Commit | Line | Data |
---|---|---|
71fb71a3 | 1 | /* raw_usrreq.c 4.29 83/06/30 */ |
8df9431e BJ |
2 | |
3 | #include "../h/param.h" | |
4 | #include "../h/mbuf.h" | |
94a62155 | 5 | #include "../h/protosw.h" |
8df9431e BJ |
6 | #include "../h/socket.h" |
7 | #include "../h/socketvar.h" | |
f4d55810 SL |
8 | #include "../h/errno.h" |
9 | ||
8df9431e | 10 | #include "../net/if.h" |
71fb71a3 | 11 | #include "../net/route.h" |
14fa60f2 | 12 | #include "../net/netisr.h" |
94a62155 | 13 | #include "../net/raw_cb.h" |
f4d55810 SL |
14 | |
15 | #include "../vax/mtpr.h" | |
94a62155 BJ |
16 | |
17 | /* | |
18 | * Initialize raw connection block q. | |
1e977657 | 19 | */ |
94a62155 BJ |
20 | raw_init() |
21 | { | |
1e977657 | 22 | |
94a62155 | 23 | rawcb.rcb_next = rawcb.rcb_prev = &rawcb; |
1e977657 | 24 | rawintrq.ifq_maxlen = IFQ_MAXLEN; |
94a62155 | 25 | } |
8df9431e BJ |
26 | |
27 | /* | |
28 | * Raw protocol interface. | |
29 | */ | |
02122dcc | 30 | raw_input(m0, proto, src, dst) |
94a62155 | 31 | struct mbuf *m0; |
126472ab | 32 | struct sockproto *proto; |
02122dcc | 33 | struct sockaddr *src, *dst; |
8df9431e | 34 | { |
94a62155 BJ |
35 | register struct mbuf *m; |
36 | struct raw_header *rh; | |
8df9431e BJ |
37 | int s; |
38 | ||
94a62155 BJ |
39 | /* |
40 | * Rip off an mbuf for a generic header. | |
41 | */ | |
cce93e4b | 42 | m = m_get(M_DONTWAIT, MT_HEADER); |
94a62155 BJ |
43 | if (m == 0) { |
44 | m_freem(m0); | |
45 | return; | |
46 | } | |
47 | m->m_next = m0; | |
94a62155 BJ |
48 | m->m_len = sizeof(struct raw_header); |
49 | rh = mtod(m, struct raw_header *); | |
126472ab SL |
50 | rh->raw_dst = *dst; |
51 | rh->raw_src = *src; | |
52 | rh->raw_proto = *proto; | |
94a62155 BJ |
53 | |
54 | /* | |
55 | * Header now contains enough info to decide | |
56 | * which socket to place packet in (if any). | |
57 | * Queue it up for the raw protocol process | |
58 | * running at software interrupt level. | |
59 | */ | |
8df9431e | 60 | s = splimp(); |
1e977657 BJ |
61 | if (IF_QFULL(&rawintrq)) |
62 | m_freem(m); | |
63 | else | |
64 | IF_ENQUEUE(&rawintrq, m); | |
8df9431e | 65 | splx(s); |
9c8692e9 | 66 | schednetisr(NETISR_RAW); |
8df9431e BJ |
67 | } |
68 | ||
94a62155 BJ |
69 | /* |
70 | * Raw protocol input routine. Process packets entered | |
71 | * into the queue at interrupt time. Find the socket | |
72 | * associated with the packet(s) and move them over. If | |
73 | * nothing exists for this packet, drop it. | |
74 | */ | |
8df9431e BJ |
75 | rawintr() |
76 | { | |
77 | int s; | |
78 | struct mbuf *m; | |
94a62155 | 79 | register struct rawcb *rp; |
126472ab | 80 | register struct protosw *lproto; |
02122dcc | 81 | register struct raw_header *rh; |
94a62155 | 82 | struct socket *last; |
8df9431e | 83 | |
8df9431e BJ |
84 | next: |
85 | s = splimp(); | |
8df9431e BJ |
86 | IF_DEQUEUE(&rawintrq, m); |
87 | splx(s); | |
88 | if (m == 0) | |
89 | return; | |
126472ab | 90 | rh = mtod(m, struct raw_header *); |
94a62155 BJ |
91 | last = 0; |
92 | for (rp = rawcb.rcb_next; rp != &rawcb; rp = rp->rcb_next) { | |
126472ab SL |
93 | lproto = rp->rcb_socket->so_proto; |
94 | if (lproto->pr_family != rh->raw_proto.sp_family) | |
94a62155 | 95 | continue; |
126472ab SL |
96 | if (lproto->pr_protocol && |
97 | lproto->pr_protocol != rh->raw_proto.sp_protocol) | |
98 | continue; | |
94a62155 BJ |
99 | /* |
100 | * We assume the lower level routines have | |
