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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prog_run_opts.c (1942B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <test_progs.h>
      3#include <network_helpers.h>
      4
      5#include "test_pkt_access.skel.h"
      6
      7static const __u32 duration;
      8
      9static void check_run_cnt(int prog_fd, __u64 run_cnt)
     10{
     11	struct bpf_prog_info info = {};
     12	__u32 info_len = sizeof(info);
     13	int err;
     14
     15	err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
     16	if (CHECK(err, "get_prog_info", "failed to get bpf_prog_info for fd %d\n", prog_fd))
     17		return;
     18
     19	CHECK(run_cnt != info.run_cnt, "run_cnt",
     20	      "incorrect number of repetitions, want %llu have %llu\n", run_cnt, info.run_cnt);
     21}
     22
     23void test_prog_run_opts(void)
     24{
     25	struct test_pkt_access *skel;
     26	int err, stats_fd = -1, prog_fd;
     27	char buf[10] = {};
     28	__u64 run_cnt = 0;
     29
     30	LIBBPF_OPTS(bpf_test_run_opts, topts,
     31		.repeat = 1,
     32		.data_in = &pkt_v4,
     33		.data_size_in = sizeof(pkt_v4),
     34		.data_out = buf,
     35		.data_size_out = 5,
     36	);
     37
     38	stats_fd = bpf_enable_stats(BPF_STATS_RUN_TIME);
     39	if (!ASSERT_GE(stats_fd, 0, "enable_stats good fd"))
     40		return;
     41
     42	skel = test_pkt_access__open_and_load();
     43	if (!ASSERT_OK_PTR(skel, "open_and_load"))
     44		goto cleanup;
     45
     46	prog_fd = bpf_program__fd(skel->progs.test_pkt_access);
     47
     48	err = bpf_prog_test_run_opts(prog_fd, &topts);
     49	ASSERT_EQ(errno, ENOSPC, "test_run errno");
     50	ASSERT_ERR(err, "test_run");
     51	ASSERT_OK(topts.retval, "test_run retval");
     52
     53	ASSERT_EQ(topts.data_size_out, sizeof(pkt_v4), "test_run data_size_out");
     54	ASSERT_EQ(buf[5], 0, "overflow, BPF_PROG_TEST_RUN ignored size hint");
     55
     56	run_cnt += topts.repeat;
     57	check_run_cnt(prog_fd, run_cnt);
     58
     59	topts.data_out = NULL;
     60	topts.data_size_out = 0;
     61	topts.repeat = 2;
     62	errno = 0;
     63
     64	err = bpf_prog_test_run_opts(prog_fd, &topts);
     65	ASSERT_OK(errno, "run_no_output errno");
     66	ASSERT_OK(err, "run_no_output err");
     67	ASSERT_OK(topts.retval, "run_no_output retval");
     68
     69	run_cnt += topts.repeat;
     70	check_run_cnt(prog_fd, run_cnt);
     71
     72cleanup:
     73	if (skel)
     74		test_pkt_access__destroy(skel);
     75	if (stats_fd >= 0)
     76		close(stats_fd);
     77}