Commit 27cc6dac authored by Johan Almbladh's avatar Johan Almbladh Committed by Daniel Borkmann
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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: default avatarJohan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210914091842.4186267-9-johan.almbladh@anyfinetworks.com
parent 2e807611

lib/test_bpf.c

+3 −0
Original line number Diff line number Diff line
@@ -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.