#include "ocs_os.h"
#include "ocs_hal.h"
#include "ocs_ioctl.h"

Detailed Description

Defines the iSCSI interface functions to the os specific code. Contains many of the iSCSI configuration parameters and structures. This code should be OS independant.

Definition in file ocs_iscsi.h.

Data Structures
struct	ocs_iscsi_mem_tracker_t
	iSCSI object memory tracker More...

struct	ocs_iscsi_lgn_retry_t
	object to queue login requests waiting for buffers More...

struct	ocs_iscsi_route_table_entry_t
	Structure used to hold the response entries of set_route_table command. More...

struct	ocs_iscsi_route_table_t

struct	ocs_config_ctx_t
	structure used to signal when a mailbox command callback is complete and passes the status and any other parameters back to the caller. More...

struct	ocs_iscsi_cluster_tgt_t

struct	ocs_iscsi_cluster_sendtargets_t

struct	ocs_iscsi_tgt_ip_t
	Stores information needed IP addresses for targets. More...

struct	ocs_iscsi_t
	iSCSI object More...

Macros
#define	ISCSI_LUN_ADDRESS_METHOD_SHIFT 6

#define	ISCSI_LUN_ADDRESS_METHOD_MASK 0xc0

#define	ISCSI_LUN_ADDR_METHOD_PERIPHERAL 0x0

#define	ISCSI_LUN_ADDR_METHOD_FLAT 0x1

#define	ISCSI_LUN_ADDR_METHOD_LOGICAL 0x2

#define	ISCSI_LUN_ADDR_METHOD_EXTENDED 0x3

#define	ISCSI_LUN_ADDR_SIMPLE_MAX 0xff

#define	ISCSI_LUN_ADDR_FLAT_MAX 0x3fff

#define	LOW_THRESH 0x10000000

#define	HIGH_THRESH 0xefffffff

#define	GT_WRAPPED(a_cmd_sn, b_cmd_sn)

#define	GT_NOTWRAPPED(a, b)

#define	GT_WRAP(a, b) (GT_NOTWRAPPED((a), (b)) \|\| GT_WRAPPED((a), (b)))

#define	GTE_WRAP(a, b) ( ( (a)==(b) ) \|\| GT_WRAP((a),(b)) )

#define	OCS_CNFG_CTX_COMPL_TIMEOUT (3 * 1000000)

#define	OCS_ISCSI_MAX_LINK_STATE_CALLBACKS 2

#define	OCS_CLUST_TARGET_KEY_RETCNT (9999)

#define	OCS_CLUST_TARGET_TTT (0xFFFFFF00)

#define	OCS_MAX_IP 256

Typedefs
typedef void(*	ocs_link_state_cb_t )(ocs_t *, ocs_link_state_e)
	Template for a function to be called when the link state changes. More...

Enumerations
enum	ocs_pdu_process_rtn_e { OCS_PDU_RTN_PROCESSED = 0, OCS_PDU_RTN_CBIT_QUEUED, OCS_PDU_RTN_SEND_REJECT, OCS_PDU_RTN_NO_RESOURCES, OCS_PDU_RTN_GENERAL_ERROR }
	iSCSI PDU processing return codes More...

enum	ocs_iscsi_retry_type_e { OCS_RETRY_REQ_RECV_LOGIN_RSP, OCS_RETRY_REQ_RECV_LOGOUT, OCS_RETRY_REQ_SEND_ASYNC, OCS_RETRY_REQ_SEND_LOGIN, OCS_RETRY_REQ_SEND_LOGIN_RSP_INVALID, OCS_RETRY_REQ_SEND_LOGOUT, OCS_RETRY_REQ_SEND_LOGOUT_RSP, OCS_RETRY_REQ_SEND_NOP_IN, OCS_RETRY_REQ_SEND_NOP_OUT, OCS_RETRY_REQ_SEND_REJECT }
	The types of requests that may be retried. More...

enum	ocs_config_ctx_e { OCS_CNFG_CTX_IP_ADD, OCS_CNFG_CTX_IP_QUERY, OCS_CNFG_CTX_IP_REMOVE, OCS_CNFG_CTX_ISNS_DISC, OCS_CNFG_CTX_ISNS_SEND, OCS_CNFG_CTX_LISTEN_START, OCS_CNFG_CTX_LISTEN_STOP, OCS_CNFG_CTX_PORTAL_CREATE, OCS_CNFG_CTX_PORTAL_DELETE, OCS_CNFG_CTX_SET_GATEWAY, OCS_CNFG_CTX_SET_MAC, OCS_CNFG_CTX_SET_MTU, OCS_CNFG_CTX_SET_VLAN, OCS_CNFG_CTX_SET_ROUTE_TABLE, OCS_CNFG_CTX_GET_ROUTE_TABLE, OCS_CNFG_CTX_MAX }
	The types of mailbox operations we want to wait for. More...

Functions
int32_t	ocs_iscsi_interrupts_required (ocs_os_handle_t, ocs_hal_t *)
	Returns the number of interrupts needed for this adapter. More...

int32_t	ocs_iscsi_initialize (ocs_os_handle_t, ocs_iscsi_t , ocs_hal_t , uint32_t)
	Initialize the iSCSI device by setting up the chip. More...

void	ocs_iscsi_uninitialize (ocs_iscsi_t *)
	Indicate that HAL is not initialized. More...

int32_t	ocs_iscsi_teardown (ocs_iscsi_t *)
	Shut down the device. More...

int32_t	ocs_iscsi_register_link_state_callback (ocs_t *ocs, ocs_link_state_cb_t)
	Register to receive link state change notifications. More...

void	ocs_iscsi_unregister_link_state_callback (ocs_t *ocs, ocs_link_state_cb_t)
	Unregister a link state change callback. More...

void	ocs_iscsi_rx_buffers_free (ocs_iscsi_t , ocs_hal_rq_buffer_t , ocs_hal_rq_buffer_t *)
	Add a receive buffer pair to the Receive Queue, if an error is received, then queue the buffer. More...

void	ocs_iscsi_cxn_req_invalidate (ocs_iscsi_t *iscsi)

int32_t	ocs_iscsi_inet_pton4 (const char src, ocs_ip_address_t ip)
	Converts an IPv4 address from a string to the IP structure. More...

int32_t	ocs_iscsi_inet_pton6 (const char src, ocs_ip_address_t ip)
	Converts an IPv6 address from a string to the IP structure. More...

ocs_hal_ip_type_e	ocs_iscsi_convert_to_hal_ip_type (ocs_ip_type_e ip_type)
	Convert an iSCSI IP type to the HAL value. More...

ocs_ip_type_e	ocs_iscsi_convert_to_ip_type (ocs_hal_ip_type_e ip_type)
	Convert an HAL IP type to the iSCSI API value. More...

void	ocs_iscsi_convert_to_hal_ip (ocs_ip_address_t ip, ocs_hal_ip_address_t hal_ip)
	Convert an iSCSI IP address to the HAL IP address. More...

void	ocs_iscsi_convert_to_ip (ocs_ip_address_t ip, ocs_hal_ip_address_t hal_ip)
	Convert an iSCSI IP address to the HAL IP address. More...

void	ocs_iscsi_ipsub_combine (ocs_ip_address_subnet_t ipsub, ocs_ip_address_t ip, ocs_ip_address_t *subnet)
	Combines an iSCSI IP address and subnet into the combined structure. More...

void	ocs_iscsi_ipsub_split (ocs_ip_address_subnet_t ipsub, ocs_ip_address_t ip, ocs_ip_address_t *subnet)
	Splits an iSCSI IP address and subnet from the combined structure. More...

void	format_ip_address (ocs_ip_type_e ip_type, uint8_t address, char buffer, int size)
	Format an IP address into a string. More...

void	format_mac_address (uint8_t address, char buffer, int size)
	Format a MAC address into a string. More...

int32_t	parse_mac_address (const char src, uint8_t dest)
	Parse a string into a MAC address. More...

int32_t	ocs_iscsi_send_tmf_resp (ocs_io_t io, uint8_t response, ocs_scsi_io_cb_t cb, void arg)
	send TMF response data More...

int32_t	ocs_scsi_io_dispatch (ocs_io_t io, void cb)
	Attempt to dispatch an IO. More...

void	ocs_scsi_pending_cleanup (ocs_node_t *node)
	Clean up any IOs on the pending list when a connection goes down. More...

void	ocs_target_io_aborted_nop_cmpl (ocs_cxn_t *cxn)
	This function is called whenever a target NOP completes. More...

int32_t	ocs_iscsi_add_ip_to_tbl (ocs_t ocs, char desc, ocs_ip_address_subnet_t *ipsub, ocs_hal_portal_t portal)
	Adds an IP address to the table. More...

int32_t	ocs_iscsi_remove_ip_from_tbl (ocs_t ocs, ocs_ip_address_subnet_t ipsub, ocs_hal_portal_t portal)
	Remove an IP address from the table. More...

int32_t	ocs_iscsi_is_ip_in_tbl (ocs_t ocs, ocs_ip_address_subnet_t ipsub)
	Checks if an IP address/subnet is present in the table. More...

ocs_pdu_process_rtn_e	ocs_iscsi_tgt_process_cmd_sn (ocs_iscsi_t iscsi, ocs_cxn_t cxn, ocs_hal_rq_buffer_t hdr, uint32_t hdr_len, ocs_hal_rq_buffer_t data, uint32_t data_len, uint8_t code, uint8_t *reject_reason)
	Function to process unsolicited PDUs for a target. More...

void	ocs_iscsi_tracker_init (ocs_iscsi_mem_tracker_t *tracker)
	Initialize the memory tracker. More...

void	ocs_iscsi_tracker_free (ocs_iscsi_t iscsi, ocs_iscsi_mem_tracker_t tracker)
	Free the memory associated with a memory tracker. More...

int32_t	ocs_iscsi_tracker_alloc (ocs_iscsi_t iscsi, ocs_iscsi_mem_tracker_t tracker, uint8_t zero, uint32_t object_size, uint32_t alignment, uint32_t num_objects)
	Allocate a group of objects uses pages to minimize waste. More...

ocs_dma_t *	ocs_iscsi_tracker_calc (ocs_iscsi_mem_tracker_t *tracker, uint32_t obj_offset)
	Helper to return the pointers for a specific object in the group. More...

int32_t	ocs_iscsi_portal_read_vlan_ids (ocs_t ocs, void arg_out, uint32_t arg_out_length)
	Read VLAN IDs to provided buffer. More...

int32_t	ocs_iscsi_portal_del_vlan (ocs_t *ocs, ocs_hal_portal_t iface)
	Delete iface handle and VLAN from portal_list. More...

int32_t	ocs_iscsi_route_table_del_entry (ocs_t ocs, ocs_ip_address_subnet_t ipsub, ocs_ip_address_t *gateway)
	Deletes an entry from a routing table. More...

int32_t	ocs_iscsi_route_table_read (ocs_t ocs, ocs_route_table_t route_table)

int32_t	ocs_iscsi_route_table_add_entry (ocs_t ocs, ocs_ip_address_subnet_t ipsub, ocs_ip_address_t *gateway)
	Adds an entry to a routing table. More...

void	ocs_iscsi_cluster_tgts_free (ocs_iscsi_t *iscsi)
	iscsi cluster targets free More...

bool	ocs_scsi_check_cxn_wq_full (ocs_t ocs, ocs_cxn_t cxn)
	Check Connection WQ's full status. More...

Macro Details

#define GT_NOTWRAPPED	(	a,
		b
	)

Value:

(((a) > (b)) && (((a) < HIGH_THRESH) || \

((b) > LOW_THRESH)))

LOW_THRESH

#define LOW_THRESH

Definition: ocs_iscsi.h:67

HIGH_THRESH

#define HIGH_THRESH

Definition: ocs_iscsi.h:68

Definition at line 79 of file ocs_iscsi.h.

#define GT_WRAP	(	a,
		b
	)	(GT_NOTWRAPPED((a), (b)) \|\| GT_WRAPPED((a), (b)))

Definition at line 87 of file ocs_iscsi.h.

#define GT_WRAPPED	(	a_cmd_sn,
		b_cmd_sn
	)

Value:

(((b_cmd_sn) > HIGH_THRESH) && \

((a_cmd_sn) < LOW_THRESH))

LOW_THRESH

#define LOW_THRESH

Definition: ocs_iscsi.h:67

HIGH_THRESH

#define HIGH_THRESH

Definition: ocs_iscsi.h:68

Definition at line 73 of file ocs_iscsi.h.

#define GTE_WRAP	(	a,
		b
	)	( ( (a)==(b) ) \|\| GT_WRAP((a),(b)) )

Definition at line 94 of file ocs_iscsi.h.

#define HIGH_THRESH 0xefffffff

Definition at line 68 of file ocs_iscsi.h.

#define ISCSI_LUN_ADDR_FLAT_MAX 0x3fff

Definition at line 62 of file ocs_iscsi.h.

#define ISCSI_LUN_ADDR_METHOD_EXTENDED 0x3

Definition at line 59 of file ocs_iscsi.h.

#define ISCSI_LUN_ADDR_METHOD_FLAT 0x1

Definition at line 57 of file ocs_iscsi.h.

#define ISCSI_LUN_ADDR_METHOD_LOGICAL 0x2

Definition at line 58 of file ocs_iscsi.h.

#define ISCSI_LUN_ADDR_METHOD_PERIPHERAL 0x0

Definition at line 56 of file ocs_iscsi.h.

#define ISCSI_LUN_ADDR_SIMPLE_MAX 0xff

Definition at line 61 of file ocs_iscsi.h.

#define ISCSI_LUN_ADDRESS_METHOD_MASK 0xc0

Definition at line 55 of file ocs_iscsi.h.

#define ISCSI_LUN_ADDRESS_METHOD_SHIFT 6

Definition at line 54 of file ocs_iscsi.h.

#define LOW_THRESH 0x10000000

Definition at line 67 of file ocs_iscsi.h.

#define OCS_CLUST_TARGET_KEY_RETCNT (9999)

Definition at line 242 of file ocs_iscsi.h.

#define OCS_CLUST_TARGET_TTT (0xFFFFFF00)

Definition at line 252 of file ocs_iscsi.h.

#define OCS_CNFG_CTX_COMPL_TIMEOUT (3 * 1000000)

Definition at line 181 of file ocs_iscsi.h.

#define OCS_ISCSI_MAX_LINK_STATE_CALLBACKS 2

Definition at line 236 of file ocs_iscsi.h.

#define OCS_MAX_IP 256

Definition at line 288 of file ocs_iscsi.h.

Type Details

typedef void(* ocs_link_state_cb_t)(ocs_t *, ocs_link_state_e)

Template for a function to be called when the link state changes.

Definition at line 234 of file ocs_iscsi.h.

Enumeration Details

enum ocs_config_ctx_e

The types of mailbox operations we want to wait for.

Enumerator
OCS_CNFG_CTX_IP_ADD
OCS_CNFG_CTX_IP_QUERY
OCS_CNFG_CTX_IP_REMOVE
OCS_CNFG_CTX_ISNS_DISC
OCS_CNFG_CTX_ISNS_SEND
OCS_CNFG_CTX_LISTEN_START
OCS_CNFG_CTX_LISTEN_STOP
OCS_CNFG_CTX_PORTAL_CREATE
OCS_CNFG_CTX_PORTAL_DELETE
OCS_CNFG_CTX_SET_GATEWAY
OCS_CNFG_CTX_SET_MAC
OCS_CNFG_CTX_SET_MTU
OCS_CNFG_CTX_SET_VLAN
OCS_CNFG_CTX_SET_ROUTE_TABLE
OCS_CNFG_CTX_GET_ROUTE_TABLE
OCS_CNFG_CTX_MAX

Definition at line 186 of file ocs_iscsi.h.

enum ocs_iscsi_retry_type_e

The types of requests that may be retried.

Enumerator
OCS_RETRY_REQ_RECV_LOGIN_RSP
OCS_RETRY_REQ_RECV_LOGOUT
OCS_RETRY_REQ_SEND_ASYNC
OCS_RETRY_REQ_SEND_LOGIN
OCS_RETRY_REQ_SEND_LOGIN_RSP_INVALID
OCS_RETRY_REQ_SEND_LOGOUT
OCS_RETRY_REQ_SEND_LOGOUT_RSP
OCS_RETRY_REQ_SEND_NOP_IN
OCS_RETRY_REQ_SEND_NOP_OUT
OCS_RETRY_REQ_SEND_REJECT

Definition at line 130 of file ocs_iscsi.h.

enum ocs_pdu_process_rtn_e

iSCSI PDU processing return codes

Enumerator
OCS_PDU_RTN_PROCESSED
OCS_PDU_RTN_CBIT_QUEUED
OCS_PDU_RTN_SEND_REJECT
OCS_PDU_RTN_NO_RESOURCES
OCS_PDU_RTN_GENERAL_ERROR

Definition at line 99 of file ocs_iscsi.h.

