From patchwork Wed Sep 20 18:25:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 13393172 X-Patchwork-Delegate: johannes@sipsolutions.net 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 88F74C04FE4 for ; Wed, 20 Sep 2023 18:26:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229826AbjITS0c (ORCPT ); Wed, 20 Sep 2023 14:26:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229838AbjITS0b (ORCPT ); Wed, 20 Sep 2023 14:26:31 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62F47C6 for ; Wed, 20 Sep 2023 11:26:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695234385; x=1726770385; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=awU3IC5lzIZEWuNaKximpASNqq2AJJgi98GItNMgIzg=; b=c8qvEu+cW2ZdF9h20bQbUMMKtLaISD0Evj2Cpfs5oxHlRE2gAWSvW1xr bML4LM+WThCH+/2RpPB52HdD6SsCefeFZU6aKJ1mQ8dZ+ry1GbNkfegb4 XJNkIsKtdaw06P7iaX0dQvCqNrnPR6IWBMTn+GUlbJFYbAEv++kG/gMfr 2YxNSUwh7NS66nuFgmHwR8IcMtPOTRwTjnoT4apTV0FC/v3IY5/yv+efZ JlKl24D2H9ZrDGTiYestWNxpU3xw67FDB1UPqT/pzL3foHAY0Gn3xCVsz bzNffdRjEYiNTVTlVHcIXpUR9xjO795SaiJbrS6uJ4mAqUZCDcXcxY/Vb g==; X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="360556321" X-IronPort-AV: E=Sophos;i="6.03,162,1694761200"; d="scan'208";a="360556321" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2023 11:26:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="723424222" X-IronPort-AV: E=Sophos;i="6.03,162,1694761200"; d="scan'208";a="723424222" Received: from dmani-mobl1.ger.corp.intel.com (HELO ggreenma-mobl2.lan) ([10.214.217.100]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2023 11:26:22 -0700 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Johannes Berg , Gregory Greenman Subject: [PATCH v2 05/18] wifi: mac80211: allow for_each_sta_active_link() under RCU Date: Wed, 20 Sep 2023 21:25:16 +0300 Message-Id: <20230920211508.73c3e04985f4.I52ef396d693e0e381a73eade06850137d8900948@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230920182529.659973-1-gregory.greenman@intel.com> References: <20230920182529.659973-1-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