mac80211: update sta->last_rx on acked tx frames

When clients are idle for too long, hostapd sends nullfunc frames for
probing. When those are acked by the client, the idle time needs to be
updated.

To make this work (and to avoid unnecessary probing), update sta->last_rx
whenever an ACK was received for a tx packet. Only do this if the flag
IEEE80211_HW_REPORTS_TX_ACK_STATUS is set.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 368837fe3b800e87f408039ef4d36e84bfaa7069..78dc2e99027e06b8a9fc37f5bdf7f06483476f2b 100644 (file)
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -180,6 +180,9 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
        struct ieee80211_local *local = sta->local;
        struct ieee80211_sub_if_data *sdata = sta->sdata;
 
+       if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+               sta->last_rx = jiffies;
+
        if (ieee80211_is_data_qos(mgmt->frame_control)) {
                struct ieee80211_hdr *hdr = (void *) skb->data;
                u8 *qc = ieee80211_get_qos_ctl(hdr);