qcacld-3.0: Add sysfs entry for the ipaucstat

Add the sysfs entry for the ipaucstat.

Previously ipaucstat would be queried via iwpriv
--> iwpriv wlan0 ipaucstat 1

it is now changed to support via sysfs:
--> echo "1" > /sys/class/net/wlanxx/ipaucstat

Change-Id: I5a3195a36cd2d7252eb3ef0312545d338b40d3ec
CRs-Fixed: 2676440

Kbuild

@@ -355,6 +355,9 @@ endif
 ifeq ($(CONFIG_WLAN_GTX_BW_MASK), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_gtx_bw_mask.o
 endif
+ifeq ($(CONFIG_IPA_OFFLOAD), y)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_ipa.o
+endif
 endif
 
 ifeq ($(CONFIG_QCACLD_FEATURE_FW_STATE), y)

core/hdd/inc/wlan_hdd_sysfs_ipa.h

@@ -0,0 +1,58 @@
+/*
+ * 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_IPA_H
+#define WLAN_HDD_SYSFS_IPA_H
+
+#if defined(WLAN_SYSFS) && defined(IPA_OFFLOAD)
+
+enum ipa_debug_cmd {
+	IPA_UC_STAT = 1,
+	IPA_UC_INFO,
+	IPA_UC_RT_DEBUG_HOST_DUMP,
+	IPA_DUMP_INFO,
+};
+
+/**
+ * hdd_sysfs_ipa_create(): Initialize ipa specific sysfs file
+ * @adapter: os if adapter
+ *
+ * Function to initialize ipa specific mode syfs files.
+ *
+ * Return: NONE
+ */
+void hdd_sysfs_ipa_create(struct hdd_adapter *adapter);
+
+/**
+ * hdd_sysfs_ipa_destroy(): Remove ipucstat specific sysfs file
+ * @adapter: os if adapter
+ *
+ * Function to remove ipa specific mode syfs files.
+ *
+ * Return: NONE
+ */
+void hdd_sysfs_ipa_destroy(struct hdd_adapter *adapter);
+#else
+static inline
+void hdd_sysfs_ipa_create(struct hdd_adapter *adapter)
+{
+}
+
+static inline
+void hdd_sysfs_ipa_destroy(struct hdd_adapter *adapter)
+{
+}
+#endif
+#endif

core/hdd/src/wlan_hdd_sysfs.c

@@ -70,6 +70,7 @@
 #include <wlan_hdd_sysfs_get_temp.h>
 #include <wlan_hdd_sysfs_thermal_cfg.h>
 #include <wlan_hdd_sysfs_motion_detection.h>
+#include <wlan_hdd_sysfs_ipa.h>
 
 #define MAX_PSOC_ID_SIZE 10
 
@@ -716,11 +717,13 @@ hdd_sysfs_create_sap_adapter_root_obj(struct hdd_adapter *adapter)
 	hdd_sysfs_txrx_stats_create(adapter);
 	hdd_sysfs_get_temp_create(adapter);
 	hdd_sysfs_range_ext_create(adapter);
+	hdd_sysfs_ipa_create(adapter);
 }
 
 static void
 hdd_sysfs_destroy_sap_adapter_root_obj(struct hdd_adapter *adapter)
 {
+	hdd_sysfs_ipa_destroy(adapter);
 	hdd_sysfs_range_ext_destroy(adapter);
 	hdd_sysfs_get_temp_destroy(adapter);
 	hdd_sysfs_txrx_stats_destroy(adapter);

core/hdd/src/wlan_hdd_sysfs_ipa.c

@@ -0,0 +1,124 @@
+/*
+ * 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_ipa.h>
+#include <wlan_ipa_ucfg_api.h>
+#include <wlan_hdd_sysfs.h>
+#include "osif_sync.h"
+
+#define MAX_USER_COMMAND_SIZE_IPAUCSTAT 4
+
+static ssize_t __hdd_sysfs_ipaucstate_store(struct net_device *net_dev,
+					    const char __user *buf,
+					    size_t count)
+{
+	struct hdd_adapter *adapter = WLAN_HDD_GET_PRIV_PTR(net_dev);
+	struct hdd_context *hdd_ctx;
+	uint8_t cmd[MAX_USER_COMMAND_SIZE_IPAUCSTAT] = {0};
+	int ret;
+	char *sptr, *token;
+	uint8_t set_value = 0;
+
+	hdd_enter();
+
+	if (hdd_validate_adapter(adapter))
+		return -EINVAL;
+
+	hdd_ctx = WLAN_HDD_GET_CTX(adapter);
+	ret = wlan_hdd_validate_context(hdd_ctx);
+	if (ret)
+		return ret;
+
+	if (!wlan_hdd_validate_modules_state(hdd_ctx))
+		return -EINVAL;
+
+	if (!ucfg_ipa_is_enabled())
+		return -EINVAL;
+
+	if (adapter->device_mode != QDF_SAP_MODE)
+		return -EINVAL;
+
+	ret = hdd_sysfs_validate_and_copy_buf(cmd, sizeof(cmd),
+					      buf, count);
+	if (ret) {
+		hdd_err_rl("invalid input");
+		return ret;
+	}
+
+	sptr = cmd;
+	/* Get set_value */
+	token = strsep(&sptr, " ");
+	if (!token)
+		return -EINVAL;
+	if (kstrtou8(token, 0, &set_value))
+		return -EINVAL;
+
+	/* If input value is non-zero get stats */
+	switch (set_value) {
+	case IPA_UC_STAT:
+		ucfg_ipa_uc_stat(hdd_ctx->pdev);
+		break;
+	case IPA_UC_INFO:
+		ucfg_ipa_uc_info(hdd_ctx->pdev);
+		break;
+	case IPA_UC_RT_DEBUG_HOST_DUMP:
+		ucfg_ipa_uc_rt_debug_host_dump(hdd_ctx->pdev);
+		break;
+	case IPA_DUMP_INFO:
+		ucfg_ipa_dump_info(hdd_ctx->pdev);
+		break;
+	default:
+		/* place holder for stats clean up
+		 * Stats clean not implemented yet on FW and IPA
+		 */
+		break;
+	}
+	hdd_exit();
+	return count;
+}
+
+static ssize_t hdd_sysfs_ipaucstate_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 err_size;
+
+	err_size = osif_vdev_sync_op_start(net_dev, &vdev_sync);
+	if (err_size)
+		return err_size;
+
+	err_size = __hdd_sysfs_ipaucstate_store(net_dev, buf, count);
+
+	osif_vdev_sync_op_stop(vdev_sync);
+	return err_size;
+}
+
+static DEVICE_ATTR(ipaucstat, 0220,
+		   NULL, hdd_sysfs_ipaucstate_store);
+
+void hdd_sysfs_ipa_create(struct hdd_adapter *adapter)
+{
+	if (device_create_file(&adapter->dev->dev, &dev_attr_ipaucstat))
+		hdd_err("could not create wlan sysfs file");
+}
+
+void hdd_sysfs_ipa_destroy(struct hdd_adapter *adapter)
+{
+	device_remove_file(&adapter->dev->dev, &dev_attr_ipaucstat);
+}