Merge rsync://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:

	include/linux/kernel.h

13 files changed, 484 insertions, 146 deletions

diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index e5618b90996..253797c6009 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -43,6 +43,10 @@ enum iscsi_uevent_e {
 	ISCSI_UEVENT_GET_STATS		= UEVENT_BASE + 10,
 	ISCSI_UEVENT_GET_PARAM		= UEVENT_BASE + 11,
 
+	ISCSI_UEVENT_TRANSPORT_EP_CONNECT	= UEVENT_BASE + 12,
+	ISCSI_UEVENT_TRANSPORT_EP_POLL		= UEVENT_BASE + 13,
+	ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT	= UEVENT_BASE + 14,
+
 	/* up events */
 	ISCSI_KEVENT_RECV_PDU		= KEVENT_BASE + 1,
 	ISCSI_KEVENT_CONN_ERROR		= KEVENT_BASE + 2,
@@ -60,61 +64,83 @@ struct iscsi_uevent {
 			uint32_t	initial_cmdsn;
 		} c_session;
 		struct msg_destroy_session {
-			uint64_t	session_handle;
 			uint32_t	sid;
 		} d_session;
 		struct msg_create_conn {
-			uint64_t	session_handle;
-			uint32_t	cid;
 			uint32_t	sid;
+			uint32_t	cid;
 		} c_conn;
 		struct msg_bind_conn {
-			uint64_t	session_handle;
-			uint64_t	conn_handle;
-			uint32_t	transport_fd;
+			uint32_t	sid;
+			uint32_t	cid;
+			uint64_t	transport_eph;
 			uint32_t	is_leading;
 		} b_conn;
 		struct msg_destroy_conn {
-			uint64_t	conn_handle;
+			uint32_t	sid;
 			uint32_t	cid;
 		} d_conn;
 		struct msg_send_pdu {
+			uint32_t	sid;
+			uint32_t	cid;
 			uint32_t	hdr_size;
 			uint32_t	data_size;
-			uint64_t	conn_handle;
 		} send_pdu;
 		struct msg_set_param {
-			uint64_t	conn_handle;
+			uint32_t	sid;
+			uint32_t	cid;
 			uint32_t	param; /* enum iscsi_param */
-			uint32_t	value;
+			uint32_t	len;
 		} set_param;
 		struct msg_start_conn {
-			uint64_t	conn_handle;
+			uint32_t	sid;
+			uint32_t	cid;
 		} start_conn;
 		struct msg_stop_conn {
+			uint32_t	sid;
+			uint32_t	cid;
 			uint64_t	conn_handle;
 			uint32_t	flag;
 		} stop_conn;
 		struct msg_get_stats {
-			uint64_t	conn_handle;
+			uint32_t	sid;
+			uint32_t	cid;
 		} get_stats;
+		struct msg_transport_connect {
+			uint32_t	non_blocking;
+		} ep_connect;
+		struct msg_transport_poll {
+			uint64_t	ep_handle;
+			uint32_t	timeout_ms;
+		} ep_poll;
+		struct msg_transport_disconnect {
+			uint64_t	ep_handle;
+		} ep_disconnect;
 	} u;
 	union {
 		/* messages k -> u */
-		uint64_t		handle;
 		int			retcode;
 		struct msg_create_session_ret {
-			uint64_t	session_handle;
 			uint32_t	sid;
+			uint32_t	host_no;
 		} c_session_ret;
+		struct msg_create_conn_ret {
+			uint32_t	sid;
+			uint32_t	cid;
+		} c_conn_ret;
 		struct msg_recv_req {
+			uint32_t	sid;
+			uint32_t	cid;
 			uint64_t	recv_handle;
-			uint64_t	conn_handle;
 		} recv_req;
 		struct msg_conn_error {
-			uint64_t	conn_handle;
+			uint32_t	sid;
+			uint32_t	cid;
 			uint32_t	error; /* enum iscsi_err */
 		} connerror;
+		struct msg_transport_connect_ret {
+			uint64_t	handle;
+		} ep_connect_ret;
 	} r;
 } __attribute__ ((aligned (sizeof(uint64_t))));
 
