Commit e82e6ff7 authored by Saurav Kashyap's avatar Saurav Kashyap Committed by Martin K. Petersen
Browse files

scsi: qedf: Print message during bailout conditions 



Print messages during exiting condition to help debugging.

Signed-off-by: default avatarSaurav Kashyap <skashyap@marvell.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 391a2417

drivers/scsi/qedf/qedf_debugfs.c

+8 −8
Original line number Diff line number Diff line
@@ -47,13 +47,13 @@ qedf_dbg_host_init(struct qedf_dbg_ctx *qedf, 
 * @pf: the pf that is stopping

 **/

void

qedf_dbg_host_exit(struct qedf_dbg_ctx *qedf)

qedf_dbg_host_exit(struct qedf_dbg_ctx *qedf_dbg)

{

	QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Destroying debugfs host "

	QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "Destroying debugfs host "

		   "entry\n");

	/* remove debugfs  entries of this PF */

	debugfs_remove_recursive(qedf->bdf_dentry);

	qedf->bdf_dentry = NULL;

	debugfs_remove_recursive(qedf_dbg->bdf_dentry);

	qedf_dbg->bdf_dentry = NULL;

}



/**
@@ -140,10 +140,10 @@ qedf_dbg_debug_cmd_read(struct file *filp, char __user *buffer, size_t count, 
			loff_t *ppos)

{

	int cnt;

	struct qedf_dbg_ctx *qedf =

	struct qedf_dbg_ctx *qedf_dbg =

				(struct qedf_dbg_ctx *)filp->private_data;



	QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "entered\n");

	QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "debug mask=0x%x\n", qedf_debug);

	cnt = sprintf(buffer, "debug mask = 0x%x\n", qedf_debug);



	cnt = min_t(int, count, cnt - *ppos);
@@ -158,7 +158,7 @@ qedf_dbg_debug_cmd_write(struct file *filp, const char __user *buffer, 
	uint32_t val;

	void *kern_buf;

	int rval;

	struct qedf_dbg_ctx *qedf =

	struct qedf_dbg_ctx *qedf_dbg =

	    (struct qedf_dbg_ctx *)filp->private_data;



	if (!count || *ppos)
@@ -178,7 +178,7 @@ qedf_dbg_debug_cmd_write(struct file *filp, const char __user *buffer, 
	else

		qedf_debug = val;



	QEDF_INFO(qedf, QEDF_LOG_DEBUGFS, "Setting debug=0x%x.\n", val);

	QEDF_INFO(qedf_dbg, QEDF_LOG_DEBUGFS, "Setting debug=0x%x.\n", val);

	return count;

}

drivers/scsi/qedf/qedf_els.c

+30 −8
Original line number Diff line number Diff line
@@ -179,8 +179,11 @@ static void qedf_rrq_compl(struct qedf_els_cb_arg *cb_arg) 


	orig_io_req = cb_arg->aborted_io_req;



	if (!orig_io_req)

	if (!orig_io_req) {

		QEDF_ERR(&qedf->dbg_ctx,

			 "Original io_req is NULL, rrq_req = %p.\n", rrq_req);

		goto out_free;

	}



	if (rrq_req->event != QEDF_IOREQ_EV_ELS_TMO &&

	    rrq_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
@@ -350,8 +353,10 @@ void qedf_restart_rport(struct qedf_rport *fcport) 
	u32 port_id;

	unsigned long flags;



	if (!fcport)

	if (!fcport) {

		QEDF_ERR(NULL, "fcport is NULL.\n");

		return;

	}



	spin_lock_irqsave(&fcport->rport_lock, flags);

	if (test_bit(QEDF_RPORT_IN_RESET, &fcport->flags) ||
@@ -418,8 +423,11 @@ static void qedf_l2_els_compl(struct qedf_els_cb_arg *cb_arg) 
	 * If we are flushing the command just free the cb_arg as none of the

	 * response data will be valid.

