[dpdk-dev] [PATCH] virtio: fix rx ring descriptor starvation

[Xie, Huawei]

On 11/25/2015 9:47 AM, Yuanhan Liu wrote:
> On Tue, Nov 24, 2015 at 10:20:22PM +0100, Thomas Monjalon wrote:
>> Any review, please?
> Huawei, would you review it? Sorry that I've not read too much
> code about virtio PMD driver yet.
Np. will do it by end of this week.
>
>       --yliu
>
>
>> 2015-11-13 09:30, Tom Kiely:
>>> If all rx descriptors are processed while transient
>>> mbuf exhaustion is present, the rx ring ends up with
>>> no available descriptors. Thus no packets are received
>>> on that ring. Since descriptor refill is performed post
>>> rx descriptor processing, in this case no refill is
>>> ever subsequently performed resulting in permanent rx
>>> traffic drop.
>>>
>>> Signed-off-by: Tom Kiely <tkiely at brocade.com>