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path: root/drivers/s390/scsi/zfcp_erp.c
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Diffstat (limited to 'drivers/s390/scsi/zfcp_erp.c')
-rw-r--r--drivers/s390/scsi/zfcp_erp.c121
1 files changed, 83 insertions, 38 deletions
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 53ebc1cdfe2..0cf31f7d1c0 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -35,7 +35,7 @@
#include "zfcp_ext.h"
-static int zfcp_erp_adisc(struct zfcp_adapter *, fc_id_t);
+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);
@@ -295,12 +295,12 @@ zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear_mask)
/**
* zfcp_erp_adisc - send ADISC ELS command
- * @adapter: adapter structure
- * @d_id: d_id of port where ADISC is sent to
+ * @port: port structure
*/
int
-zfcp_erp_adisc(struct zfcp_adapter *adapter, fc_id_t d_id)
+zfcp_erp_adisc(struct zfcp_port *port)
{
+ struct zfcp_adapter *adapter = port->adapter;
struct zfcp_send_els *send_els;
struct zfcp_ls_adisc *adisc;
void *address = NULL;
@@ -332,7 +332,8 @@ zfcp_erp_adisc(struct zfcp_adapter *adapter, fc_id_t d_id)
send_els->req_count = send_els->resp_count = 1;
send_els->adapter = adapter;
- send_els->d_id = d_id;
+ send_els->port = port;
+ send_els->d_id = port->d_id;
send_els->handler = zfcp_erp_adisc_handler;
send_els->handler_data = (unsigned long) send_els;
@@ -350,7 +351,7 @@ zfcp_erp_adisc(struct zfcp_adapter *adapter, fc_id_t d_id)
ZFCP_LOG_INFO("ADISC request from s_id 0x%08x to d_id 0x%08x "
"(wwpn=0x%016Lx, wwnn=0x%016Lx, "
"hard_nport_id=0x%08x, nport_id=0x%08x)\n",
- adapter->s_id, d_id, (wwn_t) adisc->wwpn,
+ adapter->s_id, send_els->d_id, (wwn_t) adisc->wwpn,
(wwn_t) adisc->wwnn, adisc->hard_nport_id,
adisc->nport_id);
@@ -367,7 +368,7 @@ zfcp_erp_adisc(struct zfcp_adapter *adapter, fc_id_t d_id)
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", d_id,
+ "0x%08x on adapter %s\n", send_els->d_id,
zfcp_get_busid_by_adapter(adapter));
del_timer(send_els->timer);
goto freemem;
@@ -411,14 +412,9 @@ zfcp_erp_adisc_handler(unsigned long data)
del_timer(send_els->timer);
adapter = send_els->adapter;
+ port = send_els->port;
d_id = send_els->d_id;
- read_lock(&zfcp_data.config_lock);
- port = zfcp_get_port_by_did(send_els->adapter, send_els->d_id);
- read_unlock(&zfcp_data.config_lock);
-
- BUG_ON(port == NULL);
-
/* request rejected or timed out */
if (send_els->status != 0) {
ZFCP_LOG_NORMAL("ELS request rejected/timed out, "
@@ -482,7 +478,7 @@ zfcp_test_link(struct zfcp_port *port)
int retval;
zfcp_port_get(port);
- retval = zfcp_erp_adisc(port->adapter, port->d_id);
+ retval = zfcp_erp_adisc(port);
if (retval != 0) {
zfcp_port_put(port);
ZFCP_LOG_NORMAL("reopen needed for port 0x%016Lx "
@@ -895,7 +891,7 @@ zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *erp_action)
if (erp_action->fsf_req) {
/* take lock to ensure that request is not being deleted meanwhile */
- write_lock(&adapter->fsf_req_list_lock);
+ 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)
@@ -938,7 +934,7 @@ zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *erp_action)
*/
erp_action->fsf_req = NULL;
}
- write_unlock(&adapter->fsf_req_list_lock);
+ spin_unlock(&adapter->fsf_req_list_lock);
} else
debug_text_event(adapter->erp_dbf, 3, "a_ca_noreq");
@@ -2286,12 +2282,12 @@ zfcp_erp_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *erp_action)
{
int retval = ZFCP_ERP_SUCCEEDED;
int retries;
+ int sleep = ZFCP_EXCHANGE_CONFIG_DATA_FIRST_SLEEP;
struct zfcp_adapter *adapter = erp_action->adapter;
atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, &adapter->status);
