path: root/net/mac80211/debugfs_netdev.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2006	Jiri Benc <jbenc@suse.cz>
 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
 * Copyright (C) 2020-2023 Intel Corporation
 */

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/rtnetlink.h>
#include <linux/slab.h>
#include <linux/notifier.h>
#include <net/mac80211.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "rate.h"
#include "debugfs.h"
#include "debugfs_netdev.h"
#include "driver-ops.h"

struct ieee80211_if_read_sdata_data {
	ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int);
	struct ieee80211_sub_if_data *sdata;
};

static ssize_t ieee80211_if_read_sdata_handler(struct wiphy *wiphy,
					       struct file *file,
					       char *buf,
					       size_t bufsize,
					       void *data)
{
	struct ieee80211_if_read_sdata_data *d = data;

	return d->format(d->sdata, buf, bufsize);
}

static ssize_t ieee80211_if_read_sdata(
	struct file *file,
	char __user *userbuf,
	size_t count, loff_t *ppos,
	ssize_t (*format)(const struct ieee80211_sub_if_data *sdata, char *, int))
{
	struct ieee80211_sub_if_data *sdata = file->private_data;
	struct ieee80211_if_read_sdata_data data = {
		.format = format,
		.sdata = sdata,
	};
	char buf[200];

	return wiphy_locked_debugfs_read(sdata->local->hw.wiphy,
					 file, buf, sizeof(buf),
					 userbuf, count, ppos,
					 ieee80211_if_read_sdata_handler,
					 &data);
}

struct ieee80211_if_write_sdata_data {
	ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int);
	struct ieee80211_sub_if_data *sdata;
};

static ssize_t ieee80211_if_write_sdata_handler(struct wiphy *wiphy,
						struct file *file,
						char *buf,
						size_t count,
						void *data)
{
	struct ieee80211_if_write_sdata_data *d = data;

	return d->write(d->sdata, buf, count);
}

static ssize_t ieee80211_if_write_sdata(
	struct file *file,
	const char __user *userbuf,
	size_t count, loff_t *ppos,
	ssize_t (*write)(struct ieee80211_sub_if_data *sdata, const char *, int))
{
	struct ieee80211_sub_if_data *sdata = file->private_data;
	struct ieee80211_if_write_sdata_data data = {
		.write = write,
		.sdata = sdata,
	};
	char buf[64];

	return wiphy_locked_debugfs_write(sdata->local->hw.wiphy,
					  file, buf, sizeof(buf),
					  userbuf, count,
					  ieee80211_if_write_sdata_handler,
					  &data);
}

struct ieee80211_if_read_link_data {
	ssize_t (*format)(const struct ieee80211_link_data *, char *, int);
	struct ieee80211_link_data *link;
};

static ssize_t ieee80211_if_read_link_handler(struct wiphy *wiphy,
					      struct file *file,
					      char *buf,
					      size_t bufsize,
					      void *data)
{
	struct ieee80211_if_read_link_data *d = data;

	return d->format(d->link, buf, bufsize);
}

static ssize_t ieee80211_if_read_link(
	struct file *file,
	char __user *userbuf,
	size_t count, loff_t *ppos,
	ssize_t (*format)(const struct ieee80211_link_data *link, char *, int))
{
	struct ieee80211_link_data *link = file->private_data;
	struct ieee80211_if_read_link_data data = {
		.format = format,
		.link = link,
	};
	char buf[200];

	return wiphy_locked_debugfs_read(link->sdata->local->hw.wiphy,
					 file, buf, sizeof(buf),
					 userbuf, count, ppos,
					 ieee80211_if_read_link_handler,
					 &data);
}

struct ieee80211_if_write_link_data {
	ssize_t (*write)(struct ieee80211_link_data *, const char *, int);
	struct ieee80211_link_data *link;
};

static ssize_t ieee80211_if_write_link_handler(struct wiphy *wiphy,
					       struct file *file,
					       char *buf,
					       size_t count,
					       void *data)
{
	struct ieee80211_if_write_sdata_data *d = data;

	return d->write(d->sdata, buf, count);
}

static ssize_t ieee80211_if_write_link(
	struct file *file,
	const