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- /*
- * Bootstrap Protocol (BOOTP). RFC 951.
- */
- /*
- * HISTORY
- *
- * 14 May 1992 David E. Bohman at NeXT
- * Added correct padding to struct nextvend. This is
- * needed for the i386 due to alignment differences wrt
- * the m68k. Also adjusted the size of the array fields
- * because the NeXT vendor area was overflowing the bootp
- * packet.
- */
-
- #define iaddr_t struct in_addr
-
- struct bootp {
- u_char bp_op; /* packet opcode type */
- #define BOOTREQUEST 1
- #define BOOTREPLY 2
- u_char bp_htype; /* hardware addr type */
- u_char bp_hlen; /* hardware addr length */
- u_char bp_hops; /* gateway hops */
- u_long bp_xid; /* transaction ID */
- u_short bp_secs; /* seconds since boot began */
- u_short bp_unused;
- iaddr_t bp_ciaddr; /* client IP address */
- iaddr_t bp_yiaddr; /* 'your' IP address */
- iaddr_t bp_siaddr; /* server IP address */
- iaddr_t bp_giaddr; /* gateway IP address */
- u_char bp_chaddr[16]; /* client hardware address */
- u_char bp_sname[64]; /* server host name */
- u_char bp_file[128]; /* boot file name */
- u_char bp_vend[64]; /* vendor-specific area */
- };
-
- /*
- * UDP port numbers, server and client.
- */
- #define IPPORT_BOOTPS 67
- #define IPPORT_BOOTPC 68
-
- /*
- * "vendor" data permitted for Stanford boot clients.
- */
- struct vend {
- u_char v_magic[4]; /* magic number */
- u_long v_flags; /* flags/opcodes, etc. */
- u_char v_unused[56]; /* currently unused */
- };
- #define VM_STANFORD "STAN" /* v_magic for Stanford */
-
- /* v_flags values */
- #define VF_PCBOOT 1 /* an IBMPC or Mac wants environment info */
- #define VF_HELP 2 /* help me, I'm not registered */
-
- #define NVMAXTEXT 55 /* don't change this, it just fits RFC951 */
- struct nextvend {
- u_char nv_magic[4]; /* Magic number for vendor specificity */
- u_char nv_version; /* NeXT protocol version */
- /*
- * Round the beginning
- * of the union to a 16
- * bit boundary due to
- * struct/union alignment
- * on the m68k.
- */
- unsigned short :0;
- union {
- u_char NV0[58];
- struct {
- u_char NV1_opcode; /* opcode - Version 1 */
- u_char NV1_xid; /* transcation id */
- u_char NV1_text[NVMAXTEXT]; /* text */
- u_char NV1_null; /* null terminator */
- } NV1;
- } nv_U;
- };
- #define nv_unused nv_U.NV0
- #define nv_opcode nv_U.NV1.NV1_opcode
- #define nv_xid nv_U.NV1.NV1_xid
- #define nv_text nv_U.NV1.NV1_text
- #define nv_null nv_U.NV1.NV1_null
-
- /* Magic number */
- #define VM_NEXT "NeXT" /* v_magic for NeXT, Inc. */
-
- /* Opcodes */
- #define BPOP_OK 0
- #define BPOP_QUERY 1
- #define BPOP_QUERY_NE 2
- #define BPOP_ERROR 3
-
- struct bootp_packet {
- struct ip bp_ip;
- struct udphdr bp_udp;
- struct bootp bp_bootp;
- };
-
- #define BOOTP_PKTSIZE (sizeof (struct bootp_packet))
-
- /* backoffs must be masks */
- #define BOOTP_MIN_BACKOFF 0x7ff /* 2.048 sec */
- #define BOOTP_MAX_BACKOFF 0xffff /* 65.535 sec */
- #define BOOTP_RETRY 6 /* # retries */
-
-