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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)); |
0d0f516c | 79 | DEFINE_HOOK(rib_shutdown, (struct route_node * rn), (rn)); |
80 | ||
4f8ea50c | 81 | |
014e732d DS |
82 | /* Meta Q's specific names */ |
83 | enum meta_queue_indexes { | |
84 | META_QUEUE_NHG, | |
85 | META_QUEUE_EVPN, | |
d7ac4c4d | 86 | META_QUEUE_EARLY_ROUTE, |
53216dff | 87 | META_QUEUE_EARLY_LABEL, |
014e732d DS |
88 | META_QUEUE_CONNECTED, |
89 | META_QUEUE_KERNEL, | |
90 | META_QUEUE_STATIC, | |
91 | META_QUEUE_NOTBGP, | |
92 | META_QUEUE_BGP, | |
93 | META_QUEUE_OTHER, | |
94 | }; | |
95 | ||
718e3744 | 96 | /* Each route type's string and default distance value. */ |
d62a17ae | 97 | static const struct { |
98 | int key; | |
8dc7a759 | 99 | uint8_t distance; |
014e732d | 100 | enum meta_queue_indexes meta_q_map; |
d62a17ae | 101 | } route_info[ZEBRA_ROUTE_MAX] = { |
014e732d DS |
102 | [ZEBRA_ROUTE_NHG] = {ZEBRA_ROUTE_NHG, 255 /* Unneeded for nhg's */, |
103 | META_QUEUE_NHG}, | |
57a55245 | 104 | [ZEBRA_ROUTE_SYSTEM] = {ZEBRA_ROUTE_SYSTEM, 0, META_QUEUE_KERNEL}, |
014e732d DS |
105 | [ZEBRA_ROUTE_KERNEL] = {ZEBRA_ROUTE_KERNEL, 0, META_QUEUE_KERNEL}, |
106 | [ZEBRA_ROUTE_CONNECT] = {ZEBRA_ROUTE_CONNECT, 0, META_QUEUE_CONNECTED}, | |
107 | [ZEBRA_ROUTE_STATIC] = {ZEBRA_ROUTE_STATIC, 1, META_QUEUE_STATIC}, | |
108 | [ZEBRA_ROUTE_RIP] = {ZEBRA_ROUTE_RIP, 120, META_QUEUE_NOTBGP}, | |
109 | [ZEBRA_ROUTE_RIPNG] = {ZEBRA_ROUTE_RIPNG, 120, META_QUEUE_NOTBGP}, | |
110 | [ZEBRA_ROUTE_OSPF] = {ZEBRA_ROUTE_OSPF, 110, META_QUEUE_NOTBGP}, | |
111 | [ZEBRA_ROUTE_OSPF6] = {ZEBRA_ROUTE_OSPF6, 110, META_QUEUE_NOTBGP}, | |
112 | [ZEBRA_ROUTE_ISIS] = {ZEBRA_ROUTE_ISIS, 115, META_QUEUE_NOTBGP}, | |
113 | [ZEBRA_ROUTE_BGP] = {ZEBRA_ROUTE_BGP, 20 /* IBGP is 200. */, | |
114 | META_QUEUE_BGP}, | |
115 | [ZEBRA_ROUTE_PIM] = {ZEBRA_ROUTE_PIM, 255, META_QUEUE_OTHER}, | |
116 | [ZEBRA_ROUTE_EIGRP] = {ZEBRA_ROUTE_EIGRP, 90, META_QUEUE_NOTBGP}, | |
117 | [ZEBRA_ROUTE_NHRP] = {ZEBRA_ROUTE_NHRP, 10, META_QUEUE_NOTBGP}, | |
118 | [ZEBRA_ROUTE_HSLS] = {ZEBRA_ROUTE_HSLS, 255, META_QUEUE_OTHER}, | |
119 | [ZEBRA_ROUTE_OLSR] = {ZEBRA_ROUTE_OLSR, 255, META_QUEUE_OTHER}, | |
120 | [ZEBRA_ROUTE_TABLE] = {ZEBRA_ROUTE_TABLE, 150, META_QUEUE_STATIC}, | |
121 | [ZEBRA_ROUTE_LDP] = {ZEBRA_ROUTE_LDP, 150, META_QUEUE_OTHER}, | |
122 | [ZEBRA_ROUTE_VNC] = {ZEBRA_ROUTE_VNC, 20, META_QUEUE_BGP}, | |
123 | [ZEBRA_ROUTE_VNC_DIRECT] = {ZEBRA_ROUTE_VNC_DIRECT, 20, META_QUEUE_BGP}, | |
124 | [ZEBRA_ROUTE_VNC_DIRECT_RH] = {ZEBRA_ROUTE_VNC_DIRECT_RH, 20, | |
125 | META_QUEUE_BGP}, | |
126 | [ZEBRA_ROUTE_BGP_DIRECT] = {ZEBRA_ROUTE_BGP_DIRECT, 20, META_QUEUE_BGP}, | |
127 | [ZEBRA_ROUTE_BGP_DIRECT_EXT] = {ZEBRA_ROUTE_BGP_DIRECT_EXT, 20, | |
128 | META_QUEUE_BGP}, | |
129 | [ZEBRA_ROUTE_BABEL] = {ZEBRA_ROUTE_BABEL, 100, META_QUEUE_NOTBGP}, | |
130 | [ZEBRA_ROUTE_SHARP] = {ZEBRA_ROUTE_SHARP, 150, META_QUEUE_OTHER}, | |
131 | [ZEBRA_ROUTE_PBR] = {ZEBRA_ROUTE_PBR, 200, META_QUEUE_OTHER}, | |
132 | [ZEBRA_ROUTE_BFD] = {ZEBRA_ROUTE_BFD, 255, META_QUEUE_OTHER}, | |
133 | [ZEBRA_ROUTE_OPENFABRIC] = {ZEBRA_ROUTE_OPENFABRIC, 115, | |
134 | META_QUEUE_NOTBGP}, | |
135 | [ZEBRA_ROUTE_VRRP] = {ZEBRA_ROUTE_VRRP, 255, META_QUEUE_OTHER}, | |
136 | [ZEBRA_ROUTE_SRTE] = {ZEBRA_ROUTE_SRTE, 255, META_QUEUE_OTHER}, | |
137 | [ZEBRA_ROUTE_ALL] = {ZEBRA_ROUTE_ALL, 255, META_QUEUE_OTHER}, | |
d6abd8b0 | 138 | /* Any new route type added to zebra, should be mirrored here */ |
c710b277 | 139 | |
d62a17ae | 140 | /* no entry/default: 150 */ |
718e3744 | 141 | }; |
6b0655a2 | 142 | |
04bec7b2 MS |
143 | /* Wrapper struct for nhg workqueue items; a 'ctx' is an incoming update |
144 | * from the OS, and an 'nhe' is a nhe update. | |
145 | */ | |
146 | struct wq_nhg_wrapper { | |
147 | int type; | |
148 | union { | |
149 | struct nhg_ctx *ctx; | |
150 | struct nhg_hash_entry *nhe; | |
151 | } u; | |
152 | }; | |
153 | ||
154 | #define WQ_NHG_WRAPPER_TYPE_CTX 0x01 | |
155 | #define WQ_NHG_WRAPPER_TYPE_NHG 0x02 | |
156 | ||
32367e7a MS |
157 | /* Wrapper structs for evpn/vxlan workqueue items. */ |
158 | struct wq_evpn_wrapper { | |
159 | int type; | |
160 | bool add_p; | |
161 | vrf_id_t vrf_id; | |
162 | bool esr_rxed; | |
163 | uint8_t df_alg; | |
164 | uint16_t df_pref; | |
7f7e49d1 MS |
165 | uint32_t flags; |
166 | uint32_t seq; | |
32367e7a | 167 | esi_t esi; |
7f7e49d1 | 168 | vni_t vni; |
32367e7a | 169 | struct ipaddr ip; |
7f7e49d1 | 170 | struct ethaddr macaddr; |
32367e7a | 171 | struct prefix prefix; |
7f7e49d1 | 172 | struct in_addr vtep_ip; |
32367e7a MS |
173 | }; |
174 | ||
7f7e49d1 MS |
175 | #define WQ_EVPN_WRAPPER_TYPE_VRFROUTE 0x01 |
176 | #define WQ_EVPN_WRAPPER_TYPE_REM_ES 0x02 | |
177 | #define WQ_EVPN_WRAPPER_TYPE_REM_MACIP 0x03 | |
7e5b0b2b | 178 | #define WQ_EVPN_WRAPPER_TYPE_REM_VTEP 0x04 |
32367e7a | 179 | |
53216dff DS |
180 | enum wq_label_types { |
181 | WQ_LABEL_FTN_UNINSTALL, | |
182 | WQ_LABEL_LABELS_PROCESS, | |
183 | }; | |
184 | ||
185 | struct wq_label_wrapper { | |
186 | enum wq_label_types type; | |
187 | vrf_id_t vrf_id; | |
188 | ||
189 | struct prefix p; | |
190 | enum lsp_types_t ltype; | |
191 | uint8_t route_type; | |
192 | uint8_t route_instance; | |
193 | ||
194 | bool add_p; | |
195 | struct zapi_labels zl; | |
196 | ||
197 | int afi; | |
198 | }; | |
199 | ||
d7ac4c4d DS |
200 | static void rib_addnode(struct route_node *rn, struct route_entry *re, |
201 | int process); | |
202 | ||
9d75e309 DL |
203 | /* %pRN is already a printer for route_nodes that just prints the prefix */ |
204 | #ifdef _FRR_ATTRIBUTE_PRINTFRR | |
205 | #pragma FRR printfrr_ext "%pZN" (struct route_node *) | |
206 | #endif | |
207 | ||
014e732d | 208 | static const char *subqueue2str(enum meta_queue_indexes index) |
7a96ccc7 DS |
209 | { |
210 | switch (index) { | |
4bbbd1f6 | 211 | case META_QUEUE_NHG: |
7a96ccc7 | 212 | return "NHG Objects"; |
4bbbd1f6 | 213 | case META_QUEUE_EVPN: |
7a96ccc7 | 214 | return "EVPN/VxLan Objects"; |
d7ac4c4d DS |
215 | case META_QUEUE_EARLY_ROUTE: |
216 | return "Early Route Processing"; | |
53216dff DS |
217 | case META_QUEUE_EARLY_LABEL: |
218 | return "Early Label Handling"; | |
014e732d | 219 | case META_QUEUE_CONNECTED: |
7a96ccc7 | 220 | return "Connected Routes"; |
014e732d | 221 | case META_QUEUE_KERNEL: |
7a96ccc7 | 222 | return "Kernel Routes"; |
014e732d | 223 | case META_QUEUE_STATIC: |
7a96ccc7 | 224 | return "Static Routes"; |
014e732d | 225 | case META_QUEUE_NOTBGP: |
7a96ccc7 | 226 | return "RIP/OSPF/ISIS/EIGRP/NHRP Routes"; |
014e732d | 227 | case META_QUEUE_BGP: |
7a96ccc7 | 228 | return "BGP Routes"; |
014e732d | 229 | case META_QUEUE_OTHER: |
7a96ccc7 DS |
230 | return "Other Routes"; |
231 | } | |
232 | ||
233 | return "Unknown"; | |
234 | } | |
235 | ||
9d75e309 DL |
236 | printfrr_ext_autoreg_p("ZN", printfrr_zebra_node); |
237 | static ssize_t printfrr_zebra_node(struct fbuf *buf, struct printfrr_eargs *ea, | |
238 | const void *ptr) | |
2263a412 | 239 | { |
9d75e309 DL |
240 | struct route_node *rn = (struct route_node *)ptr; |
241 | ssize_t rv = 0; | |
242 | ||
243 | /* just the table number? */ | |
244 | if (ea->fmt[0] == 't') { | |
245 | rib_dest_t *dest; | |
c2c02b76 DS |
246 | struct route_entry *re = NULL; |
247 | ||
9d75e309 | 248 | ea->fmt++; |
cb653491 | 249 | |
9d75e309 DL |
250 | if (!rn) |
251 | return bputch(buf, '!'); | |
c2c02b76 DS |
252 | |
253 | dest = rib_dest_from_rnode(rn); | |
254 | if (dest) | |
255 | re = re_list_first(&dest->routes); | |
256 | if (re) | |
9d75e309 DL |
257 | rv += bprintfrr(buf, "%u", re->table); |
258 | else | |
259 | rv += bputch(buf, '?'); | |
260 | ||
d62a17ae | 261 | } else { |
9d75e309 DL |
262 | char cbuf[PREFIX_STRLEN * 2 + 6]; |
263 | struct rib_table_info *info; | |
264 | ||
265 | if (!rn) | |
266 | return bputs(buf, "{(route_node *) NULL}"); | |
2263a412 | 267 | |
9d75e309 DL |
268 | srcdest_rnode2str(rn, cbuf, sizeof(cbuf)); |
269 | rv += bputs(buf, cbuf); | |
270 | ||
271 | info = srcdest_rnode_table_info(rn); | |
272 | if (info->safi == SAFI_MULTICAST) | |
273 | rv += bputs(buf, " (MRIB)"); | |
274 | } | |
275 | return rv; | |
2263a412 DL |
276 | } |
277 | ||
9d75e309 DL |
278 | #define rnode_debug(node, vrf_id, msg, ...) \ |
279 | zlog_debug("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
280 | ##__VA_ARGS__) | |
281 | ||
282 | #define rnode_info(node, vrf_id, msg, ...) \ | |
283 | zlog_info("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
284 | ##__VA_ARGS__) | |
285 | ||
61e6de9d DS |
286 | static char *_dump_re_status(const struct route_entry *re, char *buf, |
287 | size_t len) | |
288 | { | |
289 | if (re->status == 0) { | |
290 | snprintfrr(buf, len, "None "); | |
291 | return buf; | |
292 | } | |
293 | ||
294 | snprintfrr( | |
8d4665aa | 295 | buf, len, "%s%s%s%s%s%s%s%s", |
61e6de9d DS |
296 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED) ? "Removed " : "", |
297 | CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED) ? "Changed " : "", | |
298 | CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED) | |
299 | ? "Label Changed " | |
300 | : "", | |
301 | CHECK_FLAG(re->status, ROUTE_ENTRY_QUEUED) ? "Queued " : "", | |
8d4665aa DS |
302 | CHECK_FLAG(re->status, ROUTE_ENTRY_ROUTE_REPLACING) |
303 | ? "Replacing" | |
304 | : "", | |
61e6de9d DS |
305 | CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) ? "Installed " |
306 | : "", | |
307 | CHECK_FLAG(re->status, ROUTE_ENTRY_FAILED) ? "Failed " : "", | |
308 | CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG) ? "Fib NHG " | |
309 | : ""); | |
310 | return buf; | |
311 | } | |
312 | ||
fd289fc8 | 313 | uint8_t route_distance(int type) |
40c7bdb0 | 314 | { |
fd289fc8 | 315 | uint8_t distance; |
40c7bdb0 | 316 | |
d62a17ae | 317 | if ((unsigned)type >= array_size(route_info)) |
318 | distance = 150; | |
319 | else | |
320 | distance = route_info[type].distance; | |
40c7bdb0 | 321 | |
d62a17ae | 322 | return distance; |
40c7bdb0 | 323 | } |
324 | ||
d7c0a89a | 325 | int is_zebra_valid_kernel_table(uint32_t table_id) |
7a4bb9c5 | 326 | { |
8f500a1c | 327 | #ifdef linux |
d62a17ae | 328 | if ((table_id == RT_TABLE_UNSPEC) || (table_id == RT_TABLE_LOCAL) |
329 | || (table_id == RT_TABLE_COMPAT)) | |
330 | return 0; | |
8f500a1c RW |
331 | #endif |
332 | ||
d62a17ae | 333 | return 1; |
7a4bb9c5 DS |
334 | } |
335 | ||
d7c0a89a | 336 | int is_zebra_main_routing_table(uint32_t table_id) |
7a4bb9c5 | 337 | { |
c447ad08 | 338 | if (table_id == RT_TABLE_MAIN) |
d62a17ae | 339 | return 1; |
340 | return 0; | |
7a4bb9c5 DS |
341 | } |
342 | ||
86391e56 | 343 | int zebra_check_addr(const struct prefix *p) |
0aabccc0 | 344 | { |
d62a17ae | 345 | if (p->family == AF_INET) { |
d7c0a89a | 346 | uint32_t addr; |
0aabccc0 | 347 | |
d62a17ae | 348 | addr = p->u.prefix4.s_addr; |
349 | addr = ntohl(addr); | |
0aabccc0 | 350 | |
d62a17ae | 351 | if (IPV4_NET127(addr) || IN_CLASSD(addr) |
352 | || IPV4_LINKLOCAL(addr)) | |
353 | return 0; | |
354 | } | |
355 | if (p->family == AF_INET6) { | |
356 | if (IN6_IS_ADDR_LOOPBACK(&p->u.prefix6)) | |
357 | return 0; | |
358 | if (IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
359 | return 0; | |
360 | } | |
361 | return 1; | |
0aabccc0 DD |
362 | } |
363 | ||
5463ce26 MS |
364 | static void route_entry_attach_ref(struct route_entry *re, |
365 | struct nhg_hash_entry *new) | |
718e3744 | 366 | { |
0eb97b86 | 367 | re->nhe = new; |
5463ce26 | 368 | re->nhe_id = new->id; |
002930f7 | 369 | re->nhe_installed_id = 0; |
718e3744 | 370 | |
5463ce26 | 371 | zebra_nhg_increment_ref(new); |
718e3744 | 372 | } |
373 | ||
002930f7 | 374 | /* Replace (if 'new_nhghe') or clear (if that's NULL) an re's nhe. */ |
cd7108ba EDP |
375 | int route_entry_update_nhe(struct route_entry *re, |
376 | struct nhg_hash_entry *new_nhghe) | |
718e3744 | 377 | { |
5463ce26 | 378 | int ret = 0; |
002930f7 | 379 | struct nhg_hash_entry *old_nhg = NULL; |
718e3744 | 380 | |
cd7108ba | 381 | if (new_nhghe == NULL) { |
002930f7 MS |
382 | old_nhg = re->nhe; |
383 | ||
384 | re->nhe_id = 0; | |
385 | re->nhe_installed_id = 0; | |
c415d895 | 386 | re->nhe = NULL; |
5463ce26 MS |
387 | goto done; |
388 | } | |
718e3744 | 389 | |
1f655680 | 390 | if ((re->nhe_id != 0) && re->nhe && (re->nhe != new_nhghe)) { |
002930f7 MS |
391 | /* Capture previous nhg, if any */ |
392 | old_nhg = re->nhe; | |
718e3744 | 393 | |
cd7108ba | 394 | route_entry_attach_ref(re, new_nhghe); |
84a89a8d | 395 | } else if (!re->nhe) |
5463ce26 | 396 | /* This is the first time it's being attached */ |
cd7108ba | 397 | route_entry_attach_ref(re, new_nhghe); |
595db7f1 | 398 | |
5463ce26 | 399 | done: |
002930f7 MS |
400 | /* Detach / deref previous nhg */ |
401 | if (old_nhg) | |
402 | zebra_nhg_decrement_ref(old_nhg); | |
403 | ||
5463ce26 | 404 | return ret; |
595db7f1 | 405 | } |
406 | ||
2e8db20d EDP |
407 | void rib_handle_nhg_replace(struct nhg_hash_entry *old_entry, |
408 | struct nhg_hash_entry *new_entry) | |
1f655680 SW |
409 | { |
410 | struct zebra_router_table *zrt; | |
411 | struct route_node *rn; | |
412 | struct route_entry *re, *next; | |
413 | ||
414 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || IS_ZEBRA_DEBUG_NHG_DETAIL) | |
415 | zlog_debug("%s: replacing routes nhe (%u) OLD %p NEW %p", | |
2e8db20d | 416 | __func__, new_entry->id, new_entry, old_entry); |
1f655680 SW |
417 | |
418 | /* We have to do them ALL */ | |
419 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) { | |
420 | for (rn = route_top(zrt->table); rn; | |
421 | rn = srcdest_route_next(rn)) { | |
422 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
2e8db20d EDP |
423 | if (re->nhe && re->nhe == old_entry) |
424 | route_entry_update_nhe(re, new_entry); | |
1f655680 SW |
425 | } |
426 | } | |
427 | } | |
428 | } | |
429 | ||
d62a17ae | 430 | struct route_entry *rib_match(afi_t afi, safi_t safi, vrf_id_t vrf_id, |
bc77c3bb MS |
431 | const union g_addr *addr, |
432 | struct route_node **rn_out) | |
d62a17ae | 433 | { |
434 | struct prefix p; | |
435 | struct route_table *table; | |
436 | struct route_node *rn; | |
5f7a4718 | 437 | struct route_entry *match = NULL; |
d62a17ae | 438 | |
439 | /* Lookup table. */ | |
440 | table = zebra_vrf_table(afi, safi, vrf_id); | |
441 | if (!table) | |
442 | return 0; | |
443 | ||
6006b807 | 444 | memset(&p, 0, sizeof(p)); |
d62a17ae | 445 | p.family = afi; |
446 | if (afi == AFI_IP) { | |
447 | p.u.prefix4 = addr->ipv4; | |
936fbaef | 448 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 449 | } else { |
450 | p.u.prefix6 = addr->ipv6; | |
f4d81e55 | 451 | p.prefixlen = IPV6_MAX_BITLEN; |
d62a17ae | 452 | } |
718e3744 | 453 | |
c4efd0f4 | 454 | rn = route_node_match(table, &p); |
718e3744 | 455 | |
d62a17ae | 456 | while (rn) { |
5f7a4718 DS |
457 | rib_dest_t *dest; |
458 | ||
d62a17ae | 459 | route_unlock_node(rn); |
718e3744 | 460 | |
5f7a4718 | 461 | dest = rib_dest_from_rnode(rn); |
996c9314 LB |
462 | if (dest && dest->selected_fib |
463 | && !CHECK_FLAG(dest->selected_fib->status, | |
464 | ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 465 | match = dest->selected_fib; |
718e3744 | 466 | |
d62a17ae | 467 | /* If there is no selected route or matched route is EGP, go up |
468 | tree. */ | |
469 | if (!match) { | |
470 | do { | |
471 | rn = rn->parent; | |
472 | } while (rn && rn->info == NULL); | |
473 | if (rn) | |
474 | route_lock_node(rn); | |
475 | } else { | |
476 | if (match->type != ZEBRA_ROUTE_CONNECT) { | |
677c1dd5 DS |
477 | if (!CHECK_FLAG(match->status, |
478 | ROUTE_ENTRY_INSTALLED)) | |
d62a17ae | 479 | return NULL; |
480 | } | |
481 | ||
482 | if (rn_out) | |
483 | *rn_out = rn; | |
484 | return match; | |
485 | } | |
16814f96 | 486 | } |
d62a17ae | 487 | return NULL; |
488 | } | |
489 | ||
490 | struct route_entry *rib_match_ipv4_multicast(vrf_id_t vrf_id, | |
491 | struct in_addr addr, | |
492 | struct route_node **rn_out) | |
493 | { | |
494 | struct route_entry *re = NULL, *mre = NULL, *ure = NULL; | |
495 | struct route_node *m_rn = NULL, *u_rn = NULL; | |
496 | union g_addr gaddr = {.ipv4 = addr}; | |
497 | ||
526052fb | 498 | switch (zrouter.ipv4_multicast_mode) { |
d62a17ae | 499 | case MCAST_MRIB_ONLY: |
500 | return rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, | |
501 | rn_out); | |
502 | case MCAST_URIB_ONLY: | |
503 | return rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, rn_out); | |
504 | case MCAST_NO_CONFIG: | |
505 | case MCAST_MIX_MRIB_FIRST: | |
506 | re = mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, | |
507 | &m_rn); | |
508 | if (!mre) | |
509 | re = ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, | |
510 | &gaddr, &u_rn); | |
511 | break; | |
512 | case MCAST_MIX_DISTANCE: | |
513 | mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
514 | ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
515 | if (mre && ure) | |
516 | re = ure->distance < mre->distance ? ure : mre; | |
517 | else if (mre) | |
518 | re = mre; | |
519 | else if (ure) | |
520 | re = ure; | |
521 | break; | |
522 | case MCAST_MIX_PFXLEN: | |
523 | mre = rib_match(AFI_IP, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
524 | ure = rib_match(AFI_IP, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
525 | if (mre && ure) | |
526 | re = u_rn->p.prefixlen > m_rn->p.prefixlen ? ure : mre; | |
527 | else if (mre) | |
528 | re = mre; | |
529 | else if (ure) | |
530 | re = ure; | |
531 | break; | |
718e3744 | 532 | } |
33550aa8 | 533 | |
d62a17ae | 534 | if (rn_out) |
535 | *rn_out = (re == mre) ? m_rn : u_rn; | |
718e3744 | 536 | |
d62a17ae | 537 | if (IS_ZEBRA_DEBUG_RIB) { |
538 | char buf[BUFSIZ]; | |
539 | inet_ntop(AF_INET, &addr, buf, BUFSIZ); | |
4623d897 | 540 | |
bd47f3a3 JU |
541 | zlog_debug("%s: %s: vrf: %s(%u) found %s, using %s", __func__, |
542 | buf, vrf_id_to_name(vrf_id), vrf_id, | |
d62a17ae | 543 | mre ? (ure ? "MRIB+URIB" : "MRIB") |
544 | : ure ? "URIB" : "nothing", | |
545 | re == ure ? "URIB" : re == mre ? "MRIB" : "none"); | |
546 | } | |
547 | return re; | |
4623d897 DL |
548 | } |
549 | ||
425fd200 DL |
550 | struct route_entry *rib_match_ipv6_multicast(vrf_id_t vrf_id, |
551 | struct in6_addr addr, | |
552 | struct route_node **rn_out) | |
553 | { | |
554 | struct route_entry *re = NULL, *mre = NULL, *ure = NULL; | |
555 | struct route_node *m_rn = NULL, *u_rn = NULL; | |
556 | union g_addr gaddr = {.ipv6 = addr}; | |
557 | ||
558 | switch (zrouter.ipv4_multicast_mode) { | |
559 | case MCAST_MRIB_ONLY: | |
560 | return rib_match(AFI_IP6, SAFI_MULTICAST, vrf_id, &gaddr, | |
561 | rn_out); | |
562 | case MCAST_URIB_ONLY: | |
563 | return rib_match(AFI_IP6, SAFI_UNICAST, vrf_id, &gaddr, rn_out); | |
564 | case MCAST_NO_CONFIG: | |
565 | case MCAST_MIX_MRIB_FIRST: | |
566 | re = mre = rib_match(AFI_IP6, SAFI_MULTICAST, vrf_id, &gaddr, | |
567 | &m_rn); | |
568 | if (!mre) | |
569 | re = ure = rib_match(AFI_IP6, SAFI_UNICAST, vrf_id, | |
570 | &gaddr, &u_rn); | |
571 | break; | |
572 | case MCAST_MIX_DISTANCE: | |
573 | mre = rib_match(AFI_IP6, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
574 | ure = rib_match(AFI_IP6, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
575 | if (mre && ure) | |
576 | re = ure->distance < mre->distance ? ure : mre; | |
577 | else if (mre) | |
578 | re = mre; | |
579 | else if (ure) | |
580 | re = ure; | |
581 | break; | |
582 | case MCAST_MIX_PFXLEN: | |
583 | mre = rib_match(AFI_IP6, SAFI_MULTICAST, vrf_id, &gaddr, &m_rn); | |
584 | ure = rib_match(AFI_IP6, SAFI_UNICAST, vrf_id, &gaddr, &u_rn); | |
585 | if (mre && ure) | |
586 | re = u_rn->p.prefixlen > m_rn->p.prefixlen ? ure : mre; | |
587 | else if (mre) | |
588 | re = mre; | |
589 | else if (ure) | |
590 | re = ure; | |
591 | break; | |
592 | } | |
593 | ||
594 | if (rn_out) | |
595 | *rn_out = (re == mre) ? m_rn : u_rn; | |
596 | ||
597 | if (IS_ZEBRA_DEBUG_RIB) | |
598 | zlog_debug("%s: %pI6: vrf: %s(%u) found %s, using %s", __func__, | |
599 | &addr, vrf_id_to_name(vrf_id), vrf_id, | |
600 | mre ? (ure ? "MRIB+URIB" : "MRIB") | |
601 | : ure ? "URIB" : "nothing", | |
602 | re == ure ? "URIB" : re == mre ? "MRIB" : "none"); | |
603 | return re; | |
604 | } | |
605 | ||
d62a17ae | 606 | struct route_entry *rib_lookup_ipv4(struct prefix_ipv4 *p, vrf_id_t vrf_id) |
718e3744 | 607 | { |
d62a17ae | 608 | struct route_table *table; |
609 | struct route_node *rn; | |
5f7a4718 | 610 | struct route_entry *match = NULL; |
5f7a4718 | 611 | rib_dest_t *dest; |
718e3744 | 612 | |
d62a17ae | 613 | /* Lookup table. */ |
614 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
615 | if (!table) | |
616 | return 0; | |
718e3744 | 617 | |
d62a17ae | 618 | rn = route_node_lookup(table, (struct prefix *)p); |
718e3744 | 619 | |
d62a17ae | 620 | /* No route for this prefix. */ |
621 | if (!rn) | |
622 | return NULL; | |
718e3744 | 623 | |
d62a17ae | 624 | /* Unlock node. */ |
625 | route_unlock_node(rn); | |
5f7a4718 | 626 | dest = rib_dest_from_rnode(rn); |
718e3744 | 627 | |
996c9314 LB |
628 | if (dest && dest->selected_fib |
629 | && !CHECK_FLAG(dest->selected_fib->status, ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 630 | match = dest->selected_fib; |
718e3744 | 631 | |
d62a17ae | 632 | if (!match) |
633 | return NULL; | |
718e3744 | 634 | |
d62a17ae | 635 | if (match->type == ZEBRA_ROUTE_CONNECT) |
636 | return match; | |
f9e1b38e | 637 | |
677c1dd5 DS |
638 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_INSTALLED)) |
639 | return match; | |
718e3744 | 640 | |
d62a17ae | 641 | return NULL; |
718e3744 | 642 | } |
643 | ||
a64448ba DS |
644 | /* |
645 | * Is this RIB labeled-unicast? It must be of type BGP and all paths | |
646 | * (nexthops) must have a label. | |
647 | */ | |
d62a17ae | 648 | int zebra_rib_labeled_unicast(struct route_entry *re) |
a64448ba | 649 | { |
d62a17ae | 650 | struct nexthop *nexthop = NULL; |
a64448ba | 651 | |
d62a17ae | 652 | if (re->type != ZEBRA_ROUTE_BGP) |
653 | return 0; | |
a64448ba | 654 | |
c415d895 | 655 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 656 | if (!nexthop->nh_label || !nexthop->nh_label->num_labels) |
657 | return 0; | |
6b0655a2 | 658 | |
d62a17ae | 659 | return 1; |
a64448ba | 660 | } |
718e3744 | 661 | |
6ae24471 DS |
662 | /* Update flag indicates whether this is a "replace" or not. Currently, this |
663 | * is only used for IPv4. | |
664 | */ | |
0c555cc6 DS |
665 | void rib_install_kernel(struct route_node *rn, struct route_entry *re, |
666 | struct route_entry *old) | |
718e3744 | 667 | { |
d62a17ae | 668 | struct nexthop *nexthop; |
630d5962 | 669 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
d62a17ae | 670 | struct zebra_vrf *zvrf = vrf_info_lookup(re->vrf_id); |
97f5b441 MS |
671 | const struct prefix *p, *src_p; |
672 | enum zebra_dplane_result ret; | |
673 | ||
674 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
718e3744 | 675 | |
d62a17ae | 676 | srcdest_rnode_prefixes(rn, &p, &src_p); |
416ec78d | 677 | |
d62a17ae | 678 | if (info->safi != SAFI_UNICAST) { |
c415d895 | 679 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 680 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 681 | return; |
d62a17ae | 682 | } |
718e3744 | 683 | |
9ef49038 | 684 | |
8dfbc657 SW |
685 | /* |
686 | * Install the resolved nexthop object first. | |
687 | */ | |
c415d895 | 688 | zebra_nhg_install_kernel(re->nhe); |
8dfbc657 | 689 | |
2063a814 DS |
690 | /* |
691 | * If this is a replace to a new RE let the originator of the RE | |
692 | * know that they've lost | |
693 | */ | |
9a9f8926 | 694 | if (old && (old != re) && (old->type != re->type)) |
a7704e1b | 695 | zsend_route_notify_owner(rn, old, ZAPI_ROUTE_BETTER_ADMIN_WON, |
77b38a4a | 696 | info->afi, info->safi); |
25b9cb0c | 697 | |
97f5b441 MS |
698 | /* Update fib selection */ |
699 | dest->selected_fib = re; | |
700 | ||
d62a17ae | 701 | /* |
702 | * Make sure we update the FPM any time we send new information to | |
703 | * the kernel. | |
704 | */ | |
705 | hook_call(rib_update, rn, "installing in kernel"); | |
97f5b441 MS |
706 | |
707 | /* Send add or update */ | |
8263d1d0 | 708 | if (old) |
97f5b441 | 709 | ret = dplane_route_update(rn, re, old); |
5709131c | 710 | else |
97f5b441 | 711 | ret = dplane_route_add(rn, re); |
97f5b441 MS |
712 | |
713 | switch (ret) { | |
ea1c14f6 | 714 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
60f98b23 | 715 | SET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
efe6c026 MS |
716 | |
717 | if (old) { | |
60f98b23 | 718 | SET_FLAG(old->status, ROUTE_ENTRY_QUEUED); |
8d4665aa | 719 | SET_FLAG(re->status, ROUTE_ENTRY_ROUTE_REPLACING); |
efe6c026 MS |
720 | |
721 | /* Free old FIB nexthop group */ | |
7483dcbe | 722 | UNSET_FLAG(old->status, ROUTE_ENTRY_USE_FIB_NHG); |
efe6c026 MS |
723 | if (old->fib_ng.nexthop) { |
724 | nexthops_free(old->fib_ng.nexthop); | |
725 | old->fib_ng.nexthop = NULL; | |
726 | } | |
efe6c026 MS |
727 | } |
728 | ||
97f5b441 MS |
729 | if (zvrf) |
730 | zvrf->installs_queued++; | |
1e885672 | 731 | break; |
ea1c14f6 | 732 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 | 733 | { |
97f5b441 | 734 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, |
e658173a DS |
735 | "%u:%u:%pRN: Failed to enqueue dataplane install", |
736 | re->vrf_id, re->table, rn); | |
1e885672 | 737 | break; |
97f5b441 | 738 | } |
ea1c14f6 | 739 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
97f5b441 MS |
740 | if (zvrf) |
741 | zvrf->installs++; | |
1e885672 DS |
742 | break; |
743 | } | |
d62a17ae | 744 | |
0c555cc6 | 745 | return; |
718e3744 | 746 | } |
747 | ||
748 | /* Uninstall the route from kernel. */ | |
0c555cc6 | 749 | void rib_uninstall_kernel(struct route_node *rn, struct route_entry *re) |
718e3744 | 750 | { |
d62a17ae | 751 | struct nexthop *nexthop; |
630d5962 | 752 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
d62a17ae | 753 | struct zebra_vrf *zvrf = vrf_info_lookup(re->vrf_id); |
05737783 | 754 | |
d62a17ae | 755 | if (info->safi != SAFI_UNICAST) { |
677c1dd5 | 756 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 757 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d6792f9d | 758 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 759 | return; |
d62a17ae | 760 | } |
416ec78d | 761 | |
d62a17ae | 762 | /* |
763 | * Make sure we update the FPM any time we send new information to | |
97f5b441 | 764 | * the dataplane. |
d62a17ae | 765 | */ |
766 | hook_call(rib_update, rn, "uninstalling from kernel"); | |
97f5b441 MS |
767 | |
768 | switch (dplane_route_delete(rn, re)) { | |
ea1c14f6 | 769 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
97f5b441 MS |
770 | if (zvrf) |
771 | zvrf->removals_queued++; | |
1e885672 | 772 | break; |
ea1c14f6 | 773 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 | 774 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, |
e658173a DS |
775 | "%u:%pRN: Failed to enqueue dataplane uninstall", |
776 | re->vrf_id, rn); | |
1e885672 | 777 | break; |
ea1c14f6 | 778 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
1e885672 DS |
779 | if (zvrf) |
780 | zvrf->removals++; | |
781 | break; | |
782 | } | |
718e3744 | 783 | |
0c555cc6 | 784 | return; |
718e3744 | 785 | } |
786 | ||
9fd92e3c AS |
787 | /* |
788 | * rib_can_delete_dest | |
789 | * | |
2951a7a4 | 790 | * Returns true if the given dest can be deleted from the table. |
9fd92e3c | 791 | */ |
d62a17ae | 792 | static int rib_can_delete_dest(rib_dest_t *dest) |
9fd92e3c | 793 | { |
045207e2 | 794 | if (re_list_first(&dest->routes)) { |
d62a17ae | 795 | return 0; |
796 | } | |
9fd92e3c | 797 | |
c86ba6c2 DS |
798 | /* |
799 | * Unresolved rnh's are stored on the default route's list | |
800 | * | |
801 | * dest->rnode can also be the source prefix node in an | |
802 | * ipv6 sourcedest table. Fortunately the prefix of a | |
803 | * source prefix node can never be the default prefix. | |
804 | */ | |
805 | if (is_default_prefix(&dest->rnode->p)) | |
806 | return 0; | |
807 | ||
d62a17ae | 808 | /* |
809 | * Don't delete the dest if we have to update the FPM about this | |
810 | * prefix. | |
811 | */ | |
812 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM) | |
813 | || CHECK_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM)) | |
814 | return 0; | |
5adc2528 | 815 | |
d62a17ae | 816 | return 1; |
9fd92e3c AS |
817 | } |
818 | ||
f99f1ff5 SP |
819 | void zebra_rib_evaluate_rn_nexthops(struct route_node *rn, uint32_t seq, |
820 | bool rt_delete) | |
699dae23 DS |
821 | { |
822 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
699dae23 DS |
823 | struct rnh *rnh; |
824 | ||
825 | /* | |
50872b08 | 826 | * We are storing the rnh's associated withb |
699dae23 DS |
827 | * the tracked nexthop as a list of the rn's. |
828 | * Unresolved rnh's are placed at the top | |
829 | * of the tree list.( 0.0.0.0/0 for v4 and 0::0/0 for v6 ) | |
830 | * As such for each rn we need to walk up the tree | |
831 | * and see if any rnh's need to see if they | |
832 | * would match a more specific route | |
833 | */ | |
834 | while (rn) { | |
e658173a | 835 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) |
15569c58 | 836 | zlog_debug( |
e658173a DS |
837 | "%s: %pRN Being examined for Nexthop Tracking Count: %zd", |
838 | __func__, rn, | |
15569c58 | 839 | dest ? rnh_list_count(&dest->nht) : 0); |
e658173a | 840 | |
f99f1ff5 SP |
841 | if (rt_delete && (!dest || !rnh_list_count(&dest->nht))) { |
842 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) | |
843 | zlog_debug("%pRN has no tracking NHTs. Bailing", | |
844 | rn); | |
845 | break; | |
846 | } | |
699dae23 DS |
847 | if (!dest) { |
848 | rn = rn->parent; | |
849 | if (rn) | |
850 | dest = rib_dest_from_rnode(rn); | |
851 | continue; | |
852 | } | |
853 | /* | |
854 | * If we have any rnh's stored in the nht list | |
855 | * then we know that this route node was used for | |
856 | * nht resolution and as such we need to call the | |
857 | * nexthop tracking evaluation code | |
858 | */ | |
739c9c90 | 859 | frr_each_safe(rnh_list, &dest->nht, rnh) { |
699dae23 DS |
860 | struct zebra_vrf *zvrf = |
861 | zebra_vrf_lookup_by_id(rnh->vrf_id); | |
862 | struct prefix *p = &rnh->node->p; | |
863 | ||
e658173a | 864 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) |
bd47f3a3 | 865 | zlog_debug( |
5ef3568f DS |
866 | "%s(%u):%pRN has Nexthop(%pRN) depending on it, evaluating %u:%u", |
867 | zvrf_name(zvrf), zvrf_id(zvrf), rn, | |
868 | rnh->node, seq, rnh->seqno); | |
699dae23 DS |
869 | |
870 | /* | |
871 | * If we have evaluated this node on this pass | |
872 | * already, due to following the tree up | |
873 | * then we know that we can move onto the next | |
874 | * rnh to process. | |
875 | * | |
876 | * Additionally we call zebra_evaluate_rnh | |
877 | * when we gc the dest. In this case we know | |
878 | * that there must be no other re's where | |
879 | * we were originally as such we know that | |
880 | * that sequence number is ok to respect. | |
881 | */ | |
50872b08 DS |
882 | if (rnh->seqno == seq) { |
883 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) | |
884 | zlog_debug( | |
1d5453d6 | 885 | " Node processed and moved already"); |
699dae23 | 886 | continue; |
50872b08 | 887 | } |
699dae23 DS |
888 | |
889 | rnh->seqno = seq; | |
d597533a DS |
890 | zebra_evaluate_rnh(zvrf, family2afi(p->family), 0, p, |
891 | rnh->safi); | |
699dae23 DS |
892 | } |
893 | ||
894 | rn = rn->parent; | |
895 | if (rn) | |
896 | dest = rib_dest_from_rnode(rn); | |
897 | } | |
898 | } | |
899 | ||
9fd92e3c AS |
900 | /* |
901 | * rib_gc_dest | |
902 | * | |
903 | * Garbage collect the rib dest corresponding to the given route node | |
904 | * if appropriate. | |
905 | * | |
2951a7a4 | 906 | * Returns true if the dest was deleted, false otherwise. |
9fd92e3c | 907 | */ |
d62a17ae | 908 | int rib_gc_dest(struct route_node *rn) |
9fd92e3c | 909 | { |
d62a17ae | 910 | rib_dest_t *dest; |
9fd92e3c | 911 | |
d62a17ae | 912 | dest = rib_dest_from_rnode(rn); |
913 | if (!dest) | |
914 | return 0; | |
9fd92e3c | 915 | |
d62a17ae | 916 | if (!rib_can_delete_dest(dest)) |
917 | return 0; | |
9fd92e3c | 918 | |
c9abf558 DS |
919 | if (IS_ZEBRA_DEBUG_RIB) { |
920 | struct zebra_vrf *zvrf; | |
921 | ||
922 | zvrf = rib_dest_vrf(dest); | |
d62a17ae | 923 | rnode_debug(rn, zvrf_id(zvrf), "removing dest from table"); |
c9abf558 | 924 | } |
9fd92e3c | 925 | |
f99f1ff5 SP |
926 | zebra_rib_evaluate_rn_nexthops(rn, zebra_router_get_next_sequence(), |
927 | true); | |
699dae23 | 928 | |
d62a17ae | 929 | dest->rnode = NULL; |
aa57abfb | 930 | rnh_list_fini(&dest->nht); |
d62a17ae | 931 | XFREE(MTYPE_RIB_DEST, dest); |
932 | rn->info = NULL; | |
9fd92e3c | 933 | |
d62a17ae | 934 | /* |
935 | * Release the one reference that we keep on the route node. | |
936 | */ | |
937 | route_unlock_node(rn); | |
938 | return 1; | |
9fd92e3c AS |
939 | } |
940 | ||
224ccf29 DL |
941 | void zebra_rtable_node_cleanup(struct route_table *table, |
942 | struct route_node *node) | |
943 | { | |
944 | struct route_entry *re, *next; | |
945 | ||
946 | RNODE_FOREACH_RE_SAFE (node, re, next) { | |
947 | rib_unlink(node, re); | |
948 | } | |
949 | ||
950 | if (node->info) { | |
951 | rib_dest_t *dest = node->info; | |
952 | ||
0d0f516c | 953 | /* Remove from update queue of FPM module */ |
954 | hook_call(rib_shutdown, node); | |
955 | ||
224ccf29 DL |
956 | rnh_list_fini(&dest->nht); |
957 | XFREE(MTYPE_RIB_DEST, node->info); | |
958 | } | |
959 | } | |
960 | ||
d62a17ae | 961 | static void rib_process_add_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
962 | struct route_entry *new) | |
3e5c6e00 | 963 | { |
d62a17ae | 964 | hook_call(rib_update, rn, "new route selected"); |
3e5c6e00 | 965 | |
d62a17ae | 966 | /* Update real nexthop. This may actually determine if nexthop is active |
967 | * or not. */ | |
c415d895 | 968 | if (!nexthop_group_active_nexthop_num(&(new->nhe->nhg))) { |
d62a17ae | 969 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
970 | return; | |
971 | } | |
3e5c6e00 | 972 | |
e658173a DS |
973 | if (IS_ZEBRA_DEBUG_RIB) |
974 | zlog_debug("%s(%u:%u):%pRN: Adding route rn %p, re %p (%s)", | |
975 | zvrf_name(zvrf), zvrf_id(zvrf), new->table, rn, rn, | |
c2c02b76 | 976 | new, zebra_route_string(new->type)); |
3e5c6e00 | 977 | |
d62a17ae | 978 | /* If labeled-unicast route, install transit LSP. */ |
979 | if (zebra_rib_labeled_unicast(new)) | |
980 | zebra_mpls_lsp_install(zvrf, rn, new); | |
a64448ba | 981 | |
3cdba47a | 982 | rib_install_kernel(rn, new, NULL); |
3e5c6e00 | 983 | |
d62a17ae | 984 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 985 | } |
986 | ||
d62a17ae | 987 | static void rib_process_del_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
988 | struct route_entry *old) | |
3e5c6e00 | 989 | { |
d62a17ae | 990 | hook_call(rib_update, rn, "removing existing route"); |
3e5c6e00 | 991 | |
d62a17ae | 992 | /* Uninstall from kernel. */ |
e658173a DS |
993 | if (IS_ZEBRA_DEBUG_RIB) |
994 | zlog_debug("%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s)", | |
995 | zvrf_name(zvrf), zvrf_id(zvrf), old->table, rn, rn, | |
c2c02b76 | 996 | old, zebra_route_string(old->type)); |
3e5c6e00 | 997 | |
d62a17ae | 998 | /* If labeled-unicast route, uninstall transit LSP. */ |
999 | if (zebra_rib_labeled_unicast(old)) | |
1000 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
1001 | ||
3cdba47a | 1002 | rib_uninstall_kernel(rn, old); |
d62a17ae | 1003 | |
1004 | /* Update nexthop for route, reset changed flag. */ | |
ef57f35f DL |
1005 | /* Note: this code also handles the Linux case when an interface goes |
1006 | * down, causing the kernel to delete routes without sending DELROUTE | |
1007 | * notifications | |
1008 | */ | |
6883bf8d | 1009 | if (RIB_KERNEL_ROUTE(old)) |
212df1de PG |
1010 | SET_FLAG(old->status, ROUTE_ENTRY_REMOVED); |
1011 | else | |
1012 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); | |
d62a17ae | 1013 | } |
1014 | ||
1015 | static void rib_process_update_fib(struct zebra_vrf *zvrf, | |
1016 | struct route_node *rn, | |
1017 | struct route_entry *old, | |
1018 | struct route_entry *new) | |
1019 | { | |
d62a17ae | 1020 | int nh_active = 0; |
d62a17ae | 1021 | |
1022 | /* | |
1023 | * We have to install or update if a new route has been selected or | |
1024 | * something has changed. | |
1025 | */ | |
1026 | if (new != old || CHECK_FLAG(new->status, ROUTE_ENTRY_CHANGED)) { | |
1027 | hook_call(rib_update, rn, "updating existing route"); | |
1028 | ||
1029 | /* Update the nexthop; we could determine here that nexthop is | |
1030 | * inactive. */ | |
c415d895 | 1031 | if (nexthop_group_active_nexthop_num(&(new->nhe->nhg))) |
d62a17ae | 1032 | nh_active = 1; |
1033 | ||
1034 | /* If nexthop is active, install the selected route, if | |
1035 | * appropriate. If | |
1036 | * the install succeeds, cleanup flags for prior route, if | |
1037 | * different from | |
1038 | * newly selected. | |
1039 | */ | |
1040 | if (nh_active) { | |
1041 | if (IS_ZEBRA_DEBUG_RIB) { | |
d62a17ae | 1042 | if (new != old) |
1043 | zlog_debug( | |
e658173a | 1044 | "%s(%u:%u):%pRN: Updating route rn %p, re %p (%s) old %p (%s)", |
bd47f3a3 | 1045 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 1046 | new->table, rn, rn, new, |
2da33d6b DS |
1047 | zebra_route_string(new->type), |
1048 | old, | |
1049 | zebra_route_string(old->type)); | |
d62a17ae | 1050 | else |
1051 | zlog_debug( | |
e658173a | 1052 | "%s(%u:%u):%pRN: Updating route rn %p, re %p (%s)", |
bd47f3a3 | 1053 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 1054 | new->table, rn, rn, new, |
2da33d6b | 1055 | zebra_route_string(new->type)); |
d62a17ae | 1056 | } |
1057 | ||
1058 | /* If labeled-unicast route, uninstall transit LSP. */ | |
1059 | if (zebra_rib_labeled_unicast(old)) | |
1060 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
1061 | ||
3cdba47a DS |
1062 | /* |
1063 | * Non-system route should be installed. | |
1064 | * If labeled-unicast route, install transit | |
1065 | * LSP. | |
1066 | */ | |
1067 | if (zebra_rib_labeled_unicast(new)) | |
1068 | zebra_mpls_lsp_install(zvrf, rn, new); | |
d62a17ae | 1069 | |
3cdba47a | 1070 | rib_install_kernel(rn, new, old); |
d62a17ae | 1071 | } |
a64448ba | 1072 | |
d62a17ae | 1073 | /* |
1074 | * If nexthop for selected route is not active or install | |
1075 | * failed, we | |
1076 | * may need to uninstall and delete for redistribution. | |
1077 | */ | |
ed216282 | 1078 | if (!nh_active) { |
d62a17ae | 1079 | if (IS_ZEBRA_DEBUG_RIB) { |
d62a17ae | 1080 | if (new != old) |
1081 | zlog_debug( | |
e658173a | 1082 | "%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s) old %p (%s) - nexthop inactive", |
bd47f3a3 | 1083 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 1084 | new->table, rn, rn, new, |
2da33d6b DS |
1085 | zebra_route_string(new->type), |
1086 | old, | |
1087 | zebra_route_string(old->type)); | |
d62a17ae | 1088 | else |
1089 | zlog_debug( | |
e658173a | 1090 | "%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s) - nexthop inactive", |
bd47f3a3 | 1091 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 1092 | new->table, rn, rn, new, |
2da33d6b | 1093 | zebra_route_string(new->type)); |
d62a17ae | 1094 | } |
1095 | ||
5c18e662 DS |
1096 | /* |
1097 | * When we have gotten to this point | |
1098 | * the new route entry has no nexthops | |
1099 | * that are usable and as such we need | |
1100 | * to remove the old route, but only | |
1101 | * if we were the one who installed | |
1102 | * the old route | |
1103 | */ | |
1104 | if (!RIB_SYSTEM_ROUTE(old)) { | |
1105 | /* If labeled-unicast route, uninstall transit | |
1106 | * LSP. */ | |
1107 | if (zebra_rib_labeled_unicast(old)) | |
1108 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
d62a17ae | 1109 | |
5c18e662 DS |
1110 | rib_uninstall_kernel(rn, old); |
1111 | } | |
d62a17ae | 1112 | } |
1113 | } else { | |
1114 | /* | |
1115 | * Same route selected; check if in the FIB and if not, | |
3cdba47a DS |
1116 | * re-install. This is housekeeping code to deal with |
1117 | * race conditions in kernel with linux netlink reporting | |
1118 | * interface up before IPv4 or IPv6 protocol is ready | |
d62a17ae | 1119 | * to add routes. |
1120 | */ | |
3cdba47a DS |
1121 | if (!CHECK_FLAG(new->status, ROUTE_ENTRY_INSTALLED) || |
1122 | RIB_SYSTEM_ROUTE(new)) | |
677c1dd5 | 1123 | rib_install_kernel(rn, new, NULL); |
d62a17ae | 1124 | } |
1125 | ||
1126 | /* Update prior route. */ | |
6883bf8d | 1127 | if (new != old) |
d62a17ae | 1128 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 1129 | |
d62a17ae | 1130 | /* Clear changed flag. */ |
1131 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); | |
3e5c6e00 | 1132 | } |
1133 | ||
d62a17ae | 1134 | /* Check if 'alternate' RIB entry is better than 'current'. */ |
1135 | static struct route_entry *rib_choose_best(struct route_entry *current, | |
1136 | struct route_entry *alternate) | |
1137 | { | |
1138 | if (current == NULL) | |
1139 | return alternate; | |
1140 | ||
1141 | /* filter route selection in following order: | |
1142 | * - connected beats other types | |
fec4ca19 | 1143 | * - if both connected, loopback or vrf wins |
d62a17ae | 1144 | * - lower distance beats higher |
1145 | * - lower metric beats higher for equal distance | |
1146 | * - last, hence oldest, route wins tie break. | |
1147 | */ | |
1148 | ||
fec4ca19 DS |
1149 | /* Connected routes. Check to see if either are a vrf |
1150 | * or loopback interface. If not, pick the last connected | |
d62a17ae | 1151 | * route of the set of lowest metric connected routes. |
1152 | */ | |
1153 | if (alternate->type == ZEBRA_ROUTE_CONNECT) { | |
fec4ca19 DS |
1154 | if (current->type != ZEBRA_ROUTE_CONNECT) |
1155 | return alternate; | |
1156 | ||
1157 | /* both are connected. are either loop or vrf? */ | |
1158 | struct nexthop *nexthop = NULL; | |
1159 | ||
c415d895 | 1160 | for (ALL_NEXTHOPS(alternate->nhe->nhg, nexthop)) { |
873fde8c | 1161 | struct interface *ifp = if_lookup_by_index( |
1162 | nexthop->ifindex, alternate->vrf_id); | |
1163 | ||
608c8870 | 1164 | if (ifp && if_is_loopback(ifp)) |
fec4ca19 DS |
1165 | return alternate; |
1166 | } | |
1167 | ||
c415d895 | 1168 | for (ALL_NEXTHOPS(current->nhe->nhg, nexthop)) { |
873fde8c | 1169 | struct interface *ifp = if_lookup_by_index( |
1170 | nexthop->ifindex, current->vrf_id); | |
1171 | ||
608c8870 | 1172 | if (ifp && if_is_loopback(ifp)) |
fec4ca19 DS |
1173 | return current; |
1174 | } | |
1175 | ||
1176 | /* Neither are loop or vrf so pick best metric */ | |
1177 | if (alternate->metric <= current->metric) | |
d62a17ae | 1178 | return alternate; |
1179 | ||
1180 | return current; | |
1181 | } | |
3e5c6e00 | 1182 | |
d62a17ae | 1183 | if (current->type == ZEBRA_ROUTE_CONNECT) |
1184 | return current; | |
3e5c6e00 | 1185 | |
d62a17ae | 1186 | /* higher distance loses */ |
1187 | if (alternate->distance < current->distance) | |
1188 | return alternate; | |
1189 | if (current->distance < alternate->distance) | |
1190 | return current; | |
3e5c6e00 | 1191 | |
d62a17ae | 1192 | /* metric tie-breaks equal distance */ |
1193 | if (alternate->metric <= current->metric) | |
1194 | return alternate; | |
3e5c6e00 | 1195 | |
d62a17ae | 1196 | return current; |
3e5c6e00 | 1197 | } |
1198 | ||
d62a17ae | 1199 | /* Core function for processing routing information base. */ |
1200 | static void rib_process(struct route_node *rn) | |
1201 | { | |
1202 | struct route_entry *re; | |
1203 | struct route_entry *next; | |
1204 | struct route_entry *old_selected = NULL; | |
1205 | struct route_entry *new_selected = NULL; | |
1206 | struct route_entry *old_fib = NULL; | |
1207 | struct route_entry *new_fib = NULL; | |
1208 | struct route_entry *best = NULL; | |
d62a17ae | 1209 | rib_dest_t *dest; |
1210 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1211 | struct vrf *vrf; |
86391e56 | 1212 | |
d62a17ae | 1213 | vrf_id_t vrf_id = VRF_UNKNOWN; |
1214 | ||
1215 | assert(rn); | |
1216 | ||
1217 | dest = rib_dest_from_rnode(rn); | |
f0afc61d DS |
1218 | /* |
1219 | * We have an enqueued node with nothing to process here | |
1220 | * let's just finish up and return; | |
1221 | */ | |
1222 | if (!dest) | |
1223 | return; | |
bab85d4f | 1224 | |
f0afc61d DS |
1225 | zvrf = rib_dest_vrf(dest); |
1226 | vrf_id = zvrf_id(zvrf); | |
bd47f3a3 | 1227 | |
bd47f3a3 | 1228 | vrf = vrf_lookup_by_id(vrf_id); |
bab85d4f | 1229 | |
607425e5 DS |
1230 | /* |
1231 | * we can have rn's that have a NULL info pointer | |
1232 | * (dest). As such let's not let the deref happen | |
1233 | * additionally we know RNODE_FOREACH_RE_SAFE | |
1234 | * will not iterate so we are ok. | |
1235 | */ | |
f0afc61d DS |
1236 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1237 | struct route_entry *re = re_list_first(&dest->routes); | |
f5158712 | 1238 | |
e658173a DS |
1239 | zlog_debug("%s(%u:%u):%pRN: Processing rn %p", |
1240 | VRF_LOGNAME(vrf), vrf_id, re->table, rn, | |
f0afc61d | 1241 | rn); |
f5158712 | 1242 | } |
5f7a4718 | 1243 | |
f0afc61d DS |
1244 | old_fib = dest->selected_fib; |
1245 | ||
a2addae8 | 1246 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
61e6de9d DS |
1247 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1248 | char flags_buf[128]; | |
1249 | char status_buf[128]; | |
1250 | ||
d62a17ae | 1251 | zlog_debug( |
e658173a DS |
1252 | "%s(%u:%u):%pRN: Examine re %p (%s) status: %sflags: %sdist %d metric %d", |
1253 | VRF_LOGNAME(vrf), vrf_id, re->table, rn, re, | |
61e6de9d DS |
1254 | zebra_route_string(re->type), |
1255 | _dump_re_status(re, status_buf, | |
1256 | sizeof(status_buf)), | |
1257 | zclient_dump_route_flags(re->flags, flags_buf, | |
1258 | sizeof(flags_buf)), | |
1259 | re->distance, re->metric); | |
1260 | } | |
d62a17ae | 1261 | |
d62a17ae | 1262 | /* Currently selected re. */ |
1263 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) { | |
1264 | assert(old_selected == NULL); | |
1265 | old_selected = re; | |
1266 | } | |
bab85d4f | 1267 | |
d62a17ae | 1268 | /* Skip deleted entries from selection */ |
1269 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1270 | continue; | |
1271 | ||
9d221fac DS |
1272 | /* |
1273 | * If the route entry has changed, verify/resolve | |
1274 | * the nexthops associated with the entry. | |
