Re: ixgbe: Regression, unsupported SFP+ modules on 10Gbit/s X520 NIC no longer work with allow_unsupported_sfp=1

On Fri, 2013-02-15 at 01:10 +0100, Stefan Behte wrote:

Hello,

I was told to send a mail, even though I had already opened
https://bugzilla.kernel.org/show_bug.cgi?id=53901.

Someone patched the ixgbe driver, and now non-intel SFPs do not work
anymore, again. The issue of intel "lock-in" was discussed before
here:
http://marc.info/?l=e1000-devel&m=132697406314730&w=2

A tested patch is attached.

Here is what I do:

# modinfo ixgbe | grep parm
parm:           max_vfs:Maximum number of virtual functions to
allocate per physical function - default is zero and maximum value is
63 (uint)
parm:           allow_unsupported_sfp:Allow unsupported and untested
SFP+ modules on 82599-based adapters (uint)
parm:           debug:Debug level (0=none,...,16=all) (int)

# modprobe -r ixgbe
# modprobe ixgbe allow_unsupported_sfp=0
# dmesg | grep ixgbe
[13690.355090] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver -
version 3.9.15-k
[13690.355092] ixgbe: Copyright (c) 1999-2012 Intel Corporation.
[13690.373128] ixgbe 0000:02:00.0: failed to load because an
unsupported SFP+ module type was detected.
[13690.373177] ixgbe 0000:02:00.0: Reload the driver after installing
a supported module.
[13690.390987] ixgbe 0000:02:00.1: failed to load because an
unsupported SFP+ module type was detected.
[13690.391036] ixgbe 0000:02:00.1: Reload the driver after installing
a supported module.

# modprobe -r ixgbe
# modprobe ixgbe allow_unsupported_sfp=1
# dmesg | grep ixgbe
[13679.088849] dca service started, version 1.12.1
[13679.091174] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver -
version 3.9.15-k
[13679.091177] ixgbe: Copyright (c) 1999-2012 Intel Corporation.
[13679.109194] ixgbe 0000:02:00.0: failed to load because an
unsupported SFP+ module type was detected.
[13679.109243] ixgbe 0000:02:00.0: Reload the driver after installing
a supported module.
[13679.127399] ixgbe 0000:02:00.1: failed to load because an
unsupported SFP+ module type was detected.
[13679.127450] ixgbe 0000:02:00.1: Reload the driver after installing
a supported module.
[13690.352712] dca service started, version 1.12.1


With the patch:

# modprobe -r ixgbe
# modprobe ixgbe allow_unsupported_sfp=0
# dmesg | grep ixgbe
[13907.870087] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver -
version 3.9.15-k
[13907.870089] ixgbe: Copyright (c) 1999-2012 Intel Corporation.
[13907.888106] ixgbe 0000:02:00.0: failed to load because an
unsupported SFP+ module type was detected.
[13907.888155] ixgbe 0000:02:00.0: Reload the driver after installing
a supported module.
[13907.906187] ixgbe 0000:02:00.1: failed to load because an
unsupported SFP+ module type was detected.
[13907.906237] ixgbe 0000:02:00.1: Reload the driver after installing
a supported module.


# modprobe -r ixgbe
# modprobe ixgbe allow_unsupported_sfp=1
# dmesg | grep ixgbe
[13914.534758] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver -
version3.9.15-k
[13914.534761] ixgbe: Copyright (c) 1999-2012 Intel Corporation.
[13914.552820] ixgbe 0000:02:00.0 (unregistered net_device): WARNING:
Intel (R) Network Connections are quality tested using Intel (R)
Ethernet Optics.  Using untested modules is not supported and may
cause unstable operation or damage to
the module or the adapter.  Intel Corporation is not responsible for
any harm caused by using untested modules.
[13917.741931] ixgbe 0000:02:00.0: irq 50 for MSI/MSI-X
[13917.741938] ixgbe 0000:02:00.0: irq 51 for MSI/MSI-X
[13917.741942] ixgbe 0000:02:00.0: irq 52 for MSI/MSI-X
[13917.741951] ixgbe 0000:02:00.0: irq 53 for MSI/MSI-X
[13917.741955] ixgbe 0000:02:00.0: irq 54 for MSI/MSI-X
[13917.741960] ixgbe 0000:02:00.0: irq 55 for MSI/MSI-X
[13917.741965] ixgbe 0000:02:00.0: irq 56 for MSI/MSI-X
[13917.741969] ixgbe 0000:02:00.0: irq 57 for MSI/MSI-X
[13917.741973] ixgbe 0000:02:00.0: irq 58 for MSI/MSI-X
[13917.742002] ixgbe 0000:02:00.0: Multiqueue Enabled: Rx Queue count
= 8, Tx Queue count = 8
[13917.742126] ixgbe 0000:02:00.0: (PCI Express:5.0GT/s:Width x8)
90:e2:ba:37:3b:18
[13917.742207] ixgbe 0000:02:00.0: MAC: 2, PHY: 14, SFP+: 65535, PBA
No: E68793-005
[13917.743461] ixgbe 0000:02:00.0: Intel(R) 10 Gigabit Network
Connection
[13917.761578] ixgbe 0000:02:00.1 (unregistered net_device): WARNING:
Intel (R) Network Connections are quality tested using Intel (R)
Ethernet Optics.  Using untested modules is not supported and may
cause unstable operation or damage to the module or the adapter.
Intel Corporation is not responsible for any harm caused by using
untested modules.
[13920.948726] ixgbe 0000:02:00.1: irq 59 for MSI/MSI-X
[13920.948737] ixgbe 0000:02:00.1: irq 60 for MSI/MSI-X
[13920.948742] ixgbe 0000:02:00.1: irq 61 for MSI/MSI-X
[13920.948746] ixgbe 0000:02:00.1: irq 62 for MSI/MSI-X
[13920.948751] ixgbe 0000:02:00.1: irq 63 for MSI/MSI-X
[13920.948757] ixgbe 0000:02:00.1: irq 64 for MSI/MSI-X
[13920.948761] ixgbe 0000:02:00.1: irq 65 for MSI/MSI-X
[13920.948767] ixgbe 0000:02:00.1: irq 66 for MSI/MSI-X
[13920.948774] ixgbe 0000:02:00.1: irq 67 for MSI/MSI-X
[13920.948803] ixgbe 0000:02:00.1: Multiqueue Enabled: Rx Queue count
= 8, Tx Queue count = 8
[13920.948927] ixgbe 0000:02:00.1: (PCI Express:5.0GT/s:Width x8)
90:e2:ba:37:3b:19
[13920.949008] ixgbe 0000:02:00.1: MAC: 2, PHY: 14, SFP+: 65535, PBA
No: E68793-005
[13920.950237] ixgbe 0000:02:00.1: Intel(R) 10 Gigabit Network
Connection

And then I get two nice Interfaces. Please apply. :)


Best regards,

Stefan Behte

Babiel GmbH
Moskauer Strasse 27
D-40227 Düsseldorf

Tel:    0211-179349 0
Fax:    0211-179349 29
E-Mail: S.Behte@babiel.com
Internet: http://www.babiel.com

Thanks Stefan, I will make sure that we take a look at the bugzilla.