Return to ip_var.h CVS log

Up to [CSRG BSD Unix] / 43BSDReno / sys / netinet

Annotation of 43BSDReno/sys/netinet/ip_var.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 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:  *     @(#)ip_var.h    7.7 (Berkeley) 6/28/90
        !            21:  */
        !            22: 
        !            23: /*
        !            24:  * Overlay for ip header used by other protocols (tcp, udp).
        !            25:  */
        !            26: struct ipovly {
        !            27:        caddr_t ih_next, ih_prev;       /* for protocol sequence q's */
        !            28:        u_char  ih_x1;                  /* (unused) */
        !            29:        u_char  ih_pr;                  /* protocol */
        !            30:        short   ih_len;                 /* protocol length */
        !            31:        struct  in_addr ih_src;         /* source internet address */
        !            32:        struct  in_addr ih_dst;         /* destination internet address */
        !            33: };
        !            34: 
        !            35: /*
        !            36:  * Ip reassembly queue structure.  Each fragment
        !            37:  * being reassembled is attached to one of these structures.
        !            38:  * They are timed out after ipq_ttl drops to 0, and may also
        !            39:  * be reclaimed if memory becomes tight.
        !            40:  */
        !            41: struct ipq {
        !            42:        struct  ipq *next,*prev;        /* to other reass headers */
        !            43:        u_char  ipq_ttl;                /* time for reass q to live */
        !            44:        u_char  ipq_p;                  /* protocol of this fragment */
        !            45:        u_short ipq_id;                 /* sequence id for reassembly */
        !            46:        struct  ipasfrag *ipq_next,*ipq_prev;
        !            47:                                        /* to ip headers of fragments */
        !            48:        struct  in_addr ipq_src,ipq_dst;
        !            49: };
        !            50: 
        !            51: /*
        !            52:  * Ip header, when holding a fragment.
        !            53:  *
        !            54:  * Note: ipf_next must be at same offset as ipq_next above
        !            55:  */
        !            56: struct ipasfrag {
        !            57: #if BYTE_ORDER == LITTLE_ENDIAN 
        !            58:        u_char  ip_hl:4,
        !            59:                ip_v:4;
        !            60: #endif
        !            61: #if BYTE_ORDER == BIG_ENDIAN 
        !            62:        u_char  ip_v:4,
        !            63:                ip_hl:4;
        !            64: #endif
        !            65:        u_char  ipf_mff;                /* copied from (ip_off&IP_MF) */
        !            66:        short   ip_len;
        !            67:        u_short ip_id;
        !            68:        short   ip_off;
        !            69:        u_char  ip_ttl;
        !            70:        u_char  ip_p;
        !            71:        u_short ip_sum;
        !            72:        struct  ipasfrag *ipf_next;     /* next fragment */
        !            73:        struct  ipasfrag *ipf_prev;     /* previous fragment */
        !            74: };
        !            75: 
        !            76: /*
        !            77:  * Structure stored in mbuf in inpcb.ip_options
        !            78:  * and passed to ip_output when ip options are in use.
        !            79:  * The actual length of the options (including ipopt_dst)
        !            80:  * is in m_len.
        !            81:  */
        !            82: #define MAX_IPOPTLEN   40
        !            83: 
        !            84: struct ipoption {
        !            85:        struct  in_addr ipopt_dst;      /* first-hop dst if source routed */
        !            86:        char    ipopt_list[MAX_IPOPTLEN];       /* options proper */
        !            87: };
        !            88: 
        !            89: struct ipstat {
        !            90:        long    ips_total;              /* total packets received */
        !            91:        long    ips_badsum;             /* checksum bad */
        !            92:        long    ips_tooshort;           /* packet too short */
        !            93:        long    ips_toosmall;           /* not enough data */
        !            94:        long    ips_badhlen;            /* ip header length < data size */
        !            95:        long    ips_badlen;             /* ip length < ip header length */
        !            96:        long    ips_fragments;          /* fragments received */
        !            97:        long    ips_fragdropped;        /* frags dropped (dups, out of space) */
        !            98:        long    ips_fragtimeout;        /* fragments timed out */
        !            99:        long    ips_forward;            /* packets forwarded */
        !           100:        long    ips_cantforward;        /* packets rcvd for unreachable dest */
        !           101:        long    ips_redirectsent;       /* packets forwarded on same net */
        !           102:        long    ips_noproto;            /* unknown or unsupported protocol */
        !           103:        long    ips_delivered;          /* packets consumed here */
        !           104:        long    ips_localout;           /* total ip packets generated here */
        !           105:        long    ips_odropped;           /* lost packets due to nobufs, etc. */
        !           106:        long    ips_reassembled;        /* total packets reassembled ok */
        !           107:        long    ips_fragmented;         /* output packets fragmented ok */
        !           108:        long    ips_ofragments;         /* output fragments created */
        !           109:        long    ips_cantfrag;           /* don't fragment flag was set, etc. */
        !           110: };
        !           111: 
        !           112: #ifdef KERNEL
        !           113: /* flags passed to ip_output as last parameter */
        !           114: #define        IP_FORWARDING           0x1             /* most of ip header exists */
        !           115: #define        IP_ROUTETOIF            SO_DONTROUTE    /* bypass routing tables */
        !           116: #define        IP_ALLOWBROADCAST       SO_BROADCAST    /* can send broadcast packets */
        !           117: 
        !           118: struct ipstat  ipstat;
        !           119: struct ipq     ipq;                    /* ip reass. queue */
        !           120: u_short        ip_id;                          /* ip packet ctr, for ids */
        !           121: 
        !           122: struct mbuf *ip_srcroute();
        !           123: #endif

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.