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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>
This commit is contained in:
Faisal Latif 2011-09-25 20:27:52 -05:00 committed by Roland Dreier
parent e2e435f290
commit bab3a9f43f
1 changed files with 9 additions and 8 deletions
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17
drivers/infiniband/hw/nes/nes_hw.c
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@ -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: