leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[SCSI] zfcp: introduce struct timer_list in struct zfcp_fsf_req

Browse Source 
This instance will be used whenever a timer is needed for
a request by zfcp.

Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Andreas Herrmann 2006-09-18 22:29:56 +02:00 committed by James Bottomley
parent 4eff4a3651
commit 2abbe866c8
6 changed files with 189 additions and 342 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/s390/scsi/zfcp_aux.c
View File

@ -1135,9 +1135,6 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
/* initialize lock of associated request queue */
rwlock_init(&adapter->request_queue.queue_lock);
/* intitialise SCSI ER timer */
init_timer(&adapter->scsi_er_timer);
/* mark adapter unusable as long as sysfs registration is not complete */
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
@ -1653,7 +1650,6 @@ zfcp_ns_gid_pn_request(struct zfcp_erp_action *erp_action)
gid_pn->ct.handler = zfcp_ns_gid_pn_handler;
gid_pn->ct.handler_data = (unsigned long) gid_pn;
gid_pn->ct.timeout = ZFCP_NS_GID_PN_TIMEOUT;
gid_pn->ct.timer = &erp_action->timer;
gid_pn->port = erp_action->port;
ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.fsf_req_erp,

8
drivers/s390/scsi/zfcp_def.h
View File

@ -137,7 +137,7 @@ zfcp_address_to_sg(void *address, struct scatterlist *list)
#define ZFCP_EXCHANGE_CONFIG_DATA_RETRIES 7
/* timeout value for "default timer" for fsf requests */
#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ);
#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ)
/*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/
@ -779,7 +779,6 @@ typedef void (*zfcp_send_ct_handler_t)(unsigned long);
* @handler_data: data passed to handler function
* @pool: pointer to memory pool for ct request structure
* @timeout: FSF timeout for this request
* @timer: timer (e.g. for request initiated by erp)
* @completion: completion for synchronization purposes
* @status: used to pass error status to calling function
*/
@ -793,7 +792,6 @@ struct zfcp_send_ct {
unsigned long handler_data;
mempool_t *pool;
int timeout;
struct timer_list *timer;
struct completion *completion;
int status;
};
@ -821,7 +819,6 @@ typedef void (*zfcp_send_els_handler_t)(unsigned long);
* @resp_count: number of elements in response scatter-gather list
* @handler: handler function (called for response to the request)
* @handler_data: data passed to handler function
* @timer: timer (e.g. for request initiated by erp)
* @completion: completion for synchronization purposes
* @ls_code: hex code of ELS command
* @status: used to pass error status to calling function
@ -836,7 +833,6 @@ struct zfcp_send_els {
unsigned int resp_count;
zfcp_send_els_handler_t handler;
unsigned long handler_data;
struct timer_list *timer;
struct completion *completion;
int ls_code;
int status;
@ -886,7 +882,6 @@ struct zfcp_adapter {
struct list_head port_remove_lh; /* head of ports to be
removed */
u32 ports; /* number of remote ports */
struct timer_list scsi_er_timer; /* SCSI err recovery watch */
atomic_t reqs_active; /* # active FSF reqs */
unsigned long req_no; /* unique FSF req number */
struct list_head *req_list; /* list of pending reqs */
@ -1003,6 +998,7 @@ struct zfcp_fsf_req {
struct fsf_qtcb *qtcb; /* address of associated QTCB */
u32 seq_no; /* Sequence number of request */
unsigned long data; /* private data of request */
struct timer_list timer; /* used for erp or scsi er */
struct zfcp_erp_action *erp_action; /* used if this request is
issued on behalf of erp */
mempool_t *pool; /* used if request was alloacted

228
drivers/s390/scsi/zfcp_erp.c
View File

@ -64,8 +64,6 @@ static int zfcp_erp_strategy_check_action(struct zfcp_erp_action *, int);
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 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 *);
@ -111,8 +109,62 @@ static inline void zfcp_erp_action_to_ready(struct zfcp_erp_action *);
static inline void zfcp_erp_action_to_running(struct zfcp_erp_action *);
static void zfcp_erp_memwait_handler(unsigned long);
static void zfcp_erp_timeout_handler(unsigned long);
static inline void zfcp_erp_timeout_init(struct zfcp_erp_action *);
/**
* zfcp_close_qdio - close qdio queues for an adapter
*/
static void zfcp_close_qdio(struct zfcp_adapter *adapter)
{
struct zfcp_qdio_queue *req_queue;
int first, count;
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status))
return;
/* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */
req_queue = &adapter->request_queue;
write_lock_irq(&req_queue->queue_lock);
atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status);
write_unlock_irq(&req_queue->queue_lock);
debug_text_event(adapter->erp_dbf, 3, "qdio_down2a");
while (qdio_shutdown(adapter->ccw_device,
QDIO_FLAG_CLEANUP_USING_CLEAR) == -EINPROGRESS)
msleep(1000);
debug_text_event(adapter->erp_dbf, 3, "qdio_down2b");
/* cleanup used outbound sbals */
count = atomic_read(&req_queue->free_count);
if (count < QDIO_MAX_BUFFERS_PER_Q) {
first = (req_queue->free_index+count) % QDIO_MAX_BUFFERS_PER_Q;
count = QDIO_MAX_BUFFERS_PER_Q - count;
zfcp_qdio_zero_sbals(req_queue->buffer, first, count);
}
req_queue->free_index = 0;
atomic_set(&req_queue->free_count, 0);
req_queue->distance_from_int = 0;
adapter->response_queue.free_index = 0;
atomic_set(&adapter->response_queue.free_count, 0);
}
/**
* zfcp_close_fsf - stop FSF operations for an adapter
*
* Dismiss and cleanup all pending fsf_reqs (this wakes up all initiators of
* requests waiting for completion; especially this returns SCSI commands
* with error state).
