From patchwork Fri Nov 6 22:17:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 11888245 X-Patchwork-Delegate: johannes@sipsolutions.net 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 CC1276A2 for ; Fri, 6 Nov 2020 22:21:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB1CF206C1 for ; Fri, 6 Nov 2020 22:21:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604701297; bh=dgbf9vMJhf45lAdZILBXIwZQ1xaRMCOPTURp9X2yDDE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ITG6VVq0xlvwrMa+l4XsrIMdmJZLVNLhtwp/wzWI/nwarbYerd6HCEfkTRyGnP4d3 peCI4MJJzyBA1VQViUSB8SHeO6btup01kDiysQhOLXtHNZ/JzwMA7obm/A1E/rSd0g xmcU7kAc9k2+ESg7F32pkzugpMJznx9kWEpIiZY8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728973AbgKFWS0 (ORCPT ); Fri, 6 Nov 2020 17:18:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:41648 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728952AbgKFWSV (ORCPT ); Fri, 6 Nov 2020 17:18:21 -0500 Received: from localhost.localdomain (HSI-KBW-46-223-126-90.hsi.kabel-badenwuerttemberg.de [46.223.126.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1CE6420882; Fri, 6 Nov 2020 22:18:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604701100; bh=dgbf9vMJhf45lAdZILBXIwZQ1xaRMCOPTURp9X2yDDE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iyQOyLpk77BiXIfUbf/MZngHQV2t7HAqDoucsEDONs2ivJnNsBHZLhh8GVl2Ce9t+ hYgqArAgeX54SUCfK9szto3dnRNCXcFI0X1WboLlOEJbM/wVz4MzbZcUhvqnPk2Rw7 a8PrKC9y8FFaZyy2QZd/g7jol6rC+v4GQkH/T5Pg= From: Arnd Bergmann To: netdev@vger.kernel.org Cc: Arnd Bergmann , linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, bridge@lists.linux-foundation.org, linux-hams@vger.kernel.org, Jakub Kicinski , Christoph Hellwig , Alexander Viro , Johannes Berg , Andrew Lunn , Heiner Kallweit Subject: [RFC net-next 09/28] bonding: use siocdevprivate Date: Fri, 6 Nov 2020 23:17:24 +0100 Message-Id: <20201106221743.3271965-10-arnd@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201106221743.3271965-1-arnd@kernel.org> References: <20201106221743.3271965-1-arnd@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Arnd Bergmann The bonding driver supports two command codes for each operation: one in the SIOCDEVPRIVATE range and another one with the same definition but a unique command code. Only the second set currently works in compat mode, as the ifr_data expansion overwrites part of the ifr_slave field. Move the private ones into ndo_siocdevprivate and change the implementation to call the other function. This makes both version work correctly. Signed-off-by: Arnd Bergmann --- drivers/net/bonding/bond_main.c | 29 +++++++++++++++++++++++------ 1 file changed, 23 insertions(+), 6 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 84ecbc6fa0ff..5a2956fec025 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -3781,7 +3781,6 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd } return 0; - case BOND_INFO_QUERY_OLD: case SIOCBONDINFOQUERY: u_binfo = (struct ifbond __user *)ifr->ifr_data; @@ -3793,7 +3792,6 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd return -EFAULT; return 0; - case BOND_SLAVE_INFO_QUERY_OLD: case SIOCBONDSLAVEINFOQUERY: u_sinfo = (struct ifslave __user *)ifr->ifr_data; @@ -3823,19 +3821,15 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd return -ENODEV; switch (cmd) { - case BOND_ENSLAVE_OLD: case SIOCBONDENSLAVE: res = bond_enslave(bond_dev, slave_dev, NULL); break; - case BOND_RELEASE_OLD: case SIOCBONDRELEASE: res = bond_release(bond_dev, slave_dev); break; - case BOND_SETHWADDR_OLD: case SIOCBONDSETHWADDR: res = bond_set_dev_addr(bond_dev, slave_dev); break; - case BOND_CHANGE_ACTIVE_OLD: case SIOCBONDCHANGEACTIVE: bond_opt_initstr(&newval, slave_dev->name); res = __bond_opt_set_notify(bond, BOND_OPT_ACTIVE_SLAVE, @@ -3848,6 +3842,28 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd return res; } +static int bond_siocdevprivate(struct net_device *bond_dev, struct ifreq *ifr, + void __user *data, int cmd) +{ + struct ifreq ifrdata = { .ifr_data = data }; + switch (cmd) { + case BOND_INFO_QUERY_OLD: + return bond_do_ioctl(bond_dev, &ifrdata, SIOCBONDINFOQUERY); + case BOND_SLAVE_INFO_QUERY_OLD: + return bond_do_ioctl(bond_dev, &ifrdata, SIOCBONDSLAVEINFOQUERY); + case BOND_ENSLAVE_OLD: + return bond_do_ioctl(bond_dev, ifr, SIOCBONDENSLAVE); + case BOND_RELEASE_OLD: + return bond_do_ioctl(bond_dev, ifr, SIOCBONDRELEASE); + case BOND_SETHWADDR_OLD: + return bond_do_ioctl(bond_dev, ifr, SIOCBONDSETHWADDR); + case BOND_CHANGE_ACTIVE_OLD: + return bond_do_ioctl(bond_dev, ifr, SIOCBONDCHANGEACTIVE); + } + + return -EOPNOTSUPP; +} + static void bond_change_rx_flags(struct net_device *bond_dev, int change) { struct bonding *bond = netdev_priv(bond_dev); @@ -4642,6 +4658,7 @@ static const struct net_device_ops bond_netdev_ops = { .ndo_select_queue = bond_select_queue, .ndo_get_stats64 = bond_get_stats, .ndo_do_ioctl = bond_do_ioctl, + .ndo_siocdevprivate = bond_siocdevprivate, .ndo_change_rx_flags = bond_change_rx_flags, .ndo_set_rx_mode = bond_set_rx_mode, .ndo_change_mtu = bond_change_mtu,