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) 2020-2022 Intel Corporation 6 */ 7 8 #include <linux/kernel.h> 9 #include <linux/device.h> 10 #include <linux/if.h> 11 #include <linux/if_ether.h> 12 #include <linux/interrupt.h> 13 #include <linux/netdevice.h> 14 #include <linux/rtnetlink.h> 15 #include <linux/slab.h> 16 #include <linux/notifier.h> 17 #include <net/mac80211.h> 18 #include <net/cfg80211.h> 19 #include "ieee80211_i.h" 20 #include "rate.h" 21 #include "debugfs.h" 22 #include "debugfs_netdev.h" 23 #include "driver-ops.h" 24 25 static ssize_t ieee80211_if_read( 26 void *data, 27 char __user *userbuf, 28 size_t count, loff_t *ppos, 29 ssize_t (*format)(const void *, char *, int)) 30 { 31 char buf[200]; 32 ssize_t ret = -EINVAL; 33 34 read_lock(&dev_base_lock); 35 ret = (*format)(data, buf, sizeof(buf)); 36 read_unlock(&dev_base_lock); 37 38 if (ret >= 0) 39 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret); 40 41 return ret; 42 } 43 44 static ssize_t ieee80211_if_write( 45 void *data, 46 const char __user *userbuf, 47 size_t count, loff_t *ppos, 48 ssize_t (*write)(void *, const char *, int)) 49 { 50 char buf[64]; 51 ssize_t ret; 52 53 if (count >= sizeof(buf)) 54 return -E2BIG; 55 56 if (copy_from_user(buf, userbuf, count)) 57 return -EFAULT; 58 buf[count] = '\0'; 59 60 rtnl_lock(); 61 ret = (*write)(data, buf, count); 62 rtnl_unlock(); 63 64 return ret; 65 } 66 67 #define IEEE80211_IF_FMT(name, type, field, format_string) \ 68 static ssize_t ieee80211_if_fmt_##name( \ 69 const type *data, char *buf, \ 70 int buflen) \ 71 { \ 72 return scnprintf(buf, buflen, format_string, data->field); \ 73 } 74 #define IEEE80211_IF_FMT_DEC(name, type, field) \ 75 IEEE80211_IF_FMT(name, type, field, "%d\n") 76 #define IEEE80211_IF_FMT_HEX(name, type, field) \ 77 IEEE80211_IF_FMT(name, type, field, "%#x\n") 78 #define IEEE80211_IF_FMT_LHEX(name, type, field) \ 79 IEEE80211_IF_FMT(name, type, field, "%#lx\n") 80 81 #define IEEE80211_IF_FMT_HEXARRAY(name, type, field) \ 82 static ssize_t ieee80211_if_fmt_##name( \ 83 const type *data, \ 84 char *buf, int buflen) \ 85 { \ 86 char *p = buf; \ 87 int i; \ 88 for (i = 0; i < sizeof(data->field); i++) { \ 89 p += scnprintf(p, buflen + buf - p, "%.2x ", \ 90 data->field[i]); \ 91 } \ 92 p += scnprintf(p, buflen + buf - p, "\n"); \ 93 return p - buf; \ 94 } 95 96 #define IEEE80211_IF_FMT_ATOMIC(name, type, field) \ 97 static ssize_t ieee80211_if_fmt_##name( \ 98 const type *data, \ 99 char *buf, int buflen) \ 100 { \ 101 return scnprintf(buf, buflen, "%d\n", atomic_read(&data->field));\ 102 } 103 104 #define IEEE80211_IF_FMT_MAC(name, type, field) \ 105 static ssize_t ieee80211_if_fmt_##name( \ 106 const type *data, char *buf, \ 107 int buflen) \ 108 { \ 109 return scnprintf(buf, buflen, "%pM\n", data->field); \ 110 } 111 112 #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, type, field) \ 113 static ssize_t ieee80211_if_fmt_##name( \ 114 const type *data, \ 115 char *buf, int buflen) \ 116 { \ 117 return scnprintf(buf, buflen, "%d\n", \ 118 jiffies_to_msecs(data->field)); \ 119 } 120 121 #define _IEEE80211_IF_FILE_OPS(name, _read, _write) \ 122 static const struct file_operations name##_ops = { \ 123 .read = (_read), \ 124 .write = (_write), \ 125 .open = simple_open, \ 126 .llseek = generic_file_llseek, \ 127 } 128 129 #define _IEEE80211_IF_FILE_R_FN(name, type) \ 130 static ssize_t ieee80211_if_read_##name(struct file *file, \ 131 char __user *userbuf, \ 132 size_t count, loff_t *ppos) \ 133 { \ 134 ssize_t (*fn)(const void *, char *, int) = (void *) \ 135 ((ssize_t (*)(const type, char *, int)) \ 136 ieee80211_if_fmt_##name); \ 137 return ieee80211_if_read(file->private_data, \ 138 userbuf, count, ppos, fn); \ 139 } 140 141 #define _IEEE80211_IF_FILE_W_FN(name, type) \ 