mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 23:06:44 +07:00
68920c9732
With upcoming CONFIG_UBSAN the following BUILD_BUG_ON in net/mac80211/debugfs.c starts to trigger: BUILD_BUG_ON(hw_flag_names[NUM_IEEE80211_HW_FLAGS] != (void *)0x1); It seems, that compiler instrumentation causes some code deoptimizations. Because of that GCC is not being able to resolve condition in BUILD_BUG_ON() at compile time. We could make size of hw_flag_names array unspecified and replace the condition in BUILD_BUG_ON() with following: ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS That will have the same effect as before (adding new flag without updating array will trigger build failure) except it doesn't fail with CONFIG_UBSAN. As a bonus this patch slightly decreases size of hw_flag_names array. Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
292 lines
8.0 KiB
C
292 lines
8.0 KiB
C
/*
|
|
* mac80211 debugfs for wireless PHYs
|
|
*
|
|
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
|
|
* Copyright 2013-2014 Intel Mobile Communications GmbH
|
|
*
|
|
* GPLv2
|
|
*
|
|
*/
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/rtnetlink.h>
|
|
#include "ieee80211_i.h"
|
|
#include "driver-ops.h"
|
|
#include "rate.h"
|
|
#include "debugfs.h"
|
|
|
|
#define DEBUGFS_FORMAT_BUFFER_SIZE 100
|
|
|
|
int mac80211_format_buffer(char __user *userbuf, size_t count,
|
|
loff_t *ppos, char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
|
|
int res;
|
|
|
|
va_start(args, fmt);
|
|
res = vscnprintf(buf, sizeof(buf), fmt, args);
|
|
va_end(args);
|
|
|
|
return simple_read_from_buffer(userbuf, count, ppos, buf, res);
|
|
}
|
|
|
|
#define DEBUGFS_READONLY_FILE_FN(name, 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; \
|
|
\
|
|
return mac80211_format_buffer(userbuf, count, ppos, \
|
|
fmt "\n", ##value); \
|
|
}
|
|
|
|
#define DEBUGFS_READONLY_FILE_OPS(name) \
|
|
static const struct file_operations name## _ops = { \
|
|
.read = name## _read, \
|
|
.open = simple_open, \
|
|
.llseek = generic_file_llseek, \
|
|
};
|
|
|
|
#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
|
|
DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
|
|
DEBUGFS_READONLY_FILE_OPS(name)
|
|
|
|
#define DEBUGFS_ADD(name) \
|
|
debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
|
|
|
|
#define DEBUGFS_ADD_MODE(name, mode) \
|
|
debugfs_create_file(#name, mode, phyd, local, &name## _ops);
|
|
|
|
|
|
DEBUGFS_READONLY_FILE(user_power, "%d",
|
|
local->user_power_level);
|
|
DEBUGFS_READONLY_FILE(power, "%d",
|
|
local->hw.conf.power_level);
|
|
DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
|
|
local->total_ps_buffered);
|
|
DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
|
|
local->wep_iv & 0xffffff);
|
|
DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
|
|
local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
|
|
|
|
#ifdef CONFIG_PM
|
|
static ssize_t reset_write(struct file *file, const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ieee80211_local *local = file->private_data;
|
|
|
|
rtnl_lock();
|
|
__ieee80211_suspend(&local->hw, NULL);
|
|
__ieee80211_resume(&local->hw);
|
|
rtnl_unlock();
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations reset_ops = {
|
|
.write = reset_write,
|
|
.open = simple_open,
|
|
.llseek = noop_llseek,
|
|
};
|
|
#endif
|
|
|
|
static const char *hw_flag_names[] = {
|
|
#define FLAG(F) [IEEE80211_HW_##F] = #F
|
|
FLAG(HAS_RATE_CONTROL),
|
|
FLAG(RX_INCLUDES_FCS),
|
|
FLAG(HOST_BROADCAST_PS_BUFFERING),
|
|
FLAG(SIGNAL_UNSPEC),
|
|
FLAG(SIGNAL_DBM),
|
|
FLAG(NEED_DTIM_BEFORE_ASSOC),
|
|
FLAG(SPECTRUM_MGMT),
|
|
FLAG(AMPDU_AGGREGATION),
|
|
FLAG(SUPPORTS_PS),
|
|
FLAG(PS_NULLFUNC_STACK),
|
|
FLAG(SUPPORTS_DYNAMIC_PS),
|
|
FLAG(MFP_CAPABLE),
|
|
FLAG(WANT_MONITOR_VIF),
|
|
FLAG(NO_AUTO_VIF),
|
|
FLAG(SW_CRYPTO_CONTROL),
|
|
FLAG(SUPPORT_FAST_XMIT),
|
|
FLAG(REPORTS_TX_ACK_STATUS),
|
|
FLAG(CONNECTION_MONITOR),
|
|
FLAG(QUEUE_CONTROL),
|
|
FLAG(SUPPORTS_PER_STA_GTK),
|
|
FLAG(AP_LINK_PS),
|
|
FLAG(TX_AMPDU_SETUP_IN_HW),
|
|
FLAG(SUPPORTS_RC_TABLE),
|
|
FLAG(P2P_DEV_ADDR_FOR_INTF),
|
|
FLAG(TIMING_BEACON_ONLY),
|
|
FLAG(SUPPORTS_HT_CCK_RATES),
|
|
FLAG(CHANCTX_STA_CSA),
|
|
FLAG(SUPPORTS_CLONED_SKBS),
|
|
FLAG(SINGLE_SCAN_ON_ALL_BANDS),
|
|
FLAG(TDLS_WIDER_BW),
|
|
FLAG(SUPPORTS_AMSDU_IN_AMPDU),
|
|
FLAG(BEACON_TX_STATUS),
|
|
FLAG(NEEDS_UNIQUE_STA_ADDR),
|
|
#undef FLAG
|
|
};
|
|
|
|
static ssize_t hwflags_read(struct file *file, char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ieee80211_local *local = file->private_data;
|
|
size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS;
|
|
char *buf = kzalloc(bufsz, GFP_KERNEL);
|
|
char *pos = buf, *end = buf + bufsz - 1;
|
|
ssize_t rv;
|
|
int i;
|
|
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
/* fail compilation if somebody adds or removes
|
|
* a flag without updating the name array above
|
|
*/
|
|
BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS);
|
|
|
|
for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
|
|
if (test_bit(i, local->hw.flags))
|
|
pos += scnprintf(pos, end - pos, "%s\n",
|
|
hw_flag_names[i]);
|
|
}
|
|
|
|
rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
|
|
kfree(buf);
|
|
return rv;
|
|
}
|
|
|
|
static ssize_t queues_read(struct file *file, char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ieee80211_local *local = file->private_data;
|
|
unsigned long flags;
|
|
char buf[IEEE80211_MAX_QUEUES * 20];
|
|
int q, res = 0;
|
|
|
|
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
|
|
for (q = 0; q < local->hw.queues; q++)
|
|
res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
|
|
local->queue_stop_reasons[q],
|
|
skb_queue_len(&local->pending[q]));
|
|
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, res);
|
|
}
|
|
|
|
DEBUGFS_READONLY_FILE_OPS(hwflags);
|
|
DEBUGFS_READONLY_FILE_OPS(queues);
|
|
|
|
/* statistics stuff */
|
|
|
|
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;
|
|
|
|
rtnl_lock();
|
|
res = drv_get_stats(local, &stats);
|
|
rtnl_unlock();
|
|
if (res)
|
|
return 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 = simple_open, \
|
|
.llseek = generic_file_llseek, \
|
|
};
|
|
|
|
#define DEBUGFS_STATS_ADD(name) \
|
|
debugfs_create_u32(#name, 0400, statsd, &local->name);
|
|
#define DEBUGFS_DEVSTATS_ADD(name) \
|
|
debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
|
|
|
|
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.keys = debugfs_create_dir("keys", phyd);
|
|
|
|
DEBUGFS_ADD(total_ps_buffered);
|
|
DEBUGFS_ADD(wep_iv);
|
|
DEBUGFS_ADD(queues);
|
|
#ifdef CONFIG_PM
|
|
DEBUGFS_ADD_MODE(reset, 0200);
|
|
#endif
|
|
DEBUGFS_ADD(hwflags);
|
|
DEBUGFS_ADD(user_power);
|
|
DEBUGFS_ADD(power);
|
|
|
|
statsd = debugfs_create_dir("statistics", phyd);
|
|
|
|
/* if the dir failed, don't put all the other things into the root! */
|
|
if (!statsd)
|
|
return;
|
|
|
|
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
|
|
DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount);
|
|
DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount);
|
|
DEBUGFS_STATS_ADD(dot11FailedCount);
|
|
DEBUGFS_STATS_ADD(dot11RetryCount);
|
|
DEBUGFS_STATS_ADD(dot11MultipleRetryCount);
|
|
DEBUGFS_STATS_ADD(dot11FrameDuplicateCount);
|
|
DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount);
|
|
DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount);
|
|
DEBUGFS_STATS_ADD(dot11TransmittedFrameCount);
|
|
DEBUGFS_STATS_ADD(tx_handlers_drop);
|
|
DEBUGFS_STATS_ADD(tx_handlers_queued);
|
|
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(tx_expand_skb_head);
|
|
DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
|
|
DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag);
|
|
DEBUGFS_STATS_ADD(rx_handlers_fragments);
|
|
DEBUGFS_STATS_ADD(tx_status_drop);
|
|
#endif
|
|
DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
|
|
DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
|
|
DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
|
|
DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
|
|
}
|