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Annotation of Net2/arch/i386/netboot/inet.h, revision 1.1.1.1

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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