ath9k: assign a keycache slot per station for unencrypted links to fix powersave...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26712 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/mac80211/patches/571-ath9k_assign_unencrypted_ps_keyidx.patch b/package/mac80211/patches/571-ath9k_assign_unencrypted_ps_keyidx.patch
new file mode 100644 (file)
index 0000000..7996f33
--- /dev/null
+++ b/package/mac80211/patches/571-ath9k_assign_unencrypted_ps_keyidx.patch
@@ -0,0 +1,119 @@
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -256,6 +256,8 @@ struct ath_node {
+ #endif
+       struct ath_atx_tid tid[WME_NUM_TID];
+       struct ath_atx_ac ac[WME_NUM_AC];
++      int ps_key;
++
+       u16 maxampdu;
+       u8 mpdudensity;
+ 
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -1775,18 +1775,37 @@ static int ath9k_sta_add(struct ieee8021
+                        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;
+@@ -1889,6 +1908,9 @@ static int ath9k_set_key(struct ieee8021
+ 
+       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;
+--- a/drivers/net/wireless/ath/key.c
++++ b/drivers/net/wireless/ath/key.c
+@@ -483,6 +483,9 @@ int ath_key_config(struct ath_common *co
+       memset(&hk, 0, sizeof(hk));
+ 
+       switch (key->cipher) {
++      case 0:
++              hk.kv_type = ATH_CIPHER_CLR;
++              break;
+       case WLAN_CIPHER_SUITE_WEP40:
+       case WLAN_CIPHER_SUITE_WEP104:
+               hk.kv_type = ATH_CIPHER_WEP;
+@@ -498,7 +501,8 @@ int ath_key_config(struct ath_common *co
+       }
+ 
+       hk.kv_len = key->keylen;
+-      memcpy(hk.kv_val, key->key, key->keylen);
++      if (key->keylen)
++              memcpy(hk.kv_val, key->key, key->keylen);
+ 
+       if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
+               switch (vif->type) {
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1526,7 +1526,7 @@ static void setup_frame_info(struct ieee
+       struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
+       struct ieee80211_hdr *hdr;
+       struct ath_frame_info *fi = get_frame_info(skb);
+-      struct ath_node *an;
++      struct ath_node *an = NULL;
+       struct ath_atx_tid *tid;
+       enum ath9k_key_type keytype;
+       u16 seqno = 0;
+@@ -1534,11 +1534,13 @@ static void setup_frame_info(struct ieee
+ 
+       keytype = ath9k_cmn_get_hw_crypto_keytype(skb);
+ 
++      if (sta)
++              an = (struct ath_node *) sta->drv_priv;
++
+       hdr = (struct ieee80211_hdr *)skb->data;
+-      if (sta && ieee80211_is_data_qos(hdr->frame_control) &&
++      if (an && ieee80211_is_data_qos(hdr->frame_control) &&
+               conf_is_ht(&hw->conf) && (sc->sc_flags & SC_OP_TXAGGR)) {
+ 
+-              an = (struct ath_node *) sta->drv_priv;
+               tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
+ 
+               /*
+@@ -1554,6 +1556,8 @@ static void setup_frame_info(struct ieee
+       memset(fi, 0, sizeof(*fi));
+       if (hw_key)
+               fi->keyix = hw_key->hw_key_idx;
++      else if (an && ieee80211_is_data(hdr->frame_control) && an->ps_key > 0)
++              fi->keyix = an->ps_key;
+       else
+               fi->keyix = ATH9K_TXKEYIX_INVALID;
+       fi->keytype = keytype;