1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copied from LiMon - BOOTP. 4 * 5 * Copyright 1994, 1995, 2000 Neil Russell. 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 #define PORT_BOOTPS 67 /* BOOTP server UDP port */ 19 #define PORT_BOOTPC 68 /* BOOTP client UDP port */ 20 21 /* 22 * BOOTP header. 23 */ 24 #if defined(CONFIG_CMD_DHCP) 25 /* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */ 26 #define OPT_FIELD_SIZE 312 27 #if defined(CONFIG_BOOTP_VENDOREX) 28 extern u8 *dhcp_vendorex_prep(u8 *e); /*rtn new e after add own opts. */ 29 extern u8 *dhcp_vendorex_proc(u8 *e); /*rtn next e if mine,else NULL */ 30 #endif 31 #else 32 #define OPT_FIELD_SIZE 64 33 #endif 34 35 struct bootp_hdr { 36 u8 bp_op; /* Operation */ 37 # define OP_BOOTREQUEST 1 38 # define OP_BOOTREPLY 2 39 u8 bp_htype; /* Hardware type */ 40 # define HWT_ETHER 1 41 u8 bp_hlen; /* Hardware address length */ 42 # define HWL_ETHER 6 43 u8 bp_hops; /* Hop count (gateway thing) */ 44 u32 bp_id; /* Transaction ID */ 45 u16 bp_secs; /* Seconds since boot */ 46 u16 bp_spare1; /* Alignment */ 47 struct in_addr bp_ciaddr; /* Client IP address */ 48 struct in_addr bp_yiaddr; /* Your (client) IP address */ 49 struct in_addr bp_siaddr; /* Server IP address */ 50 struct in_addr bp_giaddr; /* Gateway IP address */ 51 u8 bp_chaddr[16]; /* Client hardware address */ 52 char bp_sname[64]; /* Server host name */ 53 char bp_file[128]; /* Boot file name */ 54 char bp_vend[OPT_FIELD_SIZE]; /* Vendor information */ 55 } __attribute__((packed)); 56 57 #define BOOTP_HDR_SIZE sizeof(struct bootp_hdr) 58 59 /**********************************************************************/ 60 /* 61 * Global functions and variables. 62 */ 63 64 /* bootp.c */ 65 extern u32 bootp_id; /* ID of cur BOOTP request */ 66 extern int bootp_try; 67 68 /* Send a BOOTP request */ 69 void bootp_reset(void); 70 void bootp_request(void); 71 72 /****************** DHCP Support *********************/ 73 void dhcp_request(void); 74 75 /* DHCP States */ 76 typedef enum { INIT, 77 INIT_REBOOT, 78 REBOOTING, 79 SELECTING, 80 REQUESTING, 81 REBINDING, 82 BOUND, 83 RENEWING } dhcp_state_t; 84 85 #define DHCP_DISCOVER 1 86 #define DHCP_OFFER 2 87 #define DHCP_REQUEST 3 88 #define DHCP_DECLINE 4 89 #define DHCP_ACK 5 90 #define DHCP_NAK 6 91 #define DHCP_RELEASE 7 92 93 #define DHCP_OPTION_PXE_CONFIG_FILE 209 /* "ConfigFile" option according to rfc5071 */ 94 95 /**********************************************************************/ 96 97 #endif /* __BOOTP_H__ */ 98