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iwlwifi: fix locking in delayed GTK setting

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This code clearly never could have worked, since it locks
while already locked. Add an unlocked __iwl_mvm_mac_set_key()
variant that doesn't do locking to fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2019-06-27 09:44:50 +02:00
parent abcbef5977
commit 6569e7d367
1 changed files with 26 additions and 13 deletions
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39
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
View File

@ -207,11 +207,11 @@ static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
},
};
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key);
static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key);
void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
{
@ -2738,7 +2738,7 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
mvmvif->ap_early_keys[i] = NULL;
ret = iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
if (ret)
goto out_quota_failed;
}
@ -3506,11 +3506,11 @@ static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
return ret;
}
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
@ -3565,8 +3565,6 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
return -EOPNOTSUPP;
}
mutex_lock(&mvm->mutex);
switch (cmd) {
case SET_KEY:
if ((vif->type == NL80211_IFTYPE_ADHOC ||
@ -3712,7 +3710,22 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
ret = -EINVAL;
}
return ret;
}
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
mutex_lock(&mvm->mutex);
ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
mutex_unlock(&mvm->mutex);
return ret;
}