qcacld-3.0: Add sysfs entry to display ftm time sync offset

Add the sysfs entry ftm_time_sync in STA mode to show the offset
derived for the STA(slave) with respect to connected AP(master).

Change-Id: I05b16ccdb983c53fb86eeb14ba98bd3cc9a2dce6
CRs-Fixed: 2621152

Kbuild

@@ -277,6 +277,10 @@ ifeq ($(CONFIG_QCACLD_FEATURE_BTC_CHAIN_MODE), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_btc_chain_mode.o
 endif
 
+ifeq ($(CONFIG_FEATURE_WLAN_TIME_SYNC_FTM), y)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_ftm_time_sync.o
+endif
+
 ###### OSIF_SYNC ########
 SYNC_DIR := os_if/sync
 SYNC_INC_DIR := $(SYNC_DIR)/inc

components/ftm_time_sync/core/inc/ftm_time_sync_main.h

@@ -160,4 +160,12 @@ QDF_STATUS ftm_time_sync_send_trigger(struct wlan_objmgr_vdev *vdev);
  */
 QDF_STATUS ftm_time_sync_stop(struct wlan_objmgr_vdev *vdev);
 
+/**
+ * ftm_time_sync_show() - Handler to print the offset derived
+ * @vdev: vdev for which offset is to be shown
+ * @buf: buffer in which the values to be printed
+ *
+ * Return: the number of bytes written in buf
+ */
+ssize_t ftm_time_sync_show(struct wlan_objmgr_vdev *vdev, char *buf);
 #endif /* end of _FTM_TIME_SYNC_MAIN_H_ */

components/ftm_time_sync/core/src/ftm_time_sync_main.c

@@ -372,3 +372,30 @@ QDF_STATUS ftm_time_sync_stop(struct wlan_objmgr_vdev *vdev)
 
 	return QDF_STATUS_SUCCESS;
 }
+
+ssize_t ftm_time_sync_show(struct wlan_objmgr_vdev *vdev, char *buf)
+{
+	struct ftm_time_sync_vdev_priv *vdev_priv;
+	uint64_t q_master, q_slave;
+	ssize_t size = 0;
+	int iter;
+
+	vdev_priv = ftm_time_sync_vdev_get_priv(vdev);
+	if (!vdev_priv) {
+		ftm_time_sync_debug("Failed to get ftm time sync vdev_priv");
+		return 0;
+	}
+
+	for (iter = 0; iter < vdev_priv->num_qtime_pair; iter++) {
+		q_master = vdev_priv->ftm_ts_priv.time_pair[iter].qtime_master;
+		q_slave = vdev_priv->ftm_ts_priv.time_pair[iter].qtime_slave;
+
+		size += qdf_scnprintf(buf + size, PAGE_SIZE,
+				      "%s %llu %s %llu %s %lld\n",
+				      "Qtime_master", q_master, "Qtime_slave",
+				      q_slave, "Offset", q_slave > q_master ?
+				      q_slave - q_master : q_master - q_slave);
+	}
+	return size;
+}
+

components/ftm_time_sync/dispatcher/inc/ftm_time_sync_ucfg_api.h

@@ -96,6 +96,18 @@ ucfg_ftm_time_sync_update_sta_connect_state(struct wlan_objmgr_vdev *vdev,
  */
 void ucfg_ftm_time_sync_update_bss_state(struct wlan_objmgr_vdev *vdev,
 					 enum ftm_time_sync_bss_state ap_state);
+
+/**
+ * ucfg_ftm_time_sync_show() - Show the ftm time sync offset values derived
+ * @vdev: vdev context
+ * @buf: buffer in which the values to be written
+ *
+ * This function prints the offset values derived after ftm time sync
+ * between the qtime of STA(slave) and connected SAP(master).
+ *
+ * Return: number of bytes written in buffer
+ */
+ssize_t ucfg_ftm_time_sync_show(struct wlan_objmgr_vdev *vdev, char *buf);
 #else
 
 static inline
@@ -131,5 +143,11 @@ ucfg_ftm_time_sync_update_bss_state(struct wlan_objmgr_vdev *vdev,
 				    enum ftm_time_sync_bss_state ap_state)
 {
 }
+
+static inline
+ssize_t ucfg_ftm_time_sync_show(struct wlan_objmgr_vdev *vdev, char *buf)
+{
+	return 0;
+}
 #endif /* FEATURE_WLAN_TIME_SYNC_FTM */
 #endif /* _FTM_TIME_SYNC_UCFG_API_H_ */

components/ftm_time_sync/dispatcher/src/ftm_time_sync_ucfg_api.c

@@ -166,3 +166,8 @@ void ucfg_ftm_time_sync_update_bss_state(struct wlan_objmgr_vdev *vdev,
 			ftm_time_sync_stop(vdev);
 	}
 }
+
+ssize_t ucfg_ftm_time_sync_show(struct wlan_objmgr_vdev *vdev, char *buf)
+{
+	return ftm_time_sync_show(vdev, buf);
+}

