公开(公告)号：US20240036631A1

公开(公告)日：2024-02-01

申请号：US18038660

申请日：2020-12-24

Applicant: Intel Corporation

Inventor： Liang Ma ,  Ping Yu ,  Fan Zhang ,  Weigang Li ,  Xin Zheng ,  Xiao Long Ye

IPC: G06F1/3296 ,  H04L9/40

CPC classification number: G06F1/3296 ,  H04L63/0428

Abstract: Various systems and methods for implementing protocol state aware power management are described herein. A network interface device for implementing protocol state aware power management includes circuitry to provide a direct memory access interface; medium access control (MAC) circuitry to interface with a network; and control circuitry to: classify packets received at the MAC circuitry as packets used to open network connections or packets used to close network connections; maintain statistics of packets used to open network connections and packets used to close network connections; calculate a power hint based on the statistics of packets used to open connections and packets used to close network connections; and write a receive descriptor to a host memory using the direct memory access interface, the receive descriptor including a power hint field with the power hint, the power hint used by a host processor to scale processor power based on the power hint.

公开(公告)号：US11496419B2

公开(公告)日：2022-11-08

申请号：US17238893

申请日：2021-04-23

Applicant: Intel Corporation

Inventor： Shaopeng He ,  Cunming Liang ,  Jiang Yu ,  Ziye Yang ,  Ping Yu ,  Bo Cui ,  Jingjing Wu ,  Liang Ma ,  Hongjun Ni ,  Zhiguo Wen ,  Changpeng Liu ,  Anjali Singhai Jain ,  Daniel Daly ,  Yadong Li

IPC: H04L47/56 ,  H04L49/9057 ,  H04L47/34 ,  H04L1/18 ,  H04L49/552 ,  H04L49/90

Abstract: Examples described herein relate to a reliable transport protocol for packet transmission using an Address Family of an eXpress Data Path (AF_XDP) queue framework, wherein the AF_XDP queue framework is to provide a queue for received packet receipt acknowledgements (ACKs). In some examples, an AF_XDP socket is to connect a service with a driver for the network device, one or more queues are associated with the AF_XDP socket, and at least one of the one or more queues comprises a waiting queue for received packet receipt ACKs. In some examples, at least one of the one or more queues is to identify one or more packets for which ACKs have been received. In some examples, the network device is to re-transmit a packet identified by a descriptor in the waiting queue based on non-receipt of an ACK associated with the packet from a receiver.

公开(公告)号：US11422944B2

公开(公告)日：2022-08-23

申请号：US16989667

申请日：2020-08-10

Applicant: Intel Corporation

Inventor： Kaijie Guo ,  Weigang Li ,  Junyuan Wang ,  Liang Ma ,  Maksim Lukoshkov ,  Yao Huo

IPC: G06F12/1009 ,  H04L61/2596 ,  G06F12/1027 ,  G06F13/28 ,  G06F13/42

Abstract: Examples herein relate to a system that includes a first memory device; a second memory device; and an input-output memory management unit (IOMMU). The IOMMU can search for a virtual-to-physical address translation entry in a first table for a received virtual address and based on a virtual-to-physical address translation entry for the received virtual address not being present in the first table, search a second table for a virtual-to-physical address translation entry for the received virtual address, wherein the first table is stored in the first memory device and the second table is stored in the second memory device. In some examples, based on a virtual-to-physical address translation entry for the received virtual address not being present in the second table, a page table walk is performed to determine a virtual-to-physical address translation for the received virtual address. In some examples, the first table includes an IO translation lookaside buffer (IOTLB).