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

DEFINITIONS

1. test_xdp_noinline

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <test_progs.h>
   3 
   4 void test_xdp_noinline(void)
   5 {
   6         const char *file = "./test_xdp_noinline.o";
   7         unsigned int nr_cpus = bpf_num_possible_cpus();
   8         struct vip key = {.protocol = 6};
   9         struct vip_meta {
  10                 __u32 flags;
  11                 __u32 vip_num;
  12         } value = {.vip_num = VIP_NUM};
  13         __u32 stats_key = VIP_NUM;
  14         struct vip_stats {
  15                 __u64 bytes;
  16                 __u64 pkts;
  17         } stats[nr_cpus];
  18         struct real_definition {
  19                 union {
  20                         __be32 dst;
  21                         __be32 dstv6[4];
  22                 };
  23                 __u8 flags;
  24         } real_def = {.dst = MAGIC_VAL};
  25         __u32 ch_key = 11, real_num = 3;
  26         __u32 duration, retval, size;
  27         int err, i, prog_fd, map_fd;
  28         __u64 bytes = 0, pkts = 0;
  29         struct bpf_object *obj;
  30         char buf[128];
  31         u32 *magic = (u32 *)buf;
  32 
  33         err = bpf_prog_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
  34         if (CHECK_FAIL(err))
  35                 return;
  36 
  37         map_fd = bpf_find_map(__func__, obj, "vip_map");
  38         if (map_fd < 0)
  39                 goto out;
  40         bpf_map_update_elem(map_fd, &key, &value, 0);
  41 
  42         map_fd = bpf_find_map(__func__, obj, "ch_rings");
  43         if (map_fd < 0)
  44                 goto out;
  45         bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
  46 
  47         map_fd = bpf_find_map(__func__, obj, "reals");
  48         if (map_fd < 0)
  49                 goto out;
  50         bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
  51 
  52         err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v4, sizeof(pkt_v4),
  53                                 buf, &size, &retval, &duration);
  54         CHECK(err || retval != 1 || size != 54 ||
  55               *magic != MAGIC_VAL, "ipv4",
  56               "err %d errno %d retval %d size %d magic %x\n",
  57               err, errno, retval, size, *magic);
  58 
  59         err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v6, sizeof(pkt_v6),
  60                                 buf, &size, &retval, &duration);
  61         CHECK(err || retval != 1 || size != 74 ||
  62               *magic != MAGIC_VAL, "ipv6",
  63               "err %d errno %d retval %d size %d magic %x\n",
  64               err, errno, retval, size, *magic);
  65 
  66         map_fd = bpf_find_map(__func__, obj, "stats");
  67         if (map_fd < 0)
  68                 goto out;
  69         bpf_map_lookup_elem(map_fd, &stats_key, stats);
  70         for (i = 0; i < nr_cpus; i++) {
  71                 bytes += stats[i].bytes;
  72                 pkts += stats[i].pkts;
  73         }
  74         if (CHECK_FAIL(bytes != MAGIC_BYTES * NUM_ITER * 2 ||
  75                        pkts != NUM_ITER * 2)) {
  76                 printf("test_xdp_noinline:FAIL:stats %lld %lld\n",
  77                        bytes, pkts);
  78         }
  79 out:
  80         bpf_object__close(obj);
  81 }