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de9bc7de KS |
1 | /* ns.c 6.1 85/05/30 */ |
2 | ||
3 | #include "param.h" | |
4 | #include "mbuf.h" | |
5 | #include "ioctl.h" | |
6 | #include "protosw.h" | |
7 | #include "socket.h" | |
8 | #include "socketvar.h" | |
9 | #include "uio.h" | |
10 | #include "dir.h" | |
11 | #include "user.h" | |
12 | ||
13 | ||
14 | #include "../net/if.h" | |
15 | #include "../net/route.h" | |
16 | #include "../net/af.h" | |
17 | ||
18 | #include "ns.h" | |
19 | #include "ns_if.h" | |
20 | ||
21 | #ifdef NS | |
22 | ||
23 | struct ns_ifaddr *ns_ifaddr; | |
24 | ||
25 | ns_hash(sns, hp) | |
26 | register struct sockaddr_ns *sns; | |
27 | struct afhash *hp; | |
28 | { | |
29 | register long hash = 0; | |
30 | register u_short *s = sns->sns_addr.x_host.s_host; | |
31 | ||
32 | hp->afh_nethash = ns_netof(sns->sns_addr); | |
33 | hash = *s++; hash <<= 8; hash += *s++; hash <<= 8; hash += *s; | |
34 | hp->afh_hosthash = hash; | |
35 | } | |
36 | ||
37 | ||
38 | ns_netmatch(sns1, sns2) | |
39 | struct sockaddr_ns *sns1, *sns2; | |
40 | { | |
41 | ||
42 | return (ns_netof(sns1->sns_addr) == ns_netof(sns2->sns_addr)); | |
43 | } | |
44 | ||
45 | /* | |
46 | * Generic internet control operations (ioctl's). | |
47 | */ | |
48 | ns_control(so, cmd, data, ifp) | |
49 | struct socket *so; | |
50 | int cmd; | |
51 | caddr_t data; | |
52 | register struct ifnet *ifp; | |
53 | { | |
54 | register struct ifreq *ifr = (struct ifreq *)data; | |
55 | register struct ns_ifaddr *ia; | |
56 | struct ifaddr *ifa; | |
57 | struct mbuf *m; | |
58 | int error; | |
59 | ||
60 | if (!suser()) | |
61 | return (u.u_error); | |
62 | ||
63 | /* | |
64 | * Find address for this interface, if it exists. | |
65 | */ | |
66 | for (ia = ns_ifaddr; ia; ia = ia->ia_next) | |
67 | if (ia->ia_ifp == ifp) | |
68 | break; | |
69 | ||
70 | switch (cmd) { | |
71 | ||
72 | case SIOCGIFADDR: | |
73 | case SIOCGIFBRDADDR: | |
74 | case SIOCGIFDSTADDR: | |
75 | if (ia == (struct ns_ifaddr *)0) | |
76 | return (EADDRNOTAVAIL); | |
77 | break; | |
78 | ||
79 | case SIOCSIFDSTADDR: | |
80 | return (EOPNOTSUPP); | |
81 | ||
82 | case SIOCSIFADDR: | |
83 | if (ia == (struct ns_ifaddr *)0) { | |
84 | m = m_getclr(M_WAIT, MT_IFADDR); | |
85 | if (m == (struct mbuf *)NULL) | |
86 | return (ENOBUFS); | |
87 | if (ia = ns_ifaddr) { | |
88 | for ( ; ia->ia_next; ia = ia->ia_next) | |
89 | ; | |
90 | ia->ia_next = mtod(m, struct ns_ifaddr *); | |
91 | } else | |
92 | ns_ifaddr = mtod(m, struct ns_ifaddr *); | |
93 | ia = mtod(m, struct ns_ifaddr *); | |
94 | if (ifa = ifp->if_addrlist) { | |
95 | for ( ; ifa->ifa_next; ifa = ifa->ifa_next) | |
96 | ; | |
97 | ifa->ifa_next = (struct ifaddr *) ia; | |
98 | } else | |
99 | ifp->if_addrlist = (struct ifaddr *) ia; | |
100 | ia->ia_ifp = ifp; | |
101 | IA_SNS(ia)->sns_family = AF_NS; | |
102 | } | |
103 | break; | |
104 | } | |
105 | ||
106 | switch (cmd) { | |
107 | ||
108 | case SIOCGIFADDR: | |
109 | ifr->ifr_addr = ia->ia_addr; | |
110 | break; | |
111 | ||
112 | case SIOCGIFBRDADDR: | |
113 | if (ia == (struct ns_ifaddr *)0) | |
114 | return (EADDRNOTAVAIL); | |
115 | if ((ifp->if_flags & IFF_BROADCAST) == 0) | |
116 | return (EINVAL); | |
117 | ifr->ifr_dstaddr = ia->ia_broadaddr; | |
118 | break; | |
119 | ||
120 | case SIOCGIFDSTADDR: | |
121 | if (ia == (struct ns_ifaddr *)0) | |
122 | return (EADDRNOTAVAIL); | |
123 | if ((ifp->if_flags & IFF_POINTOPOINT) == 0) | |
124 | return (EINVAL); | |
125 | ifr->ifr_dstaddr = ia->ia_dstaddr; | |
126 | break; | |
127 | ||
128 | case SIOCSIFADDR: | |
129 | return | |
130 | (ns_ifinit(ifp, ia, (struct sockaddr_ns *)&ifr->ifr_addr)); | |
131 | ||
132 | default: | |
133 | if (ifp->if_ioctl == 0) | |
134 | return (EOPNOTSUPP); | |
135 | return ((*ifp->if_ioctl)(ifp, cmd, data)); | |
136 | } | |
137 | return (0); | |
138 | } | |
139 | ||
140 | /* | |
141 | * Initialize an interface's internet address | |
142 | * and routing table entry. | |
143 | */ | |
144 | ns_ifinit(ifp, ia, sns) | |
145 | register struct ifnet *ifp; | |
146 | register struct ns_ifaddr *ia; | |
147 | struct sockaddr_ns *sns; | |
148 | { | |
149 | struct sockaddr_ns netaddr; | |
150 | register union ns_host *h = &(IA_SNS(ia)->sns_addr.x_host); | |
151 | int s = splimp(), error; | |
152 | ||
153 | /* | |
154 | * The convention we shall adopt for naming is that | |
155 | * a supplied address of zero means that "we don't care". | |
156 | * if there is a single interface, use the address of that | |
157 | * interface as our 6 byte host address. | |
158 | * if there are multiple interfaces, use any address already | |
159 | * used. | |
160 | * | |
161 | * If we have gotten into trouble and want to reset back to | |
162 | * virginity, we recognize a request of the broadcast address. | |
163 | */ | |
164 | if (ns_hosteqnh(sns->sns_addr.x_host, ns_broadhost)) { | |
165 | ns_thishost = ns_zerohost; | |
166 | splx(s); | |
167 | return(EINVAL); | |
168 | } | |
169 | ||
170 | /* | |
171 | * Delete any previous route for an old address. | |
172 | */ | |
173 | ||
174 | bzero((caddr_t)&netaddr, sizeof (netaddr)); | |
175 | netaddr.sns_family = AF_NS; | |
176 | netaddr.sns_addr.x_host = ns_broadhost; | |
177 | netaddr.sns_addr.x_net = ia->ia_net; | |
178 | if (ia->ia_flags & IFA_ROUTE) { | |
179 | if ((ifp->if_flags & IFF_POINTOPOINT) == 0) { | |
180 | rtinit((struct sockaddr *)&netaddr, &ia->ia_addr, -1); | |
181 | } else | |
182 | rtinit((struct sockaddr *)&ia->ia_dstaddr, &ia->ia_addr, -1); | |
183 | } | |
184 | ||
185 | /* | |
186 | * Set up new addresses. | |
187 | */ | |
188 | ia->ia_addr = *(struct sockaddr *)sns; | |
189 | ia->ia_net = sns->sns_addr.x_net; | |
190 | netaddr.sns_addr.x_net = ia->ia_net; | |
191 | if (ifp->if_flags & IFF_BROADCAST) { | |
192 | ia->ia_broadaddr = * (struct sockaddr *) &netaddr; | |
193 | } | |
194 | /* | |
195 | * Point to point links are a little touchier -- | |
196 | * We have to have an address of our own first, | |
197 | * and will use the supplied address as that of the other end. | |
198 | */ | |
199 | if (ifp->if_flags & IFF_POINTOPOINT) { | |
200 | struct sockaddr_ns *sns2 = IA_SNS(ia); | |
201 | if (ns_hosteqnh(ns_zerohost,ns_thishost)) | |
202 | return(EINVAL); | |
203 | ia->ia_dstaddr = ia->ia_addr; | |
204 | sns2->sns_addr.x_host = ns_thishost; | |
205 | sns->sns_addr.x_host = ns_thishost; | |
206 | } | |
207 | /* | |
208 | * Give the interface a chance to initialize | |
209 | * if this is its first address, | |
210 | * and to validate the address if necessary. | |
211 | */ | |
212 | ||
213 | if (ns_hosteqnh(ns_thishost, ns_zerohost)) { | |
214 | if (ifp->if_ioctl && | |
215 | (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) { | |
216 | splx(s); | |
217 | return (error); | |
218 | } | |
219 | ns_thishost = *h; | |
220 | } else if (ns_hosteqnh(sns->sns_addr.x_host, ns_zerohost) | |
221 | || ns_hosteqnh(sns->sns_addr.x_host, ns_thishost)) { | |
222 | *h = ns_thishost; | |
223 | if (ifp->if_ioctl && | |
224 | (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) { | |
225 | splx(s); | |
226 | return (error); | |
227 | } | |
228 | if(!ns_hosteqnh(ns_thishost,*h)) { | |
229 | splx(s); | |
230 | return (EINVAL); | |
231 | } | |
232 | } else { | |
233 | splx(s); | |
234 | return(EINVAL); | |
235 | } | |
236 | /* | |
237 | * Add route for the network. | |
238 | */ | |
239 | if ((ifp->if_flags & IFF_POINTOPOINT) == 0) { | |
240 | rtinit((struct sockaddr *)&netaddr, &ia->ia_addr, RTF_UP); | |
241 | } else | |
242 | rtinit((struct sockaddr *)&ia->ia_dstaddr, &ia->ia_addr, | |
243 | RTF_HOST|RTF_UP); | |
244 | ia->ia_flags |= IFA_ROUTE; | |
245 | return(0); | |
246 | } | |
247 | ||
248 | /* | |
249 | * Return address info for specified internet network. | |
250 | */ | |
251 | struct ns_ifaddr * | |
252 | ns_iaonnetof(net) | |
253 | union ns_net net; | |
254 | { | |
255 | register struct ns_ifaddr *ia; | |
256 | ||
257 | #define NtoL(x) (*(long *)(&(x))) | |
258 | for (ia = ns_ifaddr; ia; ia = ia->ia_next) | |
259 | if (NtoL(ia->ia_net) == NtoL(net)) | |
260 | return (ia); | |
261 | return ((struct ns_ifaddr *)0); | |
262 | } | |
263 | #endif |