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Commit | Line | Data |
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b1a1faba | 1 | /* |
c01a9466 | 2 | * BIRD -- BSD Routing Table Syncing |
b1a1faba OF |
3 | * |
4 | * (c) 2004 Ondrej Filip <feela@network.cz> | |
5 | * | |
6 | * Can be freely distributed and used under the terms of the GNU GPL. | |
7 | */ | |
8 | ||
9 | #include <stdio.h> | |
c01a9466 | 10 | #include <stdlib.h> |
b1a1faba OF |
11 | #include <ctype.h> |
12 | #include <fcntl.h> | |
13 | #include <unistd.h> | |
14 | #include <sys/param.h> | |
15 | #include <sys/types.h> | |
16 | #include <sys/socket.h> | |
17 | #include <sys/sysctl.h> | |
18 | #include <sys/ioctl.h> | |
19 | #include <netinet/in.h> | |
20 | #include <net/route.h> | |
21 | #include <net/if.h> | |
22 | #include <net/if_dl.h> | |
23 | ||
24 | #undef LOCAL_DEBUG | |
25 | ||
26 | #include "nest/bird.h" | |
27 | #include "nest/iface.h" | |
28 | #include "nest/route.h" | |
29 | #include "nest/protocol.h" | |
30 | #include "nest/iface.h" | |
31 | #include "lib/timer.h" | |
32 | #include "lib/unix.h" | |
33 | #include "lib/krt.h" | |
34 | #include "lib/string.h" | |
35 | #include "lib/socket.h" | |
36 | ||
396dfa90 | 37 | |
c01a9466 OZ |
38 | /* |
39 | * There are significant differences in multiple tables support between BSD variants. | |
40 | * | |
41 | * OpenBSD has table_id field for routes in route socket protocol, therefore all | |
42 | * tables could be managed by one kernel socket. FreeBSD lacks such field, | |
43 | * therefore multiple sockets (locked to specific table using SO_SETFIB socket | |
44 | * option) must be used. | |
45 | * | |
46 | * Both FreeBSD and OpenBSD uses separate scans for each table. In OpenBSD, | |
47 | * table_id is specified explicitly as sysctl scan argument, while in FreeBSD it | |
48 | * is handled implicitly by changing default table using setfib() syscall. | |
49 | * | |
50 | * KRT_SHARED_SOCKET - use shared kernel socked instead of one for each krt_proto | |
51 | * KRT_USE_SETFIB_SCAN - use setfib() for sysctl() route scan | |
52 | * KRT_USE_SETFIB_SOCK - use SO_SETFIB socket option for kernel sockets | |
53 | * KRT_USE_SYSCTL_7 - use 7-th arg of sysctl() as table id for route scans | |
54 | * KRT_USE_SYSCTL_NET_FIBS - use net.fibs sysctl() for dynamic max number of fibs | |
55 | */ | |
56 | ||
57 | #ifdef __FreeBSD__ | |
58 | #define KRT_MAX_TABLES 256 | |
59 | #define KRT_USE_SETFIB_SCAN | |
60 | #define KRT_USE_SETFIB_SOCK | |
61 | #define KRT_USE_SYSCTL_NET_FIBS | |
396dfa90 OZ |
62 | #endif |
63 | ||
c01a9466 OZ |
64 | #ifdef __OpenBSD__ |
65 | #define KRT_MAX_TABLES (RT_TABLEID_MAX+1) | |
66 | #define KRT_SHARED_SOCKET | |
67 | #define KRT_USE_SYSCTL_7 | |
68 | #endif | |
69 | ||
70 | #ifndef KRT_MAX_TABLES | |
71 | #define KRT_MAX_TABLES 1 | |
72 | #endif | |
73 | ||
c01a9466 OZ |
74 | |
75 | /* Dynamic max number of tables */ | |
76 | ||
77 | int krt_max_tables; | |
78 | ||
79 | #ifdef KRT_USE_SYSCTL_NET_FIBS | |
80 | ||
81 | static int | |
82 | krt_get_max_tables(void) | |
396dfa90 | 83 | { |
c01a9466 OZ |
84 | int fibs; |
85 | size_t fibs_len = sizeof(fibs); | |
86 | ||
87 | if (sysctlbyname("net.fibs", &fibs, &fibs_len, NULL, 0) < 0) | |
88 | { | |
89 | log(L_WARN "KRT: unable to get max number of fib tables: %m"); | |
90 | return 1; | |
91 | } | |
92 | ||
93 | return MIN(fibs, KRT_MAX_TABLES); | |
94 | } | |
95 | ||
96 | #else | |
97 | ||
98 | static int | |
99 | krt_get_max_tables(void) | |
100 | { | |
101 | return KRT_MAX_TABLES; | |
102 | } | |
103 | ||
104 | #endif /* KRT_USE_SYSCTL_NET_FIBS */ | |
105 | ||
106 | ||
107 | /* setfib() syscall for FreeBSD scans */ | |
108 | ||
109 | #ifdef KRT_USE_SETFIB_SCAN | |
110 | ||
111 | /* | |
112 | static int krt_default_fib; | |
113 | ||
114 | static int | |
115 | krt_get_active_fib(void) | |
116 | { | |
117 | int fib; | |
118 | size_t fib_len = sizeof(fib); | |
119 | ||
120 | if (sysctlbyname("net.my_fibnum", &fib, &fib_len, NULL, 0) < 0) | |
121 | { | |
122 | log(L_WARN "KRT: unable to get active fib number: %m"); | |
123 | return 0; | |
124 | } | |
125 | ||
126 | return fib; | |
127 | } | |
128 | */ | |
129 | ||
130 | extern int setfib(int fib); | |
396dfa90 | 131 | |
c01a9466 | 132 | #endif /* KRT_USE_SETFIB_SCAN */ |
396dfa90 | 133 | |
c01a9466 OZ |
134 | |
135 | /* table_id -> krt_proto map */ | |
136 | ||
137 | #ifdef KRT_SHARED_SOCKET | |
8109eb76 | 138 | static struct krt_proto *krt_table_map[KRT_MAX_TABLES][2]; |
c01a9466 | 139 | #endif |
396dfa90 OZ |
140 | |
141 | ||
c01a9466 | 142 | /* Route socket message processing */ |
b1a1faba | 143 | |
b1a1faba OF |
144 | int |
145 | krt_capable(rte *e) | |
146 | { | |
147 | rta *a = e->attrs; | |
148 | ||
b1a1faba OF |
149 | return |
150 | a->cast == RTC_UNICAST && | |
