Merge branch 'pending' of master.kernel.org:/pub/scm/linux/kernel/git/vxy/lksctp-dev

[linux-2.6-omap-h63xx.git] / include / scsi / scsi_transport_iscsi.h

diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index d5c218ddc527c457d58e410b52f71f4e189569f5..dbc96ef4cc72020b827e6e04e4dfe0d125091e38 100644 (file)
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -24,6 +24,8 @@
 #define SCSI_TRANSPORT_ISCSI_H
 
 #include <linux/device.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
 #include <scsi/iscsi_if.h>
 
 struct scsi_transport_template;
@@ -79,7 +81,8 @@ struct iscsi_transport {
        char *name;
        unsigned int caps;
        /* LLD sets this to indicate what values it can export to sysfs */
-       unsigned int param_mask;
+       uint64_t param_mask;
+       uint64_t host_param_mask;
        struct scsi_host_template *host_template;
        /* LLD connection data size */
        int conndata_size;
@@ -89,7 +92,8 @@ struct iscsi_transport {
        unsigned int max_conn;
        unsigned int max_cmd_len;
        struct iscsi_cls_session *(*create_session) (struct iscsi_transport *it,
-               struct scsi_transport_template *t, uint32_t sn, uint32_t *hn);
+               struct scsi_transport_template *t, uint16_t, uint16_t,
+               uint32_t sn, uint32_t *hn);
        void (*destroy_session) (struct iscsi_cls_session *session);
        struct iscsi_cls_conn *(*create_conn) (struct iscsi_cls_session *sess,
                                uint32_t cid);
@@ -105,14 +109,18 @@ struct iscsi_transport {
                               enum iscsi_param param, char *buf);
        int (*get_session_param) (struct iscsi_cls_session *session,
                                  enum iscsi_param param, char *buf);
+       int (*get_host_param) (struct Scsi_Host *shost,
+                               enum iscsi_host_param param, char *buf);
+       int (*set_host_param) (struct Scsi_Host *shost,
+                              enum iscsi_host_param param, char *buf,
+                              int buflen);
        int (*send_pdu) (struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
                         char *data, uint32_t data_size);
        void (*get_stats) (struct iscsi_cls_conn *conn,
                           struct iscsi_stats *stats);
-       void (*init_cmd_task) (struct iscsi_cmd_task *ctask);
+       int (*init_cmd_task) (struct iscsi_cmd_task *ctask);
        void (*init_mgmt_task) (struct iscsi_conn *conn,
-                               struct iscsi_mgmt_task *mtask,
-                               char *data, uint32_t data_size);
+                               struct iscsi_mgmt_task *mtask);
        int (*xmit_cmd_task) (struct iscsi_conn *conn,
                              struct iscsi_cmd_task *ctask);
        void (*cleanup_cmd_task) (struct iscsi_conn *conn,
@@ -124,7 +132,7 @@ struct iscsi_transport {
                           uint64_t *ep_handle);
        int (*ep_poll) (uint64_t ep_handle, int timeout_ms);
        void (*ep_disconnect) (uint64_t ep_handle);
-       int (*tgt_dscvr) (enum iscsi_tgt_dscvr type, uint32_t host_no,
+       int (*tgt_dscvr) (struct Scsi_Host *shost, enum iscsi_tgt_dscvr type,
                          uint32_t enable, struct sockaddr *dst_addr);
 };
 
@@ -141,13 +149,6 @@ extern void iscsi_conn_error(struct iscsi_cls_conn *conn, enum iscsi_err error);
 extern int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
                          char *data, uint32_t data_size);
 
-
-/* Connection's states */
-#define ISCSI_CONN_INITIAL_STAGE       0
-#define ISCSI_CONN_STARTED             1
-#define ISCSI_CONN_STOPPED             2
-#define ISCSI_CONN_CLEANUP_WAIT                3
-
 struct iscsi_cls_conn {
        struct list_head conn_list;     /* item in connlist */
        void *dd_data;                  /* LLD private data */
@@ -161,18 +162,23 @@ struct iscsi_cls_conn {
 #define iscsi_dev_to_conn(_dev) \
        container_of(_dev, struct iscsi_cls_conn, dev)
 
-/* Session's states */
-#define ISCSI_STATE_FREE               1
-#define ISCSI_STATE_LOGGED_IN          2
-#define ISCSI_STATE_FAILED             3
-#define ISCSI_STATE_TERMINATE          4
-#define ISCSI_STATE_IN_RECOVERY                5
-#define ISCSI_STATE_RECOVERY_FAILED    6
+#define iscsi_conn_to_session(_conn) \
+       iscsi_dev_to_session(_conn->dev.parent)
+
+/* iscsi class session state */
+enum {
+       ISCSI_SESSION_LOGGED_IN,
+       ISCSI_SESSION_FAILED,
+       ISCSI_SESSION_FREE,
+};
 
 struct iscsi_cls_session {
        struct list_head sess_list;             /* item in session_list */
        struct list_head host_list;
        struct iscsi_transport *transport;
+       spinlock_t lock;
+       struct work_struct scan_work;
+       struct work_struct unbind_work;
 
        /* recovery fields */
        int recovery_tmo;
@@ -180,6 +186,7 @@ struct iscsi_cls_session {
 
        int target_id;
 
+       int state;
        int sid;                                /* session id */
        void *dd_data;                          /* LLD private data */
        struct device dev;      /* sysfs transport/container device */
@@ -196,18 +203,28 @@ struct iscsi_cls_session {
 
 struct iscsi_host {
        struct list_head sessions;
+       atomic_t nr_scans;
        struct mutex mutex;
+       struct workqueue_struct *scan_workq;
+       char scan_workq_name[KOBJ_NAME_LEN];
 };
 
 /*
  * session and connection functions that can be used by HW iSCSI LLDs
  */
+#define iscsi_cls_session_printk(prefix, _cls_session, fmt, a...) \
+       dev_printk(prefix, &(_cls_session)->dev, fmt, ##a)
+
+#define iscsi_cls_conn_printk(prefix, _cls_conn, fmt, a...) \
+       dev_printk(prefix, &(_cls_conn)->dev, fmt, ##a)
+
+extern int iscsi_session_chkready(struct iscsi_cls_session *session);
 extern struct iscsi_cls_session *iscsi_alloc_session(struct Scsi_Host *shost,
                                        struct iscsi_transport *transport);
 extern int iscsi_add_session(struct iscsi_cls_session *session,
                             unsigned int target_id);
-extern int iscsi_if_create_session_done(struct iscsi_cls_conn *conn);
-extern int iscsi_if_destroy_session_done(struct iscsi_cls_conn *conn);
+extern int iscsi_session_event(struct iscsi_cls_session *session,
+                              enum iscsi_uevent_e event);
 extern struct iscsi_cls_session *iscsi_create_session(struct Scsi_Host *shost,
                                                struct iscsi_transport *t,
                                                unsigned int target_id);
@@ -219,6 +236,6 @@ extern struct iscsi_cls_conn *iscsi_create_conn(struct iscsi_cls_session *sess,
 extern int iscsi_destroy_conn(struct iscsi_cls_conn *conn);
 extern void iscsi_unblock_session(struct iscsi_cls_session *session);
 extern void iscsi_block_session(struct iscsi_cls_session *session);
-
+extern int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time);
 
 #endif