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mac80211: dont program keys for stations not uploaded

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If a station couldn't be uploaded to the driver but
is still kept (only in IBSS mode) we still shouldn't
try to program the keys for it into hardware; fix
this bug by skipping the key upload in this case.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2012-01-20 13:55:19 +01:00 committed by John W. Linville
parent 077f493928
commit 89c91caecc
1 changed files with 14 additions and 16 deletions
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30
net/mac80211/key.c
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@ -54,14 +54,6 @@ static void assert_key_lock(struct ieee80211_local *local)
lockdep_assert_held(&local->key_mtx);
}
static struct ieee80211_sta *get_sta_for_key(struct ieee80211_key *key)
{
if (key->sta)
return &key->sta->sta;
return NULL;
}
static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
{
/*
@ -95,7 +87,7 @@ static void increment_tailroom_need_count(struct ieee80211_sub_if_data *sdata)
static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sta *sta;
struct sta_info *sta;
int ret;
might_sleep();
@ -105,7 +97,7 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
assert_key_lock(key->local);
sta = get_sta_for_key(key);
sta = key->sta;
/*
* If this is a per-STA GTK, check if it
@ -115,6 +107,9 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
!(key->local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK))
goto out_unsupported;
if (sta && !sta->uploaded)
goto out_unsupported;
sdata = key->sdata;
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
/*
@ -125,7 +120,8 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
goto out_unsupported;
}
ret = drv_set_key(key->local, SET_KEY, sdata, sta, &key->conf);
ret = drv_set_key(key->local, SET_KEY, sdata,
sta ? &sta->sta : NULL, &key->conf);
if (!ret) {
key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE;
@ -144,7 +140,8 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
if (ret != -ENOSPC && ret != -EOPNOTSUPP)
wiphy_err(key->local->hw.wiphy,
"failed to set key (%d, %pM) to hardware (%d)\n",
key->conf.keyidx, sta ? sta->addr : bcast_addr, ret);
key->conf.keyidx,
sta ? sta->sta.addr : bcast_addr, ret);
out_unsupported:
switch (key->conf.cipher) {
@ -163,7 +160,7 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sta *sta;
struct sta_info *sta;
int ret;
might_sleep();
@ -176,7 +173,7 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
return;
sta = get_sta_for_key(key);
sta = key->sta;
sdata = key->sdata;
if (!((key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) ||
@ -185,12 +182,13 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
increment_tailroom_need_count(sdata);
ret = drv_set_key(key->local, DISABLE_KEY, sdata,
sta, &key->conf);
sta ? &sta->sta : NULL, &key->conf);
if (ret)
wiphy_err(key->local->hw.wiphy,
"failed to remove key (%d, %pM) from hardware (%d)\n",
key->conf.keyidx, sta ? sta->addr : bcast_addr, ret);
key->conf.keyidx,
sta ? sta->sta.addr : bcast_addr, ret);
key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;
}