[PATCH V5 0/2] WMI and debugfs calls for TWT dialogs

[PATCH V5 0/2] WMI and debugfs calls for TWT dialogs

[Aloka Dixit]

This patchset adds support for TWT dialogs using debugfs.
Individual patch files show changes in V5.

John Crispin (2):
  ath11k: add WMI calls to manually add/del/pause/resume TWT dialogs
  ath11k: add debugfs for TWT debug calls

 drivers/net/wireless/ath/ath11k/core.h  |   4 +
 drivers/net/wireless/ath/ath11k/debug.c | 224 ++++++++++++++++++++++++
 drivers/net/wireless/ath/ath11k/debug.h |  13 ++
 drivers/net/wireless/ath/ath11k/mac.c   |   3 +
 drivers/net/wireless/ath/ath11k/wmi.c   | 218 ++++++++++++++++++++++-
 drivers/net/wireless/ath/ath11k/wmi.h   | 114 ++++++++++++
 6 files changed, 572 insertions(+), 4 deletions(-)


base-commit: f5242d42da02730c67d517a7402015c13f59deee
-- 
2.25.0

[PATCH V5 1/2] ath11k: add WMI calls to manually add/del/pause/resume TWT dialogs

[Aloka Dixit]

From: John Crispin <john@phrozen.org>

These calls are used for debugging and will be required for WFA
certification tests.

Signed-off-by: John Crispin <john@phrozen.org>
Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
---
Changes in V5
* Setting and resetting of twt_enabled in WMI functions
* ath11k_dbg() instead of ath11k_info() in ath11k_wmi_twt_add_dialog_event()
* Made WMI error messages more readable
---
 drivers/net/wireless/ath/ath11k/core.h |   1 +
 drivers/net/wireless/ath/ath11k/wmi.c  | 218 ++++++++++++++++++++++++-
 drivers/net/wireless/ath/ath11k/wmi.h  | 114 +++++++++++++
 3 files changed, 329 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 9cdc4f0b0690..a7d5333485aa 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -564,6 +564,7 @@ struct ath11k {
 #endif
 	bool dfs_block_radar_events;
 	struct ath11k_thermal thermal;
+	u8 twt_enabled;
 };
 
 struct ath11k_band_cap {
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index cccfd3bd4d27..1cac37d9c701 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -2897,11 +2897,12 @@ ath11k_wmi_send_twt_enable_cmd(struct ath11k *ar, u32 pdev_id)
 	/* TODO add MBSSID support */
 	cmd->mbss_support = 0;
 
