Re: [dpdk-dev] [PATCH v5 2/8]i40e:support VxLAN packet identification in librte_pmd_i40e

["Liu, Jijiang" <jijiang.liu@intel.com>]

> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> Sent: Friday, October 17, 2014 3:40 PM
> To: Liu, Jijiang
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v5 2/8]i40e:support VxLAN packet
> identification in librte_pmd_i40e
> 
> 2014-10-17 05:58, Liu, Jijiang:
> > From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> > > 2014-10-11 13:55, Jijiang Liu:
> > > >  #
> > > > +# Compile tunneling UDP port support #
> > > > +CONFIG_RTE_LIBRTE_TUNNEL_UDP_PORT=4789
> > > > +
> > > > +#
> > >
> > > 1) this option is not to "Compile tunneling UDP port support"
> > Change the comment as "tunneling UDP default port configuration"
> > > 2) why is it a compile time option? should it be an API parameter or
> > > a runtime option?
> >
> > In terms of VxLAN, "IANA has assigned the value 4789 for the VXLAN UDP
> > port, and this value SHOULD be used by default as the destination UDP
> port.
> > Some early implementations of VXLAN have used other values for the
> > destination port. To enable interoperability with these
> > implementations, the destination port SHOULD be configurable."
> 
> Please, do not consider a compile time option like "configurable".
> There are some cases where the user cannot or don't want to rebuild DPDK.
> 
> > I have provided a API to configure UDP port.
> 
> OK, good.
> 
> > But a default UDP port number is needed where PF startup if current
> > mode is VxLAN mode.
> 
> Sorry, I don't understand this part.
> Why are you adding a default tunnel when initializing?
> Is it not enough to allow adding new tunnels with custom port?

Ok, I will remove this default UDP port configuration, just allow to use API to add/remove UDP port number. 

> --
> Thomas