Hi! Some general question + Wifi USB Realtek RTL8191S

[Jocko]

Hi matzi

Forget that because there is no action "remove" available for eth0, we must make rule on your wlan0.

[matzi]

OK here is what I did up to now. For testing purpose the main instructions in the shellscripts are comment tagged yet.

Created 70-udef.rules in /etc/udev/rules.d

BUS=="usb", SUBSYSTEM=="net", KERNEL=="wlan0", ACTION=="add", RUN="/etc/iface_scripts/bringup_wlan0.sh"
BUS=="usb", SUBSYSTEM=="net", KERNEL=="wlan0", ACTION=="remove", RUN="/etc/iface_scripts/bringdown_wlan0.sh"

/etc/iface_scripts/bringdown_wlan0:

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# ifconfig eth0 up
# /sbin/route add default gw 192.168.178.1 dev eth0
# ifconfig wlan0 down
echo "bringdownwlan0" >> /etc/iface_scripts/udev.log

/etc/iface_scripts/bringup_wlan0:

# ifconfig wlan0 up
# ifconfig eth0 down
echo "bringupwlan0" >> /etc/iface_scripts/udev.log

Created empty file /etc/iface_scripts/udev.log with permission 0666.

That file stays with no entry when plugging / unplugging the dongle. The scripts are not called!?

[Jocko]

if I understand well, you want to test first the udev events (shell command with '#').

if you remove the "#", there is an error in your command line.

You don't follow this warning

Note2: in your shell script, you must use the command with their full path (e.g. /sbin/route) because the PATH environment variable is not available.

so make

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which ifconfig

to find its full path. (same thing for echo)
Otherwise, I would add a command line in /etc/iface_scripts/bringup_wlan0:

/sbin/ifconfig wlan0 up
/sbin/route add default gw 192.168.178.1 dev wlan0
/sbin/ifconfig eth0 down
/usr/bin/echo "bringupwlan0" >> /etc/iface_scripts/udev.log

You must add a gateway rule for wlan0. indeed after a bring down this route is no longer available

[matzi]

modified shell scripts into

# /sbin/ifconfig eth0 up
# /sbin/route add default gw 192.168.178.1 dev eth0
# /sbin/ifconfig wlan0 down
/usr/bin/echo "bringdownwlan0" >> /etc/iface_scripts/udev.log

and

# /sbin/ifconfig wlan0 up
# /sbin/route add dafault gw 192.168.178.1 dev wlan0
# /sbin/ifconfig eth0 down

/usr/bin/echo "bringupwlan0" >> /etc/iface_scripts/udev.log

Still no entry in udev.log

[Jocko]

So do you set run permission on your shell file ?

could you post the output of

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udevinfo -a -p /sys/class/net/wlan0

if the path is wrong do

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 find /sys/class -name wlan0

to get the rigth path

[matzi]

Yes script permission is set to oct 755

root@fvdwsl-base:/ # udevinfo -a -p /sys/class/net/wlan0

udevinfo starts with the device the node belongs to and then walks up the
device chain, to print for every device found, all possibly useful attributes
in the udev key format.
Only attributes within one device section may be used together in one rule,
to match the device for which the node will be created.

looking at device '/devices/platform/orion-ehci.0/usb1/1-1/1-1:1.0/net/wlan0':
KERNEL=="wlan0"
SUBSYSTEM=="net"
SYSFS{mtu}=="1500"
SYSFS{type}=="1"
SYSFS{netdev_group}=="0"
SYSFS{flags}=="0x1002"
SYSFS{addr_assign_type}=="0"
SYSFS{dev_id}=="0x0"
SYSFS{iflink}=="6"
SYSFS{addr_len}=="6"
SYSFS{address}=="7c:dd:90:16:ee:e9"
SYSFS{operstate}=="down"
SYSFS{broadcast}=="ff:ff:ff:ff:ff:ff"
SYSFS{tx_queue_len}=="1000"
SYSFS{ifalias}==""
SYSFS{ifindex}=="6"
SYSFS{link_mode}=="0"

looking at device '/devices/platform/orion-ehci.0/usb1/1-1/1-1:1.0/net':
ID=="net"
BUS==""
DRIVER==""

looking at device '/devices/platform/orion-ehci.0/usb1/1-1/1-1:1.0':
ID=="1-1:1.0"
BUS=="usb"
DRIVER=="rt2800usb"
SYSFS{bInterfaceClass}=="ff"
SYSFS{modalias}=="usb:v148Fp5370d0101dc00dsc00dp00icFFiscFFipFFin00"
SYSFS{bInterfaceSubClass}=="ff"
SYSFS{bInterfaceProtocol}=="ff"
SYSFS{bNumEndpoints}=="07"
SYSFS{supports_autosuspend}=="0"
SYSFS{bAlternateSetting}==" 0"
SYSFS{bInterfaceNumber}=="00"
SYSFS{interface}=="1.0"

