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/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 struct ieee80211_if_read_sdata_data { 26 ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int); 27 struct ieee80211_sub_if_data *sdata; 28 }; 29 30 static ssize_t ieee80211_if_read_sdata_handler(struct wiphy *wiphy, 31 struct file *file, 32 char *buf, 33 size_t bufsize, 34 void *data) 35 { 36 struct ieee80211_if_read_sdata_data *d = data; 37 38 return d->format(d->sdata, buf, bufsize); 39 } 40 41 static ssize_t ieee80211_if_read_sdata( 42 struct file *file, 43 char __user *userbuf, 44 size_t count, loff_t *ppos, 45 ssize_t (*format)(const struct ieee80211_sub_if_data *sdata, char *, int)) 46 { 47 struct ieee80211_sub_if_data *sdata = file->private_data; 48 struct ieee80211_if_read_sdata_data data = { 49 .format = format, 50 .sdata = sdata, 51 }; 52 char buf[200]; 53 54 return wiphy_locked_debugfs_read(sdata->local->hw.wiphy, 55 file, buf, sizeof(buf), 56 userbuf, count, ppos, 57 ieee80211_if_read_sdata_handler, 58 &data); 59 } 60 61 struct ieee80211_if_write_sdata_data { 62 ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int); 63 struct ieee80211_sub_if_data *sdata; 64 }; 65 66 static ssize_t ieee80211_if_write_sdata_handler(struct wiphy *wiphy, 67 struct file *file, 68 char *buf, 69 size_t count, 70 void *data) 71 { 72 struct ieee80211_if_write_sdata_data *d = data; 73 74 return d->write(d->sdata, buf, count); 75 } 76 77 static ssize_t ieee80211_if_write_sdata( 78 struct file *file, 79 const char __user *userbuf, 80 size_t count, loff_t *ppos, 81 ssize_t (*write)(struct ieee80211_sub_if_data *sdata, const char *, int)) 82 { 83 struct ieee80211_sub_if_data *sdata = file->private_data; 84 struct ieee80211_if_write_sdata_data data = { 85 .write = write, 86 .sdata = sdata, 87 }; 88 char buf[64]; 89 90 return wiphy_locked_debugfs_write(sdata->local->hw.wiphy, 91 file, buf, sizeof(buf), 92 userbuf, count, 93 ieee80211_if_write_sdata_handler, 94 &data); 95 } 96 97 struct ieee80211_if_read_link_data { 98 ssize_t (*format)(const struct ieee80211_link_data *, char *, int); 99 struct ieee80211_link_data *link; 100 }; 101 102 static ssize_t ieee80211_if_read_link_handler(struct wiphy *wiphy, 103 struct file *file, 104 char *buf, 105 size_t bufsize, 106 void *data) 107 { 108 struct ieee80211_if_read_link_data *d = data; 109 110 return d->format(d->link, buf, bufsize); 111 } 112 113 static ssize_t ieee80211_if_read_link( 114 struct file *file, 115 char __user *userbuf, 116 size_t count, loff_t *ppos, 117 ssize_t (*format)(const struct ieee80211_link_data *link, char *, int)) 118 { 119 struct ieee80211_link_data *link = file->private_data; 120 struct ieee80211_if_read_link_data data = { 121 .format = format, 122 .link = link, 123 }; 124 char buf[200]; 125 126 return wiphy_locked_debugfs_read(link->sdata->local->hw.wiphy, 127 file, buf, sizeof(buf), 128 userbuf, count, ppos, 129 ieee80211_if_read_link_handler, 130 &data); 131 } 132 133 struct ieee80211_if_write_link_data { 134 ssize_t (*write)(struct ieee80211_link_data *, const char *, int); 135 struct ieee80211_link_data *link; 136 }; 137 138 static ssize_t ieee80211_if_write_link_handler(struct wiphy *wiphy, 139 struct file *file, 140 char *buf, 141 size_t count, 142 void *data) 143 { 144 struct ieee80211_if_write_sdata_data *d = data; 145 146 return d->write(d->sdata, buf, count); 147 } 148 149 static ssize_t ieee80211_if_write_link( 150 struct file *file, 151 const char __user *userbuf, 152 size_t count, loff_t *ppos, 153 ssize_t (*write)(struct ieee80211_link_data *link, const char *, int)) 154 { 155 struct ieee80211_link_data *link = file->private_data; 156 struct ieee80211_if_write_link_data data = { 157 .write = write, 158 .link = link, 159 }; 160 char buf[64]; 161 162 return wiphy_locked_debugfs_write(link->sdata->local->hw.wiphy, 163 file, buf, sizeof(buf), 164 userbuf, count, 165 ieee80211_if_write_link_handler, 166 &data); 167 } 168 169 #define IEEE80211_IF_FMT(name, type, field, format_string) \ 170 static ssize_t ieee80211_if_fmt_##name( \ 171 const type *data, char *buf, \ 172 int buflen) \ 173 { \ 174 return scnprintf(buf, buflen, format_string, data->field); \ 175 } 176 #define IEEE80211_IF_FMT_DEC(name, type, field) \ 177 IEEE80211_IF_FMT(name, type, field, "%d\n") 178 #define IEEE80211_IF_FMT_HEX(name, type, field) \ 179 IEEE80211_IF_FMT(name, type, field, "%#x\n") 180 #define IEEE80211_IF_FMT_LHEX(name, type, field) \ 181 IEEE80211_IF_FMT(name, type, field, "%#lx\n") 182 183 #define IEEE80211_IF_FMT_HEXARRAY(name, type, field) \ 184 static ssize_t ieee80211_if_fmt_##name( \ 185 const type *data, \ 186 char *buf, int buflen) \ 187 { \ 188 char *p = buf; \ 189 int i; \ 190 for (i = 0; i < sizeof(data->field); i++) { \ 191 p += scnprintf(p, buflen + buf - p, "%.2x ", \ 192 data->field[i]); \ 193 } \ 194 p += scnprintf(p, buflen + buf - p, "\n"); \ 195 return p - buf; \ 196 } 197 198 #define IEEE80211_IF_FMT_ATOMIC(name, type, field) \ 199 static ssize_t ieee80211_if_fmt_##name( \ 200 const type *data, \ 201 char *buf, int buflen) \ 202 { \ 203 return scnprintf(buf, buflen, "%d\n", atomic_read(&data->field));\ 204 } 205 206 #define IEEE80211_IF_FMT_MAC(name, type, field) \ 207 static ssize_t ieee80211_if_fmt_##name( \ 208 const type *data, char *buf, \ 209 int buflen) \ 210 { \ 211 return scnprintf(buf, buflen, "%pM\n", data->field); \ 212 } 213 214 #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, type, field) \ 215 static ssize_t ieee80211_if_fmt_##name( \ 216 const type *data, \ 217 char *buf, int buflen) \ 218 { \ 219 return scnprintf(buf, buflen, "%d\n", \ 220 jiffies_to_msecs(data->field)); \ 221 } 222 223 #define _IEEE80211_IF_FILE_OPS(name, _read, _write) \ 224 static const struct debugfs_short_fops name##_ops = { \ 225 .read = (_read), \ 226 .write = (_write), \ 227 .llseek = generic_file_llseek, \ 228 } 229 230 #define _IEEE80211_IF_FILE_R_FN(name) \ 231 static ssize_t ieee80211_if_read_##name(struct file *file, \ 232 char __user *userbuf, \ 233 size_t count, loff_t *ppos) \ 234 { \ 235 return ieee80211_if_read_sdata(file, \ 236 userbuf, count, ppos, \ 237 ieee80211_if_fmt_##name); \ 238 } 239 240 #define _IEEE80211_IF_FILE_W_FN(name) \ 241 static ssize_t ieee80211_if_write_##name(struct file *file, \ 242 const char __user *userbuf, \ 243 size_t count, loff_t *ppos) \ 244 { \ 245 return ieee80211_if_write_sdata(file, userbuf, \ 246 count, ppos, \ 247 ieee80211_if_parse_##name); \ 248 } 249 250 #define IEEE80211_IF_FILE_R(name) \ 251 _IEEE80211_IF_FILE_R_FN(name) \ 252 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL) 253 254 #define IEEE80211_IF_FILE_W(name) \ 255 _IEEE80211_IF_FILE_W_FN(name) \ 256 _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name) 257 258 #define IEEE80211_IF_FILE_RW(name) \ 259 _IEEE80211_IF_FILE_R_FN(name) \ 260 _IEEE80211_IF_FILE_W_FN(name) \ 261 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, \ 262 ieee80211_if_write_##name) 263 264 #define IEEE80211_IF_FILE(name, field, format) \ 265 IEEE80211_IF_FMT_##format(name, struct ieee80211_sub_if_data, field) \ 266 IEEE80211_IF_FILE_R(name) 267 268 #define _IEEE80211_IF_LINK_R_FN(name) \ 269 static ssize_t ieee80211_if_read_##name(struct file *file, \ 270 char __user *userbuf, \ 271 size_t count, loff_t *ppos) \ 272 { \ 273 return ieee80211_if_read_link(file, \ 274 userbuf, count, ppos, \ 275 ieee80211_if_fmt_##name); \ 276 } 277 278 #define _IEEE80211_IF_LINK_W_FN(name) \ 279 static ssize_t ieee80211_if_write_##name(struct file *file, \ 280 const char __user *userbuf, \ 281 size_t count, loff_t *ppos) \ 282 { \ 283 return ieee80211_if_write_link(file, userbuf, \ 284 count, ppos, \ 285 ieee80211_if_parse_##name); \ 286 } 287 288 #define IEEE80211_IF_LINK_FILE_R(name) \ 289 _IEEE80211_IF_LINK_R_FN(name) \ 290 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, NULL) 291 292 #define IEEE80211_IF_LINK_FILE_W(name) \ 293 _IEEE80211_IF_LINK_W_FN(name) \ 294 _IEEE80211_IF_FILE_OPS(link_##name, NULL, ieee80211_if_write_##name) 295 296 #define IEEE80211_IF_LINK_FILE_RW(name) \ 297 _IEEE80211_IF_LINK_R_FN(name) \ 298 _IEEE80211_IF_LINK_W_FN(name) \ 299 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, \ 300 ieee80211_if_write_##name) 301 302 #define IEEE80211_IF_LINK_FILE(name, field, format) \ 303 IEEE80211_IF_FMT_##format(name, struct ieee80211_link_data, field) \ 304 