-/*
- *
- * 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 program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+/*
+ * 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
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#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 void zfcp_erp_adisc_handler(unsigned long);
-static int zfcp_erp_adapter_reopen_internal(struct zfcp_adapter *, int);
-static int zfcp_erp_port_forced_reopen_internal(struct zfcp_port *, int);
-static int zfcp_erp_port_reopen_internal(struct zfcp_port *, int);
-static int zfcp_erp_unit_reopen_internal(struct zfcp_unit *, int);
+static int zfcp_erp_adapter_reopen_internal(struct zfcp_adapter *, int, u8,
+ void *);
+static int zfcp_erp_port_forced_reopen_internal(struct zfcp_port *, int, u8,
+ void *);
+static int zfcp_erp_port_reopen_internal(struct zfcp_port *, int, u8, void *);
+static int zfcp_erp_unit_reopen_internal(struct zfcp_unit *, int, u8, void *);
-static int zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *, int);
-static int zfcp_erp_unit_reopen_all_internal(struct zfcp_port *, int);
+static int zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *, int, u8,
+ void *);
+static int zfcp_erp_unit_reopen_all_internal(struct zfcp_port *, int, u8,
+ void *);
static void zfcp_erp_adapter_block(struct zfcp_adapter *, int);
static void zfcp_erp_adapter_unblock(struct zfcp_adapter *);
static int zfcp_erp_strategy_statechange(int, u32, struct zfcp_adapter *,
struct zfcp_port *,
struct zfcp_unit *, int);
-static inline int zfcp_erp_strategy_statechange_detected(atomic_t *, u32);
+static int zfcp_erp_strategy_statechange_detected(atomic_t *, u32);
static int zfcp_erp_strategy_followup_actions(int, struct zfcp_adapter *,
struct zfcp_port *,
struct zfcp_unit *, 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 int zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *);
-static int 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_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *);
+static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_open_fsf_statusread(
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_adapter(struct zfcp_adapter *);
+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 *);
+ struct zfcp_port *, struct zfcp_unit *,
+ u8 id, void *ref);
static int zfcp_erp_action_dequeue(struct zfcp_erp_action *);
static void zfcp_erp_action_cleanup(int, struct zfcp_adapter *,
struct zfcp_port *, struct zfcp_unit *,
static void zfcp_erp_action_ready(struct zfcp_erp_action *);
static int zfcp_erp_action_exists(struct zfcp_erp_action *);
-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_action_to_ready(struct zfcp_erp_action *);
+static 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_fsf_request_timeout_handler - called if a request timed out
- * @data: pointer to adapter for handler function
- *
- * 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.
+ * zfcp_close_qdio - close qdio queues for an adapter
*/
-void
-zfcp_fsf_request_timeout_handler(unsigned long data)
+static void zfcp_close_qdio(struct zfcp_adapter *adapter)
{
- struct zfcp_adapter *adapter;
+ struct zfcp_qdio_queue *req_queue;
+ int first, count;
+
+ if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status))
+ return;
- adapter = (struct zfcp_adapter *) data;
+ /* 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);
- zfcp_erp_adapter_reopen(adapter, 0);
+ while (qdio_shutdown(adapter->ccw_device,
+ QDIO_FLAG_CLEANUP_USING_CLEAR) == -EINPROGRESS)
+ ssleep(1);
+
+ /* 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);
}
-/*
- * function: zfcp_fsf_scsi_er_timeout_handler
+/**
+ * zfcp_close_fsf - stop FSF operations for an adapter
*
- * 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
+ * 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).
*/
-void
-zfcp_fsf_scsi_er_timeout_handler(unsigned long data)
+static void zfcp_close_fsf(struct zfcp_adapter *adapter)
{
- struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
+ /* 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, 24, NULL,
+ ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
+}
- 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);
+/**
+ * zfcp_fsf_request_timeout_handler - called if a request timed out
+ * @data: pointer to adapter for handler function
+ *
+ * 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.
+ */
+static void zfcp_fsf_request_timeout_handler(unsigned long data)
+{
+ struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
+ zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62,
+ NULL);
+}
- return;
+void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, unsigned long timeout)
+{
+ fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
+ fsf_req->timer.data = (unsigned long) fsf_req->adapter;
+ fsf_req->timer.expires = jiffies + timeout;
+ add_timer(&fsf_req->timer);
}
/*
- * function:
+ * function:
*
* purpose: called if an adapter failed,
* initiates adapter recovery which is done
* asynchronously
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
-int
-zfcp_erp_adapter_reopen_internal(struct zfcp_adapter *adapter, int clear_mask)
+static int zfcp_erp_adapter_reopen_internal(struct zfcp_adapter *adapter,
+ int clear_mask, u8 id, void *ref)
{
int retval;
- debug_text_event(adapter->erp_dbf, 5, "a_ro");
ZFCP_LOG_DEBUG("reopen adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status)) {
ZFCP_LOG_DEBUG("skipped reopen of failed adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
- debug_text_event(adapter->erp_dbf, 5, "a_ro_f");
/* ensure propagation of failed status to new devices */
- zfcp_erp_adapter_failed(adapter);
+ zfcp_erp_adapter_failed(adapter, 13, NULL);
retval = -EIO;
goto out;
}
retval = zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER,
- adapter, NULL, NULL);
+ adapter, NULL, NULL, id, ref);
out:
return retval;
}
/*
- * function:
+ * function:
*
* 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
-zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear_mask)
+int zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear_mask,
+ u8 id, void *ref)
{
int retval;
unsigned long flags;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
- retval = zfcp_erp_adapter_reopen_internal(adapter, clear_mask);
+ retval = zfcp_erp_adapter_reopen_internal(adapter, clear_mask, id, ref);
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
-int
-zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear_mask)
+int zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear_mask,
+ u8 id, void *ref)
{
int retval;
retval = zfcp_erp_adapter_reopen(adapter,
ZFCP_STATUS_COMMON_RUNNING |
ZFCP_STATUS_COMMON_ERP_FAILED |
- clear_mask);
+ clear_mask, id, ref);
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
-int
-zfcp_erp_port_shutdown(struct zfcp_port *port, int clear_mask)
+int zfcp_erp_port_shutdown(struct zfcp_port *port, int clear_mask, u8 id,
+ void *ref)
{
int retval;
retval = zfcp_erp_port_reopen(port,
ZFCP_STATUS_COMMON_RUNNING |
ZFCP_STATUS_COMMON_ERP_FAILED |
- clear_mask);
+ clear_mask, id, ref);
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
-int
-zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear_mask)
+int zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear_mask, u8 id,
+ void *ref)
{
int retval;
retval = zfcp_erp_unit_reopen(unit,
ZFCP_STATUS_COMMON_RUNNING |
ZFCP_STATUS_COMMON_ERP_FAILED |
- clear_mask);
+ clear_mask, id, ref);
return retval;
}
* zfcp_erp_adisc - send ADISC ELS command
* @port: port structure
*/
-int
+static int
zfcp_erp_adisc(struct zfcp_port *port)
{
struct zfcp_adapter *adapter = port->adapter;
struct zfcp_ls_adisc *adisc;
void *address = NULL;
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);
if (send_els->req == NULL)
goto nomem;
- memset(send_els->req, 0, sizeof(*send_els->req));
+ sg_init_table(send_els->req, 1);
send_els->resp = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
if (send_els->resp == NULL)
goto nomem;
- memset(send_els->resp, 0, sizeof(*send_els->resp));
+ sg_init_table(send_els->resp, 1);
address = (void *) get_zeroed_page(GFP_ATOMIC);
if (address == NULL)
goto nomem;
- zfcp_address_to_sg(address, send_els->req);
+ zfcp_address_to_sg(address, send_els->req, sizeof(struct zfcp_ls_adisc));
address += PAGE_SIZE >> 1;
- zfcp_address_to_sg(address, send_els->resp);
+ zfcp_address_to_sg(address, send_els->resp, sizeof(struct zfcp_ls_adisc_acc));
send_els->req_count = send_els->resp_count = 1;
send_els->adapter = adapter;
adisc = zfcp_sg_to_address(send_els->req);
send_els->ls_code = adisc->code = ZFCP_LS_ADISC;
- send_els->req->length = sizeof(struct zfcp_ls_adisc);
- send_els->resp->length = sizeof(struct zfcp_ls_adisc_acc);
-
/* 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;
- ZFCP_LOG_INFO("ADISC request from s_id 0x%08x to d_id 0x%08x "
+ 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%06x to d_id 0x%06x "
"(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,
+ "hard_nport_id=0x%06x, nport_id=0x%06x)\n",
+ adisc->nport_id, send_els->d_id, (wwn_t) adisc->wwpn,
(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,
+ "0x%06x on adapter %s\n", send_els->d_id,
zfcp_get_busid_by_adapter(adapter));
- del_timer(send_els->timer);
goto freemem;
}
retval = -ENOMEM;
freemem:
if (address != NULL)
- __free_pages(send_els->req->page, 0);
+ __free_pages(sg_page(send_els->req), 0);
if (send_els != NULL) {
- kfree(send_els->timer);
kfree(send_els->req);
kfree(send_els->resp);
kfree(send_els);
*
* If ADISC failed (LS_RJT or timed out) forced reopen of the port is triggered.
