[OpenWrt-Devel] OpenWrt cfg80211.h station_info incompatibility with kernel+mac80211 [was: B.A.T.M.A.N. V leaves the nest v2]

[Felix Fietkau]

On 2016-01-21 15:26, Sven Eckelmann wrote:
> On Thursday 21 January 2016 15:03:10 Sven Eckelmann wrote:
>> On Thursday 21 January 2016 14:55:01 Felix Fietkau wrote:
>> > > @Felix, would it be ok for you when I propose a
>> > > "*-sync-cfg80211-station_info.patch" for the 3.18 generic kernel 
> patches?
>> > > Or do you have a good idea how to force the openwrt-routing batman-adv 
> package
>> > > against the cfg80211.h of compat-wireless?
>> > The openwrt mac80211 package exports its headers to
>> > $(STAGING_DIR)/usr/include/mac80211
>> > 
>> > You could just make the batman-adv package use those includes.
>> 
>> Thanks, missed that. I will prepare a pull request for openwrt-routing.
> 
> Hm, didn't work out so well. It basically explodes right away because 
> possible_net_t, possible_read_pnet, possible_write_pnet is not defined on 
> v3.18 when not using the mac80211 backporting headers. And when usign the 
> backporting headers then it will explode because it conflicts with batman-
> adv's own backporting stuff. And without the batman-adv's backporting headers 
> it will also not compile due to missing backporting hacks.
I think in the short term it would be a good idea to identify what's
missing in the mac80211 backport support and make patches for it.
You should also rebase those on top of backports.git and submit them
upstream.

For a long term solution, you guys should probably start pushing for
full batman-adv integration in kernel backports. Might be useful for
increasing adoption of the latest stuff even outside of OpenWrt.

- Felix
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