Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754873Ab0KIIor (ORCPT ); Tue, 9 Nov 2010 03:44:47 -0500 Received: from mga11.intel.com ([192.55.52.93]:40024 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754142Ab0KIIlk (ORCPT ); Tue, 9 Nov 2010 03:41:40 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.59,174,1288594800"; d="scan'208";a="624917743" 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 v15 08/17]Modify netdev_free_page() to release external buffer Date: Tue, 9 Nov 2010 17:03:13 +0800 Message-Id: <0f65152a86d2c0f90945cb8fd67a2eb330728229.1289280886.git.xiaohui.xin@intel.com> X-Mailer: git-send-email 1.7.3 In-Reply-To: <1289293402-4791-1-git-send-email-xiaohui.xin@intel.com> References: <1289293402-4791-1-git-send-email-xiaohui.xin@intel.com> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2077 Lines: 72 From: Xin Xiaohui Currently, it can get external buffers from mp device. Signed-off-by: Xin Xiaohui Signed-off-by: Zhao Yu Reviewed-by: Jeff Dike --- include/linux/skbuff.h | 4 +++- net/core/skbuff.c | 24 ++++++++++++++++++++++++ 2 files changed, 27 insertions(+), 1 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6e1e991..6309ce6 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1586,9 +1586,11 @@ 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 a1018bd..3d81113 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -298,6 +298,30 @@ 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) { -- 1.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/