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Bochs/bochs/iodev/eth_win32.cc
Volker Ruppert 64b66e709e - converted ne2k device to a plugin 
- moved ne2k presence check to devices.cc
- added special make rules for the ne2k and the lowlevel network support
- added macro for the debug feature of the ne2k
2002-11-19 18:56:39 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id: eth_win32.cc,v 1.16 2002-11-19 18:56:38 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// eth_win32.cc - packet mover for win32
// All win32 coding by Don Becker <x-odus@iname.com>
// with patches from various sources
//
// Various networking docs:
// http://www.graphcomp.com/info/rfc/
// rfc0826: arp
// rfc0903: rarp
//
// For ethernet support under win32 to work, you must install WinPCap.
// Download it from http://netgroup-serv.polito.it/winpcap
// Define BX_PLUGGABLE in files that can be compiled into plugins. For
// platforms that require a special tag on exported symbols, BX_PLUGGABLE
// is used to know when we are exporting symbols and when we are importing.
#define BX_PLUGGABLE
#include "bochs.h"
#if BX_NE2K_SUPPORT
// windows.h included by bochs.h
#define LOG_THIS bx_devices.pluginNE2kDevice->
#define NDIS_PACKET_TYPE_PROMISCUOUS 0x0020
#define Packet_ALIGNMENT sizeof(int)
#define Packet_WORDALIGN(x) (((x)+(Packet_ALIGNMENT-1))&~(Packet_ALIGNMENT-1))
typedef int bpf_int32;
typedef u_int bpf_u_int32;
/*
* The instruction encondings.
*/
/* instruction classes */
#define BPF_CLASS(code) ((code) & 0x07)
#define BPF_LD 0x00
#define BPF_LDX 0x01
#define BPF_ST 0x02
#define BPF_STX 0x03
#define BPF_ALU 0x04
#define BPF_JMP 0x05
#define BPF_RET 0x06
#define BPF_MISC 0x07
/* ld/ldx fields */
#define BPF_SIZE(code) ((code) & 0x18)
#define BPF_W 0x00
#define BPF_H 0x08
#define BPF_B 0x10
#define BPF_MODE(code) ((code) & 0xe0)
#define BPF_IMM 0x00
#define BPF_ABS 0x20
#define BPF_IND 0x40
#define BPF_MEM 0x60
#define BPF_LEN 0x80
#define BPF_MSH 0xa0
/* alu/jmp fields */
#define BPF_OP(code) ((code) & 0xf0)
#define BPF_ADD 0x00
#define BPF_SUB 0x10
#define BPF_MUL 0x20
#define BPF_DIV 0x30
#define BPF_OR 0x40
#define BPF_AND 0x50
#define BPF_LSH 0x60
#define BPF_RSH 0x70
#define BPF_NEG 0x80
#define BPF_JA 0x00
#define BPF_JEQ 0x10
#define BPF_JGT 0x20
#define BPF_JGE 0x30
#define BPF_JSET 0x40
#define BPF_SRC(code) ((code) & 0x08)
#define BPF_K 0x00
#define BPF_X 0x08
/* ret - BPF_K and BPF_X also apply */
#define BPF_RVAL(code) ((code) & 0x18)
#define BPF_A 0x10
/* misc */
#define BPF_MISCOP(code) ((code) & 0xf8)
#define BPF_TAX 0x00
#define BPF_TXA 0x80
#define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }
#define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }
/*
* The instruction data structure.
*/
struct bpf_insn {
u_short code;
u_char jt;
u_char jf;
bpf_int32 k;
};
struct bpf_program {
u_int bf_len;
struct bpf_insn *bf_insns;
};
struct bpf_hdr {
struct timeval bh_tstamp; /* time stamp */
UINT bh_caplen; /* length of captured portion */
UINT bh_datalen; /* original length of packet */
USHORT bh_hdrlen; /* length of bpf header (this struct
plus alignment padding) */
};
#define MAX_LINK_NAME_LENGTH 64
// Why don't these definitions come from including winpcap.h or something?
