iwm0 in trunk strange behviour

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iwm0 in trunk strange behviour

Johan Huldtgren-3
hello,

i recently got a Thinkpad X1 Carbon gen6. I'm seeing something with
regard to wireless that strike me as at least slightly unexpected.
I enabled debug on the interface but did not recompile my kernel with
IWM_DEBUG, if that will help let me know.

tl;dr

1) If the AP changes channel iwm0 does not always detect this and
recover, manual intervention is needed

2) With a trunk setup after changing channels iwm0 is assigned a
bogus IP.

Details on issue #1:

iwm0 and em0 are in a trunk failover configuration.

$ cat /etc/hostname.iwm0
join mynet wpa wpaakms 802.1x
debug
-powersave
up

$ cat /etc/hostname.em0
up

$ cat /etc/hostname.trunk0
trunkproto failover trunkport em0
trunkport iwm0
dhcp


When I connect to a certain AP (in this case a Ruckus 7363 configured
with SmartSelect - which will try to select the best channel at any
given time) coming up from boot it'll connect just fine, but at some
point the AP will decide the current channel is no longer optimal and
change it. At that time iwm0 will stop working. Looking at the output
of 'ifconfig iwm0' and comparing it to 'ifconfig iwm0 scan' will
reveal that the channel has changed. I can 'solve' this with
'ifconfig iwm0 -chan OLDCHAN chan NEWCHAN' and it recovers.

Here is a recent example, I notice that I can't reach the network, and
take a look:

$ ifconfig iwm0
iwm0: flags=8947<UP,BROADCAST,DEBUG,RUNNING,PROMISC,SIMPLEX,MULTICAST>
mtu 1500
          lladdr e8:6a:64:c0:64:89
          index 1 priority 4 llprio 3
          trunk: trunkdev trunk0
          groups: wlan
          media: IEEE802.11 autoselect (HT-MCS0 mode 11n)
          status: active
          ieee80211: join mynet chan 5 bssid xx:xx:xx:xx:xx:xx 85%
wpaprotos wpa2 wpaakms 802.1x wpaciphers ccmp wpagroupcipher ccmp

I do a scan (and I'm somewhere there are other visible APs, so grep out
the one I'm connected to)

$ ifconfig iwm0 scan | grep mynet
          ieee80211: join mynet chan 5 bssid xx:xx:xx:xx:xx:xx 82%
wpaprotos wpa2 wpaakms 802.1x wpaciphers ccmp wpagroupcipher ccmp
                  nwid mynet chan 8 bssid xx:xx:xx:xx:xx:xx 82% HT-MCS15
privacy,short_preamble,short_slottime,wpa2,802.1x
                  nwid mynet chan 100 bssid xx:xx:xx:xx:xx:xy 49%
HT-MCS15 privacy,spectrum_mgmt,short_slottime,wpa2,802.1x

I can see that I'm joined to channel 5, but the AP is now using
channel 8, so a quick change:

$ doas ifconfig iwm0 -chan 5 chan 8
$ ifconfig iwm0
iwm0: flags=8947<UP,BROADCAST,DEBUG,RUNNING,PROMISC,SIMPLEX,MULTICAST>
mtu 1500
          lladdr e8:6a:64:c0:64:89
          index 1 priority 4 llprio 3
          trunk: trunkdev trunk0
          groups: wlan
          media: IEEE802.11 autoselect (DS1)
          status: no network
          ieee80211: join mynet chan 8 wpaprotos wpa2 wpaakms 802.1x
wpaciphers ccmp wpagroupcipher ccmp
          inet 0.0.0.5 netmask 0xff000000 broadcast 0.255.255.255

and we're off to the races again.

Details on issue #2:

Notice the last line in the ifconfig output above since I use trunk
the inet line would be on the trunk, but it seems that doing a
'ifconfig iwm0 -chan X chan Y' will have a funny side effect where I
now end up with an 'inet' line where the last octet will be whatever
channel I removed. I verified this with:

$ doas ifconfig iwm0 -chan 8 chan 100

$ ifconfig iwm0
iwm0: flags=8947<UP,BROADCAST,DEBUG,RUNNING,PROMISC,SIMPLEX,MULTICAST>
mtu 1500
          lladdr e8:6a:64:c0:64:89
          index 1 priority 4 llprio 3
          trunk: trunkdev trunk0
          groups: wlan
          media: IEEE802.11 autoselect (HT-MCS2 mode 11n)
          status: active
          ieee80211: join mynet chan 100 bssid xx:xx:xx:xx:xx:xy 64%
wpaprotos wpa2 wpaakms 802.1x wpaciphers ccmp wpagroupcipher ccmp
          inet 0.0.0.8 netmask 0xff000000 broadcast 0.255.255.255

