DeviceAttribute

java.lang.Object
- com.ibm.net.rdma.jverbs.verbs.DeviceAttribute

```
public class DeviceAttribute
extends java.lang.Object
```
Defines various attributes associated with a device. Referred from RDMA programming manual by mellanox.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class DeviceAttribute.AtomicLimit
Defines various supported atomic operations constants.

Nested Classes
Modifier and Type	Class and Description
`static class`	`DeviceAttribute.AtomicLimit` Defines various supported atomic operations constants.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`DeviceAttribute.AtomicLimit`	`getAtomicCap()` Determine whether the device can support atomic operations.
`int`	`getDeviceCapFlags()` Obtain information about the supported capabilities of the device.
`java.lang.String`	`getFirmwareVersion()` Get a NULL terminated string which describes the firmware version of the RDMA device
`int`	`getHardwareVersion()` Obtain the hardware version of the device, as supplied by the vendor.
`short`	`getLocalCaAckDelay()` Get the Local CA ACK Delay.
`int`	`getMaxAh()` Get the maximum number of AHs supported by this device
`int`	`getMaxCompletionQueue()` Get the maximum number of CQs supported by this device
`int`	`getMaxCompletionQueueEvents()` Get the maximum number of entries in each CQ supported by this device
`int`	`getMaxEe()` Get the maximum number of EE contexts supported by this device.
`int`	`getMaxEeInitRdAtom()` If supported by this device, get the maximum depth per EEC for initiation of RDMA read & atomic operations.
`int`	`getMaxEeRdAtom()` Get the maximum number of RDMA reads & atomic operations that can be outstanding per EEC with this device as the target, if such are supported
`int`	`getMaxFmr()` Get the maximum number of FMRs supported by this device.
`int`	`getMaxMapPerFmr()` Get the maximum number of maps per FMR supported by this device.
`int`	`getMaxMcastGrp()` Get the maximum number of multicast groups supported by this device.
`int`	`getMaxMcastQpAttach()` Get the maximum number of QPs per multicast group supported by this device.
`int`	`getMaxMemoryRegion()` Get the maximum number of MRs supported by this device
`long`	`getMaxMemoryRegionSize()` Get the size (in bytes) of the largest contiguous memory block that can be registered by this device
`int`	`getMaxMw()` Get the maximum number of MWs supported by this device.
`int`	`getMaxPkeys()` Get the maximum number of partitions supported by this device
`int`	`getMaxProtectionDomains()` Get the maximum number of PDs supported by this device
`int`	`getMaxQpInitRdAtom()` Get the maximum depth per QP for initiation of RDMA read & atomic operations by this device, if such are supported
`int`	`getMaxQpRdAtom()` Get the maximum number of RDMA reads & atomic operations that can be outstanding per QP with this device as the target, if such are supported
`int`	`getMaxQueuePair()` Get the maximum number of QPs, of UD/UC/RC transport types, supported by this device
`int`	`getMaxQueuePairWorkRequest()` Get the maximum number of outstanding work requests on any Send or Receive Queue supported by this device
`int`	`getMaxRawEthernetQp()` Get the maximum number of Raw Ethertype Datagram QPs supported by this device.
`int`	`getMaxRawIpv6Qp()` Get the maximum number of Raw IPv6 Datagram QPs supported by this device.
`int`	`getMaxRdd()` Get the maximum number of RDDs supported by this device.
`int`	`getMaxResRdAtom()` Get the Total maximum number of resources used for RDMA reads & atomic operations by this device as the target, if such are supported
`int`	`getMaxSge()` Get the maximum number of scatter/gather entries per Send or Receive Work Request, in a QP other than RD, supported by this device
`int`	`getMaxSgeRd()` Get the maximum number of scatter/gather entries per Send or Receive Work Request, in an RD QP, supported by this device.
`int`	`getMaxSrq()` Get the maximum number of SRQs supported by this device.
`int`	`getMaxSrqSge()` Get the maximum number of scatter entries per Receive Work Request, in an SRQ, supported by this device
`int`	`getMaxSrqWorkRequest()` Get the maximum number of outstanding work requests in an SRQ supported by this device
`int`	`getMaxTotalMcastQpAttach()` Get the maximum number of total QPs which can be attached to a multicast groups for this device.
`long`	`getNodeGuid()` Get the GUID (in network byte order) associated with the RDMA device
`long`	`getPageSizeLimit()` Get the Memory page sizes supported by this device
`short`	`getPhysicalPortCount()` Get the number of physical ports on this device
`long`	`getSystemImageGuid()` Get the GUID (in network byte order) associated with this RDMA device and other devices which are parts of a single system.
`int`	`getVendorId()` Get the IEEE device's Vendor
`int`	`getVendorPartId()` Get the device's Part ID, as supplied by the Vendor.
`java.lang.String`	`toString()` Get the string representation of device attributes.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Method Detail
  - getAtomicCap
```
public DeviceAttribute.AtomicLimit getAtomicCap()
```
    Determine whether the device can support atomic operations. The support level can be one of the following enumerated values: IBV_ATOMIC_NONE - Atomic operations are not supported at all. IBV_ATOMIC_HCA - Atomicity is guaranteed between QPs on this device only. IBV_ATOMIC_GLOB - Atomicity is guaranteed between this device and any other component, such as CPUs and other devices.
    
