redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

mac80211: mesh: avoid pointless station lookup 

In ieee80211_build_hdr(), the station is looked up to build the
header correctly (QoS field) and to check for authorization. For
mesh, authorization isn't checked here, and QoS capability is
mandatory, so the station lookup can be avoided.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
hifive-unleashed-5.1
Johannes Berg 2015-03-20 16:01:52 +01:00
parent a8d15ff005
commit e33f5569aa
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
net/mac80211/tx.c
View File

@ -2052,12 +2052,14 @@ static struct sk_buff *ieee80211_build_hdr(struct ieee80211_sub_if_data *sdata,
}
/*
* There's no need to try to look up the destination
* if it is a multicast address (which can only happen
* in AP mode)
* There's no need to try to look up the destination station
* if it is a multicast address. In mesh, there's no need to
* look up the station at all as it always must be QoS capable
* and mesh mode checks authorization later.
*/
multicast = is_multicast_ether_addr(hdr.addr1);
if (!multicast && !have_station) {
if (!multicast && !have_station &&
!ieee80211_vif_is_mesh(&sdata->vif)) {
sta = sta_info_get(sdata, hdr.addr1);
if (sta) {
authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);