Re: [Intel-wired-lan] [PATCH] igc: Mask replay rollover/timeout errors in I225_LMVP

[Paul Menzel]

[Cc: +Bjorn, +linux-pci]

Dear Leon, dear Rajat,


Am 01.01.23 um 09:32 schrieb Leon Romanovsky:
> On Thu, Dec 29, 2022 at 05:56:40PM +0530, Rajat Khandelwal wrote:
> > The CPU logs get flooded with replay rollover/timeout AER errors in
> > the system with i225_lmvp connected, usually inside thunderbolt devices.
> >
> > One of the prominent TBT4 docks we use is HP G4 Hook2, which incorporates
> > an Intel Foxville chipset, which uses the igc driver.
> > On connecting ethernet, CPU logs get inundated with these errors. The point
> > is we shouldn't be spamming the logs with such correctible errors as it
> > confuses other kernel developers less familiar with PCI errors, support
> > staff, and users who happen to look at the logs.
> >
> > Signed-off-by: Rajat Khandelwal <rajat.khandelwal@xxxxxxxxxxxxxxx>
> > ---
> >   drivers/net/ethernet/intel/igc/igc_main.c | 28 +++++++++++++++++++++--
> >   1 file changed, 26 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
> > index ebff0e04045d..a3a6e8086c8d 100644
> > --- a/drivers/net/ethernet/intel/igc/igc_main.c
> > +++ b/drivers/net/ethernet/intel/igc/igc_main.c
> > @@ -6201,6 +6201,26 @@ u32 igc_rd32(struct igc_hw *hw, u32 reg)
> >   	return value;
> >   }
> >   
> > +#ifdef CONFIG_PCIEAER
> > +static void igc_mask_aer_replay_correctible(struct igc_adapter *adapter)
> > +{
> > +	struct pci_dev *pdev = adapter->pdev;
> > +	u32 aer_pos, corr_mask;
> > +
> > +	if (pdev->device != IGC_DEV_ID_I225_LMVP)
> > +		return;
> > +
> > +	aer_pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
> > +	if (!aer_pos)
> > +		return;
> > +
> > +	pci_read_config_dword(pdev, aer_pos + PCI_ERR_COR_MASK, &corr_mask);
> > +
> > +	corr_mask |= PCI_ERR_COR_REP_ROLL | PCI_ERR_COR_REP_TIMER;
> > +	pci_write_config_dword(pdev, aer_pos + PCI_ERR_COR_MASK, corr_mask);
>
> Shouldn't this igc_mask_aer_replay_correctible function be implemented
> in drivers/pci/quirks.c and not in igc_probe()?

Probably. Though I think, the PCI quirk file, is getting too big.


Kind regards,

Paul