From patchwork Wed Nov 18 20:45:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antonio Cardace X-Patchwork-Id: 11915833 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=-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 15FB0C64E7B for ; Wed, 18 Nov 2020 20:45:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BFE99246D3 for ; Wed, 18 Nov 2020 20:45:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gGoOXFxh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727314AbgKRUpl (ORCPT ); Wed, 18 Nov 2020 15:45:41 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:22424 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727298AbgKRUpk (ORCPT ); Wed, 18 Nov 2020 15:45:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605732339; 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=s1/NRA0IcfSE+sNP/YR+0YHuFh+fpJOX7TpxnHhSo2I=; b=gGoOXFxhJVDJmibl0OXjEd1znnOpm/qk0eu7+2XkGrPfrRMA2a63M8Iee74omOi1YWuCnx wWejjJY0AybKCpmiOAxirW5x6xAQjX8Zc0BNx5/31b4r/pCZyPgHXobk/EBz8/ZzFx5Ufx Fw3laewYrkWKtydFywxzki0PTyIM24E= 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-209-TK9s3u_iOaKzEWcUmcVU4A-1; Wed, 18 Nov 2020 15:45:37 -0500 X-MC-Unique: TK9s3u_iOaKzEWcUmcVU4A-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 474371084D61; Wed, 18 Nov 2020 20:45:36 +0000 (UTC) Received: from yoda.redhat.com (unknown [10.40.192.38]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0301719C59; Wed, 18 Nov 2020 20:45:34 +0000 (UTC) From: Antonio Cardace To: netdev@vger.kernel.org, "David S . Miller" , Jakub Kicinski , Michal Kubecek Subject: [PATCH net-next v6 5/6] selftests: refactor get_netdev_name function Date: Wed, 18 Nov 2020 21:45:21 +0100 Message-Id: <20201118204522.5660-6-acardace@redhat.com> In-Reply-To: <20201118204522.5660-1-acardace@redhat.com> References: <20201118204522.5660-1-acardace@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@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 --- .../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/ }