tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <test_progs.h>
   3
   4 void test_xdp_adjust_tail(void)
   5 {
   6         const char *file = "./test_adjust_tail.o";
   7         struct bpf_object *obj;
   8         char buf[128];
   9         __u32 duration, retval, size;
  10         int err, prog_fd;
  11
  12         err = bpf_prog_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
  13         if (err) {
  14                 error_cnt++;
  15                 return;
  16         }
  17
  18         err = bpf_prog_test_run(prog_fd, 1, &pkt_v4, sizeof(pkt_v4),
  19                                 buf, &size, &retval, &duration);
  20
  21         CHECK(err || retval != XDP_DROP,
  22               "ipv4", "err %d errno %d retval %d size %d\n",
  23               err, errno, retval, size);
  24
  25         err = bpf_prog_test_run(prog_fd, 1, &pkt_v6, sizeof(pkt_v6),
  26                                 buf, &size, &retval, &duration);
  27         CHECK(err || retval != XDP_TX || size != 54,
  28               "ipv6", "err %d errno %d retval %d size %d\n",
  29               err, errno, retval, size);
  30         bpf_object__close(obj);
  31 }