Note how it changed to end in 8 now. This seems to have no adverse
effect, but it doesn't seem correct.

plain dmesg followed by iwm0 debug info from /var/log/messages below

thanks,

.jh

---

OpenBSD 6.5-beta (GENERIC.MP) #808: Tue Mar 19 12:08:49 MDT 2019
     [hidden email]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 16908124160 (16124MB)
avail mem = 16385372160 (15626MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 3.0 @ 0x4f03b000 (63 entries)
bios0: vendor LENOVO version "N23ET62W (1.37 )" date 02/19/2019
bios0: LENOVO 20KHCTO1WW
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SSDT SSDT TPM2 UEFI SSDT SSDT HPET APIC MCFG
ECDT SSDT SSDT BOOT BATB SSDT SSDT SSDT LPIT WSMT SSDT SSDT SSDT DBGP
DBG2 MSDM DMAR NHLT ASF! FPDT UEFI
acpi0: wakeup devices GLAN(S4) XHC_(S3) XDCI(S4) HDAS(S4) RP01(S4)
PXSX(S4) RP02(S4) PXSX(S4) PXSX(S4) RP04(S4) PXSX(S4) RP05(S4) PXSX(S4)
RP06(S4) PXSX(S4) RP07(S4) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpihpet0 at acpi0: 23999999 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1690.24 MHz, 06-8e-0a
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 23MHz
cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1.1.1, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1696.03 MHz, 06-8e-0a
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1696.02 MHz, 06-8e-0a
cpu2:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu2: 256KB 64b/line 8-way L2 cache
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1696.03 MHz, 06-8e-0a
cpu3:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu3: 256KB 64b/line 8-way L2 cache
cpu3: smt 0, core 3, package 0
cpu4 at mainbus0: apid 1 (application processor)
cpu4: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1696.03 MHz, 06-8e-0a
cpu4:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu4: 256KB 64b/line 8-way L2 cache
cpu4: smt 1, core 0, package 0
cpu5 at mainbus0: apid 3 (application processor)
cpu5: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1696.03 MHz, 06-8e-0a
cpu5:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu5: 256KB 64b/line 8-way L2 cache
cpu5: smt 1, core 1, package 0
cpu6 at mainbus0: apid 5 (application processor)
cpu6: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1696.03 MHz, 06-8e-0a
cpu6:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu6: 256KB 64b/line 8-way L2 cache
cpu6: smt 1, core 2, package 0
cpu7 at mainbus0: apid 7 (application processor)
cpu7: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1696.03 MHz, 06-8e-0a
cpu7:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu7: 256KB 64b/line 8-way L2 cache
cpu7: smt 1, core 3, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xf0000000, bus 0-127
acpiec0 at acpi0
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 2 (RP01)
acpiprt2 at acpi0: bus -1 (RP02)
acpiprt3 at acpi0: bus 3 (RP03)
acpiprt4 at acpi0: bus -1 (RP04)
acpiprt5 at acpi0: bus 4 (RP05)
acpiprt6 at acpi0: bus -1 (RP06)
acpiprt7 at acpi0: bus -1 (RP07)
acpiprt8 at acpi0: bus -1 (RP08)
acpiprt9 at acpi0: bus 5 (RP09)
acpiprt10 at acpi0: bus -1 (RP10)
acpiprt11 at acpi0: bus -1 (RP11)
acpiprt12 at acpi0: bus -1 (RP12)
acpiprt13 at acpi0: bus -1 (RP13)
acpiprt14 at acpi0: bus -1 (RP14)
acpiprt15 at acpi0: bus -1 (RP15)
acpiprt16 at acpi0: bus -1 (RP16)
acpiprt17 at acpi0: bus -1 (RP17)
acpiprt18 at acpi0: bus -1 (RP18)
acpiprt19 at acpi0: bus -1 (RP19)
acpiprt20 at acpi0: bus -1 (RP20)
acpiprt21 at acpi0: bus -1 (RP21)
acpiprt22 at acpi0: bus -1 (RP22)
acpiprt23 at acpi0: bus -1 (RP23)
acpiprt24 at acpi0: bus -1 (RP24)
acpicpu0 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
C1(1000@1 mwait.1), PSS
acpicpu1 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
C1(1000@1 mwait.1), PSS
acpicpu2 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
C1(1000@1 mwait.1), PSS
acpicpu3 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
C1(1000@1 mwait.1), PSS
acpicpu4 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
C1(1000@1 mwait.1), PSS
acpicpu5 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
C1(1000@1 mwait.1), PSS
acpicpu6 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
C1(1000@1 mwait.1), PSS
