2 * Copyright (c) 1980, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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 $
38 #include <sys/param.h>
39 #include <sys/systm.h>
43 #include <sys/protosw.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
47 #include <net/raw_cb.h>
50 * Initialize raw connection block q.
55 LIST_INIT(&rawcb_list
);
58 /************************************************************************
59 * RAW PROTOCOL INTERFACE *
60 ************************************************************************/
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
68 * Most other raw protocol interface functions are also serialized XXX.
71 raw_input(struct mbuf
*m0
, struct sockproto
*proto
, const struct sockaddr
*src
,
72 const struct sockaddr
*dst
)
79 LIST_FOREACH(rp
, &rawcb_list
, list
) {
80 if (rp
->rcb_proto
.sp_family
!= proto
->sp_family
)
82 if (rp
->rcb_proto
.sp_protocol
&&
83 rp
->rcb_proto
.sp_protocol
!= proto
->sp_protocol
)
86 * We assume the lower level routines have
87 * placed the address in a canonical format
88 * suitable for a structure comparison.
90 * Note that if the lengths are not the same
91 * the comparison will fail at the first byte.
93 if (rp
->rcb_laddr
&& !sa_equal(rp
->rcb_laddr
, dst
))
95 if (rp
->rcb_faddr
&& !sa_equal(rp
->rcb_faddr
, src
))
100 n
= m_copypacket(m
, MB_DONTWAIT
);
102 if (ssb_appendaddr(&last
->so_rcv
, src
, n
,
103 (struct mbuf
*)0) == 0) {
104 /* should notify about lost packet */
111 last
= rp
->rcb_socket
;
114 if (ssb_appendaddr(&last
->so_rcv
, src
, m
, (struct mbuf
*)0) == 0)
125 raw_ctlinput(int cmd
, struct sockaddr
*arg
, void *dummy
)
128 if (cmd
< 0 || cmd
> PRC_NCMDS
)
134 raw_uabort(struct socket
*so
)
136 struct rawcb
*rp
= sotorawcb(so
);
142 soisdisconnected(so
);
146 /* pru_accept is EOPNOTSUPP */
149 raw_uattach(struct socket
*so
, int proto
, struct pru_attach_info
*ai
)
151 struct rawcb
*rp
= sotorawcb(so
);
156 if ((error
= priv_check_cred(ai
->p_ucred
, PRIV_ROOT
, NULL_CRED_OKAY
)) != 0)
158 return raw_attach(so
, proto
, ai
->sb_rlimit
);
162 raw_ubind(struct socket
*so
, struct sockaddr
*nam
, struct thread
*td
)
168 raw_uconnect(struct socket
*so
, struct sockaddr
*nam
, struct thread
*td
)
173 /* pru_connect2 is EOPNOTSUPP */
174 /* pru_control is EOPNOTSUPP */
177 raw_udetach(struct socket
*so
)
179 struct rawcb
*rp
= sotorawcb(so
);
189 raw_udisconnect(struct socket
*so
)
191 struct rawcb
*rp
= sotorawcb(so
);
195 if (rp
->rcb_faddr
== NULL
) {
199 soisdisconnected(so
);
203 /* pru_listen is EOPNOTSUPP */
206 raw_upeeraddr(struct socket
*so
, struct sockaddr
**nam
)
208 struct rawcb
*rp
= sotorawcb(so
);
212 if (rp
->rcb_faddr
== NULL
) {
215 *nam
= dup_sockaddr(rp
->rcb_faddr
);
219 /* pru_rcvd is EOPNOTSUPP */
220 /* pru_rcvoob is EOPNOTSUPP */
223 raw_usend(struct socket
*so
, int flags
, struct mbuf
*m
,
224 struct sockaddr
*nam
, struct mbuf
*control
, struct thread
*td
)
227 struct rawcb
*rp
= sotorawcb(so
);
228 struct pr_output_info oi
;
235 if (flags
& PRUS_OOB
) {
240 if (control
&& control
->m_len
) {
250 } else if (rp
->rcb_faddr
== NULL
) {
254 oi
.p_pid
= td
->td_proc
->p_pid
;
255 error
= (*so
->so_proto
->pr_output
)(m
, so
, &oi
);
258 rp
->rcb_faddr
= NULL
;
265 /* pru_sense is null */
268 raw_ushutdown(struct socket
*so
)
270 struct rawcb
*rp
= sotorawcb(so
);
279 raw_usockaddr(struct socket
*so
, struct sockaddr
**nam
)
281 struct rawcb
*rp
= sotorawcb(so
);
285 if (rp
->rcb_laddr
== NULL
)
287 *nam
= dup_sockaddr(rp
->rcb_laddr
);
291 struct pr_usrreqs raw_usrreqs
= {
292 .pru_abort
= raw_uabort
,
293 .pru_accept
= pru_accept_notsupp
,
294 .pru_attach
= raw_uattach
,
295 .pru_bind
= raw_ubind
,
296 .pru_connect
= raw_uconnect
,
297 .pru_connect2
= pru_connect2_notsupp
,
298 .pru_control
= pru_control_notsupp
,
299 .pru_detach
= raw_udetach
,
300 .pru_disconnect
= raw_udisconnect
,
301 .pru_listen
= pru_listen_notsupp
,
302 .pru_peeraddr
= raw_upeeraddr
,
303 .pru_rcvd
= pru_rcvd_notsupp
,
304 .pru_rcvoob
= pru_rcvoob_notsupp
,
305 .pru_send
= raw_usend
,
306 .pru_sense
= pru_sense_null
,
307 .pru_shutdown
= raw_ushutdown
,
308 .pru_sockaddr
= raw_usockaddr
,
309 .pru_sosend
= sosend
,
310 .pru_soreceive
= soreceive
,