[bpf-next,0/2] bpf: Add ipip6 and ip6ip decap support for bpf_skb_adjust_room()

Message

Ziyang Xuan (William) Jan. 6, 2023, 3:55 a.m. UTC

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(-)