Re: [dpdk-stable] [dpdk-dev] [PATCH v4] net/ixgbe: fix flow ctrl mode setting

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

Hi ,zhaowei

> -----Original Message-----
> From: Zhao1, Wei
> Sent: Saturday, May 9, 2020 3:35 PM
> To: Sun, GuinanX <guinanx.sun@intel.com>; dev@dpdk.org
> Cc: Lu, Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming
> <qiming.yang@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; Sun, GuinanX
> <guinanx.sun@intel.com>; stable@dpdk.org; Guo, Jia <jia.guo@intel.com>
> Subject: RE: [dpdk-dev] [PATCH v4] net/ixgbe: fix flow ctrl mode setting
> 
> Hi, guinan
> 
>  In this patch, you have add a new parameter of mac_ctrl_frame_fwd, it should
> not be clear in ixgbe_dev_stop(), Or it will be over write when do port reset, and
> also you should add mac_ctrl_frame_fwd in ixgbe_flow_ctrl_get() for FC info
> get.
> Although this patch has been merged, please commit fix patch for it, thanks!
> 

For this question, I need to confirm the requirements with Konieczny TomaszX before I can decide whether to make changes.

> 
> 
> > -----Original Message-----
> > From: dev <dev-bounces@dpdk.org> On Behalf Of Guinan Sun
> > Sent: Tuesday, February 18, 2020 11:40 AM
> > To: dev@dpdk.org
> > Cc: Lu, Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming
> > <qiming.yang@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; Sun,
> > GuinanX <guinanx.sun@intel.com>; stable@dpdk.org
> > Subject: [dpdk-dev] [PATCH v4] net/ixgbe: fix flow ctrl mode setting
> >
> > When the port starts, the hw register is reset first, and then the
> > required parameters are set again.
> > If the parameters to be used are not set after resetting the register,
> > a read register error will occur. This patch is used to fix the problem.
> >
> > Fixes: af75078fece3 ("first public release")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Guinan Sun <guinanx.sun@intel.com>
> > ---
> > v4: changes
> > * rebase to dpdk-next-net-intel
> >
> > v3: changes
> > * wrap duplication code into a function
> > * Modify checkpatch warnings
> >
> > v2: changes
> > * Modify the initial value of requested_mode and current_mode
> > ---
> >  drivers/net/ixgbe/ixgbe_ethdev.c | 76
> > +++++++++++++++++++++----------- drivers/net/ixgbe/ixgbe_ethdev.h |  1
> > +
> >  2 files changed, 51 insertions(+), 26 deletions(-)
> >
> > diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
> > b/drivers/net/ixgbe/ixgbe_ethdev.c
> > index 3aab24e82..08b4cc689 100644
> > --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> > +}
> > +
> >  err = ixgbe_dev_rxtx_start(dev);
> >  if (err < 0) {
> >  PMD_INIT_LOG(ERR, "Unable to start rxtx queues"); @@ -2900,6
> > +2939,8 @@ ixgbe_dev_stop(struct rte_eth_dev *dev)
> >
> >  adapter->rss_reta_updated = 0;
> >
> > +adapter->mac_ctrl_frame_fwd = 0;
> > +
> 
> Delete it please.
> 
> 
> 
> 
>