Apparatus and method for buffer management for receive segment coalescing
US11805081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2020 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Jun 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/9057
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Packets received non-contiguously from a network are processed by a network interface controller by coalescing received packet payload into receive buffers on a receive buffer queue and writing descriptors associated with the receive buffers for a same flow consecutively in a receive completion queue. System performance is optimized by reusing a small working set of provisioned receive buffers to minimize the memory footprint of memory allocated to store packet data. The remainder of the provisioned buffers are in an overflow queue and can be assigned to the network interface controller if the small working set of receive buffers is not sufficient to keep up with the received packet rate. The receive buffer queue can be refilled based on either timers or when the number of buffers in the receive buffer queue is below a configurable low watermark.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.