[Bug 221919] ixl: TX queue hang when using TSO and having a high and mixed network load

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221919

Wallace <incin at incin.me> changed:

           What    |Removed                     |Added
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                 CC|                            |incin at incin.me

--- Comment #9 from Wallace <incin at incin.me> ---
We are having the same issue on a new Supermicro server purchsed this month.

ixl0 at pci0:26:0:0:       class=0x020000 card=0x37d215d9 chip=0x37d28086 rev=0x09
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Ethernet Connection X722 for 10GBASE-T'
    class      = network
    subclass   = ethernet

Dec 27 10:23:03 hostname kernel: ixl0: WARNING: queue 1 appears to be hung!
Dec 27 10:23:03 hostname kernel: ixl0: WARNING: Resetting!
Dec 27 10:23:10 hostname kernel: ixl0: Malicious Driver Detection event 14 on
TX queue 1, pf number 0
Dec 27 10:23:10 hostname kernel: ixl0: MDD TX event is for this function!

After playing with lro and tso things seemed to be better. No more errors in
the log files and NFS shares seemed more stable. Over the past week it seemed
it didn't matter if there was light or heavy traffic. 


Errors: 

ixl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=6407bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether ac:1f:6b:61:a3:80
        hwaddr ac:1f:6b:61:a3:80
        inet x.x.x.x netmask 0xfffff800 broadcast x.x.x.x
        inet x.x.x.x netmask 0xfffff800 broadcast x.x.x.x 
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (10Gbase-T <full-duplex>)
        status: active

No Errors:

[root at backup0 ~]# ifconfig ixl0 -lro -tso
[root at backup0 ~]# ifconfig ixl0
ixl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=6400bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether ac:1f:6b:61:a3:80
        hwaddr ac:1f:6b:61:a3:80
        inet x.x.x.x netmask 0xfffff800 broadcast x.x.x.x 
        inet x.x.x.x netmask 0xfffff800 broadcast x.x.x.x
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet

[root at hostname /var/log]# freebsd-version -k
11.1-RELEASE-p4
[root at hostname /var/log]# freebsd-version -u
11.1-RELEASE-p6

I can provide more info if anyone needs it or help debug the issue more.

Thanks!

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