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scsi_transport_iscsi.c
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scsi_transport_iscsi.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* iSCSI transport class definitions
*
* Copyright (C) IBM Corporation, 2004
* Copyright (C) Mike Christie, 2004 - 2005
* Copyright (C) Dmitry Yusupov, 2004 - 2005
* Copyright (C) Alex Aizman, 2004 - 2005
*/
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/bsg-lib.h>
#include <linux/idr.h>
#include <net/tcp.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_iscsi.h>
#include <scsi/iscsi_if.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_bsg_iscsi.h>
#define ISCSI_TRANSPORT_VERSION "2.0-870"
#define ISCSI_SEND_MAX_ALLOWED 10
#define CREATE_TRACE_POINTS
#include <trace/events/iscsi.h>
/*
* Export tracepoint symbols to be used by other modules.
*/
EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_conn);
EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_eh);
EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_session);
EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_tcp);
EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_sw_tcp);
static int dbg_session;
module_param_named(debug_session, dbg_session, int,
S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug_session,
"Turn on debugging for sessions in scsi_transport_iscsi "
"module. Set to 1 to turn on, and zero to turn off. Default "
"is off.");
static int dbg_conn;
module_param_named(debug_conn, dbg_conn, int,
S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug_conn,
"Turn on debugging for connections in scsi_transport_iscsi "
"module. Set to 1 to turn on, and zero to turn off. Default "
"is off.");
#define ISCSI_DBG_TRANS_SESSION(_session, dbg_fmt, arg...) \
do { \
if (dbg_session) \
iscsi_cls_session_printk(KERN_INFO, _session, \
"%s: " dbg_fmt, \
__func__, ##arg); \
iscsi_dbg_trace(trace_iscsi_dbg_trans_session, \
&(_session)->dev, \
"%s " dbg_fmt, __func__, ##arg); \
} while (0);
#define ISCSI_DBG_TRANS_CONN(_conn, dbg_fmt, arg...) \
do { \
if (dbg_conn) \
iscsi_cls_conn_printk(KERN_INFO, _conn, \
"%s: " dbg_fmt, \
__func__, ##arg); \
iscsi_dbg_trace(trace_iscsi_dbg_trans_conn, \
&(_conn)->dev, \
"%s " dbg_fmt, __func__, ##arg); \
} while (0);
struct iscsi_internal {
struct scsi_transport_template t;
struct iscsi_transport *iscsi_transport;
struct list_head list;
struct device dev;
struct transport_container conn_cont;
struct transport_container session_cont;
};
static DEFINE_IDR(iscsi_ep_idr);
static DEFINE_MUTEX(iscsi_ep_idr_mutex);
static atomic_t iscsi_session_nr; /* sysfs session id for next new session */
static struct workqueue_struct *iscsi_eh_timer_workq;
static struct workqueue_struct *iscsi_conn_cleanup_workq;
static DEFINE_IDA(iscsi_sess_ida);
/*
* list of registered transports and lock that must
* be held while accessing list. The iscsi_transport_lock must
* be acquired after the rx_queue_mutex.
*/
static LIST_HEAD(iscsi_transports);
static DEFINE_SPINLOCK(iscsi_transport_lock);
#define to_iscsi_internal(tmpl) \
container_of(tmpl, struct iscsi_internal, t)
#define dev_to_iscsi_internal(_dev) \
container_of(_dev, struct iscsi_internal, dev)
static void iscsi_transport_release(struct device *dev)
{
struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
kfree(priv);
}
/*
* iscsi_transport_class represents the iscsi_transports that are
* registered.
*/
static struct class iscsi_transport_class = {
.name = "iscsi_transport",
.dev_release = iscsi_transport_release,
};
static ssize_t
show_transport_handle(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return sysfs_emit(buf, "%llu\n",
(unsigned long long)iscsi_handle(priv->iscsi_transport));
}
static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);
#define show_transport_attr(name, format) \
static ssize_t \
show_transport_##name(struct device *dev, \
struct device_attribute *attr,char *buf) \
{ \
struct iscsi_internal *priv = dev_to_iscsi_internal(dev); \
return sysfs_emit(buf, format"\n", priv->iscsi_transport->name);\
} \
static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL);
show_transport_attr(caps, "0x%x");
static struct attribute *iscsi_transport_attrs[] = {
&dev_attr_handle.attr,
&dev_attr_caps.attr,
NULL,
};
static struct attribute_group iscsi_transport_group = {
.attrs = iscsi_transport_attrs,
};
/*
* iSCSI endpoint attrs
*/
#define iscsi_dev_to_endpoint(_dev) \
container_of(_dev, struct iscsi_endpoint, dev)
#define ISCSI_ATTR(_prefix,_name,_mode,_show,_store) \
struct device_attribute dev_attr_##_prefix##_##_name = \
__ATTR(_name,_mode,_show,_store)
static void iscsi_endpoint_release(struct device *dev)
{
struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
mutex_lock(&iscsi_ep_idr_mutex);
idr_remove(&iscsi_ep_idr, ep->id);
mutex_unlock(&iscsi_ep_idr_mutex);
kfree(ep);
}
static struct class iscsi_endpoint_class = {
.name = "iscsi_endpoint",
.dev_release = iscsi_endpoint_release,
};
static ssize_t
show_ep_handle(struct device *dev, struct device_attribute *attr, char *buf)
{
struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
return sysfs_emit(buf, "%d\n", ep->id);
}
static ISCSI_ATTR(ep, handle, S_IRUGO, show_ep_handle, NULL);
static struct attribute *iscsi_endpoint_attrs[] = {
&dev_attr_ep_handle.attr,
NULL,
};
static struct attribute_group iscsi_endpoint_group = {
.attrs = iscsi_endpoint_attrs,
};
struct iscsi_endpoint *
iscsi_create_endpoint(int dd_size)
{
struct iscsi_endpoint *ep;
int err, id;
ep = kzalloc(sizeof(*ep) + dd_size, GFP_KERNEL);
if (!ep)
return NULL;
mutex_lock(&iscsi_ep_idr_mutex);
/*
* First endpoint id should be 1 to comply with user space
* applications (iscsid).
*/
id = idr_alloc(&iscsi_ep_idr, ep, 1, -1, GFP_NOIO);
if (id < 0) {
mutex_unlock(&iscsi_ep_idr_mutex);
printk(KERN_ERR "Could not allocate endpoint ID. Error %d.\n",
id);
goto free_ep;
}
mutex_unlock(&iscsi_ep_idr_mutex);
ep->id = id;
ep->dev.class = &iscsi_endpoint_class;
dev_set_name(&ep->dev, "ep-%d", id);
err = device_register(&ep->dev);
if (err)
goto free_id;
err = sysfs_create_group(&ep->dev.kobj, &iscsi_endpoint_group);
if (err)
goto unregister_dev;
if (dd_size)
ep->dd_data = &ep[1];
return ep;
unregister_dev:
device_unregister(&ep->dev);
return NULL;
free_id:
mutex_lock(&iscsi_ep_idr_mutex);
idr_remove(&iscsi_ep_idr, id);
mutex_unlock(&iscsi_ep_idr_mutex);
free_ep:
kfree(ep);
return NULL;
}
EXPORT_SYMBOL_GPL(iscsi_create_endpoint);
void iscsi_destroy_endpoint(struct iscsi_endpoint *ep)
{
sysfs_remove_group(&ep->dev.kobj, &iscsi_endpoint_group);
device_unregister(&ep->dev);
}
EXPORT_SYMBOL_GPL(iscsi_destroy_endpoint);
void iscsi_put_endpoint(struct iscsi_endpoint *ep)
{
put_device(&ep->dev);
}
EXPORT_SYMBOL_GPL(iscsi_put_endpoint);
/**
* iscsi_lookup_endpoint - get ep from handle
* @handle: endpoint handle
*
* Caller must do a iscsi_put_endpoint.
*/
struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle)
{
struct iscsi_endpoint *ep;
mutex_lock(&iscsi_ep_idr_mutex);
ep = idr_find(&iscsi_ep_idr, handle);
if (!ep)
goto unlock;
get_device(&ep->dev);
unlock:
mutex_unlock(&iscsi_ep_idr_mutex);
return ep;
}
EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint);
/*
* Interface to display network param to sysfs
*/
static void iscsi_iface_release(struct device *dev)
{
struct iscsi_iface *iface = iscsi_dev_to_iface(dev);
struct device *parent = iface->dev.parent;
kfree(iface);
put_device(parent);
}
static struct class iscsi_iface_class = {
.name = "iscsi_iface",
.dev_release = iscsi_iface_release,
};
#define ISCSI_IFACE_ATTR(_prefix, _name, _mode, _show, _store) \
struct device_attribute dev_attr_##_prefix##_##_name = \
__ATTR(_name, _mode, _show, _store)
/* iface attrs show */
#define iscsi_iface_attr_show(type, name, param_type, param) \
static ssize_t \
show_##type##_##name(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct iscsi_iface *iface = iscsi_dev_to_iface(dev); \
struct iscsi_transport *t = iface->transport; \
return t->get_iface_param(iface, param_type, param, buf); \
} \
#define iscsi_iface_net_attr(type, name, param) \
iscsi_iface_attr_show(type, name, ISCSI_NET_PARAM, param) \
static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL);
#define iscsi_iface_attr(type, name, param) \
iscsi_iface_attr_show(type, name, ISCSI_IFACE_PARAM, param) \
static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL);
/* generic read only ipv4 attribute */
iscsi_iface_net_attr(ipv4_iface, ipaddress, ISCSI_NET_PARAM_IPV4_ADDR);
iscsi_iface_net_attr(ipv4_iface, gateway, ISCSI_NET_PARAM_IPV4_GW);
iscsi_iface_net_attr(ipv4_iface, subnet, ISCSI_NET_PARAM_IPV4_SUBNET);
iscsi_iface_net_attr(ipv4_iface, bootproto, ISCSI_NET_PARAM_IPV4_BOOTPROTO);
iscsi_iface_net_attr(ipv4_iface, dhcp_dns_address_en,
ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN);
iscsi_iface_net_attr(ipv4_iface, dhcp_slp_da_info_en,
ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN);
iscsi_iface_net_attr(ipv4_iface, tos_en, ISCSI_NET_PARAM_IPV4_TOS_EN);
iscsi_iface_net_attr(ipv4_iface, tos, ISCSI_NET_PARAM_IPV4_TOS);
iscsi_iface_net_attr(ipv4_iface, grat_arp_en,
ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN);
iscsi_iface_net_attr(ipv4_iface, dhcp_alt_client_id_en,
ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN);
iscsi_iface_net_attr(ipv4_iface, dhcp_alt_client_id,
ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID);
iscsi_iface_net_attr(ipv4_iface, dhcp_req_vendor_id_en,
ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN);
iscsi_iface_net_attr(ipv4_iface, dhcp_use_vendor_id_en,
ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN);
iscsi_iface_net_attr(ipv4_iface, dhcp_vendor_id,
ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID);
iscsi_iface_net_attr(ipv4_iface, dhcp_learn_iqn_en,
ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN);
iscsi_iface_net_attr(ipv4_iface, fragment_disable,
ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE);
iscsi_iface_net_attr(ipv4_iface, incoming_forwarding_en,
ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN);
