/**
* llc_ui_release - shutdown socket
* @sock: Socket to release.
*
* Shutdown and deallocate an existing socket.
*/
static int llc_ui_release(struct socket *sock)
{
struct sock *sk = sock->sk;
struct llc_sock *llc;
if (!sk)
goto out;
sock_hold(sk);
lock_sock(sk);
llc = llc_sk(sk);
dprintk("%s: closing local(%02X) remote(%02X)\n", __FUNCTION__,
llc->laddr.lsap, llc->daddr.lsap);
if (!llc_send_disc(sk))
llc_ui_wait_for_disc(sk, sk->sk_rcvtimeo);
if (!sock_flag(sk, SOCK_ZAPPED))
llc_sap_remove_socket(llc->sap, sk);
release_sock(sk);
if (llc->sap && hlist_empty(&llc->sap->sk_list.list)) {
llc_release_sockets(llc->sap);
llc_sap_close(llc->sap);
}
if (llc->dev)
dev_put(llc->dev);
sock_put(sk);
llc_sk_free(sk);
out:
return 0;
}
/**
* llc_ui_shutdown - shutdown a connect llc2 socket.
* @sock: Socket to shutdown.
* @how: What part of the socket to shutdown.
*
* Shutdown a connected llc2 socket. Currently this function only supports
* shutting down both sends and receives (2), we could probably make this
* function such that a user can shutdown only half the connection but not
* right now.
* Returns: 0 upon success, negative otherwise.
*/
static int llc_ui_shutdown(struct socket *sock, int how)
{
struct sock *sk = sock->sk;
int rc = -ENOTCONN;
lock_sock(sk);
if (sk->sk_state != TCP_ESTABLISHED)
goto out;
rc = -EINVAL;
if (how != 2)
goto out;
rc = llc_send_disc(sk);
if (!rc)
rc = llc_ui_wait_for_disc(sk, sk->sk_rcvtimeo);
/* Wake up anyone sleeping in poll */
sk->sk_state_change(sk);
out:
release_sock(sk);
return rc;
}
/**
* llc_ui_release - shutdown socket
* @sock: Socket to release.
*
* Shutdown and deallocate an existing socket.
*/
static int llc_ui_release(struct socket *sock)
{
struct sock *sk = sock->sk;
struct llc_sock *llc;
if (unlikely(sk == NULL))
goto out;
sock_hold(sk);
lock_sock(sk);
llc = llc_sk(sk);
dprintk("%s: closing local(%02X) remote(%02X)\n", __func__,
llc->laddr.lsap, llc->daddr.lsap);
if (!llc_send_disc(sk))
llc_ui_wait_for_disc(sk, sk->sk_rcvtimeo);
if (!sock_flag(sk, SOCK_ZAPPED))
llc_sap_remove_socket(llc->sap, sk);
release_sock(sk);
if (llc->dev)
dev_put(llc->dev);
sock_put(sk);
llc_sk_free(sk);
out:
return 0;
}
