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Annotation of 43BSDReno/sys/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 is only permitted until one year after the first shipment
        !             6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !             7:  * binary forms are permitted provided that: (1) source distributions retain
        !             8:  * this entire copyright notice and comment, and (2) distributions including
        !             9:  * binaries display the following acknowledgement:  This product includes
        !            10:  * software developed by the University of California, Berkeley and its
        !            11:  * contributors'' in the documentation or other materials provided with the
        !            12:  * distribution and in all advertising materials mentioning features or use
        !            13:  * of this software.  Neither the name of the University nor the names of
        !            14:  * its contributors may be used to endorse or promote products derived from
        !            15:  * this software without specific prior written permission.
        !            16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            19:  *
        !            20:  *     @(#)in_pcb.h    7.6 (Berkeley) 6/28/90
        !            21:  */
        !            22: 
        !            23: /*
        !            24:  * Common structure pcb for internet protocol implementation.
        !            25:  * Here are stored pointers to local and foreign host table
        !            26:  * entries, local and foreign socket numbers, and pointers
        !            27:  * up (to a socket structure) and down (to a protocol-specific)
        !            28:  * control block.
        !            29:  */
        !            30: struct inpcb {
        !            31:        struct  inpcb *inp_next,*inp_prev;
        !            32:                                        /* pointers to other pcb's */
        !            33:        struct  inpcb *inp_head;        /* pointer back to chain of inpcb's
        !            34:                                           for this protocol */
        !            35:        struct  in_addr inp_faddr;      /* foreign host table entry */
        !            36:        u_short inp_fport;              /* foreign port */
        !            37:        struct  in_addr inp_laddr;      /* local host table entry */
        !            38:        u_short inp_lport;              /* local port */
        !            39:        struct  socket *inp_socket;     /* back pointer to socket */
        !            40:        caddr_t inp_ppcb;               /* pointer to per-protocol pcb */
        !            41:        struct  route inp_route;        /* placeholder for routing entry */
        !            42:        int     inp_flags;              /* generic IP/datagram flags */
        !            43:        struct  ip inp_ip;              /* header prototype; should have more */
        !            44:        struct  mbuf *inp_options;      /* IP options */
        !            45: };
        !            46: 
        !            47: /* flags in inp_flags: */
        !            48: #define        INP_RECVOPTS            0x01    /* receive incoming IP options */
        !            49: #define        INP_RECVRETOPTS         0x02    /* receive IP options for reply */
        !            50: #define        INP_RECVDSTADDR         0x04    /* receive IP dst address */
        !            51: #define        INP_CONTROLOPTS         (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR)
        !            52: 
        !            53: #ifdef sotorawcb
        !            54: /*
        !            55:  * Common structure pcb for raw internet protocol access.
        !            56:  * Here are internet specific extensions to the raw control block,
        !            57:  * and space is allocated to the necessary sockaddrs.
        !            58:  */
        !            59: struct raw_inpcb {
        !            60:        struct  rawcb rinp_rcb; /* common control block prefix */
        !            61:        struct  mbuf *rinp_options;     /* IP options */
        !            62:        int     rinp_flags;             /* flags, e.g. raw sockopts */
        !            63: #define        RINPF_HDRINCL   0x1             /* user supplies entire IP header */
        !            64:        struct  sockaddr_in rinp_faddr; /* foreign address */
        !            65:        struct  sockaddr_in rinp_laddr; /* local address */
        !            66:        struct  route rinp_route;       /* placeholder for routing entry */
        !            67: };
        !            68: #endif
        !            69: 
        !            70: #define        INPLOOKUP_WILDCARD      1
        !            71: #define        INPLOOKUP_SETLOCAL      2
        !            72: 
        !            73: #define        sotoinpcb(so)   ((struct inpcb *)(so)->so_pcb)
        !            74: #define        sotorawinpcb(so)        ((struct raw_inpcb *)(so)->so_pcb)
        !            75: 
        !            76: #ifdef KERNEL
        !            77: struct inpcb *in_pcblookup();
        !            78: #endif

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