Commits #2 and #3 implement the actual power saving mechanism for mesh. When the current peer link states allow doze state, the HW is configured accordingly. STA wake up from doze state for 1) sending their own beacon and tailing awake window 2) receiving beacons of peers they are in light sleep towards In these two situations a Mesh Peer Service Period may be initiated to extend the awake phase to transmit/receive frames. Design goal was to implement most PS routines in mac80211 to keep maintainability high and allow simple driver adaption. Since mesh PS requires waiting for beacon/multicasts (CAB) per STA, these routines are re-implemented in mac80211. The implementation should be capable of managing multiple concurrent mesh vif, although this has rarely been tested, yet. (For more info see https://github.com/cozybit/open80211s/wiki /Mesh-Powersave-Implementation-Notes.) On some test devices (WNDR3700/3800 with openwrt r35284) I experience frequent crashes ("Data bus error"). Adding udelay to ath9k_hw_set_power_awake and ath9k_set_power_network_sleep as described in https://dev.openwrt.org/ticket/9107 seems to help. I am unsure if I just stumble over a bug or cause it myself here. v2: mac80211: - trigger wakeups in HW (Johannes) - got rid of hrtimer usage (Johannes) - got rid of pre-TBTT wakeup margin - got rid of HW sleep/awake status variable in local - fix deep sleep wakeup schedule ath9k: - program HW's TIM timer registers to perform wakeups Marco Porsch (3): mac80211: move mesh sync beacon handler into neighbour_update mac80211: mesh power save doze scheduling ath9k: mesh powersave support drivers/net/wireless/ath/ath9k/ath9k.h | 1 + drivers/net/wireless/ath/ath9k/beacon.c | 21 +- drivers/net/wireless/ath/ath9k/hw.c | 20 +- drivers/net/wireless/ath/ath9k/main.c | 67 ++++++- include/net/mac80211.h | 29 +++ net/mac80211/ieee80211_i.h | 17 +- net/mac80211/mesh.c | 25 ++- net/mac80211/mesh.h | 22 ++- net/mac80211/mesh_plink.c | 17 +- net/mac80211/mesh_ps.c | 316 +++++++++++++++++++++++++++++++ net/mac80211/mesh_sync.c | 47 ++--- net/mac80211/sta_info.c | 3 + net/mac80211/sta_info.h | 10 + net/mac80211/tx.c | 2 + 14 files changed, 541 insertions(+), 56 deletions(-) -- 1.7.9.5 -- 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
