[SCSI] zfcp: handle unsolicited status notification lost

Handle unsolicited adapter status that informs about loss of
previous unsolicited status notification(s).

Signed-off-by: Maxim Shchetynin <maxim@de.ibm.com>
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 59587951c847cae2a6eb48baadaa3d64ba0136b4..bf859c9982dfb1481c7e26eace8dbabd20e5efda 100644 (file)
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -964,6 +964,40 @@ zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req)
                                        | ZFCP_STATUS_COMMON_ERP_FAILED);
                break;
 
+       case FSF_STATUS_READ_NOTIFICATION_LOST:
+               ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: "
+                               "adapter %s%s%s%s%s%s%s%s%s\n",
+                               zfcp_get_busid_by_adapter(adapter),
+                               (status_buffer->status_subtype &
+                                       FSF_STATUS_READ_SUB_INCOMING_ELS) ?
+                                       ", incoming ELS" : "",
+                               (status_buffer->status_subtype &
+                                       FSF_STATUS_READ_SUB_SENSE_DATA) ?
+                                       ", sense data" : "",
+                               (status_buffer->status_subtype &
+                                       FSF_STATUS_READ_SUB_LINK_STATUS) ?
+                                       ", link status change" : "",
+                               (status_buffer->status_subtype &
+                                       FSF_STATUS_READ_SUB_PORT_CLOSED) ?
+                                       ", port close" : "",
+                               (status_buffer->status_subtype &
+                                       FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ?
+                                       ", bit error exception" : "",
+                               (status_buffer->status_subtype &
+                                       FSF_STATUS_READ_SUB_ACT_UPDATED) ?
+                                       ", ACT update" : "",
+                               (status_buffer->status_subtype &
+                                       FSF_STATUS_READ_SUB_ACT_HARDENED) ?
+                                       ", ACT hardening" : "",
+                               (status_buffer->status_subtype &
+                                       FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ?
+                                       ", adapter feature change" : "");
+
+               if (status_buffer->status_subtype &
+                   FSF_STATUS_READ_SUB_ACT_UPDATED)
+                       zfcp_erp_adapter_access_changed(adapter);
+               break;
+
        case FSF_STATUS_READ_CFDC_UPDATED:
                ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n",
                              zfcp_get_busid_by_adapter(adapter));
@@ -1954,6 +1988,7 @@ zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
        erp_action->fsf_req->qtcb->bottom.config.feature_selection =
                        FSF_FEATURE_CFDC |
                        FSF_FEATURE_LUN_SHARING |
+                       FSF_FEATURE_NOTIFICATION_LOST |
                        FSF_FEATURE_UPDATE_ALERT;
 
        /* start QDIO request for this FSF request */

diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h
index 48719f0559527b93eef93c442087d6517bc5f9fd..39475dbcb61430c13a7dca1ea3c09f0c4a80a74b 100644 (file)
--- a/drivers/s390/scsi/zfcp_fsf.h
+++ b/drivers/s390/scsi/zfcp_fsf.h
@@ -166,6 +166,7 @@
 #define FSF_STATUS_READ_BIT_ERROR_THRESHOLD    0x00000004
 #define FSF_STATUS_READ_LINK_DOWN              0x00000005
 #define FSF_STATUS_READ_LINK_UP                0x00000006
+#define FSF_STATUS_READ_NOTIFICATION_LOST      0x00000009
 #define FSF_STATUS_READ_CFDC_UPDATED           0x0000000A
 #define FSF_STATUS_READ_CFDC_HARDENED          0x0000000B
 #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT   0x0000000C
@@ -179,6 +180,16 @@
 #define FSF_STATUS_READ_SUB_FDISC_FAILED       0x00000001
 #define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE    0x00000002
 
+/* status subtypes for unsolicited status notification lost */
+#define FSF_STATUS_READ_SUB_INCOMING_ELS       0x00000001
+#define FSF_STATUS_READ_SUB_SENSE_DATA         0x00000002
+#define FSF_STATUS_READ_SUB_LINK_STATUS                0x00000004
+#define FSF_STATUS_READ_SUB_PORT_CLOSED                0x00000008
+#define FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD        0x00000010
+#define FSF_STATUS_READ_SUB_ACT_UPDATED                0x00000020
+#define FSF_STATUS_READ_SUB_ACT_HARDENED       0x00000040
+#define FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT 0x00000080
+
 /* status subtypes for CFDC */
 #define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE        0x00000002
 #define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2 0x0000000F
@@ -211,6 +222,7 @@
 /* channel features */
 #define FSF_FEATURE_CFDC                       0x00000002
 #define FSF_FEATURE_LUN_SHARING                        0x00000004
+#define FSF_FEATURE_NOTIFICATION_LOST          0x00000008
 #define FSF_FEATURE_HBAAPI_MANAGEMENT           0x00000010
 #define FSF_FEATURE_ELS_CT_CHAINED_SBALS        0x00000020
 #define FSF_FEATURE_UPDATE_ALERT               0x00000100