i40iw: Release cm_id ref on PCI function reset

On PCI function reset, cm_id reference is not released
which causes an application hang, as it waits on the
cm_id to be released on rdma_destroy.

To fix this, call i40iw_cm_disconn during a PCI function
reset to clean-up resources and release cm_id reference.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index 6ae98aa7f74ebb14f4ce2e9e3cee7c629270253f..5a2fa743676caa3aded77b9a5be3670928454caf 100644 (file)
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -3487,7 +3487,8 @@ static void i40iw_cm_disconn_true(struct i40iw_qp *iwqp)
        if (((original_hw_tcp_state == I40IW_TCP_STATE_CLOSED) ||
             (original_hw_tcp_state == I40IW_TCP_STATE_TIME_WAIT) ||
             (last_ae == I40IW_AE_RDMAP_ROE_BAD_LLP_CLOSE) ||
-            (last_ae == I40IW_AE_LLP_CONNECTION_RESET))) {
+            (last_ae == I40IW_AE_LLP_CONNECTION_RESET) ||
+             iwdev->reset)) {
                issue_close = 1;
                iwqp->cm_id = NULL;
                if (!iwqp->flush_issued) {
@@ -4265,6 +4266,8 @@ void i40iw_cm_disconnect_all(struct i40iw_device *iwdev)
                cm_node = container_of(list_node, struct i40iw_cm_node, connected_entry);
                attr.qp_state = IB_QPS_ERR;
                i40iw_modify_qp(&cm_node->iwqp->ibqp, &attr, IB_QP_STATE, NULL);
+               if (iwdev->reset)
+                       i40iw_cm_disconn(cm_node->iwqp);
                i40iw_rem_ref_cm_node(cm_node);
        }
 }