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kernel_optimize_test/net/mac80211/debugfs.c
Johannes Berg 75636525fb mac80211: revamp virtual interface handling 
This patch revamps the virtual interface handling and makes the
code much easier to follow. Fewer functions, better names, less
spaghetti code.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-07-14 14:30:07 -04:00

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/*
* mac80211 debugfs for wireless PHYs
*
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
*
* GPLv2
*
*/
#include <linux/debugfs.h>
#include <linux/rtnetlink.h>
#include "ieee80211_i.h"
#include "rate.h"
#include "debugfs.h"
int mac80211_open_file_generic(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
#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 ieee80211_local *local = 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 = mac80211_open_file_generic, \
};
#define DEBUGFS_ADD(name) \
local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \
local, &name## _ops);
#define DEBUGFS_DEL(name) \
debugfs_remove(local->debugfs.name); \
local->debugfs.name = NULL;
DEBUGFS_READONLY_FILE(frequency, 20, "%d",
local->hw.conf.channel->center_freq);
DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d",
local->hw.conf.antenna_sel_tx);
DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d",
local->hw.conf.antenna_sel_rx);
DEBUGFS_READONLY_FILE(bridge_packets, 20, "%d",
local->bridge_packets);
DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
local->rts_threshold);
DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
local->fragmentation_threshold);
DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
local->short_retry_limit);
DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
local->long_retry_limit);
DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
local->total_ps_buffered);
DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x",
local->wep_iv & 0xffffff);
DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>");
/* statistics stuff */
#define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
static ssize_t format_devstat_counter(struct ieee80211_local *local,
char __user *userbuf,
size_t count, loff_t *ppos,
int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
int buflen))
{
struct ieee80211_low_level_stats stats;
char buf[20];
int res;
if (!local->ops->get_stats)
return -EOPNOTSUPP;
rtnl_lock();
res = local->ops->get_stats(local_to_hw(local), &stats);
rtnl_unlock();
if (!res)
res = printvalue(&stats, buf, sizeof(buf));
return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
#define DEBUGFS_DEVSTATS_FILE(name) \
static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
char *buf, int buflen) \
{ \
return scnprintf(buf, buflen, "%u\n", stats->name); \
} \
static ssize_t stats_ ##name## _read(struct file *file, \
char __user *userbuf, \
size_t count, loff_t *ppos) \
{ \
return format_devstat_counter(file->private_data, \
userbuf, \
count, \
ppos, \
print_devstats_##name); \
} \
\
static const struct file_operations stats_ ##name## _ops = { \
.read = stats_ ##name## _read, \
.open = mac80211_open_file_generic, \
};
#define DEBUGFS_STATS_ADD(name) \
local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\
local, &stats_ ##name## _ops);
#define DEBUGFS_STATS_DEL(name) \
debugfs_remove(local->debugfs.stats.name); \
local->debugfs.stats.name = NULL;
DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
local->dot11TransmittedFragmentCount);
DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
local->dot11MulticastTransmittedFrameCount);
DEBUGFS_STATS_FILE(failed_count, 20, "%u",
local->dot11FailedCount);
DEBUGFS_STATS_FILE(retry_count, 20, "%u",
local->dot11RetryCount);
DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
local->dot11MultipleRetryCount);
DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
local->dot11FrameDuplicateCount);
DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
local->dot11ReceivedFragmentCount);
DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
local->dot11MulticastReceivedFrameCount);
DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
local->dot11TransmittedFrameCount);
DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u",
local->dot11WEPUndecryptableCount);
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
local->tx_handlers_drop);
DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
local->tx_handlers_queued);
DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
local->tx_handlers_drop_unencrypted);
DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
local->tx_handlers_drop_fragment);
DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
local->tx_handlers_drop_wep);
DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
local->tx_handlers_drop_not_assoc);
DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
local->tx_handlers_drop_unauth_port);
DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
local->rx_handlers_drop);
DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
local->rx_handlers_queued);
DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