-	ret = ath11k_wmi_cmd_send(wmi, skb,
-				  WMI_TWT_ENABLE_CMDID);
+	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);
+	} else {
+		ar->twt_enabled = 1;
 	}
 	return ret;
 }
@@ -2926,11 +2927,180 @@ ath11k_wmi_send_twt_disable_cmd(struct ath11k *ar, u32 pdev_id)
 			  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);
+	ret = ath11k_wmi_cmd_send(wmi, skb, WMI_TWT_DISABLE_CMDID);
 	if (ret) {
 		ath11k_warn(ab, "Failed to send WMI_TWT_DISABLE_CMDID");
 		dev_kfree_skb(skb);
+	} else {
+		ar->twt_enabled = 0;
+	}
+	return ret;
+}
+
+int ath11k_wmi_send_twt_add_dialog_cmd(struct ath11k *ar,
+				       struct wmi_twt_add_dialog_params *params)
+{
+	struct ath11k_pdev_wmi *wmi = ar->wmi;
+	struct ath11k_base *ab = wmi->wmi_ab->ab;
+	struct wmi_twt_add_dialog_params_cmd *cmd;
+	struct sk_buff *skb;
+	int ret, len;
+
+	len = sizeof(*cmd);
+
+	skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, len);
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (struct wmi_twt_add_dialog_params_cmd *)skb->data;
+	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_TWT_ADD_DIALOG_CMD) |
+			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
+
+	cmd->vdev_id = params->vdev_id;
+	ether_addr_copy(cmd->peer_macaddr.addr, params->peer_macaddr);
+	cmd->dialog_id = params->dialog_id;
+	cmd->wake_intvl_us = params->wake_intvl_us;
+	cmd->wake_intvl_mantis = params->wake_intvl_mantis;
+	cmd->wake_dura_us = params->wake_dura_us;
+	cmd->sp_offset_us = params->sp_offset_us;
+	cmd->flags = params->twt_cmd;
+	if (params->flag_bcast)
+		cmd->flags |= WMI_TWT_ADD_DIALOG_FLAG_BCAST;
+	if (params->flag_trigger)
+		cmd->flags |= WMI_TWT_ADD_DIALOG_FLAG_TRIGGER;
+	if (params->flag_flow_type)
+		cmd->flags |= WMI_TWT_ADD_DIALOG_FLAG_FLOW_TYPE;
+	if (params->flag_protection)
+		cmd->flags |= WMI_TWT_ADD_DIALOG_FLAG_PROTECTION;
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
+		   "WMI add TWT dialog, vdev %u, dialog id %u,\n"
+		   "wake interval %u, mantissa %u, wake duration %u,\n"
+		   "service period offset %u, flags 0x%x\n",
+		   cmd->vdev_id, cmd->dialog_id, cmd->wake_intvl_us,
+		   cmd->wake_intvl_mantis, cmd->wake_dura_us, cmd->sp_offset_us,
+		   cmd->flags);
+
+	ret = ath11k_wmi_cmd_send(wmi, skb, WMI_TWT_ADD_DIALOG_CMDID);
+
+	if (ret) {
+		ath11k_warn(ab,
+			    "Failed to send WMI command to add TWT dialog\n");
+		dev_kfree_skb(skb);
+	}
+	return ret;
+}
+
+int ath11k_wmi_send_twt_del_dialog_cmd(struct ath11k *ar,
+				       struct wmi_twt_del_dialog_params *params)
+{
+	struct ath11k_pdev_wmi *wmi = ar->wmi;
+	struct ath11k_base *ab = wmi->wmi_ab->ab;
+	struct wmi_twt_del_dialog_params_cmd *cmd;
+	struct sk_buff *skb;
+	int ret, len;
+
+	len = sizeof(*cmd);
+
+	skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, len);
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (struct wmi_twt_del_dialog_params_cmd *)skb->data;
+	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_TWT_DEL_DIALOG_CMD) |
+			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
+
+	cmd->vdev_id = params->vdev_id;
+	ether_addr_copy(cmd->peer_macaddr.addr, params->peer_macaddr);
+	cmd->dialog_id = params->dialog_id;
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
+		   "WMI delete TWT dialog, vdev %u, dialog id %u\n",
+		   cmd->vdev_id, cmd->dialog_id);
+
+	ret = ath11k_wmi_cmd_send(wmi, skb, WMI_TWT_DEL_DIALOG_CMDID);
+	if (ret) {
+		ath11k_warn(ab,
+			    "Failed to send WMI command to delete TWT dialog\n");
+		dev_kfree_skb(skb);
+	}
+	return ret;
+}
+
+int ath11k_wmi_send_twt_pause_dialog_cmd(struct ath11k *ar,
+					 struct wmi_twt_pause_dialog_params *params)
+{
+	struct ath11k_pdev_wmi *wmi = ar->wmi;
+	struct ath11k_base *ab = wmi->wmi_ab->ab;
+	struct wmi_twt_pause_dialog_params_cmd *cmd;
+	struct sk_buff *skb;
+	int ret, len;
+
+	len = sizeof(*cmd);
+
+	skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, len);
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (struct wmi_twt_pause_dialog_params_cmd *)skb->data;
+	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG,
+				     WMI_TAG_TWT_PAUSE_DIALOG_CMD) |
+			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
+
+	cmd->vdev_id = params->vdev_id;
+	ether_addr_copy(cmd->peer_macaddr.addr, params->peer_macaddr);
+	cmd->dialog_id = params->dialog_id;
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
+		   "WMI pause TWT dialog, vdev %u, dialog id %u\n",
+		   cmd->vdev_id, cmd->dialog_id);
+
+	ret = ath11k_wmi_cmd_send(wmi, skb, WMI_TWT_PAUSE_DIALOG_CMDID);
+	if (ret) {
+		ath11k_warn(ab,
+			    "Failed to send WMI command to pause TWT dialog\n");
+		dev_kfree_skb(skb);
+	}
+	return ret;
+}
+
+int ath11k_wmi_send_twt_resume_dialog_cmd(struct ath11k *ar,
+					  struct wmi_twt_resume_dialog_params *params)
+{
+	struct ath11k_pdev_wmi *wmi = ar->wmi;
+	struct ath11k_base *ab = wmi->wmi_ab->ab;
+	struct wmi_twt_resume_dialog_params_cmd *cmd;
+	struct sk_buff *skb;
+	int ret, len;
+
+	len = sizeof(*cmd);
+
+	skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, len);
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (struct wmi_twt_resume_dialog_params_cmd *)skb->data;
+	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG,
+				     WMI_TAG_TWT_RESUME_DIALOG_CMD) |
+			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
+
+	cmd->vdev_id = params->vdev_id;
+	ether_addr_copy(cmd->peer_macaddr.addr, params->peer_macaddr);
+	cmd->dialog_id = params->dialog_id;
+	cmd->sp_offset_us = params->sp_offset_us;
+	cmd->next_twt_size = params->next_twt_size;
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
+		   "WMI resume TWT dialog, vdev %u, dialog id %u,\n"
+		   "service period offset %u, next TWT subfield size %u\n",
+		   cmd->vdev_id, cmd->dialog_id, cmd->sp_offset_us,
+		   cmd->next_twt_size);
+
+	ret = ath11k_wmi_cmd_send(wmi, skb, WMI_TWT_RESUME_DIALOG_CMDID);
+	if (ret) {
+		ath11k_warn(ab,
+			    "Failed to send WMI command to resume TWT dialog\n");
+		dev_kfree_skb(skb);
 	}
 	return ret;
 }
@@ -6983,6 +7153,40 @@ static void ath11k_wmi_event_wow_wakeup_host(struct ath11k_base *ab, struct sk_b
 	complete(&ab->wow.wakeup_completed);
 }
 
+static void ath11k_wmi_twt_add_dialog_event(struct ath11k_base *ab,
+					    struct sk_buff *skb)
+{
+	const char *status[] = {
+		"OK", "TWT_NOT_ENABLED", "USED_DIALOG_ID", "INVALID_PARAM",
+		"NOT_READY", "NO_RESOURCE", "NO_ACK", "NO_RESPONSE",
+		"DENIED", "UNKNOWN_ERROR"
+	};
+	const void **tb;
+	const struct wmi_twt_add_dialog_event *ev;
+	int ret;
+
+	tb = ath11k_wmi_tlv_parse_alloc(ab, skb->data, skb->len, GFP_ATOMIC);
+	if (IS_ERR(tb)) {
+		ret = PTR_ERR(tb);
+		ath11k_warn(ab,
+			    "failed to parse TWT add dialog status event tlv: %d\n", ret);
+		return;
+	}
+
+	ev = tb[WMI_TAG_TWT_ADD_DIALOG_COMPLETE_EVENT];
+	if (!ev) {
+		ath11k_warn(ab, "failed to fetch TWT add dialog event\n");
+		goto exit;
+	}
+
+	ath11k_dbg(ab, ATH11K_DBG_WMI,
+		   "TWT Add Dialog Event - vdev: %d, dialog id: %d, status: %s\n",
+		   ev->vdev_id, ev->dialog_id, status[ev->status]);
+
+exit:
+	kfree(tb);
+}
+
 static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb)
 {
 	struct wmi_cmd_hdr *cmd_hdr;
@@ -7075,11 +7279,17 @@ static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb)
 	case WMI_OFFLOAD_PROB_RESP_TX_STATUS_EVENTID:
 		ath11k_probe_resp_tx_status_event(ab, skb);
 		break;
+	case WMI_TWT_ADD_DIALOG_EVENTID:
+		ath11k_wmi_twt_add_dialog_event(ab, skb);
+		break;
 	/* add Unsupported events here */
 	case WMI_TBTTOFFSET_EXT_UPDATE_EVENTID:
 	case WMI_PEER_OPER_MODE_CHANGE_EVENTID:
 	case WMI_TWT_ENABLE_EVENTID:
 	case WMI_TWT_DISABLE_EVENTID:
+	case WMI_TWT_DEL_DIALOG_EVENTID:
+	case WMI_TWT_PAUSE_DIALOG_EVENTID:
+	case WMI_TWT_RESUME_DIALOG_EVENTID:
 	case WMI_PDEV_DMA_RING_CFG_RSP_EVENTID:
 		ath11k_dbg(ab, ATH11K_DBG_WMI,
 			   "ignoring unsupported event 0x%x\n", id);
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 3ade1ddd35c9..eb573dad67c5 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -4791,6 +4791,112 @@ struct wmi_twt_disable_params_cmd {
 	u32 pdev_id;
 } __packed;
 
