bpf/prog_tests/l4lb_all.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include <test_progs.h>
0003 #include <network_helpers.h>
0004
0005 static void test_l4lb(const char *file)
0006 {
0007     unsigned int nr_cpus = bpf_num_possible_cpus();
0008     struct vip key = {.protocol = 6};
0009     struct vip_meta {
0010         __u32 flags;
0011         __u32 vip_num;
0012     } value = {.vip_num = VIP_NUM};
0013     __u32 stats_key = VIP_NUM;
0014     struct vip_stats {
0015         __u64 bytes;
0016         __u64 pkts;
0017     } stats[nr_cpus];
0018     struct real_definition {
0019         union {
0020             __be32 dst;
0021             __be32 dstv6[4];
0022         };
0023         __u8 flags;
0024     } real_def = {.dst = MAGIC_VAL};
0025     __u32 ch_key = 11, real_num = 3;
0026     int err, i, prog_fd, map_fd;
0027     __u64 bytes = 0, pkts = 0;
0028     struct bpf_object *obj;
0029     char buf[128];
0030     u32 *magic = (u32 *)buf;
0031     LIBBPF_OPTS(bpf_test_run_opts, topts,
0032         .data_out = buf,
0033         .data_size_out = sizeof(buf),
0034         .repeat = NUM_ITER,
0035     );
0036
0037     err = bpf_prog_test_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
0038     if (CHECK_FAIL(err))
0039         return;
0040
0041     map_fd = bpf_find_map(__func__, obj, "vip_map");
0042     if (map_fd < 0)
0043         goto out;
0044     bpf_map_update_elem(map_fd, &key, &value, 0);
0045
0046     map_fd = bpf_find_map(__func__, obj, "ch_rings");
0047     if (map_fd < 0)
0048         goto out;
0049     bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
0050
0051     map_fd = bpf_find_map(__func__, obj, "reals");
0052     if (map_fd < 0)
0053         goto out;
0054     bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
0055
0056     topts.data_in = &pkt_v4;
0057     topts.data_size_in = sizeof(pkt_v4);
0058
0059     err = bpf_prog_test_run_opts(prog_fd, &topts);
0060     ASSERT_OK(err, "test_run");
0061     ASSERT_EQ(topts.retval, 7 /*TC_ACT_REDIRECT*/, "ipv4 test_run retval");
0062     ASSERT_EQ(topts.data_size_out, 54, "ipv4 test_run data_size_out");
0063     ASSERT_EQ(*magic, MAGIC_VAL, "ipv4 magic");
0064
0065     topts.data_in = &pkt_v6;
0066     topts.data_size_in = sizeof(pkt_v6);
0067     topts.data_size_out = sizeof(buf); /* reset out size */
0068
0069     err = bpf_prog_test_run_opts(prog_fd, &topts);
0070     ASSERT_OK(err, "test_run");
0071     ASSERT_EQ(topts.retval, 7 /*TC_ACT_REDIRECT*/, "ipv6 test_run retval");
0072     ASSERT_EQ(topts.data_size_out, 74, "ipv6 test_run data_size_out");
0073     ASSERT_EQ(*magic, MAGIC_VAL, "ipv6 magic");
0074
0075     map_fd = bpf_find_map(__func__, obj, "stats");
0076     if (map_fd < 0)
0077         goto out;
0078     bpf_map_lookup_elem(map_fd, &stats_key, stats);
0079     for (i = 0; i < nr_cpus; i++) {
0080         bytes += stats[i].bytes;
0081         pkts += stats[i].pkts;
0082     }
0083     if (CHECK_FAIL(bytes != MAGIC_BYTES * NUM_ITER * 2 ||
0084                pkts != NUM_ITER * 2))
0085         printf("test_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);
0086 out:
0087     bpf_object__close(obj);
0088 }
0089
0090 void test_l4lb_all(void)
0091 {
0092     if (test__start_subtest("l4lb_inline"))
0093         test_l4lb("test_l4lb.o");
0094     if (test__start_subtest("l4lb_noinline"))
0095         test_l4lb("test_l4lb_noinline.o");
0096 }