mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 02:39:48 +00:00
Merge HEAD from ../scsi-iscsi-2.6
This commit is contained in:
commit
f5c7f03113
8 changed files with 5981 additions and 404 deletions
|
@ -229,12 +229,35 @@ config SCSI_FC_ATTRS
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|||
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config SCSI_ISCSI_ATTRS
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tristate "iSCSI Transport Attributes"
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depends on SCSI
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depends on SCSI && NET
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help
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If you wish to export transport-specific information about
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each attached iSCSI device to sysfs, say Y.
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Otherwise, say N.
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config ISCSI_TCP
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tristate "iSCSI Initiator over TCP/IP"
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depends on SCSI && INET && SCSI_ISCSI_ATTRS
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select CRYPTO
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select CRYPTO_MD5
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select CRYPTO_CRC32C
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help
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The iSCSI Driver provides a host with the ability to access storage
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through an IP network. The driver uses the iSCSI protocol to transport
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SCSI requests and responses over a TCP/IP network between the host
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(the "initiator") and "targets". Architecturally, the iSCSI driver
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combines with the host's TCP/IP stack, network drivers, and Network
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Interface Card (NIC) to provide the same functions as a SCSI or a
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Fibre Channel (FC) adapter driver with a Host Bus Adapter (HBA).
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To compile this driver as a module, choose M here: the
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module will be called iscsi_tcp.
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The userspace component needed to initialize the driver, documentation,
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and sample configuration files can be found here:
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http://linux-iscsi.sf.net
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endmenu
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menu "SCSI low-level drivers"
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|
|
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@ -32,6 +32,7 @@ obj-$(CONFIG_SCSI_SPI_ATTRS) += scsi_transport_spi.o
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obj-$(CONFIG_SCSI_FC_ATTRS) += scsi_transport_fc.o
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obj-$(CONFIG_SCSI_ISCSI_ATTRS) += scsi_transport_iscsi.o
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obj-$(CONFIG_ISCSI_TCP) += iscsi_tcp.o
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obj-$(CONFIG_SCSI_AMIGA7XX) += amiga7xx.o 53c7xx.o
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obj-$(CONFIG_A3000_SCSI) += a3000.o wd33c93.o
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obj-$(CONFIG_A2091_SCSI) += a2091.o wd33c93.o
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||||
|
|
3627
drivers/scsi/iscsi_tcp.c
Normal file
3627
drivers/scsi/iscsi_tcp.c
Normal file
File diff suppressed because it is too large
Load diff
322
drivers/scsi/iscsi_tcp.h
Normal file
322
drivers/scsi/iscsi_tcp.h
Normal file
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@ -0,0 +1,322 @@
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/*
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* iSCSI Initiator TCP Transport
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* Copyright (C) 2004 Dmitry Yusupov
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* Copyright (C) 2004 Alex Aizman
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* Copyright (C) 2005 Mike Christie
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||||
* maintained by open-iscsi@googlegroups.com
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||||
*
|
||||
* 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.
