This implements the cfg80211 change_interface hook that changes the
type of an interface and cleans up the code a bit.
Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
---
net/mac80211/cfg.c | 75 ++++++++++++++++++++++++++++++++++++++++-------------
1 file changed, 57 insertions(+), 18 deletions(-)
--- wireless-dev.orig/net/mac80211/cfg.c 2007-09-28 21:35:57.390086556 +0200
+++ wireless-dev/net/mac80211/cfg.c 2007-09-28 21:46:21.130086556 +0200
@@ -12,31 +12,35 @@
#include "ieee80211_i.h"
#include "cfg.h"
+static enum ieee80211_if_types
+nl80211_type_to_mac80211_type(enum nl80211_iftype type)
+{
+ switch (type) {
+ case NL80211_IFTYPE_UNSPECIFIED:
+ return IEEE80211_IF_TYPE_STA;
+ case NL80211_IFTYPE_ADHOC:
+ return IEEE80211_IF_TYPE_IBSS;
+ case NL80211_IFTYPE_STATION:
+ return IEEE80211_IF_TYPE_STA;
+ case NL80211_IFTYPE_MONITOR:
+ return IEEE80211_IF_TYPE_MNTR;
+ default:
+ return IEEE80211_IF_TYPE_INVALID;
+ }
+}
+
static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
enum nl80211_iftype type)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
- int itype;
+ enum ieee80211_if_types itype;
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
- switch (type) {
- case NL80211_IFTYPE_UNSPECIFIED:
- itype = IEEE80211_IF_TYPE_STA;
- break;
- case NL80211_IFTYPE_ADHOC:
- itype = IEEE80211_IF_TYPE_IBSS;
- break;
- case NL80211_IFTYPE_STATION:
- itype = IEEE80211_IF_TYPE_STA;
- break;
- case NL80211_IFTYPE_MONITOR:
- itype = IEEE80211_IF_TYPE_MNTR;
- break;
- default:
+ itype = nl80211_type_to_mac80211_type(type);
+ if (itype == IEEE80211_IF_TYPE_INVALID)
return -EINVAL;
- }
return ieee80211_if_add(local->mdev, name, NULL, itype);
}
@@ -50,17 +54,52 @@ static int ieee80211_del_iface(struct wi
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
- dev = dev_get_by_index(ifindex);
+ /* we're under RTNL */
+ dev = __dev_get_by_index(ifindex);
if (!dev)
return 0;
name = dev->name;
- dev_put(dev);
return ieee80211_if_remove(local->mdev, name, -1);
}
+static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
+ enum nl80211_iftype type)
+{
+ struct ieee80211_local *local = wiphy_priv(wiphy);
+ struct net_device *dev;
+ enum ieee80211_if_types itype;
+ struct ieee80211_sub_if_data *sdata;
+
+ if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
+ return -ENODEV;
+
+ /* we're under RTNL */
+ dev = __dev_get_by_index(ifindex);
+ if (!dev)
+ return -ENODEV;
+
+ if (netif_running(dev))
+ return -EBUSY;
+
+ itype = nl80211_type_to_mac80211_type(type);
+ if (itype == IEEE80211_IF_TYPE_INVALID)
+ return -EINVAL;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->type == IEEE80211_IF_TYPE_VLAN)
+ return -EOPNOTSUPP;
+
+ ieee80211_if_reinit(dev);
+ ieee80211_if_set_type(dev, itype);
+
+ return 0;
+}
+
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
+ .change_virtual_intf = ieee80211_change_iface,
};
-
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