I am seeing a problem with link state change using interrupts using a Broadwell with on-board 10G-BaseT LAN ports (0x15AD) running DPDK 16.04. There is an Ixia connected to the two 10G ports and both are initially up. One of the connections is brought down via the Ixia and the software gets a single down event through the callback installed with rte_eth_dev_callback_register() and enabling lsc in the rte_eth_conf structure. The connection is then re-enabled and a single up event is received as expected. However on the other 10G port when the connection is brought down sporadic down events are continually received at a frequency ranging from about 1 seconds to 20 seconds. I do not see the problem with the two 1G ports. The problem has been seen on two different Broadwell boxes.
I'm looking for information from others that have seen anything like this problem. Ken Coulson Software Engineer with Ciena
