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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: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2010-08-27 12:35:57 +02:00 committed by John W. Linville
parent bf533e0bfd
commit 87490f6db3
1 changed files with 29 additions and 14 deletions
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43
net/mac80211/iface.c
View File

@ -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))