646cf5017b
identifier to the DHCP server. Now you can check for this string in your dhcp configuration to decide whether you will hand out a lease to the client or not.
523 lines
15 KiB
C
523 lines
15 KiB
C
/*
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* Copyright (c) 2000 Alfred Perlstein <alfred@freebsd.org>
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* All rights reserved.
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* Copyright (c) 2000 Paul Saab <ps@freebsd.org>
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* All rights reserved.
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* Copyright (c) 2000 John Baldwin <jhb@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* The typedefs and structures declared in this file
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* clearly violate style(9), the reason for this is to conform to the
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* typedefs/structure-names used in the Intel literature to avoid confusion.
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*
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* It's for your own good. :)
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*/
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/* It seems that intel didn't think about ABI,
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* either that or 16bit ABI != 32bit ABI (which seems reasonable)
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* I have to thank Intel for the hair loss I incurred trying to figure
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* out why PXE was mis-reading structures I was passing it (at least
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* from my point of view)
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*
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* Solution: use gcc's '__attribute__ ((packed))' to correctly align
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* structures passed into PXE
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* Question: does this really work for PXE's expected ABI?
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*/
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#define PACKED __attribute__ ((packed))
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#define S_SIZE(s) s, sizeof(s) - 1
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#define IP_STR "%d.%d.%d.%d"
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#define IP_ARGS(ip) \
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(int)(ip >> 24) & 0xff, (int)(ip >> 16) & 0xff, \
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(int)(ip >> 8) & 0xff, (int)ip & 0xff
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#define MAC_STR "%02x:%02x:%02x:%02x:%02x:%02x"
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#define MAC_ARGS(mac) \
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mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]
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#define PXENFSROOTPATH "/pxeroot"
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typedef struct {
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uint16_t offset;
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uint16_t segment;
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} SEGOFF16_t;
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typedef struct {
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uint16_t Seg_Addr;
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uint32_t Phy_Addr;
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uint16_t Seg_Size;
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} SEGDESC_t;
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typedef uint16_t SEGSEL_t;
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typedef uint16_t PXENV_STATUS_t;
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typedef uint32_t IP4_t;
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typedef uint32_t ADDR32_t;
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typedef uint16_t UDP_PORT_t;
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#define MAC_ADDR_LEN 16
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typedef uint8_t MAC_ADDR[MAC_ADDR_LEN];
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/* PXENV+ */
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typedef struct {
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uint8_t Signature[6]; /* 'PXENV+' */
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uint16_t Version; /* MSB = major, LSB = minor */
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uint8_t Length; /* structure length */
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uint8_t Checksum; /* checksum pad */
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SEGOFF16_t RMEntry; /* SEG:OFF to PXE entry point */
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/* don't use PMOffset and PMSelector (from the 2.1 PXE manual) */
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uint32_t PMOffset; /* Protected mode entry */
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SEGSEL_t PMSelector; /* Protected mode selector */
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SEGSEL_t StackSeg; /* Stack segment address */
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uint16_t StackSize; /* Stack segment size (bytes) */
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SEGSEL_t BC_CodeSeg; /* BC Code segment address */
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uint16_t BC_CodeSize; /* BC Code segment size (bytes) */
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SEGSEL_t BC_DataSeg; /* BC Data segment address */
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uint16_t BC_DataSize; /* BC Data segment size (bytes) */
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SEGSEL_t UNDIDataSeg; /* UNDI Data segment address */
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uint16_t UNDIDataSize; /* UNDI Data segment size (bytes) */
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SEGSEL_t UNDICodeSeg; /* UNDI Code segment address */
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uint16_t UNDICodeSize; /* UNDI Code segment size (bytes) */
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SEGOFF16_t PXEPtr; /* SEG:OFF to !PXE struct,
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only present when Version > 2.1 */
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} PACKED pxenv_t;
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/* !PXE */
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typedef struct {
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uint8_t Signature[4];
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uint8_t StructLength;
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uint8_t StructCksum;
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uint8_t StructRev;
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uint8_t reserved_1;
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SEGOFF16_t UNDIROMID;
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SEGOFF16_t BaseROMID;
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SEGOFF16_t EntryPointSP;
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SEGOFF16_t EntryPointESP;
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SEGOFF16_t StatusCallout;
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uint8_t reserved_2;
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uint8_t SegDescCn;
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SEGSEL_t FirstSelector;
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SEGDESC_t Stack;
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SEGDESC_t UNDIData;
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SEGDESC_t UNDICode;
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SEGDESC_t UNDICodeWrite;
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SEGDESC_t BC_Data;
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SEGDESC_t BC_Code;
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SEGDESC_t BC_CodeWrite;
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} PACKED pxe_t;
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#define PXENV_START_UNDI 0x0000
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typedef struct {
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PXENV_STATUS_t Status;
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uint16_t ax;
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uint16_t bx;
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uint16_t dx;
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uint16_t di;
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uint16_t es;
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} PACKED t_PXENV_START_UNDI;
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#define PXENV_UNDI_STARTUP 0x0001
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_UNDI_STARTUP;
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#define PXENV_UNDI_CLEANUP 0x0002
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_UNDI_CLEANUP;
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#define PXENV_UNDI_INITIALIZE 0x0003
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typedef struct {
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PXENV_STATUS_t Status;
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ADDR32_t ProtocolIni; /* Phys addr of a copy of the driver module */
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uint8_t reserved[8];
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} PACKED t_PXENV_UNDI_INITALIZE;
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#define MAXNUM_MCADDR 8
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typedef struct {
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PXENV_STATUS_t Status;
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uint16_t MCastAddrCount;
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MAC_ADDR McastAddr[MAXNUM_MCADDR];
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} PACKED t_PXENV_UNDI_MCAST_ADDRESS;
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#define PXENV_UNDI_RESET_ADAPTER 0x0004
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typedef struct {
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PXENV_STATUS_t Status;
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t_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
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} PACKED t_PXENV_UNDI_RESET;
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#define PXENV_UNDI_SHUTDOWN 0x0005
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_UNDI_SHUTDOWN;
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#define PXENV_UNDI_OPEN 0x0006
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typedef struct {
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PXENV_STATUS_t Status;
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uint16_t OpenFlag;
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uint16_t PktFilter;
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# define FLTR_DIRECTED 0x0001
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# define FLTR_BRDCST 0x0002
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# define FLTR_PRMSCS 0x0003
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# define FLTR_SRC_RTG 0x0004
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t_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
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} PACKED t_PXENV_UNDI_OPEN;
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#define PXENV_UNDI_CLOSE 0x0007
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_UNDI_CLOSE;
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#define PXENV_UNDI_TRANSMIT 0x0008
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typedef struct {
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PXENV_STATUS_t Status;
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uint8_t Protocol;
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# define P_UNKNOWN 0
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# define P_IP 1
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# define P_ARP 2
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# define P_RARP 3
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uint8_t XmitFlag;
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# define XMT_DESTADDR 0x0000
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# define XMT_BROADCAST 0x0001
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SEGOFF16_t DestAddr;
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SEGOFF16_t TBD;
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uint32_t Reserved[2];
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} PACKED t_PXENV_UNDI_TRANSMIT;
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#define MAX_DATA_BLKS 8
