Commit | Line | Data |
---|---|---|
8ae0e4b4 | 1 | /* |
8b659320 | 2 | * Copyright (c) 1984, 1985 Regents of the University of California. |
8ae0e4b4 KM |
3 | * All rights reserved. The Berkeley software License Agreement |
4 | * specifies the terms and conditions for redistribution. | |
5 | * | |
f1e269d4 | 6 | * @(#)ns.c 6.7 (Berkeley) %G% |
8ae0e4b4 | 7 | */ |
de9bc7de KS |
8 | |
9 | #include "param.h" | |
10 | #include "mbuf.h" | |
11 | #include "ioctl.h" | |
12 | #include "protosw.h" | |
13 | #include "socket.h" | |
14 | #include "socketvar.h" | |
15 | #include "uio.h" | |
16 | #include "dir.h" | |
17 | #include "user.h" | |
18 | ||
19 | ||
20 | #include "../net/if.h" | |
21 | #include "../net/route.h" | |
22 | #include "../net/af.h" | |
23 | ||
24 | #include "ns.h" | |
25 | #include "ns_if.h" | |
26 | ||
27 | #ifdef NS | |
28 | ||
29 | struct ns_ifaddr *ns_ifaddr; | |
30 | ||
31 | ns_hash(sns, hp) | |
32 | register struct sockaddr_ns *sns; | |
33 | struct afhash *hp; | |
34 | { | |
35 | register long hash = 0; | |
36 | register u_short *s = sns->sns_addr.x_host.s_host; | |
f1e269d4 KS |
37 | union { |
38 | union ns_net net_e; | |
39 | long long_e; | |
40 | } net; | |
de9bc7de | 41 | |
f1e269d4 KS |
42 | net.net_e = sns->sns_addr.x_net; |
43 | hp->afh_nethash = net.long_e; | |
de9bc7de KS |
44 | hash = *s++; hash <<= 8; hash += *s++; hash <<= 8; hash += *s; |
45 | hp->afh_hosthash = hash; | |
46 | } | |
47 | ||
48 | ||
49 | ns_netmatch(sns1, sns2) | |
50 | struct sockaddr_ns *sns1, *sns2; | |
51 | { | |
52 | ||
f1e269d4 | 53 | return (ns_neteq(sns1->sns_addr, sns2->sns_addr)); |
de9bc7de KS |
54 | } |
55 | ||
56 | /* | |
57 | * Generic internet control operations (ioctl's). | |
58 | */ | |
f97be0c9 | 59 | /* ARGSUSED */ |
de9bc7de KS |
60 | ns_control(so, cmd, data, ifp) |
61 | struct socket *so; | |
62 | int cmd; | |
63 | caddr_t data; | |
64 | register struct ifnet *ifp; | |
65 | { | |
66 | register struct ifreq *ifr = (struct ifreq *)data; | |
67 | register struct ns_ifaddr *ia; | |
68 | struct ifaddr *ifa; | |
69 | struct mbuf *m; | |
de9bc7de | 70 | |
de9bc7de KS |
71 | /* |
72 | * Find address for this interface, if it exists. | |
73 | */ | |
8b659320 | 74 | if (ifp == 0) |
4353fa68 | 75 | return (EADDRNOTAVAIL); |
de9bc7de KS |
76 | for (ia = ns_ifaddr; ia; ia = ia->ia_next) |
77 | if (ia->ia_ifp == ifp) | |
78 | break; | |
79 | ||
80 | switch (cmd) { | |
81 | ||
82 | case SIOCGIFADDR: | |
4353fa68 KS |
83 | if (ia == (struct ns_ifaddr *)0) |
84 | return (EADDRNOTAVAIL); | |
85 | ifr->ifr_addr = ia->ia_addr; | |
86 | return (0); | |
87 | ||
88 | ||
de9bc7de | 89 | case SIOCGIFBRDADDR: |
4353fa68 KS |
90 | if (ia == (struct ns_ifaddr *)0) |
91 | return (EADDRNOTAVAIL); | |
92 | if ((ifp->if_flags & IFF_BROADCAST) == 0) | |
93 | return (EINVAL); | |
94 | ifr->ifr_dstaddr = ia->ia_broadaddr; | |
95 | return (0); | |
96 | ||
de9bc7de KS |
97 | case SIOCGIFDSTADDR: |
98 | if (ia == (struct ns_ifaddr *)0) | |
99 | return (EADDRNOTAVAIL); | |
4353fa68 KS |
100 | if ((ifp->if_flags & IFF_POINTOPOINT) == 0) |
101 | return (EINVAL); | |
102 | ifr->ifr_dstaddr = ia->ia_dstaddr; | |
103 | return (0); | |
104 | } | |
105 | ||
106 | if (!suser()) | |
