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linux/net/mac80211/debugfs_sta.c
Toke Høiland-Jørgensen 911bde0fe5 mac80211: Turn AQL into an NL80211_EXT_FEATURE 
Instead of just having an airtime flag in debugfs, turn AQL into a proper
NL80211_EXT_FEATURE, so drivers can turn it on when they are ready, and so
we also expose the presence of the feature to userspace.

This also has the effect of flipping the default, so drivers have to opt in
to using AQL instead of getting it by default with TXQs. To keep
functionality the same as pre-patch, we set this feature for ath10k (which
is where it is needed the most).

While we're at it, split out the debugfs interface so AQL gets its own
per-station debugfs file instead of using the 'airtime' file.

[Johannes:]
This effectively disables AQL for iwlwifi, where it fixes a number of
issues:
 * TSO in iwlwifi is causing underflows and associated warnings in AQL
 * HE (802.11ax) rates aren't reported properly so at HE rates, AQL could
   never have a valid estimate (it'd use 6 Mbps instead of up to 2400!)

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20191212111437.224294-1-toke@redhat.com
Fixes: 3ace10f5b5 ("mac80211: Implement Airtime-based Queue Limit (AQL)")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-12-13 10:34:04 +01:00

1050 lines
32 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2003-2005 Devicescape Software, Inc.
* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright(c) 2016 Intel Deutschland GmbH
* Copyright (C) 2018 - 2019 Intel Corporation
*/
#include <linux/debugfs.h>
#include <linux/ieee80211.h>
#include "ieee80211_i.h"
#include "debugfs.h"
#include "debugfs_sta.h"
#include "sta_info.h"
#include "driver-ops.h"
/* sta attributtes */
#define STA_READ(name, field, format_string) \
static ssize_t sta_ ##name## _read(struct file *file, \
char __user *userbuf, \
size_t count, loff_t *ppos) \
{ \
struct sta_info *sta = file->private_data; \
return mac80211_format_buffer(userbuf, count, ppos, \
format_string, sta->field); \
}
#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
#define STA_OPS(name) \
static const struct file_operations sta_ ##name## _ops = { \
.read = sta_##name##_read, \
.open = simple_open, \
.llseek = generic_file_llseek, \
}
#define STA_OPS_RW(name) \
static const struct file_operations sta_ ##name## _ops = { \
.read = sta_##name##_read, \
.write = sta_##name##_write, \
.open = simple_open, \
.llseek = generic_file_llseek, \
}
#define STA_FILE(name, field, format) \
STA_READ_##format(name, field) \
STA_OPS(name)
STA_FILE(aid, sta.aid, D);
static const char * const sta_flag_names[] = {
#define FLAG(F) [WLAN_STA_##F] = #F
FLAG(AUTH),
FLAG(ASSOC),
FLAG(PS_STA),
FLAG(AUTHORIZED),
FLAG(SHORT_PREAMBLE),
FLAG(WDS),
FLAG(CLEAR_PS_FILT),
FLAG(MFP),
FLAG(BLOCK_BA),
FLAG(PS_DRIVER),
FLAG(PSPOLL),
FLAG(TDLS_PEER),
FLAG(TDLS_PEER_AUTH),
FLAG(TDLS_INITIATOR),
FLAG(TDLS_CHAN_SWITCH),
FLAG(TDLS_OFF_CHANNEL),
FLAG(TDLS_WIDER_BW),
FLAG(UAPSD),
FLAG(SP),
FLAG(4ADDR_EVENT),
FLAG(INSERTED),
FLAG(RATE_CONTROL),
FLAG(TOFFSET_KNOWN),
FLAG(MPSP_OWNER),
FLAG(MPSP_RECIPIENT),
FLAG(PS_DELIVER),
#undef FLAG
};
static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
char buf[16 * NUM_WLAN_STA_FLAGS], *pos = buf;
char *end = buf + sizeof(buf) - 1;
struct sta_info *sta = file->private_data;
unsigned int flg;
BUILD_BUG_ON(ARRAY_SIZE(sta_flag_names) != NUM_WLAN_STA_FLAGS);
for (flg = 0; flg < NUM_WLAN_STA_FLAGS; flg++) {
if (test_sta_flag(sta, flg))
pos += scnprintf(pos, end - pos, "%s\n",
sta_flag_names[flg]);
}
return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
}
STA_OPS(flags);
static ssize_t sta_num_ps_buf_frames_read(struct file *file,
char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
char buf[17*IEEE80211_NUM_ACS], *p = buf;
int ac;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
skb_queue_len(&sta->ps_tx_buf[ac]) +
skb_queue_len(&sta->tx_filtered[ac]));
return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(num_ps_buf_frames);
static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
char buf[15*IEEE80211_NUM_TIDS], *p = buf;
int i;
struct sta_info *sta = file->private_data;
for (i = 0; i < IEEE80211_NUM_TIDS; i++)
p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
le16_to_cpu(sta->last_seq_ctrl[i]));
p += scnprintf(p, sizeof(buf)+buf-p, "\n");
return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(last_seq_ctrl);
#define AQM_TXQ_ENTRY_LEN 130
static ssize_t sta_aqm_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
struct ieee80211_local *local = sta->local;
size_t bufsz = AQM_TXQ_ENTRY_LEN * (IEEE80211_NUM_TIDS + 2);
char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
struct txq_info *txqi;
ssize_t rv;
int i;
if (!buf)
return -ENOMEM;
spin_lock_bh(&local->fq.lock);
rcu_read_lock();
p += scnprintf(p,
bufsz+buf-p,
"target %uus interval %uus ecn %s\n",
codel_time_to_us(sta->cparams.target),
codel_time_to_us(sta->cparams.interval),
sta->cparams.ecn ? "yes" : "no");
p += scnprintf(p,
bufsz+buf-p,
"tid ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets flags\n");
for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
if (!sta->sta.txq[i])
continue;
txqi = to_txq_info(sta->sta.txq[i]);
p += scnprintf(p, bufsz+buf-p,
"%d %d %u %u %u %u %u %u %u %u %u 0x%lx(%s%s%s)\n",
txqi->txq.tid,
txqi->txq.ac,
txqi->tin.backlog_bytes,
txqi->tin.backlog_packets,
txqi->tin.flows,
txqi->cstats.drop_count,
txqi->cstats.ecn_mark,
txqi->tin.overlimit,
txqi->tin.collisions,
txqi->tin.tx_bytes,
txqi->tin.tx_packets,
txqi->flags,
test_bit(IEEE80211_TXQ_STOP, &txqi->flags) ? "STOP" : "RUN",
test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags) ? " AMPDU" : "",
test_bit(IEEE80211_TXQ_NO_AMSDU, &txqi->flags) ? " NO-AMSDU" : "");
}
rcu_read_unlock();
spin_unlock_bh(&local->fq.lock);
rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
return rv;
}
STA_OPS(aqm);
static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
struct ieee80211_local *local = sta->sdata->local;
size_t bufsz = 400;
char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
u64 rx_airtime = 0, tx_airtime = 0;
s64 deficit[IEEE80211_NUM_ACS];
ssize_t rv;
int ac;
if (!buf)
return -ENOMEM;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
spin_lock_bh(&local->active_txq_lock[ac]);
rx_airtime += sta->airtime[ac].rx_airtime;
tx_airtime += sta->airtime[ac].tx_airtime;
deficit[ac] = sta->airtime[ac].deficit;
spin_unlock_bh(&local->active_txq_lock[ac]);
}
p += scnprintf(p, bufsz + buf - p,
"RX: %llu us\nTX: %llu us\nWeight: %u\n"
"Deficit: VO: %lld us VI: %lld us BE: %lld us BK: %lld us\n",
rx_airtime, tx_airtime, sta->airtime_weight,
deficit[0], deficit[1], deficit[2], deficit[3]);
rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
return rv;
}
static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
struct ieee80211_local *local = sta->sdata->local;
int ac;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
spin_lock_bh(&local->active_txq_lock[ac]);
sta->airtime[ac].rx_airtime = 0;
sta->airtime[ac].tx_airtime = 0;
sta->airtime[ac].deficit = sta->airtime_weight;
spin_unlock_bh(&local->active_txq_lock[ac]);
}
return count;
}
STA_OPS_RW(airtime);
static ssize_t sta_aql_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
struct ieee80211_local *local = sta->sdata->local;
size_t bufsz = 400;
char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
u32 q_depth[IEEE80211_NUM_ACS];
u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS];
ssize_t rv;
int ac;
if (!buf)
return -ENOMEM;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
spin_lock_bh(&local->active_txq_lock[ac]);
q_limit_l[ac] = sta->airtime[ac].aql_limit_low;
q_limit_h[ac] = sta->airtime[ac].aql_limit_high;
spin_unlock_bh(&local->active_txq_lock[ac]);
q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending);
}
p += scnprintf(p, bufsz + buf - p,
"Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n"
"Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n",
q_depth[0], q_depth[1], q_depth[2], q_depth[3],
q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1],
q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]),
rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
return rv;
}
static ssize_t sta_aql_write(struct file *file, const char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
u32 ac, q_limit_l, q_limit_h;
char _buf[100] = {}, *buf = _buf;
if (count > sizeof(_buf))
return -EINVAL;
if (copy_from_user(buf, userbuf, count))
return -EFAULT;
buf[sizeof(_buf) - 1] = '\0';
if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h)
!= 3)
return -EINVAL;
if (ac >= IEEE80211_NUM_ACS)
return -EINVAL;
sta->airtime[ac].aql_limit_low = q_limit_l;
sta->airtime[ac].aql_limit_high = q_limit_h;
return count;
}
STA_OPS_RW(aql);
static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
char buf[71 + IEEE80211_NUM_TIDS * 40], *p = buf;
int i;
struct sta_info *sta = file->private_data;
struct tid_ampdu_rx *tid_rx;
struct tid_ampdu_tx *tid_tx;
rcu_read_lock();
p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
sta->ampdu_mlme.dialog_token_allocator + 1);
p += scnprintf(p, sizeof(buf) + buf - p,
"TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
bool tid_rx_valid;
tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
tid_rx_valid = test_bit(i, sta->ampdu_mlme.agg_session_valid);
p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
tid_rx_valid);
p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
tid_rx_valid ?