looking at device '/devices/platform/orion-ehci.0/usb1/1-1':
ID=="1-1"
BUS=="usb"
DRIVER=="usb"
SYSFS{dev}=="189:1"
SYSFS{bDeviceSubClass}=="00"
SYSFS{bDeviceProtocol}=="00"
SYSFS{devpath}=="1"
SYSFS{idVendor}=="148f"
SYSFS{speed}=="480"
SYSFS{bNumInterfaces}==" 1"
SYSFS{bConfigurationValue}=="1"
SYSFS{bMaxPacketSize0}=="64"
SYSFS{busnum}=="1"
SYSFS{devnum}=="2"
SYSFS{configuration}==""
SYSFS{bMaxPower}=="450mA"
SYSFS{authorized}=="1"
SYSFS{bmAttributes}=="80"
SYSFS{bNumConfigurations}=="1"
SYSFS{maxchild}=="0"
SYSFS{bcdDevice}=="0101"
SYSFS{avoid_reset_quirk}=="0"
SYSFS{quirks}=="0x0"
SYSFS{serial}=="1.0"
SYSFS{version}==" 2.00"
SYSFS{urbnum}=="140"
SYSFS{ltm_capable}=="no"
SYSFS{manufacturer}=="Ralink"
SYSFS{removable}=="unknown"
SYSFS{idProduct}=="5370"
SYSFS{bDeviceClass}=="00"
SYSFS{product}=="802.11 n WLAN"

looking at device '/devices/platform/orion-ehci.0/usb1':
ID=="usb1"
BUS=="usb"
DRIVER=="usb"
SYSFS{dev}=="189:0"
SYSFS{bDeviceSubClass}=="00"
SYSFS{bDeviceProtocol}=="01"
SYSFS{devpath}=="0"
SYSFS{idVendor}=="1d6b"
SYSFS{speed}=="480"
SYSFS{bNumInterfaces}==" 1"
SYSFS{bConfigurationValue}=="1"
SYSFS{bMaxPacketSize0}=="64"
SYSFS{authorized_default}=="1"
SYSFS{busnum}=="1"
SYSFS{devnum}=="1"
SYSFS{configuration}==""
SYSFS{bMaxPower}=="0mA"
SYSFS{authorized}=="1"
SYSFS{bmAttributes}=="e0"
SYSFS{bNumConfigurations}=="1"
SYSFS{maxchild}=="1"
SYSFS{bcdDevice}=="0309"
SYSFS{avoid_reset_quirk}=="0"
SYSFS{quirks}=="0x0"
SYSFS{serial}=="orion-ehci.0"
SYSFS{version}==" 2.00"
SYSFS{urbnum}=="37"
SYSFS{ltm_capable}=="no"
SYSFS{manufacturer}=="Linux 3.9.5 ehci_hcd"
SYSFS{removable}=="unknown"
SYSFS{idProduct}=="0002"
SYSFS{bDeviceClass}=="09"
SYSFS{product}=="Marvell Orion EHCI"

looking at device '/devices/platform/orion-ehci.0':
ID=="orion-ehci.0"
BUS=="platform"
DRIVER=="orion-ehci"
SYSFS{modalias}=="platform:orion-ehci"
SYSFS{uframe_periodic_max}=="100"

looking at device '/devices/platform':
ID=="platform"
BUS==""
DRIVER==""
SYSFS{uevent}==""

[matzi]

Shall I delete bus condition or set it empty?

[Jocko]

so in your udev rules we can sure that the matches: SUBSYSTEM=="net" and KERNEL=="wlan0" are right and should be enough

you could try to remove the test BUS=="usb" and change the run command like this

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SUBSYSTEM=="net", KERNEL=="wlan0", ACTION=="add", RUN+="/bin/sh /etc/iface_scripts/bringup_wlan0.sh"
SUBSYSTEM=="net", KERNEL=="wlan0", ACTION=="remove", RUN+="/bin/sh /etc/iface_scripts/bringdown_wlan0.sh"

[Jocko]

other point :

your shell scripts begin with this first line :

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#!/bin/sh

:mrgreen:

[matzi]

Now the shellscripts are called! I have entry in udev.log.
Then I deleted the comment marks.
Now it is like this:
Booted witout dongle.
Inserted dongle - I loose webinterface access through fixed IP, no access through wireless IP.
Unplugged dongle - I regain webinterface access through fixed IP,no access through wireless IP.

Can't I write the two actual routing tables to my logfile to see what happens? Maybe between the different ifconfig instructions.