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Revert "tcp: fix to allow timestamp undo if no retransmits were sent"

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This reverts commit 0295a863b0.
This commit is contained in:
Ksawlii 2024-11-24 00:22:57 +01:00
parent 15d63378f5
commit 5cb636f7a4
1 changed files with 2 additions and 16 deletions
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18
net/ipv4/tcp_input.c
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@ -2424,22 +2424,8 @@ static bool tcp_skb_spurious_retrans(const struct tcp_sock *tp,
*/
static inline bool tcp_packet_delayed(const struct tcp_sock *tp)
{
const struct sock *sk = (const struct sock *)tp;
if (tp->retrans_stamp &&
tcp_tsopt_ecr_before(tp, tp->retrans_stamp))
return true; /* got echoed TS before first retransmission */
/* Check if nothing was retransmitted (retrans_stamp==0), which may
* happen in fast recovery due to TSQ. But we ignore zero retrans_stamp
* in TCP_SYN_SENT, since when we set FLAG_SYN_ACKED we also clear
* retrans_stamp even if we had retransmitted the SYN.
*/
if (!tp->retrans_stamp && /* no record of a retransmit/SYN? */
sk->sk_state != TCP_SYN_SENT) /* not the FLAG_SYN_ACKED case? */
return true; /* nothing was retransmitted */
return false;
return tp->retrans_stamp &&
tcp_tsopt_ecr_before(tp, tp->retrans_stamp);
}
/* Undo procedures. */