*/
static void zfcp_close_fsf(struct zfcp_adapter *adapter)
{
/* close queues to ensure that buffers are not accessed by adapter */
zfcp_close_qdio(adapter);
zfcp_fsf_req_dismiss_all(adapter);
/* reset FSF request sequence number */
adapter->fsf_req_seq_no = 0;
/* all ports and units are closed */
zfcp_erp_modify_adapter_status(adapter,
ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
}
/**
* zfcp_fsf_request_timeout_handler - called if a request timed out
@ -121,52 +173,20 @@ static inline void zfcp_erp_timeout_init(struct zfcp_erp_action *);
* This function needs to be called if requests (ELS, Generic Service,
* or SCSI commands) exceed a certain time limit. The assumption is
* that after the time limit the adapter get stuck. So we trigger a reopen of
* the adapter. This should not be used for error recovery, SCSI abort
* commands and SCSI requests from SCSI mid-layer.
* the adapter.
*/
void
zfcp_fsf_request_timeout_handler(unsigned long data)
static void zfcp_fsf_request_timeout_handler(unsigned long data)
{
struct zfcp_adapter *adapter;
adapter = (struct zfcp_adapter *) data;
struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
zfcp_erp_adapter_reopen(adapter, 0);
}
/**
* 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_start_timer(struct zfcp_fsf_req *fsf_req, unsigned long timeout)
{
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");
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);
fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
fsf_req->timer.data = (unsigned long) fsf_req->adapter;
fsf_req->timer.expires = timeout;
add_timer(&fsf_req->timer);
}
/*
@ -282,7 +302,6 @@ zfcp_erp_adisc(struct zfcp_port *port)
struct zfcp_ls_adisc *adisc;
void *address = NULL;
int retval = 0;
struct timer_list *timer;
send_els = kzalloc(sizeof(struct zfcp_send_els), GFP_ATOMIC);
if (send_els == NULL)
@ -329,22 +348,11 @@ zfcp_erp_adisc(struct zfcp_port *port)
(wwn_t) adisc->wwnn, adisc->hard_nport_id,
adisc->nport_id);
timer = kmalloc(sizeof(struct timer_list), GFP_ATOMIC);
if (!timer)
goto nomem;
init_timer(timer);
timer->function = zfcp_fsf_request_timeout_handler;
timer->data = (unsigned long) adapter;
timer->expires = ZFCP_FSF_REQUEST_TIMEOUT;
send_els->timer = timer;
retval = zfcp_fsf_send_els(send_els);
if (retval != 0) {
ZFCP_LOG_NORMAL("error: initiation of Send ELS failed for port "
"0x%08x on adapter %s\n", send_els->d_id,
zfcp_get_busid_by_adapter(adapter));
del_timer(send_els->timer);
goto freemem;
}
@ -356,7 +364,6 @@ zfcp_erp_adisc(struct zfcp_port *port)
if (address != NULL)
__free_pages(send_els->req->page, 0);
if (send_els != NULL) {
kfree(send_els->timer);
kfree(send_els->req);
kfree(send_els->resp);
kfree(send_els);
@ -382,9 +389,6 @@ zfcp_erp_adisc_handler(unsigned long data)
struct zfcp_ls_adisc_acc *adisc;
send_els = (struct zfcp_send_els *) data;
del_timer(send_els->timer);
adapter = send_els->adapter;
port = send_els->port;
d_id = send_els->d_id;
@ -433,7 +437,6 @@ zfcp_erp_adisc_handler(unsigned long data)
out:
zfcp_port_put(port);
__free_pages(send_els->req->page, 0);
kfree(send_els->timer);
kfree(send_els->req);
kfree(send_els->resp);
kfree(send_els);
@ -909,8 +912,6 @@ static void zfcp_erp_async_handler_nolock(struct zfcp_erp_action *erp_action,
debug_text_event(adapter->erp_dbf, 2, "a_asyh_ex");
debug_event(adapter->erp_dbf, 2, &erp_action->action,
sizeof (int));
if (!(set_mask & ZFCP_STATUS_ERP_TIMEDOUT))
del_timer(&erp_action->timer);
erp_action->status |= set_mask;
zfcp_erp_action_ready(erp_action);
} else {
@ -957,8 +958,7 @@ zfcp_erp_memwait_handler(unsigned long data)
* action gets an appropriate flag and will be processed
* accordingly
*/
static void
zfcp_erp_timeout_handler(unsigned long data)
void zfcp_erp_timeout_handler(unsigned long data)
{
struct zfcp_erp_action *erp_action = (struct zfcp_erp_action *) data;
struct zfcp_adapter *adapter = erp_action->adapter;
@ -1934,8 +1934,7 @@ zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *erp_action, int close)
&erp_action->adapter->status);
failed_openfcp:
zfcp_erp_adapter_strategy_close_qdio(erp_action);
zfcp_erp_adapter_strategy_close_fsf(erp_action);
zfcp_close_fsf(erp_action->adapter);
failed_qdio:
out:
return retval;
@ -2040,59 +2039,6 @@ zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *erp_action)
return retval;
}
/**
* zfcp_erp_adapter_strategy_close_qdio - close qdio queues for an adapter
*/
static void
zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *erp_action)
{
int first_used;
int used_count;
struct zfcp_adapter *adapter = erp_action->adapter;
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) {
ZFCP_LOG_DEBUG("error: attempt to shut down inactive QDIO "
"queues on adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
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);
debug_text_event(adapter->erp_dbf, 3, "qdio_down2a");
while (qdio_shutdown(adapter->ccw_device,
QDIO_FLAG_CLEANUP_USING_CLEAR) == -EINPROGRESS)
msleep(1000);
debug_text_event(adapter->erp_dbf, 3, "qdio_down2b");
/*
* First we had to stop QDIO operation.
* Now it is safe to take the following actions.
*/
/* Cleanup only necessary when there are unacknowledged buffers */
if (atomic_read(&adapter->request_queue.free_count)
< QDIO_MAX_BUFFERS_PER_Q) {
first_used = (adapter->request_queue.free_index +
atomic_read(&adapter->request_queue.free_count))
% QDIO_MAX_BUFFERS_PER_Q;
used_count = QDIO_MAX_BUFFERS_PER_Q -
atomic_read(&adapter->request_queue.free_count);
zfcp_qdio_zero_sbals(adapter->request_queue.buffer,
first_used, used_count);
}
adapter->response_queue.free_index = 0;
atomic_set(&adapter->response_queue.free_count, 0);
adapter->request_queue.free_index = 0;
atomic_set(&adapter->request_queue.free_count, 0);
adapter->request_queue.distance_from_int = 0;
}
static int
zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *erp_action)
@ -2127,7 +2073,6 @@ zfcp_erp_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *erp_action)
write_lock_irq(&adapter->erp_lock);
zfcp_erp_action_to_running(erp_action);
write_unlock_irq(&adapter->erp_lock);
zfcp_erp_timeout_init(erp_action);
if (zfcp_fsf_exchange_config_data(erp_action)) {
retval = ZFCP_ERP_FAILED;
debug_text_event(adapter->erp_dbf, 5, "a_fstx_xf");
@ -2196,7 +2141,6 @@ zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *erp_action)
zfcp_erp_action_to_running(erp_action);
write_unlock_irq(&adapter->erp_lock);
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");
@ -2248,27 +2192,6 @@ zfcp_erp_adapter_strategy_open_fsf_statusread(struct zfcp_erp_action
return retval;
}
/**
* zfcp_erp_adapter_strategy_close_fsf - stop FSF operations for an adapter
*/
static void
zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
/*
* wake waiting initiators of requests,
* return SCSI commands (with error status),
* clean up all requests (synchronously)
*/
zfcp_fsf_req_dismiss_all(adapter);
/* reset FSF request sequence number */
adapter->fsf_req_seq_no = 0;
/* all ports and units are closed */
zfcp_erp_modify_adapter_status(adapter,
ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
}
/*
* function:
*
@ -2605,7 +2528,6 @@ zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *erp_action)
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_port *port = erp_action->port;
zfcp_erp_timeout_init(erp_action);
retval = zfcp_fsf_close_physical_port(erp_action);
if (retval == -ENOMEM) {
debug_text_event(adapter->erp_dbf, 5, "o_pfstc_nomem");
@ -2662,7 +2584,6 @@ zfcp_erp_port_strategy_close(struct zfcp_erp_action *erp_action)
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_port *port = erp_action->port;
zfcp_erp_timeout_init(erp_action);
retval = zfcp_fsf_close_port(erp_action);
if (retval == -ENOMEM) {
debug_text_event(adapter->erp_dbf, 5, "p_pstc_nomem");
@ -2700,7 +2621,6 @@ zfcp_erp_port_strategy_open_port(struct zfcp_erp_action *erp_action)
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_port *port = erp_action->port;
zfcp_erp_timeout_init(erp_action);
retval = zfcp_fsf_open_port(erp_action);
if (retval == -ENOMEM) {
debug_text_event(adapter->erp_dbf, 5, "p_psto_nomem");
@ -2738,7 +2658,6 @@ zfcp_erp_port_strategy_open_common_lookup(struct zfcp_erp_action *erp_action)
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_port *port = erp_action->port;
zfcp_erp_timeout_init(erp_action);
retval = zfcp_ns_gid_pn_request(erp_action);
if (retval == -ENOMEM) {
debug_text_event(adapter->erp_dbf, 5, "p_pstn_nomem");
@ -2864,7 +2783,6 @@ zfcp_erp_unit_strategy_close(struct zfcp_erp_action *erp_action)
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_unit *unit = erp_action->unit;
zfcp_erp_timeout_init(erp_action);
retval = zfcp_fsf_close_unit(erp_action);
if (retval == -ENOMEM) {
debug_text_event(adapter->erp_dbf, 5, "u_ustc_nomem");
@ -2905,7 +2823,6 @@ zfcp_erp_unit_strategy_open(struct zfcp_erp_action *erp_action)
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_unit *unit = erp_action->unit;
zfcp_erp_timeout_init(erp_action);
retval = zfcp_fsf_open_unit(erp_action);
if (retval == -ENOMEM) {
debug_text_event(adapter->erp_dbf, 5, "u_usto_nomem");
@ -2930,14 +2847,13 @@ zfcp_erp_unit_strategy_open(struct zfcp_erp_action *erp_action)
return retval;
}
static inline void
zfcp_erp_timeout_init(struct zfcp_erp_action *erp_action)
void zfcp_erp_start_timer(struct zfcp_fsf_req *fsf_req)
{
init_timer(&erp_action->timer);
erp_action->timer.function = zfcp_erp_timeout_handler;
erp_action->timer.data = (unsigned long) erp_action;
/* jiffies will be added in zfcp_fsf_req_send */
erp_action->timer.expires = ZFCP_ERP_FSFREQ_TIMEOUT;
BUG_ON(!fsf_req->erp_action);
fsf_req->timer.function = zfcp_erp_timeout_handler;
fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
fsf_req->timer.expires = jiffies + ZFCP_ERP_FSFREQ_TIMEOUT;
add_timer(&fsf_req->timer);
}
/*

13
drivers/s390/scsi/zfcp_ext.h
View File

@ -87,8 +87,8 @@ extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *,