+enum WMI_HOST_TWT_COMMAND {
+	WMI_HOST_TWT_COMMAND_REQUEST_TWT = 0,
+	WMI_HOST_TWT_COMMAND_SUGGEST_TWT,
+	WMI_HOST_TWT_COMMAND_DEMAND_TWT,
+	WMI_HOST_TWT_COMMAND_TWT_GROUPING,
+	WMI_HOST_TWT_COMMAND_ACCEPT_TWT,
+	WMI_HOST_TWT_COMMAND_ALTERNATE_TWT,
+	WMI_HOST_TWT_COMMAND_DICTATE_TWT,
+	WMI_HOST_TWT_COMMAND_REJECT_TWT,
+};
+
+#define WMI_TWT_ADD_DIALOG_FLAG_BCAST           BIT(8)
+#define WMI_TWT_ADD_DIALOG_FLAG_TRIGGER         BIT(9)
+#define WMI_TWT_ADD_DIALOG_FLAG_FLOW_TYPE       BIT(10)
+#define WMI_TWT_ADD_DIALOG_FLAG_PROTECTION      BIT(11)
+
+struct wmi_twt_add_dialog_params_cmd {
+	u32 tlv_header;
+	u32 vdev_id;
+	struct wmi_mac_addr peer_macaddr;
+	u32 dialog_id;
+	u32 wake_intvl_us;
+	u32 wake_intvl_mantis;
+	u32 wake_dura_us;
+	u32 sp_offset_us;
+	u32 flags;
+} __packed;
+
+struct wmi_twt_add_dialog_params {
+	u32 vdev_id;
+	u8 peer_macaddr[ETH_ALEN];
+	u32 dialog_id;
+	u32 wake_intvl_us;
+	u32 wake_intvl_mantis;
+	u32 wake_dura_us;
+	u32 sp_offset_us;
+	u8 twt_cmd;
+	u8 flag_bcast;
+	u8 flag_trigger;
+	u8 flag_flow_type;
+	u8 flag_protection;
+} __packed;
+
+enum  wmi_twt_add_dialog_status {
+	WMI_ADD_TWT_STATUS_OK,
+	WMI_ADD_TWT_STATUS_TWT_NOT_ENABLED,
+	WMI_ADD_TWT_STATUS_USED_DIALOG_ID,
+	WMI_ADD_TWT_STATUS_INVALID_PARAM,
+	WMI_ADD_TWT_STATUS_NOT_READY,
+	WMI_ADD_TWT_STATUS_NO_RESOURCE,
+	WMI_ADD_TWT_STATUS_NO_ACK,
+	WMI_ADD_TWT_STATUS_NO_RESPONSE,
+	WMI_ADD_TWT_STATUS_DENIED,
+	WMI_ADD_TWT_STATUS_UNKNOWN_ERROR,
+};
+
+struct wmi_twt_add_dialog_event {
+	u32 vdev_id;
+	struct wmi_mac_addr peer_macaddr;
+	u32 dialog_id;
+	u32 status;
+} __packed;
+
+struct wmi_twt_del_dialog_params {
+	u32 vdev_id;
+	u8 peer_macaddr[ETH_ALEN];
+	u32 dialog_id;
+} __packed;
+
+struct wmi_twt_del_dialog_params_cmd {
+	u32 tlv_header;
+	u32 vdev_id;
+	struct wmi_mac_addr peer_macaddr;
+	u32 dialog_id;
+} __packed;
+
+struct wmi_twt_pause_dialog_params {
+	u32 vdev_id;
+	u8 peer_macaddr[ETH_ALEN];
+	u32 dialog_id;
+} __packed;
+
+struct wmi_twt_pause_dialog_params_cmd {
+	u32 tlv_header;
+	u32 vdev_id;
+	struct wmi_mac_addr peer_macaddr;
+	u32 dialog_id;
+} __packed;
+
+struct wmi_twt_resume_dialog_params {
+	u32 vdev_id;
+	u8 peer_macaddr[ETH_ALEN];
+	u32 dialog_id;
+	u32 sp_offset_us;
+	u32 next_twt_size;
+} __packed;
+
+struct wmi_twt_resume_dialog_params_cmd {
+	u32 tlv_header;
+	u32 vdev_id;
+	struct wmi_mac_addr peer_macaddr;
+	u32 dialog_id;
+	u32 sp_offset_us;
+	u32 next_twt_size;
+} __packed;
+
 struct wmi_obss_spatial_reuse_params_cmd {
 	u32 tlv_header;
 	u32 pdev_id;
@@ -5339,6 +5445,14 @@ void ath11k_wmi_fw_stats_fill(struct ath11k *ar,
 int ath11k_wmi_simulate_radar(struct ath11k *ar);
 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);
+int ath11k_wmi_send_twt_add_dialog_cmd(struct ath11k *ar,
+				       struct wmi_twt_add_dialog_params *params);
+int ath11k_wmi_send_twt_del_dialog_cmd(struct ath11k *ar,
+				       struct wmi_twt_del_dialog_params *params);
+int ath11k_wmi_send_twt_pause_dialog_cmd(struct ath11k *ar,
+					 struct wmi_twt_pause_dialog_params *params);
+int ath11k_wmi_send_twt_resume_dialog_cmd(struct ath11k *ar,
+					  struct wmi_twt_resume_dialog_params *params);
 int ath11k_wmi_send_obss_spr_cmd(struct ath11k *ar, u32 vdev_id,
 				 struct ieee80211_he_obss_pd *he_obss_pd);
 int ath11k_wmi_pdev_set_srg_bss_color_bitmap(struct ath11k *ar, u32 *bitmap);
-- 
2.25.0

Re: [PATCH V5 1/2] ath11k: add WMI calls to manually add/del/pause/resume TWT dialogs

[Kalle Valo]

