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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
718e3744 | 2 | /* Routing Information Base. |
3 | * Copyright (C) 1997, 98, 99, 2001 Kunihiro Ishiguro | |
718e3744 | 4 | */ |
5 | ||
6 | #include <zebra.h> | |
7 | ||
718e3744 | 8 | #include "command.h" |
43e52561 QY |
9 | #include "if.h" |
10 | #include "linklist.h" | |
718e3744 | 11 | #include "log.h" |
43e52561 QY |
12 | #include "memory.h" |
13 | #include "mpls.h" | |
14 | #include "nexthop.h" | |
15 | #include "prefix.h" | |
7514fb77 PJ |
16 | #include "prefix.h" |
17 | #include "routemap.h" | |
43e52561 | 18 | #include "sockunion.h" |
05737783 | 19 | #include "srcdest_table.h" |
43e52561 | 20 | #include "table.h" |
24a58196 | 21 | #include "frrevent.h" |
43e52561 QY |
22 | #include "vrf.h" |
23 | #include "workqueue.h" | |
50d89650 | 24 | #include "nexthop_group_private.h" |
00dffa8c | 25 | #include "frr_pthread.h" |
61e6de9d | 26 | #include "printfrr.h" |
1247efcc | 27 | #include "frrscript.h" |
718e3744 | 28 | |
89272910 | 29 | #include "zebra/zebra_router.h" |
43e52561 QY |
30 | #include "zebra/connected.h" |
31 | #include "zebra/debug.h" | |
32 | #include "zebra/interface.h" | |
33 | #include "zebra/redistribute.h" | |
718e3744 | 34 | #include "zebra/rib.h" |
35 | #include "zebra/rt.h" | |
43e52561 QY |
36 | #include "zebra/zapi_msg.h" |
37 | #include "zebra/zebra_errors.h" | |
7c551956 | 38 | #include "zebra/zebra_ns.h" |
fb018d25 | 39 | #include "zebra/zebra_rnh.h" |
43e52561 QY |
40 | #include "zebra/zebra_routemap.h" |
41 | #include "zebra/zebra_vrf.h" | |
6134fd82 | 42 | #include "zebra/zebra_vxlan.h" |
7cdb1a84 MS |
43 | #include "zebra/zapi_msg.h" |
44 | #include "zebra/zebra_dplane.h" | |
32367e7a | 45 | #include "zebra/zebra_evpn_mh.h" |
1247efcc | 46 | #include "zebra/zebra_script.h" |
7cdb1a84 | 47 | |
224ccf29 DL |
48 | DEFINE_MGROUP(ZEBRA, "zebra"); |
49 | ||
50 | DEFINE_MTYPE(ZEBRA, RE, "Route Entry"); | |
51 | DEFINE_MTYPE_STATIC(ZEBRA, RIB_DEST, "RIB destination"); | |
2a99ab95 | 52 | DEFINE_MTYPE_STATIC(ZEBRA, RIB_UPDATE_CTX, "Rib update context object"); |
32367e7a | 53 | DEFINE_MTYPE_STATIC(ZEBRA, WQ_WRAPPER, "WQ wrapper"); |
2a99ab95 | 54 | |
7cdb1a84 MS |
55 | /* |
56 | * Event, list, and mutex for delivery of dataplane results | |
57 | */ | |
58 | static pthread_mutex_t dplane_mutex; | |
e6685141 | 59 | static struct event *t_dplane; |
ac96497c | 60 | static struct dplane_ctx_list_head rib_dplane_q; |
718e3744 | 61 | |
d62a17ae | 62 | DEFINE_HOOK(rib_update, (struct route_node * rn, const char *reason), |
8451921b | 63 | (rn, reason)); |
0d0f516c | 64 | DEFINE_HOOK(rib_shutdown, (struct route_node * rn), (rn)); |
65 | ||
4f8ea50c | 66 | |
81322b96 DS |
67 | /* |
68 | * Meta Q's specific names | |
69 | * | |
70 | * If you add something here ensure that you | |
71 | * change MQ_SIZE as well over in rib.h | |
72 | */ | |
014e732d DS |
73 | enum meta_queue_indexes { |
74 | META_QUEUE_NHG, | |
75 | META_QUEUE_EVPN, | |
d7ac4c4d | 76 | META_QUEUE_EARLY_ROUTE, |
53216dff | 77 | META_QUEUE_EARLY_LABEL, |
014e732d DS |
78 | META_QUEUE_CONNECTED, |
79 | META_QUEUE_KERNEL, | |
80 | META_QUEUE_STATIC, | |
81 | META_QUEUE_NOTBGP, | |
82 | META_QUEUE_BGP, | |
83 | META_QUEUE_OTHER, | |
81322b96 | 84 | META_QUEUE_GR_RUN, |
014e732d DS |
85 | }; |
86 | ||
718e3744 | 87 | /* Each route type's string and default distance value. */ |
d62a17ae | 88 | static const struct { |
89 | int key; | |
8dc7a759 | 90 | uint8_t distance; |
014e732d | 91 | enum meta_queue_indexes meta_q_map; |
d62a17ae | 92 | } route_info[ZEBRA_ROUTE_MAX] = { |
3d55a4ef DS |
93 | [ZEBRA_ROUTE_NHG] = |
94 | {ZEBRA_ROUTE_NHG, | |
95 | ZEBRA_MAX_DISTANCE_DEFAULT /* Unneeded for nhg's */, | |
96 | META_QUEUE_NHG}, | |
97 | [ZEBRA_ROUTE_SYSTEM] = {ZEBRA_ROUTE_SYSTEM, | |
98 | ZEBRA_KERNEL_DISTANCE_DEFAULT, | |
99 | META_QUEUE_KERNEL}, | |
100 | [ZEBRA_ROUTE_KERNEL] = {ZEBRA_ROUTE_KERNEL, | |
101 | ZEBRA_KERNEL_DISTANCE_DEFAULT, | |
102 | META_QUEUE_KERNEL}, | |
103 | [ZEBRA_ROUTE_CONNECT] = {ZEBRA_ROUTE_CONNECT, | |
104 | ZEBRA_CONNECT_DISTANCE_DEFAULT, | |
105 | META_QUEUE_CONNECTED}, | |
106 | [ZEBRA_ROUTE_STATIC] = {ZEBRA_ROUTE_STATIC, | |
107 | ZEBRA_STATIC_DISTANCE_DEFAULT, | |
108 | META_QUEUE_STATIC}, | |
109 | [ZEBRA_ROUTE_RIP] = {ZEBRA_ROUTE_RIP, ZEBRA_RIP_DISTANCE_DEFAULT, | |
110 | META_QUEUE_NOTBGP}, | |
111 | [ZEBRA_ROUTE_RIPNG] = {ZEBRA_ROUTE_RIPNG, ZEBRA_RIP_DISTANCE_DEFAULT, | |
112 | META_QUEUE_NOTBGP}, | |
113 | [ZEBRA_ROUTE_OSPF] = {ZEBRA_ROUTE_OSPF, ZEBRA_OSPF_DISTANCE_DEFAULT, | |
114 | META_QUEUE_NOTBGP}, | |
115 | [ZEBRA_ROUTE_OSPF6] = {ZEBRA_ROUTE_OSPF6, ZEBRA_OSPF6_DISTANCE_DEFAULT, | |
116 | META_QUEUE_NOTBGP}, | |
117 | [ZEBRA_ROUTE_ISIS] = {ZEBRA_ROUTE_ISIS, ZEBRA_ISIS_DISTANCE_DEFAULT, | |
118 | META_QUEUE_NOTBGP}, | |
119 | [ZEBRA_ROUTE_BGP] = {ZEBRA_ROUTE_BGP, | |
120 | ZEBRA_EBGP_DISTANCE_DEFAULT /* IBGP is 200. */, | |
014e732d | 121 | META_QUEUE_BGP}, |
3d55a4ef DS |
122 | [ZEBRA_ROUTE_PIM] = {ZEBRA_ROUTE_PIM, ZEBRA_MAX_DISTANCE_DEFAULT, |
123 | META_QUEUE_OTHER}, | |
124 | [ZEBRA_ROUTE_EIGRP] = {ZEBRA_ROUTE_EIGRP, ZEBRA_EIGRP_DISTANCE_DEFAULT, | |
125 | META_QUEUE_NOTBGP}, | |
126 | [ZEBRA_ROUTE_NHRP] = {ZEBRA_ROUTE_NHRP, ZEBRA_NHRP_DISTANCE_DEFAULT, | |
127 | META_QUEUE_NOTBGP}, | |
128 | [ZEBRA_ROUTE_HSLS] = {ZEBRA_ROUTE_HSLS, ZEBRA_MAX_DISTANCE_DEFAULT, | |
129 | META_QUEUE_OTHER}, | |
130 | [ZEBRA_ROUTE_OLSR] = {ZEBRA_ROUTE_OLSR, ZEBRA_MAX_DISTANCE_DEFAULT, | |
131 | META_QUEUE_OTHER}, | |
8b6a9cca | 132 | [ZEBRA_ROUTE_TABLE] = {ZEBRA_ROUTE_TABLE, ZEBRA_TABLE_DISTANCE_DEFAULT, META_QUEUE_STATIC}, |
3d55a4ef DS |
133 | [ZEBRA_ROUTE_LDP] = {ZEBRA_ROUTE_LDP, ZEBRA_LDP_DISTANCE_DEFAULT, |
134 | META_QUEUE_OTHER}, | |
135 | [ZEBRA_ROUTE_VNC] = {ZEBRA_ROUTE_VNC, ZEBRA_EBGP_DISTANCE_DEFAULT, | |
136 | META_QUEUE_BGP}, | |
137 | [ZEBRA_ROUTE_VNC_DIRECT] = {ZEBRA_ROUTE_VNC_DIRECT, | |
138 | ZEBRA_EBGP_DISTANCE_DEFAULT, | |
139 | META_QUEUE_BGP}, | |
140 | [ZEBRA_ROUTE_VNC_DIRECT_RH] = {ZEBRA_ROUTE_VNC_DIRECT_RH, | |
141 | ZEBRA_EBGP_DISTANCE_DEFAULT, | |
014e732d | 142 | META_QUEUE_BGP}, |
3d55a4ef DS |
143 | [ZEBRA_ROUTE_BGP_DIRECT] = {ZEBRA_ROUTE_BGP_DIRECT, |
144 | ZEBRA_EBGP_DISTANCE_DEFAULT, | |
145 | META_QUEUE_BGP}, | |
146 | [ZEBRA_ROUTE_BGP_DIRECT_EXT] = {ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
147 | ZEBRA_EBGP_DISTANCE_DEFAULT, | |
014e732d | 148 | META_QUEUE_BGP}, |
3d55a4ef DS |
149 | [ZEBRA_ROUTE_BABEL] = {ZEBRA_ROUTE_BABEL, ZEBRA_BABEL_DISTANCE_DEFAULT, |
150 | META_QUEUE_NOTBGP}, | |
151 | [ZEBRA_ROUTE_SHARP] = {ZEBRA_ROUTE_SHARP, ZEBRA_SHARP_DISTANCE_DEFAULT, | |
152 | META_QUEUE_OTHER}, | |
153 | [ZEBRA_ROUTE_PBR] = {ZEBRA_ROUTE_PBR, ZEBRA_PBR_DISTANCE_DEFAULT, | |
154 | META_QUEUE_OTHER}, | |
155 | [ZEBRA_ROUTE_BFD] = {ZEBRA_ROUTE_BFD, ZEBRA_MAX_DISTANCE_DEFAULT, | |
156 | META_QUEUE_OTHER}, | |
157 | [ZEBRA_ROUTE_OPENFABRIC] = {ZEBRA_ROUTE_OPENFABRIC, | |
158 | ZEBRA_OPENFABRIC_DISTANCE_DEFAULT, | |
014e732d | 159 | META_QUEUE_NOTBGP}, |
3d55a4ef DS |
160 | [ZEBRA_ROUTE_VRRP] = {ZEBRA_ROUTE_VRRP, ZEBRA_MAX_DISTANCE_DEFAULT, |
161 | META_QUEUE_OTHER}, | |
162 | [ZEBRA_ROUTE_SRTE] = {ZEBRA_ROUTE_SRTE, ZEBRA_MAX_DISTANCE_DEFAULT, | |
163 | META_QUEUE_OTHER}, | |
164 | [ZEBRA_ROUTE_ALL] = {ZEBRA_ROUTE_ALL, ZEBRA_MAX_DISTANCE_DEFAULT, | |
165 | META_QUEUE_OTHER}, | |
d6abd8b0 | 166 | /* Any new route type added to zebra, should be mirrored here */ |
c710b277 | 167 | |
d62a17ae | 168 | /* no entry/default: 150 */ |
718e3744 | 169 | }; |
6b0655a2 | 170 | |
04bec7b2 MS |
171 | /* Wrapper struct for nhg workqueue items; a 'ctx' is an incoming update |
172 | * from the OS, and an 'nhe' is a nhe update. | |
173 | */ | |
174 | struct wq_nhg_wrapper { | |
175 | int type; | |
176 | union { | |
177 | struct nhg_ctx *ctx; | |
178 | struct nhg_hash_entry *nhe; | |
179 | } u; | |
180 | }; | |
181 | ||
182 | #define WQ_NHG_WRAPPER_TYPE_CTX 0x01 | |
183 | #define WQ_NHG_WRAPPER_TYPE_NHG 0x02 | |
184 | ||
32367e7a MS |
185 | /* Wrapper structs for evpn/vxlan workqueue items. */ |
186 | struct wq_evpn_wrapper { | |
187 | int type; | |
188 | bool add_p; | |
189 | vrf_id_t vrf_id; | |
190 | bool esr_rxed; | |
191 | uint8_t df_alg; | |
192 | uint16_t df_pref; | |
7f7e49d1 MS |
193 | uint32_t flags; |
194 | uint32_t seq; | |
32367e7a | 195 | esi_t esi; |
7f7e49d1 | 196 | vni_t vni; |
32367e7a | 197 | struct ipaddr ip; |
7f7e49d1 | 198 | struct ethaddr macaddr; |
32367e7a | 199 | struct prefix prefix; |
7f7e49d1 | 200 | struct in_addr vtep_ip; |
32367e7a MS |
201 | }; |
202 | ||
7f7e49d1 MS |
203 | #define WQ_EVPN_WRAPPER_TYPE_VRFROUTE 0x01 |
204 | #define WQ_EVPN_WRAPPER_TYPE_REM_ES 0x02 | |
205 | #define WQ_EVPN_WRAPPER_TYPE_REM_MACIP 0x03 | |
7e5b0b2b | 206 | #define WQ_EVPN_WRAPPER_TYPE_REM_VTEP 0x04 |
32367e7a | 207 | |
53216dff DS |
208 | enum wq_label_types { |
209 | WQ_LABEL_FTN_UNINSTALL, | |
210 | WQ_LABEL_LABELS_PROCESS, | |
211 | }; | |
212 | ||
213 | struct wq_label_wrapper { | |
214 | enum wq_label_types type; | |
215 | vrf_id_t vrf_id; | |
216 | ||
217 | struct prefix p; | |
218 | enum lsp_types_t ltype; | |
219 | uint8_t route_type; | |
220 | uint8_t route_instance; | |
221 | ||
222 | bool add_p; | |
223 | struct zapi_labels zl; | |
224 | ||
225 | int afi; | |
226 | }; | |
227 | ||
d7ac4c4d DS |
228 | static void rib_addnode(struct route_node *rn, struct route_entry *re, |
229 | int process); | |
230 | ||
9d75e309 DL |
231 | /* %pRN is already a printer for route_nodes that just prints the prefix */ |
232 | #ifdef _FRR_ATTRIBUTE_PRINTFRR | |
233 | #pragma FRR printfrr_ext "%pZN" (struct route_node *) | |
234 | #endif | |
235 | ||
014e732d | 236 | static const char *subqueue2str(enum meta_queue_indexes index) |
7a96ccc7 DS |
237 | { |
238 | switch (index) { | |
4bbbd1f6 | 239 | case META_QUEUE_NHG: |
7a96ccc7 | 240 | return "NHG Objects"; |
4bbbd1f6 | 241 | case META_QUEUE_EVPN: |
7a96ccc7 | 242 | return "EVPN/VxLan Objects"; |
d7ac4c4d DS |
243 | case META_QUEUE_EARLY_ROUTE: |
244 | return "Early Route Processing"; | |
53216dff DS |
245 | case META_QUEUE_EARLY_LABEL: |
246 | return "Early Label Handling"; | |
014e732d | 247 | case META_QUEUE_CONNECTED: |
7a96ccc7 | 248 | return "Connected Routes"; |
014e732d | 249 | case META_QUEUE_KERNEL: |
7a96ccc7 | 250 | return "Kernel Routes"; |
014e732d | 251 | case META_QUEUE_STATIC: |
7a96ccc7 | 252 | return "Static Routes"; |
014e732d | 253 | case META_QUEUE_NOTBGP: |
7a96ccc7 | 254 | return "RIP/OSPF/ISIS/EIGRP/NHRP Routes"; |
014e732d | 255 | case META_QUEUE_BGP: |
7a96ccc7 | 256 | return "BGP Routes"; |
014e732d | 257 | case META_QUEUE_OTHER: |
7a96ccc7 | 258 | return "Other Routes"; |
81322b96 DS |
259 | case META_QUEUE_GR_RUN: |
260 | return "Graceful Restart"; | |
7a96ccc7 DS |
261 | } |
262 | ||
263 | return "Unknown"; | |
264 | } | |
265 | ||
9d75e309 DL |
266 | printfrr_ext_autoreg_p("ZN", printfrr_zebra_node); |
267 | static ssize_t printfrr_zebra_node(struct fbuf *buf, struct printfrr_eargs *ea, | |
268 | const void *ptr) | |
2263a412 | 269 | { |
9d75e309 DL |
270 | struct route_node *rn = (struct route_node *)ptr; |
271 | ssize_t rv = 0; | |
272 | ||
273 | /* just the table number? */ | |
274 | if (ea->fmt[0] == 't') { | |
275 | rib_dest_t *dest; | |
c2c02b76 DS |
276 | struct route_entry *re = NULL; |
277 | ||
9d75e309 | 278 | ea->fmt++; |
cb653491 | 279 | |
9d75e309 DL |
280 | if (!rn) |
281 | return bputch(buf, '!'); | |
c2c02b76 DS |
282 | |
283 | dest = rib_dest_from_rnode(rn); | |
284 | if (dest) | |
285 | re = re_list_first(&dest->routes); | |
286 | if (re) | |
9d75e309 DL |
287 | rv += bprintfrr(buf, "%u", re->table); |
288 | else | |
289 | rv += bputch(buf, '?'); | |
290 | ||
d62a17ae | 291 | } else { |
9d75e309 DL |
292 | char cbuf[PREFIX_STRLEN * 2 + 6]; |
293 | struct rib_table_info *info; | |
294 | ||
295 | if (!rn) | |
296 | return bputs(buf, "{(route_node *) NULL}"); | |
2263a412 | 297 | |
9d75e309 DL |
298 | srcdest_rnode2str(rn, cbuf, sizeof(cbuf)); |
299 | rv += bputs(buf, cbuf); | |
300 | ||
301 | info = srcdest_rnode_table_info(rn); | |
302 | if (info->safi == SAFI_MULTICAST) | |
303 | rv += bputs(buf, " (MRIB)"); | |
304 | } | |
305 | return rv; | |
2263a412 DL |
306 | } |
307 | ||
9d75e309 DL |
308 | #define rnode_debug(node, vrf_id, msg, ...) \ |
309 | zlog_debug("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
310 | ##__VA_ARGS__) | |
311 | ||
312 | #define rnode_info(node, vrf_id, msg, ...) \ | |
313 | zlog_info("%s: (%u:%pZNt):%pZN: " msg, __func__, vrf_id, node, node, \ | |
314 | ##__VA_ARGS__) | |
315 | ||
61e6de9d DS |
316 | static char *_dump_re_status(const struct route_entry *re, char *buf, |
317 | size_t len) | |
318 | { | |
319 | if (re->status == 0) { | |
320 | snprintfrr(buf, len, "None "); | |
321 | return buf; | |
322 | } | |
323 | ||
324 | snprintfrr( | |
8d4665aa | 325 | buf, len, "%s%s%s%s%s%s%s%s", |
61e6de9d DS |
326 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED) ? "Removed " : "", |
327 | CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED) ? "Changed " : "", | |
328 | CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED) | |
329 | ? "Label Changed " | |
330 | : "", | |
331 | CHECK_FLAG(re->status, ROUTE_ENTRY_QUEUED) ? "Queued " : "", | |
8d4665aa DS |
332 | CHECK_FLAG(re->status, ROUTE_ENTRY_ROUTE_REPLACING) |
333 | ? "Replacing" | |
334 | : "", | |
61e6de9d DS |
335 | CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) ? "Installed " |
336 | : "", | |
337 | CHECK_FLAG(re->status, ROUTE_ENTRY_FAILED) ? "Failed " : "", | |
338 | CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG) ? "Fib NHG " | |
339 | : ""); | |
340 | return buf; | |
341 | } | |
342 | ||
fd289fc8 | 343 | uint8_t route_distance(int type) |
40c7bdb0 | 344 | { |
fd289fc8 | 345 | uint8_t distance; |
40c7bdb0 | 346 | |
d62a17ae | 347 | if ((unsigned)type >= array_size(route_info)) |
348 | distance = 150; | |
349 | else | |
350 | distance = route_info[type].distance; | |
40c7bdb0 | 351 | |
d62a17ae | 352 | return distance; |
40c7bdb0 | 353 | } |
354 | ||
d7c0a89a | 355 | int is_zebra_valid_kernel_table(uint32_t table_id) |
7a4bb9c5 | 356 | { |
8f500a1c | 357 | #ifdef linux |
d62a17ae | 358 | if ((table_id == RT_TABLE_UNSPEC) || (table_id == RT_TABLE_LOCAL) |
359 | || (table_id == RT_TABLE_COMPAT)) | |
360 | return 0; | |
8f500a1c RW |
361 | #endif |
362 | ||
d62a17ae | 363 | return 1; |
7a4bb9c5 DS |
364 | } |
365 | ||
d7c0a89a | 366 | int is_zebra_main_routing_table(uint32_t table_id) |
7a4bb9c5 | 367 | { |
c447ad08 | 368 | if (table_id == RT_TABLE_MAIN) |
d62a17ae | 369 | return 1; |
370 | return 0; | |
7a4bb9c5 DS |
371 | } |
372 | ||
86391e56 | 373 | int zebra_check_addr(const struct prefix *p) |
0aabccc0 | 374 | { |
d62a17ae | 375 | if (p->family == AF_INET) { |
d7c0a89a | 376 | uint32_t addr; |
0aabccc0 | 377 | |
d62a17ae | 378 | addr = p->u.prefix4.s_addr; |
379 | addr = ntohl(addr); | |
0aabccc0 | 380 | |
d62a17ae | 381 | if (IPV4_NET127(addr) || IN_CLASSD(addr) |
382 | || IPV4_LINKLOCAL(addr)) | |
383 | return 0; | |
384 | } | |
385 | if (p->family == AF_INET6) { | |
386 | if (IN6_IS_ADDR_LOOPBACK(&p->u.prefix6)) | |
387 | return 0; | |
388 | if (IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
389 | return 0; | |
390 | } | |
391 | return 1; | |
0aabccc0 DD |
392 | } |
393 | ||
5463ce26 MS |
394 | static void route_entry_attach_ref(struct route_entry *re, |
395 | struct nhg_hash_entry *new) | |
718e3744 | 396 | { |
0eb97b86 | 397 | re->nhe = new; |
5463ce26 | 398 | re->nhe_id = new->id; |
002930f7 | 399 | re->nhe_installed_id = 0; |
718e3744 | 400 | |
5463ce26 | 401 | zebra_nhg_increment_ref(new); |
718e3744 | 402 | } |
403 | ||
002930f7 | 404 | /* Replace (if 'new_nhghe') or clear (if that's NULL) an re's nhe. */ |
cd7108ba EDP |
405 | int route_entry_update_nhe(struct route_entry *re, |
406 | struct nhg_hash_entry *new_nhghe) | |
718e3744 | 407 | { |
5463ce26 | 408 | int ret = 0; |
002930f7 | 409 | struct nhg_hash_entry *old_nhg = NULL; |
718e3744 | 410 | |
cd7108ba | 411 | if (new_nhghe == NULL) { |
002930f7 MS |
412 | old_nhg = re->nhe; |
413 | ||
414 | re->nhe_id = 0; | |
415 | re->nhe_installed_id = 0; | |
c415d895 | 416 | re->nhe = NULL; |
5463ce26 MS |
417 | goto done; |
418 | } | |
718e3744 | 419 | |
1f655680 | 420 | if ((re->nhe_id != 0) && re->nhe && (re->nhe != new_nhghe)) { |
002930f7 MS |
421 | /* Capture previous nhg, if any */ |
422 | old_nhg = re->nhe; | |
718e3744 | 423 | |
cd7108ba | 424 | route_entry_attach_ref(re, new_nhghe); |
84a89a8d | 425 | } else if (!re->nhe) |
5463ce26 | 426 | /* This is the first time it's being attached */ |
cd7108ba | 427 | route_entry_attach_ref(re, new_nhghe); |
595db7f1 | 428 | |
5463ce26 | 429 | done: |
002930f7 MS |
430 | /* Detach / deref previous nhg */ |
431 | if (old_nhg) | |
432 | zebra_nhg_decrement_ref(old_nhg); | |
433 | ||
5463ce26 | 434 | return ret; |
595db7f1 | 435 | } |
436 | ||
2e8db20d EDP |
437 | void rib_handle_nhg_replace(struct nhg_hash_entry *old_entry, |
438 | struct nhg_hash_entry *new_entry) | |
1f655680 SW |
439 | { |
440 | struct zebra_router_table *zrt; | |
441 | struct route_node *rn; | |
442 | struct route_entry *re, *next; | |
443 | ||
444 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || IS_ZEBRA_DEBUG_NHG_DETAIL) | |
445 | zlog_debug("%s: replacing routes nhe (%u) OLD %p NEW %p", | |
2e8db20d | 446 | __func__, new_entry->id, new_entry, old_entry); |
1f655680 SW |
447 | |
448 | /* We have to do them ALL */ | |
449 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) { | |
450 | for (rn = route_top(zrt->table); rn; | |
451 | rn = srcdest_route_next(rn)) { | |
452 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
2e8db20d EDP |
453 | if (re->nhe && re->nhe == old_entry) |
454 | route_entry_update_nhe(re, new_entry); | |
1f655680 SW |
455 | } |
456 | } | |
457 | } | |
458 | } | |
459 | ||
d62a17ae | 460 | struct route_entry *rib_match(afi_t afi, safi_t safi, vrf_id_t vrf_id, |
bc77c3bb MS |
461 | const union g_addr *addr, |
462 | struct route_node **rn_out) | |
d62a17ae | 463 | { |
464 | struct prefix p; | |
465 | struct route_table *table; | |
466 | struct route_node *rn; | |
5f7a4718 | 467 | struct route_entry *match = NULL; |
d62a17ae | 468 | |
469 | /* Lookup table. */ | |
470 | table = zebra_vrf_table(afi, safi, vrf_id); | |
471 | if (!table) | |
472 | return 0; | |
473 | ||
6006b807 | 474 | memset(&p, 0, sizeof(p)); |
d62a17ae | 475 | p.family = afi; |
476 | if (afi == AFI_IP) { | |
477 | p.u.prefix4 = addr->ipv4; | |
936fbaef | 478 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 479 | } else { |
480 | p.u.prefix6 = addr->ipv6; | |
f4d81e55 | 481 | p.prefixlen = IPV6_MAX_BITLEN; |
d62a17ae | 482 | } |
718e3744 | 483 | |
c4efd0f4 | 484 | rn = route_node_match(table, &p); |
718e3744 | 485 | |
d62a17ae | 486 | while (rn) { |
5f7a4718 DS |
487 | rib_dest_t *dest; |
488 | ||
d62a17ae | 489 | route_unlock_node(rn); |
718e3744 | 490 | |
5f7a4718 | 491 | dest = rib_dest_from_rnode(rn); |
996c9314 LB |
492 | if (dest && dest->selected_fib |
493 | && !CHECK_FLAG(dest->selected_fib->status, | |
494 | ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 495 | match = dest->selected_fib; |
718e3744 | 496 | |
d62a17ae | 497 | /* If there is no selected route or matched route is EGP, go up |
498 | tree. */ | |
499 | if (!match) { | |
500 | do { | |
501 | rn = rn->parent; | |
502 | } while (rn && rn->info == NULL); | |
503 | if (rn) | |
504 | route_lock_node(rn); | |
505 | } else { | |
506 | if (match->type != ZEBRA_ROUTE_CONNECT) { | |
677c1dd5 DS |
507 | if (!CHECK_FLAG(match->status, |
508 | ROUTE_ENTRY_INSTALLED)) | |
d62a17ae | 509 | return NULL; |
510 | } | |
511 | ||
512 | if (rn_out) | |
513 | *rn_out = rn; | |
514 | return match; | |
515 | } | |
16814f96 | 516 | } |
d62a17ae | 517 | return NULL; |
518 | } | |
519 | ||
312e29b0 DS |
520 | struct route_entry *rib_match_multicast(afi_t afi, vrf_id_t vrf_id, |
521 | union g_addr *gaddr, | |
522 | struct route_node **rn_out) | |
d62a17ae | 523 | { |
524 | struct route_entry *re = NULL, *mre = NULL, *ure = NULL; | |
525 | struct route_node *m_rn = NULL, *u_rn = NULL; | |
d62a17ae | 526 | |
526052fb | 527 | switch (zrouter.ipv4_multicast_mode) { |
d62a17ae | 528 | case MCAST_MRIB_ONLY: |
312e29b0 | 529 | return rib_match(afi, SAFI_MULTICAST, vrf_id, gaddr, rn_out); |
d62a17ae | 530 | case MCAST_URIB_ONLY: |
312e29b0 | 531 | return rib_match(afi, SAFI_UNICAST, vrf_id, gaddr, rn_out); |
d62a17ae | 532 | case MCAST_NO_CONFIG: |
533 | case MCAST_MIX_MRIB_FIRST: | |
312e29b0 | 534 | re = mre = rib_match(afi, SAFI_MULTICAST, vrf_id, gaddr, &m_rn); |
d62a17ae | 535 | if (!mre) |
312e29b0 DS |
536 | re = ure = rib_match(afi, SAFI_UNICAST, vrf_id, gaddr, |
537 | &u_rn); | |
d62a17ae | 538 | break; |
539 | case MCAST_MIX_DISTANCE: | |
312e29b0 DS |
540 | mre = rib_match(afi, SAFI_MULTICAST, vrf_id, gaddr, &m_rn); |
541 | ure = rib_match(afi, SAFI_UNICAST, vrf_id, gaddr, &u_rn); | |
d62a17ae | 542 | if (mre && ure) |
543 | re = ure->distance < mre->distance ? ure : mre; | |
544 | else if (mre) | |
545 | re = mre; | |
546 | else if (ure) | |
547 | re = ure; | |
548 | break; | |
549 | case MCAST_MIX_PFXLEN: | |
312e29b0 DS |
550 | mre = rib_match(afi, SAFI_MULTICAST, vrf_id, gaddr, &m_rn); |
551 | ure = rib_match(afi, SAFI_UNICAST, vrf_id, gaddr, &u_rn); | |
d62a17ae | 552 | if (mre && ure) |
553 | re = u_rn->p.prefixlen > m_rn->p.prefixlen ? ure : mre; | |
554 | else if (mre) | |
555 | re = mre; | |
556 | else if (ure) | |
557 | re = ure; | |
558 | break; | |
718e3744 | 559 | } |
33550aa8 | 560 | |
d62a17ae | 561 | if (rn_out) |
562 | *rn_out = (re == mre) ? m_rn : u_rn; | |
718e3744 | 563 | |
d62a17ae | 564 | if (IS_ZEBRA_DEBUG_RIB) { |
565 | char buf[BUFSIZ]; | |
312e29b0 DS |
566 | inet_ntop(afi == AFI_IP ? AF_INET : AF_INET6, gaddr, buf, |
567 | BUFSIZ); | |
4623d897 | 568 | |
312e29b0 DS |
569 | zlog_debug("%s: %s: %pRN vrf: %s(%u) found %s, using %s", |
570 | __func__, buf, (re == mre) ? m_rn : u_rn, | |
571 | vrf_id_to_name(vrf_id), vrf_id, | |
d62a17ae | 572 | mre ? (ure ? "MRIB+URIB" : "MRIB") |
573 | : ure ? "URIB" : "nothing", | |
574 | re == ure ? "URIB" : re == mre ? "MRIB" : "none"); | |
575 | } | |
576 | return re; | |
4623d897 | 577 | } |
425fd200 | 578 | |
d62a17ae | 579 | struct route_entry *rib_lookup_ipv4(struct prefix_ipv4 *p, vrf_id_t vrf_id) |
718e3744 | 580 | { |
d62a17ae | 581 | struct route_table *table; |
582 | struct route_node *rn; | |
5f7a4718 | 583 | struct route_entry *match = NULL; |
5f7a4718 | 584 | rib_dest_t *dest; |
718e3744 | 585 | |
d62a17ae | 586 | /* Lookup table. */ |
587 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, vrf_id); | |
588 | if (!table) | |
589 | return 0; | |
718e3744 | 590 | |
d62a17ae | 591 | rn = route_node_lookup(table, (struct prefix *)p); |
718e3744 | 592 | |
d62a17ae | 593 | /* No route for this prefix. */ |
594 | if (!rn) | |
595 | return NULL; | |
718e3744 | 596 | |
d62a17ae | 597 | /* Unlock node. */ |
598 | route_unlock_node(rn); | |
5f7a4718 | 599 | dest = rib_dest_from_rnode(rn); |
718e3744 | 600 | |
996c9314 LB |
601 | if (dest && dest->selected_fib |
602 | && !CHECK_FLAG(dest->selected_fib->status, ROUTE_ENTRY_REMOVED)) | |
5f7a4718 | 603 | match = dest->selected_fib; |
718e3744 | 604 | |
d62a17ae | 605 | if (!match) |
606 | return NULL; | |
718e3744 | 607 | |
d62a17ae | 608 | if (match->type == ZEBRA_ROUTE_CONNECT) |
609 | return match; | |
f9e1b38e | 610 | |
677c1dd5 DS |
611 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_INSTALLED)) |
612 | return match; | |
718e3744 | 613 | |
d62a17ae | 614 | return NULL; |
718e3744 | 615 | } |
616 | ||
a64448ba DS |
617 | /* |
618 | * Is this RIB labeled-unicast? It must be of type BGP and all paths | |
619 | * (nexthops) must have a label. | |
620 | */ | |
d62a17ae | 621 | int zebra_rib_labeled_unicast(struct route_entry *re) |
a64448ba | 622 | { |
d62a17ae | 623 | struct nexthop *nexthop = NULL; |
a64448ba | 624 | |
