From patchwork Sat Sep 25 04:27:25 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xin, Xiaohui" X-Patchwork-Id: 208492 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 o8P4Fgsg007554 for ; Sat, 25 Sep 2010 04:15:42 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755787Ab0IYENw (ORCPT ); Sat, 25 Sep 2010 00:13:52 -0400 Received: from mga02.intel.com ([134.134.136.20]:29442 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751952Ab0IYEKq (ORCPT ); Sat, 25 Sep 2010 00:10:46 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 24 Sep 2010 21:10:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.57,233,1283756400"; d="scan'208";a="557826793" Received: from unknown (HELO localhost.localdomain.sh.intel.com) ([10.239.36.37]) by orsmga002.jf.intel.com with ESMTP; 24 Sep 2010 21:10:37 -0700 From: xiaohui.xin@intel.com To: netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@elte.hu, davem@davemloft.net, herbert@gondor.hengli.com.au, jdike@linux.intel.com Cc: Xin Xiaohui Subject: [PATCH v11 07/17] Modify netdev_alloc_page() to get external buffer Date: Sat, 25 Sep 2010 12:27:25 +0800 Message-Id: <8cf1dad79db07e71707cfd256927ef3324adfda9.1285385607.git.xiaohui.xin@intel.com> X-Mailer: git-send-email 1.7.3 In-Reply-To: <1285388855-27410-1-git-send-email-xiaohui.xin@intel.com> References: <1285388855-27410-1-git-send-email-xiaohui.xin@intel.com> In-Reply-To: <59d8a50047ee01e26658fd676d26c0162b79e5fd.1285385607.git.xiaohui.xin@intel.com> References: <59d8a50047ee01e26658fd676d26c0162b79e5fd.1285385607.git.xiaohui.xin@intel.com> 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]); Sat, 25 Sep 2010 04:15:42 +0000 (UTC) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 117d82b..1a61e2b 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -269,11 +269,38 @@ 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 mpassthru_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; }