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 static ssize_t ieee80211_if_read_sdata( 26 struct ieee80211_sub_if_data *sdata, 27 char __user *userbuf, 28 size_t count, loff_t *ppos, 29 ssize_t (*format)(const struct ieee80211_sub_if_data *sdata, char *, int)) 30 { 31 char buf[200]; 32 ssize_t ret = -EINVAL; 33 34 wiphy_lock(sdata->local->hw.wiphy); 35 ret = (*format)(sdata, buf, sizeof(buf)); 36 wiphy_unlock(sdata->local->hw.wiphy); 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_sdata( 45 struct ieee80211_sub_if_data *sdata, 46 const char __user *userbuf, 47 size_t count, loff_t *ppos, 48 ssize_t (*write)(struct ieee80211_sub_if_data *sdata, 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 wiphy_lock(sdata->local->hw.wiphy); 61 ret = (*write)(sdata, buf, count); 62 wiphy_unlock(sdata->local->hw.wiphy); 63 64 return ret; 65 } 66 67 static ssize_t ieee80211_if_read_link( 68 struct ieee80211_link_data *link, 69 char __user *userbuf, 70 size_t count, loff_t *ppos, 71 ssize_t (*format)(const struct ieee80211_link_data *link, char *, int)) 72 { 73 char buf[200]; 74 ssize_t ret = -EINVAL; 75 76 wiphy_lock(link->sdata->local->hw.wiphy); 77 ret = (*format)(link, buf, sizeof(buf)); 78 wiphy_unlock(link->sdata->local->hw.wiphy); 79 80 if (ret >= 0) 81 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret); 82 83 return ret; 84 } 85 86 static ssize_t ieee80211_if_write_link( 87 struct ieee80211_link_data *link, 88 const char __user *userbuf, 89 size_t count, loff_t *ppos, 90 ssize_t (*write)(struct ieee80211_link_data *link, const char *, int)) 91 { 92 char buf[64]; 93 ssize_t ret; 94 95 if (count >= sizeof(buf)) 96 return -E2BIG; 97 98 if (copy_from_user(buf, userbuf, count)) 99 return -EFAULT; 100 buf[count] = '\0'; 101 102 wiphy_lock(link->sdata->local->hw.wiphy); 103 ret = (*write)(link, buf, count); 104 wiphy_unlock(link->sdata->local->hw.wiphy); 105 106 return ret; 107 } 108 109 #define IEEE80211_IF_FMT(name, type, field, format_string) \ 110 static ssize_t ieee80211_if_fmt_##name( \ 111 const type *data, char *buf, \ 112 int buflen) \ 113 { \ 114 return scnprintf(buf, buflen, format_string, data->field); \ 115 } 116 #define IEEE80211_IF_FMT_DEC(name, type, field) \ 117 IEEE80211_IF_FMT(name, type, field, "%d\n") 118 #define IEEE80211_IF_FMT_HEX(name, type, field) \ 119 IEEE80211_IF_FMT(name, type, field, "%#x\n") 120 #define IEEE80211_IF_FMT_LHEX(name, type, field) \ 121 IEEE80211_IF_FMT(name, type, field, "%#lx\n") 122 123 #define IEEE80211_IF_FMT_HEXARRAY(name, type, field) \ 124 static ssize_t ieee80211_if_fmt_##name( \ 125 const type *data, \ 126 char *buf, int buflen) \ 127 { \ 128 char *p = buf; \ 129 int i; \ 130 for (i = 0; i < sizeof(data->field); i++) { \ 131 p += scnprintf(p, buflen + buf - p, "%.2x ", \ 132 data->field[i]); \ 133 } \ 134 p += scnprintf(p, buflen + buf - p, "\n"); \ 135 return p - buf; \ 136 } 137 138 #define IEEE80211_IF_FMT_ATOMIC(name, type, field) \ 139 static ssize_t ieee80211_if_fmt_##name( \ 140 const type *data, \ 141 char *buf, int buflen) \ 142 { \ 143 return scnprintf(buf, buflen, "%d\n", atomic_read(&data->field));\ 144 } 145 146 #define IEEE80211_IF_FMT_MAC(name, type, field) \ 147 static ssize_t ieee80211_if_fmt_##name( \ 148 const type *data, char *buf, \ 149 int buflen) \ 150 { \ 151 return scnprintf(buf, buflen, "%pM\n", data->field); \ 152 } 153 154 #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, type, field) \ 155 static ssize_t ieee80211_if_fmt_##name( \ 156 const type *data, \ 157 char *buf, int buflen) \ 158 { \ 159 return scnprintf(buf, buflen, "%d\n", \ 160 jiffies_to_msecs(data->field)); \ 161 } 162 163 #define _IEEE80211_IF_FILE_OPS(name, _read, _write) \ 164 static const struct file_operations name##_ops = { \ 165 .read = (_read), \ 166 .write = (_write), \ 167 .open = simple_open, \ 168 .llseek = generic_file_llseek, \ 169 } 170 171 #define _IEEE80211_IF_FILE_R_FN(name) \ 172 static ssize_t ieee80211_if_read_##name(struct