Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include <network_helpers.h>
 
static void *spin_lock_thread(void *arg)
{
<------>__u32 duration, retval;
<------>int err, prog_fd = *(u32 *) arg;
 
<------>err = bpf_prog_test_run(prog_fd, 10000, &pkt_v4, sizeof(pkt_v4),
<------><------><------><------>NULL, NULL, &retval, &duration);
<------>CHECK(err || retval, "",
<------>      "err %d errno %d retval %d duration %d\n",
<------>      err, errno, retval, duration);
<------>pthread_exit(arg);
}
 
static void *parallel_map_access(void *arg)
{
<------>int err, map_fd = *(u32 *) arg;
<------>int vars[17], i, j, rnd, key = 0;
 
<------>for (i = 0; i < 10000; i++) {
<------><------>err = bpf_map_lookup_elem_flags(map_fd, &key, vars, BPF_F_LOCK);
<------><------>if (CHECK_FAIL(err)) {
<------><------><------>printf("lookup failed\n");
<------><------><------>goto out;
<------><------>}
<------><------>if (CHECK_FAIL(vars[0] != 0)) {
<------><------><------>printf("lookup #%d var[0]=%d\n", i, vars[0]);
<------><------><------>goto out;
<------><------>}
<------><------>rnd = vars[1];
<------><------>for (j = 2; j < 17; j++) {
<------><------><------>if (vars[j] == rnd)
<------><------><------><------>continue;
<------><------><------>printf("lookup #%d var[1]=%d var[%d]=%d\n",
<------><------><------>       i, rnd, j, vars[j]);
<------><------><------>CHECK_FAIL(vars[j] != rnd);
<------><------><------>goto out;
<------><------>}
<------>}
out:
<------>pthread_exit(arg);
}
 
void test_map_lock(void)
{
<------>const char *file = "./test_map_lock.o";
<------>int prog_fd, map_fd[2], vars[17] = {};
<------>pthread_t thread_id[6];
<------>struct bpf_object *obj = NULL;
<------>int err = 0, key = 0, i;
<------>void *ret;
 
<------>err = bpf_prog_load(file, BPF_PROG_TYPE_CGROUP_SKB, &obj, &prog_fd);
<------>if (CHECK_FAIL(err)) {
<------><------>printf("test_map_lock:bpf_prog_load errno %d\n", errno);
<------><------>goto close_prog;
<------>}
<------>map_fd[0] = bpf_find_map(__func__, obj, "hash_map");
<------>if (CHECK_FAIL(map_fd[0] < 0))
<------><------>goto close_prog;
<------>map_fd[1] = bpf_find_map(__func__, obj, "array_map");
<------>if (CHECK_FAIL(map_fd[1] < 0))
<------><------>goto close_prog;
 
<------>bpf_map_update_elem(map_fd[0], &key, vars, BPF_F_LOCK);
 
<------>for (i = 0; i < 4; i++)
<------><------>if (CHECK_FAIL(pthread_create(&thread_id[i], NULL,
<------><------><------><------><------>      &spin_lock_thread, &prog_fd)))
<------><------><------>goto close_prog;
<------>for (i = 4; i < 6; i++)
<------><------>if (CHECK_FAIL(pthread_create(&thread_id[i], NULL,
<------><------><------><------><------>      &parallel_map_access,
<------><------><------><------><------>      &map_fd[i - 4])))
<------><------><------>goto close_prog;
<------>for (i = 0; i < 4; i++)
<------><------>if (CHECK_FAIL(pthread_join(thread_id[i], &ret) ||
<------><------><------>       ret != (void *)&prog_fd))
<------><------><------>goto close_prog;
<------>for (i = 4; i < 6; i++)
<------><------>if (CHECK_FAIL(pthread_join(thread_id[i], &ret) ||
<------><------><------>       ret != (void *)&map_fd[i - 4]))
<------><------><------>goto close_prog;
close_prog:
<------>bpf_object__close(obj);
}