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 ieee80211_if_read(void * data,char __user * userbuf,size_t count,loff_t * ppos,ssize_t (* format)(const void *,char *,int))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 ieee80211_if_write(void * data,const char __user * userbuf,size_t count,loff_t * ppos,ssize_t (* write)(void *,const char *,int))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 ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)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 ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)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 ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)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 ieee80211_set_smps(struct ieee80211_link_data * link,enum ieee80211_smps_mode smps_mode)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 (sdata->vif.driver_flags & IEEE80211_VIF_DISABLE_SMPS_OVERRIDE) 271 return -EOPNOTSUPP; 272 273 if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) && 274 smps_mode == IEEE80211_SMPS_STATIC) 275 return -EINVAL; 276 277 /* auto should be dynamic if in PS mode */ 278 if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) && 279 (smps_mode == IEEE80211_SMPS_DYNAMIC || 280 smps_mode == IEEE80211_SMPS_AUTOMATIC)) 281 return -EINVAL; 282 283 if (sdata->vif.type != NL80211_IFTYPE_STATION) 284 return -EOPNOTSUPP; 285 286 sdata_lock(sdata); 287 err = __ieee80211_request_smps_mgd(link->sdata, link, smps_mode); 288 sdata_unlock(sdata); 289 290 return err; 291 } 292 293 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { 294 [IEEE80211_SMPS_AUTOMATIC] = "auto", 295 [IEEE80211_SMPS_OFF] = "off", 296 [IEEE80211_SMPS_STATIC] = "static", 297 [IEEE80211_SMPS_DYNAMIC] = "dynamic", 298 }; 299 ieee80211_if_fmt_smps(const struct ieee80211_link_data * link,char * buf,int buflen)300 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_link_data *link, 301 char *buf, int buflen) 302 { 303 if (link->sdata->vif.type == NL80211_IFTYPE_STATION) 304 return snprintf(buf, buflen, "request: %s\nused: %s\n", 305 smps_modes[link->u.mgd.req_smps], 306 smps_modes[link->smps_mode]); 307 return -EINVAL; 308 } 309 ieee80211_if_parse_smps(struct ieee80211_link_data * link,const char * buf,int buflen)310 static ssize_t ieee80211_if_parse_smps(struct ieee80211_link_data *link, 311 const char *buf, int buflen) 312 { 313 enum ieee80211_smps_mode mode; 314 315 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) { 316 if (strncmp(buf, smps_modes[mode], buflen) == 0) { 317 int err = ieee80211_set_smps(link, mode); 318 if (!err) 319 return buflen; 320 return err; 321 } 322 } 323 324 return -EINVAL; 325 } 326 IEEE80211_IF_LINK_FILE_RW(smps); 327 ieee80211_if_parse_tkip_mic_test(struct ieee80211_sub_if_data * sdata,const char * buf,int buflen)328 static ssize_t ieee80211_if_parse_tkip_mic_test( 329 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 330 { 331 struct ieee80211_local *local = sdata->local; 332 u8 addr[ETH_ALEN]; 333 struct sk_buff *skb; 334 struct ieee80211_hdr *hdr; 335 __le16 fc; 336 337 if (!mac_pton(buf, addr)) 338 return -EINVAL; 339 340 if (!ieee80211_sdata_running(sdata)) 341 return -ENOTCONN; 342 343 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100); 344 if (!skb) 345 return -ENOMEM; 346 skb_reserve(skb, local->hw.extra_tx_headroom); 347 348 hdr = skb_put_zero(skb, 24); 349 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); 350 351 switch (sdata->vif.type) { 352 case NL80211_IFTYPE_AP: 353 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); 354 /* DA BSSID SA */ 355 memcpy(hdr->addr1, addr, ETH_ALEN); 356 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 357 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN); 358 break; 359 case NL80211_IFTYPE_STATION: 360 fc |= cpu_to_le16(IEEE80211_FCTL_TODS); 361 /* BSSID SA DA */ 362 sdata_lock(sdata); 363 if (!sdata->u.mgd.associated) { 364 sdata_unlock(sdata); 365 dev_kfree_skb(skb); 366 return -ENOTCONN; 367 } 368 memcpy(hdr->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN); 369 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); 370 memcpy(hdr->addr3, addr, ETH_ALEN); 371 sdata_unlock(sdata); 372 break; 373 default: 374 dev_kfree_skb(skb); 375 return -EOPNOTSUPP; 376 } 377 hdr->frame_control = fc; 378 379 /* 380 * Add some length to the test frame to make it look bit more valid. 