1 files changed, 76 insertions, 29 deletions

diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
index 7825765c936c..7792e00800ae 100644
--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -318,11 +318,18 @@ static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 	 */
 	if (resp == fc_lport_flogi_resp) {
 		qedf->flogi_cnt++;
+		qedf->flogi_pending++;
+
+		if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
+			QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n");
+			qedf->flogi_pending = 0;
+		}
+
 		if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
 			schedule_delayed_work(&qedf->stag_work, 2);
 			return NULL;
 		}
-		qedf->flogi_pending++;
+
 		return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 		    arg, timeout);
 	}
@@ -692,7 +699,7 @@ static u32 qedf_get_login_failures(void *cookie)
 }
 
 static struct qed_fcoe_cb_ops qedf_cb_ops = {
-	{
+	.common = {
 		.link_update = qedf_link_update,
 		.bw_update = qedf_bw_update,
 		.schedule_recovery_handler = qedf_schedule_recovery_handler,
@@ -774,7 +781,7 @@ static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 		goto drop_rdata_kref;
 	}
 
-	rc = fc_block_scsi_eh(sc_cmd);
+	rc = fc_block_rport(rport);
 	if (rc)
 		goto drop_rdata_kref;
 
@@ -858,18 +865,19 @@ out:
 
 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 {
-	QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
-		 sc_cmd->device->host->host_no, sc_cmd->device->id,
-		 sc_cmd->device->lun);
-	return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
+	struct scsi_target *starget = scsi_target(sc_cmd->device);
+	struct fc_rport *rport = starget_to_rport(starget);
+
+	QEDF_ERR(NULL, "TARGET RESET Issued...");
+	return qedf_initiate_tmf(rport, 0, FCP_TMF_TGT_RESET);
 }
 
 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 {
-	QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
-		 sc_cmd->device->host->host_no, sc_cmd->device->id,
-		 sc_cmd->device->lun);
-	return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
+	struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
+
+	QEDF_ERR(NULL, "LUN RESET Issued...\n");
+	return qedf_initiate_tmf(rport, sc_cmd->device->lun, FCP_TMF_LUN_RESET);
 }
 
 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
@@ -911,13 +919,14 @@ void qedf_ctx_soft_reset(struct fc_lport *lport)
 	struct qedf_ctx *qedf;
 	struct qed_link_output if_link;
 
+	qedf = lport_priv(lport);
+
 	if (lport->vport) {
+		clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 		printk_ratelimited("Cannot issue host reset on NPIV port.\n");
 		return;
 	}
 
-	qedf = lport_priv(lport);
-
 	qedf->flogi_pending = 0;
 	/* For host reset, essentially do a soft link up/down */
 	atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
@@ -937,6 +946,7 @@ void qedf_ctx_soft_reset(struct fc_lport *lport)
 	if (!if_link.link_up) {
 		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 			  "Physical link is not up.\n");
+		clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 		return;
 	}
 	/* Flush and wait to make sure link down is processed */
@@ -949,6 +959,7 @@ void qedf_ctx_soft_reset(struct fc_lport *lport)
 		  "Queue link up work.\n");
 	queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 	    0);
+	clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 }
 
 /* Reset the host by gracefully logging out and then logging back in */
@@ -971,7 +982,8 @@ static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 	return SUCCESS;
 }
 
-static int qedf_slave_configure(struct scsi_device *sdev)
+static int qedf_sdev_configure(struct scsi_device *sdev,
+			       struct queue_limits *lim)
 {
 	if (qedf_queue_depth) {
 		scsi_change_queue_depth(sdev, qedf_queue_depth);
@@ -992,7 +1004,7 @@ static const struct scsi_host_template qedf_host_template = {
 	.eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
 	.eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
 	.eh_host_reset_handler  = qedf_eh_host_reset,
-	.slave_configure	= qedf_slave_configure,
+	.sdev_configure	= qedf_sdev_configure,
 	.dma_boundary = QED_HW_DMA_BOUNDARY,
 	.sg_tablesize = QEDF_MAX_BDS_PER_CMD,
 	.can_queue = FCOE_PARAMS_NUM_TASKS,
@@ -2275,7 +2287,7 @@ static bool qedf_process_completions(struct qedf_fastpath *fp)
 		 * on.
 		 */
 		if (!io_req)
-			/* If there is not io_req assocated with this CQE
+			/* If there is not io_req associated with this CQE
 			 * just queue it on CPU 0
 			 */
 			cpu = 0;
@@ -2727,6 +2739,7 @@ static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
 	    sb_id, QED_SB_TYPE_STORAGE);
 
 	if (ret) {
+		dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_virt), sb_virt, sb_phys);
 		QEDF_ERR(&qedf->dbg_ctx,
 			 "Status block initialization failed (0x%x) for id = %d.\n",
 			 ret, sb_id);
@@ -2805,6 +2818,8 @@ void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
 	struct qedf_ioreq *io_req;
 	struct qedf_rport *fcport;
 	u32 comp_type;
+	u8 io_comp_type;
+	unsigned long flags;
 
 	comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
 	    FCOE_CQE_CQE_TYPE_MASK;
@@ -2838,11 +2853,14 @@ void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
 		return;
 	}
 
