[dpdk-stable] [dpdk-dev] [PATCH] net/i40e: fix SFP I X722 with FW4.16

[Zhang, Qi Z]

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Weifeng Li
> Sent: Sunday, January 10, 2021 4:34 PM
> To: Xing, Beilei <beilei.xing at intel.com>; Guo, Jia <jia.guo at intel.com>
> Cc: dev at dpdk.org; Weifeng Li <liweifeng96 at 126.com>; stable at dpdk.org
> Subject: [dpdk-dev] [PATCH] net/i40e: fix SFP I X722 with FW4.16
> 
> When NVM API version is 1.7 or above adminq operation to set TPID is set as
> supported. This cause using adminq instead of registers.
> For SFP_I_X722 FW4.16, reported NVM API version is 1.8, and this cause
> adminq operation to set as supported but it is not supported on FW4.16
> Additional check added for SFP_I_X722 to not enable adminq operation.

The commit log can be simplified to 
Disable "802.1ad frames ability" for SFP_I_X722 as it does not support.

> 
> Fixes: 9efa8d28b4da ("net/i40e: fix SFP X722 with FW4.16")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Weifeng Li <liweifeng96 at 126.com>
> ---
>  drivers/net/i40e/i40e_ethdev.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index 1462248..a07879c 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -1550,7 +1550,8 @@ eth_i40e_dev_init(struct rte_eth_dev *dev, void
> *init_params __rte_unused)
>  		return -EIO;
>  	}
>  	/* Firmware of SFP x722 does not support adminq option */

This is not the problem of you patch, but the comment is totally misleading, what does "adminq option" means?
could you help to correct in v2?, I40E_HW_FLAG_802_1AD_CAPABLE should means"802.1ad frames ability"

> -	if (hw->device_id == I40E_DEV_ID_SFP_X722)
> +	if (hw->device_id == I40E_DEV_ID_SFP_X722 ||
> +		hw->device_id == I40E_DEV_ID_SFP_I_X722)
>  		hw->flags &= ~I40E_HW_FLAG_802_1AD_CAPABLE;
> 
>  	PMD_INIT_LOG(INFO, "FW %d.%d API %d.%d NVM %02d.%02d.%02d
> eetrack %04x",
> --
> 2.9.5