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authorDenis Kenzior <denkenz@gmail.com>2018-03-26 12:52:45 -0500
committerJohannes Berg <johannes.berg@intel.com>2018-03-29 10:36:22 +0200
commitf8d16d3edb4dbae080df04318423c360de3c594d (patch)
treeb110456d132b2538a6533e3b249a8e5fa1b157b3 /net/wireless
parent37b1c004685a3cea420dd96aa3803da627359f60 (diff)
downloadop-kernel-dev-f8d16d3edb4dbae080df04318423c360de3c594d.zip
op-kernel-dev-f8d16d3edb4dbae080df04318423c360de3c594d.tar.gz
nl80211: Add SOCKET_OWNER support to JOIN_IBSS
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>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/core.h8
-rw-r--r--net/wireless/ibss.c27
-rw-r--r--net/wireless/nl80211.c7
3 files changed, 16 insertions, 26 deletions
diff --git a/net/wireless/core.h b/net/wireless/core.h
index eaff636..b5cf3ea 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -282,10 +282,10 @@ void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
unsigned long age_secs);
/* IBSS */
-int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
- struct net_device *dev,
- struct cfg80211_ibss_params *params,
- struct cfg80211_cached_keys *connkeys);
+int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
+ struct net_device *dev,
+ struct cfg80211_ibss_params *params,
+ struct cfg80211_cached_keys *connkeys);
void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
struct net_device *dev, bool nowext);
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index a1d1099..d1743e6 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -84,14 +84,15 @@ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
}
EXPORT_SYMBOL(cfg80211_ibss_joined);
-static int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
- struct net_device *dev,
- struct cfg80211_ibss_params *params,
- struct cfg80211_cached_keys *connkeys)
+int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
+ struct net_device *dev,
+ struct cfg80211_ibss_params *params,
+ struct cfg80211_cached_keys *connkeys)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
+ ASSERT_RTNL();
ASSERT_WDEV_LOCK(wdev);
if (wdev->ssid_len)
@@ -146,23 +147,6 @@ static int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
return 0;
}
-int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
- struct net_device *dev,
- struct cfg80211_ibss_params *params,
- struct cfg80211_cached_keys *connkeys)
-{
- struct wireless_dev *wdev = dev->ieee80211_ptr;
- int err;
-
- ASSERT_RTNL();
-
- wdev_lock(wdev);
- err = __cfg80211_join_ibss(rdev, dev, params, connkeys);
- wdev_unlock(wdev);
-
- return err;
-}
-
static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
@@ -224,6 +208,7 @@ int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
if (err)
return err;
+ wdev->conn_owner_nlportid = 0;
__cfg80211_clear_ibss(dev, nowext);
return 0;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index fe27ab4..13f7c00 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8679,9 +8679,14 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
ibss.userspace_handles_dfs =
nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
- err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
+ wdev_lock(dev->ieee80211_ptr);
+ err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kzfree(connkeys);
+ else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
+ dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
+ wdev_unlock(dev->ieee80211_ptr);
+
return err;
}
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