On Windows, about ethernet Mellanox ConnectX-5 MaxInlineDataSize

Infrastructure & Networking Adapters and Cables Ethernet Adapter Cards
1

When use adapter Query method, MaxInlineDataSize we get is 444 bytes, but when CreateQueuePair pass in parameter >220, CreateQueuePair failed with ND_INSUFFICIENT_RESOURCES, why cannot use queried max inline size?

2

inline size is fixed 220byte.

3

But why the query result about adapter’s MaxInlineDataSize is 444? Is it total inline size for two different connection ports?