From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0C03C433F5 for ; Fri, 1 Oct 2021 06:52:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 95AEB61242 for ; Fri, 1 Oct 2021 06:52:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352322AbhJAGxp (ORCPT ); Fri, 1 Oct 2021 02:53:45 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:25955 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231165AbhJAGxo (ORCPT ); Fri, 1 Oct 2021 02:53:44 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1633071121; h=Content-Transfer-Encoding: Content-Type: MIME-Version: Message-ID: In-Reply-To: Date: References: Subject: Cc: To: From: Sender; bh=A560NsXHW6B8ujWoHcz5zvVrbSQFM2oKjGFFxzubltU=; b=OmeZaNN+jdNXiqRcy0H+QsoT4XtU1xkDozoDX41smwk3xIfzOgt9MvztxQEZjOKiSQ3/ly5d M+OieiIohMD1mVaSprc6Yp/LfzNrETQmb4H3jH9OHIm1Bo9crqmUtOLHVAPx86RvrQliDIeD DhiSfOTND0Gx0AVxtxLwyp0qVco= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI3YTAwOSIsICJsaW51eC13aXJlbGVzc0B2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-east-1.postgun.com with SMTP id 6156b00c63b1f18658364da1 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 01 Oct 2021 06:51:56 GMT Sender: kvalo=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id E7349C43460; Fri, 1 Oct 2021 06:51:55 +0000 (UTC) Received: from tynnyri.adurom.net (tynnyri.adurom.net [51.15.11.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: kvalo) by smtp.codeaurora.org (Postfix) with ESMTPSA id A707DC4338F; Fri, 1 Oct 2021 06:51:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org A707DC4338F Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org From: Kalle Valo To: Petr Pisar Cc: linux-wireless@vger.kernel.org Subject: Re: ath9 stopped transmitting multicast frames in Linux 5.14.0 References: Date: Fri, 01 Oct 2021 09:51:51 +0300 In-Reply-To: (Petr Pisar's message of "Sat, 25 Sep 2021 09:07:19 +0200") Message-ID: <87h7e15jaw.fsf@tynnyri.adurom.net> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Petr Pisar writes: > V=C2=A0Sat, Sep 04, 2021 at 08:20:57PM +0200,=C2=A0Petr Pisar napsal(a): >> Hello, >>=20 >> after upgrading Linux from 5.13.13 to 5.14.0 on my router with this wire= less >> device: >>=20 >> 03:00.0 Network controller [0280]: Qualcomm Atheros AR93xx Wireless Netw= ork Adapter [168c:0030] (rev 01) >> Subsystem: Qualcomm Atheros AR93xx Wireless Network Adapter [168= c:3116] >> Flags: bus master, fast devsel, latency 0, IRQ 18 >> Memory at 81200000 (64-bit, non-prefetchable) [size=3D128K] >> Expansion ROM at 81220000 [disabled] [size=3D64K] >> Capabilities: [40] Power Management version 3 >> Capabilities: [50] MSI: Enable- Count=3D1/4 Maskable+ 64bit+ >> Capabilities: [70] Express Endpoint, MSI 00 >> Capabilities: [100] Advanced Error Reporting >> Capabilities: [140] Virtual Channel >> Capabilities: [300] Device Serial Number 00-00-00-00-00-00-00-00 >> Kernel driver in use: ath9k >> Kernel modules: ath9k >>=20 >> which works as a WiFi accesspoint, I noticed that WiFi clients cannot us= e IPv6 >> anymore. The problem is that the router cannot translate an IPv6 address= of >> the client to a MAC address. The reason is that IPv6 multicast packets u= sed by >> ICMPv6 neighbour discovery protocol do not reach the clients. In other w= ords >> the ath9k-driven device stopped transmitting multicast frames. > > The same observation was reported here by Felix Fietkau in "[PATCH] Revert > "mac80211: do not use low data rates for data frames with no ack flag"" > with a = proposal to > revert the offending d333322361e7a099dc74df2498d3fa5fde5c4fa7 commit. Very good, thanks for the followup. --=20 https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatc= hes