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[dragonfly.git] / sys / net / raw_usrreq.c
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1/*
2 * Copyright (c) 1980, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
dadab5e9 35 * $DragonFly: src/sys/net/raw_usrreq.c,v 1.4 2003/06/25 03:56:02 dillon Exp $
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36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/mbuf.h>
41#include <sys/proc.h>
42#include <sys/protosw.h>
43#include <sys/socket.h>
44#include <sys/socketvar.h>
45
46#include <net/raw_cb.h>
47
48/*
49 * Initialize raw connection block q.
50 */
51void
52raw_init()
53{
54 LIST_INIT(&rawcb_list);
55}
56
57
58/*
59 * Raw protocol input routine. Find the socket
60 * associated with the packet(s) and move them over. If
61 * nothing exists for this packet, drop it.
62 */
63/*
64 * Raw protocol interface.
65 */
66void
67raw_input(m0, proto, src, dst)
68 struct mbuf *m0;
dadab5e9 69 struct sockproto *proto;
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70 struct sockaddr *src, *dst;
71{
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72 struct rawcb *rp;
73 struct mbuf *m = m0;
74 int sockets = 0;
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75 struct socket *last;
76
77 last = 0;
78 LIST_FOREACH(rp, &rawcb_list, list) {
79 if (rp->rcb_proto.sp_family != proto->sp_family)
80 continue;
81 if (rp->rcb_proto.sp_protocol &&
82 rp->rcb_proto.sp_protocol != proto->sp_protocol)
83 continue;
84 /*
85 * We assume the lower level routines have
86 * placed the address in a canonical format
87 * suitable for a structure comparison.
88 *
89 * Note that if the lengths are not the same
90 * the comparison will fail at the first byte.
91 */
92#define equal(a1, a2) \
93 (bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
94 if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
95 continue;
96 if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
97 continue;
98 if (last) {
99 struct mbuf *n;
100 n = m_copy(m, 0, (int)M_COPYALL);
101 if (n) {
102 if (sbappendaddr(&last->so_rcv, src,
103 n, (struct mbuf *)0) == 0)
104 /* should notify about lost packet */
105 m_freem(n);
106 else {
107 sorwakeup(last);
108 sockets++;
109 }
110 }
111 }
112 last = rp->rcb_socket;
113 }
114 if (last) {
115 if (sbappendaddr(&last->so_rcv, src,
116 m, (struct mbuf *)0) == 0)
117 m_freem(m);
118 else {
119 sorwakeup(last);
120 sockets++;
121 }
122 } else
123 m_freem(m);
124}
125
126/*ARGSUSED*/
127void
128raw_ctlinput(cmd, arg, dummy)
129 int cmd;
130 struct sockaddr *arg;
131 void *dummy;
132{
133
134 if (cmd < 0 || cmd > PRC_NCMDS)
135 return;
136 /* INCOMPLETE */
137}
138
139static int
140raw_uabort(struct socket *so)
141{
142 struct rawcb *rp = sotorawcb(so);
143
144 if (rp == 0)
145 return EINVAL;
146 raw_disconnect(rp);
147 sofree(so);
148 soisdisconnected(so);
149 return 0;
150}
151
152/* pru_accept is EOPNOTSUPP */
153
154static int
dadab5e9 155raw_uattach(struct socket *so, int proto, struct thread *td)
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156{
157 struct rawcb *rp = sotorawcb(so);
158 int error;
159
160 if (rp == 0)
161 return EINVAL;
dadab5e9 162 if ((error = suser(td)) != 0)
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163 return error;
164 return raw_attach(so, proto);
165}
166
167static int
dadab5e9 168raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
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169{
170 return EINVAL;
171}
172
173static int
dadab5e9 174raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
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175{
176 return EINVAL;
177}
178
179/* pru_connect2 is EOPNOTSUPP */
180/* pru_control is EOPNOTSUPP */
181
182static int
183raw_udetach(struct socket *so)
184{
185 struct rawcb *rp = sotorawcb(so);
186
187 if (rp == 0)
188 return EINVAL;
189
190 raw_detach(rp);
191 return 0;
192}
193
194static int
195raw_udisconnect(struct socket *so)
196{
197 struct rawcb *rp = sotorawcb(so);
198
199 if (rp == 0)
200 return EINVAL;
201 if (rp->rcb_faddr == 0) {
202 return ENOTCONN;
203 }
204 raw_disconnect(rp);
205 soisdisconnected(so);
206 return 0;
207}
208
209/* pru_listen is EOPNOTSUPP */
210
211static int
212raw_upeeraddr(struct socket *so, struct sockaddr **nam)
213{
214 struct rawcb *rp = sotorawcb(so);
215
216 if (rp == 0)
217 return EINVAL;
218 if (rp->rcb_faddr == 0) {
219 return ENOTCONN;
220 }
221 *nam = dup_sockaddr(rp->rcb_faddr, 1);
222 return 0;
223}
224
225/* pru_rcvd is EOPNOTSUPP */
226/* pru_rcvoob is EOPNOTSUPP */
227
228static int
229raw_usend(struct socket *so, int flags, struct mbuf *m,
dadab5e9 230 struct sockaddr *nam, struct mbuf *control, struct thread *td)
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231{
232 int error;
233 struct rawcb *rp = sotorawcb(so);
234
235 if (rp == 0) {
236 error = EINVAL;
237 goto release;
238 }
239
240 if (flags & PRUS_OOB) {
241 error = EOPNOTSUPP;
242 goto release;
243 }
244
245 if (control && control->m_len) {
246 error = EOPNOTSUPP;
247 goto release;
248 }
249 if (nam) {
250 if (rp->rcb_faddr) {
251 error = EISCONN;
252 goto release;
253 }
254 rp->rcb_faddr = nam;
255 } else if (rp->rcb_faddr == 0) {
256 error = ENOTCONN;
257 goto release;
258 }
259 error = (*so->so_proto->pr_output)(m, so);
260 m = NULL;
261 if (nam)
262 rp->rcb_faddr = 0;
263release:
264 if (m != NULL)
265 m_freem(m);
266 return (error);
267}
268
269/* pru_sense is null */
270
271static int
272raw_ushutdown(struct socket *so)
273{
274 struct rawcb *rp = sotorawcb(so);
275
276 if (rp == 0)
277 return EINVAL;
278 socantsendmore(so);
279 return 0;
280}
281
282static int
283raw_usockaddr(struct socket *so, struct sockaddr **nam)
284{
285 struct rawcb *rp = sotorawcb(so);
286
287 if (rp == 0)
288 return EINVAL;
289 if (rp->rcb_laddr == 0)
290 return EINVAL;
291 *nam = dup_sockaddr(rp->rcb_laddr, 1);
292 return 0;
293}
294
295struct pr_usrreqs raw_usrreqs = {
296 raw_uabort, pru_accept_notsupp, raw_uattach, raw_ubind, raw_uconnect,
297 pru_connect2_notsupp, pru_control_notsupp, raw_udetach,
298 raw_udisconnect, pru_listen_notsupp, raw_upeeraddr, pru_rcvd_notsupp,
299 pru_rcvoob_notsupp, raw_usend, pru_sense_null, raw_ushutdown,
300 raw_usockaddr, sosend, soreceive, sopoll
301};