///////////////////////////////////////////////////////////////////////// // $Id$ ///////////////////////////////////////////////////////////////////////// // // Copyright (C) 2001-2017 The Bochs Project // // 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA // ///////////////////////////////////////////////////////////////////////// // eth_win32.cc - packet mover for win32 // All win32 coding by Don Becker // 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 "iodev.h" #include "netmod.h" #if BX_NETWORKING && BX_NETMOD_WIN32 // network driver plugin entry points int CDECL libwin32_net_plugin_init(plugin_t *plugin, plugintype_t type) { // Nothing here yet return 0; // Success } void CDECL libwin32_net_plugin_fini(void) { // Nothing here yet } // network driver implementation #ifndef __CYGWIN__ #include #endif // windows.h included by bochs.h #define LOG_THIS netdev-> #define BX_ETH_WIN32_LOGGING 0 #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]; char NetDev[512]; BOOL IsNT = FALSE; typedef LPADAPTER (CDECL *POpenAdapter) (LPTSTR); typedef VOID (CDECL *PCloseAdapter) (LPADAPTER); typedef BOOLEAN (CDECL *PSetHwFilter) (LPADAPTER, ULONG); typedef BOOLEAN (CDECL *PSetBpf) (LPADAPTER, struct bpf_program *); typedef BOOLEAN (CDECL *PGetAdapterNames) (PTSTR, PULONG); typedef BOOLEAN (CDECL *PSendPacket) (LPADAPTER, LPPACKET, BOOLEAN); typedef BOOLEAN (CDECL *PReceivePacket) (LPADAPTER, LPPACKET, BOOLEAN); typedef BOOLEAN (CDECL *PSetBuff) (LPADAPTER, int); typedef BOOLEAN (CDECL *PSetReadTimeout) (LPADAPTER, int); typedef LPPACKET (CDECL *PAllocatePacket) (void); typedef VOID (CDECL *PInitPacket) (LPPACKET, PVOID, UINT); typedef VOID (CDECL *PFreePacket) (LPPACKET); POpenAdapter PacketOpenAdapter; PCloseAdapter PacketCloseAdapter; PSetHwFilter PacketSetHwFilter; PSetBpf PacketSetBpf; PGetAdapterNames PacketGetAdapterNames; PSendPacket PacketSendPacket; PReceivePacket PacketReceivePacket; PSetBuff PacketSetBuff; PSetReadTimeout PacketSetReadTimeout; PAllocatePacket PacketAllocatePacket; PInitPacket PacketInitPacket; PFreePacket PacketFreePacket; // 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, eth_rx_status_t rxstat, bx_devmodel_c *dev, const char *script); void sendpkt(void *buf, unsigned io_len); private: struct bpf_insn filter[8]; int rx_timer_index; static void rx_timer_handler(void *); void rx_timer(void); #if BX_ETH_WIN32_LOGGING FILE *pktlog_txt; #endif }; // // 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, eth_rx_status_t rxstat, bx_devmodel_c *dev, const char *script) { return (new bx_win32_pktmover_c(netif, macaddr, rxh, rxstat, dev, script)); } } 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, eth_rx_status_t rxstat, bx_devmodel_c *dev, const char *script) { this->netdev = dev; BX_INFO(("win32 network driver")); // Open Packet Driver Here. DWORD dwVersion; DWORD dwWindowsMajorVersion; this->rxh = rxh; this->rxstat = rxstat; hPacket = LoadLibrary("PACKET.DLL"); memcpy(cMacAddr, macaddr, 6); if (hPacket) { PacketOpenAdapter = (POpenAdapter) GetProcAddress(hPacket, "PacketOpenAdapter"); PacketCloseAdapter = (PCloseAdapter) GetProcAddress(hPacket, "PacketCloseAdapter"); PacketSetHwFilter = (PSetHwFilter) GetProcAddress(hPacket, "PacketSetHwFilter"); PacketSetBpf = (PSetBpf) GetProcAddress(hPacket, "PacketSetBpf"); PacketGetAdapterNames = (PGetAdapterNames) GetProcAddress(hPacket, "PacketGetAdapterNames"); PacketSendPacket = (PSendPacket) GetProcAddress(hPacket, "PacketSendPacket"); PacketReceivePacket = (PReceivePacket) GetProcAddress(hPacket, "PacketReceivePacket"); PacketSetBuff = (PSetBuff) GetProcAddress(hPacket, "PacketSetBuff"); PacketSetReadTimeout = (PSetReadTimeout) GetProcAddress(hPacket, "PacketSetReadTimeout"); PacketAllocatePacket = (PAllocatePacket) GetProcAddress(hPacket, "PacketAllocatePacket"); PacketInitPacket = (PInitPacket) GetProcAddress(hPacket, "PacketInitPacket"); PacketFreePacket = (PFreePacket) 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"); #if BX_ETH_WIN32_LOGGING pktlog_txt = fopen("eth_win32-pktlog.txt", "wb"); if (!pktlog_txt) BX_PANIC(("eth_win32-pktlog.txt failed")); fprintf(pktlog_txt, "win32 packetmover readable log file\n"); fprintf(pktlog_txt, "host adapter = %s\n", netif); fprintf(pktlog_txt, "guest MAC address = "); int i; for (i=0; i<6; i++) fprintf(pktlog_txt, "%02x%s", 0xff & macaddr[i], i<5?":" : "\n"); fprintf(pktlog_txt, "--\n"); fflush(pktlog_txt); #endif } void bx_win32_pktmover_c::sendpkt(void *buf, unsigned io_len) { #if BX_ETH_WIN32_LOGGING write_pktlog_txt(pktlog_txt, (const Bit8u *)buf, io_len, 0); #endif // SendPacket Here. 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) { bx_win32_pktmover_c *class_ptr = (bx_win32_pktmover_c *) this_ptr; class_ptr->rx_timer(); } void bx_win32_pktmover_c::rx_timer(void) { // Recieve Packet ???? char *pBuf; unsigned char *pPacket; unsigned int iOffset = 0; struct bpf_hdr *hdr; int pktlen; PacketInitPacket(pkRecv, (char *)buffer, 256000); 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, broadcast_macaddr, 6) == 0) { pktlen = hdr->bh_caplen; if (pktlen < MIN_RX_PACKET_LEN) pktlen = MIN_RX_PACKET_LEN; #if BX_ETH_WIN32_LOGGING write_pktlog_txt(pktlog_txt, pPacket, pktlen, 1); #endif if (this->rxstat(this->netdev) & BX_NETDEV_RXREADY) { this->rxh(this->netdev, pPacket, pktlen); } else { BX_ERROR(("device not ready to receive data")); } } } iOffset = Packet_WORDALIGN(iOffset + (hdr->bh_hdrlen + hdr->bh_caplen)); } } } #endif /* if BX_NETWORKING && BX_NETMOD_WIN32 */