static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *);
static int zfcp_scsi_eh_bus_reset_handler(struct scsi_cmnd *);
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *);
-static int zfcp_task_management_function(struct zfcp_unit *, u8);
+static int zfcp_task_management_function(struct zfcp_unit *, u8,
+ struct scsi_cmnd *);
static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *, int, scsi_id_t,
scsi_lun_t);
-static struct zfcp_port *zfcp_port_lookup(struct zfcp_adapter *, int,
- scsi_id_t);
static struct device_attribute *zfcp_sysfs_sdev_attrs[];
struct zfcp_adapter *adapter;
struct zfcp_unit *unit;
unsigned long flags;
- int retval = -ENODEV;
+ int retval = -ENXIO;
adapter = (struct zfcp_adapter *) sdp->host->hostdata[0];
if (!adapter)
zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
{
set_host_byte(&scpnt->result, result);
- zfcp_cmd_dbf_event_scsi("failing", scpnt);
+ if ((scpnt->device != NULL) && (scpnt->device->host != NULL))
+ zfcp_scsi_dbf_event_result("fail", 4,
+ (struct zfcp_adapter*) scpnt->device->host->hostdata[0],
+ scpnt);
/* return directly */
scpnt->scsi_done(scpnt);
}
return retval;
}
-static struct zfcp_port *
-zfcp_port_lookup(struct zfcp_adapter *adapter, int channel, scsi_id_t id)
-{
- struct zfcp_port *port;
-
- list_for_each_entry(port, &adapter->port_list_head, list) {
- if (port->rport && (id == port->rport->scsi_target_id))
- return port;
- }
- return (struct zfcp_port *) NULL;
-}
-
/**
* zfcp_scsi_eh_abort_handler - abort the specified SCSI command
* @scpnt: pointer to scsi_cmnd to be aborted
struct zfcp_adapter *adapter;
struct zfcp_unit *unit;
int retval = SUCCESS;
- struct zfcp_fsf_req *new_fsf_req, *old_fsf_req;
+ struct zfcp_fsf_req *new_fsf_req = NULL;
+ struct zfcp_fsf_req *old_fsf_req;
unsigned long flags;
scsi_host = scpnt->device->host;
old_fsf_req = (struct zfcp_fsf_req *) scpnt->host_scribble;
if (!old_fsf_req) {
write_unlock_irqrestore(&adapter->abort_lock, flags);
- ZFCP_LOG_NORMAL("bug: no old fsf request found\n");
- ZFCP_LOG_NORMAL("scsi_cmnd:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
- (char *) scpnt, sizeof (struct scsi_cmnd));
- retval = FAILED;
+ zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, new_fsf_req);
+ retval = SUCCESS;
goto out;
}
old_fsf_req->data = 0;
new_fsf_req = zfcp_fsf_abort_fcp_command((unsigned long) old_fsf_req,
adapter, unit, 0);
if (!new_fsf_req) {
+ ZFCP_LOG_INFO("error: initiation of Abort FCP Cmnd failed\n");
retval = FAILED;
- ZFCP_LOG_NORMAL("error: initiation of Abort FCP Cmnd "
- "failed\n");
goto out;
}
/* wait for completion of abort */
__wait_event(new_fsf_req->completion_wq,
new_fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
- zfcp_fsf_req_free(new_fsf_req);
/* status should be valid since signals were not permitted */
if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) {
+ zfcp_scsi_dbf_event_abort("okay", adapter, scpnt, new_fsf_req);
retval = SUCCESS;
} else if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) {
+ zfcp_scsi_dbf_event_abort("lte2", adapter, scpnt, new_fsf_req);
retval = SUCCESS;
} else {
+ zfcp_scsi_dbf_event_abort("fail", adapter, scpnt, new_fsf_req);
retval = FAILED;
}
+ zfcp_fsf_req_free(new_fsf_req);
out:
return retval;
}
*/
if (!atomic_test_mask(ZFCP_STATUS_UNIT_NOTSUPPUNITRESET,
&unit->status)) {
- retval =
- zfcp_task_management_function(unit, FCP_LOGICAL_UNIT_RESET);
+ retval = zfcp_task_management_function(unit,
+ FCP_LOGICAL_UNIT_RESET,
+ scpnt);
if (retval) {
ZFCP_LOG_DEBUG("unit reset failed (unit=%p)\n", unit);
if (retval == -ENOTSUPP)
goto out;
}
}
- retval = zfcp_task_management_function(unit, FCP_TARGET_RESET);
+ retval = zfcp_task_management_function(unit, FCP_TARGET_RESET, scpnt);
if (retval) {
ZFCP_LOG_DEBUG("target reset failed (unit=%p)\n", unit);
retval = FAILED;
}
static int
-zfcp_task_management_function(struct zfcp_unit *unit, u8 tm_flags)
+zfcp_task_management_function(struct zfcp_unit *unit, u8 tm_flags,
+ struct scsi_cmnd *scpnt)
{
struct zfcp_adapter *adapter = unit->port->adapter;
struct zfcp_fsf_req *fsf_req;
"failed for unit 0x%016Lx on port 0x%016Lx on "
"adapter %s\n", unit->fcp_lun, unit->port->wwpn,
zfcp_get_busid_by_adapter(adapter));
+ zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit, scpnt);
retval = -ENOMEM;
goto out;
}
__wait_event(fsf_req->completion_wq,
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
- /* check completion status of task management function */
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED)
+ /*
+ * check completion status of task management function
+ */
+ if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
+ zfcp_scsi_dbf_event_devreset("fail", tm_flags, unit, scpnt);
retval = -EIO;
- else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP)
+ } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) {
+ zfcp_scsi_dbf_event_devreset("nsup", tm_flags, unit, scpnt);
retval = -ENOTSUPP;
+ } else
+ zfcp_scsi_dbf_event_devreset("okay", tm_flags, unit, scpnt);
zfcp_fsf_req_free(fsf_req);
out:
return retval;
}
-/*
- * function: zfcp_scsi_eh_bus_reset_handler
- *
- * purpose:
- *
- * returns:
+/**
+ * zfcp_scsi_eh_bus_reset_handler - reset bus (reopen adapter)
*/
int
zfcp_scsi_eh_bus_reset_handler(struct scsi_cmnd *scpnt)
{
- int retval = 0;
- struct zfcp_unit *unit;
+ struct zfcp_unit *unit = (struct zfcp_unit*) scpnt->device->hostdata;
+ struct zfcp_adapter *adapter = unit->port->adapter;
- unit = (struct zfcp_unit *) scpnt->device->hostdata;
ZFCP_LOG_NORMAL("bus reset because of problems with "
"unit 0x%016Lx\n", unit->fcp_lun);
- zfcp_erp_adapter_reopen(unit->port->adapter, 0);
- zfcp_erp_wait(unit->port->adapter);
- retval = SUCCESS;
+ zfcp_erp_adapter_reopen(adapter, 0);
+ zfcp_erp_wait(adapter);
- return retval;
+ return SUCCESS;
}
-/*
- * function: zfcp_scsi_eh_host_reset_handler
- *
- * purpose:
- *
- * returns:
+/**
+ * zfcp_scsi_eh_host_reset_handler - reset host (reopen adapter)
*/
int
zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
- int retval = 0;
- struct zfcp_unit *unit;
+ struct zfcp_unit *unit = (struct zfcp_unit*) scpnt->device->hostdata;
+ struct zfcp_adapter *adapter = unit->port->adapter;
- unit = (struct zfcp_unit *) scpnt->device->hostdata;
ZFCP_LOG_NORMAL("host reset because of problems with "
"unit 0x%016Lx\n", unit->fcp_lun);
- zfcp_erp_adapter_reopen(unit->port->adapter, 0);
- zfcp_erp_wait(unit->port->adapter);
- retval = SUCCESS;
+ zfcp_erp_adapter_reopen(adapter, 0);
+ zfcp_erp_wait(adapter);
- return retval;
+ return SUCCESS;
}
/*
zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter)
{
struct Scsi_Host *shost;
+ struct zfcp_port *port;
shost = adapter->scsi_host;
if (!shost)
return;
+ read_lock_irq(&zfcp_data.config_lock);
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if (port->rport)
+ port->rport = NULL;
+ read_unlock_irq(&zfcp_data.config_lock);
fc_remove_host(shost);
scsi_remove_host(shost);
scsi_host_put(shost);
/*
* Support functions for FC transport class
*/
-static void
-zfcp_get_port_id(struct scsi_target *starget)
+static struct fc_host_statistics*
+zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
