selftests/bpf: convert bpf tunnel test to BPF_ADJ_ROOM_MAC

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Avoid moving the network layer header when prefixing tunnel headers.

This avoids an explicit call to bpf_skb_store_bytes and an implicit
move of the network header bytes in bpf_skb_adjust_room.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Willem de Bruijn 2019-03-22 14:32:58 -04:00 • committed by Alexei Starovoitov

parent 6c408decbd

commit 005edd1656

1 changed files with 3 additions and 22 deletions

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tools/testing/selftests/bpf/progs/test_tc_tunnel.c

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