From patchwork Thu Aug 13 07:37:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Chen Qun X-Patchwork-Id: 11711899 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 61D46138C for ; Thu, 13 Aug 2020 07:41:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3E8DD20771 for ; Thu, 13 Aug 2020 07:41:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3E8DD20771 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:33144 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k67rS-0005YP-D5 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 13 Aug 2020 03:41:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40826) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k67p8-0008OR-AB; Thu, 13 Aug 2020 03:38:54 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:4238 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k67p6-0001oS-FE; Thu, 13 Aug 2020 03:38:53 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 2A6E6751AD03C9EF59B6; Thu, 13 Aug 2020 15:38:47 +0800 (CST) Received: from huawei.com (10.175.104.175) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server id 14.3.487.0; Thu, 13 Aug 2020 15:38:36 +0800 From: Chen Qun To: , Subject: [PATCH 06/11] hw/net/virtio-net:Remove redundant statement in virtio_net_rsc_tcp_ctrl_check() Date: Thu, 13 Aug 2020 15:37:07 +0800 Message-ID: <20200813073712.4001404-7-kuhn.chenqun@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200813073712.4001404-1-kuhn.chenqun@huawei.com> References: <20200813073712.4001404-1-kuhn.chenqun@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.104.175] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.191; envelope-from=kuhn.chenqun@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/13 03:38:37 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: zhang.zhanghailiang@huawei.com, "Michael S. Tsirkin" , Jason Wang , pannengyuan@huawei.com, Euler Robot , Chen Qun Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Clang static code analyzer show warning: hw/net/virtio-net.c:2077:5: warning: Value stored to 'tcp_flag' is never read tcp_flag &= VIRTIO_NET_TCP_FLAG; ^ ~~~~~~~~~~~~~~~~~~~ The 'VIRTIO_NET_TCP_FLAG' is '0x3F'. The last ‘tcp_flag’ assignment statement is the same as that of the first two statements. Reported-by: Euler Robot Signed-off-by: Chen Qun Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Michael S. Tsirkin --- Cc: "Michael S. Tsirkin" Cc: Jason Wang --- hw/net/virtio-net.c | 1 - 1 file changed, 1 deletion(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index a1fe9e9285..cb0d27084c 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -2075,7 +2075,6 @@ static int virtio_net_rsc_tcp_ctrl_check(VirtioNetRscChain *chain, tcp_flag = htons(tcp->th_offset_flags); tcp_hdr = (tcp_flag & VIRTIO_NET_TCP_HDR_LENGTH) >> 10; tcp_flag &= VIRTIO_NET_TCP_FLAG; - tcp_flag = htons(tcp->th_offset_flags) & 0x3F; if (tcp_flag & TH_SYN) { chain->stat.tcp_syn++; return RSC_BYPASS;