Aloka Dixit <alokad@codeaurora.org> wrote:

> These calls are used for debugging and will be required for WFA
> certification tests.
> 
> Signed-off-by: John Crispin <john@phrozen.org>
> Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
> Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

This patchset had new warnings:

drivers/net/wireless/ath/ath11k/debugfs.c:16:15: warning: symbol 'debugfs_ath11k' was not declared. Should it be static?
drivers/net/wireless/ath/ath11k/wmi.c:7143: char * array declaration might be better as static const

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210222192651.1782-2-alokad@codeaurora.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

Re: [PATCH V5 1/2] ath11k: add WMI calls to manually add/del/pause/resume TWT dialogs

[Kalle Valo]

Aloka Dixit <alokad@codeaurora.org> writes:

> From: John Crispin <john@phrozen.org>
>
> These calls are used for debugging and will be required for WFA
> certification tests.
>
> Signed-off-by: John Crispin <john@phrozen.org>
> Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
> Signed-off-by: Aloka Dixit <alokad@codeaurora.org>

[...]

> +int ath11k_wmi_send_twt_add_dialog_cmd(struct ath11k *ar,
> +				       struct wmi_twt_add_dialog_params *params)
> +{
> +	struct ath11k_pdev_wmi *wmi = ar->wmi;
> +	struct ath11k_base *ab = wmi->wmi_ab->ab;
> +	struct wmi_twt_add_dialog_params_cmd *cmd;
> +	struct sk_buff *skb;
> +	int ret, len;
> +
> +	len = sizeof(*cmd);
> +
> +	skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, len);
> +	if (!skb)
> +		return -ENOMEM;
> +
> +	cmd = (struct wmi_twt_add_dialog_params_cmd *)skb->data;
> +	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_TWT_ADD_DIALOG_CMD) |
> +			  FIELD_PREP(WMI_TLV_LEN, len - TLV_HDR_SIZE);
> +
> +	cmd->vdev_id = params->vdev_id;
> +	ether_addr_copy(cmd->peer_macaddr.addr, params->peer_macaddr);
> +	cmd->dialog_id = params->dialog_id;
> +	cmd->wake_intvl_us = params->wake_intvl_us;
> +	cmd->wake_intvl_mantis = params->wake_intvl_mantis;
> +	cmd->wake_dura_us = params->wake_dura_us;
> +	cmd->sp_offset_us = params->sp_offset_us;
> +	cmd->flags = params->twt_cmd;
> +	if (params->flag_bcast)
> +		cmd->flags |= WMI_TWT_ADD_DIALOG_FLAG_BCAST;
> +	if (params->flag_trigger)
> +		cmd->flags |= WMI_TWT_ADD_DIALOG_FLAG_TRIGGER;
> +	if (params->flag_flow_type)
> +		cmd->flags |= WMI_TWT_ADD_DIALOG_FLAG_FLOW_TYPE;
> +	if (params->flag_protection)
> +		cmd->flags |= WMI_TWT_ADD_DIALOG_FLAG_PROTECTION;
> +
> +	ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
> +		   "WMI add TWT dialog, vdev %u, dialog id %u,\n"
> +		   "wake interval %u, mantissa %u, wake duration %u,\n"
> +		   "service period offset %u, flags 0x%x\n",

In debug messages please use all lower case, and no commas nor \n (ie.
all in one line).

> +	ret = ath11k_wmi_cmd_send(wmi, skb, WMI_TWT_ADD_DIALOG_CMDID);
> +
> +	if (ret) {
> +		ath11k_warn(ab,
> +			    "Failed to send WMI command to add TWT dialog\n");

Warning and error messages should follow style:

"failed to send add TWT dialog WMI command: %d", ret

> +static void ath11k_wmi_twt_add_dialog_event(struct ath11k_base *ab,
> +					    struct sk_buff *skb)
> +{
> +	const char *status[] = {
> +		"OK", "TWT_NOT_ENABLED", "USED_DIALOG_ID", "INVALID_PARAM",
> +		"NOT_READY", "NO_RESOURCE", "NO_ACK", "NO_RESPONSE",
> +		"DENIED", "UNKNOWN_ERROR"
> +	};
> +	const void **tb;
> +	const struct wmi_twt_add_dialog_event *ev;
> +	int ret;
> +
> +	tb = ath11k_wmi_tlv_parse_alloc(ab, skb->data, skb->len, GFP_ATOMIC);
> +	if (IS_ERR(tb)) {
> +		ret = PTR_ERR(tb);
> +		ath11k_warn(ab,
> +			    "failed to parse TWT add dialog status event tlv: %d\n", ret);
> +		return;
> +	}
> +
> +	ev = tb[WMI_TAG_TWT_ADD_DIALOG_COMPLETE_EVENT];
> +	if (!ev) {
> +		ath11k_warn(ab, "failed to fetch TWT add dialog event\n");
> +		goto exit;
> +	}
> +
> +	ath11k_dbg(ab, ATH11K_DBG_WMI,
> +		   "TWT Add Dialog Event - vdev: %d, dialog id: %d, status: %s\n",
> +		   ev->vdev_id, ev->dialog_id, status[ev->status]);

You are not checking that status array is not used out of bounds. I
would just remove the string conversion to keep things simple, but if
you want to print in strings please add a helper function to do the
conversion and add status values as enum to wmi.h.

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

Re: [PATCH V5 1/2] ath11k: add WMI calls to manually add/del/pause/resume TWT dialogs

[Aloka Dixit]

On 2021-03-09 02:50, Kalle Valo wrote:
> Aloka Dixit <alokad@codeaurora.org> wrote:
> 
>> These calls are used for debugging and will be required for WFA
>> certification tests.
>> 
>> Signed-off-by: John Crispin <john@phrozen.org>
>> Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
>> Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
>> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
> 
> This patchset had new warnings:
> 
> drivers/net/wireless/ath/ath11k/debugfs.c:16:15: warning: symbol
> 'debugfs_ath11k' was not declared. Should it be static?

This patch-set doesn't add any reference to 'debugfs_ath11k', so
don't know why this warning came up.

> drivers/net/wireless/ath/ath11k/wmi.c:7143: char * array declaration
> might be better as static const
Will remove this array as per your other comment regarding
adding a helper function.

