On 2019-04-26 02:41, John Crispin wrote:
Allow the userland daemon to en/disable TWT support for an AP.

Signed-off-by: Shashidhar Lakkavalli <[email protected]>
Signed-off-by: John Crispin <[email protected]>
---
 include/net/cfg80211.h       | 2 ++
 include/net/mac80211.h       | 5 +++++
 include/uapi/linux/nl80211.h | 4 ++++
 net/mac80211/cfg.c           | 6 ++++++
 net/wireless/nl80211.c       | 6 ++++++
 5 files changed, 23 insertions(+)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index bb307a11ee63..8a20f5a42977 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1511,6 +1511,7 @@ struct mpath_info {
  *     (u16 = opmode, -1 = do not change)
  * @p2p_ctwindow: P2P CT Window (-1 = no change)
  * @p2p_opp_ps: P2P opportunistic PS (-1 = no change)
+ * @twt_responder: HE Target Wait Time support.


Responder support. Perhaps it could named as he_twt_resp to differentiate from ah.

  */
 struct bss_parameters {
        int use_cts_prot;
@@ -1521,6 +1522,7 @@ struct bss_parameters {
        int ap_isolate;
        int ht_opmode;
        s8 p2p_ctwindow, p2p_opp_ps;
+       int twt_responder;
 };

Same here. Better fix he_ in other places as well. thoughts?

 /**
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ac2ed8ec662b..87a6e149abda 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -317,6 +317,7 @@ struct ieee80211_vif_chanctx_switch {
* @BSS_CHANGED_MCAST_RATE: Multicast Rate setting changed for this interface * @BSS_CHANGED_FTM_RESPONDER: fime timing reasurement request responder
  *     functionality changed for this BSS (AP mode).
+ * @BSS_CHANGED_TWT: TWT enable status changed
  *
  */
 enum ieee80211_bss_change {
@@ -347,6 +348,7 @@ enum ieee80211_bss_change {
        BSS_CHANGED_KEEP_ALIVE          = 1<<24,
        BSS_CHANGED_MCAST_RATE          = 1<<25,
        BSS_CHANGED_FTM_RESPONDER       = 1<<26,
+       BSS_CHANGED_TWT                 = 1<<27,

        /* when adding here, make sure to change ieee80211_reconfig */
 };
@@ -504,6 +506,8 @@ struct ieee80211_ftm_responder_params {
  * @he_support: does this BSS support HE
* @twt_requester: does this BSS support TWT requester (relevant for managed
  *     mode only, set if the AP advertises TWT responder role)
+ * @twt_responder: does this BSS support TWT responder (relevant for AP
+ *     mode only, set if the AP advertises TWT responder role)
  * @assoc: association status
  * @ibss_joined: indicates whether this station is part of an IBSS
  *     or not
@@ -611,6 +615,7 @@ struct ieee80211_bss_conf {
        u16 frame_time_rts_th;
        bool he_support;
        bool twt_requester;
+       bool twt_responder;

ah.. I see existing twt_requester config.

        /* association related data */
        bool assoc, ibss_joined;
        bool ibss_creator;
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index dd4f86ee286e..ba1f69751a4a 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2308,6 +2308,8 @@ enum nl80211_commands {
* @NL80211_ATTR_AIRTIME_WEIGHT: Station's weight when scheduled by the airtime
  *     scheduler.
  *
+ * @NL80211_ATTR_TWT_RESPONDER: Enable target wait time responder support.
+ *
  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2759,6 +2761,8 @@ enum nl80211_attrs {

        NL80211_ATTR_AIRTIME_WEIGHT,

+       NL80211_ATTR_TWT_RESPONDER,
+
        /* add attributes here, update the policy in nl80211.c */

        __NL80211_ATTR_AFTER_LAST,
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 09dd1c2860fc..a66600bf9cef 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2176,6 +2176,12 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
                changed |= BSS_CHANGED_P2P_PS;
        }

+       if (params->twt_responder >= 0) {
+               sdata->vif.bss_conf.twt_responder =
+                       params->twt_responder;
+               changed |= BSS_CHANGED_TWT;
+       }
+
        ieee80211_bss_info_change_notify(sdata, changed);

        return 0;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 25a9e3b5c154..afd04a98a601 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -541,6 +541,7 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
        [NL80211_ATTR_PEER_MEASUREMENTS] =
                NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
        [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
+       [NL80211_ATTR_BSS_SHORT_PREAMBLE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
 };

Why SHORT_PREAMBLE? Why not attribute be NLA_FLAG?

-Rajkumar

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