IEEE80211_IF_LINK_FILE_R(name) 305 306 /* common attributes */ 307 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[NL80211_BAND_2GHZ], 308 HEX); 309 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[NL80211_BAND_5GHZ], 310 HEX); 311 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz, 312 rc_rateidx_mcs_mask[NL80211_BAND_2GHZ], HEXARRAY); 313 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz, 314 rc_rateidx_mcs_mask[NL80211_BAND_5GHZ], HEXARRAY); 315 316 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz( 317 const struct ieee80211_sub_if_data *sdata, 318 char *buf, int buflen) 319 { 320 int i, len = 0; 321 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_2GHZ]; 322 323 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 324 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); 325 len += scnprintf(buf + len, buflen - len, "\n"); 326 327 return len; 328 } 329 330 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz); 331 332 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz( 333 const struct ieee80211_sub_if_data *sdata, 334 char *buf, int buflen) 335 { 336 int i, len = 0; 337 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_5GHZ]; 338 339 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 340 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); 341 len += scnprintf(buf + len, buflen - len, "\n"); 342 343 return len; 344 } 345 346 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz); 347 348 IEEE80211_IF_FILE(flags, flags, HEX); 349 IEEE80211_IF_FILE(state, state, LHEX); 350 IEEE80211_IF_LINK_FILE(txpower, conf->txpower, DEC); 351 IEEE80211_IF_LINK_FILE(ap_power_level, ap_power_level, DEC); 352 IEEE80211_IF_LINK_FILE(user_power_level, user_power_level, DEC); 353 354 static ssize_t 355 ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata, 356 char *buf, int buflen) 357 { 358 int len; 359 360 len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d\n", 361 sdata->vif.hw_queue[IEEE80211_AC_VO], 362 sdata->vif.hw_queue[IEEE80211_AC_VI], 363 sdata->vif.hw_queue[IEEE80211_AC_BE], 364 sdata->vif.hw_queue[IEEE80211_AC_BK]); 365 366 if (sdata->vif.type == NL80211_IFTYPE_AP) 367 len += scnprintf(buf + len, buflen - len, "cab queue: %d\n", 368 sdata->vif.cab_queue); 369 370 return len; 371 } 372 IEEE80211_IF_FILE_R(hw_queues); 373 374 /* STA attributes */ 375 IEEE80211_IF_FILE(bssid, deflink.u.mgd.bssid, MAC); 376 IEEE80211_IF_FILE(aid, vif.cfg.aid, DEC); 377 IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS); 378 379 static int ieee80211_set_smps(struct ieee80211_link_data *link, 380 enum ieee80211_smps_mode smps_mode) 381 { 382 struct ieee80211_sub_if_data *sdata = link->sdata; 383 struct ieee80211_local *local = sdata->local; 384 385 /* The driver indicated that EML is enabled for the interface, thus do 386 * not allow to override the SMPS state. 387 */ 388 if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE) 389 return -EOPNOTSUPP; 390 391 if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) && 392 smps_mode == IEEE80211_SMPS_STATIC) 393 return -EINVAL; 394 395 /* auto should be dynamic if in PS mode */ 396 if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) && 397 (smps_mode == IEEE80211_SMPS_DYNAMIC || 398 smps_mode == IEEE80211_SMPS_AUTOMATIC)) 399 return -EINVAL; 400 401 if (sdata->vif.type != NL80211_IFTYPE_STATION) 402 return -EOPNOTSUPP; 403 404 return __ieee80211_request_smps_mgd(link->sdata, link, smps_mode); 405 } 406 407 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { 408 [IEEE80211_SMPS_AUTOMATIC] = "auto", 409 [IEEE80211_SMPS_OFF] = "off", 410 [IEEE80211_SMPS_STATIC] = "static", 411 [IEEE80211_SMPS_DYNAMIC] = "dynamic", 412 }; 413 414 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_link_data *link, 415 char *buf, int buflen) 416 { 417 if (link->sdata->vif.type == NL80211_IFTYPE_STATION) 418 return snprintf(buf, buflen, "request: %s\nused: %s\n", 419 smps_modes[link->u.mgd.req_smps], 420 smps_modes[link->smps_mode]); 421 return -EINVAL; 422 } 423 424 static ssize_t ieee80211_if_parse_smps(struct ieee80211_link_data *link, 425 const char *buf, int buflen) 426 { 427 enum ieee80211_smps_mode mode; 428 429 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) { 