[SCTP]: Allow linger to abort 1-N style sockets.

Enable SO_LINGER functionality for 1-N style sockets. The socket API
draft will be clarfied to allow for this functionality. The linger
settings will apply to all associations on a given socket.
Signed-off-by: Vladislav Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>

net/sctp/socket.c

@@ -1242,14 +1242,14 @@ SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
 			if (sctp_state(asoc, CLOSED)) {
 				sctp_unhash_established(asoc);
 				sctp_association_free(asoc);
+				continue;
+			}
+		}
 
-			} else if (sock_flag(sk, SOCK_LINGER) &&
-				   !sk->sk_lingertime)
+		if (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime)
 			sctp_primitive_ABORT(asoc, NULL);
 		else
 			sctp_primitive_SHUTDOWN(asoc, NULL);
-		} else
-			sctp_primitive_SHUTDOWN(asoc, NULL);
 	}
 
 	/* Clean up any skbs sitting on the receive queue.  */