[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>

2 files changed, 21 insertions, 0 deletions

diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index 2703e3bedbf5..e49b7c8dd217 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -416,9 +416,26 @@ enum iscsi_host_param {
         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 2c3a46d102fd..fa7ca4e16020 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -238,6 +238,8 @@ struct iscsi_cls_host {
         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 @@ extern struct iscsi_iface *iscsi_create_iface(struct Scsi_Host *shost,
                                               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