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 */