[dpdk-dev] [v2] net/i40e: fix SFP X722 not work with FW4.16

[Wang, Haiyue]

> -----Original Message-----
> From: Zhang, Qi Z
> Sent: Friday, July 19, 2019 08:57
> To: Zhang, Xiao <xiao.zhang at intel.com>; dev at dpdk.org
> Cc: Xing, Beilei <beilei.xing at intel.com>; Wang, Haiyue <haiyue.wang at intel.com>
> Subject: RE: [v2] net/i40e: fix SFP X722 not work with FW4.16
> 
> 
> 
> > -----Original Message-----
> > From: Zhang, Xiao
> > Sent: Friday, July 19, 2019 6:52 AM
> > To: dev at dpdk.org
> > Cc: Xing, Beilei <beilei.xing at intel.com>; Wang, Haiyue
> > <haiyue.wang at intel.com>; Zhang, Qi Z <qi.z.zhang at intel.com>; Zhang, Xiao
> > <xiao.zhang at intel.com>
> > Subject: [v2] net/i40e: fix SFP X722 not work with FW4.16
> 
> Please add fix line and Cc stable.
> Fixes: 73cd7d6dc8e1 ("net/i40e: use set switch AQ instead of register setting")
> 
> >
> > FW4.16 of SFP X722 does not support setting TPID by set_switch_config
> > adminq operation, for firmware version less than 4.16 TPID is set by register
> > instead. For device SFP X722, disable adminq flag to follow the same path with
> > old firmware version to make it work.
> >
> > Signed-off-by: Xiao Zhang <xiao.zhang at intel.com>
> > ---
> > v2
> > Unset adminq flag instead of only checking device id when set TPID.
> > v1
> > Check device id when setting TPID, use adminq if not SFP X722, else use
> > register.
> > ---
> >  drivers/net/i40e/i40e_ethdev.c | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> > index 2b9fc45..2b2c877 100644
> > --- a/drivers/net/i40e/i40e_ethdev.c
> > +++ b/drivers/net/i40e/i40e_ethdev.c
> > @@ -1358,6 +1358,10 @@ eth_i40e_dev_init(struct rte_eth_dev *dev, void
> > *init_params __rte_unused)
> >  		PMD_INIT_LOG(ERR, "Failed to init adminq: %d", ret);
> >  		return -EIO;
> >  	}
> > +	/* Firmware of SFP x722 does not support adminq option */
> > +	if (hw->device_id == I40E_DEV_ID_SFP_X722)
> > +		hw->flags &= ~I40E_HW_FLAG_802_1AD_CAPABLE;
> > +
The commit log says some version like FW4.16 doesn't support ADQ, but this line
of code means all FW doesn't support ADQ. Which one is right ? :-)

> >  	PMD_INIT_LOG(INFO, "FW %d.%d API %d.%d NVM %02d.%02d.%02d
> > eetrack %04x",
> >  		     hw->aq.fw_maj_ver, hw->aq.fw_min_ver,
> >  		     hw->aq.api_maj_ver, hw->aq.api_min_ver,
> > --
> > 2.7.4