2015-03-20 16:24:14 +00:00
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From: Johannes Berg <johannes.berg@intel.com>
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Date: Fri, 20 Mar 2015 16:24:23 +0100
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Subject: [PATCH] mac80211: mesh: avoid pointless station lookup
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In ieee80211_build_hdr(), the station is looked up to build the
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header correctly (QoS field) and to check for authorization. For
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mesh, authorization isn't checked here, and QoS capability is
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mandatory, so the station lookup can be avoided.
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Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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---
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--- a/net/mac80211/tx.c
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+++ b/net/mac80211/tx.c
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2015-04-03 19:42:33 +00:00
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@@ -2130,12 +2130,14 @@ static struct sk_buff *ieee80211_build_h
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2015-03-20 16:24:14 +00:00
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}
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/*
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- * There's no need to try to look up the destination
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- * if it is a multicast address (which can only happen
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- * in AP mode)
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+ * There's no need to try to look up the destination station
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+ * if it is a multicast address. In mesh, there's no need to
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+ * look up the station at all as it always must be QoS capable
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+ * and mesh mode checks authorization later.
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*/
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multicast = is_multicast_ether_addr(hdr.addr1);
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- if (!multicast && !have_station) {
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+ if (!multicast && !have_station &&
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+ !ieee80211_vif_is_mesh(&sdata->vif)) {
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sta = sta_info_get(sdata, hdr.addr1);
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if (sta) {
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authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
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