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path: root/net/wireless/wext-sme.c
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Diffstat (limited to 'net/wireless/wext-sme.c')
-rw-r--r--net/wireless/wext-sme.c125
1 files changed, 88 insertions, 37 deletions
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index fe1987acb891..6f75aaa7f795 100644
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -15,6 +15,9 @@ static int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
{
int err;
+ ASSERT_RDEV_LOCK(rdev);
+ ASSERT_WDEV_LOCK(wdev);
+
if (!netif_running(wdev->netdev))
return 0;
@@ -24,8 +27,8 @@ static int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
err = 0;
if (wdev->wext.connect.ssid_len != 0)
- err = cfg80211_connect(rdev, wdev->netdev,
- &wdev->wext.connect);
+ err = __cfg80211_connect(rdev, wdev->netdev,
+ &wdev->wext.connect);
return err;
}
@@ -50,33 +53,43 @@ int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
if (chan && (chan->flags & IEEE80211_CHAN_DISABLED))
return -EINVAL;
- if (wdev->wext.connect.channel == chan)
- return 0;
+ cfg80211_lock_rdev(rdev);
+ wdev_lock(wdev);
+
+ if (wdev->wext.connect.channel == chan) {
+ err = 0;
+ goto out;
+ }
if (wdev->sme_state != CFG80211_SME_IDLE) {
bool event = true;
/* if SSID set, we'll try right again, avoid event */
if (wdev->wext.connect.ssid_len)
event = false;
- err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
- dev, WLAN_REASON_DEAUTH_LEAVING,
- event);
+ err = __cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
+ dev, WLAN_REASON_DEAUTH_LEAVING,
+ event);
if (err)
- return err;
+ goto out;
}
+
wdev->wext.connect.channel = chan;
/* SSID is not set, we just want to switch channel */
if (wdev->wext.connect.ssid_len && chan) {
- if (!rdev->ops->set_channel)
- return -EOPNOTSUPP;
-
- return rdev->ops->set_channel(wdev->wiphy, chan,
- NL80211_CHAN_NO_HT);
+ err = -EOPNOTSUPP;
+ if (rdev->ops->set_channel)
+ err = rdev->ops->set_channel(wdev->wiphy, chan,
+ NL80211_CHAN_NO_HT);
+ goto out;
}
- return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
+ err = cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
+ out:
+ wdev_unlock(wdev);
+ cfg80211_unlock_rdev(rdev);
+ return err;
}
/* temporary symbol - mark GPL - in the future the handler won't be */
EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwfreq);
@@ -92,10 +105,12 @@ int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
return -EINVAL;
+ wdev_lock(wdev);
if (wdev->current_bss)
chan = wdev->current_bss->pub.channel;
else if (wdev->wext.connect.channel)
chan = wdev->wext.connect.channel;
+ wdev_unlock(wdev);
if (chan) {
freq->m = chan->center_freq;
@@ -128,21 +143,26 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev,
if (len > 0 && ssid[len - 1] == '\0')
len--;
+ cfg80211_lock_rdev(wiphy_to_dev(wdev->wiphy));
+ wdev_lock(wdev);
+
+ err = 0;
+
if (wdev->wext.connect.ssid && len &&
len == wdev->wext.connect.ssid_len &&
memcmp(wdev->wext.connect.ssid, ssid, len))
- return 0;
+ goto out;
if (wdev->sme_state != CFG80211_SME_IDLE) {
bool event = true;
/* if SSID set now, we'll try to connect, avoid event */
if (len)
event = false;
- err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
- dev, WLAN_REASON_DEAUTH_LEAVING,
- event);
+ err = __cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
+ dev, WLAN_REASON_DEAUTH_LEAVING,
+ event);
if (err)
- return err;
+ goto out;
}
wdev->wext.connect.ssid = wdev->wext.ssid;
@@ -151,7 +171,11 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev,
wdev->wext.connect.crypto.control_port = false;
- return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
+ err = cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
+ out:
+ wdev_unlock(wdev);
+ cfg80211_unlock_rdev(wiphy_to_dev(wdev->wiphy));
+ return err;
