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1 | /* Kernel communication using routing socket. | |
2 | * Copyright (C) 1999 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #ifndef HAVE_NETLINK | |
24 | ||
25 | #include <net/if_types.h> | |
26 | #ifdef __OpenBSD__ | |
27 | #include <netmpls/mpls.h> | |
28 | #endif | |
29 | ||
30 | #include "if.h" | |
31 | #include "prefix.h" | |
32 | #include "sockunion.h" | |
33 | #include "connected.h" | |
34 | #include "memory.h" | |
35 | #include "ioctl.h" | |
36 | #include "log.h" | |
37 | #include "table.h" | |
38 | #include "rib.h" | |
39 | #include "privs.h" | |
40 | #include "vrf.h" | |
41 | #include "lib_errors.h" | |
42 | ||
43 | #include "zebra/rt.h" | |
44 | #include "zebra/interface.h" | |
45 | #include "zebra/zebra_router.h" | |
46 | #include "zebra/debug.h" | |
47 | #include "zebra/kernel_socket.h" | |
48 | #include "zebra/rib.h" | |
49 | #include "zebra/zebra_errors.h" | |
50 | #include "zebra/zebra_ptm.h" | |
51 | ||
52 | extern struct zebra_privs_t zserv_privs; | |
53 | ||
54 | /* | |
55 | * Historically, the BSD routing socket has aligned data following a | |
56 | * struct sockaddr to sizeof(long), which was 4 bytes on some | |
57 | * platforms, and 8 bytes on others. NetBSD 6 changed the routing | |
58 | * socket to align to sizeof(uint64_t), which is 8 bytes. OS X | |
59 | * appears to align to sizeof(int), which is 4 bytes. | |
60 | * | |
61 | * Alignment of zero-sized sockaddrs is nonsensical, but historically | |
62 | * BSD defines RT_ROUNDUP(0) to be the alignment interval (rather than | |
63 | * 0). We follow this practice without questioning it, but it is a | |
64 | * bug if frr calls ROUNDUP with 0. | |
65 | */ | |
66 | #ifdef __APPLE__ | |
67 | #define ROUNDUP_TYPE int | |
68 | #else | |
69 | #define ROUNDUP_TYPE long | |
70 | #endif | |
71 | ||
72 | /* | |
73 | * Because of these varying conventions, the only sane approach is for | |
74 | * the <net/route.h> header to define some flavor of ROUNDUP macro. | |
75 | */ | |
76 | ||
77 | /* OS X (Xcode as of 2014-12) is known not to define RT_ROUNDUP */ | |
78 | #if defined(RT_ROUNDUP) | |
79 | #define ROUNDUP(a) RT_ROUNDUP(a) | |
80 | #endif /* defined(RT_ROUNDUP) */ | |
81 | ||
82 | /* | |
83 | * If ROUNDUP has not yet been defined in terms of platform-provided | |
84 | * defines, attempt to cope with heuristics. | |
85 | */ | |
86 | #if !defined(ROUNDUP) | |
87 | ||
88 | /* | |
89 | * If you're porting to a platform that changed RT_ROUNDUP but doesn't | |
90 | * have it in its headers, this will break rather obviously and you'll | |
91 | * have to fix it here. | |
92 | */ | |
93 | #define ROUNDUP(a) \ | |
94 | ((a) > 0 ? (1 + (((a)-1) | (sizeof(ROUNDUP_TYPE) - 1))) \ | |
95 | : sizeof(ROUNDUP_TYPE)) | |
96 | ||
97 | #endif /* defined(ROUNDUP) */ | |
98 | ||
99 | ||
100 | #if defined(SA_SIZE) | |
101 | /* SAROUNDUP is the only thing we need, and SA_SIZE provides that */ | |
102 | #define SAROUNDUP(a) SA_SIZE(a) | |
103 | #else /* !SA_SIZE */ | |
104 | /* | |
105 | * Given a pointer (sockaddr or void *), return the number of bytes | |
106 | * taken up by the sockaddr and any padding needed for alignment. | |
107 | */ | |
108 | #if defined(HAVE_STRUCT_SOCKADDR_SA_LEN) | |
109 | #define SAROUNDUP(X) ROUNDUP(((struct sockaddr *)(X))->sa_len) | |
110 | #else | |
111 | /* | |
112 | * One would hope all fixed-size structure definitions are aligned, | |
113 | * but round them up nonetheless. | |
114 | */ | |
115 | #define SAROUNDUP(X) \ | |
116 | (((struct sockaddr *)(X))->sa_family == AF_INET \ | |
117 | ? ROUNDUP(sizeof(struct sockaddr_in)) \ | |
118 | : (((struct sockaddr *)(X))->sa_family == AF_INET6 \ | |
119 | ? ROUNDUP(sizeof(struct sockaddr_in6)) \ | |
120 | : (((struct sockaddr *)(X))->sa_family == AF_LINK \ | |
121 | ? ROUNDUP(sizeof(struct sockaddr_dl)) \ | |
122 | : sizeof(struct sockaddr)))) | |
123 | #endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
124 | ||
125 | #endif /* !SA_SIZE */ | |
126 | ||
127 | /* Routing socket message types. */ | |
128 | const struct message rtm_type_str[] = {{RTM_ADD, "RTM_ADD"}, | |
129 | {RTM_DELETE, "RTM_DELETE"}, | |
130 | {RTM_CHANGE, "RTM_CHANGE"}, | |
131 | {RTM_GET, "RTM_GET"}, | |
132 | {RTM_LOSING, "RTM_LOSING"}, | |
133 | {RTM_REDIRECT, "RTM_REDIRECT"}, | |
134 | {RTM_MISS, "RTM_MISS"}, | |
135 | #ifdef RTM_LOCK | |
136 | {RTM_LOCK, "RTM_LOCK"}, | |
137 | #endif /* RTM_LOCK */ | |
138 | #ifdef OLDADD | |
139 | {RTM_OLDADD, "RTM_OLDADD"}, | |
140 | #endif /* RTM_OLDADD */ | |
141 | #ifdef RTM_OLDDEL | |
142 | {RTM_OLDDEL, "RTM_OLDDEL"}, | |
143 | #endif /* RTM_OLDDEL */ | |
144 | #ifdef RTM_RESOLVE | |
145 | {RTM_RESOLVE, "RTM_RESOLVE"}, | |
146 | #endif /* RTM_RESOLVE */ | |
147 | {RTM_NEWADDR, "RTM_NEWADDR"}, | |
148 | {RTM_DELADDR, "RTM_DELADDR"}, | |
149 | {RTM_IFINFO, "RTM_IFINFO"}, | |
150 | #ifdef RTM_OIFINFO | |
151 | {RTM_OIFINFO, "RTM_OIFINFO"}, | |
152 | #endif /* RTM_OIFINFO */ | |
153 | #ifdef RTM_NEWMADDR | |
154 | {RTM_NEWMADDR, "RTM_NEWMADDR"}, | |
155 | #endif /* RTM_NEWMADDR */ | |
156 | #ifdef RTM_DELMADDR | |
157 | {RTM_DELMADDR, "RTM_DELMADDR"}, | |
158 | #endif /* RTM_DELMADDR */ | |
159 | #ifdef RTM_IFANNOUNCE | |
160 | {RTM_IFANNOUNCE, "RTM_IFANNOUNCE"}, | |
161 | #endif /* RTM_IFANNOUNCE */ | |
162 | #ifdef RTM_IEEE80211 | |
163 | {RTM_IEEE80211, "RTM_IEEE80211"}, | |
164 | #endif | |
165 | {0}}; | |
166 | ||
167 | static const struct message rtm_flag_str[] = {{RTF_UP, "UP"}, | |
168 | {RTF_GATEWAY, "GATEWAY"}, | |
169 | {RTF_HOST, "HOST"}, | |
170 | {RTF_REJECT, "REJECT"}, | |
171 | {RTF_DYNAMIC, "DYNAMIC"}, | |
172 | {RTF_MODIFIED, "MODIFIED"}, | |
173 | {RTF_DONE, "DONE"}, | |
174 | #ifdef RTF_MASK | |
175 | {RTF_MASK, "MASK"}, | |
176 | #endif /* RTF_MASK */ | |
177 | #ifdef RTF_CLONING | |
178 | {RTF_CLONING, "CLONING"}, | |
179 | #endif /* RTF_CLONING */ | |
180 | #ifdef RTF_XRESOLVE | |
181 | {RTF_XRESOLVE, "XRESOLVE"}, | |
182 | #endif /* RTF_XRESOLVE */ | |
183 | #ifdef RTF_LLINFO | |
184 | {RTF_LLINFO, "LLINFO"}, | |
185 | #endif /* RTF_LLINFO */ | |
186 | {RTF_STATIC, "STATIC"}, | |
187 | {RTF_BLACKHOLE, "BLACKHOLE"}, | |
188 | #ifdef RTF_PRIVATE | |
189 | {RTF_PRIVATE, "PRIVATE"}, | |
190 | #endif /* RTF_PRIVATE */ | |
191 | {RTF_PROTO1, "PROTO1"}, | |
192 | {RTF_PROTO2, "PROTO2"}, | |
193 | #ifdef RTF_PRCLONING | |
194 | {RTF_PRCLONING, "PRCLONING"}, | |
195 | #endif /* RTF_PRCLONING */ | |
196 | #ifdef RTF_WASCLONED | |
197 | {RTF_WASCLONED, "WASCLONED"}, | |
198 | #endif /* RTF_WASCLONED */ | |
199 | #ifdef RTF_PROTO3 | |
200 | {RTF_PROTO3, "PROTO3"}, | |
201 | #endif /* RTF_PROTO3 */ | |
202 | #ifdef RTF_PINNED | |
203 | {RTF_PINNED, "PINNED"}, | |
204 | #endif /* RTF_PINNED */ | |
205 | #ifdef RTF_LOCAL | |
206 | {RTF_LOCAL, "LOCAL"}, | |
207 | #endif /* RTF_LOCAL */ | |
208 | #ifdef RTF_BROADCAST | |
209 | {RTF_BROADCAST, "BROADCAST"}, | |
210 | #endif /* RTF_BROADCAST */ | |