file *file, \ 173 char __user *userbuf, \ 174 size_t count, loff_t *ppos) \ 175 { \ 176 return ieee80211_if_read_sdata(file->private_data, \ 177 userbuf, count, ppos, \ 178 ieee80211_if_fmt_##name); \ 179 } 180 181 #define _IEEE80211_IF_FILE_W_FN(name) \ 182 static ssize_t ieee80211_if_write_##name(struct file *file, \ 183 const char __user *userbuf, \ 184 size_t count, loff_t *ppos) \ 185 { \ 186 return ieee80211_if_write_sdata(file->private_data, userbuf, \ 187 count, ppos, \ 188 ieee80211_if_parse_##name); \ 189 } 190 191 #define IEEE80211_IF_FILE_R(name) \ 192 _IEEE80211_IF_FILE_R_FN(name) \ 193 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL) 194 195 #define IEEE80211_IF_FILE_W(name) \ 196 _IEEE80211_IF_FILE_W_FN(name) \ 197 _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name) 198 199 #define IEEE80211_IF_FILE_RW(name) \ 200 _IEEE80211_IF_FILE_R_FN(name) \ 201 _IEEE80211_IF_FILE_W_FN(name) \ 202 _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, \ 203 ieee80211_if_write_##name) 204 205 #define IEEE80211_IF_FILE(name, field, format) \ 206 IEEE80211_IF_FMT_##format(name, struct ieee80211_sub_if_data, field) \ 207 IEEE80211_IF_FILE_R(name) 208 209 #define _IEEE80211_IF_LINK_R_FN(name) \ 210 static ssize_t ieee80211_if_read_##name(struct file *file, \ 211 char __user *userbuf, \ 212 size_t count, loff_t *ppos) \ 213 { \ 214 return ieee80211_if_read_link(file->private_data, \ 215 userbuf, count, ppos, \ 216 ieee80211_if_fmt_##name); \ 217 } 218 219 #define _IEEE80211_IF_LINK_W_FN(name) \ 220 static ssize_t ieee80211_if_write_##name(struct file *file, \ 221 const char __user *userbuf, \ 222 size_t count, loff_t *ppos) \ 223 { \ 224 return ieee80211_if_write_link(file->private_data, userbuf, \ 225 count, ppos, \ 226 ieee80211_if_parse_##name); \ 227 } 228 229 #define IEEE80211_IF_LINK_FILE_R(name) \ 230 _IEEE80211_IF_LINK_R_FN(name) \ 231 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, NULL) 232 233 #define IEEE80211_IF_LINK_FILE_W(name) \ 234 _IEEE80211_IF_LINK_W_FN(name) \ 235 _IEEE80211_IF_FILE_OPS(link_##name, NULL, ieee80211_if_write_##name) 236 237 #define IEEE80211_IF_LINK_FILE_RW(name) \ 238 _IEEE80211_IF_LINK_R_FN(name) \ 239 _IEEE80211_IF_LINK_W_FN(name) \ 240 _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, \ 241 ieee80211_if_write_##name) 242 243 #define IEEE80211_IF_LINK_FILE(name, field, format) \ 244 IEEE80211_IF_FMT_##format(name, struct ieee80211_link_data, field) \ 245 IEEE80211_IF_LINK_FILE_R(name) 246 247 /* common attributes */ 248 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[NL80211_BAND_2GHZ], 249 HEX); 250 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[NL80211_BAND_5GHZ], 251 HEX); 252 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz, 253 rc_rateidx_mcs_mask[NL80211_BAND_2GHZ], HEXARRAY); 254 IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz, 255 rc_rateidx_mcs_mask[NL80211_BAND_5GHZ], HEXARRAY); 256 257 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz( 258 const struct ieee80211_sub_if_data *sdata, 259 char *buf, int buflen) 260 { 261 int i, len = 0; 262 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_2GHZ]; 263 264 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 265 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); 266 len += scnprintf(buf + len, buflen - len, "\n"); 267 268 return len; 269 } 270 271 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz); 272 273 static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz( 274 const struct ieee80211_sub_if_data *sdata, 275 char *buf, int buflen) 276 { 277 int i, len = 0; 278 const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_5GHZ]; 279 280 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 281 len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); 282 len += scnprintf(buf + len, buflen - len, "\n"); 283 284 return len; 285 } 286 287 IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz); 288 289 IEEE80211_IF_FILE(flags, flags, HEX); 290 IEEE80211_IF_FILE(state, state, LHEX); 291 IEEE80211_IF_LINK_FILE(txpower, conf->txpower, DEC); 292 IEEE80211_IF_LINK_FILE(ap_power_level, ap_power_level, DEC); 293 IEEE80211_IF_LINK_FILE(user_power_level, user_power_level, DEC); 294 295 static ssize_t 296 ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata, 297 char *buf, int buflen) 298 { 299 int len; 300 301 len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d\n", 302 sdata->vif.hw_queue[IEEE80211_AC_VO], 303 sdata->vif.hw_queue[IEEE80211_AC_VI], 304 sdata->vif.hw_queue[IEEE80211_AC_BE], 305 sdata->vif.hw_queue[IEEE80211_AC_BK]); 306 307 if (sdata->vif.type == NL80211_IFTYPE_AP) 308 len += scnprintf(buf + len, buflen - len, "cab queue: %d\n", 309 sdata->vif.cab_queue); 310 311 return len; 312 } 313 IEEE80211_IF_FILE_R(hw_queues); 314 315 /* STA attributes */ 316 IEEE80211_IF_FILE(bssid, deflink.u.mgd.bssid, MAC); 317 IEEE80211_IF_FILE(aid, vif.cfg.aid, DEC); 318 IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS); 319 320 static int ieee80211_set_smps(struct ieee80211_link_data *link, 321 enum ieee80211_smps_mode smps_mode) 322 { 323 struct ieee80211_sub_if_data *sdata = link->sdata; 324 struct ieee80211_local *local = sdata->local; 325 326 /* The driver indicated that EML is enabled for the interface, thus do 327 * not allow to override the SMPS state. 328 */ 329 if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE) 330 return -EOPNOTSUPP; 331 332 if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) && 333 smps_mode == IEEE80211_SMPS_STATIC) 334 return -EINVAL; 335 336 /* auto should be dynamic if in PS mode */ 337 if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) && 338 (smps_mode == IEEE80211_SMPS_DYNAMIC || 339 smps_mode == IEEE80211_SMPS_AUTOMATIC)) 340 return -EINVAL; 341 342 if (sdata->vif.type != NL80211_IFTYPE_STATION) 343 return -EOPNOTSUPP; 344 345 return __ieee80211_request_smps_mgd(link->sdata, link, smps_mode); 346 } 347 348 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { 349 [IEEE80211_SMPS_AUTOMATIC] = "auto", 350 [IEEE80211_SMPS_OFF] = "off", 351 [IEEE80211_SMPS_STATIC] = "static", 352 [IEEE80211_SMPS_DYNAMIC] = "dynamic", 353 }; 354 355 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_link_data *link, 356 char *buf, int buflen) 357 { 358 if (link->sdata->vif.type == NL80211_IFTYPE_STATION) 359 return snprintf(buf, buflen, "request: %s\nused: %s\n", 360 smps_modes[link->u.mgd.req_smps], 361 smps_modes[link->smps_mode]); 362 return -EINVAL; 363 } 364 365 static ssize_t ieee80211_if_parse_smps(struct ieee80211_link_data *link, 366 const char *buf, int buflen) 367 { 368 enum ieee80211_smps_mode mode; 369 370 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) { 371 if (strncmp(buf, smps_modes[mode], buflen) == 0) { 372 int err = ieee80211_set_smps(link, mode); 373 if (!err) 374 return buflen; 375 return err; 376 } 377 } 378 379 return -EINVAL; 380 } 381 IEEE80211_IF_LINK_FILE_RW(smps); 382 383 static ssize_t ieee80211_if_parse_tkip_mic_test( 384 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 385 { 386 struct ieee80211_local *local = sdata->local; 387 u8 addr[ETH_ALEN]; 388 struct sk_buff *skb; 389 struct ieee80211_hdr *hdr; 390 __le16 fc; 391 392 if (!mac_pton(buf, addr)) 393 return -EINVAL; 394 395 if (!ieee80211_sdata_running(sdata)) 396 return -ENOTCONN; 397 398 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100); 399 if (!skb) 400 return -ENOMEM; 401 skb_reserve(skb, local->hw.extra_tx_headroom); 402 403 hdr = skb_put_zero(skb, 24); 404 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); 405 406 switch (sdata->vif.type) { 407 case NL80211_IFTYPE_AP: 408 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); 409 /* DA BSSID SA */ 410 memcpy(hdr->addr1, addr, ETH_ALEN); 411 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 412 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN); 413 break; 414 case NL80211_IFTYPE_STATION: 415 fc |= cpu_to_le16(IEEE80211_FCTL_TODS); 416 /* BSSID SA DA */ 417 if (!sdata->u.mgd.associated) { 418 dev_kfree_skb(skb); 419 return -ENOTCONN; 420 } 421 memcpy(hdr->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN); 422 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 423 memcpy(hdr->addr3, addr, ETH_ALEN); 424 break; 425 default: 426 dev_kfree_skb(skb); 427 return -EOPNOTSUPP; 428 } 429 hdr->frame_control = fc; 430 431 /* 432 * Add some length to the test frame to make it look bit more valid. 