[PATCH V2 0/3] mac80211: add code to explicitly enable TWT support inside the driver

[PATCH V2 0/3] mac80211: add code to explicitly enable TWT support inside the driver

[John Crispin]

At least ath11k needs an extra FW call to enable TWT inside the HW. This
series adds code to trigger this from within start_ap() and also STA assoc
events.

Changes in V2
* fix 2 typos
* move from bbs_config to start_ap

John Crispin (3):
  mac80211: dynamically enable the TWT requester support on STA
    interfaces
  mac80211: allow turning TWT responder support on and off via netlink
  ath11k: add TWT support

 drivers/net/wireless/ath/ath11k/mac.c |  7 +++
 drivers/net/wireless/ath/ath11k/wmi.c | 91 +++++++++++++++++++++++++++++++++++
 drivers/net/wireless/ath/ath11k/wmi.h | 71 +++++++++++++++++++++++++++
 include/net/cfg80211.h                |  2 +
 include/net/mac80211.h                |  5 ++
 include/uapi/linux/nl80211.h          |  4 ++
 net/mac80211/cfg.c                    |  4 +-
 net/mac80211/mlme.c                   | 18 ++++++-
 net/wireless/nl80211.c                |  5 ++
 9 files changed, 204 insertions(+), 3 deletions(-)

-- 
2.11.0

[PATCH V2 1/3] mac80211: dynamically enable the TWT requester support on STA interfaces

[John Crispin]

Turn TWT for STA interfaces when they associate and/or receive a
beacon where the twt_responder bit has changed.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
---
 include/net/mac80211.h |  2 ++
 net/mac80211/mlme.c    | 18 ++++++++++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ac2ed8ec662b..2504a6cd8ca9 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 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 */
 };
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 2dbcf5d5512e..0d6ede3b6320 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3151,6 +3151,19 @@ static bool ieee80211_twt_req_supported(const struct sta_info *sta,
 		IEEE80211_HE_MAC_CAP0_TWT_RES;
 }
 
+static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
+				    struct sta_info *sta,
+				    struct ieee802_11_elems *elems)
+{
+	bool twt = ieee80211_twt_req_supported(sta, elems);
+
+	if (sdata->vif.bss_conf.twt_requester != twt) {
+		sdata->vif.bss_conf.twt_requester = twt;
+		return BSS_CHANGED_TWT;
+	}
+	return 0;
+}
+
 static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 				    struct cfg80211_bss *cbss,
 				    struct ieee80211_mgmt *mgmt, size_t len)
@@ -3333,8 +3346,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 						  sta);
 
 		bss_conf->he_support = sta->sta.he_cap.has_he;
-		bss_conf->twt_requester =
-			ieee80211_twt_req_supported(sta, &elems);
+		changed |= ieee80211_recalc_twt_req(sdata, sta, &elems);
 	} else {
 		bss_conf->he_support = false;
 		bss_conf->twt_requester = false;
@@ -3994,6 +4006,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	mutex_lock(&local->sta_mtx);
 	sta = sta_info_get(sdata, bssid);
 
+	changed |= ieee80211_recalc_twt_req(sdata, sta, &elems);
+
 	if (ieee80211_config_bw(sdata, sta,
 				elems.ht_cap_elem, elems.ht_operation,
 				elems.vht_operation, elems.he_operation,
-- 
2.11.0

Re: [PATCH V2 1/3] mac80211: dynamically enable the TWT requester support on STA interfaces

[Kalle Valo]

John Crispin <john@phrozen.org> writes:

> Turn TWT for STA interfaces when they associate and/or receive a
> beacon where the twt_responder bit has changed.
>
> Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
> Signed-off-by: John Crispin <john@phrozen.org>

Nothing important, but nowadays we have Co-developed-by which is a nice
way to document multiple authors (I'm assuming that's the case here):

https://www.kernel.org/doc/html/latest/process/submitting-patches.html#when-to-use-acked-by-cc-and-co-developed-by

-- 
Kalle Valo

[PATCH V2 2/3] mac80211: allow turning TWT responder support on and off via netlink

[John Crispin]

Allow the userland daemon to en/disable TWT support for an AP.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
---
 include/net/cfg80211.h       | 2 ++
 include/net/mac80211.h       | 3 +++
 include/uapi/linux/nl80211.h | 4 ++++
 net/mac80211/cfg.c           | 4 +++-
 net/wireless/nl80211.c       | 5 +++++
 5 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index bb307a11ee63..c4fe1bf10289 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -876,6 +876,7 @@ enum cfg80211_ap_settings_flags {
  * @he_cap: HE capabilities (or %NULL if HE isn't enabled)
  * @ht_required: stations must support HT
  * @vht_required: stations must support VHT
+ * @twt_responder: Enable Target Wait Time
  * @flags: flags, as defined in enum cfg80211_ap_settings_flags
  */
 struct cfg80211_ap_settings {
@@ -902,6 +903,7 @@ struct cfg80211_ap_settings {
 	const struct ieee80211_vht_cap *vht_cap;
 	const struct ieee80211_he_cap_elem *he_cap;
 	bool ht_required, vht_required;
+	bool twt_responder;
 	u32 flags;
 };
 
