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/* |
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* ether_dummy.cpp - Ethernet device driver, dummy implementation |
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* |
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* Basilisk II (C) 1997-2001 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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|
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#include "sysdeps.h" |
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|
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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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|
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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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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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#define MONITOR 0 |
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|
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|
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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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|
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/* |
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* Initialization |
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*/ |
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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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|
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/* |
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* Deinitialization |
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*/ |
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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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|
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/* |
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* Reset |
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*/ |
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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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|
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/* |
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* Add multicast address |
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*/ |
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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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|
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/* |
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* Delete multicast address |
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*/ |
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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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|
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/* |
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* Attach protocol handler |
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*/ |
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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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|
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/* |
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* Detach protocol handler |
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*/ |
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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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|
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/* |
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* Transmit raw ethernet packet |
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*/ |
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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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|
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/* |
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* Start UDP packet reception thread |
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*/ |
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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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|
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/* |
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* Stop UDP packet reception thread |
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*/ |
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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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|
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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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|
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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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uint8 packet[1514]; |
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ssize_t length; |
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|
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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, 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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} |