433 * The exact contents does not matter since the recipient is required 434 * to drop this because of the Michael MIC failure. 435 */ 436 skb_put_zero(skb, 50); 437 438 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE; 439 440 ieee80211_tx_skb(sdata, skb); 441 442 return buflen; 443 } 444 IEEE80211_IF_FILE_W(tkip_mic_test); 445 446 static ssize_t ieee80211_if_parse_beacon_loss( 447 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 448 { 449 if (!ieee80211_sdata_running(sdata) || !sdata->vif.cfg.assoc) 450 return -ENOTCONN; 451 452 ieee80211_beacon_loss(&sdata->vif); 453 454 return buflen; 455 } 456 IEEE80211_IF_FILE_W(beacon_loss); 457 458 static ssize_t ieee80211_if_fmt_uapsd_queues( 459 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 460 { 461 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 462 463 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues); 464 } 465 466 static ssize_t ieee80211_if_parse_uapsd_queues( 467 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 468 { 469 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 470 u8 val; 471 int ret; 472 473 ret = kstrtou8(buf, 0, &val); 474 if (ret) 475 return ret; 476 477 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 478 return -ERANGE; 479 480 ifmgd->uapsd_queues = val; 481 482 return buflen; 483 } 484 IEEE80211_IF_FILE_RW(uapsd_queues); 485 486 static ssize_t ieee80211_if_fmt_uapsd_max_sp_len( 487 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 488 { 489 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 490 491 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len); 492 } 493 494 static ssize_t ieee80211_if_parse_uapsd_max_sp_len( 495 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 496 { 497 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 498 unsigned long val; 499 int ret; 500 501 ret = kstrtoul(buf, 0, &val); 502 if (ret) 503 return -EINVAL; 504 505 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 506 return -ERANGE; 507 508 ifmgd->uapsd_max_sp_len = val; 509 510 return buflen; 511 } 512 IEEE80211_IF_FILE_RW(uapsd_max_sp_len); 513 514 static ssize_t ieee80211_if_fmt_tdls_wider_bw( 515 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 516 { 517 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 518 bool tdls_wider_bw; 519 520 tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) && 521 !ifmgd->tdls_wider_bw_prohibited; 522 523 return snprintf(buf, buflen, "%d\n", tdls_wider_bw); 524 } 525 526 static ssize_t ieee80211_if_parse_tdls_wider_bw( 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 ifmgd->tdls_wider_bw_prohibited = !val; 538 return buflen; 539 } 540 IEEE80211_IF_FILE_RW(tdls_wider_bw); 541 542 /* AP attributes */ 543 IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC); 544 IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC); 545 IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC); 546 IEEE80211_IF_FILE(num_mcast_sta_vlan, u.vlan.num_mcast_sta, ATOMIC); 547 548 static ssize_t ieee80211_if_fmt_num_buffered_multicast( 549 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 550 { 551 return scnprintf(buf, buflen, "%u\n", 552 skb_queue_len(&sdata->u.ap.ps.bc_buf)); 553 } 554 IEEE80211_IF_FILE_R(num_buffered_multicast); 555 556 static ssize_t ieee80211_if_fmt_aqm( 557 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 558 { 559 struct ieee80211_local *local = sdata->local; 560 struct txq_info *txqi; 561 int len; 562 563 if (!sdata->vif.txq) 564 