qcacld-3.0: Add a sysfs replacement for setRadar

As part of WEXT replacement, replace setRadar with a sysfs file.

file path: /sys/class/net/wlanxx/set_radar
	wlanxx is adapter name

example: echo 1 > set_radar

Change-Id: I6451f506c1525dcfc48c988f965cc6dedf64b369
CRs-Fixed: 2680424

Kbuild

@@ -294,6 +294,9 @@ endif
 ifeq ($(CONFIG_WLAN_SET_MON_CHAN), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_set_mon_chan.o
 endif
+ifeq ($(CONFIG_WLAN_SET_RADAR), y)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_set_radar.o
+endif
 endif
 
 ifeq ($(CONFIG_QCACLD_FEATURE_FW_STATE), y)
@@ -2527,6 +2530,7 @@ cppflags-$(CONFIG_WLAN_WOW_ITO) += -DCONFIG_WLAN_WOW_ITO
 cppflags-$(CONFIG_WLAN_WOWL_ADD_PTRN) += -DCONFIG_WLAN_WOWL_ADD_PTRN
 cppflags-$(CONFIG_WLAN_SET_SCAN_CFG) += -DCONFIG_WLAN_SET_SCAN_CFG
 cppflags-$(CONFIG_WLAN_SET_MON_CHAN) += -DCONFIG_WLAN_SET_MON_CHAN
+cppflags-$(CONFIG_WLAN_SET_RADAR) += -DCONFIG_WLAN_SET_RADAR
 cppflags-$(CONFIG_FEATURE_UNIT_TEST_SUSPEND) += -DWLAN_SUSPEND_RESUME_TEST
 cppflags-$(CONFIG_FEATURE_WLM_STATS) += -DFEATURE_WLM_STATS
 

configs/default_defconfig

@@ -184,6 +184,7 @@ ifeq ($(CONFIG_WLAN_SYSFS), y)
 	CONFIG_WLAN_WOWL_ADD_PTRN := y
 	CONFIG_WLAN_SET_SCAN_CFG := y
 	CONFIG_WLAN_SET_MON_CHAN := y
+	CONFIG_WLAN_SET_RADAR := y
 endif
 
 CONFIG_WLAN_POWER_DEBUG := y

core/hdd/src/wlan_hdd_sysfs.c

@@ -50,6 +50,7 @@
 #include <wlan_hdd_sysfs_wowl_add_ptrn.h>
 #include <wlan_hdd_sysfs_set_scan_cfg.h>
 #include <wlan_hdd_sysfs_set_mon_chan.h>
+#include <wlan_hdd_sysfs_set_radar.h>
 
 #define MAX_PSOC_ID_SIZE 10
 
@@ -655,11 +656,13 @@ hdd_sysfs_create_sap_adapter_root_obj(struct hdd_adapter *adapter)
 	hdd_sysfs_unit_test_target_create(adapter);
 	hdd_sysfs_modify_acl_create(adapter);
 	hdd_sysfs_connect_info_interface_create(adapter);
+	hdd_sysfs_set_radar_create(adapter);
 }
 
 static void
 hdd_sysfs_destroy_sap_adapter_root_obj(struct hdd_adapter *adapter)
 {
+	hdd_sysfs_set_radar_destroy(adapter);
 	hdd_sysfs_connect_info_interface_destroy(adapter);
 	hdd_sysfs_modify_acl_destroy(adapter);
 	hdd_sysfs_unit_test_target_destroy(adapter);

