1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3 #include <network_helpers.h>
4
test_l4lb(const char * file)5 static void test_l4lb(const char *file)
6 {
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_SCHED_CLS, &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 != 7/*TC_ACT_REDIRECT*/ || 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 != 7/*TC_ACT_REDIRECT*/ || 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_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);
77 out:
78 bpf_object__close(obj);
79 }
80
test_l4lb_all(void)81 void test_l4lb_all(void)
82 {
83 if (test__start_subtest("l4lb_inline"))
84 test_l4lb("test_l4lb.o");
85 if (test__start_subtest("l4lb_noinline"))
86 test_l4lb("test_l4lb_noinline.o");
87 }
88