#include <linux/types.h>
#include <linux/net.h>
#include <scsi/libiscsi.h>
#include <scsi/scsi_transport_iscsi.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
#include <linux/sched.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <linux/mutex.h>
#include <linux/mempool.h>
#include <linux/uio.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_fmr_pool.h>
#include <rdma/rdma_cm.h>

Data Structures
struct	iser_hdr

struct	iser_data_buf

struct	iser_mem_reg

struct	iser_regd_buf

struct	iser_tx_desc

struct	iser_rx_desc

struct	iser_device

struct	iser_conn

struct	iscsi_iser_conn

struct	iscsi_iser_task

struct	iser_page_vec

struct	iser_cq_desc

struct	iser_global

Macros
#define	DRV_NAME "iser"

#define	PFX DRV_NAME ": "

#define	DRV_VER "0.1"

#define	DRV_DATE "May 7th, 2006"

#define	iser_dbg(fmt, arg...)

#define	iser_warn(fmt, arg...)

#define	iser_err(fmt, arg...)

#define	SHIFT_4K 12

#define	SIZE_4K (1ULL << SHIFT_4K)

#define	MASK_4K (~(SIZE_4K-1))

#define	ISCSI_ISER_SG_TABLESIZE (0x80000 >> SHIFT_4K)

#define	ISER_DEF_CMD_PER_LUN 128

#define	ISER_MAX_RX_MISC_PDUS 4 /* NOOP_IN(2) , ASYNC_EVENT(2) */

#define	ISER_MAX_TX_MISC_PDUS

#define	ISER_QP_MAX_RECV_DTOS (ISCSI_DEF_XMIT_CMDS_MAX)

#define	ISER_MIN_POSTED_RX (ISCSI_DEF_XMIT_CMDS_MAX >> 2)

#define	ISER_INFLIGHT_DATAOUTS 8

#define	ISER_QP_MAX_REQ_DTOS

#define	ISER_VER 0x10

#define	ISER_WSV 0x08

#define	ISER_RSV 0x04

#define	ISER_HEADERS_LEN (sizeof(struct iser_hdr) + sizeof(struct iscsi_hdr))

#define	ISER_RECV_DATA_SEG_LEN 128

#define	ISER_RX_PAYLOAD_SIZE (ISER_HEADERS_LEN + ISER_RECV_DATA_SEG_LEN)

#define	ISER_RX_LOGIN_SIZE (ISER_HEADERS_LEN + ISCSI_DEF_MAX_RECV_SEG_LEN)

#define	ISER_OBJECT_NAME_SIZE 64

#define	ISER_RX_PAD_SIZE

#define	ISER_MAX_CQ 4

Enumerations
enum	iser_ib_conn_state { ISER_CONN_INIT, ISER_CONN_PENDING, ISER_CONN_UP, ISER_CONN_TERMINATING, ISER_CONN_DOWN, ISER_CONN_STATES_NUM }

enum	iser_task_status { ISER_TASK_STATUS_INIT = 0, ISER_TASK_STATUS_STARTED, ISER_TASK_STATUS_COMPLETED }

enum	iser_data_dir { ISER_DIR_IN = 0, ISER_DIR_OUT, ISER_DIRS_NUM }

enum	iser_desc_type { ISCSI_TX_CONTROL, ISCSI_TX_SCSI_COMMAND, ISCSI_TX_DATAOUT }

Functions
struct iser_hdr	__attribute__ ((packed))

int	iser_conn_set_full_featured_mode (struct iscsi_conn *conn)

int	iser_send_control (struct iscsi_conn conn, struct iscsi_task task)

int	iser_send_command (struct iscsi_conn conn, struct iscsi_task task)

int	iser_send_data_out (struct iscsi_conn conn, struct iscsi_task task, struct iscsi_data *hdr)

void	iscsi_iser_recv (struct iscsi_conn conn, struct iscsi_hdr hdr, char *rx_data, int rx_data_len)

void	iser_conn_init (struct iser_conn *ib_conn)

void	iser_conn_get (struct iser_conn *ib_conn)

int	iser_conn_put (struct iser_conn *ib_conn, int destroy_cma_id_allowed)

void	iser_conn_terminate (struct iser_conn *ib_conn)

void	iser_rcv_completion (struct iser_rx_desc desc, unsigned long dto_xfer_len, struct iser_conn ib_conn)

void	iser_snd_completion (struct iser_tx_desc desc, struct iser_conn ib_conn)

void	iser_task_rdma_init (struct iscsi_iser_task *task)

