On Wed, Jul 24, 2024 at 10:14:19AM -0600, Ahmed Zaki wrote:
...
> > > +/**
> > > + * iavf_fdir_del_fltr - delete a flow director filter from the list
> > > + * @adapter: pointer to the VF adapter structure
> > > + * @loc: location to delete.
> > > + *
> > > + * Return: 0 on success or negative errno on failure.
> > > + */
> > > +int iavf_fdir_del_fltr(struct iavf_adapter *adapter, u32 loc)
> > > +{
> > > + struct iavf_fdir_fltr *fltr = NULL;
> > > + int err = 0;
> > > +
> > > + spin_lock_bh(&adapter->fdir_fltr_lock);
> > > + fltr = iavf_find_fdir_fltr(adapter, loc);
> > > +
> > > + if (fltr) {
> > > + if (fltr->state == IAVF_FDIR_FLTR_ACTIVE) {
> > > + fltr->state = IAVF_FDIR_FLTR_DEL_REQUEST;
> > > + } else if (fltr->state == IAVF_FDIR_FLTR_INACTIVE) {
> > > + list_del(&fltr->list);
> > > + kfree(fltr);
> > > + adapter->fdir_active_fltr--;
> > > + fltr = NULL;
> > > + } else {
> > > + err = -EBUSY;
> > > + }
> > > + } else if (adapter->fdir_active_fltr) {
> > > + err = -EINVAL;
> > > + }
> > > +
> > > + if (fltr && fltr->state == IAVF_FDIR_FLTR_DEL_REQUEST)
> > > + iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_DEL_FDIR_FILTER);
> >
> > It seems that prior to this change the condition and call to
> > iavf_schedule_aq_request were not protected by fdir_fltr_lock, and now they
> > are. If so, is this change intentional.
> >
>
> yes it is, fltr is member of the list that should be protected by the
> spinlock.
Thanks,
I would suggest moving this into a separate patch: changing locking is a
bit different to refactoring.
Or, if not, at least mentioning it in the patch description.
