Merge branch 'nvme-4.10-fixes' of git://git.infradead.org/nvme into for-linus

Pull nvme target fixes from Sagi:

Given that its -rc6, I removed anything that is not
bug fix.

- nvmet-fc discard fix from Christoph
- queue disconnect fix from James
- nvmet-rdma dma sync fix from Parav
- Some more nvmet fixes

drivers/nvme/host/fc.c

···
 		return 0;
 
 	freq->sg_table.sgl = freq->first_sgl;
-	ret = sg_alloc_table_chained(&freq->sg_table, rq->nr_phys_segments,
-			freq->sg_table.sgl);
+	ret = sg_alloc_table_chained(&freq->sg_table,
+			blk_rq_nr_phys_segments(rq), freq->sg_table.sgl);
 	if (ret)
 		return -ENOMEM;
 
 	op->nents = blk_rq_map_sg(rq->q, rq, freq->sg_table.sgl);
-	WARN_ON(op->nents > rq->nr_phys_segments);
+	WARN_ON(op->nents > blk_rq_nr_phys_segments(rq));
 	dir = (rq_data_dir(rq) == WRITE) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
 	freq->sg_cnt = fc_dma_map_sg(ctrl->lport->dev, freq->sg_table.sgl,
 				op->nents, dir);

drivers/nvme/target/configfs.c

···
 {
 	struct nvmet_subsys *subsys = to_subsys(item);
 
+	nvmet_subsys_del_ctrls(subsys);
 	nvmet_subsys_put(subsys);
 }
 

drivers/nvme/target/core.c

···
 	pr_err("ctrl %d keep-alive timer (%d seconds) expired!\n",
 		ctrl->cntlid, ctrl->kato);
 
-	ctrl->ops->delete_ctrl(ctrl);
+	nvmet_ctrl_fatal_error(ctrl);
 }
 
 static void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl)
···
 	list_del(&ctrl->subsys_entry);
 	mutex_unlock(&subsys->lock);
 
+	flush_work(&ctrl->async_event_work);
+	cancel_work_sync(&ctrl->fatal_err_work);
+
 	ida_simple_remove(&subsys->cntlid_ida, ctrl->cntlid);
 	nvmet_subsys_put(subsys);
 
···
 	ida_destroy(&subsys->cntlid_ida);
 	kfree(subsys->subsysnqn);
 	kfree(subsys);
+}
+
+void nvmet_subsys_del_ctrls(struct nvmet_subsys *subsys)
+{
+	struct nvmet_ctrl *ctrl;
+
+	mutex_lock(&subsys->lock);
+	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)
+		ctrl->ops->delete_ctrl(ctrl);
+	mutex_unlock(&subsys->lock);
 }
 
 void nvmet_subsys_put(struct nvmet_subsys *subsys)

drivers/nvme/target/fc.c

···
 			(struct fcnvme_ls_disconnect_rqst *)iod->rqstbuf;
 	struct fcnvme_ls_disconnect_acc *acc =
 			(struct fcnvme_ls_disconnect_acc *)iod->rspbuf;
-	struct nvmet_fc_tgt_queue *queue;
+	struct nvmet_fc_tgt_queue *queue = NULL;
 	struct nvmet_fc_tgt_assoc *assoc;
 	int ret = 0;
 	bool del_assoc = false;
···
 		assoc = nvmet_fc_find_target_assoc(tgtport,
 				be64_to_cpu(rqst->associd.association_id));
 		iod->assoc = assoc;
-		if (!assoc)
+		if (assoc) {
+			if (rqst->discon_cmd.scope ==
+					FCNVME_DISCONN_CONNECTION) {
+				queue = nvmet_fc_find_target_queue(tgtport,
+						be64_to_cpu(
+							rqst->discon_cmd.id));
+				if (!queue) {
+					nvmet_fc_tgt_a_put(assoc);
+					ret = VERR_NO_CONN;
+				}
+			}
+		} else
 			ret = VERR_NO_ASSOC;
 	}
 
···
 			FCNVME_LS_DISCONNECT);
 
 
-	if (rqst->discon_cmd.scope == FCNVME_DISCONN_CONNECTION) {
-		queue = nvmet_fc_find_target_queue(tgtport,
-					be64_to_cpu(rqst->discon_cmd.id));
-		if (queue) {
-			int qid = queue->qid;
+	/* are we to delete a Connection ID (queue) */
+	if (queue) {
+		int qid = queue->qid;
 
-			nvmet_fc_delete_target_queue(queue);
+		nvmet_fc_delete_target_queue(queue);
 
-			/* release the get taken by find_target_queue */
-			nvmet_fc_tgt_q_put(queue);
+		/* release the get taken by find_target_queue */
+		nvmet_fc_tgt_q_put(queue);
 
-			/* tear association down if io queue terminated */
-			if (!qid)
-				del_assoc = true;
-		}
+		/* tear association down if io queue terminated */
+		if (!qid)
+			del_assoc = true;
 	}
 
 	/* release get taken in nvmet_fc_find_target_assoc */

drivers/nvme/target/nvmet.h

···
 struct nvmet_subsys *nvmet_subsys_alloc(const char *subsysnqn,
 		enum nvme_subsys_type type);
 void nvmet_subsys_put(struct nvmet_subsys *subsys);
+void nvmet_subsys_del_ctrls(struct nvmet_subsys *subsys);
 
 struct nvmet_ns *nvmet_find_namespace(struct nvmet_ctrl *ctrl, __le32 nsid);
 void nvmet_put_namespace(struct nvmet_ns *ns);

drivers/nvme/target/rdma.c

···
 {
 	struct ib_recv_wr *bad_wr;
 
+	ib_dma_sync_single_for_device(ndev->device,
+		cmd->sge[0].addr, cmd->sge[0].length,
+		DMA_FROM_DEVICE);
+
 	if (ndev->srq)
 		return ib_post_srq_recv(ndev->srq, &cmd->wr, &bad_wr);
 	return ib_post_recv(cmd->queue->cm_id->qp, &cmd->wr, &bad_wr);
···
 		first_wr = &rsp->send_wr;
 
 	nvmet_rdma_post_recv(rsp->queue->dev, rsp->cmd);
+
+	ib_dma_sync_single_for_device(rsp->queue->dev->device,
+		rsp->send_sge.addr, rsp->send_sge.length,
+		DMA_TO_DEVICE);
+
 	if (ib_post_send(cm_id->qp, first_wr, &bad_wr)) {
 		pr_err("sending cmd response failed\n");
 		nvmet_rdma_release_rsp(rsp);
···
 	cmd->queue = queue;
 	cmd->n_rdma = 0;
 	cmd->req.port = queue->port;
+
+
+	ib_dma_sync_single_for_cpu(queue->dev->device,
+		cmd->cmd->sge[0].addr, cmd->cmd->sge[0].length,
+		DMA_FROM_DEVICE);
+	ib_dma_sync_single_for_cpu(queue->dev->device,
+		cmd->send_sge.addr, cmd->send_sge.length,
+		DMA_TO_DEVICE);
 
 	if (!nvmet_req_init(&cmd->req, &queue->nvme_cq,
 			&queue->nvme_sq, &nvmet_rdma_ops))