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debugfs_sta.c
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debugfs_sta.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2003-2005 Devicescape Software, Inc.
* Copyright (c) 2006 Jiri Benc <[email protected]>
* Copyright 2007 Johannes Berg <[email protected]>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright(c) 2016 Intel Deutschland GmbH
* Copyright (C) 2018 - 2022 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),
FLAG(USES_ENCRYPTION),
FLAG(DECAP_OFFLOAD),
#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%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" : "",
test_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ? " DIRTY" : "");
}
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;
s32 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: %d us VI: %d us BE: %d us BK: %d 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, *p;
ssize_t bufsz = 71 + IEEE80211_NUM_TIDS * 40;
int i;
struct sta_info *sta = file->private_data;
struct tid_ampdu_rx *tid_rx;
struct tid_ampdu_tx *tid_tx;
ssize_t ret;
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
p = buf;
rcu_read_lock();
p += scnprintf(p, bufsz + buf - p, "next dialog_token: %#02x\n",
sta->ampdu_mlme.dialog_token_allocator + 1);
p += scnprintf(p, bufsz + 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, bufsz + buf - p, "%02d", i);
p += scnprintf(p, bufsz + buf - p, "\t\t%x",
tid_rx_valid);
p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
tid_rx_valid ?
sta->ampdu_mlme.tid_rx_token[i] : 0);
p += scnprintf(p, bufsz + buf - p, "\t%#.3x",
tid_rx ? tid_rx->ssn : 0);
p += scnprintf(p, bufsz + buf - p, "\t\t%x", !!tid_tx);
p += scnprintf(p, bufsz + buf - p, "\t%#.2x",
tid_tx ? tid_tx->dialog_token : 0);
p += scnprintf(p, bufsz + buf - p, "\t%03d",
tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
p += scnprintf(p, bufsz + buf - p, "\n");
}
rcu_read_unlock();
ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
return ret;
}
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);
/* link sta attributes */
#define LINK_STA_OPS(name) \
static const struct file_operations link_sta_ ##name## _ops = { \
.read = link_sta_##name##_read, \
.open = simple_open, \
.llseek = generic_file_llseek, \
}
static ssize_t link_sta_addr_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct link_sta_info *link_sta = file->private_data;
u8 mac[3 * ETH_ALEN + 1];
snprintf(mac, sizeof(mac), "%pM\n", link_sta->pub->addr);
return simple_read_from_buffer(userbuf, count, ppos, mac, 3 * ETH_ALEN);
}
LINK_STA_OPS(addr);
static ssize_t link_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, bufsz + buf - p, "\t" _str "\n"); \
} while (0)
char *buf, *p;
int i;
ssize_t bufsz = 512;
struct link_sta_info *link_sta = file->private_data;
struct ieee80211_sta_ht_cap *htc = &link_sta->pub->ht_cap;
ssize_t ret;
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
p = buf;
p += scnprintf(p, bufsz + buf - p, "ht %ssupported\n",
htc->ht_supported ? "" : "not ");
if (htc->ht_supported) {
p += scnprintf(p, bufsz + 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, bufsz + buf - p, "ampdu factor/density: %d/%d\n",
htc->ampdu_factor, htc->ampdu_density);
p += scnprintf(p, bufsz + buf - p, "MCS mask:");
for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
p += scnprintf(p, bufsz + buf - p, " %.2x",
htc->mcs.rx_mask[i]);
p += scnprintf(p, bufsz + buf - p, "\n");
/* If not set this is meaningless */
if (le16_to_cpu(htc->mcs.rx_highest)) {
p += scnprintf(p, bufsz + buf - p,
"MCS rx highest: %d Mbps\n",
le16_to_cpu(htc->mcs.rx_highest));
}
p += scnprintf(p, bufsz + buf - p, "MCS tx params: %x\n",
htc->mcs.tx_params);
}
ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
return ret;
}
LINK_STA_OPS(ht_capa);
static ssize_t link_sta_vht_capa_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
char *buf, *p;
struct link_sta_info *link_sta = file->private_data;
struct ieee80211_sta_vht_cap *vhtc = &link_sta->pub->vht_cap;
ssize_t ret;
