vhost-net: netfilter support for RX path

[RFC 0/3] vhost-net: netfilter support for RX path

Posted by Cindy Lu 1 day, 9 hours ago

This series adds a minimal vhost-net filter support for RX.
It introduces a UAPI for VHOST_NET_SET_FILTER and a simple
SOCK_SEQPACKET message header. The kernel side keeps a filter
socket reference and routes RX packets to userspace when
it was enabled.

Tested
- vhost=on  and vhost=off

Cindy Lu (3):
  uapi: vhost: add vhost-net netfilter offload API
  vhost/net: add netfilter socket support
  vhost/net: add RX netfilter offload path

 drivers/vhost/net.c        | 338 +++++++++++++++++++++++++++++++++++++
 include/uapi/linux/vhost.h |  20 +++
 2 files changed, 358 insertions(+)

-- 
2.52.0

Re: [RFC 0/3] vhost-net: netfilter support for RX path

Posted by Jason Wang 21 hours ago

On Sun, Feb 8, 2026 at 10:34 PM Cindy Lu <lulu@redhat.com> wrote:
>
> This series adds a minimal vhost-net filter support for RX.
> It introduces a UAPI for VHOST_NET_SET_FILTER and a simple
> SOCK_SEQPACKET message header. The kernel side keeps a filter
> socket reference and routes RX packets to userspace when
> it was enabled.

I wonder if a packet socket is sufficient or is this for macvtap as well?

Thanks

>
> Tested
> - vhost=on  and vhost=off
>
> Cindy Lu (3):
>   uapi: vhost: add vhost-net netfilter offload API
>   vhost/net: add netfilter socket support
>   vhost/net: add RX netfilter offload path
>
>  drivers/vhost/net.c        | 338 +++++++++++++++++++++++++++++++++++++
>  include/uapi/linux/vhost.h |  20 +++
>  2 files changed, 358 insertions(+)
>
> --
> 2.52.0
>