// -Bryce
typedef struct _ADAPTER {
HANDLE hFile;
TCHAR SymbolicLink[MAX_LINK_NAME_LENGTH];
int NumWrites;
HANDLE ReadEvent;
UINT ReadTimeOut; // WARNING: maybe invalid before winpcap 2.2
} ADAPTER, *LPADAPTER;
typedef struct _PACKET {
HANDLE hEvent;
OVERLAPPED OverLapped;
PVOID Buffer;
UINT Length;
UINT ulBytesReceived;
BOOLEAN bIoComplete;
} PACKET, *LPPACKET;
HINSTANCE hPacket;
LPADAPTER lpAdapter = 0;
LPPACKET pkSend;
LPPACKET pkRecv;
char buffer[256000];
DWORD dwVersion, dwMajorVersion;
char AdapterList[10][1024];
char cMacAddr[6];
void *rx_Arg;
char netdev[512];
BOOL IsNT = FALSE;
eth_rx_handler_t rx_handler;
LPADAPTER (*PacketOpenAdapter) (LPTSTR);
VOID (*PacketCloseAdapter) (LPADAPTER);
BOOLEAN (*PacketSetHwFilter) (LPADAPTER, ULONG);
BOOLEAN (*PacketSetBpf) (LPADAPTER, struct bpf_program *);
BOOLEAN (*PacketGetAdapterNames) (PTSTR, PULONG);
BOOLEAN (*PacketSendPacket) (LPADAPTER, LPPACKET, BOOLEAN);
BOOLEAN (*PacketReceivePacket) (LPADAPTER, LPPACKET, BOOLEAN);
BOOLEAN (*PacketSetBuff) (LPADAPTER, int);
BOOLEAN (*PacketSetReadTimeout) (LPADAPTER, int);
LPPACKET (*PacketAllocatePacket) (void);
VOID (*PacketInitPacket) (LPPACKET, PVOID, UINT);
VOID (*PacketFreePacket) (LPPACKET);
// template filter for a unicast mac address and all
// multicast/broadcast frames
static const struct bpf_insn macfilter[] = {
BPF_STMT(BPF_LD|BPF_W|BPF_ABS, 2),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, 0xaaaaaaaa, 0, 2),
BPF_STMT(BPF_LD|BPF_H|BPF_ABS, 0),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, 0x0000aaaa, 2, 0),
BPF_STMT(BPF_LD|BPF_B|BPF_ABS, 0),
BPF_JUMP(BPF_JMP|BPF_JSET|BPF_K, 0x01, 0, 1),
BPF_STMT(BPF_RET, 1514),
BPF_STMT(BPF_RET, 0),
};
//
// Define the class. This is private to this module
//
class bx_win32_pktmover_c : public eth_pktmover_c {
public:
bx_win32_pktmover_c(const char *netif, const char *macaddr,
eth_rx_handler_t rxh, void *rxarg);
void sendpkt(void *buf, unsigned io_len);
private:
struct bpf_insn filter[8];
int rx_timer_index;
static void rx_timer_handler(void *);
};
//
// Define the static class that registers the derived pktmover class,
// and allocates one on request.
//
class bx_win32_locator_c : public eth_locator_c {
public:
bx_win32_locator_c(void) : eth_locator_c("win32") {}
protected:
eth_pktmover_c *allocate(const char *netif, const char *macaddr, eth_rx_handler_t rxh, void *rxarg) {
return (new bx_win32_pktmover_c(netif, macaddr, rxh, rxarg));
}
} bx_win32_match;
//
// Define the methods for the bx_win32_pktmover derived class
//
// the constructor
bx_win32_pktmover_c::bx_win32_pktmover_c(const char *netif,
const char *macaddr,
eth_rx_handler_t rxh,
void *rxarg)
{
// Open Packet Driver Here.
DWORD dwVersion;
DWORD dwWindowsMajorVersion;
struct bpf_program bp;
BX_INFO(("bx_win32_pktmover_c"));
rx_Arg = rxarg;
rx_handler = rxh;
hPacket = LoadLibrary("PACKET.DLL");
memcpy(cMacAddr, macaddr, 6);
if(hPacket) {
PacketOpenAdapter = (LPADAPTER (*)(LPTSTR)) GetProcAddress(hPacket, "PacketOpenAdapter");
PacketCloseAdapter = (VOID (*)(LPADAPTER)) GetProcAddress(hPacket, "PacketCloseAdapter");
PacketSetHwFilter = (BOOLEAN (*)(LPADAPTER, ULONG)) GetProcAddress(hPacket, "PacketSetHwFilter");
PacketSetBpf = (BOOLEAN (*)(LPADAPTER, struct bpf_program *)) GetProcAddress(hPacket, "PacketSetBpf");
PacketGetAdapterNames = (BOOLEAN (*)(PTSTR, PULONG)) GetProcAddress(hPacket, "PacketGetAdapterNames");
PacketSendPacket = (BOOLEAN (*)(LPADAPTER, LPPACKET, BOOLEAN)) GetProcAddress(hPacket, "PacketSendPacket");
PacketReceivePacket = (BOOLEAN (*)(LPADAPTER, LPPACKET, BOOLEAN)) GetProcAddress(hPacket, "PacketReceivePacket");
PacketSetBuff = (BOOLEAN (*)(LPADAPTER, int)) GetProcAddress(hPacket, "PacketSetBuff");
