The bpf-nf selftests play various games with aliased types such that folks with CONFIG_NF_CONNTRACK=m/n configs can still build the selftests. See commits:1058b6a78d("selftests/bpf: Do not fail build if CONFIG_NF_CONNTRACK=m/n")92afc5329a("selftests/bpf: Fix build errors if CONFIG_NF_CONNTRACK=m") Thus, it is simpler if these selftests opt out of using generated kfunc prototypes. The preprocessor macro this commit uses will be introduced in the final commit. Signed-off-by: Daniel Xu <dxu@dxuuu.xyz> Link: https://lore.kernel.org/r/044a5b10cb3abd0d71cb1c818ee0bfc4a2239332.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <ast@kernel.org>