Re: [PATCH V5 1/2] ath11k: add WMI calls to manually add/del/pause/resume TWT dialogs

[Kalle Valo]

Aloka Dixit <alokad@codeaurora.org> writes:

> On 2021-03-09 02:50, Kalle Valo wrote:
>> Aloka Dixit <alokad@codeaurora.org> wrote:
>>
>>> These calls are used for debugging and will be required for WFA
>>> certification tests.
>>>
>>> Signed-off-by: John Crispin <john@phrozen.org>
>>> Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
>>> Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
>>> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
>>
>> This patchset had new warnings:
>>
>> drivers/net/wireless/ath/ath11k/debugfs.c:16:15: warning: symbol
>> 'debugfs_ath11k' was not declared. Should it be static?
>
> This patch-set doesn't add any reference to 'debugfs_ath11k', so
> don't know why this warning came up.

Ah, sorry. That's coming from Anil's debugfs patch.

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

[PATCH V5 2/2] ath11k: add debugfs for TWT debug calls

[Aloka Dixit]

From: John Crispin <john@phrozen.org>

New debugfs files to manually add/delete/pause/resume TWT
dialogs for test/debug purposes.

The debugfs files expect the following parameters
(1) Add dialog
echo '<Peer_MAC> <Dialog_ID> <Wake_Interval_Usec> <Wake_Interval_Mantis>
<Wake_Duration_Usec> <First_SP_Offset> <TWT_Command> <1:Broadcast /
0:Individual> <1:Triggered / 0:Untriggered> <1:Unannounced /
0:Announced> <1:Protected / 0:Unprotected>' >
/sys/kernel/debug/ieee80211/phyX/netdev:wlanX/twt/add_dialog

Example (Non-triggered and un-announced):
echo '00:03:7F:20:13:52 1 102400 100 30720 20480 4 0 0 1 0' >
/sys/kernel/debug/ieee80211/phy0/netdev:wlan0/twt/add_dialog

(2) Delete dialog
echo '<Peer_MAC> <Dialog_ID>' >
/sys/kernel/debug/ieee80211/phyX/netdev:wlanX/twt/del_dialog

(3) Pause dialog
echo '<Peer_MAC> <Dialog_ID>' >
/sys/kernel/debug/ieee80211/phyX/netdev:wlanX/twt/pause_dialog

(4) Resume dialog
echo '<Peer_MAC> <Dialog_ID> <SP_Offset_Usec> <Next_TWT_Size>' >
/sys/kernel/debug/ieee80211/phyX/netdev:wlanX/twt/resume_dialog

Example:
echo '00:03:7F:20:13:52 1 2000000 3' >
/sys/kernel/debug/ieee80211/phy0/netdev:wlan0/twt/resume_dialog

Signed-off-by: John Crispin <john@phrozen.org>
Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
---
Changes in V5
* TWT directory created during ath11k_mac_op_add_interface() instead
* of during TWT enable command.
* File write operation check for twt_enabled.
* Used CONFIG_ATH11K_DEBUGFS instead of CONFIG_MAC80211_DEBUGFS.
* Example commands in commit description.
---
 drivers/net/wireless/ath/ath11k/core.h  |   3 +
 drivers/net/wireless/ath/ath11k/debug.c | 224 ++++++++++++++++++++++++
 drivers/net/wireless/ath/ath11k/debug.h |  13 ++
 drivers/net/wireless/ath/ath11k/mac.c   |   3 +
 4 files changed, 243 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index a7d5333485aa..944a9f88ed17 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -241,6 +241,9 @@ struct ath11k_vif {
 	bool rsnie_present;
 	bool wpaie_present;
 	struct ieee80211_chanctx_conf chanctx;
+#ifdef CONFIG_ATH11K_DEBUGFS
+	struct dentry *debugfs_twt;
+#endif /* CONFIG_ATH11K_DEBUGFS */
 };
 
 struct ath11k_vif_iter {
diff --git a/drivers/net/wireless/ath/ath11k/debug.c b/drivers/net/wireless/ath/ath11k/debug.c
index c86de95fbdc5..781b472ae987 100644
--- a/drivers/net/wireless/ath/ath11k/debug.c
+++ b/drivers/net/wireless/ath/ath11k/debug.c
@@ -104,3 +104,227 @@ void ath11k_dbg_dump(struct ath11k_base *ab,
 EXPORT_SYMBOL(ath11k_dbg_dump);
 
 #endif /* CONFIG_ATH11K_DEBUG */
+
+#ifdef CONFIG_ATH11K_DEBUGFS
+static ssize_t ath11k_write_twt_add_dialog(struct file *file,
+					   const char __user *ubuf,
+					   size_t count, loff_t *ppos)
+{
+	struct ath11k_vif *arvif = file->private_data;
+	struct wmi_twt_add_dialog_params params = { 0 };
+	u8 buf[128] = {0};
+	int ret;
+
+	if (arvif->ar->twt_enabled == 0) {
+		ath11k_err(arvif->ar->ab, "TWT support is not enabled\n");
+		return -EOPNOTSUPP;
+	}
+
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
+	if (ret < 0)
+		return ret;
+
+	buf[ret] = '\0';
+	ret = sscanf(buf,
+		     "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx %u %u %u %u %u %hhu %hhu %hhu %hhu %hhu",
+		     &params.peer_macaddr[0],
+		     &params.peer_macaddr[1],
+		     &params.peer_macaddr[2],
+		     &params.peer_macaddr[3],
+		     &params.peer_macaddr[4],
+		     &params.peer_macaddr[5],
+		     &params.dialog_id,
+		     &params.wake_intvl_us,
+		     &params.wake_intvl_mantis,
+		     &params.wake_dura_us,
+		     &params.sp_offset_us,
+		     &params.twt_cmd,
+		     &params.flag_bcast,
+		     &params.flag_trigger,
+		     &params.flag_flow_type,
+		     &params.flag_protection);
+	if (ret != 16)
+		return -EINVAL;
+
+	params.vdev_id = arvif->vdev_id;
+
+	ret = ath11k_wmi_send_twt_add_dialog_cmd(arvif->ar, &params);
+	if (ret)
+		return ret;
+
+	return count;
+}
+
+static ssize_t ath11k_write_twt_del_dialog(struct file *file,
+					   const char __user *ubuf,
+					   size_t count, loff_t *ppos)
+{
+	struct ath11k_vif *arvif = file->private_data;
+	struct wmi_twt_del_dialog_params params = { 0 };
+	u8 buf[64] = {0};
+	int ret;
+
+	if (arvif->ar->twt_enabled == 0) {
+		ath11k_err(arvif->ar->ab, "TWT support is not enabled\n");
+		return -EOPNOTSUPP;
+	}
+
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
+	if (ret < 0)
+		return ret;
+
+	buf[ret] = '\0';
+	ret = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx %u",
+		     &params.peer_macaddr[0],
+		     &params.peer_macaddr[1],
+		     &params.peer_macaddr[2],
+		     &params.peer_macaddr[3],
+		     &params.peer_macaddr[4],
+		     &params.peer_macaddr[5],
+		     &params.dialog_id);
+	if (ret != 7)
+		return -EINVAL;
+
+	params.vdev_id = arvif->vdev_id;
+
+	ret = ath11k_wmi_send_twt_del_dialog_cmd(arvif->ar, &params);
+	if (ret)
+		return ret;
+
+	return count;
+}
+
+static ssize_t ath11k_write_twt_pause_dialog(struct file *file,
+					     const char __user *ubuf,
+					     size_t count, loff_t *ppos)
+{
+	struct ath11k_vif *arvif = file->private_data;
+	struct wmi_twt_pause_dialog_params params = { 0 };
+	u8 buf[64] = {0};
+	int ret;
+
+	if (arvif->ar->twt_enabled == 0) {
+		ath11k_err(arvif->ar->ab, "TWT support is not enabled\n");
+		return -EOPNOTSUPP;
+	}
+
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
+	if (ret < 0)
+		return ret;
+
+	buf[ret] = '\0';
+	ret = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx %u",
+		     &params.peer_macaddr[0],
+		     &params.peer_macaddr[1],
+		     &params.peer_macaddr[2],
+		     &params.peer_macaddr[3],
+		     &params.peer_macaddr[4],
+		     &params.peer_macaddr[5],
+		     &params.dialog_id);
+	if (ret != 7)
+		return -EINVAL;
+
+	params.vdev_id = arvif->vdev_id;
+
+	ret = ath11k_wmi_send_twt_pause_dialog_cmd(arvif->ar, &params);
+	if (ret)
+		return ret;
+
+	return count;
+}
+
+static ssize_t ath11k_write_twt_resume_dialog(struct file *file,
+					      const char __user *ubuf,
+					      size_t count, loff_t *ppos)
+{
+	struct ath11k_vif *arvif = file->private_data;
+	struct wmi_twt_resume_dialog_params params = { 0 };
+	u8 buf[64] = {0};
+	int ret;
+
+	if (arvif->ar->twt_enabled == 0) {
+		ath11k_err(arvif->ar->ab, "TWT support is not enabled\n");
+		return -EOPNOTSUPP;
+	}
+
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
+	if (ret < 0)
+		return ret;
+
+	buf[ret] = '\0';
+	ret = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx %u %u %u",
+		     &params.peer_macaddr[0],
+		     &params.peer_macaddr[1],
+		     &params.peer_macaddr[2],
+		     &params.peer_macaddr[3],
+		     &params.peer_macaddr[4],
+		     &params.peer_macaddr[5],
+		     &params.dialog_id,
+		     &params.sp_offset_us,
+		     &params.next_twt_size);
+	if (ret != 9)
+		return -EINVAL;
+
+	params.vdev_id = arvif->vdev_id;
+
+	ret = ath11k_wmi_send_twt_resume_dialog_cmd(arvif->ar, &params);
+	if (ret)
+		return ret;
+
+	return count;
+}
+
+static const struct file_operations ath11k_fops_twt_add_dialog = {
+	.write = ath11k_write_twt_add_dialog,
+	.open = simple_open
+};
+
+static const struct file_operations ath11k_fops_twt_del_dialog = {
+	.write = ath11k_write_twt_del_dialog,
+	.open = simple_open
+};
+
+static const struct file_operations ath11k_fops_twt_pause_dialog = {
+	.write = ath11k_write_twt_pause_dialog,
+	.open = simple_open
+};
+
+static const struct file_operations ath11k_fops_twt_resume_dialog = {
+	.write = ath11k_write_twt_resume_dialog,
+	.open = simple_open
+};
+
+void ath11k_debugfs_add_interface(struct ath11k_vif *arvif)
+{
+	if (arvif->vif->type == NL80211_IFTYPE_AP && !arvif->debugfs_twt) {
+		arvif->debugfs_twt = debugfs_create_dir("twt",
+							arvif->vif->debugfs_dir);
+		if (IS_ERR_OR_NULL(arvif->debugfs_twt)) {
+			ath11k_warn(arvif->ar->ab,
+				    "failed to create twt debugfs: %p\n",
+				    arvif->debugfs_twt);
+			arvif->debugfs_twt = NULL;
+			return;
+		}
+
+		debugfs_create_file("add_dialog", 0200, arvif->debugfs_twt,
+				    arvif, &ath11k_fops_twt_add_dialog);
+
+		debugfs_create_file("del_dialog", 0200, arvif->debugfs_twt,
+				    arvif, &ath11k_fops_twt_del_dialog);
+
+		debugfs_create_file("pause_dialog", 0200, arvif->debugfs_twt,
+				    arvif, &ath11k_fops_twt_pause_dialog);
+
+		debugfs_create_file("resume_dialog", 0200, arvif->debugfs_twt,
+				    arvif, &ath11k_fops_twt_resume_dialog);
+	}
+}
+
+void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif)
+{
+	debugfs_remove_recursive(arvif->debugfs_twt);
+	arvif->debugfs_twt = NULL;
+}
+
+#endif /* CONFIG_ATH11K_DEBUGFS */
diff --git a/drivers/net/wireless/ath/ath11k/debug.h b/drivers/net/wireless/ath/ath11k/debug.h
index 659a275e2eb3..2b41cefb68b5 100644
--- a/drivers/net/wireless/ath/ath11k/debug.h
+++ b/drivers/net/wireless/ath/ath11k/debug.h
@@ -64,4 +64,17 @@ do {								\
 		__ath11k_dbg(ar, dbg_mask, fmt, ##__VA_ARGS__);	\
 } while (0)
 
