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) 2020-2023 Intel Corporation 6 */ 7 8 #include <linux/kernel.h> 9 #include <linux/device.h> 10 #include <linux/hex.h> 11 #include <linux/if.h> 12 #include <linux/if_ether.h> 13 #include <linux/interrupt.h> 14 #include <linux/netdevice.h> 15 #include <linux/rtnetlink.h> 16 #include <linux/slab.h> 17 #include <linux/notifier.h> 18 #include <net/mac80211.h> 19 #include <net/cfg80211.h> 20 #include "ieee80211_i.h" 21 #include "rate.h" 22 #include "debugfs.h" 23 #include "debugfs_netdev.h" 24 #include "driver-ops.h" 25 26 struct ieee80211_if_read_sdata_data { 27 ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int); 28 struct ieee80211_sub_if_data *sdata; 29 }; 30 31 static ssize_t ieee80211_if_read_sdata_handler(struct wiphy *wiphy, 32 struct file *file, 33 char *buf, 34 size_t bufsize, 35 void *data) 36 { 37 struct ieee80211_if_read_sdata_data *d = data; 38 39 return d->format(d->sdata, buf, bufsize); 40 } 41 42 static ssize_t ieee80211_if_read_sdata( 43 struct file *file, 44 char __user *userbuf, 45 size_t count, loff_t *ppos, 46 ssize_t (*format)(const struct ieee80211_sub_if_data *sdata, char *, int)) 47 { 48 struct ieee80211_sub_if_data *sdata = file->private_data; 49 struct ieee80211_if_read_sdata_data data = { 50 .format = format, 51 .sdata = sdata, 52 }; 53 char buf[200]; 54 55 return wiphy_locked_debugfs_read(sdata->local->hw.wiphy, 56 file, buf, sizeof(buf), 57 userbuf, count, ppos, 58 ieee80211_if_read_sdata_handler, 59 &data); 60 } 61 62 struct ieee80211_if_write_sdata_data { 63 ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int); 64 struct ieee80211_sub_if_data *sdata; 65 }; 66 67 static ssize_t ieee80211_if_write_sdata_handler(struct wiphy *wiphy, 68 struct file *file, 69 char *buf, 70 size_t count, 71 void *data) 72 { 73 struct ieee80211_if_write_sdata_data *d = data; 74 75 return d->write(d->sdata, buf, count); 76 } 77 78 static ssize_t ieee80211_if_write_sdata( 79 struct file *file, 80 const char __user *userbuf, 81 size_t count, loff_t *ppos, 82 ssize_t (*write)(struct ieee80211_sub_if_data *sdata, const char *, int)) 83 { 84 struct ieee80211_sub_if_data *sdata = file->private_data; 85 struct ieee80211_if_write_sdata_data data = { 86 .write = write, 87 .sdata = sdata, 88 }; 89 char buf[64]; 90 91 return wiphy_locked_debugfs_write(sdata->local->hw.wiphy, 92 file, buf, sizeof(buf), 93 userbuf, count, 94 ieee80211_if_write_sdata_handler, 95 &data); 96 } 97 98 struct ieee80211_if_read_link_data { 99 ssize_t (*format)(const struct ieee80211_link_data *, char *, int); 100 struct ieee80211_link_data *link; 101 }; 102 103 static ssize_t ieee80211_if_read_link_handler(struct wiphy *wiphy, 104 struct file *file, 105 char *buf, 106 size_t bufsize, 107 void *data) 108 { 109 struct ieee80211_if_read_link_data *d = data; 110 111 return d->format(d->link, buf, bufsize); 112 } 113 114 static ssize_t ieee80211_if_read_link( 115 struct file *file, 116 char __user *userbuf, 117 size_t count, loff_t *ppos, 118 ssize_t (*format)(const struct ieee80211_link_data *link, char *, int)) 119 { 120 struct ieee80211_link_data *link = file->private_data; 121 struct ieee80211_if_read_link_data data = { 122 .format = format, 123 .link = link, 124 }; 125 char buf[200]; 126 127 return wiphy_locked_debugfs_read(link->sdata->local->hw.wiphy, 128 file, buf, sizeof(buf), 129 userbuf, count, ppos, 130 ieee80211_if_read_link_handler, 131 &data); 132 } 133 134 struct ieee80211_if_write_link_data { 135 ssize_t (*write)(struct ieee80211_link_data *, const char *, int); 136 struct ieee80211_link_data *link; 137 }; 138 139 static ssize_t ieee80211_if_write_link_handler(struct wiphy *wiphy, 140 struct file *file, 141 char *buf, 142 size_t count, 143 void *data) 144 { 145 struct ieee80211_if_write_sdata_data *d = data; 146 147 return d->write(d->sdata, buf, count); 148 } 149 150 static ssize_t ieee80211_if_write_link( 151 struct file *file, 152 const char __user *userbuf, 153 size_t count, loff_t *ppos, 154 ssize_t (*write)(struct ieee80211_link_data *link, const char *, int)) 155 { 156 struct ieee80211_link_data *link = file->private_data; 157 struct ieee80211_if_write_link_data data = { 158 .write = write, 159 .link = link, 160 }; 161 char buf[64]; 162 163 return