550 lines
12 KiB
C++
550 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: eth_win32.cc,v 1.4 2001-10-03 13:38:17 bdenney Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// eth_win32.cc - skeleton code for an ethernet pktmover
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// All win32 coding by Don Becker <x-odus@iname.com>
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//
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// Various networking docs:
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// http://www.graphcomp.com/info/rfc/
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// rfc0826: arp
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// rfc0903: rarp
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//
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// For ethernet support under win32 to work, you must install WinPCap.
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// Download it from http://netgroup-serv.polito.it/winpcap
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#include <windows.h>
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#include "bochs.h"
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#define LOG_THIS bx_ne2k.
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#define NDIS_PACKET_TYPE_PROMISCUOUS 0x0020
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#define Packet_ALIGNMENT sizeof(int)
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#define Packet_WORDALIGN(x) (((x)+(Packet_ALIGNMENT-1))&~(Packet_ALIGNMENT-1))
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typedef int bpf_int32;
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typedef u_int bpf_u_int32;
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/*
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* The instruction encondings.
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*/
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/* instruction classes */
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#define BPF_CLASS(code) ((code) & 0x07)
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#define BPF_LD 0x00
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#define BPF_LDX 0x01
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#define BPF_ST 0x02
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#define BPF_STX 0x03
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#define BPF_ALU 0x04
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#define BPF_JMP 0x05
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#define BPF_RET 0x06
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#define BPF_MISC 0x07
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/* ld/ldx fields */
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#define BPF_SIZE(code) ((code) & 0x18)
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#define BPF_W 0x00
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#define BPF_H 0x08
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#define BPF_B 0x10
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#define BPF_MODE(code) ((code) & 0xe0)
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#define BPF_IMM 0x00
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#define BPF_ABS 0x20
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#define BPF_IND 0x40
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#define BPF_MEM 0x60
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#define BPF_LEN 0x80
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#define BPF_MSH 0xa0
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/* alu/jmp fields */
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#define BPF_OP(code) ((code) & 0xf0)
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#define BPF_ADD 0x00
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#define BPF_SUB 0x10
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#define BPF_MUL 0x20
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#define BPF_DIV 0x30
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#define BPF_OR 0x40
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#define BPF_AND 0x50
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#define BPF_LSH 0x60
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#define BPF_RSH 0x70
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#define BPF_NEG 0x80
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#define BPF_JA 0x00
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#define BPF_JEQ 0x10
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#define BPF_JGT 0x20
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#define BPF_JGE 0x30
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#define BPF_JSET 0x40
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#define BPF_SRC(code) ((code) & 0x08)
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#define BPF_K 0x00
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#define BPF_X 0x08
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/* ret - BPF_K and BPF_X also apply */
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#define BPF_RVAL(code) ((code) & 0x18)
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#define BPF_A 0x10
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/* misc */
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#define BPF_MISCOP(code) ((code) & 0xf8)
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#define BPF_TAX 0x00
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#define BPF_TXA 0x80
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#define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }
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#define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }
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/*
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* The instruction data structure.
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*/
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struct bpf_insn {
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u_short code;
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u_char jt;
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u_char jf;
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bpf_int32 k;
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};
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struct bpf_program {
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u_int bf_len;
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struct bpf_insn *bf_insns;
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};
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struct bpf_hdr {
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struct timeval bh_tstamp; /* time stamp */
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UINT bh_caplen; /* length of captured portion */
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UINT bh_datalen; /* original length of packet */
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USHORT bh_hdrlen; /* length of bpf header (this struct
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plus alignment padding) */
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};
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#define MAX_LINK_NAME_LENGTH 64
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typedef struct _ADAPTER {
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HANDLE hFile;
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TCHAR SymbolicLink[MAX_LINK_NAME_LENGTH];
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int NumWrites;
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HANDLE ReadEvent;
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} ADAPTER, *LPADAPTER;
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typedef struct _PACKET {
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HANDLE hEvent;
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OVERLAPPED OverLapped;
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PVOID Buffer;
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UINT Length;
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UINT ulBytesReceived;
