3c94994650
Attach BPF program may be failed with the netlink error message "Invalid argument". Per debug kernel trace, it is failed in comparing the kind name in tc_new_tfilter. Log: 05-05 19:44:42.329 1073 2332 2332 W tc_new_tfilter: Specified filter kind does not match existing one Test: enable usb tethering and check the follows $ adb shell tc filter show dev <upstream, downstream> ingress filter protocol ipv6 pref 1 bpf chain 0 filter protocol ipv6 pref 1 bpf chain 0 handle 0x1 prog_offload_schedcls_tether_upstream6_ether:[*fsobj] direct-action not_in_hw id 3 tag 94ca9b12972fdea8 filter protocol ip pref 2 bpf chain 0 filter protocol ip pref 2 bpf chain 0 handle 0x1 prog_offload_schedcls_tether_upstream4_ether:[*fsobj] direct-action not_in_hw id 9 tag 992aa9bfd0503457 filter protocol ipv6 pref 1 bpf chain 0 filter protocol ipv6 pref 1 bpf chain 0 handle 0x1 prog_offload_schedcls_tether_downstream6_rawip:[*fsobj] direct-action not_in_hw id 4 tag 7fb60e556b8f3be7 filter protocol ip pref 2 bpf chain 0 filter protocol ip pref 2 bpf chain 0 handle 0x1 prog_offload_schedcls_tether_downstream4_rawip:[*fsobj] direct-action not_in_hw id 6 tag e41426095404fb64 Change-Id: I471a2e34c626a3737cbd2754e4d1b3000bcf6ba6