/*
- *
- * linux/drivers/s390/scsi/zfcp_erp.c
- *
- * FCP adapter driver for IBM eServer zSeries
- *
- * (C) Copyright IBM Corp. 2002, 2004
- *
- * Author(s): Martin Peschke <mpeschke@de.ibm.com>
- * Raimund Schroeder <raimund.schroeder@de.ibm.com>
- * Aron Zeh
- * Wolfgang Taphorn
- * Stefan Bader <stefan.bader@de.ibm.com>
- * Heiko Carstens <heiko.carstens@de.ibm.com>
- * Andreas Herrmann <aherrman@de.ibm.com>
+ * This file is part of the zfcp device driver for
+ * FCP adapters for IBM System z9 and zSeries.
+ *
+ * (C) Copyright IBM Corp. 2002, 2006
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#define ZFCP_LOG_AREA ZFCP_LOG_AREA_ERP
-#define ZFCP_ERP_REVISION "$Revision: 1.86 $"
-
#include "zfcp_ext.h"
static int zfcp_erp_adisc(struct zfcp_port *);
static int zfcp_erp_adapter_strategy(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *, int);
static int zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *);
+static void zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *);
+static void zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_open(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *);
static int zfcp_erp_unit_strategy_close(struct zfcp_erp_action *);
static int zfcp_erp_unit_strategy_open(struct zfcp_erp_action *);
-static int zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *);
-static int zfcp_erp_action_dismiss_port(struct zfcp_port *);
-static int zfcp_erp_action_dismiss_unit(struct zfcp_unit *);
-static int zfcp_erp_action_dismiss(struct zfcp_erp_action *);
+static void zfcp_erp_action_dismiss_port(struct zfcp_port *);
+static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *);
+static void zfcp_erp_action_dismiss(struct zfcp_erp_action *);
static int zfcp_erp_action_enqueue(int, struct zfcp_adapter *,
struct zfcp_port *, struct zfcp_unit *);
zfcp_erp_adapter_reopen(adapter, 0);
}
-/*
- * function: zfcp_fsf_scsi_er_timeout_handler
- *
- * purpose: This function needs to be called whenever a SCSI error recovery
- * action (abort/reset) does not return.
- * Re-opening the adapter means that the command can be returned
- * by zfcp (it is guarranteed that it does not return via the
- * adapter anymore). The buffer can then be used again.
- *
- * returns: sod all
+/**
+ * zfcp_fsf_scsi_er_timeout_handler - timeout handler for scsi eh tasks
+ *
+ * This function needs to be called whenever a SCSI error recovery
+ * action (abort/reset) does not return. Re-opening the adapter means
+ * that the abort/reset command can be returned by zfcp. It won't complete
+ * via the adapter anymore (because qdio queues are closed). If ERP is
+ * already running on this adapter it will be stopped.
*/
-void
-zfcp_fsf_scsi_er_timeout_handler(unsigned long data)
+void zfcp_fsf_scsi_er_timeout_handler(unsigned long data)
{
struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
+ unsigned long flags;
ZFCP_LOG_NORMAL("warning: SCSI error recovery timed out. "
"Restarting all operations on the adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
debug_text_event(adapter->erp_dbf, 1, "eh_lmem_tout");
- zfcp_erp_adapter_reopen(adapter, 0);
- return;
+ write_lock_irqsave(&adapter->erp_lock, flags);
+ if (atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING,
+ &adapter->status)) {
+ zfcp_erp_modify_adapter_status(adapter,
+ ZFCP_STATUS_COMMON_UNBLOCKED|ZFCP_STATUS_COMMON_OPEN,
+ ZFCP_CLEAR);
+ zfcp_erp_action_dismiss_adapter(adapter);
+ write_unlock_irqrestore(&adapter->erp_lock, flags);
+ /* dismiss all pending requests including requests for ERP */
+ zfcp_fsf_req_dismiss_all(adapter);
+ adapter->fsf_req_seq_no = 0;
+ } else
+ write_unlock_irqrestore(&adapter->erp_lock, flags);
+ zfcp_erp_adapter_reopen(adapter, 0);
}
/*
* initiates adapter recovery which is done
* asynchronously
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
int
* purpose: Wrappper for zfcp_erp_adapter_reopen_internal
* used to ensure the correct locking
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
int
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
int
zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear_mask)
{
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
int
zfcp_erp_port_shutdown(struct zfcp_port *port, int clear_mask)
{
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
int
zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear_mask)
{
int retval = 0;
struct timer_list *timer;
- send_els = kmalloc(sizeof(struct zfcp_send_els), GFP_ATOMIC);
+ send_els = kzalloc(sizeof(struct zfcp_send_els), GFP_ATOMIC);
if (send_els == NULL)
goto nomem;
- memset(send_els, 0, sizeof(*send_els));
- send_els->req = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
+ send_els->req = kzalloc(sizeof(struct scatterlist), GFP_ATOMIC);
if (send_els->req == NULL)
goto nomem;
- memset(send_els->req, 0, sizeof(*send_els->req));
- send_els->resp = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
+ send_els->resp = kzalloc(sizeof(struct scatterlist), GFP_ATOMIC);
if (send_els->resp == NULL)
goto nomem;
- memset(send_els->resp, 0, sizeof(*send_els->resp));
address = (void *) get_zeroed_page(GFP_ATOMIC);
if (address == NULL)
/* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports
without FC-AL-2 capability, so we don't set it */
- adisc->wwpn = adapter->wwpn;
- adisc->wwnn = adapter->wwnn;
- adisc->nport_id = adapter->s_id;
+ adisc->wwpn = fc_host_port_name(adapter->scsi_host);
+ adisc->wwnn = fc_host_node_name(adapter->scsi_host);
+ adisc->nport_id = fc_host_port_id(adapter->scsi_host);
ZFCP_LOG_INFO("ADISC request from s_id 0x%08x to d_id 0x%08x "
"(wwpn=0x%016Lx, wwnn=0x%016Lx, "
"hard_nport_id=0x%08x, nport_id=0x%08x)\n",
- adapter->s_id, send_els->d_id, (wwn_t) adisc->wwpn,
+ adisc->nport_id, send_els->d_id, (wwn_t) adisc->wwpn,
(wwn_t) adisc->wwnn, adisc->hard_nport_id,
adisc->nport_id);
struct zfcp_send_els *send_els;
struct zfcp_port *port;
struct zfcp_adapter *adapter;
- fc_id_t d_id;
+ u32 d_id;
struct zfcp_ls_adisc_acc *adisc;
send_els = (struct zfcp_send_els *) data;
ZFCP_LOG_INFO("ADISC response from d_id 0x%08x to s_id "
"0x%08x (wwpn=0x%016Lx, wwnn=0x%016Lx, "
"hard_nport_id=0x%08x, nport_id=0x%08x)\n",
- d_id, adapter->s_id, (wwn_t) adisc->wwpn,
- (wwn_t) adisc->wwnn, adisc->hard_nport_id,
- adisc->nport_id);
+ d_id, fc_host_port_id(adapter->scsi_host),
+ (wwn_t) adisc->wwpn, (wwn_t) adisc->wwnn,
+ adisc->hard_nport_id, adisc->nport_id);
/* set wwnn for port */
if (port->wwnn == 0)
* initiates Forced Reopen recovery which is done
* asynchronously
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
static int
* purpose: Wrappper for zfcp_erp_port_forced_reopen_internal
* used to ensure the correct locking
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
int
* initiates Reopen recovery which is done
* asynchronously
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
static int
* initiates Reopen recovery which is done
* asynchronously
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
static int
return retval;
}
-/*
- * function:
- *
- * purpose: disable I/O,
- * return any open requests and clean them up,
- * aim: no pending and incoming I/O
- *
- * returns:
+/**
+ * zfcp_erp_adapter_block - mark adapter as blocked, block scsi requests
*/
-static void
-zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int clear_mask)
+static void zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int clear_mask)
{
debug_text_event(adapter->erp_dbf, 6, "a_bl");
zfcp_erp_modify_adapter_status(adapter,
clear_mask, ZFCP_CLEAR);
}
-/*
- * function:
- *
- * purpose: enable I/O
- *
- * returns:
+/**
+ * zfcp_erp_adapter_unblock - mark adapter as unblocked, allow scsi requests
*/
-static void
-zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
+static void zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
{
debug_text_event(adapter->erp_dbf, 6, "a_ubl");
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status);
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status);
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static void