142 static ssize_t ieee80211_if_write_##name(struct file *file, \ 143 const char __user *userbuf, \ 144 size_t count, loff_t *ppos) \ 145 { \ 146 ssize_t (*fn)(void *, const char *, int) = (void *) \ 147 ((ssize_t (*)(type, const char *, int)) \ 148 ieee80211_if_parse_##name); \ 149 return ieee80211_if_write(file->private_data, userbuf, count, \ 150 ppos, fn); \ 151 } 152 153 #define IEEE80211_IF_FILE_R(name) \ 154 _IEEE80211_IF_FILE_R_FN(name, struct ieee80211_sub_if_data *) \ 155 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL) 156 157 #define IEEE80211_IF_FILE_W(name) \ 158 _IEEE80211_IF_FILE_W_FN(name, struct ieee80211_sub_if_data *) \ 159 _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name) 160 161 #define IEEE80211_IF_FILE_RW(name) \ 162 _IEEE80211_IF_FILE_R_FN(name, struct ieee80211_sub_if_data *) \ 163 _IEEE80211_IF_FILE_W_FN(name, struct ieee80211_sub_if_data *) \ 164 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, \ 165 ieee80211_if_write_##name) 166 167 #define IEEE80211_IF_FILE(name, field, format) \ 168 IEEE80211_IF_FMT_##format(name, struct ieee80211_sub_if_data, field) \ 169 IEEE80211_IF_FILE_R(name) 170 171 /* Same but with a link_ prefix in the ops variable name and different type */ 172 #define IEEE80211_IF_LINK_FILE_R(name) \ 173 _IEEE80211_IF_FILE_R_FN(name, struct ieee80211_link_data *) \ 174 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, NULL) 175 176 #define IEEE80211_IF_LINK_FILE_W(name) \ 177 _IEEE80211_IF_FILE_W_FN(name) \ 178 _IEEE80211_IF_FILE_OPS(link_##name, NULL, ieee80211_if_write_##name) 179 180 #define IEEE80211_IF_LINK_FILE_RW(name) \ 181 _IEEE80211_IF_FILE_R_FN(name, struct ieee80211_link_data *) \ 182 _IEEE80211_IF_FILE_W_FN(name, struct ieee80211_link_data *) \ 183 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, \ 184 ieee80211_if_write_##name) 185 186 #define IEEE80211_IF_LINK_FILE(name, field, format) \ 187 IEEE80211_IF_FMT_##format(name, struct ieee80211_link_data, field) \ 188 IEEE80211_IF_LINK_FILE_R(name) 189 190 /* common attributes */ 191 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[NL80211_BAND_2GHZ], 192 HEX); 193 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[NL80211_BAND_5GHZ], 194 HEX); 195 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz, 196 rc_rateidx_mcs_mask[NL80211_BAND_2GHZ], HEXARRAY); 197 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz, 198 rc_rateidx_mcs_mask[NL80211_BAND_5GHZ], HEXARRAY); 199 200 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz( 201 const struct ieee80211_sub_if_data *sdata, 202 char *buf, int buflen) 203 { 204 int i, len = 0; 205 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_2GHZ]; 206 207 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 208 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); 209 len += scnprintf(buf + len, buflen - len, "\n"); 210 211 return len; 212 } 213 214 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz); 215 216 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz( 217 const struct ieee80211_sub_if_data *sdata, 218 char *buf, int buflen) 219 { 220 int i, len = 0; 221 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_5GHZ]; 222 223 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 224 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); 225 len += scnprintf(buf + len, buflen - len, "\n"); 226 227 return len; 228 } 229 230 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz); 231 232 IEEE80211_IF_FILE(flags, flags, HEX); 233 IEEE80211_IF_FILE(state, state, LHEX); 234 IEEE80211_IF_LINK_FILE(txpower, conf->txpower, DEC); 235 IEEE80211_IF_LINK_FILE(ap_power_level, ap_power_level, DEC); 236 IEEE80211_IF_LINK_FILE(user_power_level, user_power_level, DEC); 237 238 static ssize_t 239 ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata, 240 char *buf, int buflen) 241 { 242 int len; 243 244 len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d\n", 245 sdata->vif.hw_queue[IEEE80211_AC_VO], 246 sdata->vif.hw_queue[IEEE80211_AC_VI], 247 sdata->vif.hw_queue[IEEE80211_AC_BE], 248 sdata->vif.hw_queue[IEEE80211_AC_BK]); 249 250 if (sdata->vif.type == NL80211_IFTYPE_AP) 251 len += scnprintf(buf + len, buflen - len, "cab queue: %d\n", 252 sdata->vif.cab_queue); 253 254 return len; 255 } 256 IEEE80211_IF_FILE_R(hw_queues); 257 258 /* STA attributes */ 259 IEEE80211_IF_FILE(bssid, deflink.u.mgd.bssid, MAC); 260 IEEE80211_IF_FILE(aid, vif.cfg.aid, DEC); 261 IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS); 262 263 static int ieee80211_set_smps(struct ieee80211_link_data *link, 264 enum ieee80211_smps_mode smps_mode) 265 { 266 struct ieee80211_sub_if_data *sdata = link->sdata; 267 struct ieee80211_local *local = sdata->local; 268 int err; 269 270 if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) && 271 smps_mode == IEEE80211_SMPS_STATIC) 272 return -EINVAL; 273 274 /* auto should be dynamic if in PS mode */ 275 if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) && 276 (smps_mode == IEEE80211_SMPS_DYNAMIC || 277 smps_mode == IEEE80211_SMPS_AUTOMATIC)) 278 return -EINVAL; 279 280 if (sdata->vif.type != NL80211_IFTYPE_STATION) 281 return -EOPNOTSUPP; 282 283 sdata_lock(sdata); 284 err = __ieee80211_request_smps_mgd(link->sdata, link, smps_mode); 285 sdata_unlock(sdata); 286 287 return err; 288 } 289 290 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { 291 [IEEE80211_SMPS_AUTOMATIC] = "auto", 292 [IEEE80211_SMPS_OFF] = "off", 293 [IEEE80211_SMPS_STATIC] = "static", 294 [IEEE80211_SMPS_DYNAMIC] = "dynamic", 295 }; 296 297 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_link_data *link, 298 char *buf, int buflen) 299 { 300 if (link->sdata->vif.type == NL80211_IFTYPE_STATION) 301 return snprintf(buf, buflen, "request: %s\nused: %s\n", 302 smps_modes[link->u.mgd.req_smps], 303 smps_modes[link->smps_mode]); 304 return -EINVAL; 305 } 306 307 static ssize_t ieee80211_if_parse_smps(struct ieee80211_link_data *link, 308 const char *buf, int buflen) 309 { 310 enum ieee80211_smps_mode mode; 311 312 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) { 313 if (strncmp(buf, smps_modes[mode], buflen) == 0) { 314 int err = ieee80211_set_smps(link, mode); 315 if (!err) 316 return buflen; 317 return err; 318 } 319 } 320 321 return -EINVAL; 322 } 323 IEEE80211_IF_LINK_FILE_RW(smps); 324 325 static ssize_t ieee80211_if_parse_tkip_mic_test( 326 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 327 { 328 struct ieee80211_local *local = sdata->local; 329 u8 addr[ETH_ALEN]; 330 struct sk_buff *skb; 331 struct ieee80211_hdr *hdr; 332 __le16 fc; 333 334 if (!mac_pton(buf, addr)) 335 return -EINVAL; 336 337 if (!ieee80211_sdata_running(sdata)) 338 return -ENOTCONN; 339 340 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100); 341 if (!skb) 342 return -ENOMEM; 343 skb_reserve(skb, local->hw.extra_tx_headroom); 344 345 hdr = skb_put_zero(skb, 24); 346 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); 347 348 switch (sdata->vif.type) { 349 case NL80211_IFTYPE_AP: 350 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); 351 /* DA BSSID SA */ 352 memcpy(hdr->addr1, addr, ETH_ALEN); 353 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 354 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN); 355 break; 356 case NL80211_IFTYPE_STATION: 357 fc |= cpu_to_le16(IEEE80211_FCTL_TODS); 358 /* BSSID SA DA */ 359 sdata_lock(sdata); 360 if (!sdata->u.mgd.associated) { 361 sdata_unlock(sdata); 362 dev_kfree_skb(skb); 363 return -ENOTCONN; 364 } 365 memcpy(hdr->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN); 366 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 367 memcpy(hdr->addr3, addr, ETH_ALEN); 368 sdata_unlock(sdata); 369 break; 370 default: 371 dev_kfree_skb(skb); 372 return -EOPNOTSUPP; 373 } 374 hdr->frame_control = fc; 375 376 /* 377 * Add some length to the test frame to make it look bit more valid. 