Merge HEAD from ../scsi-misc-2.6-old

drivers/scsi/Kconfig

@@ -229,7 +229,7 @@ config SCSI_FC_ATTRS
 
 config SCSI_ISCSI_ATTRS
 	tristate "iSCSI Transport Attributes"
-	depends on SCSI
+	depends on SCSI && NET
 	help
 	  If you wish to export transport-specific information about
 	  each attached iSCSI device to sysfs, say Y.
@@ -247,6 +247,30 @@ endmenu
 menu "SCSI low-level drivers"
 	depends on SCSI!=n
 
+config ISCSI_TCP
+	tristate "iSCSI Initiator over TCP/IP"
+	depends on SCSI && INET
+	select CRYPTO
+	select CRYPTO_MD5
+	select CRYPTO_CRC32C
+	select SCSI_ISCSI_ATTRS
+	help
+	 The iSCSI Driver provides a host with the ability to access storage
+	 through an IP network. The driver uses the iSCSI protocol to transport
+	 SCSI requests and responses over a TCP/IP network between the host
+	 (the "initiator") and "targets".  Architecturally, the iSCSI driver
+	 combines with the host's TCP/IP stack, network drivers, and Network
+	 Interface Card (NIC) to provide the same functions as a SCSI or a
+	 Fibre Channel (FC) adapter driver with a Host Bus Adapter (HBA).
+
+	 To compile this driver as a module, choose M here: the
+	 module will be called iscsi_tcp.
+
+	 The userspace component needed to initialize the driver, documentation,
+	 and sample configuration files can be found here:
+
+	 http://linux-iscsi.sf.net
+
 config SGIWD93_SCSI
 	tristate "SGI WD93C93 SCSI Driver"
 	depends on SGI_IP22 && SCSI

drivers/scsi/Makefile

@@ -33,6 +33,7 @@ obj-$(CONFIG_SCSI_FC_ATTRS) 	+= scsi_transport_fc.o
 obj-$(CONFIG_SCSI_ISCSI_ATTRS)	+= scsi_transport_iscsi.o
 obj-$(CONFIG_SCSI_SAS_ATTRS)	+= scsi_transport_sas.o
 
+obj-$(CONFIG_ISCSI_TCP) 	+= iscsi_tcp.o
 obj-$(CONFIG_SCSI_AMIGA7XX)	+= amiga7xx.o	53c7xx.o
 obj-$(CONFIG_A3000_SCSI)	+= a3000.o	wd33c93.o
 obj-$(CONFIG_A2091_SCSI)	+= a2091.o	wd33c93.o

drivers/scsi/aacraid/aachba.c

@@ -608,17 +608,43 @@ static char *container_types[] = {
  * files instead of in OS dependant driver source.
  */
 
-static void setinqstr(int devtype, void *data, int tindex)
+static void setinqstr(struct aac_dev *dev, void *data, int tindex)
 {
 	struct scsi_inq *str;
-	struct aac_driver_ident *mp;
 
-	mp = aac_get_driver_ident(devtype);
-   
 	str = (struct scsi_inq *)(data); /* cast data to scsi inq block */
-
-	inqstrcpy (mp->vname, str->vid); 
-	inqstrcpy (mp->model, str->pid); /* last six chars reserved for vol type */
+	memset(str, ' ', sizeof(*str));
+
+	if (dev->supplement_adapter_info.AdapterTypeText[0]) {
+		char * cp = dev->supplement_adapter_info.AdapterTypeText;
+		int c = sizeof(str->vid);
+		while (*cp && *cp != ' ' && --c)
+			++cp;
+		c = *cp;
+		*cp = '\0';
+		inqstrcpy (dev->supplement_adapter_info.AdapterTypeText,
+		  str->vid); 
+		*cp = c;
+		while (*cp && *cp != ' ')
+			++cp;
+		while (*cp == ' ')
+			++cp;
+		/* last six chars reserved for vol type */
+		c = 0;
+		if (strlen(cp) > sizeof(str->pid)) {
+			c = cp[sizeof(str->pid)];
+			cp[sizeof(str->pid)] = '\0';
+		}
+		inqstrcpy (cp, str->pid);
+		if (c)
+			cp[sizeof(str->pid)] = c;
+	} else {
+		struct aac_driver_ident *mp = aac_get_driver_ident(dev->cardtype);
+   
+		inqstrcpy (mp->vname, str->vid); 
+		/* last six chars reserved for vol type */
+		inqstrcpy (mp->model, str->pid);
+	}
 
