct zebra_dplane_ctx *ctx) | |
78bf56b0 | 1557 | { |
9959f1da | 1558 | struct nexthop *nexthop; |
941e261c MS |
1559 | bool matched; |
1560 | const struct nexthop_group *ctxnhg; | |
9959f1da | 1561 | struct nexthop_group *re_nhg; |
efe6c026 MS |
1562 | bool is_selected = false; /* Is 're' currently the selected re? */ |
1563 | bool changed_p = false; /* Change to nexthops? */ | |
1564 | rib_dest_t *dest; | |
bd47f3a3 JU |
1565 | struct vrf *vrf; |
1566 | ||
1567 | vrf = vrf_lookup_by_id(re->vrf_id); | |
78bf56b0 | 1568 | |
efe6c026 MS |
1569 | dest = rib_dest_from_rnode(rn); |
1570 | if (dest) | |
1571 | is_selected = (re == dest->selected_fib); | |
1572 | ||
1573 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2919eea8 DS |
1574 | zlog_debug("update_from_ctx: %s(%u:%u):%pRN: %sSELECTED, re %p", |
1575 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
9db35a5e | 1576 | (is_selected ? "" : "NOT "), re); |
efe6c026 MS |
1577 | |
1578 | /* Update zebra's nexthop FIB flag for each nexthop that was installed. | |
941e261c | 1579 | * If the installed set differs from the set requested by the rib/owner, |
efe6c026 MS |
1580 | * we use the fib-specific nexthop-group to record the actual FIB |
1581 | * status. | |
78bf56b0 | 1582 | */ |
a126f120 MS |
1583 | matched = false; |
1584 | ctxnhg = dplane_ctx_get_ng(ctx); | |
941e261c | 1585 | |
9959f1da | 1586 | /* Check route's fib group and incoming notif group for equivalence. |
986a6617 SW |
1587 | * |
1588 | * Let's assume the nexthops are ordered here to save time. | |
941e261c | 1589 | */ |
9959f1da MS |
1590 | /* TODO -- this isn't testing or comparing the FIB flags; we should |
1591 | * do a more explicit loop, checking the incoming notification's flags. | |
1592 | */ | |
a126f120 MS |
1593 | if (re->fib_ng.nexthop && ctxnhg->nexthop && |
1594 | nexthop_group_equal(&re->fib_ng, ctxnhg)) | |
986a6617 | 1595 | matched = true; |
941e261c MS |
1596 | |
1597 | /* If the new FIB set matches the existing FIB set, we're done. */ | |
1598 | if (matched) { | |
1599 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1600 | zlog_debug( |
2919eea8 DS |
1601 | "%s(%u:%u):%pRN update_from_ctx(): existing fib nhg, no change", |
1602 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
9959f1da | 1603 | goto check_backups; |
941e261c | 1604 | |
7483dcbe | 1605 | } else if (CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG)) { |
941e261c MS |
1606 | /* |
1607 | * Free stale fib list and move on to check the rib nhg. | |
1608 | */ | |
1609 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1610 | zlog_debug( |
2919eea8 DS |
1611 | "%s(%u:%u):%pRN update_from_ctx(): replacing fib nhg", |
1612 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1613 | nexthops_free(re->fib_ng.nexthop); |
1614 | re->fib_ng.nexthop = NULL; | |
efe6c026 | 1615 | |
7483dcbe MS |
1616 | UNSET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); |
1617 | ||
efe6c026 MS |
1618 | /* Note that the installed nexthops have changed */ |
1619 | changed_p = true; | |
941e261c MS |
1620 | } else { |
1621 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1622 | zlog_debug( |
1623 | "%s(%u:%u):%pRN update_from_ctx(): no fib nhg", | |
1624 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1625 | } |
1626 | ||
1627 | /* | |
1628 | * Compare with the rib nexthop group. The comparison here is different: | |
1629 | * the RIB group may be a superset of the list installed in the FIB. We | |
1630 | * walk the RIB group, looking for the 'installable' candidate | |
1631 | * nexthops, and then check those against the set | |
1632 | * that is actually installed. | |
986a6617 SW |
1633 | * |
1634 | * Assume nexthops are ordered here as well. | |
941e261c | 1635 | */ |
986a6617 | 1636 | |
9959f1da | 1637 | /* If nothing is installed, we can skip some of the checking/comparison |
1f6a5aca MS |
1638 | * of nexthops. |
1639 | */ | |
9959f1da | 1640 | if (ctxnhg->nexthop == NULL) { |
1f6a5aca MS |
1641 | changed_p = true; |
1642 | goto no_nexthops; | |
1643 | } | |
1644 | ||
9959f1da | 1645 | matched = rib_update_nhg_from_ctx(&(re->nhe->nhg), ctxnhg, &changed_p); |
78bf56b0 | 1646 | |
941e261c MS |
1647 | /* If all nexthops were processed, we're done */ |
1648 | if (matched) { | |
1649 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1650 | zlog_debug( |
2919eea8 DS |
1651 | "%s(%u:%u):%pRN update_from_ctx(): rib nhg matched, changed '%s'", |
1652 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
1653 | (changed_p ? "true" : "false")); | |
9959f1da | 1654 | goto check_backups; |
941e261c | 1655 | } |
78bf56b0 | 1656 | |
1f6a5aca MS |
1657 | no_nexthops: |
1658 | ||
941e261c MS |
1659 | /* FIB nexthop set differs from the RIB set: |
1660 | * create a fib-specific nexthop-group | |
1661 | */ | |
1662 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1663 | zlog_debug( |
2919eea8 DS |
1664 | "%s(%u:%u):%pRN update_from_ctx(): changed %s, adding new fib nhg%s", |
1665 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
7483dcbe MS |
1666 | (changed_p ? "true" : "false"), |
1667 | ctxnhg->nexthop != NULL ? "" : " (empty)"); | |
941e261c | 1668 | |
7483dcbe MS |
1669 | /* Set the flag about the dedicated fib list */ |
1670 | SET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); | |
188a00e0 MS |
1671 | if (ctxnhg->nexthop) |
1672 | copy_nexthops(&(re->fib_ng.nexthop), ctxnhg->nexthop, NULL); | |
941e261c | 1673 | |
9959f1da MS |
1674 | check_backups: |
1675 | ||
1676 | /* | |
1677 | * Check the status of the route's backup nexthops, if any. | |
1678 | * The logic for backups is somewhat different: if any backup is | |
1679 | * installed, a new fib nhg will be attached to the route. | |
1680 | */ | |
1681 | re_nhg = zebra_nhg_get_backup_nhg(re->nhe); | |
1682 | if (re_nhg == NULL) | |
1683 | goto done; /* No backup nexthops */ | |
1684 | ||
1685 | /* First check the route's 'fib' list of backups, if it's present | |
1686 | * from some previous event. | |
1687 | */ | |
1688 | re_nhg = &re->fib_backup_ng; | |
1689 | ctxnhg = dplane_ctx_get_backup_ng(ctx); | |
1690 | ||
1691 | matched = false; | |
1692 | if (re_nhg->nexthop && ctxnhg && nexthop_group_equal(re_nhg, ctxnhg)) | |
1693 | matched = true; | |
1694 | ||
1695 | /* If the new FIB set matches an existing FIB set, we're done. */ | |
1696 | if (matched) { | |
1697 | if (IS_ZEBRA_DEBUG_RIB) | |
1698 | zlog_debug( | |
2919eea8 DS |
1699 | "%s(%u):%pRN update_from_ctx(): existing fib backup nhg, no change", |
1700 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1701 | goto done; |
1702 | ||
1703 | } else if (re->fib_backup_ng.nexthop) { | |
1704 | /* | |
1705 | * Free stale fib backup list and move on to check | |
1706 | * the route's backups. | |
1707 | */ | |
1708 | if (IS_ZEBRA_DEBUG_RIB) | |
1709 | zlog_debug( | |
2919eea8 DS |
1710 | "%s(%u):%pRN update_from_ctx(): replacing fib backup nhg", |
1711 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1712 | nexthops_free(re->fib_backup_ng.nexthop); |
1713 | re->fib_backup_ng.nexthop = NULL; | |
1714 | ||
1715 | /* Note that the installed nexthops have changed */ | |
1716 | changed_p = true; | |
1717 | } else { | |
1718 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1719 | zlog_debug( |
1720 | "%s(%u):%pRN update_from_ctx(): no fib backup nhg", | |
1721 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1722 | } |
1723 | ||
1724 | /* | |
7483dcbe | 1725 | * If a FIB backup nexthop set exists, attach a copy |
9959f1da MS |
1726 | * to the route if any backup is installed |
1727 | */ | |
1728 | if (ctxnhg && ctxnhg->nexthop) { | |
1729 | ||
1730 | for (ALL_NEXTHOPS_PTR(ctxnhg, nexthop)) { | |
1731 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1732 | break; | |
1733 | } | |
1734 | ||
1735 | /* If no installed backups, we're done */ | |
1736 | if (nexthop == NULL) | |
1737 | goto done; | |
1738 | ||
1739 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1740 | zlog_debug( |
1741 | "%s(%u):%pRN update_from_ctx(): changed %s, adding new backup fib nhg", | |
1742 | VRF_LOGNAME(vrf), re->vrf_id, rn, | |
1743 | (changed_p ? "true" : "false")); | |
9959f1da MS |
1744 | |
1745 | copy_nexthops(&(re->fib_backup_ng.nexthop), ctxnhg->nexthop, | |
1746 | NULL); | |
1747 | } | |
1748 | ||
941e261c | 1749 | done: |
9959f1da | 1750 | |
efe6c026 | 1751 | return changed_p; |
78bf56b0 MS |
1752 | } |
1753 | ||
e5ac2adf | 1754 | /* |
fad4d69c MS |
1755 | * Helper to locate a zebra route-node from a dplane context. This is used |
1756 | * when processing dplane results, e.g. Note well: the route-node is returned | |
1757 | * with a ref held - route_unlock_node() must be called eventually. | |
e5ac2adf | 1758 | */ |
a7704e1b | 1759 | struct route_node *rib_find_rn_from_ctx(const struct zebra_dplane_ctx *ctx) |
e5ac2adf MS |
1760 | { |
1761 | struct route_table *table = NULL; | |
1762 | struct route_node *rn = NULL; | |
e5ac2adf MS |
1763 | const struct prefix *dest_pfx, *src_pfx; |
1764 | ||
1765 | /* Locate rn and re(s) from ctx */ | |
1766 | ||
c7c0b007 SW |
1767 | table = zebra_vrf_lookup_table_with_table_id( |
1768 | dplane_ctx_get_afi(ctx), dplane_ctx_get_safi(ctx), | |
1769 | dplane_ctx_get_vrf(ctx), dplane_ctx_get_table(ctx)); | |
e5ac2adf MS |
1770 | if (table == NULL) { |
1771 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 JU |
1772 | zlog_debug( |
1773 | "Failed to find route for ctx: no table for afi %d, safi %d, vrf %s(%u)", | |
1774 | dplane_ctx_get_afi(ctx), | |
1775 | dplane_ctx_get_safi(ctx), | |
1776 | vrf_id_to_name(dplane_ctx_get_vrf(ctx)), | |
1777 | dplane_ctx_get_vrf(ctx)); | |
e5ac2adf MS |
1778 | } |
1779 | goto done; | |
1780 | } | |
1781 | ||
fad4d69c MS |
1782 | dest_pfx = dplane_ctx_get_dest(ctx); |
1783 | src_pfx = dplane_ctx_get_src(ctx); | |
1784 | ||
1785 | rn = srcdest_rnode_get(table, dest_pfx, | |
1786 | src_pfx ? (struct prefix_ipv6 *)src_pfx : NULL); | |
1787 | ||
1788 | done: | |
1789 | return rn; | |
1790 | } | |
1791 | ||
1792 | ||
97f5b441 | 1793 | |
fad4d69c MS |
1794 | /* |
1795 | * Route-update results processing after async dataplane update. | |
1796 | */ | |
1797 | static void rib_process_result(struct zebra_dplane_ctx *ctx) | |
1798 | { | |
1799 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1800 | struct vrf *vrf; |
fad4d69c MS |
1801 | struct route_node *rn = NULL; |
1802 | struct route_entry *re = NULL, *old_re = NULL, *rib; | |
1803 | bool is_update = false; | |
fad4d69c MS |
1804 | enum dplane_op_e op; |
1805 | enum zebra_dplane_result status; | |
fad4d69c | 1806 | uint32_t seq; |
9db35a5e | 1807 | rib_dest_t *dest; |
efe6c026 | 1808 | bool fib_changed = false; |
77b38a4a | 1809 | struct rib_table_info *info; |
f99f1ff5 | 1810 | bool rt_delete = false; |
97f5b441 | 1811 | |
fad4d69c | 1812 | zvrf = vrf_info_lookup(dplane_ctx_get_vrf(ctx)); |
bd47f3a3 | 1813 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
e5ac2adf | 1814 | |
fad4d69c MS |
1815 | /* Locate rn and re(s) from ctx */ |
1816 | rn = rib_find_rn_from_ctx(ctx); | |
e5ac2adf MS |
1817 | if (rn == NULL) { |
1818 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 | 1819 | zlog_debug( |
69a2d597 DS |
1820 | "Failed to process dplane results: no route for %s(%u):%pRN", |
1821 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), rn); | |
e5ac2adf MS |
1822 | } |
1823 | goto done; | |
1824 | } | |
1825 | ||
9db35a5e | 1826 | dest = rib_dest_from_rnode(rn); |
77b38a4a | 1827 | info = srcdest_rnode_table_info(rn); |
e5ac2adf MS |
1828 | |
1829 | op = dplane_ctx_get_op(ctx); | |
1830 | status = dplane_ctx_get_status(ctx); | |
1831 | ||
c831033f | 1832 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1833 | zlog_debug( |
69a2d597 | 1834 | "%s(%u:%u):%pRN Processing dplane result ctx %p, op %s result %s", |
c2c02b76 | 1835 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 DS |
1836 | dplane_ctx_get_table(ctx), rn, ctx, dplane_op2str(op), |
1837 | dplane_res2str(status)); | |
e5ac2adf | 1838 | |
e5ac2adf MS |
1839 | /* |
1840 | * Update is a bit of a special case, where we may have both old and new | |
1841 | * routes to post-process. | |
1842 | */ | |
1843 | is_update = dplane_ctx_is_update(ctx); | |
1844 | ||
1845 | /* | |
1846 | * Take a pass through the routes, look for matches with the context | |
1847 | * info. | |
1848 | */ | |
1849 | RNODE_FOREACH_RE(rn, rib) { | |
1850 | ||
1851 | if (re == NULL) { | |
5709131c | 1852 | if (rib_route_match_ctx(rib, ctx, false)) |
e5ac2adf | 1853 | re = rib; |
e5ac2adf MS |
1854 | } |
1855 | ||
1856 | /* Check for old route match */ | |
1857 | if (is_update && (old_re == NULL)) { | |
5709131c | 1858 | if (rib_route_match_ctx(rib, ctx, true /*is_update*/)) |
e5ac2adf | 1859 | old_re = rib; |
e5ac2adf MS |
1860 | } |
1861 | ||
1862 | /* Have we found the routes we need to work on? */ | |
5709131c | 1863 | if (re && ((!is_update || old_re))) |
e5ac2adf | 1864 | break; |
e5ac2adf MS |
1865 | } |
1866 | ||
699dae23 DS |
1867 | seq = dplane_ctx_get_seq(ctx); |
1868 | ||
e5ac2adf MS |
1869 | /* |
1870 | * Check sequence number(s) to detect stale results before continuing | |
1871 | */ | |
60f98b23 | 1872 | if (re) { |
699dae23 | 1873 | if (re->dplane_sequence != seq) { |
60f98b23 | 1874 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1875 | zlog_debug( |
69a2d597 | 1876 | "%s(%u):%pRN Stale dplane result for re %p", |
bd47f3a3 | 1877 | VRF_LOGNAME(vrf), |
69a2d597 | 1878 | dplane_ctx_get_vrf(ctx), rn, re); |
e4876266 DS |
1879 | } else { |
1880 | if (!zrouter.asic_offloaded || | |
1881 | (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED) || | |
1882 | CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED))) | |
1883 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); | |
1884 | } | |
e5ac2adf MS |
1885 | } |
1886 | ||
60f98b23 DS |
1887 | if (old_re) { |
1888 | if (old_re->dplane_sequence != dplane_ctx_get_old_seq(ctx)) { | |
1889 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 1890 | zlog_debug( |
69a2d597 | 1891 | "%s(%u:%u):%pRN Stale dplane result for old_re %p", |
bd47f3a3 | 1892 | VRF_LOGNAME(vrf), |
c2c02b76 | 1893 | dplane_ctx_get_vrf(ctx), old_re->table, |
69a2d597 | 1894 | rn, old_re); |
60f98b23 | 1895 | } else |
