v4.19.13 snapshot.
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
new file mode 100644
index 0000000..4105081
--- /dev/null
+++ b/net/mac80211/debugfs_sta.c
@@ -0,0 +1,565 @@
+/*
+ * 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
+ *
+ * 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/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+1);
+ 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 < IEEE80211_NUM_TIDS; i++) {
+ 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,
+ txqi->flags & (1<<IEEE80211_TXQ_STOP) ? "STOP" : "RUN",
+ txqi->flags & (1<<IEEE80211_TXQ_AMPDU) ? " AMPDU" : "",
+ txqi->flags & (1<<IEEE80211_TXQ_NO_AMSDU) ? " 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_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));
+ }
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
+}
+STA_OPS(vht_capa);
+
+
+#define DEBUGFS_ADD(name) \
+ debugfs_create_file(#name, 0400, \
+ sta->debugfs_dir, sta, &sta_ ##name## _ops);
+
+#define DEBUGFS_ADD_COUNTER(name, field) \
+ if (sizeof(sta->field) == sizeof(u32)) \
+ debugfs_create_u32(#name, 0400, sta->debugfs_dir, \
+ (u32 *) &sta->field); \
+ else \
+ debugfs_create_u64(#name, 0400, sta->debugfs_dir, \
+ (u64 *) &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);
+ if (!sta->debugfs_dir)
+ return;
+
+ 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_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 (sizeof(sta->driver_buffered_tids) == sizeof(u32))
+ debugfs_create_x32("driver_buffered_tids", 0400,
+ sta->debugfs_dir,
+ (u32 *)&sta->driver_buffered_tids);
+ else
+ debugfs_create_x64("driver_buffered_tids", 0400,
+ sta->debugfs_dir,
+ (u64 *)&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;
+}