[Voyage-linux] strange messages olsrd

[Frederico Marques]

Ola' Xavier,

I've been playing with Adhoc Mesh + Madwifi + OLSR for the past 2  
years and I warn you, unfortunately Madwifi + Adhoc is not very  
stable, yet (for me it gave me too much trouble). The xmit buf is a  
known bug, I advise you first to run last stable version of Madwifi  
(0.9.4) as the version that ships with Voyage is old (from debian  
stable repos). One of the workarounds is to disable power saving mode:

iwpriv ath0 uapsd 0

Don't know if it works for you. For others to solutions is to  
increase a ATH_TX buffer to 400 on the code and recompile the driver  
(yes, ugly hack).

http://madwifi.org/ticket/717

Good luck,

Fred

On Apr 14, 2008, at 1:18 PM, Xavier Martinez wrote:
> Hi!
>
> We are developing a mesh network (olsrd) supported by a trunk network
> in Spain.  We are currently using voyage 0.4.1 for the WRAPs of the
> trunk network in ad-hoc and a mode. Until now, in the trunk we used
> linksys with freifunk to give OLSR coverage to clients and WRAPS to
> link nodes with dedicated links over an OSPF network and no problem.
> OLSR nodes in the trunk are "forced" to pass over the OSPF network
> using an openvpn connection (Interface tapX)
>
> Recently, we tried to replace linksys for WRAPs with voyage 0.4.1 with
> olsrd and openvpn installed. We configured the openvpn links and it
> seemed to work properly. However, later we've realized that
> /var/log/messages is flooded with:
>
> kernel: ath_mgtstart: discard, no xmit buf
>
> It happens in b and g mode (we have not tried a mode). However, WRAPs
> that are in the OSPF don't show this weird behaviour. Any ideas?
>
> Here are the olsr and interfaces configuration:
>
> /etc/olsrd.conf
>
> DebugLevel              0
> IpVersion               4
> AllowNoInt              yes
> Pollrate                0.1
> TcRedundancy            2
> MprCoverage             7
> LinkQualityFishEye      1
> LinkQualityWinSize      100
> LinkQualityDijkstraLimit 0 6.0
> LinkQualityLevel 2
> UseHysteresis no
> Interface "ath0" "ath1"
>         {
>         HelloInterval           4.0
>         HelloValidityTime       72.0
>         TcInterval              3.0
>         TcValidityTime          216.0
>         MidInterval             12.0
>         MidValidityTime         216.0
>         HnaInterval             12.0
>         HnaValidityTime         72.0
>         }
>
> Interface "tap0"
> {
>         HelloInterval           5.0
>         HelloValidityTime       90.0
>         TcInterval              2.0
>         TcValidityTime          270.0
>         MidInterval             15.0
>         MidValidityTime         90.0
>         HnaInterval             15.0
>         HnaValidityTime         90.0
>         Ip4Broadcast 10.224.255.255
> }
> # Olsrd plugins to load
> LoadPlugin "olsrd_httpinfo.so.0.1"
>         {
>         PlParam     "port"   "80"
>         PlParam     "Net"    "0.0.0.0 0.0.0.0"
>         }
> LoadPlugin "olsrd_nameservice.so.0.3"
>         {
>         PlParam "name"          "TDT-4"
>         PlParam "hosts-file"    "/tmp/hosts.olsr"
>         PlParam "resolv-file"   "/tmp/resolv.conf.olsr"
>        }
> LoadPlugin "olsrd_dyn_gw.so.0.4"
>         {
>         PlParam     "Interval"   "40"
>         PlParam     "Ping"  "80.58.0.33"
>         }
> LoadPlugin "olsrd_txtinfo.so.0.1"
>         {
>         PlParam "Accept" "127.0.0.1"
>         }
>
> /etc/network/interfaces
>
> auto lo
> iface lo inet loopback
>
>
> auto ath0
> iface ath0 inet static
>         address 10.224.0.14
>         netmask 255.255.0.0
>         pre-up wlanconfig ath0 create wlandev wifi0 wlanmode adhoc
>         pre-up iwconfig ath0 channel 6
>         up iwconfig ath0 essid guifibages
>         up sysctl -w dev.wifi0.diversity=0
>         up sysctl -w dev.wifi0.txantenna=1
>         up sysctl -w dev.wifi0.rxantenna=1
>         up athctrl -i wifi0 -d 3000
>         up iwpriv ath0 mode 3
>         up iwconfig ath0 ap 12:34:56:78:9A:BC
>
> auto ath1
> iface ath1 inet static
>         address 10.224.0.15
>         netmask 255.255.0.0
>         pre-up wlanconfig ath1 create wlandev wifi1 wlanmode adhoc
>         pre-up iwconfig ath1 channel 6
>         up iwconfig ath1 essid guifibages
>         up sysctl -w dev.wifi1.diversity=0
>         up sysctl -w dev.wifi1.txantenna=1
>         up sysctl -w dev.wifi1.rxantenna=1
>         up athctrl -i wifi1 -d 3000
>         up iwpriv ath1 mode 3
>         up iwconfig ath1 ap 12:34:56:78:9A:BC
>
> auto eth0
> iface eth0 inet static
>         address 10.225.0.68
>         netmask 255.255.255.240
>         up route add -net 10.225.0.0/16 gw 10.225.0.65
>
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