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Cisco 7000 (CLAW) support

The c7000 module provides support for a channel attached Cisco 7xxx
family router on Linux/390.  The parameters for the module are as follows:

        base0=0xYYYY    This parameter defines the base unit address of the
                        channel attached router.

        lhost0=s1       This parameter defines the local host name and
                        must match the claw directive "host-name" field
                        (first string).  The default value is "UTS".

        uhost0=s2       This parameter defines the unit's name and must
                        match the claw directive "device-name" field
                        (second string).  The default value is "C7011".

        lappl0=s3       This parameter defines the local application name
                        and must match the claw directive "host-app" field
                        (third string).  The default value is "TCPIP".

        uappl0=s4       This parameter defines the unit application name and
                        must match the claw directive "device-app" field
                        (fourth string).  The default value is "TCPIP".

        dbg=x           This parameter defines the message level.  Higher
                        numbers will result in additional diagnostic messages.
                        The default value is 0.

        noauto=z        This parameter controls the automatic detection of
                        the unit base address (base0).  When set to a non
                        zero value, automatic detection of unit base addresses
                        is not done.  The default value is 0.

Note that the values coded in strings s1 - s4 are case sensitive.

For example, assume that the following claw directive has been coded in
the Cisco router:

claw 0100 6C 129.212.61.101 UTS C7011 TCPIP TCPIP

The module can be loaded using the following command:

insmod c7000 base0=0x336c lhost0="UTS" uhost0="C7011" lappl0="TCPIP" \
uappl0="TCPIP" dbg=0 noauto=1

Additional interfaces can be defined via parameters base1 - base3,
lhost1 - lhost3, lappl1 - lappl3, uhost1 - uhost3, uappl1 - uappl3.
The interfaces are named "ci0" - "ci3".  After loading the module, the
ifconfig command is used to configure the interface.  For example:

ifconfig ci0 129.212.61.101
ifconfig ci0 netmask 255.255.255.0 broadcast 129.212.61.0
ifconfig ci0

The route command is used to specify the router as the default route:

route add default gw 129.212.61.200

The interface can be automatically activated at boot time by following this
procedure:

1) Add the following two lines to file "/etc/conf.modules":

alias ci0 c7000
options c7000 base0=0xYYYY lhost0=s1 uhost0=s2 lappl0=s3 uappl0=s4

2) Edit file "/etc/sysconfig/network" as follows:

NETWORKING=yes
FORWARD_IPV4=no
HOSTNAME=your-hostname
GATEWAYDEV=ci0
GATEWAY=your-gateway-ip-address

Substitute your own host name and gateway IP address.

3) Create a file in directory "/etc/sysconfig/network-scripts" called
"ifcfg-ci0".  The contents are as follows:

DEVICE=ci0
USERCTL=no
ONBOOT=yes
BOOTPROTO=none
BROADCAST=your-broadcast-ip-address
NETWORK=your-network-address
NETMASK=your-netmask
IPADDR=your-ip-address

Substitute your IP address, broadcast IP address, network address and
network mask.

4) chmod +x ifcfg-ci0