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ceph: fix use-after-free on symlink traversal
[uclinux-h8/linux.git] / drivers / net / wireless / mediatek / mt76 / mt76x02_debugfs.c
1 /*
2  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16
17 #include <linux/debugfs.h>
18 #include "mt76x02.h"
19
20 static int
21 mt76x02_ampdu_stat_read(struct seq_file *file, void *data)
22 {
23         struct mt76x02_dev *dev = file->private;
24         int i, j;
25
26         for (i = 0; i < 4; i++) {
27                 seq_puts(file, "Length: ");
28                 for (j = 0; j < 8; j++)
29                         seq_printf(file, "%8d | ", i * 8 + j + 1);
30                 seq_puts(file, "\n");
31                 seq_puts(file, "Count:  ");
32                 for (j = 0; j < 8; j++)
33                         seq_printf(file, "%8d | ", dev->aggr_stats[i * 8 + j]);
34                 seq_puts(file, "\n");
35                 seq_puts(file, "--------");
36                 for (j = 0; j < 8; j++)
37                         seq_puts(file, "-----------");
38                 seq_puts(file, "\n");
39         }
40
41         return 0;
42 }
43
44 static int
45 mt76x02_ampdu_stat_open(struct inode *inode, struct file *f)
46 {
47         return single_open(f, mt76x02_ampdu_stat_read, inode->i_private);
48 }
49
50 static int read_txpower(struct seq_file *file, void *data)
51 {
52         struct mt76x02_dev *dev = dev_get_drvdata(file->private);
53
54         seq_printf(file, "Target power: %d\n", dev->target_power);
55
56         mt76_seq_puts_array(file, "Delta", dev->target_power_delta,
57                             ARRAY_SIZE(dev->target_power_delta));
58         return 0;
59 }
60
61 static const struct file_operations fops_ampdu_stat = {
62         .open = mt76x02_ampdu_stat_open,
63         .read = seq_read,
64         .llseek = seq_lseek,
65         .release = single_release,
66 };
67
68 static int
69 mt76x02_dfs_stat_read(struct seq_file *file, void *data)
70 {
71         struct mt76x02_dev *dev = file->private;
72         struct mt76x02_dfs_pattern_detector *dfs_pd = &dev->dfs_pd;
73         int i;
74
75         seq_printf(file, "allocated sequences:\t%d\n",
76                    dfs_pd->seq_stats.seq_pool_len);
77         seq_printf(file, "used sequences:\t\t%d\n",
78                    dfs_pd->seq_stats.seq_len);
79         seq_puts(file, "\n");
80
81         for (i = 0; i < MT_DFS_NUM_ENGINES; i++) {
82                 seq_printf(file, "engine: %d\n", i);
83                 seq_printf(file, "  hw pattern detected:\t%d\n",
84                            dfs_pd->stats[i].hw_pattern);
85                 seq_printf(file, "  hw pulse discarded:\t%d\n",
86                            dfs_pd->stats[i].hw_pulse_discarded);
87                 seq_printf(file, "  sw pattern detected:\t%d\n",
88                            dfs_pd->stats[i].sw_pattern);
89         }
90
91         return 0;
92 }
93
94 static int
95 mt76x02_dfs_stat_open(struct inode *inode, struct file *f)
96 {
97         return single_open(f, mt76x02_dfs_stat_read, inode->i_private);
98 }
99
100 static const struct file_operations fops_dfs_stat = {
101         .open = mt76x02_dfs_stat_open,
102         .read = seq_read,
103         .llseek = seq_lseek,
104         .release = single_release,
105 };
106
107 static int read_agc(struct seq_file *file, void *data)
108 {
109         struct mt76x02_dev *dev = dev_get_drvdata(file->private);
110
111         seq_printf(file, "avg_rssi: %d\n", dev->cal.avg_rssi_all);
112         seq_printf(file, "low_gain: %d\n", dev->cal.low_gain);
113         seq_printf(file, "false_cca: %d\n", dev->cal.false_cca);
114         seq_printf(file, "agc_gain_adjust: %d\n", dev->cal.agc_gain_adjust);
115
116         return 0;
117 }
118
119 void mt76x02_init_debugfs(struct mt76x02_dev *dev)
120 {
121         struct dentry *dir;
122
123         dir = mt76_register_debugfs(&dev->mt76);
124         if (!dir)
125                 return;
126
127         debugfs_create_u8("temperature", 0400, dir, &dev->cal.temp);
128         debugfs_create_bool("tpc", 0600, dir, &dev->enable_tpc);
129
130         debugfs_create_file("ampdu_stat", 0400, dir, dev, &fops_ampdu_stat);
131         debugfs_create_file("dfs_stats", 0400, dir, dev, &fops_dfs_stat);
132         debugfs_create_devm_seqfile(dev->mt76.dev, "txpower", dir,
133                                     read_txpower);
134
135         debugfs_create_devm_seqfile(dev->mt76.dev, "agc", dir, read_agc);
136
137         debugfs_create_u32("tx_hang_reset", 0400, dir, &dev->tx_hang_reset);
138 }
139 EXPORT_SYMBOL_GPL(mt76x02_init_debugfs);