From mboxrd@z Thu Jan 1 00:00:00 1970 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=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 B263BC71156 for ; Wed, 18 Nov 2020 17:18:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6AE62248AA for ; Wed, 18 Nov 2020 17:18:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="KDhat3Ss" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728251AbgKRRSt (ORCPT ); Wed, 18 Nov 2020 12:18:49 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:36799 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728242AbgKRRSs (ORCPT ); Wed, 18 Nov 2020 12:18:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605719927; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nmBUplRiGrHWbjTPVX1Ukbt0yflwFSZ4cm3S5FuFDE8=; b=KDhat3SsuaYP6r7ii8sb3IAcR6DtKZKCIMsBBwK4qNHX4X6uFNGDLvMtNHLmlEMuCtqxfU Lgn/xbfWBKoQyNobhXD67OAcooFe+peYvqF3C8aAE3gHuwivbrk0uf1n5+OxU8tSYAIKtg VwcK6YCSZAkXyi3vgSG0ij0gxF/xE2c= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-83-UQZmciETPCK_JZYP3vkHIQ-1; Wed, 18 Nov 2020 12:18:42 -0500 X-MC-Unique: UQZmciETPCK_JZYP3vkHIQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3E8431005D4E; Wed, 18 Nov 2020 17:18:41 +0000 (UTC) Received: from yoda.fritz.box (unknown [10.40.195.78]) by smtp.corp.redhat.com (Postfix) with ESMTP id 11E1260843; Wed, 18 Nov 2020 17:18:39 +0000 (UTC) From: Antonio Cardace To: netdev@vger.kernel.org, "David S . Miller" , Jakub Kicinski , Michal Kubecek Subject: [PATCH net-next v5 5/6] selftests: refactor get_netdev_name function Date: Wed, 18 Nov 2020 18:18:26 +0100 Message-Id: <20201118171827.48143-6-acardace@redhat.com> In-Reply-To: <20201118171827.48143-1-acardace@redhat.com> References: <20201118171827.48143-1-acardace@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org As pointed out by Michal Kubecek, getting the name with the previous approach was racy, it's better and easier to get the name of the device with this patch's approach. Essentialy the function doesn't need to exist anymore as it's a simple 'ls' command. Signed-off-by: Antonio Cardace --- v4 -> v5 - changed echo '$(ls /sys/bus/netdevsim/devices/netdevsim${NSIM_ID}/net/)' to just 'ls /sys/bus/netdevsim/devices/netdevsim${NSIM_ID}/net/' --- .../drivers/net/netdevsim/ethtool-common.sh | 20 ++----------------- 1 file changed, 2 insertions(+), 18 deletions(-) diff --git a/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh b/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh index fa44cf6e732c..9f64d5c7107b 100644 --- a/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh +++ b/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh @@ -20,23 +20,6 @@ function cleanup { trap cleanup EXIT -function get_netdev_name { - local -n old=$1 - - new=$(ls /sys/class/net) - - for netdev in $new; do - for check in $old; do - [ $netdev == $check ] && break - done - - if [ $netdev != $check ]; then - echo $netdev - break - fi - done -} - function check { local code=$1 local str=$2 @@ -65,5 +48,6 @@ function make_netdev { fi echo $NSIM_ID > /sys/bus/netdevsim/new_device - echo `get_netdev_name old_netdevs` + # get new device name + ls /sys/bus/netdevsim/devices/netdevsim${NSIM_ID}/net/ } -- 2.28.0