From: Christof Schmitt <christof.schmitt@de.ibm.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: linux-scsi@vger.kernel.org, linux-s390@vger.kernel.org,
schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com,
Swen Schillig <swen@vnet.ibm.com>,
Christof Schmitt <christof.schmitt@de.ibm.com>
Subject: [patch 01/18] [PATCH] zfcp: Remove some port flags
Date: Mon, 02 Mar 2009 13:08:54 +0100 [thread overview]
Message-ID: <20090302121002.146445000@de.ibm.com> (raw)
In-Reply-To: 20090302120853.279447000@de.ibm.com
[-- Attachment #1: 700-zfcp-port-flags.diff --]
[-- Type: text/plain, Size: 6014 bytes --]
From: Christof Schmitt <christof.schmitt@de.ibm.com>
PORT_PHYS_CLOSING is only set and cleared, but not actually used
for status checking.
PORT_INVALID_WWPN is set when the GID_PN request does not return
a d_id for a remote port, e.g. when a remote port has been
unplugged. For this case, the d_id is zero. In the erp we can
check the d_id and use the normal escalation procedure that gives
up after three retries and remove the special case.
PORT_NO_WWPN is unused: Each port in the remote port list has a
valid wwpn. The WKA ports are now tracked outside the port
list. Remove the PORT_NO_WWPN flag, since this is no longer set
for any port.
Acked-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
---
drivers/s390/scsi/zfcp_aux.c | 13 ++++++-------
drivers/s390/scsi/zfcp_def.h | 3 ---
drivers/s390/scsi/zfcp_erp.c | 16 ++--------------
drivers/s390/scsi/zfcp_fc.c | 5 ++---
drivers/s390/scsi/zfcp_fsf.c | 6 +-----
5 files changed, 11 insertions(+), 32 deletions(-)
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_aux.c linux-2.6-patched/drivers/s390/scsi/zfcp_aux.c
--- linux-2.6/drivers/s390/scsi/zfcp_aux.c 2009-03-01 16:41:01.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_aux.c 2009-03-01 16:41:29.000000000 +0100
@@ -249,8 +249,8 @@ struct zfcp_port *zfcp_get_port_by_wwpn(
struct zfcp_port *port;
list_for_each_entry(port, &adapter->port_list_head, list)
- if ((port->wwpn == wwpn) && !(atomic_read(&port->status) &
- (ZFCP_STATUS_PORT_NO_WWPN | ZFCP_STATUS_COMMON_REMOVE)))
+ if ((port->wwpn == wwpn) &&
+ !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE))
return port;
return NULL;
}
@@ -620,11 +620,10 @@ struct zfcp_port *zfcp_port_enqueue(stru
dev_set_drvdata(&port->sysfs_device, port);
read_lock_irq(&zfcp_data.config_lock);
- if (!(status & ZFCP_STATUS_PORT_NO_WWPN))
- if (zfcp_get_port_by_wwpn(adapter, wwpn)) {
- read_unlock_irq(&zfcp_data.config_lock);
- goto err_out_free;
- }
+ if (zfcp_get_port_by_wwpn(adapter, wwpn)) {
+ read_unlock_irq(&zfcp_data.config_lock);
+ goto err_out_free;
+ }
read_unlock_irq(&zfcp_data.config_lock);
if (device_register(&port->sysfs_device))
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_def.h linux-2.6-patched/drivers/s390/scsi/zfcp_def.h
--- linux-2.6/drivers/s390/scsi/zfcp_def.h 2009-03-01 16:41:01.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_def.h 2009-03-01 16:41:29.000000000 +0100
@@ -243,9 +243,6 @@ struct zfcp_ls_adisc {
/* remote port status */
#define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001
-#define ZFCP_STATUS_PORT_PHYS_CLOSING 0x00000004
-#define ZFCP_STATUS_PORT_NO_WWPN 0x00000008
-#define ZFCP_STATUS_PORT_INVALID_WWPN 0x00000020
/* well known address (WKA) port status*/
enum zfcp_wka_status {
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_erp.c linux-2.6-patched/drivers/s390/scsi/zfcp_erp.c
--- linux-2.6/drivers/s390/scsi/zfcp_erp.c 2009-03-01 16:41:01.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_erp.c 2009-03-01 16:41:29.000000000 +0100
@@ -777,10 +777,7 @@ static int zfcp_erp_port_forced_strategy
static void zfcp_erp_port_strategy_clearstati(struct zfcp_port *port)
{
- atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
- ZFCP_STATUS_PORT_PHYS_CLOSING |
- ZFCP_STATUS_PORT_INVALID_WWPN,
- &port->status);
+ atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED, &port->status);
}
static int zfcp_erp_port_forced_strategy(struct zfcp_erp_action *erp_action)
@@ -875,13 +872,8 @@ static int zfcp_erp_port_strategy_open_c
return ZFCP_ERP_CONTINUES;
}
case ZFCP_ERP_STEP_NAMESERVER_LOOKUP:
- if (!port->d_id) {
- if (p_status & (ZFCP_STATUS_PORT_INVALID_WWPN)) {
- zfcp_erp_port_failed(port, 26, NULL);
- return ZFCP_ERP_EXIT;
- }
+ if (!port->d_id)
return ZFCP_ERP_FAILED;
- }
return zfcp_erp_port_strategy_open_port(act);
case ZFCP_ERP_STEP_PORT_OPENING:
@@ -1269,10 +1261,6 @@ static void zfcp_erp_action_cleanup(stru
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
- if (atomic_read(&port->status) & ZFCP_STATUS_PORT_NO_WWPN) {
- zfcp_port_put(port);
- return;
- }
if ((result == ZFCP_ERP_SUCCEEDED) && !port->rport)
zfcp_erp_rport_register(port);
if ((result != ZFCP_ERP_SUCCEEDED) && port->rport) {
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_fc.c linux-2.6-patched/drivers/s390/scsi/zfcp_fc.c
--- linux-2.6/drivers/s390/scsi/zfcp_fc.c 2009-03-01 16:41:01.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_fc.c 2009-03-01 16:41:29.000000000 +0100
@@ -259,10 +259,9 @@ static void zfcp_fc_ns_gid_pn_eval(unsig
if (ct->status)
return;
- if (ct_iu_resp->header.cmd_rsp_code != ZFCP_CT_ACCEPT) {
- atomic_set_mask(ZFCP_STATUS_PORT_INVALID_WWPN, &port->status);
+ if (ct_iu_resp->header.cmd_rsp_code != ZFCP_CT_ACCEPT)
return;
- }
+
/* paranoia */
if (ct_iu_req->wwpn != port->wwpn)
return;
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_fsf.c linux-2.6-patched/drivers/s390/scsi/zfcp_fsf.c
--- linux-2.6/drivers/s390/scsi/zfcp_fsf.c 2009-03-01 16:41:01.000000000 +0100
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_fsf.c 2009-03-01 16:41:29.000000000 +0100
@@ -1712,7 +1712,7 @@ static void zfcp_fsf_close_physical_port
struct zfcp_unit *unit;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
- goto skip_fsfstatus;
+ return;
switch (header->fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
@@ -1752,8 +1752,6 @@ static void zfcp_fsf_close_physical_port
&unit->status);
break;
}
-skip_fsfstatus:
- atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status);
}
/**
@@ -1789,8 +1787,6 @@ int zfcp_fsf_close_physical_port(struct
req->erp_action = erp_action;
req->handler = zfcp_fsf_close_physical_port_handler;
erp_action->fsf_req = req;
- atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING,
- &erp_action->port->status);
zfcp_fsf_start_erp_timer(req);
retval = zfcp_fsf_req_send(req);
next prev parent reply other threads:[~2009-03-02 12:10 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-02 12:08 [patch 00/18] zfcp updates for 2.6.30 Christof Schmitt
2009-03-02 12:08 ` Christof Schmitt [this message]
2009-03-02 12:08 ` [patch 02/18] [PATCH] zfcp: Remove UNIT_REGISTERED status flag Christof Schmitt
2009-03-02 12:08 ` [patch 03/18] [Patch] zfcp: add measurement data for average qdio queue utilisation Christof Schmitt
2009-03-02 12:08 ` [patch 04/18] [PATCH] zfcp: Simplify latency lock handling Christof Schmitt
2009-03-02 12:08 ` [patch 05/18] [PATCH] zfcp: Only increment req_id for successfully issued requests Christof Schmitt
2009-03-02 12:08 ` [patch 06/18] [PATCH] zfcp: Wait for free SBALs when possible Christof Schmitt
2009-03-02 12:09 ` [patch 07/18] [PATCH] zfcp: Improve reliability of SCSI eh handlers in zfcp Christof Schmitt
2009-03-02 12:09 ` [patch 08/18] [PATCH] zfcp: Send ELS ADISC from workqueue Christof Schmitt
2009-03-02 12:09 ` [patch 09/18] [PATCH] zfcp: remove undefined subtype for status read response Christof Schmitt
2009-03-02 12:09 ` [patch 10/18] [PATCH] zfcp: prevent adapter close on initial adapter open Christof Schmitt
2009-03-02 12:09 ` [patch 11/18] [PATCH] zfcp: replace current ERP logging with a more convenient version Christof Schmitt
2009-03-02 12:09 ` [patch 12/18] [PATCH] zfcp: Remove PCI flag Christof Schmitt
2009-03-02 12:09 ` [patch 13/18] [PATCH] zfcp: Report fc_host_port_type as NPIV Christof Schmitt
2009-03-02 12:09 ` [patch 14/18] [PATCH] zfcp: incorrect reaction on incoming RSCN Christof Schmitt
2009-03-02 12:09 ` [patch 15/18] [PATCH] zfcp: Block FC transport rports early on errors Christof Schmitt
2009-03-02 12:09 ` [patch 16/18] [PATCH] zfcp: erp failed status bit will not be set Christof Schmitt
2009-03-02 12:09 ` [patch 17/18] [PATCH] zfcp: fix queue, scheduled work processing Christof Schmitt
2009-03-02 12:09 ` [patch 18/18] [PATCH] zfcp: Ensure all work is cancelled on adapter dequeue Christof Schmitt
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