mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* cfg80211 debugfs
|
|
*
|
|
* Copyright 2009 Luis R. Rodriguez <lrodriguez@atheros.com>
|
|
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include "core.h"
|
|
#include "debugfs.h"
|
|
|
|
#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
|
|
static ssize_t name## _read(struct file *file, char __user *userbuf, \
|
|
size_t count, loff_t *ppos) \
|
|
{ \
|
|
struct wiphy *wiphy = file->private_data; \
|
|
char buf[buflen]; \
|
|
int res; \
|
|
\
|
|
res = scnprintf(buf, buflen, fmt "\n", ##value); \
|
|
return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
|
|
} \
|
|
\
|
|
static const struct file_operations name## _ops = { \
|
|
.read = name## _read, \
|
|
.open = simple_open, \
|
|
.llseek = generic_file_llseek, \
|
|
}
|
|
|
|
DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
|
|
wiphy->rts_threshold);
|
|
DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
|
|
wiphy->frag_threshold);
|
|
DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
|
|
wiphy->retry_short);
|
|
DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
|
|
wiphy->retry_long);
|
|
|
|
static int ht_print_chan(struct ieee80211_channel *chan,
|
|
char *buf, int buf_size, int offset)
|
|
{
|
|
if (WARN_ON(offset > buf_size))
|
|
return 0;
|
|
|
|
if (chan->flags & IEEE80211_CHAN_DISABLED)
|
|
return scnprintf(buf + offset,
|
|
buf_size - offset,
|
|
"%d Disabled\n",
|
|
chan->center_freq);
|
|
|
|
return scnprintf(buf + offset,
|
|
buf_size - offset,
|
|
"%d HT40 %c%c\n",
|
|
chan->center_freq,
|
|
(chan->flags & IEEE80211_CHAN_NO_HT40MINUS) ?
|
|
' ' : '-',
|
|
(chan->flags & IEEE80211_CHAN_NO_HT40PLUS) ?
|
|
' ' : '+');
|
|
}
|
|
|
|
static ssize_t ht40allow_map_read(struct file *file,
|
|
char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct wiphy *wiphy = file->private_data;
|
|
char *buf;
|
|
unsigned int offset = 0, buf_size = PAGE_SIZE, i, r;
|
|
enum nl80211_band band;
|
|
struct ieee80211_supported_band *sband;
|
|
|
|
buf = kzalloc(buf_size, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
rtnl_lock();
|
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) {
|
|
sband = wiphy->bands[band];
|
|
if (!sband)
|
|
continue;
|
|
for (i = 0; i < sband->n_channels; i++)
|
|
offset += ht_print_chan(&sband->channels[i],
|
|
buf, buf_size, offset);
|
|
}
|
|
|
|
rtnl_unlock();
|
|
|
|
r = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
|
|
|
|
kfree(buf);
|
|
|
|
return r;
|
|
}
|
|
|
|
static const struct file_operations ht40allow_map_ops = {
|
|
.read = ht40allow_map_read,
|
|
.open = simple_open,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
#define DEBUGFS_ADD(name) \
|
|
debugfs_create_file(#name, 0444, phyd, &rdev->wiphy, &name## _ops)
|
|
|
|
void cfg80211_debugfs_rdev_add(struct cfg80211_registered_device *rdev)
|
|
{
|
|
struct dentry *phyd = rdev->wiphy.debugfsdir;
|
|
|
|
DEBUGFS_ADD(rts_threshold);
|
|
DEBUGFS_ADD(fragmentation_threshold);
|
|
DEBUGFS_ADD(short_retry_limit);
|
|
DEBUGFS_ADD(long_retry_limit);
|
|
DEBUGFS_ADD(ht40allow_map);
|
|
}
|