    Returns:
    
    the atomicCap
  - getDeviceCapFlags
```
public int getDeviceCapFlags()
```
    Obtain information about the supported capabilities of the device.
    
    Returns:
    
    the deviceCapFlags
  - getFirmwareVersion
```
public java.lang.String getFirmwareVersion()
```
    Get a NULL terminated string which describes the firmware version of the RDMA device
    
    Returns:
    
    the fwVer
  - getHardwareVersion
```
public int getHardwareVersion()
```
    Obtain the hardware version of the device, as supplied by the vendor.
    
    Returns:
    
    the hwVer
  - getLocalCaAckDelay
```
public short getLocalCaAckDelay()
```
    Get the Local CA ACK Delay. This value specifies the maximum expected time interval between the local device receiving a message and the device transmitting the associated ACK or NAK.
    
    Returns:
    
    the localCaAckDelay
  - getMaxAh
```
public int getMaxAh()
```
    Get the maximum number of AHs supported by this device
    
    Returns:
    
    the maxAh
  - getMaxCompletionQueue
```
public int getMaxCompletionQueue()
```
    Get the maximum number of CQs supported by this device
    
    Returns:
    
    the maxCq
  - getMaxCompletionQueueEvents
```
public int getMaxCompletionQueueEvents()
```
    Get the maximum number of entries in each CQ supported by this device
    
    Returns:
    
    the maxCqe
  - getMaxEe
```
public int getMaxEe()
```
    Get the maximum number of EE contexts supported by this device. If RD is not supported by this device, this value is zero
    
    Returns:
    
    the maxEe
  - getMaxEeInitRdAtom
```
public int getMaxEeInitRdAtom()
```
    If supported by this device, get the maximum depth per EEC for initiation of RDMA read & atomic operations.
    
    Returns:
    
    the maxEeInitRdAtom
  - getMaxEeRdAtom
```
public int getMaxEeRdAtom()
```
    Get the maximum number of RDMA reads & atomic operations that can be outstanding per EEC with this device as the target, if such are supported
    
    Returns:
    
    the maxEeRdAtom
  - getMaxFmr
```
public int getMaxFmr()
```
    Get the maximum number of FMRs supported by this device. If FMRs are not supported by this device, this value is zero
    
    Returns:
    
    the maxFmr
  - getMaxMapPerFmr
```
public int getMaxMapPerFmr()
```
    Get the maximum number of maps per FMR supported by this device. If FMRs are not supported by this device, this value is zero
    
    Returns:
    
    the maxMapPerFmr
  - getMaxMcastGrp
```
public int getMaxMcastGrp()
```
    Get the maximum number of multicast groups supported by this device. If unreliable multicast is not supported by this device, this value is zero
    
    Returns:
    
    the maxMcastGrp
  - getMaxMcastQpAttach
```
public int getMaxMcastQpAttach()
```
    Get the maximum number of QPs per multicast group supported by this device. If unreliable multicast is not supported by this device, this value is zero
    
    Returns:
    
    the maxMcastQpAttach
  - getMaxMemoryRegion
```
public int getMaxMemoryRegion()
```
    Get the maximum number of MRs supported by this device
    
    Returns:
    
    the maxMr
  - getMaxMemoryRegionSize
```
public long getMaxMemoryRegionSize()
```
    Get the size (in bytes) of the largest contiguous memory block that can be registered by this device
    
    Returns:
    
    the maxMrSize
  - getMaxMw
```
public int getMaxMw()
```
    Get the maximum number of MWs supported by this device. If MWs are not supported by this device, this value is zero
    
    Returns:
    
    the maxMw
  - getMaxPkeys
```
public int getMaxPkeys()
```
    Get the maximum number of partitions supported by this device
    
    Returns:
    
    the maxPkeys
  - getMaxProtectionDomains
```
public int getMaxProtectionDomains()
```
    Get the maximum number of PDs supported by this device
    
    Returns:
    
    the maxPd
  - getMaxQpInitRdAtom
```
public int getMaxQpInitRdAtom()
```
    Get the maximum depth per QP for initiation of RDMA read & atomic operations by this device, if such are supported
    
    Returns:
    
    the maxQpInitRdAtom
  - getMaxQpRdAtom
```
public int getMaxQpRdAtom()
```
    Get the maximum number of RDMA reads & atomic operations that can be outstanding per QP with this device as the target, if such are supported
    
    Returns:
    
    the maxQpRdAtom
  - getMaxQueuePair
```
public int getMaxQueuePair()
```
    Get the maximum number of QPs, of UD/UC/RC transport types, supported by this device
    
