From 691eb61bcfa1e98bdbbd29388bc518a76ae2fdd4 Mon Sep 17 00:00:00 2001 From: Simon Wunderlich Date: Fri, 24 Jan 2014 23:48:29 +0100 Subject: [PATCH] mac80211: send ibss probe responses with noack flag Responding to probe requests for scanning clients will often create excessive retries, as it happens quite often that the scanning client already left the channel. Therefore do it like hostapd and send probe responses for wildcard SSID only once by using the noack flag. Signed-off-by: Simon Wunderlich [fix typo & 'wildcard SSID' in commit log] Signed-off-by: Johannes Berg --- net/mac80211/ibss.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index a35f37980e70..531477a62f4b 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -1465,6 +1465,11 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, memcpy(((struct ieee80211_mgmt *) skb->data)->da, mgmt->sa, ETH_ALEN); ibss_dbg(sdata, "Sending ProbeResp to %pM\n", mgmt->sa); IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; + + /* avoid excessive retries for probe request to wildcard SSIDs */ + if (pos[1] == 0) + IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_NO_ACK; + ieee80211_tx_skb(sdata, skb); } -- 2.20.1