1 files changed, 83 insertions, 38 deletions

diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 53ebc1cd..0cf31f7 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 "