PROTOCOL INDEPENDENT WAY FOR DYNAMICALLY SELECTING DATA COMPRESSION METHODS FOR REDIRECTED USB DEVICES

• US 20170034315A1
• Filed: 07/29/2015
• Published: 02/02/2017
• Est. Priority Date: 07/29/2015
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Vajravel, Gokul Thiruchengode
• Granted Patent: US 9,936,049 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 13/4282 on a serial bus, e.g. I2C bus, SPI bus on daisy chain buses G06F13/4247
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

In certain information handling system environments, physical devices connected to a client are redirected to a server or other information handling system. Each of these physical devices will use and occupy network bandwidth, for example, during transmission of a data packet. Dynamically selecting a compression method for the data packet based, at least in part on, the type of data or payload in the data packet may reduce the amount of network bandwidth required by a particular device, for example a USB device that has been redirected.

Claims

1. A method comprising:

receiving at a first information handling system a universal serial bus (USB) data packet to be transmitted, wherein the USB data packet comprises a header and a payload;

determining if compression is enabled;

caching one or more variables associated with a header of the USB data packet;

dynamically selecting a compression method, based, at least in part, on one or more criteria;

compressing the payload;

modifying the header; and

sending the compressed payload and the modified header as a compressed data packet.

2. The method of claim 1, wherein modifying the header comprises setting a compression enabled variable of the header to indicate that compression is enabled.

3. The method of claim 1, wherein modifying the header comprises setting a compression method variable of the header to indicate compression method of the compressed payload.

4. The method of claim 1, wherein determining if compression is enabled comprises determining a value of a user-specified setting.

5. The method of claim 1, wherein the compression method comprises one of LZ4 and JPEG2000.

6. The method of claim 1, wherein selecting the compression method comprises determining a type of data of the payload.

7. The method of claim 1, wherein the cached variables include at least one of USB device type, USB device class, USB request block (URB) control phase, and URB function type.

8. A system comprising:

a first server;

one or more central processing units for processing information of the first server;

a memory of the first server communicatively coupled to the one or more central processing units; and

one or more modules that comprise instructions stored in the memory, the instructions, when executed by the one or more processing units, operable to perform operations comprising;

receiving at a first information handling system a universal serial bus (USB) data packet to be transmitted, wherein the USB data packet comprises a header and a payload;

determining if compression is enabled;

caching one or more variables associated with a header of the USB data packet;

dynamically selecting a compression method, based, at least in part, on one or more criteria;

compressing the payload;

modifying the header; and

sending the compressed payload and the modified header as a compressed data packet.

9. The system of claim 8, wherein modifying the header comprises setting a compression enabled variable of the header to indicate that compression is enabled.

10. The system of claim 8, wherein modifying the header comprises setting a compression method variable of the header to indicate compression method of the compressed payload.

11. The system of claim 8, wherein determining if compression is enabled comprises determining a value of a user-specified setting.

12. The system of claim 8, wherein the compression method comprises one of LZ4 and JPEG2000.

13. The system of claim 8, wherein selecting the compression method comprises determining a type of data of the payload.

14. The system of claim 8, wherein the cached variables include at least one of USB device type, USB device class, USB request block (URB) control phase, and URB function type.

15. One or more computer-readable non-transitory storage media embodying software operable when executed by one or more information handling systems to:

receive at a first information handling system a universal serial bus (USB) data packet to be transmitted, wherein the USB data packet comprises a header and a payload;

determine if compression is enabled;

cache one or more variables associated with a header of the USB data packet;

select, dynamically, a compression method, based, at least in part, on one or more criteria;

compress the payload;

modify the header; and

send the compressed payload and the modified header as a compressed data packet.

16. The media of claim 15, wherein the modify the header step comprises setting a compression enabled variable of the header to indicate that compression is enabled.

17. The media of claim 15, wherein the modify the header step comprises setting a compression method variable of the header to indicate compression method of the compressed payload.

18. The media of claim 15, wherein the determine if compression is enabled step comprises determining a value of a user-specified setting.

19. The media of claim 15, wherein the compression method comprises one of LZ4 and JPEG2000.

20. The media of claim 15, wherein the select the compression method step comprises determining a type of data of the payload.