Context-Aware Thin-Network Stack for Split Boot

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Solution Overview

Problem

Traditional UEFI network stacks in split BIOS architecture lead to suboptimal boot times and increased vulnerability due to the loading of all network drivers during boot, regardless of the boot type, and lack intelligence to selectively load necessary modules, resulting in inefficient and insecure boot processes.

Innovation Solution

A context-aware thin-network stack system that determines the context of the current boot session based on user boot history and selectively loads only the necessary network drivers, implementing an adaptive approach to optimize boot paths and enhance security by using a pseudo boot node to manage network protocols.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If all network drivers are loaded during boot in traditional UEFI network stack, then network functionality is comprehensive, but boot time increases and security is compromised

Engineering Contradiction:

Improvenetwork functionalityVSAvoidboot time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The network driver stack is segmented into multiple components that can be selectively loaded. The patent divides the traditional monolithic network stack into individual driver modules that are loaded only when needed, based on the detected boot type. This allows comprehensive network functionality to be available when required while minimizing boot time when network drivers are not needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically determines the appropriate network drivers to load based on the boot type detection. Rather than statically loading all drivers, the system adapts its configuration in real-time based on the operational context, loading only the necessary drivers for the current boot scenario (PXE, HTTP, or local boot).

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If all network drivers are loaded during boot, then network protocol coverage is complete, but attack surface increases

Engineering Contradiction:

Improvenetwork protocol coverageVSAvoidattack surface

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and removes unnecessary network drivers from the boot process by detecting the boot type and selectively loading only the required drivers. This extraction principle reduces the attack surface by eliminating potential entry points for network-based attacks while maintaining complete network protocol coverage when actually needed.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system takes preliminary action by detecting the boot type before loading network drivers, thereby preventing unnecessary drivers from being loaded in the first place. This proactive approach counters potential security threats by ensuring that only necessary network components are present during boot, reducing the window of vulnerability.

Inventive Principle:

Principle #9Preliminary anti-action

3Device complexity

If boot path is fixed and non-adaptive, then system simplicity is maintained, but boot efficiency decreases

Engineering Contradiction:

Improvesystem simplicityVSAvoidboot efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The system performs self-service by automatically detecting the boot type and selecting the appropriate network drivers without user intervention. This self-determining approach maintains system simplicity from the user perspective while achieving high boot efficiency through intelligent, context-aware driver selection.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system uses feedback from boot type detection to dynamically adjust the network driver loading strategy. By continuously monitoring the boot context and adapting driver selection accordingly, the system achieves both simplicity and efficiency, loading the minimal necessary components for each specific boot scenario.

Inventive Principle:

Principle #23Feedback

4Measurement precision

If VFR parsing is performed on every boot instance, then network configuration accuracy is ensured, but pre-boot time increases

Engineering Contradiction:

Improvenetwork configuration accuracyVSAvoidpre-boot time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies partial action by performing VFR parsing only when necessary - specifically, only when the boot type requires network configuration. For local boots where network configuration is not needed, the parsing is omitted entirely, reducing pre-boot time while maintaining configuration accuracy when actually required.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12061912B2Context-aware thin-network stack to provide rich network features in split boot architecture

Publication Date: 2024.08.13 DELL PROD LP

AI summary

An information handling system may include a processor and a basic input/output system communicatively coupled to the processor and comprising a program of executable instructions configured to determine a context associated with a current boot session of the information handling system and based on user boot history stored during one or more previous boot sessions of the information handling system and the context, load one or more network drivers necessary to boot the information handling system in accordance with the context.