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Diffstat (limited to 'tools/bpf/bpftool/map.c')
-rw-r--r--tools/bpf/bpftool/map.c182
1 files changed, 89 insertions, 93 deletions
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index 7bf38f0e152e..8469ea6cf1c8 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -52,28 +52,30 @@
#include "main.h"
static const char * const map_type_name[] = {
- [BPF_MAP_TYPE_UNSPEC] = "unspec",
- [BPF_MAP_TYPE_HASH] = "hash",
- [BPF_MAP_TYPE_ARRAY] = "array",
- [BPF_MAP_TYPE_PROG_ARRAY] = "prog_array",
- [BPF_MAP_TYPE_PERF_EVENT_ARRAY] = "perf_event_array",
- [BPF_MAP_TYPE_PERCPU_HASH] = "percpu_hash",
- [BPF_MAP_TYPE_PERCPU_ARRAY] = "percpu_array",
- [BPF_MAP_TYPE_STACK_TRACE] = "stack_trace",
- [BPF_MAP_TYPE_CGROUP_ARRAY] = "cgroup_array",
- [BPF_MAP_TYPE_LRU_HASH] = "lru_hash",
- [BPF_MAP_TYPE_LRU_PERCPU_HASH] = "lru_percpu_hash",
- [BPF_MAP_TYPE_LPM_TRIE] = "lpm_trie",
- [BPF_MAP_TYPE_ARRAY_OF_MAPS] = "array_of_maps",
- [BPF_MAP_TYPE_HASH_OF_MAPS] = "hash_of_maps",
- [BPF_MAP_TYPE_DEVMAP] = "devmap",
- [BPF_MAP_TYPE_SOCKMAP] = "sockmap",
- [BPF_MAP_TYPE_CPUMAP] = "cpumap",
- [BPF_MAP_TYPE_XSKMAP] = "xskmap",
- [BPF_MAP_TYPE_SOCKHASH] = "sockhash",
- [BPF_MAP_TYPE_CGROUP_STORAGE] = "cgroup_storage",
- [BPF_MAP_TYPE_REUSEPORT_SOCKARRAY] = "reuseport_sockarray",
+ [BPF_MAP_TYPE_UNSPEC] = "unspec",
+ [BPF_MAP_TYPE_HASH] = "hash",
+ [BPF_MAP_TYPE_ARRAY] = "array",
+ [BPF_MAP_TYPE_PROG_ARRAY] = "prog_array",
+ [BPF_MAP_TYPE_PERF_EVENT_ARRAY] = "perf_event_array",
+ [BPF_MAP_TYPE_PERCPU_HASH] = "percpu_hash",
+ [BPF_MAP_TYPE_PERCPU_ARRAY] = "percpu_array",
+ [BPF_MAP_TYPE_STACK_TRACE] = "stack_trace",
+ [BPF_MAP_TYPE_CGROUP_ARRAY] = "cgroup_array",
+ [BPF_MAP_TYPE_LRU_HASH] = "lru_hash",
+ [BPF_MAP_TYPE_LRU_PERCPU_HASH] = "lru_percpu_hash",
+ [BPF_MAP_TYPE_LPM_TRIE] = "lpm_trie",
+ [BPF_MAP_TYPE_ARRAY_OF_MAPS] = "array_of_maps",
+ [BPF_MAP_TYPE_HASH_OF_MAPS] = "hash_of_maps",
+ [BPF_MAP_TYPE_DEVMAP] = "devmap",
+ [BPF_MAP_TYPE_SOCKMAP] = "sockmap",
+ [BPF_MAP_TYPE_CPUMAP] = "cpumap",
+ [BPF_MAP_TYPE_XSKMAP] = "xskmap",
+ [BPF_MAP_TYPE_SOCKHASH] = "sockhash",
+ [BPF_MAP_TYPE_CGROUP_STORAGE] = "cgroup_storage",
+ [BPF_MAP_TYPE_REUSEPORT_SOCKARRAY] = "reuseport_sockarray",
[BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE] = "percpu_cgroup_storage",
+ [BPF_MAP_TYPE_QUEUE] = "queue",
+ [BPF_MAP_TYPE_STACK] = "stack",
};
static bool map_is_per_cpu(__u32 type)
@@ -215,70 +217,6 @@ err_end_obj:
return ret;
}
-static int get_btf(struct bpf_map_info *map_info, struct btf **btf)
-{
- struct bpf_btf_info btf_info = { 0 };
- __u32 len = sizeof(btf_info);
- __u32 last_size;
- int btf_fd;
- void *ptr;
- int err;
-
- err = 0;
- *btf = NULL;
- btf_fd = bpf_btf_get_fd_by_id(map_info->btf_id);
- if (btf_fd < 0)
- return 0;
-
- /* we won't know btf_size until we call bpf_obj_get_info_by_fd(). so
- * let's start with a sane default - 4KiB here - and resize it only if
- * bpf_obj_get_info_by_fd() needs a bigger buffer.
- */
- btf_info.btf_size = 4096;
- last_size = btf_info.btf_size;
- ptr = malloc(last_size);
- if (!ptr) {
- err = -ENOMEM;
- goto exit_free;
- }
-
- bzero(ptr, last_size);
- btf_info.btf = ptr_to_u64(ptr);
- err = bpf_obj_get_info_by_fd(btf_fd, &btf_info, &len);
-
- if (!err && btf_info.btf_size > last_size) {
- void *temp_ptr;
-
- last_size = btf_info.btf_size;
- temp_ptr = realloc(ptr, last_size);
- if (!temp_ptr) {
- err = -ENOMEM;
- goto exit_free;
- }
- ptr = temp_ptr;
- bzero(ptr, last_size);
- btf_info.btf = ptr_to_u64(ptr);
- err = bpf_obj_get_info_by_fd(btf_fd, &btf_info, &len);
- }
-
- if (err || btf_info.btf_size > last_size) {
- err = errno;
- goto exit_free;
- }
-
- *btf = btf__new((__u8 *)btf_info.btf, btf_info.btf_size, NULL);
- if (IS_ERR(*btf)) {
- err = PTR_ERR(*btf);
- *btf = NULL;
- }
-
-exit_free:
- close(btf_fd);
- free(ptr);
-
- return err;
-}
-
static json_writer_t *get_btf_writer(void)
{
json_writer_t *jw = jsonw_new(stdout);
@@ -383,7 +321,10 @@ static void print_entry_plain(struct bpf_map_info *info, unsigned char *key,
printf(single_line ? " " : "\n");
printf("value:%c", break_names ? '\n' : ' ');
- fprint_hex(stdout, value, info->value_size, " ");
+ if (value)
+ fprint_hex(stdout, value, info->value_size, " ");
+ else
+ printf("<no entry>");
printf("\n");
} else {
@@ -398,8 +339,11 @@ 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' : ' ');
- fprint_hex(stdout, value + i * step,
- info->value_size, " ");
+ if (value)
+ fprint_hex(stdout, value + i * step,
+ info->value_size, " ");
+ else
+ printf("<no entry>");
printf("\n");
}
}
@@ -543,7 +487,6 @@ static int show_map_close_json(int fd, struct bpf_map_info *info)
char *memlock;
memlock = get_fdinfo(fd, "memlock");
- close(fd);
jsonw_start_object(json_wtr);
@@ -570,6 +513,30 @@ static int show_map_close_json(int fd, struct bpf_map_info *info)
jsonw_int_field(json_wtr, "bytes_memlock", atoi(memlock));
free(memlock);
+ if (info->type == BPF_MAP_TYPE_PROG_ARRAY) {
+ char *owner_prog_type = get_fdinfo(fd, "owner_prog_type");
+ char *owner_jited = get_fdinfo(fd, "owner_jited");
+
+ if (owner_prog_type) {
+ unsigned int prog_type = atoi(owner_prog_type);
+
+ if (prog_type < ARRAY_SIZE(prog_type_name))
+ jsonw_string_field(json_wtr, "owner_prog_type",
+ prog_type_name[prog_type]);
+ else
+ jsonw_uint_field(json_wtr, "owner_prog_type",
+ prog_type);
+ }
+ if (atoi(owner_jited))
+ jsonw_bool_field(json_wtr, "owner_jited", true);
+ else
+ jsonw_bool_field(json_wtr, "owner_jited", false);
+
+ free(owner_prog_type);
+ free(owner_jited);
+ }
+ close(fd);
+
if (!hash_empty(map_table.table)) {
struct pinned_obj *obj;
@@ -592,7 +559,6 @@ static int show_map_close_plain(int fd, struct bpf_map_info *info)
char *memlock;
memlock = get_fdinfo(fd, "memlock");
- close(fd);
printf("%u: ", info->id);
if (info->type < ARRAY_SIZE(map_type_name))
@@ -613,6 +579,30 @@ static int show_map_close_plain(int fd, struct bpf_map_info *info)
printf(" memlock %sB", memlock);
free(memlock);
+ if (info->type == BPF_MAP_TYPE_PROG_ARRAY) {
+ char *owner_prog_type = get_fdinfo(fd, "owner_prog_type");
+ char *owner_jited = get_fdinfo(fd, "owner_jited");
+
+ printf("\n\t");
+ if (owner_prog_type) {
+ unsigned int prog_type = atoi(owner_prog_type);
+
+ if (prog_type < ARRAY_SIZE(prog_type_name))
+ printf("owner_prog_type %s ",
+ prog_type_name[prog_type]);
+ else
+ printf("owner_prog_type %d ", prog_type);
+ }
+ if (atoi(owner_jited))
+ printf("owner jited");
+ else
+ printf("owner not jited");
+
+ free(owner_prog_type);
+ free(owner_jited);
+ }
+ close(fd);
+
printf("\n");
if (!hash_empty(map_table.table)) {
struct pinned_obj *obj;
@@ -731,7 +721,11 @@ 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 {
- print_entry_error(map_info, key, strerror(lookup_errno));
+ if (errno == ENOENT)
+ print_entry_plain(map_info, key, NULL);
+ else
+ print_entry_error(map_info, key,
+ strerror(lookup_errno));
}
return 0;
@@ -765,7 +759,7 @@ static int do_dump(int argc, char **argv)
prev_key = NULL;
- err = get_btf(&info, &btf);
+ err = btf__get_from_id(info.btf_id, &btf);
if (err) {
p_err("failed to get btf");
goto exit_free;
@@ -909,7 +903,7 @@ static int do_lookup(int argc, char **argv)
}
/* here means bpf_map_lookup_elem() succeeded */
- err = get_btf(&info, &btf);
+ err = btf__get_from_id(info.btf_id, &btf);
if (err) {
p_err("failed to get btf");
goto exit_free;
@@ -1140,6 +1134,8 @@ static int do_create(int argc, char **argv)
return -1;
}
+ set_max_rlimit();
+
fd = bpf_create_map_xattr(&attr);
if (fd < 0) {
p_err("map create failed: %s", strerror(errno));
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-08 02:46:11 +0300