公开(公告)号：US20180167329A1

公开(公告)日：2018-06-14

申请号：US15377303

申请日：2016-12-13

Applicant: Oracle International Corporation

Inventor： ARVIND SRINIVASAN ,  MARCELINO DIGNUM

IPC: H04L12/851 ,  H04L29/06 ,  H04L12/741

CPC classification number: H04L47/2441 ,  H04L45/54 ,  H04L45/745 ,  H04L45/7453 ,  H04L69/22

Abstract: In accordance with an embodiment, described herein is a system and method for providing a programmable packet classification framework for use in a network device in a high performance network. The packet classification framework can comprise a plurality of hardware-based programmable classification primitives, including a key composition primitive, a key composition rule primitive, a match action logical structure, and a next action primitive. The classification primitives can be logically strung together, with the results from one classification primitive fed into the next one until the processing of a data packet is completed. The classification framework can use a state machine to track states of the data packet processing, and dynamically adjust behaviors of the classification primitives based on the processing states of a data packet. With the programmable classification primitives, the classification framework can recursively parse data packets of a plurality of protocols without requiring any hardware changes.

公开(公告)号：US20180167318A1

公开(公告)日：2018-06-14

申请号：US15377320

申请日：2016-12-13

Applicant: Oracle International Corporation

Inventor： ARVIND SRINIVASAN ,  MARCELINO DIGNUM

IPC: H04L12/749 ,  H04L12/851

CPC classification number: H04L45/741 ,  H04L45/745 ,  H04L47/2441

Abstract: In accordance with an embodiment, described herein is a system and method for partitioning classification resources in a network device in a high performance network. Classification resources can be configured into a plurality of levels of partitions, with one or more hardware-based partitions configured to store flow entries associated with frequently-used or performance-sensitive flows, and a firmware-based partition to access large lookup tables stored in one or more additional memories for classification resource scalability. A lookup key can be used for search for a flow entry match in the hardware-based partitions first. If there is a miss, the lookup key can be presented to the firmware-based partition for further search. Results from the firmware-based level can be dispatched back to a hardware-based parser for further processing. Flow entries can be moved between lookup tables by a partition management block based on utilization of the flow entries.