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IB/rdmavt: Post receive for QP in ERR state

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Accordingly IB Spec post WR to receive queue must
complete with error if QP is in Error state.
Please refer to C10-42, C10-97.2.1

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Alex Estrin <alex.estrin@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Alex Estrin 2016-03-07 11:35:51 -08:00 committed by Doug Ledford
parent d0e859c328
commit 000a830efd
1 changed files with 23 additions and 8 deletions
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31
drivers/infiniband/sw/rdmavt/qp.c
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@ -1364,6 +1364,8 @@ int rvt_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
struct rvt_rwq *wq = qp->r_rq.wq;
unsigned long flags;
int qp_err_flush = (ib_rvt_state_ops[qp->state] & RVT_FLUSH_RECV) &&
!qp->ibqp.srq;
/* Check that state is OK to post receive. */
if (!(ib_rvt_state_ops[qp->state] & RVT_POST_RECV_OK) || !wq) {
@ -1390,15 +1392,28 @@ int rvt_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
*bad_wr = wr;
return -ENOMEM;
}
if (unlikely(qp_err_flush)) {
struct ib_wc wc;
wqe = rvt_get_rwqe_ptr(&qp->r_rq, wq->head);
wqe->wr_id = wr->wr_id;
wqe->num_sge = wr->num_sge;
for (i = 0; i < wr->num_sge; i++)
wqe->sg_list[i] = wr->sg_list[i];
/* Make sure queue entry is written before the head index. */
smp_wmb();
wq->head = next;
memset(&wc, 0, sizeof(wc));
wc.qp = &qp->ibqp;
wc.opcode = IB_WC_RECV;
wc.wr_id = wr->wr_id;
wc.status = IB_WC_WR_FLUSH_ERR;
rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, 1);
} else {
wqe = rvt_get_rwqe_ptr(&qp->r_rq, wq->head);
wqe->wr_id = wr->wr_id;
wqe->num_sge = wr->num_sge;
for (i = 0; i < wr->num_sge; i++)
wqe->sg_list[i] = wr->sg_list[i];
/*
* Make sure queue entry is written
* before the head index.
*/
smp_wmb();
wq->head = next;
}
spin_unlock_irqrestore(&qp->r_rq.lock, flags);
}
return 0;