net/mac80211/debugfs_netdev.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2006   Jiri Benc <jbenc@suse.cz>
   4  * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright (C) 2020 Intel Corporation
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/device.h>
  10 #include <linux/if.h>
  11 #include <linux/if_ether.h>
  12 #include <linux/interrupt.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/rtnetlink.h>
  15 #include <linux/slab.h>
  16 #include <linux/notifier.h>
  17 #include <net/mac80211.h>
  18 #include <net/cfg80211.h>
  19 #include "ieee80211_i.h"
  20 #include "rate.h"
  21 #include "debugfs.h"
  22 #include "debugfs_netdev.h"
  23 #include "driver-ops.h"
  24
  25 static ssize_t ieee80211_if_read(
  26         struct ieee80211_sub_if_data *sdata,
  27         char __user *userbuf,
  28         size_t count, loff_t *ppos,
  29         ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
  30 {
  31         char buf[200];
  32         ssize_t ret = -EINVAL;
  33
  34         read_lock(&dev_base_lock);
  35         ret = (*format)(sdata, buf, sizeof(buf));
  36         read_unlock(&dev_base_lock);
  37
  38         if (ret >= 0)
  39                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
  40
  41         return ret;
  42 }
  43
  44 static ssize_t ieee80211_if_write(
  45         struct ieee80211_sub_if_data *sdata,
  46         const char __user *userbuf,
  47         size_t count, loff_t *ppos,
  48         ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int))
  49 {
  50         char buf[64];
  51         ssize_t ret;
  52
  53         if (count >= sizeof(buf))
  54                 return -E2BIG;
  55
  56         if (copy_from_user(buf, userbuf, count))
  57                 return -EFAULT;
  58         buf[count] = '\0';
  59
  60         rtnl_lock();
  61         ret = (*write)(sdata, buf, count);
  62         rtnl_unlock();
  63
  64         return ret;
  65 }
  66
  67 #define IEEE80211_IF_FMT(name, field, format_string)                    \
  68 static ssize_t ieee80211_if_fmt_##name(                                 \
  69         const struct ieee80211_sub_if_data *sdata, char *buf,           \
  70         int buflen)                                                     \
  71 {                                                                       \
  72         return scnprintf(buf, buflen, format_string, sdata->field);     \
  73 }
  74 #define IEEE80211_IF_FMT_DEC(name, field)                               \
  75                 IEEE80211_IF_FMT(name, field, "%d\n")
  76 #define IEEE80211_IF_FMT_HEX(name, field)                               \
  77                 IEEE80211_IF_FMT(name, field, "%#x\n")
  78 #define IEEE80211_IF_FMT_LHEX(name, field)                              \
  79                 IEEE80211_IF_FMT(name, field, "%#lx\n")
  80 #define IEEE80211_IF_FMT_SIZE(name, field)                              \
  81                 IEEE80211_IF_FMT(name, field, "%zd\n")
  82
  83 #define IEEE80211_IF_FMT_HEXARRAY(name, field)                          \
  84 static ssize_t ieee80211_if_fmt_##name(                                 \
  85         const struct ieee80211_sub_if_data *sdata,                      \
  86         char *buf, int buflen)                                          \
  87 {                                                                       \
  88         char *p = buf;                                                  \
  89         int i;                                                          \
  90         for (i = 0; i < sizeof(sdata->field); i++) {                    \
  91                 p += scnprintf(p, buflen + buf - p, "%.2x ",            \
  92                                  sdata->field[i]);                      \
  93         }                                                               \
  94         p += scnprintf(p, buflen + buf - p, "\n");                      \
  95         return p - buf;                                                 \
  96 }
  97
  98 #define IEEE80211_IF_FMT_ATOMIC(name, field)                            \
  99 static ssize_t ieee80211_if_fmt_##name(                                 \
 100         const struct ieee80211_sub_if_data *sdata,                      \
 101         char *buf, int buflen)                                          \
 102 {                                                                       \
 103         return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
 104 }
 105
 106 #define IEEE80211_IF_FMT_MAC(name, field)                               \