return 0; 565 566 txqi = to_txq_info(sdata->vif.txq); 567 568 spin_lock_bh(&local->fq.lock); 569 rcu_read_lock(); 570 571 len = scnprintf(buf, 572 buflen, 573 "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n" 574 "%u %u %u %u %u %u %u %u %u %u\n", 575 txqi->txq.ac, 576 txqi->tin.backlog_bytes, 577 txqi->tin.backlog_packets, 578 txqi->tin.flows, 579 txqi->cstats.drop_count, 580 txqi->cstats.ecn_mark, 581 txqi->tin.overlimit, 582 txqi->tin.collisions, 583 txqi->tin.tx_bytes, 584 txqi->tin.tx_packets); 585 586 rcu_read_unlock(); 587 spin_unlock_bh(&local->fq.lock); 588 589 return len; 590 } 591 IEEE80211_IF_FILE_R(aqm); 592 593 IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX); 594 595 /* IBSS attributes */ 596 static ssize_t ieee80211_if_fmt_tsf( 597 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 598 { 599 struct ieee80211_local *local = sdata->local; 600 u64 tsf; 601 602 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata); 603 604 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf); 605 } 606 607 static ssize_t ieee80211_if_parse_tsf( 608 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 609 { 610 struct ieee80211_local *local = sdata->local; 611 unsigned long long tsf; 612 int ret; 613 int tsf_is_delta = 0; 614 615 if (strncmp(buf, "reset", 5) == 0) { 616 if (local->ops->reset_tsf) { 617 drv_reset_tsf(local, sdata); 618 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n"); 619 } 620 } else { 621 if (buflen > 10 && buf[1] == '=') { 622 if (buf[0] == '+') 623 tsf_is_delta = 1; 624 else if (buf[0] == '-') 625 tsf_is_delta = -1; 626 else 627 return -EINVAL; 628 buf += 2; 629 } 630 ret = kstrtoull(buf, 10, &tsf); 631 if (ret < 0) 632 return ret; 633 if (tsf_is_delta && local->ops->offset_tsf) { 634 drv_offset_tsf(local, sdata, tsf_is_delta * tsf); 635 wiphy_info(local->hw.wiphy, 636 "debugfs offset TSF by %018lld\n", 637 tsf_is_delta * tsf); 638 } else if (local->ops->set_tsf) { 639 if (tsf_is_delta) 640 tsf = drv_get_tsf(local, sdata) + 641 tsf_is_delta * tsf; 642 drv_set_tsf(local, sdata, tsf); 643 wiphy_info(local->hw.wiphy, 644 "debugfs set TSF to %#018llx\n", tsf); 645 } 646 } 647 648 ieee80211_recalc_dtim(local, sdata); 649 return buflen; 650 } 651 IEEE80211_IF_FILE_RW(tsf); 652 653 static ssize_t ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data *sdata, 654 char *buf, int buflen) 655 { 656 return snprintf(buf, buflen, "0x%x\n", sdata->vif.valid_links); 657 } 658 IEEE80211_IF_FILE_R(valid_links); 659 660 static ssize_t ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data *sdata, 661 char *buf, int buflen) 662 { 663 return snprintf(buf, buflen, "0x%x\n", sdata->vif.active_links); 664 } 665 666 static ssize_t ieee80211_if_parse_active_links(struct ieee80211_sub_if_data *sdata, 667 const char *buf, int buflen) 668 { 669 u16 active_links; 670 671 if (kstrtou16(buf, 0, &active_links)) 672 return -EINVAL; 673 674 return ieee80211_set_active_links(&sdata->vif, active_links) ?: buflen; 675 } 676 IEEE80211_IF_FILE_RW(active_links); 677 678 IEEE80211_IF_LINK_FILE(addr, conf->addr, MAC); 679 680 #ifdef CONFIG_MAC80211_MESH 681 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC); 682 683 /* Mesh stats attributes */ 684 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); 685 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); 686 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); 687 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); 688 IEEE80211_IF_FILE(dropped_frames_no_route, 689 u.mesh.mshstats.dropped_frames_no_route, DEC); 690 691 /* Mesh parameters */ 692 IEEE80211_IF_FILE(dot11MeshMaxRetries, 693 u.mesh.mshcfg.dot11MeshMaxRetries, DEC); 694 IEEE80211_IF_FILE(dot11MeshRetryTimeout, 695 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); 696 IEEE80211_IF_FILE(dot11MeshConfirmTimeout, 697 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); 698 IEEE80211_IF_FILE(dot11MeshHoldingTimeout, 699 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); 