101 | * placed the address in a canonical format | |
126472ab | 102 | * suitable for a structure comparison. |
94a62155 | 103 | */ |
02122dcc SL |
104 | #define equal(a1, a2) \ |
105 | (bcmp((caddr_t)&(a1), (caddr_t)&(a2), sizeof (struct sockaddr)) == 0) | |
126472ab | 106 | if ((rp->rcb_flags & RAW_LADDR) && |
02122dcc | 107 | !equal(rp->rcb_laddr, rh->raw_dst)) |
126472ab SL |
108 | continue; |
109 | if ((rp->rcb_flags & RAW_FADDR) && | |
02122dcc | 110 | !equal(rp->rcb_faddr, rh->raw_src)) |
94a62155 | 111 | continue; |
94a62155 BJ |
112 | if (last) { |
113 | struct mbuf *n; | |
f832270b | 114 | if ((n = m_copy(m->m_next, 0, (int)M_COPYALL)) == 0) |
94a62155 | 115 | goto nospace; |
9e9695c7 SL |
116 | if (sbappendaddr(&last->so_rcv, &rh->raw_src, |
117 | n, (struct mbuf *)0) == 0) { | |
126472ab | 118 | /* should notify about lost packet */ |
faad37c0 SL |
119 | m_freem(n); |
120 | goto nospace; | |
121 | } | |
94a62155 BJ |
122 | sorwakeup(last); |
123 | } | |
124 | nospace: | |
126472ab | 125 | last = rp->rcb_socket; |
94a62155 | 126 | } |
72e4f44e SL |
127 | if (last) { |
128 | m = m_free(m); /* header */ | |
9e9695c7 SL |
129 | if (sbappendaddr(&last->so_rcv, &rh->raw_src, |
130 | m, (struct mbuf *)0) == 0) | |
72e4f44e SL |
131 | goto drop; |
132 | sorwakeup(last); | |
133 | goto next; | |
134 | } | |
8df9431e BJ |
135 | drop: |
136 | m_freem(m); | |
137 | goto next; | |
138 | } | |
139 | ||
a1edc12b | 140 | /*ARGSUSED*/ |
72e4f44e SL |
141 | raw_ctlinput(cmd, arg) |
142 | int cmd; | |
143 | caddr_t arg; | |
144 | { | |
39674d5f SL |
145 | |
146 | if (cmd < 0 || cmd > PRC_NCMDS) | |
147 | return; | |
a1edc12b | 148 | /* INCOMPLETE */ |
72e4f44e SL |
149 | } |
150 | ||
8df9431e | 151 | /*ARGSUSED*/ |
9e9695c7 | 152 | raw_usrreq(so, req, m, nam, rights) |
8df9431e BJ |
153 | struct socket *so; |
154 | int req; | |
9e9695c7 | 155 | struct mbuf *m, *nam, *rights; |
8df9431e | 156 | { |
94a62155 | 157 | register struct rawcb *rp = sotorawcb(so); |
9e9695c7 | 158 | register int error = 0; |
94a62155 | 159 | |
9e9695c7 SL |
160 | if (rights && rights->m_len) { |
161 | error = EOPNOTSUPP; | |
162 | goto release; | |
163 | } | |
164 | if (rp == 0 && req != PRU_ATTACH) { | |
165 | error = EINVAL; | |
166 | goto release; | |
167 | } | |
94a62155 BJ |
168 | switch (req) { |
169 | ||
170 | /* | |
171 | * Allocate a raw control block and fill in the | |
172 | * necessary info to allow packets to be routed to | |
173 | * the appropriate raw interface routine. | |
174 | */ | |
175 | case PRU_ATTACH: | |
9e9695c7 SL |
176 | if ((so->so_state & SS_PRIV) == 0) { |
177 | error = EACCES; | |
4945768c | 178 | break; |
9e9695c7 SL |
179 | } |
180 | if (rp) { | |
181 | error = EINVAL; | |
4945768c | 182 | break; |
9e9695c7 | 183 | } |
14fa60f2 | 184 | error = raw_attach(so); |
94a62155 BJ |
185 | break; |
186 | ||
187 | /* | |
188 | * Destroy state just before socket deallocation. | |
189 | * Flush data or not depending on the options. | |
190 | */ | |
191 | case PRU_DETACH: | |
9e9695c7 SL |
192 | if (rp == 0) { |
193 | error = ENOTCONN; | |
4945768c | 194 | break; |
9e9695c7 | 195 | } |
94a62155 BJ |
196 | raw_detach(rp); |
197 | break; | |
198 | ||
199 | /* | |
200 | * If a socket isn't bound to a single address, | |
201 | * the raw input routine will hand it anything | |
202 | * within that protocol family (assuming there's | |
203 | * nothing else around it should go to). | |
204 | */ | |
205 | case PRU_CONNECT: | |
