1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3 #include <network_helpers.h>
4
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 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 LIBBPF_OPTS(bpf_test_run_opts, topts,
32 .data_out = buf,
33 .data_size_out = sizeof(buf),
34 .repeat = NUM_ITER,
35 );
36
37 err = bpf_prog_test_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
38 if (CHECK_FAIL(err))
39 return;
40
41 map_fd = bpf_find_map(__func__, obj, "vip_map");
42 if (map_fd < 0)
43 goto out;
44 bpf_map_update_elem(map_fd, &key, &value, 0);
45
46 map_fd = bpf_find_map(__func__, obj, "ch_rings");
47 if (map_fd < 0)
48 goto out;
49 bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
50
51 map_fd = bpf_find_map(__func__, obj, "reals");
52 if (map_fd < 0)
53 goto out;
54 bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
55
56 topts.data_in = &pkt_v4;
57 topts.data_size_in = sizeof(pkt_v4);
58
59 err = bpf_prog_test_run_opts(prog_fd, &topts);
60 ASSERT_OK(err, "test_run");
61 ASSERT_EQ(topts.retval, 7 /*TC_ACT_REDIRECT*/, "ipv4 test_run retval");
62 ASSERT_EQ(topts.data_size_out, 54, "ipv4 test_run data_size_out");
63 ASSERT_EQ(*magic, MAGIC_VAL, "ipv4 magic");
64
65 topts.data_in = &pkt_v6;
66 topts.data_size_in = sizeof(pkt_v6);
67 topts.data_size_out = sizeof(buf); /* reset out size */
68
69 err = bpf_prog_test_run_opts(prog_fd, &topts);
70 ASSERT_OK(err, "test_run");
71 ASSERT_EQ(topts.retval, 7 /*TC_ACT_REDIRECT*/, "ipv6 test_run retval");
72 ASSERT_EQ(topts.data_size_out, 74, "ipv6 test_run data_size_out");
73 ASSERT_EQ(*magic, MAGIC_VAL, "ipv6 magic");
74
75 map_fd = bpf_find_map(__func__, obj, "stats");
76 if (map_fd < 0)
77 goto out;
78 bpf_map_lookup_elem(map_fd, &stats_key, stats);
79 for (i = 0; i < nr_cpus; i++) {
80 bytes += stats[i].bytes;
81 pkts += stats[i].pkts;
82 }
83 if (CHECK_FAIL(bytes != MAGIC_BYTES * NUM_ITER * 2 ||
84 pkts != NUM_ITER * 2))
85 printf("test_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);
86 out:
87 bpf_object__close(obj);
88 }
89
90 void test_l4lb_all(void)
91 {
92 if (test__start_subtest("l4lb_inline"))
93 test_l4lb("test_l4lb.bpf.o");
94 if (test__start_subtest("l4lb_noinline"))
95 test_l4lb("test_l4lb_noinline.bpf.o");
96 if (test__start_subtest("l4lb_noinline_dynptr"))
97 test_l4lb("test_l4lb_noinline_dynptr.bpf.o");
98 }
99
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