Abstract: This document relates to analyzing of network stack functionality that is implemented in hardware, such as on a network adapter. The disclosed implementations employ a programmable network device, such as a switch, to inject events into traffic and mirror the traffic for subsequent analysis. The events can have user-specified event parameters to test different types of network stack behavior, such as how the network adapters respond to corrupted packets, dropped packets, or explicit congestion notifications.

Abstract: Technology for managing operational modes of a network adapter is disclosed. The technology includes features for selectively preempting (e.g., canceling, suspending, deferring, pausing, changing to a “no-op” state, changing to a passive state, or otherwise deprioritizing) execution for a current operational mode of the network adapter, executing a requested network control operation, and optionally restoring the preempted operational mode. The operational mode may be selectively preempted based on priority information associated with the current operational mode and the requested network control operation.

Abstract: Technology for managing queuing resources of a shared network adapter is disclosed. The technology includes selectively transferring data from data transmission sources to a queue of the shared network adapter based on status indications from the shared network adapter regarding availability of queuing resources at the shared network adapter. In addition, the technology also includes features for selectively controlling transfer rates of data to the shared network adapter from applications, virtual network stations, other virtual adapters, or other data transmission sources. As one example, this selective control is based on how efficiently data from these data transmission sources are transmitted from the shared network adapter.

Abstract: Technology for allocating network adapter resources such as air interface time and queue space amongst multiple virtual network stations or other virtual adapters is disclosed. As one example, the resource allocation may be based on analysis of the relative latency, jitter, or bandwidth considerations for applications communicating via each of the multiple virtual adapters. The resource allocation may also be based on how efficiently each of the virtual adapters utilized previously allocated resources.

Abstract: Technology for allocating network adapter resources such as air interface time and queue space amongst multiple virtual network stations or other virtual adapters is disclosed. As one example, the resource allocation may be based on analysis of the relative latency, jitter, or bandwidth considerations for applications communicating via each of the multiple virtual adapters. The resource allocation may also be based on how efficiently each of the virtual adapters utilized previously allocated resources.

Abstract: Technology for managing queuing resources of a shared network adapter is disclosed. The technology includes selectively transferring data from data transmission sources to a queue of the shared network adapter based on status indications from the shared network adapter regarding availability of queuing resources at the shared network adapter. In addition, the technology also includes features for selectively controlling transfer rates of data to the shared network adapter from applications, virtual network stations, other virtual adapters, or other data transmission sources. As one example, this selective control is based on how efficiently data from these data transmission sources are transmitted from the shared network adapter.

Abstract: Technology for managing queuing resources of a shared network adapter is disclosed. The technology includes selectively transferring data from data transmission sources to a queue of the shared network adapter based on status indications from the shared network adapter regarding availability of queuing resources at the shared network adapter. In addition, the technology also includes features for selectively controlling transfer rates of data to the shared network adapter from applications, virtual network stations, other virtual adapters, or other data transmission sources. As one example, this selective control is based on how efficiently data from these data transmission sources are transmitted from the shared network adapter.

Abstract: Technology for prioritizing and executing network control operations is disclosed. The technology includes prioritizing requested network control operations against other network control operations and executing network control operations based on this prioritization. The prioritization may be based on priority information and classes with which the network control operations are associated. The classes may be based on expected durations of time for executing the network control operations. The technology also includes prioritizing and executing network control operations in a virtualized networking system.

Abstract: Technology for managing operational modes of a network adapter is disclosed. The technology includes features for selectively preempting (e.g., canceling, suspending, deferring, pausing, changing to a “no-op” state, changing to a passive state, or otherwise deprioritizing) execution for a current operational mode of the network adapter, executing a requested network control operation, and optionally restoring the preempted operational mode. The operational mode may be selectively preempted based on priority information associated with the current operational mode and the requested network control operation.

Abstract: Technology for managing queuing resources of a shared network adapter is disclosed. The technology includes selectively transferring data from data transmission sources to a queue of the shared network adapter based on status indications from the shared network adapter regarding availability of queuing resources at the shared network adapter. In addition, the technology also includes features for selectively controlling transfer rates of data to the shared network adapter from applications, virtual network stations, other virtual adapters, or other data transmission sources. As one example, this selective control is based on how efficiently data from these data transmission sources are transmitted from the shared network adapter.

Abstract: Technology for allocating network adapter resources such as air interface time and queue space amongst multiple virtual network stations or other virtual adapters is disclosed. As one example, the resource allocation may be based on analysis of the relative latency, jitter, or bandwidth considerations for applications communicating via each of the multiple virtual adapters. The resource allocation may also be based on how efficiently each of the virtual adapters utilized previously allocated resources.