cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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l4lb_all.c (2583B)

      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	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);
     86out:
     87	bpf_object__close(obj);
     88}
     89
     90void 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}