IB/ehca: SRQ fixes to enable IPoIB CM
Fix ehca SRQ support so that IPoIB connected mode works: - Report max_srq > 0 if SRQ is supported - Report "last wqe reached" asynchronous event when base QP dies; this is required by the IB spec and IPoIB CM relies on receiving it when cleaning up. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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@ -93,9 +93,13 @@ int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
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props->max_pd = min_t(int, rblock->max_pd, INT_MAX);
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props->max_ah = min_t(int, rblock->max_ah, INT_MAX);
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props->max_fmr = min_t(int, rblock->max_mr, INT_MAX);
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props->max_srq = 0;
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props->max_srq_wr = 0;
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props->max_srq_sge = 0;
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if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
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props->max_srq = props->max_qp;
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props->max_srq_wr = props->max_qp_wr;
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props->max_srq_sge = 3;
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}
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props->max_pkeys = 16;
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props->local_ca_ack_delay
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= rblock->local_ca_ack_delay;
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@ -175,10 +175,32 @@ error_data1:
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}
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static void dispatch_qp_event(struct ehca_shca *shca, struct ehca_qp *qp,
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enum ib_event_type event_type)
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{
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struct ib_event event;
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event.device = &shca->ib_device;
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event.event = event_type;
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if (qp->ext_type == EQPT_SRQ) {
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if (!qp->ib_srq.event_handler)
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return;
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event.element.srq = &qp->ib_srq;
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qp->ib_srq.event_handler(&event, qp->ib_srq.srq_context);
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} else {
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if (!qp->ib_qp.event_handler)
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return;
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event.element.qp = &qp->ib_qp;
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qp->ib_qp.event_handler(&event, qp->ib_qp.qp_context);
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}
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}
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static void qp_event_callback(struct ehca_shca *shca, u64 eqe,
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enum ib_event_type event_type, int fatal)
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{
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struct ib_event event;
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struct ehca_qp *qp;
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u32 token = EHCA_BMASK_GET(EQE_QP_TOKEN, eqe);
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@ -186,30 +208,22 @@ static void qp_event_callback(struct ehca_shca *shca, u64 eqe,
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qp = idr_find(&ehca_qp_idr, token);
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read_unlock(&ehca_qp_idr_lock);
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if (!qp)
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return;
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if (fatal)
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ehca_error_data(shca, qp, qp->ipz_qp_handle.handle);
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event.device = &shca->ib_device;
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dispatch_qp_event(shca, qp, fatal && qp->ext_type == EQPT_SRQ ?
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IB_EVENT_SRQ_ERR : event_type);
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if (qp->ext_type == EQPT_SRQ) {
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if (!qp->ib_srq.event_handler)
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return;
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event.event = fatal ? IB_EVENT_SRQ_ERR : event_type;
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event.element.srq = &qp->ib_srq;
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qp->ib_srq.event_handler(&event, qp->ib_srq.srq_context);
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} else {
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if (!qp->ib_qp.event_handler)
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return;
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event.event = event_type;
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event.element.qp = &qp->ib_qp;
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qp->ib_qp.event_handler(&event, qp->ib_qp.qp_context);
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}
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/*
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* eHCA only processes one WQE at a time for SRQ base QPs,
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* so the last WQE has been processed as soon as the QP enters
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* error state.
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*/
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if (fatal && qp->ext_type == EQPT_SRQBASE)
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dispatch_qp_event(shca, qp, IB_EVENT_QP_LAST_WQE_REACHED);
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return;
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}
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