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selftests/bpf: refactor snprintf_btf test to use bpf_strncmp #6301

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selftests/bpf: refactor snprintf_btf test to use bpf_strncmp #6301

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15 changes: 1 addition & 14 deletions tools/testing/selftests/bpf/progs/netif_receive_skb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -31,19 +31,6 @@ struct {
__type(value, char[STRSIZE]);
} strdata SEC(".maps");

static int __strncmp(const void *m1, const void *m2, size_t len)
{
const unsigned char *s1 = m1;
const unsigned char *s2 = m2;
int i, delta = 0;

for (i = 0; i < len; i++) {
delta = s1[i] - s2[i];
if (delta || s1[i] == 0 || s2[i] == 0)
break;
}
return delta;
}

#if __has_builtin(__builtin_btf_type_id)
#define TEST_BTF(_str, _type, _flags, _expected, ...) \
Expand All @@ -69,7 +56,7 @@ static int __strncmp(const void *m1, const void *m2, size_t len)
&_ptr, sizeof(_ptr), _hflags); \
if (ret) \
break; \
_cmp = __strncmp(_str, _expectedval, EXPECTED_STRSIZE); \
_cmp = bpf_strncmp(_str, EXPECTED_STRSIZE, _expectedval); \
if (_cmp != 0) { \
bpf_printk("(%d) got %s", _cmp, _str); \
bpf_printk("(%d) expected %s", _cmp, \
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