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ath9k: assign keycache slots to unencrypted stations

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Frame filtering relies on having a valid destination index (keycache slot),
to keep track of the destination. Assigning a keycache slot (configured
to unencrypted, with no key data attached) improves powersave handling in
AP mode with no encryption.
The dummy keycache entry for a station is cleared, when a real key gets
added.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau
2011-04-17 23:28:10 +02:00
committed by John W. Linville
parent 5519541d5a
commit 93ae2dd223
4 changed files with 36 additions and 4 deletions
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22
drivers/net/wireless/ath/ath9k/main.c
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@@ -1732,18 +1732,37 @@ static int ath9k_sta_add(struct ieee80211_hw *hw,
struct ieee80211_sta *sta)
{
struct ath_softc *sc = hw->priv;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_node *an = (struct ath_node *) sta->drv_priv;
struct ieee80211_key_conf ps_key = { };
ath_node_attach(sc, sta);
an->ps_key = ath_key_config(common, vif, sta, &ps_key);
return 0;
}
static void ath9k_del_ps_key(struct ath_softc *sc,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_node *an = (struct ath_node *) sta->drv_priv;
struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key };
if (!an->ps_key)
return;
ath_key_delete(common, &ps_key);
}
static int ath9k_sta_remove(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath_softc *sc = hw->priv;
ath9k_del_ps_key(sc, vif, sta);
ath_node_detach(sc, sta);
return 0;
@@ -1844,6 +1863,9 @@ static int ath9k_set_key(struct ieee80211_hw *hw,
switch (cmd) {
case SET_KEY:
if (sta)
ath9k_del_ps_key(sc, vif, sta);
ret = ath_key_config(common, vif, sta, key);
if (ret >= 0) {
key->hw_key_idx = ret;