151 | (a->dest == RTD_ROUTER | |
152 | || a->dest == RTD_DEVICE | |
153 | #ifdef RTF_REJECT | |
154 | || a->dest == RTD_UNREACHABLE | |
155 | #endif | |
156 | #ifdef RTF_BLACKHOLE | |
ff2857b0 | 157 | || a->dest == RTD_BLACKHOLE |
b1a1faba OF |
158 | #endif |
159 | ); | |
160 | } | |
161 | ||
c01a9466 OZ |
162 | #ifndef RTAX_MAX |
163 | #define RTAX_MAX 8 | |
164 | #endif | |
165 | ||
166 | struct ks_msg | |
167 | { | |
168 | struct rt_msghdr rtm; | |
169 | struct sockaddr_storage buf[RTAX_MAX]; | |
170 | }; | |
171 | ||
b1a1faba OF |
172 | #define ROUNDUP(a) \ |
173 | ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) | |
174 | ||
175 | #define NEXTADDR(w, u) \ | |
176 | if (msg.rtm.rtm_addrs & (w)) {\ | |
177 | l = ROUNDUP(((struct sockaddr *)&(u))->sa_len);\ | |
178 | memmove(body, &(u), l); body += l;} | |
179 | ||
ff2857b0 OZ |
180 | #define GETADDR(p, F) \ |
181 | bzero(p, sizeof(*p));\ | |
182 | if ((addrs & (F)) && ((struct sockaddr *)body)->sa_len) {\ | |
ae80a2de | 183 | uint l = ROUNDUP(((struct sockaddr *)body)->sa_len);\ |
ff2857b0 OZ |
184 | memcpy(p, body, (l > sizeof(*p) ? sizeof(*p) : l));\ |
185 | body += l;} | |
186 | ||
32f95476 | 187 | static int |
c01a9466 | 188 | krt_send_route(struct krt_proto *p, int cmd, rte *e) |
b1a1faba OF |
189 | { |
190 | net *net = e->net; | |
191 | rta *a = e->attrs; | |
192 | static int msg_seq; | |
193 | struct iface *j, *i = a->iface; | |
194 | int l; | |
195 | struct ks_msg msg; | |
196 | char *body = (char *)msg.buf; | |
197 | sockaddr gate, mask, dst; | |
44aa101c | 198 | ip_addr gw; |
b1a1faba | 199 | |
ff2857b0 | 200 | DBG("krt-sock: send %I/%d via %I\n", net->n.prefix, net->n.pxlen, a->gw); |
b1a1faba | 201 | |
b88a1d40 | 202 | bzero(&msg,sizeof (struct rt_msghdr)); |
b1a1faba OF |
203 | msg.rtm.rtm_version = RTM_VERSION; |
204 | msg.rtm.rtm_type = cmd; | |
205 | msg.rtm.rtm_seq = msg_seq++; | |
206 | msg.rtm.rtm_addrs = RTA_DST; | |
ff2857b0 | 207 | msg.rtm.rtm_flags = RTF_UP | RTF_PROTO1; |
b1a1faba | 208 | |
d7661fbe MM |
209 | /* XXXX */ |
210 | if (net_pxlen(net->n.addr) == net_max_prefix_length[net->n.addr->type]) | |
b1a1faba | 211 | msg.rtm.rtm_flags |= RTF_HOST; |
b1a1faba | 212 | else |
b1a1faba | 213 | msg.rtm.rtm_addrs |= RTA_NETMASK; |
c01a9466 OZ |
214 | |
215 | #ifdef KRT_SHARED_SOCKET | |
216 | msg.rtm.rtm_tableid = KRT_CF->sys.table_id; | |
217 | #endif | |
b1a1faba OF |
218 | |
219 | #ifdef RTF_REJECT | |
220 | if(a->dest == RTD_UNREACHABLE) | |
221 | msg.rtm.rtm_flags |= RTF_REJECT; | |
222 | #endif | |
223 | #ifdef RTF_BLACKHOLE | |
224 | if(a->dest == RTD_BLACKHOLE) | |
225 | msg.rtm.rtm_flags |= RTF_BLACKHOLE; | |
226 | #endif | |
227 | ||
228 | /* This is really very nasty, but I'm not able | |
229 | * to add "(reject|blackhole)" route without | |
230 | * gateway set | |
231 | */ | |
232 | if(!i) | |
233 | { | |
8281ff20 | 234 | i = HEAD(iface_list); |
77772dbc | 235 | |
8281ff20 OF |
236 | WALK_LIST(j, iface_list) |
237 | { | |
238 | if (j->flags & IF_LOOPBACK) | |
b1a1faba | 239 | { |
8281ff20 OF |
240 | i = j; |
241 | break; | |
b1a1faba OF |
242 | } |
243 | } | |
244 | } | |
245 | ||
44aa101c OZ |
246 | gw = a->gw; |
247 | ||
44aa101c | 248 | /* Embed interface ID to link-local address */ |
304ac2e8 | 249 | if (ipa_is_link_local(gw)) |
44aa101c | 250 | _I0(gw) = 0xfe800000 | (i->index & 0x0000ffff); |
44aa101c | 251 | |
9b136840 MM |
252 | int af = AF_UNSPEC; |
253 | ||
254 | switch (net->n.addr->type) { | |
255 | case NET_IP4: | |
256 | af = AF_INET; | |
257 | break; | |
258 | case NET_IP6: | |
259 | af = AF_INET6; | |
260 | break; | |
261 | default: | |
262 | log(L_ERR "KRT: Not sending VPN route %N to kernel", net->n.addr); | |
263 | return -1; | |
264 | } | |
265 | ||
266 | ||
267 | sockaddr_fill(&dst, af, net_prefix(net->n.addr), NULL, 0); | |
268 | sockaddr_fill(&mask, af, net_pxmask(net->n.addr), NULL, 0); | |
269 | sockaddr_fill(&gate, af, gw, NULL, 0); | |
44aa101c | 270 | |
b1a1faba OF |
271 | switch (a->dest) |
272 | { | |
273 | case RTD_ROUTER: | |
274 | msg.rtm.rtm_flags |= RTF_GATEWAY; | |
275 | msg.rtm.rtm_addrs |= RTA_GATEWAY; | |
276 | break; | |
029ec22d | 277 | |
b1a1faba OF |
278 | #ifdef RTF_REJECT |
279 | case RTD_UNREACHABLE: | |
280 | #endif | |
281 | #ifdef RTF_BLACKHOLE | |
282 | case RTD_BLACKHOLE: | |
283 | #endif | |
284 | case RTD_DEVICE: | |
285 | if(i) | |
286 | { | |
7d196668 | 287 | #ifdef RTF_CLONING |
b1a1faba OF |
288 | if (cmd == RTM_ADD && (i->flags & IF_MULTIACCESS) != IF_MULTIACCESS) /* PTP */ |
289 | msg.rtm.rtm_flags |= RTF_CLONING; | |
7d196668 | 290 | #endif |
b1a1faba OF |
291 | |
292 | if(!i->addr) { | |
c429d4a4 | 293 | log(L_ERR "KRT: interface %s has no IP addess", i->name); |
32f95476 | 294 | return -1; |
b1a1faba OF |
295 | } |
