From 37fbd9080088f5f98ab81a6f2ad456857971a089 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 29 Sep 2011 16:04:39 +0200 Subject: mac80211: allow out-of-band EOSP notification iwlwifi has a separate EOSP notification from the device, and to make use of that properly it needs to be passed to mac80211. To be able to mix with tx_status_irqsafe and rx_irqsafe it also needs to be an "_irqsafe" version in the sense that it goes through the tasklet, the actual flag clearing would be IRQ-safe but doing it directly would cause reordering issues. This is needed in the case of a P2P GO going into an absence period without transmitting any frames that should be driver-released as in this case there's no other way to inform mac80211 that the service period ended. Note that for drivers that don't use the _irqsafe functions another version of this function will be required. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/sta_info.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'net/mac80211/sta_info.c') diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 907b42081f3c..076593bffbcf 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -1478,6 +1478,31 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_sta_block_awake); +void ieee80211_sta_eosp_irqsafe(struct ieee80211_sta *pubsta) +{ + struct sta_info *sta = container_of(pubsta, struct sta_info, sta); + struct ieee80211_local *local = sta->local; + struct sk_buff *skb; + struct skb_eosp_msg_data *data; + + trace_api_eosp(local, pubsta); + + skb = alloc_skb(0, GFP_ATOMIC); + if (!skb) { + /* too bad ... but race is better than loss */ + clear_sta_flag(sta, WLAN_STA_SP); + return; + } + + data = (void *)skb->cb; + memcpy(data->sta, pubsta->addr, ETH_ALEN); + memcpy(data->iface, sta->sdata->vif.addr, ETH_ALEN); + skb->pkt_type = IEEE80211_EOSP_MSG; + skb_queue_tail(&local->skb_queue, skb); + tasklet_schedule(&local->tasklet); +} +EXPORT_SYMBOL(ieee80211_sta_eosp_irqsafe); + void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, u8 tid, bool buffered) { -- cgit v1.2.3