From owner-freebsd-wireless@FreeBSD.ORG Sun Dec 14 20:22:23 2014 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 7329F7AF for ; Sun, 14 Dec 2014 20:22:23 +0000 (UTC) Received: from mail-yh0-f44.google.com (mail-yh0-f44.google.com [209.85.213.44]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 32253AFD for ; Sun, 14 Dec 2014 20:22:22 +0000 (UTC) Received: by mail-yh0-f44.google.com with SMTP id c41so4578969yho.31 for ; Sun, 14 Dec 2014 12:22:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=RcBz6zfDt6SU24JDnw/4xlRJOkdQ9JJ/ieVGGxETJ9U=; b=SicFwkC4se1SXrzgTAJX2McBB5AWH5FYOndMdHYYUf37ptnj2o4L0+nOwhyUbJTaAM ZIXmDhHvd/H/m9c0LdhRlbYNL4HUbNjHnhD1BO9FTV2sIJvCpGdgG5kReJsgqmoT/ccz lvQoKRjIlIPvDEWvHy8+tpOM5kmQiIjQ2Nvl3DOZh0ll/MtxMqXsxadBfxIPvrLl0/Pz 54Kfi4dTap1MaGfcltvQ4lQcAReYvor9Mesrb6dfQWowV1Wj/0UgFkYS9sG1TNyLTqLc zwLiSOx2T15prDw+RrKjEQkc4Iy9VLJfvNbsRdnUIHGUKek89Z2Yi7DLLxArs1sGoThK YVrg== X-Gm-Message-State: ALoCoQnrORSRvCIXx9wL2rwBI2NvWmiS6L1IMd7j6bQsKRXYIdsv4RTLPPagcrbuzvet9rJdx+qD MIME-Version: 1.0 X-Received: by 10.170.120.143 with SMTP id m137mr22087997ykb.61.1418587115137; Sun, 14 Dec 2014 11:58:35 -0800 (PST) Received: by 10.170.156.197 with HTTP; Sun, 14 Dec 2014 11:58:35 -0800 (PST) In-Reply-To: References: Date: Sun, 14 Dec 2014 14:58:35 -0500 Message-ID: Subject: Re: Problem with Atheros adapter (TP-LINK TL-WDN4800, AR9380) From: David Blewett To: Adrian Chadd Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 Cc: "freebsd-wireless@freebsd.org" X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 14 Dec 2014 20:22:23 -0000 Okay, I can try to give that a go. Will take me a bit. I use ZFS on encrypted geli devices, and haven't tried building a custom kernel yet with this config. Thanks, David Blewett On Sun, Dec 14, 2014 at 2:55 PM, Adrian Chadd wrote: > > Aha! Listen time is 0. Hm! > > > Just add this at line 1179 and recompile: > > > if (ani_state->listen_time == 0) > return; > > it's possible that it'll happen; it shoud be bailing out sooner rather > than later. > > > > -adrian > > > On 14 December 2014 at 11:53, David Blewett > wrote: > > If this would be easier on IRC, I'm BlueAidan on Freenode. > > > > Output: > > > > (kgdb) list *0xffffffff8045161d > > 0xffffffff8045161d is in ar9300_ani_ar_poll > > (/usr/src/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_ani.c:1180). > > 1175 */ > > 1176 if (!DO_ANI(ah)) { > > 1177 return; > > 1178 } > > 1179 > > 1180 ofdm_phy_err_rate = > > 1181 ani_state->ofdm_phy_err_count * 1000 / > > ani_state->listen_time; > > 1182 cck_phy_err_rate = > > 1183 ani_state->cck_phy_err_count * 1000 / > > ani_state->listen_time; > > 1184 > > > > Thanks, > > > > David Blewett > > > > On Sun, Dec 14, 2014 at 2:39 PM, Adrian Chadd > wrote: > >> > >> Hi! > >> > >> Hm, an integer divide by zero fault. Tsk. > >> > >> can you do this: > >> > >> kgdb /boot/kernel/kernel > >> list *0xffffffff8045161d > >> > >> Thanks! > >> > >> > >> > >> -adrian > >> > >> > >> On 14 December 2014 at 11:24, David Blewett > >> wrote: > >> > Hi All: > >> > > >> > I've been having issues with a TP-LINK TL-WDN4800 PCI Express adapter > >> > [1] > >> > that seem to have become worse since upgrading to 10.1-RELEASE. Since > >> > then, > >> > I've had a couple of kernel panics. I use the adapter in hostapd mode > as > >> > my > >> > main