net/mac80211/debugfs_netdev.c

   1 /*
   2  * Copyright (c) 2006   Jiri Benc <jbenc@suse.cz>
   3  * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/device.h>
  12 #include <linux/if.h>
  13 #include <linux/if_ether.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/netdevice.h>
  16 #include <linux/rtnetlink.h>
  17 #include <linux/slab.h>
  18 #include <linux/notifier.h>
  19 #include <net/mac80211.h>
  20 #include <net/cfg80211.h>
  21 #include "ieee80211_i.h"
  22 #include "rate.h"
  23 #include "debugfs.h"
  24 #include "debugfs_netdev.h"
  25 #include "driver-ops.h"
  26
  27 static ssize_t ieee80211_if_read(
  28         struct ieee80211_sub_if_data *sdata,
  29         char __user *userbuf,
  30         size_t count, loff_t *ppos,
  31         ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
  32 {
  33         char buf[200];
  34         ssize_t ret = -EINVAL;
  35
  36         read_lock(&dev_base_lock);
  37         ret = (*format)(sdata, buf, sizeof(buf));
  38         read_unlock(&dev_base_lock);
  39
  40         if (ret >= 0)
  41                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
  42
  43         return ret;
  44 }
  45
  46 static ssize_t ieee80211_if_write(
  47         struct ieee80211_sub_if_data *sdata,
  48         const char __user *userbuf,
  49         size_t count, loff_t *ppos,
  50         ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int))
  51 {
  52         char buf[64];
  53         ssize_t ret;
  54
  55         if (count >= sizeof(buf))
  56                 return -E2BIG;
  57
  58         if (copy_from_user(buf, userbuf, count))
  59                 return -EFAULT;
  60         buf[count] = '\0';
  61
  62         ret = -ENODEV;
  63         rtnl_lock();
  64         ret = (*write)(sdata, buf, count);
  65         rtnl_unlock();
  66
  67         return ret;
  68 }
  69
  70 #define IEEE80211_IF_FMT(name, field, format_string)                    \
  71 static ssize_t ieee80211_if_fmt_##name(                                 \
  72         const struct ieee80211_sub_if_data *sdata, char *buf,           \
  73         int buflen)                                                     \
  74 {                                                                       \
  75         return scnprintf(buf, buflen, format_string, sdata->field);     \
  76 }
  77 #define IEEE80211_IF_FMT_DEC(name, field)                               \
  78                 IEEE80211_IF_FMT(name, field, "%d\n")
  79 #define IEEE80211_IF_FMT_HEX(name, field)                               \
  80                 IEEE80211_IF_FMT(name, field, "%#x\n")
  81 #define IEEE80211_IF_FMT_LHEX(name, field)                              \
  82                 IEEE80211_IF_FMT(name, field, "%#lx\n")
  83 #define IEEE80211_IF_FMT_SIZE(name, field)                              \
  84                 IEEE80211_IF_FMT(name, field, "%zd\n")
  85
  86 #define IEEE80211_IF_FMT_HEXARRAY(name, field)                          \
  87 static ssize_t ieee80211_if_fmt_##name(                                 \
  88         const struct ieee80211_sub_if_data *sdata,                      \
  89         char *buf, int buflen)                                          \
  90 {                                                                       \
  91         char *p = buf;                                                  \
  92         int i;                                                          \
  93         for (i = 0; i < sizeof(sdata->field); i++) {                    \
  94                 p += scnprintf(p, buflen + buf - p, "%.2x ",            \
  95                                  sdata->field[i]);                      \
  96         }                                                               \
  97         p += scnprintf(p, buflen + buf - p, "\n");                      \
  98         return p - buf;                                                 \
  99 }
 100
 101 #define IEEE80211_IF_FMT_ATOMIC(name, field)                            \
 102 static ssize_t ieee80211_if_fmt_##name(                                 \
 103         const struct ieee80211_sub_if_data *sdata,                      \
 104         char *buf, int buflen)                                          \
 105 {                                                                       \
 106         return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
 107 }
 108
 109 #define IEEE80211_IF_FMT_MAC(name, field)                               \
 110 static ssize_t ieee80211_if_fmt_##name(                                 \
 111         const struct ieee80211_sub_if_data *sdata, char *buf,           \
 112         int buflen)                                                     \
 113 {                                                                       \
 114         return scnprintf(buf, buflen, "%pM\n", sdata->field);           \
 115 }
 116
 117 #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, field)                     \
 118 static ssize_t ieee80211_if_fmt_##name(                                 \
 119         const struct ieee80211_sub_if_data *sdata,                      \
 120         char *buf, int buflen)                                          \
 121 {                                                                       \
 122         return scnprintf(buf, buflen, "%d\n",                           \
 123                          jiffies_to_msecs(sdata->field));               \
 124 }
 125
 126 #define _IEEE80211_IF_FILE_OPS(name, _read, _write)                     \
 127 static const struct file_operations name##_ops = {                      \
 128         .read = (_read),                                                \
 129         .write = (_write),                                              \
 130         .open = simple_open,                                            \
 131         .llseek = generic_file_llseek,                                  \
 132 }
 133
 134 #define _IEEE80211_IF_FILE_R_FN(name)                                   \
 135 static ssize_t ieee80211_if_read_##name(struct file *file,              \
 136                                         char __user *userbuf,           \
 137                                         size_t count, loff_t *ppos)     \
 138 {                                                                       \
 139         return ieee80211_if_read(file->private_data,                    \
 140                                  userbuf, count, ppos,                  \
 141                                  ieee80211_if_fmt_##name);              \
 142 }
 143
 144 #define _IEEE80211_IF_FILE_W_FN(name)                                   \
 145 static ssize_t ieee80211_if_write_##name(struct file *file,             \
 146                                          const char __user *userbuf,    \
 147                                          size_t count, loff_t *ppos)    \
 148 {                                                                       \
 149         return ieee80211_if_write(file->private_data, userbuf, count,   \
 150                                   ppos, ieee80211_if_parse_##name);     \
 151 }
 152
 153 #define IEEE80211_IF_FILE_R(name)                                       \
 154         _IEEE80211_IF_FILE_R_FN(name)                                   \
 155         _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL)
 156
 157 #define IEEE80211_IF_FILE_W(name)                                       \
 158         _IEEE80211_IF_FILE_W_FN(name)                                   \
 159         _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name)
 160
 161 #define IEEE80211_IF_FILE_RW(name)                                      \
 162         _IEEE80211_IF_FILE_R_FN(name)                                   \
 163         _IEEE80211_IF_FILE_W_FN(name)                                   \
 164         _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name,          \
 165                                ieee80211_if_write_##name)
 166
 167 #define IEEE80211_IF_FILE(name, field, format)                          \
 168         IEEE80211_IF_FMT_##format(name, field)                          \
 169         IEEE80211_IF_FILE_R(name)
 170
 171 /* common attributes */
 172 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[NL80211_BAND_2GHZ],
 173                   HEX);
 174 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[NL80211_BAND_5GHZ],
 175                   HEX);
 176 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz,
 177                   rc_rateidx_mcs_mask[NL80211_BAND_2GHZ], HEXARRAY);
 178 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz,
 179                   rc_rateidx_mcs_mask[NL80211_BAND_5GHZ], HEXARRAY);
 180
 181 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz(
 182                                 const struct ieee80211_sub_if_data *sdata,
 183                                 char *buf, int buflen)
 184 {
 185         int i, len = 0;
 186         const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_2GHZ];
 187
 188         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
 189                 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]);
 190         len += scnprintf(buf + len, buflen - len, "\n");
 191
 192         return len;
 193 }
 194
 195 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz);
 196
 197 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz(
 198                                 const struct ieee80211_sub_if_data *sdata,
 199                                 char *buf, int buflen)
 200 {
 201         int i, len = 0;
 202         const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_5GHZ];
 203
 204         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
 205                 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]);
 206         len += scnprintf(buf + len, buflen - len, "\n");
 207
 208         return len;
 209 }
 210
 211 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz);
 212
 213 IEEE80211_IF_FILE(flags, flags, HEX);
 214 IEEE80211_IF_FILE(state, state, LHEX);
 215 IEEE80211_IF_FILE(txpower, vif.bss_conf.txpower, DEC);
 216 IEEE80211_IF_FILE(ap_power_level, ap_power_level, DEC);
 217 IEEE80211_IF_FILE(user_power_level, user_power_level, DEC);
 218
 219 static ssize_t
 220 ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata,
 221                            char *buf, int buflen)
 222 {
 223         int len;
 224
 225         len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d\n",
 226                         sdata->vif.hw_queue[IEEE80211_AC_VO],
 227                         sdata->vif.hw_queue[IEEE80211_AC_VI],
 228                         sdata->vif.hw_queue[IEEE80211_AC_BE],
 229                         sdata->vif.hw_queue[IEEE80211_AC_BK]);
 230
 231         if (sdata->vif.type == NL80211_IFTYPE_AP)
 232                 len += scnprintf(buf + len, buflen - len, "cab queue: %d\n",
