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/*++
Copyright(c) 1998,99 Microsoft Corporation
Module Name:
util.h
Abstract:
Windows Load Balancing Service (WLBS) Driver - media support definitions
Author:
kyrilf
--*/
#ifndef _Util_h_
#define _Util_h_
#include <ndis.h>
#include <xfilter.h>
#include "wlbsparm.h"
/* CONSTANTS */
/* media-specific constants */
#define ETHERNET_DESTINATION_FIELD_OFFSET 0
#define ETHERNET_SOURCE_FIELD_OFFSET 6
#define ETHERNET_LENGTH_FIELD_OFFSET 12
#define ETHERNET_LENGTH_FIELD_SIZE 2
#define ETHERNET_ADDRESS_FIELD_SIZE 6
#define ETHERNET_HEADER_SIZE 14
/* flags are in byte 0 of ethernet address */
#define ETHERNET_GROUP_FLAG 0x1
#define ETHERNET_LAA_FLAG 0x2
/* max frame size we expect to generate */
#define CVY_MAX_FRAME_SIZE 1500
/* TYPES */
#pragma pack(1)
/* ethernet media header type */
typedef struct{ UCHAR data [ETHERNET_ADDRESS_FIELD_SIZE];}CVY_ETHERNET_ADR, * PCVY_ETHERNET_ADR;
typedef struct{ UCHAR data [ETHERNET_LENGTH_FIELD_SIZE];}CVY_ETHERNET_LEN, * PCVY_ETHERNET_LEN;
typedef struct{ CVY_ETHERNET_ADR dst; CVY_ETHERNET_ADR src; CVY_ETHERNET_LEN len;}CVY_ETHERNET_HDR, * PCVY_ETHERNET_HDR;
typedef union{ CVY_ETHERNET_HDR ethernet;}CVY_MEDIA_HDR, * PCVY_MEDIA_HDR;
typedef union{ CVY_ETHERNET_ADR ethernet;}CVY_MAC_ADR, * PCVY_MAC_ADR;
/* V1.3.1b medium independent MAC address manipulation routines - note that these
are optimized for speed and assume that all mediums have the same size addresses. NOTE: The seemingly silly format of these macros is simply to leave fenceposts for the future additions of other supported mediums. */#define CVY_MAC_SRC_OFF(m) ((m) == NdisMedium802_3 ? ETHERNET_SOURCE_FIELD_OFFSET : ETHERNET_SOURCE_FIELD_OFFSET)
#define CVY_MAC_DST_OFF(m) ((m) == NdisMedium802_3 ? ETHERNET_DESTINATION_FIELD_OFFSET : ETHERNET_DESTINATION_FIELD_OFFSET)
#define CVY_MAC_HDR_LEN(m) ((m) == NdisMedium802_3 ? sizeof (CVY_ETHERNET_HDR) : sizeof (CVY_ETHERNET_HDR))
#define CVY_MAC_ADDR_LEN(m) ((m) == NdisMedium802_3 ? ETHERNET_ADDRESS_FIELD_SIZE : ETHERNET_ADDRESS_FIELD_SIZE)
#define CVY_MAC_ADDR_BCAST(m,a) (((PUCHAR)(a))[0] == 0xff)
#define CVY_MAC_ADDR_MCAST(m,a) (((PUCHAR)(a))[0] & 0x1)
#define CVY_MAC_ADDR_GROUP_SET(m,a) ((((PUCHAR)(a))[0]) |= 0x1)
#define CVY_MAC_ADDR_GROUP_TOGGLE(m,a) ((((PUCHAR)(a))[0]) ^= 0x1)
#define CVY_MAC_ADDR_LAA_SET(m,a) ((((PUCHAR)(a))[0]) |= 0x2)
#define CVY_MAC_ADDR_LAA_TOGGLE(m,a) ((((PUCHAR)(a))[0]) ^= 0x2)
#define CVY_MAC_ADDR_COMP(m,a,b) ((* (ULONG UNALIGNED *)(a) == * (ULONG UNALIGNED *)(b)) && \
(* (USHORT UNALIGNED *)((PUCHAR)(a) + sizeof (ULONG)) == \ * (USHORT UNALIGNED *)((PUCHAR)(b) + sizeof (ULONG))))#define CVY_MAC_ADDR_COPY(m,d,s) ((* (ULONG UNALIGNED *)(d) = * (ULONG UNALIGNED *)(s)), \
(* (USHORT UNALIGNED *)((PUCHAR)(d) + sizeof (ULONG)) = \ * (USHORT UNALIGNED *)((PUCHAR)(s) + sizeof (ULONG))))#if DBG
#define CVY_MAC_ADDR_PRINT(m,s,a) DbgPrint ("%s %02X-%02X-%02X-%02X-%02X-%02X\n", s, ((PUCHAR)(a))[0], ((PUCHAR)(a))[1], ((PUCHAR)(a))[2], ((PUCHAR)(a))[3], ((PUCHAR)(a))[4], ((PUCHAR)(a))[5])
#else
#define CVY_MAC_ADDR_PRINT(m,s,a)
#endif
/* Medium type field manipulation routines */#define CVY_ETHERNET_ETYPE_SET(p,l) ((PUCHAR) (p)) [ETHERNET_LENGTH_FIELD_OFFSET] = (UCHAR) ((l) >> 8); \
((PUCHAR) (p)) [ETHERNET_LENGTH_FIELD_OFFSET + 1] = (UCHAR) (l)#define CVY_ETHERNET_ETYPE_GET(p) (((USHORT) ((PUCHAR) (p)) [ETHERNET_LENGTH_FIELD_OFFSET]) << 8) | \
((USHORT) ((PUCHAR) (p)) [ETHERNET_LENGTH_FIELD_OFFSET + 1])
#pragma pack()
#endif /* _Util_h_ */
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