From patchwork Mon May 18 11:46:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 219070 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 1F6B3C433DF for ; Mon, 18 May 2020 11:47:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EA8CD206D4 for ; Mon, 18 May 2020 11:47:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="C5wy4qYX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727899AbgERLrU (ORCPT ); Mon, 18 May 2020 07:47:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727012AbgERLrQ (ORCPT ); Mon, 18 May 2020 07:47:16 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87372C05BD0A; Mon, 18 May 2020 04:47:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=K/zO8lsMaXBqAf5AELefHDXlMaRm3kqITdpQDdOoyHI=; b=C5wy4qYXA4ExeBGmK34l3NMgWl 712ezN/63mK9kPx/cvEE3w/lbihJyDkVC2xseczC22kjIGvrQ2Xun+f8sWwZZLCP6mvuGRYpSraVq HbfwIaxlKMm6sYfII6wPPU9kxBmKVikwVudirVquOIY18yhm1Rh/zvrkjyqY2YKOpdqUKCeZsHyO8 +U+5JW+NgB+k8FWa4LXraGrBqdfVCCHu0iN1gFJgM3jTeIv1Tr/P/9HdPBpCcajogXB7sWYfZUAGc Af1w28fv2r3y1U9H0gzHq9BqpUOnVPv3sHHSmlCsdlg8zGncNM/yI1Q4JDwjCSmXCyvb0gx/Su9+Z K/qcpAQQ==; Received: from [2001:4bb8:188:1506:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jaeEe-0004OH-I0; Mon, 18 May 2020 11:47:08 +0000 From: Christoph Hellwig To: "David S. Miller" , Jakub Kicinski Cc: Alexey Kuznetsov , Hideaki YOSHIFUJI , Steffen Klassert , Herbert Xu , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/9] impr: use ->ndo_tunnel_ctl in ipmr_new_tunnel Date: Mon, 18 May 2020 13:46:50 +0200 Message-Id: <20200518114655.987760-5-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200518114655.987760-1-hch@lst.de> References: <20200518114655.987760-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use the new ->ndo_tunnel_ctl instead of overriding the address limit and using ->ndo_do_ioctl just to do a pointless user copy. Signed-off-by: Christoph Hellwig --- net/ipv4/ipmr.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index cd1a3260a99af..d3e9b80a57de2 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -442,8 +442,6 @@ static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) { struct net_device *tunnel_dev, *new_dev; struct ip_tunnel_parm p = { }; - mm_segment_t oldfs = get_fs(); - struct ifreq ifr; int err; tunnel_dev = __dev_get_by_name(net, "tunl0"); @@ -456,15 +454,11 @@ static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) p.iph.ihl = 5; p.iph.protocol = IPPROTO_IPIP; sprintf(p.name, "dvmrp%d", v->vifc_vifi); - ifr.ifr_ifru.ifru_data = (__force void __user *)&p; - if (!tunnel_dev->netdev_ops->ndo_do_ioctl) + if (!tunnel_dev->netdev_ops->ndo_tunnel_ctl) goto out; - - set_fs(KERNEL_DS); - err = tunnel_dev->netdev_ops->ndo_do_ioctl(tunnel_dev, &ifr, + err = tunnel_dev->netdev_ops->ndo_tunnel_ctl(tunnel_dev, &p, SIOCADDTUNNEL); - set_fs(oldfs); if (err) goto out; @@ -481,10 +475,8 @@ static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) err = dev_set_allmulti(new_dev, 1); if (err) { dev_close(new_dev); - set_fs(KERNEL_DS); - tunnel_dev->netdev_ops->ndo_do_ioctl(tunnel_dev, &ifr, + tunnel_dev->netdev_ops->ndo_tunnel_ctl(tunnel_dev, &p, SIOCDELTUNNEL); - set_fs(oldfs); dev_put(new_dev); new_dev = ERR_PTR(err); }