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 file_operations name##_ops = { \ 225 .read = (_read), \ 226 .write = (_write), \ 227 .open = simple_open, \ 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 rcu_read_lock(); 630 631 len = scnprintf(buf, 632 buflen, 633 "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n" 634 "%u %u %u %u %u %u %u %u %u %u\n", 635 txqi->txq.ac, 636 txqi->tin.backlog_bytes, 637 txqi->tin.backlog_packets, 638 txqi->tin.flows, 639 txqi->cstats.drop_count, 640 txqi->cstats.ecn_mark, 641 txqi->tin.overlimit, 642 txqi->tin.collisions, 643 txqi->tin.tx_bytes, 644 txqi->tin.tx_packets); 645 646 rcu_read_unlock(); 647 spin_unlock_bh(&local->fq.lock); 648 649 return len; 650 } 651 IEEE80211_IF_FILE_R(aqm); 652 653 IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX); 654 655 /* IBSS attributes */ 656 static ssize_t ieee80211_if_fmt_tsf( 657 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 658 { 659 struct ieee80211_local *local = sdata->local; 660 u64 tsf; 661 662 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata); 663 664 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf); 665 } 666 667 static ssize_t ieee80211_if_parse_tsf( 668 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 669 { 670 struct ieee80211_local *local = sdata->local; 671 unsigned long long tsf; 672 int ret; 673 int tsf_is_delta = 0; 674 675 if (strncmp(buf, "reset", 5) == 0) { 676 if (local->ops->reset_tsf) { 677 drv_reset_tsf(local, sdata); 678 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n"); 679 } 680 } else { 681 if (buflen > 10 && buf[1] == '=') { 682 if (buf[0] == '+') 683 tsf_is_delta = 1; 684 else if (buf[0] == '-') 685 tsf_is_delta = -1; 686 else 687 return -EINVAL; 688 buf += 2; 689 } 690 ret = kstrtoull(buf, 10, &tsf); 691 if (ret < 0) 692 return ret; 693 if (tsf_is_delta && local->ops->offset_tsf) { 694 drv_offset_tsf(local, sdata, tsf_is_delta * tsf); 695 wiphy_info(local->hw.wiphy, 696 "debugfs offset TSF by %018lld\n", 697 tsf_is_delta * tsf); 698 } else if (local->ops->set_tsf) { 699 if (tsf_is_delta) 700 tsf = drv_get_tsf(local, sdata) + 701 tsf_is_delta * tsf; 702 drv_set_tsf(local, sdata, tsf); 703 wiphy_info(local->hw.wiphy, 704 "debugfs set TSF to %#018llx\n", tsf); 705 } 706 } 707 708 ieee80211_recalc_dtim(local, sdata); 709 return buflen; 710 } 711 IEEE80211_IF_FILE_RW(tsf); 712 713 static ssize_t ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data *sdata, 714 char *buf, int buflen) 715 { 716 return snprintf(buf, buflen, "0x%x\n", sdata->vif.valid_links); 717 } 718 IEEE80211_IF_FILE_R(valid_links); 719 720 static ssize_t ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data *sdata, 721 char *buf, int buflen) 722 { 723 return snprintf(buf, buflen, "0x%x\n", sdata->vif.active_links); 724 } 725 726 static ssize_t ieee80211_if_parse_active_links(struct ieee80211_sub_if_data *sdata, 727 const char *buf, int buflen) 728 { 729 u16 active_links; 730 731 if (kstrtou16(buf, 0, &active_links)) 732 return -EINVAL; 733 734 return ieee80211_set_active_links(&sdata->vif, active_links) ?: buflen; 735 } 736 IEEE80211_IF_FILE_RW(active_links); 737 738 IEEE80211_IF_LINK_FILE(addr, conf->addr, MAC); 739 740 #ifdef CONFIG_MAC80211_MESH 741 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC); 742 743 /* Mesh stats attributes */ 744 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); 745 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); 746 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); 747 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); 748 IEEE80211_IF_FILE(dropped_frames_no_route, 749 u.mesh.mshstats.dropped_frames_no_route, DEC); 750 751 /* Mesh parameters */ 752 IEEE80211_IF_FILE(dot11MeshMaxRetries, 753 u.mesh.mshcfg.dot11MeshMaxRetries, DEC); 754 IEEE80211_IF_FILE(dot11MeshRetryTimeout, 755 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); 756 IEEE80211_IF_FILE(dot11MeshConfirmTimeout, 757 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); 758 IEEE80211_IF_FILE(dot11MeshHoldingTimeout, 