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Annotation of kernel/bsd/netinet/in_pcb.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
        !            26: /*
        !            27:  * Copyright (c) 1982, 1986, 1990, 1993
        !            28:  *     The Regents of the University of California.  All rights reserved.
        !            29:  *
        !            30:  * Redistribution and use in source and binary forms, with or without
        !            31:  * modification, are permitted provided that the following conditions
        !            32:  * are met:
        !            33:  * 1. Redistributions of source code must retain the above copyright
        !            34:  *    notice, this list of conditions and the following disclaimer.
        !            35:  * 2. Redistributions in binary form must reproduce the above copyright
        !            36:  *    notice, this list of conditions and the following disclaimer in the
        !            37:  *    documentation and/or other materials provided with the distribution.
        !            38:  * 3. All advertising materials mentioning features or use of this software
        !            39:  *    must display the following acknowledgement:
        !            40:  *     This product includes software developed by the University of
        !            41:  *     California, Berkeley and its contributors.
        !            42:  * 4. Neither the name of the University nor the names of its contributors
        !            43:  *    may be used to endorse or promote products derived from this software
        !            44:  *    without specific prior written permission.
        !            45:  *
        !            46:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            47:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            48:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            49:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            50:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            51:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            52:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            53:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            54:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            55:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            56:  * SUCH DAMAGE.
        !            57:  *
        !            58:  *     @(#)in_pcb.h    8.1 (Berkeley) 6/10/93
        !            59:  */
        !            60: 
        !            61: 
        !            62: struct inpcb_hash_str {
        !            63:        struct  inpcb           *(*hash_array)[];
        !            64:        u_long                  hash_mask;
        !            65:        u_long                  n_elements;
        !            66: };
        !            67: 
        !            68: 
        !            69: /*
        !            70:  * Common structure pcb for internet protocol implementation.
        !            71:  * Here are stored pointers to local and foreign host table
        !            72:  * entries, local and foreign socket numbers, and pointers
        !            73:  * up (to a socket structure) and down (to a protocol-specific)
        !            74:  * control block.
        !            75:  */
        !            76: struct inpcb {
        !            77:        struct  inpcb *inp_next,*inp_prev;
        !            78:                                        /* pointers to other pcb's */
        !            79:        struct  inpcb *inp_head;        /* pointer back to chain of inpcb's
        !            80:                                           for this protocol */
        !            81:        struct  in_addr inp_faddr;      /* foreign host table entry */
        !            82:        u_short inp_fport;              /* foreign port */
        !            83:        struct  in_addr inp_laddr;      /* local host table entry */
        !            84:        u_short inp_lport;              /* local port */
        !            85:        struct  socket *inp_socket;     /* back pointer to socket */
        !            86:        caddr_t inp_ppcb;               /* pointer to per-protocol pcb */
        !            87:        caddr_t inp_saved_ppcb;         /* place to save pointer while cached */
        !            88:        struct  route inp_route;        /* placeholder for routing entry */
        !            89:        int     inp_flags;              /* generic IP/datagram flags */
        !            90:        struct  ip inp_ip;              /* header prototype; should have more */
        !            91:        struct  mbuf *inp_options;      /* IP options */
        !            92:        struct  ip_moptions *inp_moptions; /* IP multicast options */
        !            93:        struct  inpcb_hash_str *hash_str;
        !            94:        struct  inpcb_hash_str *lport_hash_str;
        !            95:        struct  inpcb *hash_next;
        !            96:        struct  inpcb *hash_prev;
        !            97:        u_long  hash_element;
        !            98:        struct  inpcb *lport_hash_next;
        !            99:        struct  inpcb *lport_hash_prev;
        !           100:        u_long  lport_hash_element;
        !           101: };
        !           102: 
        !           103: /* flags in inp_flags: */
        !           104: #define        INP_RECVOPTS            0x01    /* receive incoming IP options */
        !           105: #define        INP_RECVRETOPTS         0x02    /* receive IP options for reply */
        !           106: #define        INP_RECVDSTADDR         0x04    /* receive IP dst address */
        !           107: #define        INP_CONTROLOPTS         (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR)
        !           108: #define        INP_HDRINCL             0x08    /* user supplies entire IP header */
        !           109: #define INP_NOLOOKUP            0x10    /* don't need to re-issue lookup in 'in_pcbconnect' */
        !           110:                                         /* we've already failed to find this address in tcp_input */ 
        !           111: 
        !           112: #define        INPLOOKUP_WILDCARD      1
        !           113: #define        INPLOOKUP_SETLOCAL      2
        !           114: 
        !           115: #define        sotoinpcb(so)   ((struct inpcb *)(so)->so_pcb)
        !           116: 
        !           117: #ifdef _KERNEL
        !           118: int     in_losing __P((struct inpcb *));
        !           119: int     in_pcballoc __P((struct socket *, struct inpcb *, 
        !           120:                          struct inpcb_hash_str *, struct inpcb_hash_str *));
        !           121: int     in_pcbbind __P((struct inpcb *, struct mbuf *));
        !           122: int     in_pcbconnect __P((struct inpcb *, struct mbuf *));
        !           123: int     in_pcbdetach __P((struct inpcb *));
        !           124: int     in_pcbdisconnect __P((struct inpcb *));
        !           125: struct inpcb *
        !           126:         in_pcblookup __P((struct inpcb *,
        !           127:            struct in_addr, u_int, struct in_addr, u_int, int));
        !           128: int     in_pcbnotify __P((struct inpcb *, struct sockaddr *,
        !           129:            u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
        !           130: void    in_rtchange __P((struct inpcb *, int));
        !           131: int     in_setpeeraddr __P((struct inpcb *, struct mbuf *));
        !           132: int     in_setsockaddr __P((struct inpcb *, struct mbuf *));
        !           133: void    lport_hash_remove __P((struct inpcb *));
        !           134: void    lport_hash_insert __P((struct inpcb *));
        !           135: void    hash_remove __P((struct inpcb *));
        !           136: void    hash_insert __P((struct inpcb *));
        !           137: 
        !           138: 
        !           139: struct inpcb *inet_hash1 __P((struct inpcb_hash_str *, u_long, u_short,        u_long, u_short));
        !           140: struct inpcb *inet_lport_hash1 __P((struct inpcb_hash_str *, u_short));
        !           141: 
        !           142: struct inpcb *
        !           143: hash_in_pcbwild __P((struct inpcb *, struct in_addr, u_int, struct in_addr, u_int, int));
        !           144: 
        !           145: struct inpcb *
        !           146: lport_hash_in_pcbwild __P((struct inpcb *, struct in_addr, u_int, struct in_addr, u_int, int));
        !           147: 
        !           148: struct inpcb *
        !           149:         hash_in_pcblookup __P((struct inpcb *,
        !           150:            struct in_addr, u_int, struct in_addr, u_int));
        !           151: 
        !           152: #endif

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