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||||
*/
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#ifndef ISCSI_TCP_H
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#define ISCSI_TCP_H
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/* Session's states */
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#define ISCSI_STATE_FREE 1
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#define ISCSI_STATE_LOGGED_IN 2
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#define ISCSI_STATE_FAILED 3
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#define ISCSI_STATE_TERMINATE 4
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/* Connection's states */
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#define ISCSI_CONN_INITIAL_STAGE 0
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#define ISCSI_CONN_STARTED 1
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#define ISCSI_CONN_STOPPED 2
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#define ISCSI_CONN_CLEANUP_WAIT 3
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/* Connection suspend "bit" */
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#define SUSPEND_BIT 1
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/* Socket's Receive state machine */
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#define IN_PROGRESS_WAIT_HEADER 0x0
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#define IN_PROGRESS_HEADER_GATHER 0x1
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||||
#define IN_PROGRESS_DATA_RECV 0x2
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#define IN_PROGRESS_DDIGEST_RECV 0x3
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/* Task Mgmt states */
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#define TMABORT_INITIAL 0x0
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#define TMABORT_SUCCESS 0x1
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#define TMABORT_FAILED 0x2
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#define TMABORT_TIMEDOUT 0x3
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/* xmit state machine */
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#define XMSTATE_IDLE 0x0
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#define XMSTATE_R_HDR 0x1
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#define XMSTATE_W_HDR 0x2
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#define XMSTATE_IMM_HDR 0x4
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#define XMSTATE_IMM_DATA 0x8
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#define XMSTATE_UNS_INIT 0x10
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#define XMSTATE_UNS_HDR 0x20
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#define XMSTATE_UNS_DATA 0x40
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#define XMSTATE_SOL_HDR 0x80
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||||
#define XMSTATE_SOL_DATA 0x100
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#define XMSTATE_W_PAD 0x200
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||||
#define XMSTATE_DATA_DIGEST 0x400
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#define ISCSI_CONN_MAX 1
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#define ISCSI_CONN_RCVBUF_MIN 262144
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#define ISCSI_CONN_SNDBUF_MIN 262144
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#define ISCSI_PAD_LEN 4
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#define ISCSI_R2T_MAX 16
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#define ISCSI_XMIT_CMDS_MAX 128 /* must be power of 2 */
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#define ISCSI_MGMT_CMDS_MAX 32 /* must be power of 2 */
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#define ISCSI_MGMT_ITT_OFFSET 0xa00
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#define ISCSI_SG_TABLESIZE SG_ALL
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#define ISCSI_CMD_PER_LUN 128
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#define ISCSI_TCP_MAX_CMD_LEN 16
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#define ITT_MASK (0xfff)
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#define CID_SHIFT 12
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#define CID_MASK (0xffff<<CID_SHIFT)
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#define AGE_SHIFT 28
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#define AGE_MASK (0xf<<AGE_SHIFT)
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struct iscsi_queue {
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struct kfifo *queue; /* FIFO Queue */
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void **pool; /* Pool of elements */
