[PATCH iwl-next v2] ice: Block PF reinit if attached to bond

[PATCH iwl-next v2] ice: Block PF reinit if attached to bond

[Sachin Bahadur]

PF interface part of LAG should not allow driver reinit via devlink. The
Bond config will be lost due to driver reinit. ice_devlink_reload_down is
called before PF driver reinit. If PF is attached to bond,
ice_devlink_reload_down returns error.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Sachin Bahadur <sachin.bahadur@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_devlink.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c
index f4e24d11ebd0..5fe88e949b09 100644
--- a/drivers/net/ethernet/intel/ice/ice_devlink.c
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c
@@ -457,6 +457,10 @@ ice_devlink_reload_down(struct devlink *devlink, bool netns_change,
 					   "Remove all VFs before doing reinit\n");
 			return -EOPNOTSUPP;
 		}
+		if (pf->lag && pf->lag->bonded) {
+			NL_SET_ERR_MSG_MOD(extack, "Remove all associated Bonds before doing reinit");
+			return -EBUSY;
+		}
 		ice_unload(pf);
 		return 0;
 	case DEVLINK_RELOAD_ACTION_FW_ACTIVATE:
-- 
2.25.1

Re: [PATCH iwl-next v2] ice: Block PF reinit if attached to bond

[Simon Horman]

On Mon, Nov 13, 2023 at 03:58:56PM -0800, Sachin Bahadur wrote:
> PF interface part of LAG should not allow driver reinit via devlink. The
> Bond config will be lost due to driver reinit. ice_devlink_reload_down is
> called before PF driver reinit. If PF is attached to bond,
> ice_devlink_reload_down returns error.
> 
> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
> Signed-off-by: Sachin Bahadur <sachin.bahadur@intel.com>

Hi Sachin,

I wonder if this should have a Fixes tag and be targeted at iwl-net.
It does feel like a bug from the description, but I could be wrong.