Annotation of XNU/bsd/netat/at_pcb.h, revision 1.1

1.1     ! root        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_SLFSNDOFF 0x08  /* packets sent to the cable-multicast address
        !           108:                                   on this socket should not 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: void    at_setpeeraddr __P((struct atpcb *, struct sockaddr *));
        !           119: void    at_setsockaddr __P((struct atpcb *, struct sockaddr *));
        !           120: #endif 

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