9ef0c6ba | 1896 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_QUEUED); |
e5ac2adf MS |
1897 | } |
1898 | ||
12e7fe3a | 1899 | switch (op) { |
12e7fe3a DS |
1900 | case DPLANE_OP_ROUTE_INSTALL: |
1901 | case DPLANE_OP_ROUTE_UPDATE: | |
1902 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
677c1dd5 DS |
1903 | if (re) { |
1904 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
1905 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
1906 | } | |
b9f0e5ee DS |
1907 | /* |
1908 | * On an update operation from the same route type | |
1909 | * context retrieval currently has no way to know | |
1910 | * which was the old and which was the new. | |
1911 | * So don't unset our flags that we just set. | |
1912 | * We know redistribution is ok because the | |
1913 | * old_re in this case is used for nothing | |
1914 | * more than knowing whom to contact if necessary. | |
1915 | */ | |
1916 | if (old_re && old_re != re) { | |
677c1dd5 DS |
1917 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
1918 | UNSET_FLAG(old_re->status, | |
1919 | ROUTE_ENTRY_INSTALLED); | |
1920 | } | |
f183e380 | 1921 | |
78bf56b0 | 1922 | /* Update zebra route based on the results in |
941e261c | 1923 | * the context struct. |
78bf56b0 | 1924 | */ |
941e261c | 1925 | if (re) { |
efe6c026 MS |
1926 | fib_changed = |
1927 | rib_update_re_from_ctx(re, rn, ctx); | |
1928 | ||
1929 | if (!fib_changed) { | |
1930 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 1931 | zlog_debug( |
69a2d597 | 1932 | "%s(%u:%u):%pRN no fib change for re", |
bd47f3a3 JU |
1933 | VRF_LOGNAME(vrf), |
1934 | dplane_ctx_get_vrf(ctx), | |
c2c02b76 DS |
1935 | dplane_ctx_get_table( |
1936 | ctx), | |
69a2d597 | 1937 | rn); |
12e7fe3a DS |
1938 | } |
1939 | ||
9db35a5e MS |
1940 | /* Redistribute if this is the selected re */ |
1941 | if (dest && re == dest->selected_fib) | |
ee78ed68 | 1942 | redistribute_update(rn, re, old_re); |
f183e380 MS |
1943 | } |
1944 | ||
3cdba47a DS |
1945 | /* |
1946 | * System routes are weird in that they | |
1947 | * allow multiple to be installed that match | |
1948 | * to the same prefix, so after we get the | |
1949 | * result we need to clean them up so that | |
1950 | * we can actually use them. | |
1951 | */ | |
1952 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
1953 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
1954 | zebra_rib_fixup_system(rn); | |
1955 | ||
f4c6e2a8 | 1956 | if (zvrf) |
12e7fe3a | 1957 | zvrf->installs++; |
f183e380 | 1958 | |
12e7fe3a | 1959 | /* Notify route owner */ |
e4876266 DS |
1960 | if (zebra_router_notify_on_ack()) |
1961 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_INSTALLED); | |
1962 | else { | |
1963 | if (re) { | |
1964 | if (CHECK_FLAG(re->flags, | |
1965 | ZEBRA_FLAG_OFFLOADED)) | |
1966 | zsend_route_notify_owner_ctx( | |
1967 | ctx, | |
1968 | ZAPI_ROUTE_INSTALLED); | |
1969 | if (CHECK_FLAG( | |
1970 | re->flags, | |
1971 | ZEBRA_FLAG_OFFLOAD_FAILED)) | |
1972 | zsend_route_notify_owner_ctx( | |
1973 | ctx, | |
1974 | ZAPI_ROUTE_FAIL_INSTALL); | |
1975 | } | |
1976 | } | |
12e7fe3a | 1977 | } else { |
7a230a9d | 1978 | if (re) { |
677c1dd5 | 1979 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); |
7a230a9d DS |
1980 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
1981 | } if (old_re) | |
677c1dd5 DS |
1982 | SET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
1983 | if (re) | |
a7704e1b DS |
1984 | zsend_route_notify_owner( |
1985 | rn, re, ZAPI_ROUTE_FAIL_INSTALL, | |
1986 | info->afi, info->safi); | |
97f5b441 | 1987 | |
69a2d597 | 1988 | zlog_warn("%s(%u:%u):%pRN: Route install failed", |
bd47f3a3 | 1989 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 | 1990 | dplane_ctx_get_table(ctx), rn); |
12e7fe3a DS |
1991 | } |
1992 | break; | |
1993 | case DPLANE_OP_ROUTE_DELETE: | |
f99f1ff5 | 1994 | rt_delete = true; |
677c1dd5 DS |
1995 | if (re) |
1996 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
1997 | /* |
1998 | * In the delete case, the zebra core datastructs were | |
1999 | * updated (or removed) at the time the delete was issued, | |
2000 | * so we're just notifying the route owner. | |
e5ac2adf | 2001 | */ |
12e7fe3a | 2002 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
677c1dd5 DS |
2003 | if (re) { |
2004 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2005 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
2006 | } | |
12e7fe3a | 2007 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_REMOVED); |
e5ac2adf | 2008 | |
12e7fe3a DS |
2009 | if (zvrf) |
2010 | zvrf->removals++; | |
2011 | } else { | |
677c1dd5 DS |
2012 | if (re) |
2013 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
2014 | zsend_route_notify_owner_ctx(ctx, |
2015 | ZAPI_ROUTE_REMOVE_FAIL); | |
e5ac2adf | 2016 | |
69a2d597 | 2017 | zlog_warn("%s(%u:%u):%pRN: Route Deletion failure", |
bd47f3a3 | 2018 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 | 2019 | dplane_ctx_get_table(ctx), rn); |
12e7fe3a | 2020 | } |
3cdba47a DS |
2021 | |
2022 | /* | |
2023 | * System routes are weird in that they | |
2024 | * allow multiple to be installed that match | |
2025 | * to the same prefix, so after we get the | |
2026 | * result we need to clean them up so that | |
2027 | * we can actually use them. | |
2028 | */ | |
2029 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
2030 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
2031 | zebra_rib_fixup_system(rn); | |
12e7fe3a | 2032 | break; |
d37f4d6c MS |
2033 | default: |
2034 | break; | |
e5ac2adf | 2035 | } |
699dae23 | 2036 | |
f99f1ff5 | 2037 | zebra_rib_evaluate_rn_nexthops(rn, seq, rt_delete); |
a1494c25 | 2038 | zebra_rib_evaluate_mpls(rn); |
e5ac2adf MS |
2039 | done: |
2040 | ||
5f27bcba DS |
2041 | if (rn) |
2042 | route_unlock_node(rn); | |
2043 | ||
e5ac2adf MS |
2044 | /* Return context to dataplane module */ |
2045 | dplane_ctx_fini(&ctx); | |
2046 | } | |
2047 | ||
9959f1da MS |
2048 | /* |
2049 | * Count installed/FIB nexthops | |
2050 | */ | |
2051 | static int rib_count_installed_nh(struct route_entry *re) | |
2052 | { | |
2053 | int count = 0; | |
2054 | struct nexthop *nexthop; | |
2055 | struct nexthop_group *nhg; | |
2056 | ||
2057 | nhg = rib_get_fib_nhg(re); | |
2058 | ||
2059 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2060 | /* The meaningful flag depends on where the installed | |
2061 | * nexthops reside. | |
2062 | */ | |
43a9f66c | 2063 | if (nhg == &(re->fib_ng)) { |
9959f1da MS |
2064 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) |
2065 | count++; | |
2066 | } else { | |
2067 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
2068 | count++; | |
2069 | } | |
2070 | } | |
2071 | ||
43a9f66c MS |
2072 | nhg = rib_get_fib_backup_nhg(re); |
2073 | if (nhg) { | |
2074 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2075 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2076 | count++; | |
2077 | } | |
9959f1da MS |
2078 | } |
2079 | ||
2080 | return count; | |
2081 | } | |
2082 | ||
54818e3b MS |
2083 | /* |
2084 | * Handle notification from async dataplane: the dataplane has detected | |
2085 | * some change to a route, and notifies zebra so that the control plane | |
2086 | * can reflect that change. | |
2087 | */ | |
2088 | static void rib_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2089 | { | |
2090 | struct route_node *rn = NULL; | |
efe6c026 | 2091 | struct route_entry *re = NULL; |
bd47f3a3 | 2092 | struct vrf *vrf; |
efe6c026 | 2093 | struct nexthop *nexthop; |
941e261c | 2094 | rib_dest_t *dest; |
efe6c026 | 2095 | bool fib_changed = false; |
941e261c | 2096 | bool debug_p = IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_RIB; |
efe6c026 | 2097 | int start_count, end_count; |
898b4a6d | 2098 | |
bd47f3a3 | 2099 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
54818e3b | 2100 | |
54818e3b MS |
2101 | /* Locate rn and re(s) from ctx */ |
2102 | rn = rib_find_rn_from_ctx(ctx); | |
2103 | if (rn == NULL) { | |
941e261c | 2104 | if (debug_p) { |
bd47f3a3 | 2105 | zlog_debug( |
898b4a6d | 2106 | "Failed to process dplane notification: no routes for %s(%u:%u):%pRN", |
bd47f3a3 | 2107 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2108 | dplane_ctx_get_table(ctx), rn); |
54818e3b MS |
2109 | } |
2110 | goto done; | |
2111 | } | |
2112 | ||
941e261c | 2113 | dest = rib_dest_from_rnode(rn); |
54818e3b | 2114 | |
efe6c026 | 2115 | if (debug_p) |
898b4a6d | 2116 | zlog_debug("%s(%u:%u):%pRN Processing dplane notif ctx %p", |
c2c02b76 | 2117 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2118 | dplane_ctx_get_table(ctx), rn, ctx); |
54818e3b MS |
2119 | |
2120 | /* | |
2121 | * Take a pass through the routes, look for matches with the context | |
2122 | * info. | |
2123 | */ | |
efe6c026 MS |
2124 | RNODE_FOREACH_RE(rn, re) { |
2125 | if (rib_route_match_ctx(re, ctx, false /*!update*/)) | |
54818e3b MS |
2126 | break; |
2127 | } | |
2128 | ||
2129 | /* No match? Nothing we can do */ | |
2130 | if (re == NULL) { | |
941e261c | 2131 | if (debug_p) |
bd47f3a3 | 2132 | zlog_debug( |
898b4a6d | 2133 | "%s(%u:%u):%pRN Unable to process dplane notification: no entry for type %s", |
bd47f3a3 | 2134 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2135 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 | 2136 | zebra_route_string(dplane_ctx_get_type(ctx))); |
54818e3b MS |
2137 | |
2138 | goto done; | |
2139 | } | |
2140 | ||
272e8903 | 2141 | /* Ensure we clear the QUEUED flag */ |
e4876266 DS |
2142 | if (!zrouter.asic_offloaded) |
2143 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); | |
272e8903 | 2144 | |
4c0b5436 MS |
2145 | /* Is this a notification that ... matters? We mostly care about |
2146 | * the route that is currently selected for installation; we may also | |
2147 | * get an un-install notification, and handle that too. | |
941e261c MS |
2148 | */ |
2149 | if (re != dest->selected_fib) { | |
4c0b5436 MS |
2150 | /* |
2151 | * If we need to, clean up after a delete that was part of | |
2152 | * an update operation. | |
941e261c | 2153 | */ |
4c0b5436 MS |
2154 | end_count = 0; |
2155 | for (ALL_NEXTHOPS_PTR(dplane_ctx_get_ng(ctx), nexthop)) { | |
2156 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2157 | end_count++; | |
2158 | } | |
2159 | ||
2160 | /* If no nexthops or none installed, ensure that this re | |
2161 | * gets its 'installed' flag cleared. | |
2162 | */ | |
2163 | if (end_count == 0) { | |
2164 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) | |
2165 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2166 | if (debug_p) | |
bd47f3a3 | 2167 | zlog_debug( |
898b4a6d | 2168 | "%s(%u:%u):%pRN dplane notif, uninstalled type %s route", |
bd47f3a3 | 2169 | VRF_LOGNAME(vrf), |
c2c02b76 | 2170 | dplane_ctx_get_vrf(ctx), |
898b4a6d | 2171 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 JU |
2172 | zebra_route_string( |
2173 | dplane_ctx_get_type(ctx))); | |
4c0b5436 MS |
2174 | } else { |
2175 | /* At least report on the event. */ | |
2176 | if (debug_p) | |
bd47f3a3 | 2177 | zlog_debug( |
898b4a6d | 2178 | "%s(%u:%u):%pRN dplane notif, but type %s not selected_fib", |
bd47f3a3 | 2179 | VRF_LOGNAME(vrf), |
c2c02b76 | 2180 | dplane_ctx_get_vrf(ctx), |
898b4a6d | 2181 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 JU |
2182 | zebra_route_string( |
2183 | dplane_ctx_get_type(ctx))); | |
4c0b5436 | 2184 | } |
941e261c MS |
2185 | goto done; |
2186 | } | |
2187 | ||
efe6c026 MS |
2188 | /* We'll want to determine whether the installation status of the |
2189 | * route has changed: we'll check the status before processing, | |
2190 | * and then again if there's been a change. | |
2191 | */ | |
2192 | start_count = 0; | |
1c30d64b | 2193 | |
9959f1da MS |
2194 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) |
2195 | start_count = rib_count_installed_nh(re); | |
efe6c026 | 2196 | |
54818e3b MS |
2197 | /* Update zebra's nexthop FIB flags based on the context struct's |
2198 | * nexthops. | |
2199 | */ | |
efe6c026 | 2200 | fib_changed = rib_update_re_from_ctx(re, rn, ctx); |
54818e3b | 2201 | |
efe6c026 MS |
2202 | if (!fib_changed) { |
2203 | if (debug_p) | |
bd47f3a3 | 2204 | zlog_debug( |
898b4a6d | 2205 | "%s(%u:%u):%pRN dplane notification: rib_update returns FALSE", |
bd47f3a3 | 2206 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2207 | dplane_ctx_get_table(ctx), rn); |
54818e3b MS |
2208 | } |
2209 | ||
188a00e0 MS |
2210 | /* |
2211 | * Perform follow-up work if the actual status of the prefix | |
efe6c026 | 2212 | * changed. |
941e261c | 2213 | */ |
9959f1da | 2214 | end_count = rib_count_installed_nh(re); |
941e261c | 2215 | |
188a00e0 MS |
2216 | /* Various fib transitions: changed nexthops; from installed to |
2217 | * not-installed; or not-installed to installed. | |
efe6c026 | 2218 | */ |
188a00e0 | 2219 | if (start_count > 0 && end_count > 0) { |
11260e70 | 2220 | if (debug_p) |
bd47f3a3 | 2221 | zlog_debug( |
898b4a6d | 2222 | "%s(%u:%u):%pRN applied nexthop changes from dplane notification", |
bd47f3a3 | 2223 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2224 | dplane_ctx_get_table(ctx), rn); |
188a00e0 MS |
2225 | |
2226 | /* Changed nexthops - update kernel/others */ | |
2227 | dplane_route_notif_update(rn, re, | |
2228 | DPLANE_OP_ROUTE_UPDATE, ctx); | |
2229 | ||
2230 | } else if (start_count == 0 && end_count > 0) { | |
efe6c026 | 2231 | if (debug_p) |
bd47f3a3 | 2232 | zlog_debug( |
898b4a6d | 2233 | "%s(%u:%u):%pRN installed transition from dplane notification", |
bd47f3a3 | 2234 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2235 | dplane_ctx_get_table(ctx), rn); |
efe6c026 MS |
2236 | |
2237 | /* We expect this to be the selected route, so we want | |
272e8903 | 2238 | * to tell others about this transition. |
efe6c026 MS |
2239 | */ |
2240 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2241 | ||
188a00e0 | 2242 | /* Changed nexthops - update kernel/others */ |
9959f1da | 2243 | dplane_route_notif_update(rn, re, DPLANE_OP_ROUTE_UPDATE, ctx); |
188a00e0 | 2244 | |
efe6c026 | 2245 | /* Redistribute, lsp, and nht update */ |
ee78ed68 | 2246 | redistribute_update(rn, re, NULL); |
efe6c026 | 2247 | |