WiFi access point. I would appreciate any help in making my setup > >> > more > >> > reliable, and am open to trying to just about anything to help > >> > troubleshoot. > >> > > >> > The problems that I see are regular disconnections from a Macbook Pro > >> > client. When this happens, sometimes the wifi icon says it is > connected, > >> > but I cannot actually transmit anything to the host (i.e., pings > fail). > >> > The > >> > only recourse is to turn the mbp's wifi off, then back on. This > >> > *usually* > >> > succeeds, but sometimes does not. I also have an iPad that has similar > >> > issues; turning wifi off and back on is usually sufficient to restore > >> > connectivity. > >> > > >> > This is my /etc/rc.conf: > >> > > >> > wlans_ath0="wlan0" > >> > create_args_wlan0="wlanmode hostap bssid" > >> > ifconfig_wlan0="HOSTAP ssid MiddleEarth mode 11ng channel 2" > >> > > >> > and /etc/hostapd-wlan0.conf: > >> > > >> > interface=wlan0 > >> > debug=2 > >> > ctrl_interface=/var/run/hostapd > >> > ctrl_interface_group=wheel > >> > ssid=MiddleEarth > >> > wpa=2 > >> > wpa_passphrase=xxxx > >> > wpa_key_mgmt=WPA-PSK > >> > wpa_pairwise=CCMP > >> > > >> > I see a lot of this in the logs: > >> > > >> > ath0: stuck beacon; resetting (bmiss count 8) > >> > > >> > However, from what I've read these are due to channel congestion and > are > >> > to > >> > be expected. The kernel panics look like this: > >> > > >> > Fatal trap 18: integer divide fault while in kernel mode > >> > cpuid = 1; apic id = 11 > >> > instruction pointer = 0x20:0xffffffff8045161d > >> > stack pointer = 0x28:0xfffffe00e43bb760 > >> > frame pointer = 0x28:0xfffffe00e43bb7b0 > >> > code segment = base 0x0, limit 0xfffff, type 0x1b > >> > = DPL 0, pres 1, long 1, def32 0, gran 1 > >> > processor eflags = interrupt enabled, ath0: stuck beacon; resetting > >> > (bmiss count 8) > >> > resume, IOPL = 0 > >> > current process = 12 (swi4: clock) > >> > trap number = 18 > >> > panic: integer divide fault > >> > cpuid = 0 > >> > KDB: stack backtrace: > >> > #0 0xffffffff80963000 at kdb_backtrace+0x60 > >> > #1 0xffffffff80928125 at panic+0x155 > >> > #2 0xffffffff80d24f1f at trap_fatal+0x38f > >> > #3 0xffffffff80d24b7c at trap+0x75c > >> > #4 0xffffffff80d0a782 at calltrap+0x8 > >> > #5 0xffffffff8045b248 at ar9300_ani_poll_freebsd+0x48 > >> > #6 0xffffffff804093d6 at ath_calibrate+0xf6 > >> > #7 0xffffffff8093d557 at softclock_call_cc+0x177 > >> > #8 0xffffffff8093d994 at softclock+0x94 > >> > #9 0xffffffff808faf4b at intr_event_execute_handlers+0xab > >> > #10 0xffffffff808fb396 at ithread_loop+0x96 > >> > #11 0xffffffff808f8b6a at fork_exit+0x9a > >> > > >> > Here is the pciconf output: > >> > > >> > ath0@pci0:2:0:0: class=0x028000 card=0x3112168c chip=0x0030168c > >> > rev=0x01 > >> > hdr=0x00 > >> > vendor = 'Atheros Communications Inc.' > >> > device = 'AR9300 Wireless LAN adaptor' > >> > class = network > >> > > >> > 1. http://www.tp-link.com/lk/products/details/?model=TL-WDN4800 > >> > > >> > Thanks, > >> > > >> > David Blewett > >> > _______________________________________________ > >> > freebsd-wireless@freebsd.org mailing list > >> > http://lists.freebsd.org/mailman/listinfo/freebsd-wireless > >> > To unsubscribe, send any mail to > >> > "freebsd-wireless-unsubscribe@freebsd.org" >