@@ -139,29 +165,66 @@ enum iscsi_err {
 	ISCSI_ERR_SESSION_FAILED	= ISCSI_ERR_BASE + 13,
 	ISCSI_ERR_HDR_DGST		= ISCSI_ERR_BASE + 14,
 	ISCSI_ERR_DATA_DGST		= ISCSI_ERR_BASE + 15,
-	ISCSI_ERR_PARAM_NOT_FOUND	= ISCSI_ERR_BASE + 16
+	ISCSI_ERR_PARAM_NOT_FOUND	= ISCSI_ERR_BASE + 16,
+	ISCSI_ERR_NO_SCSI_CMD		= ISCSI_ERR_BASE + 17,
 };
 
 /*
  * iSCSI Parameters (RFC3720)
  */
 enum iscsi_param {
-	ISCSI_PARAM_MAX_RECV_DLENGTH	= 0,
-	ISCSI_PARAM_MAX_XMIT_DLENGTH	= 1,
-	ISCSI_PARAM_HDRDGST_EN		= 2,
-	ISCSI_PARAM_DATADGST_EN		= 3,
-	ISCSI_PARAM_INITIAL_R2T_EN	= 4,
-	ISCSI_PARAM_MAX_R2T		= 5,
-	ISCSI_PARAM_IMM_DATA_EN		= 6,
-	ISCSI_PARAM_FIRST_BURST		= 7,
-	ISCSI_PARAM_MAX_BURST		= 8,
-	ISCSI_PARAM_PDU_INORDER_EN	= 9,
-	ISCSI_PARAM_DATASEQ_INORDER_EN	= 10,
-	ISCSI_PARAM_ERL			= 11,
-	ISCSI_PARAM_IFMARKER_EN		= 12,
-	ISCSI_PARAM_OFMARKER_EN		= 13,
+	/* passed in using netlink set param */
+	ISCSI_PARAM_MAX_RECV_DLENGTH,
+	ISCSI_PARAM_MAX_XMIT_DLENGTH,
+	ISCSI_PARAM_HDRDGST_EN,
+	ISCSI_PARAM_DATADGST_EN,
+	ISCSI_PARAM_INITIAL_R2T_EN,
+	ISCSI_PARAM_MAX_R2T,
+	ISCSI_PARAM_IMM_DATA_EN,
+	ISCSI_PARAM_FIRST_BURST,
+	ISCSI_PARAM_MAX_BURST,
+	ISCSI_PARAM_PDU_INORDER_EN,
+	ISCSI_PARAM_DATASEQ_INORDER_EN,
+	ISCSI_PARAM_ERL,
+	ISCSI_PARAM_IFMARKER_EN,
+	ISCSI_PARAM_OFMARKER_EN,
+	ISCSI_PARAM_EXP_STATSN,
+	ISCSI_PARAM_TARGET_NAME,
+	ISCSI_PARAM_TPGT,
+	ISCSI_PARAM_PERSISTENT_ADDRESS,
+	ISCSI_PARAM_PERSISTENT_PORT,
+	ISCSI_PARAM_SESS_RECOVERY_TMO,
+
+	/* pased in through bind conn using transport_fd */
+	ISCSI_PARAM_CONN_PORT,
+	ISCSI_PARAM_CONN_ADDRESS,
+
+	/* must always be last */
+	ISCSI_PARAM_MAX,
 };
-#define ISCSI_PARAM_MAX			14
+
+#define ISCSI_MAX_RECV_DLENGTH		(1 << ISCSI_PARAM_MAX_RECV_DLENGTH)
+#define ISCSI_MAX_XMIT_DLENGTH		(1 << ISCSI_PARAM_MAX_XMIT_DLENGTH)
+#define ISCSI_HDRDGST_EN		(1 << ISCSI_PARAM_HDRDGST_EN)
+#define ISCSI_DATADGST_EN		(1 << ISCSI_PARAM_DATADGST_EN)
+#define ISCSI_INITIAL_R2T_EN		(1 << ISCSI_PARAM_INITIAL_R2T_EN)
+#define ISCSI_MAX_R2T			(1 << ISCSI_PARAM_MAX_R2T)
+#define ISCSI_IMM_DATA_EN		(1 << ISCSI_PARAM_IMM_DATA_EN)
+#define ISCSI_FIRST_BURST		(1 << ISCSI_PARAM_FIRST_BURST)
+#define ISCSI_MAX_BURST			(1 << ISCSI_PARAM_MAX_BURST)
+#define ISCSI_PDU_INORDER_EN		(1 << ISCSI_PARAM_PDU_INORDER_EN)
+#define ISCSI_DATASEQ_INORDER_EN	(1 << ISCSI_PARAM_DATASEQ_INORDER_EN)
+#define ISCSI_ERL			(1 << ISCSI_PARAM_ERL)
+#define ISCSI_IFMARKER_EN		(1 << ISCSI_PARAM_IFMARKER_EN)
+#define ISCSI_OFMARKER_EN		(1 << ISCSI_PARAM_OFMARKER_EN)
+#define ISCSI_EXP_STATSN		(1 << ISCSI_PARAM_EXP_STATSN)
+#define ISCSI_TARGET_NAME		(1 << ISCSI_PARAM_TARGET_NAME)
+#define ISCSI_TPGT			(1 << ISCSI_PARAM_TPGT)
+#define ISCSI_PERSISTENT_ADDRESS	(1 << ISCSI_PARAM_PERSISTENT_ADDRESS)
+#define ISCSI_PERSISTENT_PORT		(1 << ISCSI_PARAM_PERSISTENT_PORT)
+#define ISCSI_SESS_RECOVERY_TMO		(1 << ISCSI_PARAM_SESS_RECOVERY_TMO)
+#define ISCSI_CONN_PORT			(1 << ISCSI_PARAM_CONN_PORT)
+#define ISCSI_CONN_ADDRESS		(1 << ISCSI_PARAM_CONN_ADDRESS)
 
 #define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
 #define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h
index 4feda05fdf2..02f6e4b9e69 100644
--- a/include/scsi/iscsi_proto.h
+++ b/include/scsi/iscsi_proto.h
@@ -21,8 +21,6 @@
 #ifndef ISCSI_PROTO_H
 #define ISCSI_PROTO_H
 
-#define ISCSI_VERSION_STR	"0.3"
-#define ISCSI_DATE_STR		"22-Apr-2005"
 #define ISCSI_DRAFT20_VERSION	0x00
 
 /* default iSCSI listen port for incoming connections */
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
new file mode 100644
index 00000000000..cbf7e58bd6f
--- /dev/null
+++ b/include/scsi/libiscsi.h
@@ -0,0 +1,282 @@
+/*
+ * iSCSI lib definitions
+ *
+ * Copyright (C) 2006 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004 - 2006 Mike Christie
+ * Copyright (C) 2004 - 2005 Dmitry Yusupov
+ * Copyright (C) 2004 - 2005 Alex Aizman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#ifndef LIBISCSI_H
+#define LIBISCSI_H
+
+#include <linux/types.h>
+#include <linux/mutex.h>
+#include <scsi/iscsi_proto.h>
+#include <scsi/iscsi_if.h>
+
+struct scsi_transport_template;
+struct scsi_device;
+struct Scsi_Host;
+struct scsi_cmnd;
+struct socket;
+struct iscsi_transport;
+struct iscsi_cls_session;
+struct iscsi_cls_conn;
+struct iscsi_session;
+struct iscsi_nopin;
+
+/* #define DEBUG_SCSI */
+#ifdef DEBUG_SCSI
+#define debug_scsi(fmt...) printk(KERN_INFO "iscsi: " fmt)
+#else
+#define debug_scsi(fmt...)
+#endif
+
+#define ISCSI_XMIT_CMDS_MAX	128	/* must be power of 2 */
+#define ISCSI_MGMT_CMDS_MAX	32	/* must be power of 2 */
+#define ISCSI_CONN_MAX			1
+
+#define ISCSI_MGMT_ITT_OFFSET	0xa00
+
+#define ISCSI_DEF_CMD_PER_LUN		32
+#define ISCSI_MAX_CMD_PER_LUN		128
+
+/* Task Mgmt states */
+#define TMABORT_INITIAL			0x0
+#define TMABORT_SUCCESS			0x1
+#define TMABORT_FAILED			0x2
+#define TMABORT_TIMEDOUT		0x3
+
+/* Connection suspend "bit" */
+#define ISCSI_SUSPEND_BIT		1
+
+#define ISCSI_ITT_MASK			(0xfff)
+#define ISCSI_CID_SHIFT			12
+#define ISCSI_CID_MASK			(0xffff << ISCSI_CID_SHIFT)
+#define ISCSI_AGE_SHIFT			28
+#define ISCSI_AGE_MASK			(0xf << ISCSI_AGE_SHIFT)
+
+struct iscsi_mgmt_task {
+	/*
+	 * Becuae LLDs allocate their hdr differently, this is a pointer to
+	 * that storage. It must be setup at session creation time.
+	 */
+	struct iscsi_hdr	*hdr;
+	char			*data;		/* mgmt payload */
+	int			data_count;	/* counts data to be sent */
+	uint32_t		itt;		/* this ITT */
+	void			*dd_data;	/* driver/transport data */
+	struct list_head	running;
+};
+
+struct iscsi_cmd_task {
+	/*
+	 * Becuae LLDs allocate their hdr differently, this is a pointer to
+	 * that storage. It must be setup at session creation time.
+	 */
+	struct iscsi_cmd	*hdr;
+	int			itt;		/* this ITT */
+	int			datasn;		/* DataSN */
+
+	uint32_t		unsol_datasn;
+	int			imm_count;	/* imm-data (bytes)   */
+	int			unsol_count;	/* unsolicited (bytes)*/
+	int			data_count;	/* remaining Data-Out */
+	struct scsi_cmnd	*sc;		/* associated SCSI cmd*/
+	int			total_length;
+	struct iscsi_conn	*conn;		/* used connection    */
+	struct iscsi_mgmt_task	*mtask;		/* tmf mtask in progr */
+
+	struct list_head	running;	/* running cmd list */
+	void			*dd_data;	/* driver/transport data */
+};
+
+struct iscsi_conn {
+	struct iscsi_cls_conn	*cls_conn;	/* ptr to class connection */
+	void			*dd_data;	/* iscsi_transport data */
+	struct iscsi_session	*session;	/* parent session */
+	/*
+	 * LLDs should set this lock. It protects the transport recv
+	 * code
+	 */
+	rwlock_t		*recv_lock;
+	/*
+	 * conn_stop() flag: stop to recover, stop to terminate
+	 */
+        int			stop_stage;
+
+	/* iSCSI connection-wide sequencing */
+	uint32_t		exp_statsn;
+
+	/* control data */
+	int			id;		/* CID */
+	struct list_head	item;		/* maintains list of conns */
+	int			c_stage;	/* connection state */
+	struct iscsi_mgmt_task	*login_mtask;	/* mtask used for login/text */
+	struct iscsi_mgmt_task	*mtask;		/* xmit mtask in progress */
+	struct iscsi_cmd_task	*ctask;		/* xmit ctask in progress */
+
+	/* xmit */
+	struct kfifo		*immqueue;	/* immediate xmit queue */
+	struct kfifo		*mgmtqueue;	/* mgmt (control) xmit queue */
+	struct list_head	mgmt_run_list;	/* list of control tasks */
+	struct kfifo		*xmitqueue;	/* data-path cmd queue */
+	struct list_head	run_list;	/* list of cmds in progress */
+	struct work_struct	xmitwork;	/* per-conn. xmit workqueue */
+	/*
+	 * serializes connection xmit, access to kfifos:
+	 * xmitqueue, immqueue, mgmtqueue
+	 */
+	struct mutex		xmitmutex;
+
+	unsigned long		suspend_tx;	/* suspend Tx */
+	unsigned long		suspend_rx;	/* suspend Rx */
+
+	/* abort */
+	wait_queue_head_t	ehwait;		/* used in eh_abort() */
+	struct iscsi_tm		tmhdr;
+	struct timer_list	tmabort_timer;
+	int			tmabort_state;	/* see TMABORT_INITIAL, etc.*/
+
+	/* negotiated params */
+	int			max_recv_dlength; /* initiator_max_recv_dsl*/
+	int			max_xmit_dlength; /* target_max_recv_dsl */
+	int			hdrdgst_en;
+	int			datadgst_en;
+
+	/* MIB-statistics */
+	uint64_t		txdata_octets;
+	uint64_t		rxdata_octets;
+	uint32_t		scsicmd_pdus_cnt;
+	uint32_t		dataout_pdus_cnt;
+	uint32_t		scsirsp_pdus_cnt;
+	uint32_t		datain_pdus_cnt;
+	uint32_t		r2t_pdus_cnt;
+	uint32_t		tmfcmd_pdus_cnt;
+	int32_t			tmfrsp_pdus_cnt;
+
+	/* custom statistics */
+	uint32_t		eh_abort_cnt;
+};
+
+struct iscsi_queue {
+	struct kfifo		*queue;		/* FIFO Queue */
+	void			**pool;		/* Pool of elements */
+	int			max;		/* Max number of elements */
+};
+
+struct iscsi_session {
+	/* iSCSI session-wide sequencing */
+	uint32_t		cmdsn;
+	uint32_t		exp_cmdsn;
+	uint32_t		max_cmdsn;
+
+	/* configuration */
+	int			initial_r2t_en;
+	int			max_r2t;
+	int			imm_data_en;
+	int			first_burst;
+	int			max_burst;
+	int			time2wait;
+	int			time2retain;
+	int			pdu_inorder_en;
+	int			dataseq_inorder_en;
+	int			erl;
+	int			ifmarker_en;
+	int			ofmarker_en;
+
+	/* control data */
+	struct iscsi_transport	*tt;
+	struct Scsi_Host	*host;
+	struct iscsi_conn	*leadconn;	/* leading connection */
