公开(公告)号：US20210099391A1

公开(公告)日：2021-04-01

申请号：US16936228

申请日：2020-07-22

Applicant: Apple Inc.

Inventor： CAHYA ADIANSYAH MASPUTRA ,  Eric Tsz Leung Cheng ,  Sandeep Nair ,  Wei Shen

IPC: H04L12/851 ,  H04L12/857 ,  H04L29/08

Abstract: Methods and apparatus for low latency operation in user space networking architectures. In one embodiment, an apparatus configured to enable low latency data transfer is disclosed. The exemplary embodiment provides a multiplexer that allocates a fixed portion of network bandwidth for low latency traffic. Low latency traffic is routed without the benefit of general-purpose packet processing. In one embodiment, network extensions for low latency operations are described. Specifically, an agent is described that enables low latency applications to negotiate for low latency access. In one embodiment, mechanisms for providing channel event notifications are described. Channel event notifications enable corrective action/packet processing by the low latency application. In one embodiment, mechanisms for providing interface advisory information are described. Interface advisory information may be provided asynchronously to assist in low latency operation.

公开(公告)号：US20190303205A1

公开(公告)日：2019-10-03

申请号：US16368338

申请日：2019-03-28

Applicant: Apple Inc.

Inventor： Cahya Adiansyah Masputra ,  Delziel Jude Fernandes ,  Darrin Jewell ,  Sandeep Nair ,  Wei Shen

IPC: G06F9/50 ,  G06F9/48 ,  G06F13/16 ,  G06F12/10

Abstract: Methods and apparatus for memory allocation and reallocation in networking stack infrastructures. Unlike prior art monolithic networking stacks, the exemplary networking stack architecture described hereinafter includes various components that span multiple domains (both in-kernel, and non-kernel). For example, unlike traditional “socket” based communication, disclosed embodiments can transfer data directly between the kernel and user space domains. A user space networking stack is disclosed that enables extensible, cross-platform-capable, user space control of the networking protocol stack functionality. The user space networking stack facilitates tighter integration between the protocol layers (including TLS) and the application or daemon. Exemplary systems can support multiple networking protocol stack instances (including an in-kernel traditional network stack). Due to this disclosed architecture, physical memory allocations (and deallocations) may be more flexibly implemented.

公开(公告)号：US11824962B2

公开(公告)日：2023-11-21

申请号：US17498574

申请日：2021-10-11

Applicant: Apple Inc.

Inventor： Cahya Adiansyah Masputra ,  Sandeep Nair ,  Darrin Jewell ,  Prabhakar Lakhera ,  Thomas Francis Pauly ,  Joshua Verweyst Graessley ,  Wei Shen ,  Olivier Mardinian

IPC: H04L29/06 ,  H04L69/16 ,  H04L69/163 ,  H04L69/164 ,  H04L12/46 ,  G06F9/54 ,  H04L9/40 ,  G06F9/48 ,  G06F9/50 ,  G06F12/10 ,  G06F13/16 ,  G06F3/06 ,  G06F9/46 ,  G06F12/02 ,  H04L47/2475 ,  H04L47/2483 ,  H04L47/6295 ,  H04L49/00 ,  H04L49/9047 ,  H04L69/00 ,  G06F9/455 ,  H04L47/193 ,  H04L47/283 ,  G06F9/52 ,  H04L43/0864 ,  G06F16/23 ,  G06F21/52 ,  H04L47/24 ,  H04L47/30 ,  H04L47/32 ,  H04L47/6275 ,  G06F21/56 ,  H04L69/22 ,  G06F16/22 ,  H04L61/103 ,  H04L61/2503 ,  H04L67/146 ,  H04L69/18 ,  H04L1/00

CPC classification number: H04L69/162 ,  G06F3/0604 ,  G06F3/0631 ,  G06F3/0644 ,  G06F3/0673 ,  G06F9/45558 ,  G06F9/461 ,  G06F9/4881 ,  G06F9/5005 ,  G06F9/5016 ,  G06F9/5022 ,  G06F9/52 ,  G06F9/542 ,  G06F9/545 ,  G06F12/023 ,  G06F12/10 ,  G06F13/1668 ,  G06F16/2228 ,  G06F16/2365 ,  G06F21/52 ,  G06F21/568 ,  H04L12/4641 ,  H04L43/0864 ,  H04L47/193 ,  H04L47/2458 ,  H04L47/2475 ,  H04L47/2483 ,  H04L47/283 ,  H04L47/30 ,  H04L47/32 ,  H04L47/6275 ,  H04L47/6295 ,  H04L49/30 ,  H04L49/9052 ,  H04L61/103 ,  H04L61/2542 ,  H04L63/166 ,  H04L67/146 ,  H04L69/02 ,  H04L69/161 ,  H04L69/163 ,  H04L69/164 ,  H04L69/18 ,  H04L69/22 ,  G06F9/50 ,  G06F2009/45595 ,  G06F2209/5011 ,  G06F2212/657 ,  G06F2221/032 ,  G06F2221/034 ,  H04L1/0061

Abstract: Methods and apparatus for efficient data transfer within a user space network stack. Unlike prior art monolithic networking stacks, the exemplary networking stack architecture described hereinafter includes various components that span multiple domains (both in-kernel, and non-kernel). For example, unlike traditional “socket” based communication, disclosed embodiments can transfer data directly between the kernel and user space domains. Direct transfer reduces the per-byte and per-packet costs relative to socket based communication. A user space networking stack is disclosed that enables extensible, cross-platform-capable, user space control of the networking protocol stack functionality. The user space networking stack facilitates tighter integration between the protocol layers (including TLS) and the application or daemon. Exemplary systems can support multiple networking protocol stack instances (including an in-kernel traditional network stack).

公开(公告)号：US11799986B2

公开(公告)日：2023-10-24

申请号：US17480964

申请日：2021-09-21

Applicant: Apple Inc.

Inventor： Cahya Adiansyah Masputra ,  Eric Tze Leung Cheng ,  Sandeep Nair ,  Wei Shen

IPC: H04L67/63 ,  H04L41/0896 ,  H04L47/2475 ,  G06F9/54

CPC classification number: H04L67/63 ,  G06F9/545 ,  H04L41/0896 ,  H04L47/2475

Abstract: Methods and apparatus for thread-level execution in non-kernel space. Most modern consumer usage scenarios are focused on user experience for only a few network connections; in many such cases, background network applications and/or stale network connections could be de-prioritized and/or even terminated without adverse effect. The exemplary “polylithic” non-kernel space networking architecture concurrently runs multiple instances of a network stack in non-kernel space. Thread execution for each instance can be individually managed by the operating system (OS). Disclosed embodiments dynamically determine receive (RX) mitigation and/or receive side scaling with consistent hashing.

公开(公告)号：US11477123B2

公开(公告)日：2022-10-18

申请号：US16936228

申请日：2020-07-22

Applicant: Apple Inc.

Inventor： Cahya Adiansyah Masputra ,  Eric Tsz Leung Cheng ,  Sandeep Nair ,  Wei Shen

IPC: H04L47/2425 ,  H04L67/141 ,  H04L47/2441 ,  H04L47/2491 ,  H04L12/28 ,  H04L47/24 ,  H04L47/80 ,  H04L67/61 ,  H04L12/64

Abstract: Methods and apparatus for low latency operation in user space networking architectures. In one embodiment, an apparatus configured to enable low latency data transfer is disclosed. The exemplary embodiment provides a multiplexer that allocates a fixed portion of network bandwidth for low latency traffic. Low latency traffic is routed without the benefit of general-purpose packet processing. In one embodiment, network extensions for low latency operations are described. Specifically, an agent is described that enables low latency applications to negotiate for low latency access. In one embodiment, mechanisms for providing channel event notifications are described. Channel event notifications enable corrective action/packet processing by the low latency application. In one embodiment, mechanisms for providing interface advisory information are described. Interface advisory information may be provided asynchronously to assist in low latency operation.

公开(公告)号：US11146665B2

公开(公告)日：2021-10-12

申请号：US16365462

申请日：2019-03-26

Applicant: Apple Inc.

Inventor： Cahya Adiansyah Masputra ,  Sandeep Nair ,  Darrin Jewell ,  Prabhakar Lakhera ,  Thomas Francis Pauly ,  Joshua Verweyst Graessley ,  Wei Shen ,  Olivier Mardinian

IPC: H04L29/12 ,  H04L29/06 ,  H04L12/46 ,  G06F9/54 ,  G06F9/48 ,  G06F9/50 ,  G06F12/10 ,  G06F13/16 ,  G06F3/06 ,  G06F9/46 ,  G06F12/02 ,  H04L12/859 ,  H04L12/851 ,  H04L12/863 ,  H04L12/935 ,  H04L12/861 ,  G06F9/455 ,  H04L12/801 ,  H04L12/841 ,  G06F9/52 ,  H04L12/26 ,  G06F16/23 ,  G06F21/52 ,  H04L12/833 ,  H04L12/835 ,  H04L12/823 ,  H04L12/865 ,  G06F21/56 ,  G06F16/22 ,  H04L29/08 ,  H04L1/00

Abstract: Methods and apparatus for efficient data transfer within a user space network stack. Unlike prior art monolithic networking stacks, the exemplary networking stack architecture described hereinafter includes various components that span multiple domains (both in-kernel, and non-kernel). For example, unlike traditional “socket” based communication, disclosed embodiments can transfer data directly between the kernel and user space domains. Direct transfer reduces the per-byte and per-packet costs relative to socket based communication. A user space networking stack is disclosed that enables extensible, cross-platform-capable, user space control of the networking protocol stack functionality. The user space networking stack facilitates tighter integration between the protocol layers (including TLS) and the application or daemon. Exemplary systems can support multiple networking protocol stack instances (including an in-kernel traditional network stack).

公开(公告)号：US20210097006A1

公开(公告)日：2021-04-01

申请号：US16936143

申请日：2020-07-22

Applicant: Apple Inc.

Inventor： Cahya Adiansyah Masputra ,  Zeh-Chen Liu ,  Wei Shen

IPC: G06F12/14

Abstract: Methods and apparatus for device driver operation in non-kernel space. In one embodiment, an apparatus configured to configured to interface to a component device driver within non-kernel space is disclosed. The exemplary embodiment restricts device drivers to fewer privileges than kernel processes, while still providing acceptable real-time performance. In another embodiment, mechanisms for non-kernel space device driver operation are described. In one exemplary embodiment, a shared memory interface between kernel space and device drivers enables e.g., a zero-copy device driver architecture.

公开(公告)号：US20190306087A1

公开(公告)日：2019-10-03

申请号：US16363495

申请日：2019-03-25

Applicant: Apple Inc.

Inventor： Cahya Adiansyah Masputra ,  Sandeep Nair ,  Zeh-Chen Liu ,  Wei Shen ,  Olivier Mardinian

IPC: H04L12/861 ,  H04L12/859 ,  H04L29/06 ,  H04L12/851 ,  H04L12/863 ,  H04L12/935

Abstract: Methods and apparatus for dynamic packet pool configuration in networking stack architectures. Unlike prior art monolithic memory allocations, embodiments of the present disclosure enable packet pools associated with non-kernel space applications to dynamically allocate additional memory allocations to a given non-kernel space application, or conversely, de-allocate memory allocations to a given non-kernel space application. Variants also disclose the splitting up of a memory allocation into device accessible portions and kernel accessible portions. Other variants disclose sizing certain segment allocations so as to be a multiple of a physical address page size. Such a variant enables a single input/output (I/O) bus address lookup for the given segment so as to minimize look up costs associated with an I/O lookup for the given segment.

公开(公告)号：US20190303221A1

公开(公告)日：2019-10-03

申请号：US16146324

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Cahya Adiansyah Masputra ,  Wei Shen ,  Sandeep Nair ,  Dieter Wilfred Siegmund ,  Darrin Jewell

IPC: G06F9/54 ,  G06F9/50 ,  G06F9/52 ,  H04L29/06

Abstract: Methods and apparatus for efficient data transfer within a user space network stack. Unlike prior art monolithic networking stacks, the exemplary networking stack architecture described hereinafter includes various components that span multiple domains (both in-kernel, and non-kernel). For example, unlike traditional “socket” based communication, disclosed embodiments can transfer data directly between the kernel and user space domains. Direct transfer reduces the per-byte and per-packet costs relative to socket based communication. A user space networking stack is disclosed that enables extensible, cross-platform-capable, user space control of the networking protocol stack functionality. The user space networking stack facilitates tighter integration between the protocol layers (including TLS) and the application or daemon. Exemplary systems can support multiple networking protocol stack instances (including an in-kernel traditional network stack).