SR-IOV Channel Path Identifier Binding for Virtual Function Teardown
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Solution Overview
Problem
Current systems for managing communications channels in virtualized environments, such as those using SR-IOV adaptors, face complexity and contention issues during initialization and teardown operations, particularly due to resource allocation and deallocation challenges, which can lead to lengthy processes and interference with higher layer protocols.
Innovation Solution
A hypervisor program is used to organize and manage communications channels by binding them to specific virtual functions of an SR-IOV adaptor using channel path identifiers, enabling access to guest operating systems and initiating resets upon receiving teardown commands, thus deallocating resources efficiently without contention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional methods are used to manage communications channels in virtualized environments, then channel operations can be performed, but complexity and contention issues arise during initialization and teardown operations
Solution Approach 1:
The patent introduces an intermediary mechanism (channel path identifier binding to virtual functions) that mediates between the coupling channel and the virtualized hardware resources. This intermediary layer simplifies the management complexity by providing a clear binding relationship, while simultaneously improving reliability by enabling precise tracking and control of channel-resource associations during initialization and teardown operations
2Adaptability or versatility
If resources are allocated and deallocated during dynamic operations, then channel flexibility is improved, but contention and interference with higher layer protocols occur
Solution Approach 1:
The patent segments the channel management process into distinct phases with clear boundaries - initialization phase where bindings are established, and teardown phase where bindings are removed. This segmentation allows dynamic resource allocation and deallocation to occur in a structured manner, improving adaptability while minimizing contention and interference with higher layer protocols by confining dynamic operations to specific manageable phases
Data Source
AI summary
Embodiments include a method of organizing communications channels associated with virtual functions of a single root input and output virtualization (SR-IOV) adaptor. The method includes organizing a first coupling channel according to a first channel path identifier bound to designated communications over a first virtual function of the SR-IOV adaptor allocated according to first virtual function resources that support the first coupling channel. The method also includes enabling access to the first coupling channel to a first guest operating system. The method also includes receiving a teardown command associated with the first coupling channel. The method further includes initiating a reset of the first virtual function that deallocates the first virtual function resources associated the first virtual function.