we are getting such errors:
[ 408.737313] ixgbe 0000:03:00.0 eth0: Detected Tx Unit Hang (XDP)
Tx Queue <46>
TDH, TDT <0>, <2>
next_to_use <2>
next_to_clean <0>
tx_buffer_info[next_to_clean]
time_stamp <0>
jiffies <1000197c0>
[ 408.804438] ixgbe 0000:03:00.0 eth0: tx hang 1 detected on queue 46,
resetting adapter
[ 408.804440] ixgbe 0000:03:00.0 eth0: initiating reset due to tx timeout
[ 408.817679] ixgbe 0000:03:00.0 eth0: Reset adapter
[ 408.866091] ixgbe 0000:03:00.0 eth0: TXDCTL.ENABLE for one or more queues
not cleared within the polling period
[ 409.345289] ixgbe 0000:03:00.0 eth0: detected SFP+: 3
[ 409.497232] ixgbe 0000:03:00.0 eth0: NIC Link is Up 10 Gbps, Flow Control:
RX/TX
while running XDP prog on ixgbe nic.
right now i'm seing this on bpfnext kernel
(latest commit from Wed Aug 15 15:04:25 2018 -0700 ;
9a76aba02a37718242d7cdc294f0a3901928aa57)
looks like this is the same issue as reported by Brenden in
https://www.spinics.net/lists/netdev/msg439438.html
--
Nikita V. Shirokov
