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 void atalk_dominit();
  75
  76 /*
  77  * Dummy usrreqs struct created by Ted for FreeBSD 3.x integration.
  78  * Fill in supported functions as appropriate.
  79  */
  80 struct pr_usrreqs ddp_usrreqs = {
  81         ddp_pru_abort,  pru_accept_notsupp, ddp_pru_attach, ddp_pru_bind,
  82         ddp_pru_connect, pru_connect2_notsupp, ddp_pru_control, ddp_pru_detach,
  83         ddp_pru_disconnect, pru_listen_notsupp, ddp_pru_peeraddr, pru_rcvd_notsupp,
  84         pru_rcvoob_notsupp, ddp_pru_send, pru_sense_null, ddp_pru_shutdown,
  85         ddp_pru_sockaddr, sosend, soreceive, pru_sopoll_notsupp
  86 };
  87
  88 struct domain atalkdomain;
  89 struct protosw atalksw[] = {
  90   { SOCK_RAW,   &atalkdomain,   /*protocol*/ 0, PR_ATOMIC|PR_ADDR,
  91     /*input*/ 0, /*output*/ 0, /*clinput*/ 0, ddp_ctloutput,
  92     /*ousrreq*/ 0,
  93     ddp_init, /*fastto*/ 0, /*slowto*/ 0, /*drain*/ 0,
  94     /*sysctl*/ 0, &ddp_usrreqs,
  95         0, 0, 0
  96   }
  97 };
  98
  99 struct domain atalkdomain =
 100 { AF_APPLETALK, "appletalk", atalk_dominit, 0, 0,
 101   atalksw, 0,
 102   0, 0, 0,
 103   DDP_X_HDR_SIZE, 0
 104 };
 105
 106 struct domain * atalkdom = &atalkdomain;
 107 lck_mtx_t  *atalk_mutex = NULL;
 108
 109 SYSCTL_NODE(_net, PF_APPLETALK, appletalk, CTLFLAG_RW, 0, "AppleTalk Family");
 110
 111 void
 112 atalk_dominit()
 113 {
 114         atalk_mutex = atalkdom->dom_mtx;
 115 }
 116
 117 void
 118 atalk_lock()
 119 {
 120         int error = 0, lr, lr_saved;
 121 #ifdef __ppc__
 122         __asm__ volatile("mflr %0" : "=r" (lr));
 123         lr_saved = lr;
 124 #endif
 125         lck_mtx_assert(atalkdom->dom_mtx, LCK_MTX_ASSERT_NOTOWNED);
 126         lck_mtx_lock(atalkdom->dom_mtx);
 127 }
 128
 129 void
 130 atalk_unlock()
 131 {
 132         int error = 0, lr, lr_saved;
 133 #ifdef __ppc__
 134         __asm__ volatile("mflr %0" : "=r" (lr));
 135         lr_saved = lr;
 136 #endif
 137         lck_mtx_assert(atalkdom->dom_mtx, LCK_MTX_ASSERT_OWNED);
 138         lck_mtx_unlock(atalkdom->dom_mtx);
 139
 140 }
 141
 142
 143
 144
 145