700 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); 701 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC); 702 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); 703 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, 704 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); 705 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, 706 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); 707 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, 708 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); 709 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval, 710 u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC); 711 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, 712 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); 713 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, 714 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); 715 IEEE80211_IF_FILE(path_refresh_time, 716 u.mesh.mshcfg.path_refresh_time, DEC); 717 IEEE80211_IF_FILE(min_discovery_timeout, 718 u.mesh.mshcfg.min_discovery_timeout, DEC); 719 IEEE80211_IF_FILE(dot11MeshHWMPRootMode, 720 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); 721 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, 722 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); 723 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, 724 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); 725 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); 726 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC); 727 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC); 728 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout, 729 u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC); 730 IEEE80211_IF_FILE(dot11MeshHWMProotInterval, 731 u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC); 732 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval, 733 u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC); 734 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC); 735 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration, 736 u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC); 737 IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate, 738 u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC); 739 IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC); 740 IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer, 741 u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC); 742 #endif 743 744 #define DEBUGFS_ADD_MODE(name, mode) \ 745 debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \ 746 sdata, &name##_ops) 747 748 #define DEBUGFS_ADD_X(_bits, _name, _mode) \ 749 debugfs_create_x##_bits(#_name, _mode, sdata->vif.debugfs_dir, \ 750 &sdata->vif._name) 751 752 #define DEBUGFS_ADD_X8(_name, _mode) \ 753 DEBUGFS_ADD_X(8, _name, _mode) 754 755 #define DEBUGFS_ADD_X16(_name, _mode) \ 756 DEBUGFS_ADD_X(16, _name, _mode) 757 758 #define DEBUGFS_ADD_X32(_name, _mode) \ 759 DEBUGFS_ADD_X(32, _name, _mode) 760 761 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400) 762 763 static void add_common_files(struct ieee80211_sub_if_data *sdata) 764 { 765 DEBUGFS_ADD(rc_rateidx_mask_2ghz); 766 DEBUGFS_ADD(rc_rateidx_mask_5ghz); 767 DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); 768 DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); 769 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz); 770 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz); 771 DEBUGFS_ADD(hw_queues); 772 773 if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 774 sdata->vif.type != NL80211_IFTYPE_NAN) 775 DEBUGFS_ADD(aqm); 776 } 777 778 static void add_sta_files(struct ieee80211_sub_if_data *sdata) 779 { 780 DEBUGFS_ADD(bssid); 781 DEBUGFS_ADD(aid); 782 DEBUGFS_ADD(beacon_timeout); 783 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 784 DEBUGFS_ADD_MODE(beacon_loss, 0200); 785 DEBUGFS_ADD_MODE(uapsd_queues, 0600); 786 DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600); 787 DEBUGFS_ADD_MODE(tdls_wider_bw, 0600); 788 DEBUGFS_ADD_MODE(valid_links, 0400); 789 DEBUGFS_ADD_MODE(active_links, 0600); 790 DEBUGFS_ADD_X16(dormant_links, 0400); 791 } 792 793 static void add_ap_files(struct ieee80211_sub_if_data *sdata) 794 { 795 DEBUGFS_ADD(num_mcast_sta); 796 DEBUGFS_ADD(num_sta_ps); 797 DEBUGFS_ADD(dtim_count); 798 DEBUGFS_ADD(num_buffered_multicast); 799 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 800 DEBUGFS_ADD_MODE(multicast_to_unicast, 0600); 801 } 802 803 static void add_vlan_files(struct ieee80211_sub_if_data *sdata) 804 { 805 /* add num_mcast_sta_vlan using name num_mcast_sta */ 806 debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir, 807 sdata, &num_mcast_sta_vlan_ops); 808 } 809 810 static void add_ibss_files(struct ieee80211_sub_if_data *sdata) 811 { 812 DEBUGFS_ADD_MODE(tsf, 0600); 813 } 814 815 #ifdef CONFIG_MAC80211_MESH 816 817 static void add_mesh_files(struct ieee80211_sub_if_data *sdata) 818 { 819 DEBUGFS_ADD_MODE(tsf, 0600); 820 DEBUGFS_ADD_MODE(estab_plinks, 0400); 821 } 822 823 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) 824 { 825 struct dentry *dir = debugfs_create_dir("mesh_stats", 826 sdata->vif.debugfs_dir); 827 #define MESHSTATS_ADD(name)\ 828 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops) 829 830 MESHSTATS_ADD(fwded_mcast); 831 MESHSTATS_ADD(fwded_unicast); 832 MESHSTATS_ADD(fwded_frames); 833 MESHSTATS_ADD(dropped_frames_ttl); 834 MESHSTATS_ADD(dropped_frames_no_route); 835 #undef MESHSTATS_ADD 836 } 837 838 static void add_mesh_config(struct ieee80211_sub_if_data *sdata) 839 { 840 struct dentry *dir = debugfs_create_dir("mesh_config", 841 sdata->vif.debugfs_dir); 842 843 #define MESHPARAMS_ADD(name) \ 844 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops) 845 846 MESHPARAMS_ADD(dot11MeshMaxRetries); 847 MESHPARAMS_ADD(dot11MeshRetryTimeout); 848 MESHPARAMS_ADD(dot11MeshConfirmTimeout); 849 MESHPARAMS_ADD(dot11MeshHoldingTimeout); 850 MESHPARAMS_ADD(dot11MeshTTL); 851 MESHPARAMS_ADD(element_ttl); 852 MESHPARAMS_ADD(auto_open_plinks); 853 MESHPARAMS_ADD(dot11MeshMaxPeerLinks); 854 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); 855 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); 856 MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval); 857 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); 858 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); 859 MESHPARAMS_ADD(path_refresh_time); 860 MESHPARAMS_ADD(min_discovery_timeout); 861 MESHPARAMS_ADD(dot11MeshHWMPRootMode); 862 MESHPARAMS_ADD(dot11MeshHWMPRannInterval); 863 MESHPARAMS_ADD(dot11MeshForwarding); 864 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol); 865 MESHPARAMS_ADD(rssi_threshold); 866 MESHPARAMS_ADD(ht_opmode); 867 MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout); 868 MESHPARAMS_ADD(dot11MeshHWMProotInterval); 869 MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval); 870 MESHPARAMS_ADD(power_mode); 871 MESHPARAMS_ADD(dot11MeshAwakeWindowDuration); 872 MESHPARAMS_ADD(dot11MeshConnectedToMeshGate); 873 MESHPARAMS_ADD(dot11MeshNolearn); 874 MESHPARAMS_ADD(dot11MeshConnectedToAuthServer); 875 #undef MESHPARAMS_ADD 876 } 877 #endif 878 879 static void add_files(struct ieee80211_sub_if_data *sdata) 880 { 881 if (!sdata->vif.debugfs_dir) 882 return; 883 884 DEBUGFS_ADD(flags); 885 DEBUGFS_ADD(state); 886 887 if (sdata->vif.type != NL80211_IFTYPE_MONITOR) 888 add_common_files(sdata); 889 890 switch (sdata->vif.type) { 891 case NL80211_IFTYPE_MESH_POINT: 892 #ifdef CONFIG_MAC80211_MESH 893 add_mesh_files(sdata); 894 add_mesh_stats(sdata); 895 add_mesh_config(sdata); 896 #endif 897 break; 898 case NL80211_IFTYPE_STATION: 899 add_sta_files(sdata); 900 break; 901 case NL80211_IFTYPE_ADHOC: 902 add_ibss_files(sdata); 903 break; 904 case NL80211_IFTYPE_AP: 905 add_ap_files(sdata); 906 break; 907 case NL80211_IFTYPE_AP_VLAN: 908 add_vlan_files(sdata); 909 