[SCSI] iscsi class: sysfs group is_visible callout for iscsi host attrs
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and driver's host attrs to use the attribute
container sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 4f24112..84e8c29 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -635,6 +635,15 @@
static mode_t iser_attr_is_visible(int param_type, int param)
{
switch (param_type) {
+ case ISCSI_HOST_PARAM:
+ switch (param) {
+ case ISCSI_HOST_PARAM_NETDEV_NAME:
+ case ISCSI_HOST_PARAM_HWADDRESS:
+ case ISCSI_HOST_PARAM_INITIATOR_NAME:
+ return S_IRUGO;
+ default:
+ return 0;
+ }
case ISCSI_PARAM:
switch (param) {
case ISCSI_PARAM_MAX_RECV_DLENGTH:
@@ -697,9 +706,6 @@
.owner = THIS_MODULE,
.name = "iser",
.caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T,
- .host_param_mask = ISCSI_HOST_HWADDRESS |
- ISCSI_HOST_NETDEV_NAME |
- ISCSI_HOST_INITIATOR_NAME,
/* session management */
.create_session = iscsi_iser_session_create,
.destroy_session = iscsi_iser_session_destroy,
diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index ecd19bb..feadaa2 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -737,6 +737,15 @@
mode_t be2iscsi_attr_is_visible(int param_type, int param)
{
switch (param_type) {
+ case ISCSI_HOST_PARAM:
+ switch (param) {
+ case ISCSI_HOST_PARAM_HWADDRESS:
+ case ISCSI_HOST_PARAM_IPADDRESS:
+ case ISCSI_HOST_PARAM_INITIATOR_NAME:
+ return S_IRUGO;
+ default:
+ return 0;
+ }
case ISCSI_PARAM:
switch (param) {
case ISCSI_PARAM_MAX_RECV_DLENGTH:
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 93a3c70..72ac64b 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -4364,8 +4364,6 @@
.name = DRV_NAME,
.caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |
CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,
- .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
- ISCSI_HOST_INITIATOR_NAME,
.create_session = beiscsi_session_create,
.destroy_session = beiscsi_session_destroy,
.create_conn = beiscsi_conn_create,
diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c
index 2db3399..d1e6971 100644
--- a/drivers/scsi/bnx2i/bnx2i_iscsi.c
+++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c
@@ -2180,6 +2180,15 @@
static mode_t bnx2i_attr_is_visible(int param_type, int param)
{
switch (param_type) {
+ case ISCSI_HOST_PARAM:
+ switch (param) {
+ case ISCSI_HOST_PARAM_NETDEV_NAME:
+ case ISCSI_HOST_PARAM_HWADDRESS:
+ case ISCSI_HOST_PARAM_IPADDRESS:
+ return S_IRUGO;
+ default:
+ return 0;
+ }
case ISCSI_PARAM:
switch (param) {
case ISCSI_PARAM_MAX_RECV_DLENGTH:
@@ -2251,8 +2260,6 @@
CAP_MULTI_R2T | CAP_DATADGST |
CAP_DATA_PATH_OFFLOAD |
CAP_TEXT_NEGO,
- .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
- ISCSI_HOST_NETDEV_NAME,
.create_session = bnx2i_session_create,
.destroy_session = bnx2i_session_destroy,
.create_conn = bnx2i_conn_create,
diff --git a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
index 50d4e3f..f76185b 100644
--- a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
+++ b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
@@ -106,9 +106,6 @@
.caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST
| CAP_DATADGST | CAP_DIGEST_OFFLOAD |
CAP_PADDING_OFFLOAD | CAP_TEXT_NEGO,
- .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
- ISCSI_HOST_INITIATOR_NAME |
- ISCSI_HOST_NETDEV_NAME,
.attr_is_visible = cxgbi_attr_is_visible,
.get_host_param = cxgbi_get_host_param,
.set_host_param = cxgbi_set_host_param,
diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
index 72f19ef..628a698 100644
--- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
@@ -107,9 +107,6 @@
.caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST |
CAP_DATADGST | CAP_DIGEST_OFFLOAD |
CAP_PADDING_OFFLOAD | CAP_TEXT_NEGO,
- .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
- ISCSI_HOST_INITIATOR_NAME |
- ISCSI_HOST_NETDEV_NAME,
.attr_is_visible = cxgbi_attr_is_visible,
.get_host_param = cxgbi_get_host_param,
.set_host_param = cxgbi_set_host_param,
diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index f9c2ca0..67ded44 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -2569,6 +2569,16 @@
mode_t cxgbi_attr_is_visible(int param_type, int param)
{
switch (param_type) {
+ case ISCSI_HOST_PARAM:
+ switch (param) {
+ case ISCSI_HOST_PARAM_NETDEV_NAME:
+ case ISCSI_HOST_PARAM_HWADDRESS:
+ case ISCSI_HOST_PARAM_IPADDRESS:
+ case ISCSI_HOST_PARAM_INITIATOR_NAME:
+ return S_IRUGO;
+ default:
+ return 0;
+ }
case ISCSI_PARAM:
switch (param) {
case ISCSI_PARAM_MAX_RECV_DLENGTH:
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 6ab2122..23e7066 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -875,6 +875,16 @@
static mode_t iscsi_sw_tcp_attr_is_visible(int param_type, int param)
{
switch (param_type) {
+ case ISCSI_HOST_PARAM:
+ switch (param) {
+ case ISCSI_HOST_PARAM_NETDEV_NAME:
+ case ISCSI_HOST_PARAM_HWADDRESS:
+ case ISCSI_HOST_PARAM_IPADDRESS:
+ case ISCSI_HOST_PARAM_INITIATOR_NAME:
+ return S_IRUGO;
+ default:
+ return 0;
+ }
case ISCSI_PARAM:
switch (param) {
case ISCSI_PARAM_MAX_RECV_DLENGTH:
@@ -955,9 +965,6 @@
.name = "tcp",
.caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST
| CAP_DATADGST,
- .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
- ISCSI_HOST_INITIATOR_NAME |
- ISCSI_HOST_NETDEV_NAME,
/* session management */
.create_session = iscsi_sw_tcp_session_create,
.destroy_session = iscsi_sw_tcp_session_destroy,
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index df6da3c..a9da315 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -138,9 +138,6 @@
.name = DRIVER_NAME,
.caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD |
CAP_DATA_PATH_OFFLOAD,
- .host_param_mask = ISCSI_HOST_HWADDRESS |
- ISCSI_HOST_IPADDRESS |
- ISCSI_HOST_INITIATOR_NAME,
.tgt_dscvr = qla4xxx_tgt_dscvr,
.attr_is_visible = ql4_attr_is_visible,
.get_conn_param = qla4xxx_conn_get_param,
@@ -156,6 +153,15 @@
static mode_t ql4_attr_is_visible(int param_type, int param)
{
switch (param_type) {
+ case ISCSI_HOST_PARAM:
+ switch (param) {
+ case ISCSI_HOST_PARAM_HWADDRESS:
+ case ISCSI_HOST_PARAM_IPADDRESS:
+ case ISCSI_HOST_PARAM_INITIATOR_NAME:
+ return S_IRUGO;
+ default:
+ return 0;
+ }
case ISCSI_PARAM:
switch (param) {
case ISCSI_PARAM_CONN_ADDRESS:
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index a8dd85d..2e9b682 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -32,8 +32,6 @@
#include <scsi/iscsi_if.h>
#include <scsi/scsi_cmnd.h>
-#define ISCSI_HOST_ATTRS 4
-
#define ISCSI_TRANSPORT_VERSION "2.0-870"
static int dbg_session;
@@ -74,7 +72,6 @@
struct list_head list;
struct device dev;
- struct device_attribute *host_attrs[ISCSI_HOST_ATTRS + 1];
struct transport_container conn_cont;
struct transport_container session_cont;
};
@@ -2301,13 +2298,42 @@
iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS);
iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME);
-#define SETUP_HOST_RD_ATTR(field, param_flag) \
-do { \
- if (tt->host_param_mask & param_flag) { \
- priv->host_attrs[count] = &dev_attr_host_##field; \
- count++; \
- } \
-} while (0)
+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,
+ NULL,
+};
+
+static mode_t iscsi_host_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int i)
+{
+ struct device *cdev = container_of(kobj, struct device, kobj);
+ struct Scsi_Host *shost = transport_class_to_shost(cdev);
+ struct iscsi_internal *priv = to_iscsi_internal(shost->transportt);
+ int param;
+
+ if (attr == &dev_attr_host_netdev.attr)
+ param = ISCSI_HOST_PARAM_NETDEV_NAME;
+ else if (attr == &dev_attr_host_hwaddress.attr)
+ param = ISCSI_HOST_PARAM_HWADDRESS;
+ else if (attr == &dev_attr_host_ipaddress.attr)
+ param = ISCSI_HOST_PARAM_IPADDRESS;
+ else if (attr == &dev_attr_host_initiatorname.attr)
+ param = ISCSI_HOST_PARAM_INITIATOR_NAME;
+ else {
+ WARN_ONCE(1, "Invalid host attr");
+ return 0;
+ }
+
+ return priv->iscsi_transport->attr_is_visible(ISCSI_HOST_PARAM, param);
+}
+
+static struct attribute_group iscsi_host_group = {
+ .attrs = iscsi_host_attrs,
+ .is_visible = iscsi_host_attr_is_visible,
+};
static int iscsi_session_match(struct attribute_container *cont,
struct device *dev)
@@ -2379,7 +2405,7 @@
{
struct iscsi_internal *priv;
unsigned long flags;
- int count = 0, err;
+ int err;
BUG_ON(!tt);
@@ -2406,20 +2432,12 @@
goto unregister_dev;
/* host parameters */
- priv->t.host_attrs.ac.attrs = &priv->host_attrs[0];
priv->t.host_attrs.ac.class = &iscsi_host_class.class;
priv->t.host_attrs.ac.match = iscsi_host_match;
+ priv->t.host_attrs.ac.grp = &iscsi_host_group;
priv->t.host_size = sizeof(struct iscsi_cls_host);
transport_container_register(&priv->t.host_attrs);
- SETUP_HOST_RD_ATTR(netdev, ISCSI_HOST_NETDEV_NAME);
- SETUP_HOST_RD_ATTR(ipaddress, ISCSI_HOST_IPADDRESS);
- SETUP_HOST_RD_ATTR(hwaddress, ISCSI_HOST_HWADDRESS);
- SETUP_HOST_RD_ATTR(initiatorname, ISCSI_HOST_INITIATOR_NAME);
- BUG_ON(count > ISCSI_HOST_ATTRS);
- priv->host_attrs[count] = NULL;
- count = 0;
-
/* connection parameters */
priv->conn_cont.ac.class = &iscsi_connection_class.class;
priv->conn_cont.ac.match = iscsi_conn_match;