From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 529F13B2A4 for ; Mon, 9 Jul 2018 08:55:06 -0400 (EDT) Received: from hms-beagle2.lan ([79.235.227.244]) by mail.gmx.com (mrgmx001 [212.227.17.190]) with ESMTPSA (Nemesis) id 0LbMmA-1gMJpN3vOE-00kwnf; Mon, 09 Jul 2018 14:55:04 +0200 Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.4 \(3445.8.2\)) From: Sebastian Moeller In-Reply-To: Date: Mon, 9 Jul 2018 14:55:02 +0200 Cc: Jonathan Morton , Make-Wifi-fast Content-Transfer-Encoding: quoted-printable Message-Id: <4BC1EFAB-5802-4525-B4A2-30553ADF370A@gmx.de> References: <9E7E043B-2373-46ED-B122-38A287422999@eventide.io> <87d0wu7rbg.fsf@toke.dk> <8A44F1D4-1EB8-4D46-85F9-00C7307FF2D4@heistp.net> <2EC1279B-76C6-48C0-AED4-E9C4A7D0F004@heistp.net> <874lhdeso1.fsf@toke.dk> <87fu0xd1o9.fsf@toke.dk> <663D9F58-3202-42CD-9BD5-3B415E77EE97@heistp.net> To: Pete Heist X-Mailer: Apple Mail (2.3445.8.2) X-Provags-ID: V03:K1:0GHkeInH02NYkJIfpKg4+63efGJ/YCNQzDTUW2ecUdjjh8cNeDU qQ4YX35XtQ87c6dRg0sMtELhcrjb4RKzaG9F8z156WH2yoQnuxUqnbvwLjLt22hfo8Huw9/ krzmrZBky2s6Len5oNQ+TI7zRSnPEi862jIbVNhrInSoVyuN+UkyKLPGj5QpiR0XiP+pzg/ kiid2cr1PgdXc+fbkxcdw== X-UI-Out-Filterresults: notjunk:1;V01:K0:B5unM8x4KnI=:44UOuH4QgdNwwxmQ7W7HbY eypajOkF2jMBUfe6GoYsr1dyNJD6mw/hXWMNAOxbmVEydAgZD0LS1zs6bgaAUzB7dM7XpZJXf rsbk6L/vr7m0YWbpm1YFqdTyAd0oJimn6gdnWNrm/ouxIuHmcIgAis8JuNQMHqjByEI50I5Lk fpsRN1VHTa3Z/ghH0s+podIJT/dfcPA2VBlz+4JsJi9ddc76Rgkb86PLD9UhAoa/wN6X1Rvym ROVBRLvoLuqq/9LxF/eRugIcqGILIkgoZcIfXrF+kp65f8ttAdlH9ls1FyCa23jTmbVpp4chV 2gTtmwk/rKq8M/8JQfO+0aqr1sDBEjCiYQcZB2G71PaQKcDx4b8+M/Kz9sli0lb6gj1EZF2ss Bt6HZwuKB52KwxYcgxo96sCCJo9VxBOvewdRyAhsrqXnRcaG/Pki9QfROb0szbkIFI/VVUrwf 9k6TD97FHg+MIs5oCLVysfz4u+lwDjK58U22boF3smdhA8+zwt4sM96TCd/RdQNVL6dh17Jvi FdtcKr/5LzAUC2W5wZcm3VQxTKf1DrmNCTkPKh7rBnSc30UnmGO1wCWCQ84bTiqt4xNC8bQsF JmUvm/jPlnWBT58f9XrPRhghkfZrgpr1Rf+LStXZPHbYcUQHQyt7l3gwx6PkxnzAy2uiSgcKL vDKxYDTqeGaUaBwc6CfE+JNEo0FK2dtT+5wl31tBGyYkgVgjBjPzpocGWE4DW6gioCsNbE8Kh yczTmUwMfLa3IRmGtj2v3dQhb8dMCD0ZiA0C38GUBgEv1ZbdgiE9YfZvzhz2oL8kU2ToldJWx NMhSshH Subject: Re: [Make-wifi-fast] mesh deployment with ath9k driver changes X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Jul 2018 12:55:06 -0000 Hi Pete, being ignorant on how one sets up a p2p bwifi backbone, I wonder wherher = qos-maps might be useful to effectively disable WMMon a link without = remapping the dscp field or tunneling the enduser IP psackets? See = https://patchwork.kernel.org/patch/3212651/ and hostapd.conf: # QoS Map Set configuration # # Comma delimited QoS Map Set in decimal values # (see IEEE Std 802.11-2012, 8.4.2.97) #=20 # format: # [,],... #=20 # There can be up to 21 optional DSCP Exceptions which are pairs of DSCP = Value # (0..63 or 255) and User Priority (0..7). This is followed by eight = DSCP Range # descriptions with DSCP Low Value and DSCP High Value pairs (0..63 or = 255) for # each UP starting from 0. If both low and high value are set to 255, = the # corresponding UP is not used. #=20 # default: not set = #qos_map_set=3D53,2,22,6,8,15,0,7,255,255,16,31,32,39,255,255,40,47,255,25= 5 You could simply use qos_map_set=3D0,63,255,255,255,255,255,255,255,255,255,255,255,255,255,255= to map all dscps to UP0... I have not played with this feature though, so it might not work at all = for your purpose. Best Regards Sebastian > On Jul 9, 2018, at 08:27, Pete Heist wrote: >=20 >=20 >> On Jul 9, 2018, at 7:17 AM, Jonathan Morton = wrote: >>=20 >>> On 9 Jul, 2018, at 5:20 am, Aaron Wood wrote: >>>=20 >>> Do the AP-to-AP links use the same packet scheduling as the = AP-to-STA links? (especially the prohibition on aggregation for VO, = which seems counter-productive on a backhaul link). >>=20 >> I believe they do, since they go through the same type of MAC grant = process. To avoid that, the AP would need to ignore the traffic class = when assigning backhaul packets to queues. >=20 > I=E2=80=99m also almost sure of that. However, since I set all DSCP = values to 0 in PREROUTING, most traffic going over the backhauls is now = best effort, and I haven=E2=80=99t been able to detect a change in ping = times to the APs. The change was made July 5 around 10am and, for = example, this is probably our most challenged AP: = https://www.drhleny.cz/smokeping/Cabin12.html >=20 > I still think making backhaul traffic best effort makes sense. In my = point-to-point tests, I sometimes do this using IPIP tunnels, so the = DSCP value of the inner packet is hidden from the WiFi stack, but the = value is still maintained after it passes through the tunnel. A drawback = of this is that the MTU is shortened by 20 bytes. >=20 > Tomorrow I=E2=80=99ll be setting up a 5GHz point-to-point backhaul = link for Cabin 28 (higher standard cabins), so I expect a significant = change there. > _______________________________________________ > Make-wifi-fast mailing list > Make-wifi-fast@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/make-wifi-fast