489 lines
13 KiB
C++
489 lines
13 KiB
C++
/*
|
|
* ether.cpp - Ethernet device driver
|
|
*
|
|
* Basilisk II (C) 1997-2008 Christian Bauer
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/*
|
|
* SEE ALSO
|
|
* Inside Macintosh: Devices, chapter 1 "Device Manager"
|
|
* Inside Macintosh: Networking, chapter 11 "Ethernet, Token Ring, and FDDI"
|
|
* Inside AppleTalk, chapter 3 "Ethernet and TokenTalk Link Access Protocols"
|
|
*/
|
|
|
|
#include "sysdeps.h"
|
|
|
|
#include <string.h>
|
|
#include <map>
|
|
|
|
#if SUPPORTS_UDP_TUNNEL
|
|
#include <netinet/in.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
#include <netdb.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#endif
|
|
|
|
#include "cpu_emulation.h"
|
|
#include "main.h"
|
|
#include "macos_util.h"
|
|
#include "emul_op.h"
|
|
#include "prefs.h"
|
|
#include "ether.h"
|
|
#include "ether_defs.h"
|
|
|
|
#ifndef NO_STD_NAMESPACE
|
|
using std::map;
|
|
#endif
|
|
|
|
#define DEBUG 0
|
|
#include "debug.h"
|
|
|
|
#define MONITOR 0
|
|
|
|
|
|
#ifdef __BEOS__
|
|
#define CLOSESOCKET closesocket
|
|
#else
|
|
#define CLOSESOCKET close
|
|
#endif
|
|
|
|
|
|
// Global variables
|
|
uint8 ether_addr[6]; // Ethernet address (set by ether_init())
|
|
static bool net_open = false; // Flag: initialization succeeded, network device open (set by EtherInit())
|
|
|
|
static bool udp_tunnel = false; // Flag: tunnelling AppleTalk over UDP using BSD socket API
|
|
static uint16 udp_port;
|
|
static int udp_socket = -1;
|
|
|
|
// Mac address of driver data in MacOS RAM
|
|
uint32 ether_data = 0;
|
|
|
|
// Attached network protocols for UDP tunneling, maps protocol type to MacOS handler address
|
|
static map<uint16, uint32> udp_protocols;
|
|
|
|
|
|
/*
|
|
* Initialization
|
|
*/
|
|
|
|
void EtherInit(void)
|
|
{
|
|
net_open = false;
|
|
udp_tunnel = false;
|
|
|
|
#if SUPPORTS_UDP_TUNNEL
|
|
// UDP tunnelling requested?
|
|
if (PrefsFindBool("udptunnel")) {
|
|
udp_tunnel = true;
|
|
udp_port = PrefsFindInt32("udpport");
|
|
|
|
// Open UDP socket
|
|
udp_socket = socket(PF_INET, SOCK_DGRAM, 0);
|
|
if (udp_socket < 0) {
|
|
perror("socket");
|
|
return;
|
|
}
|
|
|
|
// Bind to specified address and port
|
|
struct sockaddr_in sa;
|
|
memset(&sa, 0, sizeof(sa));
|
|
sa.sin_family = AF_INET;
|
|
sa.sin_addr.s_addr = INADDR_ANY;
|
|
sa.sin_port = htons(udp_port);
|
|
if (bind(udp_socket, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
|
|
perror("bind");
|
|
CLOSESOCKET(udp_socket);
|
|
udp_socket = -1;
|
|
return;
|
|
}
|
|
|
|
// Retrieve local IP address (or at least one of them)
|
|
socklen_t sa_length = sizeof(sa);
|
|
getsockname(udp_socket, (struct sockaddr *)&sa, &sa_length);
|
|
uint32 udp_ip = sa.sin_addr.s_addr;
|
|
if (udp_ip == INADDR_ANY || udp_ip == INADDR_LOOPBACK) {
|
|
char name[256];
|
|
gethostname(name, sizeof(name));
|
|
struct hostent *local = gethostbyname(name);
|
|
if (local)
|
|
udp_ip = *(uint32 *)local->h_addr_list[0];
|
|
}
|
|
udp_ip = ntohl(udp_ip);
|
|
|
|
// Construct dummy Ethernet address from local IP address
|
|
ether_addr[0] = 'B';
|
|
ether_addr[1] = '2';
|
|
ether_addr[2] = udp_ip >> 24;
|
|
ether_addr[3] = udp_ip >> 16;
|
|
ether_addr[4] = udp_ip >> 8;
|
|
ether_addr[5] = udp_ip;
|
|
D(bug("Ethernet address %02x %02x %02x %02x %02x %02x\n", ether_addr[0], ether_addr[1], ether_addr[2], ether_addr[3], ether_addr[4], ether_addr[5]));
|
|
|
|
// Set socket options
|
|
int on = 1;
|
|
#ifdef __BEOS__
|
