/*
 * 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) ?
				' ' : '+');
}

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, S_IRUGO, 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);
}
s='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include?h=nds-private-remove&amp;id=fc6f41ba8b2e705f91324db158c3cc28209a15b1&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-09 13:22:54 -0800'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=55aac6ef53e114c28170ee3f79065cfa8ca9cf3f'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-08 15:41:43 -0800'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=4d59b6ccf000862beed6fc0765d3209f98a8d8a2'>cpumask: use nr_cpumask_bits for parsing functions</a></td><td>Tejun Heo</td><td>1</td><td><span class='deletions'>-4</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-08 15:41:43 -0800'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=0911d0041c22922228ca52a977d7b0b0159fee4b'>mm: avoid returning VM_FAULT_RETRY from -&gt;page_mkwrite handlers</a></td><td>Jan Kara</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-08 08:25:23 -0800'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=01d4d673558985d9a118e1e05026633c3e2ade9b'>target: Fix multi-session dynamic se_node_acl double free OOPs</a></td><td>Nicholas Bellinger</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-07 12:10:57 -0800'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>Linus Torvalds</td><td>3</td><td><span class='deletions'>-7</span>/<span class='insertions'>+10</span></td></tr>
<tr><td><span title='2017-02-07 11:19:00 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=69629464e0b587f3711739b3aa2bcdaf2e075276'>udp: properly cope with csum errors</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-04 19:44:22 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=d71b7896886345c53ef1d84bda2bc758554f5d61'>netlabel: out of bound access in cipso_v4_validate()</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-04 12:18:01 -0800'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=a572a1b999489efb591287632279c6c9eca3e4ed'>Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/ker...</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+17</span></td></tr>
<tr><td><span title='2017-02-04 10:44:15 -0800'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=412e6d3fec247b2bc83106514b0fb3b17e2eb7fe'>Merge tag 'char-misc-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/g...</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+30</span></td></tr>
<tr><td><span title='2017-02-03 14:13:19 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=a96dfddbcc04336bbed50dc2b24823e45e09e80c'>base/memory, hotplug: fix a kernel oops in show_valid_zones()</a></td><td>Toshi Kani</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-03 11:32:25 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=79c9089f97d37ffac88c3ddb6d359b2cf75058b7'>Merge tag 'drm-fixes-for-v4.10-rc7' of git://people.freedesktop.org/~airlied/...</a></td><td>Linus Torvalds</td><td>2</td><td><span class='deletions'>-1</span>/<span class='insertions'>+16</span></td></tr>
<tr><td><span title='2017-02-03 10:30:27 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=2cb54ce9ee92ae627bc1cef8bea236905910a86d'>Merge branch 'modversions' (modversions fixes for powerpc from Ard)</a></td><td>Linus Torvalds</td><td>3</td><td><span class='deletions'>-17</span>/<span class='insertions'>+25</span></td></tr>
<tr><td><span title='2017-02-03 09:56:43 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=29905b52fad0854351f57bab867647e4982285bf'>log2: make order_base_2() behave correctly on const input value zero</a></td><td>Ard Biesheuvel</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+12</span></td></tr>
<tr><td><span title='2017-02-03 08:28:25 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=4b9eee96fcb361a5e16a8d2619825e8a048f81f7'>module: unify absolute krctab definitions for 32-bit and 64-bit</a></td><td>Ard Biesheuvel</td><td>1</td><td><span class='deletions'>-7</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-03 08:28:25 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=71810db27c1c853b335675bee335d893bc3d324b'>modversions: treat symbol CRCs as 32 bit quantities</a></td><td>Ard Biesheuvel</td><td>3</td><td><span class='deletions'>-12</span>/<span class='insertions'>+27</span></td></tr>
<tr><td><span title='2017-02-03 11:05:23 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=013e8167899d389075160412a8c0c5e0581e1f13'>ipv6: sr: remove cleanup flag and fix HMAC computation</a></td><td>David Lebrun</td><td>1</td><td><span class='deletions'>-6</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-02 13:30:19 -0800'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=891aa1e0f13c3aaa756c69b343d6ab6f3357009b'>Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/ke...</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-01 11:52:27 -0800'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=6d04dfc8966019b8b0977b2cb942351f13d2b178'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>Linus Torvalds</td><td>4</td><td><span class='deletions'>-19</span>/<span class='insertions'>+26</span></td></tr>
<tr><td><span title='2017-02-01 10:30:56 -0800'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=2883aaea363f7a897ff06d2e6c73ae7aae285bcb'>Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vir...</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-01 12:10:56 -0500'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=1a2a14444d32b89b28116daea86f63ced1716668'>net: fix ndo_features_check/ndo_fix_features comment ordering</a></td><td>Dimitris Michailidis</td><td>1</td><td><span class='deletions'>-14</span>/<span class='insertions'>+15</span></td></tr>
<tr><td><span title='2017-02-01 08:37:27 +0100'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=fff4b87e594ad3d2e4f51e8d3d86a6f9d3d8b654'>perf/x86/intel/uncore: Make package handling more robust</a></td><td>Thomas Gleixner</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+0</span></td></tr>