From 46fa38e84b656f80edf83d21144221b0cad18d61 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 3 May 2016 16:58:00 +0300 Subject: mac80211: allow software PS-Poll/U-APSD with AP_LINK_PS When using RSS, frames might not be processed in the correct order, and thus AP_LINK_PS must be used; most likely with firmware keeping track of the powersave state, this is the case in iwlwifi now. In this case, the driver can use ieee80211_sta_ps_transition() to still have mac80211 manage powersave buffering. However, for U-APSD and PS-Poll this isn't sufficient. If the device can't manage that entirely on its own, mac80211's code should be used. To allow this, export two functions: ieee80211_sta_uapsd_trigger() and ieee80211_sta_pspoll(). Signed-off-by: Johannes Berg --- include/net/mac80211.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include') diff --git a/include/net/mac80211.h b/include/net/mac80211.h index ce2f6e3be3cf..be30b0549b88 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -3996,6 +3996,33 @@ static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta, return ret; } +/** + * ieee80211_sta_pspoll - PS-Poll frame received + * @sta: currently connected station + * + * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS flag set, + * use this function to inform mac80211 that a PS-Poll frame from a + * connected station was received. + * This must be used in conjunction with ieee80211_sta_ps_transition() + * and possibly ieee80211_sta_uapsd_trigger(); calls to all three must + * be serialized. + */ +void ieee80211_sta_pspoll(struct ieee80211_sta *sta); + +/** + * ieee80211_sta_uapsd_trigger - (potential) U-APSD trigger frame received + * @sta: currently connected station + * @tid: TID of the received (potential) trigger frame + * + * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS flag set, + * use this function to inform mac80211 that a (potential) trigger frame + * from a connected station was received. + * This must be used in conjunction with ieee80211_sta_ps_transition() + * and possibly ieee80211_sta_pspoll(); calls to all three must be + * serialized. + */ +void ieee80211_sta_uapsd_trigger(struct ieee80211_sta *sta, u8 tid); + /* * The TX headroom reserved by mac80211 for its own tx_status functions. * This is enough for the radiotap header. -- cgit v1.2.3