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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93
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30 * $FreeBSD: head/sys/net/raw_cb.c 130336 2004-06-11 03:52:56Z rwatson $
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| 30 * $FreeBSD: head/sys/net/raw_cb.c 130387 2004-06-12 20:47:32Z rwatson $ |
31 */
32
33#include <sys/param.h>
34#include <sys/domain.h>
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| 35#include <sys/lock.h> |
36#include <sys/malloc.h>
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| 37#include <sys/mutex.h> |
38#include <sys/protosw.h>
39#include <sys/socket.h>
40#include <sys/socketvar.h>
41#include <sys/systm.h>
42
43#include <net/raw_cb.h>
44
45/*
46 * Routines to manage the raw protocol control blocks.
47 *
48 * TODO:
49 * hash lookups by protocol family/protocol + address family
50 * take care of unique address problems per AF?
51 * redo address binding to allow wildcards
52 */
53
54struct rawcb_list_head rawcb_list;
55
56const static u_long raw_sendspace = RAWSNDQ;
57const static u_long raw_recvspace = RAWRCVQ;
58
59/*
60 * Allocate a control block and a nominal amount
61 * of buffer space for the socket.
62 */
63int
64raw_attach(so, proto)
65 register struct socket *so;
66 int proto;
67{
68 register struct rawcb *rp = sotorawcb(so);
69 int error;
70
71 /*
72 * It is assumed that raw_attach is called
73 * after space has been allocated for the
74 * rawcb.
75 */
76 if (rp == 0)
77 return (ENOBUFS);
78 error = soreserve(so, raw_sendspace, raw_recvspace);
79 if (error)
80 return (error);
81 rp->rcb_socket = so;
82 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
83 rp->rcb_proto.sp_protocol = proto;
84 LIST_INSERT_HEAD(&rawcb_list, rp, list);
85 return (0);
86}
87
88/*
89 * Detach the raw connection block and discard
90 * socket resources.
91 */
92void
93raw_detach(rp)
94 register struct rawcb *rp;
95{
96 struct socket *so = rp->rcb_socket;
97
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| 98 SOCK_LOCK(so); |
99 so->so_pcb = 0;
100 sotryfree(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_TRYWAIT);
142 rp->rcb_laddr = mtod(nam, struct sockaddr *);
143 return (0);
144}
145#endif
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