tools/testing/selftests/bpf/prog_tests/l4lb_all.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <test_progs.h>
   3
   4 static void test_l4lb(const char *file)
   5 {
   6         unsigned int nr_cpus = bpf_num_possible_cpus();
   7         struct vip key = {.protocol = 6};
   8         struct vip_meta {
   9                 __u32 flags;
  10                 __u32 vip_num;
  11         } value = {.vip_num = VIP_NUM};
  12         __u32 stats_key = VIP_NUM;
  13         struct vip_stats {
  14                 __u64 bytes;
  15                 __u64 pkts;
  16         } stats[nr_cpus];
  17         struct real_definition {
  18                 union {
  19                         __be32 dst;
  20                         __be32 dstv6[4];
  21                 };
  22                 __u8 flags;
  23         } real_def = {.dst = MAGIC_VAL};
  24         __u32 ch_key = 11, real_num = 3;
  25         __u32 duration, retval, size;
  26         int err, i, prog_fd, map_fd;
  27         __u64 bytes = 0, pkts = 0;
  28         struct bpf_object *obj;
  29         char buf[128];
  30         u32 *magic = (u32 *)buf;
  31
  32         err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
  33         if (err) {
  34                 error_cnt++;
  35                 return;
  36         }
  37
  38         map_fd = bpf_find_map(__func__, obj, "vip_map");
  39         if (map_fd < 0)
  40                 goto out;
  41         bpf_map_update_elem(map_fd, &key, &value, 0);
  42
  43         map_fd = bpf_find_map(__func__, obj, "ch_rings");
  44         if (map_fd < 0)
  45                 goto out;
  46         bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
  47
  48         map_fd = bpf_find_map(__func__, obj, "reals");
  49         if (map_fd < 0)
  50                 goto out;
  51         bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
  52
  53         err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v4, sizeof(pkt_v4),
  54                                 buf, &size, &retval, &duration);
  55         CHECK(err || retval != 7/*TC_ACT_REDIRECT*/ || size != 54 ||
  56               *magic != MAGIC_VAL, "ipv4",
  57               "err %d errno %d retval %d size %d magic %x\n",
  58               err, errno, retval, size, *magic);
  59
  60         err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v6, sizeof(pkt_v6),
  61                                 buf, &size, &retval, &duration);
  62         CHECK(err || retval != 7/*TC_ACT_REDIRECT*/ || size != 74 ||
  63               *magic != MAGIC_VAL, "ipv6",
  64               "err %d errno %d retval %d size %d magic %x\n",
  65               err, errno, retval, size, *magic);
  66
  67         map_fd = bpf_find_map(__func__, obj, "stats");
  68         if (map_fd < 0)
  69                 goto out;
  70         bpf_map_lookup_elem(map_fd, &stats_key, stats);
  71         for (i = 0; i < nr_cpus; i++) {
  72                 bytes += stats[i].bytes;
  73                 pkts += stats[i].pkts;
  74         }
  75         if (bytes != MAGIC_BYTES * NUM_ITER * 2 || pkts != NUM_ITER * 2) {
  76                 error_cnt++;
  77                 printf("test_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);
  78         }
  79 out:
  80         bpf_object__close(obj);
  81 }
  82
  83 void test_l4lb_all(void)
  84 {
  85         const char *file1 = "./test_l4lb.o";
  86         const char *file2 = "./test_l4lb_noinline.o";
  87
  88         test_l4lb(file1);
  89         test_l4lb(file2);
  90 }