iscsi_iface_net_attr(ipv4_iface, ttl, ISCSI_NET_PARAM_IPV4_TTL);
/* generic read only ipv6 attribute */
iscsi_iface_net_attr(ipv6_iface, ipaddress, ISCSI_NET_PARAM_IPV6_ADDR);
iscsi_iface_net_attr(ipv6_iface, link_local_addr,
ISCSI_NET_PARAM_IPV6_LINKLOCAL);
iscsi_iface_net_attr(ipv6_iface, router_addr, ISCSI_NET_PARAM_IPV6_ROUTER);
iscsi_iface_net_attr(ipv6_iface, ipaddr_autocfg,
ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG);
iscsi_iface_net_attr(ipv6_iface, link_local_autocfg,
ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG);
iscsi_iface_net_attr(ipv6_iface, link_local_state,
ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE);
iscsi_iface_net_attr(ipv6_iface, router_state,
ISCSI_NET_PARAM_IPV6_ROUTER_STATE);
iscsi_iface_net_attr(ipv6_iface, grat_neighbor_adv_en,
ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN);
iscsi_iface_net_attr(ipv6_iface, mld_en, ISCSI_NET_PARAM_IPV6_MLD_EN);
iscsi_iface_net_attr(ipv6_iface, flow_label, ISCSI_NET_PARAM_IPV6_FLOW_LABEL);
iscsi_iface_net_attr(ipv6_iface, traffic_class,
ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS);
iscsi_iface_net_attr(ipv6_iface, hop_limit, ISCSI_NET_PARAM_IPV6_HOP_LIMIT);
iscsi_iface_net_attr(ipv6_iface, nd_reachable_tmo,
ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO);
iscsi_iface_net_attr(ipv6_iface, nd_rexmit_time,
ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME);
iscsi_iface_net_attr(ipv6_iface, nd_stale_tmo,
ISCSI_NET_PARAM_IPV6_ND_STALE_TMO);
iscsi_iface_net_attr(ipv6_iface, dup_addr_detect_cnt,
ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT);
iscsi_iface_net_attr(ipv6_iface, router_adv_link_mtu,
ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU);
/* common read only iface attribute */
iscsi_iface_net_attr(iface, enabled, ISCSI_NET_PARAM_IFACE_ENABLE);
iscsi_iface_net_attr(iface, vlan_id, ISCSI_NET_PARAM_VLAN_ID);
iscsi_iface_net_attr(iface, vlan_priority, ISCSI_NET_PARAM_VLAN_PRIORITY);
iscsi_iface_net_attr(iface, vlan_enabled, ISCSI_NET_PARAM_VLAN_ENABLED);
iscsi_iface_net_attr(iface, mtu, ISCSI_NET_PARAM_MTU);
iscsi_iface_net_attr(iface, port, ISCSI_NET_PARAM_PORT);
iscsi_iface_net_attr(iface, ipaddress_state, ISCSI_NET_PARAM_IPADDR_STATE);
iscsi_iface_net_attr(iface, delayed_ack_en, ISCSI_NET_PARAM_DELAYED_ACK_EN);
iscsi_iface_net_attr(iface, tcp_nagle_disable,
ISCSI_NET_PARAM_TCP_NAGLE_DISABLE);
iscsi_iface_net_attr(iface, tcp_wsf_disable, ISCSI_NET_PARAM_TCP_WSF_DISABLE);
iscsi_iface_net_attr(iface, tcp_wsf, ISCSI_NET_PARAM_TCP_WSF);
iscsi_iface_net_attr(iface, tcp_timer_scale, ISCSI_NET_PARAM_TCP_TIMER_SCALE);
iscsi_iface_net_attr(iface, tcp_timestamp_en, ISCSI_NET_PARAM_TCP_TIMESTAMP_EN);
iscsi_iface_net_attr(iface, cache_id, ISCSI_NET_PARAM_CACHE_ID);
iscsi_iface_net_attr(iface, redirect_en, ISCSI_NET_PARAM_REDIRECT_EN);
/* common iscsi specific settings attributes */
iscsi_iface_attr(iface, def_taskmgmt_tmo, ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO);
iscsi_iface_attr(iface, header_digest, ISCSI_IFACE_PARAM_HDRDGST_EN);
iscsi_iface_attr(iface, data_digest, ISCSI_IFACE_PARAM_DATADGST_EN);
iscsi_iface_attr(iface, immediate_data, ISCSI_IFACE_PARAM_IMM_DATA_EN);
iscsi_iface_attr(iface, initial_r2t, ISCSI_IFACE_PARAM_INITIAL_R2T_EN);
iscsi_iface_attr(iface, data_seq_in_order,
ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN);
iscsi_iface_attr(iface, data_pdu_in_order, ISCSI_IFACE_PARAM_PDU_INORDER_EN);
iscsi_iface_attr(iface, erl, ISCSI_IFACE_PARAM_ERL);
iscsi_iface_attr(iface, max_recv_dlength, ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH);
iscsi_iface_attr(iface, first_burst_len, ISCSI_IFACE_PARAM_FIRST_BURST);
iscsi_iface_attr(iface, max_outstanding_r2t, ISCSI_IFACE_PARAM_MAX_R2T);
iscsi_iface_attr(iface, max_burst_len, ISCSI_IFACE_PARAM_MAX_BURST);
iscsi_iface_attr(iface, chap_auth, ISCSI_IFACE_PARAM_CHAP_AUTH_EN);
iscsi_iface_attr(iface, bidi_chap, ISCSI_IFACE_PARAM_BIDI_CHAP_EN);
iscsi_iface_attr(iface, discovery_auth_optional,
ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL);
iscsi_iface_attr(iface, discovery_logout,
ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN);
iscsi_iface_attr(iface, strict_login_comp_en,
ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN);
iscsi_iface_attr(iface, initiator_name, ISCSI_IFACE_PARAM_INITIATOR_NAME);
