diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index 94222de1d371..4ed8814efde6 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -796,7 +796,10 @@ fail: int bnxt_re_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata) { struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); + struct bnxt_qplib_qp *qplib_qp = &qp->qplib_qp; struct bnxt_re_dev *rdev = qp->rdev; + struct bnxt_qplib_nq *scq_nq = NULL; + struct bnxt_qplib_nq *rcq_nq = NULL; unsigned int flags; int rc; @@ -830,6 +833,15 @@ int bnxt_re_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata) ib_umem_release(qp->rumem); ib_umem_release(qp->sumem); + /* Flush all the entries of notification queue associated with + * given qp. + */ + scq_nq = qplib_qp->scq->nq; + rcq_nq = qplib_qp->rcq->nq; + bnxt_re_synchronize_nq(scq_nq); + if (scq_nq != rcq_nq) + bnxt_re_synchronize_nq(rcq_nq); + return 0; } diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c index 74d56900387a..1011293547ef 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c @@ -387,6 +387,24 @@ static void bnxt_qplib_service_nq(struct tasklet_struct *t) spin_unlock_bh(&hwq->lock); } +/* bnxt_re_synchronize_nq - self polling notification queue. + * @nq - notification queue pointer + * + * This function will start polling entries of a given notification queue + * for all pending entries. + * This function is useful to synchronize notification entries while resources + * are going away. + */ + +void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq) +{ + int budget = nq->budget; + + nq->budget = nq->hwq.max_elements; + bnxt_qplib_service_nq(&nq->nq_tasklet); + nq->budget = budget; +} + static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance) { struct bnxt_qplib_nq *nq = dev_instance; diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.h b/drivers/infiniband/hw/bnxt_re/qplib_fp.h index f859710f9a7f..49d89c080827 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h @@ -548,6 +548,7 @@ int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe, int num_cqes); void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp); +void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq); static inline void *bnxt_qplib_get_swqe(struct bnxt_qplib_q *que, u32 *swq_idx) {