ath10k: implement AP CSA

Most channel switching logic has been implemented
already so this patch is pretty small. The patch
makes use of mac80211's vif->csa_active for AP CSA
handling.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 8fe4517..4bf5f19 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3818,6 +3818,14 @@ static int ath10k_set_bitrate_mask(struct ieee80211_hw *hw,
        return ath10k_set_fixed_rate_param(arvif, fixed_rate, fixed_nss);
 }
 
+static void ath10k_channel_switch_beacon(struct ieee80211_hw *hw,
+                                        struct ieee80211_vif *vif,
+                                        struct cfg80211_chan_def *chandef)
+{
+       /* there's no need to do anything here. vif->csa_active is enough */
+       return;
+}
+
 static const struct ieee80211_ops ath10k_ops = {
        .tx                             = ath10k_tx,
        .start                          = ath10k_start,
@@ -3841,6 +3849,7 @@ static const struct ieee80211_ops ath10k_ops = {
        .restart_complete               = ath10k_restart_complete,
        .get_survey                     = ath10k_get_survey,
        .set_bitrate_mask               = ath10k_set_bitrate_mask,
+       .channel_switch_beacon          = ath10k_channel_switch_beacon,
 #ifdef CONFIG_PM
        .suspend                        = ath10k_suspend,
        .resume                         = ath10k_resume,
@@ -4220,6 +4229,7 @@ int ath10k_mac_register(struct ath10k *ar)
        ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;
 
        ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
+       ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
        ar->hw->wiphy->max_remain_on_channel_duration = 5000;
 
        ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;

diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index f0969cd..a1ec5d0 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -1405,6 +1405,17 @@ static void ath10k_wmi_event_host_swba(struct ath10k *ar, struct sk_buff *skb)
                        continue;
                }
 
+               /* There are no completions for beacons so wait for next SWBA
+                * before telling mac80211 to decrement CSA counter
+                *
+                * Once CSA counter is completed stop sending beacons until
+                * actual channel switch is done */
+               if (arvif->vif->csa_active &&
+                   ieee80211_csa_is_complete(arvif->vif)) {
+                       ieee80211_csa_finish(arvif->vif);
+                       continue;
+               }
+
                bcn = ieee80211_beacon_get(ar->hw, arvif->vif);
                if (!bcn) {
                        ath10k_warn("could not get mac80211 beacon\n");