211 | #ifdef RTF_MULTICAST | |
212 | {RTF_MULTICAST, "MULTICAST"}, | |
213 | #endif /* RTF_MULTICAST */ | |
214 | #ifdef RTF_MULTIRT | |
215 | {RTF_MULTIRT, "MULTIRT"}, | |
216 | #endif /* RTF_MULTIRT */ | |
217 | #ifdef RTF_SETSRC | |
218 | {RTF_SETSRC, "SETSRC"}, | |
219 | #endif /* RTF_SETSRC */ | |
220 | {0}}; | |
221 | ||
222 | /* Kernel routing update socket. */ | |
223 | int routing_sock = -1; | |
224 | ||
225 | /* Kernel dataplane routing update socket, used in the dataplane pthread | |
226 | * context. | |
227 | */ | |
228 | int dplane_routing_sock = -1; | |
229 | ||
230 | /* Yes I'm checking ugly routing socket behavior. */ | |
231 | /* #define DEBUG */ | |
232 | ||
233 | size_t _rta_get(caddr_t sap, void *destp, size_t destlen, bool checkaf); | |
234 | size_t rta_get(caddr_t sap, void *dest, size_t destlen); | |
235 | size_t rta_getattr(caddr_t sap, void *destp, size_t destlen); | |
236 | size_t rta_getsdlname(caddr_t sap, void *dest, short *destlen); | |
237 | const char *rtatostr(unsigned int flags, char *buf, size_t buflen); | |
238 | ||
239 | /* Supported address family check. */ | |
240 | static inline int af_check(int family) | |
241 | { | |
242 | if (family == AF_INET) | |
243 | return 1; | |
244 | if (family == AF_INET6) | |
245 | return 1; | |
246 | return 0; | |
247 | } | |
248 | ||
249 | size_t _rta_get(caddr_t sap, void *destp, size_t destlen, bool checkaf) | |
250 | { | |
251 | struct sockaddr *sa = (struct sockaddr *)sap; | |
252 | struct sockaddr_dl *sdl; | |
253 | uint8_t *dest = destp; | |
254 | size_t tlen, copylen; | |
255 | ||
256 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
257 | copylen = sa->sa_len; | |
258 | tlen = (copylen == 0) ? sizeof(ROUNDUP_TYPE) : ROUNDUP(copylen); | |
259 | #else /* !HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
260 | copylen = tlen = SAROUNDUP(sap); | |
261 | #endif /* !HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
262 | ||
263 | if (copylen > 0 && dest != NULL) { | |
264 | if (checkaf && af_check(sa->sa_family) == 0) | |
265 | return tlen; | |
266 | /* | |
267 | * Handle sockaddr_dl corner case: | |
268 | * RTA_NETMASK might be AF_LINK, but it doesn't anything | |
269 | * relevant (e.g. zeroed out fields). Check for this | |
270 | * case and avoid warning log message. | |
271 | */ | |
272 | if (sa->sa_family == AF_LINK) { | |
273 | sdl = (struct sockaddr_dl *)sa; | |
274 | if (sdl->sdl_index == 0 || sdl->sdl_nlen == 0) | |
275 | copylen = destlen; | |
276 | } | |
277 | ||
278 | if (copylen > destlen) { | |
279 | zlog_warn( | |
280 | "%s: destination buffer too small (%zu vs %zu)", | |
281 | __func__, copylen, destlen); | |
282 | memcpy(dest, sap, destlen); | |
283 | } else | |
284 | memcpy(dest, sap, copylen); | |
285 | } | |
286 | ||
287 | return tlen; | |
288 | } | |
289 | ||
290 | size_t rta_get(caddr_t sap, void *destp, size_t destlen) | |
291 | { | |
292 | return _rta_get(sap, destp, destlen, true); | |
293 | } | |
294 | ||
295 | size_t rta_getattr(caddr_t sap, void *destp, size_t destlen) | |
296 | { | |
297 | return _rta_get(sap, destp, destlen, false); | |
298 | } | |
299 | ||
300 | size_t rta_getsdlname(caddr_t sap, void *destp, short *destlen) | |
301 | { | |
302 | struct sockaddr_dl *sdl = (struct sockaddr_dl *)sap; | |
303 | uint8_t *dest = destp; | |
304 | size_t tlen, copylen; | |
305 | ||
306 | copylen = sdl->sdl_nlen; | |
307 | #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
308 | struct sockaddr *sa = (struct sockaddr *)sap; | |
309 | ||
310 | tlen = (sa->sa_len == 0) ? sizeof(ROUNDUP_TYPE) : ROUNDUP(sa->sa_len); | |
311 | #else /* !HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
312 | tlen = SAROUNDUP(sap); | |
313 | #endif /* !HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
314 | ||
315 | if (copylen > 0 && dest != NULL && sdl->sdl_family == AF_LINK) { | |
316 | if (copylen > IFNAMSIZ) { | |
317 | zlog_warn( | |
318 | "%s: destination buffer too small (%zu vs %d)", | |
319 | __func__, copylen, IFNAMSIZ); | |
320 | memcpy(dest, sdl->sdl_data, IFNAMSIZ); | |
321 | dest[IFNAMSIZ] = 0; | |
322 | *destlen = IFNAMSIZ; | |
323 | } else { | |
324 | memcpy(dest, sdl->sdl_data, copylen); | |
325 | dest[copylen] = 0; | |
326 | *destlen = copylen; | |
327 | } | |
328 | } else | |
329 | *destlen = 0; | |
330 | ||
331 | return tlen; | |
332 | } | |
333 | ||
334 | const char *rtatostr(unsigned int flags, char *buf, size_t buflen) | |
335 | { | |
336 | const char *flagstr, *bufstart; | |
337 | int bit, wlen; | |
338 | char ustr[32]; | |
339 | ||
340 | /* Hold the pointer to the buffer beginning. */ | |
341 | bufstart = buf; | |
342 | ||
343 | for (bit = 1; bit; bit <<= 1) { | |
344 | if ((flags & bit) == 0) | |
345 | continue; | |
346 | ||
347 | switch (bit) { | |
348 | case RTA_DST: | |
349 | flagstr = "DST"; | |
350 | break; | |
351 | case RTA_GATEWAY: | |
352 | flagstr = "GATEWAY"; | |
353 | break; | |
354 | case RTA_NETMASK: | |
355 | flagstr = "NETMASK"; | |
356 | break; | |
357 | #ifdef RTA_GENMASK | |
358 | case RTA_GENMASK: | |
359 | flagstr = "GENMASK"; | |
360 | break; | |
361 | #endif /* RTA_GENMASK */ | |
362 | case RTA_IFP: | |
363 | flagstr = "IFP"; | |
364 | break; | |
365 | case RTA_IFA: | |
366 | flagstr = "IFA"; | |
367 | break; | |
368 | #ifdef RTA_AUTHOR | |
369 | case RTA_AUTHOR: | |
370 | flagstr = "AUTHOR"; | |
371 | break; | |
372 | #endif /* RTA_AUTHOR */ | |
373 | case RTA_BRD: | |
374 | flagstr = "BRD"; | |
375 | break; | |
376 | #ifdef RTA_SRC | |
377 | case RTA_SRC: | |
378 | flagstr = "SRC"; | |
379 | break; | |
380 | #endif /* RTA_SRC */ | |
381 | #ifdef RTA_SRCMASK | |
382 | case RTA_SRCMASK: | |
383 | flagstr = "SRCMASK"; | |
384 | break; | |
385 | #endif /* RTA_SRCMASK */ | |
386 | #ifdef RTA_LABEL | |
387 | case RTA_LABEL: | |
388 | flagstr = "LABEL"; | |
389 | break; | |
390 | #endif /* RTA_LABEL */ | |
391 | ||
392 | default: | |
393 | snprintf(ustr, sizeof(ustr), "0x%x", bit); | |
394 | flagstr = ustr; | |
395 | break; | |
396 | } | |
397 | ||
398 | wlen = snprintf(buf, buflen, "%s,", flagstr); | |
399 | buf += wlen; | |
400 | buflen -= wlen; | |
401 | } | |
402 | ||
403 | /* Check for empty buffer. */ | |
404 | if (bufstart != buf) | |
405 | buf--; | |
406 | ||
407 | /* Remove the last comma. */ | |
408 | *buf = 0; | |
409 | ||
410 | return bufstart; | |
411 | } | |
412 | ||
413 | /* Dump routing table flag for debug purpose. */ | |
414 | static void rtm_flag_dump(int flag) | |
415 | { | |
416 | const struct message *mes; | |
417 | static char buf[BUFSIZ]; | |
418 | ||
419 | buf[0] = '\0'; | |
420 | for (mes = rtm_flag_str; mes->key != 0; mes++) { | |
421 | if (mes->key & flag) { | |
422 | strlcat(buf, mes->str, BUFSIZ); | |
423 | strlcat(buf, " ", BUFSIZ); | |
424 | } | |
425 | } | |
426 | zlog_debug("Kernel: %s", buf); | |
427 | } | |
428 | ||
429 | #ifdef RTM_IFANNOUNCE | |
430 | /* Interface adding function */ | |