+	spin_lock_irqsave(&fcport->rport_lock, flags);
+	io_comp_type = io_req->cmd_type;
+	spin_unlock_irqrestore(&fcport->rport_lock, flags);
 
 	switch (comp_type) {
 	case FCOE_GOOD_COMPLETION_CQE_TYPE:
 		atomic_inc(&fcport->free_sqes);
-		switch (io_req->cmd_type) {
+		switch (io_comp_type) {
 		case QEDF_SCSI_CMD:
 			qedf_scsi_completion(qedf, cqe, io_req);
 			break;
@@ -3356,9 +3374,9 @@ retry_probe:
 	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
 	    qedf->io_mempool);
 
-	sprintf(host_buf, "qedf_%u_link",
-	    qedf->lport->host->host_no);
-	qedf->link_update_wq = create_workqueue(host_buf);
+	qedf->link_update_wq = alloc_workqueue("qedf_%u_link",
+					       WQ_MEM_RECLAIM | WQ_PERCPU,
+					       1, qedf->lport->host->host_no);
 	INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
 	INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
 	INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
@@ -3457,12 +3475,13 @@ retry_probe:
 	}
 
 	/* Start the Slowpath-process */
+	memset(&slowpath_params, 0, sizeof(struct qed_slowpath_params));
 	slowpath_params.int_mode = QED_INT_MODE_MSIX;
 	slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
 	slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
 	slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
 	slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
-	strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
+	strscpy(slowpath_params.name, "qedf", sizeof(slowpath_params.name));
 	rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
 	if (rc) {
 		QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
@@ -3567,9 +3586,9 @@ retry_probe:
 	ether_addr_copy(params.ll2_mac_address, qedf->mac);
 
 	/* Start LL2 processing thread */
-	snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
-	qedf->ll2_recv_wq =
-		create_workqueue(host_buf);
+	qedf->ll2_recv_wq = alloc_workqueue("qedf_%d_ll2",
+					    WQ_MEM_RECLAIM | WQ_PERCPU, 1,
+					    host->host_no);
 	if (!qedf->ll2_recv_wq) {
 		QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
 		rc = -ENOMEM;
@@ -3610,9 +3629,9 @@ retry_probe:
 		}
 	}
 
-	sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
-	qedf->timer_work_queue =
-		create_workqueue(host_buf);
+	qedf->timer_work_queue = alloc_workqueue("qedf_%u_timer",
+				WQ_MEM_RECLAIM | WQ_PERCPU, 1,
+				qedf->lport->host->host_no);
 	if (!qedf->timer_work_queue) {
 		QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
 			  "workqueue.\n");
@@ -3624,7 +3643,9 @@ retry_probe:
 	if (mode != QEDF_MODE_RECOVERY) {
 		sprintf(host_buf, "qedf_%u_dpc",
 		    qedf->lport->host->host_no);
-		qedf->dpc_wq = create_workqueue(host_buf);
+		qedf->dpc_wq =
+			alloc_workqueue("%s", WQ_MEM_RECLAIM | WQ_PERCPU, 1,
+					host_buf);
 	}
 	INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
 
@@ -3715,6 +3736,7 @@ static void __qedf_remove(struct pci_dev *pdev, int mode)
 {
 	struct qedf_ctx *qedf;
 	int rc;
+	int cnt = 0;
 
 	if (!pdev) {
 		QEDF_ERR(NULL, "pdev is NULL.\n");
@@ -3732,6 +3754,17 @@ static void __qedf_remove(struct pci_dev *pdev, int mode)
 		return;
 	}
 
+stag_in_prog:
+	if (test_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags)) {
+		QEDF_ERR(&qedf->dbg_ctx, "Stag in progress, cnt=%d.\n", cnt);
+		cnt++;
+
+		if (cnt < 5) {
+			msleep(500);
+			goto stag_in_prog;
+		}
+	}
+
 	if (mode != QEDF_MODE_RECOVERY)
 		set_bit(QEDF_UNLOADING, &qedf->flags);
 
@@ -3991,6 +4024,19 @@ void qedf_stag_change_work(struct work_struct *work)
 	struct qedf_ctx *qedf =
 	    container_of(work, struct qedf_ctx, stag_work.work);
 
+	if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
+		QEDF_ERR(&qedf->dbg_ctx,
+			 "Already is in recovery, hence not calling software context reset.\n");
+		return;
+	}
+
+	if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
+		QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n");
+		return;
+	}
+
+	set_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
+
 	printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
 			dev_name(&qedf->pdev->dev), __func__, __LINE__,
 			qedf->dbg_ctx.host_no);
@@ -4135,7 +4181,8 @@ static int __init qedf_init(void)
 		goto err3;
 	}
 
-	qedf_io_wq = create_workqueue("qedf_io_wq");
+	qedf_io_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM | WQ_PERCPU, 1,
+				     "qedf_io_wq");
 	if (!qedf_io_wq) {
 		QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
 		goto err4;