I have posted a patch to add 802.11ac support to the #OpenBSD iwm #wifi driver to the tech@ mailing list:
https://marc.info/?l=openbsd-tech&m=164744368217970&w=2
This patch needs testing on Intel 7260, 7265, 3160, 3165, 3168, 8260, 8265, 9260, and 9560 devices.
It would be a lot of work to do all this by myself, so please help with testing if you can :flan_thumbs: