zfcp_aux.c File Reference

#include <linux/miscdevice.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/module.h>
#include "zfcp_ext.h"
#include "zfcp_fc.h"
#include "zfcp_reqlist.h"

Go to the source code of this file.

Macros
#define	KMSG_COMPONENT   "zfcp"
#define	pr_fmt(fmt)   KMSG_COMPONENT ": " fmt
#define	ZFCP_BUS_ID_SIZE   20

Functions
	MODULE_AUTHOR ("IBM Deutschland Entwicklung GmbH - [email protected]")
	MODULE_DESCRIPTION ("FCP HBA driver")
	MODULE_LICENSE ("GPL")
	module_param_named (device, init_device, charp, 0400)
	MODULE_PARM_DESC (device,"specify initial device")
	module_init (zfcp_module_init)
	module_exit (zfcp_module_exit)
struct zfcp_port *	zfcp_get_port_by_wwpn (struct zfcp_adapter *adapter, u64 wwpn)
int	zfcp_status_read_refill (struct zfcp_adapter *adapter)
struct zfcp_adapter *	zfcp_adapter_enqueue (struct ccw_device *ccw_device)
void	zfcp_adapter_unregister (struct zfcp_adapter *adapter)
void	zfcp_adapter_release (struct kref *ref)
void	zfcp_device_unregister (struct device *dev, const struct attribute_group *grp)
struct zfcp_port *	zfcp_port_enqueue (struct zfcp_adapter *adapter, u64 wwpn, u32 status, u32 d_id)
void	zfcp_sg_free_table (struct scatterlist *sg, int count)
int	zfcp_sg_setup_table (struct scatterlist *sg, int count)

Macro Definition Documentation

#define KMSG_COMPONENT   "zfcp"

Definition at line 28 of file zfcp_aux.c.

#define pr_fmt

(

fmt

)

KMSG_COMPONENT ": " fmt

Definition at line 29 of file zfcp_aux.c.

#define ZFCP_BUS_ID_SIZE   20

Definition at line 39 of file zfcp_aux.c.

Function Documentation

MODULE_AUTHOR

(

"IBM Deutschland Entwicklung GmbH - [email protected]"

)

MODULE_DESCRIPTION

(

"FCP HBA driver"

)

module_exit

(

zfcp_module_exit

)

module_init

(

zfcp_module_init

)

MODULE_LICENSE

(

"GPL"

)

module_param_named	(	device	,
		init_device	,
		charp	,
		0400
	)

MODULE_PARM_DESC	(	device	,
		"specify initial device"
	)

struct zfcp_adapter* zfcp_adapter_enqueue ( struct ccw_device *  ccw_device )

read

zfcp_adapter_enqueue - enqueue a new adapter to the list : pointer to the struct cc_device

Returns: struct zfcp_adapter* Enqueues an adapter at the end of the adapter list in the driver data. All adapter internal structures are set up. Proc-fs entries are also created.

Definition at line 346 of file zfcp_aux.c.

void zfcp_adapter_release

(

struct kref *

ref

)

zfcp_adapter_release - remove the adapter from the resource list pointer to struct kref locks: adapter list write lock is assumed to be held by caller

Definition at line 451 of file zfcp_aux.c.

void zfcp_adapter_unregister

(

struct zfcp_adapter *

adapter

)

Definition at line 426 of file zfcp_aux.c.

void zfcp_device_unregister	(	struct device *	dev,
		const struct attribute_group *	grp
	)

zfcp_device_unregister - remove port, unit from system : reference to device which is to be removed : related reference to attribute group

Helper function to unregister port, unit from system

Definition at line 474 of file zfcp_aux.c.

struct zfcp_port* zfcp_get_port_by_wwpn ( struct zfcp_adapter *  adapter, u64  wwpn  )

read

zfcp_get_port_by_wwpn - find port in port list of adapter by wwpn : pointer to adapter to search for port : wwpn to search for

Returns: pointer to zfcp_port or NULL

Definition at line 193 of file zfcp_aux.c.

struct zfcp_port* zfcp_port_enqueue ( struct zfcp_adapter *  adapter, u64  wwpn, u32  status, u32  d_id  )

read

zfcp_port_enqueue - enqueue port to port list of adapter : adapter where remote port is added : WWPN of the remote port to be enqueued : initial status for the port : destination id of the remote port to be enqueued Returns: pointer to enqueued port on success, ERR_PTR on error

All port internal structures are set up and the sysfs entry is generated. d_id is used to enqueue ports with a well known address like the Directory Service for nameserver lookup.

Definition at line 501 of file zfcp_aux.c.

void zfcp_sg_free_table	(	struct scatterlist *	sg,
		int	count
	)

zfcp_sg_free_table - free memory used by scatterlists : pointer to scatterlist : number of scatterlist which are to be free'ed the scatterlist are expected to reference pages always

Definition at line 571 of file zfcp_aux.c.

int zfcp_sg_setup_table	(	struct scatterlist *	sg,
		int	count
	)

zfcp_sg_setup_table - init scatterlist and allocate, assign buffers : pointer to struct scatterlist : number of scatterlists which should be assigned with buffers of size page

Returns: 0 on success, -ENOMEM otherwise

Definition at line 590 of file zfcp_aux.c.

int zfcp_status_read_refill

(

struct zfcp_adapter *

adapter

)

zfcp_status_read_refill - refill the long running status_read_requests : ptr to struct zfcp_adapter for which the buffers should be refilled

Returns: 0 on success, 1 otherwise

if there are 16 or more status_read requests missing an adapter_reopen is triggered

Definition at line 285 of file zfcp_aux.c.