ZFCP HBA API Library 1
vlib_sysfs.c File Reference

All calls that use the sysfs. More...

#include "vlib.h"

Functions

static HBA_STATUS addPortByName (struct vlib_adapter *adapter, char *name)
 add a port to the adapters repos
static HBA_STATUS addAdapterByDevPath (char *dev_path)
 add an adapter to the adapters repos
static HBA_STATUS getPortAttributes (HBA_PORTATTRIBUTES **pPortattributes, char *classpath)
 Retrieve adapter attributes.
HBA_STATUS sysfs_createAndReadConfigPorts (struct vlib_adapter *adapter)
 Read and store all discovered ports of an adapter.
HBA_STATUS sysfs_createAndReadConfigAdapter ()
 Read all adapters from /sys/bus/ccw/drivers/zfcp and add them to the repository.
int sysfs_getUnitsFromPort (struct vlib_port *port)
 Get unit configuration information for a port.
HBA_STATUS sysfs_getDiscoveredPortAttributes (HBA_PORTATTRIBUTES **pAttrs, struct vlib_port *port)
 Retrieve adapter attributes.
HBA_STATUS sysfs_getAdapterPortAttributes (HBA_PORTATTRIBUTES **pAttrs, struct vlib_adapter *adapter)
 Retrieve adapter attributes.
HBA_STATUS sysfs_getAdapterAttributes (HBA_ADAPTERATTRIBUTES **pAttrs, struct vlib_adapter *adapter)
 Retrieve adapter attributes.
HBA_STATUS sysfs_getPortStatistics (HBA_PORTSTATISTICS **pS, struct vlib_adapter *adapter)
 Retrieve adapter port statistics.

Detailed Description

All calls that use the sysfs.

Function Documentation

◆ addAdapterByDevPath()

HBA_STATUS addAdapterByDevPath ( char * dev_path)
static

add an adapter to the adapters repos

Parameters
*dev_paththe sysfs device as seen under /sys/devices/css0/x.x.xxx/x.x.xxxx
Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.
Locks:
vlib_data.mutex must be held

References addAdapterToRepos(), vlib_adapter_ident::bus_dev_name, vlib_adapter_ident::class_dev_name, vlib_adapter_ident::devid, vlib_adapter_ident::did, vlib_adapter_ident::host, vlib_adapter::ident, vlib_adapter_ident::sysfsPath, vlib_adapter_ident::wwnn, and vlib_adapter_ident::wwpn.

Referenced by sysfs_createAndReadConfigAdapter().

◆ addPortByName()

HBA_STATUS addPortByName ( struct vlib_adapter * adapter,
char * name )
static

add a port to the adapters repos

Parameters
*adapterthe adapter to which the add the port to
*namethe unique name of the remote port as in fc_remote_ports
Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.
Locks:
vlib_data.mutex must be held

References addPortToRepos(), vlib_port::channel, vlib_port::did, vlib_port::host, vlib_port::name, vlib_port::target, vlib_port::wwnn, and vlib_port::wwpn.

Referenced by sysfs_createAndReadConfigPorts(), and sysfs_getAdapterPortAttributes().

◆ getPortAttributes()

HBA_STATUS getPortAttributes ( HBA_PORTATTRIBUTES ** pPortattributes,
char * classpath )
static

Retrieve adapter attributes.

Parameters
**pPortattributes,HBA_ADAPTERATTRIBUTESto be filled
*adapterto work with
Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.

This function reads attributes from sysfs to fill in the required information.

References vlib_wwn_to_HBA_WWN(), vlibCharToIntCOS(), vlibCharToIntPortSpeed(), vlibCharToIntPortState(), and vlibCharToIntPortType().

Referenced by sysfs_getAdapterPortAttributes(), and sysfs_getDiscoveredPortAttributes().

◆ sysfs_createAndReadConfigAdapter()

HBA_STATUS sysfs_createAndReadConfigAdapter ( )

Read all adapters from /sys/bus/ccw/drivers/zfcp and add them to the repository.

Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.
Locks:
vlib_data.mutex must be held

References addAdapterByDevPath(), vlib_data::isValid, and revalidateAdapters().

Referenced by HBA_LoadLibrary(), and revalidateRepository().

◆ sysfs_createAndReadConfigPorts()

HBA_STATUS sysfs_createAndReadConfigPorts ( struct vlib_adapter * adapter)

Read and store all discovered ports of an adapter.

Parameters
*adapterpointer to the adapter in which we are interested
Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.
Locks:
vlib_data.mutex must be held

References addPortByName(), vlib_adapter_ident::devid, vlib_adapter_ident::host, vlib_adapter::ident, and vlib_adapter_ident::sysfsPath.

Referenced by revalidatePorts(), and updateAdapter().

◆ sysfs_getAdapterAttributes()

HBA_STATUS sysfs_getAdapterAttributes ( HBA_ADAPTERATTRIBUTES ** pAttrs,
struct vlib_adapter * adapter )

Retrieve adapter attributes.

Parameters
**pAdapterattributes,HBA_ADAPTERATTRIBUTESto be filled
*adapterto work with
Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.

This function reads attributes from sysfs to fill in the required information.

References vlib_adapter_ident::bus_dev_name, vlib_adapter_ident::host, vlib_adapter::ident, vlib_adapter_ident::sysfsPath, vlib_wwn_to_HBA_WWN(), and vlib_adapter_ident::wwnn.

Referenced by HBA_GetAdapterAttributes().

◆ sysfs_getAdapterPortAttributes()

HBA_STATUS sysfs_getAdapterPortAttributes ( HBA_PORTATTRIBUTES ** pAttrs,
struct vlib_adapter * adapter )

Retrieve adapter attributes.

Parameters
**pPortattributes,HBA_ADAPTERATTRIBUTESto be filled
*adapterto work with
Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.

This function reads attributes from sysfs to fill in the required information.

References addPortByName(), vlib_adapter_ident::devid, getPortAttributes(), vlib_adapter_ident::host, vlib_adapter::ident, and vlib_adapter_ident::sysfsPath.

Referenced by HBA_GetAdapterPortAttributes().

◆ sysfs_getDiscoveredPortAttributes()

HBA_STATUS sysfs_getDiscoveredPortAttributes ( HBA_PORTATTRIBUTES ** pAttrs,
struct vlib_port * port )

Retrieve adapter attributes.

Parameters
**pPortattributes,HBA_ADAPTERATTRIBUTESto be filled
*adapterto work with
Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.

This function reads attributes from sysfs to fill in the required information.

References getPortAttributes(), and vlib_port::name.

Referenced by HBA_GetDiscoveredPortAttributes().

◆ sysfs_getPortStatistics()

HBA_STATUS sysfs_getPortStatistics ( HBA_PORTSTATISTICS ** pS,
struct vlib_adapter * adapter )

Retrieve adapter port statistics.

Parameters
**pPortstatistics,HBA_PORTSTATISTICSto be filled
*adapterto work with
Returns
  • HBA_STATUS_ERROR if any other internal error occurs
    • HBA_STATUS_OK on success.

This function reads attributes from sysfs to fill in the required information.

References vlib_adapter_ident::host, and vlib_adapter::ident.

Referenced by HBA_GetPortStatistics().

◆ sysfs_getUnitsFromPort()

int sysfs_getUnitsFromPort ( struct vlib_port * port)

Get unit configuration information for a port.

Parameters
*portfor which unit configuration is received
Returns
  • -1 on error
  • 0 on success.
Locks:
vlib_data.mutex must be held

This function creates and reads private configuration events for all configured units of an port. It enlarges the array where unit data is stored and processes the generated configuration events.

References addUnitToRepos(), vlib_unit::channel, vlib_unit::fcLun, getAdapterByHostNo(), vlib_adapter_ident::host, vlib_port::host, vlib_unit::host, vlib_adapter::ident, vlib_unit::lun, vlib_port::name, vlib_unit::sg_dev, vlib_adapter_ident::sysfsPath, and vlib_unit::target.

Referenced by revalidateUnits(), and updateAdapter().