break; 910 default: 911 break; 912 } 913 } 914 915 #undef DEBUGFS_ADD_MODE 916 #undef DEBUGFS_ADD 917 918 #define DEBUGFS_ADD_MODE(dentry, name, mode) \ 919 debugfs_create_file(#name, mode, dentry, \ 920 link, &link_##name##_ops) 921 922 #define DEBUGFS_ADD(dentry, name) DEBUGFS_ADD_MODE(dentry, name, 0400) 923 924 static void add_link_files(struct ieee80211_link_data *link, 925 struct dentry *dentry) 926 { 927 DEBUGFS_ADD(dentry, txpower); 928 DEBUGFS_ADD(dentry, user_power_level); 929 DEBUGFS_ADD(dentry, ap_power_level); 930 931 switch (link->sdata->vif.type) { 932 case NL80211_IFTYPE_STATION: 933 DEBUGFS_ADD_MODE(dentry, smps, 0600); 934 break; 935 default: 936 break; 937 } 938 } 939 940 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata, 941 bool mld_vif) 942 { 943 char buf[10+IFNAMSIZ]; 944 945 sprintf(buf, "netdev:%s", sdata->name); 946 sdata->vif.debugfs_dir = debugfs_create_dir(buf, 947 sdata->local->hw.wiphy->debugfsdir); 948 /* deflink also has this */ 949 sdata->deflink.debugfs_dir = sdata->vif.debugfs_dir; 950 sdata->debugfs.subdir_stations = debugfs_create_dir("stations", 951 sdata->vif.debugfs_dir); 952 add_files(sdata); 953 if (!mld_vif) 954 add_link_files(&sdata->deflink, sdata->vif.debugfs_dir); 955 } 956 957 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) 958 { 959 if (!sdata->vif.debugfs_dir) 960 return; 961 962 debugfs_remove_recursive(sdata->vif.debugfs_dir); 963 sdata->vif.debugfs_dir = NULL; 964 sdata->debugfs.subdir_stations = NULL; 965 } 966 967 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) 968 { 969 struct dentry *dir; 970 char buf[10 + IFNAMSIZ]; 971 972 dir = sdata->vif.debugfs_dir; 973 974 if (IS_ERR_OR_NULL(dir)) 975 return; 976 977 sprintf(buf, "netdev:%s", sdata->name); 978 debugfs_rename(dir->d_parent, dir, dir->d_parent, buf); 979 } 980 981 void ieee80211_debugfs_recreate_netdev(struct ieee80211_sub_if_data *sdata, 982 bool mld_vif) 983 { 984 ieee80211_debugfs_remove_netdev(sdata); 985 ieee80211_debugfs_add_netdev(sdata, mld_vif); 986 drv_vif_add_debugfs(sdata->local, sdata); 987 if (!mld_vif) 988 ieee80211_link_debugfs_drv_add(&sdata->deflink); 989 } 990 991 void ieee80211_link_debugfs_add(struct ieee80211_link_data *link) 992 { 993 char link_dir_name[10]; 994 995 if (WARN_ON(!link->sdata->vif.debugfs_dir || link->debugfs_dir)) 996 return; 997 998 /* For now, this should not be called for non-MLO capable drivers */ 999 if (WARN_ON(!(link->sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))) 1000 return; 1001 1002 snprintf(link_dir_name, sizeof(link_dir_name), 1003 "link-%d", link->link_id); 1004 1005 link->debugfs_dir = 1006 debugfs_create_dir(link_dir_name, 1007 link->sdata->vif.debugfs_dir); 1008 1009 DEBUGFS_ADD(link->debugfs_dir, addr); 1010 add_link_files(link, link->debugfs_dir); 1011 } 1012 1013 void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link) 1014 { 1015 if (!link->sdata->vif.debugfs_dir || !link->debugfs_dir) { 1016 link->debugfs_dir = NULL; 1017 return; 1018 } 1019 1020 if (link->debugfs_dir == link->sdata->vif.debugfs_dir) { 1021 WARN_ON(link != &link->sdata->deflink); 1022 link->debugfs_dir = NULL; 1023 return; 1024 } 1025 1026 debugfs_remove_recursive(link->debugfs_dir); 1027 link->debugfs_dir = NULL; 1028 } 1029 1030 void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link) 1031 { 1032 if (link->sdata->vif.type == NL80211_IFTYPE_MONITOR || 1033 WARN_ON(!link->debugfs_dir)) 1034 return; 1035 1036 drv_link_add_debugfs(link->sdata->local, link->sdata, 1037 link->conf, link->debugfs_dir); 1038 } 1039 1040 void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link) 1041 { 1042 if (!link || !link->debugfs_dir) 1043 return; 1044 1045 if (WARN_ON(link->debugfs_dir == link->sdata->vif.debugfs_dir)) 1046 return; 1047 1048 /* Recreate the directory excluding the driver data */ 1049 debugfs_remove_recursive(link->debugfs_dir); 1050 link->debugfs_dir = NULL; 1051 1052 ieee80211_link_debugfs_add(link); 1053 } 1054