    Returns:
    
    the maxQp
  - getMaxQueuePairWorkRequest
```
public int getMaxQueuePairWorkRequest()
```
    Get the maximum number of outstanding work requests on any Send or Receive Queue supported by this device
    
    Returns:
    
    the maxQpWr
  - getMaxRawEthernetQp
```
public int getMaxRawEthernetQp()
```
    Get the maximum number of Raw Ethertype Datagram QPs supported by this device. If Raw Ethertype Datagram QPs are not supported by this device, this value is zero
    
    Returns:
    
    the maxRawEthyQp
  - getMaxRawIpv6Qp
```
public int getMaxRawIpv6Qp()
```
    Get the maximum number of Raw IPv6 Datagram QPs supported by this device. If Raw IPv6 Datagram QPs are not supported by this device, this value is zero
    
    Returns:
    
    the maxRawIpv6Qp
  - getMaxRdd
```
public int getMaxRdd()
```
    Get the maximum number of RDDs supported by this device. If RD is not supported by this device, this value is zero
    
    Returns:
    
    the maxRdd
  - getMaxResRdAtom
```
public int getMaxResRdAtom()
```
    Get the Total maximum number of resources used for RDMA reads & atomic operations by this device as the target, if such are supported
    
    Returns:
    
    the maxResRdAtom
  - getMaxSge
```
public int getMaxSge()
```
    Get the maximum number of scatter/gather entries per Send or Receive Work Request, in a QP other than RD, supported by this device
    
    Returns:
    
    the maxSge
  - getMaxSgeRd
```
public int getMaxSgeRd()
```
    Get the maximum number of scatter/gather entries per Send or Receive Work Request, in an RD QP, supported by this device. If RD is not supported by this device, this value is zero
    
    Returns:
    
    the maxSgeRd
  - getMaxSrq
```
public int getMaxSrq()
```
    Get the maximum number of SRQs supported by this device. If SRQs are not supported by this device, this value is zero
    
    Returns:
    
    the maxSrq
  - getMaxSrqSge
```
public int getMaxSrqSge()
```
    Get the maximum number of scatter entries per Receive Work Request, in an SRQ, supported by this device
    
    Returns:
    
    the maxSrqSge
  - getMaxSrqWorkRequest
```
public int getMaxSrqWorkRequest()
```
    Get the maximum number of outstanding work requests in an SRQ supported by this device
    
    Returns:
    
    the maxSrqWr
  - getMaxTotalMcastQpAttach
```
public int getMaxTotalMcastQpAttach()
```
    Get the maximum number of total QPs which can be attached to a multicast groups for this device. If unreliable multicast is not supported by this device, this value is zero
    
    Returns:
    
    the maxTotalMcastQpAttach
  - getNodeGuid
```
public long getNodeGuid()
```
    Get the GUID (in network byte order) associated with the RDMA device
    
    Returns:
    
    the nodeGuid
  - getPageSizeLimit
```
public long getPageSizeLimit()
```
    Get the Memory page sizes supported by this device
    
    Returns:
    
    the pageSizeCap
  - getPhysicalPortCount
```
public short getPhysicalPortCount()
```
    Get the number of physical ports on this device
    
    Returns:
    
    the physPortCnt
  - getSystemImageGuid
```
public long getSystemImageGuid()
```
    Get the GUID (in network byte order) associated with this RDMA device and other devices which are parts of a single system. For example: multiple Switch chips in the same Core switch
    
    Returns:
    
    the sysImageGuid
  - getVendorId
```
public int getVendorId()
```
    Get the IEEE device's Vendor
    
    Returns:
    
    the vendorId
  - getVendorPartId
```
public int getVendorPartId()
```
    Get the device's Part ID, as supplied by the Vendor.
    
    Returns:
    
    the vendorPartId
  - toString
```
public java.lang.String toString()
```
    Get the string representation of device attributes.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    the string

Methods inherited from class java.lang.Object

getAtomicCap

getDeviceCapFlags

getFirmwareVersion

getHardwareVersion

getLocalCaAckDelay

getMaxAh

getMaxCompletionQueue

getMaxCompletionQueueEvents

getMaxEe

getMaxEeInitRdAtom

getMaxEeRdAtom

getMaxFmr

getMaxMapPerFmr

getMaxMcastGrp

getMaxMcastQpAttach

getMaxMemoryRegion

getMaxMemoryRegionSize

getMaxMw

getMaxPkeys

getMaxProtectionDomains

getMaxQpInitRdAtom

getMaxQpRdAtom

getMaxQueuePair

getMaxQueuePairWorkRequest

getMaxRawEthernetQp

getMaxRawIpv6Qp

getMaxRdd

getMaxResRdAtom

getMaxSge

getMaxSgeRd

getMaxSrq

getMaxSrqSge

getMaxSrqWorkRequest

getMaxTotalMcastQpAttach

getNodeGuid

getPageSizeLimit

getPhysicalPortCount

getSystemImageGuid

getVendorId

getVendorPartId

toString