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Re: [PATCH v15 00/17] Provide a zero-copy method on KVM virtio-net.

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From: David Miller
Subject: Re: [PATCH v15 00/17] Provide a zero-copy method on KVM virtio-net.
Date: Wednesday, November 10, 2010 - 10:46 am

From: xiaohui.xin@intel.com
Date: Wed, 10 Nov 2010 17:23:28 +0800


If destructor_arg is actually a net_device pointer or similar,
you will need to take a reference count on it or similar.

Which means --> good bye performance especially on SMP.

You're going to be adding new serialization points and at
least two new atomics per packet.
--
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[PATCH v15 00/17] Provide a zero-copy method on KVM virtio ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 01/17] Add a new structure for skb buffer from ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 02/17]Add a new struct for device to manipulate ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 03/17]Add a ndo_mp_port_prep pointer to net_dev ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 04/17]Add a function make external buffer owner ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 05/17] Add a function to indicate if device use ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 06/17] Use callback to deal with skb_release_da ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 07/17]Modify netdev_alloc_page() to get externa ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 08/17]Modify netdev_free_page() to release exte ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 09/17] Don't do skb recycle, if device use exte ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 10/17]If device is in zero-copy mode first, bon ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 11/17] Add a hook to intercept external buffers ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 12/17] Add header file for mp device., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 13/17] Add mp(mediate passthru) device., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 14/17]Add a kconfig entry and make entry for mp ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 15/17] Provides multiple submits and asynchrono ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 16/17] An example how to modifiy NIC driver to ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
[PATCH v15 17/17] An example how to alloc user buffer base ..., xiaohui.xin, (Tue Nov 9, 2:03 am)
Re: [PATCH v15 00/17] Provide a zero-copy method on KVM vi ..., David Miller, (Tue Nov 9, 10:15 am)
Re: [PATCH v15 00/17] Provide a zero-copy method on KVM vi ..., xiaohui.xin, (Wed Nov 10, 2:23 am)
Re: [PATCH v15 00/17] Provide a zero-copy method on KVM vi ..., David Miller, (Wed Nov 10, 10:46 am)
RE: [PATCH v15 00/17] Provide a zero-copy method on KVM vi ..., Xin, Xiaohui, (Thu Nov 11, 1:28 am)
RE: [PATCH v15 00/17] Provide a zero-copy method on KVM vi ..., Xin, Xiaohui, (Wed Nov 17, 1:09 am)