430 if (strncmp(buf, smps_modes[mode], buflen) == 0) { 431 int err = ieee80211_set_smps(link, mode); 432 if (!err) 433 return buflen; 434 return err; 435 } 436 } 437 438 return -EINVAL; 439 } 440 IEEE80211_IF_LINK_FILE_RW(smps); 441 442 static ssize_t ieee80211_if_parse_tkip_mic_test( 443 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 444 { 445 struct ieee80211_local *local = sdata->local; 446 u8 addr[ETH_ALEN]; 447 struct sk_buff *skb; 448 struct ieee80211_hdr *hdr; 449 __le16 fc; 450 451 if (!mac_pton(buf, addr)) 452 return -EINVAL; 453 454 if (!ieee80211_sdata_running(sdata)) 455 return -ENOTCONN; 456 457 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100); 458 if (!skb) 459 return -ENOMEM; 460 skb_reserve(skb, local->hw.extra_tx_headroom); 461 462 hdr = skb_put_zero(skb, 24); 463 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); 464 465 switch (sdata->vif.type) { 466 case NL80211_IFTYPE_AP: 467 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); 468 /* DA BSSID SA */ 469 memcpy(hdr->addr1, addr, ETH_ALEN); 470 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 471 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN); 472 break; 473 case NL80211_IFTYPE_STATION: 474 fc |= cpu_to_le16(IEEE80211_FCTL_TODS); 475 /* BSSID SA DA */ 476 if (!sdata->u.mgd.associated) { 477 dev_kfree_skb(skb); 478 return -ENOTCONN; 479 } 480 memcpy(hdr->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN); 481 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 482 memcpy(hdr->addr3, addr, ETH_ALEN); 483 break; 484 default: 485 dev_kfree_skb(skb); 486 return -EOPNOTSUPP; 487 } 488 hdr->frame_control = fc; 489 490 /* 491 * Add some length to the test frame to make it look bit more valid. 492 * The exact contents does not matter since the recipient is required 493 * to drop this because of the Michael MIC failure. 494 */ 495 skb_put_zero(skb, 50); 496 497 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE; 498 499 ieee80211_tx_skb(sdata, skb); 500 501 return buflen; 502 } 503 IEEE80211_IF_FILE_W(tkip_mic_test); 504 505 static ssize_t ieee80211_if_parse_beacon_loss( 506 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 507 { 508 if (!ieee80211_sdata_running(sdata) || !sdata->vif.cfg.assoc) 509 return -ENOTCONN; 510 511 ieee80211_beacon_loss(&sdata->vif); 512 513 return buflen; 514 } 515 IEEE80211_IF_FILE_W(beacon_loss); 516 517 static ssize_t ieee80211_if_fmt_uapsd_queues( 518 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 519 { 520 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 521 522 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues); 523 } 524 525 static ssize_t ieee80211_if_parse_uapsd_queues( 526 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 527 { 528 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 529 u8 val; 530 int ret; 531 532 ret = kstrtou8(buf, 0, &val); 533 if (ret) 534 return ret; 535 536 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 537 return -ERANGE; 538 539 ifmgd->uapsd_queues = val; 540 541 return buflen; 542 } 543 IEEE80211_IF_FILE_RW(uapsd_queues); 544 545 static ssize_t ieee80211_if_fmt_uapsd_max_sp_len( 546 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 547 { 548 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 549 550 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len); 551 } 552 553 static ssize_t ieee80211_if_parse_uapsd_max_sp_len( 554 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 555 { 556 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 557 unsigned long val; 558 int ret; 559 560 ret = kstrtoul(buf, 0, &val); 561 if (ret) 562 return -EINVAL; 563 564 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 565 return -ERANGE; 566 567 ifmgd->uapsd_max_sp_len = val; 568 569 return buflen; 570 } 571 IEEE80211_IF_FILE_RW(uapsd_max_sp_len); 572 573 static ssize_t ieee80211_if_fmt_tdls_wider_bw( 574 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 575 { 576 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 577 bool tdls_wider_bw; 578 579 tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) && 580 !ifmgd->tdls_wider_bw_prohibited; 581 582 return snprintf(buf, buflen, "%d\n", tdls_wider_bw); 583 } 584 585 