1/*
2 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*
29 *	Copyright (c) 1998 Apple Computer, Inc.
30 */
31
32/*	at_proto.c
33 */
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/ioctl.h>
38#include <sys/errno.h>
39#include <sys/malloc.h>
40#include <sys/socket.h>
41#include <sys/socketvar.h>
42#include <sys/protosw.h>
43#include <sys/domain.h>
44#include <sys/mbuf.h>
45#include <kern/locks.h>
46
47#include <sys/sysctl.h>
48
49#include <net/if.h>
50
51#include <netat/sysglue.h>
52#include <netat/appletalk.h>
53#include <netat/at_pcb.h>
54#include <netat/at_var.h>
55#include <netat/ddp.h>
56
57
58/*
59 * Dummy usrreqs struct created by Ted for FreeBSD 3.x integration.
60 * Fill in supported functions as appropriate.
61 */
62struct pr_usrreqs ddp_usrreqs = {
63	ddp_pru_abort,  pru_accept_notsupp, ddp_pru_attach, ddp_pru_bind,
64	ddp_pru_connect, pru_connect2_notsupp, ddp_pru_control, ddp_pru_detach,
65	ddp_pru_disconnect, pru_listen_notsupp, ddp_pru_peeraddr, pru_rcvd_notsupp,
66	pru_rcvoob_notsupp, ddp_pru_send, pru_sense_null, ddp_pru_shutdown,
67	ddp_pru_sockaddr, sosend, soreceive, pru_sopoll_notsupp
68};
69
70extern struct domain atalkdomain;
71extern void atalk_dominit(void);
72
73struct protosw atalksw[] = {
74  { SOCK_RAW,	&atalkdomain,	/*protocol*/ 0,	PR_ATOMIC|PR_ADDR,
75    /*input*/ 0, /*output*/ 0, /*clinput*/ 0, ddp_ctloutput,
76    /*ousrreq*/ 0,
77    ddp_init, /*fastto*/ 0, /*slowto*/ 0, /*drain*/ 0,
78    /*sysctl*/ 0, &ddp_usrreqs,
79	0, 0, 0, /*lock, unlock, getlock */
80   {0, 0}, 0, {0} /* filters */
81  }
82};
83
84struct domain atalkdomain =
85{ AF_APPLETALK,
86  "appletalk",
87  atalk_dominit,
88  0,
89  0,
90  atalksw,
91  0,
92  0, /* dom_rtattach */
93  0, 0, /* dom_rtoffset, dom_maxrtkey */
94  DDP_X_HDR_SIZE, 0,
95  0, /* domain global mutex */
96  0,  /* domain flags */
97  {0, 0} /*reserved[2] */
98};
99
100struct domain * atalkdom = &atalkdomain;
101lck_mtx_t  *atalk_mutex = NULL;
102
103lck_mtx_t *atalk_cluster_lock = NULL;
104static lck_attr_t *atalk_lock_attr;
105static lck_grp_t *atalk_lock_grp;
106static lck_grp_attr_t *atalk_lock_grp_attr;
107
108static int at_saved_lock, at_saved_unlock;
109
110SYSCTL_NODE(_net, PF_APPLETALK, appletalk, CTLFLAG_RW|CTLFLAG_LOCKED, 0, "AppleTalk Family");
111
112void
113atalk_dominit(void)
114{
115	atalk_mutex = atalkdom->dom_mtx;
116
117	atalk_lock_grp_attr = lck_grp_attr_alloc_init();
118	atalk_lock_grp = lck_grp_alloc_init("appletalk", atalk_lock_grp_attr);
119	atalk_lock_attr = lck_attr_alloc_init();
120	atalk_cluster_lock = lck_mtx_alloc_init(atalk_lock_grp,
121	    atalk_lock_attr);
122}
123
124void
125atalk_lock()
126{
127	int lr_saved;
128	lr_saved = (unsigned int) __builtin_return_address(0);
129
130	lck_mtx_assert(atalkdom->dom_mtx, LCK_MTX_ASSERT_NOTOWNED);
131	lck_mtx_lock(atalkdom->dom_mtx);
132	at_saved_lock = lr_saved;
133}
134
135void
136atalk_unlock()
137{
138	int lr_saved;
139	lr_saved = (unsigned int) __builtin_return_address(0);
140
141	lck_mtx_assert(atalkdom->dom_mtx, LCK_MTX_ASSERT_OWNED);
142	at_saved_unlock = lr_saved;
143	lck_mtx_unlock(atalkdom->dom_mtx);
144
145}
146
147
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149
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151