d62a17ae | 625 | if (re->type != ZEBRA_ROUTE_BGP) |
626 | return 0; | |
a64448ba | 627 | |
c415d895 | 628 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 629 | if (!nexthop->nh_label || !nexthop->nh_label->num_labels) |
630 | return 0; | |
6b0655a2 | 631 | |
d62a17ae | 632 | return 1; |
a64448ba | 633 | } |
718e3744 | 634 | |
6ae24471 DS |
635 | /* Update flag indicates whether this is a "replace" or not. Currently, this |
636 | * is only used for IPv4. | |
637 | */ | |
0c555cc6 DS |
638 | void rib_install_kernel(struct route_node *rn, struct route_entry *re, |
639 | struct route_entry *old) | |
718e3744 | 640 | { |
d62a17ae | 641 | struct nexthop *nexthop; |
630d5962 | 642 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
9a7d1e74 | 643 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); |
97f5b441 MS |
644 | const struct prefix *p, *src_p; |
645 | enum zebra_dplane_result ret; | |
646 | ||
647 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
718e3744 | 648 | |
d62a17ae | 649 | srcdest_rnode_prefixes(rn, &p, &src_p); |
416ec78d | 650 | |
d62a17ae | 651 | if (info->safi != SAFI_UNICAST) { |
c415d895 | 652 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d62a17ae | 653 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 654 | return; |
d62a17ae | 655 | } |
718e3744 | 656 | |
9ef49038 | 657 | |
8dfbc657 SW |
658 | /* |
659 | * Install the resolved nexthop object first. | |
660 | */ | |
c415d895 | 661 | zebra_nhg_install_kernel(re->nhe); |
8dfbc657 | 662 | |
2063a814 DS |
663 | /* |
664 | * If this is a replace to a new RE let the originator of the RE | |
665 | * know that they've lost | |
666 | */ | |
9a9f8926 | 667 | if (old && (old != re) && (old->type != re->type)) |
a7704e1b | 668 | zsend_route_notify_owner(rn, old, ZAPI_ROUTE_BETTER_ADMIN_WON, |
77b38a4a | 669 | info->afi, info->safi); |
25b9cb0c | 670 | |
97f5b441 MS |
671 | /* Update fib selection */ |
672 | dest->selected_fib = re; | |
673 | ||
d62a17ae | 674 | /* |
675 | * Make sure we update the FPM any time we send new information to | |
676 | * the kernel. | |
677 | */ | |
678 | hook_call(rib_update, rn, "installing in kernel"); | |
97f5b441 MS |
679 | |
680 | /* Send add or update */ | |
8263d1d0 | 681 | if (old) |
97f5b441 | 682 | ret = dplane_route_update(rn, re, old); |
5709131c | 683 | else |
97f5b441 | 684 | ret = dplane_route_add(rn, re); |
97f5b441 MS |
685 | |
686 | switch (ret) { | |
ea1c14f6 | 687 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
60f98b23 | 688 | SET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
efe6c026 MS |
689 | |
690 | if (old) { | |
60f98b23 | 691 | SET_FLAG(old->status, ROUTE_ENTRY_QUEUED); |
8d4665aa | 692 | SET_FLAG(re->status, ROUTE_ENTRY_ROUTE_REPLACING); |
efe6c026 MS |
693 | |
694 | /* Free old FIB nexthop group */ | |
7483dcbe | 695 | UNSET_FLAG(old->status, ROUTE_ENTRY_USE_FIB_NHG); |
efe6c026 MS |
696 | if (old->fib_ng.nexthop) { |
697 | nexthops_free(old->fib_ng.nexthop); | |
698 | old->fib_ng.nexthop = NULL; | |
699 | } | |
efe6c026 MS |
700 | } |
701 | ||
97f5b441 MS |
702 | if (zvrf) |
703 | zvrf->installs_queued++; | |
1e885672 | 704 | break; |
ea1c14f6 | 705 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 | 706 | { |
97f5b441 | 707 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, |
e658173a DS |
708 | "%u:%u:%pRN: Failed to enqueue dataplane install", |
709 | re->vrf_id, re->table, rn); | |
1e885672 | 710 | break; |
97f5b441 | 711 | } |
ea1c14f6 | 712 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
97f5b441 MS |
713 | if (zvrf) |
714 | zvrf->installs++; | |
1e885672 DS |
715 | break; |
716 | } | |
d62a17ae | 717 | |
0c555cc6 | 718 | return; |
718e3744 | 719 | } |
720 | ||
721 | /* Uninstall the route from kernel. */ | |
0c555cc6 | 722 | void rib_uninstall_kernel(struct route_node *rn, struct route_entry *re) |
718e3744 | 723 | { |
d62a17ae | 724 | struct nexthop *nexthop; |
630d5962 | 725 | struct rib_table_info *info = srcdest_rnode_table_info(rn); |
9a7d1e74 | 726 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); |
05737783 | 727 | |
d62a17ae | 728 | if (info->safi != SAFI_UNICAST) { |
677c1dd5 | 729 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 730 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
d6792f9d | 731 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
0c555cc6 | 732 | return; |
d62a17ae | 733 | } |
416ec78d | 734 | |
d62a17ae | 735 | /* |
736 | * Make sure we update the FPM any time we send new information to | |
97f5b441 | 737 | * the dataplane. |
d62a17ae | 738 | */ |
739 | hook_call(rib_update, rn, "uninstalling from kernel"); | |
97f5b441 MS |
740 | |
741 | switch (dplane_route_delete(rn, re)) { | |
ea1c14f6 | 742 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
97f5b441 MS |
743 | if (zvrf) |
744 | zvrf->removals_queued++; | |
1e885672 | 745 | break; |
ea1c14f6 | 746 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
97f5b441 | 747 | flog_err(EC_ZEBRA_DP_INSTALL_FAIL, |
e658173a DS |
748 | "%u:%pRN: Failed to enqueue dataplane uninstall", |
749 | re->vrf_id, rn); | |
1e885672 | 750 | break; |
ea1c14f6 | 751 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
1e885672 DS |
752 | if (zvrf) |
753 | zvrf->removals++; | |
754 | break; | |
755 | } | |
718e3744 | 756 | |
0c555cc6 | 757 | return; |
718e3744 | 758 | } |
759 | ||
9fd92e3c AS |
760 | /* |
761 | * rib_can_delete_dest | |
762 | * | |
2951a7a4 | 763 | * Returns true if the given dest can be deleted from the table. |
9fd92e3c | 764 | */ |
d62a17ae | 765 | static int rib_can_delete_dest(rib_dest_t *dest) |
9fd92e3c | 766 | { |
045207e2 | 767 | if (re_list_first(&dest->routes)) { |
d62a17ae | 768 | return 0; |
769 | } | |
9fd92e3c | 770 | |
c86ba6c2 DS |
771 | /* |
772 | * Unresolved rnh's are stored on the default route's list | |
773 | * | |
774 | * dest->rnode can also be the source prefix node in an | |
775 | * ipv6 sourcedest table. Fortunately the prefix of a | |
776 | * source prefix node can never be the default prefix. | |
777 | */ | |
778 | if (is_default_prefix(&dest->rnode->p)) | |
779 | return 0; | |
780 | ||
d62a17ae | 781 | /* |
782 | * Don't delete the dest if we have to update the FPM about this | |
783 | * prefix. | |
784 | */ | |
785 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_FPM) | |
786 | || CHECK_FLAG(dest->flags, RIB_DEST_SENT_TO_FPM)) | |
787 | return 0; | |
5adc2528 | 788 | |
d62a17ae | 789 | return 1; |
9fd92e3c AS |
790 | } |
791 | ||
f99f1ff5 SP |
792 | void zebra_rib_evaluate_rn_nexthops(struct route_node *rn, uint32_t seq, |
793 | bool rt_delete) | |
699dae23 DS |
794 | { |
795 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
699dae23 DS |
796 | struct rnh *rnh; |
797 | ||
798 | /* | |
50872b08 | 799 | * We are storing the rnh's associated withb |
699dae23 DS |
800 | * the tracked nexthop as a list of the rn's. |
801 | * Unresolved rnh's are placed at the top | |
802 | * of the tree list.( 0.0.0.0/0 for v4 and 0::0/0 for v6 ) | |
803 | * As such for each rn we need to walk up the tree | |
804 | * and see if any rnh's need to see if they | |
805 | * would match a more specific route | |
806 | */ | |
807 | while (rn) { | |
e658173a | 808 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) |
15569c58 | 809 | zlog_debug( |
e658173a DS |
810 | "%s: %pRN Being examined for Nexthop Tracking Count: %zd", |
811 | __func__, rn, | |
15569c58 | 812 | dest ? rnh_list_count(&dest->nht) : 0); |
e658173a | 813 | |
f99f1ff5 SP |
814 | if (rt_delete && (!dest || !rnh_list_count(&dest->nht))) { |
815 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) | |
816 | zlog_debug("%pRN has no tracking NHTs. Bailing", | |
817 | rn); | |
818 | break; | |
819 | } | |
699dae23 DS |
820 | if (!dest) { |
821 | rn = rn->parent; | |
822 | if (rn) | |
823 | dest = rib_dest_from_rnode(rn); | |
824 | continue; | |
825 | } | |
826 | /* | |
827 | * If we have any rnh's stored in the nht list | |
828 | * then we know that this route node was used for | |
829 | * nht resolution and as such we need to call the | |
830 | * nexthop tracking evaluation code | |
831 | */ | |
739c9c90 | 832 | frr_each_safe(rnh_list, &dest->nht, rnh) { |
699dae23 DS |
833 | struct zebra_vrf *zvrf = |
834 | zebra_vrf_lookup_by_id(rnh->vrf_id); | |
835 | struct prefix *p = &rnh->node->p; | |
836 | ||
e658173a | 837 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) |
bd47f3a3 | 838 | zlog_debug( |
5ef3568f DS |
839 | "%s(%u):%pRN has Nexthop(%pRN) depending on it, evaluating %u:%u", |
840 | zvrf_name(zvrf), zvrf_id(zvrf), rn, | |
841 | rnh->node, seq, rnh->seqno); | |
699dae23 DS |
842 | |
843 | /* | |
844 | * If we have evaluated this node on this pass | |
845 | * already, due to following the tree up | |
846 | * then we know that we can move onto the next | |
847 | * rnh to process. | |
848 | * | |
849 | * Additionally we call zebra_evaluate_rnh | |
850 | * when we gc the dest. In this case we know | |
851 | * that there must be no other re's where | |
852 | * we were originally as such we know that | |
853 | * that sequence number is ok to respect. | |
854 | */ | |
50872b08 DS |
855 | if (rnh->seqno == seq) { |
856 | if (IS_ZEBRA_DEBUG_NHT_DETAILED) | |
857 | zlog_debug( | |
1d5453d6 | 858 | " Node processed and moved already"); |
699dae23 | 859 | continue; |
50872b08 | 860 | } |
699dae23 DS |
861 | |
862 | rnh->seqno = seq; | |
d597533a DS |
863 | zebra_evaluate_rnh(zvrf, family2afi(p->family), 0, p, |
864 | rnh->safi); | |
699dae23 DS |
865 | } |
866 | ||
867 | rn = rn->parent; | |
868 | if (rn) | |
869 | dest = rib_dest_from_rnode(rn); | |
870 | } | |
871 | } | |
872 | ||
9fd92e3c AS |
873 | /* |
874 | * rib_gc_dest | |
875 | * | |
876 | * Garbage collect the rib dest corresponding to the given route node | |
877 | * if appropriate. | |
878 | * | |
2951a7a4 | 879 | * Returns true if the dest was deleted, false otherwise. |
9fd92e3c | 880 | */ |
d62a17ae | 881 | int rib_gc_dest(struct route_node *rn) |
9fd92e3c | 882 | { |
d62a17ae | 883 | rib_dest_t *dest; |
9fd92e3c | 884 | |
d62a17ae | 885 | dest = rib_dest_from_rnode(rn); |
886 | if (!dest) | |
887 | return 0; | |
9fd92e3c | 888 | |
d62a17ae | 889 | if (!rib_can_delete_dest(dest)) |
890 | return 0; | |
9fd92e3c | 891 | |
c9abf558 DS |
892 | if (IS_ZEBRA_DEBUG_RIB) { |
893 | struct zebra_vrf *zvrf; | |
894 | ||
895 | zvrf = rib_dest_vrf(dest); | |
d62a17ae | 896 | rnode_debug(rn, zvrf_id(zvrf), "removing dest from table"); |
c9abf558 | 897 | } |
9fd92e3c | 898 | |
f99f1ff5 SP |
899 | zebra_rib_evaluate_rn_nexthops(rn, zebra_router_get_next_sequence(), |
900 | true); | |
699dae23 | 901 | |
d62a17ae | 902 | dest->rnode = NULL; |
aa57abfb | 903 | rnh_list_fini(&dest->nht); |
d62a17ae | 904 | XFREE(MTYPE_RIB_DEST, dest); |
905 | rn->info = NULL; | |
9fd92e3c | 906 | |
d62a17ae | 907 | /* |
908 | * Release the one reference that we keep on the route node. | |
909 | */ | |
910 | route_unlock_node(rn); | |
911 | return 1; | |
9fd92e3c AS |
912 | } |
913 | ||
224ccf29 DL |
914 | void zebra_rtable_node_cleanup(struct route_table *table, |
915 | struct route_node *node) | |
916 | { | |
917 | struct route_entry *re, *next; | |
918 | ||
919 | RNODE_FOREACH_RE_SAFE (node, re, next) { | |
920 | rib_unlink(node, re); | |
921 | } | |
922 | ||
923 | if (node->info) { | |
924 | rib_dest_t *dest = node->info; | |
925 | ||
0d0f516c | 926 | /* Remove from update queue of FPM module */ |
927 | hook_call(rib_shutdown, node); | |
928 | ||
224ccf29 DL |
929 | rnh_list_fini(&dest->nht); |
930 | XFREE(MTYPE_RIB_DEST, node->info); | |
931 | } | |
932 | } | |
933 | ||
d62a17ae | 934 | static void rib_process_add_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
935 | struct route_entry *new) | |
3e5c6e00 | 936 | { |
d62a17ae | 937 | hook_call(rib_update, rn, "new route selected"); |
3e5c6e00 | 938 | |
d62a17ae | 939 | /* Update real nexthop. This may actually determine if nexthop is active |
940 | * or not. */ | |
c415d895 | 941 | if (!nexthop_group_active_nexthop_num(&(new->nhe->nhg))) { |
d62a17ae | 942 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
943 | return; | |
944 | } | |
3e5c6e00 | 945 | |
e658173a DS |
946 | if (IS_ZEBRA_DEBUG_RIB) |
947 | zlog_debug("%s(%u:%u):%pRN: Adding route rn %p, re %p (%s)", | |
948 | zvrf_name(zvrf), zvrf_id(zvrf), new->table, rn, rn, | |
c2c02b76 | 949 | new, zebra_route_string(new->type)); |
3e5c6e00 | 950 | |
d62a17ae | 951 | /* If labeled-unicast route, install transit LSP. */ |
952 | if (zebra_rib_labeled_unicast(new)) | |
953 | zebra_mpls_lsp_install(zvrf, rn, new); | |
a64448ba | 954 | |
3cdba47a | 955 | rib_install_kernel(rn, new, NULL); |
3e5c6e00 | 956 | |
d62a17ae | 957 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 958 | } |
959 | ||
d62a17ae | 960 | static void rib_process_del_fib(struct zebra_vrf *zvrf, struct route_node *rn, |
961 | struct route_entry *old) | |
3e5c6e00 | 962 | { |
d62a17ae | 963 | hook_call(rib_update, rn, "removing existing route"); |
3e5c6e00 | 964 | |
d62a17ae | 965 | /* Uninstall from kernel. */ |
e658173a DS |
966 | if (IS_ZEBRA_DEBUG_RIB) |
967 | zlog_debug("%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s)", | |
968 | zvrf_name(zvrf), zvrf_id(zvrf), old->table, rn, rn, | |
c2c02b76 | 969 | old, zebra_route_string(old->type)); |
3e5c6e00 | 970 | |
d62a17ae | 971 | /* If labeled-unicast route, uninstall transit LSP. */ |
972 | if (zebra_rib_labeled_unicast(old)) | |
973 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
974 | ||
3cdba47a | 975 | rib_uninstall_kernel(rn, old); |
d62a17ae | 976 | |
977 | /* Update nexthop for route, reset changed flag. */ | |
ef57f35f DL |
978 | /* Note: this code also handles the Linux case when an interface goes |
979 | * down, causing the kernel to delete routes without sending DELROUTE | |
980 | * notifications | |
981 | */ | |
6883bf8d | 982 | if (RIB_KERNEL_ROUTE(old)) |
212df1de PG |
983 | SET_FLAG(old->status, ROUTE_ENTRY_REMOVED); |
984 | else | |
985 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); | |
d62a17ae | 986 | } |
987 | ||
988 | static void rib_process_update_fib(struct zebra_vrf *zvrf, | |
989 | struct route_node *rn, | |
990 | struct route_entry *old, | |
991 | struct route_entry *new) | |
992 | { | |
d62a17ae | 993 | int nh_active = 0; |
d62a17ae | 994 | |
995 | /* | |
996 | * We have to install or update if a new route has been selected or | |
997 | * something has changed. | |
998 | */ | |
999 | if (new != old || CHECK_FLAG(new->status, ROUTE_ENTRY_CHANGED)) { | |
1000 | hook_call(rib_update, rn, "updating existing route"); | |
1001 | ||
1002 | /* Update the nexthop; we could determine here that nexthop is | |
1003 | * inactive. */ | |
c415d895 | 1004 | if (nexthop_group_active_nexthop_num(&(new->nhe->nhg))) |
d62a17ae | 1005 | nh_active = 1; |
1006 | ||
1007 | /* If nexthop is active, install the selected route, if | |
1008 | * appropriate. If | |
1009 | * the install succeeds, cleanup flags for prior route, if | |
1010 | * different from | |
1011 | * newly selected. | |
1012 | */ | |
1013 | if (nh_active) { | |
1014 | if (IS_ZEBRA_DEBUG_RIB) { | |
d62a17ae | 1015 | if (new != old) |
1016 | zlog_debug( | |
e658173a | 1017 | "%s(%u:%u):%pRN: Updating route rn %p, re %p (%s) old %p (%s)", |
bd47f3a3 | 1018 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 1019 | new->table, rn, rn, new, |
2da33d6b DS |
1020 | zebra_route_string(new->type), |
1021 | old, | |
1022 | zebra_route_string(old->type)); | |
d62a17ae | 1023 | else |
1024 | zlog_debug( | |
e658173a | 1025 | "%s(%u:%u):%pRN: Updating route rn %p, re %p (%s)", |
bd47f3a3 | 1026 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 1027 | new->table, rn, rn, new, |
2da33d6b | 1028 | zebra_route_string(new->type)); |
d62a17ae | 1029 | } |
1030 | ||
1031 | /* If labeled-unicast route, uninstall transit LSP. */ | |
1032 | if (zebra_rib_labeled_unicast(old)) | |
1033 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
1034 | ||
3cdba47a DS |
1035 | /* |
1036 | * Non-system route should be installed. | |
1037 | * If labeled-unicast route, install transit | |
1038 | * LSP. | |
1039 | */ | |
1040 | if (zebra_rib_labeled_unicast(new)) | |
1041 | zebra_mpls_lsp_install(zvrf, rn, new); | |
d62a17ae | 1042 | |
3cdba47a | 1043 | rib_install_kernel(rn, new, old); |
d62a17ae | 1044 | } |
a64448ba | 1045 | |
d62a17ae | 1046 | /* |
1047 | * If nexthop for selected route is not active or install | |
1048 | * failed, we | |
1049 | * may need to uninstall and delete for redistribution. | |
1050 | */ | |
ed216282 | 1051 | if (!nh_active) { |
d62a17ae | 1052 | if (IS_ZEBRA_DEBUG_RIB) { |
d62a17ae | 1053 | if (new != old) |
1054 | zlog_debug( | |
e658173a | 1055 | "%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s) old %p (%s) - nexthop inactive", |
bd47f3a3 | 1056 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 1057 | new->table, rn, rn, new, |
2da33d6b DS |
1058 | zebra_route_string(new->type), |
1059 | old, | |
1060 | zebra_route_string(old->type)); | |
d62a17ae | 1061 | else |
1062 | zlog_debug( | |
e658173a | 1063 | "%s(%u:%u):%pRN: Deleting route rn %p, re %p (%s) - nexthop inactive", |
bd47f3a3 | 1064 | zvrf_name(zvrf), zvrf_id(zvrf), |
e658173a | 1065 | new->table, rn, rn, new, |
2da33d6b | 1066 | zebra_route_string(new->type)); |
d62a17ae | 1067 | } |
1068 | ||
5c18e662 DS |
1069 | /* |
1070 | * When we have gotten to this point | |
1071 | * the new route entry has no nexthops | |
1072 | * that are usable and as such we need | |
1073 | * to remove the old route, but only | |
1074 | * if we were the one who installed | |
1075 | * the old route | |
1076 | */ | |
1077 | if (!RIB_SYSTEM_ROUTE(old)) { | |
1078 | /* If labeled-unicast route, uninstall transit | |
1079 | * LSP. */ | |
1080 | if (zebra_rib_labeled_unicast(old)) | |
1081 | zebra_mpls_lsp_uninstall(zvrf, rn, old); | |
d62a17ae | 1082 | |
5c18e662 DS |
1083 | rib_uninstall_kernel(rn, old); |
1084 | } | |
d62a17ae | 1085 | } |
1086 | } else { | |
1087 | /* | |
1088 | * Same route selected; check if in the FIB and if not, | |
3cdba47a DS |
1089 | * re-install. This is housekeeping code to deal with |
1090 | * race conditions in kernel with linux netlink reporting | |
1091 | * interface up before IPv4 or IPv6 protocol is ready | |
d62a17ae | 1092 | * to add routes. |
1093 | */ | |
3cdba47a DS |
1094 | if (!CHECK_FLAG(new->status, ROUTE_ENTRY_INSTALLED) || |
1095 | RIB_SYSTEM_ROUTE(new)) | |
677c1dd5 | 1096 | rib_install_kernel(rn, new, NULL); |
d62a17ae | 1097 | } |
1098 | ||
1099 | /* Update prior route. */ | |
6883bf8d | 1100 | if (new != old) |
d62a17ae | 1101 | UNSET_FLAG(old->status, ROUTE_ENTRY_CHANGED); |
3e5c6e00 | 1102 | |
d62a17ae | 1103 | /* Clear changed flag. */ |
1104 | UNSET_FLAG(new->status, ROUTE_ENTRY_CHANGED); | |
3e5c6e00 | 1105 | } |
1106 | ||
d62a17ae | 1107 | /* Check if 'alternate' RIB entry is better than 'current'. */ |
1108 | static struct route_entry *rib_choose_best(struct route_entry *current, | |
1109 | struct route_entry *alternate) | |
1110 | { | |
1111 | if (current == NULL) | |
1112 | return alternate; | |
1113 | ||
1114 | /* filter route selection in following order: | |
1115 | * - connected beats other types | |
fec4ca19 | 1116 | * - if both connected, loopback or vrf wins |
d62a17ae | 1117 | * - lower distance beats higher |
1118 | * - lower metric beats higher for equal distance | |
1119 | * - last, hence oldest, route wins tie break. | |
1120 | */ | |
1121 | ||
fec4ca19 DS |
1122 | /* Connected routes. Check to see if either are a vrf |
1123 | * or loopback interface. If not, pick the last connected | |
d62a17ae | 1124 | * route of the set of lowest metric connected routes. |
1125 | */ | |
1126 | if (alternate->type == ZEBRA_ROUTE_CONNECT) { | |
fec4ca19 DS |
1127 | if (current->type != ZEBRA_ROUTE_CONNECT) |
1128 | return alternate; | |
1129 | ||
1130 | /* both are connected. are either loop or vrf? */ | |
1131 | struct nexthop *nexthop = NULL; | |
1132 | ||
c415d895 | 1133 | for (ALL_NEXTHOPS(alternate->nhe->nhg, nexthop)) { |
873fde8c | 1134 | struct interface *ifp = if_lookup_by_index( |
1135 | nexthop->ifindex, alternate->vrf_id); | |
1136 | ||
608c8870 | 1137 | if (ifp && if_is_loopback(ifp)) |
fec4ca19 DS |
1138 | return alternate; |
1139 | } | |
1140 | ||
c415d895 | 1141 | for (ALL_NEXTHOPS(current->nhe->nhg, nexthop)) { |
873fde8c | 1142 | struct interface *ifp = if_lookup_by_index( |
1143 | nexthop->ifindex, current->vrf_id); | |
1144 | ||
608c8870 | 1145 | if (ifp && if_is_loopback(ifp)) |
fec4ca19 DS |
1146 | return current; |
1147 | } | |
1148 | ||
1149 | /* Neither are loop or vrf so pick best metric */ | |
1150 | if (alternate->metric <= current->metric) | |
d62a17ae | 1151 | return alternate; |
1152 | ||
1153 | return current; | |
1154 | } | |
3e5c6e00 | 1155 | |
d62a17ae | 1156 | if (current->type == ZEBRA_ROUTE_CONNECT) |
1157 | return current; | |
3e5c6e00 | 1158 | |
d62a17ae | 1159 | /* higher distance loses */ |
1160 | if (alternate->distance < current->distance) | |
1161 | return alternate; | |
1162 | if (current->distance < alternate->distance) | |
1163 | return current; | |
3e5c6e00 | 1164 | |
d62a17ae | 1165 | /* metric tie-breaks equal distance */ |
1166 | if (alternate->metric <= current->metric) | |
1167 | return alternate; | |
3e5c6e00 | 1168 | |
d62a17ae | 1169 | return current; |
3e5c6e00 | 1170 | } |
1171 | ||
d62a17ae | 1172 | /* Core function for processing routing information base. */ |
1173 | static void rib_process(struct route_node *rn) | |
1174 | { | |
1175 | struct route_entry *re; | |
1176 | struct route_entry *next; | |
1177 | struct route_entry *old_selected = NULL; | |
1178 | struct route_entry *new_selected = NULL; | |
1179 | struct route_entry *old_fib = NULL; | |
1180 | struct route_entry *new_fib = NULL; | |
1181 | struct route_entry *best = NULL; | |
d62a17ae | 1182 | rib_dest_t *dest; |
1183 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1184 | struct vrf *vrf; |
86391e56 | 1185 | |
d62a17ae | 1186 | vrf_id_t vrf_id = VRF_UNKNOWN; |
1187 | ||
1188 | assert(rn); | |
1189 | ||
1190 | dest = rib_dest_from_rnode(rn); | |
f0afc61d DS |
1191 | /* |
1192 | * We have an enqueued node with nothing to process here | |
1193 | * let's just finish up and return; | |
1194 | */ | |
1195 | if (!dest) | |
1196 | return; | |
bab85d4f | 1197 | |
f0afc61d DS |
1198 | zvrf = rib_dest_vrf(dest); |
1199 | vrf_id = zvrf_id(zvrf); | |
bd47f3a3 | 1200 | |
bd47f3a3 | 1201 | vrf = vrf_lookup_by_id(vrf_id); |
bab85d4f | 1202 | |
607425e5 DS |
1203 | /* |
1204 | * we can have rn's that have a NULL info pointer | |
1205 | * (dest). As such let's not let the deref happen | |
1206 | * additionally we know RNODE_FOREACH_RE_SAFE | |
1207 | * will not iterate so we are ok. | |
1208 | */ | |
f0afc61d DS |
1209 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1210 | struct route_entry *re = re_list_first(&dest->routes); | |
f5158712 | 1211 | |
e658173a DS |
1212 | zlog_debug("%s(%u:%u):%pRN: Processing rn %p", |
1213 | VRF_LOGNAME(vrf), vrf_id, re->table, rn, | |
f0afc61d | 1214 | rn); |
f5158712 | 1215 | } |
5f7a4718 | 1216 | |
f0afc61d DS |
1217 | old_fib = dest->selected_fib; |
1218 | ||
a2addae8 | 1219 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
61e6de9d DS |
1220 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
1221 | char flags_buf[128]; | |
1222 | char status_buf[128]; | |
1223 | ||
d62a17ae | 1224 | zlog_debug( |
e658173a DS |
1225 | "%s(%u:%u):%pRN: Examine re %p (%s) status: %sflags: %sdist %d metric %d", |
1226 | VRF_LOGNAME(vrf), vrf_id, re->table, rn, re, | |
61e6de9d DS |
1227 | zebra_route_string(re->type), |
1228 | _dump_re_status(re, status_buf, | |
1229 | sizeof(status_buf)), | |
1230 | zclient_dump_route_flags(re->flags, flags_buf, | |
1231 | sizeof(flags_buf)), | |
1232 | re->distance, re->metric); | |
1233 | } | |
d62a17ae | 1234 | |
d62a17ae | 1235 | /* Currently selected re. */ |
1236 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) { | |
1237 | assert(old_selected == NULL); | |
1238 | old_selected = re; | |