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int max; /* Max number of elements */
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};
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struct iscsi_session;
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struct iscsi_cmd_task;
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struct iscsi_mgmt_task;
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/* Socket connection recieve helper */
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struct iscsi_tcp_recv {
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struct iscsi_hdr *hdr;
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struct sk_buff *skb;
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int offset;
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int len;
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int hdr_offset;
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int copy;
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int copied;
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int padding;
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||||
struct iscsi_cmd_task *ctask; /* current cmd in progress */
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||||
|
||||
/* copied and flipped values */
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int opcode;
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int flags;
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||||
int cmd_status;
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int ahslen;
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int datalen;
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uint32_t itt;
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int datadgst;
|
||||
};
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||||
|
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struct iscsi_conn {
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struct iscsi_hdr hdr; /* header placeholder */
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||||
char hdrext[4*sizeof(__u16) +
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sizeof(__u32)];
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int data_copied;
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char *data; /* data placeholder */
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struct socket *sock; /* TCP socket */
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int data_size; /* actual recv_dlength */
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int stop_stage; /* conn_stop() flag: *
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* stop to recover, *
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* stop to terminate */
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||||
/* iSCSI connection-wide sequencing */
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||||
uint32_t exp_statsn;
|
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int hdr_size; /* PDU header size */
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||||
unsigned long suspend_rx; /* suspend Rx */
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||||
|
||||
struct crypto_tfm *rx_tfm; /* CRC32C (Rx) */
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struct crypto_tfm *data_rx_tfm; /* CRC32C (Rx) for data */
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||||
|
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/* control data */
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||||
int senselen; /* scsi sense length */
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||||
int id; /* CID */
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struct iscsi_tcp_recv in; /* TCP receive context */
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struct iscsi_session *session; /* parent session */
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struct list_head item; /* maintains list of conns */
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int in_progress; /* connection state machine */
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int c_stage; /* connection state */
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||||
struct iscsi_mgmt_task *login_mtask; /* mtask used for login/text */
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struct iscsi_mgmt_task *mtask; /* xmit mtask in progress */
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||||
struct iscsi_cmd_task *ctask; /* xmit ctask in progress */
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||||
spinlock_t lock; /* FIXME: to be removed */
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||||
|
||||
/* old values for socket callbacks */
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||||