static umode_t iscsi_iface_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct iscsi_iface *iface = iscsi_dev_to_iface(dev);
struct iscsi_transport *t = iface->transport;
int param = -1;
if (attr == &dev_attr_iface_def_taskmgmt_tmo.attr)
param = ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO;
else if (attr == &dev_attr_iface_header_digest.attr)
param = ISCSI_IFACE_PARAM_HDRDGST_EN;
else if (attr == &dev_attr_iface_data_digest.attr)
param = ISCSI_IFACE_PARAM_DATADGST_EN;
else if (attr == &dev_attr_iface_immediate_data.attr)
param = ISCSI_IFACE_PARAM_IMM_DATA_EN;
else if (attr == &dev_attr_iface_initial_r2t.attr)
param = ISCSI_IFACE_PARAM_INITIAL_R2T_EN;
else if (attr == &dev_attr_iface_data_seq_in_order.attr)
param = ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN;
else if (attr == &dev_attr_iface_data_pdu_in_order.attr)
param = ISCSI_IFACE_PARAM_PDU_INORDER_EN;
else if (attr == &dev_attr_iface_erl.attr)
param = ISCSI_IFACE_PARAM_ERL;
else if (attr == &dev_attr_iface_max_recv_dlength.attr)
param = ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH;
else if (attr == &dev_attr_iface_first_burst_len.attr)
param = ISCSI_IFACE_PARAM_FIRST_BURST;
else if (attr == &dev_attr_iface_max_outstanding_r2t.attr)
param = ISCSI_IFACE_PARAM_MAX_R2T;
else if (attr == &dev_attr_iface_max_burst_len.attr)
param = ISCSI_IFACE_PARAM_MAX_BURST;
else if (attr == &dev_attr_iface_chap_auth.attr)
param = ISCSI_IFACE_PARAM_CHAP_AUTH_EN;
else if (attr == &dev_attr_iface_bidi_chap.attr)
param = ISCSI_IFACE_PARAM_BIDI_CHAP_EN;
else if (attr == &dev_attr_iface_discovery_auth_optional.attr)
param = ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL;
else if (attr == &dev_attr_iface_discovery_logout.attr)
param = ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN;
else if (attr == &dev_attr_iface_strict_login_comp_en.attr)
param = ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN;
else if (attr == &dev_attr_iface_initiator_name.attr)
param = ISCSI_IFACE_PARAM_INITIATOR_NAME;
if (param != -1)
return t->attr_is_visible(ISCSI_IFACE_PARAM, param);
if (attr == &dev_attr_iface_enabled.attr)
param = ISCSI_NET_PARAM_IFACE_ENABLE;
else if (attr == &dev_attr_iface_vlan_id.attr)
param = ISCSI_NET_PARAM_VLAN_ID;
else if (attr == &dev_attr_iface_vlan_priority.attr)
param = ISCSI_NET_PARAM_VLAN_PRIORITY;
else if (attr == &dev_attr_iface_vlan_enabled.attr)
param = ISCSI_NET_PARAM_VLAN_ENABLED;
else if (attr == &dev_attr_iface_mtu.attr)
param = ISCSI_NET_PARAM_MTU;
else if (attr == &dev_attr_iface_port.attr)
param = ISCSI_NET_PARAM_PORT;
else if (attr == &dev_attr_iface_ipaddress_state.attr)
param = ISCSI_NET_PARAM_IPADDR_STATE;
else if (attr == &dev_attr_iface_delayed_ack_en.attr)
param = ISCSI_NET_PARAM_DELAYED_ACK_EN;
else if (attr == &dev_attr_iface_tcp_nagle_disable.attr)
param = ISCSI_NET_PARAM_TCP_NAGLE_DISABLE;
else if (attr == &dev_attr_iface_tcp_wsf_disable.attr)
param = ISCSI_NET_PARAM_TCP_WSF_DISABLE;
else if (attr == &dev_attr_iface_tcp_wsf.attr)
param = ISCSI_NET_PARAM_TCP_WSF;
else if (attr == &dev_attr_iface_tcp_timer_scale.attr)
param = ISCSI_NET_PARAM_TCP_TIMER_SCALE;
else if (attr == &dev_attr_iface_tcp_timestamp_en.attr)
param = ISCSI_NET_PARAM_TCP_TIMESTAMP_EN;
else if (attr == &dev_attr_iface_cache_id.attr)
param = ISCSI_NET_PARAM_CACHE_ID;
else if (attr == &dev_attr_iface_redirect_en.attr)
param = ISCSI_NET_PARAM_REDIRECT_EN;
else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
if (attr == &dev_attr_ipv4_iface_ipaddress.attr)
param = ISCSI_NET_PARAM_IPV4_ADDR;
else if (attr == &dev_attr_ipv4_iface_gateway.attr)
param = ISCSI_NET_PARAM_IPV4_GW;
else if (attr == &dev_attr_ipv4_iface_subnet.attr)
param = ISCSI_NET_PARAM_IPV4_SUBNET;
else if (attr == &dev_attr_ipv4_iface_bootproto.attr)
param = ISCSI_NET_PARAM_IPV4_BOOTPROTO;
else if (attr ==
&dev_attr_ipv4_iface_dhcp_dns_address_en.attr)
param = ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN;
else if (attr ==
&dev_attr_ipv4_iface_dhcp_slp_da_info_en.attr)
param = ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN;
else if (attr == &dev_attr_ipv4_iface_tos_en.attr)
param = ISCSI_NET_PARAM_IPV4_TOS_EN;
else if (attr == &dev_attr_ipv4_iface_tos.attr)
param = ISCSI_NET_PARAM_IPV4_TOS;
else if (attr == &dev_attr_ipv4_iface_grat_arp_en.attr)
param = ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN;
else if (attr ==
&dev_attr_ipv4_iface_dhcp_alt_client_id_en.attr)
param = ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN;
else if (attr == &dev_attr_ipv4_iface_dhcp_alt_client_id.attr)
param = ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID;
else if (attr ==
&dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr)
param = ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN;
else if (attr ==
&dev_attr_ipv4_iface_dhcp_use_vendor_id_en.attr)
param = ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN;
else if (attr == &dev_attr_ipv4_iface_dhcp_vendor_id.attr)
param = ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID;
else if (attr ==
&dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr)
param = ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN;
else if (attr ==
&dev_attr_ipv4_iface_fragment_disable.attr)
param = ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE;
else if (attr ==
&dev_attr_ipv4_iface_incoming_forwarding_en.attr)
param = ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN;
else if (attr == &dev_attr_ipv4_iface_ttl.attr)
param = ISCSI_NET_PARAM_IPV4_TTL;
else
return 0;
} else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) {
if (attr == &dev_attr_ipv6_iface_ipaddress.attr)
param = ISCSI_NET_PARAM_IPV6_ADDR;
else if (attr == &dev_attr_ipv6_iface_link_local_addr.attr)
param = ISCSI_NET_PARAM_IPV6_LINKLOCAL;
else if (attr == &dev_attr_ipv6_iface_router_addr.attr)
param = ISCSI_NET_PARAM_IPV6_ROUTER;
else if (attr == &dev_attr_ipv6_iface_ipaddr_autocfg.attr)
param = ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG;
else if (attr == &dev_attr_ipv6_iface_link_local_autocfg.attr)
param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG;
else if (attr == &dev_attr_ipv6_iface_link_local_state.attr)
param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE;
else if (attr == &dev_attr_ipv6_iface_router_state.attr)
param = ISCSI_NET_PARAM_IPV6_ROUTER_STATE;
else if (attr ==
&dev_attr_ipv6_iface_grat_neighbor_adv_en.attr)
param = ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN;
else if (attr == &dev_attr_ipv6_iface_mld_en.attr)
param = ISCSI_NET_PARAM_IPV6_MLD_EN;
else if (attr == &dev_attr_ipv6_iface_flow_label.attr)
param = ISCSI_NET_PARAM_IPV6_FLOW_LABEL;
else if (attr == &dev_attr_ipv6_iface_traffic_class.attr)
param = ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS;
else if (attr == &dev_attr_ipv6_iface_hop_limit.attr)
param = ISCSI_NET_PARAM_IPV6_HOP_LIMIT;
else if (attr == &dev_attr_ipv6_iface_nd_reachable_tmo.attr)
param = ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO;
else if (attr == &dev_attr_ipv6_iface_nd_rexmit_time.attr)
param = ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME;
else if (attr == &dev_attr_ipv6_iface_nd_stale_tmo.attr)
param = ISCSI_NET_PARAM_IPV6_ND_STALE_TMO;
else if (attr == &dev_attr_ipv6_iface_dup_addr_detect_cnt.attr)
param = ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT;
else if (attr == &dev_attr_ipv6_iface_router_adv_link_mtu.attr)
param = ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU;
else
return 0;
} else {
WARN_ONCE(1, "Invalid iface attr");
return 0;
}
return t->attr_is_visible(ISCSI_NET_PARAM, param);
}
static struct attribute *iscsi_iface_attrs[] = {
&dev_attr_iface_enabled.attr,
&dev_attr_iface_vlan_id.attr,
&dev_attr_iface_vlan_priority.attr,
&dev_attr_iface_vlan_enabled.attr,
&dev_attr_ipv4_iface_ipaddress.attr,
&dev_attr_ipv4_iface_gateway.attr,
&dev_attr_ipv4_iface_subnet.attr,
&dev_attr_ipv4_iface_bootproto.attr,
&dev_attr_ipv6_iface_ipaddress.attr,
&dev_attr_ipv6_iface_link_local_addr.attr,
&dev_attr_ipv6_iface_router_addr.attr,
&dev_attr_ipv6_iface_ipaddr_autocfg.attr,
&dev_attr_ipv6_iface_link_local_autocfg.attr,
&dev_attr_iface_mtu.attr,
&dev_attr_iface_port.attr,
&dev_attr_iface_ipaddress_state.attr,
&dev_attr_iface_delayed_ack_en.attr,
&dev_attr_iface_tcp_nagle_disable.attr,
&dev_attr_iface_tcp_wsf_disable.attr,
&dev_attr_iface_tcp_wsf.attr,
&dev_attr_iface_tcp_timer_scale.attr,
&dev_attr_iface_tcp_timestamp_en.attr,
&dev_attr_iface_cache_id.attr,
&dev_attr_iface_redirect_en.attr,
&dev_attr_iface_def_taskmgmt_tmo.attr,
&dev_attr_iface_header_digest.attr,
&dev_attr_iface_data_digest.attr,
&dev_attr_iface_immediate_data.attr,
&dev_attr_iface_initial_r2t.attr,
&dev_attr_iface_data_seq_in_order.attr,
&dev_attr_iface_data_pdu_in_order.attr,
&dev_attr_iface_erl.attr,
&dev_attr_iface_max_recv_dlength.attr,