1239 | } | |
bab85d4f | 1240 | |
d62a17ae | 1241 | /* Skip deleted entries from selection */ |
1242 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1243 | continue; | |
1244 | ||
9d221fac DS |
1245 | /* |
1246 | * If the route entry has changed, verify/resolve | |
1247 | * the nexthops associated with the entry. | |
1248 | * | |
1249 | * In any event if we have nexthops that are not active | |
1250 | * then we cannot use this particular route entry so | |
1251 | * skip it. | |
d62a17ae | 1252 | */ |
9d221fac DS |
1253 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_CHANGED)) { |
1254 | if (!nexthop_active_update(rn, re)) { | |
7e010c4b DS |
1255 | const struct prefix *p; |
1256 | struct rib_table_info *info; | |
1257 | ||
9d221fac DS |
1258 | if (re->type == ZEBRA_ROUTE_TABLE) { |
1259 | /* XXX: HERE BE DRAGONS!!!!! | |
1260 | * In all honesty, I have not yet | |
1261 | * figured out what this part does or | |
1262 | * why the ROUTE_ENTRY_CHANGED test | |
1263 | * above is correct or why we need to | |
1264 | * delete a route here, and also not | |
1265 | * whether this concerns both selected | |
1266 | * and fib route, or only selected | |
1267 | * or only fib | |
1268 | * | |
1269 | * This entry was denied by the 'ip | |
1270 | * protocol | |
1271 | * table' route-map, we need to delete | |
1272 | * it */ | |
1273 | if (re != old_selected) { | |
1274 | if (IS_ZEBRA_DEBUG_RIB) | |
1275 | zlog_debug( | |
e658173a | 1276 | "%s: %s(%u):%pRN: imported via import-table but denied by the ip protocol table route-map", |
9d221fac DS |
1277 | __func__, |
1278 | VRF_LOGNAME( | |
1279 | vrf), | |
e658173a | 1280 | vrf_id, rn); |
9d221fac | 1281 | rib_unlink(rn, re); |
e96817f8 | 1282 | continue; |
9d221fac DS |
1283 | } else |
1284 | SET_FLAG(re->status, | |
1285 | ROUTE_ENTRY_REMOVED); | |
1286 | } | |
d62a17ae | 1287 | |
7e010c4b DS |
1288 | info = srcdest_rnode_table_info(rn); |
1289 | srcdest_rnode_prefixes(rn, &p, NULL); | |
a7704e1b DS |
1290 | zsend_route_notify_owner( |
1291 | rn, re, ZAPI_ROUTE_FAIL_INSTALL, | |
1292 | info->afi, info->safi); | |
9d221fac DS |
1293 | continue; |
1294 | } | |
1295 | } else { | |
1296 | /* | |
1297 | * If the re has not changed and the nhg we have is | |
1298 | * not usable, then we cannot use this route entry | |
1299 | * for consideration, as that the route will just | |
1300 | * not install if it is selected. | |
1301 | */ | |
1302 | if (!nexthop_group_active_nexthop_num(&re->nhe->nhg)) | |
1303 | continue; | |
d62a17ae | 1304 | } |
bab85d4f | 1305 | |
d62a17ae | 1306 | /* Infinite distance. */ |
3332f4f0 DS |
1307 | if (re->distance == DISTANCE_INFINITY && |
1308 | re->type != ZEBRA_ROUTE_KERNEL) { | |
d62a17ae | 1309 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
1310 | continue; | |
1311 | } | |
bab85d4f | 1312 | |
d62a17ae | 1313 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_FIB_OVERRIDE)) { |
1314 | best = rib_choose_best(new_fib, re); | |
1315 | if (new_fib && best != new_fib) | |
1316 | UNSET_FLAG(new_fib->status, | |
1317 | ROUTE_ENTRY_CHANGED); | |
1318 | new_fib = best; | |
1319 | } else { | |
1320 | best = rib_choose_best(new_selected, re); | |
1321 | if (new_selected && best != new_selected) | |
1322 | UNSET_FLAG(new_selected->status, | |
1323 | ROUTE_ENTRY_CHANGED); | |
1324 | new_selected = best; | |
1325 | } | |
1326 | if (best != re) | |
1327 | UNSET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
1328 | } /* RNODE_FOREACH_RE */ | |
1329 | ||
1330 | /* If no FIB override route, use the selected route also for FIB */ | |
1331 | if (new_fib == NULL) | |
1332 | new_fib = new_selected; | |
1333 | ||
1334 | /* After the cycle is finished, the following pointers will be set: | |
1335 | * old_selected --- RE entry currently having SELECTED | |
1336 | * new_selected --- RE entry that is newly SELECTED | |
1337 | * old_fib --- RE entry currently in kernel FIB | |
1338 | * new_fib --- RE entry that is newly to be in kernel FIB | |
1339 | * | |
1340 | * new_selected will get SELECTED flag, and is going to be redistributed | |
1341 | * the zclients. new_fib (which can be new_selected) will be installed | |
1342 | * in kernel. | |
1343 | */ | |
1344 | ||
1345 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
c2c02b76 DS |
1346 | struct route_entry *entry; |
1347 | ||
1348 | entry = old_selected | |
1349 | ? old_selected | |
1350 | : new_selected | |
1351 | ? new_selected | |
1352 | : old_fib ? old_fib | |
1353 | : new_fib ? new_fib : NULL; | |
1354 | ||
d62a17ae | 1355 | zlog_debug( |
e658173a DS |
1356 | "%s(%u:%u):%pRN: After processing: old_selected %p new_selected %p old_fib %p new_fib %p", |
1357 | VRF_LOGNAME(vrf), vrf_id, entry ? entry->table : 0, rn, | |
c2c02b76 DS |
1358 | (void *)old_selected, (void *)new_selected, |
1359 | (void *)old_fib, (void *)new_fib); | |
d62a17ae | 1360 | } |
446bb95e | 1361 | |
d62a17ae | 1362 | /* Buffer ROUTE_ENTRY_CHANGED here, because it will get cleared if |
1363 | * fib == selected */ | |
9d303b37 DL |
1364 | bool selected_changed = new_selected && CHECK_FLAG(new_selected->status, |
1365 | ROUTE_ENTRY_CHANGED); | |
d62a17ae | 1366 | |
8cb41cd6 | 1367 | /* Update SELECTED entry */ |
d62a17ae | 1368 | if (old_selected != new_selected || selected_changed) { |
93bdadae | 1369 | |
6883bf8d | 1370 | if (new_selected && new_selected != new_fib) |
d62a17ae | 1371 | UNSET_FLAG(new_selected->status, ROUTE_ENTRY_CHANGED); |
41ec9222 | 1372 | |
3cdba47a | 1373 | if (new_selected) |
5af4b346 MS |
1374 | SET_FLAG(new_selected->flags, ZEBRA_FLAG_SELECTED); |
1375 | ||
d62a17ae | 1376 | if (old_selected) { |
40f321c0 MS |
1377 | /* |
1378 | * If we're removing the old entry, we should tell | |
1379 | * redist subscribers about that *if* they aren't | |
1380 | * going to see a redist for the new entry. | |
1381 | */ | |
1382 | if (!new_selected || CHECK_FLAG(old_selected->status, | |
1383 | ROUTE_ENTRY_REMOVED)) | |
b3a9fca1 | 1384 | redistribute_delete(rn, old_selected, |
40f321c0 MS |
1385 | new_selected); |
1386 | ||
d62a17ae | 1387 | if (old_selected != new_selected) |
1388 | UNSET_FLAG(old_selected->flags, | |
1389 | ZEBRA_FLAG_SELECTED); | |
f857321e | 1390 | } |
d62a17ae | 1391 | } |
3e5c6e00 | 1392 | |
f68ce976 DL |
1393 | /* Update fib according to selection results */ |
1394 | if (new_fib && old_fib) | |
1395 | rib_process_update_fib(zvrf, rn, old_fib, new_fib); | |
1396 | else if (new_fib) | |
1397 | rib_process_add_fib(zvrf, rn, new_fib); | |
1398 | else if (old_fib) | |
1399 | rib_process_del_fib(zvrf, rn, old_fib); | |
1400 | ||
d62a17ae | 1401 | /* Remove all RE entries queued for removal */ |
a2addae8 | 1402 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 1403 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { |
1404 | if (IS_ZEBRA_DEBUG_RIB) { | |
1405 | rnode_debug(rn, vrf_id, "rn %p, removing re %p", | |
1406 | (void *)rn, (void *)re); | |
1407 | } | |
1408 | rib_unlink(rn, re); | |
1409 | } | |
1410 | } | |
4d38fdb4 | 1411 | |
d62a17ae | 1412 | /* |
1413 | * Check if the dest can be deleted now. | |
1414 | */ | |
1415 | rib_gc_dest(rn); | |
e96f9203 DO |
1416 | } |
1417 | ||
a1494c25 DS |
1418 | static void zebra_rib_evaluate_mpls(struct route_node *rn) |
1419 | { | |
1420 | rib_dest_t *dest = rib_dest_from_rnode(rn); | |
9a7d1e74 | 1421 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
a1494c25 DS |
1422 | |
1423 | if (!dest) | |
1424 | return; | |
1425 | ||
1426 | if (CHECK_FLAG(dest->flags, RIB_DEST_UPDATE_LSPS)) { | |
1427 | if (IS_ZEBRA_DEBUG_MPLS) | |
1428 | zlog_debug( | |
bd47f3a3 JU |
1429 | "%s(%u): Scheduling all LSPs upon RIB completion", |
1430 | zvrf_name(zvrf), zvrf_id(zvrf)); | |
a1494c25 DS |
1431 | zebra_mpls_lsp_schedule(zvrf); |
1432 | mpls_unmark_lsps_for_processing(rn); | |
1433 | } | |
1434 | } | |
1435 | ||
e5ac2adf MS |
1436 | /* |
1437 | * Utility to match route with dplane context data | |
1438 | */ | |
1439 | static bool rib_route_match_ctx(const struct route_entry *re, | |
25779064 MS |
1440 | const struct zebra_dplane_ctx *ctx, |
1441 | bool is_update) | |
e5ac2adf MS |
1442 | { |
1443 | bool result = false; | |
1444 | ||
1445 | if (is_update) { | |
1446 | /* | |
1447 | * In 'update' case, we test info about the 'previous' or | |
1448 | * 'old' route | |
1449 | */ | |
1450 | if ((re->type == dplane_ctx_get_old_type(ctx)) && | |
1451 | (re->instance == dplane_ctx_get_old_instance(ctx))) { | |
1452 | result = true; | |
1453 | ||
9db35a5e MS |
1454 | /* We use an extra test for statics, and another for |
1455 | * kernel routes. | |
e5ac2adf MS |
1456 | */ |
1457 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1458 | (re->distance != dplane_ctx_get_old_distance(ctx) || | |
1459 | re->tag != dplane_ctx_get_old_tag(ctx))) { | |
1460 | result = false; | |
9db35a5e MS |
1461 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1462 | re->metric != | |
1463 | dplane_ctx_get_old_metric(ctx)) { | |
1464 | result = false; | |
e5ac2adf MS |
1465 | } |
1466 | } | |
1467 | ||
1468 | } else { | |
1469 | /* | |
1470 | * Ordinary, single-route case using primary context info | |
1471 | */ | |
1472 | if ((dplane_ctx_get_op(ctx) != DPLANE_OP_ROUTE_DELETE) && | |
1473 | CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
1474 | /* Skip route that's been deleted */ | |
1475 | goto done; | |
1476 | } | |
1477 | ||
1478 | if ((re->type == dplane_ctx_get_type(ctx)) && | |
1479 | (re->instance == dplane_ctx_get_instance(ctx))) { | |
1480 | result = true; | |
1481 | ||
9db35a5e MS |
1482 | /* We use an extra test for statics, and another for |
1483 | * kernel routes. | |
e5ac2adf MS |
1484 | */ |
1485 | if (re->type == ZEBRA_ROUTE_STATIC && | |
1486 | (re->distance != dplane_ctx_get_distance(ctx) || | |
1487 | re->tag != dplane_ctx_get_tag(ctx))) { | |
1488 | result = false; | |
9db35a5e MS |
1489 | } else if (re->type == ZEBRA_ROUTE_KERNEL && |
1490 | re->metric != dplane_ctx_get_metric(ctx)) { | |
1491 | result = false; | |
1492 | } else if (re->type == ZEBRA_ROUTE_CONNECT) { | |
1493 | result = nexthop_group_equal_no_recurse( | |
1494 | &re->nhe->nhg, dplane_ctx_get_ng(ctx)); | |
e5ac2adf MS |
1495 | } |
1496 | } | |
1497 | } | |
1498 | ||
1499 | done: | |
871a16cd | 1500 | return result; |
e5ac2adf MS |
1501 | } |
1502 | ||
3cdba47a DS |
1503 | static void zebra_rib_fixup_system(struct route_node *rn) |
1504 | { | |
1505 | struct route_entry *re; | |
1506 | ||
1507 | RNODE_FOREACH_RE(rn, re) { | |
1508 | struct nexthop *nhop; | |
1509 | ||
1510 | if (!RIB_SYSTEM_ROUTE(re)) | |
1511 | continue; | |
1512 | ||
1513 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
1514 | continue; | |
1515 | ||
1516 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
6d0ee6a0 | 1517 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
8d4665aa | 1518 | UNSET_FLAG(re->status, ROUTE_ENTRY_ROUTE_REPLACING); |
3cdba47a | 1519 | |
c415d895 | 1520 | for (ALL_NEXTHOPS(re->nhe->nhg, nhop)) { |
3cdba47a DS |
1521 | if (CHECK_FLAG(nhop->flags, NEXTHOP_FLAG_RECURSIVE)) |
1522 | continue; | |
1523 | ||
1524 | SET_FLAG(nhop->flags, NEXTHOP_FLAG_FIB); | |
1525 | } | |
1526 | } | |
1527 | } | |
1528 | ||
9db35a5e MS |
1529 | /* Route comparison logic, with various special cases. */ |
1530 | static bool rib_compare_routes(const struct route_entry *re1, | |
1531 | const struct route_entry *re2) | |
1532 | { | |
9db35a5e MS |
1533 | if (re1->type != re2->type) |
1534 | return false; | |
1535 | ||
1536 | if (re1->instance != re2->instance) | |
1537 | return false; | |
1538 | ||
1539 | if (re1->type == ZEBRA_ROUTE_KERNEL && re1->metric != re2->metric) | |
1540 | return false; | |
1541 | ||
1542 | if (CHECK_FLAG(re1->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && | |
1543 | re1->distance != re2->distance) | |
1544 | return false; | |
1545 | ||
87009d7d MS |
1546 | /* We support multiple connected routes: this supports multiple |
1547 | * v6 link-locals, and we also support multiple addresses in the same | |
1548 | * subnet on a single interface. | |
1549 | */ | |
9db35a5e MS |
1550 | if (re1->type != ZEBRA_ROUTE_CONNECT) |
1551 | return true; | |
1552 | ||
87009d7d | 1553 | return false; |
9db35a5e MS |
1554 | } |
1555 | ||
9959f1da MS |
1556 | /* |
1557 | * Compare nexthop lists from a route and a dplane context; test whether | |
1558 | * the list installed in the FIB matches the route's list. | |
1559 | * Set 'changed_p' to 'true' if there were changes to the route's | |
1560 | * installed nexthops. | |
1561 | * | |
1562 | * Return 'false' if any ACTIVE route nexthops are not mentioned in the FIB | |
1563 | * list. | |
1564 | */ | |
1565 | static bool rib_update_nhg_from_ctx(struct nexthop_group *re_nhg, | |
1566 | const struct nexthop_group *ctx_nhg, | |
1567 | bool *changed_p) | |
1568 | { | |
1569 | bool matched_p = true; | |
1570 | struct nexthop *nexthop, *ctx_nexthop; | |
1571 | ||
1572 | /* Get the first `installed` one to check against. | |
1573 | * If the dataplane doesn't set these to be what was actually installed, | |
1574 | * it will just be whatever was in re->nhe->nhg? | |
1575 | */ | |
1576 | ctx_nexthop = ctx_nhg->nexthop; | |
1577 | ||
1578 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
1579 | || !CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1580 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1581 | ||
1582 | for (ALL_NEXTHOPS_PTR(re_nhg, nexthop)) { | |
1583 | ||
1584 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
1585 | continue; | |
1586 | ||
1587 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
1588 | continue; | |
1589 | ||
1590 | /* Check for a FIB nexthop corresponding to the RIB nexthop */ | |
7483dcbe | 1591 | if (!nexthop_same(ctx_nexthop, nexthop)) { |
9959f1da MS |
1592 | /* If the FIB doesn't know about the nexthop, |
1593 | * it's not installed | |
1594 | */ | |
1595 | if (IS_ZEBRA_DEBUG_RIB_DETAILED || | |
1596 | IS_ZEBRA_DEBUG_NHG_DETAIL) { | |
1597 | zlog_debug("%s: no ctx match for rib nh %pNHv %s", | |
1598 | __func__, nexthop, | |
1599 | (CHECK_FLAG(nexthop->flags, | |
1600 | NEXTHOP_FLAG_FIB) ? | |
1601 | "(FIB)":"")); | |
1602 | } | |
1603 | matched_p = false; | |
1604 | ||
1605 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1606 | *changed_p = true; | |
1607 | ||
1608 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1609 | ||
1610 | /* Keep checking nexthops */ | |
1611 | continue; | |
1612 | } | |
1613 | ||
1614 | if (CHECK_FLAG(ctx_nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1615 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1616 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1617 | zlog_debug("%s: rib nh %pNHv -> installed", | |
1618 | __func__, nexthop); | |
1619 | ||
1620 | *changed_p = true; | |
1621 | } | |
1622 | ||
1623 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1624 | } else { | |
1625 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1626 | if (IS_ZEBRA_DEBUG_NHG_DETAIL) | |
1627 | zlog_debug("%s: rib nh %pNHv -> uninstalled", | |
1628 | __func__, nexthop); | |
1629 | ||
1630 | *changed_p = true; | |
1631 | } | |
1632 | ||
1633 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1634 | } | |
1635 | ||
1636 | ctx_nexthop = nexthop_next_active_resolved(ctx_nexthop); | |
1637 | } | |
1638 | ||
1639 | return matched_p; | |
1640 | } | |
1641 | ||
e5ac2adf | 1642 | /* |
78bf56b0 MS |
1643 | * Update a route from a dplane context. This consolidates common code |
1644 | * that can be used in processing of results from FIB updates, and in | |
1645 | * async notification processing. | |
efe6c026 | 1646 | * The return is 'true' if the installed nexthops changed; 'false' otherwise. |
e5ac2adf | 1647 | */ |
efe6c026 MS |
1648 | static bool rib_update_re_from_ctx(struct route_entry *re, |
1649 | struct route_node *rn, | |
1650 | struct zebra_dplane_ctx *ctx) | |
78bf56b0 | 1651 | { |
9959f1da | 1652 | struct nexthop *nexthop; |
941e261c MS |
1653 | bool matched; |
1654 | const struct nexthop_group *ctxnhg; | |
9959f1da | 1655 | struct nexthop_group *re_nhg; |
efe6c026 MS |
1656 | bool is_selected = false; /* Is 're' currently the selected re? */ |
1657 | bool changed_p = false; /* Change to nexthops? */ | |
1658 | rib_dest_t *dest; | |
bd47f3a3 JU |
1659 | struct vrf *vrf; |
1660 | ||
1661 | vrf = vrf_lookup_by_id(re->vrf_id); | |
78bf56b0 | 1662 | |
efe6c026 MS |
1663 | dest = rib_dest_from_rnode(rn); |
1664 | if (dest) | |
1665 | is_selected = (re == dest->selected_fib); | |
1666 | ||
1667 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2919eea8 DS |
1668 | zlog_debug("update_from_ctx: %s(%u:%u):%pRN: %sSELECTED, re %p", |
1669 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
9db35a5e | 1670 | (is_selected ? "" : "NOT "), re); |
efe6c026 MS |
1671 | |
1672 | /* Update zebra's nexthop FIB flag for each nexthop that was installed. | |
941e261c | 1673 | * If the installed set differs from the set requested by the rib/owner, |
efe6c026 MS |
1674 | * we use the fib-specific nexthop-group to record the actual FIB |
1675 | * status. | |
78bf56b0 | 1676 | */ |
a126f120 MS |
1677 | matched = false; |
1678 | ctxnhg = dplane_ctx_get_ng(ctx); | |
941e261c | 1679 | |
9959f1da | 1680 | /* Check route's fib group and incoming notif group for equivalence. |
986a6617 SW |
1681 | * |
1682 | * Let's assume the nexthops are ordered here to save time. | |
941e261c | 1683 | */ |
9959f1da MS |
1684 | /* TODO -- this isn't testing or comparing the FIB flags; we should |
1685 | * do a more explicit loop, checking the incoming notification's flags. | |
1686 | */ | |
a126f120 MS |
1687 | if (re->fib_ng.nexthop && ctxnhg->nexthop && |
1688 | nexthop_group_equal(&re->fib_ng, ctxnhg)) | |
986a6617 | 1689 | matched = true; |
941e261c MS |
1690 | |
1691 | /* If the new FIB set matches the existing FIB set, we're done. */ | |
1692 | if (matched) { | |
1693 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1694 | zlog_debug( |
2919eea8 DS |
1695 | "%s(%u:%u):%pRN update_from_ctx(): existing fib nhg, no change", |
1696 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
9959f1da | 1697 | goto check_backups; |
941e261c | 1698 | |
7483dcbe | 1699 | } else if (CHECK_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG)) { |
941e261c MS |
1700 | /* |
1701 | * Free stale fib list and move on to check the rib nhg. | |
1702 | */ | |
1703 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1704 | zlog_debug( |
2919eea8 DS |
1705 | "%s(%u:%u):%pRN update_from_ctx(): replacing fib nhg", |
1706 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1707 | nexthops_free(re->fib_ng.nexthop); |
1708 | re->fib_ng.nexthop = NULL; | |
efe6c026 | 1709 | |
7483dcbe MS |
1710 | UNSET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); |
1711 | ||
efe6c026 MS |
1712 | /* Note that the installed nexthops have changed */ |
1713 | changed_p = true; | |
941e261c MS |
1714 | } else { |
1715 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1716 | zlog_debug( |
1717 | "%s(%u:%u):%pRN update_from_ctx(): no fib nhg", | |
1718 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn); | |
941e261c MS |
1719 | } |
1720 | ||
1721 | /* | |
1722 | * Compare with the rib nexthop group. The comparison here is different: | |
1723 | * the RIB group may be a superset of the list installed in the FIB. We | |
1724 | * walk the RIB group, looking for the 'installable' candidate | |
1725 | * nexthops, and then check those against the set | |
1726 | * that is actually installed. | |
986a6617 SW |
1727 | * |
1728 | * Assume nexthops are ordered here as well. | |
941e261c | 1729 | */ |
986a6617 | 1730 | |
9959f1da | 1731 | /* If nothing is installed, we can skip some of the checking/comparison |
1f6a5aca MS |
1732 | * of nexthops. |
1733 | */ | |
9959f1da | 1734 | if (ctxnhg->nexthop == NULL) { |
1f6a5aca MS |
1735 | changed_p = true; |
1736 | goto no_nexthops; | |
1737 | } | |
1738 | ||
9959f1da | 1739 | matched = rib_update_nhg_from_ctx(&(re->nhe->nhg), ctxnhg, &changed_p); |
78bf56b0 | 1740 | |
941e261c MS |
1741 | /* If all nexthops were processed, we're done */ |
1742 | if (matched) { | |
1743 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1744 | zlog_debug( |
2919eea8 DS |
1745 | "%s(%u:%u):%pRN update_from_ctx(): rib nhg matched, changed '%s'", |
1746 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
1747 | (changed_p ? "true" : "false")); | |
9959f1da | 1748 | goto check_backups; |
941e261c | 1749 | } |
78bf56b0 | 1750 | |
1f6a5aca MS |
1751 | no_nexthops: |
1752 | ||
941e261c MS |
1753 | /* FIB nexthop set differs from the RIB set: |
1754 | * create a fib-specific nexthop-group | |
1755 | */ | |
1756 | if (IS_ZEBRA_DEBUG_RIB) | |
bd47f3a3 | 1757 | zlog_debug( |
2919eea8 DS |
1758 | "%s(%u:%u):%pRN update_from_ctx(): changed %s, adding new fib nhg%s", |
1759 | VRF_LOGNAME(vrf), re->vrf_id, re->table, rn, | |
7483dcbe MS |
1760 | (changed_p ? "true" : "false"), |
1761 | ctxnhg->nexthop != NULL ? "" : " (empty)"); | |
941e261c | 1762 | |
7483dcbe | 1763 | /* Set the flag about the dedicated fib list */ |
8ce0e517 DS |
1764 | if (zrouter.asic_notification_nexthop_control) { |
1765 | SET_FLAG(re->status, ROUTE_ENTRY_USE_FIB_NHG); | |
1766 | if (ctxnhg->nexthop) | |
1767 | copy_nexthops(&(re->fib_ng.nexthop), ctxnhg->nexthop, | |
1768 | NULL); | |
1769 | } | |
941e261c | 1770 | |
9959f1da MS |
1771 | check_backups: |
1772 | ||
1773 | /* | |
1774 | * Check the status of the route's backup nexthops, if any. | |
1775 | * The logic for backups is somewhat different: if any backup is | |
1776 | * installed, a new fib nhg will be attached to the route. | |
1777 | */ | |
1778 | re_nhg = zebra_nhg_get_backup_nhg(re->nhe); | |
1779 | if (re_nhg == NULL) | |
1780 | goto done; /* No backup nexthops */ | |
1781 | ||
1782 | /* First check the route's 'fib' list of backups, if it's present | |
1783 | * from some previous event. | |
1784 | */ | |
1785 | re_nhg = &re->fib_backup_ng; | |
1786 | ctxnhg = dplane_ctx_get_backup_ng(ctx); | |
1787 | ||
1788 | matched = false; | |
1789 | if (re_nhg->nexthop && ctxnhg && nexthop_group_equal(re_nhg, ctxnhg)) | |
1790 | matched = true; | |
1791 | ||
1792 | /* If the new FIB set matches an existing FIB set, we're done. */ | |
1793 | if (matched) { | |
1794 | if (IS_ZEBRA_DEBUG_RIB) | |
1795 | zlog_debug( | |
2919eea8 DS |
1796 | "%s(%u):%pRN update_from_ctx(): existing fib backup nhg, no change", |
1797 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1798 | goto done; |
1799 | ||
1800 | } else if (re->fib_backup_ng.nexthop) { | |
1801 | /* | |
1802 | * Free stale fib backup list and move on to check | |
1803 | * the route's backups. | |
1804 | */ | |
1805 | if (IS_ZEBRA_DEBUG_RIB) | |
1806 | zlog_debug( | |
2919eea8 DS |
1807 | "%s(%u):%pRN update_from_ctx(): replacing fib backup nhg", |
1808 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1809 | nexthops_free(re->fib_backup_ng.nexthop); |
1810 | re->fib_backup_ng.nexthop = NULL; | |
1811 | ||
1812 | /* Note that the installed nexthops have changed */ | |
1813 | changed_p = true; | |
1814 | } else { | |
1815 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1816 | zlog_debug( |
1817 | "%s(%u):%pRN update_from_ctx(): no fib backup nhg", | |
1818 | VRF_LOGNAME(vrf), re->vrf_id, rn); | |
9959f1da MS |
1819 | } |
1820 | ||
1821 | /* | |
7483dcbe | 1822 | * If a FIB backup nexthop set exists, attach a copy |
9959f1da MS |
1823 | * to the route if any backup is installed |
1824 | */ | |
1825 | if (ctxnhg && ctxnhg->nexthop) { | |
1826 | ||
1827 | for (ALL_NEXTHOPS_PTR(ctxnhg, nexthop)) { | |
1828 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1829 | break; | |
1830 | } | |
1831 | ||
1832 | /* If no installed backups, we're done */ | |
1833 | if (nexthop == NULL) | |
1834 | goto done; | |
1835 | ||
1836 | if (IS_ZEBRA_DEBUG_RIB) | |
2919eea8 DS |
1837 | zlog_debug( |
1838 | "%s(%u):%pRN update_from_ctx(): changed %s, adding new backup fib nhg", | |
1839 | VRF_LOGNAME(vrf), re->vrf_id, rn, | |
1840 | (changed_p ? "true" : "false")); | |
9959f1da MS |
