Date: Tue, 19 Jun 2007 21:51:10 -0700 From: Sam Leffler <sam@errno.com> To: Rui Paulo <rpaulo@fnop.net> Cc: Sepherosa Ziehau <sepherosa@gmail.com>, freebsd-current@freebsd.org, Andrew Thompson <thompsa@freebsd.org> Subject: Re: ath(4) problems after sam_wifi merge Message-ID: <4678B23E.5040408@errno.com> In-Reply-To: <4678B111.7080301@errno.com> References: <86d4zupje9.wl%rpaulo@fnop.net> <20070617184258.GA31132@heff.fud.org.nz> <86bqfepgad.wl%rpaulo@fnop.net> <ea7b9c170706180416p7d550fbcmbf11cbaf1ef71b15@mail.gmail.com> <86bqfdh4i3.wl%rpaulo@fnop.net> <4678B111.7080301@errno.com>
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Sam Leffler wrote: > Rui Paulo wrote: >> At Mon, 18 Jun 2007 19:16:18 +0800, >> Sepherosa Ziehau wrote: >>> On 6/18/07, Rui Paulo <rpaulo@fnop.net> wrote: >>>> At Mon, 18 Jun 2007 06:42:58 +1200, >>>> Andrew Thompson wrote: >>>>> On Sun, Jun 17, 2007 at 06:42:38PM +0100, Rui Paulo wrote: >>>>>> Hi, >>>>>> I'm having some problems with ath after the sam_wifi branch merge. >>>>>> Basically I have all the necessary modules loaded, but scanning is not >>>>>> working well. >>>>>> >>>>>> % kldstat | egrep wlan\|ath >>>>>> 2 1 0xc097a000 12450 if_ath.ko >>>>>> 3 3 0xc098d000 2ec38 ath_hal.ko >>>>>> 4 8 0xc09bc000 2b65c wlan.ko >>>>>> 5 2 0xc09e8000 43e8 ath_rate.ko >>>>>> 20 1 0xc0af7000 4480 wlan_tkip.ko >>>>>> 21 1 0xc0afc000 2fec wlan_wep.ko >>>>>> 22 1 0xc0aff000 7100 wlan_ccmp.ko >>>>>> 23 1 0xc0b07000 1920 wlan_scan_ap.ko >>>>>> 24 1 0xc0b09000 552c wlan_scan_sta.ko >>>>>> >>>>>> Is anything missing? >>>>>> >>>>>> My card is: >>>>>> ath0: <Atheros 5424/2424> mem 0x90100000-0x9010ffff irq 17 at device 0.0 on pci2 >>>>>> ath0: [ITHREAD] >>>>>> ath0: using obsoleted if_watchdog interface >>>>>> ath0: mac 10.3 phy 6.1 radio 10.2 >>>>>> >>>>>> ath0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 >>>>>> ether 00:17:f2:44:ba:50 >>>>>> media: IEEE 802.11 Wireless Ethernet autoselect (autoselect) >>>>>> status: no carrier >>>>>> ssid "" channel 1 (2412 Mhz 11g) >>>>>> authmode OPEN privacy OFF txpowmax 34 bmiss 7 scanvalid 60 bgscan >>>>>> bgscanintvl 300 bgscanidle 250 roam:rssi11g 14 roam:rate11g 5 >>>>>> protmode CTS burst bintval 100 >>>>>> >>>>>> # ./wlandebug >>>>>> net.wlan.0.debug: 0xffffff<assoc,auth,scan,output,state,power,dot1x,dot1xsm,radius,raddump,radkeys,wpa,acl,wme,superg,doth,inact,roam,rate> >>>>>> >>>>>> After ifconfig ath0 up, the scan goes as: >>>>>> >>>>>> ath0: ieee80211_newstate: INIT -> SCAN >>>>>> ath0: ieee80211_check_scan: active scan, duration 2147483647, desired mode auto, flush >>>>>> ath0: sta_pick_bss: no scan candidate >>>>>> ath0: ieee80211_start_scan: active scan, duration 2147483647, desired mode auto, flush >>>>>> ath0: scan set 1g dwell min 200 max 2000 >>>>>> ath0: scan_next: chan 1g -> 1g [active, dwell min 200 max 2000] >>>>> Does your card have any channels? show the output of 'ifconfig ath0 list >>>>> channels' >>>> % ifconfig ath0 list channels >>>> Channel 1 : 2412 Mhz 11g Channel 60 : 5300* Mhz 11a >>>> Channel 2 : 2417 Mhz 11g Channel 64 : 5320* Mhz 11a >>>> Channel 3 : 2422 Mhz 11g Channel 100 : 5500* Mhz 11a >>>> Channel 4 : 2427 Mhz 11g Channel 104 : 5520* Mhz 11a >>>> Channel 5 : 2432 Mhz 11g Channel 108 : 5540* Mhz 11a >>>> Channel 6 : 2437* Mhz 11g Turbo Channel 112 : 5560* Mhz 11a >>>> Channel 7 : 2442 Mhz 11g Channel 116 : 5580* Mhz 11a >>>> Channel 8 : 2447 Mhz 11g Channel 120 : 5600* Mhz 11a >>>> Channel 9 : 2452 Mhz 11g Channel 124 : 5620* Mhz 11a >>>> Channel 10 : 2457 Mhz 11g Channel 128 : 5640* Mhz 11a >>>> Channel 11 : 2462 Mhz 11g Channel 132 : 5660* Mhz 11a >>>> Channel 12 : 2467* Mhz 11g Channel 136 : 5680* Mhz 11a >>>> Channel 13 : 2472* Mhz 11g Channel 140 : 5700* Mhz 11a >>>> Channel 36 : 5180* Mhz 11a Channel 149 : 5745* Mhz 11a >>>> Channel 40 : 5200* Mhz 11a Channel 153 : 5765* Mhz 11a >>>> Channel 44 : 5220* Mhz 11a Channel 157 : 5785* Mhz 11a >>>> Channel 48 : 5240* Mhz 11a Channel 161 : 5805* Mhz 11a >>>> Channel 52 : 5260* Mhz 11a Channel 165 : 5825* Mhz 11a >>>> Channel 56 : 5280* Mhz 11a >>>> >>>> >>>>> Also, are you using wpa_supplicant or passing any other options to ath >>>>> other than just up? >>>> No. >>> Try this: >>> ifconfig ath0 channel - >>> ifconfig ath0 up scan >> It takes a lot of time to perform a scan. And I never let it finish >> because after 5 minutes, the ithread consumes almost all the CPU: >> >> 24 root 1 -68 - 0K 8K CPU1 1 1:27 92.97% irq17: ath0 > > I don't see the log from this scan. The previous log indicated your > scan set was a single channel. The cpu time accumulated by the ithread > indicates ath is receiving a lot of interrupts which could be caused by > a lot of things but I'm guessing it's MIB overflow interrupts which are > caused by phy errors (athstats will say for sure). > > I believe the part you're using is the new 11n part and you are using > the experimental hal sitting in my home directory. This hal has known > issues with supporting the 11n part including not tuning the radio > parameters in response to phy errors (which would explain a high MIB > overflow interrupt rate). Oops, I see it's a 5424 and not 5416. Please provide athstats output. Sam
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