ath10k: allow dynamic bandwidth in hw rate control

Frames were never retransmitted with
different/lower bandwidths, e.g. only 80MHz
bandwidth was used when dealing with a VHT80
peer.

Allow HW rate control to try out different
bandwidths when retransmitting. This increases
robustness.

Also, document the parameter properly.

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 56f030ed357a2cad57c7651e0280eb31e5f88e66..db819429134ab91699b076d4e654dab8db652031 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -1964,7 +1964,7 @@ static int ath10k_start(struct ieee80211_hw *hw)
                ath10k_warn("could not enable WMI_PDEV_PARAM_PMF_QOS (%d)\n",
                            ret);
 
-       ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 0);
+       ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
        if (ret)
                ath10k_warn("could not init WMI_PDEV_PARAM_DYNAMIC_BW (%d)\n",
                            ret);

diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h
index 81e33a7dbaf2cf7e6de73d4f4967c0166034900f..8b824f9c2f1e575a5bbc68bcff2e275363e91616 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/wmi.h
+++ b/drivers/net/wireless/ath/ath10k/wmi.h
@@ -2234,7 +2234,12 @@ enum wmi_pdev_param {
         * 0: no protection 1:use CTS-to-self 2: use RTS/CTS
         */
        WMI_PDEV_PARAM_PROTECTION_MODE,
-       /* Dynamic bandwidth 0: disable 1: enable */
+       /*
+        * Dynamic bandwidth - 0: disable, 1: enable
+        *
+        * When enabled HW rate control tries different bandwidths when
+        * retransmitting frames.
+        */
        WMI_PDEV_PARAM_DYNAMIC_BW,
        /* Non aggregrate/ 11g sw retry threshold.0-disable */
        WMI_PDEV_PARAM_NON_AGG_SW_RETRY_TH,