svn commit: r340461 - in stable/12/sys/dev: netmap virtio/network

[Vincenzo Maffione]

No worries

Cheers,
  Vincenzo

On Thu, Nov 15, 2018, 9:46 PM Rodney W. Grimes <
freebsd at pdx.rh.cn85.dnsmgr.net wrote:

> > Author: vmaffione
> > Date: Thu Nov 15 18:51:37 2018
> > New Revision: 340461
> > URL: https://svnweb.freebsd.org/changeset/base/340461
> >
> > Log:
> >   MFC :r340436
> >
> >   vtnet: fix netmap support
> >
> >   netmap(4) support for vtnet(4) was incomplete and had multiple bugs.
> >   This commit fixes those bugs to bring netmap on vtnet in a functional
> state.
> >
> >   Changelist:
> >     - handle errors returned by virtqueue_enqueue() properly (they were
> >       previously ignored)
> >     - make sure netmap XOR rest of the kernel access each virtqueue.
> >     - compute the number of netmap slots for TX and RX separately,
> according to
> >       whether indirect descriptors are used or not for a given virtqueue.
> >     - make sure sglist are freed according to their type (mbufs or netmap
> >       buffers)
> >     - add support for mulitiqueue and netmap host (aka sw) rings.
> >     - intercept VQ interrupts directly instead of intercepting them in
> txq_eof
> >       and rxq_eof. This simplifies the code and makes it easier to make
> sure
> >       taskqueues are not running for a VQ while it is in netmap mode.
> >     - implement vntet_netmap_config() to cope with changes in the number
> of queues.
> >
> >   Sponsored by:       Sunny Valley Networks
> >   Differential Revision:      https://reviews.freebsd.org/D17916
> >   Approved by: re (gjb)
>
> Thank you for getting this merged early, intime for RC1.
>
>
> --
> Rod Grimes
> rgrimes at freebsd.org
>