Due to a problem in the 25.1 and earlier versions of the AXI Streaming IP for PCI Express*, RX TLP packets can be lost if the IP is generated for Gen5 data rates but is actually operating at lower rates, and back-to-back small RX TLPs are received where the TLPs appear in each segment.
The R-Tile Avalon® Streaming IP for PCI Express* is not affected by this problem.
No workaround to this problem exists in the 25.1 and earlier releases of the AXI Streaming IP for PCI Express*.
This problem is scheduled to be fixed in a future release of the AXI Streaming IP for PCI Express*.