[SCSI] scsi_transport_iscsi: Added support to show port_state and port_speed in sysfs
sysfs patch to view port_state:
/sys/class/iscsi_host/host*/port_state
sysfs patch to view port_speed:
/sys/class/iscsi_host/host*/port_speed
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index cfd4914..97832a2 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -2476,12 +2476,16 @@
iscsi_host_attr(hwaddress, ISCSI_HOST_PARAM_HWADDRESS);
iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS);
iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME);
+iscsi_host_attr(port_state, ISCSI_HOST_PARAM_PORT_STATE);
+iscsi_host_attr(port_speed, ISCSI_HOST_PARAM_PORT_SPEED);
static struct attribute *iscsi_host_attrs[] = {
&dev_attr_host_netdev.attr,
&dev_attr_host_hwaddress.attr,
&dev_attr_host_ipaddress.attr,
&dev_attr_host_initiatorname.attr,
+ &dev_attr_host_port_state.attr,
+ &dev_attr_host_port_speed.attr,
NULL,
};
@@ -2501,6 +2505,10 @@
param = ISCSI_HOST_PARAM_IPADDRESS;
else if (attr == &dev_attr_host_initiatorname.attr)
param = ISCSI_HOST_PARAM_INITIATOR_NAME;
+ else if (attr == &dev_attr_host_port_state.attr)
+ param = ISCSI_HOST_PARAM_PORT_STATE;
+ else if (attr == &dev_attr_host_port_speed.attr)
+ param = ISCSI_HOST_PARAM_PORT_SPEED;
else {
WARN_ONCE(1, "Invalid host attr");
return 0;
@@ -2514,6 +2522,61 @@
.is_visible = iscsi_host_attr_is_visible,
};
+/* convert iscsi_port_speed values to ascii string name */
+static const struct {
+ enum iscsi_port_speed value;
+ char *name;
+} iscsi_port_speed_names[] = {
+ {ISCSI_PORT_SPEED_UNKNOWN, "Unknown" },
+ {ISCSI_PORT_SPEED_10MBPS, "10 Mbps" },
+ {ISCSI_PORT_SPEED_100MBPS, "100 Mbps" },
+ {ISCSI_PORT_SPEED_1GBPS, "1 Gbps" },
+ {ISCSI_PORT_SPEED_10GBPS, "10 Gbps" },
+};
+
+char *iscsi_get_port_speed_name(struct Scsi_Host *shost)
+{
+ int i;
+ char *speed = "Unknown!";
+ struct iscsi_cls_host *ihost = shost->shost_data;
+ uint32_t port_speed = ihost->port_speed;
+
+ for (i = 0; i < ARRAY_SIZE(iscsi_port_speed_names); i++) {
+ if (iscsi_port_speed_names[i].value & port_speed) {
+ speed = iscsi_port_speed_names[i].name;
+ break;
+ }
+ }
+ return speed;
+}
+EXPORT_SYMBOL_GPL(iscsi_get_port_speed_name);
+
+/* convert iscsi_port_state values to ascii string name */
+static const struct {
+ enum iscsi_port_state value;
+ char *name;
+} iscsi_port_state_names[] = {
+ {ISCSI_PORT_STATE_DOWN, "LINK DOWN" },
+ {ISCSI_PORT_STATE_UP, "LINK UP" },
+};
+
+char *iscsi_get_port_state_name(struct Scsi_Host *shost)
+{
+ int i;
+ char *state = "Unknown!";
+ struct iscsi_cls_host *ihost = shost->shost_data;
+ uint32_t port_state = ihost->port_state;
+
+ for (i = 0; i < ARRAY_SIZE(iscsi_port_state_names); i++) {
+ if (iscsi_port_state_names[i].value & port_state) {
+ state = iscsi_port_state_names[i].name;
+ break;
+ }
+ }
+ return state;
+}
+EXPORT_SYMBOL_GPL(iscsi_get_port_state_name);
+
static int iscsi_session_match(struct attribute_container *cont,
struct device *dev)
{
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index 2703e3b..e49b7c8 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -416,9 +416,26 @@
ISCSI_HOST_PARAM_INITIATOR_NAME,
ISCSI_HOST_PARAM_NETDEV_NAME,
ISCSI_HOST_PARAM_IPADDRESS,
+ ISCSI_HOST_PARAM_PORT_STATE,
+ ISCSI_HOST_PARAM_PORT_SPEED,
ISCSI_HOST_PARAM_MAX,
};
+/* iSCSI port Speed */
+enum iscsi_port_speed {
+ ISCSI_PORT_SPEED_UNKNOWN = 0x1,
+ ISCSI_PORT_SPEED_10MBPS = 0x2,
+ ISCSI_PORT_SPEED_100MBPS = 0x4,
+ ISCSI_PORT_SPEED_1GBPS = 0x8,
+ ISCSI_PORT_SPEED_10GBPS = 0x10,
+};
+
+/* iSCSI port state */
+enum iscsi_port_state {
+ ISCSI_PORT_STATE_DOWN = 0x1,
+ ISCSI_PORT_STATE_UP = 0x2,
+};
+
#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index 2c3a46d..fa7ca4e 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -238,6 +238,8 @@
atomic_t nr_scans;
struct mutex mutex;
struct request_queue *bsg_q;
+ uint32_t port_speed;
+ uint32_t port_state;
};
#define iscsi_job_to_shost(_job) \
@@ -307,5 +309,7 @@
uint32_t iface_num, int dd_size);
extern void iscsi_destroy_iface(struct iscsi_iface *iface);
extern struct iscsi_iface *iscsi_lookup_iface(int handle);
+extern char *iscsi_get_port_speed_name(struct Scsi_Host *shost);
+extern char *iscsi_get_port_state_name(struct Scsi_Host *shost);
#endif