*/
-void
+static void
zfcp_erp_adisc_handler(unsigned long data)
{
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;
-
- del_timer(send_els->timer);
-
adapter = send_els->adapter;
port = send_els->port;
d_id = send_els->d_id;
if (send_els->status != 0) {
ZFCP_LOG_NORMAL("ELS request rejected/timed out, "
"force physical port reopen "
- "(adapter %s, port d_id=0x%08x)\n",
+ "(adapter %s, port d_id=0x%06x)\n",
zfcp_get_busid_by_adapter(adapter), d_id);
- debug_text_event(adapter->erp_dbf, 3, "forcreop");
- if (zfcp_erp_port_forced_reopen(port, 0))
+ if (zfcp_erp_port_forced_reopen(port, 0, 63, NULL))
ZFCP_LOG_NORMAL("failed reopen of port "
"(adapter %s, wwpn=0x%016Lx)\n",
zfcp_get_busid_by_port(port),
adisc = zfcp_sg_to_address(send_els->resp);
- 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);
+ ZFCP_LOG_INFO("ADISC response from d_id 0x%06x to s_id "
+ "0x%06x (wwpn=0x%016Lx, wwnn=0x%016Lx, "
+ "hard_nport_id=0x%06x, nport_id=0x%06x)\n",
+ 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)
"adisc_resp_wwpn=0x%016Lx)\n",
zfcp_get_busid_by_port(port),
port->wwpn, (wwn_t) adisc->wwpn);
- if (zfcp_erp_port_reopen(port, 0))
+ if (zfcp_erp_port_reopen(port, 0, 64, NULL))
ZFCP_LOG_NORMAL("failed reopen of port "
"(adapter %s, wwpn=0x%016Lx)\n",
zfcp_get_busid_by_port(port),
out:
zfcp_port_put(port);
- __free_pages(send_els->req->page, 0);
- kfree(send_els->timer);
+ __free_pages(sg_page(send_els->req), 0);
kfree(send_els->req);
kfree(send_els->resp);
kfree(send_els);
zfcp_port_get(port);
retval = zfcp_erp_adisc(port);
- if (retval != 0) {
+ if (retval != 0 && retval != -EBUSY) {
zfcp_port_put(port);
ZFCP_LOG_NORMAL("reopen needed for port 0x%016Lx "
"on adapter %s\n ", port->wwpn,
zfcp_get_busid_by_port(port));
- retval = zfcp_erp_port_forced_reopen(port, 0);
+ retval = zfcp_erp_port_forced_reopen(port, 0, 65, NULL);
if (retval != 0) {
ZFCP_LOG_NORMAL("reopen of remote port 0x%016Lx "
"on adapter %s failed\n", port->wwpn,
/*
- * function:
+ * function:
*
* purpose: called if a port failed to be opened normally
* 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
-zfcp_erp_port_forced_reopen_internal(struct zfcp_port *port, int clear_mask)
+static int zfcp_erp_port_forced_reopen_internal(struct zfcp_port *port,
+ int clear_mask, u8 id,
+ void *ref)
{
int retval;
- struct zfcp_adapter *adapter = port->adapter;
-
- debug_text_event(adapter->erp_dbf, 5, "pf_ro");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
ZFCP_LOG_DEBUG("forced reopen of port 0x%016Lx on adapter %s\n",
port->wwpn, zfcp_get_busid_by_port(port));
ZFCP_LOG_DEBUG("skipped forced reopen of failed port 0x%016Lx "
"on adapter %s\n", port->wwpn,
zfcp_get_busid_by_port(port));
- debug_text_event(adapter->erp_dbf, 5, "pf_ro_f");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
retval = -EIO;
goto out;
}
retval = zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT_FORCED,
- port->adapter, port, NULL);
+ port->adapter, port, NULL, id, ref);
out:
return retval;
}
/*
- * function:
+ * function:
*
* 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
-zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear_mask)
+int zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear_mask, u8 id,
+ void *ref)
{
int retval;
unsigned long flags;
adapter = port->adapter;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
- retval = zfcp_erp_port_forced_reopen_internal(port, clear_mask);
+ retval = zfcp_erp_port_forced_reopen_internal(port, clear_mask, id,
+ ref);
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
/*
- * function:
+ * function:
*
* purpose: called if a port is to be opened
* initiates Reopen recovery which is done
* asynchronously
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
-static int
-zfcp_erp_port_reopen_internal(struct zfcp_port *port, int clear_mask)
+static int zfcp_erp_port_reopen_internal(struct zfcp_port *port, int clear_mask,
+ u8 id, void *ref)
{
int retval;
- struct zfcp_adapter *adapter = port->adapter;
-
- debug_text_event(adapter->erp_dbf, 5, "p_ro");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
ZFCP_LOG_DEBUG("reopen of port 0x%016Lx on adapter %s\n",
port->wwpn, zfcp_get_busid_by_port(port));
ZFCP_LOG_DEBUG("skipped reopen of failed port 0x%016Lx "
"on adapter %s\n", port->wwpn,
zfcp_get_busid_by_port(port));
- debug_text_event(adapter->erp_dbf, 5, "p_ro_f");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
/* ensure propagation of failed status to new devices */
- zfcp_erp_port_failed(port);
+ zfcp_erp_port_failed(port, 14, NULL);
retval = -EIO;
goto out;
}
retval = zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT,
- port->adapter, port, NULL);
+ port->adapter, port, NULL, id, ref);
out:
return retval;
* correct locking. An error recovery task is initiated to do the reopen.
* To wait for the completion of the reopen zfcp_erp_wait should be used.
*/
-int
-zfcp_erp_port_reopen(struct zfcp_port *port, int clear_mask)
+int zfcp_erp_port_reopen(struct zfcp_port *port, int clear_mask, u8 id,
+ void *ref)
{
int retval;
unsigned long flags;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
- retval = zfcp_erp_port_reopen_internal(port, clear_mask);
+ retval = zfcp_erp_port_reopen_internal(port, clear_mask, id, ref);
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
/*
- * function:
+ * function:
*
* purpose: called if a unit is to be opened
* initiates Reopen recovery which is done
* asynchronously
*
- * returns: 0 - initiated action succesfully
+ * returns: 0 - initiated action successfully
* <0 - failed to initiate action
*/
-static int
-zfcp_erp_unit_reopen_internal(struct zfcp_unit *unit, int clear_mask)
+static int zfcp_erp_unit_reopen_internal(struct zfcp_unit *unit, int clear_mask,
+ u8 id, void *ref)
{
int retval;
struct zfcp_adapter *adapter = unit->port->adapter;
- debug_text_event(adapter->erp_dbf, 5, "u_ro");
- debug_event(adapter->erp_dbf, 5, &unit->fcp_lun, sizeof (fcp_lun_t));
ZFCP_LOG_DEBUG("reopen of unit 0x%016Lx on port 0x%016Lx "
"on adapter %s\n", unit->fcp_lun,
unit->port->wwpn, zfcp_get_busid_by_unit(unit));
"on port 0x%016Lx on adapter %s\n",
unit->fcp_lun, unit->port->wwpn,
zfcp_get_busid_by_unit(unit));
- debug_text_event(adapter->erp_dbf, 5, "u_ro_f");
- debug_event(adapter->erp_dbf, 5, &unit->fcp_lun,
- sizeof (fcp_lun_t));
retval = -EIO;
goto out;
}
retval = zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_UNIT,
- unit->port->adapter, unit->port, unit);
+ adapter, unit->port, unit, id, ref);
out:
return retval;
}
* locking. An error recovery task is initiated to do the reopen.
* To wait for the completion of the reopen zfcp_erp_wait should be used.
*/
-int
-zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear_mask)
+int zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear_mask, u8 id,
+ void *ref)
{
int retval;
unsigned long flags;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
- retval = zfcp_erp_unit_reopen_internal(unit, clear_mask);
+ retval = zfcp_erp_unit_reopen_internal(unit, clear_mask, id, ref);
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
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,
+ zfcp_erp_modify_adapter_status(adapter, 15, NULL,
ZFCP_STATUS_COMMON_UNBLOCKED |
clear_mask, ZFCP_CLEAR);
}
+/* FIXME: isn't really atomic */
/*
- * function:
- *
- * purpose: enable I/O
- *
- * returns:
+ * returns the mask which has not been set so far, i.e.
+ * 0 if no bit has been changed, !0 if some bit has been changed
*/
-static void
-zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
+static int atomic_test_and_set_mask(unsigned long mask, atomic_t *v)
+{
+ int changed_bits = (atomic_read(v) /*XOR*/^ mask) & mask;
+ atomic_set_mask(mask, v);
+ return changed_bits;
+}
+
+/* FIXME: isn't really atomic */
+/*
+ * returns the mask which has not been cleared so far, i.e.
+ * 0 if no bit has been changed, !0 if some bit has been changed
+ */
+static int atomic_test_and_clear_mask(unsigned long mask, atomic_t *v)
{
- debug_text_event(adapter->erp_dbf, 6, "a_ubl");
- atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status);
+ int changed_bits = atomic_read(v) & mask;
+ atomic_clear_mask(mask, v);
+ return changed_bits;
+}
+
+/**
+ * zfcp_erp_adapter_unblock - mark adapter as unblocked, allow scsi requests
+ */
+static void zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
+{
+ if (atomic_test_and_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
+ &adapter->status))
+ zfcp_rec_dbf_event_adapter(16, NULL, adapter);
}
/*
- * function:
+ * function:
*
* purpose: disable I/O,
* return any open requests and clean them up,
static void
zfcp_erp_port_block(struct zfcp_port *port, int clear_mask)
{
- struct zfcp_adapter *adapter = port->adapter;
-
- debug_text_event(adapter->erp_dbf, 6, "p_bl");
- debug_event(adapter->erp_dbf, 6, &port->wwpn, sizeof (wwn_t));
- zfcp_erp_modify_port_status(port,
+ zfcp_erp_modify_port_status(port, 17, NULL,
ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
ZFCP_CLEAR);
}
/*
- * function:
+ * function:
*
* purpose: enable I/O
*
static void
zfcp_erp_port_unblock(struct zfcp_port *port)
{
- struct zfcp_adapter *adapter = port->adapter;
-
- debug_text_event(adapter->erp_dbf, 6, "p_ubl");
- debug_event(adapter->erp_dbf, 6, &port->wwpn, sizeof (wwn_t));
- atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status);
+ if (atomic_test_and_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
+ &port->status))
+ zfcp_rec_dbf_event_port(18, NULL, port);
}
/*
- * function:
+ * function:
*
* purpose: disable I/O,
* return any open requests and clean them up,
static void
zfcp_erp_unit_block(struct zfcp_unit *unit, int clear_mask)
{
- struct zfcp_adapter *adapter = unit->port->adapter;
-
- debug_text_event(adapter->erp_dbf, 6, "u_bl");
- debug_event(adapter->erp_dbf, 6, &unit->fcp_lun, sizeof (fcp_lun_t));
- zfcp_erp_modify_unit_status(unit,
+ zfcp_erp_modify_unit_status(unit, 19, NULL,
ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
ZFCP_CLEAR);
}
/*
- * function:
+ * function:
*
* purpose: enable I/O
*
static void
zfcp_erp_unit_unblock(struct zfcp_unit *unit)
{
- struct zfcp_adapter *adapter = unit->port->adapter;
-
- debug_text_event(adapter->erp_dbf, 6, "u_ubl");
- debug_event(adapter->erp_dbf, 6, &unit->fcp_lun, sizeof (fcp_lun_t));
- atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status);
+ if (atomic_test_and_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
+ &unit->status))
+ zfcp_rec_dbf_event_unit(20, NULL, unit);
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static void
zfcp_erp_action_ready(struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
- debug_text_event(adapter->erp_dbf, 4, "a_ar");
- debug_event(adapter->erp_dbf, 4, &erp_action->action, sizeof (int));
-
zfcp_erp_action_to_ready(erp_action);
up(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread(2, adapter, 0);
}
/*
- * function:
+ * function:
*
* purpose:
*
* and does appropriate preparations (dismiss fsf request, ...)
*
* locks: called under erp_lock (disabled interrupts)
- *
- * returns: 0
*/
-static int
+static void
zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *erp_action)
{
- int retval = 0;
- struct zfcp_fsf_req *fsf_req = NULL;
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_find_safe(adapter, erp_action->fsf_req) &&
+ erp_action->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,
- "a_ca_disreq");
- fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
+ erp_action->fsf_req->status |=
+ ZFCP_STATUS_FSFREQ_DISMISSED;
+ zfcp_rec_dbf_event_action(142, erp_action);
}
if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
+ zfcp_rec_dbf_event_action(143, erp_action);
ZFCP_LOG_NORMAL("error: erp step timed out "
"(action=%d, fsf_req=%p)\n ",
erp_action->action,
* then keep it running asynchronously and don't mess
* with the association of erp_action and fsf_req.
*/
- if (fsf_req->status & (ZFCP_STATUS_FSFREQ_COMPLETED |
+ if (erp_action->fsf_req->status &
+ (ZFCP_STATUS_FSFREQ_COMPLETED |
ZFCP_STATUS_FSFREQ_DISMISSED)) {
/* forget about association between fsf_req
and erp_action */
- fsf_req->erp_action = NULL;
erp_action->fsf_req = NULL;
}
} else {
- debug_text_event(adapter->erp_dbf, 3, "a_ca_gonereq");
/*
* even if this fsf_req has gone, forget about
* association between erp_action and fsf_req
*/
erp_action->fsf_req = NULL;
}
- spin_unlock(&adapter->fsf_req_list_lock);
- } else
- debug_text_event(adapter->erp_dbf, 3, "a_ca_noreq");
-
- return retval;
+ spin_unlock(&adapter->req_list_lock);
+ }
}
-/*
- * 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) {
- 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);
- 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_memwait_handler(unsigned long data)
{
struct zfcp_erp_action *erp_action = (struct zfcp_erp_action *) data;
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- debug_text_event(adapter->erp_dbf, 2, "a_mwh");
- debug_event(adapter->erp_dbf, 2, &erp_action->action, sizeof (int));
zfcp_erp_async_handler(erp_action, 0);
}
* action gets an appropriate flag and will be processed
* accordingly
*/
-static void
-zfcp_erp_timeout_handler(unsigned long data)
+static 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;
-
- debug_text_event(adapter->erp_dbf, 2, "a_th");
- debug_event(adapter->erp_dbf, 2, &erp_action->action, sizeof (int));
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_text_event(adapter->erp_dbf, 2, "a_adis");
- debug_event(adapter->erp_dbf, 2, &erp_action->action, sizeof (int));
-
- zfcp_erp_async_handler_nolock(erp_action, ZFCP_STATUS_ERP_DISMISSED);
-
- return 0;
+ erp_action->status |= ZFCP_STATUS_ERP_DISMISSED;
+ if (zfcp_erp_action_exists(erp_action) == ZFCP_ERP_ACTION_RUNNING)
+ zfcp_erp_action_ready(erp_action);
}
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 "
"adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
- debug_text_event(adapter->erp_dbf, 5, "a_thset_fail");
} else {
wait_event(adapter->erp_thread_wqh,
atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP,
&adapter->status));
- debug_text_event(adapter->erp_dbf, 5, "a_thset_ok");
}
return (retval < 0);
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns:
*
atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status);
up(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread(2, adapter, 1);
wait_event(adapter->erp_thread_wqh,
!atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP,
atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL,
&adapter->status);
- debug_text_event(adapter->erp_dbf, 5, "a_thki_ok");
-
return retval;
}
/* Block all signals */
siginitsetinv(¤t->blocked, 0);
atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
- debug_text_event(adapter->erp_dbf, 5, "a_th_run");
wake_up(&adapter->erp_thread_wqh);
while (!atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL,
&adapter->status)) {
write_lock_irqsave(&adapter->erp_lock, flags);
- next = adapter->erp_ready_head.prev;
+ next = adapter->erp_ready_head.next;
write_unlock_irqrestore(&adapter->erp_lock, flags);
if (next != &adapter->erp_ready_head) {
* no action in 'ready' queue to be processed and
* thread is not to be killed
*/
+ zfcp_rec_dbf_event_thread(4, adapter, 1);
down_interruptible(&adapter->erp_ready_sem);
- debug_text_event(adapter->erp_dbf, 5, "a_th_woken");
+ zfcp_rec_dbf_event_thread(5, adapter, 1);
}
atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
- debug_text_event(adapter->erp_dbf, 5, "a_th_stop");
wake_up(&adapter->erp_thread_wqh);
return 0;
}
/*
- * function:
+ * function:
*
* purpose: drives single error recovery action and schedules higher and
* subordinate actions, if necessary
/* dequeue dismissed action and leave, if required */
retval = zfcp_erp_strategy_check_action(erp_action, retval);
if (retval == ZFCP_ERP_DISMISSED) {
- debug_text_event(adapter->erp_dbf, 4, "a_st_dis1");
goto unlock;
}
/*
* check for dismissed status again to avoid follow-up actions,
- * failing of targets and so on for dismissed actions
+ * failing of targets and so on for dismissed actions,
+ * we go through down() here because there has been an up()
*/
- retval = zfcp_erp_strategy_check_action(erp_action, retval);
+ if (erp_action->status & ZFCP_STATUS_ERP_DISMISSED)
+ retval = ZFCP_ERP_CONTINUES;
switch (retval) {
- case ZFCP_ERP_DISMISSED:
- /* leave since this action has ridden to its ancestors */
- debug_text_event(adapter->erp_dbf, 6, "a_st_dis2");
- goto unlock;
case ZFCP_ERP_NOMEM:
/* no memory to continue immediately, let it sleep */
if (!(erp_action->status & ZFCP_STATUS_ERP_LOWMEM)) {
element was timed out.
*/
if (adapter->erp_total_count == adapter->erp_low_mem_count) {
- debug_text_event(adapter->erp_dbf, 3, "a_st_lowmem");
ZFCP_LOG_NORMAL("error: no mempool elements available, "
"restarting I/O on adapter %s "
"to free mempool\n",
zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_reopen_internal(adapter, 0);
+ zfcp_erp_adapter_reopen_internal(adapter, 0, 66, NULL);
} else {
- debug_text_event(adapter->erp_dbf, 2, "a_st_memw");
retval = zfcp_erp_strategy_memwait(erp_action);
}
goto unlock;
case ZFCP_ERP_CONTINUES:
/* leave since this action runs asynchronously */
- debug_text_event(adapter->erp_dbf, 6, "a_st_cont");
if (erp_action->status & ZFCP_STATUS_ERP_LOWMEM) {
--adapter->erp_low_mem_count;
erp_action->status &= ~ZFCP_STATUS_ERP_LOWMEM;
/*
* put this target through the erp mill again if someone has
- * requested to change the status of a target being online
+ * requested to change the status of a target being online
* to offline or the other way around
* (old retval is preserved if nothing has to be done here)
*/
* action is repeated in order to process state change
*/
if (retval == ZFCP_ERP_EXIT) {
- debug_text_event(adapter->erp_dbf, 2, "a_st_exit");
goto unlock;
}
unlock:
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
-
+
if (retval != ZFCP_ERP_CONTINUES)
zfcp_erp_action_cleanup(action, adapter, port, unit, retval);
if (retval != ZFCP_ERP_DISMISSED)
zfcp_erp_strategy_check_queues(adapter);
- debug_text_event(adapter->erp_dbf, 6, "a_st_done");
-
return retval;
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_DISMISSED - if action has been dismissed
* retval - otherwise
static int
zfcp_erp_strategy_check_action(struct zfcp_erp_action *erp_action, int retval)
{
- struct zfcp_adapter *adapter = erp_action->adapter;
-
zfcp_erp_strategy_check_fsfreq(erp_action);
- debug_event(adapter->erp_dbf, 5, &erp_action->action, sizeof (int));
if (erp_action->status & ZFCP_STATUS_ERP_DISMISSED) {
- debug_text_event(adapter->erp_dbf, 3, "a_stcd_dis");
zfcp_erp_action_dequeue(erp_action);
retval = ZFCP_ERP_DISMISSED;
- } else
- debug_text_event(adapter->erp_dbf, 5, "a_stcd_nodis");
+ }
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_do_action(struct zfcp_erp_action *erp_action)
{
int retval = ZFCP_ERP_FAILED;
- struct zfcp_adapter *adapter = erp_action->adapter;
/*
* try to execute/continue action as far as possible,
* note: no lock in subsequent strategy routines
* (this allows these routine to call schedule, e.g.
* kmalloc with such flags or qdio_initialize & friends)
- * Note: in case of timeout, the seperate strategies will fail
+ * Note: in case of timeout, the separate strategies will fail
* anyhow. No need for a special action. Even worse, a nameserver
* failure would not wake up waiting ports without the call.
*/
break;
default:
- debug_text_exception(adapter->erp_dbf, 1, "a_stda_bug");
- debug_event(adapter->erp_dbf, 1, &erp_action->action,
- sizeof (int));
ZFCP_LOG_NORMAL("bug: unknown erp action requested on "
"adapter %s (action=%d)\n",
zfcp_get_busid_by_adapter(erp_action->adapter),
}
/*
- * function:
+ * function:
*
* purpose: triggers retry of this action after a certain amount of time
* by means of timer provided by erp_action
zfcp_erp_strategy_memwait(struct zfcp_erp_action *erp_action)
{
int retval = ZFCP_ERP_CONTINUES;
- struct zfcp_adapter *adapter = erp_action->adapter;
- debug_text_event(adapter->erp_dbf, 6, "a_mwinit");
- debug_event(adapter->erp_dbf, 6, &erp_action->action, sizeof (int));
init_timer(&erp_action->timer);
erp_action->timer.function = zfcp_erp_memwait_handler;
erp_action->timer.data = (unsigned long) erp_action;
return retval;
}
-/*
+/*
* function: zfcp_erp_adapter_failed
*
* purpose: sets the adapter and all underlying devices to ERP_FAILED
*
*/
void
-zfcp_erp_adapter_failed(struct zfcp_adapter *adapter)
+zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, u8 id, void *ref)
{
- zfcp_erp_modify_adapter_status(adapter,
+ zfcp_erp_modify_adapter_status(adapter, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
ZFCP_LOG_NORMAL("adapter erp failed on adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
- debug_text_event(adapter->erp_dbf, 2, "a_afail");
}
-/*
+/*
* function: zfcp_erp_port_failed
*
* purpose: sets the port and all underlying devices to ERP_FAILED
*
*/
void
-zfcp_erp_port_failed(struct zfcp_port *port)
+zfcp_erp_port_failed(struct zfcp_port *port, u8 id, void *ref)
{
- zfcp_erp_modify_port_status(port,
+ zfcp_erp_modify_port_status(port, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
if (atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status))
ZFCP_LOG_NORMAL("port erp failed (adapter %s, "
- "port d_id=0x%08x)\n",
+ "port d_id=0x%06x)\n",
zfcp_get_busid_by_port(port), port->d_id);
else
ZFCP_LOG_NORMAL("port erp failed (adapter %s, wwpn=0x%016Lx)\n",
zfcp_get_busid_by_port(port), port->wwpn);
-
- debug_text_event(port->adapter->erp_dbf, 2, "p_pfail");
- debug_event(port->adapter->erp_dbf, 2, &port->wwpn, sizeof (wwn_t));
}
-/*
+/*
* function: zfcp_erp_unit_failed
*
* purpose: sets the unit to ERP_FAILED
*
*/
void
-zfcp_erp_unit_failed(struct zfcp_unit *unit)
+zfcp_erp_unit_failed(struct zfcp_unit *unit, u8 id, void *ref)
{
- zfcp_erp_modify_unit_status(unit,
+ zfcp_erp_modify_unit_status(unit, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
ZFCP_LOG_NORMAL("unit erp failed on unit 0x%016Lx on port 0x%016Lx "
" on adapter %s\n", unit->fcp_lun,
unit->port->wwpn, zfcp_get_busid_by_unit(unit));
- debug_text_event(unit->port->adapter->erp_dbf, 2, "u_ufail");
- debug_event(unit->port->adapter->erp_dbf, 2,
- &unit->fcp_lun, sizeof (fcp_lun_t));
}
/*
* successfully is reset.
*
* returns: ZFCP_ERP_CONTINUES - action continues (not considered)
- * ZFCP_ERP_SUCCEEDED - action finished successfully
+ * ZFCP_ERP_SUCCEEDED - action finished successfully
* ZFCP_ERP_EXIT - action failed and will not continue
*/
static int
struct zfcp_port *port = erp_action->port;
struct zfcp_unit *unit = erp_action->unit;
- debug_text_event(adapter->erp_dbf, 5, "a_stct_norm");
- debug_event(adapter->erp_dbf, 5, &erp_action->action, sizeof (int));
- debug_event(adapter->erp_dbf, 5, &result, sizeof (int));
-
switch (erp_action->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
return result;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_statechange(int action,
u32 status,
struct zfcp_port *port,
struct zfcp_unit *unit, int retval)
{
- debug_text_event(adapter->erp_dbf, 3, "a_stsc");
- debug_event(adapter->erp_dbf, 3, &action, sizeof (int));
-
switch (action) {
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
if (zfcp_erp_strategy_statechange_detected(&adapter->status,
status)) {
- zfcp_erp_adapter_reopen_internal(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
+ zfcp_erp_adapter_reopen_internal(adapter,
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 67, NULL);
retval = ZFCP_ERP_EXIT;
}
break;
case ZFCP_ERP_ACTION_REOPEN_PORT:
if (zfcp_erp_strategy_statechange_detected(&port->status,
status)) {
- zfcp_erp_port_reopen_internal(port, ZFCP_STATUS_COMMON_ERP_FAILED);
+ zfcp_erp_port_reopen_internal(port,
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 68, NULL);
retval = ZFCP_ERP_EXIT;
}
break;
case ZFCP_ERP_ACTION_REOPEN_UNIT:
if (zfcp_erp_strategy_statechange_detected(&unit->status,
status)) {
- zfcp_erp_unit_reopen_internal(unit, ZFCP_STATUS_COMMON_ERP_FAILED);
+ zfcp_erp_unit_reopen_internal(unit,
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 69, NULL);
retval = ZFCP_ERP_EXIT;
}
break;
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
-static inline int
+static int
zfcp_erp_strategy_statechange_detected(atomic_t * target_status, u32 erp_status)
{
return
!(ZFCP_STATUS_ERP_CLOSE_ONLY & erp_status));
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result)
{
- debug_text_event(unit->port->adapter->erp_dbf, 5, "u_stct");
- debug_event(unit->port->adapter->erp_dbf, 5, &unit->fcp_lun,
- sizeof (fcp_lun_t));
-
switch (result) {
case ZFCP_ERP_SUCCEEDED :
atomic_set(&unit->erp_counter, 0);
case ZFCP_ERP_FAILED :
atomic_inc(&unit->erp_counter);
if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS)
- zfcp_erp_unit_failed(unit);
+ zfcp_erp_unit_failed(unit, 21, NULL);
break;
case ZFCP_ERP_EXIT :
/* nothing */
return result;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_check_port(struct zfcp_port *port, int result)
{
- debug_text_event(port->adapter->erp_dbf, 5, "p_stct");
- debug_event(port->adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
-
switch (result) {
case ZFCP_ERP_SUCCEEDED :
atomic_set(&port->erp_counter, 0);
case ZFCP_ERP_FAILED :
atomic_inc(&port->erp_counter);
if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS)
- zfcp_erp_port_failed(port);
+ zfcp_erp_port_failed(port, 22, NULL);
break;
case ZFCP_ERP_EXIT :
/* nothing */
return result;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter, int result)
{
- debug_text_event(adapter->erp_dbf, 5, "a_stct");
-
switch (result) {
case ZFCP_ERP_SUCCEEDED :
atomic_set(&adapter->erp_counter, 0);
case ZFCP_ERP_FAILED :
atomic_inc(&adapter->erp_counter);
if (atomic_read(&adapter->erp_counter) > ZFCP_MAX_ERPS)
- zfcp_erp_adapter_failed(adapter);
+ zfcp_erp_adapter_failed(adapter, 23, NULL);
break;
case ZFCP_ERP_EXIT :
/* nothing */
return result;
}
+struct zfcp_erp_add_work {
+ struct zfcp_unit *unit;
+ struct work_struct work;
+};
+
+/**
+ * zfcp_erp_scsi_scan
+ * @data: pointer to a struct zfcp_erp_add_work
+ *
+ * Registers a logical unit with the SCSI stack.
