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/* |
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* ether.cpp - Ethernet device driver |
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* |
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* Basilisk II (C) 1997-1999 Christian Bauer |
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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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* Inside AppleTalk, chapter 3 "Ethernet and TokenTalk Link Access Protocols" |
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*/ |
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#include "sysdeps.h" |
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|
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#include <string.h> |
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#include <map> |
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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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#include <sys/ioctl.h> |
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#include <netdb.h> |
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#include <errno.h> |
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#endif |
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|
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#include "sysdeps.h" |
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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 "emul_op.h" |
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#include "prefs.h" |
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#include "ether.h" |
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#include "ether_defs.h" |
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|
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#ifndef NO_STD_NAMESPACE |
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using std::map; |
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#endif |
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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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uint8 ether_addr[6]; // Ethernet address (set by EtherInit()) |
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bool net_open = false; // Flag: initialization succeeded, network device open (set by EtherInit()) |
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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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|
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static bool udp_tunnel = false; // Flag: tunnelling AppleTalk over UDP using BSD socket API |
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static uint16 udp_port; |
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static int udp_socket = -1; |
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|
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// Mac address of driver data in MacOS RAM |
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uint32 ether_data = 0; |
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|
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// Attached network protocols for UDP tunneling, maps protocol type to MacOS handler address |
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static map<uint16, uint32> udp_protocols; |
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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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void EtherInit(void) |
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{ |
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net_open = false; |
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udp_tunnel = false; |
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|
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#if SUPPORTS_UDP_TUNNEL |
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// UDP tunnelling requested? |
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if (PrefsFindBool("udptunnel")) { |
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udp_tunnel = true; |
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udp_port = PrefsFindInt32("udpport"); |
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|
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// Open UDP socket |
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udp_socket = socket(PF_INET, SOCK_DGRAM, 0); |
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if (udp_socket < 0) { |
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perror("socket"); |
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return; |
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} |
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|
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// Bind to specified address and port |
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struct sockaddr_in sa; |
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memset(&sa, 0, sizeof(sa)); |
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sa.sin_family = AF_INET; |
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sa.sin_addr.s_addr = INADDR_ANY; |
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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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udp_socket = -1; |
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return; |
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} |
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|
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// Retrieve local IP address (or at least one of them) |
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socklen_t sa_len = sizeof(sa); |
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getsockname(udp_socket, (struct sockaddr *)&sa, &sa_len); |
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uint32 udp_ip = sa.sin_addr.s_addr; |
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if (udp_ip == INADDR_ANY || udp_ip == INADDR_LOOPBACK) { |
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char name[256]; |
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gethostname(name, sizeof(name)); |
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struct hostent *local = gethostbyname(name); |
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if (local) |
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udp_ip = *(uint32 *)local->h_addr_list[0]; |
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} |
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udp_ip = ntohl(udp_ip); |
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|
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// Construct dummy Ethernet address from local IP address |
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ether_addr[0] = 'B'; |
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ether_addr[1] = '2'; |
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ether_addr[2] = udp_ip >> 24; |
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ether_addr[3] = udp_ip >> 16; |
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ether_addr[4] = udp_ip >> 8; |
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ether_addr[5] = udp_ip; |
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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])); |
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|
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// Set socket options |
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int on = 1; |
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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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|
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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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udp_socket = -1; |
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return; |
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} |
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|
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net_open = true; |
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} else |
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#endif |
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if (ether_init()) |
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net_open = 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 EtherExit(void) |
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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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if (udp_socket >= 0) { |
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ether_stop_udp_thread(); |
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close(udp_socket); |
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udp_socket = -1; |
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} |
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} else |
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#endif |
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ether_exit(); |
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net_open = false; |
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} |
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} |
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|
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|
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uint32 ether_data = 0; // Mac address of driver data in MacOS RAM |
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/* |
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* Reset |
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*/ |
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|
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void EtherReset(void) |
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{ |
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udp_protocols.clear(); |
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ether_reset(); |
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} |
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|
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|
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/* |
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* Check whether Ethernet address is AppleTalk broadcast address |
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*/ |
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|
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static inline bool is_apple_talk_broadcast(uint8 *p) |
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{ |
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return p[0] == 0x09 && p[1] == 0x00 && p[2] == 0x07 |
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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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if (r.a[0] == 0) |
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return openErr; |
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ether_data = r.a[0]; |
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D(bug(" data %08lx\n", ether_data)); |
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D(bug(" data %08x\n", ether_data)); |
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|
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WriteMacInt16(ether_data + ed_DeferredTask + qType, dtQType); |
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WriteMacInt32(ether_data + ed_DeferredTask + dtAddr, ether_data + ed_Code); |
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uint16 code = ReadMacInt16(pb + csCode); |
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D(bug("EtherControl %d\n", code)); |
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switch (code) { |
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case 1: // KillIO |
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case 1: // KillIO |
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return -1; |
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|
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case kENetAddMulti: // Add multicast address |
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D(bug("AddMulti %08lx%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4))); |
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if (net_open) |
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D(bug(" AddMulti %08x%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4))); |
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if (net_open && !udp_tunnel) |
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return ether_add_multicast(pb); |
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else |
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return noErr; |
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return noErr; |
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|
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case kENetDelMulti: // Delete multicast address |
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D(bug("DelMulti %08lx%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4))); |
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if (net_open) |
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D(bug(" DelMulti %08x%04x\n", ReadMacInt32(pb + eMultiAddr), ReadMacInt16(pb + eMultiAddr + 4))); |
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if (net_open && !udp_tunnel) |
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return ether_del_multicast(pb); |
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else |
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return noErr; |
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return noErr; |
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|
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case kENetAttachPH: { // Attach protocol handler |
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uint16 type = ReadMacInt16(pb + eProtType); |
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uint32 handler = ReadMacInt32(pb + ePointer); |
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D(bug(" AttachPH prot %04x, handler %08x\n", type, handler)); |
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if (net_open) { |
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if (udp_tunnel) { |
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if (udp_protocols.find(type) != udp_protocols.end()) |
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return lapProtErr; |
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udp_protocols[type] = handler; |
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} else |
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return ether_attach_ph(type, handler); |
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} |
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return noErr; |
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} |
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|
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case kENetAttachPH: // Attach protocol handler |
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D(bug("AttachPH prot %04x, handler %08lx\n", ReadMacInt16(pb + eProtType), ReadMacInt32(pb + ePointer))); |
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if (net_open) |
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return ether_attach_ph(ReadMacInt16(pb + eProtType), ReadMacInt32(pb + ePointer)); |
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else |
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return noErr; |
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|
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case kENetDetachPH: // Detach protocol handler |
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D(bug("DetachPH prot %04x\n", ReadMacInt16(pb + eProtType))); |
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if (net_open) |
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return ether_detach_ph(ReadMacInt16(pb + eProtType)); |
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else |
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return noErr; |
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|
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case kENetWrite: // Transmit raw Ethernet packet |
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D(bug("EtherWrite\n")); |
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if (ReadMacInt16(ReadMacInt32(pb + ePointer)) < 14) |
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case kENetDetachPH: { // Detach protocol handler |
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uint16 type = ReadMacInt16(pb + eProtType); |
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D(bug(" DetachPH prot %04x\n", type)); |
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if (net_open) { |
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if (udp_tunnel) { |
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if (udp_protocols.erase(type) == 0) |
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return lapProtErr; |
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} else |
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return ether_detach_ph(type); |
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} |
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return noErr; |
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} |
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|
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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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if (ReadMacInt16(wds) < 14) |
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return eLenErr; // Header incomplete |
296 |
< |
if (net_open) |
297 |
< |
return ether_write(ReadMacInt32(pb + ePointer)); |
298 |
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else |
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return noErr; |
296 |
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if (net_open) { |
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#if SUPPORTS_UDP_TUNNEL |
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if (udp_tunnel) { |
299 |
> |
|
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// Copy packet to buffer |
301 |
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uint8 packet[1514]; |
302 |
> |
int len = ether_wds_to_buffer(wds, packet); |
303 |
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|
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// Set source address and extract destination address |
305 |
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memcpy(packet + 6, ether_addr, 6); |
306 |
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uint32 dest_ip; |
307 |
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if (packet[0] == 'B' && packet[1] == '2') |
308 |
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dest_ip = (packet[2] << 24) | (packet[3] << 16) | (packet[4] << 8) | packet[5]; |
309 |
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else if (is_apple_talk_broadcast(packet)) |
310 |
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dest_ip = INADDR_BROADCAST; |
311 |
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else |
312 |
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return eMultiErr; |
313 |
> |
|
314 |
> |
#if MONITOR |
315 |
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bug("Sending Ethernet packet:\n"); |
316 |
> |
for (int i=0; i<len; i++) { |
317 |
> |
bug("%02x ", packet[i]); |
318 |
> |
} |
319 |
> |
bug("\n"); |
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#endif |
321 |
> |
|
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> |
// Send packet |
323 |
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struct sockaddr_in sa; |
324 |
> |
sa.sin_family = AF_INET; |
325 |
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sa.sin_addr.s_addr = htonl(dest_ip); |
326 |
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sa.sin_port = htons(udp_port); |
327 |
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if (sendto(udp_socket, packet, len, 0, (struct sockaddr *)&sa, sizeof(sa)) < 0) { |
328 |
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D(bug("WARNING: Couldn't transmit packet\n")); |
329 |
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return excessCollsns; |
330 |
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} |
331 |
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} else |
332 |
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#endif |
333 |
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return ether_write(wds); |
334 |
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} |
335 |
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return noErr; |
336 |
> |
} |
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|
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case kENetGetInfo: { // Get device information/statistics |
339 |
< |
D(bug("GetInfo buf %08lx, size %d\n", ReadMacInt32(pb + ePointer), ReadMacInt16(pb + eBuffSize))); |
339 |
> |
D(bug(" GetInfo buf %08x, size %d\n", ReadMacInt32(pb + ePointer), ReadMacInt16(pb + eBuffSize))); |
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|
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// Collect info (only ethernet address) |
342 |
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uint8 buf[18]; |
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if (size > 18) |
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size = 18; |
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WriteMacInt16(pb + eDataSize, size); // Number of bytes actually written |
351 |
< |
memcpy(Mac2HostAddr(ReadMacInt32(pb + ePointer)), buf, size); |
351 |
> |
Host2Mac_memcpy(ReadMacInt32(pb + ePointer), buf, size); |
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return noErr; |
353 |
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} |
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|
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case kENetSetGeneral: // Set general mode (always in general mode) |
356 |
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D(bug("SetGeneral\n")); |
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> |
D(bug(" SetGeneral\n")); |
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return noErr; |
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|
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default: |
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|
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void EtherReadPacket(uint8 **src, uint32 &dest, uint32 &len, uint32 &remaining) |
371 |
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{ |
372 |
< |
D(bug("EtherReadPacket src %08lx, dest %08lx, len %08lx, remaining %08lx\n", *src, dest, len, remaining)); |
372 |
> |
D(bug("EtherReadPacket src %p, dest %08x, len %08x, remaining %08x\n", *src, dest, len, remaining)); |
373 |
|
uint32 todo = len > remaining ? remaining : len; |
374 |
< |
memcpy(Mac2HostAddr(dest), *src, todo); |
374 |
> |
Host2Mac_memcpy(dest, *src, todo); |
375 |
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*src += todo; |
376 |
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dest += todo; |
377 |
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len -= todo; |
378 |
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remaining -= todo; |
379 |
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} |
380 |
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|
381 |
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|
382 |
+ |
#if SUPPORTS_UDP_TUNNEL |
383 |
+ |
/* |
384 |
+ |
* Read packet from UDP socket |
385 |
+ |
*/ |
386 |
+ |
|
387 |
+ |
void ether_udp_read(uint8 *packet, int length, struct sockaddr_in *from) |
388 |
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{ |
389 |
+ |
// Drop packets sent by us |
390 |
+ |
if (memcmp(packet + 6, ether_addr, 6) == 0) |
391 |
+ |
return; |
392 |
+ |
|
393 |
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#if MONITOR |
394 |
+ |
bug("Receiving Ethernet packet:\n"); |
395 |
+ |
for (int i=0; i<length; i++) { |
396 |
+ |
bug("%02x ", packet[i]); |
397 |
+ |
} |
398 |
+ |
bug("\n"); |
399 |
+ |
#endif |
400 |
+ |
|
401 |
+ |
// Get packet type |
402 |
+ |
uint16 type = (packet[12] << 8) | packet[13]; |
403 |
+ |
|
404 |
+ |
// Look for protocol |
405 |
+ |
uint16 search_type = (type <= 1500 ? 0 : type); |
406 |
+ |
if (udp_protocols.find(search_type) == udp_protocols.end()) |
407 |
+ |
return; |
408 |
+ |
uint32 handler = udp_protocols[search_type]; |
409 |
+ |
if (handler == 0) |
410 |
+ |
return; |
411 |
+ |
|
412 |
+ |
// Copy header to RHA |
413 |
+ |
Host2Mac_memcpy(ether_data + ed_RHA, packet, 14); |
414 |
+ |
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))); |
415 |
+ |
|
416 |
+ |
// Call protocol handler |
417 |
+ |
M68kRegisters r; |
418 |
+ |
r.d[0] = type; // Packet type |
419 |
+ |
r.d[1] = length - 14; // Remaining packet length (without header, for ReadPacket) |
420 |
+ |
r.a[0] = (uint32)packet + 14; // Pointer to packet (host address, for ReadPacket) |
421 |
+ |
r.a[3] = ether_data + ed_RHA + 14; // Pointer behind header in RHA |
422 |
+ |
r.a[4] = ether_data + ed_ReadPacket; // Pointer to ReadPacket/ReadRest routines |
423 |
+ |
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])); |
424 |
+ |
Execute68k(handler, &r); |
425 |
+ |
} |
426 |
+ |
#endif |