netdev - Re: [v2 PATCH for 2.6.24] SCTP: Implement the Supported Extensions Parameter

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Message-Id: <20070916.155531.42781343.davem@davemloft.net>
Date:	Sun, 16 Sep 2007 15:55:31 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	vladislav.yasevich@...com
Cc:	netdev@...r.kernel.org, lksctp-developers@...ts.sourceforge.net
Subject: Re: [v2 PATCH for 2.6.24] SCTP: Implement the Supported Extensions
 Parameter

From: Vlad Yasevich <vladislav.yasevich@...com>
Date: Thu, 13 Sep 2007 14:45:49 -0400

> [... i can't seem to spell to save my life lately...]
> 
> SCTP Supported Extenions parameter is specified in Section 4.2.7
> of the ADD-IP draft (soon to be RFC).  The parameter is
> encoded as:
> 
>       0                   1                   2                   3
>       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      |     Parameter Type = 0x8008   |      Parameter Length         |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      | CHUNK TYPE 1  |  CHUNK TYPE 2 |  CHUNK TYPE 3 |  CHUNK TYPE 4 |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      |                             ....                              |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      | CHUNK TYPE N  |      PAD      |      PAD      |      PAD      |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> It contains a list of chunks that a particular SCTP extension
> uses.  Current extensions supported are Partial Reliability
> (FWD-TSN) and ADD-IP (ASCONF and ASCONF-ACK).
> 
> When implementing new extensions (AUTH, PKT-DROP, etc..), new
> chunks need to be added to this parameter.  Parameter processing
> would be modified to negotiate support for these new features.
> 
> Signed-off-by: Vlad Yasevich <vladislav.yasevich@...com>

Applied to net-2.6.24, thanks Vlad.
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