[PATCH V6 4/4] mac80211: CSA on non-transmitting interfaces

[Aloka Dixit <alokad@codeaurora.org>]

From: John Crispin <john@phrozen.org>

Trigger ieee80211_csa_finish() on the non-transmitting interfaces when
CSA concludes on the tranmitting interface.

Modify offset in beacon generation to reflect multiple BSSID element
length.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
---
v6: CSA is triggered on all interface, not only transmitting.

 net/mac80211/cfg.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 9c4346f69a7b..11a22a3b9cab 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -3239,6 +3239,17 @@ void ieee80211_csa_finish(struct ieee80211_vif *vif)
 {
 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
 
+	if (sdata->vif.multiple_bssid.flags & IEEE80211_VIF_MBSS_TRANSMITTING) {
+		struct ieee80211_sub_if_data *child;
+
+		rcu_read_lock();
+		list_for_each_entry_rcu(child, &sdata->local->interfaces, list)
+			if (child->vif.multiple_bssid.parent == &sdata->vif)
+				ieee80211_queue_work(&child->local->hw,
+						     &child->csa_finalize_work);
+		rcu_read_unlock();
+	}
+
 	ieee80211_queue_work(&sdata->local->hw,
 			     &sdata->csa_finalize_work);
 }
-- 
2.25.0