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authorSven Schuetz <sven@linux.vnet.ibm.com>2008-06-10 18:20:59 +0200
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-07-12 08:22:26 -0500
commit85a82392fe6fe7620d8fe0eb694f926cefe62e1f (patch)
treef05a7ad547ca8eed52fa4cca1a424a881b7b733b /drivers/s390/scsi
parent553448f6c4838a1e4bed2bc9301c748278d7d9ce (diff)
[SCSI] zfcp: Add port_state attribute to sysfs
The sysfs attribute /sys/class/fc_host/hostX/port_state was not set by zfcp so far. Now, the appropriate members of the fc_function_template struct are set during its initialziation. The first is a boolean to show the port state. The second is a function pointer to the function zfcp_get_host_port_state, which reads the port state from our adapter status bits and calls fc_host_port_state with the approriate port state afterwards. Signed-off-by: Sven Schuetz <sven@linux.vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/s390/scsi')
-rw-r--r--drivers/s390/scsi/zfcp_scsi.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index a96e5c3b946..446fb1da25d 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -704,6 +704,23 @@ zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
}
}
+static void zfcp_get_host_port_state(struct Scsi_Host *shost)
+{
+ struct zfcp_adapter *adapter =
+ (struct zfcp_adapter *)shost->hostdata[0];
+ int status = atomic_read(&adapter->status);
+
+ if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
+ !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
+ fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
+ else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
+ fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
+ else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
+ fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
+ else
+ fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
+}
+
static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
{
rport->dev_loss_tmo = timeout;
@@ -726,6 +743,8 @@ struct fc_function_template zfcp_transport_functions = {
.get_fc_host_stats = zfcp_get_fc_host_stats,
.reset_fc_host_stats = zfcp_reset_fc_host_stats,
.set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
+ .get_host_port_state = zfcp_get_host_port_state,
+ .show_host_port_state = 1,
/* no functions registered for following dynamic attributes but
directly set by LLDD */
.show_host_port_type = 1,