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/*********************************************************
* Copyright (C) 1998 VMware, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of the Common
* Development and Distribution License (the "License") version 1.0
* and no later version. You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* http://www.opensource.org/licenses/cddl1.php
*
* See the License for the specific language governing permissions
* and limitations under the License.
*
*********************************************************/
/************************************************************
*
* net.h
*
* This file should contain all network global defines.
* No vlance/vmxnet/vnet/vmknet specific stuff should be
* put here only defines used/usable by all network code.
* --gustav
*
************************************************************/
#ifndef VMWARE_DEVICES_NET_H
#define VMWARE_DEVICES_NET_H
#define INCLUDE_ALLOW_USERLEVEL
#define INCLUDE_ALLOW_MODULE
#define INCLUDE_ALLOW_VMMEXT
#include "includeCheck.h"
#include "vm_device_version.h"
#define ETHERNET_MTU 1518
#define ETH_MIN_FRAME_LEN 60
#ifndef ETHER_ADDR_LEN
#define ETHER_ADDR_LEN 6 /* length of MAC address */
#endif
#define ETH_HEADER_LEN 14 /* length of Ethernet header */
#define IP_ADDR_LEN 4 /* length of IPv4 address */
#define IP_HEADER_LEN 20 /* minimum length of IPv4 header */
#define ETHER_MAX_QUEUED_PACKET 1600
/*
* State's that a NIC can be in currently we only use this
* in VLance but if we implement/emulate new adapters that
* we also want to be able to morph a new corresponding
* state should be added.
*/
#define LANCE_CHIP 0x2934
#define VMXNET_CHIP 0x4392
/*
* Size of reserved IO space needed by the LANCE adapter and
* the VMXNET adapter. If you add more ports to Vmxnet than
* there is reserved space you must bump VMXNET_CHIP_IO_RESV_SIZE.
* The sizes must be powers of 2.
*/
#define LANCE_CHIP_IO_RESV_SIZE 0x20
#define VMXNET_CHIP_IO_RESV_SIZE 0x40
#define MORPH_PORT_SIZE 4
#ifdef USERLEVEL
/*
*----------------------------------------------------------------------------
*
* Net_AddAddrToLADRF --
*
* Given a MAC address, sets the corresponding bit in the LANCE style
* Logical Address Filter 'ladrf'.
* The caller should have initialized the ladrf to all 0's, as this
* function only ORs on a bit in the array.
* 'addr' is presumed to be ETHER_ADDR_LEN in size;
* 'ladrf' is presumed to point to a 64-bit vector.
*
* Derived from a long history of derivations, originally inspired by
* sample code from the AMD "Network Products: Ethernet Controllers 1998
* Data Book, Book 2", pages 1-53..1-55.
*
* Returns:
* None.
*
* Side effects:
* Updates 'ladrf'.
*
*----------------------------------------------------------------------------
*/
static INLINE void
Net_AddAddrToLadrf(const uint8 *addr, // IN: pointer to MAC address
uint8 *ladrf) // IN/OUT: pointer to ladrf
{
#define CRC_POLYNOMIAL_BE 0x04c11db7UL /* Ethernet CRC, big endian */
uint16 hashcode;
int32 crc = 0xffffffff; /* init CRC for each address */
int32 j;
int32 bit;
int32 byte;
ASSERT(addr);
ASSERT(ladrf);
for (byte = 0; byte < ETHER_ADDR_LEN; byte++) { /* for each address byte */
/* process each address bit */
for (bit = *addr++, j = 0;
j < 8;
j++, bit >>= 1) {
crc = (crc << 1) ^ ((((crc < 0 ? 1 : 0) ^ bit) & 0x01) ?
CRC_POLYNOMIAL_BE : 0);
}
}
hashcode = (crc & 1); /* hashcode is 6 LSb of CRC ... */
for (j = 0; j < 5; j++) { /* ... in reverse order. */
hashcode = (hashcode << 1) | ((crc>>=1) & 1);
}
ladrf[hashcode >> 3] |= 1 << (hashcode & 0x07);
}
#endif // USERLEVEL
#endif // VMWARE_DEVICES_NET_H
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