Google Inc.

Joel Scherpelz

Michael Roger Marty

Daniel Earle Gibson

Christopher Alfeld

Marc De Kruijf

Aspects of the disclosure relate to providing derived keys for connectionless network protocols. The derived key may be provided by receiving, at a host, a remote procedure call (RPC) sent by a remote host in response a request by an application executing on the remote host. The host may generate a derived key from a region key, the region key being associated with an application-specific memory region on the host. The host may transmit the derived key to the remote host.

Derived keys for connectionless network protocols

A computing system dedicates one or more processing units, such as cores, for the purposes of packet processing software, wherein other processing units simultaneously run application software. In some examples, the system uses dynamic load information to dynamically increase and decrease the number of processing units dedicated to packet processing. The system may further include a mechanism for establishing shared-memory regions for interacting with other applications' users. The shared memory mechanisms provide an abstraction of per-application 'command' and 'completion queues'. The system may poll per-application command queues for detecting the arrival of new requests. The mechanism also provides detection of application termination, as well as an ability for an application to expose portions of its address space for the reception and transmission of data. In some examples, the system further includes a framework for executing software-defined handlers inline with threads that run packet processing and transport software.

System and method for hardware-independent RDMA

The present disclosure provides methods and systems to allow user space applications running on different cores to efficiently communicate interrupts between each other without have to enter an OS kernel. In one aspect, a hardware device for delivering inter-processor interrupts is provided. The hardware device includes a memory having a memory space that corresponds to a virtual memory space of a first guest process and a controller coupled to the memory. The controller may be configured to detect when interrupt information is recorded in the memory space. In that regard, the interrupt information is directed to a second guest process associated with a particular CPU core. In response to detecting interrupt information recorded in the memory space, the controller is configured to cause the second guest process to run on a different CPU core without making an operating system call.

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Madison, WI, United States of America

Joel Scherpelz