From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ie0-x230.google.com (mail-ie0-x230.google.com [IPv6:2607:f8b0:4001:c03::230]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 3FA9221F13F for ; Thu, 16 Jan 2014 07:46:05 -0800 (PST) Received: by mail-ie0-f176.google.com with SMTP id lx4so3963471iec.21 for ; Thu, 16 Jan 2014 07:46:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=tHmsSk9LvwW3GwlJSBSY2DrPKNmGlP9c1pbZDv1HvZc=; b=zE05eJiLmv+H8rl0xj+RGvbWKQlG8B2/QxeoDrpwNOEKbd9UudmNuZQzkXx78zMAF/ NHVS77tHyVsI6tgz94r5CEJF1GQ7eNz+RX94ZJ3e+Z8sstux79AHFueXVj6L4tPe8LTr j/qApQlR8qSz97QlB+5WMcmH6ulS3znCWrKAHhH8xl0f9Yxi0wkSnI33muIyPIlTUokA si+/wB5YR6z2fYK1mp2q0hSzh/6lmT6tlnR7NqQmbJIJC6KQQkXjvO33E8/AB7yszhdT a3WnT1thwcy5qIebERKRyJXHeQXMWgKKHlus1ZOoAlYsQuJdM8+qD9dOLhe8mIi/agUT yljg== MIME-Version: 1.0 X-Received: by 10.43.60.139 with SMTP id ws11mr8736409icb.12.1389887164553; Thu, 16 Jan 2014 07:46:04 -0800 (PST) Received: by 10.64.248.70 with HTTP; Thu, 16 Jan 2014 07:46:04 -0800 (PST) In-Reply-To: <52D7FD04.2010608@gmail.com> References: <52D7FD04.2010608@gmail.com> Date: Thu, 16 Jan 2014 16:46:04 +0100 Message-ID: From: Aaron Wood To: Robert Bradley Content-Type: multipart/alternative; boundary=bcaec51a8946b89f9204f0185222 Cc: cerowrt-devel Subject: Re: [Cerowrt-devel] Managed to break 802.11n (on a 3800) X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Jan 2014 15:46:11 -0000 --bcaec51a8946b89f9204f0185222 Content-Type: text/plain; charset=ISO-8859-1 They help provide a good counterpoint, thanks! Interesting that yours don't list the pci path (as mine now do after the reset): config wifi-device 'radio1' option type 'mac80211' option channel '36' option hwmode '11na' option path 'pci0000:00/0000:00:12.0' option htmode 'HT40+' list ht_capab 'SHORT-GI-40' list ht_capab 'TX-STBC' list ht_capab 'RX-STBC1' list ht_capab 'DSSS_CCK-40' option txpower '17' option country 'FR' -Aaron On Thu, Jan 16, 2014 at 4:38 PM, Robert Bradley wrote: > On 16/01/2014 15:03, Aaron Wood wrote: > > All, > > I'm noting this here in case anyone is interested. After I write this > up, I'm going to start from scratch on the configuration, and factory-reset > the router. > > ===== > > The 5GHz radio on my 3800 seems to be in a very odd state. I'm not > quire sure what state it's in, but it seems to be only doing HT20 1x1. And > in a fairly broken manner at that. > > > > > > And here are radio blocks from the current /etc/config/wireless: > > config wifi-device 'radio1' > option type 'mac80211' > option macaddr '28:c6:8e:bb:9a:49' > list ht_capab 'SHORT-GI-40' > list ht_capab 'TX-STBC' > list ht_capab 'RX-STBC1' > list ht_capab 'DSSS_CCK-40' > option txpower '17' > option distance '25' > option channel '48' > option country 'US' > > > That's interesting, since it's missing a few configuration options and > seems to be still using the US country code for the 5 GHz interface. For > what it's worth, my router's configuration looks like this (with the MAC > address changed to match your configuration): > > > config wifi-device 'radio1' > option type 'mac80211' > option channel '36' > option hwmode '11na' > > option macaddr '28:c6:8e:bb:9a:49' > list ht_capab 'SHORT-GI-40' > list ht_capab 'TX-STBC' > list ht_capab 'RX-STBC1' > list ht_capab 'DSSS_CCK-40' > option disabled '0' > option txpower '17' > option country 'GB' > option htmode 'HT40+' > > I'm using channel 36 and HT40+ here at 17 dBm. This is also from a > UK-based router, so you'll probably want to change the country code from GB > to FR. I'm seeing about 270 Mb/s using Intel wireless (4965AGN) and > Windows 7 about 2.5 m away from the router with those settings. > > > config wifi-device 'radio0' > option type 'mac80211' > option hwmode '11ng' > option macaddr '28:c6:8e:bb:9a:47' > option htmode 'HT20' > list ht_capab 'SHORT-GI-40' > list ht_capab 'TX-STBC' > list ht_capab 'RX-STBC1' > list ht_capab 'DSSS_CCK-40' > option txpower '26' > option country 'FR' > option distance '15' > option channel 'auto' > > > My settings for the 2.4 GHz side (deliberately limited to HT20 to avoid > interference): > > > config wifi-device 'radio0' > option type 'mac80211' > option hwmode '11ng' > option macaddr '28:c6:8e:bb:9a:47' > option htmode 'HT20' > list ht_capab 'SHORT-GI-40' > list ht_capab 'TX-STBC' > list ht_capab 'RX-STBC1' > list ht_capab 'DSSS_CCK-40' > option disabled '0' > option channel '1' > option country 'GB' > option txpower '20' > > This time I'm using channel 1 at 20 dBm. In both of these blocks I'm > leaving the distance option unspecified. > > Hope this helps a bit! > > -- > Robert Bradley > > > _______________________________________________ > Cerowrt-devel mailing list > Cerowrt-devel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cerowrt-devel > > --bcaec51a8946b89f9204f0185222 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
They help provide a good counterpoint, thanks! =A0Interest= ing that yours don't list the pci path (as mine now do after the reset)= :

