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bpf/tests: Add test case flag for verifier zero-extension 

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
This commit is contained in:
Johan Almbladh 2021-09-14 11:18:36 +02:00 committed by Daniel Borkmann
parent 2e80761194
commit 27cc6dac6e
1 changed files with 3 additions and 0 deletions
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3
lib/test_bpf.c
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@ -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. */
@ -11280,6 +11281,8 @@ static struct bpf_prog *generate_filter(int which, int *err)
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.