acpicpu7 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33),
C1(1000@1 mwait.1), PSS
acpipwrres0 at acpi0: PUBS, resource for XHC_
acpitz0 at acpi0: critical temperature is 128 degC
acpipci0 at acpi0 PCI0: 0x00000010 0x00000011 0x00000000
acpithinkpad0 at acpi0
acpiac0 at acpi0: AC unit online
acpibat0 at acpi0: BAT0 model "01AV430" serial  3465 type LiP oem "SMP"
"LEN0100" at acpi0 not configured
"INT3403" at acpi0 not configured
acpicmos0 at acpi0
"ALPS0000" at acpi0 not configured
"INT0E0C" at acpi0 not configured
acpibtn0 at acpi0: SLPB
"PNP0C14" at acpi0 not configured
acpibtn1 at acpi0: LID_
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"INT3400" at acpi0 not configured
"STM7304" at acpi0 not configured
"USBC000" at acpi0 not configured
acpivideo0 at acpi0: GFX0
acpivout at acpivideo0 not configured
cpu0: Enhanced SpeedStep 1690 MHz: speeds: 2001, 2000, 1900, 1800, 1700,
1500, 1400, 1300, 1200, 1100, 1000, 800, 700, 600, 500, 400 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 8G Host" rev 0x08
inteldrm0 at pci0 dev 2 function 0 "Intel UHD Graphics 620" rev 0x07
drm0 at inteldrm0
inteldrm0: msi
error: [drm:pid0:i915_firmware_load_error_print] *ERROR* failed to load
firmware i915/kbl_dmc_ver1.bin (-22)
inteldrm0: 2560x1440, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
"Intel Core 6G Thermal" rev 0x08 at pci0 dev 4 function 0 not configured
"Intel Core GMM" rev 0x00 at pci0 dev 8 function 0 not configured
xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x21: msi,
xHCI 1.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev
3.00/1.00 addr 1
pchtemp0 at pci0 dev 20 function 2 "Intel 100 Series Thermal" rev 0x21
"Intel 100 Series MEI" rev 0x21 at pci0 dev 22 function 0 not configured
ppb0 at pci0 dev 28 function 0 "Intel 100 Series PCIE" rev 0xf1: msi
pci1 at ppb0 bus 2
iwm0 at pci1 dev 0 function 0 "Intel Dual Band Wireless-AC 8265" rev
0x78, msi
ppb1 at pci0 dev 28 function 2 "Intel 100 Series PCIE" rev 0xf1: msi
pci2 at ppb1 bus 3
vendor "Intel", unknown product 0x7360 (class wireless unknown subclass
0x40, rev 0x01) at pci2 dev 0 function 0 not configured
ppb2 at pci0 dev 28 function 4 "Intel 100 Series PCIE" rev 0xf1: msi
pci3 at ppb2 bus 4
nvme0 at pci3 dev 0 function 0 "SanDisk WD Black NVMe" rev 0x00: msi,
NVMe 1.3
nvme0: WDC PC SN720 SDAQNTW-512G-1001, firmware 10130101, serial
1849AE802053
scsibus1 at nvme0: 1 targets
sd0 at scsibus1 targ 0 lun 0: <NVMe, WDC PC SN720 SDA, 1013> SCSI4
0/direct fixed
sd0: 488386MB, 512 bytes/sector, 1000215216 sectors
ppb3 at pci0 dev 29 function 0 "Intel 100 Series PCIE" rev 0xf1: msi
pci4 at ppb3 bus 5
pcib0 at pci0 dev 31 function 0 "Intel 200 Series LPC" rev 0x21
"Intel 100 Series PMC" rev 0x21 at pci0 dev 31 function 2 not configured
azalia0 at pci0 dev 31 function 3 "Intel 200 Series HD Audio" rev 0x21:
msi
azalia0: codecs: Realtek/0x0285, Intel/0x280b, using Realtek/0x0285
audio0 at azalia0
ichiic0 at pci0 dev 31 function 4 "Intel 100 Series SMBus" rev 0x21:
apic 2 int 16
iic0 at ichiic0
em0 at pci0 dev 31 function 6 "Intel I219-V" rev 0x21: msi, address
e8:6a:64:c0:64:89
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
wsmouse1 at pms0 mux 0
pms0: Synaptics clickpad, firmware 8.16, 0x1e2b1 0x940300
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
vmm0 at mainbus0: VMX/EPT
efifb at mainbus0 not configured
ugen0 at uhub0 port 7 "Intel Bluetooth" rev 2.00/0.10 addr 2
uvideo0 at uhub0 port 8 configuration 1 interface 0 "SunplusIT Inc
Integrated Camera" rev 2.01/54.20 addr 3
video0 at uvideo0
ugen1 at uhub0 port 9 "vendor 0x06cb product 0x009a" rev 2.00/1.64 addr
4
umass0 at uhub0 port 15 configuration 1 interface 0 "Generic USB3.0-CRW"
rev 3.00/29.08 addr 5
umass0: using SCSI over Bulk-Only
scsibus2 at umass0: 2 targets, initiator 0
sd1 at scsibus2 targ 1 lun 0: <Generic-, SD/MMC CRW, 1.00> SCSI4
0/direct removable serial.0bda0328008282014000
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
sd2 at scsibus4 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006> SCSI2 0/direct
fixed
sd2: 282307MB, 512 bytes/sector, 578166256 sectors
root on sd2a (fce3c61df7f7e718.a) swap on sd2b dump on sd2b

Mar 22 10:22:45 xasthur /bsd: iwm0: received msg 1/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xx
Mar 22 10:22:45 xasthur /bsd: iwm0: sending msg 2/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xx
Mar 22 10:22:45 xasthur /bsd: iwm0: received msg 3/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xx
Mar 22 10:22:45 xasthur /bsd: iwm0: sending msg 4/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xx
Mar 22 10:22:52 xasthur /bsd: iwm0: sending action to xx:xx:xx:xx:xx:xx
on channel 5 mode 11n
Mar 22 10:29:08 xasthur /bsd: iwm0: sending probe_req to
xx:xx:xx:xx:xx:xx on channel 5 mode 11n
Mar 22 10:29:12 xasthur /bsd: iwm0: RUN -> SCAN
Mar 22 10:29:15 xasthur /bsd: iwm0: end active scan
Mar 22 10:29:15 xasthur /bsd:  - 00:1d:d4:72:7f:e0    1   +35 54M   ess  
privacy   rsn! "Navy59"!
Mar 22 10:29:15 xasthur /bsd:  - 00:7f:28:69:95:96    6   +27 54M   ess  
privacy   rsn! "XSQSC"!
Mar 22 10:29:15 xasthur /bsd:  - 10:78:5b:21:77:51    1   +43 54M   ess  
privacy   rsn! "FiOS-UL20M"!
Mar 22 10:29:15 xasthur /bsd:  - 14:2d:27:53:9f:ea    1   +30 54M   ess  
privacy   rsn! "HP-Print-EA-LaserJet Pro MFP"!
Mar 22 10:29:15 xasthur /bsd:  - 22:86:8c:4d:ab:0e   11   +21 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 10:29:15 xasthur /bsd:  + xx:xx:xx:xx:xx:xx    8   +62 54M   ess  
privacy   rsn  "mynet"
Mar 22 10:29:15 xasthur /bsd:  + xx:xx:xx:xx:xx:xy  100   +55 54M   ess  
privacy   rsn  "mynet"
Mar 22 10:29:15 xasthur /bsd:  - 32:86:8c:41:2f:1e    6   +32 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 48:5d:36:5f:80:cc    6   +39 54M   ess  
privacy   rsn! "FiOS-UL20M"!
Mar 22 10:29:15 xasthur /bsd:  - 60:02:92:b9:24:30    1   +38 54M   ess  
privacy   rsn! "spectraF2"!
Mar 22 10:29:15 xasthur /bsd:  - 6a:02:92:b9:24:30    1   +36 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 10:29:15 xasthur /bsd:  - 6e:02:92:b9:24:30    1   +38 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 6e:be:f7:eb:4b:60   11   +20 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 76:02:92:b9:24:30    1   +37 54M   ess  
privacy   rsn  ""!
Mar 22 10:29:15 xasthur /bsd:  - 7e:e3:0e:be:8a:b9    6   +25 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 80:ea:96:ef:73:66    1   +26 54M   ess  
privacy   rsn! "Disabled 2"!
Mar 22 10:29:15 xasthur /bsd:  - 82:66:73:ef:96:e0    1   +25 54M   ess  
privacy   rsn! "D2 Guest Network"!
Mar 22 10:29:15 xasthur /bsd:  - 84:00:2d:ea:e9:58    1   +58 54M   ess  
privacy   rsn! "HOME-8341-2.4"!
Mar 22 10:29:15 xasthur /bsd:  - 8c:3b:ad:26:c7:c8  157   +21 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 8e:00:2d:ea:e9:58    1   +53 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 10:29:15 xasthur /bsd:  - 92:00:2d:53:14:f8    1   +21 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 92:00:2d:ea:e9:58    1   +57 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 96:00:2d:53:15:00   36   +21 54M   ess  
privacy   rsn  "XFINITY"!
Mar 22 10:29:15 xasthur /bsd:  - 96:3b:ad:26:c7:c5    3   +25 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 96:ad:43:42:35:50   48   +21 54M   ess  
privacy   rsn  ""!
Mar 22 10:29:15 xasthur /bsd:  - 9a:00:2d:ea:e9:58    1   +58 54M   ess  
privacy   rsn  ""!
Mar 22 10:29:15 xasthur /bsd:  - 9a:0f:6f:11:67:b0    1   +17 54M   ess  
privacy   rsn! ""!
