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718e3744 | 1 | /* |
2 | * Address linked list routine. | |
3 | * Copyright (C) 1997, 98 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | * 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "prefix.h" | |
26 | #include "linklist.h" | |
27 | #include "if.h" | |
28 | #include "table.h" | |
29 | #include "rib.h" | |
30 | #include "table.h" | |
31 | #include "log.h" | |
32 | ||
33 | #include "zebra/zserv.h" | |
34 | #include "zebra/redistribute.h" | |
eef1fe11 | 35 | #include "zebra/interface.h" |
718e3744 | 36 | \f |
37 | /* If same interface address is already exist... */ | |
38 | struct connected * | |
39 | connected_check_ipv4 (struct interface *ifp, struct prefix *p) | |
40 | { | |
41 | struct connected *ifc; | |
52dc7ee6 | 42 | struct listnode *node; |
718e3744 | 43 | |
44 | for (node = listhead (ifp->connected); node; node = nextnode (node)) | |
45 | { | |
46 | ifc = getdata (node); | |
47 | ||
48 | if (prefix_same (ifc->address, p)) | |
49 | return ifc; | |
50 | } | |
51 | return NULL; | |
52 | } | |
53 | ||
54 | /* Called from if_up(). */ | |
55 | void | |
56 | connected_up_ipv4 (struct interface *ifp, struct connected *ifc) | |
57 | { | |
58 | struct prefix_ipv4 p; | |
59 | struct prefix_ipv4 *addr; | |
60 | struct prefix_ipv4 *dest; | |
61 | ||
62 | if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) | |
63 | return; | |
64 | ||
65 | addr = (struct prefix_ipv4 *) ifc->address; | |
66 | dest = (struct prefix_ipv4 *) ifc->destination; | |
67 | ||
68 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
69 | p.family = AF_INET; | |
70 | p.prefixlen = addr->prefixlen; | |
71 | ||
72 | /* Point-to-point check. */ | |
2fe28bbb | 73 | if (if_is_pointopoint (ifp) && dest) |
718e3744 | 74 | p.prefix = dest->prefix; |
75 | else | |
76 | p.prefix = addr->prefix; | |
77 | ||
78 | /* Apply mask to the network. */ | |
79 | apply_mask_ipv4 (&p); | |
80 | ||
81 | /* In case of connected address is 0.0.0.0/0 we treat it tunnel | |
82 | address. */ | |
83 | if (prefix_ipv4_any (&p)) | |
84 | return; | |
85 | ||
86 | rib_add_ipv4 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0, 0, 0); | |
87 | ||
88 | rib_update (); | |
89 | } | |
90 | ||
91 | /* Add connected IPv4 route to the interface. */ | |
92 | void | |
93 | connected_add_ipv4 (struct interface *ifp, int flags, struct in_addr *addr, | |
94 | int prefixlen, struct in_addr *broad, char *label) | |
95 | { | |
96 | struct prefix_ipv4 *p; | |
97 | struct connected *ifc; | |
98 | struct connected *current; | |
99 | ||
100 | /* Make connected structure. */ | |
101 | ifc = connected_new (); | |
102 | ifc->ifp = ifp; | |
103 | ifc->flags = flags; | |
104 | ||
105 | /* Allocate new connected address. */ | |
106 | p = prefix_ipv4_new (); | |
107 | p->family = AF_INET; | |
108 | p->prefix = *addr; | |
109 | p->prefixlen = prefixlen; | |
110 | ifc->address = (struct prefix *) p; | |
111 | ||
112 | /* If there is broadcast or pointopoint address. */ | |
113 | if (broad) | |
114 | { | |
115 | p = prefix_ipv4_new (); | |
116 | p->family = AF_INET; | |
117 | p->prefix = *broad; | |
118 | ifc->destination = (struct prefix *) p; | |
119 | } | |
120 | ||
121 | /* Label of this address. */ | |
122 | if (label) | |
123 | ifc->label = strdup (label); | |
124 | ||
125 | /* Check same connected route. */ | |
126 | current = connected_check_ipv4 (ifp, (struct prefix *) ifc->address); | |
127 | if (current) | |
128 | { | |
129 | connected_free (ifc); | |
130 | ifc = current; | |
131 | } | |
132 | else | |
133 | { | |
134 | listnode_add (ifp->connected, ifc); | |
135 | } | |
136 | ||
137 | /* Update interface address information to protocol daemon. */ | |
138 | if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) | |
139 | { | |
eef1fe11 | 140 | if_subnet_add (ifp, ifc); |
141 | ||
718e3744 | 142 | SET_FLAG (ifc->conf, ZEBRA_IFC_REAL); |
143 | ||
144 | zebra_interface_address_add_update (ifp, ifc); | |
145 | ||
146 | if (if_is_up(ifp)) | |
147 | connected_up_ipv4 (ifp, ifc); | |
148 | } | |
149 | } | |
150 | ||
151 | void | |
152 | connected_down_ipv4 (struct interface *ifp, struct connected *ifc) | |
153 | { | |
154 | struct prefix_ipv4 p; | |
155 | struct prefix_ipv4 *addr; | |
156 | struct prefix_ipv4 *dest; | |
157 | ||
158 | if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) | |
159 | return; | |
160 | ||
161 | addr = (struct prefix_ipv4 *)ifc->address; | |
162 | dest = (struct prefix_ipv4 *)ifc->destination; | |
163 | ||
164 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
165 | p.family = AF_INET; | |
166 | p.prefixlen = addr->prefixlen; | |
167 | ||
960182aa | 168 | /* Point-to-point check. */ |
2fe28bbb | 169 | if (dest && if_is_pointopoint (ifp)) |
718e3744 | 170 | p.prefix = dest->prefix; |
171 | else | |
172 | p.prefix = addr->prefix; | |
173 | ||
174 | /* Apply mask to the network. */ | |
175 | apply_mask_ipv4 (&p); | |
176 | ||
177 | /* In case of connected address is 0.0.0.0/0 we treat it tunnel | |
178 | address. */ | |
179 | if (prefix_ipv4_any (&p)) | |
180 | return; | |
181 | ||
182 | rib_delete_ipv4 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0); | |
183 | ||
184 | rib_update (); | |
185 | } | |
186 | ||
187 | /* Delete connected IPv4 route to the interface. */ | |
188 | void | |
189 | connected_delete_ipv4 (struct interface *ifp, int flags, struct in_addr *addr, | |
190 | int prefixlen, struct in_addr *broad, char *label) | |
191 | { | |
192 | struct prefix_ipv4 p; | |
193 | struct connected *ifc; | |
194 | ||
195 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
196 | p.family = AF_INET; | |
197 | p.prefix = *addr; | |
198 | p.prefixlen = prefixlen; | |
199 | ||
200 | ifc = connected_check_ipv4 (ifp, (struct prefix *) &p); | |
201 | if (! ifc) | |
202 | return; | |
203 | ||
204 | /* Update interface address information to protocol daemon. */ | |
205 | if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) | |
206 | { | |
207 | zebra_interface_address_delete_update (ifp, ifc); | |
208 | ||
eef1fe11 | 209 | if_subnet_delete (ifp, ifc); |
210 | ||
718e3744 | 211 | connected_down_ipv4 (ifp, ifc); |
212 | ||
213 | UNSET_FLAG (ifc->conf, ZEBRA_IFC_REAL); | |
214 | } | |
215 | ||
eef1fe11 | 216 | listnode_delete (ifp->connected, ifc); |
217 | connected_free (ifc); | |
718e3744 | 218 | } |
219 | ||
220 | #ifdef HAVE_IPV6 | |
221 | /* If same interface address is already exist... */ | |
222 | struct connected * | |
223 | connected_check_ipv6 (struct interface *ifp, struct prefix *p) | |
224 | { | |
225 | struct connected *ifc; | |
52dc7ee6 | 226 | struct listnode *node; |
718e3744 | 227 | |
228 | for (node = listhead (ifp->connected); node; node = nextnode (node)) | |
229 | { | |
230 | ifc = getdata (node); | |
231 | ||
232 | if (prefix_same (ifc->address, p)) | |
233 | return ifc; | |
234 | } | |
235 | return 0; | |
236 | } | |
237 | ||
238 | void | |
239 | connected_up_ipv6 (struct interface *ifp, struct connected *ifc) | |
240 | { | |
241 | struct prefix_ipv6 p; | |
242 | struct prefix_ipv6 *addr; | |
243 | struct prefix_ipv6 *dest; | |
244 | ||
245 | if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) | |
246 | return; | |
247 | ||
248 | addr = (struct prefix_ipv6 *) ifc->address; | |
249 | dest = (struct prefix_ipv6 *) ifc->destination; | |
250 | ||
251 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
252 | p.family = AF_INET6; | |
253 | p.prefixlen = addr->prefixlen; | |
254 | ||
31a476c7 | 255 | if (if_is_pointopoint (ifp) && dest) |
718e3744 | 256 | { |
257 | if (IN6_IS_ADDR_UNSPECIFIED (&dest->prefix)) | |
258 | p.prefix = addr->prefix; | |
259 | else | |
260 | p.prefix = dest->prefix; | |
261 | } | |
262 | else | |
263 | p.prefix = addr->prefix; | |
264 | ||
265 | /* Apply mask to the network. */ | |
266 | apply_mask_ipv6 (&p); | |
267 | ||
726f9b2b | 268 | #if ! defined (MUSICA) && ! defined (LINUX) |
269 | /* XXX: It is already done by rib_bogus_ipv6 within rib_add_ipv6 */ | |
718e3744 | 270 | if (IN6_IS_ADDR_UNSPECIFIED (&p.prefix)) |
