* MTU Probing
@ 2013-11-15 5:24 Prasad, Shashank
2013-11-15 12:45 ` Neil Horman
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Prasad, Shashank @ 2013-11-15 5:24 UTC (permalink / raw)
To: linux-sctp
Does the kernel SCTP implementation have the implementation of RFC 4821
(Packetization Layer Path MTU Discovery) ? I am using 2.6.32-358.23.2
kernel, and did NOT find the implementation of RFC 4821 yet.
Thanx.
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: MTU Probing
2013-11-15 5:24 MTU Probing Prasad, Shashank
@ 2013-11-15 12:45 ` Neil Horman
2013-11-15 13:00 ` Michael Tuexen
2013-11-15 13:56 ` Vlad Yasevich
2 siblings, 0 replies; 4+ messages in thread
From: Neil Horman @ 2013-11-15 12:45 UTC (permalink / raw)
To: linux-sctp
On Fri, Nov 15, 2013 at 10:42:27AM +0530, Prasad, Shashank wrote:
> Does the kernel SCTP implementation have the implementation of RFC 4821
> (Packetization Layer Path MTU Discovery) ? I am using 2.6.32-358.23.2
> kernel, and did NOT find the implementation of RFC 4821 yet.
>
SCTP gets its mtu for outgoing paths from the ip layer (via dst_mtu). IIRC that
is 4821 compliant
Neil
> Thanx.
> --
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: MTU Probing
2013-11-15 5:24 MTU Probing Prasad, Shashank
2013-11-15 12:45 ` Neil Horman
@ 2013-11-15 13:00 ` Michael Tuexen
2013-11-15 13:56 ` Vlad Yasevich
2 siblings, 0 replies; 4+ messages in thread
From: Michael Tuexen @ 2013-11-15 13:00 UTC (permalink / raw)
To: linux-sctp
On Nov 15, 2013, at 1:45 PM, Neil Horman <nhorman@tuxdriver.com> wrote:
> On Fri, Nov 15, 2013 at 10:42:27AM +0530, Prasad, Shashank wrote:
>> Does the kernel SCTP implementation have the implementation of RFC 4821
>> (Packetization Layer Path MTU Discovery) ? I am using 2.6.32-358.23.2
>> kernel, and did NOT find the implementation of RFC 4821 yet.
>>
> SCTP gets its mtu for outgoing paths from the ip layer (via dst_mtu). IIRC that
And how is the probing done? SCTP wouldn't send messages larger than the PMTU?
Best regards
Michael
> is 4821 compliant
> Neil
>
>> Thanx.
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in
>> the body of a message to majordomo@vger.kernel.org
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>>
> --
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: MTU Probing
2013-11-15 5:24 MTU Probing Prasad, Shashank
2013-11-15 12:45 ` Neil Horman
2013-11-15 13:00 ` Michael Tuexen
@ 2013-11-15 13:56 ` Vlad Yasevich
2 siblings, 0 replies; 4+ messages in thread
From: Vlad Yasevich @ 2013-11-15 13:56 UTC (permalink / raw)
To: linux-sctp
On 11/15/2013 07:45 AM, Neil Horman wrote:
> On Fri, Nov 15, 2013 at 10:42:27AM +0530, Prasad, Shashank wrote:
>> Does the kernel SCTP implementation have the implementation of RFC 4821
>> (Packetization Layer Path MTU Discovery) ? I am using 2.6.32-358.23.2
>> kernel, and did NOT find the implementation of RFC 4821 yet.
>>
> SCTP gets its mtu for outgoing paths from the ip layer (via dst_mtu). IIRC that
> is 4821 compliant
No, ip layer mtu discovery is not 4821 compliant. SCTP does not
implement PMTU probing from 4821. Only TCP in linux appears to support
that.
-vlad
> Neil
>
>> Thanx.
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-11-15 13:56 UTC | newest]
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2013-11-15 5:24 MTU Probing Prasad, Shashank
2013-11-15 12:45 ` Neil Horman
2013-11-15 13:00 ` Michael Tuexen
2013-11-15 13:56 ` Vlad Yasevich
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