378 * The exact contents does not matter since the recipient is required 379 * to drop this because of the Michael MIC failure. 380 */ 381 skb_put_zero(skb, 50); 382 383 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE; 384 385 ieee80211_tx_skb(sdata, skb); 386 387 return buflen; 388 } 389 IEEE80211_IF_FILE_W(tkip_mic_test); 390 391 static ssize_t ieee80211_if_parse_beacon_loss( 392 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 393 { 394 if (!ieee80211_sdata_running(sdata) || !sdata->vif.cfg.assoc) 395 return -ENOTCONN; 396 397 ieee80211_beacon_loss(&sdata->vif); 398 399 return buflen; 400 } 401 IEEE80211_IF_FILE_W(beacon_loss); 402 403 static ssize_t ieee80211_if_fmt_uapsd_queues( 404 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 405 { 406 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 407 408 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues); 409 } 410 411 static ssize_t ieee80211_if_parse_uapsd_queues( 412 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 413 { 414 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 415 u8 val; 416 int ret; 417 418 ret = kstrtou8(buf, 0, &val); 419 if (ret) 420 return ret; 421 422 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 423 return -ERANGE; 424 425 ifmgd->uapsd_queues = val; 426 427 return buflen; 428 } 429 IEEE80211_IF_FILE_RW(uapsd_queues); 430 431 static ssize_t ieee80211_if_fmt_uapsd_max_sp_len( 432 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 433 { 434 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 435 436 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len); 437 } 438 439 static ssize_t ieee80211_if_parse_uapsd_max_sp_len( 440 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 441 { 442 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 443 unsigned long val; 444 int ret; 445 446 ret = kstrtoul(buf, 0, &val); 447 if (ret) 448 return -EINVAL; 449 450 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 451 return -ERANGE; 452 453 ifmgd->uapsd_max_sp_len = val; 454 455 return buflen; 456 } 457 IEEE80211_IF_FILE_RW(uapsd_max_sp_len); 458 459 static ssize_t ieee80211_if_fmt_tdls_wider_bw( 460 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 461 { 462 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 463 bool tdls_wider_bw; 464 465 tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) && 466 !ifmgd->tdls_wider_bw_prohibited; 467 468 return snprintf(buf, buflen, "%d\n", tdls_wider_bw); 469 } 470 471 static ssize_t ieee80211_if_parse_tdls_wider_bw( 472 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 473 { 474 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 475 u8 val; 476 int ret; 477 478 ret = kstrtou8(buf, 0, &val); 479 if (ret) 480 return ret; 481 482 ifmgd->tdls_wider_bw_prohibited = !val; 483 return buflen; 484 } 485 IEEE80211_IF_FILE_RW(tdls_wider_bw); 486 487 /* AP attributes */ 488 IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC); 489 IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC); 490 IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC); 491 IEEE80211_IF_FILE(num_mcast_sta_vlan, u.vlan.num_mcast_sta, ATOMIC); 492 493 static ssize_t ieee80211_if_fmt_num_buffered_multicast( 494 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 495 { 496 return scnprintf(buf, buflen, "%u\n", 497 skb_queue_len(&sdata->u.ap.ps.bc_buf)); 498 } 499 IEEE80211_IF_FILE_R(num_buffered_multicast); 500 501 static ssize_t ieee80211_if_fmt_aqm( 502 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 503 { 504 struct ieee80211_local *local = sdata->local; 505 struct txq_info *txqi; 506 int len; 507 508 if (!sdata->vif.txq) 509 return 0; 510 511 txqi = to_txq_info(sdata->vif.txq); 512 513 spin_lock_bh(&local->fq.lock); 514 rcu_read_lock(); 515 516 len = scnprintf(buf, 517 buflen, 518 "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n" 519 "%u %u %u %u %u %u %u %u %u %u\n", 520 txqi->txq.ac, 521 txqi->tin.backlog_bytes, 522 txqi->tin.backlog_packets, 523 txqi->tin.flows, 524 txqi->cstats.drop_count, 525 txqi->cstats.ecn_mark, 526 txqi->tin.overlimit, 527 txqi->tin.collisions, 528 txqi->tin.tx_bytes, 529 txqi->tin.tx_packets); 530 531 rcu_read_unlock(); 532 spin_unlock_bh(&local->fq.lock); 533 534 return len; 535 } 536 IEEE80211_IF_FILE_R(aqm); 537 538 IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX); 539 540 /* IBSS attributes */ 541 static ssize_t ieee80211_if_fmt_tsf( 542 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 543 { 544 struct ieee80211_local *local = sdata->local; 545 u64 tsf; 546 547 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata); 548 549 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf); 550 } 551 552 static ssize_t ieee80211_if_parse_tsf( 553 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 554 { 555 struct ieee80211_local *local = sdata->local; 556 unsigned long long tsf; 557 int ret; 558 int tsf_is_delta = 0; 559 560 if (strncmp(buf, "reset", 5) == 0) { 561 if (local->ops->reset_tsf) { 562 drv_reset_tsf(local, sdata); 563 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n"); 564 } 565 } else { 566 if (buflen > 10 && buf[1] == '=') { 567 if (buf[0] == '+') 568 tsf_is_delta = 1; 569 else if (buf[0] == '-') 570 tsf_is_delta = -1; 571 else 572 return -EINVAL; 573 buf += 2; 574 } 575 ret = kstrtoull(buf, 10, &tsf); 576 if (ret < 0) 577 return ret; 578 if (tsf_is_delta && local->ops->offset_tsf) { 579 drv_offset_tsf(local, sdata, tsf_is_delta * tsf); 580 wiphy_info(local->hw.wiphy, 581 "debugfs offset TSF by %018lld\n", 582 tsf_is_delta * tsf); 583 } else if (local->ops->set_tsf) { 584 if (tsf_is_delta) 585 tsf = drv_get_tsf(local, sdata) + 586 tsf_is_delta * tsf; 587 drv_set_tsf(local, sdata, tsf); 588 wiphy_info(local->hw.wiphy, 589 "debugfs set TSF to %#018llx\n", tsf); 590 } 591 } 592 593 ieee80211_recalc_dtim(local, sdata); 594 return buflen; 595 } 596 IEEE80211_IF_FILE_RW(tsf); 597 598 static ssize_t ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data *sdata, 599 char *buf, int buflen) 600 { 601 return snprintf(buf, buflen, "0x%x\n", sdata->vif.valid_links); 602 } 603 IEEE80211_IF_FILE_R(valid_links); 604 605 static ssize_t ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data *sdata, 606 char *buf, int buflen) 607 { 608 return snprintf(buf, buflen, "0x%x\n", sdata->vif.active_links); 609 } 610 611 static ssize_t ieee80211_if_parse_active_links(struct ieee80211_sub_if_data *sdata, 612 const char *buf, int buflen) 613 { 614 u16 active_links; 615 616 if (kstrtou16(buf, 0, &active_links)) 617 return -EINVAL; 618 619 return ieee80211_set_active_links(&sdata->vif, active_links) ?: buflen; 620 } 621 IEEE80211_IF_FILE_RW(active_links); 622 623 IEEE80211_IF_LINK_FILE(addr, conf->addr, MAC); 624 625 #ifdef CONFIG_MAC80211_MESH 626 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC); 627 628 /* Mesh stats attributes */ 629 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); 630 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); 631 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); 632 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); 633 IEEE80211_IF_FILE(dropped_frames_no_route, 634 u.mesh.mshstats.dropped_frames_no_route, DEC); 635 636 /* Mesh parameters */ 