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[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>
This commit is contained in:
Vikas Chaudhary 2012-01-19 03:06:55 -08:00 committed by James Bottomley
parent 6c1b8789b0
commit aeddde2978
3 changed files with 84 additions and 0 deletions
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63
drivers/scsi/scsi_transport_iscsi.c
View File

@ -2476,12 +2476,16 @@ iscsi_host_attr(netdev, ISCSI_HOST_PARAM_NETDEV_NAME);
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 @@ static umode_t iscsi_host_attr_is_visible(struct kobject *kobj,
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 @@ static struct attribute_group iscsi_host_group = {
.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)
{

17
include/scsi/iscsi_if.h
View File

@ -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)

4
include/scsi/scsi_transport_iscsi.h
View File

@ -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