 	if (tindex < (sizeof(container_types)/sizeof(char *))){
 		char *findit = str->pid;
@@ -627,7 +653,9 @@ static void setinqstr(int devtype, void *data, int tindex)
 		/* RAID is superfluous in the context of a RAID device */
 		if (memcmp(findit-4, "RAID", 4) == 0)
 			*(findit -= 4) = ' ';
-		inqstrcpy (container_types[tindex], findit + 1);
+		if (((findit - str->pid) + strlen(container_types[tindex]))
+		 < (sizeof(str->pid) + sizeof(str->prl)))
+			inqstrcpy (container_types[tindex], findit + 1);
 	}
 	inqstrcpy ("V1.0", str->prl);
 }
@@ -822,12 +850,12 @@ int aac_get_adapter_info(struct aac_dev* dev)
 		dev->dac_support = (dacmode!=0);
 	}
 	if(dev->dac_support != 0) {
-		if (!pci_set_dma_mask(dev->pdev, 0xFFFFFFFFFFFFFFFFULL) &&
-			!pci_set_consistent_dma_mask(dev->pdev, 0xFFFFFFFFFFFFFFFFULL)) {
+		if (!pci_set_dma_mask(dev->pdev, DMA_64BIT_MASK) &&
+			!pci_set_consistent_dma_mask(dev->pdev, DMA_64BIT_MASK)) {
 			printk(KERN_INFO"%s%d: 64 Bit DAC enabled\n",
 				dev->name, dev->id);
-		} else if (!pci_set_dma_mask(dev->pdev, 0xFFFFFFFFULL) &&
-			!pci_set_consistent_dma_mask(dev->pdev, 0xFFFFFFFFULL)) {
+		} else if (!pci_set_dma_mask(dev->pdev, DMA_32BIT_MASK) &&
+			!pci_set_consistent_dma_mask(dev->pdev, DMA_32BIT_MASK)) {
 			printk(KERN_INFO"%s%d: DMA mask set failed, 64 Bit DAC disabled\n",
 				dev->name, dev->id);
 			dev->dac_support = 0;
@@ -1438,7 +1466,6 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 	struct Scsi_Host *host = scsicmd->device->host;
 	struct aac_dev *dev = (struct aac_dev *)host->hostdata;
 	struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev;
-	int cardtype = dev->cardtype;
 	int ret;
 	
 	/*
@@ -1542,14 +1569,14 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 		 *	see: <vendor>.c i.e. aac.c
 		 */
 		if (scsicmd->device->id == host->this_id) {
-			setinqstr(cardtype, (void *) (inq_data.inqd_vid), (sizeof(container_types)/sizeof(char *)));
+			setinqstr(dev, (void *) (inq_data.inqd_vid), (sizeof(container_types)/sizeof(char *)));
 			inq_data.inqd_pdt = INQD_PDT_PROC;	/* Processor device */
 			aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
 			scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
 			scsicmd->scsi_done(scsicmd);
 			return 0;
 		}
-		setinqstr(cardtype, (void *) (inq_data.inqd_vid), fsa_dev_ptr[cid].type);
+		setinqstr(dev, (void *) (inq_data.inqd_vid), fsa_dev_ptr[cid].type);
 		inq_data.inqd_pdt = INQD_PDT_DA;	/* Direct/random access device */
 		aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
 		return aac_get_container_name(scsicmd, cid);

drivers/scsi/aacraid/aacraid.h

@@ -1560,7 +1560,7 @@ struct fib_ioctl
 
 struct revision
 {
-	__le32 compat;
+	u32 compat;
 	__le32 version;
 	__le32 build;
 };

drivers/scsi/aacraid/commctrl.c

@@ -408,7 +408,7 @@ static int check_revision(struct aac_dev *dev, void __user *arg)
 	char *driver_version = aac_driver_version;
 	u32 version;
 
-	response.compat = cpu_to_le32(1);
+	response.compat = 1;
 	version = (simple_strtol(driver_version, 
 				&driver_version, 10) << 24) | 0x00000400;
 	version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
@@ -574,7 +574,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 				rcode = -ENOMEM;
 				goto cleanup;
 			}
-			sg_user[i] = (void __user *)usg->sg[i].addr;
+			sg_user[i] = (void __user *)(long)usg->sg[i].addr;
 			sg_list[i] = p; // save so we can clean up later
 			sg_indx = i;
 
@@ -624,7 +624,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 				rcode = -ENOMEM;
 				goto cleanup;
 			}
-			sg_user[i] = (void __user *)upsg->sg[i].addr;
+			sg_user[i] = (void __user *)(long)upsg->sg[i].addr;
 			sg_list[i] = p; // save so we can clean up later
 			sg_indx = i;
 

drivers/scsi/aacraid/linit.c

@@ -752,8 +752,8 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
 	if (error)
 		goto out;
 
-	if (pci_set_dma_mask(pdev, 0xFFFFFFFFULL) || 
-			pci_set_consistent_dma_mask(pdev, 0xFFFFFFFFULL))
+	if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) || 
+			pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
 		goto out;
 	/*
 	 * If the quirk31 bit is set, the adapter needs adapter
@@ -797,9 +797,9 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
 	 * address space.
 	 */
 	if (aac_drivers[index].quirks & AAC_QUIRK_31BIT)
-		if (pci_set_dma_mask(pdev, 0xFFFFFFFFULL))
-			goto out_free_fibs;
-
+		if (pci_set_dma_mask(pdev, DMA_32BIT_MASK))
+			goto out_deinit;
+ 
 	aac->maximum_num_channels = aac_drivers[index].channels;
 	error = aac_get_adapter_info(aac);
 	if (error < 0)

drivers/scsi/dc395x.c

@@ -976,6 +976,16 @@ static void send_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
 	}
 }
 
+static inline void pio_trigger(void)
+{
+	static int feedback_requested;
+
+	if (!feedback_requested) {
+		feedback_requested = 1;
+		printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
+		       "to help improve support for your system.\n", __FILE__);
+	}
+}
 
 /* Prepare SRB for being sent to Device DCB w/ command *cmd */
 static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
@@ -2320,6 +2330,7 @@ static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
 					      CFG2_WIDEFIFO);
 			while (DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) != 0x40) {
 				u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+				pio_trigger();
 				*(srb->virt_addr)++ = byte;
 				if (debug_enabled(DBG_PIO))
 					printk(" %02x", byte);
@@ -2331,6 +2342,7 @@ static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
                 /* Read the last byte ... */
 				if (srb->total_xfer_length > 0) {
 					u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+					pio_trigger();
 					*(srb->virt_addr)++ = byte;
 					srb->total_xfer_length--;
 					if (debug_enabled(DBG_PIO))
@@ -2507,6 +2519,7 @@ static void data_io_transfer(struct AdapterCtlBlk *acb,
 				if (debug_enabled(DBG_PIO))
 					printk(" %02x", (unsigned char) *(srb->virt_addr));
 
+				pio_trigger();
 				DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 
 				     *(srb->virt_addr)++);
 

drivers/scsi/iscsi_tcp.h

+/*
+ * iSCSI Initiator TCP Transport
+ * Copyright (C) 2004 Dmitry Yusupov
+ * Copyright (C) 2004 Alex Aizman
+ * Copyright (C) 2005 Mike Christie
+ * maintained by open-iscsi@googlegroups.com
+ *
+ * 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.
+ *
+ * See the file COPYING included with this distribution for more details.
+ */
+
+#ifndef ISCSI_TCP_H
+#define ISCSI_TCP_H
+
+/* Session's states */
+#define ISCSI_STATE_FREE		1
+#define ISCSI_STATE_LOGGED_IN		2
+#define ISCSI_STATE_FAILED		3
+#define ISCSI_STATE_TERMINATE		4
+
+/* 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
+
+/* Connection suspend "bit" */
+#define SUSPEND_BIT			1
+
+/* Socket's Receive state machine */
+#define IN_PROGRESS_WAIT_HEADER		0x0
+#define IN_PROGRESS_HEADER_GATHER	0x1
+#define IN_PROGRESS_DATA_RECV		0x2
+#define IN_PROGRESS_DDIGEST_RECV	0x3
+
+/* Task Mgmt states */
+#define	TMABORT_INITIAL			0x0
+#define	TMABORT_SUCCESS			0x1
+#define	TMABORT_FAILED			0x2
+#define	TMABORT_TIMEDOUT		0x3
+
+/* xmit state machine */
+#define	XMSTATE_IDLE			0x0
+#define	XMSTATE_R_HDR			0x1
+#define	XMSTATE_W_HDR			0x2
+#define	XMSTATE_IMM_HDR			0x4
+#define	XMSTATE_IMM_DATA		0x8
+#define	XMSTATE_UNS_INIT		0x10
+#define	XMSTATE_UNS_HDR			0x20
+#define	XMSTATE_UNS_DATA		0x40
+#define	XMSTATE_SOL_HDR			0x80
+#define	XMSTATE_SOL_DATA		0x100
+#define	XMSTATE_W_PAD			0x200
+#define XMSTATE_DATA_DIGEST		0x400
+
+#define ISCSI_CONN_MAX			1
+#define ISCSI_CONN_RCVBUF_MIN		262144
+#define ISCSI_CONN_SNDBUF_MIN		262144
+#define ISCSI_PAD_LEN			4
+#define ISCSI_R2T_MAX			16
+#define ISCSI_XMIT_CMDS_MAX		128	/* must be power of 2 */
+#define ISCSI_MGMT_CMDS_MAX		32	/* must be power of 2 */
+#define ISCSI_MGMT_ITT_OFFSET		0xa00
+#define ISCSI_SG_TABLESIZE		SG_ALL
+#define ISCSI_CMD_PER_LUN		128
+#define ISCSI_TCP_MAX_CMD_LEN		16
+
+#define ITT_MASK			(0xfff)
+#define CID_SHIFT			12
+#define CID_MASK			(0xffff<<CID_SHIFT)
+#define AGE_SHIFT			28
+#define AGE_MASK			(0xf<<AGE_SHIFT)
+
+struct iscsi_queue {
+	struct kfifo		*queue;		/* FIFO Queue */
+	void			**pool;		/* Pool of elements */
+	int			max;		/* Max number of elements */
+};
+
+struct iscsi_session;
+struct iscsi_cmd_task;
+struct iscsi_mgmt_task;
+
+/* Socket connection recieve helper */
+struct iscsi_tcp_recv {
+	struct iscsi_hdr	*hdr;
+	struct sk_buff		*skb;
+	int			offset;
+	int			len;
+	int			hdr_offset;
+	int			copy;
+	int			copied;
+	int			padding;
+	struct iscsi_cmd_task	*ctask;		/* current cmd in progress */
+
+	/* copied and flipped values */
+	int			opcode;
+	int			flags;
+	int			cmd_status;
+	int			ahslen;
+	int			datalen;
+	uint32_t		itt;
+	int			datadgst;
+};
+
+struct iscsi_conn {
+	struct iscsi_hdr	hdr;		/* header placeholder */
+	char			hdrext[4*sizeof(__u16) +
+				    sizeof(__u32)];
+	int			data_copied;
+	char			*data;		/* data placeholder */
+	struct socket           *sock;          /* TCP socket */
+	int			data_size;	/* actual recv_dlength */
+	int			stop_stage;	/* conn_stop() flag: *
+						 * stop to recover,  *
+						 * stop to terminate */
+	/* iSCSI connection-wide sequencing */
+	uint32_t		exp_statsn;
+	int			hdr_size;	/* PDU header size */
+	unsigned long		suspend_rx;	/* suspend Rx */
+
+	struct crypto_tfm	*rx_tfm;	/* CRC32C (Rx) */
+	struct crypto_tfm	*data_rx_tfm;	/* CRC32C (Rx) for data */
+
+	/* control data */
+	int			senselen;	/* scsi sense length */
+	int			id;		/* CID */
+	struct iscsi_tcp_recv	in;		/* TCP receive context */
+	struct iscsi_session	*session;	/* parent session */
+	struct list_head	item;		/* maintains list of conns */
+	int			in_progress;	/* connection state machine */
+	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 */
+	spinlock_t		lock;		/* FIXME: to be removed */
+
+	/* old values for socket callbacks */
+	void			(*old_data_ready)(struct sock *, int);
+	void			(*old_state_change)(struct sock *);
+	void			(*old_write_space)(struct sock *);
+
+	/* xmit */
+	struct crypto_tfm	*tx_tfm;	/* CRC32C (Tx) */
+	struct crypto_tfm	*data_tx_tfm;	/* CRC32C (Tx) for data */
+	struct kfifo		*writequeue;	/* write cmds for Data-Outs */
+	struct kfifo		*immqueue;	/* immediate xmit queue */
+	struct kfifo		*mgmtqueue;	/* mgmt (control) xmit queue */
+	struct kfifo		*xmitqueue;	/* data-path cmd queue */
+	struct work_struct	xmitwork;	/* per-conn. xmit workqueue */
+	struct semaphore	xmitsema;	/* serializes connection xmit,
+						 * access to kfifos:	  *
+						 * xmitqueue, writequeue, *
+						 * immqueue, mgmtqueue    */
+	unsigned long		suspend_tx;	/* suspend Tx */
+
+	/* abort */
+	wait_queue_head_t	ehwait;		/* used in eh_abort()     */
+	struct iscsi_tm		tmhdr;
+	struct timer_list	tmabort_timer;  /* abort timer */
+	int			tmabort_state;  /* see TMABORT_INITIAL, etc.*/
+
+	/* negotiated params */
+	int			max_recv_dlength;
+	int			max_xmit_dlength;
+	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		sendpage_failures_cnt;
+	uint32_t		discontiguous_hdr_cnt;
+	uint32_t		eh_abort_cnt;
+};
+
+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 Scsi_Host	*host;
+	int			id;
+	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;
+	void			*auth_client;
+	int			conn_cnt;
+	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 */
+};
+
+struct iscsi_buf {
+	struct scatterlist	sg;
+	struct kvec		iov;
+	unsigned int		sent;
+};
+
+struct iscsi_data_task {
+	struct iscsi_data	hdr;			/* PDU */
+	char			hdrext[sizeof(__u32)];	/* Header-Digest */
+	struct list_head	item;			/* data queue item */
+	struct iscsi_buf	digestbuf;		/* digest buffer */
+	uint32_t		digest;			/* data digest */
+};
+#define ISCSI_DTASK_DEFAULT_MAX	ISCSI_SG_TABLESIZE * PAGE_SIZE / 512
+
+struct iscsi_mgmt_task {
+	struct iscsi_hdr	hdr;		/* mgmt. PDU */
+	char			hdrext[sizeof(__u32)];	/* Header-Digest */
+	char			*data;		/* mgmt payload */
+	int			xmstate;	/* mgmt xmit progress */
+	int			data_count;	/* counts data to be sent */
+	struct iscsi_buf	headbuf;	/* header buffer */
+	struct iscsi_buf	sendbuf;	/* in progress buffer */
+	int			sent;
+	uint32_t		itt;		/* this ITT */
+};
+
+struct iscsi_r2t_info {
+	__be32			ttt;		/* copied from R2T */
+	__be32			exp_statsn;	/* copied from R2T */
+	uint32_t		data_length;	/* copied from R2T */
+	uint32_t		data_offset;	/* copied from R2T */
+	struct iscsi_buf	headbuf;	/* Data-Out Header Buffer */
+	struct iscsi_buf	sendbuf;	/* Data-Out in progress buffer*/
+	int			sent;		/* R2T sequence progress */
+	int			data_count;	/* DATA-Out payload progress */
+	struct scatterlist	*sg;		/* per-R2T SG list */
+	int			solicit_datasn;
+	struct iscsi_data_task   *dtask;        /* which data task */
+};
+
+struct iscsi_cmd_task {
+	struct iscsi_cmd	hdr;			/* iSCSI PDU header */
+	char			hdrext[4*sizeof(__u16)+	/* AHS */
+				    sizeof(__u32)];	/* HeaderDigest */
+	char			pad[ISCSI_PAD_LEN];
+	int			itt;			/* this ITT */
+	int			datasn;			/* DataSN */
+	struct iscsi_buf	headbuf;		/* header buf (xmit) */
+	struct iscsi_buf	sendbuf;		/* in progress buffer*/
+	int			sent;
+	struct scatterlist	*sg;			/* per-cmd SG list  */
+	struct scatterlist	*bad_sg;		/* assert statement */
+	int			sg_count;		/* SG's to process  */
+	uint32_t		unsol_datasn;
+	uint32_t		exp_r2tsn;
+	int			xmstate;		/* xmit xtate machine */
+	int			imm_count;		/* imm-data (bytes)   */
+	int			unsol_count;		/* unsolicited (bytes)*/
+	int			r2t_data_count;		/* R2T Data-Out bytes */
+	int			data_count;		/* remaining Data-Out */
+	int			pad_count;		/* padded bytes */
+	struct scsi_cmnd	*sc;			/* associated SCSI cmd*/
+	int			total_length;
+	int			data_offset;
+	struct iscsi_conn	*conn;			/* used connection    */
+	struct iscsi_mgmt_task	*mtask;			/* tmf mtask in progr */
+
+	struct iscsi_r2t_info	*r2t;			/* in progress R2T    */
+	struct iscsi_queue	r2tpool;
+	struct kfifo		*r2tqueue;
+	struct iscsi_r2t_info	**r2ts;
+	struct list_head	dataqueue;		/* Data-Out dataqueue */
+	mempool_t		*datapool;
+	uint32_t		datadigest;		/* for recover digest */
+	int			digest_count;
+	uint32_t		immdigest;		/* for imm data */
+	struct iscsi_buf	immbuf;			/* for imm data digest */
+	struct iscsi_data_task   *dtask;		/* data task in progress*/
+	int			digest_offset;		/* for partial buff digest */
+};
+
+#endif /* ISCSI_H */

drivers/scsi/ncr53c8xx.c

@@ -3481,8 +3481,8 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
 	**----------------------------------------------------
 	*/
 	if (np->settle_time && cmd->timeout_per_command >= HZ) {
-		u_long tlimit = ktime_get(cmd->timeout_per_command - HZ);
-		if (ktime_dif(np->settle_time, tlimit) > 0)
+		u_long tlimit = jiffies + cmd->timeout_per_command - HZ;
+		if (time_after(np->settle_time, tlimit))
 			np->settle_time = tlimit;
 	}
 
@@ -3516,7 +3516,7 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
 		**	Force ordered tag if necessary to avoid timeouts 
 		**	and to preserve interactivity.
 		*/
-		if (lp && ktime_exp(lp->tags_stime)) {
+		if (lp && time_after(jiffies, lp->tags_stime)) {
 			if (lp->tags_smap) {
 				order = M_ORDERED_TAG;
 				if ((DEBUG_FLAGS & DEBUG_TAGS)||bootverbose>2){ 
@@ -3524,7 +3524,7 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
 						"ordered tag forced.\n");
 				}
 			}
-			lp->tags_stime = ktime_get(3*HZ);
+			lp->tags_stime = jiffies + 3*HZ;
 			lp->tags_smap = lp->tags_umap;
 		}
 
@@ -3792,7 +3792,7 @@ static int ncr_reset_scsi_bus(struct ncb *np, int enab_int, int settle_delay)
 	u32 term;
 	int retv = 0;
 
-	np->settle_time	= ktime_get(settle_delay * HZ);
+	np->settle_time	= jiffies + settle_delay * HZ;
 
 	if (bootverbose > 1)
 		printk("%s: resetting, "
@@ -5044,7 +5044,7 @@ static void ncr_setup_tags (struct ncb *np, struct scsi_device *sdev)
 
 static void ncr_timeout (struct ncb *np)
 {
-	u_long	thistime = ktime_get(0);
+	u_long	thistime = jiffies;
 
 	/*
 	**	If release process in progress, let's go
@@ -5057,7 +5057,7 @@ static void ncr_timeout (struct ncb *np)
 		return;
 	}
 
-	np->timer.expires = ktime_get(SCSI_NCR_TIMER_INTERVAL);
+	np->timer.expires = jiffies + SCSI_NCR_TIMER_INTERVAL;
 	add_timer(&np->timer);
 
 	/*
@@ -5336,8 +5336,8 @@ void ncr_exception (struct ncb *np)
 	**=========================================================
 	*/
 
-	if (ktime_exp(np->regtime)) {
-		np->regtime = ktime_get(10*HZ);
+	if (time_after(jiffies, np->regtime)) {
+		np->regtime = jiffies + 10*HZ;
 		for (i = 0; i<sizeof(np->regdump); i++)
 			((char*)&np->regdump)[i] = INB_OFF(i);
 		np->regdump.nc_dstat = dstat;
@@ -5453,7 +5453,7 @@ static int ncr_int_sbmc (struct ncb *np)
 		**	Suspend command processing for 1 second and 
 		**	reinitialize all except the chip.
 		*/
-		np->settle_time	= ktime_get(1*HZ);
+		np->settle_time	= jiffies + HZ;
 		ncr_init (np, 0, bootverbose ? "scsi mode change" : NULL, HS_RESET);
 		return 1;
 	}
@@ -6923,7 +6923,7 @@ static struct lcb *ncr_setup_lcb (struct ncb *np, struct scsi_device *sdev)
 		for (i = 0 ; i < MAX_TAGS ; i++)
 			lp->cb_tags[i] = i;
 		lp->maxnxs = MAX_TAGS;
-		lp->tags_stime = ktime_get(3*HZ);
+		lp->tags_stime = jiffies + 3*HZ;
 		ncr_setup_tags (np, sdev);
 	}
 

drivers/scsi/sym53c8xx_defs.h

@@ -280,19 +280,6 @@
 #define SCSI_NCR_MAX_LUN	(1)
 #endif
 
-/*
-**	These simple macros limit expression involving 
-**	kernel time values (jiffies) to some that have 
-**	chance not to be too much incorrect. :-)
-*/
-#define ktime_get(o)		(jiffies + (u_long) o)
-#define ktime_exp(b)		((long)(jiffies) - (long)(b) >= 0)
-#define ktime_dif(a, b)		((long)(a) - (long)(b))
-/* These ones are not used in this driver */
-#define ktime_add(a, o)		((a) + (u_long)(o))
-#define ktime_sub(a, o)		((a) - (u_long)(o))
-
-
 /*
  *  IO functions definition for big/little endian CPU support.
  *  For now, the NCR is only supported in little endian addressing mode, 

drivers/scsi/tmscsim.c

@@ -988,7 +988,15 @@ din_1:
 
 	    if( residual )
 	    {
+		static int feedback_requested;
 		bval = DC390_read8 (ScsiFifo);	    /* get one residual byte */
+
+		if (!feedback_requested) {
+			feedback_requested = 1;
+			printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
+			       "to help improve support for your system.\n", __FILE__);
+		}
+
 		ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
 		*ptr = bval;
 		pSRB->SGBusAddr++; xferCnt++;

include/scsi/iscsi_if.h

+/*
+ * iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
+ *
+ * Copyright (C) 2005 Dmitry Yusupov
+ * Copyright (C) 2005 Alex Aizman
+ * maintained by open-iscsi@googlegroups.com
+ *
+ * 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.
+ *
+ * See the file COPYING included with this distribution for more details.
+ */
+
+#ifndef ISCSI_IF_H
+#define ISCSI_IF_H
+
+#include <scsi/iscsi_proto.h>
+
+#define UEVENT_BASE			10
+#define KEVENT_BASE			100
+#define ISCSI_ERR_BASE			1000
+
+enum iscsi_uevent_e {
+	ISCSI_UEVENT_UNKNOWN		= 0,
+
+	/* down events */
+	ISCSI_UEVENT_CREATE_SESSION	= UEVENT_BASE + 1,
+	ISCSI_UEVENT_DESTROY_SESSION	= UEVENT_BASE + 2,
+	ISCSI_UEVENT_CREATE_CONN	= UEVENT_BASE + 3,
+	ISCSI_UEVENT_DESTROY_CONN	= UEVENT_BASE + 4,
+	ISCSI_UEVENT_BIND_CONN		= UEVENT_BASE + 5,
+	ISCSI_UEVENT_SET_PARAM		= UEVENT_BASE + 6,
+	ISCSI_UEVENT_START_CONN		= UEVENT_BASE + 7,
+	ISCSI_UEVENT_STOP_CONN		= UEVENT_BASE + 8,
+	ISCSI_UEVENT_SEND_PDU		= UEVENT_BASE + 9,
+	ISCSI_UEVENT_GET_STATS		= UEVENT_BASE + 10,
+	ISCSI_UEVENT_GET_PARAM		= UEVENT_BASE + 11,
+
+	/* up events */
+	ISCSI_KEVENT_RECV_PDU		= KEVENT_BASE + 1,
+	ISCSI_KEVENT_CONN_ERROR		= KEVENT_BASE + 2,
+	ISCSI_KEVENT_IF_ERROR		= KEVENT_BASE + 3,
+};
+
+struct iscsi_uevent {
+	uint32_t type; /* k/u events type */
+	uint32_t iferror; /* carries interface or resource errors */
+	uint64_t transport_handle;
+
+	union {
+		/* messages u -> k */
+		struct msg_create_session {
+			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;
+		} c_conn;
+		struct msg_bind_conn {
+			uint64_t	session_handle;
+			uint64_t	conn_handle;
+			uint32_t	transport_fd;
+			uint32_t	is_leading;
+		} b_conn;
+		struct msg_destroy_conn {
+			uint64_t	conn_handle;
+			uint32_t	cid;
+		} d_conn;
+		struct msg_send_pdu {
+			uint32_t	hdr_size;
+			uint32_t	data_size;
+			uint64_t	conn_handle;
+		} send_pdu;
+		struct msg_set_param {
+			uint64_t	conn_handle;
+			uint32_t	param; /* enum iscsi_param */
+			uint32_t	value;
+		} set_param;
+		struct msg_start_conn {
+			uint64_t	conn_handle;
+		} start_conn;
+		struct msg_stop_conn {
+			uint64_t	conn_handle;
+			uint32_t	flag;
+		} stop_conn;
+		struct msg_get_stats {
+			uint64_t	conn_handle;
+		} get_stats;
+	} u;
+	union {
+		/* messages k -> u */
+		uint64_t		handle;
+		int			retcode;
+		struct msg_create_session_ret {
+			uint64_t	session_handle;
+			uint32_t	sid;
+		} c_session_ret;
+		struct msg_recv_req {
+			uint64_t	recv_handle;
+			uint64_t	conn_handle;
+		} recv_req;
+		struct msg_conn_error {
+			uint64_t	conn_handle;
+			uint32_t	error; /* enum iscsi_err */
+		} connerror;
+	} r;
+} __attribute__ ((aligned (sizeof(uint64_t))));
+
+/*
+ * Common error codes
+ */
+enum iscsi_err {
+	ISCSI_OK			= 0,
+
+	ISCSI_ERR_DATASN		= ISCSI_ERR_BASE + 1,
+	ISCSI_ERR_DATA_OFFSET		= ISCSI_ERR_BASE + 2,
+	ISCSI_ERR_MAX_CMDSN		= ISCSI_ERR_BASE + 3,
+	ISCSI_ERR_EXP_CMDSN		= ISCSI_ERR_BASE + 4,
+	ISCSI_ERR_BAD_OPCODE		= ISCSI_ERR_BASE + 5,
+	ISCSI_ERR_DATALEN		= ISCSI_ERR_BASE + 6,
+	ISCSI_ERR_AHSLEN		= ISCSI_ERR_BASE + 7,
+	ISCSI_ERR_PROTO			= ISCSI_ERR_BASE + 8,
+	ISCSI_ERR_LUN			= ISCSI_ERR_BASE + 9,
+	ISCSI_ERR_BAD_ITT		= ISCSI_ERR_BASE + 10,
+	ISCSI_ERR_CONN_FAILED		= ISCSI_ERR_BASE + 11,
+	ISCSI_ERR_R2TSN			= ISCSI_ERR_BASE + 12,
+	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 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,
+};
+#define ISCSI_PARAM_MAX			14
+
+typedef uint64_t iscsi_sessionh_t;	/* iSCSI Data-Path session handle */
+typedef uint64_t iscsi_connh_t;		/* iSCSI Data-Path connection handle */
+
+#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
+#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
+#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
+
+/*
+ * These flags presents iSCSI Data-Path capabilities.
+ */
+#define CAP_RECOVERY_L0		0x1
+#define CAP_RECOVERY_L1		0x2
+#define CAP_RECOVERY_L2		0x4
+#define CAP_MULTI_R2T		0x8
+#define CAP_HDRDGST		0x10
+#define CAP_DATADGST		0x20
+#define CAP_MULTI_CONN		0x40
+#define CAP_TEXT_NEGO		0x80
+#define CAP_MARKERS		0x100
+
+/*
+ * These flags describes reason of stop_conn() call
+ */
+#define STOP_CONN_TERM		0x1
+#define STOP_CONN_SUSPEND	0x2
+#define STOP_CONN_RECOVER	0x3
+
+#define ISCSI_STATS_CUSTOM_MAX		32
+#define ISCSI_STATS_CUSTOM_DESC_MAX	64
+struct iscsi_stats_custom {
+	char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
+	uint64_t value;
+};
+
+/*
+ * struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
+ *
+ * Note: this structure contains counters collected on per-connection basis.
+ */
+struct iscsi_stats {
+	/* octets */
+	uint64_t txdata_octets;
+	uint64_t rxdata_octets;
+
+	/* xmit pdus */
+	uint32_t noptx_pdus;
+	uint32_t scsicmd_pdus;
+	uint32_t tmfcmd_pdus;
+	uint32_t login_pdus;
+	uint32_t text_pdus;
+	uint32_t dataout_pdus;
+	uint32_t logout_pdus;
+	uint32_t snack_pdus;
+
+	/* recv pdus */
+	uint32_t noprx_pdus;
+	uint32_t scsirsp_pdus;
+	uint32_t tmfrsp_pdus;
+	uint32_t textrsp_pdus;
+	uint32_t datain_pdus;
+	uint32_t logoutrsp_pdus;
+	uint32_t r2t_pdus;
+	uint32_t async_pdus;
+	uint32_t rjt_pdus;
+
+	/* errors */
+	uint32_t digest_err;
+	uint32_t timeout_err;
+
+	/*
+	 * iSCSI Custom Statistics support, i.e. Transport could
+	 * extend existing MIB statistics with its own specific statistics
+	 * up to ISCSI_STATS_CUSTOM_MAX
+	 */
+	uint32_t custom_length;
+	struct iscsi_stats_custom custom[0]
+		__attribute__ ((aligned (sizeof(uint64_t))));
+};
+
+#endif

