公开(公告)号：US20250016100A1

公开(公告)日：2025-01-09

申请号：US18763556

申请日：2024-07-03

Applicant: Google LLC

Inventor： Srinivas Vaduvatha ,  Hassan Mohamed Gamal Hassan Wassel ,  Ye Tang ,  Sarin Thomas ,  Rakesh Gautam ,  Prashant Chandra ,  Anupam Jain

IPC: H04L47/122 ,  H04L47/125

Abstract: A custom processor core is provided, wherein the custom processor core may be used for congestion control in reliable transport protocols. The hardware architecture of the custom processor core allows for custom instructions, special register sets, and datapath enhancements for accelerating congestion control algorithms to achieve higher performance.

公开(公告)号：US20230393987A1

公开(公告)日：2023-12-07

申请号：US17834018

申请日：2022-06-07

Applicant: Google LLC

Inventor： Jiazhen Zheng ,  Srinivas Vaduvatha ,  Hugh McEvoy Walsh ,  Prashant R. Chandra ,  Abhishek Agarwal ,  Weihuang Wang ,  Weiwei Jiang

IPC: G06F12/0895 ,  G06F12/0864 ,  G06F12/121

CPC classification number: G06F12/0895 ,  G06F12/0864 ,  G06F12/121

Abstract: A packet cache system includes a cache memory allocator for receiving a memory address corresponding to a non-cache memory and allocated to a packet, and associating the memory address with a cache memory address; a hash table for storing the memory address and the cache memory address, with the memory address as a key and the cache memory address as a value; a cache memory for storing the packet at a location indicated by the cache memory address; and an eviction engine for determining one or more cached packets to remove from the cache memory and place in the non-cache memory when occupancy of the cache memory is high.

公开(公告)号：US20230062889A1

公开(公告)日：2023-03-02

申请号：US17553387

申请日：2021-12-16

Applicant: Google LLC

Inventor： Weihuang Wang ,  Srinivas Vaduvatha ,  Xiaoming Wang ,  Gurushankar Rajamani ,  Abhishek Agarwal ,  Jiazhen Zheng ,  Prashant Chandra

IPC: H04L67/568 ,  H04L49/00 ,  H04L69/326 ,  G06F16/2455

Abstract: An application specific integrated circuit (ASIC) is provided for reliable transport of packets. The network interface card may include a reliable transport accelerator (RTA). The RTA may include a cache lookup database. The RTA may be configured to determine, from a received data packet, a connection identifier and query the cache lookup database for a cache entry corresponding to a connection context having the connection identifier. In response to the query, the RTA may receive a cache hit or a cache miss.

公开(公告)号：US12216587B2

公开(公告)日：2025-02-04

申请号：US18583341

申请日：2024-02-21

Applicant: Google LLC

Inventor： Jiazhen Zheng ,  Srinivas Vaduvatha ,  Hugh McEvoy Walsh ,  Prashant R. Chandra ,  Abhishek Agarwal ,  Weihuang Wang ,  Weiwei Jiang

IPC: G06F12/0895 ,  G06F12/0864 ,  G06F12/121

Abstract: A packet cache system includes a cache memory allocator for receiving a memory address corresponding to a non-cache memory and allocated to a packet, and associating the memory address with a cache memory address; a hash table for storing the memory address and the cache memory address, with the memory address as a key and the cache memory address as a value; a cache memory for storing the packet at a location indicated by the cache memory address; and an eviction engine for determining one or more cached packets to remove from the cache memory and place in the non-cache memory when occupancy of the cache memory is high.

公开(公告)号：US12164439B1

公开(公告)日：2024-12-10

申请号：US18327962

申请日：2023-06-02

Applicant: Google LLC

Inventor： Chandan Muddamsetty ,  Jiazhen Zheng ,  Weiwei Jiang ,  Shivang Ghetia ,  Abhishek Agarwal ,  Srinivas Vaduvatha

IPC: G06F12/12 ,  G06F12/123 ,  G06F12/126

Abstract: Aspects of the disclosure are directed to a packet cache eviction engine for reliable transport protocols of a network. The packet cache eviction engine can manage on-chip cache occupancy by evicting lower priority packets to off-chip memory and ensuring that higher priority packets are kept on-chip to achieve higher performance and lower latency in processing packets in the network.

