UsbNetHotplug

iPAQ usbnet+hotplug

Note: this document is out of date, please see UsbNet instead. - PaulEggleton

This page covers the changes you may need to make to your Linux desktop system in order to have the USB network adapter (module usbnet) connected automatically every time you plug in your iPAQ. You will need to have USB working and the hotplug package installed.

Currently the following applies only to the iPAQ H3870 connecting to a SuSe Linux 8.2 desktop. (To be updated for other models/distributions - PaulEggleton)

Create a backup copy of your existing usb.usermap file:
```
cp -p /etc/hotplug/usb.usermap ~
```
To change the configuration of the system we've to become superuser:
```
su
```
Edit /etc/hotplug/usb.usermap:
```
vi /etc/hotplug/usb.usermap
```

Now add the following:

# usb module         match_flags idVendor idProduct bcdDevice_lo bcdDevice_hi bDeviceClass bDeviceSubClass bDeviceProtocol bInterfaceClass bInterfaceSubClass bInterfaceProtocol driver_info
iPAQ           0x0003      0x049f   0x505a    0x0000       0x0000       0xff         0x00            0x00            0x00            0x00               0x00               0x00000000

Add the following script to your /etc/init.d (e.g. as SA1100-USB-NIC)

#!/bin/bash
#
# Control script for iPAQ USBNet connection
#
# Author: Michel Stempin
# Creation: 11/08/2002
#
# 04.02.2004, pgf, > NAT added


PC_ADDR=192.168.0.1
IPAQ_ADDR=192.168.0.202/32
IPAQ_NET=192.168.0.0/24
UPLINK_IF=ppp0

start() {
    modprobe usbnet
    ifconfig usb0 inet ${PC_ADDR} up
    if [ $? -ne 0 ]; then
        exit 1
    fi
    echo "1" >/proc/sys/net/ipv4/conf/usb0/proxy_arp
    UPLINK=`ifconfig $UPLINK_IF >/dev/null 2>&1`
#    if [ ${UPLINK_IF} -ne 0 ]; then
#        exit 1
#    fi
#    echo "1" >/proc/sys/net/ipv4/conf/${UPLINK_IF}/proxy_arp
    echo "0" > /proc/sys/net/ipv4/ip_forward
    ip route del $IPAQ_NET  dev usb0
    ip route add $IPAQ_ADDR dev usb0
    iptables -t nat --flush
    iptables -t nat -A POSTROUTING -s ${IPAQ_ADDR} -j MASQUERADE
#   iptables -t nat -A POSTROUTING -s ${IPAQ_NET} -j SNAT --to-source 1.1.1.0
    iptables -L -t nat
    echo "1" > /proc/sys/net/ipv4/ip_forward
}

stop() {
    ifconfig usb0 down
    rmmod -r usbnet
    iptables -t nat --flush
}
case "$1" in
    start|add)
        start
        ;;
    stop|remove)
        stop
        ;;
    *)
        echo $"Usage: $0 {start|stop|add|remove}"
        exit 1
esac

Add this script to /etc/hotplug/usb as ipaq:

#!/bin/sh
# iPAQ3870 - ${DEVICE} USB Event: ${ACTION}
if [ -x /etc/init.d/SA1100-USB-NIC ]; then
        if [ "${ACTION}" = "add" ]; then
                /etc/init.d/SA1100-USB-NIC start && exit 0
        else
                /etc/init.d/SA1100-USB-NIC stop  && exit 0
        fi
fi

Patrik Gfeller, gfellerpatrik@gmx.net

Handhelds.org - Open source for handheld devices

iPAQ usbnet+hotplug