include/scsi/scsi_transport_iscsi.h

-/* 
+/*
  * iSCSI transport class definitions
  *
  * Copyright (C) IBM Corporation, 2004
- * Copyright (C) Mike Christie, 2004
+ * Copyright (C) Mike Christie, 2004 - 2005
+ * Copyright (C) Dmitry Yusupov, 2004 - 2005
+ * Copyright (C) Alex Aizman, 2004 - 2005
  *
  * 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
@@ -21,158 +23,64 @@
 #ifndef SCSI_TRANSPORT_ISCSI_H
 #define SCSI_TRANSPORT_ISCSI_H
 
-#include <linux/config.h>
-#include <linux/in6.h>
-#include <linux/in.h>
-
-struct scsi_transport_template;
+#include <scsi/iscsi_if.h>
 
-struct iscsi_class_session {
-	uint8_t isid[6];
-	uint16_t tsih;
-	int header_digest;		/* 1 CRC32, 0 None */
-	int data_digest;		/* 1 CRC32, 0 None */
-	uint16_t tpgt;
-	union {
-		struct in6_addr sin6_addr;
-		struct in_addr sin_addr;
-	} u;
-	sa_family_t addr_type;		/* must be AF_INET or AF_INET6 */
-	uint16_t port;			/* must be in network byte order */
-	int initial_r2t;		/* 1 Yes, 0 No */
-	int immediate_data;		/* 1 Yes, 0 No */
-	uint32_t max_recv_data_segment_len;
-	uint32_t max_burst_len;
-	uint32_t first_burst_len;
-	uint16_t def_time2wait;
-	uint16_t def_time2retain;
-	uint16_t max_outstanding_r2t;
-	int data_pdu_in_order;		/* 1 Yes, 0 No */
-	int data_sequence_in_order;	/* 1 Yes, 0 No */
-	int erl;
+/**
+ * struct iscsi_transport - iSCSI Transport template
+ *
+ * @name:		transport name
+ * @caps:		iSCSI Data-Path capabilities
+ * @create_session:	create new iSCSI session object
+ * @destroy_session:	destroy existing iSCSI session object
+ * @create_conn:	create new iSCSI connection
+ * @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
+ * @start_conn:		set connection to be operational
+ * @stop_conn:		suspend/recover/terminate connection
+ * @send_pdu:		send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text.
+ *
+ * Template API provided by iSCSI Transport
+ */
+struct iscsi_transport {
+	struct module *owner;
+	char *name;
+	unsigned int caps;
+	struct scsi_host_template *host_template;
+	int hostdata_size;
+	int max_lun;
+	unsigned int max_conn;
+	unsigned int max_cmd_len;
+	iscsi_sessionh_t (*create_session) (uint32_t initial_cmdsn,
+					    struct Scsi_Host *shost);
+	void (*destroy_session) (iscsi_sessionh_t session);
+	iscsi_connh_t (*create_conn) (iscsi_sessionh_t session, uint32_t cid);
+	int (*bind_conn) (iscsi_sessionh_t session, iscsi_connh_t conn,
+			  uint32_t transport_fd, int is_leading);
+	int (*start_conn) (iscsi_connh_t conn);
+	void (*stop_conn) (iscsi_connh_t conn, int flag);
+	void (*destroy_conn) (iscsi_connh_t conn);
+	int (*set_param) (iscsi_connh_t conn, enum iscsi_param param,
+			  uint32_t value);
+	int (*get_param) (iscsi_connh_t conn, enum iscsi_param param,
+			  uint32_t *value);
+	int (*send_pdu) (iscsi_connh_t conn, struct iscsi_hdr *hdr,
+			 char *data, uint32_t data_size);
+	void (*get_stats) (iscsi_connh_t conn, struct iscsi_stats *stats);
 };
 