 233                                  sdata->vif.cab_queue);
 234
 235         return len;
 236 }
 237 IEEE80211_IF_FILE_R(hw_queues);
 238
 239 /* STA attributes */
 240 IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
 241 IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
 242 IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS);
 243
 244 static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
 245                               enum ieee80211_smps_mode smps_mode)
 246 {
 247         struct ieee80211_local *local = sdata->local;
 248         int err;
 249
 250         if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) &&
 251             smps_mode == IEEE80211_SMPS_STATIC)
 252                 return -EINVAL;
 253
 254         /* auto should be dynamic if in PS mode */
 255         if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) &&
 256             (smps_mode == IEEE80211_SMPS_DYNAMIC ||
 257              smps_mode == IEEE80211_SMPS_AUTOMATIC))
 258                 return -EINVAL;
 259
 260         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 261             sdata->vif.type != NL80211_IFTYPE_AP)
 262                 return -EOPNOTSUPP;
 263
 264         sdata_lock(sdata);
 265         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 266                 err = __ieee80211_request_smps_mgd(sdata, smps_mode);
 267         else
 268                 err = __ieee80211_request_smps_ap(sdata, smps_mode);
 269         sdata_unlock(sdata);
 270
 271         return err;
 272 }
 273
 274 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 275         [IEEE80211_SMPS_AUTOMATIC] = "auto",
 276         [IEEE80211_SMPS_OFF] = "off",
 277         [IEEE80211_SMPS_STATIC] = "static",
 278         [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 279 };
 280
 281 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
 282                                      char *buf, int buflen)
 283 {
 284         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 285                 return snprintf(buf, buflen, "request: %s\nused: %s\n",
 286                                 smps_modes[sdata->u.mgd.req_smps],
 287                                 smps_modes[sdata->smps_mode]);
 288         if (sdata->vif.type == NL80211_IFTYPE_AP)
 289                 return snprintf(buf, buflen, "request: %s\nused: %s\n",
 290                                 smps_modes[sdata->u.ap.req_smps],
 291                                 smps_modes[sdata->smps_mode]);
 292         return -EINVAL;
 293 }
 294
 295 static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
 296                                        const char *buf, int buflen)
 297 {
 298         enum ieee80211_smps_mode mode;
 299
 300         for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
 301                 if (strncmp(buf, smps_modes[mode], buflen) == 0) {
 302                         int err = ieee80211_set_smps(sdata, mode);
 303                         if (!err)
 304                                 return buflen;
 305                         return err;
 306                 }
 307         }
 308
 309         return -EINVAL;
 310 }
 311 IEEE80211_IF_FILE_RW(smps);
 312
 313 static ssize_t ieee80211_if_parse_tkip_mic_test(
 314         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 315 {
 316         struct ieee80211_local *local = sdata->local;
 317         u8 addr[ETH_ALEN];
 318         struct sk_buff *skb;
 319         struct ieee80211_hdr *hdr;
 320         __le16 fc;
 321
 322         if (!mac_pton(buf, addr))
 323                 return -EINVAL;
 324
 325         if (!ieee80211_sdata_running(sdata))
 326                 return -ENOTCONN;
 327
 328         skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100);
 329         if (!skb)
 330                 return -ENOMEM;
 331         skb_reserve(skb, local->hw.extra_tx_headroom);
 332
 333         hdr = (struct ieee80211_hdr *) skb_put(skb, 24);
 334         memset(hdr, 0, 24);
 335         fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
 336
 337         switch (sdata->vif.type) {
 338         case NL80211_IFTYPE_AP:
 339                 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
 340                 /* DA BSSID SA */
 341                 memcpy(hdr->addr1, addr, ETH_ALEN);
 342                 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
 343                 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN);
 344                 break;
 345         case NL80211_IFTYPE_STATION:
 346                 fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
 347                 /* BSSID SA DA */
 348                 sdata_lock(sdata);
 349                 if (!sdata->u.mgd.associated) {
 350                         sdata_unlock(sdata);
 351                         dev_kfree_skb(skb);
 352                         return -ENOTCONN;
 353                 }
 354                 memcpy(hdr->addr1, sdata->u.mgd.associated->bssid, ETH_ALEN);
 355                 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
 356                 memcpy(hdr->addr3, addr, ETH_ALEN);
 357                 sdata_unlock(sdata);
 358                 break;
 359         default:
 360                 dev_kfree_skb(skb);
 361                 return -EOPNOTSUPP;
 362         }
 363         hdr->frame_control = fc;
 364
 365         /*
 366          * Add some length to the test frame to make it look bit more valid.
