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// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include <test_maps.h>
static void map_batch_update(int map_fd, __u32 max_entries, int *keys,
int *values)
{
int i, err;
DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, opts,
.elem_flags = 0,
.flags = 0,
);
for (i = 0; i < max_entries; i++) {
keys[i] = i;
values[i] = i + 1;
}
err = bpf_map_update_batch(map_fd, keys, values, &max_entries, &opts);
CHECK(err, "bpf_map_update_batch()", "error:%s\n", strerror(errno));
}
static void map_batch_verify(int *visited, __u32 max_entries,
int *keys, int *values)
{
int i;
memset(visited, 0, max_entries * sizeof(*visited));
for (i = 0; i < max_entries; i++) {
CHECK(keys[i] + 1 != values[i], "key/value checking",
"error: i %d key %d value %d\n", i, keys[i], values[i]);
visited[i] = 1;
}
for (i = 0; i < max_entries; i++) {
CHECK(visited[i] != 1, "visited checking",
"error: keys array at index %d missing\n", i);
}
}
void test_array_map_batch_ops(void)
{
struct bpf_create_map_attr xattr = {
.name = "array_map",
.map_type = BPF_MAP_TYPE_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(int),
};
int map_fd, *keys, *values, *visited;
__u32 count, total, total_success;
const __u32 max_entries = 10;
bool nospace_err;
__u64 batch = 0;
int err, step;
DECLARE_LIBBPF_OPTS(bpf_map_batch_opts, opts,
.elem_flags = 0,
.flags = 0,
);
xattr.max_entries = max_entries;
map_fd = bpf_create_map_xattr(&xattr);
CHECK(map_fd == -1,
"bpf_create_map_xattr()", "error:%s\n", strerror(errno));
keys = malloc(max_entries * sizeof(int));
values = malloc(max_entries * sizeof(int));
visited = malloc(max_entries * sizeof(int));
CHECK(!keys || !values || !visited, "malloc()", "error:%s\n",
strerror(errno));
/* populate elements to the map */
map_batch_update(map_fd, max_entries, keys, values);
/* test 1: lookup in a loop with various steps. */
total_success = 0;
for (step = 1; step < max_entries; step++) {
map_batch_update(map_fd, max_entries, keys, values);
map_batch_verify(visited, max_entries, keys, values);
memset(keys, 0, max_entries * sizeof(*keys));
memset(values, 0, max_entries * sizeof(*values));
batch = 0;
total = 0;
/* iteratively lookup/delete elements with 'step'
* elements each.
*/
count = step;
nospace_err = false;
while (true) {
err = bpf_map_lookup_batch(map_fd,
total ? &batch : NULL, &batch,
keys + total,
values + total,
&count, &opts);
CHECK((err && errno != ENOENT), "lookup with steps",
"error: %s\n", strerror(errno));
total += count;
if (err)
break;
}
if (nospace_err == true)
continue;
CHECK(total != max_entries, "lookup with steps",
"total = %u, max_entries = %u\n", total, max_entries);
map_batch_verify(visited, max_entries, keys, values);
total_success++;
}
CHECK(total_success == 0, "check total_success",
"unexpected failure\n");
printf("%s:PASS\n", __func__);
free(keys);
free(values);
free(visited);
}
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