	 */

	if (els_req->event == QEDF_IOREQ_EV_ELS_FLUSH)

	if (els_req->event == QEDF_IOREQ_EV_ELS_FLUSH) {

		QEDF_ERR(NULL, "els_req xid=0x%x event is flush.\n",

			 els_req->xid);

		goto free_arg;

	}



	fcport = els_req->fcport;

	mp_req = &(els_req->mp_req);
@@ -532,8 +540,10 @@ static void qedf_srr_compl(struct qedf_els_cb_arg *cb_arg) 


	orig_io_req = cb_arg->aborted_io_req;



	if (!orig_io_req)

	if (!orig_io_req) {

		QEDF_ERR(NULL, "orig_io_req is NULL.\n");

		goto out_free;

	}



	clear_bit(QEDF_CMD_SRR_SENT, &orig_io_req->flags);
@@ -547,8 +557,11 @@ static void qedf_srr_compl(struct qedf_els_cb_arg *cb_arg) 
		   orig_io_req, orig_io_req->xid, srr_req->xid, refcount);



	/* If a SRR times out, simply free resources */

	if (srr_req->event == QEDF_IOREQ_EV_ELS_TMO)

	if (srr_req->event == QEDF_IOREQ_EV_ELS_TMO) {

		QEDF_ERR(&qedf->dbg_ctx,

			 "ELS timeout rec_xid=0x%x.\n", srr_req->xid);

		goto out_put;

	}



	/* Normalize response data into struct fc_frame */

	mp_req = &(srr_req->mp_req);
@@ -721,8 +734,11 @@ void qedf_process_seq_cleanup_compl(struct qedf_ctx *qedf, 
	cb_arg = io_req->cb_arg;



	/* If we timed out just free resources */

	if (io_req->event == QEDF_IOREQ_EV_ELS_TMO || !cqe)

	if (io_req->event == QEDF_IOREQ_EV_ELS_TMO || !cqe) {

		QEDF_ERR(&qedf->dbg_ctx,

			 "cqe is NULL or timeout event (0x%x)", io_req->event);

		goto free;

	}



	/* Kill the timer we put on the request */

	cancel_delayed_work_sync(&io_req->timeout_work);
@@ -825,8 +841,10 @@ static void qedf_rec_compl(struct qedf_els_cb_arg *cb_arg) 


	orig_io_req = cb_arg->aborted_io_req;



	if (!orig_io_req)

	if (!orig_io_req) {

		QEDF_ERR(NULL, "orig_io_req is NULL.\n");

		goto out_free;

	}



	if (rec_req->event != QEDF_IOREQ_EV_ELS_TMO &&

	    rec_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
@@ -838,8 +856,12 @@ static void qedf_rec_compl(struct qedf_els_cb_arg *cb_arg) 
		   orig_io_req, orig_io_req->xid, rec_req->xid, refcount);



	/* If a REC times out, free resources */

	if (rec_req->event == QEDF_IOREQ_EV_ELS_TMO)

	if (rec_req->event == QEDF_IOREQ_EV_ELS_TMO) {

		QEDF_ERR(&qedf->dbg_ctx,

			 "Got TMO event, orig_io_req %p orig_io_xid=0x%x.\n",

			 orig_io_req, orig_io_req->xid);

		goto out_put;

	}



	/* Normalize response data into struct fc_frame */

	mp_req = &(rec_req->mp_req);

drivers/scsi/qedf/qedf_fip.c

+4 −1
Original line number Diff line number Diff line
@@ -23,8 +23,11 @@ void qedf_fcoe_send_vlan_req(struct qedf_ctx *qedf) 
	int rc = -1;



	skb = dev_alloc_skb(sizeof(struct fip_vlan));

	if (!skb)

	if (!skb) {

		QEDF_ERR(&qedf->dbg_ctx,

			 "Failed to allocate skb.\n");

		return;

	}



	eth_fr = (char *)skb->data;

	vlan = (struct fip_vlan *)eth_fr;

drivers/scsi/qedf/qedf_io.c

+49 −9
Original line number Diff line number Diff line
@@ -104,6 +104,8 @@ static void qedf_cmd_timeout(struct work_struct *work) 
		qedf_process_seq_cleanup_compl(qedf, NULL, io_req);

		break;

	default:

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,

			  "Hit default case, xid=0x%x.\n", io_req->xid);

		break;