759 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); 760 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); 761 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC); 762 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); 763 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, 764 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); 765 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, 766 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); 767 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, 768 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); 769 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval, 770 u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC); 771 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, 772 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); 773 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, 774 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); 775 IEEE80211_IF_FILE(path_refresh_time, 776 u.mesh.mshcfg.path_refresh_time, DEC); 777 IEEE80211_IF_FILE(min_discovery_timeout, 778 u.mesh.mshcfg.min_discovery_timeout, DEC); 779 IEEE80211_IF_FILE(dot11MeshHWMPRootMode, 780 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); 781 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, 782 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); 783 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, 784 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); 785 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); 786 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC); 787 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC); 788 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout, 789 u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC); 790 IEEE80211_IF_FILE(dot11MeshHWMProotInterval, 791 u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC); 792 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval, 793 u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC); 794 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC); 795 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration, 796 u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC); 797 IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate, 798 u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC); 799 IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC); 800 IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer, 801 u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC); 802 #endif 803 804 #define DEBUGFS_ADD_MODE(name, mode) \ 805 debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \ 806 sdata, &name##_ops) 807 808 #define DEBUGFS_ADD_X(_bits, _name, _mode) \ 809 debugfs_create_x##_bits(#_name, _mode, sdata->vif.debugfs_dir, \ 810 &sdata->vif._name) 811 812 #define DEBUGFS_ADD_X8(_name, _mode) \ 813 DEBUGFS_ADD_X(8, _name, _mode) 814 815 #define DEBUGFS_ADD_X16(_name, _mode) \ 816 DEBUGFS_ADD_X(16, _name, _mode) 817 818 #define DEBUGFS_ADD_X32(_name, _mode) \ 819 DEBUGFS_ADD_X(32, _name, _mode) 820 821 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400) 822 823 static void add_common_files(struct ieee80211_sub_if_data *sdata) 824 { 825 DEBUGFS_ADD(rc_rateidx_mask_2ghz); 826 DEBUGFS_ADD(rc_rateidx_mask_5ghz); 827 DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); 828 DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); 829 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz); 830 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz); 831 DEBUGFS_ADD(hw_queues); 832 833 if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 834 sdata->vif.type != NL80211_IFTYPE_NAN) 835 DEBUGFS_ADD(aqm); 836 } 837 838 static void add_sta_files(struct ieee80211_sub_if_data *sdata) 839 { 840 DEBUGFS_ADD(bssid); 841 DEBUGFS_ADD(aid); 842 DEBUGFS_ADD(beacon_timeout); 843 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 844 DEBUGFS_ADD_MODE(beacon_loss, 0200); 845 DEBUGFS_ADD_MODE(uapsd_queues, 0600); 846 DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600); 847 DEBUGFS_ADD_MODE(tdls_wider_bw, 0600); 848 DEBUGFS_ADD_MODE(valid_links, 0400); 849 DEBUGFS_ADD_MODE(active_links, 0600); 850 DEBUGFS_ADD_X16(dormant_links, 0400); 851 } 852 853 static void add_ap_files(struct ieee80211_sub_if_data *sdata) 854 { 855 DEBUGFS_ADD(num_mcast_sta); 856 DEBUGFS_ADD(num_sta_ps); 857 DEBUGFS_ADD(dtim_count); 858 DEBUGFS_ADD(num_buffered_multicast); 859 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 860 DEBUGFS_ADD_MODE(multicast_to_unicast, 0600); 861 } 862 863 static void add_vlan_files(struct ieee80211_sub_if_data *sdata) 864 { 865 /* add num_mcast_sta_vlan using name num_mcast_sta */ 866 debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir, 867 sdata, &num_mcast_sta_vlan_ops); 868 } 869 870 static void add_ibss_files(struct ieee80211_sub_if_data *sdata) 871 { 872 DEBUGFS_ADD_MODE(tsf, 0600); 873 } 874 875 #ifdef CONFIG_MAC80211_MESH 876 877 static void add_mesh_files(struct ieee80211_sub_if_data *sdata) 878 { 879 DEBUGFS_ADD_MODE(tsf, 0600); 880 DEBUGFS_ADD_MODE(estab_plinks, 0400); 881 } 882 883 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) 884 { 885 struct dentry *dir = debugfs_create_dir("mesh_stats", 886 sdata->vif.debugfs_dir); 887 #define MESHSTATS_ADD(name)\ 888 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops) 889 890 MESHSTATS_ADD(fwded_mcast); 891 MESHSTATS_ADD(fwded_unicast); 892 MESHSTATS_ADD(fwded_frames); 893 MESHSTATS_ADD(dropped_frames_ttl); 894 MESHSTATS_ADD(dropped_frames_no_route); 895 #undef MESHSTATS_ADD 896 } 897 898 static void add_mesh_config(struct ieee80211_sub_if_data *sdata) 899 { 900 struct dentry *dir = debugfs_create_dir("mesh_config", 901 sdata->vif.debugfs_dir); 902 903 #define MESHPARAMS_ADD(name) \ 904 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops) 905 906 MESHPARAMS_ADD(dot11MeshMaxRetries); 907 MESHPARAMS_ADD(dot11MeshRetryTimeout); 908 MESHPARAMS_ADD(dot11MeshConfirmTimeout); 909 MESHPARAMS_ADD(dot11MeshHoldingTimeout); 910 MESHPARAMS_ADD(dot11MeshTTL); 911 MESHPARAMS_ADD(element_ttl); 912 MESHPARAMS_ADD(auto_open_plinks); 913 MESHPARAMS_ADD(dot11MeshMaxPeerLinks); 914 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); 915 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); 916 MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval); 917 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); 918 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); 919 MESHPARAMS_ADD(path_refresh_time); 920 MESHPARAMS_ADD(min_discovery_timeout); 921 MESHPARAMS_ADD(dot11MeshHWMPRootMode); 922 MESHPARAMS_ADD(dot11MeshHWMPRannInterval); 923 MESHPARAMS_ADD(dot11MeshForwarding); 924 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol); 925 MESHPARAMS_ADD(rssi_threshold); 926 MESHPARAMS_ADD(ht_opmode); 927 MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout); 928 MESHPARAMS_ADD(dot11MeshHWMProotInterval); 929 MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval); 930 MESHPARAMS_ADD(power_mode); 931 MESHPARAMS_ADD(dot11MeshAwakeWindowDuration); 932 MESHPARAMS_ADD(dot11MeshConnectedToMeshGate); 933 MESHPARAMS_ADD(dot11MeshNolearn); 934 MESHPARAMS_ADD(dot11MeshConnectedToAuthServer); 935 #undef MESHPARAMS_ADD 936 } 937 #endif 938 939 static void add_files(struct ieee80211_sub_if_data *sdata) 940 { 941 if (!sdata->vif.debugfs_dir) 942 return; 943 944 DEBUGFS_ADD(flags); 945 DEBUGFS_ADD(state); 946 947 if (sdata->vif.type != NL80211_IFTYPE_MONITOR) 948 add_common_files(sdata); 949 950 switch (sdata->vif.type) { 951 case NL80211_IFTYPE_MESH_POINT: 952 #ifdef CONFIG_MAC80211_MESH 953 add_mesh_files(sdata); 954 add_mesh_stats(sdata); 955 add_mesh_config(sdata); 956 #endif 957 break; 958 case NL80211_IFTYPE_STATION: 959 add_sta_files(sdata); 960 break; 961 case NL80211_IFTYPE_ADHOC: 962 add_ibss_files(sdata); 963 break; 964 case NL80211_IFTYPE_AP: 965 add_ap_files(sdata); 966 break; 967 case NL80211_IFTYPE_AP_VLAN: 968 add_vlan_files(sdata); 969 break; 970 default: 971 break; 972 } 973 } 974 975 #undef DEBUGFS_ADD_MODE 