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| author | Johannes Berg <johannes.berg@intel.com> | 2010-06-01 10:19:19 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-06-03 14:10:46 -0400 |
| commit | ad0e2b5a00dbec303e4682b403bb6703d11dcdb2 (patch) | |
| tree | b7aeb06a284af0cfb4aa1de840592478b373f554 /net/mac80211/cfg.c | |
| parent | efe4c457a1d4e56840c42bf2e409dc04e8ad4304 (diff) | |
| download | kernel_samsung_smdk4412-ad0e2b5a00dbec303e4682b403bb6703d11dcdb2.zip kernel_samsung_smdk4412-ad0e2b5a00dbec303e4682b403bb6703d11dcdb2.tar.gz kernel_samsung_smdk4412-ad0e2b5a00dbec303e4682b403bb6703d11dcdb2.tar.bz2 | |
mac80211: simplify key locking
Since I recently made station management able
to sleep, I can now rework key management as
well; since it will no longer need a spinlock
and can also use a mutex instead, a bunch of
code to allow drivers' set_key to sleep while
key management is protected by a spinlock can
now be removed.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/cfg.c')
| -rw-r--r-- | net/mac80211/cfg.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index f8c49c5..952845e 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -120,6 +120,9 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_key *key; int err; + if (!netif_running(dev)) + return -ENETDOWN; + sdata = IEEE80211_DEV_TO_SUB_IF(dev); switch (params->cipher) { @@ -145,7 +148,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, if (!key) return -ENOMEM; - rcu_read_lock(); + mutex_lock(&sdata->local->sta_mtx); if (mac_addr) { sta = sta_info_get_bss(sdata, mac_addr); @@ -160,7 +163,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, err = 0; out_unlock: - rcu_read_unlock(); + mutex_unlock(&sdata->local->sta_mtx); return err; } @@ -174,7 +177,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, sdata = IEEE80211_DEV_TO_SUB_IF(dev); - rcu_read_lock(); + mutex_lock(&sdata->local->sta_mtx); if (mac_addr) { ret = -ENOENT; @@ -202,7 +205,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, ret = 0; out_unlock: - rcu_read_unlock(); + mutex_unlock(&sdata->local->sta_mtx); return ret; } @@ -305,15 +308,10 @@ static int ieee80211_config_default_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx) { - struct ieee80211_sub_if_data *sdata; - - rcu_read_lock(); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_set_default_key(sdata, key_idx); - rcu_read_unlock(); - return 0; } |