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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986, 1989 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:  *     @(#)udp_var.h   7.7 (Berkeley) 6/28/90
        !            34:  */
        !            35: 
        !            36: /*
        !            37:  * UDP kernel structures and variables.
        !            38:  */
        !            39: struct udpiphdr {
        !            40:        struct  ipovly ui_i;            /* overlaid ip structure */
        !            41:        struct  udphdr ui_u;            /* udp header */
        !            42: };
        !            43: #define        ui_next         ui_i.ih_next
        !            44: #define        ui_prev         ui_i.ih_prev
        !            45: #define        ui_x1           ui_i.ih_x1
        !            46: #define        ui_pr           ui_i.ih_pr
        !            47: #define        ui_len          ui_i.ih_len
        !            48: #define        ui_src          ui_i.ih_src
        !            49: #define        ui_dst          ui_i.ih_dst
        !            50: #define        ui_sport        ui_u.uh_sport
        !            51: #define        ui_dport        ui_u.uh_dport
        !            52: #define        ui_ulen         ui_u.uh_ulen
        !            53: #define        ui_sum          ui_u.uh_sum
        !            54: 
        !            55: struct udpstat {
        !            56:                                /* input statistics: */
        !            57:        int     udps_ipackets;          /* total input packets */
        !            58:        int     udps_hdrops;            /* packet shorter than header */
        !            59:        int     udps_badsum;            /* checksum error */
        !            60:        int     udps_badlen;            /* data length larger than packet */
        !            61:        int     udps_noport;            /* no socket on port */
        !            62:        int     udps_noportbcast;       /* of above, arrived as broadcast */
        !            63:        int     udps_fullsock;          /* not delivered, input socket full */
        !            64:        int     udpps_pcbcachemiss;     /* input packets missing pcb cache */
        !            65:                                /* output statistics: */
        !            66:        int     udps_opackets;          /* total output packets */
        !            67: };
        !            68: 
        !            69: #define        UDP_TTL         30      /* default time to live for UDP packets */
        !            70: 
        !            71: #ifdef KERNEL
        !            72: struct inpcb udb;
        !            73: struct udpstat udpstat;
        !            74: #endif

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