cfg80211/nl80211: scanning (and mac80211 update to use it)
This patch adds basic scan capability to cfg80211/nl80211 and
changes mac80211 to use it. The BSS list that cfg80211 maintains
is made driver-accessible with a private area in each BSS struct,
but mac80211 doesn't yet use it. That's another large project.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 1252264..3cccd13 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -240,6 +240,8 @@
mutex_init(&drv->mtx);
mutex_init(&drv->devlist_mtx);
INIT_LIST_HEAD(&drv->netdev_list);
+ spin_lock_init(&drv->bss_lock);
+ INIT_LIST_HEAD(&drv->bss_list);
device_initialize(&drv->wiphy.dev);
drv->wiphy.dev.class = &ieee80211_class;
@@ -259,6 +261,9 @@
int i;
u16 ifmodes = wiphy->interface_modes;
+ if (WARN_ON(wiphy->max_scan_ssids < 1))
+ return -EINVAL;
+
/* sanity check ifmodes */
WARN_ON(!ifmodes);
ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1;
@@ -367,8 +372,11 @@
void cfg80211_dev_free(struct cfg80211_registered_device *drv)
{
+ struct cfg80211_internal_bss *scan, *tmp;
mutex_destroy(&drv->mtx);
mutex_destroy(&drv->devlist_mtx);
+ list_for_each_entry_safe(scan, tmp, &drv->bss_list, list)
+ kfree(scan);
kfree(drv);
}