#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>
static atomic_t iscsi_session_nr; /* sysfs session id for next new session */
static struct workqueue_struct *iscsi_eh_timer_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
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, linklocal_autocfg,
+iscsi_iface_net_attr(ipv6_iface, link_local_autocfg,
ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG);
/* common read only iface attribute */
iscsi_iface_net_attr(iface, enabled, ISCSI_NET_PARAM_IFACE_ENABLE);
-iscsi_iface_net_attr(iface, vlan, ISCSI_NET_PARAM_VLAN_ID);
+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);
static mode_t iscsi_iface_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
if (attr == &dev_attr_iface_enabled.attr)
param = ISCSI_NET_PARAM_IFACE_ENABLE;
- else if (attr == &dev_attr_iface_vlan.attr)
+ 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 (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
if (attr == &dev_attr_ipv4_iface_ipaddress.attr)
param = ISCSI_NET_PARAM_IPV4_ADDR;
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_linklocal_autocfg.attr)
+ else if (attr == &dev_attr_ipv6_iface_link_local_autocfg.attr)
param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG;
else
return 0;
static struct attribute *iscsi_iface_attrs[] = {
&dev_attr_iface_enabled.attr,
- &dev_attr_iface_vlan.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_ipv6_iface_link_local_addr.attr,
&dev_attr_ipv6_iface_router_addr.attr,
&dev_attr_ipv6_iface_ipaddr_autocfg.attr,
- &dev_attr_ipv6_iface_linklocal_autocfg.attr,
+ &dev_attr_ipv6_iface_link_local_autocfg.attr,
+ &dev_attr_iface_mtu.attr,
+ &dev_attr_iface_port.attr,
NULL,
};
/**
* iscsi_bsg_host_add - Create and add the bsg hooks to receive requests
* @shost: shost for iscsi_host
- * @cls_host: iscsi_cls_host adding the structures to
+ * @ihost: iscsi_cls_host adding the structures to
*/
static int
iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost)
}
EXPORT_SYMBOL_GPL(iscsi_session_chkready);
+int iscsi_is_session_online(struct iscsi_cls_session *session)
+{
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(&session->lock, flags);
+ if (session->state == ISCSI_SESSION_LOGGED_IN)
+ ret = 1;
+ spin_unlock_irqrestore(&session->lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(iscsi_is_session_online);
+
static void iscsi_session_release(struct device *dev)
{
struct iscsi_cls_session *session = iscsi_dev_to_session(dev);
struct Scsi_Host *shost = iscsi_session_to_shost(session);
struct iscsi_cls_host *ihost = shost->shost_data;
unsigned long flags;
+ unsigned int target_id;
ISCSI_DBG_TRANS_SESSION(session, "Unbinding session\n");
mutex_unlock(&ihost->mutex);
return;
}
+
+ target_id = session->target_id;
session->target_id = ISCSI_MAX_TARGET;
spin_unlock_irqrestore(&session->lock, flags);
mutex_unlock(&ihost->mutex);
+ if (session->ida_used)
+ ida_simple_remove(&iscsi_sess_ida, target_id);
+
scsi_remove_target(&session->dev);
iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION);
ISCSI_DBG_TRANS_SESSION(session, "Completed target removal\n");
}
EXPORT_SYMBOL_GPL(iscsi_alloc_session);
-static int iscsi_get_next_target_id(struct device *dev, void *data)
-{
- struct iscsi_cls_session *session;
- unsigned long flags;
- int err = 0;
-
- if (!iscsi_is_session_dev(dev))
- return 0;
-
- session = iscsi_dev_to_session(dev);
- spin_lock_irqsave(&session->lock, flags);
- if (*((unsigned int *) data) == session->target_id)