 /*
- * accessor macros
+ * transport registration upcalls
  */
-#define iscsi_isid(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->isid)
-#define iscsi_tsih(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->tsih)
-#define iscsi_header_digest(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->header_digest)
-#define iscsi_data_digest(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->data_digest)
-#define iscsi_port(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->port)
-#define iscsi_addr_type(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->addr_type)
-#define iscsi_sin_addr(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->u.sin_addr)
-#define iscsi_sin6_addr(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->u.sin6_addr)
-#define iscsi_tpgt(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->tpgt)
-#define iscsi_initial_r2t(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->initial_r2t)
-#define iscsi_immediate_data(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->immediate_data)
-#define iscsi_max_recv_data_segment_len(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->max_recv_data_segment_len)
-#define iscsi_max_burst_len(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->max_burst_len)
-#define iscsi_first_burst_len(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->first_burst_len)
-#define iscsi_def_time2wait(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->def_time2wait)
-#define iscsi_def_time2retain(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->def_time2retain)
-#define iscsi_max_outstanding_r2t(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->max_outstanding_r2t)
-#define iscsi_data_pdu_in_order(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->data_pdu_in_order)
-#define iscsi_data_sequence_in_order(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->data_sequence_in_order)
-#define iscsi_erl(x) \
-	(((struct iscsi_class_session *)&(x)->starget_data)->erl)
+extern int iscsi_register_transport(struct iscsi_transport *tt);
+extern int iscsi_unregister_transport(struct iscsi_transport *tt);
 
 /*
- * The functions by which the transport class and the driver communicate
+ * control plane upcalls
  */
-struct iscsi_function_template {
-	/*
-	 * target attrs
-	 */
-	void (*get_isid)(struct scsi_target *);
-	void (*get_tsih)(struct scsi_target *);
-	void (*get_header_digest)(struct scsi_target *);
-	void (*get_data_digest)(struct scsi_target *);
-	void (*get_port)(struct scsi_target *);
-	void (*get_tpgt)(struct scsi_target *);
-	/*
-	 * In get_ip_address the lld must set the address and
-	 * the address type
-	 */
-	void (*get_ip_address)(struct scsi_target *);
-	/*
-	 * The lld should snprintf the name or alias to the buffer
-	 */
-	ssize_t (*get_target_name)(struct scsi_target *, char *, ssize_t);
-	ssize_t (*get_target_alias)(struct scsi_target *, char *, ssize_t);
-	void (*get_initial_r2t)(struct scsi_target *);
-	void (*get_immediate_data)(struct scsi_target *);
-	void (*get_max_recv_data_segment_len)(struct scsi_target *);
-	void (*get_max_burst_len)(struct scsi_target *);
-	void (*get_first_burst_len)(struct scsi_target *);
-	void (*get_def_time2wait)(struct scsi_target *);
-	void (*get_def_time2retain)(struct scsi_target *);
-	void (*get_max_outstanding_r2t)(struct scsi_target *);
-	void (*get_data_pdu_in_order)(struct scsi_target *);
-	void (*get_data_sequence_in_order)(struct scsi_target *);
-	void (*get_erl)(struct scsi_target *);
-
-	/*
-	 * host atts
-	 */
-
-	/*
-	 * The lld should snprintf the name or alias to the buffer
-	 */
-	ssize_t (*get_initiator_alias)(struct Scsi_Host *, char *, ssize_t);
-	ssize_t (*get_initiator_name)(struct Scsi_Host *, char *, ssize_t);
-	/*
-	 * The driver sets these to tell the transport class it
-	 * wants the attributes displayed in sysfs.  If the show_ flag
-	 * is not set, the attribute will be private to the transport
-	 * class. We could probably just test if a get_ fn was set
-	 * since we only use the values for sysfs but this is how
-	 * fc does it too.
-	 */
-	unsigned long show_isid:1;
-	unsigned long show_tsih:1;
-	unsigned long show_header_digest:1;
-	unsigned long show_data_digest:1;
-	unsigned long show_port:1;
-	unsigned long show_tpgt:1;
-	unsigned long show_ip_address:1;
-	unsigned long show_target_name:1;
-	unsigned long show_target_alias:1;
-	unsigned long show_initial_r2t:1;
-	unsigned long show_immediate_data:1;
-	unsigned long show_max_recv_data_segment_len:1;
-	unsigned long show_max_burst_len:1;
-	unsigned long show_first_burst_len:1;
-	unsigned long show_def_time2wait:1;
-	unsigned long show_def_time2retain:1;
-	unsigned long show_max_outstanding_r2t:1;
-	unsigned long show_data_pdu_in_order:1;
-	unsigned long show_data_sequence_in_order:1;
-	unsigned long show_erl:1;
-	unsigned long show_initiator_name:1;
-	unsigned long show_initiator_alias:1;
-};
-
-struct scsi_transport_template *iscsi_attach_transport(struct iscsi_function_template *);
-void iscsi_release_transport(struct scsi_transport_template *);
+extern void iscsi_conn_error(iscsi_connh_t conn, enum iscsi_err error);
+extern int iscsi_recv_pdu(iscsi_connh_t conn, struct iscsi_hdr *hdr,
+			  char *data, uint32_t data_size);
 
 #endif