Is it allowed to copy hyper-v drivers from FreeBSD 10 and packed it into FreeBSD 9.2

[Adrian Chadd]

On 22 November 2015 at 21:58, Hongjiang Zhang <honzhan at microsoft.com> wrote:
> Hi,
>
> Some people, who used FreeBSD 9.2 and back-port network driver for Hyper-v from FreeBSD 10, encountered a network issue. They installed 2 VM (FreeBSD 9.2 with the customized FreeBSD kernel) on Azure. Network went offline very soon when the big file (~320M byte) is copied from one VM to anther through "scp". If TSO is disabled through "sysctl -w net.inet.tcp.tso=0", this issue will be alleviated but cannot be eliminated. I did not figure out why.
>
> I have checked the release notes of FreeBSD 9.2/9.3/10, but did not find anything which blocked the back-port. It is supposed 9.2 allows the back-ported Hyper-v drivers from 10. Is this assumption correct?

Hi!

It may be something to do with maximum mbufs per packet or some other
limit like that. Is there a lot of interest in backporting the latest
hyperv driver to 9.2?


-a

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