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Re: [Qemu-devel] [ Patch 1/2] virtio-net rsc: support coalescing ipv4 tc

From: Jason Wang
Subject: Re: [Qemu-devel] [ Patch 1/2] virtio-net rsc: support coalescing ipv4 tcp traffic
Date: Fri, 18 Mar 2016 13:20:47 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1

On 03/18/2016 12:17 PM, Wei Xu wrote:
>>>>> +static ssize_t virtio_net_receive(NetClientState *nc,
>>>>> +                                  const uint8_t *buf, size_t size)
>>>>> +{
>>>>> +    if (virtio_net_rsc_bypass) {
>>>>> +        return virtio_net_do_receive(nc, buf, size);
>>>> You need a feature bit for this and compat it for older machine types.
>>>> And also need some work on virtio spec I think.
>>> yes, not sure which way is good to support this, hmp/qmp/ethtool, this
>>> is gonna to support win guest,
>>> so need a well-compatible interface, any comments?
>> I think this should be implemented through feature bits/negotiation
>> instead of something like ethtool.
> Looks this feature should be turn on/off dynamically due to the spec,
> so maybe this should be managed from the guest, is there any reference
> code for this? 

Then you may want to look at implementation of

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