Function Details

void format_ip_address	(	ocs_ip_type_e	ip_type,
		uint8_t *	address,
		char *	buffer,
		int	size
	)

Format an IP address into a string.

Description: Given a pointer to an IP address and a buffer, this function writes the IP address into the buffer in human readable form.

Parameters

ip_type	Enumerated type indicating the type of IP address (IPV4, IPV6, etc).
address	Pointer to an array containing the IP address to be formatted. 4 bytes for IPV4, 16 bytes for IPV6.
buffer	Pointer to the buffer into which the result will be placed.
size	Size of the output buffer in bytes.

Returns: None.

Definition at line 460 of file ocs_iscsi.c.

void format_mac_address	(	uint8_t *	address,
		char *	buffer,
		int	size
	)

Format a MAC address into a string.

Description: Given a pointer to a MAC address and a buffer, this function writes the MAC address into the buffer in human readable form.

Note: To avoid truncation, the output buffer must be at least 18 bytes long.

Parameters

address	Pointer to an array of 6 bytes containing the MAC address.
buffer	Pointer to the buffer into which the result will be placed.
size	Size of the output buffer in bytes.

Returns: None.

Definition at line 711 of file ocs_iscsi.c.

int32_t ocs_iscsi_add_ip_to_tbl	(	ocs_t *	ocs,
		char *	desc,
		ocs_ip_address_subnet_t *	ipsub,
		ocs_hal_portal_t	portal
	)

Adds an IP address to the table.

Parameters

ocs	Pointer to the ocs structure.
desc	A character description of the IP address being added.
ipsub	Pointer to the IP/subnet structure.
portal	Portal that has the IP address.

Definition at line 2622 of file ocs_iscsi.c.

void ocs_iscsi_cluster_tgts_free ( ocs_iscsi_t * iscsi )

iscsi cluster targets free

Definition at line 2211 of file ocs_iscsi.c.

void ocs_iscsi_convert_to_hal_ip	(	ocs_ip_address_t *	ip,
		ocs_hal_ip_address_t *	hal_ip
	)

Convert an iSCSI IP address to the HAL IP address.

Parameters

ip	Pointer to the iSCSI IP address.
hal_ip	Pointer to the HAL IP address.

Definition at line 359 of file ocs_iscsi.c.

ocs_hal_ip_type_e ocs_iscsi_convert_to_hal_ip_type ( ocs_ip_type_e ip_type )

Convert an iSCSI IP type to the HAL value.

Parameters

ip_type iSCSI IP type to convert.

Returns: Returns the HAL IP type or OCS_HAL_IP_TYPE_V4 if an invalid value is passed.

Definition at line 296 of file ocs_iscsi.c.

void ocs_iscsi_convert_to_ip	(	ocs_ip_address_t *	ip,
		ocs_hal_ip_address_t *	hal_ip
	)

Convert an iSCSI IP address to the HAL IP address.

Parameters

ip	Pointer to the iSCSI IP address.
hal_ip	Pointer to the HAL IP address.

Definition at line 372 of file ocs_iscsi.c.

ocs_ip_type_e ocs_iscsi_convert_to_ip_type ( ocs_hal_ip_type_e ip_type )

Convert an HAL IP type to the iSCSI API value.

Parameters

ip_type HAL IP type to convert.

Returns: Returns the iSCSI IP type or OCS_IP_TYPE_V4 if an invalid value is passed.

Definition at line 327 of file ocs_iscsi.c.

void ocs_iscsi_cxn_req_invalidate ( ocs_iscsi_t * iscsi )

Definition at line 4456 of file ocs_iscsi.c.

int32_t ocs_iscsi_inet_pton4	(	const char *	src,
		ocs_ip_address_t *	ip
	)

Converts an IPv4 address from a string to the IP structure.

Parameters

src	Pointer to the ASCII IP address.
ip	Pointer to a IP address structure.

Returns: Returns 0 for a valid IP address.

Definition at line 513 of file ocs_iscsi.c.

int32_t ocs_iscsi_inet_pton6	(	const char *	src,
		ocs_ip_address_t *	ip
	)

Converts an IPv6 address from a string to the IP structure.

Parameters

src	Pointer to the ASCII IP address.
ip	Pointer to an IP address structure.

Returns: Returns 0 for a valid IP address.

Definition at line 574 of file ocs_iscsi.c.

void ocs_iscsi_ipsub_combine	(	ocs_ip_address_subnet_t *	ipsub,
		ocs_ip_address_t *	ip,
		ocs_ip_address_t *	subnet
	)

Combines an iSCSI IP address and subnet into the combined structure.

Parameters

ipsub	Pointer to the combined iSCSI IP/subnet address.
ip	Pointer to the IP address.
subnet	Pointer to the IP subnet address.

Definition at line 414 of file ocs_iscsi.c.

void ocs_iscsi_ipsub_split	(	ocs_ip_address_subnet_t *	ipsub,
		ocs_ip_address_t *	ip,
		ocs_ip_address_t *	subnet
	)

Splits an iSCSI IP address and subnet from the combined structure.

Parameters

ipsub	Pointer to the combined iSCSI IP/subnet address.
ip	Pointer to the IP address.
subnet	Pointer to the IP subnet address.

Definition at line 431 of file ocs_iscsi.c.

int32_t ocs_iscsi_is_ip_in_tbl	(	ocs_t *	ocs,
		ocs_ip_address_subnet_t *	ipsub
	)

Checks if an IP address/subnet is present in the table.

Parameters

ocs	Pointer to the ocs structure.
ipsub	Pointer to the IP address/subnet structure to check.

Returns: Returns TRUE if the IP address is found.

Definition at line 2742 of file ocs_iscsi.c.

int32_t ocs_iscsi_portal_del_vlan	(	ocs_t *	ocs,
		ocs_hal_portal_t	iface
	)

Delete iface handle and VLAN from portal_list.

Parameters

ocs	Pointer to the ocs structure that represents this device.
iface	The interface handle to delete
vlan_tag	The vlan id to delete

Returns: Returns 0 on success, otherwise a negative value

Definition at line 3011 of file ocs_iscsi.c.

int32_t ocs_iscsi_portal_read_vlan_ids	(	ocs_t *	ocs,
		void *	arg_out,
		uint32_t	arg_out_length
	)

Read VLAN IDs to provided buffer.

Parameters

ocs	Pointer to the ocs structure that represents this device.
arg_out	Pointer to output buffer
arg_out_length	Length of output buffer

Returns: Returns 0 on success, otherwise a negative value

Definition at line 3041 of file ocs_iscsi.c.

int32_t ocs_iscsi_register_link_state_callback	(	ocs_t *	ocs,
		ocs_link_state_cb_t	cb
	)

Register to receive link state change notifications.

Description: This function is used by upper level drivers to register a function which should be called when the link state changes.

Returns: Returns 0 on success, or a negative error code value on failure.

Definition at line 3324 of file ocs_iscsi.c.

int32_t ocs_iscsi_remove_ip_from_tbl	(	ocs_t *	ocs,
		ocs_ip_address_subnet_t *	ipsub,
		ocs_hal_portal_t	portal
	)

Remove an IP address from the table.

Parameters

ocs	Pointer to the ocs structure.
ipsub	Pointer to the IP/subnet structure.
portal	Portal that has the IP address.

Returns: Returns 0 if the address was removed, or -1 if the address was not found.

Definition at line 2696 of file ocs_iscsi.c.

int32_t ocs_iscsi_route_table_add_entry	(	ocs_t *	ocs,
		ocs_ip_address_subnet_t *	ipsub,
		ocs_ip_address_t *	gateway
	)

Adds an entry to a routing table.

Parameters

ocs	Pointer to the ocs structure that represents this device.
ipsub	IP Address, subnet and gateway to add.

Returns: Returns 0 on success.

Definition at line 2328 of file ocs_iscsi.c.

int32_t ocs_iscsi_route_table_del_entry	(	ocs_t *	ocs,
		ocs_ip_address_subnet_t *	ipsub,
		ocs_ip_address_t *	gateway
	)

Deletes an entry from a routing table.

Parameters

ocs	Pointer to the ocs structure that represents this device.
ipsub	IP Address, subnet and gateway to delete.

