netdev - Re: [net-next v2 14/17] i40e: enable PTP

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Date:	Fri, 10 Jan 2014 21:42:51 +0000
From:	"Keller, Jacob E" <jacob.e.keller@...el.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
CC:	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"gospo@...hat.com" <gospo@...hat.com>,
	"sassmann@...hat.com" <sassmann@...hat.com>,
	Richard Cochran <richardcochran@...il.com>,
	"Vick, Matthew" <matthew.vick@...el.com>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
Subject: Re: [net-next v2 14/17] i40e: enable PTP

On Fri, 2014-01-10 at 20:37 +0000, Ben Hutchings wrote:
> On Fri, 2014-01-10 at 12:30 -0800, Jeff Kirsher wrote:
> > From: Jacob Keller <jacob.e.keller@...el.com>
> > 
> > New feature: Enable PTP support in the i40e driver.
> > 
> > Change-ID: I6a8e799f582705191f9583afb1b9231a8db96cc8
> > Cc: Richard Cochran <richardcochran@...il.com>
> > Cc: Ben Hutchings <bhutchings@...arflare.com>
> > Signed-off-by: Matthew Vick <matthew.vick@...el.com>
> > Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
> > Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
> > ---
> >  drivers/net/ethernet/intel/Kconfig             |   1 +
> >  drivers/net/ethernet/intel/i40e/Makefile       |   1 +
> >  drivers/net/ethernet/intel/i40e/i40e.h         |  26 +
> >  drivers/net/ethernet/intel/i40e/i40e_ethtool.c |  33 +-
> >  drivers/net/ethernet/intel/i40e/i40e_main.c    |  47 +-
> >  drivers/net/ethernet/intel/i40e/i40e_ptp.c     | 662 +++++++++++++++++++++++++
> >  drivers/net/ethernet/intel/i40e/i40e_txrx.c    |  53 ++
> >  drivers/net/ethernet/intel/i40e/i40e_txrx.h    |   3 +
> >  8 files changed, 824 insertions(+), 2 deletions(-)
> >  create mode 100644 drivers/net/ethernet/intel/i40e/i40e_ptp.c
> > 
> > diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
> > index 9fb2eb8..333bb54 100644
> > --- a/drivers/net/ethernet/intel/Kconfig
> > +++ b/drivers/net/ethernet/intel/Kconfig
> [...]
> > +void i40e_ptp_init(struct i40e_pf *pf)
> > +{
> > +	struct i40e_hw *hw = &pf->hw;
> > +	struct net_device *netdev = pf->vsi[pf->lan_vsi]->netdev;
> > +
> > +	strncpy(pf->ptp_caps.name, netdev->name, sizeof(pf->ptp_caps.name));
> [...]
> 
> I recommended using the *driver* name as the clock name.  The net device
> doesn't even have a proper name at this point.
> 
> Ben.
> 

We use netdev->name a few lines farther down.. should that be changed as
well? Sorry about this one. The ixgbe driver initializes clock at open
instead of at init, so it has a valid clock name already.

Regards,
Jake