+#ifdef CONFIG_ATH11K_DEBUGFS
+void ath11k_debugfs_add_interface(struct ath11k_vif *arvif);
+void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif);
+#else /* CONFIG_ATH11K_DEBUGFS */
+static inline void ath11k_debugfs_add_interface(struct ath11k_vif *arvif)
+{
+}
+
+static inline void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif)
+{
+}
+#endif /* CONFIG_ATH11K_DEBUGFS */
+
 #endif /* _ATH11K_DEBUG_H_ */
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index 335d49af7dd5..aa0f2b65d10c 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -4766,6 +4766,7 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,
 	}
 
 	ath11k_dp_vdev_tx_attach(ar, arvif);
+	ath11k_debugfs_add_interface(arvif);
 
 	mutex_unlock(&ar->conf_mutex);
 
@@ -4885,6 +4886,8 @@ static void ath11k_mac_op_remove_interface(struct ieee80211_hw *hw,
 
 	/* TODO: recal traffic pause state based on the available vdevs */
 
+	ath11k_debugfs_remove_interface(arvif);
+
 	mutex_unlock(&ar->conf_mutex);
 }
 
-- 
2.25.0

Re: [PATCH V5 2/2] ath11k: add debugfs for TWT debug calls

[Kalle Valo]

Aloka Dixit <alokad@codeaurora.org> writes:

> From: John Crispin <john@phrozen.org>
>
> New debugfs files to manually add/delete/pause/resume TWT
> dialogs for test/debug purposes.
>
> The debugfs files expect the following parameters
> (1) Add dialog
> echo '<Peer_MAC> <Dialog_ID> <Wake_Interval_Usec> <Wake_Interval_Mantis>
> <Wake_Duration_Usec> <First_SP_Offset> <TWT_Command> <1:Broadcast /
> 0:Individual> <1:Triggered / 0:Untriggered> <1:Unannounced /
> 0:Announced> <1:Protected / 0:Unprotected>' >
> /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/twt/add_dialog
>
> Example (Non-triggered and un-announced):
> echo '00:03:7F:20:13:52 1 102400 100 30720 20480 4 0 0 1 0' >
> /sys/kernel/debug/ieee80211/phy0/netdev:wlan0/twt/add_dialog
>
> (2) Delete dialog
> echo '<Peer_MAC> <Dialog_ID>' >
> /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/twt/del_dialog
>
> (3) Pause dialog
> echo '<Peer_MAC> <Dialog_ID>' >
> /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/twt/pause_dialog
>
> (4) Resume dialog
> echo '<Peer_MAC> <Dialog_ID> <SP_Offset_Usec> <Next_TWT_Size>' >
> /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/twt/resume_dialog
>
> Example:
> echo '00:03:7F:20:13:52 1 2000000 3' >
> /sys/kernel/debug/ieee80211/phy0/netdev:wlan0/twt/resume_dialog
>
> Signed-off-by: John Crispin <john@phrozen.org>
> Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
> Signed-off-by: Aloka Dixit <alokad@codeaurora.org>

[...]

