bsd/netat/at_pcb.h

   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) 1997-1999 Apple Computer, Inc.
  24  *      All Rights Reserved.
  25  */
  26 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  27 /*
  28  * Copyright (c) 1982, 1986, 1990, 1993
  29  *      The Regents of the University of California.  All rights reserved.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. All advertising materials mentioning features or use of this software
  40  *    must display the following acknowledgement:
  41  *      This product includes software developed by the University of
  42  *      California, Berkeley and its contributors.
  43  * 4. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  */
  59
  60 /* at_pcb.h */
  61
  62 /*
  63  * Common structure pcb for internet protocol implementation.
  64  * Here are stored pointers to local and foreign host table
  65  * entries, local and foreign socket numbers, and pointers
  66  * up (to a socket structure) and down (to a protocol-specific)
  67  * control block.
  68  */
  69 struct atpcb {
  70         struct atpcb    *atpcb_next,    /* pointers to other pcb's */
  71                         *atpcb_prev,
  72                         *atpcb_head;    /* pointer back to chain of atpcb's
  73                                            for this protocol */
  74         struct socket   *atpcb_socket;  /* back pointer to socket */
  75         u_char          ddptype,        /* DDP type */
  76                         lport,          /* local DDP socket */
  77                         rport;          /* remote DDP socket */
  78         struct at_addr  laddr,          /* local net and node */
  79                         raddr;          /* remote net and node */
  80         int             ddp_flags;      /* generic IP/datagram flags */
  81         caddr_t         at_ppcb;        /* pointer to per-protocol pcb */
  82
  83   /* from the gref structure */
  84
  85         void *info;
  86         gbuf_t *ichead;
  87         gbuf_t *ictail;
  88         gbuf_t *rdhead;
  89         gbuf_t *rdtail;
  90         unsigned char   proto;          /* old-style ATPROTO_* */
  91         unsigned char  errno;
  92         unsigned short sevents;
  93         int pid;
  94         atlock_t lock;
  95         atevent_t event;
  96         atevent_t iocevent;
  97         int (*writeable)();
  98         int (*readable)();
  99         struct selinfo si;      /* BSD 4.4 selinfo structure for
 100                                    selrecord/selwakeup */
 101 };
 102
 103 #define sotoatpcb(so)((struct atpcb *)(so)->so_pcb)
 104
 105 /* ddp_flags */
 106 #define DDPFLG_CHKSUM    0x01   /* DDP checksums to be used on this connection */
 107 #define DDPFLG_SLFSND    0x02   /* packets sent to the cable-multicast address
 108                                    on this socket should be looped back */
 109 #define DDPFLG_HDRINCL   0x08   /* user supplies entire DDP header */
 110 #define DDPFLG_STRIPHDR 0x200   /* drop DDP header on receive (raw) */
 111
 112 #ifdef KERNEL
 113 typedef struct atpcb gref_t;
 114
 115 int     at_pcballoc __P((struct socket *, struct atpcb *));
 116 int     at_pcbdetach __P((struct atpcb *));
 117 int     at_pcbbind __P((struct atpcb *, struct sockaddr *));
 118 #endif