I have been doing a lot of qeth testing both layer2 and layer3 and
have run into a problem when using the iface parameter on the qeth
definition.
My host environment is debian stable using an updated kernel
linux-3.12.1-amd64
Hercules is version 4.0 from the github/hyperion repository and I used
configure --enable-debug --prefix= ...... to generate hercules
My guest is debian-390 testing, the only addition is the s390-tools from the IBM
DeveloperWorks website, because the debian version is incomplete for
some reason!!!
My comms devices are:
#0440.2 CTCI tun2
0440.2 CTCI 192.168.200.1 192.168.200.2
#0F40.3 QETH ipaddr 192.168.10.100 debug
0F40.3 QETH iface tun2 debug
I initially installed the guest with the vCTC, installed the
correct s390-tools, then used znetconf -a 0f40 -o layer2=0 to set
up the layer3 qeth device. at which point hercules stops with a Bus Error.
I set the tun2 device up on the host side with the ip command
as follows:
ip tuntap add dev tun2 mode tun
ip link set tun2 up
ip addr add 192.168.100.100 peer 192.168.100.50 dev tun2
The ip addr list then shows
23: tun2: <NO-CARRIER,POINTOPOINT,MULTICAST,NOARP,UP> mtu 1500 qdisc pfifo_fast
state DOWN qlen 500
link/none
valid_lft forever preferred_lft forever
To validate the tun2 devices I tried to use it for the vCTC connection,
and it is recognized as a valid device
Tun2 before hercules starts:
23: tun2: <NO-CARRIER,POINTOPOINT,MULTICAST,NOARP,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 500
link/none
valid_lft forever preferred_lft forever
Hercules displays as it starts up:
HHC02198I Device 0440 type 3088 subchannel 0:0004 attached
HHC00901I 0:0440 CTCI: interface tun2, type TUN opened
HHC02198I Device 0441 type 3088 subchannel 0:0005 attached
Tun2 after hercules acquires it:
23: tun2: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 500
link/none
valid_lft forever preferred_lft forever
I'm not a c programmer but as far as I can see the same code
is used to open tun2 for both qeth and vCTC.
I have both the run log and a screen print of the last screen
displayed by hercules before it stops.
Let me know what else you need from me.
Dave Clements.