Reliable transport offloaded to network devices

Patent metadata

Field	Value
Publication number	US-12199888-B2
Application number	US-202418425968-A
Country	US
Kind code	B2
Filing date	Jan 29, 2024
Priority date	Feb 3, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

Examples described herein relate to offload reliable transport management to a network interface device and store packets to be resent, based on received packet receipt acknowledgements (ACKs), into one or more kernel space queues that are also accessible in user space.

First claim

The invention claimed is:

1. An apparatus comprising:
at least one processor;
at least one memory comprising instructions stored thereon, that if executed by the at least one processor, cause the at least one processor to:
offload reliable transport management to a network interface device, wherein the reliable transport management is based on quick User Datagram Protocol (UDP) Internet Connections (QUIC) and wherein the network interface device is to perform header split to copy a packet header and a packet payload to different destinations and
based on received packet receipt acknowledgements (ACKs), track packets to be resent, by access to one or more kernel space queues that are also accessible in user space.

2. The apparatus of claim 1 , wherein the at least one memory compris es instructions stored thereon, that if executed by the at least one processor, cause the at least one processor to:
identify descriptors available for reuse into the one or more kernel space queues that are also accessible in user space.

3. The apparatus of claim 1 , wherein content stored in the one or more kernel space queues are also accessible in user space without copying from memory accessible to user space to a memory accessible kernel space.

4. The apparatus of claim 1 , wherein:
a socket is to connect a service with a driver for the network interface device,
the one or more kernel space queues are associated with the socket, and
at least one of the one or more kernel space queues comprises a waiting queue for received packet receipt acknowledgements (ACKs).

5. The apparatus of claim 1 , wherein the one or more kernel space queues are based on an Address Family of an eXpress Data Path (AF_XDP) queue framework.

6. The apparatus of claim 1 , wherein:
at least one of the one or more kernel space queues is to identify one or more packets for which one or more ACKs have been received.

7. The apparatus of claim 1 , wherein the at least one processor is to execute a service that is to request transmission of at least one packet that is subject to receipt of an ACK.

8. The apparatus of claim 1 , comprising the network interface device to transmit at least one packet based on a request from the at least one processor.

9. A non-transitory computer-readable medium comprising instructions stored thereon, that if executed by one or more processors, cause the one or more processors to:
offload reliable transport management to a network interface device, wherein the reliable transport management is based on quick User Datagram Protocol (UDP) Internet Connections (QUIC) and wherein the network interface device is to perform header split to copy a packet header and a packet payload to different destinations.

10. The non-transitory computer-readable medium of claim 9 , comprising instructions stored thereon, that if executed by one or more processors, cause the one or more processors to:
track packets to be resent, based on received packet receipt acknowledgements (ACKs), into one or more kernel space queues that are also accessible in user space, wherein the one or more kernel space queues that are also accessible in user space are to identify descriptors available for reuse.

11. The non-transitory computer-readable medium of claim 10 , wherein:
a socket is to connect a service with a driver for the network interface device,
the one or more kernel space queues are associated with the socket, and
at least one of the one or more kernel space queues comprises a waiting queue for received packet receipt acknowledgements (ACKs).

12. The non-transitory computer-readable medium of claim 10 , wherein:
the one or more kernel space queues are based on an Address Family of an express Data Path (AF_XDP) queue framework.

13. An apparatus comprising:
a network interface device comprising circuitry to perform offloaded reliable transport for packet transmission based on a queue framework comprising one or more kernel space queues that are also accessible in user space, wherein the reliable transport is based on quick User Datagram Protocol (UDP) Internet Connections (QUIC) and wherein the circuitry is to perform header split to copy a packet header and a packet payload to different destinations.

14. The apparatus of claim 13 , wherein the one or more kernel space queues that are also accessible in user space are to track packets to be resent, based on received packet receipt acknowledgements (ACKs).

15. The apparatus of claim 13 , wherein:
the network interface device is to re-transmit a packet based on non-receipt of an acknowledgement (ACK) of packet receipt.

16. The apparatus of claim 13 , wherein:
at least one of the one or more kernel space queues is to identify at least one available descriptor that is available to associated with a received packet.

17. The apparatus of claim 13 , wherein the network interface device comprises circuitry to:
based on receipt of a packet having a sequence number corresponding to a non-received packet sequence number, provide access to one or more packet payloads associated with one or more received packet sequence numbers.

18. The apparatus of claim 13 , wherein the network interface device comprises one or more of: a network interface controller (NIC), a smart NIC, an infrastructure processing unit (IPU), and/or a data processing unit (DPU).

19. The apparatus of claim 13 , comprising a server comprising at least one processor that is to execute a service that is to request transmission of at least one packet that is subject to receipt of an acknowledgement (ACK).

20. The apparatus of claim 13 , comprising a server comprising at least one processor that is to execute a service that is to process at least one payload of at least one packet associated with a received packet sequence number.

Assignees

• Intel Corp

Inventors

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

Classifications

• H04L49/552

  by ensuring the integrity of packets received through redundant connections · CPC title

• H04L1/1841

  Resequencing · CPC title

• H04L47/34 Primary

  ensuring sequence integrity, e.g. using sequence numbers · CPC title

• H04L49/9094

  Arrangements for simultaneous transmit and receive, e.g. simultaneous reading/writing from/to the storage element · CPC title

• H04L47/56

  implementing delay-aware scheduling · CPC title