static ssize_t ieee80211_if_parse_tdls_wider_bw( 586 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 587 { 588 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 589 u8 val; 590 int ret; 591 592 ret = kstrtou8(buf, 0, &val); 593 if (ret) 594 return ret; 595 596 ifmgd->tdls_wider_bw_prohibited = !val; 597 return buflen; 598 } 599 IEEE80211_IF_FILE_RW(tdls_wider_bw); 600 601 /* AP attributes */ 602 IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC); 603 IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC); 604 IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC); 605 IEEE80211_IF_FILE(num_mcast_sta_vlan, u.vlan.num_mcast_sta, ATOMIC); 606 607 static ssize_t ieee80211_if_fmt_num_buffered_multicast( 608 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 609 { 610 return scnprintf(buf, buflen, "%u\n", 611 skb_queue_len(&sdata->u.ap.ps.bc_buf)); 612 } 613 IEEE80211_IF_FILE_R(num_buffered_multicast); 614 615 static ssize_t ieee80211_if_fmt_aqm( 616 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 617 { 618 struct ieee80211_local *local = sdata->local; 619 struct txq_info *txqi; 620 int len; 621 622 if (!sdata->vif.txq) 623 return 0; 624 625 txqi = to_txq_info(sdata->vif.txq); 626 627 spin_lock_bh(&local->fq.lock); 628 rcu_read_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 rcu_read_unlock(); 646 spin_unlock_bh(&local->fq.lock); 647 648 return len; 649 } 650 IEEE80211_IF_FILE_R(aqm); 651 652 IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX); 653 654 /* IBSS attributes */ 655 static ssize_t ieee80211_if_fmt_tsf( 656 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 657 { 658 struct ieee80211_local *local = sdata->local; 659 u64 tsf; 660 661 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata); 662 663 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf); 664 } 665 666 static ssize_t ieee80211_if_parse_tsf( 667 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 668 { 669 struct ieee80211_local *local = sdata->local; 670 unsigned long long tsf; 671 int ret; 672 int tsf_is_delta = 0; 673 674 if (strncmp(buf, "reset", 5) == 0) { 675 if (local->ops->reset_tsf) { 676 drv_reset_tsf(local, sdata); 677 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n"); 678 } 679 } else { 680 if (buflen > 10 && buf[1] == '=') { 681 if (buf[0] == '+') 682 tsf_is_delta = 1; 683 else if (buf[0] == '-') 684 tsf_is_delta = -1; 685 else 686 return -EINVAL; 687 buf += 2; 688 } 689 ret = kstrtoull(buf, 10, &tsf); 690 if (ret < 0) 691 return ret; 692 if (tsf_is_delta && local->ops->offset_tsf) { 693 drv_offset_tsf(local, sdata, tsf_is_delta * tsf); 694 wiphy_info(local->hw.wiphy, 695 "debugfs offset TSF by %018lld\n", 696 tsf_is_delta * tsf); 697 } else if (local->ops->set_tsf) { 698 if (tsf_is_delta) 699 tsf = drv_get_tsf(local, sdata) + 700 tsf_is_delta * tsf; 701 drv_set_tsf(local, sdata, tsf); 702 wiphy_info(local->hw.wiphy, 703 "debugfs set TSF to %#018llx\n", tsf); 704 } 705 } 706 707 ieee80211_recalc_dtim(local, sdata); 708 return buflen; 709 } 710 IEEE80211_IF_FILE_RW(tsf); 711 712 static ssize_t ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data *sdata, 713 char *buf, int buflen) 714 { 715 return snprintf(buf, buflen, "0x%x\n", sdata->vif.valid_links); 716 } 717 IEEE80211_IF_FILE_R(valid_links); 718 719 static ssize_t ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data *sdata, 720 char *buf, int buflen) 721 { 722 return snprintf(buf, buflen, "0x%x\n", sdata->vif.active_links); 723 } 724 725 static ssize_t ieee80211_if_parse_active_links(struct ieee80211_sub_if_data *sdata, 726 const char *buf, int buflen) 727 { 728 u16 active_links; 729 730 if (kstrtou16(buf, 0, &active_links)) 731 return -EINVAL; 732 733 return ieee80211_set_active_links(&sdata->vif, active_links) ?: buflen; 734 } 735 IEEE80211_IF_FILE_RW(active_links); 736 737 IEEE80211_IF_LINK_FILE(addr, conf->addr, MAC); 738 739 #ifdef CONFIG_MAC80211_MESH 740 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC); 741 742 /* Mesh stats attributes */ 743 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); 744 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); 745 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); 746 