}
/* temporary symbol - mark GPL - in the future the handler won't be */
EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwessid);
@@ -168,6 +192,7 @@ int cfg80211_mgd_wext_giwessid(struct net_device *dev,
data->flags = 0;
+ wdev_lock(wdev);
if (wdev->ssid_len) {
data->flags = 1;
data->length = wdev->ssid_len;
@@ -178,6 +203,7 @@ int cfg80211_mgd_wext_giwessid(struct net_device *dev,
memcpy(ssid, wdev->wext.connect.ssid, data->length);
} else
data->flags = 0;
+ wdev_unlock(wdev);
return 0;
}
@@ -203,21 +229,25 @@ int cfg80211_mgd_wext_siwap(struct net_device *dev,
if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
bssid = NULL;
+ cfg80211_lock_rdev(wiphy_to_dev(wdev->wiphy));
+ wdev_lock(wdev);
+
+ err = 0;
/* both automatic */
if (!bssid && !wdev->wext.connect.bssid)
- return 0;
+ goto out;
/* fixed already - and no change */
if (wdev->wext.connect.bssid && bssid &&
compare_ether_addr(bssid, wdev->wext.connect.bssid) == 0)
- return 0;
+ goto out;
if (wdev->sme_state != CFG80211_SME_IDLE) {
- err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
- dev, WLAN_REASON_DEAUTH_LEAVING,
- false);
+ err = __cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
+ dev, WLAN_REASON_DEAUTH_LEAVING,
+ false);
if (err)
- return err;
+ goto out;
}
if (bssid) {
@@ -226,7 +256,11 @@ int cfg80211_mgd_wext_siwap(struct net_device *dev,
} else
wdev->wext.connect.bssid = NULL;
- return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
+ err = cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
+ out:
+ wdev_unlock(wdev);
+ cfg80211_unlock_rdev(wiphy_to_dev(wdev->wiphy));
+ return err;
}
/* temporary symbol - mark GPL - in the future the handler won't be */
EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwap);
@@ -243,12 +277,14 @@ int cfg80211_mgd_wext_giwap(struct net_device *dev,
ap_addr->sa_family = ARPHRD_ETHER;
+ wdev_lock(wdev);
if (wdev->current_bss)
memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
else if (wdev->wext.connect.bssid)
memcpy(ap_addr->sa_data, wdev->wext.connect.bssid, ETH_ALEN);
else
memset(ap_addr->sa_data, 0, ETH_ALEN);
+ wdev_unlock(wdev);
return 0;
}
@@ -270,15 +306,20 @@ int cfg80211_wext_siwgenie(struct net_device *dev,
if (!ie_len)
ie = NULL;
+ wdev_lock(wdev);
+
/* no change */
+ err = 0;
if (wdev->wext.ie_len == ie_len &&
memcmp(wdev->wext.ie, ie, ie_len) == 0)
- return 0;
+ goto out;
if (ie_len) {
ie = kmemdup(extra, ie_len, GFP_KERNEL);
- if (!ie)
- return -ENOMEM;
+ if (!ie) {
+ err = -ENOMEM;
+ goto out;
+ }
} else
ie = NULL;
@@ -287,14 +328,17 @@ int cfg80211_wext_siwgenie(struct net_device *dev,
wdev->wext.ie_len = ie_len;
if (wdev->sme_state != CFG80211_SME_IDLE) {
- err = cfg80211_disconnect(rdev, dev,
- WLAN_REASON_DEAUTH_LEAVING, false);
+ err = __cfg80211_disconnect(rdev, dev,
+ WLAN_REASON_DEAUTH_LEAVING, false);
if (err)
- return err;
+ goto out;
}
/* userspace better not think we'll reconnect */
- return 0;
+ err = 0;
+ out:
+ wdev_unlock(wdev);
+ return err;
}
EXPORT_SYMBOL_GPL(cfg80211_wext_siwgenie);
@@ -305,6 +349,7 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct iw_mlme *mlme = (struct iw_mlme *)extra;
struct cfg80211_registered_device *rdev;
+ int err;
if (!wdev)
return -EOPNOTSUPP;
@@ -317,13 +362,19 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
if (mlme->addr.sa_family != ARPHRD_ETHER)
return -EINVAL;
+ wdev_lock(wdev);
switch (mlme->cmd) {
case IW_MLME_DEAUTH:
case IW_MLME_DISASSOC:
- return cfg80211_disconnect(rdev, dev, mlme->reason_code,
- true);
+ err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
+ true);
+ break;
default:
- return -EOPNOTSUPP;
+ err = -EOPNOTSUPP;
+ break;
}
+ wdev_unlock(wdev);
+
+ return err;
}
EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);
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