struct fsf_qtcb_bottom_port *);
extern int zfcp_fsf_control_file(struct zfcp_adapter *, struct zfcp_fsf_req **,
u32, u32, struct zfcp_sg_list *);
extern void zfcp_fsf_request_timeout_handler(unsigned long);
extern void zfcp_fsf_scsi_er_timeout_handler(unsigned long);
extern void zfcp_fsf_start_timer(struct zfcp_fsf_req *, unsigned long);
extern void zfcp_erp_start_timer(struct zfcp_fsf_req *);
extern int zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
extern int zfcp_fsf_status_read(struct zfcp_adapter *, int);
extern int zfcp_fsf_req_create(struct zfcp_adapter *, u32, int, mempool_t *,
@ -98,8 +98,7 @@ extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *,
extern int zfcp_fsf_send_els(struct zfcp_send_els *);
extern int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *,
struct zfcp_unit *,
struct scsi_cmnd *,
struct timer_list*, int);
struct scsi_cmnd *, int, int);
extern int zfcp_fsf_req_complete(struct zfcp_fsf_req *);
extern void zfcp_fsf_incoming_els(struct zfcp_fsf_req *);
extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
@ -123,13 +122,11 @@ extern char *zfcp_get_fcp_rsp_info_ptr(struct fcp_rsp_iu *);
extern void set_host_byte(u32 *, char);
extern void set_driver_byte(u32 *, char);
extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
extern void zfcp_fsf_start_scsi_er_timer(struct zfcp_adapter *);
extern fcp_dl_t zfcp_get_fcp_dl(struct fcp_cmnd_iu *);
extern int zfcp_scsi_command_async(struct zfcp_adapter *,struct zfcp_unit *,
struct scsi_cmnd *, struct timer_list *);
extern int zfcp_scsi_command_sync(struct zfcp_unit *, struct scsi_cmnd *,
struct timer_list *);
struct scsi_cmnd *, int);
extern int zfcp_scsi_command_sync(struct zfcp_unit *, struct scsi_cmnd *, int);
extern struct fc_function_template zfcp_transport_functions;
/******************************** ERP ****************************************/

253
drivers/s390/scsi/zfcp_fsf.c
View File

@ -42,7 +42,7 @@ static inline int zfcp_fsf_req_sbal_check(
static inline int zfcp_use_one_sbal(
struct scatterlist *, int, struct scatterlist *, int);
static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int);
static int zfcp_fsf_req_send(struct zfcp_fsf_req *, struct timer_list *);
static int zfcp_fsf_req_send(struct zfcp_fsf_req *);
static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *);
static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *);
static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *);
@ -225,8 +225,10 @@ zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req)
*/
zfcp_fsf_status_read_handler(fsf_req);
goto out;
} else
} else {
del_timer(&fsf_req->timer);
zfcp_fsf_protstatus_eval(fsf_req);
}
/*
* fsf_req may be deleted due to waking up functions, so
@ -785,8 +787,7 @@ zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags)
sbale->addr = (void *) status_buffer;
sbale->length = sizeof(struct fsf_status_read_buffer);
/* start QDIO request for this FSF request */
retval = zfcp_fsf_req_send(fsf_req, NULL);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status "
"environment.\n");
@ -1112,8 +1113,8 @@ zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
struct zfcp_unit *unit, int req_flags)
{
volatile struct qdio_buffer_element *sbale;
unsigned long lock_flags;
struct zfcp_fsf_req *fsf_req = NULL;
unsigned long lock_flags;
int retval = 0;
/* setup new FSF request */
@ -1143,12 +1144,9 @@ zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
/* set handle of request which should be aborted */
fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id;
/* start QDIO request for this FSF request */
zfcp_fsf_start_scsi_er_timer(adapter);
retval = zfcp_fsf_req_send(fsf_req, NULL);
zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
del_timer(&adapter->scsi_er_timer);
ZFCP_LOG_INFO("error: Failed to send abort command request "
"on adapter %s, port 0x%016Lx, unit 0x%016Lx\n",
zfcp_get_busid_by_adapter(adapter),
@ -1184,8 +1182,6 @@ zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req)
unsigned char status_qual =
new_fsf_req->qtcb->header.fsf_status_qual.word[0];
del_timer(&new_fsf_req->adapter->scsi_er_timer);
if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
/* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */
goto skip_fsfstatus;
@ -1391,11 +1387,6 @@ zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
goto failed_req;
}
if (erp_action != NULL) {
erp_action->fsf_req = fsf_req;
fsf_req->erp_action = erp_action;
}
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
if (zfcp_use_one_sbal(ct->req, ct->req_count,
ct->resp, ct->resp_count)){
@ -1462,8 +1453,14 @@ zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
zfcp_san_dbf_event_ct_request(fsf_req);
/* start QDIO request for this FSF request */
ret = zfcp_fsf_req_send(fsf_req, ct->timer);
if (erp_action) {
erp_action->fsf_req = fsf_req;
fsf_req->erp_action = erp_action;