+	spinlock_t		lock;		/* protects session state, *
+						 * sequence numbers,       *
+						 * session resources:      *
+						 * - cmdpool,		   *
+						 * - mgmtpool,		   *
+						 * - r2tpool		   */
+	int			state;		/* session state           */
+	struct list_head	item;
+	int			age;		/* counts session re-opens */
+
+	struct list_head	connections;	/* list of connections */
+	int			cmds_max;	/* size of cmds array */
+	struct iscsi_cmd_task	**cmds;		/* Original Cmds arr */
+	struct iscsi_queue	cmdpool;	/* PDU's pool */
+	int			mgmtpool_max;	/* size of mgmt array */
+	struct iscsi_mgmt_task	**mgmt_cmds;	/* Original mgmt arr */
+	struct iscsi_queue	mgmtpool;	/* Mgmt PDU's pool */
+};
+
+/*
+ * scsi host template
+ */
+extern int iscsi_change_queue_depth(struct scsi_device *sdev, int depth);
+extern int iscsi_eh_abort(struct scsi_cmnd *sc);
+extern int iscsi_eh_host_reset(struct scsi_cmnd *sc);
+extern int iscsi_queuecommand(struct scsi_cmnd *sc,
+			      void (*done)(struct scsi_cmnd *));
+
+/*
+ * session management
+ */
+extern struct iscsi_cls_session *
+iscsi_session_setup(struct iscsi_transport *, struct scsi_transport_template *,
+		    int, int, uint32_t, uint32_t *);
+extern void iscsi_session_teardown(struct iscsi_cls_session *);
+extern struct iscsi_session *class_to_transport_session(struct iscsi_cls_session *);
+extern void iscsi_session_recovery_timedout(struct iscsi_cls_session *);
+
+#define session_to_cls(_sess) \
+	hostdata_session(_sess->host->hostdata)
+
+/*
+ * connection management
+ */
+extern struct iscsi_cls_conn *iscsi_conn_setup(struct iscsi_cls_session *,
+					       uint32_t);
+extern void iscsi_conn_teardown(struct iscsi_cls_conn *);
+extern int iscsi_conn_start(struct iscsi_cls_conn *);
+extern void iscsi_conn_stop(struct iscsi_cls_conn *, int);
+extern int iscsi_conn_bind(struct iscsi_cls_session *, struct iscsi_cls_conn *,
+			   int);
+extern void iscsi_conn_failure(struct iscsi_conn *conn, enum iscsi_err err);
+
+/*
+ * pdu and task processing
+ */
+extern int iscsi_check_assign_cmdsn(struct iscsi_session *,
+				    struct iscsi_nopin *);
+extern void iscsi_prep_unsolicit_data_pdu(struct iscsi_cmd_task *,
+					struct iscsi_data *hdr,
+					int transport_data_cnt);
+extern int iscsi_conn_send_pdu(struct iscsi_cls_conn *, struct iscsi_hdr *,
+				char *, uint32_t);
+extern int iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *,
+			      char *, int);
+extern int __iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *,
+				char *, int);
+extern int iscsi_verify_itt(struct iscsi_conn *, struct iscsi_hdr *,
+			    uint32_t *);
+
+/*
+ * generic helpers
+ */
+extern void iscsi_pool_free(struct iscsi_queue *, void **);
+extern int iscsi_pool_init(struct iscsi_queue *, int, void ***, int);
+
+#endif
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 1ace1b9fe53..e46cd404bd7 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -9,7 +9,6 @@
 struct request;
 struct scatterlist;
 struct scsi_device;
-struct scsi_request;
 
