nl80211: add extra-ies only if allowed by driver (continued)

[Nicolas Cavallari]

On 19/05/2025 16:54, Gregor Feierabend wrote:
> Hi!
> 
> The issue of wpa_supplicant-2.10 breaking broadcom-wl based adapters as
> reported by Étienne Morice/David Bauer on 30 Jan 2022 persists in wpa_supplicant-2.11 (see: https://lists.infradead.org/pipermail/hostap/2022-January/040185.html).
> 
> Was it an oversight to not include the suggested changes in version 2.11?
> 
> Below is the earlier proposed patch, adjusted to wpa_supplicant-2.11.

A different patch is currently in the git repository:

commit 2fe7a2b80e9ebb7ed550d82e4d4661104b489791
Author: Jouni Malinen <j at w1.fi>
Date:   Fri Dec 27 22:36:29 2024 +0200

Do not add extra IEs to scan request if they do not fit driver limit

For now, each separate IE is being checked on its own, so this is not a
complete check on the total length, but a useful step in avoiding some
known issues with drivers that do not support any IEs being added. A
more complete validation would need rules on determining which IE is of
higher priority than the other ones, but that might not be needed unless
there are drivers that have nonzero, but still quite small, limit on
extra IEs.

Signed-off-by: Jouni Malinen <j at w1.fi>

commit 66442d1bcbf2c06c29b55ff8930dbe7d46b60e98
Author: Jouni Malinen <j at w1.fi>
Date:   Fri Dec 27 20:43:42 2024 +0200

nl80211: Fetch maximum length of extra IE(s) for Probe Request frames

This can be helpful in determining which IE(s) to add to Probe Request
frames in scan commands based on driver capabilities.

Signed-off-by: Jouni Malinen <j at w1.fi>