Add ipip6 and ip6ip decap support for bpf_skb_adjust_room(). Main use case is for using cls_bpf on ingress hook to decapsulate IPv4 over IPv6 and IPv6 over IPv4 tunnel packets. And add ipip6 and ip6ip decap testcases to verify that bpf_skb_adjust_room() correctly decapsulate ipip6 and ip6ip tunnel packets. Ziyang Xuan (2): bpf: Add ipip6 and ip6ip decap support for bpf_skb_adjust_room() selftests/bpf: add ipip6 and ip6ip decap to test_tc_tunnel net/core/filter.c | 34 +++++++++- .../selftests/bpf/progs/test_tc_tunnel.c | 64 +++++++++++++++++++ tools/testing/selftests/bpf/test_tc_tunnel.sh | 15 +++-- 3 files changed, 105 insertions(+), 8 deletions(-) -- 2.25.1