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Annotation of Net2/netinet/in_pcb.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986, 1990 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)in_pcb.h    7.6 (Berkeley) 6/28/90
        !            34:  */
        !            35: 
        !            36: /*
        !            37:  * Common structure pcb for internet protocol implementation.
        !            38:  * Here are stored pointers to local and foreign host table
        !            39:  * entries, local and foreign socket numbers, and pointers
        !            40:  * up (to a socket structure) and down (to a protocol-specific)
        !            41:  * control block.
        !            42:  */
        !            43: struct inpcb {
        !            44:        struct  inpcb *inp_next,*inp_prev;
        !            45:                                        /* pointers to other pcb's */
        !            46:        struct  inpcb *inp_head;        /* pointer back to chain of inpcb's
        !            47:                                           for this protocol */
        !            48:        struct  in_addr inp_faddr;      /* foreign host table entry */
        !            49:        u_short inp_fport;              /* foreign port */
        !            50:        struct  in_addr inp_laddr;      /* local host table entry */
        !            51:        u_short inp_lport;              /* local port */
        !            52:        struct  socket *inp_socket;     /* back pointer to socket */
        !            53:        caddr_t inp_ppcb;               /* pointer to per-protocol pcb */
        !            54:        struct  route inp_route;        /* placeholder for routing entry */
        !            55:        int     inp_flags;              /* generic IP/datagram flags */
        !            56:        struct  ip inp_ip;              /* header prototype; should have more */
        !            57:        struct  mbuf *inp_options;      /* IP options */
        !            58: };
        !            59: 
        !            60: /* flags in inp_flags: */
        !            61: #define        INP_RECVOPTS            0x01    /* receive incoming IP options */
        !            62: #define        INP_RECVRETOPTS         0x02    /* receive IP options for reply */
        !            63: #define        INP_RECVDSTADDR         0x04    /* receive IP dst address */
        !            64: #define        INP_CONTROLOPTS         (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR)
        !            65: 
        !            66: #ifdef sotorawcb
        !            67: /*
        !            68:  * Common structure pcb for raw internet protocol access.
        !            69:  * Here are internet specific extensions to the raw control block,
        !            70:  * and space is allocated to the necessary sockaddrs.
        !            71:  */
        !            72: struct raw_inpcb {
        !            73:        struct  rawcb rinp_rcb; /* common control block prefix */
        !            74:        struct  mbuf *rinp_options;     /* IP options */
        !            75:        int     rinp_flags;             /* flags, e.g. raw sockopts */
        !            76: #define        RINPF_HDRINCL   0x1             /* user supplies entire IP header */
        !            77:        struct  sockaddr_in rinp_faddr; /* foreign address */
        !            78:        struct  sockaddr_in rinp_laddr; /* local address */
        !            79:        struct  route rinp_route;       /* placeholder for routing entry */
        !            80: };
        !            81: #endif
        !            82: 
        !            83: #define        INPLOOKUP_WILDCARD      1
        !            84: #define        INPLOOKUP_SETLOCAL      2
        !            85: 
        !            86: #define        sotoinpcb(so)   ((struct inpcb *)(so)->so_pcb)
        !            87: #define        sotorawinpcb(so)        ((struct raw_inpcb *)(so)->so_pcb)
        !            88: 
        !            89: #ifdef KERNEL
        !            90: struct inpcb *in_pcblookup();
        !            91: #endif

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