source: rtems/c/src/lib/libnetworking/net/raw_cb.c @ 39e6e65a

4.104.114.84.95
Last change on this file since 39e6e65a was 39e6e65a, checked in by Joel Sherrill <joel.sherrill@…>, on 08/19/98 at 21:32:28

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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_cb.c    8.1 (Berkeley) 6/10/93
34 * $Id$
35 */
36
37#include <sys/param.h>
38#include <sys/queue.h>
39#include <sys/systm.h>
40#include <sys/mbuf.h>
41#include <sys/socket.h>
42#include <sys/socketvar.h>
43#include <sys/domain.h>
44#include <sys/protosw.h>
45#include <sys/errno.h>
46
47#include <net/if.h>
48#include <net/route.h>
49#include <net/raw_cb.h>
50#include <netinet/in.h>
51
52/*
53 * Routines to manage the raw protocol control blocks.
54 *
55 * TODO:
56 *      hash lookups by protocol family/protocol + address family
57 *      take care of unique address problems per AF?
58 *      redo address binding to allow wildcards
59 */
60
61struct rawcb rawcb;
62static u_long   raw_sendspace = RAWSNDQ;
63static u_long   raw_recvspace = RAWRCVQ;
64
65/*
66 * Allocate a control block and a nominal amount
67 * of buffer space for the socket.
68 */
69int
70raw_attach(so, proto)
71        register struct socket *so;
72        int proto;
73{
74        register struct rawcb *rp = sotorawcb(so);
75        int error;
76
77        /*
78         * It is assumed that raw_attach is called
79         * after space has been allocated for the
80         * rawcb.
81         */
82        if (rp == 0)
83                return (ENOBUFS);
84        error = soreserve(so, raw_sendspace, raw_recvspace);
85        if (error)
86                return (error);
87        rp->rcb_socket = so;
88        rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
89        rp->rcb_proto.sp_protocol = proto;
90        insque(rp, &rawcb);
91        return (0);
92}
93
94/*
95 * Detach the raw connection block and discard
96 * socket resources.
97 */
98void
99raw_detach(rp)
100        register struct rawcb *rp;
101{
102        struct socket *so = rp->rcb_socket;
103
104        so->so_pcb = 0;
105        sofree(so);
106        remque(rp);
107#ifdef notdef
108        if (rp->rcb_laddr)
109                m_freem(dtom(rp->rcb_laddr));
110        rp->rcb_laddr = 0;
111#endif
112        free((caddr_t)(rp), M_PCB);
113}
114
115/*
116 * Disconnect and possibly release resources.
117 */
118void
119raw_disconnect(rp)
120        struct rawcb *rp;
121{
122
123#ifdef notdef
124        if (rp->rcb_faddr)
125                m_freem(dtom(rp->rcb_faddr));
126        rp->rcb_faddr = 0;
127#endif
128        if (rp->rcb_socket->so_state & SS_NOFDREF)
129                raw_detach(rp);
130}
131
132#ifdef notdef
133int
134raw_bind(so, nam)
135        register struct socket *so;
136        struct mbuf *nam;
137{
138        struct sockaddr *addr = mtod(nam, struct sockaddr *);
139        register struct rawcb *rp;
140
141        if (ifnet == 0)
142                return (EADDRNOTAVAIL);
143        rp = sotorawcb(so);
144        nam = m_copym(nam, 0, M_COPYALL, M_WAITOK);
145        rp->rcb_laddr = mtod(nam, struct sockaddr *);
146        return (0);
147}
148#endif
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