[Bug 219428] em network driver broken in current

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219428

Sergey V. Dyatko <sergey.dyatko at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |sergey.dyatko at gmail.com

--- Comment #9 from Sergey V. Dyatko <sergey.dyatko at gmail.com> ---
Hi, I have SuperMicro server 
smbios.planar.product="X9DRW-3LN4F+/X9DRW-3TF+"
running
FreeBSD st3.domain.tld 12.0-CURRENT FreeBSD 12.0-CURRENT #0 r325556: Sun Nov 12
22:39:29 MSK 2017    
root at st3.domain.tld:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG  amd64
with igb(4):
igb0 at pci0:4:0:0:        class=0x020000 card=0x152115d9 chip=0x15218086 rev=0x01
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'I350 Gigabit Network Connection'
    class      = network
    subclass   = ethernet
igb1 at pci0:4:0:1:        class=0x020000 card=0x152115d9 chip=0x15218086 rev=0x01
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'I350 Gigabit Network Connection'
    class      = network
    subclass   = ethernet
igb2 at pci0:129:0:0:      class=0x020000 card=0x152115d9 chip=0x15218086 rev=0x01
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'I350 Gigabit Network Connection'
    class      = network
    subclass   = ethernet
igb3 at pci0:129:0:3:      class=0x020000 card=0x152115d9 chip=0x15218086 rev=0x01
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'I350 Gigabit Network Connection'
    class      = network
    subclass   = ethernet

# grep lagg /etc/rc.conf
cloned_interfaces="lagg0 vlan2"
ifconfig_lagg0="laggproto lacp laggport igb0 laggport igb1 laggport igb2
laggport igb3 62.x.x.x netmask 255.255.255.224"
ifconfig_vlan2="vlan 2 vlandev lagg0 192.168.2.3/24"

after reboot all works fine:
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=e505bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,LRO,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 0c:c4:7a:4c:11:d2
        inet 62.x.x.x netmask 0xffffffe0 broadcast 62.x.x.x 
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect
        status: active
        groups: lagg 
        laggproto lacp lagghash l2,l3,l4
        laggport: igb0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
        laggport: igb1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
        laggport: igb2 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
        laggport: igb3 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>

but, after a while I see in messages something like this:
Nov 16 09:35:30 st3 kernel: igb1: Interface stopped DISTRIBUTING, possible
flapping

(always igb1)
then, after a while the server become unavailable over the network, if I open
console via IPMI I could see following:

igb1: TX(3) desc avail = 1024, pidx = 0
igb1: TX(3) desc avail = 1024, pidx = 0
igb1: TX(3) desc avail = 1024, pidx = 0
igb1: TX(3) desc avail = 1024, pidx = 0

after reboot all works fine again...

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