381 * The exact contents does not matter since the recipient is required 382 * to drop this because of the Michael MIC failure. 383 */ 384 skb_put_zero(skb, 50); 385 386 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE; 387 388 ieee80211_tx_skb(sdata, skb); 389 390 return buflen; 391 } 392 IEEE80211_IF_FILE_W(tkip_mic_test); 393 ieee80211_if_parse_beacon_loss(struct ieee80211_sub_if_data * sdata,const char * buf,int buflen)394 static ssize_t ieee80211_if_parse_beacon_loss( 395 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 396 { 397 if (!ieee80211_sdata_running(sdata) || !sdata->vif.cfg.assoc) 398 return -ENOTCONN; 399 400 ieee80211_beacon_loss(&sdata->vif); 401 402 return buflen; 403 } 404 IEEE80211_IF_FILE_W(beacon_loss); 405 ieee80211_if_fmt_uapsd_queues(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)406 static ssize_t ieee80211_if_fmt_uapsd_queues( 407 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 408 { 409 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 410 411 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues); 412 } 413 ieee80211_if_parse_uapsd_queues(struct ieee80211_sub_if_data * sdata,const char * buf,int buflen)414 static ssize_t ieee80211_if_parse_uapsd_queues( 415 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 416 { 417 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 418 u8 val; 419 int ret; 420 421 ret = kstrtou8(buf, 0, &val); 422 if (ret) 423 return ret; 424 425 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 426 return -ERANGE; 427 428 ifmgd->uapsd_queues = val; 429 430 return buflen; 431 } 432 IEEE80211_IF_FILE_RW(uapsd_queues); 433 ieee80211_if_fmt_uapsd_max_sp_len(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)434 static ssize_t ieee80211_if_fmt_uapsd_max_sp_len( 435 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 436 { 437 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 438 439 return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len); 440 } 441 ieee80211_if_parse_uapsd_max_sp_len(struct ieee80211_sub_if_data * sdata,const char * buf,int buflen)442 static ssize_t ieee80211_if_parse_uapsd_max_sp_len( 443 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 444 { 445 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 446 unsigned long val; 447 int ret; 448 449 ret = kstrtoul(buf, 0, &val); 450 if (ret) 451 return -EINVAL; 452 453 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 454 return -ERANGE; 455 456 ifmgd->uapsd_max_sp_len = val; 457 458 return buflen; 459 } 460 IEEE80211_IF_FILE_RW(uapsd_max_sp_len); 461 ieee80211_if_fmt_tdls_wider_bw(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)462 static ssize_t ieee80211_if_fmt_tdls_wider_bw( 463 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 464 { 465 const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 466 bool tdls_wider_bw; 467 468 tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) && 469 !ifmgd->tdls_wider_bw_prohibited; 470 471 return snprintf(buf, buflen, "%d\n", tdls_wider_bw); 472 } 473 ieee80211_if_parse_tdls_wider_bw(struct ieee80211_sub_if_data * sdata,const char * buf,int buflen)474 static ssize_t ieee80211_if_parse_tdls_wider_bw( 475 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 476 { 477 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 478 u8 val; 479 int ret; 480 481 ret = kstrtou8(buf, 0, &val); 482 if (ret) 483 return ret; 484 485 ifmgd->tdls_wider_bw_prohibited = !val; 486 return buflen; 487 } 488 IEEE80211_IF_FILE_RW(tdls_wider_bw); 489 490 /* AP attributes */ 491 IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC); 492 IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC); 493 IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC); 494 IEEE80211_IF_FILE(num_mcast_sta_vlan, u.vlan.num_mcast_sta, ATOMIC); 495 ieee80211_if_fmt_num_buffered_multicast(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)496 static ssize_t ieee80211_if_fmt_num_buffered_multicast( 497 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 498 { 499 return scnprintf(buf, buflen, "%u\n", 500 skb_queue_len(&sdata->u.ap.ps.bc_buf)); 501 } 502 IEEE80211_IF_FILE_R(num_buffered_multicast); 