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Add a small test case which adds two programs - one calling the other
through a tailcall - and check that BPF rejects them in case of different
expected_attach_type values:
# ./vmtest.sh -- ./test_progs -t xdp_devmap
[...]
#641/1 xdp_devmap_attach/DEVMAP with programs in entries:OK
#641/2 xdp_devmap_attach/DEVMAP with frags programs in entries:OK
#641/3 xdp_devmap_attach/Verifier check of DEVMAP programs:OK
#641/4 xdp_devmap_attach/DEVMAP with programs in entries on veth:OK
#641 xdp_devmap_attach:OK
Summary: 2/4 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20250926171201.188490-2-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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