Plug-and-Play USB Networking
From Openmoko
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You need a linux/unix computer with working NetworkManager setup. | You need a linux/unix computer with working NetworkManager setup. | ||
I have successfully use this method more than a month now, with Ubuntu 9.04 (jaunty), | I have successfully use this method more than a month now, with Ubuntu 9.04 (jaunty), | ||
| − | I will test it also on Ubuntu 8.10 (intrepid), and report back here. | + | I will test it also on Ubuntu 8.10 (intrepid), and report back here.(I tested, and it does not work, however 9.10 works great) |
| + | |||
| + | == Tested distributions == | ||
| + | {| border="1" cellspacing=0 cellpadding=4 | ||
| + | !Distribution | ||
| + | !NetworkManager version | ||
| + | !Known to work | ||
| + | |- | ||
| + | |Ubuntu 8.10 (Intrepid) | ||
| + | |? | ||
| + | |style="background-color:Red"|NO | ||
| + | |- | ||
| + | |Ubuntu 9.04 (Jaunty) | ||
| + | |0.7.1~rc4-0ubuntu1 | ||
| + | |style="background-color:Green"|YES | ||
| + | |- | ||
| + | |Ubuntu 9.10 (Karmic) | ||
| + | |? | ||
| + | |style="background-color:Green"|YES | ||
| + | |} | ||
| + | |||
The NetworkManager on jaunty is: | The NetworkManager on jaunty is: | ||
| Line 22: | Line 42: | ||
= File/directory structure = | = File/directory structure = | ||
| − | /etc/NetworkManager/system-connections/freerunner_bob (owner: root, rights: 600) | + | /etc/NetworkManager/system-connections/freerunner_bob (owner: root, rights: 600) |
/etc/NetworkManager/system-connections/freerunner_bobek (owner: root, rights: 600) | /etc/NetworkManager/system-connections/freerunner_bobek (owner: root, rights: 600) | ||
| − | /etc/NetworkManager/dispatcher.d/10myiptables (owner: root, rights: 755) | + | /etc/NetworkManager/dispatcher.d/10myiptables (owner: root, rights: 755) |
= File contents = | = File contents = | ||
| Line 58: | Line 78: | ||
[802-3-ethernet] | [802-3-ethernet] | ||
mac-address=00:1f:11:01:6e:12 | mac-address=00:1f:11:01:6e:12 | ||
| + | </pre> | ||
| + | |||
| + | /etc/NetworkManager/dispatcher.d/10myiptables: | ||
| + | <pre> | ||
| + | #!/bin/sh -e | ||
| + | # Script to dispatch NetworkManager events | ||
| + | # | ||
| + | # Runs ifupdown scripts when NetworkManager fiddles with interfaces. | ||
| + | |||
| + | # Bobek's freerunner | ||
| + | export MYUUID1="27afa607-ee36-43f0-b8c3-9d245cdc4bb3" | ||
| + | |||
| + | # Bob's freerunner | ||
| + | export MYUUID2="27afa607-ee36-43f0-b8c3-9d245cdc4bb4" | ||
| + | |||
| + | # The computer's username | ||
| + | export USERNAME="lolza" | ||
| + | |||
| + | if [ -z "$1" ]; then | ||
| + | echo "$0: called with no interface" 1>&2 | ||
| + | exit 1; | ||
| + | fi | ||
| + | |||
| + | # Fake ifupdown environment | ||
| + | export IFACE="$1" | ||
| + | export LOGICAL="$1" | ||
| + | export ADDRFAM="NetworkManager" | ||
| + | export METHOD="NetworkManager" | ||
| + | export VERBOSITY="0" | ||
| + | |||
| + | # Run the right scripts | ||
| + | case "$2" in | ||
| + | up) | ||
| + | export MODE="start" | ||
| + | export PHASE="up" | ||
| + | |||
| + | if [ -f /sys/class/net/$IFACE/address ] ; then | ||
| + | tmpfile=`mktemp -t` | ||
| + | echo $CONNECTION_UUID > $tmpfile | ||
| + | if [ "X${CONNECTION_UUID}" = "X${MYUUID1}" ] ; then | ||
| + | echo "Bobek's Freerunner connected..." >> $tmpfile | ||
| + | date >> $tmpfile | ||
| + | iptables -A POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24 | ||
| + | iptables -P FORWARD ACCEPT | ||
| + | sysctl -w net.ipv4.ip_forward=1 | ||
| + | sudo -u ${USERNAME} ssh-keygen -R 192.168.0.202 | ||
| + | else | ||
| + | if [ "X${CONNECTION_UUID}" = "X${MYUUID2}" ] ; then | ||
| + | echo "Bob's Freerunner connected..." >> $tmpfile | ||
| + | date >> $tmpfile | ||
| + | iptables -A POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24 | ||
| + | iptables -P FORWARD ACCEPT | ||
| + | sysctl -w net.ipv4.ip_forward=1 | ||
| + | sudo -u ${USERNAME} ssh-keygen -R 192.168.0.202 | ||
| + | fi | ||
| + | fi | ||
| + | fi | ||
| + | ;; | ||
| + | down) | ||
| + | export MODE="stop" | ||
| + | export PHASE="down" | ||
| + | |||
| + | tmpfile=`mktemp -t` | ||
| + | echo "down called..." >> $tmpfile | ||
| + | tmpfile=`mktemp -t` | ||
| + | echo $CONNECTION_UUID > $tmpfile | ||
| + | if [ "X${CONNECTION_UUID}" = "X${MYUUID1}" ] ; then | ||
| + | echo "Bobek's Freerunner disconnected..." >> $tmpfile | ||
| + | iptables -D POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24 | ||
| + | iptables -P FORWARD ACCEPT | ||
| + | sysctl -w net.ipv4.ip_forward=0 | ||
| + | else | ||
| + | if [ "X${CONNECTION_UUID}" = "X${MYUUID2}" ] ; then | ||
| + | echo "Bob's Freerunner disconnected..." >> $tmpfile | ||
| + | iptables -D POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24 | ||
| + | iptables -P FORWARD ACCEPT | ||
| + | sysctl -w net.ipv4.ip_forward=0 | ||
| + | fi | ||
| + | fi | ||
| + | ;; | ||
| + | *) | ||
| + | echo "$0: called with unknown action \`$2'" 1>&2 | ||
| + | exit 1 | ||
| + | ;; | ||
| + | esac | ||
</pre> | </pre> | ||
[[Category:USB]] | [[Category:USB]] | ||
Latest revision as of 05:51, 29 November 2009
Contents |
[edit] Introduction
I provide here an example setup which are more complicated than your setup probably will be.