107 | return (u.u_error); | |
108 | ||
109 | switch (cmd) { | |
de9bc7de | 110 | |
de9bc7de | 111 | case SIOCSIFADDR: |
8b659320 | 112 | case SIOCSIFDSTADDR: |
de9bc7de KS |
113 | if (ia == (struct ns_ifaddr *)0) { |
114 | m = m_getclr(M_WAIT, MT_IFADDR); | |
115 | if (m == (struct mbuf *)NULL) | |
116 | return (ENOBUFS); | |
117 | if (ia = ns_ifaddr) { | |
118 | for ( ; ia->ia_next; ia = ia->ia_next) | |
119 | ; | |
120 | ia->ia_next = mtod(m, struct ns_ifaddr *); | |
121 | } else | |
122 | ns_ifaddr = mtod(m, struct ns_ifaddr *); | |
123 | ia = mtod(m, struct ns_ifaddr *); | |
124 | if (ifa = ifp->if_addrlist) { | |
125 | for ( ; ifa->ifa_next; ifa = ifa->ifa_next) | |
126 | ; | |
127 | ifa->ifa_next = (struct ifaddr *) ia; | |
128 | } else | |
129 | ifp->if_addrlist = (struct ifaddr *) ia; | |
130 | ia->ia_ifp = ifp; | |
131 | IA_SNS(ia)->sns_family = AF_NS; | |
132 | } | |
8b659320 KS |
133 | } |
134 | ||
135 | switch (cmd) { | |
136 | ||
137 | case SIOCSIFDSTADDR: | |
138 | if ((ifp->if_flags & IFF_POINTOPOINT) == 0) | |
139 | return (EINVAL); | |
140 | if (ia->ia_flags & IFA_ROUTE) { | |
141 | rtinit(&ia->ia_dstaddr, &ia->ia_addr, | |
142 | (int)SIOCDELRT, RTF_HOST); | |
143 | ia->ia_flags &= ~IFA_ROUTE; | |
144 | } | |
145 | if (ifp->if_ioctl) { | |
146 | int error = (*ifp->if_ioctl)(ifp, SIOCSIFDSTADDR, ia); | |
147 | if (error) | |
148 | return (error); | |
149 | } | |
150 | ia->ia_dstaddr = ifr->ifr_dstaddr; | |
151 | return (0); | |
152 | ||
153 | case SIOCSIFADDR: | |
de9bc7de KS |
154 | return |
155 | (ns_ifinit(ifp, ia, (struct sockaddr_ns *)&ifr->ifr_addr)); | |
156 | ||
157 | default: | |
158 | if (ifp->if_ioctl == 0) | |
159 | return (EOPNOTSUPP); | |
160 | return ((*ifp->if_ioctl)(ifp, cmd, data)); | |
161 | } | |
de9bc7de KS |
162 | } |
163 | ||
164 | /* | |
165 | * Initialize an interface's internet address | |
166 | * and routing table entry. | |
167 | */ | |
168 | ns_ifinit(ifp, ia, sns) | |
169 | register struct ifnet *ifp; | |
170 | register struct ns_ifaddr *ia; | |
171 | struct sockaddr_ns *sns; | |
172 | { | |
173 | struct sockaddr_ns netaddr; | |
174 | register union ns_host *h = &(IA_SNS(ia)->sns_addr.x_host); | |
175 | int s = splimp(), error; | |
176 | ||
177 | /* | |
178 | * The convention we shall adopt for naming is that | |
179 | * a supplied address of zero means that "we don't care". | |
180 | * if there is a single interface, use the address of that | |
181 | * interface as our 6 byte host address. | |
182 | * if there are multiple interfaces, use any address already | |
183 | * used. | |
184 | * | |
185 | * If we have gotten into trouble and want to reset back to | |
186 | * virginity, we recognize a request of the broadcast address. | |
187 | */ | |
188 | if (ns_hosteqnh(sns->sns_addr.x_host, ns_broadhost)) { | |
189 | ns_thishost = ns_zerohost; | |
190 | splx(s); | |
8b659320 | 191 | return (0); |
de9bc7de KS |
192 | } |
193 | ||
194 | /* | |
195 | * Delete any previous route for an old address. | |
196 | */ | |
de9bc7de KS |
197 | bzero((caddr_t)&netaddr, sizeof (netaddr)); |
198 | netaddr.sns_family = AF_NS; | |
199 | netaddr.sns_addr.x_host = ns_broadhost; | |
200 | netaddr.sns_addr.x_net = ia->ia_net; | |