&dev_attr_iface_first_burst_len.attr,
&dev_attr_iface_max_outstanding_r2t.attr,
&dev_attr_iface_max_burst_len.attr,
&dev_attr_iface_chap_auth.attr,
&dev_attr_iface_bidi_chap.attr,
&dev_attr_iface_discovery_auth_optional.attr,
&dev_attr_iface_discovery_logout.attr,
&dev_attr_iface_strict_login_comp_en.attr,
&dev_attr_iface_initiator_name.attr,
&dev_attr_ipv4_iface_dhcp_dns_address_en.attr,
&dev_attr_ipv4_iface_dhcp_slp_da_info_en.attr,
&dev_attr_ipv4_iface_tos_en.attr,
&dev_attr_ipv4_iface_tos.attr,
&dev_attr_ipv4_iface_grat_arp_en.attr,
&dev_attr_ipv4_iface_dhcp_alt_client_id_en.attr,
&dev_attr_ipv4_iface_dhcp_alt_client_id.attr,
&dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr,
&dev_attr_ipv4_iface_dhcp_use_vendor_id_en.attr,
&dev_attr_ipv4_iface_dhcp_vendor_id.attr,
&dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr,
&dev_attr_ipv4_iface_fragment_disable.attr,
&dev_attr_ipv4_iface_incoming_forwarding_en.attr,
&dev_attr_ipv4_iface_ttl.attr,
&dev_attr_ipv6_iface_link_local_state.attr,
&dev_attr_ipv6_iface_router_state.attr,
&dev_attr_ipv6_iface_grat_neighbor_adv_en.attr,
&dev_attr_ipv6_iface_mld_en.attr,
&dev_attr_ipv6_iface_flow_label.attr,
&dev_attr_ipv6_iface_traffic_class.attr,
&dev_attr_ipv6_iface_hop_limit.attr,
&dev_attr_ipv6_iface_nd_reachable_tmo.attr,
&dev_attr_ipv6_iface_nd_rexmit_time.attr,
&dev_attr_ipv6_iface_nd_stale_tmo.attr,
&dev_attr_ipv6_iface_dup_addr_detect_cnt.attr,
&dev_attr_ipv6_iface_router_adv_link_mtu.attr,
NULL,
};
static struct attribute_group iscsi_iface_group = {
.attrs = iscsi_iface_attrs,
.is_visible = iscsi_iface_attr_is_visible,
};
/* convert iscsi_ipaddress_state values to ascii string name */
static const struct {
enum iscsi_ipaddress_state value;
char *name;
} iscsi_ipaddress_state_names[] = {
{ISCSI_IPDDRESS_STATE_UNCONFIGURED, "Unconfigured" },
{ISCSI_IPDDRESS_STATE_ACQUIRING, "Acquiring" },
{ISCSI_IPDDRESS_STATE_TENTATIVE, "Tentative" },
{ISCSI_IPDDRESS_STATE_VALID, "Valid" },
{ISCSI_IPDDRESS_STATE_DISABLING, "Disabling" },
{ISCSI_IPDDRESS_STATE_INVALID, "Invalid" },
{ISCSI_IPDDRESS_STATE_DEPRECATED, "Deprecated" },
};
char *iscsi_get_ipaddress_state_name(enum iscsi_ipaddress_state port_state)
{
int i;
char *state = NULL;
for (i = 0; i < ARRAY_SIZE(iscsi_ipaddress_state_names); i++) {
if (iscsi_ipaddress_state_names[i].value == port_state) {
state = iscsi_ipaddress_state_names[i].name;
break;
}
}
return state;
}
EXPORT_SYMBOL_GPL(iscsi_get_ipaddress_state_name);
/* convert iscsi_router_state values to ascii string name */
static const struct {
enum iscsi_router_state value;
char *name;
} iscsi_router_state_names[] = {
{ISCSI_ROUTER_STATE_UNKNOWN, "Unknown" },
{ISCSI_ROUTER_STATE_ADVERTISED, "Advertised" },
{ISCSI_ROUTER_STATE_MANUAL, "Manual" },
{ISCSI_ROUTER_STATE_STALE, "Stale" },
};
char *iscsi_get_router_state_name(enum iscsi_router_state router_state)
{
int i;
char *state = NULL;
for (i = 0; i < ARRAY_SIZE(iscsi_router_state_names); i++) {
if (iscsi_router_state_names[i].value == router_state) {
state = iscsi_router_state_names[i].name;
break;
}
}
return state;
}
EXPORT_SYMBOL_GPL(iscsi_get_router_state_name);
struct iscsi_iface *
iscsi_create_iface(struct Scsi_Host *shost, struct iscsi_transport *transport,
uint32_t iface_type, uint32_t iface_num, int dd_size)
{
struct iscsi_iface *iface;
int err;
iface = kzalloc(sizeof(*iface) + dd_size, GFP_KERNEL);
if (!iface)
return NULL;
iface->transport = transport;
iface->iface_type = iface_type;
iface->iface_num = iface_num;
iface->dev.release = iscsi_iface_release;
iface->dev.class = &iscsi_iface_class;
/* parent reference released in iscsi_iface_release */
iface->dev.parent = get_device(&shost->shost_gendev);
if (iface_type == ISCSI_IFACE_TYPE_IPV4)
dev_set_name(&iface->dev, "ipv4-iface-%u-%u", shost->host_no,
iface_num);
else
dev_set_name(&iface->dev, "ipv6-iface-%u-%u", shost->host_no,
iface_num);
err = device_register(&iface->dev);
if (err)
goto free_iface;
err = sysfs_create_group(&iface->dev.kobj, &iscsi_iface_group);
if (err)
goto unreg_iface;
if (dd_size)
iface->dd_data = &iface[1];
return iface;
unreg_iface:
device_unregister(&iface->dev);
return NULL;
free_iface:
put_device(iface->dev.parent);
kfree(iface);
return NULL;
}
EXPORT_SYMBOL_GPL(iscsi_create_iface);
void iscsi_destroy_iface(struct iscsi_iface *iface)
{
sysfs_remove_group(&iface->dev.kobj, &iscsi_iface_group);
