mirror of
https://github.com/kanjitalk755/macemu.git
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182 lines
2.9 KiB
C++
182 lines
2.9 KiB
C++
/*
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* ether_dummy.cpp - Ethernet device driver, dummy implementation
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*
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* Basilisk II (C) 1997-2008 Christian Bauer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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#include "sysdeps.h"
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#if SUPPORTS_UDP_TUNNEL
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#include <netinet/in.h>
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#include <sys/socket.h>
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#endif
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#include "cpu_emulation.h"
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#include "main.h"
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#include "macos_util.h"
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#include "prefs.h"
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#include "user_strings.h"
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#include "ether.h"
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#include "ether_defs.h"
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#define DEBUG 0
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#include "debug.h"
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#define MONITOR 0
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// Global variables
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#if SUPPORTS_UDP_TUNNEL
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static int fd = -1; // UDP tunnel socket fd
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static bool udp_tunnel_active = false;
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#endif
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/*
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* Initialization
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*/
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bool ether_init(void)
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{
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return true;
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}
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/*
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* Deinitialization
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*/
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void ether_exit(void)
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{
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}
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/*
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* Reset
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*/
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void ether_reset(void)
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{
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}
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/*
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* Add multicast address
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*/
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int16 ether_add_multicast(uint32 pb)
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{
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return noErr;
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}
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/*
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* Delete multicast address
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*/
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int16 ether_del_multicast(uint32 pb)
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{
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return noErr;
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}
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/*
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* Attach protocol handler
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*/
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int16 ether_attach_ph(uint16 type, uint32 handler)
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{
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return noErr;
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}
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/*
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* Detach protocol handler
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*/
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int16 ether_detach_ph(uint16 type)
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{
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return noErr;
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}
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/*
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* Transmit raw ethernet packet
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*/
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int16 ether_write(uint32 wds)
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{
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// Set source address
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uint32 hdr = ReadMacInt32(wds + 2);
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memcpy(Mac2HostAddr(hdr + 6), ether_addr, 6);
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return noErr;
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}
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/*
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* Start UDP packet reception thread
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*/
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bool ether_start_udp_thread(int socket_fd)
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{
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#if SUPPORTS_UDP_TUNNEL
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fd = socket_fd;
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udp_tunnel_active = true;
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return true;
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#else
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return false;
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#endif
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}
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/*
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* Stop UDP packet reception thread
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*/
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void ether_stop_udp_thread(void)
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{
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#if SUPPORTS_UDP_TUNNEL
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udp_tunnel_active = false;
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#endif
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}
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/*
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* Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers
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*/
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void EtherInterrupt(void)
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{
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#if SUPPORTS_UDP_TUNNEL
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if (udp_tunnel_active) {
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EthernetPacket ether_packet;
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uint32 packet = ether_packet.addr();
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ssize_t length;
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// Read packets from socket and hand to ether_udp_read() for processing
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while (true) {
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struct sockaddr_in from;
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socklen_t from_len = sizeof(from);
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length = recvfrom(fd, Mac2HostAddr(packet), 1514, 0, (struct sockaddr *)&from, &from_len);
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if (length < 14)
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break;
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ether_udp_read(packet, length, &from);
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}
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}
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#endif
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}
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