Why is the Intel® FPGA Low Latency Ethernet 10G MAC IP not able to generate XON pause frames when priority flow control feature is enabled?

Description

Due to a problem with the Low Latency Ethernet 10G MAC Intel® FPGA IP, XON pause frames generation may not work for multiple queues if XOFF pause frame generation for multiple queues are enabled, followed by a XON pause frame generation for a single queue.

Resolution

There is no workaround for this problem.

This problem has been fixed starting in version 18.1 of the Intel® Quartus® Prime software.