|
setsockopt(udp_socket, SOL_SOCKET, SO_NONBLOCK, &on, sizeof(on));
|
|
#else
|
|
setsockopt(udp_socket, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on));
|
|
ioctl(udp_socket, FIONBIO, &on);
|
|
#endif
|
|
|
|
// Start thread for packet reception
|
|
if (!ether_start_udp_thread(udp_socket)) {
|
|
CLOSESOCKET(udp_socket);
|
|
udp_socket = -1;
|
|
return;
|
|
}
|
|
|
|
net_open = true;
|
|
} else
|
|
#endif
|
|
if (ether_init())
|
|
net_open = true;
|
|
}
|
|
|
|
|
|
/*
|
|
* Deinitialization
|
|
*/
|
|
|
|
void EtherExit(void)
|
|
{
|
|
if (net_open) {
|
|
#if SUPPORTS_UDP_TUNNEL
|
|
if (udp_tunnel) {
|
|
if (udp_socket >= 0) {
|
|
ether_stop_udp_thread();
|
|
CLOSESOCKET(udp_socket);
|
|
udp_socket = -1;
|
|
}
|
|
} else
|
|
#endif
|
|
ether_exit();
|
|
net_open = false;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Reset
|
|
*/
|
|
|
|
void EtherReset(void)
|
|
{
|
|
udp_protocols.clear();
|
|
ether_reset();
|
|
}
|
|
|
|
|
|
/*
|
|
* Check whether Ethernet address is AppleTalk or Ethernet broadcast address
|
|
*/
|
|
|
|
static inline bool is_apple_talk_broadcast(uint8 *p)
|
|
{
|
|
return p[0] == 0x09 && p[1] == 0x00 && p[2] == 0x07
|
|
&& p[3] == 0xff && p[4] == 0xff && p[5] == 0xff;
|
|
}
|
|
|
|
static inline bool is_ethernet_broadcast(uint8 *p)
|
|
{
|
|
return p[0] == 0xff && p[1] == 0xff && p[2] == 0xff
|
|
&& p[3] == 0xff && p[4] == 0xff && p[5] == 0xff;
|
|
}
|
|
|
|
|
|
/*
|
|
* Driver Open() routine
|
|
*/
|
|
|
|
int16 EtherOpen(uint32 pb, uint32 dce)
|
|
{
|
|
D(bug("EtherOpen\n"));
|
|
|
|
// Allocate driver data
|
|
M68kRegisters r;
|
|
r.d[0] = SIZEOF_etherdata;
|
|
Execute68kTrap(0xa71e, &r); // NewPtrSysClear()
|
|
if (r.a[0] == 0)
|
|
return openErr;
|
|
ether_data = r.a[0];
|
|
D(bug(" data %08x\n", ether_data));
|
|
|
|
WriteMacInt16(ether_data + ed_DeferredTask + qType, dtQType);
|
|
WriteMacInt32(ether_data + ed_DeferredTask + dtAddr, ether_data + ed_Code);
|
|
WriteMacInt32(ether_data + ed_DeferredTask + dtParam, ether_data + ed_Result);
|
|
// Deferred function for signalling that packet write is complete (pointer to mydtResult in a1)
|
|
WriteMacInt16(ether_data + ed_Code, 0x2019); // move.l (a1)+,d0 (result)
|
|
WriteMacInt16(ether_data + ed_Code + 2, 0x2251); // move.l (a1),a1 (dce)
|
|
WriteMacInt32(ether_data + ed_Code + 4, 0x207808fc); // move.l JIODone,a0
|
|
WriteMacInt16(ether_data + ed_Code + 8, 0x4ed0); // jmp (a0)
|
|
|
|
WriteMacInt32(ether_data + ed_DCE, dce);
|
|
// ReadPacket/ReadRest routines
|
|
WriteMacInt16(ether_data + ed_ReadPacket, 0x6010); // bra 2
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 2, 0x3003); // move.w d3,d0
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 4, 0x9041); // sub.w d1,d0
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 6, 0x4a43); // tst.w d3
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 8, 0x6702); // beq 1
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 10, M68K_EMUL_OP_ETHER_READ_PACKET);
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 12, 0x3600); //1 move.w d0,d3
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 14, 0x7000); // moveq #0,d0
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 16, 0x4e75); // rts
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 18, M68K_EMUL_OP_ETHER_READ_PACKET); //2
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 20, 0x4a43); // tst.w d3
|
|
WriteMacInt16(ether_data + ed_ReadPacket + 22, 0x4e75); // rts
