Re: [dpdk-dev] [PATCH RFC 2/4] vhost: make buf vector for scatter RX local.

["Xie, Huawei" <huawei.xie@intel.com>]

On 2/19/2016 3:31 PM, Ilya Maximets wrote:
> On 19.02.2016 10:06, Yuanhan Liu wrote:
>> On Fri, Feb 19, 2016 at 09:32:41AM +0300, Ilya Maximets wrote:
>>> Array of buf_vector's is just an array for temporary storing information
>>> about available descriptors. It used only locally in virtio_dev_merge_rx()
>>> and there is no reason for that array to be shared.
>>>
>>> Fix that by allocating local buf_vec inside virtio_dev_merge_rx().
>>>
>>> Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
>>> ---
>>>  lib/librte_vhost/rte_virtio_net.h |  1 -
>>>  lib/librte_vhost/vhost_rxtx.c     | 45 ++++++++++++++++++++-------------------
>>>  2 files changed, 23 insertions(+), 23 deletions(-)
>>>
>>> diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
>>> index 10dcb90..ae1e4fb 100644
>>> --- a/lib/librte_vhost/rte_virtio_net.h
>>> +++ b/lib/librte_vhost/rte_virtio_net.h
>>> @@ -91,7 +91,6 @@ struct vhost_virtqueue {
>>>  	int			kickfd;			/**< Currently unused as polling mode is enabled. */
>>>  	int			enabled;
>>>  	uint64_t		reserved[16];		/**< Reserve some spaces for future extension. */
>>> -	struct buf_vector	buf_vec[BUF_VECTOR_MAX];	/**< for scatter RX. */
>>>  } __rte_cache_aligned;
>> I like this kind of cleanup, however, it breaks ABI.
> Should I prepare version of this patch with field above marked as
> deprecated and add note to doc/guides/rel_notes/release_16_04.rst
> about future deletion?

Ilya, you could follow the ABI process:
http://dpdk.org/doc/guides/contributing/versioning.html

>
> Best regards, Ilya Maximets.
>