From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tetsuya Mukawa <mukawa@igel.co.jp>
Subject: Re: [PATCH v7 2/2] vhost: Add VHOST PMD
Date: Fri, 5 Feb 2016 16:10:43 +0900
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Cc: dev@dpdk.org, ann.zhuangyanying@huawei.com, yuanhan.liu@intel.com
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
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On 2016/02/05 15:35, Yuanhan Liu wrote:
> On Fri, Feb 05, 2016 at 03:28:37PM +0900, Tetsuya Mukawa wrote:
>> On 2016/02/04 20:17, Ferruh Yigit wrote:
>>> On Thu, Feb 04, 2016 at 04:26:31PM +0900, Tetsuya Mukawa wrote:
>>>
>>> Hi Tetsuya,
>>>
>>>> The patch introduces a new PMD. This PMD is implemented as thin wrapper
>>>> of librte_vhost. It means librte_vhost is also needed to compile the PMD.
>>>> The vhost messages will be handled only when a port is started. So start
>>>> a port first, then invoke QEMU.
>>>>
>>>> The PMD has 2 parameters.
>>>>  - iface:  The parameter is used to specify a path to connect to a
>>>>            virtio-net device.
>>>>  - queues: The parameter is used to specify the number of the queues
>>>>            virtio-net device has.
>>>>            (Default: 1)
>>>>
>>>> Here is an example.
>>>> $ ./testpmd -c f -n 4 --vdev 'eth_vhost0,iface=/tmp/sock0,queues=1' -- -i
>>>>
>>>> To connect above testpmd, here is qemu command example.
>>>>
>>>> $ qemu-system-x86_64 \
>>>>         <snip>
>>>>         -chardev socket,id=chr0,path=/tmp/sock0 \
>>>>         -netdev vhost-user,id=net0,chardev=chr0,vhostforce,queues=1 \
>>>>         -device virtio-net-pci,netdev=net0,mq=on
>>>>
>>>> Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
>>> Please find some more comments, mostly minor nits,
>>>
>>> please feel free to add my ack for next version of this patch:
>>> Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
>>>
>>> <...>
>>>> diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c
>>>> new file mode 100644
>>>> index 0000000..b2305c2
>>>> --- /dev/null
>>>> +++ b/drivers/net/vhost/rte_eth_vhost.c
>>> <...>
>>>> +
>>>> +struct pmd_internal {
>>>> +	TAILQ_ENTRY(pmd_internal) next;
>>>> +	char *dev_name;
>>>> +	char *iface_name;
>>>> +	uint8_t port_id;
>>> You can also get rid of port_id too, if you keep list of rte_eth_dev.
>>> But this is not so important, keep as it is if you want to.
>> Thank you so much for checking and good suggestions.
>> I will follow your comments without below.
> You might need update the MAINTAINERS file as well.
>
> 	--yliu

Sure thanks!