efe6c026 MS |
2248 | } else if (start_count > 0 && end_count == 0) { |
2249 | if (debug_p) | |
bd47f3a3 | 2250 | zlog_debug( |
898b4a6d | 2251 | "%s(%u:%u):%pRN un-installed transition from dplane notification", |
bd47f3a3 | 2252 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2253 | dplane_ctx_get_table(ctx), rn); |
efe6c026 MS |
2254 | |
2255 | /* Transition from _something_ installed to _nothing_ | |
2256 | * installed. | |
2257 | */ | |
2258 | /* We expect this to be the selected route, so we want | |
2259 | * to tell others about this transistion. | |
2260 | */ | |
2261 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2262 | ||
188a00e0 MS |
2263 | /* Changed nexthops - update kernel/others */ |
2264 | dplane_route_notif_update(rn, re, DPLANE_OP_ROUTE_DELETE, ctx); | |
2265 | ||
efe6c026 | 2266 | /* Redistribute, lsp, and nht update */ |
b3a9fca1 | 2267 | redistribute_delete(rn, re, NULL); |
9287b4c5 | 2268 | } |
efe6c026 | 2269 | |
9287b4c5 | 2270 | /* Make any changes visible for lsp and nexthop-tracking processing */ |
f99f1ff5 SP |
2271 | zebra_rib_evaluate_rn_nexthops(rn, zebra_router_get_next_sequence(), |
2272 | false); | |
efe6c026 | 2273 | |
9287b4c5 | 2274 | zebra_rib_evaluate_mpls(rn); |
941e261c | 2275 | |
54818e3b | 2276 | done: |
941e261c MS |
2277 | if (rn) |
2278 | route_unlock_node(rn); | |
2279 | ||
54818e3b MS |
2280 | /* Return context to dataplane module */ |
2281 | dplane_ctx_fini(&ctx); | |
2282 | } | |
2283 | ||
32367e7a MS |
2284 | /* |
2285 | * Process a node from the EVPN/VXLAN subqueue. | |
2286 | */ | |
2287 | static void process_subq_evpn(struct listnode *lnode) | |
2288 | { | |
2289 | struct wq_evpn_wrapper *w; | |
2290 | ||
2291 | /* In general, the list node points to a wrapper object | |
2292 | * holding the info necessary to make some update. | |
2293 | */ | |
2294 | w = listgetdata(lnode); | |
2295 | if (!w) | |
2296 | return; | |
2297 | ||
2298 | if (w->type == WQ_EVPN_WRAPPER_TYPE_VRFROUTE) { | |
2299 | if (w->add_p) | |
7f7e49d1 | 2300 | zebra_vxlan_evpn_vrf_route_add(w->vrf_id, &w->macaddr, |
32367e7a MS |
2301 | &w->ip, &w->prefix); |
2302 | else | |
2303 | zebra_vxlan_evpn_vrf_route_del(w->vrf_id, &w->ip, | |
2304 | &w->prefix); | |
2305 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_ES) { | |
2306 | if (w->add_p) | |
2307 | zebra_evpn_remote_es_add(&w->esi, w->ip.ipaddr_v4, | |
2308 | w->esr_rxed, w->df_alg, | |
2309 | w->df_pref); | |
2310 | else | |
2311 | zebra_evpn_remote_es_del(&w->esi, w->ip.ipaddr_v4); | |
7f7e49d1 MS |
2312 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_MACIP) { |
2313 | uint16_t ipa_len = 0; | |
2314 | ||
2315 | if (w->ip.ipa_type == IPADDR_V4) | |
2316 | ipa_len = IPV4_MAX_BYTELEN; | |
2317 | else if (w->ip.ipa_type == IPADDR_V6) | |
2318 | ipa_len = IPV6_MAX_BYTELEN; | |
2319 | ||
2320 | if (w->add_p) | |
2321 | zebra_evpn_rem_macip_add(w->vni, &w->macaddr, ipa_len, | |
2322 | &w->ip, w->flags, w->seq, | |
2323 | w->vtep_ip, &w->esi); | |
2324 | else | |
2325 | zebra_evpn_rem_macip_del(w->vni, &w->macaddr, ipa_len, | |
2326 | &w->ip, w->vtep_ip); | |
7e5b0b2b MS |
2327 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_VTEP) { |
2328 | if (w->add_p) | |
2329 | zebra_vxlan_remote_vtep_add(w->vrf_id, w->vni, | |
2330 | w->vtep_ip, w->flags); | |
2331 | else | |
2332 | zebra_vxlan_remote_vtep_del(w->vrf_id, w->vni, | |
2333 | w->vtep_ip); | |
32367e7a MS |
2334 | } |
2335 | ||
7e5b0b2b | 2336 | |
32367e7a MS |
2337 | XFREE(MTYPE_WQ_WRAPPER, w); |
2338 | } | |
2339 | ||
04bec7b2 MS |
2340 | /* |
2341 | * Process the nexthop-group workqueue subqueue | |
2342 | */ | |
e22e8001 | 2343 | static void process_subq_nhg(struct listnode *lnode) |
e96f9203 | 2344 | { |
04bec7b2 MS |
2345 | struct nhg_ctx *ctx; |
2346 | struct nhg_hash_entry *nhe, *newnhe; | |
2347 | struct wq_nhg_wrapper *w; | |
e22e8001 | 2348 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; |
5110a0c6 | 2349 | |
04bec7b2 | 2350 | w = listgetdata(lnode); |
e22e8001 | 2351 | |
04bec7b2 | 2352 | if (!w) |
e22e8001 SW |
2353 | return; |
2354 | ||
04bec7b2 MS |
2355 | /* Two types of object - an update from the local kernel, or |
2356 | * an nhg update from a daemon. | |
2357 | */ | |
2358 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) { | |
2359 | ctx = w->u.ctx; | |
2360 | ||
2361 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2362 | zlog_debug( | |
2363 | "NHG Context id=%u dequeued from sub-queue %u", | |
2364 | ctx->id, qindex); | |
2365 | ||
2366 | ||
2367 | /* Process nexthop group updates coming 'up' from the OS */ | |
2368 | nhg_ctx_process(ctx); | |
e22e8001 | 2369 | |
04bec7b2 MS |
2370 | } else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) { |
2371 | nhe = w->u.nhe; | |
2372 | ||
2373 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2374 | zlog_debug("NHG %u dequeued from sub-queue %u", | |
2375 | nhe->id, qindex); | |
2376 | ||
2377 | /* Process incoming nhg update, probably from a proto daemon */ | |
2378 | newnhe = zebra_nhg_proto_add(nhe->id, nhe->type, | |
2379 | nhe->zapi_instance, | |
32367e7a | 2380 | nhe->zapi_session, &nhe->nhg, 0); |
04bec7b2 MS |
2381 | |
2382 | /* Report error to daemon via ZAPI */ | |
2383 | if (newnhe == NULL) | |
2384 | zsend_nhg_notify(nhe->type, nhe->zapi_instance, | |
2385 | nhe->zapi_session, nhe->id, | |
2386 | ZAPI_NHG_FAIL_INSTALL); | |
2387 | ||
2388 | /* Free temp nhe - we own that memory. */ | |
2389 | zebra_nhg_free(nhe); | |
2390 | } | |
e22e8001 | 2391 | |
32367e7a | 2392 | XFREE(MTYPE_WQ_WRAPPER, w); |
e22e8001 SW |
2393 | } |
2394 | ||
2395 | static void process_subq_route(struct listnode *lnode, uint8_t qindex) | |
2396 | { | |
2397 | struct route_node *rnode = NULL; | |
2398 | rib_dest_t *dest = NULL; | |
2399 | struct zebra_vrf *zvrf = NULL; | |
5110a0c6 | 2400 | |
d62a17ae | 2401 | rnode = listgetdata(lnode); |
2402 | dest = rib_dest_from_rnode(rnode); | |
c2c02b76 DS |
2403 | assert(dest); |
2404 | ||
2405 | zvrf = rib_dest_vrf(dest); | |
41ec9222 | 2406 | |
d62a17ae | 2407 | rib_process(rnode); |
5110a0c6 | 2408 | |
d62a17ae | 2409 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
7e26b9d4 | 2410 | struct route_entry *re = NULL; |
efe6c026 | 2411 | |
7e26b9d4 DS |
2412 | /* |
2413 | * rib_process may have freed the dest | |
2414 | * as part of the garbage collection. Let's | |
2415 | * prevent stupidity from happening. | |
2416 | */ | |
2417 | dest = rib_dest_from_rnode(rnode); | |
2418 | if (dest) | |
2419 | re = re_list_first(&dest->routes); | |
2420 | ||
e658173a | 2421 | zlog_debug("%s(%u:%u):%pRN rn %p dequeued from sub-queue %u", |
04bec7b2 | 2422 | zvrf_name(zvrf), zvrf_id(zvrf), re ? re->table : 0, |
e658173a | 2423 | rnode, rnode, qindex); |
d62a17ae | 2424 | } |
41ec9222 | 2425 | |
d62a17ae | 2426 | if (rnode->info) |
2427 | UNSET_FLAG(rib_dest_from_rnode(rnode)->flags, | |
2428 | RIB_ROUTE_QUEUED(qindex)); | |
9fd92e3c | 2429 | |
d62a17ae | 2430 | route_unlock_node(rnode); |
e22e8001 SW |
2431 | } |
2432 | ||
32367e7a MS |
2433 | /* |
2434 | * Examine the specified subqueue; process one entry and return 1 if | |
2435 | * there is a node, return 0 otherwise. | |
e22e8001 SW |
2436 | */ |
2437 | static unsigned int process_subq(struct list *subq, uint8_t qindex) | |
2438 | { | |
2439 | struct listnode *lnode = listhead(subq); | |
2440 | ||
2441 | if (!lnode) | |
2442 | return 0; | |
2443 | ||
32367e7a MS |
2444 | if (qindex == META_QUEUE_EVPN) |
2445 | process_subq_evpn(lnode); | |
2446 | else if (qindex == route_info[ZEBRA_ROUTE_NHG].meta_q_map) | |
e22e8001 SW |
2447 | process_subq_nhg(lnode); |
2448 | else | |
2449 | process_subq_route(lnode, qindex); | |
2450 | ||
d62a17ae | 2451 | list_delete_node(subq, lnode); |
e22e8001 | 2452 | |
d62a17ae | 2453 | return 1; |
e96f9203 DO |
2454 | } |
2455 | ||
32367e7a | 2456 | /* Dispatch the meta queue by picking and processing the next node from |
d62a17ae | 2457 | * a non-empty sub-queue with lowest priority. wq is equal to zebra->ribq and |
04bec7b2 | 2458 | * data is pointed to the meta queue structure. |
e96f9203 | 2459 | */ |
d62a17ae | 2460 | static wq_item_status meta_queue_process(struct work_queue *dummy, void *data) |
e96f9203 | 2461 | { |
d62a17ae | 2462 | struct meta_queue *mq = data; |
2463 | unsigned i; | |
91f16812 MS |
2464 | uint32_t queue_len, queue_limit; |
2465 | ||
2466 | /* Ensure there's room for more dataplane updates */ | |
2467 | queue_limit = dplane_get_in_queue_limit(); | |
2468 | queue_len = dplane_get_in_queue_len(); | |
2469 | if (queue_len > queue_limit) { | |
2470 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
8b962e77 MS |
2471 | zlog_debug("rib queue: dplane queue len %u, limit %u, retrying", |
2472 | queue_len, queue_limit); | |
91f16812 MS |
2473 | |
2474 | /* Ensure that the meta-queue is actually enqueued */ | |
489a9614 | 2475 | if (work_queue_empty(zrouter.ribq)) |
ea45a4e7 | 2476 | work_queue_add(zrouter.ribq, zrouter.mq); |
91f16812 MS |
2477 | |
2478 | return WQ_QUEUE_BLOCKED; | |
2479 | } | |
5110a0c6 | 2480 | |
d62a17ae | 2481 | for (i = 0; i < MQ_SIZE; i++) |
2482 | if (process_subq(mq->subq[i], i)) { | |
2483 | mq->size--; | |
2484 | break; | |
2485 | } | |
2486 | return mq->size ? WQ_REQUEUE : WQ_SUCCESS; | |
e96f9203 DO |
2487 | } |
2488 | ||
f52ed677 DS |
2489 | |
2490 | /* | |
2491 | * Look into the RN and queue it into the highest priority queue | |
2492 | * at this point in time for processing. | |
2493 | * | |
2494 | * We will enqueue a route node only once per invocation. | |
2495 | * | |
2496 | * There are two possibilities here that should be kept in mind. | |
2497 | * If the original invocation has not been pulled off for processing | |
2498 | * yet, A subsuquent invocation can have a route entry with a better | |
2499 | * meta queue index value and we can have a situation where | |
2500 | * we might have the same node enqueued 2 times. Not necessarily | |
2501 | * an optimal situation but it should be ok. | |
2502 | * | |
2503 | * The other possibility is that the original invocation has not | |
2504 | * been pulled off for processing yet, A subsusquent invocation | |
2505 | * doesn't have a route_entry with a better meta-queue and the | |
2506 | * original metaqueue index value will win and we'll end up with | |
2507 | * the route node enqueued once. | |
e96f9203 | 2508 | */ |
e22e8001 | 2509 | static int rib_meta_queue_add(struct meta_queue *mq, void *data) |
e96f9203 | 2510 | { |
e22e8001 | 2511 | struct route_node *rn = NULL; |
f52ed677 DS |
2512 | struct route_entry *re = NULL, *curr_re = NULL; |
2513 | uint8_t qindex = MQ_SIZE, curr_qindex = MQ_SIZE; | |
5110a0c6 | 2514 | |
e22e8001 SW |
2515 | rn = (struct route_node *)data; |
2516 | ||
f52ed677 DS |
2517 | RNODE_FOREACH_RE (rn, curr_re) { |
2518 | curr_qindex = route_info[curr_re->type].meta_q_map; | |
d62a17ae | 2519 | |
f52ed677 DS |
2520 | if (curr_qindex <= qindex) { |
2521 | re = curr_re; | |
2522 | qindex = curr_qindex; | |
d62a17ae | 2523 | } |
f52ed677 | 2524 | } |
5110a0c6 | 2525 | |
f52ed677 | 2526 | if (!re) |
e22e8001 | 2527 | return -1; |
5110a0c6 | 2528 | |
f52ed677 DS |
2529 | /* Invariant: at this point we always have rn->info set. */ |
2530 | if (CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
2531 | RIB_ROUTE_QUEUED(qindex))) { | |
d62a17ae | 2532 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
2533 | rnode_debug(rn, re->vrf_id, | |
f52ed677 | 2534 | "rn %p is already queued in sub-queue %u", |
d62a17ae | 2535 | (void *)rn, qindex); |
e22e8001 | 2536 | return -1; |
d62a17ae | 2537 | } |
f52ed677 DS |
2538 | |
2539 | SET_FLAG(rib_dest_from_rnode(rn)->flags, RIB_ROUTE_QUEUED(qindex)); | |
2540 | listnode_add(mq->subq[qindex], rn); | |
2541 | route_lock_node(rn); | |
2542 | mq->size++; | |
2543 | ||
2544 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2545 | rnode_debug(rn, re->vrf_id, "queued rn %p into sub-queue %u", | |
2546 | (void *)rn, qindex); | |
e22e8001 SW |
2547 | |
2548 | return 0; | |
4d38fdb4 | 2549 | } |
2550 | ||
04bec7b2 | 2551 | static int rib_meta_queue_nhg_ctx_add(struct meta_queue *mq, void *data) |
4d38fdb4 | 2552 | { |
e22e8001 SW |
2553 | struct nhg_ctx *ctx = NULL; |
2554 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; | |
04bec7b2 | 2555 | struct wq_nhg_wrapper *w; |
fc328ac9 | 2556 | |
e22e8001 SW |
2557 | ctx = (struct nhg_ctx *)data; |
2558 | ||
2559 | if (!ctx) | |
2560 | return -1; | |
4d38fdb4 | 2561 | |
32367e7a | 2562 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); |
04bec7b2 MS |
2563 | |
2564 | w->type = WQ_NHG_WRAPPER_TYPE_CTX; | |
2565 | w->u.ctx = ctx; | |
2566 | ||
2567 | listnode_add(mq->subq[qindex], w); | |
e22e8001 SW |
2568 | mq->size++; |
2569 | ||
2570 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2571 | zlog_debug("NHG Context id=%u queued into sub-queue %u", | |
2572 | ctx->id, qindex); | |
2573 | ||
2574 | return 0; | |
2575 | } | |
2576 | ||
04bec7b2 MS |
2577 | static int rib_meta_queue_nhg_add(struct meta_queue *mq, void *data) |
2578 | { | |
2579 | struct nhg_hash_entry *nhe = NULL; | |
2580 | uint8_t qindex = route_info[ZEBRA_ROUTE_NHG].meta_q_map; | |
2581 | struct wq_nhg_wrapper *w; | |
2582 | ||
2583 | nhe = (struct nhg_hash_entry *)data; | |
2584 | ||
2585 | if (!nhe) | |
2586 | return -1; | |
2587 | ||
32367e7a | 2588 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); |
04bec7b2 MS |
2589 | |
2590 | w->type = WQ_NHG_WRAPPER_TYPE_NHG; | |
2591 | w->u.nhe = nhe; | |
2592 | ||
2593 | listnode_add(mq->subq[qindex], w); | |
2594 | mq->size++; | |
2595 | ||
2596 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2597 | zlog_debug("NHG id=%u queued into sub-queue %u", | |
2598 | nhe->id, qindex); | |
2599 | ||
2600 | return 0; | |
2601 | } | |
2602 | ||
32367e7a MS |
2603 | static int rib_meta_queue_evpn_add(struct meta_queue *mq, void *data) |
2604 | { | |
2605 | listnode_add(mq->subq[META_QUEUE_EVPN], data); | |
2606 | mq->size++; | |
2607 | ||
2608 | return 0; | |
2609 | } | |
2610 | ||
e22e8001 SW |
2611 | static int mq_add_handler(void *data, |
2612 | int (*mq_add_func)(struct meta_queue *mq, void *data)) | |
2613 | { | |
489a9614 | 2614 | if (zrouter.ribq == NULL) { |