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 2504a6cd8ca9..3c916d5de8c8 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -506,6 +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 requester (relevant for managed
+ *	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
@@ -613,6 +615,7 @@ struct ieee80211_bss_conf {
 	u16 frame_time_rts_th;
 	bool he_support;
 	bool twt_requester;
+	bool twt_responder;
 	/* 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..8be2f32fedfc 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -939,7 +939,8 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 		      BSS_CHANGED_BEACON |
 		      BSS_CHANGED_SSID |
 		      BSS_CHANGED_P2P_PS |
-		      BSS_CHANGED_TXPOWER;
+		      BSS_CHANGED_TXPOWER |
+		      BSS_CHANGED_TWT;
 	int err;
 	int prev_beacon_int;
 
@@ -1009,6 +1010,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 	sdata->vif.bss_conf.dtim_period = params->dtim_period;
 	sdata->vif.bss_conf.enable_beacon = true;
 	sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
+	sdata->vif.bss_conf.twt_responder = params->twt_responder;
 
 	sdata->vif.bss_conf.ssid_len = params->ssid_len;
 	if (params->ssid_len)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 25a9e3b5c154..643f53dc2c89 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_TWT_RESPONDER] = { .type = NLA_FLAG },
 };
 
 /* policy for the key attributes */
@@ -4531,6 +4532,10 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 			return PTR_ERR(params.acl);
 	}
 
+	if (info->attrs[NL80211_ATTR_TWT_RESPONDER])
+		params.twt_responder =
+		    nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
+
 	nl80211_calculate_ap_params(&params);
 
 	if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
-- 
2.11.0

[PATCH V2 3/3] ath11k: add TWT support

[John Crispin]

Add target wait time wmi calls to the driver. En/disable the support
from when the bss_config changes. We ignore the cmd completion events.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
---
 drivers/net/wireless/ath/ath11k/mac.c |  7 +++
 drivers/net/wireless/ath/ath11k/wmi.c | 91 +++++++++++++++++++++++++++++++++++
 drivers/net/wireless/ath/ath11k/wmi.h | 71 +++++++++++++++++++++++++++
 3 files changed, 169 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index 2c7afbc7b9a6..e3f9d288c357 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -1938,6 +1938,13 @@ static void ath11k_bss_info_changed(struct ieee80211_hw *hw,
 		ath11k_mac_txpower_recalc(ar);
 	}
 
+	if (changed & BSS_CHANGED_TWT) {
+		if (info->twt_requester || info->twt_responder)
+			ath11k_wmi_send_twt_enable_cmd(ar, ar->pdev_idx);
+		else
+			ath11k_wmi_send_twt_disable_cmd(ar, ar->pdev_idx);
+	}
+
 	mutex_unlock(&ar->conf_mutex);
 }
 
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index 7edaed5c97df..52d6fb200d07 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -1797,6 +1797,10 @@ ath11k_wmi_copy_peer_flags(struct wmi_peer_assoc_complete_cmd *cmd,
 			cmd->peer_flags |= WMI_PEER_VHT;
 		if (param->he_flag)
 			cmd->peer_flags |= WMI_PEER_HE;
+		if (param->twt_requester)
+			cmd->peer_flags |= WMI_PEER_TWT_REQ;
+		if (param->twt_responder)
+			cmd->peer_flags |= WMI_PEER_TWT_RESP;
 	}
 
 	/* Suppress authorization for all AUTH modes that need 4-way handshake
@@ -2787,6 +2791,86 @@ int ath11k_wmi_pdev_pktlog_disable(struct ath11k *ar)
 	return ret;
 }
 