 
 /* embedded in scsi_cmnd */
@@ -29,13 +28,8 @@ struct scsi_pointer {
 };
 
 struct scsi_cmnd {
-	int     sc_magic;
-
 	struct scsi_device *device;
-	struct scsi_request *sc_request;
-
 	struct list_head list;  /* scsi_cmnd participates in queue lists */
-
 	struct list_head eh_entry; /* entry for the host eh_cmd_q */
 	int eh_eflags;		/* Used by error handlr */
 	void (*done) (struct scsi_cmnd *);	/* Mid-level done function */
@@ -151,5 +145,10 @@ extern struct scsi_cmnd *scsi_get_command(struct scsi_device *, gfp_t);
 extern void scsi_put_command(struct scsi_cmnd *);
 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int, unsigned int);
 extern void scsi_finish_command(struct scsi_cmnd *cmd);
+extern void scsi_req_abort_cmd(struct scsi_cmnd *cmd);
+
+extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
+				 size_t *offset, size_t *len);
+extern void scsi_kunmap_atomic_sg(void *virt);
 
 #endif /* _SCSI_SCSI_CMND_H */
diff --git a/include/scsi/scsi_dbg.h b/include/scsi/scsi_dbg.h
index 4d69dee66d4..3bbbfbe8cbf 100644
--- a/include/scsi/scsi_dbg.h
+++ b/include/scsi/scsi_dbg.h
@@ -2,14 +2,12 @@
 #define _SCSI_SCSI_DBG_H
 
 struct scsi_cmnd;
-struct scsi_request;
 struct scsi_sense_hdr;
 
 extern void scsi_print_command(struct scsi_cmnd *);
 extern void scsi_print_sense_hdr(const char *, struct scsi_sense_hdr *);
 extern void __scsi_print_command(unsigned char *);
 extern void scsi_print_sense(const char *, struct scsi_cmnd *);
-extern void scsi_print_req_sense(const char *, struct scsi_request *);
 extern void __scsi_print_sense(const char *name,
 			       const unsigned char *sense_buffer,
 			       int sense_len);
diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h
index d31b16d25a0..b4ddd3b18b4 100644
--- a/include/scsi/scsi_devinfo.h
+++ b/include/scsi/scsi_devinfo.h
@@ -29,4 +29,5 @@
 #define BLIST_SELECT_NO_ATN	0x200000 /* select without ATN */
 #define BLIST_RETRY_HWERROR	0x400000 /* retry HARDWARE_ERROR */
 #define BLIST_MAX_512		0x800000 /* maximum 512 sector cdb length */
+#define BLIST_ATTACH_PQ3	0x1000000 /* Scan: Attach to PQ3 devices */
 #endif
diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h
index d160880b2a8..c5c0f6762a0 100644
--- a/include/scsi/scsi_eh.h
+++ b/include/scsi/scsi_eh.h
@@ -3,7 +3,6 @@
 
 struct scsi_cmnd;
 struct scsi_device;
-struct scsi_request;
 struct Scsi_Host;
 
 /*
@@ -43,8 +42,6 @@ extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
 extern int scsi_block_when_processing_errors(struct scsi_device *);
 extern int scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
 		struct scsi_sense_hdr *sshdr);
-extern int scsi_request_normalize_sense(struct scsi_request *sreq,
-		struct scsi_sense_hdr *sshdr);
 extern int scsi_command_normalize_sense(struct scsi_cmnd *cmd,
 		struct scsi_sense_hdr *sshdr);
 
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index de6ce541a04..a42efd6e4be 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -472,6 +472,7 @@ struct Scsi_Host {
 	 */
 	unsigned int host_busy;		   /* commands actually active on low-level */
 	unsigned int host_failed;	   /* commands that failed. */
+	unsigned int host_eh_scheduled;    /* EH scheduled without command */
     
