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IB/hfi1: Unreserve a reserved request when it is completed

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Currently, When a reserved operation is completed, its entry in the send
queue will not be unreserved, which leads to the miscalculation of
qp->s_avail and thus the triggering of a WARN_ON call trace. This patch
fixes the problem by unreserving the reserved operation when it is
completed.

Fixes: 856cc4c237 ("IB/hfi1: Add the capability for reserved operations")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Kaike Wan 2018-11-28 10:22:09 -08:00 committed by Jason Gunthorpe
parent ff8b67fccd
commit ca95f802ef
1 changed files with 2 additions and 0 deletions
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2
drivers/infiniband/hw/hfi1/rc.c
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@ -1157,6 +1157,7 @@ void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah)
if (cmp_psn(wqe->lpsn, qp->s_sending_psn) >= 0 &&
cmp_psn(qp->s_sending_psn, qp->s_sending_hpsn) <= 0)
break;
rvt_qp_wqe_unreserve(qp, wqe);
s_last = qp->s_last;
trace_hfi1_qp_send_completion(qp, wqe, s_last);
if (++s_last >= qp->s_size)
@ -1209,6 +1210,7 @@ static struct rvt_swqe *do_rc_completion(struct rvt_qp *qp,
u32 s_last;
rvt_put_swqe(wqe);
rvt_qp_wqe_unreserve(qp, wqe);
s_last = qp->s_last;
trace_hfi1_qp_send_completion(qp, wqe, s_last);
if (++s_last >= qp->s_size)