+int
+ath11k_wmi_send_twt_enable_cmd(struct ath11k *ar, u32 pdev_id)
+{
+	struct ath11k_pdev_wmi *wmi = ar->wmi;
+	struct ath11k_base *ab = wmi->wmi_sc->sc;
+	struct wmi_twt_enable_params_cmd *cmd;
+	struct sk_buff *skb;
+	int ret, len;
+
+	len = sizeof(*cmd);
+
+	skb = ath11k_wmi_alloc_skb(wmi->wmi_sc, len);
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (void *)skb->data;
+	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_TWT_ENABLE_CMD) |
+			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
+	cmd->pdev_id = pdev_id;
+	cmd->sta_cong_timer_ms = ATH11K_TWT_DEF_STA_CONG_TIMER_MS;
+	cmd->default_slot_size = ATH11K_TWT_DEF_DEFAULT_SLOT_SIZE;
+	cmd->congestion_thresh_setup = ATH11K_TWT_DEF_CONGESTION_THRESH_SETUP;
+	cmd->congestion_thresh_teardown =
+		ATH11K_TWT_DEF_CONGESTION_THRESH_TEARDOWN;
+	cmd->congestion_thresh_critical =
+		ATH11K_TWT_DEF_CONGESTION_THRESH_CRITICAL;
+	cmd->interference_thresh_teardown =
+		ATH11K_TWT_DEF_INTERFERENCE_THRESH_TEARDOWN;
+	cmd->interference_thresh_setup =
+		ATH11K_TWT_DEF_INTERFERENCE_THRESH_SETUP;
+	cmd->min_no_sta_setup = ATH11K_TWT_DEF_MIN_NO_STA_SETUP;
+	cmd->min_no_sta_teardown = ATH11K_TWT_DEF_MIN_NO_STA_TEARDOWN;
+	cmd->no_of_bcast_mcast_slots = ATH11K_TWT_DEF_NO_OF_BCAST_MCAST_SLOTS;
+	cmd->min_no_twt_slots = ATH11K_TWT_DEF_MIN_NO_TWT_SLOTS;
+	cmd->max_no_sta_twt = ATH11K_TWT_DEF_MAX_NO_STA_TWT;
+	cmd->mode_check_interval = ATH11K_TWT_DEF_MODE_CHECK_INTERVAL;
+	cmd->add_sta_slot_interval = ATH11K_TWT_DEF_ADD_STA_SLOT_INTERVAL;
+	cmd->remove_sta_slot_interval =
+		ATH11K_TWT_DEF_REMOVE_STA_SLOT_INTERVAL;
+	/* TODO add MBSSID support */
+	cmd->mbss_support = 0;
+
+	ret = ath11k_wmi_cmd_send(wmi, skb,
+				  WMI_TWT_ENABLE_CMDID);
+	if (ret) {
+		ath11k_warn(ab, "Failed to send WMI_TWT_ENABLE_CMDID");
+		dev_kfree_skb(skb);
+	}
+	return ret;
+}
+
+int
+ath11k_wmi_send_twt_disable_cmd(struct ath11k *ar, u32 pdev_id)
+{
+	struct ath11k_pdev_wmi *wmi = ar->wmi;
+	struct ath11k_base *ab = wmi->wmi_sc->sc;
+	struct wmi_twt_disable_params_cmd *cmd;
+	struct sk_buff *skb;
+	int ret, len;
+
+	len = sizeof(*cmd);
+
+	skb = ath11k_wmi_alloc_skb(wmi->wmi_sc, len);
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (void *)skb->data;
+	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_TWT_DISABLE_CMD) |
+			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
+	cmd->pdev_id = pdev_id;
+
+	ret = ath11k_wmi_cmd_send(wmi, skb,
+				  WMI_TWT_DISABLE_CMDID);
+	if (ret) {
+		ath11k_warn(ab, "Failed to send WMI_TWT_DIeABLE_CMDID");
+		dev_kfree_skb(skb);
+	}
+	return ret;
+}
+
 static inline void ath11k_fill_band_to_mac_param(struct ath11k_base  *soc,
 				struct wmi_host_pdev_band_to_mac *band_to_mac)
 {
@@ -2877,6 +2961,9 @@ ath11k_wmi_copy_resource_config(struct wmi_resource_config *wmi_cfg,
 	wmi_cfg->use_pdev_id = tg_cfg->use_pdev_id;
 	wmi_cfg->flag1 = tg_cfg->atf_config;
 	wmi_cfg->peer_map_unmap_v2_support = tg_cfg->peer_map_unmap_v2_support;
+	wmi_cfg->sched_params = tg_cfg->sched_params;
+	wmi_cfg->twt_ap_pdev_count = tg_cfg->twt_ap_pdev_count;
+	wmi_cfg->twt_ap_sta_count = tg_cfg->twt_ap_sta_count;
 }
 
 static int ath11k_init_cmd_send(struct ath11k_pdev_wmi *wmi,
@@ -3068,6 +3155,8 @@ int ath11k_wmi_cmd_init(struct ath11k_base *sc)
 	config.beacon_tx_offload_max_vdev = sc->num_radios * TARGET_MAX_BCN_OFFLD;
 	config.rx_batchmode = TARGET_RX_BATCHMODE;
 	config.peer_map_unmap_v2_support = 1;
+	config.twt_ap_pdev_count = 2;
+	config.twt_ap_sta_count = 1000;
 
 	memcpy(&wmi_sc->wlan_resource_config, &config, sizeof(config));
 
