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

DEFINITIONS

1. test_l4lb
2. test_l4lb_all

   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 (CHECK_FAIL(err))
  34                 return;
  35 
  36         map_fd = bpf_find_map(__func__, obj, "vip_map");
  37         if (map_fd < 0)
  38                 goto out;
  39         bpf_map_update_elem(map_fd, &key, &value, 0);
  40 
  41         map_fd = bpf_find_map(__func__, obj, "ch_rings");
  42         if (map_fd < 0)
  43                 goto out;
  44         bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
  45 
  46         map_fd = bpf_find_map(__func__, obj, "reals");
  47         if (map_fd < 0)
  48                 goto out;
  49         bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
  50 
  51         err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v4, sizeof(pkt_v4),
  52                                 buf, &size, &retval, &duration);
  53         CHECK(err || retval != 7/*TC_ACT_REDIRECT*/ || size != 54 ||
  54               *magic != MAGIC_VAL, "ipv4",
  55               "err %d errno %d retval %d size %d magic %x\n",
  56               err, errno, retval, size, *magic);
  57 
  58         err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v6, sizeof(pkt_v6),
  59                                 buf, &size, &retval, &duration);
  60         CHECK(err || retval != 7/*TC_ACT_REDIRECT*/ || size != 74 ||
  61               *magic != MAGIC_VAL, "ipv6",
  62               "err %d errno %d retval %d size %d magic %x\n",
  63               err, errno, retval, size, *magic);
  64 
  65         map_fd = bpf_find_map(__func__, obj, "stats");
  66         if (map_fd < 0)
  67                 goto out;
  68         bpf_map_lookup_elem(map_fd, &stats_key, stats);
  69         for (i = 0; i < nr_cpus; i++) {
  70                 bytes += stats[i].bytes;
  71                 pkts += stats[i].pkts;
  72         }
  73         if (CHECK_FAIL(bytes != MAGIC_BYTES * NUM_ITER * 2 ||
  74                        pkts != NUM_ITER * 2))
  75                 printf("test_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);
  76 out:
  77         bpf_object__close(obj);
  78 }
  79 
  80 void test_l4lb_all(void)
  81 {
  82         const char *file1 = "./test_l4lb.o";
  83         const char *file2 = "./test_l4lb_noinline.o";
  84 
  85         test_l4lb(file1);
  86         test_l4lb(file2);
  87 }