SKB BUG: Invalid truesize

Per Hermansson hermansson.per at bredband.net
Mon Mar 9 05:14:50 EDT 2009


Hi
You can try the new 0.6.8 release here:
https://launchpad.net/~hermansson-per/+archive/ppa
It works for me but no guarantees it was correctly packaged :-)

/Per

Sylvain skrev:
> Hi list,
>
> I just reported this bug at Ubuntu:
> https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/120172
>
> Basically, I often get 'SKB BUG: Invalid truesize' messages in my logs 
> when a client connects to my AP (and subsequently uses the connection). 
> You can see the whole trace in the bug report.
>
> My config in a nutshell:
> http://ubuntu-utah.ubuntuforums.org/showpost.php?p=6840592&postcount=17
>
> So it's hostapd 0.6.7 with ath9k on an atheros AR5008.
>
> All in all, the connection works, but I do have the 'feeling' that it is 
> far from fast. In fact, skype is not usable through the AP for instance. 
> I hope that fixing that ugly SKB bug would make things faster, better, 
> stronger...
>
> So, I am looking for any advice that would help me fix that SKB BUG 
> problem. Probably the first piece of advice that comes to mind is to 
> upgrade to 0.6.8, but I am kind of reluctant to abandon the deb/apt-get 
> convenience. Of course if it is a known fact that 0.6.8 fixes that 
> particular problem I will happily compile it.
>
> Bonus question: the chip is supposed to support draft n, but
> 1/ iw list shows 54.0 Mbps as the highest bitrate
> 2/ on my eee pc, "iwlist ra0 scan" lists my AP with Bit Rates:118 Mb/s
> Who is right, and what should I do to use the chip at its maximum speed?
>
> Below is my hostapd.conf (cat hostapd.conf | sed -e '/^#/d' -e '/^$/d'), 
> let me know if you need any other information.
>
> Thank you in advance,
> Sylvain
>
> interface=wlan0
> driver=nl80211
> logger_syslog=-1
> logger_syslog_level=2
> logger_stdout=-1
> logger_stdout_level=2
> dump_file=/tmp/hostapd.dump
> ctrl_interface=/var/run/hostapd
> ctrl_interface_group=0
> ssid=lous
> hw_mode=g
> channel=5
> beacon_int=100
> dtim_period=2
> max_num_sta=255
> rts_threshold=2347
> fragm_threshold=2346
> supported_rates=540
> basic_rates=540
> macaddr_acl=1
> accept_mac_file=/etc/hostapd/accept
> auth_algs=1
> ignore_broadcast_ssid=0
> wme_enabled=1
> wme_ac_bk_cwmin=4
> wme_ac_bk_cwmax=10
> wme_ac_bk_aifs=7
> wme_ac_bk_txop_limit=0
> wme_ac_bk_acm=0
> wme_ac_be_aifs=3
> wme_ac_be_cwmin=4
> wme_ac_be_cwmax=10
> wme_ac_be_txop_limit=0
> wme_ac_be_acm=0
> wme_ac_vi_aifs=2
> wme_ac_vi_cwmin=3
> wme_ac_vi_cwmax=4
> wme_ac_vi_txop_limit=94
> wme_ac_vi_acm=0
> wme_ac_vo_aifs=2
> wme_ac_vo_cwmin=2
> wme_ac_vo_cwmax=3
> wme_ac_vo_txop_limit=47
> wme_ac_vo_acm=0
> ieee80211n=1
> ht_capab=[HT40-][SHORT-GI-40][DSSS_CCK-40]
> eapol_key_index_workaround=0
> eap_server=0
> own_ip_addr=127.0.0.1
> wpa=0
>
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>
>   


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