From patchwork Thu Feb 9 11:06:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shayne Chen X-Patchwork-Id: 652332 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 0C5B5C61DA4 for ; Thu, 9 Feb 2023 11:07:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229868AbjBILHY (ORCPT ); Thu, 9 Feb 2023 06:07:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35448 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229892AbjBILHW (ORCPT ); Thu, 9 Feb 2023 06:07:22 -0500 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 751C512867 for ; Thu, 9 Feb 2023 03:07:18 -0800 (PST) X-UUID: e76f2064a86911ed945fc101203acc17-20230209 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=VPkZSELNWhl1DucR6ZYjynm+OOU6VxGRQyu4+mAsdxg=; b=MupSM6y9LUQNM7LiCaMpWQVfgoEMpw9DQF28qj0LUydk+sNTjy0TbMS/mNXPFKMLm1QQPCBC1Bp0z0Glm9mBCzIY3pZeNoHNNzPgxua47CbUrk1S4S1ixFWVahkHi8wWqLBalYRyNDOp8wlJtkjsY21vxoLkpLItjtFgliZ5kUQ=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.19, REQID:e099f70a-951a-49b2-8f66-622d30db1772, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:95 X-CID-INFO: VERSION:1.1.19, REQID:e099f70a-951a-49b2-8f66-622d30db1772, IP:0, URL :0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTION :quarantine,TS:95 X-CID-META: VersionHash:885ddb2, CLOUDID:beba668e-8530-4eff-9f77-222cf6e2895b, B ulkID:230209190715K2ENUBV1,BulkQuantity:0,Recheck:0,SF:29|28|17|19|48,TC:n il,Content:0,EDM:-3,IP:nil,URL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OS I:0,OSA:0,AV:0 X-CID-BVR: 0 X-UUID: e76f2064a86911ed945fc101203acc17-20230209 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 639321512; Thu, 09 Feb 2023 19:07:12 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.194) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Thu, 9 Feb 2023 19:07:11 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Thu, 9 Feb 2023 19:07:11 +0800 From: Shayne Chen To: linux-wireless CC: Johannes Berg , Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Evelyn Tsai , linux-mediatek , Shayne Chen Subject: [PATCH] wifi: mac80211: make rate u32 in sta_set_rate_info_rx() Date: Thu, 9 Feb 2023 19:06:59 +0800 Message-ID: <20230209110659.25447-1-shayne.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org The value of last_rate in ieee80211_sta_rx_stats is degraded from u32 to u16 after being assigned to rate variable, which causes information loss in STA_STATS_FIELD_TYPE and later bitfields. Signed-off-by: Shayne Chen Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: AngeloGioacchino Del Regno --- net/mac80211/sta_info.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 27c737fe7fb8..bd532d3f925d 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -2418,7 +2418,7 @@ static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) { - u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); + u32 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); if (rate == STA_STATS_RATE_INVALID) return -EINVAL;