1// SPDX-License-Identifier: GPL-2.0
 2#include <test_progs.h>
 3#include <network_helpers.h>
 4
 5static 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);
77out:
78	bpf_object__close(obj);
79}
80
81void 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}