431 | static int ifan_read(struct if_announcemsghdr *ifan) | |
432 | { | |
433 | struct interface *ifp; | |
434 | ||
435 | ifp = if_lookup_by_index(ifan->ifan_index, VRF_DEFAULT); | |
436 | ||
437 | if (ifp) | |
438 | assert((ifp->ifindex == ifan->ifan_index) | |
439 | || (ifp->ifindex == IFINDEX_INTERNAL)); | |
440 | ||
441 | if ((ifp == NULL) || ((ifp->ifindex == IFINDEX_INTERNAL) | |
442 | && (ifan->ifan_what == IFAN_ARRIVAL))) { | |
443 | if (IS_ZEBRA_DEBUG_KERNEL) | |
444 | zlog_debug( | |
445 | "%s: creating interface for ifindex %d, name %s", | |
446 | __func__, ifan->ifan_index, ifan->ifan_name); | |
447 | ||
448 | /* Create Interface */ | |
449 | ifp = if_get_by_name(ifan->ifan_name, VRF_DEFAULT, | |
450 | VRF_DEFAULT_NAME); | |
451 | if_set_index(ifp, ifan->ifan_index); | |
452 | ||
453 | if_get_metric(ifp); | |
454 | if_add_update(ifp); | |
455 | } else if (ifp != NULL && ifan->ifan_what == IFAN_DEPARTURE) | |
456 | if_delete_update(&ifp); | |
457 | ||
458 | if (ifp) { | |
459 | if_get_flags(ifp); | |
460 | if_get_mtu(ifp); | |
461 | if_get_metric(ifp); | |
462 | } | |
463 | if (IS_ZEBRA_DEBUG_KERNEL) | |
464 | zlog_debug("%s: interface %s index %d", __func__, | |
465 | ifan->ifan_name, ifan->ifan_index); | |
466 | ||
467 | return 0; | |
468 | } | |
469 | #endif /* RTM_IFANNOUNCE */ | |
470 | ||
471 | #ifdef HAVE_BSD_IFI_LINK_STATE | |
472 | /* BSD link detect translation */ | |
473 | static void bsd_linkdetect_translate(struct if_msghdr *ifm) | |
474 | { | |
475 | if ((ifm->ifm_data.ifi_link_state >= LINK_STATE_UP) | |
476 | || (ifm->ifm_data.ifi_link_state == LINK_STATE_UNKNOWN)) | |
477 | SET_FLAG(ifm->ifm_flags, IFF_RUNNING); | |
478 | else | |
479 | UNSET_FLAG(ifm->ifm_flags, IFF_RUNNING); | |
480 | } | |
481 | #endif /* HAVE_BSD_IFI_LINK_STATE */ | |
482 | ||
483 | static enum zebra_link_type sdl_to_zebra_link_type(unsigned int sdlt) | |
484 | { | |
485 | switch (sdlt) { | |
486 | case IFT_ETHER: | |
487 | return ZEBRA_LLT_ETHER; | |
488 | case IFT_X25: | |
489 | return ZEBRA_LLT_X25; | |
490 | case IFT_FDDI: | |
491 | return ZEBRA_LLT_FDDI; | |
492 | case IFT_PPP: | |
493 | return ZEBRA_LLT_PPP; | |
494 | case IFT_LOOP: | |
495 | return ZEBRA_LLT_LOOPBACK; | |
496 | case IFT_SLIP: | |
497 | return ZEBRA_LLT_SLIP; | |
498 | case IFT_ARCNET: | |
499 | return ZEBRA_LLT_ARCNET; | |
500 | case IFT_ATM: | |
501 | return ZEBRA_LLT_ATM; | |
502 | case IFT_LOCALTALK: | |
503 | return ZEBRA_LLT_LOCALTLK; | |
504 | case IFT_HIPPI: | |
505 | return ZEBRA_LLT_HIPPI; | |
506 | #ifdef IFT_IEEE1394 | |
507 | case IFT_IEEE1394: | |
508 | return ZEBRA_LLT_IEEE1394; | |
509 | #endif | |
510 | ||
511 | default: | |
512 | return ZEBRA_LLT_UNKNOWN; | |
513 | } | |
514 | } | |
515 | ||
516 | /* | |
517 | * Handle struct if_msghdr obtained from reading routing socket or | |
518 | * sysctl (from interface_list). There may or may not be sockaddrs | |
519 | * present after the header. | |
520 | */ | |
521 | int ifm_read(struct if_msghdr *ifm) | |
522 | { | |
523 | struct interface *ifp = NULL; | |
524 | struct sockaddr_dl *sdl = NULL; | |
525 | char ifname[IFNAMSIZ]; | |
526 | short ifnlen = 0; | |
527 | int maskbit; | |
528 | caddr_t cp; | |
529 | char fbuf[64]; | |
530 | ||
531 | /* terminate ifname at head (for strnlen) and tail (for safety) */ | |
532 | ifname[IFNAMSIZ - 1] = '\0'; | |
533 | ||
534 | /* paranoia: sanity check structure */ | |
535 | if (ifm->ifm_msglen < sizeof(struct if_msghdr)) { | |
536 | flog_err(EC_ZEBRA_NETLINK_LENGTH_ERROR, | |
537 | "ifm_read: ifm->ifm_msglen %d too short", | |
538 | ifm->ifm_msglen); | |
539 | return -1; | |
540 | } | |
541 | ||
542 | /* | |
543 | * Check for a sockaddr_dl following the message. First, point to | |
544 | * where a socakddr might be if one follows the message. | |
545 | */ | |
546 | cp = (void *)(ifm + 1); | |
547 | ||
548 | /* Look up for RTA_IFP and skip others. */ | |
549 | for (maskbit = 1; maskbit; maskbit <<= 1) { | |
550 | if ((maskbit & ifm->ifm_addrs) == 0) | |
551 | continue; | |
552 | if (maskbit != RTA_IFP) { | |
553 | cp += rta_get(cp, NULL, 0); | |
554 | continue; | |
555 | } | |
556 | ||
557 | /* Save the pointer to the structure. */ | |
558 | sdl = (struct sockaddr_dl *)cp; | |
559 | cp += rta_getsdlname(cp, ifname, &ifnlen); | |
560 | } | |
561 | ||
562 | if (IS_ZEBRA_DEBUG_KERNEL) | |
563 | zlog_debug("%s: sdl ifname %s addrs {%s}", __func__, | |
564 | (ifnlen ? ifname : "(nil)"), | |
565 | rtatostr(ifm->ifm_addrs, fbuf, sizeof(fbuf))); | |
566 | ||
567 | /* | |
568 | * Look up on ifindex first, because ifindices are the primary handle | |
569 | * for | |
570 | * interfaces across the user/kernel boundary, for most systems. (Some | |
571 | * messages, such as up/down status changes on NetBSD, do not include a | |
572 | * sockaddr_dl). | |
573 | */ | |
574 | if ((ifp = if_lookup_by_index(ifm->ifm_index, VRF_DEFAULT)) != NULL) { | |
575 | /* we have an ifp, verify that the name matches as some systems, | |
576 | * eg Solaris, have a 1:many association of ifindex:ifname | |
577 | * if they dont match, we dont have the correct ifp and should | |
578 | * set it back to NULL to let next check do lookup by name | |
579 | */ | |
580 | if (ifnlen && (strncmp(ifp->name, ifname, IFNAMSIZ) != 0)) { | |
581 | if (IS_ZEBRA_DEBUG_KERNEL) | |
582 | zlog_debug( | |
583 | "%s: ifp name %s doesn't match sdl name %s", | |
584 | __func__, ifp->name, ifname); | |
585 | ifp = NULL; | |
586 | } | |
587 | } | |
588 | ||
589 | /* | |
590 | * If we dont have an ifp, try looking up by name. Particularly as some | |
591 | * systems (Solaris) have a 1:many mapping of ifindex:ifname - the | |
592 | * ifname | |
593 | * is therefore our unique handle to that interface. | |
594 | * | |
595 | * Interfaces specified in the configuration file for which the ifindex | |
596 | * has not been determined will have ifindex == IFINDEX_INTERNAL, and | |
597 | * such | |
598 | * interfaces are found by this search, and then their ifindex values | |
599 | * can | |
600 | * be filled in. | |
601 | */ | |
602 | if ((ifp == NULL) && ifnlen) | |
603 | ifp = if_lookup_by_name(ifname, VRF_DEFAULT); | |
604 | ||
605 | /* | |
606 | * If ifp still does not exist or has an invalid index | |
607 | * (IFINDEX_INTERNAL), | |
608 | * create or fill in an interface. | |
609 | */ | |
610 | if ((ifp == NULL) || (ifp->ifindex == IFINDEX_INTERNAL)) { | |
611 | /* | |
612 | * To create or fill in an interface, a sockaddr_dl (via | |
613 | * RTA_IFP) is required. | |
614 | */ | |
615 | if (!ifnlen) { | |
616 | zlog_debug("Interface index %d (new) missing ifname", | |
617 | ifm->ifm_index); | |
618 | return -1; | |
619 | } | |
620 | ||
621 | #ifndef RTM_IFANNOUNCE | |
622 | /* Down->Down interface should be ignored here. | |
623 | * See further comment below. | |
624 | */ | |
625 | if (!CHECK_FLAG(ifm->ifm_flags, IFF_UP)) | |
626 | return 0; | |
627 | #endif /* !RTM_IFANNOUNCE */ | |
628 | ||
629 | if (ifp == NULL) { | |
630 | /* Interface that zebra was not previously aware of, so | |
631 | * create. */ | |
632 | ifp = if_get_by_name(ifname, VRF_DEFAULT, | |
633 | VRF_DEFAULT_NAME); | |
634 | if (IS_ZEBRA_DEBUG_KERNEL) | |
635 | zlog_debug("%s: creating ifp for ifindex %d", | |
636 | __func__, ifm->ifm_index); | |
637 | } | |
638 | ||
639 | if (IS_ZEBRA_DEBUG_KERNEL) | |
640 | zlog_debug( | |
641 | "%s: updated/created ifp, ifname %s, ifindex %d", | |
642 | __func__, ifp->name, ifp->ifindex); | |
643 | /* | |
644 | * Fill in newly created interface structure, or larval | |
645 | * structure with ifindex IFINDEX_INTERNAL. | |
646 | */ | |
647 | if_set_index(ifp, ifm->ifm_index); | |
648 | ||
649 | #ifdef HAVE_BSD_IFI_LINK_STATE /* translate BSD kernel msg for link-state */ | |
650 | bsd_linkdetect_translate(ifm); | |
651 | #endif /* HAVE_BSD_IFI_LINK_STATE */ | |
652 | ||
653 | if_flags_update(ifp, ifm->ifm_flags); | |
654 | #if defined(__bsdi__) | |
655 | if_kvm_get_mtu(ifp); | |
656 | #else | |
657 | if_get_mtu(ifp); | |
658 | #endif /* __bsdi__ */ | |
659 | if_get_metric(ifp); | |
660 | ||
661 | /* | |
662 | * XXX sockaddr_dl contents can be larger than the structure | |
663 | * definition. There are 2 big families here: | |
664 | * - BSD has sdl_len + sdl_data[16] + overruns sdl_data | |
665 | * we MUST use sdl_len here or we'll truncate data. | |
666 | * - Solaris has no sdl_len, but sdl_data[244] | |
667 | * presumably, it's not going to run past that, so sizeof() | |
668 | * is fine here. | |
669 | * a nonzero ifnlen from rta_getsdlname() means sdl is valid | |
670 | */ | |
671 | ifp->ll_type = ZEBRA_LLT_UNKNOWN; | |
672 | ifp->hw_addr_len = 0; | |
673 | if (ifnlen) { | |
674 | #ifdef HAVE_STRUCT_SOCKADDR_DL_SDL_LEN | |
675 | memcpy(&((struct zebra_if *)ifp->info)->sdl, sdl, | |
676 | sdl->sdl_len); | |
677 | #else | |
678 | memcpy(&((struct zebra_if *)ifp->info)->sdl, sdl, | |
679 | sizeof(struct sockaddr_dl)); | |
680 | #endif /* HAVE_STRUCT_SOCKADDR_DL_SDL_LEN */ | |
681 | ||
682 | ifp->ll_type = sdl_to_zebra_link_type(sdl->sdl_type); | |
683 | if (sdl->sdl_alen <= sizeof(ifp->hw_addr)) { | |
684 | memcpy(ifp->hw_addr, LLADDR(sdl), | |
685 | sdl->sdl_alen); | |
686 | ifp->hw_addr_len = sdl->sdl_alen; | |
687 | } | |
688 | } | |
689 | ||
690 | if_add_update(ifp); | |
691 | } else | |
692 | /* | |
693 | * Interface structure exists. Adjust stored flags from | |
694 | * notification. If interface has up->down or down->up | |
695 | * transition, call state change routines (to adjust routes, | |
696 | * notify routing daemons, etc.). (Other flag changes are stored | |
697 | * but apparently do not trigger action.) | |
698 | */ | |
699 | { | |
700 | if (ifp->ifindex != ifm->ifm_index) { | |
701 | zlog_debug( | |
702 | "%s: index mismatch, ifname %s, ifp index %d, ifm index %d", | |
703 | __func__, ifp->name, ifp->ifindex, | |
704 | ifm->ifm_index); | |
705 | return -1; | |
706 | } | |
707 | ||
708 | #ifdef HAVE_BSD_IFI_LINK_STATE /* translate BSD kernel msg for link-state */ | |
709 | bsd_linkdetect_translate(ifm); | |
710 | #endif /* HAVE_BSD_IFI_LINK_STATE */ | |
711 | ||
712 | /* update flags and handle operative->inoperative transition, if | |
713 | * any */ | |
714 | if_flags_update(ifp, ifm->ifm_flags); | |
715 | ||
716 | #ifndef RTM_IFANNOUNCE | |
717 | if (!if_is_up(ifp)) { | |
718 | /* No RTM_IFANNOUNCE on this platform, so we can never | |
719 | * distinguish between ~IFF_UP and delete. We must | |
720 | * presume | |
721 | * it has been deleted. | |
722 | * Eg, Solaris will not notify us of unplumb. | |
723 | * | |
724 | * XXX: Fixme - this should be runtime detected | |
725 | * So that a binary compiled on a system with IFANNOUNCE | |
726 | * will still behave correctly if run on a platform | |
727 | * without | |
728 | */ | |
729 | if_delete_update(&ifp); | |
730 | } | |
731 | #endif /* RTM_IFANNOUNCE */ | |
732 | if (ifp && if_is_up(ifp)) { | |
733 | #if defined(__bsdi__) | |
734 | if_kvm_get_mtu(ifp); | |
735 | #else | |
736 | if_get_mtu(ifp); | |
737 | #endif /* __bsdi__ */ | |
738 | if_get_metric(ifp); | |
739 | } | |
740 | } | |
741 | ||
742 | if (ifp) { | |
743 | #ifdef HAVE_NET_RT_IFLIST | |
744 | ifp->stats = ifm->ifm_data; | |
745 | #endif /* HAVE_NET_RT_IFLIST */ | |
746 | ifp->speed = ifm->ifm_data.ifi_baudrate / 1000000; | |
747 | ||
748 | if (IS_ZEBRA_DEBUG_KERNEL) | |
749 | zlog_debug("%s: interface %s index %d", __func__, | |
750 | ifp->name, ifp->ifindex); | |
751 | } | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
756 | /* Address read from struct ifa_msghdr. */ | |
757 | static void ifam_read_mesg(struct ifa_msghdr *ifm, union sockunion *addr, | |
758 | union sockunion *mask, union sockunion *brd, | |
759 | char *ifname, short *ifnlen) | |
760 | { | |
761 | caddr_t pnt, end; | |
762 | union sockunion dst; | |
763 | union sockunion gateway; | |
764 | int maskbit; | |
765 | char fbuf[64]; | |
766 | ||
767 | pnt = (caddr_t)(ifm + 1); | |
768 | end = ((caddr_t)ifm) + ifm->ifam_msglen; | |
769 | ||
770 | /* Be sure structure is cleared */ | |
771 | memset(mask, 0, sizeof(union sockunion)); | |
772 | memset(addr, 0, sizeof(union sockunion)); | |
773 | memset(brd, 0, sizeof(union sockunion)); | |
774 | memset(&dst, 0, sizeof(union sockunion)); | |
775 | memset(&gateway, 0, sizeof(union sockunion)); | |
776 | ||
777 | /* We fetch each socket variable into sockunion. */ | |
778 | for (maskbit = 1; maskbit; maskbit <<= 1) { | |
779 | if ((maskbit & ifm->ifam_addrs) == 0) | |
780 | continue; | |
781 | ||
782 | switch (maskbit) { | |
783 | case RTA_DST: | |
784 | pnt += rta_get(pnt, &dst, sizeof(dst)); | |
785 | break; | |
786 | case RTA_GATEWAY: | |
787 | pnt += rta_get(pnt, &gateway, sizeof(gateway)); | |
788 | break; | |
789 | case RTA_NETMASK: | |
790 | pnt += rta_getattr(pnt, mask, sizeof(*mask)); | |
791 | break; | |
792 | case RTA_IFP: | |
793 | pnt += rta_getsdlname(pnt, ifname, ifnlen); | |
794 | break; | |
795 | case RTA_IFA: | |
796 | pnt += rta_get(pnt, addr, sizeof(*addr)); | |
797 | break; | |
798 | case RTA_BRD: | |
799 | pnt += rta_get(pnt, brd, sizeof(*brd)); | |
800 | break; | |
801 | ||
802 | default: | |
803 | pnt += rta_get(pnt, NULL, 0); | |
804 | break; | |
805 | } | |
806 | ||
807 | if (pnt > end) { | |
808 | zlog_warn("%s: overflow detected (pnt:%p end:%p)", | |
809 | __func__, pnt, end); | |
810 | break; | |
811 | } | |
812 | } | |
813 | ||
814 | if (IS_ZEBRA_DEBUG_KERNEL) { | |
815 | switch (sockunion_family(addr)) { | |
816 | case AF_INET: | |
817 | case AF_INET6: { | |
818 | int masklen = | |
819 | (sockunion_family(addr) == AF_INET) | |
820 | ? ip_masklen(mask->sin.sin_addr) | |
821 | : ip6_masklen(mask->sin6.sin6_addr); | |
822 | zlog_debug( | |
823 | "%s: ifindex %d, ifname %s, ifam_addrs {%s}, ifam_flags 0x%x, addr %pSU/%d broad %pSU dst %pSU gateway %pSU", | |
824 | __func__, ifm->ifam_index, | |