1841 | |
1842 | copy_nexthops(&(re->fib_backup_ng.nexthop), ctxnhg->nexthop, | |
1843 | NULL); | |
1844 | } | |
1845 | ||
941e261c | 1846 | done: |
9959f1da | 1847 | |
efe6c026 | 1848 | return changed_p; |
78bf56b0 MS |
1849 | } |
1850 | ||
e5ac2adf | 1851 | /* |
fad4d69c MS |
1852 | * Helper to locate a zebra route-node from a dplane context. This is used |
1853 | * when processing dplane results, e.g. Note well: the route-node is returned | |
1854 | * with a ref held - route_unlock_node() must be called eventually. | |
e5ac2adf | 1855 | */ |
a7704e1b | 1856 | struct route_node *rib_find_rn_from_ctx(const struct zebra_dplane_ctx *ctx) |
e5ac2adf MS |
1857 | { |
1858 | struct route_table *table = NULL; | |
1859 | struct route_node *rn = NULL; | |
e5ac2adf MS |
1860 | const struct prefix *dest_pfx, *src_pfx; |
1861 | ||
1862 | /* Locate rn and re(s) from ctx */ | |
1863 | ||
c7c0b007 SW |
1864 | table = zebra_vrf_lookup_table_with_table_id( |
1865 | dplane_ctx_get_afi(ctx), dplane_ctx_get_safi(ctx), | |
1866 | dplane_ctx_get_vrf(ctx), dplane_ctx_get_table(ctx)); | |
e5ac2adf MS |
1867 | if (table == NULL) { |
1868 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 JU |
1869 | zlog_debug( |
1870 | "Failed to find route for ctx: no table for afi %d, safi %d, vrf %s(%u)", | |
1871 | dplane_ctx_get_afi(ctx), | |
1872 | dplane_ctx_get_safi(ctx), | |
1873 | vrf_id_to_name(dplane_ctx_get_vrf(ctx)), | |
1874 | dplane_ctx_get_vrf(ctx)); | |
e5ac2adf MS |
1875 | } |
1876 | goto done; | |
1877 | } | |
1878 | ||
fad4d69c MS |
1879 | dest_pfx = dplane_ctx_get_dest(ctx); |
1880 | src_pfx = dplane_ctx_get_src(ctx); | |
1881 | ||
1882 | rn = srcdest_rnode_get(table, dest_pfx, | |
1883 | src_pfx ? (struct prefix_ipv6 *)src_pfx : NULL); | |
1884 | ||
1885 | done: | |
1886 | return rn; | |
1887 | } | |
1888 | ||
1889 | ||
97f5b441 | 1890 | |
fad4d69c MS |
1891 | /* |
1892 | * Route-update results processing after async dataplane update. | |
1893 | */ | |
1894 | static void rib_process_result(struct zebra_dplane_ctx *ctx) | |
1895 | { | |
1896 | struct zebra_vrf *zvrf = NULL; | |
bd47f3a3 | 1897 | struct vrf *vrf; |
fad4d69c MS |
1898 | struct route_node *rn = NULL; |
1899 | struct route_entry *re = NULL, *old_re = NULL, *rib; | |
1900 | bool is_update = false; | |
fad4d69c MS |
1901 | enum dplane_op_e op; |
1902 | enum zebra_dplane_result status; | |
fad4d69c | 1903 | uint32_t seq; |
9db35a5e | 1904 | rib_dest_t *dest; |
efe6c026 | 1905 | bool fib_changed = false; |
77b38a4a | 1906 | struct rib_table_info *info; |
f99f1ff5 | 1907 | bool rt_delete = false; |
97f5b441 | 1908 | |
9a7d1e74 | 1909 | zvrf = zebra_vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
bd47f3a3 | 1910 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
e5ac2adf | 1911 | |
fad4d69c MS |
1912 | /* Locate rn and re(s) from ctx */ |
1913 | rn = rib_find_rn_from_ctx(ctx); | |
e5ac2adf MS |
1914 | if (rn == NULL) { |
1915 | if (IS_ZEBRA_DEBUG_DPLANE) { | |
bd47f3a3 | 1916 | zlog_debug( |
69a2d597 DS |
1917 | "Failed to process dplane results: no route for %s(%u):%pRN", |
1918 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), rn); | |
e5ac2adf MS |
1919 | } |
1920 | goto done; | |
1921 | } | |
1922 | ||
9db35a5e | 1923 | dest = rib_dest_from_rnode(rn); |
77b38a4a | 1924 | info = srcdest_rnode_table_info(rn); |
e5ac2adf MS |
1925 | |
1926 | op = dplane_ctx_get_op(ctx); | |
1927 | status = dplane_ctx_get_status(ctx); | |
1928 | ||
c831033f | 1929 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1930 | zlog_debug( |
69a2d597 | 1931 | "%s(%u:%u):%pRN Processing dplane result ctx %p, op %s result %s", |
c2c02b76 | 1932 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 DS |
1933 | dplane_ctx_get_table(ctx), rn, ctx, dplane_op2str(op), |
1934 | dplane_res2str(status)); | |
e5ac2adf | 1935 | |
e5ac2adf MS |
1936 | /* |
1937 | * Update is a bit of a special case, where we may have both old and new | |
1938 | * routes to post-process. | |
1939 | */ | |
1940 | is_update = dplane_ctx_is_update(ctx); | |
1941 | ||
1942 | /* | |
1943 | * Take a pass through the routes, look for matches with the context | |
1944 | * info. | |
1945 | */ | |
1946 | RNODE_FOREACH_RE(rn, rib) { | |
1947 | ||
1948 | if (re == NULL) { | |
5709131c | 1949 | if (rib_route_match_ctx(rib, ctx, false)) |
e5ac2adf | 1950 | re = rib; |
e5ac2adf MS |
1951 | } |
1952 | ||
1953 | /* Check for old route match */ | |
1954 | if (is_update && (old_re == NULL)) { | |
5709131c | 1955 | if (rib_route_match_ctx(rib, ctx, true /*is_update*/)) |
e5ac2adf | 1956 | old_re = rib; |
e5ac2adf MS |
1957 | } |
1958 | ||
1959 | /* Have we found the routes we need to work on? */ | |
5709131c | 1960 | if (re && ((!is_update || old_re))) |
e5ac2adf | 1961 | break; |
e5ac2adf MS |
1962 | } |
1963 | ||
699dae23 DS |
1964 | seq = dplane_ctx_get_seq(ctx); |
1965 | ||
e5ac2adf MS |
1966 | /* |
1967 | * Check sequence number(s) to detect stale results before continuing | |
1968 | */ | |
60f98b23 | 1969 | if (re) { |
699dae23 | 1970 | if (re->dplane_sequence != seq) { |
60f98b23 | 1971 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) |
bd47f3a3 | 1972 | zlog_debug( |
69a2d597 | 1973 | "%s(%u):%pRN Stale dplane result for re %p", |
bd47f3a3 | 1974 | VRF_LOGNAME(vrf), |
69a2d597 | 1975 | dplane_ctx_get_vrf(ctx), rn, re); |
e4876266 DS |
1976 | } else { |
1977 | if (!zrouter.asic_offloaded || | |
1978 | (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED) || | |
8d4665aa DS |
1979 | CHECK_FLAG(re->flags, |
1980 | ZEBRA_FLAG_OFFLOAD_FAILED))) { | |
1981 | UNSET_FLAG(re->status, | |
1982 | ROUTE_ENTRY_ROUTE_REPLACING); | |
e4876266 | 1983 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
8d4665aa | 1984 | } |
e4876266 | 1985 | } |
e5ac2adf MS |
1986 | } |
1987 | ||
60f98b23 DS |
1988 | if (old_re) { |
1989 | if (old_re->dplane_sequence != dplane_ctx_get_old_seq(ctx)) { | |
1990 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 1991 | zlog_debug( |
69a2d597 | 1992 | "%s(%u:%u):%pRN Stale dplane result for old_re %p", |
bd47f3a3 | 1993 | VRF_LOGNAME(vrf), |
c2c02b76 | 1994 | dplane_ctx_get_vrf(ctx), old_re->table, |
69a2d597 | 1995 | rn, old_re); |
60f98b23 | 1996 | } else |
9ef0c6ba | 1997 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_QUEUED); |
e5ac2adf MS |
1998 | } |
1999 | ||
12e7fe3a | 2000 | switch (op) { |
12e7fe3a DS |
2001 | case DPLANE_OP_ROUTE_INSTALL: |
2002 | case DPLANE_OP_ROUTE_UPDATE: | |
2003 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
677c1dd5 DS |
2004 | if (re) { |
2005 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
2006 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2007 | } | |
b9f0e5ee DS |
2008 | /* |
2009 | * On an update operation from the same route type | |
2010 | * context retrieval currently has no way to know | |
2011 | * which was the old and which was the new. | |
2012 | * So don't unset our flags that we just set. | |
2013 | * We know redistribution is ok because the | |
2014 | * old_re in this case is used for nothing | |
2015 | * more than knowing whom to contact if necessary. | |
2016 | */ | |
2017 | if (old_re && old_re != re) { | |
677c1dd5 DS |
2018 | UNSET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
2019 | UNSET_FLAG(old_re->status, | |
2020 | ROUTE_ENTRY_INSTALLED); | |
2021 | } | |
f183e380 | 2022 | |
78bf56b0 | 2023 | /* Update zebra route based on the results in |
941e261c | 2024 | * the context struct. |
78bf56b0 | 2025 | */ |
941e261c | 2026 | if (re) { |
efe6c026 MS |
2027 | fib_changed = |
2028 | rib_update_re_from_ctx(re, rn, ctx); | |
2029 | ||
2030 | if (!fib_changed) { | |
2031 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
bd47f3a3 | 2032 | zlog_debug( |
69a2d597 | 2033 | "%s(%u:%u):%pRN no fib change for re", |
bd47f3a3 JU |
2034 | VRF_LOGNAME(vrf), |
2035 | dplane_ctx_get_vrf(ctx), | |
c2c02b76 DS |
2036 | dplane_ctx_get_table( |
2037 | ctx), | |
69a2d597 | 2038 | rn); |
12e7fe3a DS |
2039 | } |
2040 | ||
9db35a5e MS |
2041 | /* Redistribute if this is the selected re */ |
2042 | if (dest && re == dest->selected_fib) | |
ee78ed68 | 2043 | redistribute_update(rn, re, old_re); |
f183e380 MS |
2044 | } |
2045 | ||
3cdba47a DS |
2046 | /* |
2047 | * System routes are weird in that they | |
2048 | * allow multiple to be installed that match | |
2049 | * to the same prefix, so after we get the | |
2050 | * result we need to clean them up so that | |
2051 | * we can actually use them. | |
2052 | */ | |
2053 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
2054 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
2055 | zebra_rib_fixup_system(rn); | |
2056 | ||
f4c6e2a8 | 2057 | if (zvrf) |
12e7fe3a | 2058 | zvrf->installs++; |
f183e380 | 2059 | |
12e7fe3a | 2060 | /* Notify route owner */ |
e4876266 DS |
2061 | if (zebra_router_notify_on_ack()) |
2062 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_INSTALLED); | |
2063 | else { | |
2064 | if (re) { | |
2065 | if (CHECK_FLAG(re->flags, | |
2066 | ZEBRA_FLAG_OFFLOADED)) | |
2067 | zsend_route_notify_owner_ctx( | |
2068 | ctx, | |
2069 | ZAPI_ROUTE_INSTALLED); | |
2070 | if (CHECK_FLAG( | |
2071 | re->flags, | |
2072 | ZEBRA_FLAG_OFFLOAD_FAILED)) | |
2073 | zsend_route_notify_owner_ctx( | |
2074 | ctx, | |
2075 | ZAPI_ROUTE_FAIL_INSTALL); | |
2076 | } | |
2077 | } | |
12e7fe3a | 2078 | } else { |
7a230a9d | 2079 | if (re) { |
677c1dd5 | 2080 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); |
7a230a9d DS |
2081 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
2082 | } if (old_re) | |
677c1dd5 DS |
2083 | SET_FLAG(old_re->status, ROUTE_ENTRY_FAILED); |
2084 | if (re) | |
a7704e1b DS |
2085 | zsend_route_notify_owner( |
2086 | rn, re, ZAPI_ROUTE_FAIL_INSTALL, | |
2087 | info->afi, info->safi); | |
97f5b441 | 2088 | |
69a2d597 | 2089 | zlog_warn("%s(%u:%u):%pRN: Route install failed", |
bd47f3a3 | 2090 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 | 2091 | dplane_ctx_get_table(ctx), rn); |
12e7fe3a DS |
2092 | } |
2093 | break; | |
2094 | case DPLANE_OP_ROUTE_DELETE: | |
f99f1ff5 | 2095 | rt_delete = true; |
677c1dd5 DS |
2096 | if (re) |
2097 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
2098 | /* |
2099 | * In the delete case, the zebra core datastructs were | |
2100 | * updated (or removed) at the time the delete was issued, | |
2101 | * so we're just notifying the route owner. | |
e5ac2adf | 2102 | */ |
12e7fe3a | 2103 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
677c1dd5 DS |
2104 | if (re) { |
2105 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2106 | UNSET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
2107 | } | |
12e7fe3a | 2108 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_REMOVED); |
e5ac2adf | 2109 | |
12e7fe3a DS |
2110 | if (zvrf) |
2111 | zvrf->removals++; | |
2112 | } else { | |
677c1dd5 DS |
2113 | if (re) |
2114 | SET_FLAG(re->status, ROUTE_ENTRY_FAILED); | |
12e7fe3a DS |
2115 | zsend_route_notify_owner_ctx(ctx, |
2116 | ZAPI_ROUTE_REMOVE_FAIL); | |
e5ac2adf | 2117 | |
69a2d597 | 2118 | zlog_warn("%s(%u:%u):%pRN: Route Deletion failure", |
bd47f3a3 | 2119 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
69a2d597 | 2120 | dplane_ctx_get_table(ctx), rn); |
12e7fe3a | 2121 | } |
3cdba47a DS |
2122 | |
2123 | /* | |
2124 | * System routes are weird in that they | |
2125 | * allow multiple to be installed that match | |
2126 | * to the same prefix, so after we get the | |
2127 | * result we need to clean them up so that | |
2128 | * we can actually use them. | |
2129 | */ | |
2130 | if ((re && RIB_SYSTEM_ROUTE(re)) || | |
2131 | (old_re && RIB_SYSTEM_ROUTE(old_re))) | |
2132 | zebra_rib_fixup_system(rn); | |
12e7fe3a | 2133 | break; |
a98701f0 DS |
2134 | |
2135 | case DPLANE_OP_NONE: | |
2136 | case DPLANE_OP_ROUTE_NOTIFY: | |
2137 | case DPLANE_OP_NH_INSTALL: | |
2138 | case DPLANE_OP_NH_UPDATE: | |
2139 | case DPLANE_OP_NH_DELETE: | |
2140 | case DPLANE_OP_LSP_INSTALL: | |
2141 | case DPLANE_OP_LSP_UPDATE: | |
2142 | case DPLANE_OP_LSP_DELETE: | |
2143 | case DPLANE_OP_LSP_NOTIFY: | |
2144 | case DPLANE_OP_PW_INSTALL: | |
2145 | case DPLANE_OP_PW_UNINSTALL: | |
2146 | case DPLANE_OP_SYS_ROUTE_ADD: | |
2147 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
2148 | case DPLANE_OP_ADDR_INSTALL: | |
2149 | case DPLANE_OP_ADDR_UNINSTALL: | |
2150 | case DPLANE_OP_MAC_INSTALL: | |
2151 | case DPLANE_OP_MAC_DELETE: | |
2152 | case DPLANE_OP_NEIGH_INSTALL: | |
2153 | case DPLANE_OP_NEIGH_UPDATE: | |
2154 | case DPLANE_OP_NEIGH_DELETE: | |
2155 | case DPLANE_OP_VTEP_ADD: | |
2156 | case DPLANE_OP_VTEP_DELETE: | |
2157 | case DPLANE_OP_RULE_ADD: | |
2158 | case DPLANE_OP_RULE_DELETE: | |
2159 | case DPLANE_OP_RULE_UPDATE: | |
2160 | case DPLANE_OP_NEIGH_DISCOVER: | |
2161 | case DPLANE_OP_BR_PORT_UPDATE: | |
2162 | case DPLANE_OP_IPTABLE_ADD: | |
2163 | case DPLANE_OP_IPTABLE_DELETE: | |
2164 | case DPLANE_OP_IPSET_ADD: | |
2165 | case DPLANE_OP_IPSET_DELETE: | |
2166 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
2167 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
2168 | case DPLANE_OP_NEIGH_IP_INSTALL: | |
2169 | case DPLANE_OP_NEIGH_IP_DELETE: | |
2170 | case DPLANE_OP_NEIGH_TABLE_UPDATE: | |
2171 | case DPLANE_OP_GRE_SET: | |
2172 | case DPLANE_OP_INTF_ADDR_ADD: | |
2173 | case DPLANE_OP_INTF_ADDR_DEL: | |
2174 | case DPLANE_OP_INTF_NETCONFIG: | |
2175 | case DPLANE_OP_INTF_INSTALL: | |
2176 | case DPLANE_OP_INTF_UPDATE: | |
2177 | case DPLANE_OP_INTF_DELETE: | |
2178 | case DPLANE_OP_TC_QDISC_INSTALL: | |
2179 | case DPLANE_OP_TC_QDISC_UNINSTALL: | |
2180 | case DPLANE_OP_TC_CLASS_ADD: | |
2181 | case DPLANE_OP_TC_CLASS_DELETE: | |
2182 | case DPLANE_OP_TC_CLASS_UPDATE: | |
2183 | case DPLANE_OP_TC_FILTER_ADD: | |
2184 | case DPLANE_OP_TC_FILTER_DELETE: | |
2185 | case DPLANE_OP_TC_FILTER_UPDATE: | |
d37f4d6c | 2186 | break; |
e5ac2adf | 2187 | } |
699dae23 | 2188 | |
f99f1ff5 | 2189 | zebra_rib_evaluate_rn_nexthops(rn, seq, rt_delete); |
a1494c25 | 2190 | zebra_rib_evaluate_mpls(rn); |
e5ac2adf MS |
2191 | done: |
2192 | ||
5f27bcba DS |
2193 | if (rn) |
2194 | route_unlock_node(rn); | |
e5ac2adf MS |
2195 | } |
2196 | ||
9959f1da MS |
2197 | /* |
2198 | * Count installed/FIB nexthops | |
2199 | */ | |
2200 | static int rib_count_installed_nh(struct route_entry *re) | |
2201 | { | |
2202 | int count = 0; | |
2203 | struct nexthop *nexthop; | |
2204 | struct nexthop_group *nhg; | |
2205 | ||
2206 | nhg = rib_get_fib_nhg(re); | |
2207 | ||
2208 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2209 | /* The meaningful flag depends on where the installed | |
2210 | * nexthops reside. | |
2211 | */ | |
43a9f66c | 2212 | if (nhg == &(re->fib_ng)) { |
9959f1da MS |
2213 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) |
2214 | count++; | |
2215 | } else { | |
2216 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
2217 | count++; | |
2218 | } | |
2219 | } | |
2220 | ||
43a9f66c MS |
2221 | nhg = rib_get_fib_backup_nhg(re); |
2222 | if (nhg) { | |
2223 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
2224 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2225 | count++; | |
2226 | } | |
9959f1da MS |
2227 | } |
2228 | ||
2229 | return count; | |
2230 | } | |
2231 | ||
54818e3b MS |
2232 | /* |
2233 | * Handle notification from async dataplane: the dataplane has detected | |
2234 | * some change to a route, and notifies zebra so that the control plane | |
2235 | * can reflect that change. | |
2236 | */ | |
2237 | static void rib_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2238 | { | |
2239 | struct route_node *rn = NULL; | |
efe6c026 | 2240 | struct route_entry *re = NULL; |
bd47f3a3 | 2241 | struct vrf *vrf; |
efe6c026 | 2242 | struct nexthop *nexthop; |
941e261c | 2243 | rib_dest_t *dest; |
efe6c026 | 2244 | bool fib_changed = false; |
941e261c | 2245 | bool debug_p = IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_RIB; |
efe6c026 | 2246 | int start_count, end_count; |
898b4a6d | 2247 | |
bd47f3a3 | 2248 | vrf = vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); |
54818e3b | 2249 | |
54818e3b MS |
2250 | /* Locate rn and re(s) from ctx */ |
2251 | rn = rib_find_rn_from_ctx(ctx); | |
2252 | if (rn == NULL) { | |
941e261c | 2253 | if (debug_p) { |
bd47f3a3 | 2254 | zlog_debug( |
898b4a6d | 2255 | "Failed to process dplane notification: no routes for %s(%u:%u):%pRN", |
bd47f3a3 | 2256 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2257 | dplane_ctx_get_table(ctx), rn); |
54818e3b MS |
2258 | } |
2259 | goto done; | |
2260 | } | |
2261 | ||
941e261c | 2262 | dest = rib_dest_from_rnode(rn); |
54818e3b | 2263 | |
efe6c026 | 2264 | if (debug_p) |
898b4a6d | 2265 | zlog_debug("%s(%u:%u):%pRN Processing dplane notif ctx %p", |
c2c02b76 | 2266 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2267 | dplane_ctx_get_table(ctx), rn, ctx); |
54818e3b MS |
2268 | |
2269 | /* | |
2270 | * Take a pass through the routes, look for matches with the context | |
2271 | * info. | |
2272 | */ | |
efe6c026 MS |
2273 | RNODE_FOREACH_RE(rn, re) { |
2274 | if (rib_route_match_ctx(re, ctx, false /*!update*/)) | |
54818e3b MS |
2275 | break; |
2276 | } | |
2277 | ||
2278 | /* No match? Nothing we can do */ | |
2279 | if (re == NULL) { | |
941e261c | 2280 | if (debug_p) |
bd47f3a3 | 2281 | zlog_debug( |
898b4a6d | 2282 | "%s(%u:%u):%pRN Unable to process dplane notification: no entry for type %s", |
bd47f3a3 | 2283 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2284 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 | 2285 | zebra_route_string(dplane_ctx_get_type(ctx))); |
54818e3b MS |
2286 | |
2287 | goto done; | |
2288 | } | |
2289 | ||
272e8903 | 2290 | /* Ensure we clear the QUEUED flag */ |
a0e11736 DS |
2291 | UNSET_FLAG(re->status, ROUTE_ENTRY_QUEUED); |
2292 | UNSET_FLAG(re->status, ROUTE_ENTRY_ROUTE_REPLACING); | |
272e8903 | 2293 | |
4c0b5436 MS |
2294 | /* Is this a notification that ... matters? We mostly care about |
2295 | * the route that is currently selected for installation; we may also | |
2296 | * get an un-install notification, and handle that too. | |
941e261c MS |
2297 | */ |
2298 | if (re != dest->selected_fib) { | |
4c0b5436 MS |
2299 | /* |
2300 | * If we need to, clean up after a delete that was part of | |
2301 | * an update operation. | |
941e261c | 2302 | */ |
4c0b5436 MS |
2303 | end_count = 0; |
2304 | for (ALL_NEXTHOPS_PTR(dplane_ctx_get_ng(ctx), nexthop)) { | |
2305 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2306 | end_count++; | |
2307 | } | |
2308 | ||
2309 | /* If no nexthops or none installed, ensure that this re | |
2310 | * gets its 'installed' flag cleared. | |
2311 | */ | |
2312 | if (end_count == 0) { | |
2313 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) | |
2314 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
2315 | if (debug_p) | |
bd47f3a3 | 2316 | zlog_debug( |
898b4a6d | 2317 | "%s(%u:%u):%pRN dplane notif, uninstalled type %s route", |
bd47f3a3 | 2318 | VRF_LOGNAME(vrf), |
c2c02b76 | 2319 | dplane_ctx_get_vrf(ctx), |
898b4a6d | 2320 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 JU |
2321 | zebra_route_string( |
2322 | dplane_ctx_get_type(ctx))); | |
4c0b5436 MS |
2323 | } else { |
2324 | /* At least report on the event. */ | |
2325 | if (debug_p) | |
bd47f3a3 | 2326 | zlog_debug( |
898b4a6d | 2327 | "%s(%u:%u):%pRN dplane notif, but type %s not selected_fib", |
bd47f3a3 | 2328 | VRF_LOGNAME(vrf), |
c2c02b76 | 2329 | dplane_ctx_get_vrf(ctx), |
898b4a6d | 2330 | dplane_ctx_get_table(ctx), rn, |
bd47f3a3 JU |
2331 | zebra_route_string( |
2332 | dplane_ctx_get_type(ctx))); | |
4c0b5436 | 2333 | } |
941e261c | 2334 | goto done; |
a0e11736 DS |
2335 | } else { |
2336 | uint32_t flags = dplane_ctx_get_flags(ctx); | |
2337 | ||
2338 | if (CHECK_FLAG(flags, ZEBRA_FLAG_OFFLOADED)) { | |
2339 | UNSET_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED); | |
2340 | SET_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED); | |
2341 | } | |
2342 | if (CHECK_FLAG(flags, ZEBRA_FLAG_OFFLOAD_FAILED)) { | |
2343 | UNSET_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED); | |
2344 | SET_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED); | |
2345 | } | |
2346 | if (CHECK_FLAG(flags, ZEBRA_FLAG_TRAPPED)) | |
2347 | SET_FLAG(re->flags, ZEBRA_FLAG_TRAPPED); | |
941e261c MS |
2348 | } |
2349 | ||
efe6c026 MS |
2350 | /* We'll want to determine whether the installation status of the |
2351 | * route has changed: we'll check the status before processing, | |
2352 | * and then again if there's been a change. | |
2353 | */ | |
2354 | start_count = 0; | |
1c30d64b | 2355 | |
9959f1da MS |
2356 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED)) |
2357 | start_count = rib_count_installed_nh(re); | |
efe6c026 | 2358 | |
54818e3b MS |
2359 | /* Update zebra's nexthop FIB flags based on the context struct's |
2360 | * nexthops. | |
2361 | */ | |
efe6c026 | 2362 | fib_changed = rib_update_re_from_ctx(re, rn, ctx); |
54818e3b | 2363 | |
efe6c026 MS |
2364 | if (!fib_changed) { |
2365 | if (debug_p) | |
bd47f3a3 | 2366 | zlog_debug( |
898b4a6d | 2367 | "%s(%u:%u):%pRN dplane notification: rib_update returns FALSE", |
bd47f3a3 | 2368 | VRF_LOGNAME(vrf), dplane_ctx_get_vrf(ctx), |
898b4a6d | 2369 | dplane_ctx_get_table(ctx), rn); |
54818e3b MS |
2370 | } |
2371 | ||
188a00e0 MS |
2372 | /* |
2373 | * Perform follow-up work if the actual status of the prefix | |
efe6c026 | 2374 | * changed. |
941e261c | 2375 | */ |
9959f1da | 2376 | end_count = rib_count_installed_nh(re); |
941e261c | 2377 | |
188a00e0 MS |
2378 | /* Various fib transitions: changed nexthops; from installed to |
2379 | * not-installed; or not-installed to installed. | |
efe6c026 | 2380 | */ |
06525c4f DS |
2381 | if (zrouter.asic_notification_nexthop_control) { |
2382 | if (start_count > 0 && end_count > 0) { | |
2383 | if (debug_p) | |
2384 | zlog_debug( | |
2385 | "%s(%u:%u):%pRN applied nexthop changes from dplane notification", | |
2386 | VRF_LOGNAME(vrf), | |
2387 | dplane_ctx_get_vrf(ctx), | |
2388 | dplane_ctx_get_table(ctx), rn); | |
188a00e0 | 2389 | |
06525c4f DS |
2390 | /* Changed nexthops - update kernel/others */ |
2391 | dplane_route_notif_update(rn, re, | |
2392 | DPLANE_OP_ROUTE_UPDATE, ctx); | |
188a00e0 | 2393 | |
06525c4f DS |
2394 | } else if (start_count == 0 && end_count > 0) { |
2395 | if (debug_p) | |
2396 | zlog_debug( | |
2397 | "%s(%u:%u):%pRN installed transition from dplane notification", | |
2398 | VRF_LOGNAME(vrf), | |
2399 | dplane_ctx_get_vrf(ctx), | |
2400 | dplane_ctx_get_table(ctx), rn); | |
efe6c026 | 2401 | |
06525c4f DS |
2402 | /* We expect this to be the selected route, so we want |
2403 | * to tell others about this transition. | |
2404 | */ | |
2405 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
efe6c026 | 2406 | |
06525c4f DS |
2407 | /* Changed nexthops - update kernel/others */ |
2408 | dplane_route_notif_update(rn, re, | |
2409 | DPLANE_OP_ROUTE_UPDATE, ctx); | |
188a00e0 | 2410 | |
06525c4f DS |
2411 | /* Redistribute, lsp, and nht update */ |
2412 | redistribute_update(rn, re, NULL); | |
efe6c026 | 2413 | |
06525c4f DS |
2414 | } else if (start_count > 0 && end_count == 0) { |
2415 | if (debug_p) | |
2416 | zlog_debug( | |
2417 | "%s(%u:%u):%pRN un-installed transition from dplane notification", | |
2418 | VRF_LOGNAME(vrf), | |
2419 | dplane_ctx_get_vrf(ctx), | |
2420 | dplane_ctx_get_table(ctx), rn); | |
efe6c026 | 2421 | |
06525c4f DS |
2422 | /* Transition from _something_ installed to _nothing_ |
2423 | * installed. | |
2424 | */ | |
2425 | /* We expect this to be the selected route, so we want | |
2426 | * to tell others about this transistion. | |
2427 | */ | |
2428 | UNSET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); | |
efe6c026 | 2429 | |
06525c4f DS |
2430 | /* Changed nexthops - update kernel/others */ |
2431 | dplane_route_notif_update(rn, re, | |
2432 | DPLANE_OP_ROUTE_DELETE, ctx); | |
188a00e0 | 2433 | |
06525c4f DS |
2434 | /* Redistribute, lsp, and nht update */ |