271 | return; | |
726f9b2b | 272 | #endif |
718e3744 | 273 | |
274 | rib_add_ipv6 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0); | |
275 | ||
276 | rib_update (); | |
277 | } | |
278 | ||
279 | /* Add connected IPv6 route to the interface. */ | |
280 | void | |
281 | connected_add_ipv6 (struct interface *ifp, struct in6_addr *addr, | |
fce954f8 | 282 | u_char prefixlen, struct in6_addr *broad) |
718e3744 | 283 | { |
284 | struct prefix_ipv6 *p; | |
285 | struct connected *ifc; | |
286 | struct connected *current; | |
287 | ||
288 | /* Make connected structure. */ | |
289 | ifc = connected_new (); | |
290 | ifc->ifp = ifp; | |
291 | ||
292 | /* Allocate new connected address. */ | |
293 | p = prefix_ipv6_new (); | |
294 | p->family = AF_INET6; | |
295 | IPV6_ADDR_COPY (&p->prefix, addr); | |
296 | p->prefixlen = prefixlen; | |
297 | ifc->address = (struct prefix *) p; | |
298 | ||
299 | /* If there is broadcast or pointopoint address. */ | |
300 | if (broad) | |
301 | { | |
302 | p = prefix_ipv6_new (); | |
303 | p->family = AF_INET6; | |
304 | IPV6_ADDR_COPY (&p->prefix, broad); | |
305 | ifc->destination = (struct prefix *) p; | |
306 | } | |
307 | ||
308 | current = connected_check_ipv6 (ifp, (struct prefix *) ifc->address); | |
309 | if (current) | |
310 | { | |
311 | connected_free (ifc); | |
312 | ifc = current; | |
313 | } | |
314 | else | |
315 | { | |
316 | listnode_add (ifp->connected, ifc); | |
317 | } | |
318 | ||
319 | /* Update interface address information to protocol daemon. */ | |
320 | if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) | |
321 | { | |
322 | SET_FLAG (ifc->conf, ZEBRA_IFC_REAL); | |
323 | ||
324 | zebra_interface_address_add_update (ifp, ifc); | |
325 | ||
326 | if (if_is_up(ifp)) | |
327 | connected_up_ipv6 (ifp, ifc); | |
328 | } | |
329 | } | |
330 | ||
331 | void | |
332 | connected_down_ipv6 (struct interface *ifp, struct connected *ifc) | |
333 | { | |
334 | struct prefix_ipv6 p; | |
335 | struct prefix_ipv6 *addr; | |
336 | struct prefix_ipv6 *dest; | |
337 | ||
338 | if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) | |
339 | return; | |
340 | ||
341 | addr = (struct prefix_ipv6 *) ifc->address; | |
342 | dest = (struct prefix_ipv6 *) ifc->destination; | |
343 | ||
344 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
345 | p.family = AF_INET6; | |
346 | p.prefixlen = addr->prefixlen; | |
347 | ||
31a476c7 | 348 | if (if_is_pointopoint (ifp) && dest) |
718e3744 | 349 | { |
350 | if (IN6_IS_ADDR_UNSPECIFIED (&dest->prefix)) | |
351 | p.prefix = addr->prefix; | |
352 | else | |
353 | p.prefix = dest->prefix; | |
354 | } | |
355 | else | |
356 | p.prefix = addr->prefix; | |
357 | ||
358 | apply_mask_ipv6 (&p); | |
359 | ||
360 | if (IN6_IS_ADDR_UNSPECIFIED (&p.prefix)) | |
361 | return; | |
362 | ||
363 | rib_delete_ipv6 (ZEBRA_ROUTE_CONNECT, 0, &p, NULL, ifp->ifindex, 0); | |
364 | ||
365 | rib_update (); | |
366 | } | |
367 | ||
368 | void | |
369 | connected_delete_ipv6 (struct interface *ifp, struct in6_addr *address, | |
fce954f8 | 370 | u_char prefixlen, struct in6_addr *broad) |
718e3744 | 371 | { |
372 | struct prefix_ipv6 p; | |
373 | struct connected *ifc; | |
374 | ||
375 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
376 | p.family = AF_INET6; | |
377 | memcpy (&p.prefix, address, sizeof (struct in6_addr)); | |
378 | p.prefixlen = prefixlen; | |
379 | ||
380 | ifc = connected_check_ipv6 (ifp, (struct prefix *) &p); | |
381 | if (! ifc) | |
382 | return; | |
383 | ||
384 | /* Update interface address information to protocol daemon. */ | |
385 | if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) | |
386 | { | |
387 | zebra_interface_address_delete_update (ifp, ifc); | |
388 | ||
389 | connected_down_ipv6 (ifp, ifc); | |
390 | ||
391 | UNSET_FLAG (ifc->conf, ZEBRA_IFC_REAL); | |
392 | } | |
393 | ||
eef1fe11 | 394 | listnode_delete (ifp->connected, ifc); |
395 | connected_free (ifc); | |
718e3744 | 396 | } |
397 | #endif /* HAVE_IPV6 */ |