503 ieee80211_if_fmt_aqm(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)504 static ssize_t ieee80211_if_fmt_aqm( 505 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 506 { 507 struct ieee80211_local *local = sdata->local; 508 struct txq_info *txqi; 509 int len; 510 511 if (!sdata->vif.txq) 512 return 0; 513 514 txqi = to_txq_info(sdata->vif.txq); 515 516 spin_lock_bh(&local->fq.lock); 517 rcu_read_lock(); 518 519 len = scnprintf(buf, 520 buflen, 521 "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n" 522 "%u %u %u %u %u %u %u %u %u %u\n", 523 txqi->txq.ac, 524 txqi->tin.backlog_bytes, 525 txqi->tin.backlog_packets, 526 txqi->tin.flows, 527 txqi->cstats.drop_count, 528 txqi->cstats.ecn_mark, 529 txqi->tin.overlimit, 530 txqi->tin.collisions, 531 txqi->tin.tx_bytes, 532 txqi->tin.tx_packets); 533 534 rcu_read_unlock(); 535 spin_unlock_bh(&local->fq.lock); 536 537 return len; 538 } 539 IEEE80211_IF_FILE_R(aqm); 540 541 IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX); 542 543 /* IBSS attributes */ ieee80211_if_fmt_tsf(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)544 static ssize_t ieee80211_if_fmt_tsf( 545 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) 546 { 547 struct ieee80211_local *local = sdata->local; 548 u64 tsf; 549 550 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata); 551 552 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf); 553 } 554 ieee80211_if_parse_tsf(struct ieee80211_sub_if_data * sdata,const char * buf,int buflen)555 static ssize_t ieee80211_if_parse_tsf( 556 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) 557 { 558 struct ieee80211_local *local = sdata->local; 559 unsigned long long tsf; 560 int ret; 561 int tsf_is_delta = 0; 562 563 if (strncmp(buf, "reset", 5) == 0) { 564 if (local->ops->reset_tsf) { 565 drv_reset_tsf(local, sdata); 566 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n"); 567 } 568 } else { 569 if (buflen > 10 && buf[1] == '=') { 570 if (buf[0] == '+') 571 tsf_is_delta = 1; 572 else if (buf[0] == '-') 573 tsf_is_delta = -1; 574 else 575 return -EINVAL; 576 buf += 2; 577 } 578 ret = kstrtoull(buf, 10, &tsf); 579 if (ret < 0) 580 return ret; 581 if (tsf_is_delta && local->ops->offset_tsf) { 582 drv_offset_tsf(local, sdata, tsf_is_delta * tsf); 583 wiphy_info(local->hw.wiphy, 584 "debugfs offset TSF by %018lld\n", 585 tsf_is_delta * tsf); 586 } else if (local->ops->set_tsf) { 587 if (tsf_is_delta) 588 tsf = drv_get_tsf(local, sdata) + 589 tsf_is_delta * tsf; 590 drv_set_tsf(local, sdata, tsf); 591 wiphy_info(local->hw.wiphy, 592 "debugfs set TSF to %#018llx\n", tsf); 593 } 594 } 595 596 ieee80211_recalc_dtim(local, sdata); 597 return buflen; 598 } 599 IEEE80211_IF_FILE_RW(tsf); 600 ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)601 static ssize_t ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data *sdata, 602 char *buf, int buflen) 603 { 604 return snprintf(buf, buflen, "0x%x\n", sdata->vif.valid_links); 605 } 606 IEEE80211_IF_FILE_R(valid_links); 607 ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data * sdata,char * buf,int buflen)608 static ssize_t ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data *sdata, 609 char *buf, int buflen) 610 { 611 return snprintf(buf, buflen, "0x%x\n", sdata->vif.active_links); 612 } 613 ieee80211_if_parse_active_links(struct ieee80211_sub_if_data * sdata,const char * buf,int buflen)614 static ssize_t ieee80211_if_parse_active_links(struct ieee80211_sub_if_data *sdata, 615 const char *buf, int buflen) 616 { 617 u16 active_links; 618 619 if (kstrtou16(buf, 0, &active_links) || !active_links) 620 return -EINVAL; 621 622 return ieee80211_set_active_links(&sdata->vif, active_links) ?: buflen; 623 } 624 IEEE80211_IF_FILE_RW(active_links); 625 626 IEEE80211_IF_LINK_FILE(addr, conf->addr, MAC); 627 628 #ifdef CONFIG_MAC80211_MESH 629 IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC); 630 631 /* Mesh stats attributes */ 632 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); 633 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); 634 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); 635 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); 636 IEEE80211_IF_FILE(dropped_frames_no_route, 637 u.mesh.mshstats.dropped_frames_no_route, DEC); 