公开(公告)号：US11979476B2

公开(公告)日：2024-05-07

申请号：US17961669

申请日：2022-10-07

Applicant: Google LLC

Inventor： Abhishek Agarwal ,  Weihuang Wang ,  Weiwei Jiang ,  Srinivas Vaduvatha ,  Jiazhen Zheng

IPC: H04L67/61 ,  H04L67/55

CPC classification number: H04L67/61 ,  H04L67/55

Abstract: Aspects of the disclosure are directed to a high performance connection scheduler for reliable transport protocols in data center networking. The connection scheduler can handle enqueue events, dequeue events, and update events. The connection scheduler can include a connection queue, scheduling queue, and quality of service arbiter to support scheduling a large number of connections at a high rate.

公开(公告)号：US20240048277A1

公开(公告)日：2024-02-08

申请号：US17879853

申请日：2022-08-03

Applicant: Google LLC

Inventor： Yuliang Li ,  Hassan Mohamed Gamal Hassan Wassel ,  Behnam Montazeri ,  Weihuang Wang ,  Srinivas Vaduvatha ,  Nandita Dukkipati ,  Prashant R. Chandra ,  Masoud Moshref Javadi

IPC: H04L1/16 ,  H04L1/18 ,  H04L43/106

CPC classification number: H04L1/1671 ,  H04L1/189 ,  H04L43/106

Abstract: The technology is directed to the use of a bitmap generated at a receiver to track the status of received packets sent by a transmitter. The technology may include a network device including an input port, output port, and circuitry. The circuitry may generate a transmitter bitmap that tracks each data packet sent to another network device. The circuitry of the network device may receive, from the other network device, a receiver bitmap that identifies each data packet that is received and not received from the network device. The circuitry may then determine which data packets to retransmit by comparing the transmitter bitmap to the receiver bitmap.

公开(公告)号：US11463547B2

公开(公告)日：2022-10-04

申请号：US16819327

申请日：2020-03-16

Applicant: Google LLC

Inventor： Weihuang Wang ,  Prashant Chandra ,  Srinivas Vaduvatha

IPC: H04L29/06 ,  H04L67/55 ,  H04L1/18

Abstract: A communication protocol system is provided for reliable transport of packets. In this regard, an initiator entity may determine that outgoing data is to be transmitted to a target entity. The initiator entity may transmit, to the target entity, a solicited push request requesting the outgoing data to be placed at the target entity. In response to the solicited push request, the initiator entity may receive a push grant from the target entity. In response to the push grant, the initiator entity may transmit to the target entity the outgoing data to be placed at the target entity.

公开(公告)号：US12184417B2

公开(公告)日：2024-12-31

申请号：US17879853

申请日：2022-08-03

Applicant: Google LLC

Inventor： Yuliang Li ,  Hassan Mohamed Gamal Hassan Wassel ,  Behnam Montazeri ,  Weihuang Wang ,  Srinivas Vaduvatha ,  Nandita Dukkipati ,  Prashant R. Chandra ,  Masoud Moshref Javadi

IPC: H04L1/1607 ,  H04L1/1867 ,  H04L43/106

Abstract: The technology is directed to the use of a bitmap generated at a receiver to track the status of received packets sent by a transmitter. The technology may include a network device including an input port, output port, and circuitry. The circuitry may generate a transmitter bitmap that tracks each data packet sent to another network device. The circuitry of the network device may receive, from the other network device, a receiver bitmap that identifies each data packet that is received and not received from the network device. The circuitry may then determine which data packets to retransmit by comparing the transmitter bitmap to the receiver bitmap.

公开(公告)号：US12132802B2

公开(公告)日：2024-10-29

申请号：US17553387

申请日：2021-12-16

Applicant: Google LLC

Inventor： Weihuang Wang ,  Srinivas Vaduvatha ,  Xiaoming Wang ,  Gurushankar Rajamani ,  Abhishek Agarwal ,  Jiazhen Zheng ,  Prashant Chandra

IPC: H04L67/568 ,  G06F16/2455 ,  H04L49/00 ,  H04L69/326

CPC classification number: H04L67/568 ,  G06F16/24552 ,  H04L49/3063 ,  H04L69/326

Abstract: An application specific integrated circuit (ASIC) is provided for reliable transport of packets. The network interface card may include a reliable transport accelerator (RTA). The RTA may include a cache lookup database. The RTA may be configured to determine, from a received data packet, a connection identifier and query the cache lookup database for a cache entry corresponding to a connection context having the connection identifier. In response to the query, the RTA may receive a cache hit or a cache miss.