Commit | Line | Data |
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8ae0e4b4 | 1 | /* |
99315dca KB |
2 | * Copyright (c) 1984, 1985, 1986, 1987, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
8ae0e4b4 | 4 | * |
dbf0c423 | 5 | * %sccs.include.redist.c% |
240edf1f | 6 | * |
99315dca | 7 | * @(#)ns.c 8.1 (Berkeley) %G% |
8ae0e4b4 | 8 | */ |
de9bc7de | 9 | |
5548a02f KB |
10 | #include <sys/param.h> |
11 | #include <sys/mbuf.h> | |
12 | #include <sys/ioctl.h> | |
13 | #include <sys/protosw.h> | |
14 | #include <sys/errno.h> | |
15 | #include <sys/socket.h> | |
16 | #include <sys/socketvar.h> | |
de9bc7de | 17 | |
5548a02f KB |
18 | #include <net/if.h> |
19 | #include <net/route.h> | |
20 | #include <net/af.h> | |
de9bc7de | 21 | |
5548a02f KB |
22 | #include <netns/ns.h> |
23 | #include <netns/ns_if.h> | |
de9bc7de KS |
24 | |
25 | #ifdef NS | |
26 | ||
27 | struct ns_ifaddr *ns_ifaddr; | |
4dcdd98e KS |
28 | int ns_interfaces; |
29 | extern struct sockaddr_ns ns_netmask, ns_hostmask; | |
de9bc7de KS |
30 | |
31 | /* | |
32 | * Generic internet control operations (ioctl's). | |
33 | */ | |
f97be0c9 | 34 | /* ARGSUSED */ |
de9bc7de KS |
35 | ns_control(so, cmd, data, ifp) |
36 | struct socket *so; | |
37 | int cmd; | |
38 | caddr_t data; | |
39 | register struct ifnet *ifp; | |
40 | { | |
41 | register struct ifreq *ifr = (struct ifreq *)data; | |
4dcdd98e | 42 | register struct ns_aliasreq *ifra = (struct ns_aliasreq *)data; |
de9bc7de KS |
43 | register struct ns_ifaddr *ia; |
44 | struct ifaddr *ifa; | |
4dcdd98e | 45 | struct ns_ifaddr *oia; |
dfe62cc7 | 46 | int error, dstIsNew, hostIsNew; |
de9bc7de | 47 | |
de9bc7de KS |
48 | /* |
49 | * Find address for this interface, if it exists. | |
50 | */ | |
8b659320 | 51 | if (ifp == 0) |
4353fa68 | 52 | return (EADDRNOTAVAIL); |
de9bc7de KS |
53 | for (ia = ns_ifaddr; ia; ia = ia->ia_next) |
54 | if (ia->ia_ifp == ifp) | |
55 | break; | |
56 | ||
57 | switch (cmd) { | |
58 | ||
59 | case SIOCGIFADDR: | |
4353fa68 KS |
60 | if (ia == (struct ns_ifaddr *)0) |
61 | return (EADDRNOTAVAIL); | |
4dcdd98e | 62 | *(struct sockaddr_ns *)&ifr->ifr_addr = ia->ia_addr; |
4353fa68 KS |
63 | return (0); |
64 | ||
65 | ||
de9bc7de | 66 | case SIOCGIFBRDADDR: |
4353fa68 KS |
67 | if (ia == (struct ns_ifaddr *)0) |
68 | return (EADDRNOTAVAIL); | |
69 | if ((ifp->if_flags & IFF_BROADCAST) == 0) | |
70 | return (EINVAL); | |
4dcdd98e | 71 | *(struct sockaddr_ns *)&ifr->ifr_dstaddr = ia->ia_broadaddr; |
4353fa68 KS |
72 | return (0); |
73 | ||
de9bc7de KS |
74 | case SIOCGIFDSTADDR: |
75 | if (ia == (struct ns_ifaddr *)0) | |
76 | return (EADDRNOTAVAIL); | |
4353fa68 KS |
77 | if ((ifp->if_flags & IFF_POINTOPOINT) == 0) |
78 | return (EINVAL); | |
4dcdd98e | 79 | *(struct sockaddr_ns *)&ifr->ifr_dstaddr = ia->ia_dstaddr; |
4353fa68 KS |
80 | return (0); |
81 | } | |
82 | ||
f3841c44 KS |
83 | if ((so->so_state & SS_PRIV) == 0) |
84 | return (EPERM); | |
4353fa68 KS |
85 | |
86 | switch (cmd) { | |
4dcdd98e KS |
87 | case SIOCAIFADDR: |
88 | case SIOCDIFADDR: | |
89 | if (ifra->ifra_addr.sns_family == AF_NS) | |
90 | for (oia = ia; ia; ia = ia->ia_next) { | |
91 | if (ia->ia_ifp == ifp && | |
92 | ns_neteq(ia->ia_addr.sns_addr, | |
93 | ifra->ifra_addr.sns_addr)) | |
94 | break; | |
95 | } | |
96 | if (cmd == SIOCDIFADDR && ia == 0) | |
97 | return (EADDRNOTAVAIL); | |
98 | /* FALLTHROUGH */ | |
de9bc7de | 99 | |
de9bc7de | 100 | case SIOCSIFADDR: |
8b659320 | 101 | case SIOCSIFDSTADDR: |
de9bc7de | 102 | if (ia == (struct ns_ifaddr *)0) { |
b965365f KS |
103 | oia = (struct ns_ifaddr *) |
104 | malloc(sizeof *ia, M_IFADDR, M_WAITOK); | |
105 | if (oia == (struct ns_ifaddr *)NULL) | |
de9bc7de | 106 | return (ENOBUFS); |
c4edeb45 | 107 | bzero((caddr_t)oia, sizeof(*oia)); |
de9bc7de KS |
108 | if (ia = ns_ifaddr) { |
109 | for ( ; ia->ia_next; ia = ia->ia_next) | |
110 | ; | |
b965365f | 111 | ia->ia_next = oia; |
de9bc7de | 112 | } else |
b965365f KS |
113 | ns_ifaddr = oia; |
114 | ia = oia; | |
de9bc7de KS |
115 | if (ifa = ifp->if_addrlist) { |
116 | for ( ; ifa->ifa_next; ifa = ifa->ifa_next) | |
117 | ; | |
118 | ifa->ifa_next = (struct ifaddr *) ia; | |
119 | } else | |
120 | ifp->if_addrlist = (struct ifaddr *) ia; | |
121 | ia->ia_ifp = ifp; | |
4dcdd98e KS |
122 | ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr; |
123 | ||
124 | ia->ia_ifa.ifa_netmask = | |
125 | (struct sockaddr *)&ns_netmask; | |
126 | ||
127 | ia->ia_ifa.ifa_dstaddr = | |
128 | (struct sockaddr *)&ia->ia_dstaddr; | |
129 | if (ifp->if_flags & IFF_BROADCAST) { | |
130 | ia->ia_broadaddr.sns_family = AF_NS; | |
131 | ia->ia_broadaddr.sns_len = sizeof(ia->ia_addr); | |
132 | ia->ia_broadaddr.sns_addr.x_host = ns_broadhost; | |
133 | } | |
134 | ns_interfaces++; | |
de9bc7de | 135 | } |
8b659320 KS |
136 | } |
137 | ||
138 | switch (cmd) { | |
4dcdd98e | 139 | int error; |
8b659320 KS |
140 | |
141 | case SIOCSIFDSTADDR: | |
142 | if ((ifp->if_flags & IFF_POINTOPOINT) == 0) | |
143 | return (EINVAL); | |
144 | if (ia->ia_flags & IFA_ROUTE) { | |
4dcdd98e | 145 | rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST); |
8b659320 KS |
146 | ia->ia_flags &= ~IFA_ROUTE; |
147 | } | |
148 | if (ifp->if_ioctl) { | |
4dcdd98e | 149 | error = (*ifp->if_ioctl)(ifp, SIOCSIFDSTADDR, ia); |
8b659320 KS |
150 | if (error) |
151 | return (error); | |
152 | } | |
4dcdd98e | 153 | *(struct sockaddr *)&ia->ia_dstaddr = ifr->ifr_dstaddr; |
8b659320 KS |
154 | return (0); |
155 | ||
156 | case SIOCSIFADDR: | |
4dcdd98e KS |
157 | return (ns_ifinit(ifp, ia, |
158 | (struct sockaddr_ns *)&ifr->ifr_addr, 1)); | |
159 | ||
160 | case SIOCDIFADDR: | |
161 | ns_ifscrub(ifp, ia); | |
162 | if ((ifa = ifp->if_addrlist) == (struct ifaddr *)ia) | |
163 | ifp->if_addrlist = ifa->ifa_next; | |
164 | else { | |
165 | while (ifa->ifa_next && | |
166 | (ifa->ifa_next != (struct ifaddr *)ia)) | |
167 | ifa = ifa->ifa_next; | |
168 | if (ifa->ifa_next) | |
169 | ifa->ifa_next = ((struct ifaddr *)ia)->ifa_next; | |
170 | else | |
171 | printf("Couldn't unlink nsifaddr from ifp\n"); | |
172 | } | |
173 | oia = ia; | |
174 | if (oia == (ia = ns_ifaddr)) { | |
175 | ns_ifaddr = ia->ia_next; | |
176 | } else { | |
177 | while (ia->ia_next && (ia->ia_next != oia)) { | |
178 | ia = ia->ia_next; | |
179 | } | |
180 | if (ia->ia_next) | |
181 | ia->ia_next = oia->ia_next; | |
182 | else | |
183 | printf("Didn't unlink nsifadr from list\n"); | |
184 | } | |
b965365f | 185 | IFAFREE((&oia->ia_ifa)); |
4dcdd98e KS |
186 | if (0 == --ns_interfaces) { |
187 | /* | |
188 | * We reset to virginity and start all over again | |
189 | */ | |
190 | ns_thishost = ns_zerohost; | |
191 | } | |
192 | return (0); | |
193 | ||
194 | case SIOCAIFADDR: | |
195 | dstIsNew = 0; hostIsNew = 1; | |
196 | if (ia->ia_addr.sns_family == AF_NS) { | |
197 | if (ifra->ifra_addr.sns_len == 0) { | |
198 | ifra->ifra_addr = ia->ia_addr; | |
199 | hostIsNew = 0; | |
200 | } else if (ns_neteq(ifra->ifra_addr.sns_addr, | |
201 | ia->ia_addr.sns_addr)) | |
202 | hostIsNew = 0; | |
203 | } | |
204 | if ((ifp->if_flags & IFF_POINTOPOINT) && | |
205 | (ifra->ifra_dstaddr.sns_family == AF_NS)) { | |
206 | if (hostIsNew == 0) | |
207 | ns_ifscrub(ifp, ia); | |
208 | ia->ia_dstaddr = ifra->ifra_dstaddr; | |
209 | dstIsNew = 1; | |
210 | } | |
211 | if (ifra->ifra_addr.sns_family == AF_NS && | |
212 | (hostIsNew || dstIsNew)) | |
213 | error = ns_ifinit(ifp, ia, &ifra->ifra_addr, 0); | |
214 | return (error); | |
de9bc7de KS |
215 | |
216 | default: | |
217 | if (ifp->if_ioctl == 0) | |
218 | return (EOPNOTSUPP); | |
219 | return ((*ifp->if_ioctl)(ifp, cmd, data)); | |
220 | } | |
de9bc7de KS |
221 | } |
222 | ||
4dcdd98e KS |
223 | /* |
224 | * Delete any previous route for an old address. | |
225 | */ | |
226 | ns_ifscrub(ifp, ia) | |
227 | register struct ifnet *ifp; | |
228 | register struct ns_ifaddr *ia; | |
229 | { | |
230 | if (ia->ia_flags & IFA_ROUTE) { | |
231 | if (ifp->if_flags & IFF_POINTOPOINT) { | |
232 | rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST); | |
233 | } else | |
234 | rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0); | |
235 | ia->ia_flags &= ~IFA_ROUTE; | |
236 | } | |
237 | } | |
de9bc7de KS |
238 | /* |
239 | * Initialize an interface's internet address | |
240 | * and routing table entry. | |
241 | */ | |
4dcdd98e | 242 | ns_ifinit(ifp, ia, sns, scrub) |
de9bc7de KS |
243 | register struct ifnet *ifp; |
244 | register struct ns_ifaddr *ia; | |
4dcdd98e | 245 | register struct sockaddr_ns *sns; |
de9bc7de | 246 | { |
4dcdd98e KS |
247 | struct sockaddr_ns oldaddr; |
248 | register union ns_host *h = &ia->ia_addr.sns_addr.x_host; | |
de9bc7de KS |
249 | int s = splimp(), error; |
250 | ||
4dcdd98e KS |
251 | /* |
252 | * Set up new addresses. | |
253 | */ | |
254 | oldaddr = ia->ia_addr; | |
255 | ia->ia_addr = *sns; | |
de9bc7de KS |
256 | /* |
257 | * The convention we shall adopt for naming is that | |
258 | * a supplied address of zero means that "we don't care". | |
259 | * if there is a single interface, use the address of that | |
260 | * interface as our 6 byte host address. | |
261 | * if there are multiple interfaces, use any address already | |