1275 | * | |
1276 | * In any event if we have nexthops that are not active | |
1277 | * then we cannot use this particular route entry so | |
1278 | * skip it. | |
d62a17ae | 1279 | */ |
9d221fac DS |
1280 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED)) { |
1281 | if (!nexthop_active_update(rn, re)) { | |
7e010c4b DS |
1282 | const struct prefix *p; |
1283 | struct rib_table_info *info; | |
1284 | ||
9d221fac DS |
1285 | if (re->type == ZEBRA_ROUTE_TABLE) { |
1286 | /* XXX: HERE BE DRAGONS!!!!! | |
1287 | * In all honesty, I have not yet | |
1288 | * figured out what this part does or | |
1289 | * why the ROUTE_ENTRY_CHANGED test | |
1290 | * above is correct or why we need to | |
1291 | * delete a route here, and also not | |
1292 | * whether this concerns both selected | |
1293 | * and fib route, or only selected | |
1294 | * or only fib | |
1295 | * | |
1296 | * This entry was denied by the 'ip | |
1297 | * protocol | |
1298 | * table' route-map, we need to delete | |
1299 | * it */ | |
1300 | if (re != old_selected) { | |
1301 | if (IS_ZEBRA_DEBUG_RIB) | |
1302 | zlog_debug( | |
e658173a | 1303 | "%s: %s(%u):%pRN: imported via import-table but denied by the ip protocol table route-map", |
9d221fac DS |
1304 | __func__, |
1305 | VRF_LOGNAME( | |
1306 | vrf), | |
e658173a | 1307 | vrf_id, rn); |
9d221fac DS |
1308 | rib_unlink(rn, re); |
1309 | } else | |
1310 | SET_FLAG(re->status, | |
1311 | ROUTE_ENTRY_REMOVED); | |
1312 | } | |
d62a17ae | 1313 | |
7e010c4b DS |
1314 | info = srcdest_rnode_table_info(rn); |
1315 | srcdest_rnode_prefixes(rn, &p, NULL); | |
a7704e1b DS |
1316 | zsend_route_notify_owner( |
1317 | rn, re, ZAPI_ROUTE_FAIL_INSTALL, | |
1318 | info->afi, info->safi); | |
9d221fac DS |
1319 | continue; |
1320 | } | |
1321 | } else { | |
1322 | /* | |
1323 | * If the re has not changed and the nhg we have is | |
1324 | * not usable, then we cannot use this route entry | |
1325 | * for consideration, as that the route will just | |
1326 | * not install if it is selected. | |
1327 | */ | |
1328 | if (!nexthop_group_active_nexthop_num(&re->nhe->nhg)) | |
1329 | continue; | |
d62a17ae | 1330 | } |
bab85d4f | 1331 | |
d62a17ae | 1332 | /* Infinite distance. */ |
3332f4f0 DS |
1333 | if (re->distance == DISTANCE_INFINITY && |
1334 | re->type != ZEBRA_ROUTE_KERNEL) { | |
d62a17ae | 1335 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
1336 | continue; | |
1337 | } | |
bab85d4f | 1338 | |
d62a17ae | 1339 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_FIB_OVERRIDE)) { |
1340 | best = rib_choose_best(new_fib, re); | |
1341 | if (new_fib && best != new_fib) | |
1342 | UNSET_FLAG(new_fib->status, | |
1343 | ROUTE_ENTRY_CHANGED); | |
1344 | new_fib = best; | |
1345 | } else { | |
1346 | best = rib_choose_best(new_selected, re); | |
1347 | if (new_selected && best != new_selected) | |
1348 | UNSET_FLAG(new_selected->status, | |
1349 | ROUTE_ENTRY_CHANGED); | |
1350 | new_selected = best; | |
1351 | } | |
1352 | if (best != re) | |
1353 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
1354 | } /* RNODE_FOREACH_RE */ | |
1355 | ||
1356 | /* If no FIB override route, use the selected route also for FIB */ | |
1357 | if (new_fib == NULL) | |
1358 | new_fib = new_selected; | |
1359 | ||
1360 | /* After the cycle is finished, the following pointers will be set: | |
1361 | * old_selected --- RE entry currently having SELECTED | |
1362 | * new_selected --- RE entry that is newly SELECTED | |
1363 | * old_fib --- RE entry currently in kernel FIB | |
1364 | * new_fib --- RE entry that is newly to be in kernel FIB | |
1365 | * | |
1366 | * new_selected will get SELECTED flag, and is going to be redistributed | |
1367 | * the zclients. new_fib (which can be new_selected) will be installed | |
1368 | * in kernel. | |
1369 | */ | |
1370 | ||
1371 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
c2c02b76 DS |
1372 | struct route_entry *entry; |
1373 | ||
1374 | entry = old_selected | |
1375 | ? old_selected | |
1376 | : new_selected | |
1377 | ? new_selected | |
1378 | : old_fib ? old_fib | |
1379 | : new_fib ? new_fib : NULL; | |
1380 | ||
d62a17ae | 1381 | zlog_debug( |
e658173a DS |
1382 | "%s(%u:%u):%pRN: After processing: old_selected %p new_selected %p old_fib %p new_fib %p", |
1383 | VRF_LOGNAME(vrf), vrf_id, entry ? entry->table : 0, rn, | |
c2c02b76 DS |
1384 | (void *)old_selected, (void *)new_selected, |
1385 | (void *)old_fib, (void *)new_fib); | |
d62a17ae | 1386 | } |
446bb95e | 1387 | |
d62a17ae | 1388 | /* Buffer ROUTE_ENTRY_CHANGED here, because it will get cleared if |
1389 | * fib == selected */ | |
9d303b37 DL |
1390 | bool selected_changed = new_selected && CHECK_FLAG(new_selected->status, |
1391 | ROUTE_ENTRY_CHANGED); | |
d62a17ae | 1392 | |
8cb41cd6 | 1393 | /* Update SELECTED entry */ |
d62a17ae | 1394 | if (old_selected != new_selected || selected_changed) { |
93bdadae | 1395 | |
6883bf8d | 1396 | if (new_selected && new_selected != new_fib) |
d62a17ae | 1397 | UNSET_FLAG(new_selected->status, ROUTE_ENTRY_CHANGED); |
41ec9222 | 1398 | |
3cdba47a | 1399 | if (new_selected) |
5af4b346 MS |
1400 | SET_FLAG(new_selected->flags, ZEBRA_FLAG_SELECTED); |
1401 | ||
d62a17ae | 1402 | if (old_selected) { |
40f321c0 MS |
1403 | /* |
1404 | * If we're removing the old entry, we should tell | |
1405 | * redist subscribers about that *if* they aren't | |
1406 | * going to see a redist for the new entry. | |
1407 | */ | |
1408 | if (!new_selected || CHECK_FLAG(old_selected->status, | |
1409 | ROUTE_ENTRY_REMOVED)) | |
b3a9fca1 | 1410 | redistribute_delete(rn, old_selected, |
40f321c0 MS |
1411 | new_selected); |
1412 | ||
d62a17ae | 1413 | if (old_selected != new_selected) |
1414 | UNSET_FLAG(old_selected->flags, | |
1415 | ZEBRA_FLAG_SELECTED); | |
f857321e | 1416 | } |
d62a17ae | 1417 | } |
3e5c6e00 | 1418 | |
f68ce976 DL |
1419 | /* Update fib according to selection results */ |
1420 | if (new_fib && old_fib) | |
1421 | rib_process_update_fib(zvrf, rn, old_fib, new_fib); | |
1422 | else if (new_fib) | |
1423 | rib_process_add_fib(zvrf, rn, new_fib); | |
1424 | else if (old_fib) | |
1425 | rib_process_del_fib(zvrf, rn, old_fib); | |
1426 | ||
d62a17ae | 1427 | /* Remove all RE entries queued for removal */ |
a2addae8 | 1428 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 1429 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { |
1430 | if (IS_ZEBRA_DEBUG_RIB) { | |
1431 | rnode_debug(rn, vrf_id, "rn %p, removing re %p", | |
1432 | (void *)rn, (void *)re); | |
1433 | } | |
1434 | rib_unlink(rn, re); | |
1435 | } | |
1436 | } | |
4d38fdb4 | 1437 | |
d62a17ae | 1438 | /* |
1439 | * Check if the dest can be deleted now. | |
1440 | */ | |
1441 | rib_gc_dest(rn); | |
e96f9203 DO |
1442 | } |
1443 | ||
a1494c25 DS |
1444 | static void zebra_rib_evaluate_mpls(struct route_node *rn) |
1445 | { | |
1446 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
1447 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1448 | ||
1449 | if (!dest) | |
1450 | return; | |
1451 | ||
1452 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_LSPS)) { | |
1453 | if (IS_ZEBRA_DEBUG_MPLS) | |
1454 | zlog_debug( | |
bd47f3a3 JU |
1455 | "%s(%u): Scheduling all LSPs upon RIB completion", |
1456 | zvrf_name(zvrf), zvrf_id(zvrf)); | |
a1494c25 DS |
1457 | zebra_mpls_lsp_schedule(zvrf); |
1458 | mpls_unmark_lsps_for_processing(rn); | |
1459 | } | |
1460 | } | |
1461 | ||
e5ac2adf MS |
1462 | /* |
1463 | * Utility to match route with dplane context data | |
1464 | */ | |
1465 | static bool rib_route_match_ctx(const struct route_entry *re, | |
25779064 MS |
1466 | const struct zebra_dplane_ctx *ctx, |
1467 | bool is_update) | |
e5ac2adf MS |
1468 | { |
1469 | bool result = false; | |
1470 | ||
1471 | if (is_update) { | |
1472 | /* | |
1473 | * In 'update' case, we test info about the 'previous' or | |
1474 | * 'old' route | |
1475 | */ | |
1476 | if ((re->type == dplane_ctx_get_old_type(ctx)) && | |
1477 | (re->instance == dplane_ctx_get_old_instance(ctx))) { | |
1478 | result = true; | |
1479 | ||
9db35a5e MS |
1480 | /* We use an extra test for statics, and another for |
1481 | * kernel routes. | |
e5ac2adf MS |
1482 | */ |
1483 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1484 | (re->distance != dplane_ctx_get_old_distance(ctx) || | |
1485 | re->tag != dplane_ctx_get_old_tag(ctx))) { | |
1486 | result = false; | |
9db35a5e MS |
1487 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1488 | re->metric != | |
1489 | dplane_ctx_get_old_metric(ctx)) { | |
1490 | result = false; | |
e5ac2adf MS |
1491 | } |
1492 | } | |
1493 | ||
1494 | } else { | |
1495 | /* | |
1496 | * Ordinary, single-route case using primary context info | |
1497 | */ | |
1498 | if ((dplane_ctx_get_op(ctx) != DPLANE_OP_ROUTE_DELETE) && | |
1499 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
1500 | /* Skip route that's been deleted */ | |
1501 | goto done; | |
1502 | } | |
1503 | ||
1504 | if ((re->type == dplane_ctx_get_type(ctx)) && | |
1505 | (re->instance == dplane_ctx_get_instance(ctx))) { | |
1506 | result = true; | |
1507 | ||
9db35a5e MS |
1508 | /* We use an extra test for statics, and another for |
1509 | * kernel routes. | |
e5ac2adf MS |
1510 | */ |
1511 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1512 | (re->distance != dplane_ctx_get_distance(ctx) || | |
1513 | re->tag != dplane_ctx_get_tag(ctx))) { | |
1514 | result = false; | |
9db35a5e MS |
1515 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1516 | re->metric != dplane_ctx_get_metric(ctx)) { | |
1517 | result = false; | |
1518 | } else if (re->type == ZEBRA_ROUTE_CONNECT) { | |
1519 | result = nexthop_group_equal_no_recurse( | |
1520 | &re->nhe->nhg, dplane_ctx_get_ng(ctx)); | |
e5ac2adf MS |
1521 | } |
1522 | } | |
1523 | } | |
1524 | ||
1525 | done: | |
871a16cd | 1526 | return result; |
e5ac2adf MS |
1527 | } |
1528 | ||
3cdba47a DS |
1529 | static void zebra_rib_fixup_system(struct route_node *rn) |
1530 | { | |
1531 | struct route_entry *re; | |
1532 | ||
1533 | RNODE_FOREACH_RE(rn, re) { | |
1534 | struct nexthop *nhop; | |
1535 | ||
1536 | if (!RIB_SYSTEM_ROUTE(re)) | |
1537 | continue; | |
1538 | ||
1539 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1540 | continue; | |
1541 | ||
1542 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
6d0ee6a0 | 1543 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
8d4665aa | 1544 | UNSET_FLAG(re->status, ROUTE_ENTRY_ROUTE_REPLACING); |
3cdba47a | 1545 | |
c415d895 | 1546 | for (ALL_NEXTHOPS(re->nhe->nhg, nhop)) { |
3cdba47a DS |
1547 | if (CHECK_FLAG(nhop->flags, NEXTHOP_FLAG_RECURSIVE)) |
1548 | continue; | |
1549 | ||
1550 | SET_FLAG(nhop->flags, NEXTHOP_FLAG_FIB); | |
1551 | } | |
1552 | } | |
1553 | } | |
1554 | ||
9db35a5e MS |
1555 | /* Route comparison logic, with various special cases. */ |
1556 | static bool rib_compare_routes(const struct route_entry *re1, | |
1557 | const struct route_entry *re2) | |
1558 | { | |
9db35a5e MS |
1559 | if (re1->type != re2->type) |
1560 | return false; | |
1561 | ||
1562 | if (re1->instance != re2->instance) | |
1563 | return false; | |
1564 | ||
1565 | if (re1->type == ZEBRA_ROUTE_KERNEL && re1->metric != re2->metric) | |
1566 | return false; | |
1567 | ||
1568 | if (CHECK_FLAG(re1->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && | |
1569 | re1->distance != re2->distance) | |
1570 | return false; | |
1571 | ||
87009d7d MS |
1572 | /* We support multiple connected routes: this supports multiple |
1573 | * v6 link-locals, and we also support multiple addresses in the same | |
1574 | * subnet on a single interface. | |
1575 | */ | |
9db35a5e MS |
1576 | if (re1->type != ZEBRA_ROUTE_CONNECT) |
1577 | return true; | |
1578 | ||
87009d7d | 1579 | return false; |
9db35a5e MS |
1580 | } |
1581 | ||
9959f1da MS |
1582 | /* |
1583 | * Compare nexthop lists from a route and a dplane context; test whether | |
1584 | * the list installed in the FIB matches the route's list. | |
1585 | * Set 'changed_p' to 'true' if there were changes to the route's | |
1586 | * installed nexthops. | |
1587 | * | |
1588 | * Return 'false' if any ACTIVE route nexthops are not mentioned in the FIB | |
1589 | * list. | |
1590 | */ | |
1591 | static bool rib_update_nhg_from_ctx(struct nexthop_group *re_nhg, | |
1592 | const struct nexthop_group *ctx_nhg, | |
1593 | bool *changed_p) | |
1594 | { | |
1595 | bool matched_p = true; | |
1596 | struct nexthop *nexthop, *ctx_nexthop; | |
1597 | ||
1598 | /* Get the first `installed` one to check against. | |
1599 | * If the dataplane doesn't set these to be what was actually installed, | |
1600 | * it will just be whatever was in re->nhe->nhg? | |
1601 | */ | |
1602 | ctx_nexthop = ctx_nhg->nexthop; | |
1603 | ||
1604 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
1605 | || !CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1606 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1607 | ||
1608 | for (ALL_NEXTHOPS_PTR(re_nhg, nexthop)) { | |
1609 | ||
1610 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
1611 | continue; | |
1612 | ||
1613 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1614 | continue; | |
1615 | ||
1616 | /* Check for a FIB nexthop corresponding to the RIB nexthop */ | |
7483dcbe | 1617 | if (!nexthop_same(ctx_nexthop, nexthop)) { |
9959f1da MS |
1618 | /* If the FIB doesn't know about the nexthop, |
1619 | * it's not installed | |
1620 | */ | |
1621 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || | |
1622 | IS_ZEBRA_DEBUG_NHG_DETAIL) { | |
1623 | zlog_debug("%s: no ctx match for rib nh %pNHv %s", | |
1624 | __func__, nexthop, | |
1625 | (CHECK_FLAG(nexthop->flags, | |
1626 | NEXTHOP_FLAG_FIB) ? | |
1627 | "(FIB)":"")); | |
1628 | } | |
1629 | matched_p = false; | |
1630 | ||
1631 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1632 | *changed_p = true; | |
1633 | ||
1634 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1635 | ||
1636 | /* Keep checking nexthops */ | |
1637 | continue; | |
1638 | } | |
1639 | ||
1640 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1641 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1642 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1643 | zlog_debug("%s: rib nh %pNHv -> installed", | |
1644 | __func__, nexthop); | |
1645 | ||
1646 | *changed_p = true; | |
1647 | } | |
1648 | ||
1649 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1650 | } else { | |
1651 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1652 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1653 | zlog_debug("%s: rib nh %pNHv -> uninstalled", | |
1654 | __func__, nexthop); | |
1655 | ||
1656 | *changed_p = true; | |
1657 | } | |
1658 | ||
1659 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1660 | } | |
1661 | ||
1662 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1663 | } | |
1664 | ||
1665 | return matched_p; | |
1666 | } | |
1667 | ||
e5ac2adf | 1668 | /* |
78bf56b0 MS |
1669 | * Update a route from a dplane context. This consolidates common code |
1670 | * that can be used in processing of results from FIB updates, and in | |
1671 | * async notification processing. | |
efe6c026 | 1672 | * The return is 'true' if the installed nexthops changed; 'false' otherwise. |
e5ac2adf | 1673 | */ |
efe6c026 MS |
1674 | static bool rib_update_re_from_ctx(struct route_entry *re, |
1675 | struct route_node *rn, | |
1676 | struct zebra_dplane_ctx *ctx) | |
78bf56b0 | 1677 | { |
9959f1da | 1678 | struct nexthop *nexthop; |
941e261c MS |
1679 | bool matched; |
1680 | const struct nexthop_group *ctxnhg; | |
9959f1da | 1681 | struct nexthop_group *re_nhg; |
efe6c026 MS |
1682 | bool is_selected = false; /* Is 're' currently the selected re? */ |
1683 | bool changed_p = false; /* Change to nexthops? */ | |
1684 | rib_dest_t *dest; | |
bd47f3a3 JU |
1685 | struct vrf *vrf; |
1686 | ||
1687 | vrf = vrf_lookup_by_id(re->vrf_id); | |
78bf56b0 | 1688 | |
efe6c026 MS |
1689 | dest = rib_dest_from_rnode(rn); |
1690 | if (dest) | |
1691 | is_selected = (re == dest->selected_fib); | |
1692 | ||
1693 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2919eea8 DS |
1694 | zlog_debug("update_from_ctx: %s(%u:%u):%pRN: %sSELECTED, re %p", |
1695 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
9db35a5e | 1696 | (is_selected ? "" : "NOT "), re); |
efe6c026 MS |
1697 | |
1698 | /* Update zebra's nexthop FIB flag for each nexthop that was installed. | |
941e261c | 1699 | * If the installed set differs from the set requested by the rib/owner, |
efe6c026 MS |
1700 | * we use the fib-specific nexthop-group to record the actual FIB |
1701 | * status. | |
78bf56b0 | 1702 | */ |
a126f120 MS |
1703 | matched = false; |
1704 | ctxnhg = dplane_ctx_get_ng(ctx); | |
941e261c | 1705 | |
9959f1da | 1706 | /* Check route's fib group and incoming notif group for equivalence. |
986a6617 SW |
1707 | * |
1708 | * Let's assume the nexthops are ordered here to save time. | |
941e261c | 1709 | */ |
9959f1da MS |
1710 | /* TODO -- this isn't testing or comparing the FIB flags; we should |
1711 | * do a more explicit loop, checking the incoming notification's flags. | |
1712 | */ | |
a126f120 MS |
1713 | if (re->fib_ng.nexthop && ctxnhg->nexthop && |
1714 | nexthop_group_equal(&re->fib_ng, ctxnhg)) | |
986a6617 | 1715 | matched = true; |
941e261c MS |
1716 | |
1717 | /* If the new FIB set matches the existing FIB set, we're done. */ | |
1718 | if (matched) { | |
1719 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1720 | zlog_debug( |
2919eea8 DS |
1721 | "%s(%u:%u):%pRN update_from_ctx(): existing fib nhg, no change", |
1722 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
9959f1da | 1723 | goto check_backups; |
941e261c | 1724 | |
7483dcbe | 1725 | } else if (CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG)) { |
941e261c MS |
1726 | /* |
1727 | * Free stale fib list and move on to check the rib nhg. | |
1728 | */ | |
1729 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1730 | zlog_debug( |
2919eea8 DS |
1731 | "%s(%u:%u):%pRN update_from_ctx(): replacing fib nhg", |
1732 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1733 | nexthops_free(re->fib_ng.nexthop); |
1734 | re->fib_ng.nexthop = NULL; | |
efe6c026 | 1735 | |
7483dcbe MS |
1736 | UNSET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); |
1737 | ||
efe6c026 MS |
1738 | /* Note that the installed nexthops have changed */ |
1739 | changed_p = true; | |
941e261c MS |
1740 | } else { |
1741 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1742 | zlog_debug( |
1743 | "%s(%u:%u):%pRN update_from_ctx(): no fib nhg", | |
1744 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1745 | } |
1746 | ||
1747 | /* | |
1748 | * Compare with the rib nexthop group. The comparison here is different: | |
1749 | * the RIB group may be a superset of the list installed in the FIB. We | |
1750 | * walk the RIB group, looking for the 'installable' candidate | |
1751 | * nexthops, and then check those against the set | |
1752 | * that is actually installed. | |
986a6617 SW |
1753 | * |
1754 | * Assume nexthops are ordered here as well. | |
941e261c | 1755 | */ |
986a6617 | 1756 | |
9959f1da | 1757 | /* If nothing is installed, we can skip some of the checking/comparison |
1f6a5aca MS |
1758 | * of nexthops. |
1759 | */ | |
9959f1da | 1760 | if (ctxnhg->nexthop == NULL) { |
1f6a5aca MS |
1761 | changed_p = true; |
1762 | goto no_nexthops; | |
1763 | } | |
1764 | ||
9959f1da | 1765 | matched = rib_update_nhg_from_ctx(&(re->nhe->nhg), ctxnhg, &changed_p); |
78bf56b0 | 1766 | |
941e261c MS |
1767 | /* If all nexthops were processed, we're done */ |
1768 | if (matched) { | |
1769 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1770 | zlog_debug( |
2919eea8 DS |
1771 | "%s(%u:%u):%pRN update_from_ctx(): rib nhg matched, changed '%s'", |
1772 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
1773 | (changed_p ? "true" : "false")); | |
9959f1da | 1774 | goto check_backups; |
941e261c | 1775 | } |
78bf56b0 | 1776 | |
1f6a5aca MS |
1777 | no_nexthops: |
1778 | ||
941e261c MS |
1779 | /* FIB nexthop set differs from the RIB set: |
1780 | * create a fib-specific nexthop-group | |
1781 | */ | |
1782 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1783 | zlog_debug( |
2919eea8 DS |
1784 | "%s(%u:%u):%pRN update_from_ctx(): changed %s, adding new fib nhg%s", |
1785 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
7483dcbe MS |
1786 | (changed_p ? "true" : "false"), |
1787 | ctxnhg->nexthop != NULL ? "" : " (empty)"); | |
941e261c | 1788 | |
7483dcbe MS |
1789 | /* Set the flag about the dedicated fib list */ |
1790 | SET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); | |
188a00e0 MS |
1791 | if (ctxnhg->nexthop) |
1792 | copy_nexthops(&(re->fib_ng.nexthop), ctxnhg->nexthop, NULL); | |
941e261c | 1793 | |
9959f1da MS |
1794 | check_backups: |
1795 | ||
1796 | /* | |
1797 | * Check the status of the route's backup nexthops, if any. | |
1798 | * The logic for backups is somewhat different: if any backup is | |
1799 | * installed, a new fib nhg will be attached to the route. | |
1800 | */ | |
1801 | re_nhg = zebra_nhg_get_backup_nhg(re->nhe); | |
1802 | if (re_nhg == NULL) | |
1803 | goto done; /* No backup nexthops */ | |
1804 | ||
1805 | /* First check the route's 'fib' list of backups, if it's present | |
1806 | * from some previous event. | |
1807 | */ | |
1808 | re_nhg = &re->fib_backup_ng; | |
1809 | ctxnhg = dplane_ctx_get_backup_ng(ctx); | |
1810 | ||
1811 | matched = false; | |
1812 | if (re_nhg->nexthop && ctxnhg && nexthop_group_equal(re_nhg, ctxnhg)) | |
1813 | matched = true; | |
1814 | ||
1815 | /* If the new FIB set matches an existing FIB set, we're done. */ | |
1816 | if (matched) { | |
1817 | if (IS_ZEBRA_DEBUG_RIB) | |
1818 | zlog_debug( | |
2919eea8 DS |
1819 | "%s(%u):%pRN update_from_ctx(): existing fib backup nhg, no change", |
1820 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1821 | goto done; |
1822 | ||
1823 | } else if (re->fib_backup_ng.nexthop) { | |
1824 | /* | |
1825 | * Free stale fib backup list and move on to check | |
1826 | * the route's backups. | |
1827 | */ | |
1828 | if (IS_ZEBRA_DEBUG_RIB) | |
1829 | zlog_debug( | |
2919eea8 DS |
1830 | "%s(%u):%pRN update_from_ctx(): replacing fib backup nhg", |
1831 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1832 | nexthops_free(re->fib_backup_ng.nexthop); |
1833 | re->fib_backup_ng.nexthop = NULL; | |
1834 | ||
1835 | /* Note that the installed nexthops have changed */ | |
1836 | changed_p = true; | |
1837 | } else { | |
1838 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1839 | zlog_debug( |
1840 | "%s(%u):%pRN update_from_ctx(): no fib backup nhg", | |
1841 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1842 | } |
1843 | ||
1844 | /* | |
7483dcbe | 1845 | * If a FIB backup nexthop set exists, attach a copy |
9959f1da MS |
1846 | * to the route if any backup is installed |
1847 | */ | |
1848 | if (ctxnhg && ctxnhg->nexthop) { | |
1849 | ||
1850 | for (ALL_NEXTHOPS_PTR(ctxnhg, nexthop)) { | |
1851 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1852 | break; | |
1853 | } | |
