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Применить Всего найдено 4. Отображено 4.
25-08-2016 дата публикации

QUEUE PAIR STATE TRANSITION SPEEDUP

Номер: US20160248628A1
Автор: Parav K. Pandit, Aravinda Venkatramana, Aniketa Sreedhar, Devesh Sharma, Masoodur Rahman, PANDIT PARAV K, VENKATRAMANA ARAVINDA, SREEDHAR ANIKETA, SHARMA DEVESH, RAHMAN MASOODUR, Pandit Parav K., Venkatramana Aravinda, Sreedhar Aniketa, Sharma Devesh, Rahman Masoodur
Принадлежит:

A computing or controlling apparatus includes a remote direct memory access (RDMA) adapter device. Responsive to an initialized state, a create queue pair adapter device command is provided by a host processing unit. The adapter device processes the command to create a queue pair in the initialized state. Responsive to a ready to send (RTS) state, a queue pair state transition command is provided by the host processing unit. The adapter device processes the queue pair state transition command to transition the queue pair from the initialized state to the ready to send (RTS) state skipping over the ready to receive (RTR) state. However, if the adapter device processes a ready to receive (RTR) in-band RDMA WQE received from the host processing unit, the state of the queue pair transitions from the initialized state to the RTR state. The adapter device then processes a ready to send (RTS) in-band RDMA WQE received from the host processing unit via the queue pair to transition the queue pair from the RTR state to the RTS state. 1. A remote direct memory access (RDMA) network communication adapter device that includes:a storage medium constructed to store an adapter device firmware module that includes a control path module that includes instructions to process adapter device commands provided to the adapter device by a host processing unit in communication with the adapter device via a host bus, the control path module including instructions to process an initialization command to create an RDMA queue pair in an initialized (INIT) state, andan adapter device processing unit that includes at least one adapter device processor constructed to read instructions of the adapter device firmware module from at least one memory and to execute the instructions of the firmware module by using the at least one adapter device processor, the instructions when executed by the at least one adapter device processor perform processes including:responsive to reception of the ...

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Номер записи: 1
28-01-2016 дата публикации

DYNAMIC RDMA QUEUE ON-LOADING

Номер: US20160026604A1
Автор: Pandit Parav K., Rahman Masoodur
Принадлежит:

A remote direct memory access (RDMA) host device having a host operating system and an RDMA network communication adapter device. Responsive to determination of an RDMA on-load event for an RDMA queue used in an RDMA connection, at least one of a user-mode module and the operating system of the host device is used to provide an RDMA on-load notification to the RDMA network communication adapter device. The on-load notification notifies the adapter device of the determination of the on-load event for the RDMA queue, and the determination is performed by at least one of the user-mode module and the operating system. During processing of an RDMA transaction of the RDMA queue in a case where the RDMA on-load event is determined, the operating system is used to perform at least one RDMA sub-process of the RDMA transaction. 1. A host device comprising:a remote direct memory access (RDMA) network communication adapter device to provide remote direct memory access (RDMA) to a remote device; responsive to determination of an RDMA on-load event for an RDMA queue used in an RDMA connection, using at least one of a user-mode module and an operating system of the host device to provide an RDMA on-load notification to the RDMA network communication adapter device notifying the adapter device of the determination of the on-load event for the RDMA queue, the determination being performed by at least one of the user-mode module and the operating system; and', 'during processing of an RDMA transaction of the RDMA queue in a case where the RDMA on-load event is determined, using the operating system to perform at least one RDMA sub-process of the RDMA transaction., 'a host processing unit that includes at least one processor constructed to read and execute instructions of at least one memory, the instructions, when executed by the host processing unit, perform processes including2. The host device of claim 1 ,wherein the RDMA queue is at least one of a send queue (SQ) and a receive ...

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Номер записи: 2
28-01-2016 дата публикации

REGISTRATIONLESS TRANSMIT ONLOAD RDMA

Номер: US20160026605A1
Автор: Pandit Parav K., Rahman Masoodur
Принадлежит:

An RDMA transceiving system in which an operating system of the RDMA transceiving system performs a first sub-process of an RDMA transmission, and an RDMA network communication adapter device of the RDMA transceiving system performs a second sub-process of the RDMA transmission responsive to RDMA transmission information provided by the operating system. The operating system performs the first sub-process responsive to a request that includes a virtual address corresponding to a buffer to be used for the RDMA transmission, and the operating system translates the virtual address into a physical address. The RDMA network communication adapter device performs an RDMA access responsive to the physical address. 1. An information processing apparatus comprising:a remote direct memory access (RDMA) network communication adapter device to provide remote direct memory access (RDMA) to a remote device;at least one processor constructed to execute instructions, the at least one processor in communication with the RDMA network communication adapter device; and responsive to a request for an RDMA transmission, performing at least a first sub-process of the RDMA transmission by using an operating system of the apparatus;', 'providing RDMA transmission information to the RDMA network communication adapter device, the RDMA network communication adapter device performing at least a second sub-process of the RDMA transmission responsive to the RDMA transmission information,', 'wherein the request for the RDMA transmission includes at least a virtual address corresponding to a buffer to be used for the RDMA transmission,', 'wherein the operating system translates the virtual address into a corresponding physical address of a main memory of the apparatus, and', 'wherein the RDMA transmission information includes the translated physical address, and the RDMA network communication adapter device performs an RDMA access responsive to the physical address., 'at least one processor-readable ...

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Номер записи: 3
21-07-2016 дата публикации

TUNNELED REMOTE DIRECT MEMORY ACCESS (RDMA) COMMUNICATION

Номер: US20160212214A1
Автор: Pandit Parav K., Rahman Masoodur, Venkatramana Aravinda
Принадлежит:

Tunneling packets of one or more remote direct memory access (RDMA) unreliable queue pairs of a first adapter device through an RDMA reliable connection (RC) by using RDMA reliable queue context and RDMA unreliable queue context stored in the first adapter device. The RDMA reliable connection is initiated between a first RDMA RC queue pair of the first adapter device and a second RDMA RC queue pair of a second adapter device. The RDMA reliable queue context is for the first RDMA RC queue pair, and the RDMA unreliable queue context is for the one or more RDMA unreliable queue pairs of the first adapter device. 1. An adapter device comprising: remote direct memory access (RDMA) reliable queue context for one RDMA RC queue pair of the adapter device, the RDMA RC queue pair providing a reliable connection between the adapter device and a different adapter device, and', 'RDMA unreliable queue context for one or more RDMA unreliable queue pairs of the adapter device; and, 'an adapter device processing unit storingan RDMA firmware module that includes instructions that when executed by the adapter device processing unit cause the adapter device to initiate the reliable connection between the adapter device and the different adapter device, and tunnel packets of the one or more RDMA unreliable queue pairs through the reliable connection by using the RDMA reliable queue context and the RDMA unreliable queue context.2. The adapter device of claim 1 , wherein the RDMA unreliable queue pairs include at least one of RDMA unreliable connection (UC) queue pairs and RDMA unreliable datagram (UD) queue pairs.3. The adapter device of claim 1 , wherein the reliable queue context includes transport context for all unreliable RDMA traffic between one or more RDMA unreliable queue pairs of the adapter device and one or more RDMA unreliable queue pairs of the different adapter device.4. The adapter device of claim 3 , wherein the transport context includes connection context for the ...

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Номер записи: 4