[PATCH net-next 1/2] net: stmmac: fix tc flower deletion for VLAN priority Rx steering

[Ong, Boon Leong]

>I was about to post a very similar fix for that same problem (except I
>was adding support for other packet steering types)...
>I can confirm your patch works. 

Thanks for testing it. 

>Note that a simpler way to reproduce is
>simply to add a filter, then remove all the filters, e.g.:
>$ IFDEVNAME=eth0
>$ tc qdisc add dev $IFDEVNAME ingress
>$ tc qdisc add dev $IFDEVNAME root mqprio num_tc 8 \
>    map 0 1 2 3 4 5 6 7 0 0 0 0 0 0 0 0 \
>    queues 1 at 0 1 at 1 1 at 2 1 at 3 1 at 4 1 at 5 1 at 6 1 at 7 hw 0
>$ tc filter add dev $IFDEVNAME parent ffff: protocol 802.1Q \
>    flower vlan_prio 0 hw_tc 0
>$ tc filter del dev $IFDEVNAME ingress
 
Yes, you are right above. I will resend v2 for this patch
to fix the comment given by Sebastian on "net" patch version
here: https://patchwork.kernel.org/project/netdevbpf/patch/20211209130335.81114-1-boon.leong.ong@intel.com/