On Wed, May 02, 2018 at 01:39:46PM +0800, Xin Long wrote:
> When processing a duplicate cookie-echo chunk, for case 'D', sctp will
> not process the param from this chunk. It means old asoc has nothing
> to be updated, and the new temp asoc doesn't have the complete info.
>
> So there's no reason to use the new asoc when creating the cookie-ack
> chunk. Otherwise, like when auth is enabled for cookie-ack, the chunk
> can not be set with auth, and it will definitely be dropped by peer.
>
> This issue is there since very beginning, and we fix it by using the
> old asoc instead.
>
> Signed-off-by: Xin Long <lucien....@gmail.com>
> ---
> net/sctp/sm_statefuns.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
> index 98acfed..28c070e 100644
> --- a/net/sctp/sm_statefuns.c
> +++ b/net/sctp/sm_statefuns.c
> @@ -2056,7 +2056,7 @@ static enum sctp_disposition sctp_sf_do_dupcook_d(
> }
> }
>
> - repl = sctp_make_cookie_ack(new_asoc, chunk);
> + repl = sctp_make_cookie_ack(asoc, chunk);
> if (!repl)
> goto nomem;
>
> --
> 2.1.0
>
> --
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>
Acked-by: Neil Horman <nhor...@tuxdriver.com>
