From patchwork Thu Mar 25 17:34:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 409301 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 10BC2C433E8 for ; Thu, 25 Mar 2021 17:34:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DA86C61A28 for ; Thu, 25 Mar 2021 17:34:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230191AbhCYRee (ORCPT ); Thu, 25 Mar 2021 13:34:34 -0400 Received: from mga09.intel.com ([134.134.136.24]:22784 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230042AbhCYReR (ORCPT ); Thu, 25 Mar 2021 13:34:17 -0400 IronPort-SDR: Ppg1JrDQNPFTKUUpIB1naUTuS3/IpmFLAv+zM6nsRIOpYOLmmId+y1JcZnLZH89j919hab/QS0 Cwu6KxwNil8A== X-IronPort-AV: E=McAfee;i="6000,8403,9934"; a="191079466" X-IronPort-AV: E=Sophos;i="5.81,278,1610438400"; d="scan'208";a="191079466" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Mar 2021 10:34:15 -0700 IronPort-SDR: vFgee6Zny4lNpw1i77hdpCG7uQI7Ob7LaBBTFSGaXVEDz3H4RQ9M5fPWRHtvWLe5oDbzRskOyf 3/m436fW4T2A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,278,1610438400"; d="scan'208";a="525731290" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga004.jf.intel.com with ESMTP; 25 Mar 2021 10:34:09 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 5F0124E1; Thu, 25 Mar 2021 19:34:23 +0200 (EET) From: Andy Shevchenko To: Flavio Suligoi , Jesse Brandeburg , Andy Shevchenko , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: "David S. Miller" , Jakub Kicinski Subject: [PATCH v2 4/5] net: pch_gbe: Use proper accessors to BE data in pch_ptp_match() Date: Thu, 25 Mar 2021 19:34:11 +0200 Message-Id: <20210325173412.82911-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210325173412.82911-1-andriy.shevchenko@linux.intel.com> References: <20210325173412.82911-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.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. Signed-off-by: Andy Shevchenko --- .../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 91de7faa6dfe..b54e73c57d65 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 @@ -108,7 +108,7 @@ 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) @@ -119,14 +119,11 @@ 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 @@ -136,7 +133,6 @@ 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; @@ -152,10 +148,7 @@ 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);