{
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- struct zfcp_adapter *adapter = (struct zfcp_adapter *)shost->hostdata[0];
- struct zfcp_port *port;
- unsigned long flags;
+ struct fc_host_statistics *fc_stats;
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- port = zfcp_port_lookup(adapter, starget->channel, starget->id);
- if (port)
- fc_starget_port_id(starget) = port->d_id;
- else
- fc_starget_port_id(starget) = -1;
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ if (!adapter->fc_stats) {
+ fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
+ if (!fc_stats)
+ return NULL;
+ adapter->fc_stats = fc_stats; /* freed in adater_dequeue */
+ }
+ memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
+ return adapter->fc_stats;
}
static void
-zfcp_get_port_name(struct scsi_target *starget)
+zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
+ struct fsf_qtcb_bottom_port *data,
+ struct fsf_qtcb_bottom_port *old)
{
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- struct zfcp_adapter *adapter = (struct zfcp_adapter *)shost->hostdata[0];
- struct zfcp_port *port;
- unsigned long flags;
-
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- port = zfcp_port_lookup(adapter, starget->channel, starget->id);
- if (port)
- fc_starget_port_name(starget) = port->wwpn;
- else
- fc_starget_port_name(starget) = -1;
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ fc_stats->seconds_since_last_reset = data->seconds_since_last_reset -
+ old->seconds_since_last_reset;
+ fc_stats->tx_frames = data->tx_frames - old->tx_frames;
+ fc_stats->tx_words = data->tx_words - old->tx_words;
+ fc_stats->rx_frames = data->rx_frames - old->rx_frames;
+ fc_stats->rx_words = data->rx_words - old->rx_words;
+ fc_stats->lip_count = data->lip - old->lip;
+ fc_stats->nos_count = data->nos - old->nos;
+ fc_stats->error_frames = data->error_frames - old->error_frames;
+ fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
+ fc_stats->link_failure_count = data->link_failure - old->link_failure;
+ fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
+ fc_stats->loss_of_signal_count = data->loss_of_signal -
+ old->loss_of_signal;
+ fc_stats->prim_seq_protocol_err_count = data->psp_error_counts -
+ old->psp_error_counts;
+ fc_stats->invalid_tx_word_count = data->invalid_tx_words -
+ old->invalid_tx_words;
+ fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
+ fc_stats->fcp_input_requests = data->input_requests -
+ old->input_requests;
+ fc_stats->fcp_output_requests = data->output_requests -
+ old->output_requests;
+ fc_stats->fcp_control_requests = data->control_requests -
+ old->control_requests;
+ fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
+ fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
}
static void
-zfcp_get_node_name(struct scsi_target *starget)
+zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
+ struct fsf_qtcb_bottom_port *data)
{
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- struct zfcp_adapter *adapter = (struct zfcp_adapter *)shost->hostdata[0];
- struct zfcp_port *port;
- unsigned long flags;
+ fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
+ fc_stats->tx_frames = data->tx_frames;
+ fc_stats->tx_words = data->tx_words;
+ fc_stats->rx_frames = data->rx_frames;
+ fc_stats->rx_words = data->rx_words;
+ fc_stats->lip_count = data->lip;
+ fc_stats->nos_count = data->nos;
+ fc_stats->error_frames = data->error_frames;
+ fc_stats->dumped_frames = data->dumped_frames;
+ fc_stats->link_failure_count = data->link_failure;
+ fc_stats->loss_of_sync_count = data->loss_of_sync;
+ fc_stats->loss_of_signal_count = data->loss_of_signal;
+ fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
+ fc_stats->invalid_tx_word_count = data->invalid_tx_words;
+ fc_stats->invalid_crc_count = data->invalid_crcs;
+ fc_stats->fcp_input_requests = data->input_requests;
+ fc_stats->fcp_output_requests = data->output_requests;
+ fc_stats->fcp_control_requests = data->control_requests;
+ fc_stats->fcp_input_megabytes = data->input_mb;
+ fc_stats->fcp_output_megabytes = data->output_mb;
+}
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- port = zfcp_port_lookup(adapter, starget->channel, starget->id);
- if (port)
- fc_starget_node_name(starget) = port->wwnn;
- else
- fc_starget_node_name(starget) = -1;
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+/**
+ * zfcp_get_fc_host_stats - provide fc_host_statistics for scsi_transport_fc
+ *
+ * assumption: scsi_transport_fc synchronizes calls of
+ * get_fc_host_stats and reset_fc_host_stats
+ * (XXX to be checked otherwise introduce locking)
+ */
+static struct fc_host_statistics *
+zfcp_get_fc_host_stats(struct Scsi_Host *shost)
+{
+ struct zfcp_adapter *adapter;
+ struct fc_host_statistics *fc_stats;
+ struct fsf_qtcb_bottom_port *data;
+ int ret;
+
+ adapter = (struct zfcp_adapter *)shost->hostdata[0];
+ fc_stats = zfcp_init_fc_host_stats(adapter);
+ if (!fc_stats)
+ return NULL;
+
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return NULL;
+ memset(data, 0, sizeof(*data));
+
+ ret = zfcp_fsf_exchange_port_data(NULL, adapter, data);
+ if (ret) {
+ kfree(data);
+ return NULL; /* XXX return zeroed fc_stats? */
+ }
+
+ if (adapter->stats_reset &&
+ ((jiffies/HZ - adapter->stats_reset) <
+ data->seconds_since_last_reset)) {
+ zfcp_adjust_fc_host_stats(fc_stats, data,
+ adapter->stats_reset_data);
+ } else
+ zfcp_set_fc_host_stats(fc_stats, data);
+
+ kfree(data);
+ return fc_stats;
}
-void
-zfcp_set_fc_host_attrs(struct zfcp_adapter *adapter)
+static void
+zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
{
- struct Scsi_Host *shost = adapter->scsi_host;
+ struct zfcp_adapter *adapter;
+ struct fsf_qtcb_bottom_port *data, *old_data;
+ int ret;
- fc_host_node_name(shost) = adapter->wwnn;
- fc_host_port_name(shost) = adapter->wwpn;
- strncpy(fc_host_serial_number(shost), adapter->serial_number,
- min(FC_SERIAL_NUMBER_SIZE, 32));
- fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
+ adapter = (struct zfcp_adapter *)shost->hostdata[0];
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return;
+ memset(data, 0, sizeof(*data));
+
+ ret = zfcp_fsf_exchange_port_data(NULL, adapter, data);
+ if (ret == 0) {
+ adapter->stats_reset = jiffies/HZ;
+ old_data = adapter->stats_reset_data;
+ adapter->stats_reset_data = data; /* finally freed in
+ adater_dequeue */
+ kfree(old_data);
+ }
}
struct fc_function_template zfcp_transport_functions = {
- .get_starget_port_id = zfcp_get_port_id,
- .get_starget_port_name = zfcp_get_port_name,
- .get_starget_node_name = zfcp_get_node_name,
.show_starget_port_id = 1,
.show_starget_port_name = 1,
.show_starget_node_name = 1,
.show_host_node_name = 1,
.show_host_port_name = 1,
.show_host_supported_classes = 1,
+ .show_host_maxframe_size = 1,
.show_host_serial_number = 1,
+ .get_fc_host_stats = zfcp_get_fc_host_stats,
+ .reset_fc_host_stats = zfcp_reset_fc_host_stats,
+ /* no functions registered for following dynamic attributes but
+ directly set by LLDD */
+ .show_host_speed = 1,
+ .show_host_port_id = 1,
};
/**
projects / deliverable / linux.git / blobdiff