core/hdd/src/wlan_hdd_sysfs_set_radar.c

@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2011-2020 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.
+ */
+
+/**
+ * DOC: wlan_hdd_sysfs_set_radar.c
+ *
+ * implementation for creating sysfs file set_radar
+ */
+
+#include <wlan_hdd_includes.h>
+#include "osif_vdev_sync.h"
+#include <wlan_hdd_sysfs.h>
+#include <wlan_hdd_sysfs_set_radar.h>
+#include "wlan_dfs_tgt_api.h"
+
+static ssize_t
+__hdd_sysfs_set_radar_store(struct net_device *net_dev,
+			    char const *buf, size_t count)
+{
+	struct hdd_adapter *adapter = netdev_priv(net_dev);
+	struct hdd_ap_ctx *ap_ctx = WLAN_HDD_GET_AP_CTX_PTR(adapter);
+	char buf_local[MAX_SYSFS_USER_COMMAND_SIZE_LENGTH + 1];
+	struct wlan_objmgr_pdev *pdev;
+	struct radar_found_info radar;
+	struct hdd_context *hdd_ctx;
+	char *sptr, *token;
+	int set_value;
+	int ret;
+
+	if (hdd_validate_adapter(adapter)) {
+		hdd_err_rl("adapter validate fail");
+		return -EINVAL;
+	}
+
+	hdd_ctx = WLAN_HDD_GET_CTX(adapter);
+	ret = wlan_hdd_validate_context(hdd_ctx);
+	if (ret != 0)
+		return ret;
+
+	if (!wlan_hdd_validate_modules_state(hdd_ctx))
+		return -EINVAL;
+
+	ret = hdd_sysfs_validate_and_copy_buf(buf_local, sizeof(buf_local),
+					      buf, count);
+
+	if (ret) {
+		hdd_err_rl("invalid input");
+		return ret;
+	}
+
+	sptr = buf_local;
+	hdd_debug("set_radar: count %zu buf_local:(%s) net_devname %s",
+		  count, buf_local, net_dev->name);
+
+	/* Get set_value */
+	token = strsep(&sptr, " ");
+	if (!token)
+		return -EINVAL;
+	if (kstrtou32(token, 0, &set_value))
+		return -EINVAL;
+
+	hdd_debug("Set QCASAP_SET_RADAR_CMD val %d", set_value);
+
+	pdev = hdd_ctx->pdev;
+	if (!pdev) {
+		hdd_err("null pdev");
+		return -EINVAL;
+	}
+
+	qdf_mem_zero(&radar, sizeof(radar));
+	if (wlan_reg_is_dfs_for_freq(pdev, ap_ctx->operating_chan_freq))
+		tgt_dfs_process_radar_ind(pdev, &radar);
+	else
+		hdd_debug("Ignore set radar, op ch_freq(%d) is not dfs",
+			  ap_ctx->operating_chan_freq);
+
+	return count;
+}
+
+static ssize_t
+hdd_sysfs_set_radar_store(struct device *dev,
+			  struct device_attribute *attr,
+			  char const *buf, size_t count)
+{
+	struct net_device *net_dev = container_of(dev, struct net_device, dev);
+	struct osif_vdev_sync *vdev_sync;
+	ssize_t errno_size;
+
+	errno_size = osif_vdev_sync_op_start(net_dev, &vdev_sync);
+	if (errno_size)
+		return errno_size;
+
+	errno_size = __hdd_sysfs_set_radar_store(net_dev, buf, count);
+
+	osif_vdev_sync_op_stop(vdev_sync);
+
+	return errno_size;
+}
+
+static DEVICE_ATTR(set_radar, 0220,
+		   NULL, hdd_sysfs_set_radar_store);
+
+int hdd_sysfs_set_radar_create(struct hdd_adapter *adapter)
+{
+	int error;
+
+	error = device_create_file(&adapter->dev->dev, &dev_attr_set_radar);
+	if (error)
+		hdd_err("could not create set_radar sysfs file");
+
+	return error;
+}
+
+void hdd_sysfs_set_radar_destroy(struct hdd_adapter *adapter)
+{
+	device_remove_file(&adapter->dev->dev, &dev_attr_set_radar);
+}

core/hdd/src/wlan_hdd_sysfs_set_radar.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2011-2020 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.
+ */
+
+/**
+ * DOC: wlan_hdd_sysfs_set_radar.h
+ *
+ * implementation for creating sysfs file set_radar
+ */
+
+#ifndef _WLAN_HDD_SYSFS_SET_RADAR_H
+#define _WLAN_HDD_SYSFS_SET_RADAR_H
+
+#if defined(WLAN_SYSFS) && defined(CONFIG_WLAN_SET_RADAR)
+/**
+ * wlan_hdd_sysfs_set_radar_create() - API to create set_radar
+ * (for sap mode only)
+ * @adapter: hdd adapter
+ *
+ * this file is created per adapter.
+ * file path: /sys/class/net/wlanxx/set_radar
+ *                (wlanxx is adapter name)
+ * usage:
+ *      echo [arg_0] > set_radar
+ *
+ * Return: 0 on success and errno on failure
+ */
+int hdd_sysfs_set_radar_create(struct hdd_adapter *adapter);
+
+/**
+ * hdd_sysfs_set_radar_destroy() -
+ *   API to destroy set_radar
+ * @adapter: pointer to adapter
+ *
+ * Return: none
+ */
+void hdd_sysfs_set_radar_destroy(struct hdd_adapter *adapter);
+#else
+static inline int
+hdd_sysfs_set_radar_create(struct hdd_adapter *adapter)
+{
+	return 0;
+}
+
+static inline void
+hdd_sysfs_set_radar_destroy(struct hdd_adapter *adapter)
+{
+}
+#endif
+#endif /* #ifndef _WLAN_HDD_SYSFS_SET_RADAR_H */