diff mbox series

[RESEND,6/9] ath11k: add debugfs for TWT debug calls

Message ID 20191204053713.3064-7-john@phrozen.org (mailing list archive)
State Superseded
Delegated to: Kalle Valo
Headers show
Series ath11k: resend pending patches | expand

Commit Message

John Crispin Dec. 4, 2019, 5:37 a.m. UTC 
These new debugfs files allow us to manually add/del/pause/resume TWT
dialogs for test/debug purposes.

Signed-off-by: John Crispin <john@phrozen.org>
---
 drivers/net/wireless/ath/ath11k/core.h  |   1 +
 drivers/net/wireless/ath/ath11k/debug.c | 197 ++++++++++++++++++++++++
 drivers/net/wireless/ath/ath11k/debug.h |   8 +
 drivers/net/wireless/ath/ath11k/mac.c   |   4 +
 4 files changed, 210 insertions(+)

Comments

Vasanthakumar Thiagarajan Dec. 4, 2019, 6 a.m. UTC | #1 
On 2019-12-04 11:07, John Crispin wrote:
> These new debugfs files allow us to manually add/del/pause/resume TWT
> dialogs for test/debug purposes.
> 

Information such as how these debugfs entries are supposed to be used
could be helpful.

Vasanth
Kalle Valo Dec. 19, 2019, 1:25 p.m. UTC | #2 
vthiagar@codeaurora.org writes:

> On 2019-12-04 11:07, John Crispin wrote:
>> These new debugfs files allow us to manually add/del/pause/resume TWT
>> dialogs for test/debug purposes.
>>
>
> Information such as how these debugfs entries are supposed to be used
> could be helpful.

Yes, please always add instructions how the debugfs file is supposed to
be used. Not only it helps the users but makes the review easier as
well.
John Crispin Dec. 19, 2019, 1:45 p.m. UTC | #3 
On 19/12/2019 14:25, Kalle Valo wrote:
> vthiagar@codeaurora.org writes:
> 
>> On 2019-12-04 11:07, John Crispin wrote:
>>> These new debugfs files allow us to manually add/del/pause/resume TWT
>>> dialogs for test/debug purposes.
>>>
>>
>> Information such as how these debugfs entries are supposed to be used
>> could be helpful.
> 
> Yes, please always add instructions how the debugfs file is supposed to
> be used. Not only it helps the users but makes the review easier as
> well.
> 

I did in the V3 series --> https://patchwork.kernel.org/patch/11290751/
	John
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 25cdcf71d0c4..65d8684364dd 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -216,6 +216,7 @@  struct ath11k_vif {
 	int num_legacy_stations;
 	int rtscts_prot_mode;
 	int txpower;
+	struct dentry *debugfs_twt;
 };
 
 struct ath11k_vif_iter {
diff --git a/drivers/net/wireless/ath/ath11k/debug.c b/drivers/net/wireless/ath/ath11k/debug.c
index c27fffd13a5d..bcae14e5de9f 100644
--- a/drivers/net/wireless/ath/ath11k/debug.c
+++ b/drivers/net/wireless/ath/ath11k/debug.c
@@ -104,6 +104,203 @@  void ath11k_dbg_dump(struct ath11k_base *ab,
 
 #endif
 
+#ifdef CONFIG_MAC80211_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;
+
+	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);
+
+	return ret ? ret : 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;
+
+	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);
+
+	return ret ? ret : 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;
+
+	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);
+
+	return ret ? ret : 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;
+
+	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);
+
+	return ret ? ret : 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_twt(struct ath11k_vif *arvif, bool enable)
+{
+	if (!enable && arvif->debugfs_twt) {
+		debugfs_remove_recursive(arvif->debugfs_twt);
+		arvif->debugfs_twt = NULL;
+		return;
+	}
+
+	if (arvif->debugfs_twt)
+		return;
+
+	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);
+}
+#endif
+
 #ifdef CONFIG_ATH11K_DEBUGFS
 static void ath11k_fw_stats_pdevs_free(struct list_head *head)
 {
diff --git a/drivers/net/wireless/ath/ath11k/debug.h b/drivers/net/wireless/ath/ath11k/debug.h
index a317a7bdb9a2..805e30c07e14 100644
--- a/drivers/net/wireless/ath/ath11k/debug.h
+++ b/drivers/net/wireless/ath/ath11k/debug.h
@@ -133,6 +133,14 @@  static inline void ath11k_dbg_dump(struct ath11k_base *ab,
 }
 #endif /* CONFIG_ATH11K_DEBUG */
 
+#ifdef CONFIG_MAC80211_DEBUGFS
+void ath11k_debugfs_twt(struct ath11k_vif *arvif, bool enable);
+#else
+static inline void ath11k_debugfs_twt(struct ath11k_vif *arvif, bool enable)
+{
+}
+#endif
+
 #ifdef CONFIG_ATH11K_DEBUGFS
 int ath11k_debug_soc_create(struct ath11k_base *ab);
 void ath11k_debug_soc_destroy(struct ath11k_base *ab);
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index a2c8a52b8621..6a8c1c3b8da2 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -1920,6 +1920,8 @@  static void ath11k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
 			ath11k_wmi_send_twt_enable_cmd(ar, ar->pdev_idx);
 		else
 			ath11k_wmi_send_twt_disable_cmd(ar, ar->pdev_idx);
+		if (vif->type == NL80211_IFTYPE_AP)
+			ath11k_debugfs_twt(arvif, info->twt_requester);
 	}
 
 	if (changed & BSS_CHANGED_HE_OBSS_PD)
@@ -4217,6 +4219,8 @@  static void ath11k_mac_op_remove_interface(struct ieee80211_hw *hw,
 
 	/* TODO: recal traffic pause state based on the available vdevs */
 
+	debugfs_remove_recursive(arvif->debugfs_twt);
+	arvif->debugfs_twt = NULL;
 	mutex_unlock(&ar->conf_mutex);
 }