config wifi-device 'radio1'
option type 'mac80211&#= 39;
option channel '= ;36'
optio= n hwmode '11na'
option path 'pci0000:00/0000:00:12.0'
option htmode '= HT40+'
lis= t ht_capab 'SHORT-GI-40'
list ht_capab 'TX-STBC'
list ht_capab '= RX-STBC1'
= list ht_capab 'DSSS_CCK-40'
option txpower '17'
option country '= ;FR'

-Aaron


On Thu, Jan 16, 2014 at 4:38 P= M, Robert Bradley <robert.bradley1@gmail.com> wrote:=
=20 =20 =20
On 16/01/2014 15:03, Aaron Wood wrote:
=20
All,

I'm noting this here in case anyone is interested. =A0After I write this up, I'm going to start from scratch on the configuration, and factory-reset the router.

=3D=3D=3D=3D=3D

The 5GHz radio on my 3800 seems to be in a very odd state. =A0I'm not quire sure what state it's in, but it seems to= be only doing HT20 1x1. =A0And in a fairly broken manner at that.

<snip>


And here are radio blocks from the current /etc/config/wireless:

config wifi-device 'radio1'
option type 'mac80211'
option macaddr '28:c6:8e:bb:9a:49'
list ht_capab 'SHORT-GI-40'
list ht_capab 'TX-STBC'
list ht_capab 'RX-STBC1'
list ht_capab 'DSSS_CCK-40'
option txpower '17'
option distance '25'
option channel '48'
option country 'US'

That's interesting, since it's missing a few configuration opti= ons and seems to be still using the US country code for the 5 GHz interface.=A0 For what it's worth, my router's configuration lo= oks like this (with the MAC address changed to match your configuration):


config wifi-device 'radio1'
=A0=A0=A0=A0=A0=A0=A0 option type 'mac80211'
=A0=A0=A0=A0=A0=A0=A0 option channel '36'
=A0=A0=A0=A0=A0=A0=A0 option hwmode '11na'
=A0=A0=A0=A0=A0=A0=A0 option macaddr '28:c6:8e:bb:9a:49'
=A0=A0=A0=A0=A0=A0=A0 list ht_capab 'SHORT-GI-40'
=A0=A0=A0=A0=A0=A0=A0 list ht_capab 'TX-STBC'
=A0=A0=A0=A0=A0=A0=A0 list ht_capab 'RX-STBC1'
=A0=A0=A0=A0=A0=A0=A0 list ht_capab 'DSSS_CCK-40'
=A0=A0=A0=A0=A0=A0=A0 option disabled '0'
=A0=A0=A0=A0=A0=A0=A0 option txpower '17'
=A0=A0=A0=A0=A0=A0=A0 option country 'GB'
=A0=A0=A0=A0=A0=A0=A0 option htmode 'HT40+'

I'm using channel 36 and HT40+ here at 17 dBm.=A0 This is also from= a UK-based router, so you'll probably want to change the country code from GB to FR.=A0 I'm seeing about 270 Mb/s using Intel wireless (4965AGN) and Windows 7 about 2.5 m away from the router with those settings.


config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11ng'
option macaddr '28:c6:8e:bb:9a:47'
option htmode 'HT20'
list ht_capab 'SHORT-GI-40'
list ht_capab 'TX-STBC'
list ht_capab 'RX-STBC1'
list ht_capab 'DSSS_CCK-40'
option txpower '26'
option country 'FR'
option distance '15'
option channel 'auto'


My settings for the 2.4 GHz side (deliberately limited to HT20 to avoid interference):


config wifi-device 'radio0'
=A0=A0=A0=A0=A0=A0=A0 option type 'mac80211'
=A0=A0=A0=A0=A0=A0=A0 option hwmode '11ng'
=A0=A0=A0=A0=A0=A0=A0 option macaddr '28:c6:8e:bb:9a:47'
=A0=A0=A0=A0=A0=A0=A0 option htmode 'HT20'
=A0=A0=A0=A0=A0=A0=A0 list ht_capab 'SHORT-GI-40'
=A0=A0=A0=A0=A0=A0=A0 list ht_capab 'TX-STBC'
=A0=A0=A0=A0=A0=A0=A0 list ht_capab 'RX-STBC1'
=A0=A0=A0=A0=A0=A0=A0 list ht_capab 'DSSS_CCK-40'
=A0=A0=A0=A0=A0=A0=A0 option disabled '0'
=A0=A0=A0=A0=A0=A0=A0 option channel '1'
=A0=A0=A0=A0=A0=A0=A0 option country 'GB'
=A0=A0=A0=A0=A0=A0=A0 option txpower '20'

This time I'm using channel 1 at 20 dBm.=A0 In both of these blocks I'm leaving the distance option unspecified.

Hope this helps a bit! 
--=20
Robert Bradley

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Cerowrt-devel@lists.= bufferbloat.net
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