RDMA/nes: Fix hangs on ifdown

When ib_unregister_device() is called from netdev stop during ifdown,
it sometimes hangs. Changes made to indicate port_err to ib_dispatch_event()
during netdev stop and port_active during netdev open. The
ib_unregister_device() is only called during remove of the module.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 9bc2d744b2e..3b95d0473b7 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -3058,6 +3058,7 @@ int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
                                                 nesqp->hte_added = 0;
                                         }
                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
+                                                (nesdev->iw_status) &&
                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
                                         next_iwarp_state |= NES_CQP_QP_RESET;
                                 } else {
@@ -3936,6 +3937,17 @@ struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
         return nesibdev;
 }
 
+void  nes_port_ibevent(struct nes_vnic *nesvnic)
+{
+        struct nes_ib_device *nesibdev = nesvnic->nesibdev;
+        struct nes_device *nesdev = nesvnic->nesdev;
+        struct ib_event event;
+        event.device = &nesibdev->ibdev;
+        event.element.port_num = nesvnic->logical_port + 1;
+        event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
+        ib_dispatch_event(&event);
+}
+
 
 /**
  * nes_destroy_ofa_device