1854 | ||
1855 | /* If no installed backups, we're done */ | |
1856 | if (nexthop == NULL) | |
1857 | goto done; | |
1858 | ||
1859 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1860 | zlog_debug( |
1861 | "%s(%u):%pRN update_from_ctx(): changed %s, adding new backup fib nhg", | |
1862 | VRF_LOGNAME(vrf), re->vrf_id, rn, | |
1863 | (changed_p ? "true" : "false")); | |
9959f1da MS |
1864 | |
1865 | copy_nexthops(&(re->fib_backup_ng.nexthop), ctxnhg->nexthop, | |
1866 | NULL); | |
1867 | } | |
1868 | ||
941e261c | 1869 | done: |
9959f1da | 1870 | |
efe6c026 | 1871 | return changed_p; |
78bf56b0 MS |
1872 | } |
1873 | ||
e5ac2adf | 1874 | /* |
fad4d69c MS |
1875 | * Helper to locate a zebra route-node from a dplane context. This is used |
1876 | * when processing dplane results, e.g. Note well: the route-node is returned | |
1877 | * with a ref held - route_unlock_node() must be called eventually. | |
e5ac2adf | 1878 | */ |
a7704e1b | 1879 | struct route_node *rib_find_rn_from_ctx(const struct zebra_dplane_ctx *ctx) |
e5ac2adf MS |
1880 | { |
1881 | struct route_table *table = NULL; | |
1882 | struct route_node *rn = NULL; | |
e5ac2adf MS |
1883 | const struct prefix *dest_pfx, *src_pfx; |
1884 | ||
1885 | /* Locate rn and re(s) from ctx */ | |
1886 | ||
c7c0b007 SW |
1887 | table = zebra_vrf_lookup_table_with_table_id( |
1888 | dplane_ctx_get_afi(ctx), dplane_ctx_get_safi(ctx), | |
1889 | dplane_ctx_get_vrf(ctx), dplane_ctx_get_table(ctx)); | |
e5ac2adf MS |
1890 | if (table == NULL) { |
1891 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 JU |
1892 | zlog_debug( |
1893 | "Failed to find route for ctx: no table for afi %d, safi %d, vrf %s(%u)", | |
1894 | dplane_ctx_get_afi(ctx), | |
1895 | dplane_ctx_get_safi(ctx), | |
1896 | vrf_id_to_name(dplane_ctx_get_vrf(ctx)), | |
1897 | dplane_ctx_get_vrf(ctx)); | |
e5ac2adf MS |
1898 | } |
1899 | goto done; | |
1900 | } | |
1901 | ||
fad4d69c MS |
1902 | dest_pfx = dplane_ctx_get_dest(ctx); |
1903 | src_pfx = dplane_ctx_get_src(ctx); | |
1904 | ||
1905 | rn = srcdest_rnode_get(table, dest_pfx, | |
1906 | src_pfx ? (struct prefix_ipv6 *)src_pfx : NULL); | |
1907 | ||
1908 | done: | |
1909 | return rn; | |
1910 | } | |
1911 | ||
1912 | ||
97f5b441 | 1913 | |
fad4d69c MS |
1914 | /* |
1915 | * Route-update results processing after async dataplane update. | |
1916 | */ | |
1917 | static void rib_process_result(struct zebra_dplane_ctx *ctx) | |
1918 | { | |
1919 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1920 | struct vrf *vrf; |
fad4d69c MS |
1921 | struct route_node *rn = NULL; |
1922 | struct route_entry *re = NULL, *old_re = NULL, *rib; | |
1923 | bool is_update = false; | |
fad4d69c MS |
1924 | enum dplane_op_e op; |
1925 | enum zebra_dplane_result status; | |
fad4d69c | 1926 | uint32_t seq; |
9db35a5e | 1927 | rib_dest_t *dest; |
efe6c026 | 1928 | bool fib_changed = false; |
77b38a4a | 1929 | struct rib_table_info *info; |
f99f1ff5 | 1930 | bool rt_delete = false; |
97f5b441 | 1931 | |
fad4d69c | 1932 | zvrf = vrf_info_lookup(dplane_ctx_get_vrf(ctx)); |
bd47f3a3 | 1933 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
e5ac2adf | 1934 | |
fad4d69c MS |
1935 | /* Locate rn and re(s) from ctx */ |
1936 | rn = rib_find_rn_from_ctx(ctx); | |
e5ac2adf MS |
1937 | if (rn == NULL) { |
1938 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 | 1939 | zlog_debug( |
69a2d597 DS |
1940 | "Failed to process dplane results: no route for %s(%u):%pRN", |
1941 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), rn); | |
e5ac2adf MS |
1942 | } |
1943 | goto done; | |
1944 | } | |
1945 | ||
9db35a5e | 1946 | dest = rib_dest_from_rnode(rn); |
77b38a4a | 1947 | info = srcdest_rnode_table_info(rn); |
e5ac2adf MS |
1948 | |
1949 | op = dplane_ctx_get_op(ctx); | |
1950 | status = dplane_ctx_get_status(ctx); | |
1951 | ||
c831033f | 1952 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1953 | zlog_debug( |
69a2d597 | 1954 | "%s(%u:%u):%pRN Processing dplane result ctx %p, op %s result %s", |
c2c02b76 | 1955 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 DS |
1956 | dplane_ctx_get_table(ctx), rn, ctx, dplane_op2str(op), |
1957 | dplane_res2str(status)); | |
e5ac2adf | 1958 | |
e5ac2adf MS |
1959 | /* |
1960 | * Update is a bit of a special case, where we may have both old and new | |
1961 | * routes to post-process. | |
1962 | */ | |
1963 | is_update = dplane_ctx_is_update(ctx); | |
1964 | ||
1965 | /* | |
1966 | * Take a pass through the routes, look for matches with the context | |
1967 | * info. | |
1968 | */ | |
1969 | RNODE_FOREACH_RE(rn, rib) { | |
1970 | ||
1971 | if (re == NULL) { | |
5709131c | 1972 | if (rib_route_match_ctx(rib, ctx, false)) |
e5ac2adf | 1973 | re = rib; |
e5ac2adf MS |
1974 | } |
1975 | ||
1976 | /* Check for old route match */ | |
1977 | if (is_update && (old_re == NULL)) { | |
5709131c | 1978 | if (rib_route_match_ctx(rib, ctx, true /*is_update*/)) |
e5ac2adf | 1979 | old_re = rib; |
e5ac2adf MS |
1980 | } |
1981 | ||
1982 | /* Have we found the routes we need to work on? */ | |
5709131c | 1983 | if (re && ((!is_update || old_re))) |
e5ac2adf | 1984 | break; |
e5ac2adf MS |
1985 | } |
1986 | ||
699dae23 DS |
1987 | seq = dplane_ctx_get_seq(ctx); |
1988 | ||
e5ac2adf MS |
1989 | /* |
1990 | * Check sequence number(s) to detect stale results before continuing | |
1991 | */ | |
60f98b23 | 1992 | if (re) { |
699dae23 | 1993 | if (re->dplane_sequence != seq) { |
60f98b23 | 1994 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1995 | zlog_debug( |
69a2d597 | 1996 | "%s(%u):%pRN Stale dplane result for re %p", |
bd47f3a3 | 1997 | VRF_LOGNAME(vrf), |
69a2d597 | 1998 | dplane_ctx_get_vrf(ctx), rn, re); |
e4876266 DS |
1999 | } else { |
2000 | if (!zrouter.asic_offloaded || | |
2001 | (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED) || | |
8d4665aa DS |
2002 | CHECK_FLAG(re->flags, |
2003 | ZEBRA_FLAG_OFFLOAD_FAILED))) { | |
2004 | UNSET_FLAG(re->status, | |
2005 | ROUTE_ENTRY_ROUTE_REPLACING); | |
e4876266 | 2006 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
8d4665aa | 2007 | } |
e4876266 | 2008 | } |
e5ac2adf MS |
2009 | } |
2010 | ||
60f98b23 DS |
2011 | if (old_re) { |
2012 | if (old_re->dplane_sequence != dplane_ctx_get_old_seq(ctx)) { | |
2013 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 2014 | zlog_debug( |
69a2d597 | 2015 | "%s(%u:%u):%pRN Stale dplane result for old_re %p", |
bd47f3a3 | 2016 | VRF_LOGNAME(vrf), |
c2c02b76 | 2017 | dplane_ctx_get_vrf(ctx), old_re->table, |
69a2d597 | 2018 | rn, old_re); |
60f98b23 | 2019 | } else |
9ef0c6ba | 2020 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_QUEUED); |
e5ac2adf MS |
2021 | } |
2022 | ||
12e7fe3a | 2023 | switch (op) { |
12e7fe3a DS |
2024 | case DPLANE_OP_ROUTE_INSTALL: |
2025 | case DPLANE_OP_ROUTE_UPDATE: | |
2026 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
677c1dd5 DS |
2027 | if (re) { |
2028 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
2029 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2030 | } | |
b9f0e5ee DS |
2031 | /* |
2032 | * On an update operation from the same route type | |
2033 | * context retrieval currently has no way to know | |
2034 | * which was the old and which was the new. | |
2035 | * So don't unset our flags that we just set. | |
2036 | * We know redistribution is ok because the | |
2037 | * old_re in this case is used for nothing | |
2038 | * more than knowing whom to contact if necessary. | |
2039 | */ | |
2040 | if (old_re && old_re != re) { | |
677c1dd5 DS |
2041 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
2042 | UNSET_FLAG(old_re->status, | |
2043 | ROUTE_ENTRY_INSTALLED); | |
2044 | } | |
f183e380 | 2045 | |
78bf56b0 | 2046 | /* Update zebra route based on the results in |
941e261c | 2047 | * the context struct. |
78bf56b0 | 2048 | */ |
941e261c | 2049 | if (re) { |
efe6c026 MS |
2050 | fib_changed = |
2051 | rib_update_re_from_ctx(re, rn, ctx); | |
2052 | ||
2053 | if (!fib_changed) { | |
2054 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 2055 | zlog_debug( |
69a2d597 | 2056 | "%s(%u:%u):%pRN no fib change for re", |
bd47f3a3 JU |
2057 | VRF_LOGNAME(vrf), |
2058 | dplane_ctx_get_vrf(ctx), | |
c2c02b76 DS |
2059 | dplane_ctx_get_table( |
2060 | ctx), | |
69a2d597 | 2061 | rn); |
12e7fe3a DS |
2062 | } |
2063 | ||
9db35a5e MS |
2064 | /* Redistribute if this is the selected re */ |
2065 | if (dest && re == dest->selected_fib) | |
ee78ed68 | 2066 | redistribute_update(rn, re, old_re); |
f183e380 MS |
2067 | } |
2068 | ||
3cdba47a DS |
2069 | /* |
2070 | * System routes are weird in that they | |
2071 | * allow multiple to be installed that match | |
2072 | * to the same prefix, so after we get the | |
2073 | * result we need to clean them up so that | |
2074 | * we can actually use them. | |
2075 | */ | |
2076 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
2077 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
2078 | zebra_rib_fixup_system(rn); | |
2079 | ||
f4c6e2a8 | 2080 | if (zvrf) |
12e7fe3a | 2081 | zvrf->installs++; |
f183e380 | 2082 | |
12e7fe3a | 2083 | /* Notify route owner */ |
e4876266 DS |
2084 | if (zebra_router_notify_on_ack()) |
2085 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_INSTALLED); | |
2086 | else { | |
2087 | if (re) { | |
2088 | if (CHECK_FLAG(re->flags, | |
2089 | ZEBRA_FLAG_OFFLOADED)) | |
2090 | zsend_route_notify_owner_ctx( | |
2091 | ctx, | |
2092 | ZAPI_ROUTE_INSTALLED); | |
2093 | if (CHECK_FLAG( | |
2094 | re->flags, | |
2095 | ZEBRA_FLAG_OFFLOAD_FAILED)) | |
2096 | zsend_route_notify_owner_ctx( | |
2097 | ctx, | |
2098 | ZAPI_ROUTE_FAIL_INSTALL); | |
2099 | } | |
2100 | } | |
12e7fe3a | 2101 | } else { |
7a230a9d | 2102 | if (re) { |
677c1dd5 | 2103 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); |
7a230a9d DS |
2104 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
2105 | } if (old_re) | |
677c1dd5 DS |
2106 | SET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
2107 | if (re) | |
a7704e1b DS |
2108 | zsend_route_notify_owner( |
2109 | rn, re, ZAPI_ROUTE_FAIL_INSTALL, | |
2110 | info->afi, info->safi); | |
97f5b441 | 2111 | |
69a2d597 | 2112 | zlog_warn("%s(%u:%u):%pRN: Route install failed", |
bd47f3a3 | 2113 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 | 2114 | dplane_ctx_get_table(ctx), rn); |
12e7fe3a DS |
2115 | } |
2116 | break; | |
2117 | case DPLANE_OP_ROUTE_DELETE: | |
f99f1ff5 | 2118 | rt_delete = true; |
677c1dd5 DS |
2119 | if (re) |
2120 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
2121 | /* |
2122 | * In the delete case, the zebra core datastructs were | |
2123 | * updated (or removed) at the time the delete was issued, | |
2124 | * so we're just notifying the route owner. | |
e5ac2adf | 2125 | */ |
12e7fe3a | 2126 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
677c1dd5 DS |
2127 | if (re) { |
2128 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2129 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
2130 | } | |
12e7fe3a | 2131 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_REMOVED); |
e5ac2adf | 2132 | |
12e7fe3a DS |
2133 | if (zvrf) |
2134 | zvrf->removals++; | |
2135 | } else { | |
677c1dd5 DS |
2136 | if (re) |
2137 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
2138 | zsend_route_notify_owner_ctx(ctx, |
2139 | ZAPI_ROUTE_REMOVE_FAIL); | |
e5ac2adf | 2140 | |
69a2d597 | 2141 | zlog_warn("%s(%u:%u):%pRN: Route Deletion failure", |
bd47f3a3 | 2142 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 | 2143 | dplane_ctx_get_table(ctx), rn); |
12e7fe3a | 2144 | } |
3cdba47a DS |
2145 | |
2146 | /* | |
2147 | * System routes are weird in that they | |
2148 | * allow multiple to be installed that match | |
2149 | * to the same prefix, so after we get the | |
2150 | * result we need to clean them up so that | |
2151 | * we can actually use them. | |
2152 | */ | |
2153 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
2154 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
2155 | zebra_rib_fixup_system(rn); | |
12e7fe3a | 2156 | break; |
d37f4d6c MS |
2157 | default: |
2158 | break; | |
e5ac2adf | 2159 | } |
699dae23 | 2160 | |
f99f1ff5 | 2161 | zebra_rib_evaluate_rn_nexthops(rn, seq, rt_delete); |
a1494c25 | 2162 | zebra_rib_evaluate_mpls(rn); |
e5ac2adf MS |
2163 | done: |
2164 | ||
5f27bcba DS |
2165 | if (rn) |
2166 | route_unlock_node(rn); | |
e5ac2adf MS |
2167 | } |
2168 | ||
9959f1da MS |
2169 | /* |
2170 | * Count installed/FIB nexthops | |
2171 | */ | |
2172 | static int rib_count_installed_nh(struct route_entry *re) | |
2173 | { | |
2174 | int count = 0; | |
2175 | struct nexthop *nexthop; | |
2176 | struct nexthop_group *nhg; | |
2177 | ||
2178 | nhg = rib_get_fib_nhg(re); | |
2179 | ||
2180 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2181 | /* The meaningful flag depends on where the installed | |
2182 | * nexthops reside. | |
2183 | */ | |
43a9f66c | 2184 | if (nhg == &(re->fib_ng)) { |
9959f1da MS |
2185 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) |
2186 | count++; | |
2187 | } else { | |
2188 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
2189 | count++; | |
2190 | } | |
2191 | } | |
2192 | ||
43a9f66c MS |
2193 | nhg = rib_get_fib_backup_nhg(re); |
2194 | if (nhg) { | |
2195 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2196 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2197 | count++; | |
2198 | } | |
9959f1da MS |
2199 | } |
2200 | ||
2201 | return count; | |
2202 | } | |
2203 | ||
54818e3b MS |
2204 | /* |
2205 | * Handle notification from async dataplane: the dataplane has detected | |
2206 | * some change to a route, and notifies zebra so that the control plane | |
2207 | * can reflect that change. | |
2208 | */ | |
2209 | static void rib_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2210 | { | |
2211 | struct route_node *rn = NULL; | |
efe6c026 | 2212 | struct route_entry *re = NULL; |
bd47f3a3 | 2213 | struct vrf *vrf; |
efe6c026 | 2214 | struct nexthop *nexthop; |
941e261c | 2215 | rib_dest_t *dest; |
efe6c026 | 2216 | bool fib_changed = false; |
941e261c | 2217 | bool debug_p = IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_RIB; |
efe6c026 | 2218 | int start_count, end_count; |
898b4a6d | 2219 | |
bd47f3a3 | 2220 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
54818e3b | 2221 | |
54818e3b MS |
2222 | /* Locate rn and re(s) from ctx */ |
2223 | rn = rib_find_rn_from_ctx(ctx); | |
2224 | if (rn == NULL) { | |
941e261c | 2225 | if (debug_p) { |
bd47f3a3 | 2226 | zlog_debug( |
898b4a6d | 2227 | "Failed to process dplane notification: no routes for %s(%u:%u):%pRN", |
bd47f3a3 | 2228 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2229 | dplane_ctx_get_table(ctx), rn); |
54818e3b MS |
2230 | } |
2231 | goto done; | |
2232 | } | |
2233 | ||
941e261c | 2234 | dest = rib_dest_from_rnode(rn); |
54818e3b | 2235 | |
efe6c026 | 2236 | if (debug_p) |
898b4a6d | 2237 | zlog_debug("%s(%u:%u):%pRN Processing dplane notif ctx %p", |
c2c02b76 | 2238 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2239 | dplane_ctx_get_table(ctx), rn, ctx); |
54818e3b MS |
2240 | |
2241 | /* | |
2242 | * Take a pass through the routes, look for matches with the context | |
2243 | * info. | |
2244 | */ | |
efe6c026 MS |
2245 | RNODE_FOREACH_RE(rn, re) { |
2246 | if (rib_route_match_ctx(re, ctx, false /*!update*/)) | |
54818e3b MS |
2247 | break; |
2248 | } | |
2249 | ||
2250 | /* No match? Nothing we can do */ | |
2251 | if (re == NULL) { | |
941e261c | 2252 | if (debug_p) |
bd47f3a3 | 2253 | zlog_debug( |
898b4a6d | 2254 | "%s(%u:%u):%pRN Unable to process dplane notification: no entry for type %s", |
bd47f3a3 | 2255 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2256 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 | 2257 | zebra_route_string(dplane_ctx_get_type(ctx))); |
54818e3b MS |
2258 | |
2259 | goto done; | |
2260 | } | |
2261 | ||
272e8903 | 2262 | /* Ensure we clear the QUEUED flag */ |
a0e11736 DS |
2263 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
2264 | UNSET_FLAG(re->status, ROUTE_ENTRY_ROUTE_REPLACING); | |
272e8903 | 2265 | |
4c0b5436 MS |
2266 | /* Is this a notification that ... matters? We mostly care about |
2267 | * the route that is currently selected for installation; we may also | |
2268 | * get an un-install notification, and handle that too. | |
941e261c MS |
2269 | */ |
2270 | if (re != dest->selected_fib) { | |
4c0b5436 MS |
2271 | /* |
2272 | * If we need to, clean up after a delete that was part of | |
2273 | * an update operation. | |
941e261c | 2274 | */ |
4c0b5436 MS |
2275 | end_count = 0; |
2276 | for (ALL_NEXTHOPS_PTR(dplane_ctx_get_ng(ctx), nexthop)) { | |
2277 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2278 | end_count++; | |
2279 | } | |
2280 | ||
2281 | /* If no nexthops or none installed, ensure that this re | |
2282 | * gets its 'installed' flag cleared. | |
2283 | */ | |
2284 | if (end_count == 0) { | |
2285 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) | |
2286 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2287 | if (debug_p) | |
bd47f3a3 | 2288 | zlog_debug( |
898b4a6d | 2289 | "%s(%u:%u):%pRN dplane notif, uninstalled type %s route", |
bd47f3a3 | 2290 | VRF_LOGNAME(vrf), |
c2c02b76 | 2291 | dplane_ctx_get_vrf(ctx), |
898b4a6d | 2292 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 JU |
2293 | zebra_route_string( |
2294 | dplane_ctx_get_type(ctx))); | |
4c0b5436 MS |
2295 | } else { |
2296 | /* At least report on the event. */ | |
2297 | if (debug_p) | |
bd47f3a3 | 2298 | zlog_debug( |
898b4a6d | 2299 | "%s(%u:%u):%pRN dplane notif, but type %s not selected_fib", |
bd47f3a3 | 2300 | VRF_LOGNAME(vrf), |
c2c02b76 | 2301 | dplane_ctx_get_vrf(ctx), |
898b4a6d | 2302 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 JU |
2303 | zebra_route_string( |
2304 | dplane_ctx_get_type(ctx))); | |
4c0b5436 | 2305 | } |
941e261c | 2306 | goto done; |
a0e11736 DS |
2307 | } else { |
2308 | uint32_t flags = dplane_ctx_get_flags(ctx); | |
2309 | ||
2310 | if (CHECK_FLAG(flags, ZEBRA_FLAG_OFFLOADED)) { | |
2311 | UNSET_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED); | |
2312 | SET_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED); | |
2313 | } | |
2314 | if (CHECK_FLAG(flags, ZEBRA_FLAG_OFFLOAD_FAILED)) { | |
2315 | UNSET_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED); | |
2316 | SET_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED); | |
2317 | } | |
2318 | if (CHECK_FLAG(flags, ZEBRA_FLAG_TRAPPED)) | |
2319 | SET_FLAG(re->flags, ZEBRA_FLAG_TRAPPED); | |
941e261c MS |
2320 | } |
2321 | ||
efe6c026 MS |
2322 | /* We'll want to determine whether the installation status of the |
2323 | * route has changed: we'll check the status before processing, | |
2324 | * and then again if there's been a change. | |
2325 | */ | |
2326 | start_count = 0; | |
1c30d64b | 2327 | |
9959f1da MS |
2328 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) |
2329 | start_count = rib_count_installed_nh(re); | |
efe6c026 | 2330 | |
54818e3b MS |
2331 | /* Update zebra's nexthop FIB flags based on the context struct's |
2332 | * nexthops. | |
2333 | */ | |
efe6c026 | 2334 | fib_changed = rib_update_re_from_ctx(re, rn, ctx); |
54818e3b | 2335 | |
efe6c026 MS |
2336 | if (!fib_changed) { |
2337 | if (debug_p) | |
bd47f3a3 | 2338 | zlog_debug( |
898b4a6d | 2339 | "%s(%u:%u):%pRN dplane notification: rib_update returns FALSE", |
bd47f3a3 | 2340 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2341 | dplane_ctx_get_table(ctx), rn); |
54818e3b MS |
2342 | } |
2343 | ||
188a00e0 MS |
2344 | /* |
2345 | * Perform follow-up work if the actual status of the prefix | |
efe6c026 | 2346 | * changed. |
941e261c | 2347 | */ |
9959f1da | 2348 | end_count = rib_count_installed_nh(re); |
941e261c | 2349 | |
188a00e0 MS |
2350 | /* Various fib transitions: changed nexthops; from installed to |
2351 | * not-installed; or not-installed to installed. | |
efe6c026 | 2352 | */ |
06525c4f DS |
2353 | if (zrouter.asic_notification_nexthop_control) { |
2354 | if (start_count > 0 && end_count > 0) { | |
2355 | if (debug_p) | |
2356 | zlog_debug( | |
2357 | "%s(%u:%u):%pRN applied nexthop changes from dplane notification", | |
2358 | VRF_LOGNAME(vrf), | |
2359 | dplane_ctx_get_vrf(ctx), | |
2360 | dplane_ctx_get_table(ctx), rn); | |
188a00e0 | 2361 | |
06525c4f DS |
2362 | /* Changed nexthops - update kernel/others */ |
2363 | dplane_route_notif_update(rn, re, | |
2364 | DPLANE_OP_ROUTE_UPDATE, ctx); | |
188a00e0 | 2365 | |
06525c4f DS |
2366 | } else if (start_count == 0 && end_count > 0) { |
2367 | if (debug_p) | |
2368 | zlog_debug( | |
2369 | "%s(%u:%u):%pRN installed transition from dplane notification", | |
2370 | VRF_LOGNAME(vrf), | |
2371 | dplane_ctx_get_vrf(ctx), | |
2372 | dplane_ctx_get_table(ctx), rn); | |
efe6c026 | 2373 | |
06525c4f DS |
2374 | /* We expect this to be the selected route, so we want |
2375 | * to tell others about this transition. | |
2376 | */ | |
2377 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
efe6c026 | 2378 | |
06525c4f DS |
2379 | /* Changed nexthops - update kernel/others */ |
2380 | dplane_route_notif_update(rn, re, | |
2381 | DPLANE_OP_ROUTE_UPDATE, ctx); | |
188a00e0 | 2382 | |
06525c4f DS |
2383 | /* Redistribute, lsp, and nht update */ |
2384 | redistribute_update(rn, re, NULL); | |
efe6c026 | 2385 | |
06525c4f DS |
2386 | } else if (start_count > 0 && end_count == 0) { |
2387 | if (debug_p) | |
2388 | zlog_debug( | |
2389 | "%s(%u:%u):%pRN un-installed transition from dplane notification", | |
2390 | VRF_LOGNAME(vrf), | |
2391 | dplane_ctx_get_vrf(ctx), | |
2392 | dplane_ctx_get_table(ctx), rn); | |
efe6c026 | 2393 | |
06525c4f DS |
2394 | /* Transition from _something_ installed to _nothing_ |
2395 | * installed. | |
2396 | */ | |
2397 | /* We expect this to be the selected route, so we want | |
2398 | * to tell others about this transistion. | |
2399 | */ | |
2400 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
efe6c026 | 2401 | |
06525c4f DS |
2402 | /* Changed nexthops - update kernel/others */ |
2403 | dplane_route_notif_update(rn, re, | |
2404 | DPLANE_OP_ROUTE_DELETE, ctx); | |
188a00e0 | 2405 | |
06525c4f DS |
2406 | /* Redistribute, lsp, and nht update */ |
2407 | redistribute_delete(rn, re, NULL); | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | if (!zebra_router_notify_on_ack()) { | |
2412 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED)) | |
2413 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_INSTALLED); | |
2414 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED)) | |
2415 | zsend_route_notify_owner_ctx(ctx, | |
2416 | ZAPI_ROUTE_FAIL_INSTALL); | |
9287b4c5 | 2417 | } |
efe6c026 | 2418 | |
9287b4c5 | 2419 | /* Make any changes visible for lsp and nexthop-tracking processing */ |
f99f1ff5 SP |
2420 | zebra_rib_evaluate_rn_nexthops(rn, zebra_router_get_next_sequence(), |
2421 | false); | |
efe6c026 | 2422 | |
9287b4c5 | 2423 | zebra_rib_evaluate_mpls(rn); |
941e261c | 2424 | |
54818e3b | 2425 | done: |
941e261c MS |
2426 | if (rn) |
2427 | route_unlock_node(rn); | |
54818e3b MS |
2428 | } |
2429 | ||
