On Fri, Jun 10, 2016 at 11:10:22PM +0200, Daniel Borkmann wrote: > Add a possibility where the user can just specify the parent and > all filters under that parent are then being purged. Currently, > for example for scripting, one needs to specify pref/prio to have > a well-defined number for 'tc filter del' command for addressing > the previously created instance or additionally filter handle in > case of priorities being the same. Improve usage by allowing the > option for tc to specify the parent and removing the whole chain > for that given parent. > > Example usage after patch, no tc changes required: > > # tc qdisc replace dev foo clsact > # tc filter add dev foo egress bpf da obj ./bpf.o > # tc filter add dev foo egress bpf da obj ./bpf.o > # tc filter show dev foo egress > filter protocol all pref 49151 bpf > filter protocol all pref 49151 bpf handle 0x1 bpf.o:[classifier] > direct-action > filter protocol all pref 49152 bpf > filter protocol all pref 49152 bpf handle 0x1 bpf.o:[classifier] > direct-action > # tc filter del dev foo egress > # tc filter show dev foo egress > #
useful feature. thanks! Acked-by: Alexei Starovoitov <a...@kernel.org>