void (*old_data_ready)(struct sock *, int);
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void (*old_state_change)(struct sock *);
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void (*old_write_space)(struct sock *);
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|
||||
/* xmit */
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||||
struct crypto_tfm *tx_tfm; /* CRC32C (Tx) */
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||||
struct crypto_tfm *data_tx_tfm; /* CRC32C (Tx) for data */
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||||
struct kfifo *writequeue; /* write cmds for Data-Outs */
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||||
struct kfifo *immqueue; /* immediate xmit queue */
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struct kfifo *mgmtqueue; /* mgmt (control) xmit queue */
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||||
struct kfifo *xmitqueue; /* data-path cmd queue */
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||||
struct work_struct xmitwork; /* per-conn. xmit workqueue */
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struct semaphore xmitsema; /* serializes connection xmit,
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* access to kfifos: *
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* xmitqueue, writequeue, *
|
||||
* immqueue, mgmtqueue */
|
||||
unsigned long suspend_tx; /* suspend Tx */
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|
||||
/* abort */
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wait_queue_head_t ehwait; /* used in eh_abort() */
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struct iscsi_tm tmhdr;
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struct timer_list tmabort_timer; /* abort timer */
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int tmabort_state; /* see TMABORT_INITIAL, etc.*/
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|
||||
/* negotiated params */
|
||||
int max_recv_dlength;
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int max_xmit_dlength;
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int hdrdgst_en;
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int datadgst_en;
|
||||
|
||||
/* MIB-statistics */
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uint64_t txdata_octets;
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uint64_t rxdata_octets;
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uint32_t scsicmd_pdus_cnt;
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uint32_t dataout_pdus_cnt;
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uint32_t scsirsp_pdus_cnt;
|
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uint32_t datain_pdus_cnt;
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uint32_t r2t_pdus_cnt;
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uint32_t tmfcmd_pdus_cnt;
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int32_t tmfrsp_pdus_cnt;
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|
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/* custom statistics */
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uint32_t sendpage_failures_cnt;
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uint32_t discontiguous_hdr_cnt;
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uint32_t eh_abort_cnt;
|
||||
};
|
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|
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struct iscsi_session {
|
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/* iSCSI session-wide sequencing */
|
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uint32_t cmdsn;
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||||
uint32_t exp_cmdsn;
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uint32_t max_cmdsn;
|
||||
|
||||
/* configuration */
|
||||
int initial_r2t_en;
|
||||
int max_r2t;
|
||||
int imm_data_en;
|
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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 */
|
File diff suppressed because it is too large
Load diff
245
include/scsi/iscsi_if.h
Normal file
245
include/scsi/iscsi_if.h
Normal file
|
@ -0,0 +1,245 @@
|
|||
/*
|
||||
* 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
|
566
include/scsi/iscsi_proto.h
Normal file
566
include/scsi/iscsi_proto.h
Normal file
|
@ -0,0 +1,566 @@
|
|||
/*
|
||||
* RFC 3720 (iSCSI) protocol data types
|
||||
*
|
||||
* 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_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 */
|
||||
#define ISCSI_LISTEN_PORT 3260
|
||||
|
||||
/* Padding word length */
|
||||
#define PAD_WORD_LEN 4
|
||||
|
||||
/*
|
||||
* useful common(control and data pathes) macro
|
||||
*/
|
||||
#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))
|
||||
#define hton24(p, v) { \
|
||||
p[0] = (((v) >> 16) & 0xFF); \
|
||||
p[1] = (((v) >> 8) & 0xFF); \
|
||||
p[2] = ((v) & 0xFF); \
|
||||
}
|
||||
#define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;}
|
||||
|
||||
/*
|
||||
* iSCSI Template Message Header
|
||||
*/
|
||||
struct iscsi_hdr {
|
||||
uint8_t opcode;
|
||||
uint8_t flags; /* Final bit */
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength; /* AHSs total length */
|
||||
uint8_t dlength[3]; /* Data length */
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Task Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t other[16];
|
||||
};
|
||||
|
||||
/************************* RFC 3720 Begin *****************************/
|
||||
|
||||
#define ISCSI_RESERVED_TAG 0xffffffff
|
||||
|
||||
/* Opcode encoding bits */
|
||||
#define ISCSI_OP_RETRY 0x80
|
||||
#define ISCSI_OP_IMMEDIATE 0x40
|
||||
#define ISCSI_OPCODE_MASK 0x3F
|
||||
|
||||
/* Initiator Opcode values */
|
||||
#define ISCSI_OP_NOOP_OUT 0x00
|
||||
#define ISCSI_OP_SCSI_CMD 0x01
|
||||
#define ISCSI_OP_SCSI_TMFUNC 0x02
|
||||
#define ISCSI_OP_LOGIN 0x03
|
||||
#define ISCSI_OP_TEXT 0x04
|
||||
#define ISCSI_OP_SCSI_DATA_OUT 0x05
|
||||
#define ISCSI_OP_LOGOUT 0x06
|
||||
#define ISCSI_OP_SNACK 0x10
|
||||
|
||||
/* Target Opcode values */
|
||||
#define ISCSI_OP_NOOP_IN 0x20
|
||||
#define ISCSI_OP_SCSI_CMD_RSP 0x21
|
||||
#define ISCSI_OP_SCSI_TMFUNC_RSP 0x22
|
||||
#define ISCSI_OP_LOGIN_RSP 0x23
|
||||
#define ISCSI_OP_TEXT_RSP 0x24
|
||||
#define ISCSI_OP_SCSI_DATA_IN 0x25
|
||||
#define ISCSI_OP_LOGOUT_RSP 0x26
|
||||
#define ISCSI_OP_R2T 0x31
|
||||
#define ISCSI_OP_ASYNC_EVENT 0x32
|
||||
#define ISCSI_OP_REJECT 0x3f
|
||||
|
||||
/* iSCSI PDU Header */
|
||||
struct iscsi_cmd {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2;
|
||||
uint8_t cmdrn;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 data_length;
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t cdb[16]; /* SCSI Command Block */
|
||||
/* Additional Data (Command Dependent) */
|
||||
};
|
||||
|
||||
/* Command PDU flags */
|
||||
#define ISCSI_FLAG_CMD_FINAL 0x80
|
||||
#define ISCSI_FLAG_CMD_READ 0x40
|
||||
#define ISCSI_FLAG_CMD_WRITE 0x20
|
||||
#define ISCSI_FLAG_CMD_ATTR_MASK 0x07 /* 3 bits */
|
||||
|
||||
/* SCSI Command Attribute values */
|
||||
#define ISCSI_ATTR_UNTAGGED 0
|
||||
#define ISCSI_ATTR_SIMPLE 1
|
||||
#define ISCSI_ATTR_ORDERED 2
|
||||
#define ISCSI_ATTR_HEAD_OF_QUEUE 3
|
||||
#define ISCSI_ATTR_ACA 4
|
||||
|
||||
/* SCSI Response Header */
|
||||
struct iscsi_cmd_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t response;
|
||||
uint8_t cmd_status;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rsvd1;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 exp_datasn;
|
||||
__be32 bi_residual_count;
|
||||
__be32 residual_count;
|
||||
/* Response or Sense Data (optional) */
|
||||
};
|
||||
|
||||
/* Command Response PDU flags */
|
||||
#define ISCSI_FLAG_CMD_BIDI_OVERFLOW 0x10
|
||||
#define ISCSI_FLAG_CMD_BIDI_UNDERFLOW 0x08
|
||||
#define ISCSI_FLAG_CMD_OVERFLOW 0x04
|
||||
#define ISCSI_FLAG_CMD_UNDERFLOW 0x02
|
||||
|
||||
/* iSCSI Status values. Valid if Rsp Selector bit is not set */
|
||||
#define ISCSI_STATUS_CMD_COMPLETED 0
|
||||
#define ISCSI_STATUS_TARGET_FAILURE 1
|
||||
#define ISCSI_STATUS_SUBSYS_FAILURE 2
|
||||
|
||||
/* Asynchronous Event Header */
|
||||
struct iscsi_async {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
uint8_t rsvd4[8];
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t async_event;
|
||||
uint8_t async_vcode;
|
||||
__be16 param1;
|
||||
__be16 param2;
|
||||
__be16 param3;
|
||||
uint8_t rsvd5[4];
|
||||
};
|
||||
|
||||
/* iSCSI Event Codes */
|
||||
#define ISCSI_ASYNC_MSG_SCSI_EVENT 0
|
||||
#define ISCSI_ASYNC_MSG_REQUEST_LOGOUT 1
|
||||
#define ISCSI_ASYNC_MSG_DROPPING_CONNECTION 2
|
||||
#define ISCSI_ASYNC_MSG_DROPPING_ALL_CONNECTIONS 3
|
||||
#define ISCSI_ASYNC_MSG_PARAM_NEGOTIATION 4
|
||||
#define ISCSI_ASYNC_MSG_VENDOR_SPECIFIC 255
|
||||
|
||||
/* NOP-Out Message */
|
||||
struct iscsi_nopout {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
__be16 rsvd2;
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd4[16];
|
||||
};
|
||||
|
||||
/* NOP-In Message */
|
||||
struct iscsi_nopin {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
__be16 rsvd2;
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd4[12];
|
||||
};
|
||||
|
||||
/* SCSI Task Management Message Header */
|
||||
struct iscsi_tm {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd1[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rtt; /* Reference Task Tag */
