One or more examples relate to an on-chip protocol analyzer provided at a physical layer of a communication interface to receive information about link control process data carried by a communication system to or from a protocol control logic of the communication interface.

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).

An embodiment may involve executing a set of instructions, where the set of instructions define how to generate outputs that represent one or more data packets, and where segments of the outputs are copied from first parts of respective instructions in the set of instructions. The embodiment may further involve: retrieving, from a plurality of registers, a data packet header; retrieving, from the plurality of registers, a first part of a data packet payload and an increment value; applying the increment value to the first part of the data packet payload to generate a second part of the data packet payload; storing, in the plurality of registers, the first part of the data packet payload with the increment value applied; and providing, as additional segments of the outputs, the data packet header, the first part of the data packet payload, and the second part of the data packet payload.

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).

A computer implemented method for analyzing network connections includes identifying a connection of interest and a corresponding set of connection data. The method additionally includes generating one or more saliency maps corresponding to the connection of interest. The method additionally includes mapping the generated one or more saliency maps to underlying protocols and fields, and identifying one or more values corresponding to each of the underlying protocols and fields. The method additionally includes extracting general correspondences from the identified one or more values corresponding to each of the underlying protocols and fields.

Provided are a packet transmission method and device and a computer readable storage medium. The packet transmission method includes: receiving, by the routing device, a packet, determining whether the packet is a packet that needs to be accelerated, in response to determining that the packet is the packet that needs to be accelerated, querying a customized connection tracking table to acquire connection tracking information corresponding to the packet, transmitting the packet to a driver layer for processing, where the customized connection tracking table includes connection tracking information of a packet corresponding to a packet type which is predetermined to be accelerated.

This disclosure describes techniques for performing communications between devices using various aspects of Ethernet standards. As further described herein, a protocol is disclosed that may be used for communications between devices, where the communications take place over a physical connection complying with Ethernet standards. Such a protocol may enable reliable and in-order delivery of frames between devices, while following Ethernet physical layer rules, Ethernet symbol encoding, Ethernet lane alignment, and/or Ethernet frame formats.

A method is provided for finding vulnerabilities of a server and a client communicating according to a communication protocol standard. The method includes establishing a connection between the server and client according to the communication protocol standard; generating valid packets from a communication protocol model, the valid packets being compliant with the communication protocol standard; generating mutated packets by mutating the valid packets according to mutation probabilities; sending the mutated packets from the server to the client or from the client to the server during different states of the communication protocol model; receiving first responses to the mutated packets; sending invalid packets from the server to the client or from the client to the server during different states of the communication protocol model; receiving second responses to the invalid packets; and identifying anomalies of the client or server based on the received first and/or second responses.

The present invention provides methods, apparatus and systems for improving a systems-level data rate on a communications link such as the orthogonal frequency division multiplexed multiple access (OFDMA) downlink used in WiFi and LTE cellular/wireless mobile data applications. The present invention preferably uses a form of multilevel coding and decoding known as tiled-building-block encoding/decoding. With the present invention, different receivers coupled to different parallel downlink channels with different channel qualities decode different received signal constellations at different levels of resolution. This allows the downlink of the OFDMA system to operate with a significantly higher data rate, thus eliminating existing inefficiencies in the downlink and significantly increasing system level bandwidth efficiency.

A device may receive network protocol data identifying a network protocol trace associated with network devices of a network, and may divide the network protocol trace into multiple segments. The device may identify a set of segments, in the multiple segments, that includes a first segment and second segments related to the first segment, and may process the multiple segments, in parallel, to determine first results data corresponding to the multiple segments. The device may process the second segments, in parallel, to determine second results data, and may combine the first results data and the second results data to generate final results data, wherein the final results data indicate utilization by the network devices of a network protocol associated with the network. The device may perform one or more actions based on the final results data.