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| author | Julian Wiedmann <jwi@linux.ibm.com> | 2020-10-28 21:30:52 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-10-30 05:17:01 +0300 |
| commit | d90196317484b69bb46b7144c6e0e1a4f581200d (patch) | |
| tree | cb1f581221ed72c3e4e4ef1221ef5e2dbf4e5842 /drivers/s390/scsi | |
| parent | a6c37abe6988eb33a5f301e252ee41ed22b8df8d (diff) | |
| download | linux-d90196317484b69bb46b7144c6e0e1a4f581200d.tar.xz | |
scsi: zfcp: Handle event-lost notification for Version Change events
As recovery for a lost Version Change event, trigger an Exchange Config
Data cmd to retrieve the current FW version.
Doing so requires process context (as eg. zfcp_qdio_sbal_get() might need
to sleep), so defer from tasklet context into a work item.
Link: https://lore.kernel.org/r/297c7be2944c3714863fcd22d531d910312d29f0.1603908167.git.bblock@linux.ibm.com
Suggested-by: Steffen Maier <maier@linux.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/s390/scsi')
| -rw-r--r-- | drivers/s390/scsi/zfcp_aux.c | 11 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_def.h | 1 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 3 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.h | 1 |
4 files changed, 16 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 18b713a616de..768873dd55b8 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -292,6 +292,14 @@ static void _zfcp_status_read_scheduler(struct work_struct *work) stat_work)); } +static void zfcp_version_change_lost_work(struct work_struct *work) +{ + struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter, + version_change_lost_work); + + zfcp_fsf_exchange_config_data_sync(adapter->qdio, NULL); +} + static void zfcp_print_sl(struct seq_file *m, struct service_level *sl) { struct zfcp_adapter *adapter = @@ -353,6 +361,8 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device) INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler); INIT_DELAYED_WORK(&adapter->scan_work, zfcp_fc_scan_ports); INIT_WORK(&adapter->ns_up_work, zfcp_fc_sym_name_update); + INIT_WORK(&adapter->version_change_lost_work, + zfcp_version_change_lost_work); adapter->next_port_scan = jiffies; @@ -429,6 +439,7 @@ void zfcp_adapter_unregister(struct zfcp_adapter *adapter) cancel_delayed_work_sync(&adapter->scan_work); cancel_work_sync(&adapter->stat_work); cancel_work_sync(&adapter->ns_up_work); + cancel_work_sync(&adapter->version_change_lost_work); zfcp_destroy_adapter_work_queue(adapter); zfcp_fc_wka_ports_force_offline(adapter->gs); diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index da8a5ceb615c..f656d74a5f94 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -201,6 +201,7 @@ struct zfcp_adapter { struct zfcp_fc_events events; unsigned long next_port_scan; struct zfcp_diag_adapter *diagnostics; + struct work_struct version_change_lost_work; }; struct zfcp_port { diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index afa95e04eceb..7593a9667b3e 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -309,6 +309,9 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) case FSF_STATUS_READ_NOTIFICATION_LOST: if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) zfcp_fc_conditional_port_scan(adapter); + if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_VERSION_CHANGE) + queue_work(adapter->work_queue, + &adapter->version_change_lost_work); break; case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: adapter->adapter_features = sr_buf->payload.word[0]; diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h index 26ad7a0c5ce3..5e6b601af980 100644 --- a/drivers/s390/scsi/zfcp_fsf.h +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -143,6 +143,7 @@ /* status subtypes for unsolicited status notification lost */ #define FSF_STATUS_READ_SUB_INCOMING_ELS 0x00000001 +#define FSF_STATUS_READ_SUB_VERSION_CHANGE 0x00000100 /* status subtypes for version change */ #define FSF_STATUS_READ_SUB_LIC_CHANGE 0x00000001 |