[Bug 267514] AXGE(4) ASIX AX88179A ue0: link state changed to DOWN

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267514

--- Comment #3 from karl@denninger.net ---
(In reply to karl from comment #2)

More context....

pcEngines machine, the same problem *does* show up on 12.2 (I have a back-rev
bootable card, and see the same pattern) so whatever this is, its not due to
something between 12.x and 13.x.

Here's the dmesg from the box's boot:

Copyright (c) 1992-2021 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 13.1-STABLE #1 stable/13-n253099-5971781ee78b: Sat Nov 19 11:27:42 EST
2022
   
karl@NewFS.denninger.net:/work/OBJ/Crochet-work-AMD13/usr/src/amd64.amd64/sys/KSD-SMP
amd64
FreeBSD clang version 14.0.5 (https://github.com/llvm/llvm-project.git
llvmorg-14.0.5-0-gc12386ae247c)
VT(vga): resolution 640x480
CPU: AMD GX-412TC SOC                                (998.19-MHz K8-class CPU)
  Origin="AuthenticAMD"  Id=0x730f01  Family=0x16  Model=0x30  Stepping=1
 
Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
 
Features2=0x3ed8220b<SSE3,PCLMULQDQ,MON,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AESNI,XSAVE,OSXSAVE,AVX,F16C>
  AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
  AMD
Features2=0x1d4037ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,SKINIT,WDT,Topology,PNXC,DBE,PTSC,PL2I>
  Structured Extended Features=0x8<BMI1>
  XSAVE Features=0x1<XSAVEOPT>
  SVM: NP,NRIP,AFlush,DAssist,NAsids=8
  TSC: P-state invariant, performance statistics
real memory  = 2013057024 (1919 MB)
avail memory = 1911078912 (1822 MB)
Event timer "LAPIC" quality 100
ACPI APIC Table: <CORE   COREBOOT>
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s)
arc4random: WARNING: initial seeding bypassed the cryptographic random device
because it was not yet seeded and the knob 'bypass_before_seeding' was enabled.
ioapic1: MADT APIC ID 5 != hw id 0
ioapic0 <Version 2.1> irqs 0-23
ioapic1 <Version 2.1> irqs 24-55
Launching APs: 2 1 3
random: entropy device external interface
kbd0 at kbdmux0
vtvga0: <VT VGA driver>
smbios0: <System Management BIOS> at iomem 0xf3740-0xf375e
smbios0: Version: 2.7
aesni0: <AES-CBC,AES-CCM,AES-GCM,AES-ICM,AES-XTS>
acpi0: <CORE COREBOOT>
acpi0: Power Button (fixed)
cpu0: <ACPI CPU> on acpi0
atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0
atrtc0: registered as a time-of-day clock, resolution 1.000000s
Event timer "RTC" frequency 32768 Hz quality 0
attimer0: <AT timer> port 0x40-0x43 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
apei0: <ACPI Platform Error Interface> on acpi0
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 950
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x818-0x81b on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 2.2 on pci0
pcib1: failed to allocate initial I/O port window: 0x1000-0x1fff
pci1: <ACPI PCI bus> on pcib1
igb0: <Intel(R) I211 (Copper)> port 0x2000-0x201f mem
0xfe700000-0xfe71ffff,0xfe720000-0xfe723fff at device 0.0 on pci1
igb0: NVM V0.6 imgtype1
igb0: Using 1024 TX descriptors and 1024 RX descriptors
igb0: Using 2 RX queues 2 TX queues
igb0: Using MSI-X interrupts with 3 vectors
igb0: Ethernet address: 00:0d:b9:46:71:88
igb0: netmap queues/slots: TX 2/1024, RX 2/1024
pcib2: <ACPI PCI-PCI bridge> at device 2.4 on pci0
pcib2: failed to allocate initial I/O port window: 0x2000-0x2fff
pci2: <ACPI PCI bus> on pcib2
igb1: <Intel(R) I211 (Copper)> port 0x4000-0x401f mem
0xfe800000-0xfe81ffff,0xfe820000-0xfe823fff at device 0.0 on pci2
igb1: NVM V0.6 imgtype1
igb1: Using 1024 TX descriptors and 1024 RX descriptors
igb1: Using 2 RX queues 2 TX queues
igb1: Using MSI-X interrupts with 3 vectors
igb1: Ethernet address: 00:0d:b9:46:71:89
igb1: netmap queues/slots: TX 2/1024, RX 2/1024
pci0: <encrypt/decrypt> at device 8.0 (no driver attached)
xhci0: <AMD FCH USB 3.0 controller> mem 0xfeb22000-0xfeb23fff at device 16.0 on
pci0
xhci0: 32 bytes context size, 64-bit DMA
usbus0 on xhci0
usbus0: 5.0Gbps Super Speed USB v3.0
ahci0: <AMD Hudson-2 AHCI SATA controller> port
