selftests/bpf: Add BPF_F_NO_TUNNEL_KEY test

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This patch adds a selftest simulating a GRE sender and receiver using
tunnel headers without tunnel keys. It validates if packets encapsulated
using BPF_F_NO_TUNNEL_KEY are decapsulated by a GRE receiver not
configured with tunnel keys.

Signed-off-by: Christian Ehrig <cehrig@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20221218051734.31411-2-cehrig@cloudflare.com

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Christian Ehrig 2022-12-18 06:17:32 +01:00 • committed by Daniel Borkmann

parent e26aa600ba

commit ac6e45e058

2 changed files with 58 additions and 3 deletions

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21

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

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40

tools/testing/selftests/bpf/test_tunnel.sh

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