[E1000-devel] ixgbe for 10 GbE SFP+ without CS4227 phy

[John H <5sn...@sn...>]

Can the ixgbe driver be used without a CS4227 PHY between the NIC (X552 in this case) and the SFP+?  Do you have to configure anything (driver settings, EEPROM firmware) to support that?

I do see a CS4227 error message from the driver, but it's not clear if that is fatal:

Jun 17 21:36:26 localhost kernel: ixgbe 0000:04:00.0: eth10: CS4227 reset failed: -18
Jun 17 21:36:26 localhost kernel: ixgbe 0000:04:00.0: registered PHC device on eth10
Jun 17 21:36:26 localhost kernel: ADDRCONF(NETDEV_UP): eth10: link is not ready
Jun 17 21:36:26 localhost kernel: ixgbe 0000:04:00.0: eth10: detected SFP+: 5

However, I am not seeing link (NO-CARRIER).

Here is 'ethtool -m', so it's talking to the SFP+ okay.

$ sudo ethtool -m eth10
        Identifier          : 0x03 (SFP)
        Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
        Connector           : 0x07 (LC)
        Transceiver codes   : 0x10 0x00 0x000x00 0x00 0x00 0x00 0x00
                            :  => 10G Ethernet: 10G Base-SR
        Encoding            : 0x06 (64B/66B)
        BR, Nominal         : 10300MBd
        Rate identifier     : 0x00 (unspecified)
        Length (SMF,km)     : 0km
        Length (SMF)        : 0m
        Length (50um)       : 80m
        Length (62.5um)     : 20m
        Length (Copper)     : 0m
        Length (OM3)        : 300m
        Laser wavelength    : 850nm
        Vendor name         : CISCO-INTEGRA   
        Vendor OUI          : c8:de:51
        Vendor PN           : SFP-10G-SR-S-IO 
        Vendor rev          : 01