637 IEEE80211_IF_FILE(dot11MeshMaxRetries, 638 u.mesh.mshcfg.dot11MeshMaxRetries, DEC); 639 IEEE80211_IF_FILE(dot11MeshRetryTimeout, 640 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); 641 IEEE80211_IF_FILE(dot11MeshConfirmTimeout, 642 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); 643 IEEE80211_IF_FILE(dot11MeshHoldingTimeout, 644 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); 645 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); 646 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC); 647 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); 648 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, 649 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); 650 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, 651 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); 652 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, 653 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); 654 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval, 655 u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC); 656 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, 657 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); 658 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, 659 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); 660 IEEE80211_IF_FILE(path_refresh_time, 661 u.mesh.mshcfg.path_refresh_time, DEC); 662 IEEE80211_IF_FILE(min_discovery_timeout, 663 u.mesh.mshcfg.min_discovery_timeout, DEC); 664 IEEE80211_IF_FILE(dot11MeshHWMPRootMode, 665 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); 666 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, 667 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); 668 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, 669 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); 670 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); 671 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC); 672 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC); 673 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout, 674 u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC); 675 IEEE80211_IF_FILE(dot11MeshHWMProotInterval, 676 u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC); 677 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval, 678 u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC); 679 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC); 680 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration, 681 u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC); 682 IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate, 683 u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC); 684 IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC); 685 IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer, 686 u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC); 687 #endif 688 689 #define DEBUGFS_ADD_MODE(name, mode) \ 690 debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \ 691 sdata, &name##_ops) 692 693 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400) 694 695 static void add_common_files(struct ieee80211_sub_if_data *sdata) 696 { 697 DEBUGFS_ADD(rc_rateidx_mask_2ghz); 698 DEBUGFS_ADD(rc_rateidx_mask_5ghz); 699 DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); 700 DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); 701 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz); 702 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz); 703 DEBUGFS_ADD(hw_queues); 704 705 if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 706 sdata->vif.type != NL80211_IFTYPE_NAN) 707 DEBUGFS_ADD(aqm); 708 } 709 710 static void add_sta_files(struct ieee80211_sub_if_data *sdata) 711 { 712 DEBUGFS_ADD(bssid); 713 DEBUGFS_ADD(aid); 714 DEBUGFS_ADD(beacon_timeout); 715 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 716 DEBUGFS_ADD_MODE(beacon_loss, 0200); 717 DEBUGFS_ADD_MODE(uapsd_queues, 0600); 718 DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600); 719 DEBUGFS_ADD_MODE(tdls_wider_bw, 0600); 720 DEBUGFS_ADD_MODE(valid_links, 0200); 721 DEBUGFS_ADD_MODE(active_links, 0600); 722 } 723 724 static void add_ap_files(struct ieee80211_sub_if_data *sdata) 725 { 726 DEBUGFS_ADD(num_mcast_sta); 727 DEBUGFS_ADD(num_sta_ps); 728 DEBUGFS_ADD(dtim_count); 729 DEBUGFS_ADD(num_buffered_multicast); 730 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 731 DEBUGFS_ADD_MODE(multicast_to_unicast, 0600); 732 } 733 734 static void add_vlan_files(struct ieee80211_sub_if_data *sdata) 735 { 736 /* add num_mcast_sta_vlan using name num_mcast_sta */ 737 debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir, 738 sdata, &num_mcast_sta_vlan_ops); 739 } 740 741 static void add_ibss_files(struct ieee80211_sub_if_data *sdata) 742 { 743 DEBUGFS_ADD_MODE(tsf, 0600); 744 } 745 746 #ifdef CONFIG_MAC80211_MESH 747 748 static void add_mesh_files(struct ieee80211_sub_if_data *sdata) 749 { 750 DEBUGFS_ADD_MODE(tsf, 0600); 751 DEBUGFS_ADD_MODE(estab_plinks, 0400); 752 } 753 754 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) 755 { 756 struct dentry *dir = debugfs_create_dir("mesh_stats", 757 sdata->vif.debugfs_dir); 758 #define MESHSTATS_ADD(name)\ 759 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops) 760 761 MESHSTATS_ADD(fwded_mcast); 762 MESHSTATS_ADD(fwded_unicast); 763 MESHSTATS_ADD(fwded_frames); 764 MESHSTATS_ADD(dropped_frames_ttl); 765 MESHSTATS_ADD(dropped_frames_no_route); 766 #undef MESHSTATS_ADD 767 } 768 769 static void add_mesh_config(struct ieee80211_sub_if_data *sdata) 770 { 771 struct dentry *dir = debugfs_create_dir("mesh_config", 772 sdata->vif.debugfs_dir); 773 774 #define MESHPARAMS_ADD(name) \ 775 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops) 776 777 MESHPARAMS_ADD(dot11MeshMaxRetries); 778 MESHPARAMS_ADD(dot11MeshRetryTimeout); 779 MESHPARAMS_ADD(dot11MeshConfirmTimeout); 780 MESHPARAMS_ADD(dot11MeshHoldingTimeout); 781 MESHPARAMS_ADD(dot11MeshTTL); 782 MESHPARAMS_ADD(element_ttl); 783 MESHPARAMS_ADD(auto_open_plinks); 784 MESHPARAMS_ADD(dot11MeshMaxPeerLinks); 785 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); 786 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); 787 MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval); 788 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); 789 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); 790 MESHPARAMS_ADD(path_refresh_time); 791 MESHPARAMS_ADD(min_discovery_timeout); 792 MESHPARAMS_ADD(dot11MeshHWMPRootMode); 793 MESHPARAMS_ADD(dot11MeshHWMPRannInterval); 794 MESHPARAMS_ADD(dot11MeshForwarding); 795 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol); 796 MESHPARAMS_ADD(rssi_threshold); 797 MESHPARAMS_ADD(ht_opmode); 798 MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout); 799 MESHPARAMS_ADD(dot11MeshHWMProotInterval); 800 MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval); 801 MESHPARAMS_ADD(power_mode); 802 MESHPARAMS_ADD(dot11MeshAwakeWindowDuration); 803 MESHPARAMS_ADD(dot11MeshConnectedToMeshGate); 804 MESHPARAMS_ADD(dot11MeshNolearn); 805 MESHPARAMS_ADD(dot11MeshConnectedToAuthServer); 806 #undef MESHPARAMS_ADD 807 } 808 #endif 809 810 static void add_files(struct ieee80211_sub_if_data *sdata) 811 { 812 if (!sdata->vif.debugfs_dir) 813 return; 814 815 DEBUGFS_ADD(flags); 816 DEBUGFS_ADD(state); 817 818 if (sdata->vif.type != NL80211_IFTYPE_MONITOR) 819 add_common_files(sdata); 820 821 switch (sdata->vif.type) { 822 case NL80211_IFTYPE_MESH_POINT: 823 #ifdef CONFIG_MAC80211_MESH 824 add_mesh_files(sdata); 825 add_mesh_stats(sdata); 