Using an updated driver, I cannot seem to get my interfaces up. Looks like the driver is not allowing the NIC to work due to the SFP+ module type, which worked previously on my Debian Stretch host. Clearly the NIC is detecting and reading the DAC, but I don't understand why it is not working. This is a 40G-breakout cable with 40-to-4x10G SFP+ DAC (TwinAx). I have tried adding the following to work around it, but it still does not work:
root@lab4:~# cat /etc/modprobe.d/i40e.conf
options i40e allow_unsupported_sfp=1
This was also discussed here, but there was no followup:
Intel Ethernet Drivers and Utilities / Mailing Lists
Output from dmesg:
[ 4.439190] i40e 0000:08:00.3: PCI-Express: Speed 8.0GT/s Width x8
[ 4.447918] i40e 0000:08:00.3: Features: PF-id[3] VFs: 32 VSIs: 34 QP: 8 RSS FD_ATR FD_SB NTUPLE CloudF DCB VxLAN Geneve NVGRE PTP VEPA
[ 4.453414] i40e 0000:08:00.2: Rx/Tx is disabled on this device because an unsupported SFP+ module type was detected.
[ 4.465288] i40e 0000:08:00.2: Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.
Other pertinent output:
root@lab4:~# ethtool -m eth6
Identifier : 0x03 (SFP)
Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
Connector : 0x21 (Copper pigtail)
Transceiver codes : 0x00 0x00 0x00 0x00 0x00 0x04 0x00 0x00
Transceiver type : FC: Copper Passive
Encoding : 0x00 (unspecified)
BR, Nominal : 10300MBd
Rate identifier : 0x00 (unspecified)
Length (SMF,km) : 0km
Length (SMF) : 0m
Length (50um) : 0m
Length (62.5um) : 0m
Length (Copper) : 3m
Length (OM3) : 0m
Passive Cu cmplnce. : 0x01 (SFF-8431 appendix E) [SFF-8472 rev10.4 only]
Vendor name : Amphenol
Vendor OUI : 78:a7:14
Vendor PN : 624400003
Vendor rev : A
Option values : 0x00 0x00
BR margin, max : 0%
BR margin, min : 0%
Vendor SN : APF13470035GDT
Date code : 131122
root@lab4:~# ethtool -i eth6
driver: i40e
version: 2.4.3
firmware-version: 6.01 0x800034af 1.1747.0
expansion-rom-version:
bus-info: 0000:08:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes
root@lab4:~# ethtool eth6
Settings for eth6:
Supported ports: [ ]
Supported link modes: Not reported
Supported pause frame use: Symmetric
Supports auto-negotiation: No
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: Unknown!
Duplex: Unknown! (255)
Port: Other
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: d
Wake-on: d
Current message level: 0x0000000f (15)
drv probe link timer
Link detected: no
root@lab4:~# ip link show eth6
5: eth6: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether 68:05:ca:2f:7c:b0 brd ff:ff:ff:ff:ff:ff