 107 static ssize_t ieee80211_if_fmt_##name(                                 \
 108         const struct ieee80211_sub_if_data *sdata, char *buf,           \
 109         int buflen)                                                     \
 110 {                                                                       \
 111         return scnprintf(buf, buflen, "%pM\n", sdata->field);           \
 112 }
 113
 114 #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, field)                     \
 115 static ssize_t ieee80211_if_fmt_##name(                                 \
 116         const struct ieee80211_sub_if_data *sdata,                      \
 117         char *buf, int buflen)                                          \
 118 {                                                                       \
 119         return scnprintf(buf, buflen, "%d\n",                           \
 120                          jiffies_to_msecs(sdata->field));               \
 121 }
 122
 123 #define _IEEE80211_IF_FILE_OPS(name, _read, _write)                     \
 124 static const struct file_operations name##_ops = {                      \
 125         .read = (_read),                                                \
 126         .write = (_write),                                              \
 127         .open = simple_open,                                            \
 128         .llseek = generic_file_llseek,                                  \
 129 }
 130
 131 #define _IEEE80211_IF_FILE_R_FN(name)                                   \
 132 static ssize_t ieee80211_if_read_##name(struct file *file,              \
 133                                         char __user *userbuf,           \
 134                                         size_t count, loff_t *ppos)     \
 135 {                                                                       \
 136         return ieee80211_if_read(file->private_data,                    \
 137                                  userbuf, count, ppos,                  \
 138                                  ieee80211_if_fmt_##name);              \
 139 }
 140
 141 #define _IEEE80211_IF_FILE_W_FN(name)                                   \
 142 static ssize_t ieee80211_if_write_##name(struct file *file,             \
 143                                          const char __user *userbuf,    \
 144                                          size_t count, loff_t *ppos)    \
 145 {                                                                       \
 146         return ieee80211_if_write(file->private_data, userbuf, count,   \
 147                                   ppos, ieee80211_if_parse_##name);     \
 148 }
 149
 150 #define IEEE80211_IF_FILE_R(name)                                       \
 151         _IEEE80211_IF_FILE_R_FN(name)                                   \
 152         _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL)
 153
 154 #define IEEE80211_IF_FILE_W(name)                                       \
 155         _IEEE80211_IF_FILE_W_FN(name)                                   \
 156         _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name)
 157
 158 #define IEEE80211_IF_FILE_RW(name)                                      \
 159         _IEEE80211_IF_FILE_R_FN(name)                                   \
 160         _IEEE80211_IF_FILE_W_FN(name)                                   \
 161         _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name,          \
 162                                ieee80211_if_write_##name)
 163
 164 #define IEEE80211_IF_FILE(name, field, format)                          \
 165         IEEE80211_IF_FMT_##format(name, field)                          \
 166         IEEE80211_IF_FILE_R(name)
 167
 168 /* common attributes */
 169 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[NL80211_BAND_2GHZ],
 170                   HEX);
 171 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[NL80211_BAND_5GHZ],
 172                   HEX);
 173 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz,
 174                   rc_rateidx_mcs_mask[NL80211_BAND_2GHZ], HEXARRAY);
 175 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz,
 176                   rc_rateidx_mcs_mask[NL80211_BAND_5GHZ], HEXARRAY);
 177
 178 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz(
 179                                 const struct ieee80211_sub_if_data *sdata,
 180                                 char *buf, int buflen)
 181 {
 182         int i, len = 0;
 183         const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_2GHZ];