void	iser_task_rdma_finalize (struct iscsi_iser_task *task)

void	iser_free_rx_descriptors (struct iser_conn *ib_conn)

void	iser_finalize_rdma_unaligned_sg (struct iscsi_iser_task *task, enum iser_data_dir cmd_dir)

int	iser_reg_rdma_mem (struct iscsi_iser_task *task, enum iser_data_dir cmd_dir)

int	iser_connect (struct iser_conn ib_conn, struct sockaddr_in src_addr, struct sockaddr_in *dst_addr, int non_blocking)

int	iser_reg_page_vec (struct iser_conn ib_conn, struct iser_page_vec page_vec, struct iser_mem_reg *mem_reg)

void	iser_unreg_mem (struct iser_mem_reg *mem_reg)

int	iser_post_recvl (struct iser_conn *ib_conn)

int	iser_post_recvm (struct iser_conn *ib_conn, int count)

int	iser_post_send (struct iser_conn ib_conn, struct iser_tx_desc tx_desc)

int	iser_dma_map_task_data (struct iscsi_iser_task iser_task, struct iser_data_buf data, enum iser_data_dir iser_dir, enum dma_data_direction dma_dir)

void	iser_dma_unmap_task_data (struct iscsi_iser_task *iser_task)

int	iser_initialize_task_headers (struct iscsi_task task, struct iser_tx_desc tx_desc)

int	iser_alloc_rx_descriptors (struct iser_conn *ib_conn)

Variables
u8	flags

u8	rsvd [3]

__be32	write_stag

__be64	write_va

__be32	read_stag

__be64	read_va

enum iser_ib_conn_state	__attribute__

struct iser_hdr	iser_header

struct iscsi_hdr	iscsi_header

char	data [ISER_RECV_DATA_SEG_LEN]

u64	dma_addr

struct ib_sge	rx_sg

char	pad [ISER_RX_PAD_SIZE]

struct iser_global	ig

int	iser_debug_level

Macro Definition Documentation

#define DRV_DATE "May 7th, 2006"

Definition at line 69 of file iscsi_iser.h.

#define DRV_NAME "iser"

Definition at line 66 of file iscsi_iser.h.

#define DRV_VER "0.1"

Definition at line 68 of file iscsi_iser.h.

#define ISCSI_ISER_SG_TABLESIZE (0x80000 >> SHIFT_4K)

Definition at line 96 of file iscsi_iser.h.

#define iser_dbg	(	fmt,
		arg...
	)

Value:

do {                        \
        if (iser_debug_level > 1)       \
            printk(KERN_DEBUG PFX "%s:" fmt,\
                __func__ , ## arg); \
    } while (0)

Definition at line 71 of file iscsi_iser.h.

#define ISER_DEF_CMD_PER_LUN 128

Definition at line 97 of file iscsi_iser.h.

#define iser_err	(	fmt,
		arg...
	)

Value:

do {                        \
        printk(KERN_ERR PFX "%s:" fmt,          \
               __func__ , ## arg);      \
    } while (0)

Definition at line 85 of file iscsi_iser.h.

#define ISER_HEADERS_LEN (sizeof(struct iser_hdr) + sizeof(struct iscsi_hdr))

Definition at line 136 of file iscsi_iser.h.

#define ISER_INFLIGHT_DATAOUTS 8

Definition at line 115 of file iscsi_iser.h.

#define ISER_MAX_CQ 4

Definition at line 229 of file iscsi_iser.h.

#define ISER_MAX_RX_MISC_PDUS 4 /* NOOP_IN(2) , ASYNC_EVENT(2) */

Definition at line 101 of file iscsi_iser.h.

#define ISER_MAX_TX_MISC_PDUS

Value:

6 /* NOOP_OUT(2), TEXT(1), *

* SCSI_TMFUNC(2), LOGOUT(1) */

Definition at line 103 of file iscsi_iser.h.

#define ISER_MIN_POSTED_RX (ISCSI_DEF_XMIT_CMDS_MAX >> 2)

Definition at line 107 of file iscsi_iser.h.

#define ISER_OBJECT_NAME_SIZE 64

Definition at line 143 of file iscsi_iser.h.

#define ISER_QP_MAX_RECV_DTOS (ISCSI_DEF_XMIT_CMDS_MAX)

Definition at line 105 of file iscsi_iser.h.

#define ISER_QP_MAX_REQ_DTOS

Value:

(ISCSI_DEF_XMIT_CMDS_MAX *    \
                    (1 + ISER_INFLIGHT_DATAOUTS) + \
                    ISER_MAX_TX_MISC_PDUS        + \
                    ISER_MAX_RX_MISC_PDUS)

Definition at line 117 of file iscsi_iser.h.

