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Annotation of XNU/osfmk/kdp/kdp_udp.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: 
        !            23: #include <libkern/OSByteOrder.h>   /* OSSwap functions */
        !            24: 
        !            25: #define     ETHERMTU        1500
        !            26: #define     ETHERHDRSIZE    14
        !            27: #define     ETHERCRC        4
        !            28: #define     KDP_MAXPACKET   (ETHERHDRSIZE + ETHERMTU + ETHERCRC)
        !            29: 
        !            30: struct in_addr {
        !            31:         u_long s_addr;
        !            32: };
        !            33: 
        !            34: struct ether_addr {
        !            35:         u_char ether_addr_octet[6];
        !            36: };
        !            37: 
        !            38: typedef struct ether_addr enet_addr_t;
        !            39: 
        !            40: struct ipovly {
        !            41:         caddr_t ih_next, ih_prev;       /* for protocol sequence q's */
        !            42:         u_char  ih_x1;                  /* (unused) */
        !            43:         u_char  ih_pr;                  /* protocol */
        !            44:         short   ih_len;                 /* protocol length */
        !            45:         struct  in_addr ih_src;         /* source internet address */
        !            46:         struct  in_addr ih_dst;         /* destination internet address */
        !            47: };
        !            48: 
        !            49: struct udphdr {
        !            50:         u_short uh_sport;               /* source port */
        !            51:         u_short uh_dport;               /* destination port */
        !            52:         short   uh_ulen;                /* udp length */
        !            53:         u_short uh_sum;                 /* udp checksum */
        !            54: };
        !            55: 
        !            56: struct  udpiphdr {
        !            57:         struct  ipovly ui_i;            /* overlaid ip structure */
        !            58:         struct  udphdr ui_u;            /* udp header */
        !            59: };
        !            60: #define ui_next         ui_i.ih_next
        !            61: #define ui_prev         ui_i.ih_prev
        !            62: #define ui_x1           ui_i.ih_x1
        !            63: #define ui_pr           ui_i.ih_pr
        !            64: #define ui_len          ui_i.ih_len
        !            65: #define ui_src          ui_i.ih_src
        !            66: #define ui_dst          ui_i.ih_dst
        !            67: #define ui_sport        ui_u.uh_sport
        !            68: #define ui_dport        ui_u.uh_dport
        !            69: #define ui_ulen         ui_u.uh_ulen
        !            70: #define ui_sum          ui_u.uh_sum
        !            71: 
        !            72: struct ip { 
        !            73:        union {
        !            74:                u_long ip_w;
        !            75:                struct {
        !            76:                        unsigned int
        !            77: #if _BIG_ENDIAN == __LITTLE_ENDIAN__
        !            78:                        ip_xhl:4,       /* header length */   
        !            79:                        ip_xv:4,                /* version */
        !            80:                        ip_xtos:8,      /* type of service */
        !            81:                        ip_xlen:16;     /* total length */
        !            82: #endif
        !            83: #if _BIG_ENDIAN == __BIG_ENDIAN__
        !            84:                        ip_xv:4,                 /* version */
        !            85:                        ip_xhl:4,                /* header length */
        !            86:                        ip_xtos:8,               /* type of service */
        !            87:                        ip_xlen:16;               /* total length */
        !            88: #endif
        !            89:                } ip_x;
        !            90:        } ip_vhltl;
        !            91:         u_short ip_id;                  /* identification */
        !            92:         short   ip_off;                 /* fragment offset field */
        !            93: #define IP_DF 0x4000                    /* dont fragment flag */
        !            94: #define IP_MF 0x2000                    /* more fragments flag */
        !            95: #define IP_OFFMASK 0x1fff               /* mask for fragmenting bits */
        !            96:         u_char  ip_ttl;                 /* time to live */
        !            97:         u_char  ip_p;                   /* protocol */
        !            98:         u_short ip_sum;                 /* checksum */
        !            99:         struct  in_addr ip_src,ip_dst;  /* source and dest address */
        !           100: };
        !           101: #define ip_v   ip_vhltl.ip_x.ip_xv
        !           102: #define ip_hl  ip_vhltl.ip_x.ip_xhl
        !           103: #define ip_tos ip_vhltl.ip_x.ip_xtos
        !           104: #define ip_len ip_vhltl.ip_x.ip_xlen
        !           105: 
        !           106: #define    IPPROTO_UDP     17
        !           107: #define    IPVERSION       4
        !           108: 
        !           109: struct  ether_header {
        !           110:         u_char  ether_dhost[6];
        !           111:         u_char  ether_shost[6];
        !           112:         u_short ether_type;
        !           113: };
        !           114: 
        !           115: typedef struct ether_header ether_header_t;
        !           116: 
        !           117: #define ETHERTYPE_IP       0x0800  /* IP protocol */
        !           118: 
        !           119: #define ntohs(x)           OSSwapBigToHostInt16(x)
        !           120: #define htons(x)           OSSwapHostToBigInt16(x)

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