From: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Date: Tue, 14 Sep 2021 11:18:36 +0200
Subject: bpf/tests: Add test case flag for verifier zero-extension
Patch-mainline: v5.16-rc1
Git-commit: 27cc6dac6ec816cc31be9031edbee3e519234471
References: jsc#PED-1377

This patch adds a new flag to indicate that the verified did insert
zero-extensions, even though the verifier is not being run for any
of the tests.

Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210914091842.4186267-9-johan.almbladh@anyfinetworks.com
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
---
 lib/test_bpf.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -52,6 +52,7 @@
 #define FLAG_NO_DATA		BIT(0)
 #define FLAG_EXPECTED_FAIL	BIT(1)
 #define FLAG_SKB_FRAG		BIT(2)
+#define FLAG_VERIFIER_ZEXT	BIT(3)
 
 enum {
 	CLASSIC  = BIT(6),	/* Old BPF instructions only. */
@@ -9303,6 +9304,8 @@ static struct bpf_prog *generate_filter(
 		fp->type = BPF_PROG_TYPE_SOCKET_FILTER;
 		memcpy(fp->insnsi, fptr, fp->len * sizeof(struct bpf_insn));
 		fp->aux->stack_depth = tests[which].stack_depth;
+		fp->aux->verifier_zext = !!(tests[which].aux &
+					    FLAG_VERIFIER_ZEXT);
 
 		/* We cannot error here as we don't need type compatibility
 		 * checks.