 	unsigned short host_no;  /* Used for IOCTL_GET_IDLUN, /proc/scsi et al. */
 	int resetting; /* if set, it means that last_reset is a valid value */
diff --git a/include/scsi/scsi_request.h b/include/scsi/scsi_request.h
deleted file mode 100644
index 98d69fdb851..00000000000
--- a/include/scsi/scsi_request.h
+++ /dev/null
@@ -1,54 +0,0 @@
-#ifndef _SCSI_SCSI_REQUEST_H
-#define _SCSI_SCSI_REQUEST_H
-
-#include <scsi/scsi_cmnd.h>
-
-struct request;
-struct scsi_cmnd;
-struct scsi_device;
-struct Scsi_Host;
-
-
-/*
- * This is essentially a slimmed down version of Scsi_Cmnd.  The point of
- * having this is that requests that are injected into the queue as result
- * of things like ioctls and character devices shouldn't be using a
- * Scsi_Cmnd until such a time that the command is actually at the head
- * of the queue and being sent to the driver.
- */
-struct scsi_request {
-	int     sr_magic;
-	int     sr_result;	/* Status code from lower level driver */
-	unsigned char sr_sense_buffer[SCSI_SENSE_BUFFERSIZE];		/* obtained by REQUEST SENSE
-						 * when CHECK CONDITION is
-						 * received on original command 
-						 * (auto-sense) */
-
-	struct Scsi_Host *sr_host;
-	struct scsi_device *sr_device;
-	struct scsi_cmnd *sr_command;
-	struct request *sr_request;	/* A copy of the command we are
-				   working on */
-	unsigned sr_bufflen;	/* Size of data buffer */
-	void *sr_buffer;		/* Data buffer */
-	int sr_allowed;
-	enum dma_data_direction sr_data_direction;
-	unsigned char sr_cmd_len;
-	unsigned char sr_cmnd[MAX_COMMAND_SIZE];
-	void (*sr_done) (struct scsi_cmnd *);	/* Mid-level done function */
-	int sr_timeout_per_command;
-	unsigned short sr_use_sg;	/* Number of pieces of scatter-gather */
-	unsigned short sr_sglist_len;	/* size of malloc'd scatter-gather list */
-	unsigned sr_underflow;	/* Return error if less than
-				   this amount is transferred */
- 	void *upper_private_data;	/* reserved for owner (usually upper
- 					   level driver) of this request */
-};
-
-extern struct scsi_request *scsi_allocate_request(struct scsi_device *, gfp_t);
-extern void scsi_release_request(struct scsi_request *);
-extern void scsi_do_req(struct scsi_request *, const void *cmnd,
-			void *buffer, unsigned bufflen,
-			void (*done) (struct scsi_cmnd *),
-			int timeout, int retries);
-#endif /* _SCSI_SCSI_REQUEST_H */
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index 5626225bd3a..6d28b031765 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -27,7 +27,6 @@
 #ifndef SCSI_TRANSPORT_FC_H
 #define SCSI_TRANSPORT_FC_H
 
-#include <linux/config.h>
 #include <linux/sched.h>
 #include <scsi/scsi.h>
 
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index b41cf077e54..b684426a590 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -2,7 +2,7 @@
  * iSCSI transport class definitions
  *
  * Copyright (C) IBM Corporation, 2004
- * Copyright (C) Mike Christie, 2004 - 2005
+ * Copyright (C) Mike Christie, 2004 - 2006
  * Copyright (C) Dmitry Yusupov, 2004 - 2005
  * Copyright (C) Alex Aizman, 2004 - 2005
  *
@@ -27,9 +27,13 @@
 #include <scsi/iscsi_if.h>
 
 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 iscsi_transport - iSCSI Transport template
@@ -46,6 +50,24 @@ struct iscsi_cls_conn;
  * @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. 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
+ *			from abort task then connection is not suspended
+ *			or terminated but sk_callback_lock is held
  *
  * Template API provided by iSCSI Transport
  */
@@ -53,38 +75,58 @@ struct iscsi_transport {
 	struct module *owner;
 	char *name;
 	unsigned int caps;
+	/* LLD sets this to indicate what values it can export to sysfs */
+	unsigned int param_mask;
 	struct scsi_host_template *host_template;
-	/* LLD session/scsi_host data size */
-	int hostdata_size;
-	/* LLD iscsi_host data size */
-	int ihostdata_size;
 	/* LLD connection data size */
 	int conndata_size;
+	/* LLD session data size */
+	int sessiondata_size;
 	int max_lun;
 	unsigned int max_conn;
 	unsigned int max_cmd_len;
-	struct iscsi_cls_session *(*create_session)
-		(struct scsi_transport_template *t, uint32_t sn, uint32_t *sid);
+	struct iscsi_cls_session *(*create_session) (struct iscsi_transport *it,
+		struct scsi_transport_template *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);
 	int (*bind_conn) (struct iscsi_cls_session *session,
 			  struct iscsi_cls_conn *cls_conn,
-			  uint32_t transport_fd, int is_leading);
+			  uint64_t transport_eph, int is_leading);
 	int (*start_conn) (struct iscsi_cls_conn *conn);
 	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);
 	int (*get_conn_param) (struct iscsi_cls_conn *conn,
-			       enum iscsi_param param,
-			       uint32_t *value);
+			       enum iscsi_param param, uint32_t *value);
 	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);
 	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,
+				char *data, uint32_t data_size);
+	int (*xmit_cmd_task) (struct iscsi_conn *conn,
+			      struct iscsi_cmd_task *ctask);
+	void (*cleanup_cmd_task) (struct iscsi_conn *conn,
+				  struct iscsi_cmd_task *ctask);
+	int (*xmit_mgmt_task) (struct iscsi_conn *conn,
+			       struct iscsi_mgmt_task *mtask);
+	void (*session_recovery_timedout) (struct iscsi_cls_session *session);
+	int (*ep_connect) (struct sockaddr *dst_addr, int non_blocking,
+			   uint64_t *ep_handle);
+	int (*ep_poll) (uint64_t ep_handle, int timeout_ms);
+	void (*ep_disconnect) (uint64_t ep_handle);
 };
 