zfcp_erp_action_ready(struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
if (erp_action->fsf_req) {
- /* take lock to ensure that request is not being deleted meanwhile */
- spin_lock(&adapter->fsf_req_list_lock);
- /* check whether fsf req does still exist */
- list_for_each_entry(fsf_req, &adapter->fsf_req_list_head, list)
- if (fsf_req == erp_action->fsf_req)
- break;
- if (fsf_req && (fsf_req->erp_action == erp_action)) {
+ /* take lock to ensure that request is not deleted meanwhile */
+ spin_lock(&adapter->req_list_lock);
+ if ((!zfcp_reqlist_ismember(adapter,
+ erp_action->fsf_req->req_id)) &&
+ (fsf_req->erp_action == erp_action)) {
/* fsf_req still exists */
debug_text_event(adapter->erp_dbf, 3, "a_ca_req");
debug_event(adapter->erp_dbf, 3, &fsf_req,
sizeof (unsigned long));
- /* dismiss fsf_req of timed out or dismissed erp_action */
+ /* dismiss fsf_req of timed out/dismissed erp_action */
if (erp_action->status & (ZFCP_STATUS_ERP_DISMISSED |
ZFCP_STATUS_ERP_TIMEDOUT)) {
debug_text_event(adapter->erp_dbf, 3,
*/
erp_action->fsf_req = NULL;
}
- spin_unlock(&adapter->fsf_req_list_lock);
+ spin_unlock(&adapter->req_list_lock);
} else
debug_text_event(adapter->erp_dbf, 3, "a_ca_noreq");
return retval;
}
-/*
- * purpose: generic handler for asynchronous events related to erp_action events
- * (normal completion, time-out, dismissing, retry after
- * low memory condition)
- *
- * note: deletion of timer is not required (e.g. in case of a time-out),
- * but a second try does no harm,
- * we leave it in here to allow for greater simplification
+/**
+ * zfcp_erp_async_handler_nolock - complete erp_action
*
- * returns: 0 - there was an action to handle
- * !0 - otherwise
+ * Used for normal completion, time-out, dismissal and failure after
+ * low memory condition.
*/
-static int
-zfcp_erp_async_handler_nolock(struct zfcp_erp_action *erp_action,
- unsigned long set_mask)
+static void zfcp_erp_async_handler_nolock(struct zfcp_erp_action *erp_action,
+ unsigned long set_mask)
{
- int retval;
struct zfcp_adapter *adapter = erp_action->adapter;
if (zfcp_erp_action_exists(erp_action) == ZFCP_ERP_ACTION_RUNNING) {
del_timer(&erp_action->timer);
erp_action->status |= set_mask;
zfcp_erp_action_ready(erp_action);
- retval = 0;
} else {
/* action is ready or gone - nothing to do */
debug_text_event(adapter->erp_dbf, 3, "a_asyh_gone");
debug_event(adapter->erp_dbf, 3, &erp_action->action,
sizeof (int));
- retval = 1;
}
-
- return retval;
}
-/*
- * purpose: generic handler for asynchronous events related to erp_action
- * events (normal completion, time-out, dismissing, retry after
- * low memory condition)
- *
- * note: deletion of timer is not required (e.g. in case of a time-out),
- * but a second try does no harm,
- * we leave it in here to allow for greater simplification
- *
- * returns: 0 - there was an action to handle
- * !0 - otherwise
+/**
+ * zfcp_erp_async_handler - wrapper for erp_async_handler_nolock w/ locking
*/
-int
-zfcp_erp_async_handler(struct zfcp_erp_action *erp_action,
- unsigned long set_mask)
+void zfcp_erp_async_handler(struct zfcp_erp_action *erp_action,
+ unsigned long set_mask)
{
struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long flags;
- int retval;
write_lock_irqsave(&adapter->erp_lock, flags);
- retval = zfcp_erp_async_handler_nolock(erp_action, set_mask);
+ zfcp_erp_async_handler_nolock(erp_action, set_mask);
write_unlock_irqrestore(&adapter->erp_lock, flags);
-
- return retval;
}
/*
zfcp_erp_async_handler(erp_action, ZFCP_STATUS_ERP_TIMEDOUT);
}
-/*
- * purpose: is called for an erp_action which needs to be ended
- * though not being done,
- * this is usually required if an higher is generated,
- * action gets an appropriate flag and will be processed
- * accordingly
+/**
+ * zfcp_erp_action_dismiss - dismiss an erp_action
*
- * locks: erp_lock held (thus we need to call another handler variant)
+ * adapter->erp_lock must be held
+ *
+ * Dismissal of an erp_action is usually required if an erp_action of
+ * higher priority is generated.
*/
-static int
-zfcp_erp_action_dismiss(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_action_dismiss(struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
debug_event(adapter->erp_dbf, 2, &erp_action->action, sizeof (int));
zfcp_erp_async_handler_nolock(erp_action, ZFCP_STATUS_ERP_DISMISSED);
-
- return 0;
}
int
atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
- rwlock_init(&adapter->erp_lock);
- INIT_LIST_HEAD(&adapter->erp_ready_head);
- INIT_LIST_HEAD(&adapter->erp_running_head);
- sema_init(&adapter->erp_ready_sem, 0);
-
retval = kernel_thread(zfcp_erp_thread, adapter, SIGCHLD);
if (retval < 0) {
ZFCP_LOG_NORMAL("error: creation of erp thread failed for "
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_do_action(struct zfcp_erp_action *erp_action)
{
return result;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_statechange(int action,
u32 status,
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static inline int
zfcp_erp_strategy_statechange_detected(atomic_t * target_status, u32 erp_status)
{
!(ZFCP_STATUS_ERP_CLOSE_ONLY & erp_status));
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result)
{
return result;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_check_port(struct zfcp_port *port, int result)
{
return result;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter, int result)
{
return 0;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_check_queues(struct zfcp_adapter *adapter)
{
return retval;
}
-/*
- * function: zfcp_erp_modify_adapter_status
- *
- * purpose:
- *
- */
void
zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter,
u32 mask, int set_or_clear)
* purpose: Wrappper for zfcp_erp_port_reopen_all_internal
* used to ensure the correct locking
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
int
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: FIXME
- */
static int
zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *adapter, int clear_mask)
{
return retval;
}
-/*
- * function: zfcp_qdio_cleanup
- *
- * purpose: cleans up QDIO operation for the specified adapter
- *
- * returns: 0 - successful cleanup
- * !0 - failed cleanup
+/**
+ * zfcp_erp_adapter_strategy_close_qdio - close qdio queues for an adapter
*/
-int
+static void
zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *erp_action)
{
- int retval = ZFCP_ERP_SUCCEEDED;
int first_used;
int used_count;
struct zfcp_adapter *adapter = erp_action->adapter;
ZFCP_LOG_DEBUG("error: attempt to shut down inactive QDIO "
"queues on adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
- retval = ZFCP_ERP_FAILED;
- goto out;
+ return;
}
/*
* Get queue_lock and clear QDIOUP flag. Thus it's guaranteed that
* do_QDIO won't be called while qdio_shutdown is in progress.