#define ISER_RECV_DATA_SEG_LEN 128

Definition at line 138 of file iscsi_iser.h.

#define ISER_RSV 0x04

Definition at line 124 of file iscsi_iser.h.

#define ISER_RX_LOGIN_SIZE (ISER_HEADERS_LEN + ISCSI_DEF_MAX_RECV_SEG_LEN)

Definition at line 140 of file iscsi_iser.h.

#define ISER_RX_PAD_SIZE

Value:

(256 - (ISER_RX_PAYLOAD_SIZE + \

sizeof(u64) + sizeof(struct ib_sge)))

Definition at line 218 of file iscsi_iser.h.

#define ISER_RX_PAYLOAD_SIZE (ISER_HEADERS_LEN + ISER_RECV_DATA_SEG_LEN)

Definition at line 139 of file iscsi_iser.h.

#define ISER_VER 0x10

Definition at line 122 of file iscsi_iser.h.

#define iser_warn	(	fmt,
		arg...
	)

Value:

do {                        \
        if (iser_debug_level > 0)       \
            printk(KERN_DEBUG PFX "%s:" fmt,\
                __func__ , ## arg); \
    } while (0)

Definition at line 78 of file iscsi_iser.h.

#define ISER_WSV 0x08

Definition at line 123 of file iscsi_iser.h.

#define MASK_4K (~(SIZE_4K-1))

Definition at line 93 of file iscsi_iser.h.

#define PFX DRV_NAME ": "

Definition at line 67 of file iscsi_iser.h.

#define SHIFT_4K 12

Definition at line 91 of file iscsi_iser.h.

#define SIZE_4K (1ULL << SHIFT_4K)

Definition at line 92 of file iscsi_iser.h.

Enumeration Type Documentation

enum iser_data_dir

Enumerator:

ISER_DIR_IN
ISER_DIR_OUT
ISER_DIRS_NUM

Definition at line 160 of file iscsi_iser.h.

enum iser_desc_type

Enumerator:

ISCSI_TX_CONTROL
ISCSI_TX_SCSI_COMMAND
ISCSI_TX_DATAOUT

Definition at line 201 of file iscsi_iser.h.

enum iser_ib_conn_state

Enumerator:

ISER_CONN_INIT
ISER_CONN_PENDING
ISER_CONN_UP
ISER_CONN_TERMINATING
ISER_CONN_DOWN
ISER_CONN_STATES_NUM

Definition at line 145 of file iscsi_iser.h.

enum iser_task_status

Enumerator:

ISER_TASK_STATUS_INIT
ISER_TASK_STATUS_STARTED
ISER_TASK_STATUS_COMPLETED

Definition at line 154 of file iscsi_iser.h.

Function Documentation

struct iser_hdr __attribute__ ( (packed) )

read

Definition at line 171 of file esd_usb2.c.

void iscsi_iser_recv	(	struct iscsi_conn *	conn,
		struct iscsi_hdr *	hdr,
		char *	rx_data,
		int	rx_data_len
	)

Definition at line 96 of file iscsi_iser.c.

int iser_alloc_rx_descriptors ( struct iser_conn * ib_conn )

Definition at line 173 of file iser_initiator.c.

void iser_conn_get ( struct iser_conn * ib_conn )

Definition at line 421 of file iser_verbs.c.

void iser_conn_init ( struct iser_conn * ib_conn )

Definition at line 589 of file iser_verbs.c.

int iser_conn_put	(	struct iser_conn *	ib_conn,
		int	destroy_cma_id_allowed
	)

Definition at line 426 of file iser_verbs.c.

int iser_conn_set_full_featured_mode ( struct iscsi_conn * conn )

void iser_conn_terminate ( struct iser_conn * ib_conn )

triggers start of the disconnect procedures and wait for them to be done

Definition at line 438 of file iser_verbs.c.

int iser_connect	(	struct iser_conn *	ib_conn,
		struct sockaddr_in *	src_addr,
		struct sockaddr_in *	dst_addr,
		int	non_blocking
	)

starts the process of connecting to the target sleeps until the connection is established or rejected

Definition at line 604 of file iser_verbs.c.

int iser_dma_map_task_data	(	struct iscsi_iser_task *	iser_task,
		struct iser_data_buf *	data,
		enum iser_data_dir	iser_dir,
		enum dma_data_direction	dma_dir
	)