zfcp_erp_start_timer(fsf_req);
} else
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
ret = zfcp_fsf_req_send(fsf_req);
if (ret) {
ZFCP_LOG_DEBUG("error: initiation of CT request failed "
"(adapter %s, port 0x%016Lx)\n",
@ -1760,8 +1757,8 @@ zfcp_fsf_send_els(struct zfcp_send_els *els)
zfcp_san_dbf_event_els_request(fsf_req);
/* start QDIO request for this FSF request */
ret = zfcp_fsf_req_send(fsf_req, els->timer);
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
ret = zfcp_fsf_req_send(fsf_req);
if (ret) {
ZFCP_LOG_DEBUG("error: initiation of ELS request failed "
"(adapter %s, port d_id: 0x%08x)\n",
@ -1958,6 +1955,7 @@ int
zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
unsigned long lock_flags;
int retval = 0;
@ -1966,7 +1964,7 @@ zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
FSF_QTCB_EXCHANGE_CONFIG_DATA,
ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &(erp_action->fsf_req));
&lock_flags, &fsf_req);
if (retval < 0) {
ZFCP_LOG_INFO("error: Could not create exchange configuration "
"data request for adapter %s.\n",
@ -1974,26 +1972,26 @@ zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
goto out;
}
sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
erp_action->fsf_req->sbal_curr, 0);
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
erp_action->fsf_req->erp_action = erp_action;
erp_action->fsf_req->qtcb->bottom.config.feature_selection =
fsf_req->qtcb->bottom.config.feature_selection =
FSF_FEATURE_CFDC |
FSF_FEATURE_LUN_SHARING |
FSF_FEATURE_NOTIFICATION_LOST |
FSF_FEATURE_UPDATE_ALERT;
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req;
/* start QDIO request for this FSF request */
retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
zfcp_erp_start_timer(fsf_req);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
ZFCP_LOG_INFO
("error: Could not send exchange configuration data "
"command on the adapter %s\n",
zfcp_get_busid_by_adapter(erp_action->adapter));
zfcp_fsf_req_free(erp_action->fsf_req);
zfcp_fsf_req_free(fsf_req);
erp_action->fsf_req = NULL;
goto out;
}
@ -2223,10 +2221,9 @@ zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action,
struct fsf_qtcb_bottom_port *data)
{
volatile struct qdio_buffer_element *sbale;
int retval = 0;
unsigned long lock_flags;
struct zfcp_fsf_req *fsf_req;
struct timer_list *timer;
unsigned long lock_flags;
int retval = 0;
if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) {
ZFCP_LOG_INFO("error: exchange port data "
@ -2259,22 +2256,11 @@ zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action,
if (erp_action) {
erp_action->fsf_req = fsf_req;
fsf_req->erp_action = erp_action;
timer = &erp_action->timer;
} else {
timer = kmalloc(sizeof(struct timer_list), GFP_ATOMIC);
if (!timer) {
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
lock_flags);
zfcp_fsf_req_free(fsf_req);
return -ENOMEM;
}
init_timer(timer);
timer->function = zfcp_fsf_request_timeout_handler;
timer->data = (unsigned long) adapter;
timer->expires = ZFCP_FSF_REQUEST_TIMEOUT;
}
zfcp_erp_start_timer(fsf_req);
} else
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
retval = zfcp_fsf_req_send(fsf_req, timer);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
ZFCP_LOG_INFO("error: Could not send an exchange port data "
"command on the adapter %s\n",
@ -2282,8 +2268,6 @@ zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action,
zfcp_fsf_req_free(fsf_req);
if (erp_action)
erp_action->fsf_req = NULL;
else
kfree(timer);
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
lock_flags);
return retval;
@ -2294,9 +2278,7 @@ zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action,
if (!erp_action) {
wait_event(fsf_req->completion_wq,
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
del_timer_sync(timer);
zfcp_fsf_req_free(fsf_req);
kfree(timer);
}
return retval;
}
@ -2378,6 +2360,7 @@ int
zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
unsigned long lock_flags;
int retval = 0;
@ -2386,7 +2369,7 @@ zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
FSF_QTCB_OPEN_PORT_WITH_DID,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &(erp_action->fsf_req));
&lock_flags, &fsf_req);
if (retval < 0) {
ZFCP_LOG_INFO("error: Could not create open port request "
"for port 0x%016Lx on adapter %s.\n",
@ -2395,24 +2378,24 @@ zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
goto out;
}
sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
erp_action->fsf_req->sbal_curr, 0);
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
erp_action->fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id;
fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id;
atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status);
erp_action->fsf_req->data = (unsigned long) erp_action->port;
erp_action->fsf_req->erp_action = erp_action;
fsf_req->data = (unsigned long) erp_action->port;
