[Differential] [Commented On] D5872: tcp: Don't prematurely drop receiving-only connections
sepherosa_gmail.com (Sepherosa Ziehau)
phabric-noreply at FreeBSD.org
Mon Apr 18 01:39:14 UTC 2016
sepherosa_gmail.com added a comment.
In https://reviews.freebsd.org/D5872#127372, @mike-karels.net wrote:
> Setting a retransmission timer on an ACK makes no sense; I don't think tcp_output will send an ACK on a retransmission timeout.
>
> Setting timers in the ENOBUFS case is at best a partial fix. If the ACK is lost locally, we know; if it is lost elsewhere, we don't. We need timers in any case.
>
> Setting a local timer for the ACK case is no better for latency than having the other end run a retransmit timer..
>
> If there is a problem with setting the retransmit timer for a FIN, let's fix that. Otherwise, I stand by my recommendation of deleting the code to set a timer.
Yeah, delete the retransmission timeout is fine w/ me. Do we reach consensus here?
REVISION DETAIL
https://reviews.freebsd.org/D5872
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To: sepherosa_gmail.com, network, glebius, lstewart, adrian, delphij, decui_microsoft.com, honzhan_microsoft.com, howard0su_gmail.com, freebsd-net-list, transport, jtl, hiren
Cc: mike-karels.net, jtl
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