[ovs-dev] [PATCHv11] netdev-afxdp: add new netdev type for AF_XDP.

[Ben Pfaff]

On Tue, Jun 11, 2019 at 08:47:19AM +0200, Eelco Chaudron wrote:
> 
> 
> On 8 Jun 2019, at 6:48, William Tu wrote:
> 
> > > > > +  ethtool -L enp2s0 combined 1
> > > > > +  ovs-vsctl set Open_vSwitch . other_config:pmd-cpu-mask=0x10
> > > > > +  ovs-vsctl add-port br0 enp2s0 -- set interface enp2s0
> > > > > type="afxdp"
> > > > > \
> > > > > +    options:n_rxq=1 options:xdpmode=drv \
> > > > > +    other_config:pmd-rxq-affinity="0:4"
> > 
> > another feature I'm thinking about to add is a new options
> > for loading custom XDP program
> > 
> > For example:
> > ovs-vsctl add-port br0 enp2s0 -- set interface enp2s0 type="afxdp"
> >     options:n_rxq=1 options:xdpmode=drv
> >     options:xdp_prog=/path/to/xdp.o
> > 
> > If users do not specify the path, then it is using the libbpf's default
> > program
> > (which forwards all packets to userspace)
> > 
> > If users want to use their own xdp object, then this option can load the
> > xdp object file from the path.
> 
> This might be useful, specially if you would like to do some experiments.

There could be a security risk here depending on how we sanitize the
path.