32367e7a MS |
2430 | /* |
2431 | * Process a node from the EVPN/VXLAN subqueue. | |
2432 | */ | |
2433 | static void process_subq_evpn(struct listnode *lnode) | |
2434 | { | |
2435 | struct wq_evpn_wrapper *w; | |
2436 | ||
2437 | /* In general, the list node points to a wrapper object | |
2438 | * holding the info necessary to make some update. | |
2439 | */ | |
2440 | w = listgetdata(lnode); | |
2441 | if (!w) | |
2442 | return; | |
2443 | ||
2444 | if (w->type == WQ_EVPN_WRAPPER_TYPE_VRFROUTE) { | |
2445 | if (w->add_p) | |
7f7e49d1 | 2446 | zebra_vxlan_evpn_vrf_route_add(w->vrf_id, &w->macaddr, |
32367e7a MS |
2447 | &w->ip, &w->prefix); |
2448 | else | |
2449 | zebra_vxlan_evpn_vrf_route_del(w->vrf_id, &w->ip, | |
2450 | &w->prefix); | |
2451 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_ES) { | |
2452 | if (w->add_p) | |
2453 | zebra_evpn_remote_es_add(&w->esi, w->ip.ipaddr_v4, | |
2454 | w->esr_rxed, w->df_alg, | |
2455 | w->df_pref); | |
2456 | else | |
2457 | zebra_evpn_remote_es_del(&w->esi, w->ip.ipaddr_v4); | |
7f7e49d1 MS |
2458 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_MACIP) { |
2459 | uint16_t ipa_len = 0; | |
2460 | ||
2461 | if (w->ip.ipa_type == IPADDR_V4) | |
2462 | ipa_len = IPV4_MAX_BYTELEN; | |
2463 | else if (w->ip.ipa_type == IPADDR_V6) | |
2464 | ipa_len = IPV6_MAX_BYTELEN; | |
2465 | ||
2466 | if (w->add_p) | |
2467 | zebra_evpn_rem_macip_add(w->vni, &w->macaddr, ipa_len, | |
2468 | &w->ip, w->flags, w->seq, | |
2469 | w->vtep_ip, &w->esi); | |
2470 | else | |
2471 | zebra_evpn_rem_macip_del(w->vni, &w->macaddr, ipa_len, | |
2472 | &w->ip, w->vtep_ip); | |
7e5b0b2b MS |
2473 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_VTEP) { |
2474 | if (w->add_p) | |
2475 | zebra_vxlan_remote_vtep_add(w->vrf_id, w->vni, | |
2476 | w->vtep_ip, w->flags); | |
2477 | else | |
2478 | zebra_vxlan_remote_vtep_del(w->vrf_id, w->vni, | |
2479 | w->vtep_ip); | |
32367e7a MS |
2480 | } |
2481 | ||
7e5b0b2b | 2482 | |
32367e7a MS |
2483 | XFREE(MTYPE_WQ_WRAPPER, w); |
2484 | } | |
2485 | ||
04bec7b2 MS |
2486 | /* |
2487 | * Process the nexthop-group workqueue subqueue | |
2488 | */ | |
e22e8001 | 2489 | static void process_subq_nhg(struct listnode *lnode) |
e96f9203 | 2490 | { |
04bec7b2 MS |
2491 | struct nhg_ctx *ctx; |
2492 | struct nhg_hash_entry *nhe, *newnhe; | |
2493 | struct wq_nhg_wrapper *w; | |
4bbbd1f6 | 2494 | uint8_t qindex = META_QUEUE_NHG; |
5110a0c6 | 2495 | |
04bec7b2 | 2496 | w = listgetdata(lnode); |
e22e8001 | 2497 | |
04bec7b2 | 2498 | if (!w) |
e22e8001 SW |
2499 | return; |
2500 | ||
04bec7b2 MS |
2501 | /* Two types of object - an update from the local kernel, or |
2502 | * an nhg update from a daemon. | |
2503 | */ | |
2504 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) { | |
2505 | ctx = w->u.ctx; | |
2506 | ||
2507 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2508 | zlog_debug( | |
7a96ccc7 DS |
2509 | "NHG Context id=%u dequeued from sub-queue %s", |
2510 | ctx->id, subqueue2str(qindex)); | |
04bec7b2 MS |
2511 | |
2512 | ||
2513 | /* Process nexthop group updates coming 'up' from the OS */ | |
2514 | nhg_ctx_process(ctx); | |
e22e8001 | 2515 | |
04bec7b2 MS |
2516 | } else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) { |
2517 | nhe = w->u.nhe; | |
2518 | ||
2519 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
7a96ccc7 DS |
2520 | zlog_debug("NHG %u dequeued from sub-queue %s", nhe->id, |
2521 | subqueue2str(qindex)); | |
04bec7b2 MS |
2522 | |
2523 | /* Process incoming nhg update, probably from a proto daemon */ | |
2524 | newnhe = zebra_nhg_proto_add(nhe->id, nhe->type, | |
2525 | nhe->zapi_instance, | |
32367e7a | 2526 | nhe->zapi_session, &nhe->nhg, 0); |
04bec7b2 MS |
2527 | |
2528 | /* Report error to daemon via ZAPI */ | |
2529 | if (newnhe == NULL) | |
2530 | zsend_nhg_notify(nhe->type, nhe->zapi_instance, | |
2531 | nhe->zapi_session, nhe->id, | |
2532 | ZAPI_NHG_FAIL_INSTALL); | |
2533 | ||
2534 | /* Free temp nhe - we own that memory. */ | |
2535 | zebra_nhg_free(nhe); | |
2536 | } | |
e22e8001 | 2537 | |
32367e7a | 2538 | XFREE(MTYPE_WQ_WRAPPER, w); |
e22e8001 SW |
2539 | } |
2540 | ||
53216dff DS |
2541 | static void process_subq_early_label(struct listnode *lnode) |
2542 | { | |
2543 | struct wq_label_wrapper *w = listgetdata(lnode); | |
2544 | struct zebra_vrf *zvrf; | |
2545 | ||
2546 | if (!w) | |
2547 | return; | |
2548 | ||
2549 | zvrf = vrf_info_lookup(w->vrf_id); | |
2550 | if (!zvrf) { | |
2551 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2552 | return; | |
2553 | } | |
2554 | ||
2555 | switch (w->type) { | |
2556 | case WQ_LABEL_FTN_UNINSTALL: | |
2557 | zebra_mpls_ftn_uninstall(zvrf, w->ltype, &w->p, w->route_type, | |
2558 | w->route_instance); | |
2559 | break; | |
2560 | case WQ_LABEL_LABELS_PROCESS: | |
2561 | zebra_mpls_zapi_labels_process(w->add_p, zvrf, &w->zl); | |
2562 | break; | |
2563 | } | |
2564 | ||
2565 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2566 | } | |
2567 | ||
e22e8001 SW |
2568 | static void process_subq_route(struct listnode *lnode, uint8_t qindex) |
2569 | { | |
2570 | struct route_node *rnode = NULL; | |
2571 | rib_dest_t *dest = NULL; | |
2572 | struct zebra_vrf *zvrf = NULL; | |
5110a0c6 | 2573 | |
d62a17ae | 2574 | rnode = listgetdata(lnode); |
2575 | dest = rib_dest_from_rnode(rnode); | |
c2c02b76 DS |
2576 | assert(dest); |
2577 | ||
2578 | zvrf = rib_dest_vrf(dest); | |
41ec9222 | 2579 | |
d62a17ae | 2580 | rib_process(rnode); |
5110a0c6 | 2581 | |
d62a17ae | 2582 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
7e26b9d4 | 2583 | struct route_entry *re = NULL; |
efe6c026 | 2584 | |
7e26b9d4 DS |
2585 | /* |
2586 | * rib_process may have freed the dest | |
2587 | * as part of the garbage collection. Let's | |
2588 | * prevent stupidity from happening. | |
2589 | */ | |
2590 | dest = rib_dest_from_rnode(rnode); | |
2591 | if (dest) | |
2592 | re = re_list_first(&dest->routes); | |
2593 | ||
7a96ccc7 | 2594 | zlog_debug("%s(%u:%u):%pRN rn %p dequeued from sub-queue %s", |
04bec7b2 | 2595 | zvrf_name(zvrf), zvrf_id(zvrf), re ? re->table : 0, |
7a96ccc7 | 2596 | rnode, rnode, subqueue2str(qindex)); |
d62a17ae | 2597 | } |
41ec9222 | 2598 | |
d62a17ae | 2599 | if (rnode->info) |
2600 | UNSET_FLAG(rib_dest_from_rnode(rnode)->flags, | |
2601 | RIB_ROUTE_QUEUED(qindex)); | |
9fd92e3c | 2602 | |
d62a17ae | 2603 | route_unlock_node(rnode); |
e22e8001 SW |
2604 | } |
2605 | ||
d7ac4c4d | 2606 | static void rib_re_nhg_free(struct route_entry *re) |
e22e8001 | 2607 | { |
d7ac4c4d DS |
2608 | if (re->nhe && re->nhe_id) { |
2609 | assert(re->nhe->id == re->nhe_id); | |
2610 | route_entry_update_nhe(re, NULL); | |
2611 | } else if (re->nhe && re->nhe->nhg.nexthop) | |
2612 | nexthops_free(re->nhe->nhg.nexthop); | |
e22e8001 | 2613 | |
d7ac4c4d DS |
2614 | nexthops_free(re->fib_ng.nexthop); |
2615 | } | |
e22e8001 | 2616 | |
d7ac4c4d DS |
2617 | struct zebra_early_route { |
2618 | afi_t afi; | |
2619 | safi_t safi; | |
2620 | struct prefix p; | |
2621 | struct prefix_ipv6 src_p; | |
2622 | bool src_p_provided; | |
2623 | struct route_entry *re; | |
2624 | struct nhg_hash_entry *re_nhe; | |
2625 | bool startup; | |
2626 | bool deletion; | |
2627 | bool fromkernel; | |
2628 | }; | |
e22e8001 | 2629 | |
d7ac4c4d DS |
2630 | static void early_route_memory_free(struct zebra_early_route *ere) |
2631 | { | |
2632 | if (ere->re_nhe) | |
2633 | zebra_nhg_free(ere->re_nhe); | |
e22e8001 | 2634 | |
d7ac4c4d DS |
2635 | XFREE(MTYPE_RE, ere->re); |
2636 | XFREE(MTYPE_WQ_WRAPPER, ere); | |
e96f9203 DO |
2637 | } |
2638 | ||
d7ac4c4d | 2639 | static void process_subq_early_route_add(struct zebra_early_route *ere) |
e96f9203 | 2640 | { |
d7ac4c4d DS |
2641 | struct route_entry *re = ere->re; |
2642 | struct route_table *table; | |
2643 | struct nhg_hash_entry *nhe = NULL; | |
2644 | struct route_node *rn; | |
2645 | struct route_entry *same = NULL, *first_same = NULL; | |
2646 | int same_count = 0; | |
2647 | rib_dest_t *dest; | |
91f16812 | 2648 | |
d7ac4c4d DS |
2649 | /* Lookup table. */ |
2650 | table = zebra_vrf_get_table_with_table_id(ere->afi, ere->safi, | |
2651 | re->vrf_id, re->table); | |
2652 | if (!table) { | |
2653 | early_route_memory_free(ere); | |
2654 | return; | |
2655 | } | |
91f16812 | 2656 | |
d7ac4c4d DS |
2657 | if (re->nhe_id > 0) { |
2658 | nhe = zebra_nhg_lookup_id(re->nhe_id); | |
91f16812 | 2659 | |
d7ac4c4d DS |
2660 | if (!nhe) { |
2661 | /* | |
2662 | * We've received from the kernel a nexthop id | |
2663 | * that we don't have saved yet. More than likely | |
2664 | * it has not been processed and is on the | |
2665 | * queue to be processed. Let's stop what we | |
2666 | * are doing and cause the meta q to be processed | |
2667 | * storing this for later. | |
2668 | * | |
2669 | * This is being done this way because zebra | |
2670 | * runs with the assumption t | |
2671 | */ | |
2672 | flog_err( | |
2673 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
2674 | "Zebra failed to find the nexthop hash entry for id=%u in a route entry %pFX", | |
2675 | re->nhe_id, &ere->p); | |
5110a0c6 | 2676 | |
d7ac4c4d DS |
2677 | early_route_memory_free(ere); |
2678 | return; | |
d62a17ae | 2679 | } |
d7ac4c4d DS |
2680 | } else { |
2681 | /* Lookup nhe from route information */ | |
2682 | nhe = zebra_nhg_rib_find_nhe(ere->re_nhe, ere->afi); | |
2683 | if (!nhe) { | |
2684 | char buf2[PREFIX_STRLEN] = ""; | |
e96f9203 | 2685 | |
d7ac4c4d DS |
2686 | flog_err( |
2687 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
2688 | "Zebra failed to find or create a nexthop hash entry for %pFX%s%s", | |
2689 | &ere->p, ere->src_p_provided ? " from " : "", | |
2690 | ere->src_p_provided | |
2691 | ? prefix2str(&ere->src_p, buf2, | |
2692 | sizeof(buf2)) | |
2693 | : ""); | |
f52ed677 | 2694 | |
d7ac4c4d DS |
2695 | early_route_memory_free(ere); |
2696 | return; | |
2697 | } | |
2698 | } | |
5110a0c6 | 2699 | |
d7ac4c4d DS |
2700 | /* |
2701 | * Attach the re to the nhe's nexthop group. | |
2702 | * | |
2703 | * TODO: This will need to change when we start getting IDs from upper | |
2704 | * level protocols, as the refcnt might be wrong, since it checks | |
2705 | * if old_id != new_id. | |
2706 | */ | |
2707 | route_entry_update_nhe(re, nhe); | |
e22e8001 | 2708 | |
d7ac4c4d DS |
2709 | /* Make it sure prefixlen is applied to the prefix. */ |
2710 | apply_mask(&ere->p); | |
2711 | if (ere->src_p_provided) | |
2712 | apply_mask_ipv6(&ere->src_p); | |
d62a17ae | 2713 | |
d7ac4c4d DS |
2714 | /* Set default distance by route type. */ |
2715 | if (re->distance == 0) | |
2716 | re->distance = route_distance(re->type); | |
2717 | ||
2718 | /* Lookup route node.*/ | |
2719 | rn = srcdest_rnode_get(table, &ere->p, | |
2720 | ere->src_p_provided ? &ere->src_p : NULL); | |
2721 | ||
2722 | /* | |
2723 | * If same type of route are installed, treat it as a implicit | |
2724 | * withdraw. If the user has specified the No route replace semantics | |
2725 | * for the install don't do a route replace. | |
2726 | */ | |
2727 | RNODE_FOREACH_RE (rn, same) { | |
2728 | if (CHECK_FLAG(same->status, ROUTE_ENTRY_REMOVED)) { | |
2729 | same_count++; | |
2730 | continue; | |
d62a17ae | 2731 | } |
5110a0c6 | 2732 | |
d7ac4c4d DS |
2733 | /* Compare various route_entry properties */ |
2734 | if (rib_compare_routes(re, same)) { | |
2735 | same_count++; | |
5110a0c6 | 2736 | |
d7ac4c4d DS |
2737 | if (first_same == NULL) |
2738 | first_same = same; | |
2739 | } | |
d62a17ae | 2740 | } |
f52ed677 | 2741 | |
d7ac4c4d | 2742 | same = first_same; |
e22e8001 | 2743 | |
d7ac4c4d DS |
2744 | if (!ere->startup && (re->flags & ZEBRA_FLAG_SELFROUTE) && |
2745 | zrouter.asic_offloaded) { | |
2746 | if (!same) { | |
2747 | if (IS_ZEBRA_DEBUG_RIB) | |
2748 | zlog_debug( | |
2749 | "prefix: %pRN is a self route where we do not have an entry for it. Dropping this update, it's useless", | |
2750 | rn); | |
2751 | /* | |
2752 | * We are not on startup, this is a self route | |
2753 | * and we have asic offload. Which means | |
2754 | * we are getting a callback for a entry | |
2755 | * that was already deleted to the kernel | |
2756 | * but an earlier response was just handed | |
2757 | * back. Drop it on the floor | |
2758 | */ | |
2759 | early_route_memory_free(ere); | |
2760 | return; | |
2761 | } | |
2762 | } | |
4d38fdb4 | 2763 | |
d7ac4c4d DS |
2764 | /* If this route is kernel/connected route, notify the dataplane. */ |
2765 | if (RIB_SYSTEM_ROUTE(re)) { | |
2766 | /* Notify dataplane */ | |
2767 | dplane_sys_route_add(rn, re); | |
2768 | } | |
53216dff | 2769 | |
d7ac4c4d DS |
2770 | /* Link new re to node.*/ |
2771 | if (IS_ZEBRA_DEBUG_RIB) { | |
2772 | rnode_debug( | |
2773 | rn, re->vrf_id, | |
2774 | "Inserting route rn %p, re %p (%s) existing %p, same_count %d", | |
2775 | rn, re, zebra_route_string(re->type), same, same_count); | |
fc328ac9 | 2776 | |
d7ac4c4d DS |
2777 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
2778 | route_entry_dump( | |
2779 | &ere->p, | |
2780 | ere->src_p_provided ? &ere->src_p : NULL, re); | |
2781 | } | |
e22e8001 | 2782 | |
d7ac4c4d DS |
2783 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
2784 | rib_addnode(rn, re, 1); | |
4d38fdb4 | 2785 | |
d7ac4c4d DS |
2786 | /* Free implicit route.*/ |
2787 | if (same) | |
2788 | rib_delnode(rn, same); | |
04bec7b2 | 2789 | |
d7ac4c4d DS |
2790 | /* See if we can remove some RE entries that are queued for |
2791 | * removal, but won't be considered in rib processing. | |
2792 | */ | |
2793 | dest = rib_dest_from_rnode(rn); | |
2794 | RNODE_FOREACH_RE_SAFE (rn, re, same) { | |
2795 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
2796 | /* If the route was used earlier, must retain it. */ | |
2797 | if (dest && re == dest->selected_fib) | |
2798 | continue; | |
04bec7b2 | 2799 | |
d7ac4c4d DS |
2800 | if (IS_ZEBRA_DEBUG_RIB) |
2801 | rnode_debug(rn, re->vrf_id, | |
2802 | "rn %p, removing unneeded re %p", | |
2803 | rn, re); | |
e22e8001 | 2804 | |
d7ac4c4d DS |
2805 | rib_unlink(rn, re); |
2806 | } | |
2807 | } | |
e22e8001 | 2808 | |
d7ac4c4d DS |
2809 | route_unlock_node(rn); |
2810 | if (ere->re_nhe) | |
2811 | zebra_nhg_free(ere->re_nhe); | |
2812 | XFREE(MTYPE_WQ_WRAPPER, ere); | |
e22e8001 SW |
2813 | } |
2814 | ||
d7ac4c4d | 2815 | static void process_subq_early_route_delete(struct zebra_early_route *ere) |
04bec7b2 | 2816 | { |
d7ac4c4d DS |
2817 | struct route_table *table; |
2818 | struct route_node *rn; | |
2819 | struct route_entry *re; | |
2820 | struct route_entry *fib = NULL; | |
2821 | struct route_entry *same = NULL; | |
2822 | struct nexthop *rtnh; | |
2823 | char buf2[INET6_ADDRSTRLEN]; | |
2824 | rib_dest_t *dest; | |
04bec7b2 | 2825 | |
d7ac4c4d DS |
2826 | if (ere->src_p_provided) |
2827 | assert(!ere->src_p.prefixlen || ere->afi == AFI_IP6); | |
2828 | ||
2829 | /* Lookup table. */ | |
2830 | table = zebra_vrf_lookup_table_with_table_id( | |
2831 | ere->afi, ere->safi, ere->re->vrf_id, ere->re->table); | |
2832 | if (!table) { | |
2833 | early_route_memory_free(ere); | |
2834 | return; | |
2835 | } | |
2836 | ||
2837 | /* Apply mask. */ | |
2838 | apply_mask(&ere->p); | |
2839 | if (ere->src_p_provided) | |
2840 | apply_mask_ipv6(&ere->src_p); | |
2841 | ||
2842 | /* Lookup route node. */ | |
2843 | rn = srcdest_rnode_lookup(table, &ere->p, | |
2844 | ere->src_p_provided ? &ere->src_p : NULL); | |
2845 | if (!rn) { | |
2846 | if (IS_ZEBRA_DEBUG_RIB) { | |
2847 | char src_buf[PREFIX_STRLEN]; | |
2848 | struct vrf *vrf = vrf_lookup_by_id(ere->re->vrf_id); | |
2849 | ||
2850 | if (ere->src_p_provided && ere->src_p.prefixlen) | |
2851 | prefix2str(&ere->src_p, src_buf, | |
2852 | sizeof(src_buf)); | |
2853 | else | |
2854 | src_buf[0] = '\0'; | |
2855 | ||
2856 | zlog_debug("%s[%d]:%pRN%s%s doesn't exist in rib", | |
2857 | vrf->name, ere->re->table, rn, | |
2858 | (src_buf[0] != '\0') ? " from " : "", | |
2859 | src_buf); | |
2860 | } | |
2861 | early_route_memory_free(ere); | |
2862 | return; | |
2863 | } | |
2864 | ||
2865 | dest = rib_dest_from_rnode(rn); | |
2866 | fib = dest->selected_fib; | |
2867 | ||
2868 | struct nexthop *nh = NULL; | |
2869 | ||
2870 | if (ere->re->nhe) | |
2871 | nh = ere->re->nhe->nhg.nexthop; | |
2872 | ||
2873 | /* Lookup same type route. */ | |
2874 | RNODE_FOREACH_RE (rn, re) { | |
2875 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2876 | continue; | |
2877 | ||
2878 | if (re->type != ere->re->type) | |
2879 | continue; | |
2880 | if (re->instance != ere->re->instance) | |
2881 | continue; | |
2882 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && | |
2883 | ere->re->distance != re->distance) | |
2884 | continue; | |
2885 | ||
2886 | if (re->type == ZEBRA_ROUTE_KERNEL && | |
2887 | re->metric != ere->re->metric) | |
2888 | continue; | |
2889 | if (re->type == ZEBRA_ROUTE_CONNECT && (rtnh = nh) && | |
2890 | rtnh->type == NEXTHOP_TYPE_IFINDEX && nh) { | |
2891 | if (rtnh->ifindex != nh->ifindex) | |
2892 | continue; | |
2893 | same = re; | |
2894 | break; | |
2895 | } | |
2896 | ||
2897 | /* Make sure that the route found has the same gateway. */ | |
2898 | if (ere->re->nhe_id && re->nhe_id == ere->re->nhe_id) { | |
2899 | same = re; | |
2900 | break; | |
2901 | } | |
2902 | ||
2903 | if (nh == NULL) { | |
2904 | same = re; | |
2905 | break; | |
2906 | } | |
2907 | for (ALL_NEXTHOPS(re->nhe->nhg, rtnh)) { | |
2908 | /* | |
2909 | * No guarantee all kernel send nh with labels | |
2910 | * on delete. | |
2911 | */ | |
2912 | if (nexthop_same_no_labels(rtnh, nh)) { | |
2913 | same = re; | |
2914 | break; | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | if (same) | |
2919 | break; | |
2920 | } | |
2921 | /* | |
2922 | * If same type of route can't be found and this message is from | |
2923 | * kernel. | |
2924 | */ | |
2925 | if (!same) { | |
2926 | /* | |
2927 | * In the past(HA!) we could get here because | |
2928 | * we were receiving a route delete from the | |
2929 | * kernel and we're not marking the proto | |
2930 | * as coming from it's appropriate originator. | |
2931 | * Now that we are properly noticing the fact | |
2932 | * that the kernel has deleted our route we | |
2933 | * are not going to get called in this path | |
2934 | * I am going to leave this here because | |
2935 | * this might still work this way on non-linux | |
2936 | * platforms as well as some weird state I have | |
2937 | * not properly thought of yet. | |
2938 | * If we can show that this code path is | |
2939 | * dead then we can remove it. | |
2940 | */ | |
2941 | if (fib && CHECK_FLAG(ere->re->flags, ZEBRA_FLAG_SELFROUTE)) { | |
2942 | if (IS_ZEBRA_DEBUG_RIB) { | |
2943 | rnode_debug( | |
2944 | rn, ere->re->vrf_id, | |
2945 | "rn %p, re %p (%s) was deleted from kernel, adding", | |
2946 | rn, fib, zebra_route_string(fib->type)); | |
2947 | } | |
2948 | if (zrouter.allow_delete || | |
2949 | CHECK_FLAG(dest->flags, RIB_ROUTE_ANY_QUEUED)) { | |
2950 | UNSET_FLAG(fib->status, ROUTE_ENTRY_INSTALLED); | |
2951 | /* Unset flags. */ | |
2952 | for (rtnh = fib->nhe->nhg.nexthop; rtnh; | |
2953 | rtnh = rtnh->next) | |
2954 | UNSET_FLAG(rtnh->flags, | |
2955 | NEXTHOP_FLAG_FIB); | |
2956 | ||
2957 | /* | |
2958 | * This is a non FRR route | |
2959 | * as such we should mark | |
2960 | * it as deleted | |
2961 | */ | |
2962 | dest->selected_fib = NULL; | |
2963 | } else { | |
2964 | /* | |
2965 | * This means someone else, other than Zebra, | |
2966 | * has deleted a Zebra router from the kernel. | |
2967 | * We will add it back | |
2968 | */ | |
2969 | rib_install_kernel(rn, fib, NULL); | |
2970 | } | |
2971 | } else { | |
2972 | if (IS_ZEBRA_DEBUG_RIB) { | |
2973 | if (nh) | |
2974 | rnode_debug( | |
2975 | rn, ere->re->vrf_id, | |
2976 | "via %s ifindex %d type %d doesn't exist in rib", | |
2977 | inet_ntop(afi2family(ere->afi), | |
2978 | &nh->gate, buf2, | |
2979 | sizeof(buf2)), | |
2980 | nh->ifindex, ere->re->type); | |
2981 | else | |
2982 | rnode_debug( | |
2983 | rn, ere->re->vrf_id, | |
2984 | "type %d doesn't exist in rib", | |
2985 | ere->re->type); | |
2986 | } | |
2987 | route_unlock_node(rn); | |
2988 | early_route_memory_free(ere); | |
2989 | return; | |
2990 | } | |
2991 | } | |
2992 | ||
2993 | if (same) { | |
2994 | struct nexthop *tmp_nh; | |
2995 | ||
2996 | if (ere->fromkernel && | |
2997 | CHECK_FLAG(ere->re->flags, ZEBRA_FLAG_SELFROUTE) && | |
2998 | !zrouter.allow_delete) { | |
2999 | rib_install_kernel(rn, same, NULL); | |
3000 | route_unlock_node(rn); | |
3001 | ||
3002 | early_route_memory_free(ere); | |
3003 | return; | |
3004 | } | |
3005 | ||
3006 | /* Special handling for IPv4 or IPv6 routes sourced from | |
3007 | * EVPN - the nexthop (and associated MAC) need to be | |
3008 | * uninstalled if no more refs. | |
3009 | */ | |
3010 | for (ALL_NEXTHOPS(re->nhe->nhg, tmp_nh)) { | |
3011 | struct ipaddr vtep_ip; | |
3012 | ||
3013 | if (CHECK_FLAG(tmp_nh->flags, NEXTHOP_FLAG_EVPN)) { | |
3014 | memset(&vtep_ip, 0, sizeof(struct ipaddr)); | |
3015 | if (ere->afi == AFI_IP) { | |
3016 | vtep_ip.ipa_type = IPADDR_V4; | |
3017 | memcpy(&(vtep_ip.ipaddr_v4), | |
3018 | &(tmp_nh->gate.ipv4), | |
3019 | sizeof(struct in_addr)); | |
3020 | } else { | |
3021 | vtep_ip.ipa_type = IPADDR_V6; | |
3022 | memcpy(&(vtep_ip.ipaddr_v6), | |
3023 | &(tmp_nh->gate.ipv6), | |
3024 | sizeof(struct in6_addr)); | |
3025 | } | |
3026 | zebra_rib_queue_evpn_route_del( | |
3027 | re->vrf_id, &vtep_ip, &ere->p); | |
3028 | } | |
3029 | } | |
3030 | ||
3031 | /* Notify dplane if system route changes */ | |
3032 | if (RIB_SYSTEM_ROUTE(re)) | |
3033 | dplane_sys_route_del(rn, same); | |
3034 | ||
3035 | rib_delnode(rn, same); | |
3036 | } | |
3037 | ||
3038 | route_unlock_node(rn); | |
3039 | ||
3040 | early_route_memory_free(ere); | |
3041 | } | |
3042 | ||
3043 | /* | |
3044 | * When FRR receives a route we need to match the route up to | |
3045 | * nexthop groups. That we also may have just received | |
3046 | * place the data on this queue so that this work of finding | |
3047 | * the nexthop group entries for the route entry is always | |
3048 | * done after the nexthop group has had a chance to be processed | |
3049 | */ | |
3050 | static void process_subq_early_route(struct listnode *lnode) | |
3051 | { | |
3052 | struct zebra_early_route *ere = listgetdata(lnode); | |
3053 | ||
3054 | if (ere->deletion) | |
3055 | process_subq_early_route_delete(ere); | |
3056 | else | |
3057 | process_subq_early_route_add(ere); | |
3058 | } | |
3059 | ||
3060 | /* | |
3061 | * Examine the specified subqueue; process one entry and return 1 if | |
3062 | * there is a node, return 0 otherwise. | |
3063 | */ | |
3064 | static unsigned int process_subq(struct list *subq, | |
3065 | enum meta_queue_indexes qindex) | |
3066 | { | |
3067 | struct listnode *lnode = listhead(subq); | |
3068 | ||
3069 | if (!lnode) | |
3070 | return 0; | |
3071 | ||
3072 | switch (qindex) { | |
3073 | case META_QUEUE_EVPN: | |
3074 | process_subq_evpn(lnode); | |
3075 | break; | |
3076 | case META_QUEUE_NHG: | |
3077 | process_subq_nhg(lnode); | |
3078 | break; | |
3079 | case META_QUEUE_EARLY_ROUTE: | |
