From patchwork Mon Sep 18 11:10:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 724390 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 76CFDCD37B0 for ; Mon, 18 Sep 2023 11:12:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241346AbjIRLMU (ORCPT ); Mon, 18 Sep 2023 07:12:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239738AbjIRLLq (ORCPT ); Mon, 18 Sep 2023 07:11:46 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E50B294 for ; Mon, 18 Sep 2023 04:11:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695035500; x=1726571500; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=awU3IC5lzIZEWuNaKximpASNqq2AJJgi98GItNMgIzg=; b=nCy9qke8DAW+QRoQSzBHmswRkiJoc12+sZVI33ZFfBuN6/HmZXIl7fmO xD/W65tUZaDH/kLBoaVGkVELLsvMT8AffL6cO/f3O1nyVLDHl0EJhrbuX YPBSE31w6GQgmJRwSblvBbdfidc7TdZo5j2VSZEhb76IWKl2Hi1IsjTRE s3HTbeSSBBkFjD9/ff6Kvgbbmhsg8vDJ1mFGT4KutqJJjX3P4q50Oj3H7 jAGUdcW51KewqCZH1SDIxN8/HYQPyc0HKjGYz1MVXvK0BHTtvzpW0tMtN vWzvfjy8udwYeS+OenPfbbXn8bY4XHnC8WnqIofWptRpkTDCMaMUnbezX g==; X-IronPort-AV: E=McAfee;i="6600,9927,10836"; a="378535748" X-IronPort-AV: E=Sophos;i="6.02,156,1688454000"; d="scan'208";a="378535748" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Sep 2023 04:11:32 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10836"; a="861025280" X-IronPort-AV: E=Sophos;i="6.02,156,1688454000"; d="scan'208";a="861025280" Received: from guyarad-mobl.ger.corp.intel.com (HELO ggreenma-mobl2.lan) ([10.214.215.14]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Sep 2023 04:11:30 -0700 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Johannes Berg , Gregory Greenman Subject: [PATCH 05/18] wifi: mac80211: allow for_each_sta_active_link() under RCU Date: Mon, 18 Sep 2023 14:10:50 +0300 Message-Id: <20230918140607.25b2a5c0fd63.I52ef396d693e0e381a73eade06850137d8900948@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230918111103.435195-1-gregory.greenman@intel.com> References: <20230918111103.435195-1-gregory.greenman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg Since we only use this to protect the dereference and with STA mutex, we can also allow this with just RCU. Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman --- include/net/mac80211.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 7aea4787e62b..be3d74942a4a 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2393,7 +2393,7 @@ static inline bool lockdep_sta_mutex_held(struct ieee80211_sta *pubsta) for (link_id = 0; link_id < ARRAY_SIZE((sta)->link); link_id++) \ if ((!(vif)->active_links || \ (vif)->active_links & BIT(link_id)) && \ - ((link_sta) = link_sta_dereference_protected(sta, link_id))) + ((link_sta) = link_sta_dereference_check(sta, link_id))) /** * enum sta_notify_cmd - sta notify command