On Thu, 2019-05-16 at 12:53 -0700, Paul Stewart wrote: > I was pleased to fine that the ixgbe driver had good support for the > 10GBit interfaces on the Atom C3708 device I was using. However, the > same is not true of the 2.5GBit interfaces on the Atom C3508. The > PCI > IDs on these interfaces are very similar -- 8086:15cf on the C3508 vs > 8086:15ce on the C3708. Modifying the ixgbe driver to simply treat > 8086:15cf almost works -- the 4 Ethernet interfaces are discovered > and > *something* happens when I plug in a Gigiabit ethernet cable into the > SFP port: > > [ 269.233242] ixgbe 0000:0c:00.0 eth1: NIC Link is Up 1 Gbps, Flow > Control: RX/ > TX > [ 269.240733] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes > ready > [ 269.337230] ixgbe 0000:0c:00.0 eth1: NIC Link is Down > [ 289.682588] ixgbe 0000:0c:00.1 eth2: detected SFP+: 6 > [ 392.859888] ixgbe 0000:0c:00.0: removed PHC on eth1 > [ 393.497099] ixgbe 0000:0c:00.1: removed PHC on eth2 > [ 394./MA257214] ixgbe 0000:0d:00.0: removed PHC on eth3 > [ 394.867122] ixgbe 0000:0d:00.1 eth4: NIC Link is Up 1 Gbps, Flow > Control: RX/TX > [ 394.889384] ixgbe 0000:0d:00.1: removed PHC on eth4 > > Clearly not all is well, as could be expected -- I'm sure there's a > real reason why these are separate PCI IDs. Is there someone out > there that can point me at docs I can use to support the device > myself, or does anyone know if support is coming? Should this device > be considered an X550 or is this a different device fundamentally > (should I not use the Intel X550 docs as a reference, if I were to > hunt down some documentation about the difference between these > parts?)
Adding the intel-wired-lan mailing, which is the proper mailing list for issues like this. Let me look into this and get back to you.
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