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WSA_QOS_EPSFLOWSPEC
The failing flowspec is nested in ProviderSpecific data, not QOS itself
WSA_QOS_EPSFLOWSPEC distinguishes a bad FLOWSPEC embedded in a provider-specific FLOWDESCRIPTOR from WSA_QOS_EFLOWSPEC, which refers to the standard sending or receiving FLOWSPEC members of QOS. This distinction identifies which serialization path must be inspected.
Locate the enclosing RSVP_RESERVE_INFO, then validate each descriptor’s FLOWSPEC using the same service-type and rate relationships as the top-level structure. Also verify that object lengths and pointers place the descriptor where the provider expects it. Copying a top-level FLOWSPEC byte-for-byte can still fail if the nested descriptor belongs to a different receiver, filter set, or reservation style.
How to isolate the nested error
- FlowDescList index containing the bad value.
- Nested ServiceType and rate parameters.
- Associated FILTERSPEC list.
- ProviderSpecific object framing around the descriptor.
References
- Microsoft: provider-specific flow descriptors
- Microsoft: nested FLOWSPEC location
- Microsoft: FLOWSPEC validation requirements
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