Return-path: Received: from packetmixer.de ([79.140.42.25]:46295 "EHLO mail.mail.packetmixer.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751806AbaAXWsn (ORCPT ); Fri, 24 Jan 2014 17:48:43 -0500 From: Simon Wunderlich To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Simon Wunderlich Subject: [PATCH] mac80211: send ibss probe responses with noack flag Date: Fri, 24 Jan 2014 23:48:29 +0100 Message-Id: <1390603709-8041-1-git-send-email-sw@simonwunderlich.de> (sfid-20140124_234846_895744_E7A8105C) Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Simon Wunderlich Responding to probe requests for scanning clients will often create excessive rtries, as it happens quite often that the scanning client already left the channel. Therefore do it like hostapd and send probe responses for broadcast SSID only once by using the noack flag. Signed-off-by: Simon Wunderlich --- net/mac80211/ibss.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index ed7eec3..e22eb95 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); } -- 1.7.10.4