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// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2022 Linutronix GmbH */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
char _license[] SEC("license") = "GPL";
SEC("tc")
int time_tai(struct __sk_buff *skb)
{
__u64 ts1, ts2;
/* Get TAI timestamps */
ts1 = bpf_ktime_get_tai_ns();
ts2 = bpf_ktime_get_tai_ns();
/* Save TAI timestamps (Note: skb->hwtstamp is read-only) */
skb->tstamp = ts1;
skb->cb[0] = ts2 & 0xffffffff;
skb->cb[1] = ts2 >> 32;
return 0;
}
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