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authorJohannes Berg <johannes.berg@intel.com>2010-08-27 12:35:57 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-08-27 13:53:31 -0400
commit87490f6db38999fee7f6d3dbecc5b94730c7e010 (patch)
treed32a07b51aaa9349f779af63901eec8fa267ac8c /net
parentbf533e0bfd77d9671adabdf134b1ac7f24bb0670 (diff)
mac80211: split out concurrent vif checks
Split the concurrent virtual interface checks into a new function that can be used to check for any given new interface type. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/iface.c43
1 files changed, 29 insertions, 14 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index ea50732ec526..cba3d806d722 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -94,20 +94,14 @@ static inline int identical_mac_addr_allowed(int type1, int type2)
type2 == NL80211_IFTYPE_AP_VLAN));
}
-static int ieee80211_open(struct net_device *dev)
+static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata,
+ enum nl80211_iftype iftype)
{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_sub_if_data *nsdata;
struct ieee80211_local *local = sdata->local;
- struct sta_info *sta;
- u32 changed = 0;
- int res;
- u32 hw_reconf_flags = 0;
+ struct ieee80211_sub_if_data *nsdata;
+ struct net_device *dev = sdata->dev;
- /* fail early if user set an invalid address */
- if (!is_zero_ether_addr(dev->dev_addr) &&
- !is_valid_ether_addr(dev->dev_addr))
- return -EADDRNOTAVAIL;
+ ASSERT_RTNL();
/* we hold the RTNL here so can safely walk the list */
list_for_each_entry(nsdata, &local->interfaces, list) {
@@ -124,7 +118,7 @@ static int ieee80211_open(struct net_device *dev)
* belonging to the same hardware. Then, however, we're
* faced with having to adopt two different TSF timers...
*/
- if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
+ if (iftype == NL80211_IFTYPE_ADHOC &&
nsdata->vif.type == NL80211_IFTYPE_ADHOC)
return -EBUSY;
@@ -138,19 +132,40 @@ static int ieee80211_open(struct net_device *dev)
/*
* check whether it may have the same address
*/
- if (!identical_mac_addr_allowed(sdata->vif.type,
+ if (!identical_mac_addr_allowed(iftype,
nsdata->vif.type))
return -ENOTUNIQ;
/*
* can only add VLANs to enabled APs
*/
- if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
+ if (iftype == NL80211_IFTYPE_AP_VLAN &&
nsdata->vif.type == NL80211_IFTYPE_AP)
sdata->bss = &nsdata->u.ap;
}
}
+ return 0;
+}
+
+static int ieee80211_open(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+ u32 changed = 0;
+ int res;
+ u32 hw_reconf_flags = 0;
+
+ /* fail early if user set an invalid address */
+ if (!is_zero_ether_addr(dev->dev_addr) &&
+ !is_valid_ether_addr(dev->dev_addr))
+ return -EADDRNOTAVAIL;
+
+ res = ieee80211_check_concurrent_iface(sdata, sdata->vif.type);
+ if (res)
+ return res;
+
switch (sdata->vif.type) {
case NL80211_IFTYPE_WDS:
if (!is_valid_ether_addr(sdata->u.wds.remote_addr))