Hi At ChromeOS we are looking at utilizing MAC address randomization. There are some ChromeOS use-cases where it can be useful. I checked upstream kernel and Android source code to understand the current state of this feature.
This feature is supported in Android and a few products use it already for Preferred Network Offload scan. There is a HAL method that allows to set MAC OUI [1] that makes 3 first octets predefined and the rest of MAC address is randomized. Kernel passes this OUI value to firmware where the randomization is implemented. I checked current upstream kernel and did not find any API for enabling/dealing with MAC address randomization. If a firmware devs want to add the feature easily then there should be some standard API for enabling/configuring MAC randomization. In fact there is one mention of the feature in upstream source tree - macaddr_* fields in "struct iwl_tof_range_req_cmd" of iwlwifi driver. It allows to enable/disable randomization for 11MC measurement. The MAC randomization could be used by other drivers for many use-cases and I think it worth making it a part of standard cfg80211 API. Is it something maintainers are interested in? Does anybody work on it already? [1] https://android.googlesource.com/platform/hardware/libhardware_legacy/+/master/include/hardware_legacy/wifi_hal.h -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
