Ejemplo n.º 1
0
static int rxe_init_av(struct rxe_dev *rxe, struct ib_ah_attr *attr,
		       struct rxe_av *av)
{
	int err;
	union ib_gid sgid;
	struct ib_gid_attr sgid_attr;

	err = ib_get_cached_gid(&rxe->ib_dev, attr->port_num,
				attr->grh.sgid_index, &sgid,
				&sgid_attr);
	if (err) {
		pr_err("Failed to query sgid. err = %d\n", err);
		return err;
	}

	err = rxe_av_from_attr(rxe, attr->port_num, av, attr);
	if (!err)
		err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid);

	if (sgid_attr.ndev)
		dev_put(sgid_attr.ndev);
	return err;
}
Ejemplo n.º 2
0
/* called by the modify qp verb */
int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
		     struct ib_udata *udata)
{
	int err;
	struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
	union ib_gid sgid;
	struct ib_gid_attr sgid_attr;

	if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
		int max_rd_atomic = __roundup_pow_of_two(attr->max_rd_atomic);

		qp->attr.max_rd_atomic = max_rd_atomic;
		atomic_set(&qp->req.rd_atomic, max_rd_atomic);
	}

	if (mask & IB_QP_MAX_DEST_RD_ATOMIC) {
		int max_dest_rd_atomic =
			__roundup_pow_of_two(attr->max_dest_rd_atomic);

		qp->attr.max_dest_rd_atomic = max_dest_rd_atomic;

		free_rd_atomic_resources(qp);

		err = alloc_rd_atomic_resources(qp, max_dest_rd_atomic);
		if (err)
			return err;
	}

	if (mask & IB_QP_CUR_STATE)
		qp->attr.cur_qp_state = attr->qp_state;

	if (mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
		qp->attr.en_sqd_async_notify = attr->en_sqd_async_notify;

	if (mask & IB_QP_ACCESS_FLAGS)
		qp->attr.qp_access_flags = attr->qp_access_flags;

	if (mask & IB_QP_PKEY_INDEX)
		qp->attr.pkey_index = attr->pkey_index;

	if (mask & IB_QP_PORT)
		qp->attr.port_num = attr->port_num;

	if (mask & IB_QP_QKEY)
		qp->attr.qkey = attr->qkey;

	if (mask & IB_QP_AV) {
		ib_get_cached_gid(&rxe->ib_dev, 1,
				  attr->ah_attr.grh.sgid_index, &sgid,
				  &sgid_attr);
		rxe_av_from_attr(rxe, attr->port_num, &qp->pri_av,
				 &attr->ah_attr);
		rxe_av_fill_ip_info(rxe, &qp->pri_av, &attr->ah_attr,
				    &sgid_attr, &sgid);
		if (sgid_attr.ndev)
			dev_put(sgid_attr.ndev);
	}

	if (mask & IB_QP_ALT_PATH) {
		ib_get_cached_gid(&rxe->ib_dev, 1,
				  attr->alt_ah_attr.grh.sgid_index, &sgid,
				  &sgid_attr);

		rxe_av_from_attr(rxe, attr->alt_port_num, &qp->alt_av,
				 &attr->alt_ah_attr);
		rxe_av_fill_ip_info(rxe, &qp->alt_av, &attr->alt_ah_attr,
				    &sgid_attr, &sgid);
		if (sgid_attr.ndev)
			dev_put(sgid_attr.ndev);

		qp->attr.alt_port_num = attr->alt_port_num;
		qp->attr.alt_pkey_index = attr->alt_pkey_index;
		qp->attr.alt_timeout = attr->alt_timeout;
	}

	if (mask & IB_QP_PATH_MTU) {
		qp->attr.path_mtu = attr->path_mtu;
		qp->mtu = ib_mtu_enum_to_int(attr->path_mtu);
	}

	if (mask & IB_QP_TIMEOUT) {
		qp->attr.timeout = attr->timeout;
		if (attr->timeout == 0) {
			qp->qp_timeout_jiffies = 0;
		} else {
			/* According to the spec, timeout = 4.096 * 2 ^ attr->timeout [us] */
			int j = nsecs_to_jiffies(4096ULL << attr->timeout);

			qp->qp_timeout_jiffies = j ? j : 1;
		}
	}

	if (mask & IB_QP_RETRY_CNT) {
		qp->attr.retry_cnt = attr->retry_cnt;
		qp->comp.retry_cnt = attr->retry_cnt;
		pr_debug("qp#%d set retry count = %d\n", qp_num(qp),
			 attr->retry_cnt);
	}

	if (mask & IB_QP_RNR_RETRY) {
		qp->attr.rnr_retry = attr->rnr_retry;
		qp->comp.rnr_retry = attr->rnr_retry;
		pr_debug("qp#%d set rnr retry count = %d\n", qp_num(qp),
			 attr->rnr_retry);
	}

	if (mask & IB_QP_RQ_PSN) {
		qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK);
		qp->resp.psn = qp->attr.rq_psn;
		pr_debug("qp#%d set resp psn = 0x%x\n", qp_num(qp),
			 qp->resp.psn);
	}

	if (mask & IB_QP_MIN_RNR_TIMER) {
		qp->attr.min_rnr_timer = attr->min_rnr_timer;
		pr_debug("qp#%d set min rnr timer = 0x%x\n", qp_num(qp),
			 attr->min_rnr_timer);
	}

	if (mask & IB_QP_SQ_PSN) {
		qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK);
		qp->req.psn = qp->attr.sq_psn;
		qp->comp.psn = qp->attr.sq_psn;
		pr_debug("qp#%d set req psn = 0x%x\n", qp_num(qp), qp->req.psn);
	}

	if (mask & IB_QP_PATH_MIG_STATE)
		qp->attr.path_mig_state = attr->path_mig_state;

	if (mask & IB_QP_DEST_QPN)
		qp->attr.dest_qp_num = attr->dest_qp_num;

	if (mask & IB_QP_STATE) {
		qp->attr.qp_state = attr->qp_state;

		switch (attr->qp_state) {
		case IB_QPS_RESET:
			pr_debug("qp#%d state -> RESET\n", qp_num(qp));
			rxe_qp_reset(qp);
			break;

		case IB_QPS_INIT:
			pr_debug("qp#%d state -> INIT\n", qp_num(qp));
			qp->req.state = QP_STATE_INIT;
			qp->resp.state = QP_STATE_INIT;
			break;

		case IB_QPS_RTR:
			pr_debug("qp#%d state -> RTR\n", qp_num(qp));
			qp->resp.state = QP_STATE_READY;
			break;

		case IB_QPS_RTS:
			pr_debug("qp#%d state -> RTS\n", qp_num(qp));
			qp->req.state = QP_STATE_READY;
			break;

		case IB_QPS_SQD:
			pr_debug("qp#%d state -> SQD\n", qp_num(qp));
			rxe_qp_drain(qp);
			break;

		case IB_QPS_SQE:
			pr_warn("qp#%d state -> SQE !!?\n", qp_num(qp));
			/* Not possible from modify_qp. */
			break;

		case IB_QPS_ERR:
			pr_debug("qp#%d state -> ERR\n", qp_num(qp));
			rxe_qp_error(qp);
			break;
		}
	}

	return 0;
}