wiphy_locked_debugfs_write(link->sdata->local->hw.wiphy, 164 file, buf, sizeof(buf), 165 userbuf, count, 166 ieee80211_if_write_link_handler, 167 &data); 168 } 169 170 #define IEEE80211_IF_FMT(name, type, field, format_string) \ 171 static ssize_t ieee80211_if_fmt_##name( \ 172 const type *data, char *buf, \ 173 int buflen) \ 174 { \ 175 return scnprintf(buf, buflen, format_string, data->field); \ 176 } 177 #define IEEE80211_IF_FMT_DEC(name, type, field) \ 178 IEEE80211_IF_FMT(name, type, field, "%d\n") 179 #define IEEE80211_IF_FMT_HEX(name, type, field) \ 180 IEEE80211_IF_FMT(name, type, field, "%#x\n") 181 #define IEEE80211_IF_FMT_LHEX(name, type, field) \ 182 IEEE80211_IF_FMT(name, type, field, "%#lx\n") 183 184 #define IEEE80211_IF_FMT_HEXARRAY(name, type, field) \ 185 static ssize_t ieee80211_if_fmt_##name( \ 186 const type *data, \ 187 char *buf, int buflen) \ 188 { \ 189 char *p = buf; \ 190 int i; \ 191 for (i = 0; i < sizeof(data->field); i++) { \ 192 p += scnprintf(p, buflen + buf - p, "%.2x ", \ 193 data->field[i]); \ 194 } \ 195 p += scnprintf(p, buflen + buf - p, "\n"); \ 196 return p - buf; \ 197 } 198 199 #define IEEE80211_IF_FMT_ATOMIC(name, type, field) \ 200 static ssize_t ieee80211_if_fmt_##name( \ 201 const type *data, \ 202 char *buf, int buflen) \ 203 { \ 204 return scnprintf(buf, buflen, "%d\n", atomic_read(&data->field));\ 205 } 206 207 #define IEEE80211_IF_FMT_MAC(name, type, field) \ 208 static ssize_t ieee80211_if_fmt_##name( \ 209 const type *data, char *buf, \ 210 int buflen) \ 211 { \ 212 return scnprintf(buf, buflen, "%pM\n", data->field); \ 213 } 214 215 #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, type, field) \ 216 static ssize_t ieee80211_if_fmt_##name( \ 217 const type *data, \ 218 char *buf, int buflen) \ 219 { \ 220 return scnprintf(buf, buflen, "%d\n", \ 221 jiffies_to_msecs(data->field)); \ 222 } 223 224 #define _IEEE80211_IF_FILE_OPS(name, _read, _write) \ 225 static const struct debugfs_short_fops name##_ops = { \ 226 .read = (_read), \ 227 .write = (_write), \ 228 .llseek = generic_file_llseek, \ 229 } 230 231 #define _IEEE80211_IF_FILE_R_FN(name) \ 232 static ssize_t ieee80211_if_read_##name(struct file *file, \ 233 char __user *userbuf, \ 234 size_t count, loff_t *ppos) \ 235 { \ 236 return ieee80211_if_read_sdata(file, \ 237 userbuf, count, ppos, \ 238 ieee80211_if_fmt_##name); \ 239 } 240 241 #define _IEEE80211_IF_FILE_W_FN(name) \ 242 static ssize_t ieee80211_if_write_##name(struct file *file, \ 243 const char __user *userbuf, \ 244 size_t count, loff_t *ppos) \ 245 { \ 246 return ieee80211_if_write_sdata(file, userbuf, \ 247 count, ppos, \ 248 ieee80211_if_parse_##name); \ 249 } 250 251 #define IEEE80211_IF_FILE_R(name) \ 252 _IEEE80211_IF_FILE_R_FN(name) \ 253 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL) 254 255 #define IEEE80211_IF_FILE_W(name) \ 256 _IEEE80211_IF_FILE_W_FN(name) \ 257 _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name) 258 259 #define IEEE80211_IF_FILE_RW(name) \ 260 _IEEE80211_IF_FILE_R_FN(name) \ 261 _IEEE80211_IF_FILE_W_FN(name) \ 262 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, \ 263 ieee80211_if_write_##name) 264 265 #define IEEE80211_IF_FILE(name, field, format) \ 266 IEEE80211_IF_FMT_##format(name, struct ieee80211_sub_if_data, field) \ 267 IEEE80211_IF_FILE_R(name) 268 269 #define _IEEE80211_IF_LINK_R_FN(name) \ 270 static ssize_t ieee80211_if_read_##name(struct file *file, \ 271 char __user *userbuf, \ 272 size_t count, loff_t *ppos) \ 273 { \ 274 return ieee80211_if_read_link(file, \ 275 userbuf, count, ppos, \ 276 ieee80211_if_fmt_##name); \ 277 } 278 279 #define _IEEE80211_IF_LINK_W_FN(name) \ 280 static ssize_t ieee80211_if_write_##name(struct file *file, \ 281 const char __user *userbuf, \ 282 size_t count, loff_t *ppos) \ 283 { \ 284 return ieee80211_if_write_link(file, userbuf, \ 285 count, ppos, \ 286 ieee80211_if_parse_##name); \ 287 } 288 289 #define IEEE80211_IF_LINK_FILE_R(name) \ 290 _IEEE80211_IF_LINK_R_FN(name) \ 291 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, NULL) 292 293 #define IEEE80211_IF_LINK_FILE_W(name) \ 294 _IEEE80211_IF_LINK_W_FN(name) \ 295 _IEEE80211_IF_FILE_OPS(link_##name, NULL, ieee80211_if_write_##name) 296 297 #define IEEE80211_IF_LINK_FILE_RW(name) \ 298 _IEEE80211_IF_LINK_R_FN(name) \ 299 _IEEE80211_IF_LINK_W_FN(name) \ 300 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, \ 301 ieee80211_if_write_##name) 302 303 #define IEEE80211_IF_LINK_FILE(name, field, format) \ 304 IEEE80211_IF_FMT_##format(name, struct ieee80211_link_data, field) \ 305 IEEE80211_IF_LINK_FILE_R(name) 306 307 /* common attributes */ 308 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[NL80211_BAND_2GHZ], 309 HEX); 310 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[NL80211_BAND_5GHZ], 311 HEX); 312 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz, 313 rc_rateidx_mcs_mask[NL80211_BAND_2GHZ], HEXARRAY); 314 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz, 315 rc_rateidx_mcs_mask[NL80211_BAND_5GHZ], HEXARRAY); 316 317 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz( 318 const struct ieee80211_sub_if_data *sdata, 319 char *buf, int buflen) 320 { 321 int i, len = 0; 322 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_2GHZ]; 323 324 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 325 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); 326 len += scnprintf(buf + len, buflen - len, "\n"); 327 328 return len; 329 } 330 331 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz); 332 333 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz( 334 const struct ieee80211_sub_if_data *sdata, 335 char *buf, int buflen) 336 { 337 int i, len = 0; 338 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_5GHZ]; 339 340 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 341 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); 342 len += scnprintf(buf + len, buflen - len, "\n"); 343 344 return len; 345 } 346 347 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz); 348 349 IEEE80211_IF_FILE(flags, flags, HEX); 350 IEEE80211_IF_FILE(state, state, LHEX); 351 IEEE80211_IF_LINK_FILE(txpower, conf->txpower, DEC); 352 IEEE80211_IF_LINK_FILE(ap_power_level, ap_power_level, DEC); 353 IEEE80211_IF_LINK_FILE(user_power_level, user_power_level, DEC); 354 355 static ssize_t 356 ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata, 357 char *buf, int buflen) 358 { 359 int len; 360 361 len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d\n", 362 sdata->vif.hw_queue[IEEE80211_AC_VO], 363 sdata->vif.hw_queue[IEEE80211_AC_VI], 364 sdata->vif.hw_queue[IEEE80211_AC_BE], 365 sdata->vif.hw_queue[IEEE80211_AC_BK]); 366 367 if (sdata->vif.type == NL80211_IFTYPE_AP) 368 len += scnprintf(buf + len, buflen - len, "cab queue: %d\n", 369 sdata->vif.cab_queue); 370 371 return len; 372 } 373 IEEE80211_IF_FILE_R(hw_queues); 374 375 /* STA attributes */ 376 IEEE80211_IF_FILE(bssid, deflink.u.mgd.bssid, MAC); 377 IEEE80211_IF_FILE(aid, vif.cfg.aid, DEC); 378 IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS); 379 380 static int ieee80211_set_smps(struct ieee80211_link_data *link, 381 enum ieee80211_smps_mode smps_mode) 382 { 383 struct ieee80211_sub_if_data *sdata = link->sdata; 384 struct ieee80211_local *local = sdata->local; 385 386 /* The driver indicated that EML is enabled for the interface, thus do 387 * not allow to override the SMPS state. 388 */ 389 if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE) 390 return -EOPNOTSUPP; 391 392 if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) && 393 smps_mode == IEEE80211_SMPS_STATIC) 394 return -EINVAL; 395 396 /* auto should be dynamic if in PS mode */ 397 if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) && 398 (smps_mode == IEEE80211_SMPS_DYNAMIC || 399 smps_mode == IEEE80211_SMPS_AUTOMATIC)) 400 return -EINVAL; 401 402 if (sdata->vif.type != NL80211_IFTYPE_STATION) 403 return -EOPNOTSUPP; 404 405 return __ieee80211_request_smps_mgd(link->sdata, link, smps_mode); 406 } 407 408 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { 409 [IEEE80211_SMPS_AUTOMATIC] = "auto", 410 [IEEE80211_SMPS_OFF] = "off", 411 [IEEE80211_SMPS_STATIC] = "static", 412 [IEEE80211_SMPS_DYNAMIC] = "dynamic", 413 }; 414 415 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_link_data *link, 416 char *buf, int buflen) 417 { 418 if (link->sdata->vif.type == NL80211_IFTYPE_STATION) 419 return snprintf(buf, buflen, "request: %s\nused: %s\n", 420 smps_modes[link->u.mgd.req_smps], 421 smps_modes[link->smps_mode]); 422 return -EINVAL; 423 } 424 425 static ssize_t ieee80211_if_parse_smps(struct ieee80211_link_data *link, 426 const char *buf, int buflen) 427 { 428 enum ieee80211_smps_mode mode; 429 430 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) { 431 if (strncmp(buf, smps_modes[mode], buflen) == 0) { 432 int err = ieee80211_set_smps(link, mode); 433 if (!err) 434 return buflen; 435 return err; 436 } 437 } 438 439 return -EINVAL; 440 } 441 IEEE80211_IF_LINK_FILE_RW(smps); 442 443 static ssize_t ieee80211_if_parse_tkip_mic_test( 444 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 445 { 446 struct ieee80211_local *local = sdata->local; 447 u8 addr[ETH_ALEN]; 448 struct sk_buff *skb; 449 struct ieee80211_hdr *hdr; 450 __le16 fc; 451 452 if (!mac_pton(buf, addr)) 453 return -EINVAL; 454 455 if (!ieee80211_sdata_running(sdata)) 456 return -ENOTCONN; 457 458 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100); 459 if (!skb) 460 return -ENOMEM; 461 skb_reserve(skb, local->hw.extra_tx_headroom); 462 463 hdr = skb_put_zero(skb, 24); 464 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); 465 466 switch (sdata->vif.type) { 467 case NL80211_IFTYPE_AP: 468 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); 469 /* DA BSSID SA */ 470 memcpy(hdr->addr1, addr, ETH_ALEN); 471 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 472 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN); 473 break; 474 case NL80211_IFTYPE_STATION: 475 fc |= cpu_to_le16(IEEE80211_FCTL_TODS); 476 /* BSSID SA DA */ 477 if (!sdata->u.mgd.associated) { 478 dev_kfree_skb(skb); 479 return -ENOTCONN; 480 } 481 memcpy(hdr->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN); 482 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 483 memcpy(hdr->addr3, addr, ETH_ALEN); 484 break; 485 default: 486 dev_kfree_skb(skb); 487 return -EOPNOTSUPP; 488 } 489 hdr->frame_control = fc; 490 491 /* 492 * Add some length to the test frame to make it look bit more valid. 493 * The exact contents does not matter since the recipient is required 494 * to drop this because of the Michael MIC failure. 495 */ 496 skb_put_zero(skb, 50); 497 498 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE; 499 500 ieee80211_tx_skb(sdata, skb); 501 502 return buflen; 503 } 504 IEEE80211_IF_FILE_W(tkip_mic_test); 505 506 static ssize_t ieee80211_if_parse_beacon_loss( 507 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 508 { 509 if (!ieee80211_sdata_running(sdata) || !sdata->vif.cfg.assoc) 510 return -ENOTCONN; 511 512 ieee80211_beacon_loss(&sdata->vif); 513 514 return buflen; 515 } 516 IEEE80211_IF_FILE_W(beacon_loss); 517 518 static ssize_t ieee80211_if_fmt_uapsd_queues( 519 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 520 { 521 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 522 523 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues); 524 } 525 526 static ssize_t ieee80211_if_parse_uapsd_queues( 527 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 528 { 529 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 530 u8 val; 531 int ret; 532 533 ret = kstrtou8(buf, 0, &val); 534 if (ret) 535 return ret; 536 537 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 538 return -ERANGE; 539 540 ifmgd->uapsd_queues = val; 541 542 return buflen; 543 } 544 IEEE80211_IF_FILE_RW(uapsd_queues); 545 546 static ssize_t ieee80211_if_fmt_uapsd_max_sp_len( 547 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 548 { 549 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 550 551 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len); 552 } 553 554 static ssize_t ieee80211_if_parse_uapsd_max_sp_len( 555 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 556 { 557 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 558 unsigned long val; 559 int ret; 560 561 ret = kstrtoul(buf, 0, &val); 562 if (ret) 563 return -EINVAL; 564 565 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 566 return -ERANGE; 567 568 ifmgd->uapsd_max_sp_len = val; 569 570 return buflen; 571 } 572 IEEE80211_IF_FILE_RW(uapsd_max_sp_len); 573 574 static ssize_t ieee80211_if_fmt_tdls_wider_bw( 575 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 576 { 577 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 578 bool tdls_wider_bw; 579 580 tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) && 581 !ifmgd->tdls_wider_bw_prohibited; 582 583 return snprintf(buf, buflen, "%d\n", tdls_wider_bw); 584 } 585 586 static ssize_t ieee80211_if_parse_tdls_wider_bw( 587 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 588 { 589 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 590 u8 val; 591 int ret; 592 593 ret = kstrtou8(buf, 0, &val); 594 if (ret) 595 return ret; 596 597 ifmgd->tdls_wider_bw_prohibited = !val; 598 return buflen; 599 } 600 IEEE80211_IF_FILE_RW(tdls_wider_bw); 601 602 /* AP attributes */ 603 IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC); 604 IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC); 605 IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC); 606 IEEE80211_IF_FILE(num_mcast_sta_vlan, u.vlan.num_mcast_sta, ATOMIC); 607 608 static ssize_t ieee80211_if_fmt_num_buffered_multicast( 609 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 610 { 611 return scnprintf(buf, buflen, "%u\n", 612 skb_queue_len(&sdata->u.ap.ps.bc_buf)); 613 } 614 IEEE80211_IF_FILE_R(num_buffered_multicast); 615 616 static ssize_t ieee80211_if_fmt_aqm( 617 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 618 { 619 struct ieee80211_local *local = sdata->local; 620 struct txq_info *txqi; 621 int len; 622 623 if (!sdata->vif.txq) 624 return 0; 625 626 txqi = to_txq_info(sdata->vif.txq); 627 628 spin_lock_bh(&local->fq.lock); 629 630 len = scnprintf(buf, 631 buflen, 632 "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n" 633 "%u %u %u %u %u %u %u %u %u %u\n", 634 txqi->txq.ac, 635 txqi->tin.backlog_bytes, 636 txqi->tin.backlog_packets, 637 txqi->tin.flows, 638 txqi->cstats.drop_count, 639 txqi->cstats.ecn_mark, 640 txqi->tin.overlimit, 641 txqi->tin.collisions, 642 txqi->tin.tx_bytes, 643 txqi->tin.tx_packets); 644 645 spin_unlock_bh(&local->fq.lock); 646 647 return len; 648 } 649 IEEE80211_IF_FILE_R(aqm); 650 651 IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX); 652 653 /* IBSS attributes */ 654 static ssize_t ieee80211_if_fmt_tsf( 655 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 656 { 657 struct ieee80211_local *local = sdata->local; 658 u64 tsf; 659 660 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata); 661 662 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf); 663 } 664 665 static ssize_t ieee80211_if_parse_tsf( 666 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 667 { 668 struct ieee80211_local *local = sdata->local; 669 unsigned long long tsf; 670 int ret; 671 int tsf_is_delta = 0; 672 673 if (strncmp(buf, "reset", 5) == 0) { 674 if (local->ops->reset_tsf) { 675 drv_reset_tsf(local, sdata); 676 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n"); 677 } 678 } else { 679 if (buflen > 10 && buf[1] == '=') { 680 if (buf[0] == '+') 681 tsf_is_delta = 1; 682 else if (buf[0] == '-') 683 tsf_is_delta = -1; 684 else 685 return -EINVAL; 686 buf += 2; 687 } 688 ret = kstrtoull(buf, 10, &tsf); 689 if (ret < 0) 690 return ret; 691 if (tsf_is_delta && local->ops->offset_tsf) { 692 drv_offset_tsf(local, sdata, tsf_is_delta * tsf); 693 wiphy_info(local->hw.wiphy, 694 "debugfs offset TSF by %018lld\n", 695 tsf_is_delta * tsf); 696 } else if (local->ops->set_tsf) { 697 if (tsf_is_delta) 698 tsf = drv_get_tsf(local, sdata) + 699 tsf_is_delta * tsf; 700 drv_set_tsf(local, sdata, tsf); 701 wiphy_info(local->hw.wiphy, 702 "debugfs set TSF to %#018llx\n", tsf); 703 } 704 } 705 706 ieee80211_recalc_dtim(sdata, drv_get_tsf(local, sdata)); 707 return buflen; 708 } 709 IEEE80211_IF_FILE_RW(tsf); 710 711 static ssize_t ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data *sdata, 712 char *buf, int buflen) 713 { 714 return snprintf(buf, buflen, "0x%x\n", sdata->vif.valid_links); 715 } 716 IEEE80211_IF_FILE_R(valid_links); 717 718 static ssize_t ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data *sdata, 719 char *buf, int buflen) 720 { 721 return snprintf(buf, buflen, "0x%x\n", sdata->vif.active_links); 722 } 723 724 static ssize_t ieee80211_if_parse_active_links(struct ieee80211_sub_if_data *sdata, 725 const char *buf, int buflen) 726 { 727 u16 active_links; 728 729 if (kstrtou16(buf, 0, &active_links) || !active_links) 730 return -EINVAL; 731 732 return ieee80211_set_active_links(&sdata->vif, active_links) ?: buflen; 