Definition at line 313 of file iser_memory.c.

void iser_dma_unmap_task_data ( struct iscsi_iser_task * iser_task )

Definition at line 331 of file iser_memory.c.

void iser_finalize_rdma_unaligned_sg	(	struct iscsi_iser_task *	iser_task,
		enum iser_data_dir	cmd_dir
	)

iser_finalize_rdma_unaligned_sg

Definition at line 107 of file iser_memory.c.

void iser_free_rx_descriptors ( struct iser_conn * ib_conn )

Definition at line 217 of file iser_initiator.c.

int iser_initialize_task_headers	(	struct iscsi_task *	task,
		struct iser_tx_desc *	tx_desc
	)

Definition at line 137 of file iscsi_iser.c.

int iser_post_recvl ( struct iser_conn * ib_conn )

Definition at line 731 of file iser_verbs.c.

int iser_post_recvm	(	struct iser_conn *	ib_conn,
		int	count
	)

Definition at line 755 of file iser_verbs.c.

int iser_post_send	(	struct iser_conn *	ib_conn,
		struct iser_tx_desc *	tx_desc
	)

iser_start_send - Initiate a Send DTO operation

returns 0 on success, -1 on failure

Definition at line 790 of file iser_verbs.c.

void iser_rcv_completion	(	struct iser_rx_desc *	rx_desc,
		unsigned long	rx_xfer_len,
		struct iser_conn *	ib_conn
	)

iser_rcv_dto_completion - recv DTO completion

Definition at line 447 of file iser_initiator.c.

int iser_reg_page_vec	(	struct iser_conn *	ib_conn,
		struct iser_page_vec *	page_vec,
		struct iser_mem_reg *	mem_reg
	)

iser_reg_page_vec - Register physical memory

returns: 0 on success, errno code on failure

Definition at line 671 of file iser_verbs.c.

int iser_reg_rdma_mem	(	struct iscsi_iser_task *	iser_task,
		enum iser_data_dir	cmd_dir
	)

iser_reg_rdma_mem - Registers memory intended for RDMA, obtaining rkey and va

returns 0 on success, errno code on failure

Definition at line 355 of file iser_memory.c.

int iser_send_command	(	struct iscsi_conn *	conn,
		struct iscsi_task *	task
	)

iser_send_command - send command PDU

Definition at line 261 of file iser_initiator.c.

int iser_send_control	(	struct iscsi_conn *	conn,
		struct iscsi_task *	task
	)

Definition at line 383 of file iser_initiator.c.

int iser_send_data_out	(	struct iscsi_conn *	conn,
		struct iscsi_task *	task,
		struct iscsi_data *	hdr
	)

iser_send_data_out - send data out PDU

Definition at line 320 of file iser_initiator.c.

void iser_snd_completion	(	struct iser_tx_desc *	desc,
		struct iser_conn *	ib_conn
	)

Definition at line 498 of file iser_initiator.c.

void iser_task_rdma_finalize ( struct iscsi_iser_task * task )

Definition at line 538 of file iser_initiator.c.

void iser_task_rdma_init ( struct iscsi_iser_task * task )

Definition at line 521 of file iser_initiator.c.

void iser_unreg_mem ( struct iser_mem_reg * reg )

Unregister (previosuly registered) memory.

Definition at line 718 of file iser_verbs.c.

Variable Documentation

struct iser_device __attribute__

char data[ISER_RECV_DATA_SEG_LEN]

Definition at line 230 of file iscsi_iser.h.

u64 dma_addr

Definition at line 231 of file iscsi_iser.h.

u8 flags

Definition at line 134 of file iscsi_iser.h.

struct iser_global ig

Definition at line 93 of file iscsi_iser.c.

struct iscsi_hdr iscsi_header

Definition at line 229 of file iscsi_iser.h.

int iser_debug_level

Definition at line 83 of file iscsi_iser.c.

struct iser_hdr iser_header

Definition at line 228 of file iscsi_iser.h.

char pad[ISER_RX_PAD_SIZE]

Definition at line 233 of file iscsi_iser.h.

__be32 read_stag

Definition at line 138 of file iscsi_iser.h.

__be64 read_va

Definition at line 139 of file iscsi_iser.h.

u8 rsvd[3]

Definition at line 135 of file iscsi_iser.h.

struct ib_sge rx_sg

Definition at line 232 of file iscsi_iser.h.

__be32 write_stag

Definition at line 136 of file iscsi_iser.h.

__be64 write_va

Definition at line 137 of file iscsi_iser.h.

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation