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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 <xiaohui.xin@intel.com>
Subject: [PATCH v16 01/17] Add a new structure for skb buffer from external.
Date: Wed,  1 Dec 2010 16:08:12 +0800	[thread overview]
Message-ID: <fc6e95d63a2c62aaf77f8ded22fc43ccefcdbbff.1291187695.git.xiaohui.xin@intel.com> (raw)

From: Xin Xiaohui <xiaohui.xin@intel.com>

Signed-off-by: Xin Xiaohui <xiaohui.xin@intel.com>
Signed-off-by: Zhao Yu <yzhao81new@gmail.com>
Reviewed-by: Jeff Dike <jdike@linux.intel.com>
---
 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


             reply	other threads:[~2010-12-01  7:46 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-01  8:08 xiaohui.xin [this message]
2010-12-01  8:08 ` [PATCH v16 02/17]Add a new struct for device to manipulate external buffer xiaohui.xin
2010-12-10 20:36   ` David Miller
2010-12-01  8:08 ` [PATCH v16 03/17] Add a ndo_mp_port_prep pointer to net_device_ops xiaohui.xin
2010-12-10 20:36   ` David Miller
2010-12-01  8:08 ` [PATCH v16 04/17]Add a function make external buffer owner to query capability xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 05/17] Add a function to indicate if device use external buffer xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 06/17]move member destructor_arg before member dataref xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 07/17]Modify netdev_alloc_page() to get external buffer xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 08/17]Modify netdev_free_page() to release " xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 09/17] Don't do skb recycle, if device use " xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 10/17] If device is in zero-copy mode first, bonding will fail xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 11/17]Add a hook to intercept external buffers from NIC driver xiaohui.xin
2010-12-01  9:38   ` Changli Gao
2010-12-01  8:08 ` [PATCH v16 12/17] Add header file for mp device xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 13/17] Add mp(mediate passthru) device xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 14/17]Add a kconfig entry and make entry for mp device xiaohui.xin
2010-12-01 17:53   ` Randy Dunlap
2010-12-02  1:32     ` Xin, Xiaohui
2010-12-01  8:08 ` [PATCH v16 15/17]Provides multiple submits and asynchronous notifications xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 16/17]An example how to modifiy NIC driver to use napi_gro_frags() interface xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 17/17]An example how to alloc user buffer based on " xiaohui.xin
2010-12-01  8:08 ` [PATCH v16 00/17] Provide a zero-copy method on KVM virtio-net xiaohui.xin

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