	}

}
@@ -122,8 +124,10 @@ void qedf_cmd_mgr_free(struct qedf_cmd_mgr *cmgr) 
	num_ios = max_xid - min_xid + 1;



	/* Free fcoe_bdt_ctx structures */

	if (!cmgr->io_bdt_pool)

	if (!cmgr->io_bdt_pool) {

		QEDF_ERR(&qedf->dbg_ctx, "io_bdt_pool is NULL.\n");

		goto free_cmd_pool;

	}



	bd_tbl_sz = QEDF_MAX_BDS_PER_CMD * sizeof(struct scsi_sge);

	for (i = 0; i < num_ios; i++) {
@@ -226,8 +230,11 @@ struct qedf_cmd_mgr *qedf_cmd_mgr_alloc(struct qedf_ctx *qedf) 
		io_req->sense_buffer = dma_alloc_coherent(&qedf->pdev->dev,

		    QEDF_SCSI_SENSE_BUFFERSIZE, &io_req->sense_buffer_dma,

		    GFP_KERNEL);

		if (!io_req->sense_buffer)

		if (!io_req->sense_buffer) {

			QEDF_ERR(&qedf->dbg_ctx,

				 "Failed to alloc sense buffer.\n");

			goto mem_err;

		}



		/* Allocate task parameters to pass to f/w init funcions */

		io_req->task_params = kzalloc(sizeof(*io_req->task_params),
@@ -437,8 +444,12 @@ void qedf_release_cmd(struct kref *ref) 
	struct qedf_rport *fcport = io_req->fcport;

	unsigned long flags;



	if (io_req->cmd_type == QEDF_SCSI_CMD)

	if (io_req->cmd_type == QEDF_SCSI_CMD) {

		QEDF_WARN(&fcport->qedf->dbg_ctx,

			  "Cmd released called without scsi_done called, io_req %p xid=0x%x.\n",

			  io_req, io_req->xid);

		WARN_ON(io_req->sc_cmd);

	}



	if (io_req->cmd_type == QEDF_ELS ||

	    io_req->cmd_type == QEDF_TASK_MGMT_CMD)
@@ -447,8 +458,10 @@ void qedf_release_cmd(struct kref *ref) 
	atomic_inc(&cmd_mgr->free_list_cnt);

	atomic_dec(&fcport->num_active_ios);

	atomic_set(&io_req->state, QEDF_CMD_ST_INACTIVE);

	if (atomic_read(&fcport->num_active_ios) < 0)

	if (atomic_read(&fcport->num_active_ios) < 0) {

		QEDF_WARN(&(fcport->qedf->dbg_ctx), "active_ios < 0.\n");

		WARN_ON(1);

	}



	/* Increment task retry identifier now that the request is released */

	io_req->task_retry_identifier++;
@@ -951,6 +964,9 @@ qedf_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd) 


	if (test_bit(QEDF_UNLOADING, &qedf->flags) ||

	    test_bit(QEDF_DBG_STOP_IO, &qedf->flags)) {

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,

			  "Returning DNC as unloading or stop io, flags 0x%lx.\n",

			  qedf->flags);

		sc_cmd->result = DID_NO_CONNECT << 16;

		sc_cmd->scsi_done(sc_cmd);

		return 0;
@@ -967,6 +983,9 @@ qedf_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd) 


	rval = fc_remote_port_chkready(rport);

	if (rval) {

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,

			  "fc_remote_port_chkready failed=0x%x for port_id=0x%06x.\n",

			  rval, rport->port_id);

		sc_cmd->result = rval;

		sc_cmd->scsi_done(sc_cmd);

		return 0;
@@ -974,12 +993,14 @@ qedf_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd) 


	/* Retry command if we are doing a qed drain operation */

	if (test_bit(QEDF_DRAIN_ACTIVE, &qedf->flags)) {

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, "Drain active.\n");

		rc = SCSI_MLQUEUE_HOST_BUSY;

		goto exit_qcmd;

	}



	if (lport->state != LPORT_ST_READY ||

	    atomic_read(&qedf->link_state) != QEDF_LINK_UP) {

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, "Link down.\n");

		rc = SCSI_MLQUEUE_HOST_BUSY;

		goto exit_qcmd;

