bsd/netat/at_proto.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  *      Copyright (c) 1998 Apple Computer, Inc.
  32  */
  33
  34 /*      at_proto.c
  35  */
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/ioctl.h>
  40 #include <sys/errno.h>
  41 #include <sys/malloc.h>
  42 #include <sys/socket.h>
  43 #include <sys/socketvar.h>
  44 #include <sys/protosw.h>
  45 #include <sys/domain.h>
  46 #include <sys/mbuf.h>
  47 #include <kern/locks.h>
  48
  49 #include <sys/sysctl.h>
  50
  51 #include <net/if.h>
  52
  53 #include <netat/appletalk.h>
  54 #include <netat/at_var.h>
  55 #include <netat/ddp.h>
  56
  57
  58 extern int      ddp_pru_abort(struct socket *so);
  59
  60 extern int      ddp_pru_attach(struct socket *so, int proto,
  61                                struct proc *p);
  62 extern int      ddp_pru_bind(struct socket *so, struct sockaddr *nam,
  63                              struct proc *p);
  64 extern int      ddp_pru_connect(struct socket *so, struct sockaddr *nam,
  65                                 struct proc *p);
  66
  67 extern int      ddp_pru_control(struct socket *so, u_long cmd, caddr_t data,
  68                                 struct ifnet *ifp, struct proc *p);
  69 extern int      ddp_pru_detach(struct socket *so);
  70 extern int      ddp_pru_disconnect(struct socket *so);
  71
  72 extern int      ddp_pru_peeraddr(struct socket *so,
  73                                  struct sockaddr **nam);
  74
  75 extern int      ddp_pru_send(struct socket *so, int flags, struct mbuf *m,
  76                                  struct sockaddr *addr, struct mbuf *control,
  77                                  struct proc *p);
  78
  79 extern int      ddp_pru_shutdown(struct socket *so);
  80 extern int      ddp_pru_sockaddr(struct socket *so,
  81                                  struct sockaddr **nam);
  82
  83 /*
  84  * Dummy usrreqs struct created by Ted for FreeBSD 3.x integration.
  85  * Fill in supported functions as appropriate.
  86  */
  87 struct pr_usrreqs ddp_usrreqs = {
  88         ddp_pru_abort,  pru_accept_notsupp, ddp_pru_attach, ddp_pru_bind,
  89         ddp_pru_connect, pru_connect2_notsupp, ddp_pru_control, ddp_pru_detach,
  90         ddp_pru_disconnect, pru_listen_notsupp, ddp_pru_peeraddr, pru_rcvd_notsupp,
  91         pru_rcvoob_notsupp, ddp_pru_send, pru_sense_null, ddp_pru_shutdown,
  92         ddp_pru_sockaddr, sosend, soreceive, pru_sopoll_notsupp
  93 };
  94
  95 extern struct domain atalkdomain;
  96 extern void atalk_dominit(void);
  97
  98 struct protosw atalksw[] = {
  99   { SOCK_RAW,   &atalkdomain,   /*protocol*/ 0, PR_ATOMIC|PR_ADDR,
 100     /*input*/ 0, /*output*/ 0, /*clinput*/ 0, ddp_ctloutput,
 101     /*ousrreq*/ 0,
 102     ddp_init, /*fastto*/ 0, /*slowto*/ 0, /*drain*/ 0,
 103     /*sysctl*/ 0, &ddp_usrreqs,
 104         0, 0, 0, /*lock, unlock, getlock */
 105    {0, 0}, 0, {0} /* filters */
 106   }
 107 };
 108
 109 struct domain atalkdomain =
 110 { AF_APPLETALK,
 111   "appletalk",
 112   atalk_dominit,
 113   0,
 114   0,
 115   atalksw,
 116   0,
 117   0, /* dom_rtattach */
 118   0, 0, /* dom_rtoffset, dom_maxrtkey */
 119   DDP_X_HDR_SIZE, 0,
 120   0, /* domain global mutex */
 121   0,  /* domain flags */
 122   {0, 0} /*reserved[2] */
 123 };
 124
 125 struct domain * atalkdom = &atalkdomain;
 126 lck_mtx_t  *atalk_mutex = NULL;
 127
 128 static int at_saved_lock, at_saved_unlock;
 129
 130 SYSCTL_NODE(_net, PF_APPLETALK, appletalk, CTLFLAG_RW, 0, "AppleTalk Family");
 131
 132 void
 133 atalk_dominit(void)
 134 {
 135         atalk_mutex = atalkdom->dom_mtx;
 136 }
 137
 138 void
 139 atalk_lock()
 140 {
 141         int lr_saved;
 142         lr_saved = (unsigned int) __builtin_return_address(0);
 143
 144         lck_mtx_assert(atalkdom->dom_mtx, LCK_MTX_ASSERT_NOTOWNED);
 145         lck_mtx_lock(atalkdom->dom_mtx);
 146         at_saved_lock = lr_saved;
 147 }
 148
 149 void
 150 atalk_unlock()
 151 {
 152         int lr_saved;
 153         lr_saved = (unsigned int) __builtin_return_address(0);
 154
 155         lck_mtx_assert(atalkdom->dom_mtx, LCK_MTX_ASSERT_OWNED);
 156         at_saved_unlock = lr_saved;
 157         lck_mtx_unlock(atalkdom->dom_mtx);
 158
 159 }
 160
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 162
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 164