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); 747 IEEE80211_IF_FILE(dropped_frames_no_route, 748 u.mesh.mshstats.dropped_frames_no_route, DEC); 749 750 /* Mesh parameters */ 751 IEEE80211_IF_FILE(dot11MeshMaxRetries, 752 u.mesh.mshcfg.dot11MeshMaxRetries, DEC); 753 IEEE80211_IF_FILE(dot11MeshRetryTimeout, 754 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); 755 IEEE80211_IF_FILE(dot11MeshConfirmTimeout, 756 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); 757 IEEE80211_IF_FILE(dot11MeshHoldingTimeout, 758 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); 759 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); 760 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC); 761 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); 762 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, 763 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); 764 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, 765 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); 766 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, 767 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); 768 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval, 769 u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC); 770 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, 771 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); 772 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, 773 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); 774 IEEE80211_IF_FILE(path_refresh_time, 775 u.mesh.mshcfg.path_refresh_time, DEC); 776 IEEE80211_IF_FILE(min_discovery_timeout, 777 u.mesh.mshcfg.min_discovery_timeout, DEC); 778 IEEE80211_IF_FILE(dot11MeshHWMPRootMode, 779 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); 780 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, 781 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); 782 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, 783 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); 784 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); 785 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC); 786 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC); 787 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout, 788 u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC); 789 IEEE80211_IF_FILE(dot11MeshHWMProotInterval, 790 u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC); 791 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval, 792 u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC); 793 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC); 794 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration, 795 u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC); 796 IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate, 797 u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC); 798 IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC); 799 IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer, 800 u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC); 801 #endif 802 803 #define DEBUGFS_ADD_MODE(name, mode) \ 804 debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \ 805 sdata, &name##_ops) 806 807 #define DEBUGFS_ADD_X(_bits, _name, _mode) \ 808 debugfs_create_x##_bits(#_name, _mode, sdata->vif.debugfs_dir, \ 809 &sdata->vif._name) 810 811 #define DEBUGFS_ADD_X8(_name, _mode) \ 812 DEBUGFS_ADD_X(8, _name, _mode) 813 814 #define DEBUGFS_ADD_X16(_name, _mode) \ 815 DEBUGFS_ADD_X(16, _name, _mode) 816 817 #define DEBUGFS_ADD_X32(_name, _mode) \ 818 DEBUGFS_ADD_X(32, _name, _mode) 819 820 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400) 821 822 static void add_common_files(struct ieee80211_sub_if_data *sdata) 823 { 824 DEBUGFS_ADD(rc_rateidx_mask_2ghz); 825 DEBUGFS_ADD(rc_rateidx_mask_5ghz); 826 DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); 827 DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); 828 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz); 829 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz); 830 DEBUGFS_ADD(hw_queues); 831 832 if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 833 sdata->vif.type != NL80211_IFTYPE_NAN) 834 DEBUGFS_ADD(aqm); 835 } 836 837 static void add_sta_files(struct ieee80211_sub_if_data *sdata) 838 { 839 DEBUGFS_ADD(bssid); 840 DEBUGFS_ADD(aid); 841 DEBUGFS_ADD(beacon_timeout); 842 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 843 DEBUGFS_ADD_MODE(beacon_loss, 0200); 844 DEBUGFS_ADD_MODE(uapsd_queues, 0600); 845 DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600); 846 DEBUGFS_ADD_MODE(tdls_wider_bw, 0600); 847 DEBUGFS_ADD_MODE(valid_links, 0400); 848 DEBUGFS_ADD_MODE(active_links, 0600); 849 DEBUGFS_ADD_X16(dormant_links, 0400); 850 } 851 852 static void add_ap_files(struct ieee80211_sub_if_data *sdata) 853 { 854 DEBUGFS_ADD(num_mcast_sta); 855 DEBUGFS_ADD(num_sta_ps); 856 DEBUGFS_ADD(dtim_count); 857 DEBUGFS_ADD(num_buffered_multicast); 858 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 859 DEBUGFS_ADD_MODE(multicast_to_unicast, 0600); 860 } 861 862 static void add_vlan_files(struct ieee80211_sub_if_data *sdata) 863 { 864 /* add num_mcast_sta_vlan using name num_mcast_sta */ 865 debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir, 866 sdata, &num_mcast_sta_vlan_ops); 867 } 868 869 static void add_ibss_files(struct ieee80211_sub_if_data *sdata) 870 { 871 DEBUGFS_ADD_MODE(tsf, 0600); 872 } 873 874 #ifdef CONFIG_MAC80211_MESH 875 876 static void add_mesh_files(struct ieee80211_sub_if_data *sdata) 877 { 878 DEBUGFS_ADD_MODE(tsf, 0600); 879 DEBUGFS_ADD_MODE(estab_plinks, 0400); 880 } 881 882 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) 883 { 884 struct dentry *dir = debugfs_create_dir("mesh_stats", 885 sdata->vif.debugfs_dir); 886 #define MESHSTATS_ADD(name)\ 887 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops) 888 889 MESHSTATS_ADD(fwded_mcast); 890 MESHSTATS_ADD(fwded_unicast); 891 MESHSTATS_ADD(fwded_frames); 892 MESHSTATS_ADD(dropped_frames_ttl); 893 MESHSTATS_ADD(dropped_frames_no_route); 894 #undef MESHSTATS_ADD 895 } 896 897 static void add_mesh_config(struct ieee80211_sub_if_data *sdata) 898 { 899 struct dentry *dir = debugfs_create_dir("mesh_config", 900 sdata->vif.debugfs_dir); 901 902 #define MESHPARAMS_ADD(name) \ 903 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops) 904 905 MESHPARAMS_ADD(dot11MeshMaxRetries); 906 MESHPARAMS_ADD(dot11MeshRetryTimeout); 907 MESHPARAMS_ADD(dot11MeshConfirmTimeout); 908 MESHPARAMS_ADD(dot11MeshHoldingTimeout); 909 MESHPARAMS_ADD(dot11MeshTTL); 910 MESHPARAMS_ADD(element_ttl); 911 MESHPARAMS_ADD(auto_open_plinks); 912 MESHPARAMS_ADD(dot11MeshMaxPeerLinks); 913 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); 914 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); 915 MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval); 916 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); 917 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); 918 MESHPARAMS_ADD(path_refresh_time); 919 MESHPARAMS_ADD(min_discovery_timeout); 920 MESHPARAMS_ADD(dot11MeshHWMPRootMode); 921 MESHPARAMS_ADD(dot11MeshHWMPRannInterval); 922 MESHPARAMS_ADD(dot11MeshForwarding); 923 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol); 924 MESHPARAMS_ADD(rssi_threshold); 925 MESHPARAMS_ADD(ht_opmode); 926 MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout); 927 MESHPARAMS_ADD(dot11MeshHWMProotInterval); 928 MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval); 929 MESHPARAMS_ADD(power_mode); 930 MESHPARAMS_ADD(dot11MeshAwakeWindowDuration); 931 MESHPARAMS_ADD(dot11MeshConnectedToMeshGate); 932 MESHPARAMS_ADD(dot11MeshNolearn); 933 MESHPARAMS_ADD(dot11MeshConnectedToAuthServer); 934 #undef MESHPARAMS_ADD 935 } 936 #endif 937 938 static void add_files(struct ieee80211_sub_if_data *sdata) 939 { 940 if (!sdata->vif.debugfs_dir) 941 return; 942 943 DEBUGFS_ADD(flags); 944 DEBUGFS_ADD(state); 945 946 if (sdata->vif.type != NL80211_IFTYPE_MONITOR) 947 add_common_files(sdata); 948 949 switch (sdata->vif.type) { 950 case NL80211_IFTYPE_MESH_POINT: 951 #ifdef CONFIG_MAC80211_MESH 952 add_mesh_files(sdata); 953 add_mesh_stats(sdata); 954 add_mesh_config(sdata); 955 #endif 956 break; 957 case NL80211_IFTYPE_STATION: 958 add_sta_files(sdata); 959 break; 960 case NL80211_IFTYPE_ADHOC: 961 add_ibss_files(sdata); 962 break; 963 case NL80211_IFTYPE_AP: 964 add_ap_files(sdata); 965 break; 966 case NL80211_IFTYPE_AP_VLAN: 967 add_vlan_files(sdata); 968 break; 969 default: 970 break; 971 } 972 } 973 974 #undef DEBUGFS_ADD_MODE 975 #undef DEBUGFS_ADD 976 977 #define DEBUGFS_ADD_MODE(dentry, name, mode) \ 978 debugfs_create_file(#name, mode, dentry, \ 979 link, &link_##name##_ops) 980 981 #define DEBUGFS_ADD(dentry, name) DEBUGFS_ADD_MODE(dentry, name, 0400) 982 983 static void add_link_files(struct ieee80211_link_data *link, 984 struct dentry *dentry) 985 { 986 DEBUGFS_ADD(dentry, txpower); 987 DEBUGFS_ADD(dentry, user_power_level); 988 DEBUGFS_ADD(dentry, ap_power_level); 989 990 switch (link->sdata->vif.type) { 991 case NL80211_IFTYPE_STATION: 992 DEBUGFS_ADD_MODE(dentry, smps, 0600); 993 break; 994 default: 995 break; 996 } 997 } 998 999 static void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata, 1000 bool mld_vif) 1001 { 1002 char buf[10+IFNAMSIZ]; 1003 1004 sprintf(buf, "netdev:%s", sdata->name); 1005 sdata->vif.debugfs_dir = debugfs_create_dir(buf, 1006 sdata->local->hw.wiphy->debugfsdir); 1007 /* deflink also has this */ 1008 sdata->deflink.debugfs_dir = sdata->vif.debugfs_dir; 1009 sdata->debugfs.subdir_stations = debugfs_create_dir("stations", 1010 sdata->vif.debugfs_dir); 1011 add_files(sdata); 1012 if (!mld_vif) 1013 add_link_files(&sdata->deflink, sdata->vif.debugfs_dir); 1014 } 1015 1016 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) 1017 { 1018 if (!sdata->vif.debugfs_dir) 1019 return; 1020 1021 debugfs_remove_recursive(sdata->vif.debugfs_dir); 1022 sdata->vif.debugfs_dir = NULL; 1023 sdata->debugfs.subdir_stations = NULL; 1024 } 1025 1026 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) 1027 { 1028 struct dentry *dir; 1029 char buf[10 + IFNAMSIZ]; 1030 1031 dir = sdata->vif.debugfs_dir; 1032 1033 if (IS_ERR_OR_NULL(dir)) 1034 return; 1035 1036 sprintf(buf, "netdev:%s", sdata->name); 1037 debugfs_rename(dir->d_parent, dir, dir->d_parent, buf); 1038 } 1039 1040 void ieee80211_debugfs_recreate_netdev(struct ieee80211_sub_if_data *sdata, 1041 bool mld_vif) 1042 { 1043 ieee80211_debugfs_remove_netdev(sdata); 1044 ieee80211_debugfs_add_netdev(sdata, mld_vif); 1045 1046 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) { 1047 drv_vif_add_debugfs(sdata->local, sdata); 1048 if (!mld_vif) 1049 ieee80211_link_debugfs_drv_add(&sdata->deflink); 1050 } 1051 } 1052 1053 void ieee80211_link_debugfs_add(struct ieee80211_link_data *link) 1054 { 1055 char link_dir_name[10]; 1056 1057 if (WARN_ON(!link->sdata->vif.debugfs_dir || link->debugfs_dir)) 1058 return; 1059 1060 /* For now, this should not be called for non-MLO capable drivers */ 1061 if (WARN_ON(!(link->sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))) 1062 return; 1063 1064 snprintf(link_dir_name, sizeof(link_dir_name), 1065 "link-%d", link->link_id); 1066 1067 link->debugfs_dir = 1068 debugfs_create_dir(link_dir_name, 1069 link->sdata->vif.debugfs_dir); 1070 1071 DEBUGFS_ADD(link->debugfs_dir, addr); 1072 add_link_files(link, link->debugfs_dir); 1073 } 1074 1075 void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link) 1076 { 1077 if (!link->sdata->vif.debugfs_dir || !link->debugfs_dir) { 1078 link->debugfs_dir = NULL; 1079 return; 1080 } 1081 1082 if (link->debugfs_dir == link->sdata->vif.debugfs_dir) { 1083 WARN_ON(link != &link->sdata->deflink); 1084 link->debugfs_dir = NULL; 1085 return; 1086 } 1087 1088 debugfs_remove_recursive(link->debugfs_dir); 1089 link->debugfs_dir = NULL; 1090 } 1091 1092 void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link) 1093 { 1094 if (link->sdata->vif.type == NL80211_IFTYPE_MONITOR || 1095 WARN_ON(!link->debugfs_dir)) 1096 return; 1097 1098 drv_link_add_debugfs(link->sdata->local, link->sdata, 1099 link->conf, link->debugfs_dir); 1100 } 1101 1102 void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link) 1103 { 1104 if (!link || !link->debugfs_dir) 1105 return; 1106 1107 if (WARN_ON(link->debugfs_dir == link->sdata->vif.debugfs_dir)) 1108 return; 1109 1110 /* Recreate the directory excluding the driver data */ 1111 debugfs_remove_recursive(link->debugfs_dir); 1112 link->debugfs_dir = NULL; 1113 1114 ieee80211_link_debugfs_add(link); 1115 } 1116