1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
39 static u32 seq_scale(u32 seq)  in seq_scale()  argument
47 	 *	we also need to limit the resolution so that the u32 seq  in seq_scale()
51 	return seq + (ktime_get_real_ns() >> 6);  in seq_scale()
67 	if (READ_ONCE(net->ipv4.sysctl_tcp_timestamps) != 1)  in secure_tcpv6_ts_off()
123 	if (READ_ONCE(net->ipv4.sysctl_tcp_timestamps) != 1)  in secure_tcp_ts_off()
164 	u64 seq;  in secure_dccp_sequence_number()  local
166 	seq = siphash_3u32((__force u32)saddr, (__force u32)daddr,  in secure_dccp_sequence_number()
169 	seq += ktime_get_real_ns();  in secure_dccp_sequence_number()
170 	seq &= (1ull << 48) - 1;  in secure_dccp_sequence_number()
171 	return seq;  in secure_dccp_sequence_number()
190 	u64 seq;  in secure_dccpv6_sequence_number()  local
192 	seq = siphash(&combined, offsetofend(typeof(combined), dport),  in secure_dccpv6_sequence_number()
194 	seq += ktime_get_real_ns();  in secure_dccpv6_sequence_number()
195 	seq &= (1ull << 48) - 1;  in secure_dccpv6_sequence_number()
196 	return seq;  in secure_dccpv6_sequence_number()