75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/* Copyright (C) 2022 Linutronix GmbH */
|
||
|
|
|
||
|
|
#include <test_progs.h>
|
||
|
|
#include <network_helpers.h>
|
||
|
|
|
||
|
|
#include "test_time_tai.skel.h"
|
||
|
|
|
||
|
|
#include <time.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
#define TAI_THRESHOLD 1000000000ULL /* 1s */
|
||
|
|
#define NSEC_PER_SEC 1000000000ULL
|
||
|
|
|
||
|
|
static __u64 ts_to_ns(const struct timespec *ts)
|
||
|
|
{
|
||
|
|
return ts->tv_sec * NSEC_PER_SEC + ts->tv_nsec;
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_time_tai(void)
|
||
|
|
{
|
||
|
|
struct __sk_buff skb = {
|
||
|
|
.cb[0] = 0,
|
||
|
|
.cb[1] = 0,
|
||
|
|
.tstamp = 0,
|
||
|
|
};
|
||
|
|
LIBBPF_OPTS(bpf_test_run_opts, topts,
|
||
|
|
.data_in = &pkt_v4,
|
||
|
|
.data_size_in = sizeof(pkt_v4),
|
||
|
|
.ctx_in = &skb,
|
||
|
|
.ctx_size_in = sizeof(skb),
|
||
|
|
.ctx_out = &skb,
|
||
|
|
.ctx_size_out = sizeof(skb),
|
||
|
|
);
|
||
|
|
struct test_time_tai *skel;
|
||
|
|
struct timespec now_tai;
|
||
|
|
__u64 ts1, ts2, now;
|
||
|
|
int ret, prog_fd;
|
||
|
|
|
||
|
|
/* Open and load */
|
||
|
|
skel = test_time_tai__open_and_load();
|
||
|
|
if (!ASSERT_OK_PTR(skel, "tai_open"))
|
||
|
|
return;
|
||
|
|
|
||
|
|
/* Run test program */
|
||
|
|
prog_fd = bpf_program__fd(skel->progs.time_tai);
|
||
|
|
ret = bpf_prog_test_run_opts(prog_fd, &topts);
|
||
|
|
ASSERT_OK(ret, "test_run");
|
||
|
|
|
||
|
|
/* Retrieve generated TAI timestamps */
|
||
|
|
ts1 = skb.tstamp;
|
||
|
|
ts2 = skb.cb[0] | ((__u64)skb.cb[1] << 32);
|
||
|
|
|
||
|
|
/* TAI != 0 */
|
||
|
|
ASSERT_NEQ(ts1, 0, "tai_ts1");
|
||
|
|
ASSERT_NEQ(ts2, 0, "tai_ts2");
|
||
|
|
|
||
|
|
/* TAI is moving forward only */
|
||
|
|
ASSERT_GT(ts2, ts1, "tai_forward");
|
||
|
|
|
||
|
|
/* Check for future */
|
||
|
|
ret = clock_gettime(CLOCK_TAI, &now_tai);
|
||
|
|
ASSERT_EQ(ret, 0, "tai_gettime");
|
||
|
|
now = ts_to_ns(&now_tai);
|
||
|
|
|
||
|
|
ASSERT_TRUE(now > ts1, "tai_future_ts1");
|
||
|
|
ASSERT_TRUE(now > ts2, "tai_future_ts2");
|
||
|
|
|
||
|
|
/* Check for reasonable range */
|
||
|
|
ASSERT_TRUE(now - ts1 < TAI_THRESHOLD, "tai_range_ts1");
|
||
|
|
ASSERT_TRUE(now - ts2 < TAI_THRESHOLD, "tai_range_ts2");
|
||
|
|
|
||
|
|
test_time_tai__destroy(skel);
|
||
|
|
}
|