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
__be32 refcmdsn;
|
||||
__be32 exp_datasn;
|
||||
uint8_t rsvd2[8];
|
||||
};
|
||||
|
||||
#define ISCSI_FLAG_TASK_MGMT_FUNCTION_MASK 0x7F
|
||||
|
||||
/* Function values */
|
||||
#define ISCSI_TM_FUNC_ABORT_TASK 1
|
||||
#define ISCSI_TM_FUNC_ABORT_TASK_SET 2
|
||||
#define ISCSI_TM_FUNC_CLEAR_ACA 3
|
||||
#define ISCSI_TM_FUNC_CLEAR_TASK_SET 4
|
||||
#define ISCSI_TM_FUNC_LOGICAL_UNIT_RESET 5
|
||||
#define ISCSI_TM_FUNC_TARGET_WARM_RESET 6
|
||||
#define ISCSI_TM_FUNC_TARGET_COLD_RESET 7
|
||||
#define ISCSI_TM_FUNC_TASK_REASSIGN 8
|
||||
|
||||
/* SCSI Task Management Response Header */
|
||||
struct iscsi_tm_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t response; /* see Response values below */
|
||||
uint8_t qualifier;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd2[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rtt; /* Reference Task Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd3[12];
|
||||
};
|
||||
|
||||
/* Response values */
|
||||
#define SCSI_TCP_TM_RESP_COMPLETE 0x00
|
||||
#define SCSI_TCP_TM_RESP_NO_TASK 0x01
|
||||
#define SCSI_TCP_TM_RESP_NO_LUN 0x02
|
||||
#define SCSI_TCP_TM_RESP_TASK_ALLEGIANT 0x03
|
||||
#define SCSI_TCP_TM_RESP_NO_FAILOVER 0x04
|
||||
#define SCSI_TCP_TM_RESP_NOT_SUPPORTED 0x05
|
||||
#define SCSI_TCP_TM_RESP_AUTH_FAILED 0x06
|
||||
#define SCSI_TCP_TM_RESP_REJECTED 0xff
|
||||
|
||||
/* Ready To Transfer Header */
|
||||
struct iscsi_r2t_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 r2tsn;
|
||||
__be32 data_offset;
|
||||
__be32 data_length;
|
||||
};
|
||||
|
||||
/* SCSI Data Hdr */
|
||||
struct iscsi_data {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 rsvd4;
|
||||
__be32 exp_statsn;
|
||||
__be32 rsvd5;
|
||||
__be32 datasn;
|
||||
__be32 offset;
|
||||
__be32 rsvd6;
|
||||
/* Payload */
|
||||
};
|
||||
|
||||
/* SCSI Data Response Hdr */
|
||||
struct iscsi_data_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2;
|
||||
uint8_t cmd_status;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 datasn;
|
||||
__be32 offset;
|
||||
__be32 residual_count;
|
||||
};
|
||||
|
||||
/* Data Response PDU flags */
|
||||
#define ISCSI_FLAG_DATA_ACK 0x40
|
||||
#define ISCSI_FLAG_DATA_OVERFLOW 0x04
|
||||
#define ISCSI_FLAG_DATA_UNDERFLOW 0x02
|
||||
#define ISCSI_FLAG_DATA_STATUS 0x01
|
||||
|
||||
/* Text Header */
|
||||
struct iscsi_text {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd4[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd5[16];
|
||||
/* Text - key=value pairs */
|
||||
};
|
||||
|
||||
#define ISCSI_FLAG_TEXT_CONTINUE 0x40
|
||||
|
||||
/* Text Response Header */
|
||||
struct iscsi_text_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd4[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd5[12];
|
||||
/* Text Response - key:value pairs */
|
||||
};
|
||||
|
||||
/* Login Header */
|
||||
struct iscsi_login {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t max_version; /* Max. version supported */
|
||||
uint8_t min_version; /* Min. version supported */
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t isid[6]; /* Initiator Session ID */
|
||||
__be16 tsih; /* Target Session Handle */
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be16 cid;
|
||||
__be16 rsvd3;
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd5[16];
|
||||
};
|
||||
|
||||
/* Login PDU flags */
|
||||
#define ISCSI_FLAG_LOGIN_TRANSIT 0x80
|
||||
#define ISCSI_FLAG_LOGIN_CONTINUE 0x40
|
||||
#define ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK 0x0C /* 2 bits */
|
||||
#define ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK 0x03 /* 2 bits */
|
||||
|
||||
#define ISCSI_LOGIN_CURRENT_STAGE(flags) \
|
||||
((flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2)
|
||||
#define ISCSI_LOGIN_NEXT_STAGE(flags) \
|
||||
(flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK)
|
||||
|
||||
/* Login Response Header */
|
||||
struct iscsi_login_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t max_version; /* Max. version supported */
|
||||
uint8_t active_version; /* Active version */
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t isid[6]; /* Initiator Session ID */
|
||||
__be16 tsih; /* Target Session Handle */
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rsvd3;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t status_class; /* see Login RSP ststus classes below */
|
||||
uint8_t status_detail; /* see Login RSP Status details below */
|
||||
uint8_t rsvd4[10];
|
||||
};
|
||||
|
||||
/* Login stage (phase) codes for CSG, NSG */
|
||||
#define ISCSI_INITIAL_LOGIN_STAGE -1
|
||||
#define ISCSI_SECURITY_NEGOTIATION_STAGE 0
|
||||
#define ISCSI_OP_PARMS_NEGOTIATION_STAGE 1
|
||||
