+ /* The if-block below caches qp_attr to be modified for GSI and SMI
+ * qps during the initialization by ib_mad. When the respective port
+ * is activated, ie we got an event PORT_ACTIVE, we'll replay the
+ * cached modify calls sequence, see ehca_recover_sqs() below.
+ * Why that is required:
+ * 1) If one port is connected, older code requires that port one
+ * to be connected and module option nr_ports=1 to be given by
+ * user, which is very inconvenient for end user.
+ * 2) Firmware accepts modify_qp() only if respective port has become
+ * active. Older code had a wait loop of 30sec create_qp()/
+ * define_aqp1(), which is not appropriate in practice. This
+ * code now removes that wait loop, see define_aqp1(), and always
+ * reports all ports to ib_mad resp. users. Only activated ports
+ * will then usable for the users.
+ */
+ if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) {
+ int port = my_qp->init_attr.port_num;
+ struct ehca_sport *sport = &shca->sport[port - 1];
+ unsigned long flags;
+ spin_lock_irqsave(&sport->mod_sqp_lock, flags);
+ /* cache qp_attr only during init */
+ if (my_qp->mod_qp_parm) {
+ struct ehca_mod_qp_parm *p;
+ if (my_qp->mod_qp_parm_idx >= EHCA_MOD_QP_PARM_MAX) {
+ ehca_err(&shca->ib_device,
+ "mod_qp_parm overflow state=%x port=%x"
+ " type=%x", attr->qp_state,
+ my_qp->init_attr.port_num,
+ ibqp->qp_type);
+ spin_unlock_irqrestore(&sport->mod_sqp_lock,
+ flags);
+ return -EINVAL;
+ }
+ p = &my_qp->mod_qp_parm[my_qp->mod_qp_parm_idx];
+ p->mask = attr_mask;
+ p->attr = *attr;
+ my_qp->mod_qp_parm_idx++;
+ ehca_dbg(&shca->ib_device,
+ "Saved qp_attr for state=%x port=%x type=%x",
+ attr->qp_state, my_qp->init_attr.port_num,
+ ibqp->qp_type);
+ spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
+ return 0;
+ }
+ spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
+ }
+