PacketSetReadTimeout = (BOOLEAN (*)(LPADAPTER, int)) GetProcAddress(hPacket, "PacketSetReadTimeout");
PacketAllocatePacket = (LPPACKET (*)(void)) GetProcAddress(hPacket, "PacketAllocatePacket");
PacketInitPacket = (VOID (*)(LPPACKET, PVOID, UINT)) GetProcAddress(hPacket, "PacketInitPacket");
PacketFreePacket = (VOID (*)(LPPACKET)) GetProcAddress(hPacket, "PacketFreePacket");
} else {
BX_PANIC(("Could not load WPCap Drivers for ethernet support!"));
}
memset(&netdev, 0, sizeof(netdev));
dwVersion=GetVersion();
dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion)));
if (!(dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4))
{ // Windows NT/2k
int nLen = MultiByteToWideChar(CP_ACP, 0, netif, -1, NULL, 0);
MultiByteToWideChar(CP_ACP, 0, netif, -1, (WCHAR *)netdev, nLen);
IsNT = TRUE;
} else { // Win9x
strcpy(netdev, netif);
}
lpAdapter = PacketOpenAdapter(netdev);
if(!lpAdapter || (lpAdapter->hFile == INVALID_HANDLE_VALUE)) {
BX_PANIC(("Could not open adapter for ethernet reception"));
return;
}
PacketSetHwFilter(lpAdapter, NDIS_PACKET_TYPE_PROMISCUOUS);
/* The code below sets a BPF mac address filter
that seems to really kill performance, for now
im just using code to filter, and it works
better
*/
// memcpy(&this->filter, macfilter, sizeof(macfilter));
// this->filter[1].k = (macaddr[2] & 0xff) << 24 | (macaddr[3] & 0xff) << 16 | (macaddr[4] & 0xff) << 8 | (macaddr[5] & 0xff);
// this->filter[3].k = (macaddr[0] & 0xff) << 8 | (macaddr[1] & 0xff);
// bp.bf_len = 8;
// bp.bf_insns = &this->filter[0];
// if(!PacketSetBpf(lpAdapter, &bp)) {
// BX_PANIC(("Could not set mac address BPF filter"));
// }
PacketSetBuff(lpAdapter, 512000);
PacketSetReadTimeout(lpAdapter, -1);
if((pkSend = PacketAllocatePacket()) == NULL) {
BX_PANIC(("Could not allocate a send packet"));
}
if((pkRecv = PacketAllocatePacket()) == NULL) {
BX_PANIC(("Could not allocate a recv packet"));
}
rx_timer_index = bx_pc_system.register_timer(this, this->rx_timer_handler, 10000, 1, 1, "eth_win32");
}
void
bx_win32_pktmover_c::sendpkt(void *buf, unsigned io_len)
{
// SendPacket Here.
//fprintf(stderr, "[ETH-WIN32] Sending Packet: size=%i\n", io_len);
PacketInitPacket(pkSend, (char *)buf, io_len);
if(!PacketSendPacket(lpAdapter, pkSend, TRUE)) {
fprintf(stderr, "[ETH-WIN32] Error sending packet: %lu\n", GetLastError());
}
}
void bx_win32_pktmover_c::rx_timer_handler (void *this_ptr)
{
// Recieve Packet ????
char *pBuf;
unsigned char *pPacket;
unsigned int iOffset = 0;
struct bpf_hdr *hdr;
int pktlen;
static unsigned char bcast_addr[6] = {0xff,0xff,0xff,0xff,0xff,0xff};
PacketInitPacket(pkRecv, (char *)buffer, 256000);
//fprintf(stderr, "[ETH-WIN32] poll packet\n");
if (WaitForSingleObject(lpAdapter->ReadEvent,0) == WAIT_OBJECT_0 || IsNT) {
PacketReceivePacket(lpAdapter, pkRecv, TRUE);
pBuf = (char *)pkRecv->Buffer;
iOffset = 0;
while(iOffset < pkRecv->ulBytesReceived)
{
hdr = (struct bpf_hdr *)(pBuf + iOffset);
pPacket = (unsigned char *)(pBuf + iOffset + hdr->bh_hdrlen);
if (memcmp(pPacket + 6, cMacAddr, 6) != 0) // src field != ours
{
if(memcmp(pPacket, cMacAddr, 6) == 0 || memcmp(pPacket, bcast_addr, 6) == 0)
{
//fprintf(stderr, "[ETH-WIN32] RX packet: size=%i, dst=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, src=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n", hdr->bh_caplen, pPacket[0], pPacket[1], pPacket[2], pPacket[3], pPacket[4], pPacket[5], pPacket[6], pPacket[7], pPacket[8], pPacket[9], pPacket[10], pPacket[11]);
pktlen = hdr->bh_caplen;
if (pktlen < 60) pktlen = 60;
(*rx_handler)(rx_Arg, pPacket, pktlen);
}
}
iOffset = Packet_WORDALIGN(iOffset + (hdr->bh_hdrlen + hdr->bh_caplen));
}
}
}
#endif /* if BX_NE2K_SUPPORT */
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