This patch series extend exiting NAN APIs to support more configuration options for NAN synchronization and a user space oriented NAN Service Discovery implementation. Existing NAN APIs are very limited and not really used, resulting in vendors using proprietary vendor commands and a need to offload NAN protocol implementations to the device firmware or driver. In this series, additional APIs are added which allow to extend the configuration of the NAN Synchronization logic and support user space oriented NAN Service Discovery implementation. With this design, wireless devices/drivers are still required to implement NAN synchronization and cluster merging. NAN Discovery Engine, may be either offloaded (keep using the existing APIs) or alternatively implemented in user space. To support user space oriented NAN Discovery Engine, the device will notify user space with %NL80211_CMD_NAN_NEXT_DW_NOTIFICATION about the upcoming Discovery Window (DW). This notification should be used as a trigger for transmission of uncsolicited multicast SDF's (i.e. unsolicited publish and active subscribe). Once SDF transmission is requested with %NL80211_CMD_FRAME, the device shall take care of the actual frame transmission during the upcoming DW. Note, this notification may be sent before the actual DW start time. For devices that may require longer DW notification processing time, user space may provide the expected latency to the device using %NL80211_NAN_CONF_DW_LEAD_TIME attribute. Note that such approach may not be appropriate for highly power efficient devices or scenarios that require long discovery sessions, as it may require the host to wake up for each DW. User space can, in turn, turn off this notification using %NL80211_NAN_CONF_NOTIFY_DW configuration flag if it doesn't intend to send unsolicited multicast SDFs to prevent unneeded wake ups. %NL80211_CMD_NAN_CLUSTER_JOINED notification shall be sent once after new NAN cluster has been started or the device has joined an existing cluster. In addition each time, cluster merge procedure results in cluster merging, user space shall be notified. This is required, as cluster ID is used as address 3 in SDF frames. Untransmitted frames should be flushed, when this notification is generated in order to prevent transmission of SDFs with invalid address 3. This patch series goal is to provide APIs to support NAN synchronization and user space oriented Service Discovery. It will be further extended in a separate patch set to support user space implementation of NAN data path (NDP) and NDL schedule establishment. --- Changes in v3: - Added %NL80211_NAN_CONF_DW_LEAD_TIME - Added capabilities to limit extra NAN attributes and vendor IEs - Changed NAN configuration parameters format/types etc - Improved documentation and bugfixes Andrei Otcheretianski (4): wifi: nl80211: Add more configuration options for NAN commands wifi: nl80211: Add NAN Discovery Window (DW) notification wifi: cfg80211: Add cluster joined notification APIs wifi: nl80211: Add more NAN capabilities include/net/cfg80211.h | 91 ++++++++ include/uapi/linux/nl80211.h | 203 +++++++++++++++++- net/wireless/nl80211.c | 389 +++++++++++++++++++++++++++++++---- net/wireless/trace.h | 35 ++++ 4 files changed, 681 insertions(+), 37 deletions(-) -- 2.47.1
