Ching Chang Yu

US Patent:

8131895, Mar 6, 2012

Filed:

Apr 5, 2010

Appl. No.:

12/754495

Inventors:

Steven L. Pope - Costa Mesa CA, US
David Riddoch - Cambridge, GB
Ching Yu - Santa Clara CA, US
Derek Roberts - Cambridge, GB

Assignee:

Solarflare Communications, Inc. - Irvine CA

International Classification:

G06F 5/00
H03K 19/00

US Classification:

710 52, 326 56

Abstract:

Method of managing interaction between a host subsystem and a peripheral device. Roughly described, the peripheral device writes an event into an individual event queue, and in conjunction therewith, also writes a wakeup event into an intermediary event queue. The wakeup event identifies the individual event queue. The host subsystem, in response to retrieval of the wakeup event from the intermediary event queue, activates an individual event handler to consume events from the individual event queue.

US Patent:

20110246489, Oct 6, 2011

Filed:

Jun 16, 2011

Appl. No.:

13/162421

Inventors:

Steve L. Pope - Costa Mesa CA, US
Derek Roberts - Cambridge, GB
David J. Riddoch - Huntingdon, GB
Ching Yu - Santa Clara CA, US
John Mingyung Chiang - San Jose CA, US
Der-Ren Chu - San Jose CA, US

Assignee:

SOLARFLARE COMMUNICATIONS, INC. - Irvine CA

International Classification:

G06F 17/30

US Classification:

707754, 707E17005, 707E17059

Abstract:

Roughly described, a network interface device is assigned a maximum extent-of-search. A hash function is applied to the header information of each incoming packet, to generate a hash code for the packet. The hash code designates a particular subset of the table within which the particular header information should be found, and an iterative search is made within that subset. If the search locates a matching entry before the search limit is exceeded, then the incoming data packet is delivered to the receive queue identified in the matching entry. But if the search reaches the search limit before a matching entry is located, then device delivers the packet to a default queue, such as a kernel queue, in the host computer system. The kernel is then responsible for delivering the packet to the correct endpoint.

US Patent:

20140059221, Feb 27, 2014

Filed:

Feb 12, 2013

Appl. No.:

13/765579

Inventors:

Steve L. Pope - Costa Mesa CA, US
David J. Riddoch - Huntingdon, GB
Ching Yu - Santa Clara CA, US
Derek Roberts - Cambridge, GB

Assignee:

SOLARFLARE COMMUNICATIONS, INC. - Irvine CA

International Classification:

H04L 29/06
H04L 12/863

US Classification:

709225

Abstract:

Roughly described, a network interface device receiving data packets from a computing device for transmission onto a network, the data packets having a certain characteristic, transmits the packet only if the sending queue has authority to send packets having that characteristic. The data packet characteristics can include transport protocol number, source and destination port numbers, source and destination IP addresses, for example. Authorizations can be programmed into the NIC by a kernel routine upon establishment of the transmit queue, based on the privilege level of the process for which the queue is being established. In this way, a user process can use an untrusted user-level protocol stack to initiate data transmission onto the network, while the NIC protects the remainder of the system or network from certain kinds of compromise.