 184
 185         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
 186                 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]);
 187         len += scnprintf(buf + len, buflen - len, "\n");
 188
 189         return len;
 190 }
 191
 192 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz);
 193
 194 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz(
 195                                 const struct ieee80211_sub_if_data *sdata,
 196                                 char *buf, int buflen)
 197 {
 198         int i, len = 0;
 199         const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_5GHZ];
 200
 201         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
 202                 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]);
 203         len += scnprintf(buf + len, buflen - len, "\n");
 204
 205         return len;
 206 }
 207
 208 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz);
 209
 210 IEEE80211_IF_FILE(flags, flags, HEX);
 211 IEEE80211_IF_FILE(state, state, LHEX);
 212 IEEE80211_IF_FILE(txpower, vif.bss_conf.txpower, DEC);
 213 IEEE80211_IF_FILE(ap_power_level, ap_power_level, DEC);
 214 IEEE80211_IF_FILE(user_power_level, user_power_level, DEC);
 215
 216 static ssize_t
 217 ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata,
 218                            char *buf, int buflen)
 219 {
 220         int len;
 221
 222         len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d\n",
 223                         sdata->vif.hw_queue[IEEE80211_AC_VO],
 224                         sdata->vif.hw_queue[IEEE80211_AC_VI],
 225                         sdata->vif.hw_queue[IEEE80211_AC_BE],
 226                         sdata->vif.hw_queue[IEEE80211_AC_BK]);
 227
 228         if (sdata->vif.type == NL80211_IFTYPE_AP)
 229                 len += scnprintf(buf + len, buflen - len, "cab queue: %d\n",
 230                                  sdata->vif.cab_queue);
 231
 232         return len;
 233 }
 234 IEEE80211_IF_FILE_R(hw_queues);
 235
 236 /* STA attributes */
 237 IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
 238 IEEE80211_IF_FILE(aid, vif.bss_conf.aid, DEC);
 239 IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS);
 240
 241 static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
 242                               enum ieee80211_smps_mode smps_mode)
 243 {
 244         struct ieee80211_local *local = sdata->local;
 245         int err;
 246
 247         if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) &&
 248             smps_mode == IEEE80211_SMPS_STATIC)
 249                 return -EINVAL;
 250
 251         /* auto should be dynamic if in PS mode */
 252         if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) &&
 253             (smps_mode == IEEE80211_SMPS_DYNAMIC ||
 254              smps_mode == IEEE80211_SMPS_AUTOMATIC))
 255                 return -EINVAL;
 256
 257         if (sdata->vif.type != NL80211_IFTYPE_STATION)
 258                 return -EOPNOTSUPP;
 259
 260         sdata_lock(sdata);
 261         err = __ieee80211_request_smps_mgd(sdata, smps_mode);
 262         sdata_unlock(sdata);
 263
 264         return err;
 265 }
 266
 267 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 268         [IEEE80211_SMPS_AUTOMATIC] = "auto",
 269         [IEEE80211_SMPS_OFF] = "off",
 270         [IEEE80211_SMPS_STATIC] = "static",
 271         [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 272 };
 273
 274 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
 275                                      char *buf, int buflen)
 276 {
 277         if (sdata->vif.type == NL80211_IFTYPE_STATION)
 278                 return snprintf(buf, buflen, "request: %s\nused: %s\n",
 279                                 smps_modes[sdata->u.mgd.req_smps],
 280                                 smps_modes[sdata->smps_mode]);
 281         return -EINVAL;
 282 }
 283
 284 static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
 285                                        const char *buf, int buflen)
 286 {
 287         enum ieee80211_smps_mode mode;
 288
 289         for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
 290                 if (strncmp(buf, smps_modes[mode], buflen) == 0) {
 291                         int err = ieee80211_set_smps(sdata, mode);
 292                         if (!err)
 293                                 return buflen;
 294                         return err;
 295                 }
 296         }
 297
 298         return -EINVAL;
 299 }
 300 IEEE80211_IF_FILE_RW(smps);
 301
 302 static ssize_t ieee80211_if_parse_tkip_mic_test(
 303         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 304 {
 305         struct ieee80211_local *local = sdata->local;
 306         u8 addr[ETH_ALEN];
 307         struct sk_buff *skb;
 308         struct ieee80211_hdr *hdr;
 309         __le16 fc;
 310
 311         if (!mac_pton(buf, addr))
 312                 return -EINVAL;
 313
 314         if (!ieee80211_sdata_running(sdata))
 315                 return -ENOTCONN;
 316
 317         skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100);
 318         if (!skb)
 319                 return -ENOMEM;
 320         skb_reserve(skb, local->hw.extra_tx_headroom);
 321
 322         hdr = skb_put_zero(skb, 24);
 323         fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
 324
 325         switch (sdata->vif.type) {
 326         case NL80211_IFTYPE_AP:
 327                 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
 328                 /* DA BSSID SA */
 329                 memcpy(hdr->addr1, addr, ETH_ALEN);
 330                 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
 331                 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN);
 332                 break;
 333         case NL80211_IFTYPE_STATION:
 334                 fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
 335                 /* BSSID SA DA */
 336                 sdata_lock(sdata);
 337                 if (!sdata->u.mgd.associated) {
 338                         sdata_unlock(sdata);
 339                         dev_kfree_skb(skb);
 340                         return -ENOTCONN;
 341                 }
 342                 memcpy(hdr->addr1, sdata->u.mgd.associated->bssid, ETH_ALEN);
 343                 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
 344                 memcpy(hdr->addr3, addr, ETH_ALEN);
 345                 sdata_unlock(sdata);
 346                 break;
 347         default:
 348                 dev_kfree_skb(skb);
 349                 return -EOPNOTSUPP;
 350         }
 351         hdr->frame_control = fc;
 352
 353         /*
 354          * Add some length to the test frame to make it look bit more valid.
 355          * The exact contents does not matter since the recipient is required
 356          * to drop this because of the Michael MIC failure.
 357          */
 358         skb_put_zero(skb, 50);
 359
 360         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE;
 361
 362         ieee80211_tx_skb(sdata, skb);
 363
 364         return buflen;
 365 }
 366 IEEE80211_IF_FILE_W(tkip_mic_test);
 367
 368 static ssize_t ieee80211_if_parse_beacon_loss(
 369         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 370 {
 371         if (!ieee80211_sdata_running(sdata) || !sdata->vif.bss_conf.assoc)
 372                 return -ENOTCONN;
 373
 374         ieee80211_beacon_loss(&sdata->vif);
 375
 376         return buflen;
 377 }
 378 IEEE80211_IF_FILE_W(beacon_loss);
 379
 380 static ssize_t ieee80211_if_fmt_uapsd_queues(
 381         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 382 {
 383         const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 384
 385         return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues);
 386 }
 387
 388 static ssize_t ieee80211_if_parse_uapsd_queues(
 389         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 390 {
 391         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 392         u8 val;
 393         int ret;
 394
 395         ret = kstrtou8(buf, 0, &val);
 396         if (ret)
 397                 return ret;
 398
 399         if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
 400                 return -ERANGE;
 401
 402         ifmgd->uapsd_queues = val;
 403
 404         return buflen;
 405 }
 406 IEEE80211_IF_FILE_RW(uapsd_queues);
 407
 408 static ssize_t ieee80211_if_fmt_uapsd_max_sp_len(
 409         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 410 {
 411         const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 412
 413         return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len);
 414 }
 415
 416 static ssize_t ieee80211_if_parse_uapsd_max_sp_len(
 417         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 418 {
 419         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 420         unsigned long val;
 421         int ret;
 422
 423         ret = kstrtoul(buf, 0, &val);
 424         if (ret)
 425                 return -EINVAL;
 426
 427         if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
 428                 return -ERANGE;
 429
 430         ifmgd->uapsd_max_sp_len = val;
 431
 432         return buflen;
 433 }
 434 IEEE80211_IF_FILE_RW(uapsd_max_sp_len);
 435
 436 static ssize_t ieee80211_if_fmt_tdls_wider_bw(
 437         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 438 {
 439         const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 440         bool tdls_wider_bw;
 441
 442         tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) &&
 443                         !ifmgd->tdls_wider_bw_prohibited;
 444
 445         return snprintf(buf, buflen, "%d\n", tdls_wider_bw);
 446 }
 447
 448 static ssize_t ieee80211_if_parse_tdls_wider_bw(
 449         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 450 {
 451         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 452         u8 val;
 453         int ret;
 454
 455         ret = kstrtou8(buf, 0, &val);
 456         if (ret)
 457                 return ret;
 458
 459         ifmgd->tdls_wider_bw_prohibited = !val;
 460         return buflen;
 461 }
 462 IEEE80211_IF_FILE_RW(tdls_wider_bw);
 463
 464 /* AP attributes */
 465 IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC);
 466 IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC);
 467 IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC);
 468 IEEE80211_IF_FILE(num_mcast_sta_vlan, u.vlan.num_mcast_sta, ATOMIC);
 469
 470 static ssize_t ieee80211_if_fmt_num_buffered_multicast(
 471         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 472 {
 473         return scnprintf(buf, buflen, "%u\n",
 474                          skb_queue_len(&sdata->u.ap.ps.bc_buf));
 475 }
 476 IEEE80211_IF_FILE_R(num_buffered_multicast);
 477
 478 static ssize_t ieee80211_if_fmt_aqm(
 479         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 480 {
 481         struct ieee80211_local *local = sdata->local;
 482         struct txq_info *txqi;
 483         int len;
 484
 485         if (!sdata->vif.txq)
 486                 return 0;
 487
 488         txqi = to_txq_info(sdata->vif.txq);
 489
 490         spin_lock_bh(&local->fq.lock);
 491         rcu_read_lock();
 492
 493         len = scnprintf(buf,
 494                         buflen,
 495                         "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n"
 496                         "%u %u %u %u %u %u %u %u %u %u\n",
 497                         txqi->txq.ac,
 498                         txqi->tin.backlog_bytes,
 499                         txqi->tin.backlog_packets,
 500                         txqi->tin.flows,
 501                         txqi->cstats.drop_count,
 502                         txqi->cstats.ecn_mark,
 503                         txqi->tin.overlimit,
 504                         txqi->tin.collisions,
 505                         txqi->tin.tx_bytes,
 506                         txqi->tin.tx_packets);
 507
 508         rcu_read_unlock();
 509         spin_unlock_bh(&local->fq.lock);
 510
 511         return len;
 512 }
 513 IEEE80211_IF_FILE_R(aqm);
 514
 515 static ssize_t ieee80211_if_fmt_airtime(
 516         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 517 {
 518         struct ieee80211_local *local = sdata->local;
 519         struct ieee80211_txq *txq = sdata->vif.txq;
 520         struct airtime_info *air_info;
 521         int len;
 522
 523         if (!txq)
 524                 return 0;
 525
 526         spin_lock_bh(&local->airtime[txq->ac].lock);
 527         air_info = to_airtime_info(txq);
 528         len = scnprintf(buf,
 529                         buflen,
 530                         "RX: %llu us\nTX: %llu us\nWeight: %u\n"
 531                         "Virt-T: %lld us\n",
 532                         air_info->rx_airtime,
 533                         air_info->tx_airtime,
 534                         air_info->weight,
 535                         air_info->v_t);
 536         spin_unlock_bh(&local->airtime[txq->ac].lock);
 537
 538         return len;
 539 }
 540
 541 IEEE80211_IF_FILE_R(airtime);
 542
 543 IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX);
 544
 545 /* IBSS attributes */
 546 static ssize_t ieee80211_if_fmt_tsf(
 547         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 548 {
 549         struct ieee80211_local *local = sdata->local;
 550         u64 tsf;
 551
 552         tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata);
 553
 554         return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf);
 555 }
 556
 557 static ssize_t ieee80211_if_parse_tsf(
