Bug#461373: netspeed_applet: Monitors the wmaster0 interface when configured to monitor a connected device

[Mike Hommey]

On Mon, Jan 21, 2008 at 10:28:59AM +0100, Josselin Mouette wrote:
> Hi,
> 
> Le vendredi 18 janvier 2008 à 14:11 +0900, Mike Hommey a écrit :
> > Package: netspeed
> > Version: 0.14-1
> > Severity: normal
> > File: netspeed_applet
> > 
> > Wireless devices drivers using the mac80211 stack have a wmaster%d
> > supplementary interface that is used internally. This interface doesn't
> > have RX/TX statistics (probably because it's unconfigured, which is
> > intended), so when netspeed monitors it, it fails to monitor bandwidth.
> > 
> > It appears netspeed picks wmaster0 over wlan0 when configured to monitor
> > a connected device. It should prefer wlan0.
> 
> Normally, Netspeed uses the default route to select the device. If the
> route method fails, it uses libgtop which should also say wmaster0 is
> unconfigured.
> 
> Could you send the output of “route -n” and “ifconfig -a” on your
> system?

jigen:/home/mh# /sbin/ifconfig -a
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:17042 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17042 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:5508087 (5.2 MiB)  TX bytes:5508087 (5.2 MiB)

wlan0     Link encap:Ethernet  HWaddr 00:1d:e0:26:0f:4b  
          inet addr:192.168.1.110  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::21d:e0ff:fe26:f4b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6209019 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3561569 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:8938473661 (8.3 GiB)  TX bytes:351669936 (335.3 MiB)

wmaster0  Link encap:UNSPEC  HWaddr 00-1D-E0-26-0F-4B-00-00-00-00-00-00-00-00-00-00  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

jigen:/home/mh# /sbin/route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 wlan0
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 wlan0

It seems that when enabling "Always monitor a connected device, if possible",
it doesn't care very much about routes. If I disable it, select "lo" and
enable it again, lo is monitorred (it's UP, after all). Likewise for
wmaster0 and wlan0. And once it's settled on wlan0, if you bring your
interfaces down (e.g, with the nm-applet by disabling networking, which
brings both wmaster0 and wlan0 down, but not lo), it switches to
wmaster0 and tells wmaster0 is down. Then, enabling networking again
brings up the interfaces again, but netspeed stays on wmaster0.

Mike