lkml.org 
[lkml]   [2020]   [Jan]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH bpf-next v3 2/2] bpftool: Add misc section and probe for large INSN limit
Date
Introduce a new probe section (misc) for probes not related to concrete
map types, program types, functions or kernel configuration. Introduce a
probe for large INSN limit as the first one in that section.

Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
---
tools/bpf/bpftool/feature.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c
index 03bdc5b3ac49..94735d968c34 100644
--- a/tools/bpf/bpftool/feature.c
+++ b/tools/bpf/bpftool/feature.c
@@ -572,6 +572,18 @@ probe_helpers_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
printf("\n");
}

+static void
+probe_large_insn_limit(const char *define_prefix, __u32 ifindex)
+{
+ bool res;
+
+ res = bpf_probe_large_insn_limit(ifindex);
+ print_bool_feature("have_large_insn_limit",
+ "Large program size limit",
+ "HAVE_LARGE_INSN_LIMIT",
+ res, define_prefix);
+}
+
static int do_probe(int argc, char **argv)
{
enum probe_component target = COMPONENT_UNSPEC;
@@ -724,6 +736,12 @@ static int do_probe(int argc, char **argv)
probe_helpers_for_progtype(i, supported_types[i],
define_prefix, ifindex);

+ print_end_then_start_section("misc",
+ "Scanning miscellaneous eBPF features...",
+ "/*** eBPF misc features ***/",
+ define_prefix);
+ probe_large_insn_limit(define_prefix, ifindex);
+
exit_close_json:
if (json_output) {
/* End current "section" of probes */
--
2.16.4
\
 
 \ /
  Last update: 2020-01-08 17:25    [W:0.040 / U:0.620 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site