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Thu, 29 Aug 2024 07:53:04 GMT Received: from Z2-SFF-G9-MQ.ap.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 29 Aug 2024 00:53:02 -0700 From: Miaoqing Pan To: CC: , , , Miaoqing Pan Subject: [PATCH] wifi: ath11k: fix the stack frame size warning in ath11k_vif_wow_set_wakeups Date: Thu, 29 Aug 2024 15:52:53 +0800 Message-ID: <20240829075253.657667-1-quic_miaoqing@quicinc.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: Kaa24pcrp6a5LxP8LX4uLf2IV7IhWcGO X-Proofpoint-ORIG-GUID: Kaa24pcrp6a5LxP8LX4uLf2IV7IhWcGO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-29_02,2024-08-29_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 adultscore=0 malwarescore=0 suspectscore=0 bulkscore=0 clxscore=1011 mlxlogscore=999 mlxscore=0 phishscore=0 lowpriorityscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408290056 Fix the following W=1 kernel build warning: drivers/net/wireless/ath/ath11k/wow.c: In function ‘ath11k_vif_wow_set_wakeups’: drivers/net/wireless/ath/ath11k/wow.c:461:1: warning: the frame size of 1352 bytes is larger than 1024 bytes [-Wframe-larger-than=] Remove the nonessential variable 'struct cfg80211_pkt_pattern old_pattern' by relocating bitmask to bytemask conversion into ath11k_wow_convert_8023_to_80211(). Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04358-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1 Signed-off-by: Miaoqing Pan Acked-by: Jeff Johnson --- drivers/net/wireless/ath/ath11k/wow.c | 39 ++++++++++++++------------- 1 file changed, 21 insertions(+), 18 deletions(-) diff --git a/drivers/net/wireless/ath/ath11k/wow.c b/drivers/net/wireless/ath/ath11k/wow.c index 99d8ba45a75b..827085a926b2 100644 --- a/drivers/net/wireless/ath/ath11k/wow.c +++ b/drivers/net/wireless/ath/ath11k/wow.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: BSD-3-Clause-Clear /* * Copyright (c) 2020 The Linux Foundation. All rights reserved. - * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved. */ #include @@ -155,6 +155,7 @@ static void ath11k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new, u8 hdr_8023_bit_mask[ETH_HLEN] = {}; u8 hdr_80211_pattern[WOW_HDR_LEN] = {}; u8 hdr_80211_bit_mask[WOW_HDR_LEN] = {}; + u8 bytemask[WOW_MAX_PATTERN_SIZE] = {}; int total_len = old->pkt_offset + old->pattern_len; int hdr_80211_end_offset; @@ -172,11 +173,17 @@ static void ath11k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new, struct rfc1042_hdr *new_rfc_mask = (struct rfc1042_hdr *)(hdr_80211_bit_mask + hdr_len); int rfc_len = sizeof(*new_rfc_pattern); + int i; + + /* convert bitmask to bytemask */ + for (i = 0; i < old->pattern_len; i++) + if (old->mask[i / 8] & BIT(i % 8)) + bytemask[i] = 0xff; memcpy(hdr_8023_pattern + old->pkt_offset, old->pattern, ETH_HLEN - old->pkt_offset); memcpy(hdr_8023_bit_mask + old->pkt_offset, - old->mask, ETH_HLEN - old->pkt_offset); + bytemask, ETH_HLEN - old->pkt_offset); /* Copy destination address */ memcpy(new_hdr_pattern->addr1, old_hdr_pattern->h_dest, ETH_ALEN); @@ -232,7 +239,7 @@ static void ath11k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new, (void *)old->pattern + ETH_HLEN - old->pkt_offset, total_len - ETH_HLEN); memcpy((u8 *)new->mask + new->pattern_len, - (void *)old->mask + ETH_HLEN - old->pkt_offset, + bytemask + ETH_HLEN - old->pkt_offset, total_len - ETH_HLEN); new->pattern_len += total_len - ETH_HLEN; @@ -393,35 +400,31 @@ static int ath11k_vif_wow_set_wakeups(struct ath11k_vif *arvif, } for (i = 0; i < wowlan->n_patterns; i++) { - u8 bitmask[WOW_MAX_PATTERN_SIZE] = {}; u8 ath_pattern[WOW_MAX_PATTERN_SIZE] = {}; u8 ath_bitmask[WOW_MAX_PATTERN_SIZE] = {}; struct cfg80211_pkt_pattern new_pattern = {}; - struct cfg80211_pkt_pattern old_pattern = patterns[i]; - int j; new_pattern.pattern = ath_pattern; new_pattern.mask = ath_bitmask; if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE) continue; - /* convert bytemask to bitmask */ - for (j = 0; j < patterns[i].pattern_len; j++) - if (patterns[i].mask[j / 8] & BIT(j % 8)) - bitmask[j] = 0xff; - old_pattern.mask = bitmask; if (ar->wmi->wmi_ab->wlan_resource_config.rx_decap_mode == ATH11K_HW_TXRX_NATIVE_WIFI) { if (patterns[i].pkt_offset < ETH_HLEN) { - u8 pattern_ext[WOW_MAX_PATTERN_SIZE] = {}; - - memcpy(pattern_ext, old_pattern.pattern, - old_pattern.pattern_len); - old_pattern.pattern = pattern_ext; ath11k_wow_convert_8023_to_80211(&new_pattern, - &old_pattern); + &patterns[i]); } else { - new_pattern = old_pattern; + int j; + + new_pattern = patterns[i]; + new_pattern.mask = ath_bitmask; + + /* convert bitmask to bytemask */ + for (j = 0; j < patterns[i].pattern_len; j++) + if (patterns[i].mask[j / 8] & BIT(j % 8)) + ath_bitmask[j] = 0xff; + new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN; } }