qcacld-3.0: Add sysfs entry for the pktlog

Add the sysfs entry for the pktlog.
Previously get_ampdu,get_amsdu would be queried via iwpriv
    --> iwpriv wlan0 1 1 pktlog
it is now changed to support via sysfs:
    --> echo 1 1 > /sys/class/net/wifi/pktlog

Change-Id: Id5461c86bb1369a04bc68514e874df6df1230b85
CRs-Fixed: 2684106

Kbuild

@@ -358,6 +358,9 @@ endif
 ifeq ($(CONFIG_IPA_OFFLOAD), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_ipa.o
 endif
+ifeq ($(CONFIG_REMOVE_PKT_LOG), n)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_pktlog.o
+endif
 endif
 
 ifeq ($(CONFIG_QCACLD_FEATURE_FW_STATE), y)

core/hdd/inc/wlan_hdd_sysfs_pkt_log.h

@@ -0,0 +1,51 @@
+/*
+ * 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.
+ */
+#ifndef WLAN_HDD_SYSFS_PKT_LOG_H
+#define WLAN_HDD_SYSFS_PKT_LOG_H
+
+ #if defined(WLAN_SYSFS) && !defined(REMOVE_PKT_LOG)
+
+/**
+ * hdd_sysfs_pktlog_create(): Initialize pktlog specific sysfs file
+ * @driver_kobject: Driver Kobject
+ *
+ * Function to initialize pktlog specific mode syfs files.
+ *
+ * Return: NONE
+ */
+void hdd_sysfs_pktlog_create(struct kobject *driver_kobject);
+
+/**
+ * hdd_sysfs_pktlog_destroy(): Remove pktlog sysfs file
+ * @driver_kobject: Driver Kobject
+ *
+ * Function to remove pktlog specific mode syfs files.
+ *
+ * Return: NONE
+ */
+void hdd_sysfs_pktlog_destroy(struct kobject *driver_kobject);
+#else
+static inline
+void hdd_sysfs_pktlog_create(struct kobject *driver_kobject)
+{
+}
+
+static inline
+void hdd_sysfs_pktlog_destroy(struct kobject *driver_kobject)
+{
+}
+#endif
+#endif

core/hdd/src/wlan_hdd_sysfs.c

@@ -71,6 +71,7 @@
 #include <wlan_hdd_sysfs_thermal_cfg.h>
 #include <wlan_hdd_sysfs_motion_detection.h>
 #include <wlan_hdd_sysfs_ipa.h>
+#include <wlan_hdd_sysfs_pkt_log.h>
 
 #define MAX_PSOC_ID_SIZE 10
 
@@ -771,12 +772,14 @@ void hdd_create_sysfs_files(struct hdd_context *hdd_ctx)
 		hdd_sysfs_set_scan_cfg_create(driver_kobject);
 		hdd_sysfs_dp_trace_create(driver_kobject);
 		hdd_sysfs_thermal_cfg_create(driver_kobject);
+		hdd_sysfs_pktlog_create(driver_kobject);
 	}
 }
 
 void hdd_destroy_sysfs_files(void)
 {
 	if  (QDF_GLOBAL_MISSION_MODE == hdd_get_conparam()) {
+		hdd_sysfs_pktlog_destroy(driver_kobject);
 		hdd_sysfs_thermal_cfg_destroy(driver_kobject);
 		hdd_sysfs_dp_trace_destroy(driver_kobject);
 		hdd_sysfs_set_scan_cfg_destroy(driver_kobject);

core/hdd/src/wlan_hdd_sysfs_pktlog.c

@@ -0,0 +1,100 @@
+/*
+ * 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.
+ */
+
+#include <wlan_hdd_main.h>
+#include <wlan_hdd_sysfs.h>
+#include <wlan_hdd_sysfs_pkt_log.h>
+#include "osif_sync.h"
+
+#define MAX_USER_COMMAND_SIZE_PKT_LOG_CMD 4
+
+static ssize_t __hdd_sysfs_pkt_log_cmd_store(struct hdd_context *hdd_ctx,
+					     const char *buf, size_t count)
+{
+	char buf_local[MAX_USER_COMMAND_SIZE_PKT_LOG_CMD + 1];
+	char *sptr, *token;
+	uint32_t val1, val2;
+	int ret;
+
+	hdd_enter();
+
+	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)
+		return -EINVAL;
+
+	sptr = buf_local;
+	/* Get val1 */
+	token = strsep(&sptr, " ");
+	if (!token)
+		return -EINVAL;
+	if (kstrtou32(token, 0, &val1))
+		return -EINVAL;
+
+	sptr = buf_local;
+	/* Get val2 */
+	token = strsep(&sptr, " ");
+	if (!token)
+		return -EINVAL;
+	if (kstrtou32(token, 0, &val2))
+		return -EINVAL;
+
+	ret = hdd_process_pktlog_command(hdd_ctx, val1, val2);
+
+	hdd_exit();
+	return count;
+}
+
+static ssize_t hdd_sysfs_pkt_log_cmd_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 err_size;
+
+	if (wlan_hdd_validate_context(hdd_ctx))
+		return 0;
+
+	err_size = osif_psoc_sync_op_start(wiphy_dev(hdd_ctx->wiphy),
+					   &psoc_sync);
+	if (err_size)
+		return err_size;
+
+	err_size = __hdd_sysfs_pkt_log_cmd_store(hdd_ctx, buf, count);
+
+	osif_psoc_sync_op_stop(psoc_sync);
+	return err_size;
+}
+
+static struct kobj_attribute pktlog_attribute =
+	__ATTR(pktlog, 0220, NULL,
+	       hdd_sysfs_pkt_log_cmd_store);
+
+void hdd_sysfs_pktlog_create(struct kobject *driver_kobject)
+{
+	if (sysfs_create_file(driver_kobject, &pktlog_attribute.attr))
+		hdd_err("Failed to create pktlog sysfs entry");
+}
+
+void hdd_sysfs_pktlog_destroy(struct kobject *driver_kobject)
+{
+	sysfs_remove_file(driver_kobject, &pktlog_attribute.attr);
+}