825 | (ifnlen ? ifname : "(nil)"), | |
826 | rtatostr(ifm->ifam_addrs, fbuf, sizeof(fbuf)), | |
827 | ifm->ifam_flags, addr, masklen, brd, &dst, | |
828 | &gateway); | |
829 | } break; | |
830 | default: | |
831 | zlog_debug("%s: ifindex %d, ifname %s, ifam_addrs {%s}", | |
832 | __func__, ifm->ifam_index, | |
833 | (ifnlen ? ifname : "(nil)"), | |
834 | rtatostr(ifm->ifam_addrs, fbuf, | |
835 | sizeof(fbuf))); | |
836 | break; | |
837 | } | |
838 | } | |
839 | ||
840 | /* Assert read up end point matches to end point */ | |
841 | pnt = (caddr_t)ROUNDUP((size_t)pnt); | |
842 | if (pnt != (caddr_t)ROUNDUP((size_t)end)) | |
843 | zlog_debug("ifam_read() doesn't read all socket data"); | |
844 | } | |
845 | ||
846 | /* Interface's address information get. */ | |
847 | int ifam_read(struct ifa_msghdr *ifam) | |
848 | { | |
849 | struct interface *ifp = NULL; | |
850 | union sockunion addr, mask, brd; | |
851 | bool dest_same = false; | |
852 | char ifname[INTERFACE_NAMSIZ]; | |
853 | short ifnlen = 0; | |
854 | bool isalias = false; | |
855 | uint32_t flags = 0; | |
856 | ||
857 | ifname[0] = ifname[INTERFACE_NAMSIZ - 1] = '\0'; | |
858 | ||
859 | /* Allocate and read address information. */ | |
860 | ifam_read_mesg(ifam, &addr, &mask, &brd, ifname, &ifnlen); | |
861 | ||
862 | if ((ifp = if_lookup_by_index(ifam->ifam_index, VRF_DEFAULT)) == NULL) { | |
863 | flog_warn(EC_ZEBRA_UNKNOWN_INTERFACE, | |
864 | "%s: no interface for ifname %s, index %d", __func__, | |
865 | ifname, ifam->ifam_index); | |
866 | return -1; | |
867 | } | |
868 | ||
869 | if (ifnlen && strncmp(ifp->name, ifname, INTERFACE_NAMSIZ)) | |
870 | isalias = true; | |
871 | ||
872 | /* | |
873 | * Mark the alias prefixes as secondary | |
874 | */ | |
875 | if (isalias) | |
876 | SET_FLAG(flags, ZEBRA_IFA_SECONDARY); | |
877 | ||
878 | /* N.B. The info in ifa_msghdr does not tell us whether the RTA_BRD | |
879 | field contains a broadcast address or a peer address, so we are | |
880 | forced to | |
881 | rely upon the interface type. */ | |
882 | if (if_is_pointopoint(ifp)) | |
883 | SET_FLAG(flags, ZEBRA_IFA_PEER); | |
884 | else { | |
885 | if (memcmp(&addr, &brd, sizeof(addr)) == 0) | |
886 | dest_same = true; | |
887 | } | |
888 | ||
889 | #if 0 | |
890 | /* it might seem cute to grab the interface metric here, however | |
891 | * we're processing an address update message, and so some systems | |
892 | * (e.g. FBSD) dont bother to fill in ifam_metric. Disabled, but left | |
893 | * in deliberately, as comment. | |
894 | */ | |
895 | ifp->metric = ifam->ifam_metric; | |
896 | #endif | |
897 | ||
898 | /* Add connected address. */ | |
899 | switch (sockunion_family(&addr)) { | |
900 | case AF_INET: | |
901 | if (ifam->ifam_type == RTM_NEWADDR) | |
902 | connected_add_ipv4(ifp, flags, &addr.sin.sin_addr, | |
903 | ip_masklen(mask.sin.sin_addr), | |
904 | dest_same ? NULL : &brd.sin.sin_addr, | |
905 | (isalias ? ifname : NULL), | |
906 | METRIC_MAX); | |
907 | else | |
908 | connected_delete_ipv4(ifp, flags, &addr.sin.sin_addr, | |
909 | ip_masklen(mask.sin.sin_addr), | |
910 | dest_same ? NULL | |
911 | : &brd.sin.sin_addr); | |
912 | break; | |
913 | case AF_INET6: | |
914 | /* Unset interface index from link-local address when IPv6 stack | |
915 | is KAME. */ | |
916 | if (IN6_IS_ADDR_LINKLOCAL(&addr.sin6.sin6_addr)) { | |
917 | SET_IN6_LINKLOCAL_IFINDEX(addr.sin6.sin6_addr, 0); | |
918 | } | |
919 | ||
920 | if (ifam->ifam_type == RTM_NEWADDR) | |
921 | connected_add_ipv6(ifp, flags, &addr.sin6.sin6_addr, | |
922 | NULL, | |
923 | ip6_masklen(mask.sin6.sin6_addr), | |
924 | (isalias ? ifname : NULL), | |
925 | METRIC_MAX); | |
926 | else | |
927 | connected_delete_ipv6(ifp, &addr.sin6.sin6_addr, NULL, | |
928 | ip6_masklen(mask.sin6.sin6_addr)); | |
929 | break; | |
930 | default: | |
931 | /* Unsupported family silently ignore... */ | |
932 | break; | |
933 | } | |
934 | ||
935 | /* Check interface flag for implicit up of the interface. */ | |
936 | if_refresh(ifp); | |
937 | ||
938 | return 0; | |
939 | } | |
940 | ||
941 | /* Interface function for reading kernel routing table information. */ | |
942 | static int rtm_read_mesg(struct rt_msghdr *rtm, union sockunion *dest, | |
943 | union sockunion *mask, union sockunion *gate, | |
944 | char *ifname, short *ifnlen) | |
945 | { | |
946 | caddr_t pnt, end; | |
947 | int maskbit; | |
948 | ||
949 | /* Pnt points out socket data start point. */ | |
950 | pnt = (caddr_t)(rtm + 1); | |
951 | end = ((caddr_t)rtm) + rtm->rtm_msglen; | |
952 | ||
953 | /* rt_msghdr version check. */ | |
954 | if (rtm->rtm_version != RTM_VERSION) | |
955 | flog_warn(EC_ZEBRA_RTM_VERSION_MISMATCH, | |
956 | "Routing message version different %d should be %d.This may cause problem", | |
957 | rtm->rtm_version, RTM_VERSION); | |
958 | ||
959 | /* Be sure structure is cleared */ | |
960 | memset(dest, 0, sizeof(union sockunion)); | |
961 | memset(gate, 0, sizeof(union sockunion)); | |
962 | memset(mask, 0, sizeof(union sockunion)); | |
963 | ||
964 | /* We fetch each socket variable into sockunion. */ | |
965 | /* We fetch each socket variable into sockunion. */ | |
966 | for (maskbit = 1; maskbit; maskbit <<= 1) { | |
967 | if ((maskbit & rtm->rtm_addrs) == 0) | |
968 | continue; | |
969 | ||
970 | switch (maskbit) { | |
971 | case RTA_DST: | |
972 | pnt += rta_get(pnt, dest, sizeof(*dest)); | |
973 | break; | |
974 | case RTA_GATEWAY: | |
975 | pnt += rta_get(pnt, gate, sizeof(*gate)); | |
976 | break; | |
977 | case RTA_NETMASK: | |
978 | pnt += rta_getattr(pnt, mask, sizeof(*mask)); | |
979 | break; | |
980 | case RTA_IFP: | |
981 | pnt += rta_getsdlname(pnt, ifname, ifnlen); | |
982 | break; | |
983 | ||
984 | default: | |
985 | pnt += rta_get(pnt, NULL, 0); | |
986 | break; | |
987 | } | |
988 | ||
989 | if (pnt > end) { | |
990 | zlog_warn("%s: overflow detected (pnt:%p end:%p)", | |
991 | __func__, pnt, end); | |
992 | break; | |
993 | } | |
994 | } | |
995 | ||
996 | /* If there is netmask information set it's family same as | |
997 | destination family*/ | |
998 | if (rtm->rtm_addrs & RTA_NETMASK) | |
999 | mask->sa.sa_family = dest->sa.sa_family; | |
1000 | ||
1001 | /* Assert read up to the end of pointer. */ | |
1002 | if (pnt != end) | |
1003 | zlog_debug("rtm_read() doesn't read all socket data."); | |
1004 | ||
1005 | return rtm->rtm_flags; | |
1006 | } | |
1007 | ||
1008 | void rtm_read(struct rt_msghdr *rtm) | |
1009 | { | |
1010 | int flags; | |
1011 | uint32_t zebra_flags; | |
1012 | union sockunion dest, mask, gate; | |
1013 | char ifname[INTERFACE_NAMSIZ + 1]; | |
1014 | short ifnlen = 0; | |
1015 | struct nexthop nh; | |
1016 | struct prefix p; | |
1017 | ifindex_t ifindex = 0; | |
1018 | afi_t afi; | |
1019 | char fbuf[64]; | |
1020 | int32_t proto = ZEBRA_ROUTE_KERNEL; | |
1021 | uint8_t distance = 0; | |
1022 | ||
1023 | zebra_flags = 0; | |
1024 | ||
