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mac80211: support runtime interface type changes

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Add support to mac80211 for changing the interface
type even when the interface is UP, if the driver
supports it.

To achieve this
 * add a new driver callback for switching,
 * split some of the interface up/down code out
   into new functions (do_open/do_stop), and
 * maintain an own __SDATA_RUNNING bit that will
   not be set during interface type, so that any
   other code doesn't use the interface.

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 12:35:58 +02:00
committed by John W. Linville
parent 87490f6db3
commit 34d4bc4d41
6 changed files with 185 additions and 37 deletions
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3
net/mac80211/cfg.c
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@ -52,9 +52,6 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int ret;
if (ieee80211_sdata_running(sdata))
return -EBUSY;
ret = ieee80211_if_change_type(sdata, type);
if (ret)
return ret;