- err = -EEXIST;
- spin_unlock_irqrestore(&session->lock, flags);
- return err;
-}
-
int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
{
struct Scsi_Host *shost = iscsi_session_to_shost(session);
struct iscsi_cls_host *ihost;
unsigned long flags;
- unsigned int id = target_id;
+ int id = 0;
int err;
ihost = shost->shost_data;
session->sid = atomic_add_return(1, &iscsi_session_nr);
- if (id == ISCSI_MAX_TARGET) {
- for (id = 0; id < ISCSI_MAX_TARGET; id++) {
- err = device_for_each_child(&shost->shost_gendev, &id,
- iscsi_get_next_target_id);
- if (!err)
- break;
- }
+ if (target_id == ISCSI_MAX_TARGET) {
+ id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL);
- if (id == ISCSI_MAX_TARGET) {
+ if (id < 0) {
iscsi_cls_session_printk(KERN_ERR, session,
- "Too many iscsi targets. Max "
- "number of targets is %d.\n",
- ISCSI_MAX_TARGET - 1);
- err = -EOVERFLOW;
- goto release_host;
+ "Failure in Target ID Allocation\n");
+ return id;
}
- }
- session->target_id = id;
+ session->target_id = (unsigned int)id;
+ session->ida_used = true;
+ } else
+ session->target_id = target_id;
dev_set_name(&session->dev, "session%u", session->sid);
err = device_add(&session->dev);
if (err) {
iscsi_cls_session_printk(KERN_ERR, session,
"could not register session's dev\n");
- goto release_host;
+ goto release_ida;
}
transport_register_device(&session->dev);
ISCSI_DBG_TRANS_SESSION(session, "Completed session adding\n");
return 0;
-release_host:
- scsi_host_put(shost);
+release_ida:
+ if (session->ida_used)
+ ida_simple_remove(&iscsi_sess_ida, session->target_id);
+
return err;
}
EXPORT_SYMBOL_GPL(iscsi_add_session);
}
EXPORT_SYMBOL_GPL(iscsi_conn_error_event);
+void iscsi_conn_login_event(struct iscsi_cls_conn *conn,
+ enum iscsi_conn_state state)
+{
+ struct nlmsghdr *nlh;
+ struct sk_buff *skb;
+ struct iscsi_uevent *ev;
+ struct iscsi_internal *priv;
+ int len = NLMSG_SPACE(sizeof(*ev));
+
+ priv = iscsi_if_transport_lookup(conn->transport);
+ if (!priv)
+ return;
+
+ skb = alloc_skb(len, GFP_ATOMIC);
+ if (!skb) {
+ iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored "
+ "conn login (%d)\n", state);
+ return;
+ }
+
+ nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
+ ev = NLMSG_DATA(nlh);
+ ev->transport_handle = iscsi_handle(conn->transport);
+ ev->type = ISCSI_KEVENT_CONN_LOGIN_STATE;
+ ev->r.conn_login.state = state;
+ ev->r.conn_login.cid = conn->cid;
+ ev->r.conn_login.sid = iscsi_conn_get_sid(conn);
+ iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
+
+ iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn login (%d)\n",
+ state);
+}
+EXPORT_SYMBOL_GPL(iscsi_conn_login_event);
+
static int
iscsi_if_send_reply(uint32_t group, int seq, int type, int done, int multi,
void *payload, int size)
static int
iscsi_set_iface_params(struct iscsi_transport *transport,
- struct iscsi_uevent *ev)
+ struct iscsi_uevent *ev, uint32_t len)
{
char *data = (char *)ev + sizeof(*ev);
struct Scsi_Host *shost;
return -ENODEV;
}
- err = transport->set_iface_param(shost, data,
- ev->u.set_iface_params.count);
+ err = transport->set_iface_param(shost, data, len);
scsi_host_put(shost);
return err;
}
err = iscsi_set_path(transport, ev);
break;
case ISCSI_UEVENT_SET_IFACE_PARAMS:
- err = iscsi_set_iface_params(transport, ev);
+ err = iscsi_set_iface_params(transport, ev,
+ nlmsg_attrlen(nlh, sizeof(*ev)));
break;
default:
err = -ENOSYS;
git.openpandora.org / pandora-kernel.git / blobdiff