- retries = ZFCP_EXCHANGE_CONFIG_DATA_RETRIES;
- do {
+ for (retries = ZFCP_EXCHANGE_CONFIG_DATA_RETRIES; retries; retries--) {
atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
&adapter->status);
ZFCP_LOG_DEBUG("Doing exchange config data\n");
@@ -2329,16 +2325,17 @@ zfcp_erp_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *erp_action)
zfcp_get_busid_by_adapter(adapter));
break;
}
- if (atomic_test_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
- &adapter->status)) {
- ZFCP_LOG_DEBUG("host connection still initialising... "
- "waiting and retrying...\n");
- /* sleep a little bit before retry */
- msleep(jiffies_to_msecs(ZFCP_EXCHANGE_CONFIG_DATA_SLEEP));
- }
- } while ((retries--) &&
- atomic_test_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
- &adapter->status));
+
+ if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+ &adapter->status))
+ break;
+
+ ZFCP_LOG_DEBUG("host connection still initialising... "
+ "waiting and retrying...\n");
+ /* sleep a little bit before retry */
+ msleep(jiffies_to_msecs(sleep));
+ sleep *= 2;
+ }
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
&adapter->status)) {
@@ -3485,6 +3482,45 @@ zfcp_erp_action_to_ready(struct zfcp_erp_action *erp_action)
}
/*
+ * function: zfcp_erp_port_boxed
+ *
+ * purpose:
+ */
+void
+zfcp_erp_port_boxed(struct zfcp_port *port)
+{
+ 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);
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED);
+}
+
+/*
+ * function: zfcp_erp_unit_boxed
+ *
+ * purpose:
+ */
+void
+zfcp_erp_unit_boxed(struct zfcp_unit *unit)
+{
+ 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);
+}
+
+/*
* function: zfcp_erp_port_access_denied
*
* purpose:
@@ -3495,11 +3531,13 @@ zfcp_erp_port_access_denied(struct zfcp_port *port)
struct zfcp_adapter *adapter = port->adapter;
unsigned long flags;
- debug_text_event(adapter->erp_dbf, 3, "p_access_block");
+ 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,
+ ZFCP_STATUS_COMMON_ERP_FAILED |
+ ZFCP_STATUS_COMMON_ACCESS_DENIED,
+ ZFCP_SET);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
@@ -3513,10 +3551,12 @@ zfcp_erp_unit_access_denied(struct zfcp_unit *unit)
{
struct zfcp_adapter *adapter = unit->port->adapter;
- debug_text_event(adapter->erp_dbf, 3, "u_access_block");
+ 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,
+ ZFCP_STATUS_COMMON_ERP_FAILED |
+ ZFCP_STATUS_COMMON_ACCESS_DENIED,
+ ZFCP_SET);
}
/*
@@ -3530,7 +3570,7 @@ zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter)
struct zfcp_port *port;
unsigned long flags;
- debug_text_event(adapter->erp_dbf, 3, "a_access_unblock");
+ debug_text_event(adapter->erp_dbf, 3, "a_access_recover");
debug_event(adapter->erp_dbf, 3, &adapter->name, 8);
read_lock_irqsave(&zfcp_data.config_lock, flags);
@@ -3553,10 +3593,12 @@ zfcp_erp_port_access_changed(struct zfcp_port *port)
struct zfcp_adapter *adapter = port->adapter;
struct zfcp_unit *unit;
- debug_text_event(adapter->erp_dbf, 3, "p_access_unblock");
+ 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)
@@ -3583,10 +3625,13 @@ zfcp_erp_unit_access_changed(struct zfcp_unit *unit)
{
struct zfcp_adapter *adapter = unit->port->adapter;
- debug_text_event(adapter->erp_dbf, 3, "u_access_unblock");
+ 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))
+ if (!atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED,
+ &unit->status) &&
+ !atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_BOXED,
+ &unit->status))
return;
ZFCP_LOG_NORMAL("reopen of unit 0x%016Lx on port 0x%016Lx "
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-14 19:39:05 +0000