559 lines
17 KiB
C
559 lines
17 KiB
C
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#ifndef _PACKET_H_
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#define _PACKET_H_
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#ifndef _PPPOE_VERSION
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#define _PPPOE_VERSION 1
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#endif
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typedef struct _ADAPTER* PADAPTER;
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typedef struct _BINDING* PBINDING;
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//
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// Network-to-Host and vice versa conversion macros
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//
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#if (defined(_M_IX86) && (_MSC_FULL_VER > 13009037)) || ((defined(_M_AMD64) || defined(_M_IA64)) && (_MSC_FULL_VER > 13009175))
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#define htons(x) _byteswap_ushort((USHORT)(x))
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#define htonl(x) _byteswap_ulong((ULONG)(x))
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#else
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#define htons( a ) ((((a) & 0xFF00) >> 8) |\
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(((a) & 0x00FF) << 8))
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#define htonl( a ) ((((a) & 0xFF000000) >> 24) | \
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(((a) & 0x00FF0000) >> 8) | \
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(((a) & 0x0000FF00) << 8) | \
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(((a) & 0x000000FF) << 24))
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#endif
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#define ntohs( a ) htons(a)
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#define ntohl( a ) htonl(a)
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//
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// Constants related to packet lengths
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//
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#define PPPOE_PACKET_BUFFER_SIZE 1514
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#define ETHERNET_HEADER_LENGTH 14
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#define PPPOE_PACKET_HEADER_LENGTH 20 // Per RFC2156
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#define PPPOE_TAG_HEADER_LENGTH 4 // Per RFC2156
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#define PPP_MAX_HEADER_LENGTH 14 // maximum possible header length for ppp
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#define PPPOE_AC_COOKIE_TAG_LENGTH 6
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//
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// Offsets for the header members
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//
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#define PPPOE_PACKET_DEST_ADDR_OFFSET 0 // Per RFC2156
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#define PPPOE_PACKET_SRC_ADDR_OFFSET 6 // Per RFC2156
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#define PPPOE_PACKET_ETHER_TYPE_OFFSET 12 // Per RFC2156
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#define PPPOE_PACKET_VERSION_OFFSET 14 // Per RFC2156
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#define PPPOE_PACKET_TYPE_OFFSET 14 // Per RFC2156
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#define PPPOE_PACKET_CODE_OFFSET 15 // Per RFC2156
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#define PPPOE_PACKET_SESSION_ID_OFFSET 16 // Per RFC2156
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#define PPPOE_PACKET_LENGTH_OFFSET 18 // Per RFC2156
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//
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// Macros to set information in the header of the packet
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//
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#define PacketSetDestAddr( pP, addr ) \
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NdisMoveMemory( ( pP->pHeader + PPPOE_PACKET_DEST_ADDR_OFFSET ), addr, 6 )
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#define PacketSetSrcAddr( pP, addr ) \
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NdisMoveMemory( ( pP->pHeader + PPPOE_PACKET_SRC_ADDR_OFFSET ), addr, 6 )
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#define PacketSetEtherType( pP, type ) \
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* ( USHORT UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_ETHER_TYPE_OFFSET ) = htons( (USHORT) type )
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#define PacketSetVersion( pP, ver ) \
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* ( UCHAR UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_VERSION_OFFSET ) |= ( ( ( (UCHAR) ver ) << 4 ) & PACKET_VERSION_MASK )
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#define PacketSetType( pP, type ) \
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* ( UCHAR UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_TYPE_OFFSET ) |= ( ( (UCHAR) type ) & PACKET_TYPE_MASK )
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#define PacketSetCode( pP, code ) \
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* ( UCHAR UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_CODE_OFFSET ) = ( (UCHAR) code )
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#define PacketSetSessionId( pP, ses_id ) \
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* ( USHORT UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_SESSION_ID_OFFSET ) = htons( (USHORT) ses_id )
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#define PacketSetLength( pP, len) \
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* ( USHORT UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_LENGTH_OFFSET ) = htons( (USHORT) len )
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#define PacketSetSendCompletionStatus( pP, s ) \
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( pP->SendCompletionStatus = s )
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//
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// Macros to get information from the header of the packet
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//
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#define PacketGetDestAddr( pP ) \
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( pP->pHeader + PPPOE_PACKET_DEST_ADDR_OFFSET )
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#define PacketGetSrcAddr( pP ) \
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( pP->pHeader + PPPOE_PACKET_SRC_ADDR_OFFSET )
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#define PacketGetEtherType( pP ) \
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ntohs( * ( USHORT UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_ETHER_TYPE_OFFSET ) )
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#define PacketGetVersion( pP ) \
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( ( ( * ( UCHAR UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_VERSION_OFFSET ) ) & PACKET_VERSION_MASK ) >> 4 )
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#define PacketGetType( pP ) \
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( ( * ( UCHAR UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_TYPE_OFFSET ) ) & PACKET_TYPE_MASK )
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#define PacketGetCode( pP ) \
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( * ( UCHAR UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_CODE_OFFSET ) )
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#define PacketGetSessionId( pP ) \
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ntohs( * ( USHORT UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_SESSION_ID_OFFSET ) )
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#define PacketGetLength( pP ) \
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ntohs( * ( USHORT UNALIGNED * ) ( pP->pHeader + PPPOE_PACKET_LENGTH_OFFSET ) )
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#define PacketGetSendCompletionStatus( pP ) \
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( pP->SendCompletionStatus )
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//
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// Macro that returns the Ndis Packet for a PPPoE packet
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//
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#define PacketGetNdisPacket( pP ) \
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( pP->pNdisPacket )
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//
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// This structure is just a map, and it is not actually used in the code
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//
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typedef struct
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_PPPOE_HEADER
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{
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CHAR DestAddr[6];
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CHAR SrcAddr[6];
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#define PACKET_BROADCAST_ADDRESS EthernetBroadcastAddress
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USHORT usEtherType;
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#define PACKET_ETHERTYPE_DISCOVERY 0x8863
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#define PACKET_ETHERTYPE_PAYLOAD 0x8864
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union
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{
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//
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// Version field is 4 bits and MUST be set to 0x1 for this version
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//
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CHAR usVersion;
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#define PACKET_VERSION_MASK 0xf0
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#define PACKET_VERSION (USHORT)0x1
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//
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// Type field is 4 bits and MUST be set to 0x1 for this version
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//
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CHAR usType;
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#define PACKET_TYPE_MASK 0x0f
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#define PACKET_TYPE (USHORT)0x1
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} uVerType;
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//
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// Code field is 8 bits and is defined as follows for Version 1
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// Values selected from enumerated type PACKET_CODES (see below)
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//
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CHAR usCode;
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//
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// Session Id field is 16 bits and define a unique session combined with
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// the source and destination addresses
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//
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USHORT usSessionId;
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#define PACKET_NULL_SESSION 0x0000
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//
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// Length field is 16 bits and indicates the length of the payload field only.
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// The length field excludes the PPPoE header block.
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//
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USHORT usLength;
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//
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// Subtract Header size from Max PADI and MAX payload lengths per RFC2156
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//
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#define PACKET_PADI_MAX_LENGTH 1478 // (1514 - 20 - 16)
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#define PACKET_GEN_MAX_LENGTH 1494 // (1514 - 20)
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#define PACKET_PPP_PAYLOAD_MAX_LENGTH 1480 // (1514 - 20)
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}
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PPPOE_HEADER;
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//
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// PACKET CODES defined by RFC2156
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//
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typedef enum
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_PACKET_CODES
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{
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PACKET_CODE_PADI = 0x09,
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PACKET_CODE_PADO = 0x07,
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PACKET_CODE_PADR = 0x19,
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PACKET_CODE_PADS = 0x65,
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PACKET_CODE_PADT = 0xa7,
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PACKET_CODE_PAYLOAD = 0x00
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}
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PACKET_CODES;
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//
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// TAGS defined by RFC2156
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//
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typedef enum
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_PACKET_TAGS
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{
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tagEndOfList = 0x0000,
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tagServiceName = 0x0101,
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tagACName = 0x0102,
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tagHostUnique = 0x0103,
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tagACCookie = 0x0104,
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tagVendorSpecific = 0x0105,
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tagRelaySessionId = 0x0110,
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tagServiceNameError = 0x0201,
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tagACSystemError = 0x0202,
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tagGenericError = 0x0204
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}
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PACKET_TAGS;
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//
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// This is the packet context.
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//
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// CAUTION: Packets are not protected by their own locks, however they must be accessed carefully
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// by using their owner's locks.
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//
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typedef struct
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_PPPOE_PACKET
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{
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//
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// Points to the previous and next packet contexts when in a doubly linked list
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//
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LIST_ENTRY linkPackets;
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//
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// Keeps references on the packet
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// References added and removed for the following operations:
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//
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// (a) A reference is added when a packet is created and removed when it is freed.
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//
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// (b) A reference must be added before sending the packet and must be removed when
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// send operation is completed.
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//
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LONG lRef;
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//
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// Quick look-up for tags.
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//
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// The value pointers mark the beginning of the tag value in the pPacket->pPayload section.
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// The length values show the lengths of the values (not including the tag header)
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//
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USHORT tagServiceNameLength;
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CHAR* tagServiceNameValue;
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USHORT tagACNameLength;
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CHAR* tagACNameValue;
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USHORT tagHostUniqueLength;
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CHAR* tagHostUniqueValue;
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USHORT tagACCookieLength;
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CHAR* tagACCookieValue;
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USHORT tagRelaySessionIdLength;
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CHAR* tagRelaySessionIdValue;
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PACKET_TAGS tagErrorType;
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USHORT tagErrorTagLength;
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CHAR* tagErrorTagValue;
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//
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// Points to the buffer that holds the header portion of a PPPoE packet in wire format.
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// This points to the buffer portion of pNdisBuffer (see below)
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//
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CHAR* pHeader;
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//
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// Points to the payload portion of a PPPoE packet in wire format.
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// This is calculated and is set as : pPacket->pHeader + PPPOE_PACKET_HEADER_LENGTH
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//
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CHAR* pPayload;
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//
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// Bit flags that identifies the nature of the buffer and packet
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//
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// (a) PCBF_BufferAllocatedFromNdisBufferPool: Indicates that pNdisBuffer points to a buffer allocated
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// from gl_hNdisBufferpool, and it must be freed to that pool.
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//
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// (b) PCBF_BufferAllocatedFromOurBufferPool: Indicates that pNdisBuffer points to a buffer allocated
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// from gl_poolBuffers, and it must be freed to that pool.
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//
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// (c) PCBF_PacketAllocatedFromOurPacketPool: Indicates that pNdisPacket points to a packet allocated
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// from gl_poolPackets, and it must be freed to that pool.
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//
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// (d) PCBF_BufferChainedToPacket: Indicates that the buffer pointed to by pNdisBuffer is chained to
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// the packet pointed to by pNdisPacket, and must be unchained before
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// returning them back to their pools.
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//
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// (e) PCBF_CallNdisReturnPackets: Indicates that the packet was created using PacketCreateFromReceived()
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// and we should call NdisReturnPackets() when we are done with it to
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// return it back to NDIS.
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//
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//
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// (f) PCBF_ErrorTagReceived: This flag is valid only for received packets.
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// It indicates that when the packet was processed and a PPPoE packet was created
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// some error tags were noticed in the packet.
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//
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ULONG ulFlags;
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#define PCBF_BufferAllocatedFromNdisBufferPool 0x00000001
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#define PCBF_BufferAllocatedFromOurBufferPool 0x00000002
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#define PCBF_PacketAllocatedFromOurPacketPool 0x00000004
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#define PCBF_BufferChainedToPacket 0x00000008
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#define PCBF_CallNdisReturnPackets 0x00000010
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#define PCBF_CallNdisMWanSendComplete 0x00000020
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#define PCBF_ErrorTagReceived 0x00000040
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#define PCBF_PacketIndicatedIncomplete 0x00000080
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//
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// Pointer to the NdisBuffer
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//
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NDIS_BUFFER* pNdisBuffer;
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//
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// Points directly to the NDIS_PACKET
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//
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NDIS_PACKET* pNdisPacket;
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//
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// pPacket->pNdisPacket->ProtocolReserved[0 * sizeof(PVOID)] = (PVOID) pPPPoEPacket;
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// pPacket->pNdisPacket->ProtocolReserved[1 * sizeof(PVOID)] = (PVOID) pNdiswanPacket;
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// pPacket->pNdisPacket->ProtocolReserved[2 * sizeof(PVOID)] = (PVOID) miniportAdapter;
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//
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//
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// Points to the PACKETHEAD struct in ppool.h. It contains the pointer to NDIS_PACKET
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//
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PACKETHEAD* pPacketHead;
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//
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// This is needed to dereference the binding when PCBF_CallNdisReturnPackets flag is set.
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//
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PBINDING pBinding;
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//
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// Send completion status for the packet
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//
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NDIS_STATUS SendCompletionStatus;
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}
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PPPOE_PACKET;
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VOID PacketPoolInit();
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VOID PacketPoolUninit();
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VOID PacketPoolAlloc();
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VOID PacketPoolFree();
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PPPOE_PACKET* PacketAlloc();
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VOID PacketFree(
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IN PPPOE_PACKET* pPacket
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);
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VOID ReferencePacket(
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IN PPPOE_PACKET* pPacket
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);
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VOID DereferencePacket(
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IN PPPOE_PACKET* pPacket
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);
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|
|
PPPOE_PACKET*
|
||
|
|
PacketCreateSimple();
|
||
|
|
|
||
|
|
PPPOE_PACKET*
|
||
|
|
PacketCreateForReceived(
|
||
|
|
PBINDING pBinding,
|
||
|
|
PNDIS_PACKET pNdisPacket,
|
||
|
|
PNDIS_BUFFER pNdisBuffer,
|
||
|
|
PUCHAR pContents
|
||
|
|
);
|
||
|
|
|
||
|
|
PPPOE_PACKET*
|
||
|
|
PacketNdis2Pppoe(
|
||
|
|
IN PBINDING pBinding,
|
||
|
|
IN PNDIS_PACKET pNdisPacket,
|
||
|
|
OUT PINT pRefCount
|
||
|
|
);
|
||
|
|
|
||
|
|
BOOLEAN
|
||
|
|
PacketFastIsPPPoE(
|
||
|
|
IN CHAR* HeaderBuffer,
|
||
|
|
IN UINT HeaderBufferSize
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
RetrieveTag(
|
||
|
|
IN OUT PPPOE_PACKET* pPacket,
|
||
|
|
IN PACKET_TAGS tagType,
|
||
|
|
OUT USHORT* pTagLength,
|
||
|
|
OUT CHAR** pTagValue,
|
||
|
|
IN USHORT prevTagLength,
|
||
|
|
IN CHAR* prevTagValue,
|
||
|
|
IN BOOLEAN fSetTagInPacket
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_STATUS PacketInsertTag(
|
||
|
|
IN PPPOE_PACKET* pPacket,
|
||
|
|
IN PACKET_TAGS tagType,
|
||
|
|
IN USHORT tagLength,
|
||
|
|
IN CHAR* tagValue,
|
||
|
|
OUT CHAR** pNewTagValue
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_STATUS PacketInitializePADIToSend(
|
||
|
|
OUT PPPOE_PACKET** ppPacket,
|
||
|
|
IN USHORT tagServiceNameLength,
|
||
|
|
IN CHAR* tagServiceNameValue,
|
||
|
|
IN USHORT tagHostUniqueLength,
|
||
|
|
IN CHAR* tagHostUniqueValue
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_STATUS
|
||
|
|
PacketInitializePADOToSend(
|
||
|
|
IN PPPOE_PACKET* pPADI,
|
||
|
|
OUT PPPOE_PACKET** ppPacket,
|
||
|
|
IN CHAR* pSrcAddr,
|
||
|
|
IN USHORT tagServiceNameLength,
|
||
|
|
IN CHAR* tagServiceNameValue,
|
||
|
|
IN USHORT tagACNameLength,
|
||
|
|
IN CHAR* tagACNameValue,
|
||
|
|
IN BOOLEAN fInsertACCookieTag
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_STATUS PacketInitializePADRToSend(
|
||
|
|
IN PPPOE_PACKET* pPADO,
|
||
|
|
OUT PPPOE_PACKET** ppPacket,
|
||
|
|
IN USHORT tagServiceNameLength,
|
||
|
|
IN CHAR* tagServiceNameValue,
|
||
|
|
IN USHORT tagHostUniqueLength,
|
||
|
|
IN CHAR* tagHostUniqueValue
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_STATUS PacketInitializePADSToSend(
|
||
|
|
IN PPPOE_PACKET* pPADR,
|
||
|
|
OUT PPPOE_PACKET** ppPacket,
|
||
|
|
IN USHORT usSessionId
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_STATUS PacketInitializePADTToSend(
|
||
|
|
OUT PPPOE_PACKET** ppPacket,
|
||
|
|
IN CHAR* pSrcAddr,
|
||
|
|
IN CHAR* pDestAddr,
|
||
|
|
IN USHORT usSessionId
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_STATUS PacketInitializePAYLOADToSend(
|
||
|
|
OUT PPPOE_PACKET** ppPacket,
|
||
|
|
IN CHAR* pSrcAddr,
|
||
|
|
IN CHAR* pDestAddr,
|
||
|
|
IN USHORT usSessionId,
|
||
|
|
IN NDIS_WAN_PACKET* pWanPacket,
|
||
|
|
IN PADAPTER MiniportAdapter
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_STATUS PacketInitializeFromReceived(
|
||
|
|
IN PPPOE_PACKET* pPacket
|
||
|
|
);
|
||
|
|
|
||
|
|
BOOLEAN PacketAnyErrorTagsReceived(
|
||
|
|
IN PPPOE_PACKET* pPacket
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID PacketRetrievePayload(
|
||
|
|
IN PPPOE_PACKET* pPacket,
|
||
|
|
OUT CHAR** ppPayload,
|
||
|
|
OUT USHORT* pusLength
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID PacketRetrieveServiceNameTag(
|
||
|
|
IN PPPOE_PACKET* pPacket,
|
||
|
|
OUT USHORT* pTagLength,
|
||
|
|
OUT CHAR** pTagValue,
|
||
|
|
IN USHORT prevTagLength,
|
||
|
|
IN CHAR* prevTagValue
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID PacketRetrieveHostUniqueTag(
|
||
|
|
IN PPPOE_PACKET* pPacket,
|
||
|
|
OUT USHORT* pTagLength,
|
||
|
|
OUT CHAR** pTagValue
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID PacketRetrieveACNameTag(
|
||
|
|
IN PPPOE_PACKET* pPacket,
|
||
|
|
OUT USHORT* pTagLength,
|
||
|
|
OUT CHAR** pTagValue
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID PacketRetrieveACCookieTag(
|
||
|
|
IN PPPOE_PACKET* pPacket,
|
||
|
|
OUT USHORT* pTagLength,
|
||
|
|
OUT CHAR** pTagValue
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID PacketRetrieveErrorTag(
|
||
|
|
IN PPPOE_PACKET* pPacket,
|
||
|
|
OUT PACKET_TAGS* pTagType,
|
||
|
|
OUT USHORT* pTagLength,
|
||
|
|
OUT CHAR** pTagValue
|
||
|
|
);
|
||
|
|
|
||
|
|
PPPOE_PACKET* PacketGetRelatedPppoePacket(
|
||
|
|
IN NDIS_PACKET* pNdisPacket
|
||
|
|
);
|
||
|
|
|
||
|
|
NDIS_WAN_PACKET* PacketGetRelatedNdiswanPacket(
|
||
|
|
IN PPPOE_PACKET* pPacket
|
||
|
|
);
|
||
|
|
|
||
|
|
PADAPTER PacketGetMiniportAdapter(
|
||
|
|
IN PPPOE_PACKET* pPacket
|
||
|
|
);
|
||
|
|
|
||
|
|
PPPOE_PACKET* PacketMakeClone(
|
||
|
|
IN PPPOE_PACKET* pPacket
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
PacketGenerateACCookieTag(
|
||
|
|
IN PPPOE_PACKET* pPacket,
|
||
|
|
IN CHAR tagACCookieValue[ PPPOE_AC_COOKIE_TAG_LENGTH ]
|
||
|
|
);
|
||
|
|
|
||
|
|
BOOLEAN
|
||
|
|
PacketValidateACCookieTagInPADR(
|
||
|
|
IN PPPOE_PACKET* pPacket
|
||
|
|
);
|
||
|
|
|
||
|
|
//////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// Error codes and messages
|
||
|
|
//
|
||
|
|
//////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#define PPPOE_ERROR_BASE 0
|
||
|
|
|
||
|
|
#define PPPOE_NO_ERROR PPPOE_ERROR_BASE
|
||
|
|
|
||
|
|
#define PPPOE_ERROR_SERVICE_NOT_SUPPORTED PPPOE_ERROR_BASE + 1
|
||
|
|
#define PPPOE_ERROR_SERVICE_NOT_SUPPORTED_MSG "Service not supported"
|
||
|
|
#define PPPOE_ERROR_SERVICE_NOT_SUPPORTED_MSG_SIZE ( sizeof( PPPOE_ERROR_SERVICE_NOT_SUPPORTED_MSG ) / sizeof( CHAR ) )
|
||
|
|
|
||
|
|
#define PPPOE_ERROR_INVALID_AC_COOKIE_TAG PPPOE_ERROR_BASE + 2
|
||
|
|
#define PPPOE_ERROR_INVALID_AC_COOKIE_TAG_MSG "AC-Cookie tag is invalid"
|
||
|
|
#define PPPOE_ERROR_INVALID_AC_COOKIE_TAG_MSG_SIZE ( sizeof( PPPOE_ERROR_INVALID_AC_COOKIE_TAG_MSG ) / sizeof( CHAR ) )
|
||
|
|
|
||
|
|
#define PPPOE_ERROR_CLIENT_QUOTA_EXCEEDED PPPOE_ERROR_BASE + 3
|
||
|
|
#define PPPOE_ERROR_CLIENT_QUOTA_EXCEEDED_MSG "Can not accept any more connections from this machine"
|
||
|
|
#define PPPOE_ERROR_CLIENT_QUOTA_EXCEEDED_MSG_SIZE ( sizeof( PPPOE_ERROR_CLIENT_QUOTA_EXCEEDED_MSG ) / sizeof( CHAR ) )
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|