Fine-grained stream-policing mechanism for automotive ethernet switches

Patent metadata

Field	Value
Publication number	US-9558147-B2
Application number	US-201414303137-A
Country	US
Kind code	B2
Filing date	Jun 12, 2014
Priority date	Jun 12, 2014
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

A system and method for monitoring a plurality of data streams is disclosed. At a first processing stage, a first memory area is associated to an element of a plurality of data streams. Upon arrival of a frame associated with one of the plurality of data streams, a second memory area is associated to the arrived frame based on the element. In the second memory area, a data indicating an arrival of the arrived frame is recorded and on a successful recording, the frame is forwarded to a second processing stage. An independent process executes at a preselected time interval to erase contents of the first memory area.

First claim

What is claimed is:

1. A method for monitoring a plurality of data streams, comprising:
at a first processing stage, associating a first memory area to an element of a plurality of data streams;
upon arrival of a frame associated with one of the plurality of data streams, associating a second memory area to the arrived frame based on the element;
recording, in the second memory area, a data indicating an arrival of the arrived frame; and
on a successful recording, forwarding the arrived frame to a second processing stage, wherein an independent process executes, at a preselected time interval, to erase contents of the first memory area that correspond to the preselected time interval.

2. The method of claim 1 , wherein the second memory area is a part of the first memory area.

3. The method of claim 1 , wherein the first memory area is bigger than the second memory area.

4. The method of claim 1 , wherein the independent process erases contents of the first memory area and the second memory area.

5. The method of claim 1 , wherein the element of the plurality of data streams is a selected attribute that is common to the plurality of data streams.

6. The method of claim 1 , wherein the preselected time interval is configurable by a user.

7. A network switch, comprising:
a processor,
a memory;
a first software program stored in the memory, wherein the first software program, when executed by the processor, performs an operation, the operation includes: at a first processing stage, associating a first memory area to an element of a plurality of data streams; upon detecting an arrival of a frame associated with one of the plurality of data streams, associating a second memory area to the arrived frame based on the element; recording in the second memory area, a data indicating an arrival of the arrived frame; on a successful recording, forwarding the frame to a second processing stage;
a second software program stored in the memory, wherein the second software program, when executed by the processor at a preselected time interval, erases contents of the first memory area that correspond to the preselected time interval.

8. The network switch of claim 7 , wherein the second memory area is a part of the first memory area.

9. The network switch of claim 7 , wherein the first memory area is bigger than the second memory area.

10. The network switch of claim 7 , wherein the independent process erases contents of the first memory area and the second memory area.

11. The network switch of claim 7 , wherein the element of the plurality of data streams is a selected attribute that is common to the plurality of data streams.

12. The network switch of claim 7 , wherein the preselected time interval is configurable by a user.

13. A method for monitoring a plurality of data streams, comprising:
at a first processing stage, associating a memory area to an element of a plurality of data streams;
upon arrival of a first frame associated with a first stream in the plurality of data streams, associating a first part of the memory area to the arrived first frame based on the element;
recording in the first part, a first data indicating an arrival of the arrived first frame and on a successful recording, forwarding the first frame to a second processing stage;
upon arrival of a second frame associated with a second stream in the plurality of data streams, associating a second part of the memory area to the arrived second frame based on the element;
recording in the second part, a second data indicating an arrival of the arrived second frame and on a successful recording, forwarding the second frame to the second processing stage; and
associating a first independent process with the first part and a second independent process with the second part, wherein the first independent process and the second independent process execute at preselected time intervals to erase contents of the first part and the second part that respectively correspond to the preselected time intervals.

14. The method of claim 13 , further comprising:
raising an exception if the recording of the first frame in the first part fails.

15. The method of claim 13 , wherein the recording fails when all memory locations of the memory area are occupied.

16. The method of claim 13 , wherein the element of the plurality of data streams is a selected attribute that is common to the plurality of data streams.

17. The method of claim 14 , wherein the exception is handled by marking the first frame “out-of-policy”.

Assignees

• Nxp Bv

Inventors

• Concer Nicola
• Pandey Sujan
• Vermeulen Hubertus Gerardus Hendrikus

Classifications

• H04L47/2441

  relying on flow classification, e.g. using integrated services [IntServ] · CPC title

• H04L49/351

  for local area network [LAN], e.g. Ethernet switches · CPC title

• H04L49/90 Primary

  Buffering arrangements · CPC title

• G06F15/167 Primary

  using a common memory, e.g. mailbox · CPC title