Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753340Ab0LAHq0 (ORCPT ); Wed, 1 Dec 2010 02:46:26 -0500 Received: from mga02.intel.com ([134.134.136.20]:41622 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753138Ab0LAHqY (ORCPT ); Wed, 1 Dec 2010 02:46:24 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.59,282,1288594800"; d="scan'208";a="682672310" 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 v16 01/17] Add a new structure for skb buffer from external. Date: Wed, 1 Dec 2010 16:08:12 +0800 Message-Id: X-Mailer: git-send-email 1.7.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1265 Lines: 37 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 77eb60d..696e690 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -211,6 +211,15 @@ struct skb_shared_info { skb_frag_t frags[MAX_SKB_FRAGS]; }; +/* 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 -- 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/