The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2024
Filed:
Mar. 18, 2021
Intel Corporation, Santa Clara, CA (US);
Mark Bordogna, Andover, MA (US);
Srinivasan S. Iyengar, Fremont, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Methods and apparatus for data plane control of network time sync protocol in multi-host systems. A network interface controller (NIC) is configured to implement a network data plane that is associated with a software-based control plane implemented in the multi-host system. The NIC includes a primary timer and secondary timers at distributed endpoints such as network ports. The NIC receives network time packets having network timestamps and employs a secondary timer to associate a local timestamp with the packets. The network and local timestamps are compared by a network intellectual property block (network IP) in the data plane datapath to adjust the primary and secondary timer(s) to match the network time. The network IP uses a 2-bit wire protocol to increment and/or decrement the primary and secondary timer(s) that enables the timers to be adjusted with a nanosecond granularity.