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, 4 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)
#	Content
1	/*
2	* ether_dummy.cpp - Ethernet device driver, dummy implementation
3	*
4	* Basilisk II (C) 1997-2001 Christian Bauer
5	*
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
23	#if SUPPORTS_UDP_TUNNEL
24	#include <netinet/in.h>
25	#include <sys/socket.h>
26	#endif
27
28	#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	// 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	/*
50	* Initialization
51	*/
52
53	bool ether_init(void)
54	{
55	}
56
57
58	/*
59	* Deinitialization
60	*/
61
62	void ether_exit(void)
63	{
64	}
65
66
67	/*
68	* Reset
69	*/
70
71	void ether_reset(void)
72	{
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	* 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	* Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers
159	*/
160
161	void EtherInterrupt(void)
162	{
163	#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	}