+ */
+static void zfcp_erp_scsi_scan(struct work_struct *work)
+{
+ struct zfcp_erp_add_work *p =
+ container_of(work, struct zfcp_erp_add_work, work);
+ struct zfcp_unit *unit = p->unit;
+ struct fc_rport *rport = unit->port->rport;
+ scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
+ unit->scsi_lun, 0);
+ atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
+ zfcp_unit_put(unit);
+ kfree(p);
+}
+
+/**
+ * zfcp_erp_schedule_work
+ * @unit: pointer to unit which should be registered with SCSI stack
+ *
+ * Schedules work which registers a unit with the SCSI stack
+ */
+static void
+zfcp_erp_schedule_work(struct zfcp_unit *unit)
+{
+ struct zfcp_erp_add_work *p;
+
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p) {
+ ZFCP_LOG_NORMAL("error: Out of resources. Could not register "
+ "the FCP-LUN 0x%Lx connected to "
+ "the port with WWPN 0x%Lx connected to "
+ "the adapter %s with the SCSI stack.\n",
+ unit->fcp_lun,
+ unit->port->wwpn,
+ zfcp_get_busid_by_unit(unit));
+ return;
+ }
+
+ zfcp_unit_get(unit);
+ atomic_set_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
+ INIT_WORK(&p->work, zfcp_erp_scsi_scan);
+ p->unit = unit;
+ schedule_work(&p->work);
+}
+
/*
- * function:
+ * function:
*
* purpose: remaining things in good cases,
* escalation in bad cases
struct zfcp_port *port,
struct zfcp_unit *unit, int status)
{
- debug_text_event(adapter->erp_dbf, 5, "a_stfol");
- debug_event(adapter->erp_dbf, 5, &action, sizeof (int));
-
/* initiate follow-up actions depending on success of finished action */
switch (action) {
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
if (status == ZFCP_ERP_SUCCEEDED)
- zfcp_erp_port_reopen_all_internal(adapter, 0);
+ zfcp_erp_port_reopen_all_internal(adapter, 0, 70, NULL);
else
- zfcp_erp_adapter_reopen_internal(adapter, 0);
+ zfcp_erp_adapter_reopen_internal(adapter, 0, 71, NULL);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
if (status == ZFCP_ERP_SUCCEEDED)
- zfcp_erp_port_reopen_internal(port, 0);
+ zfcp_erp_port_reopen_internal(port, 0, 72, NULL);
else
- zfcp_erp_adapter_reopen_internal(adapter, 0);
+ zfcp_erp_adapter_reopen_internal(adapter, 0, 73, NULL);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT:
if (status == ZFCP_ERP_SUCCEEDED)
- zfcp_erp_unit_reopen_all_internal(port, 0);
+ zfcp_erp_unit_reopen_all_internal(port, 0, 74, NULL);
else
- zfcp_erp_port_forced_reopen_internal(port, 0);
+ zfcp_erp_port_forced_reopen_internal(port, 0, 75, NULL);
break;
case ZFCP_ERP_ACTION_REOPEN_UNIT:
- if (status == ZFCP_ERP_SUCCEEDED) ; /* no further action */
- else
- zfcp_erp_port_reopen_internal(unit->port, 0);
+ /* Nothing to do if status == ZFCP_ERP_SUCCEEDED */
+ if (status != ZFCP_ERP_SUCCEEDED)
+ zfcp_erp_port_reopen_internal(unit->port, 0, 76, NULL);
break;
}
return 0;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_strategy_check_queues(struct zfcp_adapter *adapter)
{
read_lock(&adapter->erp_lock);
if (list_empty(&adapter->erp_ready_head) &&
list_empty(&adapter->erp_running_head)) {
- debug_text_event(adapter->erp_dbf, 4, "a_cq_wake");
atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING,
&adapter->status);
wake_up(&adapter->erp_done_wqh);
- } else
- debug_text_event(adapter->erp_dbf, 5, "a_cq_notempty");
+ }
read_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
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)
+void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, u8 id,
+ void *ref, u32 mask, int set_or_clear)
{
struct zfcp_port *port;
- u32 common_mask = mask & ZFCP_COMMON_FLAGS;
+ u32 changed, common_mask = mask & ZFCP_COMMON_FLAGS;
if (set_or_clear == ZFCP_SET) {
- atomic_set_mask(mask, &adapter->status);
- debug_text_event(adapter->erp_dbf, 3, "a_mod_as_s");
+ changed = atomic_test_and_set_mask(mask, &adapter->status);
} else {
- atomic_clear_mask(mask, &adapter->status);
+ changed = atomic_test_and_clear_mask(mask, &adapter->status);
if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
atomic_set(&adapter->erp_counter, 0);
- debug_text_event(adapter->erp_dbf, 3, "a_mod_as_c");
}
- debug_event(adapter->erp_dbf, 3, &mask, sizeof (u32));
+ if (changed)
+ zfcp_rec_dbf_event_adapter(id, ref, adapter);
/* Deal with all underlying devices, only pass common_mask */
if (common_mask)
list_for_each_entry(port, &adapter->port_list_head, list)
- zfcp_erp_modify_port_status(port, common_mask,
- set_or_clear);
+ zfcp_erp_modify_port_status(port, id, ref, common_mask,
+ set_or_clear);
}
/*
* purpose: sets the port and all underlying devices to ERP_FAILED
*
*/
-void
-zfcp_erp_modify_port_status(struct zfcp_port *port, u32 mask, int set_or_clear)
+void zfcp_erp_modify_port_status(struct zfcp_port *port, u8 id, void *ref,
+ u32 mask, int set_or_clear)
{
struct zfcp_unit *unit;
- u32 common_mask = mask & ZFCP_COMMON_FLAGS;
+ u32 changed, common_mask = mask & ZFCP_COMMON_FLAGS;
if (set_or_clear == ZFCP_SET) {
- atomic_set_mask(mask, &port->status);
- debug_text_event(port->adapter->erp_dbf, 3, "p_mod_ps_s");
+ changed = atomic_test_and_set_mask(mask, &port->status);
} else {
- atomic_clear_mask(mask, &port->status);
+ changed = atomic_test_and_clear_mask(mask, &port->status);
if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
atomic_set(&port->erp_counter, 0);
- debug_text_event(port->adapter->erp_dbf, 3, "p_mod_ps_c");
}
- debug_event(port->adapter->erp_dbf, 3, &port->wwpn, sizeof (wwn_t));
- debug_event(port->adapter->erp_dbf, 3, &mask, sizeof (u32));
+ if (changed)
+ zfcp_rec_dbf_event_port(id, ref, port);
/* Modify status of all underlying devices, only pass common mask */
if (common_mask)
list_for_each_entry(unit, &port->unit_list_head, list)
- zfcp_erp_modify_unit_status(unit, common_mask,
- set_or_clear);
+ zfcp_erp_modify_unit_status(unit, id, ref, common_mask,
+ set_or_clear);
}
/*
* purpose: sets the unit to ERP_FAILED
*
*/
-void
-zfcp_erp_modify_unit_status(struct zfcp_unit *unit, u32 mask, int set_or_clear)
+void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, u8 id, void *ref,
+ u32 mask, int set_or_clear)
{
+ u32 changed;
+
if (set_or_clear == ZFCP_SET) {
- atomic_set_mask(mask, &unit->status);
- debug_text_event(unit->port->adapter->erp_dbf, 3, "u_mod_us_s");
+ changed = atomic_test_and_set_mask(mask, &unit->status);
} else {
- atomic_clear_mask(mask, &unit->status);
+ changed = atomic_test_and_clear_mask(mask, &unit->status);
if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) {
atomic_set(&unit->erp_counter, 0);
}
- debug_text_event(unit->port->adapter->erp_dbf, 3, "u_mod_us_c");
}
- debug_event(unit->port->adapter->erp_dbf, 3, &unit->fcp_lun,
- sizeof (fcp_lun_t));
- debug_event(unit->port->adapter->erp_dbf, 3, &mask, sizeof (u32));
+ if (changed)
+ zfcp_rec_dbf_event_unit(id, ref, unit);
}
/*
- * function:
+ * function:
*
* 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
-zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter, int clear_mask)
+int zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter, int clear_mask,
+ u8 id, void *ref)
{
int retval;
unsigned long flags;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
- retval = zfcp_erp_port_reopen_all_internal(adapter, clear_mask);
+ retval = zfcp_erp_port_reopen_all_internal(adapter, clear_mask, id,
+ ref);
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: FIXME
- */
-static int
-zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *adapter, int clear_mask)
+static int zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *adapter,
+ int clear_mask, u8 id, void *ref)
{
int retval = 0;
struct zfcp_port *port;
list_for_each_entry(port, &adapter->port_list_head, list)
if (!atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status))
- zfcp_erp_port_reopen_internal(port, clear_mask);
+ zfcp_erp_port_reopen_internal(port, clear_mask, id,
+ ref);
return retval;
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: FIXME
*/
-static int
-zfcp_erp_unit_reopen_all_internal(struct zfcp_port *port, int clear_mask)
+static int zfcp_erp_unit_reopen_all_internal(struct zfcp_port *port,
+ int clear_mask, u8 id, void *ref)
{
int retval = 0;
struct zfcp_unit *unit;
list_for_each_entry(unit, &port->unit_list_head, list)
- zfcp_erp_unit_reopen_internal(unit, clear_mask);
+ zfcp_erp_unit_reopen_internal(unit, clear_mask, id, ref);
return retval;
}
/*
- * function:
+ * function:
*
* purpose: this routine executes the 'Reopen Adapter' action
* (the entire action is processed synchronously, since
else
retval = zfcp_erp_adapter_strategy_open(erp_action);
- debug_text_event(adapter->erp_dbf, 3, "a_ast/ret");
- debug_event(adapter->erp_dbf, 3, &erp_action->action, sizeof (int));
- debug_event(adapter->erp_dbf, 3, &retval, sizeof (int));
-
if (retval == ZFCP_ERP_FAILED) {
ZFCP_LOG_INFO("Waiting to allow the adapter %s "
"to recover itself\n",
zfcp_get_busid_by_adapter(adapter));
- msleep(jiffies_to_msecs(ZFCP_TYPE2_RECOVERY_TIME));
+ ssleep(ZFCP_TYPE2_RECOVERY_TIME);
}
return retval;
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_SUCCEEDED - action finished successfully
* ZFCP_ERP_FAILED - action finished unsuccessfully
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_SUCCEEDED - action finished successfully
* ZFCP_ERP_FAILED - action finished unsuccessfully
* purpose: allocate the irq associated with this devno and register
* the FSF adapter with the SCSI stack
*
- * returns:
+ * returns:
*/
static int
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:
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK |
+ ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
+ ZFCP_STATUS_ADAPTER_XPORT_OK,
+ &erp_action->adapter->status);
out:
return retval;
}
* returns: 0 - successful setup
* !0 - failed setup
*/
-int
+static int
zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *erp_action)
{
int retval;
zfcp_get_busid_by_adapter(adapter));
goto failed_qdio_establish;
}
- debug_text_event(adapter->erp_dbf, 3, "qdio_est");
if (qdio_activate(adapter->ccw_device, 0) != 0) {
ZFCP_LOG_INFO("error: activation of QDIO queues failed "
zfcp_get_busid_by_adapter(adapter));
goto failed_qdio_activate;
}
- debug_text_event(adapter->erp_dbf, 3, "qdio_act");
/*
* put buffers into response queue,
sbale = &(adapter->response_queue.buffer[i]->element[0]);
sbale->length = 0;
sbale->flags = SBAL_FLAGS_LAST_ENTRY;
- sbale->addr = 0;
+ sbale->addr = NULL;
}
ZFCP_LOG_TRACE("calling do_QDIO on adapter %s (flags=0x%x, "
/* NOP */
failed_qdio_activate:
- debug_text_event(adapter->erp_dbf, 3, "qdio_down1a");
while (qdio_shutdown(adapter->ccw_device,
QDIO_FLAG_CLEANUP_USING_CLEAR) == -EINPROGRESS)
- msleep(1000);
- debug_text_event(adapter->erp_dbf, 3, "qdio_down1b");
+ ssleep(1);
failed_qdio_establish:
failed_sanity:
return retval;
}
-/*
- * function: zfcp_qdio_cleanup
- *
- * purpose: cleans up QDIO operation for the specified adapter
- *
- * returns: 0 - successful cleanup
- * !0 - failed cleanup
- */
-int
-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;
-
- 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));
- retval = ZFCP_ERP_FAILED;
- goto out;
- }
-
- /*
- * 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;
- 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 retval;
- /* do 'exchange configuration data' */
retval = zfcp_erp_adapter_strategy_open_fsf_xconfig(erp_action);
if (retval == ZFCP_ERP_FAILED)
- return retval;
+ return ZFCP_ERP_FAILED;
- /* start the desired number of Status Reads */
- retval = zfcp_erp_adapter_strategy_open_fsf_statusread(erp_action);
- return retval;
+ 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);
- zfcp_erp_timeout_init(erp_action);
+ write_unlock_irq(&adapter->erp_lock);
if (zfcp_fsf_exchange_config_data(erp_action)) {
retval = ZFCP_ERP_FAILED;
- debug_text_event(adapter->erp_dbf, 5, "a_fstx_xf");
ZFCP_LOG_INFO("error: initiation of exchange of "
"configuration 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");
/*
* _must_ be the one belonging to the 'exchange config
* data' request.
*/
+ zfcp_rec_dbf_event_thread(6, adapter, 1);
down(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread(7, adapter, 1);
if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
ZFCP_LOG_INFO("error: exchange of configuration data "
"for adapter %s timed out\n",
ZFCP_LOG_DEBUG("host connection still initialising... "
"waiting and retrying...\n");
/* sleep a little bit before retry */
- msleep(jiffies_to_msecs(sleep));
+ ssleep(sleep);
sleep *= 2;
}
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+ &adapter->status);
+
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
&adapter->status)) {
ZFCP_LOG_INFO("error: exchange of configuration data for "
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
+static int
+zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *erp_action)
+{
+ int ret;
+ struct zfcp_adapter *adapter;
+
+ adapter = erp_action->adapter;
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
+
+ write_lock_irq(&adapter->erp_lock);
+ zfcp_erp_action_to_running(erp_action);
+ write_unlock_irq(&adapter->erp_lock);
+
+ ret = zfcp_fsf_exchange_port_data(erp_action);
+ if (ret == -EOPNOTSUPP) {
+ return ZFCP_ERP_SUCCEEDED;
+ } else if (ret) {
+ return ZFCP_ERP_FAILED;
+ }
+
+ ret = ZFCP_ERP_SUCCEEDED;
+ zfcp_rec_dbf_event_thread(8, adapter, 1);
+ down(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread(9, adapter, 1);
+ 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;
+ }
+
+ /* 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;
+}
+
static int
zfcp_erp_adapter_strategy_open_fsf_statusread(struct zfcp_erp_action
*erp_action)
}
/*
- * 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
- */
-static int
-zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *erp_action)
-{
- int retval = ZFCP_ERP_SUCCEEDED;
- 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);
-
- return retval;
-}
-
-/*
- * function:
+ * function:
*
* purpose: this routine executes the 'Reopen Physical Port' action
*
{
int retval = ZFCP_ERP_FAILED;
struct zfcp_port *port = erp_action->port;
- struct zfcp_adapter *adapter = erp_action->adapter;
switch (erp_action->step) {
break;
}
- debug_text_event(adapter->erp_dbf, 3, "p_pfst/ret");
- debug_event(adapter->erp_dbf, 3, &port->wwpn, sizeof (wwn_t));
- debug_event(adapter->erp_dbf, 3, &erp_action->action, sizeof (int));
- debug_event(adapter->erp_dbf, 3, &retval, sizeof (int));
-
return retval;
}
/*
- * function:
+ * function:
*
* purpose: this routine executes the 'Reopen Port' action
*
{
int retval = ZFCP_ERP_FAILED;
struct zfcp_port *port = erp_action->port;
- struct zfcp_adapter *adapter = erp_action->adapter;
switch (erp_action->step) {
retval = zfcp_erp_port_strategy_open(erp_action);
out:
- debug_text_event(adapter->erp_dbf, 3, "p_pst/ret");
- debug_event(adapter->erp_dbf, 3, &port->wwpn, sizeof (wwn_t));
- debug_event(adapter->erp_dbf, 3, &erp_action->action, sizeof (int));
- debug_event(adapter->erp_dbf, 3, &retval, sizeof (int));
-
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 "
port->wwpn,
zfcp_get_busid_by_adapter(adapter),
adapter->peer_wwpn);
- zfcp_erp_port_failed(port);
+ zfcp_erp_port_failed(port, 25, NULL);
retval = ZFCP_ERP_FAILED;
break;
}
/* nameserver port may live again */
atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING,
&adapter->nameserver_port->status);
- if (zfcp_erp_port_reopen(adapter->nameserver_port, 0)
- >= 0) {
+ if (zfcp_erp_port_reopen(adapter->nameserver_port, 0,
+ 77, erp_action) >= 0) {
erp_action->step =
ZFCP_ERP_STEP_NAMESERVER_OPEN;
retval = ZFCP_ERP_CONTINUES;
"for port 0x%016Lx "
"(misconfigured WWPN?)\n",
port->wwpn);
- zfcp_erp_port_failed(port);
+ zfcp_erp_port_failed(port, 26, NULL);
retval = ZFCP_ERP_EXIT;
} else {
ZFCP_LOG_DEBUG("nameserver look-up failed for "
retval = ZFCP_ERP_FAILED;
}
} else {
- ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%08x -> "
+ ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%06x -> "
"trying open\n", port->wwpn, port->d_id);
retval = zfcp_erp_port_strategy_open_port(erp_action);
}
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_port_strategy_open_nameserver(struct zfcp_erp_action *erp_action)
{
case ZFCP_ERP_STEP_UNINITIALIZED:
case ZFCP_ERP_STEP_PHYS_PORT_CLOSING:
case ZFCP_ERP_STEP_PORT_CLOSING:
- ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%08x -> trying open\n",
+ ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%06x -> trying open\n",
port->wwpn, port->d_id);
retval = zfcp_erp_port_strategy_open_port(erp_action);
break;
}
/*
- * function:
+ * function:
*
* purpose: makes the erp thread continue with reopen (physical) port
* actions which have been paused until the name server port
read_lock_irqsave(&adapter->erp_lock, flags);
list_for_each_entry_safe(erp_action, tmp, &adapter->erp_running_head,
list) {
- debug_text_event(adapter->erp_dbf, 4, "p_pstnsw_n");
- debug_event(adapter->erp_dbf, 4, &erp_action->port->wwpn,
- sizeof (wwn_t));
if (erp_action->step == ZFCP_ERP_STEP_NAMESERVER_OPEN) {
- debug_text_event(adapter->erp_dbf, 3, "p_pstnsw_w");
- debug_event(adapter->erp_dbf, 3,
- &erp_action->port->wwpn, sizeof (wwn_t));
if (atomic_test_mask(
ZFCP_STATUS_COMMON_ERP_FAILED,
&adapter->nameserver_port->status))
- zfcp_erp_port_failed(erp_action->port);
+ zfcp_erp_port_failed(erp_action->port, 27,
+ NULL);
zfcp_erp_action_ready(erp_action);
}
}
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
* ZFCP_ERP_FAILED - action finished unsuccessfully
zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *erp_action)
{
int retval;
- 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");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
retval = ZFCP_ERP_NOMEM;
goto out;
}
erp_action->step = ZFCP_ERP_STEP_PHYS_PORT_CLOSING;
if (retval != 0) {
- debug_text_event(adapter->erp_dbf, 5, "o_pfstc_cpf");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
/* could not send 'open', fail */
retval = ZFCP_ERP_FAILED;
goto out;
}
- debug_text_event(adapter->erp_dbf, 6, "o_pfstc_cpok");
- debug_event(adapter->erp_dbf, 6, &port->wwpn, sizeof (wwn_t));
retval = ZFCP_ERP_CONTINUES;
out:
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_port_strategy_clearstati(struct zfcp_port *port)
{
int retval = 0;
- struct zfcp_adapter *adapter = port->adapter;
-
- debug_text_event(adapter->erp_dbf, 5, "p_pstclst");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING |
ZFCP_STATUS_COMMON_CLOSING |
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
* ZFCP_ERP_FAILED - action finished unsuccessfully
zfcp_erp_port_strategy_close(struct zfcp_erp_action *erp_action)
{
int retval;
- 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");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
retval = ZFCP_ERP_NOMEM;
goto out;
}
erp_action->step = ZFCP_ERP_STEP_PORT_CLOSING;
if (retval != 0) {
- debug_text_event(adapter->erp_dbf, 5, "p_pstc_cpf");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
/* could not send 'close', fail */
retval = ZFCP_ERP_FAILED;
goto out;
}
- debug_text_event(adapter->erp_dbf, 6, "p_pstc_cpok");
- debug_event(adapter->erp_dbf, 6, &port->wwpn, sizeof (wwn_t));
retval = ZFCP_ERP_CONTINUES;
out:
return retval;
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
* ZFCP_ERP_FAILED - action finished unsuccessfully
zfcp_erp_port_strategy_open_port(struct zfcp_erp_action *erp_action)
{
int retval;
- 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");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
retval = ZFCP_ERP_NOMEM;
goto out;
}
erp_action->step = ZFCP_ERP_STEP_PORT_OPENING;
if (retval != 0) {
- debug_text_event(adapter->erp_dbf, 5, "p_psto_opf");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
/* could not send 'open', fail */
retval = ZFCP_ERP_FAILED;
goto out;
}
- debug_text_event(adapter->erp_dbf, 6, "p_psto_opok");
- debug_event(adapter->erp_dbf, 6, &port->wwpn, sizeof (wwn_t));
retval = ZFCP_ERP_CONTINUES;
out:
return retval;
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
* ZFCP_ERP_FAILED - action finished unsuccessfully
zfcp_erp_port_strategy_open_common_lookup(struct zfcp_erp_action *erp_action)
{
int retval;
- 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");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
retval = ZFCP_ERP_NOMEM;
goto out;
}
erp_action->step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP;
if (retval != 0) {
- debug_text_event(adapter->erp_dbf, 5, "p_pstn_ref");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
/* could not send nameserver request, fail */
retval = ZFCP_ERP_FAILED;
goto out;
}
- debug_text_event(adapter->erp_dbf, 6, "p_pstn_reok");
- debug_event(adapter->erp_dbf, 6, &port->wwpn, sizeof (wwn_t));
retval = ZFCP_ERP_CONTINUES;
out:
return retval;
}
/*
- * function:
+ * function:
*
* purpose: this routine executes the 'Reopen Unit' action
* currently no retries
{
int retval = ZFCP_ERP_FAILED;
struct zfcp_unit *unit = erp_action->unit;
- struct zfcp_adapter *adapter = erp_action->adapter;
switch (erp_action->step) {
break;
}
- debug_text_event(adapter->erp_dbf, 3, "u_ust/ret");
- debug_event(adapter->erp_dbf, 3, &unit->fcp_lun, sizeof (fcp_lun_t));
- debug_event(adapter->erp_dbf, 3, &erp_action->action, sizeof (int));
- debug_event(adapter->erp_dbf, 3, &retval, sizeof (int));
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit)
{
int retval = 0;
- struct zfcp_adapter *adapter = unit->port->adapter;
-
- debug_text_event(adapter->erp_dbf, 5, "u_ustclst");
- debug_event(adapter->erp_dbf, 5, &unit->fcp_lun, sizeof (fcp_lun_t));
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING |
ZFCP_STATUS_COMMON_CLOSING |
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
* ZFCP_ERP_FAILED - action finished unsuccessfully
zfcp_erp_unit_strategy_close(struct zfcp_erp_action *erp_action)
{
int retval;
- 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");
- debug_event(adapter->erp_dbf, 5, &unit->fcp_lun,
- sizeof (fcp_lun_t));
retval = ZFCP_ERP_NOMEM;
goto out;
}
erp_action->step = ZFCP_ERP_STEP_UNIT_CLOSING;
if (retval != 0) {
- debug_text_event(adapter->erp_dbf, 5, "u_ustc_cuf");
- debug_event(adapter->erp_dbf, 5, &unit->fcp_lun,
- sizeof (fcp_lun_t));
/* could not send 'close', fail */
retval = ZFCP_ERP_FAILED;
goto out;
}
- debug_text_event(adapter->erp_dbf, 6, "u_ustc_cuok");
- debug_event(adapter->erp_dbf, 6, &unit->fcp_lun, sizeof (fcp_lun_t));
retval = ZFCP_ERP_CONTINUES;
out:
}
/*
- * function:
+ * function:
*
- * purpose:
+ * purpose:
*
* returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
* ZFCP_ERP_FAILED - action finished unsuccessfully
zfcp_erp_unit_strategy_open(struct zfcp_erp_action *erp_action)
{
int retval;
- 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");
- debug_event(adapter->erp_dbf, 5, &unit->fcp_lun,
- sizeof (fcp_lun_t));
retval = ZFCP_ERP_NOMEM;
goto out;
}
erp_action->step = ZFCP_ERP_STEP_UNIT_OPENING;
if (retval != 0) {
- debug_text_event(adapter->erp_dbf, 5, "u_usto_ouf");
- debug_event(adapter->erp_dbf, 5, &unit->fcp_lun,
- sizeof (fcp_lun_t));
/* could not send 'open', fail */
retval = ZFCP_ERP_FAILED;
goto out;
}
- debug_text_event(adapter->erp_dbf, 6, "u_usto_ouok");
- debug_event(adapter->erp_dbf, 6, &unit->fcp_lun, sizeof (fcp_lun_t));
retval = ZFCP_ERP_CONTINUES;
out:
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
-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);
}
/*
- * function:
+ * function:
*
* purpose: enqueue the specified error recovery action, if needed
*
* returns:
*/
-static int
-zfcp_erp_action_enqueue(int action,
- struct zfcp_adapter *adapter,
- struct zfcp_port *port, struct zfcp_unit *unit)
+static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
+ struct zfcp_port *port,
+ struct zfcp_unit *unit, u8 id, void *ref)
{
- int retval = 1;
+ int retval = 1, need = want;
struct zfcp_erp_action *erp_action = NULL;
- int stronger_action = 0;
u32 status = 0;
/*
&adapter->status))
return -EIO;
- debug_event(adapter->erp_dbf, 4, &action, sizeof (int));
/* check whether we really need this */
- switch (action) {
+ switch (want) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
if (atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status)) {
- debug_text_event(adapter->erp_dbf, 4, "u_actenq_drp");
- debug_event(adapter->erp_dbf, 4, &port->wwpn,
- sizeof (wwn_t));
- debug_event(adapter->erp_dbf, 4, &unit->fcp_lun,
- sizeof (fcp_lun_t));
goto out;
}
if (!atomic_test_mask
goto out;
}
if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_UNBLOCKED, &port->status)) {
- stronger_action = ZFCP_ERP_ACTION_REOPEN_PORT;
- unit = NULL;
- }
+ (ZFCP_STATUS_COMMON_UNBLOCKED, &port->status))
+ need = ZFCP_ERP_ACTION_REOPEN_PORT;
/* fall through !!! */
case ZFCP_ERP_ACTION_REOPEN_PORT:
if (atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status)) {
- debug_text_event(adapter->erp_dbf, 4, "p_actenq_drp");
- debug_event(adapter->erp_dbf, 4, &port->wwpn,
- sizeof (wwn_t));
goto out;
}
/* fall through !!! */
ZFCP_ERP_ACTION_REOPEN_PORT_FORCED) {
ZFCP_LOG_INFO("dropped erp action %i (port "
"0x%016Lx, action in use: %i)\n",
- action, port->wwpn,
+ want, port->wwpn,
port->erp_action.action);
- debug_text_event(adapter->erp_dbf, 4,
- "pf_actenq_drp");
- } else
- debug_text_event(adapter->erp_dbf, 4,
- "pf_actenq_drpcp");
- debug_event(adapter->erp_dbf, 4, &port->wwpn,
- sizeof (wwn_t));
+ }
goto out;
}
if (!atomic_test_mask
goto out;
}
if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status)) {
- stronger_action = ZFCP_ERP_ACTION_REOPEN_ADAPTER;
- port = NULL;
- }
+ (ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status))
+ need = ZFCP_ERP_ACTION_REOPEN_ADAPTER;
/* fall through !!! */
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
if (atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status)) {
- debug_text_event(adapter->erp_dbf, 4, "a_actenq_drp");
goto out;
}
break;
default:
- debug_text_exception(adapter->erp_dbf, 1, "a_actenq_bug");
- debug_event(adapter->erp_dbf, 1, &action, sizeof (int));
ZFCP_LOG_NORMAL("bug: unknown erp action requested "
"on adapter %s (action=%d)\n",
- zfcp_get_busid_by_adapter(adapter), action);
+ zfcp_get_busid_by_adapter(adapter), want);
goto out;
}
/* check whether we need something stronger first */
- if (stronger_action) {
- debug_text_event(adapter->erp_dbf, 4, "a_actenq_str");
- debug_event(adapter->erp_dbf, 4, &stronger_action,
- sizeof (int));
+ if (need) {
ZFCP_LOG_DEBUG("stronger erp action %d needed before "
"erp action %d on adapter %s\n",
- stronger_action, action,
- zfcp_get_busid_by_adapter(adapter));
