Re: [dpdk-dev] [PATCH] net/ixgbe: fix statistics error in flow control mode

["Sun, GuinanX" <guinanx.sun@intel.com>]

Hi zhaowei

> -----Original Message-----
> From: Zhao1, Wei
> Sent: Monday, May 11, 2020 9:03 AM
> To: Sun, GuinanX <guinanx.sun@intel.com>; dev@dpdk.org
> Cc: Sun, GuinanX <guinanx.sun@intel.com>; stable@dpdk.org; Guo, Jia
> <jia.guo@intel.com>
> Subject: RE: [dpdk-dev] [PATCH] net/ixgbe: fix statistics error in flow control
> mode
> 
> 
> Hi, Guinan
> 
> > -----Original Message-----
> > From: dev <dev-bounces@dpdk.org> On Behalf Of Guinan Sun
> > Sent: Friday, May 8, 2020 4:30 PM
> > To: dev@dpdk.org
> > Cc: Sun, GuinanX <guinanx.sun@intel.com>; stable@dpdk.org
> > Subject: [dpdk-dev] [PATCH] net/ixgbe: fix statistics error in flow
> > control mode
> >
> > The register autoneg can't be updated synchronously with flow control
> > mode setting in the state of port start , so NIC statistics error
> > occurs. The patch fixes the issue.
> >
> > Fixes: a524f550da6e ("net/ixgbe: fix flow control mode setting")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Guinan Sun <guinanx.sun@intel.com>
> > ---
> >  drivers/net/ixgbe/ixgbe_ethdev.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
> > b/drivers/net/ixgbe/ixgbe_ethdev.c
> > index cf5f1fe70..e6c747aef 100644
> > --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> > +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> > @@ -2543,6 +2543,8 @@ ixgbe_flow_ctrl_enable(struct rte_eth_dev *dev,
> > struct ixgbe_hw *hw)  int err;  uint32_t mflcn;
> >
> > +hw->mac.ops.setup_fc(hw);
> 
> 1. please use base code API ixgbe_setup_fc(), do not use internal function
> directly.
> 2. please more info for this patch, what register error you want to fix, and why it
> can fix.

V2 patch will be send to resolve the problems.

> 
> 
> > +
> >  err = ixgbe_fc_enable(hw);
> >
> >  /* Not negotiated is not an error case */
> > --
> > 2.17.1
>