201 | if (ia->ia_flags & IFA_ROUTE) { | |
202 | if ((ifp->if_flags & IFF_POINTOPOINT) == 0) { | |
8b659320 KS |
203 | rtinit((struct sockaddr *)&netaddr, &ia->ia_addr, |
204 | (int)SIOCDELRT, 0); | |
de9bc7de | 205 | } else |
8b659320 KS |
206 | rtinit(&ia->ia_dstaddr, &ia->ia_addr, |
207 | (int)SIOCDELRT, RTF_HOST); | |
de9bc7de KS |
208 | } |
209 | ||
210 | /* | |
211 | * Set up new addresses. | |
212 | */ | |
213 | ia->ia_addr = *(struct sockaddr *)sns; | |
214 | ia->ia_net = sns->sns_addr.x_net; | |
215 | netaddr.sns_addr.x_net = ia->ia_net; | |
216 | if (ifp->if_flags & IFF_BROADCAST) { | |
217 | ia->ia_broadaddr = * (struct sockaddr *) &netaddr; | |
218 | } | |
8b659320 | 219 | |
de9bc7de KS |
220 | /* |
221 | * Give the interface a chance to initialize | |
222 | * if this is its first address, | |
223 | * and to validate the address if necessary. | |
224 | */ | |
de9bc7de KS |
225 | if (ns_hosteqnh(ns_thishost, ns_zerohost)) { |
226 | if (ifp->if_ioctl && | |
227 | (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) { | |
228 | splx(s); | |
229 | return (error); | |
230 | } | |
231 | ns_thishost = *h; | |
232 | } else if (ns_hosteqnh(sns->sns_addr.x_host, ns_zerohost) | |
233 | || ns_hosteqnh(sns->sns_addr.x_host, ns_thishost)) { | |
234 | *h = ns_thishost; | |
235 | if (ifp->if_ioctl && | |
236 | (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) { | |
237 | splx(s); | |
238 | return (error); | |
239 | } | |
8b659320 | 240 | if (!ns_hosteqnh(ns_thishost,*h)) { |
de9bc7de KS |
241 | splx(s); |
242 | return (EINVAL); | |
243 | } | |
244 | } else { | |
245 | splx(s); | |
8b659320 | 246 | return (EINVAL); |
de9bc7de | 247 | } |
8b659320 | 248 | |
de9bc7de KS |
249 | /* |
250 | * Add route for the network. | |
251 | */ | |
8b659320 KS |
252 | if (ifp->if_flags & IFF_POINTOPOINT) |
253 | rtinit(&ia->ia_dstaddr, &ia->ia_addr, (int)SIOCADDRT, | |
de9bc7de | 254 | RTF_HOST|RTF_UP); |
8b659320 KS |
255 | else |
256 | rtinit(&ia->ia_broadaddr, &ia->ia_addr, (int)SIOCADDRT, | |
257 | RTF_UP); | |
de9bc7de | 258 | ia->ia_flags |= IFA_ROUTE; |
8b659320 | 259 | return (0); |
de9bc7de KS |
260 | } |
261 | ||
262 | /* | |
263 | * Return address info for specified internet network. | |
264 | */ | |
265 | struct ns_ifaddr * | |
46aa06a9 KS |
266 | ns_iaonnetof(dst) |
267 | register struct ns_addr *dst; | |
de9bc7de KS |
268 | { |
269 | register struct ns_ifaddr *ia; | |
46aa06a9 | 270 | register struct ns_addr *compare; |
8b659320 KS |
271 | register struct ifnet *ifp; |
272 | struct ns_ifaddr *ia_maybe = 0; | |
f1e269d4 | 273 | union ns_net net = dst->x_net; |
de9bc7de | 274 | |
46aa06a9 | 275 | for (ia = ns_ifaddr; ia; ia = ia->ia_next) { |
8b659320 KS |
276 | if (ifp = ia->ia_ifp) { |
277 | if (ifp->if_flags & IFF_POINTOPOINT) { | |
278 | compare = &satons_addr(ia->ia_dstaddr); | |
279 | if (ns_hosteq(*dst, *compare)) | |
280 | return (ia); | |
f1e269d4 | 281 | if (ns_neteqnn(net, ia->ia_net)) |
8b659320 KS |
282 | ia_maybe = ia; |
283 | } else { | |
f1e269d4 | 284 | if (ns_neteqnn(net, ia->ia_net)) |
46aa06a9 KS |
285 | return (ia); |
286 | } | |
287 | } | |
288 | } | |
289 | return (ia_maybe); | |
de9bc7de KS |
290 | } |
291 | #endif |