976 #undef DEBUGFS_ADD 977 978 #define DEBUGFS_ADD_MODE(dentry, name, mode) \ 979 debugfs_create_file(#name, mode, dentry, \ 980 link, &link_##name##_ops) 981 982 #define DEBUGFS_ADD(dentry, name) DEBUGFS_ADD_MODE(dentry, name, 0400) 983 984 static void add_link_files(struct ieee80211_link_data *link, 985 struct dentry *dentry) 986 { 987 DEBUGFS_ADD(dentry, txpower); 988 DEBUGFS_ADD(dentry, user_power_level); 989 DEBUGFS_ADD(dentry, ap_power_level); 990 991 switch (link->sdata->vif.type) { 992 case NL80211_IFTYPE_STATION: 993 DEBUGFS_ADD_MODE(dentry, smps, 0600); 994 break; 995 default: 996 break; 997 } 998 } 999 1000 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata, 1001 bool mld_vif) 1002 { 1003 char buf[10+IFNAMSIZ]; 1004 1005 sprintf(buf, "netdev:%s", sdata->name); 1006 sdata->vif.debugfs_dir = debugfs_create_dir(buf, 1007 sdata->local->hw.wiphy->debugfsdir); 1008 /* deflink also has this */ 1009 sdata->deflink.debugfs_dir = sdata->vif.debugfs_dir; 1010 sdata->debugfs.subdir_stations = debugfs_create_dir("stations", 1011 sdata->vif.debugfs_dir); 1012 add_files(sdata); 1013 if (!mld_vif) 1014 add_link_files(&sdata->deflink, sdata->vif.debugfs_dir); 1015 } 1016 1017 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) 1018 { 1019 if (!sdata->vif.debugfs_dir) 1020 return; 1021 1022 debugfs_remove_recursive(sdata->vif.debugfs_dir); 1023 sdata->vif.debugfs_dir = NULL; 1024 sdata->debugfs.subdir_stations = NULL; 1025 } 1026 1027 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) 1028 { 1029 struct dentry *dir; 1030 char buf[10 + IFNAMSIZ]; 1031 1032 dir = sdata->vif.debugfs_dir; 1033 1034 if (IS_ERR_OR_NULL(dir)) 1035 return; 1036 1037 sprintf(buf, "netdev:%s", sdata->name); 1038 debugfs_rename(dir->d_parent, dir, dir->d_parent, buf); 1039 } 1040 1041 void ieee80211_debugfs_recreate_netdev(struct ieee80211_sub_if_data *sdata, 1042 bool mld_vif) 1043 { 1044 ieee80211_debugfs_remove_netdev(sdata); 1045 ieee80211_debugfs_add_netdev(sdata, mld_vif); 1046 1047 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) { 1048 drv_vif_add_debugfs(sdata->local, sdata); 1049 if (!mld_vif) 1050 ieee80211_link_debugfs_drv_add(&sdata->deflink); 1051 } 1052 } 1053 1054 void ieee80211_link_debugfs_add(struct ieee80211_link_data *link) 1055 { 1056 char link_dir_name[10]; 1057 1058 if (WARN_ON(!link->sdata->vif.debugfs_dir || link->debugfs_dir)) 1059 return; 1060 1061 /* For now, this should not be called for non-MLO capable drivers */ 1062 if (WARN_ON(!(link->sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))) 1063 return; 1064 1065 snprintf(link_dir_name, sizeof(link_dir_name), 1066 "link-%d", link->link_id); 1067 1068 link->debugfs_dir = 1069 debugfs_create_dir(link_dir_name, 1070 link->sdata->vif.debugfs_dir); 1071 1072 DEBUGFS_ADD(link->debugfs_dir, addr); 1073 add_link_files(link, link->debugfs_dir); 1074 } 1075 1076 void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link) 1077 { 1078 if (!link->sdata->vif.debugfs_dir || !link->debugfs_dir) { 1079 link->debugfs_dir = NULL; 1080 return; 1081 } 1082 1083 if (link->debugfs_dir == link->sdata->vif.debugfs_dir) { 1084 WARN_ON(link != &link->sdata->deflink); 1085 link->debugfs_dir = NULL; 1086 return; 1087 } 1088 1089 debugfs_remove_recursive(link->debugfs_dir); 1090 link->debugfs_dir = NULL; 1091 } 1092 1093 void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link) 1094 { 1095 if (link->sdata->vif.type == NL80211_IFTYPE_MONITOR || 1096 WARN_ON(!link->debugfs_dir)) 1097 return; 1098 1099 drv_link_add_debugfs(link->sdata->local, link->sdata, 1100 link->conf, link->debugfs_dir); 1101 } 1102 1103 void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link) 1104 { 1105 if (!link || !link->debugfs_dir) 1106 return; 1107 1108 if (WARN_ON(link->debugfs_dir == link->sdata->vif.debugfs_dir)) 1109 return; 1110 1111 /* Recreate the directory excluding the driver data */ 1112 debugfs_remove_recursive(link->debugfs_dir); 1113 link->debugfs_dir = NULL; 1114 1115 ieee80211_link_debugfs_add(link); 1116 } 1117