	}
@@ -1297,8 +1318,10 @@ void qedf_scsi_done(struct qedf_ctx *qedf, struct qedf_ioreq *io_req, 
	struct scsi_cmnd *sc_cmd;

	int refcount;



	if (!io_req)

	if (!io_req) {

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, "io_req is NULL\n");

		return;

	}



	if (test_and_set_bit(QEDF_CMD_ERR_SCSI_DONE, &io_req->flags)) {

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
@@ -1414,8 +1437,12 @@ void qedf_process_warning_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe, 
	u64 err_warn_bit_map;

	u8 err_warn = 0xff;



	if (!cqe)

	if (!cqe) {

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,

			  "cqe is NULL for io_req %p xid=0x%x\n",

			  io_req, io_req->xid);

		return;

	}



	QEDF_ERR(&(io_req->fcport->qedf->dbg_ctx), "Warning CQE, "

		  "xid=0x%x\n", io_req->xid);
@@ -1477,8 +1504,11 @@ void qedf_process_error_detect(struct qedf_ctx *qedf, struct fcoe_cqe *cqe, 
{

	int rval;



	if (!cqe)

	if (!cqe) {

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,

			  "cqe is NULL for io_req %p\n", io_req);

		return;

	}



	QEDF_ERR(&(io_req->fcport->qedf->dbg_ctx), "Error detection CQE, "

		  "xid=0x%x\n", io_req->xid);
@@ -1543,8 +1573,10 @@ void qedf_flush_active_ios(struct qedf_rport *fcport, int lun) 
	int wait_cnt = 100;

	int refcount = 0;



	if (!fcport)

	if (!fcport) {

		QEDF_ERR(NULL, "fcport is NULL\n");

		return;

	}



	/* Check that fcport is still offloaded */

	if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
@@ -1976,6 +2008,10 @@ void qedf_process_abts_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe, 
	clear_bit(QEDF_CMD_IN_ABORT, &io_req->flags);



	if (io_req->sc_cmd) {

		if (!io_req->return_scsi_cmd_on_abts)

			QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_SCSI_TM,

				  "Not call scsi_done for xid=0x%x.\n",

				  io_req->xid);

		if (io_req->return_scsi_cmd_on_abts)

			qedf_scsi_done(qedf, io_req, DID_ERROR);

	}
@@ -2201,6 +2237,10 @@ int qedf_initiate_cleanup(struct qedf_ioreq *io_req, 
	}



	if (io_req->sc_cmd) {

		if (!io_req->return_scsi_cmd_on_abts)

			QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_SCSI_TM,

				  "Not call scsi_done for xid=0x%x.\n",

				  io_req->xid);

		if (io_req->return_scsi_cmd_on_abts)

			qedf_scsi_done(qedf, io_req, DID_ERROR);

	}
@@ -2241,7 +2281,7 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd, 
	u16 sqe_idx;



	if (!sc_cmd) {

		QEDF_ERR(&(qedf->dbg_ctx), "invalid arg\n");

		QEDF_ERR(&qedf->dbg_ctx, "sc_cmd is NULL\n");

		return FAILED;

	}

drivers/scsi/qedf/qedf_main.c

+39 −14
Original line number Diff line number Diff line
@@ -128,8 +128,11 @@ static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) 
			return false;

		}



		if (qedf->vlan_id > 0)

		if (qedf->vlan_id > 0) {

			QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,

				  "vlan = 0x%x already set.\n", qedf->vlan_id);

			return true;

		}



		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,

			   "Retry %d.\n", qedf->fipvlan_retries);
@@ -162,6 +165,8 @@ static void qedf_handle_link_update(struct work_struct *work) 
			return;



		if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {

			QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,

				  "Link is down, resetting vlan_id.\n");

			qedf->vlan_id = 0;

			return;

		}
@@ -311,8 +316,10 @@ int qedf_send_flogi(struct qedf_ctx *qedf) 


	lport = qedf->lport;



	if (!lport->tt.elsct_send)

	if (!lport->tt.elsct_send) {

		QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");

		return -EINVAL;

	}



	fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));

	if (!fp) {
@@ -2340,12 +2347,14 @@ static void qedf_recv_frame(struct qedf_ctx *qedf, 
	fr_dev(fp) = lport;

	fr_sof(fp) = hp->fcoe_sof;

	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {

		QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");

		kfree_skb(skb);

		return;

	}

	fr_eof(fp) = crc_eof.fcoe_eof;

	fr_crc(fp) = crc_eof.fcoe_crc32;

	if (pskb_trim(skb, fr_len)) {

		QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");

		kfree_skb(skb);

		return;

	}
@@ -2406,8 +2415,8 @@ static void qedf_recv_frame(struct qedf_ctx *qedf, 
	 * empty then this is not addressed to our port so simply drop it.

