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Annotation of Net2/arch/i386/netboot/inet.h, revision 1.1

1.1     ! root        1: /* netboot
        !             2:  *
        !             3:  * inet.h,v
        !             4:  * Revision 1.1  1993/07/08  16:03:59  brezak
        !             5:  * Diskless boot prom code from Jim McKim ([email protected])
        !             6:  *
        !             7:  * Revision 1.1.1.1  1993/05/28  11:41:07  mckim
        !             8:  * Initial version.
        !             9:  *
        !            10:  *
        !            11:  * source in this file came from
        !            12:  * the Mach ethernet boot written by Leendert van Doorn.
        !            13:  *
        !            14:  * Various UDP/IP definitions (see RFC 768, and 791)
        !            15:  */
        !            16: 
        !            17: /* generic IP address */
        !            18: #define        IP_ANYADDR      (ipaddr_t)0     /* IP any address */
        !            19: #define        IP_BCASTADDR    (ipaddr_t)0xffffffff    /* IP broadcast address */
        !            20: 
        !            21: /* some well defined protocols/ports */
        !            22: #define        IP_PROTO_UDP    17              /* user datagram protocol */
        !            23: #define        IP_PORT_TFTP    69              /* trivial FTP port */
        !            24: 
        !            25: /* internet address type */
        !            26: typedef u_long ipaddr_t;
        !            27: 
        !            28: /* internet address type (only used for printing address) */
        !            29: typedef union {
        !            30:     ipaddr_t a;
        !            31:     struct { u_char a0, a1, a2, a3; } s;
        !            32: } inetaddr_t;
        !            33: 
        !            34: /*
        !            35:  * Structure of an internet header (without options)
        !            36:  */
        !            37: typedef struct {
        !            38:     u_char     ip_vhl;         /* version and header length */
        !            39: #define        IP_VERSION      4       /* current version number */
        !            40:     u_char     ip_tos;         /* type of service */
        !            41:     u_short    ip_len;         /* total length */
        !            42:     u_short    ip_id;          /* identification */
        !            43:     u_short    ip_off;         /* fragment offset field */
        !            44:     u_char     ip_ttl;         /* time to live */
        !            45: #define        IP_FRAGTTL      60      /* time to live for frags */
        !            46:     u_char     ip_p;           /* protocol */
        !            47:     u_short    ip_sum;         /* checksum */
        !            48:     ipaddr_t   ip_src;         /* source address */
        !            49:     ipaddr_t   ip_dst;         /* destination address */
        !            50: } iphdr_t;
        !            51: 
        !            52: /*
        !            53:  * Structure of an UDP header
        !            54:  */
        !            55: typedef struct {
        !            56:     u_short    uh_sport;       /* source port */
        !            57:     u_short    uh_dport;       /* destination port */
        !            58:     u_short    uh_len;         /* udp length */
        !            59:     u_short    uh_sum;         /* udp checksum */
        !            60: } udphdr_t;
        !            61: 
        !            62: /* these are actually defined in arp.c */
        !            63: extern ipaddr_t ip_myaddr;     /* my own IP address */
        !            64: extern ipaddr_t ip_gateway;    /* gateway's IP address */
        !            65: 
        !            66: void IpPrintAddr(ipaddr_t);

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