e914ccbe | 2615 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 2616 | "%s: work_queue does not exist!", __func__); |
e22e8001 | 2617 | return -1; |
d62a17ae | 2618 | } |
2619 | ||
2620 | /* | |
2621 | * The RIB queue should normally be either empty or holding the only | |
2622 | * work_queue_item element. In the latter case this element would | |
2623 | * hold a pointer to the meta queue structure, which must be used to | |
2624 | * actually queue the route nodes to process. So create the MQ | |
2625 | * holder, if necessary, then push the work into it in any case. | |
2626 | * This semantics was introduced after 0.99.9 release. | |
2627 | */ | |
489a9614 | 2628 | if (work_queue_empty(zrouter.ribq)) |
ea45a4e7 | 2629 | work_queue_add(zrouter.ribq, zrouter.mq); |
e96f9203 | 2630 | |
e22e8001 SW |
2631 | return mq_add_func(zrouter.mq, data); |
2632 | } | |
fc328ac9 | 2633 | |
e22e8001 SW |
2634 | /* Add route_node to work queue and schedule processing */ |
2635 | int rib_queue_add(struct route_node *rn) | |
2636 | { | |
2637 | assert(rn); | |
2638 | ||
2639 | /* Pointless to queue a route_node with no RIB entries to add or remove | |
2640 | */ | |
2641 | if (!rnode_to_ribs(rn)) { | |
c10e14e9 DS |
2642 | zlog_debug("%s: called for route_node (%p, %u) with no ribs", |
2643 | __func__, (void *)rn, route_node_get_lock_count(rn)); | |
e22e8001 SW |
2644 | zlog_backtrace(LOG_DEBUG); |
2645 | return -1; | |
2646 | } | |
2647 | ||
04bec7b2 | 2648 | return mq_add_handler(rn, rib_meta_queue_add); |
e22e8001 SW |
2649 | } |
2650 | ||
04bec7b2 MS |
2651 | /* |
2652 | * Enqueue incoming nhg info from OS for processing | |
2653 | */ | |
2654 | int rib_queue_nhg_ctx_add(struct nhg_ctx *ctx) | |
e22e8001 SW |
2655 | { |
2656 | assert(ctx); | |
2657 | ||
04bec7b2 MS |
2658 | return mq_add_handler(ctx, rib_meta_queue_nhg_ctx_add); |
2659 | } | |
2660 | ||
2661 | /* | |
2662 | * Enqueue incoming nhg from proto daemon for processing | |
2663 | */ | |
2664 | int rib_queue_nhe_add(struct nhg_hash_entry *nhe) | |
2665 | { | |
2666 | if (nhe == NULL) | |
2667 | return -1; | |
2668 | ||
2669 | return mq_add_handler(nhe, rib_meta_queue_nhg_add); | |
2670 | } | |
2671 | ||
32367e7a MS |
2672 | /* |
2673 | * Enqueue evpn route for processing | |
2674 | */ | |
2675 | int zebra_rib_queue_evpn_route_add(vrf_id_t vrf_id, const struct ethaddr *rmac, | |
2676 | const struct ipaddr *vtep_ip, | |
2677 | const struct prefix *host_prefix) | |
2678 | { | |
2679 | struct wq_evpn_wrapper *w; | |
2680 | ||
2681 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2682 | ||
2683 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
2684 | w->add_p = true; | |
2685 | w->vrf_id = vrf_id; | |
7f7e49d1 | 2686 | w->macaddr = *rmac; |
32367e7a MS |
2687 | w->ip = *vtep_ip; |
2688 | w->prefix = *host_prefix; | |
2689 | ||
2690 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2691 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
2692 | vrf_id, vtep_ip, host_prefix); | |
2693 | ||
2694 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2695 | } | |
2696 | ||
2697 | int zebra_rib_queue_evpn_route_del(vrf_id_t vrf_id, | |
2698 | const struct ipaddr *vtep_ip, | |
2699 | const struct prefix *host_prefix) | |
2700 | { | |
2701 | struct wq_evpn_wrapper *w; | |
2702 | ||
2703 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2704 | ||
2705 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
2706 | w->add_p = false; | |
2707 | w->vrf_id = vrf_id; | |
2708 | w->ip = *vtep_ip; | |
2709 | w->prefix = *host_prefix; | |
2710 | ||
2711 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2712 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
2713 | vrf_id, vtep_ip, host_prefix); | |
2714 | ||
2715 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2716 | } | |
2717 | ||
2718 | /* Enqueue EVPN remote ES for processing */ | |
2719 | int zebra_rib_queue_evpn_rem_es_add(const esi_t *esi, | |
2720 | const struct in_addr *vtep_ip, | |
2721 | bool esr_rxed, uint8_t df_alg, | |
2722 | uint16_t df_pref) | |
2723 | { | |
2724 | struct wq_evpn_wrapper *w; | |
2725 | char buf[ESI_STR_LEN]; | |
2726 | ||
2727 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2728 | ||
2729 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
2730 | w->add_p = true; | |
2731 | w->esi = *esi; | |
2732 | w->ip.ipa_type = IPADDR_V4; | |
2733 | w->ip.ipaddr_v4 = *vtep_ip; | |
2734 | w->esr_rxed = esr_rxed; | |
2735 | w->df_alg = df_alg; | |
2736 | w->df_pref = df_pref; | |
2737 | ||
2738 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2739 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
2740 | esi_to_str(esi, buf, sizeof(buf))); | |
2741 | ||
2742 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2743 | } | |
2744 | ||
2745 | int zebra_rib_queue_evpn_rem_es_del(const esi_t *esi, | |
2746 | const struct in_addr *vtep_ip) | |
2747 | { | |
2748 | struct wq_evpn_wrapper *w; | |
2749 | char buf[ESI_STR_LEN]; | |
2750 | ||
2751 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2752 | ||
2753 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
2754 | w->add_p = false; | |
2755 | w->esi = *esi; | |
2756 | w->ip.ipa_type = IPADDR_V4; | |
2757 | w->ip.ipaddr_v4 = *vtep_ip; | |
2758 | ||
2759 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
2760 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
2761 | esi_to_str(esi, buf, sizeof(buf)); | |
2762 | else | |
2763 | strlcpy(buf, "-", sizeof(buf)); | |
2764 | ||
2765 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
2766 | buf); | |
2767 | } | |
2768 | ||
2769 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2770 | } | |
2771 | ||
7f7e49d1 MS |
2772 | /* |
2773 | * Enqueue EVPN remote macip update for processing | |
2774 | */ | |
2775 | int zebra_rib_queue_evpn_rem_macip_add(vni_t vni, const struct ethaddr *macaddr, | |
2776 | const struct ipaddr *ipaddr, | |
2777 | uint8_t flags, uint32_t seq, | |
2778 | struct in_addr vtep_ip, const esi_t *esi) | |
2779 | { | |
2780 | struct wq_evpn_wrapper *w; | |
2781 | char buf[ESI_STR_LEN]; | |
2782 | ||
2783 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2784 | ||
2785 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
2786 | w->add_p = true; | |
2787 | w->vni = vni; | |
2788 | w->macaddr = *macaddr; | |
2789 | w->ip = *ipaddr; | |
2790 | w->flags = flags; | |
2791 | w->seq = seq; | |
2792 | w->vtep_ip = vtep_ip; | |
2793 | w->esi = *esi; | |
2794 | ||
2795 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
2796 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
2797 | esi_to_str(esi, buf, sizeof(buf)); | |
2798 | else | |
2799 | strlcpy(buf, "-", sizeof(buf)); | |
2800 | ||
2801 | zlog_debug("%s: mac %pEA, vtep %pI4, esi %s enqueued", __func__, | |
2802 | macaddr, &vtep_ip, buf); | |
2803 | } | |
2804 | ||
2805 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2806 | } | |
2807 | ||
2808 | int zebra_rib_queue_evpn_rem_macip_del(vni_t vni, const struct ethaddr *macaddr, | |
2809 | const struct ipaddr *ip, | |
2810 | struct in_addr vtep_ip) | |
2811 | { | |
2812 | struct wq_evpn_wrapper *w; | |
2813 | ||
2814 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2815 | ||
2816 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
2817 | w->add_p = false; | |
2818 | w->vni = vni; | |
2819 | w->macaddr = *macaddr; | |
2820 | w->ip = *ip; | |
2821 | w->vtep_ip = vtep_ip; | |
2822 | ||
2823 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2824 | zlog_debug("%s: mac %pEA, vtep %pI4 enqueued", __func__, | |
2825 | macaddr, &vtep_ip); | |
2826 | ||
2827 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2828 | } | |
2829 | ||
7e5b0b2b MS |
2830 | /* |
2831 | * Enqueue remote VTEP address for processing | |
2832 | */ | |
2833 | int zebra_rib_queue_evpn_rem_vtep_add(vrf_id_t vrf_id, vni_t vni, | |
2834 | struct in_addr vtep_ip, int flood_control) | |
2835 | { | |
2836 | struct wq_evpn_wrapper *w; | |
2837 | ||
2838 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2839 | ||
2840 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
2841 | w->add_p = true; | |
2842 | w->vrf_id = vrf_id; | |
2843 | w->vni = vni; | |
2844 | w->vtep_ip = vtep_ip; | |
2845 | w->flags = flood_control; | |
2846 | ||
2847 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2848 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
2849 | &vtep_ip); | |
2850 | ||
2851 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2852 | } | |
2853 | ||
2854 | int zebra_rib_queue_evpn_rem_vtep_del(vrf_id_t vrf_id, vni_t vni, | |
2855 | struct in_addr vtep_ip) | |
2856 | { | |
2857 | struct wq_evpn_wrapper *w; | |
2858 | ||
2859 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
2860 | ||
2861 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
2862 | w->add_p = false; | |
2863 | w->vrf_id = vrf_id; | |
2864 | w->vni = vni; | |
2865 | w->vtep_ip = vtep_ip; | |
2866 | ||
2867 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2868 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
2869 | &vtep_ip); | |
2870 | ||
2871 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
2872 | } | |
2873 | ||
32367e7a MS |
2874 | /* Clean up the EVPN meta-queue list */ |
2875 | static void evpn_meta_queue_free(struct list *l) | |
2876 | { | |
2877 | struct listnode *node; | |
2878 | struct wq_evpn_wrapper *w; | |
2879 | ||
2880 | /* Free the node wrapper object, and the struct it wraps */ | |
2881 | while ((node = listhead(l)) != NULL) { | |
2882 | w = node->data; | |
2883 | node->data = NULL; | |
2884 | ||
2885 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2886 | ||
2887 | list_delete_node(l, node); | |
2888 | } | |
2889 | } | |
2890 | ||
04bec7b2 MS |
2891 | /* Clean up the nhg meta-queue list */ |
2892 | static void nhg_meta_queue_free(struct list *l) | |
2893 | { | |
2894 | struct wq_nhg_wrapper *w; | |
2895 | struct listnode *node; | |
2896 | ||
2897 | /* Free the node wrapper object, and the struct it wraps */ | |
2898 | while ((node = listhead(l)) != NULL) { | |
2899 | w = node->data; | |
2900 | node->data = NULL; | |
2901 | ||
2902 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) | |
2903 | nhg_ctx_free(&w->u.ctx); | |
2904 | else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) | |
2905 | zebra_nhg_free(w->u.nhe); | |
2906 | ||
32367e7a | 2907 | XFREE(MTYPE_WQ_WRAPPER, w); |
04bec7b2 MS |
2908 | |
2909 | list_delete_node(l, node); | |
2910 | } | |
4d38fdb4 | 2911 | } |
2912 | ||
5110a0c6 SH |
2913 | /* Create new meta queue. |
2914 | A destructor function doesn't seem to be necessary here. | |
2915 | */ | |
d62a17ae | 2916 | static struct meta_queue *meta_queue_new(void) |
e96f9203 | 2917 | { |
d62a17ae | 2918 | struct meta_queue *new; |
2919 | unsigned i; | |
5110a0c6 | 2920 | |
d62a17ae | 2921 | new = XCALLOC(MTYPE_WORK_QUEUE, sizeof(struct meta_queue)); |
e96f9203 | 2922 | |
d62a17ae | 2923 | for (i = 0; i < MQ_SIZE; i++) { |
2924 | new->subq[i] = list_new(); | |
2925 | assert(new->subq[i]); | |
2926 | } | |
5110a0c6 | 2927 | |
d62a17ae | 2928 | return new; |
e96f9203 DO |
2929 | } |
2930 | ||
d62a17ae | 2931 | void meta_queue_free(struct meta_queue *mq) |
5a8dfcd8 | 2932 | { |
d62a17ae | 2933 | unsigned i; |
5a8dfcd8 | 2934 | |
04bec7b2 MS |
2935 | for (i = 0; i < MQ_SIZE; i++) { |
2936 | /* Some subqueues may need cleanup - nhgs for example */ | |
2937 | if (i == route_info[ZEBRA_ROUTE_NHG].meta_q_map) | |
2938 | nhg_meta_queue_free(mq->subq[i]); | |
32367e7a MS |
2939 | else if (i == META_QUEUE_EVPN) |
2940 | evpn_meta_queue_free(mq->subq[i]); | |
04bec7b2 | 2941 | |
6a154c88 | 2942 | list_delete(&mq->subq[i]); |
04bec7b2 | 2943 | } |
5a8dfcd8 | 2944 | |
d62a17ae | 2945 | XFREE(MTYPE_WORK_QUEUE, mq); |
5a8dfcd8 RW |
2946 | } |
2947 | ||
0ef6eacc IR |
2948 | void rib_meta_queue_free_vrf(struct meta_queue *mq, struct zebra_vrf *zvrf) |
2949 | { | |
2950 | vrf_id_t vrf_id = zvrf->vrf->vrf_id; | |
2951 | unsigned int i; | |
2952 | ||
2953 | for (i = 0; i < MQ_SIZE; i++) { | |
2954 | struct listnode *lnode, *nnode; | |
2955 | void *data; | |
2956 | bool del; | |
2957 | ||
2958 | for (ALL_LIST_ELEMENTS(mq->subq[i], lnode, nnode, data)) { | |
2959 | del = false; | |
2960 | ||
2961 | if (i == META_QUEUE_EVPN) { | |
2962 | struct wq_evpn_wrapper *w = data; | |
2963 | ||
2964 | if (w->vrf_id == vrf_id) { | |
2965 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2966 | del = true; | |
2967 | } | |
2968 | } else if (i == | |
2969 | route_info[ZEBRA_ROUTE_NHG].meta_q_map) { | |
2970 | struct wq_nhg_wrapper *w = data; | |
2971 | ||
2972 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX && | |
2973 | w->u.ctx->vrf_id == vrf_id) { | |
2974 | nhg_ctx_free(&w->u.ctx); | |
2975 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2976 | del = true; | |
2977 | } else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG && | |
2978 | w->u.nhe->vrf_id == vrf_id) { | |
2979 | zebra_nhg_free(w->u.nhe); | |
2980 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2981 | del = true; | |
2982 | } | |
2983 | } else { | |
2984 | struct route_node *rnode = data; | |
2985 | rib_dest_t *dest = rib_dest_from_rnode(rnode); | |
2986 | ||
2987 | if (dest && rib_dest_vrf(dest) == zvrf) { | |
2988 | route_unlock_node(rnode); | |
2989 | del = true; | |
2990 | } | |
2991 | } | |
2992 | ||
2993 | if (del) { | |
2994 | list_delete_node(mq->subq[i], lnode); | |
2995 | mq->size--; | |
2996 | } | |
2997 | } | |
2998 | } | |
2999 | } | |
3000 | ||
4d38fdb4 | 3001 | /* initialise zebra rib work queue */ |
2561d12e | 3002 | static void rib_queue_init(void) |
4d38fdb4 | 3003 | { |
489a9614 DS |
3004 | if (!(zrouter.ribq = work_queue_new(zrouter.master, |
3005 | "route_node processing"))) { | |
e914ccbe | 3006 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3007 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 3008 | return; |
3009 | } | |
4d38fdb4 | 3010 | |
d62a17ae | 3011 | /* fill in the work queue spec */ |
489a9614 DS |
3012 | zrouter.ribq->spec.workfunc = &meta_queue_process; |
3013 | zrouter.ribq->spec.errorfunc = NULL; | |
46a4e345 | 3014 | zrouter.ribq->spec.completion_func = NULL; |
d62a17ae | 3015 | /* XXX: TODO: These should be runtime configurable via vty */ |
489a9614 DS |