Mar 22 10:29:15 xasthur /bsd:  - 9a:ad:43:42:35:50   48   +21 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 10:29:15 xasthur /bsd:  - c8:a7:0a:9d:be:42   11   +36 54M   ess  
privacy   rsn! "FiOS-SETV6"!
Mar 22 10:29:15 xasthur /bsd:  - c8:a7:0a:9e:f0:b8   11   +45 54M   ess  
privacy   rsn! "FiOS-IC8EW"!
Mar 22 10:29:15 xasthur /bsd:  - ca:7c:d1:0e:8f:c0  153   +21 54M   ess  
privacy   rsn  ""!
Mar 22 10:29:15 xasthur /bsd:  - dc:fe:07:ad:64:98    1   +43 54M   ess  
privacy   rsn! "DCDARWIN1"!
Mar 22 10:29:15 xasthur /bsd:  - ee:fe:07:ad:64:a0   40   +37 54M   ess  
privacy   rsn  "XFINITY"!
Mar 22 10:29:15 xasthur /bsd:  - f2:fe:07:ad:64:98    1   +43 54M   ess  
privacy   rsn  ""!
Mar 22 10:29:15 xasthur /bsd:  - f8:a0:97:89:7a:24    6   +30 54M   ess  
privacy   rsn! "netgear123"!
Mar 22 10:29:15 xasthur /bsd:  - fa:8f:ca:3d:b8:aa    1   +29 54M   ess  
      no!  rsn! ""!
Mar 22 10:29:15 xasthur /bsd: iwm0: SCAN -> AUTH
Mar 22 10:29:15 xasthur /bsd: iwm0: sending auth to xx:xx:xx:xx:xx:xy on
channel 100 mode 11a
Mar 22 10:29:15 xasthur /bsd: iwm0: AUTH -> ASSOC
Mar 22 10:29:15 xasthur /bsd: iwm0: sending assoc_req to
xx:xx:xx:xx:xx:xy on channel 100 mode 11a
Mar 22 10:29:15 xasthur /bsd: iwm0: ASSOC -> RUN
Mar 22 10:29:15 xasthur /bsd: iwm0: associated with xx:xx:xx:xx:xx:xy
ssid "mynet" channel 100 start MCS 0 long preamble short slot time HT
enabled
Mar 22 10:29:15 xasthur /bsd: iwm0: missed beacon threshold set to 7
beacons, beacon interval is 100 TU
Mar 22 10:29:16 xasthur /bsd: iwm0: received msg 1/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xy
Mar 22 10:29:16 xasthur /bsd: iwm0: sending msg 2/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xy
Mar 22 10:29:16 xasthur /bsd: iwm0: received msg 3/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xy
Mar 22 10:29:16 xasthur /bsd: iwm0: sending msg 4/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xy
Mar 22 10:29:16 xasthur /bsd: iwm0: sending action to xx:xx:xx:xx:xx:xy
on channel 100 mode 11n
Mar 22 10:29:17 xasthur last message repeated 3 times
Mar 22 10:29:17 xasthur /bsd: iwm0: received msg 1/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xy
Mar 22 10:29:17 xasthur /bsd: iwm0: sending msg 2/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xy
Mar 22 10:29:17 xasthur /bsd: iwm0: received msg 3/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xy
Mar 22 10:29:17 xasthur /bsd: iwm0: sending msg 4/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xy
Mar 22 10:36:41 xasthur /bsd: iwm0: received msg 1/2 of the group key
handshake from xx:xx:xx:xx:xx:xy
Mar 22 10:36:41 xasthur /bsd: iwm0: sending msg 2/2 of the group key
handshake to xx:xx:xx:xx:xx:xy
Mar 22 12:00:11 xasthur /bsd: unknown displayid tag 1
Mar 22 12:00:12 xasthur last message repeated 4 times
Mar 22 12:00:15 xasthur /bsd: usbd_free_xfer: xfer=0xfffffd84a107e4b0
not free
Mar 22 12:09:01 xasthur /bsd: iwm0: RUN -> INIT
Mar 22 12:09:01 xasthur /bsd: iwm0: begin active scan
Mar 22 12:09:01 xasthur /bsd: iwm0: INIT -> SCAN
Mar 22 12:09:04 xasthur /bsd: iwm0: end active scan
Mar 22 12:09:04 xasthur /bsd: iwm0: AP xx:xx:xx:xx:xx:xy "mynet" score
52
Mar 22 12:09:04 xasthur /bsd:  - 00:7f:28:69:95:96    6!  +25 54M   ess  
privacy   rsn! "XSQSC"!