 558         struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
 559 {
 560         struct ieee80211_local *local = sdata->local;
 561         unsigned long long tsf;
 562         int ret;
 563         int tsf_is_delta = 0;
 564
 565         if (strncmp(buf, "reset", 5) == 0) {
 566                 if (local->ops->reset_tsf) {
 567                         drv_reset_tsf(local, sdata);
 568                         wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
 569                 }
 570         } else {
 571                 if (buflen > 10 && buf[1] == '=') {
 572                         if (buf[0] == '+')
 573                                 tsf_is_delta = 1;
 574                         else if (buf[0] == '-')
 575                                 tsf_is_delta = -1;
 576                         else
 577                                 return -EINVAL;
 578                         buf += 2;
 579                 }
 580                 ret = kstrtoull(buf, 10, &tsf);
 581                 if (ret < 0)
 582                         return ret;
 583                 if (tsf_is_delta && local->ops->offset_tsf) {
 584                         drv_offset_tsf(local, sdata, tsf_is_delta * tsf);
 585                         wiphy_info(local->hw.wiphy,
 586                                    "debugfs offset TSF by %018lld\n",
 587                                    tsf_is_delta * tsf);
 588                 } else if (local->ops->set_tsf) {
 589                         if (tsf_is_delta)
 590                                 tsf = drv_get_tsf(local, sdata) +
 591                                       tsf_is_delta * tsf;
 592                         drv_set_tsf(local, sdata, tsf);
 593                         wiphy_info(local->hw.wiphy,
 594                                    "debugfs set TSF to %#018llx\n", tsf);
 595                 }
 596         }
 597
 598         ieee80211_recalc_dtim(local, sdata);
 599         return buflen;
 600 }
 601 IEEE80211_IF_FILE_RW(tsf);
 602
 603
 604 #ifdef CONFIG_MAC80211_MESH
 605 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC);
 606
 607 /* Mesh stats attributes */
 608 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
 609 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
 610 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
 611 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
 612 IEEE80211_IF_FILE(dropped_frames_congestion,
 613                   u.mesh.mshstats.dropped_frames_congestion, DEC);
 614 IEEE80211_IF_FILE(dropped_frames_no_route,
 615                   u.mesh.mshstats.dropped_frames_no_route, DEC);
 616
 617 /* Mesh parameters */
 618 IEEE80211_IF_FILE(dot11MeshMaxRetries,
 619                   u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
 620 IEEE80211_IF_FILE(dot11MeshRetryTimeout,
 621                   u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
 622 IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
 623                   u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
 624 IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
 625                   u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
 626 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
 627 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC);
 628 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
 629 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
 630                   u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
 631 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
 632                   u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
 633 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
 634                   u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
 635 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval,
 636                   u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC);
 637 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
 638                   u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
 639 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
 640                   u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
 641 IEEE80211_IF_FILE(path_refresh_time,
 642                   u.mesh.mshcfg.path_refresh_time, DEC);
 643 IEEE80211_IF_FILE(min_discovery_timeout,
 644                   u.mesh.mshcfg.min_discovery_timeout, DEC);
 645 IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
 646                   u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
 647 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,
