As a lot of you know we have a new regulatory implementation for Linux wireless now [1]. We have kept the old regulatory implementation through a Kconfig option, CONFIG_WIRELESS_OLD_REGULATORY. Distributions are slowly converging to start setting this to "N" -- as of 2.6.28. Distributions are also now shipping wireless-regdb [2] and CRDA [3]. In the case of the absence of either of these we world roam. For the 2.6.30 kernel we have added a new set of world roaming improvements which include the ability to enable active scanning when a beacon from an AP is found [4], and to also default to do passive scan on the 5 GHz band [6]. We have had CONFIG_WIRELESS_OLD_REGULATORY in the feature removal schedule marked for 2.6.29 but we have avoided doing so due to the the distribution-catchup game and OLD_REG was still being set to default to "Y". Now with 2.6.29 released 2.6.30 merge window is closing, and I'd like to review our current updated plans for the feature removal of the old regulatory infrastructure. The plan is to ship 2.6.30 with OLD_REG defaulting to "N", move along the ieee80211_regdom module parameter to be available when OLD_REG is set to "N" and to not remove OLD_REG until distributions being shipped start carrying decent userspace replacements to provide regulatory hint information to the kernel. For example, the cheap way to do this is to simply pick your country someway and use iw to set the regulatory domain from part of an init script. The next best thing is to get Network Manager to support country selection and then pass that to wpa_supplicant to inform the kernel. The impressive solution will be to integrate GeoClue [6] to the standard Linux desktop and to make use of all location-aware inputs on the desktop to determine your location. To this end the GNOME and the Linux Foundation have Google Summer of Code projects [6] to accomplish this. We will work with the GNOME folks to work together on this so we can each help mentor each component involved respectively. For details of the current ideas please see the links to the project. I should briefly note that this helps mostly Linux wireless drivers which completely lack regulatory information or which rely on it completely from userspace (examples are drivers which rely on the Windows registry files for regdomain information). For drivers which already have regulatory information that is always respected of course, but we still let users help compliance even further. For further details please to our regulatory implementation documentation [1]. Our plan then is to not remove OLD_REG completely until we see some decent userspace replacement on the Linux desktop being shipped and help mentor the Linux wireless GeoClue GSoC 2009 project [8] (hint: applications were opened yesterday, deadline is April 03). For those still not clear exactly on what CONFIG_WIRELESS_OLD_REGULATORY means please see our documentation [9] on this. So this is the plan... if there are any questions, hate mail or comments please let me know. Luis [1] http://wireless.kernel.org/en/developers/Regulatory [2] http://wireless.kernel.org/en/developers/Regulatory#Theregulatorydatabase [3] http://wireless.kernel.org/en/developers/Regulatory/CRDA [4] http://marc.info/?l=linux-wireless&m=123519365605046&w=2 [5] http://marc.info/?l=linux-wireless&m=123519439405554&w=2 [6] http://www.freedesktop.org/wiki/Software/GeoClue [7] https://www.linuxfoundation.org/en/Google_Summer_of_Code_2009#802.11_Wireless [8] https://www.linuxfoundation.org/en/Google_Summer_of_Code_2009#802.11_Wireless [9] http://wireless.kernel.org/en/developers/Regulatory#Oldregulatoryimplementation -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
