80a3511d70
Here's a screenshot of what this looks like with ath9k: mcgrof@pogo /debug/ieee80211/phy0 $ cat ht40allow_map 2412 HT40 + 2417 HT40 + 2422 HT40 + 2427 HT40 + 2432 HT40 -+ 2437 HT40 -+ 2442 HT40 -+ 2447 HT40 - 2452 HT40 - 2457 HT40 - 2462 HT40 - 2467 Disabled 2472 Disabled 2484 Disabled 5180 HT40 + 5200 HT40 -+ 5220 HT40 -+ 5240 HT40 -+ 5260 HT40 -+ 5280 HT40 -+ 5300 HT40 -+ 5320 HT40 - 5500 HT40 + 5520 HT40 -+ 5540 HT40 -+ 5560 HT40 -+ 5580 HT40 -+ 5600 HT40 -+ 5620 HT40 -+ 5640 HT40 -+ 5660 HT40 -+ 5680 HT40 -+ 5700 HT40 - 5745 HT40 + 5765 HT40 -+ 5785 HT40 -+ 5805 HT40 -+ 5825 HT40 - Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/*
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* cfg80211 debugfs
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*
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* Copyright 2009 Luis R. Rodriguez <lrodriguez@atheros.com>
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* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "core.h"
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#include "debugfs.h"
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static int cfg80211_open_file_generic(struct inode *inode, struct file *file)
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{
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file->private_data = inode->i_private;
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return 0;
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}
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#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
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static ssize_t name## _read(struct file *file, char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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struct wiphy *wiphy= file->private_data; \
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char buf[buflen]; \
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int res; \
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\
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res = scnprintf(buf, buflen, fmt "\n", ##value); \
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return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
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} \
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\
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static const struct file_operations name## _ops = { \
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.read = name## _read, \
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.open = cfg80211_open_file_generic, \
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};
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DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
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wiphy->rts_threshold)
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DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
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wiphy->frag_threshold);
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DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
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wiphy->retry_short)
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DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
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wiphy->retry_long);
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static int ht_print_chan(struct ieee80211_channel *chan,
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char *buf, int buf_size, int offset)
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{
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if (WARN_ON(offset > buf_size))
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return 0;
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if (chan->flags & IEEE80211_CHAN_DISABLED)
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return snprintf(buf + offset,
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buf_size - offset,
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"%d Disabled\n",
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chan->center_freq);
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return snprintf(buf + offset,
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buf_size - offset,
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"%d HT40 %c%c\n",
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chan->center_freq,
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(chan->flags & IEEE80211_CHAN_NO_HT40MINUS) ? ' ' : '-',
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(chan->flags & IEEE80211_CHAN_NO_HT40PLUS) ? ' ' : '+');
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}
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static ssize_t ht40allow_map_read(struct file *file,
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char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct wiphy *wiphy = file->private_data;
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char *buf;
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unsigned int offset = 0, buf_size = PAGE_SIZE, i, r;
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enum ieee80211_band band;
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struct ieee80211_supported_band *sband;
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buf = kzalloc(buf_size, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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mutex_lock(&cfg80211_mutex);
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for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
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sband = wiphy->bands[band];
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if (!sband)
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continue;
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for (i = 0; i < sband->n_channels; i++)
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offset += ht_print_chan(&sband->channels[i],
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buf, buf_size, offset);
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}
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mutex_unlock(&cfg80211_mutex);
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r = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
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kfree(buf);
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return r;
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}
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static const struct file_operations ht40allow_map_ops = {
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.read = ht40allow_map_read,
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.open = cfg80211_open_file_generic,
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};
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#define DEBUGFS_ADD(name) \
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drv->debugfs.name = debugfs_create_file(#name, S_IRUGO, phyd, \
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&drv->wiphy, &name## _ops);
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#define DEBUGFS_DEL(name) \
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debugfs_remove(drv->debugfs.name); \
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drv->debugfs.name = NULL;
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void cfg80211_debugfs_drv_add(struct cfg80211_registered_device *drv)
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{
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struct dentry *phyd = drv->wiphy.debugfsdir;
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DEBUGFS_ADD(rts_threshold);
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DEBUGFS_ADD(fragmentation_threshold);
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DEBUGFS_ADD(short_retry_limit);
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DEBUGFS_ADD(long_retry_limit);
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DEBUGFS_ADD(ht40allow_map);
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}
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void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv)
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{
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DEBUGFS_DEL(rts_threshold);
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DEBUGFS_DEL(fragmentation_threshold);
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DEBUGFS_DEL(short_retry_limit);
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DEBUGFS_DEL(long_retry_limit);
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DEBUGFS_DEL(ht40allow_map);
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}
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