core/hdd/inc/wlan_hdd_ftm_time_sync.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "ftm_time_sync_ucfg_api.h"
+#include "wlan_hdd_main.h"
+
+#ifdef FEATURE_WLAN_TIME_SYNC_FTM
+/**
+ * hdd_ftm_time_sync_sta_state_notify() - notify FTM TIME SYNC sta state change
+ * @adapter: pointer to adapter
+ * @state: enum ftm_time_sync_sta_state
+ *
+ * This function is called by hdd connect and disconnect handler and notifies
+ * the FTM TIME SYNC component about the sta state.
+ *
+ * Return: None
+ */
+void
+hdd_ftm_time_sync_sta_state_notify(struct hdd_adapter *adapter,
+				   enum ftm_time_sync_sta_state state);
+
+#else
+
+static inline void
+hdd_ftm_time_sync_sta_state_notify(struct hdd_adapter *adapter,
+				   enum ftm_time_sync_sta_state state)
+{
+}
+
+#endif

core/hdd/src/wlan_hdd_assoc.c

@@ -71,7 +71,7 @@
 #include <wlan_crypto_global_api.h>
 #include "wlan_blm_ucfg_api.h"
 #include "wlan_hdd_sta_info.h"
-#include "ftm_time_sync_ucfg_api.h"
+#include "wlan_hdd_ftm_time_sync.h"
 
 #include <ol_defines.h>
 
@@ -1669,32 +1669,6 @@ static void hdd_print_bss_info(struct hdd_station_ctx *hdd_sta_ctx)
 		       conn_info->hs20vendor_ie.release_num : 0);
 }
 
-/**
- * hdd_ftm_time_sync_sta_state_notify() - notify FTM TIME SYNC sta state change
- * @adapter: pointer to adapter
- * @state: enum ftm_time_sync_sta_state
- *
- * This function is called by hdd connect and disconnect handler and notifies
- * the FTM TIME SYNC component about the sta state.
- *
- * Return: None
- */
-static void
-hdd_ftm_time_sync_sta_state_notify(struct hdd_adapter *adapter,
-				   enum ftm_time_sync_sta_state state)
-{
-	struct wlan_objmgr_psoc *psoc;
-
-	psoc = wlan_vdev_get_psoc(adapter->vdev);
-	if (!psoc)
-		return;
-
-	if (!ucfg_is_ftm_time_sync_enable(psoc))
-		return;
-
-	ucfg_ftm_time_sync_update_sta_connect_state(adapter->vdev, state);
-}
-
 /**
  * hdd_dis_connect_handler() - disconnect event handler
  * @adapter: pointer to adapter

core/hdd/src/wlan_hdd_ftm_time_sync.c

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "wlan_hdd_ftm_time_sync.h"
+#include "ftm_time_sync_ucfg_api.h"
+
+static ssize_t hdd_ftm_time_sync_show(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct hdd_station_ctx *hdd_sta_ctx;
+	struct hdd_adapter *adapter;
+	ssize_t size = 0;
+
+	struct net_device *net_dev = qdf_container_of(dev, struct net_device,
+						      dev);
+
+	adapter = (struct hdd_adapter *)(netdev_priv(net_dev));
+	if (adapter->magic != WLAN_HDD_ADAPTER_MAGIC)
+		return scnprintf(buf, PAGE_SIZE, "Invalid device\n");
+
+	hdd_sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(adapter);
+	if (adapter->device_mode == QDF_STA_MODE)
+		return ucfg_ftm_time_sync_show(adapter->vdev, buf);
+
+	return size;
+}
+
+static DEVICE_ATTR(ftm_time_sync, 0400, hdd_ftm_time_sync_show, NULL);
+
+void
+hdd_ftm_time_sync_sta_state_notify(struct hdd_adapter *adapter,
+				   enum ftm_time_sync_sta_state state)
+{
+	struct wlan_objmgr_psoc *psoc;
+	struct net_device *net_dev;
+
+	psoc = wlan_vdev_get_psoc(adapter->vdev);
+	if (!psoc)
+		return;
+
+	if (!ucfg_is_ftm_time_sync_enable(psoc))
+		return;
+
+	net_dev = adapter->dev;
+
+	if (net_dev) {
+		if (state == FTM_TIME_SYNC_STA_CONNECTED)
+			device_create_file(&net_dev->dev,
+					   &dev_attr_ftm_time_sync);
+		else
+			device_remove_file(&net_dev->dev,
+					   &dev_attr_ftm_time_sync);
+	}
+
+	ucfg_ftm_time_sync_update_sta_connect_state(adapter->vdev, state);
+}