device_unregister(&iface->dev);
}
EXPORT_SYMBOL_GPL(iscsi_destroy_iface);
/*
* Interface to display flash node params to sysfs
*/
#define ISCSI_FLASHNODE_ATTR(_prefix, _name, _mode, _show, _store) \
struct device_attribute dev_attr_##_prefix##_##_name = \
__ATTR(_name, _mode, _show, _store)
/* flash node session attrs show */
#define iscsi_flashnode_sess_attr_show(type, name, param) \
static ssize_t \
show_##type##_##name(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct iscsi_bus_flash_session *fnode_sess = \
iscsi_dev_to_flash_session(dev);\
struct iscsi_transport *t = fnode_sess->transport; \
return t->get_flashnode_param(fnode_sess, param, buf); \
} \
#define iscsi_flashnode_sess_attr(type, name, param) \
iscsi_flashnode_sess_attr_show(type, name, param) \
static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \
show_##type##_##name, NULL);
/* Flash node session attributes */
iscsi_flashnode_sess_attr(fnode, auto_snd_tgt_disable,
ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE);
iscsi_flashnode_sess_attr(fnode, discovery_session,
ISCSI_FLASHNODE_DISCOVERY_SESS);
iscsi_flashnode_sess_attr(fnode, portal_type, ISCSI_FLASHNODE_PORTAL_TYPE);
iscsi_flashnode_sess_attr(fnode, entry_enable, ISCSI_FLASHNODE_ENTRY_EN);
iscsi_flashnode_sess_attr(fnode, immediate_data, ISCSI_FLASHNODE_IMM_DATA_EN);
iscsi_flashnode_sess_attr(fnode, initial_r2t, ISCSI_FLASHNODE_INITIAL_R2T_EN);
iscsi_flashnode_sess_attr(fnode, data_seq_in_order,
ISCSI_FLASHNODE_DATASEQ_INORDER);
iscsi_flashnode_sess_attr(fnode, data_pdu_in_order,
ISCSI_FLASHNODE_PDU_INORDER);
iscsi_flashnode_sess_attr(fnode, chap_auth, ISCSI_FLASHNODE_CHAP_AUTH_EN);
iscsi_flashnode_sess_attr(fnode, discovery_logout,
ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN);
iscsi_flashnode_sess_attr(fnode, bidi_chap, ISCSI_FLASHNODE_BIDI_CHAP_EN);
iscsi_flashnode_sess_attr(fnode, discovery_auth_optional,
ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL);
iscsi_flashnode_sess_attr(fnode, erl, ISCSI_FLASHNODE_ERL);
iscsi_flashnode_sess_attr(fnode, first_burst_len, ISCSI_FLASHNODE_FIRST_BURST);
iscsi_flashnode_sess_attr(fnode, def_time2wait, ISCSI_FLASHNODE_DEF_TIME2WAIT);
iscsi_flashnode_sess_attr(fnode, def_time2retain,
ISCSI_FLASHNODE_DEF_TIME2RETAIN);
iscsi_flashnode_sess_attr(fnode, max_outstanding_r2t, ISCSI_FLASHNODE_MAX_R2T);
iscsi_flashnode_sess_attr(fnode, isid, ISCSI_FLASHNODE_ISID);
iscsi_flashnode_sess_attr(fnode, tsid, ISCSI_FLASHNODE_TSID);
iscsi_flashnode_sess_attr(fnode, max_burst_len, ISCSI_FLASHNODE_MAX_BURST);
iscsi_flashnode_sess_attr(fnode, def_taskmgmt_tmo,
ISCSI_FLASHNODE_DEF_TASKMGMT_TMO);
iscsi_flashnode_sess_attr(fnode, targetalias, ISCSI_FLASHNODE_ALIAS);
iscsi_flashnode_sess_attr(fnode, targetname, ISCSI_FLASHNODE_NAME);
iscsi_flashnode_sess_attr(fnode, tpgt, ISCSI_FLASHNODE_TPGT);
iscsi_flashnode_sess_attr(fnode, discovery_parent_idx,
ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX);
iscsi_flashnode_sess_attr(fnode, discovery_parent_type,
ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE);
iscsi_flashnode_sess_attr(fnode, chap_in_idx, ISCSI_FLASHNODE_CHAP_IN_IDX);
iscsi_flashnode_sess_attr(fnode, chap_out_idx, ISCSI_FLASHNODE_CHAP_OUT_IDX);
iscsi_flashnode_sess_attr(fnode, username, ISCSI_FLASHNODE_USERNAME);
iscsi_flashnode_sess_attr(fnode, username_in, ISCSI_FLASHNODE_USERNAME_IN);
iscsi_flashnode_sess_attr(fnode, password, ISCSI_FLASHNODE_PASSWORD);
iscsi_flashnode_sess_attr(fnode, password_in, ISCSI_FLASHNODE_PASSWORD_IN);
iscsi_flashnode_sess_attr(fnode, is_boot_target, ISCSI_FLASHNODE_IS_BOOT_TGT);
static struct attribute *iscsi_flashnode_sess_attrs[] = {
&dev_attr_fnode_auto_snd_tgt_disable.attr,
&dev_attr_fnode_discovery_session.attr,
&dev_attr_fnode_portal_type.attr,
&dev_attr_fnode_entry_enable.attr,
&dev_attr_fnode_immediate_data.attr,
&dev_attr_fnode_initial_r2t.attr,
&dev_attr_fnode_data_seq_in_order.attr,
&dev_attr_fnode_data_pdu_in_order.attr,
&dev_attr_fnode_chap_auth.attr,
&dev_attr_fnode_discovery_logout.attr,
&dev_attr_fnode_bidi_chap.attr,
&dev_attr_fnode_discovery_auth_optional.attr,
&dev_attr_fnode_erl.attr,
&dev_attr_fnode_first_burst_len.attr,
&dev_attr_fnode_def_time2wait.attr,
&dev_attr_fnode_def_time2retain.attr,
&dev_attr_fnode_max_outstanding_r2t.attr,
&dev_attr_fnode_isid.attr,
&dev_attr_fnode_tsid.attr,
&dev_attr_fnode_max_burst_len.attr,
&dev_attr_fnode_def_taskmgmt_tmo.attr,
&dev_attr_fnode_targetalias.attr,
&dev_attr_fnode_targetname.attr,
&dev_attr_fnode_tpgt.attr,
&dev_attr_fnode_discovery_parent_idx.attr,
&dev_attr_fnode_discovery_parent_type.attr,
&dev_attr_fnode_chap_in_idx.attr,
&dev_attr_fnode_chap_out_idx.attr,
&dev_attr_fnode_username.attr,
&dev_attr_fnode_username_in.attr,
&dev_attr_fnode_password.attr,
&dev_attr_fnode_password_in.attr,
&dev_attr_fnode_is_boot_target.attr,
NULL,
};
static umode_t iscsi_flashnode_sess_attr_is_visible(struct kobject *kobj,
struct attribute *attr,
int i)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct iscsi_bus_flash_session *fnode_sess =
iscsi_dev_to_flash_session(dev);
struct iscsi_transport *t = fnode_sess->transport;
int param;
if (attr == &dev_attr_fnode_auto_snd_tgt_disable.attr) {
param = ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE;
} else if (attr == &dev_attr_fnode_discovery_session.attr) {
param = ISCSI_FLASHNODE_DISCOVERY_SESS;
} else if (attr == &dev_attr_fnode_portal_type.attr) {
param = ISCSI_FLASHNODE_PORTAL_TYPE;
} else if (attr == &dev_attr_fnode_entry_enable.attr) {
param = ISCSI_FLASHNODE_ENTRY_EN;
} else if (attr == &dev_attr_fnode_immediate_data.attr) {
param = ISCSI_FLASHNODE_IMM_DATA_EN;
} else if (attr == &dev_attr_fnode_initial_r2t.attr) {
param = ISCSI_FLASHNODE_INITIAL_R2T_EN;
} else if (attr == &dev_attr_fnode_data_seq_in_order.attr) {
param = ISCSI_FLASHNODE_DATASEQ_INORDER;
} else if (attr == &dev_attr_fnode_data_pdu_in_order.attr) {
param = ISCSI_FLASHNODE_PDU_INORDER;
} else if (attr == &dev_attr_fnode_chap_auth.attr) {
param = ISCSI_FLASHNODE_CHAP_AUTH_EN;
} else if (attr == &dev_attr_fnode_discovery_logout.attr) {
param = ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN;
} else if (attr == &dev_attr_fnode_bidi_chap.attr) {
param = ISCSI_FLASHNODE_BIDI_CHAP_EN;
} else if (attr == &dev_attr_fnode_discovery_auth_optional.attr) {
param = ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL;
} else if (attr == &dev_attr_fnode_erl.attr) {
param = ISCSI_FLASHNODE_ERL;
} else if (attr == &dev_attr_fnode_first_burst_len.attr) {
param = ISCSI_FLASHNODE_FIRST_BURST;
} else if (attr == &dev_attr_fnode_def_time2wait.attr) {
param = ISCSI_FLASHNODE_DEF_TIME2WAIT;
} else if (attr == &dev_attr_fnode_def_time2retain.attr) {
param = ISCSI_FLASHNODE_DEF_TIME2RETAIN;
} else if (attr == &dev_attr_fnode_max_outstanding_r2t.attr) {
param = ISCSI_FLASHNODE_MAX_R2T;
} else if (attr == &dev_attr_fnode_isid.attr) {
param = ISCSI_FLASHNODE_ISID;
} else if (attr == &dev_attr_fnode_tsid.attr) {
param = ISCSI_FLASHNODE_TSID;
} else if (attr == &dev_attr_fnode_max_burst_len.attr) {
param = ISCSI_FLASHNODE_MAX_BURST;
} else if (attr == &dev_attr_fnode_def_taskmgmt_tmo.attr) {
param = ISCSI_FLASHNODE_DEF_TASKMGMT_TMO;
} else if (attr == &dev_attr_fnode_targetalias.attr) {
param = ISCSI_FLASHNODE_ALIAS;
} else if (attr == &dev_attr_fnode_targetname.attr) {
param = ISCSI_FLASHNODE_NAME;
} else if (attr == &dev_attr_fnode_tpgt.attr) {
param = ISCSI_FLASHNODE_TPGT;
} else if (attr == &dev_attr_fnode_discovery_parent_idx.attr) {
param = ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX;
} else if (attr == &dev_attr_fnode_discovery_parent_type.attr) {
param = ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE;
} else if (attr == &dev_attr_fnode_chap_in_idx.attr) {
param = ISCSI_FLASHNODE_CHAP_IN_IDX;
} else if (attr == &dev_attr_fnode_chap_out_idx.attr) {
param = ISCSI_FLASHNODE_CHAP_OUT_IDX;
} else if (attr == &dev_attr_fnode_username.attr) {
param = ISCSI_FLASHNODE_USERNAME;
} else if (attr == &dev_attr_fnode_username_in.attr) {
param = ISCSI_FLASHNODE_USERNAME_IN;
} else if (attr == &dev_attr_fnode_password.attr) {
param = ISCSI_FLASHNODE_PASSWORD;
} else if (attr == &dev_attr_fnode_password_in.attr) {
param = ISCSI_FLASHNODE_PASSWORD_IN;
} else if (attr == &dev_attr_fnode_is_boot_target.attr) {
param = ISCSI_FLASHNODE_IS_BOOT_TGT;
} else {
WARN_ONCE(1, "Invalid flashnode session attr");
return 0;
}
return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param);
}
static struct attribute_group iscsi_flashnode_sess_attr_group = {
.attrs = iscsi_flashnode_sess_attrs,
.is_visible = iscsi_flashnode_sess_attr_is_visible,
};
static const struct attribute_group *iscsi_flashnode_sess_attr_groups[] = {
&iscsi_flashnode_sess_attr_group,
NULL,
};