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From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
To: Xin Long <lucien.xin@gmail.com>
Cc: network dev <netdev@vger.kernel.org>,
	davem@davemloft.net, kuba@kernel.org, linux-sctp@vger.kernel.org
Subject: Re: [PATCH net-next 00/14] sctp: implement RFC8899: Packetization Layer Path MTU Discovery for SCTP transport
Date: Mon, 21 Jun 2021 22:30:17 -0300	[thread overview]
Message-ID: <YNE9KTlOkzUjgr4c@horizon.localdomain> (raw)
In-Reply-To: <cover.1624239422.git.lucien.xin@gmail.com>

On Sun, Jun 20, 2021 at 09:38:35PM -0400, Xin Long wrote:
> Overview(From RFC8899):
> 
>   In contrast to PMTUD, Packetization Layer Path MTU Discovery
>   (PLPMTUD) [RFC4821] introduces a method that does not rely upon
>   reception and validation of PTB messages.  It is therefore more
>   robust than Classical PMTUD.  This has become the recommended
>   approach for implementing discovery of the PMTU [BCP145].
> 
>   It uses a general strategy in which the PL sends probe packets to
>   search for the largest size of unfragmented datagram that can be sent
>   over a network path.  Probe packets are sent to explore using a
>   larger packet size.  If a probe packet is successfully delivered (as
>   determined by the PL), then the PLPMTU is raised to the size of the
>   successful probe.  If a black hole is detected (e.g., where packets
>   of size PLPMTU are consistently not received), the method reduces the
>   PLPMTU.

Thanks Xin!

Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>

      parent reply	other threads:[~2021-06-22  1:30 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-21  1:38 [PATCH net-next 00/14] sctp: implement RFC8899: Packetization Layer Path MTU Discovery for SCTP transport Xin Long
2021-06-21  1:38 ` [PATCH net-next 01/14] sctp: add pad chunk and its make function and event table Xin Long
2021-06-21  1:38 ` [PATCH net-next 02/14] sctp: add probe_interval in sysctl and sock/asoc/transport Xin Long
2021-06-21  1:38 ` [PATCH net-next 03/14] sctp: add SCTP_PLPMTUD_PROBE_INTERVAL sockopt for sock/asoc/transport Xin Long
2021-06-21  1:38 ` [PATCH net-next 04/14] sctp: add the constants/variables and states and some APIs for transport Xin Long
2021-06-21  1:38 ` [PATCH net-next 05/14] sctp: add the probe timer in transport for PLPMTUD Xin Long
2021-06-21  1:38 ` [PATCH net-next 06/14] sctp: do the basic send and recv for PLPMTUD probe Xin Long
2021-06-21  3:49   ` kernel test robot
2021-06-22  1:13     ` Xin Long
2021-06-22 17:02       ` David Miller
2021-06-21  1:38 ` [PATCH net-next 07/14] sctp: do state transition when PROBE_COUNT == MAX_PROBES on HB send path Xin Long
2021-06-21  1:38 ` [PATCH net-next 08/14] sctp: do state transition when a probe succeeds on HB ACK recv path Xin Long
2021-06-21  1:38 ` [PATCH net-next 09/14] sctp: do state transition when receiving an icmp TOOBIG packet Xin Long
2021-06-21  1:38 ` [PATCH net-next 10/14] sctp: enable PLPMTUD when the transport is ready Xin Long
2021-06-21  1:38 ` [PATCH net-next 11/14] sctp: remove the unessessary hold for idev in sctp_v6_err Xin Long
2021-06-21  1:38 ` [PATCH net-next 12/14] sctp: extract sctp_v6_err_handle function from sctp_v6_err Xin Long
2021-06-21  1:38 ` [PATCH net-next 13/14] sctp: extract sctp_v4_err_handle function from sctp_v4_err Xin Long
2021-06-21  1:38 ` [PATCH net-next 14/14] sctp: process sctp over udp icmp err on sctp side Xin Long
2021-06-22  1:30 ` Marcelo Ricardo Leitner [this message]

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