From patchwork Wed Jun 14 09:41:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 692986 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 32769EB64DA for ; Wed, 14 Jun 2023 09:45:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235955AbjFNJpd (ORCPT ); Wed, 14 Jun 2023 05:45:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244332AbjFNJow (ORCPT ); Wed, 14 Jun 2023 05:44:52 -0400 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63322210A for ; Wed, 14 Jun 2023 02:44:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1686735840; x=1718271840; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8q9707cVDXua91kBBhuFJhXIcCmDI4MLuotMj/Gu2iw=; b=DAo91xqTtg0DCxp58xalSnbQCalsjdXfNo/kvRBcdVkwkC5w5tZJ3HhY M1ps90OSo8moEBzwcRvCItzrKgx9DE+82ZDayZGcfmzSsHI/ZddHTfC/m Aj5y1NLvro17TAB3A9N0c/wRrSQaAzWf3HAaChjd0Whg/UJN2tjwb+O/l zNJE+cCdgDwO4DKsOG1zVwDoXHpGbD6P+N+1fBKee5r8OsKSejv+/1Wi2 OyRToQI6RvJW7wRE7FzRndNQkGoG7xtdNSwPRIRVLpExZafxOd8BfHO0X Iyg5+vbdwAfqRMq4/DpmfCvA2D0YnuLoYWFtIBkL0q54NtUATWMr/2p0h Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10740"; a="361049937" X-IronPort-AV: E=Sophos;i="6.00,242,1681196400"; d="scan'208";a="361049937" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2023 02:42:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10740"; a="711989930" X-IronPort-AV: E=Sophos;i="6.00,242,1681196400"; d="scan'208";a="711989930" Received: from basharil-mobl.ger.corp.intel.com (HELO ggreenma-mobl2.lan) ([10.214.203.45]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2023 02:42:39 -0700 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Anjaneyulu , Gregory Greenman Subject: [PATCH 20/20] wifi: iwlwifi: add a few rate index validity checks Date: Wed, 14 Jun 2023 12:41:37 +0300 Message-Id: <20230614123447.79f16b3aef32.If1137f894775d6d07b78cbf3a6163ffce6399507@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230614094137.379897-1-gregory.greenman@intel.com> References: <20230614094137.379897-1-gregory.greenman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Anjaneyulu Validate index before access iwl_rate_mcs to keep rate->index inside the valid boundaries. Use MCS_0_INDEX if index is less than MCS_0_INDEX and MCS_9_INDEX if index is greater then MCS_9_INDEX. Signed-off-by: Anjaneyulu Signed-off-by: Gregory Greenman --- drivers/net/wireless/intel/iwlwifi/dvm/rs.c | 9 ++++++--- drivers/net/wireless/intel/iwlwifi/mvm/rs.c | 11 +++++++---- 2 files changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/rs.c b/drivers/net/wireless/intel/iwlwifi/dvm/rs.c index 687c906a9d72..4b1f006c105b 100644 --- a/drivers/net/wireless/intel/iwlwifi/dvm/rs.c +++ b/drivers/net/wireless/intel/iwlwifi/dvm/rs.c @@ -2,7 +2,7 @@ /****************************************************************************** * * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. - * Copyright (C) 2019 - 2020, 2022 Intel Corporation + * Copyright (C) 2019 - 2020, 2022 - 2023 Intel Corporation *****************************************************************************/ #include #include @@ -125,7 +125,7 @@ static int iwl_hwrate_to_plcp_idx(u32 rate_n_flags) return idx; } - return -1; + return IWL_RATE_INVALID; } static void rs_rate_scale_perform(struct iwl_priv *priv, @@ -3146,7 +3146,10 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file, for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { index = iwl_hwrate_to_plcp_idx( le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags)); - if (is_legacy(tbl->lq_type)) { + if (index == IWL_RATE_INVALID) { + desc += sprintf(buff + desc, " rate[%d] 0x%X invalid rate\n", + i, le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags)); + } else if (is_legacy(tbl->lq_type)) { desc += sprintf(buff+desc, " rate[%d] 0x%X %smbps\n", i, le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags), iwl_rate_mcs[index].mbps); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c index 23266d0c9ce4..74fbc4582453 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /****************************************************************************** * - * Copyright(c) 2005 - 2014, 2018 - 2022 Intel Corporation. All rights reserved. + * Copyright(c) 2005 - 2014, 2018 - 2023 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH *****************************************************************************/ @@ -1070,10 +1070,13 @@ static void rs_get_lower_rate_down_column(struct iwl_lq_sta *lq_sta, rate->bw = RATE_MCS_CHAN_WIDTH_20; - WARN_ON_ONCE(rate->index < IWL_RATE_MCS_0_INDEX || - rate->index > IWL_RATE_MCS_9_INDEX); + if (WARN_ON_ONCE(rate->index < IWL_RATE_MCS_0_INDEX)) + rate->index = rs_ht_to_legacy[IWL_RATE_MCS_0_INDEX]; + else if (WARN_ON_ONCE(rate->index > IWL_RATE_MCS_9_INDEX)) + rate->index = rs_ht_to_legacy[IWL_RATE_MCS_9_INDEX]; + else + rate->index = rs_ht_to_legacy[rate->index]; - rate->index = rs_ht_to_legacy[rate->index]; rate->ldpc = false; } else { /* Downgrade to SISO with same MCS if in MIMO */