@@ -5859,6 +5948,8 @@ static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb)
 	/* add Unsupported events here */
 	case WMI_TBTTOFFSET_EXT_UPDATE_EVENTID:
 	case WMI_VDEV_DELETE_RESP_EVENTID:
+	case WMI_TWT_ENABLE_EVENTID:
+	case WMI_TWT_DISABLE_EVENTID:
 		ath11k_dbg(ab, ATH11K_DBG_WMI,
 			   "ignoring unsupported event 0x%x\n", id);
 		break;
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 071537850c68..99f69fc3cf53 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -169,6 +169,10 @@ enum wmi_cmd_group {
 	WMI_GRP_MONITOR,        /* 0x39 */
 	WMI_GRP_REGULATORY,     /* 0x3a */
 	WMI_GRP_HW_DATA_FILTER, /* 0x3b */
+	WMI_GRP_WLM,            /* 0x3c */
+	WMI_GRP_11K_OFFLOAD,    /* 0x3d */
+	WMI_GRP_TWT,            /* 0x3e */
+
 };
 
 #define WMI_CMD_GRP(grp_id) (((grp_id) << 12) | 0x1)
@@ -531,6 +535,12 @@ enum wmi_tlv_cmd_id {
 	WMI_NDP_RESPONDER_REQ_CMDID,
 	WMI_NDP_END_REQ_CMDID,
 	WMI_HW_DATA_FILTER_CMDID = WMI_TLV_CMD(WMI_GRP_HW_DATA_FILTER),
+	WMI_TWT_ENABLE_CMDID = WMI_TLV_CMD(WMI_GRP_TWT),
+	WMI_TWT_DISABLE_CMDID,
+	WMI_TWT_ADD_DIALOG_CMDID,
+	WMI_TWT_DEL_DIALOG_CMDID,
+	WMI_TWT_PAUSE_DIALOG_CMDID,
+	WMI_TWT_RESUME_DIALOG_CMDID,
 };
 
 enum wmi_tlv_event_id {
@@ -713,6 +723,13 @@ enum wmi_tlv_event_id {
 	WMI_NDP_INDICATION_EVENTID,
 	WMI_NDP_CONFIRM_EVENTID,
 	WMI_NDP_END_INDICATION_EVENTID,
+
+	WMI_TWT_ENABLE_EVENTID = WMI_TLV_CMD(WMI_GRP_TWT),
+	WMI_TWT_DISABLE_EVENTID,
+	WMI_TWT_ADD_DIALOG_EVENTID,
+	WMI_TWT_DEL_DIALOG_EVENTID,
+	WMI_TWT_PAUSE_DIALOG_EVENTID,
+	WMI_TWT_RESUME_DIALOG_EVENTID,
 };
 
 enum wmi_tlv_pdev_param {
@@ -2736,6 +2753,9 @@ struct wmi_resource_config {
 	u32 max_num_dbs_scan_duty_cycle;
 	u32 max_num_group_keys;
 	u32 peer_map_unmap_v2_support;
+	u32 sched_params;
+	u32 twt_ap_pdev_count;
+	u32 twt_ap_sta_count;
 } __packed;
 
 struct wmi_service_ready_event {
@@ -3907,6 +3927,8 @@ struct peer_assoc_params {
 	u32 peer_he_mcs_count;
 	u32 peer_he_rx_mcs_set[WMI_HOST_MAX_HE_RATE_SET];
 	u32 peer_he_tx_mcs_set[WMI_HOST_MAX_HE_RATE_SET];
+	bool twt_responder;
+	bool twt_requester;
 	struct ath11k_ppe_threshold peer_ppet;
 };
 
@@ -4130,6 +4152,8 @@ struct wmi_pktlog_disable_cmd {
 #define WMI_PEER_DYN_MIMOPS	0x00020000
 #define WMI_PEER_STATIC_MIMOPS	0x00040000
 #define WMI_PEER_SPATIAL_MUX	0x00200000
+#define WMI_PEER_TWT_REQ	0x00400000
+#define WMI_PEER_TWT_RESP	0x00800000
 #define WMI_PEER_VHT		0x02000000
 #define WMI_PEER_80MHZ		0x04000000
 #define WMI_PEER_PMF		0x08000000
@@ -5005,6 +5029,48 @@ struct wmi_wmm_params_all_arg {
 	struct wmi_wmm_params_arg ac_vo;
 };
 
+#define ATH11K_TWT_DEF_STA_CONG_TIMER_MS		5000
+#define ATH11K_TWT_DEF_DEFAULT_SLOT_SIZE		10
+#define ATH11K_TWT_DEF_CONGESTION_THRESH_SETUP		50
+#define ATH11K_TWT_DEF_CONGESTION_THRESH_TEARDOWN	20
+#define ATH11K_TWT_DEF_CONGESTION_THRESH_CRITICAL	100
+#define ATH11K_TWT_DEF_INTERFERENCE_THRESH_TEARDOWN	80
+#define ATH11K_TWT_DEF_INTERFERENCE_THRESH_SETUP	50
+#define ATH11K_TWT_DEF_MIN_NO_STA_SETUP			10
+#define ATH11K_TWT_DEF_MIN_NO_STA_TEARDOWN		2
+#define ATH11K_TWT_DEF_NO_OF_BCAST_MCAST_SLOTS		2
+#define ATH11K_TWT_DEF_MIN_NO_TWT_SLOTS			2
+#define ATH11K_TWT_DEF_MAX_NO_STA_TWT			500
+#define ATH11K_TWT_DEF_MODE_CHECK_INTERVAL		10000
+#define ATH11K_TWT_DEF_ADD_STA_SLOT_INTERVAL		1000
+#define ATH11K_TWT_DEF_REMOVE_STA_SLOT_INTERVAL		5000
+
+struct wmi_twt_enable_params_cmd {
+	u32 tlv_header;
+	u32 pdev_id;
+	u32 sta_cong_timer_ms;
+	u32 mbss_support;
+	u32 default_slot_size;
+	u32 congestion_thresh_setup;
+	u32 congestion_thresh_teardown;
+	u32 congestion_thresh_critical;
+	u32 interference_thresh_teardown;
+	u32 interference_thresh_setup;
+	u32 min_no_sta_setup;
+	u32 min_no_sta_teardown;
+	u32 no_of_bcast_mcast_slots;
+	u32 min_no_twt_slots;
+	u32 max_no_sta_twt;
+	u32 mode_check_interval;
+	u32 add_sta_slot_interval;
+	u32 remove_sta_slot_interval;
+};
+
+struct wmi_twt_disable_params_cmd {
+	u32 tlv_header;
+	u32 pdev_id;
+};
+
 struct target_resource_config {
 	u32 num_vdevs;
 	u32 num_peers;
@@ -5065,6 +5131,9 @@ struct target_resource_config {
 	u32 max_bssid_rx_filters;
 	u32 use_pdev_id;
 	u32 peer_map_unmap_v2_support;
+	u32 sched_params;
+	u32 twt_ap_pdev_count;
+	u32 twt_ap_sta_count;
 };
 
 #define WMI_MAX_MEM_REQS 32
@@ -5190,4 +5259,6 @@ size_t ath11k_wmi_fw_stats_num_vdevs(struct list_head *head);
 void ath11k_wmi_fw_stats_fill(struct ath11k *ar,
 			      struct ath11k_fw_stats *fw_stats, u32 stats_id,
 			      char *buf);
+int ath11k_wmi_send_twt_enable_cmd(struct ath11k *ar, u32 pdev_id);
+int ath11k_wmi_send_twt_disable_cmd(struct ath11k *ar, u32 pdev_id);
 #endif
-- 
2.11.0

[PATCH V2 0/3] mac80211: notify the driver when it should enable TWT

[John Crispin]

The ath11k FW has dedicated calls for setting the TWT state. Trigger these
via the BSS config changes.

In a later step we need to also add calls for manually starting TWT dialogs.

Changes in V2
* add NLA_POLICY_RANGE for NL80211_ATTR_TWT_RESPONDER

John Crispin (3):
  mac80211: allow turning TWT responder support on and off via netlink
  mac80211: dynamically turn TWT requester support on and off
  ath11k: add TWT support

 drivers/net/wireless/ath/ath11k/mac.c |  7 +++
 drivers/net/wireless/ath/ath11k/wmi.c | 91 +++++++++++++++++++++++++++++++++++
 drivers/net/wireless/ath/ath11k/wmi.h | 71 +++++++++++++++++++++++++++
 include/net/cfg80211.h                |  2 +
 include/net/mac80211.h                |  5 ++
 include/uapi/linux/nl80211.h          |  4 ++
 net/mac80211/cfg.c                    |  6 +++
 net/mac80211/mlme.c                   | 20 +++++++-
 net/wireless/nl80211.c                |  6 +++
 9 files changed, 210 insertions(+), 2 deletions(-)

-- 
2.11.0

[PATCH V2 3/3] ath11k: add TWT support

[John Crispin]

Add target wait time wmi calls to the driver. En/disable the support
from when the bss_config changes. We ignore the cmd completion events.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
---
 drivers/net/wireless/ath/ath11k/mac.c |  7 +++
 drivers/net/wireless/ath/ath11k/wmi.c | 91 +++++++++++++++++++++++++++++++++++
 drivers/net/wireless/ath/ath11k/wmi.h | 71 +++++++++++++++++++++++++++
 3 files changed, 169 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index 8bb4ff82fb6f..a38c101e0140 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -1938,6 +1938,13 @@ static void ath11k_bss_info_changed(struct ieee80211_hw *hw,
 		ath11k_mac_txpower_recalc(ar);
 	}
 
+	if (changed & BSS_CHANGED_TWT) {
+		if (info->twt_responder || info->twt_responder)
+			ath11k_wmi_send_twt_enable_cmd(ar, ar->pdev_idx);
+		else
+			ath11k_wmi_send_twt_disable_cmd(ar, ar->pdev_idx);
+	}
+
 	mutex_unlock(&ar->conf_mutex);
 }
 
