Version Found: v2.0
Version Resolved and other Known Issues for v2.0 core: See (Xilinx Answer 54648)
The packets are going into the TX Buffer but is not coming out and being presented to the GT link; hence, this has stalled the packet transfer indefinitely.
This is a known issue to be fixed in the next release of the core.
To work around the issue in this release of the core, install the SRIO Gen2 v2.0 Rev1 patch that is available in (Xilinx Answer 55737).