* Has RFC4821 been implemented?
@ 2016-01-22 19:39 Tom Herbert
2016-01-22 19:50 ` Tom Herbert
0 siblings, 1 reply; 3+ messages in thread
From: Tom Herbert @ 2016-01-22 19:39 UTC (permalink / raw)
To: Linux Kernel Network Developers
This came up on in one of the IETF mailing lists in the context that
PMTUD doesn't really work on the Internet so PLPMTUD is the way to
go. Looking at the code I only see inet_csk_update_pmtu called from
ICMP PTB error. I am missing something?
Thanks,
Tom
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Has RFC4821 been implemented?
2016-01-22 19:39 Has RFC4821 been implemented? Tom Herbert
@ 2016-01-22 19:50 ` Tom Herbert
2016-01-22 21:19 ` Hannes Frederic Sowa
0 siblings, 1 reply; 3+ messages in thread
From: Tom Herbert @ 2016-01-22 19:50 UTC (permalink / raw)
To: Linux Kernel Network Developers
Found it: tcp_mtu_probing
On Fri, Jan 22, 2016 at 11:39 AM, Tom Herbert <tom@herbertland.com> wrote:
> This came up on in one of the IETF mailing lists in the context that
> PMTUD doesn't really work on the Internet so PLPMTUD is the way to
> go. Looking at the code I only see inet_csk_update_pmtu called from
> ICMP PTB error. I am missing something?
>
> Thanks,
> Tom
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Has RFC4821 been implemented?
2016-01-22 19:50 ` Tom Herbert
@ 2016-01-22 21:19 ` Hannes Frederic Sowa
0 siblings, 0 replies; 3+ messages in thread
From: Hannes Frederic Sowa @ 2016-01-22 21:19 UTC (permalink / raw)
To: Tom Herbert, Linux Kernel Network Developers
Hi,
On 22.01.2016 20:50, Tom Herbert wrote:
> Found it: tcp_mtu_probing
Exactly.
> On Fri, Jan 22, 2016 at 11:39 AM, Tom Herbert <tom@herbertland.com> wrote:
>> This came up on in one of the IETF mailing lists in the context that
>> PMTUD doesn't really work on the Internet so PLPMTUD is the way to
>> go. Looking at the code I only see inet_csk_update_pmtu called from
>> ICMP PTB error. I am missing something?
If I recall correctly we don't store the MSS in the inetpeer tcp metrics
cache neither do we update the MTU on the specific path (update the
dst_entry). So it is a one connection only thing so far.
Bye,
Hannes
^ permalink raw reply [flat|nested] 3+ messages in thread
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2016-01-22 19:39 Has RFC4821 been implemented? Tom Herbert
2016-01-22 19:50 ` Tom Herbert
2016-01-22 21:19 ` Hannes Frederic Sowa
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