Re: ifconfig scan while connected
On Sun, Sep 7, 2014 at 5:56 PM, Fabian Raetz fabian.ra...@gmail.com wrote: On Sun, Sep 07, 2014 at 02:11:04PM +0200, Mike Burns wrote: A `sudo ifconfig iwn0 scan' works but only if the device is disconnected. Is this expected behavior? Is this specific to my card? Am I interpreting the results correctly? Hi, this is a known problem with the iwn(4) driver. I'm in the process of backporting a patch from FreeBSD, which seems to fix the problem. Running here with this patch for an hour or so and can scan with iwn running and it continues to work. I'll probably send a patch to tech@ next week. I'm also interested in this. ciao! David
ifconfig scan while connected
A `sudo ifconfig iwn0 scan' works but only if the device is disconnected. Is this expected behavior? Is this specific to my card? Am I interpreting the results correctly? I'd like to be able to see other networks while remaining connected. These are the results I am interpreting: $ sudo ifconfig iwn0 scan iwn0: flags=28843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,NOINET6 mtu 1500 lladdr 84:3a:4b:0a:ae:80 priority: 4 groups: wlan egress media: IEEE802.11 autoselect (OFDM54 mode 11g) status: active ieee80211: nwid ComHemAA chan 1 bssid a0:21:b7:e8:2c:29 212dB wpakey 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef wpaprotos wpa1,wpa2 wpaakms psk wpaciphers tkip,ccmp wpagroupcipher tkip inet 192.168.0.13 netmask 0xff00 broadcast 192.168.0.255 $ sudo ifconfig iwn0 -wpakey $ sudo ifconfig iwn0 scan iwn0: flags=28843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,NOINET6 mtu 1500 lladdr 84:3a:4b:0a:ae:80 priority: 4 groups: wlan egress media: IEEE802.11 autoselect (OFDM54) status: no network ieee80211: nwid ComHemE9E964 nwid dlink chan 6 bssid 00:1c:f0:84:01:f0 171dB 54M short_preamble,short_slottime [ ... and so on ... ] pcidump and dmesg below. Want anything else? $ sudo pcidump -vv 3:0:0 3:0:0: Intel Centrino Advanced-N 6205 0x: Vendor ID: 8086 Product ID: 0085 0x0004: Command: 0006 Status: 0010 0x0008: Class: 02 Subclass: 80 Interface: 00 Revision: 96 0x000c: BIST: 00 Header Type: 00 Latency Timer: 00 Cache Line Size: 10 0x0010: BAR mem 64bit addr: 0xf0c0/0x2000 0x0018: BAR empty () 0x001c: BAR empty () 0x0020: BAR empty () 0x0024: BAR empty () 0x0028: Cardbus CIS: 0x002c: Subsystem Vendor ID: 8086 Product ID: c220 0x0030: Expansion ROM Base Address: 0x0038: 0x003c: Interrupt Pin: 01 Line: 0a Min Gnt: 00 Max Lat: 00 0x00c8: Capability 0x01: Power Management 0x00d0: Capability 0x05: Message Signaled Interrupts (MSI) 0x00e0: Capability 0x10: PCI Express Link Speed: 2.5 / 2.5 GT/s Link Width: x1 / x1 $ dmesg OpenBSD 5.6 (GENERIC.MP) #320: Mon Aug 4 23:46:51 MDT 2014 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 8255762432 (7873MB) avail mem = 8027209728 (7655MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xdae9d000 (71 entries) bios0: vendor LENOVO version G6ET93WW (2.53 ) date 02/04/2013 bios0: LENOVO 3444CUU acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SLIC TCPA SSDT SSDT SSDT HPET APIC MCFG ECDT FPDT ASF! UEFI UEFI MSDM SSDT SSDT UEFI SSDT DBG2 acpi0: wakeup devices LID_(S4) SLPB(S3) IGBE(S4) EXP2(S4) XHCI(S3) EHC1(S3) EHC2(S3) HDEF(S4) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 14318179 Hz acpimadt0 at acpi0 addr 0xfee0: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1896.03 MHz 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS 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 99MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.1.2, IBE cpu1 at mainbus0: apid 1 (application processor) cpu1: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1895.70 MHz 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 1, core 0, package 0 cpu2 at mainbus0: apid 2 (application processor) cpu2: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1895.70 MHz 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS cpu2: 256KB 64b/line 8-way L2 cache cpu2: smt 0, core 1, package 0 cpu3 at mainbus0: apid 3 (application processor) cpu3: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1895.70 MHz cpu3:
Re: ifconfig scan while connected
On 2014-09-07 17.11.09 +0200, Marcin Piotr Pawlowski wrote: Why You need to see other networks while remaining connected? Some example scenarios: - If I move about my office I'd like to see what other SSIDs are available in case I'd like to switch to one. - If I'm tethering through my phone I'd like to see whether any other wifi has appeared so that I can switch to it. - A first step toward getting something like NetworkManager/wicd working requires this. Well, it doesn't -- one could completely disconnect from the Internet every time they want to try their program -- but I don't imagine that inspiring someone to work on such a task. I'm also bringing it up in general because every other system I know does this, I don't know of any security issues around it, and maybe by reporting it here someone will change it or give me advice on how to change it, thus making OpenBSD that much better. (I poked around if_iwn.c but didn't see anything obvious, but I honestly don't know what the correct change should be.) -Mike [I had previously sent this off-list, but unintentionally.]