sta->ampdu_mlme.tid_rx_token[i] : 0);
p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
tid_rx ? tid_rx->ssn : 0);
p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
tid_tx ? tid_tx->dialog_token : 0);
p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
p += scnprintf(p, sizeof(buf) + buf - p, "\n");
}
rcu_read_unlock();
return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
size_t count, loff_t *ppos)
{
char _buf[25] = {}, *buf = _buf;
struct sta_info *sta = file->private_data;
bool start, tx;
unsigned long tid;
char *pos;
int ret, timeout = 5000;
if (count > sizeof(_buf))
return -EINVAL;
if (copy_from_user(buf, userbuf, count))
return -EFAULT;
buf[sizeof(_buf) - 1] = '\0';
pos = buf;
buf = strsep(&pos, " ");
if (!buf)
return -EINVAL;
if (!strcmp(buf, "tx"))
tx = true;
else if (!strcmp(buf, "rx"))
tx = false;
else
return -EINVAL;
buf = strsep(&pos, " ");
if (!buf)
return -EINVAL;
if (!strcmp(buf, "start")) {
start = true;
if (!tx)
return -EINVAL;
} else if (!strcmp(buf, "stop")) {
start = false;
} else {
return -EINVAL;
}
buf = strsep(&pos, " ");
if (!buf)
return -EINVAL;
if (sscanf(buf, "timeout=%d", &timeout) == 1) {
buf = strsep(&pos, " ");
if (!buf || !tx || !start)
return -EINVAL;
}
ret = kstrtoul(buf, 0, &tid);
if (ret || tid >= IEEE80211_NUM_TIDS)
return -EINVAL;
if (tx) {
if (start)
ret = ieee80211_start_tx_ba_session(&sta->sta, tid,
timeout);
else
ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
} else {
__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
3, true);
ret = 0;
}
return ret ?: count;
}
STA_OPS_RW(agg_status);
static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
#define PRINT_HT_CAP(_cond, _str) \
do { \
if (_cond) \
p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
} while (0)
char buf[512], *p = buf;
int i;
struct sta_info *sta = file->private_data;
struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
htc->ht_supported ? "" : "not ");
if (htc->ht_supported) {
p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
"3839 bytes");
PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
"7935 bytes");
/*
* For beacons and probe response this would mean the BSS
* does or does not allow the usage of DSSS/CCK HT40.
* Otherwise it means the STA does or does not use
* DSSS/CCK HT40.
*/
PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
/* BIT(13) is reserved */
PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
htc->ampdu_factor, htc->ampdu_density);
p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
htc->mcs.rx_mask[i]);
p += scnprintf(p, sizeof(buf)+buf-p, "\n");
/* If not set this is meaningless */
if (le16_to_cpu(htc->mcs.rx_highest)) {
p += scnprintf(p, sizeof(buf)+buf-p,
"MCS rx highest: %d Mbps\n",
le16_to_cpu(htc->mcs.rx_highest));
}
p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
htc->mcs.tx_params);
}
return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(ht_capa);
static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
char buf[512], *p = buf;
struct sta_info *sta = file->private_data;
struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
vhtc->vht_supported ? "" : "not ");
if (vhtc->vht_supported) {
p += scnprintf(p, sizeof(buf) + buf - p, "cap: %#.8x\n",
vhtc->cap);
#define PFLAG(a, b) \
do { \
if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \
p += scnprintf(p, sizeof(buf) + buf - p, \
"\t\t%s\n", b); \
} while (0)
switch (vhtc->cap & 0x3) {
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tMAX-MPDU-3895\n");
break;
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tMAX-MPDU-7991\n");
break;
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tMAX-MPDU-11454\n");
break;
default:
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tMAX-MPDU-UNKNOWN\n");
}
switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
case 0:
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\t80Mhz\n");
break;
case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\t160Mhz\n");
break;
case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\t80+80Mhz\n");
break;
default:
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tUNKNOWN-MHZ: 0x%x\n",
(vhtc->cap >> 2) & 0x3);
}
PFLAG(RXLDPC, "RXLDPC");
PFLAG(SHORT_GI_80, "SHORT-GI-80");
PFLAG(SHORT_GI_160, "SHORT-GI-160");
PFLAG(TXSTBC, "TXSTBC");
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tBEAMFORMEE-STS: 0x%x\n",
(vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tSOUNDING-DIMENSIONS: 0x%x\n",
(vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
>> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
PFLAG(VHT_TXOP_PS, "TXOP-PS");
PFLAG(HTC_VHT, "HTC-VHT");
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
(vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
"LINK-ADAPTATION-VHT-UNSOL-MFB");
p += scnprintf(p, sizeof(buf) + buf - p,
"\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
(vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
if (vhtc->vht_mcs.rx_highest)
p += scnprintf(p, sizeof(buf)+buf-p,
"MCS RX highest: %d Mbps\n",
le16_to_cpu(vhtc->vht_mcs.rx_highest));
p += scnprintf(p, sizeof(buf)+buf-p, "TX MCS: %.4x\n",
le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
if (vhtc->vht_mcs.tx_highest)
p += scnprintf(p, sizeof(buf)+buf-p,
"MCS TX highest: %d Mbps\n",
le16_to_cpu(vhtc->vht_mcs.tx_highest));
#undef PFLAG
}
return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(vht_capa);
static ssize_t sta_he_capa_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
char *buf, *p;
size_t buf_sz = PAGE_SIZE;
struct sta_info *sta = file->private_data;
struct ieee80211_sta_he_cap *hec = &sta->sta.he_cap;
struct ieee80211_he_mcs_nss_supp *nss = &hec->he_mcs_nss_supp;
u8 ppe_size;
u8 *cap;
int i;
ssize_t ret;
