RDMA/nes: Fix terminate connection

Fixes a crash that occurs during close when error async event is received.
Terminate message is not sent to the remote node if already processing close.

Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Faisal Latif <Faisal.Latif@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index be36cbe..43bebe8 100644 (file)
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -3553,9 +3553,9 @@ static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
 
        aeqe_cq_id = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]);
        if (aeq_info & NES_AEQE_QP) {
-               if ((!nes_is_resource_allocated(nesadapter, nesadapter->allocated_qps,
-                               aeqe_cq_id)) ||
-                               (atomic_read(&nesqp->close_timer_started)))
+               if (!nes_is_resource_allocated(nesadapter,
+                               nesadapter->allocated_qps,
+                               aeqe_cq_id))
                        return;
        }
 
@@ -3566,8 +3566,7 @@ static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
 
                        if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
                                if ((tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) &&
-                                       (nesqp->ibqp_state == IB_QPS_RTS) &&
-                                       ((nesadapter->eeprom_version >> 16) != NES_A0)) {
+                                       (nesqp->ibqp_state == IB_QPS_RTS)) {
                                        spin_lock_irqsave(&nesqp->lock, flags);
                                        nesqp->hw_iwarp_state = iwarp_state;
                                        nesqp->hw_tcp_state = tcp_state;
@@ -3594,9 +3593,10 @@ static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
                                return;
                        }
                        spin_lock_irqsave(&nesqp->lock, flags);
-                       nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
+                       nesqp->hw_iwarp_state = iwarp_state;
+                       nesqp->hw_tcp_state = tcp_state;
+                       nesqp->last_aeq = async_event_id;
                        spin_unlock_irqrestore(&nesqp->lock, flags);
-                       nes_hw_modify_qp(nesdev, nesqp, NES_CQP_QP_IWARP_STATE_CLOSING, 0, 0);
                        nes_cm_disconn(nesqp);
                        break;
 
@@ -3694,7 +3694,8 @@ static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
                case NES_AEQE_AEID_ROE_INVALID_RDMA_WRITE_OR_READ_RESP:
                        printk(KERN_ERR PFX "QP[%u] async_event_id=0x%04X IB_EVENT_QP_FATAL\n",
                                        nesqp->hwqp.qp_id, async_event_id);
-                       nes_terminate_connection(nesdev, nesqp, aeqe, IB_EVENT_QP_FATAL);
+                       if (!atomic_read(&nesqp->close_timer_started))
+                               nes_terminate_connection(nesdev, nesqp, aeqe, IB_EVENT_QP_FATAL);
                        break;
 
                case NES_AEQE_AEID_CQ_OPERATION_ERROR: