Re: [zd1211-devs] Problem with MTU > 500
Status: Beta
Brought to you by:
mayne
From: Ernst J. O. <ern...@eu...> - 2010-02-13 22:20:07
|
Ok. I tried, apparantly modprobe.conf is deprecated. So, I created /etc/modprobe.d/mac80211.conf with: options mac80211 ieee80211_default_rc_algo=pid but that doesn't work; dmesg still shows minstrel is used. Putting the same line in modprobe.conf gives the same result; minstrel is still used. Bit of a newbie here; never changed modprobe.conf, so I am unsure whether adding anything to that file still works since it is deprecated and if not what the filename in /etc/modprobe.d/ should be... Perhaps it helps to know that the iwconfig output is also rather minimal: wlan0 IEEE 802.11bg ESSID: [esside deleted] Mode:Managed Frequency:2.437 GHz Access Point: [mac address deleted] Bit Rate=1 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key: [key deleted] Power Management:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 So no link quality, signal level and noise level indicated and the Bit Rate is not correct; I get speeds that fit with 24 Mb/s or higher... So something weird is happening with this setup here. Relevant part of dmesg (mac address of AP masked): usb 1-1: reset high speed USB device using ehci_hcd and address 2 phy0: Selected rate control algorithm 'minstrel' zd1211rw 1-1:1.0: phy0 usbcore: registered new interface driver zd1211rw usb 1-1: firmware: requesting zd1211/zd1211b_ub usb 1-1: firmware: requesting zd1211/zd1211b_uphr zd1211rw 1-1:1.0: firmware version 4725 zd1211rw 1-1:1.0: zd1211b chip 0ace:1215 v4810 high 00-25-86 MAXIM_NEW_RF pa0 -7--- cfg80211: Calling CRDA for country: DE wlan0: direct probe to AP --:--:--:--:--:-- (try 1) wlan0: direct probe responded wlan0: authenticate with AP --:--:--:--:--:-- (try 1) wlan0: authenticated wlan0: associate with AP --:--:--:--:--:-- (try 1) wlan0: RX AssocResp from --:--:--:--:--:-- (capab=0x411 status=0 aid=4) wlan0: associated Any clues? TIA Ernst ----- Original Message ----- From: "Hin-Tak Leung" <hin...@ya...> To: <zd1...@li...>; "Ernst J. Oud" <ern...@eu...> Sent: Saturday, February 13, 2010 9:47 PM Subject: Re: [zd1211-devs] Problem with MTU > 500 Hmm, the default(?) is 1500 - MTU=500 is way too low for normal usage. since zd1211rw is also a mac80211 driver, can you give the pid modprobe.conf a try to see if it helps? See http://bugzilla.kernel.org/show_bug.cgi?id=14168 --- On Sat, 13/2/10, Ernst J. Oud <ern...@eu...> wrote: > L.S. > > I am running Slackware 13.0 (kernel 2.6.32) on an RDC > (=i486 compatible) > small embedded system and using a ZD1211b usb stick for > wlan (client) access > using the standard zd1211rw (module). Firmware version is > 1.4 > > This works fine as long as I specify an MTU > smaller than 500 for > wlan0. > > With a larger MTU the connection aborts when sending > larger amounts of > information, for instance in a telnet session doing an ls > of a large directory. > I can log in and I can do an ls on a small > directory... > > This is not an USB WLAN stick problem; I tried three > separate sticks from > different vendors and they all exhibit this problem. > > With an MTU of say 448, wlan speed is half of what it > could be so any help > would be appreciated. > > TIA > > Ernst |