Initial import from FreeBSD RELENG_4:
[dragonfly.git] / sys / net / raw_cb.c
CommitLineData
984263bc
MD
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 * $FreeBSD: src/sys/net/raw_cb.c,v 1.16 1999/08/28 00:48:27 peter Exp $
35 */
36
37#include <sys/param.h>
38#include <sys/malloc.h>
39#include <sys/socket.h>
40#include <sys/socketvar.h>
41#include <sys/domain.h>
42#include <sys/protosw.h>
43
44#include <net/raw_cb.h>
45
46/*
47 * Routines to manage the raw protocol control blocks.
48 *
49 * TODO:
50 * hash lookups by protocol family/protocol + address family
51 * take care of unique address problems per AF?
52 * redo address binding to allow wildcards
53 */
54
55struct rawcb_list_head rawcb_list;
56
57static u_long raw_sendspace = RAWSNDQ;
58static u_long raw_recvspace = RAWRCVQ;
59
60/*
61 * Allocate a control block and a nominal amount
62 * of buffer space for the socket.
63 */
64int
65raw_attach(so, proto)
66 register struct socket *so;
67 int proto;
68{
69 register struct rawcb *rp = sotorawcb(so);
70 int error;
71
72 /*
73 * It is assumed that raw_attach is called
74 * after space has been allocated for the
75 * rawcb.
76 */
77 if (rp == 0)
78 return (ENOBUFS);
79 error = soreserve(so, raw_sendspace, raw_recvspace);
80 if (error)
81 return (error);
82 rp->rcb_socket = so;
83 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
84 rp->rcb_proto.sp_protocol = proto;
85 LIST_INSERT_HEAD(&rawcb_list, rp, list);
86 return (0);
87}
88
89/*
90 * Detach the raw connection block and discard
91 * socket resources.
92 */
93void
94raw_detach(rp)
95 register struct rawcb *rp;
96{
97 struct socket *so = rp->rcb_socket;
98
99 so->so_pcb = 0;
100 sofree(so);
101 LIST_REMOVE(rp, list);
102#ifdef notdef
103 if (rp->rcb_laddr)
104 m_freem(dtom(rp->rcb_laddr));
105 rp->rcb_laddr = 0;
106#endif
107 free((caddr_t)(rp), M_PCB);
108}
109
110/*
111 * Disconnect and possibly release resources.
112 */
113void
114raw_disconnect(rp)
115 struct rawcb *rp;
116{
117
118#ifdef notdef
119 if (rp->rcb_faddr)
120 m_freem(dtom(rp->rcb_faddr));
121 rp->rcb_faddr = 0;
122#endif
123 if (rp->rcb_socket->so_state & SS_NOFDREF)
124 raw_detach(rp);
125}
126
127#ifdef notdef
128#include <sys/mbuf.h>
129
130int
131raw_bind(so, nam)
132 register struct socket *so;
133 struct mbuf *nam;
134{
135 struct sockaddr *addr = mtod(nam, struct sockaddr *);
136 register struct rawcb *rp;
137
138 if (ifnet == 0)
139 return (EADDRNOTAVAIL);
140 rp = sotorawcb(so);
141 nam = m_copym(nam, 0, M_COPYALL, M_WAITOK);
142 rp->rcb_laddr = mtod(nam, struct sockaddr *);
143 return (0);
144}
145#endif