bpf: allow to specify log level and reduce it for test_verifier

For the test_verifier case, it's quite hard to parse log level 2 to
figure out what's causing an issue when used to log level 1. We do
want to use bpf_verify_program() in order to simulate some of the
tests with strict alignment. So just add an argument to pass the level
and put it to 1 for test_verifier.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 7e0405e1651d..412a7c82995a 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -120,7 +120,7 @@ int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns,
 int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns,
                        size_t insns_cnt, int strict_alignment,
                        const char *license, __u32 kern_version,
-                       char *log_buf, size_t log_buf_sz)
+                       char *log_buf, size_t log_buf_sz, int log_level)
 {
         union bpf_attr attr;
 
@@ -131,7 +131,7 @@ int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns,
         attr.license = ptr_to_u64(license);
         attr.log_buf = ptr_to_u64(log_buf);
         attr.log_size = log_buf_sz;
-        attr.log_level = 2;
+        attr.log_level = log_level;
         log_buf[0] = 0;
         attr.kern_version = kern_version;
         attr.prog_flags = strict_alignment ? BPF_F_STRICT_ALIGNMENT : 0;