[dpdk-dev] [PATCH v3] virtio: split virtio rx/tx queue

[Xie, Huawei]

On 6/1/2016 3:13 PM, Yuanhan Liu wrote:
> On Mon, May 30, 2016 at 05:06:20PM +0800, Huawei Xie wrote:
>> We keep a common vq structure, containing only vq related fields,
>> and then split others into RX, TX and control queue respectively.
>>
>> Signed-off-by: Huawei Xie <huawei.xie at intel.com>
>> ---
>> v2:
>> - don't split virtio_dev_rx/tx_queue_setup
>> v3:
>> - fix some 80 char warnings
>> - fix other newer version checkpatch warnings
>> - remove '\n' in PMD_RX_LOG
> Weird, I still saw them.

Maybe missed this.


>
> Besides that, I found a crash issue with this patch applied. You could
> easily reproduce it by:
>
>     testpmd> start tx_first
>     testpmd> quit
>
>     [82774.055297] testpmd[9661]: segfault at 94 ip 00000000004f7ef0 sp 00007ffcb1fa
>     66c0 error 4 in testpmd[400000+25b000]
>     ./t.pmd: line 11:  9661 Segmentation fault           (core dumped) $RTE_SDK/$RTE
>     _TARGET/app/testpmd -c 0x1f -n 4 -- --nb-cores=4 -i --disable-hw-vlan --txqflags
>      0xf00 --rxq=$nr_queues --txq=$nr_queues --rxd=256 --txd=256
>
> 	--yliu
>

Couldn't reproduce. Seems like resource free issue. Do you test with
multiple queues?