src/dummy/ether_dummy.cpp

/*
 *  ether_dummy.cpp - Ethernet device driver, dummy implementation
 *
 *  Basilisk II (C) 1997-2001 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
 */

#include "sysdeps.h"

#if SUPPORTS_UDP_TUNNEL
#include <netinet/in.h>
#include <sys/socket.h>
#endif

#include "cpu_emulation.h"
#include "main.h"
#include "macos_util.h"
#include "prefs.h"
#include "user_strings.h"
#include "ether.h"
#include "ether_defs.h"

#define DEBUG 0
#include "debug.h"

#define MONITOR 0


// Global variables
#if SUPPORTS_UDP_TUNNEL
static int fd = -1;                                             // UDP tunnel socket fd
static bool udp_tunnel_active = false;
#endif


/*
 *  Initialization
 */

bool ether_init(void)
{
}


/*
 *  Deinitialization
 */

void ether_exit(void)
{
}


/*
 *  Reset
 */

void ether_reset(void)
{
}


/*
 *  Add multicast address
 */

int16 ether_add_multicast(uint32 pb)
{
        return noErr;
}


/*
 *  Delete multicast address
 */

int16 ether_del_multicast(uint32 pb)
{
        return noErr;
}


/*
 *  Attach protocol handler
 */

int16 ether_attach_ph(uint16 type, uint32 handler)
{
        return noErr;
}


/*
 *  Detach protocol handler
 */

int16 ether_detach_ph(uint16 type)
{
        return noErr;
}


/*
 *  Transmit raw ethernet packet
 */

int16 ether_write(uint32 wds)
{
        // Set source address
        uint32 hdr = ReadMacInt32(wds + 2);
        memcpy(Mac2HostAddr(hdr + 6), ether_addr, 6);
        return noErr;
}


/*
 *  Start UDP packet reception thread
 */

bool ether_start_udp_thread(int socket_fd)
{
#if SUPPORTS_UDP_TUNNEL
        fd = socket_fd;
        udp_tunnel_active = true;
        return true;
#else
        return false;
#endif
}


/*
 *  Stop UDP packet reception thread
 */

void ether_stop_udp_thread(void)
{
#if SUPPORTS_UDP_TUNNEL
        udp_tunnel_active = false;
#endif
}


/*
 *  Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers
 */

void EtherInterrupt(void)
{
#if SUPPORTS_UDP_TUNNEL
        if (udp_tunnel_active) {
                uint8 packet[1514];
                ssize_t length;

                // Read packets from socket and hand to ether_udp_read() for processing
                while (true) {
                        struct sockaddr_in from;
                        socklen_t from_len = sizeof(from);
                        length = recvfrom(fd, packet, 1514, 0, (struct sockaddr *)&from, &from_len);
                        if (length < 14)
                                break;
                        ether_udp_read(packet, length, &from);
                }
        }
#endif
}
Revision:	1.5
Committed:	2001-07-14T20:01:20Z (23 years, 2 months ago) by cebix
Branch:	MAIN
Changes since 1.4:	+57 -0 lines
Log Message:	- disk.cpp looks for HFS partition info in the disk image; this makes it possible to, for example, use MacOS-partitioned hard disks and removable media under B2/Unix even if the OS doesn't understand Mac partition maps by specifying the appropriate block device name as a Mac volume - fixed typo in audio_dummy.cpp - added minimally required UDP tunneling code to ether_dummy.cpp - main_unix.cpp: if pthreads are not supported, we trigger the Ethernet interrupt in the 60Hz ticker; this makes UDP tunneling work under NetBSD/m68k (as the only form of networking)
#	User	Rev	Content
1	cebix	1.1	/*
2			* ether_dummy.cpp - Ethernet device driver, dummy implementation
3			*
4	cebix	1.3	* Basilisk II (C) 1997-2001 Christian Bauer
5	cebix	1.1	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19			*/
20
21			#include "sysdeps.h"
22	cebix	1.5
23			#if SUPPORTS_UDP_TUNNEL
24			#include <netinet/in.h>
25			#include <sys/socket.h>
26			#endif
27
28	cebix	1.1	#include "cpu_emulation.h"
29			#include "main.h"
30			#include "macos_util.h"
31			#include "prefs.h"
32			#include "user_strings.h"
33			#include "ether.h"
34			#include "ether_defs.h"
35
36			#define DEBUG 0
37			#include "debug.h"
38
39			#define MONITOR 0
40
41
42	cebix	1.5	// Global variables
43			#if SUPPORTS_UDP_TUNNEL
44			static int fd = -1; // UDP tunnel socket fd
45			static bool udp_tunnel_active = false;
46			#endif
47
48
49	cebix	1.1	/*
50			* Initialization
51			*/
52
53	cebix	1.4	bool ether_init(void)
54	cebix	1.1	{
55			}
56
57
58			/*
59			* Deinitialization
60			*/
61
62	cebix	1.4	void ether_exit(void)
63	cebix	1.1	{
64			}
65
66
67			/*
68			* Reset
69			*/
70
71	cebix	1.4	void ether_reset(void)
72	cebix	1.1	{
73			}
74
75
76			/*
77			* Add multicast address
78			*/
79
80			int16 ether_add_multicast(uint32 pb)
81			{
82			return noErr;
83			}
84
85
86			/*
87			* Delete multicast address
88			*/
89
90			int16 ether_del_multicast(uint32 pb)
91			{
92			return noErr;
93			}
94
95
96			/*
97			* Attach protocol handler
98			*/
99
100			int16 ether_attach_ph(uint16 type, uint32 handler)
101			{
102			return noErr;
103			}
104
105
106			/*
107			* Detach protocol handler
108			*/
109
110			int16 ether_detach_ph(uint16 type)
111			{
112			return noErr;
113			}
114
115
116			/*
117			* Transmit raw ethernet packet
118			*/
119
120			int16 ether_write(uint32 wds)
121			{
122			// Set source address
123			uint32 hdr = ReadMacInt32(wds + 2);
124			memcpy(Mac2HostAddr(hdr + 6), ether_addr, 6);
125			return noErr;
126			}
127
128
129			/*
130	cebix	1.5	* Start UDP packet reception thread
131			*/
132
133			bool ether_start_udp_thread(int socket_fd)
134			{
135			#if SUPPORTS_UDP_TUNNEL
136			fd = socket_fd;
137			udp_tunnel_active = true;
138			return true;
139			#else
140			return false;
141			#endif
142			}
143
144
145			/*
146			* Stop UDP packet reception thread
147			*/
148
149			void ether_stop_udp_thread(void)
150			{
151			#if SUPPORTS_UDP_TUNNEL
152			udp_tunnel_active = false;
153			#endif
154			}
155
156
157			/*
158	cebix	1.1	* Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers
159			*/
160
161			void EtherInterrupt(void)
162			{
163	cebix	1.5	#if SUPPORTS_UDP_TUNNEL
164			if (udp_tunnel_active) {
165			uint8 packet[1514];
166			ssize_t length;
167
168			// Read packets from socket and hand to ether_udp_read() for processing
169			while (true) {
170			struct sockaddr_in from;
171			socklen_t from_len = sizeof(from);
172			length = recvfrom(fd, packet, 1514, 0, (struct sockaddr *)&from, &from_len);
173			if (length < 14)
174			break;
175			ether_udp_read(packet, length, &from);
176			}
177			}
178			#endif
179	cebix	1.1	}