From: Ye Xiaolong <xiaolong.ye@intel.com>
To: Shahaf Shuler <shahafs@mellanox.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
Maxime Coquelin <maxime.coquelin@redhat.com>,
Tiwei Bie <tiwei.bie@intel.com>,
Zhihong Wang <zhihong.wang@intel.com>,
"xiao.w.wang@intel.com" <xiao.w.wang@intel.com>,
Rami Rosen <roszenrami@gmail.com>,
Wang Haiyue <haiyue.wang@intel.com>
Subject: Re: [dpdk-dev] [PATCH v8 2/2] examples/vdpa: introduce a new sample for vDPA
Date: Thu, 17 Jan 2019 23:13:27 +0800 [thread overview]
Message-ID: <20190117151327.GA54315@intel.com> (raw)
In-Reply-To: <DB7PR05MB4426B7964F49ED9527A9D389C3830@DB7PR05MB4426.eurprd05.prod.outlook.com>
Hi,
On 01/17, Shahaf Shuler wrote:
>Hi,
>
>Going back to this merged commit,
>
>Saturday, September 29, 2018 12:48 AM, Xiaolong Ye:
>> Subject: [dpdk-dev] [PATCH v8 2/2] examples/vdpa: introduce a new sample
>> for vDPA
>>
>> The vdpa sample application creates vhost-user sockets by using the vDPA
>> backend. vDPA stands for vhost Data Path Acceleration which utilizes virtio
>> ring compatible devices to serve virtio driver directly to enable datapath
>> acceleration. As vDPA driver can help to set up vhost datapath, this
>> application doesn't need to launch dedicated worker threads for vhost
>> enqueue/dequeue operations.
>>
>> Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
>> Acked-by: Xiao Wang <xiao.w.wang@intel.com>
>> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
>> ---
>
>[...]
>
>> +
>> +Start the VMs
>> +~~~~~~~~~~~~~
>> +
>> +.. code-block:: console
>> +
>> + qemu-system-x86_64 -cpu host -enable-kvm \
>> + <snip>
>> + -mem-prealloc \
>> + -chardev socket,id=char0,path=<socket_file created in above steps> \
>> + -netdev type=vhost-user,id=vdpa,chardev=char0 \
>> + -device
>> + virtio-net-pci,netdev=vdpa,mac=00:aa:bb:cc:dd:ee,page-per-vq=on \
>
>
>It doesn't seems like qemu has the id=vdpa and netdev=vdpa options.
>Grepping vdpa on qemu returns empty.
>
>Am using QEMU v3.1.0-513-gfb177a0. Commit head is fb177a036f2e ("MAINTAINERS: Mark RISC-V as Supported").
>
>Did I missed anything?
>
Not quite sure about your question here, the vdpa used in above qemu cmdline
is just a normal string, you can replace it with other string like
-netdev type=vhost-user,id=mynet,chardev=char0 \
-device virtio-net-pci,netdev=mynet,...
The major support for vdpa is done in dpdk side as the vhost user backend, qemu
will use normal vhost user protocol to communicate with it.
Thanks,
Xiaolong
next prev parent reply other threads:[~2019-01-17 15:13 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-20 22:28 [dpdk-dev] [PATCH v3 0/2] introduce vdpa sample Xiaolong Ye
2018-09-20 22:28 ` [dpdk-dev] [PATCH v3 1/2] vhost: introduce API to get vDPA device number Xiaolong Ye
2018-09-20 22:28 ` [dpdk-dev] [PATCH v3 2/2] examples/vdpa: introduce a new sample for vDPA Xiaolong Ye
2018-09-21 5:07 ` Wang, Xiao W
2018-09-22 11:04 ` Ye Xiaolong
2018-09-24 8:42 ` [dpdk-dev] [PATCH v4 0/2] introduce vdpa sample Xiaolong Ye
2018-09-24 8:42 ` [dpdk-dev] [PATCH v4 1/2] vhost: introduce API to get vDPA device number Xiaolong Ye
2018-09-24 8:42 ` [dpdk-dev] [PATCH v4 2/2] examples/vdpa: introduce a new sample for vDPA Xiaolong Ye
2018-09-24 4:12 ` Wang, Xiao W
2018-09-24 21:30 ` Ye Xiaolong
2018-09-25 12:07 ` [dpdk-dev] [PATCH v5 0/2] introduce vdpa sample Xiaolong Ye
2018-09-25 12:07 ` [dpdk-dev] [PATCH v5 1/2] vhost: introduce API to get vDPA device number Xiaolong Ye
2018-09-25 12:07 ` [dpdk-dev] [PATCH v5 2/2] examples/vdpa: introduce a new sample for vDPA Xiaolong Ye
2018-09-25 8:32 ` Wang, Xiao W
2018-09-26 9:06 ` [dpdk-dev] [PATCH v6 0/2] introduce vdpa sample Xiaolong Ye
2018-09-26 3:15 ` Wang, Xiao W
2018-09-26 9:06 ` [dpdk-dev] [PATCH v6 1/2] vhost: introduce API to get vDPA device number Xiaolong Ye
2018-09-26 9:06 ` [dpdk-dev] [PATCH v6 2/2] examples/vdpa: introduce a new sample for vDPA Xiaolong Ye
2018-09-27 16:37 ` Maxime Coquelin
2018-09-28 7:32 ` Ye Xiaolong
2018-09-28 11:23 ` [dpdk-dev] [PATCH v7 0/2] introduce vdpa sample Xiaolong Ye
2018-09-28 11:23 ` [dpdk-dev] [PATCH v7 1/2] vhost: introduce API to get vDPA device number Xiaolong Ye
2018-09-28 11:23 ` [dpdk-dev] [PATCH v7 2/2] examples/vdpa: introduce a new sample for vDPA Xiaolong Ye
2018-09-28 7:31 ` Maxime Coquelin
2018-09-28 14:33 ` Ye Xiaolong
2018-09-28 7:49 ` Maxime Coquelin
2018-09-28 15:17 ` Ye Xiaolong
2018-09-28 8:31 ` Maxime Coquelin
2018-09-28 17:37 ` Ye Xiaolong
2018-09-28 21:47 ` [dpdk-dev] [PATCH v8 0/2] introduce vdpa sample Xiaolong Ye
2018-09-28 21:47 ` [dpdk-dev] [PATCH v8 1/2] vhost: introduce API to get vDPA device number Xiaolong Ye
2018-10-02 13:19 ` Ferruh Yigit
2018-10-03 5:53 ` Ye Xiaolong
2018-09-28 21:47 ` [dpdk-dev] [PATCH v8 2/2] examples/vdpa: introduce a new sample for vDPA Xiaolong Ye
2018-10-02 14:03 ` Ferruh Yigit
2018-10-03 6:04 ` Ye Xiaolong
2018-10-03 7:48 ` Ferruh Yigit
2019-01-17 14:37 ` Shahaf Shuler
2019-01-17 15:13 ` Ye Xiaolong [this message]
2019-01-17 15:17 ` Shahaf Shuler
2018-10-02 12:51 ` [dpdk-dev] [PATCH v8 0/2] introduce vdpa sample Maxime Coquelin
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