1025 | /* Read destination and netmask and gateway from rtm message | |
1026 | structure. */ | |
1027 | flags = rtm_read_mesg(rtm, &dest, &mask, &gate, ifname, &ifnlen); | |
1028 | if (!(flags & RTF_DONE)) | |
1029 | return; | |
1030 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1031 | zlog_debug("%s: got rtm of type %d (%s) addrs {%s}", __func__, | |
1032 | rtm->rtm_type, | |
1033 | lookup_msg(rtm_type_str, rtm->rtm_type, NULL), | |
1034 | rtatostr(rtm->rtm_addrs, fbuf, sizeof(fbuf))); | |
1035 | ||
1036 | #ifdef RTF_CLONED /*bsdi, netbsd 1.6*/ | |
1037 | if (flags & RTF_CLONED) | |
1038 | return; | |
1039 | #endif | |
1040 | #ifdef RTF_WASCLONED /*freebsd*/ | |
1041 | if (flags & RTF_WASCLONED) | |
1042 | return; | |
1043 | #endif | |
1044 | ||
1045 | if ((rtm->rtm_type == RTM_ADD || rtm->rtm_type == RTM_CHANGE) | |
1046 | && !(flags & RTF_UP)) | |
1047 | return; | |
1048 | ||
1049 | /* This is connected route. */ | |
1050 | if (!(flags & RTF_GATEWAY)) | |
1051 | return; | |
1052 | ||
1053 | if (flags & RTF_PROTO1) { | |
1054 | SET_FLAG(zebra_flags, ZEBRA_FLAG_SELFROUTE); | |
1055 | proto = ZEBRA_ROUTE_STATIC; | |
1056 | distance = 255; | |
1057 | } | |
1058 | ||
1059 | memset(&nh, 0, sizeof(nh)); | |
1060 | ||
1061 | nh.vrf_id = VRF_DEFAULT; | |
1062 | /* This is a reject or blackhole route */ | |
1063 | if (flags & RTF_REJECT) { | |
1064 | nh.type = NEXTHOP_TYPE_BLACKHOLE; | |
1065 | nh.bh_type = BLACKHOLE_REJECT; | |
1066 | } else if (flags & RTF_BLACKHOLE) { | |
1067 | nh.type = NEXTHOP_TYPE_BLACKHOLE; | |
1068 | nh.bh_type = BLACKHOLE_NULL; | |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | * Ignore our own messages. | |
1073 | */ | |
1074 | if (rtm->rtm_type != RTM_GET && rtm->rtm_pid == pid) | |
1075 | return; | |
1076 | ||
1077 | if (dest.sa.sa_family == AF_INET) { | |
1078 | afi = AFI_IP; | |
1079 | p.family = AF_INET; | |
1080 | p.u.prefix4 = dest.sin.sin_addr; | |
1081 | if (flags & RTF_HOST) | |
1082 | p.prefixlen = IPV4_MAX_BITLEN; | |
1083 | else | |
1084 | p.prefixlen = ip_masklen(mask.sin.sin_addr); | |
1085 | ||
1086 | if (!nh.type) { | |
1087 | nh.type = NEXTHOP_TYPE_IPV4; | |
1088 | nh.gate.ipv4 = gate.sin.sin_addr; | |
1089 | } | |
1090 | } else if (dest.sa.sa_family == AF_INET6) { | |
1091 | afi = AFI_IP6; | |
1092 | p.family = AF_INET6; | |
1093 | p.u.prefix6 = dest.sin6.sin6_addr; | |
1094 | if (flags & RTF_HOST) | |
1095 | p.prefixlen = IPV6_MAX_BITLEN; | |
1096 | else | |
1097 | p.prefixlen = ip6_masklen(mask.sin6.sin6_addr); | |
1098 | ||
1099 | #ifdef KAME | |
1100 | if (IN6_IS_ADDR_LINKLOCAL(&gate.sin6.sin6_addr)) { | |
1101 | ifindex = IN6_LINKLOCAL_IFINDEX(gate.sin6.sin6_addr); | |
1102 | SET_IN6_LINKLOCAL_IFINDEX(gate.sin6.sin6_addr, 0); | |
1103 | } | |
1104 | #endif /* KAME */ | |
1105 | ||
1106 | if (!nh.type) { | |
1107 | nh.type = ifindex ? NEXTHOP_TYPE_IPV6_IFINDEX | |
1108 | : NEXTHOP_TYPE_IPV6; | |
1109 | nh.gate.ipv6 = gate.sin6.sin6_addr; | |
1110 | nh.ifindex = ifindex; | |
1111 | } | |
1112 | } else | |
1113 | return; | |
1114 | ||
1115 | if (rtm->rtm_type == RTM_GET || rtm->rtm_type == RTM_ADD | |
1116 | || rtm->rtm_type == RTM_CHANGE) | |
1117 | rib_add(afi, SAFI_UNICAST, VRF_DEFAULT, proto, 0, zebra_flags, | |
1118 | &p, NULL, &nh, 0, RT_TABLE_MAIN, 0, 0, distance, 0, | |
1119 | false); | |
1120 | else | |
1121 | rib_delete(afi, SAFI_UNICAST, VRF_DEFAULT, proto, 0, | |
1122 | zebra_flags, &p, NULL, &nh, 0, RT_TABLE_MAIN, 0, | |
1123 | distance, true); | |
1124 | } | |
1125 | ||
1126 | /* Interface function for the kernel routing table updates. Support | |
1127 | * for RTM_CHANGE will be needed. | |
1128 | * Exported only for rt_socket.c | |
1129 | */ | |
1130 | int rtm_write(int message, union sockunion *dest, union sockunion *mask, | |
1131 | union sockunion *gate, union sockunion *mpls, unsigned int index, | |
1132 | enum blackhole_type bh_type, int metric) | |
1133 | { | |
1134 | int ret; | |
1135 | caddr_t pnt; | |
1136 | struct interface *ifp; | |
1137 | ||
1138 | /* Sequencial number of routing message. */ | |
1139 | static int msg_seq = 0; | |
1140 | ||
1141 | /* Struct of rt_msghdr and buffer for storing socket's data. */ | |
1142 | struct { | |
1143 | struct rt_msghdr rtm; | |
1144 | char buf[512]; | |
1145 | } msg; | |
1146 | ||
1147 | if (dplane_routing_sock < 0) | |
1148 | return ZEBRA_ERR_EPERM; | |
1149 | ||
1150 | /* Clear and set rt_msghdr values */ | |
1151 | memset(&msg, 0, sizeof(msg)); | |
1152 | msg.rtm.rtm_version = RTM_VERSION; | |
1153 | msg.rtm.rtm_type = message; | |
1154 | msg.rtm.rtm_seq = msg_seq++; | |
1155 | msg.rtm.rtm_addrs = RTA_DST; | |
1156 | msg.rtm.rtm_addrs |= RTA_GATEWAY; | |
1157 | msg.rtm.rtm_flags = RTF_UP; | |
1158 | #ifdef __OpenBSD__ | |
1159 | msg.rtm.rtm_flags |= RTF_MPATH; | |
1160 | msg.rtm.rtm_fmask = RTF_MPLS; | |
1161 | #endif | |
1162 | msg.rtm.rtm_index = index; | |
1163 | ||
1164 | if (metric != 0) { | |
1165 | msg.rtm.rtm_rmx.rmx_hopcount = metric; | |
1166 | msg.rtm.rtm_inits |= RTV_HOPCOUNT; | |
1167 | } | |
1168 | ||
1169 | ifp = if_lookup_by_index(index, VRF_DEFAULT); | |
1170 | ||
1171 | if (gate && (message == RTM_ADD || message == RTM_CHANGE)) | |
1172 | msg.rtm.rtm_flags |= RTF_GATEWAY; | |
1173 | ||
1174 | /* When RTF_CLONING is unavailable on BSD, should we set some | |
1175 | * other flag instead? | |
1176 | */ | |
1177 | #ifdef RTF_CLONING | |
1178 | if (!gate && (message == RTM_ADD || message == RTM_CHANGE) && ifp | |
1179 | && (ifp->flags & IFF_POINTOPOINT) == 0) | |
1180 | msg.rtm.rtm_flags |= RTF_CLONING; | |
1181 | #endif /* RTF_CLONING */ | |
1182 | ||
1183 | /* If no protocol specific gateway is specified, use link | |
1184 | address for gateway. */ | |
1185 | if (!gate) { | |
1186 | if (!ifp) { | |
1187 | char dest_buf[INET_ADDRSTRLEN] = "NULL", | |
1188 | mask_buf[INET_ADDRSTRLEN] = "255.255.255.255"; | |
1189 | if (dest) | |
1190 | inet_ntop(AF_INET, &dest->sin.sin_addr, | |
1191 | dest_buf, INET_ADDRSTRLEN); | |
1192 | if (mask) | |
1193 | inet_ntop(AF_INET, &mask->sin.sin_addr, | |
1194 | mask_buf, INET_ADDRSTRLEN); | |
1195 | flog_warn( | |
1196 | EC_ZEBRA_RTM_NO_GATEWAY, | |
1197 | "%s: %s/%s: gate == NULL and no gateway found for ifindex %d", | |
1198 | __func__, dest_buf, mask_buf, index); | |
1199 | return -1; | |
1200 | } | |
1201 | gate = (union sockunion *)&((struct zebra_if *)ifp->info)->sdl; | |
1202 | } | |
1203 | ||
1204 | if (mask) | |
1205 | msg.rtm.rtm_addrs |= RTA_NETMASK; | |
1206 | else if (message == RTM_ADD || message == RTM_CHANGE) | |
1207 | msg.rtm.rtm_flags |= RTF_HOST; | |
1208 | ||
1209 | #ifdef __OpenBSD__ | |
1210 | if (mpls) { | |
1211 | msg.rtm.rtm_addrs |= RTA_SRC; | |
1212 | msg.rtm.rtm_flags |= RTF_MPLS; | |
1213 | ||
1214 | if (mpls->smpls.smpls_label | |
1215 | != htonl(MPLS_LABEL_IMPLICIT_NULL << MPLS_LABEL_OFFSET)) | |
1216 | msg.rtm.rtm_mpls = MPLS_OP_PUSH; | |
1217 | } | |
1218 | #endif | |
1219 | ||
1220 | /* Tagging route with flags */ | |
