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-rw-r--r--tools/bpf/bpftool/map.c47
1 files changed, 28 insertions, 19 deletions
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index 4256842f9664..3f599399913b 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -285,16 +285,21 @@ static void print_entry_plain(struct bpf_map_info *info, unsigned char *key,
single_line = info->key_size + info->value_size <= 24 &&
!break_names;
- printf("key:%c", break_names ? '\n' : ' ');
- fprint_hex(stdout, key, info->key_size, " ");
+ if (info->key_size) {
+ printf("key:%c", break_names ? '\n' : ' ');
+ fprint_hex(stdout, key, info->key_size, " ");
- printf(single_line ? " " : "\n");
+ printf(single_line ? " " : "\n");
+ }
- printf("value:%c", break_names ? '\n' : ' ');
- if (value)
- fprint_hex(stdout, value, info->value_size, " ");
- else
- printf("<no entry>");
+ if (info->value_size) {
+ printf("value:%c", break_names ? '\n' : ' ');
+ if (value)
+ fprint_hex(stdout, value, info->value_size,
+ " ");
+ else
+ printf("<no entry>");
+ }
printf("\n");
} else {
@@ -303,19 +308,23 @@ static void print_entry_plain(struct bpf_map_info *info, unsigned char *key,
n = get_possible_cpus();
step = round_up(info->value_size, 8);
- printf("key:\n");
- fprint_hex(stdout, key, info->key_size, " ");
- printf("\n");
- for (i = 0; i < n; i++) {
- printf("value (CPU %02d):%c",
- i, info->value_size > 16 ? '\n' : ' ');
- if (value)
- fprint_hex(stdout, value + i * step,
- info->value_size, " ");
- else
- printf("<no entry>");
+ if (info->key_size) {
+ printf("key:\n");
+ fprint_hex(stdout, key, info->key_size, " ");
printf("\n");
}
+ if (info->value_size) {
+ for (i = 0; i < n; i++) {
+ printf("value (CPU %02d):%c",
+ i, info->value_size > 16 ? '\n' : ' ');
+ if (value)
+ fprint_hex(stdout, value + i * step,
+ info->value_size, " ");
+ else
+ printf("<no entry>");
+ printf("\n");
+ }
+ }
}
}