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selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages

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Add unit tests for bpf_arena_alloc/free_pages() functionality
and bpf_arena_common.h with a set of common helpers and macros that
is used in this test and the following patches.

Also modify test_loader that didn't support running bpf_prog_type_syscall
programs.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240308010812.89848-13-alexei.starovoitov@gmail.com
This commit is contained in:
Alexei Starovoitov
2024-03-07 17:08:10 -08:00
committed by Andrii Nakryiko
parent 204c628730
commit 80a4129fcf
6 changed files with 227 additions and 2 deletions
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9
tools/testing/selftests/bpf/test_loader.c
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@@ -501,7 +501,7 @@ static bool is_unpriv_capable_map(struct bpf_map *map)
}
}
static int do_prog_test_run(int fd_prog, int *retval)
static int do_prog_test_run(int fd_prog, int *retval, bool empty_opts)
{
__u8 tmp_out[TEST_DATA_LEN << 2] = {};
__u8 tmp_in[TEST_DATA_LEN] = {};
@@ -514,6 +514,10 @@ static int do_prog_test_run(int fd_prog, int *retval)
.repeat = 1,
);
if (empty_opts) {
memset(&topts, 0, sizeof(struct bpf_test_run_opts));
topts.sz = sizeof(struct bpf_test_run_opts);
}
err = bpf_prog_test_run_opts(fd_prog, &topts);
saved_errno = errno;
@@ -649,7 +653,8 @@ void run_subtest(struct test_loader *tester,
}
}
do_prog_test_run(bpf_program__fd(tprog), &retval);
do_prog_test_run(bpf_program__fd(tprog), &retval,
bpf_program__type(tprog) == BPF_PROG_TYPE_SYSCALL ? true : false);
if (retval != subspec->retval && subspec->retval != POINTER_VALUE) {
PRINT_FAIL("Unexpected retval: %d != %d\n", retval, subspec->retval);
goto tobj_cleanup;