local->rx_handlers_drop_nullfunc);
DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
local->rx_handlers_drop_defrag);
DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
local->rx_handlers_drop_short);
DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
local->rx_handlers_drop_passive_scan);
DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
local->tx_expand_skb_head);
DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
local->tx_expand_skb_head_cloned);
DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
local->rx_expand_skb_head);
DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
local->rx_expand_skb_head2);
DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
local->rx_handlers_fragments);
DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
local->tx_status_drop);
#endif
DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
void debugfs_hw_add(struct ieee80211_local *local)
{
struct dentry *phyd = local->hw.wiphy->debugfsdir;
struct dentry *statsd;
if (!phyd)
return;
local->debugfs.stations = debugfs_create_dir("stations", phyd);
local->debugfs.keys = debugfs_create_dir("keys", phyd);
DEBUGFS_ADD(frequency);
DEBUGFS_ADD(antenna_sel_tx);
DEBUGFS_ADD(antenna_sel_rx);
DEBUGFS_ADD(bridge_packets);
DEBUGFS_ADD(rts_threshold);
DEBUGFS_ADD(fragmentation_threshold);
DEBUGFS_ADD(short_retry_limit);
DEBUGFS_ADD(long_retry_limit);
DEBUGFS_ADD(total_ps_buffered);
DEBUGFS_ADD(wep_iv);
statsd = debugfs_create_dir("statistics", phyd);
local->debugfs.statistics = statsd;
/* if the dir failed, don't put all the other things into the root! */
if (!statsd)
return;
DEBUGFS_STATS_ADD(transmitted_fragment_count);
DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
DEBUGFS_STATS_ADD(failed_count);
DEBUGFS_STATS_ADD(retry_count);
DEBUGFS_STATS_ADD(multiple_retry_count);
DEBUGFS_STATS_ADD(frame_duplicate_count);
DEBUGFS_STATS_ADD(received_fragment_count);
DEBUGFS_STATS_ADD(multicast_received_frame_count);
DEBUGFS_STATS_ADD(transmitted_frame_count);
DEBUGFS_STATS_ADD(wep_undecryptable_count);
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
DEBUGFS_STATS_ADD(tx_handlers_drop);
DEBUGFS_STATS_ADD(tx_handlers_queued);
DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
DEBUGFS_STATS_ADD(rx_handlers_drop);
DEBUGFS_STATS_ADD(rx_handlers_queued);
DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
DEBUGFS_STATS_ADD(rx_handlers_drop_short);
DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
DEBUGFS_STATS_ADD(tx_expand_skb_head);
DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
DEBUGFS_STATS_ADD(rx_expand_skb_head);
DEBUGFS_STATS_ADD(rx_expand_skb_head2);
DEBUGFS_STATS_ADD(rx_handlers_fragments);
DEBUGFS_STATS_ADD(tx_status_drop);
#endif
DEBUGFS_STATS_ADD(dot11ACKFailureCount);
DEBUGFS_STATS_ADD(dot11RTSFailureCount);
DEBUGFS_STATS_ADD(dot11FCSErrorCount);
DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
}
void debugfs_hw_del(struct ieee80211_local *local)
{
DEBUGFS_DEL(frequency);
DEBUGFS_DEL(antenna_sel_tx);
DEBUGFS_DEL(antenna_sel_rx);
DEBUGFS_DEL(bridge_packets);
DEBUGFS_DEL(rts_threshold);
DEBUGFS_DEL(fragmentation_threshold);
DEBUGFS_DEL(short_retry_limit);
DEBUGFS_DEL(long_retry_limit);
DEBUGFS_DEL(total_ps_buffered);
DEBUGFS_DEL(wep_iv);
DEBUGFS_STATS_DEL(transmitted_fragment_count);
DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
DEBUGFS_STATS_DEL(failed_count);
DEBUGFS_STATS_DEL(retry_count);
DEBUGFS_STATS_DEL(multiple_retry_count);
DEBUGFS_STATS_DEL(frame_duplicate_count);
DEBUGFS_STATS_DEL(received_fragment_count);
DEBUGFS_STATS_DEL(multicast_received_frame_count);
DEBUGFS_STATS_DEL(transmitted_frame_count);
DEBUGFS_STATS_DEL(wep_undecryptable_count);
DEBUGFS_STATS_DEL(num_scans);
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
DEBUGFS_STATS_DEL(tx_handlers_drop);
DEBUGFS_STATS_DEL(tx_handlers_queued);
DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted);
DEBUGFS_STATS_DEL(tx_handlers_drop_fragment);
DEBUGFS_STATS_DEL(tx_handlers_drop_wep);
DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc);
DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port);
DEBUGFS_STATS_DEL(rx_handlers_drop);
DEBUGFS_STATS_DEL(rx_handlers_queued);
DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc);
DEBUGFS_STATS_DEL(rx_handlers_drop_defrag);
DEBUGFS_STATS_DEL(rx_handlers_drop_short);
DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan);
DEBUGFS_STATS_DEL(tx_expand_skb_head);
DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned);
DEBUGFS_STATS_DEL(rx_expand_skb_head);
DEBUGFS_STATS_DEL(rx_expand_skb_head2);
DEBUGFS_STATS_DEL(rx_handlers_fragments);
DEBUGFS_STATS_DEL(tx_status_drop);
#endif
DEBUGFS_STATS_DEL(dot11ACKFailureCount);
DEBUGFS_STATS_DEL(dot11RTSFailureCount);
DEBUGFS_STATS_DEL(dot11FCSErrorCount);
DEBUGFS_STATS_DEL(dot11RTSSuccessCount);
debugfs_remove(local->debugfs.statistics);
local->debugfs.statistics = NULL;
debugfs_remove(local->debugfs.stations);
local->debugfs.stations = NULL;
debugfs_remove(local->debugfs.keys);
local->debugfs.keys = NULL;
}
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