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iwlwifi: make WEP key restoring explicit

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The firmware clears default WEP keys on
transitions to !associated, so we need
to restore them just like stations. This
is rather implicit as part of sending a
station right now, which is odd. Make it
explicit instead and only for agn since
3945 doesn't use hw crypto for WEP.

Due to that, iwl_send_static_wepkey_cmd
is now only used in iwl-sta.c and can be
static.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
This commit is contained in:
Johannes Berg 2010-03-30 10:11:46 -07:00 committed by Reinette Chatre
parent 678b385d07
commit 335348b170
4 changed files with 20 additions and 22 deletions
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25
drivers/net/wireless/iwlwifi/iwl-agn.c
View file

@ -158,6 +158,11 @@ int iwl_commit_rxon(struct iwl_priv *priv)
}
iwl_clear_ucode_stations(priv, false);
iwl_restore_stations(priv);
ret = iwl_restore_default_wep_keys(priv);
if (ret) {
IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
return ret;
}
}
IWL_DEBUG_INFO(priv, "Sending RXON\n"
@ -185,6 +190,11 @@ int iwl_commit_rxon(struct iwl_priv *priv)
memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
iwl_clear_ucode_stations(priv, false);
iwl_restore_stations(priv);
ret = iwl_restore_default_wep_keys(priv);
if (ret) {
IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
return ret;
}
}
priv->start_calib = 0;
@ -3030,19 +3040,6 @@ static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
}
}
/**
* iwl_restore_wepkeys - Restore WEP keys to device
*/
static void iwl_restore_wepkeys(struct iwl_priv *priv)
{
mutex_lock(&priv->mutex);
if (priv->iw_mode == NL80211_IFTYPE_STATION &&
priv->default_wep_key &&
iwl_send_static_wepkey_cmd(priv, 0))
IWL_ERR(priv, "Could not send WEP static key\n");
mutex_unlock(&priv->mutex);
}
static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
@ -3069,8 +3066,6 @@ static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
return ret;
}
iwl_restore_wepkeys(priv);
/* Initialize rate scaling */
IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
sta->addr);

1
drivers/net/wireless/iwlwifi/iwl-dev.h
View file

@ -1167,7 +1167,6 @@ struct iwl_priv {
int num_stations;
struct iwl_station_entry stations[IWL_STATION_COUNT];
struct iwl_wep_key wep_keys[WEP_KEYS_MAX]; /* protected by mutex */
u8 default_wep_key;
u8 key_mapping_key;
unsigned long ucode_key_table;

14
drivers/net/wireless/iwlwifi/iwl-sta.c
View file

@ -759,7 +759,7 @@ int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
}
EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
{
int i, not_empty = 0;
u8 buff[sizeof(struct iwl_wep_cmd) +
@ -803,7 +803,14 @@ int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
else
return 0;
}
EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
int iwl_restore_default_wep_keys(struct iwl_priv *priv)
{
WARN_ON(!mutex_is_locked(&priv->mutex));
return iwl_send_static_wepkey_cmd(priv, 0);
}
EXPORT_SYMBOL(iwl_restore_default_wep_keys);
int iwl_remove_default_wep_key(struct iwl_priv *priv,
struct ieee80211_key_conf *keyconf)
@ -819,7 +826,6 @@ int iwl_remove_default_wep_key(struct iwl_priv *priv,
IWL_ERR(priv, "index %d not used in uCode key table.\n",
keyconf->keyidx);
priv->default_wep_key--;
memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
if (iwl_is_rfkill(priv)) {
IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
@ -851,8 +857,6 @@ int iwl_set_default_wep_key(struct iwl_priv *priv,
keyconf->hw_key_idx = HW_KEY_DEFAULT;
priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
priv->default_wep_key++;
if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
IWL_ERR(priv, "index %d already used in uCode key table.\n",
keyconf->keyidx);

2
drivers/net/wireless/iwlwifi/iwl-sta.h
View file

@ -44,11 +44,11 @@
*/
u8 iwl_find_station(struct iwl_priv *priv, const u8 *bssid);
int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty);
int iwl_remove_default_wep_key(struct iwl_priv *priv,
struct ieee80211_key_conf *key);
int iwl_set_default_wep_key(struct iwl_priv *priv,
struct ieee80211_key_conf *key);
int iwl_restore_default_wep_keys(struct iwl_priv *priv);
int iwl_set_dynamic_key(struct iwl_priv *priv,
struct ieee80211_key_conf *key, u8 sta_id);
int iwl_remove_dynamic_key(struct iwl_priv *priv,