- Bring in patch to make.1 related to previous patch.
[dragonfly.git] / sys / net / raw_usrreq.c
CommitLineData
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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 $
0c3c561c 35 * $DragonFly: src/sys/net/raw_usrreq.c,v 1.9 2005/01/06 09:14:13 hsu 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 */
0c3c561c 92 if (rp->rcb_laddr && !sa_equal(rp->rcb_laddr, dst))
984263bc 93 continue;
0c3c561c 94 if (rp->rcb_faddr && !sa_equal(rp->rcb_faddr, src))
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95 continue;
96 if (last) {
97 struct mbuf *n;
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98
99 n = m_copypacket(m, MB_DONTWAIT);
984263bc 100 if (n) {
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101 if (sbappendaddr(&last->so_rcv, src, n,
102 (struct mbuf *)0) == 0)
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103 /* should notify about lost packet */
104 m_freem(n);
105 else {
106 sorwakeup(last);
107 sockets++;
108 }
109 }
110 }
111 last = rp->rcb_socket;
112 }
113 if (last) {
f23061d4 114 if (sbappendaddr(&last->so_rcv, src, m, (struct mbuf *)0) == 0)
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115 m_freem(m);
116 else {
117 sorwakeup(last);
118 sockets++;
119 }
120 } else
121 m_freem(m);
122}
123
124/*ARGSUSED*/
125void
126raw_ctlinput(cmd, arg, dummy)
127 int cmd;
128 struct sockaddr *arg;
129 void *dummy;
130{
131
132 if (cmd < 0 || cmd > PRC_NCMDS)
133 return;
134 /* INCOMPLETE */
135}
136
137static int
138raw_uabort(struct socket *so)
139{
140 struct rawcb *rp = sotorawcb(so);
141
142 if (rp == 0)
143 return EINVAL;
144 raw_disconnect(rp);
145 sofree(so);
146 soisdisconnected(so);
147 return 0;
148}
149
150/* pru_accept is EOPNOTSUPP */
151
152static int
e4700d00 153raw_uattach(struct socket *so, int proto, struct pru_attach_info *ai)
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154{
155 struct rawcb *rp = sotorawcb(so);
156 int error;
157
158 if (rp == 0)
159 return EINVAL;
e4700d00 160 if ((error = suser_cred(ai->p_ucred, NULL_CRED_OKAY)) != 0)
984263bc 161 return error;
e4700d00 162 return raw_attach(so, proto, ai->sb_rlimit);
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163}
164
165static int
dadab5e9 166raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
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167{
168 return EINVAL;
169}
170
171static int
dadab5e9 172raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
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173{
174 return EINVAL;
175}
176
177/* pru_connect2 is EOPNOTSUPP */
178/* pru_control is EOPNOTSUPP */
179
180static int
181raw_udetach(struct socket *so)
182{
183 struct rawcb *rp = sotorawcb(so);
184
185 if (rp == 0)
186 return EINVAL;
187
188 raw_detach(rp);
189 return 0;
190}
191
192static int
193raw_udisconnect(struct socket *so)
194{
195 struct rawcb *rp = sotorawcb(so);
196
197 if (rp == 0)
198 return EINVAL;
199 if (rp->rcb_faddr == 0) {
200 return ENOTCONN;
201 }
202 raw_disconnect(rp);
203 soisdisconnected(so);
204 return 0;
205}
206
207/* pru_listen is EOPNOTSUPP */
208
209static int
210raw_upeeraddr(struct socket *so, struct sockaddr **nam)
211{
212 struct rawcb *rp = sotorawcb(so);
213
214 if (rp == 0)
215 return EINVAL;
216 if (rp->rcb_faddr == 0) {
217 return ENOTCONN;
218 }
cfa2ba21 219 *nam = dup_sockaddr(rp->rcb_faddr);
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220 return 0;
221}
222
223/* pru_rcvd is EOPNOTSUPP */
224/* pru_rcvoob is EOPNOTSUPP */
225
226static int
227raw_usend(struct socket *so, int flags, struct mbuf *m,
dadab5e9 228 struct sockaddr *nam, struct mbuf *control, struct thread *td)
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229{
230 int error;
231 struct rawcb *rp = sotorawcb(so);
47e78ae8 232 struct pr_output_info oi;
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233
234 if (rp == 0) {
235 error = EINVAL;
236 goto release;
237 }
238
239 if (flags & PRUS_OOB) {
240 error = EOPNOTSUPP;
241 goto release;
242 }
243
244 if (control && control->m_len) {
245 error = EOPNOTSUPP;
246 goto release;
247 }
248 if (nam) {
249 if (rp->rcb_faddr) {
250 error = EISCONN;
251 goto release;
252 }
253 rp->rcb_faddr = nam;
254 } else if (rp->rcb_faddr == 0) {
255 error = ENOTCONN;
256 goto release;
257 }
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258 oi.p_pid = td->td_proc->p_pid;
259 error = (*so->so_proto->pr_output)(m, so, &oi);
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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;
cfa2ba21 291 *nam = dup_sockaddr(rp->rcb_laddr);
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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};