Re: [PATCH 0/7] nl80211: rx path for control port frames (enabled only for wpa_supplicant)

Markus Theil <[email protected]>
Newsgroups gmane.linux.drivers.hostap
Message-ID <[email protected]>
On 1/23/20 9:42 AM, Markus Theil wrote:
> On 1/13/20 3:58 PM, Markus Theil wrote:
>> This patch series adds rx control port support over nl80211. Control 
>> port
>> over nl80211 delivers all EAPOL and PREAUTH frames to userspace. This 
>> conflicts
>> with the current hostapd handling of pre-auth frames. Therefore, this 
>> feature
>> gets disabled for hostapd. Furthermore a pending kernel patch is 
>> necessary to
>> forward pre-auth frames from userspace (otherwise handled by Linux 
>> bridge code).
>>
>> The corresponding Linux patches for pre-auth support for hostapd are:
>>   - nl80211: add src and dst mac attributes
>>   - nl80211: use src and dst addr attribute for control port tx/rx
> These patches are now squashed into one patch and are still pending, 
> but they are not needed
> for the current patch series to work, as hostapd support for rx over 
> control port is still disabled
> in this patch series.
>> Furthermore another kernel patch is needed, in order to avoid a 
>> deadlock:
>>   - cfg80211: fix deadlocks in autodisconnect work
>
> Please note, that the patch above is now included in the relevant 
> stable and lts kernels 4.9.98 and 5.4.14 as well as 5.5-rc7.
> Therefore, no deadlock should happen when running a recent kernel and 
> the hwsim tests. The deadlock happened in the
> ap_bss_add_reuse_existing test.
>
* not 4.9.98 but 4.19.98
>> This patch enables wpa_supplicant to use control port rx over nl80211 
>> for both
>> EAPOL and PREAUTH frames. wpa_supplicant connects noticeably faster 
>> in my tests
>> with this patch series applied.
>>
>> Markus Theil (7):
>>    nl80211: rename nl_connect to nl_connect_and_ctrl
>>    nl80211: tie connect_or_ctrl handle to bss init/destroy
>>    nl80211: add method for sending messages with connection owner
>>      attributes set
>>    nl80211: add helper method for control port usage
>>    nl80211: use and/or set socker owner where necessary
>>    nl80211: disable control port for AP mode
>>    nl80211: correctly handle deauth from scan with ctrl port rx
>>
>>   src/drivers/driver_nl80211.c      | 177 ++++++++++++++++++++----------
>>   src/drivers/driver_nl80211.h      |   3 +-
>>   src/drivers/driver_nl80211_scan.c |   2 +-
>>   3 files changed, 123 insertions(+), 59 deletions(-)
>>
>
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