devlist_mtx locking is changed to accomodate changes.
Signed-off-by: Michal Kazior <michal.kazior@xxxxxxxxx>
---
net/wireless/core.c | 2 ++
net/wireless/ibss.c | 10 ++++++++++
net/wireless/mesh.c | 7 +++++++
net/wireless/mlme.c | 8 ++++++++
net/wireless/nl80211.c | 8 ++++++++
net/wireless/util.c | 5 +++--
6 files changed, 38 insertions(+), 2 deletions(-)
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 5b3f74e..3098f1e 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -1041,7 +1041,9 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
return notifier_from_errno(-EOPNOTSUPP);
if (rfkill_blocked(rdev->rfkill))
return notifier_from_errno(-ERFKILL);
+ mutex_lock(&rdev->devlist_mtx);
ret = cfg80211_can_add_interface(rdev, wdev->iftype);
+ mutex_unlock(&rdev->devlist_mtx);
if (ret)
return notifier_from_errno(ret);
cfg80211_lock_rdev(rdev);
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index b90fd86..ca5672f 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -118,6 +118,16 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
wdev->wext.ibss.channel = params->channel;
#endif
wdev->sme_state = CFG80211_SME_CONNECTING;
+
+ err = cfg80211_can_use_chan(rdev, wdev, params->channel,
+ params->channel_fixed
+ ? CHAN_MODE_SHARED
+ : CHAN_MODE_EXCLUSIVE);
+ if (err) {
+ wdev->connect_keys = NULL;
+ return err;
+ }
+
err = rdev->ops->join_ibss(&rdev->wiphy, dev, params);
if (err) {
wdev->connect_keys = NULL;
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index c9c38e3..a1e648a 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -149,6 +149,11 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
setup->channel_type))
return -EINVAL;
+ err = cfg80211_can_use_chan(rdev, wdev, setup->channel,
+ CHAN_MODE_SHARED);
+ if (err)
+ return err;
+
err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, setup);
if (!err) {
memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len);
@@ -167,9 +172,11 @@ int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
+ mutex_lock(&rdev->devlist_mtx);
wdev_lock(wdev);
err = __cfg80211_join_mesh(rdev, dev, setup, conf);
wdev_unlock(wdev);
+ mutex_unlock(&rdev->devlist_mtx);
return err;
}
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index da4406f..3692aa9 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -302,8 +302,14 @@ int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
if (!req.bss)
return -ENOENT;
+ err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel,
+ CHAN_MODE_SHARED);
+ if (err)
+ goto end;
+
err = rdev->ops->auth(&rdev->wiphy, dev, &req);
+end:
cfg80211_put_bss(req.bss);
return err;
}
@@ -317,11 +323,13 @@ int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
{
int err;
+ mutex_lock(&rdev->devlist_mtx);
wdev_lock(dev->ieee80211_ptr);
err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
ssid, ssid_len, ie, ie_len,
key, key_len, key_idx);
wdev_unlock(dev->ieee80211_ptr);
+ mutex_unlock(&rdev->devlist_mtx);
return err;
}
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 819ebc0..85ddb3e 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2349,6 +2349,14 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
params.channel_type))
return -EINVAL;
+ mutex_lock(&rdev->devlist_mtx);
+ err = cfg80211_can_use_chan(rdev, wdev, params.channel,
+ CHAN_MODE_SHARED);
+ mutex_unlock(&rdev->devlist_mtx);
+
+ if (err)
+ return err;
+
err = rdev->ops->start_ap(&rdev->wiphy, dev, ¶ms);
if (!err) {
wdev->beacon_interval = params.beacon_interval;
diff --git a/net/wireless/util.c b/net/wireless/util.c
index d40f324..51bda53 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -805,8 +805,10 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
return -EBUSY;
if (ntype != otype && netif_running(dev)) {
+ mutex_lock(&rdev->devlist_mtx);
err = cfg80211_can_change_interface(rdev, dev->ieee80211_ptr,
ntype);
+ mutex_unlock(&rdev->devlist_mtx);
if (err)
return err;
@@ -956,6 +958,7 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
int i, j;
ASSERT_RTNL();
+ lockdep_assert_held(&rdev->devlist_mtx);
/* Always allow software iftypes */
if (rdev->wiphy.software_iftypes & BIT(iftype))
@@ -992,7 +995,6 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
num[iftype] = 1;
- mutex_lock(&rdev->devlist_mtx);
list_for_each_entry(wdev_iter, &rdev->netdev_list, list) {
if (wdev_iter == wdev)
continue;
@@ -1031,7 +1033,6 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
total++;
used_iftypes |= BIT(wdev_iter->iftype);
}
- mutex_unlock(&rdev->devlist_mtx);
kfree(used_channels);
if (total == 1)
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
