Re: [PATCH net] sctp: improve the events for sctp stream reset

[David Miller]

From: Xin Long <lucien.xin@xxxxxxxxx>
Date: Tue, 22 Jan 2019 02:39:34 +0800

> This patch is to improve sctp stream reset events in 4 places:
> 
>   1. In sctp_process_strreset_outreq(), the flag should always be set with
>      SCTP_STREAM_RESET_INCOMING_SSN instead of OUTGOING, as receiver's in
>      stream is reset here.
>   2. In sctp_process_strreset_outreq(), move up SCTP_STRRESET_ERR_WRONG_SSN
>      check, as the reset has to succeed after reconf_timer stops for the
>      in stream reset request retransmission.
>   3. In sctp_process_strreset_inreq(), no event should be sent, as no in
>      or out stream is reset here.
>   4. In sctp_process_strreset_resp(), SCTP_STREAM_RESET_INCOMING_SSN or
>      OUTGOING event should always be sent for stream reset requests, no
>      matter it fails or succeeds to process the request.
> 
> Fixes: 810544764536 ("sctp: implement receiver-side procedures for the Outgoing SSN Reset Request Parameter")
> Fixes: 16e1a91965b0 ("sctp: implement receiver-side procedures for the Incoming SSN Reset Request Parameter")
> Fixes: 11ae76e67a17 ("sctp: implement receiver-side procedures for the Reconf Response Parameter")
> Reported-by: Ying Xu <yinxu@xxxxxxxxxx>
> Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>

Applied and queued up for -stable.