Re: ifconfig scan while connected
On Sun, Sep 07, 2014 at 02:11:04PM +0200, Mike Burns wrote: A `sudo ifconfig iwn0 scan' works but only if the device is disconnected. Is this expected behavior? Is this specific to my card? Am I interpreting the results correctly? Hi, this is a known problem with the iwn(4) driver. I'm in the process of backporting a patch from FreeBSD, which seems to fix the problem. Running here with this patch for an hour or so and can scan with iwn running and it continues to work. I'll probably send a patch to tech@ next week. Regards, Fabian I'd like to be able to see other networks while remaining connected. These are the results I am interpreting: $ sudo ifconfig iwn0 scan iwn0: flags=28843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,NOINET6 mtu 1500 lladdr 84:3a:4b:0a:ae:80 priority: 4 groups: wlan egress media: IEEE802.11 autoselect (OFDM54 mode 11g) status: active ieee80211: nwid ComHemAA chan 1 bssid a0:21:b7:e8:2c:29 212dB wpakey 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef wpaprotos wpa1,wpa2 wpaakms psk wpaciphers tkip,ccmp wpagroupcipher tkip inet 192.168.0.13 netmask 0xff00 broadcast 192.168.0.255 $ sudo ifconfig iwn0 -wpakey $ sudo ifconfig iwn0 scan iwn0: flags=28843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,NOINET6 mtu 1500 lladdr 84:3a:4b:0a:ae:80 priority: 4 groups: wlan egress media: IEEE802.11 autoselect (OFDM54) status: no network ieee80211: nwid ComHemE9E964 nwid dlink chan 6 bssid 00:1c:f0:84:01:f0 171dB 54M short_preamble,short_slottime [ ... and so on ... ] pcidump and dmesg below. Want anything else? $ sudo pcidump -vv 3:0:0 3:0:0: Intel Centrino Advanced-N 6205 0x: Vendor ID: 8086 Product ID: 0085 0x0004: Command: 0006 Status: 0010 0x0008: Class: 02 Subclass: 80 Interface: 00 Revision: 96 0x000c: BIST: 00 Header Type: 00 Latency Timer: 00 Cache Line Size: 10 0x0010: BAR mem 64bit addr: 0xf0c0/0x2000 0x0018: BAR empty () 0x001c: BAR empty () 0x0020: BAR empty () 0x0024: BAR empty () 0x0028: Cardbus CIS: 0x002c: Subsystem Vendor ID: 8086 Product ID: c220 0x0030: Expansion ROM Base Address: 0x0038: 0x003c: Interrupt Pin: 01 Line: 0a Min Gnt: 00 Max Lat: 00 0x00c8: Capability 0x01: Power Management 0x00d0: Capability 0x05: Message Signaled Interrupts (MSI) 0x00e0: Capability 0x10: PCI Express Link Speed: 2.5 / 2.5 GT/s Link Width: x1 / x1 $ dmesg OpenBSD 5.6 (GENERIC.MP) #320: Mon Aug 4 23:46:51 MDT 2014 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 8255762432 (7873MB) avail mem = 8027209728 (7655MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xdae9d000 (71 entries) bios0: vendor LENOVO version G6ET93WW (2.53 ) date 02/04/2013 bios0: LENOVO 3444CUU acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SLIC TCPA SSDT SSDT SSDT HPET APIC MCFG ECDT FPDT ASF! UEFI UEFI MSDM SSDT SSDT UEFI SSDT DBG2 acpi0: wakeup devices LID_(S4) SLPB(S3) IGBE(S4) EXP2(S4) XHCI(S3) EHC1(S3) EHC2(S3) HDEF(S4) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 14318179 Hz acpimadt0 at acpi0 addr 0xfee0: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1896.03 MHz 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS 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 99MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.1.2, IBE cpu1 at mainbus0: apid 1 (application processor) cpu1: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1895.70 MHz 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 1, core 0, package 0 cpu2 at mainbus0: apid 2 (application processor) cpu2: Intel(R) Core(TM) i7-3667U CPU @ 2.00GHz, 1895.70 MHz cpu2:
Re: ifconfig scan while connected
On 2014-09-07 17.56.09 +0200, Fabian Raetz wrote: On Sun, Sep 07, 2014 at 02:11:04PM +0200, Mike Burns wrote: A `sudo ifconfig iwn0 scan' works but only if the device is disconnected. Is this expected behavior? Is this specific to my card? Am I interpreting the results correctly? I'm in the process of backporting a patch from FreeBSD, which seems to fix the problem. Running here with this patch for an hour or so and can scan with iwn running and it continues to work. I'll probably send a patch to tech@ next week. Fantastic. I'll try it when you send it. -Mike
