28 Nov
2002
28 Nov
'02
10:50 a.m.
Hi -
From: Andru Luvisi <luvisi(a)andru.sonoma.edu>
I have gotten 2.11 installed on simh, I have it recognizing the simulated
ethernet card, and everything appears correct except the packets just
aren't getting in and out. The simh documentation says that the DELQA
card is better than the DEQNA, but I was unable to get the DELQA (qt)
driver to recognize the card. When I compiled the kernel to use the DEQNA
There are TWO variants of the DELQA as I recall. One was referred
to as the "turbo" verion (I think it was called the DELQA-YM) and
the if_qt driver was developed and tested specifically for, and only
for, that variant. The normal DELQA and DEQNA should use the if_qe
driver.
I have configured 2.11BSD with:
A valid IP address on the network the host is on.
The same netmask, broadcast, and gateway as the host.
I am running the emulator as root.
The docs say you won't be able to talk between the host and the emulated
Hmmm, that seems strange. Using P11 I talk between the host (the
machine running the emulator program) and the "PDP11" all the time.
Ah, it has to do with ARP handling I suspect. I know that with P11
it's IP only and thus ARP packets do not traverse the emulated ethernet
card. If that is the case with simh as well then on the PDP11 side
you might have to do what I did and install arp entries for everything
on the local lan with which the PDP11 is going to communicate. That
way the 11 already knows the 'mac' address and does not need ARP (which
doesn't work thru the emulated ethernet) at all.
machine, so my test for each configuration has been
pinging the gateway,
which I know responds to pings since I can ping it from the host.
Ah, but on the host did you publish an ARP entry so that the host
will arp for the PDP11? I think that is required.
I would tinker around with installing published/proxy arp entries and
seeing what happens.
Cheers,
Steven Schultz
sms(a)2bsd.com
29 Nov
29 Nov
7:22 a.m.
New subject: [pups] 2.11BSD networking on simh
On Wed, 27 Nov 2002, Steven M. Schultz wrote:
I couldn't say. I just tried setting the arp information for the gateway
in 2.11BSD, but to no avail.
I just tried it, also to no avail.
Hi -
The qe driver does appear to recognize the DELQA. Same results as with
the DEQNA. It sees it, recognizes the ethernet address I configured it
with, and the network configuration all seems to work, but once it's all
up I can't get anywhere.
From: Andru Luvisi
<luvisi(a)andru.sonoma.edu>
I have gotten 2.11 installed on simh, I have it recognizing the simulated
ethernet card, and everything appears correct except the packets just
aren't getting in and out. The simh documentation says that the DELQA
card is better than the DEQNA, but I was unable to get the DELQA (qt)
driver to recognize the card. When I compiled the kernel to use the DEQNA
There are TWO variants of the DELQA as I recall. One was referred
to as the "turbo" verion (I think it was called the DELQA-YM) and
the if_qt driver was developed and tested specifically for, and only
for, that variant. The normal DELQA and DEQNA should use the if_qe
driver. I have
configured 2.11BSD with:
A valid IP address on the network the host is on.
The same netmask, broadcast, and gateway as the host.
I am running the emulator as root.
The docs say you won't be able to talk between the host and the emulated
Hmmm, that seems strange. Using P11 I talk between the host (the
machine running the emulator program) and the "PDP11" all the time.
Ah, it has to do with ARP handling I suspect. I know that with P11
it's IP only and thus ARP packets do not traverse the emulated ethernet
card. If that is the case with simh as well then on the PDP11 side
you might have to do what I did and install arp entries for everything
on the local lan with which the PDP11 is going to communicate. That
way the 11 already knows the 'mac' address and does not need ARP (which
doesn't work thru the emulated ethernet) at all. machine, so my
test for each configuration has been pinging the gateway,
which I know responds to pings since I can ping it from the host.
Ah, but on the host did you publish an ARP entry so that the host
will arp for the PDP11? I think that is required. I would tinker around with installing published/proxy
arp entries and
seeing what happens.
tcpdump isn't showing me any packets coming from or to the IP or ethernet
address of the emulated PDP-11.
Andru
--
Andru Luvisi, Programmer/Analyst
Quote Of The Moment:
"Taking the envelope and pencil in his otherwise empty hands, the
medium feels it, stares into space, grunts, foams at the mouth, and
otherwise becomes very psychic."
- Theodore Annemann
3 Dec
3 Dec
3:52 a.m.
New subject: [pups] 2.11BSD networking on simh
I finally tracked it down with strace. The send() function was
complaining about not being connected.
By changing it to a sendto and providing some hard coded data I was able
to make it work. Obviously this is not the "correct" solution, but it
illustrates the problem.
Here's the patch:
--- sim_ether.c.org Mon Dec 2 12:43:49 2002
+++ sim_ether.c Mon Dec 2 13:51:47 2002
@@ -406,7 +406,9 @@
int pcap_sendpacket(pcap_t* handle, u_char* msg, int len)
{
- return (send(pcap_fileno(handle), msg, len, 0) == len)?0:-1;
+ struct sockaddr_pkt spkt = { AF_INET, "eth0", -1 };
+ return (sendto(pcap_fileno(handle), msg, len, 0,
+ (struct sockaddr *)&spkt, sizeof(spkt)) == len)?0:-1;
}
int PacketGetAdapterNames(char* buffer, int* size)
8055
days inactive
8059
days old
2 comments
2 participants
participants (2)
-
Andru Luvisi -
Steven M. Schultz