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index 7edaed5c97df..52d6fb200d07 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -1797,6 +1797,10 @@ ath11k_wmi_copy_peer_flags(struct wmi_peer_assoc_complete_cmd *cmd,
 			cmd->peer_flags |= WMI_PEER_VHT;
 		if (param->he_flag)
 			cmd->peer_flags |= WMI_PEER_HE;
+		if (param->twt_requester)
+			cmd->peer_flags |= WMI_PEER_TWT_REQ;
+		if (param->twt_responder)
+			cmd->peer_flags |= WMI_PEER_TWT_RESP;
 	}
 
 	/* Suppress authorization for all AUTH modes that need 4-way handshake
@@ -2787,6 +2791,86 @@ int ath11k_wmi_pdev_pktlog_disable(struct ath11k *ar)
 	return ret;
 }
 
+int
+ath11k_wmi_send_twt_enable_cmd(struct ath11k *ar, u32 pdev_id)
+{
+	struct ath11k_pdev_wmi *wmi = ar->wmi;
+	struct ath11k_base *ab = wmi->wmi_sc->sc;
+	struct wmi_twt_enable_params_cmd *cmd;
+	struct sk_buff *skb;
+	int ret, len;
+
+	len = sizeof(*cmd);
+
+	skb = ath11k_wmi_alloc_skb(wmi->wmi_sc, len);
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (void *)skb->data;
+	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_TWT_ENABLE_CMD) |
+			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
+	cmd->pdev_id = pdev_id;
+	cmd->sta_cong_timer_ms = ATH11K_TWT_DEF_STA_CONG_TIMER_MS;
+	cmd->default_slot_size = ATH11K_TWT_DEF_DEFAULT_SLOT_SIZE;
+	cmd->congestion_thresh_setup = ATH11K_TWT_DEF_CONGESTION_THRESH_SETUP;
+	cmd->congestion_thresh_teardown =
+		ATH11K_TWT_DEF_CONGESTION_THRESH_TEARDOWN;
+	cmd->congestion_thresh_critical =
+		ATH11K_TWT_DEF_CONGESTION_THRESH_CRITICAL;
+	cmd->interference_thresh_teardown =
+		ATH11K_TWT_DEF_INTERFERENCE_THRESH_TEARDOWN;
+	cmd->interference_thresh_setup =
+		ATH11K_TWT_DEF_INTERFERENCE_THRESH_SETUP;
+	cmd->min_no_sta_setup = ATH11K_TWT_DEF_MIN_NO_STA_SETUP;
+	cmd->min_no_sta_teardown = ATH11K_TWT_DEF_MIN_NO_STA_TEARDOWN;
+	cmd->no_of_bcast_mcast_slots = ATH11K_TWT_DEF_NO_OF_BCAST_MCAST_SLOTS;
+	cmd->min_no_twt_slots = ATH11K_TWT_DEF_MIN_NO_TWT_SLOTS;
+	cmd->max_no_sta_twt = ATH11K_TWT_DEF_MAX_NO_STA_TWT;
+	cmd->mode_check_interval = ATH11K_TWT_DEF_MODE_CHECK_INTERVAL;
+	cmd->add_sta_slot_interval = ATH11K_TWT_DEF_ADD_STA_SLOT_INTERVAL;
+	cmd->remove_sta_slot_interval =
+		ATH11K_TWT_DEF_REMOVE_STA_SLOT_INTERVAL;
+	/* TODO add MBSSID support */
+	cmd->mbss_support = 0;
+
+	ret = ath11k_wmi_cmd_send(wmi, skb,
+				  WMI_TWT_ENABLE_CMDID);
+	if (ret) {
+		ath11k_warn(ab, "Failed to send WMI_TWT_ENABLE_CMDID");
+		dev_kfree_skb(skb);
+	}
+	return ret;
+}
+
+int
+ath11k_wmi_send_twt_disable_cmd(struct ath11k *ar, u32 pdev_id)
+{
+	struct ath11k_pdev_wmi *wmi = ar->wmi;
+	struct ath11k_base *ab = wmi->wmi_sc->sc;
+	struct wmi_twt_disable_params_cmd *cmd;
+	struct sk_buff *skb;
+	int ret, len;
+
+	len = sizeof(*cmd);
+
+	skb = ath11k_wmi_alloc_skb(wmi->wmi_sc, len);
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (void *)skb->data;
+	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_TWT_DISABLE_CMD) |
+			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
+	cmd->pdev_id = pdev_id;
+
+	ret = ath11k_wmi_cmd_send(wmi, skb,
+				  WMI_TWT_DISABLE_CMDID);
+	if (ret) {
+		ath11k_warn(ab, "Failed to send WMI_TWT_DIeABLE_CMDID");
+		dev_kfree_skb(skb);
+	}
+	return ret;
+}
+
 static inline void ath11k_fill_band_to_mac_param(struct ath11k_base  *soc,
 				struct wmi_host_pdev_band_to_mac *band_to_mac)
 {
@@ -2877,6 +2961,9 @@ ath11k_wmi_copy_resource_config(struct wmi_resource_config *wmi_cfg,
 	wmi_cfg->use_pdev_id = tg_cfg->use_pdev_id;
 	wmi_cfg->flag1 = tg_cfg->atf_config;
 	wmi_cfg->peer_map_unmap_v2_support = tg_cfg->peer_map_unmap_v2_support;
+	wmi_cfg->sched_params = tg_cfg->sched_params;
+	wmi_cfg->twt_ap_pdev_count = tg_cfg->twt_ap_pdev_count;
+	wmi_cfg->twt_ap_sta_count = tg_cfg->twt_ap_sta_count;
 }
 
