From: Luciano Coelho <luciano.coelho@xxxxxxxxx>
We need to call ieee80211_chswitch_done() ourselves just when the
absence TE started, so we perform the actual context switch early
enough. To do so, add a dummy channel_switch op, which will cause
mac80211 to skip the countdown timer and allow us to call
ieee80211_chswitch_done() to complete the operation.
Signed-off-by: Luciano Coelho <luciano.coelho@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/mvm/mac80211.c | 15 +++++++++++++++
drivers/net/wireless/iwlwifi/mvm/time-event.c | 1 +
2 files changed, 16 insertions(+)
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index c85c0f1..7acdfa7 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -3143,6 +3143,20 @@ static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
}
#endif
+static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_channel_switch *chsw)
+{
+ /* By implementing this operation, we prevent mac80211 from
+ * starting its own channel switch timer, so that we can call
+ * ieee80211_chswitch_done() ourselves at the right time
+ * (which is when the absence time event starts).
+ */
+
+ IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
+ "dummy channel switch op\n");
+}
+
static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel_switch *chsw)
@@ -3336,6 +3350,7 @@ const struct ieee80211_ops iwl_mvm_hw_ops = {
.set_tim = iwl_mvm_set_tim,
+ .channel_switch = iwl_mvm_channel_switch,
.pre_channel_switch = iwl_mvm_pre_channel_switch,
.post_channel_switch = iwl_mvm_post_channel_switch,
diff --git a/drivers/net/wireless/iwlwifi/mvm/time-event.c b/drivers/net/wireless/iwlwifi/mvm/time-event.c
index 1a537be..ff631cc 100644
--- a/drivers/net/wireless/iwlwifi/mvm/time-event.c
+++ b/drivers/net/wireless/iwlwifi/mvm/time-event.c
@@ -207,6 +207,7 @@ iwl_mvm_te_handle_notify_csa(struct iwl_mvm *mvm,
break;
case NL80211_IFTYPE_STATION:
iwl_mvm_csa_client_absent(mvm, te_data->vif);
+ ieee80211_chswitch_done(te_data->vif, true);
break;
default:
/* should never happen */
--
1.9.1
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