Got the full trace with the help based on this thread: https://github.com/raspberrypi/linux/issues/1342 It seems that as long as the IE is at least length 5, that it is properly forwarded to brcmfmac. brcmf_vif_set_mgmt_ie ADDED ID : 221, Len: 5, OUI:11:22:33 Seems like I should go ask the brcmfmac guys for further assistance :-) Thanks for the help here! Etan > On 6 Sep 2016, at 17:04, Etan Kissling <kissling@xxxxxxxxx> wrote: > > Thanks again and sorry for taking so long to respond :-) Your comment helped pushing one step further – seems like brcmfmac doesn't like short IEs. > > Checking dmesg reveals: > [ 162.001873] brcmfmac: brcmf_parse_vndr_ies: invalid vndr ie. length is too small 4 > > Seems like there is an issue when the IE has the minimal length. > With length larger than 4, this goes away. The IE still doesn't show up, though. > > http://lxr.free-electrons.com/source/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c#L4165 > > I don't see the additional message that you referenced in my log. > > At least another line should be printed, though: > http://lxr.free-electrons.com/source/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c#L4247 > But I also don't see that one. > > Seems like I don't quite get yet how to enable debugging. > > What I tried so far is > $ sudo reboot > $ sudo ifdown wlan0 > $ sudo modprobe -r brcmfmac > $ sudo modprobe brcmfmac debug=6 //< doesn't matter 0xFFFFFF or 6 or whatever, everyone uses different levels. > $ sudo dmesg -n 7 > $ sudo hostapd -dd /etc/hostapd/hostapd.conf > $ dmesg > > I'm new to the kernel world, and finding info on enabling brcmfmac debugging is difficult. > Maybe I used the wrong search terms – would appreciate it if one could assist with this. > Do I need to set the flag in source and recompile? > > Thanks > > Etan > > > >> On 18 Jun 2016, at 07:22, Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx> wrote: >> >> >> >> On 17-06-16 22:53, Etan Kissling wrote: >>> Thanks for the response. >>> >>> Good to hear that there are no known issues about this topic from the hostap front. >>> >>> The Raspberry 3 chip is Broadcom BCM43438. >>> The chip I've used with Raspberry 1 in the dongle is Broadcom BCM43143. >>> >>> I'll check the driver. Can't imagine that the hardware doesn't support it, >>> as appending static data to a packet shouldn't be a difficult to implement feature. >> >> Difficulty is hardly ever a reason for not implementing a feature. The >> firmware for these broadcom chips is running a 802.11 stack and as such >> it determines most part of the beacon, proberesp, etc. >> >> That being said there is a firmware api to add vendor IEs. You can check >> the function brcmf_vif_set_mgmt_ie() which you find in cfg80211.c of the >> brcmfmac driver. Loading the driver with debug=6 should make the >> following debug print show up: >> >> brcmf_dbg(TRACE, "ADDED ID : %d, Len: %d, OUI:%02x:%02x:%02x\n", >> vndrie_info->vndrie.id, >> vndrie_info->vndrie.len, >> vndrie_info->vndrie.oui[0], >> vndrie_info->vndrie.oui[1], >> vndrie_info->vndrie.oui[2]); >> >> There are also a couple of error prints, but those would show up anyway. >> Hope this helps. >> >> Regards, >> Arend >>> Etan >>> >>>> On 17 Jun 2016, at 22:40, Jouni Malinen <j@xxxxx> wrote: >>>> >>>> On Wed, Jun 15, 2016 at 02:13:14PM +0000, Etan Kissling wrote: >>>>> I've retried with the latest hostapd release, but same result: The vendor IE is not being broadcast, although it is specified in hostapd.conf. >>>> >>>>> These were my complete steps, from a clean Raspbian Jessie Lite 2016-05-27 installation on a Raspberry Pi 3 Model B. >>>> >>>> It sounds like the driver used on that device does not support this. >>>> hostapd is requesting it to be added, as shown here: >>>> >>>>> + vendor_elements=DD0401020300 >>>> >>>>> nl80211: Set beacon (beacon_set=0) >>>>> nl80211: Beacon tail - hexdump(len=15): 2a 01 04 32 04 30 48 60 6c dd 04 01 02 03 00 >>>> >>>> The extra element is there at the end of the Beacon tail.. >>>> >>>>> nl80211: beacon_ies - hexdump(len=6): dd 04 01 02 03 00 >>>>> nl80211: proberesp_ies - hexdump(len=6): dd 04 01 02 03 00 >>>> >>>> And also in the specific IE lists for Beacon and Probe Response frames.. >>>> >>>> In other words, this question should be directed to whoever supports the >>>> specific Wi-Fi hardware/driver. >>>> >>>> -- >>>> Jouni Malinen PGP id EFC895FA >>> >>> >>> _______________________________________________ >>> Hostap mailing list >>> Hostap@xxxxxxxxxxxxxxxxxxx >>> http://lists.infradead.org/mailman/listinfo/hostap > > _______________________________________________ > Hostap mailing list > Hostap@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/hostap _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
