Orange Pi5 kernel

// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
 
#include "util/bpf_map.h"
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
 
static bool bpf_map_def__is_per_cpu(const struct bpf_map_def *def)
{
<------>return def->type == BPF_MAP_TYPE_PERCPU_HASH ||
<------>       def->type == BPF_MAP_TYPE_PERCPU_ARRAY ||
<------>       def->type == BPF_MAP_TYPE_LRU_PERCPU_HASH ||
<------>       def->type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE;
}
 
static void *bpf_map_def__alloc_value(const struct bpf_map_def *def)
{
<------>if (bpf_map_def__is_per_cpu(def))
<------><------>return malloc(round_up(def->value_size, 8) * sysconf(_SC_NPROCESSORS_CONF));
 
<------>return malloc(def->value_size);
}
 
int bpf_map__fprintf(struct bpf_map *map, FILE *fp)
{
<------>const struct bpf_map_def *def = bpf_map__def(map);
<------>void *prev_key = NULL, *key, *value;
<------>int fd = bpf_map__fd(map), err;
<------>int printed = 0;
 
<------>if (fd < 0)
<------><------>return fd;
 
<------>if (IS_ERR(def))
<------><------>return PTR_ERR(def);
 
<------>err = -ENOMEM;
<------>key = malloc(def->key_size);
<------>if (key == NULL)
<------><------>goto out;
 
<------>value = bpf_map_def__alloc_value(def);
<------>if (value == NULL)
<------><------>goto out_free_key;
 
<------>while ((err = bpf_map_get_next_key(fd, prev_key, key) == 0)) {
<------><------>int intkey = *(int *)key;
 
<------><------>if (!bpf_map_lookup_elem(fd, key, value)) {
<------><------><------>bool boolval = *(bool *)value;
<------><------><------>if (boolval)
<------><------><------><------>printed += fprintf(fp, "[%d] = %d,\n", intkey, boolval);
<------><------>} else {
<------><------><------>printed += fprintf(fp, "[%d] = ERROR,\n", intkey);
<------><------>}
 
<------><------>prev_key = key;
<------>}
 
<------>if (err == ENOENT)
<------><------>err = printed;
 
<------>free(value);
out_free_key:
<------>free(key);
out:
<------>return err;
}