From patchwork Mon May 10 16:39:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12248739 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 79086C43462 for ; Mon, 10 May 2021 16:39:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4DB3961155 for ; Mon, 10 May 2021 16:39:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231846AbhEJQkp (ORCPT ); Mon, 10 May 2021 12:40:45 -0400 Received: from mga17.intel.com ([192.55.52.151]:22532 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231651AbhEJQkc (ORCPT ); Mon, 10 May 2021 12:40:32 -0400 IronPort-SDR: 7OYs8G8xArhbUDZX7zp+ODoSh9bkTmSB7GY7s/4AOsY9PRf/qBNSFy9jqPHbteEl886BOoZFT9 zb7uLWBLvfkg== X-IronPort-AV: E=McAfee;i="6200,9189,9980"; a="179500301" X-IronPort-AV: E=Sophos;i="5.82,287,1613462400"; d="scan'208";a="179500301" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 May 2021 09:39:27 -0700 IronPort-SDR: p65HzWgv4Te22j5Xj7Jcc2LG18DRXYEzucKZGsaR4X1xNTa/p6FWDepGuCa5LMYfgtOSrKjqkq aIWL2WY0I/pg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,287,1613462400"; d="scan'208";a="536481102" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 10 May 2021 09:39:24 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 555991D2; Mon, 10 May 2021 19:39:45 +0300 (EEST) From: Andy Shevchenko To: "David S. Miller" , Flavio Suligoi , Lee Jones , Jesse Brandeburg , Andy Shevchenko , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jakub Kicinski , kernel test robot Subject: [PATCH net-next v3 4/5] net: pch_gbe: Use proper accessors to BE data in pch_ptp_match() Date: Mon, 10 May 2021 19:39:30 +0300 Message-Id: <20210510163931.42417-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210510163931.42417-1-andriy.shevchenko@linux.intel.com> References: <20210510163931.42417-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Sparse is not happy about handling of strict types in pch_ptp_match(): .../pch_gbe_main.c:158:33: warning: incorrect type in argument 2 (different base types) .../pch_gbe_main.c:158:33: expected unsigned short [usertype] uid_hi .../pch_gbe_main.c:158:33: got restricted __be16 [usertype] .../pch_gbe_main.c:158:45: warning: incorrect type in argument 3 (different base types) .../pch_gbe_main.c:158:45: expected unsigned int [usertype] uid_lo .../pch_gbe_main.c:158:45: got restricted __be32 [usertype] .../pch_gbe_main.c:158:56: warning: incorrect type in argument 4 (different base types) .../pch_gbe_main.c:158:56: expected unsigned short [usertype] seqid .../pch_gbe_main.c:158:56: got restricted __be16 [usertype] Fix that by switching to use proper accessors to BE data. Reported-by: kernel test robot Signed-off-by: Andy Shevchenko Tested-by: Flavio Suligoi --- .../ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 19 ++++++------------- 1 file changed, 6 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c index 7b224745bf3e..5e8acf76410d 100644 --- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c +++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c @@ -110,7 +110,7 @@ static int pch_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid) { u8 *data = skb->data; unsigned int offset; - u16 *hi, *id; + u16 hi, id; u32 lo; if (ptp_classify_raw(skb) == PTP_CLASS_NONE) @@ -121,14 +121,11 @@ static int pch_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid) if (skb->len < offset + OFF_PTP_SEQUENCE_ID + sizeof(seqid)) return 0; - hi = (u16 *)(data + offset + OFF_PTP_SOURCE_UUID); - id = (u16 *)(data + offset + OFF_PTP_SEQUENCE_ID); + hi = get_unaligned_be16(data + offset + OFF_PTP_SOURCE_UUID + 0); + lo = get_unaligned_be32(data + offset + OFF_PTP_SOURCE_UUID + 2); + id = get_unaligned_be16(data + offset + OFF_PTP_SEQUENCE_ID); - memcpy(&lo, &hi[1], sizeof(lo)); - - return (uid_hi == *hi && - uid_lo == lo && - seqid == *id); + return (uid_hi == hi && uid_lo == lo && seqid == id); } static void @@ -138,7 +135,6 @@ pch_rx_timestamp(struct pch_gbe_adapter *adapter, struct sk_buff *skb) struct pci_dev *pdev; u64 ns; u32 hi, lo, val; - u16 uid, seq; if (!adapter->hwts_rx_en) return; @@ -154,10 +150,7 @@ pch_rx_timestamp(struct pch_gbe_adapter *adapter, struct sk_buff *skb) lo = pch_src_uuid_lo_read(pdev); hi = pch_src_uuid_hi_read(pdev); - uid = hi & 0xffff; - seq = (hi >> 16) & 0xffff; - - if (!pch_ptp_match(skb, htons(uid), htonl(lo), htons(seq))) + if (!pch_ptp_match(skb, hi, lo, hi >> 16)) goto out; ns = pch_rx_snap_read(pdev);