[edit] Use case
I have 1 laptop and 2 freerunners. Whenever I plug my freerunner, I want my laptop recognize which freerunner was plugged in and act accordingly. Also automagically set up the networking for me.
[edit] Prerequisites
You need a linux/unix computer with working NetworkManager setup. I have successfully use this method more than a month now, with Ubuntu 9.04 (jaunty), I will test it also on Ubuntu 8.10 (intrepid), and report back here.(I tested, and it does not work, however 9.10 works great)
[edit] Tested distributions
| Distribution | NetworkManager version | Known to work |
|---|---|---|
| Ubuntu 8.10 (Intrepid) | ? | NO |
| Ubuntu 9.04 (Jaunty) | 0.7.1~rc4-0ubuntu1 | YES |
| Ubuntu 9.10 (Karmic) | ? | YES |
The NetworkManager on jaunty is:
ii network-manager 0.7.1~rc4-0ubuntu1 ii network-manager-gnome 0.7.1~rc4.1-0ubuntu1
[edit] File/directory structure
/etc/NetworkManager/system-connections/freerunner_bob (owner: root, rights: 600) /etc/NetworkManager/system-connections/freerunner_bobek (owner: root, rights: 600) /etc/NetworkManager/dispatcher.d/10myiptables (owner: root, rights: 755)
[edit] File contents
/etc/NetworkManager/system-connections/freerunner_bob:
[connection] id=Bob's moko uuid=27afa607-ee36-43f0-b8c3-9d245cdc4bb4 type=802-3-ethernet autoconnect=true timestamp=0 [ipv4] method=manual never-default=true address1=192.168.0.200;24 [802-3-ethernet] mac-address=00:1f:11:01:5d:13
/etc/NetworkManager/system-connections/freerunner_bobek:
[connection] id=Bobek's moko uuid=27afa607-ee36-43f0-b8c3-9d245cdc4bb3 type=802-3-ethernet autoconnect=true timestamp=0 [ipv4] method=manual never-default=true address1=192.168.0.200;24 [802-3-ethernet] mac-address=00:1f:11:01:6e:12
/etc/NetworkManager/dispatcher.d/10myiptables:
#!/bin/sh -e
# Script to dispatch NetworkManager events
#
# Runs ifupdown scripts when NetworkManager fiddles with interfaces.
# Bobek's freerunner
export MYUUID1="27afa607-ee36-43f0-b8c3-9d245cdc4bb3"
# Bob's freerunner
export MYUUID2="27afa607-ee36-43f0-b8c3-9d245cdc4bb4"
# The computer's username
export USERNAME="lolza"
if [ -z "$1" ]; then
echo "$0: called with no interface" 1>&2
exit 1;
fi
# Fake ifupdown environment
export IFACE="$1"
export LOGICAL="$1"
export ADDRFAM="NetworkManager"
export METHOD="NetworkManager"
export VERBOSITY="0"
# Run the right scripts
case "$2" in
up)
export MODE="start"
export PHASE="up"
if [ -f /sys/class/net/$IFACE/address ] ; then
tmpfile=`mktemp -t`
echo $CONNECTION_UUID > $tmpfile
if [ "X${CONNECTION_UUID}" = "X${MYUUID1}" ] ; then
echo "Bobek's Freerunner connected..." >> $tmpfile
date >> $tmpfile
iptables -A POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24
iptables -P FORWARD ACCEPT
sysctl -w net.ipv4.ip_forward=1
sudo -u ${USERNAME} ssh-keygen -R 192.168.0.202
else
if [ "X${CONNECTION_UUID}" = "X${MYUUID2}" ] ; then
echo "Bob's Freerunner connected..." >> $tmpfile
date >> $tmpfile
iptables -A POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24
iptables -P FORWARD ACCEPT
sysctl -w net.ipv4.ip_forward=1
sudo -u ${USERNAME} ssh-keygen -R 192.168.0.202
fi
fi
fi
;;
down)
export MODE="stop"
export PHASE="down"
tmpfile=`mktemp -t`
echo "down called..." >> $tmpfile
tmpfile=`mktemp -t`
echo $CONNECTION_UUID > $tmpfile
if [ "X${CONNECTION_UUID}" = "X${MYUUID1}" ] ; then
echo "Bobek's Freerunner disconnected..." >> $tmpfile
iptables -D POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24
iptables -P FORWARD ACCEPT
sysctl -w net.ipv4.ip_forward=0
else
if [ "X${CONNECTION_UUID}" = "X${MYUUID2}" ] ; then
echo "Bob's Freerunner disconnected..." >> $tmpfile
iptables -D POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24
iptables -P FORWARD ACCEPT
sysctl -w net.ipv4.ip_forward=0
fi
fi
;;
*)
echo "$0: called with unknown action \`$2'" 1>&2
exit 1
;;
esac
