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Commit 87490f6d authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
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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: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent bf533e0b

net/mac80211/iface.c

+29 −14
Original line number Diff line number Diff line
@@ -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))