bpf: Add kernel test functions for fentry testing (faeb2dce) · Commits · 戴 / test

net/bpf/test_run.c

+41 −0

Original line number	Diff line number	Diff line
		@@ -105,6 +105,40 @@ out:
		return err;
		}

		/* Integer types of various sizes and pointer combinations cover variety of
		* architecture dependent calling conventions. 7+ can be supported in the
		* future.
		*/
		int noinline bpf_fentry_test1(int a)
		{
		return a + 1;
		}

		int noinline bpf_fentry_test2(int a, u64 b)
		{
		return a + b;
		}

		int noinline bpf_fentry_test3(char a, int b, u64 c)
		{
		return a + b + c;
		}

		int noinline bpf_fentry_test4(void *a, char b, int c, u64 d)
		{
		return (long)a + b + c + d;
		}

		int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e)
		{
		return a + (long)b + c + d + e;
		}

		int noinline bpf_fentry_test6(u64 a, void b, short c, int d, void e, u64 f)
		{
		return a + (long)b + c + d + (long)e + f;
		}

		static void bpf_test_init(const union bpf_attr kattr, u32 size,
		u32 headroom, u32 tailroom)
		{
		@@ -122,6 +156,13 @@ static void bpf_test_init(const union bpf_attr kattr, u32 size,
		kfree(data);
		return ERR_PTR(-EFAULT);
		}
		if (bpf_fentry_test1(1) != 2 \|\|
		bpf_fentry_test2(2, 3) != 5 \|\|
		bpf_fentry_test3(4, 5, 6) != 15 \|\|
		bpf_fentry_test4((void *)7, 8, 9, 10) != 34 \|\|
		bpf_fentry_test5(11, (void *)12, 13, 14, 15) != 65 \|\|
		bpf_fentry_test6(16, (void )17, 18, 19, (void )20, 21) != 111)
		return ERR_PTR(-EFAULT);
		return data;
		}