Re: [PATCHv2 net-next] sctp: sctp should change socket state when shutdown is received

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On Tue, Jun 7, 2016 at 7:03 PM, Xin Long <lucien.xin@xxxxxxxxx> wrote:
> On Sat, Jun 4, 2016 at 8:22 PM, Marcelo Ricardo Leitner
>
> --- a/net/sctp/socket.c
> +++ b/net/sctp/socket.c
> @@ -7565,10 +7565,12 @@ static void sctp_sock_migrate(struct sock
> *oldsk, struct sock *newsk,
>         /* If the association on the newsk is already closed before accept()
>          * is called, set RCV_SHUTDOWN flag.
>          */
> -       if (sctp_state(assoc, CLOSED) && sctp_style(newsk, TCP))
> +       if (sctp_state(assoc, CLOSED) && sctp_style(newsk, TCP)) {
> +               newsk->sk_state = SCTP_SS_CLOSING;
>                 newsk->sk_shutdown |= RCV_SHUTDOWN;
> +       } else
> +               newsk->sk_state = SCTP_SS_ESTABLISHED;
>
> -       newsk->sk_state = SCTP_SS_ESTABLISHED;
>
I'm still thinking about this, if we want to get addrs info from
closed assoc, like Adam's requirement. this will make it more
impossible.

case in
sctp_getsockopt_peer_addrs()->sctp_id2assoc():

                if (!sctp_sstate(sk, ESTABLISHED))
                        return NULL;

we can't  get assoc as sstate is SS_CLOSING already.
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