公开(公告)号：US10592322B1

公开(公告)日：2020-03-17

申请号：US15634696

申请日：2017-06-27

Applicant: Amazon Technologies, Inc.

Inventor： Kiran Kalkunte Seshadri ,  Sundeep Amirineni ,  Nafea Bshara ,  Asif Khan

IPC: G06F11/00 ,  G06F11/07 ,  G06F11/30 ,  G06F11/34 ,  G06F11/32

Abstract: Disclosed herein are techniques for preventing or minimizing completion timeout errors on a computer device. An apparatus includes a processing logic circuit configured to perform transactions requested by a requester device, and a timeout prevention logic coupled to the processing logic circuit. The timeout prevention logic includes a timeout logic and a moderation logic. The timeout logic is configured to, when the processing logic circuit fails to complete a particular transaction requested by the requester device within a reconfigurable time period, generate a timeout event and complete the particular requested transaction. The moderation logic is configured to determine a number of timeout events generated by the timeout logic during a monitoring time period, and set the reconfigurable time period based on the number of timeout events generated by the timeout logic during the monitoring time period.

公开(公告)号：US10521365B2

公开(公告)日：2019-12-31

申请号：US14872964

申请日：2015-10-01

Applicant: Amazon Technologies, Inc.

Inventor： Nafea Bshara ,  Adi Habusha ,  Guy Nakibly ,  Georgy Machulsky

IPC: G06F13/00 ,  G06F13/10 ,  G06F13/24 ,  G06F13/42 ,  G06F9/50

Abstract: Techniques for emulating a configuration space by a peripheral device may include receiving a configuration access request, determining that the configuration access request is for a configuration space other than a native configuration space of the peripheral device, and retrieving an emulated configuration from an emulated configuration space. The configuration access request can then be serviced by using the emulated configuration.

公开(公告)号：US10509764B1

公开(公告)日：2019-12-17

申请号：US15164601

申请日：2016-05-25

Applicant: Amazon Technologies, Inc.

Inventor： Erez Izenberg ,  Leah Shalev ,  Nafea Bshara ,  Guy Nakibly ,  Georgy Machulsky

IPC: G06F15/167 ,  H04L29/06 ,  G06F16/22

Abstract: Apparatus and methods are disclosed herein for remote, direct memory access (RDMA) technology that enables direct memory access from one host computer memory to another host computer memory over a physical or virtual computer network according to a number of different RDMA protocols. In one example, a method includes receiving remote direct memory access (RDMA) packets via a network adapter, deriving a protocol index identifying an RDMA protocol used to encode data for an RDMA transaction associated with the RDMA packets, applying the protocol index to a generate RDMA commands from header information in at least one of the received RDMA packets, and performing an RDMA operation using the RDMA commands.

公开(公告)号：US20190364136A1

公开(公告)日：2019-11-28

申请号：US16435266

申请日：2019-06-07

Applicant: Amazon Technologies, Inc.

Inventor： Ofer Naaman ,  Erez Izenberg ,  Nafea Bshara

IPC: H04L29/06 ,  H04L12/851 ,  H04L12/801

Abstract: A system, comprising: a configurable parser that comprises one or more configurable parsing engines, wherein the configurable parser is arranged to receive a packet and to extract from the packet headers associated with a set of protocols that comprises at least one protocol; a packet type detection unit that is arranged to determine a type of the packet in response to the set of protocols; and a configurable data integrity unit that comprises a configuration unit and at least one configurable data integrity engine; wherein the configuration unit is arranged to configure the at least one configurable data integrity engine according to the set of protocols; and wherein the at least one configurable data integrity engine is arranged to perform data integrity processing of the packet to provide at least one data integrity result

公开(公告)号：US10474359B1

公开(公告)日：2019-11-12

申请号：US15445516

申请日：2017-02-28

Applicant: Amazon Technologies, Inc.

Inventor： Thomas A. Volpe ,  Nafea Bshara

IPC: G06F12/14 ,  G06F3/06 ,  G06F12/1009 ,  G06F12/1027

Abstract: Disclosed herein are techniques for reducing the number of write operations performed to a storage-class memory in a virtualized environment. In one embodiment, when a memory page is de-allocated from a virtual machine, the memory page and/or the subpages of the memory page are marked as “trimmed” in a control table such that any read to the memory page or subpages is denied, and no physical memory initialization is performed to the memory page or subpages. A de-allocated memory page or subpage is only initialized when it is reallocated and is to be written to by the virtual machine to which the memory page is reallocated.

公开(公告)号：US10459875B2

公开(公告)日：2019-10-29

申请号：US15360853

申请日：2016-11-23

Applicant: Amazon Technologies, Inc.

Inventor： Erez Izenberg ,  Leah Shalev ,  Georgy Machulsky ,  Nafea Bshara

IPC: H04L29/08 ,  G06F15/173 ,  G06F3/06

Abstract: According to an embodiment of the invention there may be provided a method for hybrid remote direct memory access (RDMA), the method may include: (i) receiving, by a first computer, a packet that was sent over a network from a second computer; wherein the packet may include data and metadata; (ii) determining, in response to the metadata, whether the data should be (a) directly written to a first application memory of the first computer by a first hardware accelerator of the first computer; or (b) indirectly written to the first application memory; (iii) indirectly writing the data to the first application memory if it determined that the data should be indirectly written to the first application memory; (iv) if it determined that the data should be directly written to the first application memory then: (iv.a) directly writing, by the first hardware accelerator the data to the first application memory without writing the data to any buffer of the operating system; and (iv.b) informing a first RDMA software module, by the first hardware accelerator, that the data was directly written to the first application memory; and (v) notifying, by the first RDMA software module, a second computer about a completion of an RDMA transaction during which the data was directly written to the first application memory.

公开(公告)号：US20190294328A1

公开(公告)日：2019-09-26

申请号：US16435372

申请日：2019-06-07

Applicant: Amazon Technologies, Inc.

Inventor： Raviprasad Venkatesha Murthy Mummidi ,  Matthew Shawn Wilson ,  Anthony Nicholas Liguori ,  Nafea Bshara ,  Saar Gross ,  Jaspal Kohli

IPC: G06F3/06 ,  G06F12/14 ,  G06F13/40 ,  G06F13/20

Abstract: A peripheral device may implement storage virtualization for non-volatile storage devices connected to the peripheral device. A host system connected to the peripheral device may host one or multiple virtual machines. The peripheral device may implement different virtual interfaces for the virtual machines or the host system that present a storage partition at a non-volatile storage device to the virtual machine or host system for storage. Access requests from the virtual machines or host system are directed to the respective virtual interface at the peripheral device. The peripheral device may perform data encryption or decryption, or may perform throttling of access requests. The peripheral device may generate and send physical access requests to perform the access requests received via the virtual interfaces to the non-volatile storage devices. Completion of the access requests may be indicated to the virtual machines via the virtual interfaces.

公开(公告)号：US10409744B1

公开(公告)日：2019-09-10

申请号：US15251877

申请日：2016-08-30

Applicant: Amazon Technologies, Inc.

Inventor： Saar Gross ,  Said Bshara ,  Adi Habusha ,  Nafea Bshara ,  Ronen Shitrit

IPC: G06F1/32 ,  G06F13/24 ,  G06F13/42 ,  G06F1/3287 ,  G06F1/3206 ,  G06F1/3296 ,  G06F1/3293

Abstract: A processor in a peripheral device can include a wait-for-event mechanism, through which the processor can enter low-power mode and be woken from lower-power mode with an event. Using an event, rather than an interrupt, allows the processor to wake without the latency incurred by an interrupt handling routine. In various implementations, the processor may be configured to execute a sequence of instructions that include a wait-for-event instruction. The wait-for-event instruction can be called when the processor is idle. The wait-for-event instruction may initiate a low-power mode for the processor, wherein the processor suspends executing the sequence of instructions. The processor may further be configured to receive, at an event input, an event signal. The event signal may cause the processor to exit the low-power mode and to resume executing the sequence of instructions from the point at which the processor suspended executing the sequence of instructions.

公开(公告)号：US10318162B2

公开(公告)日：2019-06-11

申请号：US15279352

申请日：2016-09-28

Applicant: Amazon Technologies, Inc.

Inventor： Raviprasad Venkatesha Murthy Mummidi ,  Matthew Shawn Wilson ,  Anthony Nicholas Liguori ,  Nafea Bshara ,  Saar Gross ,  Jaspal Kohli

IPC: G06F13/00 ,  G06F3/06 ,  G06F12/14 ,  G06F13/20 ,  G06F13/40

Abstract: A peripheral device may implement storage virtualization for non-volatile storage devices connected to the peripheral device. A host system connected to the peripheral device may host one or multiple virtual machines. The peripheral device may implement different virtual interfaces for the virtual machines or the host system that present a storage partition at a non-volatile storage device to the virtual machine or host system for storage. Access requests from the virtual machines or host system are directed to the respective virtual interface at the peripheral device. The peripheral device may perform data encryption or decryption, or may perform throttling of access requests. The peripheral device may generate and send physical access requests to perform the access requests received via the virtual interfaces to the non-volatile storage devices. Completion of the access requests may be indicated to the virtual machines via the virtual interfaces.

公开(公告)号：US20190173789A1

公开(公告)日：2019-06-06

申请号：US16204998

申请日：2018-11-29

Applicant: Amazon Technologies, Inc.

Inventor： Leah Shalev ,  Brian William Barrett ,  Nafea Bshara ,  Georgy Machulsky

IPC: H04L12/741

Abstract: Provided are systems and methods for connection establishment over a network that does not require a user application to establish an explicit connection with a target application. In some implementations, provided is an apparatus configured to communicate with a network and a host device. The apparatus may receive a message and destination information associated with the message from the host device. The apparatus may further determine, using the destination information, a transport context from a plurality of transport contexts. The transport context may include a state of a connection with a destination on the network. The destination on the network may be associated with the destination information.