Avago Technologies General IP (singapore) Pte. Ltd.

Anthony Hurson

Ashwin Kamath

Sujith Arramreddy

Chaitanya Tumuluri

Ravindra Sadanand Shenoy

Jayaram Bhat

James D Butler

Ganesh Boddapati

When interfacing with a host, a networking device can handle a first data like Bulk Data Send. In response to a first doorbell ring, the networking device can read a first queue entry from a send queue in the host. Based on the first queue entry, the networking device can read the first data from a first memory in the host and then output the read first data. The networking device can also handle a second data like Direct Packet Push. The networking device can store a second data received from the host. In response to a second doorbell ring, the networking device can output the second data. The first data and the second data can be associated with first and second queue entries, both on the same send queue in the host. High-throughput and low-latency can be achieved. Small and large data packets can be accommodated.

Direct push operations and gather operations

When interfacing with a host, a networking device can handle a first data like Bulk Data Receive. The networking device can receive the first data and read a first queue entry from a receive queue in the host memory. In response to the read first queue entry, the networking device can write the first data to an unpinned memory in the host memory. The networking device can also handle a second data with a Receive Packet in Ring (RPIR) queue. The networking device can receive the second data and write the second data to a pinned memory in the host memory. The RPIR queue can be separate from or overlaid on the receive queue. High throughput and low-latency operation can be achieved. The use of a RPIR queue can facilitate the efficiency of resource utilization in the reception of data messages.

Low-latency packet receive method for networking devices

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Austin, TX, United States of America

Anthony Hurson