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

DEFINITIONS

1. test_xdp_adjust_tail

   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 (CHECK_FAIL(err))
  14                 return;
  15 
  16         err = bpf_prog_test_run(prog_fd, 1, &pkt_v4, sizeof(pkt_v4),
  17                                 buf, &size, &retval, &duration);
  18 
  19         CHECK(err || retval != XDP_DROP,
  20               "ipv4", "err %d errno %d retval %d size %d\n",
  21               err, errno, retval, size);
  22 
  23         err = bpf_prog_test_run(prog_fd, 1, &pkt_v6, sizeof(pkt_v6),
  24                                 buf, &size, &retval, &duration);
  25         CHECK(err || retval != XDP_TX || size != 54,
  26               "ipv6", "err %d errno %d retval %d size %d\n",
  27               err, errno, retval, size);
  28         bpf_object__close(obj);
  29 }