Re: [PATCH v1 3/3] Let host NIC driver to DMA to guest user space.

On Sat,  6 Mar 2010 17:38:38 +0800
xiaohui.xin@intel.com wrote:

From: Xin Xiaohui <redacted>

The patch let host NIC driver to receive user space skb,
then the driver has chance to directly DMA to guest user
space buffers thru single ethX interface.

Signed-off-by: Xin Xiaohui <redacted>
Signed-off-by: Zhao Yu <redacted>
Sigend-off-by: Jeff Dike [off-list ref]
---
 include/linux/netdevice.h |   76 ++++++++++++++++++++++++++++++++++++++++++-
 include/linux/skbuff.h    |   30 +++++++++++++++--
 net/core/dev.c            |   32 ++++++++++++++++++
 net/core/skbuff.c         |   79 +++++++++++++++++++++++++++++++++++++++++----
 4 files changed, 205 insertions(+), 12 deletions(-)

There are too many ifdef's in this implementation.
I would prefer to see a few functions (with stub for the non-ifdef case),
like the network namespace code.