[PATCH v3 1/3] net/iavf: support LLDP Tx via mbuf ptype or dynfield

[Loftus, Ciara]

> > @@ -688,6 +690,15 @@ Usage::
> >
> >      testpmd> set tx lldp on
> >
> > +An alternative method for transmitting LLDP packets is to set the
> ``packet_type`` of
> > +the mbuf to ``RTE_PTYPE_L2_ETHER_LLDP``. This, in conjunction with
> enabling the
> > +``enable_ptype_lldp`` devarg will cause such packets to be transmitted::
> > +
> > +    -a 0000:xx:xx.x,enable_ptype_lldp=1
> > +
> > +When ``enable_ptype_lldp`` is not set (default), ptype-based LLDP detection
> is
> > +disabled, but LLDP transmission via the dynamic mbuf field remains
> available.
> > +
> 
> The previous method describes testpmd use. Do we need such a description
> here too?
> 
> >

The ptype method doesn't require any specific enabling steps in testpmd, it is
enabled only via the devarg. I've updated the documentation to make that
clearer.