 /*
@@ -100,10 +142,26 @@ 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 */
 	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;
@@ -114,9 +172,32 @@ 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
+
 struct iscsi_cls_session {
 	struct list_head sess_list;		/* item in session_list */
+	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;
+
+	int target_id;
+	int channel;
+
+	int sid;				/* session id */
+	void *dd_data;				/* LLD private data */
 	struct device dev;	/* sysfs transport/container device */
 };
 
@@ -126,22 +207,22 @@ struct iscsi_cls_session {
 #define iscsi_session_to_shost(_session) \
 	dev_to_shost(_session->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_create_session(struct Scsi_Host *shost,
-				struct iscsi_transport *t);
+				struct iscsi_transport *t, int channel);
 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 int iscsi_destroy_conn(struct iscsi_cls_conn *conn);
-
-/*
- * session functions used by software iscsi
- */
-extern struct Scsi_Host *
-iscsi_transport_create_session(struct scsi_transport_template *scsit,
-                               struct iscsi_transport *transport);
-extern int iscsi_transport_destroy_session(struct Scsi_Host *shost);
+extern void iscsi_unblock_session(struct iscsi_cls_session *session);
+extern void iscsi_block_session(struct iscsi_cls_session *session);
 
 #endif
diff --git a/include/scsi/scsi_transport_spi.h b/include/scsi/scsi_transport_spi.h
index 5e1d61913d4..302680c0c0d 100644
--- a/include/scsi/scsi_transport_spi.h
+++ b/include/scsi/scsi_transport_spi.h
@@ -20,7 +20,6 @@
 #ifndef SCSI_TRANSPORT_SPI_H
 #define SCSI_TRANSPORT_SPI_H
 
-#include <linux/config.h>
 #include <linux/transport_class.h>
 #include <linux/mutex.h>
 
diff --git a/include/scsi/sg_request.h b/include/scsi/sg_request.h
deleted file mode 100644
index 57ff525bdd3..00000000000
--- a/include/scsi/sg_request.h
+++ /dev/null
@@ -1,26 +0,0 @@
-typedef struct scsi_request Scsi_Request;
-
-static Scsi_Request *dummy_cmdp;	/* only used for sizeof */
-
-typedef struct sg_scatter_hold { /* holding area for scsi scatter gather info */
-	unsigned short k_use_sg; /* Count of kernel scatter-gather pieces */
-	unsigned short sglist_len; /* size of malloc'd scatter-gather list ++ */
-	unsigned bufflen;	/* Size of (aggregate) data buffer */
-	unsigned b_malloc_len;	/* actual len malloc'ed in buffer */
-	void *buffer;		/* Data buffer or scatter list (k_use_sg>0) */
-	char dio_in_use;	/* 0->indirect IO (or mmap), 1->dio */
-	unsigned char cmd_opcode; /* first byte of command */
-} Sg_scatter_hold;
-
-typedef struct sg_request {	/* SG_MAX_QUEUE requests outstanding per file */
-	Scsi_Request *my_cmdp;	/* != 0  when request with lower levels */
-	struct sg_request *nextrp;	/* NULL -> tail request (slist) */
-	struct sg_fd *parentfp;	/* NULL -> not in use */
-	Sg_scatter_hold data;	/* hold buffer, perhaps scatter list */
-	sg_io_hdr_t header;	/* scsi command+info, see <scsi/sg.h> */
-	unsigned char sense_b[sizeof (dummy_cmdp->sr_sense_buffer)];
-	char res_used;		/* 1 -> using reserve buffer, 0 -> not ... */
-	char orphan;		/* 1 -> drop on sight, 0 -> normal */
-	char sg_io_owned;	/* 1 -> packet belongs to SG_IO */
-	volatile char done;	/* 0->before bh, 1->before read, 2->read */
-} Sg_request;