From: Christian Lamparter Date: Sat, 18 Apr 2009 17:39:15 +0000 (+0200) Subject: mac80211: set CLEAR_PS for pspolled frames X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=fef99929cd6b409a67a35e41f7c177bade5bca34;p=openwrt%2Fstaging%2Fblogic.git mac80211: set CLEAR_PS for pspolled frames This patch sets IEEE80211_TX_CTL_CLEAR_PS_FILT for outgoing frames for a half-wake station. this is necessary if one wants to get ps-poll working properly with a p54 ap. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 3fb04a86444d..f336cc731df6 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -409,8 +409,24 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx) sta->sta.addr); } #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ - clear_sta_flags(sta, WLAN_STA_PSPOLL); + if (test_and_clear_sta_flags(sta, WLAN_STA_PSPOLL)) { + /* + * The sleeping station with pending data is now snoozing. + * It queried us for its buffered frames and will go back + * to deep sleep once it got everything. + * + * inform the driver, in case the hardware does powersave + * frame filtering and keeps a station blacklist on its own + * (e.g: p54), so that frames can be delivered unimpeded. + * + * Note: It should be save to disable the filter now. + * As, it is really unlikely that we still have any pending + * frame for this station in the hw's buffers/fifos left, + * that is not rejected with a unsuccessful tx_status yet. + */ + info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; + } return TX_CONTINUE; }