struct scsi_transport_template;
struct iscsi_transport;
struct Scsi_Host;
-struct mempool_zone;
struct iscsi_cls_conn;
struct iscsi_conn;
struct iscsi_cmd_task;
struct iscsi_mgmt_task;
+struct sockaddr;
/**
* struct iscsi_transport - iSCSI Transport template
* @bind_conn: associate this connection with existing iSCSI session
* and specified transport descriptor
* @destroy_conn: destroy inactive iSCSI connection
- * @set_param: set iSCSI Data-Path operational parameter
+ * @set_param: set iSCSI parameter. Return 0 on success, -ENODATA
+ * when param is not supported, and a -Exx value on other
+ * error.
+ * @get_param get iSCSI parameter. Must return number of bytes
+ * copied to buffer on success, -ENODATA when param
+ * is not supported, and a -Exx value on other error
* @start_conn: set connection to be operational
* @stop_conn: suspend/recover/terminate connection
* @send_pdu: send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text.
* @session_recovery_timedout: notify LLD a block during recovery timed out
- * @suspend_conn_recv: susepend the recv side of the connection
- * @termincate_conn: destroy socket connection. Called with mutex lock.
* @init_cmd_task: Initialize a iscsi_cmd_task and any internal structs.
* Called from queuecommand with session lock held.
* @init_mgmt_task: Initialize a iscsi_mgmt_task and any internal structs.
* Called from iscsi_conn_send_generic with xmitmutex.
- * @xmit_cmd_task: requests LLD to transfer cmd task
- * @xmit_mgmt_task: requests LLD to transfer mgmt task
+ * @xmit_cmd_task: Requests LLD to transfer cmd task. Returns 0 or the
+ * the number of bytes transferred on success, and -Exyz
+ * value on error.
+ * @xmit_mgmt_task: Requests LLD to transfer mgmt task. Returns 0 or the
+ * the number of bytes transferred on success, and -Exyz
+ * value on error.
* @cleanup_cmd_task: requests LLD to fail cmd task. Called with xmitmutex
* and session->lock after the connection has been
* suspended and terminated during recovery. If called
void (*stop_conn) (struct iscsi_cls_conn *conn, int flag);
void (*destroy_conn) (struct iscsi_cls_conn *conn);
int (*set_param) (struct iscsi_cls_conn *conn, enum iscsi_param param,
- uint32_t value);
+ char *buf, int buflen);
int (*get_conn_param) (struct iscsi_cls_conn *conn,
- enum iscsi_param param, uint32_t *value);
+ enum iscsi_param param, char *buf);
int (*get_session_param) (struct iscsi_cls_session *session,
- enum iscsi_param param, uint32_t *value);
- int (*get_conn_str_param) (struct iscsi_cls_conn *conn,
- enum iscsi_param param, char *buf);
- int (*get_session_str_param) (struct iscsi_cls_session *session,
- enum iscsi_param param, char *buf);
+ enum iscsi_param param, char *buf);
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 (*suspend_conn_recv) (struct iscsi_conn *conn);
- void (*terminate_conn) (struct iscsi_conn *conn);
void (*init_cmd_task) (struct iscsi_cmd_task *ctask);
void (*init_mgmt_task) (struct iscsi_conn *conn,
struct iscsi_mgmt_task *mtask,
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,
+ uint32_t enable, struct sockaddr *dst_addr);
};
/*
struct iscsi_transport *transport;
uint32_t cid; /* connection id */
- /* portal/group values we got during discovery */
- char *persistent_address;
- int persistent_port;
- /* portal/group values we are currently using */
- char *address;
- int port;
-
int active; /* must be accessed with the connlock */
struct device dev; /* sysfs transport/container device */
- struct mempool_zone *z_error;
- struct mempool_zone *z_pdu;
- struct list_head freequeue;
};
#define iscsi_dev_to_conn(_dev) \
struct list_head host_list;
struct iscsi_transport *transport;
- /* iSCSI values used as unique id by userspace. */
- char *targetname;
- int tpgt;
-
/* recovery fields */
int recovery_tmo;
- struct work_struct recovery_work;
+ struct delayed_work recovery_work;
int target_id;
- int channel;
int sid; /* session id */
void *dd_data; /* LLD private data */
#define iscsi_session_to_shost(_session) \
dev_to_shost(_session->dev.parent)
+#define starget_to_session(_stgt) \
+ iscsi_dev_to_session(_stgt->dev.parent)
+
struct iscsi_host {
- int next_target_id;
struct list_head sessions;
struct mutex mutex;
};
/*
* session and connection functions that can be used by HW iSCSI LLDs
*/
+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 struct iscsi_cls_session *iscsi_create_session(struct Scsi_Host *shost,
- struct iscsi_transport *t, int channel);
+ struct iscsi_transport *t,
+ unsigned int target_id);
+extern void iscsi_remove_session(struct iscsi_cls_session *session);
+extern void iscsi_free_session(struct iscsi_cls_session *session);
extern int iscsi_destroy_session(struct iscsi_cls_session *session);
extern struct iscsi_cls_conn *iscsi_create_conn(struct iscsi_cls_session *sess,
uint32_t cid);
extern void iscsi_unblock_session(struct iscsi_cls_session *session);
extern void iscsi_block_session(struct iscsi_cls_session *session);
+
#endif