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Annotation of kernel/bsd/netinet/udp_var.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, 1989, 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:  *     @(#)udp_var.h   8.1 (Berkeley) 6/10/93
        !            59:  */
        !            60: 
        !            61: /*
        !            62:  * UDP kernel structures and variables.
        !            63:  */
        !            64: struct udpiphdr {
        !            65:        struct  ipovly ui_i;            /* overlaid ip structure */
        !            66:        struct  udphdr ui_u;            /* udp header */
        !            67: };
        !            68: #define        ui_next         ui_i.ih_next
        !            69: #define        ui_prev         ui_i.ih_prev
        !            70: #define        ui_x1           ui_i.ih_x1
        !            71: #define        ui_pr           ui_i.ih_pr
        !            72: #define        ui_len          ui_i.ih_len
        !            73: #define        ui_src          ui_i.ih_src
        !            74: #define        ui_dst          ui_i.ih_dst
        !            75: #define        ui_sport        ui_u.uh_sport
        !            76: #define        ui_dport        ui_u.uh_dport
        !            77: #define        ui_ulen         ui_u.uh_ulen
        !            78: #define        ui_sum          ui_u.uh_sum
        !            79: 
        !            80: struct udpstat {
        !            81:                                /* input statistics: */
        !            82:        u_long  udps_ipackets;          /* total input packets */
        !            83:        u_long  udps_hdrops;            /* packet shorter than header */
        !            84:        u_long  udps_badsum;            /* checksum error */
        !            85:        u_long  udps_badlen;            /* data length larger than packet */
        !            86:        u_long  udps_noport;            /* no socket on port */
        !            87:        u_long  udps_noportbcast;       /* of above, arrived as broadcast */
        !            88:        u_long  udps_fullsock;          /* not delivered, input socket full */
        !            89:        u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
        !            90:                                /* output statistics: */
        !            91:        u_long  udps_opackets;          /* total output packets */
        !            92: };
        !            93: 
        !            94: /*
        !            95:  * Names for UDP sysctl objects
        !            96:  */
        !            97: #define        UDPCTL_CHECKSUM         1       /* checksum UDP packets */
        !            98: #define UDPCTL_MAXID           2
        !            99: 
        !           100: #define UDPCTL_NAMES { \
        !           101:        { 0, 0 }, \
        !           102:        { "checksum", CTLTYPE_INT }, \
        !           103: }
        !           104: 
        !           105: #ifdef _KERNEL
        !           106: extern struct  inpcb udb;
        !           107: extern struct  udpstat udpstat;
        !           108: 
        !           109: void    udp_ctlinput __P((int, struct sockaddr *, struct ip *));
        !           110: void    udp_init __P((void));
        !           111: void    udp_input __P((struct mbuf *, int));
        !           112: int     udp_output __P((struct inpcb *,
        !           113:            struct mbuf *, struct mbuf *, struct mbuf *));
        !           114: int     udp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
        !           115: int     udp_usrreq __P((struct socket *,
        !           116:            int, struct mbuf *, struct mbuf *, struct mbuf *));
        !           117: #endif

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