From patchwork Mon May 16 19:36:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 573383 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 85DD6C433EF for ; Mon, 16 May 2022 19:45:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346088AbiEPTpd (ORCPT ); Mon, 16 May 2022 15:45:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35612 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346111AbiEPToi (ORCPT ); Mon, 16 May 2022 15:44:38 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3A08403F2; Mon, 16 May 2022 12:43:03 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id B9725B815F8; Mon, 16 May 2022 19:43:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2704EC385AA; Mon, 16 May 2022 19:42:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652730180; bh=6PHLkbO2Qv6DIi06nCR/kXNEUJQD4z+5jPF8ugPX/Fk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EpcsS7BMOPUz+s2fhi+EDp5nAFK9RKFUPxYanvYF9lAdyIR24NbUFvbjPvFTLIMeX 7wwOT3OAVix5lMVppBfFK2+SLAtg51BRTbh6gq6fjgCy9wCrXk/k/8fxrtJIlv9mVV LJufmGvBZjTi8EQLWH+qJI9md6/tBss/y371Nqfw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Manikanta Pubbisetty , Johannes Berg , Sasha Levin Subject: [PATCH 5.4 03/43] mac80211: Reset MBSSID parameters upon connection Date: Mon, 16 May 2022 21:36:14 +0200 Message-Id: <20220516193614.818226367@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516193614.714657361@linuxfoundation.org> References: <20220516193614.714657361@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Manikanta Pubbisetty [ Upstream commit 86af062f40a73bf63321694e6bf637144f0383fe ] Currently MBSSID parameters in struct ieee80211_bss_conf are not reset upon connection. This could be problematic with some drivers in a scenario where the device first connects to a non-transmit BSS and then connects to a transmit BSS of a Multi BSS AP. The MBSSID parameters which are set after connecting to a non-transmit BSS will not be reset and the same parameters will be passed on to the driver during the subsequent connection to a transmit BSS of a Multi BSS AP. For example, firmware running on the ath11k device uses the Multi BSS data for tracking the beacon of a non-transmit BSS and reports the driver when there is a beacon miss. If we do not reset the MBSSID parameters during the subsequent connection to a transmit BSS, then the driver would have wrong MBSSID data and FW would be looking for an incorrect BSSID in the MBSSID beacon of a Multi BSS AP and reports beacon loss leading to an unstable connection. Reset the MBSSID parameters upon every connection to solve this problem. Fixes: 78ac51f81532 ("mac80211: support multi-bssid") Signed-off-by: Manikanta Pubbisetty Link: https://lore.kernel.org/r/20220428052744.27040-1-quic_mpubbise@quicinc.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/mlme.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index ad00f31e2002..5415e566e09d 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -3406,6 +3406,12 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, cbss->transmitted_bss->bssid); bss_conf->bssid_indicator = cbss->max_bssid_indicator; bss_conf->bssid_index = cbss->bssid_index; + } else { + bss_conf->nontransmitted = false; + memset(bss_conf->transmitter_bssid, 0, + sizeof(bss_conf->transmitter_bssid)); + bss_conf->bssid_indicator = 0; + bss_conf->bssid_index = 0; } /*