From patchwork Thu Nov 4 09:05:03 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xin, Xiaohui" X-Patchwork-Id: 301412 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 oA48m6DJ010326 for ; Thu, 4 Nov 2010 08:48:08 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755321Ab0KDIrh (ORCPT ); Thu, 4 Nov 2010 04:47:37 -0400 Received: from mga02.intel.com ([134.134.136.20]:34881 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754080Ab0KDIoI (ORCPT ); Thu, 4 Nov 2010 04:44:08 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 04 Nov 2010 01:44:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.58,294,1286175600"; d="scan'208";a="570251192" Received: from gw-vmm.sh.intel.com (HELO localhost.localdomain.org) ([10.239.48.110]) by orsmga002.jf.intel.com with ESMTP; 04 Nov 2010 01:44:05 -0700 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 v14 07/17]Modify netdev_alloc_page() to get external buffer Date: Thu, 4 Nov 2010 17:05:03 +0800 Message-Id: <5a5e9fe302ee1838873571fb79fdc9e617b65817.1288860477.git.xiaohui.xin@intel.com> X-Mailer: git-send-email 1.7.3 In-Reply-To: <1288861513-5707-1-git-send-email-xiaohui.xin@intel.com> References: <1288861513-5707-1-git-send-email-xiaohui.xin@intel.com> 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]); Thu, 04 Nov 2010 08:48:08 +0000 (UTC) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 5e6d69c..f39d372 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -262,11 +262,38 @@ 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; }