3080 | process_subq_early_route(lnode); | |
3081 | break; | |
3082 | case META_QUEUE_EARLY_LABEL: | |
3083 | process_subq_early_label(lnode); | |
3084 | break; | |
3085 | case META_QUEUE_CONNECTED: | |
3086 | case META_QUEUE_KERNEL: | |
3087 | case META_QUEUE_STATIC: | |
3088 | case META_QUEUE_NOTBGP: | |
3089 | case META_QUEUE_BGP: | |
3090 | case META_QUEUE_OTHER: | |
3091 | process_subq_route(lnode, qindex); | |
3092 | break; | |
3093 | } | |
3094 | ||
3095 | list_delete_node(subq, lnode); | |
3096 | ||
3097 | return 1; | |
3098 | } | |
3099 | ||
3100 | /* Dispatch the meta queue by picking and processing the next node from | |
3101 | * a non-empty sub-queue with lowest priority. wq is equal to zebra->ribq and | |
3102 | * data is pointed to the meta queue structure. | |
3103 | */ | |
3104 | static wq_item_status meta_queue_process(struct work_queue *dummy, void *data) | |
3105 | { | |
3106 | struct meta_queue *mq = data; | |
3107 | unsigned i; | |
3108 | uint32_t queue_len, queue_limit; | |
3109 | ||
3110 | /* Ensure there's room for more dataplane updates */ | |
3111 | queue_limit = dplane_get_in_queue_limit(); | |
3112 | queue_len = dplane_get_in_queue_len(); | |
3113 | if (queue_len > queue_limit) { | |
3114 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3115 | zlog_debug( | |
3116 | "rib queue: dplane queue len %u, limit %u, retrying", | |
3117 | queue_len, queue_limit); | |
3118 | ||
3119 | /* Ensure that the meta-queue is actually enqueued */ | |
3120 | if (work_queue_empty(zrouter.ribq)) | |
3121 | work_queue_add(zrouter.ribq, zrouter.mq); | |
3122 | ||
3123 | return WQ_QUEUE_BLOCKED; | |
3124 | } | |
3125 | ||
3126 | for (i = 0; i < MQ_SIZE; i++) | |
3127 | if (process_subq(mq->subq[i], i)) { | |
3128 | mq->size--; | |
3129 | break; | |
3130 | } | |
3131 | return mq->size ? WQ_REQUEUE : WQ_SUCCESS; | |
3132 | } | |
3133 | ||
3134 | ||
3135 | /* | |
3136 | * Look into the RN and queue it into the highest priority queue | |
3137 | * at this point in time for processing. | |
3138 | * | |
3139 | * We will enqueue a route node only once per invocation. | |
3140 | * | |
3141 | * There are two possibilities here that should be kept in mind. | |
3142 | * If the original invocation has not been pulled off for processing | |
3143 | * yet, A subsuquent invocation can have a route entry with a better | |
3144 | * meta queue index value and we can have a situation where | |
3145 | * we might have the same node enqueued 2 times. Not necessarily | |
3146 | * an optimal situation but it should be ok. | |
3147 | * | |
3148 | * The other possibility is that the original invocation has not | |
3149 | * been pulled off for processing yet, A subsusquent invocation | |
3150 | * doesn't have a route_entry with a better meta-queue and the | |
3151 | * original metaqueue index value will win and we'll end up with | |
3152 | * the route node enqueued once. | |
3153 | */ | |
3154 | static int rib_meta_queue_add(struct meta_queue *mq, void *data) | |
3155 | { | |
3156 | struct route_node *rn = NULL; | |
3157 | struct route_entry *re = NULL, *curr_re = NULL; | |
3158 | uint8_t qindex = MQ_SIZE, curr_qindex = MQ_SIZE; | |
3159 | ||
3160 | rn = (struct route_node *)data; | |
3161 | ||
3162 | RNODE_FOREACH_RE (rn, curr_re) { | |
3163 | curr_qindex = route_info[curr_re->type].meta_q_map; | |
3164 | ||
3165 | if (curr_qindex <= qindex) { | |
3166 | re = curr_re; | |
3167 | qindex = curr_qindex; | |
3168 | } | |
3169 | } | |
3170 | ||
3171 | if (!re) | |
3172 | return -1; | |
3173 | ||
3174 | /* Invariant: at this point we always have rn->info set. */ | |
3175 | if (CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
3176 | RIB_ROUTE_QUEUED(qindex))) { | |
3177 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3178 | rnode_debug(rn, re->vrf_id, | |
3179 | "rn %p is already queued in sub-queue %s", | |
3180 | (void *)rn, subqueue2str(qindex)); | |
3181 | return -1; | |
3182 | } | |
3183 | ||
3184 | SET_FLAG(rib_dest_from_rnode(rn)->flags, RIB_ROUTE_QUEUED(qindex)); | |
3185 | listnode_add(mq->subq[qindex], rn); | |
3186 | route_lock_node(rn); | |
3187 | mq->size++; | |
3188 | ||
3189 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3190 | rnode_debug(rn, re->vrf_id, "queued rn %p into sub-queue %s", | |
3191 | (void *)rn, subqueue2str(qindex)); | |
3192 | ||
3193 | return 0; | |
3194 | } | |
3195 | ||
3196 | static int early_label_meta_queue_add(struct meta_queue *mq, void *data) | |
3197 | { | |
3198 | listnode_add(mq->subq[META_QUEUE_EARLY_LABEL], data); | |
3199 | mq->size++; | |
3200 | return 0; | |
3201 | } | |
3202 | ||
3203 | static int rib_meta_queue_nhg_ctx_add(struct meta_queue *mq, void *data) | |
3204 | { | |
3205 | struct nhg_ctx *ctx = NULL; | |
3206 | uint8_t qindex = META_QUEUE_NHG; | |
3207 | struct wq_nhg_wrapper *w; | |
3208 | ||
3209 | ctx = (struct nhg_ctx *)data; | |
3210 | ||
3211 | if (!ctx) | |
3212 | return -1; | |
3213 | ||
3214 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); | |
3215 | ||
3216 | w->type = WQ_NHG_WRAPPER_TYPE_CTX; | |
3217 | w->u.ctx = ctx; | |
3218 | ||
3219 | listnode_add(mq->subq[qindex], w); | |
3220 | mq->size++; | |
3221 | ||
3222 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3223 | zlog_debug("NHG Context id=%u queued into sub-queue %s", | |
3224 | ctx->id, subqueue2str(qindex)); | |
3225 | ||
3226 | return 0; | |
3227 | } | |
3228 | ||
3229 | static int rib_meta_queue_nhg_add(struct meta_queue *mq, void *data) | |
3230 | { | |
3231 | struct nhg_hash_entry *nhe = NULL; | |
3232 | uint8_t qindex = META_QUEUE_NHG; | |
3233 | struct wq_nhg_wrapper *w; | |
3234 | ||
3235 | nhe = (struct nhg_hash_entry *)data; | |
04bec7b2 MS |
3236 | |
3237 | if (!nhe) | |
3238 | return -1; | |
3239 | ||
32367e7a | 3240 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); |
04bec7b2 MS |
3241 | |
3242 | w->type = WQ_NHG_WRAPPER_TYPE_NHG; | |
3243 | w->u.nhe = nhe; | |
3244 | ||
3245 | listnode_add(mq->subq[qindex], w); | |
3246 | mq->size++; | |
3247 | ||
3248 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
7a96ccc7 DS |
3249 | zlog_debug("NHG id=%u queued into sub-queue %s", nhe->id, |
3250 | subqueue2str(qindex)); | |
04bec7b2 MS |
3251 | |
3252 | return 0; | |
3253 | } | |
3254 | ||
32367e7a MS |
3255 | static int rib_meta_queue_evpn_add(struct meta_queue *mq, void *data) |
3256 | { | |
3257 | listnode_add(mq->subq[META_QUEUE_EVPN], data); | |
3258 | mq->size++; | |
3259 | ||
3260 | return 0; | |
3261 | } | |
3262 | ||
e22e8001 SW |
3263 | static int mq_add_handler(void *data, |
3264 | int (*mq_add_func)(struct meta_queue *mq, void *data)) | |
3265 | { | |
489a9614 | 3266 | if (zrouter.ribq == NULL) { |
e914ccbe | 3267 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3268 | "%s: work_queue does not exist!", __func__); |
e22e8001 | 3269 | return -1; |
d62a17ae | 3270 | } |
3271 | ||
3272 | /* | |
3273 | * The RIB queue should normally be either empty or holding the only | |
3274 | * work_queue_item element. In the latter case this element would | |
3275 | * hold a pointer to the meta queue structure, which must be used to | |
3276 | * actually queue the route nodes to process. So create the MQ | |
3277 | * holder, if necessary, then push the work into it in any case. | |
3278 | * This semantics was introduced after 0.99.9 release. | |
3279 | */ | |
489a9614 | 3280 | if (work_queue_empty(zrouter.ribq)) |
ea45a4e7 | 3281 | work_queue_add(zrouter.ribq, zrouter.mq); |
e96f9203 | 3282 | |
e22e8001 SW |
3283 | return mq_add_func(zrouter.mq, data); |
3284 | } | |
fc328ac9 | 3285 | |
53216dff DS |
3286 | void mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3287 | struct prefix *prefix, uint8_t route_type, | |
3288 | uint8_t route_instance) | |
3289 | { | |
3290 | struct wq_label_wrapper *w; | |
3291 | ||
3292 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_label_wrapper)); | |
3293 | ||
3294 | w->type = WQ_LABEL_FTN_UNINSTALL; | |
3295 | w->vrf_id = zvrf->vrf->vrf_id; | |
3296 | w->p = *prefix; | |
3297 | w->ltype = type; | |
3298 | w->route_type = route_type; | |
3299 | w->route_instance = route_instance; | |
3300 | ||
3301 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3302 | zlog_debug("Early Label Handling for %pFX", prefix); | |
3303 | ||
3304 | mq_add_handler(w, early_label_meta_queue_add); | |
3305 | } | |
3306 | ||
3307 | void mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, | |
3308 | const struct zapi_labels *zl) | |
3309 | { | |
3310 | struct wq_label_wrapper *w; | |
3311 | ||
3312 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_label_wrapper)); | |
3313 | w->type = WQ_LABEL_LABELS_PROCESS; | |
3314 | w->vrf_id = zvrf->vrf->vrf_id; | |
3315 | w->add_p = add_p; | |
3316 | w->zl = *zl; | |
3317 | ||
3318 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3319 | zlog_debug("Early Label Handling: Labels Process"); | |
3320 | ||
3321 | mq_add_handler(w, early_label_meta_queue_add); | |
3322 | } | |
3323 | ||
e22e8001 SW |
3324 | /* Add route_node to work queue and schedule processing */ |
3325 | int rib_queue_add(struct route_node *rn) | |
3326 | { | |
3327 | assert(rn); | |
3328 | ||
3329 | /* Pointless to queue a route_node with no RIB entries to add or remove | |
3330 | */ | |
3331 | if (!rnode_to_ribs(rn)) { | |
c10e14e9 DS |
3332 | zlog_debug("%s: called for route_node (%p, %u) with no ribs", |
3333 | __func__, (void *)rn, route_node_get_lock_count(rn)); | |
e22e8001 SW |
3334 | zlog_backtrace(LOG_DEBUG); |
3335 | return -1; | |
3336 | } | |
3337 | ||
04bec7b2 | 3338 | return mq_add_handler(rn, rib_meta_queue_add); |
e22e8001 SW |
3339 | } |
3340 | ||
04bec7b2 MS |
3341 | /* |
3342 | * Enqueue incoming nhg info from OS for processing | |
3343 | */ | |
3344 | int rib_queue_nhg_ctx_add(struct nhg_ctx *ctx) | |
e22e8001 SW |
3345 | { |
3346 | assert(ctx); | |
3347 | ||
04bec7b2 MS |
3348 | return mq_add_handler(ctx, rib_meta_queue_nhg_ctx_add); |
3349 | } | |
3350 | ||
3351 | /* | |
3352 | * Enqueue incoming nhg from proto daemon for processing | |
3353 | */ | |
3354 | int rib_queue_nhe_add(struct nhg_hash_entry *nhe) | |
3355 | { | |
3356 | if (nhe == NULL) | |
3357 | return -1; | |
3358 | ||
3359 | return mq_add_handler(nhe, rib_meta_queue_nhg_add); | |
3360 | } | |
3361 | ||
32367e7a MS |
3362 | /* |
3363 | * Enqueue evpn route for processing | |
3364 | */ | |
3365 | int zebra_rib_queue_evpn_route_add(vrf_id_t vrf_id, const struct ethaddr *rmac, | |
3366 | const struct ipaddr *vtep_ip, | |
3367 | const struct prefix *host_prefix) | |
3368 | { | |
3369 | struct wq_evpn_wrapper *w; | |
3370 | ||
3371 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3372 | ||
3373 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
3374 | w->add_p = true; | |
3375 | w->vrf_id = vrf_id; | |
7f7e49d1 | 3376 | w->macaddr = *rmac; |
32367e7a MS |
3377 | w->ip = *vtep_ip; |
3378 | w->prefix = *host_prefix; | |
3379 | ||
3380 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3381 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
3382 | vrf_id, vtep_ip, host_prefix); | |
3383 | ||
3384 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3385 | } | |
3386 | ||
3387 | int zebra_rib_queue_evpn_route_del(vrf_id_t vrf_id, | |
3388 | const struct ipaddr *vtep_ip, | |
3389 | const struct prefix *host_prefix) | |
3390 | { | |
3391 | struct wq_evpn_wrapper *w; | |
3392 | ||
3393 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3394 | ||
3395 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
3396 | w->add_p = false; | |
3397 | w->vrf_id = vrf_id; | |
3398 | w->ip = *vtep_ip; | |
3399 | w->prefix = *host_prefix; | |
3400 | ||
3401 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3402 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
3403 | vrf_id, vtep_ip, host_prefix); | |
3404 | ||
3405 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3406 | } | |
3407 | ||
3408 | /* Enqueue EVPN remote ES for processing */ | |
3409 | int zebra_rib_queue_evpn_rem_es_add(const esi_t *esi, | |
3410 | const struct in_addr *vtep_ip, | |
3411 | bool esr_rxed, uint8_t df_alg, | |
3412 | uint16_t df_pref) | |
3413 | { | |
3414 | struct wq_evpn_wrapper *w; | |
3415 | char buf[ESI_STR_LEN]; | |
3416 | ||
3417 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3418 | ||
3419 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
3420 | w->add_p = true; | |
3421 | w->esi = *esi; | |
3422 | w->ip.ipa_type = IPADDR_V4; | |
3423 | w->ip.ipaddr_v4 = *vtep_ip; | |
3424 | w->esr_rxed = esr_rxed; | |
3425 | w->df_alg = df_alg; | |
3426 | w->df_pref = df_pref; | |
3427 | ||
3428 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3429 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
3430 | esi_to_str(esi, buf, sizeof(buf))); | |
3431 | ||
3432 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3433 | } | |
3434 | ||
3435 | int zebra_rib_queue_evpn_rem_es_del(const esi_t *esi, | |
3436 | const struct in_addr *vtep_ip) | |
3437 | { | |
3438 | struct wq_evpn_wrapper *w; | |
3439 | char buf[ESI_STR_LEN]; | |
3440 | ||
3441 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3442 | ||
3443 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
3444 | w->add_p = false; | |
3445 | w->esi = *esi; | |
3446 | w->ip.ipa_type = IPADDR_V4; | |
3447 | w->ip.ipaddr_v4 = *vtep_ip; | |
3448 | ||
3449 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
3450 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
3451 | esi_to_str(esi, buf, sizeof(buf)); | |
3452 | else | |
3453 | strlcpy(buf, "-", sizeof(buf)); | |
3454 | ||
3455 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
3456 | buf); | |
3457 | } | |
3458 | ||
3459 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3460 | } | |
3461 | ||
7f7e49d1 MS |
3462 | /* |
3463 | * Enqueue EVPN remote macip update for processing | |
3464 | */ | |
3465 | int zebra_rib_queue_evpn_rem_macip_add(vni_t vni, const struct ethaddr *macaddr, | |
3466 | const struct ipaddr *ipaddr, | |
3467 | uint8_t flags, uint32_t seq, | |
3468 | struct in_addr vtep_ip, const esi_t *esi) | |
3469 | { | |
3470 | struct wq_evpn_wrapper *w; | |
3471 | char buf[ESI_STR_LEN]; | |
3472 | ||
3473 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3474 | ||
3475 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
3476 | w->add_p = true; | |
3477 | w->vni = vni; | |
3478 | w->macaddr = *macaddr; | |
3479 | w->ip = *ipaddr; | |
3480 | w->flags = flags; | |
3481 | w->seq = seq; | |
3482 | w->vtep_ip = vtep_ip; | |
3483 | w->esi = *esi; | |
3484 | ||
3485 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
3486 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
3487 | esi_to_str(esi, buf, sizeof(buf)); | |
3488 | else | |
3489 | strlcpy(buf, "-", sizeof(buf)); | |
3490 | ||
3491 | zlog_debug("%s: mac %pEA, vtep %pI4, esi %s enqueued", __func__, | |
3492 | macaddr, &vtep_ip, buf); | |
3493 | } | |
3494 | ||
3495 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3496 | } | |
3497 | ||
3498 | int zebra_rib_queue_evpn_rem_macip_del(vni_t vni, const struct ethaddr *macaddr, | |
3499 | const struct ipaddr *ip, | |
3500 | struct in_addr vtep_ip) | |
3501 | { | |
3502 | struct wq_evpn_wrapper *w; | |
3503 | ||
3504 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3505 | ||
3506 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
3507 | w->add_p = false; | |
3508 | w->vni = vni; | |
3509 | w->macaddr = *macaddr; | |
3510 | w->ip = *ip; | |
3511 | w->vtep_ip = vtep_ip; | |
3512 | ||
3513 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3514 | zlog_debug("%s: mac %pEA, vtep %pI4 enqueued", __func__, | |
3515 | macaddr, &vtep_ip); | |
3516 | ||
3517 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3518 | } | |
3519 | ||
7e5b0b2b MS |
3520 | /* |
3521 | * Enqueue remote VTEP address for processing | |
3522 | */ | |
3523 | int zebra_rib_queue_evpn_rem_vtep_add(vrf_id_t vrf_id, vni_t vni, | |
3524 | struct in_addr vtep_ip, int flood_control) | |
3525 | { | |
3526 | struct wq_evpn_wrapper *w; | |
3527 | ||
3528 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3529 | ||
3530 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
3531 | w->add_p = true; | |
3532 | w->vrf_id = vrf_id; | |
3533 | w->vni = vni; | |
3534 | w->vtep_ip = vtep_ip; | |
3535 | w->flags = flood_control; | |
3536 | ||
3537 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3538 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
3539 | &vtep_ip); | |
3540 | ||
3541 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3542 | } | |
3543 | ||
3544 | int zebra_rib_queue_evpn_rem_vtep_del(vrf_id_t vrf_id, vni_t vni, | |
3545 | struct in_addr vtep_ip) | |
3546 | { | |
3547 | struct wq_evpn_wrapper *w; | |
3548 | ||
3549 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3550 | ||
3551 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
3552 | w->add_p = false; | |
3553 | w->vrf_id = vrf_id; | |
3554 | w->vni = vni; | |
3555 | w->vtep_ip = vtep_ip; | |
3556 | ||
3557 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3558 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
3559 | &vtep_ip); | |
3560 | ||
3561 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3562 | } | |
3563 | ||
a310ebc1 DS |
3564 | /* Create new meta queue. |
3565 | A destructor function doesn't seem to be necessary here. | |
3566 | */ | |
3567 | static struct meta_queue *meta_queue_new(void) | |
3568 | { | |
3569 | struct meta_queue *new; | |
3570 | unsigned i; | |
3571 | ||
3572 | new = XCALLOC(MTYPE_WORK_QUEUE, sizeof(struct meta_queue)); | |
3573 | ||
3574 | for (i = 0; i < MQ_SIZE; i++) { | |
3575 | new->subq[i] = list_new(); | |
3576 | assert(new->subq[i]); | |
3577 | } | |
3578 | ||
3579 | return new; | |
3580 | } | |
3581 | ||
32367e7a | 3582 | /* Clean up the EVPN meta-queue list */ |
a310ebc1 DS |
3583 | static void evpn_meta_queue_free(struct meta_queue *mq, struct list *l, |
3584 | struct zebra_vrf *zvrf) | |
32367e7a | 3585 | { |
a310ebc1 | 3586 | struct listnode *node, *nnode; |
32367e7a MS |
3587 | struct wq_evpn_wrapper *w; |
3588 | ||
3589 | /* Free the node wrapper object, and the struct it wraps */ | |
a310ebc1 DS |
3590 | for (ALL_LIST_ELEMENTS(l, node, nnode, w)) { |
3591 | if (zvrf) { | |
3592 | vrf_id_t vrf_id = zvrf->vrf->vrf_id; | |
3593 | ||
3594 | if (w->vrf_id != vrf_id) | |
3595 | continue; | |
3596 | } | |
3597 | ||
32367e7a MS |
3598 | node->data = NULL; |
3599 | ||
3600 | XFREE(MTYPE_WQ_WRAPPER, w); | |
3601 | ||
3602 | list_delete_node(l, node); | |
a310ebc1 | 3603 | mq->size--; |
32367e7a MS |
3604 | } |
3605 | } | |
3606 | ||
04bec7b2 | 3607 | /* Clean up the nhg meta-queue list */ |
a310ebc1 DS |
3608 | static void nhg_meta_queue_free(struct meta_queue *mq, struct list *l, |
3609 | struct zebra_vrf *zvrf) | |
04bec7b2 MS |
3610 | { |
3611 | struct wq_nhg_wrapper *w; | |
a310ebc1 | 3612 | struct listnode *node, *nnode; |
04bec7b2 MS |
3613 | |
3614 | /* Free the node wrapper object, and the struct it wraps */ | |
a310ebc1 DS |
3615 | for (ALL_LIST_ELEMENTS(l, node, nnode, w)) { |
3616 | if (zvrf) { | |
3617 | vrf_id_t vrf_id = zvrf->vrf->vrf_id; | |
04bec7b2 | 3618 | |
a310ebc1 DS |
3619 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX && |
3620 | w->u.ctx->vrf_id != vrf_id) | |
3621 | continue; | |
3622 | else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG && | |
3623 | w->u.nhe->vrf_id != vrf_id) | |
3624 | continue; | |
3625 | } | |
04bec7b2 MS |
3626 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) |
3627 | nhg_ctx_free(&w->u.ctx); | |
3628 | else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) | |
3629 | zebra_nhg_free(w->u.nhe); | |
3630 | ||
a310ebc1 | 3631 | node->data = NULL; |
32367e7a | 3632 | XFREE(MTYPE_WQ_WRAPPER, w); |
04bec7b2 MS |
3633 | |
3634 | list_delete_node(l, node); | |
a310ebc1 | 3635 | mq->size--; |
04bec7b2 | 3636 | } |
4d38fdb4 | 3637 | } |
3638 | ||
53216dff DS |
3639 | static void early_label_meta_queue_free(struct meta_queue *mq, struct list *l, |
3640 | struct zebra_vrf *zvrf) | |
3641 | { | |
3642 | struct wq_label_wrapper *w; | |
3643 | struct listnode *node, *nnode; | |
3644 | ||
3645 | for (ALL_LIST_ELEMENTS(l, node, nnode, w)) { | |
3646 | if (zvrf && zvrf->vrf->vrf_id != w->vrf_id) | |
3647 | continue; | |
3648 | ||
3649 | switch (w->type) { | |
3650 | case WQ_LABEL_FTN_UNINSTALL: | |
3651 | case WQ_LABEL_LABELS_PROCESS: | |
3652 | break; | |
3653 | } | |
3654 | ||
3655 | node->data = NULL; | |
3656 | XFREE(MTYPE_WQ_WRAPPER, w); | |
3657 | list_delete_node(l, node); | |
3658 | mq->size--; | |
3659 | } | |
3660 | } | |
3661 | ||
a310ebc1 DS |
3662 | static void rib_meta_queue_free(struct meta_queue *mq, struct list *l, |
3663 | struct zebra_vrf *zvrf) | |
e96f9203 | 3664 | { |
a310ebc1 DS |
3665 | struct route_node *rnode; |
3666 | struct listnode *node, *nnode; | |
5110a0c6 | 3667 | |
a310ebc1 DS |
3668 | for (ALL_LIST_ELEMENTS(l, node, nnode, rnode)) { |
3669 | rib_dest_t *dest = rib_dest_from_rnode(rnode); | |
e96f9203 | 3670 | |
a310ebc1 DS |
3671 | if (dest && rib_dest_vrf(dest) != zvrf) |
3672 | continue; | |
5110a0c6 | 3673 | |
a310ebc1 DS |
3674 | route_unlock_node(rnode); |
3675 | node->data = NULL; | |
3676 | list_delete_node(l, node); | |
3677 | mq->size--; | |
3678 | } | |
e96f9203 DO |
3679 | } |
3680 | ||
d7ac4c4d DS |
3681 | static void early_route_meta_queue_free(struct meta_queue *mq, struct list *l, |
3682 | struct zebra_vrf *zvrf) | |
3683 | { | |
3684 | struct zebra_early_route *zer; | |
3685 | struct listnode *node, *nnode; | |
3686 | ||
3687 | for (ALL_LIST_ELEMENTS(l, node, nnode, zer)) { | |
3688 | if (zvrf && zer->re->vrf_id != zvrf->vrf->vrf_id) | |
3689 | continue; | |
3690 | ||
3691 | XFREE(MTYPE_RE, zer); | |
3692 | node->data = NULL; | |
3693 | list_delete_node(l, node); | |
3694 | mq->size--; | |
3695 | } | |
3696 | } | |
a310ebc1 DS |
3697 | |
3698 | void meta_queue_free(struct meta_queue *mq, struct zebra_vrf *zvrf) | |
5a8dfcd8 | 3699 | { |
014e732d | 3700 | enum meta_queue_indexes i; |
5a8dfcd8 | 3701 | |
04bec7b2 MS |
3702 | for (i = 0; i < MQ_SIZE; i++) { |
3703 | /* Some subqueues may need cleanup - nhgs for example */ | |
014e732d DS |
3704 | switch (i) { |
3705 | case META_QUEUE_NHG: | |
a310ebc1 | 3706 | nhg_meta_queue_free(mq, mq->subq[i], zvrf); |
014e732d DS |
3707 | break; |
3708 | case META_QUEUE_EVPN: | |
a310ebc1 | 3709 | evpn_meta_queue_free(mq, mq->subq[i], zvrf); |
014e732d | 3710 | break; |
d7ac4c4d DS |
3711 | case META_QUEUE_EARLY_ROUTE: |
3712 | early_route_meta_queue_free(mq, mq->subq[i], zvrf); | |
3713 | break; | |
53216dff DS |
3714 | case META_QUEUE_EARLY_LABEL: |
3715 | early_label_meta_queue_free(mq, mq->subq[i], zvrf); | |
3716 | break; | |
014e732d DS |
3717 | case META_QUEUE_CONNECTED: |
3718 | case META_QUEUE_KERNEL: | |
3719 | case META_QUEUE_STATIC: | |
3720 | case META_QUEUE_NOTBGP: | |
3721 | case META_QUEUE_BGP: | |
3722 | case META_QUEUE_OTHER: | |
a310ebc1 | 3723 | rib_meta_queue_free(mq, mq->subq[i], zvrf); |
014e732d DS |
3724 | break; |
3725 | } | |
a310ebc1 DS |
3726 | if (!zvrf) |
3727 | list_delete(&mq->subq[i]); | |
04bec7b2 | 3728 | } |
5a8dfcd8 | 3729 | |
a310ebc1 DS |
3730 | if (!zvrf) |
3731 | XFREE(MTYPE_WORK_QUEUE, mq); | |
0ef6eacc IR |
3732 | } |
3733 | ||
4d38fdb4 | 3734 | /* initialise zebra rib work queue */ |
2561d12e | 3735 | static void rib_queue_init(void) |
4d38fdb4 | 3736 | { |
489a9614 DS |
3737 | if (!(zrouter.ribq = work_queue_new(zrouter.master, |
3738 | "route_node processing"))) { | |
e914ccbe | 3739 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3740 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 3741 | return; |
3742 | } | |
4d38fdb4 | 3743 | |
d62a17ae | 3744 | /* fill in the work queue spec */ |
489a9614 | 3745 | zrouter.ribq->spec.workfunc = &meta_queue_process; |
46a4e345 | 3746 | zrouter.ribq->spec.completion_func = NULL; |
d62a17ae | 3747 | /* XXX: TODO: These should be runtime configurable via vty */ |
489a9614 DS |
3748 | zrouter.ribq->spec.max_retries = 3; |
3749 | zrouter.ribq->spec.hold = ZEBRA_RIB_PROCESS_HOLD_TIME; | |
3750 | zrouter.ribq->spec.retry = ZEBRA_RIB_PROCESS_RETRY_TIME; | |
d62a17ae | 3751 | |
ea45a4e7 | 3752 | if (!(zrouter.mq = meta_queue_new())) { |
e914ccbe | 3753 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3754 | "%s: could not initialise meta queue!", __func__); |
d62a17ae | 3755 | return; |
3756 | } | |
3757 | return; | |
718e3744 | 3758 | } |
3759 | ||
434434f7 DS |
3760 | rib_dest_t *zebra_rib_create_dest(struct route_node *rn) |
3761 | { | |
3762 | rib_dest_t *dest; | |
3763 | ||
3764 | dest = XCALLOC(MTYPE_RIB_DEST, sizeof(rib_dest_t)); | |
aa57abfb | 3765 | rnh_list_init(&dest->nht); |
daaeaa21 | 3766 | re_list_init(&dest->routes); |
434434f7 DS |
3767 | route_lock_node(rn); /* rn route table reference */ |
3768 | rn->info = dest; | |
3769 | dest->rnode = rn; | |
3770 | ||
3771 | return dest; | |
3772 | } | |
3773 | ||
6d691129 PJ |
3774 | /* RIB updates are processed via a queue of pointers to route_nodes. |
3775 | * | |
3776 | * The queue length is bounded by the maximal size of the routing table, | |
3777 | * as a route_node will not be requeued, if already queued. | |
3778 | * | |
f0f77c9a DS |
3779 | * REs are submitted via rib_addnode or rib_delnode which set minimal |
3780 | * state, or static_install_route (when an existing RE is updated) | |
3c0755dc | 3781 | * and then submit route_node to queue for best-path selection later. |
f0f77c9a | 3782 | * Order of add/delete state changes are preserved for any given RE. |
6d691129 | 3783 | * |
f0f77c9a | 3784 | * Deleted REs are reaped during best-path selection. |
6d691129 PJ |
3785 | * |
3786 | * rib_addnode | |
f0f77c9a DS |
3787 | * |-> rib_link or unset ROUTE_ENTRY_REMOVE |->Update kernel with |
3788 | * |-------->| | best RE, if required | |
3c0755dc PJ |
3789 | * | | |
3790 | * static_install->|->rib_addqueue...... -> rib_process | |
3791 | * | | | |
3792 | * |-------->| |-> rib_unlink | |
f0f77c9a DS |
3793 | * |-> set ROUTE_ENTRY_REMOVE | |
3794 | * rib_delnode (RE freed) | |
6d691129 | 3795 | * |
9fd92e3c AS |
3796 | * The 'info' pointer of a route_node points to a rib_dest_t |
3797 | * ('dest'). Queueing state for a route_node is kept on the dest. The | |
3798 | * dest is created on-demand by rib_link() and is kept around at least | |
3799 | * as long as there are ribs hanging off it (@see rib_gc_dest()). | |
d62a17ae | 3800 | * |
32367e7a | 3801 | * Refcounting (aka "locking" throughout the Zebra and FRR code): |
6d691129 PJ |
3802 | * |
3803 | * - route_nodes: refcounted by: | |
9fd92e3c AS |
3804 | * - dest attached to route_node: |
3805 | * - managed by: rib_link/rib_gc_dest | |
6d691129 PJ |
3806 | * - route_node processing queue |
3807 | * - managed by: rib_addqueue, rib_process. | |
3808 | * | |
3809 | */ | |
d62a17ae | 3810 | |
f0f77c9a | 3811 | /* Add RE to head of the route node. */ |
d62a17ae | 3812 | static void rib_link(struct route_node *rn, struct route_entry *re, int process) |
3813 | { | |
d62a17ae | 3814 | rib_dest_t *dest; |
3815 | afi_t afi; | |
3816 | const char *rmap_name; | |
9fd92e3c | 3817 | |
d62a17ae | 3818 | assert(re && rn); |
9fd92e3c | 3819 | |
d62a17ae | 3820 | dest = rib_dest_from_rnode(rn); |
3821 | if (!dest) { | |
3822 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3823 | rnode_debug(rn, re->vrf_id, "rn %p adding dest", rn); | |
7a4bb9c5 | 3824 | |
434434f7 | 3825 | dest = zebra_rib_create_dest(rn); |
d62a17ae | 3826 | } |
2263a412 | 3827 | |
045207e2 | 3828 | re_list_add_head(&dest->routes, re); |
d62a17ae | 3829 | |
3830 | afi = (rn->p.family == AF_INET) | |
3831 | ? AFI_IP | |
3832 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3833 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3834 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3835 | ||
d62a17ae | 3836 | rmap_name = zebra_get_import_table_route_map(afi, re->table); |
fe257ae7 | 3837 | zebra_add_import_table_entry(zvrf, rn, re, rmap_name); |
d62a17ae | 3838 | } else if (process) |
3839 | rib_queue_add(rn); | |
3840 | } | |
3841 | ||
7e24fdf3 DS |
3842 | static void rib_addnode(struct route_node *rn, |
3843 | struct route_entry *re, int process) | |
d62a17ae | 3844 | { |
3845 | /* RE node has been un-removed before route-node is processed. | |
3846 | * route_node must hence already be on the queue for processing.. | |
3847 | */ | |
3848 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
3849 | if (IS_ZEBRA_DEBUG_RIB) | |
3850 | rnode_debug(rn, re->vrf_id, "rn %p, un-removed re %p", | |
3851 | (void *)rn, (void *)re); | |
3852 | ||
3853 | UNSET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3854 | return; | |
3855 | } | |
3856 | rib_link(rn, re, process); | |
6d691129 PJ |
3857 | } |
3858 | ||
9fd92e3c AS |
3859 | /* |
3860 | * rib_unlink | |
3861 | * | |
3862 | * Detach a rib structure from a route_node. | |
3863 | * | |
3864 | * Note that a call to rib_unlink() should be followed by a call to | |
3865 | * rib_gc_dest() at some point. This allows a rib_dest_t that is no | |
3866 | * longer required to be deleted. | |
3867 | */ | |
d62a17ae | 3868 | void rib_unlink(struct route_node *rn, struct route_entry *re) |
6d691129 | 3869 | { |
d62a17ae | 3870 | rib_dest_t *dest; |
9fd92e3c | 3871 | |
d62a17ae | 3872 | assert(rn && re); |
6d691129 | 3873 | |
d62a17ae | 3874 | if (IS_ZEBRA_DEBUG_RIB) |
3875 | rnode_debug(rn, re->vrf_id, "rn %p, re %p", (void *)rn, | |
3876 | (void *)re); | |
6d691129 | 3877 | |
d62a17ae | 3878 | dest = rib_dest_from_rnode(rn); |
6d691129 | 3879 | |
045207e2 | 3880 | re_list_del(&dest->routes, re); |
7a4bb9c5 | 3881 | |
2eb07de3 DS |
3882 | if (dest->selected_fib == re) |
3883 | dest->selected_fib = NULL; | |
3884 | ||
ce649b9d | 3885 | rib_re_nhg_free(re); |
ee5e8a48 | 3886 | |
b86c1f4f | 3887 | zapi_re_opaque_free(re->opaque); |
a29a6001 | 3888 | |
d62a17ae | 3889 | XFREE(MTYPE_RE, re); |
3890 | } | |
3891 | ||
3892 | void rib_delnode(struct route_node *rn, struct route_entry *re) | |
3893 | { | |
3894 | afi_t afi; | |
3895 | ||
3896 | if (IS_ZEBRA_DEBUG_RIB) | |
3897 | rnode_debug(rn, re->vrf_id, "rn %p, re %p, removing", | |
3898 | (void *)rn, (void *)re); | |
3899 | SET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3900 | ||
3901 | afi = (rn->p.family == AF_INET) | |
3902 | ? AFI_IP | |
3903 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3904 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3905 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3906 | ||
3907 | zebra_del_import_table_entry(zvrf, rn, re); | |
d62a17ae | 3908 | /* Just clean up if non main table */ |
e658173a DS |
3909 | if (IS_ZEBRA_DEBUG_RIB) |
3910 | zlog_debug("%s(%u):%pRN: Freeing route rn %p, re %p (%s)", | |
3911 | vrf_id_to_name(re->vrf_id), re->vrf_id, rn, | |
bd47f3a3 | 3912 | rn, re, zebra_route_string(re->type)); |
7a4bb9c5 | 3913 | |
d62a17ae | 3914 | rib_unlink(rn, re); |
3915 | } else { | |
3916 | rib_queue_add(rn); | |
3917 | } | |
718e3744 | 3918 | } |
3919 | ||
6d81b590 MS |
3920 | /* |
3921 | * Helper that debugs a single nexthop within a route-entry | |
3922 | */ | |
3923 | static void _route_entry_dump_nh(const struct route_entry *re, | |
3924 | const char *straddr, | |
3925 | const struct nexthop *nexthop) | |
3926 | { | |
3927 | char nhname[PREFIX_STRLEN]; | |
3928 | char backup_str[50]; | |
3929 | char wgt_str[50]; | |
474aebd9 | 3930 | char temp_str[10]; |
cbe5bafb | 3931 | char label_str[MPLS_LABEL_STRLEN]; |
474aebd9 | 3932 | int i; |
6d81b590 MS |
3933 | struct interface *ifp; |
3934 | struct vrf *vrf = vrf_lookup_by_id(nexthop->vrf_id); | |
3935 | ||
3936 | switch (nexthop->type) { | |
3937 | case NEXTHOP_TYPE_BLACKHOLE: | |
772270f3 | 3938 | snprintf(nhname, sizeof(nhname), "Blackhole"); |
6d81b590 MS |
3939 | break; |
3940 | case NEXTHOP_TYPE_IFINDEX: | |
3941 | ifp = if_lookup_by_index(nexthop->ifindex, nexthop->vrf_id); | |
772270f3 QY |
3942 | snprintf(nhname, sizeof(nhname), "%s", |
3943 | ifp ? ifp->name : "Unknown"); | |
6d81b590 MS |
3944 | break; |
3945 | case NEXTHOP_TYPE_IPV4: | |
3946 | /* fallthrough */ | |
3947 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
3948 | inet_ntop(AF_INET, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
3949 | break; | |
3950 | case NEXTHOP_TYPE_IPV6: | |
3951 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3952 | inet_ntop(AF_INET6, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
3953 | break; | |
3954 | } | |
3955 | ||
cbe5bafb MS |
3956 | /* Label stack */ |
3957 | label_str[0] = '\0'; | |
3958 | if (nexthop->nh_label && nexthop->nh_label->num_labels > 0) { | |
3959 | mpls_label2str(nexthop->nh_label->num_labels, | |
3960 | nexthop->nh_label->label, label_str, | |
3961 | sizeof(label_str), 0 /*pretty*/); | |
3962 | strlcat(label_str, ", ", sizeof(label_str)); | |
3963 | } | |
3964 | ||
6d81b590 MS |
3965 | backup_str[0] = '\0'; |
3966 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3967 | snprintf(backup_str, sizeof(backup_str), "backup "); |
3968 | for (i = 0; i < nexthop->backup_num; i++) { | |
3969 | snprintf(temp_str, sizeof(temp_str), "%d, ", | |
3970 | nexthop->backup_idx[i]); | |
3971 | strlcat(backup_str, temp_str, sizeof(backup_str)); | |
3972 | } | |
6d81b590 MS |
3973 | } |
3974 | ||
3975 | wgt_str[0] = '\0'; | |
3976 | if (nexthop->weight) | |
3977 | snprintf(wgt_str, sizeof(wgt_str), "wgt %d,", nexthop->weight); | |
3978 | ||
5609e70f | 3979 | zlog_debug("%s: %s %s[%u] %svrf %s(%u) %s%s with flags %s%s%s%s%s%s%s%s%s", |
6d81b590 | 3980 | straddr, (nexthop->rparent ? " NH" : "NH"), nhname, |
cbe5bafb | 3981 | nexthop->ifindex, label_str, vrf ? vrf->name : "Unknown", |
6d81b590 MS |
3982 | nexthop->vrf_id, |
3983 | wgt_str, backup_str, | |
3984 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
3985 | ? "ACTIVE " | |
3986 | : ""), | |
3987 | (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) | |
3988 | ? "FIB " | |
3989 | : ""), | |
3990 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
3991 | ? "RECURSIVE " | |
3992 | : ""), | |
3993 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK) | |
3994 | ? "ONLINK " | |
3995 | : ""), | |
3996 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_DUPLICATE) | |
3997 | ? "DUPLICATE " | |
aab4eca1 DS |
3998 | : ""), |
3999 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RNH_FILTERED) | |
4000 | ? "FILTERED " : ""), | |
4001 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP) | |
4002 | ? "BACKUP " : ""), | |
4003 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE) | |
5609e70f XL |
4004 | ? "SRTE " : ""), |
4005 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_EVPN) | |
4006 | ? "EVPN " : "")); | |
6d81b590 MS |
4007 | |
4008 | } | |
4009 | ||
f0f77c9a | 4010 | /* This function dumps the contents of a given RE entry into |
dc95824a DO |
4011 | * standard debug log. Calling function name and IP prefix in |
4012 | * question are passed as 1st and 2nd arguments. | |
4013 | */ | |
d62a17ae | 4014 | void _route_entry_dump(const char *func, union prefixconstptr pp, |
4015 | union prefixconstptr src_pp, | |
4016 | const struct route_entry *re) | |
4017 | { | |
d62a17ae | 4018 | const struct prefix *src_p = src_pp.p; |
4019 | bool is_srcdst = src_p && src_p->prefixlen; | |
4020 | char straddr[PREFIX_STRLEN]; | |
4021 | char srcaddr[PREFIX_STRLEN]; | |
61e6de9d DS |
4022 | char flags_buf[128]; |
4023 | char status_buf[128]; | |
d62a17ae | 4024 | struct nexthop *nexthop; |
c479e756 | 4025 | struct vrf *vrf = vrf_lookup_by_id(re->vrf_id); |
6d81b590 | 4026 | struct nexthop_group *nhg; |
d62a17ae | 4027 | |
5d27875b DL |
4028 | prefix2str(pp, straddr, sizeof(straddr)); |
4029 | ||
c479e756 | 4030 | zlog_debug("%s: dumping RE entry %p for %s%s%s vrf %s(%u)", func, |
5d27875b | 4031 | (const void *)re, straddr, |
d62a17ae | 4032 | is_srcdst ? " from " : "", |
4033 | is_srcdst ? prefix2str(src_pp, srcaddr, sizeof(srcaddr)) | |
4034 | : "", | |
c479e756 | 4035 | VRF_LOGNAME(vrf), re->vrf_id); |
cc54cfee | 4036 | zlog_debug("%s: uptime == %lu, type == %u, instance == %d, table == %d", |
53c16fbe | 4037 | straddr, (unsigned long)re->uptime, re->type, re->instance, |
cc54cfee | 4038 | re->table); |
61e6de9d DS |
4039 | zlog_debug( |
4040 | "%s: metric == %u, mtu == %u, distance == %u, flags == %sstatus == %s", | |
4041 | straddr, re->metric, re->mtu, re->distance, | |
4042 | zclient_dump_route_flags(re->flags, flags_buf, | |
4043 | sizeof(flags_buf)), | |
4044 | _dump_re_status(re, status_buf, sizeof(status_buf))); | |
53c16fbe | 4045 | zlog_debug("%s: nexthop_num == %u, nexthop_active_num == %u", straddr, |
c415d895 MS |
4046 | nexthop_group_nexthop_num(&(re->nhe->nhg)), |
4047 | nexthop_group_active_nexthop_num(&(re->nhe->nhg))); | |
d62a17ae | 4048 | |
6d81b590 MS |
4049 | /* Dump nexthops */ |
4050 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) | |
4051 | _route_entry_dump_nh(re, straddr, nexthop); | |
2d68a0f2 | 4052 | |
d7ac4c4d DS |
4053 | if (zebra_nhg_get_backup_nhg(re->nhe)) { |
4054 | zlog_debug("%s: backup nexthops:", straddr); | |
c6eee91f | 4055 | |
d7ac4c4d DS |
4056 | nhg = zebra_nhg_get_backup_nhg(re->nhe); |
4057 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) | |
4058 | _route_entry_dump_nh(re, straddr, nexthop); | |
c6eee91f DS |
4059 | } |
4060 | ||
d7ac4c4d DS |
4061 | zlog_debug("%s: dump complete", straddr); |
4062 | } | |
cf363e1b | 4063 | |
d7ac4c4d DS |
4064 | static int rib_meta_queue_early_route_add(struct meta_queue *mq, void *data) |
4065 | { | |
4066 | struct zebra_early_route *ere = data; | |
718e3744 | 4067 | |
d7ac4c4d DS |
4068 | listnode_add(mq->subq[META_QUEUE_EARLY_ROUTE], data); |
4069 | mq->size++; | |
6883bf8d | 4070 | |
d7ac4c4d DS |
4071 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
4072 | zlog_debug( | |
4073 | "Route %pFX(%u) queued for processing into sub-queue %s", | |
4074 | &ere->p, ere->re->vrf_id, | |
4075 | subqueue2str(META_QUEUE_EARLY_ROUTE)); | |
6b0655a2 | 4076 | |
d7ac4c4d DS |
4077 | return 0; |
4078 | } | |
718e3744 | 4079 | |
b0385873 DS |
4080 | struct route_entry *zebra_rib_route_entry_new(vrf_id_t vrf_id, int type, |
4081 | uint8_t instance, uint32_t flags, | |
4082 | uint32_t nhe_id, | |
4083 | uint32_t table_id, | |
4084 | uint32_t metric, uint32_t mtu, | |
4085 | uint8_t distance, route_tag_t tag) | |
4086 | { | |
4087 | struct route_entry *re; | |
4088 | ||
4089 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); | |
4090 | re->type = type; | |
4091 | re->instance = instance; | |
4092 | re->distance = distance; | |
4093 | re->flags = flags; | |
4094 | re->metric = metric; | |
4095 | re->mtu = mtu; | |
4096 | re->table = table_id; | |
4097 | re->vrf_id = vrf_id; | |
4098 | re->uptime = monotime(NULL); | |
4099 | re->tag = tag; | |
4100 | re->nhe_id = nhe_id; | |
4101 | ||
4102 | return re; | |
4103 | } | |
d7ac4c4d DS |
4104 | /* |
4105 | * Internal route-add implementation; there are a couple of different public | |
4106 | * signatures. Callers in this path are responsible for the memory they | |
4107 | * allocate: if they allocate a nexthop_group or backup nexthop info, they | |
4108 | * must free those objects. If this returns < 0, an error has occurred and the | |
4109 | * route_entry 're' has not been captured; the caller should free that also. | |
4110 | * | |
4111 | * -1 -> error | |
4112 | * 0 -> Add | |
4113 | * 1 -> update | |
4114 | */ | |
4115 | int rib_add_multipath_nhe(afi_t afi, safi_t safi, struct prefix *p, | |
4116 | struct prefix_ipv6 *src_p, struct route_entry *re, | |
4117 | struct nhg_hash_entry *re_nhe, bool startup) | |
4118 | { | |
4119 | struct zebra_early_route *ere; | |
0ca6f3b1 | 4120 | |
d7ac4c4d DS |
4121 | if (!re) |
4122 | return -1; | |
0ca6f3b1 | 4123 | |
d7ac4c4d | 4124 | assert(!src_p || !src_p->prefixlen || afi == AFI_IP6); |
0ca6f3b1 | 4125 | |
d7ac4c4d DS |
4126 | ere = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(*ere)); |
4127 | ere->afi = afi; | |
4128 | ere->safi = safi; | |
4129 | ere->p = *p; | |
4130 | if (src_p) | |
4131 | ere->src_p = *src_p; | |
4132 | ere->src_p_provided = !!src_p; | |
4133 | ere->re = re; | |
4134 | ere->re_nhe = re_nhe; | |
4135 | ere->startup = startup; | |
4136 | ||
4137 | return mq_add_handler(ere, rib_meta_queue_early_route_add); | |
d62a17ae | 4138 | } |
4139 | ||
1d48702e MS |
4140 | /* |
4141 | * Add a single route. | |
4142 | */ | |
4143 | int rib_add_multipath(afi_t afi, safi_t safi, struct prefix *p, | |
4144 | struct prefix_ipv6 *src_p, struct route_entry *re, | |
c6eee91f | 4145 | struct nexthop_group *ng, bool startup) |
1d48702e MS |
4146 | { |
4147 | int ret; | |
d7ac4c4d | 4148 | struct nhg_hash_entry nhe, *n; |
1d48702e MS |
4149 | |
4150 | if (!re) | |
4151 | return -1; | |
4152 | ||
4153 | /* We either need nexthop(s) or an existing nexthop id */ | |
4154 | if (ng == NULL && re->nhe_id == 0) | |
4155 | return -1; | |
4156 | ||
4157 | /* | |
4158 | * Use a temporary nhe to convey info to the common/main api. | |
4159 | */ | |
377e29f7 | 4160 | zebra_nhe_init(&nhe, afi, (ng ? ng->nexthop : NULL)); |
1d48702e MS |
4161 | if (ng) |
4162 | nhe.nhg.nexthop = ng->nexthop; | |
4163 | else if (re->nhe_id > 0) | |
4164 | nhe.id = re->nhe_id; | |
4165 | ||
d7ac4c4d DS |
4166 | n = zebra_nhe_copy(&nhe, 0); |
4167 | ret = rib_add_multipath_nhe(afi, safi, p, src_p, re, n, startup); | |
1d48702e MS |
4168 | |
4169 | /* In error cases, free the route also */ | |
4170 | if (ret < 0) | |
4171 | XFREE(MTYPE_RE, re); | |
4172 | ||
4173 | return ret; | |
4174 | } | |
4175 | ||
d62a17ae | 4176 | void rib_delete(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 4177 | unsigned short instance, uint32_t flags, struct prefix *p, |
fd36be7e | 4178 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
bc541126 | 4179 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, |
3ceae22b | 4180 | uint8_t distance, bool fromkernel) |
d62a17ae | 4181 | { |
d7ac4c4d DS |
4182 | struct zebra_early_route *ere; |
4183 | struct route_entry *re = NULL; | |
4184 | struct nhg_hash_entry *nhe = NULL; | |
cf363e1b | 4185 | |
b0385873 DS |
4186 | re = zebra_rib_route_entry_new(vrf_id, type, instance, flags, nhe_id, |
4187 | table_id, metric, 0, distance, 0); | |
cf363e1b | 4188 | |
d7ac4c4d DS |
4189 | if (nh) { |
4190 | nhe = zebra_nhg_alloc(); | |
4191 | nhe->nhg.nexthop = nexthop_dup(nh, NULL); | |
5dfeba19 | 4192 | } |
05737783 | 4193 | |
d7ac4c4d DS |
4194 | ere = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(*ere)); |
4195 | ere->afi = afi; | |
4196 | ere->safi = safi; | |
4197 | ere->p = *p; | |
4198 | if (src_p) | |
4199 | ere->src_p = *src_p; | |
4200 | ere->src_p_provided = !!src_p; | |
4201 | ere->re = re; | |
4202 | ere->re_nhe = nhe; | |
4203 | ere->startup = false; | |
4204 | ere->deletion = true; | |
4205 | ere->fromkernel = fromkernel; | |
4206 | ||
4207 | mq_add_handler(ere, rib_meta_queue_early_route_add); | |
d62a17ae | 4208 | } |
718e3744 | 4209 | |
718e3744 | 4210 | |
d7c0a89a | 4211 | int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 4212 | unsigned short instance, uint32_t flags, struct prefix *p, |
d7c0a89a | 4213 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
8032b717 | 4214 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, uint32_t mtu, |
c6eee91f | 4215 | uint8_t distance, route_tag_t tag, bool startup) |
d62a17ae | 4216 | { |
bbb322f2 | 4217 | struct route_entry *re = NULL; |
d7ac4c4d DS |
4218 | struct nexthop nexthop = {}; |
4219 | struct nexthop_group ng = {}; | |
718e3744 | 4220 | |
66af6845 | 4221 | /* Allocate new route_entry structure. */ |
b0385873 DS |
4222 | re = zebra_rib_route_entry_new(vrf_id, type, instance, flags, nhe_id, |
4223 | table_id, metric, mtu, distance, tag); | |
bbb322f2 | 4224 | |
0eb97b86 MS |
4225 | /* If the owner of the route supplies a shared nexthop-group id, |
4226 | * we'll use that. Otherwise, pass the nexthop along directly. | |
4227 | */ | |
e22e8001 | 4228 | if (!nhe_id) { |
e22e8001 | 4229 | /* Add nexthop. */ |
d7ac4c4d DS |
4230 | nexthop = *nh; |
4231 | nexthop_group_add_sorted(&ng, &nexthop); | |
e22e8001 | 4232 | } |
718e3744 | 4233 | |
d7ac4c4d | 4234 | return rib_add_multipath(afi, safi, p, src_p, re, &ng, startup); |
718e3744 | 4235 | } |
4236 | ||
91e6f25b | 4237 | static const char *rib_update_event2str(enum rib_update_event event) |
2a99ab95 SW |
4238 | { |
4239 | const char *ret = "UNKNOWN"; | |
4240 | ||
4241 | switch (event) { | |
4242 | case RIB_UPDATE_KERNEL: | |
4243 | ret = "RIB_UPDATE_KERNEL"; | |
4244 | break; | |
4245 | case RIB_UPDATE_RMAP_CHANGE: | |
4246 | ret = "RIB_UPDATE_RMAP_CHANGE"; | |
4247 | break; | |
4248 | case RIB_UPDATE_OTHER: | |
4249 | ret = "RIB_UPDATE_OTHER"; | |
4250 | break; | |
4251 | case RIB_UPDATE_MAX: | |
4252 | break; | |
4253 | } | |
4254 | ||
4255 | return ret; | |
4256 | } | |
4257 | ||
4258 | ||
4259 | /* Schedule route nodes to be processed if they match the type */ | |
4260 | static void rib_update_route_node(struct route_node *rn, int type) | |
4261 | { | |
4262 | struct route_entry *re, *next; | |
4263 | bool re_changed = false; | |
4264 | ||
4265 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
4266 | if (type == ZEBRA_ROUTE_ALL || type == re->type) { | |
4267 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
4268 | re_changed = true; | |
4269 | } | |
4270 | } | |
4271 | ||
4272 | if (re_changed) | |
4273 | rib_queue_add(rn); | |
4274 | } | |
4275 | ||
1c848137 | 4276 | /* Schedule routes of a particular table (address-family) based on event. */ |
54aeba35 DS |
4277 | void rib_update_table(struct route_table *table, enum rib_update_event event, |
4278 | int rtype) | |
d62a17ae | 4279 | { |
4280 | struct route_node *rn; | |
2a99ab95 SW |
4281 | |
4282 | if (IS_ZEBRA_DEBUG_EVENT) { | |
4283 | struct zebra_vrf *zvrf; | |
4284 | struct vrf *vrf; | |
4285 | ||
630d5962 DS |
4286 | zvrf = table->info |
4287 | ? ((struct rib_table_info *)table->info)->zvrf | |
4288 | : NULL; | |
2a99ab95 SW |
4289 | vrf = zvrf ? zvrf->vrf : NULL; |
4290 | ||
54aeba35 | 4291 | zlog_debug("%s: %s VRF %s Table %u event %s Route type: %s", __func__, |
2a99ab95 | 4292 | table->info ? afi2str( |
630d5962 | 4293 | ((struct rib_table_info *)table->info)->afi) |
2a99ab95 | 4294 | : "Unknown", |
bd47f3a3 | 4295 | VRF_LOGNAME(vrf), zvrf ? zvrf->table_id : 0, |
54aeba35 | 4296 | rib_update_event2str(event), zebra_route_string(rtype)); |
2a99ab95 | 4297 | } |
d62a17ae | 4298 | |
4299 | /* Walk all routes and queue for processing, if appropriate for | |
4300 | * the trigger event. | |
4301 | */ | |
4302 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { | |
1ca60f2c DS |
4303 | /* |
4304 | * If we are looking at a route node and the node | |
4305 | * has already been queued we don't | |
4306 | * need to queue it up again | |
4307 | */ | |
2a99ab95 SW |
4308 | if (rn->info |
4309 | && CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
4310 | RIB_ROUTE_ANY_QUEUED)) | |
1ca60f2c | 4311 | continue; |
2a99ab95 | 4312 | |
d62a17ae | 4313 | switch (event) { |
2a99ab95 SW |
4314 | case RIB_UPDATE_KERNEL: |
4315 | rib_update_route_node(rn, ZEBRA_ROUTE_KERNEL); | |
4316 | break; | |
d62a17ae | 4317 | case RIB_UPDATE_RMAP_CHANGE: |
4318 | case RIB_UPDATE_OTHER: | |
54aeba35 | 4319 | rib_update_route_node(rn, rtype); |
d62a17ae | 4320 | break; |
d62a17ae | 4321 | default: |
4322 | break; | |
4323 | } | |
4324 | } | |
b84c7253 | 4325 | } |
4326 | ||
54aeba35 DS |
4327 | static void rib_update_handle_vrf(vrf_id_t vrf_id, enum rib_update_event event, |
4328 | int rtype) | |
718e3744 | 4329 | { |
d62a17ae | 4330 | struct route_table *table; |
1c848137 | 4331 | |
2a99ab95 SW |
4332 | if (IS_ZEBRA_DEBUG_EVENT) |
4333 | zlog_debug("%s: Handling VRF %s event %s", __func__, | |
4334 | vrf_id_to_name(vrf_id), rib_update_event2str(event)); | |
4335 | ||
d62a17ae | 4336 | /* Process routes of interested address-families. */ |
4337 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
2a99ab95 | 4338 | if (table) |
54aeba35 | 4339 | rib_update_table(table, event, rtype); |
718e3744 | 4340 | |
d62a17ae | 4341 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, vrf_id); |
2a99ab95 | 4342 | if (table) |
54aeba35 | 4343 | rib_update_table(table, event, rtype); |
2a99ab95 SW |
4344 | } |
4345 | ||
54aeba35 | 4346 | static void rib_update_handle_vrf_all(enum rib_update_event event, int rtype) |
2a99ab95 SW |
4347 | { |
4348 | struct zebra_router_table *zrt; | |
4349 | ||
4350 | if (IS_ZEBRA_DEBUG_EVENT) | |
4351 | zlog_debug("%s: Handling VRF (ALL) event %s", __func__, | |
4352 | rib_update_event2str(event)); | |
4353 | ||
4354 | /* Just iterate over all the route tables, rather than vrf lookups */ | |
4355 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) | |
54aeba35 | 4356 | rib_update_table(zrt->table, event, rtype); |
2a99ab95 SW |
4357 | } |
4358 | ||
4359 | struct rib_update_ctx { | |
91e6f25b | 4360 | enum rib_update_event event; |
2a99ab95 SW |
4361 | bool vrf_all; |
4362 | vrf_id_t vrf_id; | |
4363 | }; | |
4364 | ||
4365 | static struct rib_update_ctx *rib_update_ctx_init(vrf_id_t vrf_id, | |
91e6f25b | 4366 | enum rib_update_event event) |
2a99ab95 SW |
4367 | { |
4368 | struct rib_update_ctx *ctx; | |
4369 | ||
4370 | ctx = XCALLOC(MTYPE_RIB_UPDATE_CTX, sizeof(struct rib_update_ctx)); | |
4371 | ||
4372 | ctx->event = event; | |
4373 | ctx->vrf_id = vrf_id; | |
4374 | ||
4375 | return ctx; | |
4376 | } | |
4377 | ||
4378 | static void rib_update_ctx_fini(struct rib_update_ctx **ctx) | |
4379 | { | |
4380 | XFREE(MTYPE_RIB_UPDATE_CTX, *ctx); | |
2a99ab95 SW |
4381 | } |
4382 | ||
cc9f21da | 4383 | static void rib_update_handler(struct thread *thread) |
2a99ab95 SW |
4384 | { |
4385 | struct rib_update_ctx *ctx; | |
4386 | ||
4387 | ctx = THREAD_ARG(thread); | |
4388 | ||
4389 | if (ctx->vrf_all) | |
54aeba35 | 4390 | rib_update_handle_vrf_all(ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 | 4391 | else |
54aeba35 | 4392 | rib_update_handle_vrf(ctx->vrf_id, ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 SW |
4393 | |
4394 | rib_update_ctx_fini(&ctx); | |
2a99ab95 SW |
4395 | } |
4396 | ||
4397 | /* | |
4398 | * Thread list to ensure we don't schedule a ton of events | |
4399 | * if interfaces are flapping for instance. | |
4400 | */ | |
4401 | static struct thread *t_rib_update_threads[RIB_UPDATE_MAX]; | |
4402 | ||
2a99ab95 | 4403 | /* Schedule a RIB update event for all vrfs */ |
91e6f25b | 4404 | void rib_update(enum rib_update_event event) |
2a99ab95 SW |
4405 | { |
4406 | struct rib_update_ctx *ctx; | |
4407 | ||
e13f12a7 DS |
4408 | if (thread_is_scheduled(t_rib_update_threads[event])) |
4409 | return; | |
2a99ab95 | 4410 | |
e13f12a7 | 4411 | ctx = rib_update_ctx_init(0, event); |
2a99ab95 SW |
4412 | ctx->vrf_all = true; |
4413 | ||
e13f12a7 DS |
4414 | thread_add_event(zrouter.master, rib_update_handler, ctx, 0, |
4415 | &t_rib_update_threads[event]); | |
4416 | ||
4417 | if (IS_ZEBRA_DEBUG_EVENT) | |
05267678 | 4418 | zlog_debug("%s: Scheduled VRF (ALL), event %s", __func__, |
2a99ab95 | 4419 | rib_update_event2str(event)); |
718e3744 | 4420 | } |
4421 | ||
718e3744 | 4422 | /* Delete self installed routes after zebra is relaunched. */ |
95a29032 | 4423 | void rib_sweep_table(struct route_table *table) |
d62a17ae | 4424 | { |
4425 | struct route_node *rn; | |
4426 | struct route_entry *re; | |
4427 | struct route_entry *next; | |
915902cb | 4428 | struct nexthop *nexthop; |
d62a17ae | 4429 | |
915902cb DS |
4430 | if (!table) |
4431 | return; | |
d62a17ae | 4432 | |
6d81b590 MS |
4433 | if (IS_ZEBRA_DEBUG_RIB) |
4434 | zlog_debug("%s: starting", __func__); | |
4435 | ||
915902cb | 4436 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
a2addae8 | 4437 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d4644d41 | 4438 | |
915902cb DS |
4439 | if (IS_ZEBRA_DEBUG_RIB) |
4440 | route_entry_dump(&rn->p, NULL, re); | |
4441 | ||
4442 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
4443 | continue; | |
4444 | ||
4445 | if (!CHECK_FLAG(re->flags, ZEBRA_FLAG_SELFROUTE)) | |
4446 | continue; | |
4447 | ||
d4644d41 DS |
4448 | /* |
4449 | * If routes are older than startup_time then | |
4450 | * we know we read them in from the kernel. | |
4451 | * As such we can safely remove them. | |
4452 | */ | |
4453 | if (zrouter.startup_time < re->uptime) | |
4454 | continue; | |
4455 | ||
915902cb DS |
4456 | /* |
4457 | * So we are starting up and have received | |
4458 | * routes from the kernel that we have installed | |
4459 | * from a previous run of zebra but not cleaned | |
4460 | * up ( say a kill -9 ) | |
4461 | * But since we haven't actually installed | |
4462 | * them yet( we received them from the kernel ) | |
4463 | * we don't think they are active. | |
4464 | * So let's pretend they are active to actually | |
4465 | * remove them. | |
4466 | * In all honesty I'm not sure if we should | |
4467 | * mark them as active when we receive them | |
4468 | * This is startup only so probably ok. | |
4469 | * | |
4470 | * If we ever decide to move rib_sweep_table | |
4471 | * to a different spot (ie startup ) | |
4472 | * this decision needs to be revisited | |
4473 | */ | |
677c1dd5 | 4474 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 4475 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
915902cb DS |
4476 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
4477 | ||
0c555cc6 DS |
4478 | rib_uninstall_kernel(rn, re); |
4479 | rib_delnode(rn, re); | |
915902cb DS |
4480 | } |
4481 | } | |
6d81b590 MS |
4482 | |
4483 | if (IS_ZEBRA_DEBUG_RIB) | |
4484 | zlog_debug("%s: ends", __func__); | |
718e3744 | 4485 | } |
4486 | ||
4487 | /* Sweep all RIB tables. */ | |
cc9f21da | 4488 | void rib_sweep_route(struct thread *t) |
718e3744 | 4489 | { |
d62a17ae | 4490 | struct vrf *vrf; |
4491 | struct zebra_vrf *zvrf; | |
78104b9b | 4492 | |
a2addae8 | 4493 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
915902cb DS |
4494 | if ((zvrf = vrf->info) == NULL) |
4495 | continue; | |
4496 | ||
d62a17ae | 4497 | rib_sweep_table(zvrf->table[AFI_IP][SAFI_UNICAST]); |
4498 | rib_sweep_table(zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4499 | } | |
95a29032 | 4500 | |
89272910 | 4501 | zebra_router_sweep_route(); |
38e40db1 | 4502 | zebra_router_sweep_nhgs(); |
718e3744 | 4503 | } |
2ea1ab1c VT |
4504 | |
4505 | /* Remove specific by protocol routes from 'table'. */ | |
d7c0a89a | 4506 | unsigned long rib_score_proto_table(uint8_t proto, unsigned short instance, |
47a08aa9 | 4507 | struct route_table *table) |
d62a17ae | 4508 | { |
4509 | struct route_node *rn; | |
4510 | struct route_entry *re; | |
4511 | struct route_entry *next; | |
4512 | unsigned long n = 0; | |
4513 | ||
4514 | if (table) | |
4515 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) | |
a2addae8 | 4516 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 4517 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
4518 | continue; | |
4519 | if (re->type == proto | |
4520 | && re->instance == instance) { | |
4521 | rib_delnode(rn, re); | |
4522 | n++; | |
4523 | } | |
4524 | } | |
4525 | return n; | |
2ea1ab1c VT |
4526 | } |
4527 | ||
4528 | /* Remove specific by protocol routes. */ | |
d7c0a89a | 4529 | unsigned long rib_score_proto(uint8_t proto, unsigned short instance) |
2ea1ab1c | 4530 | { |
d62a17ae | 4531 | struct vrf *vrf; |
4532 | struct zebra_vrf *zvrf; | |
d8612e65 | 4533 | struct other_route_table *ort; |
d62a17ae | 4534 | unsigned long cnt = 0; |
78104b9b | 4535 | |
d8612e65 DS |
4536 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
4537 | zvrf = vrf->info; | |
4538 | if (!zvrf) | |
4539 | continue; | |
78104b9b | 4540 | |
d8612e65 DS |
4541 | cnt += rib_score_proto_table(proto, instance, |
4542 | zvrf->table[AFI_IP][SAFI_UNICAST]) | |
4543 | + rib_score_proto_table( | |
4544 | proto, instance, | |
4545 | zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4546 | ||
81fddbe7 | 4547 | frr_each(otable, &zvrf->other_tables, ort) cnt += |
d8612e65 DS |
4548 | rib_score_proto_table(proto, instance, ort->table); |
4549 | } | |
47a08aa9 | 4550 | |
d62a17ae | 4551 | return cnt; |
2ea1ab1c VT |
4552 | } |
4553 | ||
718e3744 | 4554 | /* Close RIB and clean up kernel routes. */ |
d62a17ae | 4555 | void rib_close_table(struct route_table *table) |
718e3744 | 4556 | { |
d62a17ae | 4557 | struct route_node *rn; |
5f7a4718 | 4558 | rib_dest_t *dest; |
718e3744 | 4559 | |
1e9f448f DS |
4560 | if (!table) |
4561 | return; | |
9fd92e3c | 4562 | |
5f7a4718 DS |
4563 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
4564 | dest = rib_dest_from_rnode(rn); | |
1e9f448f | 4565 | |
5f7a4718 | 4566 | if (dest && dest->selected_fib) { |
3cdba47a DS |
4567 | rib_uninstall_kernel(rn, dest->selected_fib); |
4568 | dest->selected_fib = NULL; | |
1e9f448f | 4569 | } |
5f7a4718 | 4570 | } |
718e3744 | 4571 | } |
4572 | ||
9bd9717b MS |
4573 | /* |
4574 | * Handler for async dataplane results after a pseudowire installation | |
4575 | */ | |
f00b37e7 | 4576 | static void handle_pw_result(struct zebra_dplane_ctx *ctx) |
9bd9717b | 4577 | { |
9bd9717b MS |
4578 | struct zebra_pw *pw; |
4579 | struct zebra_vrf *vrf; | |
4580 | ||
4581 | /* The pseudowire code assumes success - we act on an error | |
4582 | * result for installation attempts here. | |
4583 | */ | |
4584 | if (dplane_ctx_get_op(ctx) != DPLANE_OP_PW_INSTALL) | |
f00b37e7 | 4585 | return; |
9bd9717b MS |
4586 | |
4587 | if (dplane_ctx_get_status(ctx) != ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
4588 | vrf = zebra_vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); | |
7c7ef4a8 | 4589 | pw = zebra_pw_find(vrf, dplane_ctx_get_ifname(ctx)); |
9bd9717b | 4590 | if (pw) |
fd563cc7 KS |
4591 | zebra_pw_install_failure(pw, |
4592 | dplane_ctx_get_pw_status(ctx)); | |
9bd9717b | 4593 | } |
9bd9717b MS |
4594 | } |
4595 | ||
7cdb1a84 | 4596 | /* |
d37f4d6c MS |
4597 | * Handle results from the dataplane system. Dequeue update context |
4598 | * structs, dispatch to appropriate internal handlers. | |
7cdb1a84 | 4599 | */ |
cc9f21da | 4600 | static void rib_process_dplane_results(struct thread *thread) |
7cdb1a84 | 4601 | { |
25779064 | 4602 | struct zebra_dplane_ctx *ctx; |
4c206c8f | 4603 | struct dplane_ctx_q ctxlist; |
2fc69f03 | 4604 | bool shut_p = false; |
4c206c8f MS |
4605 | |
4606 | /* Dequeue a list of completed updates with one lock/unlock cycle */ | |
7cdb1a84 MS |
4607 | |
4608 | do { | |
4c206c8f MS |
4609 | TAILQ_INIT(&ctxlist); |
4610 | ||
7cdb1a84 | 4611 | /* Take lock controlling queue of results */ |
cb1991af | 4612 | frr_with_mutex (&dplane_mutex) { |
d37f4d6c | 4613 | /* Dequeue list of context structs */ |
4c206c8f | 4614 | dplane_ctx_list_append(&ctxlist, &rib_dplane_q); |
7cdb1a84 | 4615 | } |
7cdb1a84 | 4616 | |
4c206c8f MS |
4617 | /* Dequeue context block */ |
4618 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4619 | ||
4620 | /* If we've emptied the results queue, we're done */ | |
4621 | if (ctx == NULL) | |
7cdb1a84 | 4622 | break; |
7cdb1a84 | 4623 | |
2fc69f03 MS |
4624 | /* If zebra is shutting down, avoid processing results, |
4625 | * just drain the results queue. | |
4626 | */ | |
4627 | shut_p = atomic_load_explicit(&zrouter.in_shutdown, | |
4628 | memory_order_relaxed); | |
4629 | if (shut_p) { | |
4630 | while (ctx) { | |
4631 | dplane_ctx_fini(&ctx); | |
4632 | ||
4633 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4634 | } | |
4635 | ||
4636 | continue; | |
4637 | } | |
4638 | ||
1247efcc DL |
4639 | #ifdef HAVE_SCRIPTING |
4640 | char *script_name = frrscript_names_get_script_name( | |
4641 | ZEBRA_ON_RIB_PROCESS_HOOK_CALL); | |
4642 | ||
4643 | int ret = 1; | |
4644 | struct frrscript *fs; | |
4645 | ||
4646 | if (script_name) { | |
4647 | fs = frrscript_new(script_name); | |
4648 | if (fs) | |
4649 | ret = frrscript_load( | |
4650 | fs, ZEBRA_ON_RIB_PROCESS_HOOK_CALL, | |
4651 | NULL); | |
4652 | } | |
4653 | #endif /* HAVE_SCRIPTING */ | |
4654 | ||
4c206c8f | 4655 | while (ctx) { |
1247efcc DL |
4656 | |
4657 | #ifdef HAVE_SCRIPTING | |
4658 | if (ret == 0) | |
4659 | frrscript_call(fs, | |
4660 | ZEBRA_ON_RIB_PROCESS_HOOK_CALL, | |
4661 | ("ctx", ctx)); | |
4662 | #endif /* HAVE_SCRIPTING */ | |
4663 | ||
d37f4d6c MS |
4664 | switch (dplane_ctx_get_op(ctx)) { |
4665 | case DPLANE_OP_ROUTE_INSTALL: | |
4666 | case DPLANE_OP_ROUTE_UPDATE: | |
4667 | case DPLANE_OP_ROUTE_DELETE: | |
188a00e0 MS |
4668 | /* Bit of special case for route updates |
4669 | * that were generated by async notifications: | |
4670 | * we don't want to continue processing these | |
4671 | * in the rib. | |
4672 | */ | |
4673 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4674 | rib_process_result(ctx); | |
f00b37e7 | 4675 | break; |
d37f4d6c | 4676 | |
54818e3b MS |
4677 | case DPLANE_OP_ROUTE_NOTIFY: |
4678 | rib_process_dplane_notify(ctx); | |
d37f4d6c MS |
4679 | break; |
4680 | ||
9865e1c3 SW |
4681 | case DPLANE_OP_NH_INSTALL: |
4682 | case DPLANE_OP_NH_UPDATE: | |
4683 | case DPLANE_OP_NH_DELETE: | |
4684 | zebra_nhg_dplane_result(ctx); | |
4685 | break; | |
4686 | ||
d37f4d6c MS |
4687 | case DPLANE_OP_LSP_INSTALL: |
4688 | case DPLANE_OP_LSP_UPDATE: | |
4689 | case DPLANE_OP_LSP_DELETE: | |
188a00e0 MS |
4690 | /* Bit of special case for LSP updates |
4691 | * that were generated by async notifications: | |
4692 | * we don't want to continue processing these. | |
4693 | */ | |
4694 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4695 | zebra_mpls_lsp_dplane_result(ctx); | |
f00b37e7 | 4696 | break; |
d37f4d6c | 4697 | |
104e3ad9 MS |
4698 | case DPLANE_OP_LSP_NOTIFY: |
4699 | zebra_mpls_process_dplane_notify(ctx); | |
d37f4d6c MS |
4700 | break; |
4701 | ||
9bd9717b MS |
4702 | case DPLANE_OP_PW_INSTALL: |
4703 | case DPLANE_OP_PW_UNINSTALL: | |
4704 | handle_pw_result(ctx); | |
4705 | break; | |
4706 | ||
cf363e1b MS |
4707 | case DPLANE_OP_SYS_ROUTE_ADD: |
4708 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
cf363e1b MS |
4709 | break; |
4710 | ||
036d93c0 MS |
4711 | case DPLANE_OP_MAC_INSTALL: |
4712 | case DPLANE_OP_MAC_DELETE: | |
4713 | zebra_vxlan_handle_result(ctx); | |
4714 | break; | |
4715 | ||
f62e5480 JU |
4716 | case DPLANE_OP_RULE_ADD: |
4717 | case DPLANE_OP_RULE_DELETE: | |
4718 | case DPLANE_OP_RULE_UPDATE: | |
5162e000 PG |
4719 | case DPLANE_OP_IPTABLE_ADD: |
4720 | case DPLANE_OP_IPTABLE_DELETE: | |
ef524230 PG |
4721 | case DPLANE_OP_IPSET_ADD: |
4722 | case DPLANE_OP_IPSET_DELETE: | |
4723 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
4724 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
f62e5480 JU |
4725 | zebra_pbr_dplane_result(ctx); |
4726 | break; | |
4727 | ||
d166308b MS |
4728 | case DPLANE_OP_INTF_ADDR_ADD: |
4729 | case DPLANE_OP_INTF_ADDR_DEL: | |
5d414138 SW |
4730 | case DPLANE_OP_INTF_INSTALL: |
4731 | case DPLANE_OP_INTF_UPDATE: | |
4732 | case DPLANE_OP_INTF_DELETE: | |
cd787a8a | 4733 | case DPLANE_OP_INTF_NETCONFIG: |
5d414138 | 4734 | zebra_if_dplane_result(ctx); |
cd787a8a MS |
4735 | break; |
4736 | ||
c317d3f2 SY |
4737 | case DPLANE_OP_TC_QDISC_INSTALL: |
4738 | case DPLANE_OP_TC_QDISC_UNINSTALL: | |
4739 | case DPLANE_OP_TC_CLASS_ADD: | |
4740 | case DPLANE_OP_TC_CLASS_DELETE: | |
4741 | case DPLANE_OP_TC_CLASS_UPDATE: | |
4742 | case DPLANE_OP_TC_FILTER_ADD: | |
4743 | case DPLANE_OP_TC_FILTER_DELETE: | |
4744 | case DPLANE_OP_TC_FILTER_UPDATE: | |
449a30ed SY |
4745 | break; |
4746 | ||
931fa60c MS |
4747 | /* Some op codes not handled here */ |
4748 | case DPLANE_OP_ADDR_INSTALL: | |
4749 | case DPLANE_OP_ADDR_UNINSTALL: | |
4750 | case DPLANE_OP_NEIGH_INSTALL: | |
4751 | case DPLANE_OP_NEIGH_UPDATE: | |
4752 | case DPLANE_OP_NEIGH_DELETE: | |
0a27a2fe PG |
4753 | case DPLANE_OP_NEIGH_IP_INSTALL: |
4754 | case DPLANE_OP_NEIGH_IP_DELETE: | |
0bbd4ff4 MS |
4755 | case DPLANE_OP_VTEP_ADD: |
4756 | case DPLANE_OP_VTEP_DELETE: | |
d68e74b4 | 4757 | case DPLANE_OP_NEIGH_DISCOVER: |
c60522f7 | 4758 | case DPLANE_OP_BR_PORT_UPDATE: |
e18747a9 | 4759 | case DPLANE_OP_NEIGH_TABLE_UPDATE: |
62b4b7e4 | 4760 | case DPLANE_OP_GRE_SET: |
931fa60c | 4761 | case DPLANE_OP_NONE: |
d37f4d6c | 4762 | break; |
931fa60c | 4763 | |
d37f4d6c | 4764 | } /* Dispatch by op code */ |
4c206c8f | 4765 | |
f00b37e7 | 4766 | dplane_ctx_fini(&ctx); |
4c206c8f MS |
4767 | ctx = dplane_ctx_dequeue(&ctxlist); |
4768 | } | |
4769 | ||
5709131c | 4770 | } while (1); |
7cdb1a84 MS |
4771 | } |
4772 | ||
4773 | /* | |
4774 | * Results are returned from the dataplane subsystem, in the context of | |
1bcea841 | 4775 | * the dataplane pthread. We enqueue the results here for processing by |
7cdb1a84 MS |
4776 | * the main thread later. |
4777 | */ | |
4c206c8f | 4778 | static int rib_dplane_results(struct dplane_ctx_q *ctxlist) |
7cdb1a84 MS |
4779 | { |
4780 | /* Take lock controlling queue of results */ | |
cb1991af | 4781 | frr_with_mutex (&dplane_mutex) { |
4c206c8f MS |
4782 | /* Enqueue context blocks */ |
4783 | dplane_ctx_list_append(&rib_dplane_q, ctxlist); | |
7cdb1a84 | 4784 | } |
7cdb1a84 | 4785 | |
4c206c8f | 4786 | /* Ensure event is signalled to zebra main pthread */ |
3801e764 | 4787 | thread_add_event(zrouter.master, rib_process_dplane_results, NULL, 0, |
7cdb1a84 MS |
4788 | &t_dplane); |
4789 | ||
5709131c | 4790 | return 0; |
7cdb1a84 MS |
4791 | } |
4792 | ||
eaa2716d SW |
4793 | /* |
4794 | * Ensure there are no empty slots in the route_info array. | |
4795 | * Every route type in zebra should be present there. | |
4796 | */ | |
4797 | static void check_route_info(void) | |
4798 | { | |
4799 | int len = array_size(route_info); | |
4800 | ||
4801 | /* | |
4802 | * ZEBRA_ROUTE_SYSTEM is special cased since | |
4803 | * its key is 0 anyway. | |
4804 | * | |
4805 | * ZEBRA_ROUTE_ALL is also ignored. | |
4806 | */ | |
4807 | for (int i = 0; i < len; i++) { | |
16d91fce DS |
4808 | assert(route_info[i].key >= ZEBRA_ROUTE_SYSTEM && |
4809 | route_info[i].key < ZEBRA_ROUTE_MAX); | |
8dc7a759 | 4810 | assert(route_info[i].meta_q_map < MQ_SIZE); |
eaa2716d SW |
4811 | } |
4812 | } | |
4813 | ||
718e3744 | 4814 | /* Routing information base initialize. */ |
d62a17ae | 4815 | void rib_init(void) |
718e3744 | 4816 | { |
eaa2716d SW |
4817 | check_route_info(); |
4818 | ||
2561d12e | 4819 | rib_queue_init(); |
7cdb1a84 MS |
4820 | |
4821 | /* Init dataplane, and register for results */ | |
4822 | pthread_mutex_init(&dplane_mutex, NULL); | |
4823 | TAILQ_INIT(&rib_dplane_q); | |
4c206c8f | 4824 | zebra_dplane_init(rib_dplane_results); |
718e3744 | 4825 | } |
0915bb0c AS |
4826 | |
4827 | /* | |
4828 | * vrf_id_get_next | |
4829 | * | |
4830 | * Get the first vrf id that is greater than the given vrf id if any. | |
4831 | * | |
2951a7a4 | 4832 | * Returns true if a vrf id was found, false otherwise. |
0915bb0c | 4833 | */ |
d62a17ae | 4834 | static inline int vrf_id_get_next(vrf_id_t vrf_id, vrf_id_t *next_id_p) |
0915bb0c | 4835 | { |
d62a17ae | 4836 | struct vrf *vrf; |
b72ede27 | 4837 | |
d62a17ae | 4838 | vrf = vrf_lookup_by_id(vrf_id); |
4839 | if (vrf) { | |
4840 | vrf = RB_NEXT(vrf_id_head, vrf); | |
4841 | if (vrf) { | |
4842 | *next_id_p = vrf->vrf_id; | |
4843 | return 1; | |
4844 | } | |
4845 | } | |
0915bb0c | 4846 | |
d62a17ae | 4847 | return 0; |
0915bb0c AS |
4848 | } |
4849 | ||
4850 | /* | |
4851 | * rib_tables_iter_next | |
4852 | * | |
4853 | * Returns the next table in the iteration. | |
4854 | */ | |
d62a17ae | 4855 | struct route_table *rib_tables_iter_next(rib_tables_iter_t *iter) |
4856 | { | |
4857 | struct route_table *table; | |
4858 | ||
4859 | /* | |
4860 | * Array that helps us go over all AFI/SAFI combinations via one | |
4861 | * index. | |
4862 | */ | |
2b64873d | 4863 | static const struct { |
d62a17ae | 4864 | afi_t afi; |
4865 | safi_t safi; | |
4866 | } afi_safis[] = { | |
4867 | {AFI_IP, SAFI_UNICAST}, {AFI_IP, SAFI_MULTICAST}, | |
4868 | {AFI_IP, SAFI_LABELED_UNICAST}, {AFI_IP6, SAFI_UNICAST}, | |
4869 | {AFI_IP6, SAFI_MULTICAST}, {AFI_IP6, SAFI_LABELED_UNICAST}, | |
4870 | }; | |
4871 | ||
4872 | table = NULL; | |
4873 | ||
4874 | switch (iter->state) { | |
4875 | ||
4876 | case RIB_TABLES_ITER_S_INIT: | |
4877 | iter->vrf_id = VRF_DEFAULT; | |
4878 | iter->afi_safi_ix = -1; | |
4879 | ||
4880 | /* Fall through */ | |
4881 | ||
4882 | case RIB_TABLES_ITER_S_ITERATING: | |
4883 | iter->afi_safi_ix++; | |
4884 | while (1) { | |
4885 | ||
4886 | while (iter->afi_safi_ix | |
7e3a1ec7 | 4887 | < (int)array_size(afi_safis)) { |
d62a17ae | 4888 | table = zebra_vrf_table( |
4889 | afi_safis[iter->afi_safi_ix].afi, | |
4890 | afi_safis[iter->afi_safi_ix].safi, | |
4891 | iter->vrf_id); | |
4892 | if (table) | |
4893 | break; | |
4894 | ||
4895 | iter->afi_safi_ix++; | |
4896 | } | |
4897 | ||
4898 | /* | |
4899 | * Found another table in this vrf. | |
4900 | */ | |
4901 | if (table) | |
4902 | break; | |
4903 | ||
4904 | /* | |
4905 | * Done with all tables in the current vrf, go to the | |
4906 | * next | |
4907 | * one. | |
4908 | */ | |
4909 | if (!vrf_id_get_next(iter->vrf_id, &iter->vrf_id)) | |
4910 | break; | |
4911 | ||
4912 | iter->afi_safi_ix = 0; | |
4913 | } | |
0915bb0c | 4914 | |
0915bb0c AS |
4915 | break; |
4916 | ||
d62a17ae | 4917 | case RIB_TABLES_ITER_S_DONE: |
4918 | return NULL; | |
0915bb0c AS |
4919 | } |
4920 | ||
d62a17ae | 4921 | if (table) |
4922 | iter->state = RIB_TABLES_ITER_S_ITERATING; | |
4923 | else | |
4924 | iter->state = RIB_TABLES_ITER_S_DONE; | |
0915bb0c | 4925 | |
d62a17ae | 4926 | return table; |
0915bb0c | 4927 | } |