 static int ath11k_init_cmd_send(struct ath11k_pdev_wmi *wmi,
@@ -3068,6 +3155,8 @@ int ath11k_wmi_cmd_init(struct ath11k_base *sc)
 	config.beacon_tx_offload_max_vdev = sc->num_radios * TARGET_MAX_BCN_OFFLD;
 	config.rx_batchmode = TARGET_RX_BATCHMODE;
 	config.peer_map_unmap_v2_support = 1;
+	config.twt_ap_pdev_count = 2;
+	config.twt_ap_sta_count = 1000;
 
 	memcpy(&wmi_sc->wlan_resource_config, &config, sizeof(config));
 
@@ -5859,6 +5948,8 @@ static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb)
 	/* add Unsupported events here */
 	case WMI_TBTTOFFSET_EXT_UPDATE_EVENTID:
 	case WMI_VDEV_DELETE_RESP_EVENTID:
+	case WMI_TWT_ENABLE_EVENTID:
+	case WMI_TWT_DISABLE_EVENTID:
 		ath11k_dbg(ab, ATH11K_DBG_WMI,
 			   "ignoring unsupported event 0x%x\n", id);
 		break;
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 071537850c68..99f69fc3cf53 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -169,6 +169,10 @@ enum wmi_cmd_group {
 	WMI_GRP_MONITOR,        /* 0x39 */
 	WMI_GRP_REGULATORY,     /* 0x3a */
 	WMI_GRP_HW_DATA_FILTER, /* 0x3b */
+	WMI_GRP_WLM,            /* 0x3c */
+	WMI_GRP_11K_OFFLOAD,    /* 0x3d */
+	WMI_GRP_TWT,            /* 0x3e */
+
 };
 
 #define WMI_CMD_GRP(grp_id) (((grp_id) << 12) | 0x1)
@@ -531,6 +535,12 @@ enum wmi_tlv_cmd_id {
 	WMI_NDP_RESPONDER_REQ_CMDID,
 	WMI_NDP_END_REQ_CMDID,
 	WMI_HW_DATA_FILTER_CMDID = WMI_TLV_CMD(WMI_GRP_HW_DATA_FILTER),
+	WMI_TWT_ENABLE_CMDID = WMI_TLV_CMD(WMI_GRP_TWT),
+	WMI_TWT_DISABLE_CMDID,
+	WMI_TWT_ADD_DIALOG_CMDID,
+	WMI_TWT_DEL_DIALOG_CMDID,
+	WMI_TWT_PAUSE_DIALOG_CMDID,
+	WMI_TWT_RESUME_DIALOG_CMDID,
 };
 
 enum wmi_tlv_event_id {
@@ -713,6 +723,13 @@ enum wmi_tlv_event_id {
 	WMI_NDP_INDICATION_EVENTID,
 	WMI_NDP_CONFIRM_EVENTID,
 	WMI_NDP_END_INDICATION_EVENTID,
+
+	WMI_TWT_ENABLE_EVENTID = WMI_TLV_CMD(WMI_GRP_TWT),
+	WMI_TWT_DISABLE_EVENTID,
+	WMI_TWT_ADD_DIALOG_EVENTID,
+	WMI_TWT_DEL_DIALOG_EVENTID,
+	WMI_TWT_PAUSE_DIALOG_EVENTID,
+	WMI_TWT_RESUME_DIALOG_EVENTID,
 };
 
 enum wmi_tlv_pdev_param {
@@ -2736,6 +2753,9 @@ struct wmi_resource_config {
 	u32 max_num_dbs_scan_duty_cycle;
 	u32 max_num_group_keys;
 	u32 peer_map_unmap_v2_support;
+	u32 sched_params;
+	u32 twt_ap_pdev_count;
+	u32 twt_ap_sta_count;
 } __packed;
 
 struct wmi_service_ready_event {
@@ -3907,6 +3927,8 @@ struct peer_assoc_params {
 	u32 peer_he_mcs_count;
 	u32 peer_he_rx_mcs_set[WMI_HOST_MAX_HE_RATE_SET];
 	u32 peer_he_tx_mcs_set[WMI_HOST_MAX_HE_RATE_SET];
+	bool twt_responder;
+	bool twt_requester;
 	struct ath11k_ppe_threshold peer_ppet;
 };
 
