On Sat, Jul 30, 2016 at 02:14:41PM +0800, Xin Long wrote:
> Commit 141ddefce7c8 ("sctp: change sk state to CLOSED instead of
> CLOSING in sctp_sock_migrate") changed sk state to CLOSED if the
> assoc is closed when sctp_accept clones a new sk.
>
> If there is still data in sk receive queue, users will not be able
> to read it any more, as sctp_recvmsg returns directly if sk state
> is CLOSED.
>
> This patch is to add CLOSED state check in sctp_recvmsg to allow
> reading data from TCP-style sk with CLOSED state as what TCP does.
>
> Signed-off-by: Xin Long <[email protected]>
So scripts can track this later more easily,
Fixes: 141ddefce7c8 ("sctp: change sk state to CLOSED instead of CLOSING in
sctp_sock_migrate")
Acked-by: Marcelo Ricardo Leitner <[email protected]>
> ---
> net/sctp/socket.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/sctp/socket.c b/net/sctp/socket.c
> index 8812e1b..9fc417a 100644
> --- a/net/sctp/socket.c
> +++ b/net/sctp/socket.c
> @@ -2079,7 +2079,7 @@ static int sctp_recvmsg(struct sock *sk, struct msghdr
> *msg, size_t len,
> lock_sock(sk);
>
> if (sctp_style(sk, TCP) && !sctp_sstate(sk, ESTABLISHED) &&
> - !sctp_sstate(sk, CLOSING)) {
> + !sctp_sstate(sk, CLOSING) && !sctp_sstate(sk, CLOSED)) {
> err = -ENOTCONN;
> goto out;
> }
> --
> 2.1.0
>
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