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From: Himanshu Madhani <himanshu.madhani@cavium.com>
To: target-devel@vger.kernel.org, Bart.VanAssche@sandisk.com,
	hch@infradead.org, nab@linux-iscsi.org
Cc: giridhar.malavali@cavium.com, linux-scsi@vger.kernel.org,
	himanshu.madhani@cavium.com
Subject: [PATCH 02/15] qla2xxx: Allow relogin to proceed if remote login did not finish
Date: Thu, 2 Feb 2017 11:42:25 -0800	[thread overview]
Message-ID: <1486064558-365-3-git-send-email-himanshu.madhani@cavium.com> (raw)
In-Reply-To: <1486064558-365-1-git-send-email-himanshu.madhani@cavium.com>

From: Quinn Tran <quinn.tran@cavium.com>

If the remote port have started the login process, then the
PLOGI and PRLI should be back to back. Driver will allow
the remote port to complete the process. For the case where
the remote port decide to back off from sending PRLI, this
local port sets an expiration timer for the PRLI. Once the
expiration time passes, the relogin retry logic is allowed
to go through and perform login with the remote port.

Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
---
 drivers/scsi/qla2xxx/qla_def.h    |  2 ++
 drivers/scsi/qla2xxx/qla_init.c   | 16 ++++++++++++++--
 drivers/scsi/qla2xxx/qla_isr.c    | 25 +++++++++++++++++++------
 drivers/scsi/qla2xxx/qla_target.c |  1 +
 4 files changed, 36 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 2d7d478..b180d51 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2300,6 +2300,8 @@ enum rscn_addr_format {
 	struct ct_sns_desc ct_desc;
 	enum discovery_state disc_state;
 	enum login_state fw_login_state;
+	unsigned long plogi_nack_done_jiff;
+
 	u32 login_gen, last_login_gen;
 	u32 rscn_gen, last_rscn_gen;
 	u32 chip_reset;
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 9f3db52..e84ab37 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -876,10 +876,16 @@ int qla24xx_fcport_handle_login(struct scsi_qla_host *vha, fc_port_t *fcport)
 	fcport->login_retry--;
 
 	if ((fcport->fw_login_state == DSC_LS_PLOGI_PEND) ||
-	    (fcport->fw_login_state == DSC_LS_PLOGI_COMP) ||
 	    (fcport->fw_login_state == DSC_LS_PRLI_PEND))
 		return 0;
 
+	if (fcport->fw_login_state == DSC_LS_PLOGI_COMP) {
+		unsigned long t = fcport->plogi_nack_done_jiff + HZ;
+
+		if (time_before_eq(jiffies, t))
+			return 0;
+	}
+
 	/* for pure Target Mode. Login will not be initiated */
 	if (vha->host->active_mode == MODE_TARGET)
 		return 0;
@@ -1041,10 +1047,16 @@ void qla24xx_handle_relogin_event(scsi_qla_host_t *vha,
 		fcport->flags);
 
 	if ((fcport->fw_login_state == DSC_LS_PLOGI_PEND) ||
-	    (fcport->fw_login_state == DSC_LS_PLOGI_COMP) ||
 	    (fcport->fw_login_state == DSC_LS_PRLI_PEND))
 		return;
 
+	if (fcport->fw_login_state == DSC_LS_PLOGI_COMP) {
+		unsigned long t = fcport->plogi_nack_done_jiff + HZ;
+
+		if (time_before_eq(jiffies, t))
+			return;
+	}
+
 	if (fcport->flags & FCF_ASYNC_SENT) {
 		fcport->login_retry++;
 		set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index fb1c39c..bd998bf 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1634,9 +1634,9 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *,
 		QLA_LOGIO_LOGIN_RETRIED : 0;
 	if (logio->entry_status) {
 		ql_log(ql_log_warn, fcport->vha, 0x5034,
-		    "Async-%s error entry - hdl=%x"
+		    "Async-%s error entry - %8phC hdl=%x"
 		    "portid=%02x%02x%02x entry-status=%x.\n",
-		    type, sp->handle, fcport->d_id.b.domain,
+		    type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
 		    fcport->d_id.b.area, fcport->d_id.b.al_pa,
 		    logio->entry_status);
 		ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
@@ -1647,8 +1647,9 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *,
 
 	if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
 		ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
-		    "Async-%s complete - hdl=%x portid=%02x%02x%02x "
-		    "iop0=%x.\n", type, sp->handle, fcport->d_id.b.domain,
+		    "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
+		    "iop0=%x.\n", type, fcport->port_name, sp->handle,
+		    fcport->d_id.b.domain,
 		    fcport->d_id.b.area, fcport->d_id.b.al_pa,
 		    le32_to_cpu(logio->io_parameter[0]));
 