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req;
/* start QDIO request for this FSF request */
retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
zfcp_erp_start_timer(fsf_req);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
ZFCP_LOG_INFO("error: Could not send open port request for "
"port 0x%016Lx on adapter %s.\n",
erp_action->port->wwpn,
zfcp_get_busid_by_adapter(erp_action->adapter));
zfcp_fsf_req_free(erp_action->fsf_req);
zfcp_fsf_req_free(fsf_req);
erp_action->fsf_req = NULL;
goto out;
}
@ -2634,6 +2617,7 @@ int
zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
unsigned long lock_flags;
int retval = 0;
@ -2642,7 +2626,7 @@ zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
FSF_QTCB_CLOSE_PORT,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &(erp_action->fsf_req));
&lock_flags, &fsf_req);
if (retval < 0) {
ZFCP_LOG_INFO("error: Could not create a close port request "
"for port 0x%016Lx on adapter %s.\n",
@ -2651,25 +2635,25 @@ zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
goto out;
}
sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
erp_action->fsf_req->sbal_curr, 0);
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status);
erp_action->fsf_req->data = (unsigned long) erp_action->port;
erp_action->fsf_req->erp_action = erp_action;
erp_action->fsf_req->qtcb->header.port_handle =
erp_action->port->handle;
fsf_req->data = (unsigned long) erp_action->port;
fsf_req->erp_action = erp_action;
fsf_req->qtcb->header.port_handle = erp_action->port->handle;
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req;
/* start QDIO request for this FSF request */
retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
zfcp_erp_start_timer(fsf_req);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
ZFCP_LOG_INFO("error: Could not send a close port request for "
"port 0x%016Lx on adapter %s.\n",
erp_action->port->wwpn,
zfcp_get_busid_by_adapter(erp_action->adapter));
zfcp_fsf_req_free(erp_action->fsf_req);
zfcp_fsf_req_free(fsf_req);
erp_action->fsf_req = NULL;
goto out;
}
@ -2766,16 +2750,17 @@ zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req)
int
zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
{
int retval = 0;
unsigned long lock_flags;
volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
unsigned long lock_flags;
int retval = 0;
/* setup new FSF request */
retval = zfcp_fsf_req_create(erp_action->adapter,
FSF_QTCB_CLOSE_PHYSICAL_PORT,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &erp_action->fsf_req);
&lock_flags, &fsf_req);
if (retval < 0) {
ZFCP_LOG_INFO("error: Could not create close physical port "
"request (adapter %s, port 0x%016Lx)\n",
@ -2785,8 +2770,7 @@ zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
goto out;
}
sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
erp_action->fsf_req->sbal_curr, 0);
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
@ -2794,20 +2778,19 @@ zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING,
&erp_action->port->status);
/* save a pointer to this port */
erp_action->fsf_req->data = (unsigned long) erp_action->port;
/* port to be closed */
erp_action->fsf_req->qtcb->header.port_handle =
erp_action->port->handle;
erp_action->fsf_req->erp_action = erp_action;
fsf_req->data = (unsigned long) erp_action->port;
fsf_req->qtcb->header.port_handle = erp_action->port->handle;
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req;
/* start QDIO request for this FSF request */
retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
zfcp_erp_start_timer(fsf_req);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
ZFCP_LOG_INFO("error: Could not send close physical port "
"request (adapter %s, port 0x%016Lx)\n",
zfcp_get_busid_by_adapter(erp_action->adapter),
erp_action->port->wwpn);
zfcp_fsf_req_free(erp_action->fsf_req);
zfcp_fsf_req_free(fsf_req);
erp_action->fsf_req = NULL;
goto out;
}
@ -2972,6 +2955,7 @@ int
zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
unsigned long lock_flags;
int retval = 0;
@ -2980,7 +2964,7 @@ zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
FSF_QTCB_OPEN_LUN,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &(erp_action->fsf_req));
&lock_flags, &fsf_req);
if (retval < 0) {
ZFCP_LOG_INFO("error: Could not create open unit request for "
"unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
@ -2990,24 +2974,22 @@ zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
goto out;
}
sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
erp_action->fsf_req->sbal_curr, 0);
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
erp_action->fsf_req->qtcb->header.port_handle =
erp_action->port->handle;
erp_action->fsf_req->qtcb->bottom.support.fcp_lun =
erp_action->unit->fcp_lun;
fsf_req->qtcb->header.port_handle = erp_action->port->handle;
fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE))
erp_action->fsf_req->qtcb->bottom.support.option =
