selftests/bpf: freplace tests for tracking of changes_packet_data

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commit 89ff40890d upstream.

Try different combinations of global functions replacement:
- replace function that changes packet data with one that doesn't;
- replace function that changes packet data with one that does;
- replace function that doesn't change packet data with one that does;
- replace function that doesn't change packet data with one that doesn't;

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20241210041100.1898468-7-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Eduard Zingerman 2025-04-30 16:19:48 +08:00 • committed by Greg Kroah-Hartman

parent 7197fc4acd

commit 70234fbfa2

3 changed files with 120 additions and 0 deletions

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76

tools/testing/selftests/bpf/prog_tests/changes_pkt_data.c

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26

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

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18

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

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