262 | * used. | |
263 | * | |
de9bc7de KS |
264 | * Give the interface a chance to initialize |
265 | * if this is its first address, | |
266 | * and to validate the address if necessary. | |
267 | */ | |
de9bc7de KS |
268 | if (ns_hosteqnh(ns_thishost, ns_zerohost)) { |
269 | if (ifp->if_ioctl && | |
270 | (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) { | |
4dcdd98e | 271 | ia->ia_addr = oldaddr; |
de9bc7de KS |
272 | splx(s); |
273 | return (error); | |
274 | } | |
275 | ns_thishost = *h; | |
276 | } else if (ns_hosteqnh(sns->sns_addr.x_host, ns_zerohost) | |
277 | || ns_hosteqnh(sns->sns_addr.x_host, ns_thishost)) { | |
278 | *h = ns_thishost; | |
279 | if (ifp->if_ioctl && | |
280 | (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) { | |
4dcdd98e | 281 | ia->ia_addr = oldaddr; |
de9bc7de KS |
282 | splx(s); |
283 | return (error); | |
284 | } | |
8b659320 | 285 | if (!ns_hosteqnh(ns_thishost,*h)) { |
4dcdd98e | 286 | ia->ia_addr = oldaddr; |
de9bc7de KS |
287 | splx(s); |
288 | return (EINVAL); | |
289 | } | |
290 | } else { | |
4dcdd98e | 291 | ia->ia_addr = oldaddr; |
de9bc7de | 292 | splx(s); |
8b659320 | 293 | return (EINVAL); |
de9bc7de | 294 | } |
e1d345b7 | 295 | ia->ia_ifa.ifa_metric = ifp->if_metric; |
de9bc7de KS |
296 | /* |
297 | * Add route for the network. | |
298 | */ | |
4dcdd98e KS |
299 | if (scrub) { |
300 | ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr; | |
301 | ns_ifscrub(ifp, ia); | |
302 | ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr; | |
303 | } | |
8b659320 | 304 | if (ifp->if_flags & IFF_POINTOPOINT) |
4dcdd98e KS |
305 | rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP); |
306 | else { | |
e0737012 | 307 | ia->ia_broadaddr.sns_addr.x_net = ia->ia_addr.sns_addr.x_net; |
4dcdd98e KS |
308 | rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP); |
309 | } | |
de9bc7de | 310 | ia->ia_flags |= IFA_ROUTE; |
8b659320 | 311 | return (0); |
de9bc7de KS |
312 | } |
313 | ||
314 | /* | |
315 | * Return address info for specified internet network. | |
316 | */ | |
317 | struct ns_ifaddr * | |
46aa06a9 KS |
318 | ns_iaonnetof(dst) |
319 | register struct ns_addr *dst; | |
de9bc7de KS |
320 | { |
321 | register struct ns_ifaddr *ia; | |
46aa06a9 | 322 | register struct ns_addr *compare; |
8b659320 KS |
323 | register struct ifnet *ifp; |
324 | struct ns_ifaddr *ia_maybe = 0; | |
f1e269d4 | 325 | union ns_net net = dst->x_net; |
de9bc7de | 326 | |
46aa06a9 | 327 | for (ia = ns_ifaddr; ia; ia = ia->ia_next) { |
8b659320 KS |
328 | if (ifp = ia->ia_ifp) { |
329 | if (ifp->if_flags & IFF_POINTOPOINT) { | |
330 | compare = &satons_addr(ia->ia_dstaddr); | |
331 | if (ns_hosteq(*dst, *compare)) | |
332 | return (ia); | |
e0737012 | 333 | if (ns_neteqnn(net, ia->ia_addr.sns_addr.x_net)) |
8b659320 KS |
334 | ia_maybe = ia; |
335 | } else { | |
e0737012 | 336 | if (ns_neteqnn(net, ia->ia_addr.sns_addr.x_net)) |
46aa06a9 KS |
337 | return (ia); |
338 | } | |
339 | } | |
340 | } | |
341 | return (ia_maybe); | |
de9bc7de KS |
342 | } |
343 | #endif |