#define ISCSI_FULL_FEATURE_PHASE 3
|
||||
|
||||
/* Login Status response classes */
|
||||
#define ISCSI_STATUS_CLS_SUCCESS 0x00
|
||||
#define ISCSI_STATUS_CLS_REDIRECT 0x01
|
||||
#define ISCSI_STATUS_CLS_INITIATOR_ERR 0x02
|
||||
#define ISCSI_STATUS_CLS_TARGET_ERR 0x03
|
||||
|
||||
/* Login Status response detail codes */
|
||||
/* Class-0 (Success) */
|
||||
#define ISCSI_LOGIN_STATUS_ACCEPT 0x00
|
||||
|
||||
/* Class-1 (Redirection) */
|
||||
#define ISCSI_LOGIN_STATUS_TGT_MOVED_TEMP 0x01
|
||||
#define ISCSI_LOGIN_STATUS_TGT_MOVED_PERM 0x02
|
||||
|
||||
/* Class-2 (Initiator Error) */
|
||||
#define ISCSI_LOGIN_STATUS_INIT_ERR 0x00
|
||||
#define ISCSI_LOGIN_STATUS_AUTH_FAILED 0x01
|
||||
#define ISCSI_LOGIN_STATUS_TGT_FORBIDDEN 0x02
|
||||
#define ISCSI_LOGIN_STATUS_TGT_NOT_FOUND 0x03
|
||||
#define ISCSI_LOGIN_STATUS_TGT_REMOVED 0x04
|
||||
#define ISCSI_LOGIN_STATUS_NO_VERSION 0x05
|
||||
#define ISCSI_LOGIN_STATUS_ISID_ERROR 0x06
|
||||
#define ISCSI_LOGIN_STATUS_MISSING_FIELDS 0x07
|
||||
#define ISCSI_LOGIN_STATUS_CONN_ADD_FAILED 0x08
|
||||
#define ISCSI_LOGIN_STATUS_NO_SESSION_TYPE 0x09
|
||||
#define ISCSI_LOGIN_STATUS_NO_SESSION 0x0a
|
||||
#define ISCSI_LOGIN_STATUS_INVALID_REQUEST 0x0b
|
||||
|
||||
/* Class-3 (Target Error) */
|
||||
#define ISCSI_LOGIN_STATUS_TARGET_ERROR 0x00
|
||||
#define ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE 0x01
|
||||
#define ISCSI_LOGIN_STATUS_NO_RESOURCES 0x02
|
||||
|
||||
/* Logout Header */
|
||||
struct iscsi_logout {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd1[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd2[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be16 cid;
|
||||
uint8_t rsvd3[2];
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd4[16];
|
||||
};
|
||||
|
||||
/* Logout PDU flags */
|
||||
#define ISCSI_FLAG_LOGOUT_REASON_MASK 0x7F
|
||||
|
||||
/* logout reason_code values */
|
||||
|
||||
#define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0
|
||||
#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1
|
||||
#define ISCSI_LOGOUT_REASON_RECOVERY 2
|
||||
#define ISCSI_LOGOUT_REASON_AEN_REQUEST 3
|
||||
|
||||
/* Logout Response Header */
|
||||
struct iscsi_logout_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t response; /* see Logout response values below */
|
||||
uint8_t rsvd2;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd3[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rsvd4;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 rsvd5;
|
||||
__be16 t2wait;
|
||||
__be16 t2retain;
|
||||
__be32 rsvd6;
|
||||
};
|
||||
|
||||
/* logout response status values */
|
||||
|
||||
#define ISCSI_LOGOUT_SUCCESS 0
|
||||
#define ISCSI_LOGOUT_CID_NOT_FOUND 1
|
||||
#define ISCSI_LOGOUT_RECOVERY_UNSUPPORTED 2
|
||||
#define ISCSI_LOGOUT_CLEANUP_FAILED 3
|
||||
|
||||
/* SNACK Header */
|
||||
struct iscsi_snack {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[14];
|
||||
__be32 itt;
|
||||
__be32 begrun;
|
||||
__be32 runlength;
|
||||
__be32 exp_statsn;
|
||||
__be32 rsvd3;
|
||||
__be32 exp_datasn;
|
||||
uint8_t rsvd6[8];
|
||||
};
|
||||
|
||||
/* SNACK PDU flags */
|
||||
#define ISCSI_FLAG_SNACK_TYPE_MASK 0x0F /* 4 bits */
|
||||
|
||||
/* Reject Message Header */
|
||||
struct iscsi_reject {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t reason;
|
||||
uint8_t rsvd2;
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd4[16];
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 datasn;
|
||||
uint8_t rsvd5[8];
|
||||
/* Text - Rejected hdr */
|
||||
};
|
||||
|
||||
/* Reason for Reject */
|
||||
#define CMD_BEFORE_LOGIN 1
|
||||
#define DATA_DIGEST_ERROR 2
|
||||
#define DATA_SNACK_REJECT 3
|
||||
#define ISCSI_PROTOCOL_ERROR 4
|
||||
#define CMD_NOT_SUPPORTED 5
|
||||
#define IMM_CMD_REJECT 6
|
||||
#define TASK_IN_PROGRESS 7
|
||||
#define INVALID_SNACK 8
|
||||
#define BOOKMARK_REJECTED 9
|
||||
#define BOOKMARK_NO_RESOURCES 10
|
||||
#define NEGOTIATION_RESET 11
|
||||
|
||||
/* Max. number of Key=Value pairs in a text message */
|
||||
#define MAX_KEY_VALUE_PAIRS 8192
|
||||
|
||||
/* maximum length for text keys/values */
|
||||
#define KEY_MAXLEN 64
|
||||
#define VALUE_MAXLEN 255
|
||||
#define TARGET_NAME_MAXLEN VALUE_MAXLEN
|
||||
|
||||
#define DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH 8192
|
||||
|
||||
/************************* RFC 3720 End *****************************/
|
||||
|
||||
#endif /* ISCSI_PROTO_H */
|
|
@ -2,7 +2,9 @@
|
|||
* 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>
|
||||
#include <scsi/iscsi_if.h>
|
||||
|
||||
struct scsi_transport_template;
|
||||
|
||||
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
|
||||
|
|
Loading…
Reference in a new issue