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

Kevin Traynor ktraynor at redhat.com
Thu Sep 27 20:05:50 CEST 2018


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? :-)

I think relevant for stables also - any reason why not?

>>> 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



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