Networking with SIMH - Revision history

Vaxorcist: /* Setting the MAC address */ Link added

2022-07-09T08:02:32Z

‎Setting the MAC address: Link added

Vaxorcist: /* Setting the MAC address */ Link added

2022-07-09T07:54:05Z

‎Setting the MAC address: Link added

Vaxorcist: Three types of adapters and some links added

2022-07-09T07:40:14Z

Three types of adapters and some links added

Tor: Fix some minor typos and spelling.

2012-08-26T12:44:45Z

Fix some minor typos and spelling.

Newacct at 01:35, 6 February 2010

2010-02-06T01:35:17Z

Neozeed at 13:42, 18 August 2009

2009-08-18T13:42:54Z

Neozeed: fixes for win32 and for sending

2009-02-17T20:00:34Z

fixes for win32 and for sending

Neozeed: /* HECnet */

2009-02-16T04:43:25Z

‎HECnet

Neozeed: Add hecnet client code

2009-02-15T19:42:44Z

Add hecnet client code

Neozeed: /* Setting the MAC address */

2009-02-15T19:40:16Z

‎Setting the MAC address

@@ Line 37: / Line 37: @@
 </pre>
-=== Setting the MAC address ===
+=== Setting the MAC Address ===
-To set the [[MAC address]] to something other then the default (which is important if you ever plan on having more than one SIMH device talking to another, say in [[HECnet]]) you need to change the MAC address.  Remember this needs to be done before you attach the device.  The command is simple as all you have to do is type in something to the effect of:
+To set the [[MAC Address]] to something other then the default (which is important if you ever plan on having more than one SIMH device talking to another, say in [[HECnet]]) you need to change the MAC address.  Remember this needs to be done before you attach the device.  The command is simple as all you have to do is type in something to the effect of:
 <pre>

@@ Line 39: / Line 39: @@
 === Setting the MAC address ===
-To set the MAC address to something other then the default (which is important if you ever plan on having more than one SIMH device talking to another, say in [[HECnet]]) you need to change the MAC address.  Remember this needs to be done before you attach the device.  The command is simple as all you have to do is type in something to the effect of:
+To set the [[MAC address]] to something other then the default (which is important if you ever plan on having more than one SIMH device talking to another, say in [[HECnet]]) you need to change the MAC address.  Remember this needs to be done before you attach the device.  The command is simple as all you have to do is type in something to the effect of:
 <pre>

@@ Line 1: / Line 1: @@
-The aim of this quick tutorial is to show how to setup [[SIMH]]'s networking.
+The aim of this quick tutorial is to show how to setup [[SIMH]]'s networking with [[VAX]]en and [[PDP-11]]s.
@@ Line 5: / Line 5: @@
 By default [[SIMH]] supports networking via libpcap.  The restriction of this method is that the host machine is unable to communicate with the emulator.  Otherwise it's relatively straight forward.  First you need to make sure your binary has networking built in.
 === Showing host ethernet adapters ===

