[dpdk-dev] Link status issue with i40e firmware 7.0x

[David Marchand]

On Wed, Oct 30, 2019 at 3:20 PM David Marchand
<david.marchand at redhat.com> wrote:
>
> Hello,
>
> We recently upgraded a XXV710 nic on a Dell R740 server (running RHEL
> 7.7) to firmware version 7.00.
>
> # ethtool -i enp59s0f0
> driver: i40e
> version: 2.8.10-k
> firmware-version: 7.00 0x80004cf8 1.2154.0
> expansion-rom-version:
> bus-info: 0000:3b:00.0
> supports-statistics: yes
> supports-test: yes
> supports-eeprom-access: yes
> supports-register-dump: yes
> supports-priv-flags: yes
>
>
> Following this upgrade, using the nic with dpdk only works once.
> Restarting testpmd (dpdk 18.11.2) ends up with all ports reporting
> that link is down, and indeed, the other side of the cable reports
> that there is no light.

More info on reproducing the issue.
>From a testpmd with links up:

# all good
testpmd> show port summary all
Number of available ports: 2
Port MAC Address       Name         Driver         Status   Link
0    3C:FD:FE:AD:BF:C4 0000:3b:00.0 net_i40e       up       25000Mbps
1    3C:FD:FE:AD:BF:C5 0000:3b:00.1 net_i40e       up       25000Mbps


# setting one link down
testpmd> set link-down port 0
i40e_phy_conf_link():     Current: abilities 1c, link_speed 4c
i40e_phy_conf_link():     Config:  abilities 24, link_speed 4c
testpmd> i40e_dev_alarm_handler(): ICR0: adminq event

Port 0: link state change event
i40e_dev_alarm_handler(): ICR0: adminq event

testpmd> show port summary all
Number of available ports: 2
Port MAC Address       Name         Driver         Status   Link
0    3C:FD:FE:AD:BF:C4 0000:3b:00.0 net_i40e       down     0Mbps
1    3C:FD:FE:AD:BF:C5 0000:3b:00.1 net_i40e       up       25000Mbps


# trying to set back up
testpmd> set link-up port 0
i40e_phy_conf_link():     Current: abilities 4, link_speed 0
i40e_phy_conf_link():     Config:  abilities 3c, link_speed 7e
testpmd> i40e_dev_alarm_handler(): ICR0: adminq event

testpmd> show port summary all
Number of available ports: 2
Port MAC Address       Name         Driver         Status   Link
0    3C:FD:FE:AD:BF:C4 0000:3b:00.0 net_i40e       down     0Mbps
1    3C:FD:FE:AD:BF:C5 0000:3b:00.1 net_i40e       up       25000Mbps

End of the game.
Need to bind back to the i40e kernel module to restore connectivity.


Any idea?

-- 
David Marchand