> --- a/drivers/net/wireless/ath/ath11k/debug.c
> +++ b/drivers/net/wireless/ath/ath11k/debug.c
> @@ -104,3 +104,227 @@ void ath11k_dbg_dump(struct ath11k_base *ab,
>  EXPORT_SYMBOL(ath11k_dbg_dump);
>  
>  #endif /* CONFIG_ATH11K_DEBUG */
> +
> +#ifdef CONFIG_ATH11K_DEBUGFS
> +static ssize_t ath11k_write_twt_add_dialog(struct file *file,
> +					   const char __user *ubuf,
> +					   size_t count, loff_t *ppos)
> +{
> +	struct ath11k_vif *arvif = file->private_data;
> +	struct wmi_twt_add_dialog_params params = { 0 };
> +	u8 buf[128] = {0};
> +	int ret;
> +
> +	if (arvif->ar->twt_enabled == 0) {
> +		ath11k_err(arvif->ar->ab, "TWT support is not enabled\n");
> +		return -EOPNOTSUPP;
> +	}
> +
> +	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
> +	if (ret < 0)
> +		return ret;
> +
> +	buf[ret] = '\0';
> +	ret = sscanf(buf,
> +		     "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx %u %u %u %u %u %hhu %hhu %hhu %hhu %hhu",
> +		     &params.peer_macaddr[0],
> +		     &params.peer_macaddr[1],
> +		     &params.peer_macaddr[2],
> +		     &params.peer_macaddr[3],
> +		     &params.peer_macaddr[4],
> +		     &params.peer_macaddr[5],
> +		     &params.dialog_id,
> +		     &params.wake_intvl_us,
> +		     &params.wake_intvl_mantis,
> +		     &params.wake_dura_us,
> +		     &params.sp_offset_us,
> +		     &params.twt_cmd,
> +		     &params.flag_bcast,
> +		     &params.flag_trigger,
> +		     &params.flag_flow_type,
> +		     &params.flag_protection);
> +	if (ret != 16)
> +		return -EINVAL;
> +
> +	params.vdev_id = arvif->vdev_id;
> +
> +	ret = ath11k_wmi_send_twt_add_dialog_cmd(arvif->ar, &params);
> +	if (ret)
> +		return ret;
> +
> +	return count;
> +}
> +
> +static ssize_t ath11k_write_twt_del_dialog(struct file *file,
> +					   const char __user *ubuf,
> +					   size_t count, loff_t *ppos)
> +{
> +	struct ath11k_vif *arvif = file->private_data;
> +	struct wmi_twt_del_dialog_params params = { 0 };
> +	u8 buf[64] = {0};
> +	int ret;
> +
> +	if (arvif->ar->twt_enabled == 0) {
> +		ath11k_err(arvif->ar->ab, "TWT support is not enabled\n");
> +		return -EOPNOTSUPP;
> +	}
> +
> +	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
> +	if (ret < 0)
> +		return ret;
> +
> +	buf[ret] = '\0';
> +	ret = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx %u",
> +		     &params.peer_macaddr[0],
> +		     &params.peer_macaddr[1],
> +		     &params.peer_macaddr[2],
> +		     &params.peer_macaddr[3],
> +		     &params.peer_macaddr[4],
> +		     &params.peer_macaddr[5],
> +		     &params.dialog_id);
> +	if (ret != 7)
> +		return -EINVAL;
> +
> +	params.vdev_id = arvif->vdev_id;
> +
> +	ret = ath11k_wmi_send_twt_del_dialog_cmd(arvif->ar, &params);
> +	if (ret)
> +		return ret;
> +
> +	return count;
> +}
> +
> +static ssize_t ath11k_write_twt_pause_dialog(struct file *file,
> +					     const char __user *ubuf,
> +					     size_t count, loff_t *ppos)
> +{
> +	struct ath11k_vif *arvif = file->private_data;
> +	struct wmi_twt_pause_dialog_params params = { 0 };
> +	u8 buf[64] = {0};
> +	int ret;
> +
> +	if (arvif->ar->twt_enabled == 0) {
> +		ath11k_err(arvif->ar->ab, "TWT support is not enabled\n");
> +		return -EOPNOTSUPP;
> +	}
> +
> +	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
> +	if (ret < 0)
> +		return ret;
> +
> +	buf[ret] = '\0';
> +	ret = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx %u",
> +		     &params.peer_macaddr[0],
> +		     &params.peer_macaddr[1],
> +		     &params.peer_macaddr[2],
> +		     &params.peer_macaddr[3],
> +		     &params.peer_macaddr[4],
> +		     &params.peer_macaddr[5],
> +		     &params.dialog_id);
> +	if (ret != 7)
> +		return -EINVAL;
> +
> +	params.vdev_id = arvif->vdev_id;
> +
> +	ret = ath11k_wmi_send_twt_pause_dialog_cmd(arvif->ar, &params);
> +	if (ret)
> +		return ret;
> +
> +	return count;
> +}
> +
> +static ssize_t ath11k_write_twt_resume_dialog(struct file *file,
> +					      const char __user *ubuf,
> +					      size_t count, loff_t *ppos)
> +{
> +	struct ath11k_vif *arvif = file->private_data;
> +	struct wmi_twt_resume_dialog_params params = { 0 };
> +	u8 buf[64] = {0};
> +	int ret;
> +
> +	if (arvif->ar->twt_enabled == 0) {
> +		ath11k_err(arvif->ar->ab, "TWT support is not enabled\n");
> +		return -EOPNOTSUPP;
> +	}
> +
> +	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count);
> +	if (ret < 0)
> +		return ret;
> +
> +	buf[ret] = '\0';
> +	ret = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx %u %u %u",
> +		     &params.peer_macaddr[0],
> +		     &params.peer_macaddr[1],
> +		     &params.peer_macaddr[2],
> +		     &params.peer_macaddr[3],
> +		     &params.peer_macaddr[4],
> +		     &params.peer_macaddr[5],
> +		     &params.dialog_id,
> +		     &params.sp_offset_us,
> +		     &params.next_twt_size);
> +	if (ret != 9)
> +		return -EINVAL;
> +
> +	params.vdev_id = arvif->vdev_id;
> +
> +	ret = ath11k_wmi_send_twt_resume_dialog_cmd(arvif->ar, &params);
> +	if (ret)
> +		return ret;
> +
> +	return count;
> +}
> +
> +static const struct file_operations ath11k_fops_twt_add_dialog = {
> +	.write = ath11k_write_twt_add_dialog,
> +	.open = simple_open
> +};
> +
> +static const struct file_operations ath11k_fops_twt_del_dialog = {
> +	.write = ath11k_write_twt_del_dialog,
> +	.open = simple_open
> +};
> +
> +static const struct file_operations ath11k_fops_twt_pause_dialog = {
> +	.write = ath11k_write_twt_pause_dialog,
> +	.open = simple_open
> +};
> +
> +static const struct file_operations ath11k_fops_twt_resume_dialog = {
> +	.write = ath11k_write_twt_resume_dialog,
> +	.open = simple_open
> +};
> +
> +void ath11k_debugfs_add_interface(struct ath11k_vif *arvif)
> +{
> +	if (arvif->vif->type == NL80211_IFTYPE_AP && !arvif->debugfs_twt) {
> +		arvif->debugfs_twt = debugfs_create_dir("twt",
> +							arvif->vif->debugfs_dir);
> +		if (IS_ERR_OR_NULL(arvif->debugfs_twt)) {
> +			ath11k_warn(arvif->ar->ab,
> +				    "failed to create twt debugfs: %p\n",
> +				    arvif->debugfs_twt);
> +			arvif->debugfs_twt = NULL;
> +			return;
> +		}
> +
> +		debugfs_create_file("add_dialog", 0200, arvif->debugfs_twt,
> +				    arvif, &ath11k_fops_twt_add_dialog);
> +
> +		debugfs_create_file("del_dialog", 0200, arvif->debugfs_twt,
> +				    arvif, &ath11k_fops_twt_del_dialog);
> +
> +		debugfs_create_file("pause_dialog", 0200, arvif->debugfs_twt,
> +				    arvif, &ath11k_fops_twt_pause_dialog);
> +
> +		debugfs_create_file("resume_dialog", 0200, arvif->debugfs_twt,
> +				    arvif, &ath11k_fops_twt_resume_dialog);
> +	}
> +}
> +
> +void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif)
> +{
> +	debugfs_remove_recursive(arvif->debugfs_twt);
> +	arvif->debugfs_twt = NULL;
> +}
> +
> +#endif /* CONFIG_ATH11K_DEBUGFS */

Shouldn't these functions be in debugfs.c?

> diff --git a/drivers/net/wireless/ath/ath11k/debug.h b/drivers/net/wireless/ath/ath11k/debug.h
> index 659a275e2eb3..2b41cefb68b5 100644
> --- a/drivers/net/wireless/ath/ath11k/debug.h
> +++ b/drivers/net/wireless/ath/ath11k/debug.h
> @@ -64,4 +64,17 @@ do {								\
>  		__ath11k_dbg(ar, dbg_mask, fmt, ##__VA_ARGS__);	\
>  } while (0)
>  
> +#ifdef CONFIG_ATH11K_DEBUGFS
> +void ath11k_debugfs_add_interface(struct ath11k_vif *arvif);
> +void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif);
> +#else /* CONFIG_ATH11K_DEBUGFS */
> +static inline void ath11k_debugfs_add_interface(struct ath11k_vif *arvif)
> +{
> +}
> +
> +static inline void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif)
> +{
> +}
> +#endif /* CONFIG_ATH11K_DEBUGFS */

And these in debugfs.h?

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