MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-23 07:23:12 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

selftests/bpf: add a macro to compare raw memory

Browse Source 
We sometimes need to compare whole structures in an assert. It is
possible to use the existing macros on each field, but when the whole
structure has to be checked, it is more convenient to simply compare the
whole structure memory

Add a dedicated assert macro, ASSERT_MEMEQ, to allow bare memory
comparision
The output generated by this new macro looks like the following:
[...]
run_tests_skb_less:FAIL:returned flow keys unexpected memory mismatch
actual:
	00 00 00 00 00 00 00 00 	00 00 00 00 00 00 00 00
	00 00 00 00 00 00 00 00 	00 00 00 00 00 00 00 00
	00 00 00 00 00 00 00 00 	00 00 00 00 00 00 00 00
	00 00 00 00 00 00 00 00
expected:
	0E 00 3E 00 DD 86 01 01 	00 06 86 DD 50 00 90 1F
	00 00 00 00 00 00 00 00 	00 00 00 00 00 00 00 00
	00 00 00 00 00 00 00 00 	00 00 00 00 00 00 00 00
	01 00 00 00 00 00 00 00
[...]

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@bootlin.com>
Link: https://lore.kernel.org/r/20241120-flow_dissector-v3-1-45b46494f937@bootlin.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Alexis Lothoré (eBPF Foundation) 2024-11-20 08:43:11 +01:00 committed by Alexei Starovoitov
parent e70140ba0d
commit 2fe34a116c
2 changed files with 30 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
tools/testing/selftests/bpf/test_progs.c
View File

@ -1282,6 +1282,21 @@ void crash_handler(int signum)
backtrace_symbols_fd(bt, sz, STDERR_FILENO);
}
void hexdump(const char *prefix, const void *buf, size_t len)
{
for (int i = 0; i < len; i++) {
if (!(i % 16)) {
if (i)
fprintf(stdout, "\n");
fprintf(stdout, "%s", prefix);
}
if (i && !(i % 8) && (i % 16))
fprintf(stdout, "\t");
fprintf(stdout, "%02X ", ((uint8_t *)(buf))[i]);
}
fprintf(stdout, "\n");
}
static void sigint_handler(int signum)
{
int i;

15
tools/testing/selftests/bpf/test_progs.h
View File

@ -185,6 +185,7 @@ void test__end_subtest(void);
void test__skip(void);
void test__fail(void);
int test__join_cgroup(const char *path);
void hexdump(const char *prefix, const void *buf, size_t len);
#define PRINT_FAIL(format...) \
({ \
@ -344,6 +345,20 @@ int test__join_cgroup(const char *path);
___ok; \
})
#define ASSERT_MEMEQ(actual, expected, len, name) ({ \
static int duration = 0; \
const void *__act = actual; \
const void *__exp = expected; \
int __len = len; \
bool ___ok = memcmp(__act, __exp, __len) == 0; \
CHECK(!___ok, (name), "unexpected memory mismatch\n"); \
fprintf(stdout, "actual:\n"); \
hexdump("\t", __act, __len); \
fprintf(stdout, "expected:\n"); \
hexdump("\t", __exp, __len); \
___ok; \
})
#define ASSERT_OK(res, name) ({ \
static int duration = 0; \
long long ___res = (res); \