	 */

	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {

		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,

		    "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,

			  "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",

			  lport->port_id, ntoh24(fh->fh_d_id));

		kfree_skb(skb);

		return;
@@ -2417,6 +2426,8 @@ static void qedf_recv_frame(struct qedf_ctx *qedf, 
	if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&

	    (f_ctl & FC_FC_EX_CTX)) {

		/* Drop incoming ABTS response that has both SEQ/EX CTX set */

		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,

			  "Dropping ABTS response as both SEQ/EX CTX set.\n");

		kfree_skb(skb);

		return;

	}
@@ -2560,8 +2571,9 @@ static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 
	    sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);



	if (!sb_virt) {

		QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "

			  "for id = %d.\n", sb_id);

		QEDF_ERR(&qedf->dbg_ctx,

			 "Status block allocation failed for id = %d.\n",

			 sb_id);

		return -ENOMEM;

	}
@@ -2569,8 +2581,9 @@ static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, 
	    sb_id, QED_SB_TYPE_STORAGE);



	if (ret) {

		QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "

			  "failed for id = %d.\n", sb_id);

		QEDF_ERR(&qedf->dbg_ctx,

			 "Status block initialization failed (0x%x) for id = %d.\n",

			 ret, sb_id);

		return ret;

	}
@@ -2654,13 +2667,18 @@ void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 
	io_req = &qedf->cmd_mgr->cmds[xid];



	/* Completion not for a valid I/O anymore so just return */

	if (!io_req)

	if (!io_req) {

		QEDF_ERR(&qedf->dbg_ctx,

			 "io_req is NULL for xid=0x%x.\n", xid);

		return;

	}



	fcport = io_req->fcport;



	if (fcport == NULL) {

		QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");

		QEDF_ERR(&qedf->dbg_ctx,

			 "fcport is NULL for xid=0x%x io_req=%p.\n",

			 xid, io_req);

		return;

	}
@@ -2669,7 +2687,8 @@ void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) 
	 * isn't valid and shouldn't be taken. We should just return.

	 */

	if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {

		QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");

		QEDF_ERR(&qedf->dbg_ctx,

			 "Session not offloaded yet, fcport = %p.\n", fcport);

		return;

	}
@@ -2881,6 +2900,7 @@ static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 
	 */

	if (!qedf->p_cpuq) {

		status = 1;

		QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");

		goto mem_alloc_failure;

	}
@@ -2896,8 +2916,10 @@ static int qedf_alloc_global_queues(struct qedf_ctx *qedf) 


	/* Allocate DMA coherent buffers for BDQ */

	rc = qedf_alloc_bdq(qedf);

	if (rc)

	if (rc) {

		QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");

		goto mem_alloc_failure;

	}



	/* Allocate a CQ and an associated PBL for each MSI-X vector */

	for (i = 0; i < qedf->num_queues; i++) {
@@ -3209,6 +3231,7 @@ static int __qedf_probe(struct pci_dev *pdev, int mode) 
	qed_params.is_vf = is_vf;

	qedf->cdev = qed_ops->common->probe(pdev, &qed_params);

	if (!qedf->cdev) {

		QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");

		rc = -ENODEV;

		goto err1;

	}
@@ -3277,8 +3300,10 @@ static int __qedf_probe(struct pci_dev *pdev, int mode) 


	/* Setup interrupts */

	rc = qedf_setup_int(qedf);

	if (rc)

	if (rc) {

		QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");

		goto err3;

	}



	rc = qed_ops->start(qedf->cdev, &qedf->tasks);

	if (rc) {

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