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

   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 (err) {
  35                 error_cnt++;
  36                 return;
  37         }
  38
  39         map_fd = bpf_find_map(__func__, obj, "vip_map");
  40         if (map_fd < 0)
  41                 goto out;
  42         bpf_map_update_elem(map_fd, &key, &value, 0);
  43
  44         map_fd = bpf_find_map(__func__, obj, "ch_rings");
  45         if (map_fd < 0)
  46                 goto out;
  47         bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
  48
  49         map_fd = bpf_find_map(__func__, obj, "reals");
  50         if (map_fd < 0)
  51                 goto out;
  52         bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
  53
  54         err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v4, sizeof(pkt_v4),
  55                                 buf, &size, &retval, &duration);
  56         CHECK(err || retval != 1 || size != 54 ||
  57               *magic != MAGIC_VAL, "ipv4",
  58               "err %d errno %d retval %d size %d magic %x\n",
  59               err, errno, retval, size, *magic);
  60
  61         err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v6, sizeof(pkt_v6),
  62                                 buf, &size, &retval, &duration);
  63         CHECK(err || retval != 1 || size != 74 ||
  64               *magic != MAGIC_VAL, "ipv6",
  65               "err %d errno %d retval %d size %d magic %x\n",
  66               err, errno, retval, size, *magic);
  67
  68         map_fd = bpf_find_map(__func__, obj, "stats");
  69         if (map_fd < 0)
  70                 goto out;
  71         bpf_map_lookup_elem(map_fd, &stats_key, stats);
  72         for (i = 0; i < nr_cpus; i++) {
  73                 bytes += stats[i].bytes;
  74                 pkts += stats[i].pkts;
  75         }
  76         if (bytes != MAGIC_BYTES * NUM_ITER * 2 || pkts != NUM_ITER * 2) {
  77                 error_cnt++;
  78                 printf("test_xdp_noinline:FAIL:stats %lld %lld\n", bytes, pkts);
  79         }
  80 out:
  81         bpf_object__close(obj);
  82 }