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Driver Control() routine
|
|
*/
|
|
|
|
int16 EtherControl(uint32 pb, uint32 dce)
|
|
{
|
|
uint16 code = ReadMacInt16(pb + csCode);
|
|
D(bug("EtherControl %d\n", code));
|
|
switch (code) {
|
|
case 1: // KillIO
|
|
return -1;
|
|
|
|
case kENetAddMulti: // Add multicast address
|
|
D(bug(" AddMulti %08x%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4)));
|
|
if (net_open && !udp_tunnel)
|
|
return ether_add_multicast(pb);
|
|
return noErr;
|
|
|
|
case kENetDelMulti: // Delete multicast address
|
|
D(bug(" DelMulti %08x%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4)));
|
|
if (net_open && !udp_tunnel)
|
|
return ether_del_multicast(pb);
|
|
return noErr;
|
|
|
|
case kENetAttachPH: { // Attach protocol handler
|
|
uint16 type = ReadMacInt16(pb + eProtType);
|
|
uint32 handler = ReadMacInt32(pb + ePointer);
|
|
D(bug(" AttachPH prot %04x, handler %08x\n", type, handler));
|
|
if (net_open) {
|
|
if (udp_tunnel) {
|
|
if (udp_protocols.find(type) != udp_protocols.end())
|
|
return lapProtErr;
|
|
udp_protocols[type] = handler;
|
|
} else
|
|
return ether_attach_ph(type, handler);
|
|
}
|
|
return noErr;
|
|
}
|
|
|
|
case kENetDetachPH: { // Detach protocol handler
|
|
uint16 type = ReadMacInt16(pb + eProtType);
|
|
D(bug(" DetachPH prot %04x\n", type));
|
|
if (net_open) {
|
|
if (udp_tunnel) {
|
|
if (udp_protocols.erase(type) == 0)
|
|
return lapProtErr;
|
|
} else
|
|
return ether_detach_ph(type);
|
|
}
|
|
return noErr;
|
|
}
|
|
|
|
case kENetWrite: { // Transmit raw Ethernet packet
|
|
uint32 wds = ReadMacInt32(pb + ePointer);
|
|
D(bug(" EtherWrite "));
|
|
if (ReadMacInt16(wds) < 14)
|
|
return eLenErr; // Header incomplete
|
|
|
|
// Set source address
|
|
uint32 hdr = ReadMacInt32(wds + 2);
|
|
Host2Mac_memcpy(hdr + 6, ether_addr, 6);
|
|
D(bug("to %08x%04x, type %04x\n", ReadMacInt32(hdr), ReadMacInt16(hdr + 4), ReadMacInt16(hdr + 12)));
|
|
|
|
if (net_open) {
|
|
#if SUPPORTS_UDP_TUNNEL
|
|
if (udp_tunnel) {
|
|
|
|
// Copy packet to buffer
|
|
uint8 packet[1514];
|
|
int len = ether_wds_to_buffer(wds, packet);
|
|
|
|
// Extract destination address
|
|
uint32 dest_ip;
|
|
if (len >= 6 && packet[0] == 'B' && packet[1] == '2')
|
|
dest_ip = (packet[2] << 24) | (packet[3] << 16) | (packet[4] << 8) | packet[5];
|
|
else if (is_apple_talk_broadcast(packet) || is_ethernet_broadcast(packet))
|
|
dest_ip = INADDR_BROADCAST;
|
|
else
|
|
return eMultiErr;
|
|
|
|
#if MONITOR
|
|
bug("Sending Ethernet packet:\n");
|
|
for (int i=0; i<len; i++) {
|
|
bug("%02x ", packet[i]);
|
|
}
|
|
bug("\n");
|
|
#endif
|
|
|
|
// Send packet
|
|
struct sockaddr_in sa;
|
|
sa.sin_family = AF_INET;
|
|
sa.sin_addr.s_addr = htonl(dest_ip);
|
|
sa.sin_port = htons(udp_port);
|
|
if (sendto(udp_socket, packet, len, 0, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
|
|
D(bug("WARNING: Couldn't transmit packet\n"));
|
|
return excessCollsns;
|
|
}
|
|
} else
|
|
#endif
|
|
return ether_write(wds);
|
|
}
|
|
return noErr;
|
|
}
|
|
|
|
case kENetGetInfo: { // Get device information/statistics
|
|
D(bug(" GetInfo buf %08x, size %d\n", ReadMacInt32(pb + ePointer), ReadMacInt16(pb + eBuffSize)));
|
|
|
|
// Collect info (only ethernet address)
|
|
uint8 buf[18];
|
|
memset(buf, 0, 18);
|
|
memcpy(buf, ether_addr, 6);
|
|
|
|
// Transfer info to supplied buffer
|
|
int16 size = ReadMacInt16(pb + eBuffSize);
|
|
if (size > 18)
|
|
size = 18;
|
|
WriteMacInt16(pb + eDataSize, size); // Number of bytes actually written
