[PATCH net] net: airoha: fix HTB class modification offload

[Jakub Kicinski]

On Mon, 6 Jul 2026 10:02:59 +0200 Lorenzo Bianconi wrote:
> > HTB core does not populate parent_classid for TC_HTB_NODE_MODIFY.
> > Airoha currently checks parent_classid against TC_HTB_CLASSID_ROOT
> > in a helper shared by both TC_HTB_LEAF_ALLOC_QUEUE and
> > TC_HTB_NODE_MODIFY. Since the modify path leaves parent_classid as
> > zero, the check always fails and changing parameters of an already
> > offloaded HTB class is rejected with -EINVAL.
> > 
> > Move the root-parent check into the allocation path and validate
> > modify requests using the per-netdev QoS channel bitmap, consistent
> > with the delete and query paths.
> > 
> > Fixes: ef1ca9271313 ("net: airoha: Add sched HTB offload support")
> > Signed-off-by: Wayen Yan <win847 at gmail.com>  
> 
> Acked-by: Lorenzo Bianconi <lorenzo at kernel.org>

ditto, please repost