From: Arend van Spriel <arend@broadcom.com> To: Michael Tokarev <mjt@tls.msk.ru> Cc: Seth Forshee <seth.forshee@canonical.com>, <brcm80211-dev-list@broadcom.com>, <linux-wireless@vger.kernel.org>, <netdev@vger.kernel.org> Subject: Re: BCM4313 & brcmsmac & 3.12: only semi-working? Date: Wed, 24 Sep 2014 15:28:00 +0200 [thread overview] Message-ID: <5422C6E0.3080002@broadcom.com> (raw) In-Reply-To: <5421B78E.4050908@msgid.tls.msk.ru> On 09/23/14 20:10, Michael Tokarev wrote: > 23.09.2014 21:35, Arend van Spriel wrote: >> On 09/23/14 18:02, Michael Tokarev wrote: > >>> Oh. Indeed. While I enabled it, I recompiled only drivers/net/wireless, >>> but not net/. Rebuilt, another trace is here -- >>> >>> http://www.corpit.ru/mjt/tmp/brcmsmac-4313-trace-201409233.dat.gz >>> >>> Thanks, >> >> Just to confirm. With this trace you also get a stall during wget? > > Yes. Initially it started d/loading but some time later the d/load speed > reduced to 0. It is possible to wait further, and after some more time > it will receive some more bytes/kilobytes/packets and stall again. Overall > progress is nearing zero. I looked at the log. I see download commence because the packets received of 1562 bytes length. So within one second I see little over 200 packets so approx. 3Mbps which is not impressive but I don't know what can be expected. Indeed after that it stalls and we only seem to receive small packets of 179 bytes that seem to end up in cfg80211_mgmt_rx. It could be that the hardware is somehow bogged and can not receive at higher modulations as management frames are transmitted at lower rates. The hardware will drop packets that are having FCS (aka. checksum) errors. The brcmsmac is missing some code to read fcs error count from hardware, but I will get back to you with a patch that we can use to confirm this. Regards, Arend > Thanks, > > /mjt
WARNING: multiple messages have this Message-ID (diff)
From: Arend van Spriel <arend-dY08KVG/lbpWk0Htik3J/w@public.gmane.org> To: Michael Tokarev <mjt-XAri/EZa3C4vJsYlp49lxw@public.gmane.org> Cc: Seth Forshee <seth.forshee-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>, <brcm80211-dev-list-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>, <linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> Subject: Re: BCM4313 & brcmsmac & 3.12: only semi-working? Date: Wed, 24 Sep 2014 15:28:00 +0200 [thread overview] Message-ID: <5422C6E0.3080002@broadcom.com> (raw) In-Reply-To: <5421B78E.4050908-Gdu+ltImwkhes2APU0mLOQ@public.gmane.org> On 09/23/14 20:10, Michael Tokarev wrote: > 23.09.2014 21:35, Arend van Spriel wrote: >> On 09/23/14 18:02, Michael Tokarev wrote: > >>> Oh. Indeed. While I enabled it, I recompiled only drivers/net/wireless, >>> but not net/. Rebuilt, another trace is here -- >>> >>> http://www.corpit.ru/mjt/tmp/brcmsmac-4313-trace-201409233.dat.gz >>> >>> Thanks, >> >> Just to confirm. With this trace you also get a stall during wget? > > Yes. Initially it started d/loading but some time later the d/load speed > reduced to 0. It is possible to wait further, and after some more time > it will receive some more bytes/kilobytes/packets and stall again. Overall > progress is nearing zero. I looked at the log. I see download commence because the packets received of 1562 bytes length. So within one second I see little over 200 packets so approx. 