Re: [dpdk-dev] [PATCH] [RFC] ether: standardize getting the port by name

[Thomas Monjalon <thomas@monjalon.net>]

30/11/2017 22:21, Stephen Hemminger:
> On Thu, 30 Nov 2017 18:35:11 +0100
> Thomas Monjalon <thomas@monjalon.net> wrote:
> 
> > 30/11/2017 18:15, Stephen Hemminger:
> > > Some thoughts.
> > > 1) Not all devices are PCI; look at recent VMBUS  
> > 
> > Yes, we need a syntax which works for every devices.
> > I suggest to use the prefix "pci:" before the PCI id.
> > We need also a prefix and ids for NXP buses.
> > We could use "vmbus:" before VMBUS ids.
> > How VMBUS ids look like?
> > 
> > > 2) The name may have to be set before MAC address is determined on boot.  
> > 
> > I don't understand this comment.
> > Do you mean MAC may be unknown when starting DPDK?
> 
> The MAC be known by the hardware, but the device would have to be
> created before using  hardware to read it.

Indeed, it is a problem if we want to use this syntax for blacklist.


> > > 3) The names themselves are not persistent or human friendly. This is hard
> > >    see the effort udev goes to.  
> > 
> > Yes udev has a syntax to identify devices. It can be inspiring.
> > Qemu may also be inspiring:
> > 	https://github.com/qemu/qemu/blob/master/docs/qdev-device-use.txt