Mar 22 12:09:04 xasthur /bsd:  - 06:1d:d4:72:7f:e0    1!  +36 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 12:09:04 xasthur /bsd:  - 0a:a0:97:89:7a:24    6!  +27 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 12:09:04 xasthur /bsd:  - 10:78:5b:21:77:56   48!  +31 54M   ess  
privacy   rsn! "FiOS-UL20M-5G"!
Mar 22 12:09:04 xasthur /bsd:  - 10:78:5b:21:77:58   48!  +31 54M   ess  
privacy   rsn! ""!
Mar 22 12:09:04 xasthur /bsd:  - 10:86:8c:41:2f:1e    6!  +36 54M   ess  
privacy   rsn! "Wangnet"!
Mar 22 12:09:04 xasthur /bsd:  - 10:86:8c:41:2f:23  161!  +21 54M   ess  
privacy   rsn! "Wangnet"!
Mar 22 12:09:04 xasthur /bsd:  - 14:2d:27:53:9f:ea    1!  +33 54M   ess  
privacy   rsn! "HP-Print-EA-LaserJet Pro MFP"!
Mar 22 12:09:04 xasthur /bsd:  - 22:86:8c:41:2f:1e    6!  +37 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 12:09:04 xasthur /bsd:  + xx:xx:xx:xx:xx:xx    8   +60 54M   ess  
privacy   rsn  "mynet"
Mar 22 12:09:04 xasthur /bsd:  - xx:xx:xx:xx:xx:xy   60!  +41 54M   ess  
privacy   rsn  "mynet"
Mar 22 12:09:04 xasthur /bsd:  - 32:86:8c:41:2f:1e    6!  +37 54M   ess  
privacy   rsn! ""!
Mar 22 12:09:04 xasthur /bsd:  - 3a:a0:97:89:7a:24    6!  +36 54M   ess  
privacy   rsn  ""!
Mar 22 12:09:04 xasthur /bsd:  - 48:5d:36:5f:80:cc    6!  +30 54M   ess  
privacy   rsn! "FiOS-UL20M"!
Mar 22 12:09:04 xasthur /bsd:  - 52:86:8c:41:2f:1e    6!  +35 54M   ess  
privacy   rsn  ""!
Mar 22 12:09:04 xasthur /bsd:  - 52:86:8c:41:2f:23  161!  +21 54M   ess  
privacy   rsn  ""!
Mar 22 12:09:04 xasthur /bsd:  - 60:02:92:b9:24:30    1!  +45 54M   ess  
privacy   rsn! "spectraF2"!
Mar 22 12:09:04 xasthur /bsd:  - 6a:02:92:b9:24:30    1!  +45 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 12:09:04 xasthur /bsd:  - 6e:02:92:b9:24:30    1!  +45 54M   ess  
privacy   rsn! ""!
Mar 22 12:09:04 xasthur /bsd:  - 76:02:92:b2:40:f0  161!  +31 54M   ess  
privacy   rsn  ""!
Mar 22 12:09:04 xasthur /bsd:  - 76:02:92:b9:24:30    1!  +45 54M   ess  
privacy   rsn  ""!
Mar 22 12:09:04 xasthur /bsd:  - 7a:02:92:b9:24:30    1!  +45 54M   ess  
privacy   rsn! ""!
Mar 22 12:09:04 xasthur /bsd:  - 7e:e3:0e:be:8a:b9    6!  +26 54M   ess  
privacy   rsn! ""!
Mar 22 12:09:04 xasthur /bsd:  - 80:ea:96:ef:73:66    1!  +31 54M   ess  
privacy   rsn! "Disabled 2"!
Mar 22 12:09:04 xasthur /bsd:  - 82:66:73:ef:96:e0    1!  +30 54M   ess  
privacy   rsn! "D2 Guest Network"!
Mar 22 12:09:04 xasthur /bsd:  - 84:00:2d:ea:e9:58    1!  +51 54M   ess  
privacy   rsn! "HOME-8341-2.4"!
Mar 22 12:09:04 xasthur /bsd:  - 84:a9:3e:2b:41:2e    6!  +33 54M   ess  
privacy   rsn! "DIRECT-2D-HP OfficeJet Pro 6960"!
Mar 22 12:09:04 xasthur /bsd:  - 8a:00:2d:ea:e9:60   36!  +48 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 12:09:04 xasthur /bsd:  - 8e:00:2d:ea:e9:58    1!  +47 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 12:09:04 xasthur /bsd:  - 92:00:2d:ea:e9:58    1!  +52 54M   ess  
privacy   rsn! ""!
Mar 22 12:09:04 xasthur /bsd:  - 9a:00:2d:ea:e9:58    1!  +51 54M   ess  
privacy   rsn  ""!
Mar 22 12:09:04 xasthur /bsd:  - c8:a7:0a:87:fb:f0  153!  +33 54M   ess  
privacy   rsn! "FiOS-DSAAB-5G"!
Mar 22 12:09:04 xasthur /bsd:  - c8:a7:0a:87:fb:f2   11!  +49 54M   ess  
privacy   rsn! "FiOS-DSAAB"!
Mar 22 12:09:04 xasthur /bsd:  - c8:a7:0a:9d:be:40  149!  +22 54M   ess  
privacy   rsn! "FiOS-SETV6-5G"!
Mar 22 12:09:04 xasthur /bsd:  - c8:a7:0a:9d:be:42   11!  +38 54M   ess  