3Mbps which is not impressive but I don't know what can be expected. Indeed after that it stalls and we only seem to receive small packets of 179 bytes that seem to end up in cfg80211_mgmt_rx. It could be that the hardware is somehow bogged and can not receive at higher modulations as management frames are transmitted at lower rates. The hardware will drop packets that are having FCS (aka. checksum) errors. The brcmsmac is missing some code to read fcs error count from hardware, but I will get back to you with a patch that we can use to confirm this. Regards, Arend > Thanks, > > /mjt -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2014-09-24 13:28 UTC|newest] Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-12-27 20:58 BCM4313 & brcmsmac & 3.12: only semi-working? Michael Tokarev 2013-12-28 9:42 ` Arend van Spriel 2013-12-28 12:24 ` Michael Tokarev 2014-01-14 8:59 ` Michael Tokarev 2014-01-14 9:30 ` Nikita N. 2014-02-10 19:16 ` Michael Tokarev 2014-04-19 11:42 ` Michael Tokarev 2014-08-26 5:13 ` Michael Tokarev 2014-08-26 14:56 ` Arend van Spriel 2014-08-26 14:56 ` Arend van Spriel 2014-08-26 16:15 ` Michael Tokarev 2014-08-26 21:37 ` Arend van Spriel 2014-08-27 10:02 ` Michael Tokarev 2014-08-27 15:27 ` Arend van Spriel 2014-09-15 8:03 ` Arend van Spriel 2014-09-21 15:30 ` Michael Tokarev 2014-09-23 10:04 ` Michael Tokarev 2014-09-23 12:47 ` Arend van Spriel 2014-09-23 13:44 ` Seth Forshee 2014-09-23 13:44 ` Seth Forshee 2014-09-23 13:50 ` Arend van Spriel 2014-09-23 13:50 ` Arend van Spriel 2014-09-23 14:25 ` Michael Tokarev 2014-09-23 14:28 ` Michael Tokarev 2014-09-23 14:31 ` Seth Forshee 2014-09-23 16:02 ` Michael Tokarev 2014-09-23 16:02 ` Michael Tokarev 2014-09-23 17:35 ` Arend van Spriel 2014-09-23 18:10 ` Michael Tokarev 2014-09-24 13:28 ` Arend van Spriel [this message] 2014-09-24 13:28 ` Arend van Spriel 2014-09-24 14:51 ` Michael Tokarev 2014-09-24 14:51 ` Michael Tokarev 2014-09-26 14:26 ` Michael Tokarev 2014-09-26 14:42 ` Arend van Spriel 2014-09-26 15:20 ` Michael Tokarev 2014-09-26 15:20 ` Michael Tokarev 2014-09-29 13:44 ` Arend van Spriel 2014-09-29 19:40 ` Maximilian Engelhardt 2014-09-30 10:06 ` Arend van Spriel 2014-10-08 22:19 ` Maximilian Engelhardt 2014-10-09 7:52 ` Arend van Spriel 2014-10-09 8:21 ` Rafał Miłecki 2014-11-17 22:36 ` Maximilian Engelhardt 2014-11-19 9:04 ` Michael Tokarev 2014-11-19 17:54 ` Arend van Spriel 2014-11-19 19:58 ` Michael Tokarev 2014-11-19 21:00 ` Michael Tokarev 2014-11-23 9:43 ` Arend van Spriel 2014-11-26 9:52 ` Michael Tokarev 2014-11-30 12:04 ` Arend van Spriel 2014-11-30 12:04 ` Arend van Spriel 2014-12-02 21:40 ` Michael Tokarev 2014-12-02 21:40 ` Michael Tokarev 2014-12-03 12:43 ` Arend van Spriel 2014-12-16 16:51 ` Arend van Spriel 2014-12-21 9:58 ` Michael Tokarev 2014-12-21 9:58 ` Michael Tokarev 2014-12-21 10:12 ` Arend van Spriel 2014-12-21 10:12 ` Arend van Spriel 2014-12-21 10:27 ` Michael Tokarev 2014-12-21 11:38 ` Arend van Spriel 2014-12-21 14:08 ` Maximilian Engelhardt 2014-12-21 14:08 ` Maximilian Engelhardt 2014-12-21 14:13 ` Arend van Spriel 2014-12-21 14:24 ` Maximilian Engelhardt 2014-12-21 15:03 ` Arend van Spriel 2014-12-21 17:34 ` Maximilian Engelhardt 2015-03-09 20:54 ` Daniel Glöckner 2015-03-09 20:54 ` Daniel Glöckner 2015-03-10 21:27 ` Arend van Spriel 2016-03-14 16:41 ` Daniel Glöckner [not found] ` <54969A46.8000807@msgid.tls.msk.ru> 2014-12-21 10:17 ` Arend van Spriel 2014-12-01 22:06 ` Maximilian Engelhardt 2014-11-19 13:46 ` Arend van Spriel 2014-11-19 13:49 ` Arend van Spriel 2014-11-19 13:49 ` Arend van Spriel 2020-08-24 3:44 Sébastien Le Preste De Vauban
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