buf = kmalloc(buf_sz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
p = buf;
p += scnprintf(p, buf_sz + buf - p, "HE %ssupported\n",
hec->has_he ? "" : "not ");
if (!hec->has_he)
goto out;
cap = hec->he_cap_elem.mac_cap_info;
p += scnprintf(p, buf_sz + buf - p,
"MAC-CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
cap[0], cap[1], cap[2], cap[3], cap[4], cap[5]);
#define PRINT(fmt, ...) \
p += scnprintf(p, buf_sz + buf - p, "\t\t" fmt "\n", \
##__VA_ARGS__)
#define PFLAG(t, n, a, b) \
do { \
if (cap[n] & IEEE80211_HE_##t##_CAP##n##_##a) \
PRINT("%s", b); \
} while (0)
#define PFLAG_RANGE(t, i, n, s, m, off, fmt) \
do { \
u8 msk = IEEE80211_HE_##t##_CAP##i##_##n##_MASK; \
u8 idx = ((cap[i] & msk) >> (ffs(msk) - 1)) + off; \
PRINT(fmt, (s << idx) + (m * idx)); \
} while (0)
#define PFLAG_RANGE_DEFAULT(t, i, n, s, m, off, fmt, a, b) \
do { \
if (cap[i] == IEEE80211_HE_##t ##_CAP##i##_##n##_##a) { \
PRINT("%s", b); \
break; \
} \
PFLAG_RANGE(t, i, n, s, m, off, fmt); \
} while (0)
PFLAG(MAC, 0, HTC_HE, "HTC-HE");
PFLAG(MAC, 0, TWT_REQ, "TWT-REQ");
PFLAG(MAC, 0, TWT_RES, "TWT-RES");
PFLAG_RANGE_DEFAULT(MAC, 0, DYNAMIC_FRAG, 0, 1, 0,
"DYNAMIC-FRAG-LEVEL-%d", NOT_SUPP, "NOT-SUPP");
PFLAG_RANGE_DEFAULT(MAC, 0, MAX_NUM_FRAG_MSDU, 1, 0, 0,
"MAX-NUM-FRAG-MSDU-%d", UNLIMITED, "UNLIMITED");
PFLAG_RANGE_DEFAULT(MAC, 1, MIN_FRAG_SIZE, 128, 0, -1,
"MIN-FRAG-SIZE-%d", UNLIMITED, "UNLIMITED");
PFLAG_RANGE_DEFAULT(MAC, 1, TF_MAC_PAD_DUR, 0, 8, 0,
"TF-MAC-PAD-DUR-%dUS", MASK, "UNKNOWN");
PFLAG_RANGE(MAC, 1, MULTI_TID_AGG_RX_QOS, 0, 1, 1,
"MULTI-TID-AGG-RX-QOS-%d");
if (cap[0] & IEEE80211_HE_MAC_CAP0_HTC_HE) {
switch (((cap[2] << 1) | (cap[1] >> 7)) & 0x3) {
case 0:
PRINT("LINK-ADAPTATION-NO-FEEDBACK");
break;
case 1:
PRINT("LINK-ADAPTATION-RESERVED");
break;
case 2:
PRINT("LINK-ADAPTATION-UNSOLICITED-FEEDBACK");
break;
case 3:
PRINT("LINK-ADAPTATION-BOTH");
break;
}
}
PFLAG(MAC, 2, ALL_ACK, "ALL-ACK");
PFLAG(MAC, 2, TRS, "TRS");
PFLAG(MAC, 2, BSR, "BSR");
PFLAG(MAC, 2, BCAST_TWT, "BCAST-TWT");
PFLAG(MAC, 2, 32BIT_BA_BITMAP, "32BIT-BA-BITMAP");
PFLAG(MAC, 2, MU_CASCADING, "MU-CASCADING");
PFLAG(MAC, 2, ACK_EN, "ACK-EN");
PFLAG(MAC, 3, OMI_CONTROL, "OMI-CONTROL");
PFLAG(MAC, 3, OFDMA_RA, "OFDMA-RA");
switch (cap[3] & IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) {
case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_USE_VHT:
PRINT("MAX-AMPDU-LEN-EXP-USE-VHT");
break;
case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_1:
PRINT("MAX-AMPDU-LEN-EXP-VHT-1");
break;
case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2:
PRINT("MAX-AMPDU-LEN-EXP-VHT-2");
break;
case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_RESERVED:
PRINT("MAX-AMPDU-LEN-EXP-RESERVED");
break;
}
PFLAG(MAC, 3, AMSDU_FRAG, "AMSDU-FRAG");
PFLAG(MAC, 3, FLEX_TWT_SCHED, "FLEX-TWT-SCHED");
PFLAG(MAC, 3, RX_CTRL_FRAME_TO_MULTIBSS, "RX-CTRL-FRAME-TO-MULTIBSS");
PFLAG(MAC, 4, BSRP_BQRP_A_MPDU_AGG, "BSRP-BQRP-A-MPDU-AGG");
PFLAG(MAC, 4, QTP, "QTP");
PFLAG(MAC, 4, BQR, "BQR");
PFLAG(MAC, 4, SRP_RESP, "SRP-RESP");
PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP");
PFLAG(MAC, 4, OPS, "OPS");
PFLAG(MAC, 4, AMDSU_IN_AMPDU, "AMSDU-IN-AMPDU");
PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7);
PFLAG(MAC, 5, SUBCHAN_SELECVITE_TRANSMISSION,
"SUBCHAN-SELECVITE-TRANSMISSION");
PFLAG(MAC, 5, UL_2x996_TONE_RU, "UL-2x996-TONE-RU");
PFLAG(MAC, 5, OM_CTRL_UL_MU_DATA_DIS_RX, "OM-CTRL-UL-MU-DATA-DIS-RX");