- action = stronger_action;
+ need, want, zfcp_get_busid_by_adapter(adapter));
}
/* mark adapter to have some error recovery pending */
atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING, &adapter->status);
/* setup error recovery action */
- switch (action) {
+ switch (need) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
zfcp_unit_get(unit);
break;
}
- debug_text_event(adapter->erp_dbf, 4, "a_actenq");
-
memset(erp_action, 0, sizeof (struct zfcp_erp_action));
erp_action->adapter = adapter;
erp_action->port = port;
erp_action->unit = unit;
- erp_action->action = action;
+ erp_action->action = need;
erp_action->status = status;
++adapter->erp_total_count;
/* finally put it into 'ready' queue and kick erp thread */
- list_add(&erp_action->list, &adapter->erp_ready_head);
+ list_add_tail(&erp_action->list, &adapter->erp_ready_head);
up(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread(1, adapter, 0);
retval = 0;
out:
+ zfcp_rec_dbf_event_trigger(id, ref, want, need, erp_action,
+ adapter, port, unit);
return retval;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- */
static int
zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
{
erp_action->status &= ~ZFCP_STATUS_ERP_LOWMEM;
}
- debug_text_event(adapter->erp_dbf, 4, "a_actdeq");
- debug_event(adapter->erp_dbf, 4, &erp_action->action, sizeof (int));
list_del(&erp_action->list);
+ zfcp_rec_dbf_event_action(144, erp_action);
+
switch (erp_action->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
/**
* 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);
+ if (atomic_test_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING,
+ &unit->status) == 0)
+ zfcp_erp_schedule_work(unit);
+ }
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_target_unblock(&port->rport->dev);
+ 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) {
+ 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)
+static 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");
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status))
zfcp_erp_action_dismiss(&adapter->erp_action);
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;
- debug_text_event(adapter->erp_dbf, 5, "p_actab");
- debug_event(adapter->erp_dbf, 5, &port->wwpn, sizeof (wwn_t));
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status))
zfcp_erp_action_dismiss(&port->erp_action);
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)
+static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
{
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- debug_text_event(adapter->erp_dbf, 6, "a_toru");
- debug_event(adapter->erp_dbf, 6, &erp_action->action, sizeof (int));
list_move(&erp_action->list, &erp_action->adapter->erp_running_head);
+ zfcp_rec_dbf_event_action(145, erp_action);
}
-/*
- * function:
- *
- * purpose: moves erp_action to 'erp ready list'
- *
- * returns:
- */
-static inline void
-zfcp_erp_action_to_ready(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_action_to_ready(struct zfcp_erp_action *erp_action)
{
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- debug_text_event(adapter->erp_dbf, 6, "a_tore");
- debug_event(adapter->erp_dbf, 6, &erp_action->action, sizeof (int));
list_move(&erp_action->list, &erp_action->adapter->erp_ready_head);
+ zfcp_rec_dbf_event_action(146, erp_action);
}
-/*
- * function: zfcp_erp_port_boxed
- *
- * purpose:
- */
-void
-zfcp_erp_port_boxed(struct zfcp_port *port)
+void zfcp_erp_port_boxed(struct zfcp_port *port, u8 id, void *ref)
{
- struct zfcp_adapter *adapter = port->adapter;
unsigned long flags;
- debug_text_event(adapter->erp_dbf, 3, "p_access_boxed");
- debug_event(adapter->erp_dbf, 3, &port->wwpn, sizeof(wwn_t));
read_lock_irqsave(&zfcp_data.config_lock, flags);
- zfcp_erp_modify_port_status(port,
- ZFCP_STATUS_COMMON_ACCESS_BOXED,
- ZFCP_SET);
+ zfcp_erp_modify_port_status(port, id, ref,
+ ZFCP_STATUS_COMMON_ACCESS_BOXED, ZFCP_SET);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
- zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED);
+ zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
-/*
- * function: zfcp_erp_unit_boxed
- *
- * purpose:
- */
-void
-zfcp_erp_unit_boxed(struct zfcp_unit *unit)
+void zfcp_erp_unit_boxed(struct zfcp_unit *unit, u8 id, void *ref)
{
- struct zfcp_adapter *adapter = unit->port->adapter;
-
- debug_text_event(adapter->erp_dbf, 3, "u_access_boxed");
- debug_event(adapter->erp_dbf, 3, &unit->fcp_lun, sizeof(fcp_lun_t));
- zfcp_erp_modify_unit_status(unit,
- ZFCP_STATUS_COMMON_ACCESS_BOXED,
- ZFCP_SET);
- zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED);
+ zfcp_erp_modify_unit_status(unit, id, ref,
+ ZFCP_STATUS_COMMON_ACCESS_BOXED, ZFCP_SET);
+ zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
-/*
- * function: zfcp_erp_port_access_denied
- *
- * purpose:
- */
-void
-zfcp_erp_port_access_denied(struct zfcp_port *port)
+void zfcp_erp_port_access_denied(struct zfcp_port *port, u8 id, void *ref)
{
- struct zfcp_adapter *adapter = port->adapter;
unsigned long flags;
- debug_text_event(adapter->erp_dbf, 3, "p_access_denied");
- debug_event(adapter->erp_dbf, 3, &port->wwpn, sizeof(wwn_t));
read_lock_irqsave(&zfcp_data.config_lock, flags);
- zfcp_erp_modify_port_status(port,
- ZFCP_STATUS_COMMON_ERP_FAILED |
- ZFCP_STATUS_COMMON_ACCESS_DENIED,
- ZFCP_SET);
+ zfcp_erp_modify_port_status(port, id, ref,
+ ZFCP_STATUS_COMMON_ERP_FAILED |
+ ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
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)
+void zfcp_erp_unit_access_denied(struct zfcp_unit *unit, u8 id, void *ref)
{
- struct zfcp_adapter *adapter = unit->port->adapter;
-
- debug_text_event(adapter->erp_dbf, 3, "u_access_denied");
- debug_event(adapter->erp_dbf, 3, &unit->fcp_lun, sizeof(fcp_lun_t));
- zfcp_erp_modify_unit_status(unit,
- ZFCP_STATUS_COMMON_ERP_FAILED |
- ZFCP_STATUS_COMMON_ACCESS_DENIED,
- ZFCP_SET);
+ zfcp_erp_modify_unit_status(unit, id, ref,
+ ZFCP_STATUS_COMMON_ERP_FAILED |
+ ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
}
-/*
- * function: zfcp_erp_adapter_access_changed
- *
- * purpose:
- */
-void
-zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter)
+void zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter, u8 id,
+ void *ref)
{
struct zfcp_port *port;
unsigned long flags;
- debug_text_event(adapter->erp_dbf, 3, "a_access_recover");
- debug_event(adapter->erp_dbf, 3, &adapter->name, 8);
+ if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
+ return;
read_lock_irqsave(&zfcp_data.config_lock, flags);
if (adapter->nameserver_port)
- zfcp_erp_port_access_changed(adapter->nameserver_port);
+ zfcp_erp_port_access_changed(adapter->nameserver_port, id, ref);
list_for_each_entry(port, &adapter->port_list_head, list)
if (port != adapter->nameserver_port)
- zfcp_erp_port_access_changed(port);
+ zfcp_erp_port_access_changed(port, id, ref);
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)
+void zfcp_erp_port_access_changed(struct zfcp_port *port, u8 id, void *ref)
{
struct zfcp_adapter *adapter = port->adapter;
struct zfcp_unit *unit;
- debug_text_event(adapter->erp_dbf, 3, "p_access_recover");
- debug_event(adapter->erp_dbf, 3, &port->wwpn, sizeof(wwn_t));
-
if (!atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED,
&port->status) &&
!atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_BOXED,
&port->status)) {
if (!atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status))
list_for_each_entry(unit, &port->unit_list_head, list)
- zfcp_erp_unit_access_changed(unit);
+ zfcp_erp_unit_access_changed(unit, id, ref);
return;
}
ZFCP_LOG_NORMAL("reopen of port 0x%016Lx on adapter %s "
"(due to ACT update)\n",
port->wwpn, zfcp_get_busid_by_adapter(adapter));
- if (zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED) != 0)
+ if (zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref))
ZFCP_LOG_NORMAL("failed reopen of port"
"(adapter %s, wwpn=0x%016Lx)\n",
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)
+void zfcp_erp_unit_access_changed(struct zfcp_unit *unit, u8 id, void *ref)
{
struct zfcp_adapter *adapter = unit->port->adapter;
- debug_text_event(adapter->erp_dbf, 3, "u_access_recover");
- debug_event(adapter->erp_dbf, 3, &unit->fcp_lun, sizeof(fcp_lun_t));
-
if (!atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED,
&unit->status) &&
!atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_BOXED,
" on adapter %s (due to ACT update)\n",
unit->fcp_lun, unit->port->wwpn,
zfcp_get_busid_by_adapter(adapter));
- if (zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED) != 0)
+ if (zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref))
ZFCP_LOG_NORMAL("failed reopen of unit (adapter %s, "
"wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n",
zfcp_get_busid_by_adapter(adapter),
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff