From patchwork Sat Feb 15 02:59:40 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Luis R. Rodriguez" X-Patchwork-Id: 320604 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id C35F32C00A7 for ; Sat, 15 Feb 2014 14:01:20 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752660AbaBODAx (ORCPT ); Fri, 14 Feb 2014 22:00:53 -0500 Received: from mail-pa0-f43.google.com ([209.85.220.43]:60227 "EHLO mail-pa0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752032AbaBODAL (ORCPT ); Fri, 14 Feb 2014 22:00:11 -0500 Received: by mail-pa0-f43.google.com with SMTP id rd3so13033262pab.16 for ; Fri, 14 Feb 2014 19:00:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=zavCAOp4FffOgHCIqVFgMZMrV/Wz6v9TByhiz6Abs/8=; b=j6QTdEto+3XP2Txp5Rzz/6c5o0zEnbXXeP34k6GoruYjHl0sei0ieZMnQ5JsTgQVF4 D0rlMWsi0T7WzdOPRAqGKz/yeJ8gCPQjV8107BUw7Q6JNcPiPwhqBrNL7CCfhdC5rPwE rXib11A00SkFvp3Dh1xzEEyQoZxf3TstTztl82QYXzNUQxi0BdBy/A0dz3cAZ/u6+fOt QYpxkJKFz1qieEy0Ft78ighBdG00ad2ZVbtH1R+qD4jbMDI/sg50Ymilg8kcSgg+BUSs ZkTqnzJz4+fSr+r/lqVJFwY2ZxBJkJFqtLypqqWSFIGAsp5ZiwF6Ajq+n+dfYo5V8aw7 1rDQ== X-Received: by 10.67.14.231 with SMTP id fj7mr12632399pad.115.1392433210704; Fri, 14 Feb 2014 19:00:10 -0800 (PST) Received: from mcgrof@gmail.com (c-24-7-61-223.hsd1.ca.comcast.net. [24.7.61.223]) by mx.google.com with ESMTPSA id e3sm22184777pbc.17.2014.02.14.19.00.06 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 14 Feb 2014 19:00:09 -0800 (PST) Received: by mcgrof@gmail.com (sSMTP sendmail emulation); Fri, 14 Feb 2014 19:00:04 -0800 From: "Luis R. Rodriguez" To: netdev@vger.kernel.org Cc: xen-devel@lists.xenproject.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, "Luis R. Rodriguez" , Paul Durrant , Ian Campbell , Wei Liu Subject: [RFC v2 4/4] xen-netback: skip IPv4 and IPv6 interfaces Date: Fri, 14 Feb 2014 18:59:40 -0800 Message-Id: <1392433180-16052-5-git-send-email-mcgrof@do-not-panic.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1392433180-16052-1-git-send-email-mcgrof@do-not-panic.com> References: <1392433180-16052-1-git-send-email-mcgrof@do-not-panic.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: "Luis R. Rodriguez" The xen-netback driver is used only to provide a backend interface for the frontend. The link is the only thing we use, and that is used internally for letting us know when the xen-netfront is ready, when it switches to XenbusStateConnected. Note that only when the both the xen-netfront and xen-netback are both in state XenbusStateConnected will xen-netback allow userspace on the host (backend) to bring up the interface. Enabling and disabling the interface will simply enable or disable NAPI respectively, and that's used for IRQ communication set up with the xen event channels. Cc: Paul Durrant Cc: Ian Campbell Cc: Wei Liu Cc: xen-devel@lists.xenproject.org Cc: netdev@vger.kernel.org Signed-off-by: Luis R. Rodriguez --- drivers/net/xen-netback/interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c index d380e3f..07e6fd2 100644 --- a/drivers/net/xen-netback/interface.c +++ b/drivers/net/xen-netback/interface.c @@ -351,7 +351,7 @@ struct xenvif *xenvif_alloc(struct device *parent, domid_t domid, eth_hw_addr_random(dev); memcpy(dev->dev_addr, xen_oui, 3); - dev->priv_flags |= IFF_BRIDGE_NON_ROOT; + dev->priv_flags |= IFF_BRIDGE_NON_ROOT | IFF_SKIP_IP; netif_napi_add(dev, &vif->napi, xenvif_poll, XENVIF_NAPI_WEIGHT); netif_carrier_off(dev);