826 add_mesh_config(sdata); 827 #endif 828 break; 829 case NL80211_IFTYPE_STATION: 830 add_sta_files(sdata); 831 break; 832 case NL80211_IFTYPE_ADHOC: 833 add_ibss_files(sdata); 834 break; 835 case NL80211_IFTYPE_AP: 836 add_ap_files(sdata); 837 break; 838 case NL80211_IFTYPE_AP_VLAN: 839 add_vlan_files(sdata); 840 break; 841 default: 842 break; 843 } 844 } 845 846 #undef DEBUGFS_ADD_MODE 847 #undef DEBUGFS_ADD 848 849 #define DEBUGFS_ADD_MODE(dentry, name, mode) \ 850 debugfs_create_file(#name, mode, dentry, \ 851 link, &link_##name##_ops) 852 853 #define DEBUGFS_ADD(dentry, name) DEBUGFS_ADD_MODE(dentry, name, 0400) 854 855 static void add_link_files(struct ieee80211_link_data *link, 856 struct dentry *dentry) 857 { 858 DEBUGFS_ADD(dentry, txpower); 859 DEBUGFS_ADD(dentry, user_power_level); 860 DEBUGFS_ADD(dentry, ap_power_level); 861 862 switch (link->sdata->vif.type) { 863 case NL80211_IFTYPE_STATION: 864 DEBUGFS_ADD_MODE(dentry, smps, 0600); 865 break; 866 default: 867 break; 868 } 869 } 870 871 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata) 872 { 873 char buf[10+IFNAMSIZ]; 874 875 sprintf(buf, "netdev:%s", sdata->name); 876 sdata->vif.debugfs_dir = debugfs_create_dir(buf, 877 sdata->local->hw.wiphy->debugfsdir); 878 sdata->debugfs.subdir_stations = debugfs_create_dir("stations", 879 sdata->vif.debugfs_dir); 880 add_files(sdata); 881 882 if (!(sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 883 add_link_files(&sdata->deflink, sdata->vif.debugfs_dir); 884 } 885 886 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) 887 { 888 if (!sdata->vif.debugfs_dir) 889 return; 890 891 debugfs_remove_recursive(sdata->vif.debugfs_dir); 892 sdata->vif.debugfs_dir = NULL; 893 sdata->debugfs.subdir_stations = NULL; 894 } 895 896 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) 897 { 898 struct dentry *dir; 899 char buf[10 + IFNAMSIZ]; 900 901 dir = sdata->vif.debugfs_dir; 902 903 if (IS_ERR_OR_NULL(dir)) 904 return; 905 906 sprintf(buf, "netdev:%s", sdata->name); 907 debugfs_rename(dir->d_parent, dir, dir->d_parent, buf); 908 } 909 910 void ieee80211_link_debugfs_add(struct ieee80211_link_data *link) 911 { 912 char link_dir_name[10]; 913 914 if (WARN_ON(!link->sdata->vif.debugfs_dir)) 915 return; 916 917 /* For now, this should not be called for non-MLO capable drivers */ 918 if (WARN_ON(!(link->sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))) 919 return; 920 921 snprintf(link_dir_name, sizeof(link_dir_name), 922 "link-%d", link->link_id); 923 924 link->debugfs_dir = 925 debugfs_create_dir(link_dir_name, 926 link->sdata->vif.debugfs_dir); 927 928 DEBUGFS_ADD(link->debugfs_dir, addr); 929 add_link_files(link, link->debugfs_dir); 930 } 931 932 void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link) 933 { 934 if (!link->sdata->vif.debugfs_dir || !link->debugfs_dir) { 935 link->debugfs_dir = NULL; 936 return; 937 } 938 939 if (link->debugfs_dir == link->sdata->vif.debugfs_dir) { 940 WARN_ON(link != &link->sdata->deflink); 941 link->debugfs_dir = NULL; 942 return; 943 } 944 945 debugfs_remove_recursive(link->debugfs_dir); 946 link->debugfs_dir = NULL; 947 } 948 949 void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link) 950 { 951 if (WARN_ON(!link->debugfs_dir)) 952 return; 953 954 drv_link_add_debugfs(link->sdata->local, link->sdata, 955 link->conf, link->debugfs_dir); 956 } 957 958 void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link) 959 { 960 if (!link || !link->debugfs_dir) 961 return; 962 963 if (WARN_ON(link->debugfs_dir == link->sdata->vif.debugfs_dir)) 964 return; 965 966 /* Recreate the directory excluding the driver data */ 967 debugfs_remove_recursive(link->debugfs_dir); 968 link->debugfs_dir = NULL; 969 970 ieee80211_link_debugfs_add(link); 971 } 972