@@ -1688,6 +1689,17 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *,
 	case LSC_SCODE_NPORT_USED:
 		data[0] = MBS_LOOP_ID_USED;
 		break;
+	case LSC_SCODE_CMD_FAILED:
+		if (iop[1] == 0x0606) {
+			/*
+			 * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
+			 * Target side acked.
+			 */
+			data[0] = MBS_COMMAND_COMPLETE;
+			goto logio_done;
+		}
+		data[0] = MBS_COMMAND_ERROR;
+		break;
 	case LSC_SCODE_NOXCB:
 		vha->hw->exch_starvation++;
 		if (vha->hw->exch_starvation > 5) {
@@ -1709,8 +1721,9 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *,
 	}
 
 	ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
-	    "Async-%s failed - hdl=%x portid=%02x%02x%02x comp=%x "
-	    "iop0=%x iop1=%x.\n", type, sp->handle, fcport->d_id.b.domain,
+	    "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
+	    "iop0=%x iop1=%x.\n", type, fcport->port_name,
+		sp->handle, fcport->d_id.b.domain,
 	    fcport->d_id.b.area, fcport->d_id.b.al_pa,
 	    le16_to_cpu(logio->comp_status),
 	    le32_to_cpu(logio->io_parameter[0]),
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 270e01c..821e63f 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -554,6 +554,7 @@ void qla2x00_async_nack_sp_done(void *s, int res)
 		sp->fcport->login_gen++;
 		sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP;
 		sp->fcport->logout_on_delete = 1;
+		sp->fcport->plogi_nack_done_jiff = jiffies;
 		break;
 
 	case SRB_NACK_PRLI:
-- 
1.8.3.1

  parent reply	other threads:[~2017-02-02 19:42 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-02 19:42 [PATCH 00/15] qla2xxx: Bug Fixes and updates for target Himanshu Madhani
2017-02-02 19:42 ` [PATCH 01/15] qla2xxx: Fix delayed response to command for loop mode/direct connect Himanshu Madhani
2017-02-02 19:42 ` Himanshu Madhani [this message]
2017-02-02 19:42 ` [PATCH 03/15] qla2xxx: Allow vref count to timeout on vport delete Himanshu Madhani
2017-02-02 19:42 ` [PATCH 04/15] qla2xxx: Use IOCB interface to submit non-critical MBX Himanshu Madhani
2017-02-02 19:42 ` [PATCH 05/15] qla2xxx: Add DebugFS node to display Port Database Himanshu Madhani
2017-02-02 19:42 ` [PATCH 06/15] qla2xxx: Improve T10-DIF/PI handling in driver Himanshu Madhani
2017-02-02 19:42 ` [PATCH 07/15] qla2xxx: Export DIF stats via debugfs Himanshu Madhani
2017-02-02 19:42 ` [PATCH 08/15] qla2xxx: Change scsi host lookup method Himanshu Madhani
2017-02-02 19:42 ` [PATCH 09/15] qla2xxx: Fix memory leak for abts processing Himanshu Madhani
2017-02-02 19:42 ` [PATCH 10/15] qla2xxx: Fix request queue corruption Himanshu Madhani
2017-02-02 19:42 ` [PATCH 11/15] qla2xxx: Fix inadequate lock protection for ABTS Himanshu Madhani
2017-02-02 19:42 ` [PATCH 12/15] qla2xxx: Fix warnings about inconsistent indenting Himanshu Madhani
2017-02-02 19:42 ` [PATCH 13/15] qla2xxx: Add async new target notification Himanshu Madhani
2017-02-02 19:42 ` [PATCH 14/15] qla2xxx: Fix sess_lock & hardware_lock lock order problem Himanshu Madhani
2017-02-02 19:42 ` [PATCH 15/15] qla2xxx: Update driver version to 9.00.00.00-k Himanshu Madhani
2017-02-03 16:26 ` [PATCH 00/15] qla2xxx: Bug Fixes and updates for target Bart Van Assche
2017-02-03 17:25   ` Madhani, Himanshu

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