1 /* 2 * Copied from LiMon - BOOTP. 3 * 4 * Copyright 1994, 1995, 2000 Neil Russell. 5 * (See License) 6 * Copyright 2000 Paolo Scaffardi 7 */ 8 9 #ifndef __BOOTP_H__ 10 #define __BOOTP_H__ 11 12 #ifndef __NET_H__ 13 #include <net.h> 14 #endif /* __NET_H__ */ 15 16 /**********************************************************************/ 17 18 /* 19 * BOOTP header. 20 */ 21 #if defined(CONFIG_CMD_DHCP) 22 /* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */ 23 #define OPT_FIELD_SIZE 312 24 #if defined(CONFIG_BOOTP_VENDOREX) 25 extern u8 *dhcp_vendorex_prep(u8 *e); /*rtn new e after add own opts. */ 26 extern u8 *dhcp_vendorex_proc(u8 *e); /*rtn next e if mine,else NULL */ 27 #endif 28 #else 29 #define OPT_FIELD_SIZE 64 30 #endif 31 32 struct Bootp_t { 33 uchar bp_op; /* Operation */ 34 # define OP_BOOTREQUEST 1 35 # define OP_BOOTREPLY 2 36 uchar bp_htype; /* Hardware type */ 37 # define HWT_ETHER 1 38 uchar bp_hlen; /* Hardware address length */ 39 # define HWL_ETHER 6 40 uchar bp_hops; /* Hop count (gateway thing) */ 41 ulong bp_id; /* Transaction ID */ 42 ushort bp_secs; /* Seconds since boot */ 43 ushort bp_spare1; /* Alignment */ 44 IPaddr_t bp_ciaddr; /* Client IP address */ 45 IPaddr_t bp_yiaddr; /* Your (client) IP address */ 46 IPaddr_t bp_siaddr; /* Server IP address */ 47 IPaddr_t bp_giaddr; /* Gateway IP address */ 48 uchar bp_chaddr[16]; /* Client hardware address */ 49 char bp_sname[64]; /* Server host name */ 50 char bp_file[128]; /* Boot file name */ 51 char bp_vend[OPT_FIELD_SIZE]; /* Vendor information */ 52 }; 53 54 #define BOOTP_HDR_SIZE sizeof(struct Bootp_t) 55 56 /**********************************************************************/ 57 /* 58 * Global functions and variables. 59 */ 60 61 /* bootp.c */ 62 extern ulong BootpID; /* ID of cur BOOTP request */ 63 extern char BootFile[128]; /* Boot file name */ 64 extern int BootpTry; 65 66 67 /* Send a BOOTP request */ 68 extern void BootpRequest(void); 69 70 /****************** DHCP Support *********************/ 71 extern void DhcpRequest(void); 72 73 /* DHCP States */ 74 typedef enum { INIT, 75 INIT_REBOOT, 76 REBOOTING, 77 SELECTING, 78 REQUESTING, 79 REBINDING, 80 BOUND, 81 RENEWING } dhcp_state_t; 82 83 #define DHCP_DISCOVER 1 84 #define DHCP_OFFER 2 85 #define DHCP_REQUEST 3 86 #define DHCP_DECLINE 4 87 #define DHCP_ACK 5 88 #define DHCP_NAK 6 89 #define DHCP_RELEASE 7 90 91 #define SELECT_TIMEOUT 3000UL /* Milliseconds to wait for offers */ 92 93 /**********************************************************************/ 94 95 #endif /* __BOOTP_H__ */ 96