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/* |
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* ether.cpp - Ethernet device driver |
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* |
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* Basilisk II (C) 1997-2001 Christian Bauer |
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* Basilisk II (C) 1997-2002 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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#define MONITOR 0 |
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|
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#ifdef __BEOS__ |
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#define CLOSESOCKET closesocket |
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#else |
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#define CLOSESOCKET close |
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#endif |
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|
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|
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// Global variables |
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uint8 ether_addr[6]; // Ethernet address (set by ether_init()) |
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static bool net_open = false; // Flag: initialization succeeded, network device open (set by EtherInit()) |
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sa.sin_port = htons(udp_port); |
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if (bind(udp_socket, (struct sockaddr *)&sa, sizeof(sa)) < 0) { |
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perror("bind"); |
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close(udp_socket); |
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CLOSESOCKET(udp_socket); |
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udp_socket = -1; |
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return; |
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} |
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// Set socket options |
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int on = 1; |
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#ifdef __BEOS__ |
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setsockopt(udp_socket, SOL_SOCKET, SO_NONBLOCK, &on, sizeof(on)); |
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#else |
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setsockopt(udp_socket, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on)); |
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ioctl(udp_socket, FIONBIO, &on); |
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#endif |
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// Start thread for packet reception |
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if (!ether_start_udp_thread(udp_socket)) { |
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close(udp_socket); |
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CLOSESOCKET(udp_socket); |
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udp_socket = -1; |
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return; |
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} |
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if (udp_tunnel) { |
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if (udp_socket >= 0) { |
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ether_stop_udp_thread(); |
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close(udp_socket); |
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CLOSESOCKET(udp_socket); |
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udp_socket = -1; |
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} |
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} else |
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/* |
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* Check whether Ethernet address is AppleTalk broadcast address |
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* Check whether Ethernet address is AppleTalk or Ethernet broadcast address |
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*/ |
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static inline bool is_apple_talk_broadcast(uint8 *p) |
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&& p[3] == 0xff && p[4] == 0xff && p[5] == 0xff; |
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} |
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static inline bool is_ethernet_broadcast(uint8 *p) |
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{ |
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return p[0] == 0xff && p[1] == 0xff && p[2] == 0xff |
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&& p[3] == 0xff && p[4] == 0xff && p[5] == 0xff; |
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} |
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/* |
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* Driver Open() routine |
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case kENetWrite: { // Transmit raw Ethernet packet |
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uint32 wds = ReadMacInt32(pb + ePointer); |
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D(bug(" EtherWrite\n")); |
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D(bug(" EtherWrite ")); |
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if (ReadMacInt16(wds) < 14) |
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return eLenErr; // Header incomplete |
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|
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// Set source address |
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uint32 hdr = ReadMacInt32(wds + 2); |
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Host2Mac_memcpy(hdr + 6, ether_addr, 6); |
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D(bug("to %08x%04x, type %04x\n", ReadMacInt32(hdr), ReadMacInt16(hdr + 4), ReadMacInt16(hdr + 12))); |
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|
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if (net_open) { |
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#if SUPPORTS_UDP_TUNNEL |
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if (udp_tunnel) { |
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uint8 packet[1514]; |
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int len = ether_wds_to_buffer(wds, packet); |
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// Set source address and extract destination address |
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memcpy(packet + 6, ether_addr, 6); |
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// Extract destination address |
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uint32 dest_ip; |
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if (packet[0] == 'B' && packet[1] == '2') |
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dest_ip = (packet[2] << 24) | (packet[3] << 16) | (packet[4] << 8) | packet[5]; |
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else if (is_apple_talk_broadcast(packet)) |
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else if (is_apple_talk_broadcast(packet) || is_ethernet_broadcast(packet)) |
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dest_ip = INADDR_BROADCAST; |
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else |
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return eMultiErr; |
