Don't enable PROMISC when adding AP to a bridge?

[Michal Kazior]

On 14 July 2015 at 01:06, Ben Greear <greearb at candelatech.com> wrote:
> I notice some of my WLE900VX cards will lock up and not receive any packets
> after a few seconds of being in PROMISC mode.  This happens on my own
> CT firmware as well as stock firmware-2.bin.  This breaks monitor mode, of
> course, but it also breaks bridged AP mode.
>
> So, I found this patch from way back when:
> http://lists.celinuxforum.org/pipermail/bridge/2008-June/005906.html
>
> I hacked a similar thing into my 4.0.4 kernel, and now bridged mode
> AP seems much more stable (and the radio does not go into PROMISC mode,
> so it should be more efficient in a busy RF environment).
>
> Maybe this feature could be revisited?

This has already been done and mac80211 in 4.2-rc no longer propagates
promisc to drivers[1].

[1]: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/net/mac80211?id=df1404650ccbfeb76a84f301f22316be0d00a864


Michał