[dpdk-dev] [PATCH v2] vhost: fix corner case for enqueue operation

[Maxime Coquelin]

On 09/27/2018 08:05 PM, Kevin Traynor wrote:
> On 09/27/2018 01:37 PM, Maxime Coquelin wrote:
>>
>>
>> On 09/27/2018 02:24 PM, Maxime Coquelin wrote:
>>>
>>>
>>> On 09/17/2018 05:54 AM, Jiayu Hu wrote:
>>>> When perform enqueue operations on the split and packed ring,
>>> s/perform/performing/
>>> s/ring/rings/
>>>> if the reserved buffer length from the descriptor table execeeds
>>>> 65535, the returned length by fill_vec_buf_split/_packed() is
>>>> overflowed. This patch is to avoid this corner case.
>>> s/overflowed/overflows/
>>>>
>>>> Fixes: f689586b ("vhost: shadow used ring update")
>>>> Fixes: fd68b473 ("vhost: use buffer vectors in dequeue path")
>>>> Fixes: 2f3225a7 ("vhost: add vector filling support for packed ring")
>>>> Fixes: 37f5e79a ("vhost: add shadow used ring support for packed rings")
>>>> Fixes: a922401f ("vhost: add Rx support for packed ring")
>>>> Fixes: ae999ce4 ("vhost: add Tx support for packed ring")
>>>>
> 
> It breaks the record for number of Fixes? :-)

This is exhaustive! :)
> 
> I think relevant for stables also - any reason why not?

Forgot to mention, but I added it while applying.

FYI, it targets v18.08.

>>>> Signed-off-by: Jiayu Hu <jiayu.hu at intel.com>
>>>> ---
>>>>    lib/librte_vhost/virtio_net.c | 20 +++++++++++---------
>>>>    1 file changed, 11 insertions(+), 9 deletions(-)
>>>>
>>>
>>> Other than that, the patch looks good to me. Thanks for fixing it.
>>>
>>> Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
>>>
>>> Maxime
>>
>> Applied to dpdk-next-virtio/master with commit message fix.
>>
>> Thanks,
>> Maxime
>