1221 | msg.rtm.rtm_flags |= (RTF_PROTO1); | |
1222 | ||
1223 | switch (bh_type) { | |
1224 | case BLACKHOLE_UNSPEC: | |
1225 | break; | |
1226 | case BLACKHOLE_REJECT: | |
1227 | msg.rtm.rtm_flags |= RTF_REJECT; | |
1228 | break; | |
1229 | default: | |
1230 | msg.rtm.rtm_flags |= RTF_BLACKHOLE; | |
1231 | break; | |
1232 | } | |
1233 | ||
1234 | ||
1235 | #define SOCKADDRSET(X, R) \ | |
1236 | if (msg.rtm.rtm_addrs & (R)) { \ | |
1237 | int len = SAROUNDUP(X); \ | |
1238 | memcpy(pnt, (caddr_t)(X), len); \ | |
1239 | pnt += len; \ | |
1240 | } | |
1241 | ||
1242 | pnt = (caddr_t)msg.buf; | |
1243 | ||
1244 | /* Write each socket data into rtm message buffer */ | |
1245 | SOCKADDRSET(dest, RTA_DST); | |
1246 | SOCKADDRSET(gate, RTA_GATEWAY); | |
1247 | SOCKADDRSET(mask, RTA_NETMASK); | |
1248 | #ifdef __OpenBSD__ | |
1249 | SOCKADDRSET(mpls, RTA_SRC); | |
1250 | #endif | |
1251 | ||
1252 | msg.rtm.rtm_msglen = pnt - (caddr_t)&msg; | |
1253 | ||
1254 | ret = write(dplane_routing_sock, &msg, msg.rtm.rtm_msglen); | |
1255 | ||
1256 | if (ret != msg.rtm.rtm_msglen) { | |
1257 | if (errno == EEXIST) | |
1258 | return ZEBRA_ERR_RTEXIST; | |
1259 | if (errno == ENETUNREACH) | |
1260 | return ZEBRA_ERR_RTUNREACH; | |
1261 | if (errno == ESRCH) | |
1262 | return ZEBRA_ERR_RTNOEXIST; | |
1263 | ||
1264 | flog_err_sys(EC_LIB_SOCKET, "%s: write : %s (%d)", __func__, | |
1265 | safe_strerror(errno), errno); | |
1266 | return ZEBRA_ERR_KERNEL; | |
1267 | } | |
1268 | return ZEBRA_ERR_NOERROR; | |
1269 | } | |
1270 | ||
1271 | ||
1272 | #include "thread.h" | |
1273 | #include "zebra/zserv.h" | |
1274 | ||
1275 | /* For debug purpose. */ | |
1276 | static void rtmsg_debug(struct rt_msghdr *rtm) | |
1277 | { | |
1278 | char fbuf[64]; | |
1279 | ||
1280 | zlog_debug("Kernel: Len: %d Type: %s", rtm->rtm_msglen, | |
1281 | lookup_msg(rtm_type_str, rtm->rtm_type, NULL)); | |
1282 | rtm_flag_dump(rtm->rtm_flags); | |
1283 | zlog_debug("Kernel: message seq %d", rtm->rtm_seq); | |
1284 | zlog_debug("Kernel: pid %lld, rtm_addrs {%s}", (long long)rtm->rtm_pid, | |
1285 | rtatostr(rtm->rtm_addrs, fbuf, sizeof(fbuf))); | |
1286 | } | |
1287 | ||
1288 | /* This is pretty gross, better suggestions welcome -- mhandler */ | |
1289 | #ifndef RTAX_MAX | |
1290 | #ifdef RTA_NUMBITS | |
1291 | #define RTAX_MAX RTA_NUMBITS | |
1292 | #else | |
1293 | #define RTAX_MAX 8 | |
1294 | #endif /* RTA_NUMBITS */ | |
1295 | #endif /* RTAX_MAX */ | |
1296 | ||
1297 | /* Kernel routing table and interface updates via routing socket. */ | |
1298 | static void kernel_read(struct thread *thread) | |
1299 | { | |
1300 | int sock; | |
1301 | int nbytes; | |
1302 | struct rt_msghdr *rtm; | |
1303 | ||
1304 | /* | |
1305 | * This must be big enough for any message the kernel might send. | |
1306 | * Rather than determining how many sockaddrs of what size might be | |
1307 | * in each particular message, just use RTAX_MAX of sockaddr_storage | |
1308 | * for each. Note that the sockaddrs must be after each message | |
1309 | * definition, or rather after whichever happens to be the largest, | |
1310 | * since the buffer needs to be big enough for a message and the | |
1311 | * sockaddrs together. | |
1312 | */ | |
1313 | union { | |
1314 | /* Routing information. */ | |
1315 | struct { | |
1316 | struct rt_msghdr rtm; | |
1317 | struct sockaddr_storage addr[RTAX_MAX]; | |
1318 | } r; | |
1319 | ||
1320 | /* Interface information. */ | |
1321 | struct { | |
1322 | struct if_msghdr ifm; | |
1323 | struct sockaddr_storage addr[RTAX_MAX]; | |
1324 | } im; | |
1325 | ||
1326 | /* Interface address information. */ | |
1327 | struct { | |
1328 | struct ifa_msghdr ifa; | |
1329 | struct sockaddr_storage addr[RTAX_MAX]; | |
1330 | } ia; | |
1331 | ||
1332 | #ifdef RTM_IFANNOUNCE | |
1333 | /* Interface arrival/departure */ | |
1334 | struct { | |
1335 | struct if_announcemsghdr ifan; | |
1336 | struct sockaddr_storage addr[RTAX_MAX]; | |
1337 | } ian; | |
1338 | #endif /* RTM_IFANNOUNCE */ | |
1339 | ||
1340 | } buf; | |
1341 | ||
1342 | /* Fetch routing socket. */ | |
1343 | sock = THREAD_FD(thread); | |
1344 | ||
1345 | nbytes = read(sock, &buf, sizeof(buf)); | |
1346 | ||
1347 | if (nbytes < 0) { | |
1348 | if (errno == ENOBUFS) { | |
1349 | #ifdef __FreeBSD__ | |
1350 | /* | |
1351 | * ENOBUFS indicates a temporary resource | |
1352 | * shortage and is not harmful for consistency of | |
1353 | * reading the routing socket. Ignore it. | |
1354 | */ | |
1355 | thread_add_read(zrouter.master, kernel_read, NULL, sock, | |
1356 | NULL); | |
1357 | return; | |
1358 | #else | |
1359 | flog_err(EC_ZEBRA_RECVMSG_OVERRUN, | |
1360 | "routing socket overrun: %s", | |
1361 | safe_strerror(errno)); | |
1362 | /* | |
1363 | * In this case we are screwed. | |
1364 | * There is no good way to | |
1365 | * recover zebra at this point. | |
1366 | */ | |
1367 | exit(-1); | |
1368 | #endif | |
1369 | } | |
1370 | if (errno != EAGAIN && errno != EWOULDBLOCK) | |
1371 | flog_err_sys(EC_LIB_SOCKET, "routing socket error: %s", | |
1372 | safe_strerror(errno)); | |
1373 | return; | |
1374 | } | |
1375 | ||
1376 | if (nbytes == 0) | |
1377 | return; | |
1378 | ||
1379 | thread_add_read(zrouter.master, kernel_read, NULL, sock, NULL); | |
1380 | ||
1381 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1382 | rtmsg_debug(&buf.r.rtm); | |
1383 | ||
1384 | rtm = &buf.r.rtm; | |
1385 | ||
1386 | /* | |
1387 | * Ensure that we didn't drop any data, so that processing routines | |
1388 | * can assume they have the whole message. | |
1389 | */ | |
1390 | if (rtm->rtm_msglen != nbytes) { | |
1391 | zlog_debug( | |
1392 | "kernel_read: rtm->rtm_msglen %d, nbytes %d, type %d", | |
1393 | rtm->rtm_msglen, nbytes, rtm->rtm_type); | |
1394 | return; | |
1395 | } | |
1396 | ||
1397 | switch (rtm->rtm_type) { | |
1398 | case RTM_ADD: | |
1399 | case RTM_DELETE: | |
1400 | case RTM_CHANGE: | |
1401 | rtm_read(rtm); | |
1402 | break; | |
1403 | case RTM_IFINFO: | |
1404 | ifm_read(&buf.im.ifm); | |
1405 | break; | |
1406 | case RTM_NEWADDR: | |
1407 | case RTM_DELADDR: | |
1408 | ifam_read(&buf.ia.ifa); | |
1409 | break; | |
1410 | #ifdef RTM_IFANNOUNCE | |
1411 | case RTM_IFANNOUNCE: | |
1412 | ifan_read(&buf.ian.ifan); | |
1413 | break; | |
1414 | #endif /* RTM_IFANNOUNCE */ | |
1415 | default: | |
1416 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1417 | zlog_debug( | |
1418 | "Unprocessed RTM_type: %s(%d)", | |
1419 | lookup_msg(rtm_type_str, rtm->rtm_type, NULL), | |
1420 | rtm->rtm_type); | |
1421 | break; | |
1422 | } | |
1423 | } | |
1424 | ||
1425 | /* Make routing socket. */ | |
1426 | static void routing_socket(struct zebra_ns *zns) | |
1427 | { | |
1428 | uint32_t default_rcvbuf; | |
1429 | socklen_t optlen; | |
1430 | ||
1431 | frr_with_privs(&zserv_privs) { | |
1432 | routing_sock = ns_socket(AF_ROUTE, SOCK_RAW, 0, zns->ns_id); | |
1433 | ||
1434 | dplane_routing_sock = | |
1435 | ns_socket(AF_ROUTE, SOCK_RAW, 0, zns->ns_id); | |
1436 | } | |
1437 | ||
1438 | if (routing_sock < 0) { | |
1439 | flog_err_sys(EC_LIB_SOCKET, "Can't init kernel routing socket"); | |
1440 | return; | |
1441 | } | |
1442 | ||
1443 | if (dplane_routing_sock < 0) { | |
1444 | flog_err_sys(EC_LIB_SOCKET, | |
1445 | "Can't init kernel dataplane routing socket"); | |
1446 | return; | |
1447 | } | |
1448 | ||
1449 | #ifdef SO_RERROR | |
1450 | /* Allow reporting of route(4) buffer overflow errors */ | |
1451 | int n = 1; | |
1452 | ||
1453 | if (setsockopt(routing_sock, SOL_SOCKET, SO_RERROR, &n, sizeof(n)) < 0) | |
1454 | flog_err_sys(EC_LIB_SOCKET, | |
1455 | "Can't set SO_RERROR on routing socket"); | |
1456 | #endif | |
1457 | ||
1458 | /* XXX: Socket should be NONBLOCK, however as we currently | |
1459 | * discard failed writes, this will lead to inconsistencies. | |
1460 | * For now, socket must be blocking. | |
1461 | */ | |
1462 | /*if (fcntl (routing_sock, F_SETFL, O_NONBLOCK) < 0) | |
1463 | zlog_warn ("Can't set O_NONBLOCK to routing socket");*/ | |
1464 | ||
1465 | /* | |
1466 | * Attempt to set a more useful receive buffer size | |
1467 | */ | |
1468 | optlen = sizeof(default_rcvbuf); | |
1469 | if (getsockopt(routing_sock, SOL_SOCKET, SO_RCVBUF, &default_rcvbuf, | |
1470 | &optlen) == -1) | |
1471 | flog_err_sys(EC_LIB_SOCKET, | |
1472 | "routing_sock sockopt SOL_SOCKET SO_RCVBUF"); | |
1473 | else { | |
1474 | for (; rcvbufsize > default_rcvbuf && | |
1475 | setsockopt(routing_sock, SOL_SOCKET, SO_RCVBUF, | |
1476 | &rcvbufsize, sizeof(rcvbufsize)) == -1 && | |
1477 | errno == ENOBUFS; | |
1478 | rcvbufsize /= 2) | |
1479 | ; | |
1480 | } | |
1481 | ||
1482 | /* kernel_read needs rewrite. */ | |
1483 | thread_add_read(zrouter.master, kernel_read, NULL, routing_sock, NULL); | |
1484 | } | |
1485 | ||
1486 | /* Exported interface function. This function simply calls | |
1487 | routing_socket (). */ | |
1488 | void kernel_init(struct zebra_ns *zns) | |
1489 | { | |
1490 | routing_socket(zns); | |
1491 | } | |
1492 | ||
1493 | void kernel_terminate(struct zebra_ns *zns, bool complete) | |
1494 | { | |
1495 | return; | |
1496 | } | |
1497 | ||
1498 | /* | |
1499 | * Global init for platform-/OS-specific things | |
1500 | */ | |
1501 | void kernel_router_init(void) | |
1502 | { | |
1503 | } | |
1504 | ||
1505 | /* | |
1506 | * Global deinit for platform-/OS-specific things | |
1507 | */ | |
1508 | void kernel_router_terminate(void) | |
1509 | { | |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * Called by the dplane pthread to read incoming OS messages and dispatch them. | |
1514 | */ | |
1515 | int kernel_dplane_read(struct zebra_dplane_info *info) | |
1516 | { | |
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | void kernel_update_multi(struct dplane_ctx_q *ctx_list) | |
1521 | { | |
1522 | struct zebra_dplane_ctx *ctx; | |
1523 | struct dplane_ctx_q handled_list; | |
1524 | enum zebra_dplane_result res = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
1525 | ||
1526 | TAILQ_INIT(&handled_list); | |
1527 | ||
1528 | while (true) { | |
1529 | ctx = dplane_ctx_dequeue(ctx_list); | |
1530 | if (ctx == NULL) | |
1531 | break; | |
1532 | ||
1533 | /* | |
1534 | * A previous provider plugin may have asked to skip the | |
1535 | * kernel update. | |
1536 | */ | |
1537 | if (dplane_ctx_is_skip_kernel(ctx)) { | |
1538 | res = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
1539 | goto skip_one; | |
1540 | } | |
1541 | ||
1542 | switch (dplane_ctx_get_op(ctx)) { | |
1543 | ||
1544 | case DPLANE_OP_ROUTE_INSTALL: | |
1545 | case DPLANE_OP_ROUTE_UPDATE: | |
1546 | case DPLANE_OP_ROUTE_DELETE: | |
1547 | res = kernel_route_update(ctx); | |
1548 | break; | |
1549 | ||
1550 | case DPLANE_OP_NH_INSTALL: | |
1551 | case DPLANE_OP_NH_UPDATE: | |
1552 | case DPLANE_OP_NH_DELETE: | |
1553 | res = kernel_nexthop_update(ctx); | |
1554 | break; | |
1555 | ||
1556 | case DPLANE_OP_LSP_INSTALL: | |
1557 | case DPLANE_OP_LSP_UPDATE: | |
1558 | case DPLANE_OP_LSP_DELETE: | |
1559 | res = kernel_lsp_update(ctx); | |
1560 | break; | |
1561 | ||
1562 | case DPLANE_OP_PW_INSTALL: | |
1563 | case DPLANE_OP_PW_UNINSTALL: | |
1564 | res = kernel_pw_update(ctx); | |
1565 | break; | |
1566 | ||
1567 | case DPLANE_OP_ADDR_INSTALL: | |
1568 | case DPLANE_OP_ADDR_UNINSTALL: | |
1569 | res = kernel_address_update_ctx(ctx); | |
1570 | break; | |
1571 | ||
1572 | case DPLANE_OP_MAC_INSTALL: | |
1573 | case DPLANE_OP_MAC_DELETE: | |
1574 | res = kernel_mac_update_ctx(ctx); | |
1575 | break; | |
1576 | ||
1577 | case DPLANE_OP_NEIGH_INSTALL: | |
1578 | case DPLANE_OP_NEIGH_UPDATE: | |
1579 | case DPLANE_OP_NEIGH_DELETE: | |
1580 | case DPLANE_OP_VTEP_ADD: | |
1581 | case DPLANE_OP_VTEP_DELETE: | |
1582 | case DPLANE_OP_NEIGH_DISCOVER: | |
1583 | res = kernel_neigh_update_ctx(ctx); | |
1584 | break; | |
1585 | ||
1586 | case DPLANE_OP_RULE_ADD: | |
1587 | case DPLANE_OP_RULE_DELETE: | |
1588 | case DPLANE_OP_RULE_UPDATE: | |
1589 | res = kernel_pbr_rule_update(ctx); | |
1590 | break; | |
1591 | ||
1592 | case DPLANE_OP_INTF_INSTALL: | |
1593 | case DPLANE_OP_INTF_UPDATE: | |
1594 | case DPLANE_OP_INTF_DELETE: | |
1595 | res = kernel_intf_update(ctx); | |
1596 | break; | |
1597 | ||
1598 | case DPLANE_OP_TC_INSTALL: | |
1599 | case DPLANE_OP_TC_UPDATE: | |
1600 | case DPLANE_OP_TC_DELETE: | |
1601 | res = kernel_tc_update(ctx); | |
1602 | break; | |
1603 | ||
1604 | /* Ignore 'notifications' - no-op */ | |
1605 | case DPLANE_OP_SYS_ROUTE_ADD: | |
1606 | case DPLANE_OP_SYS_ROUTE_DELETE: | |
1607 | case DPLANE_OP_ROUTE_NOTIFY: | |
1608 | case DPLANE_OP_LSP_NOTIFY: | |
1609 | res = ZEBRA_DPLANE_REQUEST_SUCCESS; | |
1610 | break; | |
1611 | ||
1612 | case DPLANE_OP_INTF_NETCONFIG: | |
1613 | res = kernel_intf_netconf_update(ctx); | |
1614 | break; | |
1615 | ||
1616 | case DPLANE_OP_NONE: | |
1617 | case DPLANE_OP_BR_PORT_UPDATE: | |
1618 | case DPLANE_OP_IPTABLE_ADD: | |
1619 | case DPLANE_OP_IPTABLE_DELETE: | |
1620 | case DPLANE_OP_IPSET_ADD: | |
1621 | case DPLANE_OP_IPSET_DELETE: | |
1622 | case DPLANE_OP_IPSET_ENTRY_ADD: | |
1623 | case DPLANE_OP_IPSET_ENTRY_DELETE: | |
1624 | case DPLANE_OP_NEIGH_IP_INSTALL: | |
1625 | case DPLANE_OP_NEIGH_IP_DELETE: | |
1626 | case DPLANE_OP_NEIGH_TABLE_UPDATE: | |
1627 | case DPLANE_OP_GRE_SET: | |
1628 | case DPLANE_OP_INTF_ADDR_ADD: | |
1629 | case DPLANE_OP_INTF_ADDR_DEL: | |
1630 | zlog_err("Unhandled dplane data for %s", | |
1631 | dplane_op2str(dplane_ctx_get_op(ctx))); | |
1632 | res = ZEBRA_DPLANE_REQUEST_FAILURE; | |
1633 | } | |
1634 | ||
1635 | skip_one: | |
1636 | dplane_ctx_set_status(ctx, res); | |
1637 | ||
1638 | dplane_ctx_enqueue_tail(&handled_list, ctx); | |
1639 | } | |
1640 | ||
1641 | TAILQ_INIT(ctx_list); | |
1642 | dplane_ctx_list_append(ctx_list, &handled_list); | |
1643 | } | |
1644 | ||
1645 | #endif /* !HAVE_NETLINK */ |