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Diffstat (limited to 'tools/bpf/bpftool/map.c')
-rw-r--r--tools/bpf/bpftool/map.c64
1 files changed, 38 insertions, 26 deletions
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index 994a7e0d16fb..3ec82904ccec 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -46,6 +46,7 @@ const char * const map_type_name[] = {
[BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE] = "percpu_cgroup_storage",
[BPF_MAP_TYPE_QUEUE] = "queue",
[BPF_MAP_TYPE_STACK] = "stack",
+ [BPF_MAP_TYPE_SK_STORAGE] = "sk_storage",
};
const size_t map_type_name_size = ARRAY_SIZE(map_type_name);
@@ -153,11 +154,13 @@ static int do_dump_btf(const struct btf_dumper *d,
/* start of key-value pair */
jsonw_start_object(d->jw);
- jsonw_name(d->jw, "key");
+ if (map_info->btf_key_type_id) {
+ jsonw_name(d->jw, "key");
- ret = btf_dumper_type(d, map_info->btf_key_type_id, key);
- if (ret)
- goto err_end_obj;
+ ret = btf_dumper_type(d, map_info->btf_key_type_id, key);
+ if (ret)
+ goto err_end_obj;
+ }
if (!map_is_per_cpu(map_info->type)) {
jsonw_name(d->jw, "value");
@@ -259,20 +262,20 @@ static void print_entry_json(struct bpf_map_info *info, unsigned char *key,
}
static void print_entry_error(struct bpf_map_info *info, unsigned char *key,
- const char *value)
+ const char *error_msg)
{
- int value_size = strlen(value);
+ int msg_size = strlen(error_msg);
bool single_line, break_names;
- break_names = info->key_size > 16 || value_size > 16;
- single_line = info->key_size + value_size <= 24 && !break_names;
+ break_names = info->key_size > 16 || msg_size > 16;
+ single_line = info->key_size + msg_size <= 24 && !break_names;
printf("key:%c", break_names ? '\n' : ' ');
fprint_hex(stdout, key, info->key_size, " ");
printf(single_line ? " " : "\n");
- printf("value:%c%s", break_names ? '\n' : ' ', value);
+ printf("value:%c%s", break_names ? '\n' : ' ', error_msg);
printf("\n");
}
@@ -296,11 +299,7 @@ static void print_entry_plain(struct bpf_map_info *info, unsigned char *key,
if (info->value_size) {
printf("value:%c", break_names ? '\n' : ' ');
- if (value)
- fprint_hex(stdout, value, info->value_size,
- " ");
- else
- printf("<no entry>");
+ fprint_hex(stdout, value, info->value_size, " ");
}
printf("\n");
@@ -319,11 +318,8 @@ static void print_entry_plain(struct bpf_map_info *info, unsigned char *key,
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>");
+ fprint_hex(stdout, value + i * step,
+ info->value_size, " ");
printf("\n");
}
}
@@ -536,6 +532,9 @@ static int show_map_close_json(int fd, struct bpf_map_info *info)
}
close(fd);
+ if (info->btf_id)
+ jsonw_int_field(json_wtr, "btf_id", info->btf_id);
+
if (!hash_empty(map_table.table)) {
struct pinned_obj *obj;
@@ -602,15 +601,19 @@ static int show_map_close_plain(int fd, struct bpf_map_info *info)
}
close(fd);
- printf("\n");
if (!hash_empty(map_table.table)) {
struct pinned_obj *obj;
hash_for_each_possible(map_table.table, obj, hash, info->id) {
if (obj->id == info->id)
- printf("\tpinned %s\n", obj->path);
+ printf("\n\tpinned %s", obj->path);
}
}
+
+ if (info->btf_id)
+ printf("\n\tbtf_id %d", info->btf_id);
+
+ printf("\n");
return 0;
}
@@ -720,11 +723,16 @@ static int dump_map_elem(int fd, void *key, void *value,
jsonw_string_field(json_wtr, "error", strerror(lookup_errno));
jsonw_end_object(json_wtr);
} else {
- if (errno == ENOENT)
- print_entry_plain(map_info, key, NULL);
- else
- print_entry_error(map_info, key,
- strerror(lookup_errno));
+ const char *msg = NULL;
+
+ if (lookup_errno == ENOENT)
+ msg = "<no entry>";
+ else if (lookup_errno == ENOSPC &&
+ map_info->type == BPF_MAP_TYPE_REUSEPORT_SOCKARRAY)
+ msg = "<cannot read>";
+
+ print_entry_error(map_info, key,
+ msg ? : strerror(lookup_errno));
}
return 0;
@@ -778,6 +786,10 @@ static int do_dump(int argc, char **argv)
}
}
+ if (info.type == BPF_MAP_TYPE_REUSEPORT_SOCKARRAY &&
+ info.value_size != 8)
+ p_info("Warning: cannot read values from %s map with value_size != 8",
+ map_type_name[info.type]);
while (true) {
err = bpf_map_get_next_key(fd, prev_key, key);
if (err) {