9e9695c7 SL |
206 | if (rp->rcb_flags & RAW_FADDR) { |
207 | error = EISCONN; | |
4945768c | 208 | break; |
9e9695c7 | 209 | } |
14fa60f2 | 210 | raw_connaddr(rp, nam); |
94a62155 BJ |
211 | soisconnected(so); |
212 | break; | |
213 | ||
4945768c SL |
214 | case PRU_CONNECT2: |
215 | error = EOPNOTSUPP; | |
216 | goto release; | |
217 | ||
9e9695c7 SL |
218 | case PRU_BIND: |
219 | if (rp->rcb_flags & RAW_LADDR) { | |
220 | error = EINVAL; /* XXX */ | |
4945768c | 221 | break; |
9e9695c7 SL |
222 | } |
223 | error = raw_bind(so, nam); | |
224 | break; | |
225 | ||
94a62155 | 226 | case PRU_DISCONNECT: |
9e9695c7 SL |
227 | if ((rp->rcb_flags & RAW_FADDR) == 0) { |
228 | error = ENOTCONN; | |
4945768c | 229 | break; |
9e9695c7 | 230 | } |
71fb71a3 SL |
231 | if (rp->rcb_route.ro_rt) |
232 | rtfree(rp->rcb_route.ro_rt); | |
94a62155 BJ |
233 | raw_disconnect(rp); |
234 | soisdisconnected(so); | |
235 | break; | |
236 | ||
237 | /* | |
238 | * Mark the connection as being incapable of further input. | |
239 | */ | |
240 | case PRU_SHUTDOWN: | |
241 | socantsendmore(so); | |
242 | break; | |
243 | ||
244 | /* | |
245 | * Ship a packet out. The appropriate raw output | |
246 | * routine handles any massaging necessary. | |
247 | */ | |
248 | case PRU_SEND: | |
14fa60f2 | 249 | if (nam) { |
9e9695c7 SL |
250 | if (rp->rcb_flags & RAW_FADDR) { |
251 | error = EISCONN; | |
4945768c | 252 | break; |
9e9695c7 | 253 | } |
14fa60f2 | 254 | raw_connaddr(rp, nam); |
9e9695c7 SL |
255 | } else if ((rp->rcb_flags & RAW_FADDR) == 0) { |
256 | error = ENOTCONN; | |
4945768c | 257 | break; |
9e9695c7 | 258 | } |
71fb71a3 SL |
259 | #ifdef notdef |
260 | /* | |
261 | * Check for routing. If new foreign address, or | |
262 | * no route presently in use, try to allocate new | |
263 | * route. On failure, just hand packet to output | |
264 | * routine anyway in case it can handle it. | |
265 | */ | |
266 | if ((rp->rcb_flags & RAW_DONTROUTE) == 0) | |
267 | if (!equal(rp->rcb_faddr, rp->rcb_route.ro_dst) || | |
268 | rp->rcb_route.ro_rt == 0) { | |
269 | if (rp->rcb_route.ro_rt) | |
270 | rtfree(rp->rcb_route.ro_rt); | |
271 | rp->rcb_route.ro_dst = rp->rcb_faddr; | |
272 | rtalloc(&rp->rcb_route); | |
273 | } | |
274 | #endif | |
8a2f82db | 275 | error = (*so->so_proto->pr_output)(m, so); |
9e9695c7 | 276 | m = NULL; |
14fa60f2 | 277 | if (nam) |
126472ab | 278 | rp->rcb_flags &= ~RAW_FADDR; |
94a62155 BJ |
279 | break; |
280 | ||
281 | case PRU_ABORT: | |
282 | raw_disconnect(rp); | |
283 | sofree(so); | |
284 | soisdisconnected(so); | |
285 | break; | |
286 | ||
a62dd253 | 287 | case PRU_CONTROL: |
4945768c SL |
288 | m = NULL; |
289 | error = EOPNOTSUPP; | |
290 | break; | |
a62dd253 | 291 | |
94a62155 BJ |
292 | /* |
293 | * Not supported. | |
294 | */ | |
295 | case PRU_ACCEPT: | |
296 | case PRU_RCVD: | |
94a62155 BJ |
297 | case PRU_SENSE: |
298 | case PRU_RCVOOB: | |
299 | case PRU_SENDOOB: | |
300 | error = EOPNOTSUPP; | |
301 | break; | |
8df9431e | 302 | |
126472ab | 303 | case PRU_SOCKADDR: |
ac76a23d | 304 | bcopy((caddr_t)&rp->rcb_laddr, mtod(nam, caddr_t), |
14fa60f2 BJ |
305 | sizeof (struct sockaddr)); |
306 | nam->m_len = sizeof (struct sockaddr); | |
126472ab SL |
307 | break; |
308 | ||
94a62155 BJ |
309 | default: |
310 | panic("raw_usrreq"); | |
311 | } | |
9e9695c7 SL |
312 | release: |
313 | if (m != NULL) | |
314 | m_freem(m); | |
94a62155 | 315 | return (error); |
8df9431e | 316 | } |