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Commit eee2faab authored by Alexey Kodanev's avatar Alexey Kodanev Committed by David S. Miller
Browse files

tcp: account for ts offset only if tsecr not zero 



We can get SYN with zero tsecr, don't apply offset in this case.

Fixes: ee684b6f ("tcp: send packets with a socket timestamp")
Signed-off-by: default avatarAlexey Kodanev <alexey.kodanev@oracle.com>
Acked-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 00355fa5

net/ipv4/tcp_minisocks.c

+2 −1
Original line number Diff line number Diff line
@@ -101,6 +101,7 @@ tcp_timewait_state_process(struct inet_timewait_sock *tw, struct sk_buff *skb, 
		tcp_parse_options(skb, &tmp_opt, 0, NULL);



		if (tmp_opt.saw_tstamp) {

			if (tmp_opt.rcv_tsecr)

				tmp_opt.rcv_tsecr -= tcptw->tw_ts_offset;

			tmp_opt.ts_recent	= tcptw->tw_ts_recent;

			tmp_opt.ts_recent_stamp	= tcptw->tw_ts_recent_stamp;