@@ Line 4: / Line 4: @@
 == libpcap ==
-By default [[SIMH]] supports networking via libpcap.  The restrction of this method is that the host machine is unable to communicate with the emulator.  Otherwise it's realitivly straight forward.  First you need to make sure your binary has networking built in.
+By default [[SIMH]] supports networking via libpcap.  The restriction of this method is that the host machine is unable to communicate with the emulator.  Otherwise it's relatively straight forward.  First you need to make sure your binary has networking built in.
 === Showing host ethernet adapters ===
@@ Line 32: / Line 32: @@
 === Setting the MAC address ===
-To set the MAC address to something other then the default (Which is important if you ever plan on having more then one SIMH device talking to another, say in [[HECnet]]) you need to change the MAC address.  Remember this needs to be done before you attach the device.  The command is simple as all you have to do is type in something to the effect of:
+To set the MAC address to something other then the default (which is important if you ever plan on having more than one SIMH device talking to another, say in [[HECnet]]) you need to change the MAC address.  Remember this needs to be done before you attach the device.  The command is simple as all you have to do is type in something to the effect of:
 <pre>
@@ Line 38: / Line 38: @@
 </pre>
-Remember the first half is the vendor code, and the second half is the unique identifier.  Do not use all 0's or all FF's it will create major issues on your network.
+Remember the first half is the vendor code, and the second half is the unique identifier.  Do not use all 0's or all FF's as it will create major issues on your network.
 === Attaching the device ===
-Once the host ethernet adapter to bind to has been identified, the MAC address has been configured, you can now attach the emulator to the host network card.  you can either specifiy the whole name as listed from the 'xq show dev' command, or use the corresponding number.  Thusly:
+Once the host ethernet adapter to bind to has been identified, the MAC address has been configured, you can now attach the emulator to the host network card.  You can either specifiy the whole name as listed from the 'xq show dev' command, or use the corresponding number.  Thusly:
 <pre>att xq eth2</pre>
@@ Line 203: / Line 203: @@
 First, I extracted, configure and built Qemu 0.9.0..  Next I copied the slirp directory into SIMH along with the various config headerfiles.  I built this on an i386, so I took the headers from i386-softmmu ... I'm not sure if it matters for Big Endian machines.
-Build the slirp directory with gcc and DO NOT USE ANY OPTIMIZATIONS... I think it's just a bunch of unallocated variables, but it with either not work correctly, or crash.  You can build the rest of SIMH with -O2.
+Build the slirp directory with gcc and DO NOT USE ANY OPTIMIZATIONS... I think it's just a bunch of unallocated variables, but it will either not work correctly, or crash.  You can build the rest of SIMH with -O2.
-Place this code in the 'non implemented' section of sim_ether.c and buil/link and it'll be good.  Just attach the ethernet to anything and it'll work.
+Place this code in the 'non implemented' section of sim_ether.c and build/link and it'll be good.  Just attach the ethernet to anything and it'll work.
+By default this listens on port 42323 on the host, and will send that TCP connection to port 23 to the SIMH VM, as long as that VM is configured as follows:
 <pre>
 IP 10.0.2.15
@@ Line 216: / Line 215: @@
 PRIMARY DNS 10.0.2.3
 </pre>
-The 'cool' thing is that this configuration will work ANYWHERE, as SLiRP can be thought as user mode NAT...
+The 'cool' thing is that this configuration will work ANYWHERE, as SLiRP can be thought of as user mode NAT...
 <pre>

@@ Line 476: / Line 476: @@
 		  memset(buffer,0x0,sizeof(buffer));
 		  read(FHpacketcount,buffer,sizeof(buffer));
-		  sscanf(buffer,"%d",&Packet);
+		  Packet=atoi(buffer);
 		  lseek(FHpacketcount,0,0);
+	  }

← Older revision		Revision as of 13:42, 18 August 2009
Line 588:		Line 588:


−	[[Category:Tutorials]] [[Category:Networking]]	+	[[Category:SIMH Tutorials]] [[Category:Networking]]

@@ Line 53: / Line 53: @@
 The following code snippet in sim_ether.c will allow [[SIMH]] to talk on a [[HECnet]] network.  For now the destination bridge & port are compiled in.  The following code however is weird in that the destination isn't initialized.. it needs.. fixing..
 <pre>
 struct sockaddr_in si_me, si_other;
 int s, i, slen;
 #define BUFLEN 1518
 t_stat eth_open(ETH_DEV* dev, char* name, DEVICE* dptr, uint32 dbit)
@@ Line 64: / Line 84: @@
 int32 fl;
 char parsename[255];
 char *pch;
 memset(&host,0x0,sizeof(host));
@@ Line 80: / Line 102: @@
 #if defined (_WIN32)
 wVersionRequested = MAKEWORD (1, 1);
 WSAStartup (wVersionRequested, &wsaData);
 #endif
-if ((s=socket(AF_INET, SOCK_DGRAM, 0))==-1)
+if ((s=socket(PF_INET, SOCK_DGRAM, 0))==-1)
-       printf("socket error\n");
+        printf("socket error\n");
 memset((char *) &si_me, 0, sizeof(si_me));
-si_me.sin_family = AF_INET;
+si_me.sin_family = PF_INET;
 si_me.sin_port = htons(atoi(port));
 si_me.sin_addr.s_addr = INADDR_ANY;
 if (bind(s, &si_me, sizeof(si_me))==-1)
-−
+        {
-       printf("error binding socket\n");
+        printf("error binding socket\n");
-       exit(-1);
+        exit(-1);
-−
+        }
 #if defined (_WIN32)
@@ Line 117: / Line 137: @@
+{
 char buf[BUFLEN];
 slen=sizeof(si_other);
-       if (sendto(s, packet->msg, packet->len, 0, &si_other, slen)==-1)
+        if (sendto(s, packet->msg, packet->len, 0, &si_other, slen)==-1)
-               {  //error sending packet!
+                {  //error sending packet!
-               if(routine)
+                if(routine)
-                       (routine)(1);
+                        (routine)(1);
-−
+                }
-       else{
+        else{
-               if(routine)
+                if(routine)
-               (routine)(0);}
+                (routine)(0);}
 return SCPE_OK;
+}
@@ Line 149: / Line 173: @@
 rc=recvfrom(s, buf, BUFLEN, 0, &si_other, &slen);
 if (rc==-1)
-       {} //error?
+        {} //error?
 else {
-       dev->read_packet->len=rc;
+        dev->read_packet->len=rc;
-      memcpy(dev->read_packet->msg,buf,rc);
+       memcpy(dev->read_packet->msg,buf,rc);
-      eth_add_crc32(dev->read_packet);
+       eth_add_crc32(dev->read_packet);
-      if(dev->read_callback)
+       if(dev->read_callback)
-       (dev->read_callback)(0);
+        (dev->read_callback)(0);
+}
@@ Line 162: / Line 186: @@
 t_stat eth_filter (ETH_DEV* dev, int addr_count,
-                  ETH_MAC* addresses,
+                   ETH_MAC* addresses,
-                  ETH_BOOL all_multicast,
+                   ETH_BOOL all_multicast,
-                  ETH_BOOL promiscuous)
+                   ETH_BOOL promiscuous)
+{
 return SCPE_OK;