638 639 /* Mesh parameters */ 640 IEEE80211_IF_FILE(dot11MeshMaxRetries, 641 u.mesh.mshcfg.dot11MeshMaxRetries, DEC); 642 IEEE80211_IF_FILE(dot11MeshRetryTimeout, 643 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); 644 IEEE80211_IF_FILE(dot11MeshConfirmTimeout, 645 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); 646 IEEE80211_IF_FILE(dot11MeshHoldingTimeout, 647 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); 648 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); 649 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC); 650 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); 651 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, 652 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); 653 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, 654 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); 655 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, 656 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); 657 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval, 658 u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC); 659 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, 660 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); 661 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, 662 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); 663 IEEE80211_IF_FILE(path_refresh_time, 664 u.mesh.mshcfg.path_refresh_time, DEC); 665 IEEE80211_IF_FILE(min_discovery_timeout, 666 u.mesh.mshcfg.min_discovery_timeout, DEC); 667 IEEE80211_IF_FILE(dot11MeshHWMPRootMode, 668 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); 669 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, 670 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); 671 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, 672 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); 673 IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); 674 IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC); 675 IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC); 676 IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout, 677 u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC); 678 IEEE80211_IF_FILE(dot11MeshHWMProotInterval, 679 u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC); 680 IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval, 681 u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC); 682 IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC); 683 IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration, 684 u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC); 685 IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate, 686 u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC); 687 IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC); 688 IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer, 689 u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC); 690 #endif 691 692 #define DEBUGFS_ADD_MODE(name, mode) \ 693 debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \ 694 sdata, &name##_ops) 695 696 #define DEBUGFS_ADD_X(_bits, _name, _mode) \ 697 debugfs_create_x##_bits(#_name, _mode, sdata->vif.debugfs_dir, \ 698 &sdata->vif._name) 699 700 #define DEBUGFS_ADD_X8(_name, _mode) \ 701 DEBUGFS_ADD_X(8, _name, _mode) 702 703 #define DEBUGFS_ADD_X16(_name, _mode) \ 704 DEBUGFS_ADD_X(16, _name, _mode) 705 706 #define DEBUGFS_ADD_X32(_name, _mode) \ 707 DEBUGFS_ADD_X(32, _name, _mode) 708 709 #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400) 710 add_common_files(struct ieee80211_sub_if_data * sdata)711 static void add_common_files(struct ieee80211_sub_if_data *sdata) 712 { 713 DEBUGFS_ADD(rc_rateidx_mask_2ghz); 714 DEBUGFS_ADD(rc_rateidx_mask_5ghz); 715 DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); 716 DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); 717 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz); 718 DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz); 719 DEBUGFS_ADD(hw_queues); 720 721 if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 722 sdata->vif.type != NL80211_IFTYPE_NAN) 723 DEBUGFS_ADD(aqm); 724 } 725 add_sta_files(struct ieee80211_sub_if_data * sdata)726 static void add_sta_files(struct ieee80211_sub_if_data *sdata) 727 { 728 DEBUGFS_ADD(bssid); 729 DEBUGFS_ADD(aid); 730 DEBUGFS_ADD(beacon_timeout); 731 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 732 DEBUGFS_ADD_MODE(beacon_loss, 0200); 733 DEBUGFS_ADD_MODE(uapsd_queues, 0600); 734 DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600); 735 DEBUGFS_ADD_MODE(tdls_wider_bw, 0600); 736 DEBUGFS_ADD_MODE(valid_links, 0400); 737 DEBUGFS_ADD_MODE(active_links, 0600); 738 DEBUGFS_ADD_X16(dormant_links, 0400); 739 } 740 add_ap_files(struct ieee80211_sub_if_data * sdata)741 static void add_ap_files(struct ieee80211_sub_if_data *sdata) 742 { 743 DEBUGFS_ADD(num_mcast_sta); 744 DEBUGFS_ADD(num_sta_ps); 745 DEBUGFS_ADD(dtim_count); 746 DEBUGFS_ADD(num_buffered_multicast); 747 DEBUGFS_ADD_MODE(tkip_mic_test, 0200); 748 DEBUGFS_ADD_MODE(multicast_to_unicast, 0600); 749 } 750 add_vlan_files(struct ieee80211_sub_if_data * sdata)751 static void add_vlan_files(struct ieee80211_sub_if_data *sdata) 752 { 753 /* add num_mcast_sta_vlan using name num_mcast_sta */ 754 debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir, 755 sdata, &num_mcast_sta_vlan_ops); 756 } 757 add_ibss_files(struct ieee80211_sub_if_data * sdata)758 static void add_ibss_files(struct ieee80211_sub_if_data *sdata) 759 { 760 DEBUGFS_ADD_MODE(tsf, 0600); 761 } 762 763 #ifdef CONFIG_MAC80211_MESH 764 add_mesh_files(struct ieee80211_sub_if_data * sdata)765 static void add_mesh_files(struct ieee80211_sub_if_data *sdata) 766 { 767 DEBUGFS_ADD_MODE(tsf, 0600); 768 DEBUGFS_ADD_MODE(estab_plinks, 0400); 769 } 770 add_mesh_stats(struct ieee80211_sub_if_data * sdata)771 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) 772 { 773 struct dentry *dir = debugfs_create_dir("mesh_stats", 774 sdata->vif.debugfs_dir); 775 #define MESHSTATS_ADD(name)\ 776 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops) 777 778 MESHSTATS_ADD(fwded_mcast); 779 MESHSTATS_ADD(fwded_unicast); 780 MESHSTATS_ADD(fwded_frames); 781 MESHSTATS_ADD(dropped_frames_ttl); 782 MESHSTATS_ADD(dropped_frames_no_route); 783 #undef MESHSTATS_ADD 784 } 785 add_mesh_config(struct ieee80211_sub_if_data * sdata)786 static void add_mesh_config(struct ieee80211_sub_if_data *sdata) 787 { 788 struct dentry *dir = debugfs_create_dir("mesh_config", 789 sdata->vif.debugfs_dir); 790 791 #define MESHPARAMS_ADD(name) \ 792 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops) 793 794 MESHPARAMS_ADD(dot11MeshMaxRetries); 795 MESHPARAMS_ADD(dot11MeshRetryTimeout); 796 MESHPARAMS_ADD(dot11MeshConfirmTimeout); 797 MESHPARAMS_ADD(dot11MeshHoldingTimeout); 798 MESHPARAMS_ADD(dot11MeshTTL); 799 MESHPARAMS_ADD(element_ttl); 800 MESHPARAMS_ADD(auto_open_plinks); 801 MESHPARAMS_ADD(dot11MeshMaxPeerLinks); 802 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); 803 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); 804 MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval); 805 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); 806 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); 807 MESHPARAMS_ADD(path_refresh_time); 808 MESHPARAMS_ADD(min_discovery_timeout); 809 MESHPARAMS_ADD(dot11MeshHWMPRootMode); 810 MESHPARAMS_ADD(dot11MeshHWMPRannInterval); 811 MESHPARAMS_ADD(dot11MeshForwarding); 812 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol); 813 MESHPARAMS_ADD(rssi_threshold); 814 MESHPARAMS_ADD(ht_opmode); 815 MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout); 816 MESHPARAMS_ADD(dot11MeshHWMProotInterval); 817 MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval); 818 MESHPARAMS_ADD(power_mode); 819 MESHPARAMS_ADD(dot11MeshAwakeWindowDuration); 820 MESHPARAMS_ADD(dot11MeshConnectedToMeshGate); 821 MESHPARAMS_ADD(dot11MeshNolearn); 822 MESHPARAMS_ADD(dot11MeshConnectedToAuthServer); 823 #undef MESHPARAMS_ADD 824 } 825 #endif 826 add_files(struct ieee80211_sub_if_data * sdata)827 static void add_files(struct ieee80211_sub_if_data *sdata) 828 { 829 if (!sdata->vif.debugfs_dir) 830 return; 831 832 DEBUGFS_ADD(flags); 833 DEBUGFS_ADD(state); 834 835 if (sdata->vif.type != NL80211_IFTYPE_MONITOR) 836 add_common_files(sdata); 837 838 switch (sdata->vif.type) { 839 case NL80211_IFTYPE_MESH_POINT: 840 #ifdef CONFIG_MAC80211_MESH 841 add_mesh_files(sdata); 842 add_mesh_stats(sdata); 843 add_mesh_config(sdata); 