 367          * The exact contents does not matter since the recipient is required
 368          * to drop this because of the Michael MIC failure.
 369          */
 370         memset(skb_put(skb, 50), 0, 50);
 371
 372         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE;
 373
 374         ieee80211_tx_skb(sdata, skb);
 375
 376         return buflen;
 377 }
 378 IEEE80211_IF_FILE_W(tkip_mic_test);
 379
 380 static ssize_t ieee80211_if_parse_beacon_loss(
 381         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 382 {
 383         if (!ieee80211_sdata_running(sdata) || !sdata->vif.bss_conf.assoc)
 384                 return -ENOTCONN;
 385
 386         ieee80211_beacon_loss(&sdata->vif);
 387
 388         return buflen;
 389 }
 390 IEEE80211_IF_FILE_W(beacon_loss);
 391
 392 static ssize_t ieee80211_if_fmt_uapsd_queues(
 393         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 394 {
 395         const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 396
 397         return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues);
 398 }
 399
 400 static ssize_t ieee80211_if_parse_uapsd_queues(
 401         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 402 {
 403         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 404         u8 val;
 405         int ret;
 406
 407         ret = kstrtou8(buf, 0, &val);
 408         if (ret)
 409                 return ret;
 410
 411         if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
 412                 return -ERANGE;
 413
 414         ifmgd->uapsd_queues = val;
 415
 416         return buflen;
 417 }
 418 IEEE80211_IF_FILE_RW(uapsd_queues);
 419
 420 static ssize_t ieee80211_if_fmt_uapsd_max_sp_len(
 421         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 422 {
 423         const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 424
 425         return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len);
 426 }
 427
 428 static ssize_t ieee80211_if_parse_uapsd_max_sp_len(
 429         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 430 {
 431         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 432         unsigned long val;
 433         int ret;
 434
 435         ret = kstrtoul(buf, 0, &val);
 436         if (ret)
 437                 return -EINVAL;
 438
 439         if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
 440                 return -ERANGE;
 441
 442         ifmgd->uapsd_max_sp_len = val;
 443
 444         return buflen;
 445 }
 446 IEEE80211_IF_FILE_RW(uapsd_max_sp_len);
 447
 448 static ssize_t ieee80211_if_fmt_tdls_wider_bw(
 449         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 450 {
 451         const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 452         bool tdls_wider_bw;
 453
 454         tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) &&
 455                         !ifmgd->tdls_wider_bw_prohibited;
 456
 457         return snprintf(buf, buflen, "%d\n", tdls_wider_bw);
 458 }
 459
 460 static ssize_t ieee80211_if_parse_tdls_wider_bw(
 461         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 462 {
 463         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 464         u8 val;
 465         int ret;
 466
 467         ret = kstrtou8(buf, 0, &val);
 468         if (ret)
 469                 return ret;
 470
 471         ifmgd->tdls_wider_bw_prohibited = !val;
 472         return buflen;
 473 }
 474 IEEE80211_IF_FILE_RW(tdls_wider_bw);
 475
 476 /* AP attributes */
 477 IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC);
 478 IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC);
 479 IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC);
 480
 481 static ssize_t ieee80211_if_fmt_num_buffered_multicast(
 482         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 483 {
 484         return scnprintf(buf, buflen, "%u\n",
 485                          skb_queue_len(&sdata->u.ap.ps.bc_buf));
 486 }
 487 IEEE80211_IF_FILE_R(num_buffered_multicast);
 488
 489 static ssize_t ieee80211_if_fmt_aqm(
 490         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 491 {
 492         struct ieee80211_local *local = sdata->local;
 493         struct txq_info *txqi = to_txq_info(sdata->vif.txq);
 494         int len;
 495
 496         spin_lock_bh(&local->fq.lock);
 497         rcu_read_lock();
 498
 499         len = scnprintf(buf,
 500                         buflen,
 501                         "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n"
 502                         "%u %u %u %u %u %u %u %u %u %u\n",
 503                         txqi->txq.ac,
 504                         txqi->tin.backlog_bytes,
 505                         txqi->tin.backlog_packets,
 506                         txqi->tin.flows,
 507                         txqi->cstats.drop_count,
 508                         txqi->cstats.ecn_mark,
 509                         txqi->tin.overlimit,
 510                         txqi->tin.collisions,
 511                         txqi->tin.tx_bytes,
 512                         txqi->tin.tx_packets);
 513
 514         rcu_read_unlock();
 515         spin_unlock_bh(&local->fq.lock);
 516
 517         return len;
 518 }
 519 IEEE80211_IF_FILE_R(aqm);
 520
 521 /* IBSS attributes */
 522 static ssize_t ieee80211_if_fmt_tsf(
 523         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 524 {
 525         struct ieee80211_local *local = sdata->local;
 526         u64 tsf;
 527
 528         tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata);
 529
 530         return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf);
 531 }
 532
 533 static ssize_t ieee80211_if_parse_tsf(
 534         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 535 {
 536         struct ieee80211_local *local = sdata->local;
 537         unsigned long long tsf;
 538         int ret;
 539         int tsf_is_delta = 0;
 540
 541         if (strncmp(buf, "reset", 5) == 0) {
 542                 if (local->ops->reset_tsf) {
 543                         drv_reset_tsf(local, sdata);
 544                         wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
 545                 }
 546         } else {
 547                 if (buflen > 10 && buf[1] == '=') {
 548                         if (buf[0] == '+')
 549                                 tsf_is_delta = 1;
 550                         else if (buf[0] == '-')
 551                                 tsf_is_delta = -1;
 552                         else
 553                                 return -EINVAL;
 554                         buf += 2;
 555                 }
 556                 ret = kstrtoull(buf, 10, &tsf);
 557                 if (ret < 0)
 558                         return ret;
 559                 if (tsf_is_delta && local->ops->offset_tsf) {
 560                         drv_offset_tsf(local, sdata, tsf_is_delta * tsf);
 561                         wiphy_info(local->hw.wiphy,
 562                                    "debugfs offset TSF by %018lld\n",
 563                                    tsf_is_delta * tsf);
 564                 } else if (local->ops->set_tsf) {
 565                         if (tsf_is_delta)
 566                                 tsf = drv_get_tsf(local, sdata) +
 567                                       tsf_is_delta * tsf;
 568                         drv_set_tsf(local, sdata, tsf);
 569                         wiphy_info(local->hw.wiphy,
 570                                    "debugfs set TSF to %#018llx\n", tsf);
 571                 }
 572         }
 573
 574         ieee80211_recalc_dtim(local, sdata);
 575         return buflen;
 576 }
 577 IEEE80211_IF_FILE_RW(tsf);
 578
 579
 580 /* WDS attributes */
 581 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
 582
 583 #ifdef CONFIG_MAC80211_MESH
 584 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC);
 585
 586 /* Mesh stats attributes */
 587 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
 588 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
 589 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
 590 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
 591 IEEE80211_IF_FILE(dropped_frames_congestion,
 592                   u.mesh.mshstats.dropped_frames_congestion, DEC);
 593 IEEE80211_IF_FILE(dropped_frames_no_route,
 594                   u.mesh.mshstats.dropped_frames_no_route, DEC);
 595
 596 /* Mesh parameters */
 597 IEEE80211_IF_FILE(dot11MeshMaxRetries,
 598                   u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
 599 IEEE80211_IF_FILE(dot11MeshRetryTimeout,
 600                   u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
 601 IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
 602                   u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
 603 IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
 604                   u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
 605 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
 606 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC);
 607 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
 608 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
 609                   u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
 610 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
