公开(公告)号：US11310159B2

公开(公告)日：2022-04-19

申请号：US16942988

申请日：2020-07-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dexian Su

IPC: H04L12/801 ,  G06F9/455 ,  G06F13/28 ,  H04L12/825 ,  H04L12/833 ,  H04L12/933 ,  H04L12/861 ,  H04L47/12 ,  H04L47/11 ,  H04L47/25 ,  H04L47/31 ,  H04L49/103 ,  H04L49/90

Abstract: A packet sending method is applied to a data transmission system and comprising: receiving, by a network interface card of a second device, a first packet that is from a first QP of a first device and that is forwarded by using a switch; obtaining, by the network interface card of the second device, an instant rate of the first QP and a maximum sending rate of the first QP; determining, by the network interface card of the second device, an adjustment rate of the first QP based on the instant rate of the first QP and the maximum sending rate of the first QP; sending, by the network interface card of the second device, a congestion notification packet to the first device, where the congestion notification packet carries the adjustment rate of the first QP.

公开(公告)号：US20200322466A1

公开(公告)日：2020-10-08

申请号：US16909414

申请日：2020-06-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hua Yang ,  Chunzhi He ,  Lei Cui ,  Dexian Su

IPC: H04L29/08 ,  G06F12/1081 ,  H04L12/46 ,  H04L1/08 ,  H04L1/16 ,  H04L12/855

Abstract: A data transmission method includes encapsulating, by a first device, first target data into N remote direct memory access (RDMA) packets according to an RDMA protocol, sequentially sending, by the first device, the N RDMA packets to the second device according to a packet sequence number (PSN) sequence of the N RDMA packets, where each of the N RDMA packets carries a first data write address, and the first data write address is an address for writing data in each of the N RDMA packets into the second device such that the second device directly obtains the first data write address in each RDMA packet from the RDMA packet, and writes the target data into storage space corresponding to the first data write address.

公开(公告)号：US10083141B2

公开(公告)日：2018-09-25

申请号：US15885507

申请日：2018-01-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dexian Su

IPC: G06F13/40 ,  G06F13/42 ,  G06F9/44 ,  G06F9/4401

CPC classification number: G06F13/4022 ,  G06F9/4403 ,  G06F13/38 ,  G06F13/4282 ,  G06F2213/0016 ,  G06F2213/0026

Abstract: Embodiments of the present invention provide a method for accessing an endpoint device in a computer system and a computer system. According to the present invention, an endpoint proxy device establishes a correspondence between a first address, of an endpoint device, in the computing subsystem and a second address, of the endpoint device, in the management subsystem, and when receiving a first access request sent by a management controller to the endpoint device, generates, according to the correspondence, a second access request that carries the first address, of the endpoint device, in the computing subsystem, and sends the second access request to the endpoint device. Therefore, an endpoint device access request of the management controller is sent to the endpoint device, an operation does not need to depend on an operating system, and maintainability in managing the endpoint device is improved.

公开(公告)号：US20180225246A1

公开(公告)日：2018-08-09

申请号：US15885507

申请日：2018-01-31

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Dexian Su

IPC: G06F13/40 ,  G06F13/42 ,  G06F9/4401

CPC classification number: G06F13/4022 ,  G06F9/4403 ,  G06F13/38 ,  G06F13/4282 ,  G06F2213/0016 ,  G06F2213/0026

Abstract: Embodiments of the present invention provide a method for accessing an endpoint device in a computer system and a computer system. According to the present invention, an endpoint proxy device establishes a correspondence between a first address, of an endpoint device, in the computing subsystem and a second address, of the endpoint device, in the management subsystem, and when receiving a first access request sent by a management controller to the endpoint device, generates, according to the correspondence, a second access request that carries the first address, of the endpoint device, in the computing subsystem, and sends the second access request to the endpoint device. Therefore, an endpoint device access request of the management controller is sent to the endpoint device, an operation does not need to depend on an operating system, and maintainability in managing the endpoint device is improved.

公开(公告)号：US20140122769A1

公开(公告)日：2014-05-01

申请号：US14144328

申请日：2013-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dexian Su ,  Yimin Yao ,  Jing Wang

IPC: G06F13/40

CPC classification number: G06F13/4022 ,  G06F13/4027 ,  G06F13/4282 ,  G06F2213/0026 ,  H04L49/35

Abstract: Embodiments of the present invention disclose a peripheral component interconnect express interface control unit. The unit includes a P2P module, configured to receive a first TLP from a RC or an EP and forward the first TLP to a reliable TLP transmission RTT module for processing. A reliable TLP transmission module is configured to determine, according to the received first TLP, sending links connected to active and standby PCIE switching units, and send the first TLP to the active and standby PCIE switching units through the sending links at the same time. A destination PCIE interface controller of the first TLP selectively receives the first TLP forwarded by the active and standby PCIE switching units and sends the first TLP to a destination EP or a destination RC. Thereby, reliable transmission of a TLP is implemented in a case of a PCIE switching dual-plane networking connection.

Abstract translation: 本发明的实施例公开了一种外围组件互连快速接口控制单元。 该单元包括P2P模块，用于从RC或EP接收第一TLP，并将第一TLP转发到可靠的TLP传输RTT模块进行处理。 可靠的TLP传输模块被配置为根据接收到的第一TLP确定连接到主用和备用PCIE交换单元的链路，并且通过发送链路同时将第一TLP发送到主用和备用PCIE交换单元。 第一TLP的目的地PCIE接口控制器选择性地接收由主用和备用PCIE交换单元转发的第一TLP，并将第一TLP发送到目的地EP或目的地RC。 因此，在PCIE交换双平面网络连接的情况下，实现TLP的可靠传输。