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BOOLEAN bIoComplete;
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} PACKET, *LPPACKET;
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HINSTANCE hPacket;
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LPADAPTER lpAdapterRX = 0;
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LPADAPTER lpAdapterTX = 0;
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LPPACKET pkSend;
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LPPACKET pkRecv;
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char buffer[256000];
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DWORD dwVersion, dwMajorVersion;
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char AdapterList[10][1024];
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char cMacAddr[6];
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void *rx_Arg;
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char netdev[512];
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eth_rx_handler_t rx_handler;
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LPADAPTER (*PacketOpenAdapter) (LPTSTR);
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VOID (*PacketCloseAdapter) (LPADAPTER);
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BOOLEAN (*PacketSetHwFilter) (LPADAPTER, ULONG);
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BOOLEAN (*PacketSetBpf) (LPADAPTER, struct bpf_program *);
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BOOLEAN (*PacketGetAdapterNames) (PTSTR, PULONG);
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BOOLEAN (*PacketSendPacket) (LPADAPTER, LPPACKET, BOOLEAN);
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BOOLEAN (*PacketReceivePacket) (LPADAPTER, LPPACKET, BOOLEAN);
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BOOLEAN (*PacketSetBuff) (LPADAPTER, int);
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BOOLEAN (*PacketSetReadTimeout) (LPADAPTER, int);
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LPPACKET (*PacketAllocatePacket) (void);
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VOID (*PacketInitPacket) (LPPACKET, PVOID, UINT);
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VOID (*PacketFreePacket) (LPPACKET);
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// template filter for a unicast mac address and all
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// multicast/broadcast frames
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static const struct bpf_insn macfilter[] = {
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BPF_STMT(BPF_LD|BPF_W|BPF_ABS, 2),
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BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, 0xaaaaaaaa, 0, 2),
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BPF_STMT(BPF_LD|BPF_H|BPF_ABS, 0),
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BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, 0x0000aaaa, 2, 0),
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BPF_STMT(BPF_LD|BPF_B|BPF_ABS, 0),
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BPF_JUMP(BPF_JMP|BPF_JSET|BPF_K, 0x01, 0, 1),
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BPF_STMT(BPF_RET, 1514),
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BPF_STMT(BPF_RET, 0),
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};
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//
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// Define the class. This is private to this module
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//
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class bx_win32_pktmover_c : public eth_pktmover_c {
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public:
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bx_win32_pktmover_c(const char *netif, const char *macaddr,
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eth_rx_handler_t rxh,
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void *rxarg);
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void sendpkt(void *buf, unsigned io_len);
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private:
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struct bpf_insn filter[8];
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int rx_timer_index;
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static void rx_timer_handler(void *);
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};
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//
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// Define the static class that registers the derived pktmover class,
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// and allocates one on request.
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//
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class bx_win32_locator_c : public eth_locator_c {
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public:
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bx_win32_locator_c(void) : eth_locator_c("win32") {}
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protected:
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eth_pktmover_c *allocate(const char *netif, const char *macaddr, eth_rx_handler_t rxh, void *rxarg) {
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return (new bx_win32_pktmover_c(netif, macaddr, rxh, rxarg));
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}
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} bx_win32_match;
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//
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// Define the methods for the bx_win32_pktmover derived class
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//
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// the constructor
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bx_win32_pktmover_c::bx_win32_pktmover_c(const char *netif,
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const char *macaddr,
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eth_rx_handler_t rxh,
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void *rxarg)
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{
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// Open Packet Driver Here.
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DWORD dwVersion;
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DWORD dwWindowsMajorVersion;
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struct bpf_program bp;
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BX_INFO(("bx_win32_pktmover_c"));
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rx_Arg = rxarg;
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rx_handler = rxh;
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hPacket = LoadLibrary("PACKET.DLL");
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memcpy(cMacAddr, macaddr, 6);
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if(hPacket) {
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PacketOpenAdapter = (LPADAPTER (*)(LPTSTR)) GetProcAddress(hPacket, "PacketOpenAdapter");
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PacketCloseAdapter = (VOID (*)(LPADAPTER)) GetProcAddress(hPacket, "PacketCloseAdapter");
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PacketSetHwFilter = (BOOLEAN (*)(LPADAPTER, ULONG)) GetProcAddress(hPacket, "PacketSetHwFilter");
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PacketSetBpf = (BOOLEAN (*)(LPADAPTER, struct bpf_program *)) GetProcAddress(hPacket, "PacketSetBpf");
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PacketGetAdapterNames = (BOOLEAN (*)(PTSTR, PULONG)) GetProcAddress(hPacket, "PacketGetAdapterNames");
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PacketSendPacket = (BOOLEAN (*)(LPADAPTER, LPPACKET, BOOLEAN)) GetProcAddress(hPacket, "PacketSendPacket");
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PacketReceivePacket = (BOOLEAN (*)(LPADAPTER, LPPACKET, BOOLEAN)) GetProcAddress(hPacket, "PacketReceivePacket");
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PacketSetBuff = (BOOLEAN (*)(LPADAPTER, int)) GetProcAddress(hPacket, "PacketSetBuff");