fsf_req->qtcb->bottom.support.option =
FSF_OPEN_LUN_SUPPRESS_BOXING;
atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status);
erp_action->fsf_req->data = (unsigned long) erp_action->unit;
erp_action->fsf_req->erp_action = erp_action;
fsf_req->data = (unsigned long) erp_action->unit;
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req;
/* start QDIO request for this FSF request */
retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
zfcp_erp_start_timer(fsf_req);
retval = zfcp_fsf_req_send(erp_action->fsf_req);
if (retval) {
ZFCP_LOG_INFO("error: Could not send an open unit request "
"on the adapter %s, port 0x%016Lx for "
@ -3015,7 +2997,7 @@ zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
zfcp_get_busid_by_adapter(erp_action->adapter),
erp_action->port->wwpn,
erp_action->unit->fcp_lun);
zfcp_fsf_req_free(erp_action->fsf_req);
zfcp_fsf_req_free(fsf_req);
erp_action->fsf_req = NULL;
goto out;
}
@ -3308,6 +3290,7 @@ int
zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
unsigned long lock_flags;
int retval = 0;
@ -3316,7 +3299,7 @@ zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
FSF_QTCB_CLOSE_LUN,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &(erp_action->fsf_req));
&lock_flags, &fsf_req);
if (retval < 0) {
ZFCP_LOG_INFO("error: Could not create close unit request for "
"unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
@ -3326,27 +3309,26 @@ zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
goto out;
}
sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
erp_action->fsf_req->sbal_curr, 0);
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
erp_action->fsf_req->qtcb->header.port_handle =
erp_action->port->handle;
erp_action->fsf_req->qtcb->header.lun_handle = erp_action->unit->handle;
fsf_req->qtcb->header.port_handle = erp_action->port->handle;
fsf_req->qtcb->header.lun_handle = erp_action->unit->handle;
atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status);
erp_action->fsf_req->data = (unsigned long) erp_action->unit;
erp_action->fsf_req->erp_action = erp_action;
fsf_req->data = (unsigned long) erp_action->unit;
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req;
/* start QDIO request for this FSF request */
retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
zfcp_erp_start_timer(fsf_req);
retval = zfcp_fsf_req_send(erp_action->fsf_req);
if (retval) {
ZFCP_LOG_INFO("error: Could not send a close unit request for "
"unit 0x%016Lx on port 0x%016Lx onadapter %s.\n",
erp_action->unit->fcp_lun,
erp_action->port->wwpn,
zfcp_get_busid_by_adapter(erp_action->adapter));
zfcp_fsf_req_free(erp_action->fsf_req);
zfcp_fsf_req_free(fsf_req);
erp_action->fsf_req = NULL;
goto out;
}
@ -3499,7 +3481,7 @@ int
zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter,
struct zfcp_unit *unit,
struct scsi_cmnd * scsi_cmnd,
struct timer_list *timer, int req_flags)
int use_timer, int req_flags)
{
struct zfcp_fsf_req *fsf_req = NULL;
struct fcp_cmnd_iu *fcp_cmnd_iu;
@ -3640,11 +3622,10 @@ zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter,
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
(char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
/*
* start QDIO request for this FSF request
* covered by an SBALE)
*/
retval = zfcp_fsf_req_send(fsf_req, timer);
if (use_timer)
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
retval = zfcp_fsf_req_send(fsf_req);
if (unlikely(retval < 0)) {
ZFCP_LOG_INFO("error: Could not send FCP command request "
"on adapter %s, port 0x%016Lx, unit 0x%016Lx\n",
@ -3729,11 +3710,9 @@ zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter,
fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
fcp_cmnd_iu->task_management_flags = tm_flags;
/* start QDIO request for this FSF request */
zfcp_fsf_start_scsi_er_timer(adapter);
retval = zfcp_fsf_req_send(fsf_req, NULL);
zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
del_timer(&adapter->scsi_er_timer);
ZFCP_LOG_INFO("error: Could not send an FCP-command (task "
"management) on adapter %s, port 0x%016Lx for "
"unit LUN 0x%016Lx\n",
@ -4237,7 +4216,6 @@ zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req)
char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu);
struct zfcp_unit *unit = (struct zfcp_unit *) fsf_req->data;
del_timer(&fsf_req->adapter->scsi_er_timer);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
goto skip_fsfstatus;
@ -4306,7 +4284,6 @@ zfcp_fsf_control_file(struct zfcp_adapter *adapter,
struct zfcp_fsf_req *fsf_req;
struct fsf_qtcb_bottom_support *bottom;
volatile struct qdio_buffer_element *sbale;
struct timer_list *timer;
unsigned long lock_flags;
int req_flags = 0;
int direction;
@ -4338,12 +4315,6 @@ zfcp_fsf_control_file(struct zfcp_adapter *adapter,
goto out;
}
timer = kmalloc(sizeof(struct timer_list), GFP_KERNEL);
if (!timer) {
retval = -ENOMEM;
goto out;
}
