netdev - Re: [Intel-wired-lan] [iwl-next v1] ice: Check all ice_vsi

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Date: Tue, 11 Jun 2024 11:01:55 +0200
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Karen Ostrowska <karen.ostrowska@...el.com>,
 Eric Joyner <eric.joyner@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
 Przemek Kitszel <przemyslaw.kitszel@...el.com>,
 Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Subject: Re: [Intel-wired-lan] [iwl-next v1] ice: Check all ice_vsi_rebuild()
 errors in function

Dear Eric, dear Karen,


Thank you for the patch.


Am 28.05.24 um 11:01 schrieb Karen Ostrowska:
> From: Eric Joyner <eric.joyner@...el.com>
> 
> Check the return value from ice_vsi_rebuild() and prevent the usage of
> incorrectly configured VSI.

Was this found during code review, or is this seen in practice? If the 
latter, please document the test system and test case.

> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
> Signed-off-by: Eric Joyner <eric.joyner@...el.com>
> Signed-off-by: Karen Ostrowska <karen.ostrowska@...el.com>

Should there be a Fixes: tag?


Kind regards,

Paul


> ---
>   drivers/net/ethernet/intel/ice/ice_main.c | 12 ++++++++++--
>   1 file changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
> index f60c022f7960..e8c30b1730a6 100644
> --- a/drivers/net/ethernet/intel/ice/ice_main.c
> +++ b/drivers/net/ethernet/intel/ice/ice_main.c
> @@ -4135,15 +4135,23 @@ int ice_vsi_recfg_qs(struct ice_vsi *vsi, int new_rx, int new_tx, bool locked)
>   
>   	/* set for the next time the netdev is started */
>   	if (!netif_running(vsi->netdev)) {
> -		ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT);
> +		err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT);
> +		if (err)
> +			goto rebuild_err;
>   		dev_dbg(ice_pf_to_dev(pf), "Link is down, queue count change happens when link is brought up\n");
>   		goto done;
>   	}
>   
>   	ice_vsi_close(vsi);
> -	ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT);
> +	err = ice_vsi_rebuild(vsi, ICE_VSI_FLAG_NO_INIT);
> +	if (err)
> +		goto rebuild_err;
> +
>   	ice_pf_dcb_recfg(pf, locked);
>   	ice_vsi_open(vsi);
> +
> +rebuild_err:
> +	dev_err(ice_pf_to_dev(pf), "Error during VSI rebuild: %d. Unload and reload the driver.\n", err);
>   done:
>   	clear_bit(ICE_CFG_BUSY, pf->state);
>   	return err;