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nl80211: Add SOCKET_OWNER support to JOIN_MESH 

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
[johannes: fix race with wdev lock/unlock by just acquiring once]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Denis Kenzior 2018-03-26 12:52:46 -05:00 коммит произвёл Johannes Berg
Родитель f8d16d3edb
Коммит 188c1b3c04
4 изменённых файлов: 11 добавлений и 21 удалений
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2
include/uapi/linux/nl80211.h
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@ -1964,6 +1964,8 @@ enum nl80211_commands {
* station will deauthenticate when the socket is closed.
* If set during %NL80211_CMD_JOIN_IBSS the IBSS will be automatically
* torn down when the socket is closed.
* If set during %NL80211_CMD_JOIN_MESH the mesh setup will be
* automatically torn down when the socket is closed.
*
* @NL80211_ATTR_TDLS_INITIATOR: flag attribute indicating the current end is
* the TDLS link initiator.

4
net/wireless/core.h
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@ -303,10 +303,6 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct mesh_setup *setup,
const struct mesh_config *conf);
int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct mesh_setup *setup,
const struct mesh_config *conf);
int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev);
int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,

16
net/wireless/mesh.c
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@ -217,21 +217,6 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
return err;
}
int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct mesh_setup *setup,
const struct mesh_config *conf)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
wdev_lock(wdev);
err = __cfg80211_join_mesh(rdev, dev, setup, conf);
wdev_unlock(wdev);
return err;
}
int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
struct cfg80211_chan_def *chandef)
@ -286,6 +271,7 @@ int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
err = rdev_leave_mesh(rdev, dev);
if (!err) {
wdev->conn_owner_nlportid = 0;
wdev->mesh_id_len = 0;
wdev->beacon_interval = 0;
memset(&wdev->chandef, 0, sizeof(wdev->chandef));

10
net/wireless/nl80211.c
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@ -10092,7 +10092,7 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
if (err)
return err;
} else {
/* cfg80211_join_mesh() will sort it out */
/* __cfg80211_join_mesh() will sort it out */
setup.chandef.chan = NULL;
}
@ -10130,7 +10130,13 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
setup.userspace_handles_dfs =
nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
wdev_lock(dev->ieee80211_ptr);
err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)