cregit-Linux how code gets into the kernel

Release 4.15 net/wireless/debugfs.c

Directory: net/wireless
/*
 * 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) ? ' ' : '+'); }

Contributors

PersonTokensPropCommitsCommitProp
Luis R. Rodriguez9998.02%150.00%
Eliad Peller21.98%150.00%
Total101100.00%2100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Luis R. Rodriguez16496.47%133.33%
Johannes Berg63.53%266.67%
Total170100.00%3100.00%

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); }

Contributors

PersonTokensPropCommitsCommitProp
Luis R. Rodriguez4393.48%266.67%
Johannes Berg36.52%133.33%
Total46100.00%3100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Luis R. Rodriguez39392.47%220.00%
Pichugin Dmitry122.82%110.00%
Johannes Berg92.12%330.00%
Arnd Bergmann51.18%110.00%
Tejun Heo30.71%110.00%
Eliad Peller20.47%110.00%
Stephen Boyd10.24%110.00%
Total425100.00%10100.00%
Directory: net/wireless
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