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PacketSetReadTimeout = (BOOLEAN (*)(LPADAPTER, int)) GetProcAddress(hPacket, "PacketSetReadTimeout");
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PacketAllocatePacket = (LPPACKET (*)(void)) GetProcAddress(hPacket, "PacketAllocatePacket");
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PacketInitPacket = (VOID (*)(LPPACKET, PVOID, UINT)) GetProcAddress(hPacket, "PacketInitPacket");
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PacketFreePacket = (VOID (*)(LPPACKET)) GetProcAddress(hPacket, "PacketFreePacket");
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} else {
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BX_PANIC(("Could not load WPCap Drivers for ethernet support!"));
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}
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memset(&netdev, 0, sizeof(netdev));
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dwVersion=GetVersion();
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dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion)));
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if (!(dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4))
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{ // Windows NT/2k
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int nLen = MultiByteToWideChar(CP_ACP, 0, netif, -1, NULL, NULL);
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MultiByteToWideChar(CP_ACP, 0, netif, -1, (unsigned short *)netdev, nLen);
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} else { // Win9x
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strcpy(netdev, netif);
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}
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lpAdapterRX = PacketOpenAdapter(netdev);
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if(!lpAdapterRX || (lpAdapterRX->hFile == INVALID_HANDLE_VALUE)) {
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BX_PANIC(("Could not open adapter for ethernet reception"));
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return;
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}
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lpAdapterTX = PacketOpenAdapter(netdev);
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if(!lpAdapterTX || (lpAdapterTX->hFile == INVALID_HANDLE_VALUE)) {
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BX_PANIC(("Could not open adapter for ethernet transmition"));
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return;
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}
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PacketSetHwFilter(lpAdapterRX, NDIS_PACKET_TYPE_PROMISCUOUS);
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PacketSetHwFilter(lpAdapterTX, NDIS_PACKET_TYPE_PROMISCUOUS);
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/* The code below sets a BPF mac address filter
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that seems to really kill performance, for now
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im just using code to filter, and it works
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better
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*/
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// memcpy(&this->filter, macfilter, sizeof(macfilter));
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// this->filter[1].k = (macaddr[2] & 0xff) << 24 | (macaddr[3] & 0xff) << 16 | (macaddr[4] & 0xff) << 8 | (macaddr[5] & 0xff);
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// this->filter[3].k = (macaddr[0] & 0xff) << 8 | (macaddr[1] & 0xff);
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// bp.bf_len = 8;
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// bp.bf_insns = &this->filter[0];
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// if(!PacketSetBpf(lpAdapterRX, &bp)) {
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// BX_PANIC(("Could not set mac address BPF filter"));
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// }
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PacketSetBuff(lpAdapterRX, 512000);
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PacketSetReadTimeout(lpAdapterRX, 1000);
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PacketSetBuff(lpAdapterTX, 512000);
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PacketSetReadTimeout(lpAdapterTX, 1000);
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if((pkSend = PacketAllocatePacket()) == NULL) {
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BX_PANIC(("Could not allocate a send packet"));
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}
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if((pkRecv = PacketAllocatePacket()) == NULL) {
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BX_PANIC(("Could not allocate a recv packet"));
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}
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rx_timer_index = bx_pc_system.register_timer(this, this->rx_timer_handler, 10000, 1, 1);
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}
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void
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bx_win32_pktmover_c::sendpkt(void *buf, unsigned io_len)
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{
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// SendPacket Here.
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fprintf(stderr, "[ETH-WIN32] Sending Packet: size=%i\n", io_len);
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PacketInitPacket(pkSend, (char *)buf, io_len);
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if(!PacketSendPacket(lpAdapterTX, pkSend, TRUE)) {
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fprintf(stderr, "[ETH-WIN32] Error sending packet: %lu\n", GetLastError());
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}
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}
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void bx_win32_pktmover_c::rx_timer_handler (void *this_ptr)
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{
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// Recieve Packet ????
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char *pBuf;
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unsigned char *pPacket;
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unsigned int iOffset = 0;
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struct bpf_hdr *hdr;
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static unsigned char bcast_addr[6] = {0xff,0xff,0xff,0xff,0xff,0xff};
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PacketInitPacket(pkRecv, (char *)buffer, 256000);
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PacketReceivePacket(lpAdapterRX, pkRecv, TRUE);
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pBuf = (char *)pkRecv->Buffer;
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iOffset = 0;
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while(iOffset < pkRecv->ulBytesReceived) {
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hdr = (struct bpf_hdr *)(pBuf + iOffset);
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pPacket = (unsigned char *)(pBuf + iOffset + hdr->bh_hdrlen);
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if(memcmp(pPacket + 6, cMacAddr, 6) == 0) return;
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if(memcmp(pPacket, cMacAddr, 6) == 0 || memcmp(pPacket, bcast_addr, 6) == 0 || pPacket[0] & 0x01) {
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fprintf(stderr, "[ETH-WIN32] 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]);
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(*rx_handler)(rx_Arg, pPacket, hdr->bh_caplen);
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}
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iOffset = Packet_WORDALIGN(iOffset + (hdr->bh_hdrlen + hdr->bh_caplen));
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}
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}
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