/**
* iscsi_iser_conn_stop() - stop iscsi-iser connection
* @cls_conn: iscsi class connection
* @flag: indicate if recover or terminate (passed as is)
*
* Notes: Calling iscsi_conn_stop might theoretically race with
* DEVICE_REMOVAL event and dereference a previously freed RDMA device
* handle, so we call it under iser the state lock to protect against
* this kind of race.
*/
static void
iscsi_iser_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
{
struct iscsi_conn *conn = cls_conn->dd_data;
struct iser_conn *iser_conn = conn->dd_data;
iser_info("stopping iscsi_conn: %p, iser_conn: %p\n", conn, iser_conn);
/*
* Userspace may have goofed up and not bound the connection or
* might have only partially setup the connection.
*/
if (iser_conn) {
mutex_lock(&iser_conn->state_mutex);
iser_conn_terminate(iser_conn);
iscsi_conn_stop(cls_conn, flag);
/* unbind */
iser_conn->iscsi_conn = NULL;
conn->dd_data = NULL;
complete(&iser_conn->stop_completion);
mutex_unlock(&iser_conn->state_mutex);
} else {
iscsi_conn_stop(cls_conn, flag);
}
}
static void
iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
{
struct iser_conn *ib_conn;
ib_conn = ep->dd_data;
if (ib_conn->iser_conn)
iscsi_suspend_tx(ib_conn->iser_conn->iscsi_conn);
iser_err("ib conn %p state %d\n",ib_conn, ib_conn->state);
iser_conn_terminate(ib_conn);
}
static void
iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
{
struct iser_conn *ib_conn;
ib_conn = ep->dd_data;
if (ib_conn->iscsi_conn)
/*
* Must suspend xmit path if the ep is bound to the
* iscsi_conn, so we know we are not accessing the ib_conn
* when we free it.
*
* This may not be bound if the ep poll failed.
*/
iscsi_suspend_tx(ib_conn->iscsi_conn);
iser_info("ib conn %p state %d\n", ib_conn, ib_conn->state);
iser_conn_terminate(ib_conn);
}
