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cfg80211: respect iface combinations when starting operation

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devlist_mtx locking is changed to accomodate changes.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Michal Kazior 2012-06-29 12:47:08 +02:00 committed by Johannes Berg
parent d4e50c5917
commit e4e32459c2
6 changed files with 52 additions and 5 deletions
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2
net/wireless/core.c
View File

@ -990,7 +990,9 @@ 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);

10
net/wireless/ibss.c
View File

@ -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;

12
net/wireless/mesh.c
View File

@ -155,6 +155,11 @@ 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);
@ -173,9 +178,11 @@ 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;
}
@ -208,6 +215,11 @@ int cfg80211_set_mesh_freq(struct cfg80211_registered_device *rdev,
if (!netif_running(wdev->netdev))
return -ENETDOWN;
err = cfg80211_can_use_chan(rdev, wdev, channel,
CHAN_MODE_SHARED);
if (err)
return err;
err = rdev->ops->libertas_set_mesh_channel(&rdev->wiphy,
wdev->netdev,
channel);

16
net/wireless/mlme.c
View File

@ -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 out;
err = rdev->ops->auth(&rdev->wiphy, dev, &req);
out:
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;
}
@ -397,8 +405,14 @@ int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
return -ENOENT;
}
err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel,
CHAN_MODE_SHARED);
if (err)
goto out;
err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
out:
if (err) {
if (was_connected)
wdev->sme_state = CFG80211_SME_CONNECTED;
@ -421,11 +435,13 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
mutex_lock(&rdev->devlist_mtx);
wdev_lock(wdev);
err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
ssid, ssid_len, ie, ie_len, use_mfp, crypt,
assoc_flags, ht_capa, ht_capa_mask);
wdev_unlock(wdev);
mutex_unlock(&rdev->devlist_mtx);
return err;
}

8
net/wireless/nl80211.c
View File

@ -2478,6 +2478,14 @@ 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, &params);
if (!err) {
wdev->preset_chan = params.channel;

9
net/wireless/util.c
View File

@ -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))
@ -979,7 +982,6 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
break;
}
mutex_lock(&rdev->devlist_mtx);
list_for_each_entry(wdev_iter, &rdev->netdev_list, list) {
if (wdev_iter == wdev)
continue;
@ -999,10 +1001,8 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
if (!used_channels[i] || used_channels[i] == ch)
break;
if (i == CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
mutex_unlock(&rdev->devlist_mtx);
if (i == CFG80211_MAX_NUM_DIFFERENT_CHANNELS)
return -EBUSY;
}
if (used_channels[i] == NULL) {
used_channels[i] = ch;
@ -1018,7 +1018,6 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
total++;
used_iftypes |= BIT(wdev_iter->iftype);
}
mutex_unlock(&rdev->devlist_mtx);
if (total == 1)
return 0;