Returns: Returns 0 on success.

Definition at line 2276 of file ocs_iscsi.c.

int32_t ocs_iscsi_route_table_read	(	ocs_t *	ocs,
		ocs_route_table_t *	route_table
	)

Definition at line 2371 of file ocs_iscsi.c.

void ocs_iscsi_rx_buffers_free	(	ocs_iscsi_t *	iscsi,
		ocs_hal_rq_buffer_t *	header,
		ocs_hal_rq_buffer_t *	payload
	)

Add a receive buffer pair to the Receive Queue, if an error is received, then queue the buffer.

Parameters

iscsi	Pointer to the iSCSI object.
header	DMA memory for the unsolicited header.
payload	DMA memory for the unsolicited payload.

Definition at line 4447 of file ocs_iscsi.c.

ocs_pdu_process_rtn_e ocs_iscsi_tgt_process_cmd_sn	(	ocs_iscsi_t *	iscsi,
		ocs_cxn_t *	cxn,
		ocs_hal_rq_buffer_t *	hdr,
		uint32_t	hdr_len,
		ocs_hal_rq_buffer_t *	data,
		uint32_t	data_len,
		uint8_t	code,
		uint8_t *	reject_reason
	)

Function to process unsolicited PDUs for a target.

Parameters

iscsi	Pointer to the iSCSI structure that represents this device.
cxn	Pointer to the connection object.
hdr	DMA memory information for the header.
hdr_len	Length of the header received.
data	DMA memory information for the data.
data_len	Length of the data received.
code	Type of callback received from the chip (i.e. SLI_STATUS_UNSOL_DATA_DIGEST_ERROR).
reject_reason	Returns the reject reason.

Returns: Returns 0 on success.

Definition at line 4042 of file ocs_iscsi.c.

void ocs_iscsi_unregister_link_state_callback	(	ocs_t *	ocs,
		ocs_link_state_cb_t	cb
	)

Unregister a link state change callback.

Description: This function is used by upper level drivers to remove the registration of a link state callback function.

Returns: None.

Definition at line 3360 of file ocs_iscsi.c.

bool ocs_scsi_check_cxn_wq_full	(	ocs_t *	ocs,
		ocs_cxn_t *	cxn
	)

Check Connection WQ's full status.

Parameters

ocs	Pointer to OCS object
cxn	Pointer to connection object

Returns: true if connection WQ is full, otherwise false

Definition at line 2374 of file ocs_scsi.c.

int32_t ocs_scsi_io_dispatch	(	ocs_io_t *	io,
		void *	cb
	)

Attempt to dispatch an IO.

Description

An IO is dispatched. The steps are as follows:

Try to allocate a HAL IO. If none is available, place this IO at the tail of the pending IO list.
With a HAL IO in hand, if there are IOs on the pending IO list, push this IO on the tail of the pending list and pop the head of the pending list.
Attach this IO to the HAL IO and submit it.

Parameters

io	Pointer to IO structure.
cb	Callback function.

Returns: Returns 0 for success, or a negative error code value for failure.

Definition at line 475 of file ocs_scsi.c.

void ocs_scsi_pending_cleanup ( ocs_node_t * node )

Clean up any IOs on the pending list when a connection goes down.

Parameters

node	Pointer to node structure.

Definition at line 598 of file ocs_scsi.c.

void ocs_target_io_aborted_nop_cmpl ( ocs_cxn_t * cxn )

This function is called whenever a target NOP completes.

Description: Once a TCP ACK is received, the NOP request completes. We can now free any aborted IOs and they are also TCP ACKed.

Parameters

cxn	Pointer to the connection object.

Definition at line 120 of file ocs_scsi.c.

int32_t parse_mac_address	(	const char *	src,
		uint8_t *	dest
	)

Parse a string into a MAC address.

Description: This function parses a human readable MAC address into an array of 6 bytes.

The input should be a string of six two-digit hex numbers, optionally separated by - or :. If the input string is not in one of these formats the results are undefined.

Parameters

src	Pointer to the input string.
dest	Pointer to an array of at least 6 bytes in which the MAC address will be stored.

Returns: Returns 0 on success; or -1 if the string does not represent a valid MAC address.

Definition at line 737 of file ocs_iscsi.c.

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