3016 | zrouter.ribq->spec.max_retries = 3; |
3017 | zrouter.ribq->spec.hold = ZEBRA_RIB_PROCESS_HOLD_TIME; | |
3018 | zrouter.ribq->spec.retry = ZEBRA_RIB_PROCESS_RETRY_TIME; | |
d62a17ae | 3019 | |
ea45a4e7 | 3020 | if (!(zrouter.mq = meta_queue_new())) { |
e914ccbe | 3021 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3022 | "%s: could not initialise meta queue!", __func__); |
d62a17ae | 3023 | return; |
3024 | } | |
3025 | return; | |
718e3744 | 3026 | } |
3027 | ||
434434f7 DS |
3028 | rib_dest_t *zebra_rib_create_dest(struct route_node *rn) |
3029 | { | |
3030 | rib_dest_t *dest; | |
3031 | ||
3032 | dest = XCALLOC(MTYPE_RIB_DEST, sizeof(rib_dest_t)); | |
aa57abfb | 3033 | rnh_list_init(&dest->nht); |
daaeaa21 | 3034 | re_list_init(&dest->routes); |
434434f7 DS |
3035 | route_lock_node(rn); /* rn route table reference */ |
3036 | rn->info = dest; | |
3037 | dest->rnode = rn; | |
3038 | ||
3039 | return dest; | |
3040 | } | |
3041 | ||
6d691129 PJ |
3042 | /* RIB updates are processed via a queue of pointers to route_nodes. |
3043 | * | |
3044 | * The queue length is bounded by the maximal size of the routing table, | |
3045 | * as a route_node will not be requeued, if already queued. | |
3046 | * | |
f0f77c9a DS |
3047 | * REs are submitted via rib_addnode or rib_delnode which set minimal |
3048 | * state, or static_install_route (when an existing RE is updated) | |
3c0755dc | 3049 | * and then submit route_node to queue for best-path selection later. |
f0f77c9a | 3050 | * Order of add/delete state changes are preserved for any given RE. |
6d691129 | 3051 | * |
f0f77c9a | 3052 | * Deleted REs are reaped during best-path selection. |
6d691129 PJ |
3053 | * |
3054 | * rib_addnode | |
f0f77c9a DS |
3055 | * |-> rib_link or unset ROUTE_ENTRY_REMOVE |->Update kernel with |
3056 | * |-------->| | best RE, if required | |
3c0755dc PJ |
3057 | * | | |
3058 | * static_install->|->rib_addqueue...... -> rib_process | |
3059 | * | | | |
3060 | * |-------->| |-> rib_unlink | |
f0f77c9a DS |
3061 | * |-> set ROUTE_ENTRY_REMOVE | |
3062 | * rib_delnode (RE freed) | |
6d691129 | 3063 | * |
9fd92e3c AS |
3064 | * The 'info' pointer of a route_node points to a rib_dest_t |
3065 | * ('dest'). Queueing state for a route_node is kept on the dest. The | |
3066 | * dest is created on-demand by rib_link() and is kept around at least | |
3067 | * as long as there are ribs hanging off it (@see rib_gc_dest()). | |
d62a17ae | 3068 | * |
32367e7a | 3069 | * Refcounting (aka "locking" throughout the Zebra and FRR code): |
6d691129 PJ |
3070 | * |
3071 | * - route_nodes: refcounted by: | |
9fd92e3c AS |
3072 | * - dest attached to route_node: |
3073 | * - managed by: rib_link/rib_gc_dest | |
6d691129 PJ |
3074 | * - route_node processing queue |
3075 | * - managed by: rib_addqueue, rib_process. | |
3076 | * | |
3077 | */ | |
d62a17ae | 3078 | |
f0f77c9a | 3079 | /* Add RE to head of the route node. */ |
d62a17ae | 3080 | static void rib_link(struct route_node *rn, struct route_entry *re, int process) |
3081 | { | |
d62a17ae | 3082 | rib_dest_t *dest; |
3083 | afi_t afi; | |
3084 | const char *rmap_name; | |
9fd92e3c | 3085 | |
d62a17ae | 3086 | assert(re && rn); |
9fd92e3c | 3087 | |
d62a17ae | 3088 | dest = rib_dest_from_rnode(rn); |
3089 | if (!dest) { | |
3090 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3091 | rnode_debug(rn, re->vrf_id, "rn %p adding dest", rn); | |
7a4bb9c5 | 3092 | |
434434f7 | 3093 | dest = zebra_rib_create_dest(rn); |
d62a17ae | 3094 | } |
2263a412 | 3095 | |
045207e2 | 3096 | re_list_add_head(&dest->routes, re); |
d62a17ae | 3097 | |
3098 | afi = (rn->p.family == AF_INET) | |
3099 | ? AFI_IP | |
3100 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3101 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3102 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3103 | ||
d62a17ae | 3104 | rmap_name = zebra_get_import_table_route_map(afi, re->table); |
fe257ae7 | 3105 | zebra_add_import_table_entry(zvrf, rn, re, rmap_name); |
d62a17ae | 3106 | } else if (process) |
3107 | rib_queue_add(rn); | |
3108 | } | |
3109 | ||
7e24fdf3 DS |
3110 | static void rib_addnode(struct route_node *rn, |
3111 | struct route_entry *re, int process) | |
d62a17ae | 3112 | { |
3113 | /* RE node has been un-removed before route-node is processed. | |
3114 | * route_node must hence already be on the queue for processing.. | |
3115 | */ | |
3116 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
3117 | if (IS_ZEBRA_DEBUG_RIB) | |
3118 | rnode_debug(rn, re->vrf_id, "rn %p, un-removed re %p", | |
3119 | (void *)rn, (void *)re); | |
3120 | ||
3121 | UNSET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3122 | return; | |
3123 | } | |
3124 | rib_link(rn, re, process); | |
6d691129 PJ |
3125 | } |
3126 | ||
ce649b9d DS |
3127 | static void rib_re_nhg_free(struct route_entry *re) |
3128 | { | |
3129 | if (re->nhe && re->nhe_id) { | |
3130 | assert(re->nhe->id == re->nhe_id); | |
3131 | route_entry_update_nhe(re, NULL); | |
3132 | } else if (re->nhe && re->nhe->nhg.nexthop) | |
3133 | nexthops_free(re->nhe->nhg.nexthop); | |
3134 | ||
3135 | nexthops_free(re->fib_ng.nexthop); | |
3136 | } | |
3137 | ||
9fd92e3c AS |
3138 | /* |
3139 | * rib_unlink | |
3140 | * | |
3141 | * Detach a rib structure from a route_node. | |
3142 | * | |
3143 | * Note that a call to rib_unlink() should be followed by a call to | |
3144 | * rib_gc_dest() at some point. This allows a rib_dest_t that is no | |
3145 | * longer required to be deleted. | |
3146 | */ | |
d62a17ae | 3147 | void rib_unlink(struct route_node *rn, struct route_entry *re) |
6d691129 | 3148 | { |
d62a17ae | 3149 | rib_dest_t *dest; |
9fd92e3c | 3150 | |
d62a17ae | 3151 | assert(rn && re); |
6d691129 | 3152 | |
d62a17ae | 3153 | if (IS_ZEBRA_DEBUG_RIB) |
3154 | rnode_debug(rn, re->vrf_id, "rn %p, re %p", (void *)rn, | |
3155 | (void *)re); | |
6d691129 | 3156 | |
d62a17ae | 3157 | dest = rib_dest_from_rnode(rn); |
6d691129 | 3158 | |
045207e2 | 3159 | re_list_del(&dest->routes, re); |
7a4bb9c5 | 3160 | |
2eb07de3 DS |
3161 | if (dest->selected_fib == re) |
3162 | dest->selected_fib = NULL; | |
3163 | ||
ce649b9d | 3164 | rib_re_nhg_free(re); |
ee5e8a48 | 3165 | |
b86c1f4f | 3166 | zapi_re_opaque_free(re->opaque); |
a29a6001 | 3167 | |
d62a17ae | 3168 | XFREE(MTYPE_RE, re); |
3169 | } | |
3170 | ||
3171 | void rib_delnode(struct route_node *rn, struct route_entry *re) | |
3172 | { | |
3173 | afi_t afi; | |
3174 | ||
3175 | if (IS_ZEBRA_DEBUG_RIB) | |
3176 | rnode_debug(rn, re->vrf_id, "rn %p, re %p, removing", | |
3177 | (void *)rn, (void *)re); | |
3178 | SET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3179 | ||
3180 | afi = (rn->p.family == AF_INET) | |
3181 | ? AFI_IP | |
3182 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3183 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3184 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3185 | ||
3186 | zebra_del_import_table_entry(zvrf, rn, re); | |
d62a17ae | 3187 | /* Just clean up if non main table */ |
e658173a DS |
3188 | if (IS_ZEBRA_DEBUG_RIB) |
3189 | zlog_debug("%s(%u):%pRN: Freeing route rn %p, re %p (%s)", | |
3190 | vrf_id_to_name(re->vrf_id), re->vrf_id, rn, | |
bd47f3a3 | 3191 | rn, re, zebra_route_string(re->type)); |
7a4bb9c5 | 3192 | |
d62a17ae | 3193 | rib_unlink(rn, re); |
3194 | } else { | |
3195 | rib_queue_add(rn); | |
3196 | } | |
718e3744 | 3197 | } |
3198 | ||
6d81b590 MS |
3199 | /* |
3200 | * Helper that debugs a single nexthop within a route-entry | |
3201 | */ | |
3202 | static void _route_entry_dump_nh(const struct route_entry *re, | |
3203 | const char *straddr, | |
3204 | const struct nexthop *nexthop) | |
3205 | { | |
3206 | char nhname[PREFIX_STRLEN]; | |
3207 | char backup_str[50]; | |
3208 | char wgt_str[50]; | |
474aebd9 | 3209 | char temp_str[10]; |
cbe5bafb | 3210 | char label_str[MPLS_LABEL_STRLEN]; |
474aebd9 | 3211 | int i; |
6d81b590 MS |
3212 | struct interface *ifp; |
3213 | struct vrf *vrf = vrf_lookup_by_id(nexthop->vrf_id); | |
3214 | ||
3215 | switch (nexthop->type) { | |
3216 | case NEXTHOP_TYPE_BLACKHOLE: | |
772270f3 | 3217 | snprintf(nhname, sizeof(nhname), "Blackhole"); |
6d81b590 MS |
3218 | break; |
3219 | case NEXTHOP_TYPE_IFINDEX: | |
3220 | ifp = if_lookup_by_index(nexthop->ifindex, nexthop->vrf_id); | |
772270f3 QY |
3221 | snprintf(nhname, sizeof(nhname), "%s", |
3222 | ifp ? ifp->name : "Unknown"); | |
6d81b590 MS |
3223 | break; |
3224 | case NEXTHOP_TYPE_IPV4: | |
3225 | /* fallthrough */ | |
3226 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
3227 | inet_ntop(AF_INET, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
3228 | break; | |
3229 | case NEXTHOP_TYPE_IPV6: | |
3230 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3231 | inet_ntop(AF_INET6, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
3232 | break; | |
3233 | } | |
3234 | ||
cbe5bafb MS |
3235 | /* Label stack */ |
3236 | label_str[0] = '\0'; | |
3237 | if (nexthop->nh_label && nexthop->nh_label->num_labels > 0) { | |
3238 | mpls_label2str(nexthop->nh_label->num_labels, | |
3239 | nexthop->nh_label->label, label_str, | |
3240 | sizeof(label_str), 0 /*pretty*/); | |
3241 | strlcat(label_str, ", ", sizeof(label_str)); | |
3242 | } | |
3243 | ||
6d81b590 MS |
3244 | backup_str[0] = '\0'; |
3245 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3246 | snprintf(backup_str, sizeof(backup_str), "backup "); |
3247 | for (i = 0; i < nexthop->backup_num; i++) { | |
3248 | snprintf(temp_str, sizeof(temp_str), "%d, ", | |
3249 | nexthop->backup_idx[i]); | |
3250 | strlcat(backup_str, temp_str, sizeof(backup_str)); | |
3251 | } | |
6d81b590 MS |
3252 | } |
3253 | ||
3254 | wgt_str[0] = '\0'; | |
3255 | if (nexthop->weight) | |
3256 | snprintf(wgt_str, sizeof(wgt_str), "wgt %d,", nexthop->weight); | |
3257 | ||
cbe5bafb | 3258 | zlog_debug("%s: %s %s[%u] %svrf %s(%u) %s%s with flags %s%s%s%s%s%s%s%s", |
6d81b590 | 3259 | straddr, (nexthop->rparent ? " NH" : "NH"), nhname, |
cbe5bafb | 3260 | nexthop->ifindex, label_str, vrf ? vrf->name : "Unknown", |
6d81b590 MS |
3261 | nexthop->vrf_id, |
3262 | wgt_str, backup_str, | |
3263 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
3264 | ? "ACTIVE " | |
3265 | : ""), | |
3266 | (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) | |
3267 | ? "FIB " | |
3268 | : ""), | |
3269 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
3270 | ? "RECURSIVE " | |
3271 | : ""), | |
3272 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK) | |
3273 | ? "ONLINK " | |
3274 | : ""), | |
3275 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_DUPLICATE) | |
3276 | ? "DUPLICATE " | |
aab4eca1 DS |
3277 | : ""), |
3278 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RNH_FILTERED) | |
3279 | ? "FILTERED " : ""), | |
3280 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP) | |
3281 | ? "BACKUP " : ""), | |
3282 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE) | |
3283 | ? "SRTE " : "")); | |
6d81b590 MS |
3284 | |
3285 | } | |
3286 | ||
f0f77c9a | 3287 | /* This function dumps the contents of a given RE entry into |
dc95824a DO |
3288 | * standard debug log. Calling function name and IP prefix in |
3289 | * question are passed as 1st and 2nd arguments. | |
3290 | */ | |
d62a17ae | 3291 | void _route_entry_dump(const char *func, union prefixconstptr pp, |
3292 | union prefixconstptr src_pp, | |
3293 | const struct route_entry *re) | |
3294 | { | |
d62a17ae | 3295 | const struct prefix *src_p = src_pp.p; |
3296 | bool is_srcdst = src_p && src_p->prefixlen; | |
3297 | char straddr[PREFIX_STRLEN]; | |
3298 | char srcaddr[PREFIX_STRLEN]; | |
61e6de9d DS |
3299 | char flags_buf[128]; |
3300 | char status_buf[128]; | |
d62a17ae | 3301 | struct nexthop *nexthop; |
c479e756 | 3302 | struct vrf *vrf = vrf_lookup_by_id(re->vrf_id); |
6d81b590 | 3303 | struct nexthop_group *nhg; |
d62a17ae | 3304 | |
5d27875b DL |
3305 | prefix2str(pp, straddr, sizeof(straddr)); |
3306 | ||
c479e756 | 3307 | zlog_debug("%s: dumping RE entry %p for %s%s%s vrf %s(%u)", func, |
5d27875b | 3308 | (const void *)re, straddr, |
d62a17ae | 3309 | is_srcdst ? " from " : "", |
3310 | is_srcdst ? prefix2str(src_pp, srcaddr, sizeof(srcaddr)) | |
3311 | : "", | |
c479e756 | 3312 | VRF_LOGNAME(vrf), re->vrf_id); |
cc54cfee | 3313 | zlog_debug("%s: uptime == %lu, type == %u, instance == %d, table == %d", |
53c16fbe | 3314 | straddr, (unsigned long)re->uptime, re->type, re->instance, |
cc54cfee | 3315 | re->table); |
61e6de9d DS |
3316 | zlog_debug( |
3317 | "%s: metric == %u, mtu == %u, distance == %u, flags == %sstatus == %s", | |
3318 | straddr, re->metric, re->mtu, re->distance, | |
3319 | zclient_dump_route_flags(re->flags, flags_buf, | |
3320 | sizeof(flags_buf)), | |
3321 | _dump_re_status(re, status_buf, sizeof(status_buf))); | |
53c16fbe | 3322 | zlog_debug("%s: nexthop_num == %u, nexthop_active_num == %u", straddr, |
c415d895 MS |
3323 | nexthop_group_nexthop_num(&(re->nhe->nhg)), |
3324 | nexthop_group_active_nexthop_num(&(re->nhe->nhg))); | |
d62a17ae | 3325 | |
6d81b590 MS |
3326 | /* Dump nexthops */ |
3327 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) | |
3328 | _route_entry_dump_nh(re, straddr, nexthop); | |
2d68a0f2 | 3329 | |
6d81b590 MS |
3330 | if (zebra_nhg_get_backup_nhg(re->nhe)) { |
3331 | zlog_debug("%s: backup nexthops:", straddr); | |
3332 | ||
3333 | nhg = zebra_nhg_get_backup_nhg(re->nhe); | |
3334 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) | |
3335 | _route_entry_dump_nh(re, straddr, nexthop); | |
d62a17ae | 3336 | } |
6d81b590 | 3337 | |
53c16fbe | 3338 | zlog_debug("%s: dump complete", straddr); |
dc95824a DO |
3339 | } |
3340 | ||
1d48702e MS |
3341 | /* |
3342 | * Internal route-add implementation; there are a couple of different public | |
3343 | * signatures. Callers in this path are responsible for the memory they | |
3344 | * allocate: if they allocate a nexthop_group or backup nexthop info, they | |
3345 | * must free those objects. If this returns < 0, an error has occurred and the | |
3346 | * route_entry 're' has not been captured; the caller should free that also. | |
38c764dd DS |
3347 | * |
3348 | * -1 -> error | |
3349 | * 0 -> Add | |
3350 | * 1 -> update | |
1d48702e MS |
3351 | */ |
3352 | int rib_add_multipath_nhe(afi_t afi, safi_t safi, struct prefix *p, | |
6d81b590 | 3353 | struct prefix_ipv6 *src_p, struct route_entry *re, |
c6eee91f | 3354 | struct nhg_hash_entry *re_nhe, bool startup) |
718e3744 | 3355 | { |
98cda54a | 3356 | struct nhg_hash_entry *nhe = NULL; |
d62a17ae | 3357 | struct route_table *table; |
3358 | struct route_node *rn; | |
0ca6f3b1 | 3359 | struct route_entry *same = NULL, *first_same = NULL; |
d62a17ae | 3360 | int ret = 0; |
0ca6f3b1 MS |
3361 | int same_count = 0; |
3362 | rib_dest_t *dest; | |
b4c034b0 | 3363 | |
1d48702e MS |
3364 | if (!re || !re_nhe) |
3365 | return -1; | |
b4c034b0 | 3366 | |
1f610a1f | 3367 | assert(!src_p || !src_p->prefixlen || afi == AFI_IP6); |
05737783 | 3368 | |
d62a17ae | 3369 | /* Lookup table. */ |
c7c0b007 SW |
3370 | table = zebra_vrf_get_table_with_table_id(afi, safi, re->vrf_id, |
3371 | re->table); | |
1d48702e MS |
3372 | if (!table) |
3373 | return -1; | |
cddf391b | 3374 | |
50db3f2f SW |
3375 | if (re->nhe_id > 0) { |
3376 | nhe = zebra_nhg_lookup_id(re->nhe_id); | |
98cda54a SW |
3377 | |
3378 | if (!nhe) { | |
3379 | flog_err( | |
3380 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
3381 | "Zebra failed to find the nexthop hash entry for id=%u in a route entry", | |
50db3f2f | 3382 | re->nhe_id); |
1d48702e | 3383 | |
98cda54a SW |
3384 | return -1; |
3385 | } | |
3386 | } else { | |
377e29f7 MS |
3387 | /* Lookup nhe from route information */ |
3388 | nhe = zebra_nhg_rib_find_nhe(re_nhe, afi); | |
98cda54a | 3389 | if (!nhe) { |
98cda54a SW |
3390 | char buf2[PREFIX_STRLEN] = ""; |
3391 | ||
3392 | flog_err( | |
3393 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
2dbe669b DA |
3394 | "Zebra failed to find or create a nexthop hash entry for %pFX%s%s", |
3395 | p, src_p ? " from " : "", | |
98cda54a SW |
3396 | src_p ? prefix2str(src_p, buf2, sizeof(buf2)) |
3397 | : ""); | |
3398 | ||
98cda54a SW |
3399 | return -1; |
3400 | } | |
98cda54a SW |
3401 | } |
3402 | ||
4b87c90d SW |
3403 | /* |
3404 | * Attach the re to the nhe's nexthop group. | |
3405 | * | |
3406 | * TODO: This will need to change when we start getting IDs from upper | |
3407 | * level protocols, as the refcnt might be wrong, since it checks | |
3408 | * if old_id != new_id. | |
3409 | */ | |
5463ce26 | 3410 | route_entry_update_nhe(re, nhe); |
98cda54a | 3411 | |
d62a17ae | 3412 | /* Make it sure prefixlen is applied to the prefix. */ |
3413 | apply_mask(p); | |
3414 | if (src_p) | |
3415 | apply_mask_ipv6(src_p); | |
718e3744 | 3416 | |
d62a17ae | 3417 | /* Set default distance by route type. */ |
eea2ef07 | 3418 | if (re->distance == 0) |
0492eea0 | 3419 | re->distance = route_distance(re->type); |
718e3744 | 3420 | |
d62a17ae | 3421 | /* Lookup route node.*/ |
3422 | rn = srcdest_rnode_get(table, p, src_p); | |
718e3744 | 3423 | |
40ecd8e4 DS |
3424 | /* |
3425 | * If same type of route are installed, treat it as a implicit | |
9db35a5e | 3426 | * withdraw. If the user has specified the No route replace semantics |
40ecd8e4 DS |
3427 | * for the install don't do a route replace. |
3428 | */ | |
a2addae8 | 3429 | RNODE_FOREACH_RE (rn, same) { |
0ca6f3b1 MS |
3430 | if (CHECK_FLAG(same->status, ROUTE_ENTRY_REMOVED)) { |
3431 | same_count++; | |
d62a17ae | 3432 | continue; |
0ca6f3b1 | 3433 | } |
41ec9222 | 3434 | |
9db35a5e | 3435 | /* Compare various route_entry properties */ |
0ca6f3b1 MS |
3436 | if (rib_compare_routes(re, same)) { |
3437 | same_count++; | |
3438 | ||
3439 | if (first_same == NULL) | |
3440 | first_same = same; | |
3441 | } | |
d62a17ae | 3442 | } |
718e3744 | 3443 | |
0ca6f3b1 MS |
3444 | same = first_same; |
3445 | ||
c6eee91f DS |
3446 | if (!startup && |
3447 | (re->flags & ZEBRA_FLAG_SELFROUTE) && zrouter.asic_offloaded) { | |
3448 | if (!same) { | |
3449 | if (IS_ZEBRA_DEBUG_RIB) | |
3450 | zlog_debug("prefix: %pRN is a self route where we do not have an entry for it. Dropping this update, it's useless", rn); | |
3451 | /* | |
3452 | * We are not on startup, this is a self route | |
3453 | * and we have asic offload. Which means | |
3454 | * we are getting a callback for a entry | |
3455 | * that was already deleted to the kernel | |
3456 | * but an earlier response was just handed | |
3457 | * back. Drop it on the floor | |
3458 | */ | |
ce649b9d | 3459 | rib_re_nhg_free(re); |
c6eee91f DS |
3460 | |
3461 | XFREE(MTYPE_RE, re); | |
3462 | return ret; | |
3463 | } | |
3464 | } | |
3465 | ||
cf363e1b MS |
3466 | /* If this route is kernel/connected route, notify the dataplane. */ |
3467 | if (RIB_SYSTEM_ROUTE(re)) { | |
3468 | /* Notify dataplane */ | |
3469 | dplane_sys_route_add(rn, re); | |
3470 | } | |
3471 | ||
d62a17ae | 3472 | /* Link new re to node.*/ |
3473 | if (IS_ZEBRA_DEBUG_RIB) { | |
2da33d6b | 3474 | rnode_debug(rn, re->vrf_id, |
0ca6f3b1 MS |
3475 | "Inserting route rn %p, re %p (%s) existing %p, same_count %d", |
3476 | rn, re, zebra_route_string(re->type), same, | |
3477 | same_count); | |
718e3744 | 3478 | |
d62a17ae | 3479 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
3480 | route_entry_dump(p, src_p, re); | |
718e3744 | 3481 | } |
6883bf8d DS |
3482 | |
3483 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
d62a17ae | 3484 | rib_addnode(rn, re, 1); |
6b0655a2 | 3485 | |
d62a17ae | 3486 | /* Free implicit route.*/ |
38c764dd DS |
3487 | if (same) { |
3488 | ret = 1; | |
d62a17ae | 3489 | rib_delnode(rn, same); |
38c764dd | 3490 | } |
718e3744 | 3491 | |
0ca6f3b1 MS |
3492 | /* See if we can remove some RE entries that are queued for |
3493 | * removal, but won't be considered in rib processing. | |
3494 | */ | |
3495 | dest = rib_dest_from_rnode(rn); | |
3496 | RNODE_FOREACH_RE_SAFE (rn, re, same) { | |
3497 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
3498 | /* If the route was used earlier, must retain it. */ | |
3499 | if (dest && re == dest->selected_fib) | |
3500 | continue; | |
3501 | ||
3502 | if (IS_ZEBRA_DEBUG_RIB) | |
3503 | rnode_debug(rn, re->vrf_id, "rn %p, removing unneeded re %p", | |
3504 | rn, re); | |
3505 | ||
3506 | rib_unlink(rn, re); | |
3507 | } | |
3508 | } | |
3509 | ||
d62a17ae | 3510 | route_unlock_node(rn); |
3511 | return ret; | |
3512 | } | |
3513 | ||
1d48702e MS |
3514 | /* |
3515 | * Add a single route. | |
3516 | */ | |
3517 | int rib_add_multipath(afi_t afi, safi_t safi, struct prefix *p, | |
3518 | struct prefix_ipv6 *src_p, struct route_entry *re, | |
c6eee91f | 3519 | struct nexthop_group *ng, bool startup) |
1d48702e MS |
3520 | { |
3521 | int ret; | |
377e29f7 | 3522 | struct nhg_hash_entry nhe; |
1d48702e MS |
3523 | |
3524 | if (!re) | |
3525 | return -1; | |
3526 | ||
3527 | /* We either need nexthop(s) or an existing nexthop id */ | |
3528 | if (ng == NULL && re->nhe_id == 0) | |
3529 | return -1; | |
3530 | ||
3531 | /* | |
3532 | * Use a temporary nhe to convey info to the common/main api. | |
3533 | */ | |
377e29f7 | 3534 | zebra_nhe_init(&nhe, afi, (ng ? ng->nexthop : NULL)); |
1d48702e MS |
3535 | if (ng) |
3536 | nhe.nhg.nexthop = ng->nexthop; | |
3537 | else if (re->nhe_id > 0) | |
3538 | nhe.id = re->nhe_id; | |
3539 | ||
c6eee91f | 3540 | ret = rib_add_multipath_nhe(afi, safi, p, src_p, re, &nhe, startup); |
1d48702e MS |
3541 | |
3542 | /* In this path, the callers expect memory to be freed. */ | |
3543 | nexthop_group_delete(&ng); | |
3544 | ||
3545 | /* In error cases, free the route also */ | |
3546 | if (ret < 0) | |
3547 | XFREE(MTYPE_RE, re); | |
3548 | ||
3549 | return ret; | |
3550 | } | |
3551 | ||
d62a17ae | 3552 | void rib_delete(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 3553 | unsigned short instance, uint32_t flags, struct prefix *p, |
fd36be7e | 3554 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
bc541126 | 3555 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, |
3ceae22b | 3556 | uint8_t distance, bool fromkernel) |
d62a17ae | 3557 | { |
3558 | struct route_table *table; | |
3559 | struct route_node *rn; | |
3560 | struct route_entry *re; | |
3561 | struct route_entry *fib = NULL; | |
3562 | struct route_entry *same = NULL; | |
fd36be7e | 3563 | struct nexthop *rtnh; |
d62a17ae | 3564 | char buf2[INET6_ADDRSTRLEN]; |
5f7a4718 | 3565 | rib_dest_t *dest; |
d62a17ae | 3566 | |
1f610a1f | 3567 | assert(!src_p || !src_p->prefixlen || afi == AFI_IP6); |
d62a17ae | 3568 | |
3569 | /* Lookup table. */ | |
c7c0b007 SW |
3570 | table = zebra_vrf_lookup_table_with_table_id(afi, safi, vrf_id, |
3571 | table_id); | |
d62a17ae | 3572 | if (!table) |
3573 | return; | |
3574 | ||
3575 | /* Apply mask. */ | |
3576 | apply_mask(p); | |
3577 | if (src_p) | |
3578 | apply_mask_ipv6(src_p); | |
3579 | ||
3580 | /* Lookup route node. */ | |
3581 | rn = srcdest_rnode_lookup(table, p, src_p); | |
3582 | if (!rn) { | |
82d7d0e2 | 3583 | if (IS_ZEBRA_DEBUG_RIB) { |
82144f53 | 3584 | char src_buf[PREFIX_STRLEN]; |
82d7d0e2 DS |
3585 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
3586 | ||
82144f53 DS |
3587 | if (src_p && src_p->prefixlen) |
3588 | prefix2str(src_p, src_buf, sizeof(src_buf)); | |
3589 | else | |
3590 | src_buf[0] = '\0'; | |
3591 | ||
5ef3568f DS |
3592 | zlog_debug("%s[%d]:%pRN%s%s doesn't exist in rib", |
3593 | vrf->name, table_id, rn, | |
d62a17ae | 3594 | (src_buf[0] != '\0') ? " from " : "", |
3595 | src_buf); | |
82d7d0e2 | 3596 | } |
d62a17ae | 3597 | return; |
3598 | } | |
718e3744 | 3599 | |
5f7a4718 DS |
3600 | dest = rib_dest_from_rnode(rn); |
3601 | fib = dest->selected_fib; | |
3602 | ||
d62a17ae | 3603 | /* Lookup same type route. */ |
a2addae8 | 3604 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 3605 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
3606 | continue; | |
3607 | ||
d62a17ae | 3608 | if (re->type != type) |
3609 | continue; | |
3610 | if (re->instance != instance) | |
3611 | continue; | |
40ecd8e4 DS |
3612 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && |
3613 | distance != re->distance) | |
3614 | continue; | |
3615 | ||
996c9314 | 3616 | if (re->type == ZEBRA_ROUTE_KERNEL && re->metric != metric) |
f19435a8 | 3617 | continue; |
0eb97b86 | 3618 | if (re->type == ZEBRA_ROUTE_CONNECT && |
c415d895 | 3619 | (rtnh = re->nhe->nhg.nexthop) |
fd36be7e DL |
3620 | && rtnh->type == NEXTHOP_TYPE_IFINDEX && nh) { |
3621 | if (rtnh->ifindex != nh->ifindex) | |
d62a17ae | 3622 | continue; |
d62a17ae | 3623 | same = re; |
3624 | break; | |
3625 | } | |
fec211ad | 3626 | |
d62a17ae | 3627 | /* Make sure that the route found has the same gateway. */ |
fec211ad | 3628 | if (nhe_id && re->nhe_id == nhe_id) { |
bc541126 SW |
3629 | same = re; |
3630 | break; | |
fec211ad SW |
3631 | } |
3632 | ||
3633 | if (nh == NULL) { | |
3634 | same = re; | |
3635 | break; | |
3636 | } | |
c415d895 | 3637 | for (ALL_NEXTHOPS(re->nhe->nhg, rtnh)) { |
fec211ad SW |
3638 | /* |
3639 | * No guarantee all kernel send nh with labels | |
3640 | * on delete. | |
3641 | */ | |
3642 | if (nexthop_same_no_labels(rtnh, nh)) { | |
d62a17ae | 3643 | same = re; |
3644 | break; | |
3645 | } | |
d62a17ae | 3646 | } |
fec211ad SW |
3647 | |
3648 | if (same) | |
3649 | break; | |
d62a17ae | 3650 | } |
3651 | /* If same type of route can't be found and this message is from | |
3652 | kernel. */ | |
3653 | if (!same) { | |
5dfeba19 DS |
3654 | /* |
3655 | * In the past(HA!) we could get here because | |
3656 | * we were receiving a route delete from the | |
3657 | * kernel and we're not marking the proto | |
3658 | * as coming from it's appropriate originator. | |
3659 | * Now that we are properly noticing the fact | |
3660 | * that the kernel has deleted our route we | |
3661 | * are not going to get called in this path | |
3662 | * I am going to leave this here because | |
3663 | * this might still work this way on non-linux | |
3664 | * platforms as well as some weird state I have | |
3665 | * not properly thought of yet. | |
3666 | * If we can show that this code path is | |
3667 | * dead then we can remove it. | |
3668 | */ | |
b8faa875 | 3669 | if (fib && CHECK_FLAG(flags, ZEBRA_FLAG_SELFROUTE)) { |
d62a17ae | 3670 | if (IS_ZEBRA_DEBUG_RIB) { |
2da33d6b DS |
3671 | rnode_debug(rn, vrf_id, |
3672 | "rn %p, re %p (%s) was deleted from kernel, adding", | |
3673 | rn, fib, | |
3674 | zebra_route_string(fib->type)); | |
d62a17ae | 3675 | } |
9271987f DS |
3676 | if (allow_delete |
3677 | || CHECK_FLAG(dest->flags, RIB_ROUTE_ANY_QUEUED)) { | |
677c1dd5 | 3678 | UNSET_FLAG(fib->status, ROUTE_ENTRY_INSTALLED); |
d62a17ae | 3679 | /* Unset flags. */ |
c415d895 | 3680 | for (rtnh = fib->nhe->nhg.nexthop; rtnh; |
fd36be7e DL |
3681 | rtnh = rtnh->next) |
3682 | UNSET_FLAG(rtnh->flags, | |
d62a17ae | 3683 | NEXTHOP_FLAG_FIB); |
3684 | ||
ed216282 DS |
3685 | /* |
3686 | * This is a non FRR route | |
3687 | * as such we should mark | |
3688 | * it as deleted | |
3689 | */ | |
5f7a4718 | 3690 | dest->selected_fib = NULL; |
d62a17ae | 3691 | } else { |
3692 | /* This means someone else, other than Zebra, | |
3693 | * has deleted | |
3694 | * a Zebra router from the kernel. We will add | |
3695 | * it back */ | |
3696 | rib_install_kernel(rn, fib, NULL); | |
3697 | } | |
3698 | } else { | |
3699 | if (IS_ZEBRA_DEBUG_RIB) { | |
fd36be7e | 3700 | if (nh) |
d62a17ae | 3701 | rnode_debug( |
3702 | rn, vrf_id, | |
3efd0893 | 3703 | "via %s ifindex %d type %d doesn't exist in rib", |
36228974 | 3704 | inet_ntop(afi2family(afi), |
3705 | &nh->gate, buf2, | |
3706 | sizeof(buf2)), | |
3707 | nh->ifindex, type); | |
d62a17ae | 3708 | else |
3709 | rnode_debug( | |
3710 | rn, vrf_id, | |
fd36be7e DL |
3711 | "type %d doesn't exist in rib", |
3712 | type); | |
d62a17ae | 3713 | } |
3714 | route_unlock_node(rn); | |
3715 | return; | |
3716 | } | |
3717 | } | |
718e3744 | 3718 | |
5dfeba19 | 3719 | if (same) { |
996c9314 LB |
3720 | if (fromkernel && CHECK_FLAG(flags, ZEBRA_FLAG_SELFROUTE) |
3721 | && !allow_delete) { | |
5dfeba19 DS |
3722 | rib_install_kernel(rn, same, NULL); |
3723 | route_unlock_node(rn); | |
3724 | ||
3725 | return; | |
3726 | } | |
6134fd82 | 3727 | |
2b83602b | 3728 | /* Special handling for IPv4 or IPv6 routes sourced from |
3729 | * EVPN - the nexthop (and associated MAC) need to be | |
3730 | * uninstalled if no more refs. | |
3731 | */ | |
90264d64 | 3732 | if (CHECK_FLAG(flags, ZEBRA_FLAG_EVPN_ROUTE)) { |
6134fd82 | 3733 | struct nexthop *tmp_nh; |
3734 | ||
c415d895 | 3735 | for (ALL_NEXTHOPS(re->nhe->nhg, tmp_nh)) { |
6134fd82 | 3736 | struct ipaddr vtep_ip; |
3737 | ||
3738 | memset(&vtep_ip, 0, sizeof(struct ipaddr)); | |
1ec31309 | 3739 | if (afi == AFI_IP) { |
3740 | vtep_ip.ipa_type = IPADDR_V4; | |
3741 | memcpy(&(vtep_ip.ipaddr_v4), | |
3742 | &(tmp_nh->gate.ipv4), | |
3743 | sizeof(struct in_addr)); | |
3744 | } else { | |
3745 | vtep_ip.ipa_type = IPADDR_V6; | |
3746 | memcpy(&(vtep_ip.ipaddr_v6), | |
3747 | &(tmp_nh->gate.ipv6), | |
3748 | sizeof(struct in6_addr)); | |
3749 | } | |
32367e7a | 3750 | zebra_rib_queue_evpn_route_del(re->vrf_id, |
6134fd82 | 3751 | &vtep_ip, p); |
3752 | } | |
3753 | } | |
cf363e1b MS |
3754 | |
3755 | /* Notify dplane if system route changes */ | |
3756 | if (RIB_SYSTEM_ROUTE(re)) | |
3757 | dplane_sys_route_del(rn, same); | |
3758 | ||
d62a17ae | 3759 | rib_delnode(rn, same); |
5dfeba19 | 3760 | } |
05737783 | 3761 | |
d62a17ae | 3762 | route_unlock_node(rn); |
3763 | return; | |
3764 | } | |
718e3744 | 3765 | |
718e3744 | 3766 | |
d7c0a89a | 3767 | int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 3768 | unsigned short instance, uint32_t flags, struct prefix *p, |
d7c0a89a | 3769 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
8032b717 | 3770 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, uint32_t mtu, |
c6eee91f | 3771 | uint8_t distance, route_tag_t tag, bool startup) |
d62a17ae | 3772 | { |
bbb322f2 SW |
3773 | struct route_entry *re = NULL; |
3774 | struct nexthop *nexthop = NULL; | |
0eb97b86 | 3775 | struct nexthop_group *ng = NULL; |
718e3744 | 3776 | |
66af6845 | 3777 | /* Allocate new route_entry structure. */ |
d62a17ae | 3778 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); |
d62a17ae | 3779 | re->type = type; |
3780 | re->instance = instance; | |
3781 | re->distance = distance; | |
3782 | re->flags = flags; | |
3783 | re->metric = metric; | |
3784 | re->mtu = mtu; | |
3785 | re->table = table_id; | |
3786 | re->vrf_id = vrf_id; | |
98572489 | 3787 | re->uptime = monotime(NULL); |
4e40b6d6 | 3788 | re->tag = tag; |
bbb322f2 SW |
3789 | re->nhe_id = nhe_id; |
3790 | ||
0eb97b86 MS |
3791 | /* If the owner of the route supplies a shared nexthop-group id, |
3792 | * we'll use that. Otherwise, pass the nexthop along directly. | |
3793 | */ | |
e22e8001 | 3794 | if (!nhe_id) { |
0eb97b86 | 3795 | ng = nexthop_group_new(); |
d62a17ae | 3796 | |
e22e8001 SW |
3797 | /* Add nexthop. */ |
3798 | nexthop = nexthop_new(); | |
3799 | *nexthop = *nh; | |
0eb97b86 | 3800 | nexthop_group_add_sorted(ng, nexthop); |
e22e8001 | 3801 | } |
718e3744 | 3802 | |
c6eee91f | 3803 | return rib_add_multipath(afi, safi, p, src_p, re, ng, startup); |
718e3744 | 3804 | } |
3805 | ||
91e6f25b | 3806 | static const char *rib_update_event2str(enum rib_update_event event) |
2a99ab95 SW |
3807 | { |
3808 | const char *ret = "UNKNOWN"; | |
3809 | ||
3810 | switch (event) { | |
3811 | case RIB_UPDATE_KERNEL: | |
3812 | ret = "RIB_UPDATE_KERNEL"; | |
3813 | break; | |
3814 | case RIB_UPDATE_RMAP_CHANGE: | |
3815 | ret = "RIB_UPDATE_RMAP_CHANGE"; | |
3816 | break; | |
3817 | case RIB_UPDATE_OTHER: | |
3818 | ret = "RIB_UPDATE_OTHER"; | |
3819 | break; | |
3820 | case RIB_UPDATE_MAX: | |
3821 | break; | |
3822 | } | |
3823 | ||
3824 | return ret; | |
3825 | } | |
3826 | ||
3827 | ||
3828 | /* Schedule route nodes to be processed if they match the type */ | |
3829 | static void rib_update_route_node(struct route_node *rn, int type) | |
3830 | { | |
3831 | struct route_entry *re, *next; | |
3832 | bool re_changed = false; | |
3833 | ||
3834 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
3835 | if (type == ZEBRA_ROUTE_ALL || type == re->type) { | |
3836 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3837 | re_changed = true; | |
3838 | } | |
3839 | } | |
3840 | ||
3841 | if (re_changed) | |
3842 | rib_queue_add(rn); | |
3843 | } | |
3844 | ||
1c848137 | 3845 | /* Schedule routes of a particular table (address-family) based on event. */ |
54aeba35 DS |
3846 | void rib_update_table(struct route_table *table, enum rib_update_event event, |
3847 | int rtype) | |
d62a17ae | 3848 | { |
3849 | struct route_node *rn; | |
2a99ab95 SW |
3850 | |
3851 | if (IS_ZEBRA_DEBUG_EVENT) { | |
3852 | struct zebra_vrf *zvrf; | |
3853 | struct vrf *vrf; | |
3854 | ||
630d5962 DS |
3855 | zvrf = table->info |
3856 | ? ((struct rib_table_info *)table->info)->zvrf | |
3857 | : NULL; | |
2a99ab95 SW |
3858 | vrf = zvrf ? zvrf->vrf : NULL; |
3859 | ||
54aeba35 | 3860 | zlog_debug("%s: %s VRF %s Table %u event %s Route type: %s", __func__, |
2a99ab95 | 3861 | table->info ? afi2str( |
630d5962 | 3862 | ((struct rib_table_info *)table->info)->afi) |
2a99ab95 | 3863 | : "Unknown", |
bd47f3a3 | 3864 | VRF_LOGNAME(vrf), zvrf ? zvrf->table_id : 0, |
54aeba35 | 3865 | rib_update_event2str(event), zebra_route_string(rtype)); |
2a99ab95 | 3866 | } |
d62a17ae | 3867 | |
3868 | /* Walk all routes and queue for processing, if appropriate for | |
3869 | * the trigger event. | |
3870 | */ | |
3871 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { | |
1ca60f2c DS |
3872 | /* |
3873 | * If we are looking at a route node and the node | |
3874 | * has already been queued we don't | |
3875 | * need to queue it up again | |
3876 | */ | |
2a99ab95 SW |
3877 | if (rn->info |
3878 | && CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
3879 | RIB_ROUTE_ANY_QUEUED)) | |
1ca60f2c | 3880 | continue; |
2a99ab95 | 3881 | |
d62a17ae | 3882 | switch (event) { |
2a99ab95 SW |
3883 | case RIB_UPDATE_KERNEL: |
3884 | rib_update_route_node(rn, ZEBRA_ROUTE_KERNEL); | |
3885 | break; | |
d62a17ae | 3886 | case RIB_UPDATE_RMAP_CHANGE: |
3887 | case RIB_UPDATE_OTHER: | |
54aeba35 | 3888 | rib_update_route_node(rn, rtype); |
d62a17ae | 3889 | break; |
d62a17ae | 3890 | default: |
3891 | break; | |
3892 | } | |
3893 | } | |
b84c7253 | 3894 | } |
3895 | ||
54aeba35 DS |
3896 | static void rib_update_handle_vrf(vrf_id_t vrf_id, enum rib_update_event event, |
3897 | int rtype) | |
718e3744 | 3898 | { |
d62a17ae | 3899 | struct route_table *table; |
1c848137 | 3900 | |
2a99ab95 SW |
3901 | if (IS_ZEBRA_DEBUG_EVENT) |
3902 | zlog_debug("%s: Handling VRF %s event %s", __func__, | |
3903 | vrf_id_to_name(vrf_id), rib_update_event2str(event)); | |
3904 | ||
d62a17ae | 3905 | /* Process routes of interested address-families. */ |
3906 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
2a99ab95 | 3907 | if (table) |
54aeba35 | 3908 | rib_update_table(table, event, rtype); |
718e3744 | 3909 | |
d62a17ae | 3910 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, vrf_id); |
2a99ab95 | 3911 | if (table) |
54aeba35 | 3912 | rib_update_table(table, event, rtype); |
2a99ab95 SW |
3913 | } |
3914 | ||
54aeba35 | 3915 | static void rib_update_handle_vrf_all(enum rib_update_event event, int rtype) |
2a99ab95 SW |
3916 | { |
3917 | struct zebra_router_table *zrt; | |
3918 | ||
3919 | if (IS_ZEBRA_DEBUG_EVENT) | |
3920 | zlog_debug("%s: Handling VRF (ALL) event %s", __func__, | |
3921 | rib_update_event2str(event)); | |
3922 | ||
3923 | /* Just iterate over all the route tables, rather than vrf lookups */ | |
3924 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) | |
54aeba35 | 3925 | rib_update_table(zrt->table, event, rtype); |
2a99ab95 SW |
3926 | } |
3927 | ||
3928 | struct rib_update_ctx { | |
91e6f25b | 3929 | enum rib_update_event event; |
2a99ab95 SW |
3930 | bool vrf_all; |
3931 | vrf_id_t vrf_id; | |
3932 | }; | |
3933 | ||
3934 | static struct rib_update_ctx *rib_update_ctx_init(vrf_id_t vrf_id, | |
91e6f25b | 3935 | enum rib_update_event event) |
2a99ab95 SW |
3936 | { |
3937 | struct rib_update_ctx *ctx; | |
3938 | ||
3939 | ctx = XCALLOC(MTYPE_RIB_UPDATE_CTX, sizeof(struct rib_update_ctx)); | |
3940 | ||
3941 | ctx->event = event; | |
3942 | ctx->vrf_id = vrf_id; | |
3943 | ||
3944 | return ctx; | |
3945 | } | |
3946 | ||
3947 | static void rib_update_ctx_fini(struct rib_update_ctx **ctx) | |
3948 | { | |
3949 | XFREE(MTYPE_RIB_UPDATE_CTX, *ctx); | |
2a99ab95 SW |
3950 | } |
3951 | ||
cc9f21da | 3952 | static void rib_update_handler(struct thread *thread) |
2a99ab95 SW |
3953 | { |
3954 | struct rib_update_ctx *ctx; | |
3955 | ||
3956 | ctx = THREAD_ARG(thread); | |
3957 | ||
3958 | if (ctx->vrf_all) | |
54aeba35 | 3959 | rib_update_handle_vrf_all(ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 | 3960 | else |
54aeba35 | 3961 | rib_update_handle_vrf(ctx->vrf_id, ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 SW |
3962 | |
3963 | rib_update_ctx_fini(&ctx); | |
2a99ab95 SW |
3964 | } |
3965 | ||
3966 | /* | |
3967 | * Thread list to ensure we don't schedule a ton of events | |
3968 | * if interfaces are flapping for instance. | |
3969 | */ | |
3970 | static struct thread *t_rib_update_threads[RIB_UPDATE_MAX]; | |
3971 | ||
2a99ab95 | 3972 | /* Schedule a RIB update event for all vrfs */ |
91e6f25b | 3973 | void rib_update(enum rib_update_event event) |
2a99ab95 SW |
3974 | { |
3975 | struct rib_update_ctx *ctx; | |
3976 | ||
e13f12a7 DS |
3977 | if (thread_is_scheduled(t_rib_update_threads[event])) |
3978 | return; | |
2a99ab95 | 3979 | |
e13f12a7 | 3980 | ctx = rib_update_ctx_init(0, event); |
2a99ab95 SW |
3981 | ctx->vrf_all = true; |
3982 | ||
e13f12a7 DS |
3983 | thread_add_event(zrouter.master, rib_update_handler, ctx, 0, |
3984 | &t_rib_update_threads[event]); | |
3985 | ||
3986 | if (IS_ZEBRA_DEBUG_EVENT) | |
05267678 | 3987 | zlog_debug("%s: Scheduled VRF (ALL), event %s", __func__, |
2a99ab95 | 3988 | rib_update_event2str(event)); |
718e3744 | 3989 | } |
3990 | ||
718e3744 | 3991 | /* Delete self installed routes after zebra is relaunched. */ |
95a29032 | 3992 | void rib_sweep_table(struct route_table *table) |
d62a17ae | 3993 | { |
3994 | struct route_node *rn; | |
3995 | struct route_entry *re; | |
3996 | struct route_entry *next; | |
915902cb | 3997 | struct nexthop *nexthop; |
d62a17ae | 3998 | |
915902cb DS |
3999 | if (!table) |
4000 | return; | |
d62a17ae | 4001 | |
6d81b590 MS |
4002 | if (IS_ZEBRA_DEBUG_RIB) |
4003 | zlog_debug("%s: starting", __func__); | |
4004 | ||
915902cb | 4005 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
a2addae8 | 4006 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d4644d41 | 4007 | |
915902cb DS |
4008 | if (IS_ZEBRA_DEBUG_RIB) |
4009 | route_entry_dump(&rn->p, NULL, re); | |
4010 | ||
4011 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
4012 | continue; | |
4013 | ||
4014 | if (!CHECK_FLAG(re->flags, ZEBRA_FLAG_SELFROUTE)) | |
4015 | continue; | |
4016 | ||
d4644d41 DS |
4017 | /* |
4018 | * If routes are older than startup_time then | |
4019 | * we know we read them in from the kernel. | |
4020 | * As such we can safely remove them. | |
4021 | */ | |
4022 | if (zrouter.startup_time < re->uptime) | |
4023 | continue; | |
4024 | ||
915902cb DS |
4025 | /* |
4026 | * So we are starting up and have received | |
4027 | * routes from the kernel that we have installed | |
4028 | * from a previous run of zebra but not cleaned | |
4029 | * up ( say a kill -9 ) | |
4030 | * But since we haven't actually installed | |
4031 | * them yet( we received them from the kernel ) | |
4032 | * we don't think they are active. | |
4033 | * So let's pretend they are active to actually | |
4034 | * remove them. | |
4035 | * In all honesty I'm not sure if we should | |
4036 | * mark them as active when we receive them | |
4037 | * This is startup only so probably ok. | |
4038 | * | |
4039 | * If we ever decide to move rib_sweep_table | |
4040 | * to a different spot (ie startup ) | |
4041 | * this decision needs to be revisited | |
4042 | */ | |
677c1dd5 | 4043 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 4044 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
915902cb DS |
4045 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
4046 | ||
0c555cc6 DS |
4047 | rib_uninstall_kernel(rn, re); |
4048 | rib_delnode(rn, re); | |
915902cb DS |
4049 | } |
4050 | } | |
6d81b590 MS |
4051 | |
4052 | if (IS_ZEBRA_DEBUG_RIB) | |
4053 | zlog_debug("%s: ends", __func__); | |
718e3744 | 4054 | } |
4055 | ||
4056 | /* Sweep all RIB tables. */ | |
cc9f21da | 4057 | void rib_sweep_route(struct thread *t) |
718e3744 | 4058 | { |
d62a17ae | 4059 | struct vrf *vrf; |
4060 | struct zebra_vrf *zvrf; | |
78104b9b | 4061 | |
a2addae8 | 4062 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
915902cb DS |
4063 | if ((zvrf = vrf->info) == NULL) |
4064 | continue; | |
4065 | ||
d62a17ae | 4066 | rib_sweep_table(zvrf->table[AFI_IP][SAFI_UNICAST]); |
4067 | rib_sweep_table(zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4068 | } | |
95a29032 | 4069 | |
89272910 | 4070 | zebra_router_sweep_route(); |
38e40db1 | 4071 | zebra_router_sweep_nhgs(); |
718e3744 | 4072 | } |
2ea1ab1c VT |
4073 | |
4074 | /* Remove specific by protocol routes from 'table'. */ | |
d7c0a89a | 4075 | unsigned long rib_score_proto_table(uint8_t proto, unsigned short instance, |
47a08aa9 | 4076 | struct route_table *table) |
d62a17ae | 4077 | { |
4078 | struct route_node *rn; | |
4079 | struct route_entry *re; | |
4080 | struct route_entry *next; | |
4081 | unsigned long n = 0; | |
4082 | ||
4083 | if (table) | |
4084 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) | |
a2addae8 | 4085 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 4086 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
4087 | continue; | |
4088 | if (re->type == proto | |
4089 | && re->instance == instance) { | |
4090 | rib_delnode(rn, re); | |
4091 | n++; | |
4092 | } | |
4093 | } | |
4094 | return n; | |
2ea1ab1c VT |
4095 | } |
4096 | ||
4097 | /* Remove specific by protocol routes. */ | |
d7c0a89a | 4098 | unsigned long rib_score_proto(uint8_t proto, unsigned short instance) |
2ea1ab1c | 4099 | { |
d62a17ae | 4100 | struct vrf *vrf; |
4101 | struct zebra_vrf *zvrf; | |
d8612e65 | 4102 | struct other_route_table *ort; |
d62a17ae | 4103 | unsigned long cnt = 0; |
78104b9b | 4104 | |
d8612e65 DS |
4105 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
4106 | zvrf = vrf->info; | |
4107 | if (!zvrf) | |
4108 | continue; | |
78104b9b | 4109 | |
d8612e65 DS |
4110 | cnt += rib_score_proto_table(proto, instance, |
4111 | zvrf->table[AFI_IP][SAFI_UNICAST]) | |
4112 | + rib_score_proto_table( | |
4113 | proto, instance, | |
4114 | zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4115 | ||
81fddbe7 | 4116 | frr_each(otable, &zvrf->other_tables, ort) cnt += |
d8612e65 DS |
4117 | rib_score_proto_table(proto, instance, ort->table); |
4118 | } | |
47a08aa9 | 4119 | |
d62a17ae | 4120 | return cnt; |
2ea1ab1c VT |
4121 | } |
4122 | ||
718e3744 | 4123 | /* Close RIB and clean up kernel routes. */ |
d62a17ae | 4124 | void rib_close_table(struct route_table *table) |
718e3744 | 4125 | { |
d62a17ae | 4126 | struct route_node *rn; |
630d5962 | 4127 | struct rib_table_info *info; |
5f7a4718 | 4128 | rib_dest_t *dest; |
718e3744 | 4129 | |
1e9f448f DS |
4130 | if (!table) |
4131 | return; | |
9fd92e3c | 4132 | |
6ca30e9e | 4133 | info = route_table_get_info(table); |
5adc2528 | 4134 | |
5f7a4718 DS |
4135 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
4136 | dest = rib_dest_from_rnode(rn); | |
1e9f448f | 4137 | |
5f7a4718 | 4138 | if (dest && dest->selected_fib) { |
1e9f448f DS |
4139 | if (info->safi == SAFI_UNICAST) |
4140 | hook_call(rib_update, rn, NULL); | |
4141 | ||
3cdba47a DS |
4142 | rib_uninstall_kernel(rn, dest->selected_fib); |
4143 | dest->selected_fib = NULL; | |
1e9f448f | 4144 | } |
5f7a4718 | 4145 | } |
718e3744 | 4146 | } |
4147 | ||
9bd9717b MS |
4148 | /* |
4149 | * Handler for async dataplane results after a pseudowire installation | |
4150 | */ | |
4151 | static int handle_pw_result(struct zebra_dplane_ctx *ctx) | |
4152 | { | |
9bd9717b MS |
4153 | struct zebra_pw *pw; |
4154 | struct zebra_vrf *vrf; | |
4155 | ||
4156 | /* The pseudowire code assumes success - we act on an error | |
4157 | * result for installation attempts here. | |
4158 | */ | |
4159 | if (dplane_ctx_get_op(ctx) != DPLANE_OP_PW_INSTALL) | |
4160 | goto done; | |
4161 | ||
4162 | if (dplane_ctx_get_status(ctx) != ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
4163 | vrf = zebra_vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); | |
7c7ef4a8 | 4164 | pw = zebra_pw_find(vrf, dplane_ctx_get_ifname(ctx)); |
9bd9717b | 4165 | if (pw) |
fd563cc7 KS |
4166 | zebra_pw_install_failure(pw, |
4167 | dplane_ctx_get_pw_status(ctx)); | |
9bd9717b MS |
4168 | } |
4169 | ||
4170 | done: | |
a20e6c32 | 4171 | dplane_ctx_fini(&ctx); |
9bd9717b | 4172 | |
9f2d0354 | 4173 | return 0; |
9bd9717b MS |
4174 | } |
4175 | ||
4176 | ||
7cdb1a84 | 4177 | /* |
d37f4d6c MS |
4178 | * Handle results from the dataplane system. Dequeue update context |
4179 | * structs, dispatch to appropriate internal handlers. | |
7cdb1a84 | 4180 | */ |
cc9f21da | 4181 | static void rib_process_dplane_results(struct thread *thread) |
7cdb1a84 | 4182 | { |
25779064 | 4183 | struct zebra_dplane_ctx *ctx; |
4c206c8f | 4184 | struct dplane_ctx_q ctxlist; |
2fc69f03 | 4185 | bool shut_p = false; |
4c206c8f MS |
4186 | |
4187 | /* Dequeue a list of completed updates with one lock/unlock cycle */ | |
7cdb1a84 MS |
4188 | |
4189 | do { | |
4c206c8f MS |
4190 | TAILQ_INIT(&ctxlist); |
4191 | ||
7cdb1a84 | 4192 | /* Take lock controlling queue of results */ |
00dffa8c | 4193 | frr_with_mutex(&dplane_mutex) { |
d37f4d6c | 4194 | /* Dequeue list of context structs */ |
4c206c8f | 4195 | dplane_ctx_list_append(&ctxlist, &rib_dplane_q); |
7cdb1a84 | 4196 | } |
7cdb1a84 | 4197 | |
4c206c8f MS |
4198 | /* Dequeue context block */ |
4199 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4200 | ||
4201 | /* If we've emptied the results queue, we're done */ | |
4202 | if (ctx == NULL) | |
7cdb1a84 | 4203 | break; |
7cdb1a84 | 4204 | |
2fc69f03 MS |
4205 | /* If zebra is shutting down, avoid processing results, |
4206 | * just drain the results queue. | |
4207 | */ | |
4208 | shut_p = atomic_load_explicit(&zrouter.in_shutdown, | |
4209 | memory_order_relaxed); | |
4210 | if (shut_p) { | |
4211 | while (ctx) { | |
4212 | dplane_ctx_fini(&ctx); | |
4213 | ||
4214 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4215 | } | |
4216 | ||
4217 | continue; | |
4218 | } | |
4219 | ||
1247efcc DL |
4220 | #ifdef HAVE_SCRIPTING |
4221 | char *script_name = frrscript_names_get_script_name( | |
4222 | ZEBRA_ON_RIB_PROCESS_HOOK_CALL); | |
4223 | ||
4224 | int ret = 1; | |
4225 | struct frrscript *fs; | |
4226 | ||
4227 | if (script_name) { | |
4228 | fs = frrscript_new(script_name); | |
4229 | if (fs) | |
4230 | ret = frrscript_load( | |
4231 | fs, ZEBRA_ON_RIB_PROCESS_HOOK_CALL, | |
4232 | NULL); | |
4233 | } | |
4234 | #endif /* HAVE_SCRIPTING */ | |
4235 | ||
4c206c8f | 4236 | while (ctx) { |
1247efcc DL |
4237 | |
4238 | #ifdef HAVE_SCRIPTING | |
4239 | if (ret == 0) | |
4240 | frrscript_call(fs, | |
4241 | ZEBRA_ON_RIB_PROCESS_HOOK_CALL, | |
4242 | ("ctx", ctx)); | |
4243 | #endif /* HAVE_SCRIPTING */ | |
4244 | ||
d37f4d6c MS |
4245 | switch (dplane_ctx_get_op(ctx)) { |
4246 | case DPLANE_OP_ROUTE_INSTALL: | |
4247 | case DPLANE_OP_ROUTE_UPDATE: | |
4248 | case DPLANE_OP_ROUTE_DELETE: | |
188a00e0 MS |
4249 | { |
4250 | /* Bit of special case for route updates | |
4251 | * that were generated by async notifications: | |
4252 | * we don't want to continue processing these | |
4253 | * in the rib. | |
4254 | */ | |
4255 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4256 | rib_process_result(ctx); | |
4257 | else | |
4258 | dplane_ctx_fini(&ctx); | |
4259 | } | |
4260 | break; | |
d37f4d6c | 4261 | |
54818e3b MS |
4262 | case DPLANE_OP_ROUTE_NOTIFY: |
4263 | rib_process_dplane_notify(ctx); | |
d37f4d6c MS |
4264 | break; |
4265 | ||
9865e1c3 SW |
4266 | case DPLANE_OP_NH_INSTALL: |
4267 | case DPLANE_OP_NH_UPDATE: | |
4268 | case DPLANE_OP_NH_DELETE: | |
4269 | zebra_nhg_dplane_result(ctx); | |
4270 | break; | |
4271 | ||
d37f4d6c MS |
4272 | case DPLANE_OP_LSP_INSTALL: |
4273 | case DPLANE_OP_LSP_UPDATE: | |
4274 | case DPLANE_OP_LSP_DELETE: | |
188a00e0 MS |
4275 | { |
4276 | /* Bit of special case for LSP updates | |
4277 | * that were generated by async notifications: | |
4278 | * we don't want to continue processing these. | |
4279 | */ | |
4280 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4281 | zebra_mpls_lsp_dplane_result(ctx); | |
4282 | else | |
4283 | dplane_ctx_fini(&ctx); | |
4284 | } | |
4285 | break; | |
d37f4d6c | 4286 | |
104e3ad9 MS |
4287 | case DPLANE_OP_LSP_NOTIFY: |
4288 | zebra_mpls_process_dplane_notify(ctx); | |
d37f4d6c MS |
4289 | break; |
4290 | ||
9bd9717b MS |
4291 | case DPLANE_OP_PW_INSTALL: |
4292 | case DPLANE_OP_PW_UNINSTALL: | |
4293 | handle_pw_result(ctx); | |
4294 | break; | |
4295 | ||
cf363e1b MS |
4296 | case DPLANE_OP_SYS_ROUTE_ADD: |
4297 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
4298 | /* No further processing in zebra for these. */ | |
4299 | dplane_ctx_fini(&ctx); | |
4300 | break; | |
4301 | ||
036d93c0 MS |
4302 | case DPLANE_OP_MAC_INSTALL: |
4303 | case DPLANE_OP_MAC_DELETE: | |
4304 | zebra_vxlan_handle_result(ctx); | |
4305 | break; | |
4306 | ||
f62e5480 JU |
4307 | case DPLANE_OP_RULE_ADD: |
4308 | case DPLANE_OP_RULE_DELETE: | |
4309 | case DPLANE_OP_RULE_UPDATE: | |
5162e000 PG |
4310 | case DPLANE_OP_IPTABLE_ADD: |
4311 | case DPLANE_OP_IPTABLE_DELETE: | |
ef524230 PG |
4312 | case DPLANE_OP_IPSET_ADD: |
4313 | case DPLANE_OP_IPSET_DELETE: | |
4314 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
4315 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
f62e5480 JU |
4316 | zebra_pbr_dplane_result(ctx); |
4317 | break; | |
4318 | ||
d166308b MS |
4319 | case DPLANE_OP_INTF_ADDR_ADD: |
4320 | case DPLANE_OP_INTF_ADDR_DEL: | |
4321 | zebra_if_addr_update_ctx(ctx); | |
4322 | break; | |
4323 | ||
cd787a8a MS |
4324 | case DPLANE_OP_INTF_NETCONFIG: |
4325 | zebra_if_netconf_update_ctx(ctx); | |
4326 | break; | |
4327 | ||
931fa60c MS |
4328 | /* Some op codes not handled here */ |
4329 | case DPLANE_OP_ADDR_INSTALL: | |
4330 | case DPLANE_OP_ADDR_UNINSTALL: | |
4331 | case DPLANE_OP_NEIGH_INSTALL: | |
4332 | case DPLANE_OP_NEIGH_UPDATE: | |
4333 | case DPLANE_OP_NEIGH_DELETE: | |
0a27a2fe PG |
4334 | case DPLANE_OP_NEIGH_IP_INSTALL: |
4335 | case DPLANE_OP_NEIGH_IP_DELETE: | |
0bbd4ff4 MS |
4336 | case DPLANE_OP_VTEP_ADD: |
4337 | case DPLANE_OP_VTEP_DELETE: | |
d68e74b4 | 4338 | case DPLANE_OP_NEIGH_DISCOVER: |
c60522f7 | 4339 | case DPLANE_OP_BR_PORT_UPDATE: |
e18747a9 | 4340 | case DPLANE_OP_NEIGH_TABLE_UPDATE: |
62b4b7e4 | 4341 | case DPLANE_OP_GRE_SET: |
931fa60c | 4342 | case DPLANE_OP_NONE: |
d37f4d6c MS |
4343 | /* Don't expect this: just return the struct? */ |
4344 | dplane_ctx_fini(&ctx); | |
4345 | break; | |
931fa60c | 4346 | |
d37f4d6c | 4347 | } /* Dispatch by op code */ |
4c206c8f MS |
4348 | |
4349 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4350 | } | |
4351 | ||
5709131c | 4352 | } while (1); |
7cdb1a84 MS |
4353 | } |
4354 | ||
4355 | /* | |
4356 | * Results are returned from the dataplane subsystem, in the context of | |
1bcea841 | 4357 | * the dataplane pthread. We enqueue the results here for processing by |
7cdb1a84 MS |
4358 | * the main thread later. |
4359 | */ | |
4c206c8f | 4360 | static int rib_dplane_results(struct dplane_ctx_q *ctxlist) |
7cdb1a84 MS |
4361 | { |
4362 | /* Take lock controlling queue of results */ | |
00dffa8c | 4363 | frr_with_mutex(&dplane_mutex) { |
4c206c8f MS |
4364 | /* Enqueue context blocks */ |
4365 | dplane_ctx_list_append(&rib_dplane_q, ctxlist); | |
7cdb1a84 | 4366 | } |
7cdb1a84 | 4367 | |
4c206c8f | 4368 | /* Ensure event is signalled to zebra main pthread */ |
3801e764 | 4369 | thread_add_event(zrouter.master, rib_process_dplane_results, NULL, 0, |
7cdb1a84 MS |
4370 | &t_dplane); |
4371 | ||
5709131c | 4372 | return 0; |
7cdb1a84 MS |
4373 | } |
4374 | ||
eaa2716d SW |
4375 | /* |
4376 | * Ensure there are no empty slots in the route_info array. | |
4377 | * Every route type in zebra should be present there. | |
4378 | */ | |
4379 | static void check_route_info(void) | |
4380 | { | |
4381 | int len = array_size(route_info); | |
4382 | ||
4383 | /* | |
4384 | * ZEBRA_ROUTE_SYSTEM is special cased since | |
4385 | * its key is 0 anyway. | |
4386 | * | |
4387 | * ZEBRA_ROUTE_ALL is also ignored. | |
4388 | */ | |
4389 | for (int i = 0; i < len; i++) { | |
16d91fce DS |
4390 | assert(route_info[i].key >= ZEBRA_ROUTE_SYSTEM && |
4391 | route_info[i].key < ZEBRA_ROUTE_MAX); | |
8dc7a759 | 4392 | assert(route_info[i].meta_q_map < MQ_SIZE); |
eaa2716d SW |
4393 | } |
4394 | } | |
4395 | ||
718e3744 | 4396 | /* Routing information base initialize. */ |
d62a17ae | 4397 | void rib_init(void) |
718e3744 | 4398 | { |
eaa2716d SW |
4399 | check_route_info(); |
4400 | ||
2561d12e | 4401 | rib_queue_init(); |
7cdb1a84 MS |
4402 | |
4403 | /* Init dataplane, and register for results */ | |
4404 | pthread_mutex_init(&dplane_mutex, NULL); | |
4405 | TAILQ_INIT(&rib_dplane_q); | |
4c206c8f | 4406 | zebra_dplane_init(rib_dplane_results); |
718e3744 | 4407 | } |
0915bb0c AS |
4408 | |
4409 | /* | |
4410 | * vrf_id_get_next | |
4411 | * | |
4412 | * Get the first vrf id that is greater than the given vrf id if any. | |
4413 | * | |
2951a7a4 | 4414 | * Returns true if a vrf id was found, false otherwise. |
0915bb0c | 4415 | */ |
d62a17ae | 4416 | static inline int vrf_id_get_next(vrf_id_t vrf_id, vrf_id_t *next_id_p) |
0915bb0c | 4417 | { |
d62a17ae | 4418 | struct vrf *vrf; |
b72ede27 | 4419 | |
d62a17ae | 4420 | vrf = vrf_lookup_by_id(vrf_id); |
4421 | if (vrf) { | |
4422 | vrf = RB_NEXT(vrf_id_head, vrf); | |
4423 | if (vrf) { | |
4424 | *next_id_p = vrf->vrf_id; | |
4425 | return 1; | |
4426 | } | |
4427 | } | |
0915bb0c | 4428 | |
d62a17ae | 4429 | return 0; |
0915bb0c AS |
4430 | } |
4431 | ||
4432 | /* | |
4433 | * rib_tables_iter_next | |
4434 | * | |
4435 | * Returns the next table in the iteration. | |
4436 | */ | |
d62a17ae | 4437 | struct route_table *rib_tables_iter_next(rib_tables_iter_t *iter) |
4438 | { | |
4439 | struct route_table *table; | |
4440 | ||
4441 | /* | |
4442 | * Array that helps us go over all AFI/SAFI combinations via one | |
4443 | * index. | |
4444 | */ | |
2b64873d | 4445 | static const struct { |
d62a17ae | 4446 | afi_t afi; |
4447 | safi_t safi; | |
4448 | } afi_safis[] = { | |
4449 | {AFI_IP, SAFI_UNICAST}, {AFI_IP, SAFI_MULTICAST}, | |
4450 | {AFI_IP, SAFI_LABELED_UNICAST}, {AFI_IP6, SAFI_UNICAST}, | |
4451 | {AFI_IP6, SAFI_MULTICAST}, {AFI_IP6, SAFI_LABELED_UNICAST}, | |
4452 | }; | |
4453 | ||
4454 | table = NULL; | |
4455 | ||
4456 | switch (iter->state) { | |
4457 | ||
4458 | case RIB_TABLES_ITER_S_INIT: | |
4459 | iter->vrf_id = VRF_DEFAULT; | |
4460 | iter->afi_safi_ix = -1; | |
4461 | ||
4462 | /* Fall through */ | |
4463 | ||
4464 | case RIB_TABLES_ITER_S_ITERATING: | |
4465 | iter->afi_safi_ix++; | |
4466 | while (1) { | |
4467 | ||
4468 | while (iter->afi_safi_ix | |
7e3a1ec7 | 4469 | < (int)array_size(afi_safis)) { |
d62a17ae | 4470 | table = zebra_vrf_table( |
4471 | afi_safis[iter->afi_safi_ix].afi, | |
4472 | afi_safis[iter->afi_safi_ix].safi, | |
4473 | iter->vrf_id); | |
4474 | if (table) | |
4475 | break; | |
4476 | ||
4477 | iter->afi_safi_ix++; | |
4478 | } | |
4479 | ||
4480 | /* | |
4481 | * Found another table in this vrf. | |
4482 | */ | |
4483 | if (table) | |
4484 | break; | |
4485 | ||
4486 | /* | |
4487 | * Done with all tables in the current vrf, go to the | |
4488 | * next | |
4489 | * one. | |
4490 | */ | |
4491 | if (!vrf_id_get_next(iter->vrf_id, &iter->vrf_id)) | |
4492 | break; | |
4493 | ||
4494 | iter->afi_safi_ix = 0; | |
4495 | } | |
0915bb0c | 4496 | |
0915bb0c AS |
4497 | break; |
4498 | ||
d62a17ae | 4499 | case RIB_TABLES_ITER_S_DONE: |
4500 | return NULL; | |
0915bb0c AS |
4501 | } |
4502 | ||
d62a17ae | 4503 | if (table) |
4504 | iter->state = RIB_TABLES_ITER_S_ITERATING; | |
4505 | else | |
4506 | iter->state = RIB_TABLES_ITER_S_DONE; | |
0915bb0c | 4507 | |
d62a17ae | 4508 | return table; |
0915bb0c | 4509 | } |