Re: [net-next PATCH v5 3/4] net: dsa: Add Airoha AN8855 5-Port Gigabit DSA Switch driver

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On Fri, 15 Nov 2024 22:59:18 +0100 Christian Marangi wrote:
> On Thu, Nov 14, 2024 at 07:22:02PM -0800, Jakub Kicinski wrote:
> > On Tue, 12 Nov 2024 21:47:26 +0100 Christian Marangi wrote:  
> > > +	MIB_DESC(1, 0x00, "TxDrop"),
> > > +	MIB_DESC(1, 0x04, "TxCrcErr"),  
> > 
> > What is a CRC Tx error :o 
> > Just out of curiosity, not saying its worng.
> >  
> 
> From Documentation, FCS error frame due to TX FIFO underrun.

Interesting

> > > +	MIB_DESC(1, 0x08, "TxUnicast"),
> > > +	MIB_DESC(1, 0x0c, "TxMulticast"),
> > > +	MIB_DESC(1, 0x10, "TxBroadcast"),
> > > +	MIB_DESC(1, 0x14, "TxCollision"),  
> > 
> > Why can't these be rtnl stats, please keep in mind that we ask that
> > people don't duplicate in ethtool -S what can be exposed via standard
> > stats
> >   
> 
> Ok I will search for this but it does sounds like something new and not
> used by other DSA driver, any hint on where to look for examples?

It's relatively recent but I think the ops are plumbed thru to DSA.
Take a look at all the *_stats members of struct dsa_switch_ops, most
of them take a fixed format struct to fill in and the struct has some
extra kdoc on which field is what.




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