ssize_t bufsz = 512;
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
p = buf;
p += scnprintf(p, bufsz + buf - p, "VHT %ssupported\n",
vhtc->vht_supported ? "" : "not ");
if (vhtc->vht_supported) {
p += scnprintf(p, bufsz + buf - p, "cap: %#.8x\n",
vhtc->cap);
#define PFLAG(a, b) \
do { \
if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \
p += scnprintf(p, bufsz + buf - p, \
"\t\t%s\n", b); \
} while (0)
switch (vhtc->cap & 0x3) {
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
p += scnprintf(p, bufsz + buf - p,
"\t\tMAX-MPDU-3895\n");
break;
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
p += scnprintf(p, bufsz + buf - p,
"\t\tMAX-MPDU-7991\n");
break;
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
p += scnprintf(p, bufsz + buf - p,
"\t\tMAX-MPDU-11454\n");
break;
default:
p += scnprintf(p, bufsz + buf - p,
"\t\tMAX-MPDU-UNKNOWN\n");
}
switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
case 0:
p += scnprintf(p, bufsz + buf - p,
"\t\t80Mhz\n");
break;
case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
p += scnprintf(p, bufsz + buf - p,
"\t\t160Mhz\n");
break;
case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
p += scnprintf(p, bufsz + buf - p,
"\t\t80+80Mhz\n");
break;
default:
p += scnprintf(p, bufsz + 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, bufsz + 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, bufsz + 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, bufsz + 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, bufsz + 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, bufsz + 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, bufsz + buf - p, "RX MCS: %.4x\n",
le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
if (vhtc->vht_mcs.rx_highest)
p += scnprintf(p, bufsz + buf - p,
"MCS RX highest: %d Mbps\n",
le16_to_cpu(vhtc->vht_mcs.rx_highest));
p += scnprintf(p, bufsz + buf - p, "TX MCS: %.4x\n",
le16_to_cpu(vhtc->vht_mcs.tx_mcs_map));
if (vhtc->vht_mcs.tx_highest)
p += scnprintf(p, bufsz + buf - p,
"MCS TX highest: %d Mbps\n",
le16_to_cpu(vhtc->vht_mcs.tx_highest));
#undef PFLAG
}
ret = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
return ret;
}
LINK_STA_OPS(vht_capa);
static ssize_t link_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 link_sta_info *link_sta = file->private_data;
struct ieee80211_sta_he_cap *hec = &link_sta->pub->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_EXT_0:
PRINT("MAX-AMPDU-LEN-EXP-USE-EXT-0");
break;
case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_1:
PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-1");
break;
case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_2:
PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-2");
break;
case IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3:
PRINT("MAX-AMPDU-LEN-EXP-VHT-EXT-3");
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, PSR_RESP, "PSR-RESP");
PFLAG(MAC, 4, NDP_FB_REP, "NDP-FB-REP");
PFLAG(MAC, 4, OPS, "OPS");
PFLAG(MAC, 4, AMSDU_IN_AMPDU, "AMSDU-IN-AMPDU");
PRINT("MULTI-TID-AGG-TX-QOS-%d", ((cap[5] << 1) | (cap[4] >> 7)) & 0x7);
PFLAG(MAC, 5, SUBCHAN_SELECTIVE_TRANSMISSION,
"SUBCHAN-SELECTIVE-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_PARTIAL_BW_SU_IN_20MHZ_MU,
"RX-PARTIAL-BW-SU-IN-20MHZ-MU");
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_BEAMFORMING_FB, "TRIG-SU-BEAMFORMING-FB");
PFLAG(PHY, 6, TRIG_MU_BEAMFORMING_PARTIAL_BW_FB,
"MU-BEAMFORMING-PARTIAL-BW-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, PSR_BASED_SR, "PSR-BASED-SR");
PFLAG(PHY, 7, POWER_BOOST_FACTOR_SUPP, "POWER-BOOST-FACTOR-SUPP");
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 (u8_get_bits(cap[9],
IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK)) {
case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US:
PRINT("NOMINAL-PACKET-PADDING-0US");
break;
case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US:
PRINT("NOMINAL-PACKET-PADDING-8US");
break;
case IEEE80211_HE_PHY_CAP9_NOMINAL_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)