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.o");
94 	if (test__start_subtest("l4lb_noinline"))
95 		test_l4lb("test_l4lb_noinline.o");
96 }
97