From patchwork Wed Dec 1 08:08:18 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xin, Xiaohui" X-Patchwork-Id: 370341 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oB17ox4t012788 for ; Wed, 1 Dec 2010 07:51:00 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753230Ab0LAHub (ORCPT ); Wed, 1 Dec 2010 02:50:31 -0500 Received: from mga02.intel.com ([134.134.136.20]:19205 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753567Ab0LAHqe (ORCPT ); Wed, 1 Dec 2010 02:46:34 -0500 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 30 Nov 2010 23:46:34 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.59,282,1288594800"; d="scan'208";a="682672348" Received: from unknown (HELO localhost.localdomain.sh.intel.com) ([10.239.36.138]) by orsmga001.jf.intel.com with ESMTP; 30 Nov 2010 23:46:32 -0800 From: xiaohui.xin@intel.com To: netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com, mingo@elte.hu, davem@davemloft.net, herbert@gondor.hengli.com.au, jdike@linux.intel.com Cc: Xin Xiaohui Subject: [PATCH v16 07/17]Modify netdev_alloc_page() to get external buffer Date: Wed, 1 Dec 2010 16:08:18 +0800 Message-Id: <1a930880ab6ae317da800e2d43efb2ed1f682481.1291187695.git.xiaohui.xin@intel.com> X-Mailer: git-send-email 1.7.3 In-Reply-To: References: In-Reply-To: References: Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Wed, 01 Dec 2010 07:51:00 +0000 (UTC) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index c83b421..b9858c7 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -261,11 +261,38 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev, } EXPORT_SYMBOL(__netdev_alloc_skb); +struct page *netdev_alloc_ext_pages(struct net_device *dev, int npages) +{ + struct mp_port *port; + struct skb_ext_page *ext_page = NULL; + + port = dev->mp_port; + if (!port) + goto out; + ext_page = port->ctor(port, NULL, npages); + if (ext_page) + return ext_page->page; +out: + return NULL; + +} +EXPORT_SYMBOL(netdev_alloc_ext_pages); + +struct page *netdev_alloc_ext_page(struct net_device *dev) +{ + return netdev_alloc_ext_pages(dev, 1); + +} +EXPORT_SYMBOL(netdev_alloc_ext_page); + struct page *__netdev_alloc_page(struct net_device *dev, gfp_t gfp_mask) { int node = dev->dev.parent ? dev_to_node(dev->dev.parent) : -1; struct page *page; + if (dev_is_mpassthru(dev)) + return netdev_alloc_ext_page(dev); + page = alloc_pages_node(node, gfp_mask, 0); return page; }