 648                   u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC);
 649 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
 650                   u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
 651 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC);
 652 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC);
 653 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC);
 654 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout,
 655                   u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC);
 656 IEEE80211_IF_FILE(dot11MeshHWMProotInterval,
 657                   u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC);
 658 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval,
 659                   u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC);
 660 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC);
 661 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration,
 662                   u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC);
 663 IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate,
 664                   u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC);
 665 IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC);
 666 IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer,
 667                   u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC);
 668 #endif
 669
 670 #define DEBUGFS_ADD_MODE(name, mode) \
 671         debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \
 672                             sdata, &name##_ops)
 673
 674 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400)
 675
 676 static void add_common_files(struct ieee80211_sub_if_data *sdata)
 677 {
 678         DEBUGFS_ADD(rc_rateidx_mask_2ghz);
 679         DEBUGFS_ADD(rc_rateidx_mask_5ghz);
 680         DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
 681         DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
 682         DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz);
 683         DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz);
 684         DEBUGFS_ADD(hw_queues);
 685
 686         if (sdata->local->ops->wake_tx_queue &&
 687             sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
 688             sdata->vif.type != NL80211_IFTYPE_NAN) {
 689                 DEBUGFS_ADD(aqm);
 690                 DEBUGFS_ADD(airtime);
 691         }
 692 }
 693
 694 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
 695 {
 696         DEBUGFS_ADD(bssid);
 697         DEBUGFS_ADD(aid);
 698         DEBUGFS_ADD(beacon_timeout);
 699         DEBUGFS_ADD_MODE(smps, 0600);
 700         DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
 701         DEBUGFS_ADD_MODE(beacon_loss, 0200);
 702         DEBUGFS_ADD_MODE(uapsd_queues, 0600);
 703         DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600);
 704         DEBUGFS_ADD_MODE(tdls_wider_bw, 0600);
 705 }
 706
 707 static void add_ap_files(struct ieee80211_sub_if_data *sdata)
 708 {
 709         DEBUGFS_ADD(num_mcast_sta);
 710         DEBUGFS_ADD_MODE(smps, 0600);
 711         DEBUGFS_ADD(num_sta_ps);
 712         DEBUGFS_ADD(dtim_count);
 713         DEBUGFS_ADD(num_buffered_multicast);
 714         DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
 715         DEBUGFS_ADD_MODE(multicast_to_unicast, 0600);
 716 }
 717
 718 static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
 719 {
 720         /* add num_mcast_sta_vlan using name num_mcast_sta */
 721         debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir,
 722                             sdata, &num_mcast_sta_vlan_ops);
 723 }
 724
 725 static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
 726 {
 727         DEBUGFS_ADD_MODE(tsf, 0600);
 728 }
 729
 730 #ifdef CONFIG_MAC80211_MESH
 731
 732 static void add_mesh_files(struct ieee80211_sub_if_data *sdata)
 733 {
 734         DEBUGFS_ADD_MODE(tsf, 0600);
 735         DEBUGFS_ADD_MODE(estab_plinks, 0400);
 736 }
 737
 738 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
 739 {
 740         struct dentry *dir = debugfs_create_dir("mesh_stats",
 741                                                 sdata->vif.debugfs_dir);
 742 #define MESHSTATS_ADD(name)\
 743         debugfs_create_file(#name, 0400, dir, sdata, &name##_ops)
 744
 745         MESHSTATS_ADD(fwded_mcast);
 746         MESHSTATS_ADD(fwded_unicast);
 747         MESHSTATS_ADD(fwded_frames);
 748         MESHSTATS_ADD(dropped_frames_ttl);
 749         MESHSTATS_ADD(dropped_frames_no_route);