844 #endif 845 break; 846 case NL80211_IFTYPE_STATION: 847 add_sta_files(sdata); 848 break; 849 case NL80211_IFTYPE_ADHOC: 850 add_ibss_files(sdata); 851 break; 852 case NL80211_IFTYPE_AP: 853 add_ap_files(sdata); 854 break; 855 case NL80211_IFTYPE_AP_VLAN: 856 add_vlan_files(sdata); 857 break; 858 default: 859 break; 860 } 861 } 862 863 #undef DEBUGFS_ADD_MODE 864 #undef DEBUGFS_ADD 865 866 #define DEBUGFS_ADD_MODE(dentry, name, mode) \ 867 debugfs_create_file(#name, mode, dentry, \ 868 link, &link_##name##_ops) 869 870 #define DEBUGFS_ADD(dentry, name) DEBUGFS_ADD_MODE(dentry, name, 0400) 871 add_link_files(struct ieee80211_link_data * link,struct dentry * dentry)872 static void add_link_files(struct ieee80211_link_data *link, 873 struct dentry *dentry) 874 { 875 DEBUGFS_ADD(dentry, txpower); 876 DEBUGFS_ADD(dentry, user_power_level); 877 DEBUGFS_ADD(dentry, ap_power_level); 878 879 switch (link->sdata->vif.type) { 880 case NL80211_IFTYPE_STATION: 881 DEBUGFS_ADD_MODE(dentry, smps, 0600); 882 break; 883 default: 884 break; 885 } 886 } 887 ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data * sdata)888 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata) 889 { 890 char buf[10+IFNAMSIZ]; 891 892 sprintf(buf, "netdev:%s", sdata->name); 893 sdata->vif.debugfs_dir = debugfs_create_dir(buf, 894 sdata->local->hw.wiphy->debugfsdir); 895 sdata->debugfs.subdir_stations = debugfs_create_dir("stations", 896 sdata->vif.debugfs_dir); 897 add_files(sdata); 898 899 if (!(sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 900 add_link_files(&sdata->deflink, sdata->vif.debugfs_dir); 901 } 902 ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data * sdata)903 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) 904 { 905 if (!sdata->vif.debugfs_dir) 906 return; 907 908 debugfs_remove_recursive(sdata->vif.debugfs_dir); 909 sdata->vif.debugfs_dir = NULL; 910 sdata->debugfs.subdir_stations = NULL; 911 } 912 ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data * sdata)913 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) 914 { 915 struct dentry *dir; 916 char buf[10 + IFNAMSIZ]; 917 918 dir = sdata->vif.debugfs_dir; 919 920 if (IS_ERR_OR_NULL(dir)) 921 return; 922 923 sprintf(buf, "netdev:%s", sdata->name); 924 debugfs_rename(dir->d_parent, dir, dir->d_parent, buf); 925 } 926 ieee80211_link_debugfs_add(struct ieee80211_link_data * link)927 void ieee80211_link_debugfs_add(struct ieee80211_link_data *link) 928 { 929 char link_dir_name[10]; 930 931 if (WARN_ON(!link->sdata->vif.debugfs_dir)) 932 return; 933 934 /* For now, this should not be called for non-MLO capable drivers */ 935 if (WARN_ON(!(link->sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))) 936 return; 937 938 snprintf(link_dir_name, sizeof(link_dir_name), 939 "link-%d", link->link_id); 940 941 link->debugfs_dir = 942 debugfs_create_dir(link_dir_name, 943 link->sdata->vif.debugfs_dir); 944 945 DEBUGFS_ADD(link->debugfs_dir, addr); 946 add_link_files(link, link->debugfs_dir); 947 } 948 ieee80211_link_debugfs_remove(struct ieee80211_link_data * link)949 void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link) 950 { 951 if (!link->sdata->vif.debugfs_dir || !link->debugfs_dir) { 952 link->debugfs_dir = NULL; 953 return; 954 } 955 956 if (link->debugfs_dir == link->sdata->vif.debugfs_dir) { 957 WARN_ON(link != &link->sdata->deflink); 958 link->debugfs_dir = NULL; 959 return; 960 } 961 962 debugfs_remove_recursive(link->debugfs_dir); 963 link->debugfs_dir = NULL; 964 } 965 ieee80211_link_debugfs_drv_add(struct ieee80211_link_data * link)966 void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link) 967 { 968 if (WARN_ON(!link->debugfs_dir)) 969 return; 970 971 drv_link_add_debugfs(link->sdata->local, link->sdata, 972 link->conf, link->debugfs_dir); 973 } 974 ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data * link)975 void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link) 976 { 977 if (!link || !link->debugfs_dir) 978 return; 979 980 if (WARN_ON(link->debugfs_dir == link->sdata->vif.debugfs_dir)) 981 return; 982 983 /* Recreate the directory excluding the driver data */ 984 debugfs_remove_recursive(link->debugfs_dir); 985 link->debugfs_dir = NULL; 986 987 ieee80211_link_debugfs_add(link); 988 } 989