privacy   rsn! "FiOS-SETV6"!
Mar 22 12:09:04 xasthur /bsd:  - c8:a7:0a:9e:f0:b8   11!  +44 54M   ess  
privacy   rsn! "FiOS-IC8EW"!
Mar 22 12:09:04 xasthur /bsd:  - ca:3a:6b:a6:40:eb   11!  +24 54M   ess  
privacy   rsn! "DIRECT-roku-772-135E33"!
Mar 22 12:09:04 xasthur /bsd:  - ca:a7:0a:87:fb:f1  153!  +33 54M   ess  
privacy   rsn! 0x00000000000000000000000000!
Mar 22 12:09:04 xasthur /bsd:  - ca:a7:0a:9d:be:41  149!  +22 54M   ess  
privacy   rsn! 0x00000000000000000000000000!
Mar 22 12:09:04 xasthur /bsd:  - d8:6c:63:de:80:be    6!  +22 54M   ess  
privacy   rsn! "1409"!
Mar 22 12:09:04 xasthur /bsd:  - da:6c:63:de:80:bc    6!  +22 54M   ess  
privacy   rsn! "Welcome to 1409"!
Mar 22 12:09:04 xasthur /bsd:  - dc:fe:07:ad:64:98    1!  +42 54M   ess  
privacy   rsn! "DCDARWIN1"!
Mar 22 12:09:04 xasthur /bsd:  - e0:88:5d:c7:6b:5c   11!  +22 54M   ess  
privacy   rsn! "HOME-6B5C"!
Mar 22 12:09:04 xasthur /bsd:  - e2:fe:07:ad:64:a0   40!  +36 54M   ess  
privacy   rsn! ""!
Mar 22 12:09:04 xasthur /bsd:  - e6:fe:07:ad:64:98    1!  +41 54M   ess  
      no!  rsn! "xfinitywifi"!
Mar 22 12:09:04 xasthur /bsd:  - e6:fe:07:ad:64:a0   40!  +36 54M   ess  
privacy   rsn  ""!
Mar 22 12:09:04 xasthur /bsd:  - ea:fe:07:ad:64:98    1!  +41 54M   ess  
privacy   rsn! ""!
Mar 22 12:09:04 xasthur /bsd:  - f2:fe:07:ad:64:98    1!  +42 54M   ess  
privacy   rsn  ""!
Mar 22 12:09:04 xasthur /bsd:  - fa:8f:ca:3d:b8:aa    1!  +32 54M   ess  
      no!  rsn! ""!
Mar 22 12:09:04 xasthur /bsd: iwm0: SCAN -> AUTH
Mar 22 12:09:04 xasthur /bsd: iwm0: sending auth to xx:xx:xx:xx:xx:xx on
channel 8 mode 11g
Mar 22 12:09:04 xasthur /bsd: iwm0: AUTH -> ASSOC
Mar 22 12:09:04 xasthur /bsd: iwm0: sending assoc_req to
xx:xx:xx:xx:xx:xx on channel 8 mode 11g
Mar 22 12:09:04 xasthur /bsd: iwm0: received msg 1/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xx
Mar 22 12:09:04 xasthur /bsd: iwm0: sending msg 2/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xx
Mar 22 12:09:04 xasthur /bsd: iwm0: ASSOC -> RUN
Mar 22 12:09:04 xasthur /bsd: iwm0: associated with xx:xx:xx:xx:xx:xx
ssid "mynet" channel 8 start MCS 0 short preamble short slot time HT
enabled
Mar 22 12:09:04 xasthur /bsd: iwm0: missed beacon threshold set to 7
beacons, beacon interval is 100 TU
Mar 22 12:09:05 xasthur /bsd: iwm0: received msg 1/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xx
Mar 22 12:09:05 xasthur /bsd: iwm0: sending msg 2/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xx
Mar 22 12:09:05 xasthur /bsd: iwm0: received msg 3/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xx
Mar 22 12:09:05 xasthur /bsd: iwm0: sending msg 4/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xx
Mar 22 12:09:05 xasthur /bsd: iwm0: sending action to xx:xx:xx:xx:xx:xx
on channel 8 mode 11n
Mar 22 12:09:06 xasthur last message repeated 2 times
Mar 22 12:09:08 xasthur /bsd: iwm0: received msg 1/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xx
Mar 22 12:09:08 xasthur /bsd: iwm0: sending msg 2/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xx
Mar 22 12:09:08 xasthur /bsd: iwm0: received msg 3/4 of the 4-way
handshake from xx:xx:xx:xx:xx:xx
Mar 22 12:09:08 xasthur /bsd: iwm0: sending msg 4/4 of the 4-way
handshake to xx:xx:xx:xx:xx:xx
Mar 22 12:09:10 xasthur /bsd: iwm0: sending action to xx:xx:xx:xx:xx:xx
on channel 8 mode 11n

