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Annotation of XNU/osfmk/kdp/kdp_udp.h, revision 1.1.1.1

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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