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RDMA/i40iw: Fix for checking if the QP is destroyed 

Fix for checking if the QP associated with a completion
has been destroyed while processing CQ elements.
If that is the case, move the CQ head to the next element
and continue completion processing.

Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Tatyana Nikolova 2016-04-22 14:14:28 -05:00 committed by Doug Ledford
parent 6c2f76197d
commit f8a4e76c75
3 changed files with 8 additions and 0 deletions
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1
drivers/infiniband/hw/i40iw/i40iw_status.h
View File

@ -95,6 +95,7 @@ enum i40iw_status_code {
I40IW_ERR_INVALID_MAC_ADDR = -65,
I40IW_ERR_BAD_STAG = -66,
I40IW_ERR_CQ_COMPL_ERROR = -67,
I40IW_ERR_QUEUE_DESTROYED = -68
};
#endif

5
drivers/infiniband/hw/i40iw/i40iw_uk.c
View File

@ -802,6 +802,10 @@ static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq,
info->is_srq = (bool)RS_64(qword3, I40IWCQ_SRQ);
qp = (struct i40iw_qp_uk *)(unsigned long)comp_ctx;
if (!qp) {
ret_code = I40IW_ERR_QUEUE_DESTROYED;
goto exit;
}
wqe_idx = (u32)RS_64(qword3, I40IW_CQ_WQEIDX);
info->qp_handle = (i40iw_qp_handle)(unsigned long)qp;
@ -859,6 +863,7 @@ static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq,
ret_code = 0;
exit:
if (!ret_code &&
(info->comp_status == I40IW_COMPL_STATUS_FLUSHED))
if (pring && (I40IW_RING_MORE_WORK(*pring)))

2
drivers/infiniband/hw/i40iw/i40iw_verbs.c
View File

@ -2259,6 +2259,8 @@ static int i40iw_poll_cq(struct ib_cq *ibcq,
ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info, true);
if (ret == I40IW_ERR_QUEUE_EMPTY) {
break;
} else if (ret == I40IW_ERR_QUEUE_DESTROYED) {
continue;
} else if (ret) {
if (!cqe_count)
cqe_count = -1;