2435 | redistribute_delete(rn, re, NULL); | |
2436 | } | |
2437 | } | |
2438 | ||
2439 | if (!zebra_router_notify_on_ack()) { | |
2440 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOADED)) | |
2441 | zsend_route_notify_owner_ctx(ctx, ZAPI_ROUTE_INSTALLED); | |
2442 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_OFFLOAD_FAILED)) | |
2443 | zsend_route_notify_owner_ctx(ctx, | |
2444 | ZAPI_ROUTE_FAIL_INSTALL); | |
9287b4c5 | 2445 | } |
efe6c026 | 2446 | |
9287b4c5 | 2447 | /* Make any changes visible for lsp and nexthop-tracking processing */ |
f99f1ff5 SP |
2448 | zebra_rib_evaluate_rn_nexthops(rn, zebra_router_get_next_sequence(), |
2449 | false); | |
efe6c026 | 2450 | |
9287b4c5 | 2451 | zebra_rib_evaluate_mpls(rn); |
941e261c | 2452 | |
54818e3b | 2453 | done: |
941e261c MS |
2454 | if (rn) |
2455 | route_unlock_node(rn); | |
54818e3b MS |
2456 | } |
2457 | ||
32367e7a MS |
2458 | /* |
2459 | * Process a node from the EVPN/VXLAN subqueue. | |
2460 | */ | |
2461 | static void process_subq_evpn(struct listnode *lnode) | |
2462 | { | |
2463 | struct wq_evpn_wrapper *w; | |
2464 | ||
2465 | /* In general, the list node points to a wrapper object | |
2466 | * holding the info necessary to make some update. | |
2467 | */ | |
2468 | w = listgetdata(lnode); | |
2469 | if (!w) | |
2470 | return; | |
2471 | ||
2472 | if (w->type == WQ_EVPN_WRAPPER_TYPE_VRFROUTE) { | |
2473 | if (w->add_p) | |
7f7e49d1 | 2474 | zebra_vxlan_evpn_vrf_route_add(w->vrf_id, &w->macaddr, |
32367e7a MS |
2475 | &w->ip, &w->prefix); |
2476 | else | |
2477 | zebra_vxlan_evpn_vrf_route_del(w->vrf_id, &w->ip, | |
2478 | &w->prefix); | |
2479 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_ES) { | |
2480 | if (w->add_p) | |
2481 | zebra_evpn_remote_es_add(&w->esi, w->ip.ipaddr_v4, | |
2482 | w->esr_rxed, w->df_alg, | |
2483 | w->df_pref); | |
2484 | else | |
2485 | zebra_evpn_remote_es_del(&w->esi, w->ip.ipaddr_v4); | |
7f7e49d1 MS |
2486 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_MACIP) { |
2487 | uint16_t ipa_len = 0; | |
2488 | ||
2489 | if (w->ip.ipa_type == IPADDR_V4) | |
2490 | ipa_len = IPV4_MAX_BYTELEN; | |
2491 | else if (w->ip.ipa_type == IPADDR_V6) | |
2492 | ipa_len = IPV6_MAX_BYTELEN; | |
2493 | ||
2494 | if (w->add_p) | |
2495 | zebra_evpn_rem_macip_add(w->vni, &w->macaddr, ipa_len, | |
2496 | &w->ip, w->flags, w->seq, | |
2497 | w->vtep_ip, &w->esi); | |
2498 | else | |
2499 | zebra_evpn_rem_macip_del(w->vni, &w->macaddr, ipa_len, | |
2500 | &w->ip, w->vtep_ip); | |
7e5b0b2b MS |
2501 | } else if (w->type == WQ_EVPN_WRAPPER_TYPE_REM_VTEP) { |
2502 | if (w->add_p) | |
2503 | zebra_vxlan_remote_vtep_add(w->vrf_id, w->vni, | |
2504 | w->vtep_ip, w->flags); | |
2505 | else | |
2506 | zebra_vxlan_remote_vtep_del(w->vrf_id, w->vni, | |
2507 | w->vtep_ip); | |
32367e7a MS |
2508 | } |
2509 | ||
7e5b0b2b | 2510 | |
32367e7a MS |
2511 | XFREE(MTYPE_WQ_WRAPPER, w); |
2512 | } | |
2513 | ||
04bec7b2 MS |
2514 | /* |
2515 | * Process the nexthop-group workqueue subqueue | |
2516 | */ | |
e22e8001 | 2517 | static void process_subq_nhg(struct listnode *lnode) |
e96f9203 | 2518 | { |
04bec7b2 MS |
2519 | struct nhg_ctx *ctx; |
2520 | struct nhg_hash_entry *nhe, *newnhe; | |
2521 | struct wq_nhg_wrapper *w; | |
4bbbd1f6 | 2522 | uint8_t qindex = META_QUEUE_NHG; |
5110a0c6 | 2523 | |
04bec7b2 | 2524 | w = listgetdata(lnode); |
e22e8001 | 2525 | |
04bec7b2 | 2526 | if (!w) |
e22e8001 SW |
2527 | return; |
2528 | ||
04bec7b2 MS |
2529 | /* Two types of object - an update from the local kernel, or |
2530 | * an nhg update from a daemon. | |
2531 | */ | |
2532 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) { | |
2533 | ctx = w->u.ctx; | |
2534 | ||
2535 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2536 | zlog_debug( | |
7a96ccc7 DS |
2537 | "NHG Context id=%u dequeued from sub-queue %s", |
2538 | ctx->id, subqueue2str(qindex)); | |
04bec7b2 MS |
2539 | |
2540 | ||
2541 | /* Process nexthop group updates coming 'up' from the OS */ | |
2542 | nhg_ctx_process(ctx); | |
e22e8001 | 2543 | |
04bec7b2 MS |
2544 | } else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) { |
2545 | nhe = w->u.nhe; | |
2546 | ||
2547 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
7a96ccc7 DS |
2548 | zlog_debug("NHG %u dequeued from sub-queue %s", nhe->id, |
2549 | subqueue2str(qindex)); | |
04bec7b2 MS |
2550 | |
2551 | /* Process incoming nhg update, probably from a proto daemon */ | |
2552 | newnhe = zebra_nhg_proto_add(nhe->id, nhe->type, | |
2553 | nhe->zapi_instance, | |
32367e7a | 2554 | nhe->zapi_session, &nhe->nhg, 0); |
04bec7b2 MS |
2555 | |
2556 | /* Report error to daemon via ZAPI */ | |
2557 | if (newnhe == NULL) | |
2558 | zsend_nhg_notify(nhe->type, nhe->zapi_instance, | |
2559 | nhe->zapi_session, nhe->id, | |
2560 | ZAPI_NHG_FAIL_INSTALL); | |
2561 | ||
2562 | /* Free temp nhe - we own that memory. */ | |
2563 | zebra_nhg_free(nhe); | |
2564 | } | |
e22e8001 | 2565 | |
32367e7a | 2566 | XFREE(MTYPE_WQ_WRAPPER, w); |
e22e8001 SW |
2567 | } |
2568 | ||
53216dff DS |
2569 | static void process_subq_early_label(struct listnode *lnode) |
2570 | { | |
2571 | struct wq_label_wrapper *w = listgetdata(lnode); | |
2572 | struct zebra_vrf *zvrf; | |
2573 | ||
2574 | if (!w) | |
2575 | return; | |
2576 | ||
9a7d1e74 | 2577 | zvrf = zebra_vrf_lookup_by_id(w->vrf_id); |
53216dff DS |
2578 | if (!zvrf) { |
2579 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2580 | return; | |
2581 | } | |
2582 | ||
2583 | switch (w->type) { | |
2584 | case WQ_LABEL_FTN_UNINSTALL: | |
2585 | zebra_mpls_ftn_uninstall(zvrf, w->ltype, &w->p, w->route_type, | |
2586 | w->route_instance); | |
2587 | break; | |
2588 | case WQ_LABEL_LABELS_PROCESS: | |
2589 | zebra_mpls_zapi_labels_process(w->add_p, zvrf, &w->zl); | |
2590 | break; | |
2591 | } | |
2592 | ||
2593 | XFREE(MTYPE_WQ_WRAPPER, w); | |
2594 | } | |
2595 | ||
e22e8001 SW |
2596 | static void process_subq_route(struct listnode *lnode, uint8_t qindex) |
2597 | { | |
2598 | struct route_node *rnode = NULL; | |
2599 | rib_dest_t *dest = NULL; | |
2600 | struct zebra_vrf *zvrf = NULL; | |
5110a0c6 | 2601 | |
d62a17ae | 2602 | rnode = listgetdata(lnode); |
2603 | dest = rib_dest_from_rnode(rnode); | |
c2c02b76 DS |
2604 | assert(dest); |
2605 | ||
2606 | zvrf = rib_dest_vrf(dest); | |
41ec9222 | 2607 | |
d62a17ae | 2608 | rib_process(rnode); |
5110a0c6 | 2609 | |
d62a17ae | 2610 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { |
7e26b9d4 | 2611 | struct route_entry *re = NULL; |
efe6c026 | 2612 | |
7e26b9d4 DS |
2613 | /* |
2614 | * rib_process may have freed the dest | |
2615 | * as part of the garbage collection. Let's | |
2616 | * prevent stupidity from happening. | |
2617 | */ | |
2618 | dest = rib_dest_from_rnode(rnode); | |
2619 | if (dest) | |
2620 | re = re_list_first(&dest->routes); | |
2621 | ||
7a96ccc7 | 2622 | zlog_debug("%s(%u:%u):%pRN rn %p dequeued from sub-queue %s", |
04bec7b2 | 2623 | zvrf_name(zvrf), zvrf_id(zvrf), re ? re->table : 0, |
7a96ccc7 | 2624 | rnode, rnode, subqueue2str(qindex)); |
d62a17ae | 2625 | } |
41ec9222 | 2626 | |
d62a17ae | 2627 | if (rnode->info) |
2628 | UNSET_FLAG(rib_dest_from_rnode(rnode)->flags, | |
2629 | RIB_ROUTE_QUEUED(qindex)); | |
9fd92e3c | 2630 | |
d62a17ae | 2631 | route_unlock_node(rnode); |
e22e8001 SW |
2632 | } |
2633 | ||
d7ac4c4d | 2634 | static void rib_re_nhg_free(struct route_entry *re) |
e22e8001 | 2635 | { |
d7ac4c4d DS |
2636 | if (re->nhe && re->nhe_id) { |
2637 | assert(re->nhe->id == re->nhe_id); | |
2638 | route_entry_update_nhe(re, NULL); | |
2639 | } else if (re->nhe && re->nhe->nhg.nexthop) | |
2640 | nexthops_free(re->nhe->nhg.nexthop); | |
e22e8001 | 2641 | |
d7ac4c4d DS |
2642 | nexthops_free(re->fib_ng.nexthop); |
2643 | } | |
e22e8001 | 2644 | |
d7ac4c4d DS |
2645 | struct zebra_early_route { |
2646 | afi_t afi; | |
2647 | safi_t safi; | |
2648 | struct prefix p; | |
2649 | struct prefix_ipv6 src_p; | |
2650 | bool src_p_provided; | |
2651 | struct route_entry *re; | |
2652 | struct nhg_hash_entry *re_nhe; | |
2653 | bool startup; | |
2654 | bool deletion; | |
2655 | bool fromkernel; | |
2656 | }; | |
e22e8001 | 2657 | |
d7ac4c4d DS |
2658 | static void early_route_memory_free(struct zebra_early_route *ere) |
2659 | { | |
2660 | if (ere->re_nhe) | |
2661 | zebra_nhg_free(ere->re_nhe); | |
e22e8001 | 2662 | |
d7ac4c4d DS |
2663 | XFREE(MTYPE_RE, ere->re); |
2664 | XFREE(MTYPE_WQ_WRAPPER, ere); | |
e96f9203 DO |
2665 | } |
2666 | ||
d7ac4c4d | 2667 | static void process_subq_early_route_add(struct zebra_early_route *ere) |
e96f9203 | 2668 | { |
d7ac4c4d DS |
2669 | struct route_entry *re = ere->re; |
2670 | struct route_table *table; | |
2671 | struct nhg_hash_entry *nhe = NULL; | |
2672 | struct route_node *rn; | |
2673 | struct route_entry *same = NULL, *first_same = NULL; | |
2674 | int same_count = 0; | |
2675 | rib_dest_t *dest; | |
91f16812 | 2676 | |
d7ac4c4d DS |
2677 | /* Lookup table. */ |
2678 | table = zebra_vrf_get_table_with_table_id(ere->afi, ere->safi, | |
2679 | re->vrf_id, re->table); | |
2680 | if (!table) { | |
2681 | early_route_memory_free(ere); | |
2682 | return; | |
2683 | } | |
91f16812 | 2684 | |
d7ac4c4d DS |
2685 | if (re->nhe_id > 0) { |
2686 | nhe = zebra_nhg_lookup_id(re->nhe_id); | |
91f16812 | 2687 | |
d7ac4c4d DS |
2688 | if (!nhe) { |
2689 | /* | |
2690 | * We've received from the kernel a nexthop id | |
2691 | * that we don't have saved yet. More than likely | |
2692 | * it has not been processed and is on the | |
2693 | * queue to be processed. Let's stop what we | |
2694 | * are doing and cause the meta q to be processed | |
2695 | * storing this for later. | |
2696 | * | |
2697 | * This is being done this way because zebra | |
2698 | * runs with the assumption t | |
2699 | */ | |
2700 | flog_err( | |
2701 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
2702 | "Zebra failed to find the nexthop hash entry for id=%u in a route entry %pFX", | |
2703 | re->nhe_id, &ere->p); | |
5110a0c6 | 2704 | |
d7ac4c4d DS |
2705 | early_route_memory_free(ere); |
2706 | return; | |
d62a17ae | 2707 | } |
d7ac4c4d DS |
2708 | } else { |
2709 | /* Lookup nhe from route information */ | |
2710 | nhe = zebra_nhg_rib_find_nhe(ere->re_nhe, ere->afi); | |
2711 | if (!nhe) { | |
2712 | char buf2[PREFIX_STRLEN] = ""; | |
e96f9203 | 2713 | |
d7ac4c4d DS |
2714 | flog_err( |
2715 | EC_ZEBRA_TABLE_LOOKUP_FAILED, | |
2716 | "Zebra failed to find or create a nexthop hash entry for %pFX%s%s", | |
2717 | &ere->p, ere->src_p_provided ? " from " : "", | |
2718 | ere->src_p_provided | |
2719 | ? prefix2str(&ere->src_p, buf2, | |
2720 | sizeof(buf2)) | |
2721 | : ""); | |
f52ed677 | 2722 | |
d7ac4c4d DS |
2723 | early_route_memory_free(ere); |
2724 | return; | |
2725 | } | |
2726 | } | |
5110a0c6 | 2727 | |
d7ac4c4d DS |
2728 | /* |
2729 | * Attach the re to the nhe's nexthop group. | |
2730 | * | |
2731 | * TODO: This will need to change when we start getting IDs from upper | |
2732 | * level protocols, as the refcnt might be wrong, since it checks | |
2733 | * if old_id != new_id. | |
2734 | */ | |
2735 | route_entry_update_nhe(re, nhe); | |
e22e8001 | 2736 | |
d7ac4c4d DS |
2737 | /* Make it sure prefixlen is applied to the prefix. */ |
2738 | apply_mask(&ere->p); | |
2739 | if (ere->src_p_provided) | |
2740 | apply_mask_ipv6(&ere->src_p); | |
d62a17ae | 2741 | |
d7ac4c4d DS |
2742 | /* Lookup route node.*/ |
2743 | rn = srcdest_rnode_get(table, &ere->p, | |
2744 | ere->src_p_provided ? &ere->src_p : NULL); | |
2745 | ||
2746 | /* | |
2747 | * If same type of route are installed, treat it as a implicit | |
2748 | * withdraw. If the user has specified the No route replace semantics | |
2749 | * for the install don't do a route replace. | |
2750 | */ | |
2751 | RNODE_FOREACH_RE (rn, same) { | |
2752 | if (CHECK_FLAG(same->status, ROUTE_ENTRY_REMOVED)) { | |
2753 | same_count++; | |
2754 | continue; | |
d62a17ae | 2755 | } |
5110a0c6 | 2756 | |
d7ac4c4d DS |
2757 | /* Compare various route_entry properties */ |
2758 | if (rib_compare_routes(re, same)) { | |
2759 | same_count++; | |
5110a0c6 | 2760 | |
d7ac4c4d DS |
2761 | if (first_same == NULL) |
2762 | first_same = same; | |
2763 | } | |
d62a17ae | 2764 | } |
f52ed677 | 2765 | |
d7ac4c4d | 2766 | same = first_same; |
e22e8001 | 2767 | |
d7ac4c4d DS |
2768 | if (!ere->startup && (re->flags & ZEBRA_FLAG_SELFROUTE) && |
2769 | zrouter.asic_offloaded) { | |
2770 | if (!same) { | |
2771 | if (IS_ZEBRA_DEBUG_RIB) | |
2772 | zlog_debug( | |
2773 | "prefix: %pRN is a self route where we do not have an entry for it. Dropping this update, it's useless", | |
2774 | rn); | |
2775 | /* | |
2776 | * We are not on startup, this is a self route | |
2777 | * and we have asic offload. Which means | |
2778 | * we are getting a callback for a entry | |
2779 | * that was already deleted to the kernel | |
2780 | * but an earlier response was just handed | |
2781 | * back. Drop it on the floor | |
2782 | */ | |
2783 | early_route_memory_free(ere); | |
2784 | return; | |
2785 | } | |
2786 | } | |
4d38fdb4 | 2787 | |
1cd8bd05 DS |
2788 | /* Set default distance by route type. */ |
2789 | if (re->distance == 0) { | |
2790 | if (same && !zebra_router_notify_on_ack()) | |
2791 | re->distance = same->distance; | |
2792 | else | |
2793 | re->distance = route_distance(re->type); | |
2794 | } | |
2795 | ||
68ff69fa DS |
2796 | if (re->metric == ROUTE_INSTALLATION_METRIC && |
2797 | CHECK_FLAG(re->flags, ZEBRA_FLAG_SELFROUTE)) { | |
2798 | if (same && !zebra_router_notify_on_ack()) | |
2799 | re->metric = same->metric; | |
2800 | else | |
2801 | re->metric = 0; | |
2802 | } | |
2803 | ||
d7ac4c4d DS |
2804 | /* If this route is kernel/connected route, notify the dataplane. */ |
2805 | if (RIB_SYSTEM_ROUTE(re)) { | |
2806 | /* Notify dataplane */ | |
2807 | dplane_sys_route_add(rn, re); | |
2808 | } | |
53216dff | 2809 | |
d7ac4c4d DS |
2810 | /* Link new re to node.*/ |
2811 | if (IS_ZEBRA_DEBUG_RIB) { | |
2812 | rnode_debug( | |
2813 | rn, re->vrf_id, | |
2814 | "Inserting route rn %p, re %p (%s) existing %p, same_count %d", | |
2815 | rn, re, zebra_route_string(re->type), same, same_count); | |
fc328ac9 | 2816 | |
d7ac4c4d DS |
2817 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
2818 | route_entry_dump( | |
2819 | &ere->p, | |
2820 | ere->src_p_provided ? &ere->src_p : NULL, re); | |
2821 | } | |
e22e8001 | 2822 | |
d7ac4c4d DS |
2823 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
2824 | rib_addnode(rn, re, 1); | |
4d38fdb4 | 2825 | |
d7ac4c4d DS |
2826 | /* Free implicit route.*/ |
2827 | if (same) | |
2828 | rib_delnode(rn, same); | |
04bec7b2 | 2829 | |
d7ac4c4d DS |
2830 | /* See if we can remove some RE entries that are queued for |
2831 | * removal, but won't be considered in rib processing. | |
2832 | */ | |
2833 | dest = rib_dest_from_rnode(rn); | |
2834 | RNODE_FOREACH_RE_SAFE (rn, re, same) { | |
2835 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
2836 | /* If the route was used earlier, must retain it. */ | |
2837 | if (dest && re == dest->selected_fib) | |
2838 | continue; | |
04bec7b2 | 2839 | |
d7ac4c4d DS |
2840 | if (IS_ZEBRA_DEBUG_RIB) |
2841 | rnode_debug(rn, re->vrf_id, | |
2842 | "rn %p, removing unneeded re %p", | |
2843 | rn, re); | |
e22e8001 | 2844 | |
d7ac4c4d DS |
2845 | rib_unlink(rn, re); |
2846 | } | |
2847 | } | |
e22e8001 | 2848 | |
d7ac4c4d DS |
2849 | route_unlock_node(rn); |
2850 | if (ere->re_nhe) | |
2851 | zebra_nhg_free(ere->re_nhe); | |
2852 | XFREE(MTYPE_WQ_WRAPPER, ere); | |
e22e8001 SW |
2853 | } |
2854 | ||
d7ac4c4d | 2855 | static void process_subq_early_route_delete(struct zebra_early_route *ere) |
04bec7b2 | 2856 | { |
d7ac4c4d DS |
2857 | struct route_table *table; |
2858 | struct route_node *rn; | |
2859 | struct route_entry *re; | |
2860 | struct route_entry *fib = NULL; | |
2861 | struct route_entry *same = NULL; | |
2862 | struct nexthop *rtnh; | |
2863 | char buf2[INET6_ADDRSTRLEN]; | |
2864 | rib_dest_t *dest; | |
04bec7b2 | 2865 | |
d7ac4c4d DS |
2866 | if (ere->src_p_provided) |
2867 | assert(!ere->src_p.prefixlen || ere->afi == AFI_IP6); | |
2868 | ||
2869 | /* Lookup table. */ | |
2870 | table = zebra_vrf_lookup_table_with_table_id( | |
2871 | ere->afi, ere->safi, ere->re->vrf_id, ere->re->table); | |
2872 | if (!table) { | |
2873 | early_route_memory_free(ere); | |
2874 | return; | |
2875 | } | |
2876 | ||
2877 | /* Apply mask. */ | |
2878 | apply_mask(&ere->p); | |
2879 | if (ere->src_p_provided) | |
2880 | apply_mask_ipv6(&ere->src_p); | |
2881 | ||
2882 | /* Lookup route node. */ | |
2883 | rn = srcdest_rnode_lookup(table, &ere->p, | |
2884 | ere->src_p_provided ? &ere->src_p : NULL); | |
2885 | if (!rn) { | |
2886 | if (IS_ZEBRA_DEBUG_RIB) { | |
2887 | char src_buf[PREFIX_STRLEN]; | |
2888 | struct vrf *vrf = vrf_lookup_by_id(ere->re->vrf_id); | |
2889 | ||
2890 | if (ere->src_p_provided && ere->src_p.prefixlen) | |
2891 | prefix2str(&ere->src_p, src_buf, | |
2892 | sizeof(src_buf)); | |
2893 | else | |
2894 | src_buf[0] = '\0'; | |
2895 | ||
2896 | zlog_debug("%s[%d]:%pRN%s%s doesn't exist in rib", | |
2897 | vrf->name, ere->re->table, rn, | |
2898 | (src_buf[0] != '\0') ? " from " : "", | |
2899 | src_buf); | |
2900 | } | |
2901 | early_route_memory_free(ere); | |
2902 | return; | |
2903 | } | |
2904 | ||
2905 | dest = rib_dest_from_rnode(rn); | |
2906 | fib = dest->selected_fib; | |
2907 | ||
2908 | struct nexthop *nh = NULL; | |
2909 | ||
2910 | if (ere->re->nhe) | |
2911 | nh = ere->re->nhe->nhg.nexthop; | |
2912 | ||
2913 | /* Lookup same type route. */ | |
2914 | RNODE_FOREACH_RE (rn, re) { | |
2915 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2916 | continue; | |
2917 | ||
2918 | if (re->type != ere->re->type) | |
2919 | continue; | |
2920 | if (re->instance != ere->re->instance) | |
2921 | continue; | |
2922 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_RR_USE_DISTANCE) && | |
2923 | ere->re->distance != re->distance) | |
2924 | continue; | |
2925 | ||
2926 | if (re->type == ZEBRA_ROUTE_KERNEL && | |
2927 | re->metric != ere->re->metric) | |
2928 | continue; | |
2929 | if (re->type == ZEBRA_ROUTE_CONNECT && (rtnh = nh) && | |
2930 | rtnh->type == NEXTHOP_TYPE_IFINDEX && nh) { | |
2931 | if (rtnh->ifindex != nh->ifindex) | |
2932 | continue; | |
2933 | same = re; | |
2934 | break; | |
2935 | } | |
2936 | ||
2937 | /* Make sure that the route found has the same gateway. */ | |
2938 | if (ere->re->nhe_id && re->nhe_id == ere->re->nhe_id) { | |
2939 | same = re; | |
2940 | break; | |
2941 | } | |
2942 | ||
2943 | if (nh == NULL) { | |
2944 | same = re; | |
2945 | break; | |
2946 | } | |
2947 | for (ALL_NEXTHOPS(re->nhe->nhg, rtnh)) { | |
2948 | /* | |
2949 | * No guarantee all kernel send nh with labels | |
2950 | * on delete. | |
2951 | */ | |
2952 | if (nexthop_same_no_labels(rtnh, nh)) { | |
2953 | same = re; | |
2954 | break; | |
2955 | } | |
2956 | } | |
2957 | ||
2958 | if (same) | |
2959 | break; | |
2960 | } | |
2961 | /* | |
2962 | * If same type of route can't be found and this message is from | |
2963 | * kernel. | |
2964 | */ | |
2965 | if (!same) { | |
2966 | /* | |
2967 | * In the past(HA!) we could get here because | |
2968 | * we were receiving a route delete from the | |
2969 | * kernel and we're not marking the proto | |
2970 | * as coming from it's appropriate originator. | |
2971 | * Now that we are properly noticing the fact | |
2972 | * that the kernel has deleted our route we | |
2973 | * are not going to get called in this path | |
2974 | * I am going to leave this here because | |
2975 | * this might still work this way on non-linux | |
2976 | * platforms as well as some weird state I have | |
2977 | * not properly thought of yet. | |
2978 | * If we can show that this code path is | |
2979 | * dead then we can remove it. | |
2980 | */ | |
2981 | if (fib && CHECK_FLAG(ere->re->flags, ZEBRA_FLAG_SELFROUTE)) { | |
2982 | if (IS_ZEBRA_DEBUG_RIB) { | |
2983 | rnode_debug( | |
2984 | rn, ere->re->vrf_id, | |
2985 | "rn %p, re %p (%s) was deleted from kernel, adding", | |
2986 | rn, fib, zebra_route_string(fib->type)); | |
2987 | } | |
2988 | if (zrouter.allow_delete || | |
2989 | CHECK_FLAG(dest->flags, RIB_ROUTE_ANY_QUEUED)) { | |
2990 | UNSET_FLAG(fib->status, ROUTE_ENTRY_INSTALLED); | |
2991 | /* Unset flags. */ | |
2992 | for (rtnh = fib->nhe->nhg.nexthop; rtnh; | |
2993 | rtnh = rtnh->next) | |
2994 | UNSET_FLAG(rtnh->flags, | |
2995 | NEXTHOP_FLAG_FIB); | |
2996 | ||
2997 | /* | |
2998 | * This is a non FRR route | |
2999 | * as such we should mark | |
3000 | * it as deleted | |
3001 | */ | |
3002 | dest->selected_fib = NULL; | |
3003 | } else { | |
3004 | /* | |
3005 | * This means someone else, other than Zebra, | |
3006 | * has deleted a Zebra router from the kernel. | |
3007 | * We will add it back | |
3008 | */ | |
3009 | rib_install_kernel(rn, fib, NULL); | |
3010 | } | |
3011 | } else { | |
3012 | if (IS_ZEBRA_DEBUG_RIB) { | |
3013 | if (nh) | |
3014 | rnode_debug( | |
3015 | rn, ere->re->vrf_id, | |
3016 | "via %s ifindex %d type %d doesn't exist in rib", | |
3017 | inet_ntop(afi2family(ere->afi), | |
3018 | &nh->gate, buf2, | |
3019 | sizeof(buf2)), | |
3020 | nh->ifindex, ere->re->type); | |
3021 | else | |
3022 | rnode_debug( | |
3023 | rn, ere->re->vrf_id, | |
3024 | "type %d doesn't exist in rib", | |
3025 | ere->re->type); | |
3026 | } | |
3027 | route_unlock_node(rn); | |
3028 | early_route_memory_free(ere); | |
3029 | return; | |
3030 | } | |
3031 | } | |
3032 | ||
3033 | if (same) { | |
3034 | struct nexthop *tmp_nh; | |
3035 | ||
3036 | if (ere->fromkernel && | |
3037 | CHECK_FLAG(ere->re->flags, ZEBRA_FLAG_SELFROUTE) && | |
3038 | !zrouter.allow_delete) { | |
3039 | rib_install_kernel(rn, same, NULL); | |
3040 | route_unlock_node(rn); | |
3041 | ||
3042 | early_route_memory_free(ere); | |
3043 | return; | |
3044 | } | |
3045 | ||
3046 | /* Special handling for IPv4 or IPv6 routes sourced from | |
3047 | * EVPN - the nexthop (and associated MAC) need to be | |
3048 | * uninstalled if no more refs. | |
3049 | */ | |
3050 | for (ALL_NEXTHOPS(re->nhe->nhg, tmp_nh)) { | |
3051 | struct ipaddr vtep_ip; | |
3052 | ||
3053 | if (CHECK_FLAG(tmp_nh->flags, NEXTHOP_FLAG_EVPN)) { | |
3054 | memset(&vtep_ip, 0, sizeof(struct ipaddr)); | |
3055 | if (ere->afi == AFI_IP) { | |
3056 | vtep_ip.ipa_type = IPADDR_V4; | |
3057 | memcpy(&(vtep_ip.ipaddr_v4), | |
3058 | &(tmp_nh->gate.ipv4), | |
3059 | sizeof(struct in_addr)); | |
3060 | } else { | |
3061 | vtep_ip.ipa_type = IPADDR_V6; | |
3062 | memcpy(&(vtep_ip.ipaddr_v6), | |
3063 | &(tmp_nh->gate.ipv6), | |
3064 | sizeof(struct in6_addr)); | |
3065 | } | |
3066 | zebra_rib_queue_evpn_route_del( | |
3067 | re->vrf_id, &vtep_ip, &ere->p); | |
3068 | } | |
3069 | } | |
3070 | ||
3071 | /* Notify dplane if system route changes */ | |
3072 | if (RIB_SYSTEM_ROUTE(re)) | |
3073 | dplane_sys_route_del(rn, same); | |
3074 | ||
3075 | rib_delnode(rn, same); | |
3076 | } | |
3077 | ||
3078 | route_unlock_node(rn); | |
3079 | ||
3080 | early_route_memory_free(ere); | |
3081 | } | |
3082 | ||
3083 | /* | |
3084 | * When FRR receives a route we need to match the route up to | |
3085 | * nexthop groups. That we also may have just received | |
3086 | * place the data on this queue so that this work of finding | |
3087 | * the nexthop group entries for the route entry is always | |
3088 | * done after the nexthop group has had a chance to be processed | |
3089 | */ | |
3090 | static void process_subq_early_route(struct listnode *lnode) | |
3091 | { | |
3092 | struct zebra_early_route *ere = listgetdata(lnode); | |
3093 | ||
3094 | if (ere->deletion) | |
3095 | process_subq_early_route_delete(ere); | |
3096 | else | |
3097 | process_subq_early_route_add(ere); | |
3098 | } | |
3099 | ||
81322b96 DS |
3100 | struct meta_q_gr_run { |
3101 | afi_t afi; | |
3102 | vrf_id_t vrf_id; | |
3103 | uint8_t proto; | |
3104 | uint8_t instance; | |
3105 | }; | |
3106 | ||
3107 | static void process_subq_gr_run(struct listnode *lnode) | |
3108 | { | |
3109 | struct meta_q_gr_run *gr_run = listgetdata(lnode); | |
3110 | ||
3111 | zebra_gr_process_client(gr_run->afi, gr_run->vrf_id, gr_run->proto, | |
3112 | gr_run->instance); | |
3113 | ||
3114 | XFREE(MTYPE_WQ_WRAPPER, gr_run); | |
3115 | } | |
3116 | ||
d7ac4c4d DS |
3117 | /* |
3118 | * Examine the specified subqueue; process one entry and return 1 if | |
3119 | * there is a node, return 0 otherwise. | |
3120 | */ | |
3121 | static unsigned int process_subq(struct list *subq, | |
3122 | enum meta_queue_indexes qindex) | |
3123 | { | |
3124 | struct listnode *lnode = listhead(subq); | |
3125 | ||
3126 | if (!lnode) | |
3127 | return 0; | |
3128 | ||
3129 | switch (qindex) { | |
3130 | case META_QUEUE_EVPN: | |
3131 | process_subq_evpn(lnode); | |
3132 | break; | |
3133 | case META_QUEUE_NHG: | |
3134 | process_subq_nhg(lnode); | |
3135 | break; | |
3136 | case META_QUEUE_EARLY_ROUTE: | |
3137 | process_subq_early_route(lnode); | |
3138 | break; | |
3139 | case META_QUEUE_EARLY_LABEL: | |
3140 | process_subq_early_label(lnode); | |
3141 | break; | |
3142 | case META_QUEUE_CONNECTED: | |
3143 | case META_QUEUE_KERNEL: | |
3144 | case META_QUEUE_STATIC: | |
3145 | case META_QUEUE_NOTBGP: | |
3146 | case META_QUEUE_BGP: | |
3147 | case META_QUEUE_OTHER: | |
3148 | process_subq_route(lnode, qindex); | |
3149 | break; | |
81322b96 DS |
3150 | case META_QUEUE_GR_RUN: |
3151 | process_subq_gr_run(lnode); | |
3152 | break; | |
d7ac4c4d DS |
3153 | } |
3154 | ||
3155 | list_delete_node(subq, lnode); | |
3156 | ||
3157 | return 1; | |
3158 | } | |
3159 | ||
3160 | /* Dispatch the meta queue by picking and processing the next node from | |
3161 | * a non-empty sub-queue with lowest priority. wq is equal to zebra->ribq and | |
3162 | * data is pointed to the meta queue structure. | |
3163 | */ | |
3164 | static wq_item_status meta_queue_process(struct work_queue *dummy, void *data) | |
3165 | { | |
3166 | struct meta_queue *mq = data; | |
3167 | unsigned i; | |
3168 | uint32_t queue_len, queue_limit; | |
3169 | ||
3170 | /* Ensure there's room for more dataplane updates */ | |
3171 | queue_limit = dplane_get_in_queue_limit(); | |
3172 | queue_len = dplane_get_in_queue_len(); | |
3173 | if (queue_len > queue_limit) { | |
3174 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3175 | zlog_debug( | |
3176 | "rib queue: dplane queue len %u, limit %u, retrying", | |
3177 | queue_len, queue_limit); | |
3178 | ||
3179 | /* Ensure that the meta-queue is actually enqueued */ | |
3180 | if (work_queue_empty(zrouter.ribq)) | |
3181 | work_queue_add(zrouter.ribq, zrouter.mq); | |
3182 | ||
3183 | return WQ_QUEUE_BLOCKED; | |
3184 | } | |
3185 | ||
3186 | for (i = 0; i < MQ_SIZE; i++) | |
3187 | if (process_subq(mq->subq[i], i)) { | |
3188 | mq->size--; | |
3189 | break; | |
3190 | } | |
3191 | return mq->size ? WQ_REQUEUE : WQ_SUCCESS; | |
3192 | } | |
3193 | ||
3194 | ||
3195 | /* | |
3196 | * Look into the RN and queue it into the highest priority queue | |
3197 | * at this point in time for processing. | |
3198 | * | |
3199 | * We will enqueue a route node only once per invocation. | |
3200 | * | |
3201 | * There are two possibilities here that should be kept in mind. | |
3202 | * If the original invocation has not been pulled off for processing | |
3203 | * yet, A subsuquent invocation can have a route entry with a better | |
3204 | * meta queue index value and we can have a situation where | |
3205 | * we might have the same node enqueued 2 times. Not necessarily | |
3206 | * an optimal situation but it should be ok. | |
3207 | * | |
3208 | * The other possibility is that the original invocation has not | |
3209 | * been pulled off for processing yet, A subsusquent invocation | |
3210 | * doesn't have a route_entry with a better meta-queue and the | |
3211 | * original metaqueue index value will win and we'll end up with | |
3212 | * the route node enqueued once. | |
3213 | */ | |
3214 | static int rib_meta_queue_add(struct meta_queue *mq, void *data) | |
3215 | { | |
3216 | struct route_node *rn = NULL; | |
3217 | struct route_entry *re = NULL, *curr_re = NULL; | |
3218 | uint8_t qindex = MQ_SIZE, curr_qindex = MQ_SIZE; | |
3219 | ||
3220 | rn = (struct route_node *)data; | |
3221 | ||
3222 | RNODE_FOREACH_RE (rn, curr_re) { | |
3223 | curr_qindex = route_info[curr_re->type].meta_q_map; | |
3224 | ||
3225 | if (curr_qindex <= qindex) { | |
3226 | re = curr_re; | |
3227 | qindex = curr_qindex; | |
3228 | } | |
3229 | } | |
3230 | ||
3231 | if (!re) | |
3232 | return -1; | |
3233 | ||
3234 | /* Invariant: at this point we always have rn->info set. */ | |
3235 | if (CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
3236 | RIB_ROUTE_QUEUED(qindex))) { | |
3237 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3238 | rnode_debug(rn, re->vrf_id, | |
3239 | "rn %p is already queued in sub-queue %s", | |
3240 | (void *)rn, subqueue2str(qindex)); | |
3241 | return -1; | |
3242 | } | |
3243 | ||
3244 | SET_FLAG(rib_dest_from_rnode(rn)->flags, RIB_ROUTE_QUEUED(qindex)); | |
3245 | listnode_add(mq->subq[qindex], rn); | |
3246 | route_lock_node(rn); | |
3247 | mq->size++; | |
3248 | ||
3249 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3250 | rnode_debug(rn, re->vrf_id, "queued rn %p into sub-queue %s", | |
3251 | (void *)rn, subqueue2str(qindex)); | |
3252 | ||
3253 | return 0; | |
3254 | } | |
3255 | ||
3256 | static int early_label_meta_queue_add(struct meta_queue *mq, void *data) | |
3257 | { | |
3258 | listnode_add(mq->subq[META_QUEUE_EARLY_LABEL], data); | |
3259 | mq->size++; | |
3260 | return 0; | |
3261 | } | |
3262 | ||
3263 | static int rib_meta_queue_nhg_ctx_add(struct meta_queue *mq, void *data) | |
3264 | { | |
3265 | struct nhg_ctx *ctx = NULL; | |
3266 | uint8_t qindex = META_QUEUE_NHG; | |
3267 | struct wq_nhg_wrapper *w; | |
3268 | ||
3269 | ctx = (struct nhg_ctx *)data; | |
3270 | ||
3271 | if (!ctx) | |
3272 | return -1; | |
3273 | ||
3274 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); | |
3275 | ||
3276 | w->type = WQ_NHG_WRAPPER_TYPE_CTX; | |
3277 | w->u.ctx = ctx; | |
3278 | ||
3279 | listnode_add(mq->subq[qindex], w); | |
3280 | mq->size++; | |
3281 | ||
3282 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3283 | zlog_debug("NHG Context id=%u queued into sub-queue %s", | |
3284 | ctx->id, subqueue2str(qindex)); | |
3285 | ||
3286 | return 0; | |
3287 | } | |
3288 | ||
3289 | static int rib_meta_queue_nhg_add(struct meta_queue *mq, void *data) | |
3290 | { | |
3291 | struct nhg_hash_entry *nhe = NULL; | |
3292 | uint8_t qindex = META_QUEUE_NHG; | |
3293 | struct wq_nhg_wrapper *w; | |
3294 | ||
3295 | nhe = (struct nhg_hash_entry *)data; | |
04bec7b2 MS |
3296 | |
3297 | if (!nhe) | |
3298 | return -1; | |
3299 | ||
32367e7a | 3300 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_nhg_wrapper)); |
04bec7b2 MS |
3301 | |
3302 | w->type = WQ_NHG_WRAPPER_TYPE_NHG; | |
3303 | w->u.nhe = nhe; | |
3304 | ||
3305 | listnode_add(mq->subq[qindex], w); | |
3306 | mq->size++; | |
3307 | ||
3308 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
7a96ccc7 DS |
3309 | zlog_debug("NHG id=%u queued into sub-queue %s", nhe->id, |
3310 | subqueue2str(qindex)); | |
04bec7b2 MS |
3311 | |
3312 | return 0; | |
3313 | } | |
3314 | ||
32367e7a MS |
3315 | static int rib_meta_queue_evpn_add(struct meta_queue *mq, void *data) |
3316 | { | |
3317 | listnode_add(mq->subq[META_QUEUE_EVPN], data); | |
3318 | mq->size++; | |
3319 | ||
3320 | return 0; | |
3321 | } | |
3322 | ||
e22e8001 SW |
3323 | static int mq_add_handler(void *data, |
3324 | int (*mq_add_func)(struct meta_queue *mq, void *data)) | |
3325 | { | |
489a9614 | 3326 | if (zrouter.ribq == NULL) { |
e914ccbe | 3327 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3328 | "%s: work_queue does not exist!", __func__); |
e22e8001 | 3329 | return -1; |
d62a17ae | 3330 | } |
3331 | ||
3332 | /* | |
3333 | * The RIB queue should normally be either empty or holding the only | |
3334 | * work_queue_item element. In the latter case this element would | |
3335 | * hold a pointer to the meta queue structure, which must be used to | |
3336 | * actually queue the route nodes to process. So create the MQ | |
3337 | * holder, if necessary, then push the work into it in any case. | |
3338 | * This semantics was introduced after 0.99.9 release. | |
3339 | */ | |
489a9614 | 3340 | if (work_queue_empty(zrouter.ribq)) |
ea45a4e7 | 3341 | work_queue_add(zrouter.ribq, zrouter.mq); |
e96f9203 | 3342 | |
e22e8001 SW |
3343 | return mq_add_func(zrouter.mq, data); |
3344 | } | |
fc328ac9 | 3345 | |
53216dff DS |
3346 | void mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3347 | struct prefix *prefix, uint8_t route_type, | |
3348 | uint8_t route_instance) | |
3349 | { | |
3350 | struct wq_label_wrapper *w; | |
3351 | ||
3352 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_label_wrapper)); | |
3353 | ||
3354 | w->type = WQ_LABEL_FTN_UNINSTALL; | |
3355 | w->vrf_id = zvrf->vrf->vrf_id; | |
3356 | w->p = *prefix; | |
3357 | w->ltype = type; | |
3358 | w->route_type = route_type; | |
3359 | w->route_instance = route_instance; | |
3360 | ||
3361 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3362 | zlog_debug("Early Label Handling for %pFX", prefix); | |
3363 | ||
3364 | mq_add_handler(w, early_label_meta_queue_add); | |
3365 | } | |
3366 | ||
3367 | void mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, | |
3368 | const struct zapi_labels *zl) | |
3369 | { | |
3370 | struct wq_label_wrapper *w; | |
3371 | ||
3372 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_label_wrapper)); | |
3373 | w->type = WQ_LABEL_LABELS_PROCESS; | |
3374 | w->vrf_id = zvrf->vrf->vrf_id; | |
3375 | w->add_p = add_p; | |
3376 | w->zl = *zl; | |
3377 | ||
3378 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3379 | zlog_debug("Early Label Handling: Labels Process"); | |
3380 | ||
3381 | mq_add_handler(w, early_label_meta_queue_add); | |
3382 | } | |
3383 | ||
e22e8001 SW |
3384 | /* Add route_node to work queue and schedule processing */ |
3385 | int rib_queue_add(struct route_node *rn) | |
3386 | { | |
3387 | assert(rn); | |
3388 | ||
3389 | /* Pointless to queue a route_node with no RIB entries to add or remove | |
3390 | */ | |
3391 | if (!rnode_to_ribs(rn)) { | |
c10e14e9 DS |
3392 | zlog_debug("%s: called for route_node (%p, %u) with no ribs", |
3393 | __func__, (void *)rn, route_node_get_lock_count(rn)); | |
e22e8001 SW |
3394 | zlog_backtrace(LOG_DEBUG); |
3395 | return -1; | |
3396 | } | |
3397 | ||
04bec7b2 | 3398 | return mq_add_handler(rn, rib_meta_queue_add); |
e22e8001 SW |
3399 | } |
3400 | ||
04bec7b2 MS |
3401 | /* |
3402 | * Enqueue incoming nhg info from OS for processing | |
3403 | */ | |
3404 | int rib_queue_nhg_ctx_add(struct nhg_ctx *ctx) | |
e22e8001 SW |
3405 | { |
3406 | assert(ctx); | |
3407 | ||
04bec7b2 MS |
3408 | return mq_add_handler(ctx, rib_meta_queue_nhg_ctx_add); |
3409 | } | |
3410 | ||
3411 | /* | |
3412 | * Enqueue incoming nhg from proto daemon for processing | |
3413 | */ | |
3414 | int rib_queue_nhe_add(struct nhg_hash_entry *nhe) | |
3415 | { | |
3416 | if (nhe == NULL) | |
3417 | return -1; | |
3418 | ||
3419 | return mq_add_handler(nhe, rib_meta_queue_nhg_add); | |
3420 | } | |
3421 | ||
32367e7a MS |
3422 | /* |
3423 | * Enqueue evpn route for processing | |
3424 | */ | |
3425 | int zebra_rib_queue_evpn_route_add(vrf_id_t vrf_id, const struct ethaddr *rmac, | |
3426 | const struct ipaddr *vtep_ip, | |
3427 | const struct prefix *host_prefix) | |
3428 | { | |
3429 | struct wq_evpn_wrapper *w; | |
3430 | ||
3431 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3432 | ||
3433 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
3434 | w->add_p = true; | |
3435 | w->vrf_id = vrf_id; | |
7f7e49d1 | 3436 | w->macaddr = *rmac; |
32367e7a MS |
3437 | w->ip = *vtep_ip; |
3438 | w->prefix = *host_prefix; | |
3439 | ||
3440 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3441 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
3442 | vrf_id, vtep_ip, host_prefix); | |
3443 | ||
3444 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3445 | } | |
3446 | ||
3447 | int zebra_rib_queue_evpn_route_del(vrf_id_t vrf_id, | |
3448 | const struct ipaddr *vtep_ip, | |
3449 | const struct prefix *host_prefix) | |
3450 | { | |
3451 | struct wq_evpn_wrapper *w; | |
3452 | ||
3453 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3454 | ||
3455 | w->type = WQ_EVPN_WRAPPER_TYPE_VRFROUTE; | |
3456 | w->add_p = false; | |
3457 | w->vrf_id = vrf_id; | |
3458 | w->ip = *vtep_ip; | |
3459 | w->prefix = *host_prefix; | |
3460 | ||
3461 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3462 | zlog_debug("%s: (%u)%pIA, host prefix %pFX enqueued", __func__, | |
3463 | vrf_id, vtep_ip, host_prefix); | |
3464 | ||
3465 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3466 | } | |
3467 | ||
3468 | /* Enqueue EVPN remote ES for processing */ | |
3469 | int zebra_rib_queue_evpn_rem_es_add(const esi_t *esi, | |
3470 | const struct in_addr *vtep_ip, | |
3471 | bool esr_rxed, uint8_t df_alg, | |
3472 | uint16_t df_pref) | |
3473 | { | |
3474 | struct wq_evpn_wrapper *w; | |
3475 | char buf[ESI_STR_LEN]; | |
3476 | ||
3477 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3478 | ||
3479 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
3480 | w->add_p = true; | |
3481 | w->esi = *esi; | |
3482 | w->ip.ipa_type = IPADDR_V4; | |
3483 | w->ip.ipaddr_v4 = *vtep_ip; | |
3484 | w->esr_rxed = esr_rxed; | |
3485 | w->df_alg = df_alg; | |
3486 | w->df_pref = df_pref; | |
3487 | ||
3488 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3489 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
3490 | esi_to_str(esi, buf, sizeof(buf))); | |
3491 | ||
3492 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3493 | } | |
3494 | ||
3495 | int zebra_rib_queue_evpn_rem_es_del(const esi_t *esi, | |
3496 | const struct in_addr *vtep_ip) | |
3497 | { | |
3498 | struct wq_evpn_wrapper *w; | |
3499 | char buf[ESI_STR_LEN]; | |
3500 | ||
3501 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3502 | ||
3503 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_ES; | |
3504 | w->add_p = false; | |
3505 | w->esi = *esi; | |
3506 | w->ip.ipa_type = IPADDR_V4; | |
3507 | w->ip.ipaddr_v4 = *vtep_ip; | |
3508 | ||
3509 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
3510 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
3511 | esi_to_str(esi, buf, sizeof(buf)); | |
3512 | else | |
3513 | strlcpy(buf, "-", sizeof(buf)); | |
3514 | ||
3515 | zlog_debug("%s: vtep %pI4, esi %s enqueued", __func__, vtep_ip, | |
3516 | buf); | |
3517 | } | |
3518 | ||
3519 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3520 | } | |
3521 | ||
7f7e49d1 MS |
3522 | /* |
3523 | * Enqueue EVPN remote macip update for processing | |
3524 | */ | |
3525 | int zebra_rib_queue_evpn_rem_macip_add(vni_t vni, const struct ethaddr *macaddr, | |
3526 | const struct ipaddr *ipaddr, | |
3527 | uint8_t flags, uint32_t seq, | |
3528 | struct in_addr vtep_ip, const esi_t *esi) | |
3529 | { | |
3530 | struct wq_evpn_wrapper *w; | |
3531 | char buf[ESI_STR_LEN]; | |
3532 | ||
3533 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3534 | ||
3535 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
3536 | w->add_p = true; | |
3537 | w->vni = vni; | |
3538 | w->macaddr = *macaddr; | |
3539 | w->ip = *ipaddr; | |
3540 | w->flags = flags; | |
3541 | w->seq = seq; | |
3542 | w->vtep_ip = vtep_ip; | |
3543 | w->esi = *esi; | |
3544 | ||
3545 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) { | |
3546 | if (memcmp(esi, zero_esi, sizeof(esi_t)) != 0) | |
3547 | esi_to_str(esi, buf, sizeof(buf)); | |
3548 | else | |
3549 | strlcpy(buf, "-", sizeof(buf)); | |
3550 | ||
3551 | zlog_debug("%s: mac %pEA, vtep %pI4, esi %s enqueued", __func__, | |
3552 | macaddr, &vtep_ip, buf); | |
3553 | } | |
3554 | ||
3555 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3556 | } | |
3557 | ||
3558 | int zebra_rib_queue_evpn_rem_macip_del(vni_t vni, const struct ethaddr *macaddr, | |
3559 | const struct ipaddr *ip, | |
3560 | struct in_addr vtep_ip) | |
3561 | { | |
3562 | struct wq_evpn_wrapper *w; | |
3563 | ||
3564 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3565 | ||
3566 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_MACIP; | |
3567 | w->add_p = false; | |
3568 | w->vni = vni; | |
3569 | w->macaddr = *macaddr; | |
3570 | w->ip = *ip; | |
3571 | w->vtep_ip = vtep_ip; | |
3572 | ||
3573 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3574 | zlog_debug("%s: mac %pEA, vtep %pI4 enqueued", __func__, | |
3575 | macaddr, &vtep_ip); | |
3576 | ||
3577 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3578 | } | |
3579 | ||
7e5b0b2b MS |
3580 | /* |
3581 | * Enqueue remote VTEP address for processing | |
3582 | */ | |
3583 | int zebra_rib_queue_evpn_rem_vtep_add(vrf_id_t vrf_id, vni_t vni, | |
3584 | struct in_addr vtep_ip, int flood_control) | |
3585 | { | |
3586 | struct wq_evpn_wrapper *w; | |
3587 | ||
3588 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3589 | ||
3590 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
3591 | w->add_p = true; | |
3592 | w->vrf_id = vrf_id; | |
3593 | w->vni = vni; | |
3594 | w->vtep_ip = vtep_ip; | |
3595 | w->flags = flood_control; | |
3596 | ||
3597 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3598 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
3599 | &vtep_ip); | |
3600 | ||
3601 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3602 | } | |
3603 | ||
3604 | int zebra_rib_queue_evpn_rem_vtep_del(vrf_id_t vrf_id, vni_t vni, | |
3605 | struct in_addr vtep_ip) | |
3606 | { | |
3607 | struct wq_evpn_wrapper *w; | |
3608 | ||
3609 | w = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(struct wq_evpn_wrapper)); | |
3610 | ||
3611 | w->type = WQ_EVPN_WRAPPER_TYPE_REM_VTEP; | |
3612 | w->add_p = false; | |
3613 | w->vrf_id = vrf_id; | |
3614 | w->vni = vni; | |
3615 | w->vtep_ip = vtep_ip; | |
3616 | ||
3617 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3618 | zlog_debug("%s: vrf %u, vtep %pI4 enqueued", __func__, vrf_id, | |
3619 | &vtep_ip); | |
3620 | ||
3621 | return mq_add_handler(w, rib_meta_queue_evpn_add); | |
3622 | } | |
3623 | ||
a310ebc1 DS |
3624 | /* Create new meta queue. |
3625 | A destructor function doesn't seem to be necessary here. | |
3626 | */ | |
3627 | static struct meta_queue *meta_queue_new(void) | |
3628 | { | |
3629 | struct meta_queue *new; | |
3630 | unsigned i; | |
3631 | ||
3632 | new = XCALLOC(MTYPE_WORK_QUEUE, sizeof(struct meta_queue)); | |
3633 | ||
3634 | for (i = 0; i < MQ_SIZE; i++) { | |
3635 | new->subq[i] = list_new(); | |
3636 | assert(new->subq[i]); | |
3637 | } | |
3638 | ||
3639 | return new; | |
3640 | } | |
3641 | ||
32367e7a | 3642 | /* Clean up the EVPN meta-queue list */ |
a310ebc1 DS |
3643 | static void evpn_meta_queue_free(struct meta_queue *mq, struct list *l, |
3644 | struct zebra_vrf *zvrf) | |
32367e7a | 3645 | { |
a310ebc1 | 3646 | struct listnode *node, *nnode; |
32367e7a MS |
3647 | struct wq_evpn_wrapper *w; |
3648 | ||
3649 | /* Free the node wrapper object, and the struct it wraps */ | |
a310ebc1 DS |
3650 | for (ALL_LIST_ELEMENTS(l, node, nnode, w)) { |
3651 | if (zvrf) { | |
3652 | vrf_id_t vrf_id = zvrf->vrf->vrf_id; | |
3653 | ||
3654 | if (w->vrf_id != vrf_id) | |
3655 | continue; | |
3656 | } | |
3657 | ||
32367e7a MS |
3658 | node->data = NULL; |
3659 | ||
3660 | XFREE(MTYPE_WQ_WRAPPER, w); | |
3661 | ||
3662 | list_delete_node(l, node); | |
a310ebc1 | 3663 | mq->size--; |
32367e7a MS |
3664 | } |
3665 | } | |
3666 | ||
04bec7b2 | 3667 | /* Clean up the nhg meta-queue list */ |
a310ebc1 DS |
3668 | static void nhg_meta_queue_free(struct meta_queue *mq, struct list *l, |
3669 | struct zebra_vrf *zvrf) | |
04bec7b2 MS |
3670 | { |
3671 | struct wq_nhg_wrapper *w; | |
a310ebc1 | 3672 | struct listnode *node, *nnode; |
04bec7b2 MS |
3673 | |
3674 | /* Free the node wrapper object, and the struct it wraps */ | |
a310ebc1 DS |
3675 | for (ALL_LIST_ELEMENTS(l, node, nnode, w)) { |
3676 | if (zvrf) { | |
3677 | vrf_id_t vrf_id = zvrf->vrf->vrf_id; | |
04bec7b2 | 3678 | |
a310ebc1 DS |
3679 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX && |
3680 | w->u.ctx->vrf_id != vrf_id) | |
3681 | continue; | |
3682 | else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG && | |
3683 | w->u.nhe->vrf_id != vrf_id) | |
3684 | continue; | |
3685 | } | |
04bec7b2 MS |
3686 | if (w->type == WQ_NHG_WRAPPER_TYPE_CTX) |
3687 | nhg_ctx_free(&w->u.ctx); | |
3688 | else if (w->type == WQ_NHG_WRAPPER_TYPE_NHG) | |
3689 | zebra_nhg_free(w->u.nhe); | |
3690 | ||
a310ebc1 | 3691 | node->data = NULL; |
32367e7a | 3692 | XFREE(MTYPE_WQ_WRAPPER, w); |
04bec7b2 MS |
3693 | |
3694 | list_delete_node(l, node); | |
a310ebc1 | 3695 | mq->size--; |
04bec7b2 | 3696 | } |
4d38fdb4 | 3697 | } |
3698 | ||
53216dff DS |
3699 | static void early_label_meta_queue_free(struct meta_queue *mq, struct list *l, |
3700 | struct zebra_vrf *zvrf) | |
3701 | { | |
3702 | struct wq_label_wrapper *w; | |
3703 | struct listnode *node, *nnode; | |
3704 | ||
3705 | for (ALL_LIST_ELEMENTS(l, node, nnode, w)) { | |
3706 | if (zvrf && zvrf->vrf->vrf_id != w->vrf_id) | |
3707 | continue; | |
3708 | ||
3709 | switch (w->type) { | |
3710 | case WQ_LABEL_FTN_UNINSTALL: | |
3711 | case WQ_LABEL_LABELS_PROCESS: | |
3712 | break; | |
3713 | } | |
3714 | ||
3715 | node->data = NULL; | |
3716 | XFREE(MTYPE_WQ_WRAPPER, w); | |
3717 | list_delete_node(l, node); | |
3718 | mq->size--; | |
3719 | } | |
3720 | } | |
3721 | ||
a310ebc1 DS |
3722 | static void rib_meta_queue_free(struct meta_queue *mq, struct list *l, |
3723 | struct zebra_vrf *zvrf) | |
e96f9203 | 3724 | { |
a310ebc1 DS |
3725 | struct route_node *rnode; |
3726 | struct listnode *node, *nnode; | |
5110a0c6 | 3727 | |
a310ebc1 DS |
3728 | for (ALL_LIST_ELEMENTS(l, node, nnode, rnode)) { |
3729 | rib_dest_t *dest = rib_dest_from_rnode(rnode); | |
e96f9203 | 3730 | |
a310ebc1 DS |
3731 | if (dest && rib_dest_vrf(dest) != zvrf) |
3732 | continue; | |
5110a0c6 | 3733 | |
a310ebc1 DS |
3734 | route_unlock_node(rnode); |
3735 | node->data = NULL; | |
3736 | list_delete_node(l, node); | |
3737 | mq->size--; | |
3738 | } | |
e96f9203 DO |
3739 | } |
3740 | ||
d7ac4c4d DS |
3741 | static void early_route_meta_queue_free(struct meta_queue *mq, struct list *l, |
3742 | struct zebra_vrf *zvrf) | |
3743 | { | |
739bc9fd | 3744 | struct zebra_early_route *ere; |
d7ac4c4d DS |
3745 | struct listnode *node, *nnode; |
3746 | ||
739bc9fd DS |
3747 | for (ALL_LIST_ELEMENTS(l, node, nnode, ere)) { |
3748 | if (zvrf && ere->re->vrf_id != zvrf->vrf->vrf_id) | |
d7ac4c4d DS |
3749 | continue; |
3750 | ||
739bc9fd | 3751 | early_route_memory_free(ere); |
d7ac4c4d DS |
3752 | node->data = NULL; |
3753 | list_delete_node(l, node); | |
3754 | mq->size--; | |
3755 | } | |
3756 | } | |
a310ebc1 | 3757 | |
81322b96 DS |
3758 | static void rib_meta_queue_gr_run_free(struct meta_queue *mq, struct list *l, |
3759 | struct zebra_vrf *zvrf) | |
3760 | { | |
3761 | struct meta_q_gr_run *gr_run; | |
3762 | struct listnode *node, *nnode; | |
3763 | ||
3764 | for (ALL_LIST_ELEMENTS(l, node, nnode, gr_run)) { | |
3765 | if (zvrf && zvrf->vrf->vrf_id != gr_run->vrf_id) | |
3766 | continue; | |
3767 | ||
3768 | XFREE(MTYPE_WQ_WRAPPER, gr_run); | |
1b192d88 DS |
3769 | node->data = NULL; |
3770 | list_delete_node(l, node); | |
3771 | mq->size--; | |
81322b96 DS |
3772 | } |
3773 | } | |
3774 | ||
a310ebc1 | 3775 | void meta_queue_free(struct meta_queue *mq, struct zebra_vrf *zvrf) |
5a8dfcd8 | 3776 | { |
014e732d | 3777 | enum meta_queue_indexes i; |
5a8dfcd8 | 3778 | |
04bec7b2 MS |
3779 | for (i = 0; i < MQ_SIZE; i++) { |
3780 | /* Some subqueues may need cleanup - nhgs for example */ | |
014e732d DS |