 611                   u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
 612 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
 613                   u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
 614 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval,
 615                   u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC);
 616 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
 617                   u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
 618 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
 619                   u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
 620 IEEE80211_IF_FILE(path_refresh_time,
 621                   u.mesh.mshcfg.path_refresh_time, DEC);
 622 IEEE80211_IF_FILE(min_discovery_timeout,
 623                   u.mesh.mshcfg.min_discovery_timeout, DEC);
 624 IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
 625                   u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
 626 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,
 627                   u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC);
 628 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
 629                   u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
 630 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC);
 631 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC);
 632 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC);
 633 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout,
 634                   u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC);
 635 IEEE80211_IF_FILE(dot11MeshHWMProotInterval,
 636                   u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC);
 637 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval,
 638                   u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC);
 639 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC);
 640 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration,
 641                   u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC);
 642 #endif
 643
 644 #define DEBUGFS_ADD_MODE(name, mode) \
 645         debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \
 646                             sdata, &name##_ops);
 647
 648 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400)
 649
 650 static void add_common_files(struct ieee80211_sub_if_data *sdata)
 651 {
 652         DEBUGFS_ADD(rc_rateidx_mask_2ghz);
 653         DEBUGFS_ADD(rc_rateidx_mask_5ghz);
 654         DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
 655         DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
 656         DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz);
 657         DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz);
 658         DEBUGFS_ADD(hw_queues);
 659
 660         if (sdata->local->ops->wake_tx_queue)
 661                 DEBUGFS_ADD(aqm);
 662 }
 663
 664 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
 665 {
 666         DEBUGFS_ADD(bssid);
 667         DEBUGFS_ADD(aid);
 668         DEBUGFS_ADD(beacon_timeout);
 669         DEBUGFS_ADD_MODE(smps, 0600);
 670         DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
 671         DEBUGFS_ADD_MODE(beacon_loss, 0200);
 672         DEBUGFS_ADD_MODE(uapsd_queues, 0600);
 673         DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600);
 674         DEBUGFS_ADD_MODE(tdls_wider_bw, 0600);
 675 }
 676
 677 static void add_ap_files(struct ieee80211_sub_if_data *sdata)
 678 {
 679         DEBUGFS_ADD(num_mcast_sta);
 680         DEBUGFS_ADD_MODE(smps, 0600);
 681         DEBUGFS_ADD(num_sta_ps);
 682         DEBUGFS_ADD(dtim_count);
 683         DEBUGFS_ADD(num_buffered_multicast);
 684         DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
 685 }
 686
 687 static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
 688 {
 689         DEBUGFS_ADD_MODE(tsf, 0600);
 690 }
 691
 692 static void add_wds_files(struct ieee80211_sub_if_data *sdata)
 693 {
 694         DEBUGFS_ADD(peer);
 695 }
 696
 697 #ifdef CONFIG_MAC80211_MESH
 698
 699 static void add_mesh_files(struct ieee80211_sub_if_data *sdata)
 700 {
 701         DEBUGFS_ADD_MODE(tsf, 0600);
 702         DEBUGFS_ADD_MODE(estab_plinks, 0400);
 703 }
 704
 705 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
 706 {
 707         struct dentry *dir = debugfs_create_dir("mesh_stats",
 708                                                 sdata->vif.debugfs_dir);
 709 #define MESHSTATS_ADD(name)\
 710         debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
 711
 712         MESHSTATS_ADD(fwded_mcast);
 713         MESHSTATS_ADD(fwded_unicast);
 714         MESHSTATS_ADD(fwded_frames);
 715         MESHSTATS_ADD(dropped_frames_ttl);
 716         MESHSTATS_ADD(dropped_frames_no_route);
 717         MESHSTATS_ADD(dropped_frames_congestion);
 718 #undef MESHSTATS_ADD
 719 }
 720
 721 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
 722 {
 723         struct dentry *dir = debugfs_create_dir("mesh_config",
 724                                                 sdata->vif.debugfs_dir);
 725
 726 #define MESHPARAMS_ADD(name) \
 727         debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
 728
 729         MESHPARAMS_ADD(dot11MeshMaxRetries);
 730         MESHPARAMS_ADD(dot11MeshRetryTimeout);
 731         MESHPARAMS_ADD(dot11MeshConfirmTimeout);
 732         MESHPARAMS_ADD(dot11MeshHoldingTimeout);
 733         MESHPARAMS_ADD(dot11MeshTTL);
 734         MESHPARAMS_ADD(element_ttl);
 735         MESHPARAMS_ADD(auto_open_plinks);
 736         MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
 737         MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
 738         MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
 739         MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval);
 740         MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
 741         MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
 742         MESHPARAMS_ADD(path_refresh_time);
 743         MESHPARAMS_ADD(min_discovery_timeout);
 744         MESHPARAMS_ADD(dot11MeshHWMPRootMode);
 745         MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
 746         MESHPARAMS_ADD(dot11MeshForwarding);
 747         MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);
 748         MESHPARAMS_ADD(rssi_threshold);
 749         MESHPARAMS_ADD(ht_opmode);
 750         MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout);
 751         MESHPARAMS_ADD(dot11MeshHWMProotInterval);
 752         MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval);
 753         MESHPARAMS_ADD(power_mode);
 754         MESHPARAMS_ADD(dot11MeshAwakeWindowDuration);
 755 #undef MESHPARAMS_ADD
 756 }
 757 #endif
 758
 759 static void add_files(struct ieee80211_sub_if_data *sdata)
 760 {
 761         if (!sdata->vif.debugfs_dir)
 762                 return;
 763
 764         DEBUGFS_ADD(flags);
 765         DEBUGFS_ADD(state);
 766         DEBUGFS_ADD(txpower);
 767         DEBUGFS_ADD(user_power_level);
 768         DEBUGFS_ADD(ap_power_level);
 769
 770         if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
 771                 add_common_files(sdata);
 772
 773         switch (sdata->vif.type) {
 774         case NL80211_IFTYPE_MESH_POINT:
 775 #ifdef CONFIG_MAC80211_MESH
 776                 add_mesh_files(sdata);
 777                 add_mesh_stats(sdata);
 778                 add_mesh_config(sdata);
 779 #endif
 780                 break;
 781         case NL80211_IFTYPE_STATION:
 782                 add_sta_files(sdata);
 783                 break;
 784         case NL80211_IFTYPE_ADHOC:
 785                 add_ibss_files(sdata);
 786                 break;
 787         case NL80211_IFTYPE_AP:
 788                 add_ap_files(sdata);
 789                 break;
 790         case NL80211_IFTYPE_WDS:
 791                 add_wds_files(sdata);
 792                 break;
 793         default:
 794                 break;
 795         }
 796 }
 797
 798 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
 799 {
 800         char buf[10+IFNAMSIZ];
 801
 802         sprintf(buf, "netdev:%s", sdata->name);
 803         sdata->vif.debugfs_dir = debugfs_create_dir(buf,
 804                 sdata->local->hw.wiphy->debugfsdir);
 805         if (sdata->vif.debugfs_dir)
 806                 sdata->debugfs.subdir_stations = debugfs_create_dir("stations",
 807                         sdata->vif.debugfs_dir);
 808         add_files(sdata);
 809 }
 810
 811 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
 812 {
 813         if (!sdata->vif.debugfs_dir)
 814                 return;
 815
 816         debugfs_remove_recursive(sdata->vif.debugfs_dir);
 817         sdata->vif.debugfs_dir = NULL;
 818         sdata->debugfs.subdir_stations = NULL;
 819 }
 820
 821 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
 822 {
 823         struct dentry *dir;
 824         char buf[10 + IFNAMSIZ];
 825
 826         dir = sdata->vif.debugfs_dir;
 827
 828         if (!dir)
 829                 return;
 830
 831         sprintf(buf, "netdev:%s", sdata->name);
 832         if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
 833                 sdata_err(sdata,
 834                           "debugfs: failed to rename debugfs dir to %s\n",
 835                           buf);
 836 }