296 | ||
d7661fbe | 297 | sockaddr_fill(&gate, ipa_is_ip4(i->addr->ip) ? AF_INET : AF_INET6, i->addr->ip, NULL, 0); |
b1a1faba OF |
298 | msg.rtm.rtm_addrs |= RTA_GATEWAY; |
299 | } | |
b1a1faba OF |
300 | break; |
301 | default: | |
302 | bug("krt-sock: unknown flags, but not filtered"); | |
303 | } | |
304 | ||
1554cc02 | 305 | msg.rtm.rtm_index = i->index; |
b1a1faba OF |
306 | |
307 | NEXTADDR(RTA_DST, dst); | |
308 | NEXTADDR(RTA_GATEWAY, gate); | |
309 | NEXTADDR(RTA_NETMASK, mask); | |
310 | ||
311 | l = body - (char *)&msg; | |
312 | msg.rtm.rtm_msglen = l; | |
313 | ||
c01a9466 | 314 | if ((l = write(p->sys.sk->fd, (char *)&msg, l)) < 0) { |
9b136840 | 315 | log(L_ERR "KRT: Error sending route %N to kernel: %m", net->n.addr); |
32f95476 | 316 | return -1; |
b1a1faba | 317 | } |
32f95476 OZ |
318 | |
319 | return 0; | |
b1a1faba OF |
320 | } |
321 | ||
322 | void | |
c01a9466 | 323 | krt_replace_rte(struct krt_proto *p, net *n, rte *new, rte *old, |
7a2c48da | 324 | struct ea_list *eattrs UNUSED) |
b1a1faba | 325 | { |
32f95476 OZ |
326 | int err = 0; |
327 | ||
b1a1faba | 328 | if (old) |
c01a9466 | 329 | krt_send_route(p, RTM_DELETE, old); |
32f95476 | 330 | |
b1a1faba | 331 | if (new) |
c01a9466 | 332 | err = krt_send_route(p, RTM_ADD, new); |
32f95476 OZ |
333 | |
334 | if (err < 0) | |
335 | n->n.flags |= KRF_SYNC_ERROR; | |
336 | else | |
337 | n->n.flags &= ~KRF_SYNC_ERROR; | |
b1a1faba OF |
338 | } |
339 | ||
ff2857b0 OZ |
340 | #define SKIP(ARG...) do { DBG("KRT: Ignoring route - " ARG); return; } while(0) |
341 | ||
282997f2 | 342 | static void |
c01a9466 | 343 | krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan) |
b1a1faba | 344 | { |
c01a9466 OZ |
345 | /* p is NULL iff KRT_SHARED_SOCKET and !scan */ |
346 | ||
3f358161 | 347 | int ipv6; |
b1a1faba OF |
348 | rte *e; |
349 | net *net; | |
ff2857b0 | 350 | sockaddr dst, gate, mask; |
b1a1faba | 351 | ip_addr idst, igate, imask; |
9b136840 | 352 | net_addr ndst; |
b1a1faba | 353 | void *body = (char *)msg->buf; |
90097f4f | 354 | int new = (msg->rtm.rtm_type != RTM_DELETE); |
ff2857b0 | 355 | char *errmsg = "KRT: Invalid route received"; |
b1a1faba OF |
356 | int flags = msg->rtm.rtm_flags; |
357 | int addrs = msg->rtm.rtm_addrs; | |
72aed1a0 OZ |
358 | int src; |
359 | byte src2; | |
b1a1faba | 360 | |
ff2857b0 OZ |
361 | if (!(flags & RTF_UP) && scan) |
362 | SKIP("not up in scan\n"); | |
b1a1faba | 363 | |
ff2857b0 OZ |
364 | if (!(flags & RTF_DONE) && !scan) |
365 | SKIP("not done in async\n"); | |
b1a1faba | 366 | |
ff2857b0 OZ |
367 | if (flags & RTF_LLINFO) |
368 | SKIP("link-local\n"); | |
b1a1faba | 369 | |
ff2857b0 OZ |
370 | GETADDR(&dst, RTA_DST); |
371 | GETADDR(&gate, RTA_GATEWAY); | |
372 | GETADDR(&mask, RTA_NETMASK); | |
b1a1faba | 373 | |
d7661fbe MM |
374 | switch (dst.sa.sa_family) { |
375 | case AF_INET: | |
3f358161 MM |
376 | ipv6 = 0; |
377 | break; | |
8109eb76 | 378 | case AF_INET6: |
3f358161 | 379 | ipv6 = 1; |
8109eb76 | 380 | break; |
d7661fbe MM |
381 | default: |
382 | SKIP("invalid DST"); | |
383 | } | |
b1a1faba | 384 | |
3f358161 MM |
385 | /* We do not test family for RTA_NETMASK, because BSD sends us |
386 | some strange values, but interpreting them as IPv4/IPv6 works */ | |
387 | mask.sa.sa_family = dst.sa.sa_family; | |
388 | ||
05476c4d | 389 | idst = ipa_from_sa(&dst); |
8109eb76 | 390 | imask = ipa_from_sa(&mask); |
d7661fbe | 391 | igate = (gate.sa.sa_family == dst.sa.sa_family) ? ipa_from_sa(&gate) : IPA_NONE; |
b1a1faba | 392 | |
8109eb76 MM |
393 | #ifdef KRT_SHARED_SOCKET |
394 | if (!scan) | |
395 | { | |
396 | int table_id = msg->rtm.rtm_tableid; | |
3f358161 | 397 | p = (table_id < KRT_MAX_TABLES) ? krt_table_map[table_id][ipv6] : NULL; |
05476c4d | 398 | |
8109eb76 MM |
399 | if (!p) |
400 | SKIP("unknown table id %d\n", table_id); | |
401 | } | |
402 | #endif | |
3f358161 MM |
403 | if ((!ipv6) && (p->p.table->addr_type != NET_IP4)) |
404 | SKIP("reading only IPv4 routes"); | |
405 | if ( ipv6 && (p->p.table->addr_type != NET_IP6)) | |
406 | SKIP("reading only IPv6 routes"); | |
b1a1faba | 407 | |
ff2857b0 OZ |
408 | int c = ipa_classify_net(idst); |
409 | if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK)) | |
410 | SKIP("strange class/scope\n"); | |
b1a1faba | 411 | |
8109eb76 | 412 | int pxlen; |
3f358161 | 413 | if (ipv6) |
8109eb76 | 414 | pxlen = (flags & RTF_HOST) ? IP6_MAX_PREFIX_LENGTH : ip6_masklen(&ipa_to_ip6(imask)); |
3f358161 MM |
415 | else |
416 | pxlen = (flags & RTF_HOST) ? IP4_MAX_PREFIX_LENGTH : ip4_masklen(ipa_to_ip4(imask)); | |
8109eb76 | 417 | |
ff2857b0 OZ |
418 | if (pxlen < 0) |
419 | { log(L_ERR "%s (%I) - netmask %I", errmsg, idst, imask); return; } | |
b1a1faba | 420 | |
3f358161 MM |
421 | if (ipv6) |
422 | net_fill_ip6(&ndst, ipa_to_ip6(idst), pxlen); | |
423 | else | |
424 | net_fill_ip4(&ndst, ipa_to_ip4(idst), pxlen); | |
9b136840 | 425 | |
ff2857b0 | 426 | if ((flags & RTF_GATEWAY) && ipa_zero(igate)) |
9b136840 | 427 | { log(L_ERR "%s (%N) - missing gateway", errmsg, ndst); return; } |
ff2857b0 OZ |
428 | |
429 | u32 self_mask = RTF_PROTO1; | |
a9f380fe | 430 | u32 alien_mask = RTF_STATIC | RTF_PROTO1 | RTF_GATEWAY; |
ff2857b0 | 431 | |
72aed1a0 OZ |
432 | src2 = (flags & RTF_STATIC) ? 1 : 0; |
433 | src2 |= (flags & RTF_PROTO1) ? 2 : 0; | |
434 | ||
ff2857b0 OZ |
435 | #ifdef RTF_PROTO2 |
436 | alien_mask |= RTF_PROTO2; | |
72aed1a0 | 437 | src2 |= (flags & RTF_PROTO2) ? 4 : 0; |
ff2857b0 | 438 | #endif |
b1a1faba | 439 | |
ff2857b0 OZ |
440 | #ifdef RTF_PROTO3 |
441 | alien_mask |= RTF_PROTO3; | |
72aed1a0 | 442 | src2 |= (flags & RTF_PROTO3) ? 8 : 0; |
ff2857b0 OZ |
443 | #endif |
444 | ||
a9f380fe OZ |
445 | #ifdef RTF_REJECT |
446 | alien_mask |= RTF_REJECT; | |
447 | #endif | |
448 | ||
449 | #ifdef RTF_BLACKHOLE | |
450 | alien_mask |= RTF_BLACKHOLE; | |
451 | #endif | |
452 | ||
ff2857b0 OZ |
453 | if (flags & (RTF_DYNAMIC | RTF_MODIFIED)) |
454 | src = KRT_SRC_REDIRECT; | |
455 | else if (flags & self_mask) | |
456 | { | |
457 | if (!scan) | |
458 | SKIP("echo\n"); | |
459 | src = KRT_SRC_BIRD; | |
460 | } | |
461 | else if (flags & alien_mask) | |
462 | src = KRT_SRC_ALIEN; | |
463 | else | |
464 | src = KRT_SRC_KERNEL; | |
465 | ||
9b136840 | 466 | net = net_get(p->p.table, &ndst); |
b1a1faba | 467 | |
cfe34a31 | 468 | rta a = { |
094d2bdb | 469 | .src = p->p.main_source, |
cfe34a31 OZ |
470 | .source = RTS_INHERIT, |
471 | .scope = SCOPE_UNIVERSE, | |
472 | .cast = RTC_UNICAST | |
473 | }; | |
b1a1faba | 474 | |
ff2857b0 OZ |
475 | /* reject/blackhole routes have also set RTF_GATEWAY, |
476 | we wil check them first. */ | |
b1a1faba OF |
477 | |
478 | #ifdef RTF_REJECT | |
479 | if(flags & RTF_REJECT) { | |
480 | a.dest = RTD_UNREACHABLE; | |
ff2857b0 | 481 | goto done; |
b1a1faba OF |
482 | } |
483 | #endif | |
484 | ||
485 | #ifdef RTF_BLACKHOLE | |
486 | if(flags & RTF_BLACKHOLE) { | |
487 | a.dest = RTD_BLACKHOLE; | |
ff2857b0 | 488 | goto done; |
b1a1faba OF |
489 | } |
490 | #endif | |
491 | ||
ff2857b0 OZ |
492 | a.iface = if_find_by_index(msg->rtm.rtm_index); |
493 | if (!a.iface) | |
494 | { | |
9b136840 MM |
495 | log(L_ERR "KRT: Received route %N with unknown ifindex %u", |
496 | net->n.addr, msg->rtm.rtm_index); | |
ff2857b0 OZ |
497 | return; |
498 | } | |
499 | ||
500 | if (flags & RTF_GATEWAY) | |
b1a1faba | 501 | { |
ff2857b0 OZ |
502 | neighbor *ng; |
503 | a.dest = RTD_ROUTER; | |
504 | a.gw = igate; | |
b1a1faba | 505 | |
44aa101c | 506 | /* Clean up embedded interface ID returned in link-local address */ |
304ac2e8 | 507 | if (ipa_is_link_local(a.gw)) |
44aa101c | 508 | _I0(a.gw) = 0xfe800000; |
44aa101c | 509 | |
ff2857b0 OZ |
510 | ng = neigh_find2(&p->p, &a.gw, a.iface, 0); |
511 | if (!ng || (ng->scope == SCOPE_HOST)) | |
512 | { | |
de14a7c7 OZ |
513 | /* Ignore routes with next-hop 127.0.0.1, host routes with such |
514 | next-hop appear on OpenBSD for address aliases. */ | |
515 | if (ipa_classify(a.gw) == (IADDR_HOST | SCOPE_HOST)) | |
516 | return; | |
517 | ||
9b136840 MM |
518 | log(L_ERR "KRT: Received route %N with strange next-hop %I", |
519 | net->n.addr, a.gw); | |
ff2857b0 OZ |
520 | return; |
521 | } | |
522 | } | |
523 | else | |
524 | a.dest = RTD_DEVICE; | |
b1a1faba | 525 | |
ff2857b0 | 526 | done: |
b1a1faba OF |
527 | e = rte_get_temp(&a); |
528 | e->net = net; | |
529 | e->u.krt.src = src; | |
72aed1a0 | 530 | e->u.krt.proto = src2; |
ff2857b0 OZ |
531 | |
532 | /* These are probably too Linux-specific */ | |
ff2857b0 | 533 | e->u.krt.type = 0; |
b1a1faba OF |
534 | e->u.krt.metric = 0; |
535 | ||
536 | if (scan) | |
537 | krt_got_route(p, e); | |
538 | else | |
539 | krt_got_route_async(p, e, new); | |
540 | } | |
541 | ||
09686693 OZ |
542 | static void |
543 | krt_read_ifannounce(struct ks_msg *msg) | |
544 | { | |
545 | struct if_announcemsghdr *ifam = (struct if_announcemsghdr *)&msg->rtm; | |
546 | ||
547 | if (ifam->ifan_what == IFAN_ARRIVAL) | |
548 | { | |
549 | /* Not enough info to create the iface, so we just trigger iface scan */ | |
550 | kif_request_scan(); | |
551 | } | |
552 | else if (ifam->ifan_what == IFAN_DEPARTURE) | |
553 | { | |
554 | struct iface *iface = if_find_by_index(ifam->ifan_index); | |
555 | ||
556 | /* Interface is destroyed */ | |
557 | if (!iface) | |
558 | { | |
559 | DBG("KRT: unknown interface (%s, #%d) going down. Ignoring\n", ifam->ifan_name, ifam->ifan_index); | |
560 | return; | |
561 | } | |
562 | ||
563 | if_delete(iface); | |
564 | } | |
565 | ||
566 | DBG("KRT: IFANNOUNCE what: %d index %d name %s\n", ifam->ifan_what, ifam->ifan_index, ifam->ifan_name); | |
567 | } | |
568 | ||
282997f2 | 569 | static void |
3216eb03 | 570 | krt_read_ifinfo(struct ks_msg *msg, int scan) |
b1a1faba OF |
571 | { |
572 | struct if_msghdr *ifm = (struct if_msghdr *)&msg->rtm; | |
573 | void *body = (void *)(ifm + 1); | |
574 | struct sockaddr_dl *dl = NULL; | |
ae80a2de | 575 | uint i; |
732a0a25 | 576 | struct iface *iface = NULL, f = {}; |
b1a1faba | 577 | int fl = ifm->ifm_flags; |
732a0a25 | 578 | int nlen = 0; |
b1a1faba | 579 | |
d32a071d | 580 | for (i = 1; i<=RTA_IFP; i <<= 1) |
b1a1faba | 581 | { |
d32a071d | 582 | if (i & ifm->ifm_addrs) |
b1a1faba | 583 | { |
d32a071d | 584 | if (i == RTA_IFP) |
b1a1faba OF |
585 | { |
586 | dl = (struct sockaddr_dl *)body; | |
587 | break; | |
588 | } | |
d32a071d | 589 | body += ROUNDUP(((struct sockaddr *)&(body))->sa_len); |
b1a1faba OF |
590 | } |
591 | } | |
592 | ||
732a0a25 | 593 | if (dl && (dl->sdl_family != AF_LINK)) |
b1a1faba | 594 | { |
09686693 | 595 | log(L_WARN "Ignoring strange IFINFO"); |
b1a1faba OF |
596 | return; |
597 | } | |
598 | ||
732a0a25 OZ |
599 | if (dl) |
600 | nlen = MIN(sizeof(f.name)-1, dl->sdl_nlen); | |
601 | ||
602 | /* Note that asynchronous IFINFO messages do not contain iface | |
603 | name, so we have to found an existing iface by iface index */ | |
b1a1faba | 604 | |
732a0a25 OZ |
605 | iface = if_find_by_index(ifm->ifm_index); |
606 | if (!iface) | |
b1a1faba OF |
607 | { |
608 | /* New interface */ | |
732a0a25 OZ |
609 | if (!dl) |
610 | return; /* No interface name, ignoring */ | |
dad7ee70 | 611 | |
732a0a25 OZ |
612 | memcpy(f.name, dl->sdl_data, nlen); |
613 | DBG("New interface '%s' found\n", f.name); | |
614 | } | |
615 | else if (dl && memcmp(iface->name, dl->sdl_data, nlen)) | |
616 | { | |
617 | /* Interface renamed */ | |
618 | if_delete(iface); | |
619 | memcpy(f.name, dl->sdl_data, nlen); | |
b1a1faba OF |
620 | } |
621 | else | |
622 | { | |
732a0a25 OZ |
623 | /* Old interface */ |
624 | memcpy(f.name, iface->name, sizeof(f.name)); | |
b1a1faba OF |
625 | } |
626 | ||
732a0a25 | 627 | f.index = ifm->ifm_index; |
b1a1faba | 628 | f.mtu = ifm->ifm_data.ifi_mtu; |
b1a1faba OF |
629 | |
630 | if (fl & IFF_UP) | |
f25cb0ef OZ |
631 | f.flags |= IF_ADMIN_UP; |
632 | if (ifm->ifm_data.ifi_link_state != LINK_STATE_DOWN) | |
633 | f.flags |= IF_LINK_UP; /* up or unknown */ | |
b1a1faba OF |
634 | if (fl & IFF_LOOPBACK) /* Loopback */ |
635 | f.flags |= IF_MULTIACCESS | IF_LOOPBACK | IF_IGNORE; | |
636 | else if (fl & IFF_POINTOPOINT) /* PtP */ | |
637 | f.flags |= IF_MULTICAST; | |
638 | else if (fl & IFF_BROADCAST) /* Broadcast */ | |
639 | f.flags |= IF_MULTIACCESS | IF_BROADCAST | IF_MULTICAST; | |
640 | else | |
641 | f.flags |= IF_MULTIACCESS; /* NBMA */ | |
642 | ||
3216eb03 OZ |
643 | iface = if_update(&f); |
644 | ||
645 | if (!scan) | |
646 | if_end_partial_update(iface); | |
b1a1faba OF |
647 | } |
648 | ||
282997f2 | 649 | static void |
3216eb03 | 650 | krt_read_addr(struct ks_msg *msg, int scan) |
b1a1faba OF |
651 | { |
652 | struct ifa_msghdr *ifam = (struct ifa_msghdr *)&msg->rtm; | |
653 | void *body = (void *)(ifam + 1); | |
654 | sockaddr addr, mask, brd; | |
b1a1faba OF |
655 | struct iface *iface = NULL; |
656 | struct ifa ifa; | |
657 | struct sockaddr null; | |
658 | ip_addr iaddr, imask, ibrd; | |
659 | int addrs = ifam->ifam_addrs; | |
660 | int scope, masklen = -1; | |
661 | int new = (ifam->ifam_type == RTM_NEWADDR); | |
b1a1faba | 662 | |
ff2857b0 OZ |
663 | /* Strange messages with zero (invalid) ifindex appear on OpenBSD */ |
664 | if (ifam->ifam_index == 0) | |
665 | return; | |
666 | ||
b1a1faba OF |
667 | if(!(iface = if_find_by_index(ifam->ifam_index))) |
668 | { | |
669 | log(L_ERR "KIF: Received address message for unknown interface %d", ifam->ifam_index); | |
670 | return; | |
671 | } | |
672 | ||
673 | GETADDR (&null, RTA_DST); | |
674 | GETADDR (&null, RTA_GATEWAY); | |
675 | GETADDR (&mask, RTA_NETMASK); | |
676 | GETADDR (&null, RTA_GENMASK); | |
677 | GETADDR (&null, RTA_IFP); | |
678 | GETADDR (&addr, RTA_IFA); | |
679 | GETADDR (&null, RTA_AUTHOR); | |
680 | GETADDR (&brd, RTA_BRD); | |
681 | ||
d7661fbe MM |
682 | /* Is addr family IP4 or IP6? */ |
683 | int ipv6; | |
684 | switch (addr.sa.sa_family) { | |
685 | case AF_INET: ipv6 = 0; break; | |
686 | case AF_INET6: ipv6 = 1; break; | |
687 | default: return; | |
688 | } | |
b1a1faba | 689 | |
05476c4d OZ |
690 | iaddr = ipa_from_sa(&addr); |
691 | imask = ipa_from_sa(&mask); | |
692 | ibrd = ipa_from_sa(&brd); | |
693 | ||
8109eb76 | 694 | if ((ipv6 ? (masklen = ip6_masklen(&ipa_to_ip6(imask))) : (masklen = ip4_masklen(ipa_to_ip4(imask)))) < 0) |
b1a1faba | 695 | { |
8109eb76 | 696 | log(L_ERR "KIF: Invalid mask %I for %s", imask, iface->name); |
b1a1faba OF |
697 | return; |
698 | } | |
699 | ||
64534ea2 | 700 | /* Clean up embedded interface ID returned in link-local address */ |
b1a1faba | 701 | |
304ac2e8 | 702 | if (ipa_is_link_local(iaddr)) |
64534ea2 | 703 | _I0(iaddr) = 0xfe800000; |
b1a1faba | 704 | |
304ac2e8 | 705 | if (ipa_is_link_local(ibrd)) |
64534ea2 | 706 | _I0(ibrd) = 0xfe800000; |
b1a1faba | 707 | |
b1a1faba | 708 | |
64534ea2 OZ |
709 | bzero(&ifa, sizeof(ifa)); |
710 | ifa.iface = iface; | |
711 | ifa.ip = iaddr; | |
b1a1faba OF |
712 | |
713 | scope = ipa_classify(ifa.ip); | |
b1a1faba OF |
714 | if (scope < 0) |
715 | { | |
716 | log(L_ERR "KIF: Invalid interface address %I for %s", ifa.ip, iface->name); | |
717 | return; | |
718 | } | |
719 | ifa.scope = scope & IADDR_SCOPE_MASK; | |
720 | ||
d7661fbe | 721 | if (masklen < (ipv6 ? IP6_MAX_PREFIX_LENGTH : IP4_MAX_PREFIX_LENGTH)) |
ba321706 | 722 | { |
9b136840 MM |
723 | net_fill_ipa(&ifa.prefix, ifa.ip, masklen); |
724 | net_normalize(&ifa.prefix); | |
ba321706 | 725 | |
d7661fbe | 726 | if (masklen == ((ipv6 ? IP6_MAX_PREFIX_LENGTH : IP4_MAX_PREFIX_LENGTH) - 1)) |
ba321706 OZ |
727 | ifa.opposite = ipa_opposite_m1(ifa.ip); |
728 | ||
8109eb76 | 729 | if ((!ipv6) && (masklen == IP4_MAX_PREFIX_LENGTH - 2)) |
ba321706 | 730 | ifa.opposite = ipa_opposite_m2(ifa.ip); |
f515e229 | 731 | |
64534ea2 OZ |
732 | if (iface->flags & IF_BROADCAST) |
733 | ifa.brd = ibrd; | |
734 | ||
f515e229 | 735 | if (!(iface->flags & IF_MULTIACCESS)) |
64534ea2 | 736 | ifa.opposite = ibrd; |
ba321706 | 737 | } |
64534ea2 | 738 | else if (!(iface->flags & IF_MULTIACCESS) && ipa_nonzero(ibrd)) |
afa9f66c | 739 | { |
d7661fbe | 740 | net_fill_ipa(&ifa.prefix, ibrd, (ipv6 ? IP6_MAX_PREFIX_LENGTH : IP4_MAX_PREFIX_LENGTH)); |
9b136840 | 741 | ifa.opposite = ibrd; |
52a43ae3 | 742 | ifa.flags |= IA_PEER; |
f515e229 OZ |
743 | } |
744 | else | |
745 | { | |
d7661fbe | 746 | net_fill_ipa(&ifa.prefix, ifa.ip, (ipv6 ? IP6_MAX_PREFIX_LENGTH : IP4_MAX_PREFIX_LENGTH)); |
f515e229 | 747 | ifa.flags |= IA_HOST; |
afa9f66c OZ |
748 | } |
749 | ||
b1a1faba OF |
750 | if (new) |
751 | ifa_update(&ifa); | |
752 | else | |
753 | ifa_delete(&ifa); | |
3216eb03 OZ |
754 | |
755 | if (!scan) | |
756 | if_end_partial_update(iface); | |
b1a1faba OF |
757 | } |
758 | ||
c01a9466 | 759 | static void |
b1a1faba OF |
760 | krt_read_msg(struct proto *p, struct ks_msg *msg, int scan) |
761 | { | |
c01a9466 OZ |
762 | /* p is NULL iff KRT_SHARED_SOCKET and !scan */ |
763 | ||
b1a1faba OF |
764 | switch (msg->rtm.rtm_type) |
765 | { | |
766 | case RTM_GET: | |
767 | if(!scan) return; | |
768 | case RTM_ADD: | |
769 | case RTM_DELETE: | |
90097f4f | 770 | case RTM_CHANGE: |
c01a9466 | 771 | krt_read_route(msg, (struct krt_proto *)p, scan); |
b1a1faba | 772 | break; |
09686693 OZ |
773 | case RTM_IFANNOUNCE: |
774 | krt_read_ifannounce(msg); | |
775 | break; | |
b1a1faba | 776 | case RTM_IFINFO: |
3216eb03 | 777 | krt_read_ifinfo(msg, scan); |
b1a1faba OF |
778 | break; |
779 | case RTM_NEWADDR: | |
780 | case RTM_DELADDR: | |
3216eb03 | 781 | krt_read_addr(msg, scan); |
b1a1faba | 782 | break; |
b1a1faba | 783 | default: |
b1a1faba OF |
784 | break; |
785 | } | |
786 | } | |
787 | ||
c01a9466 OZ |
788 | |
789 | /* Sysctl based scans */ | |
790 | ||
791 | static byte *krt_buffer; | |
792 | static size_t krt_buflen, krt_bufmin; | |
793 | static struct proto *krt_buffer_owner; | |
794 | ||
795 | static byte * | |
796 | krt_buffer_update(struct proto *p, size_t *needed) | |
797 | { | |
798 | size_t req = *needed; | |
799 | ||
800 | if ((req > krt_buflen) || | |
801 | ((p == krt_buffer_owner) && (req < krt_bufmin))) | |
802 | { | |
803 | /* min buflen is 32 kB, step is 8 kB, or 128 kB if > 1 MB */ | |
804 | size_t step = (req < 0x100000) ? 0x2000 : 0x20000; | |
805 | krt_buflen = (req < 0x6000) ? 0x8000 : (req + step); | |
806 | krt_bufmin = (req < 0x8000) ? 0 : (req - 2*step); | |
807 | ||
808 | if (krt_buffer) | |
809 | mb_free(krt_buffer); | |
810 | krt_buffer = mb_alloc(krt_pool, krt_buflen); | |
811 | krt_buffer_owner = p; | |
812 | } | |
813 | ||
814 | *needed = krt_buflen; | |
815 | return krt_buffer; | |
816 | } | |
817 | ||
282997f2 | 818 | static void |
c01a9466 | 819 | krt_buffer_release(struct proto *p) |
b1a1faba | 820 | { |
c01a9466 OZ |
821 | if (p == krt_buffer_owner) |
822 | { | |
823 | mb_free(krt_buffer); | |
824 | krt_buffer = NULL; | |
825 | krt_buflen = 0; | |
826 | krt_buffer_owner = 0; | |
827 | } | |
828 | } | |
829 | ||
282997f2 | 830 | static void |
c01a9466 | 831 | krt_sysctl_scan(struct proto *p, int cmd, int table_id) |
b1a1faba | 832 | { |
c01a9466 OZ |
833 | byte *buf, *next; |
834 | int mib[7], mcnt; | |
835 | size_t needed; | |
b1a1faba | 836 | struct ks_msg *m; |
4aef102b | 837 | int retries = 3; |
c01a9466 | 838 | int rv; |
b1a1faba OF |
839 | |
840 | mib[0] = CTL_NET; | |
841 | mib[1] = PF_ROUTE; | |
842 | mib[2] = 0; | |
8109eb76 | 843 | mib[3] = 0; // Set AF to 0 for all available families |
b1a1faba OF |
844 | mib[4] = cmd; |
845 | mib[5] = 0; | |
c01a9466 | 846 | mcnt = 6; |
b1a1faba | 847 | |
c01a9466 OZ |
848 | #ifdef KRT_USE_SYSCTL_7 |
849 | if (table_id >= 0) | |
850 | { | |
851 | mib[6] = table_id; | |
852 | mcnt = 7; | |
853 | } | |
854 | #endif | |
b1a1faba | 855 | |
c01a9466 OZ |
856 | #ifdef KRT_USE_SETFIB_SCAN |
857 | if (table_id > 0) | |
858 | if (setfib(table_id) < 0) | |
859 | { | |
860 | log(L_ERR "KRT: setfib(%d) failed: %m", table_id); | |
861 | return; | |
862 | } | |
863 | #endif | |
b1a1faba | 864 | |
c01a9466 OZ |
865 | try: |
866 | rv = sysctl(mib, mcnt, NULL, &needed, NULL, 0); | |
867 | if (rv < 0) | |
b1a1faba | 868 | { |
c01a9466 OZ |
869 | /* OpenBSD returns EINVAL for not yet used tables */ |
870 | if ((errno == EINVAL) && (table_id > 0)) | |
871 | goto exit; | |
872 | ||
873 | log(L_ERR "KRT: Route scan estimate failed: %m"); | |
874 | goto exit; | |
b1a1faba OF |
875 | } |
876 | ||
c01a9466 OZ |
877 | /* The table is empty */ |
878 | if (needed == 0) | |
879 | goto exit; | |
880 | ||
881 | buf = krt_buffer_update(p, &needed); | |
882 | ||
883 | rv = sysctl(mib, mcnt, buf, &needed, NULL, 0); | |
884 | if (rv < 0) | |
b1a1faba | 885 | { |
c01a9466 OZ |
886 | /* The buffer size changed since last sysctl ('needed' is not changed) */ |
887 | if ((errno == ENOMEM) && retries--) | |
888 | goto try; | |
4aef102b | 889 | |
c01a9466 OZ |
890 | log(L_ERR "KRT: Route scan failed: %m"); |
891 | goto exit; | |
b1a1faba OF |
892 | } |
893 | ||
c01a9466 OZ |
894 | #ifdef KRT_USE_SETFIB_SCAN |
895 | if (table_id > 0) | |
896 | if (setfib(0) < 0) | |
897 | die("KRT: setfib(%d) failed: %m", 0); | |
898 | #endif | |
899 | ||
900 | /* Process received messages */ | |
901 | for (next = buf; next < (buf + needed); next += m->rtm.rtm_msglen) | |
b1a1faba OF |
902 | { |
903 | m = (struct ks_msg *)next; | |
904 | krt_read_msg(p, m, 1); | |
905 | } | |
b1a1faba | 906 | |
c01a9466 OZ |
907 | return; |
908 | ||
909 | exit: | |
910 | krt_buffer_release(p); | |
911 | ||
912 | #ifdef KRT_USE_SETFIB_SCAN | |
913 | if (table_id > 0) | |
914 | if (setfib(0) < 0) | |
915 | die("KRT: setfib(%d) failed: %m", 0); | |
916 | #endif | |
917 | } | |
ff2857b0 | 918 | |
b1a1faba | 919 | void |
396dfa90 | 920 | krt_do_scan(struct krt_proto *p) |
b1a1faba | 921 | { |
c01a9466 | 922 | krt_sysctl_scan(&p->p, NET_RT_DUMP, KRT_CF->sys.table_id); |
b1a1faba OF |
923 | } |
924 | ||
925 | void | |
396dfa90 | 926 | kif_do_scan(struct kif_proto *p) |
b1a1faba | 927 | { |
b1a1faba | 928 | if_start_update(); |
c01a9466 | 929 | krt_sysctl_scan(&p->p, NET_RT_IFLIST, -1); |
b1a1faba OF |
930 | if_end_update(); |
931 | } | |
932 | ||
c01a9466 OZ |
933 | |
934 | /* Kernel sockets */ | |
935 | ||
396dfa90 OZ |
936 | static int |
937 | krt_sock_hook(sock *sk, int size UNUSED) | |
938 | { | |
939 | struct ks_msg msg; | |
940 | int l = read(sk->fd, (char *)&msg, sizeof(msg)); | |
941 | ||
c01a9466 | 942 | if (l <= 0) |
396dfa90 OZ |
943 | log(L_ERR "krt-sock: read failed"); |
944 | else | |
c01a9466 | 945 | krt_read_msg((struct proto *) sk->data, &msg, 0); |
396dfa90 OZ |
946 | |
947 | return 0; | |
948 | } | |
b1a1faba | 949 | |
c01a9466 OZ |
950 | static sock * |
951 | krt_sock_open(pool *pool, void *data, int table_id) | |
952 | { | |
953 | sock *sk; | |
954 | int fd; | |
955 | ||
956 | fd = socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC); | |
957 | if (fd < 0) | |
958 | die("Cannot open kernel socket for routes"); | |
959 | ||
960 | #ifdef KRT_USE_SETFIB_SOCK | |
961 | if (table_id > 0) | |
962 | { | |
963 | if (setsockopt(fd, SOL_SOCKET, SO_SETFIB, &table_id, sizeof(table_id)) < 0) | |
964 | die("Cannot set FIB %d for kernel socket: %m", table_id); | |
965 | } | |
966 | #endif | |
967 | ||
968 | sk = sk_new(pool); | |
969 | sk->type = SK_MAGIC; | |
970 | sk->rx_hook = krt_sock_hook; | |
971 | sk->fd = fd; | |
972 | sk->data = data; | |
973 | ||
974 | if (sk_open(sk) < 0) | |
975 | bug("krt-sock: sk_open failed"); | |
976 | ||
977 | return sk; | |
978 | } | |
979 | ||
8109eb76 | 980 | static u32 krt_table_cf[(KRT_MAX_TABLES+31) / 32][2]; |
c01a9466 OZ |
981 | |
982 | #ifdef KRT_SHARED_SOCKET | |
983 | ||
984 | static sock *krt_sock; | |
985 | static int krt_sock_count; | |
986 | ||
987 | ||
988 | static void | |
989 | krt_sock_open_shared(void) | |
990 | { | |
991 | if (!krt_sock_count) | |
992 | krt_sock = krt_sock_open(krt_pool, NULL, -1); | |
993 | ||
994 | krt_sock_count++; | |
995 | } | |
996 | ||
997 | static void | |
998 | krt_sock_close_shared(void) | |
999 | { | |
1000 | krt_sock_count--; | |
1001 | ||
1002 | if (!krt_sock_count) | |
1003 | { | |
1004 | rfree(krt_sock); | |
1005 | krt_sock = NULL; | |
1006 | } | |
1007 | } | |
1008 | ||
9ddbfbdd | 1009 | int |
c01a9466 | 1010 | krt_sys_start(struct krt_proto *p) |
b1a1faba | 1011 | { |
8109eb76 MM |
1012 | int id = KRT_CF->sys.table_id; |
1013 | ||
1014 | if (krt_table_cf[id/32][!!(p->af == AF_INET6)] & (1 << (id%32))) | |
1015 | { | |
1016 | log(L_ERR "%s: Multiple kernel syncers defined for table #%d", p->p.name, id); | |
1017 | return 0; | |
1018 | } | |
1019 | ||
1020 | krt_table_cf[id/32][!!(p->af == AF_INET6)] |= (1 << (id%32)); | |
1021 | ||
1022 | krt_table_map[KRT_CF->sys.table_id][!!(p->af == AF_INET6)] = p; | |
396dfa90 | 1023 | |
c01a9466 OZ |
1024 | krt_sock_open_shared(); |
1025 | p->sys.sk = krt_sock; | |
9ddbfbdd MM |
1026 | |
1027 | return 1; | |
c01a9466 | 1028 | } |
396dfa90 | 1029 | |
c01a9466 OZ |
1030 | void |
1031 | krt_sys_shutdown(struct krt_proto *p) | |
1032 | { | |
8109eb76 MM |
1033 | krt_table_cf[(KRT_CF->sys.table_id)/32][!!(p->af == AF_INET6)] &= ~(1 << ((KRT_CF->sys.table_id)%32)); |
1034 | ||
c01a9466 OZ |
1035 | krt_sock_close_shared(); |
1036 | p->sys.sk = NULL; | |
396dfa90 | 1037 | |
8109eb76 | 1038 | krt_table_map[KRT_CF->sys.table_id][!!(p->af == AF_INET6)] = NULL; |
396dfa90 | 1039 | |
c01a9466 OZ |
1040 | krt_buffer_release(&p->p); |
1041 | } | |
396dfa90 | 1042 | |
c01a9466 OZ |
1043 | #else |
1044 | ||
9ddbfbdd | 1045 | int |
c01a9466 OZ |
1046 | krt_sys_start(struct krt_proto *p) |
1047 | { | |
8109eb76 MM |
1048 | int id = KRT_CF->sys.table_id; |
1049 | ||
1050 | if (krt_table_cf[id/32][!!(p->af == AF_INET6)] & (1 << (id%32))) | |
1051 | { | |
1052 | log(L_ERR "%s: Multiple kernel syncers defined for table #%d", p->p.name, id); | |
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | krt_table_cf[id/32][!!(p->af == AF_INET6)] |= (1 << (id%32)); | |
1057 | ||
c01a9466 | 1058 | p->sys.sk = krt_sock_open(p->p.pool, p, KRT_CF->sys.table_id); |
9ddbfbdd | 1059 | return 1; |
b1a1faba OF |
1060 | } |
1061 | ||
1062 | void | |
c01a9466 | 1063 | krt_sys_shutdown(struct krt_proto *p) |
b1a1faba | 1064 | { |
8109eb76 MM |
1065 | krt_table_cf[(KRT_CF->sys.table_id)/32][!!(p->af == AF_INET6)] &= ~(1 << ((KRT_CF->sys.table_id)%32)); |
1066 | ||
c01a9466 OZ |
1067 | rfree(p->sys.sk); |
1068 | p->sys.sk = NULL; | |
a209d5d8 | 1069 | |
c01a9466 | 1070 | krt_buffer_release(&p->p); |
ff2857b0 | 1071 | } |
b1a1faba | 1072 | |
c01a9466 OZ |
1073 | #endif /* KRT_SHARED_SOCKET */ |
1074 | ||
a209d5d8 | 1075 | |
c01a9466 OZ |
1076 | /* KRT configuration callbacks */ |
1077 | ||
c01a9466 OZ |
1078 | int |
1079 | krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o) | |
1080 | { | |
1081 | return n->sys.table_id == o->sys.table_id; | |
ff2857b0 | 1082 | } |
b1a1faba OF |
1083 | |
1084 | void | |
c01a9466 | 1085 | krt_sys_preconfig(struct config *c UNUSED) |
b1a1faba | 1086 | { |
c01a9466 OZ |
1087 | krt_max_tables = krt_get_max_tables(); |
1088 | bzero(&krt_table_cf, sizeof(krt_table_cf)); | |
b1a1faba OF |
1089 | } |
1090 | ||
c01a9466 OZ |
1091 | void krt_sys_init_config(struct krt_config *c) |
1092 | { | |
1093 | c->sys.table_id = 0; /* Default table */ | |
1094 | } | |
a209d5d8 | 1095 | |
c01a9466 OZ |
1096 | void krt_sys_copy_config(struct krt_config *d, struct krt_config *s) |
1097 | { | |
1098 | d->sys.table_id = s->sys.table_id; | |
1099 | } | |
1100 | ||
1101 | ||
1102 | /* KIF misc code */ | |
1103 | ||
b1a1faba | 1104 | void |
c01a9466 | 1105 | kif_sys_start(struct kif_proto *p UNUSED) |
b1a1faba | 1106 | { |
c01a9466 | 1107 | } |
a209d5d8 | 1108 | |
c01a9466 OZ |
1109 | void |
1110 | kif_sys_shutdown(struct kif_proto *p) | |
1111 | { | |
1112 | krt_buffer_release(&p->p); | |
b1a1faba OF |
1113 | } |
1114 | ||
e237b28a OZ |
1115 | |
1116 | struct ifa * | |
1117 | kif_get_primary_ip(struct iface *i) | |
1118 | { | |
8109eb76 | 1119 | #if 0 |
e237b28a OZ |
1120 | static int fd = -1; |
1121 | ||
1122 | if (fd < 0) | |
1123 | fd = socket(AF_INET, SOCK_DGRAM, 0); | |
1124 | ||
1125 | struct ifreq ifr; | |
1126 | memset(&ifr, 0, sizeof(ifr)); | |
1127 | strncpy(ifr.ifr_name, i->name, IFNAMSIZ); | |
1128 | ||
1129 | int rv = ioctl(fd, SIOCGIFADDR, (char *) &ifr); | |
1130 | if (rv < 0) | |
1131 | return NULL; | |
1132 | ||
1133 | ip_addr addr; | |
1134 | struct sockaddr_in *sin = (struct sockaddr_in *) &ifr.ifr_addr; | |
1135 | memcpy(&addr, &sin->sin_addr.s_addr, sizeof(ip_addr)); | |
1136 | ipa_ntoh(addr); | |
1137 | ||
1138 | struct ifa *a; | |
1139 | WALK_LIST(a, i->addrs) | |
1140 | { | |
1141 | if (ipa_equal(a->ip, addr)) | |
1142 | return a; | |
1143 | } | |
1144 | #endif | |
1145 | ||
1146 | return NULL; | |
1147 | } |