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authorArik Nemtsov <arik@wizery.com>2015-01-07 15:47:19 +0100
committerJohannes Berg <johannes.berg@intel.com>2015-01-14 09:43:44 +0100
commit2c3e861c94a29a30c75f60f2561b4ee70b3fb3a4 (patch)
tree83edc4013e502b66a541779c486a5bf53c51b5f5
parentmac80211: don't defer scans in case of radar detection (diff)
downloadlinux-2c3e861c94a29a30c75f60f2561b4ee70b3fb3a4.tar.xz
linux-2c3e861c94a29a30c75f60f2561b4ee70b3fb3a4.zip
cfg80211: introduce sync regdom set API for self-managed
A self-managed device will sometimes need to set its regdomain synchronously. Notably it should be set before usermode has a chance to query it. Expose a new API to accomplish this which requires the RTNL. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Reviewed-by: Ilan Peer <ilan.peer@intel.com> Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
-rw-r--r--include/net/cfg80211.h14
-rw-r--r--net/wireless/reg.c31
2 files changed, 43 insertions, 2 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 197735788f18..38abc07503fd 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -3789,6 +3789,20 @@ int regulatory_set_wiphy_regd(struct wiphy *wiphy,
struct ieee80211_regdomain *rd);
/**
+ * regulatory_set_wiphy_regd_sync_rtnl - set regdom for self-managed drivers
+ * @wiphy: the wireless device we want to process the regulatory domain on
+ * @rd: the regulatory domain information to use for this wiphy
+ *
+ * This functions requires the RTNL to be held and applies the new regdomain
+ * synchronously to this wiphy. For more details see
+ * regulatory_set_wiphy_regd().
+ *
+ * Return: 0 on success. -EINVAL, -EPERM
+ */
+int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
+ struct ieee80211_regdomain *rd);
+
+/**
* wiphy_apply_custom_regulatory - apply a custom driver regulatory domain
* @wiphy: the wireless device we want to process the regulatory domain on
* @regd: the custom regulatory domain to use for this wiphy
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 8d232b904210..f8ed79729eb0 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2897,8 +2897,8 @@ int set_regdom(const struct ieee80211_regdomain *rd)
return 0;
}
-int regulatory_set_wiphy_regd(struct wiphy *wiphy,
- struct ieee80211_regdomain *rd)
+static int __regulatory_set_wiphy_regd(struct wiphy *wiphy,
+ struct ieee80211_regdomain *rd)
{
const struct ieee80211_regdomain *regd;
const struct ieee80211_regdomain *prev_regd;
@@ -2928,12 +2928,39 @@ int regulatory_set_wiphy_regd(struct wiphy *wiphy,
spin_unlock(&reg_requests_lock);
kfree(prev_regd);
+ return 0;
+}
+
+int regulatory_set_wiphy_regd(struct wiphy *wiphy,
+ struct ieee80211_regdomain *rd)
+{
+ int ret = __regulatory_set_wiphy_regd(wiphy, rd);
+
+ if (ret)
+ return ret;
schedule_work(&reg_work);
return 0;
}
EXPORT_SYMBOL(regulatory_set_wiphy_regd);
+int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
+ struct ieee80211_regdomain *rd)
+{
+ int ret;
+
+ ASSERT_RTNL();
+
+ ret = __regulatory_set_wiphy_regd(wiphy, rd);
+ if (ret)
+ return ret;
+
+ /* process the request immediately */
+ reg_process_self_managed_hints();
+ return 0;
+}
+EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl);
+
void wiphy_regulatory_register(struct wiphy *wiphy)
{
struct regulatory_request *lr;