network - Completely revamp the netisr / dispatch code
[dragonfly.git] / sys / net / raw_usrreq.c
... / ...
CommitLineData
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 $
35 * $DragonFly: src/sys/net/raw_usrreq.c,v 1.14 2007/06/24 20:00:00 dillon Exp $
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/priv.h>
43#include <sys/protosw.h>
44#include <sys/socket.h>
45#include <sys/socketvar.h>
46
47#include <net/raw_cb.h>
48
49/*
50 * Initialize raw connection block q.
51 */
52void
53raw_init(void)
54{
55 LIST_INIT(&rawcb_list);
56}
57
58/************************************************************************
59 * RAW PROTOCOL INTERFACE *
60 ************************************************************************/
61
62/*
63 * Raw protocol input routine. Find the socket associated with the packet(s)
64 * and move them over. If nothing exists for this packet, drop it. This
65 * routine is indirect called via rts_input() and will be serialized on
66 * cpu 0.
67 *
68 * Most other raw protocol interface functions are also serialized XXX.
69 */
70void
71raw_input(struct mbuf *m0, const struct sockproto *proto,
72 const struct sockaddr *src, const struct sockaddr *dst,
73 const struct rawcb *skip)
74{
75 struct rawcb *rp;
76 struct mbuf *m = m0;
77 struct socket *last;
78
79 last = NULL;
80 LIST_FOREACH(rp, &rawcb_list, list) {
81 if (rp == skip)
82 continue;
83 if (rp->rcb_proto.sp_family != proto->sp_family)
84 continue;
85 if (rp->rcb_proto.sp_protocol &&
86 rp->rcb_proto.sp_protocol != proto->sp_protocol)
87 continue;
88 /*
89 * We assume the lower level routines have
90 * placed the address in a canonical format
91 * suitable for a structure comparison.
92 *
93 * Note that if the lengths are not the same
94 * the comparison will fail at the first byte.
95 */
96 if (rp->rcb_laddr && !sa_equal(rp->rcb_laddr, dst))
97 continue;
98 if (rp->rcb_faddr && !sa_equal(rp->rcb_faddr, src))
99 continue;
100 if (last) {
101 struct mbuf *n;
102
103 n = m_copypacket(m, MB_DONTWAIT);
104 if (n != NULL) {
105 if (ssb_appendaddr(&last->so_rcv, src, n,
106 NULL) == 0) {
107 /* should notify about lost packet */
108 m_freem(n);
109 } else {
110 sorwakeup(last);
111 }
112 }
113 }
114 last = rp->rcb_socket;
115 }
116 if (last) {
117 if (ssb_appendaddr(&last->so_rcv, src, m, NULL) == 0)
118 m_freem(m);
119 else
120 sorwakeup(last);
121 } else {
122 m_freem(m);
123 }
124}
125
126/*ARGSUSED*/
127void
128raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy)
129{
130
131 if (cmd < 0 || cmd > PRC_NCMDS)
132 return;
133 /* INCOMPLETE */
134}
135
136static int
137raw_uabort(struct socket *so)
138{
139 struct rawcb *rp = sotorawcb(so);
140
141 if (rp == NULL)
142 return EINVAL;
143 raw_disconnect(rp);
144 sofree(so);
145 soisdisconnected(so);
146 return 0;
147}
148
149/* pru_accept is EOPNOTSUPP */
150
151static int
152raw_uattach(struct socket *so, int proto, struct pru_attach_info *ai)
153{
154 struct rawcb *rp = sotorawcb(so);
155 int error;
156
157 if (rp == NULL)
158 return EINVAL;
159 if ((error = priv_check_cred(ai->p_ucred, PRIV_ROOT, NULL_CRED_OKAY)) != 0)
160 return error;
161 return raw_attach(so, proto, ai->sb_rlimit);
162}
163
164static int
165raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
166{
167 return EINVAL;
168}
169
170static int
171raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
172{
173 return EINVAL;
174}
175
176/* pru_connect2 is EOPNOTSUPP */
177/* pru_control is EOPNOTSUPP */
178
179static int
180raw_udetach(struct socket *so)
181{
182 struct rawcb *rp = sotorawcb(so);
183
184 if (rp == NULL)
185 return EINVAL;
186
187 raw_detach(rp);
188 return 0;
189}
190
191static int
192raw_udisconnect(struct socket *so)
193{
194 struct rawcb *rp = sotorawcb(so);
195
196 if (rp == NULL)
197 return EINVAL;
198 if (rp->rcb_faddr == NULL) {
199 return ENOTCONN;
200 }
201 raw_disconnect(rp);
202 soisdisconnected(so);
203 return 0;
204}
205
206/* pru_listen is EOPNOTSUPP */
207
208static int
209raw_upeeraddr(struct socket *so, struct sockaddr **nam)
210{
211 struct rawcb *rp = sotorawcb(so);
212
213 if (rp == NULL)
214 return EINVAL;
215 if (rp->rcb_faddr == NULL) {
216 return ENOTCONN;
217 }
218 *nam = dup_sockaddr(rp->rcb_faddr);
219 return 0;
220}
221
222/* pru_rcvd is EOPNOTSUPP */
223/* pru_rcvoob is EOPNOTSUPP */
224
225static int
226raw_usend(struct socket *so, int flags, struct mbuf *m,
227 struct sockaddr *nam, struct mbuf *control, struct thread *td)
228{
229 int error;
230 struct rawcb *rp = sotorawcb(so);
231 struct pr_output_info oi;
232
233 if (rp == NULL) {
234 error = EINVAL;
235 goto release;
236 }
237
238 if (flags & PRUS_OOB) {
239 error = EOPNOTSUPP;
240 goto release;
241 }
242
243 if (control && control->m_len) {
244 error = EOPNOTSUPP;
245 goto release;
246 }
247 if (nam) {
248 if (rp->rcb_faddr) {
249 error = EISCONN;
250 goto release;
251 }
252 rp->rcb_faddr = nam;
253 } else if (rp->rcb_faddr == NULL) {
254 error = ENOTCONN;
255 goto release;
256 }
257 oi.p_pid = td->td_proc->p_pid;
258 error = (*so->so_proto->pr_output)(m, so, &oi);
259 m = NULL;
260 if (nam)
261 rp->rcb_faddr = NULL;
262release:
263 if (m != NULL)
264 m_freem(m);
265 return (error);
266}
267
268/* pru_sense is null */
269
270static int
271raw_ushutdown(struct socket *so)
272{
273 struct rawcb *rp = sotorawcb(so);
274
275 if (rp == NULL)
276 return EINVAL;
277 socantsendmore(so);
278 return 0;
279}
280
281static int
282raw_usockaddr(struct socket *so, struct sockaddr **nam)
283{
284 struct rawcb *rp = sotorawcb(so);
285
286 if (rp == NULL)
287 return EINVAL;
288 if (rp->rcb_laddr == NULL)
289 return EINVAL;
290 *nam = dup_sockaddr(rp->rcb_laddr);
291 return 0;
292}
293
294struct pr_usrreqs raw_usrreqs = {
295 .pru_abort = raw_uabort,
296 .pru_accept = pru_accept_notsupp,
297 .pru_attach = raw_uattach,
298 .pru_bind = raw_ubind,
299 .pru_connect = raw_uconnect,
300 .pru_connect2 = pru_connect2_notsupp,
301 .pru_control = pru_control_notsupp,
302 .pru_detach = raw_udetach,
303 .pru_disconnect = raw_udisconnect,
304 .pru_listen = pru_listen_notsupp,
305 .pru_peeraddr = raw_upeeraddr,
306 .pru_rcvd = pru_rcvd_notsupp,
307 .pru_rcvoob = pru_rcvoob_notsupp,
308 .pru_send = raw_usend,
309 .pru_sense = pru_sense_null,
310 .pru_shutdown = raw_ushutdown,
311 .pru_sockaddr = raw_usockaddr,
312 .pru_sosend = sosend,
313 .pru_soreceive = soreceive
314};