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typedef struct {
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uint16_t ImmedLength;
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SEGOFF16_t Xmit;
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uint16_t DataBlkCount;
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struct DataBlk {
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uint8_t TDPtrType;
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uint8_t TDRsvdByte;
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uint16_t TDDataLen;
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SEGOFF16_t TDDataPtr;
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} DataBlock[MAX_DATA_BLKS];
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} PACKED t_PXENV_UNDI_TBD;
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#define PXENV_UNDI_SET_MCAST_ADDRESS 0x0009
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typedef struct {
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PXENV_STATUS_t Status;
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t_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
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} PACKED t_PXENV_UNDI_SET_MCAST_ADDR;
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#define PXENV_UNDI_SET_STATION_ADDRESS 0x000A
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typedef struct {
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PXENV_STATUS_t Status;
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MAC_ADDR StationAddress; /* Temp MAC addres to use */
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} PACKED t_PXENV_UNDI_SET_STATION_ADDR;
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#define PXENV_UNDI_SET_PACKET_FILTER 0x000B
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typedef struct {
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PXENV_STATUS_t Status;
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uint8_t filter; /* see UNDI_OPEN (0x0006) */
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} PACKED t_PXENV_UNDI_SET_PACKET_FILTER;
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#define PXENV_UNDI_GET_INFORMATION 0x000C
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typedef struct {
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PXENV_STATUS_t Status;
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uint16_t BaseIo; /* Adapter base I/O address */
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uint16_t IntNumber; /* Adapter IRQ number */
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uint16_t MaxTranUnit; /* Adapter maximum transmit unit */
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uint16_t HwType; /* Type of protocol at the hardware addr */
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# define ETHER_TYPE 1
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# define EXP_ETHER_TYPE 2
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# define IEEE_TYPE 6
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# define ARCNET_TYPE 7
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uint16_t HwAddrLen; /* Length of hardware address */
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MAC_ADDR CurrentNodeAddress; /* Current hardware address */
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MAC_ADDR PermNodeAddress; /* Permanent hardware address */
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SEGSEL_t ROMAddress; /* Real mode ROM segment address */
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uint16_t RxBufCt; /* Receive queue length */
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uint16_t TxBufCt; /* Transmit queue length */
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} PACKED t_PXENV_UNDI_GET_INFORMATION;
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#define PXENV_UNDI_GET_STATISTICS 0x000D
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typedef struct {
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PXENV_STATUS_t Status;
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uint32_t XmitGoodFrames; /* Number of successful transmissions */
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uint32_t RcvGoodFrames; /* Number of good frames received */
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uint32_t RcvCRCErrors; /* Number of frames with CRC errors */
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uint32_t RcvResourceErrors; /* Number of frames dropped */
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} PACKED t_PXENV_UNDI_GET_STATISTICS;
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#define PXENV_UNDI_CLEAR_STATISTICS 0x000E
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_UNDI_CLEAR_STATISTICS;
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#define PXENV_UNDI_INITIATE_DIAGS 0x000F
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_UNDI_INITIATE_DIAGS;
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#define PXENV_UNDI_FORCE_INTERRUPT 0x0010
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_UNDI_FORCE_INTERRUPT;
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#define PXENV_UNDI_GET_MCAST_ADDRESS 0x0011
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typedef struct {
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PXENV_STATUS_t Status;
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IP4_t InetAddr; /* IP mulicast address */
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MAC_ADDR MediaAddr; /* MAC multicast address */
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} PACKED t_PXENV_UNDI_GET_MCAST_ADDR;
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#define PXENV_UNDI_GET_NIC_TYPE 0x0012
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typedef struct {
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PXENV_STATUS_t Status;
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uint8_t NicType; /* Type of NIC */
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# define PCI_NIC 2
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# define PnP_NIC 3
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# define CardBus_NIC 4
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union {
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struct {
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uint16_t Vendor_ID;
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uint16_t Dev_ID;
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uint8_t Base_Class;
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uint8_t Sub_Class;
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uint8_t Prog_Intf;
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uint8_t Rev;
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uint16_t BusDevFunc;
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uint16_t SubVendor_ID;
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uint16_t SubDevice_ID;
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} pci, cardbus;
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struct {
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uint32_t EISA_Dev_ID;
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uint8_t Base_Class;
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uint8_t Sub_Class;
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uint8_t Prog_Intf;
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uint16_t CardSelNum;
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} pnp;
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} info;
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} PACKED t_PXENV_UNDI_GET_NIC_TYPE;
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#define PXENV_UNDI_GET_IFACE_INFO 0x0013
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typedef struct {
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PXENV_STATUS_t Status;
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uint8_t IfaceType[16]; /* Name of MAC type in ASCII. */
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uint32_t LinkSpeed; /* Defined in NDIS 2.0 spec */
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uint32_t ServiceFlags; /* Defined in NDIS 2.0 spec */
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uint32_t Reserved[4]; /* must be 0 */
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} PACKED t_PXENV_UNDI_GET_NDIS_INFO;
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#define PXENV_UNDI_ISR 0x0014
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typedef struct {
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PXENV_STATUS_t Status;
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uint16_t FuncFlag; /* PXENV_UNDI_ISR_OUT_xxx */
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uint16_t BufferLength; /* Length of Frame */
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uint16_t FrameLength; /* Total length of reciever frame */
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uint16_t FrameHeaderLength; /* Length of the media header in Frame */
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SEGOFF16_t Frame; /* receive buffer */
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uint8_t ProtType; /* Protocol type */
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uint8_t PktType; /* Packet Type */
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# define PXENV_UNDI_ISR_IN_START 1
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# define PXENV_UNDI_ISR_IN_PROCESS 2
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# define PXENV_UNDI_ISR_IN_GET_NEXT 3
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/* one of these will be returned for PXENV_UNDI_ISR_IN_START */
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# define PXENV_UNDI_ISR_OUT_OURS 0
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# define PXENV_UNDI_ISR_OUT_NOT_OUTS 1
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/*
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* one of these will bre returnd for PXEND_UNDI_ISR_IN_PROCESS
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* and PXENV_UNDI_ISR_IN_GET_NEXT
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*/
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# define PXENV_UNDI_ISR_OUT_DONE 0
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# define PXENV_UNDI_ISR_OUT_TRANSMIT 2
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# define PXENV_UNDI_ISR_OUT_RECIEVE 3
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# define PXENV_UNDI_ISR_OUT_BUSY 4
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} PACKED t_PXENV_UNDI_ISR;
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#define PXENV_STOP_UNDI 0x0015
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_STOP_UNDI;
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#define PXENV_TFTP_OPEN 0x0020
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typedef struct {
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PXENV_STATUS_t Status;
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IP4_t ServerIPAddress;
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IP4_t GatewayIPAddress;
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uint8_t FileName[128];
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UDP_PORT_t TFTPPort;
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uint16_t PacketSize;
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} PACKED t_PXENV_TFTP_OPEN;
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#define PXENV_TFTP_CLOSE 0x0021
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typedef struct {
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PXENV_STATUS_t Status;
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} PACKED t_PXENV_TFTP_CLOSE;
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#define PXENV_TFTP_READ 0x0022
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typedef struct {
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PXENV_STATUS_t Status;
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uint16_t PacketNumber;
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uint16_t BufferSize;
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SEGOFF16_t Buffer;
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} PACKED t_PXENV_TFTP_READ;
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#define PXENV_TFTP_READ_FILE 0x0023
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typedef struct {
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PXENV_STATUS_t Status;
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uint8_t FileName[128];
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uint32_t BufferSize;
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ADDR32_t Buffer;
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IP4_t ServerIPAddress;
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IP4_t GatewayIPAdress;
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IP4_t McastIPAdress;
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UDP_PORT_t TFTPClntPort;
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UDP_PORT_t TFTPSrvPort;
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uint16_t TFTPOpenTimeOut;
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uint16_t TFTPReopenDelay;
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} PACKED t_PXENV_TFTP_READ_FILE;
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#define PXENV_TFTP_GET_FSIZE 0x0025
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typedef struct {
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PXENV_STATUS_t Status;
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IP4_t ServerIPAddress;
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IP4_t GatewayIPAdress;
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uint8_t FileName[128];
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uint32_t FileSize;
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} PACKED t_PXENV_TFTP_GET_FSIZE;
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#define PXENV_UDP_OPEN 0x0030
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typedef struct {
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PXENV_STATUS_t status;
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IP4_t src_ip; /* IP address of this station */
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} PACKED t_PXENV_UDP_OPEN;
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#define PXENV_UDP_CLOSE 0x0031
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typedef struct {
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PXENV_STATUS_t status;
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} PACKED t_PXENV_UDP_CLOSE;
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#define PXENV_UDP_READ 0x0032
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typedef struct {
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PXENV_STATUS_t status;
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IP4_t src_ip; /* IP of sender */
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IP4_t dest_ip; /* Only accept packets sent to this IP */
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UDP_PORT_t s_port; /* UDP source port of sender */
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UDP_PORT_t d_port; /* Only accept packets sent to this port */
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uint16_t buffer_size; /* Size of the packet buffer */
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SEGOFF16_t buffer; /* SEG:OFF to the packet buffer */
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} PACKED t_PXENV_UDP_READ;
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#define PXENV_UDP_WRITE 0x0033
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typedef struct {
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PXENV_STATUS_t status;
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IP4_t ip; /* dest ip addr */
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IP4_t gw; /* ip gateway */
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UDP_PORT_t src_port; /* source udp port */
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UDP_PORT_t dst_port; /* destination udp port */
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uint16_t buffer_size; /* Size of the packet buffer */
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SEGOFF16_t buffer; /* SEG:OFF to the packet buffer */
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} PACKED t_PXENV_UDP_WRITE;
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#define PXENV_UNLOAD_STACK 0x0070
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typedef struct {
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PXENV_STATUS_t Status;
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uint8_t reserved[10];
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} PACKED t_PXENV_UNLOAD_STACK;
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#define PXENV_GET_CACHED_INFO 0x0071
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typedef struct {
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PXENV_STATUS_t Status;
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uint16_t PacketType; /* type (defined right here) */
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# define PXENV_PACKET_TYPE_DHCP_DISCOVER 1
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# define PXENV_PACKET_TYPE_DHCP_ACK 2
|
|
# define PXENV_PACKET_TYPE_BINL_REPLY 3
|
|
uint16_t BufferSize; /* max to copy, leave at 0 for pointer */
|
|
SEGOFF16_t Buffer; /* copy to, leave at 0 for pointer */
|
|
uint16_t BufferLimit; /* max size of buffer in BC dataseg ? */
|
|
} PACKED t_PXENV_GET_CACHED_INFO;
|
|
|
|
|
|
/* structure filled in by PXENV_GET_CACHED_INFO
|
|
* (how we determine which IP we downloaded the initial bootstrap from)
|
|
* words can't describe...
|
|
*/
|
|
typedef struct {
|
|
uint8_t opcode;
|
|
# define BOOTP_REQ 1
|
|
# define BOOTP_REP 2
|
|
uint8_t Hardware; /* hardware type */
|
|
uint8_t Hardlen; /* hardware addr len */
|
|
uint8_t Gatehops; /* zero it */
|
|
uint32_t ident; /* random number chosen by client */
|
|
uint16_t seconds; /* seconds since did initial bootstrap */
|
|
uint16_t Flags; /* seconds since did initial bootstrap */
|
|
# define BOOTP_BCAST 0x8000 /* ? */
|
|
IP4_t cip; /* Client IP */
|
|
IP4_t yip; /* Your IP */
|
|
IP4_t sip; /* IP to use for next boot stage */
|
|
IP4_t gip; /* Relay IP ? */
|
|
MAC_ADDR CAddr; /* Client hardware address */
|
|
uint8_t Sname[64]; /* Server's hostname (Optional) */
|
|
uint8_t bootfile[128]; /* boot filename */
|
|
union {
|
|
# if 1
|
|
# define BOOTP_DHCPVEND 1024 /* DHCP extended vendor field size */
|
|
# else
|
|
# define BOOTP_DHCPVEND 312 /* DHCP standard vendor field size */
|
|
# endif
|
|
uint8_t d[BOOTP_DHCPVEND]; /* raw array of vendor/dhcp options */
|
|
struct {
|
|
uint8_t magic[4]; /* DHCP magic cookie */
|
|
# ifndef VM_RFC1048
|
|
# define VM_RFC1048 0x63825363L /* ? */
|
|
# endif
|
|
uint32_t flags; /* bootp flags/opcodes */
|
|
uint8_t pad[56]; /* I don't think intel knows what a
|
|
union does... */
|
|
} v;
|
|
} vendor;
|
|
} PACKED BOOTPLAYER;
|
|
|
|
#define PXENV_RESTART_TFTP 0x0073
|
|
#define t_PXENV_RESTART_TFTP t_PXENV_TFTP_READ_FILE
|
|
|
|
#define PXENV_START_BASE 0x0075
|
|
typedef struct {
|
|
PXENV_STATUS_t Status;
|
|
} PACKED t_PXENV_START_BASE;
|
|
|
|
#define PXENV_STOP_BASE 0x0076
|
|
typedef struct {
|
|
PXENV_STATUS_t Status;
|
|
} PACKED t_PXENV_STOP_BASE;
|