LXR linux/tools/testing/selftests/bpf/prog

   1// SPDX-License-Identifier: GPL-2.0
   2#include <test_progs.h>
   3#include <network_helpers.h>
   4
   5static void *spin_lock_thread(void *arg)
   6{
   7        __u32 duration, retval;
   8        int err, prog_fd = *(u32 *) arg;
   9
  10        err = bpf_prog_test_run(prog_fd, 10000, &pkt_v4, sizeof(pkt_v4),
  11                                NULL, NULL, &retval, &duration);
  12        CHECK(err || retval, "",
  13              "err %d errno %d retval %d duration %d\n",
  14              err, errno, retval, duration);
  15        pthread_exit(arg);
  16}
  17
  18void test_spinlock(void)
  19{
  20        const char *file = "./test_spin_lock.o";
  21        pthread_t thread_id[4];
  22        struct bpf_object *obj = NULL;
  23        int prog_fd;
  24        int err = 0, i;
  25        void *ret;
  26
  27        err = bpf_prog_load(file, BPF_PROG_TYPE_CGROUP_SKB, &obj, &prog_fd);
  28        if (CHECK_FAIL(err)) {
  29                printf("test_spin_lock:bpf_prog_load errno %d\n", errno);
  30                goto close_prog;
  31        }
  32        for (i = 0; i < 4; i++)
  33                if (CHECK_FAIL(pthread_create(&thread_id[i], NULL,
  34                                              &spin_lock_thread, &prog_fd)))
  35                        goto close_prog;
  36
  37        for (i = 0; i < 4; i++)
  38                if (CHECK_FAIL(pthread_join(thread_id[i], &ret) ||
  39                               ret != (void *)&prog_fd))
  40                        goto close_prog;
  41close_prog:
  42        bpf_object__close(obj);
  43}
  44