0x3010-0x3017,0x3020-0x3023,0x3018-0x301f,0x3024-0x3027,0x3000-0x300f mem
0xfeb25000-0xfeb253ff at device 17.0 on pci0
ahci0: AHCI v1.30 with 2 6Gbps ports, Port Multiplier supported with FBS
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich1: <AHCI channel> at channel 1 on ahci0
ehci0: <AMD FCH USB 2.0 controller> mem 0x80000000-0x800000ff at device 18.0 on
pci0
usbus1: EHCI version 1.0
usbus1 on ehci0
usbus1: 480Mbps High Speed USB v2.0
ehci1: <AMD FCH USB 2.0 controller> mem 0xfeb25400-0xfeb254ff at device 19.0 on
pci0
usbus2: EHCI version 1.0
usbus2 on ehci1
usbus2: 480Mbps High Speed USB v2.0
isab0: <PCI-ISA bridge> at device 20.3 on pci0
isa0: <ISA bus> on isab0
sdhci_pci0: <Generic SD HCI> mem 0xfeb25500-0xfeb255ff at device 20.7 on pci0
sdhci_pci0: 1 slot(s) allocated
mmc0: <MMC/SD bus> on sdhci_pci0
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
uart0: console (115200,n,8,1)
orm0: <ISA Option ROM> at iomem 0xef000-0xeffff pnpid ORM0000 on isa0
uart1: <16550 or compatible> at port 0x2f8 irq 3 on isa0
hwpstate0: <Cool`n'Quiet 2.0> on cpu0
Timecounter "TSC" frequency 998127581 Hz quality 1000
Timecounters tick every 1.000 msec
load_dn_sched dn_sched FQ_PIE loaded
load_dn_sched dn_sched PRIO loaded
load_dn_sched dn_sched QFQ loaded
load_dn_sched dn_sched RR loaded
load_dn_sched dn_sched WF2Q+ loaded
load_dn_sched dn_sched FIFO loaded
load_dn_sched dn_sched FQ_CODEL loaded
load_dn_aqm dn_aqm CODEL loaded
load_dn_aqm dn_aqm PIE loaded
ugen1.1: <AMD EHCI root HUB> at usbus1
ugen0.1: <AMD XHCI root HUB> at usbus0
ugen2.1: <AMD EHCI root HUB> at usbus2
uhub0 on usbus1
uhub0: <AMD EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1
uhub1 on usbus2
uhub1: <AMD EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus2
uhub2 on usbus0
uhub2: <AMD XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
mmcsd0: 16GB <SDHC SL16G 8.0 SN A4981A22 MFG 01/2017 by 3 SD> at mmc0
50.0MHz/4bit/65535-block
Trying to mount root from ufs:/dev/mmcsd0s2a [ro]...
uhub2: 4 ports with 4 removable, self powered
uhub0: 2 ports with 2 removable, self powered
uhub1: 2 ports with 2 removable, self powered
ugen0.2: <TP-Link USB 10/100/1000 LAN> at usbus0
ugen1.2: <vendor 0x0438 product 0x7900> at usbus1
uhub3 on uhub0
uhub3: <vendor 0x0438 product 0x7900, class 9/0, rev 2.00/0.18, addr 2> on
usbus1
ugen2.2: <vendor 0x0438 product 0x7900> at usbus2
uhub4 on uhub1
uhub4: <vendor 0x0438 product 0x7900, class 9/0, rev 2.00/0.18, addr 2> on
usbus2
uhub3: 4 ports with 4 removable, self powered
uhub4: 4 ports with 4 removable, self powered
random: unblocking device.
intsmb0: <AMD FCH SMBus Controller> at device 20.0 on pci0
smbus0: <System Management Bus> on intsmb0
lo0: link state changed to UP
igb0: link state changed to UP
igb1: link state changed to UP
igb1.3: link state changed to UP
ure0 on uhub2
ure0: <TP-Link USB 10/100/1000 LAN, class 0/0, rev 3.00/30.00, addr 1> on
usbus0
miibus0: <MII bus> on ure0
rgephy0: <RTL8251/8153 1000BASE-T media interface> PHY 0 on miibus0
rgephy0:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT-FDX,
1000baseT-FDX-master, auto
ue0: <USB Ethernet> on ure0
ue0: Ethernet address: 28:87:ba:3e:55:04
[fib_algo] inet.0 (bsearch4#24) rebuild_fd_flm: switching algo to
radix4_lockless
ue0: link state changed to DOWN
ipfw2 (+ipv6) initialized, divert loadable, nat loadable, default to deny,
logging disabled
Security policy loaded: MAC/ntpd (mac_ntpd)
ue0: link state changed to UP
ue0: link state changed to DOWN

Changing (on the switch) the negotiable speeds down from 1Gbps/FDX does not
change behavior, nor does disabling power management on the switch port
involved.  The igb interfaces do not flap at all, nor do ue interfaces on the
Pi3 that is on the same network segment and switch (physically adjacent to this
machine.)

This box is the network gateway to the outside (cable modem is attached to it)
and does have and route both Ipv4 and v6.  Prior to adding the ue0 interface it
exhibited no misbehavior at all (and hasn't through several revisions of
FreeBSD.)

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