retval = zfcp_fsf_req_create(adapter, fsf_command, req_flags,
NULL, &lock_flags, &fsf_req);
if (retval < 0) {
@ -4378,12 +4349,8 @@ zfcp_fsf_control_file(struct zfcp_adapter *adapter,
} else
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
init_timer(timer);
timer->function = zfcp_fsf_request_timeout_handler;
timer->data = (unsigned long) adapter;
timer->expires = ZFCP_FSF_REQUEST_TIMEOUT;
retval = zfcp_fsf_req_send(fsf_req, timer);
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
retval = zfcp_fsf_req_send(fsf_req);
if (retval < 0) {
ZFCP_LOG_INFO("initiation of cfdc up/download failed"
"(adapter %s)\n",
@ -4403,15 +4370,12 @@ zfcp_fsf_control_file(struct zfcp_adapter *adapter,
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
*fsf_req_ptr = fsf_req;
del_timer_sync(timer);
goto free_timer;
goto out;
free_fsf_req:
zfcp_fsf_req_free(fsf_req);
unlock_queue_lock:
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
free_timer:
kfree(timer);
out:
return retval;
}
@ -4688,7 +4652,8 @@ zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags,
adapter->req_no++;
fsf_req->req_id = adapter->req_no++;
zfcp_fsf_req_qtcb_init(fsf_req);
init_timer(&fsf_req->timer);
zfcp_fsf_req_qtcb_init(fsf_req);
/* initialize waitqueue which may be used to wait on
this request completion */
@ -4758,8 +4723,7 @@ zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags,
* returns: 0 - request transfer succesfully started
* !0 - start of request transfer failed
*/
static int
zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
static int zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_adapter *adapter;
struct zfcp_qdio_queue *req_queue;
@ -4787,12 +4751,6 @@ zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
inc_seq_no = (fsf_req->qtcb != NULL);
/* figure out expiration time of timeout and start timeout */
if (unlikely(timer)) {
timer->expires += jiffies;
add_timer(timer);
}
ZFCP_LOG_TRACE("request queue of adapter %s: "
"next free SBAL is %i, %i free SBALs\n",
zfcp_get_busid_by_adapter(adapter),
@ -4829,12 +4787,7 @@ zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
if (unlikely(retval)) {
/* Queues are down..... */
retval = -EIO;
/*
* FIXME(potential race):
* timer might be expired (absolutely unlikely)
*/
if (timer)
del_timer(timer);
del_timer(&fsf_req->timer);
spin_lock(&adapter->req_list_lock);
zfcp_reqlist_remove(adapter, fsf_req->req_id);
spin_unlock(&adapter->req_list_lock);

25
drivers/s390/scsi/zfcp_scsi.c
View File

@ -231,7 +231,7 @@ zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
*/
int
zfcp_scsi_command_async(struct zfcp_adapter *adapter, struct zfcp_unit *unit,
struct scsi_cmnd *scpnt, struct timer_list *timer)
struct scsi_cmnd *scpnt, int use_timer)
{
int tmp;
int retval;
@ -267,7 +267,7 @@ zfcp_scsi_command_async(struct zfcp_adapter *adapter, struct zfcp_unit *unit,
goto out;
}
tmp = zfcp_fsf_send_fcp_command_task(adapter, unit, scpnt, timer,
tmp = zfcp_fsf_send_fcp_command_task(adapter, unit, scpnt, use_timer,
ZFCP_REQ_AUTO_CLEANUP);
if (unlikely(tmp < 0)) {
@ -291,21 +291,22 @@ zfcp_scsi_command_sync_handler(struct scsi_cmnd *scpnt)
* zfcp_scsi_command_sync - send a SCSI command and wait for completion
* @unit: unit where command is sent to
* @scpnt: scsi command to be sent
* @timer: timer to be started if request is successfully initiated
* @use_timer: indicates whether timer should be setup or not
* Return: 0
*
* Errors are indicated in scpnt->result
*/
int
zfcp_scsi_command_sync(struct zfcp_unit *unit, struct scsi_cmnd *scpnt,
struct timer_list *timer)
int use_timer)
{
int ret;
DECLARE_COMPLETION(wait);
scpnt->SCp.ptr = (void *) &wait; /* silent re-use */
scpnt->scsi_done = zfcp_scsi_command_sync_handler;
ret = zfcp_scsi_command_async(unit->port->adapter, unit, scpnt, timer);
ret = zfcp_scsi_command_async(unit->port->adapter, unit, scpnt,
use_timer);
if (ret == 0)
wait_for_completion(&wait);
@ -341,7 +342,7 @@ zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
unit = (struct zfcp_unit *) scpnt->device->hostdata;
return zfcp_scsi_command_async(adapter, unit, scpnt, NULL);
return zfcp_scsi_command_async(adapter, unit, scpnt, 0);
}
static struct zfcp_unit *
@ -538,8 +539,6 @@ zfcp_task_management_function(struct zfcp_unit *unit, u8 tm_flags,
/**
* zfcp_scsi_eh_host_reset_handler - handler for host and bus reset
*
* If ERP is already running it will be stopped.
*/
int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
@ -638,16 +637,6 @@ zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter)
return;
}
void
zfcp_fsf_start_scsi_er_timer(struct zfcp_adapter *adapter)
{
adapter->scsi_er_timer.function = zfcp_fsf_scsi_er_timeout_handler;
adapter->scsi_er_timer.data = (unsigned long) adapter;
adapter->scsi_er_timer.expires = jiffies + ZFCP_SCSI_ER_TIMEOUT;
add_timer(&adapter->scsi_er_timer);
}
/*
* Support functions for FC transport class
*/