3781 | switch (i) { |
3782 | case META_QUEUE_NHG: | |
a310ebc1 | 3783 | nhg_meta_queue_free(mq, mq->subq[i], zvrf); |
014e732d DS |
3784 | break; |
3785 | case META_QUEUE_EVPN: | |
a310ebc1 | 3786 | evpn_meta_queue_free(mq, mq->subq[i], zvrf); |
014e732d | 3787 | break; |
d7ac4c4d DS |
3788 | case META_QUEUE_EARLY_ROUTE: |
3789 | early_route_meta_queue_free(mq, mq->subq[i], zvrf); | |
3790 | break; | |
53216dff DS |
3791 | case META_QUEUE_EARLY_LABEL: |
3792 | early_label_meta_queue_free(mq, mq->subq[i], zvrf); | |
3793 | break; | |
014e732d DS |
3794 | case META_QUEUE_CONNECTED: |
3795 | case META_QUEUE_KERNEL: | |
3796 | case META_QUEUE_STATIC: | |
3797 | case META_QUEUE_NOTBGP: | |
3798 | case META_QUEUE_BGP: | |
3799 | case META_QUEUE_OTHER: | |
a310ebc1 | 3800 | rib_meta_queue_free(mq, mq->subq[i], zvrf); |
014e732d | 3801 | break; |
81322b96 DS |
3802 | case META_QUEUE_GR_RUN: |
3803 | rib_meta_queue_gr_run_free(mq, mq->subq[i], zvrf); | |
3804 | break; | |
014e732d | 3805 | } |
a310ebc1 DS |
3806 | if (!zvrf) |
3807 | list_delete(&mq->subq[i]); | |
04bec7b2 | 3808 | } |
5a8dfcd8 | 3809 | |
a310ebc1 DS |
3810 | if (!zvrf) |
3811 | XFREE(MTYPE_WORK_QUEUE, mq); | |
0ef6eacc IR |
3812 | } |
3813 | ||
4d38fdb4 | 3814 | /* initialise zebra rib work queue */ |
2561d12e | 3815 | static void rib_queue_init(void) |
4d38fdb4 | 3816 | { |
489a9614 DS |
3817 | if (!(zrouter.ribq = work_queue_new(zrouter.master, |
3818 | "route_node processing"))) { | |
e914ccbe | 3819 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3820 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 3821 | return; |
3822 | } | |
4d38fdb4 | 3823 | |
d62a17ae | 3824 | /* fill in the work queue spec */ |
489a9614 | 3825 | zrouter.ribq->spec.workfunc = &meta_queue_process; |
46a4e345 | 3826 | zrouter.ribq->spec.completion_func = NULL; |
d62a17ae | 3827 | /* XXX: TODO: These should be runtime configurable via vty */ |
489a9614 DS |
3828 | zrouter.ribq->spec.max_retries = 3; |
3829 | zrouter.ribq->spec.hold = ZEBRA_RIB_PROCESS_HOLD_TIME; | |
3830 | zrouter.ribq->spec.retry = ZEBRA_RIB_PROCESS_RETRY_TIME; | |
d62a17ae | 3831 | |
ea45a4e7 | 3832 | if (!(zrouter.mq = meta_queue_new())) { |
e914ccbe | 3833 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 3834 | "%s: could not initialise meta queue!", __func__); |
d62a17ae | 3835 | return; |
3836 | } | |
3837 | return; | |
718e3744 | 3838 | } |
3839 | ||
434434f7 DS |
3840 | rib_dest_t *zebra_rib_create_dest(struct route_node *rn) |
3841 | { | |
3842 | rib_dest_t *dest; | |
3843 | ||
3844 | dest = XCALLOC(MTYPE_RIB_DEST, sizeof(rib_dest_t)); | |
aa57abfb | 3845 | rnh_list_init(&dest->nht); |
daaeaa21 | 3846 | re_list_init(&dest->routes); |
434434f7 DS |
3847 | route_lock_node(rn); /* rn route table reference */ |
3848 | rn->info = dest; | |
3849 | dest->rnode = rn; | |
3850 | ||
3851 | return dest; | |
3852 | } | |
3853 | ||
6d691129 PJ |
3854 | /* RIB updates are processed via a queue of pointers to route_nodes. |
3855 | * | |
3856 | * The queue length is bounded by the maximal size of the routing table, | |
3857 | * as a route_node will not be requeued, if already queued. | |
3858 | * | |
f0f77c9a DS |
3859 | * REs are submitted via rib_addnode or rib_delnode which set minimal |
3860 | * state, or static_install_route (when an existing RE is updated) | |
3c0755dc | 3861 | * and then submit route_node to queue for best-path selection later. |
f0f77c9a | 3862 | * Order of add/delete state changes are preserved for any given RE. |
6d691129 | 3863 | * |
f0f77c9a | 3864 | * Deleted REs are reaped during best-path selection. |
6d691129 PJ |
3865 | * |
3866 | * rib_addnode | |
f0f77c9a DS |
3867 | * |-> rib_link or unset ROUTE_ENTRY_REMOVE |->Update kernel with |
3868 | * |-------->| | best RE, if required | |
3c0755dc PJ |
3869 | * | | |
3870 | * static_install->|->rib_addqueue...... -> rib_process | |
3871 | * | | | |
3872 | * |-------->| |-> rib_unlink | |
f0f77c9a DS |
3873 | * |-> set ROUTE_ENTRY_REMOVE | |
3874 | * rib_delnode (RE freed) | |
6d691129 | 3875 | * |
9fd92e3c AS |
3876 | * The 'info' pointer of a route_node points to a rib_dest_t |
3877 | * ('dest'). Queueing state for a route_node is kept on the dest. The | |
3878 | * dest is created on-demand by rib_link() and is kept around at least | |
3879 | * as long as there are ribs hanging off it (@see rib_gc_dest()). | |
d62a17ae | 3880 | * |
32367e7a | 3881 | * Refcounting (aka "locking" throughout the Zebra and FRR code): |
6d691129 PJ |
3882 | * |
3883 | * - route_nodes: refcounted by: | |
9fd92e3c AS |
3884 | * - dest attached to route_node: |
3885 | * - managed by: rib_link/rib_gc_dest | |
6d691129 PJ |
3886 | * - route_node processing queue |
3887 | * - managed by: rib_addqueue, rib_process. | |
3888 | * | |
3889 | */ | |
d62a17ae | 3890 | |
f0f77c9a | 3891 | /* Add RE to head of the route node. */ |
d62a17ae | 3892 | static void rib_link(struct route_node *rn, struct route_entry *re, int process) |
3893 | { | |
d62a17ae | 3894 | rib_dest_t *dest; |
3895 | afi_t afi; | |
3896 | const char *rmap_name; | |
9fd92e3c | 3897 | |
d62a17ae | 3898 | assert(re && rn); |
9fd92e3c | 3899 | |
d62a17ae | 3900 | dest = rib_dest_from_rnode(rn); |
3901 | if (!dest) { | |
3902 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3903 | rnode_debug(rn, re->vrf_id, "rn %p adding dest", rn); | |
7a4bb9c5 | 3904 | |
434434f7 | 3905 | dest = zebra_rib_create_dest(rn); |
d62a17ae | 3906 | } |
2263a412 | 3907 | |
045207e2 | 3908 | re_list_add_head(&dest->routes, re); |
d62a17ae | 3909 | |
3910 | afi = (rn->p.family == AF_INET) | |
3911 | ? AFI_IP | |
3912 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3913 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3914 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3915 | ||
d62a17ae | 3916 | rmap_name = zebra_get_import_table_route_map(afi, re->table); |
fe257ae7 | 3917 | zebra_add_import_table_entry(zvrf, rn, re, rmap_name); |
207207c0 S |
3918 | } |
3919 | ||
3920 | if (process) | |
d62a17ae | 3921 | rib_queue_add(rn); |
3922 | } | |
3923 | ||
7e24fdf3 DS |
3924 | static void rib_addnode(struct route_node *rn, |
3925 | struct route_entry *re, int process) | |
d62a17ae | 3926 | { |
3927 | /* RE node has been un-removed before route-node is processed. | |
3928 | * route_node must hence already be on the queue for processing.. | |
3929 | */ | |
3930 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) { | |
3931 | if (IS_ZEBRA_DEBUG_RIB) | |
3932 | rnode_debug(rn, re->vrf_id, "rn %p, un-removed re %p", | |
3933 | (void *)rn, (void *)re); | |
3934 | ||
3935 | UNSET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3936 | return; | |
3937 | } | |
3938 | rib_link(rn, re, process); | |
6d691129 PJ |
3939 | } |
3940 | ||
9fd92e3c AS |
3941 | /* |
3942 | * rib_unlink | |
3943 | * | |
3944 | * Detach a rib structure from a route_node. | |
3945 | * | |
3946 | * Note that a call to rib_unlink() should be followed by a call to | |
3947 | * rib_gc_dest() at some point. This allows a rib_dest_t that is no | |
3948 | * longer required to be deleted. | |
3949 | */ | |
d62a17ae | 3950 | void rib_unlink(struct route_node *rn, struct route_entry *re) |
6d691129 | 3951 | { |
d62a17ae | 3952 | rib_dest_t *dest; |
9fd92e3c | 3953 | |
d62a17ae | 3954 | assert(rn && re); |
6d691129 | 3955 | |
d62a17ae | 3956 | if (IS_ZEBRA_DEBUG_RIB) |
3957 | rnode_debug(rn, re->vrf_id, "rn %p, re %p", (void *)rn, | |
3958 | (void *)re); | |
6d691129 | 3959 | |
d62a17ae | 3960 | dest = rib_dest_from_rnode(rn); |
6d691129 | 3961 | |
045207e2 | 3962 | re_list_del(&dest->routes, re); |
7a4bb9c5 | 3963 | |
2eb07de3 DS |
3964 | if (dest->selected_fib == re) |
3965 | dest->selected_fib = NULL; | |
3966 | ||
ce649b9d | 3967 | rib_re_nhg_free(re); |
ee5e8a48 | 3968 | |
b86c1f4f | 3969 | zapi_re_opaque_free(re->opaque); |
a29a6001 | 3970 | |
d62a17ae | 3971 | XFREE(MTYPE_RE, re); |
3972 | } | |
3973 | ||
3974 | void rib_delnode(struct route_node *rn, struct route_entry *re) | |
3975 | { | |
3976 | afi_t afi; | |
3977 | ||
3978 | if (IS_ZEBRA_DEBUG_RIB) | |
3979 | rnode_debug(rn, re->vrf_id, "rn %p, re %p, removing", | |
3980 | (void *)rn, (void *)re); | |
3981 | SET_FLAG(re->status, ROUTE_ENTRY_REMOVED); | |
3982 | ||
3983 | afi = (rn->p.family == AF_INET) | |
3984 | ? AFI_IP | |
3985 | : (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
fe257ae7 DS |
3986 | if (is_zebra_import_table_enabled(afi, re->vrf_id, re->table)) { |
3987 | struct zebra_vrf *zvrf = zebra_vrf_lookup_by_id(re->vrf_id); | |
3988 | ||
3989 | zebra_del_import_table_entry(zvrf, rn, re); | |
d62a17ae | 3990 | /* Just clean up if non main table */ |
e658173a DS |
3991 | if (IS_ZEBRA_DEBUG_RIB) |
3992 | zlog_debug("%s(%u):%pRN: Freeing route rn %p, re %p (%s)", | |
3993 | vrf_id_to_name(re->vrf_id), re->vrf_id, rn, | |
bd47f3a3 | 3994 | rn, re, zebra_route_string(re->type)); |
d62a17ae | 3995 | } |
207207c0 S |
3996 | |
3997 | rib_queue_add(rn); | |
718e3744 | 3998 | } |
3999 | ||
6d81b590 MS |
4000 | /* |
4001 | * Helper that debugs a single nexthop within a route-entry | |
4002 | */ | |
4003 | static void _route_entry_dump_nh(const struct route_entry *re, | |
4004 | const char *straddr, | |
4005 | const struct nexthop *nexthop) | |
4006 | { | |
4007 | char nhname[PREFIX_STRLEN]; | |
4008 | char backup_str[50]; | |
4009 | char wgt_str[50]; | |
474aebd9 | 4010 | char temp_str[10]; |
cbe5bafb | 4011 | char label_str[MPLS_LABEL_STRLEN]; |
474aebd9 | 4012 | int i; |
6d81b590 MS |
4013 | struct interface *ifp; |
4014 | struct vrf *vrf = vrf_lookup_by_id(nexthop->vrf_id); | |
4015 | ||
4016 | switch (nexthop->type) { | |
4017 | case NEXTHOP_TYPE_BLACKHOLE: | |
772270f3 | 4018 | snprintf(nhname, sizeof(nhname), "Blackhole"); |
6d81b590 MS |
4019 | break; |
4020 | case NEXTHOP_TYPE_IFINDEX: | |
4021 | ifp = if_lookup_by_index(nexthop->ifindex, nexthop->vrf_id); | |
772270f3 QY |
4022 | snprintf(nhname, sizeof(nhname), "%s", |
4023 | ifp ? ifp->name : "Unknown"); | |
6d81b590 MS |
4024 | break; |
4025 | case NEXTHOP_TYPE_IPV4: | |
4026 | /* fallthrough */ | |
4027 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
4028 | inet_ntop(AF_INET, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
4029 | break; | |
4030 | case NEXTHOP_TYPE_IPV6: | |
4031 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
4032 | inet_ntop(AF_INET6, &nexthop->gate, nhname, INET6_ADDRSTRLEN); | |
4033 | break; | |
4034 | } | |
4035 | ||
cbe5bafb MS |
4036 | /* Label stack */ |
4037 | label_str[0] = '\0'; | |
4038 | if (nexthop->nh_label && nexthop->nh_label->num_labels > 0) { | |
4039 | mpls_label2str(nexthop->nh_label->num_labels, | |
4040 | nexthop->nh_label->label, label_str, | |
4645cb6b SW |
4041 | sizeof(label_str), nexthop->nh_label_type, |
4042 | 0 /*pretty*/); | |
cbe5bafb MS |
4043 | strlcat(label_str, ", ", sizeof(label_str)); |
4044 | } | |
4045 | ||
6d81b590 MS |
4046 | backup_str[0] = '\0'; |
4047 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
4048 | snprintf(backup_str, sizeof(backup_str), "backup "); |
4049 | for (i = 0; i < nexthop->backup_num; i++) { | |
4050 | snprintf(temp_str, sizeof(temp_str), "%d, ", | |
4051 | nexthop->backup_idx[i]); | |
4052 | strlcat(backup_str, temp_str, sizeof(backup_str)); | |
4053 | } | |
6d81b590 MS |
4054 | } |
4055 | ||
4056 | wgt_str[0] = '\0'; | |
4057 | if (nexthop->weight) | |
4058 | snprintf(wgt_str, sizeof(wgt_str), "wgt %d,", nexthop->weight); | |
4059 | ||
5609e70f | 4060 | zlog_debug("%s: %s %s[%u] %svrf %s(%u) %s%s with flags %s%s%s%s%s%s%s%s%s", |
6d81b590 | 4061 | straddr, (nexthop->rparent ? " NH" : "NH"), nhname, |
cbe5bafb | 4062 | nexthop->ifindex, label_str, vrf ? vrf->name : "Unknown", |
6d81b590 MS |
4063 | nexthop->vrf_id, |
4064 | wgt_str, backup_str, | |
4065 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
4066 | ? "ACTIVE " | |
4067 | : ""), | |
4068 | (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED) | |
4069 | ? "FIB " | |
4070 | : ""), | |
4071 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE) | |
4072 | ? "RECURSIVE " | |
4073 | : ""), | |
4074 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK) | |
4075 | ? "ONLINK " | |
4076 | : ""), | |
4077 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_DUPLICATE) | |
4078 | ? "DUPLICATE " | |
aab4eca1 DS |
4079 | : ""), |
4080 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RNH_FILTERED) | |
4081 | ? "FILTERED " : ""), | |
4082 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP) | |
4083 | ? "BACKUP " : ""), | |
4084 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE) | |
5609e70f XL |
4085 | ? "SRTE " : ""), |
4086 | (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_EVPN) | |
4087 | ? "EVPN " : "")); | |
6d81b590 MS |
4088 | |
4089 | } | |
4090 | ||
f0f77c9a | 4091 | /* This function dumps the contents of a given RE entry into |
dc95824a DO |
4092 | * standard debug log. Calling function name and IP prefix in |
4093 | * question are passed as 1st and 2nd arguments. | |
4094 | */ | |
d62a17ae | 4095 | void _route_entry_dump(const char *func, union prefixconstptr pp, |
4096 | union prefixconstptr src_pp, | |
4097 | const struct route_entry *re) | |
4098 | { | |
d62a17ae | 4099 | const struct prefix *src_p = src_pp.p; |
4100 | bool is_srcdst = src_p && src_p->prefixlen; | |
4101 | char straddr[PREFIX_STRLEN]; | |
4102 | char srcaddr[PREFIX_STRLEN]; | |
61e6de9d DS |
4103 | char flags_buf[128]; |
4104 | char status_buf[128]; | |
d62a17ae | 4105 | struct nexthop *nexthop; |
c479e756 | 4106 | struct vrf *vrf = vrf_lookup_by_id(re->vrf_id); |
6d81b590 | 4107 | struct nexthop_group *nhg; |
d62a17ae | 4108 | |
5d27875b DL |
4109 | prefix2str(pp, straddr, sizeof(straddr)); |
4110 | ||
c479e756 | 4111 | zlog_debug("%s: dumping RE entry %p for %s%s%s vrf %s(%u)", func, |
5d27875b | 4112 | (const void *)re, straddr, |
d62a17ae | 4113 | is_srcdst ? " from " : "", |
4114 | is_srcdst ? prefix2str(src_pp, srcaddr, sizeof(srcaddr)) | |
4115 | : "", | |
c479e756 | 4116 | VRF_LOGNAME(vrf), re->vrf_id); |
cc54cfee | 4117 | zlog_debug("%s: uptime == %lu, type == %u, instance == %d, table == %d", |
53c16fbe | 4118 | straddr, (unsigned long)re->uptime, re->type, re->instance, |
cc54cfee | 4119 | re->table); |
61e6de9d DS |
4120 | zlog_debug( |
4121 | "%s: metric == %u, mtu == %u, distance == %u, flags == %sstatus == %s", | |
4122 | straddr, re->metric, re->mtu, re->distance, | |
4123 | zclient_dump_route_flags(re->flags, flags_buf, | |
4124 | sizeof(flags_buf)), | |
4125 | _dump_re_status(re, status_buf, sizeof(status_buf))); | |
53c16fbe | 4126 | zlog_debug("%s: nexthop_num == %u, nexthop_active_num == %u", straddr, |
c415d895 MS |
4127 | nexthop_group_nexthop_num(&(re->nhe->nhg)), |
4128 | nexthop_group_active_nexthop_num(&(re->nhe->nhg))); | |
d62a17ae | 4129 | |
6d81b590 MS |
4130 | /* Dump nexthops */ |
4131 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) | |
4132 | _route_entry_dump_nh(re, straddr, nexthop); | |
2d68a0f2 | 4133 | |
d7ac4c4d DS |
4134 | if (zebra_nhg_get_backup_nhg(re->nhe)) { |
4135 | zlog_debug("%s: backup nexthops:", straddr); | |
c6eee91f | 4136 | |
d7ac4c4d DS |
4137 | nhg = zebra_nhg_get_backup_nhg(re->nhe); |
4138 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) | |
4139 | _route_entry_dump_nh(re, straddr, nexthop); | |
c6eee91f DS |
4140 | } |
4141 | ||
d7ac4c4d DS |
4142 | zlog_debug("%s: dump complete", straddr); |
4143 | } | |
cf363e1b | 4144 | |
81322b96 DS |
4145 | static int rib_meta_queue_gr_run_add(struct meta_queue *mq, void *data) |
4146 | { | |
4147 | listnode_add(mq->subq[META_QUEUE_GR_RUN], data); | |
4148 | mq->size++; | |
4149 | ||
4150 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
4151 | zlog_debug("Graceful Run adding"); | |
4152 | ||
4153 | return 0; | |
4154 | } | |
4155 | ||
d7ac4c4d DS |
4156 | static int rib_meta_queue_early_route_add(struct meta_queue *mq, void *data) |
4157 | { | |
4158 | struct zebra_early_route *ere = data; | |
718e3744 | 4159 | |
d7ac4c4d DS |
4160 | listnode_add(mq->subq[META_QUEUE_EARLY_ROUTE], data); |
4161 | mq->size++; | |
6883bf8d | 4162 | |
d7ac4c4d DS |
4163 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
4164 | zlog_debug( | |
4165 | "Route %pFX(%u) queued for processing into sub-queue %s", | |
4166 | &ere->p, ere->re->vrf_id, | |
4167 | subqueue2str(META_QUEUE_EARLY_ROUTE)); | |
6b0655a2 | 4168 | |
d7ac4c4d DS |
4169 | return 0; |
4170 | } | |
718e3744 | 4171 | |
81322b96 DS |
4172 | int rib_add_gr_run(afi_t afi, vrf_id_t vrf_id, uint8_t proto, uint8_t instance) |
4173 | { | |
4174 | struct meta_q_gr_run *gr_run; | |
4175 | ||
4176 | gr_run = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(*gr_run)); | |
4177 | ||
4178 | gr_run->afi = afi; | |
4179 | gr_run->proto = proto; | |
4180 | gr_run->vrf_id = vrf_id; | |
4181 | gr_run->instance = instance; | |
4182 | ||
4183 | return mq_add_handler(gr_run, rib_meta_queue_gr_run_add); | |
4184 | } | |
4185 | ||
b0385873 DS |
4186 | struct route_entry *zebra_rib_route_entry_new(vrf_id_t vrf_id, int type, |
4187 | uint8_t instance, uint32_t flags, | |
4188 | uint32_t nhe_id, | |
4189 | uint32_t table_id, | |
4190 | uint32_t metric, uint32_t mtu, | |
4191 | uint8_t distance, route_tag_t tag) | |
4192 | { | |
4193 | struct route_entry *re; | |
4194 | ||
4195 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); | |
4196 | re->type = type; | |
4197 | re->instance = instance; | |
4198 | re->distance = distance; | |
4199 | re->flags = flags; | |
4200 | re->metric = metric; | |
4201 | re->mtu = mtu; | |
4202 | re->table = table_id; | |
4203 | re->vrf_id = vrf_id; | |
4204 | re->uptime = monotime(NULL); | |
4205 | re->tag = tag; | |
4206 | re->nhe_id = nhe_id; | |
4207 | ||
4208 | return re; | |
4209 | } | |
d7ac4c4d DS |
4210 | /* |
4211 | * Internal route-add implementation; there are a couple of different public | |
4212 | * signatures. Callers in this path are responsible for the memory they | |
4213 | * allocate: if they allocate a nexthop_group or backup nexthop info, they | |
4214 | * must free those objects. If this returns < 0, an error has occurred and the | |
4215 | * route_entry 're' has not been captured; the caller should free that also. | |
4216 | * | |
4217 | * -1 -> error | |
4218 | * 0 -> Add | |
4219 | * 1 -> update | |
4220 | */ | |
4221 | int rib_add_multipath_nhe(afi_t afi, safi_t safi, struct prefix *p, | |
4222 | struct prefix_ipv6 *src_p, struct route_entry *re, | |
4223 | struct nhg_hash_entry *re_nhe, bool startup) | |
4224 | { | |
4225 | struct zebra_early_route *ere; | |
0ca6f3b1 | 4226 | |
d7ac4c4d DS |
4227 | if (!re) |
4228 | return -1; | |
0ca6f3b1 | 4229 | |
d7ac4c4d | 4230 | assert(!src_p || !src_p->prefixlen || afi == AFI_IP6); |
0ca6f3b1 | 4231 | |
d7ac4c4d DS |
4232 | ere = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(*ere)); |
4233 | ere->afi = afi; | |
4234 | ere->safi = safi; | |
4235 | ere->p = *p; | |
4236 | if (src_p) | |
4237 | ere->src_p = *src_p; | |
4238 | ere->src_p_provided = !!src_p; | |
4239 | ere->re = re; | |
4240 | ere->re_nhe = re_nhe; | |
4241 | ere->startup = startup; | |
4242 | ||
4243 | return mq_add_handler(ere, rib_meta_queue_early_route_add); | |
d62a17ae | 4244 | } |
4245 | ||
1d48702e MS |
4246 | /* |
4247 | * Add a single route. | |
4248 | */ | |
4249 | int rib_add_multipath(afi_t afi, safi_t safi, struct prefix *p, | |
4250 | struct prefix_ipv6 *src_p, struct route_entry *re, | |
c6eee91f | 4251 | struct nexthop_group *ng, bool startup) |
1d48702e MS |
4252 | { |
4253 | int ret; | |
d7ac4c4d | 4254 | struct nhg_hash_entry nhe, *n; |
1d48702e MS |
4255 | |
4256 | if (!re) | |
4257 | return -1; | |
4258 | ||
4259 | /* We either need nexthop(s) or an existing nexthop id */ | |
4260 | if (ng == NULL && re->nhe_id == 0) | |
4261 | return -1; | |
4262 | ||
4263 | /* | |
4264 | * Use a temporary nhe to convey info to the common/main api. | |
4265 | */ | |
377e29f7 | 4266 | zebra_nhe_init(&nhe, afi, (ng ? ng->nexthop : NULL)); |
1d48702e MS |
4267 | if (ng) |
4268 | nhe.nhg.nexthop = ng->nexthop; | |
4269 | else if (re->nhe_id > 0) | |
4270 | nhe.id = re->nhe_id; | |
4271 | ||
d7ac4c4d DS |
4272 | n = zebra_nhe_copy(&nhe, 0); |
4273 | ret = rib_add_multipath_nhe(afi, safi, p, src_p, re, n, startup); | |
1d48702e MS |
4274 | |
4275 | /* In error cases, free the route also */ | |
4276 | if (ret < 0) | |
4277 | XFREE(MTYPE_RE, re); | |
4278 | ||
4279 | return ret; | |
4280 | } | |
4281 | ||
d62a17ae | 4282 | void rib_delete(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 4283 | unsigned short instance, uint32_t flags, struct prefix *p, |
fd36be7e | 4284 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
bc541126 | 4285 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, |
3ceae22b | 4286 | uint8_t distance, bool fromkernel) |
d62a17ae | 4287 | { |
d7ac4c4d DS |
4288 | struct zebra_early_route *ere; |
4289 | struct route_entry *re = NULL; | |
4290 | struct nhg_hash_entry *nhe = NULL; | |
cf363e1b | 4291 | |
b0385873 DS |
4292 | re = zebra_rib_route_entry_new(vrf_id, type, instance, flags, nhe_id, |
4293 | table_id, metric, 0, distance, 0); | |
cf363e1b | 4294 | |
d7ac4c4d DS |
4295 | if (nh) { |
4296 | nhe = zebra_nhg_alloc(); | |
4297 | nhe->nhg.nexthop = nexthop_dup(nh, NULL); | |
5dfeba19 | 4298 | } |
05737783 | 4299 | |
d7ac4c4d DS |
4300 | ere = XCALLOC(MTYPE_WQ_WRAPPER, sizeof(*ere)); |
4301 | ere->afi = afi; | |
4302 | ere->safi = safi; | |
4303 | ere->p = *p; | |
4304 | if (src_p) | |
4305 | ere->src_p = *src_p; | |
4306 | ere->src_p_provided = !!src_p; | |
4307 | ere->re = re; | |
4308 | ere->re_nhe = nhe; | |
4309 | ere->startup = false; | |
4310 | ere->deletion = true; | |
4311 | ere->fromkernel = fromkernel; | |
4312 | ||
4313 | mq_add_handler(ere, rib_meta_queue_early_route_add); | |
d62a17ae | 4314 | } |
718e3744 | 4315 | |
718e3744 | 4316 | |
d7c0a89a | 4317 | int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, |
acde7f6b | 4318 | unsigned short instance, uint32_t flags, struct prefix *p, |
d7c0a89a | 4319 | struct prefix_ipv6 *src_p, const struct nexthop *nh, |
8032b717 | 4320 | uint32_t nhe_id, uint32_t table_id, uint32_t metric, uint32_t mtu, |
c6eee91f | 4321 | uint8_t distance, route_tag_t tag, bool startup) |
d62a17ae | 4322 | { |
bbb322f2 | 4323 | struct route_entry *re = NULL; |
d7ac4c4d DS |
4324 | struct nexthop nexthop = {}; |
4325 | struct nexthop_group ng = {}; | |
718e3744 | 4326 | |
66af6845 | 4327 | /* Allocate new route_entry structure. */ |
b0385873 DS |
4328 | re = zebra_rib_route_entry_new(vrf_id, type, instance, flags, nhe_id, |
4329 | table_id, metric, mtu, distance, tag); | |
bbb322f2 | 4330 | |
0eb97b86 MS |
4331 | /* If the owner of the route supplies a shared nexthop-group id, |
4332 | * we'll use that. Otherwise, pass the nexthop along directly. | |
4333 | */ | |
e22e8001 | 4334 | if (!nhe_id) { |
e22e8001 | 4335 | /* Add nexthop. */ |
d7ac4c4d DS |
4336 | nexthop = *nh; |
4337 | nexthop_group_add_sorted(&ng, &nexthop); | |
e22e8001 | 4338 | } |
718e3744 | 4339 | |
d7ac4c4d | 4340 | return rib_add_multipath(afi, safi, p, src_p, re, &ng, startup); |
718e3744 | 4341 | } |
4342 | ||
91e6f25b | 4343 | static const char *rib_update_event2str(enum rib_update_event event) |
2a99ab95 SW |
4344 | { |
4345 | const char *ret = "UNKNOWN"; | |
4346 | ||
4347 | switch (event) { | |
4348 | case RIB_UPDATE_KERNEL: | |
4349 | ret = "RIB_UPDATE_KERNEL"; | |
4350 | break; | |
4351 | case RIB_UPDATE_RMAP_CHANGE: | |
4352 | ret = "RIB_UPDATE_RMAP_CHANGE"; | |
4353 | break; | |
4354 | case RIB_UPDATE_OTHER: | |
4355 | ret = "RIB_UPDATE_OTHER"; | |
4356 | break; | |
4357 | case RIB_UPDATE_MAX: | |
4358 | break; | |
4359 | } | |
4360 | ||
4361 | return ret; | |
4362 | } | |
4363 | ||
4364 | ||
4365 | /* Schedule route nodes to be processed if they match the type */ | |
4366 | static void rib_update_route_node(struct route_node *rn, int type) | |
4367 | { | |
4368 | struct route_entry *re, *next; | |
4369 | bool re_changed = false; | |
