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