|
|
Host2Mac_memcpy(ReadMacInt32(pb + ePointer), buf, size);
|
|
return noErr;
|
|
}
|
|
|
|
case kENetSetGeneral: // Set general mode (always in general mode)
|
|
D(bug(" SetGeneral\n"));
|
|
return noErr;
|
|
|
|
default:
|
|
printf("WARNING: Unknown EtherControl(%d)\n", code);
|
|
return controlErr;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Ethernet ReadPacket routine
|
|
*/
|
|
|
|
void EtherReadPacket(uint32 &src, uint32 &dest, uint32 &len, uint32 &remaining)
|
|
{
|
|
D(bug("EtherReadPacket src %08x, dest %08x, len %08x, remaining %08x\n", src, dest, len, remaining));
|
|
uint32 todo = len > remaining ? remaining : len;
|
|
Mac2Mac_memcpy(dest, src, todo);
|
|
src += todo;
|
|
dest += todo;
|
|
len -= todo;
|
|
remaining -= todo;
|
|
}
|
|
|
|
|
|
#if SUPPORTS_UDP_TUNNEL
|
|
/*
|
|
* Read packet from UDP socket
|
|
*/
|
|
|
|
void ether_udp_read(uint32 packet, int length, struct sockaddr_in *from)
|
|
{
|
|
// Drop packets sent by us
|
|
if (memcmp(Mac2HostAddr(packet) + 6, ether_addr, 6) == 0)
|
|
return;
|
|
|
|
#if MONITOR
|
|
bug("Receiving Ethernet packet:\n");
|
|
for (int i=0; i<length; i++) {
|
|
bug("%02x ", ReadMacInt8(packet + i));
|
|
}
|
|
bug("\n");
|
|
#endif
|
|
|
|
// Get packet type
|
|
uint16 type = ReadMacInt16(packet + 12);
|
|
|
|
// Look for protocol
|
|
uint16 search_type = (type <= 1500 ? 0 : type);
|
|
if (udp_protocols.find(search_type) == udp_protocols.end())
|
|
return;
|
|
uint32 handler = udp_protocols[search_type];
|
|
if (handler == 0)
|
|
return;
|
|
|
|
// Copy header to RHA
|
|
Mac2Mac_memcpy(ether_data + ed_RHA, packet, 14);
|
|
D(bug(" header %08x%04x %08x%04x %04x\n", ReadMacInt32(ether_data + ed_RHA), ReadMacInt16(ether_data + ed_RHA + 4), ReadMacInt32(ether_data + ed_RHA + 6), ReadMacInt16(ether_data + ed_RHA + 10), ReadMacInt16(ether_data + ed_RHA + 12)));
|
|
|
|
// Call protocol handler
|
|
M68kRegisters r;
|
|
r.d[0] = type; // Packet type
|
|
r.d[1] = length - 14; // Remaining packet length (without header, for ReadPacket)
|
|
r.a[0] = packet + 14; // Pointer to packet (Mac address, for ReadPacket)
|
|
r.a[3] = ether_data + ed_RHA + 14; // Pointer behind header in RHA
|
|
r.a[4] = ether_data + ed_ReadPacket; // Pointer to ReadPacket/ReadRest routines
|
|
D(bug(" calling protocol handler %08x, type %08x, length %08x, data %08x, rha %08x, read_packet %08x\n", handler, r.d[0], r.d[1], r.a[0], r.a[3], r.a[4]));
|
|
Execute68k(handler, &r);
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Ethernet packet allocator
|
|
*/
|
|
|
|
#if SIZEOF_VOID_P != 4 || REAL_ADDRESSING == 0
|
|
static uint32 ether_packet = 0; // Ethernet packet (cached allocation)
|
|
static uint32 n_ether_packets = 0; // Number of ethernet packets allocated so far (should be at most 1)
|
|
|
|
EthernetPacket::EthernetPacket()
|
|
{
|
|
++n_ether_packets;
|
|
if (ether_packet && n_ether_packets == 1)
|
|
packet = ether_packet;
|
|
else {
|
|
M68kRegisters r;
|
|
r.d[0] = 1516;
|
|
Execute68kTrap(0xa71e, &r); // NewPtrSysClear()
|
|
assert(r.a[0] != 0);
|
|
packet = r.a[0];
|
|
if (ether_packet == 0)
|
|
ether_packet = packet;
|
|
}
|
|
}
|
|
|
|
EthernetPacket::~EthernetPacket()
|
|
{
|
|
--n_ether_packets;
|
|
if (packet != ether_packet) {
|
|
M68kRegisters r;
|
|
r.a[0] = packet;
|
|
Execute68kTrap(0xa01f, &r); // DisposePtr
|
|
}
|
|
if (n_ether_packets > 0) {
|
|
bug("WARNING: Nested allocation of ethernet packets!\n");
|
|
}
|
|
}
|
|
#endif
|