qcacld-3.0: Add a sysfs replacement for set_dp_trace

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

file path: /sys/kernel/wifi/set_dp_trace

example: echo 1 1 1 > set_dp_trace

Change-Id: I3358ad4f483f66f643c4aa5538fd2c9172d8f077
CRs-Fixed: 2683643

Kbuild

@@ -303,6 +303,9 @@ endif
 ifeq ($(CONFIG_WLAN_TXRX_STATS), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_txrx_stats.o
 endif
+ifeq ($(CONFIG_WLAN_SET_DP_TRACE), y)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_set_dp_trace.o
+endif
 endif
 
 ifeq ($(CONFIG_QCACLD_FEATURE_FW_STATE), y)
@@ -2539,6 +2542,7 @@ cppflags-$(CONFIG_WLAN_SET_MON_CHAN) += -DCONFIG_WLAN_SET_MON_CHAN
 cppflags-$(CONFIG_WLAN_SET_RADAR) += -DCONFIG_WLAN_SET_RADAR
 cppflags-$(CONFIG_WLAN_TXRX_FW_STATS) += -DCONFIG_WLAN_TXRX_FW_STATS
 cppflags-$(CONFIG_WLAN_TXRX_STATS) += -DCONFIG_WLAN_TXRX_STATS
+cppflags-$(CONFIG_WLAN_SET_DP_TRACE) += -DCONFIG_WLAN_SET_DP_TRACE
 cppflags-$(CONFIG_FEATURE_UNIT_TEST_SUSPEND) += -DWLAN_SUSPEND_RESUME_TEST
 cppflags-$(CONFIG_FEATURE_WLM_STATS) += -DFEATURE_WLM_STATS
 

configs/default_defconfig

@@ -187,6 +187,7 @@ ifeq ($(CONFIG_WLAN_SYSFS), y)
 	CONFIG_WLAN_SET_RADAR := y
 	CONFIG_WLAN_TXRX_FW_STATS := y
 	CONFIG_WLAN_TXRX_STATS := y
+	CONFIG_WLAN_SET_DP_TRACE := y
 endif
 
 CONFIG_WLAN_POWER_DEBUG := y

core/hdd/src/wlan_hdd_sysfs.c

@@ -53,6 +53,7 @@
 #include <wlan_hdd_sysfs_set_radar.h>
 #include <wlan_hdd_sysfs_txrx_fw_stats.h>
 #include <wlan_hdd_sysfs_txrx_stats.h>
+#include <wlan_hdd_sysfs_set_dp_trace.h>
 
 #define MAX_PSOC_ID_SIZE 10
 
@@ -704,12 +705,14 @@ void hdd_create_sysfs_files(struct hdd_context *hdd_ctx)
 		hdd_sysfs_scan_disable_create(driver_kobject);
 		hdd_sysfs_wow_ito_create(driver_kobject);
 		hdd_sysfs_set_scan_cfg_create(driver_kobject);
+		hdd_sysfs_set_dp_trace_create(driver_kobject);
 	}
 }
 
 void hdd_destroy_sysfs_files(void)
 {
 	if  (QDF_GLOBAL_MISSION_MODE == hdd_get_conparam()) {
+		hdd_sysfs_set_dp_trace_destroy(driver_kobject);
 		hdd_sysfs_set_scan_cfg_destroy(driver_kobject);
 		hdd_sysfs_wow_ito_destroy(driver_kobject);
 		hdd_sysfs_scan_disable_destroy(driver_kobject);

core/hdd/src/wlan_hdd_sysfs_set_dp_trace.c

@@ -0,0 +1,139 @@
+/*
+ * 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_dp_trace.c
+ *
+ * implementation for creating sysfs file set_dp_trace
+ */
+
+#include <wlan_hdd_includes.h>
+#include "osif_psoc_sync.h"
+#include <wlan_hdd_sysfs.h>
+#include <wlan_hdd_sysfs_set_dp_trace.h>
+#include "qdf_trace.h"
+
+static ssize_t
+__hdd_sysfs_set_dp_trace_store(struct hdd_context *hdd_ctx,
+			       struct kobj_attribute *attr,
+			       const char *buf,
+			       size_t count)
+{
+	char buf_local[MAX_SYSFS_USER_COMMAND_SIZE_LENGTH + 1];
+	char *sptr, *token;
+	uint32_t val1;
+	uint8_t val2, val3;
+	int 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_dp_trace: count %zu buf_local:(%s)",
+		  count, buf_local);
+
+	/* Get val1 */
+	token = strsep(&sptr, " ");
+	if (!token)
+		return -EINVAL;
+	if (kstrtou32(token, 0, &val1))
+		return -EINVAL;
+
+	/* Get val2 */
+	token = strsep(&sptr, " ");
+	if (!token)
+		return -EINVAL;
+	if (kstrtou8(token, 0, &val2))
+		return -EINVAL;
+
+	/* Get val3 */
+	token = strsep(&sptr, " ");
+	if (!token)
+		return -EINVAL;
+	if (kstrtou8(token, 0, &val3))
+		return -EINVAL;
+
+	qdf_dp_trace_set_value(val1, val2, val3);
+
+	return count;
+}
+
+static ssize_t
+hdd_sysfs_set_dp_trace_store(struct kobject *kobj,
+			     struct kobj_attribute *attr,
+			     const char *buf,
+			     size_t count)
+{
+	struct osif_psoc_sync *psoc_sync;
+	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
+	ssize_t errno_size;
+	int ret;
+
+	ret = wlan_hdd_validate_context(hdd_ctx);
+	if (ret != 0)
+		return ret;
+
+	errno_size = osif_psoc_sync_op_start(wiphy_dev(hdd_ctx->wiphy),
+					     &psoc_sync);
+	if (errno_size)
+		return errno_size;
+
+	errno_size = __hdd_sysfs_set_dp_trace_store(hdd_ctx, attr,
+						    buf, count);
+
+	osif_psoc_sync_op_stop(psoc_sync);
+
+	return errno_size;
+}
+
+static struct kobj_attribute set_dp_trace_attribute =
+	__ATTR(set_dp_trace, 0220, NULL,
+	       hdd_sysfs_set_dp_trace_store);
+
+int hdd_sysfs_set_dp_trace_create(struct kobject *driver_kobject)
+{
+	int error;
+
+	if (!driver_kobject) {
+		hdd_err("could not get driver kobject!");
+		return -EINVAL;
+	}
+
+	error = sysfs_create_file(driver_kobject,
+				  &set_dp_trace_attribute.attr);
+	if (error)
+		hdd_err("could not create set_dp_trace sysfs file");
+
+	return error;
+}
+
+void
+hdd_sysfs_set_dp_trace_destroy(struct kobject *driver_kobject)
+{
+	if (!driver_kobject) {
+		hdd_err("could not get driver kobject!");
+		return;
+	}
+	sysfs_remove_file(driver_kobject, &set_dp_trace_attribute.attr);
+}

core/hdd/src/wlan_hdd_sysfs_set_dp_trace.h

@@ -0,0 +1,60 @@
+/*
+ * 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_dp_trace.h
+ *
+ * implementation for creating sysfs file set_dp_trace
+ */
+
+#ifndef _WLAN_HDD_SYSFS_SET_DP_TRACE_H
+#define _WLAN_HDD_SYSFS_SET_DP_TRACE_H
+
+#if defined(WLAN_SYSFS) && defined(CONFIG_WLAN_SET_DP_TRACE)
+/**
+ * hdd_sysfs_set_dp_trace_create() - API to create set_dp_trace
+ * @driver_kobject: sysfs driver kobject
+ *
+ * file path: /sys/kernel/wifi/set_dp_trace
+ *
+ * usage:
+ *      echo [arg_0] [arg_1] [arg_2]> set_dp_trace
+ *
+ * Return: 0 on success and errno on failure
+ */
+int hdd_sysfs_set_dp_trace_create(struct kobject *driver_kobject);
+
+/**
+ * hdd_sysfs_set_dp_trace_destroy() -
+ *   API to destroy set_dp_trace
+ *
+ * Return: none
+ */
+void
+hdd_sysfs_set_dp_trace_destroy(struct kobject *driver_kobject);
+#else
+static inline int
+hdd_sysfs_set_dp_trace_create(struct kobject *driver_kobject)
+{
+	return 0;
+}
+
+static inline void
+hdd_sysfs_set_dp_trace_destroy(struct kobject *driver_kobject)
+{
+}
+#endif
+#endif /* #ifndef _WLAN_HDD_SYSFS_SET_DP_TRACE_H */