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cfg80211/nl80211: add IBSS API

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This adds IBSS API along with (preliminary) wext handlers.
The wext handlers can only do IBSS so you need to call them
from your own wext handlers if the mode is IBSS.

The nl80211 API requires
 * an SSID
 * a channel (frequency) for the case that a new IBSS
   has to be created

It optionally supports
 * a flag to fix the channel
 * a fixed BSSID

The cfg80211 code also takes care to leave the IBSS before
the netdev is set down. If wireless extensions are used, it
also caches values when the interface is down and instructs
the driver to join when the interface is set up.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-04-19 21:24:32 +02:00
committed by John W. Linville
parent 691597cb26
commit 04a773ade0
10 changed files with 693 additions and 13 deletions
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16
net/wireless/core.c
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@@ -450,6 +450,22 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
dev->ieee80211_ptr->netdev = dev;
mutex_unlock(&rdev->devlist_mtx);
break;
case NETDEV_GOING_DOWN:
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
break;
if (!dev->ieee80211_ptr->ssid_len)
break;
cfg80211_leave_ibss(rdev, dev);
break;
case NETDEV_UP:
#ifdef CONFIG_WIRELESS_EXT
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
break;
if (!dev->ieee80211_ptr->wext.ssid_len)
break;
cfg80211_join_ibss(rdev, dev, &dev->ieee80211_ptr->wext);
break;
#endif
case NETDEV_UNREGISTER:
mutex_lock(&rdev->devlist_mtx);
if (!list_empty(&dev->ieee80211_ptr->list)) {