From patchwork Sun Jul 12 22:16:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 1327614 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=pXZ+CWIp; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B4h2f2BKYz9sR4 for ; Mon, 13 Jul 2020 08:16:42 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728093AbgGLWQj (ORCPT ); Sun, 12 Jul 2020 18:16:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727919AbgGLWQh (ORCPT ); Sun, 12 Jul 2020 18:16:37 -0400 Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 26F85C08C5DB for ; Sun, 12 Jul 2020 15:16:37 -0700 (PDT) Received: by mail-pj1-x1044.google.com with SMTP id gc9so5158178pjb.2 for ; Sun, 12 Jul 2020 15:16:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=c2PP8vI6Q3zuI13PpotIpcM2sPjPaTgti2Sw7JH+Ws0=; b=pXZ+CWIpneSWxluqCbryvkMr2S3w14a3XlGDakJrxBmf5FeX7yvgwlbbygIrTbmvcU qRemuKeatlUD5N9VHm2Xrx0Xid9arxQzJpcKvENp4hVL9cL8NX73kSKwFsRsLn+8K2RW trH4Ve+xSexMhp2HNmYEWyozJzfTQE3rnIQg0UGIjlRcQ9HC9cVoTVwUPJY/l6UVlwp9 r/aOV6fdYbvtrSoKymkTGbL4VPx8couM3RCYmHd4H4MDKsdgk/NAM4Qt2QjEFlF75F3L iRFbiIBd2W6Ugu+U7I9zTAIu63Du4oqVC1uvD9EZ8nZtPGIHODfhA33cGSxeHN8A8cXi uNMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=c2PP8vI6Q3zuI13PpotIpcM2sPjPaTgti2Sw7JH+Ws0=; b=mfwarMOBi5oLm3196/5WAYW2nLLcxz9jwr/dvPxIgifAtAcV/lCq/yBKrkCQ0RBi6f PW3mdyrOlCsAoLv34kUNwa3eOZPnjTczn4JR6HRub2ySDmcrHZ1OvWABnz9Bi2yjM3Oy YrvfgCTk2S7fZr/Y7UP6Yb5W2kwPiW5OBjhCQDmEMRfUvogCcb5XexfdCKvyV0+8xjkD 7+wiiJVoJePLsP/W2JEzdiCeAPi1tFdMqHHQ8k1DNwBc/PTsrLvH9+SGFm6xnKg/3kgz RqXgDIlF/lfYjFbpP7m5+3Yz4W0+AxVOQOeJQxTb82eM7B9nv7+mH5ymzIMt44KVPucf oeyQ== X-Gm-Message-State: AOAM533s48pvJjMdws5RR+5zvVO5r1BRmIZCZ3U1tT8OUMUFAHaSGtBz SObCJZANFngVFLjPEamL+MmOaFOH X-Google-Smtp-Source: ABdhPJz1MWtaEMm7VR9OBbmyARQy6FHQIkK0fNJO/pMJdLqHs1MgjEpoDQpzqcgpxuiw/U0KuvAe6Q== X-Received: by 2002:a17:90a:d684:: with SMTP id x4mr16587837pju.62.1594592196281; Sun, 12 Jul 2020 15:16:36 -0700 (PDT) Received: from localhost.localdomain (ip68-111-84-250.oc.oc.cox.net. [68.111.84.250]) by smtp.gmail.com with ESMTPSA id y198sm12470228pfg.116.2020.07.12.15.16.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 12 Jul 2020 15:16:35 -0700 (PDT) From: Florian Fainelli To: netdev@vger.kernel.org Cc: Florian Fainelli , andrew@lunn.ch, vivien.didelot@gmail.com, mkubecek@suse.cz, kuba@kernel.org, davem@davemloft.net Subject: [PATCH net-next 2/3] net: dsa: Implement ndo_equal for CPU port net_device Date: Sun, 12 Jul 2020 15:16:24 -0700 Message-Id: <20200712221625.287763-3-f.fainelli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200712221625.287763-1-f.fainelli@gmail.com> References: <20200712221625.287763-1-f.fainelli@gmail.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In order to preserve comparisons of the DSA network device bound to the switch's CPU port, implement net_device::ndo_equal which will return true while doing net_device_ops pointer comparisons. Network device drivers might do these checks to reject notifications targeting a different net_device instance and those could be non-functional because of the DSA overloading of net_device_ops. No such cases are known to exist in tree today. Signed-off-by: Florian Fainelli --- net/dsa/master.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/dsa/master.c b/net/dsa/master.c index 480a61460c23..1c4f0736426e 100644 --- a/net/dsa/master.c +++ b/net/dsa/master.c @@ -226,6 +226,14 @@ static int dsa_master_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) return err; } +static bool dsa_master_equal(struct net_device *dev, + const struct net_device_ops *ops) +{ + struct dsa_port *cpu_dp = dev->dsa_ptr; + + return cpu_dp->orig_ndo_ops == ops; +} + static int dsa_master_ethtool_setup(struct net_device *dev) { struct dsa_port *cpu_dp = dev->dsa_ptr; @@ -279,6 +287,7 @@ static int dsa_master_ndo_setup(struct net_device *dev) ops->ndo_get_phys_port_name = dsa_master_get_phys_port_name; ops->ndo_do_ioctl = dsa_master_ioctl; + ops->ndo_equal = dsa_master_equal; dev->netdev_ops = ops;