Re: [PATCH 2/4] dccp: Implement both feature-local and feature-remote Sequence Window feature

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From: Gerrit Renker <gerrit@xxxxxxxxxxxxxx>
Date: Sat, 17 Jan 2009 10:36:31 +0100

> This adds full support for local/remote Sequence Window feature, from which the 
>   * sequence-number-validity (W) and 
>   * acknowledgment-number-validity (W') windows 
> derive as specified in RFC 4340, 7.5.3. 
> 
> Specifically, the following is contained in this patch:
>   * integrated new socket fields into dccp_sk;
>   * updated the update_gsr/gss routines with regard to these fields;
>   * updated handler code: the Sequence Window feature is located at the TX side,
>     so the local feature is meant if the handler-rx flag is false;
>   * the initialisation of `rcv_wnd' in reqsk is removed, since
>     - rcv_wnd is not used by the code anywhere;
>     - sequence number checks are not done in the LISTEN state (cf. 7.5.3);
>     - dccp_check_req checks the Ack number validity more rigorously;
>   * the `struct dccp_minisock' became empty and is now removed.
> 
> Signed-off-by: Gerrit Renker <gerrit@xxxxxxxxxxxxxx>
> Acked-by: Ian McDonald <ian.mcdonald@xxxxxxxxxxx>

Applied for 2.6.30
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