← Older revision		Revision as of 19:42, 15 February 2009
Line 50:		Line 50:
	Are identical. You can now boot your emulator and it will have network accesss.		Are identical. You can now boot your emulator and it will have network accesss.

		+	== HECnet ==
		+
		+	The following code snippet in sim_ether.c will allow [[SIMH]] to talk on a [[HECnet]] network. For now the destination bridge & port are compiled in. The following code is also only for unix at the moment...
		+
		+	<pre>
		+	struct sockaddr_in si_me, si_other;
		+	int s, i, slen;
		+
		+	#define SRV_IP "10.0.1.9"
		+	#define PORT 7771
		+	#define BUFLEN 1518
		+
		+	t_stat eth_open(ETH_DEV* dev, char* name, DEVICE* dptr, uint32 dbit)
		+	{
		+	int32 fl;
		+
		+	slen=sizeof(si_other);
		+	if ((s=socket(PF_INET, SOCK_DGRAM, 0))==-1)
		+	memset((char *) &si_me, 0, sizeof(si_me));
		+	si_me.sin_family = AF_INET;
		+	si_me.sin_port = htons(7771);
		+	si_me.sin_addr.s_addr = INADDR_ANY;
		+	if (bind(s, &si_me, sizeof(si_me))==-1)
		+	{
		+	printf("error binding socket\n");
		+	exit(-1);
		+	}
		+
		+
		+	fl = fcntl (s, F_GETFL,0);
		+	fcntl (s, F_SETFL, fl \| O_NONBLOCK);
		+	return SCPE_OK;
		+	}
		+
		+	t_stat eth_close (ETH_DEV* dev)
		+	{
		+	close(s);
		+	return SCPE_OK;
		+	}
		+
		+	t_stat eth_write (ETH_DEV* dev, ETH_PACK* packet, ETH_PCALLBACK routine)
		+	{
		+	char buf[BUFLEN];
		+
		+	slen=sizeof(si_other);
		+
		+	if (sendto(s, packet->msg, packet->len, 0, &si_other, slen)==-1)
		+	{ //error sending packet!
		+	if(routine)
		+	(routine)(1);
		+	}
		+	else{
		+	if(routine)
		+	(routine)(0);}
		+	return SCPE_OK;
		+	}
		+
		+	t_stat eth_read (ETH_DEV* dev, ETH_PACK* packet, ETH_PCALLBACK routine)
		+	{
		+	char buf[2500];
		+	int rc;
		+
		+	if(!dev) return SCPE_UNATT;
		+	if(!packet) return SCPE_ARG;
		+
		+	dev->read_packet = packet;
		+	packet->len = 0;
		+	dev->read_callback = routine;
		+
		+	slen=sizeof(si_other);
		+
		+	memset(&buf,0x0,sizeof(buf));
		+	rc=recvfrom(s, buf, BUFLEN, 0, &si_other, &slen);
		+	if (rc==-1)
		+	{} //error?
		+	else {
		+	dev->read_packet->len=rc;
		+	memcpy(dev->read_packet->msg,buf,rc);
		+	eth_add_crc32(dev->read_packet);
		+	if(dev->read_callback)
		+	(dev->read_callback)(0);
		+	}
		+
		+	return SCPE_OK;
		+	}
		+
		+	t_stat eth_filter (ETH_DEV* dev, int addr_count,
		+	ETH_MAC* addresses,
		+	ETH_BOOL all_multicast,
		+	ETH_BOOL promiscuous)
		+	{
		+	return SCPE_OK;
		+	}
		+
		+	int eth_devices (int max, ETH_LIST* dev)
		+	{
		+	return SCPE_OK;
		+	}
		+	</pre>

	== SLiRP ==		== SLiRP ==