diff options
Diffstat (limited to 'contrib/syslinux-4.02/core/fs/pxe/pxe.h')
| -rw-r--r-- | contrib/syslinux-4.02/core/fs/pxe/pxe.h | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/core/fs/pxe/pxe.h b/contrib/syslinux-4.02/core/fs/pxe/pxe.h new file mode 100644 index 0000000..1e6fa76 --- /dev/null +++ b/contrib/syslinux-4.02/core/fs/pxe/pxe.h @@ -0,0 +1,252 @@ +/* ----------------------------------------------------------------------- + * + * Copyright 1999-2008 H. Peter Anvin - All Rights Reserved + * Copyright 2009-2010 Intel Corporation; author: H. Peter Anvin + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, Inc., 53 Temple Place Ste 330, + * Boston MA 02111-1307, USA; either version 2 of the License, or + * (at your option) any later version; incorporated herein by reference. + * + * ----------------------------------------------------------------------- */ + +/* + * pxe.h + * + * PXE opcodes + * + */ +#ifndef PXE_H +#define PXE_H + +#include <syslinux/pxe_api.h> +#include "fs.h" /* For MAX_OPEN, should go away */ + +/* + * Some basic defines... + */ +#define TFTP_PORT htons(69) /* Default TFTP port */ +#define TFTP_BLOCKSIZE_LG2 9 +#define TFTP_BLOCKSIZE (1 << TFTP_BLOCKSIZE_LG2) +#define PKTBUF_SIZE 2048 /* */ + +#define is_digit(c) (((c) >= '0') && ((c) <= '9')) + +static inline bool is_hex(char c) +{ + return (c >= '0' && c <= '9') || + (c >= 'A' && c <= 'F') || + (c >= 'a' && c <= 'f'); +} + +static inline int hexval(char c) +{ + return (c >= 'A') ? (c & ~0x20) - 'A' + 10 : (c - '0'); +} + +/* + * TFTP operation codes + */ +#define TFTP_RRQ htons(1) // Read rest +#define TFTP_WRQ htons(2) // Write rest +#define TFTP_DATA htons(3) // Data packet +#define TFTP_ACK htons(4) // ACK packet +#define TFTP_ERROR htons(5) // ERROR packet +#define TFTP_OACK htons(6) // OACK packet + +/* + * TFTP error codes + */ +#define TFTP_EUNDEF htons(0) // Unspecified error +#define TFTP_ENOTFOUND htons(1) // File not found +#define TFTP_EACCESS htons(2) // Access violation +#define TFTP_ENOSPACE htons(3) // Disk full +#define TFTP_EBADOP htons(4) // Invalid TFTP operation +#define TFTP_EBADID htons(5) // Unknown transfer +#define TFTP_EEXISTS htons(6) // File exists +#define TFTP_ENOUSER htons(7) // No such user +#define TFTP_EOPTNEG htons(8) // Option negotiation failure + + +#define BOOTP_OPTION_MAGIC htonl(0x63825363) +#define MAC_MAX 32 + +/* Defines for DNS */ +#define DNS_PORT htons(53) /* Default DNS port */ +#define DNS_MAX_PACKET 512 /* Defined by protocol */ +#define DNS_MAX_SERVERS 4 /* Max no of DNS servers */ + + +/* + * structures + */ + +struct pxenv_t { + uint8_t signature[6]; /* PXENV+ */ + uint16_t version; + uint8_t length; + uint8_t checksum; + segoff16_t rmentry; + uint32_t pmoffset; + uint16_t pmselector; + uint16_t stackseg; + uint16_t stacksize; + uint16_t bc_codeseg; + uint16_t bc_codesize; + uint16_t bc_dataseg; + uint16_t bc_datasize; + uint16_t undidataseg; + uint16_t undidatasize; + uint16_t undicodeseg; + uint16_t undicodesize; + segoff16_t pxeptr; +} __packed; + +struct pxe_t { + uint8_t signature[4]; /* !PXE */ + uint8_t structlength; + uint8_t structcksum; + uint8_t structrev; + uint8_t _pad1; + segoff16_t undiromid; + segoff16_t baseromid; + segoff16_t entrypointsp; + segoff16_t entrypointesp; + segoff16_t statuscallout; + uint8_t _pad2; + uint8_t segdesccnt; + uint16_t firstselector; + pxe_segdesc_t seg[7]; +} __packed; + +enum pxe_segments { + PXE_Seg_Stack = 0, + PXE_Seg_UNDIData = 1, + PXE_Seg_UNDICode = 2, + PXE_Seg_UNDICodeWrite = 3, + PXE_Seg_BC_Data = 4, + PXE_Seg_BC_Code = 5, + PXE_Seg_BC_CodeWrite = 6 +}; + +struct bootp_t { + uint8_t opcode; /* BOOTP/DHCP "opcode" */ + uint8_t hardware; /* ARP hreadware type */ + uint8_t hardlen; /* Hardware address length */ + uint8_t gatehops; /* Used by forwarders */ + uint32_t ident; /* Transaction ID */ + uint16_t seconds; /* Seconds elapsed */ + uint16_t flags; /* Broadcast flags */ + uint32_t cip; /* Cient IP */ + uint32_t yip; /* "Your" IP */ + uint32_t sip; /* Next Server IP */ + uint32_t gip; /* Relay agent IP */ + uint8_t macaddr[16]; /* Client MAC address */ + uint8_t sname[64]; /* Server name (optional) */ + char bootfile[128]; /* Boot file name */ + uint32_t option_magic; /* Vendor option magic cookie */ + uint8_t options[1260]; /* Vendor options */ +} __attribute__ ((packed)); + +/* + * Our inode private information -- this includes the packet buffer! + */ +struct pxe_pvt_inode { + uint16_t tftp_localport; /* Local port number (0=not in us)*/ + uint16_t tftp_remoteport; /* Remote port number */ + uint32_t tftp_remoteip; /* Remote IP address */ + uint32_t tftp_filepos; /* bytes downloaded (includeing buffer) */ + uint32_t tftp_blksize; /* Block size for this connection(*) */ + uint16_t tftp_bytesleft; /* Unclaimed data bytes */ + uint16_t tftp_lastpkt; /* Sequence number of last packet (NBO) */ + char *tftp_dataptr; /* Pointer to available data */ + uint8_t tftp_goteof; /* 1 if the EOF packet received */ + uint8_t tftp_unused[3]; /* Currently unused */ + char tftp_pktbuf[PKTBUF_SIZE]; +} __attribute__ ((packed)); + +#define PVT(i) ((struct pxe_pvt_inode *)((i)->pvt)) + +/* + * Network boot information + */ +struct ip_info { + uint32_t ipv4; + uint32_t myip; + uint32_t serverip; + uint32_t gateway; + uint32_t netmask; +}; + +/* + * Variable externs + */ +extern struct ip_info IPInfo; + +extern uint8_t MAC[]; +extern char BOOTIFStr[]; +extern uint8_t MAC_len; +extern uint8_t MAC_type; + +extern uint8_t DHCPMagic; +extern uint32_t RebootTime; + +extern char boot_file[]; +extern char path_prefix[]; +extern char LocalDomain[]; + +extern char IPOption[]; +extern char dot_quad_buf[]; + +extern uint32_t dns_server[]; + +extern uint16_t APIVer; +extern far_ptr_t PXEEntry; +extern uint8_t KeepPXE; + +extern far_ptr_t InitStack; + +extern bool have_uuid; +extern uint8_t uuid_type; +extern uint8_t uuid[]; + +extern uint16_t BIOS_fbm; +extern const uint8_t TimeoutTable[]; + +/* + * Compute the suitable gateway for a specific route -- too many + * vendor PXE stacks don't do this correctly... + */ +static inline uint32_t gateway(uint32_t ip) +{ + if ((ip ^ IPInfo.myip) & IPInfo.netmask) + return IPInfo.gateway; + else + return 0; +} + +/* + * functions + */ + +/* pxe.c */ +bool ip_ok(uint32_t); +int pxe_call(int, void *); + +/* dhcp_options.c */ +void parse_dhcp(int); + +/* dnsresolv.c */ +int dns_mangle(char **, const char *); +uint32_t dns_resolv(const char *); + +/* idle.c */ +void pxe_idle_init(void); +void pxe_idle_cleanup(void); + +/* socknum.c */ +uint16_t get_port(void); +void free_port(uint16_t port); + +#endif /* pxe.h */ |