[Bug 254341] igb hung every 5-20 hours. ifconfig down+up solves the problem for next N hours

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254341

--- Comment #4 from Vladislav Shabanov <vlad.shabanov at gmail.com> ---
$ ifconfig -a 
igb0: flags=...
   .....
igb1: flags=
   .....
lo0: flags=
   .....
pflog0: flags=0
   .....

I know that em and igb now are merged together. But the system names this
device igb0, igb1, ...
Technically it's I350.
I use this 'igb' in bug report title because other users with this problem
probably will search by this word.

$ pciconf -lBbceVv | grep igb0
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
    bar   [10] = type Memory, range 32, base 0xfb120000, size 131072, enabled
    bar   [18] = type I/O Port, range 32, base 0xe020, size 32, enabled
    bar   [1c] = type Memory, range 32, base 0xfb144000, size 16384, enabled
    cap 01[40] = powerspec 3  supports D0 D3  current D0
    cap 05[50] = MSI supports 1 message, 64 bit, vector masks enabled with 1
message
    cap 11[70] = MSI-X supports 10 messages
                 Table in map 0x1c[0x0], PBA in map 0x1c[0x2000]
    cap 10[a0] = PCI-Express 2 endpoint max data 256(512) FLR NS
                 link x4(x4) speed 5.0(5.0) ASPM disabled(L0s/L1)
    ecap 0001[100] = AER 2 0 fatal 0 non-fatal 1 corrected
    ecap 0003[140] = Serial 1 ac1f6bffff028ac4
    ecap 000e[150] = ARI 1
    ecap 0010[160] = SR-IOV 1 IOV disabled, Memory Space disabled, ARI disabled
                     0 VFs configured out of 8 supported
                     First VF RID Offset 0x0180, VF RID Stride 0x0004
                     VF Device ID 0x1520
                     Page Sizes: 4096 (enabled), 8192, 65536, 262144, 1048576,
4194304
    ecap 0017[1a0] = TPH Requester 1
    ecap 0018[1c0] = LTR 1
    ecap 000d[1d0] = ACS 1

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