/*
* Delete Key.
*/
void ath9k_cmn_key_delete(struct ath_common *common,
struct ieee80211_key_conf *key)
{
struct ath_hw *ah = common->ah;
ath9k_hw_keyreset(ah, key->hw_key_idx);
if (key->hw_key_idx < IEEE80211_WEP_NKID)
return;
clear_bit(key->hw_key_idx, common->keymap);
if (key->alg != ALG_TKIP)
return;
clear_bit(key->hw_key_idx + 64, common->keymap);
clear_bit(key->hw_key_idx, common->tkip_keymap);
clear_bit(key->hw_key_idx + 64, common->tkip_keymap);
if (common->splitmic) {
ath9k_hw_keyreset(ah, key->hw_key_idx + 32);
clear_bit(key->hw_key_idx + 32, common->keymap);
clear_bit(key->hw_key_idx + 64 + 32, common->keymap);
clear_bit(key->hw_key_idx + 32, common->tkip_keymap);
clear_bit(key->hw_key_idx + 64 + 32, common->tkip_keymap);
}
}
static void ath9k_init_crypto(struct ath_softc *sc)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
int i = 0;
/* Get the hardware key cache size. */
common->keymax = sc->sc_ah->caps.keycache_size;
if (common->keymax > ATH_KEYMAX) {
ath_print(common, ATH_DBG_ANY,
"Warning, using only %u entries in %u key cache\n",
ATH_KEYMAX, common->keymax);
common->keymax = ATH_KEYMAX;
}
/*
* Reset the key cache since some parts do not
* reset the contents on initial power up.
*/
for (i = 0; i < common->keymax; i++)
ath9k_hw_keyreset(sc->sc_ah, (u16) i);
/*
* Check whether the separate key cache entries
* are required to handle both tx+rx MIC keys.
* With split mic keys the number of stations is limited
* to 27 otherwise 59.
*/
if (!(sc->sc_ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA))
common->splitmic = 1;
}
static void ath9k_init_crypto(struct ath_softc *sc)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
int i = 0;
/* Get the hardware key cache size. */
common->keymax = sc->sc_ah->caps.keycache_size;
if (common->keymax > ATH_KEYMAX) {
ath_print(common, ATH_DBG_ANY,
"Warning, using only %u entries in %u key cache\n",
ATH_KEYMAX, common->keymax);
common->keymax = ATH_KEYMAX;
}
/*
* Reset the key cache since some parts do not
* reset the contents on initial power up.
*/
for (i = 0; i < common->keymax; i++)
ath9k_hw_keyreset(sc->sc_ah, (u16) i);
if (ath9k_hw_getcapability(sc->sc_ah, ATH9K_CAP_CIPHER,
ATH9K_CIPHER_TKIP, NULL)) {
/*
* Whether we should enable h/w TKIP MIC.
* XXX: if we don't support WME TKIP MIC, then we wouldn't
* report WMM capable, so it's always safe to turn on
* TKIP MIC in this case.
*/
ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_TKIP_MIC, 0, 1, NULL);
}
/*
* Check whether the separate key cache entries
* are required to handle both tx+rx MIC keys.
* With split mic keys the number of stations is limited
* to 27 otherwise 59.
*/
if (ath9k_hw_getcapability(sc->sc_ah, ATH9K_CAP_CIPHER,
ATH9K_CIPHER_TKIP, NULL)
&& ath9k_hw_getcapability(sc->sc_ah, ATH9K_CAP_CIPHER,
ATH9K_CIPHER_MIC, NULL)
&& ath9k_hw_getcapability(sc->sc_ah, ATH9K_CAP_TKIP_SPLIT,
0, NULL))
common->splitmic = 1;
/* turn on mcast key search if possible */
if (!ath9k_hw_getcapability(sc->sc_ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL))
(void)ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_MCAST_KEYSRCH,
1, 1, NULL);
}