733 } 734 IEEE80211_IF_FILE_RW(active_links); 735 736 IEEE80211_IF_LINK_FILE(addr, conf->addr, MAC); 737 738 #ifdef CONFIG_MAC80211_MESH 739 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC); 740 741 /* Mesh stats attributes */ 742 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); 743 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); 744 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); 745 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); 746 IEEE80211_IF_FILE(dropped_frames_no_route, 747 u.mesh.mshstats.dropped_frames_no_route, DEC); 748 749 /* Mesh parameters */ 750 IEEE80211_IF_FILE(dot11MeshMaxRetries, 751 u.mesh.mshcfg.dot11MeshMaxRetries, DEC); 752 IEEE80211_IF_FILE(dot11MeshRetryTimeout, 753 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); 754 IEEE80211_IF_FILE(dot11MeshConfirmTimeout, 755 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); 756 IEEE80211_IF_FILE(dot11MeshHoldingTimeout, 757 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); 758 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); 759 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC); 760 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); 761 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, 762 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); 763 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, 764 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); 765 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, 766 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); 767 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval, 768 u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC); 769 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, 770 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); 771 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, 772 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); 773 IEEE80211_IF_FILE(path_refresh_time, 774 u.mesh.mshcfg.path_refresh_time, DEC); 775 IEEE80211_IF_FILE(min_discovery_timeout, 776 u.mesh.mshcfg.min_discovery_timeout, DEC); 777 IEEE80211_IF_FILE(dot11MeshHWMPRootMode, 778 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); 779 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, 780 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); 781 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, 782 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); 783 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); 784 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC); 785 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC); 786 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout, 787 u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC); 788 IEEE80211_IF_FILE(dot11MeshHWMProotInterval, 789 u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC); 790 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval, 791 u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC); 792 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC); 793 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration, 794 u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC); 795 IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate, 796 u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC); 797 IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC); 798 IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer, 799 u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC); 800 #endif 801 802 #define DEBUGFS_ADD_MODE(name, mode) \ 803 debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \ 804 sdata, &name##_ops) 805 806 #define DEBUGFS_ADD_X(_bits, _name, _mode) \ 807 debugfs_create_x##_bits(#_name, _mode, sdata->vif.debugfs_dir, \ 808 &sdata->vif._name) 809 810 #define DEBUGFS_ADD_X8(_name, _mode) \ 811 DEBUGFS_ADD_X(8, _name, _mode) 812 813 #define DEBUGFS_ADD_X16(_name, _mode) \ 814 DEBUGFS_ADD_X(16, _name, _mode) 815 816 #define DEBUGFS_ADD_X32(_name, _mode) \ 817 DEBUGFS_ADD_X(32, _name, _mode) 818 819 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400) 820 821 static void add_common_files(struct ieee80211_sub_if_data *sdata) 822 { 823 DEBUGFS_ADD(rc_rateidx_mask_2ghz); 824 DEBUGFS_ADD(rc_rateidx_mask_5ghz); 825 DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); 826 DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); 827 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz); 828 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz); 829 DEBUGFS_ADD(hw_queues); 830 831 if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 832 sdata->vif.type != NL80211_IFTYPE_NAN) 833 DEBUGFS_ADD(aqm); 834 } 835 836 static void add_sta_files(struct ieee80211_sub_if_data *sdata) 837 { 838 DEBUGFS_ADD(bssid); 839 DEBUGFS_ADD(aid); 840 DEBUGFS_ADD(beacon_timeout); 841 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 842 DEBUGFS_ADD_MODE(beacon_loss, 0200); 843 DEBUGFS_ADD_MODE(uapsd_queues, 0600); 844 DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600); 845 DEBUGFS_ADD_MODE(tdls_wider_bw, 0600); 846 DEBUGFS_ADD_MODE(valid_links, 0400); 847 DEBUGFS_ADD_MODE(active_links, 0600); 848 DEBUGFS_ADD_X16(dormant_links, 0400); 849 } 850 851 static void add_ap_files(struct ieee80211_sub_if_data *sdata) 852 { 853 DEBUGFS_ADD(num_mcast_sta); 854 DEBUGFS_ADD(num_sta_ps); 855 DEBUGFS_ADD(dtim_count); 856 DEBUGFS_ADD(num_buffered_multicast); 857 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 858 DEBUGFS_ADD_MODE(multicast_to_unicast, 0600); 859 } 860 861 static void add_vlan_files(struct ieee80211_sub_if_data *sdata) 862 { 863 /* add num_mcast_sta_vlan using name num_mcast_sta */ 864 debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir, 865 sdata, &num_mcast_sta_vlan_ops); 866 } 867 868 static void add_ibss_files(struct ieee80211_sub_if_data *sdata) 869 { 870 DEBUGFS_ADD_MODE(tsf, 0600); 871 } 872 873 #ifdef CONFIG_MAC80211_MESH 874 875 static void add_mesh_files(struct ieee80211_sub_if_data *sdata) 876 { 877 DEBUGFS_ADD_MODE(tsf, 0600); 878 DEBUGFS_ADD_MODE(estab_plinks, 0400); 879 } 880 881 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) 882 { 883 struct dentry *dir = debugfs_create_dir("mesh_stats", 884 sdata->vif.debugfs_dir); 885 #define MESHSTATS_ADD(name)\ 886 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops) 887 888 MESHSTATS_ADD(fwded_mcast); 889 MESHSTATS_ADD(fwded_unicast); 890 MESHSTATS_ADD(fwded_frames); 891 MESHSTATS_ADD(dropped_frames_ttl); 892 MESHSTATS_ADD(dropped_frames_no_route); 893 #undef MESHSTATS_ADD 894 } 895 896 static void add_mesh_config(struct ieee80211_sub_if_data *sdata) 897 { 898 struct dentry *dir = debugfs_create_dir("mesh_config", 899 sdata->vif.debugfs_dir); 900 901 #define MESHPARAMS_ADD(name) \ 902 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops) 903 904 MESHPARAMS_ADD(dot11MeshMaxRetries); 905 MESHPARAMS_ADD(dot11MeshRetryTimeout); 906 MESHPARAMS_ADD(dot11MeshConfirmTimeout); 907 MESHPARAMS_ADD(dot11MeshHoldingTimeout); 908 MESHPARAMS_ADD(dot11MeshTTL); 909 MESHPARAMS_ADD(element_ttl); 910 MESHPARAMS_ADD(auto_open_plinks); 911 MESHPARAMS_ADD(dot11MeshMaxPeerLinks); 912 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); 913 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); 914 MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval); 915 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); 916 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); 917 MESHPARAMS_ADD(path_refresh_time); 918 MESHPARAMS_ADD(min_discovery_timeout); 919 MESHPARAMS_ADD(dot11MeshHWMPRootMode); 920 MESHPARAMS_ADD(dot11MeshHWMPRannInterval); 921 MESHPARAMS_ADD(dot11MeshForwarding); 922 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol); 923 MESHPARAMS_ADD(rssi_threshold); 924 MESHPARAMS_ADD(ht_opmode); 925 MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout); 926 MESHPARAMS_ADD(dot11MeshHWMProotInterval); 927 MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval); 928 MESHPARAMS_ADD(power_mode); 929 MESHPARAMS_ADD(dot11MeshAwakeWindowDuration); 930 MESHPARAMS_ADD(dot11MeshConnectedToMeshGate); 931 MESHPARAMS_ADD(dot11MeshNolearn); 932 MESHPARAMS_ADD(dot11MeshConnectedToAuthServer); 933 #undef MESHPARAMS_ADD 934 } 935 #endif 936 937 static void add_files(struct ieee80211_sub_if_data *sdata) 938 { 939 if (!sdata->vif.debugfs_dir) 940 return; 941 942 DEBUGFS_ADD(flags); 943 DEBUGFS_ADD(state); 944 945 if (sdata->vif.type != NL80211_IFTYPE_MONITOR) 946 add_common_files(sdata); 947 948 switch (sdata->vif.type) { 949 case NL80211_IFTYPE_MESH_POINT: 950 #ifdef CONFIG_MAC80211_MESH 951 add_mesh_files(sdata); 952 add_mesh_stats(sdata); 953 add_mesh_config(sdata); 954 #endif 955 break; 956 case NL80211_IFTYPE_STATION: 957 add_sta_files(sdata); 958 break; 959 case NL80211_IFTYPE_ADHOC: 960 add_ibss_files(sdata); 961 break; 962 case NL80211_IFTYPE_AP: 963 add_ap_files(sdata); 964 break; 965 case NL80211_IFTYPE_AP_VLAN: 966 add_vlan_files(sdata); 967 break; 968 default: 969 break; 970 } 971 } 972 973 #undef DEBUGFS_ADD_MODE 974 #undef DEBUGFS_ADD 975 976 #define DEBUGFS_ADD_MODE(dentry, name, mode) \ 977 debugfs_create_file(#name, mode, dentry, \ 978 link, &link_##name##_ops) 979 980 #define DEBUGFS_ADD(dentry, name) DEBUGFS_ADD_MODE(dentry, name, 0400) 981 982 static void add_link_files(struct ieee80211_link_data *link, 983 struct dentry *dentry) 984 { 985 DEBUGFS_ADD(dentry, txpower); 986 DEBUGFS_ADD(dentry, user_power_level); 987 DEBUGFS_ADD(dentry, ap_power_level); 988 989 switch (link->sdata->vif.type) { 990 case NL80211_IFTYPE_STATION: 991 DEBUGFS_ADD_MODE(dentry, smps, 0600); 992 break; 993 default: 994 break; 995 } 996 } 997 998 static void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata, 999 bool mld_vif) 1000 { 1001 char buf[10+IFNAMSIZ]; 1002 1003 sprintf(buf, "netdev:%s", sdata->name); 1004 sdata->vif.debugfs_dir = debugfs_create_dir(buf, 1005 sdata->local->hw.wiphy->debugfsdir); 1006 /* deflink also has this */ 1007 sdata->deflink.debugfs_dir = sdata->vif.debugfs_dir; 1008 sdata->debugfs.subdir_stations = debugfs_create_dir("stations", 1009 sdata->vif.debugfs_dir); 1010 add_files(sdata); 1011 if (!mld_vif) 1012 add_link_files(&sdata->deflink, sdata->vif.debugfs_dir); 1013 } 1014 1015 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) 1016 { 1017 if (!sdata->vif.debugfs_dir) 1018 return; 1019 1020 debugfs_remove_recursive(sdata->vif.debugfs_dir); 1021 sdata->vif.debugfs_dir = NULL; 1022 sdata->debugfs.subdir_stations = NULL; 1023 } 1024 1025 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) 1026 { 1027 debugfs_change_name(sdata->vif.debugfs_dir, "netdev:%s", sdata->name); 1028 } 1029 1030 void ieee80211_debugfs_recreate_netdev(struct ieee80211_sub_if_data *sdata, 1031 bool mld_vif) 1032 { 1033 ieee80211_debugfs_remove_netdev(sdata); 1034 ieee80211_debugfs_add_netdev(sdata, mld_vif); 1035 1036 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) { 1037 drv_vif_add_debugfs(sdata->local, sdata); 1038 if (!mld_vif) 1039 ieee80211_link_debugfs_drv_add(&sdata->deflink); 1040 } 1041 } 1042 1043 void ieee80211_link_debugfs_add(struct ieee80211_link_data *link) 1044 { 1045 char link_dir_name[10]; 1046 1047 if (WARN_ON(!link->sdata->vif.debugfs_dir || link->debugfs_dir)) 1048 return; 1049 1050 /* For now, this should not be called for non-MLO capable drivers */ 1051 if (WARN_ON(!(link->sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))) 1052 return; 1053 1054 snprintf(link_dir_name, sizeof(link_dir_name), 1055 "link-%d", link->link_id); 1056 1057 link->debugfs_dir = 1058 debugfs_create_dir(link_dir_name, 1059 link->sdata->vif.debugfs_dir); 1060 1061 DEBUGFS_ADD(link->debugfs_dir, addr); 1062 add_link_files(link, link->debugfs_dir); 1063 } 1064 1065 void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link) 1066 { 1067 if (!link->sdata->vif.debugfs_dir || !link->debugfs_dir) { 1068 link->debugfs_dir = NULL; 1069 return; 1070 } 1071 1072 if (link->debugfs_dir == link->sdata->vif.debugfs_dir) { 1073 WARN_ON(link != &link->sdata->deflink); 1074 link->debugfs_dir = NULL; 1075 return; 1076 } 1077 1078 debugfs_remove_recursive(link->debugfs_dir); 1079 link->debugfs_dir = NULL; 1080 } 1081 1082 void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link) 1083 { 1084 if (link->sdata->vif.type == NL80211_IFTYPE_MONITOR || 1085 WARN_ON(!link->debugfs_dir)) 1086 return; 1087 1088 drv_link_add_debugfs(link->sdata->local, link->sdata, 1089 link->conf, link->debugfs_dir); 1090 } 1091 1092 void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link) 1093 { 1094 if (!link || !link->debugfs_dir) 1095 return; 1096 1097 if (WARN_ON(link->debugfs_dir == link->sdata->vif.debugfs_dir)) 1098 return; 1099 1100 /* Recreate the directory excluding the driver data */ 1101 debugfs_remove_recursive(link->debugfs_dir); 1102 link->debugfs_dir = NULL; 1103 1104 ieee80211_link_debugfs_add(link); 1105 } 1106