diff options
Diffstat (limited to 'package/mac80211/patches/008-mac80211-fix-todo-lock.patch')
| -rw-r--r-- | package/mac80211/patches/008-mac80211-fix-todo-lock.patch | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/package/mac80211/patches/008-mac80211-fix-todo-lock.patch b/package/mac80211/patches/008-mac80211-fix-todo-lock.patch deleted file mode 100644 index 61ed2b30e9..0000000000 --- a/package/mac80211/patches/008-mac80211-fix-todo-lock.patch +++ /dev/null @@ -1,117 +0,0 @@ -From: Johannes Berg <johannes@sipsolutions.net> -Subject: mac80211: fix todo lock - -The key todo lock can be taken from different locks -that require it to be _bh to avoid lock inversion -due to (soft)irqs. - -This should fix the two problems reported by Bob and -Gabor: -http://mid.gmane.org/20090619113049.GB18956@hash.localnet -http://mid.gmane.org/4A3FA376.8020307@openwrt.org - -Signed-off-by: Johannes Berg <johannes@sipsolutions.net> -Cc: Bob Copeland <me@bobcopeland.com> -Cc: Gabor Juhos <juhosg@openwrt.org> ---- - net/mac80211/key.c | 28 +++++++++++++++------------- - 1 file changed, 15 insertions(+), 13 deletions(-) - ---- a/net/mac80211/key.c -+++ b/net/mac80211/key.c -@@ -70,6 +70,8 @@ static DECLARE_WORK(todo_work, key_todo) - * - * @key: key to add to do item for - * @flag: todo flag(s) -+ * -+ * Must be called with IRQs or softirqs disabled. - */ - static void add_todo(struct ieee80211_key *key, u32 flag) - { -@@ -143,9 +145,9 @@ static void ieee80211_key_enable_hw_acce - ret = drv_set_key(key->local, SET_KEY, &sdata->vif, sta, &key->conf); - - if (!ret) { -- spin_lock(&todo_lock); -+ spin_lock_bh(&todo_lock); - key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE; -- spin_unlock(&todo_lock); -+ spin_unlock_bh(&todo_lock); - } - - if (ret && ret != -ENOSPC && ret != -EOPNOTSUPP) -@@ -167,12 +169,12 @@ static void ieee80211_key_disable_hw_acc - if (!key || !key->local->ops->set_key) - return; - -- spin_lock(&todo_lock); -+ spin_lock_bh(&todo_lock); - if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) { -- spin_unlock(&todo_lock); -+ spin_unlock_bh(&todo_lock); - return; - } -- spin_unlock(&todo_lock); -+ spin_unlock_bh(&todo_lock); - - sta = get_sta_for_key(key); - sdata = key->sdata; -@@ -191,9 +193,9 @@ static void ieee80211_key_disable_hw_acc - wiphy_name(key->local->hw.wiphy), - key->conf.keyidx, sta ? sta->addr : bcast_addr, ret); - -- spin_lock(&todo_lock); -+ spin_lock_bh(&todo_lock); - key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; -- spin_unlock(&todo_lock); -+ spin_unlock_bh(&todo_lock); - } - - static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, -@@ -440,14 +442,14 @@ void ieee80211_key_link(struct ieee80211 - - __ieee80211_key_replace(sdata, sta, old_key, key); - -- spin_unlock_irqrestore(&sdata->local->key_lock, flags); -- - /* free old key later */ - add_todo(old_key, KEY_FLAG_TODO_DELETE); - - add_todo(key, KEY_FLAG_TODO_ADD_DEBUGFS); - if (netif_running(sdata->dev)) - add_todo(key, KEY_FLAG_TODO_HWACCEL_ADD); -+ -+ spin_unlock_irqrestore(&sdata->local->key_lock, flags); - } - - static void __ieee80211_key_free(struct ieee80211_key *key) -@@ -550,7 +552,7 @@ static void __ieee80211_key_todo(void) - */ - synchronize_rcu(); - -- spin_lock(&todo_lock); -+ spin_lock_bh(&todo_lock); - while (!list_empty(&todo_list)) { - key = list_first_entry(&todo_list, struct ieee80211_key, todo); - list_del_init(&key->todo); -@@ -561,7 +563,7 @@ static void __ieee80211_key_todo(void) - KEY_FLAG_TODO_HWACCEL_REMOVE | - KEY_FLAG_TODO_DELETE); - key->flags &= ~todoflags; -- spin_unlock(&todo_lock); -+ spin_unlock_bh(&todo_lock); - - work_done = false; - -@@ -594,9 +596,9 @@ static void __ieee80211_key_todo(void) - - WARN_ON(!work_done); - -- spin_lock(&todo_lock); -+ spin_lock_bh(&todo_lock); - } -- spin_unlock(&todo_lock); -+ spin_unlock_bh(&todo_lock); - } - - void ieee80211_key_todo(void) |