@@ -4130,6 +4152,8 @@ struct wmi_pktlog_disable_cmd {
 #define WMI_PEER_DYN_MIMOPS	0x00020000
 #define WMI_PEER_STATIC_MIMOPS	0x00040000
 #define WMI_PEER_SPATIAL_MUX	0x00200000
+#define WMI_PEER_TWT_REQ	0x00400000
+#define WMI_PEER_TWT_RESP	0x00800000
 #define WMI_PEER_VHT		0x02000000
 #define WMI_PEER_80MHZ		0x04000000
 #define WMI_PEER_PMF		0x08000000
@@ -5005,6 +5029,48 @@ struct wmi_wmm_params_all_arg {
 	struct wmi_wmm_params_arg ac_vo;
 };
 
+#define ATH11K_TWT_DEF_STA_CONG_TIMER_MS		5000
+#define ATH11K_TWT_DEF_DEFAULT_SLOT_SIZE		10
+#define ATH11K_TWT_DEF_CONGESTION_THRESH_SETUP		50
+#define ATH11K_TWT_DEF_CONGESTION_THRESH_TEARDOWN	20
+#define ATH11K_TWT_DEF_CONGESTION_THRESH_CRITICAL	100
+#define ATH11K_TWT_DEF_INTERFERENCE_THRESH_TEARDOWN	80
+#define ATH11K_TWT_DEF_INTERFERENCE_THRESH_SETUP	50
+#define ATH11K_TWT_DEF_MIN_NO_STA_SETUP			10
+#define ATH11K_TWT_DEF_MIN_NO_STA_TEARDOWN		2
+#define ATH11K_TWT_DEF_NO_OF_BCAST_MCAST_SLOTS		2
+#define ATH11K_TWT_DEF_MIN_NO_TWT_SLOTS			2
+#define ATH11K_TWT_DEF_MAX_NO_STA_TWT			500
+#define ATH11K_TWT_DEF_MODE_CHECK_INTERVAL		10000
+#define ATH11K_TWT_DEF_ADD_STA_SLOT_INTERVAL		1000
+#define ATH11K_TWT_DEF_REMOVE_STA_SLOT_INTERVAL		5000
+
+struct wmi_twt_enable_params_cmd {
+	u32 tlv_header;
+	u32 pdev_id;
+	u32 sta_cong_timer_ms;
+	u32 mbss_support;
+	u32 default_slot_size;
+	u32 congestion_thresh_setup;
+	u32 congestion_thresh_teardown;
+	u32 congestion_thresh_critical;
+	u32 interference_thresh_teardown;
+	u32 interference_thresh_setup;
+	u32 min_no_sta_setup;
+	u32 min_no_sta_teardown;
+	u32 no_of_bcast_mcast_slots;
+	u32 min_no_twt_slots;
+	u32 max_no_sta_twt;
+	u32 mode_check_interval;
+	u32 add_sta_slot_interval;
+	u32 remove_sta_slot_interval;
+};
+
+struct wmi_twt_disable_params_cmd {
+	u32 tlv_header;
+	u32 pdev_id;
+};
+
 struct target_resource_config {
 	u32 num_vdevs;
 	u32 num_peers;
@@ -5065,6 +5131,9 @@ struct target_resource_config {
 	u32 max_bssid_rx_filters;
 	u32 use_pdev_id;
 	u32 peer_map_unmap_v2_support;
+	u32 sched_params;
+	u32 twt_ap_pdev_count;
+	u32 twt_ap_sta_count;
 };
 
 #define WMI_MAX_MEM_REQS 32
@@ -5190,4 +5259,6 @@ size_t ath11k_wmi_fw_stats_num_vdevs(struct list_head *head);
 void ath11k_wmi_fw_stats_fill(struct ath11k *ar,
 			      struct ath11k_fw_stats *fw_stats, u32 stats_id,
 			      char *buf);
+int ath11k_wmi_send_twt_enable_cmd(struct ath11k *ar, u32 pdev_id);
+int ath11k_wmi_send_twt_disable_cmd(struct ath11k *ar, u32 pdev_id);
 #endif
-- 
2.11.0

Re: [PATCH V2 3/3] ath11k: add TWT support

[Rajkumar Manoharan]

On 2019-04-26 02:41, John Crispin wrote:
> diff --git a/drivers/net/wireless/ath/ath11k/mac.c
> b/drivers/net/wireless/ath/ath11k/mac.c
> index 8bb4ff82fb6f..a38c101e0140 100644
> --- a/drivers/net/wireless/ath/ath11k/mac.c
> +++ b/drivers/net/wireless/ath/ath11k/mac.c
> @@ -1938,6 +1938,13 @@ static void ath11k_bss_info_changed(struct
> ieee80211_hw *hw,
>  		ath11k_mac_txpower_recalc(ar);
>  	}
> 
> +	if (changed & BSS_CHANGED_TWT) {
> +		if (info->twt_responder || info->twt_responder)
> 
typo? two twt_responder checks?

-Rajkumar