On Thu, Dec 19, 2019 at 04:41:25PM -0800, William Tu wrote:
> Currently the performance of sending packets from userspace
> ovs to kernel veth device is pretty bad as reported from YiYang[1].
> The patch adds AF_PACKET v3, tpacket v3, as another way to
> tx/rx packet to linux device, hopefully showing better performance.
> 
> AF_PACKET v3 should get closed to 1Mpps, as shown[2]. However,
> my current patch using iperf tcp shows only 1.4Gbps, maybe
> I'm doing something wrong.  Also DPDK has similar implementation
> using AF_PACKET v2[3].  This is still work-in-progress but any
> feedbacks are welcome.

Is there a good reason that this is implemented as a new kind of netdev
rather than just a new way for the existing netdev implementation to do
packet i/o?
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