4370 | ||
4371 | RNODE_FOREACH_RE_SAFE (rn, re, next) { | |
4372 | if (type == ZEBRA_ROUTE_ALL || type == re->type) { | |
4373 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
4374 | re_changed = true; | |
4375 | } | |
4376 | } | |
4377 | ||
4378 | if (re_changed) | |
4379 | rib_queue_add(rn); | |
4380 | } | |
4381 | ||
1c848137 | 4382 | /* Schedule routes of a particular table (address-family) based on event. */ |
54aeba35 DS |
4383 | void rib_update_table(struct route_table *table, enum rib_update_event event, |
4384 | int rtype) | |
d62a17ae | 4385 | { |
4386 | struct route_node *rn; | |
2a99ab95 SW |
4387 | |
4388 | if (IS_ZEBRA_DEBUG_EVENT) { | |
4389 | struct zebra_vrf *zvrf; | |
4390 | struct vrf *vrf; | |
4391 | ||
630d5962 DS |
4392 | zvrf = table->info |
4393 | ? ((struct rib_table_info *)table->info)->zvrf | |
4394 | : NULL; | |
2a99ab95 SW |
4395 | vrf = zvrf ? zvrf->vrf : NULL; |
4396 | ||
54aeba35 | 4397 | zlog_debug("%s: %s VRF %s Table %u event %s Route type: %s", __func__, |
2a99ab95 | 4398 | table->info ? afi2str( |
630d5962 | 4399 | ((struct rib_table_info *)table->info)->afi) |
2a99ab95 | 4400 | : "Unknown", |
bd47f3a3 | 4401 | VRF_LOGNAME(vrf), zvrf ? zvrf->table_id : 0, |
54aeba35 | 4402 | rib_update_event2str(event), zebra_route_string(rtype)); |
2a99ab95 | 4403 | } |
d62a17ae | 4404 | |
4405 | /* Walk all routes and queue for processing, if appropriate for | |
4406 | * the trigger event. | |
4407 | */ | |
4408 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { | |
1ca60f2c DS |
4409 | /* |
4410 | * If we are looking at a route node and the node | |
4411 | * has already been queued we don't | |
4412 | * need to queue it up again | |
4413 | */ | |
2a99ab95 SW |
4414 | if (rn->info |
4415 | && CHECK_FLAG(rib_dest_from_rnode(rn)->flags, | |
4416 | RIB_ROUTE_ANY_QUEUED)) | |
1ca60f2c | 4417 | continue; |
2a99ab95 | 4418 | |
d62a17ae | 4419 | switch (event) { |
2a99ab95 SW |
4420 | case RIB_UPDATE_KERNEL: |
4421 | rib_update_route_node(rn, ZEBRA_ROUTE_KERNEL); | |
4422 | break; | |
d62a17ae | 4423 | case RIB_UPDATE_RMAP_CHANGE: |
4424 | case RIB_UPDATE_OTHER: | |
54aeba35 | 4425 | rib_update_route_node(rn, rtype); |
d62a17ae | 4426 | break; |
a98701f0 | 4427 | case RIB_UPDATE_MAX: |
d62a17ae | 4428 | break; |
4429 | } | |
4430 | } | |
b84c7253 | 4431 | } |
4432 | ||
54aeba35 | 4433 | static void rib_update_handle_vrf_all(enum rib_update_event event, int rtype) |
2a99ab95 SW |
4434 | { |
4435 | struct zebra_router_table *zrt; | |
4436 | ||
4437 | if (IS_ZEBRA_DEBUG_EVENT) | |
4438 | zlog_debug("%s: Handling VRF (ALL) event %s", __func__, | |
4439 | rib_update_event2str(event)); | |
4440 | ||
4441 | /* Just iterate over all the route tables, rather than vrf lookups */ | |
4442 | RB_FOREACH (zrt, zebra_router_table_head, &zrouter.tables) | |
54aeba35 | 4443 | rib_update_table(zrt->table, event, rtype); |
2a99ab95 SW |
4444 | } |
4445 | ||
4446 | struct rib_update_ctx { | |
91e6f25b | 4447 | enum rib_update_event event; |
2a99ab95 SW |
4448 | vrf_id_t vrf_id; |
4449 | }; | |
4450 | ||
4451 | static struct rib_update_ctx *rib_update_ctx_init(vrf_id_t vrf_id, | |
91e6f25b | 4452 | enum rib_update_event event) |
2a99ab95 SW |
4453 | { |
4454 | struct rib_update_ctx *ctx; | |
4455 | ||
4456 | ctx = XCALLOC(MTYPE_RIB_UPDATE_CTX, sizeof(struct rib_update_ctx)); | |
4457 | ||
4458 | ctx->event = event; | |
4459 | ctx->vrf_id = vrf_id; | |
4460 | ||
4461 | return ctx; | |
4462 | } | |
4463 | ||
4464 | static void rib_update_ctx_fini(struct rib_update_ctx **ctx) | |
4465 | { | |
4466 | XFREE(MTYPE_RIB_UPDATE_CTX, *ctx); | |
2a99ab95 SW |
4467 | } |
4468 | ||
e6685141 | 4469 | static void rib_update_handler(struct event *thread) |
2a99ab95 SW |
4470 | { |
4471 | struct rib_update_ctx *ctx; | |
4472 | ||
e16d030c | 4473 | ctx = EVENT_ARG(thread); |
2a99ab95 | 4474 | |
d2a17423 | 4475 | rib_update_handle_vrf_all(ctx->event, ZEBRA_ROUTE_ALL); |
2a99ab95 SW |
4476 | |
4477 | rib_update_ctx_fini(&ctx); | |
2a99ab95 SW |
4478 | } |
4479 | ||
4480 | /* | |
4481 | * Thread list to ensure we don't schedule a ton of events | |
4482 | * if interfaces are flapping for instance. | |
4483 | */ | |
e6685141 | 4484 | static struct event *t_rib_update_threads[RIB_UPDATE_MAX]; |
2a99ab95 | 4485 | |
3cd0accb DS |
4486 | void rib_update_finish(void) |
4487 | { | |
4488 | int i; | |
4489 | ||
4490 | for (i = RIB_UPDATE_KERNEL; i < RIB_UPDATE_MAX; i++) { | |
4491 | if (event_is_scheduled(t_rib_update_threads[i])) { | |
4492 | struct rib_update_ctx *ctx; | |
4493 | ||
4494 | ctx = EVENT_ARG(t_rib_update_threads[i]); | |
4495 | ||
4496 | rib_update_ctx_fini(&ctx); | |
4497 | EVENT_OFF(t_rib_update_threads[i]); | |
4498 | } | |
4499 | } | |
4500 | } | |
4501 | ||
2a99ab95 | 4502 | /* Schedule a RIB update event for all vrfs */ |
91e6f25b | 4503 | void rib_update(enum rib_update_event event) |
2a99ab95 SW |
4504 | { |
4505 | struct rib_update_ctx *ctx; | |
4506 | ||
5f6eaa9b | 4507 | if (event_is_scheduled(t_rib_update_threads[event])) |
e13f12a7 | 4508 | return; |
2a99ab95 | 4509 | |
3cd0accb DS |
4510 | if (zebra_router_in_shutdown()) |
4511 | return; | |
4512 | ||
e13f12a7 | 4513 | ctx = rib_update_ctx_init(0, event); |
2a99ab95 | 4514 | |
907a2395 DS |
4515 | event_add_event(zrouter.master, rib_update_handler, ctx, 0, |
4516 | &t_rib_update_threads[event]); | |
e13f12a7 DS |
4517 | |
4518 | if (IS_ZEBRA_DEBUG_EVENT) | |
05267678 | 4519 | zlog_debug("%s: Scheduled VRF (ALL), event %s", __func__, |
2a99ab95 | 4520 | rib_update_event2str(event)); |
718e3744 | 4521 | } |
4522 | ||
718e3744 | 4523 | /* Delete self installed routes after zebra is relaunched. */ |
95a29032 | 4524 | void rib_sweep_table(struct route_table *table) |
d62a17ae | 4525 | { |
4526 | struct route_node *rn; | |
4527 | struct route_entry *re; | |
4528 | struct route_entry *next; | |
915902cb | 4529 | struct nexthop *nexthop; |
d62a17ae | 4530 | |
915902cb DS |
4531 | if (!table) |
4532 | return; | |
d62a17ae | 4533 | |
6d81b590 MS |
4534 | if (IS_ZEBRA_DEBUG_RIB) |
4535 | zlog_debug("%s: starting", __func__); | |
4536 | ||
915902cb | 4537 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
a2addae8 | 4538 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d4644d41 | 4539 | |
915902cb DS |
4540 | if (IS_ZEBRA_DEBUG_RIB) |
4541 | route_entry_dump(&rn->p, NULL, re); | |
4542 | ||
4543 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
4544 | continue; | |
4545 | ||
4546 | if (!CHECK_FLAG(re->flags, ZEBRA_FLAG_SELFROUTE)) | |
4547 | continue; | |
4548 | ||
d4644d41 DS |
4549 | /* |
4550 | * If routes are older than startup_time then | |
4551 | * we know we read them in from the kernel. | |
4552 | * As such we can safely remove them. | |
4553 | */ | |
4554 | if (zrouter.startup_time < re->uptime) | |
4555 | continue; | |
4556 | ||
915902cb DS |
4557 | /* |
4558 | * So we are starting up and have received | |
4559 | * routes from the kernel that we have installed | |
4560 | * from a previous run of zebra but not cleaned | |
4561 | * up ( say a kill -9 ) | |
4562 | * But since we haven't actually installed | |
4563 | * them yet( we received them from the kernel ) | |
4564 | * we don't think they are active. | |
4565 | * So let's pretend they are active to actually | |
4566 | * remove them. | |
4567 | * In all honesty I'm not sure if we should | |
4568 | * mark them as active when we receive them | |
4569 | * This is startup only so probably ok. | |
4570 | * | |
4571 | * If we ever decide to move rib_sweep_table | |
4572 | * to a different spot (ie startup ) | |
4573 | * this decision needs to be revisited | |
4574 | */ | |
677c1dd5 | 4575 | SET_FLAG(re->status, ROUTE_ENTRY_INSTALLED); |
c415d895 | 4576 | for (ALL_NEXTHOPS(re->nhe->nhg, nexthop)) |
915902cb DS |
4577 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
4578 | ||
0c555cc6 DS |
4579 | rib_uninstall_kernel(rn, re); |
4580 | rib_delnode(rn, re); | |
915902cb DS |
4581 | } |
4582 | } | |
6d81b590 MS |
4583 | |
4584 | if (IS_ZEBRA_DEBUG_RIB) | |
4585 | zlog_debug("%s: ends", __func__); | |
718e3744 | 4586 | } |
4587 | ||
4588 | /* Sweep all RIB tables. */ | |
e6685141 | 4589 | void rib_sweep_route(struct event *t) |
718e3744 | 4590 | { |
d62a17ae | 4591 | struct vrf *vrf; |
4592 | struct zebra_vrf *zvrf; | |
78104b9b | 4593 | |
a2addae8 | 4594 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
915902cb DS |
4595 | if ((zvrf = vrf->info) == NULL) |
4596 | continue; | |
4597 | ||
d62a17ae | 4598 | rib_sweep_table(zvrf->table[AFI_IP][SAFI_UNICAST]); |
4599 | rib_sweep_table(zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4600 | } | |
95a29032 | 4601 | |
89272910 | 4602 | zebra_router_sweep_route(); |
38e40db1 | 4603 | zebra_router_sweep_nhgs(); |
718e3744 | 4604 | } |
2ea1ab1c VT |
4605 | |
4606 | /* Remove specific by protocol routes from 'table'. */ | |
d7c0a89a | 4607 | unsigned long rib_score_proto_table(uint8_t proto, unsigned short instance, |
47a08aa9 | 4608 | struct route_table *table) |
d62a17ae | 4609 | { |
4610 | struct route_node *rn; | |
4611 | struct route_entry *re; | |
4612 | struct route_entry *next; | |
4613 | unsigned long n = 0; | |
4614 | ||
4615 | if (table) | |
4616 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) | |
a2addae8 | 4617 | RNODE_FOREACH_RE_SAFE (rn, re, next) { |
d62a17ae | 4618 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
4619 | continue; | |
4620 | if (re->type == proto | |
4621 | && re->instance == instance) { | |
4622 | rib_delnode(rn, re); | |
4623 | n++; | |
4624 | } | |
4625 | } | |
4626 | return n; | |
2ea1ab1c VT |
4627 | } |
4628 | ||
4629 | /* Remove specific by protocol routes. */ | |
d7c0a89a | 4630 | unsigned long rib_score_proto(uint8_t proto, unsigned short instance) |
2ea1ab1c | 4631 | { |
d62a17ae | 4632 | struct vrf *vrf; |
4633 | struct zebra_vrf *zvrf; | |
d8612e65 | 4634 | struct other_route_table *ort; |
d62a17ae | 4635 | unsigned long cnt = 0; |
78104b9b | 4636 | |
d8612e65 DS |
4637 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
4638 | zvrf = vrf->info; | |
4639 | if (!zvrf) | |
4640 | continue; | |
78104b9b | 4641 | |
d8612e65 DS |
4642 | cnt += rib_score_proto_table(proto, instance, |
4643 | zvrf->table[AFI_IP][SAFI_UNICAST]) | |
4644 | + rib_score_proto_table( | |
4645 | proto, instance, | |
4646 | zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
4647 | ||
81fddbe7 | 4648 | frr_each(otable, &zvrf->other_tables, ort) cnt += |
d8612e65 DS |
4649 | rib_score_proto_table(proto, instance, ort->table); |
4650 | } | |
47a08aa9 | 4651 | |
d62a17ae | 4652 | return cnt; |
2ea1ab1c VT |
4653 | } |
4654 | ||
718e3744 | 4655 | /* Close RIB and clean up kernel routes. */ |
d62a17ae | 4656 | void rib_close_table(struct route_table *table) |
718e3744 | 4657 | { |
d62a17ae | 4658 | struct route_node *rn; |
5f7a4718 | 4659 | rib_dest_t *dest; |
718e3744 | 4660 | |
1e9f448f DS |
4661 | if (!table) |
4662 | return; | |
9fd92e3c | 4663 | |
5f7a4718 DS |
4664 | for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) { |
4665 | dest = rib_dest_from_rnode(rn); | |
1e9f448f | 4666 | |
5f7a4718 | 4667 | if (dest && dest->selected_fib) { |
3cdba47a DS |
4668 | rib_uninstall_kernel(rn, dest->selected_fib); |
4669 | dest->selected_fib = NULL; | |
1e9f448f | 4670 | } |
5f7a4718 | 4671 | } |
718e3744 | 4672 | } |
4673 | ||
9bd9717b MS |
4674 | /* |
4675 | * Handler for async dataplane results after a pseudowire installation | |
4676 | */ | |
f00b37e7 | 4677 | static void handle_pw_result(struct zebra_dplane_ctx *ctx) |
9bd9717b | 4678 | { |
9bd9717b MS |
4679 | struct zebra_pw *pw; |
4680 | struct zebra_vrf *vrf; | |
4681 | ||
4682 | /* The pseudowire code assumes success - we act on an error | |
4683 | * result for installation attempts here. | |
4684 | */ | |
4685 | if (dplane_ctx_get_op(ctx) != DPLANE_OP_PW_INSTALL) | |
f00b37e7 | 4686 | return; |
9bd9717b MS |
4687 | |
4688 | if (dplane_ctx_get_status(ctx) != ZEBRA_DPLANE_REQUEST_SUCCESS) { | |
4689 | vrf = zebra_vrf_lookup_by_id(dplane_ctx_get_vrf(ctx)); | |
7c7ef4a8 | 4690 | pw = zebra_pw_find(vrf, dplane_ctx_get_ifname(ctx)); |
9bd9717b | 4691 | if (pw) |
fd563cc7 KS |
4692 | zebra_pw_install_failure(pw, |
4693 | dplane_ctx_get_pw_status(ctx)); | |
9bd9717b | 4694 | } |
9bd9717b MS |
4695 | } |
4696 | ||
7cdb1a84 | 4697 | /* |
d37f4d6c MS |
4698 | * Handle results from the dataplane system. Dequeue update context |
4699 | * structs, dispatch to appropriate internal handlers. | |
7cdb1a84 | 4700 | */ |
e6685141 | 4701 | static void rib_process_dplane_results(struct event *thread) |
7cdb1a84 | 4702 | { |
25779064 | 4703 | struct zebra_dplane_ctx *ctx; |
ac96497c | 4704 | struct dplane_ctx_list_head ctxlist; |
2fc69f03 | 4705 | bool shut_p = false; |
4c206c8f MS |
4706 | |
4707 | /* Dequeue a list of completed updates with one lock/unlock cycle */ | |
7cdb1a84 MS |
4708 | |
4709 | do { | |
ac96497c | 4710 | dplane_ctx_q_init(&ctxlist); |
4c206c8f | 4711 | |
7cdb1a84 | 4712 | /* Take lock controlling queue of results */ |
cb1991af | 4713 | frr_with_mutex (&dplane_mutex) { |
d37f4d6c | 4714 | /* Dequeue list of context structs */ |
4c206c8f | 4715 | dplane_ctx_list_append(&ctxlist, &rib_dplane_q); |
7cdb1a84 | 4716 | } |
7cdb1a84 | 4717 | |
4c206c8f MS |
4718 | /* Dequeue context block */ |
4719 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4720 | ||
4721 | /* If we've emptied the results queue, we're done */ | |
4722 | if (ctx == NULL) | |
7cdb1a84 | 4723 | break; |
7cdb1a84 | 4724 | |
2fc69f03 MS |
4725 | /* If zebra is shutting down, avoid processing results, |
4726 | * just drain the results queue. | |
4727 | */ | |
4728 | shut_p = atomic_load_explicit(&zrouter.in_shutdown, | |
4729 | memory_order_relaxed); | |
4730 | if (shut_p) { | |
4731 | while (ctx) { | |
4732 | dplane_ctx_fini(&ctx); | |
4733 | ||
4734 | ctx = dplane_ctx_dequeue(&ctxlist); | |
4735 | } | |
4736 | ||
4737 | continue; | |
4738 | } | |
4739 | ||
1247efcc DL |
4740 | #ifdef HAVE_SCRIPTING |
4741 | char *script_name = frrscript_names_get_script_name( | |
4742 | ZEBRA_ON_RIB_PROCESS_HOOK_CALL); | |
4743 | ||
4744 | int ret = 1; | |
4745 | struct frrscript *fs; | |
4746 | ||
4747 | if (script_name) { | |
4748 | fs = frrscript_new(script_name); | |
4749 | if (fs) | |
4750 | ret = frrscript_load( | |
4751 | fs, ZEBRA_ON_RIB_PROCESS_HOOK_CALL, | |
4752 | NULL); | |
4753 | } | |
4754 | #endif /* HAVE_SCRIPTING */ | |
4755 | ||
4c206c8f | 4756 | while (ctx) { |
1247efcc DL |
4757 | |
4758 | #ifdef HAVE_SCRIPTING | |
4759 | if (ret == 0) | |
4760 | frrscript_call(fs, | |
4761 | ZEBRA_ON_RIB_PROCESS_HOOK_CALL, | |
4762 | ("ctx", ctx)); | |
4763 | #endif /* HAVE_SCRIPTING */ | |
4764 | ||
d37f4d6c MS |
4765 | switch (dplane_ctx_get_op(ctx)) { |
4766 | case DPLANE_OP_ROUTE_INSTALL: | |
4767 | case DPLANE_OP_ROUTE_UPDATE: | |
4768 | case DPLANE_OP_ROUTE_DELETE: | |
188a00e0 MS |
4769 | /* Bit of special case for route updates |
4770 | * that were generated by async notifications: | |
4771 | * we don't want to continue processing these | |
4772 | * in the rib. | |
4773 | */ | |
4774 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4775 | rib_process_result(ctx); | |
f00b37e7 | 4776 | break; |
d37f4d6c | 4777 | |
54818e3b MS |
4778 | case DPLANE_OP_ROUTE_NOTIFY: |
4779 | rib_process_dplane_notify(ctx); | |
d37f4d6c MS |
4780 | break; |
4781 | ||
9865e1c3 SW |
4782 | case DPLANE_OP_NH_INSTALL: |
4783 | case DPLANE_OP_NH_UPDATE: | |
4784 | case DPLANE_OP_NH_DELETE: | |
4785 | zebra_nhg_dplane_result(ctx); | |
4786 | break; | |
4787 | ||
d37f4d6c MS |
4788 | case DPLANE_OP_LSP_INSTALL: |
4789 | case DPLANE_OP_LSP_UPDATE: | |
4790 | case DPLANE_OP_LSP_DELETE: | |
188a00e0 MS |
4791 | /* Bit of special case for LSP updates |
4792 | * that were generated by async notifications: | |
4793 | * we don't want to continue processing these. | |
4794 | */ | |
4795 | if (dplane_ctx_get_notif_provider(ctx) == 0) | |
4796 | zebra_mpls_lsp_dplane_result(ctx); | |
f00b37e7 | 4797 | break; |
d37f4d6c | 4798 | |
104e3ad9 MS |
4799 | case DPLANE_OP_LSP_NOTIFY: |
4800 | zebra_mpls_process_dplane_notify(ctx); | |
d37f4d6c MS |
4801 | break; |
4802 | ||
9bd9717b MS |
4803 | case DPLANE_OP_PW_INSTALL: |
4804 | case DPLANE_OP_PW_UNINSTALL: | |
4805 | handle_pw_result(ctx); | |
4806 | break; | |
4807 | ||
cf363e1b MS |
4808 | case DPLANE_OP_SYS_ROUTE_ADD: |
4809 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
cf363e1b MS |
4810 | break; |
4811 | ||
036d93c0 MS |
4812 | case DPLANE_OP_MAC_INSTALL: |
4813 | case DPLANE_OP_MAC_DELETE: | |
4814 | zebra_vxlan_handle_result(ctx); | |
4815 | break; | |
4816 | ||
f62e5480 JU |
4817 | case DPLANE_OP_RULE_ADD: |
4818 | case DPLANE_OP_RULE_DELETE: | |
4819 | case DPLANE_OP_RULE_UPDATE: | |
5162e000 PG |
4820 | case DPLANE_OP_IPTABLE_ADD: |
4821 | case DPLANE_OP_IPTABLE_DELETE: | |
ef524230 PG |
4822 | case DPLANE_OP_IPSET_ADD: |
4823 | case DPLANE_OP_IPSET_DELETE: | |
4824 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
4825 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
f62e5480 JU |
4826 | zebra_pbr_dplane_result(ctx); |
4827 | break; | |
4828 | ||
d166308b MS |
4829 | case DPLANE_OP_INTF_ADDR_ADD: |
4830 | case DPLANE_OP_INTF_ADDR_DEL: | |
5d414138 SW |
4831 | case DPLANE_OP_INTF_INSTALL: |
4832 | case DPLANE_OP_INTF_UPDATE: | |
4833 | case DPLANE_OP_INTF_DELETE: | |
cd787a8a | 4834 | case DPLANE_OP_INTF_NETCONFIG: |
5d414138 | 4835 | zebra_if_dplane_result(ctx); |
cd787a8a MS |
4836 | break; |
4837 | ||
c317d3f2 SY |
4838 | case DPLANE_OP_TC_QDISC_INSTALL: |
4839 | case DPLANE_OP_TC_QDISC_UNINSTALL: | |
4840 | case DPLANE_OP_TC_CLASS_ADD: | |
4841 | case DPLANE_OP_TC_CLASS_DELETE: | |
4842 | case DPLANE_OP_TC_CLASS_UPDATE: | |
4843 | case DPLANE_OP_TC_FILTER_ADD: | |
4844 | case DPLANE_OP_TC_FILTER_DELETE: | |
4845 | case DPLANE_OP_TC_FILTER_UPDATE: | |
449a30ed SY |
4846 | break; |
4847 | ||
931fa60c MS |
4848 | /* Some op codes not handled here */ |
4849 | case DPLANE_OP_ADDR_INSTALL: | |
4850 | case DPLANE_OP_ADDR_UNINSTALL: | |
4851 | case DPLANE_OP_NEIGH_INSTALL: | |
4852 | case DPLANE_OP_NEIGH_UPDATE: | |
4853 | case DPLANE_OP_NEIGH_DELETE: | |
0a27a2fe PG |
4854 | case DPLANE_OP_NEIGH_IP_INSTALL: |
4855 | case DPLANE_OP_NEIGH_IP_DELETE: | |
0bbd4ff4 MS |
4856 | case DPLANE_OP_VTEP_ADD: |
4857 | case DPLANE_OP_VTEP_DELETE: | |
d68e74b4 | 4858 | case DPLANE_OP_NEIGH_DISCOVER: |
c60522f7 | 4859 | case DPLANE_OP_BR_PORT_UPDATE: |
e18747a9 | 4860 | case DPLANE_OP_NEIGH_TABLE_UPDATE: |
62b4b7e4 | 4861 | case DPLANE_OP_GRE_SET: |
931fa60c | 4862 | case DPLANE_OP_NONE: |
d37f4d6c | 4863 | break; |
931fa60c | 4864 | |
d37f4d6c | 4865 | } /* Dispatch by op code */ |
4c206c8f | 4866 | |
f00b37e7 | 4867 | dplane_ctx_fini(&ctx); |
4c206c8f MS |
4868 | ctx = dplane_ctx_dequeue(&ctxlist); |
4869 | } | |
4870 | ||
5709131c | 4871 | } while (1); |
7cdb1a84 MS |
4872 | } |
4873 | ||
4874 | /* | |
4875 | * Results are returned from the dataplane subsystem, in the context of | |
1bcea841 | 4876 | * the dataplane pthread. We enqueue the results here for processing by |
7cdb1a84 MS |
4877 | * the main thread later. |
4878 | */ | |
ac96497c | 4879 | static int rib_dplane_results(struct dplane_ctx_list_head *ctxlist) |
7cdb1a84 MS |
4880 | { |
4881 | /* Take lock controlling queue of results */ | |
cb1991af | 4882 | frr_with_mutex (&dplane_mutex) { |
4c206c8f MS |
4883 | /* Enqueue context blocks */ |
4884 | dplane_ctx_list_append(&rib_dplane_q, ctxlist); | |
7cdb1a84 | 4885 | } |
7cdb1a84 | 4886 | |
4c206c8f | 4887 | /* Ensure event is signalled to zebra main pthread */ |
907a2395 DS |
4888 | event_add_event(zrouter.master, rib_process_dplane_results, NULL, 0, |
4889 | &t_dplane); | |
7cdb1a84 | 4890 | |
5709131c | 4891 | return 0; |
7cdb1a84 MS |
4892 | } |
4893 | ||
eaa2716d SW |
4894 | /* |
4895 | * Ensure there are no empty slots in the route_info array. | |
4896 | * Every route type in zebra should be present there. | |
4897 | */ | |
4898 | static void check_route_info(void) | |
4899 | { | |
4900 | int len = array_size(route_info); | |
4901 | ||
4902 | /* | |
4903 | * ZEBRA_ROUTE_SYSTEM is special cased since | |
4904 | * its key is 0 anyway. | |
4905 | * | |
4906 | * ZEBRA_ROUTE_ALL is also ignored. | |
4907 | */ | |
4908 | for (int i = 0; i < len; i++) { | |
16d91fce DS |
4909 | assert(route_info[i].key >= ZEBRA_ROUTE_SYSTEM && |
4910 | route_info[i].key < ZEBRA_ROUTE_MAX); | |
8dc7a759 | 4911 | assert(route_info[i].meta_q_map < MQ_SIZE); |
eaa2716d SW |
4912 | } |
4913 | } | |
4914 | ||
718e3744 | 4915 | /* Routing information base initialize. */ |
d62a17ae | 4916 | void rib_init(void) |
718e3744 | 4917 | { |
eaa2716d SW |
4918 | check_route_info(); |
4919 | ||
2561d12e | 4920 | rib_queue_init(); |
7cdb1a84 MS |
4921 | |
4922 | /* Init dataplane, and register for results */ | |
4923 | pthread_mutex_init(&dplane_mutex, NULL); | |
ac96497c | 4924 | dplane_ctx_q_init(&rib_dplane_q); |
4c206c8f | 4925 | zebra_dplane_init(rib_dplane_results); |
718e3744 | 4926 | } |
0915bb0c AS |
4927 | |
4928 | /* | |
4929 | * vrf_id_get_next | |
4930 | * | |
4931 | * Get the first vrf id that is greater than the given vrf id if any. | |
4932 | * | |
2951a7a4 | 4933 | * Returns true if a vrf id was found, false otherwise. |
0915bb0c | 4934 | */ |
d62a17ae | 4935 | static inline int vrf_id_get_next(vrf_id_t vrf_id, vrf_id_t *next_id_p) |
0915bb0c | 4936 | { |
d62a17ae | 4937 | struct vrf *vrf; |
b72ede27 | 4938 | |
d62a17ae | 4939 | vrf = vrf_lookup_by_id(vrf_id); |
4940 | if (vrf) { | |
4941 | vrf = RB_NEXT(vrf_id_head, vrf); | |
4942 | if (vrf) { | |
4943 | *next_id_p = vrf->vrf_id; | |
4944 | return 1; | |
4945 | } | |
4946 | } | |
0915bb0c | 4947 | |
d62a17ae | 4948 | return 0; |
0915bb0c AS |
4949 | } |
4950 | ||
4951 | /* | |
4952 | * rib_tables_iter_next | |
4953 | * | |
4954 | * Returns the next table in the iteration. | |
4955 | */ | |
d62a17ae | 4956 | struct route_table *rib_tables_iter_next(rib_tables_iter_t *iter) |
4957 | { | |
4958 | struct route_table *table; | |
4959 | ||
4960 | /* | |
4961 | * Array that helps us go over all AFI/SAFI combinations via one | |
4962 | * index. | |
4963 | */ | |
2b64873d | 4964 | static const struct { |
d62a17ae | 4965 | afi_t afi; |
4966 | safi_t safi; | |
4967 | } afi_safis[] = { | |
4968 | {AFI_IP, SAFI_UNICAST}, {AFI_IP, SAFI_MULTICAST}, | |
4969 | {AFI_IP, SAFI_LABELED_UNICAST}, {AFI_IP6, SAFI_UNICAST}, | |
4970 | {AFI_IP6, SAFI_MULTICAST}, {AFI_IP6, SAFI_LABELED_UNICAST}, | |
4971 | }; | |
4972 | ||
4973 | table = NULL; | |
4974 | ||
4975 | switch (iter->state) { | |
4976 | ||
4977 | case RIB_TABLES_ITER_S_INIT: | |
4978 | iter->vrf_id = VRF_DEFAULT; | |
4979 | iter->afi_safi_ix = -1; | |
4980 | ||
4981 | /* Fall through */ | |
4982 | ||
4983 | case RIB_TABLES_ITER_S_ITERATING: | |
4984 | iter->afi_safi_ix++; | |
4985 | while (1) { | |
4986 | ||
4987 | while (iter->afi_safi_ix | |
7e3a1ec7 | 4988 | < (int)array_size(afi_safis)) { |
d62a17ae | 4989 | table = zebra_vrf_table( |
4990 | afi_safis[iter->afi_safi_ix].afi, | |
4991 | afi_safis[iter->afi_safi_ix].safi, | |
4992 | iter->vrf_id); | |
4993 | if (table) | |
4994 | break; | |
4995 | ||
4996 | iter->afi_safi_ix++; | |
4997 | } | |
4998 | ||
4999 | /* | |
5000 | * Found another table in this vrf. | |
5001 | */ | |
5002 | if (table) | |
5003 | break; | |
5004 | ||
5005 | /* | |
5006 | * Done with all tables in the current vrf, go to the | |
5007 | * next | |
5008 | * one. | |
5009 | */ | |
5010 | if (!vrf_id_get_next(iter->vrf_id, &iter->vrf_id)) | |
5011 | break; | |
5012 | ||
5013 | iter->afi_safi_ix = 0; | |
5014 | } | |
0915bb0c | 5015 | |
0915bb0c AS |
5016 | break; |
5017 | ||
d62a17ae | 5018 | case RIB_TABLES_ITER_S_DONE: |
5019 | return NULL; | |
0915bb0c AS |
5020 | } |
5021 | ||
d62a17ae | 5022 | if (table) |
5023 | iter->state = RIB_TABLES_ITER_S_ITERATING; | |
5024 | else | |
5025 | iter->state = RIB_TABLES_ITER_S_DONE; | |
0915bb0c | 5026 | |
d62a17ae | 5027 | return table; |
0915bb0c | 5028 | } |