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[SCSI] zfcp: Remove some port flags

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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>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Christof Schmitt 2009-03-02 13:08:54 +01:00 committed by James Bottomley
parent 77c019768f
commit a5b11dda12
5 changed files with 11 additions and 32 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/s390/scsi/zfcp_aux.c
View file

@ -249,8 +249,8 @@ struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter,
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(struct zfcp_adapter *adapter, u64 wwpn,
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))

3
drivers/s390/scsi/zfcp_def.h
View file

@ -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 {

16
drivers/s390/scsi/zfcp_erp.c
View file

@ -777,10 +777,7 @@ static int zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *act)
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_common(struct zfcp_erp_action *act)
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(struct zfcp_erp_action *act, int result)
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) {

5
drivers/s390/scsi/zfcp_fc.c
View file

@ -259,10 +259,9 @@ static void zfcp_fc_ns_gid_pn_eval(unsigned long data)
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;

6
drivers/s390/scsi/zfcp_fsf.c
View file

@ -1712,7 +1712,7 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
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_handler(struct zfcp_fsf_req *req)
&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 zfcp_erp_action *erp_action)
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);