bsd/netat/at_proto.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  *      Copyright (c) 1998 Apple Computer, Inc.
  24  */
  25
  26 /*      at_proto.c
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/systm.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/errno.h>
  33 #include <sys/malloc.h>
  34 #include <sys/socket.h>
  35 #include <sys/socketvar.h>
  36 #include <sys/protosw.h>
  37 #include <sys/domain.h>
  38 #include <sys/mbuf.h>
  39 #include <kern/locks.h>
  40
  41 #include <sys/sysctl.h>
  42
  43 #include <net/if.h>
  44
  45 #include <netat/appletalk.h>
  46 #include <netat/at_var.h>
  47 #include <netat/ddp.h>
  48
  49
  50 extern int      ddp_pru_abort(struct socket *so);
  51
  52 extern int      ddp_pru_attach(struct socket *so, int proto,
  53                                struct proc *p);
  54 extern int      ddp_pru_bind(struct socket *so, struct sockaddr *nam,
  55                              struct proc *p);
  56 extern int      ddp_pru_connect(struct socket *so, struct sockaddr *nam,
  57                                 struct proc *p);
  58
  59 extern int      ddp_pru_control(struct socket *so, u_long cmd, caddr_t data,
  60                                 struct ifnet *ifp, struct proc *p);
  61 extern int      ddp_pru_detach(struct socket *so);
  62 extern int      ddp_pru_disconnect(struct socket *so);
  63
  64 extern int      ddp_pru_peeraddr(struct socket *so,
  65                                  struct sockaddr **nam);
  66
  67 extern int      ddp_pru_send(struct socket *so, int flags, struct mbuf *m,
  68                                  struct sockaddr *addr, struct mbuf *control,
  69                                  struct proc *p);
  70
  71 extern int      ddp_pru_shutdown(struct socket *so);
  72 extern int      ddp_pru_sockaddr(struct socket *so,
  73                                  struct sockaddr **nam);
  74
  75 /*
  76  * Dummy usrreqs struct created by Ted for FreeBSD 3.x integration.
  77  * Fill in supported functions as appropriate.
  78  */
  79 struct pr_usrreqs ddp_usrreqs = {
  80         ddp_pru_abort,  pru_accept_notsupp, ddp_pru_attach, ddp_pru_bind,
  81         ddp_pru_connect, pru_connect2_notsupp, ddp_pru_control, ddp_pru_detach,
  82         ddp_pru_disconnect, pru_listen_notsupp, ddp_pru_peeraddr, pru_rcvd_notsupp,
  83         pru_rcvoob_notsupp, ddp_pru_send, pru_sense_null, ddp_pru_shutdown,
  84         ddp_pru_sockaddr, sosend, soreceive, pru_sopoll_notsupp
  85 };
  86
  87 extern struct domain atalkdomain;
  88 extern void atalk_dominit(void);
  89
  90 struct protosw atalksw[] = {
  91   { SOCK_RAW,   &atalkdomain,   /*protocol*/ 0, PR_ATOMIC|PR_ADDR,
  92     /*input*/ 0, /*output*/ 0, /*clinput*/ 0, ddp_ctloutput,
  93     /*ousrreq*/ 0,
  94     ddp_init, /*fastto*/ 0, /*slowto*/ 0, /*drain*/ 0,
  95     /*sysctl*/ 0, &ddp_usrreqs,
  96         0, 0, 0, /*lock, unlock, getlock */
  97    {0, 0}, 0, {0} /* filters */
  98   }
  99 };
 100
 101 struct domain atalkdomain =
 102 { AF_APPLETALK,
 103   "appletalk",
 104   atalk_dominit,
 105   0,
 106   0,
 107   atalksw,
 108   0,
 109   0, /* dom_rtattach */
 110   0, 0, /* dom_rtoffset, dom_maxrtkey */
 111   DDP_X_HDR_SIZE, 0,
 112   0, /* domain global mutex */
 113   0,  /* domain flags */
 114   {0, 0} /*reserved[2] */
 115 };
 116
 117 struct domain * atalkdom = &atalkdomain;
 118 lck_mtx_t  *atalk_mutex = NULL;
 119
 120 static int at_saved_lock, at_saved_unlock;
 121
 122 SYSCTL_NODE(_net, PF_APPLETALK, appletalk, CTLFLAG_RW, 0, "AppleTalk Family");
 123
 124 void
 125 atalk_dominit(void)
 126 {
 127         atalk_mutex = atalkdom->dom_mtx;
 128 }
 129
 130 void
 131 atalk_lock()
 132 {
 133         int lr_saved;
 134         lr_saved = (unsigned int) __builtin_return_address(0);
 135
 136         lck_mtx_assert(atalkdom->dom_mtx, LCK_MTX_ASSERT_NOTOWNED);
 137         lck_mtx_lock(atalkdom->dom_mtx);
 138         at_saved_lock = lr_saved;
 139 }
 140
 141 void
 142 atalk_unlock()
 143 {
 144         int lr_saved;
 145         lr_saved = (unsigned int) __builtin_return_address(0);
 146
 147         lck_mtx_assert(atalkdom->dom_mtx, LCK_MTX_ASSERT_OWNED);
 148         at_saved_unlock = lr_saved;
 149         lck_mtx_unlock(atalkdom->dom_mtx);
 150
 151 }
 152
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 156