From patchwork Sat Sep 25 04:27:26 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xin, Xiaohui" X-Patchwork-Id: 208472 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 o8P4Fgsh007554 for ; Sat, 25 Sep 2010 04:15:42 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755903Ab0IYENx (ORCPT ); Sat, 25 Sep 2010 00:13:53 -0400 Received: from mga02.intel.com ([134.134.136.20]:47863 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751878Ab0IYEKp (ORCPT ); Sat, 25 Sep 2010 00:10:45 -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="557826795" Received: from unknown (HELO localhost.localdomain.sh.intel.com) ([10.239.36.37]) by orsmga002.jf.intel.com with ESMTP; 24 Sep 2010 21:10:39 -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 08/17] Modify netdev_free_page() to release external buffer Date: Sat, 25 Sep 2010 12:27:26 +0800 Message-Id: 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 04:15:43 +0000 (UTC) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index ab29675..3d7f70e 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1512,9 +1512,11 @@ static inline struct page *netdev_alloc_page(struct net_device *dev) return __netdev_alloc_page(dev, GFP_ATOMIC); } +extern void __netdev_free_page(struct net_device *dev, struct page *page); + static inline void netdev_free_page(struct net_device *dev, struct page *page) { - __free_page(page); + __netdev_free_page(dev, page); } /** diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 1a61e2b..bbf4707 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -306,6 +306,30 @@ struct page *__netdev_alloc_page(struct net_device *dev, gfp_t gfp_mask) } EXPORT_SYMBOL(__netdev_alloc_page); +void netdev_free_ext_page(struct net_device *dev, struct page *page) +{ + struct skb_ext_page *ext_page = NULL; + if (dev_is_mpassthru(dev) && dev->mp_port->hash) { + ext_page = dev->mp_port->hash(dev, page); + if (ext_page) + ext_page->dtor(ext_page); + else + __free_page(page); + } +} +EXPORT_SYMBOL(netdev_free_ext_page); + +void __netdev_free_page(struct net_device *dev, struct page *page) +{ + if (dev_is_mpassthru(dev)) { + netdev_free_ext_page(dev, page); + return; + } + + __free_page(page); +} +EXPORT_SYMBOL(__netdev_free_page); + void skb_add_rx_frag(struct sk_buff *skb, int i, struct page *page, int off, int size) {