Add missing name.
[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 $
6d49aa6f 35 * $DragonFly: src/sys/net/raw_usrreq.c,v 1.13 2007/04/22 01:13:11 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
3bf25ce1 52raw_init(void)
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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
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67raw_input(struct mbuf *m0, struct sockproto *proto, const struct sockaddr *src,
68 const struct sockaddr *dst)
984263bc 69{
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70 struct rawcb *rp;
71 struct mbuf *m = m0;
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72 struct socket *last;
73
590b8cd4 74 last = NULL;
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75 LIST_FOREACH(rp, &rawcb_list, list) {
76 if (rp->rcb_proto.sp_family != proto->sp_family)
77 continue;
78 if (rp->rcb_proto.sp_protocol &&
79 rp->rcb_proto.sp_protocol != proto->sp_protocol)
80 continue;
81 /*
82 * We assume the lower level routines have
83 * placed the address in a canonical format
84 * suitable for a structure comparison.
85 *
86 * Note that if the lengths are not the same
87 * the comparison will fail at the first byte.
88 */
0c3c561c 89 if (rp->rcb_laddr && !sa_equal(rp->rcb_laddr, dst))
984263bc 90 continue;
0c3c561c 91 if (rp->rcb_faddr && !sa_equal(rp->rcb_faddr, src))
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92 continue;
93 if (last) {
94 struct mbuf *n;
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95
96 n = m_copypacket(m, MB_DONTWAIT);
590b8cd4 97 if (n != NULL) {
6d49aa6f 98 if (ssb_appendaddr(&last->so_rcv, src, n,
590b8cd4 99 (struct mbuf *)0) == 0) {
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100 /* should notify about lost packet */
101 m_freem(n);
590b8cd4 102 } else {
984263bc 103 sorwakeup(last);
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104 }
105 }
106 }
107 last = rp->rcb_socket;
108 }
109 if (last) {
6d49aa6f 110 if (ssb_appendaddr(&last->so_rcv, src, m, (struct mbuf *)0) == 0)
984263bc 111 m_freem(m);
590b8cd4 112 else
984263bc 113 sorwakeup(last);
590b8cd4 114 } else {
984263bc 115 m_freem(m);
590b8cd4 116 }
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117}
118
119/*ARGSUSED*/
120void
3bf25ce1 121raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy)
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122{
123
124 if (cmd < 0 || cmd > PRC_NCMDS)
125 return;
126 /* INCOMPLETE */
127}
128
129static int
130raw_uabort(struct socket *so)
131{
132 struct rawcb *rp = sotorawcb(so);
133
590b8cd4 134 if (rp == NULL)
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135 return EINVAL;
136 raw_disconnect(rp);
137 sofree(so);
138 soisdisconnected(so);
139 return 0;
140}
141
142/* pru_accept is EOPNOTSUPP */
143
144static int
e4700d00 145raw_uattach(struct socket *so, int proto, struct pru_attach_info *ai)
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146{
147 struct rawcb *rp = sotorawcb(so);
148 int error;
149
590b8cd4 150 if (rp == NULL)
984263bc 151 return EINVAL;
e4700d00 152 if ((error = suser_cred(ai->p_ucred, NULL_CRED_OKAY)) != 0)
984263bc 153 return error;
e4700d00 154 return raw_attach(so, proto, ai->sb_rlimit);
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155}
156
157static int
dadab5e9 158raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
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159{
160 return EINVAL;
161}
162
163static int
dadab5e9 164raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
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165{
166 return EINVAL;
167}
168
169/* pru_connect2 is EOPNOTSUPP */
170/* pru_control is EOPNOTSUPP */
171
172static int
173raw_udetach(struct socket *so)
174{
175 struct rawcb *rp = sotorawcb(so);
176
590b8cd4 177 if (rp == NULL)
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178 return EINVAL;
179
180 raw_detach(rp);
181 return 0;
182}
183
184static int
185raw_udisconnect(struct socket *so)
186{
187 struct rawcb *rp = sotorawcb(so);
188
590b8cd4 189 if (rp == NULL)
984263bc 190 return EINVAL;
590b8cd4 191 if (rp->rcb_faddr == NULL) {
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192 return ENOTCONN;
193 }
194 raw_disconnect(rp);
195 soisdisconnected(so);
196 return 0;
197}
198
199/* pru_listen is EOPNOTSUPP */
200
201static int
202raw_upeeraddr(struct socket *so, struct sockaddr **nam)
203{
204 struct rawcb *rp = sotorawcb(so);
205
590b8cd4 206 if (rp == NULL)
984263bc 207 return EINVAL;
590b8cd4 208 if (rp->rcb_faddr == NULL) {
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209 return ENOTCONN;
210 }
cfa2ba21 211 *nam = dup_sockaddr(rp->rcb_faddr);
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212 return 0;
213}
214
215/* pru_rcvd is EOPNOTSUPP */
216/* pru_rcvoob is EOPNOTSUPP */
217
218static int
219raw_usend(struct socket *so, int flags, struct mbuf *m,
dadab5e9 220 struct sockaddr *nam, struct mbuf *control, struct thread *td)
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221{
222 int error;
223 struct rawcb *rp = sotorawcb(so);
47e78ae8 224 struct pr_output_info oi;
984263bc 225
590b8cd4 226 if (rp == NULL) {
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227 error = EINVAL;
228 goto release;
229 }
230
231 if (flags & PRUS_OOB) {
232 error = EOPNOTSUPP;
233 goto release;
234 }
235
236 if (control && control->m_len) {
237 error = EOPNOTSUPP;
238 goto release;
239 }
240 if (nam) {
241 if (rp->rcb_faddr) {
242 error = EISCONN;
243 goto release;
244 }
245 rp->rcb_faddr = nam;
590b8cd4 246 } else if (rp->rcb_faddr == NULL) {
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247 error = ENOTCONN;
248 goto release;
249 }
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250 oi.p_pid = td->td_proc->p_pid;
251 error = (*so->so_proto->pr_output)(m, so, &oi);
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252 m = NULL;
253 if (nam)
590b8cd4 254 rp->rcb_faddr = NULL;
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255release:
256 if (m != NULL)
257 m_freem(m);
258 return (error);
259}
260
261/* pru_sense is null */
262
263static int
264raw_ushutdown(struct socket *so)
265{
266 struct rawcb *rp = sotorawcb(so);
267
590b8cd4 268 if (rp == NULL)
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269 return EINVAL;
270 socantsendmore(so);
271 return 0;
272}
273
274static int
275raw_usockaddr(struct socket *so, struct sockaddr **nam)
276{
277 struct rawcb *rp = sotorawcb(so);
278
590b8cd4 279 if (rp == NULL)
984263bc 280 return EINVAL;
590b8cd4 281 if (rp->rcb_laddr == NULL)
984263bc 282 return EINVAL;
cfa2ba21 283 *nam = dup_sockaddr(rp->rcb_laddr);
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284 return 0;
285}
286
287struct pr_usrreqs raw_usrreqs = {
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288 .pru_abort = raw_uabort,
289 .pru_accept = pru_accept_notsupp,
290 .pru_attach = raw_uattach,
291 .pru_bind = raw_ubind,
292 .pru_connect = raw_uconnect,
293 .pru_connect2 = pru_connect2_notsupp,
294 .pru_control = pru_control_notsupp,
295 .pru_detach = raw_udetach,
296 .pru_disconnect = raw_udisconnect,
297 .pru_listen = pru_listen_notsupp,
298 .pru_peeraddr = raw_upeeraddr,
299 .pru_rcvd = pru_rcvd_notsupp,
300 .pru_rcvoob = pru_rcvoob_notsupp,
301 .pru_send = raw_usend,
302 .pru_sense = pru_sense_null,
303 .pru_shutdown = raw_ushutdown,
304 .pru_sockaddr = raw_usockaddr,
305 .pru_sosend = sosend,
306 .pru_soreceive = soreceive,
307 .pru_sopoll = sopoll
984263bc 308};
fa5e758c 309