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Re: iwm0 in trunk strange behviour

Stefan Sperling-5
On Fri, Mar 22, 2019 at 09:17:50PM -0400, Johan Huldtgren wrote:

> hello,
>
> i recently got a Thinkpad X1 Carbon gen6. I'm seeing something with
> regard to wireless that strike me as at least slightly unexpected.
> I enabled debug on the interface but did not recompile my kernel with
> IWM_DEBUG, if that will help let me know.
>
> tl;dr
>
> 1) If the AP changes channel iwm0 does not always detect this and
> recover, manual intervention is needed

At present the iwm driver is relying on the firmware to signal that it
is missing beacons from the AP. This was first implemented and tested on
a 7265 device. I don't know if this mechanism works on 8265 devices.

I have seen situations where the firmware is failing to report an
event even though the AP has gone away. I haven't dug into it yet.

A long-term fix would be to move this check away from firmware into our
opw net80211 wireless code. The stack is already receiving and checking
beacons for other reasons, so it would be able to keep track of the
validity of current APs connection, if someone added the code to do so.

If the current code isn't working for you, I blame the magic black
box Intel firwmare for this. However, see below...

> 2) With a trunk setup after changing channels iwm0 is assigned a
> bogus IP.
>
> Details on issue #1:
>
> iwm0 and em0 are in a trunk failover configuration.
>
> $ cat /etc/hostname.iwm0
> join mynet wpa wpaakms 802.1x

You are using 802.1x, which means wpa_supplicant from the ports
tree is involved. I never use 802.1x myself, but I supose you'll
need to manually kick wpa_supplicant somehow to regain a connection
when the AP changes channel.

Until proper 802.1x support arrives in the base system (if ever),
automatic roaming on OpenBSD will only work with WPA2 PSK.

> debug
> -powersave

You can remove the -powersave option. It does nothing.

> I can see that I'm joined to channel 5, but the AP is now using
> channel 8, so a quick change:
>
> $ doas ifconfig iwm0 -chan 5 chan 8

The -chan option does not take an argument, so ifconfig will interpret
'5' as an address in this command.

Furthermore, you are hard-coding channel 8, so the wireless stack will from
now on never use a channel other than 8 until you run ifconfig iwm0 -chan.
You are overriding automatic channel selection and this might well be the
reasons why you are seeing a roaming problem in the first place.

> Details on issue #2:

>          inet 0.0.0.8 netmask 0xff000000 broadcast 0.255.255.255
>
> Note how it changed to end in 8 now. This seems to have no adverse
> effect, but it doesn't seem correct.

The -chan option does not take an argument.

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Re: iwm0 in trunk strange behviour

Johan Huldtgren-3
hello,

> You are using 802.1x, which means wpa_supplicant from the ports
> tree is involved. I never use 802.1x myself, but I supose you'll
> need to manually kick wpa_supplicant somehow to regain a connection
> when the AP changes channel.

noted.

> Until proper 802.1x support arrives in the base system (if ever),
> automatic roaming on OpenBSD will only work with WPA2 PSK.

thanks, didn't even occur to me that 802.1x was complicating things.
I have a second location with a similar AP but where it's just
configured with WPA2 PSK, next time I am there I'll see if it
happens there too. However I suspect my current location has more
channel switching because of the large amount of other APs in
range.

> You can remove the -powersave option. It does nothing.

thanks, to satisfy my own curiosity is there a way to know this
without being familiar with the code?

> The -chan option does not take an argument, so ifconfig will interpret
> '5' as an address in this command.

*ugh* of course, if I had just read the manpage a bit more carefully,
I'd have avoided this, sorry about that.

> Furthermore, you are hard-coding channel 8, so the wireless stack will
> from
> now on never use a channel other than 8 until you run ifconfig iwm0
> -chan.
> You are overriding automatic channel selection and this might well be
> the
> reasons why you are seeing a roaming problem in the first place.

ah, that makes sense, however I saw this issue before I've ever did
that.
it would happen from a fresh boot where it would automatically(?) pick
the best channel. But regardless your point stands, I can definitely see
this being responsible for all issues encountered after the first time
it's done.

thanks again for your detailed explanations,

.jh