natm_proto.c revision 152242 
1/*	$NetBSD: natm_proto.c,v 1.3 1996/09/18 00:56:41 chuck Exp $	*/
2/*-
3 *
4 * Copyright (c) 1996 Charles D. Cranor and Washington University.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by Charles D. Cranor and
18 *      Washington University.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/*
35 * protocol layer for access to native mode ATM
36 */
37
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD: head/sys/netnatm/natm_proto.c 152242 2005-11-09 13:29:16Z ru $");
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/kernel.h>
44#include <sys/socket.h>
45#include <sys/protosw.h>
46#include <sys/domain.h>
47
48#include <net/if.h>
49#include <net/netisr.h>
50
51#include <netinet/in.h>
52
53#include <netnatm/natm.h>
54
55static	void natm_init(void);
56
57static struct domain natmdomain;
58
59static struct protosw natmsw[] = {
60{
61	.pr_type =		SOCK_STREAM,
62	.pr_domain =		&natmdomain,
63	.pr_protocol =		PROTO_NATMAAL5,
64	.pr_flags =		PR_CONNREQUIRED,
65	.pr_usrreqs =		&natm_usrreqs
66},
67{
68	.pr_type =		SOCK_DGRAM,
69	.pr_domain =		&natmdomain,
70	.pr_protocol =		PROTO_NATMAAL5,
71	.pr_flags =		PR_CONNREQUIRED|PR_ATOMIC,
72	.pr_usrreqs =		&natm_usrreqs
73},
74{
75	.pr_type =		SOCK_STREAM,
76	.pr_domain =		&natmdomain,
77	.pr_protocol =		PROTO_NATMAAL0,
78	.pr_flags =		PR_CONNREQUIRED,
79	.pr_usrreqs =		&natm_usrreqs
80},
81};
82
83static struct domain natmdomain = {
84	.dom_family =		AF_NATM,
85	.dom_name =		"natm",
86	.dom_init =		natm_init,
87	.dom_protosw =		natmsw,
88	.dom_protoswNPROTOSW =	&natmsw[sizeof(natmsw)/sizeof(natmsw[0])],
89};
90
91static int natmqmaxlen = 1000 /* IFQ_MAXLEN */;	/* max # of packets on queue */
92static struct ifqueue natmintrq;
93#ifdef NATM_STAT
94u_int natm_sodropcnt;		/* # mbufs dropped due to full sb */
95u_int natm_sodropbytes;		/* # of bytes dropped */
96u_int natm_sookcnt;		/* # mbufs ok */
97u_int natm_sookbytes;		/* # of bytes ok */
98#endif
99
100static void
101natm_init(void)
102{
103	LIST_INIT(&natm_pcbs);
104	bzero(&natmintrq, sizeof(natmintrq));
105	natmintrq.ifq_maxlen = natmqmaxlen;
106	NATM_LOCK_INIT();
107	mtx_init(&natmintrq.ifq_mtx, "natm_inq", NULL, MTX_DEF);
108	netisr_register(NETISR_NATM, natmintr, &natmintrq, NETISR_MPSAFE);
109}
110
111DOMAIN_SET(natm);
112