*/
-
write_lock_irq(&adapter->request_queue.queue_lock);
atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status);
write_unlock_irq(&adapter->request_queue.queue_lock);
adapter->request_queue.free_index = 0;
atomic_set(&adapter->request_queue.free_count, 0);
adapter->request_queue.distance_from_int = 0;
- out:
- return retval;
}
-/*
- * function: zfcp_fsf_init
- *
- * purpose: initializes FSF operation for the specified adapter
- *
- * returns: 0 - succesful initialization of FSF operation
- * !0 - failed to initialize FSF operation
- */
static int
zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *erp_action)
{
- int xconfig, xport;
+ int retval;
- if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED,
- &erp_action->adapter->status)) {
- zfcp_erp_adapter_strategy_open_fsf_xport(erp_action);
- atomic_set(&erp_action->adapter->erp_counter, 0);
+ retval = zfcp_erp_adapter_strategy_open_fsf_xconfig(erp_action);
+ if (retval == ZFCP_ERP_FAILED)
return ZFCP_ERP_FAILED;
- }
- xconfig = zfcp_erp_adapter_strategy_open_fsf_xconfig(erp_action);
- xport = zfcp_erp_adapter_strategy_open_fsf_xport(erp_action);
- if ((xconfig == ZFCP_ERP_FAILED) || (xport == ZFCP_ERP_FAILED))
+ retval = zfcp_erp_adapter_strategy_open_fsf_xport(erp_action);
+ if (retval == ZFCP_ERP_FAILED)
return ZFCP_ERP_FAILED;
return zfcp_erp_adapter_strategy_open_fsf_statusread(erp_action);
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *erp_action)
{
atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
&adapter->status);
ZFCP_LOG_DEBUG("Doing exchange config data\n");
- write_lock(&adapter->erp_lock);
+ write_lock_irq(&adapter->erp_lock);
zfcp_erp_action_to_running(erp_action);
- write_unlock(&adapter->erp_lock);
+ write_unlock_irq(&adapter->erp_lock);
zfcp_erp_timeout_init(erp_action);
if (zfcp_fsf_exchange_config_data(erp_action)) {
retval = ZFCP_ERP_FAILED;
static int
zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *erp_action)
{
- int retval = ZFCP_ERP_SUCCEEDED;
- int retries;
- int sleep;
- struct zfcp_adapter *adapter = erp_action->adapter;
+ int ret;
+ struct zfcp_adapter *adapter;
+ adapter = erp_action->adapter;
atomic_clear_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
- for (retries = 0; ; retries++) {
- ZFCP_LOG_DEBUG("Doing exchange port data\n");
- zfcp_erp_action_to_running(erp_action);
- zfcp_erp_timeout_init(erp_action);
- if (zfcp_fsf_exchange_port_data(erp_action, adapter, NULL)) {
- retval = ZFCP_ERP_FAILED;
- debug_text_event(adapter->erp_dbf, 5, "a_fstx_xf");
- ZFCP_LOG_INFO("error: initiation of exchange of "
- "port data failed for adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- }
- debug_text_event(adapter->erp_dbf, 6, "a_fstx_xok");
- ZFCP_LOG_DEBUG("Xchange underway\n");
-
- /*
- * Why this works:
- * Both the normal completion handler as well as the timeout
- * handler will do an 'up' when the 'exchange port data'
- * request completes or times out. Thus, the signal to go on
- * won't be lost utilizing this semaphore.
- * Furthermore, this 'adapter_reopen' action is
- * guaranteed to be the only action being there (highest action
- * which prevents other actions from being created).
- * Resulting from that, the wake signal recognized here
- * _must_ be the one belonging to the 'exchange port
- * data' request.
- */
- down(&adapter->erp_ready_sem);
- if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
- ZFCP_LOG_INFO("error: exchange of port data "
- "for adapter %s timed out\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- }
-
- if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED,
- &adapter->status))
- break;
+ write_lock_irq(&adapter->erp_lock);
+ zfcp_erp_action_to_running(erp_action);
+ write_unlock_irq(&adapter->erp_lock);
- ZFCP_LOG_DEBUG("host connection still initialising... "
- "waiting and retrying...\n");
- /* sleep a little bit before retry */
- sleep = retries < ZFCP_EXCHANGE_PORT_DATA_SHORT_RETRIES ?
