src/dummy/ether_dummy.cpp

/*
 *  ether_dummy.cpp - Ethernet device driver, dummy implementation
 *
 *  Basilisk II (C) 1997-2002 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)
{
        return true;
}


/*
 *  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:	1.7
Committed:	2002-01-15T14:58:41Z (22 years, 10 months ago) by cebix
Branch:	MAIN
CVS Tags:	nigel-build-12, nigel-build-13, snapshot-15012002
Changes since 1.6:	+1 -1 lines
Log Message:	- documentation updates - 2001 -> 2002 - version 0.9 -> 1.0
#	User	Rev	Content
1	cebix	1.1	/*
2			* ether_dummy.cpp - Ethernet device driver, dummy implementation
3			*
4	cebix	1.7	* Basilisk II (C) 1997-2002 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	cebix	1.6	return true;
56	cebix	1.1	}
57
58
59			/*
60			* Deinitialization
61			*/
62
63	cebix	1.4	void ether_exit(void)
64	cebix	1.1	{
65			}
66
67
68			/*
69			* Reset
70			*/
71
72	cebix	1.4	void ether_reset(void)
73	cebix	1.1	{
74			}
75
76
77			/*
78			* Add multicast address
79			*/
80
81			int16 ether_add_multicast(uint32 pb)
82			{
83			return noErr;
84			}
85
86
87			/*
88			* Delete multicast address
89			*/
90
91			int16 ether_del_multicast(uint32 pb)
92			{
93			return noErr;
94			}
95
96
97			/*
98			* Attach protocol handler
99			*/
100
101			int16 ether_attach_ph(uint16 type, uint32 handler)
102			{
103			return noErr;
104			}
105
106
107			/*
108			* Detach protocol handler
109			*/
110
111			int16 ether_detach_ph(uint16 type)
112			{
113			return noErr;
114			}
115
116
117			/*
118			* Transmit raw ethernet packet
119			*/
120
121			int16 ether_write(uint32 wds)
122			{
123			// Set source address
124			uint32 hdr = ReadMacInt32(wds + 2);
125			memcpy(Mac2HostAddr(hdr + 6), ether_addr, 6);
126			return noErr;
127			}
128
129
130			/*
131	cebix	1.5	* Start UDP packet reception thread
132			*/
133
134			bool ether_start_udp_thread(int socket_fd)
135			{
136			#if SUPPORTS_UDP_TUNNEL
137			fd = socket_fd;
138			udp_tunnel_active = true;
139			return true;
140			#else
141			return false;
142			#endif
143			}
144
145
146			/*
147			* Stop UDP packet reception thread
148			*/
149
150			void ether_stop_udp_thread(void)
151			{
152			#if SUPPORTS_UDP_TUNNEL
153			udp_tunnel_active = false;
154			#endif
155			}
156
157
158			/*
159	cebix	1.1	* Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers
160			*/
161
162			void EtherInterrupt(void)
163			{
164	cebix	1.5	#if SUPPORTS_UDP_TUNNEL
165			if (udp_tunnel_active) {
166			uint8 packet[1514];
167			ssize_t length;
168
169			// Read packets from socket and hand to ether_udp_read() for processing
170			while (true) {
171			struct sockaddr_in from;
172			socklen_t from_len = sizeof(from);
173			length = recvfrom(fd, packet, 1514, 0, (struct sockaddr *)&from, &from_len);
174			if (length < 14)
175			break;
176			ether_udp_read(packet, length, &from);
177			}
178			}
179			#endif
180	cebix	1.1	}