linux-imx

/*

 * cfg80211 debugfs

 *

 * Copyright 2009   Luis R. Rodriguez <lrodriguez@atheros.com>

 * Copyright 2007   Johannes Berg <johannes@sipsolutions.net>

 *

 * 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.

 */

​

#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) ?

                ' ' : '+');

}