- ZFCP_EXCHANGE_PORT_DATA_SHORT_SLEEP :
- ZFCP_EXCHANGE_PORT_DATA_LONG_SLEEP;
- msleep(jiffies_to_msecs(sleep));
+ zfcp_erp_timeout_init(erp_action);
+ ret = zfcp_fsf_exchange_port_data(erp_action, adapter, NULL);
+ if (ret == -EOPNOTSUPP) {
+ debug_text_event(adapter->erp_dbf, 3, "a_xport_notsupp");
+ return ZFCP_ERP_SUCCEEDED;
+ } else if (ret) {
+ debug_text_event(adapter->erp_dbf, 3, "a_xport_failed");
+ return ZFCP_ERP_FAILED;
}
+ debug_text_event(adapter->erp_dbf, 6, "a_xport_ok");
- if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED,
- &adapter->status)) {
- ZFCP_LOG_INFO("error: exchange of port data for "
- "adapter %s failed\n",
- zfcp_get_busid_by_adapter(adapter));
- retval = ZFCP_ERP_FAILED;
+ ret = ZFCP_ERP_SUCCEEDED;
+ down(&adapter->erp_ready_sem);
+ if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
+ ZFCP_LOG_INFO("error: exchange port data timed out (adapter "
+ "%s)\n", zfcp_get_busid_by_adapter(adapter));
+ ret = ZFCP_ERP_FAILED;
}
- return retval;
+ /* don't treat as error for the sake of compatibility */
+ if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status))
+ ZFCP_LOG_INFO("warning: exchange port data failed (adapter "
+ "%s\n", zfcp_get_busid_by_adapter(adapter));
+
+ return ret;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_adapter_strategy_open_fsf_statusread(struct zfcp_erp_action
*erp_action)
return retval;
}
-/*
- * function: zfcp_fsf_cleanup
- *
- * purpose: cleanup FSF operation for specified adapter
- *
- * returns: 0 - FSF operation successfully cleaned up
- * !0 - failed to cleanup FSF operation for this adapter
+/**
+ * zfcp_erp_adapter_strategy_close_fsf - stop FSF operations for an adapter
*/
-static int
+static void
zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *erp_action)
{
- int retval = ZFCP_ERP_SUCCEEDED;
struct zfcp_adapter *adapter = erp_action->adapter;
/*
/* all ports and units are closed */
zfcp_erp_modify_adapter_status(adapter,
ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
-
- return retval;
}
/*
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_port_strategy_open(struct zfcp_erp_action *erp_action)
{
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- *
- * FIXME(design): currently only prepared for fabric (nameserver!)
- */
static int
zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *erp_action)
{
case ZFCP_ERP_STEP_UNINITIALIZED:
case ZFCP_ERP_STEP_PHYS_PORT_CLOSING:
case ZFCP_ERP_STEP_PORT_CLOSING:
- if (adapter->fc_topology == FSF_TOPO_P2P) {
+ if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP) {
if (port->wwpn != adapter->peer_wwpn) {
ZFCP_LOG_NORMAL("Failed to open port 0x%016Lx "
"on adapter %s.\nPeer WWPN "
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_port_strategy_open_nameserver(struct zfcp_erp_action *erp_action)
{
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_port_strategy_clearstati(struct zfcp_port *port)
{
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit)
{
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static inline void
zfcp_erp_timeout_init(struct zfcp_erp_action *erp_action)
{
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
{
/**
* zfcp_erp_action_cleanup
*
- * Register unit with scsi stack if appropiate and fix reference counts.
+ * Register unit with scsi stack if appropriate and fix reference counts.
* Note: Temporary units are not registered with scsi stack.
*/
static void
&& (!atomic_test_mask(ZFCP_STATUS_UNIT_TEMPORARY,
&unit->status))
&& !unit->device
- && port->rport)
- scsi_add_device(port->adapter->scsi_host, 0,
- port->rport->scsi_target_id,
- unit->scsi_lun);
+ && port->rport) {
+ atomic_set_mask(ZFCP_STATUS_UNIT_REGISTERED,
+ &unit->status);
+ scsi_scan_target(&port->rport->dev, 0,
+ port->rport->scsi_target_id,
+ unit->scsi_lun, 0);
+ }
zfcp_unit_put(unit);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
+ if (atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN,
+ &port->status)) {
+ zfcp_port_put(port);
+ break;
+ }
+
if ((result == ZFCP_ERP_SUCCEEDED)
- && !atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN,
- &port->status)
&& !port->rport) {
struct fc_rport_identifiers ids;
ids.node_name = port->wwnn;
"(adapter %s, wwpn=0x%016Lx)\n",
zfcp_get_busid_by_port(port),
port->wwpn);
+ else {
+ scsi_flush_work(adapter->scsi_host);
+ port->rport->maxframe_size = port->maxframe_size;
+ port->rport->supported_classes =
+ port->supported_classes;
+ }
+ }
+ if ((result != ZFCP_ERP_SUCCEEDED) && port->rport) {
+ fc_remote_port_delete(port->rport);
+ port->rport = NULL;
}
zfcp_port_put(port);
break;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
+ if (result != ZFCP_ERP_SUCCEEDED) {
+ struct zfcp_port *port;
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if (port->rport &&
+ !atomic_test_mask(ZFCP_STATUS_PORT_WKA,
+ &port->status)) {
+ fc_remote_port_delete(port->rport);
+ port->rport = NULL;
+ }
+ }
zfcp_adapter_put(adapter);
break;
default:
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: FIXME
- */
-static int
-zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
+void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
{
- int retval = 0;
struct zfcp_port *port;
debug_text_event(adapter->erp_dbf, 5, "a_actab");
else
list_for_each_entry(port, &adapter->port_list_head, list)
zfcp_erp_action_dismiss_port(port);
-
- return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: FIXME
- */
-static int
-zfcp_erp_action_dismiss_port(struct zfcp_port *port)
+static void zfcp_erp_action_dismiss_port(struct zfcp_port *port)
{
- int retval = 0;
struct zfcp_unit *unit;
struct zfcp_adapter *adapter = port->adapter;
else
list_for_each_entry(unit, &port->unit_list_head, list)
zfcp_erp_action_dismiss_unit(unit);
-
- return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: FIXME
- */
-static int
-zfcp_erp_action_dismiss_unit(struct zfcp_unit *unit)
+static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *unit)
{
- int retval = 0;
struct zfcp_adapter *adapter = unit->port->adapter;
debug_text_event(adapter->erp_dbf, 5, "u_actab");
debug_event(adapter->erp_dbf, 5, &unit->fcp_lun, sizeof (fcp_lun_t));
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status))
zfcp_erp_action_dismiss(&unit->erp_action);
-
- return retval;
}
-/*
- * function:
- *
- * purpose: moves erp_action to 'erp running list'
- *
- * returns:
- */
static inline void
zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
{
list_move(&erp_action->list, &erp_action->adapter->erp_running_head);
}
-/*
- * function:
- *
- * purpose: moves erp_action to 'erp ready list'
- *
- * returns:
- */
static inline void
zfcp_erp_action_to_ready(struct zfcp_erp_action *erp_action)
{
list_move(&erp_action->list, &erp_action->adapter->erp_ready_head);
}
-/*
- * function: zfcp_erp_port_boxed
- *
- * purpose:
- */
void
zfcp_erp_port_boxed(struct zfcp_port *port)
{
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED);
}
-/*
- * function: zfcp_erp_unit_boxed
- *
- * purpose:
- */
void
zfcp_erp_unit_boxed(struct zfcp_unit *unit)
{
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED);
}
-/*
- * function: zfcp_erp_port_access_denied
- *
- * purpose:
- */
void
zfcp_erp_port_access_denied(struct zfcp_port *port)
{
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
-/*
- * function: zfcp_erp_unit_access_denied
- *
- * purpose:
- */
void
zfcp_erp_unit_access_denied(struct zfcp_unit *unit)
{
ZFCP_SET);
}
-/*
- * function: zfcp_erp_adapter_access_changed
- *
- * purpose:
- */
void
zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter)
{
return;
debug_text_event(adapter->erp_dbf, 3, "a_access_recover");
- debug_event(adapter->erp_dbf, 3, &adapter->name, 8);
+ debug_event(adapter->erp_dbf, 3, zfcp_get_busid_by_adapter(adapter), 8);
read_lock_irqsave(&zfcp_data.config_lock, flags);
if (adapter->nameserver_port)
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
-/*
- * function: zfcp_erp_port_access_changed
- *
- * purpose:
- */
void
zfcp_erp_port_access_changed(struct zfcp_port *port)
{
zfcp_get_busid_by_adapter(adapter), port->wwpn);
}
-/*
- * function: zfcp_erp_unit_access_changed
- *
- * purpose:
- */
void
zfcp_erp_unit_access_changed(struct zfcp_unit *unit)
{
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff