[PATCH iwl-next] ice: Fix SRIOV LAG disable on non-compliant aggreagate

[PATCH iwl-next] ice: Fix SRIOV LAG disable on non-compliant aggreagate

[Dave Ertman]

If an attribute of an aggregate interface disqualifies it from supporting
SRIOV, the driver will unwind the SRIOV support.  Currently the driver is
clearing the feature bit for all interfaces in the aggregate, but this is
not allowing the other interfaces to unwind successfully on driver unload.

Only clear the feature bit for the interface that is currently unwinding.

Fixes: bf65da2eb279 ("ice: enforce interface eligibility and add messaging for SRIOV LAG")
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_lag.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_lag.c b/drivers/net/ethernet/intel/ice/ice_lag.c
index 2c96d1883e19..c9071228b1ea 100644
--- a/drivers/net/ethernet/intel/ice/ice_lag.c
+++ b/drivers/net/ethernet/intel/ice/ice_lag.c
@@ -1513,17 +1513,12 @@ static void ice_lag_chk_disabled_bond(struct ice_lag *lag, void *ptr)
  */
 static void ice_lag_disable_sriov_bond(struct ice_lag *lag)
 {
-	struct ice_lag_netdev_list *entry;
 	struct ice_netdev_priv *np;
-	struct net_device *netdev;
 	struct ice_pf *pf;
 
-	list_for_each_entry(entry, lag->netdev_head, node) {
-		netdev = entry->netdev;
-		np = netdev_priv(netdev);
-		pf = np->vsi->back;
-
-		ice_clear_feature_support(pf, ICE_F_SRIOV_LAG);
+	np = netdev_priv(lag->netdev);
+	pf = np->vsi->back;
+	ice_clear_feature_support(pf, ICE_F_SRIOV_LAG);
 	}
 }
 
-- 
2.40.1

Re: [PATCH iwl-next] ice: Fix SRIOV LAG disable on non-compliant aggreagate

[Simon Horman]

On Fri, Oct 06, 2023 at 02:02:11PM -0700, Dave Ertman wrote:
> If an attribute of an aggregate interface disqualifies it from supporting
> SRIOV, the driver will unwind the SRIOV support.  Currently the driver is
> clearing the feature bit for all interfaces in the aggregate, but this is
> not allowing the other interfaces to unwind successfully on driver unload.
> 
> Only clear the feature bit for the interface that is currently unwinding.
> 
> Fixes: bf65da2eb279 ("ice: enforce interface eligibility and add messaging for SRIOV LAG")
> Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_lag.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/ice/ice_lag.c b/drivers/net/ethernet/intel/ice/ice_lag.c
> index 2c96d1883e19..c9071228b1ea 100644
> --- a/drivers/net/ethernet/intel/ice/ice_lag.c
> +++ b/drivers/net/ethernet/intel/ice/ice_lag.c
> @@ -1513,17 +1513,12 @@ static void ice_lag_chk_disabled_bond(struct ice_lag *lag, void *ptr)
>   */
>  static void ice_lag_disable_sriov_bond(struct ice_lag *lag)
>  {
> -	struct ice_lag_netdev_list *entry;
>  	struct ice_netdev_priv *np;
> -	struct net_device *netdev;
>  	struct ice_pf *pf;
>  
> -	list_for_each_entry(entry, lag->netdev_head, node) {
> -		netdev = entry->netdev;
> -		np = netdev_priv(netdev);
> -		pf = np->vsi->back;
> -
> -		ice_clear_feature_support(pf, ICE_F_SRIOV_LAG);
> +	np = netdev_priv(lag->netdev);
> +	pf = np->vsi->back;
> +	ice_clear_feature_support(pf, ICE_F_SRIOV_LAG);
>  	}
>  }

Hi Dave,

unfortunately applying this patch results in a build failure.

-- 
pw-bot: changes-requested

RE: [PATCH iwl-next] ice: Fix SRIOV LAG disable on non-compliant aggreagate

[Ertman, David M]

> -----Original Message-----
> From: Simon Horman <horms@kernel.org>
> Sent: Sunday, October 8, 2023 7:10 AM
> To: Ertman, David M <david.m.ertman@intel.com>
> Cc: intel-wired-lan@lists.osuosl.org; netdev@vger.kernel.org
> Subject: Re: [PATCH iwl-next] ice: Fix SRIOV LAG disable on non-compliant
> aggreagate
> 
> On Fri, Oct 06, 2023 at 02:02:11PM -0700, Dave Ertman wrote:
> > If an attribute of an aggregate interface disqualifies it from supporting
> > SRIOV, the driver will unwind the SRIOV support.  Currently the driver is
> > clearing the feature bit for all interfaces in the aggregate, but this is
> > not allowing the other interfaces to unwind successfully on driver unload.
> >
> > Only clear the feature bit for the interface that is currently unwinding.
> >
> > Fixes: bf65da2eb279 ("ice: enforce interface eligibility and add messaging
> for SRIOV LAG")
> > Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
> > ---
> >  drivers/net/ethernet/intel/ice/ice_lag.c | 11 +++--------
> >  1 file changed, 3 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/intel/ice/ice_lag.c
> b/drivers/net/ethernet/intel/ice/ice_lag.c
> > index 2c96d1883e19..c9071228b1ea 100644
> > --- a/drivers/net/ethernet/intel/ice/ice_lag.c
> > +++ b/drivers/net/ethernet/intel/ice/ice_lag.c
> > @@ -1513,17 +1513,12 @@ static void ice_lag_chk_disabled_bond(struct
> ice_lag *lag, void *ptr)
> >   */
> >  static void ice_lag_disable_sriov_bond(struct ice_lag *lag)
> >  {
> > -	struct ice_lag_netdev_list *entry;
> >  	struct ice_netdev_priv *np;
> > -	struct net_device *netdev;
> >  	struct ice_pf *pf;
> >
> > -	list_for_each_entry(entry, lag->netdev_head, node) {
> > -		netdev = entry->netdev;
> > -		np = netdev_priv(netdev);
> > -		pf = np->vsi->back;
> > -
> > -		ice_clear_feature_support(pf, ICE_F_SRIOV_LAG);
> > +	np = netdev_priv(lag->netdev);
> > +	pf = np->vsi->back;
> > +	ice_clear_feature_support(pf, ICE_F_SRIOV_LAG);
> >  	}
> >  }
> 
> Hi Dave,
> 
> unfortunately applying this patch results in a build failure.
> 
> --
> pw-bot: changes-requested
> 
> 
Sorry about the mix-up.  I fixed the braces issues, but then sent the wrong version of the patch out.

Correct version on the way with v2.
DaveE