PFLAG(MAC, 5, HE_DYNAMIC_SM_PS, "HE-DYNAMIC-SM-PS");
PFLAG(MAC, 5, PUNCTURED_SOUNDING, "PUNCTURED-SOUNDING");
PFLAG(MAC, 5, HT_VHT_TRIG_FRAME_RX, "HT-VHT-TRIG-FRAME-RX");
cap = hec->he_cap_elem.phy_cap_info;
p += scnprintf(p, buf_sz + buf - p,
"PHY CAP: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
cap[0], cap[1], cap[2], cap[3], cap[4], cap[5], cap[6],
cap[7], cap[8], cap[9], cap[10]);
PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_IN_2G,
"CHANNEL-WIDTH-SET-40MHZ-IN-2G");
PFLAG(PHY, 0, CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G,
"CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G");
PFLAG(PHY, 0, CHANNEL_WIDTH_SET_160MHZ_IN_5G,
"CHANNEL-WIDTH-SET-160MHZ-IN-5G");
PFLAG(PHY, 0, CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
"CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G");
PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G,
"CHANNEL-WIDTH-SET-RU-MAPPING-IN-2G");
PFLAG(PHY, 0, CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G,
"CHANNEL-WIDTH-SET-RU-MAPPING-IN-5G");
switch (cap[1] & IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK) {
case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_20MHZ:
PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-20MHZ");
break;
case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_80MHZ_ONLY_SECOND_40MHZ:
PRINT("PREAMBLE-PUNC-RX-80MHZ-ONLY-SECOND-40MHZ");
break;
case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_20MHZ:
PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-20MHZ");
break;
case IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_160MHZ_ONLY_SECOND_40MHZ:
PRINT("PREAMBLE-PUNC-RX-160MHZ-ONLY-SECOND-40MHZ");
break;
}
PFLAG(PHY, 1, DEVICE_CLASS_A,
"IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A");
PFLAG(PHY, 1, LDPC_CODING_IN_PAYLOAD,
"LDPC-CODING-IN-PAYLOAD");
PFLAG(PHY, 1, HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US,
"HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US");
PRINT("MIDAMBLE-RX-MAX-NSTS-%d", ((cap[2] << 1) | (cap[1] >> 7)) & 0x3);
PFLAG(PHY, 2, NDP_4x_LTF_AND_3_2US, "NDP-4X-LTF-AND-3-2US");
PFLAG(PHY, 2, STBC_TX_UNDER_80MHZ, "STBC-TX-UNDER-80MHZ");
PFLAG(PHY, 2, STBC_RX_UNDER_80MHZ, "STBC-RX-UNDER-80MHZ");
PFLAG(PHY, 2, DOPPLER_TX, "DOPPLER-TX");
PFLAG(PHY, 2, DOPPLER_RX, "DOPPLER-RX");
PFLAG(PHY, 2, UL_MU_FULL_MU_MIMO, "UL-MU-FULL-MU-MIMO");
PFLAG(PHY, 2, UL_MU_PARTIAL_MU_MIMO, "UL-MU-PARTIAL-MU-MIMO");
switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK) {
case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM:
PRINT("DCM-MAX-CONST-TX-NO-DCM");
break;
case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_BPSK:
PRINT("DCM-MAX-CONST-TX-BPSK");
break;
case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_QPSK:
PRINT("DCM-MAX-CONST-TX-QPSK");
break;
case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_16_QAM:
PRINT("DCM-MAX-CONST-TX-16-QAM");
break;
}
PFLAG(PHY, 3, DCM_MAX_TX_NSS_1, "DCM-MAX-TX-NSS-1");
PFLAG(PHY, 3, DCM_MAX_TX_NSS_2, "DCM-MAX-TX-NSS-2");
switch (cap[3] & IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK) {
case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_NO_DCM:
PRINT("DCM-MAX-CONST-RX-NO-DCM");
break;
case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_BPSK:
PRINT("DCM-MAX-CONST-RX-BPSK");
break;
case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_QPSK:
PRINT("DCM-MAX-CONST-RX-QPSK");
break;
case IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM:
PRINT("DCM-MAX-CONST-RX-16-QAM");
break;
}
PFLAG(PHY, 3, DCM_MAX_RX_NSS_1, "DCM-MAX-RX-NSS-1");
PFLAG(PHY, 3, DCM_MAX_RX_NSS_2, "DCM-MAX-RX-NSS-2");
PFLAG(PHY, 3, RX_HE_MU_PPDU_FROM_NON_AP_STA,
"RX-HE-MU-PPDU-FROM-NON-AP-STA");
PFLAG(PHY, 3, SU_BEAMFORMER, "SU-BEAMFORMER");
PFLAG(PHY, 4, SU_BEAMFORMEE, "SU-BEAMFORMEE");
PFLAG(PHY, 4, MU_BEAMFORMER, "MU-BEAMFORMER");
PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_UNDER_80MHZ, 0, 1, 4,
"BEAMFORMEE-MAX-STS-UNDER-%d");
PFLAG_RANGE(PHY, 4, BEAMFORMEE_MAX_STS_ABOVE_80MHZ, 0, 1, 4,
"BEAMFORMEE-MAX-STS-ABOVE-%d");
PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ, 0, 1, 1,
"NUM-SND-DIM-UNDER-80MHZ-%d");
PFLAG_RANGE(PHY, 5, BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ, 0, 1, 1,
"NUM-SND-DIM-ABOVE-80MHZ-%d");
PFLAG(PHY, 5, NG16_SU_FEEDBACK, "NG16-SU-FEEDBACK");
PFLAG(PHY, 5, NG16_MU_FEEDBACK, "NG16-MU-FEEDBACK");
PFLAG(PHY, 6, CODEBOOK_SIZE_42_SU, "CODEBOOK-SIZE-42-SU");
PFLAG(PHY, 6, CODEBOOK_SIZE_75_MU, "CODEBOOK-SIZE-75-MU");
PFLAG(PHY, 6, TRIG_SU_BEAMFORMER_FB, "TRIG-SU-BEAMFORMER-FB");
PFLAG(PHY, 6, TRIG_MU_BEAMFORMER_FB, "TRIG-MU-BEAMFORMER-FB");
PFLAG(PHY, 6, TRIG_CQI_FB, "TRIG-CQI-FB");
PFLAG(PHY, 6, PARTIAL_BW_EXT_RANGE, "PARTIAL-BW-EXT-RANGE");
PFLAG(PHY, 6, PARTIAL_BANDWIDTH_DL_MUMIMO,
"PARTIAL-BANDWIDTH-DL-MUMIMO");
PFLAG(PHY, 6, PPE_THRESHOLD_PRESENT, "PPE-THRESHOLD-PRESENT");
PFLAG(PHY, 7, SRP_BASED_SR, "SRP-BASED-SR");
PFLAG(PHY, 7, POWER_BOOST_FACTOR_AR, "POWER-BOOST-FACTOR-AR");
PFLAG(PHY, 7, HE_SU_MU_PPDU_4XLTF_AND_08_US_GI,
"HE-SU-MU-PPDU-4XLTF-AND-08-US-GI");
PFLAG_RANGE(PHY, 7, MAX_NC, 0, 1, 1, "MAX-NC-%d");
PFLAG(PHY, 7, STBC_TX_ABOVE_80MHZ, "STBC-TX-ABOVE-80MHZ");
PFLAG(PHY, 7, STBC_RX_ABOVE_80MHZ, "STBC-RX-ABOVE-80MHZ");
PFLAG(PHY, 8, HE_ER_SU_PPDU_4XLTF_AND_08_US_GI,
"HE-ER-SU-PPDU-4XLTF-AND-08-US-GI");
PFLAG(PHY, 8, 20MHZ_IN_40MHZ_HE_PPDU_IN_2G,
"20MHZ-IN-40MHZ-HE-PPDU-IN-2G");
PFLAG(PHY, 8, 20MHZ_IN_160MHZ_HE_PPDU, "20MHZ-IN-160MHZ-HE-PPDU");
PFLAG(PHY, 8, 80MHZ_IN_160MHZ_HE_PPDU, "80MHZ-IN-160MHZ-HE-PPDU");
PFLAG(PHY, 8, HE_ER_SU_1XLTF_AND_08_US_GI,
"HE-ER-SU-1XLTF-AND-08-US-GI");
PFLAG(PHY, 8, MIDAMBLE_RX_TX_2X_AND_1XLTF,
"MIDAMBLE-RX-TX-2X-AND-1XLTF");
switch (cap[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK) {
case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242:
PRINT("DCM-MAX-RU-242");
break;
case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484:
PRINT("DCM-MAX-RU-484");
break;
case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996:
PRINT("DCM-MAX-RU-996");
break;
case IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996:
PRINT("DCM-MAX-RU-2x996");
break;
}
PFLAG(PHY, 9, LONGER_THAN_16_SIGB_OFDM_SYM,
"LONGER-THAN-16-SIGB-OFDM-SYM");
PFLAG(PHY, 9, NON_TRIGGERED_CQI_FEEDBACK,
"NON-TRIGGERED-CQI-FEEDBACK");
PFLAG(PHY, 9, TX_1024_QAM_LESS_THAN_242_TONE_RU,
"TX-1024-QAM-LESS-THAN-242-TONE-RU");
PFLAG(PHY, 9, RX_1024_QAM_LESS_THAN_242_TONE_RU,
"RX-1024-QAM-LESS-THAN-242-TONE-RU");
PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB,
"RX-FULL-BW-SU-USING-MU-WITH-COMP-SIGB");
PFLAG(PHY, 9, RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB,
"RX-FULL-BW-SU-USING-MU-WITH-NON-COMP-SIGB");
switch (cap[9] & IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) {
case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US:
PRINT("NOMINAL-PACKET-PADDING-0US");
break;
case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US:
PRINT("NOMINAL-PACKET-PADDING-8US");
break;
case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US:
PRINT("NOMINAL-PACKET-PADDING-16US");
break;
}
#undef PFLAG_RANGE_DEFAULT
#undef PFLAG_RANGE
#undef PFLAG
#define PRINT_NSS_SUPP(f, n) \
do { \
int _i; \
u16 v = le16_to_cpu(nss->f); \
p += scnprintf(p, buf_sz + buf - p, n ": %#.4x\n", v); \
for (_i = 0; _i < 8; _i += 2) { \
switch ((v >> _i) & 0x3) { \
case 0: \
PRINT(n "-%d-SUPPORT-0-7", _i / 2); \
break; \
case 1: \
PRINT(n "-%d-SUPPORT-0-9", _i / 2); \
break; \
case 2: \
PRINT(n "-%d-SUPPORT-0-11", _i / 2); \
break; \
case 3: \
PRINT(n "-%d-NOT-SUPPORTED", _i / 2); \
break; \
} \
} \
} while (0)
PRINT_NSS_SUPP(rx_mcs_80, "RX-MCS-80");
PRINT_NSS_SUPP(tx_mcs_80, "TX-MCS-80");
if (cap[0] & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G) {
PRINT_NSS_SUPP(rx_mcs_160, "RX-MCS-160");
PRINT_NSS_SUPP(tx_mcs_160, "TX-MCS-160");
}
if (cap[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
PRINT_NSS_SUPP(rx_mcs_80p80, "RX-MCS-80P80");
PRINT_NSS_SUPP(tx_mcs_80p80, "TX-MCS-80P80");
}
#undef PRINT_NSS_SUPP
#undef PRINT
if (!(cap[6] & IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT))
goto out;
p += scnprintf(p, buf_sz + buf - p, "PPE-THRESHOLDS: %#.2x",
hec->ppe_thres[0]);
ppe_size = ieee80211_he_ppe_size(hec->ppe_thres[0], cap);
for (i = 1; i < ppe_size; i++) {
p += scnprintf(p, buf_sz + buf - p, " %#.2x",
hec->ppe_thres[i]);
}
p += scnprintf(p, buf_sz + buf - p, "\n");
out:
ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
return ret;
}
STA_OPS(he_capa);
#define DEBUGFS_ADD(name) \
debugfs_create_file(#name, 0400, \
sta->debugfs_dir, sta, &sta_ ##name## _ops);
#define DEBUGFS_ADD_COUNTER(name, field) \
debugfs_create_ulong(#name, 0400, sta->debugfs_dir, &sta->field);
void ieee80211_sta_debugfs_add(struct sta_info *sta)
{
struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
u8 mac[3*ETH_ALEN];
if (!stations_dir)
return;
snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
/*
* This might fail due to a race condition:
* When mac80211 unlinks a station, the debugfs entries
* remain, but it is already possible to link a new
* station with the same address which triggers adding
* it to debugfs; therefore, if the old station isn't
* destroyed quickly enough the old station's debugfs
* dir might still be around.
*/
sta->debugfs_dir = debugfs_create_dir(mac, stations_dir);
DEBUGFS_ADD(flags);
DEBUGFS_ADD(aid);
DEBUGFS_ADD(num_ps_buf_frames);
DEBUGFS_ADD(last_seq_ctrl);
DEBUGFS_ADD(agg_status);
DEBUGFS_ADD(ht_capa);
DEBUGFS_ADD(vht_capa);
DEBUGFS_ADD(he_capa);
DEBUGFS_ADD_COUNTER(rx_duplicates, rx_stats.num_duplicates);
DEBUGFS_ADD_COUNTER(rx_fragments, rx_stats.fragments);
DEBUGFS_ADD_COUNTER(tx_filtered, status_stats.filtered);
if (local->ops->wake_tx_queue)
DEBUGFS_ADD(aqm);
if (wiphy_ext_feature_isset(local->hw.wiphy,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
DEBUGFS_ADD(airtime);
if (wiphy_ext_feature_isset(local->hw.wiphy,
NL80211_EXT_FEATURE_AQL))
DEBUGFS_ADD(aql);
debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir,
&sta->driver_buffered_tids);
drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs_dir);
}
void ieee80211_sta_debugfs_remove(struct sta_info *sta)
{
debugfs_remove_recursive(sta->debugfs_dir);
sta->debugfs_dir = NULL;
}
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