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authorAmar Singhal <asinghal@codeaurora.org>2018-04-26 20:13:07 +0300
committerJohannes Berg <johannes.berg@intel.com>2018-05-07 20:57:41 +0200
commitaced43ce780dc5e683b3de00ce9fb3db7d28e1d3 (patch)
tree92926919db9d9eb372bb833d39e44bb38407c2f4 /net/wireless
parent50f32718e125c3be5b0528bfa3868e88d677d8ce (diff)
downloadlinux-aced43ce780dc5e683b3de00ce9fb3db7d28e1d3.tar.bz2
cfg80211: Call reg_notifier for self managed hints conditionally
Currently the regulatory core does not call the regulatory callback reg_notifier for self managed wiphys, but regulatory_hint_user() call is independent of wiphy and is meant for all wiphys in the system. Even a self managed wiphy may be interested in regulatory_hint_user() to know the country code from a trusted regulatory domain change like a cellular base station. Therefore, for the regulatory source NL80211_REGDOM_SET_BY_USER and the user hint type NL80211_USER_REG_HINT_CELL_BASE, call the regulatory notifier. No current wlan driver uses the REGULATORY_WIPHY_SELF_MANAGED flag while also registering the reg_notifier regulatory callback, therefore there will be no impact on existing drivers without them being explicitly modified to take advantage of this new possibility. Signed-off-by: Amar Singhal <asinghal@codeaurora.org> Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/reg.c33
1 files changed, 29 insertions, 4 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index ecfee5f06c76..69cf79165d43 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2768,6 +2768,21 @@ out_free:
reg_free_request(reg_request);
}
+static void notify_self_managed_wiphys(struct regulatory_request *request)
+{
+ struct cfg80211_registered_device *rdev;
+ struct wiphy *wiphy;
+
+ list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ wiphy = &rdev->wiphy;
+ if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
+ request->initiator == NL80211_REGDOM_SET_BY_USER &&
+ request->user_reg_hint_type ==
+ NL80211_USER_REG_HINT_CELL_BASE)
+ reg_call_notifier(wiphy, request);
+ }
+}
+
static bool reg_only_self_managed_wiphys(void)
{
struct cfg80211_registered_device *rdev;
@@ -2819,6 +2834,7 @@ static void reg_process_pending_hints(void)
spin_unlock(&reg_requests_lock);
+ notify_self_managed_wiphys(reg_request);
if (reg_only_self_managed_wiphys()) {
reg_free_request(reg_request);
return;
@@ -3698,17 +3714,26 @@ EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl);
void wiphy_regulatory_register(struct wiphy *wiphy)
{
- struct regulatory_request *lr;
+ struct regulatory_request *lr = get_last_request();
- /* self-managed devices ignore external hints */
- if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED)
+ /* self-managed devices ignore beacon hints and country IE */
+ if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {
wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS |
REGULATORY_COUNTRY_IE_IGNORE;
+ /*
+ * The last request may have been received before this
+ * registration call. Call the driver notifier if
+ * initiator is USER and user type is CELL_BASE.
+ */
+ if (lr->initiator == NL80211_REGDOM_SET_BY_USER &&
+ lr->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE)
+ reg_call_notifier(wiphy, lr);
+ }
+
if (!reg_dev_ignore_cell_hint(wiphy))
reg_num_devs_support_basehint++;
- lr = get_last_request();
wiphy_update_regulatory(wiphy, lr->initiator);
wiphy_all_share_dfs_chan_state(wiphy);
}