 750         MESHSTATS_ADD(dropped_frames_congestion);
 751 #undef MESHSTATS_ADD
 752 }
 753
 754 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
 755 {
 756         struct dentry *dir = debugfs_create_dir("mesh_config",
 757                                                 sdata->vif.debugfs_dir);
 758
 759 #define MESHPARAMS_ADD(name) \
 760         debugfs_create_file(#name, 0600, dir, sdata, &name##_ops)
 761
 762         MESHPARAMS_ADD(dot11MeshMaxRetries);
 763         MESHPARAMS_ADD(dot11MeshRetryTimeout);
 764         MESHPARAMS_ADD(dot11MeshConfirmTimeout);
 765         MESHPARAMS_ADD(dot11MeshHoldingTimeout);
 766         MESHPARAMS_ADD(dot11MeshTTL);
 767         MESHPARAMS_ADD(element_ttl);
 768         MESHPARAMS_ADD(auto_open_plinks);
 769         MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
 770         MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
 771         MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
 772         MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval);
 773         MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
 774         MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
 775         MESHPARAMS_ADD(path_refresh_time);
 776         MESHPARAMS_ADD(min_discovery_timeout);
 777         MESHPARAMS_ADD(dot11MeshHWMPRootMode);
 778         MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
 779         MESHPARAMS_ADD(dot11MeshForwarding);
 780         MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);
 781         MESHPARAMS_ADD(rssi_threshold);
 782         MESHPARAMS_ADD(ht_opmode);
 783         MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout);
 784         MESHPARAMS_ADD(dot11MeshHWMProotInterval);
 785         MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval);
 786         MESHPARAMS_ADD(power_mode);
 787         MESHPARAMS_ADD(dot11MeshAwakeWindowDuration);
 788         MESHPARAMS_ADD(dot11MeshConnectedToMeshGate);
 789         MESHPARAMS_ADD(dot11MeshNolearn);
 790         MESHPARAMS_ADD(dot11MeshConnectedToAuthServer);
 791 #undef MESHPARAMS_ADD
 792 }
 793 #endif
 794
 795 static void add_files(struct ieee80211_sub_if_data *sdata)
 796 {
 797         if (!sdata->vif.debugfs_dir)
 798                 return;
 799
 800         DEBUGFS_ADD(flags);
 801         DEBUGFS_ADD(state);
 802         DEBUGFS_ADD(txpower);
 803         DEBUGFS_ADD(user_power_level);
 804         DEBUGFS_ADD(ap_power_level);
 805
 806         if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
 807                 add_common_files(sdata);
 808
 809         switch (sdata->vif.type) {
 810         case NL80211_IFTYPE_MESH_POINT:
 811 #ifdef CONFIG_MAC80211_MESH
 812                 add_mesh_files(sdata);
 813                 add_mesh_stats(sdata);
 814                 add_mesh_config(sdata);
 815 #endif
 816                 break;
 817         case NL80211_IFTYPE_STATION:
 818                 add_sta_files(sdata);
 819                 break;
 820         case NL80211_IFTYPE_ADHOC:
 821                 add_ibss_files(sdata);
 822                 break;
 823         case NL80211_IFTYPE_AP:
 824                 add_ap_files(sdata);
 825                 break;
 826         case NL80211_IFTYPE_AP_VLAN:
 827                 add_vlan_files(sdata);
 828                 break;
 829         default:
 830                 break;
 831         }
 832 }
 833
 834 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
 835 {
 836         char buf[10+IFNAMSIZ];
 837
 838         sprintf(buf, "netdev:%s", sdata->name);
 839         sdata->vif.debugfs_dir = debugfs_create_dir(buf,
 840                 sdata->local->hw.wiphy->debugfsdir);
 841         sdata->debugfs.subdir_stations = debugfs_create_dir("stations",
 842                                                         sdata->vif.debugfs_dir);
 843         add_files(sdata);
 844 }
 845
 846 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
 847 {
 848         if (!sdata->vif.debugfs_dir)
 849                 return;
 850
 851         debugfs_remove_recursive(sdata->vif.debugfs_dir);
 852         sdata->vif.debugfs_dir = NULL;
 853         sdata->debugfs.subdir_stations = NULL;
 854 }
 855
 856 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
 857 {
 858         struct dentry *dir;
 859         char buf[10 + IFNAMSIZ];
 860
 861         dir = sdata->vif.debugfs_dir;
 862
 863         if (IS_ERR_OR_NULL(dir))
 864                 return;
 865
 866         sprintf(buf, "netdev:%s", sdata->name);
 867         debugfs_rename(dir->d_parent, dir, dir->d_parent, buf);
 868 }