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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BECBFC7EE25 for ; Wed, 7 Jun 2023 23:14:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232255AbjFGXOY (ORCPT ); Wed, 7 Jun 2023 19:14:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35188 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229646AbjFGXOW (ORCPT ); Wed, 7 Jun 2023 19:14:22 -0400 Received: from mail-pl1-x62c.google.com (mail-pl1-x62c.google.com [IPv6:2607:f8b0:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 544CC1BD4 for ; Wed, 7 Jun 2023 16:14:21 -0700 (PDT) Received: by mail-pl1-x62c.google.com with SMTP id d9443c01a7336-1b04706c974so69279985ad.2 for ; Wed, 07 Jun 2023 16:14:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1686179661; x=1688771661; h=message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FXM2quBWNXOI6ViXw9QSKr/R4Ruji0gMPru1R5l3oXw=; b=GXPe7tah44WTUqkp11sFtP9JULVYq/PmZBGngH4KzkCVa8Q8GLE8t1D+fWROZ2AHfA sJiEVBOz53LRObW3H4s02NOt/7F3ds1Ym6T9NfistsPNauG4qgG+OIiEMxUjP/aJv2Ce m4SJn9AbbyaVNu38qkWokRCYEcjzlmpdwZo44= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686179661; x=1688771661; h=message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=FXM2quBWNXOI6ViXw9QSKr/R4Ruji0gMPru1R5l3oXw=; b=j5jfmJcDB5/NpLUvU0ldhadtB8TUbwENCHFtJp7+rnIwdC4Ktayp87i+e6CPKmJC09 BevQ8H1EqEX46hYRBWSOI9f8WRL5pUwe6WuurcgLwU9c/079/Zi73iiw0TCbxvhJAbO1 ewiRLuP6SNU3+d1CeSkQP58/2dz8ZSqjLYIWQAnvUnwNYgUcPB2BatdicWJNqBqswJmO zSR6I89lMcbVeQmnLPDePC9APJga7unYicxlZ+YMQJJyH/+9Ntyoj4+w8mo9CFVhWijR BMzakyFp1WSqi3OPbA1I/UjbmTYmlay876v4NtoCQFf1nhghUVcribbv8cgh3RdS1ofg Y8sA== X-Gm-Message-State: AC+VfDyCBcltGn1TPk+zzj0GtBg5FCiNnfPJiE1znV7lfrwetwgTN1+/ lfXe1xkzUHr0UEwbopbmdmw/Aw== X-Google-Smtp-Source: ACHHUZ5P1SYvSg4QHGDZ9GaL7pX6B7y5BCYVvjJR/8qJ0aMJBfYO0PkpLGdTfHMABLX6RWjoPuHGVQ== X-Received: by 2002:a17:902:c411:b0:1ac:5717:fd5 with SMTP id k17-20020a170902c41100b001ac57170fd5mr9331279plk.60.1686179660780; Wed, 07 Jun 2023 16:14:20 -0700 (PDT) Received: from stbirv-lnx-2.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id l13-20020a170903244d00b001ae4d4d2676sm16279pls.269.2023.06.07.16.14.19 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 07 Jun 2023 16:14:20 -0700 (PDT) From: Justin Chen To: netdev@vger.kernel.org Cc: bcm-kernel-feedback-list@broadcom.com, florian.fainelli@broadcom.com, Justin Chen , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , Daniil Tatianin , Ido Schimmel , Marco Bonelli , Wolfram Sang , Jiri Pirko , Gal Pressman , Vincent Mailhol , Kuniyuki Iwashima , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v2 net-next] ethtool: ioctl: improve error checking for set_wol Date: Wed, 7 Jun 2023 16:14:11 -0700 Message-Id: <1686179653-29750-1-git-send-email-justin.chen@broadcom.com> X-Mailer: git-send-email 2.7.4 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000b9f42b05fd924b77" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --000000000000b9f42b05fd924b77 The netlink version of set_wol checks for not supported wolopts and avoids setting wol when the correct wolopt is already set. If we do the same with the ioctl version then we can remove these checks from the driver layer. Reviewed-by: Simon Horman Signed-off-by: Justin Chen --- v2 - Return -EINVAL instead of -EOPNOTSUPP net/ethtool/ioctl.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index 6bb778e10461..37b582225854 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -1436,15 +1436,25 @@ static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) { - struct ethtool_wolinfo wol; + struct ethtool_wolinfo wol, cur_wol; int ret; - if (!dev->ethtool_ops->set_wol) + if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) return -EOPNOTSUPP; + memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); + cur_wol.cmd = ETHTOOL_GWOL; + dev->ethtool_ops->get_wol(dev, &cur_wol); + if (copy_from_user(&wol, useraddr, sizeof(wol))) return -EFAULT; + if (wol.wolopts & ~cur_wol.supported) + return -EINVAL; + + if (wol.wolopts == cur_wol.wolopts) 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