Issues wmi command to firmware when multicast rate change is received
with the new BSS_CHANGED_MCAST_RATE flag.

Signed-off-by: Pradeep Kumar Chitrapu <prade...@codeaurora.org>
---
 drivers/net/wireless/ath/ath10k/mac.c | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c 
b/drivers/net/wireless/ath/ath10k/mac.c
index bf05a36..63af46f 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -5419,8 +5419,12 @@ static void ath10k_bss_info_changed(struct ieee80211_hw 
*hw,
 {
        struct ath10k *ar = hw->priv;
        struct ath10k_vif *arvif = (void *)vif->drv_priv;
-       int ret = 0;
+       struct ieee80211_supported_band *sband;
+       struct cfg80211_chan_def def;
        u32 vdev_param, pdev_param, slottime, preamble;
+       int rate_index, ret = 0;
+       u8 rate;
+       enum nl80211_band band;
 
        mutex_lock(&ar->conf_mutex);
 
@@ -5588,6 +5592,25 @@ static void ath10k_bss_info_changed(struct ieee80211_hw 
*hw,
                                    arvif->vdev_id, ret);
        }
 
+       if (changed & BSS_CHANGED_MCAST_RATE &&
+           !WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def))) {
+               band = def.chan->band;
+               sband = &ar->mac.sbands[band];
+               vdev_param = ar->wmi.vdev_param->mcast_data_rate;
+               rate_index = vif->bss_conf.mcast_rate[band] - 1;
+               rate = ATH10K_HW_MCS_RATE(sband->bitrates[rate_index].hw_value);
+               ath10k_dbg(ar, ATH10K_DBG_MAC,
+                          "mac vdev %d mcast_rate %d\n",
+                          arvif->vdev_id, rate);
+
+               ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
+                                               vdev_param, rate);
+               if (ret)
+                       ath10k_warn(ar,
+                                   "failed to set mcast rate on vdev"
+                                   " %i: %d\n", arvif->vdev_id,  ret);
+       }
+
        mutex_unlock(&ar->conf_mutex);
 }
 
-- 
1.9.1

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