From mboxrd@z Thu Jan 1 00:00:00 1970 From: xiaohui.xin@intel.com Subject: [PATCH v12 01/17] Add a new structure for skb buffer from external. Date: Thu, 30 Sep 2010 22:04:18 +0800 Message-ID: <59d8a50047ee01e26658fd676d26c0162b79e5fd.1285853725.git.xiaohui.xin@intel.com> References: <1285855474-12110-1-git-send-email-xiaohui.xin@intel.com> Cc: Xin Xiaohui 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.apana.org.au, jdike@linux.intel.com Return-path: Received: from mga03.intel.com ([143.182.124.21]:30013 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756130Ab0I3Nqv (ORCPT ); Thu, 30 Sep 2010 09:46:51 -0400 In-Reply-To: <1285855474-12110-1-git-send-email-xiaohui.xin@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Xin Xiaohui Signed-off-by: Xin Xiaohui Signed-off-by: Zhao Yu Reviewed-by: Jeff Dike --- include/linux/skbuff.h | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 124f90c..74af06c 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -203,6 +203,15 @@ struct skb_shared_info { void * destructor_arg; }; +/* The structure is for a skb which pages may point to + * an external buffer, which is not allocated from kernel space. + * It also contains a destructor for itself. + */ +struct skb_ext_page { + struct page *page; + void (*dtor)(struct skb_ext_page *); +}; + /* We divide dataref into two halves. The higher 16 bits hold references * to the payload part of skb->data. The lower 16 bits hold references to * the entire skb->data. A clone of a headerless skb holds the length of -- 1.7.3